Patent Publication Number: US-2023159195-A1

Title: Film wrapping equipment

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application claims priority to a Chinese patent application with an application date of Nov. 23, 2021, an application number of “202111390759.1”, and an application title of “FILM WRAPPING EQUIPMENT”, which is incorporated by reference in the present application in its entirety. 
     BACKGROUND OF DISCLOSURE 
     Technical Field 
     The present application relates to a technical field of battery manufacturing, and more particularly, to a film wrapping equipment. 
     Description of Prior Art 
     In an industrial production process, it is often necessary to wrap products, that is, to wrap products with film materials. For example, in a lithium battery production line, for a battery cell after ultrasonic welding, two sides and a bottom surface of the battery cell need to be completely wrapped with adhesives. When adhering the adhesives, it is necessary to ensure that an adhering surface is flat without bubbles and clamping of the battery cell during an adhering process is reliable without looseness. In prior art, horizontal adhering is generally adopted, that is, the battery cell is placed horizontally in a fixture, and adhering of the battery cell is completed through a series of translation, reversing, and other actions, resulting in wrinkles forming easily and low adhesives wrapping accuracy. 
     BRIEF SUMMARY OF DISCLOSURE 
     Based on this, it is necessary to provide a film wrapping equipment to improve the above-mentioned defects in view of problems that film wrapping wrinkles easily and film wrapping accuracy is low in the current technology. 
     A film wrapping equipment, which comprises: 
     a film wrapping assembly comprising two film wrapping rollers arranged opposite to each other in a first direction, and a film wrapping channel for a product to pass through being formed between the two film wrapping rollers; 
     a film pulling assembly arranged on one side of the film wrapping assembly in the first direction and used to grab a material strip located on one side of the film wrapping assembly away from the film pulling assembly and pull the material strip along the first direction to move to one side of the film wrapping assembly facing the film pulling assembly; 
     a product loading assembly used to grab the product and drive the product to pass through the film wrapping channel; and 
     a strip cutting assembly used to cut off material strips located on two sides of the two film wrapping rollers in the first direction. 
     In an embodiment of the present application, the film pulling assembly comprises a strip pulling moving seat and two strip clamping mechanisms both used to clamp the material strips; the strip pulling moving seat is controllably movable along the first direction, the two strip clamping mechanisms are arranged on the strip pulling moving seat at intervals along a second direction perpendicular to the first direction, and the two strip clamping mechanisms are able to be close to each other or move away from each other along the second direction. 
     In an embodiment of the present application, the film pulling assembly further comprises a strip pulling lifting seat arranged on the strip pulling moving seat; the strip pulling lifting seat is movable relative to the strip pulling moving seat along a third direction, and the two strip clamping mechanisms are arranged on the strip pulling lifting seat; 
     wherein the third direction is perpendicular to the first direction and the second direction. 
     In an embodiment of the present application, the two film wrapping rollers are configured close to each other or moving away from each other along the first direction. 
     In an embodiment of the present application, the film wrapping assembly further comprises a film wrapping driving member and a film wrapping transmission mechanism connected to the film wrapping driving member by transmission; and the film wrapping transmission mechanism is connected between the two film wrapping rollers by transmission, so that the two film wrapping rollers are driven by the film wrapping driving member to be close to each other or move away from each other along the first direction. 
     In an embodiment of the present application, the film wrapping transmission mechanism comprises a film wrapping fixed seat, a cam slot plate, two cam followers, and two film wrapping mounting seats; the film wrapping driving member is mounted on the film wrapping fixed seat, and the cam slot plate is mounted on an output shaft of the film wrapping driving member, so as to be driven by the film wrapping driving member to rotate; and 
     the two film wrapping mounting seats are arranged close to each other or moving away from each other along the first direction, and the two film wrapping rollers are rotatably connected to the two film wrapping mounting seats around their own axes, respectively; and the two cam followers are mounted on the two film wrapping mounting seats, respectively and are cooperated with a cam slot on the cam slot plate by transmission, so as to drive the two film wrapping mounting seats to be close to each other or move away from each other along the first direction during a rotating process of the cam slot plate. 
     In an embodiment of the present application, the product loading assembly comprises a first product clamping mechanism and a second product clamping mechanism arranged opposite to each other in a third direction; and the film wrapping assembly is located between the first product clamping mechanism and the second product clamping mechanism, and the third direction is perpendicular to the first direction; and 
     the first product clamping mechanism is used to clamp the product and insert the product into the film wrapping channel along the third direction; and the second product clamping mechanism is used to clamp the product passing through the film wrapping channel and pull the product out to a feeding position along the third direction. 
     In an embodiment of the present application, the first product clamping mechanism comprises a first lifting driving member, a first lifting seat, and a first clamping structure; the first lifting driving member is drivingly connected to the first lifting seat, so as to drive the first lifting seat to move along the third direction; and the first clamping structure is mounted on the first lifting seat and is used to clamp the product; and 
     the second product clamping mechanism comprises a second lifting driving member, a second lifting seat, and a second clamping structure; the second lifting driving member is drivingly connected to the second lifting seat, so as to drive the second lifting seat to move along the third direction; and the second clamping structure is mounted on the second lifting seat and is used to clamp the product. 
     In an embodiment of the present application, the film wrapping equipment further comprises a product removal assembly, and the product removal assembly comprises a clamping sub-structure and a removal driving structure; the removal driving structure is drivingly connected to the clamping sub-structure, so as to drive the clamping sub-structure to move between the feeding position and a removal position, and the clamping sub-structure is used to clamp the product at the feeding position. 
     In an embodiment of the present application, the film wrapping equipment further comprises a waste material disposal assembly, and the waste material disposal assembly comprises a waste material suction mechanism and a motion driving mechanism; and the motion driving mechanism is drivingly connected to the waste material suction mechanism, so as to drive the waste material suction mechanism to move between a material suction position and a waste material collection position; and 
     when the waste material suction mechanism moves to the material suction position, the waste material suction mechanism is located between the film wrapping assembly and the film pulling assembly, so as to suck a waste material formed after the strip cutting assembly cuts off the material strip; when the waste material suction mechanism moves to the waste material collection position, the waste material suction mechanism releases the waste material. 
     In an embodiment of the present application, the strip cutting assembly comprises a strip cutting moving seat, a strip cutting driving member, and a cutter mechanism; the strip cutting moving seat is movably arranged along a second direction perpendicular to the first direction; the strip cutting driving member is drivingly connected to the strip cutting moving seat; and the cutter mechanism is mounted on the strip cutting moving seat, so as to cut the material strip in a moving process along the second direction with the strip cutting moving seat. 
     In an embodiment of the present application, the cutter mechanism comprises a cutter fixed seat, a cutter quick removal seat, and a cutter; the cutter fixed seat is mounted on the strip cutting moving seat; the cutter quick removal seat is detachably connected to the cutter fixed seat; and the cutter is detachably connected to the cutter quick removal seat. 
     The above-mentioned film wrapping equipment, during actual film wrapping operation, firstly, the film pulling assembly moves along the first direction until a starting end of a material strip located upstream of the film wrapping assembly is clamped, and then returns along the first direction until the material strip is pulled over the film wrapping assembly to a downstream side of the film wrapping assembly. At this time, the material strip covers the film wrapping channel between the two film wrapping rollers. The product loading assembly clamps the product and drives the product to be inserted from an end of the film wrapping channel covered by the material strip. In a process of the product gradually passing through the film wrapping channel, the material strip is gradually adhered to a bottom surface and two opposite surfaces of the product under a rolling action of the two film wrapping rollers. When film wrapping is about to be completed, the strip cutting assembly cuts off the material strip located on the two sides of the above-mentioned two film wrapping rollers in the first direction, and then the product continues to pass through the film wrapping channel until it completely passes through the film wrapping channel, that is, the film wrapping is completed. 
     This way, the film wrapping equipment of the present application adopts a method of inserting the product between the two film wrapping rollers (i.e., vertical film wrapping method), during a film wrapping process, the two film wrapping rollers can continuously roll the material strip onto the product, and when the film wrapping of the product is about to be completed, the material strip is cut off by using the strip cutting assembly. During the film wrapping process, clamping is reliable without looseness, a film surface is flat without bubbles, wrinkles are prevented, and film wrapping accuracy is high. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a front view of a film wrapping equipment in an embodiment of the present application. 
         FIG.  2    is a right view of the film wrapping equipment shown in  FIG.  1   . 
         FIG.  3    is a top view of the film wrapping equipment shown in  FIG.  1   . 
         FIG.  4    is a top view of a film wrapping assembly of the film wrapping equipment shown in  FIG.  1   . 
         FIG.  5    is a front view of the film wrapping assembly shown in  FIG.  4   . 
         FIG.  6    is a left view of a film wrapping transmission mechanism of the film wrapping assembly shown in  FIG.  5   . 
         FIG.  7    is a top view of a film pulling assembly of the film wrapping equipment shown in  FIG.  1   . 
         FIG.  8    is a front view of the film pulling assembly shown in  FIG.  7   . 
         FIG.  9    is a left view of the film pulling assembly shown in  FIG.  7   . 
         FIG.  10    is a front view of a second product clamping mechanism of a product loading assembly shown in  FIG.  1   . 
         FIG.  11    is a left view of the second product clamping mechanism shown in  FIG.  10   . 
         FIG.  12    is a front view of a product removal assembly of the film wrapping equipment shown in  FIG.  1   . 
         FIG.  13    is a left view of the product removal assembly shown in  FIG.  12   . 
         FIG.  14    is a top view of the product removal assembly shown in  FIG.  12   . 
         FIG.  15    is a front view of a strip cutting assembly of the film wrapping equipment shown in  FIG.  1   . 
         FIG.  16    is a top view of the strip cutting assembly shown in  FIG.  15   . 
         FIG.  17    is a left view of the strip cutting assembly shown in  FIG.  15   . 
         FIG.  18    is a front view of a cutter mechanism of the strip cutting assembly shown in  FIG.  15   . 
         FIG.  19    is a left view of the cutter mechanism shown in  FIG.  18   . 
         FIG.  20    is a schematic structural diagram of a cutter and a cutter quick removal seat of the cutter mechanism shown in  FIG.  18   . 
         FIG.  21    is a front view of a waste material suction mechanism of a waste material disposal assembly of the film wrapping equipment shown in  FIG.  1   . 
         FIG.  22    is a left view of the waste material suction mechanism shown in  FIG.  21   . 
         FIG.  23    is a top view of the waste material suction mechanism shown in  FIG.  21   . 
         FIG.  24    is a schematic structural diagram of a material pressing mechanism, a waste material channel, and a waste material collection box of the waste material disposal assembly of the film wrapping equipment shown in  FIG.  1     
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     In order to make the above objects, features, and advantages of the present application more obvious and understood, specific embodiments of the present application will be described in detail below with reference to accompanying drawings. In a following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating a connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below. 
     Terms “first” and “second” are only used for descriptive purposes and should not be understood as indicating or implying relative importance or implying a number of indicated technical features. Therefore, a feature delimited with “first”, “second” may expressly or implicitly include at least one of those features. In the description of the present application, “a plurality of” means at least two, such as two, three, etc., unless expressly and specifically defined otherwise. 
     In the present application, unless expressly specified and limited otherwise, terms “installed”, “communicated”, “connected”, “fixed” and other terms should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined. For those of ordinary skill in the art, specific meanings of the above terms in the present application can be understood according to specific situations. 
     In the present application, unless expressly stated and defined otherwise, a first feature “on” or “under” a second feature may be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly contacted through an intermediary. In addition, the first feature being “above”, “over” and “on” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that a horizontal height of the first feature is greater than a horizontal height of the second feature. The first feature being “below”, “under” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than the horizontal height of the second feature. 
     It should be noted that, when an element is referred to as being “fixed to” or “arranged on” another element, it can be directly on another element, or an intervening element may also be present. When an element is referred to as being “connected” to another element, it can be directly connected to another element or intervening elements may also be present. Terms “vertical”, “horizontal”, “upper”, “lower”, “left”, “right” and similar expressions used here are only for a purpose of illustration and do not represent an only embodiment. 
     Please refer to  FIGS.  1  to  3   , a film wrapping equipment is provided in an embodiment of the present application, including a film wrapping assembly  10 , a film pulling assembly  20 , a product loading assembly  30 , and a strip cutting assembly  40  (see  FIG.  15   ). 
     Please refer to  FIG.  4    and  FIG.  5   , the film wrapping assembly  10  includes two film wrapping rollers  11  arranged opposite to each other in a first direction, and a film wrapping channel  110  for a product to pass through is formed between the two film wrapping rollers  11 . 
     Please continue to refer to  FIGS.  1  to  3   , the film pulling assembly  20  is arranged on one side of the film wrapping assembly  10  in the first direction and is used to grab a material strip located on one side of the film wrapping assembly  10  away from the film pulling assembly  20  and pull the material strip along the first direction to move to one side of the film wrapping assembly  10  facing the film pulling assembly  20 . That is to say, the film pulling assembly  20  pulls the material strip from one side of the film wrapping assembly  10  to another side of the film wrapping assembly  10  along the first direction, so that the material strip passes through the film wrapping assembly  10 . 
     The product loading assembly  30  is used to grab the product and drive the product to pass through the above-mentioned film wrapping channel  110 . Under an action of the film pulling assembly  20 , the material strip passes through the film wrapping assembly  10 , so that when the product loading assembly  30  drives the product to pass through the film wrapping channel  110 , the material strip is wrapped on a bottom surface and two opposite surfaces of the product under a rolling action of the film wrapping rollers  11 , that is, film wrapping of the product is realized. The strip cutting assembly  40  is used to cut off material strips located on two sides of the above-mentioned two film wrapping rollers  11  in the first direction, making the material strip wrapped on the product and the material strips located upstream and downstream of the film wrapping assembly  10  to be cut off. It can be understood that the product can be a battery cell and the material strip can be adhesives. Of course, the product can also be other products that need to be film wrapped, and the material strips can also be other types of membrane materials, which are not limited here. 
     The above-mentioned film wrapping equipment, during actual wrapping operation, firstly, the film pulling assembly  20  moves along the first direction until a starting end of the material strip located upstream of the film wrapping assembly  10  is clamped, and then returns along the first direction until the material strip is pulled over the film wrapping assembly  10  to a downstream side of the film wrapping assembly  10 . At this time, the material strip covers the film wrapping channel  110  between the two film wrapping rollers  11 . The product loading assembly  30  clamps the product and drives the product to be inserted from an end of the film wrapping channel  110  covered by the material strip. In a process of the product gradually passing through the film wrapping channel  110 , the material strip is gradually adhered to the bottom surface and two opposite surfaces of the product under the rolling action of the two film wrapping rollers  11 . When the film wrapping is about to be completed, the strip cutting assembly  40  cuts off the material strip located on the two sides of the above-mentioned two film wrapping rollers  11  in the first direction, and then the product continues to pass through the film wrapping channel  110  until it completely passes through the film wrapping channel  110 , that is, the film wrapping is completed. 
     This way, the film wrapping equipment of the present application adopts a method of inserting the product between the two film wrapping rollers  11  (i.e., vertical film wrapping method), during a film wrapping process, the two film wrapping rollers  11  can continuously roll the material strip onto the product, and when the film wrapping of the product is about to be completed, the material strip is cut off by using the strip cutting assembly  40 . During the film wrapping process, clamping is reliable without looseness, a film surface is flat without bubbles, wrinkles are prevented, and film wrapping accuracy is high. 
     It should be noted that, the two film wrapping rollers  11  are parallel to each other and are perpendicular to the first direction. In order to roll the material strip onto a surface of the product, both the two film wrapping rollers  11  can rotate around their own axes. That is to say, the two film wrapping rollers  11  clamp the product tightly, and the two film wrapping rollers  11  are driven to rotate during a process of the product gradually passing through the two film wrapping rollers  11 . 
     It should also be noted that during an insertion process of the product into the film wrapping channel  110 , the product will drive the material strips on the two sides of the product to gradually enter the film wrapping channel  110  and be adhered onto the product. Therefore, the material strip located upstream will gradually be rolled towards the film wrapping channel  110 , and the film pulling assembly  20  will gradually move to the film wrapping rollers  11  along the first direction, so that the material strip located downstream of the product will also gradually move to the film wrapping channel  110 . 
     Please refer to  FIGS.  7  to  9   , in the embodiment of the present application, the film pulling assembly  20  includes a strip pulling moving seat  22  and two strip clamping mechanisms  21  both used to clamp the material strip. The strip pulling moving seat  22  is controllably movable along the first direction. The two strip clamping mechanisms  21  are arranged on the strip pulling moving seat  22  at intervals along a second direction perpendicular to the first direction, and the two strip clamping mechanisms  21  can be close to each other or move away from each other along the second direction. This way, the two strip clamping mechanisms  21  are used to clamp the material strip together, and the two strip clamping mechanisms  21  can be driven away from each other to tighten the material strip in its wide direction (i.e., the second direction), further preventing wrinkles and other irregularities when the material strip is adhered onto the product. It should also be noted that, of course, a distance between the two strip clamping mechanisms  21  can also be adjusted by driving the two strip clamping mechanisms  21  to be close to each other or move away from each other, so that it can adapt to clamping of material strips with different width and size, which is conducive to improving compatibility of the equipment. 
     In some embodiments, the film pulling assembly  20  further includes a strip pulling lifting seat  25  arranged on the strip pulling moving seat  22 . The strip pulling lifting seat  25  is movable along a third direction relative to the strip pulling moving seat  22 . The two strip clamping mechanisms  21  are arranged on the strip pulling lifting seat  25 , so as to make the two strip clamping mechanisms  21  move along the third direction together with the strip pulling lifting seat  25 . Wherein, the third direction is perpendicular to the first direction and the second direction. This way, when performing a strip pulling action, firstly, the strip pulling lifting seat  25  is driven to ascend along the third direction, so as to prevent interference with the film wrapping assembly  10  during a moving process of the two strip clamping mechanisms  21  along the first direction. When the two strip clamping mechanisms  21  pull the material strip to a preset position, the strip pulling lifting seat  25  is driven to descend along the third direction, so as to drive the material strip to cover the two film wrapping rollers  11 . 
     It should be noted that, in the embodiment shown in  FIG.  1   , the first direction is a left and right direction, the second direction is a direction perpendicular to the page, and the third direction is a vertical direction. 
     Specifically, in the embodiment, the film pulling assembly  20  further includes a strip pulling driving member  23  and a lifting driving member  26 . The strip pulling driving member  23  is drivingly connected to the strip pulling moving seat  22 , so as to drive the strip pulling moving seat  22  to move along the first direction. The lifting driving member  26  is mounted on the strip pulling moving seat  22  and is drivingly connected to the strip pulling lifting seat  25 , so as to drive the strip pulling lifting seat  25  to move along the third direction relative to the strip pulling moving seat  22 . This way, the strip pulling driving member  23  and the lifting driving member  26  are used to drive the two strip clamping mechanisms  21  respectively to move together along the first direction and the third direction. Alternatively, a cylinder can be used for the strip pulling driving member  23 , and the cylinder can also be used for the lifting driving member  26 . 
     Furthermore, the film pulling assembly  20  further includes a first sliding block  222  and a first sliding rail  221 . The first sliding block  222  is fixedly connected to the strip pulling moving seat  22 ; and the first sliding rail  221  extends longitudinally along the first direction, and the first sliding block  222  is slidably connected to the first sliding rail  221 . This way, sliding cooperation of the first sliding block  222  and the first sliding rail  221  is used to guide movement of the strip pulling moving seat  22  along the first direction. 
     It should be noted that, a guiding structure, such as a sliding block and a sliding rail structure or a guiding rod and a guiding sleeve structure, can also be set between the strip pulling moving seat  22  and the strip pulling lifting seat  25 . This guiding structure is used to guide movement of the strip pulling lifting seat  25  along the third direction relative to the strip pulling moving seat  22 , which is not limited here. 
     Specifically, in the embodiment, each strip clamping mechanism  21  includes a strip clamping mounting plate  212 , a gripper cylinder  211 , and a gripper  210 . The strip clamping mounting plate  212  is movably connected to the strip pulling lifting seat  25  along the second direction. The gripper cylinder  211  is mounted on the strip clamping mounting plate  212  and is drivingly connected to the gripper  210 . The gripper cylinder  211  can drive the gripper  210  to clamp or release the material strip. 
     Furthermore, the film pulling assembly  20  further includes two tightening driving members  24  corresponding to the two strip clamping mounting plates  212  one-to-one. Both the two tightening driving members  24  are mounted on the strip pulling lifting seat  25  and are drivingly connected to corresponding strip clamping mounting plates  212 , respectively, so as to drive the two strip clamping mounting plates  212  respectively to be close to each other or move away from each other, so as to drive the two grippers  210  to be close to each other or move away from each other, so that a distance between the two grippers  210  in the second direction can be adjusted. Alternatively, the tightening driving members  24  may adopt cylinders. 
     It should be noted that, movement of the strip clamping mounting plates  212  along the second direction can also be guided by sliding cooperation of a sliding block and a sliding rail, which is not limited here. 
     Furthermore, each gripper  210  is equipped with a detecting sensor  213  for detecting a position of the material strip, so as to clamp the material strip accurately. 
     Please refer to  FIG.  4   ,  FIG.  5   , and  FIG.  6   , in the embodiment of the present application, the two film wrapping rollers  11  are configured close to each other or moving away from each other along the first direction. This way, a distance between the two film wrapping rollers  11  can be adjusted by the two film wrapping rollers  11  close to each other or moving away from each other along the first direction to use different types of products and improve compatibility of the equipment. 
     Specifically, in the embodiment, the film wrapping assembly  10  further includes a film wrapping driving member  12 , and a film wrapping transmission mechanism  13  connected to the film wrapping driving member  12  by transmission. The film wrapping transmission mechanism  13  is connected to the two film wrapping rollers  11  by transmission, so that the two film wrapping rollers  11  are driven by the film wrapping driving member  12  to be close to each other or move away from each other along the first direction, so that the distance between the two film wrapping rollers  11  can be adjusted. 
     Specifically, in the embodiment, the film wrapping transmission mechanism  13  includes a film wrapping fixed seat  134 , a cam slot plate  132 , two cam followers  133 , and two film wrapping mounting seats  131 . The film wrapping driving member  12  is mounted on the film wrapping fixed seat  134 . The cam slot plate  132  is mounted on an output shaft of the film wrapping driving member  12 , so as to be driven by the film wrapping driving member  12  to rotate. The two film wrapping mounting seats  131  are arranged close to each other or moving away from each other along the first direction, and the two film wrapping rollers  11  are rotatably connected to the two film wrapping mounting seats  131  around their own axes, respectively, so that the two film wrapping rollers  11  are driven to be close to each other or move away from each other along the first direction when the two film wrapping mounting seats  131  are close to each other or move away from each other along the first direction. The two cam followers  133  are mounted on the two film wrapping mounting seats  131 , respectively, and are cooperated with a cam slot  136  by transmission, so as to drive the two film wrapping mounting seats  131  to be close to each other or move away from each other along the first direction during a rotating process of the cam slot plate  132 , so that the two film wrapping rollers  11  are driven to be close to each other or move away from each other. Alternatively, the film wrapping driving member  12  may adopt a motor. 
     Furthermore, each film wrapping mounting seat  131  is equipped with a second sliding block  1311 . The second sliding block  1311  is slidably connected to a second sliding rail  1312 , and the second sliding rail  1312  extends longitudinally along the first direction. This way, sliding cooperation of the second sliding block  1311  and the second sliding rail  1312  is used to guide movement of the film wrapping mounting seat  131  along the first direction. 
     It should be noted that, there are two sets of the film wrapping driving members  12  and the film wrapping transmission mechanisms  13 , and the two sets of the film wrapping driving members  12  and the film wrapping transmission mechanisms  13  are arranged on two ends of the film wrapping rollers  11 , respectively (that is, two ends of the film wrapping rollers  11  along the second direction), so as jointly drive the two film wrapping rollers  11  to be close to each other or move away from each other. 
     Please refer to  FIG.  1   ,  FIG.  10   , and  FIG.  11   , in the embodiment of the present application, the product loading assembly  30  includes a first product clamping mechanism and a second product clamping mechanism  32  arranged opposite to each other in the third direction, and the film wrapping assembly  10  is located between the first product clamping mechanism and the second product clamping mechanism  32 . The first product clamping mechanism is used to clamp the product and to insert the product into the film wrapping channel  110  along the third direction. The second product clamping mechanism  32  is used to clamp product passing through the film wrapping channel  110  and pull the product out along the third direction to a feeding position. 
     This way, when performing film wrapping, the first product clamping mechanism clamps one end of a product to be film wrapped, another end of the product is inserted into the film wrapping channel  110  between the two film wrapping rollers  11  along the third direction. The second product clamping mechanism  32  clamps an end of the product passing through the film wrapping channel  110 . At this time, two ends of the product in the third direction are clamped by the first product clamping mechanism and the second product clamping mechanism  32 , respectively. Then, the first product clamping mechanism and the second product clamping mechanism  32  jointly drive the product to continue to pass through the film wrapping channel  110 . Until the first product clamping mechanism contacts or is about to contact the film wrapping rollers  11 , the product is discontinued to be inserted. The first product clamping mechanism releases the product and resets, and the strip cutting assembly  40  cuts off the material strip. Then, the second product clamping mechanism  32  continues to drive the product to pass through the film wrapping channel  110 , so as to continue to roll and adhere a tail end of the material strip onto the product, that is, the film wrapping is completed. 
     Specifically, in the embodiment, the first product clamping mechanism includes a first lifting driving member, a first lifting seat, and a first clamping structure. The first lifting driving member is drivingly connected to the first lifting seat, so as to drive the first lifting seat to move along the third direction. The first clamping structure used to clamp the product is mounted on the first lifting seat, so that the first clamping structure can move along the third direction together with the first lifting seat. This way, when the product needs to be clamped, the first lifting driving member drives the first lifting seat to move along the third direction, until the first clamping structure is driven to move to a loading position, so that the first clamping structure clamps a product to be film wrapped on the loading position. Then, the first lifting driving member drives the first lifting seat to move to the film wrapping channel  110  along the third direction (at this time, the material strip passes through the first clamping structure and the above-mentioned film wrapping rollers  11 ), so that the product is inserted into the film wrapping channel  110  to complete the film wrapping. Alternatively, the first lifting driving member may be a transformer. 
     Furthermore, the first clamping structure includes a first air claw and two first clamping plates. The first air claw is mounted on the first lifting driving member, and the two first clamping plates are mounted on the first air claw, so that the first air claw can drive the two first clamping plates to clamp or release the product. 
     Please refer to  FIG.  10    and  FIG.  11   , specifically, in the embodiment, the second product clamping mechanism  32  includes a second lifting driving member  321 , a second lifting seat  322 , and a second clamping structure  323 . The second lifting driving member  321  is drivingly connected to the second lifting seat  322 , so as to drive the second lifting seat  322  to move along the third direction. The second clamping structure  323  used to clamp the product is mounted on the second lifting seat  322 , so that the second clamping structure  323  can move along the third direction together with the second lifting seat  322 . This way, when the product needs to be clamped, the second clamping structure  323  clamps an end of the product (the end of the product is adhered with the material strip) passing through the film wrapping channel  110 . Then, the second lifting driving member  321  drives the second lifting seat  322  to move away from the film wrapping channel  110  along the third direction, so as to drive the product to continue to pass through the film wrapping channel  110  to complete the film wrapping. Alternatively, the second lifting driving member  321  may be the transformer. 
     Furthermore, the second clamping structure  323  includes a second air claw and two second clamping plates. The second air claw is mounted on the second lifting driving member  321 , and the two second clamping plates are mounted on the second air claw, so that the second air claw can drive the two second clamping plates to clamp or release the product. Alternatively, an elastic layer is arranged on sides of the two second clamping plates facing each other to prevent damage to the product, which is conducive to adapting to film wrapping of a soft encapsulation battery cell. 
     Please refer to  FIGS.  15  to  17   , in the embodiment of the present application, the strip cutting assembly  40  includes a strip cutting moving seat  42 , a strip cutting driving member  41 , and a cutter mechanism  43 . The strip cutting moving seat  42  is movably arranged along the second direction perpendicular to the first direction. The strip cutting driving member  41  is drivingly connected to the strip cutting moving seat  42 , so as to drive the strip cutting moving seat  42  to move along the second direction. The cutter mechanism  43  is mounted on the strip cutting moving seat  42  so as to cut off the material strip during a moving process along the second direction with the strip cutting moving seat  42 . Alternatively, the strip cutting driving member  41  may adopt the cylinder. 
     Specifically, in the embodiment, the strip cutting moving seat  42  is equipped with a third sliding block  412 , and the third sliding block  412  is slidably cooperated with a third sliding rail  411 , and the third sliding rail  411  extends longitudinally along the second direction. This way, sliding cooperation of the third sliding block  412  and the third sliding rail  411  is used to guide movement of the strip cutting moving seat  42  along the second direction. 
     Please refer to  FIGS.  18  to  20   , in some embodiments, the cutter mechanism  43  includes a cutter fixed seat  431 , a cutter quick removal seat  432 , and a cutter  433 . The cutter fixed seat  431  is mounted on the strip cutting moving seat  42 , the cutter quick removal seat  432  is detachably connected to the cutter fixed seat  431 , and the cutter  433  is detachably connected to the cutter quick removal seat  432 . This way, when the cutter  433  needs to be replaced, the cutter quick removal seat  432  is removed from the cutter fixed seat  431 , then the cutter  433  is removed from the cutter quick removal seat  432  and replaced with a new cutter  433 , finally, the cutter quick removal seat  432  is remounted on the cutter fixed seat  431 . Replacement of the cutter  433  is convenient and fast. 
     Specifically, in the embodiment, the cutter quick removal seat  432  has a positioning protrusion  4321  and a magnetic suction portion  4322 . The cutter  433  has a positioning slot  4331  corresponding to the positioning protrusion  4321 . This way, the cutter  433  is attached to the cutter quick removal seat  432 , so that the positioning protrusion  4321  penetrates the positioning slot  4331 , and the magnetic suction portion  4322  is attached and fixed to the cutter  433 . Furthermore, the magnetic suction portion  4322  can be a magnet embedded on the cutter quick removal seat  432 . 
     Specifically, in the embodiment, the cutter mechanism  43  further includes a pressing screw  435  and a wedge block  434 . The cutter fixed seat  431  has an insertion groove. The cutter quick removal seat  432  inserts into the insertion groove, the wedge block  434  is used to tighten the cutter quick removal seat  432  in the insertion groove. The pressing screw  435  is threaded to the cutter fixed seat  431 , and one end of the pressing screw  435  abuts the wedge block  434  to limit the wedge block  434 . This way, when the cutter quick removal seat  432  needs to be removed, the pressing screw  435  is firstly screwed out, and the wedge block  434  is taken out to relieve tightening of the cutter quick removal seat  432 . At this time, the cutter quick removal seat  432  can be easily pulled out from the insertion groove. 
     It should be noted that, because the material strips located on the two sides of the film wrapping assembly  10  in the first direction need to be cut off, the film wrapping equipment can include two of the strip cutting assemblies  40  arranged on the two sides of the film wrapping assembly  10  in the first direction, respectively. The two of the strip cutting assemblies  40  can be used to cut off the material strips at a same time. 
     Please refer to  FIGS.  12  to  14   , in the embodiment of the present application, the film wrapping equipment further includes a product removal assembly  50 . The product removal assembly  50  includes a clamping sub-structure  53  and a removal driving structure. The clamping sub-structure  53  is a third clamping structure  53 . The removal driving structure is drivingly connected to the third clamping structure  53 , so as to drive the third clamping structure  53  to move between the feeding position and a removal position. The third clamping structure  53  is used to clamp a product film wrapped at the feeding position. This way, when the product completes the film wrapping and moves to the feeding position with the second product clamping mechanism  32 , the third clamping structure  53  clamps the product, and then the removal driving structure drives the third clamping structure  53  to move (i.e., move along the first direction) to the removal position. Alternatively, the third clamping structure  53  may adopt a clamping mechanism such as an air claw, which is not limited here. 
     Specifically, in the embodiment, the removal driving structure includes a removal movable plate  52  and a removal driving member  51 . The removal movable plate  52  is movably arranged (i.e., movably arranged along the first direction), and the removal driving member  51  is drivingly connected to the removal movable plate  52 , so as to drive the removal movable plate  52  to move. The third clamping structure  53  is mounted on the removal movable plate  52 , so that the third clamping structure  53  can move between the feeding position and the removal position with the removal movable plate  52 . Alternatively, the removal driving member  51  can adopt the transformer. 
     Furthermore, the removal movable plate  52  is equipped with a fourth sliding block  512 , and the fourth sliding block  512  is slidably connected to a fourth sliding rail  511 . This way, sliding cooperation of the fourth sliding block  512  and the fourth sliding rail  511  is used to guide movement of the removal movable plate  52 . 
     Specifically, in the embodiment, there are two of the third clamping structures  53 . When the two of the third clamping structures  53  move to the feeding position with the removal movable plate  52 , and when the second clamping structure  323  also moves to the feeding position, the second clamping structure  323  is located between the two third clamping structures  53 , and the second clamping structure  323  and the third clamping structure  53  clamp the product along a same direction together. This way, on one hand, the two third clamping structures  53  are used to clamp the product together, making clamping of the product more stable and reliable; on another hand, interference between the second clamping structure  323  and the third clamping structures  53  is prevented. 
     It should be noted that, when the strip cutting assembly  40  is used to cut off the material strip between the film wrapping rollers  11  and the film pulling assembly  20 , a material strip clamped by the film wrapping assembly  20  is a waste material. In order to prevent the waste material from affecting a next pulling action of the film pulling assembly  20 , the waste material needs to be removed and collected. Please refer to  FIGS.  21  to  23   , in order to remove the waste material, in the embodiment of the present application, the film wrapping equipment further includes a waste material disposal assembly. The waste material disposal assembly includes a waste material suction mechanism  613  and a motion driving mechanism. The motion driving mechanism is drivingly connected to the waste material suction mechanism  613 , so as to drive the waste material suction mechanism  613  to move between a material suction position and a waste material collection position. 
     When the waste material suction mechanism  613  moves to the material suction position, the waste material suction mechanism  613  is located between the film wrapping assembly  10  and the film pulling assembly  20 , so as to suck the waste material formed after the strip cutting assembly  40  cuts off the material strip. When the waste material suction mechanism  613  moves to the waste material collection position, the waste material suction mechanism  613  releases the waste material, so as to make the waste material be collected to the waste material collection position. 
     This way, when the material strip needs to be cut off, the waste material suction mechanism  613  moves to the material suction position, so that the waste material suction mechanism  613  is used to suction the material strip between the film wrapping assembly  10  and the film pulling assembly  20 . Then, the strip cutting assembly  40  is used to cut off the material strip between the film wrapping assembly  10  and the film pulling assembly  20 , and the film pulling assembly  20  releases the waste material, and at this time, the waste material is sucked onto the waste material suction mechanism  613 . And then, the waste material suction mechanism  613  moves to the waste material collection position and releases the waste material to the waste material collection position. 
     Specifically, in the embodiment, the motion driving mechanism includes a fixed frame  611 , a swing arm  612 , and a swing driving member  614 . One end of the swing arm  612  is rotatably connected to the fixed frame  611 , and the waste material suction mechanism  613  is mounted on another end of the swing arm  612 , so that the waste material suction mechanism  613  can swing between the material suction position and the waste material collection position with the swing arm  612 . The swing driving member  614  is mounted on the fixed frame  611  and is drivingly connected to the swing arm  612 , so as to drive the swing arm  612  to swing relative to the fixed frame  611 . Alternatively, the swing driving member  614  may adopt the motor. 
     Specifically, in the embodiment, the waste material suction mechanism  613  includes a mounting frame  6131 , a vacuum suction plate  6132 , and a suction driving member  6133 . The mounting frame  6131  is movably connected to the swing arm  612  along the third direction, and the vacuum suction plate  6132  is mounted on the mounting frame  6131 . The suction driving member  6133  is mounted on the swing arm  612  and is drivingly connected to the mounting frame  6131 , so as to drive the mounting frame  6131  and the vacuum suction plate  6132  on the mounting frame  6131  to extend outwardly or retract inwardly along the third direction. When the waste material suction mechanism  613  swings to the material suction position, the suction driving member  6133  drives the mounting frame  6131  to move along the third direction, so that the vacuum suction plate  6132  extends to the material strip, until the material strip is sucked. When the material strip is cut off, the suction driving member  6133  drives the mounting frame  6131  to reset along the third direction to make the vacuum suction plate  6132  sucked with the waste material be retracted, and then the waste material suction mechanism  613  swings to the waste material collection position with the swing arm  612 , the waste material is released to the waste material collection position. Alternatively, the suction driving member  6133  may adopt the cylinder. 
     Furthermore, the swing arm  612  is equipped with a fifth sliding block  6136 , and the mounting frame  6131  is arranged with a fifth sliding rail  6135  extending longitudinally along the third direction, and the fifth sliding block  6136  is slidably connected to the fifth sliding rail  6135 . This way, sliding cooperation of the fifth sliding block  6136  and the fifth sliding rail  6135  is used to guide movement of the mounting frame  6131  along the third direction. 
     Furthermore, the waste material suction mechanism  613  further includes two material pressing rollers  6134  mounted on the mounting frame  6131 . The two material pressing rollers  6134  are arranged corresponding to the two film wrapping rollers  11  one-to-one. When the waste material suction mechanism  613  swings to the material suction position, and the suction driving member  6133  drives the vacuum suction plate  6132  to extend to the material strip, each material pressing roller  6134  presses the material strip onto the corresponding film wrapping roller  11  tightly. This way, the pressing rollers  6134  are used to press the material strips onto the film wrapping rollers  11 , and then the strip cutting assembly  40  cuts off the material strips, which is conducive to improving cutting quality, ensuring that a distance between one end of the material strips and a top surface of the product meets process requirements, and further improving film wrapping accuracy. 
     In some embodiments, the waste material disposal assembly further includes a material pressing mechanism  64  arranged on the waste material collection position. The material pressing mechanism  64  includes a bearing plate  641 , a material pressing block  642 , and a material pressing driving member  643 . The bearing plate  641  is used to bear the waste materials released from the above-mentioned vacuum suction plate  6132  to the waste material collection position. The material pressing block  642  is rotatably connected to an edge of the bearing plate  641 , and the material pressing driving member  643  is mounted on the bearing plate  641  and is drivingly connected to the material pressing block  642 , so as to drive the material pressing block  642  to rotate relative to the bearing plate  641 . Wherein, a material pressing state of pressing the waste material onto the bearing plate  641  and an avoidance state of releasing pressing of the waste material onto the bearing plate  641  are provided in a rotating process of the material pressing block  642 . This way, the bearing plate  641  is used to bear the waste material released from the vacuum suction plate  6132 , and the material pressing block  642  is used to press the waste material onto the bearing plate  641  tightly. Alternatively, the material pressing driving member  643  may adopt the cylinder. 
     Specifically, in the embodiment, the waste material disposal assembly further includes a waste material collection box  63  arranged below the material pressing mechanism  64 . The bearing plate  641  can be reversibly arranged. When there are enough waste materials on the bearing plate  641 , the bearing plate  641  will be reversed, so that the waste materials on the bearing plate  641  face downward. At this time, the material pressing block  642  rotates to an escaping position, making the waste materials fall in the waste material collection box  63 . 
     Specifically, in the embodiment, the material pressing mechanism  64  further includes a fixed bracket  644  and a reversing driving member  645 . The bearing plate  641  is rotatably connected to the fixed bracket  644 , and the reversing driving member  645  is mounted on the fixed bracket  644  and is drivingly connected to the bearing plate  641 , so as to drive the bearing plate  641  to reverse (i.e., reverse 180°). 
     Specifically, in the embodiment, a waste material channel  62  is arranged between the material pressing mechanism  64  and the waste material collection box  63 . The waste materials fall from the bearing plate  641 , enters the waste material channel  62 , and then slides through the waste material channel  62  to the waste material collection box  63 . 
     A film wrapping process of the film wrapping equipment of the present application is described below in combination with the accompanying drawings (for convenience of description, it is described in the direction shown in  FIG.  1   ): 
     Firstly, the strip pulling moving seat  22  moves to a left side, until the two strip clamping mechanisms  21  clamp a material strip located on a left side of the film wrapping assembly  10 . The strip pulling moving seat  22  moves to a right side, until the two strip clamping mechanisms  21  pulls the material strip to pass through the two film wrapping rollers  11  and the first product clamping mechanism, and move to a right side of the film wrapping assembly  10 . 
     Then, the first product clamping mechanism clamps a product to be film wrapped to move downward, making the product be gradually inserted into the film wrapping channel  110 . In addition, the material strip is adhered to a bottom surface and left and right surfaces of the product under a rolling action of the two film wrapping rollers  11 . When a bottom end of the product passes through bottom portions of the two film wrapping rollers  11 , the second product clamping mechanism  32  clamps the bottom end of the product and moves downward together with the first product clamping mechanism, making the product continue to pass through the film wrapping channel  110 . 
     When the first product clamping mechanism contacts or is about to contact the film wrapping rollers  11 , the first product clamping mechanism and the second product clamping mechanism  32  discontinue to move downward. The first product clamping mechanism releases the product and moves upward to reset. The waste material suction mechanism  613  moves to an upper side of the two film wrapping rollers  11 , and the vacuum suction plate  6132  is used to suck a material strip between a right film wrapping roller  11  and the film pulling assembly  20 , and the two material pressing rollers  6134  press the material strips onto the two film wrapping rollers  11  tightly. The cutter mechanism  43  moves along an axial direction of the film wrapping rollers  11 , so as to cut off the material strips located on a left side and a right side of the two film wrapping rollers  11 . 
     And then, the two strip clamping mechanisms  21  release the waste material, the vacuum suction plate  6132  and the material pressing rollers  6134  move upward and swing to the waste material collection position with the swing arm  612  for waste material collection and disposal. At a same time, the second product clamping mechanism  32  continues to clamp the product to move downward, until the product passes through the film wrapping channel  110  to the feeding position. 
     And then, the two third clamping structures  53  clamp the product completing the film wrapping at the feeding position, the second product clamping mechanism  32  releases the product. The third clamping structures  53  drive the product to move to the removal position, so as to realize removal of the product. 
     Technical features of the above-described embodiments can be combined arbitrarily. In order to simplify the description, all possible combinations of the technical features in the above-described embodiments are not all described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification. 
     The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions are relatively specific and detailed, but should not be construed as limiting a scope of the present application. It should be pointed out that for those skilled in the art, without departing from a concept of the present application, several modifications and improvements can be made, which all belong to a protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to appended claims.