Film wrapping equipment

The present application relates to a film wrapping equipment. The film wrapping equipment includes: a film wrapping assembly including two film wrapping rollers arranged opposite to each other in a first direction, and a film wrapping channel for a product to pass through formed between the two film wrapping rollers; a film pulling assembly arranged on one side of the film wrapping assembly in the first direction; a product loading assembly used to clamp the product and drive the product to pass through the film wrapping channel; and a strip cutting assembly used to cut off material strip located on two sides of the two film wrapping rollers in the first direction.

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, the material strip being a film for wrapping the product;a product loading assembly used to grab the product and drive the product to pass through the film wrapping channel; anda strip cutting assembly used to cut off parts of the material strip 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 strip; the strip pulling moving seat is controllably moved 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 configured to move 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 to move close to each other or 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 move 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; andthe 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 move 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; andthe 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 an unloading 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; andthe 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 unloading position and a removal position, and the clamping sub-structure is used to clamp the product at the unloading 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; andwhen 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 as the cutter mechanism moves with the strip cutting moving seat along the second direction.

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.

For illustration, directional terms like first, second, and third directions used herein are shown in the figures, wherein: the reference character “x” represents a first direction, the reference character “y” represents a second direction, and the reference character “z” represents a third direction.

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 toFIGS.1to3, a film wrapping equipment is provided in an embodiment of the present application, including a film wrapping assembly10, a film pulling assembly20, a product loading assembly30, and a strip cutting assembly40(seeFIG.15).

Please refer toFIG.4andFIG.5, the film wrapping assembly10includes two film wrapping rollers11arranged opposite to each other in a first direction, and a film wrapping channel110for a product to pass through is formed between the two film wrapping rollers11.

Please continue to refer toFIGS.1to3, the film pulling assembly20is arranged on one side of the film wrapping assembly10in the first direction and is used to grab a material strip located on one side of the film wrapping assembly10away from the film pulling assembly20and pull the material strip along the first direction to move to one side of the film wrapping assembly10facing the film pulling assembly20. That is to say, the film pulling assembly20pulls the material strip from one side of the film wrapping assembly10to another side of the film wrapping assembly10along the first direction, so that the material strip passes through the film wrapping assembly10.

The product loading assembly30is used to grab the product and drive the product to pass through the above-mentioned film wrapping channel110. Under an action of the film pulling assembly20, the material strip passes through the film wrapping assembly10, so that when the product loading assembly30drives the product to pass through the film wrapping channel110, the material strip is wrapped on a bottom surface and two opposite surfaces of the product under a rolling action of the film wrapping rollers11, that is, film wrapping of the product is realized. The strip cutting assembly40is used to cut off parts of the material strip located on two sides of the above-mentioned two film wrapping rollers11in the first direction, making the material strip wrapped on the product and the material strip located upstream and downstream of the film wrapping assembly10to 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 strip 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 assembly20moves along the first direction until a starting end of the material strip located upstream of the film wrapping assembly10is clamped, and then returns along the first direction until the material strip is pulled over the film wrapping assembly10to a downstream side of the film wrapping assembly10. At this time, the material strip covers the film wrapping channel110between the two film wrapping rollers11. The product loading assembly30clamps the product and drives the product to be inserted from an end of the film wrapping channel110covered by the material strip. In a process of the product gradually passing through the film wrapping channel110, 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 rollers11. When the film wrapping is about to be completed, the strip cutting assembly40cuts off the material strip located on the two sides of the above-mentioned two film wrapping rollers11in the first direction, and then the product continues to pass through the film wrapping channel110until it completely passes through the film wrapping channel110, 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 rollers11(i.e., vertical film wrapping method), during a film wrapping process, the two film wrapping rollers11can 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 assembly40. 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 rollers11are 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 rollers11can rotate around their own axes. That is to say, the two film wrapping rollers11clamp the product tightly, and the two film wrapping rollers11are driven to rotate during a process of the product gradually passing through the two film wrapping rollers11.

It should also be noted that during an insertion process of the product into the film wrapping channel110, the product will drive the material strip on the two sides of the product to gradually enter the film wrapping channel110and be adhered onto the product. Therefore, the material strip located upstream will gradually be rolled towards the film wrapping channel110, and the film pulling assembly20will gradually move to the film wrapping rollers11along the first direction, so that the material strip located downstream of the product will also gradually move to the film wrapping channel110.

Please refer toFIGS.7to9, in the embodiment of the present application, the film pulling assembly20includes a strip pulling moving seat22and two strip clamping mechanisms21both used to clamp the material strip. The strip pulling moving seat22is controllably movable along the first direction. The two strip clamping mechanisms21are arranged on the strip pulling moving seat22at intervals along a second direction perpendicular to the first direction, and the two strip clamping mechanisms21can be close to each other or move away from each other along the second direction. This way, the two strip clamping mechanisms21are used to clamp the material strip together, and the two strip clamping mechanisms21can 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 mechanisms21can also be adjusted by driving the two strip clamping mechanisms21to be close to each other or move away from each other, so that it can adapt to clamping of the material strip with different width and size, which is conducive to improving compatibility of the equipment.

In some embodiments, the film pulling assembly20further includes a strip pulling lifting seat25arranged on the strip pulling moving seat22. The strip pulling lifting seat25is movable along a third direction relative to the strip pulling moving seat22. The two strip clamping mechanisms21are arranged on the strip pulling lifting seat25, so as to make the two strip clamping mechanisms21move along the third direction together with the strip pulling lifting seat25. 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 seat25is driven to ascend along the third direction, so as to prevent interference with the film wrapping assembly10during a moving process of the two strip clamping mechanisms21along the first direction. When the two strip clamping mechanisms21pull the material strip to a preset position, the strip pulling lifting seat25is driven to descend along the third direction, so as to drive the material strip to cover the two film wrapping rollers11.

It should be noted that, in the embodiment shown inFIG.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 assembly20further includes a strip pulling driving member23and a lifting driving member26. The strip pulling driving member23is drivingly connected to the strip pulling moving seat22, so as to drive the strip pulling moving seat22to move along the first direction. The lifting driving member26is mounted on the strip pulling moving seat22and is drivingly connected to the strip pulling lifting seat25, so as to drive the strip pulling lifting seat25to move along the third direction relative to the strip pulling moving seat22. This way, the strip pulling driving member23and the lifting driving member26are used to drive the two strip clamping mechanisms21respectively to move together along the first direction and the third direction. Alternatively, a cylinder can be used for the strip pulling driving member23, and the cylinder can also be used for the lifting driving member26.

Furthermore, the film pulling assembly20further includes a first sliding block222and a first sliding rail221. The first sliding block222is fixedly connected to the strip pulling moving seat22; and the first sliding rail221extends longitudinally along the first direction, and the first sliding block222is slidably connected to the first sliding rail221. This way, sliding cooperation of the first sliding block222and the first sliding rail221is used to guide movement of the strip pulling moving seat22along 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 seat22and the strip pulling lifting seat25. This guiding structure is used to guide movement of the strip pulling lifting seat25along the third direction relative to the strip pulling moving seat22, which is not limited here.

Specifically, in the embodiment, each strip clamping mechanism21includes a strip clamping mounting plate212, a gripper cylinder211, and a gripper210. The strip clamping mounting plate212is movably connected to the strip pulling lifting seat25along the second direction. The gripper cylinder211is mounted on the strip clamping mounting plate212and is drivingly connected to the gripper210. The gripper cylinder211can drive the gripper210to clamp or release the material strip.

Furthermore, the film pulling assembly20further includes two tightening driving members24corresponding to the two strip clamping mounting plates212one-to-one. Both the two tightening driving members24are mounted on the strip pulling lifting seat25and are drivingly connected to corresponding strip clamping mounting plates212, respectively, so as to drive the two strip clamping mounting plates212respectively to be close to each other or move away from each other, so as to drive the two grippers210to be close to each other or move away from each other, so that a distance between the two grippers210in the second direction can be adjusted. Alternatively, the tightening driving members24may adopt cylinders.

It should be noted that, movement of the strip clamping mounting plates212along 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 gripper210is equipped with a detecting sensor213for detecting a position of the material strip, so as to clamp the material strip accurately.

Please refer toFIG.4,FIG.5, andFIG.6, in the embodiment of the present application, the two film wrapping rollers11are configured close to each other or moving away from each other along the first direction. This way, a distance between the two film wrapping rollers11can be adjusted by the two film wrapping rollers11close 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 assembly10further includes a film wrapping driving member12, and a film wrapping transmission mechanism13connected to the film wrapping driving member12by transmission. The film wrapping transmission mechanism13is connected to the two film wrapping rollers11by transmission, so that the two film wrapping rollers11are driven by the film wrapping driving member12to be close to each other or move away from each other along the first direction, so that the distance between the two film wrapping rollers11can be adjusted.

Specifically, in the embodiment, the film wrapping transmission mechanism13includes a film wrapping fixed seat134, a cam slot plate132, two cam followers133, and two film wrapping mounting seats131. The film wrapping driving member12is mounted on the film wrapping fixed seat134. The cam slot plate132is mounted on an output shaft of the film wrapping driving member12, so as to be driven by the film wrapping driving member12to rotate. The two film wrapping mounting seats131are arranged close to each other or moving away from each other along the first direction, and the two film wrapping rollers11are rotatably connected to the two film wrapping mounting seats131around their own axes, respectively, so that the two film wrapping rollers11are driven to be close to each other or move away from each other along the first direction when the two film wrapping mounting seats131are close to each other or move away from each other along the first direction. The two cam followers133are mounted on the two film wrapping mounting seats131, respectively, and are cooperated with a cam slot136by transmission, so as to drive the two film wrapping mounting seats131to be close to each other or move away from each other along the first direction during a rotating process of the cam slot plate132, so that the two film wrapping rollers11are driven to be close to each other or move away from each other. Alternatively, the film wrapping driving member12may adopt a motor.

Furthermore, each film wrapping mounting seat131is equipped with a second sliding block1311. The second sliding block1311is slidably connected to a second sliding rail1312, and the second sliding rail1312extends longitudinally along the first direction. This way, sliding cooperation of the second sliding block1311and the second sliding rail1312is used to guide movement of the film wrapping mounting seat131along the first direction.

It should be noted that, there are two sets of the film wrapping driving members12and the film wrapping transmission mechanisms13, and the two sets of the film wrapping driving members12and the film wrapping transmission mechanisms13are arranged on two ends of the film wrapping rollers11, respectively (that is, two ends of the film wrapping rollers11along the second direction), so as jointly drive the two film wrapping rollers11to be close to each other or move away from each other.

Please refer toFIG.1,FIG.10, andFIG.11, in the embodiment of the present application, the product loading assembly30includes a first product clamping mechanism and a second product clamping mechanism32arranged opposite to each other in the third direction, and the film wrapping assembly10is located between the first product clamping mechanism and the second product clamping mechanism32. The first product clamping mechanism is used to clamp the product and to insert the product into the film wrapping channel110along the third direction. The second product clamping mechanism32is used to clamp product passing through the film wrapping channel110and pull the product out along the third direction to an unloading position.

This way, when performing film wrapping, the first product clamping mechanism31clamps one end of a product to be film wrapped, another end of the product is inserted into the film wrapping channel110between the two film wrapping rollers11along the third direction. The second product clamping mechanism32clamps an end of the product passing through the film wrapping channel110. At this time, two ends of the product in the third direction are clamped by the first product clamping mechanism31and the second product clamping mechanism32, respectively. Then, the first product clamping mechanism31and the second product clamping mechanism32jointly drive the product to continue to pass through the film wrapping channel110. Until the first product clamping mechanism31contacts or is about to contact the film wrapping rollers11, the product is discontinued to be inserted. The first product clamping mechanism31releases the product and resets, and the strip cutting assembly40cuts off the material strip. Then, the second product clamping mechanism32continues to drive the product to pass through the film wrapping channel110, 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 mechanism31includes a first lifting driving member311, a first lifting seat312, and a first clamping structure313. The first lifting driving member311is drivingly connected to the first lifting seat312, so as to drive the first lifting seat312to move along the third direction. The first clamping structure313used to clamp the product is mounted on the first lifting seat312, so that the first clamping structure313can move along the third direction together with the first lifting seat312. This way, when the product needs to be clamped, the first lifting driving member311drives the first lifting seat312to move along the third direction, until the first clamping structure313is driven to move to a loading position, so that the first clamping structure313clamps a product to be film wrapped on the loading position. Then, the first lifting driving member311drives the first lifting seat312to move to the film wrapping channel110along the third direction (at this time, the material strip passes through the first clamping structure313and the above-mentioned film wrapping rollers11), so that the product is inserted into the film wrapping channel110to complete the film wrapping. Alternatively, the first lifting driving member311may be a transformer. In some embodiments, the first product clamping mechanism31may be mounted on other parts (not shown in figure) of the film wrapping equipment.

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 toFIG.10andFIG.11, specifically, in the embodiment, the second product clamping mechanism32includes a second lifting driving member321, a second lifting seat322, and a second clamping structure323. The second lifting driving member321is drivingly connected to the second lifting seat322, so as to drive the second lifting seat322to move along the third direction. The second clamping structure323used to clamp the product is mounted on the second lifting seat322, so that the second clamping structure323can move along the third direction together with the second lifting seat322. This way, when the product needs to be clamped, the second clamping structure323clamps an end of the product (the end of the product is adhered with the material strip) passing through the film wrapping channel110. Then, the second lifting driving member321drives the second lifting seat322to move away from the film wrapping channel110along the third direction, so as to drive the product to continue to pass through the film wrapping channel110to complete the film wrapping. Alternatively, the second lifting driving member321may be the transformer.

Furthermore, the second clamping structure323includes a second air claw and two second clamping plates. The second air claw is mounted on the second lifting driving member321, 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 toFIGS.15to17, in the embodiment of the present application, the strip cutting assembly40includes a strip cutting moving seat42, a strip cutting driving member41, and a cutter mechanism43. The strip cutting moving seat42is movably arranged along the second direction perpendicular to the first direction. The strip cutting driving member41is drivingly connected to the strip cutting moving seat42, so as to drive the strip cutting moving seat42to move along the second direction. The cutter mechanism43is mounted on the strip cutting moving seat42so as to cut off the material strip as the cutter mechanism moves with the strip cutting moving seat along the second direction. Alternatively, the strip cutting driving member41may adopt the cylinder.

Specifically, in the embodiment, the strip cutting moving seat42is equipped with a third sliding block412, and the third sliding block412is slidably cooperated with a third sliding rail411, and the third sliding rail411extends longitudinally along the second direction. This way, sliding cooperation of the third sliding block412and the third sliding rail411is used to guide movement of the strip cutting moving seat42along the second direction.

Please refer toFIGS.18to20, in some embodiments, the cutter mechanism43includes a cutter fixed seat431, a cutter quick removal seat432, and a cutter433. The cutter fixed seat431is mounted on the strip cutting moving seat42, the cutter quick removal seat432is detachably connected to the cutter fixed seat431, and the cutter433is detachably connected to the cutter quick removal seat432. This way, when the cutter433needs to be replaced, the cutter quick removal seat432is removed from the cutter fixed seat431, then the cutter433is removed from the cutter quick removal seat432and replaced with a new cutter433, finally, the cutter quick removal seat432is remounted on the cutter fixed seat431. Replacement of the cutter433is convenient and fast.

Specifically, in the embodiment, the cutter quick removal seat432has a positioning protrusion4321and a magnetic suction portion4322. The cutter433has a positioning slot4331corresponding to the positioning protrusion4321. This way, the cutter433is attached to the cutter quick removal seat432, so that the positioning protrusion4321penetrates the positioning slot4331, and the magnetic suction portion4322is attached and fixed to the cutter433. Furthermore, the magnetic suction portion4322can be a magnet embedded on the cutter quick removal seat432.

Specifically, in the embodiment, the cutter mechanism43further includes a pressing screw435and a wedge block434. The cutter fixed seat431has an insertion groove. The cutter quick removal seat432inserts into the insertion groove, the wedge block434is used to tighten the cutter quick removal seat432in the insertion groove. The pressing screw435is threaded to the cutter fixed seat431, and one end of the pressing screw435abuts the wedge block434to limit the wedge block434. This way, when the cutter quick removal seat432needs to be removed, the pressing screw435is firstly screwed out, and the wedge block434is taken out to relieve tightening of the cutter quick removal seat432. At this time, the cutter quick removal seat432can be easily pulled out from the insertion groove.

It should be noted that, because the material strip located on the two sides of the film wrapping assembly10in the first direction need to be cut off, the film wrapping equipment can include two of the strip cutting assemblies40arranged on the two sides of the film wrapping assembly10in the first direction, respectively. The two of the strip cutting assemblies40can be used to cut off the material strip at a same time.

Please refer toFIGS.12to14, in the embodiment of the present application, the film wrapping equipment further includes a product removal assembly50. The product removal assembly50includes a clamping sub-structure53and a removal driving structure. The clamping sub-structure53is a third clamping structure53. The removal driving structure is drivingly connected to the third clamping structure53, so as to drive the third clamping structure53to move between the unloading position and a removal position. The third clamping structure53is used to clamp a product film wrapped at the unloading position. This way, when the product completes the film wrapping and moves to the unloading position with the second product clamping mechanism32, the third clamping structure53clamps the product, and then the removal driving structure drives the third clamping structure53to move (i.e., move along the first direction) to the removal position. Alternatively, the third clamping structure53may 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 plate52and a removal driving member51. The removal movable plate52is movably arranged (i.e., movably arranged along the first direction), and the removal driving member51is drivingly connected to the removal movable plate52, so as to drive the removal movable plate52to move. The third clamping structure53is mounted on the removal movable plate52, so that the third clamping structure53can move between the unloading position and the removal position with the removal movable plate52. Alternatively, the removal driving member51can adopt the transformer.

Furthermore, the removal movable plate52is equipped with a fourth sliding block512, and the fourth sliding block512is slidably connected to a fourth sliding rail511. This way, sliding cooperation of the fourth sliding block512and the fourth sliding rail511is used to guide movement of the removal movable plate52.

Specifically, in the embodiment, there are two of the third clamping structures53. When the two of the third clamping structures53move to the unloading position with the removal movable plate52, and when the second clamping structure323also moves to the unloading position, the second clamping structure323is located between the two third clamping structures53, and the second clamping structure323and the third clamping structure53clamp the product along a same direction together. This way, on one hand, the two third clamping structures53are used to clamp the product together, making clamping of the product more stable and reliable; on another hand, interference between the second clamping structure323and the third clamping structures53is prevented.

It should be noted that, when the strip cutting assembly40is used to cut off the material strip between the film wrapping rollers11and the film pulling assembly20, a material strip clamped by the film wrapping assembly20is a waste material. In order to prevent the waste material from affecting a next pulling action of the film pulling assembly20, the waste material needs to be removed and collected. Please refer toFIGS.21to23, 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 mechanism613and a motion driving mechanism. The motion driving mechanism is drivingly connected to the waste material suction mechanism613, so as to drive the waste material suction mechanism613to move between a material suction position and a waste material collection position.

When the waste material suction mechanism613moves to the material suction position, the waste material suction mechanism613is located between the film wrapping assembly10and the film pulling assembly20, so as to suck the waste material formed after the strip cutting assembly40cuts off the material strip. When the waste material suction mechanism613moves to the waste material collection position, the waste material suction mechanism613releases 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 mechanism613moves to the material suction position, so that the waste material suction mechanism613is used to suction the material strip between the film wrapping assembly10and the film pulling assembly20. Then, the strip cutting assembly40is used to cut off the material strip between the film wrapping assembly10and the film pulling assembly20, and the film pulling assembly20releases the waste material, and at this time, the waste material is sucked onto the waste material suction mechanism613. And then, the waste material suction mechanism613moves 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 frame611, a swing arm612, and a swing driving member614. One end of the swing arm612is rotatably connected to the fixed frame611, and the waste material suction mechanism613is mounted on another end of the swing arm612, so that the waste material suction mechanism613can swing between the material suction position and the waste material collection position with the swing arm612. The swing driving member614is mounted on the fixed frame611and is drivingly connected to the swing arm612, so as to drive the swing arm612to swing relative to the fixed frame611. Alternatively, the swing driving member614may adopt the motor.

Specifically, in the embodiment, the waste material suction mechanism613includes a mounting frame6131, a vacuum suction plate6132, and a suction driving member6133. The mounting frame6131is movably connected to the swing arm612along the third direction, and the vacuum suction plate6132is mounted on the mounting frame6131. The suction driving member6133is mounted on the swing arm612and is drivingly connected to the mounting frame6131, so as to drive the mounting frame6131and the vacuum suction plate6132on the mounting frame6131to extend outwardly or retract inwardly along the third direction. When the waste material suction mechanism613swings to the material suction position, the suction driving member6133drives the mounting frame6131to move along the third direction, so that the vacuum suction plate6132extends to the material strip, until the material strip is sucked. When the material strip is cut off, the suction driving member6133drives the mounting frame6131to reset along the third direction to make the vacuum suction plate6132sucked with the waste material be retracted, and then the waste material suction mechanism613swings to the waste material collection position with the swing arm612, the waste material is released to the waste material collection position. Alternatively, the suction driving member6133may adopt the cylinder.

Furthermore, the swing arm612is equipped with a fifth sliding block6136, and the mounting frame6131is arranged with a fifth sliding rail6135extending longitudinally along the third direction, and the fifth sliding block6136is slidably connected to the fifth sliding rail6135. This way, sliding cooperation of the fifth sliding block6136and the fifth sliding rail6135is used to guide movement of the mounting frame6131along the third direction.

Furthermore, the waste material suction mechanism613further includes two material pressing rollers6134mounted on the mounting frame6131. The two material pressing rollers6134are arranged corresponding to the two film wrapping rollers11one-to-one. When the waste material suction mechanism613swings to the material suction position, and the suction driving member6133drives the vacuum suction plate6132to extend to the material strip, each material pressing roller6134presses the material strip onto the corresponding film wrapping roller11tightly. This way, the pressing rollers6134are used to press the material strip onto the film wrapping rollers11, and then the strip cutting assembly40cuts off the material strip, which is conducive to improving cutting quality, ensuring that a distance between one end of the material strip 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 mechanism64arranged on the waste material collection position. The material pressing mechanism64includes a bearing plate641, a material pressing block642, and a material pressing driving member643. The bearing plate641is used to bear the waste materials released from the above-mentioned vacuum suction plate6132to the waste material collection position. The material pressing block642is rotatably connected to an edge of the bearing plate641, and the material pressing driving member643is mounted on the bearing plate641and is drivingly connected to the material pressing block642, so as to drive the material pressing block642to rotate relative to the bearing plate641. Wherein, a material pressing state of pressing the waste material onto the bearing plate641and an avoidance state of releasing pressing of the waste material onto the bearing plate641are provided in a rotating process of the material pressing block642. This way, the bearing plate641is used to bear the waste material released from the vacuum suction plate6132, and the material pressing block642is used to press the waste material onto the bearing plate641tightly. Alternatively, the material pressing driving member643may adopt the cylinder.

Specifically, in the embodiment, the waste material disposal assembly further includes a waste material collection box63arranged below the material pressing mechanism64. The bearing plate641can be reversibly arranged. When there are enough waste materials on the bearing plate641, the bearing plate641will be reversed, so that the waste materials on the bearing plate641face downward. At this time, the material pressing block642rotates to an escaping position, making the waste materials fall in the waste material collection box63.

Specifically, in the embodiment, the material pressing mechanism64further includes a fixed bracket644and a reversing driving member645. The bearing plate641is rotatably connected to the fixed bracket644, and the reversing driving member645is mounted on the fixed bracket644and is drivingly connected to the bearing plate641, so as to drive the bearing plate641to reverse (i.e., reverse1800).

Specifically, in the embodiment, a waste material channel62is arranged between the material pressing mechanism64and the waste material collection box63. The waste materials fall from the bearing plate641, enters the waste material channel62, and then slides through the waste material channel62to the waste material collection box63.

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 inFIG.1):

Firstly, the strip pulling moving seat22moves to a left side, until the two strip clamping mechanisms21clamp a material strip located on a left side of the film wrapping assembly10. The strip pulling moving seat22moves to a right side, until the two strip clamping mechanisms21pulls the material strip to pass through the two film wrapping rollers11and the first product clamping mechanism, and move to a right side of the film wrapping assembly10.

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 channel110. 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 rollers11. When a bottom end of the product passes through bottom portions of the two film wrapping rollers11, the second product clamping mechanism32clamps 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 channel110.

When the first product clamping mechanism contacts or is about to contact the film wrapping rollers11, the first product clamping mechanism and the second product clamping mechanism32discontinue to move downward. The first product clamping mechanism releases the product and moves upward to reset. The waste material suction mechanism613moves to an upper side of the two film wrapping rollers11, and the vacuum suction plate6132is used to suck a material strip between a right film wrapping roller11and the film pulling assembly20, and the two material pressing rollers6134press the material strip onto the two film wrapping rollers11tightly. The cutter mechanism43moves along an axial direction of the film wrapping rollers11, so as to cut off the material strip located on a left side and a right side of the two film wrapping rollers11.

And then, the two strip clamping mechanisms21release the waste material, the vacuum suction plate6132and the material pressing rollers6134move upward and swing to the waste material collection position with the swing arm612for waste material collection and disposal. At a same time, the second product clamping mechanism32continues to clamp the product to move downward, until the product passes through the film wrapping channel110to the unloading position.

And then, the two third clamping structures53clamp the product completing the film wrapping at the unloading position, the second product clamping mechanism32releases the product. The third clamping structures53drive 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.