Waterproof Shoe And Manufacturing Method For The Waterproof Shoe

A waterproof shoe and a manufacturing method for the waterproof shoe are disclosed. The waterproof shoe includes a waterproof shoe upper, a sealing layer and a shoe sole. A bottom portion of the waterproof shoe upper is open and is provided with a connecting member for limiting a periphery of the bottom portion of the waterproof shoe upper from extending outwardly. The connecting member connects a plurality of positions on the periphery of the bottom portion of the waterproof shoe upper. The sealing layer is injection-molded at the bottom portion of the waterproof shoe upper and penetrates into the periphery of the bottom portion of the waterproof shoe upper. The sealing layer and the waterproof shoe upper are enclosed to form a waterproof shoe cover with a sealed bottom portion.

CROSS-REFERENCE TO RELATED APPLICATION

This application is based on and claims the benefit of priority from Chinese Patent Application No. 202310181209.1, filed on 27 Feb. 2023, the entirety of which is incorporated by reference herein.

TECHNICAL FIELD

The disclosure relates to the technical field of shoes, and particularly to a waterproof shoe and a manufacturing method for the waterproof shoe.

BACKGROUND

Some existing waterproof shoes usually comprise a waterproof shoe cover and a shoe sole arranged at a bottom portion of the waterproof shoe cover, wherein the waterproof shoe cover comprises a waterproof shoe upper and a mid-sole. The waterproof shoe upper usually consists of a waterproof membrane, an outer shoe upper adhered to an outer side of the waterproof membrane and an inner shoe lining adhered to an inner side of the waterproof membrane. An upper portion of the waterproof shoe upper is provided with a topline, and a bottom portion of the waterproof shoe upper is open. During manufacturing, a periphery of the bottom portion of the waterproof shoe upper is sewn to the mid-sole by wrapping, and since the periphery of the bottom portion of the waterproof shoe upper may produce a lot of wrinkles at a shoe head and a shoe heel, it is generally necessary to adhere one waterproof gasket below the mid-sole and brush glue to compact the waterproof gasket, so as to obtain the waterproof shoe cover. Finally, the shoe sole is adhered to the bottom portion of the waterproof shoe cover. For such waterproof shoe, the waterproof membrane of the waterproof shoe upper and the waterproof gasket are always separated by a layer of non-waterproof outer shoe upper, the waterproof membrane cannot be contacted with the waterproof gasket directly to form a sealed closure, and there are a lot of wrinkles between an upper foot of the waterproof shoe upper and the mid-sole, so that it is difficult to ensure that all gaps between the upper foot and the mid-sole can be blocked when brushing glue. Therefore, the bottom portion of the waterproof shoe cover has poor sealing performance, and the waterproof performance of the waterproof shoe needs to be further improved.

SUMMARY

The disclosure aims to solve at least one of the technical problems in the existing technology. Therefore, the disclosure provides a waterproof shoe, wherein a bottom portion of a waterproof shoe cover of the waterproof shoe has better sealing performance, so that the waterproof shoe has better waterproof performance.

The disclosure further provides a manufacturing method for the waterproof shoe.

A waterproof shoe according to an embodiment in a first aspect of the disclosure comprises a waterproof shoe upper, a sealing layer and a shoe sole, a bottom portion of the waterproof shoe upper is open, the bottom portion of the waterproof shoe upper is provided with a connecting member for limiting a periphery of the bottom portion of the waterproof shoe upper from extending outwardly, and the connecting member is configured to connect a plurality of positions on the periphery of the bottom portion of the waterproof shoe upper; the sealing layer is injection-molded at the bottom portion of the waterproof shoe upper and penetrates into the periphery of the bottom portion of the waterproof shoe upper, and the sealing layer and the waterproof shoe upper are enclosed to form a waterproof shoe cover with a sealed bottom portion; and the shoe sole is located on a lower side of the sealing layer and adhered to the sealing layer.

According to some embodiments of the disclosure, the connecting member comprises a mid-sole, a periphery of the mid-sole and the periphery of the bottom portion of the waterproof shoe upper are adhered or sewn together, a part of the sealing layer fills and seals a gap between the mid-sole and the periphery of the bottom portion of the waterproof shoe upper, a part of the sealing layer is located on a lower side of the connecting member and forms a sealing bottom layer, a part of the sealing layer penetrates into the mid-sole, and a part of the sealing layer is located on an upper side of the mid-sole and forms a sealing inner layer.

According to some embodiments of the disclosure, the mid-sole is overlapped on an upper side of the periphery of the bottom portion of the waterproof shoe upper and adhered to the periphery of the bottom portion of the waterproof shoe upper, or the periphery of the mid-sole and the periphery of the bottom portion of the waterproof shoe upper are butted and sewn together.

According to some embodiments of the disclosure, the connecting member consists of a plurality of connecting lines which connect the plurality of positions on the periphery of the bottom portion of the waterproof shoe upper, and the sealing layer fills and seals a pinhole in the periphery of the bottom portion of the waterproof shoe upper and a gap in the connecting member, and wraps the connecting lines.

According to some embodiments of the disclosure, a thickness of the sealing layer is less than 15 mm.

According to some embodiments of the disclosure, a thickness of the sealing bottom layer is less than 8 mm, and a thickness of the sealing inner layer ranges from 0.5 mm to 1 mm.

According to some embodiments of the disclosure, the sealing layer is a PU layer or a rubber layer.

According to some embodiments of the disclosure, the waterproof shoe upper consists of at least one piece of composite waterproof fabric, the composite waterproof fabric comprises a waterproof layer, an outer fabric and an inner fabric, the outer fabric is adhered to an outer side surface of the waterproof layer, and the inner fabric is adhered to an inner side surface of the waterproof layer.

A manufacturing method for the waterproof shoe according to an embodiment in a second aspect of the disclosure comprises the following steps: step 1: connecting the plurality of positions on the periphery of the bottom portion of the waterproof shoe upper through the connecting member to limit the periphery of the bottom portion of the waterproof shoe upper from extending outwardly; step 2: injection-molding the sealing layer at the bottom portion of the waterproof shoe upper by an injection device, wherein a liquid glue material is capable of penetrating into the periphery of the bottom portion of the waterproof shoe upper during molding of the sealing layer; and step 3: adhering the shoe sole to the sealing bottom layer of the sealing layer.

According to some embodiments of the disclosure, in the step 2, a shoe last for supporting the waterproof shoe upper is inserted into the waterproof shoe upper, the injection device comprises an injection mold, the injection mold comprises a bottom mold and an upper mold attached to an upper side of the bottom mold, an upper surface of the bottom mold is provided with a molding groove for injecting the liquid glue material, the upper mold comprises two clamping modules rotatably connected, the two clamping modules are capable of being relatively rotated to open or close, the two clamping modules are enclosed to form a clamping hole for clamping the bottom portion of the waterproof shoe upper, the clamping hole is arranged opposite to the molding groove, a positioning plate for mutually matching and abutting with the shoe last is arranged above one of the clamping modules, and the other one of the clamping modules is rotatably connected with the bottom mold, wherein a horizontal side of the bottom mold is provided with a loading and unloading station for loading and unloading the waterproof shoe upper, and the upper mold is capable of being rotated to the loading and unloading station.

The waterproof shoe and the manufacturing method for the waterproof shoe according to the embodiments of the disclosure have at least the following beneficial effects. By the manufacturing method above, the sealing layer can be injection-molded at the bottom portion of the waterproof shoe upper. During molding of the sealing layer, the liquid glue material can penetrate into the periphery of the bottom portion of the waterproof shoe upper and fill the gap between the connecting member and the periphery of the bottom portion of the waterproof shoe upper under a pressure. After the liquid glue material is cooled to form the sealing layer, even if there are a lot of wrinkles at the periphery of the bottom portion of the waterproof shoe upper, the sealing layer can also effectively fill and block the gap between the connecting member and the periphery of the bottom portion of the waterproof shoe upper, the sealing layer can completely seal the bottom portion of the waterproof shoe upper. Then the sealing layer and the waterproof shoe upper are enclosed to form the waterproof shoe cover with better bottom sealing performance, so that the waterproof shoe provided by the disclosure has better waterproof performance, and a waterproof gasket can be omitted. The sealing layer can also improve a strength of the bottom portion of the waterproof shoe cover, so that the waterproof shoe is more durable.

Additional aspects and advantages of the disclosure will be given in part in the following description, which will become apparent from the following description or be understood through practice of the disclosure.

REFERENCE NUMERALS

110refers to waterproof shoe upper,111refers to waterproof layer,112refers to outer fabric,113refers to inner fabric,120refers to mid-sole,130refers to connecting line,200refers to sealing layer,210refers to sealing bottom layer,220refers to sealing inner layer,300refers to shoe sole,400refers to injection mold,410refers to bottom mold,411refers to molding groove,420refers to upper mold,421refers to clamping module,422refers to positioning plate,423refers to clamping hole,430refers to first locking apparatus,431refers to first lock catch,432refers to first shaft lever,433refers to first operating handle,440refers to second locking apparatus,441refers to second lock catch,442refers to second shaft lever, and443refers to second operating handle.

DETAILED DESCRIPTION

Embodiments of the disclosure are described in detail hereinafter, examples of the embodiments are shown in the drawings, and the same or similar reference numerals throughout the drawings denote the same or similar elements or elements having the same or similar functions. The embodiments described hereinafter with reference to the drawings are exemplary, are only intended to explain the disclosure, and cannot be understood as limiting the disclosure.

In the description of the disclosure, it should be understood that, the orientation or position relationship related to the orientation description, such as the orientation or position relationship indicated by the terms “upper”, “lower”, “front”, “rear”, “left”, “right”, and the like is based on the orientation or position relationship shown in the drawings, which is only used for convenience of the description of the disclosure and simplification of the description instead of indicating or implying that the indicated device or element must have a specific orientation, and be constructed and operated in a specific orientation, and thus should not be understood as a limitation to the disclosure.

In the description of the disclosure, the meaning of several refers to being one or more, and the meaning of multiple refers to being two or more. The meanings of greater than, less than, more than, etc., are understood as not including this number, while the meanings of above, below, within, etc., are understood as including this number. If there is the description of first and second, it is only for the purpose of distinguishing between technical features, and should not be understood as indicating or implying relative importance, implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

In the description of the disclosure, unless otherwise explicitly defined, the terms “setting”, “mounting” and “connecting” should be understood in a broad sense, and those of ordinary skills in the art can reasonably determine the specific meanings of the above terms in the disclosure in combination with the specific contents of the technical solution.

With reference toFIG.1toFIG.6, a waterproof shoe provided by an embodiment of the disclosure comprises a waterproof shoe upper110, a sealing layer200and a shoe sole300. A bottom portion of the waterproof shoe upper110is open, the bottom portion of the waterproof shoe upper110is provided with a connecting member for limiting a periphery of the bottom portion of the waterproof shoe upper110from extending outwardly, and the connecting member connects a plurality of positions on the periphery of the bottom portion of the waterproof shoe upper110, thus avoiding the bottom portion of the waterproof shoe upper110from spreading outwardly. The sealing layer200is injection-molded at the bottom portion of the waterproof shoe upper110and penetrates into the periphery of the bottom portion of the waterproof shoe upper110, and the sealing layer200and the waterproof shoe upper110are enclosed to form a waterproof shoe cover with a sealed bottom portion. The shoe sole300is located on a lower side of the sealing layer200and adhered to the sealing layer200.

An embodiment of the disclosure further provides a manufacturing method for the waterproof shoe above. The manufacturing method comprises the following steps: step 1: connecting the plurality of positions on the periphery of the bottom portion of the waterproof shoe upper110through the connecting member to limit the periphery of the bottom portion of the waterproof shoe upper110from extending outwardly; step 2: injection-molding the sealing layer200at the bottom portion of the waterproof shoe upper110by an injection device, wherein a liquid glue material is capable of penetrating into the periphery of the bottom portion of the waterproof shoe upper110during molding of the sealing layer200; and step 3: adhering the shoe sole300to the sealing bottom layer210of the sealing layer200.

By the manufacturing method above, the sealing layer200may be injection-molded at the bottom portion of the waterproof shoe upper110. During molding of the sealing layer200, the liquid glue material may penetrate into the periphery of the bottom portion of the waterproof shoe upper110and fill the gap between the connecting member and the periphery of the bottom portion of the waterproof shoe upper110under a pressure. After the liquid glue material is cooled to form the sealing layer200, even if there are a lot of wrinkles at the periphery of the bottom portion of the waterproof shoe upper110, the sealing layer200can also effectively fill and block the gap between the connecting member and the periphery of the bottom portion of the waterproof shoe upper110, the sealing layer200can completely seal the bottom portion of the waterproof shoe upper110. Then the sealing layer200and the waterproof shoe upper110are enclosed to form the waterproof shoe cover with better bottom sealing performance, so that the waterproof shoe provided by the disclosure has better waterproof performance, and a waterproof gasket can be omitted. The sealing layer200can also improve a connection strength of the bottom portion of the waterproof shoe cover, so that the waterproof shoe is more durable. In addition, a lower surface of the sealing layer200above is relatively smooth and flat, so that the sealing layer can be adhered to the shoe sole300more conveniently.

In the disclosure, a setting method of combining the injection-molded sealing layer200with the adhered shoe sole300is used in the waterproof shoe, manufacturers may adhere the shoe soles300made of different materials for different uses to the sealing layer200as required, and the adhered shoe sole300has more choices in shape and appearance. In addition, the adhered shoe sole300has been designed with various protrusions, patterns or other anti-skid structures, so that it is unnecessary to arrange the anti-skid structures with high precision requirements and high injection-molding difficulty on a lower surface of the sealing layer200. The sealing layer200is simple in appearance and low in precision requirements, the sealing layer200is easy to be injection-molded, and a mold used for injection-molding the sealing layer200is also simple, thus ensuring that the sealing layer200has a low processing cost and a high qualified rate. Therefore, the waterproof shoe provided by the disclosure has better waterproof performance and can also ensure the cost advantage, thus being beneficial for improving the market competitiveness.

It should be noted that the flatness and smoothness of the lower surface of the sealing layer200are described relatively to a lower surface of the shoe sole300, and the flat and smooth lower surface of the sealing layer200refers to that the lower surface of the sealing layer200has no obvious structures, such as protrusions and patterns.

Some traditional waterproof shoes comprise a non-waterproof shoe cover and a waterproof inner liner placed in the shoe cover, a gap exists between the waterproof inner liner and the shoe cover of such waterproof shoe, and external water is easy to enter and stay between the waterproof inner liner and the shoe cover, resulting in a heavy shoe and easy frostbite of foot of a user in cold weather. For the waterproof shoe provided by the present application, the waterproof shoe cover has good waterproof performance, and it is unnecessary to arrange the waterproof inner liner in the waterproof shoe cover, so that the problems of the heavy shoe and the frostbite of foot caused by external water entering the waterproof shoe can be effectively avoided.

For a waterproof shoe in the existing technology, a thickness between a bottom surface of the shoe sole300and an upper side surface of the mid-sole120at waist and heel positions of the waterproof shoe is usually required to be greater than 30 mm. In the present application, a thickness of the sealing layer200is less than 15 mm, and manufacturers may adhere the shoe sole300to a lower side of the sealing layer200, so that a thickness between the bottom surface of the shoe sole300and an upper side surface of the connecting member at waist and heel positions of the waterproof shoe can meet use requirements.

In some embodiments, after finishing the step 2, a sealing performance test may be performed on the waterproof shoe cover. Due to the arrangement of the sealing layer200, the bottom portion of the waterproof shoe cover is well sealed, and generally, only the waterproof shoe upper110will possibly be poor in sealing. It is conceivable that when the waterproof shoe cover becomes a waste product due to poor sealing of the waterproof shoe upper110, material waste can be reduced due to the thin thickness of the sealing layer200.

With reference toFIG.1toFIG.4, it is conceivable that, in some embodiments, the connecting member comprises a mid-sole120, and a periphery of the mid-sole120and the periphery of the bottom portion of the waterproof shoe upper110are adhered or sewn together, wherein a part of the sealing layer200above fills and seals a gap between the mid-sole120and the periphery of the bottom portion of the waterproof shoe upper110, a part of the sealing layer200is located on a lower side of the connecting member and forms a sealing bottom layer210, a part of the sealing layer200is located on an upper side of the mid-sole120and forms a sealing inner layer220. Due to existence of pores in the mid-sole120, and a part of the sealing layer200may penetrate into the mid-sole120. In this way, the sealing layer200can wrap the mid-sole120and the periphery of the bottom portion of the waterproof shoe upper110, and even if there are a lot of wrinkles on the periphery of the bottom portion of the waterproof shoe upper110, the sealing layer200can also effectively fill and seal a gap and/or a pinhole between the mid-sole120and the periphery of the bottom portion of the waterproof shoe upper110, thus forming the waterproof shoe cover with better bottom sealing performance. In the present application, the bottom portion of the waterproof shoe upper110may be connected by the mid-sole120. Since the sealing layer200can improve a connection strength between the mid-sole120and the periphery of the bottom portion of the waterproof shoe upper110, the mid-sole120and the periphery of the bottom portion of the waterproof shoe upper110may be connected by a traditional sewing method or an adhesive method, wherein the adhesive method is simpler and more convenient than the sewing method, which is beneficial for improving production efficiency.

Specifically, when the connecting member above is set as the mid-sole120, a thickness of the sealing bottom layer210is less than 8 mm, and a thickness of the sealing inner layer220ranges from 0.5 mm to 1 mm, while a thickness of the periphery of the bottom portion of the waterproof shoe upper110is usually less than 2 mm, and a thickness of the mid-sole120is usually less than 2 mm, so that the thickness of the entire sealing layer200may be controlled within 11 mm. Therefore, the sealing layer200is relatively thin.

It is conceivable that the thickness of the sealing bottom layer210close to a head portion of the waterproof shoe cover ranges from 1.5 mm to 2.5 mm, the thickness of the sealing bottom layer210close to a waist portion of the waterproof shoe cover ranges from 3 mm to 4 mm, and the thickness of the sealing bottom layer210close to a heel portion of the waterproof shoe cover ranges from 2.5 mm to 3.5 mm. By the above arrangement, the sealing layer200can adapt to a foot shape of a consumer, thus bringing more comfortable experience to the consumer.

With reference toFIG.1andFIG.2, in some embodiments, when the mid-sole120is connected with the periphery of the bottom portion of the waterproof shoe upper110by the adhesive method, the mid-sole120is overlapped on an upper side of the periphery of the bottom portion of the waterproof shoe upper110and adhered to the periphery of the bottom portion of the waterproof shoe upper110. In the step 1, glue may be conveniently coated on the periphery of the mid-sole120, and then the periphery of the bottom portion of the waterproof shoe upper110may be conveniently folded and overlapped on the mid-sole120, so that the mid-sole120and the periphery of the bottom portion of the waterproof shoe upper110are adhered, realizing a relatively simple adhering process.

With reference toFIG.3andFIG.4, in some embodiments, when the mid-sole120is connected with the periphery of the bottom portion of the waterproof shoe upper110by the sewing method, the periphery of the mid-sole120and the periphery of the bottom portion of the waterproof shoe upper110are butted and sewn together, so that the total thickness of the sealing layer200is thinner, thus reducing the cost.

It should be noted that, in other embodiments, the mid-sole120may also be located on a lower side of the periphery of the bottom portion of the waterproof shoe upper110, and sewn with or adhered to the periphery of the bottom portion of the waterproof shoe upper110.

With reference toFIG.5toFIG.7, it is conceivable that, in some embodiments, the connecting member consists of a plurality of connecting lines130which connect the plurality of positions on the periphery of the bottom portion of the waterproof shoe upper110, and the sealing layer200may fill and seal a pinhole in the periphery of the bottom portion of the waterproof shoe upper110and a gap in the connecting member, and wrap the connecting lines130, thus forming the waterproof shoe cover with better bottom sealing performance. Compared with the mid-sole120, the connecting member consisting of the connecting lines130above has a wider gap, and during injection-molding of the sealing layer200, the liquid glue material is easier to penetrate into and fill the gap on the connecting member, and the liquid glue material is easier to wrap the connecting lines130, thus being convenient for molding of the sealing layer200. In addition, compared with the mid-sole120, the connecting lines130have less influence on flexibility, air permeability or other performances of the sealing layer200, and the sealing layer200has sufficient flexibility, so that the waterproof shoe provided by the present application may be used without adding an insole, and sufficient comfort of the waterproof shoe can also be ensured. In this way, a process of adding the insole can be omitted in use of the waterproof shoe, and the problem of losing the insole can be avoided, thus being convenient to use and reducing the cost.

It is conceivable that, in a specific implementation process, the sealing layer200may also be a PU layer, a rubber layer or other plastic layers.

With reference toFIG.2andFIG.4, in some embodiments, it is conceivable that the waterproof shoe upper110consists of at least one piece of composite waterproof fabric, the composite waterproof fabric comprises a waterproof layer111, an outer fabric112and an inner fabric113, the outer fabric112is adhered to an outer side surface of the waterproof layer111, and the inner fabric113is adhered to an inner side surface of the waterproof layer111. By the above arrangement, the composite waterproof fabric has good waterproof performance.

With reference toFIG.8toFIG.10, in some embodiments, it is conceivable that, in the step 2, a shoe last for supporting the waterproof shoe upper110is inserted into the waterproof shoe upper110. The injection device comprises an injection mold400, the injection mold400comprises a bottom mold410and an upper mold420attached to an upper side of the bottom mold410, an upper surface of the bottom mold410is provided with a molding groove411for injecting the liquid glue material. The upper mold420comprises two clamping modules421rotatably connected, the two clamping modules421are capable of being relatively rotated to open or close, the two clamping modules421are enclosed to form a clamping hole423for clamping the bottom portion of the waterproof shoe upper110, the clamping hole423is arranged opposite to the molding groove411. A positioning plate422for mutually matching and abutting with the shoe last is arranged above one clamping module421, and the other clamping module421is rotatably connected with the bottom mold410, wherein a horizontal side of the bottom mold410is provided with a loading and unloading station for loading and unloading the waterproof shoe upper110, the upper mold420is capable of being rotated to the loading and unloading station, and the upper mold420can load and unload the waterproof shoe upper110more conveniently at the loading and unloading station. By the above arrangement, the two clamping modules421can match with each other to clamp the waterproof shoe upper110, and the waterproof shoe upper110can be positioned through matching between the positioning plate422and the shoe last, thus ensuring that the sealing layer200can be smoothly molded with high molding accuracy.

It should be noted that the shoe last may be inserted into the waterproof shoe upper110in the step 1 to assist the connecting member to connect the periphery of the bottom portion of the waterproof shoe upper110. Certainly, the shoe last may also be inserted into the waterproof shoe upper110in the step 2. Since the connecting member can limit the periphery of the bottom portion of the waterproof shoe upper110from extending outwardly, and mutual matching between the connecting member and the shoe last can keep the waterproof shoe upper110in a certain shape, thus ensuring that the sealing layer200can be smoothly injection-molded.

In the step 2, the upper mold420is rotated to the loading and unloading station first, the two clamping modules421are rotated to open, then the bottom portion of the waterproof shoe upper110is upwardly placed between the two clamping modules421and the shoe last is abutted against the positioning plate422, and then the two clamping modules421are relatively rotated to close and clamp the bottom portion of the waterproof shoe upper110. At the moment, the bottom portion of the waterproof shoe upper110is clamped in the clamping hole423, then the upper mold420is rotated to be located above the bottom mole410and attached to the bottom mold410, and finally, the injection device injects the liquid glue material into the molding groove411.

With reference toFIG.8toFIG.10, a first locking apparatus430is arranged between the upper mold420and the bottom mold410, and when the upper mold420is located on an upper side of the bottom mold410, the first locking apparatus430locks the upper mold420to the bottom mold410. A second locking apparatus440is arranged between the two clamping modules421, and the second locking apparatus440is used to make the two clamping modules421clamp the bottom portion of the waterproof shoe upper110. By the above arrangement, the upper mold420can be locked to the bottom mold410and the two clamping modules421can clamp the bottom portion of the waterproof shoe upper110, thus ensuring smooth molding of the sealing layer200.

With reference toFIG.8toFIG.10, specifically, the first locking apparatus430comprises a first lock catch431and a first shaft lever432. The first lock catch431is arc-shaped, the first lock catch431is fixed on the corresponding clamping module421, and the first shaft lever432is rotatably mounted on the bottom mold410. A middle portion of the first shaft lever432is semicircular, and one end of the first shaft lever432is provided with a first operating handle433along a radial direction. By rotating the first shaft lever432through the first operating handle433, the middle portion of the first shaft lever432can be rotated to enter the first lock catch431and clamp with the first lock catch431, thus locking the upper mold420to the bottom mold410. By rotating the first shaft lever432through the first operating handle433, the middle portion of the first shaft lever432can be separated from the first lock catch431, thus unlocking the upper mold420. The first shaft lever432is rotated through the first operating handle433, which is convenient to operate and more labor-saving.

With reference toFIG.8toFIG.10, specifically, the second locking apparatus440comprises a second lock catch441and a second shaft lever442. The second lock catch441is arc-shaped, the second lock catch441is fixed on one of the clamping modules421, and the second shaft lever442is rotatably mounted on the other one of the clamping modules421. A middle portion of the second shaft lever442is semicircular, and one end of the second shaft lever442is provided with a second operating handle443along a radial direction. By rotating the second shaft lever442through the second operating handle443, the middle portion of the second shaft lever442can be rotated to enter the second lock catch441and clamp with the second lock catch441, thus making the two clamping modules421clamp the bottom portion of the waterproof shoe upper110. By rotating the second shaft lever442through the second operating handle443, the second shaft lever442can be rotated to be separated from the second lock catch441, so that the two clamping modules421can be relatively rotated to open. The second shaft lever442is rotated through the second operating handle443, which is convenient to operate and more labor-saving.

Various technical features of the above embodiments may be combined arbitrarily, and in order to simplify the description, possible combinations of various technical features in the above embodiments are not all described. However, as long as the combinations of these technical features have no contradiction, the combinations of these technical features should be considered as falling into the scope recorded by the specification.

The embodiments of the disclosure are described in detail with reference to the drawings above, but the disclosure is not limited to the above embodiments, and various changes may also be made within the knowledge scope of those of ordinary skills in the art without departing from the purpose of the disclosure.