Shell rotary cutting device

Abstract

A shell rotary cutting device comprises an upper male die and a lower female die, and the upper male die is driven to be combined with the lower female die. The upper male die comprises an upper cutting edge; the lower female die is provided with four sliding pieces, and abutting pieces are arranged corresponding to the sliding pieces. A lower blade is fixed on each sliding piece; each sliding piece is provided with at least two first cam parts, and each abutting piece is provided with at least two second cam parts. During cutting, the sliding piece and the abutting piece relatively move in the vertical direction, the first cam parts are guided by the inclined faces of the second cam parts to horizontally move inwards towards the shell, and through cooperation of the at least two first cam parts and the second cam parts, mutual compensation or cooperation can be achieved in the stroke that the lower cutting edge continuously moves downwards; the stability and reliability of the sliding part during horizontal displacement are guaranteed, the defect of single guiding is overcome, the other three non-cutting faces can be avoided according to the time sequence, then the rotary cutting effect on the battery shell is improved, and the edge cutting efficiency is improved. The four faces can be cut in sequence in the whole stroke that the lower die moves downwards as a whole.

Description

Technical Field

[0001] The utility model relates to the technical field of metal semi-finished product processing equipment, in particular to a shell peeling module, which can be used for peeling and trimming burrs on the mouth of a metal shell (especially a square one). Background Art

[0002] The shell is generally a cylindrical object with an open end, and common examples include metal cans and battery cases. For example, a square battery case typically includes a shell body. After the shell body is stretched and formed, it needs to be trimmed along its height to ensure uniform height or to remove burrs at the mouth of the square battery case. This requires the use of a rotary cutting module. In other work needs, the mouth of a round or other shaped battery case also needs to be trimmed.

[0003] Most existing rotary cutting modules utilize a single guide rail, which drives the cutter for both horizontal radial and vertical axial motion. This method relies entirely on spring force to maintain the rail's horizontal stability during the cutting process. If the spring force is reduced, the cutter's horizontal stability may be compromised, potentially leading to burrs on the can opening and even damage to the can.

[0004] Therefore, how to solve the above-mentioned deficiencies in the prior art has become the subject to be studied and solved in this utility model. Utility Model Content

[0005] The purpose of the utility model is to provide a shell peeling device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] 14. The rotary cutting device of claim 13, wherein the upper punch and the lower die are driven to engage with the lower die; the upper punch includes an upper blade, the cutting edge of which is arranged corresponding to the inner side of a cutting area of ​​the shell; the lower die is provided with four sliding members in front, back, left and right, and abutments are provided corresponding to each of the sliding members, and each of the sliding members slides on the corresponding abutments in the vertical direction and moves horizontally under the guidance of the abutments; each of the sliding members is fixedly connected to a lower blade, and when cutting, its cutting edge cooperates with the cutting edge of the upper blade to cut off the cutting area; the sliding members and the corresponding abutments are relatively floatingly arranged, each of the sliding members is provided with at least two first cam portions arranged at intervals in the vertical direction, and each of the abutments is provided with at least two second cam portions; wherein the second cam portion has an inclined surface for guiding the first cam portion to move horizontally inward; when cutting, the sliding member and the abutment member make relative movement in the vertical direction, and at the same time, the first cam portion is guided inward toward the shell by the inclined surface of the second cam portion.

[0008] According to a further technical solution, the upper punch further comprises a support body, the shell is sleeved on the support body, and the upper blade is positioned and connected to the upper end of the support body.

[0009] A further technical solution is that the sliding parts are divided into a group of two first sliding parts arranged in pairs along the left and right directions and a group of two second sliding parts arranged in pairs along the front and back directions, and each of the sliding parts has the same movement trend; the abutting parts are divided into a group of two first abutting parts arranged in pairs along the left and right directions and a group of two second abutting parts arranged in pairs along the front and back directions; each of the sliding parts encloses a positioning cavity for positioning the shell during rotary cutting; in the mold closing state, the two first sliding parts are located on the left and right opposite sides of the positioning cavity, and are driven to slide with the corresponding first abutting parts, and are displaced left and right under the abutting effect of the first abutting parts; the two second sliding parts are located on the front and back opposite sides of the shell, and are driven to slide with the corresponding second abutting parts, and are displaced front and back under the abutting effect of the second abutting parts.

[0010] According to a further technical solution, the second cam portion includes an inner concave surface and an outer convex surface, and among the two abutting members belonging to the same group, the inner concave surface of one abutting member horizontally corresponds to the outer convex surface of the other abutting member.

[0011] A further technical solution is that the upper punch is driven away from the lower die to achieve the open mold state of the rotary cutting device; it also includes a first drive part and a second drive part; each of the sliding parts encloses a positioning cavity for positioning the shell during rotary cutting; in the open mold state, the first drive part acts on the shell located in the positioning cavity, and the shell moves upward to protrude from the positioning cavity under the drive of the first drive part; in the closed mold state, the second drive part acts on each of the sliding parts, and the sliding parts are driven by the second drive part to drive the upper punch to move upward together.

[0012] According to a further technical solution, the first driving part includes a first driving structure and a first top block, the first top block is located at the bottom end of the positioning cavity, and supports the shell located in the positioning cavity in the mold closing state; the first top block abuts against the first driving structure and moves upward under the drive of the first driving structure.

[0013] According to a further technical solution, the second driving part includes a bracket, multiple springs and four second top blocks, the multiple springs are arranged along the periphery of the bracket, each sliding member is respectively against one end of the four second top blocks, and each spring acts on the other end of each second top block.

[0014] According to a further technical solution, a hollow area is provided in the middle of the bracket, and the first driving structure is located in the hollow area and acts upward on the first top block through the hollow area.

[0015] According to a further technical solution, the upper punch further comprises a limiting rod, and a positioning plate is fixedly connected above each of the lower blades. In the mold closing state, the limiting rod abuts against the positioning plate.

[0016] The terms used herein are for describing specific embodiments only and are not intended to be limiting of the present invention. Singular forms such as "a," "the," "this," "this," and "the" as used herein also include plural forms.

[0017] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit this case. They are only used to distinguish components or operations described with the same technical terms.

[0018] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct or indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0019] The terms “include”, “including”, “have”, etc. used in this document are open-ended terms, meaning including but not limited to.

[0020] Unless otherwise noted, the terms used herein generally have their ordinary meanings in the art, in the context of this application, and in the specific context. Certain terms used to describe this application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this application.

[0021] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0022] Compared with the prior art, the working principle and advantages of this utility model are as follows:

[0023] During rotary cutting, the upper punch and the lower die are in a clamping state. At this time, the cutting edge of the upper blade and the cutting edge of the lower blade cooperate and correspond to the cutting area of ​​the shell. Sliders and abutments cooperating with the sliders are provided on all four sides of the shell. The sliders are provided with at least two first cam portions arranged at intervals in the vertical direction, and the abutments are provided with at least two second cam portions. After being driven, the slides and the corresponding abutments produce relative movement in the vertical direction. The first cam portion is guided by the inclined surface of the second cam portion to produce horizontal displacement, thereby driving the lower blade to produce horizontal displacement and cooperate with the upper blade to cut the cutting area. Since each slide has at least two cam portions cooperating with the second cam portion, the stability and reliability of the slide when it undergoes horizontal displacement can be guaranteed, thereby improving the rotary cutting effect of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attachment Figure 1 It is a front cross-sectional view of an embodiment of the present utility model;

[0025] Attachment Figure 2 A side sectional view of an embodiment of the present utility model;

[0026] Attachment Figure 3 For attachment Figure 1 A partial schematic diagram A1 of the sliding member and the abutting member at position A in the first mating state (the sliding member is mated with the vertical plane);

[0027] Attachment Figure 4 For attachment Figure 1 A partial schematic diagram A2 of the sliding member and the abutting member at position A in the second mating state (the sliding member and the inclined surface are mated);

[0028] Attachment Figure 5 This is a schematic diagram of the upper punch structure of an embodiment of the utility model;

[0029] Attachment Figure 6 This is a schematic structural diagram of a housing according to an embodiment of the present utility model;

[0030] Attachment Figure 7 For attachment Figure 1 Partial schematic diagram B in.

[0031] In the above attached figures:

[0032] 1-upper punch; 2-lower die; 3-square battery case; 4-first drive unit; 5-second drive unit; 6-gap;

[0033] 11-upper blade; 12-support body; 13-limiting rod;

[0034] 21-sliding member; 22-abutting member; 23-lower blade; 24-positioning cavity;

[0035] 211 - first cam portion; 212 - first sliding member; 213 - second sliding member;

[0036] 221 - first abutment member; 222 - second abutment member; 223 - inner concave surface; 224 - outer convex surface; 225 - second cam portion; 226 - inclined surface;

[0037] 31- cutting area;

[0038] 41-first driving structure; 42-first top block;

[0039] 51- bracket; 52- spring; 53- second top block. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0041] Embodiment: The present invention will be clearly illustrated below with drawings and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0042] See attached Figures 1 and 2 As shown, this embodiment provides a shell rotary cutting device, including an upper punch 1 and a lower die 2. The upper punch 1 is driven close to the lower die 2 and cooperates with the lower die 2 to achieve a mold closing state of the shell rotary cutting device; corresponding to the mold closing state is also a mold opening state, and the mold opening state refers to the upper punch 1 being driven away from the lower die 2, that is, the preparation stage before shell trimming, or the completion stage after shell trimming.

[0043] This embodiment mainly describes the working process of peeling the mouth of the shell when the shell peeling device is in the mold closing state. For the convenience of description, the following embodiment will take the peeling and trimming of the square battery shell 3 as an example to further introduce the working process and working principle of this device.

[0044] See Figure 5 The upper punch 1 includes an upper blade 11 and a support 12. The square battery shell 3 is sleeved on the support 12. The square battery shell 3 is supported and positioned by the support 12. The upper blade 11 is positioned and connected to the upper end of the support 12. Figure 6 In this embodiment, the rectangular opening of the square battery shell 3 that needs to be cut is the cutting area 31. The square battery shell 3 is sleeved on the support body 12 so that the cutting edges of the four upper blades 11 correspond to the four inner walls of the cutting area 31.

[0045] Generally, the cutting area 31 is located at the mouth of the square battery shell 3 , and after cutting, the cutting area 31 is separated from the square battery shell 3 to form a material strip.

[0046] It can be understood that, in the mold closing state, a gap 6 is left between the upper punch 1 and the lower die 2 to accommodate the thickness of the square battery shell 3 itself.

[0047] like Figure 3 、 Figure 4 As shown, the lower die 2 is provided with four sliding members 21, front, back, left, and right, and each sliding member 21 is provided with a corresponding abutment member 22. Each sliding member 21 slides vertically with the corresponding abutment member 22 and moves horizontally under the guidance of the abutment member 22. The four sliding members 21 can be a single unit or composed of four separate units, but this is not a limitation.

[0048] Each sliding member 21 is fixedly connected to a lower blade 23. The cutting edge of the lower blade 23 is arranged below and outside the cutting area 31 of the square battery shell 3. During cutting, the cutting edge of the lower blade 23 cooperates with the cutting edge of the upper blade 11 to cut the cutting area 31 of the square battery shell 3. Specifically, the four lower blades 23 can be a single blade in the shape of a U-shaped blade.

[0049] Specifically, during cutting, the cutting edge of the upper blade 11 and the cutting edge of the lower blade 23 correspond to the inner and outer sides of the cutting area 31 respectively. To put it another way, the cutting edge of the upper blade 11 and the cutting edge of the lower blade 23 always maintain a relatively fixed position during cutting. For example, if the square battery shell 3 moves upward, the upper blade 11 and the lower blade 23 will move upward together with the square battery shell 3. In this way, the accuracy and reliability of cutting can be guaranteed.

[0050] For further information, see Figure 3 and Figure 4 The sliding member 21 and the corresponding abutting member 22 are arranged in a relatively floating manner. Each sliding member 21 is provided with at least two first cam portions 211 spaced apart in the vertical direction, and each abutting member 22 is provided with at least two second cam portions 225. The second cam portion 225 has an inclined surface 226 for guiding the first cam portion 211 to move horizontally inward. During cutting, the sliding member 21 and the abutting member 22 move relative to each other in the vertical direction. The first cam portion 211 of the sliding member 21 is guided inward toward the square battery shell 3 by the inclined surface 226 of the second cam portion 225, thereby driving the lower blade 23 to move horizontally inward and cooperate with the upper blade 11 to cut the cutting area 31. Since each sliding member 21 has at least two pairs of first cam portions 211 and second cam portions 225, the stability of the sliding member 21 during horizontal displacement can be ensured, thereby avoiding the tilt of the blade edge during the cutting process, ensuring the stability and reliability of the cutting, and making the cutting effect more precise.

[0051] In this embodiment, the peeling process includes the following implementation methods:

[0052] During peeling, a lower blade 23 cooperates with the corresponding upper blade 11 to cut the cutting area 31, that is, to cut one horizontal cutting area 31 at a time. For example, the lower blade 23 first moves horizontally forward, then horizontally backward, then horizontally left, and finally horizontally right, thereby sequentially cutting the cutting area 31 in the four directions of front, back, left, and right.

[0053] It can be understood that the shell to be cut can be a square battery shell 3. In other embodiments (not shown in the figures), circular or other shaped shells can also be cut. When cutting shells of other shapes, the difference lies in the horizontal displacement stroke of the lower blade 23. Obviously, when cutting a cylindrical shell, the horizontal displacement stroke of the lower blade 23 is longer each time. This can be achieved by extending the length of the inclined surface 226 so that through the above-mentioned horizontal cutting, the circular cutting of the cylindrical shell can be finally achieved.

[0054] Please combine Figure 1~Figure 2 The sliding members 21 are divided into a group of two first sliding members 212 arranged in pairs along the left and right directions and a group of two second sliding members 213 arranged in pairs along the front and back directions. In the mold closing state, each sliding member 21 has the same movement trend. The inner side of each sliding member 21 encloses a positioning cavity 24 for positioning the square battery shell 3 during peeling (see Figure 7 The abutting members 22 are divided into a group of two first abutting members 221 arranged in pairs along the left-right direction and a group of two second abutting members 222 arranged in pairs along the front-back direction.

[0055] In the mold closing state, the two first sliding members 212 are located on the left and right opposite sides of the positioning cavity 24, and are driven to slide with the corresponding first abutment members 221, and are displaced left and right under the guidance of the first abutment members 221; the two second sliding members 213 are located on the front and back opposite sides of the square battery shell 3, and are driven to slide with the corresponding second abutment members 222, and are displaced front and back under the guidance of the second abutment members 222.

[0056] In other embodiments, the abutting members 22 (the first abutting member 221 and the second abutting member 222 ) may be driven to move and move relative to the corresponding sliding members 21 (the first sliding member 212 and the second sliding member 213 ) in the vertical direction.

[0057] See Figure 7The second cam portion 225 also has an inner concave surface 223 and an outer convex surface 224, and belongs to the same group of paired abutting members 22. The inner concave surface 223 of one abutting member 22 horizontally corresponds to the outer convex surface 224 of the other abutting member 22. When a sliding member 21 undergoes horizontal displacement, the sliding member 21 must cooperate with the inner concave surface 223 or the outer convex surface 224 of the corresponding abutting member 22. For example, when a sliding member 21 cooperates with the outer convex surface 224 of the abutting member 22, the current sliding member 21 drives the lower blade 23 to move horizontally inward to cut the cutting area 31. In order to avoid interference with the movement of the other sliding member 21 opposite to the current sliding member 21, the other sliding member 21 needs to drive the corresponding lower blade 23 to move horizontally outward to ensure that the current sliding member 21 can smoothly achieve horizontal displacement.

[0058] It can be understood that the above “inward” and “outward” are both based on the center of the positioning cavity 24 as a reference.

[0059] To ensure the cutting effect, in this embodiment, the support body 12 is designed to be slidable relative to the upper blade 11. In this way, when the lower blade 23 moves to contact the upper blade 11, it can avoid interference from the support body 12 connected to the upper blade 11.

[0060] Considering that when the upper blade 11 and the lower blade 23 complete cutting, the cutting edges of the two blades need to have a relatively accurate relative position, that is, to ensure the relative position of the two blades in the vertical direction. In this embodiment, the upper punch 1 also includes a limiting rod 13, and a positioning plate is fixedly connected above each lower blade 23. In the mold closing state, the limiting rod 13 abuts against the positioning plate. Under the action of the limiting rod 13, the relative distance between the two blades in the vertical direction can be guaranteed. Even if the lower blade 23 moves in the vertical direction under the action of the sliding member 21 and the abutting member 22, the upper blade 11 will follow the movement of the lower blade 23 in the vertical direction, and will not affect the subsequent cutting process.

[0061] like Figure 1 As shown, after the square battery shell 3 is cut, the square battery shell 3 needs to be ejected from the lower die 2. In this embodiment, a first driving part 4 is also included. In the mold open state, the first driving part 4 acts on the square battery shell 3 located in the positioning cavity 24. The square battery shell 3 is driven by the first driving part 4 to move upward until it protrudes from the positioning cavity 24.

[0062] For details, please see Figure 2The first driving unit 4 includes a first driving structure 41 and a first top block 42. The first top block 42 is located at the bottom end of the positioning cavity 24 and, in the mold-closed state, supports the square battery can 3 located in the positioning cavity 24. The first top block 42 abuts against the first driving structure 41 and is driven upward by the first driving structure 41. In this way, after the spring 52 is compressed and drives the first top block 42 upward, it can drive the trimmed square battery can 3 upward until it protrudes from the top of the sliding cavity, ready for subsequent equipment to remove the square battery can 3.

[0063] Optionally, the first driving structure 41 is a cylinder.

[0064] like Figure 1 As shown, in this embodiment, a second driving part 5 is further included. In the mold closing state, the second driving part 5 acts on each sliding member 21, and the sliding member 21 is driven by the second driving part 5 to drive the upper punch 1 to move upward together; the second driving part 5 includes a bracket 51, a plurality of springs 52 and four second top blocks 53, and the plurality of springs 52 are arranged along the periphery of the bracket 51. The sliding member 21 is respectively against one end of the four second top blocks 53, and each spring 52 acts on the other end of each second top block 53.

[0065] In this embodiment, the middle portion of the bracket 51 has a hollow area, and the first driving structure 41 acts upward on the first top block 42 through the hollow area.

[0066] The working process of the utility model is now described as follows:

[0067] The upper punch 1 is driven close to the lower die 2 and cooperates with the lower die 2 to achieve the mold closing state of the shell peeling device;

[0068] The upper punch 1 includes an upper blade 11 and a support body 12, the square battery shell 3 is sleeved on the outside of the support body 12, and the upper blade 11 is positioned and connected to the upper end of the support body 12; the lower die 2 is provided with four integrated front, back, left and right sliding members 21, and each sliding member 21 is provided with a supporting member 22, and each sliding member 21 can slide on the inner side surface of the corresponding supporting member 22 in the vertical direction, and can produce relative horizontal movement on the corresponding side surface of the battery shell through the cam guiding action of the inner side surface of the supporting member 22. Each sliding member 21 is fixedly connected to a lower blade 23. When cutting, its cutting edge cooperates with the cutting edge of the upper blade 11 inside and outside to cut off the cutting area 31. Each sliding member 21 is provided with at least two first cam portions 211 arranged at intervals in the vertical direction, and each supporting member 22 is provided with at least two second cam portions 225.

[0069] During cutting, the outer side surface of each sliding member 21 and the inner side surface of the corresponding abutting member 22 move relative to each other in the vertical direction. Under the action of the travel of the first cam portion 211 along the guide surface 226 of the second cam portion 225, the first cam portion 211 moves horizontally inwardly toward the battery shell to be cut (in fact, the first cam portion 211 moves in both vertical and horizontal directions, but in this case, since the battery shell moves synchronously with the outer knife, i.e., the lower blade 23, in the vertical direction, it is ultimately reflected as a relative horizontal movement), thereby driving the lower blade 23 to undergo horizontal displacement and align with the battery shell. The upper blade 11 cooperates to cut the cutting area 31. Since the outer side surface of each sliding part 21 has at least two first cam parts 211 and the second cam parts 225, they can not only compensate or cooperate with each other during the continuous downward movement of the lower blade 23, ensuring the stability and reliability of the sliding part 21 when it undergoes horizontal displacement, solving the shortcomings of a single guide, but also avoid the remaining three non-cutting surfaces in a timely manner, thereby improving the rotary cutting effect of the square battery shell 3 and improving the trimming efficiency; the cutting of the four surfaces can be completed in a timely manner during the entire downward movement of the lower mold.

[0070] After the square battery shell 3 is cut, the first driving unit 4 ejects the square battery shell 3 from the positioning cavity 24 of the lower die 2 so that the square battery shell 3 can be removed by subsequent equipment.

[0071] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A shell peeling device, characterized in that: It comprises an upper punch (1) and a lower die (2), wherein the upper punch (1) is driven to engage with the lower die (2); The upper punch (1) includes an upper blade (11), the edge of which is arranged on the inner side of a cutting area (31) of the shell; The lower die (2) is provided with four sliding members (21) at the front, back, left and right sides, and each sliding member (21) is provided with a supporting member (22), and each sliding member (21) slides on the corresponding supporting member (22) in a vertical direction and moves horizontally under the guidance of the supporting member (22); Each of the sliding members (21) is fixedly connected to a lower blade (23), and during cutting, the blade edge cooperates with the blade edge of the upper blade (11) to cut off the cutting area (31) of the shell; The sliding member (21) and the corresponding abutting member (22) are relatively floatingly arranged, each sliding member (21) is provided with at least two first cam portions (211) spaced apart in a vertical direction, and each abutting member (22) is provided with at least two second cam portions (225); The second cam portion (225) has an inclined surface (226) for guiding the first cam portion (211) to move horizontally inward; during cutting, the sliding member (21) and the abutting member (22) move relative to each other in the vertical direction, and at the same time, the first cam portion (211) is guided by the inclined surface (226) of the second cam portion (225) to move horizontally inward toward the shell.

2. The shell peeling device according to claim 1, characterized in that: The upper punch (1) further comprises a support body (12), the shell is sleeved on the support body (12), and the upper blade (11) is positioned and connected to the upper end of the support body (12).

3. The shell peeling device according to claim 2, characterized in that: The sliding members (21) are divided into a group of two first sliding members (212) arranged in pairs along the left-right direction and a group of two second sliding members (213) arranged in pairs along the front-back direction, and each of the sliding members (21) has the same movement trend; The abutting members (22) are divided into a group of two first abutting members (221) arranged in pairs along the left-right direction and a group of two second abutting members (222) arranged in pairs along the front-back direction; Each of the sliding members (21) encloses a positioning cavity (24) for positioning the housing during peeling; In the mold closing state, the two first sliding members (212) are located on the left and right opposite sides of the positioning cavity (24), and are driven to slide with the corresponding first abutting members (221), and are displaced left and right under the abutting action of the first abutting members (221); the two second sliding members (213) are located on the front and back opposite sides of the shell, and are driven to slide with the corresponding second abutting members (222), and are displaced front and back under the abutting action of the second abutting members (222).

4. The shell peeling device according to claim 1, characterized in that: The second cam portion (225) includes an inner concave surface (223) and an outer convex surface (224), and of the two abutting members (22) belonging to the same group, the inner concave surface (223) of one abutting member (22) horizontally corresponds to the outer convex surface (224) of the other abutting member (22).

5. The shell peeling device according to claim 1, characterized in that: The upper punch (1) is driven away from the lower die (2) to achieve an open die state of the rotary cutting device; It also includes a first driving part (4) and a second driving part (5); Each of the sliding members (21) encloses a positioning cavity (24) for positioning the shell during peeling; in the mold opening state, the first driving portion (4) acts on the shell located in the positioning cavity (24), and the shell is driven by the first driving portion (4) to move upward until it protrudes from the positioning cavity (24); In the mold closing state, the second driving part (5) acts on each of the sliding members (21), and the sliding members (21) are driven by the second driving part (5) to drive the upper punch (1) to move upward together.

6. The shell peeling device according to claim 5, characterized in that: The first driving portion (4) comprises a first driving structure (41) and a first top block (42), wherein the first top block (42) is located at the bottom end of the positioning cavity (24) and supports the shell located in the positioning cavity (24) in the mold closing state; the first top block (42) abuts against the first driving structure (41) and moves upwards driven by the first driving structure (41).

7. The shell peeling device according to claim 5, characterized in that: The second driving part (5) includes a bracket (51), a plurality of springs (52) and four second top blocks (53). The plurality of springs (52) are arranged along the periphery of the bracket (51). Each of the sliding members (21) abuts against one end of each of the four second top blocks (53), and each of the springs (52) acts on the other end of each of the second top blocks (53).

8. The shell peeling device according to claim 6, characterized in that: The middle portion of the bracket (51) has a hollow area, and the first driving structure (41) is located in the hollow area and acts upward on the first top block (42) through the hollow area.

9. The shell peeling device according to claim 4, characterized in that: The upper punch (1) further comprises a limiting rod (13), and a positioning plate is fixedly connected above each lower blade (23). In the mold closing state, the limiting rod (13) abuts against the positioning plate.

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