Novel flat cutter die for new energy battery bottom supporting piece

By introducing the design of a positioning outer frame and a fixed steel plate into the new flat-knife die for the bottom support of new energy batteries, combined with a pneumatic system drive, the problems of edge curling and waste material jamming during the die punching process are solved, thereby improving the die life and punching quality.

CN223442427UActive Publication Date: 2025-10-17WUHAN GUANJIA NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202423007853.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-10-17
Estimated Expiration
2034-12-05

AI Technical Summary

Technical Problem

During the punching process of existing molds, the edges of the raw materials are prone to curling, resulting in poor punching effects, rough appearance, serious waste material jamming and residue, resulting in a short mold life and a high scrap rate.

Method used

A new type of flat knife mold for the bottom support of new energy batteries is used, including an upper mold, a lower mold and a support panel. By setting a positioning frame on the edge of the cutting hole and a fixed steel plate on the inside of the punching knife, combined with a pneumatic system drive, the raw material can be positioned, pressed and accurately cut to prevent edge curling and ensure smooth discharge of waste.

Benefits of technology

The punching quality has been significantly improved, and the die life has been increased from 200,000 times to 1.5 million times. The waste material, material jamming and residue have been reduced, the scrap rate has been reduced, and the smooth and precise punching appearance has been ensured.

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Abstract

The utility model provides a new energy battery cork base piece novel flat knife mould relates to the die cutting flat knife mould technical field, including upper mould, lower mould and raw material main part, the bottom surface of upper mould is equipped with the cutting groove, the interior of cutting groove is equipped with the drive plate, the bottom of drive plate is connected and equipped with the punching hole knife, the surface of lower mould is equipped with the blanking through hole, and the blanking through hole is equipped with the punching hole knife. A positioning outer frame is arranged on the edge of a blanking through hole in the bottom face of the lower die, a stamping cutter is arranged on the bottom face of the lower die, a fixing steel plate is arranged on the inner side of the stamping cutter, a supporting panel is arranged on the bottom face of the raw material body, and the positioning outer frame and the fixing steel plate limit the surface of the raw material body. The edge is prevented from curling during punching, so that the contact between the die and a raw material is more compact, the punching appearance is smooth, the waste material is not blocked, the residual phenomenon can be avoided, the waste can be discharged by 100%, the service life of the die is prolonged from 200,000 times to 1,500,000 times, the punching quality is obviously improved, and the rejection rate is reduced.
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Description

TECHNICAL FIELD

[0001] The utility model relates to die cutting flat cutter die technical field especially relates to a new energy battery bottom support piece novel flat cutter die. BACKGROUND

[0002] The flat cutter die cutting machine is also called flat pressing flat die cutting machine, and is the mainstream die cutting equipment in the market. The die cutting plate table and the bottom plate are parallel, and the two are horizontally placed. During work, the lower die cutting plate table is fixed, and the upper die cutting plate table reciprocates up and down through a crankshaft and a double-shaft connecting rod mechanism. Each reciprocating motion completes a die cutting. In the qualitative die, the deformation or fracture separation of the stress part of the printing carrier is caused by the applied pressure.

[0003] According to the utility model of a kind of flat cutter die cutting die of quick installation flat cutter of Chinese open number CN204398007U, including upper die and lower die, the surface of the upper die at least extends two flat cutter positioning columns towards lower die, the surface of the upper die at least extends three flat cutter locking screws towards lower die, the upper die is provided with punching punch and positioning pin, the lower die is provided with the corresponding receiving hole of punching punch and positioning pin, the lower die is provided with the exhaust groove of communication receiving hole.It has the advantages of quick, accurate installation flat cutter and convenient waste.

[0004] The above patent document and prior art have the problems that the traditional die cutting process is not tight enough when the previous die is cut, which affects the cutting effect, the edge of the raw material is prone to curling, the cutting appearance is not smooth, the waste is blocked and residual, which leads to short service life of the die and high scrap rate. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the defects of poor cutting edge quality and unsmooth cutting edge in the prior art, and provides a new energy battery bottom support piece novel flat cutter die.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme: a new energy battery bottom support piece novel flat cutter die, including upper die, lower die and raw material main body, the bottom surface of the upper die is provided with a cutting groove, the inside of the cutting groove is provided with a driving disc, the bottom of the driving disc is connected with a stamping hole cutter, the surface of the lower die is provided with a blanking through hole, the edge of the blanking through hole of the bottom surface of the lower die is provided with a positioning outer frame, the bottom surface of the lower die is provided with a stamping cutter, the inner side of the stamping cutter is provided with a fixed steel plate, the bottom of the lower die is provided with a raw material main body, and the bottom surface of the raw material main body is provided with a supporting panel.

[0007] Preferably, the upper die and the lower die are provided with buffer rubber pads, and the buffer rubber pads are fully overlapped with the bottom surface of the upper die.

[0008] Preferably, the upper die, the lower die and the support panel are provided with positioning pin holes at the four corners of the edges, and the vertical center lines of the positioning pin holes at the same positions on the surfaces of the upper die, the lower die and the support panel are overlapped with each other.

[0009] Preferably, the support panel is provided with a cutting through hole, and the cutting through hole has the same width as the cutting groove, and the cutting through hole has the same length as the driving disc.

[0010] Preferably, the lower die is provided with a pneumatic connecting nozzle, and the pneumatic connecting nozzle is connected with the driving disc of the upper die through a pipeline.

[0011] Preferably, the upper die, the lower die and the support panel have the same size in the top surface section, and the outer adjacent sides of the upper die, the lower die and the support panel are all treated with round corners.

[0012] Preferably, the stamping knife has the same size as the edge of the driving disc, the cutting groove is a blind groove, and the two ends of the cutting groove are penetrated through the two sides of the upper die.

[0013] Beneficial effects

[0014] In the utility model, the upper die, the lower die and the support panel are used for die cutting treatment of the raw material body, the positioning outer frame is arranged at the edge of the cutting through hole, the fixed steel plate is arranged in the inner side of the stamping knife for limiting the surface of the raw material body during stamping and cutting, the edge of the stamping position is effectively positioned through the mode of positioning and pressing first and then stamping and cutting, the edge is prevented from curling during punching, the die punching and cutting is more compact in contact with the raw material, the punching appearance is smooth, the waste material is not clamped, the residual phenomenon can be 100% discharged, the die life is increased from 200,000 times to 1,500,000 times, the punching quality is significantly improved, and the scrap rate is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 It is a split structure view of the utility model;

[0018] Figure 4 It is a structure view of the upper die of the utility model;

[0019] Figure 5 It is a structure view of the lower die of the utility model;

[0020] Figure 6 is a lower mold perspective view of the utility model;

[0021] Figure 7 is a support panel surface structure view of the utility model;

[0022] Figure 8 is an internal partial structure view of the mold of the utility model.

[0023] Legend:

[0024] 1, upper mold; 2, driving disc; 3, pneumatic connecting mouth; 4, cutting groove; 5, cushion knife foam; 6, buffer rubber pad; 7, lower mold; 8, blanking through hole; 9, stamping knife; 10, fixed steel plate; 11, support panel; 12, cutting through hole; 13, positioning outer frame; 14, raw material main body; 15, positioning pin hole; 16, stamping hole knife. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the following further describes the utility model by combining with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] The specific embodiments of the utility model are described below by combining with the drawings. Embodiment one:

[0028] Reference Figures 1-8The utility model provides a new energy battery bottom support piece new flat cutter die, including upper die 1, lower die 7 and raw material main body 14, upper die 1 bottom surface is seted with cutting groove 4, cutting groove 4 inside is equipped with driving disc 2, driving disc 2 bottom is connected with punch hole cutter 16, lower die 7 surface is seted with blanking through -hole 8, and the edge of blanking through -hole 8 of lower die 7 bottom surface is equipped with positioning outer frame 13, and lower die 7 bottom surface is equipped with punch cutter 9, and punch cutter 9 inside is equipped with fixed steel plate 10, and lower die 7 bottom is equipped with raw material main body 14, and raw material main body 14 bottom surface is equipped with support panel 11, and upper die 1, lower die 7 and support panel 11 jointly constitute the main body structure of die cutting, are used for processing raw material main body 14, and cutting groove 4 is used to accommodate driving disc 2 and punch hole cutter 16, driving disc 2 drives punch hole cutter 16 to move and realizes punching, and the blanking through -hole 8 of lower die 7 is used for waste discharge, and positioning outer frame 13 and fixed steel plate 10 are used to limit raw material main body 14 when punching, and upper die 1 cooperates with lower die 7, driving disc 2 drives punch hole cutter 16 to move in cutting groove 4, and raw material main body 14 on lower die 7 is punched, and waste is discharged through blanking through -hole 8, and starting die, and upper die 1 is pressed down, and driving disc 2 drives punch hole cutter 16 to punch raw material main body 14, and positioning outer frame 13 and fixed steel plate 10 ensure that the position of raw material is accurate and stable when punching, and the waste after punching leaves die through blanking through -hole 8, realizes the effective die cutting of raw material main body 14, improves the punching quality through positioning and limiting, reduces the edge curling when punching, makes the appearance of punching smooth, and the waste is discharged smoothly without jamming, residual phenomenon, greatly improves the die life, from 200,000 times to 1.5 million times, reduces the scrap rate.

[0029] In order to prevent the die from being damaged when punching, the surface of the upper die 1 and the lower die 7 is provided with a buffer rubber pad 6, and the size of the buffer rubber pad 6 is completely coincident with the bottom surface of the upper die 1, and the bottom surface of the driving disc 2 is provided with a knife foam pad 5, and the size of the knife foam pad 5 is the same as that of the driving disc 2, the buffer rubber pad 6 is used to buffer the impact force when the upper die 1 and the lower die 7 are closed, and the knife foam pad 5 is used to buffer the reaction force of the punch hole cutter 16 when punching, so as to protect the die and the cutter, when the die is closed or punched, the buffer rubber pad 6 and the knife foam pad 5 are pressed respectively, and the energy is absorbed through the elastic deformation of themselves, the buffer rubber pad 6 plays a role in the closing process, and the knife foam pad 5 moves with the punch hole cutter 16 and plays a buffering role when punching, so as to prolong the service life of the die and the cutter, and reduce the damage of the die and the cutter caused by impact,

[0030] In order to ensure the stamping precision, the upper die 1, the lower die 7 and the edge four corner positions of the support panel 11 are provided with positioning pin holes 15, and the vertical center lines of the positioning pin holes 15 at the same positions on the surfaces of the upper die 1, the lower die 7 and the support panel 11 coincide with each other, for ensuring the position precision of the upper die 1, the lower die 7 and the support panel 11 during assembly and working process, so that they can be accurately matched, the upper die 1, the lower die 7 and the support panel 11 are fixed in the correct relative positions by inserting the positioning pins into the positioning pin holes 15, the positioning pins are inserted into the positioning pin holes 15 during die assembly, so that each component is accurately positioned, the position is kept stable during working process, the accurate matching of each part of the die is ensured, the die cutting precision is improved, and the die cutting quality is improved.

[0031] The support panel 11 is provided with a cutting through hole 12, and the width of the cutting through hole 12 is the same as that of the cutting groove 4, and the length of the cutting through hole 12 is the same as that of the driving disc 2, so as to provide a space for the punching action of the punching hole cutter 16 and ensure the smooth progress of the punching process. The punching hole cutter 16 punches the raw material body 14 through the cutting groove 4 and the cutting through hole 12. When the driving disc 2 drives the punching hole cutter 16 to move, the cutting through hole 12 provides a suitable punching path for the punching hole cutter 16, ensures the smoothness of the punching action, and helps to improve the punching quality and efficiency.

[0032] The lower die 7 is provided with a pneumatic connecting nozzle 3, which is connected with the driving disc 2 of the upper die 1 through a pipeline, provides power for the movement of the driving disc 2, so that it can drive the punching hole cutter 16 to punch, and through the pneumatic system, gas enters the driving disc 2 through the pneumatic connecting nozzle 3 and the pipeline, drives the driving disc 2 to move. After the pneumatic system is started, the gas drives the driving disc 2, and then drives the punching hole cutter 16 to complete the punching action, provides a stable and reliable power source for the die, and ensures the effective progress of the punching action.

[0033] Other limiting structures of the whole device are that the top surface cross sections of the upper die 1, the lower die 7 and the support panel 11 are the same, and the outer adjacent sides of the upper die 1, the lower die 7 and the support panel 11 are treated with round corners.

[0034] The appearance consistency and safety of the whole mold are ensured, the round corner processing can prevent the operator from being injured, the same top section and round corner processing are designed to make the mold meet the requirements in use and appearance, the external shape characteristics of the mold play a corresponding role during installation and use, the safety and overall aesthetics of the mold are improved, the use and management of the mold are facilitated, the profile of the punching knife 9 is the same size as the edge of the driving disc 2, the cutting groove 4 is a blind groove, and the two ends of the cutting groove 4 are penetrated through the two sides of the upper mold 1, the punching knife 9 cooperates with the driving disc 2 to realize accurate punching, the design of the cutting groove 4 ensures the movement path of the punching hole knife 16 and the placement of the raw material, the driving disc 2 drives the punching hole knife 16 to move in the cutting groove 4 to punch the raw material, the size of the punching knife 9 matches the driving disc 2 to ensure the accuracy of the punching range, and the structural characteristics of the punching knife 9 and the cutting groove 4 work together during the punching process to improve the accuracy and stability of the punching and ensure the punching quality. Specific embodiment two:

[0036] Reference Figures 1-8 According to the contents in the above specific embodiments, the following contents are further disclosed.

[0037] The following is the detailed working process of the mold punching the raw material:

[0038] Preparation stage

[0039] Mold assembly and raw material placement: the positioning pin is inserted into the positioning pin hole 15 at the edge of the upper mold 1 and the lower mold 7 to accurately assemble and fix the two components, ensure the relative position of the two components during the working process is accurate, place the raw material body 14 on the lower mold 7, and the bottom surface of the raw material body 14 is supported by the support panel 11.

[0040] Punching stage

[0041] Edge cutting:

[0042] Start the pneumatic system, the gas enters the driving disc 2 in the cutting groove 4 of the upper mold 1 through the pneumatic connection nozzle 3 and the pipeline on the side of the lower mold 7, the pneumatic connection seat is used to drive the driving disc 2 to move alone and directly drive the whole structure connected with the lower mold 7 to move synchronously, the flow direction of the gas is controlled through the three-way pipeline to control the pneumatic movement, under the action of the gas pressure, the upper and lower molds 7 move synchronously, and the punching knife 9 connected at the bottom of the lower mold 7 cuts the edge of the raw material body 14. In this process, the positioning frame 13 at the edge of the blanking hole 8 on the bottom surface of the lower mold 7 limits the edge of the raw material body 14 to prevent the raw material from shifting during punching, and ensures that the punching knife 9 can accurately cut the edge of the raw material. At the same time, the fixed steel plate 10 on the inner side of the punching knife 9 on the lower mold 7 also plays a certain limiting role for the raw material body 14, further ensuring the accuracy of the punching position.

[0043] The buffer rubber pad 6 on the abutting surface of the upper die 1 and the lower die 7 buffers the impact force generated by the downward pressing of the upper die 1 during die cutting, protecting the die. The pad foam 5 on the bottom surface of the driving disc 2 buffers the reaction force received by the punching knife 9 during die cutting, protecting the knife and the die.

[0044] Surface cutting: after the edge cutting is completed, the driving disc 2 moves, and the punching hole knife 16 connected to the bottom thereof cuts the surface of the raw material body 14. The cutting through hole 12 on the surface of the support panel 11 provides a suitable space for the punching action of the punching hole knife 16, and the width of the cutting through hole 12 is the same as the width of the cutting groove 4 of the upper die 1, and the length of the cutting through hole 12 is the same as the length of the driving disc 2, ensuring smooth movement of the punching hole knife 16 during punching.

[0045] During the entire punching process, the outer adjacent side of the upper die 1, the lower die 7 and the support panel 11 is rounded, ensuring the safety of operation, and at the same time, the top surface sections of them are the same size, ensuring the stability of the overall structure of the die and the accuracy of the punching. The waste generated by cutting is discharged through the material falling through hole 8 on the surface of the lower die 7. Due to the precise design of the die, the appearance of the cutting is smooth, and there is no jamming or residue of the waste, which can be 100% discharged. By this way of cutting the edge first and then cutting the surface, the raw material is effectively processed, the punching quality is improved, the scrap rate is reduced, and the service life of the die is significantly improved. Specific embodiment three:

[0047] Reference Figures 1-8 According to the contents in the above specific embodiments, the following contents are further disclosed:

[0048] In actual use, the connection structure and movement action between the pneumatic connection nozzle 3 and the driving disc 2 are as follows:

[0049] Connection structure

[0050] Pipeline connection: the pneumatic connection nozzle 3 is located on the side of the lower die 7 and is connected to the driving disc 2 in the upper die 1 through a specially designed pipeline. The pipeline is generally made of materials with certain flexibility and gas pressure resistance, such as rubber tube or plastic hose, so as to adapt to the slight movement and vibration of the die during work, while ensuring the sealing of gas transmission.

[0051] Sealing connection: reliable sealing measures are adopted at the connection between the pneumatic connection nozzle 3 and the pipeline, and at the connection between the pipeline and the driving disc 2, to prevent gas leakage. Common sealing methods include the use of sealing washers, sealing glue or special sealing joints, etc. For example, a quick connector with a sealing ring may be used at the connection between the pipeline and the driving disc 2. This connector can ensure firm connection while effectively preventing gas leakage from the connection, ensuring the normal work of the pneumatic system.

[0052] Fixing and Supporting: To ensure the stability of the pipe, prevent it from shaking or shifting during work, the pipe is usually fixed along the edge of the mold or a specific support structure. Some small clamps or slots may be set on the lower mold 7 to fix the pipe and keep it in a stable position, ensuring smooth transmission of gas from the pneumatic connection nozzle 3 to the driving disc 2.

[0053] Driving Content

[0054] Providing Power: The main function of the pneumatic connection nozzle 3 is to introduce compressed air generated by the external pneumatic system into the driving disc 2. When the pneumatic system is started, compressed air enters the pipe through the pneumatic connection nozzle 3 and finally reaches the driving disc 2. The compressed air forms a certain pressure in the driving disc 2, which drives the driving disc 2 to move. This pneumatic driving method can provide a large driving force for the driving disc 2, enabling it to drive the punch cutter 9 and the punch hole cutter 16 to perform efficient punching action.

[0055] Controlling the direction of movement: By controlling the direction of airflow in the pneumatic system, the direction of movement of the driving disc 2 can be accurately controlled. For example, when the driving disc 2 needs to move downward for punching, the pneumatic system will send compressed air in a specific direction into the driving disc 2, causing the driving disc 2 to move downward under the action of air pressure; when the punching is completed and the driving disc 2 needs to be reset, the pneumatic system will change the direction of airflow, causing the driving disc 2 to move upward to the initial position. This precise control of the direction of movement ensures the accuracy and reliability of the mold punching action.

[0056] Adjusting the speed of movement: The pneumatic system can also control the speed of movement of the driving disc 2 by adjusting the flow and pressure of compressed air. In different punching stages or for different raw material characteristics, the speed of movement of the driving disc 2 can be adjusted as needed. For example, when punching harder raw materials, the speed of movement of the driving disc 2 can be appropriately reduced to increase the punching force; when punching thinner or softer raw materials, the speed of movement of the driving disc 2 can be increased to improve the punching efficiency. In this way, it can better adapt to various punching needs and further improve the punching quality and production efficiency.

[0057] The connection structure between the pneumatic connection nozzle 3 and the driving disc 2 and the driving content design closely cooperate to realize efficient and accurate punching action of the mold, providing reliable power support and precise control for the entire die cutting process.

[0058] In summary:

[0059] The upper die 1, the lower die 7 and the support panel 11 are used to carry out die cutting treatment on the raw material body 14, the positioning outer frame 13 is arranged on the edge of the cutting through hole 12, the fixed steel plate 10 is arranged on the inner side of the punching cutter 9 to limit the surface of the raw material body 14 during punching and cutting, the raw material body 14 is positioned and pressed first and then punched and cut, the edge of the punching position is effectively positioned, the edge is prevented from curling during punching and cutting, the punching and cutting of the die is more compact in contact with the raw material, the appearance is smooth, the waste is not clamped, the residual phenomenon can be 100% discharged, the die life is increased from 200,000 times to 1,500,000 times, the punching quality is significantly improved, and the scrap rate is reduced.

[0060] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "on the surface" of the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0061] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A new type of flat knife mold for a new energy battery bottom support sheet, comprising an upper mold (1), a lower mold (7) and a raw material body (14), characterized in that: The upper mold (1) has a cutting groove (4) on its bottom surface, a driving disk (2) is provided inside the cutting groove (4), a punching hole knife (16) is connected to the bottom of the driving disk (2), a blanking hole (8) is provided on the surface of the lower mold (7), a positioning outer frame (13) is provided at the edge of the blanking hole (8) on the bottom surface of the lower mold (7), a punching knife (9) is provided on the bottom surface of the lower mold (7), a fixing steel plate (10) is provided on the inner side of the punching knife (9), a raw material body (14) is provided on the bottom of the lower mold (7), and a supporting panel (11) is provided on the bottom surface of the raw material body (14).

2. A new type flat knife mold for a new energy battery bottom support sheet according to claim 1, characterized in that: A cushioning rubber pad (6) is provided on the surface where the upper mold (1) and the lower mold (7) abut against each other, and the size of the cushioning rubber pad (6) completely overlaps with the bottom surface of the upper mold (1); a knife pad foam (5) is provided on the bottom surface of the driving disk (2), and the size of the knife pad foam (5) is the same as that of the driving disk (2).

3. A new type flat knife mold for the bottom support sheet of a new energy battery according to claim 1, characterized in that: Positioning pin holes (15) are provided at the four corners of the edges of the upper mold (1), the lower mold (7) and the supporting panel (11), and the vertical center lines of the positioning pin holes (15) at the same position on the surfaces of the upper mold (1), the lower mold (7) and the supporting panel (11) coincide with each other.

4. A new type flat knife mold for a new energy battery bottom support sheet according to claim 1, characterized in that: A cutting through hole (12) is provided on the surface of the support panel (11), and the width of the cutting through hole (12) is the same as the width of the cutting groove (4), and the length of the cutting through hole (12) is the same as the length of the driving disk (2).

5. The new flat knife mold for the bottom support sheet of a new energy battery according to claim 1, characterized in that: A pneumatic connection nozzle (3) is provided on the side of the lower mold (7), and the pneumatic connection nozzle (3) is connected to the driving disk (2) of the upper mold (1) through a pipeline.

6. The new flat knife mold for the bottom support sheet of a new energy battery according to claim 1, characterized in that: The cross-sectional sizes of the top surfaces of the upper mold (1), the lower mold (7) and the supporting panel (11) are all the same, and the outer adjacent side surfaces of the upper mold (1), the lower mold (7) and the supporting panel (11) are all rounded.

7. The new flat knife mold for the bottom support sheet of a new energy battery according to claim 1, characterized in that: The outline of the punching knife (9) is the same size as the edge of the driving disc (2); the cutting groove (4) is a blind groove, and both ends of the cutting groove (4) penetrate the two sides of the upper mold (1).

Citation Information

Patent Citations

  • Die cutting die facilitating rapid mounting of flatbed die

    CN204398007U