A high-efficiency and low-cost lithium battery insulating sheet blanking device

Abstract

The utility model belongs to lithium battery production and manufacturing technical field especially, it is a kind of high -efficient low -cost lithium battery insulating sheet blanking device, present and propose following scheme, it includes support frame assembly, support frame assembly includes: four locking nuts, motor mounting plate, four struts, four support seats and mould mounting plate;Four locking nuts all are through motor mounting plate, four locking nuts are respectively with the top end threaded connection of four struts, four struts are fixedly installed at the top of four support seats, four support seats are fixedly installed at the top of mould mounting plate;Insulating sheet material belt, the insulating sheet material belt is at the top drive module group of mould mounting plate, in the utility model: the insulating sheet of cylindrical battery does not cause the situation that insulating sheet does not fall off due to static cling in blanking process, simultaneously avoids the problem of card mould caused by not timely clean up blanking waste, to reduce mould repair frequency and procurement cost further.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery manufacturing technology, and in particular to a high-efficiency and low-cost lithium battery insulating sheet punching device. Background Technology

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. The lithium metal battery was first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M.S. Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become the mainstream. The current method for punching insulating sheets for lithium-ion cylindrical batteries typically involves using a punching die to cut the material strip into the designed shape, followed by vacuum suction from above and transfer. The following problems exist in the current production process: 1) A single punching die can only perform punching action, and it needs to be used with a set of vacuum nozzles to remove the punched insulating sheet, which increases the punching cost of raw materials; 2) The punched insulating sheets often have a small amount of static electricity. Therefore, when the vacuum nozzle is discharging the material, the static electricity often causes the sheets to stick together, making it impossible for the insulating sheets to fall off even after the vacuum is broken. 3) Existing punching methods all have the discharge port at the top, which is convenient for vacuum nozzles to pick up the material. However, the waste generated during punching will also appear at the top. If it cannot be discharged through the waste suction pipe in time, it will cause the mold to jam or even be scrapped. Therefore, this utility model proposes a high-efficiency and low-cost lithium battery insulating sheet punching device to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to solve the problems of existing technologies, namely: 1) a single punching die can only perform punching action and requires a set of vacuum nozzles to remove the punched insulating sheets, which increases the punching cost of raw materials; 2) the punched insulating sheets often have a small amount of static electricity, so when the vacuum nozzles discharge the material, the static electricity often causes sticking, which makes it impossible for the insulating sheets to fall off even after the vacuum is broken; 3) existing punching methods all have the discharge port at the top, which is convenient for the vacuum nozzles to pick up the material, but at the same time, the waste generated by punching will also appear at the top. If it cannot be discharged through the waste suction pipe in time, it will cause the die to jam or even be scrapped. Therefore, this utility model proposes a high-efficiency and low-cost lithium battery insulating sheet punching device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A high-efficiency, low-cost lithium battery insulating sheet punching device, comprising: A support frame assembly, comprising: four locking nuts, a motor mounting plate, four pillars, four support bases, and a mold mounting plate; All four locking nuts penetrate the motor mounting plate, and are threaded to the top of the four pillars respectively. The four pillars are fixedly installed on the top of the four support seats, and the four support seats are fixedly installed on the top of the mold mounting plate. Insulating sheet material strip, the insulating sheet material strip being positioned on top of the mold mounting plate; A drive module, which is mounted on a support frame assembly; An insulating sheet cutting module is mounted on a drive module and a support frame assembly.

[0005] As a preferred embodiment of this utility model, the drive module includes: a servo motor, a reducer, and a motor drive base; The servo motor is fixedly mounted on top of the reducer, which is mounted on top of the motor mounting plate. The reducer and the motor drive seat are matched.

[0006] As a preferred embodiment of this utility model, the insulating sheet cutting module includes: an upper template, a sealing ring, a lower template, a guide pin, four mold frame guide pillars and guide sleeves, a pressure plate, a stripper plate, a spring cover, a spring guide pillar, a perforated annular punch, a center hole punch, and a pressure plate guide pillar. The upper template is fixedly installed at the bottom of the motor drive seat. The sealing ring is installed at the bottom of the upper template. The mold frame guide post and guide sleeve are installed at the bottom of the upper template. The mold frame guide post and guide sleeve cooperate with the guide pin. The lower mold is installed at the bottom of the mold frame guide post and guide sleeve. The pressure plate is fixed at the bottom of the upper template. The spring guide post is fixed at the top of the unloading plate. The spring guide post is fixedly connected to the spring cover. The pressure plate guide post is fixed at the bottom of the pressure plate. The perforated annular punch and the center hole punch are both fixed on the pressure plate. The upper template side wall is provided with a connecting through hole and a connecting groove. The connecting through hole and the connecting groove are connected.

[0007] As a preferred embodiment of this utility model, both the upper template and the pressure plate are provided with mounting through holes, and the spring guide post passes through the mounting through holes.

[0008] As a preferred embodiment of this utility model, the bottom of the upper template is provided with an adaptation groove, and the top of the sealing ring slides in contact with the inner wall of the adaptation groove.

[0009] As a preferred embodiment of this utility model, a waste suction pipe is fixedly installed at the bottom of the mold mounting plate. Beneficial effects

[0010] When punching the insulating sheet of cylindrical batteries, the process of transferring the insulating sheet through a vacuum nozzle is eliminated, reducing punching and maintenance costs. When punching the insulating sheet of the cylindrical battery, a die is used to open the hole, which simultaneously has the functions of negative pressure to suck up the insulating sheet and positive pressure to blow nitrogen, ensuring that the insulating sheet is 100% sucked up and blown off. When punching the insulating sheet of cylindrical battery, the blanking is punched out from below the die, and the dust removal pipe below is used to avoid the waste material that is not cleaned properly from getting stuck in the die, thus reducing the number of rework and procurement costs. In this invention, the insulating sheet of the cylindrical battery will not stick due to static electricity during the punching process, thus avoiding the problem of mold jamming caused by the failure to remove punching waste in time, thereby reducing the frequency of mold repair and procurement costs. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 AA is a cross-sectional view of this utility model; Figure 4 This is a cross-sectional view of the drive assembly and support assembly of this utility model. Figure 5 This is a top view of the insulating sheet cutting module of this utility model; Figure 6 BB is a top sectional view of the insulating sheet cutting module of this utility model; Figure 7 This is an exploded view of the assembly of the insulating sheet cutting module of this utility model.

[0012] In the diagram: 1. Drive module; 11. Servo motor; 12. Reducer; 13. Motor drive seat; 2. Support frame assembly; 21. Locking nut; 22. Motor mounting plate; 23. Column; 24. Support seat; 25. Mold mounting plate; 3. Insulating sheet cutting module; 311. Upper template; 312. Sealing ring; 321. Lower template; 322. Guide pin; 33. Mold frame guide post and guide sleeve; 34. Pressure plate; 35. Unloading plate; 361. Spring cover; 362. Spring guide post; 37. Perforated annular punch; 38. Center hole punch; 39. Pressure plate guide post; 4. Waste suction pipe; 5. Insulating sheet material strip. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0014] Reference Figures 1-7 A high-efficiency, low-cost lithium battery insulating sheet punching device, comprising: The support frame assembly 2 includes: four locking nuts 21, a motor mounting plate 22, four pillars 23, four support bases 24, and a mold mounting plate 25; All four locking nuts 21 penetrate the motor mounting plate 22. The four locking nuts 21 are respectively threaded to the top of the four pillars 23. The four pillars 23 are respectively fixedly installed on the top of the four support seats 24. The four support seats 24 are all fixedly installed on the top of the mold mounting plate 25. Insulating sheet material strip 5, the insulating sheet material strip 5 is located on top of the mold mounting plate 25; Drive module 1 is mounted on support frame assembly 2; Insulating sheet cutting module 3 is installed on drive module 1 and support frame assembly 2.

[0015] With the above structure, the insulating sheet of the cylindrical battery will not stick due to static electricity during the punching process, thus avoiding the problem of mold jamming caused by the failure to remove punching waste in time, thereby reducing the frequency of mold repair and procurement costs.

[0016] As a preferred embodiment of the present invention, the drive module 1 includes: a servo motor 11, a reducer 12, and a motor transmission base 13; The servo motor 11 is fixedly mounted on the top of the reducer 12, which is mounted on the top of the motor mounting plate 22. The reducer 12 cooperates with the motor drive seat 13. When the servo motor 11 is working, the torque is increased by the reducer 12 and the motor drive seat 13 is moved vertically downward.

[0017] As a preferred embodiment of this utility model, the insulating sheet cutting module 3 includes: an upper template 311, a sealing ring 312, a lower template 321, a guide pin 322, four mold frame guide pillars and guide sleeves 33, a pressure plate 34, a stripper plate 35, a spring cover 361, a spring guide pillar 362, a perforated annular punch 37, a center hole punch 38, and a pressure plate guide pillar 39. The upper template 311 is fixedly installed at the bottom of the motor drive seat 13. The sealing ring 312 is installed at the bottom of the upper template 311. The mold frame guide post and guide sleeve 33 are installed at the bottom of the upper template 311. The mold frame guide post and guide sleeve 33 cooperate with the guide pin 322. The lower mold is installed at the bottom of the mold frame guide post and guide sleeve 33. The pressure plate 34 is fixed at the bottom of the upper template 311. The spring guide post 362 is fixed at the top of the unloading plate 35. The spring guide post 362 is fixedly connected to the spring cover 361. The pressure plate guide post 39 is fixed at the bottom of the pressure plate 34. The perforated annular punch 37 and the center hole punch are also included. All 38 are fixed on the pressure plate 34. The upper template 311 has a connecting through hole and a connecting groove on its side wall. The connecting through hole and the connecting groove are connected. The pressure plate guide post 39 is fixed below the pressure plate 34 and passes through the guide sleeve through hole on the unloading plate 35 to provide punching guidance for the insulation sheet cutting module 3 and limit the unloading plate 35 in the horizontal direction. The connecting through hole is used to connect to the external vacuum or nitrogen conversion equipment, so that the perforated annular punch 37 has negative or positive pressure. The guide pin 322 is fixed above the lower template 321 to limit the insulation sheet strip 5 and prevent it from deviating.

[0018] As a preferred embodiment of this utility model, both the upper template 311 and the pressure plate 34 are provided with mounting through holes, and the spring guide post 362 passes through the mounting through holes.

[0019] As a preferred embodiment of this utility model, the bottom of the upper template 311 is provided with an adaptation groove, and the top of the sealing ring 312 slides in contact with the inner wall of the adaptation groove.

[0020] As a preferred embodiment of this utility model, a waste suction pipe 4 is fixedly installed at the bottom of the mold mounting plate 25. The waste suction pipe 4 is located below the support frame assembly 2 and is used to suck up and discharge the waste generated during the punching process. The bottom discharge and waste discharge are set to avoid the waste that is not cleaned up from getting stuck in the mold, thereby reducing the frequency of mold repair and procurement costs.

[0021] The working principle of this utility model is as follows: The insulating sheet material strip 5 is placed above the lower template 321 and is limited by the positioning pin 322; the servo motor 11 provides power, and after the torque is increased by the reducer 12, the drive motor transmission seat 13 applies a vertical downward force to the upper template 311; according to the positional relationship, the unloading plate 35 will first contact the insulating sheet material strip and press it tightly; at this time, since the spring cover 361 is not fixed to the upper template 311, the pressure plate 34 will continue to move vertically downward along the guide of the pressure plate guide post 39; since the perforated annular punch 37 and the center hole punch 38 are fixed in the sink of the pressure plate 34, they will also move vertically downward; and the center hole punch 38 first punches out the center circular hole of the insulating sheet material strip 5 and then immediately discharges it from the waste suction pipe 4; secondly, the perforated annular punch 37 punches out the insulating sheet material strip 5 into The circular insulating sheet, formed by punching, is attached to a perforated annular punch 37 by a vacuum or nitrogen conversion device connected to a through hole on the side wall of the upper template 311. It then moves downwards along the corresponding through hole on the lower template 321, with a 1mm tolerance maintained between the inner diameter of the through hole and the punch on each side to prevent scratching of punches 37 and 38. Finally, the perforated annular punch 37 passes through a through hole on the mold mounting plate 25 and, in conjunction with an external battery positioning mechanism, precisely places the finished insulating sheet onto the battery. During the downward pressing action, positive pressure is provided by the vacuum or nitrogen conversion device connected to the through hole on the side wall of the upper template 311 to blow off the insulating sheet, solving the problem of the insulating sheet not falling off due to electrostatic adhesion. Furthermore, this device eliminates the need for a vacuum nozzle to transfer the insulating sheet, reducing the risk of damage and vacuum leakage, improving equipment uptime, and lowering procurement and maintenance costs.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency, low-cost lithium battery insulating sheet punching device, characterized in that, include The support frame assembly (2) includes: four locking nuts (21), a motor mounting plate (22), four pillars (23), four support seats (24) and a mold mounting plate (25); All four locking nuts (21) penetrate the motor mounting plate (22). The four locking nuts (21) are threaded to the top of the four pillars (23). The four pillars (23) are fixedly installed on the top of the four support seats (24). The four support seats (24) are fixedly installed on the top of the mold mounting plate (25). Insulating sheet material strip (5), the insulating sheet material strip (5) is located on top of the mold mounting plate (25); A drive module (1) is mounted on a support frame assembly (2); Insulating sheet cutting module (3), which is mounted on drive module (1) and support frame assembly (2).

2. The high-efficiency, low-cost lithium battery insulating sheet punching device according to claim 1, characterized in that, The drive module (1) includes: a servo motor (11), a reducer (12), and a motor drive base (13). The servo motor (11) is fixedly mounted on the top of the reducer (12), which is mounted on the top of the motor mounting plate (22). The reducer (12) is matched with the motor drive seat (13).

3. The high-efficiency, low-cost lithium battery insulating sheet punching device according to claim 1, characterized in that, The insulating sheet cutting module (3) includes: an upper template (311), a sealing ring (312), a lower template (321), a guide pin (322), four mold frame guide pillars and guide sleeves (33), a pressure plate (34), a stripper plate (35), a spring cover (361), a spring guide pillar (362), a perforated annular punch (37), a center hole punch (38), and a pressure plate guide pillar (39). The upper template (311) is fixedly installed at the bottom of the motor drive seat (13), the sealing ring (312) is installed at the bottom of the upper template (311), the mold frame guide post and guide sleeve (33) is installed at the bottom of the upper template (311), the mold frame guide post and guide sleeve (33) cooperates with the guide pin (322), the lower mold is installed at the bottom of the mold frame guide post and guide sleeve (33), the pressure plate (34) is fixed at the bottom of the upper template (311), the spring guide post (362) is fixed at the top of the unloading plate (35), the spring guide post (362) is fixedly connected with the spring cover (361), the pressure plate guide post (39) is fixed at the bottom of the pressure plate (34), the perforated ring punch (37) and the center hole punch (38) are both fixed on the pressure plate (34), the upper template (311) has a connecting through hole and a connecting groove on its side wall, and the connecting through hole and the connecting groove are connected.

4. The high-efficiency, low-cost lithium battery insulating sheet punching device according to claim 3, characterized in that, The upper template (311) and the pressure plate (34) are both provided with mounting through holes, and the spring guide post (362) passes through the mounting through holes.

5. The high-efficiency, low-cost lithium battery insulating sheet punching device according to claim 3, characterized in that, The bottom of the upper template (311) is provided with an adaptation groove, and the top of the sealing ring (312) slides in contact with the inner wall of the adaptation groove.

6. The high-efficiency, low-cost lithium battery insulating sheet punching device according to claim 1, characterized in that, Waste suction pipe (4) is fixedly installed at the bottom of the mold mounting plate (25).

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