A punching device for an automotive battery case

Abstract

The present invention discloses a punching device for an automobile battery case, which includes a drilling mechanism, a clamping mechanism and a cooling mechanism. The drilling mechanism includes a drill bit with a through groove installed on a connecting plate arranged in a lifting manner; the clamping mechanism is used for clamping and translating the battery case; the cooling mechanism includes a liquid pool, a mounting plate provided with a liquid cylinder thereon, and two cooling blocks that can be embedded into the through groove on the mounting plate and can replace the coolant. Two liquid changing ports are arranged on the outer side wall of the cooling block. The two sides of the mounting plate are respectively a first area and a second area provided with a liquid inlet plug and a liquid outlet plug respectively docked with the liquid changing ports. A U-shaped push block plate that can move horizontally back and forth and is limited on both sides of the two cooling blocks is arranged on the mounting plate; the liquid cylinder is connected to the liquid pool connected to the two liquid outlet plugs, and the liquid cylinder is also respectively connected to the two liquid inlet plugs. While the connecting plate drives the drill bit to drill up and down, the U-shaped push block plate and the piston plug are driven to reciprocate along the liquid cylinder through a power mechanism. The present invention can improve the utilization rate of the drill bit and the drilling accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling, and particularly to a punching device for an automotive battery case. Background Art

[0002] The protective housing of a new energy vehicle battery needs to be assembled, so drilling processing is required for the housing. In recent years, fiberglass-reinforced composite materials have been widely used in the processing of battery cases. Drilling on battery cases made of this material compared to aluminum cases has the defect that heat is difficult to dissipate, mostly concentrated at the drill bit. Prolonged heat accumulation will impose a great burden on the drill bit, reducing the durability of the drill bit and shortening the service life of the tool. At the same time, it also affects the processing quality of the drilling object, resulting in defects such as wire drawing, burrs, delamination, and tearing of the battery case. Currently, in production, some use methods such as spraying coolant to cool the drill bit, but this method will increase the later cleaning burden of the battery case, the cooling effect is limited, and it affects the processing efficiency; similar methods will also cause waste of coolant. Summary of the Invention

[0003] Therefore, the present invention provides a punching device for an automotive battery case to solve the above defects in the prior art.

[0004] A punching device for an automotive battery case includes:

[0005] A workbench;

[0006] A drilling mechanism, which includes a support frame installed above the workbench, a connecting plate installed on the support frame and driven to lift by a first cylinder, and a drill bit rotatably installed on the connecting plate. A through groove is provided on the drill bit;

[0007] A clamping mechanism, which includes a moving plate arranged on the workbench and driven to move by a translation component, and a clamping member installed on the moving plate for clamping and positioning the battery case;

[0008] A cooling mechanism, which includes a liquid pool, a mounting plate fixedly installed below the support frame, a liquid cylinder installed on the mounting plate, and two cooling blocks arranged side by side that can be inserted into the through groove to replace the coolant. Two liquid replacement ports are provided on the outer side wall of the cooling block. The two sides of the mounting plate vertically penetrated by the drill bit are respectively a first area and a second area. An inlet plug and an outlet plug for docking with the two liquid replacement ports on the corresponding side of the cooling block are respectively provided in the first area and the second area. A U-shaped push block plate is arranged on the mounting plate and can be driven by a second cylinder to perform horizontal reciprocating motion and is limited on both sides of the two cooling blocks;

[0009] A cylinder plug is slidably arranged inside the liquid cylinder. The liquid cylinder is connected to the liquid pool through a first liquid inlet pipe, and the liquid cylinder is respectively connected to two of the liquid inlet plugs through a second liquid inlet pipe to alternately replace the liquid in them. The two liquid outlet plugs are connected to the liquid pool through a liquid outlet pipe. While the connecting plate drives the drill bit to drill up and down, the power mechanism drives the U-shaped push block plate to reciprocate left and right and drives the cylinder plug to reciprocate along the liquid cylinder.

[0010] Preferably, the power mechanism includes a guide cylinder and a complete gear vertically and rotatably installed below the support frame. A toothed ring meshing with the complete gear is arranged on the guide cylinder. The complete gear is coaxially provided with a missing gear. A rack meshing with the tooth part of the missing gear is horizontally installed on the cylinder plug. The distal end of the cylinder plug is connected to a return spring. Two vertical grooves are vertically and symmetrically arranged on the side wall of the guide cylinder. Two spiral grooves connecting the head and tail parts of the two vertical grooves are also arranged on the side wall of the guide cylinder. A shifting block capable of sliding relative to the vertical grooves and the spiral grooves is arranged on the connecting plate. Induction blocks capable of sensing the vertical passing of the shifting block are respectively installed on the vertical grooves. The controller is connected to the induction blocks and the second cylinder.

[0011] Preferably, the translation assembly includes an X-axis driving assembly installed on the workbench and a Y-axis driving assembly installed above the X-axis driving assembly. The moving plate is installed on the Y-axis driving assembly.

[0012] Preferably, the second liquid inlet pipe includes a main pipe communicating with the liquid cavity inside the liquid cylinder. The liquid outlet end of the main pipe is connected to the liquid inlet end of a three-way joint. The two liquid outlet ends of the three-way joint are respectively connected to the two liquid inlet plugs through a first pipe and a second pipe. The three-way joint is connected to a reversing valve for switching the communication state between the main pipe and the first pipe and the second pipe.

[0013] Preferably, a one-way liquid inlet valve is connected to the first liquid inlet pipe, and a one-way liquid outlet valve is connected to the second liquid inlet pipe.

[0014] Preferably, the width of the cooling block is equivalent to the cross-sectional width of the through groove, and the U-shaped push block plate gives way to the drill bit.

[0015] The present invention has the following advantages:

[0016] Through the combination of the drilling mechanism, the clamping mechanism and the cooling mechanism, the device of the present invention can, during the process of the drill bit rising and falling for drilling, realize the alternating transfer of the cooling blocks in the through groove of the drill bit between the first area and the second area, and automatically extrude and supplement the heated coolant in the cooling blocks in the first area and the second area during this process, so as to reduce the damage to the drill bit during the drilling process of materials with poor heat dissipation performance such as automotive battery cases made of glass fiber reinforced composites, improve the utilization rate and drilling accuracy of the drill bit, and improve the utilization efficiency of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 of the present invention Figure 1 is an enlarged schematic diagram of part A in;

[0019] Figure 3 is a schematic diagram of a partial structure of the present invention;

[0020] Figure 4 of the present invention Figure 3 is a schematic diagram of the structure from another perspective;

[0021] Figure 5 of the present invention Figure 4 is a schematic diagram of a partial structure;

[0022] Figure 6 is a schematic diagram of a partial connection structure of the cooling mechanism of the present invention;

[0023] Figure 7 is a schematic diagram of the heat exchange and movement structure of two cooling blocks of the present invention.

[0024] In the figure:

[0025] 1 - Workbench; 2 - Drilling mechanism; 3 - Clamping mechanism; 4 - Cooling mechanism; 10 - Battery case;

[0026] 201 - Support frame; 202 - Connecting plate; 203 - Drill bit; 204 - Through groove; 205 - First cylinder;

[0027] 301 - Moving plate; 302 - X - axis drive assembly; 303 - Y - axis drive assembly;

[0028] 401 - Liquid pool; 402 - Cooling block; 403 - Mounting plate; 404 - First area; 405 - Second area; 406 - Liquid inlet plug; 407 - Liquid outlet plug; 408 - U - shaped push - block plate; 409 - Second cylinder; 410 - Induction block; 411 - First liquid inlet pipe; 412 - Second liquid inlet pipe; 4121 - Main pipe; 4122 - Three - way; 4123 - First pipe; 4124 - Second pipe; 413 - Liquid outlet pipe; 414 - Spiral groove; 415 - Liquid cylinder; 416 - Pushing block; 417 - Vertical groove; 418 - Missing gear; 419 - Cylinder plug; 420 - Rack; 421 - Return spring; 422 - Guide cylinder; 423 - Complete gear; 424 - Liquid cavity; 425 - Liquid exchange port. DETAILED DESCRIPTION OF THE INVENTION

[0029] To make the technical means, creative features, achieved objectives and functions of the present invention easily understood, the present invention will be further described below in conjunction with specific embodiments.

[0030] As Figures 1 to 7 shown, the present invention provides a punching device for an automotive battery case, including a workbench 1, a drilling mechanism 2, a clamping mechanism 3 and a cooling mechanism 4.

[0031] Among them, the drilling mechanism 2 includes a support frame 201 installed above the workbench 1, a connecting plate 202 installed on the support frame 201 and driven to lift by a first cylinder 205, and a drill bit 203 rotatably installed on the connecting plate 202. A through groove 204 is provided on the drill bit 203;

[0032] Among them, the clamping mechanism 3 includes a moving plate 301 arranged on the workbench 1 and driven to move by a translation assembly, and a clamping member (not shown in the figure) installed on the moving plate 301 for clamping and positioning the battery case 10. Specifically:

[0033] The translation assembly includes an X-axis driving assembly 302 installed on the workbench 1 and a Y-axis driving assembly 303 installed above the X-axis driving assembly 302. The moving plate 301 is installed on the Y-axis driving assembly 303.

[0034] Among them, the cooling mechanism 4 includes a liquid pool 401, a mounting plate 403 fixedly installed below the support frame 201, a liquid cylinder 415 installed on the mounting plate 403, and two cooling blocks 402 arranged side by side that can be inserted into the through groove 204 to replace the coolant. Two liquid replacement ports 425 are provided on the outer side wall of the cooling block 402. The two sides of the mounting plate 403 vertically penetrated by the drill bit 203 are respectively a first area 404 and a second area 405. An inlet liquid plug 406 and an outlet liquid plug 407 that are docked with the two liquid replacement ports 425 on the corresponding side cooling block 402 are respectively provided in the first area 404 and the second area 405. A U-shaped push block plate 408 that can be driven to reciprocate horizontally by a second cylinder 409 and is limited on both sides of the two cooling blocks 402 is provided on the mounting plate 403. The width of the cooling block 402 is equivalent to the cross-sectional width of the through groove 204, and the U-shaped push block plate 408 gives way to the drill bit 203.

[0035] A piston 419 is slidably arranged inside the liquid cylinder 415. The liquid cylinder 415 is connected to the liquid pool 401 through a first liquid inlet pipe 411, and the liquid cylinder 415 is respectively connected to the two inlet liquid plugs 406 through a second liquid inlet pipe 412 and alternately replaces the liquid for them. Specifically:

[0036] The second liquid inlet pipe 412 includes a main pipe 4121 communicating with the liquid cavity 424 in the liquid cylinder 415. The liquid outlet end of the main pipe 4121 is connected to the liquid inlet end of a tee 4122. The two liquid outlet ends of the tee 4122 are respectively connected to the two liquid inlet plugs 406 through a first pipe 4123 and a second pipe 4124. The tee 4122 is connected to a reversing valve (not shown in the figure) for switching the communication state between the main pipe 4121 and the first pipe 4123 and the second pipe 4124. The reversing valve is connected to the controller.

[0037] A one-way liquid inlet valve (not shown in the figure) is connected to the first liquid inlet pipe 411, and a one-way liquid outlet valve (not shown in the figure) is connected to the second liquid inlet pipe 412.

[0038] The two liquid outlet plugs 407 are connected to the liquid pool 401 through a liquid outlet pipe 413.

[0039] While the connecting plate 202 drives the drill bit 203 to drill holes up and down, it drives the U-shaped push block plate 408 to reciprocate left and right and drives the cylinder plug 419 to reciprocate along the liquid cylinder 415 through a power mechanism. Specifically:

[0040] The power mechanism includes a guide cylinder 422 and a complete gear 423 vertically and rotatably installed below the support frame 201. A toothed ring (not shown in the figure) meshing with the complete gear 423 is provided on the guide cylinder 422. The complete gear 423 is coaxially provided with a missing gear 418. A rack 420 meshing with the tooth part of the missing gear 418 is horizontally installed on the cylinder plug 419. The distal end of the cylinder plug 419 is connected to a return spring 421. Two vertical grooves 417 are vertically and symmetrically provided on the side wall of the guide cylinder 422. Two spiral grooves 414 connecting the head and tail parts of the two vertical grooves 417 are also provided on the side wall of the guide cylinder 422. A slider 416 capable of sliding relative to the vertical grooves 417 and the spiral grooves 414 is provided on the connecting plate 202. Induction blocks 410 capable of sensing the vertical passing of the slider 416 are respectively installed on the vertical grooves 417. The controller (not shown in the figure) is connected to the induction blocks 410 and the second cylinder 409.

[0041] The working principle of the device of the present invention is as follows:

[0042] I. Feeding:

[0043] The battery case 10 to be drilled is placed on the moving plate 301 and is positioned and clamped by the clamping member. During the process of drilling the battery case 10, the position of the battery case 10 relative to the drill bit 203 can be adjusted according to the hole position.

[0044] In the initial state, a cooling block 402 containing coolant inside is placed into the through groove 204 of the drill bit 203, and another cooling block 402 used to replace the cooling block 402 in the through groove 204 is placed in the first area 404 of the mounting plate 403. The two cooling blocks 402 are close to each other and are limited by the U-shaped push block plate 408 therein.

[0045] II. Drilling:

[0046] During the drilling process, with the lifting and lowering of the drill bit 203, the left and right alternating displacements of the two cooling blocks 402 in the through groove 204 of the drill bit 203 can be synchronously completed, that is, the two cooling blocks 402 are located in the first area 404 and the through groove 204, and then are translated to be located in the through groove 204 and the second area 205 respectively, and so on alternately; and the coolant inside the replaced cooling block 402 after the internal drilling temperature rise is automatically replaced, so as to ensure the cooling effect during the drilling process of the drill bit 203. The cycle of the above process generally needs to go through the following four processes:

[0047] Process 1: See Figure 7 (a), the first cylinder 205 drives the drill bit 203 on the connecting plate 202 to drill downwards. During this process, the shifting block 416 on the connecting plate 202 will move downwards along a spiral groove 414 on the guide cylinder 422, so that the guide cylinder 422 rotates along the rotating shaft. During the rotation of the guide cylinder 422, the gear ring thereon will drive the complete gear 423 to rotate, and the missing gear 418 coaxially installed with the complete gear 423 will also rotate accordingly. The missing gear 418 will drive the piston plug 419 connected to the rack 420 meshing with its tooth part to move outwards along the liquid cylinder 415, and make the volume of the liquid cavity 424 in the liquid cylinder 415 increase. The negative pressure formed inside makes the coolant in the liquid pool 401 enter the liquid cavity 424 through the first liquid inlet pipe 411; when the missing tooth part of the missing gear 418 rotates to be opposite to one side of the rack 420, under the elastic action of the compressed return spring 421, the piston plug 419 resets, and the coolant in the liquid cavity 424 is squeezed through the main pipe 4121, the tee 4122, and the first pipe 4123 to enter the cooling block 402 in the first area 404 through the liquid inlet plug 406 in the first area 404. The relatively hot coolant formed during the previous drilling process in the cooling block 402 in the first area 404 is replaced by the new coolant, and the hot coolant is squeezed into the liquid pool 401 through the liquid outlet pipe 413 to be cooled again.

[0048] Process 2: See Figure 7 (b), at this time, the drill bit 203 after the drilling is completed rises with the connecting plate 202, and the through groove 204 of the drill bit 203 will move upwards to be flush with the cooling block 402 in the first area 404. The shifting block 416 on the connecting plate 202 will move vertically upwards along a vertical groove 417 on the guide cylinder 422. At this time, the guide cylinder 422 will not rotate, that is, the coolant does not flow during this process.

[0049] When an induction block 410 on the vertical groove 417 senses the passing of the shifting block 416, it will transmit a signal to the controller. The controller will instruct the second cylinder 409 to drive the U-shaped push block plate 408 to move towards the second area 405 side and drive the reversing valve to change direction.

[0050] The cooling block 402 in the first area 404 that has already replaced the coolant will squeeze the cooling block 402 in the through groove 204, causing the overheated cooling block 402 in the through groove 204 to be squeezed to the second area 405 side. Moreover, the two liquid replacement ports 425 of the cooling block 402 in the second area 405 are respectively docked with the liquid inlet plug 406 and the liquid outlet plug 407 of the second area 405. The cooling block 402 that has replaced the coolant in the first area 404 before will replace and enter the through groove 204 of the drill bit 203, which is beneficial for the temperature adjustment during the next drilling of the drill bit 203.

[0051] Process three: See Figure 7 (c). Adjust the drilling position on the battery case 10 of the clamping mechanism 3. The first cylinder 205 drives the drill bit 203 on the connecting plate 202 to drill downwards again. At this time, the shifting block 416 moves downwards along another spiral groove 414 on the guide cylinder 422, promoting the rotation of the guide cylinder 422. And referring to Process one, replace the liquid of the cooling block 402 located in the second area 405. Only due to the reversing of the reversing valve in Process two, the coolant liquid in the liquid cavity 424 will be squeezed into the cooling block 402 in the second area 405 from the liquid inlet plug 406 of the second area 405 through the main pipe 4121, the tee 4122, and the second pipe 4124.

[0052] Process four: See Figure 7 (d). The drill bit 203 that has completed drilling rises again with the connecting plate 202. This time, the shifting block 416 moves upwards along another vertical groove 417 on the guide cylinder 422 and is sensed by the induction block 410 on another vertical groove 417, which will drive the second cylinder 409 to squeeze the cooling block 402 in the second area 405 limited by the U-shaped push block plate 408 to the cooling block 402 in the through groove 204 of the drill bit 203 into the first area 404. Then repeat the above four working processes until all drilling operations on the battery case 10 are completed.

[0053] Through the combination of the drilling mechanism 2, the clamping mechanism 3 and the cooling mechanism 4, the device of the present invention can realize the alternating transfer of the cooling block 402 in the through groove 204 of the drill bit 203 between the first area 404 and the second area 405 during the lifting and drilling process of the drill bit 203, and automatically extrude and supplement the heated coolant in the cooling block 402 in the first area 404 and the second area 405 during this process, so as to reduce the damage to the drill bit during the drilling process of materials with poor heat dissipation performance such as the automotive battery case 10 made of glass fiber reinforced composite materials, improve the utilization rate and drilling accuracy of the drill bit, and improve the utilization efficiency of the coolant.

[0054] Although the present invention has been described in detail above with general descriptions and specific embodiments, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection of the present invention.

Claims

1. An automobile battery case punching device, characterized in that: including a workbench (1); a drilling mechanism (2), which includes a support frame (201) installed above the workbench (1), a connecting plate (202) installed on the support frame (201) and driven to lift by a first cylinder (205), and a drill bit (203) rotatably installed on the connecting plate (202), and a through groove (204) is formed on the drill bit (203); a clamping mechanism (3), which includes a moving plate (301) arranged on the workbench (1) and driven to move by a translation assembly, and a clamping member installed on the moving plate (301) for clamping and positioning a battery case (10); a cooling mechanism (4), which includes a liquid pool (401), a mounting plate (403) fixedly installed below the support frame (201), a liquid cylinder (415) installed on the mounting plate (403), and two cooling blocks (402) arranged side by side that can be inserted into the through groove (204) to replace the coolant. Two liquid replacement ports (425) are arranged on the outer side wall of the cooling block (402). The two sides of the mounting plate (403) vertically penetrated by the drill bit (203) are a first area (404) and a second area (405) respectively. An inlet liquid plug (406) and an outlet liquid plug (407) respectively connected to the two liquid replacement ports (425) on the corresponding side cooling block (402) are arranged in the first area (404) and the second area (405). A U-shaped push block plate (408) that can be driven to reciprocate horizontally by a second cylinder (409) and is limited on both sides of the two cooling blocks (402) is arranged on the mounting plate (403); a piston (419) is slidably arranged inside the liquid cylinder (415). The liquid cylinder (415) is connected to the liquid pool (401) through a first liquid inlet pipe (411), and the liquid cylinder (415) is respectively connected to the two inlet liquid plugs (406) through a second liquid inlet pipe and alternately replaces the liquid for them. The two outlet liquid plugs (407) are connected to the liquid pool (401) through an outlet liquid pipe (413). While the connecting plate (202) drives the drill bit (203) to drill up and down, the U-shaped push block plate (408) is driven to reciprocate left and right and the piston (419) is driven to reciprocate along the liquid cylinder (415) by a power mechanism.

2. The punching device for an automotive battery case according to claim 1, wherein: The power mechanism includes a guide cylinder (422) vertically and rotatably installed below the support frame (201) and a complete gear (423). A toothed ring meshing with the complete gear (423) is arranged on the guide cylinder (422). An incomplete gear (418) is coaxially arranged on the complete gear (423). A rack (420) meshing with the tooth part of the incomplete gear (418) is horizontally installed on the piston plug (419). The distal end of the piston plug (419) is connected to a return spring (421). Two vertical grooves (417) are vertically and symmetrically arranged on the side wall of the guide cylinder (422). Two spiral grooves (414) respectively connecting the head and tail parts of the two vertical grooves (417) are also arranged on the side wall of the guide cylinder (422). A slider (416) capable of sliding relative to the vertical grooves (417) and the spiral grooves (414) is arranged on the connecting plate (202). Inductive blocks (410) capable of sensing the vertical passing of the slider (416) are respectively installed on the two vertical grooves (417). The controller is connected to the inductive blocks (410) and the second cylinder (409).

3. The punching device for an automotive battery case according to claim 1, wherein: The translation assembly includes an X-axis driving assembly (302) installed on the workbench (1) and a Y-axis driving assembly (303) installed above the X-axis driving assembly (302). The moving plate (301) is installed on the Y-axis driving assembly (303).

4. A punching device for an automotive battery case according to claim 1, characterized in that: The second liquid inlet pipe includes a main pipe (4121) communicating with the liquid cavity (424) in the liquid cylinder (415). The liquid outlet end of the main pipe (4121) is connected to the liquid inlet end of a tee joint (4122). The two liquid outlet ends of the tee joint (4122) are respectively connected to the two liquid inlet plugs (406) through a first pipe (4123) and a second pipe (4124). The tee joint (4122) is connected to a reversing valve for switching the communication state between the main pipe (4121) and the first pipe (4123) and the second pipe (4124).

5. The punching device for an automotive battery case according to claim 1, wherein: A one-way liquid inlet valve is connected to the first liquid inlet pipe (411), and a one-way liquid outlet valve is connected to the second liquid inlet pipe.

6. The punching device for an automotive battery case according to claim 1, wherein: The width of the cooling block (402) is equivalent to the cross-sectional width of the through groove (204), and the U-shaped push block plate (408) gives way to the drill bit (203).

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