Torsion-resistant tool for high-precision assembly on galvanic pile production line

Abstract

The invention relates to the field of galvanic pile production equipment, in particular to a torsion-resistant tool for high-precision assembly on a galvanic pile production line. The stacked fixed backer is fixedly arranged on the top surface of the reference bottom plate; the stacking movable backer is arranged on the top surface of the reference bottom plate and is opposite to the stacking fixed backer; the adjusting mechanism is fixedly installed on the reference bottom plate and provided with an action end, and the action end is connected to the stacking movable backer. The adjusting mechanism can drive the stacking movable backer to linearly move towards or away from the stacking fixed backer. According to the tool, the stacking efficiency is improved while the stacking precision of the single cells of the electric pile is ensured; an effective anti-torsion effect is achieved for tightening an anti-disassembly nut at a special position of a galvanic pile, all parts do not interfere with one another while playing respective roles in a limited and narrow space due to the overall design, the structure is simple, the machining requirement and the assembly requirement are low, the cost is saved, and the labor intensity of workers is reduced; the whole structure is clean and pollution-free, and the environment is effectively protected.

Description

Technical Field

[0001] The invention relates to the field of fuel cell production equipment, and in particular to a tooling with high-precision assembly and anti-torsion for a fuel cell production line. Background Art

[0002] The fuel cell stack is the core component of the hydrogen fuel engine, and the stacking accuracy of the single cells in the fuel cell stack will directly affect the sealing of the inner cavity of the fuel cell stack and then affect the performance of the engine. Previously, the stacking of single cells was mainly done manually, which could not guarantee the required stacking accuracy and was inefficient. At the same time, the most important process in the later stage of the fuel cell stack assembly process is the tightening process of the fuel cell stack. The upper and end plates, current collecting plates, partitions, single cells, etc. of the fuel cell stack are tightly locked together by tightening the screws and nuts and reaching the target torque. Since the stacking of the fuel cell stack and the entire press-fitting and tightening process are automatically performed on the conveyor line, a tooling with anti-torsion for high-precision assembly of the fuel cell stack production line on the conveyor line is required.

[0003] In addition, after the screw and nut are tightened with the help of the anti-torsion sleeve, there will be an interaction force between the nut and the anti-torsion sleeve, which makes it difficult to easily remove the battery stack from the anti-torsion tooling at the offline workstation after the battery stack is tightened as a whole. Therefore, other auxiliary equipment is more complicated. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a tool for high-precision assembly of anti-torsion belts on a fuel cell production line. The tool can be adapted to the stacking of single cells in a fuel cell stack in automated production, and the anti-torsion tool can be unlocked through simple actions.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A tooling for high-precision assembly of anti-torsion belts on a battery stack production line, comprising:

[0007] Base plate;

[0008] A stacking fixed backer, which is fixedly arranged on the top surface of the reference bottom plate;

[0009] A stacking movable backer is arranged on the top surface of the reference bottom plate and is opposite to the stacking fixed backer;

[0010] An adjustment mechanism, which is fixedly mounted on the reference bottom plate, and has an action end, which is connected to the stacking movable backer;

[0011] The adjusting mechanism can drive the stacking movable backing to move linearly toward or away from the stacking fixed backing.

[0012] Preferably, the tooling for high-precision assembly of anti-torsion belts on a battery stack production line further includes:

[0013] A connecting block connected to the action end of the adjusting mechanism;

[0014] A linear guide rail is fixed to the reference base plate and is located below the connecting block. The linear guide rail is provided with a slider, and the connecting block is connected to the slider.

[0015] The extension direction of the linear guide rail is parallel to the line connecting the stacking fixed backing and the stacking movable backing.

[0016] Preferably, the adjustment mechanism is a stacked movable backrest fixing clamp.

[0017] Preferably, the connecting block includes a through hole horizontally passing through the connecting block, the action end of the adjusting mechanism has a horizontally arranged screw rod, the screw rod passes through the through hole of the connecting block, and a stacking movable backrest limit adjustment screw is provided on the side of the connecting block away from the adjusting mechanism, and the stacking movable backrest limit adjustment screw is used to cooperate with the screw rod to adjust the closed position of the stacking movable backrest.

[0018] Preferably, the connecting block is a horizontally arranged bow-shaped member, and there are two groups of stacking fixed backrests and stacking movable backrests, and two ends of the connecting block are respectively connected to a stacking movable backrest.

[0019] Preferably, an anti-torsion tooling is included between the stacking fixed backrest and the stacking movable backrest, and the anti-torsion tooling includes an anti-torsion sleeve, a stack nut, a stack screw and a stack top plate, wherein there are multiple anti-torsion sleeves and they are respectively located on both sides of the width direction of the stack station, the anti-torsion sleeve is rotatably installed on the top surface of the reference base plate, and each of the anti-torsion sleeves has a stack nut on the top, the lower end of the stack screw has an external thread, the stack screw is connected to the stack nut by threads, the stack top plate is located above the stack station, and the upper end of the stack screw is rotatably connected to the stack top plate.

[0020] Preferably, the outer periphery of the anti-torsion sleeve has two mutually parallel locking surfaces; the top surface of the reference bottom plate is also provided with an unlocking slide plate at a position corresponding to the stack station, and the unlocking slide plate is provided with a locking groove at a position corresponding to the anti-torsion sleeve, the anti-torsion sleeve is located in the locking groove, and the locking groove includes a narrow mouth area whose width matches the spacing between the two locking surfaces, and an expanded mouth area whose width is greater than the narrow mouth area;

[0021] Horizontally sliding the reference base plate enables positioning of the anti-torsion sleeve through the narrow mouth area.

[0022] Preferably, a support plate is provided above the unlocking slide, the support plate is fixedly connected to the reference bottom plate, and the unlocking slide can slide between the support plate and the reference bottom plate, and the support plate is used to limit the horizontal movement of the unlocking slide.

[0023] Preferably, threaded holes are provided at four corners of the top surface of the support plate, and top screws are installed in the threaded holes. The top screws are used to accurately adjust the height of the stack support surface.

[0024] The beneficial effects of using the present invention are:

[0025] The high-precision assembly with anti-torsion tooling on the battery stack production line ensures the stacking accuracy of the battery stack cells while improving the stacking efficiency; it also plays an effective anti-torsion role in tightening the anti-dismantling nuts at special positions of the battery stack. The overall design enables each part to play its own role without interfering with each other in a limited and narrow space. It has a simple structure, low machining and assembly requirements, saves costs, and reduces labor intensity; the overall structure is clean and pollution-free, effectively protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the tooling used for high-precision assembly of torsion-resistant tools on the fuel cell production line.

[0027] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0028] Figure 3 This is a top view schematic diagram of the tooling used for high-precision assembly of anti-torsion components on the fuel cell production line.

[0029] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0030] Figure 5 for Figure 3 Cross-sectional view along CC.

[0031] Figure 6 Schematic diagram of the anti-torsion sleeve.

[0032] Reference numerals include:

[0033] 1-reference base plate, 2-stacking fixed support, 3-stacking movable support, 4-unlocking slide plate, 41-locking slot, 411-narrow mouth area, 412-expansion area, 5-anti-torsion tooling, 51-anti-torsion sleeve, 511-locking surface, 52-battery stack nut, 53-avoidance groove, 54-battery stack screw, 55-battery stack top plate, 6-support plate, 7-stacking movable support fixing clamp, 8-linear guide rail, 9-stacking movable support limit adjustment screw, 10-connecting block. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the technical solution more clear, the technical solution is further described in detail below in conjunction with specific implementation methods. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the technical solution.

[0035] In order to solve the problem that the manual stacking of the battery stack in the prior art cannot meet the requirements of automated production, and the interaction force between the nut and the anti-torsion sleeve 51 cannot easily remove the battery stack from the anti-torsion tooling 5, as Figure 1 As shown, this embodiment proposes a tooling with high-precision assembly and anti-torsion on a battery stack production line, a reference base plate 1 is provided at the bottom of the tooling, the reference base plate 1 serves as the basis for installing various components, the reference base plate 1 is a metal plate, and two stacking fixed backrests 2 are provided on the top surface of the reference base plate 1, the lower ends of the two stacking fixed backrests 2 are fixed on the front side of the reference base plate 1, and two stacking movable backrests 3 are provided opposite to the two stacking fixed backrests 2, the stacking movable backrests 3 and the stacking fixed backrests 2 are opposite to each other, and an independent battery stack station is formed between the two stacking movable backrests 3 and the stacking fixed backrests 2, a linear guide 8 is installed between the two stacking movable backrests 3, the bottom of the linear guide 8 is connected to the reference base plate 1, and a stacking movable backrest fixing clamp 7 is provided on the back side of the stacking movable backrest 3, that is, the stacking movable backrest 3 is opposite to the battery stack station direction, the action end of the stacking movable backrest fixing clamp 7 is connected to a wire rod, and the action end of the stacking movable backrest fixing clamp 7 is connected to the connecting block 10 through a wire rod.

[0036] In this embodiment, the linear guide rail 8 has a slider, and the connecting block 10 is fixedly connected to the slide rail, so the linear guide rail 8 can guide the connecting block 10 to move only linearly forward and backward through the connection between the slider and the connecting block 10, that is, the extension direction of the linear guide rail 8 is parallel to the connection line between the stacking fixed backrest 2 and the stacking movable backrest 3. Since the stacking movable backrest fixing clamp 7 is connected to the connecting block 10 through a screw rod, the stacking movable backrest fixing clamp 7 can be manually operated to drive the connecting block 10 to move along the extension direction of the linear guide rail through the action end of the stacking movable backrest fixing clamp 7, that is, the connecting block 10 pushes and pulls the two stacking movable backrests 3 to move toward the stacking fixed backrest 2, or to move away from the stacking fixed backrest 2.

[0037] In other embodiments, the linear guide rail 8 can be replaced with other linear guide mechanisms. At the same time, the stacking movable backing fixing clamp 7 can also be replaced with a pneumatic device or an electric device, which can drive the connecting block 10 to move linearly.

[0038] Combination Figure 3 and Figure 4As shown, the connection method between the screw rod and the connection block 10 in this embodiment is as follows: the connection block 10 includes a through hole that passes through the connection block 10 horizontally, and the action end of the adjustment mechanism has a screw rod that is horizontally arranged. The screw rod passes through the through hole of the connection block 10. The screw rod is provided with a stacking movable backrest limit adjustment screw 9 on the side of the connection block 10 away from the adjustment mechanism. The stacking movable backrest limit adjustment screw 9 is used to cooperate with the screw rod to adjust the closed position of the stacking movable backrest 3. There are positioning devices on both sides of the connection block 10. In this embodiment, the positioning device of the connection block 10 is the stacking movable backrest limit adjustment screw 9. By adjusting the position of the stacking movable backrest limit adjustment screw 9, the extreme movement position of the connection block 10 can be finely adjusted, and finally the movement position of the stacking movable backrest 3 can be adjusted.

[0039] For example, after a predetermined number of battery stacks are placed in the battery stacking station, the stacking movable backrest fixing clamp 7 can be manually operated, and the action end of the stacking movable backrest fixing clamp 7 can push the connecting block 10 to move on the linear guide rail 8, and the connecting block 10 is limited by the stacking movable backrest limit adjustment screw 9 to move the connecting block 10 to the extreme position. At this time, the stacking movable backrest 3 moves to the preset extreme position, and the stacking fixed backrest 2 and the stacking movable backrest 3 cooperate to limit the stacking area of ​​the battery stack.

[0040] It should be noted that the function of the reference base plate 1 is to unify all components and supporting workpieces such as the reference fixed stacking backrest. The bottom of the reference base plate 1 is equipped with a wear-resistant strip suitable for transportation and circulation on a conveyor line such as a double-speed chain. The function of the stacking fixed backrest 2 on the reference base plate 1 is to limit the position of components such as single cells when the battery stack is stacked. The stacking fixed backrest 2 has a groove corresponding to the width of the battery stack station corresponding to the direction of the battery stack station, and cooperates with the stacking movable backrest 3 to achieve the restriction of the multi-directional freedom of the battery stack. The function of the stacking movable backrest 3 is to facilitate the stacking of single cells within a certain space range when the backrest is released, and to limit the single cells to the required stacking accuracy when closed. The stacking movable backrest fixing clamp 7 can move the stacking movable backrest 3 by manually operating the clamp, and has a large clamping force when clamping to keep the stacking movable backrest 3 in the required position.

[0041] In this embodiment, since there are two groups of stacked fixed backrests 2 and stacked movable backrests 3, the connecting block 10 is a horizontally arranged bow-shaped member. In other embodiments, the structure and shape of the connecting block 10 can also be changed according to the different designs of the number of stacked fixed backrests 2 and stacked movable backrests 3.

[0042] In summary, the design of the stacking fixed backrest 2 and the stacking movable backrest 3 ensures both the convenience and the stacking accuracy during stacking. The design of the stacking movable backrest limit adjustment screw 9 greatly reduces the overall machining accuracy requirements and assembly accuracy requirements. At the same time, the design and application of the linear guide 8 ensures the repeated positioning accuracy of the stacking movable backrest 3 each time it is pushed against. At the same time, the design and application of the stacking movable backrest fixing clamp 7 saves labor while ensuring the holding force of the fixed stacking movable backrest.

[0043] like Figure 1 and Figure 5 As shown, the stacking fixed backing 2 and the stacking movable backing 3 also include an anti-torsion tooling 5, which includes an anti-torsion sleeve 51, a stack nut 52, a stack screw 54 and a stack top plate 55, wherein there are multiple anti-torsion sleeves 51 and they are respectively located on both sides of the width direction of the stack station, the anti-torsion sleeves 51 are rotatably installed on the top surface of the reference bottom plate 1, and the top of each anti-torsion sleeve 51 has a stack nut 52, the lower end of the stack screw 54 has an external thread, the stack screw 54 is connected to the stack nut 52 by threads, the stack top plate 55 is located above the stack station, and the upper end of the stack screw 54 is rotatably connected to the stack top plate 55. The column-mounted structure connected by the anti-torsion sleeve 51 and the stack nut 52 has a avoidance groove 53 inside, and the avoidance groove 53 is used to accommodate the end of the stack screw 54. The anti-torsion sleeve 51, the stack nut 52, the stack screw 54 and the stack top plate 55 cooperate with the supporting components below to generally form a cage structure around the outside of the stack, so as to prevent the stack nut 52 from rotating when the stack screw 54 is tightened after the stack is stacked. The stack nut 52 is positioned and clamped by the anti-torsion sleeve 51, so as to lock the stack.

[0044] In this embodiment, the function of the anti-torsion sleeve 51 is that when the stack screw 54 and the stack nut 52 are tightened, one end of the anti-torsion sleeve 51 clamps the hexagonal nut, and the other end is clamped in the lock groove 41 of the unlocking slide 4, so as to achieve the effect of preventing the stack nut 52 from rotating and twisting when tightening the stack nut 52.

[0045] Combination Figure 2 and Figure 6As shown, the outer periphery of the anti-torsion sleeve 51 has two mutually parallel locking surfaces 511; the top surface of the reference base plate 1 corresponds to the battery stack station and is also provided with an unlocking slide plate 4, and a locking groove 41 is provided at the unlocking slide plate 4 corresponding to the anti-torsion sleeve 51, and the anti-torsion sleeve 51 is located in the locking groove 41, and the locking groove 41 includes a narrow area 411 matching the spacing between the two locking surfaces 511 with a width, and an expansion area 412 with a width greater than the narrow area 411; the horizontal sliding reference base plate 1 can position the anti-torsion sleeve 51 through the narrow area 411. The unlocking slide plate 4 is also provided with a support plate 6 above, and the support plate 6 is fixedly connected to the reference base plate 1, and the unlocking slide plate 4 can slide between the support plate 6 and the reference base plate 1, and the support plate 6 is used to limit the unlocking slide plate 4 from moving in the horizontal direction. When the nut of the battery stack screw 54 is tightened, the unlocking slide plate 4 can slide to clamp the anti-torsion sleeve 51 to prevent rotation, and the locking surface 511 of the anti-torsion sleeve 51 enters the narrow area 411 from the expansion area 412 of the locking groove 41. Secondly, when the battery stack is offline, the unlocking slide plate 4 can be pushed by external force so that the unlocking slide plate 4 no longer blocks the anti-torsion sleeve 51, thereby eliminating the reaction force generated during tightening, thereby facilitating the battery stack to be easily removed from the tooling. In addition, the design of the unlocking slide plate 4 has both the functions of anti-torsion and unlocking, and also has the function of limiting the anti-torsion sleeve 51 in the hole of the reference bottom plate 1 to prevent it from detaching.

[0046] The top surface of the support plate 6 is provided with threaded holes at the four corners, and the threaded holes are installed with top screws, which are used to accurately adjust the height of the stack support surface. The support plate 6 serves as the support surface when the stack is assembled, and the support plate 6 can also clamp the unlocking slide plate 4, limiting it to slide only within a certain range of front and rear.

[0047] In summary, the high-precision assembly with anti-torsion tooling on the battery stack production line ensures the stacking accuracy of the battery stack cells while improving the stacking efficiency; it also plays an effective anti-torsion role in tightening the anti-dismantling nuts at special positions of the battery stack. The overall design enables each part to play its respective role without interfering with each other in a limited and narrow space. It has a simple structure, low machining and assembly requirements, saves costs, and reduces manual labor intensity; the overall structure is clean and pollution-free, effectively protecting the environment.

[0048] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present technical content. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of this patent.

Claims

1. A tooling for high-precision assembly with anti-torsion on a battery production line, characterized by: include Base plate; A stacking fixed backer, which is fixedly arranged on the top surface of the reference bottom plate; A stacking movable backer is arranged on the top surface of the reference bottom plate and is opposite to the stacking fixed backer; An adjustment mechanism, which is fixedly mounted on the reference bottom plate, and has an action end, which is connected to the stacking movable backer; The adjusting mechanism can drive the stacking movable backing to move linearly toward or away from the stacking fixed backing.

2. The tooling for high-precision assembly with anti-torsion on a battery stack production line according to claim 1 is characterized in that: The tooling for high-precision assembly of anti-torsion belts on the battery stack production line also includes: A connecting block connected to the action end of the adjusting mechanism; A linear guide rail is fixed to the reference base plate and is located below the connecting block. The linear guide rail is provided with a slider, and the connecting block is connected to the slider. The extension direction of the linear guide rail is parallel to the line connecting the stacking fixed backing and the stacking movable backing.

3. The tooling for high-precision assembly with anti-torsion on a battery stack production line according to claim 1 is characterized in that: The adjusting mechanism is a stacked movable backrest fixing clamp.

4. The tooling for high-precision assembly with anti-torsion on a battery stack production line according to claim 2 is characterized in that: The connecting block includes a through hole that passes through the connecting block horizontally, and the action end of the adjusting mechanism has a horizontally arranged screw rod, and the screw rod passes through the through hole of the connecting block. A stacking movable backrest limit adjustment screw is arranged on the side of the connecting block away from the adjusting mechanism, and the stacking movable backrest limit adjustment screw is used to cooperate with the screw rod to adjust the closed position of the stacking movable backrest.

5. The tooling for high-precision assembly with anti-torsion on a battery stack production line according to claim 2 is characterized in that: The connecting block is a horizontally arranged bow-shaped member, and there are two groups of stacking fixed backrests and stacking movable backrests, and two ends of the connecting block are respectively connected to a stacking movable backrest.

6. The tooling for high-precision assembly with anti-torsion on a battery stack production line according to claim 1 is characterized in that: The stacking fixed backrest and the stacking movable backrest also include an anti-torsion tooling, which includes an anti-torsion sleeve, a stack nut, a stack screw and a stack top plate, wherein there are multiple anti-torsion sleeves and they are respectively located on both sides of the width direction of the stack station, the anti-torsion sleeve is rotatably installed on the top surface of the reference bottom plate, and each of the anti-torsion sleeves has a stack nut on the top, the lower end of the stack screw has an external thread, the stack screw is connected to the stack nut by threads, the stack top plate is located above the stack station, and the upper end of the stack screw is rotatably connected to the stack top plate.

7. The tooling for high-precision assembly with anti-torsion on a battery stack production line according to claim 6 is characterized in that: The outer periphery of the anti-torsion sleeve has two mutually parallel locking surfaces; the top surface of the reference bottom plate is also provided with an unlocking slide plate at a position corresponding to the stack station, and the unlocking slide plate is provided with a locking groove at a position corresponding to the anti-torsion sleeve, the anti-torsion sleeve is located in the locking groove, and the locking groove includes a narrow mouth area whose width matches the spacing between the two locking surfaces, and an expanded mouth area whose width is greater than the narrow mouth area; Horizontally sliding the reference base plate enables positioning of the anti-torsion sleeve through the narrow mouth area.

8. The tooling for high-precision assembly with anti-torsion on a battery stack production line according to claim 7 is characterized in that: A support plate is also provided above the unlocking slide plate, the support plate is fixedly connected to the reference bottom plate, and the unlocking slide plate can slide between the support plate and the reference bottom plate, and the support plate is used to limit the movement of the unlocking slide plate in the horizontal direction.

9. The tooling for high-precision assembly with anti-torsion on a battery stack production line according to claim 8 is characterized in that: Threaded holes are arranged at four corners of the top surface of the support plate, and top screws are installed in the threaded holes. The top screws are used to accurately adjust the height of the stack support surface.

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