Punching device for bipolar plate machining

Abstract

The invention relates to the technical field of bipolar plate processing, and discloses a punching device for bipolar plate processing, which comprises a positioning table and a punching assembly, the positioning table is used for positioning and fixing a bipolar plate, a first connecting sleeve is fixedly arranged on each group of first positioning pieces, and a punching sleeve in the punching assembly is arranged in each first connecting sleeve; the bottom of the punching sleeve is fixedly connected with a punching head. Through the arrangement of the punching assembly, the punching effect on the bipolar plate is effectively completed in the downward moving state of a punching sleeve in the punching assembly, and when the punching sleeve is reset subsequently, a first grinding block arranged in the punching sleeve can extend out of the punching sleeve by correspondingly moving a connecting rod, so that the punching effect of the bipolar plate is improved. And the punching sleeve is rotated to be in contact with the inner wall of the punching hole of the bipolar plate, and the punching sleeve is rotated to be reset, so that the first polishing block can complete the polishing effect on the inner wall of the punching hole of the bipolar plate in a rotating state.

Description

Technical Field

[0001] The invention relates to the technical field of bipolar plate processing, in particular to a punching device for bipolar plate processing. Background Art

[0002] The electrolyzer bipolar plate is a key component in the electrolyzer, and its main functions are to conduct electrons, isolate hydrogen and oxygen, and transfer heat. At present, the processing procedures for the electrolyzer bipolar plate are to first use a stamping die to draw the bipolar plate to form a corresponding transverse and longitudinal profile on the bipolar plate, and then punch out a gas port on the longitudinal profile of the bipolar plate through the cooperation of the punch and the die.

[0003] The punching equipment in the prior art can generally only perform a single punching process on the bipolar plates of the electrolytic cell. After the punching is completed, the inner wall of the punched hole and the outer edge of the punched bottom of the punched hole often produce corresponding notches and burrs. In response to this phenomenon, users generally perform a secondary grinding process on the bipolar plates after punching, but this process will increase the processing time of the bipolar plates of the electrolytic cell as a whole.

[0004] Therefore, the existing demand is not met, and we propose a punching device for bipolar plate processing. Summary of the invention

[0005] The present invention provides a punching device for bipolar plate processing, which has the beneficial effects and solves the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solutions: a punching device for bipolar plate processing, comprising a positioning platform and a punching assembly, wherein the positioning platform is used to position and fix the bipolar plate, and a plurality of groups of first positioning members are fixedly arranged at the outer edge of the top of the positioning platform, and a first connecting sleeve is fixedly arranged on each group of first positioning members, and a punching sleeve in the punching assembly is arranged inside the first connecting sleeve, and a punching head is fixedly connected to the bottom of the punching sleeve, and the punching head is used to punch the bipolar plate; A movable spiral groove is also provided on the inner wall of the first connecting sleeve, and the movable spiral groove is connected to the movable straight groove. The movable straight groove is provided on the inner wall of the first connecting sleeve, and a limited flap is provided at the bottom end of the movable straight groove through the corresponding rotating rod and torsion spring rotation, and a limited flap is provided at the top end of the movable spiral groove through the corresponding rotating rod and torsion spring rotation.

[0007] As an optional scheme of a punching device for bipolar plate processing described in the present invention, wherein: a accommodating cavity is opened inside the punching sleeve, and a supporting base is movably arranged inside the accommodating cavity, the supporting base is slidably arranged inside the second slide groove through a corresponding slide rod, the second slide groove is opened on the inner wall of the accommodating cavity, and a limit block is fixedly arranged on the top of the supporting base, and the limit block is respectively provided with a first extrusion inclined surface and a second extrusion inclined surface.

[0008] As an optional scheme of a punching device for bipolar plate processing described in the present invention, an extrusion piece is also provided on one side of the limit block, the extrusion piece is in contact with the first extrusion slope, and the extrusion piece is slidably arranged inside the first slide groove through a corresponding slide rod.

[0009] As an optional scheme of a punching device for bipolar plate processing described in the present invention, wherein: the first slide groove is also opened on the inner wall of the accommodating cavity, and the side surface of the extrusion piece close to the limit block is also fixedly connected to one end of the connecting slide rod.

[0010] As an optional scheme of a punching device for bipolar plate processing described in the present invention, the other end of the connecting slide rod passes through the punching sleeve, and the other end of the connecting slide rod is slidably arranged inside the movable straight groove through a corresponding ball.

[0011] As an optional scheme of a punching device for bipolar plate processing described in the present invention, wherein: a connecting rod is fixedly connected to the bottom of the supporting base, and the connecting rod is also slidably arranged inside the second slide groove through a corresponding sliding rod, and two groups of second connecting sleeves are symmetrically arranged on the connecting rod, and the second connecting sleeve is rotatably arranged inside the connecting rod through a corresponding rotating rod, and a first connecting rotating rod is also slidably arranged inside the second connecting sleeve.

[0012] As an optional scheme of a punching device for bipolar plate processing described in the present invention, wherein: the end of the first connecting rod away from the second connecting sleeve is set on the corresponding first grinding block through the rotation of the corresponding rod, and a first spring is also arranged between the first connecting rod and the second connecting sleeve.

[0013] As an optional scheme of a punching device for bipolar plate processing described in the present invention, wherein: the punching head is also symmetrically provided with moving blocks, the moving blocks are slidably arranged inside the third slide groove through corresponding slide rods, the third slide groove is opened on the top surface of the punching head, and a third spring is also arranged between the two moving blocks.

[0014] As an optional scheme of a punching device for bipolar plate processing described in the present invention, wherein: a sliding cavity is also provided on the moving block, one end of a second connecting rotating rod is slidably arranged inside the sliding cavity, and the other end of the second connecting rotating rod is rotatably arranged on the connecting rod, and a second grinding block is also movably arranged on the moving block, a second spring is arranged between the second grinding block and the moving block, and a limiting hole is also provided on the surface of the punching sleeve corresponding to the shape of the moving block.

[0015] As an optional scheme of a punching device for bipolar plate processing described in the present invention, a driving cylinder is also arranged above the punching sleeve, the driving cylinder is fixedly arranged between two second positioning members, the second positioning members are fixedly arranged on the corresponding first positioning members, and the driving cylinder forms a fixed connection with the extrusion plate through the corresponding output end, the extrusion plate is arranged inside the accommodating cavity, and the extrusion plate is also slidably arranged on the top inner wall of the accommodating cavity through the corresponding ball bearings.

[0016] The present invention has the following beneficial effects: 1. The punching device for bipolar plate processing, through the punching assembly, not only allows the punching sleeve in the punching assembly to effectively complete the punching effect of the bipolar plate in the downward state, but also when the punching sleeve is subsequently reset, by allowing the connecting rod to move accordingly, the first grinding block arranged inside the punching sleeve can be extended out of the punching sleeve, thereby contacting the inner wall of the punching hole of the bipolar plate, and because the punching sleeve is rotated when it is reset, the first grinding block can also complete the grinding effect of the inner wall of the punching hole of the bipolar plate in a rotating state.

[0017] 2. The punching device for bipolar plate processing, through the setting of the limit block, the extrusion piece and the connecting rod, not only can the first grinding block be driven to move during the downward movement of the connecting rod, thereby completing the grinding effect on the inner wall of the punching hole of the bipolar plate, but also through the setting of the second connecting rotating rod, the two moving blocks arranged on the punching head can also move accordingly with the movement of the connecting rod, so that the second grinding block arranged on the moving block can smoothly extend out of the punching sleeve, thereby completing the grinding effect on the outer edge of the bottom of the punching hole of the bipolar plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the side structure of the punching sleeve of the present invention.

[0020] Figure 3 It is a schematic diagram of the first section structure of the partially punched sleeve of the present invention.

[0021] Figure 4 It is a schematic diagram of the internal structure of the partial punching sleeve of the present invention.

[0022] Figure 5 It is a schematic diagram of the exploded structure of the supporting base and the extrusion part of the present invention.

[0023] Figure 6 It is a schematic diagram of the cross-section structure of a local connecting rod of the present invention.

[0024] Figure 7 It is a schematic diagram of the second section structure of the partially punched sleeve of the present invention.

[0025] Figure 8 For the present invention Figure 7 Enlarged structural diagram at B in the middle.

[0026] Fig. 9 It is a schematic diagram of the partial cross-sectional structure of the first connecting sleeve of the present invention.

[0027] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at A in the middle.

[0028] In the figure: 1. Positioning table; 2. Punching assembly; 101, first positioning member; 102, first connecting sleeve; 103, movable straight groove; 104, movable spiral groove; 105, limiting flap; 106, second positioning member; 201, punching sleeve; 202, driving cylinder; 203, connecting slide rod; 204, first grinding block; 205, supporting base; 206, limiting block; 207, extrusion piece; 208, connecting rod; 209, second connecting sleeve; 210, first connecting rotating rod; 211, first spring; 212, punching head; 213, extrusion plate; 214, second connecting rotating rod; 215, moving block; 216, second grinding block; 217, second spring; 218, third spring; 219, first extrusion inclined surface; 220, second extrusion inclined surface; 221, accommodating chamber; 222, first slide groove; 223, second slide groove; 224, third slide groove; 225, sliding cavity; 226, limiting hole; 227, fourth spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] For example, see Figure 1-Figure 6 as well as Fig. 9 and Fig.10 A punching device for bipolar plate processing includes a positioning platform 1 and a punching assembly 2. The positioning platform 1 is used to position and fix the bipolar plate, and a plurality of groups of first positioning members 101 are fixedly arranged at the outer edge of the top of the positioning platform 1. A first connecting sleeve 102 is fixedly arranged on each group of first positioning members 101, and a punching sleeve 201 in the punching assembly 2 is arranged inside the first connecting sleeve 102. A punching head 212 is fixedly connected to the bottom of the punching sleeve 201, and the punching head 212 is used to punch the bipolar plate; A movable spiral groove 104 is also provided on the inner wall of the first connecting sleeve 102, and the movable spiral groove 104 is connected to the movable straight groove 103. The movable straight groove 103 is provided on the inner wall of the first connecting sleeve 102, and a limit flap 105 is provided at the bottom end of the movable straight groove 103 through a corresponding rotating rod and a torsion spring, and a limit flap 105 is provided at the top end of the movable spiral groove 104 through a corresponding rotating rod and a torsion spring.

[0031] A accommodating cavity 221 is provided inside the punching sleeve 201, and a supporting base 205 is movably provided inside the accommodating cavity 221. The supporting base 205 is slidably provided inside the second slide groove 223 through a corresponding slide rod. The second slide groove 223 is provided on the inner wall of the accommodating cavity 221. A limiting block 206 is also fixedly provided on the top of the supporting base 205, and a first extrusion inclined surface 219 and a second extrusion inclined surface 220 are respectively provided on the limiting block 206.

[0032] An extrusion piece 207 is further disposed on one side of the limiting block 206 . The extrusion piece 207 is in contact with the first extrusion inclined surface 219 , and the extrusion piece 207 is slidably disposed inside the first sliding groove 222 via a corresponding sliding rod.

[0033] The first sliding groove 222 is also formed on the inner wall of the accommodating cavity 221 , and a surface of one side of the extrusion member 207 close to the limiting block 206 is also fixedly connected to one end of the connecting sliding rod 203 .

[0034] The other end of the connecting slide rod 203 passes through the punching sleeve 201 , and the other end of the connecting slide rod 203 is slidably disposed inside the movable straight groove 103 through a corresponding ball.

[0035] The bottom of the supporting base 205 is fixedly connected with a connecting rod 208, which is also slidably arranged inside the second slide groove 223 through a corresponding sliding rod. Two groups of second connecting sleeves 209 are symmetrically arranged on the connecting rod 208, and the second connecting sleeves 209 are rotatably arranged inside the connecting rod 208 through a corresponding rotating rod. A first connecting rotating rod 210 is also slidably arranged inside the second connecting sleeve 209.

[0036] One end of the first connecting rod 210 away from the second connecting sleeve 209 is rotatably arranged on the corresponding first grinding block 204 through the corresponding rotating rod, and a first spring 211 is further arranged between the first connecting rod 210 and the second connecting sleeve 209 .

[0037] A driving cylinder 202 is also arranged above the punching sleeve 201. The driving cylinder 202 is fixedly arranged between the two second positioning members 106. The second positioning members 106 are fixedly arranged on the corresponding first positioning members 101. The driving cylinder 202 is fixedly connected with the extrusion plate 213 through the corresponding output end. The extrusion plate 213 is arranged inside the accommodating cavity 221, and the extrusion plate 213 is also slidably arranged on the top inner wall of the accommodating cavity 221 through the corresponding ball bearings.

[0038] In this embodiment: before punching the bipolar plate, the user first needs to place the bipolar plate to be punched inside the positioning table 1, and the positioning table 1 is provided with a slot hole compatible with the punching head 212. At this time, the user can start the driving cylinder 202 set on the second positioning member 106. Since the driving cylinder 202 forms a fixed connection with the extrusion plate 213 set inside the punching sleeve 201 through the output end, when the driving cylinder 202 is started, the punching sleeve 201 will perform a corresponding movement effect inside the corresponding first connecting sleeve 102.

[0039] It should be noted that the extrusion plate 213 is arranged on the top inner wall of the punching sleeve 201 through the corresponding ball rotation, and this arrangement can not only effectively drive the punching sleeve 201 to move accordingly, thereby completing the punching effect of the bipolar plate, but also when the punching sleeve 201 is subsequently reset and rotated, the rotational friction can also be reduced through the setting of the ball, so as to better complete the grinding effect of the punching holes of the bipolar plate.

[0040] As the punching sleeve 201 moves, the punching head 212 fixedly arranged at the bottom of the punching sleeve 201 will gradually approach the bipolar plate and effectively complete the punching effect on the bipolar plate; With the completion of the punching of the bipolar plate, the user can start the driving cylinder 202 in reverse, thereby driving the punching sleeve 201 to perform a corresponding reset.

[0041] Since the punching sleeve 201 is also provided with a connecting slide bar 203, on the one hand, one end of the connecting slide bar 203 is slidably arranged inside the moving straight groove 103 opened in the first connecting sleeve 102 through a corresponding ball, and this arrangement not only effectively ensures the stability of the punching sleeve 201 when moving, but also by arranging a limiting flap 105 at the bottom of the moving straight groove 103, and the flipping direction of the limiting flap 105 can only be flipped downward; When the first connecting sleeve 102 is in the process of being reset, the first grinding block 204 arranged inside the punching sleeve 201 can complete the grinding effect on the punching hole during the reset process.

[0042] It should be noted that the top of the moving spiral groove 104 is also provided with a corresponding limit flap 105, and the limit flap 105 provided on the moving spiral groove 104 can only be flipped upwards, and this arrangement is to allow the subsequent connection slide bar 203 to be reset from the moving spiral groove 104 to the top end, and the movement of the connecting slide bar 203 can be limited by the limit flap 105, and a moving inclined surface is also provided between the moving spiral groove 104 and the moving straight groove 103 provided at the top; Therefore, through this arrangement, when the connecting slide bar 203 is reset to the top end, the connecting slide bar 203 will return to the inside of the movable straight groove 103 again, so that when punching is performed again later, the punching sleeve 201 can move smoothly. At the same time, due to the setting of the ball at the end of the connecting slide bar 203, when the ball on the connecting slide bar 203 slides in the middle of the movable straight groove 103, due to the setting of the ball on the connecting slide bar 203, the diameter of the ball is larger than the connecting groove between the movable straight groove 103 and the movable spiral groove 104, and thus the ball on the connecting slide bar 203 will not accidentally slide into the movable spiral groove 104 before moving to the two ends of the movable straight groove 103 during the sliding process inside the movable straight groove 103.

[0043] On the other hand, a fixed connection is formed between the other end of the connecting slide rod 203 and the extrusion piece 207, and the extrusion piece 207 is slidably arranged inside the first slide groove 222 through the corresponding slide rod. At the same time, since the movable spiral groove 104 is further opened toward the inner wall of the first connecting sleeve 102 on the basis of the movable straight groove 103, when the connecting slide rod 203 moves from the movable straight groove 103 to the inside of the movable spiral groove 104, the connecting slide rod 203 will drive the extrusion piece 207 to move toward the direction of the supporting base 205.

[0044] Since a limit block 206 is fixedly provided on the supporting base 205, and a first extrusion slope 219 and a second extrusion slope 220 are provided on the limit block 206, when the extrusion member 207 moves toward the supporting base 205, the extrusion member 207 will contact and extrude the first extrusion slope 219 of the limit block 206, and since the supporting base 205 is slidably arranged inside the second slide groove 223 through a corresponding sliding rod, through this limiting, the supporting base 205 will move downward a certain distance inside the second slide groove 223 through the sliding rod.

[0045] It should be noted that since a fourth spring 227 is also provided inside the second slide groove 223, when the supporting base 205 slides inside the second slide groove 223 through the slide rod, the slide rod provided for the supporting base 205 will squeeze the fourth spring 227. This arrangement is intended to allow the subsequent connected slide rod 203 to be reset, and then drive the extrusion member 207 to be reset. Through the elastic force of the fourth spring 227, the supporting base 205 can also be effectively reset to the initial position, so that the corresponding movement effect can be performed again later.

[0046] When the supporting base 205 moves downward, since a connecting rod 208 is also provided at the bottom of the supporting base 205, when the supporting base 205 moves, the connecting rod 208 will also move downward synchronously. It should be noted that the connecting rod 208 is also slidably arranged inside the second slide groove 223 through a corresponding slide rod, and this arrangement is to ensure the stability of the connecting rod 208 when it moves, so as to prevent the connecting rod 208 from deviating when it moves, thereby affecting the subsequent extension of the first grinding block 204 out of the punching sleeve 201; Since two groups of second connecting sleeves 209 are symmetrically arranged on the connecting rod 208, and one end of each second connecting sleeve 209 is rotatably arranged on the connecting rod 208, and the second connecting sleeve 209 is also softly connected with one end of the first connecting rotating rod 210 through the first spring 211, and the other end of the first connecting rotating rod 210 is rotatably arranged on the corresponding first grinding block 204, through this arrangement, after the connecting rod 208 moves, the second connecting sleeve 209 which is in an inclined setting will gradually change to a horizontal setting under the downward movement of the connecting rod 208, and this change will make the second connecting sleeve 209 which is in an inclined setting gradually change to a horizontal setting under the downward movement of the connecting rod 208. The first connecting rotating rod 210 inside the cylinder 209 pushes the corresponding first grinding block 204 for a certain distance, so that the first grinding block 204 can extend out of the punching sleeve 201. Since the punching sleeve 201 is still inside the punching hole of the bipolar plate at this time, the first grinding block 204 extending out of the punching sleeve 201 will gradually fit the inner wall of the punching hole of the bipolar plate. Moreover, since the punching sleeve 201 is in a rotating state when it is in the reset state, the first grinding block 204 fitted to the inner wall of the punching hole of the bipolar plate will also complete the grinding effect on the inner wall of the punching hole of the bipolar plate in a rotating state.

[0047] It should be noted that when the first grinding block 204 has been in contact with the inner wall of the punched hole of the bipolar plate under the movement of the first connecting rod 210, if the connecting rod 208 has not yet completed the movement, the first spring 211 can be set to allow the first connecting rod 210 to adaptively retract into the second connecting sleeve 209 to avoid jamming.

[0048] Through the above-mentioned arrangement, not only can the punching sleeve 201 effectively complete the punching effect on the bipolar plate in the downward state, but also when the punching sleeve 201 is subsequently reset, by allowing the connecting rod 208 to move accordingly, the first grinding block 204 set inside the punching sleeve 201 can also extend out of the punching sleeve 201, thereby contacting the inner wall of the punching hole of the bipolar plate, and because the punching sleeve 201 is rotated when it is reset, the first grinding block 204 can also complete the grinding effect on the inner wall of the punching hole of the bipolar plate in a rotating state.

[0049] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. Figure 3 , Figure 5 , Figure 7 already Figure 8 As shown, the punching head 212 is also symmetrically provided with moving blocks 215 , which are slidably arranged inside the third slide groove 224 through corresponding slide rods. The third slide groove 224 is opened on the top surface of the punching head 212 , and a third spring 218 is also arranged between the two moving blocks 215 .

[0050] The moving block 215 is also provided with a sliding cavity 225, inside which one end of the second connecting rotating rod 214 is slidably arranged, and the other end of the second connecting rotating rod 214 is rotatably arranged on the connecting rod 208, and a second grinding block 216 is also movably arranged on the moving block 215, and a second spring 217 is arranged between the second grinding block 216 and the moving block 215, and a limiting hole 226 is also arranged on the surface of the punching sleeve 201 corresponding to the shape of the moving block 215.

[0051] The moving block 215 is also provided with a sliding cavity 225, inside which one end of the second connecting rotating rod 214 is slidably arranged, and the other end of the second connecting rotating rod 214 is rotatably arranged on the connecting rod 208, and a second grinding block 216 is also movably arranged on the moving block 215, and a second spring 217 is arranged between the second grinding block 216 and the moving block 215, and a limiting hole 226 is also arranged on the surface of the punching sleeve 201 corresponding to the shape of the moving block 215.

[0052] In this embodiment: since the second connecting rotating rod 214 is symmetrically arranged at the bottom end of the connecting rod 208, and one end of the second connecting rotating rod 214 is rotatably arranged on the connecting rod 208, and the other end of the second connecting rotating rod 214 is slidably arranged inside the corresponding sliding cavity 225, and the sliding cavity 225 is opened on the moving block 215, therefore, when the connecting rod 208 extrude and descend the first extrusion inclined surface 219 under the extrusion member 207, the second connecting rotating rod 214 will slide inside the corresponding sliding cavity 225 under the downward movement of the connecting rod 208, and when the connecting rod 208 completes the first stage of downward movement, the second connecting rotating rod 214 just contacts the side surface of the sliding cavity 225, and this setting is to prevent the moving block 215 from moving accordingly after the first grinding block 204 moves.

[0053] After the extrusion piece 207 completes the extrusion of the first extrusion bevel 219, the first grinding block 204 has extended out of the punching sleeve 201 and completed the contact with the inner wall of the punching hole of the bipolar plate. As the connecting slide bar 203 continues to slide inside the movable spiral groove 104, when the punching head 212 quickly moves to the outer wall of the bottom of the bipolar plate, the depth of the movable spiral groove 104 will be further deepened, allowing the connecting slide bar 203 to drive the extrusion piece 207 to continue to move, and the extrusion piece 207 is allowed to resist the second extrusion bevel 220 and move to the top of the limit block 206, so that the supporting base 205 and the connecting rod 208 can move further downward. At this time, the connecting rod 208 will drive the second connecting rotating rod 214 and the first connecting rotating rod 210 to move forward. With one step of movement, the first connecting rod 210 is further retracted into the second connecting sleeve 209. At this time, the second connecting rod 214 will resist the moving block 215, so that the moving block 215 arranged inside the punching sleeve 201 extends out of the punching sleeve 201. When the moving block 215 moves to the outside of the punching sleeve 201, it is squeezed by the limiting groove provided in the punching sleeve 201, so that the second grinding block 216 inside the moving block 215 will be released from the limiting groove, thereby extending out of the moving block 215. This arrangement is to allow the second grinding block 216 to be reset by the rotation of the punching sleeve 201 after extending out of the punching sleeve 201, so as to effectively complete the grinding effect on the outer edge of the bottom of the punching hole of the bipolar plate.

[0054] It should be noted that, on the one hand, the moving block 215 is slidably arranged inside the third slide groove 224 through the corresponding slide rod, and the third slide groove 224 is opened on the surface of the punching head 212. This arrangement allows the moving block 215 to move stably to avoid deviation. At the same time, a third spring 218 is also arranged between the two moving blocks 215, and the third spring 218 is arranged to allow the subsequent moving block 215 to be quickly reset.

[0055] On the other hand, since a reset extrusion slope is provided on the surface of the second grinding block 216 on one side away from the moving block 215, the reset extrusion slope allows the moving block 215 to be reset and moved outside the punching head 212. At this time, the end of the slope on the second grinding block 216 is still located inside the limiting hole 226, which facilitates the subsequent resetting extrusion slope to be retracted into the punching sleeve 201, so that the second grinding block 216 can be reset smoothly. As the punching sleeve 201 continues to move upward, the second grinding block 216 will rotate and grind the irregular burrs on the bottom surface of the bipolar plate caused by stamping, thereby improving the punching and grinding effect of the bipolar plate. As the punching sleeve 201 drives the moving block 215 to move upward, the second grinding block 216 will resist the bottom of the bipolar plate, thereby allowing the second grinding block 216 to compress the second spring 217, so that the second grinding block 216 can normally grind the burrs on the bottom surface of the bipolar plate. When the second grinding block 216 has not retracted to the maximum position, the depth of the moving spiral groove 104 will gradually become shallower, thereby allowing the connecting slide rod 203 to drive the extrusion piece 207 to gradually reset, so that the supporting base 205, the moving block 215 and the second grinding block 216 can be retracted into the punching sleeve 201, allowing the punching sleeve 201 to slide out of the bipolar plate smoothly.

[0056] It should be noted that in order to ensure the stability of bipolar plate stamping and resetting, technical personnel in this field can use positioning equipment to position the bipolar plates. The positioning equipment is a prior art and can be an electric telescopic rod with a clamping function. Technical personnel in this field can also select it according to actual needs.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A punching device for bipolar plate processing, comprising a positioning table (1) and a punching assembly (2), characterized in that: The positioning platform (1) is used to position and fix the bipolar plate, and a plurality of groups of first positioning members (101) are fixedly arranged at the outer edge of the top of the positioning platform (1), a first connecting sleeve (102) is fixedly arranged on each group of first positioning members (101), and a punching sleeve (201) in the punching assembly (2) is arranged inside the first connecting sleeve (102), and a punching head (212) is fixedly connected to the bottom of the punching sleeve (201), and the punching head (212) is used to punch holes in the bipolar plate; A movable spiral groove (104) is also provided on the inner wall of the first connecting sleeve (102), the movable spiral groove (104) and the movable straight groove (103) are connected, the movable straight groove (103) is provided on the inner wall of the first connecting sleeve (102), a limit flap (105) is provided at the bottom end of the movable straight groove (103) through rotation of a corresponding rotating rod and a torsion spring, and a limit flap (105) is provided at the top end of the movable spiral groove (104) through rotation of a corresponding rotating rod and a torsion spring.

2. A punching device for bipolar plate processing according to claim 1, characterized in that: The punching sleeve (201) has an accommodating chamber (221) formed therein, and a supporting base (205) is movably provided inside the accommodating chamber (221). The supporting base (205) is slidably provided inside a second slide groove (223) via a corresponding slide rod. The second slide groove (223) is provided on the inner wall of the accommodating chamber (221). A limit block (206) is also fixedly provided on the top of the supporting base (205). A first extrusion inclined surface (219) and a second extrusion inclined surface (220) are respectively provided on the limit block (206).

3. A punching device for bipolar plate processing according to claim 2, characterized in that: An extrusion piece (207) is also provided on one side of the limit block (206), the extrusion piece (207) is in contact with the first extrusion inclined surface (219), and the extrusion piece (207) is slidably arranged inside the first sliding groove (222) via a corresponding sliding rod.

4. A punching device for bipolar plate processing according to claim 3, characterized in that: The first sliding groove (222) is also provided on the inner wall of the accommodating cavity (221), and a surface of one side of the extrusion member (207) close to the limit block (206) is also fixedly connected to one end of the connecting sliding rod (203).

5. A punching device for bipolar plate processing according to claim 4, characterized in that: The other end of the connecting slide rod (203) passes through the punching sleeve (201), and the other end of the connecting slide rod (203) is slidably arranged inside the movable straight groove (103) through a corresponding ball bearing.

6. A punching device for bipolar plate processing according to claim 2, characterized in that: The bottom of the supporting base (205) is fixedly connected with a connecting rod (208), and the connecting rod (208) is also slidably arranged in the second sliding groove (223) through a corresponding sliding rod. Two groups of second connecting sleeves (209) are symmetrically arranged on the connecting rod (208), and the second connecting sleeves (209) are rotatably arranged in the connecting rod (208) through a corresponding rotating rod. A first connecting rotating rod (210) is also slidably arranged in the interior of the second connecting sleeve (209).

7. A punching device for bipolar plate processing according to claim 6, characterized in that: One end of the first connecting rotating rod (210) away from the second connecting sleeve (209) is rotatably arranged on the corresponding first grinding block (204) through the corresponding rotating rod, and a first spring (211) is also arranged between the first connecting rotating rod (210) and the second connecting sleeve (209).

8. The punching device for bipolar plate processing according to claim 1, characterized in that: The punching head (212) is also symmetrically provided with moving blocks (215), and the moving blocks (215) are slidably arranged inside a third sliding groove (224) through corresponding sliding rods. The third sliding groove (224) is opened on the top surface of the punching head (212), and a third spring (218) is also arranged between the two moving blocks (215).

9. A punching device for bipolar plate processing according to claim 8, characterized in that: The moving block (215) is also provided with a sliding cavity (225), one end of a second connecting rotating rod (214) is slidably arranged inside the sliding cavity (225), and the other end of the second connecting rotating rod (214) is rotatably arranged on the connecting rod (208), and a second grinding block (216) is also movably arranged on the moving block (215), a second spring (217) is arranged between the second grinding block (216) and the moving block (215), and a limiting hole (226) is also provided on the surface of the punching sleeve (201) corresponding to the shape of the moving block (215).

10. The punching device for bipolar plate processing according to claim 1, characterized in that: A driving cylinder (202) is also provided above the punching sleeve (201); the driving cylinder (202) is fixedly arranged between two second positioning members (106); the second positioning members (106) are fixedly arranged on the corresponding first positioning members (101); the driving cylinder (202) is fixedly connected to the extrusion plate (213) via the corresponding output end; the extrusion plate (213) is arranged inside the accommodating cavity (221); and the extrusion plate (213) is also slidably arranged on the top inner wall of the accommodating cavity (221) via the corresponding ball bearings.

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