Buckle type battery cell tab leveling device

Abstract

The buckle type battery cell tab leveling device comprises a machine base, a material carrying assembly and a leveling assembly, the material carrying assembly comprises a material carrying seat, a material carrying jig, a jacking driving piece and a plurality of rotating pieces, the material carrying seat is arranged on the machine base, the material carrying jig is detachably arranged on the material carrying seat, a plurality of material grooves used for containing battery cells are formed in the material carrying jig, and the jacking driving piece is arranged on the material carrying seat. The jacking driving part is arranged on the machine base, all the rotating parts are arranged on the jacking driving part, the leveling assembly comprises a leveling driving part, a lifting seat, an industrial camera, two side pressing driving parts and two side pressing blocks, the leveling driving part is arranged on the machine base, the lifting seat is arranged on the machine base in a sliding mode, and the lifting seat is connected with an output shaft of the leveling driving part; the industrial camera is arranged on the side face, close to the loading jig, of the lifting base, the two side pressing driving pieces are arranged on the lifting base, the two side pressing blocks are arranged on the lifting base in a sliding mode, and the two side pressing driving pieces are used for driving the two side pressing blocks to abut against each other or be away from each other.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a button cell tab flattening device. Background Art

[0002] A button cell refers to the core structure of a button battery. One of the existing structures of a button cell is a wound core structure formed by sequentially and alternately laminating a positive electrode sheet, a negative electrode sheet, and two separator films and then winding them. The positive tab on the positive electrode sheet and the negative tab on the negative electrode sheet are respectively located on opposite sides of the same end face of the wound core structure.

[0003] The wound core needs to be bagged, which means placing the core between two aluminum-plastic films, then encapsulating the aluminum-plastic films to form a single-opening structure, and then injecting electrolyte into the single opening. From the completion of winding to the bagging step, since the tabs are soft structures, they are prone to bending problems. Therefore, the tabs need to be flattened before bagging.

[0004] However, as the size of button cells gets smaller and smaller, currently, the flattening of button cell tabs mainly relies on manual operation by workers. However, the manual flattening efficiency is too low. Especially because of the small size of button cells, it greatly increases the operation difficulty for workers. Therefore, to solve the above deficiencies, the button cell tab flattening device of this application is proposed. Summary of the Utility Model

[0005] An object of the utility model is to overcome the deficiencies in the prior art and provide a button cell tab flattening device that can automatically flatten the tabs of multiple button cells simultaneously.

[0006] The object of the utility model is achieved by the following technical solutions:

[0007] A button cell tab flattening device includes:

[0008] A machine base;

[0009] A loading component, the loading component includes a loading base, a loading fixture, a lifting driving member, and a plurality of rotating members. The loading base is arranged on the machine base. The loading fixture is detachably arranged on the loading base. A plurality of material grooves for receiving the cells are formed on the loading fixture. The lifting driving member is arranged on the machine base. Each rotating member is arranged on the lifting driving member, and each rotating member is aligned with each material groove respectively. When the lifting driving member drives each rotating member to pass through each material groove respectively, each rotating member can jack up the cell in each material groove respectively, and the rotating member is used to drive the cell to rotate; and

[0010] Leveling assembly, the leveling assembly includes a leveling driving member, a lifting seat, an industrial camera, two side pressing driving members and two side pressing blocks. The leveling driving member is arranged on the machine base. The lifting seat is slidably arranged on the machine base, and the lifting seat is connected to the output shaft of the leveling driving member. And the lifting seat is located above the loading fixture. The industrial camera is arranged on one side surface of the lifting seat close to the loading fixture. The two side pressing driving members are both arranged on the lifting seat. The two side pressing blocks are respectively slidably arranged on the lifting seat, and the two side pressing blocks are respectively connected to the output shafts of the two side pressing driving members. The two side pressing driving members are used to drive the two side pressing blocks to abut against each other or move away from each other respectively.

[0011] Optionally, the jacking driving member includes a jacking cylinder and a jacking plate. The jacking plate is slidably arranged on the loading seat along the vertical direction. The jacking cylinder is arranged on the machine base, and the output shaft of the jacking cylinder is connected to the jacking plate. Each of the rotating members is arranged on the jacking plate.

[0012] Optionally, the rotating member includes a rotating motor and a rotating rod. The rotating motor is arranged on the jacking plate. The rotating rod passes through the loading seat, and the rotating rod is connected to the output shaft of the rotating motor.

[0013] Optionally, a loading groove is formed on the loading seat. A plurality of guide holes are formed on the inner bottom wall of the loading groove. Each of the rotating rods respectively passes through each of the guide holes. The loading groove is used to receive the loading fixture so that each of the guide holes corresponds to each of the material grooves in one-to-one correspondence.

[0014] Optionally, the loading fixture includes a loading plate and two inserting blocks. The two inserting blocks are respectively arranged at both ends of the loading plate. Each of the material grooves is located on the loading plate. A through hole is formed on the inner bottom wall of each of the material grooves. Each of the through holes corresponds to each of the guide holes in one-to-one correspondence.

[0015] Optionally, the loading assembly further includes two positioning members. The two positioning members are respectively arranged at both ends of the loading seat. The two positioning members are used to respectively clamp the two inserting blocks.

[0016] Optionally, the positioning member includes a clamping seat, a clamping column and a spring. The clamping seat is arranged on the side wall of the loading seat. A jack is formed on the clamping seat and is adapted to the inserting block. The clamping column is slidably arranged in the clamping seat. The spring abuts against the clamping column and the clamping seat respectively, so that one end of the clamping column extends into the jack to clamp the inserting block.

[0017] Optionally, the side pressing block includes a scraping plate, a connecting plate, and two sliding plates. The two sliding plates are respectively slidably disposed on the upper and lower side surfaces of the lifting seat. The two ends of the connecting plate are respectively connected to the two sliding plates, and the connecting plate is connected to the output shaft of the side pressing driving member. The scraping plate is disposed on one of the sliding plates close to the material loading fixture.

[0018] Optionally, a chamfer portion is respectively formed on one side surface of the two scraping plates away from each other.

[0019] Optionally, the lifting seat includes a seat body and a plurality of guiding columns. The seat body is connected to the output shaft of the leveling driving member. One end of each guiding column is connected to the seat body, and the other end of each guiding column penetrates through the machine base.

[0020] Compared with the prior art, the present utility model has at least the following advantages:

[0021] The positions of the battery cells in the material loading fixture are detected by photographing through an industrial camera, and then the posture of each battery cell is adjusted by the jacking driving member in cooperation with the rotating member to ensure that the positive electrode tabs and the negative electrode tabs of each battery cell respectively face both sides of the side pressing block. Then, the leveling driving member drives the two side pressing blocks to descend between the positive electrode tab and the negative electrode tab of the battery cell, and then the side pressing driving member drives the side pressing block to press and level the positive electrode tab / negative electrode tab. At the same time, the electrode tabs of multiple battery cells are leveled, so that the leveling efficiency can be improved and the leveling effect on the electrode tabs of the battery cells can be improved. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained according to these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of a button cell electrode tab leveling device according to an embodiment of the present utility model;

[0024] Figure 2 It is a partial structural diagram of a material loading assembly according to an embodiment of the present utility model;

[0025] Figure 3 For Figure 2 The cross-sectional structural diagram of the shown material loading assembly;

[0026] Figure 4 It is a schematic structural diagram of a material loading fixture according to an embodiment of the present utility model;

[0027] Figure 5 ForFigure 3 Schematic diagram of the enlarged structure of part A;

[0028] Figure 6 Schematic diagram of the structure of the leveling assembly according to an embodiment of the present utility model;

[0029] Figure 7 is Figure 6 front view of the leveling assembly shown;

[0030] Figure 8 is Figure 6 schematic diagram of the sectional structure of the leveling assembly shown;

[0031] Figure 9 is Figure 6 schematic diagram of the sectional structure of another state of the leveling assembly shown.

[0032] Explanation of reference numerals:

[0033] 10. Button cell tab leveling device; 100. Machine base; 200. Loading assembly; 300. Leveling assembly; 210. Loading seat; 220. Loading fixture; 230. Lifting driving member; 240. Rotating member; 2211. Material groove; 310. Leveling driving member; 320. Lifting seat; 330. Industrial camera; 340. Side pressure driving member; 350. Side pressure block; 231. Lifting cylinder; 232. Lifting plate; 241. Rotating motor; 242. Rotating rod; 211. Loading groove; 212. Guide hole; 221. Loading plate; 222. Insert block; 2212. Through hole; 250. Positioning member; 251. Clamping seat; 252. Clamping post; 253. Spring; 2511. Insertion hole; 351. Scraper; 352. Connecting plate; 353. Slide plate; 3511. Chamfered portion; 321. Seat body; 322. Guide post; 110. Support frame. Detailed implementation manners

[0034] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings.

[0035] As Figures 1 to 9As shown in the figure, a button cell tab flattening device 10 includes a machine base 100, a material loading assembly 200, and a flattening assembly 300. The material loading assembly 200 includes a material loading base 210, a material loading fixture 220, a jacking driving member 230, and a plurality of rotating members 240. The material loading base 210 is disposed on the machine base 100. The material loading fixture 220 is detachably disposed on the material loading base 210. A plurality of material grooves 2211 for accommodating the battery cells are formed in the material loading fixture 220. The jacking driving member 230 is disposed on the machine base 100. Each rotating member 240 is disposed on the jacking driving member 230, and each rotating member 240 is aligned with each material groove 2211 respectively. When the jacking driving member 230 drives each rotating member 240 to pass through each material groove 2211 respectively, each rotating member 240 is used to jack up the battery cell in each material groove 2211. The rotating member 240 is used to drive the battery cell to rotate. The flattening assembly 300 includes a flattening driving member 310, a lifting seat 320, an industrial camera 330, two side pressing driving members 340, and two side pressing blocks 350. The flattening driving member 310 is disposed on the machine base 100. The lifting seat 320 is slidably disposed on the machine base 100, and the lifting seat 320 is connected to the output shaft of the flattening driving member 310. The lifting seat 320 is located above the material loading fixture 220. The industrial camera 330 is disposed on a side surface of the lifting seat 320 close to the material loading fixture 220. The two side pressing driving members 340 are both disposed on the lifting seat 320. The two side pressing blocks 350 are respectively slidably disposed on the lifting seat 320, and the two side pressing blocks 350 are respectively connected to the output shafts of the two side pressing driving members 340. The two side pressing driving members 340 are used to drive the two side pressing blocks 350 to abut against each other or move away from each other respectively.

[0036] It should be noted that the material-loading fixture 220 is placed on the material-loading seat 210, and each material slot 2211 in the material-loading fixture 220 is loaded with a battery cell. Since the orientations of the positive tabs and negative tabs of each battery cell are different, first, an industrial camera 330 takes pictures of each battery cell on the material-loading fixture 220 for detection. Then, the lifting driving member 230 drives each rotating member 240 to rise, so that each rotating member 240 passes through each material slot 2211 to lift each battery cell away from the material slot 2211. Then, the rotating member 240 drives each corresponding battery cell to rotate, so that the positive tab and negative tab of the battery cell are respectively located on both sides of the side pressing block 350. In this way, after the battery cell is positioned by the cooperation of the lifting driving member 230 and the rotating member 240, the lifting driving member 230 drives the rotating member 240 to descend, so that each battery cell falls back into each material slot 2211. Then, the leveling driving member 310 drives the lifting seat 320 to descend, so that the two mutually abutted side pressing blocks 350 descend to between the positive tab and negative tab of the battery cell. Then, the two side pressing driving members 340 respectively drive the two side pressing blocks 350 to slide horizontally, so that the side pressing block 350 presses the positive tab / negative tab of the battery cell on the material-loading seat 210 for leveling operation. In this way, compared with the existing manual leveling method by workers, in this application, the industrial camera 330 takes pictures of the battery cells on the material-loading fixture 220 to detect the positions, and then the lifting driving member 230 cooperates with the rotating member 240 to adjust the postures of each battery cell to ensure that the positive tab and negative tab of each battery cell respectively face both sides of the side pressing block 350. Then, the leveling driving member 310 drives the two side pressing blocks 350 to descend to between the positive tab and negative tab of the battery cell, and then the side pressing driving member 340 drives the side pressing block 350 to press and level the positive tab / negative tab, and at the same time, level the tabs of multiple battery cells. Therefore, the leveling efficiency can be improved, and the leveling effect on the tabs of the battery cells can be improved.

[0037] As Figures 1 to 3 shown, in one embodiment, the lifting driving member 230 includes a lifting cylinder 231 and a lifting plate 232. The lifting plate 232 is slidably arranged on the material-loading seat 210 along the vertical direction. The lifting cylinder 231 is arranged on the machine base 100, and the output shaft of the lifting cylinder 231 is connected to the lifting plate 232. Each rotating member 240 is arranged on the lifting plate 232.

[0038] It should be noted that the lifting cylinder 231 drives the lifting plate 232 to perform lifting motion. Each rotating member 240 is installed on the lifting plate 232 at intervals. In this way, when the lifting plate 232 rises, each rotating member 240 is respectively lifted from each material slot 2211 to lift the battery cell away from the material slot 2211. Thus, the rotating member 240 can drive the battery cell to rotate to adjust the orientations of the positive tab and negative tab of the battery cell.

[0039] As Figure 2 and Figure 3As shown, in one embodiment, the rotating member 240 includes a rotating motor 241 and a rotating rod 242. The rotating motor 241 is disposed on the lifting plate 232. The rotating rod 242 passes through the material loading base 210 and is connected to the output shaft of the rotating motor 241.

[0040] It should be noted that a plurality of linear bearings are installed on the material loading base 210, so that the rotating rod 242 passes through the linear bearings, enabling the rotating rod 242 to rotate and slide relative to the material loading base 210. In this way, when the rotating motor 241 drives the rotating rod 242 to rotate and the lifting cylinder 231 drives the lifting plate 232 to move up and down, the rotating rod 242 can move up and down relative to the material loading base 210.

[0041] As Figure 2 shown, in one embodiment, a loading groove 211 is formed on the material loading base 210. A plurality of guide holes 212 are formed on the inner bottom wall of the loading groove 211. Each rotating rod 242 passes through each guide hole 212. The loading groove 211 is used to receive the material loading fixture 220, so that each guide hole 212 is aligned with each material slot 2211 one by one.

[0042] It should be noted that, for example, a linear bearing is installed in each guide hole 212, so that the rotating rod 242 passes through the linear bearing. In this way, when the material loading fixture 220 is placed in the loading groove 211, the material slots 2211 of the material loading fixture 220 can be aligned with each guide hole 212, that is, aligned with each rotating rod 242. In one embodiment, the diameter of the rotating rod 242 is smaller than the inner diameter of the material slot 2211, and the difference between the diameter of the rotating rod 242 and the material slot 2211 is 3 mm to 4 mm.

[0043] As Figure 4 shown, in one embodiment, the material loading fixture 220 includes a loading plate 221 and two insertion blocks 222. The two insertion blocks 222 are respectively disposed at both ends of the loading plate 221. Each material slot 2211 is located on the loading plate 221. A through hole 2212 is formed on the inner bottom wall of each material slot 2211. Each through hole 2212 is aligned with each guide hole 212 one by one.

[0044] It should be noted that the loading plate 221 and the insertion blocks 222 are of an integrally formed structure. The material slots 2211 are equidistantly distributed on the loading plate 221, and a through hole 2212 is formed on the inner bottom wall of each material slot 2211, so that each through hole 2212 is aligned with each rotating rod 242 respectively. In this way, when the rotating rod 242 rises, it can pass through the through hole 2212 to lift the battery cell in the material slot 2211. It should be noted that the material loading fixture 220 can be integrally placed in the loading groove 211 or taken out from the loading groove 211. Therefore, by transferring the material loading fixture 220, a plurality of battery cells can be transported simultaneously, improving the loading and unloading efficiency of the battery cells, and thus improving the leveling efficiency of the battery cell tabs.

[0045] As Figure 2 and Figure 3 shown, in one embodiment, the material loading assembly 200 further includes two clamping members 250 which are respectively arranged at two ends of the material loading base 210, and the two clamping members 250 are respectively used for clamping two insertion blocks 222. It should be noted that the clamping members 250 are used to tightly clamp the two insertion blocks 222, so that the material loading fixture 220 is reliably fixed on the material loading base 210.

[0046] As Figure 2 and Figure 5 shown, in one embodiment, the clamping member 250 includes a clamping seat 251, a clamping post 252 and a spring 253. The clamping seat 251 is arranged on the side wall of the material loading base 210. A jack 2511 adapted to the insertion block 222 is formed on the clamping seat 251. The clamping post 252 is slidably arranged in the clamping seat 251. The spring 253 abuts against the clamping post 252 and the clamping seat 251 respectively, so that one end of the clamping post 252 extends into the jack 2511 to clamp the insertion block 222.

[0047] It should be noted that the clamping seat 251 is installed on the material loading base 210, and the clamping post 252 is horizontally slidably installed in the clamping seat 251. For example, a sliding groove is formed horizontally in the clamping seat 251, so that the clamping post 252 can slide along the sliding groove. The spring 253 abuts against the clamping post 252 and the clamping seat 251 respectively. Under the elastic thrust of the spring 253, one end of the clamping post 252 extends into the jack 2511 to clamp the insertion block 222. For example, a clamping groove is formed on the side wall of the insertion block 222, and one end of the clamping post 252 is accommodated in the clamping groove, so that the clamping post 252 clamps the insertion block 222.

[0048] As Figures 6 to 9 shown, in one embodiment, the side pressing block 350 includes a scraping plate 351, a connecting plate 352 and two sliding plates 353. The two sliding plates 353 are respectively slidably arranged on the upper and lower side surfaces of the lifting seat 320. The two ends of the connecting plate 352 are respectively connected to the two sliding plates 353, and the connecting plate 352 is connected to the output shaft of the side pressing driving member 340. The scraping plate 351 is arranged on one sliding plate 353 close to the material loading fixture 220.

[0049] It should be noted that, for example, the two sliding plates 353 are respectively installed on the upper side surface and the lower side surface of the lifting seat 320 through a slide rail structure, and then the two sliding plates 353 are connected by the connecting plate 352, so that the two sliding plates 353 slide synchronously. The side pressing driving member 340 is installed on the lifting seat 320, and the output shaft of the side pressing driving member 340 is connected to the connecting plate 352. The scraping plate 351 is installed on the lower sliding plate 353. In this way, the side pressing driving member 340 drives the scraping plate 351 to slide horizontally to press and flatten the electrode tabs of the battery cell.

[0050] As Figure 6As shown, in one embodiment, chamfered portions 3511 are respectively formed on the sides of the two squeegees 351 facing away from each other.

[0051] In this way, when the two squeegees 351 are in contact with each other, the chamfered portions 3511 of the two squeegees 351 form a conical structure, so that the squeegee 351 can smoothly descend between the positive electrode tab and the negative electrode tab of the battery cell.

[0052] As Figure 1 As shown, in one embodiment, the lifting seat 320 includes a seat body 321 and a plurality of guide posts 322. The seat body 321 is connected to the output shaft of the leveling driving member 310. One end of each guide post 322 is connected to the seat body 321, and the other end of each guide post 322 passes through the machine base 100.

[0053] It should be noted that, for the convenience of installing the leveling assembly 300, a support frame 110 is installed on the machine base 100. The leveling driving member 310 is installed on the support frame 110. Each guide post 322 passes through the support frame 110 through a linear bearing, and the ends of the guide posts 322 are fixedly connected to the seat body 321. In this way, it can be ensured that the seat body 321 is stably driven by the leveling driving member 310 to move up and down.

[0054] In one embodiment, the leveling driving member 310 and the side pressing driving member 340 are both linear driving sources, for example, both are cylinders.

[0055] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. The installation / fixing / setting mentioned in the present invention can be understood as including but not limited to locking and fixing with screws / screws, welding unless otherwise specifically defined. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A button-type battery cell tab leveling device, characterized in that: include: Machine base; A material carrier assembly, the material carrier assembly comprising a material carrier seat, a material carrier fixture, a lifting drive member, and a plurality of rotating members, the material carrier seat is arranged on the machine base, the material carrier fixture is detachably arranged on the material carrier seat, a plurality of material slots for accommodating battery cells are provided on the material carrier fixture, the lifting drive member is arranged on the machine base, each of the rotating members is arranged on the lifting drive member, and each of the rotating members is respectively aligned with each of the material slots, the lifting drive member is used to drive each of the rotating members to pass through each of the material slots respectively, so that each of the rotating members lifts up the battery cells in each of the material slots respectively, and the rotating member is used to drive the battery cells to rotate; and A leveling assembly, the leveling assembly includes a leveling drive member, a lifting seat, an industrial camera, two side pressure drives and two side pressure blocks, the leveling drive member is arranged on the machine base, the lifting seat is slidably arranged on the machine base, and the lifting seat is connected to the output shaft of the leveling drive member, and the lifting seat is located above the material loading fixture, the industrial camera is arranged on a side surface of the lifting seat close to the material loading fixture, the two side pressure drives are both arranged on the lifting seat, the two side pressure blocks are respectively slidably arranged on the lifting seat, and the two side pressure blocks are respectively connected to the output shafts of the two side pressure drives, and the two side pressure drives are used to respectively drive the two side pressure blocks to abut against or move away from each other.

2. The button-type battery cell tab leveling device according to claim 1, characterized in that: The lifting drive component includes a lifting cylinder and a lifting plate. The lifting plate is slidably arranged on the carrier along the vertical direction. The lifting cylinder is arranged on the machine base, and the output shaft of the lifting cylinder is connected to the lifting plate. Each of the rotating components is arranged on the lifting plate.

3. The button-type battery cell tab leveling device according to claim 2, characterized in that: The rotating member comprises a rotating motor and a rotating rod, wherein the rotating motor is arranged on the lifting plate, the rotating rod is penetrated through the material carrier, and the rotating rod is connected to the output shaft of the rotating motor.

4. The button-type battery cell tab leveling device according to claim 3, characterized in that: A loading slot is provided on the loading seat, a plurality of guide holes are provided on the inner bottom wall of the loading slot, and each rotating rod is respectively passed through each guide hole. The loading slot is used to accommodate the loading fixture so that each guide hole corresponds one by one to be aligned with each material slot.

5. The button-type battery cell tab leveling device according to claim 4, characterized in that: The material loading fixture includes a carrier plate and two insert blocks, the two insert blocks are respectively arranged at the two ends of the carrier plate, each material trough is located on the carrier plate, and a through hole is provided on the inner bottom wall of each material trough, and each through hole is aligned with each guide hole one by one.

6. The button-type battery cell tab leveling device according to claim 5, characterized in that: The material loading assembly further comprises two clamping pieces, which are respectively arranged at two ends of the material loading seat, and are used to clamp the two inserting blocks respectively.

7. The button-type battery cell tab leveling device according to claim 6, characterized in that: The clamping member includes a clamping seat, a clamping column and a spring. The clamping seat is arranged on the side wall of the loading seat. The clamping seat is provided with a socket adapted to the plug block. The clamping column is slidably arranged in the clamping seat. The spring is respectively in contact with the clamping column and the clamping seat so that one end of the clamping column extends into the socket to clamp the plug block.

8. The button-type battery cell tab leveling device according to claim 1, characterized in that: The side pressure block includes a scraper, a connecting plate and two slide plates. The two slide plates are slidably arranged on the upper and lower side surfaces of the lifting seat respectively. The two ends of the connecting plate are respectively connected to the two slide plates, and the connecting plate is connected to the output shaft of the side pressure driving member. The scraper is arranged on one of the slide plates close to the loading fixture.

9. The button-type battery cell tab leveling device according to claim 8, characterized in that: A chamfered portion is respectively provided on one side surface of the two scrapers which are away from each other.

10. The button-type battery cell tab leveling device according to claim 1, characterized in that: The lifting seat includes a seat body and a plurality of guide columns. The seat body is connected to the output shaft of the leveling driving member. One end of each guide column is connected to the seat body, and the other end of each guide column is penetrated through the machine base.

Images