CN115256966A

CN115256966A - Automatic bipolar plate processing equipment for fuel cell and pressing mechanism thereof

Info

Publication number: CN115256966A
Application number: CN202211188982.2A
Authority: CN
Inventors: 席海山; 阮驰; 刘家辉; 王浩; 郭启
Original assignee: Hunan Longshen Hydrogen Energy Technology Co ltd; Foshan Longshen Robot Co Ltd
Current assignee: Hunan Longshen Hydrogen Energy Technology Co ltd; Foshan Longshen Robot Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-11-01
Anticipated expiration: 2042-09-28
Also published as: CN115256966B

Abstract

The application belongs to the technical field of fuel cells and provides a pressing mechanism which comprises a turning plate, a pressing seat, a jacking device and a locking piece, wherein the pressing seat comprises an elastic guide piece, an upper shaped plate, a profiling plate, a lower shaped plate and a jacking plate, and the upper shaped plate and the lower shaped plate are spliced to form a movable cavity; the profiling plate is positioned in the movable cavity, a boss is arranged on the profiling plate, a sleeve joint which is sleeved with the boss is arranged on the upper shaping plate, and the edge of the boss is surrounded from the periphery of the upper shaping plate around the surrounding edge of the sleeve joint; the jacking plate is provided with a guide post which penetrates through the guide hole and is abutted with the profiling plate; the elastic guide piece is arranged in a movable gap between the lower plate and the jacking plate; the jacking device is connected with the pressing seat and drives the pressing seat to press against the turnover plate; the locking piece is fixed on the turning plate which is turned over to the pressing seat. The application provides a fuel cell bipolar plate automatic processing equipment with the pressing mechanism. The application solves the technical problems of poor bonding and poor pressing effect in the processing of the bipolar plate bonding sealing ring in the prior art.

Description

Automatic bipolar plate processing equipment for fuel cell and pressing mechanism thereof

Technical Field

The application belongs to the technical field of fuel cells, and particularly relates to bipolar plate automatic processing equipment of a fuel cell and a pressing mechanism thereof.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, is not limited by Carnot cycle effect, and has high efficiency. The fuel cell uses fuel and oxygen as raw materials, has no mechanical transmission parts, discharges few harmful gases and has long service life. Therefore, the fuel cell is gradually popularized to the application of daily facilities.

Among them, the bipolar plate is also called a current collecting plate, which is one of the important components of the fuel cell. The bipolar plates are used to separate the fuel from the oxidant, prevent gas permeation, collect and conduct current. The flow channels on the bipolar plate can uniformly distribute gas to the reaction layer of the electrode for electrode reaction. The bipolar plate can also exhaust heat and keep the temperature field of the battery uniform.

As shown in fig. 1, in the production process of a bipolar plate S, the bipolar plate S has an annular groove S1, and a seal ring P needs to be bonded to the annular groove S1. Because the bipolar plate is small and thin, the fixing of the sealing ring on the annular groove requires very precise machining operations, at least by the machining procedures of dispensing and pressing.

For the pressing process, the fixing is currently performed through a jig, and the processing is realized through a pressing mode of a pressing device. On the tool of prior art, generally be equipped with the cell body that is used for placing the sealing washer. Because the thickness of the sealing ring is very thin, the depth of the groove body cannot be too deep, otherwise, the material is not easy to discharge. Too deep cell body makes the sealing washer put the back and will inlay the inslot completely in vivo, leads to the ring body of sealing washer can't laminate with the bipolar plate, leads to bonding badly. However, the depth of the groove body is not enough, and the sealing ring cannot be positioned, so that the sealing ring is easy to shift before being pressed and adhered, the adhesion is inaccurate, and the yield is low.

In addition, in the pressing process, when the sealing ring is attached to the annular groove of the bipolar plate, the attaching pressure is easily dispersed to the jig after the sealing ring is deformed, so that the attaching pressure applied to the sealing ring is very small, the stress is not uniform, and the pressing effect is poor.

Disclosure of Invention

The embodiment of the application aims to provide automatic bipolar plate processing equipment of a fuel cell and a pressing mechanism thereof, so as to solve the technical problems of poor bonding and poor pressing effect in the processing of a bipolar plate bonding sealing ring in the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the utility model provides a pressing mechanism for bond the sealing washer on the bipolar plate of rubberizing, pressing mechanism includes:

the turning plate is used for placing the bipolar plate;

the pressing seat comprises an elastic guide piece, an upper shaped plate, a profiling plate, a lower shaped plate and a jacking plate which are sequentially arranged from top to bottom, the bottom of the upper shaped plate is provided with a limiting groove with a downward opening, and the upper shaped plate and the lower shaped plate are spliced up and down to form a movable cavity;

the profiling plate is positioned in the movable cavity, a boss for placing a sealing ring is arranged on the profiling plate, and the edge of the boss corresponds to the position of a gluing part on the bipolar plate; the upper shaping plate is provided with a socket which is sleeved with the boss, and the upper shaping plate surrounds the surrounding edge of the socket to surround the edge of the boss from the periphery;

the lower shaping plate is provided with a guide hole, and the jacking plate is provided with a guide post which penetrates through the guide hole and is abutted with the profiling plate;

the lower plate and the jacking plate are arranged at intervals up and down to form a movable gap, and the elastic guide piece is arranged in the movable gap;

the jacking device is connected with the pressing seat and drives the pressing seat to abut against the turning plate;

the locking piece is used for fixing the turning plate turned over to the pressing seat.

The application provides a pressing mechanism's beneficial effect lies in: compared with the prior art, the problem that the sealing ring is poor in bonding and poor in pressing effect is solved. In the pressing mechanism of this application, the pressfitting seat includes elasticity guide and from last upper plate, profile plate, lower shaped plate and the jacking board that down sets gradually.

Firstly, the profiling plate is provided with a boss, and the edge of the boss corresponds to the position of the gluing part on the bipolar plate, so that the sealing ring is placed on the edge of the boss and can be automatically aligned with the gluing part on the bipolar plate.

Secondly, the boss on the shape-imitating plate is sleeved on the sleeve joint on the upper shape plate, and the sealing ring placed at the edge of the boss is limited from the periphery by utilizing the surrounding edge of the upper shape plate surrounding the sleeve joint, so that the sealing ring is effectively prevented from easily shifting before being pressed and adhered.

Thirdly, the upper shaping plate and the lower shaping plate are spliced to form a movable cavity, the profiling plate is arranged in the movable cavity, the profiling plate is abutted against the jacking plate through a guide pillar, and an elastic guide part is arranged between the lower shaping plate and the jacking plate. Under the cooperation of the structure, in the pressing process, the jacking plate is driven by the jacking device to move upwards so as to push the profile plate to keep the sealing ring pressed against the bipolar plate on the turning plate. At the moment, the upper shaping plate is abutted against the surface of the bipolar plate outside the annular groove, and the upper shaping plate and the lower shaping plate displace downwards by using the space of the movable cavity along with the elastic contraction of the elastic guide piece; corresponding to the removal from the periphery of the seal ring placed on the ledge edge, so that the seal ring can be fully inserted into the annular groove of the bipolar plate. Therefore, the ring body of the sealing ring can be fully attached to the adhesive surface (namely the groove bottom surface of the annular groove) on the bipolar plate, and the technical problem of poor adhesion of the sealing ring is effectively solved.

Fourthly, in foretell pressfitting in-process, the elastic guide also plays fine cushioning effect, avoids the sealing washer to be supported to press easily to warp effectively and leads to the effort dispersion, ensures effectively that the stress that acts on the sealing washer is steady, and then improves the pressfitting effect.

The structure of the elastic guide part is improved, the elastic guide part comprises a guide shaft and a spring which are sleeved, a through hole which is connected with the guide shaft in a penetrating way is formed in the lower plate, the upper end of the guide shaft penetrates through the through hole and is connected with the profiling plate, and the lower end of the guide shaft is fixed on the jacking plate; the spring is pressed between the lower plate and the jacking plate. With this, order about by jacking device at whole pressfitting seat and follow up to support from down and press when turning over the board after the upset, go up the shaped plate and offset with the bipolar plate that turns over on the board, and receive and drive down the shaped plate under the reaction force and be in the same place, along with the shrink of spring, the stroke within range at the activity cavity is fallen back downwards, thereby make the sealing washer that sets up on the profile shape plate boss border can imbed completely in bipolar plate's ring channel, let the sealing washer can paste the face with the tank bottom of ring channel and fully laminate, improve the bonding effect effectively.

Optionally, the jacking plate is provided with a mounting plate, and the guide pillar is arranged on the mounting plate; still be equipped with on the mounting panel and be used for the installation the fixed slot of elastic guide, the mounting hole that is used for installing the fastener is seted up to the bottom of fixed slot, elastic guide's spring scarf joint in the fixed slot, the lower extreme of guiding axle with the mounting hole position corresponds. Therefore, the jacking plate is additionally provided with a mounting plate as a mounting part of components on the jacking plate, such as a guide column, a special structure and the like. The jacking plate is kept complete, and the structural strength of the jacking plate is effectively ensured. Wherein, the fixed slot that sets up on the mounting panel for elastic guide can fix in the fixed slot, takes place the distortion when preventing spring shrinkage effectively, avoids the removal of upper plate and lower shaped plate to take place the skew easily, leads to the glue on the rubberizing position of bipolar plate to be spilled over by the indiscriminate flow after the extrusion, the uneven condition of distribution.

The structure of a jacking device is improved, the jacking device comprises an electric cylinder and a pressure sensor, the pressure sensor is arranged on the jacking plate, and the pressure sensor is electrically connected with the electric cylinder; and a driving shaft on the electric cylinder is connected with the jacking plate, and the jacking device adjusts the acting force of the electric cylinder on the jacking plate according to the detection signal of the pressure sensor. Therefore, the pressure sensor detects the resisting pressure applied to the bipolar plate and feeds back a detection signal, so that a control center in the equipment can control the electric cylinder in time; and moreover, the starting and stopping sensitivity of the electric cylinder is utilized, so that the adjusting efficiency is effectively improved, and the pressure precision for controlling jacking is improved.

The structure of the profile plate is improved, a plurality of guide ports penetrating through the profile plate are formed in a boss of the profile plate, the plurality of guide ports are arranged in a matrix, and at least one side of each guide port is close to the edge of the boss; the lower plate is provided with a guide block protruding upwards, the guide block is arranged on the lower plate in a protruding mode, and the guide block can penetrate out of a guide port in the profiling plate. With this, the guide block of wearing out from the uide gate can carry on spacingly to placing the sealing washer on the boss border in the inboard to with last shaped plate around the surrounding edge inside and outside cooperation of socket, fix a position the sealing washer, prevent effectively that the sealing washer from just taking place the aversion easily before not pressfitting pastes, and then improve the location effect to the sealing washer. In the pressing process, the upper plate is abutted by the surface of the bipolar plate, and the upper plate and the lower plate displace downwards by utilizing the space of the movable cavity along with the elastic shrinkage of the elastic guide piece. Let the surrounding edge that is located the sealing washer periphery remove away, make simultaneously to be located the inboard guide block of sealing washer, also can move down in the guide way of profile plate along with lower shaped plate to remove away from the inboard of sealing washer, so that make in the sealing washer can imbed the ring channel of bipolar plate smoothly, improve the bonding effect effectively.

The application also provides automatic bipolar plate processing equipment of the fuel cell, which comprises a feeding mechanism, a glue dispensing mechanism, a mechanical arm and the pressing mechanism which are sequentially arranged, wherein the feeding mechanism comprises a feeding table for placing the bipolar plates; the glue dispensing mechanism comprises a three-axis glue dispensing device, and the three-axis glue dispensing device is used for gluing the bipolar plate on the feeding table; and the mechanical arm transfers the bipolar plate from the feeding table to a turning plate of the pressing mechanism. Therefore, the automatic processing equipment comprises three mechanisms of feeding, dispensing and pressing, and is sequentially arranged, so that the processing procedures of dispensing and pressing can be automatically performed on the bipolar plate, manual participation is effectively reduced, and the processing precision and the production efficiency are improved.

The structure of the feeding mechanism is improved, and the feeding mechanism further comprises a positioning acquisition device, wherein the positioning acquisition device is used for acquiring the position information of the bipolar plate placed on the feeding table; the three-axis dispensing device is used for gluing the bipolar plate according to the position information of the positioning and collecting device, so that the problems that the positions of the bipolar plate placed on the feeding table are not uniform and position deviation exists are effectively solved, and the dispensing accuracy is improved.

Optionally, a track and a driving chain connected with the feeding table are arranged between the feeding mechanism and the glue dispensing mechanism, and the driving chain drives the feeding table to move along the track, so that the feeding table can be switched between the feeding mechanism and the glue dispensing mechanism.

Optionally, the feeding mechanism further includes a bracket straddling the track, and the positioning and collecting device is disposed on the bracket. With this, utilize the material loading platform to move on the track, the setting of location collection system is on the support, can glance the overhead bipolar plate of whole material loading, and then improves the collection effect.

The structure of the dispensing mechanism is improved, the dispensing mechanism further comprises a glue cleaning device, the glue cleaning device comprises a rolling seat for installing a glue tape, and a dispensing head on the three-axis dispensing device can move to the glue tape arranged on the rolling seat. Therefore, after one round of glue dispensing operation is completed, the glue dispensing head on the three-axis glue dispensing device can be cleaned through the adhesive tape on the rolling seat, so that a new round of glue dispensing operation can be prepared, and the glue dispensing accuracy is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic view of an assembly structure of a bipolar plate and a seal ring according to an embodiment of the present disclosure;

FIG. 2 is a block diagram of an automatic bipolar plate processing apparatus for a fuel cell according to an embodiment of the present disclosure;

fig. 3 is a perspective view of an automatic processing device according to an embodiment of the present application;

fig. 4 is a perspective structural view of a pressing mechanism in the apparatus provided in the embodiment of the present application;

fig. 5 is a first exploded view of a pressing mechanism in an apparatus according to an embodiment of the present disclosure;

fig. 6 is a second exploded view of a stitching mechanism in an apparatus according to an embodiment of the present disclosure;

FIG. 7 is a sectional view of the upper and lower plates in a state of being assembled together according to an embodiment of the present disclosure;

fig. 8 is an enlarged sectional view of a part of the pressing mechanism according to the embodiment of the present disclosure;

FIG. 9 is a perspective view of a profile plate provided in accordance with an embodiment of the present application;

FIG. 10 is an enlarged view of the part A of FIG. 3;

fig. 11 is a view illustrating a state in which a flap of the pressing mechanism is turned over to the pressing base according to the embodiment of the present application;

fig. 12 is a partial cross-sectional view of a flap being flipped over onto a press-fit seat according to an embodiment of the present application;

FIG. 13 is a first enlarged view of the portion C of FIG. 12;

FIG. 14 is a second enlarged view of the portion C of FIG. 12;

FIG. 15 is a third enlarged view of the portion C of FIG. 12;

FIG. 16 is a fourth enlarged schematic view of the portion C of FIG. 12;

FIG. 17 is a perspective view of a lower plate according to an embodiment of the present application;

FIG. 18 is an enlarged view of the portion B of FIG. 11;

fig. 19 is a partial structural view of an automatic processing apparatus according to an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

100-a feeding mechanism;

200-glue dispensing mechanism; 201-glue cleaning device;

300-a robotic arm;

400-a pressing mechanism; 401-a substrate; 402-a central hole; 403-a guide tube;

1-a feeding table;

2-three-axis dispensing devices;

3-turning over the board;

4-pressing the seat;

41-elastic guide; 411-a guide shaft; 412-a spring;

42-upper shaping plate; 421-a limit groove; 422-socket; 423-surrounding edge;

43-profile plate; 431-boss; 432-edge; 433-a guide port;

44-lower shaping plate; 440-a via hole; 441-a pilot hole; 442-a guide block;

45-jacking plates; 451-guide posts; 452-a mounting plate; 453-fixed groove; 454-a mounting hole; 455-a guide bar;

5-jacking device; 51-electric cylinder; 52-a pressure sensor;

6-a locking member; 61-clasps; 62-a rotary cylinder;

71-positioning the acquisition device; 72-a scaffold; 73-a mounting frame;

81-track; 82-a drive chain;

9-rolling seat; 91-a roller; 92-driver.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The bipolar plate automatic processing equipment of the fuel cell and the pressing mechanism thereof provided by the embodiment of the application are explained in detail. In this embodiment, as shown in fig. 1, a bipolar plate S of the fuel cell has an annular groove S1 for disposing a sealing ring P, and the bipolar plate automatic processing device provided in this embodiment of the present application is used for performing a dispensing and pressing process to bond and fix the sealing ring P to the annular groove S1 of the bipolar plate S.

Referring to fig. 2 and 3 together, an automatic bipolar plate processing apparatus for a fuel cell according to an embodiment of the present invention includes: the device comprises a feeding mechanism 100, a glue dispensing mechanism 200, a mechanical arm 300 and a pressing mechanism 400.

The loading mechanism 100 includes a loading table 1 for placing bipolar plates.

The dispensing mechanism 200 includes a three-axis dispensing device 2, and the three-axis dispensing device 2 applies glue to the bipolar plate on the feeding table 1.

The robotic arm 300 transfers the bipolar plates from the loading station 1 to the bonding mechanism 400.

The pressing mechanism 400 is used for bonding a seal ring P on the glued bipolar plate.

The feeding mechanism 100, the dispensing mechanism 200, the mechanical arm 300 and the pressing mechanism 400 are sequentially arranged on the platform T of the apparatus.

It can be seen that the automatic processing equipment of this application comprises three major mechanisms of material loading, point and pressfitting and arranges in proper order, can carry out the manufacturing procedure of point and pressfitting to bipolar plate automatically, reduces artifical the participation effectively, and then improves machining precision and production efficiency.

In the embodiment of the present application, referring to fig. 4, the pressing mechanism 400 includes a turning plate 3, a pressing seat 4, a lifting device 5 and a locking member 6.

The turning plate 3 is used for placing the bipolar plate after dispensing, and the turning plate 3 can be turned over to the pressing seat 4 so that the bipolar plate covers the pressing seat 4. In the present embodiment, the bipolar plate placed on the flap 3, when the flap 3 is turned over, the glued portion of the bipolar plate will face downwards and cover the press-fit seat 4.

The jacking device 5 is connected with the pressing seat 4 and drives the pressing seat 4 to press the turnover plate 3.

The locking piece 6 is used for fixing the turning plate 3 turned over to the press seat 4.

Referring to fig. 5, 6 and 7, the press-fit seat 4 includes an elastic guiding element 41, and an upper plate 42, a cam plate 43, a lower plate 44 and a lifting plate 45 sequentially arranged from top to bottom.

Referring to fig. 7 and 8, the bottom of the upper plate 42 has a downwardly opening limit slot 421, the upper plate 42 and the lower plate 44 are vertically combined to form a movable cavity M, and the cam plate 43 is located in the movable cavity M.

Referring to fig. 8 and 9, the cam 43 has a boss 431 for placing the seal ring P, and a rim 432 of the boss 431 corresponds to the position of the glue applying portion on the bipolar plate. In this way, the seal ring P is placed on the edge 432 of the boss 431 to automatically correspond to the glued portion (i.e., the annular groove S1) of the bipolar plate S.

Referring to fig. 5, 8 and 10, the upper plate 42 has a socket 422 sleeved with the boss 431, and the upper plate 42 surrounds the edge 423 of the socket 422 and surrounds the edge 432 of the boss 431.

Referring to fig. 5, 6 and 8, the lower plate 44 has a guiding hole 441, the lifting plate 45 has a guiding post 451 passing through the guiding hole 441 and abutting against the cam plate 43, and the bottom of the lifting plate 45 is connected to the lifting device 5.

Referring to fig. 8 and 11, the lower plate 44 and the lifting plate 45 are spaced from each other vertically to form a movable gap N, and the elastic guide 41 is disposed in the movable gap N.

Compared with the prior art, the pressing mechanism 400 on the bipolar plate automatic processing equipment provided by the embodiment of the application aims at the problems of poor bonding and poor pressing effect of the sealing ring P. First, in the pressing mechanism 400 of the present application, the contour plate 43 of the pressing seat 4 has a boss 431 thereon, and an edge 432 of the boss 431 corresponds to a position of a glue applying portion on the bipolar plate, so that the seal ring P is placed on the edge 432 of the boss 431, and can be automatically aligned with the glue applying portion on the bipolar plate. As shown in fig. 12, when the bipolar plate S is turned over and closed on the upper plate 42, the seal ring P placed on the rim 432 of the projection 431 of the former plate 43 automatically corresponds to the glued portion of the bipolar plate S.

Secondly, as shown in fig. 13, the boss 431 of the cam 43 is sleeved on the socket 422 of the upper plate 42, and the peripheral edge 423 of the upper plate 42 surrounding the socket 422 is used for limiting the position of the sealing ring P placed on the edge 432 of the boss 431 from the periphery, so as to effectively prevent the sealing ring P from being easily displaced before being pressed and adhered.

Thirdly, the upper plate 42 and the lower plate 44 are assembled to form a movable cavity M, the cam 43 is disposed in the movable cavity M, the cam 43 abuts against the lifting plate 45 through the guide post 451, and the elastic guide 41 is disposed between the lower plate 44 and the lifting plate 45. With the above structure, referring to fig. 14, 15 and 16 (the arrow in fig. 14 is the retracting direction after the upper plate 42 contacts the bipolar plate S), the lifting plate 45 is driven by the lifting device 5 to move upward to push the cam plate 43 to keep the sealing ring P pressed against the bipolar plate on the turning plate 3 during the pressing process. At this time, the upper plate 42 abuts against the plate surface of the bipolar plate except the plate surface surrounding the annular groove S1, and the upper plate 42 and the lower plate 44 are displaced downward by the space of the movable cavity M as shown in fig. 14, following the elastic contraction of the elastic guide 41; corresponding to the removal from the periphery of gasket P resting on rim 432 of boss 431, so that gasket P can be completely inserted into annular groove S1 of the bipolar plate, as shown in fig. 15. Thus, as shown in fig. 16, the ring body of the seal ring P can be sufficiently bonded to the bonding surface of the bipolar plate (i.e., the groove bottom surface of the annular groove S1), thereby effectively solving the technical problem of poor bonding of the seal ring P.

Fourthly, in the pressing process, the elastic guide part 41 also plays a good buffering role, the sealing ring P is effectively prevented from being pressed to deform easily to cause the dispersion of acting force, the stable stress acting on the sealing ring P is effectively ensured, and the pressing effect is further improved.

In the embodiment of the present application, referring to fig. 8, 17 and 18, the elastic guiding element 41 includes a guiding shaft 411 and a spring 412 that are sleeved with each other, the lower plate 44 has a through hole 440 penetrating the guiding shaft 411, and the upper end of the guiding shaft 411 passes through the through hole 440 and is connected to the cam plate 43. Specifically, the fastening may be by a fastener such as a screw or the like. The lower end of the guide shaft 411 is fixed to the lift plate 45. The spring 412 is pressed between the lower plate 44 and the lifting plate 45.

Therefore, as shown in fig. 14 and 16, when the whole press fit seat 4 is driven by the jacking device 5 to abut against the turned turning plate 3 from bottom to top, the upper plate 42 abuts against the bipolar plate S on the turning plate 3 and is driven by the reaction force to drive the lower plate 44 together, and along with the contraction of the spring 412, the lower plate retreats downwards within the stroke range of the movable cavity M, so that the sealing ring P arranged on the edge 432 of the boss 431 of the cam plate 43 can be completely embedded into the annular groove S1 of the bipolar plate, the sealing ring P can be fully attached to the bottom adhesive surface of the annular groove S1, and the adhesive effect is effectively improved.

In addition, the elastic contraction of the spring 412 plays a good role in buffering, the amplitude of easy deformation of the sealing ring P due to abutting is reduced, the dispersion of acting force is avoided, the stress stability acting on the sealing ring P is improved, and the pressing effect is further improved.

In the present embodiment, referring to fig. 6 and 8, the lifting plate 45 is provided with a mounting plate 452, and the guide posts 451 are disposed on the mounting plate 452. The mounting plate 452 is further provided with a fixing groove 453 for mounting the elastic guide 41, and a mounting hole 454 for mounting a fastener is opened at the bottom of the fixing groove 453. The spring 412 of the elastic guide 41 is engaged in the fixing groove 453, and the lower end of the guide shaft 411 corresponds to the mounting hole 454 so that a mounting fastener such as a screw is fixedly inserted.

On the other hand, the lifting plate 45 is additionally provided with a mounting plate 452 as a mounting portion for mounting components such as the guide post 451 and a special structure on the lifting plate 45. The jacking plates are kept intact, effectively ensuring the structural strength of the jacking plates 45.

On the other hand, the fixing groove 453 arranged on the mounting plate 452 enables the elastic guide 41 to be fixed in the fixing groove 453, so that the spring 412 is effectively prevented from being distorted when being contracted and deformed, and the situation that glue on the gluing part of the bipolar plate overflows after being extruded and is distributed unevenly due to the fact that the upper plate 42 and the lower plate 44 are easy to shift is avoided.

In an embodiment of the present application, referring to fig. 5 and fig. 6, the jacking device 5 includes an electric cylinder 51 and a pressure sensor 52, the pressure sensor 52 is disposed at the bottom of the jacking plate 45, and the pressure sensor 52 is electrically connected to the electric cylinder 51. The driving shaft of the electric cylinder 51 is connected to the lifting plate 45, and the lifting device 5 adjusts the acting force of the electric cylinder 51 on the lifting plate 45 according to the detection signal of the pressure sensor 52.

Thus, the pressure sensor 52 is used to detect the pressing force applied to the bipolar plate and feed back a detection signal, so that the control center of the device can control the electric cylinder 51 in time.

Compared with the traditional cylinder, the electric cylinder 51 has higher starting and stopping sensitivity, and is beneficial to improving the adjusting efficiency and the pressure precision of jacking control.

In the embodiment of the present application, referring to fig. 6, 9 and 10, a plurality of guiding openings 433 penetrating the cam 43 are opened on the boss 431 of the cam 43. In the present embodiment, the guiding openings 433 are preferably square openings, the guiding openings 433 are arranged in a matrix, and at least one side of each guiding opening 433 is close to the edge 432 of the boss 431. As shown in fig. 6 and 17, the lower plate 44 is provided with a guide block 442 protruding upward, the guide block 442 is provided protruding from the lower plate 44 and is matched with the guide opening 433 in shape, and the guide block 442 can pass through the guide opening 433 of the cam plate 43.

Therefore, as shown in fig. 10 and 13, the guide block 442 passing through the guide opening 433 can limit the position of the sealing ring P placed on the edge 432 of the boss 431 inside, so as to be matched with the inside and outside of the surrounding edge 423 of the upper plate 42 surrounding the socket 422 to position the sealing ring P, thereby effectively preventing the sealing ring P from being easily displaced before being pressed and adhered, and further improving the positioning effect of the sealing ring P.

During the pressing process, as shown in fig. 14, 15 and 16, the upper plate 42 is abutted by the plate surface of the bipolar plate, and the upper plate 42 and the lower plate 44 are displaced downward by the space of the movable cavity M along with the elastic shrinkage of the elastic guide 41. The surrounding edge 423 on the periphery of the sealing ring P is removed, and meanwhile, the guide block 442 on the inner side of the sealing ring P can also move downwards along with the lower plate 44 in the guide port 433 of the profile plate 43, so that the lower plate is removed from the inner side of the sealing ring P, the sealing ring P can be smoothly embedded into the annular groove S1 of the bipolar plate, and the bonding effect is effectively improved.

Positioning is made for the sealing ring P placed on the rim 432 of the boss 431 of the cam 43, in other embodiments (not shown), the outside of the sealing ring P continues to be peripherally confined by the peripheral edge 423 of the upper plate 42 around the socket 422. As for the inner side of the gasket P, it may be preferable to provide a sunken step (not shown) on the edge 432 of the boss 431 on the cam 43, i.e. the edge 432 of the boss 431 is lower than the upper surface of the boss 431. The sealing ring P can be clamped into the sinking step. Therefore, the boss 431 with the sunken step is also beneficial to matching with the annular groove S1 structure on the bipolar plate, and the sunken step is used for abutting against the sealing ring P, so that the sealing ring P can be smoothly embedded into the annular groove S1 on the bipolar plate, and the bonding and fixing effects are effectively ensured.

In the embodiment of the present application, referring to fig. 4 and 11, a plurality of locking members 6 are disposed and distributed around the press-fit seat 4, and each locking member 6 includes a hook 61 and a rotary cylinder 62. When the turning plate 3 is covered on the press seat 4, the rotating cylinder 62 drives the hook 61 to rotate to be buckled on the turning plate 3, so as to lock the turning plate 3. Therefore, the jacking device 5 drives the pressing seat 4 to be pressed against the turning plate 3 so as to press and bond the sealing ring P on the bipolar plate S from bottom to top.

In this embodiment, referring to fig. 3, fig. 5 and fig. 6, the pressing mechanism 400 further includes a base plate 401 located below the lifting plate 45, the base plate 401 is fixed on the platform T of the apparatus, a central hole 402 is formed in a middle portion of the base plate 401, the central hole 402 penetrates to a position below the platform T, so that the lifting device 5 can be disposed at the bottom of the platform T, and a driving shaft of the electric cylinder 51 on the lifting device 5 penetrates through the central hole 402 of the base plate 401 and is fixedly connected to the bottom of the lifting plate 45.

Guide tubes 403 are arranged at four corners of the base plate 401, guide rods 455 corresponding to the positions of the guide tubes 403 are also arranged at four corners of the lifting plate 45, and each guide rod 455 is sleeved with the corresponding guide tube 403 to play a role in guiding.

The equipment is used for carrying out the processing operation of dispensing. In practical application, glue needs to be accurately coated in the annular groove S1 in dispensing, but in the existing equipment, because the space on the feeding table 1 is inevitably larger than that of the bipolar plate, the positions of the feeding table 1 are easy to be inconsistent each time, and the problems of position deviation and position inaccuracy exist, so that the glue dispensing head on the glue dispensing device is easy to be misplaced in dispensing on the bipolar plate.

Therefore, the positions of the bipolar plates on the feeding table 1 are not uniform, so that the problems of position deviation and low dispensing accuracy exist. In an embodiment of the present application, please refer to fig. 3 and fig. 19 together, the feeding mechanism 100 further includes a positioning and collecting device 71, the positioning and collecting device 71 is used for collecting the position information of the bipolar plate placed on the feeding table 1, so that the three-axis dispensing device 2 can glue the bipolar plate according to the position information of the positioning and collecting device 71, thereby effectively solving the problem that the positions of the bipolar plate placed on the feeding table 1 are not uniform and have position deviation, and further improving the accuracy of dispensing.

In this embodiment, the positioning and collecting device 71 may preferably include a camera, and a control center of the equipment may analyze the position information on the image by using the camera to collect the image. The position information can be understood as coordinates of four corners of the bipolar plate or coordinates of the parts of the bipolar plate which need to be glued. In the present embodiment, the glued portion on the bipolar plate is the annular groove S1 thereon, and the position information may preferably be the specific coordinates of each portion of the groove body of the annular groove S1. Therefore, the three-axis glue dispensing device 2 can precisely glue on the bipolar plate according to the position information, and the processing precision is effectively improved.

In the embodiment of the present application, please refer to fig. 3 and fig. 19, a rail 81 and a driving chain 82 connected to the feeding table 1 are further disposed between the feeding mechanism 100 and the glue dispensing mechanism 200, and the driving chain 82 drives the feeding table 1 to move along the rail 81, so that the feeding table 1 can be switched between the feeding mechanism 100 and the glue dispensing mechanism 200.

On the basis of the above, as shown in fig. 19, the feeding mechanism 100 further includes a bracket 72 that straddles the rail 81, and the positioning and collecting device 71 is provided on the bracket 72. In this embodiment, the bracket 72 is provided with a mounting bracket 73 for fixing the positioning acquisition device 71. Therefore, by utilizing the displacement of the feeding platform 1 on the track 81, the positioning acquisition device 71 is arranged on the bracket 72, so that the bipolar plate on the whole feeding platform 1 can be swept, and the acquisition effect is further improved.

Therefore, a driving structure for driving the positioning and collecting device 71 to move is not required to be additionally arranged on the bracket 72, and the reconstruction cost of the equipment is effectively reduced.

In an embodiment of the present application, referring to fig. 3 and fig. 19, the dispensing mechanism 200 further includes a glue cleaning device 201, the glue cleaning device 201 includes a rolling base 9 for mounting the adhesive tape, and the dispensing head of the three-axis dispensing device 2 can move to the adhesive tape disposed on the rolling base 9. Therefore, after completing one round of dispensing operation, the dispensing head of the three-axis dispensing device 2 can be cleaned by the adhesive tape on the rolling seat 9, so as to prepare a new round of dispensing operation, thereby improving the dispensing accuracy.

In this embodiment, as shown in fig. 19, the rolling base 9 includes a roller 91 and a driver 92 for driving the roller 91 to operate, the adhesive tape is mounted on the roller 91, and the driver 92 drives the roller 91 to operate, so that the adhesive part of the adhesive tape can be adjusted, and the utilization rate of the adhesive tape can be effectively improved.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pressing mechanism is used for bonding a sealing ring on a bipolar plate subjected to gluing, and is characterized by comprising:

the turning plate is used for placing the bipolar plate;

the profiling plate is positioned in the movable cavity, a boss for placing a sealing ring is arranged on the profiling plate, and the edge of the boss corresponds to the position of a gluing part on the bipolar plate; the upper shaping plate is provided with a socket joint which is sleeved with the boss, and the periphery of the upper shaping plate surrounding the surrounding edge of the socket joint surrounds the edge of the boss;

2. A laminating mechanism according to claim 1, characterised in that: the elastic guide piece comprises a guide shaft and a spring which are sleeved with each other, a through hole which is connected with the guide shaft in a penetrating way is formed in the lower plate, the upper end of the guide shaft penetrates through the through hole and is connected with the profile plate, and the lower end of the guide shaft is fixed on the jacking plate; the spring is elastically pressed between the lower plate and the jacking plate.

3. The laminating mechanism of claim 2, wherein: the jacking plate is provided with a mounting plate, and the guide pillar is arranged on the mounting plate; still be equipped with on the mounting panel and be used for the installation the fixed slot of elastic guide, the mounting hole that is used for installing the fastener is seted up to the bottom of fixed slot, elastic guide's spring scarf joint in the fixed slot, the lower extreme of guiding axle with the mounting hole position corresponds.

4. The laminating mechanism of claim 1, wherein: the jacking device comprises an electric cylinder and a pressure sensor, the pressure sensor is arranged on the jacking plate, and the pressure sensor is electrically connected with the electric cylinder; and a driving shaft on the electric cylinder is connected with the jacking plate, and the jacking device adjusts the acting force of the electric cylinder on the jacking plate according to the detection signal of the pressure sensor.

5. The laminating mechanism according to any one of claims 1 to 4, wherein: a plurality of guide openings penetrating through the profile plate are formed in the boss of the profile plate, the guide openings are arranged in a matrix manner, and at least one side of each guide opening is close to the edge of the boss; be equipped with on the lower shaped plate with the guide block that guiding opening quantity is the same and the position corresponds, the guide block is in protruding setting on the lower shaped plate, the guide block can be followed guiding opening on the profile plate is worn out.

6. An automatic processing device for bipolar plates of fuel cells is characterized by comprising a feeding mechanism, a glue dispensing mechanism, a mechanical arm and the pressing mechanism as claimed in any one of claims 1 to 5 which are sequentially arranged, wherein the feeding mechanism comprises a feeding table for placing the bipolar plates; the glue dispensing mechanism comprises a triaxial glue dispensing device, and the triaxial glue dispensing device is used for gluing the bipolar plate on the feeding table; and the mechanical arm transfers the bipolar plate from the feeding table to a turning plate of the pressing mechanism.

7. The automatic processing equipment for bipolar plate of fuel cell according to claim 6, wherein: the feeding mechanism further comprises a positioning and collecting device, and the positioning and collecting device is used for collecting the position information of the bipolar plate placed on the feeding table; and the three-axis dispensing device is used for gluing the bipolar plate according to the position information of the positioning and collecting device.

8. The automatic processing equipment for bipolar plate of fuel cell according to claim 7, wherein: the automatic glue dispensing device is characterized in that a track and a driving chain connected with the feeding table are arranged between the feeding mechanism and the glue dispensing mechanism, and the driving chain drives the feeding table to move along the track.

9. The automatic processing equipment for bipolar plate of fuel cell according to claim 8, wherein: the feeding mechanism further comprises a support spanned on the track, and the positioning and collecting device is arranged on the support.

10. The automatic processing equipment for bipolar plate of fuel cell according to claim 6, wherein: the dispensing mechanism further comprises a glue cleaning device, the glue cleaning device comprises a rolling seat used for installing a glue tape, and a dispensing head on the three-axis dispensing device can move to be arranged on the glue tape of the rolling seat.