CN220597626U

CN220597626U - Film plating clamp

Info

Publication number: CN220597626U
Application number: CN202322284088.1U
Authority: CN
Inventors: 郑慧军; 潘超; 王婷
Original assignee: Star Hydrogen Source Shanghai Technology Co ltd
Current assignee: Star Hydrogen Source Shanghai Technology Co ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2024-03-15
Anticipated expiration: 2033-08-23

Abstract

The utility model discloses a coating clamp, which comprises: a fixed frame; the rotary pressing mechanisms are distributed on the fixed frame, the rotary pressing mechanisms comprise pressing pieces, supporting pieces, connecting pieces and elastic elements, the supporting pieces are connected on the inner side of the fixed frame, the first ends of the pressing pieces penetrate through the connecting pieces of the fixed frame through the first frame face of the fixed frame and are movably connected with the fixed frame, the second ends of the pressing pieces are arranged on the same side face of the supporting pieces, the elastic elements are arranged on the second frame face of the fixed frame opposite to the first frame face, the pressing pieces are tensioned on the first frame face of the fixed frame through the connecting pieces, and the edges of coating objects between the pressing pieces and the supporting pieces are pressed on the supporting pieces through the second ends of the driving pressing pieces. The utility model can realize clamping and fixing of the coating clamp and the coating object, thereby accurately positioning the coating object; meanwhile, the one-time coating of the coating object can be conveniently and efficiently realized, the integrity and the quality of the coating are ensured, and the efficiency is improved.

Description

Film plating clamp

Technical Field

The utility model relates to the technical field of vacuum coating, in particular to a coating clamp.

Background

As one of the main components of the proton exchange membrane fuel cell structure, bipolar plates account for 80% of the weight and 45% of the cost of the fuel cell. Compared with graphite and composite bipolar plates, the metal bipolar plate has good mechanical strength, processability and conductivity. Especially in view of transportation scenarios, metallic bipolar plates are more resistant to mechanical shock and vibration caused by cracking and leakage of the reactant gases. In addition, the metal bipolar plate reduces the manufacturing cost by virtue of low cost, and improves the competitiveness of the metal bipolar plate in the fuel cell market.

However, metals are susceptible to corrosion in acidic and humid environments. It was investigated that dissolution of the metal bipolar plate may occur when operating in a fuel cell having a pH of 2-4 and a temperature of about 80 ℃. And, the free metal ions may poison the membrane electrode assembly, reducing the power output of the fuel cell. In addition, the oxide layer formed during corrosion increases the resistivity of the metallic bipolar plate, and as the oxide layer grows further, the efficiency of the fuel cell will be greatly reduced.

The problems can be effectively solved by coating the surface of the metal bipolar plate. However, when the metal bipolar plate is clamped for coating, the following problems exist:

(1) The existing fixture is used for positioning through a product positioning hole, and deformation of the positioning hole is easy to cause in the coating process.

(2) The traditional coating clamp for the metal bipolar plate is low in clamping efficiency.

Therefore, it is necessary to provide a plating jig to solve the above-mentioned problems in the prior art.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a coating clamp.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a plating jig comprising:

a fixed frame;

the rotary pressing mechanisms are distributed on the fixed frame and comprise pressing pieces, supporting pieces, connecting pieces and elastic elements, the supporting pieces are connected to the inner side of the fixed frame, the first ends of the pressing pieces penetrate through the connecting pieces of the fixed frame and are movably connected with the fixed frame through the first frame face of the fixed frame, the second ends of the pressing pieces are arranged on the same side face of the supporting pieces, the elastic elements are arranged on the second frame face of the fixed frame, which is opposite to the first frame face, and the pressing pieces are tensioned on the first frame face of the fixed frame through the connecting pieces to drive the second ends of the pressing pieces to be placed on the edge of a coating object between the pressing pieces and the supporting pieces to be pressed on the supporting pieces.

Further, the fixed frame is the rectangle, four rotatory hold-down mechanism divide to be located on four bights of rectangle of fixed frame, every in the rotatory hold-down mechanism, support piece is connected on corresponding one the inboard at bights, the first end of compressing tightly the piece is passed through the connecting piece the through-hole that is equipped with on the fixed frame with fixed frame swing joint, wears out second frame face side be equipped with the cap on the connecting piece, elastic element elasticity butt is in the cap with between the second frame face of fixed frame.

Further, the connecting piece comprises a step pin, the through hole comprises a step hole matched with the step pin, the step pin comprises a first shaft section, a second shaft section and a third shaft section which are sequentially connected, the shaft diameter of the first shaft section is larger than that of the second shaft section, and the shaft diameter of the second shaft section is larger than that of the third shaft section; the second shaft section is arranged in the step hole in a penetrating mode, the first shaft section forms the cap part and is positioned outside the step hole, the third shaft section is connected with the first end of the pressing piece, and the elastic element is sleeved on the second shaft section and is abutted between the first shaft section and the step in the step hole.

Further, a first mounting hole is formed in the first end of the pressing piece, a second mounting hole is formed in the second end of the pressing piece, the first mounting hole is connected with the third shaft section of the step pin, a pin piece is arranged on the supporting piece, and the pressing piece is matched with the pin piece through the second mounting hole and is arranged on the same side face of the supporting piece; and a positioning hole is formed in the edge of the coating object, and the coating object is matched with the pin piece through the positioning hole and is arranged between the pressing piece and the supporting piece.

Further, the shape of the support member includes a right triangle, and two right-angle sides of the right triangle are connected with inner sides of corners of the fixing frame.

Further, when the second mounting hole is sleeved on the pin piece, the side face of the pressing piece is located in the hypotenuse of the right triangle of the supporting piece.

Further, the rotary pressing mechanism further comprises a pull ring, the third shaft section penetrates out of the first mounting hole, a through hole is formed in the side face of the third shaft section exposed out of the first mounting hole, and the pull ring penetrates into the through hole and is used for limiting the reset position of the step pin.

Further, a fixed shaft is arranged on the fixed frame and used for driving the fixed frame to rotate.

Further, the fixed shaft comprises a first fixed shaft and a second fixed shaft which are respectively arranged on two opposite frames of the fixed frame.

Further, the first fixing shaft and the second fixing shaft are respectively arranged at the center positions of two opposite side frames of the fixing frame.

According to the technical scheme, the coating object is clamped and fixed by adjusting the rotary pressing mechanism, so that the coating object is accurately positioned. Meanwhile, the rotary pressing mechanism and the fixed frame are matched, so that one-time coating of a coating object can be conveniently and efficiently realized, the integrity and quality of the coating are ensured, and the efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of a plating jig according to an embodiment of the present utility model;

FIGS. 2-3 are schematic diagrams of a rotary pressing mechanism according to embodiments of the present utility model;

fig. 4 is a cross-sectional view of a rotary compression mechanism according to an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. As used herein, the word "comprising" and the like means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof without precluding other elements or items.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Reference is made to fig. 1-4. The embodiment of the utility model provides a coating clamp, which comprises: a fixed frame 3 and a plurality of rotary pressing mechanisms 2. The inner side of the fixed frame 3 is used for installing a coating object. The rotary pressing mechanism 2 is used for being matched with the fixed frame 3, and a coating object is installed on the inner side of the fixed frame 3. The object of plating may be, for example, a fuel cell metal bipolar plate.

Each rotary pressing mechanism 2 is distributed on the fixed frame 3. The rotary pressing mechanism 2 includes a pressing member 2-1, a supporting member 2-2, a connecting member 2-3, and an elastic member 2-4. Wherein the support 2-2 is attached to the inside of the fixed frame 3. The first end of the pressing piece 2-1 passes through the connecting piece 2-3 of the fixed frame 3 from the first frame surface (the front surface shown in fig. 1) of the fixed frame 3 to form movable connection with the fixed frame 3; the second end of the pressing member 2-1 is placed on the same side as the supporting member 2-2. The elastic element 2-4 is arranged on a second frame surface of the fixed frame 3 opposite to the first frame surface, and tightens the compressing element 2-1 on the first frame surface of the fixed frame 3 through the connecting element 2-3, so as to drive the second end of the compressing element 2-1 to compress the edge of the coating object arranged between the compressing element 2-1 and the supporting element 2-2 on the supporting element 2-2 for installation.

As shown in fig. 1 and referring to fig. 4 in combination, in some embodiments of the present utility model, the fixing frame 3 is formed of four opposite side frames, and the four side frames are sequentially connected to form a rectangular fixing frame 3. The four rotary pressing mechanisms 2 are respectively arranged at four corners of the rectangular fixed frame 3. Four supporting pieces 2-2 are provided, and each supporting piece 2-2 is fixedly connected to the inner side of one corner of the rectangular fixing frame 3. For example, the support 2-2 may be fixedly coupled to the fixing frame 3 by welding. Two through holes 2-6 (up-down direction shown in fig. 1) are respectively arranged on two sides of the upper frame and the lower frame of the fixed frame 3. The pressing piece 2-1 is movably connected with the fixed frame 3 through clearance fit between the through hole 2-6 and the connecting piece 2-3.

As shown in fig. 2-3, in some embodiments of the present utility model, the support member 2-2 may support the fuel cell metal bipolar plate while clamping the fuel cell metal bipolar plate. Meanwhile, in the coating process, the supporting piece 2-2 can also play a role in limiting the reverse side of the metal bipolar plate of the fuel cell. The side of the supporting piece 2-2 on the same side as the pressing piece 2-1 is provided with a pin piece 2-7, and the pin piece 2-7 can be a cylindrical pin 2-71. The shape of the supporting member 2-2 includes a right triangle, which is not only convenient for fixing the two right-angle sides of the right triangle with the inside of the corner of the fixed frame 3, but also can enhance the stability of the frame body of the fixed frame 3.

As shown in fig. 4, in some embodiments of the present utility model, the connection member 2-3 may include a stepped pin 2-31, and the through hole 2-6 may include a stepped hole 2-61 adapted to the stepped pin 2-31. The step pin 2-31 is composed of a first shaft section, a second shaft section and a third shaft section which are connected in sequence. The shaft diameter of the first shaft section is larger than that of the second shaft section, and the shaft diameter of the second shaft section is larger than that of the third shaft section. The first shaft section forms a cap part of the step pin 2-31 and is positioned outside the step hole 2-61; the second shaft section is arranged in the step hole 2-61 in a penetrating way and can move out of the step hole 2-61; the third shaft section is connected to a first end of the hold-down member 2-1. The elastic element 2-4 is sleeved on the second shaft section and is abutted between the inner side of the cap part of the first shaft section and the step surface of the step hole 2-61. The first end of the pressing member 2-1 forms a movable connection with the fixed frame 3 through the cooperation of the step pin 2-31, the step hole 2-61 and the elastic element 2-4, and the second end of the pressing member 2-1 is pressed on the supporting member 2-2 through the elastic action of the elastic element 2-4, wherein the movable connection rotates around the step hole 2-61 and moves along the step hole 2-61. The elastic element 2-4 may comprise a spring.

As shown in fig. 2-3, in some embodiments of the present utility model, a first end of the pressing member 2-1 is provided with a first mounting hole adapted to the third shaft section of the step pin 2-31, and a second end of the pressing member 2-1 is provided with a second mounting hole. The first mounting hole of the pressing member 2-1 penetrates through the third shaft section of the step pin 2-31 and forms connection, so that the pressing member 2-1 is movably connected with the fixed frame 3. The second mounting hole of the pressing member 2-1 passes through the cylindrical pin 2-71 on the supporting member 2-2, and the two form clearance fit. The fuel cell metal bipolar plate is sleeved on the cylindrical pin 2-71 through the locating holes correspondingly arranged at the edge for hanging, and the pressing piece 2-1 is sleeved on the cylindrical pin 2-71 through the second mounting hole, so that the pressing piece 2-1 can press the fuel cell metal bipolar plate on the supporting piece 2-2 from the outer side under the tensile force of the elastic element 2-4. At this time, the side surface of the pressing member 2-1 is positioned in the hypotenuse of the right triangle-shaped supporting member 2-2, so that shielding of the bipolar plate can be avoided. The second mounting hole matched with the cylindrical pins 2-71 is a round hole.

As shown in fig. 2 and 4, in some embodiments of the utility model, the rotary compression mechanism 2 further comprises a pull ring 2-5. The side surface of the third shaft section exposed out of the first mounting hole is provided with a perforation, and the pull rings 2-5 are arranged in the perforation in a penetrating way. The pull ring 2-5 is used to define the reset position of the step pin 2-31 and can also be used to pull the step pin 2-31. The tab 2-5 may be formed by a length of wire spirally wound (resembling a key ring structure) to facilitate passage of the tab 2-5 through the perforations and to resist removal. The pull ring 2-5 may be a circular ring or an elliptical ring.

In some embodiments of the utility model, as shown in fig. 1 and 4, the surface shown in fig. 1 is a front surface, and the rotary pressing mechanism 2 is in an initial state, and the elastic elements 2-4 (springs) are in a compressed state. The step pin 2-31 is pushed to the front direction from the back surface of the rotary compressing mechanism 2, at the moment, the elastic element 2-4 (spring) is further compressed, and the compressing piece 2-1 can be stirred, so that the second end of the compressing piece 2-1 is separated from the cylindrical pin 2-71 of the supporting piece 2-2, and further the rotary compressing mechanism is rotated. At this time, the step pin 2-31 forms a pivot of the pressing member 2-1. During positioning, four positioning holes on the edge of the metal bipolar plate of the fuel cell respectively penetrate through cylindrical pins 2-71 on the corresponding support piece 2-2, then the step pins 2-31 are pushed to the front direction, through rotation, round holes on the second end of the pressing piece 2-1 are sleeved on the cylindrical pins 2-71 on the support piece 2-2, the step pins 2-31 are loosened, the second end of the pressing piece 2-1 is sleeved into the cylindrical pins 2-71 under the action of restoring tension of an elastic element 2-4 (a spring), the metal bipolar plate of the fuel cell is pressed on the support piece 2-2, and the situation that the pressing piece 2-1 is shifted due to gravity, vibration and the like to cause positioning failure of the metal bipolar plate of the fuel cell can be prevented. After the fuel cell metal bipolar plate is installed, the external force is eliminated, the elastic element 2-4 (spring) reversely pushes the step pin 2-31 to reset, the elastic element 2-4 (spring) returns to the original compression state, and the fuel cell metal bipolar plate is fixed on the inner side of the fixed frame 3.

As shown in fig. 1, in some embodiments of the present utility model, a fixed shaft is disposed on the fixed frame 3, so as to drive the fixed frame 3 to rotate along an axis of the fixed shaft. The fixed shaft comprises a first fixed shaft 1 and a second fixed shaft 4, and the first fixed shaft 1 and the second fixed shaft 4 are respectively arranged in the middle of the upper frame and the lower frame of the fixed frame 3. The first fixed shaft 1 is matched with a coating equipment part to play roles in conducting electricity and positioning; the second fixed shaft 4 is matched with the U-shaped groove 5 through the lower shaft limiting pin 6, and the U-shaped groove 5 is fixed on a coating equipment part to play a role in fixing and conducting.

In conclusion, the fuel cell metal bipolar plate is clamped and fixed by adjusting the rotary pressing mechanism 2, so that the fuel cell metal bipolar plate is accurately positioned. Meanwhile, the rotary pressing mechanism 2 and the fixed frame 3 can conveniently and efficiently realize one-time coating of the metal bipolar plate of the fuel cell, ensure the integrity and quality of the coating and improve the clamping efficiency.

While embodiments of the present utility model have been described in detail hereinabove, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. It is to be understood that such modifications and variations are within the scope and spirit of the present utility model as set forth in the following claims. Moreover, the utility model described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims

1. A coating fixture, comprising:

a fixed frame;

2. The coating clamp according to claim 1, wherein the fixing frame is rectangular, four rotary pressing mechanisms are respectively arranged on four rectangular corners of the fixing frame, in each rotary pressing mechanism, the supporting piece is connected to the inner side of the corresponding corner, the first end of the pressing piece penetrates through a through hole formed in the fixing frame through the connecting piece to be movably connected with the fixing frame, a cap is arranged on the connecting piece penetrating out of the second frame face side, and the elastic element is elastically abutted between the cap and the second frame face of the fixing frame.

3. The plating jig according to claim 2, wherein the connecting member comprises a step pin, the through hole comprises a step hole which is matched with the step pin, the step pin comprises a first shaft section, a second shaft section and a third shaft section which are connected in sequence, wherein the shaft diameter of the first shaft section is larger than that of the second shaft section, and the shaft diameter of the second shaft section is larger than that of the third shaft section; the second shaft section is arranged in the step hole in a penetrating mode, the first shaft section forms the cap part and is positioned outside the step hole, the third shaft section is connected with the first end of the pressing piece, and the elastic element is sleeved on the second shaft section and is abutted between the first shaft section and the step in the step hole.

4. The coating clamp according to claim 3, wherein a first end of the pressing member is provided with a first mounting hole, a second end of the pressing member is provided with a second mounting hole, the first mounting hole is connected with the third shaft section of the step pin, the supporting member is provided with a pin member, and the pressing member is matched with the pin member on the same side surface of the supporting member through the second mounting hole; and a positioning hole is formed in the edge of the coating object, and the coating object is matched with the pin piece through the positioning hole and is arranged between the pressing piece and the supporting piece.

5. The plating jig according to claim 4, wherein the shape of the support member includes a right triangle, and both right-angle sides of the right triangle are connected to inside corners of the fixing frame.

6. The plating jig according to claim 5, wherein the side surface of the hold-down member is located within the hypotenuse of the right triangle of the support member when the second mounting hole is fitted over the pin member.

7. The plating jig according to claim 4, wherein the rotary hold-down mechanism further comprises a pull ring, the third shaft section is penetrated out from the first mounting hole, a perforated hole is provided on a side surface of the third shaft section exposed to the first mounting hole, and the pull ring is penetrated in the perforated hole for defining a reset position of the step pin.

8. The plating jig according to claim 1, wherein the fixing frame is provided with a fixing shaft for driving the fixing frame to rotate.

9. The plating jig according to claim 8, wherein the fixing shaft includes a first fixing shaft and a second fixing shaft, respectively provided on two opposite rims of the fixing frame.

10. The plating jig according to claim 9, wherein the first fixed shaft and the second fixed shaft are respectively disposed at center positions of two opposite side frames of the fixed frame.