Metal plate welding clamp device

Abstract

The utility model discloses a metal plate welding clamp device. The metal plate welding clamp device comprises a lower die plate, a first upper die plate, a second upper die plate and a pressing component. The first upper die plate is arranged above the lower die plate in a covering mode, a to-be-welded workpiece is contained and placed between the first upper die plate and the lower die plate, the pressing component is pressed on the first upper die plate and the lower die plate, and a first through groove used for welding the to-be-welded workpiece is formed in the first upper die plate; the second upper die plate is arranged above the lower die plate in a covering mode, a workpiece to be welded is contained between the second upper die plate and the lower die plate, the pressing component is pressed on the second upper die plate and the lower die plate, and a second through groove used for welding the workpiece to be welded is formed in the second upper die plate. The upper die plate is divided into the two whole upper die plates, namely the first upper die plate and the second upper die plate, the two upper die plates are provided with the partial welding runners respectively, and then the two upper die plates and the lower die plate are pressed by turns through the pressing device, so that the problem that sufficient pressing is difficult due to the fact that split upper die plates are adopted is solved.

Description

Technical Field

[0001] The utility model relates to the field of welding metal bipolar plates of fuel cells, in particular to a metal plate welding fixture device. Background Art

[0002] Currently, most fuel cell metal bipolar plates are laser welded. The fixture used consists of a lower plate and multiple split upper plates. The product is placed on the lower plate, and then the multiple split upper plates are placed on top of the product. When the lower plate is energized, it generates a magnetic force, causing the multiple upper plates to attract each other, thereby pressing the product together. Due to the uneven surface of the product after the metal plate is formed, and the simultaneous use of multiple split upper plates to press the product together, the fixture design makes it difficult to ensure sufficient pressing. This can easily lead to defects such as weld wear during laser welding, affecting the sealing of the bipolar plate and ultimately causing the bipolar plate to be scrapped, making it difficult to effectively reduce production costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a metal plate welding fixture device in order to overcome the defect of insufficient pressing of the split upper template in the prior art.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides a metal plate welding fixture device, which includes a lower template, a first upper template, a second upper template and a pressing component; the first upper template is covered above the lower template, and the first upper template and the lower template are used to accommodate the workpiece to be welded, the pressing component is pressed against the first upper template and the lower template, and the first upper template is provided with a first through groove for welding the workpiece to be welded; the second upper template is covered above the lower template, and the second upper template and the lower template are used to accommodate the workpiece to be welded, the pressing component is pressed against the second upper template and the lower template, and the second upper template is provided with a second through groove for welding the workpiece to be welded.

[0006] In this solution, the first and second upper mold plates form the primary components of the metal plate welding fixture. By dividing the upper mold plate into two integral sections, each with a partial welding channel defined, and using a clamping device to alternately clamp the two upper mold plates against the lower mold plate, the problem of insufficient compression in split upper mold plates is avoided.

[0007] Preferably, there are multiple first through grooves, and the multiple first through grooves include a first peripheral contour through groove for welding the peripheral contour of the workpiece to be welded and a flow channel through groove for welding the workpiece to be welded.

[0008] In this solution, by setting multiple first through grooves as first peripheral contour through grooves of the peripheral contour of the workpiece to be welded and flow channel through grooves for welding the workpiece to be welded, it is possible to use the first upper template to complete part of the entire welding operation.

[0009] Preferably, the second through groove comprises a through groove with a second peripheral contour for welding the workpiece to be welded.

[0010] In this solution, by setting the second through groove as a through groove for welding the second outer contour of the workpiece to be welded, it is possible to use the second upper template to complete part of the entire welding operation.

[0011] Preferably, the metal plate welding fixture device further comprises a plurality of positioning components, wherein the plurality of positioning components are connected to the lower template and are used for positioning and plugging into the first upper template, the second upper template and / or the workpiece to be welded.

[0012] In this solution, by providing a number of positioning components, it is ensured that the various parts of the metal plate welding fixture device can be accurately aligned when the mold is closed, thereby ensuring the dimensional accuracy and appearance quality of the formed workpiece.

[0013] Preferably, the plurality of positioning components include a plurality of positioning pins, and the plurality of positioning pins are all provided on the lower template. The plurality of positioning pins are located around the workpiece to be welded and plugged into the workpiece to be welded.

[0014] In this solution, a space for placing the workpiece to be welded is enclosed by a number of positioning pins along the outline of the workpiece to be welded, so that the workpiece to be welded is confined within the space, thereby achieving precise positioning of the workpiece to be welded and ensuring welding quality.

[0015] Preferably, several of the positioning components include multiple positioning sleeves, and each of the positioning sleeves includes a ring and a column, the column is fixed to the lower template, the ring is arranged at a corresponding position of the first upper template or the second upper template, and the column is inserted into the ring.

[0016] In this solution, by setting the sleeve column parts of several positioning sleeves on the lower template, and setting rings at the corresponding positions of the first upper template and the second upper template, the first upper template and the second upper template are accurately positioned by relying on the cooperation of the sleeve column and the ring, thereby improving the welding accuracy and welding quality.

[0017] Preferably, the pressing component includes a pushing mechanism, and the pushing mechanism acts on the upper surface of the first upper template or the second upper template.

[0018] In this solution, the pressing component is used to ensure that the two upper templates and the lower template of the metal plate welding clamping assembly are tightly fitted, thereby improving the welding quality.

[0019] Preferably, the pressing component further includes a clamping member, one end of the clamping member is clamped against the lower surface of the lower template, and the other end of the clamping member is clamped against the upper surface of the first upper template or the second upper template.

[0020] In this solution, additional clamping parts are provided to ensure that the two upper templates and the lower template of the metal plate welding clamping assembly are further closely fitted, thereby further improving the welding quality.

[0021] Preferably, an air inlet is opened on a side of the lower template, and the air inlet is connected to the cavity between the first upper template or the second upper template and the lower template.

[0022] In this solution, shielding gas can be input into the welding cavity of the workpiece to be welded through the air inlet, forming a protective layer to prevent the surface of the workpiece to be welded from reacting with oxygen in the air to form an oxide film, which affects the quality of welding and the performance of the formed workpiece.

[0023] Preferably, the metal plate welding fixture device further includes an inert gas supply component, which is connected to the gas inlet and is used to provide inert gas.

[0024] In this solution, an inert gas supply component provides inert gas to form an inert gas welding environment, which better protects the welding area, improves welding quality, and prevents welding defects.

[0025] The positive progress effect of this utility model is:

[0026] The metal plate welding fixture device of the present invention comprises a first upper plate and a second upper plate, which constitute the main components of the device. By dividing the upper plate into two integral upper plates, each with a partial welding flow path defined in each plate, and then alternately pressing the two plates against the lower plate using a pressing device, the problem of insufficient pressing in a split upper plate is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the assembly of the metal plate welding fixture device according to an embodiment of the present utility model;

[0028] Figure 2 This is a schematic structural diagram of the first upper template according to an embodiment of the present utility model;

[0029] Figure 3 This is a schematic structural diagram of the second upper template in an embodiment of the present utility model;

[0030] Figure 4 A top perspective view of the lower template of an embodiment of the present utility model;

[0031] Figure 5 This is a three-dimensional schematic diagram of the lower template of an embodiment of the utility model;

[0032] Figure 6 This is a back perspective view of the first upper template of an embodiment of the present utility model;

[0033] Description of reference numerals:

[0034] Metal plate welding fixture device 100

[0035] Lower template 1

[0036] First upper template 2

[0037] Second upper template 3

[0038] Pressing component 4

[0039] Bolt hole 41

[0040] Cavity 5 for placing workpiece to be welded

[0041] First through groove 6

[0042] First peripheral contour through groove 61

[0043] Runner groove 62

[0044] Second through groove 7

[0045] Second peripheral contour through groove 71

[0046] Positioning component 8

[0047] Bump 81

[0048] Groove 82

[0049] Positioning pin 83

[0050] Positioning hole 84

[0051] Positioning sleeve 85

[0052] Column 851

[0053] Ferrule 852

[0054] Air Inlet 9

[0055] Welding base plate 10

[0056] Lower template pad 11 DETAILED DESCRIPTION

[0057] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0058] This embodiment provides a metal plate welding fixture device 100, such as Figure 1 As shown, the metal plate welding fixture device 100 includes a lower template 1, a first upper template 2, a second upper template 3 and a clamping component 4; the first upper template 2 is covered on the top of the lower template 1, and a cavity 5 for placing the workpiece to be welded is formed between the first upper template 2 and the lower template 1, the clamping component 4 is pressed against the first upper template 2 and the lower template 1, and the first upper template 2 is provided with a first through groove 6 for welding the workpiece to be welded; the second upper template 3 is covered on the top of the lower template 1, and the second upper template 3 and the lower template 1 are used to accommodate the workpiece to be welded, the clamping component 4 is pressed against the second upper template 3 and the lower template 1, and the second upper template 3 is provided with a second through groove 7 for welding the workpiece to be welded.

[0059] Thus, the first upper template 2 and the second upper template 3 constitute the main components of the metal plate welding fixture device 100. By dividing the upper template into two upper templates, the first upper template 2 and the second upper template 3, both upper templates are integrally formed and each has a partial welding flow channel. The two upper templates are then assembled with the lower template 1 in turn and compressed using a compression device, thereby avoiding the problem of using a split upper template that is difficult to fully press together.

[0060] In this embodiment, the welding surface of the first upper template 2 has a first through-groove 6 disposed in the central region as the welding area, and a positioning member 8 and a clamping device disposed in the peripheral region as the positioning and clamping area. Similarly, the welding surface of the second upper template 3 has a second through-groove 7 disposed in the central region as the welding area, and a positioning member 8 and a clamping device disposed in the peripheral region as the positioning and clamping area.

[0061] Specifically, if Figure 2 As shown, there are multiple first through grooves 6 , and the multiple first through grooves 6 include a first peripheral contour through groove 61 for welding the peripheral contour of the workpiece to be welded and a flow channel through groove 62 for welding the workpiece to be welded.

[0062] Therefore, by setting multiple first through grooves 6 as first peripheral contour through grooves 61 of the peripheral contour of the workpiece to be welded and flow channel through grooves 62 for welding the workpiece to be welded, it is possible to use the first upper template 2 to complete part of the entire welding operation.

[0063] In this embodiment, the first through-slot 6 comprises four first through-slots 61 for the outer contour of the workpiece to be welded, each representing four L-shaped right-angled bends of the workpiece to be welded, located at the four corners of the welding area of ​​the first upper template 2. The flow channel through-slots 62 for the workpiece to be welded comprise a plurality of tapered through-holes arranged in an array in the central portion of the welding area of ​​the first upper template 2. In other embodiments, the shapes of the first through-slots 61 for the outer contour of the workpiece to be welded and the flow channel through-slots 62 can be adjusted according to actual needs and are not limited here.

[0064] Specifically, if Figure 3 As shown, the second through groove 7 includes a second peripheral contour through groove 71 for welding the workpieces to be welded.

[0065] Therefore, by setting the second through groove 7 as the second outer contour through groove 71 for welding the workpiece to be welded, it is possible to use the second upper template 3 to complete part of the entire welding operation.

[0066] In this embodiment, the number of the second peripheral contour grooves 71 of the workpiece to be welded in the second groove 7 is four, namely two straight contours and two broken line contours, which are used to supplement the missing parts in the first peripheral contour groove 61 to form a complete overall peripheral contour of the workpiece to be welded.

[0067] Specifically, the metal plate welding fixture device 100 further includes a plurality of positioning components 8, which are all connected to the lower template 1 and used for positioning and plugging into the first upper template 2, the second upper template 3 and / or the workpiece to be welded.

[0068] Therefore, if Figure 4 and Figure 5 As shown, by providing a plurality of positioning components 8, it is ensured that the various parts of the metal plate welding fixture device 100 can be accurately aligned when the mold is closed, thereby ensuring the dimensional accuracy and appearance quality of the molded workpiece.

[0069] In this embodiment, Figure 6 As shown, six protrusions 81 are provided in the peripheral area of ​​the welding surface of the first upper template 2 and the second upper template 3. The protrusions 81 form a space for placing the workpieces to be welded along the contour of the workpieces to be welded, so that the workpieces to be welded are confined within the space. At the same time, grooves 82 are reserved at corresponding positions of the first upper template 2 or the second upper template 3. The grooves 82 cooperate with the protrusions 81 so that the first upper template 2 or the second upper template 3 and the lower template 1 can be pressed tightly when the mold is closed.

[0070] Specifically, the plurality of positioning components 8 further include a plurality of positioning pins 83 , which are disposed on the lower template 1 . The plurality of positioning pins 83 are located around the workpiece to be welded and plugged into the workpiece to be welded.

[0071] Thus, a space for placing the workpiece to be welded is formed along the contour of the workpiece to be welded by a plurality of positioning pins 83, so that the workpiece to be welded is confined within the space, thereby achieving precise positioning of the workpiece to be welded and ensuring welding quality.

[0072] In this embodiment, the positioning pin 83 is a slender cylinder protruding upward perpendicular to the upper surface of the lower template 1 and having a conical end. There are four positioning pins 83, which are respectively arranged at the four corners of the workpiece to be welded. Preferably, positioning holes 84 are set at corresponding positions on the first upper template 2 or the second upper template 3, and the positioning pin 83 can pass through the positioning hole 84 to connect the first upper template 2 or the second upper template 3 to the lower template 1. Positioning holes 84 are reserved at corresponding positions of the first upper template 2 or the second upper template 3, so that the positioning pin 83 can still limit the position of the workpiece to be welded when the mold is closed. In other embodiments, the number and position of the positioning pins 83 can be adjusted according to the actual needs of the structure of the workpiece to be welded and are not limited here.

[0073] Specifically, the plurality of positioning components 8 also include a plurality of positioning sleeves 85, and the plurality of positioning sleeves 85 include a ferrule 852 and a sleeve column 851, the sleeve column 851 is fixed to the lower template 1, the ferrule 852 is arranged at the corresponding position of the first upper template 2 or the second upper template 3, and the sleeve column 851 is inserted into the ferrule 852.

[0074] Therefore, by partially setting the sleeve columns 851 of several positioning sleeves 85 on the lower template 1, and setting rings 852 at the corresponding positions of the first upper template 2 and the second upper template 3, the first upper template 2 and the second upper template 3 are accurately positioned by relying on the cooperation between the sleeve columns 851 and the rings 852, thereby improving the welding accuracy and welding quality.

[0075] In this embodiment, there are two positioning sleeves 85, one located at two diagonally opposite corners of the lower template 1. The sleeve column 851 passes through the ring 852 to connect the first upper template 2 or the second upper template 3 to the lower template 1. In other embodiments, the number and position of the positioning sleeves 85 can be adjusted according to actual needs and are not limited here.

[0076] Specifically, the pressing component 4 includes a pushing mechanism, which acts on the upper surface of the first upper template 2 or the second upper template 3 .

[0077] Thus, the pressing component 4 ensures that the two upper templates of the metal plate welding clamping assembly are in close contact with the lower template 1, thereby improving the welding quality.

[0078] In this embodiment, the pressing mechanism can be pressed by a cylinder or by other means such as hydraulic pressing. In other embodiments, the selection of the pressing mechanism can be adjusted according to actual needs and is not limited here.

[0079] Specifically, the pressing component 4 further includes a clamping member, one end of which is clamped against the lower surface of the lower template 1 , and the other end of which is clamped against the upper surface of the first upper template 2 or the second upper template 3 .

[0080] Therefore, by adding the clamping piece, the two upper templates of the metal plate welding clamping assembly are ensured to be further closely fitted to the lower template 1, thereby further improving the welding quality.

[0081] In this embodiment, the clamping member is a bolt, and a plurality of bolt holes 41 are evenly arranged in the peripheral areas of the first upper template 2 and the second upper template 3 and the corresponding positions of the lower template 1, and the metal plate welding clamping device is further tightened by the bolts.

[0082] Specifically, an air inlet hole 9 is opened on the side of the lower template 1, and the air inlet hole 9 is connected to the cavity 5 between the first upper template 2 or the second upper template 3 and the lower template 1 where the workpiece to be welded is placed.

[0083] Thus, the shielding gas can be input into the welding cavity of the workpiece to be welded through the air inlet 9 to form a protective layer to prevent the surface of the workpiece to be welded from reacting with oxygen in the air to form an oxide film, which affects the welding quality and the performance of the formed workpiece.

[0084] In this embodiment, an air inlet 9 is provided on one side of the lower template 1 . The air inlet 9 is transported to the cavity 5 where the workpiece to be welded is placed through a channel in the lower template 1 , and an air outlet is provided in the cavity.

[0085] Specifically, the metal plate welding fixture device 100 further includes an inert gas supply component, which is connected to the gas inlet 9 and is used to provide inert gas.

[0086] Thus, an inert gas welding environment is formed by providing inert gas through the inert gas supply component, which better protects the welding area, improves welding quality, and prevents welding defects.

[0087] In this embodiment, the inert gas is argon, which is delivered to the cavity 5 where the workpiece to be welded is placed by the inert gas supply component. In other embodiments, the selection of the inert gas can be adjusted according to actual needs and is not limited here.

[0088] Specifically, the metal plate welding fixture device 100 further includes a welding base plate 10 , which is used to place the lower template 1 to ensure that the entire device remains stable during the welding process.

[0089] Specifically, the metal plate welding fixture device 100 further includes a lower template pad 11 , which is located above the lower template 1 and is used to place the workpiece to be welded, ensuring that the workpiece to be welded remains stable during the welding process.

[0090] Specifically, the welding machine for welding the workpiece to be welded can use a laser welding machine, and can adopt collimation welding or galvanometer welding. In other embodiments, the selection of welding method can be adjusted according to actual needs and is not limited here.

[0091] This embodiment also provides a method for using the metal plate welding fixture device 100, which specifically includes:

[0092] Step 1: Place the anode and cathode plates to be welded on the lower template 1 and accurately position them using the positioning pins 83;

[0093] Step 2: Place the first upper template 2 on the lower template 1 and accurately position it using the positioning sleeve 85 and the protrusion 81;

[0094] Step 3: Use a clamping device to press together or use bolts to tighten;

[0095] Step 4: Use the inert gas supply component to deliver argon gas through the gas inlet 9;

[0096] Step 5: Use a welding machine to weld the outer contour and flow channel at the same time;

[0097] Step 6: Replace the second upper template 3 and press it again using the pressing device or tighten it with bolts;

[0098] Step 7: Use a welding machine to weld the remaining contours;

[0099] Step 8. Take out the welded workpiece and inspect its air tightness and appearance.

[0100] The metal plate welding fixture device is easy to operate using the above method, and has the following advantages:

[0101] 1. Double positioning to ensure accurate positioning of the workpiece to be welded;

[0102] 2. Use two integrated upper templates to press together independently to ensure reliable clamping of the fixture and reduce the risk of poor weld penetration after welding;

[0103] 3. It has argon purge function to prevent oxidation of the product surface during laser welding;

[0104] 4. The cathode and anode plates are welded to improve the conductivity of the product.

[0105] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A metal plate welding fixture device, characterized in that: The metal plate welding fixture device includes a lower template, a first upper template, a second upper template and a pressing component; The first upper template is covered on the upper portion of the lower template, and the space between the first upper template and the lower template is used to accommodate a workpiece to be welded. The pressing component is pressed against the first upper template and the lower template. The first upper template is provided with a first through groove for welding the workpiece to be welded. The second upper template is covered on top of the lower template, and the second upper template and the lower template are used to accommodate the workpiece to be welded. The clamping component is pressed against the second upper template and the lower template, and the second upper template is provided with a second through groove for welding the workpiece to be welded.

2. The metal plate welding fixture device according to claim 1, wherein: There are multiple first through grooves, and the multiple first through grooves include a first peripheral contour through groove for welding the peripheral contour of the workpiece to be welded and a flow channel through groove for welding the workpiece to be welded.

3. The metal plate welding fixture device according to claim 1, wherein: The second through groove includes a through groove with a second outer contour for welding the workpiece to be welded.

4. The metal plate welding fixture device according to claim 1, wherein: The metal plate welding fixture device further comprises a plurality of positioning components, which are all connected to the lower template and used for positioning and plugging into the first upper template, the second upper template and / or the workpiece to be welded.

5. The metal plate welding fixture device according to claim 4, characterized in that: The plurality of positioning components include a plurality of positioning pins, and the plurality of positioning pins are all arranged on the lower template. The plurality of positioning pins are located around the workpiece to be welded and plugged into the workpiece to be welded.

6. The metal plate welding fixture device according to claim 4, characterized in that: Several of the positioning components include multiple positioning sleeves, each of the positioning sleeves includes a ring and a sleeve column, the sleeve column is fixed to the lower template, the ring is set at the corresponding position of the first upper template or the second upper template, and the sleeve column is inserted into the ring.

7. The metal plate welding fixture device according to claim 1, wherein: The pressing component includes a pushing mechanism, and the pushing mechanism acts on the upper surface of the first upper template or the second upper template.

8. The metal plate welding fixture device according to claim 1, wherein: The pressing component further includes a clamping member, one end of which is clamped against the lower surface of the lower template, and the other end of which is clamped against the upper surface of the first upper template or the second upper template.

9. The metal plate welding fixture device according to claim 1, wherein: An air inlet is provided on a side of the lower template, and the air inlet is connected to the cavity between the first upper template or the second upper template and the lower template.

10. The metal plate welding fixture device according to claim 9, wherein: The metal plate welding jig device further includes an inert gas supply component connected to the gas inlet hole and configured to provide an inert gas.

Images