Welding positioning device for rear door plate

Abstract

The utility model belongs to the field of welding tools, and provides a welding positioning device for a rear through door plate, which comprises a tool plate, a plurality of supporting pieces and a plurality of pressing pieces, the positioning mechanism and the clamping mechanism are arranged on the tool plate, a positioning block is arranged on the positioning mechanism, an abutting block is arranged on the clamping mechanism, a plurality of guiding pieces are arranged on the tool plate, and the positioning block and the abutting block are both connected to the guiding pieces; the adjusting mechanism and the at least two feeding mechanisms are symmetrically arranged. Compared with the prior art, the connecting piece fixing device has the advantages that the connecting piece is accurately and stably fixed through the positioning block and the abutting block which are located on the same moving straight line, it is guaranteed that the connecting piece with the inclined part stably abuts against and makes contact with the bottom wall of the support through the balance rod, the overall structure is simple, and operation is convenient. Each part can be accurately positioned, supported and clamped, guarantee is provided for subsequent welding quality and welding efficiency, and it is ensured that the quality of welded products can meet the use requirements of customers.

Description

Technical Field

[0001] The utility model belongs to the field of welding tools, and in particular relates to a welding positioning device for a rear door panel. Background Art

[0002] With the rapid development of technology, people's requirements for product quality are increasing day by day, and the welding quality of the product is closely related to the clamping of the product before welding.

[0003] like Figure 1 As shown, the rear door panel is composed of a bracket and connecting parts distributed at both ends thereof. Since the shape and structure of each connecting part are different, and the setting of the inclined part makes it impossible for the welding tool in the prior art to accurately position, support and clamp each part during the clamping and fixing process, which in turn affects the overall stability of the rear door panel. During the welding process, it is very easy for the components to deviate, which affects the overall welding quality and the smoothness of the welding, reduces the welding efficiency, and cannot guarantee that the quality of the welded product can meet the customer's usage requirements. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a welding positioning device for a rear door panel.

[0005] The utility model solves the technical problem by adopting a technical solution, which is to propose a welding positioning device for a rear door panel, wherein the rear door panel has a bracket and connecting pieces distributed at both ends of the bracket, wherein one of the connecting pieces has an inclined portion, and the other connecting piece has a first mounting portion and a second mounting portion, and the welding positioning device includes:

[0006] A tooling plate, configured with a plurality of support members and pressing members, wherein the pressing members can limit the movement of the bracket relative to the support member when the bracket is placed on the support member;

[0007] A positioning mechanism and a clamping mechanism are arranged on the tooling plate, a positioning block is arranged on the positioning mechanism, a pressing block is arranged on the clamping mechanism, a plurality of guide members are arranged on the tooling plate, the positioning block and the pressing block are both connected to the guide members, so that the positioning block and the pressing block can reciprocate on the same straight line; when the guide member drives the pressing block away from the positioning block, the positioning block can extend into the first mounting portion and the second mounting portion, and when the guide member drives the pressing block to press, the first mounting portion and the second mounting portion are limited to generate displacement;

[0008] An adjusting mechanism and at least two symmetrically arranged feeding mechanisms are arranged on the tooling plate, a moving block connected to the guide member is arranged obliquely on the feeding mechanism, the inclined portion is movably clamped on the moving block, and a balancing rod is movably arranged on the adjusting mechanism;

[0009] When the feeding mechanism drives the moving block to approach the bracket, the two ends of the balance rod can be moved respectively to press against the outer walls of the two inclined parts to adjust the two inclined parts to a flush posture, so that the top end of the connecting piece with the inclined parts can be pressed against the bottom wall of the bracket.

[0010] In the above-mentioned welding positioning device for a rear door panel, the guide member includes:

[0011] A driving member, arranged on the tooling plate;

[0012] A guide rail and a guide block, wherein the guide rail is connected to the tooling plate in an inclined or horizontal posture; a mounting seat is provided on the guide block, the positioning block, the tightening block and the moving block are all detachably connected to the mounting seat, and the driving end of the driving member is connected to the mounting seat, and the guide block is movably connected to the guide rail.

[0013] In the above-mentioned welding positioning device for a rear door panel, the support member includes:

[0014] A fixing block is detachably connected to the tooling plate, a limiting groove is formed on the top of the fixing block, and the bracket is movably engaged in the limiting groove;

[0015] A base block and a support block, wherein the base block is connected to the tooling plate, the base block is provided with a plurality of first adjustment holes in the vertical direction, and the support block is provided with a plurality of second adjustment holes in the vertical direction. When the support block is moved to a desired height relative to the base block in the vertical direction, a locking member can be passed through the first adjustment hole and the second adjustment hole to restrict the support block on the base block.

[0016] In the above-mentioned welding positioning device for a rear door panel, the clamping mechanism further includes:

[0017] A clamping cylinder is arranged on the tooling plate, and a connecting plate is arranged at a driving end of the clamping cylinder;

[0018] An extension plate is arranged on the guide block and extends to one side thereof, the mounting seat and the clamping block are both arranged on the extension plate, and the connecting plate is connected to the extension plate, so that the clamping cylinder can drive the clamping block to reciprocate along the length direction of the guide rail.

[0019] In the above-mentioned welding positioning device for a rear door panel, the adjustment mechanism further includes:

[0020] A mounting bracket is arranged on the tooling plate, and the top end of the mounting bracket is arranged obliquely;

[0021] An adjusting cylinder is placed on the top of the mounting bracket, a driving end of the adjusting cylinder is connected to a mounting block, and the middle part of the balancing rod is movably hinged on the mounting block;

[0022] The guide plate is arranged on the adjusting cylinder, and the top wall of the mounting block slides tightly against the bottom wall of the guide plate, so that the mounting block can drive the balancing rod to move back and forth along the tilting direction.

[0023] In the above-mentioned welding positioning device for a rear door panel, the feeding mechanism further includes:

[0024] A reference block connected to the guide block;

[0025] A support plate is arranged on the reference block and extends to the outside thereof, the moving block is connected to the support plate and has a snap-fit ​​groove formed therewith, a locking block is formed on the side wall of the moving block, and a through groove is formed on the inclined portion;

[0026] When the inclined portion is movably sleeved on the reference block and the bottom of the inclined portion extends into the engaging groove, the through groove is movably inserted into the locking block to limit the connection member with the inclined portion from rotating during welding.

[0027] In the above-mentioned welding positioning device for the rear door panel, a tilting block is also provided on the tooling plate, a limit block is installed on the tilting block, a buffer pad is connected between the limit block and the tilting block, and the reference block movably abuts against the limit block to limit the moving distance of the inclined portion.

[0028] In the above-mentioned welding positioning device for a rear door panel, the positioning mechanism further includes:

[0029] A first adjustment block, detachably connected to the tooling plate;

[0030] The second adjusting block is arranged in an L shape on the first adjusting block. The second adjusting block can move in a vertical direction so that the second adjusting block can be movably pressed against different positions on the second mounting portion.

[0031] In the above-mentioned welding positioning device for a rear door panel, the pressing member comprises:

[0032] A pressing cylinder is arranged on the tooling plate, and a driving end of the pressing cylinder is connected to a rotating block;

[0033] A pressing block, detachably connected to the end of the rotating block away from the pressing cylinder, the pressing block movably pressing against the top wall of the bracket to fix the bracket on the support member;

[0034] A connecting block, one end of which is hinged to the pressing cylinder, and the other end of which is hinged to the end of the rotating block away from the pressing block.

[0035] Compared with the prior art, the advantage of the present invention is that the guiding effect is given to the positioning block and the clamping block when they move by utilizing the guide member, thereby ensuring that after the positioning of the connecting member is completed, the clamping block on the same moving straight line can accurately and stably fix the connecting member, thereby ensuring the accuracy of the placement of the connecting member and the bracket before welding; similarly, when the moving block drives the inclined portion to approach the bracket, the placement position of the two inclined portions is adjusted by utilizing the balance bar on the adjustment mechanism, so as to ensure that the connecting member with the inclined portion is stably pressed against the bottom wall of the bracket. The overall structure of the welding positioning device is simple, which effectively ensures that each part can be accurately positioned, supported and clamped, thereby improving the overall stability of the rear door panel, providing a guarantee for the quality and efficiency of subsequent welding, and ensuring that the quality of the product after welding can meet the customer's usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram after the rear door panel is welded;

[0037] Figure 2 is a stereogram of the present application;

[0038] Figure 3 This is a view of the installation structure of the clamping block, the positioning block and the guide piece on the tooling plate;

[0039] Figure 4 It is a schematic diagram of the structure of the guide member, the first adjustment block and the second adjustment block on the tooling plate;

[0040] Figure 5 This is the installation structure view of the adjustment mechanism and the feeding mechanism;

[0041] Figure 6 This is a view of the installation structure between the support block and the clamping piece.

[0042] In the figure, 1, rear door panel; 10, bracket; 11, connecting member; 110, inclined portion; 110a, through groove; 111, first mounting portion; 112, second mounting portion;

[0043] 2. Tooling plate; 20. Support member; 200. Fixed block; 201. Limiting groove; 202. Base block; 203. Support block; 204. First adjusting hole; 205. Second adjusting hole; 21. Pressing member; 210. Pressing cylinder; 211. Rotating block; 212. Pressing block; 213. Connecting block; 22. Guide member; 220. Driving member; 221. Guide rail; 222. Guide block; 223. Mounting seat; 23. Tilt block; 24. Limiting block; 25. Buffer pad;

[0044] 3. Positioning mechanism; 30. Positioning block; 31. First adjusting block; 32. Second adjusting block;

[0045] 4. Clamping mechanism; 40. Clamping block; 41. Clamping cylinder; 42. Connecting plate; 43. Extension plate;

[0046] 5. Adjustment mechanism; 50. Balance bar; 51. Mounting bracket; 52. Adjustment cylinder; 53. Mounting block; 54. Guide plate;

[0047] 6. Feeding mechanism; 60. Moving block; 61. Reference block; 62. Support plate; 63. Engaging groove; 64. Locking block. DETAILED DESCRIPTION

[0048] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0049] like Figures 1 to 6As shown, the utility model is a welding positioning device for a rear door panel 1, the rear door panel 1 has a bracket 10 and connecting pieces 11 distributed at both ends of the bracket 10, one of the connecting pieces 11 has an inclined portion 110, and the other connecting piece 11 has a first mounting portion 111 and a second mounting portion 112, wherein the welding positioning device comprises: a tooling plate 2, which is provided with a plurality of supporting pieces 20 and a pressing piece 21, and the pressing piece 21 can limit the movement of the bracket 10 relative to the supporting piece 20 when the bracket 10 is placed on the supporting piece 20; a positioning mechanism 3 and a clamping mechanism 4, which are arranged on the tooling plate 2, the positioning mechanism 3 is provided with a positioning block 30, the clamping mechanism 4 is provided with a pressing block 40, and the tooling plate 2 is provided with a plurality of guide pieces 22, the positioning block 30 and the pressing block 40 are both connected to the guide piece 22, so that the positioning block 30 and the pressing block 40 can reciprocate on the same straight line When the guide member 22 drives the pressing block 40 away from the positioning block 30, the positioning block 30 can extend into the first mounting portion 111 and the second mounting portion 112, and when the guide member 22 drives the pressing block 40 to press tightly, the first mounting portion 111 and the second mounting portion 112 are limited to be displaced; the adjusting mechanism 5 and at least two symmetrically arranged feeding mechanisms 6 are arranged on the tooling plate 2, and the feeding mechanism 6 is inclinedly provided with a moving block 60 connected to the guide member 22, and the inclined portion 110 is movably connected to the moving block 60, and the adjusting mechanism 5 is movably provided with a balancing rod 50; when the feeding mechanism 6 drives the moving block 60 to approach the bracket 10, the two ends of the balancing rod 50 can be movably pressed against the outer walls of the two inclined portions 110 respectively, so as to adjust the two inclined portions 110 to a flush posture, so that the top end of the connecting member 11 with the inclined portion 110 can be close to the bottom wall of the bracket 10.

[0050] It is worth noting that Figure 1 As shown, this solution mainly realizes that the connecting portion with the inclined portion 110 is welded to one end of the bracket 10, and the first mounting portion 111 and the second mounting portion 112 at the other end of the bracket 10 are welded. Before this, the inclined portion 110 is pre-welded to the sheet metal. Similarly, the first mounting portion 111, the second mounting portion 112 and the bracket 10 are pre-welded together by laser welding. Therefore, before welding, Figures 2 to 6As shown, the support member 20 is used to support the bracket 10 as a whole, ensuring that the bracket 10 can be stably fixed under the operation of the clamping member 21. At the same time, the guide member 22 is used in this solution to enable the positioning block 30 and the clamping block 40 to move on the same straight line, thereby ensuring that the positioning and clamping of the product are at the same position, effectively avoiding the deformation of the product after welding due to uneven force, and ensuring that the quality of the rear door panel 1 is not affected; for the connecting member 11 with the inclined portion 110, the present solution uses the inclined moving block 60 to stably support the inclined portion 110, that is, before welding, the connecting member 11 with the inclined portion 110 is placed on the moving block 60 in advance, and as the feeding mechanism 6 cooperates with the driving of the guide member 22, the connecting member 1 with the inclined portion 110 1 gradually approaches the bracket 10. At the same time, the adjustment mechanism 5 drives the balance bar 50 to move. Finally, the two symmetrically placed connecting members 11 with inclined portions 110 are respectively movably pressed against the two ends of the balance bar 50. Under the adjustment of the balance bar 50, it is effectively ensured that the two connecting members 11 are in a flush state (that is, the side ends and the top ends are in an aligned position), thereby ensuring the accuracy of the placement position of the connecting member 11 with the inclined portion 110 relative to the bracket 10, which also provides a guarantee for the subsequent welding quality. It can be seen that the overall structure of the welding positioning device is simple, which effectively ensures that each part can be accurately positioned, supported and clamped, improves the overall stability of the rear door panel 1, and provides a guarantee for the quality and efficiency of subsequent welding, ensuring that the quality of the welded product can meet the customer's use requirements.

[0051] The support member 20 includes: a fixed block 200, which is detachably connected to the tooling plate 2, and a limiting groove 201 is formed at the top of the fixed block 200, and the bracket 10 is movably clamped in the limiting groove 201; a base block 202 and a support block 203, the base block 202 is connected to the tooling plate 2, and a plurality of first adjustment holes 204 are distributed in the vertical direction of the base block 202, and a plurality of second adjustment holes 205 are distributed in the vertical direction of the support block 203. When the support block 203 is moved to a desired height relative to the base block 202 in the vertical direction, a locking member can be passed through the first adjustment hole 204 and the second adjustment hole 205 to limit the support block 203 on the base block 202.

[0052] like Figure 1 and Figure 2As shown, the stability of the bracket 10 as the main part is very important for the overall welding quality. Therefore, during the placement process, the limiting groove 201 is used to limit the bracket 10 to a certain extent. Since the bracket 10 in this solution is set in a rectangular shape as a whole, it is only necessary to place the fixing block 200 at the bottom of the two adjacent sides of the bracket 10 to complete the overall limiting of the bracket 10. At the same time, the opposite side of the fixing block 200 placed at the bottom of the bracket 10 can be installed with the base block 202 and the support block 203. Figure 2 and Figure 6 When the support block 203 moves in the vertical direction, the first adjustment holes 204 and the second adjustment holes 205 are aligned in different positions, and the support block 203 can be fixed on the base block 202 through the locking member. That is to say, the adjustment of the support block 203 can support one side of the bracket 10 at different heights. This method effectively ensures that the bracket 10 is placed in a horizontal posture as a whole, which also provides a guarantee for the subsequent welding quality and stability between the connecting piece 11 and the bracket 10.

[0053] Preferably, the locking member in this solution can adopt a locking structure such as a bolt, a screw and a locking nut to fix the support block 203 after the height adjustment on the base block 202 to ensure the stability of the bracket 10.

[0054] The guide member 22 includes: a driving member 220, which is arranged on the tooling plate 2; a guide rail 221 and a guide block 222, the guide rail 221 is connected to the tooling plate 2 in an inclined or horizontal posture; a mounting seat 223 is provided on the guide block 222, the positioning block 30, the clamping block 40 and the moving block 60 can all be detachably connected to the mounting seat 223, and the driving end of the driving member 220 is connected to the mounting seat 223, and the guide block 222 is movably connected to the guide rail 221.

[0055] like Figures 2 to 4As shown, in the present solution, the positioning block 30, the pressing block 40 and the moving block 60 respectively position, fix and transfer the connecting member 11, and the stability during operation can be ensured by the cooperation between the guide block 222 and the guide rail 221. Specifically, under the drive of the driving member 220, the guide block 222 can reciprocate along the length direction of the guide rail 221. It should be noted that in the present solution, a plurality of guide blocks 222 can be arranged on the guide rail 221, that is, the positioning block 30, the pressing block 40 and the moving block 60 can be arranged on the guide rail 221. The moving block 60 is installed on different guide blocks 222. For this reason, the present solution realizes that on the same guide rail 221, different guide blocks 222 respectively drive the positioning block 30 and the clamping block 40 to realize the positioning and clamping of the connecting member 11, which not only plays a guiding effect when the positioning block 30 and the clamping block 40 move, but also effectively ensures that the positioning block 30 and the clamping block 40 act at the same position of the connecting member 11, avoiding deformation or even damage and scrapping of the connecting member 11 due to the mutual misalignment of the forces exerted by the two.

[0056] Preferably, the positioning block 30 in the present embodiment is formed with a positioning hole (not shown in the figure), and raised columns (not shown in the figure) are formed on both side walls of the first mounting portion 111. Therefore, as the positioning block 30 and the clamping block 40 move, the positioning hole can be movably mounted on the raised column of the first mounting portion 111, and the other side is clamped by the clamping block 40. Combined with the laser pre-welding between the first mounting portion 111 and the bracket 10, the stability of the position of the first mounting portion 111 is effectively guaranteed, thereby providing a guarantee for the quality of subsequent welding operations.

[0057] The positioning mechanism 3 also includes: a first adjustment block 31, which is detachably connected to the tooling plate 2; a second adjustment block 32, which is L-shaped and arranged on the first adjustment block 31, and the second adjustment block 32 can move in the vertical direction so that the second adjustment block 32 can be movably pressed against different positions on the second mounting portion 112.

[0058] Further, if Figure 4 As shown, on the basis of using the same guide member 22 structure as mentioned above, this solution utilizes the adjustment of the first adjusting block 31 in the vertical direction relative to the second adjusting block 32, which can also ensure that the positioning block 30 and the first adjusting block 31 are positioned and pressed against the same position of the second mounting portion 112, wherein the first adjusting block 31 can drive the second adjusting block 32 to adjust its position on the tooling plate 2, and with the adjustment of the second adjusting block 32 in the vertical direction, the second adjusting block 32 can be accurately pressed against the second mounting portion 112. Similarly, for the positioning and pressing of the second mounting portion 112, Figure 4A positioning column (not marked in the figure) is connected to the positioning block 30 shown, and a positioning hole (not shown in the figure) of the same structure as above is formed on the second mounting portion 112. The positioning column is inserted into the positioning hole, and the second adjustment block 32 is pressed against the second mounting portion 112, and the laser pre-welding between the second mounting portion 112 and the bracket 10 is cooperated to ensure the accuracy of the positions of the first mounting portion 111 and the second mounting portion 112 relative to the bracket 10, thereby ensuring the accuracy of the relative positions of the first mounting portion 111 and the second mounting portion 112, providing a guarantee for the subsequent stable welding between the two.

[0059] It should be noted that the structure of the second adjustment block 32 in the present solution for adjusting the second adjustment block 32 relative to the first adjustment block 31 in the vertical direction is the same as that of the above-mentioned support block 203 and base block 202, and the adjustment principle is also the same, which will not be described in detail here.

[0060] The clamping mechanism 4 also includes: a clamping cylinder 41, which is arranged on the tooling plate 2, and a connecting plate 42 is arranged at the driving end of the clamping cylinder 41; an extension plate 43, which is arranged on the guide block 222 and extends to one side thereof, and the mounting seat 223 and the clamping block 40 are both arranged on the extension plate 43, and the connecting plate 42 is connected to the extension plate 43, so that the clamping cylinder 41 can drive the clamping block 40 to reciprocate along the length direction of the guide rail 221.

[0061] In order to achieve different displacements of the clamping block 40 and the positioning block 30, the present solution is provided with a clamping cylinder 41 on one side of the tooling plate 2 located at the above-mentioned driving member 220. Since the driving end of the driving member 220 is colinearly arranged with the guide rail 221, the positioning block 30 can be directly driven to move in cooperation with the guide block 222. When the clamping cylinder 41 is driven, the extension plate 43 can be pushed to move, thereby making the clamping block 40 reciprocate along the length direction of the guide rail 221. This structure not only avoids position interference when the positioning block 30 is driven by the above-mentioned driving member 220, but also can utilize the space formed when the clamping block 40 is away from the positioning block 30, thereby ensuring that the bracket 10 cooperates with the first mounting portion 111 and the second mounting portion 112 to be accurately and stably placed between the positioning block 30 and the clamping block 40, thereby preventing the first mounting portion 111 and the second mounting portion 112 from being damaged by collision due to position interference, thereby ensuring that the quality of the product is not affected.

[0062] The feeding mechanism 6 also includes: a reference block 61, connected to the guide block 222; a support plate 62, arranged on the reference block 61 and extending to the outside thereof, a moving block 60 connected to the support plate 62, and formed with a snap-fit ​​groove 63, and a locking block 64 is formed on the side wall of the moving block 60, and a through groove 110a is formed on the inclined portion 110; when the inclined portion 110 is movably sleeved on the reference block 61 and the bottom of the inclined portion 110 extends into the snap-fit ​​groove 63, the through groove 110a is movably inserted into the locking block 64 to limit the rotation of the connecting member 11 with the inclined portion 110 during welding.

[0063] Similarly, if Figure 2 and Figure 5 As shown, the reference block 61, the support plate 62 and the moving block 60 in this solution are all arranged tilted. It should be noted that the guide member 22 is also used for the movement of the moving block 60 in this solution, which also makes the guide member 22 of this part inclined. Figure 5 In the installation structure shown in the figure, before welding, the connecting member 11 with the inclined portion 110 is pre-placed on the support plate 62. During the movement along the inclined direction of the support plate 62, the bottom of the inclined portion 110 is gradually engaged in the engaging groove 63, and then the through groove 110a at the end of the inclined portion 110 is movably inserted into the locking block 64, that is, Figure 5 As shown in the state, the structure has a fixing effect on the connecting member 11 with the inclined portion 110, ensuring that the connecting member 11 will not rotate or move during the subsequent welding process. For this reason, driven by the inclined guide member 22, the connecting portion with the inclined portion 110 gradually approaches and presses against the bracket 10, and finally determines the welding position between the two.

[0064] The adjustment mechanism 5 also includes: a mounting bracket 5110, which is arranged on the tooling plate 2, and the top end of the mounting bracket 5110 is inclined; an adjusting cylinder 52, which is placed on the top end of the mounting bracket 5110, and the driving end of the adjusting cylinder 52 is connected to a mounting block 53, and the middle position of the balance bar 50 is movably hinged on the mounting block 53; a guide plate 54, which is arranged on the adjusting cylinder 52, and the top wall of the mounting block 53 slides against the bottom wall of the guide plate 54, so that the mounting block 53 can drive the balance bar 50 to move back and forth along the inclined direction.

[0065] Continue to refer Figure 5Since both sides of the bracket 10 need to be welded with the connecting piece 11 with the inclined portion 110, the feeding mechanism 6 in the present solution is provided with two. In the process of the moving block 60 driving the connecting piece 11 to approach the bracket 10, the adjusting cylinder 52 which is also inclined drives the balancing rod 50 to approach the two connecting pieces 11. When the ends of the two connecting pieces 11 are respectively pressed against the balancing rod 50, since the middle position of the balancing rod 50 is movably hinged on the mounting block 53, the two connecting pieces 11 with the inclined portion 110 can be adjusted to a flush posture (that is, the end and the top end pressed against the balancing rod 50 can be kept aligned) with the rotation adjustment of the balancing rod 50 (lever principle), and then with the push of the guide member 22, it can be ensured that the two connecting pieces 11 with the inclined portion 110 are stably pressed against the bottom wall of the bracket 10, which provides a guarantee for the subsequent product welding quality.

[0066] Preferably, the guide plate 54 can provide a guiding effect when the mounting block 53 drives the balance rod 50 to move, and can also play a certain dust-proof effect, preventing welding impurities from entering between the mounting block 53 and the adjusting cylinder 52 (i.e., preventing the extension and contraction of the driving end from being affected), thereby improving the stability of the balance rod 50 during operation.

[0067] The tooling plate 2 is also provided with a tilting block 23 , on which a limit block 24 is mounted, and a buffer pad 25 is connected between the limit block 24 and the tilting block 23 , and the reference block 61 movably abuts against the limit block 24 to limit the moving distance of the tilting portion 110 .

[0068] Further, if Figure 5 As shown, when the guide member 22 drives the connecting member 11 with the inclined portion 110 to approach and press against the bottom wall of the bracket 10, the movable abutment between the reference block 61 and the limit block 24 limits the displacement of the movable block 60 and the connecting member 11 on the reference block 61, effectively avoiding the position interference between the connecting member 11 with the inclined portion 110 and the bracket 10 due to excessive displacement, and the design of the buffer pad 25 also reduces the impact force between the reference block 61 and the limit block 24, preventing the impact force of the two from being too large and causing the connecting member 11 to be disengaged from the engaging groove 63, thereby greatly improving the smoothness and stability of the structure during operation.

[0069] The clamping member 21 includes: a clamping cylinder 210, which is arranged on the tooling plate 2, and the driving end of the clamping cylinder 210 is connected to a rotating block 211; a clamping block 212, which is detachably connected to the end of the rotating block 211 away from the clamping cylinder 210, and the clamping block 212 is movably pressed against the top wall of the bracket 10 to fix the bracket 10 on the support member 20; a connecting block 213, one end of the connecting block 213 is hinged to the clamping cylinder 210, and the other end is hinged to the end of the rotating block 211 away from the clamping block 212.

[0070] like Figure 2 and Figure 6 As shown, after the positions to be welded of the above-mentioned rear door panels 1 are positioned and clamped, the clamping operation can be started. Specifically, when the driving end of the clamping cylinder 210 moves in the vertical direction, the clamping block 212 can swing relative to the hinged connecting block 213, so that the end of the clamping block 212 away from the driving end of the clamping cylinder 210 approaches the top wall of the bracket 10, and finally drives the clamping block 212 to be movable and pressed on the bracket 10, ensuring that the overall posture remains stable during welding; since the clamping block 212 plays a decisive role in the clamping of the bracket 10, the present solution detachably connects the clamping block 212 to the end of the rotating block 211. When the clamping block 212 is worn or damaged, the worker can replace it by quick disassembly, which is convenient for installation and disassembly, and also ensures the stability of the clamping block 212 when pressing the bracket 10.

[0071] It should be noted that the driving member 220 in this solution can be replaced by other driving devices such as hydraulic drive, cylinder drive, etc.

[0072] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0073] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A welding positioning device for a rear door panel, the rear door panel having a bracket and connecting pieces distributed at both ends of the bracket, one of the connecting pieces having an inclined portion, and the other connecting piece having a first mounting portion and a second mounting portion, characterized in that: The welding positioning device comprises: A tooling plate, configured with a plurality of support members and pressing members, wherein the pressing members can limit the movement of the bracket relative to the support member when the bracket is placed on the support member; A positioning mechanism and a clamping mechanism are arranged on the tooling plate, a positioning block is arranged on the positioning mechanism, a pressing block is arranged on the clamping mechanism, a plurality of guide members are arranged on the tooling plate, the positioning block and the pressing block are both connected to the guide members, so that the positioning block and the pressing block can reciprocate on the same straight line; when the guide member drives the pressing block away from the positioning block, the positioning block can extend into the first mounting portion and the second mounting portion, and when the guide member drives the pressing block to press, the first mounting portion and the second mounting portion are limited to generate displacement; An adjusting mechanism and at least two symmetrically arranged feeding mechanisms are arranged on the tooling plate, a moving block connected to the guide member is arranged obliquely on the feeding mechanism, the inclined portion is movably clamped on the moving block, and a balancing rod is movably arranged on the adjusting mechanism; When the feeding mechanism drives the moving block to approach the bracket, the two ends of the balance rod can be moved respectively to press against the outer walls of the two inclined parts to adjust the two inclined parts to a flush posture, so that the top end of the connecting piece with the inclined parts can be pressed against the bottom wall of the bracket.

2. A welding positioning device for a rear door panel according to claim 1, characterized in that: The guide member comprises: A driving member, arranged on the tooling plate; A guide rail and a guide block, wherein the guide rail is connected to the tooling plate in an inclined or horizontal posture; a mounting seat is provided on the guide block, the positioning block, the tightening block and the moving block are all detachably connected to the mounting seat, and the driving end of the driving member is connected to the mounting seat, and the guide block is movably connected to the guide rail.

3. A welding positioning device for a rear door panel according to claim 1, characterized in that: The support member comprises: A fixing block is detachably connected to the tooling plate, a limiting groove is formed on the top of the fixing block, and the bracket is movably engaged in the limiting groove; A base block and a support block, wherein the base block is connected to the tooling plate, the base block is provided with a plurality of first adjustment holes in the vertical direction, and the support block is provided with a plurality of second adjustment holes in the vertical direction. When the support block is moved to a desired height relative to the base block in the vertical direction, a locking member can be passed through the first adjustment hole and the second adjustment hole to restrict the support block on the base block.

4. A welding positioning device for a rear door panel according to claim 2, characterized in that: The clamping mechanism also includes: A clamping cylinder is arranged on the tooling plate, and a connecting plate is arranged at a driving end of the clamping cylinder; An extension plate is arranged on the guide block and extends to one side thereof, the mounting seat and the clamping block are both arranged on the extension plate, and the connecting plate is connected to the extension plate, so that the clamping cylinder can drive the clamping block to reciprocate along the length direction of the guide rail.

5. The welding positioning device for a rear door panel according to claim 1, characterized in that: The regulating mechanism also includes: A mounting bracket is arranged on the tooling plate, and the top end of the mounting bracket is arranged obliquely; An adjusting cylinder is placed on the top of the mounting bracket, a driving end of the adjusting cylinder is connected to a mounting block, and the middle part of the balancing rod is movably hinged on the mounting block; The guide plate is arranged on the adjusting cylinder, and the top wall of the mounting block slides tightly against the bottom wall of the guide plate, so that the mounting block can drive the balancing rod to move back and forth along the tilting direction.

6. A welding positioning device for a rear door panel according to claim 2, characterized in that: The feeding mechanism also includes: A reference block connected to the guide block; A support plate is arranged on the reference block and extends to the outside thereof, the moving block is connected to the support plate and has a snap-fit ​​groove formed therewith, a locking block is formed on the side wall of the moving block, and a through groove is formed on the inclined portion; When the inclined portion is movably sleeved on the reference block and the bottom of the inclined portion extends into the engaging groove, the through groove is movably inserted into the locking block to limit the connection member with the inclined portion from rotating during welding.

7. A welding positioning device for a rear door panel according to claim 6, characterized in that: The tooling plate is also provided with an inclined block, a limit block is installed on the inclined block, a buffer pad is connected between the limit block and the inclined block, and the reference block movably abuts against the limit block to limit the moving distance of the inclined portion.

8. The welding positioning device for a rear door panel according to claim 1, characterized in that: The positioning mechanism also includes: A first adjustment block, detachably connected to the tooling plate; The second adjusting block is arranged in an L shape on the first adjusting block. The second adjusting block can move in a vertical direction so that the second adjusting block can be movably pressed against different positions on the second mounting portion.

9. The welding positioning device for a rear door panel according to claim 1, characterized in that: The pressing member comprises: A pressing cylinder is arranged on the tooling plate, and a driving end of the pressing cylinder is connected to a rotating block; A pressing block, detachably connected to the end of the rotating block away from the pressing cylinder, the pressing block movably pressing against the top wall of the bracket to fix the bracket on the support member; A connecting block, one end of which is hinged to the pressing cylinder, and the other end of which is hinged to the end of the rotating block away from the pressing block.

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