A welding fixture side positioning mechanism

Abstract

The utility model relates to a kind of welding fixture side positioning mechanism, with pedestal, the pedestal is composed of bottom plate, cushioning block and top plate;The cushioning block is fixedly arranged at the top of bottom plate, the top plate is fixedly arranged at the top of cushioning block;Driving device is arranged on the top of top plate, driving device is provided with the slide that can move back and forth, the support seat is fixed in the top of slide, the part of support seat one side close to front end is fixed with vertical plate, the vertical plate is vertically arranged, its top is higher than the top of support seat, the part of vertical plate side face located above the top of support seat is provided with buffer cylinder, the buffer cylinder is horizontally arranged before and after, and its buffer column faces forward.This kind of welding fixture side positioning mechanism structure is simple, guarantees the accuracy of the matching position between buffer column end and product, can be adapted to the lateral limiting of different sheet metal parts, is flexible to use, reduce the use cost of fixture tooling, improve the processing efficiency of sheet metal part.

Description

Technical Field

[0001] This utility model relates to welding fixtures for automotive sheet metal parts, and more particularly to a side positioning mechanism for a welding fixture. Background Technology

[0002] Cars have gradually become a common means of transportation in people's daily lives.

[0003] The car frame is a crucial component of the car body. To ensure the strength and safety of the car's structure, the car frame is made of metal components assembled from individual sheet metal parts. Each individual sheet metal part constitutes a different structural area. These sheet metal parts are constructed from metal sheets through processes such as cutting, stamping, assembly, and welding. To ensure strength, reinforcing ribs or plates are welded into the interior of the sheet metal parts. These reinforcing components are individually machined, then assembled into the interior of the sheet metal parts and finally fixed together by welding.

[0004] To facilitate the assembly and welding of automotive sheet metal reinforcements and ensure welding accuracy in assembly machines, specialized fixtures are used in the welding of sheet metal parts, such as reinforcements, during automotive manufacturing. These fixtures are equipped with supports and quick-release clamps. The supports hold the sheet metal parts placed on top of them, and the quick-release clamps clamp and other tools then secure them. The supports have a relatively simple design and can reliably support the sheet metal parts placed on top of them. For the side positioning of the sheet metal parts, a common method is to design a side limiting frame that matches the local contour of the side of the sheet metal part. The side limiting frame, in conjunction with the supports, supports the sheet metal parts and limits their horizontal position. Finally, the quick-release clamps clamp and secure the sheet metal parts. However, this type of side limiting frame is specific; different sheet metal parts require different side limiting frames, resulting in high costs and limited application flexibility. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a welding fixture side positioning mechanism that is flexible in application and can quickly position the side of the welded part.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: A welding fixture side positioning mechanism includes a base, which consists of a bottom plate, a shim block, and a top plate. The shim block is fixedly mounted on the top of the bottom plate, and the top plate is fixedly mounted on the top of the shim block. A driving device is provided on the top of the top plate, and a slide block capable of moving back and forth is provided on the driving device. A support seat is fixed on the top of the slide block. A vertical plate is fixed on one side of the support seat near the front end. The vertical plate is vertically arranged, and its top is higher than the top of the support seat. A buffer cylinder is provided on the side of the vertical plate above the top of the support seat. The buffer cylinder is horizontally arranged front and back, with its buffer column facing forward.

[0007] Furthermore, the driving device includes a driving cylinder, which is fixedly mounted on the front end of the top plate. A linear guide rail is provided on the top of the base. The linear guide rail consists of a slide rail and a slider. The slider slides in cooperation with the slide rail. The slide rail is longitudinally fixed at the top center of the top plate and corresponds to the piston rod of the driving cylinder. The slide block is fixedly mounted on the top of the slider. The piston rod of the driving cylinder is fixedly connected to the slide block. The driving cylinder can drive the slide block to move back and forth.

[0008] Furthermore, a fixed seat is provided at the center of the top of the top plate near the front end, and the buffer cylinder is fixedly installed on the front side of the fixed seat; a transition port with front and rear communication is provided at the center of the end of the fixed seat, and the piston rod of the drive cylinder passes through the transition port and is fixedly connected to a slide seat provided on the other side of the fixed seat.

[0009] Furthermore, the piston rod and the slide are fixedly connected together by a push-pull joint. The top of the push-pull joint has a "T"-shaped structure, and its front end is provided with a "T"-shaped pull opening that is connected vertically. The outer end of the piston rod is provided with a "T"-shaped pull head that fits into the "T"-shaped pull opening vertically.

[0010] Furthermore, symmetrical limiting blocks are provided at the front and rear ends of the top of the top plate near the side. A first buffer block is fixed on one side of the limiting block corresponding to the slide block, and a second buffer block is provided at the front and rear ends of the slide block corresponding to the front and rear of the first buffer block.

[0011] Furthermore, a limit switch is provided on one side of the top plate near the front end, and a limit contact plate is provided on the slide block on the same side as the limit switch, with the limit contact plate corresponding to the front and rear of the limit switch; a side guard plate is provided on the other side of the top plate corresponding to the limit switch.

[0012] Furthermore, the limit switch is fixedly mounted on one side of the top plate by a mounting bracket.

[0013] Furthermore, a guard plate is provided at the rear end of the slide block, and the slide rail is located directly below the guard plate.

[0014] Furthermore, a protective cover is provided on the outside of the buffer cylinder, and the protective cover is fixedly connected to the upright plate by screws.

[0015] Compared with the prior art, the advantages of this utility model are: the side positioning mechanism of this welding fixture has a simple structure, and the buffer cylinder can quickly limit the sheet metal parts laterally. The buffer column of the buffer cylinder can effectively control the force and avoid damage to the side of the sheet metal parts. The buffer cylinder itself can be adjusted in the front and back direction by driving the cylinder, and the buffer column can also move back and forth to ensure the accuracy of the fit between the end of the buffer column and the product. It can be adapted to the lateral limiting of different sheet metal parts, is flexible in use, reduces the use cost of fixtures and tooling, and improves the processing efficiency of sheet metal parts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the front axial side structure of a welding fixture side positioning mechanism according to this utility model; Figure 2 This is a schematic diagram of the back axial side structure of a welding fixture side positioning mechanism according to this utility model; Figure 3 This is a schematic diagram of the top structure of the base in a side positioning mechanism for a welding fixture according to this utility model; Figure 4 This is a schematic diagram of the support seat assembly structure in a side positioning mechanism of a welding fixture according to this utility model; Figure 5 This is a schematic diagram of the top structure of the top plate in a side positioning mechanism for a welding fixture according to this utility model.

[0018] In the diagram: 1. Base; 11. Base plate; 12. Elevating block; 13. Top plate; 14. Side guard plate; 15. Limiting block; 151. First buffer block; 16. Fixed seat; 161. Connecting groove; 2. Drive cylinder; 21. Push-pull joint; 3. Slide seat; 31. Second buffer block; 32. Guard plate; 33. Limiting contact plate; 4. Support seat; 41. Vertical plate; 42. Protective cover; 5. Linear guide rail; 51. Slide rail; 52. Slider; 6. Buffer cylinder; 61. Buffer column; 7. Limit switch; 71. Fixed frame. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships commonly used when the product of the present invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0021] Furthermore, the use of terms such as "horizontal" or "vertical" does not imply that the component must be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure or component must be completely horizontal, but can be slightly tilted.

[0022] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0023] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Example:

[0025] Please refer to the instruction manual attached. Figure 1 and 2 As shown, the instruction manual is attached. Figure 1 and 2 The diagram shows a side positioning mechanism for a welding fixture according to this utility model. This mechanism has a base 1, which consists of a base plate 11, a shim block 12, and a top plate 13. The base plate 11 has several vertically connected fixing holes near its sides, symmetrically arranged. These holes can be fixedly mounted on the top operating platform of the fixture using bolts. The bottom of the base plate 11 has several vertically connected countersunk holes arranged between the symmetrical fixing holes. The shim block 12 is fixedly mounted on the top of the base plate 11 and is also positioned between the symmetrical fixing holes. The height of the shim block 12 can be flexibly adjusted as needed, thus providing flexibility in use. To facilitate the fixed installation of the shim block 12 on the base plate 11, the bottom and top of the shim block 12 are provided with multiple threaded connection holes. The base plate 11 is fixedly connected to the corresponding threaded connection holes on the bottom of the shim block 12 by bolts passing through the countersunk holes at its bottom. The top plate 13 is fixedly installed on the top of the shim block 12. To facilitate the fixed connection of the top plate 13 to the shim block 12, the top plate 13 is provided with multiple countersunk holes that are connected vertically. The top plate 13 is fixedly connected to the corresponding threaded connection holes on the top surface of the bottom shim block 12 by bolts passing through the countersunk holes at its top. The top of the top plate 13 is provided with a driving device, and the driving device is provided with a slide block 3 that can move back and forth. See the appendix of the instruction manual. Figure 3 As shown, the driving device in this embodiment includes a driving cylinder 2, which is fixedly mounted on the top front end of the top plate 13. (Refer to the appendix of the instruction manual.) Figure 1 and 5 As shown, a fixing seat 16 is fixedly connected to the top plate 13 near the center of its front end. The fixing seat 16 is vertically arranged and is fixedly connected to the top plate 13 by screws, making it easy to assemble and disassemble. The buffer cylinder 6 is fixedly installed on the front of the fixing seat 16. A transition port with front and rear communication is provided at the center of the end of the fixing seat 16. The piston rod of the drive cylinder 2 passes through the transition port. A linear guide rail is provided on the top of the base 1, and the linear guide rail is arranged on both sides of the fixing seat 16 relative to the drive cylinder 2. See the appendix of the instruction manual. Figure 3As shown, the linear guide rail consists of a slide rail 51 and a slider 52. The slider 52 slides in conjunction with the slide rail 51. The slide rail 51 is longitudinally fixed at the top center of the top plate 13 and is bolted to the top plate 13. The slide rail 51 corresponds to the piston rod of the drive cylinder 2. The slide block 3 is fixedly mounted on the top of the slider 52 and bolted to the top of the slider 52, facilitating easy assembly and disassembly. The slider 52 can drive the slide block 3 to move synchronously on the slide rail 51. The piston rod of the drive cylinder 2 passes through the transition port and is fixedly connected to the slide block 3 located on the other side of the fixed seat 16. The drive cylinder 2 can drive the slide block 3 to move back and forth through its piston rod. For convenient connection and disassembly between the piston rod and the slide block 3, please refer to the appendix of the instruction manual. Figure 3As shown, the piston rod and the slide block 3 are fixedly connected together by a push-pull joint 21. The top of the push-pull joint 21 has a T-shaped structure, which is fixedly connected to the front end of the slide block 3 by bolts. The front end of the push-pull joint 21 is provided with a T-shaped pull opening that is connected vertically. The outer end of the piston rod is provided with a T-shaped pull head that fits into the T-shaped pull opening vertically. The T-shaped pull head and the end of the piston rod are threaded together for easy disassembly and assembly. The T-shaped pull head is embedded in the T-shaped pull head from top to bottom. The piston rod of the drive cylinder 2 pushes the slide block 3 to move through the T-shaped pull head 21. In order to prevent welding slag from falling on the slide rail 51 during welding and affecting the movement of the slider 52, a guard plate 32 is provided at the rear end of the slide block 3. The slide rail 51 is located directly below the guard plate 32. The slide rail 51 provides effective protection. To ensure the safety of the slide block 3's forward and backward movement, a limit switch 7 is provided on one side of the top plate 13 near the front end. It should be noted that in actual application, the limit switch 7 is installed on the other side of the top plate 13 corresponding to the welding mechanism. A side guard plate 14 is provided on the other side of the top plate 13 corresponding to the limit switch 7, i.e., the side corresponding to the welding mechanism. The length of the guard plate 14 matches the front-to-back length of the top plate 13, and its height is higher than the top height of the slide block 3. The guard plate 14, in conjunction with the guard plate 32, prevents welding... Welding slag generated during welding falls onto the slide rail 51; the limit switch 7 is fixedly mounted on one side of the top plate 13 via a fixing bracket 71; a limit contact plate 33 is provided on the slide 3 on the same side as the limit switch 7, the limit contact plate 33 corresponds to the front and rear of the limit switch 7, and the limit contact plate 33 can move synchronously with the slide 3; it should be noted that the limit contact plate 33 is fixed on the side of the slide 3 near the front end, and the limit contact plate 33 is L-shaped, with a length along its front and rear length on one side of the slide 3. The elongated hole and the limiting contact plate 33 are fixedly connected to the threaded hole on the side of the slide block 3 by bolts passing through the elongated hole. The elongated hole on the limiting contact plate 33 allows for easy adjustment of its front and rear positions. To ensure the safety of the slide block 3, symmetrical limiting blocks 15 are provided at the front and rear ends of the top plate 13 near the side. A first buffer block 151 is fixed on the limiting block 15 corresponding to one side of the slide block 3, and a second buffer block 31 corresponding to the first buffer block 151 is provided at the front and rear ends of the slide block 3. See the appendix of the instruction manual. Figure 1 , 2As shown in Figure 4, a support base 4 is fixed to the top of the slide block 3. The side of the support base 4 is L-shaped, and a vertical reinforcing rib is provided at the center of its back to ensure its strength. A vertical plate 41 is fixed to one side of the support base 4 near the front end. The vertical plate 41 is vertically arranged and is fixed to the support base 4 by bolts. It can be flexibly adjusted and replaced as required. It should be noted that the top of the vertical plate 41 is higher than the top of the support base 4. A buffer cylinder 6 is provided on the side of the vertical plate 41 above the top of the support base 4. The buffer cylinder 6 is fixed to the side of the vertical plate 41 by bolts, and the buffer cylinder 6 is horizontally arranged front and back with its buffer column 61 facing forward. The end of the buffer column 61 is used to support the side of the sheet metal part. The buffer cylinder 6 can flexibly adjust the contact pressure between the end of the buffer column 61 and the sheet metal part to avoid damage to the outside of the sheet metal part. It has a high safety factor and flexible operation. To avoid the influence of welding slag dust on the buffer cylinder 6 during welding, please refer to the appendix of the instruction manual. Figure 1 and 2 As shown, the buffer cylinder 6 is provided with a protective cover 42, which is fixedly connected to the upright plate 41 by screws, making it easy to disassemble and assemble.

[0026] In use, the base 1 is fixed to the designated installation position on the top operating table of the fixture with bolts. The specifications of the shim 12 are selected according to the requirements to ensure the height position of the buffer cylinder 6. After the sheet metal part is placed on the top of the support on the fixture, the slide 3 is driven forward by the drive cylinder 2 until the limit contact plate 33 touches the limit switch 7 and the drive cylinder 2 stops. At the same time, the slide 3 stops moving. Then, the buffer cylinder 6 installed on the upright plate 41 drives the buffer column 61 to extend forward. The end of the buffer column 61 abuts against the side of the sheet metal part on the top of the support. The extension distance of the buffer column 61 can be controlled by controlling the buffer cylinder 6 to ensure the accuracy of the contact between the end of the buffer column 61 and the side of the sheet metal part, and the operation is flexible.

[0027] This welding fixture side positioning mechanism has a simple structure. The buffer cylinder 6 can quickly limit the sheet metal part laterally. The buffer column 61 of the buffer cylinder 6 can effectively control the force and avoid damage to the side of the sheet metal part. The buffer cylinder 6 itself can be adjusted in the front and back direction by driving the cylinder 2, while the buffer column 61 can move back and forth to ensure the accuracy of the mating position between the end of the buffer column 61 and the product. It can be adapted to the lateral limiting of different sheet metal parts, is flexible in use, reduces the use cost of fixtures and tooling, and improves the processing efficiency of sheet metal parts.

[0028] It should be emphasized that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A side positioning mechanism for a welding fixture, characterized in that: It has a base (1), which is composed of a bottom plate (11), a shim (12) and a top plate (13); the shim (12) is fixedly set on the top of the bottom plate (11), and the top plate (13) is fixedly set on the top of the shim (12); a driving device is provided on the top of the top plate (13), and a slide (3) that can move back and forth is provided on the driving device. A support seat (4) is fixed on the top of the slide (3), and a vertical plate (41) is fixed on one side of the support seat (4) near the front end. The vertical plate (41) is set vertically, and its top is higher than the top of the support seat (4). A buffer cylinder (6) is set on the side of the vertical plate (41) above the top of the support seat (4). The buffer cylinder (6) is set horizontally back and forth, and its buffer column (61) faces forward.

2. The welding fixture side positioning mechanism according to claim 1, characterized in that: The driving device includes a driving cylinder (2), which is fixedly installed at the top front end of the top plate (13). A linear guide rail is provided on the top of the base (1). The linear guide rail consists of a slide rail (51) and a slider (52). The slider (52) slides with the slide rail (51). The slide rail (51) is fixedly installed longitudinally at the top center of the top plate (13) and corresponds to the piston rod of the driving cylinder (2). The slide block (3) is fixedly installed on the top of the slider (52). The piston rod of the driving cylinder (2) is fixedly connected to the slide block (3). The driving cylinder (2) can drive the slide block (3) to move back and forth.

3. The welding fixture side positioning mechanism according to claim 2, characterized in that: The top plate (13) is provided with a fixed seat (16) at the center of the top near the front end, and the buffer cylinder (6) is fixedly installed on the front of the fixed seat (16); the center of the end of the fixed seat (16) is provided with a transition port that connects the front and rear, and the piston rod of the drive cylinder (2) passes through the transition port and is fixedly connected to the slide (3) provided on the other side of the fixed seat (16).

4. The welding fixture side positioning mechanism according to claim 3, characterized in that: The piston rod and the slide (3) are fixedly connected together by a push-pull joint (21). The top of the push-pull joint (21) is in the shape of a "T", and its front end is provided with a "T" shaped pull opening that is connected vertically. The outer end of the piston rod is provided with a "T" shaped pull head that fits into the "T" shaped pull opening vertically.

5. The welding fixture side positioning mechanism according to claim 1, characterized in that: The top plate (13) has symmetrical limiting blocks (15) at the front and rear ends near the side. A first buffer block (151) is fixed on the limiting block (15) on one side corresponding to the slide (3). A second buffer block (31) is provided at the front and rear ends of the slide (3) corresponding to the front and rear of the first buffer block (151).

6. The welding fixture side positioning mechanism according to claim 1, characterized in that: A limit switch (7) is provided on one side of the top plate (13) near the front end. A limit contact plate (33) is provided on the slide (3) on the same side as the limit switch (7). The limit contact plate (33) corresponds to the limit switch (7) in front and behind. A side guard plate (14) is provided on the other side of the top plate (13) corresponding to the limit switch (7).

7. The welding fixture side positioning mechanism according to claim 6, characterized in that: The limit switch (7) is fixedly installed on one side of the top plate (13) by a fixing bracket (71).

8. The welding fixture side positioning mechanism according to claim 2, characterized in that: The rear end of the slide (3) is provided with a guard plate (32), and the slide rail (51) is located directly below the guard plate (32).

9. The welding fixture side positioning mechanism according to claim 1, characterized in that: The buffer cylinder (6) is provided with a protective cover (42), and the protective cover (42) is fixedly connected to the upright plate (41) by screws.

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