A long strip metal part resistance welding anti-deformation positioning tool

Abstract

The application discloses a kind of long strip sheet metal piece resistance welding anti-deformation positioning tool, comprising: bottom plate and fixedly installed connecting plate in the rear side of bottom plate;The bottom of bottom plate is provided with cylinder, the telescopic end of cylinder is fixedly connected or detachably installed with adjusting plate, two or more than two adjusting seats are provided on adjusting plate;The top of bottom plate is provided with multiple positioning bases, a rotating shaft is installed on positioning base, both ends of rotating shaft penetrate through both sides of positioning base, and movable positioning member is fixedly connected or integrally formed on rotating shaft;Adjusting seat and rotating shaft are drivingly connected by adjusting assembly, cylinder drives adjusting plate and adjusting seat to move, and then rotating shaft is driven to rotate by adjusting assembly, to adjust movable positioning member to open and close, realize the positioning and anti-deformation compression of long strip sheet metal piece.The application compared with prior art, by adjusting plate, adjusting seat and gear rack and pinion adjusting assembly, solve the problem of uneven compression force and inconvenient adjustment of existing tool.

Description

Technical Field

[0001] This invention relates to the field of resistance welding fixture technology, and in particular to a deformation-preventing positioning fixture for resistance welding of long sheet metal parts. Background Technology

[0002] Long sheet metal parts, due to their length being much greater than their width and thickness, experience concentrated and uneven heat dissipation during resistance welding, making them highly susceptible to welding deformation. Welding deformation not only affects the appearance quality of the parts but can also lead to dimensional deviations in subsequent assembly, and even render an entire batch of parts unusable.

[0003] To suppress welding deformation, long sheet metal parts typically need to be reliably positioned and clamped on welding fixtures. Existing fixtures often use manual screws or eccentric wheels to clamp the workpiece at single or multiple points. This method has the following drawbacks: First, it is difficult to maintain uniform clamping force at each clamping point, easily leading to over-constraint in localized areas and causing new deformations; second, adjusting the clamping position is difficult, requiring individual adjustments when changing to different specifications, which is time-consuming and labor-intensive; third, the clamping action lacks coordination with the welding action, resulting in low production efficiency.

[0004] Therefore, there is an urgent need to provide a deformation-resistant positioning fixture that can quickly and evenly press long sheet metal parts, is easy to adjust, and has reliable positioning, in order to solve the problems of uneven pressing and inconvenient adjustment of existing fixtures. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning fixture for anti-deformation welding of long sheet metal parts, so as to solve the problem that the existing fixtures have uneven clamping force on long sheet metal parts and are inconvenient to adjust, resulting in difficulty in effectively controlling welding deformation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a long strip sheet metal part resistance welding anti-deformation positioning fixture, comprising:

[0007] Base plate and connecting plate fixedly installed on the rear side of the base plate;

[0008] A cylinder is installed at the bottom of the base plate, and an adjustment plate is fixedly connected or detachably installed at the telescopic end of the cylinder. The adjustment plate is equipped with two or more adjustment seats.

[0009] The top of the base plate is provided with multiple positioning bases, and a rotating shaft is installed on the positioning base. The two ends of the rotating shaft pass through the two sides of the positioning base, and a movable positioning component is fixedly connected or integrally formed on the rotating shaft.

[0010] The adjusting seat and the rotating shaft are connected by an adjusting assembly. The cylinder drives the adjusting plate and the adjusting seat to move, which in turn drives the rotating shaft to rotate, thereby adjusting the movable positioning part to open and close, so as to achieve positioning and anti-deformation clamping of the long sheet metal part.

[0011] As a further description of the above technical solution:

[0012] The adjusting seat has adjusting grooves on both sides, and the adjusting components are located inside the adjusting grooves.

[0013] As a further description of the above technical solution:

[0014] The adjustment assembly includes a rack and gears. The rack is fitted into the adjustment groove, and gears are fixedly installed at both ends of the rotating shaft. The rack and gears mesh with each other.

[0015] As a further description of the above technical solution:

[0016] The base plate is a rectangular plate with multiple positioning bases arranged on the left and rear edges of the top of the base plate, which are used to position the long sheet metal from two adjacent sides.

[0017] As a further description of the above technical solution:

[0018] The top of the base plate is equipped with multiple positioning blocks, which work together with the movable positioning parts to restrict the displacement of the long sheet metal parts.

[0019] As a further description of the above technical solution:

[0020] Multiple mounting holes are provided along the horizontal direction on the base plate, and positioning pins are inserted into the mounting holes to assist in positioning the long sheet metal parts on the base plate.

[0021] As a further description of the above technical solution:

[0022] A through hole is provided in the middle of the base plate and near the right side. The through hole is used for the upper electrode of the resistance welding equipment to pass through in order to contact and weld long sheet metal parts.

[0023] As a further description of the above technical solution:

[0024] The right side of the base plate is equipped with two or more pneumatic manual valves, which are connected to the cylinder air circuit to synchronously control the cylinder's movement.

[0025] As a further description of the above technical solution:

[0026] The cylinder has a mounting base on its outer wall, which is used to securely connect the cylinder to the frame or workbench.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] 1. In this invention, a cylinder is used as the power source. Through the adjustment assembly consisting of an adjustment plate, an adjustment seat, and a gear rack, multiple rotating shafts and movable positioning parts are driven to move synchronously. This can apply uniform clamping force to multiple parts of a long sheet metal part at the same time, effectively suppressing welding thermal deformation and solving the problems of uneven clamping force and inconvenient adjustment of existing tooling.

[0029] 2. In this invention, the adjusting plate and the telescopic end of the cylinder are detachably connected, which makes it easy to quickly replace the adjusting plate with different spacing adjusting seat according to the different specifications of long sheet metal parts; and the adjustment groove on the adjusting seat and the rack can realize the fine adjustment of the pressing stroke, which is highly versatile and flexible and convenient to adjust.

[0030] 3. In this invention, by arranging positioning bases and positioning blocks on the adjacent sides of the base plate and supplementing them with positioning pins, long sheet metal parts can be reliably positioned from multiple directions. With the pressing of the movable positioning parts, a deformation prevention control mode of positioning before pressing is achieved, which significantly improves welding quality and product consistency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention 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.

[0032] Figure 1 This is a structural schematic diagram of a positioning fixture for preventing deformation during resistance welding of long sheet metal parts.

[0033] Figure 2 This is a schematic diagram of a cylinder for a resistance welding anti-deformation positioning fixture for long sheet metal parts.

[0034] Figure 3 This is a schematic diagram of the structure of an adjustment plate for a resistance welding anti-deformation positioning fixture for long sheet metal parts.

[0035] Figure 4 This is a structural cross-sectional view of an anti-deformation positioning tooling adjustment assembly for resistance welding of long sheet metal parts.

[0036] Legend:

[0037] 1. Base plate; 2. Connecting plate; 3. Cylinder; 4. Adjusting plate; 5. Adjusting seat; 6. Adjusting groove; 7. Positioning base; 8. Rotating shaft; 9. Movable positioning component; 10. Adjusting assembly; 1001. Rack; 1002. Gear; 11. Positioning block; 12. Positioning pin; 13. Through hole; 14. Upper electrode; 15. Pneumatic manual valve; 16. Fixed seat. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] Please see Figure 1-4 This invention provides a technical solution: a positioning fixture for preventing deformation during resistance welding of long sheet metal parts, comprising:

[0041] The base plate 1 and the connecting plate 2 are fixedly installed on the rear side of the base plate 1. The connecting plate 2 is used to fix the entire fixture to the worktable or frame of the resistance welding equipment.

[0042] A cylinder 3 is installed at the bottom of the base plate 1. An adjustment plate 4 is detachably installed on the telescopic end of the cylinder 3 by bolts. Two or more adjustment seats 5 are fixedly installed on the adjustment plate 4. The cylinder 3 is installed on the frame or workbench by a fixed seat 16 to ensure its working stability.

[0043] The top of the base plate 1 is provided with multiple positioning bases 7, and a rotating shaft 8 is installed on the positioning base 7. The two ends of the rotating shaft 8 pass through the two sides of the positioning base 7, and a movable positioning component 9 is fixedly connected or integrally formed on the rotating shaft 8.

[0044] The adjusting seat 5 and the rotating shaft 8 are connected by an adjusting assembly 10. Adjusting grooves 6 are formed inside both sides of the adjusting seat 5, and the adjusting assembly 10 is disposed inside the adjusting grooves 6. The adjusting assembly 10 includes a rack 1001 and a gear 1002. The rack 1001 is fitted into the adjusting groove 6, and the gears 1002 are fixedly installed at both ends of the rotating shaft 8. The rack 1001 and the gears 1002 mesh with each other.

[0045] The base plate 1 is a rectangular plate, and multiple positioning bases 7 are respectively arranged on the left and rear edges of the top of the base plate 1 to position the long sheet metal part from two adjacent sides. The top of the base plate 1 is also provided with multiple positioning blocks 11, which cooperate with the movable positioning parts 9 to restrict the displacement of the long sheet metal part and prevent it from moving during the welding process.

[0046] To accommodate long sheet metal parts of different widths, the base plate 1 has multiple mounting holes along its horizontal direction, and positioning pins 12 are inserted into the mounting holes. The positioning pins 12 can abut against the edge of the sheet metal part from the side for auxiliary positioning.

[0047] A through hole 13 is provided in the middle and near the right side of the base plate 1. The through hole 13 is used for the upper electrode 14 of the resistance welding equipment to pass through. During welding, the upper electrode 14 moves downward through the through hole 13, contacts the sheet metal part, and cooperates with the lower electrode below the base plate 1 to complete the resistance welding.

[0048] Two or more pneumatic manual valves 15 are provided on the right side of the base plate 1. The pneumatic manual valves 15 are connected to the air circuit of the cylinder 3 and are used to synchronously control the action of the cylinder 3. The operator can control the reversal of the cylinder 3 through the manual valve to realize the pressing and releasing of the movable positioning part 9.

[0049] A mounting base 16 is installed on the outer wall of the cylinder 3. The mounting base 16 is used to securely connect the cylinder 3 to the frame or workbench to prevent the cylinder body from shaking and affecting the clamping accuracy.

[0050] Working principle: In use, the fixture is first fixed on the worktable of the resistance welding equipment by the fixed seat 16 and the connecting plate 2. The pneumatic manual valve 15 is operated to retract the piston rod of the cylinder 3. The adjusting plate 4 drives the adjusting seat 5 to move down. The rack 1001 drives the gear 1002 and the rotating shaft 8 to rotate. The movable positioning part 9 flips up and is in the released state.

[0051] Place the long sheet metal part on the base plate 1, ensuring its adjacent sides are close to the positioning base 7 and positioning block 11 on the left and rear sides. Insert the positioning pin 12 at the appropriate position according to the width of the part to complete the initial positioning. Operate the pneumatic manual valve 15 again to extend the piston rod of the cylinder 3, move the adjusting seat 5 upward, and drive the gear 1002 in the reverse direction with the rack 1001. The rotating shaft 8 drives the movable positioning part 9 to swing downward and press it against the upper surface of the long sheet metal part. Since multiple cylinders 3 are linked through the same adjusting plate 4, the clamping force of each movable positioning part 9 is uniform and consistent, pressing the sheet metal part against the base plate 1 from multiple points simultaneously, effectively preventing warping and deformation during the welding process.

[0052] After clamping, start the resistance welding equipment, and the upper electrode 14 passes through the through hole 13 to weld the workpiece. After welding is completed, reverse the operation of the pneumatic manual valve 15, and the movable positioning part 9 will be released, allowing the workpiece to be removed.

[0053] In this embodiment, to enable those skilled in the art to better implement the invention, specific examples of component selection are provided. The specific component selections are as follows: the pneumatic manual valve 15 can be model 4R110-06, and the cylinder 3 can be model CUJB20-15D. The above component selections are for illustrative purposes only; in actual applications, models with equivalent functions can be selected according to specific working conditions.

[0054] Example 2

[0055] Please see Figure 1-4Based on the above embodiments, this embodiment further improves upon the following technical solutions: When replacing long sheet metal parts of different specifications and adjusting the layout of the clamping points is required, the connecting bolts between the telescopic end of the cylinder 3 and the adjusting plate 4 can be loosened, and the adjusting plate 4 with different spacing adjusting seats 5 can be replaced as a whole. When it is necessary to fine-tune the clamping angle of a certain movable positioning part 9, the mounting position of the rack 1001 in the adjusting groove 6 can be adjusted to change the initial meshing point between the gear 1002 and the rack 1001, thereby adjusting the closing angle and clamping force of the movable positioning part 9, realizing rapid changeover and precise adjustment, taking into account both the versatility of the tooling and the flexibility of adjustment.

[0056] Example 3

[0057] Please see Figure 1-4 This embodiment further improves upon the above embodiments by providing the following technical solution: an elastic protective layer is provided on the pressing surface where the movable positioning member 9 contacts the elongated sheet metal part. The elastic protective layer is a heat-resistant rubber pad or a polyurethane pad. During the pressing process, the elastic protective layer increases the friction with the surface of the sheet metal part, preventing the workpiece from slipping under welding stress. Furthermore, it avoids direct hard contact between the metal surface of the movable positioning member 9 and the sheet metal part, preventing scratches on the workpiece surface and protecting the appearance quality of the elongated sheet metal part.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A positioning fixture for preventing deformation during resistance welding of long sheet metal parts, characterized in that, include: A base plate (1) and a connecting plate (2) fixedly installed on the rear side of the base plate (1); A cylinder (3) is provided at the bottom of the base plate (1). An adjustment plate (4) is fixedly connected to or detachably installed at the telescopic end of the cylinder (3). Two or more adjustment seats (5) are provided on the adjustment plate (4). The top of the base plate (1) is provided with multiple positioning bases (7), and a rotating shaft (8) is installed on the positioning base (7). The two ends of the rotating shaft (8) pass through both sides of the positioning base (7), and a movable positioning component (9) is fixedly connected or integrally formed on the rotating shaft (8). The adjusting seat (5) and the rotating shaft (8) are connected by an adjusting assembly (10). The cylinder (3) drives the adjusting plate (4) and the adjusting seat (5) to move, and then drives the rotating shaft (8) to rotate through the adjusting assembly (10) to adjust the opening and closing of the movable positioning part (9) to achieve positioning and anti-deformation pressing of the long sheet metal part.

2. The anti-deformation positioning fixture for resistance welding of long sheet metal parts according to claim 1, characterized in that, The adjusting seat (5) has adjusting grooves (6) on both sides inside, and the adjusting component (10) is set inside the adjusting grooves (6).

3. The anti-deformation positioning fixture for resistance welding of long sheet metal parts according to claim 2, characterized in that, The adjustment assembly (10) includes a rack (1001) and a gear (1002). The rack (1001) is embedded in the adjustment groove (6). The gears (1002) are fixedly installed at both ends of the rotating shaft (8). The rack (1001) and the gears (1002) mesh with each other.

4. The anti-deformation positioning fixture for resistance welding of long sheet metal parts according to claim 1, characterized in that, The base plate (1) is a rectangular plate, and multiple positioning bases (7) are respectively arranged on the left and rear edges of the top of the base plate (1) for positioning the long sheet metal from two adjacent sides.

5. The anti-deformation positioning fixture for resistance welding of long sheet metal parts according to claim 1, characterized in that, The top of the base plate (1) is provided with multiple positioning blocks (11), which cooperate with the movable positioning component (9) to jointly restrict the displacement of the long sheet metal component.

6. The anti-deformation positioning fixture for resistance welding of long sheet metal parts according to claim 1, characterized in that, The base plate (1) has multiple mounting holes along its horizontal direction, and a positioning pin (12) is inserted into the mounting hole for auxiliary positioning of the long sheet metal parts on the base plate.

7. The anti-deformation positioning fixture for resistance welding of long sheet metal parts according to claim 1, characterized in that, A through hole (13) is provided in the middle and near the right side of the base plate (1). The through hole (13) is used for the upper electrode (14) of the resistance welding equipment to pass through, so as to contact and weld the long sheet metal part.

8. The anti-deformation positioning fixture for resistance welding of long sheet metal parts according to claim 1, characterized in that, Two or more pneumatic manual valves (15) are provided on the right side of the base plate (1). The pneumatic manual valves (15) are connected to the air circuit of the cylinder (3) and are used to synchronously control the action of the cylinder (3).

9. A positioning fixture for preventing deformation during resistance welding of long sheet metal parts according to claim 1, characterized in that, The cylinder (3) is fitted with a mounting base (16) on its outer wall. The mounting base (16) is used to securely connect the cylinder (3) to the frame or workbench.

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