A conjugate fine adjustment mechanism for a soldering jig

Abstract

The invention relates to a kind of conjugate fine adjustment mechanism for welding jig.The conventional jig needs to be repeatedly disassembled, ground and operated when the finished product size after metal strip welding is found to be poor, which increases workload, causes serious waste of time and reduces equipment utilization rate.The invention provides a kind of conjugate fine adjustment mechanism for welding jig, comprising reference plate, characterized in that the reference plate is provided with fine adjustment guide rod, the two outer ends of the fine adjustment guide rod are provided with compression spring to form conjugate state, a plurality of insert blocks are arranged on the fine adjustment guide rod in linear along the guide rod axial direction, the insert blocks are provided with insert needle, the insert blocks are provided with metal strip to be processed, and the fine adjustment guide rod is controlled by a fine adjustment mechanism to enable it to be fine adjusted in left and right direction.The invention can realize disassembly-free fine adjustment, improve production efficiency and reduce workload.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, and more specifically to a conjugate fine-tuning mechanism for fine-tuning the position of the lower auxiliary strip of a metal composite strip in a welding fixture. Background Technology

[0002] like Figure 1 and Figure 2 As shown, in the welding production of metal composite strips, traditional welding fixtures typically employ the following structure: the insert block 5 is precisely fitted to the reference plate 4 with a tolerance of H6 / h5 in the basic hole system; the insert pin 6 precisely slides through the insert block and the strip support plate 3 to accurately position the metal strip 2 before welding. The metal strip is mainly composed of an upper main strip 7 and a lower auxiliary strip 8, welded together, with a strip pressure plate 1 installed above the metal strip.

[0003] In actual production, when the finished product dimensions of the welded metal strip are found to be defective, fine-tuning of the lower auxiliary strip is required. At this time, the insert block needs to be removed from the middle template, and the surface of the insert block that needs to be repositioned needs to be ground. To remove the insert block, the metal strip remaining in the fixture must first be pulled out, and then components such as the strip pressure plate and strip support plate must be removed before the insert block can be taken out. After the insert block is ground, not only must a shim of equal grinding thickness be welded onto the opposite side of the ground surface, but all previously disassembled components must also be reinstalled. If the dimensions cannot be adjusted to the required standard in one grinding operation, the above disassembly, assembly, and grinding operations must be repeated multiple times. This not only greatly increases the workload of technicians but also causes prolonged downtime of production equipment, resulting in serious time waste and reduced equipment uptime.

[0004] Therefore, there is an urgent need for a mechanism that can quickly and accurately fine-tune the position of the pin without disassembling the main structure of the fixture, in order to solve the problems of low debugging efficiency and long equipment downtime in the existing technology. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a conjugate fine-tuning mechanism for welding fixtures, which enables fine-tuning without disassembly, improves production efficiency, and reduces workload.

[0006] Therefore, the present invention adopts the following technical solution: a conjugate fine-tuning mechanism for welding fixtures, comprising a reference plate, characterized in that a fine-tuning guide rod is provided on the reference plate, and compression springs are provided at the two outer ends of the fine-tuning guide rod to form a conjugate state, a plurality of pin blocks are arranged in a straight line along the guide rod axis, pins are provided on the pin blocks, and a metal strip to be processed is provided on the pin blocks, and the fine-tuning guide rod is controlled by a fine-tuning mechanism to enable fine-tuning of its position in the left and right directions.

[0007] Preferably, the fine-tuning mechanism includes a differential head which is docked with an external rack. The external rack is engaged with an internal rack through a gear. The fine-tuning mechanism further includes fine-tuning ejector rods disposed at two ends of a fine-tuning guide rod. The left fine-tuning ejector rod is connected to the internal rack, and the right fine-tuning ejector rod is connected to the external rack. Smooth inclined surfaces are formed at the front ends of the left fine-tuning ejector rod and the right fine-tuning ejector rod, and the smooth inclined surfaces are matched with empty slots formed at two ends of the fine-tuning guide rod.

[0008] Preferably, positioning columns are provided on the fine-tuning ejector rods, and inclined slot waist-shaped holes which are matched with the positioning columns are formed on the internal rack and the external rack.

[0009] Preferably, the overall structural layout of the fine-tuning mechanism and the fine-tuning guide rod is in a "square" shape.

[0010] Preferably, a plurality of concave portions are axially formed on the fine-tuning guide rod. The pin insert block is in a "gate" shape, a card slot is formed at the center of the pin insert block, and through holes are formed on both sides of the pin insert block to insert the pin inserts.

[0011] Preferably, a tension spring is provided at the outer end of the internal rack, and the tension spring and the movement of the differential head form a set of tension forces.

[0012] Preferably, a compression spring baffle is provided at the outer end of the compression spring.

[0013] The present invention has the following beneficial effects: 1. Fine-tuning without disassembly: It is not necessary to disassemble and assemble components such as the tape pressing plate, tape supporting plate, and middle template, nor to repeatedly grind the pin insert block and add gaskets. Only by screwing the differential head can the position of the pin insert be quickly and accurately adjusted, thereby driving the lower auxiliary tape to shift, greatly shortening the debugging time.

[0014] 2. High precision and high stability: By adopting the combination of gear train transmission (external rack - gear - internal rack) and linear cam movement (inclined slot waist-shaped hole and front inclined surface), precise transmission of displacement is achieved. At the same time, the left and right compression springs form a conjugate force balance system, ensuring that the fine-tuning guide rod is evenly stressed at any position without jitter or jamming.

[0015] 3. Reliable transmission: The tension spring ensures that the internal and external racks and the gear are always tightly engaged without return clearance, and forms a tension force with the movement of the differential head, ensuring that the entire fine-tuning mechanism always moves effectively.

[0016] 4. Compact structure and convenient for integration: The overall layout is in a "square" shape, converting parallel forces into moving acting forces, with a small volume, and can be directly integrated into the existing welding fixture.

[0017] 5. Pure mechanical structure and easy to maintain: It does not require electrical or pneumatic assistance, has a low failure rate, is easy to maintain, and is suitable for long-term stable use in environments such as welding workshops. Description of the Drawings

[0018] Figure 1 This is a schematic diagram of the existing technology.

[0019] Figure 2 This is a diagram of a metal strip assembly.

[0020] Figure 3 This is an exploded view of the present invention.

[0021] Figure 4 This is a schematic diagram of the fine-tuning mechanism of the present invention.

[0022] Figure 5 This is a schematic diagram of the fine-tuning force motion of the present invention.

[0023] Figure 6 This is a diagram of the pin assembly.

[0024] In the diagram: 1-Strip pressure plate, 2-Metal strip, 3-Strip support plate, 4-Base plate, 5-Pin block, 6-Pin, 7-Main strip, 8-Auxiliary strip, 9-Tension spring, 10-Tension spring support, 11-Internal rack, 12-External rack, 13-Gear, 14-Rack guide rail, 15-Micrometer head mounting seat, 16-Compression spring baffle, 17-Compression spring, 18-Micro-adjustment guide rod, 19-Micrometer head, 20-Left micro-adjustment top rod, 21-Right micro-adjustment top rod, 22-Positioning post, 23-Slanted groove waist-shaped hole. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments.

[0026] like Figures 3-6 The diagram illustrates a conjugate fine-tuning mechanism for a welding fixture, comprising a reference plate 4, on which a fine-tuning guide rod 18 is mounted. Compression springs 17 are mounted at both outer ends of the guide rod, forming a conjugate state. Multiple insert blocks 5 are arranged linearly along the guide rod's axial direction. Inserts 6 are mounted on each insert block, and a strip of metal to be processed 2 is mounted on each insert block. The fine-tuning guide rod is controlled by a fine-tuning mechanism to finely adjust its position in the left and right directions. A left compression spring and a right compression spring are respectively mounted at the left and right ends of the guide rod, both in a pre-compressed state. By applying force through the fine-tuning mechanism to adjust the position of the guide rod, due to the reaction force characteristics of the springs, the waxing and waning of the two spring forces always maintains a balanced force on the guide rod 18. The left and right compression springs form a conjugate force, like two hands steadily supporting the guide rod 18.

[0027] Specifically, the fine-tuning mechanism includes a differential head 19, which is connected to the external rack 12. The external rack 12 meshes with the internal rack 11 through a gear 13. It also includes fine-tuning ejector rods arranged at both ends of the fine-tuning guide rod. Among them, the left fine-tuning ejector rod 20 is connected to the internal rack 11, and the right fine-tuning ejector rod 21 is connected to the external rack 12. The front ends of the left and right fine-tuning ejector rods both form smooth inclined surfaces, and the smooth inclined surfaces match the empty grooves formed at both ends of the fine-tuning guide rod. Rotating the differential head 19 can drive the movement of the external rack, thereby driving the action of the fine-tuning ejector rod. The position change of the fine-tuning ejector rod drives the left and right movement of the fine-tuning guide rod.

[0028] Specifically, positioning columns 22 are provided on the fine-tuning ejector rods, and inclined slot waist-shaped holes 23 that match the positioning columns are formed on the internal rack 11 and the external rack 12. The thrust generated by the inclined slot waist-shaped hole at the right end of the external rack 12 forces the right fine-tuning guide rod 21 to move forward, and the thrust generated by the inclined slot waist-shaped hole at the left end of the internal rack 11 forces the left fine-tuning guide rod 20 to move backward. <000,0071>Specifically, the overall structural layout of the fine-tuning mechanism and the fine-tuning guide rod 18 is in a "mouth" shape. The combined application of the gear train movement and the linear cam movement is adopted, and the overall structural layout is in a "mouth" shape, which cleverly converts the parallel force into a moving force.

[0029] Specifically, multiple concave portions are formed along the axial direction on the fine-tuning guide rod 18. The insert needle block is in a "door" shape, a card slot is formed in the center of the insert needle block, and through holes are formed on both sides of the insert needle block to penetrate the insert needles. The insert needle 6 is sleeved inside the insert needle block 5 and is precisely slidably mated with the insert needle block 5 with a tolerance of H6 / h5 in the basic hole system. The structure of the insert needle block 5 is designed in a "door" shape to form a tight concave-convex assembly relationship with the fine-tuning guide rod 18, so that the insert block 5 instantaneously responds and moves with the slight movement of the fine-tuning guide rod 18, thereby driving the micro-displacement of the position of the insert needle 6, and finally completing the rapid displacement adjustment work of the auxiliary tape 8 of the metal strip.

[0030] Specifically, a tension spring 9 is provided at the outer end of the internal rack 11. The tension spring 9 ensures that when the fine-tuning guide rod 18 moves in either the left or right direction, the internal rack 11, the external rack 12, and the gear 13 can be closely meshed and transmitted. Moreover, the tension spring 9 can also form a set of tension forces with the movement of the differential head 19, ensuring that the entire fine-tuning mechanism is always effectively moving.

[0031] Specifically, a compression spring baffle 16 is provided at the outer end of the compression spring 17. It is used to limit the compression spring.

[0032] The following takes the left fine-tuning insert needle, which带动 the lower-layer auxiliary tape to move leftward as an example to illustrate the working process: First, turn the differential head 19 clockwise. The differential head 19 pushes the external rack 12 to move to the right. The external rack 12 drives the internal rack 11 to move to the left through the gear 13, and the two move in opposite directions. The inclined slot waist-shaped hole at the right end of the external rack 12 generates a thrust force, forcing the right fine-tuning guide rod 21 to move forward; the inclined slot waist-shaped hole at the left end of the internal rack 11 generates a thrust force, forcing the left fine-tuning guide rod 20 to move backward. The extrusion thrust generated by the forward movement of the right fine-tuning guide rod 21 drives the fine-tuning guide rod 18 to move to the left.

[0033] During this process, the inclined surfaces at the front ends of the left fine-tuning guide rod 20 and the right fine-tuning guide rod 21 are always in contact with the fine-tuning guide rod 18, forming a conjugate mechanism. When the fine-tuning guide rod 18 moves to the left, the compression spring on the right is under less pressure, and the spring slowly extends; the compression spring on the left is squeezed by the fine-tuning guide rod 18 and slowly contracts. Due to the reaction force characteristics of the spring, the spring forces on the left and right increase and decrease reciprocally, always keeping the fine-tuning guide rod 18 under balanced force. The left and right compression springs form a conjugate force, just like a person's two hands firmly supporting the fine-tuning guide rod 18.

[0034] When the fine-tuning guide rod 18 moves to the left, since the needle insert block 5 and the fine-tuning guide rod 18 are in a door-shaped concave-convex fit, the needle insert block 5 moves synchronously to the left, and then带动 its internal needle insert 6 to move slightly to the left. The needle insert 6 passes through the needle insert block 5 and the strip support plate 3, and directly acts on the lower auxiliary strip 8 of the metal composite strip 2, thereby adjusting the lower auxiliary strip 8 to the target position to the left.

[0035] Similarly, if you need to fine-tune the needle insert to the right, just turn the differential head 19 counterclockwise. The tension spring 9 always ensures the tight meshing of the internal and external racks with the gear during this process, and forms a set of tension forces with the movement of the differential head 19, ensuring the accuracy and reliability of the fine-tuning action.

[0036] The overall layout of the mechanism is in a "square" shape. It converts the horizontal linear movement of the rack into the vertical displacement forward and backward movement of the fine-tuning guide rod through the inclined slot waist-shaped hole, and then converts it into the horizontal displacement of the fine-tuning guide rod through the front inclined surface, ultimately driving the needle insert block and the needle insert for precise fine-tuning. All movements are pure mechanical transmissions, without the assistance of electricity or compressed air.

[0037] The conjugate fine-tuning mechanism provided by the present invention has a simple, compact structure, is easy to manufacture, and is quick to debug. It can quickly complete the position fine-tuning of the lower auxiliary strip without disassembling the main body of the welding jig, significantly reducing the equipment downtime, improving the production efficiency and equipment operation rate, and has good prospects for industrial promotion and application.

[0038] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A conjugate fine-tuning mechanism for welding fixtures, comprising a reference plate (4), characterized in that... A fine-tuning guide rod (18) is arranged on the reference plate (4). Compression springs (17) are arranged at the two outer ends of the fine-tuning guide rod to form a conjugate state. A plurality of insert pin blocks (5) are arranged in a straight line along the axial direction of the guide rod on the fine-tuning guide rod. Insert pins (6) are arranged on the insert pin blocks. A to-be-processed metal strip (2) is arranged on the insert pin blocks. The fine-tuning guide rod is controlled by a fine-tuning mechanism to be able to fine-tune its orientation in the left and right directions.

2. The conjugate fine-tuning mechanism for welding fixtures according to claim 1, characterized in that... The fine-tuning mechanism includes a differential head (19). The differential head (19) is docked with an external rack (12). The external rack (12) meshes with an internal rack (11) through a gear (13). It also includes fine-tuning ejector rods respectively arranged at both ends of the fine-tuning guide rod. Among them, the left fine-tuning ejector rod (20) is connected to the internal rack (11), and the right fine-tuning ejector rod (21) is connected to the external rack (12). Smooth inclined surfaces are formed at the front end parts of the left fine-tuning ejector rod and the right fine-tuning ejector rod, and the smooth inclined surfaces are matched with the empty grooves formed at both ends of the fine-tuning guide rod.

3. The conjugate fine-tuning mechanism for welding fixtures according to claim 2, characterized in that... Positioning columns (22) are arranged on the fine-tuning ejector rods. Oblique groove waist-shaped holes (23) matched with the positioning columns are formed on the internal rack (11) and the external rack (12).

4. A conjugate fine-tuning mechanism for a welding fixture according to any one of claims 1-3, characterized in that... The overall structural layout of the fine-tuning mechanism and the fine-tuning guide rod (18) is in a "mouth" shape.

5. The conjugate fine-tuning mechanism for a welding fixture according to claim 1, characterized in that... A plurality of concave parts are formed along the axial direction on the fine-tuning guide rod (18). The insert pin blocks are in a "door" shape. A clamping groove is formed in the center of the insert pin blocks. Through holes are formed on both sides of the insert pin blocks to penetrate the insert pins.

6. A conjugate fine-tuning mechanism for a welding fixture according to claim 2, characterized in that... A tension spring (9) is arranged at the outer end of the internal rack (11). The tension spring (9) and the movement of the differential head (19) form a set of tension forces.

7. The conjugate fine-tuning mechanism for welding fixtures according to claim 1, characterized in that... A compression spring baffle (16) is arranged at the outer end of the compression spring (17).

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