A laser welding fixture for eliminating rotational vibration displacement

Abstract

This utility model relates to a laser welding pick clamp, specifically a laser welding clamp that eliminates rotational vibration and displacement. It includes a turntable, with an annular limiting component and a first and second clamping platform symmetrically fixed to the top of the turntable. The first clamping platform employs a dual-station alternating operation design. Its core structure includes a bottom turntable and positioning clamps symmetrically arranged at both ends of the turntable. After the operator manually places the pick at the initial loading / unloading position, the turntable starts and rotates to a preset small-angle position. The built-in flip-clamping component of the clamp automatically flips, precisely clamping and positioning both ends of the pick. During welding, this clamping state effectively counteracts the high-frequency vibration generated by the turntable rotation and laser processing, preventing pick displacement. After welding is completed and the turntable returns to its initial position, the flip-clamping component automatically flips upwards to release the clamping constraint, facilitating quick pick-and-place of the pick by the operator.

Description

Technical Field

[0001] This utility model relates to a laser welding pick clamp, specifically a laser welding clamp that eliminates rotational vibration displacement. Background Technology

[0002] In biomedical engineering, such as in medical devices and implants, the welding requirements for picks are extremely high. They must possess excellent biocompatibility, corrosion resistance, and reliability. When manufacturing pick products with complex shapes and structures, it is necessary to weld two picks together. Laser thermofusion welding enables the flexible welding of picks of different shapes and sizes to construct the required complex structures, meeting the design and functional requirements of the product.

[0003] The principle of laser thermomelting welding of ferrules is to use a high-energy-density laser beam focused on the connection interface of two ferrules. The material absorbs the laser energy and converts it into heat energy, causing the local area to melt rapidly and form a molten pool. After the laser stops irradiating, the molten pool cools and solidifies rapidly, realizing the metallurgical bonding of the two ferrules to form a finished product. Before welding, the picks need to be manually stacked on a dedicated limiting platform. Some manufacturers have a dual-station design, which adds two limiting platforms at both ends of the turntable. The rotation of the turntable alternately transmits the two limiting platforms to the bottom of the welding equipment for welding. When welding after manually placing the picks, once the turntable rotates, the picks are very likely to vibrate or shift due to the lack of effective fixing measures. To prevent the paddle from vibrating or shifting, a welding fixture is required. Traditional fixtures are often difficult to loosen quickly and easily from fixing the paddle. This means that when operators pick up the welded paddle, they need to spend a lot of time and effort to manually release the fixing state, which increases the complexity and labor intensity of manual operation. Utility Model Content

[0004] The purpose of this invention is to provide a laser welding fixture that eliminates rotational vibration and displacement, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A laser welding fixture for eliminating rotational vibration and displacement includes a turntable. An annular limiting member is provided above the turntable, and a first clamping platform and a second clamping platform are symmetrically fixed to the top of the turntable. A limiting placement platform and three levers placed on the limiting placement platform are fixed on the first clamping platform and the second clamping platform. A support frame is fixedly installed at both ends of the two limiting placement platforms. A flip clamping assembly is provided on the support frame. A drive mechanism for driving the flip clamping assembly to flip is provided below the flip clamping assembly. The driving mechanism includes an elastic limiting mechanism and a transmission mechanism for driving the flip clamping assembly to flip. The elastic limiting mechanism is in a compression fit with the annular limiting member.

[0006] As described above, the laser welding fixture for eliminating rotational vibration and displacement includes a rotating clamping assembly comprising a shaft rotatably mounted on the support frame and three rotating clamps fixedly sleeved on the shaft, wherein the rotating clamps cooperate with a lever.

[0007] As described above, the laser welding fixture for eliminating rotational vibration and displacement includes two sliding frames that slide on the first and second clamping platforms respectively, and two supports that are fixed at both ends of the sliding frames. One end of each of the two supports is fixedly provided with a transmission tooth.

[0008] The laser welding fixture for eliminating rotational vibration and displacement as described above: both ends of the shaft are fixedly fitted with gears, which mesh with transmission teeth for transmission.

[0009] As described above, the laser welding fixture for eliminating rotational vibration and displacement includes an elastic limiting mechanism comprising mounting plates fixed at both ends of the limiting placement platform and two limiting posts fixed at the bottom of the mounting plates, with springs sleeved on the limiting posts.

[0010] The laser welding fixture for eliminating rotational vibration displacement as described above includes an elastic limiting mechanism that further comprises four arcuate grooves formed on the sliding frame, four limiting posts extending to the bottom of the arcuate grooves, and four springs disposed at the top of the sliding frame.

[0011] The laser welding fixture for eliminating rotational vibration and displacement as described above: the transmission mechanism includes two beveled blocks respectively fixed to one end of the first clamping platform and the second clamping platform, and both beveled blocks are in a compression fit with the same annular limiting member.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The laser welding fixture adopts a dual-station alternating operation design. Its core structure includes a bottom turntable and positioning fixtures symmetrically arranged at both ends of the turntable. After the operator manually places the pick at the initial loading and unloading position, when the turntable starts and rotates to the preset small angle position, the built-in flip clamping component of the fixture automatically flips to achieve precise clamping and positioning of both ends of the pick. During the welding process, this clamping state can effectively counteract the high-frequency vibration generated by the rotation of the turntable and laser processing, and prevent the pick from shifting. When the welding is completed and the turntable returns to the initial position, the flip clamping component automatically flips upward to reset, releasing the clamping constraint, which makes it easy for the operator to quickly pick up and put down the pick.

[0013] The workflow of this utility model follows the automated logic of "loading-clamping-welding-unloading". The clamping and unloading actions are linked with the turntable station, eliminating the need for additional manual operation. This reduces human intervention errors and minimizes the risk of workpiece scratches through the non-contact flipping structure. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of a laser welding fixture designed to eliminate rotational vibration and displacement.

[0015] Figure 2 A schematic diagram of the flipping state structure in a laser welding fixture designed to eliminate rotational vibration and displacement.

[0016] Figure 3 A schematic diagram of the unflipped state structure in a laser welding fixture designed to eliminate rotational vibration and displacement.

[0017] Figure 4 A schematic diagram of another angle of the laser welding fixture in the unflipped state, designed to eliminate rotational vibration and displacement.

[0018] Figure 5 A schematic diagram of the limiting placement stage and lever structure in a laser welding fixture designed to eliminate rotational vibration and displacement.

[0019] Figure 6 A schematic diagram of the annular limiting component, the first clamping platform, and the second clamping platform in a laser welding fixture designed to eliminate rotational vibration and displacement.

[0020] Figure 7 A schematic diagram of the flipping clamping assembly and transmission mechanism in a laser welding fixture designed to eliminate rotational vibration and displacement.

[0021] Figure 8 A schematic diagram of the disassembled structure of the turntable and annular limiting component in a laser welding fixture designed to eliminate rotational vibration and displacement.

[0022] Figure 9 A front view schematic diagram of the flipping clamping assembly and transmission mechanism in a laser welding fixture designed to eliminate rotational vibration and displacement.

[0023] In the diagram: 1. Turntable; 2. Annular limiting component; 3. First clamping platform; 4. Second clamping platform; 5. Limiting placement platform; 6. Paddle; 7. Support frame; 8. Shaft; 9. Flipping clamp; 10. Sliding frame; 11. Support; 12. Transmission gear; 13. Gear; 14. Circular groove; 15. Mounting plate; 16. Limiting post; 17. Spring; 18. Angled block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figures 1-9 As an embodiment of the present utility model, the laser welding fixture for eliminating rotational vibration displacement includes a turntable 1. An annular limiting member 2 is provided above the turntable 1, and a first clamping platform 3 and a second clamping platform 4 are symmetrically fixed on the top of the turntable 1. A limiting placement platform 5 and three paddles 6 placed on the limiting placement platform 5 are fixed on the first clamping platform 3 and the second clamping platform 4. A support frame 7 is fixedly installed at both ends of the two limiting placement platforms 5. A flip clamping assembly is provided on the support frame 7. A drive mechanism for driving the flip clamping assembly to perform flipping motion is provided below the flip clamping assembly. The driving mechanism includes an elastic limiting mechanism and a transmission mechanism for driving the flip clamping assembly to flip. The elastic limiting mechanism is in a compression fit with the annular limiting member 2.

[0026] In this embodiment, a turntable 1 is cleverly set at the bottom of the welding equipment, and two first clamping platforms 3 and second clamping platforms 4 are respectively arranged at both ends of the turntable 1. By using the rotation of the turntable 1, the first clamping platforms 3 and second clamping platforms 4 can be alternately transported. In this way, during the welding operation, when one clamping platform is located below the welding equipment for precise welding, the other clamping platform can simultaneously perform loading and unloading operations, which greatly improves the working efficiency of the welding equipment and shortens the overall production cycle. After the paddle 6 is manually placed on the clamping platform, as the turntable 1 rotates at a small angle, the drive mechanism and the annular limiting component 2 engage in a pressing and clamping action. The flipping clamping assembly on the clamping platform responds quickly and flips, thus firmly clamping both ends of the paddle 6. This design effectively eliminates the vibration and displacement of the paddle 6 caused by the rotation of the equipment during welding, ensuring that the paddle 6 maintains precise positioning during welding, greatly improving the quality and accuracy of welding, and reducing the defect rate caused by positional deviations. After the welding process is completed, the turntable 1 drives the clamping table back to the initial loading and unloading position. At this time, the cooperation between the drive mechanism and the annular limiter 2 is canceled, so that the flipping structure automatically flips upward again and automatically cancels the clamping state of the lever 6. This greatly facilitates the operator's work of picking up the welded lever 6, reduces the labor intensity of manual operation, and improves the smoothness and convenience of the loading and unloading process, which helps to achieve the efficient operation of the entire welding production line.

[0027] As a further embodiment of this utility model, the flip clamping assembly includes a shaft 8 rotatably mounted on the support frame 7 and three flip clamps 9 fixedly sleeved on the shaft 8, wherein the flip clamps 9 cooperate with the lever 6.

[0028] In this embodiment, three flip clamps 9 rotate around a central point, and three placement slots are provided on the limiting placement platform 5, which can hold up to three sets of paddles 6 at a time. The positions of the three flip clamps 9 correspond to the three sets of paddles 6 respectively.

[0029] As a further embodiment of the present invention, the drive flipping clamping assembly further includes two sliding frames 10 that slide on the first clamping platform 3 and the second clamping platform 4 respectively, and two supports 11 that are fixed at both ends of the sliding frames 10 respectively. One end of each of the two supports 11 is fixedly provided with a transmission tooth 12.

[0030] In this embodiment, sliding frames 10 are slidably installed on the outer walls of the first clamping platform 3 and the second clamping platform 4. Each sliding frame 10 has two supports 11 at its top end, and the top end of each support 11 is provided with a transmission tooth 12.

[0031] As a further embodiment of this utility model, gears 13 are fixedly sleeved at both ends of the shaft 8, and the gears 13 mesh with the transmission gears 12 for transmission.

[0032] In this embodiment, the gear 13 is mounted on the shaft 8 and meshes with the transmission gear 12 on one side.

[0033] As a further embodiment of this utility model, the elastic limiting mechanism includes mounting plates 15 fixed at both ends of the limiting placement platform 5 and two limiting posts 16 fixed at the bottom of the mounting plates 15, with springs 17 sleeved on the limiting posts 16.

[0034] In this embodiment, the limiting post 16 provides sliding support for the sliding frame 10, and the elastic force of the spring 17 is applied to the sliding frame 10.

[0035] As a further embodiment of this utility model, the elastic limiting mechanism also includes four arc grooves 14 formed on the sliding frame 10, four limiting posts 16 respectively extending to the bottom of the arc grooves 14, and four springs 17 all disposed on the top of the sliding frame 10.

[0036] In this embodiment, the arc groove 14 corresponds to the limiting post 16, and the bottom ends of the four springs 17 are in contact with the top end of the sliding frame 10.

[0037] As a further embodiment of this utility model, the transmission mechanism includes two beveled blocks 18 respectively fixed to one end of the first clamping platform 3 and the second clamping platform 4, and both beveled blocks 18 are in a compression fit with the same annular limiting member 2.

[0038] In this embodiment, after the lever 6 is manually placed on the clamping platform, as the turntable 1 rotates at a small angle, the bottom of the beveled block 18 at one end will connect with the annular limiting member 2. Details of the notch design of the annular limiting member 2 in the loading and unloading area can be found in the attached diagram. Figure 8 Subsequently, at the point where the inclined edge of the beveled block 18 connects with the annular limiting member 2, since the annular limiting member 2 is a fixed design, after the beveled block 18 passes over the annular limiting member 2, the beveled block 18 will be squeezed upwards and compress the spring 17. At this time, the sliding frame 10 moves upwards, and then the transmission gear 12 drives the gear 13 to rotate. Then the shaft 8 drives the three flipping clamps 9 to flip, thereby firmly clamping both ends of the lever 6, effectively eliminating the vibration and displacement of the lever 6 caused by the rotation of the equipment during the welding process, and ensuring that the lever 6 is welded. Maintaining precise positioning throughout the process greatly improves the quality and accuracy of welding, reduces the defect rate caused by positional deviation, and when the welding piece 6 returns to the loading and unloading area after welding, the angled block 18 moves off the annular limiter 2. At this time, the spring 17 drives the sliding frame 10 to move downward, which in turn causes the flipping structure to automatically flip upward again, automatically canceling the clamping state of the welding piece 6. This greatly facilitates the operator's work of picking up the welded welding piece 6, reduces the labor intensity of manual operation, and improves the smoothness and convenience of the loading and unloading process, which helps to achieve the efficient operation of the entire welding production line.

[0039] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A fixture for laser welding to eliminate rotational vibration shift, comprising a rotary table (1), characterized in that, The turntable (1) is provided with an annular limiting member (2) and a first clamping platform (3) and a second clamping platform (4) symmetrically fixed on the top of the turntable (1). The first clamping platform (3) and the second clamping platform (4) are each fixed with a limiting placement platform (5) and three paddles (6) placed on the limiting placement platform (5). Support frames (7) are fixedly installed at both ends of the two limiting placement platforms (5). A flip clamping assembly is provided on the support frame (7). A drive mechanism for driving the flip clamping assembly to flip is provided below the flip clamping assembly. The driving mechanism includes an elastic limiting mechanism and a transmission mechanism for driving the flip clamping assembly to flip. The elastic limiting mechanism is in a compression fit with the annular limiting member (2).

2. The fixture for laser welding to eliminate rotational vibration displacement according to claim 1, wherein The flip clamping assembly includes a shaft (8) rotatably mounted on the support frame (7) and three flip clamps (9) fixedly sleeved on the shaft (8), the flip clamps (9) cooperating with the lever (6).

3. The fixture for laser welding according to claim 2, wherein The drive flip clamping assembly also includes two sliding frames (10) that slide on the first clamp (3) and the second clamp (4) respectively, and two supports (11) that are fixed at both ends of the sliding frames (10). One end of each of the two supports (11) is fixedly provided with a transmission tooth (12).

4. The fixture for laser welding according to claim 3, wherein Both ends of the shaft (8) are fixedly fitted with gears (13), which mesh with the transmission gears (12) for transmission.

5. The fixture for laser welding according to claim 4, wherein The elastic limiting mechanism includes mounting plates (15) fixed at both ends of the limiting placement platform (5) and two limiting posts (16) fixed at the bottom of the mounting plates (15), with springs (17) sleeved on the limiting posts (16).

6. The fixture for laser welding according to claim 5, wherein The elastic limiting mechanism also includes four arc grooves (14) formed on the sliding frame (10), four limiting posts (16) extending to the bottom of the arc grooves (14) respectively, and four springs (17) set on the top of the sliding frame (10).

7. The fixture for laser welding according to claim 6, wherein The transmission mechanism includes two beveled blocks (18) fixed at one end of the first clamping platform (3) and the second clamping platform (4), respectively. Both beveled blocks (18) are in a compression fit with the same annular limiting member (2).

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