A special fixture for an ultrasonic fully automatic hot melt welding machine

Abstract

This utility model discloses a special fixture for an ultrasonic fully automatic hot melt welding machine, including a base. A support platform is slidably mounted on the upper surface of the base. A first mounting plate is fixedly mounted on one side of the upper surface of the support platform, and a second mounting plate is fixedly mounted on the other side. A sleeve is fixedly mounted on the first mounting plate, and a telescopic rod is slidably mounted inside the sleeve. A cylinder is fixedly mounted on one side of the second mounting plate. Clamping components are fixedly mounted on both the output end of the cylinder and one end of the telescopic rod. A pressure plate is slidably mounted on the opposite side of the clamping components. Two symmetrically arranged S-shaped clamping plates are slidably mounted on the inner surface of the pressure plate. Through the clamping blocks, pressure plates, clamping plates, second spring, first spring, and telescopic rod, the workpiece can be vibration damped during welding, preventing vibration energy from being transmitted to adjacent components, causing resonance or energy loss, resulting in uneven welding pressure distribution. At the same time, it avoids micro-displacement caused by high-frequency vibration of thin-walled workpieces, greatly improving welding quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of special fixtures for welding machines, and in particular relates to a special fixture for an ultrasonic fully automatic hot melt welding machine. Background Technology

[0002] The working principle of an ultrasonic welding machine is as follows: a high-frequency signal is generated by an oscillating circuit and converted into mechanical energy by a transducer. This energy is transmitted to the plastic workpiece through the welding head. The joint surface of the plastic workpiece is melted by intense friction due to the vibration of hundreds of thousands of times per second and the pressure. After the vibration stops, the pressure maintained on the workpiece for a short period of time causes the two welded parts to solidify into one piece by molecular bonding.

[0003] In the prior art, Chinese utility model patent CN217169852U discloses a special fixture for an ultrasonic fully automatic hot melt welding machine, including a support and adjustment mechanism, including a base, the upper end of which is provided with a linear slide rail; a clamping mechanism, including a first movable block and a second movable block disposed on both sides of the upper end of the base and sliding on the inner side of the linear slide rail, the upper ends of the first movable block and the second movable block are respectively provided with a first chuck and a second chuck. When it is necessary to weld plastic pipes, two pipes can be directly inserted into the slots of the first chuck and the second chuck for clamping and fixing, and then the first movable block is pushed to move to the position of the second movable block until the ends of the pipes on the two chucks contact each other, and then the pipes are directly welded.

[0004] In the existing technology, the first and second movable blocks can be used to quickly fix plastic pipe fittings and also enable precise docking of the welded ends of the two pipe fittings. However, there are still some shortcomings in overall use:

[0005] Ultrasonic welding relies on high-frequency vibration to generate frictional heat energy to achieve material fusion. If the workpiece is not subjected to vibration damping measures, the vibration energy will be transmitted to the fixture or adjacent components, causing resonance or energy loss, resulting in uneven distribution of welding pressure. At the same time, for some thin-walled workpieces, high-frequency vibration without damping can easily cause micro-displacement, leading to misalignment of the welding surface or incomplete welding, which seriously affects the welding quality. Existing devices cannot effectively dampen the clamped workpieces, and cannot further improve the welding quality. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model provides a special fixture for an ultrasonic fully automatic hot melt welding machine. This utility model solves the technical problem that, during welding, the lack of vibration damping leads to uneven welding pressure distribution, and high-frequency vibration on thin-walled workpieces easily causes micro-displacement, resulting in misalignment of the welding surface and affecting welding quality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a special fixture for an ultrasonic fully automatic hot melt welding machine, comprising a base, a support platform slidably mounted on the upper surface of the base, a first mounting plate fixedly mounted on one side of the upper surface of the support platform, and a second mounting plate fixedly mounted on the other side, a sleeve fixedly mounted on one side of the first mounting plate, a telescopic rod slidably mounted inside the sleeve for lateral vibration damping of the workpiece during welding, a cylinder fixedly mounted on one side of the second mounting plate, a clamping assembly fixedly mounted on the output end of the cylinder and one end of the telescopic rod, a pressure plate slidably mounted on the opposite side of the clamping assembly, and two symmetrically arranged S-shaped clamping plates slidably mounted on the inner surface of the pressure plate for vertical vibration damping of the workpiece during welding.

[0008] In the aforementioned special fixture for an ultrasonic fully automatic hot melt welding machine, a second spring is fixedly installed between the side of the clamping plate and the inner surface of the pressure plate.

[0009] In the aforementioned special fixture for a fully automatic ultrasonic hot melt welding machine, the sleeve has an installation groove inside, a first spring is fixedly installed inside the installation groove, the telescopic rod slides inside the installation groove, and one end of the installation groove is fixed to one end of the first spring.

[0010] In the aforementioned special fixture for a fully automatic ultrasonic hot melt welding machine, the clamping assembly includes clamping blocks fixedly installed at the output end of the cylinder and the end of the telescopic rod. Two symmetrically arranged second sliding grooves are opened on the opposite surfaces of the two clamping blocks. Moving blocks are slidably installed inside the second sliding grooves, and the pressure plate is fixedly installed between the two moving blocks.

[0011] In the aforementioned special fixture for a fully automatic ultrasonic hot melt welding machine, a U-shaped frame is fixedly installed on the upper surface of the clamping block. A third sliding groove is provided on both sides of the U-shaped frame. A horizontal plate is slidably installed inside the two third sliding grooves. A vertical rod is fixedly installed on the lower surface of both ends of the horizontal plate. The vertical rod slides through the clamping block and is fixedly fixed to the upper surface of the moving block. A first threaded rod is threadedly installed on the top of the U-shaped frame. The first threaded rod passes through the U-shaped frame and is rotatably installed with the upper surface of the horizontal plate.

[0012] In the aforementioned special fixture for a fully automatic ultrasonic hot melt welding machine, a second threaded rod is threaded onto the top of the pressure plate. The second threaded rod passes through the pressure plate and has an arc-shaped plate rotatably mounted at its end.

[0013] In the aforementioned special fixture for fully automatic ultrasonic hot melt welding machine, two symmetrically arranged limiting blocks are fixedly installed on the upper surface of the support platform, and a V-shaped groove is opened in the middle of the limiting blocks.

[0014] In the aforementioned special fixture for a fully automatic ultrasonic hot melt welding machine, a first sliding groove is provided on the upper surface of the base. A lead screw is rotatably installed inside the first sliding groove, and a slider that slides inside the first sliding groove is threaded onto the surface of the lead screw. The upper surface of the slider is fixed to the lower surface of the support.

[0015] In summary, compared with the prior art, the special fixture for a fully automatic ultrasonic hot melt welding machine provided by this utility model has the following beneficial effects:

[0016] This invention, through the arrangement of clamping blocks, pressure plates, a first spring, and telescopic rods, can effectively dampen the workpiece during welding, absorb vibration energy to prevent it from being transmitted to adjacent components and causing resonance or energy loss, effectively ensure the uniformity of welding pressure distribution, avoid high-frequency vibration of thin-walled workpieces, reduce micro-displacement, and greatly improve welding quality. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 4 for Figure 2 Schematic diagram of the structure at point BB in the diagram;

[0021] Figure 5 for Figure 3 Enlarged structural diagram at point C;

[0022] Figure 6 for Figure 1 Enlarged structural diagram at point D;

[0023] Figure 7 for Figure 4 A magnified structural diagram at point E in the diagram.

[0024] In the diagram: Base 10; Mounting block 11; First slide groove 12; Lead screw 13; Slider 14; Rotary wheel 15; Support 16; Limiting block 17; V-groove 18; First mounting plate 19; Sleeve 20; Mounting groove 21; First spring 22; Telescopic rod 23; Second mounting plate 24; Cylinder 25; Clamping block 26; Second slide groove 27; Moving block 28; Pressure plate 29; U-shaped frame 30; Third slide groove 31; Horizontal plate 32; Vertical rod 33; First threaded rod 34; Clamping plate 35; Second spring 36; Second threaded rod 37; Arc plate 38. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] refer to Figure 1 , Figure 2 and Figure 3 A special fixture for an ultrasonic fully automatic hot melt welding machine includes a base 10. Mounting blocks 11 are fixedly installed on the front and rear sides of the base 10. The mounting blocks 11 have fixing holes and fixing bolts for fixing the fixture body onto the ultrasonic fully automatic hot melt welding machine. A first sliding groove 12 is formed in the middle of the base 10. A lead screw 13 is rotatably installed inside the first sliding groove 12. One end of the lead screw 13 passes through the base 10, and a rotating wheel 15 is fixedly installed at its outer end. A slider 14, which slides inside the mounting blocks 11, is threaded onto the surface of the lead screw 13. A support platform 16 is fixedly installed at the top of the slider 14 to support the workpiece. In use, the rotating wheel 15 drives the connected lead screw 13 to rotate. Since the slider 14 and the lead screw 13 are threaded together, when the lead screw 13 rotates, the slider 14 slides inside the first sliding groove 12 due to the limiting of the first sliding groove 12. This causes the support platform 16 to slide to both sides, thereby moving the supported workpiece. This facilitates the movement of the workpiece, makes it easier to align with the welding head of the welding machine, improves welding accuracy, and greatly enhances the performance.

[0027] Further reference Figure 1 Two symmetrically arranged limiting blocks 17 are fixedly installed in the middle of the upper surface of the support 16. The gap between the two limiting blocks 17 is used for workpiece welding. A V-groove 18 is opened in the middle of the limiting block 17. When in use, the workpiece is placed in the V-groove 18. Through the V-shaped setting, the workpiece can be automatically aligned and positioned, which facilitates the subsequent clamping work.

[0028] Further reference Figure 1A second mounting plate 24 is fixedly installed on one side of the limiting block 17 and on the upper surface of the support platform 16. A cylinder 25 is fixedly installed on the side of the second mounting plate 24 near the limiting block 17. A clamping assembly is fixedly installed at the conveying end of the cylinder 25. The clamping assembly includes a clamping block 26. Two symmetrically arranged second sliding grooves 27 are opened on the surface of the clamping block 26. A moving block 28 is slidably installed inside the second sliding groove 27. An arc-shaped pressure plate 29 is fixedly installed between the two moving blocks 28. The upper surface of the second sliding groove 27 is fixed. A U-shaped frame 30 is installed, and a first threaded rod 34 is threaded onto the top of the U-shaped frame 30. The bottom end of the first threaded rod 34 passes through the top of the U-shaped frame 30. Third sliding grooves 31 are provided on both sides of the U-shaped frame 30. A horizontal plate 32 is slidably installed between the two third sliding grooves 31. The upper surface of the horizontal plate 32 is rotatably installed with the bottom end of the first threaded rod 34. Vertical rods 33 are fixedly installed on the lower surfaces of both ends of the horizontal plate 32. The vertical rods 33 slide through the clamping block 26 and are fixed to each other with the upper surface of the moving block 28.

[0029] In use, the cylinder 25 drives each clamping block 26 to move forward, thereby moving the pressure plate 29 above the workpiece via the clamping blocks 26. Then, the first threaded rod 34 is rotated clockwise. Since the first threaded rod 34 is threadedly installed with the U-shaped frame 30, the bottom of the first threaded rod 34 moves downward as it rotates, causing the horizontal plate 32 to slide downward inside the third slide groove 31. This causes the vertical rod 33 connected to it to also move downward, which in turn causes the moving block 28 to move downward inside the second slide groove 27. This causes the pressure plate 29 to move downward and press against the top of the workpiece, fixing it in place and facilitating subsequent welding. It should be noted that when the first threaded rod 34 is rotated counterclockwise, the entire rod moves upward.

[0030] Further reference Figure 4 and Figure 7Two symmetrically arranged clamping plates 35 are slidably mounted on the inner surface of the pressure plate 29. The clamping plates 35 are S-shaped. A second spring 36 is fixedly installed between the side of the clamping plate 35 and the inner surface of the pressure plate 29. A second threaded rod 37 is threaded onto the top of the pressure plate 29. The bottom end of the second threaded rod 37 passes through the pressure plate 29 and is rotatably mounted with an arc-shaped plate 38. In use, the lower arc shape of the clamping plate 35 facilitates the opening of the two clamping plates 35 when pressing the workpiece, so that the upper part of the clamping plate 35 clamps the workpiece. Then, the second threaded rod 37 is rotated clockwise. The threaded installation between the pressure plates 29 causes the second threaded rod 37 to move downwards while rotating, driving the arc plate 38 to move downwards and press against the workpiece. The arc plate 38 abuts against the workpiece, completing the workpiece limiting while also limiting itself. When welding the workpiece, the second spring 36 is used to dampen the workpiece, preventing vibration energy from being transmitted to adjacent parts, causing resonance or energy loss, resulting in uneven welding pressure distribution. At the same time, it avoids micro-displacement caused by high-frequency vibration of thin-walled workpieces, greatly improving welding quality. Similarly, rotating the second threaded rod 37 counterclockwise will cause it to move upwards.

[0031] Further reference Figure 1 , Figure 3 and Figure 5 A first mounting plate 19 is fixedly installed on one side of the limiting block 17 on the upper surface of the support 16. A sleeve 20 is fixedly installed on the side of the first mounting plate 19 near the limiting block 17. An installation groove 21 is opened inside the sleeve 20. A first spring 22 is fixedly installed inside the installation groove 21, and a telescopic rod 23 is slidably installed inside the installation groove 21. One end of the telescopic rod 23 located inside the sleeve 20 is fixed to one end of the first spring 22. A clamping assembly is fixedly installed on the other end of the telescopic rod 23. In use, another workpiece is fixed by the above clamping assembly principle. When the two workpieces are welded together, the first spring 22 also dampens the workpiece, further improving the damping effect.

[0032] It should be noted that the first spring 22 and the second spring 36 are shock-absorbing springs, which can absorb vibrations without increasing them. This is existing technology and is made of shock-absorbing material. It will not be described in detail in this solution.

[0033] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0034] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0035] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A special fixture for an ultrasonic fully automatic hot melt welding machine, comprising a base (10), characterized in that, A support platform (16) is slidably mounted on the upper surface of the base (10). A first mounting plate (19) is fixedly mounted on one side of the upper surface of the support platform (16), and a second mounting plate (24) is fixedly mounted on the other side. A sleeve (20) is fixedly mounted on one side of the first mounting plate (19). A telescopic rod (23) is slidably mounted inside the sleeve (20) for lateral vibration reduction of the workpiece during welding. A cylinder (25) is fixedly mounted on one side of the second mounting plate (24). A clamping assembly is fixedly mounted on the output end of the cylinder (25) and one end of the telescopic rod (23). A pressure plate (29) is slidably mounted on the opposite side of the clamping assembly. Two symmetrically arranged S-shaped clamping plates (35) are slidably mounted on the inner surface of the pressure plate (29) for vertical vibration reduction of the workpiece during welding.

2. The special fixture for an ultrasonic fully automatic hot melt welding machine according to claim 1, characterized in that, A second spring (36) is fixedly installed between the side of the clamping plate (35) and the inner surface of the pressure plate (29).

3. The special fixture for an ultrasonic fully automatic hot melt welding machine according to claim 1, characterized in that, The sleeve (20) has an installation groove (21) inside, and a first spring (22) is fixedly installed inside the installation groove (21). The telescopic rod (23) slides inside the installation groove (21), and one end of the installation groove (21) is fixed to one end of the first spring (22).

4. The special fixture for a fully automatic ultrasonic hot melt welding machine according to claim 1, characterized in that, The clamping assembly includes clamping blocks (26) fixedly installed at the output end of the cylinder (25) and the end of the telescopic rod (23). Two symmetrically arranged second sliding grooves (27) are opened on the opposite surfaces of the two clamping blocks (26). A moving block (28) is slidably installed inside the second sliding groove (27). The pressure plate (29) is fixedly installed between the two moving blocks (28).

5. A special fixture for an ultrasonic fully automatic hot melt welding machine according to claim 4, characterized in that, A U-shaped frame (30) is fixedly installed on the upper surface of the clamping block (26). A third sliding groove (31) is provided on both sides of the U-shaped frame (30). A horizontal plate (32) is slidably installed inside the two third sliding grooves (31). A vertical rod (33) is fixedly installed on the lower surface of both ends of the horizontal plate (32). The vertical rod (33) slides through the clamping block (26) and is fixed to the upper surface of the moving block (28). A first threaded rod (34) is threadedly installed on the top of the U-shaped frame (30). The first threaded rod (34) passes through the U-shaped frame (30) and is rotatably installed on the upper surface of the horizontal plate (32).

6. A special fixture for an ultrasonic fully automatic hot melt welding machine according to claim 4, characterized in that, The top of the pressure plate (29) is threaded with a second threaded rod (37), which passes through the pressure plate (29) and has an arc-shaped plate (38) rotatably mounted at its end.

7. A special fixture for an ultrasonic fully automatic hot melt welding machine according to claim 1, characterized in that, Two symmetrically arranged limiting blocks (17) are fixedly installed on the upper surface of the support (16), and a V-shaped groove (18) is opened in the middle of the limiting block (17).

8. A special fixture for an ultrasonic fully automatic hot melt welding machine according to claim 1, characterized in that, The upper surface of the base (10) is provided with a first sliding groove (12), and a lead screw (13) is rotatably installed inside the first sliding groove (12). A slider (14) that slides inside the first sliding groove (12) is threaded on the surface of the lead screw (13). The upper surface of the slider (14) is fixed to the lower surface of the support (16).

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