High-frequency plastic rotary fusion welding jig

Abstract

The invention discloses a high-frequency plastic rotary fusion welding jig which comprises an upper die and a base. The two ends of the top of the base are connected with a left cushion block and a right cushion block correspondingly, the top of the left cushion block is further connected with a left clamping block, and the top of the right cushion block is further connected with a clamping driving assembly. The clamping driving assembly is further in driving connection with a right clamping block, and the left clamping block and the right clamping block are oppositely arranged. A fixing block is further connected to the position, located on one side of the left cushion block, of the top of the base. The upper die is arranged above the left clamping block and the right clamping block, and the bottom of the upper die is further connected with a containing block. And a placing groove is formed in the bottom of the placing block. According to the invention, the problems of precise positioning and reliable fixing of long pipe products in the rotary fusion welding process can be solved.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic welding technology for plastic products, and in particular to a high-frequency plastic spin welding fixture. Background Technology

[0002] In the plastics manufacturing industry, injection-molded components often need to be assembled and sealed to meet product performance and usage requirements. For tubing-type plastic products, such as breathing tubing assemblies in medical devices, multiple injection-molded components typically need to be connected and secured.

[0003] Currently, the commonly used assembly methods in the industry mainly include two structures: snap-fit ​​connections and screw fixation. However, these traditional assembly methods have obvious limitations: on the one hand, due to the limitations of product size and internal structure, snap-fit ​​or screw fixation structures are difficult to achieve effective assembly in some slender pipe products; on the other hand, for products with sealing requirements, conventional mechanical connection methods often fail to achieve the expected sealing effect, thus affecting the overall performance and reliability of the product.

[0004] To address the aforementioned issues, ultrasonic welding technology has been introduced into the assembly of plastic products. Ultrasonic welding utilizes high-frequency vibration waves transmitted to the surfaces of two objects to be welded. Under pressure, the surfaces rub against each other, causing fusion between molecular layers. Spin welding, a special form of ultrasonic welding, is particularly suitable for welding round or tubular plastic products.

[0005] However, in actual production, it has been found that for high-frequency spin welding of long tubular products, the lack of dedicated positioning fixtures makes the products prone to displacement or rotation during the welding process. This leads to problems such as welding position deviation and poor sealing, seriously affecting product quality and production efficiency. Therefore, there is an urgent need to develop a fixture specifically designed for high-frequency plastic spin welding to solve the problem of accurate positioning and reliable fixation of long tubular products during the spin welding process. Summary of the Invention

[0006] The purpose of this invention is to provide a high-frequency plastic spin welding fixture to solve the problems of accurate positioning and reliable fixation of long tube products during spin welding.

[0007] To achieve the above objectives, the following technical solution is adopted: A high-frequency plastic spin welding fixture includes an upper mold and a base. A left pad and a right pad are connected to the top two ends of the base, respectively. A left clamping block is connected to the top of the left pad, and a clamping drive assembly is connected to the top of the right pad. The clamping drive assembly also drives the right clamping block, with the left and right clamping blocks positioned opposite each other. A fixing block is connected to the top of the base on one side of the left pad. The upper mold is positioned above the left and right clamping blocks, and a placement block is connected to the bottom of the upper mold. A placement groove is formed at the bottom of the placement block.

[0008] Furthermore, the upper mold has a cylindrical structure, and a first mounting groove is provided at the bottom of the upper mold; the placement block is locked into the first mounting groove by a first cup head screw.

[0009] Furthermore, a limiting slot is provided on the top of the fixing block.

[0010] Furthermore, a limit card hole is also provided at one end of the limit card slot along the vertical direction.

[0011] Furthermore, the left clamping block has an L-shaped structure, with the horizontal end of the L-shaped left clamping block connected to the top of the left pad block, and the vertical end of the L-shaped left clamping block facing the right clamping block; a first clamping groove is also provided on the side of the vertical end of the L-shaped left clamping block facing the right clamping block in the vertical direction, and the first clamping groove extends to the top and bottom of the vertical end of the L-shaped left clamping block.

[0012] Furthermore, a second clamping groove is also provided on one side of the right clamping block at the location corresponding to the first clamping groove in the vertical direction, and the second clamping groove extends to the top and bottom of the right clamping block; a clamping hole is formed between the first clamping groove and the second clamping groove.

[0013] Furthermore, both the first clamping groove and the second clamping groove have a semi-circular cross-section.

[0014] Furthermore, the clamping drive assembly includes a first mounting block connected to the top of the right pad block, and a chuck clamping clamp mounted on the top of the first mounting block; the other side of the right clamping block is connected to the output end of the chuck clamping clamp.

[0015] By adopting the above solution, the beneficial effects of the present invention are: This fixture can effectively fix the position and orientation of the semi-finished pipeline body through the limiting slots and holes on the fixing block, preventing the product from rotating or shifting during welding. At the same time, the upper part of the pipeline body can be clamped and limited by the left and right clamping blocks to ensure its stability during welding, thereby ensuring welding quality and product consistency. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the product; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is an exploded view of the present invention omitting the base, left pad, and right pad; Figure 4 This is an exploded view of the upper mold and the placement block of the present invention; Figure 5 This is a schematic diagram of the structure of the fixing block of the present invention; The following are explanations of the reference numerals in the attached figures: 1. Upper mold; 2. Base; 3. Fixing block; 11. Placement block; 12. Placement groove; 21. Left pad block; 22. Right pad block; 23. Left clamping block; 24. Right clamping block; 25. First mounting block; 26. Clamping clamp; 27. First clamping groove; 31. Limiting slot; 32. Limiting hole. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] Reference Figures 1 to 5 As shown, the present invention provides a high-frequency plastic spin welding fixture. In one embodiment, it includes an upper mold 1 and a base 2. The top two ends of the base 2 are respectively connected to a left pad 21 and a right pad 22. The top of the left pad 21 is also connected to a left clamping block 23, and the top of the right pad 22 is also connected to a clamping drive assembly. The clamping drive assembly also drives a right clamping block 24. The left clamping block 23 and the right clamping block 24 are arranged opposite to each other. The top of the base 2 is also connected to a fixing block 3 on one side of the left pad 21. The upper mold 1 is arranged above the left clamping block 23 and the right clamping block 24, and the bottom of the upper mold 1 is also connected to a placement block 11. The bottom of the placement block 11 is provided with a placement groove 12.

[0019] like Figure 1 As shown, the products targeted by this invention are a semi-finished pipe body (with the vent plug ultrasonically installed) and a suction nozzle, both made of PP material. The characteristic of this invention is that the two have sealing requirements after assembly. The lower section of the semi-finished pipe body has a pipe positioning surface (fixed direction) and a Z-axis support surface, the upper section of the pipe body has an ultrasonic support, and the inside of the suction nozzle has an ultrasonic mounting position.

[0020] The fixture of the present invention is divided into two parts: the upper part has an upper mold 1 and a placement block 11. The upper mold 1 is made of aluminum alloy and the placement block 11 is made of POM sheet material. The upper mold 1 has a cylindrical structure and a first mounting groove is provided at the bottom of the upper mold 1. The placement block 11 is locked into the first mounting groove by a first cup-head screw. The placement block 11 is locked in the upper mold 1 with a cup-head screw, and the entire upper part of the fixture is locked to the head of the spin welding machine with a cup-head screw.

[0021] The lower half of the fixture includes a base 2, a fixing block 3, left and right pads 22, a first mounting block 25, and left and right clamping blocks 24 (all made of aluminum alloy). These are fixed using corresponding cup-head screws and include standard parts: a quick-release chuck clamp 26 and a nut washer. The fixing base has a product positioning surface that prevents rotation. The left and right clamping blocks 24 clamp the product after the quick-release chuck clamp 26 is closed. Specifically: The top of the fixing block 3 has a limiting groove 31; one end of the limiting groove 31 also has a limiting hole 32 in the vertical direction; the left clamping block 23 has an L-shaped structure, the horizontal end of the left clamping block 23 is connected to the top of the left pad block 21, and the vertical end of the left clamping block 23 is set towards the right clamping block 24; the side of the vertical end of the left clamping block 23 facing the right clamping block 24 also has a first clamping groove 27 in the vertical direction, and the first clamping groove 27 extends to the top and bottom of the vertical end of the left clamping block 23; the right clamping block A second clamping groove is also provided vertically on one side of the right clamping block 24, corresponding to the first clamping groove 27, and the second clamping groove extends to the top and bottom of the right clamping block 24; a clamping hole is formed between the first clamping groove 27 and the second clamping groove; the cross-sections of the first clamping groove 27 and the second clamping groove are both semi-circular; the clamping drive assembly includes a first mounting block 25 connected to the top of the right pad block 22, and a chuck clamping clamp 26 mounted on the top of the first mounting block 25; the other side of the right clamping block 24 is connected to the output end of the chuck clamping clamp 26.

[0022] When using it, first fix the high-intensity ultrasonic plastic spin welding fixture on the ultrasonic spin welding machine, and after debugging, proceed as follows: 1) Open the quick-release clamping pliers 26; 2) Insert the suction nozzle into the placement groove 12 at the bottom of the placement block 11 from bottom to top. The suction nozzle and the hole of the placement groove 12 are fitted with a very small clearance to ensure that the high belt will not come loose when it rotates. 3) Place the semi-finished pipe body into the fixing block 3. Pay attention to the product positioning surface and direction so that the lower part of the semi-finished pipe body is inserted into the limiting card hole 32, the pipe position surface of the semi-finished pipe body faces the left pad block 21, and the Z-direction support surface of the semi-finished pipe body is locked in the limiting card groove 31. 4) Close the quick clamp clamp 26. The main semi-finished pipe body is clamped through the clamping hole. Then press the two green buttons on the ultrasonic machine to perform high-frequency spin melting ultrasonic operation. After completion, remove the product and enter the next work cycle, thereby meeting the normal demolding and production needs of this type of product.

[0023] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-frequency plastic spin welding fixture, characterized in that, The device includes an upper mold and a base. A left pad and a right pad are connected to the top two ends of the base, respectively. A left clamping block is connected to the top of the left pad, and a clamping drive assembly is connected to the top of the right pad. The clamping drive assembly also drives the right clamping block, with the left and right clamping blocks positioned opposite each other. A fixing block is connected to the top of the base, located to one side of the left pad. The upper mold is positioned above the left and right clamping blocks, and a placement block is connected to the bottom of the upper mold. A placement groove is provided at the bottom of the placement block.

2. The high-frequency plastic spin welding fixture according to claim 1, characterized in that, The upper mold has a cylindrical structure, and a first mounting groove is provided at the bottom of the upper mold; the placement block is locked into the first mounting groove by a first cup head screw.

3. The high-frequency plastic spin welding fixture according to claim 1, characterized in that, A limiting slot is provided on the top of the fixing block.

4. The high-frequency plastic spin welding fixture according to claim 3, characterized in that, One end of the limiting slot is also provided with a limiting hole along the vertical direction.

5. The high-frequency plastic spin welding fixture according to claim 1, characterized in that, The left clamping block has an L-shaped structure. The horizontal end of the L-shaped left clamping block is connected to the top of the left pad block, and the vertical end of the L-shaped left clamping block is set towards the right clamping block. The side of the vertical end of the L-shaped left clamping block facing the right clamping block is also provided with a first clamping groove in the vertical direction, and the first clamping groove extends to the top and bottom of the vertical end of the L-shaped left clamping block.

6. The high-frequency plastic spin welding fixture according to claim 5, characterized in that, A second clamping groove is also provided on one side of the right clamping block at the location corresponding to the first clamping groove in the vertical direction, and the second clamping groove extends to the top and bottom of the right clamping block; a clamping hole is formed between the first clamping groove and the second clamping groove.

7. The high-frequency plastic spin welding fixture according to claim 6, characterized in that, Both the first clamping groove and the second clamping groove have a semi-circular cross-section.

8. The high-frequency plastic spin welding fixture according to claim 1, characterized in that, The clamping drive assembly includes a first mounting block connected to the top of the right pad block, and a chuck clamping clamp mounted on the top of the first mounting block; the other side of the right clamping block is connected to the output end of the chuck clamping clamp.

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