Jig for ultrasonic welding of plastic parts

Abstract

The utility model discloses a kind of jigs for ultrasonic welding of plastic parts, the jig for ultrasonic welding of plastic parts includes: bottom plate, first clamping component, second clamping component, third clamping component and fourth clamping component;First clamping component, second clamping component, third clamping component and fourth clamping component are installed in the top side surface of bottom plate;The top side surface of bottom plate is provided with a plurality of first sliding groove and a plurality of second sliding groove;A plurality of first sliding groove is mutually parallel and arranged on the top side surface of bottom plate along the width direction of bottom plate;A plurality of second sliding groove is mutually parallel and arranged on the top side surface of bottom plate along the length direction of bottom plate;First clamping component, second clamping component, third clamping component and fourth clamping component are respectively and a plurality of first sliding groove and a plurality of second sliding groove sliding cooperation.The jig for ultrasonic welding of plastic parts is set on the surface of bottom plate by net-shaped sliding groove system that is mutually staggered and size is uniform, and full-plane stepless positioning is realized.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a fixture for ultrasonic welding of plastic parts. Background Technology

[0002] A welding fixture (or welding jig) is an auxiliary tool or device specifically designed to precisely fix, position, and support workpieces during the welding process. It falls under the category of "tooling fixtures," and its core purpose is to ensure that the parts being welded maintain the correct position, orientation, and relative relationship during operation, thereby guaranteeing welding quality, improving production efficiency, and ensuring consistency. The core functions and characteristics of welding fixtures mainly include: precise fixing and positioning, firmly fixing two or more workpieces to be welded in preset relative positions, ensuring that their joints, lap surfaces, or connection points are completely aligned and the gaps meet requirements; preventing deformation, as the welding process generates heat and stress, causing workpieces to shrink, warp, or twist, the fixture effectively suppresses or reduces this deformation through rigid support and constraint; improving efficiency and consistency, quickly and reliably clamping workpieces, reducing the time for manual alignment and positioning by workers, and ensuring that every workpiece in the same batch is fixed and welded in exactly the same way; ensuring operational safety, firmly fixing workpieces to prevent them from moving, slipping, or accidentally popping out during the welding process, protecting the safety of operators and equipment; and adapting to specific process requirements, potentially integrating conductive blocks (resistance welding), protective gas channels (gas shielded welding), cooling water channels (controlling the heat-affected zone), sensor interfaces, etc., to meet the special requirements of specific welding processes. The key components (common) of existing welding fixtures are: base / base plate, which provides mounting reference and overall rigidity; positioning elements, such as positioning pins, stops, V-blocks, etc., which determine the correct position of the workpiece in space; clamping elements, such as clamps, pressure plates, cylinders, hydraulic cylinders, screws, etc., which apply force to press the workpiece onto the positioning elements; support elements, such as support blocks, pads, etc., which prevent the workpiece from deforming under gravity or welding stress; guide / adjustment elements (optional), such as slide rails, grooves, sliders, etc., which enable flexible adjustment of component positions; and connectors and fasteners, which assemble the components together.

[0003] However, among existing welding fixtures, those used for ultrasonic welding of plastic parts lack sufficient adjustability to cope with various working conditions, resulting in low versatility, flexibility of use, and changeover efficiency of the fixtures. Utility Model Content

[0004] Therefore, it is necessary to provide a fixture for ultrasonic welding of plastic parts to address the technical problem that existing fixtures for ultrasonic welding of plastic parts have insufficient adjustability to cope with various working conditions.

[0005] A fixture for ultrasonic welding of plastic parts includes a base plate, a first clamping assembly, a second clamping assembly, a third clamping assembly, and a fourth clamping assembly; the first clamping assembly, the second clamping assembly, the third clamping assembly, and the fourth clamping assembly are all mounted on the top side surface of the base plate, thereby forming a basic clamping structure on the top side of the base plate.

[0006] The top side surface of the base plate is provided with a plurality of first sliding grooves and a plurality of second sliding grooves; the plurality of first sliding grooves are arranged parallel to each other along the width direction of the base plate on the top side surface of the base plate; the plurality of second sliding grooves are arranged parallel to each other along the length direction of the base plate on the top side surface of the base plate; each first sliding groove and each second sliding groove are configured as grooves with equal groove depth and groove width, and the plurality of first sliding grooves and the plurality of second sliding grooves are respectively staggered to form a mesh sliding adjustment structure.

[0007] The first clamping assembly, the second clamping assembly, the third clamping assembly, and the fourth clamping assembly are respectively slidably engaged with a plurality of first slide grooves and a plurality of second slide grooves.

[0008] In one embodiment, the first clamping component and the second clamping component are respectively disposed at both ends of the base plate along the width direction of the base plate.

[0009] In one embodiment, the first clamping assembly includes a first side-pushing unit and a plurality of first-pressing units. The first side-pushing unit and the plurality of first-pressing units are disposed in the corresponding end areas of the base plate and slide in cooperation with the corresponding first slide groove and second slide groove, respectively.

[0010] In one embodiment, the first side thrust unit described above is configured as a horizontally mounted thin cylinder with a guide rod.

[0011] In one embodiment, each of the first pressure units described above is configured as a vertically mounted standard cylinder, and the top output end of the standard cylinder is connected to an L-shaped pressure rod.

[0012] In one embodiment, the second clamping assembly includes a second side-pushing unit and a plurality of second top-pressing units, and the second clamping assembly is mirror-image of the first clamping assembly.

[0013] In one embodiment, the third clamping component and the fourth clamping component are respectively disposed on both sides of the base plate along the length direction of the base plate.

[0014] In one embodiment, the third clamping assembly includes a third side pushing unit and a plurality of third pressing units. The third side pushing unit and the plurality of third pressing units are disposed in the corresponding side area of ​​the base plate and slide in cooperation with the corresponding first slide groove and second slide groove, respectively.

[0015] In one embodiment, the aforementioned third side thrust unit is configured as a horizontally mounted thin cylinder with a guide rod.

[0016] In one embodiment, each of the aforementioned third pressure units is configured as a vertically mounted standard cylinder, and the top output end of the standard cylinder is connected to an L-shaped pressure rod.

[0017] In one embodiment, the aforementioned fourth clamping assembly includes a plurality of fourth side pushing units and a plurality of fourth pressing units. The plurality of fourth side pushing units and the plurality of fourth pressing units are disposed in the corresponding side areas of the base plate and slide in cooperation with the corresponding first slide groove and second slide groove, respectively.

[0018] In one embodiment, each of the aforementioned fourth side thrust units is configured as a horizontally mounted thin cylinder with a guide rod.

[0019] In one embodiment, each of the fourth top-pressing units described above is configured as a vertically mounted standard cylinder, and the top output end of the standard cylinder is connected to an L-shaped pressure rod.

[0020] In one embodiment, the fixture for ultrasonic welding of plastic parts further includes a plurality of movable baffles, which are respectively movably connected to a plurality of first slides and a plurality of second slides.

[0021] In one embodiment, the base plate is further provided with a plurality of clearance holes, which are respectively provided at the top corners of the adjacent areas of the first clamping component, the second clamping component, the third clamping component and the fourth clamping component.

[0022] The aforementioned fixture for ultrasonic welding of plastic parts achieves stepless positioning across the entire plane by setting an interlocking and uniformly sized mesh groove system on the surface of the base plate. All grooves have uniform depth and width, and are interlocked to form a dense mesh node. The four clamping components can slide and be positioned at any mesh node position within the entire base plate plane (covering the X and Y axes), breaking through the positioning limitations of traditional fixtures with fixed holes or single grooves, and providing near-continuous position adjustment capability. Specifically, regarding shape adaptability, the four clamping components can be freely combined into any rectangular, non-rectangular, or even asymmetrical clamping frames within the grid's allowable range, according to the contour of the plastic part. Regarding size adaptability, by adjusting the relative distance between the four clamping components on the grid, it can accommodate various sizes of plastic parts, ranging from the minimum grid spacing to near the maximum size of the base plate, significantly expanding the fixture's versatility. Regarding clamping posture adaptability, the mesh groove allows the clamping components to be positioned arbitrarily in the plane. For plastic parts with non-standard angle placement or special positioning requirements, the clamping components can be precisely adjusted to the optimal force application point, ensuring stable and reliable clamping and optimizing the ultrasonic energy transmission path. Based on the above-mentioned high adaptability, there is no need to customize a special fixture for each specific shape / size of plastic part, greatly reducing fixture inventory, manufacturing costs, and management complexity, and significantly improving fixture utilization and economy. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the fixture used for ultrasonic welding of plastic parts in one embodiment. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Please see Figure 1This utility model discloses a fixture 1 for ultrasonic welding of plastic parts. The fixture 1 includes a base plate 10, a first clamping assembly 20, a second clamping assembly 30, a third clamping assembly 40, and a fourth clamping assembly 50. The first clamping assembly 20, the second clamping assembly 30, the third clamping assembly 40, and the fourth clamping assembly 50 are all mounted on the top side surface of the base plate 10, thereby forming a basic clamping structure on the top side of the base plate 10. Specifically, the top side surface of the base plate 10 is provided with a plurality of first sliding grooves a and a plurality of second sliding grooves b. The plurality of first sliding grooves a are arranged parallel to each other on the top side surface of the base plate 10 along the width direction of the base plate 10. The plurality of second sliding grooves b are arranged parallel to each other on the top side surface of the base plate 10 along the length direction of the base plate 10. Each first sliding groove a and each second sliding groove b is configured as a groove with equal groove depth and groove width. Furthermore, the plurality of first sliding grooves a and the plurality of second sliding grooves b are staggered to form a mesh sliding adjustment structure. Based on the above configuration, the first clamping component 20, the second clamping component 30, the third clamping component 40, and the fourth clamping component 50 are respectively slidably engaged with a plurality of first sliding grooves a and a plurality of second sliding grooves b, thereby enabling the first clamping component 20, the second clamping component 30, the third clamping component 40, and the fourth clamping component 50 to slide and adjust their positions relative to the base plate 10 to adapt to the clamping of plastic parts of different shapes, postures, and sizes, greatly improving the flexibility of the fixture. Based on this, the fixture 1 for ultrasonic welding of plastic parts of this utility model achieves stepless positioning across the entire plane by setting an interlaced and uniformly sized mesh sliding groove system on the surface of the base plate 10. All sliding grooves have uniform depth and width, and are interlaced to form a dense grid of nodes. The four clamping components can slide and be positioned at any grid node position within the entire plane of the base plate 10 (covering the X and Y axes), breaking through the positioning limitations of traditional fixtures with fixed holes or single sliding grooves, and providing near-continuous position adjustment capability. Specifically, regarding shape adaptability, the four clamping components can be freely combined into any rectangular, non-rectangular, or even asymmetrical clamping frames within the grid's allowable range, according to the contour of the plastic part. Regarding size adaptability, by adjusting the relative distance between the four clamping components on the grid, it can accommodate various sizes of plastic parts, ranging from the minimum grid spacing to nearly 10 times the maximum size of the base plate, significantly expanding the fixture's versatility. Regarding clamping posture adaptability, the mesh groove allows the clamping components to be positioned arbitrarily in the plane. For plastic parts with non-standard angle placement or special positioning requirements, the clamping components can be precisely adjusted to the optimal force application point, ensuring stable and reliable clamping and optimizing the ultrasonic energy transmission path. Based on the above-mentioned high adaptability, there is no need to customize a special fixture for each specific shape / size of plastic part, greatly reducing fixture inventory, manufacturing costs, and management complexity, and significantly improving fixture utilization and economy.

[0031] Furthermore, the first clamping component 20 and the second clamping component 30 are respectively disposed in the two end areas of the base plate 10 along the width direction of the base plate 10, so as to cooperate with each other to adaptively clamp the two ends of the plastic part.

[0032] Specifically, the first clamping assembly 20 includes a first side-pushing unit 21 and a plurality of first pressing units 22. The first side-pushing unit 21 and the plurality of first pressing units 22 are disposed in the corresponding end areas of the base plate 10 and are respectively slidably engaged with the corresponding first sliding groove a and second sliding groove b, thereby enabling the first side-pushing unit 21 and the plurality of first pressing units 22 to be adaptively adjusted relative to the base plate 10. More specifically, in one embodiment, the first side-pushing unit 21 is configured as a horizontally mounted thin cylinder with a guide rod to output lateral thrust to the side surface of the plastic part; in another embodiment, each first pressing unit 22 is configured as a vertically mounted standard cylinder, and the top output end of the standard cylinder is connected to an L-shaped pressure rod, so that the first pressing unit can output pressure perpendicular to the base plate 10 to the top side surface of the plastic part, thereby cooperating with the first side-pushing unit 21 and the base plate 10 to perform multi-directional stable clamping of the plastic part.

[0033] Specifically, the second clamping assembly 30 includes a second side-pushing unit 31 and a plurality of second pressing units 32, and the second clamping assembly 30 is mirror-image of the first clamping assembly 20.

[0034] Furthermore, the third clamping assembly 40 and the fourth clamping assembly 50 are respectively disposed on both sides of the base plate 10 along the length direction of the base plate 10, so as to cooperate with each other to adaptively clamp both sides of the plastic part.

[0035] Specifically, the third clamping assembly 40 includes a third side-pushing unit 41 and several third-pressing units 42. The third side-pushing unit 41 and several third-pressing units 42 are disposed in the corresponding side area of ​​the base plate 10 and slide in cooperation with the corresponding first slide groove a and second slide groove b, respectively, so that the third side-pushing unit 41 and several third-pressing units 42 can be adaptively adjusted in position relative to the base plate 10. More specifically, in one embodiment, the third side-pushing unit 41 is configured as a horizontally mounted thin cylinder with a guide rod to output lateral thrust to the side surface of the plastic part; in another embodiment, each third-pressing unit 42 is configured as a vertically mounted standard cylinder, and the top output end of the standard cylinder is connected to an L-shaped pressure rod, so that the third pressing unit can output pressure perpendicular to the base plate 10 to the top side surface of the plastic part, thereby cooperating with the third side-pushing unit 41 and the base plate 10 to perform multi-directional stable clamping of the plastic part.

[0036] Specifically, the fourth clamping assembly 50 includes a plurality of fourth side-pushing units 51 and a plurality of fourth-pressing units 52. The plurality of fourth side-pushing units 51 and the plurality of fourth-pressing units 52 are disposed in the corresponding side areas of the base plate 10 and respectively slide in cooperation with the corresponding first sliding groove a and second sliding groove b, thereby enabling the plurality of fourth side-pushing units 51 and the plurality of fourth-pressing units 52 to be adaptively adjusted in position relative to the base plate 10. More specifically, in one embodiment, each fourth side-pushing unit 51 is configured as a horizontally mounted thin cylinder with a guide rod; in another embodiment, each fourth-pressing unit 52 is configured as a vertically mounted standard cylinder, and the top output end of the standard cylinder is connected to an L-shaped pressure rod.

[0037] Furthermore, the fixture 1 for ultrasonic welding of plastic parts also includes several movable baffles 60, which are respectively movably connected to several first slide grooves a and several second slide grooves b, so that the movable baffles 60 can be adjusted according to the specific settings of the clamping components to cooperate with the corresponding side push unit for opposing limit, thereby enhancing the clamping stability of the fixture.

[0038] Furthermore, the base plate 10 is also provided with a plurality of clearance holes c, which are respectively located at the top corners of the adjacent areas of the first clamping component 20, the second clamping component 30, the third clamping component 40 and the fourth clamping component 50, thereby providing clearance space for the plastic parts without affecting the position adjustment of each clamping component, and also providing a processing window facing the bottom side of the base plate 10.

[0039] In summary, the fixture for ultrasonic welding of plastic parts disclosed in this utility model achieves stepless positioning across the entire plane by setting an interlaced and uniformly sized mesh groove system on the surface of the base plate. All grooves have uniform depth and width, and are interwoven to form a dense mesh node. The four clamping components can slide and be positioned at any mesh node position within the entire base plate plane (covering the X and Y axes), breaking through the positioning limitations of traditional fixtures with fixed holes or single grooves, and providing near-continuous position adjustment capability. Specifically, regarding shape adaptability, the four clamping components can be freely combined into any rectangular, non-rectangular, or even asymmetrical clamping frames within the grid's allowable range, according to the contour of the plastic part. Regarding size adaptability, by adjusting the relative distance between the four clamping components on the grid, it can accommodate various sizes of plastic parts, ranging from the minimum grid spacing to near the maximum size of the base plate, significantly expanding the fixture's versatility. Regarding clamping posture adaptability, the mesh groove allows the clamping components to be positioned arbitrarily in the plane. For plastic parts with non-standard angle placement or special positioning requirements, the clamping components can be precisely adjusted to the optimal force application point, ensuring stable and reliable clamping and optimizing the ultrasonic energy transmission path. Based on the above-mentioned high adaptability, there is no need to customize a special fixture for each specific shape / size of plastic part, greatly reducing fixture inventory, manufacturing costs, and management complexity, and significantly improving fixture utilization and economy.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fixture for ultrasonic welding of plastic parts, characterized in that, include: The base plate, the first clamping assembly, the second clamping assembly, the third clamping assembly, and the fourth clamping assembly are all mounted on the top side surface of the base plate, thereby forming a basic clamping structure on the top side of the base plate. The top side surface of the base plate is provided with a plurality of first sliding grooves and a plurality of second sliding grooves; the plurality of first sliding grooves are arranged parallel to each other along the width direction of the base plate on the top side surface of the base plate; the plurality of second sliding grooves are arranged parallel to each other along the length direction of the base plate on the top side surface of the base plate; each first sliding groove and each second sliding groove are configured as grooves with equal groove depth and groove width, and the plurality of first sliding grooves and the plurality of second sliding grooves are respectively staggered to form a mesh sliding adjustment structure; The first clamping assembly, the second clamping assembly, the third clamping assembly, and the fourth clamping assembly are respectively slidably engaged with a plurality of first slide grooves and a plurality of second slide grooves.

2. The fixture for ultrasonic welding of plastic parts according to claim 1, characterized in that, The first clamping assembly and the second clamping assembly are respectively disposed at both ends of the base plate along the width direction of the base plate.

3. The fixture for ultrasonic welding of plastic parts according to claim 2, characterized in that, The first clamping assembly includes a first side-pushing unit and a plurality of first-pressing units. The first side-pushing unit and the plurality of first-pressing units are disposed in the corresponding end areas of the base plate and slide in cooperation with the corresponding first slide groove and second slide groove, respectively.

4. The fixture for ultrasonic welding of plastic parts according to claim 3, characterized in that, The first side thrust unit is configured as a horizontally mounted, thin cylinder with a guide rod.

5. The fixture for ultrasonic welding of plastic parts according to claim 4, characterized in that, Each first top-pressing unit is configured as a vertically mounted standard cylinder, and the top output end of the standard cylinder is connected to an L-shaped pressure rod.

6. The fixture for ultrasonic welding of plastic parts according to claim 5, characterized in that, The second clamping assembly includes a second side-pushing unit and several second top-pressing units, and the second clamping assembly is mirror-image of the first clamping assembly.

7. The fixture for ultrasonic welding of plastic parts according to claim 6, characterized in that, The third and fourth clamping components are respectively disposed on both sides of the base plate along the length of the base plate.

8. The fixture for ultrasonic welding of plastic parts according to claim 7, characterized in that, The third clamping assembly includes a third side pushing unit and several third pressing units. The third side pushing unit and several third pressing units are disposed in the corresponding side area of ​​the base plate and slide in cooperation with the corresponding first slide groove and second slide groove respectively.

9. The fixture for ultrasonic welding of plastic parts according to claim 8, characterized in that, The fourth clamping assembly includes several fourth side pushing units and several fourth pressing units. The several fourth side pushing units and several fourth pressing units are disposed in the corresponding side areas of the base plate and slide in cooperation with the corresponding first slide groove and second slide groove respectively.

10. The fixture for ultrasonic welding of plastic parts according to claim 9, characterized in that, The fixture for ultrasonic welding of plastic parts also includes several movable baffles, which are respectively movably connected to several first slides and several second slides.

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