An auxiliary jig for ultrasonic welding
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN DIMEI ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, it is difficult to perform ultrasonic welding on square insulating covers made of PP or PE thermoplastic materials from the inside. There is a lack of effective positioning and clamping methods, which leads to high operational difficulty, unstable product quality, and affects production efficiency and product quality.
Design an auxiliary fixture for ultrasonic welding, including a fixture body and four blocking walls. The fixture body is made of fiber material or aluminum material, and the blocking walls are used to hold the four sides of the workpiece in place. They are fixed by mortise and tenon structure and adhesive layer to ensure that the workpiece is kept in a folded state before welding.
It enables the workpiece to remain stably folded during the welding process, simplifies the operation process, improves the product size qualification rate and quality stability, and enhances production efficiency. Moreover, the material is lightweight, low-cost, and does not interfere with the welding process.
Smart Images
Figure CN224528061U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding technology, and in particular to an auxiliary fixture for ultrasonic welding. Background Technology
[0002] In the field of electrical equipment insulation protection, insulating covers, as an important protective component, are widely used in low-voltage electrical systems to achieve insulation isolation of live parts or electrical connections, thereby ensuring the safe and stable operation of electrical equipment. Considering factors such as insulation performance, ease of processing, and cost control, thermoplastic materials such as PP (polypropylene) and PE (polyethylene) have become ideal choices for manufacturing such insulating covers due to their excellent insulation performance, good processing flexibility, and relatively low material cost. These materials not only meet the insulation isolation requirements in low-voltage, conventional environments, but also are easy to mold into complex shapes during processing, making them well-suited to the protection requirements of electrical equipment of different specifications.
[0003] In the manufacturing process of square insulating covers, their structure is usually formed by bending the sheet metal. Specifically, the four sides of the sheet metal are bent at 90 degrees to create an overlap between adjacent sides. The overlap is then connected using a connection and fixing process to ensure the structural stability of the insulating cover. Currently, ultrasonic welding, as an efficient and reliable connection method, is widely used in the fixing process of this overlap.
[0004] In existing technologies, ultrasonic welding of overlapping portions of square insulating covers is often performed from the outside of the cover. However, in actual production, due to specific structural design or process optimization requirements, it is sometimes necessary to perform ultrasonic welding on the overlapping portions from the inside of the insulating cover. But when welding from the inside, due to the lack of effective positioning and clamping methods, it is difficult to keep the insulating cover stably in the preset folded state. This not only significantly increases the difficulty of the ultrasonic welding process, making the welding procedure more complicated and affecting production efficiency, but more importantly, during the welding process, problems such as incomplete folding of the insulating cover, misalignment of overlapping portions, or loose fit can easily lead to the final welded product failing to meet the preset dimensional requirements, seriously affecting the product's quality stability and consistency, and thus potentially failing to meet subsequent assembly and usage requirements.
[0005] Therefore, how to solve the positioning and retention problem when ultrasonically welding PP and PE thermoplastic square insulating covers from the inside has become an urgent technical problem to be solved in the current production and manufacturing process of this type of product. Utility Model Content
[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.
[0007] An auxiliary fixture for ultrasonic welding is used to constrain the outer side of a workpiece with a square structure. The fixture includes a fixture body, which includes a fixture base plate and four blocking walls fixed on the fixture base plate. The fixture base plate is made of fiber material, and the blocking walls are made of fiber material or aluminum material. The four blocking walls are used to hold the four sides of the workpiece, and there is a gap between the four blocking walls.
[0008] Preferably, a window is provided in the middle of the fixture base plate, so that the fixture base plate is formed into a square frame structure, and the fixture base plate has an abutment area between the blocking wall and the window to hold the workpiece.
[0009] Preferably, the dimensions between the four blocking walls are set to an interference fit with the workpiece.
[0010] Preferably, the barrier wall is made of fiber material, and both the fixture base plate and the barrier wall have an inner fiber layer and an outer smooth layer.
[0011] Preferably, the smooth layer is made of resin material.
[0012] Preferably, a tenon and mortise structure is provided between the jig base plate and the blocking wall, and the jig base plate and the blocking wall are fixedly connected by the tenon and mortise structure.
[0013] Preferably, an adhesive layer is provided between the jig base plate and the barrier wall, and the jig base plate and the barrier wall are bonded and fixed together by the adhesive layer.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] By precisely holding the four sides of the workpiece in place with four blocking walls, the problem of maintaining a folded state during ultrasonic welding of the inner side of a square workpiece is completely solved. No additional manual fixing is required, simplifying the welding process. The stable constraint ensures that the workpiece is folded completely and the overlapping parts fit precisely, effectively avoiding dimensional deviations in the welded product caused by incomplete folding, and significantly improving the product dimensional pass rate and quality stability. In addition, the fixture is made of fiber or aluminum materials, which are not only lightweight and low in processing cost, but also suitable for ultrasonic welding conditions and will not interfere with the welding process. At the same time, the simple structural design makes it highly applicable and can be quickly applied to production, significantly improving the production efficiency of the welding process.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a structural schematic diagram of the workpiece and fixture in their assembled state according to this utility model;
[0019] Figure 2 This is a structural schematic diagram of the workpiece and fixture body in their disassembled state according to this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of this utility model;
[0021] Figure 4 This is a utility model Figure 3 Schematic diagram of the structure at point A;
[0022] Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention;
[0023] Figure 6 This is a utility model Figure 5 Schematic diagram of the structure at point B;
[0024] Figure 7 This is a structural schematic diagram of Embodiment 3 of the present invention;
[0025] Figure 8 This is a utility model Figure 7 A schematic diagram of the structure at point C.
[0026] The reference numerals and names in the figure are as follows:
[0027] Workpiece 10, fixture base plate 20, window 21, barrier wall 30, fiber layer 40, smooth layer 50, tenon and mortise structure 60. Detailed Implementation
[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] Please see Figure 1-8In this embodiment of the present invention, an auxiliary fixture for ultrasonic welding is used to constrain the outer side of a workpiece 10 with a square structure. The fixture body includes a fixture base plate 20 and four blocking walls 30 fixed on the fixture base plate 20. The fixture base plate 20 is made of fiber material, and the blocking walls 30 are made of fiber material or aluminum material. The four blocking walls 30 are used to abut against the four sides of the workpiece 10, and there is a gap between the four blocking walls 30.
[0030] In the above technical solution, the fixture base plate 20 of the fixture body is made of fiber material, providing a stable bearing foundation for the square workpiece 10; the four blocking walls 30 fixed on the base plate correspond to the four sides of the square workpiece 10 respectively, and achieve rigid constraint by abutting against the four sides of the workpiece 10, ensuring that the workpiece 10 maintains its predetermined folded shape before welding, and that the overlapping parts of adjacent sides fit tightly; at the same time, the reserved interval between the four blocking walls 30 not only avoids the mutual obstruction of the blocking walls 30 themselves, but also can adapt to the possible small dimensional deviations or deformation requirements of the workpiece 10, preventing excessive constraint from causing deformation of the workpiece 10; in addition, the fiber material base plate and the fiber material or aluminum material blocking walls 30 have material properties that are suitable for the ultrasonic welding environment and will not interfere with the welding energy transmission, providing a stable structural guarantee for ultrasonic welding from the inside of the workpiece 10.
[0031] Therefore, by precisely holding the four sides of the workpiece 10 against the four blocking walls 30, the problem of maintaining the folded state during ultrasonic welding of the inner side of the square workpiece 10 is completely solved, eliminating the need for additional manual fixing and simplifying the welding operation process. Moreover, the stable constraint state ensures that the workpiece 10 is folded completely and the overlapping parts fit precisely, effectively avoiding dimensional deviations in the welded products caused by incomplete folding, and significantly improving the product dimensional qualification rate and quality stability. In addition, the fixture is made of fiber or aluminum materials, which are not only lightweight and have low processing costs, but are also suitable for ultrasonic welding conditions and will not interfere with the welding process. At the same time, the simple structural design makes it highly applicable and can be quickly applied to production, significantly improving the production efficiency of the welding process.
[0032] Based on the above technical solution, the following further specific embodiments with further limitations are proposed:
[0033]
Example 1
[0034] like Figure 3-4As shown, in terms of structural design, a window 21 is provided in the middle of the fixture base plate 20, making the fixture base plate 20 a square frame structure. The fixture base plate 20 has an abutment area between the blocking wall 30 and the window 21 to hold the workpiece 10. This ensures that the abutment area effectively holds the workpiece 10 while reducing the overall weight of the fixture, and also provides more reasonable space for welding operations, avoiding interference of the fixture with the welding path. The dimensions between the four blocking walls 30 are set to be interference fit with the workpiece 10, further enhancing the constraint on the folded state of the workpiece 10, ensuring that the workpiece 10 always maintains the preset shape during welding, and greatly reducing the risk of dimensional deviation caused by the displacement of the workpiece 10.
[0035] In terms of material selection, the barrier wall 30 is made of fiber material, and both the fixture base plate 20 and the barrier wall 30 have an inner fiber layer 40 and an outer smooth layer 50; the smooth layer 50 is made of resin material; the inner fiber layer 40 ensures the structural strength and stability of the fixture, while the outer smooth layer 50 reduces the friction between the fixture and the workpiece 10, which facilitates the placement and removal of the workpiece 10 and avoids scratching the surface of the workpiece 10. At the same time, the properties of the resin material can better adapt to the ultrasonic welding environment.
[0036] In terms of connection method, a tenon and mortise structure 60 is provided between the fixture base plate 20 and the blocking wall 30, and the fixture base plate 20 and the blocking wall 30 are fixedly connected by the tenon and mortise structure 60; an adhesive layer is provided between the fixture base plate 20 and the blocking wall 30, and the fixture base plate 20 and the blocking wall 30 are bonded and fixed by the adhesive layer; the double fixing method of tenon and mortise structure 60 and adhesive layer between the fixture base plate 20 and the blocking wall 30 not only ensures the firmness and stability of the connection between the two, reduces the probability of loosening during long-term use of the fixture, and extends the service life of the fixture, but also ensures the installation accuracy of the blocking wall 30 by the precise positioning of the tenon and mortise structure 60, further improving the constraint effect on the workpiece 10, thereby improving the overall efficiency of ultrasonic welding and the stability of product quality.
[0037]
Example 2
[0038] like Figure 5-6As shown, in terms of structural design, a window 21 is provided in the middle of the fixture base plate 20, making the fixture base plate 20 a square frame structure. The fixture base plate 20 has an abutment area between the blocking wall 30 and the window 21 to hold the workpiece 10. This ensures that the abutment area effectively holds the workpiece 10 while reducing the overall weight of the fixture, and also provides more reasonable space for welding operations, avoiding interference of the fixture with the welding path. The dimensions between the four blocking walls 30 are set to be interference fit with the workpiece 10, further enhancing the constraint on the folded state of the workpiece 10, ensuring that the workpiece 10 always maintains the preset shape during welding, and greatly reducing the risk of dimensional deviation caused by the displacement of the workpiece 10.
[0039] In terms of material selection, the barrier wall 30 is made of aluminum, which not only has sufficient structural strength to ensure the restraint effect, but is also lightweight and has good heat dissipation, which can prevent excessive heat accumulation during the welding process from causing adverse effects on the fixture or workpiece 10.
[0040] In terms of connection method, a tenon and mortise structure 60 is provided between the jig base plate 20 and the blocking wall 30, and the jig base plate 20 and the blocking wall 30 are fixedly connected by the tenon and mortise structure 60; an adhesive layer is provided between the jig base plate 20 and the blocking wall 30, and the jig base plate 20 and the blocking wall 30 are bonded and fixed by the adhesive layer; the jig base plate 20 and the blocking wall 30 are fixedly connected by the tenon and mortise structure 60 and the adhesive layer. The tenon and mortise structure 60 can achieve precise positioning and initial fixation of the two, ensuring the accuracy of the installation position of the blocking wall 30, while the adhesive layer further enhances the firmness of the connection, effectively reducing the probability of loosening during long-term use and extending the service life of the jig.
[0041]
Example 3
[0042] like Figure 7-8 As shown, in terms of structural design, a window 21 is provided in the middle of the fixture base plate 20, making the fixture base plate 20 a square frame structure. The fixture base plate 20 has an abutment area between the blocking wall 30 and the window 21 to hold the workpiece 10. This ensures that the abutment area effectively holds the workpiece 10 while reducing the overall weight of the fixture, and also provides more reasonable space for welding operations, avoiding interference of the fixture with the welding path. The dimensions between the four blocking walls 30 are set to be interference fit with the workpiece 10, further enhancing the constraint on the folded state of the workpiece 10, ensuring that the workpiece 10 always maintains the preset shape during welding, and greatly reducing the risk of dimensional deviation caused by the displacement of the workpiece 10.
[0043] In terms of material selection, the barrier wall 30 is made of fiber material, and both the fixture base plate 20 and the barrier wall 30 have an inner fiber layer 40 and an outer smooth layer 50; the smooth layer 50 is made of resin material; the inner fiber layer 40 ensures the structural strength and stability of the fixture, while the outer smooth layer 50 reduces the friction between the fixture and the workpiece 10, which facilitates the placement and removal of the workpiece 10 and avoids scratching the surface of the workpiece 10. At the same time, the properties of the resin material can better adapt to the ultrasonic welding environment.
[0044] In terms of connection method, an adhesive layer is provided between the jig base plate 20 and the blocking wall 30. The jig base plate 20 and the blocking wall 30 are bonded and fixed together by the adhesive layer, which is simple to manufacture and can ensure the connection is firm.
[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. An auxiliary fixture for ultrasonic welding, used to constrain the outer side of a workpiece (10) with a rectangular structure, characterized in that, The fixture includes a fixture body, which includes a fixture base plate (20) and four blocking walls (30) fixed on the fixture base plate (20). The fixture base plate (20) is made of fiber material, and the blocking walls (30) are made of fiber material or aluminum material. The four blocking walls (30) are used to hold the four sides of the workpiece (10), and there is a gap between the four blocking walls (30).
2. The auxiliary fixture for ultrasonic welding according to claim 1, characterized in that, A window (21) is provided in the middle of the jig base plate (20), so that the jig base plate (20) is formed into a square frame structure. The jig base plate (20) has an abutment area between the blocking wall (30) and the window (21) to hold the workpiece (10).
3. The auxiliary fixture for ultrasonic welding according to claim 1, characterized in that, The dimensions between the four blocking walls (30) are set to be the dimensions that are interference fit with the workpiece (10).
4. The auxiliary fixture for ultrasonic welding according to claim 1, characterized in that, The barrier wall (30) is made of fiber material, and both the fixture base plate (20) and the barrier wall (30) have an inner fiber layer (40) and an outer smooth layer (50).
5. An auxiliary fixture for ultrasonic welding according to claim 4, characterized in that, The smooth layer (50) is made of resin material.
6. The auxiliary fixture for ultrasonic welding according to claim 1, characterized in that, A tenon and mortise structure (60) is provided between the jig base plate (20) and the blocking wall (30), and the jig base plate (20) and the blocking wall (30) are fixedly connected by the tenon and mortise structure (60).
7. An auxiliary fixture for ultrasonic welding according to claim 6, characterized in that, An adhesive layer is provided between the jig base plate (20) and the barrier wall (30), and the jig base plate (20) and the barrier wall (30) are bonded and fixed together by the adhesive layer.