Automatic positioning type friction welding die

Abstract

The utility model relates to the technical field of welding dies, in particular to an automatic positioning type friction welding die. Comprising an upper die and a lower die, a soft groove is formed below the upper die and is matched with the upper shell in shape; positioning points are arranged on the upper surface of the lower die and are matched with the back of the bottom shell in shape; the upper mold and the lower mold are matched in vertical position; after the upper mold and the lower mold are subjected to friction welding, a gap between the upper shell and the soft groove is attached along with deformation of the soft groove, the positioning points are matched with the soft groove to complete a positioning structure between the upper shell and the bottom shell in the upper mold and the lower mold, the precision and stability of the welding mold are remarkably improved, accurate alignment in the welding process of the upper shell and the bottom shell is ensured, and the welding quality is improved. And the welding defect caused by inaccurate positioning is avoided, the manual intervention is reduced, the machining efficiency and the product quality are greatly improved, the adaptability and the flexibility are enhanced, and the effect of easily meeting diversified machining requirements can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding dies, in particular to an automatic positioning friction welding die. Background Art

[0002] Conventional technology often struggles to achieve high-precision positioning when welding a vehicle's upper and lower shells using molds. Errors in mold design, manufacturing, or installation, as well as variations in workpiece size and shape, can lead to inaccurate alignment between the mold and the workpiece. This lack of positioning accuracy can cause deviations in the weld joint, impacting weld quality and overall product performance.

[0003] In addition, due to unreasonable mold design, backward manufacturing technology or limited performance of welding equipment, existing molds often have low processing efficiency when welding vehicle upper and lower shells, which not only prolongs the production cycle but also increases production costs. Adjustments through manual intervention may also lead to operational errors and safety hazards, further affecting welding quality and product reliability.

[0004] At the same time, existing molds are often difficult to meet diverse needs. Due to the lack of flexibility and adjustability of mold design, it takes a lot of time and effort to replace workpieces or adjust welding parameters, which not only reduces production efficiency but also limits the scope of application and flexibility of the mold. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic positioning friction welding mold to address the defects in the existing technology, thereby significantly improving the accuracy and stability of the welding mold, ensuring accurate alignment of the upper shell and the bottom shell during welding, avoiding welding defects caused by inaccurate positioning, reducing manual intervention, greatly improving processing efficiency and product quality, enhancing adaptability and flexibility, and being able to easily cope with diverse processing needs.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an automatic positioning friction welding mold, comprising an upper mold and a lower mold; a soft groove is provided at the bottom of the upper mold, and is adapted to the shape of the upper shell; a positioning point is provided on the upper surface of the lower mold, and is adapted to the shape of the back of the bottom shell; the upper and lower positions of the upper mold and the lower mold are adapted to each other; after the upper mold and the lower mold are friction welded, the gap between the upper shell and the soft groove fits with the change of the soft groove shape, and the positioning point cooperates with the soft groove to complete the positioning between the upper shell and the bottom shell in the upper mold and the lower mold.

[0007] Furthermore, the lower mold is provided with a convex curvature, and the convex curvature matches the concave curvature of the flexible groove.

[0008] Furthermore, the flexible groove fixes the upper shell by adsorption through a negative pressure mechanism.

[0009] Furthermore, an upper mold frame is separately provided outside the upper mold, and the upper mold frame covers the upper mold and the negative pressure mechanism from above, and the soft groove is exposed below the upper mold frame.

[0010] Furthermore, the flexible groove is deformed within the upper mold frame.

[0011] Furthermore, the positioning points are provided with rectangular positioning points, cylindrical positioning points and irregular installation points.

[0012] Furthermore, the irregular installation point is opened from the side surface of the lower mold to the upper surface.

[0013] Furthermore, an upper mold fixing plate is provided above the upper mold.

[0014] Furthermore, a lower mold fixing bracket is provided below the lower mold.

[0015] Furthermore, a lower mold fixing plate is provided below the lower mold fixing bracket.

[0016] The invention comprises an upper mold and a lower mold; a soft groove is provided at the bottom of the upper mold and is adapted to the shape of the upper shell; a positioning point is provided on the upper surface of the lower mold and is adapted to the shape of the back of the bottom shell; the upper and lower positions of the upper mold and the lower mold are adapted to each other; after friction welding of the upper mold and the lower mold, the gap between the upper shell and the soft groove fits with the shape of the soft groove, and the positioning point cooperates with the soft groove to complete the positioning structure between the upper shell and the bottom shell in the upper mold and the lower mold, thereby significantly improving the accuracy and stability of the welding mold, ensuring accurate alignment of the upper shell and the bottom shell during welding, avoiding welding defects caused by inaccurate positioning, reducing manual intervention, greatly improving processing efficiency and product quality, enhancing adaptability and flexibility, and being able to easily cope with diverse processing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of the automatic positioning friction welding die of the utility model;

[0019] Figure 2 It is the front view of the automatic positioning type friction welding die of the utility model;

[0020] Figure 3 It is the side view of the automatic positioning type friction welding die of the utility model;

[0021] Figure 4 It is the explosion view of the automatic positioning type friction welding die of the utility model;

[0022] Figure 5 It is the explosion view of the automatic positioning type friction welding die of the utility model from another angle;

[0023] Reference signs:

[0024] Upper die 1, soft groove 1-1, negative pressure mechanism 1-2, upper die frame 1-3, lower die 2, positioning point 2-1, rectangular positioning point 2-2, cylindrical positioning point 2-3, irregular mounting point 2-4, upper shell 3, bottom shell 4, upper die fixing plate 5, lower die fixing support 6, lower die fixing plate 7. Specific implementation

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] In the description of the utility model, it should be explained that the orientation or position relationship of "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicated in the drawings is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] An automatic positioning type friction welding die, as shown in Figure 1 The utility model discloses an automatic positioning type friction welding die, which comprises an upper die 1 and a lower die 2, wherein the upper die 1 is provided with a soft groove 1-1 below and is matched with the shape of an upper shell 3, the upper surface of the lower die 2 is provided with a positioning point 2-1 and is matched with the shape of the back of a bottom shell 4, the upper die 1 and the lower die 2 are matched in position, and the gap between the upper shell 3 and the soft groove 1-1 is matched with the type change of the soft groove 1-1 after the upper die 1 and the lower die 2 are friction welded, and the positioning point 2-1 cooperates with the soft groove 1-1 to complete the positioning between the upper shell 3 and the bottom shell 4 in the upper die 1 and the lower die 2.

[0028] Specifically, by setting a soft groove 1-1 under the upper mold 1 to adapt to the shape of the upper shell 3, and setting a positioning point 2-1 on the upper surface of the lower mold 2 to adapt to the shape of the back of the bottom shell 4, after friction welding, the soft groove 1-1 can undergo a certain deformation as the welding pressure and temperature change, so that it fits tightly with the surface of the upper shell 3, which helps to eliminate gaps in the welding process, improve welding strength and sealing, ensure the precise alignment of the upper shell 3 and the bottom shell 4 during the friction welding process, reduce welding errors, improve the overall quality and consistency of the product, and realize high-precision positioning function. At the same time, due to the existence of the positioning point 2-1, the mold can still maintain good positioning accuracy after multiple uses, extending the service life of the mold, and reducing the scrap rate and rework rate by improving welding accuracy and efficiency, thereby reducing production costs.

[0029] As a preferred embodiment of the above, Figure 1 As shown, the lower mold 2 is provided with a convex curvature, and the convex curvature matches the concave curvature of the soft groove 1-1.

[0030] Specifically, by coordinating the raised curvature of the lower mold 2 with the recessed curvature of the soft groove 1-1 of the upper mold 1, a more stable positioning mechanism is formed, which can effectively prevent the displacement or misalignment between the upper shell 3 and the bottom shell 4 during the friction welding process, thereby ensuring the accuracy and consistency of the welding. The coordination of the raised curvature and the recessed curvature enables the upper mold 1 and the lower mold 2 to form a tighter contact surface when closed. This close contact helps to reduce the gap during the welding process, improve the welding quality and sealing, and at the same time, since the contact surface is more uniform, the heat conduction and stress distribution during welding will also be more reasonable, thereby reducing the risk of welding deformation and cracks. The raised curvature and the recessed curvature also help to disperse the stress and impact force during the welding process, reduce wear and damage to the mold, and enable the mold to maintain a better shape and precision during long-term use, thereby extending the service life of the mold.

[0031] As a preferred embodiment of the above, Figure 4 As shown, the soft groove 1-1 fixes the upper shell 3 by adsorption through the negative pressure mechanism 1-2.

[0032] Specifically, the negative pressure effect generated by the negative pressure mechanism 1-2 securely holds the upper shell 3 within the flexible groove 1-1. This adsorption and fixation method not only ensures the positional stability of the upper shell 3 during welding but also significantly improves positioning accuracy. Compared to traditional mechanical clamping or compression methods, negative pressure adsorption is gentler and more uniform, avoiding unnecessary damage or deformation to the upper shell 3. Because the negative pressure mechanism 1-2 ensures a tight fit between the upper shell 3 and the flexible groove 1-1, gaps at the welding interface are minimized during friction welding. It helps to improve welding quality and consistency, makes welds more uniform and firm, and reduces the occurrence of welding defects. The introduction of the negative pressure mechanism 1-2 simplifies the fixing process of the upper shell 3. The operator only needs to place the upper shell 3 in the soft groove 1-1 and start the negative pressure mechanism to achieve rapid fixing, which not only saves time, but also reduces the difficulty and complexity of operation, thereby improving the overall production efficiency. The combined design of the negative pressure mechanism 1-2 and the soft groove 1-1 enables the mold to adapt to upper shells 3 of different shapes and sizes. Due to the uniformity and adjustability of negative pressure adsorption, the mold can easily cope with upper shells of various complex shapes, thereby improving the versatility and flexibility of the mold.

[0033] As a preferred embodiment of the above, Figure 5 As shown, an upper mold frame 1-3 is separately provided outside the upper mold 1, and the upper mold frame 1-3 covers the upper mold 1 and the negative pressure mechanism 1-2 from above, and the soft groove 1-1 is exposed below the upper mold frame 1-3.

[0034] Specifically, the upper mold frame 1-3 provides a stable support structure for the upper mold 1 and the negative pressure mechanism 1-2. The upper mold frame 1-3 effectively disperses the significant pressure and vibrations that the mold and mechanism must withstand during the friction welding process, improving overall structural stability, reducing deformation and damage to the mold and mechanism, and extending their service life. The upper mold frame 1-3 encloses the negative pressure mechanism 1-2, effectively preventing external impurities and contaminants from entering the mechanism, thereby maintaining its cleanliness and normal operation. Furthermore, the frame provides a certain degree of cushioning, reducing impact and damage to the negative pressure mechanism during operation. The upper mold frame 1-3 allows the upper mold 1 and negative pressure mechanism 1-2 to be installed and removed as a single unit, simplifying the mold replacement and maintenance process and reducing operational difficulty and complexity. Furthermore, the presence of the frame makes the mold more convenient and safer during transportation and storage.

[0035] As a preferred embodiment of the above, Figure 4 As shown, the soft groove 1-1 is deformed in the upper mold frame 1-3.

[0036] Specifically, by selecting a material with a certain degree of elasticity and resilience, such as polyurethane, to fabricate the flexible groove 1-1, these materials are able to change shape when subjected to external forces and quickly return to their original shape after the external force disappears. When subjected to pressure from the upper shell 3, the flexible groove 1-1 can deform appropriately, thereby closely conforming to the shape of the upper shell 3. Furthermore, the flexible groove 1-1 remains stable after deformation and will not fall off or be damaged by external forces. This significantly improves the positioning accuracy of the upper shell 3 during welding, reduces welding defects, and enhances product quality and consistency.

[0037] As a preferred embodiment of the above, Figure 5 As shown, the positioning point 2-1 is provided with a rectangular positioning point 2-2, a cylindrical positioning point 2-3 and an irregular installation point 2-4.

[0038] As a preferred embodiment of the above, Figure 5 As shown, the irregular installation points 2-4 are opened from the side surface of the lower mold 2 to the upper surface.

[0039] Specifically, the irregular mounting points 2-4 can be customized according to actual needs and can be used to connect parts with complex shapes or irregular sizes, thereby ensuring the integrity and functionality of the entire mold. In addition, the irregular mounting points can also provide additional support and fixation to enhance the stability and durability of the mold.

[0040] As a preferred embodiment of the above, Figure 1 As shown, an upper mold fixing plate 5 is provided above the upper mold 1 .

[0041] Specifically, the upper mold fixing plate 5 mainly fixes the upper mold 1 to ensure that it does not move or shake during the working process.

[0042] As a preferred embodiment of the above, Figure 1 As shown, a lower mold fixing bracket 6 is provided below the lower mold 2 .

[0043] As a preferred embodiment of the above, Figure 1 As shown, a lower mold fixing plate 7 is provided below the lower mold fixing bracket 6 .

[0044] Specifically, the lower mold fixing bracket 6 and the lower mold fixing plate 7 together form the key support and fixing structure of the mold system. Their synergistic effect ensures the stability and accuracy of the lower mold during operation. The lower mold fixing bracket 6 is adjustable to accommodate lower molds of varying sizes and shapes. This can be achieved by adjusting the bracket's height, angle, or position, ensuring accurate alignment of the lower mold and its coordinated operation with the upper mold.

[0045] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic positioning friction welding die, characterized in that: It includes an upper mold (1) and a lower mold (2); A soft groove (1-1) is provided below the upper mold (1) and is adapted to the shape of the upper shell (3); A positioning point (2-1) is provided on the upper surface of the lower mold (2) and is adapted to the shape of the back of the bottom shell (4); The upper mold (1) and the lower mold (2) are adapted to each other in upper and lower positions; After the upper mold (1) and the lower mold (2) are friction-welded, the gap between the upper shell (3) and the soft groove (1-1) is adapted to the shape of the soft groove (1-1), and the positioning point (2-1) cooperates with the soft groove (1-1) to complete the positioning between the upper shell (3) and the bottom shell (4) in the upper mold (1) and the lower mold (2).

2. The automatic positioning friction welding mold according to claim 1, characterized in that: The lower mold (2) is provided with a convex curvature, and the convex curvature matches the concave curvature of the soft groove (1-1).

3. The automatic positioning friction welding mold according to claim 1, characterized in that: The soft groove (1-1) absorbs and fixes the upper shell (3) through a negative pressure mechanism (1-2).

4. The automatic positioning friction welding die according to claim 3, characterized in that: An upper mold frame (1-3) is separately provided outside the upper mold (1), and the upper mold frame (1-3) covers the upper mold (1) and the negative pressure mechanism (1-2) from above, and the soft groove (1-1) is exposed below the upper mold frame (1-3).

5. The automatic positioning friction welding die according to claim 4, characterized in that: The soft groove (1-1) is deformed in the upper mold frame (1-3).

6. The automatic positioning friction welding mold according to claim 1, characterized in that: The positioning points (2-1) are provided with rectangular positioning points (2-2), cylindrical positioning points (2-3) and irregular installation points (2-4).

7. The automatic positioning friction welding die according to claim 6, characterized in that: The irregular mounting points (2-4) are opened from the side surface of the lower mold (2) to the upper surface.

8. The automatic positioning friction welding die according to claim 1, characterized in that: An upper mold fixing plate (5) is provided above the upper mold (1).

9. The automatic positioning friction welding die according to claim 1, characterized in that: A lower mold fixing bracket (6) is provided below the lower mold (2).

10. The automatic positioning friction welding die according to claim 9, characterized in that: A lower mold fixing plate (7) is provided below the lower mold fixing bracket (6).

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