A multi-point positioning fast clamp

Abstract

The application relates to the technical field of tool fixtures, in particular to a multi-point positioning quick fixture which comprises a base, an adjustable supporting structure and an adjustable clamping structure arranged on the base; the adjustable supporting structure comprises an end supporting assembly and a middle supporting assembly; the end supporting assembly comprises an adjustable end supporting plate and an end supporting block arranged on the adjustable end supporting plate, and the end supporting block is provided with an end supporting end; the middle supporting assembly comprises an adjustable middle supporting plate arranged on the base and a middle supporting block arranged on the adjustable middle supporting plate, and the middle supporting block is provided with a middle supporting end; the adjustable clamping structure comprises a clamping swing arm and a plurality of adjustable clamping blocks, and the adjustable clamping blocks are directed towards the end supporting end. On one hand, the end supporting block and the middle supporting block are used to fix the frame in a multi-point supporting mode; on the other hand, the end supporting end is used to clamp the frame in cooperation with the adjustable clamping blocks and the middle supporting end, so that the frame can be protected and the product quality is improved.

Description

Technical Field

[0001] This application relates to the field of tooling and fixture technology, and in particular to a multi-point positioning quick clamp. Background Technology

[0002] A conventional car sunroof is assembled by splicing multiple frames and covering them with glass. After the frames are stamped, parts such as nuts need to be spot-welded onto their surface to facilitate subsequent splicing and assembly processes. However, during the stamping process, several uneven grooves or cavities are formed on the surface of the frames. Conventional fixtures use a large-plane covering clamping method for positioning and fixing. After fixing, these grooves or cavities are easily dented or even damaged during spot welding. The yield rate after spot welding is low, which affects product quality and increases manufacturing costs. Utility Model Content

[0003] The purpose of this application is to provide a multi-point positioning quick clamp, which aims to improve the problem of related technical clamps that are prone to causing dents or damage on the workpiece surface, increase the accuracy and adaptability of the clamp, and ensure product quality.

[0004] This application provides a multi-point positioning quick clamp, including a base, an adjustable support structure and an adjustable clamping structure disposed on the base; the adjustable support structure includes an end support assembly and a middle support assembly; the end support assembly includes an adjustable end support plate and an end support block disposed on the end support plate, the end support block having an end support end; the middle support assembly includes an adjustable middle support plate disposed on the base and a middle support block disposed on the adjustable middle support plate, the middle support block having a middle support end; the shapes of the end support end and the middle support end are adapted to the shape of the frame; the adjustable clamping structure includes a clamping swing arm hinged to the adjustable end support plate and a plurality of adjustable clamping blocks disposed on the clamping swing arm, the adjustable clamping blocks facing the end support end.

[0005] Furthermore, the end support assembly also includes a plurality of clamping positioning posts and through positioning posts disposed on the adjustable end support plate; a positioning space for accommodating the frame is formed between the plurality of clamping positioning posts; and the plurality of through positioning posts are disposed through the frame to position and fix the frame.

[0006] Furthermore, the clamping and positioning pins are paired to form several positioning spaces, and the ends of the two clamping and positioning pins are far apart to form an opening.

[0007] Furthermore, the through-mount positioning post is detachably connected to the adjustable end support plate.

[0008] Furthermore, several of the adjustable clamping blocks are also oriented toward the through-positioning post, and the adjustable clamping blocks oriented toward the through-positioning post are provided with relief grooves for cooperating with the through-positioning post.

[0009] Furthermore, it also includes a side clamping structure, which includes a side clamping arm disposed on the base, a side clamping block disposed on the side clamping arm, and a side clamping drive for driving the side clamping arm; the side clamping arm faces the end support assembly, and a side clamping space is formed between the side clamping arm and the end support assembly.

[0010] Furthermore, the end support assembly also includes an end-side support block disposed on the adjustable end support plate, with the side clamping block facing the end-side support block.

[0011] The beneficial effects of this application are: 1. This application discloses a multi-point positioning quick clamp with an adjustable support structure, which includes end support components and a middle support component. The frame is supported by adjustable end support plates, end support blocks, adjustable middle support plates, and middle support blocks. On one hand, the positions of the end support blocks and middle support blocks can be adjusted using the adjustable end support plates and the adjustable middle support plates, allowing them to adapt to frames of different shapes and fix the frame using a multi-point support method. On the other hand, the end support blocks and middle support blocks have end support ends and middle support ends adapted to the frame. By using the end support ends in conjunction with the adjustable clamping blocks and the middle support ends, the use of a planar covering method for clamping the frame can be avoided, thereby protecting the frame during clamping and spot welding, reducing dent damage, and ensuring product quality.

[0012] 2. A multi-point positioning quick clamp of this application, by setting clamping positioning posts and through positioning posts, the clamping positioning posts and through positioning posts can form a combined positioning structure, and the positions of the clamping positioning posts and through positioning posts can be adjusted by adjustable end support plates. Under the premise of ensuring clamping stability, the stress area of ​​the frame is limited to the position with high structural strength, so that the cavities or grooves on the surface of the frame remain stable during processing, and the thermal stress generated during spot welding will not be superimposed with the clamping stress, thereby further ensuring product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a multi-point positioning quick clamp provided in an embodiment of this application; Figure 2 yes Figure 1 A magnified view of part A in the middle; Figure 3 This is another structural schematic diagram of a multi-point positioning quick clamp provided in an embodiment of this application; Figure 4 yes Figure 3 A magnified view of part B in the middle section; Figure 5 yes Figure 3 A magnified view of part C in the diagram.

[0014] Explanation of reference numerals in the attached figures: 1. Base; 11. Support base; 2. Adjustable support structure; 21. End support assembly; 211. Adjustable end support plate; 212. End support block; 2121. End support end; 213. Clamping positioning post; 214. Through positioning post; 22. Middle support assembly; 221. Adjustable middle support plate; 222. Middle support block; 2221. Middle support end; 3. Adjustable clamping structure; 31. Clamping swing arm; 32. Adjustable clamping block; 4. Side clamping structure; 41. Side clamping arm; 42. Side clamping block. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0016] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0018] In related technologies, automotive sunroof frames require spot welding after stamping. Due to the grooved structure on the frame surface, conventional clamping methods using a planar covering clamping method easily lead to stress concentration in the clamping area. Furthermore, the frame is heated during spot welding; if the clamping force generated by the planar clamping is superimposed on the heat-induced deformation, it can easily cause dents or even damage to the frame surface. This directly affects the product quality and assembly accuracy of the frame, increasing the defect rate and requiring secondary repairs, thus increasing costs.

[0019] Reference Figure 1 , Figure 2 as well as Figure 3Therefore, this application proposes a multi-point positioning quick clamp, which includes a base 1, an adjustable support structure 2 and an adjustable clamping structure 3 disposed on the base 1. The base 1 is used to support the various structures, the adjustable support structure 2 is used to adapt and support the frame, and the adjustable clamping structure 3 is used to cooperate with the adjustable support structure 2 to clamp and fix the frame, thereby facilitating subsequent spot welding.

[0020] The adjustable support structure 2 includes end support components 21 and middle support components 22. The end support components 21 are located at the four corners of the base 1 to support the corners of the frame, while the middle support components 22 are located in the middle of the base 1 to support the middle of the frame.

[0021] The end support assembly 21 includes an adjustable end support plate 211 and an end support block 212 disposed on the end support plate. The end support block 212 has an end support end 2121. To accommodate the installation of the adjustable end support plate 211 and the adjustable middle support plate 221, a plurality of support seats 11 are provided on the base 1. The support seats 11 are installed on the base 1 via threaded connections to achieve position adjustment. The adjustable end support plate 211 is installed on the support seat 11 via threaded connections, and its height in the support seat 11 can be adjusted via threaded connections. The end support block 212 is installed on the adjustable end support plate 211 via threaded connections. The end support end 2121 refers to a contact block with a contoured curved surface at the top of the end support block 212. Specifically, it can be CNC machined, and the contour of its contoured curved surface matches the outer contour of the frame. That is, the shape of the end support end 2121 is adapted to the shape of the frame, so that the end support end 2121 can be embedded into the cavity or groove of the frame.

[0022] Similarly, the central support assembly 22 includes an adjustable central support plate 221 disposed on the base 1 and a central support block 222 disposed on the adjustable central support plate 221, the central support block 222 having a central support end 2221. The adjustable central support plate 221 is installed on the support base 11 by means of a threaded connection to achieve its height adjustment. The structure of the central support block 222 is similar to that of the end support block 212, the central support end 2221 faces the frame, and the shape of the central support end 2221 is adapted to the shape of the frame so that it can be embedded in the cavity or groove of the frame.

[0023] The adjustable clamping structure 3 includes a clamping swing arm 31 hinged to an adjustable end support plate 211, a plurality of adjustable clamping blocks 32 disposed on the clamping swing arm 31, and a swing arm drive for driving the clamping swing arm 31. The adjustable clamping blocks 32 face the end support end 2121, and the swing arm drive is a cylinder or a hydraulic cylinder. The adjustable clamping blocks 32 are installed on the clamping swing arm 31 by means of threaded connection to realize position adjustment. The adjustable clamping blocks 32 are installed at corresponding positions on the clamping swing arm 31 by means of threaded connection to cooperate with the end support end 2121.

[0024] When the frame is placed on the adjustable support structure 2, the end support blocks 212 and the middle support blocks 222 at the corresponding positions fit against the frame contour through their corresponding support ends. The clamping swing arms 31 press down to clamp the frame, causing the adjustable clamping blocks 32 to be distributed along the edge of the frame. The adjustable clamping blocks 32 cooperate with the corresponding support ends to clamp the frame and form a vertical constraint. On the one hand, multiple support ends provide multi-point support for the frame, which can reduce the load on each stress point of the frame, thereby avoiding deformation of the frame due to superimposed loads during spot welding. On the other hand, the cooperation between the support ends and the adjustable clamping blocks 32 avoids clamping the frame through a large-area covering clamping method, thereby reducing frame deformation and improving product quality.

[0025] Reference Figure 3 as well as Figure 4 To further improve the positioning and fixing effect of the frame, the end support assembly 21 also includes a plurality of clamping positioning posts 213 and through positioning posts 214 disposed on the adjustable end support plate 211; a positioning space for accommodating the frame is formed between the plurality of clamping positioning posts 213; and the plurality of through positioning posts 214 are disposed through the frame to position and fix the frame.

[0026] The clamping positioning post 213 refers to a columnar positioning element that is vertically installed on the adjustable end support plate 211. Specifically, the clamping positioning post 213 can be installed on the adjustable end support plate 211 by means of a threaded connection. In this embodiment, several clamping positioning posts 213 are paired to form several positioning spaces, that is, every two clamping positioning posts 213 are paired to form a positioning space, and the ends of the two clamping positioning posts 213 are far apart from each other to form an opening.

[0027] With this design, the ends of the two clamping positioning posts 213 are inclined outward to form a gradually expanding opening. This opening provides a guiding function, allowing the frame to automatically center itself even with some deviation during placement. This reduces the difficulty of frame positioning and the risk of surface damage. Simultaneously, the guiding function provided by this opening structure enables the frame to quickly and accurately enter the positioning space, improving assembly efficiency. It is understood that the distance between adjacent clamping positioning posts 213 can be adjusted as needed to create positioning spaces of different sizes; or the material of the clamping positioning posts 213 can be adjusted as needed, meaning they can be made of materials such as rubber, plastic, or alloy, depending on the process requirements.

[0028] The through-positioning post 214 is a columnar limiting element used to penetrate the through hole of the frame. Its top is set at an acute angle for guidance. When the frame is inserted, the through-positioning post 214 limits the frame by penetrating the through hole. In this embodiment, the through-positioning post 214 and the adjustable end support plate 211 are detachably connected by a threaded connection. Alternatively, the through-positioning post 214 can be detached via a pin connection. When the frame size or positioning requirements change, the operator can easily install or remove the through-positioning post 214 by disassembling and installing it, or replace it with a positioning post of different length or shape, or adjust its installation position to ensure that the through-positioning post 214 matches the frame hole position. This allows for adaptation to different process requirements without replacing the support plate.

[0029] When positioning, the through-positioning post 214 will pass through the frame. In some process requirements, the adjustable clamping blocks 32 need to be pressed against the area of ​​the through-positioning post 214. That is, some of the adjustable clamping blocks 32 will also face the through-positioning post 214. To avoid interference with the through-positioning post 214, the adjustable clamping blocks 32 facing the through-positioning post 214 are provided with relief grooves for cooperating with the through-positioning post 214. The relief grooves extend along the height of the adjustable clamping blocks 32, and their shape matches the outer contour of the through-positioning post 214. When the clamping arm 31 drives the adjustable clamping blocks 32 to move towards the frame for clamping, the relief grooves effectively prevent structural interference between the adjustable clamping blocks 32 and the through-positioning post 214, ensuring clamping reliability.

[0030] Reference Figure 3 as well as Figure 5In addition, some models of the frame also have side features such as folded edges or connecting blocks. In order to position and fix these side features, the multi-point positioning quick clamp also includes a side clamping structure 4. The side clamping structure 4 includes a side clamping arm 41 disposed on the base 1, a side clamping block 42 disposed on the side clamping arm 41, and a side clamping drive for driving the side clamping arm 41. The side clamping arm 41 faces the end support assembly 21, and a side clamping space is formed between the side clamping arm 41 and the end support assembly 21.

[0031] In this embodiment, in order to facilitate cooperation with the side clamping block 42, the end support assembly 21 further includes an end side support block disposed on the adjustable end support plate 211, the side clamping block 42 faces the end side support block, the side clamping drive is a cylinder, and the side clamping arm 41 is disposed on the side clamping drive.

[0032] During clamping, the side features of the frame are located in the side clamping space. The side clamping drive then moves the side clamping block 42 towards the end support block, thereby clamping the side features. The cooperation between the side clamping structure 4 and the end support assembly 21 allows the fixture to adapt to the side features of different frame models, increasing its adaptability to various products. It is understood that, similar to the through-mount positioning post 214, the side clamping structure 4 can be used as a detachable component via a threaded connection, allowing for adjustment of its position or disassembly and installation as needed.

[0033] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A multi-point positioning quick clamp, comprising a base (1), characterized in that, It also includes an adjustable support structure (2) and an adjustable clamping structure (3) disposed on the base (1); the adjustable support structure (2) includes an end support assembly (21) and a middle support assembly (22); the end support assembly (21) includes an adjustable end support plate (211) and an end support block (212) disposed on the adjustable end support plate (211), the end support block (212) having an end support end (2121); the middle support assembly (22) includes an adjustable middle support plate (221) disposed on the base (1). The adjustable clamping structure (3) includes a clamping arm (31) hinged to the adjustable end support plate (211) and a plurality of adjustable clamping blocks (32) disposed on the clamping arm (31), the adjustable clamping blocks (32) facing the end support end (2121).

2. The multi-point positioning quick clamp according to claim 1, characterized in that, The end support assembly (21) further includes a plurality of clamping positioning posts (213) and a through positioning post (214) disposed on the adjustable end support plate (211); a positioning space for accommodating the frame is formed between the plurality of clamping positioning posts (213); the plurality of through positioning posts (214) are disposed in the frame to position and fix the frame.

3. A multi-point positioning quick clamp according to claim 2, characterized in that, Several clamping positioning pins (213) are paired together to form several positioning spaces, and the ends of the two clamping positioning pins (213) are far apart from each other to form an opening.

4. A multi-point positioning quick clamp according to claim 2, characterized in that, The through-positioning post (214) is detachably connected to the adjustable end support plate (211).

5. A multi-point positioning quick clamp according to claim 2, characterized in that, Several of the adjustable clamping blocks (32) also face the through-positioning post (214), and the adjustable clamping blocks (32) facing the through-positioning post (214) are provided with relief grooves for cooperating with the through-positioning post (214).

6. A multi-point positioning quick clamp according to any one of claims 1-5, characterized in that, It also includes a side clamping structure (4), which includes a side clamping arm (41) disposed on the base (1), a side clamping block (42) disposed on the side clamping arm (41), and a side clamping drive for driving the side clamping arm (41); the side clamping arm (41) faces the end support assembly (21), and a side clamping space is formed between the side clamping arm (41) and the end support assembly (21).

7. A multi-point positioning quick clamp according to claim 6, characterized in that, The end support assembly (21) further includes an end-side support block disposed on the adjustable end support plate (211), and the side clamping block (42) faces the end-side support block.

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