Framework welding and fixing tool

Abstract

The utility model provides a framework welding fixing tool, which belongs to the technical field of sensor framework welding process fixing tools, and comprises a framework positioning mechanism, the framework positioning mechanism comprises a positioning bottom plate, the positioning bottom plate is provided with a profiling positioning groove and a sensor framework in the profiling positioning groove, and the sensor framework is arranged in the profiling positioning groove. The positioning bottom plate is provided with a chip end pressing plate and a pin end pressing plate, the chip end pressing plate is provided with a pressing piece, through the device, preliminary profiling positioning of the sensor framework is realized, a chip pin can be attached to a bonding pad, welding spots on the two sides can be isolated from black sensor frameworks on the two sides, and the precision of the sensor framework is improved. The black plastic is effectively prevented from absorbing heat during laser welding, thermal deformation and color change of the framework are prevented, the framework can be prevented from tilting during welding, meanwhile, the black framework on the two sides of the contact pin and the black framework on the two sides of the welding spot are isolated, and the black plastic is further prevented from absorbing the heat during laser welding.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of fixing fixtures for sensor frame welding process, specifically a frame welding fixing fixture. Background Technology

[0002] The sensor frame is an important component of a sensor. It usually refers to the structural framework used to support and fix various sensitive elements, circuit elements and connecting lines inside the sensor. Depending on the sensor's operating environment and performance requirements, the frame is usually made of materials with good mechanical strength, stability, conductivity, thermal conductivity and corrosion resistance. Common materials include metals, engineering plastics and ceramics.

[0003] In the current laser welding process for camshaft position sensors, close-proximity weld points are easier to operate during welding to allow welders to more accurately control the flow and landing point of the solder. This allows the solder to adhere better to the parts to be connected, improving welding quality and efficiency. However, in the sensor frame welding process, because the weld points are close to the frame, the heat from laser welding is absorbed by the black plastic particles on both sides of the frame, leading to unstable welding quality and frequent occurrences of incomplete welds. In addition, the frame positioning is relatively loose during the welding process, which can easily cause wobbling, resulting in deviations in the welding position and unstable welding quality, affecting product quality and yield. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing solutions are too simplistic. Specifically, this utility model provides a frame welding and fixing fixture to solve the technical problem mentioned in the background art, where the weld point is too close to the frame in the current sensor laser welding process, which easily leads to unstable welding quality.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A frame welding and fixing fixture includes a frame positioning mechanism. The frame positioning mechanism includes a positioning base plate with multiple contoured positioning grooves, and a sensor frame is disposed within each contoured positioning groove. The positioning base plate is provided with a chip end pressure plate and a pin end pressure plate. The pin end pressure plate presses against the pin position of the sensor frame. The chip end pressure plate is provided with a clamping component, which includes a mounting plate and a clamping plate. Every two clamping plates form a group, and each group of clamping plates presses against the chip end position of the same sensor frame.

[0007] Furthermore, the mounting plate and the chip end plate are detachably connected.

[0008] Furthermore, the positioning base plate is provided with a first mounting hole and a second mounting hole. The first mounting hole is connected to a third mounting hole by bolts. The third mounting hole is located on both sides of the chip end pressure plate. The second mounting hole is connected to a fourth mounting hole by bolts. The fourth mounting hole is located on both sides of the pin end pressure plate.

[0009] Furthermore, the pin end pressure plate has multiple notches linearly arranged at equal intervals on one side.

[0010] Furthermore, the contour positioning grooves on the positioning base plate are linearly distributed at equal intervals.

[0011] Furthermore, the sensor skeleton includes a skeleton body, connecting pieces, chip pins, and a pin body.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention achieves initial contour positioning of the sensor frame through the cooperation between the positioning base plate and the contour positioning groove. The chip end pressure plate, pin end pressure plate, clamping component, mounting plate, and clamping plate work together to ensure that the chip pins are properly attached to the pads during subsequent clamping and positioning. This also isolates the solder joints on both sides from the black sensor frame, effectively preventing the black plastic from absorbing heat during laser welding, thus preventing frame deformation and color change. Furthermore, it prevents the frame from warping during welding. Simultaneously, isolating the pin sides from the black frame sides of the solder joints further prevents the black plastic from absorbing heat during laser welding, protecting the frame material properties, reducing thermal stress, and improving the quality and stability of the sensor.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the overall structure of this utility model;

[0017] Figure 3 This is an exploded view of the sensor skeleton of this utility model.

[0018] In the diagram: 1. Skeleton positioning mechanism; 11. Positioning base plate; 111. Contouring positioning groove; 112. First mounting hole; 113. Second mounting hole; 12. Chip end pressure plate; 121. Third mounting hole; 13. Pin end pressure plate; 131. Notch; 132. Fourth mounting hole; 14. Clamping component; 141. Mounting plate; 142. Clamping piece; 2. Sensor skeleton; 21. Skeleton body; 22. Connecting piece; 23. Chip pin; 24. Pin body. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please refer to the appendix carefully. Figure 1-3 A frame welding and fixing fixture includes a frame positioning mechanism 1. The frame positioning mechanism 1 includes a positioning base plate 11. The positioning base plate 11 is provided with a plurality of contour positioning grooves 111, and a sensor frame 2 is provided in the contour positioning grooves 111. The positioning base plate 11 is provided with a chip end pressure plate 12 and a pin end pressure plate 13. The pin end pressure plate 13 presses on the pin position of the sensor frame 2. The chip end pressure plate 12 is provided with a clamping member 14. The clamping member 14 includes a mounting plate 141 and a clamping piece 142. Every two clamping pieces 142 form a group, and each group of clamping pieces 142 presses on the same chip end position of the sensor frame 2.

[0023] The above structure enables the initial contouring and positioning of the sensor frame 2. During the subsequent clamping and positioning process, it allows the chip pins 23 to be attached to the pads and isolates the solder joints on both sides from the black sensor frame 2. This effectively prevents the black plastic from absorbing heat during laser welding, thus preventing the frame from deforming or changing color due to heat. Furthermore, it prevents the frame from warping during welding and isolates the black frame on both sides of the pins from the black frame on both sides of the solder joints, further preventing the black plastic from absorbing heat during laser welding, protecting the frame material properties, reducing thermal stress, and improving the quality and stability of the sensor.

[0024] The specific operation is as follows: First, place the sensor frame 2 in the contour positioning groove 111 of the positioning base plate 11. Then, install the chip end pressure plate 12 on the positioning base plate 11 by bolts. The function of the clamping part 14 on the chip end pressure plate 12 is to better fit the chip pin 23 to the solder pad. In addition, it can also isolate the solder joints on both sides from the black frame body 21 on both sides to prevent the black plastic from absorbing the heat during laser welding. Then, fix the pin end pressure plate 13 on the positioning base plate 11. The function of the pin end pressure plate 13 is to prevent the frame from lifting and to isolate the sides of the pin body 24 from the black frame on both sides of the solder joint to prevent the black plastic from absorbing the heat during laser welding.

[0025] Please refer to the appendix carefully. Figure 2 and attached Figure 3 The mounting plate 141 and the chip end pressure plate 12 are detachably connected, facilitating assembly and operation. The positioning base plate 11 has a first mounting hole 112 and a second mounting hole 113. The first mounting hole 112 is bolted to a third mounting hole 121, which is located on both sides of the chip end pressure plate 12. The second mounting hole 113 is bolted to a fourth mounting hole 132, which is located on both sides of the pin end pressure plate 13. The bolts provide locking and positioning, resulting in lower cost and easier operation. Disassembly by personnel: Multiple notches 131 are linearly arranged at equal intervals on one side of the pin end pressure plate 13. The design of the notches 131 reduces the contact area between the pin end pressure plate 13 and the sensor frame 2, facilitating welding. The contoured positioning grooves 111 on the positioning base plate 11 are linearly distributed at equal intervals. The reasonable distribution allows multiple sensor frames 2 to be placed on the positioning base plate 11. The sensor frame 2 includes a frame body 21, a connecting piece 22, a chip pin 23, and a pin body 24. The pin body 24 and the connecting piece 22 are connected by insertion.

[0026] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A frame welding and fixing fixture, comprising a frame positioning mechanism (1), characterized in that, The skeleton positioning mechanism (1) includes a positioning base plate (11), on which a plurality of contour positioning grooves (111) are provided, and a sensor skeleton (2) is provided in the contour positioning grooves (111). A chip end pressure plate (12) and a pin end pressure plate (13) are provided on the positioning base plate (11). The pin end pressure plate (13) presses on the pin position of the sensor skeleton (2). A clamping member (14) is provided on the chip end pressure plate (12). The clamping member (14) includes a mounting plate (141) and a clamping piece (142). Every two clamping pieces (142) form a group, and each group of clamping pieces (142) presses on the same chip end position of the sensor skeleton (2).

2. The skeleton welding and fixing fixture according to claim 1, characterized in that, The mounting plate (141) and the chip end plate (12) are detachably connected.

3. The skeleton welding and fixing fixture according to claim 1, characterized in that, The positioning base plate (11) is provided with a first mounting hole (112) and a second mounting hole (113). The first mounting hole (112) is connected to a third mounting hole (121) by bolts. The third mounting hole (121) is located on both sides of the chip end pressure plate (12). The second mounting hole (113) is connected to a fourth mounting hole (132) by bolts. The fourth mounting hole (132) is located on both sides of the pin end pressure plate (13).

4. The skeleton welding and fixing fixture according to claim 3, characterized in that, The pin end pressure plate (13) has multiple notches (131) arranged linearly at equal intervals on one side.

5. The skeleton welding and fixing fixture according to claim 3, characterized in that, The contour positioning grooves (111) on the positioning base plate (11) are linearly distributed at equal intervals.

6. The skeleton welding and fixing fixture according to claim 1, characterized in that, The sensor frame (2) includes a frame body (21), a connecting piece (22), chip pins (23), and a pin body (24).

Images