High-compatibility pressing clamp

Abstract

The high-compatibility press-fit clamp comprises a main body frame, an adjustable cross beam and a movable press-fit assembly, the connecting positions of the opposite sides in the adjustable cross beam and the main body frame are adjustable, a first adjusting groove is formed in the adjustable cross beam, and the movable press-fit assembly comprises a movable sliding block, a universal support and an adjustable balance weight pressing block. The movable sliding block slides to the needed position in the first adjusting groove and then is fixedly connected with the adjustable cross beam, the movable sliding block is detachably connected with an adjustable balance weight pressing block in the length direction, the universal support is connected with the main body frame, the connecting position of the universal support and the main body frame is adjustable, and the universal support is detachably connected with an adjustable balance weight pressing block. According to the press-fit clamp, a profiling pressing block clamp does not need to be accurately customized for each press-fit point position of different models and different PCBA board specifications, the design and manufacturing cost of the clamp is reduced, and the delivery period is shortened.

Description

Technical Field

[0001] This invention relates to the field of circuit board manufacturing technology, and in particular to a highly compatible pressing fixture. Background Technology

[0002] In some PCBA manufacturing processes, the sandwich process (soldering is achieved by laminating upper and lower layers) and the Cavity process (the soldering environment is controlled by the cavity structure) require extremely high precision from the laminating device. In the existing technology, laminating devices for these two processes generally use a combination of a dedicated machine model and a contour laminating fixture, that is, the shape of the laminating fixture and the laminating parameters are customized according to the specific machine model and the laminating points of the PCBA board. While this method can meet the pressing accuracy requirements, the contour pressing fixture needs to be designed according to the PCBA board to be processed, involving CAD modeling, CAE simulation (such as stress analysis and thermal deformation simulation), and prototype manufacturing. The average design cycle is 7 days, the manufacturing cycle is about 15 days, and the overall delivery time exceeds 20 days. This makes it difficult to meet the needs of rapid switching between small batches and multiple varieties. Moreover, the contour pressing fixture designed and manufactured according to specific models and PCBA boards has poor compatibility and is difficult to adapt to different models or PCBA versions. This results in the need to customize corresponding pressing fixtures for each model and version. If customers make minor adjustments to the commonly used PCBA board due to component shortages, function upgrades, or process improvements (such as slight offsets in component position and height), the contour pressing fixture cannot be adapted to the changes through fine-tuning, resulting in the scrapping of all the fixtures already manufactured, leading to high processing costs. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a flexible and adaptable pressing fixture that can apply pressure to any position on the pressed PCBA board to prevent deformation and desoldering. It can be reused and can be used to cope with production tasks with tight project cycles.

[0004] The objective of this invention is achieved through the following technical solution: A highly compatible pressing fixture includes: a main frame, an adjustable crossbeam, and a movable pressing assembly. The adjustable crossbeam has two ends connected to opposite sides within the main frame, and the connection position between the adjustable crossbeam and the opposite sides within the main frame is adjustable. A first adjustment groove is provided on the adjustable crossbeam. The movable pressing assembly includes a movable slider, a universal bracket, and an adjustable weight block. The movable slider slides within the first adjustment groove to the desired position and is then connected and fixed to the adjustable crossbeam. The movable slider is detachably connected to the adjustable weight block along its length. The universal bracket is connected to the main frame, and the connection position between the universal bracket and the main frame is adjustable. The adjustable weight block is detachably connected to the universal bracket.

[0005] In a preferred embodiment, there are 4 adjustable crossbeams, 4 universal brackets, the main frame is at the same height on both sides, the adjacent sides of the main frame are at different heights, and every 2 adjustable crossbeams connect the main frame at the same height on both sides.

[0006] In a preferred embodiment, the adjustable crossbeam is connected to the main frame using an anti-rotation pin assembly. The anti-rotation pin assembly includes an anti-rotation pin and an anti-rotation fixing pin. The inner sides of the main frame are provided with a plurality of sequentially arranged connecting square holes. When the adjustable crossbeam is connected to the main frame, the anti-rotation pin is inserted into the connecting square hole. The anti-rotation pin passes through the unsupported end of the connecting hole and connects to the adjustable crossbeam. The anti-rotation fixing pin is pin-connected and fixed to the adjustable crossbeam and the anti-rotation pin.

[0007] In a preferred embodiment, the anti-rotation pin is provided with at least one set of pin holes, each set of pin holes including two through holes, the two through holes having the same axis and intersecting and communicating with each other, and the openings of the two through holes are respectively opened on one side of the anti-rotation pin.

[0008] In a preferred embodiment, a first magnetic block is provided at each end of the anti-rotation pin, and the polarity of the two first magnetic blocks facing the center of the anti-rotation pin is the same. A second magnetic block is provided at each end of the adjustable beam, and the polarity of the second magnetic block facing the anti-rotation pin is the same as the polarity of the first magnetic block facing away from the center of the anti-rotation pin. After the anti-rotation pin is connected to the adjustable beam, the first magnetic block and the second magnetic block near the connection position are opposite each other.

[0009] In a preferred embodiment, a second adjustment groove is provided on one side of the universal bracket, and a plurality of fixed through holes are arranged sequentially around the main frame. The second adjustment groove can be connected to any fixed through hole at any position by bolts, and an adjustable heavy-duty block is connected to the other side of the universal bracket.

[0010] In a preferred embodiment, the adjustable counterweight block includes a pressure head, a counterweight part, and a connecting part. The counterweight part is connected between the pressure head and the connecting part. The counterweight part includes a fixed platform and a counterweight area. The fixed platform faces the pressure head. The counterweight area is connected to the fixed platform. A counterweight block is sleeved on the counterweight area. The counterweight block is fixed to the fixed platform by a nut. The connecting part is connected to the movable slider or universal bracket.

[0011] In a preferred embodiment, the pressure head, counterweight, and connecting part are integrally formed.

[0012] In a preferred embodiment, the counterweight and the connecting part are connected in an adjustable height direction.

[0013] In a preferred embodiment, the movable slider is provided with a serrated groove, and a plurality of serrated slots are provided inside the serrated groove. The serrated slots match the outer diameter of the connecting part, and the connecting part is engaged with the movable slider after being inserted into any of the serrated slots.

[0014] Compared with the prior art, the present invention has at least the following advantages: 1. The pressing fixture of the present invention adjusts the coverage area of ​​the workpiece to be processed by the position change of the adjustable crossbeam within the main frame, adjusts the pressing position range of the workpiece to be processed by the movable connection between the movable slider and the adjustable crossbeam, and covers the pressing position that the movable slider cannot reach at the edge of the main frame by the flexible connection between the universal bracket and the main frame. Thus, it can cover any position on the PCBA board within the coverage area of ​​the main frame, and reliably applies pressure to any position by the adjustable counterweight block connected to the movable slider / universal bracket, effectively preventing deformation and solder joint failure, improving the comprehensiveness and reliability of pressing, and ensuring product quality.

[0015] 2. The pressing fixture of the present invention does not require precise customization of the contour pressing block for each pressing point. It only requires adjusting the position of the adjustable beam, movable slider, universal bracket and counterweight pressing block and selecting the parameters of the counterweight pressing block to adapt to the finely tuned new PCBA design, thereby reducing the fixture design and manufacturing cost and shortening the delivery cycle.

[0016] 3. The pressing fixture of the present invention has a main frame that is easy to connect with pressing brackets of different models, and adjustable crossbeams, movable sliders, universal brackets, and counterweight blocks that can be flexibly adjusted and assembled. This facilitates quick adjustment of the pressing coverage and precise correspondence of pressing points according to the pressing requirements of different products, greatly improving the compatibility of the pressing fixture and facilitating flexible allocation of production lines and optimized utilization of production resources. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below.

[0018] Figure 1 This is a schematic diagram of the structure of a highly compatible pressing fixture according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the anti-rotation pin assembly and the adjustable crossbeam connection structure in one embodiment of the present invention; Figure 3 This is a schematic diagram of a movable pressing component in one embodiment of the present invention; Figure 4 An exploded view of an adjustable heavy-duty block according to one embodiment of the present invention; Figure 5 This is a schematic diagram of an adjustable crossbeam and an anti-rotation pin in one embodiment of the present invention. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing and simplifying the invention; they should not be construed as limiting the invention.

[0022] See Figures 1-5 A highly compatible pressing fixture includes a main frame 100, an adjustable crossbeam 200, and a movable pressing assembly 300. The adjustable crossbeam 200 is connected at both ends to opposite sides within the main frame 100, and the connection position between the adjustable crossbeam 200 and the opposite sides within the main frame 100 is adjustable. A first adjustment groove 210 is provided on the adjustable crossbeam 200. The movable pressing assembly 300 includes a movable slider 310, a universal bracket 320, and an adjustable weight block 330. The movable slider 310 slides within the first adjustment groove 210 to the desired position and is then connected and fixed to the adjustable crossbeam 200. The adjustable weight block 330 is detachably connected to the movable slider 310 along its length. The universal bracket 320 is connected to the main frame 100, and the connection position between the universal bracket 320 and the main frame 100 is adjustable. The adjustable weight block 330 is detachably connected to the universal bracket 320.

[0023] It should be noted that this highly compatible pressing fixture solution can achieve precise pressure on any position on the PCBA board that requires gravity pressure to ensure processing quality through the adjustable connection and cooperation of each adjustable crossbeam 200, movable slider 310, universal bracket 320 and adjustable heavy pressure block 330 on the main frame 100. Specifically, the connection position between the adjustable crossbeam 200 and the opposite side of the main frame 100 is adjustable. That is, as the connection position of the adjustable crossbeam 200 changes, the coverage and pressure range within the main frame 100 can be flexibly adjusted according to the component to be pressed (PCBA board that requires gravity pressure to ensure processing quality). The movable slider 310 slides to the required position in the first adjustment groove 210 and is then connected and fixed to the adjustable crossbeam 200. The connection position between the universal bracket 320 and the main frame 100 is adjustable. In this way, the movable slider 310 can precisely move within the coverage area of ​​the adjustable crossbeam 200 to the corresponding area on the adjustable crossbeam 200 that requires pressing and is then connected and fixed to the adjustable crossbeam 200. Then, the adjustable counterweight block 330 connected to it applies its own weight pressure to the easily deformable parts of the PCBA. For the edges of the frame that the movable slider 310 cannot cover but require pressing, the movable slider 310 can apply its own weight pressure. The pressure position is adjusted by changing the connection between the universal bracket 320 and the main frame 100, and then the adjustable counterweight pressure block 330 connected to the universal bracket 320 is used for pressing. The adjustable counterweight pressure block 330 is detachably connected to the movable slider 310 and the universal bracket 320. Its counterweight and height can be changed according to the pressure requirements of the pressing position, so as to achieve coverage and reliable pressure on any position on the PCBA board, effectively preventing PCBA board deformation and solder joint failure during processing, improving the comprehensiveness and reliability of pressing, and ensuring product quality. Since the adjustable crossbeam 200 and movable components connected to the main frame 100 are flexibly adjustable, it is compatible with various processing machine types and various PCBA board specifications. Especially for minor adjustments to conventional PCBA boards (such as minor offsets in component position and height), there is no need to make new pressing fixtures, thereby shortening the production time and reducing costs.

[0024] In practical applications, this pressing clamp can be used on a pressing device. The pressing clamp is set above the base (not shown in the figure) of the pressing device. The workpiece to be operated is placed on the base. The pressing clamp can be adjusted by adjusting the crossbeam and the universal bracket 320 to press the adjustable heavy pressure block 330 onto any pressing position on the workpiece to be operated.

[0025] By setting the connection position of the adjustable crossbeams 200 or increasing or decreasing the number of adjustable crossbeams 200, the coverage area within the main frame 100 can be adjusted according to the specifications of the component to be pressured. Figure 1As shown, there are four adjustable crossbeams 200. The main frame 100 is at the same height on both sides, but the heights of adjacent sides of the main frame 100 are different. Every two adjustable crossbeams 200 connect the two sides of the main frame 100 at the same height. There are also four universal brackets 320. By adjusting the position of each adjustable crossbeam 200, the coverage area of ​​the cover plate can be expanded and the pressing stability can be improved. The four universal brackets 320 can be flexibly adjusted to correspond to the positions that the movable sliders 310 on the adjustable crossbeams 200 cannot cover but need to be pressed. It can be understood that for small-sized parts to be processed, the number of crossbeams can be reduced to improve operational flexibility.

[0026] When the movable pressing assembly 300 moves on the adjustable crossbeam 200 and applies pressure, if the adjustable crossbeam 200 rotates, it will seriously affect the accuracy of the pressing position and force, making it impossible to accurately press the PCBA board. To prevent the adjustable crossbeam 200 and the main frame 100 from shifting their pressing positions during processing, the adjustable crossbeam 200 and the main frame 100 are connected by an anti-rotation pin assembly 400. The anti-rotation pin assembly 400 includes an anti-rotation pin 410 and an anti-rotation fixing pin 420. The inner sides of the main frame 100 are provided with several sequentially arranged connecting square holes 110. When the adjustable crossbeam 200 is connected to the main frame 100, the anti-rotation pin 410 is inserted into the connecting square hole 110, and the anti-rotation pin 410 passes through the open end of the connection and connects to the adjustable crossbeam 200. The anti-rotation fixing pin 420 is pin-fixed to the adjustable crossbeam 200 and the anti-rotation pin 410.

[0027] It should be noted that after the anti-rotation pin 410 passes through the connecting square hole 110 and is connected to the adjustable crossbeam 200, it is fixed to the adjustable crossbeam 200 and the anti-rotation pin 410 by the anti-rotation fixing pin 420. This ensures that the adjustable crossbeam 200 can be accurately positioned and firmly fixed after being adjusted to the required position, avoiding loosening or displacement during use, and ensuring the reliability and stability of the fixture operation. In other words, the anti-rotation pin assembly 400, through the combined action of the anti-rotation pin 410 and the anti-rotation fixing pin 420, tightly connects the adjustable crossbeam 200 to the main frame 100, and effectively restricts the rotational freedom of the adjustable crossbeam 200, allowing the movable pressing assembly 300 to precisely press the object according to the predetermined position and direction, thereby improving product quality and production efficiency. The connecting square holes 110 provided in the main frame 100 allow the anti-rotation pin 410 to be easily aligned with these connecting square holes 110 and inserted, making the adjustment of the connection position between the adjustable beam 200 and the main frame 100 simple and quick. Furthermore, connecting square holes 110 of different heights can be provided to quickly adjust the adjustable beam 200 to a suitable height position according to actual needs.

[0028] Specifically, in one embodiment, the anti-rotation pin 410 is provided with a pin connection hole, and the adjustable crossbeam 200 is provided with a pin opening 220 and a pin interface 230 at both ends. When the adjustable crossbeam 200 is connected to the main frame 100, the pin opening 220 is aligned with a connecting square hole 110, one end of the anti-rotation pin 410 passes through the connecting square hole 110, and the other end is inserted into the pin opening 220. The anti-rotation fixing pin 420 passes through the pin connection hole and is inserted into the pin interface 230 to be pin-connected and fixed with the adjustable crossbeam 200 and the anti-rotation pin 410.

[0029] In one embodiment, the anti-rotation pin 410 is provided with at least one set of pin-fitting holes. Each set of pin-fitting holes includes two through holes. The two through holes have the same axis and intersect each other. The opening of each through hole is respectively opened on the opposite side of the anti-rotation pin 410. It should be noted that this design allows the anti-rotation pin 410 to have a through hole on each of its four sides that can be assembled with the anti-rotation fixing pin 420 at the same corresponding position. That is, all four sides of the anti-rotation pin 410 are pin-fitting surfaces. It is understandable that during actual installation, the operator may be in different perspectives and positions. If the anti-rotation pin 410 only has one specific pin-fitting surface, the operator would need to spend time identifying and adjusting the direction of the pin to ensure that the pin-fitting through hole is in an operable position. However, with the design of the pin-fitting through hole, all four sides of the anti-rotation pin 410 are pin-fitting surfaces. No matter which direction the operator inserts the anti-rotation pin 410 from, they can directly find the through hole for pin-fitting operation, making the installation process simpler and faster, saving installation time, and improving work efficiency.

[0030] To further enhance the anti-rotation and offset performance, the anti-rotation pin 410 is provided with a first magnetic block 412 at both ends. The two first magnetic blocks 412 have the same polarity on the side facing the center of the anti-rotation pin 410. The adjustable crossbeam 200 is provided with a second magnetic block 240 at both ends. The side of the second magnetic block 240 facing the anti-rotation pin 410 has the same polarity as the side of the first magnetic block 412 facing away from the center of the anti-rotation pin 410. After the anti-rotation pin 410 is connected to the adjustable crossbeam 200, the first magnetic block 412 and the second magnetic block 240 near the connection position are opposite each other. It should be noted that this design generates a repulsive magnetic force when the polarities are the same. The direction of this force is along the line connecting the centers of the two magnetic poles, and it always tries to keep the two magnetic poles away from each other. As a result, after the two components (adjustable beam 200 and anti-rotation pin 410) are connected, this magnetic force exists both inside the same component and between the two components, thus providing a preload. When the anti-rotation pin 420 is inserted, it needs to overcome the preload. After insertion, the connection between the pin and the anti-rotation pin 410 and the adjustable beam 200 is more stable due to this preload. During use, when the adjustable beam 200 tends to rotate, the magnetic force between the first and second magnetic blocks 240 will form a resistance torque, preventing the beam from rotating. This resistance torque cancels out the rotational torque generated by the external force, making it more difficult for the adjustable beam 200 to rotate, thereby enhancing the structural stability and reliability of the entire fixture.

[0031] In one embodiment, a second adjustment groove 321 is provided on one side of the universal bracket 320, and a plurality of sequentially arranged fixing through holes 120 are provided around the main frame 100. The second adjustment groove 321 can be bolted to any of the fixing through holes 120 at any position. An adjustable counterweight block 330 is connected to the other side of the universal bracket 320. It is understood that this design greatly enhances the flexibility of adjusting the pressing position of the counterweight block on the universal bracket 320. Specifically, the second adjustment groove 321 of the universal bracket 320 can be connected to any of the fixing through holes 120 on the main frame 100. For positions on the adjustable crossbeam 200 that cannot be pressed, the universal bracket 320 can flexibly adjust its connection position and angle with the main frame 100 by selecting the position of the fixing through hole 120 on the main frame 100. Figure 3 The second adjustment groove 321 also allows the universal bracket 320 to adjust its connection position with the fixed through hole 120 in the length direction.

[0032] In one embodiment, the adjustable counterweight block 330 includes a pressure head 331, a counterweight part 332, and a connecting part 333. The counterweight part 332 is connected between the pressure head 331 and the connecting part 333. The counterweight part 332 includes a fixed platform 332a and a counterweight area 332b. The fixed platform 332a faces the pressure head 331. The counterweight area 332b is connected to the fixed platform 332a. A counterweight block 334 is sleeved on the counterweight area 332b. The counterweight block 334 is fixed on the fixed platform 332a by a nut 335. The connecting part 333 is connected to a movable slider 310 or a universal bracket 320.

[0033] It should be noted that the counterweight area 332b is fitted with counterweight blocks 334 and fixed to the fixed platform 332a by nuts 335. The number of counterweight blocks 334 can be easily increased or decreased according to actual pressing requirements. The counterweight blocks 334 can also have different specifications and weights. Therefore, for each pressing position, the appropriate weight and number of counterweight blocks 334 can be selected and combined according to the specific situation to achieve fine adjustment of pressure. For PCBA board welding processes with high pressing accuracy requirements, it can achieve fine pressure adjustment to ensure that the pressing process reaches sufficient pressure to ensure a firm connection, without damaging the workpiece due to excessive pressure. The counterweight part 332 firmly fixes the counterweight blocks 334 together through the fixed platform 332a and nuts 335 to ensure that the counterweight blocks 334 will not move or loosen during the pressing process, thereby ensuring stable pressure transmission. It is understandable that the pressure head 331, as the part that directly contacts the workpiece, can be specially designed according to the shape and size of different pressing positions. For planar shapes, it can be designed as a planar shape to provide uniform pressure distribution. For curved shapes, the pressure head 331 can be designed as a corresponding curved shape to fit well with the workpiece surface and ensure effective pressure transmission. The pressure head 331, the counterweight 332, and the connecting part 333 can be integrally formed or modularly designed. To meet the connection height of the adjustable counterweight block 330 at different positions, in one embodiment, the counterweight 332 and the connecting part 333 are adjustable in height. The adjustable connection can adopt existing technologies such as segmented limiting and segmented snap-fit ​​connection methods, which will not be elaborated further.

[0034] In one embodiment, the movable slider 310 is provided with a serrated groove, and a plurality of serrated locking positions are provided inside the serrated groove. The serrated locking positions match the outer diameter of the connecting part 333. After the connecting part 333 is inserted into any serrated locking position, it is locked onto the movable slider. For example, a hook 333a is provided in the connecting part. After the connecting part 333 is inserted into any serrated locking position, it is locked onto the movable slider 310 by a snap ring 312 and a groove 333a. It should be noted that the sawtooth slots inside the sawtooth grooves provide multiple precise positioning points for the connecting part 333. Operators can insert the connecting part 333 into different sawtooth slots according to actual needs, so as to achieve precise adjustment of the position of the adjustable heavy block 330 on the movable slider 310, which meets the strict requirements for positional accuracy when pressing different workpieces. When the connecting part 333 is inserted into any sawtooth slot, the retaining spring 312 is engaged and fixed with the retaining groove 333a, forming a stable and reliable connection structure, which ensures the stability of the adjustable heavy block 330 during operation. At the same time, this engagement and fixing method also makes the installation and disassembly of the adjustable heavy block 330 very convenient and quick. Operators do not need to use complicated tools. They only need to remove or install the retaining spring 312 to easily pull out or insert the connecting part 333 from the sawtooth slot, so as to achieve quick replacement and position adjustment of the adjustable heavy block 330.

[0035] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A highly compatible pressing fixture, characterized in that, include: Main framework; An adjustable crossbeam is provided, with its two ends connected to opposite sides of the main frame. The connection position between the adjustable crossbeam and the opposite sides of the main frame is adjustable, and a first adjustment groove is provided on the adjustable crossbeam. The movable pressing assembly includes a movable slider, a universal bracket, and an adjustable weight block. After the movable slider slides to the desired position in the first adjustment groove, it is connected and fixed to the adjustable crossbeam. The movable slider is detachably connected to the adjustable weight block in the length direction. The universal bracket is connected to the main frame, and the connection position between the universal bracket and the main frame is adjustable. The adjustable weight block is detachably connected to the universal bracket.

2. The high-compatibility pressing fixture according to claim 1, characterized in that, There are 4 adjustable crossbeams and 4 universal brackets. The main frame is at the same height on both sides, but the heights of adjacent sides of the main frame are different. Every 2 adjustable crossbeams connect the main frame at the same height on both sides.

3. The high-compatibility pressing fixture according to claim 1, characterized in that, The adjustable crossbeam is connected to the main frame using an anti-rotation pin assembly. The anti-rotation pin assembly includes an anti-rotation pin and an anti-rotation fixing pin. The inner sides of the main frame are provided with a plurality of sequentially arranged connecting square holes. When the adjustable crossbeam is connected to the main frame, the anti-rotation pin is inserted into the connecting square hole. The anti-rotation pin passes through the open end of the connecting hole and connects to the adjustable crossbeam. The anti-rotation fixing pin is pin-connected and fixed to the adjustable crossbeam and the anti-rotation pin.

4. The high-compatibility pressing fixture according to claim 3, characterized in that, The anti-rotation pin is provided with at least one set of pin holes, each set of pin holes including two through holes. The two through holes have the same axis and intersect each other. The openings of the two through holes are respectively opened on one side of the anti-rotation pin.

5. The high-compatibility pressing fixture according to claim 4, characterized in that, The anti-rotation pin has a first magnetic block at each end, and the two first magnetic blocks have the same polarity on the side facing the center of the anti-rotation pin. The adjustable beam has a second magnetic block at each end, and the side of the second magnetic block facing the anti-rotation pin has the same polarity as the side of the first magnetic block facing away from the center of the anti-rotation pin. After the anti-rotation pin is connected to the adjustable beam, the first magnetic block and the second magnetic block near the connection position are opposite each other.

6. The high-compatibility pressing fixture according to claim 1, characterized in that, The universal bracket has a second adjustment groove on one side, and a number of fixed through holes arranged in sequence are provided around the main frame. The second adjustment groove can be connected to any fixed through hole by bolts at any position. An adjustable heavy block is connected to the other side of the universal bracket.

7. The high-compatibility pressing fixture according to claim 1, characterized in that, The adjustable counterweight block includes a pressure head, a counterweight part, and a connecting part. The counterweight part is connected between the pressure head and the connecting part. The counterweight part includes a fixed platform and a counterweight area. The fixed platform faces the pressure head. The counterweight area is connected to the fixed platform. A counterweight block is sleeved on the counterweight area. The counterweight block is fixed to the fixed platform by a nut. The connecting part is connected to the movable slider or universal bracket.

8. The high-compatibility pressing fixture according to claim 7, characterized in that, The pressure head, counterweight, and connecting part are integrally formed.

9. The high-compatibility pressing fixture according to claim 7, characterized in that, The counterweight and connecting part are adjustable in height.

10. The high-compatibility pressing fixture according to claim 9, characterized in that, The movable slider is provided with a serrated hole groove, and a number of serrated slots are provided inside the serrated hole groove. The serrated slots match the outer diameter of the connecting part. After the connecting part is inserted into any serrated slot, it is locked onto the movable slider.

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