A printed circuit board production and processing rack

Abstract

The present application relates to the field of electronic material production, and particularly relates to a printed circuit board production and processing placing rack, which comprises two U-shaped racks, side beams and the like; two side beams are connected between the two U-shaped racks; two connecting pins are slidably connected to one end of each side beam. The present application first changes the relative positions of the copper-clad plates that are close together, so that the sides between adjacent copper-clad plates are misaligned, then a separating piece is inserted between adjacent copper-clad plates to quickly and batch-wise separate the copper-clad plates, and the present application can directly carry the copper-clad plates for copper deposition operation. Compared with the situation that after drilling, the copper-clad plates are stacked together, and before copper deposition, workers need to manually separate and transfer the copper-clad plates to the copper deposition line, the operation is complicated and the efficiency is low, while the present application can not only bear the copper-clad plates, but also quickly and batch-wise separate the copper-clad plates, and can directly carry the copper-clad plates for copper deposition immersion, reducing unnecessary transfer operation, and significantly improving the turnover efficiency between different processes.

Description

Technical Field

[0001] This invention relates to the field of electronic materials production, and more particularly to a rack for the production, processing, and placement of printed circuit boards. Background Technology

[0002] Copper clad laminate (CCL) is the substrate of circuit boards. After processes such as etching, drilling, and copper plating, the copper foil on the CCL is transformed into the designed circuit network. Components are then installed, and the circuit board becomes a circuit board that performs electrical interconnection and signal transmission functions. After drilling, the CCLs are stacked together for the next copper plating process. Before copper plating, workers need to manually separate the CCLs and transfer them to the copper plating line, which is cumbersome and inefficient. Furthermore, the existing CCL placement racks for copper plating lines do not have a fixed structure. When the CCLs are moved between the chemical tanks of the copper plating line, they shake, which can easily cause changes in the spacing between adjacent CCLs. This leads to problems such as limited solution exchange, hydrogen bubble retention, and insufficient heat exchange, thus affecting the final quality of the copper plating. Summary of the Invention

[0003] To overcome the drawbacks of cumbersome and inefficient manual separation of copper-clad laminates and transfer to copper plating lines by workers, this invention provides a printed circuit board production and processing placement rack.

[0004] The technical embodiment of the present invention is as follows: a printed circuit board production and processing placement rack includes two U-shaped frames; a plurality of support rods for supporting copper-clad laminates are connected between the two U-shaped frames; it also includes side beams; two side beams are connected between the two U-shaped frames; two connecting pins are slidably connected to one end of each side beam; the top of the connecting pins protrudes from the side beam; one side beam is divided into a fixed beam and a movable beam; the connecting pin of this side beam is located on the movable beam; the movable beam contacts the top of the corresponding U-shaped frame; a rubber ring is fixedly attached to the top of each connecting pin; two corresponding rubber rings are attached to the two side beams. A connecting beam is detachably mounted between the connecting pins; another connecting beam is fixedly connected to the other end of the two side beams; a rubber block for adaptive fine-tuning of the length is provided in the middle of each connecting beam; a sliding groove is opened on each side beam; several connecting brackets are installed on each side beam through the sliding groove; the connecting brackets are inserted into the sliding groove; a wedge for locking the position is fixedly connected to the insertion end of the connecting bracket; a connecting locking unit is slidably connected to each connecting bracket; each connecting locking unit is connected to a mounting box; several separators for separating adjacent copper-clad laminates are installed on the mounting box.

[0005] Optionally, the connection locking unit includes: a connecting sleeve and a rotating pin; the connecting sleeve is slidably connected to the connecting frame; the connecting sleeve is fixedly connected to the mounting box; a moving groove is provided on the connecting frame; the connecting sleeve slides in the moving groove; a rotating pin is rotatably connected to the middle of the connecting sleeve; the connecting sleeve is deformable; the rotating pin has an elliptical cross-section.

[0006] Optionally, it also includes expansion tabs; each partition has an expansion tab connected to both sides; the expansion tabs are wedge-shaped with the acute angle facing the insertion end of the partition.

[0007] Optionally, it also includes a guide rod and an elastic element; the guide rod is installed inside the mounting box; all the partitions on each mounting box are slidably connected to the guide rod; an elastic element for adaptively adjusting the spacing is connected between adjacent partitions; the elastic element is sleeved with the guide rod.

[0008] Optionally, the insert end of the separator is tapered.

[0009] Optionally, the rubber ring is truncated cone-shaped.

[0010] Optionally, the connecting frame consists of L-shaped rod one and L-shaped rod two; L-shaped rod one and L-shaped rod two are connected in a damped sliding connection in the vertical direction; the mounting box is slidably connected to L-shaped rod two.

[0011] Optionally, the insertion end of the L-shaped rod is tapered.

[0012] Optionally, the U-shaped frame consists of L-shaped blocks on both sides, a connecting plate 1 in the middle, and a connecting plate 2 in the middle; both connecting plate 1 and connecting plate 2 are slidably connected to the L-shaped blocks; connecting plate 2 is fixedly connected to the support rod; the connecting beam consists of mounting blocks on both sides and a connecting block in the middle; the mounting blocks are slidably connected to the connecting blocks; several adjustment holes are provided on the connecting blocks; a limit pin is inserted into each mounting block; the limit pin is adapted to the adjustment hole; a rubber block is set in the middle of the connecting block; two locking pins are slidably connected on connecting plate 1; several locking grooves are provided on each L-shaped block; the locking pins are adapted to the locking grooves.

[0013] Optionally, the insertion end of the limiting pin is conical.

[0014] The present invention has the following advantages: It achieves batch and rapid separation of copper-clad laminates by first changing the relative positions of adjacent laminates, creating a misalignment between their sides, and then inserting separators between them. The separated laminates are placed on the present invention, allowing for direct copper plating. In contrast, after drilling, the laminates are stacked together, requiring manual separation and transfer to the plating line by workers, which is cumbersome and inefficient. The present invention not only supports the laminates but also enables rapid batch separation and direct copper plating for plating, reducing unnecessary transfer operations and significantly improving the turnover efficiency between different processes. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the printed circuit board production and processing rack of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the copper-clad laminate supporting the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the movable beam of the present invention moving backward;

[0018] Figure 4 This is a top view of the movable beam of the present invention moving backward;

[0019] Figure 5 This is a three-dimensional structural diagram of the connecting frame, mounting box, and partition plate of the present invention;

[0020] Figure 6 This is an exploded view of the L-shaped rod one, L-shaped rod two, mounting box and partition plate of the present invention;

[0021] Figure 7 This is a top view of the guide rod, separator, expansion piece, and elastic element of the present invention;

[0022] Figure 8 This is a top view of the copper-clad laminate after being separated by the separator of the present invention;

[0023] Figure 9 This is a schematic diagram of the three-dimensional structure of the present invention with maximum load-bearing capacity;

[0024] Figure 10 This is a three-dimensional structural schematic diagram of the connecting beam of the present invention;

[0025] Figure 11 This is a three-dimensional structural diagram of the U-shaped frame of the present invention;

[0026] Figure 12 This is a three-dimensional structural diagram of the L-shaped block, connecting plate 1, and locking pin of the present invention.

[0027] The meanings of the reference numerals in the diagram are as follows: 1-U-shaped frame, 101-support rod, 102-L-shaped block, 103-connecting plate one, 104-connecting plate two, 105-locking pin, 106-locking groove, 2-side beam, 201-fixed beam, 202-moving beam, 203-slide groove, 21-connecting pin, 22-rubber ring, 3-connecting beam, 301-mounting block, 302-connecting block, 303-adjusting hole, 304-limiting pin, 305-rubber block, 4-connecting frame, 401-L-shaped rod one, 402-L-shaped rod two, 403-wedge block, 404-connecting sleeve, 405-moving groove, 406-rotating pin, 5-mounting box, 501-guide rod, 6-separator, 601-expansion plate, 602-elastic element. Detailed Implementation

[0028] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] Example 1: As Figures 1-10 As shown, a printed circuit board production and processing rack includes two U-shaped frames 1 symmetrically arranged front and back; five support rods 101 are connected between the two U-shaped frames 1.

[0030] It also includes side beams 2, connecting beams 3, connecting frames 4, mounting boxes 5, and partition plates 6; two side beams 2 are connected between the two U-shaped frames 1; each side beam 2 has two connecting pins 21 slidably connected to one end; the top of the connecting pins 21 protrudes from the side beam 2; one of the side beams 2 is divided into a fixed beam 201 and a movable beam 202; the connecting pins 21 of this side beam 2 are located on the movable beam 202; the movable beam 202 contacts the top of the corresponding U-shaped frame 1; a rubber ring 22 is fixedly attached to the top of each connecting pin 21; the two corresponding connecting pins 201 on the two side beams 2 are... A connecting beam 3 is connected between the two side beams 1; another connecting beam 3 is fixedly connected to the other end of the two side beams 2; a rubber block 305 is provided in the middle of each connecting beam 3; five connecting brackets 4 are installed on each side beam 2; a sliding groove 203 is opened on each side beam 2; the connecting bracket 4 is inserted into the corresponding sliding groove 203; a wedge block 403 is fixedly connected to the insertion end of the connecting bracket 4; a connecting locking unit is slidably connected to each connecting bracket 4 in the horizontal direction; each connecting locking unit is connected to an installation box 5; several partition plates 6 are installed on the installation box 5.

[0031] The connection locking unit includes: a connecting sleeve 404 and a rotating pin 406; the connecting sleeve 404 is slidably connected to the connecting frame 4; the connecting sleeve 404 is fixedly connected to the mounting box 5; a moving groove 405 is provided on the connecting frame 4; the connecting sleeve 404 slides in the moving groove 405; a rotating pin 406 is rotatably connected to the middle of the connecting sleeve 404; the connecting sleeve 404 is deformable; the rotating pin 406 has an elliptical cross-section.

[0032] It also includes an expansion piece 601; each separator 6 has an expansion piece 601 connected to both sides to widen the spacing between adjacent copper-clad laminates; the expansion piece 601 is wedge-shaped with the acute angle facing the insertion end of the separator 6.

[0033] It also includes a guide rod 501 and an elastic element 602; the guide rod 501 is installed inside the mounting box 5; all the partitions 6 on each mounting box 5 are slidably connected to the guide rod 501; an elastic element 602 is connected between adjacent partitions 6; the elastic element 602 is a spring; the elastic element 602 is sleeved with the guide rod 501.

[0034] The insert end of the separator 6 is tapered; this facilitates insertion between copper-clad laminates that are tightly attached together.

[0035] The rubber ring 22 is truncated cone-shaped so that the connecting beam 3 can be engaged with it from top to bottom during installation.

[0036] The connecting frame 4 is composed of L-shaped rod 1 401 and L-shaped rod 2 402; L-shaped rod 1 401 and L-shaped rod 2 402 are connected in a damped sliding manner in the vertical direction; the mounting box 5 is slidably connected to L-shaped rod 2 402; by making relative sliding between L-shaped rod 1 401 and L-shaped rod 2 402, the height of the mounting box 5 can be changed, thereby adjusting the relative position of the separator 6 and the copper-clad laminate.

[0037] The L-shaped rod 401 has a pointed cone-shaped insertion end, which facilitates insertion into the sliding groove 203.

[0038] The steps for using this invention are as follows:

[0039] First, the first connecting beam 3 located on the front side is lifted upwards to separate from and remove the rubber ring 22 of the connecting pin 21. Then, the worker places multiple copper-clad laminates (CCLs) with drilled holes on the front side of the invention. The CCLs rest against the second connecting beam 3, and the connecting beam 3 is supported and limited on both sides by two side beams 2. After ten CCLs are stacked, the worker reinstalls the first connecting beam 3, confining the CCLs between the two connecting beams 3. Next, the worker pushes the moving beam 202 backwards. Under the constraint of the connecting beam 3, as... Figure 4As shown, the frame composed of side beams 2, moving beams 202, and connecting beams 3 will deform, changing from a rectangle to a parallelogram. This deformation will cause the stacked copper-clad laminates to misalign their sides. Then, workers will remove a connecting bracket 4 and a mounting box 5 from each side beam 2, aligning the removed connecting bracket 4 and mounting box 5 with the left and right sides of the copper-clad laminate, respectively. The connecting bracket 4 will be inserted into the corresponding position of the slide groove 203. At this point, the wedge 403 is not fully inserted into the slide groove 203. Workers can move the connecting bracket 4 slightly to align the insertion ends of each separator 6 with the mating points of adjacent copper-clad laminates. Then, the insertion ends of the connecting bracket 4 will be fully pushed into the slide groove 203, and the wedge 403 will be simultaneously squeezed into the slide groove. 203, so that the connecting bracket 4 and the inner wall of the slide 203 form a friction lock (it should be noted that when removing the connecting bracket 4, the worker can normally pull the connecting bracket 4 out of the slide 203); then rotate the rotating pin 406 90 degrees, so that the direction of the major half-axis of the elliptical section of the rotating pin 406 is in the same direction as the length direction of the moving groove 405, the rotating pin 406 no longer presses the connecting sleeve 404 against the inner wall of the moving groove 405, and the connecting sleeve 404 can slide along the moving groove 405, then push the mounting box 5 towards the copper-clad board, the mounting box 5 slides relative to the connecting bracket 4, so that the separator 6 is squeezed into the corresponding copper-clad boards, separating the copper-clad boards, then rotate the rotating pin 406 90 degrees again, the elliptical section of the rotating pin 406 The semi-axial direction of the surface is perpendicular to the length direction of the moving groove 405. The rotating pin 406 then presses the connecting sleeve 404 against the inner wall of the moving groove 405, locking the relative position of the connecting sleeve 404 and the connecting frame 4, thereby fixing the position of the mounting box 5. The copper-clad laminates are separated, and the increased spacing causes the two connecting beams 3 to move away from each other. The connecting beams 3 drive the connecting pin 21 to slide on the side beam 2 and the moving beam 202. The rubber block 305 on the connecting beam 3 adapts to the expansion and contraction, changing the length of the connecting beam 3 to accommodate the positional change. Then, the moving beam 202 is moved forward to reset, causing the separated copper-clad laminates to return to the front side of the invention. At this time, the copper-clad laminates are separated and fixed by the separating piece 6. Then, remove the two connecting beams 3 on the front side and slide the connecting frames 4 on both sides of the copper-clad laminate backward along the slide groove 203. The connecting frames 4 drive the mounting box 5, the separator 6 and the copper-clad laminate to move backward to the middle of the invention. The front space is cleared, and then the second connecting beam 3 is reinstalled. Then, the next batch of copper-clad laminates is placed on the front side, and the separation operation is repeated in the above manner until five batches are operated. The invention reaches its maximum capacity. Then, the invention is hoisted onto a mobile trolley by hoisting equipment and transferred to the copper plating workshop. Then, the invention together with the separated copper-clad laminates is hoisted onto the mobile equipment of the copper plating line by hook. The mobile equipment drives the invention and the copper-clad laminates to be immersed in each chemical pool of the copper plating line in turn for copper plating treatment.

[0040] Different copper plating processes require different spacing between boards. Therefore, expansion plates 601 are provided on both sides of the separator 6. When the separator 6 is inserted between the copper-clad laminates, the deeper it is inserted, the more the expansion plate 601 is squeezed, which pushes each separator 6 to slide to both sides along the guide rod 501, separating adjacent separators 6 and thus separating adjacent copper-clad laminates more widely. This allows for adjustment of the spacing between the boards, making it more suitable for the corresponding copper plating process requirements. When adjacent separators 6 are far apart, the elastic element 602 will be stretched. When the separator 6 and expansion plate 601 are inserted to the appropriate depth and the copper-clad laminates are separated, the stretched elastic element 602 will generate a retraction force, which will apply a pulling force to the adjacent separators 6, so that the separators 6 and expansion plates 601 are tightly pressed against the copper-clad laminates on both sides, thereby achieving clamping and fixing, preventing the copper-clad laminates from shaking during movement, causing changes in the spacing between adjacent copper-clad laminates and affecting the penetration effect of the copper plating solution.

[0041] Since the height of the separator 6 is located in the middle of the copper-clad laminate, when the copper-clad laminate is thin and moves continuously between the chemical pools, the upper part of the copper-clad laminate is not fixed, and the thin laminate is prone to deformation and bending due to inertia and liquid flow impact. Therefore, the connecting frame 4 is designed to consist of two parts: L-shaped rod 1 401 and L-shaped rod 2 402, which can slide relative to each other. When the upper part of the copper-clad laminate is far from the current height of the separator 6, after the worker inserts the separator 6 between the copper-clad laminates, he pulls the mounting box 5 upward, which drives L-shaped rod 2 402 to move upward relative to L-shaped rod 1 401. This causes the mounting box 5 and the separator 6 to move upward, and the separator 6 to be closer to the upper part of the copper-clad laminate. While separating the copper-clad laminate, it can also support the upper part of the copper-clad laminate to prevent it from bending and deforming during movement. It should be noted that the copper-clad laminate is placed on the support rod 101, and its weight is borne by the support rod 101, thus ensuring good stability of the lower part of the copper-clad laminate.

[0042] In summary, the present invention has the following effects:

[0043] By first changing the relative positions of the copper-clad laminates that are close together, so that the sides of the adjacent copper-clad laminates are misaligned, and then by inserting the separator 6 between the adjacent copper-clad laminates, the copper-clad laminates are separated in batches and quickly. The separated copper-clad laminates are placed on the present invention. The present invention can directly carry the copper-clad laminates for copper plating operation. Compared with the copper-clad laminates being stacked together after drilling and needing to be manually separated and transferred to the copper plating line by workers before copper plating, which is cumbersome and inefficient, the present invention can not only support the copper-clad laminates, but also perform batch and rapid separation of the copper-clad laminates, and can directly carry the copper-clad laminates for copper plating, reducing unnecessary transfer operations and significantly improving the turnover efficiency between different processes.

[0044] Example 2: Based on Example 1, as follows Figure 1 , Figures 10-12As shown, the U-shaped frame 1 consists of two L-shaped blocks 102, a connecting plate 103 between the two L-shaped blocks 102, and a connecting plate 104 between the two L-shaped blocks 102; both the connecting plate 103 and the connecting plate 104 are slidably connected to the L-shaped blocks 102; the connecting plate 104 is fixedly connected to the support rod 101; the connecting beam 3 consists of two mounting blocks 301 and a connecting block 302 between the two mounting blocks 301; the mounting blocks 301 are slidably connected to the connecting blocks 302; and the connecting blocks 302 have openings on them. Several adjustment holes 303; a limit pin 304 is inserted into each mounting block 301; the limit pin 304 is adapted to the adjustment hole 303; a rubber block 305 is set in the middle of the connecting block 302; two locking pins 105 are slidably connected on the connecting plate 103; several locking grooves 106 are opened on each L-shaped block 102; the locking pins 105 are adapted to the locking grooves 106 to lock the relative position of the L-shaped block 102 and the connecting plate 103.

[0045] The insertion end of the 304 limiting pin is cone-shaped, which facilitates insertion.

[0046] The operation steps for using this embodiment are as follows:

[0047] For supporting small copper-clad laminates, firstly, pull out the limiting pins 304 on all mounting blocks 301, releasing the lock between mounting blocks 301 and connecting blocks 302, allowing them to slide relative to each other. Then, pull out the locking pins 105 away from the L-shaped block 102, separating them from the corresponding locking grooves 106, releasing the lock between the L-shaped block 102 and connecting plate 103. Then, fix the complete side beam 2 (left side), and push the side beam 2 (right side), which is divided into a fixed beam 201 and a moving beam 202, towards the left side beam 2, shortening the distance between them. During the pushing process, simultaneously push the right L-shaped block 102 to the left, and connecting plate 103 will retract into the right L-shaped block 102. Connecting plate 204 will also drive the support rod 101 to move to the left, thereby shortening the left and right distance of the U-shaped frame 1. At the same time, the right side... The beam 2 pushes the right mounting block 301 to the left, causing the connecting block 302 to retract into its interior, thereby shortening the length of the connecting beam 3. When the distance between the left and right sides of the present invention is adjusted to a suitable position, and the adjustment hole 303 on the connecting block 302 is aligned with the placement point of the upper limit pin 304 on the mounting block 301, the upper limit pin 304 is reinserted and passes through the corresponding adjustment hole 303, thereby locking the mounting block 301 and the connecting block 302, so that the connecting beam 3 cannot change its length. Then, the locking pin 105 is pushed back towards the L-shaped block 102 and inserted into the locking groove 106 corresponding to the adjusted position, locking the relative position of the L-shaped block 102 and the connecting plate 103. Finally, the distance between the left and right sides of the present invention is adjusted and fixed. Thus, the present invention can be adapted to the specifications of the copper-clad laminate by adjusting the size, which has good adaptability and strong practicality.

[0048] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of the invention. Therefore, the scope of the invention should be limited only by the appended claims.

Claims

1. A printed circuit board (PCB) production and processing rack, comprising two U-shaped frames (1); a plurality of support rods (101) for supporting copper-clad laminates are connected between the two U-shaped frames (1); characterized in that, It also includes side beams (2); two side beams (2) are connected between the two U-shaped frames (1); two connecting pins (21) are slidably connected to the same end of the two side beams (2); the top of the connecting pins (21) protrudes from the side beams (2); one of the side beams (2) is divided into a fixed beam (201) and a movable beam (202); the connecting pins (21) of the side beam (2) are located on the movable beam (202); the movable beam (202) contacts the top of the corresponding U-shaped frame (1); a rubber ring (22) is fixedly attached to the top of each connecting pin (21); a connecting beam is detachably installed between the two corresponding connecting pins (21) on the two side beams (2). 3) The other ends of the two side beams (2) are fixedly connected to another connecting beam (3); each connecting beam (3) is provided with an elastically retractable rubber block (305) in the middle; each side beam (2) is equipped with several connecting brackets (4); each side beam (2) is provided with a sliding groove (203); the connecting bracket (4) is inserted into the corresponding sliding groove (203); the insertion end of the connecting bracket (4) is fixedly connected with a wedge (403) for locking position; each connecting bracket (4) is slidably connected with a connecting locking unit; each connecting locking unit is connected to a mounting box (5); the mounting box (5) is equipped with several separators (6) for separating adjacent copper-clad laminates. The connection locking unit includes: a connecting sleeve (404) and a rotating pin (406); the connecting sleeve (404) is slidably connected to the connecting frame (4); the connecting sleeve (404) is fixedly connected to the mounting box (5); a moving groove (405) is provided on the connecting frame (4); the connecting sleeve (404) slides in the moving groove (405); the rotating pin (406) is rotatably connected to the middle of the connecting sleeve (404); the connecting sleeve (404) is deformable; the rotating pin (406) has an elliptical cross section; It also includes an expansion piece (601); each partition piece (6) has an expansion piece (601) connected to both sides; the expansion piece (601) is wedge-shaped with the acute angle facing the insertion end of the partition piece (6); It also includes a guide rod (501) and an elastic element (602); the guide rod (501) is installed in the mounting box (5); all the partitions (6) on each mounting box (5) are slidably connected to the guide rod (501); an elastic element (602) for adaptively adjusting the spacing is connected between adjacent partitions (6); the elastic element (602) is sleeved with the guide rod (501).

2. A printed circuit board production and processing rack according to claim 1, characterized in that, The insertion end of the separator (6) is tapered.

3. A printed circuit board production and processing rack according to claim 2, characterized in that, The rubber ring (22) is truncated cone-shaped.

4. A printed circuit board production and processing rack according to claim 3, characterized in that, The connecting frame (4) is composed of L-shaped rod one (401) and L-shaped rod two (402); L-shaped rod one (401) and L-shaped rod two (402) are connected in a damped sliding manner in the vertical direction; the mounting box (5) is slidably connected to L-shaped rod two (402).

5. A printed circuit board production and processing rack according to claim 4, characterized in that, The L-shaped rod (401) has a pointed cone-shaped insertion end.

6. A printed circuit board production and processing rack according to claim 4, characterized in that, The U-shaped frame (1) consists of L-shaped blocks (102) on both sides, a connecting plate one (103) in the middle, and a connecting plate two (104) in the middle; both connecting plate one (103) and connecting plate two (104) are slidably connected to the L-shaped blocks (102); the connecting plate two (104) is fixedly connected to the supporting rod (101); the connecting beam (3) consists of mounting blocks (301) on both sides and a connecting block (302) in the middle; the mounting blocks (301) and the connecting blocks (302) are slidably connected; the connecting blocks (301) and the connecting blocks (302) in the middle are slidably connected; the connecting blocks (301) and the connecting blocks (302) in the middle are slidably connected to the supporting rod (101); the connecting beam (301) consists of mounting blocks (301) on both sides and a connecting block (302) in the middle; the connecting blocks (301) and the connecting blocks (302) in the middle are slidably connected to the supporting rod (101); the connecting beam (301) consists of mounting blocks (301) on both sides and a connecting block (302) in the middle; the connecting blocks (301) and the connecting blocks (302) in the middle are slidably connected to the supporting rod (102 ... 2) Several adjustment holes (303) are provided on the upper part; a limit pin (304) is inserted into each mounting block (301); the limit pin (304) is adapted to the adjustment hole (303); the rubber block (305) is set in the middle of the connecting block (302); two locking pins (105) are slidably connected on the connecting plate (103); several locking grooves (106) are provided on each L-shaped block (102); the locking pins (105) are adapted to the locking grooves (106).

7. A printed circuit board production and processing rack according to claim 6, characterized in that, The insertion end of the limiting pin (304) is cone-shaped.

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