Circuit board micro-channel shaping jig

Abstract

The invention provides a circuit board micro-channel shaping jig, and relates to the technical field of integrated circuit manufacturing, the circuit board micro-channel shaping jig comprises a circuit board jig table, a support below the circuit board jig table is fixedly connected with an electric push cylinder, a push rod of the electric push cylinder is perpendicular to the lower surface of the circuit board jig table, and the upper end of the push rod of the electric push cylinder is fixedly connected with a lifting connecting cylinder; a circuit board lifting supporting table is movably connected above the center of the circuit board jig table, a supporting rod of the circuit board lifting supporting table vertically penetrates through and is connected with the circuit board jig table in a sliding mode, and four circuit board vertex angle clamping blocks synchronously move towards the center direction of the circuit board from the outer direction of the vertex angle of the circuit board and are synchronously attached to the four vertex angles of the circuit board. The circuit board is accurately fixed, the moving speed and progress of the four circuit board vertex angle clamping blocks are consistent, the positioning error of the circuit board is reduced, and the problems that the installation stability or the position precision of the circuit board is poor and the shaping precision of the micro-channel of the circuit board is affected due to the fact that errors are likely to occur in the actions of multiple sets of driving pieces are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated circuit manufacturing, and particularly to a circuit board microchannel shaping fixture. Background Art

[0002] Circuit board microchannel shaping refers to the process of manufacturing or modifying tiny channels on a circuit board, which are usually used for the transmission of liquids or gases and play a crucial role in the applications of microfluidic systems and microreactors. Common circuit board microchannel shaping methods include laser cutting, mechanical microfabrication, chemical etching, and heat shrink molding. In the laser cutting method, before microchannel shaping of the circuit board, it is necessary to fix the circuit board through fixtures and correctly place it at the set position on the operating table to ensure the laser shaping accuracy and avoid the fixture from shifting due to the vibration of the shaping device.

[0003] During the process of fixing the circuit board by traditional circuit board microchannel shaping fixtures and jigs, multiple sets of pushing structures are required to push the edge of the circuit board from multiple directions to achieve clamping. The multiple sets of pushing structures are driven by different driving components. For microchannel shaping processing with high-precision requirements, errors are likely to occur in the actions between multiple driving components, resulting in poor installation stability or position accuracy of the circuit board, affecting the circuit board microchannel shaping accuracy. During the installation or removal of the circuit board from the fixture, since the circuit board is thin and fits tightly with the surface of the table body, it is not easy to take it out. During the process of taking it out with the help of tools, the surface of the circuit board is easily scratched. Summary of the Invention

[0004] The present invention discloses a circuit board microchannel shaping fixture to solve the problems that during the process of fixing the circuit board by traditional circuit board microchannel shaping fixtures and jigs, multiple sets of pushing structures are required to push the edge of the circuit board from multiple directions to achieve clamping. The multiple sets of pushing structures are driven by different driving components. For microchannel shaping processing with high-precision requirements, errors are likely to occur in the actions between multiple driving components, resulting in poor installation stability or position accuracy of the circuit board, affecting the circuit board microchannel shaping accuracy. During the installation or removal of the circuit board from the fixture, since the circuit board is thin and fits tightly with the surface of the table body, it is not easy to take it out. During the process of taking it out with the help of tools, the surface of the circuit board is easily scratched.

[0005] In the first aspect of the present disclosure, a circuit board microchannel shaping fixture is provided, which specifically includes: a circuit board fixture table, a motorized push cylinder is fixedly connected to the bracket below the circuit board fixture table, the push rod of the motorized push cylinder is perpendicular to the lower surface of the circuit board fixture table, the upper end of the push rod of the motorized push cylinder is fixedly connected to a lifting connecting cylinder, the lifting connecting cylinder is a cylinder with an upward opening, a circuit board lifting support table is movably connected above the center of the circuit board fixture table, the support rod of the circuit board lifting support table vertically penetrates and is slidably connected to the circuit board fixture table, and the lower end of the support rod of the circuit board lifting support table is slidably connected inside the lifting connecting cylinder. The circuit board fixture table is provided with four table surface chutes, and a propulsion connecting plate is respectively slidably connected inside the four table surface chutes. The lower surface of the propulsion connecting plate is hinged with a connecting plate link rod, and the other end of the connecting plate link rod is hinged to the outer wall of the lifting connecting cylinder. A sliding push frame is installed above the propulsion connecting plate, a compensation chute is provided on the side of the sliding push frame facing the circuit board lifting support table, and four circuit board corner clamps are provided above the circuit board fixture table. The circuit board corner clamps are in an "L" shape structure, and a clamp guide rod is fixedly connected to the outer edge of the circuit board corner clamp. The clamp guide rod is slidably connected to the compensation chute.

[0006] Further, a connecting cylinder tension spring is fixedly connected to the upper end of the lifting connecting cylinder, a support rod outer ring is fixedly connected to the push rod of the circuit board lifting support table, the support rod outer ring is located below the circuit board fixture table, and the upper end of the connecting cylinder tension spring is fixedly connected to the lower surface of the support rod outer ring.

[0007] Further, a chute is provided on the side surface of the propulsion connecting plate, a convex strip is provided on the inner wall of the table surface chute, and the chute on the side surface of the propulsion connecting plate is slidably connected to the convex strip on the inner wall of the table surface chute.

[0008] Further, two connecting plate guide rails are provided on the upper surface of the propulsion connecting plate, the two connecting plate guide rails are parallel to each other, and the cross section of the connecting plate guide rail is in a "T" shape.

[0009] Further, the lower surface of the sliding push frame is attached to the upper surface of the propulsion connecting plate, two push frame sliders with a "T" shape structure are fixedly connected to the bottom of the sliding push frame, and the push frame sliders are slidably connected to the connecting plate guide rails.

[0010] Further, a push frame connecting plate is fixedly connected to the lower edge of the side of the sliding push frame away from the circuit board lifting support table, a bolt is rotatably connected in the middle of the push frame connecting plate, and the bottom of the bolt is in close contact with the upper surface of the propulsion connecting plate.

[0011] Further, the circuit board corner clamp is a hollow structure, the opening of the circuit board corner clamp faces the circuit board lifting support table, and a clamp wedge surface is processed on the upper edge of the opening of the circuit board corner clamp.

[0012] Furthermore, clamping block air ports are provided on both the opening surface and the wedge surface of the clamping block at the top corner of the circuit board. The clamping block air ports are communicated with the internal cavity of the clamping block at the top corner of the circuit board, and an air delivery connecting pipe is fixedly connected above the clamping block at the top corner of the circuit board.

[0013] Furthermore, the four table surface chutes are distributed in a "cross" shape around the circuit board jig table.

[0014] The present invention provides a circuit board microchannel shaping jig, which has the following beneficial effects: In the circuit board microchannel shaping jig of the present invention, through the cooperation of the same electric push cylinder with the lifting connecting cylinder, the connecting plate link rod, and the pushing connecting plate, the synchronous pushing of the four clamping blocks at the top corners of the circuit board is realized, so that the four clamping blocks at the top corners of the circuit board move synchronously from the outer position of the top corners of the circuit board towards the center direction of the circuit board, and synchronously fit the four top corners of the circuit board to accurately fix the circuit board. The moving speed and process of the four clamping blocks at the top corners of the circuit board are consistent, reducing the positioning error of the circuit board. Moreover, the circuit board is fixed by the method of top corner clamping, which has higher stability, can reduce the contact between the edge of the circuit board and the fixture, and reduce the wear of the fixture on the edge structure of the circuit board.

[0015] In addition, during the installation of the circuit board in the shaping jig of the present invention, in the initial state, the circuit board lifting platform is in the lifted state, and the distance between the four clamping blocks at the top corners of the circuit board is relatively large. After the circuit board is placed above the circuit board lifting platform, the electric push cylinder contracts to pull the lifting connecting cylinder downward, and under the action of the connecting cylinder tension spring, the circuit board lifting platform is pulled downward, so that the circuit board follows and sinks to the bottom center of the four clamping blocks at the top corners of the circuit board. As the electric push cylinder continuously pulls the lifting connecting cylinder downward, the connecting cylinder tension spring is stretched, and under the action of the connecting plate link rod, the four pushing connecting plates and the sliding push frames are pushed towards the center direction of the circuit board jig table, so that the four sliding push frames respectively push the four clamping blocks at the top corners of the circuit board to approach and fit the four top corners of the circuit board. When the shaping of the circuit board microchannel is completed, the electric push cylinder is controlled to slowly rise, and under the action of the connecting plate link rod, the pushing connecting plate and the sliding push frame are pushed outward, so that the four clamping blocks at the top corners of the circuit board move outward to release the clamping of the circuit board. And as the lifting connecting cylinder continues to move upward, after the connecting cylinder tension spring is completely contracted, the connecting cylinder tension spring pushes the circuit board lifting platform upward to push the circuit board upward by the circuit board lifting platform, so as to facilitate the operator to take the circuit board.

[0016] In addition, the four clamping blocks at the top corners of the circuit board are all connected with air delivery connecting pipes. The air delivery connecting pipes of the two clamping blocks at the top corners of the circuit board on the same side are connected to a cold air blower. The cold air blower conveys low-temperature air into the internal part of the clamping blocks at the top corners of the circuit board, and the low-temperature air is released through the clamping block air ports, so that the circuit board can be cooled to avoid the circuit board from deteriorating or burning under the influence of high-temperature laser. The air delivery connecting pipes of the other two clamping blocks at the top corners of the circuit board are connected to an exhaust fan, which can quickly inhale the smoke generated by laser shaping to avoid the smoke from affecting the laser beam or the sensitivity of the sensor. Brief Description of the Drawings

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

[0018] The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0019] In the accompanying drawings: Figure 1 A schematic diagram showing the overall structure of the present application is shown; Figure 2 A schematic diagram showing the structure of the bottom of the present application is shown; Figure 3 Shows the present application Figure 1 in a top view structural schematic diagram; Figure 4 A schematic diagram showing the structure of the present application when the circuit board is not clamped is shown; Figure 5 Shows the present application Figure 4 in a front view structural schematic diagram; Figure 6 A schematic diagram showing the structure of the present application after the circuit board sinks is shown; Figure 7 Shows the present application Figure 6 in a front view structural schematic diagram; Figure 8 A schematic diagram showing the structure of the present application in a fixed state of the circuit board is shown; Figure 9 Shows the present application Figure 8 in a front view structural schematic diagram; Figure 10 A schematic diagram showing the structure of the corner clamping block of the circuit board of the present application is shown; Figure 11 A schematic diagram showing the structure of the present application in a disassembled state of the propulsion connection board and the sliding push frame is shown; Figure 12 Shows the present application Figure 5 in a partially enlarged structural schematic diagram at position A; Figure 13 Shows the present application Figure 7 in a partially enlarged structural schematic diagram at position B; Figure 14 Shows the present application Figure 9 in a partially enlarged structural schematic diagram at position C.

[0020] List of Reference Numerals 1. Circuit board jig table; 101. Table surface chute; 2. Electric push cylinder; 3. Lifting connecting cylinder; 301. Connecting cylinder tension spring; 4. Circuit board lifting support table; 401. Outer ring of support rod; 5. Pushing connecting plate; 501. Connecting plate connecting rod; 502. Connecting plate guide rail; 6. Sliding pushing frame; 601. Pushing frame slider; 602. Pushing frame connecting plate; 603. Compensation chute; 7. Circuit board top corner clamping block; 701. Clamping block guide rod; 702. Clamping block wedge surface; 703. Clamping block air port; 8. Air delivery connecting pipe. Specific implementation mode

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1 to 14 : The present invention provides a circuit board microchannel shaping jig, comprising: a circuit board jig table 1, a bracket below the circuit board jig table 1 is fixedly connected with an electric push cylinder 2, the push rod of the electric push cylinder 2 is perpendicular to the lower surface of the circuit board jig table 1, the upper end of the push rod of the electric push cylinder 2 is fixedly connected with a lifting connecting cylinder 3, the lifting connecting cylinder 3 is a cylinder with an upward opening, a circuit board lifting support table 4 is movably connected above the center of the circuit board jig table 1, the support rod of the circuit board lifting support table 4 vertically penetrates and is slidably connected to the circuit board jig table 1, the lower end of the support rod of the circuit board lifting support table 4 is slidably connected inside the lifting connecting cylinder 3, the circuit board jig table 1 is provided with four table surface sliding grooves 101, the four table surface sliding grooves 101 are distributed in a "cross" shape around the circuit board jig table 1, and a propulsion connecting plate 5 is respectively slidably connected inside the four table surface sliding grooves 101, the lower surface of the propulsion connecting plate 5 is hinged with a connecting plate link 501, the other end of the connecting plate link 501 is hinged with the outer wall of the lifting connecting cylinder 3, a sliding push frame 6 is installed above the propulsion connecting plate 5, a compensation sliding groove 603 is opened on the side of the sliding push frame 6 facing the circuit board lifting support table 4, four circuit board corner clamping blocks 7 are arranged above the circuit board jig table 1, the circuit board corner clamping blocks 7 are in an "L" shape structure, a clamping block guide rod 701 is fixedly connected to the outer edge of the circuit board corner clamping blocks 7, and the clamping block guide rod 701 is slidably connected with the compensation sliding groove 603; in the no-load state of the shaping jig, the push rod of the electric push cylinder 2 is in an extended state, the lifting connecting cylinder 3 is lifted, and under the action of a connecting cylinder tension spring 301, the circuit board lifting support table 4 is lifted, so that the circuit board lifting support table 4 is higher than the upper surface of the circuit board corner clamping blocks 7. After a circuit board is placed above the circuit board lifting support table 4, the electric push cylinder 2 is controlled to contract, the lifting connecting cylinder 3 is pulled downward, the circuit board lifting support table 4 slides downward under its own gravity to fit the circuit board jig table 1, so that the circuit board sinks to be lower than the upper surface of the circuit board corner clamping blocks 7. As the lifting connecting cylinder 3 drops, the connecting cylinder tension spring 301 is stretched, and under the action of the connecting plate link 501, the four propulsion connecting plates 5 and the sliding push frame 6 are pushed towards the direction close to the center of the circuit board jig table 1, so that the four sliding push frames 6 respectively push the four circuit board corner clamping blocks 7 to approach and fit the four corners of the circuit board, realizing the clamping and alignment of the circuit board, and the circuit board can be laser-shaped by a laser shaping device.

[0023] In the embodiment of the present disclosure, the upper end of the lifting connecting cylinder 3 is fixedly connected with a connecting cylinder tension spring 301, a support rod outer ring 401 is fixedly connected to the push rod of the circuit board lifting support table 4, the support rod outer ring 401 is located below the circuit board jig table 1, and the upper end of the connecting cylinder tension spring 301 is fixedly connected to the lower surface of the support rod outer ring 401; the sliding connection between the lifting connecting cylinder 3 and the circuit board lifting support table 4 plays a guiding role, the lifting and lowering of the circuit board lifting support table 4 are controlled by the lifting connecting cylinder 3, the circuit board is lifted or sunk, which is convenient for the installation and removal of the circuit board, and avoids the situation that when the circuit board is installed or removed in the fixture, it is closely attached to the table surface due to the thinness of the circuit board and is not easy to take.

[0024] In the embodiment of the present disclosure, a chute is provided on the side surface of the propulsion connecting plate 5, and a convex strip is provided on the inner wall of the table chute 101. The chute on the side surface of the propulsion connecting plate 5 is slidably connected to the convex strip on the inner wall of the table chute 101, which plays a guiding role to prevent the propulsion connecting plate 5 from deviating when moving.

[0025] Embodiment 2, based on Embodiment 1, referring to Figures 10 to 11 , two connecting plate guide rails 502 are provided on the upper surface of the propulsion connecting plate 5. The two connecting plate guide rails 502 are parallel to each other, and the cross-section of the connecting plate guide rail 502 is in a "T" shape; the lower surface of the sliding push frame 6 is attached to the upper surface of the propulsion connecting plate 5. Two "T"-shaped push frame sliders 601 are fixedly connected to the bottom of the sliding push frame 6, and the push frame sliders 601 are slidably connected to the connecting plate guide rails 502; a push frame connecting plate 602 is fixedly connected to the lower edge of the side of the sliding push frame 6 away from the circuit board lifting support 4. A bolt is rotatably connected in the middle of the push frame connecting plate 602, and the bottom of the bolt is in close contact with the upper surface of the propulsion connecting plate 5; the sliding push frame 6 is fixed above the propulsion connecting plate 5 by the friction force between the bottom of the bolt and the upper surface of the sliding push frame 6. For circuit boards of different sizes, the position of the propulsion connecting plate 5 can be adjusted by loosening the bolt to adapt to circuit boards of different sizes.

[0026] Embodiment 3, based on Embodiment 1, referring to Figure 10 , the circuit board corner clamp 7 is of a hollow structure. The opening of the circuit board corner clamp 7 faces the circuit board lifting support 4, and a clamp wedge surface 702 is processed on the upper edge of the opening of the circuit board corner clamp 7; clamp air ports 703 are provided on both the opening surface and the clamp wedge surface 702 of the circuit board corner clamp 7. The clamp air ports 703 communicate with the internal cavity of the circuit board corner clamp 7. An air supply connecting pipe 8 is fixedly connected above the circuit board corner clamp 7. Four circuit board corner clamps 7 are all connected to the air supply connecting pipe 8. The air supply connecting pipes 8 of the two circuit board corner clamps 7 on the same side are connected to a cold air blower. By supplying low-temperature air into the circuit board corner clamp 7 through the cold air blower and discharging the low-temperature air through the clamp air ports 703, the circuit board can be cooled to prevent the circuit board from deteriorating or burning under the influence of high-temperature laser. The air supply connecting pipes 8 of the other two circuit board corner clamps 7 are connected to an exhaust fan, which can quickly suck in the smoke generated by laser shaping, prevent the smoke from affecting the sensitivity of the sensors of the shaping equipment, and prevent the smoke from blocking the laser beam.

[0027] Working principle of this embodiment: First, when fixing the circuit board, place the circuit board flat in the middle above the circuit board lifting platform 4, and then remotely control the electric push cylinder 2 to contract, pulling the lifting connecting cylinder 3 downward. The circuit board lifting platform 4 slides downward under its own gravity to fit the circuit board jig table 1, causing the circuit board to sink below the upper surface of the circuit board corner clamp 7. As the lifting connecting cylinder 3 drops, the connecting cylinder tension spring 301 stretches, and under the action of the board connecting link 501, the four-way push board 5 and the sliding push frame 6 are pushed towards the center of the circuit board jig table 1, so that the four sliding push frames 6 respectively push the four circuit board corner clamps 7 to approach and fit the four corners of the circuit board, realizing clamping and alignment of the circuit board. The circuit board is shaped through laser shaping. During the shaping process, low-temperature air is conveyed into the two circuit board corner clamps 7 through the cold air blower and released through the clamp air port 703 to cool the circuit board, avoiding deterioration or burning of the circuit board under the influence of high-temperature laser. The exhaust fan is connected to the other two circuit board corner clamps 7 through the air conveying connecting pipe 8 to extract the smoke around the circuit board, avoiding the influence of the smoke on the laser beam or the sensitivity of the sensor. When the shaping is completed, control the electric push cylinder 2 to slowly rise, and through the action of the board connecting link 501, push the push board 5 and the sliding push frame 6 outward, so that the four circuit board corner clamps 7 move outward, releasing the clamping of the circuit board. As the lifting connecting cylinder 3 continues to move upward, after the connecting cylinder tension spring 301 is completely contracted, the connecting cylinder tension spring 301 pushes the circuit board lifting platform 4 upward, pushing the circuit board upward through the circuit board lifting platform 4 to be higher than the upper surface of the circuit board corner clamp 7 for easy taking of the circuit board.

[0028] In this article, the following points need attention: 1. The attached drawings of the embodiments of this disclosure only relate to the structures involved in the embodiments of this disclosure, and other structures can refer to the general design.

[0029] 2. Without conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] The above is only the specific implementation manner of this disclosure, but the protection scope of this disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by this disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be subject to the protection scope of the claims.

Claims

1. A circuit board microchannel shaping fixture, comprising: Circuit board fixture table (1), a motorized push cylinder (2) is fixedly connected to the bracket below the circuit board fixture table (1), characterized in that the push rod of the motorized push cylinder (2) is perpendicular to the lower surface of the circuit board fixture table (1), the upper end of the push rod of the motorized push cylinder (2) is fixedly connected to a lifting connecting cylinder (3), the lifting connecting cylinder (3) is a cylinder with an upward opening, a circuit board lifting support table (4) is movably connected above the center of the circuit board fixture table (1), the support rod of the circuit board lifting support table (4) vertically penetrates and is slidably connected to the circuit board fixture table (1), and the lower end of the support rod of the circuit board lifting support table (4) is slidably connected inside the lifting connecting cylinder (3). The circuit board fixture table (1) is provided with four tabletop chutes (101) penetratingly, and a propulsion connecting plate (5) is slidably connected to each of the four tabletop chutes (101). A connecting plate link (501) is hinged to the lower surface of the propulsion connecting plate (5), and the other end of the connecting plate link (501) is hinged to the outer wall of the lifting connecting cylinder (3). A sliding push frame (6) is installed above the propulsion connecting plate (5). A compensation chute (603) is provided on the side of the sliding push frame (6) facing the circuit board lifting support table (4). There are four circuit board corner clamping blocks (7) above the circuit board fixture table (1). The circuit board corner clamping blocks (7) are in an "L" shape structure, and a clamping block guide rod (701) is fixedly connected to the outer edge of the circuit board corner clamping blocks (7). The clamping block guide rod (701) is slidably connected to the compensation chute (603).

2. The circuit board microchannel shaping fixture according to claim 1, characterized in that A connecting cylinder tension spring (301) is fixedly connected to the upper end of the lifting connecting cylinder (3), a support rod outer ring (401) is fixedly connected to the push rod of the circuit board lifting support table (4), the support rod outer ring (401) is located below the circuit board fixture table (1), and the upper end of the connecting cylinder tension spring (301) is fixedly connected to the lower surface of the support rod outer ring (401).

3. The circuit board microchannel shaping fixture according to claim 1, characterized in that A chute is provided on the side surface of the propulsion connecting plate (5), a convex strip is provided on the inner wall of the tabletop chute (101), and the chute on the side surface of the propulsion connecting plate (5) is slidably connected to the convex strip on the inner wall of the tabletop chute (101).

4. The circuit board microchannel shaping fixture according to claim 1, characterized in that Two connecting plate guide rails (502) are provided on the upper surface of the propulsion connecting plate (5). The two connecting plate guide rails (502) are parallel to each other, and the cross-section of the connecting plate guide rails (502) is in a "T" shape.

5. The circuit board microchannel shaping fixture according to claim 4, characterized in that The lower surface of the sliding push frame (6) is attached to the upper surface of the propulsion connecting plate (5). Two push frame sliders (601) with a "T" shape structure are fixedly connected to the bottom of the sliding push frame (6), and the push frame sliders (601) are slidably connected to the connecting plate guide rails (502).

6. The circuit board microchannel shaping fixture according to claim 5, characterized in that One side lower edge of the sliding push frame (6) away from the circuit board lifting support (4) is fixedly connected with a push frame connecting plate (602). A bolt is rotatably connected in the middle of the push frame connecting plate (602), and the bottom of the bolt is in close fit with the upper surface of the propulsion connecting plate (5).

7. A circuit board microchannel shaping fixture according to claim 1, wherein The circuit board corner clamping block (7) is of a hollow structure. The opening of the circuit board corner clamping block (7) faces the circuit board lifting support (4), and a clamping block wedge surface (702) is machined on the upper edge of the opening of the circuit board corner clamping block (7).

8. A circuit board microchannel shaping fixture according to claim 8, wherein Clamping block air ports (703) are provided on both the opening surface of the circuit board corner clamping block (7) and the surface of the clamping block wedge surface (702). The clamping block air ports (703) communicate with the internal cavity of the circuit board corner clamping block (7), and an air delivery connecting pipe (8) is fixedly connected above the circuit board corner clamping block (7).

9. A circuit board microchannel shaping fixture according to claim 1, wherein The four table surface chutes (101) are distributed in a "cross" shape around the circuit board fixture table (1).

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