Turnover device for circuit board processing

Abstract

The utility model discloses a turnover device for circuit board processing, and relates to the technical field of circuit board processing. The circuit board overturning device comprises a workbench, an overturning assembly used for overturning a circuit board is arranged in the center of the top of the workbench, and supporting assemblies used for supporting the circuit board are arranged at the front end and the rear end of the top of the workbench. The overturning assembly comprises a first mounting frame movably connected to the center position of the top of the workbench through a one-way lead screw. A driving gear on a third sliding block drives an L-shaped frame and a sponge suction cup to rotate, so that it is guaranteed that the sponge suction cup is always adsorbed to the lower surface of a circuit board, and the problem that in the prior art, it is difficult to avoid that a fixing structure affects circuit board machining is solved; the supporting plate abuts against the periphery of the lower surface of the circuit board, and the problem that in the prior art, the circuit board is inconvenient to support when being machined is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of circuit board processing, especially relates to a turnover device for circuit board processing. BACKGROUND

[0002] Circuit board is a kind of common electronic equipment, makes circuit miniaturization, intuition, and plays an important role to the batch production of fixed circuit and the optimization of electric appliance layout, is generally also called printed wiring board or printed circuit board, and in the production and processing of circuit board, in order to facilitate the multi-surface processing of circuit board turnover, the turnover device is usually used;

[0003] The document with the authorized announcement number CN118695484B discloses a kind of turnover device for circuit board processing, including I-shaped base, one side of the top of I-shaped base is fixedly connected with support column, the other side of the top of I-shaped base is provided with lifting mechanism, the top of lifting mechanism is fixedly connected with processing table, the top of processing table is fixedly connected with turnover support frame, one side of turnover support frame is provided with first motor, the other side of turnover support frame is provided with fixed mechanism;Longitudinal adjusting mechanism, longitudinal adjusting mechanism includes fixed rod fixed in the output end of first motor, connecting rod is slidably connected in the inside of fixed rod, limit hole is formed in the inner wall of connecting rod;

[0004] But it still has the following disadvantages in actual use:

[0005] 1, the turnover device in the above, its fixed mechanism includes installation clamping plate, threaded rod, turntable and limit disc, installation clamping plate is clamped to circuit board by threaded rod, but in the process of use, since the existence of installation clamping plate will cause a part of surface of circuit board to be shielded, to affect the processing of circuit board;

[0006] 2, the turnover device in the above, circuit board is fixed on turnover support frame by fixed mechanism, and turnover support frame is driven to turn by first motor, to realize the turnover of circuit board, but when processing circuit board, most of the area of circuit board is in the state of suspension, lacks supporting structure, so that circuit board is prone to breakage in the processing.

[0007] Therefore, we provide a kind of turnover device for circuit board processing to solve the problems in the above. Utility model content

[0008] The utility model discloses a purpose lies in providing a kind of turnover device for circuit board processing, third sliding block on the driving gear of being driven L type frame and sponge suction cup rotation, to guarantee that sponge suction cup is always adsorbed on the lower surface of circuit board, the problem that existing technology is difficult to avoid fixed structure to influence circuit board processing is solved, second electric push rod is driven simultaneously to support plate and is lifted, so that support plate is in contact with the lower surface of circuit board around, the problem that existing technology is not convenient for supporting when circuit board processing is solved.

[0009] To solve the above technical problems, the utility model is realized through the following technical schemes:

[0010] The utility model discloses a kind of turnover device for circuit board processing, including workbench, the top center position of workbench is provided with the turnover assembly for overturning circuit board, the top front and rear end of workbench is provided with the support assembly for supporting circuit board;

[0011] Turnover assembly includes the first installation frame that is movably connected in the top center position of workbench by one-way screw rod, the top two sides of first installation frame are movably connected with mounting post by first bidirectional screw rod, the upper side of one end of mounting post mutually close is rotatably connected with the rotary disc for overturning circuit board, the side away from rotary disc of mounting post is movably connected with second installation frame, the side away from rotary disc of second installation frame is movably connected with third sliding block in front and rear end, the top and bottom of third sliding block are movably connected with second drive motor by second motor frame, drive gear is sleeved on the output shaft of second drive motor, the side of third sliding block located in the outside of second installation frame is rotatably connected with L type frame, the side close to third sliding block of L type frame is movably connected with the outer gear ring that is mutually engaged with drive gear, the bottom of horizontal support arm of L type frame is movably connected with first electric push rod, the output shaft of first electric push rod is movably connected with movable plate, the upper surface of movable plate is movably connected with sponge suction cup;

[0012] Support assembly includes the third bidirectional screw rod that is rotatably connected in the inside two sides of workbench, fourth sliding block is threadedly sleeved in the front and rear end of the outer wall of third bidirectional screw rod, the top of fourth sliding block is movably connected with third installation frame, the inside of third installation frame is rotatably connected with fourth bidirectional screw rod, the center position of the outer wall of fourth bidirectional screw rod is movably connected with screw cap, the two sides of the outer wall of fourth bidirectional screw rod are threadedly sleeved with fifth sliding block, the top of fifth sliding block is movably connected with second electric push rod, the output shaft of second electric push rod is movably connected with connecting plate, the upper side of connecting plate is movably connected with support plate.

[0013] The utility model further provides: one-way screw rod is rotatably connected in the top two sides of workbench, first sliding block is threadedly sleeved on the outer wall of one-way screw rod, the top of first sliding block is movably connected in the bottom two sides of first installation frame.

[0014] The further setting of the utility model discloses: the front end of one-way screw rod is fixedly connected with first hand wheel, the rear end of one-way screw rod is fixedly connected with first synchronous wheel, and first synchronous wheel is driven in connection through first synchronous belt between first synchronous wheel.

[0015] The further setting of the utility model discloses: first bidirectional screw rod is rotatably connected in the inside of first mounting frame, and the both ends of first bidirectional screw rod are fixedly connected with second hand wheel, and the both sides of the outer wall of first bidirectional screw rod are fixedly connected with second sliding block of screw thread cover, and the bottom end of mounting column is fixedly connected in the top of second sliding block.

[0016] The further setting of the utility model discloses: the upper outer wall of mounting column is rotatably penetrated with mounting rod, and the outer wall of one end of mounting rod is fixedly connected on the one side of rotary disc near mounting column, and the lower outer wall of mounting column is fixedly connected with first drive motor through first motor frame, and the both ends of mounting rod are fixedly connected with second synchronous wheel of output shaft of first drive motor, and second synchronous wheel is driven in connection through second synchronous belt between second synchronous wheel.

[0017] The further setting of the utility model discloses: the inside of second mounting frame is rotatably connected with second bidirectional screw rod, and the front and rear ends of second bidirectional screw rod extend to the front and rear ends of the outside of second mounting frame and are fixedly connected with third hand wheel, and third sliding block is respectively fixedly connected with the outer wall of second bidirectional screw rod of screw thread cover.

[0018] The further setting of the utility model discloses: the rear end of third bidirectional screw rod is rotatably connected on the both sides of the rear end of the inside of workbench, and the front end of third bidirectional screw rod extends to the front end of workbench and is fixedly connected with fourth hand wheel, and the outer wall center position of third bidirectional screw rod is fixedly connected with third synchronous wheel, and third synchronous wheel is driven in connection through third synchronous belt between third synchronous wheel.

[0019] The further setting of the utility model discloses: the lower surface center position of support plate is fixedly connected with buffer spring, and the bottom end of buffer spring is fixedly connected on the upper surface center position of connecting plate, and the lower surface of support plate is fixedly connected with connecting rod, and the bottom end of connecting rod is rotatably penetrated on the surface of connecting plate and is fixedly connected with limiting plate, and limiting plate is located in the lower surface of support plate.

[0020] The utility model has the advantages of the following:

[0021] 1. The utility model discloses a turnover assembly is set up, and after the circuit board overturns, closes the sponge suction cup and starts the first electric push rod, and the output shaft of first electric push rod drives the sponge suction cup to move through the movable plate, makes the sponge suction cup separate from the circuit board, and then starts the second drive motor, and the output shaft of second drive motor drives the drive gear to rotate, and the drive gear drives L type frame to rotate through the external gear ring, thereby making L type frame drive the sponge suction cup to rotate, make the sponge suction cup always be located below the circuit board, avoid the existence of the sponge suction cup to influence the processing of circuit board, and the processing of circuit board is facilitated.

[0022] 2. The utility model discloses a support assembly is set up, and the support plate is moved to the specified position in longitudinal and horizontal direction respectively through third two -way screw rod and fourth two -way screw rod, and then starts the second electric push rod, and the output shaft of second electric push rod drives the support plate to go up and down through the connecting plate, and then makes the support plate respectively and touches the lower surface of circuit board all around, realizes the support of circuit board, avoids the fracture of circuit board in the processing because of external force, and the processing of circuit board is facilitated. DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduces.

[0024] Figure 1 It is the whole structure schematic diagram of the utility model.

[0025] Figure 2 It is the structure schematic diagram of the utility model turnover assembly.

[0026] Figure 3 It is the installation schematic diagram of the utility model first installation frame.

[0027] Figure 4 It is the structure disassembly drawing of the utility model rotary disc and second installation frame.

[0028] Figure 5 It is the structure disassembly drawing of the utility model third sliding block, L type frame and sponge suction cup.

[0029] Figure 6 It is the structure schematic diagram of the utility model support assembly.

[0030] Figure 7 It is the installation schematic diagram of the utility model third two -way screw rod and third installation frame.

[0031] Figure 8 It is the structure disassembly drawing of the utility model support plate.

[0032] In the drawing, the component list of each sign is as follows:

[0033] 1-workbench, 2-flip assembly, 201-first mounting frame, 202-uni-directional screw rod, 202a-first sliding block, 202b-first hand wheel, 202c-first synchronous wheel, 202d-first synchronous belt, 203-bi-directional screw rod, 203a-second hand wheel, 203b-second sliding block, 204-mounting column, 205-rotary disc, 205a-mounting rod, 205b-second synchronous wheel, 205c-first motor frame, 205d-first drive motor, 205e-second synchronous belt, 206-second mounting frame, 206a-second bi-directional screw rod, 206b-third hand wheel, 207-third sliding block, 207a-second motor frame, 207b-second drive motor, 207c-driving gear, 208-L-shaped frame, 208a-outer gear ring, 209-sponge suction cup, 209a-first electric push rod, 209b-moving plate, 3-supporting assembly, 301-third bi-directional screw rod, 301a-fourth sliding block, 301b-fourth hand wheel, 301c-third synchronous wheel, 301d-third synchronous belt, 302-third mounting frame, 303-fourth bi-directional screw rod, 303a-fifth sliding block, 303b-rotating cap, 304-second electric push rod, 305-supporting plate, 305a-connecting plate, 305b-buffering spring, 305c-connecting rod, 305d-limiting plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0035] Embodiment 1

[0036] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , which is the first embodiment of the utility model, and the embodiment provides a flip device for circuit board processing, which comprises a workbench 1, and a flip assembly 2 arranged at the top center position of the workbench 1 and used for flipping a circuit board, the flip assembly 2 comprises a first mounting frame 201, a uni-directional screw rod 202, a first bi-directional screw rod 203, a mounting column 204, a rotary disc 205, a second mounting frame 206, a third sliding block 207, an L-shaped frame 208 and a sponge suction cup 209, the L-shaped frame 208 and the sponge suction cup 209 are driven to rotate through the driving gear 207c on the third sliding block 207, so that the sponge suction cup 209 is always adsorbed on the lower surface of the circuit board, and the problem that the fixing structure of the prior art affects the processing of the circuit board cannot be avoided.

[0037] Specifically, the first mounting frame 201 is movably connected to the top center of the workbench 1 via a one-way lead screw 202. Mounting posts 204 are movably connected to both sides of the top of the first mounting frame 201 via first two-way lead screws 203. A rotating disk 205 for flipping the circuit board is rotatably connected above the ends of the mounting posts 204 that are close to each other. A second mounting frame 206 is fixedly connected to the side of the rotating disk 205 away from the mounting posts 204. A third slider 207 is movably connected to the front and rear ends of the side of the second mounting frame 206 away from the rotating disk 205. The top and bottom of the third slider 207 are connected via a second motor frame 207a. A second drive motor 207b is fixedly connected. A drive gear 207c is sleeved on the output shaft of the second drive motor 207b. An L-shaped frame 208 is rotatably connected to one side of the third slider 207 located outside the second mounting frame 206. An external gear ring 208a, meshing with the drive gear 207c, is fixedly connected to the side of the L-shaped frame 208 near the third slider 207. A first electric push rod 209a is fixedly connected to the bottom of the transverse support arm of the L-shaped frame 208. A movable plate 209b is fixedly connected to the output shaft of the first electric push rod 209a. A sponge suction cup 209 is fixedly connected to the upper surface of the movable plate 209b. The mounting frame 201 is used to install structures such as the mounting column 204. The one-way screw 202 is used to adjust the position of the first mounting frame 201 on the worktable 1. The first two-way screw 203 is used to movably mount the mounting column 204 on the first mounting frame 201 and drive the first mounting frame 201 to move. The mounting column 204 is used to install the rotating disk 205. The rotating disk 205 is used to drive the second mounting frame 206 to rotate. The second mounting frame 206 is used to install the third slider 207. The third slider 207 is used to mount the L-shaped frame 2. The structure is installed in sections 08, etc. The first motor frame 205c is used to install the first drive motor 205d. The first drive motor 205d is used to drive the drive gear 207c to rotate. The drive gear 207c and the external gear ring 208a are used to drive the L-shaped frame 208 to rotate. The L-shaped frame 208 is used to install the sponge suction cup 209 and other structures. The sponge suction cup 209 is used to adsorb the circuit board. The first electric push rod 209a and the movable plate 209b are used to install the sponge suction cup 209 and drive the sponge suction cup 209 to move.

[0038] Furthermore, the one-way lead screws 202 are rotatably connected to the top two sides of the workbench 1, and the outer walls of the one-way lead screws 202 are threaded with first sliders 202a, the tops of the first sliders 202a are fixedly connected to the bottom two sides of the first mounting frame 201.

[0039] The front end of the one-way lead screw 202 is fixedly connected to a first handwheel 202b, and the rear end of the one-way lead screw 202 is fixedly connected to a first synchronous pulley 202c. The first synchronous pulleys 202c are connected to each other by a first synchronous belt 202d.

[0040] The first bidirectional lead screw 203 is rotatably connected inside the first mounting frame 201. Both ends of the first bidirectional lead screw 203 are fixedly connected to the second handwheel 203a. The outer walls of the first bidirectional lead screw 203 are threaded with the second slider 203b. The top of the second slider 203b is fixedly connected to the bottom of the mounting column 204.

[0041] A mounting rod 205a is rotatably passed through the upper part of the outer wall of the mounting column 204. One end of the mounting rod 205a is fixedly connected to the outer wall of the rotating disk 205 near the mounting column 204. A first drive motor 205d is fixedly connected to the lower part of the outer wall of the mounting column 204 through a first motor frame 205c. The output shaft of the first drive motor 205d and the other end of the mounting rod 205a are both fitted with second synchronous pulleys 205b. The second synchronous pulleys 205b are connected to each other through a second synchronous belt 205e.

[0042] The second mounting frame 206 is rotatably connected to the second bidirectional lead screw 206a. The front and rear ends of the second bidirectional lead screw 206a extend to the front and rear ends of the outer side of the second mounting frame 206 and are fixedly connected to the third handwheel 206b. The third slider 207 is threaded onto the front and rear ends of the outer wall of the second bidirectional lead screw 206a.

[0043] The operation process of this embodiment is as follows: Rotating the second handwheel 203a and the third handwheel 206b causes the first bidirectional lead screw 203 and the second bidirectional lead screw 206a to drive the mounting post 204 and the third slider 207 to move, thereby making the distance between the sponge suction cups 209 reach a preset value. Then, the circuit board is placed on the sponge suction cups 209, and a vacuum pump is connected to the sponge suction cups 209 to fix the circuit board and process it. When it is necessary to flip the circuit board, the first drive motor 205d is started. The output shaft of the first drive motor 205d drives the mounting rod 205a and the rotating disk 205 to rotate via the second synchronous belt 205e. The rotating disk 205 then... The second mounting frame 206 causes the circuit board to flip. After the circuit board flips, the sponge suction cup 209 is closed and the first electric push rod 209a is activated. The output shaft of the first electric push rod 209a drives the sponge suction cup 209 to move through the movable plate 209b, causing the sponge suction cup 209 to separate from the circuit board. Then, the second drive motor 207b is activated. The output shaft of the second drive motor 207b drives the drive gear 207c to rotate. The drive gear 207c drives the L-shaped frame 208 to rotate through the external gear ring 208a, thereby causing the L-shaped frame 208 to drive the sponge suction cup 209 to rotate, so that the sponge suction cup 209 is always located below the circuit board. At the same time, the sponge suction cup 209 is used to adsorb and fix the circuit board again.

[0044] Example 2

[0045] Please see Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: the front and rear ends of the top of the workbench 1 are provided with support components 3 for supporting the circuit board. The support components 3 include a third bidirectional lead screw 301, a third mounting frame 302, a fourth bidirectional lead screw 303, a second electric push rod 304, and a support plate 305. The second electric push rod 304 drives the support plate 305 to rise and fall, so that the support plate 305 abuts against the lower surface of the circuit board around the perimeter, which solves the problem that the prior art is not convenient to support the circuit board during processing.

[0046] Specifically, two third bidirectional lead screws 301 are provided and rotatably connected to the inner sides of the worktable 1 respectively. The outer walls of the third bidirectional lead screws 301 are threaded with fourth sliders 301a at both ends. A third mounting frame 302 is fixedly connected to the top of the fourth sliders 301a. A fourth bidirectional lead screw 303 is rotatably connected inside the third mounting frame 302. A nut 303b is fitted at the center of the outer wall of the fourth bidirectional lead screw 303. Fifth sliders 303a are threaded on both sides of the outer wall of the fourth bidirectional lead screw 303. A second electric push rod 304 is fixedly connected to the top of each fifth slider 303a. A connecting plate 305a is fixedly connected to the output shaft of the second electric push rod 304. A support plate 305 is movably connected above 305a. The third bidirectional lead screw 301 and the fourth slider 301a are used to drive the third mounting frame 302 to move. The third mounting frame 302 is used to install the fourth bidirectional lead screw 303 and other structures. The fourth bidirectional lead screw 303 and the fifth slider 303a are used to install the second electric push rod 304 and adjust the distance between the second electric push rods 304. The second electric push rod 304 is used to drive the support plate 305 to rise and fall. The support plate 305 is used to support the circuit board. The connecting plate 305a is used to connect the support plate 305 and the second electric push rod 304.

[0047] The rear end of the third bidirectional lead screw 301 is rotatably connected to both sides of the rear end inside the worktable 1. The front end of the third bidirectional lead screw 301 extends to the front end of the worktable 1 and is fixedly connected to the fourth handwheel 301b. The third synchronous wheel 301c is sleeved at the center of the outer wall of the third bidirectional lead screw 301. The third synchronous wheels 301c are connected to each other by a third synchronous belt 301d.

[0048] A buffer spring 305b is fixedly connected to the center of the lower surface of the support plate 305. The bottom end of the buffer spring 305b is fixedly connected to the center of the upper surface of the connecting plate 305a. Connecting rods 305c are fixedly connected to all four sides of the lower surface of the support plate 305. The bottom end of the connecting rod 305c moves through the four sides of the surface of the connecting plate 305a and is fixedly connected to a limiting plate 305d. The limiting plate 305d is located on the lower four sides of the support plate 305.

[0049] The rest of the structure is the same as in Example 1.

[0050] The operation process of this embodiment is as follows: The fourth handwheel 301b is rotated, which drives the third bidirectional lead screw 301 to rotate. The third bidirectional lead screw 301 drives the third mounting frame 302 to move via the fourth slider 301a, causing the third mounting frame 302 to move the support plate 305 longitudinally to a designated position. Then, the fourth bidirectional lead screw 303 is rotated via the nut 303b, which drives the second electric push rod 304 and the support plate 305 to move laterally via the fifth slider 303a, thereby moving the support plate 305 laterally to a designated position. Finally, the second electric push rod 304 is activated, and its output shaft drives the support plate 305 to rise and fall via the connecting plate 305a, causing the support plate 305 to abut against the lower surface of the circuit board around its perimeter, thus supporting the circuit board.

[0051] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A turnover device for processing a circuit board, comprising a worktable (1), characterized in that: The top center position of the workbench (1) is provided with a turnover assembly (2) for overturning the circuit board, and the top front and rear ends of the workbench (1) are provided with support assemblies (3) for supporting the circuit board; The turnover assembly (2) comprises a first mounting frame (201) movably connected to the top center position of the workbench (1) through a one-way screw rod (202), and the top two sides of the first mounting frame (201) are movably connected with mounting columns (204) through first bidirectional screw rods (203), one end of the mounting columns (204) close to each other is rotatably connected with a rotating disc (205) for overturning the circuit board, and the side away from the mounting column (204) of the rotating disc (205) is fixedly connected with a second mounting frame (206), the front and rear ends of the side away from the rotating disc (205) of the second mounting frame (206) are movably connected with third sliding blocks (207), and the top and bottom of the third sliding block (207) are fixedly connected with second drive motors (207b) through second motor frames (207a), the output shaft of the second drive motor (207b) is sleeved with a drive gear (207c), and the side of the third sliding block (207) outside the second mounting frame (206) is rotatably connected with an L-shaped frame (208), the side close to the third sliding block (207) of the L-shaped frame (208) is fixedly connected with an outer gear ring (208a) meshing with the drive gear (207c), and the bottom of the horizontal branch of the L-shaped frame (208) is fixedly connected with a first electric push rod (209a), the output shaft of the first electric push rod (209a) is fixedly connected with a movable plate (209b), and the upper surface of the movable plate (209b) is fixedly connected with a sponge suction cup (209); The support assembly (3) comprises third bidirectional screw rods (301) rotatably connected to the two sides inside the workbench (1), respectively, and fourth sliding blocks (301a) are threadedly sleeved on the front and rear ends of the outer wall of the third bidirectional screw rod (301), the top of the fourth sliding block (301a) is fixedly connected with a third mounting frame (302), and the third mounting frame (302) is rotatably connected with a fourth bidirectional screw rod (303) inside, the outer wall center position of the fourth bidirectional screw rod (303) is sleeved with a rotating cap (303b), and the outer wall of the fourth bidirectional screw rod (303) is threadedly sleeved with fifth sliding blocks (303a) on both sides, the top of the fifth sliding block (303a) is fixedly connected with a second electric push rod (304), and the output shaft of the second electric push rod (304) is fixedly connected with a connecting plate (305a), the upper side of the connecting plate (305a) is movably connected with a support plate (305).

2. The turnover device for processing a circuit board according to claim 1, wherein The one-way screw rod (202) is rotatably connected to the top of the workbench (1) on both sides, and the outer wall of the one-way screw rod (202) is threadedly sleeved with a first sliding block (202a) on both sides, and the top of the first sliding block (202a) is fixedly connected to the bottom of the first mounting frame (201) on both sides.

3. The turnover device for processing a circuit board according to claim 2, wherein The front end of the one-way screw rod (202) is fixedly connected with a first hand wheel (202b), and the rear end of the one-way screw rod (202) is fixedly connected with a first synchronous wheel (202c), and the first synchronous wheels (202c) are drivingly connected through a first synchronous belt (202d).

4. The turnover device for processing a circuit board according to claim 1, wherein The first bidirectional screw rod (203) is rotatably connected in the first mounting frame (201), and the two ends of the first bidirectional screw rod (203) are fixedly connected with a second hand wheel (203a), and the outer wall of the first bidirectional screw rod (203) is threadedly sleeved with a second sliding block (203b) on both sides, and the top of the second sliding block (203b) is fixedly connected to the bottom end of the mounting column (204).

5. The turnover device for processing a circuit board according to claim 1, wherein The mounting rod (205a) is rotatably penetrated above the outer wall of the mounting column (204), and one end of the mounting rod (205a) is fixedly connected to the outer wall of the rotating disc (205) near the mounting column (204), and the first driving motor (205d) is fixedly connected to the outer wall below the mounting column (204) through the first motor bracket (205c), and the output shaft of the first driving motor (205d) and the other end of the mounting rod (205a) are both sleeved with a second synchronous wheel (205b), and the second synchronous wheels (205b) are drivingly connected through a second synchronous belt (205e).

6. The turnover device for processing a circuit board according to claim 1, wherein The second bidirectional screw rod (206a) is rotatably connected in the second mounting frame (206), and the front and rear ends of the second bidirectional screw rod (206a) extend to the front and rear ends of the second mounting frame (206) and are fixedly connected with a third hand wheel (206b), respectively.

7. The turnover device for processing a circuit board according to claim 1, wherein The rear end of the third bidirectional screw rod (301) is rotatably connected to the both sides of the rear end inside the workbench (1), and the front end of the third bidirectional screw rod (301) extends to the front end of the workbench (1) and is fixedly connected with a fourth hand wheel (301b), the outer wall of the third bidirectional screw rod (301) is sleeved with a third synchronous wheel (301c) at the center position, and the third synchronous wheels (301c) are drivingly connected through a third synchronous belt (301d).

8. The turnover device for processing a circuit board according to claim 1, wherein The lower surface of the supporting plate (305) is fixedly connected with a buffer spring (305b) at the center position, and the bottom end of the buffer spring (305b) is fixedly connected to the upper surface of the connecting plate (305a) at the center position, the lower surface of the supporting plate (305) is fixedly connected with a connecting rod (305c) around, and the bottom end of the connecting rod (305c) is movably penetrated through the surface around the connecting plate (305a) and is fixedly connected with a limiting plate (305d), and the limiting plate (305d) is located below the supporting plate (305).

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