Automatic adsorption device for PCB (Printed Circuit Board)

Abstract

The utility model relates to a PCB automatic adsorption device, and belongs to the field of positioning devices, the PCB automatic adsorption device comprises a workbench, a vacuum pump and a communication assembly, the workbench is provided with a vacuum cavity, the workbench is provided with a plurality of vacuum holes in an array mode, the vacuum holes are all communicated with the vacuum cavity, the vacuum pump is arranged on the workbench, and the vacuum pump is arranged on the workbench. The communicating assembly is arranged on the vacuum pump and used for communicating the vacuum pump with the vacuum cavity. The PCB on the workbench can be smoothly and tightly sucked on the workbench through the plurality of vacuum holes by negative pressure, so that the positioning of the PCB on the workbench is realized, the problem that the imaging quality of a camera is influenced due to the positioning of the PCB through a glass cover plate is solved, and the detection precision of hole position deviation detection of the PCB is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of positioning devices, and in particular to an automatic adsorption device for a PCB board. Background Art

[0002] PCB (Printed Circuit Board) is an indispensable and important electronic device that supports and interconnects electronic components. There are many factors that affect the hole position accuracy of PCB boards, among which spindle runout, machine tool positioning accuracy, cover plate, pad material, tool, process parameters, etc. have a great impact. With the rapid development of the PCB industry, higher requirements are also put forward for the precision detection of PCB board holes.

[0003] At present, the traditional PCB hole position detection mainly relies on backlight technology, relying on the glass cover to press the PCB to achieve the effect of PCB positioning and pressing flat, and then using the camera to take pictures. However, the glass cover is prone to dust and scratches, which will affect the subsequent imaging quality of the camera, and thus affect the accuracy of PCB hole position deviation detection. Utility Model Content

[0004] In order to improve the detection accuracy of hole position deviation detection on a PCB board, the present application provides an automatic adsorption device for a PCB board.

[0005] The present application provides a PCB board automatic adsorption device adopts the following technical solution:

[0006] A PCB board automatic adsorption device comprises a workbench, a vacuum pump and a connecting component, wherein a vacuum cavity is provided on the workbench, a plurality of vacuum holes are arranged in an array on the workbench, and the plurality of vacuum holes are all connected with the vacuum cavity, the vacuum pump is arranged on the workbench, and the connecting component is arranged on the vacuum pump and is used to connect the vacuum pump with the vacuum cavity.

[0007] By adopting the above technical solution, the staff places the PCB board on the workbench and starts the vacuum pump. The vacuum pump extracts the gas in the vacuum chamber, forming a negative pressure in the vacuum chamber. The negative pressure can suck the PCB board on the workbench flatly on the workbench through multiple vacuum holes, thereby realizing the positioning of the PCB board on the workbench, improving the problem of affecting the imaging quality of the camera by positioning the PCB board through the glass cover plate, and effectively improving the detection accuracy of hole position deviation detection on the PCB board.

[0008] Optionally, the diameter of the vacuum hole gradually decreases from the direction away from the workbench to the direction close to the workbench, a cover plate is slidably arranged in the vacuum hole, and a control component for driving the cover plate to slide along the axial direction of the vacuum hole is arranged on the workbench.

[0009] By adopting the above technical solution, when the PCB board is adsorbed, the control component drives the cover plate to rise to be flush with the workbench, and the cover plate supports the PCB board to prevent the PCB board from being deformed under the adsorption effect; after the adsorption of the PCB board is completed, the control component drives the cover plate to move down to abut against the side wall of the vacuum hole, and the cover plate can close the vacuum hole to prevent debris from falling into the vacuum hole.

[0010] Optionally, the control component includes a driving plate, a connecting rod and a driving member, the driving plate is slidably arranged on the workbench, a plurality of connecting rods are arranged on the driving plate, and the plurality of connecting rods are respectively connected to a plurality of cover plates, and the driving member is arranged on the workbench and is used to drive the driving plate to slide along the axial direction of the vacuum hole.

[0011] By adopting the above technical solution, the driving member drives the driving plate to slide along the axial direction of the vacuum hole, and the driving plate can drive multiple connecting rods to move along the axial direction of the vacuum hole. The multiple connecting rods can drive multiple cover plates to move synchronously, thereby improving the convenience of the staff to drive multiple cover plates to move along the axial direction of the vacuum hole at the same time.

[0012] Optionally, the connecting component includes an interface, a connecting pipe and a connecting piece, the interface is arranged on a workbench and connected to the vacuum chamber, the connecting pipe is connected to the vacuum pump, and the connecting piece is arranged on the connecting pipe and is used to connect the connecting pipe to the interface.

[0013] By adopting the above technical solution, the staff connects the connecting pipe to the vacuum pump, and then detachably connects the connecting pipe to the interface through the connecting piece, so as to conveniently and quickly complete the connection between the vacuum pump and the vacuum chamber.

[0014] Optionally, the connecting member includes a first connecting ring, a second connecting ring, an embracing ring and a locking bolt, the first connecting ring is arranged on the interface, the second connecting ring is arranged on the connecting pipe, two embracing rings are arranged on the first connecting ring and the second connecting ring, the two embracing rings are hinged to each other, and the locking bolt is rotatably arranged on one of the embracing rings and is used to be threadedly passed through the other embracing ring.

[0015] By adopting the above technical solution, the staff first moves the connecting pipe so that the first connecting ring abuts against the second connecting ring, and then unfolds the two holding rings so that the two holding rings are respectively displaced to the two sides of the first connecting ring and the second connecting ring, and then drives the two holding rings close to each other, screws the locking bolt into the other holding ring, so that the two holding rings tighten the first connecting ring and the second connecting ring, so that the connection between the connecting pipe and the interface can be achieved, and the locking bolt can be unscrewed from the other holding ring to release the connection between the connecting pipe and the interface, thereby improving the convenience for the staff to install and remove the connecting pipe to the interface.

[0016] Optionally, a sealing ring is sleeved at the joint between the first connecting ring and the second connecting ring, and the holding ring is tightly pressed against the sealing ring.

[0017] By adopting the above technical solution, the sealing ring seals the abutment between the first connecting ring and the second connecting ring, and the holding ring then presses the sealing ring against the first connecting ring and the second connecting ring, effectively improving the sealing performance of the abutment between the first connecting ring and the second connecting ring.

[0018] Optionally, the holding ring is provided with a slot for the first connecting ring and the second connecting ring to be inserted into.

[0019] By adopting the above technical solution, the side wall of the slot abuts against the first connecting ring and the second connecting ring, preventing the first connecting ring and the second connecting ring from moving away from each other, thereby improving the stability of the connection between the connecting pipe and the interface.

[0020] Optionally, a pressure relief pipe is provided on the workbench and is connected to the vacuum chamber, and a control valve is provided on the pressure relief pipe.

[0021] By adopting the above technical solution, the staff opens the control valve, and the gas can enter the vacuum chamber from the pressure relief pipe, thereby quickly and conveniently releasing the adsorption of the PCB board, making it easier to remove the PCB board.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Negative pressure can suck the PCB board on the workbench flatly through multiple vacuum holes, realize the positioning of the PCB board on the workbench, improve the problem of affecting the imaging quality of the camera by positioning the PCB board through the glass cover, and effectively improve the detection accuracy of the hole position deviation detection of the PCB board;

[0024] 2. When the PCB board is adsorbed, the control component drives the cover plate to rise to the same level as the workbench, and the cover plate supports the PCB board to prevent the PCB board from deforming under the adsorption effect; after the PCB board is adsorbed, the control component drives the cover plate to move down to abut against the side wall of the vacuum hole, and the cover plate can close the vacuum hole to prevent debris from falling into the vacuum hole;

[0025] 3. The two holding rings tighten the first connecting ring and the second connecting ring to achieve the connection between the connecting pipe and the interface. The locking bolt is unscrewed from the other holding ring to release the connection between the connecting pipe and the interface, which improves the convenience for the staff to install and remove the connecting pipe to the interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the automatic PCB board adsorption device of an embodiment of the present application.

[0027] Figure 2It is a structural schematic diagram of an embodiment of the present application from another perspective (the workbench is partially cut away in the figure).

[0028] Figure 3 It is a schematic diagram of the structure of the vacuum pump and the connecting component of an embodiment of the present application (in the figure, the holding ring explodes in the direction away from the connecting pipe).

[0029] Figure numerals: 1. workbench; 11. vacuum chamber; 12. vacuum hole; 2. vacuum pump; 3. connecting component; 31. interface; 32. connecting pipe; 33. connecting piece; 331. first connecting ring; 332. second connecting ring; 333. holding ring; 3331. slot; 334. locking bolt; 4. cover plate; 5. control component; 51. drive plate; 52. connecting rod; 53. drive piece; 6. sealing ring; 7. pressure relief pipe; 8. control valve. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The embodiment of the present application discloses an automatic adsorption device for a PCB board.

[0032] Reference Figure 1 , Figure 2 The PCB board automatic adsorption device includes a workbench 1, a vacuum pump 2 and a connecting component 3. A vacuum cavity 11 is opened on the workbench 1, and a plurality of vacuum holes 12 are opened on the workbench 1. The plurality of vacuum holes 12 are distributed in a rectangular array on the workbench 1. The plurality of vacuum holes 12 are all connected with the vacuum cavity 11. The vacuum pump 2 is installed on the workbench 1, and the connecting component 3 is installed on the vacuum pump 2. The connecting component 3 is used to connect the vacuum pump 2 with the vacuum cavity 11.

[0033] The staff places the PCB board to be inspected on the workbench 1 at the vacuum hole 12 and starts the vacuum pump 2. The vacuum pump 2 sucks away the gas in the vacuum chamber 11, so that a negative pressure is formed in the vacuum chamber 11. The negative pressure acts on the PCB board through the vacuum hole 12, so that the PCB board can be sucked tightly on the workbench 1, and the PCB board can be evenly adsorbed through the multiple vacuum holes 12 opened in the array, and then the PCB board is flatly positioned on the workbench 1, thereby improving the problem of affecting the imaging quality of the camera by positioning the PCB board through the glass cover plate 4, and effectively improving the detection accuracy of the hole position deviation detection of the PCB board.

[0034] Reference Figure 2 A pressure relief pipe 7 is installed on the workbench 1, and the pressure relief pipe 7 is connected to the vacuum chamber 11. A control valve 8 is installed on the pressure relief pipe 7. The control valve 8 can be a butterfly valve, a solenoid valve, etc. In this embodiment, the control valve 8 is a solenoid valve, which is convenient for the staff to control the opening and closing of the pressure relief pipe 7 through electronic control.

[0035] After the PCB board is inspected, the vacuum pump 2 is turned off, and then the control valve 8 is opened, so that the external gas enters the vacuum chamber 11 through the pressure relief pipe 7 and the negative pressure in the vacuum chamber 11 is released, so that the adsorption of the PCB board can be released, and the convenience of the staff to take away the PCB board is improved.

[0036] Reference Figure 1 , Figure 3 The connecting component 3 includes an interface 31, a connecting pipe 32 and a connecting piece 33. The interface 31 is installed on the workbench 1. The interface 31 is connected to the vacuum chamber 11. The connecting pipe 32 is connected and installed on the vacuum pump 2. The diameter of the connecting pipe 32 is the same as that of the interface 31. The connecting piece 33 is installed on the connecting pipe 32. The connecting piece 33 is used to connect the connecting pipe 32 to the interface 31. The connecting piece 33 includes a first connecting ring 331, a second connecting ring 332, a holding ring 333 and a locking bolt 334. The first connecting ring 331 is circumferentially installed on the interface 31 away from the vacuum chamber 1 1, the second connecting ring 332 is circumferentially installed on the outer wall of the connecting pipe 32 near the interface 31, the first connecting ring 331 and the second connecting ring 332 have the same diameter, two holding rings 333 are installed, the two holding rings 333 are hinged to each other, the two holding rings 333 are semicircular rings, the two holding rings 333 are held at the abutment of the first connecting ring 331 and the second connecting ring 332, the locking bolt 334 is rotatably installed on one of the holding rings 333, and the locking bolt 334 is threadedly penetrated to the end of the other holding ring 333 away from the hinge point.

[0037] When connecting the vacuum pump 2 to the vacuum chamber 11, the staff first connects the connecting pipe 32 to the vacuum pump 2, and then moves the end of the connecting pipe 32 equipped with the second connecting ring 332 to dock the connecting pipe 32 to the interface 31. At this time, the second connecting ring 332 fits the first connecting ring 331, and then unfolds the two holding rings 333, and moves the two holding rings 333 to the two sides of the first connecting ring 331 and the second connecting ring 332 respectively, and then rotates the two holding rings 333 to approach each other, and tightens the locking bolts 334 to the other end. On one holding ring 333, the two holding rings 333 hold the first connecting ring 331 and the second connecting ring 332 tightly, so that the connection between the connecting pipe 32 and the interface 31 can be completed, and the connection between the vacuum pump 2 and the vacuum chamber 11 can be completed conveniently and quickly; when maintenance is required, the staff unscrews the locking bolt 334 from the other holding ring 333, releases the two holding rings 333 from holding the first connecting ring 331 and the second connecting ring 332, and the connecting pipe 32 can be removed from the interface 31, so as to facilitate the maintenance of the vacuum pump 2 and the pipeline.

[0038] Reference Figure 3A card slot 3331 is provided on the holding ring 333, and the width of the card slot 3331 is the same as the sum of the thicknesses of the first connecting ring 331 and the second connecting ring 332, and the card slot 3331 is used for the first connecting ring 331 and the second connecting ring 332 to be inserted; and a sealing ring 6 is sleeved at the abutment between the first connecting ring 331 and the second connecting ring 332, and the bottom wall of the card slot 3331 is tightly pressed against the sealing ring 6. In this embodiment, the sealing ring 6 is a rubber ring.

[0039] The staff first puts the sealing ring 6 on the abutment of the second connecting ring 332 of the first connecting ring 331, and then tightens the two holding rings 333 to the first connecting ring 331 and the second connecting ring 332. At this time, the side wall of the slot 3331 clamps the second connecting ring 332 of the first connecting ring 331, and the bottom wall of the slot 3331 presses the sealing ring 6 against the first connecting ring 331 and the second connecting ring 332, which effectively improves the sealing performance at the abutment of the second connecting ring 332 of the first connecting ring 331, and effectively improves the stability of the connection between the connecting pipe 32 and the interface 31.

[0040] Reference Figure 1 , Figure 2 , the diameter of the vacuum hole 12 is a cone that gradually decreases from the table surface away from the workbench 1 to the direction close to the workbench 1, the cover plate 4 slides in the vacuum hole 12, and the diameter of the cover plate 4 is smaller than the maximum diameter of the vacuum hole 12; a control component 5 is installed on the workbench 1, the control component 5 is used to drive the cover plate 4 to slide along the axial direction of the vacuum hole 12, the control component 5 includes a driving plate 51, a connecting rod 52 and a driving member 53, the driving plate 51 is installed on the side wall of the vacuum chamber 11 along the axial direction of the vacuum hole 12, a plurality of connecting rods 52 are installed in an array on the driving plate 51, and the plurality of connecting rods 52 are respectively connected to the plurality of cover plates 4 in a one-to-one correspondence, the driving member 53 is installed on the workbench 1, the driving member 53 is used to drive the driving plate 51 to slide in the axial direction of the vacuum hole 12, the driving member 53 can be an electric push rod, a cylinder, etc. In this embodiment, the driving member 53 is a cylinder, the cylinder is installed on the workbench 1, and the piston rod of the cylinder is connected to the driving plate 51.

[0041] When it is necessary to adsorb the PCB board, the staff drives the driving plate 51 to move along the axial direction of the vacuum hole 12 toward the table surface close to the workbench 1 through the driving member 53. The driving plate 51 drives multiple cover plates 4 to move flush with the table surface through the connecting rod 52, so that the multiple cover plates 4 can be controlled conveniently and quickly. Since the diameter of the cover plate 4 is smaller than the maximum diameter of the vacuum hole 12, a gap appears between the cover plate 4 and the vacuum hole 12 at this time, and the PCB board can be adsorbed. At the same time, the cover plate 4 can support the PCB board to prevent the adsorption force from being concentrated on the PCB board and causing deformation of the PCB board; when it is not necessary to adsorb the PCB board, the driving member 53 drives the driving plate 51 to move downward along the axial direction of the vacuum hole 12. The driving plate 51 drives multiple cover plates 4 to move downward along the axial direction of the vacuum hole 12 through the connecting rod 52, so that the cover plate 4 abuts against the side wall of the vacuum hole 12 and closes the vacuum hole 12, thereby preventing debris from falling into the vacuum hole 12.

[0042] The implementation principle of an automatic PCB board adsorption device in an embodiment of the present application is as follows: a staff member places a PCB board to be inspected on a workbench 1 at a vacuum hole 12, and drives a driving plate 51 to move upwards through a driving member 53, and the driving plate 51 drives multiple cover plates 4 to move flush with the surface of the workbench 1, and then starts the vacuum pump 2, and the vacuum pump 2 extracts the gas in the vacuum chamber 11, and a negative pressure is generated in the vacuum chamber 11, so that the PCB board can be adsorbed and positioned on the workbench 1, thereby improving the problem that the imaging quality of the camera is affected by positioning the PCB board through the glass cover plate 4, and effectively improving the detection accuracy of the hole position deviation detection of the PCB board. After the detection is completed, the staff member opens the control valve 8 to allow the gas to enter the vacuum chamber 11 from the pressure relief pipe 7, and the negative pressure is released, and the PCB board can be taken away.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A PCB board automatic adsorption device, characterized in that: The invention comprises a workbench (1), a vacuum pump (2) and a connecting component (3); the workbench (1) is provided with a vacuum cavity (11); the workbench (1) is provided with a plurality of vacuum holes (12) in an array; the plurality of vacuum holes (12) are all connected to the vacuum cavity (11); the vacuum pump (2) is arranged on the workbench (1); and the connecting component (3) is arranged on the vacuum pump (2) and is used to connect the vacuum pump (2) with the vacuum cavity (11).

2. The automatic PCB board adsorption device according to claim 1, characterized in that: The diameter of the vacuum hole (12) gradually decreases from a direction away from the workbench (1) to a direction close to the workbench (1), a cover plate (4) is slidably arranged in the vacuum hole (12), and a control component (5) for driving the cover plate (4) to slide along the axial direction of the vacuum hole (12) is arranged on the workbench (1).

3. The PCB automatic adsorption device according to claim 2, characterized in that: The control assembly (5) comprises a drive plate (51), a connecting rod (52) and a drive member (53); the drive plate (51) is slidably arranged on the workbench (1); a plurality of connecting rods (52) are arranged on the drive plate (51); the plurality of connecting rods (52) are respectively connected to a plurality of cover plates (4); and the drive member (53) is arranged on the workbench (1) and is used to drive the drive plate (51) to slide along the axial direction of the vacuum hole (12).

4. The automatic PCB board adsorption device according to claim 1, characterized in that: The connecting component (3) comprises an interface (31), a connecting pipe (32) and a connecting piece (33); the interface (31) is arranged on the workbench (1) and is connected to the vacuum chamber (11); the connecting pipe (32) is arranged in communication with the vacuum pump (2); and the connecting piece (33) is arranged on the connecting pipe (32) and is used to connect the connecting pipe (32) to the interface (31).

5. The automatic PCB board adsorption device according to claim 4, characterized in that: The connecting member (33) comprises a first connecting ring (331), a second connecting ring (332), an embracing ring (333) and a locking bolt (334); the first connecting ring (331) is arranged on the interface (31); the second connecting ring (332) is arranged on the connecting pipe (32); two embracing rings (333) are arranged on the first connecting ring (331) and the second connecting ring (332); the two embracing rings (333) are hinged to each other; and the locking bolt (334) is rotatably arranged on one of the embracing rings (333) and is used to be threadedly inserted into the other embracing ring (333).

6. The automatic PCB board adsorption device according to claim 5, characterized in that: A sealing ring (6) is sleeved on the abutment portion of the first connecting ring (331) and the second connecting ring (332), and the holding ring (333) is tightly pressed against the sealing ring (6).

7. The automatic PCB board adsorption device according to claim 6, characterized in that: The holding ring (333) is provided with a slot (3331) for the first connecting ring (331) and the second connecting ring (332) to be inserted into.

8. The automatic PCB board adsorption device according to claim 1, characterized in that: A pressure relief pipe (7) is provided on the workbench (1) and is in communication with the vacuum chamber (11); a control valve (8) is provided on the pressure relief pipe (7).

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