Vacuum leakage-proof adsorption device for PCB (Printed Circuit Board)

Abstract

The utility model discloses a PCB circuit board vacuum leak-proof adsorption device, which comprises a transfer seat and an accommodating groove arranged on the upper surface of the transfer seat, and further comprises an annular air bag arranged in the accommodating groove, and the outer wall of the peripheral side of the annular air bag is bonded with the inner side wall of the accommodating groove; the inflation equipment is fixedly mounted on the back surface of the transfer seat; the vacuum adsorption structure is arranged in a containing cavity formed in the bottom of the transfer base, the annular air bag is inflated through inflation equipment till the annular air bag is tightly attached to the peripheral side of the PCB, a sealed space is formed in a containing groove, then air in the sealed space is exhausted through a vacuum pump, the negative pressure effect is generated, and the PCB is adsorbed and fixed. The problem that the adsorption fixing effect on the PCB is poor due to the facts that the surface of the PCB is uneven and air tightness is poor when the surface of the PCB is directly adsorbed through a suction cup in an existing mode is solved as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board protection equipment, and particularly relates to a vacuum leak-proof adsorption device for a PCB circuit board. Background Technique

[0002] A PCB circuit board is an important electronic component. A vacuum leak-proof adsorption device for a PCB circuit board is a device specifically used to prevent leakage or damage of a PCB circuit board during transportation or storage. It uses the principle of vacuum adsorption to firmly fix the PCB circuit board on the surface of the device to prevent it from moving or being damaged.

[0003] The utility model patent with the publication number CN221317629U proposes a vacuum leak-proof adsorption device for a PCB circuit board; a placement groove is opened on the upper surface of the placement seat. After placing the PCB circuit board in the placement groove, the air in the placement seat is pumped out by an air extraction pipe arranged in the placement seat, and the lower surface of the PCB circuit board is adsorbed by an annular adsorption disc arranged at the top of the air extraction pipe and attached to the PCB circuit board, so as to fix the PCB circuit board in the placement groove through negative pressure.

[0004] Since pins, chips and other protrusions are welded on the surface of the PCB circuit board, the annular adsorption disc does not fit tightly with the lower surface of the PCB circuit board, and air leakage is likely to occur during the adsorption process, resulting in poor adsorption and fixation effect of the annular adsorption disc on the PCB circuit board. Content of the Utility Model

[0005] In order to overcome the problem in the prior art that since pins, chips and other protrusions are welded on the surface of the PCB circuit board, the annular adsorption disc does not fit tightly with the lower surface of the PCB circuit board, and air leakage is likely to occur during the adsorption process, resulting in poor adsorption and fixation effect of the annular adsorption disc on the PCB circuit board, the utility model provides a vacuum leak-proof adsorption device for a PCB circuit board.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a vacuum leak-proof adsorption device for a PCB circuit board, including a transfer seat and a receiving groove opened on the upper surface of the transfer seat, and further including:

[0007] An annular airbag, the annular airbag is arranged in the receiving groove, and the outer wall of the circumferential side of the annular airbag is bonded to the inner wall of the receiving groove; and

[0008] An inflation device, the inflation device is fixedly installed on the back of the transfer seat; and

[0009] A vacuum adsorption structure, a receiving cavity is opened at the bottom of the transfer seat, and the vacuum adsorption structure is arranged in the receiving cavity opened at the bottom of the transfer seat, and the PCB circuit board placed in the annular airbag is adsorbed and fixed by the vacuum adsorption structure.

[0010] Preferably, the vacuum adsorption structure includes:

[0011] a vacuum pump fixedly connected to the inner wall of the accommodation cavity; and

[0012] a connecting pipe horizontally arranged, the lower surface of the middle section of the connecting pipe is connected to the air extraction end of the vacuum pump through a pipeline; and

[0013] a gas collecting hood embedded in the bottom wall of the accommodation groove, and an air extraction pipe fixedly connected to the bottom end of the gas collecting hood and penetrating through and fixedly connected to the upper surface of the connecting pipe.

[0014] Preferably, the gas collecting hood has a funnel-shaped structure, the end with a larger inner diameter of the gas collecting hood faces upward, and a sealant is filled at the connection between the peripheral side of the top end of the gas collecting hood and the bottom wall of the accommodation groove.

[0015] Preferably, a protective structure is provided above the accommodation groove, and the protective structure is a protective cover arranged on the transfer seat. A sealing gasket is fixedly connected to the peripheral side wall of the open end of the protective cover, and the protective cover is connected to the transfer seat through a connecting member.

[0016] Preferably, an annular clamping groove corresponding to the sealing gasket is formed on the upper surface of the transfer seat outside the accommodation groove, and the protective cover is in interference fit with the annular clamping groove through the sealing gasket.

[0017] Preferably, the connecting member includes a plurality of limit bolts penetrating through and screwed to the outer wall of the annular clamping groove, and

[0018] a plurality of limit holes formed on the sealing gasket corresponding to the limit bolts, and the limit bolts are inserted into the limit holes after penetrating through the outer wall of the annular clamping groove.

[0019] Preferably, anti-slip pads are fixedly connected to both ends of the bottom of the transfer seat, and anti-slip grooves are formed on the lower surface of the anti-slip pads.

[0020] The present utility model provides a PCB circuit board vacuum leak-proof adsorption device, which has the following beneficial effects:

[0021] 1. In the present utility model, the PCB circuit board is placed in the annular airbag, and then an inflation device is used to inflate the annular airbag, so that the annular airbag expands to closely fit the peripheral side of the PCB circuit board, forming a sealed space in the accommodation groove. Then, a vacuum pump is used to exhaust the air in the sealed space, generating a negative pressure effect to adsorb and fix the PCB circuit board, thus avoiding as much as possible the problem that in the existing method, the surface of the PCB circuit board is directly adsorbed by a suction cup, and due to the uneven surface and poor airtightness of the PCB circuit board, the adsorption and fixation effect on the PCB circuit board is not good.

[0022] 2. After placing the PCB circuit board in the annular airbag and inflating the annular airbag, the present utility model can form a gas damping structure through the annular airbag. When the PCB circuit board is impacted during the transfer process, the impact force can be absorbed through the deformation of the annular airbag itself, which is more conducive to protecting the PCB circuit board.

[0023] 3. Through the setting of the protective cover, the present utility model can seal the opening end of the receiving groove, effectively preventing external sundries from entering the receiving groove and damaging the PCB circuit board inside the receiving groove. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of the transfer seat of the utility model;

[0025] Figure 2 It is a connection schematic diagram of the vacuum adsorption structure of the utility model;

[0026] Figure 3 It is a connection schematic diagram of the annular airbag and the inflation device of the utility model;

[0027] Figure 4 It is an installation schematic diagram of the inflation pipe and the valve of the utility model;

[0028] Figure 5 It is a connection schematic diagram of the protective cover and the sealing gasket of the utility model;

[0029] Figure 6 It is an installation structure schematic diagram of the protective cover and the transfer seat.

[0030] In the figure: 1. Transfer seat; 2. Accommodation cavity; 3. Accommodation groove; 4. Annular airbag; 5. Inflation device; 6. Inflation pipe; 7. Valve; 8. Vacuum pump; 9. Connecting pipe; 10. Exhaust pipe; 11. Air collecting hood; 12. Annular clamping groove; 13. Protective cover; 14. Sealing gasket; 15. Limit hole; 16. Limit bolt; 17. Anti-slip pad; 18. Anti-slip groove. Detailed Embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1

[0033] Please refer to Figure 1-4 , the present utility model provides a solution:

[0034] A vacuum leak-proof adsorption device for a PCB circuit board, including a transfer seat 1 and a receiving groove 3 opened on the upper surface of the transfer seat 1, and further including an annular airbag 4 for sealing the periphery of the PCB circuit board;

[0035] The annular airbag 4 is arranged in the receiving groove 3, the outer wall of the periphery of the annular airbag 4 is bonded to the inner wall of the receiving groove 3, and a space for placing the PCB circuit board is formed inside the annular airbag 4; and

[0036] An inflation device 5, the inflation device 5 is fixedly installed on the back surface of the transfer seat 1; and further includes

[0037] An inflation pipe 6, one end of the inflation pipe 6 is fixedly connected to the exhaust end of the inflation device 5, the other end of the inflation pipe 6 penetrates through the side wall of the receiving groove 3 and is connected to the inside of the annular airbag 4, and a valve 7 is fixedly installed at the connection between the inflation pipe 6 and the annular airbag 4; and further includes

[0038] A vacuum adsorption structure, the vacuum adsorption structure is arranged in a receiving cavity 2 opened at the bottom of the transfer seat 1, and the PCB circuit board placed in the annular airbag 4 is adsorbed and fixed by the vacuum adsorption structure;

[0039] The vacuum adsorption structure includes:

[0040] A vacuum pump 8, the vacuum pump 8 is fixedly connected to the inner wall of the receiving cavity 2; and

[0041] A connecting pipe 9, the connecting pipe 9 is arranged horizontally, and the lower surface of the middle section of the connecting pipe 9 is connected to the air extraction end of the vacuum pump 8 through a pipeline; and

[0042] An air collecting hood 11, the air collecting hood 11 is embedded in the bottom wall of the receiving groove 3, and an air extraction pipe 10 fixedly connected to and passing through the upper surface of the connecting pipe 9 and fixedly connected to the connecting pipe 9 is fixedly connected to the bottom end of the air collecting hood 11; and

[0043] The air collecting hood 11 is in a funnel-shaped structure, the end with a larger inner diameter of the air collecting hood 11 faces upward, and a sealant is filled at the connection between the periphery of the top end of the air collecting hood 11 and the bottom wall of the receiving groove 3.

[0044] During use, the user places the PCB circuit board to be transferred into the annular airbag 4. Then, after opening the valve 7, a large amount of gas is filled into the inner cavity of the annular airbag 4 through the air filling pipe 6 by using the air filling device 5. After the gas enters the annular airbag 4, the annular airbag 4 is pushed to expand under the action of air pressure, so that the side of the annular airbag 4 close to the PCB circuit board is closely attached to the periphery of the PCB circuit board under the action of air pressure. At this time, the PCB circuit board and the annular airbag 4 jointly form a sealing structure, forming a sealed cavity between the PCB circuit board and the bottom wall of the receiving groove 3. At this time, the user can start the vacuum pump 8 installed in the receiving cavity 2, and use the air collecting hood 11 to cooperate with the air extraction pipe 10 and the connecting pipe 9 to extract the air in the sealed cavity. When the air pressure in the sealed cavity decreases due to the extraction of air, the PCB circuit board can be tightly adsorbed in the receiving groove 3 by the negative pressure effect to protect the PCB circuit board.

[0045] Embodiment 2

[0046] Please refer to Figure 5-6 , another technical solution provided by the present utility model:

[0047] A vacuum leak-proof adsorption device for a PCB circuit board, including a transfer seat 1 and a receiving groove 3 opened on the upper surface of the transfer seat 1, and further including an annular airbag 4 for sealing the periphery of the PCB circuit board;

[0048] The annular airbag 4 is arranged in the receiving groove 3, the outer wall of the periphery of the annular airbag 4 is bonded to the inner side wall of the receiving groove 3, and a space for placing the PCB circuit board is formed inside the annular airbag 4; and

[0049] An air filling device 5, the air filling device 5 is fixedly installed on the back surface of the transfer seat 1; further including

[0050] An air filling pipe 6, one end of the air filling pipe 6 is fixedly connected to the exhaust end of the air filling device 5, the other end of the air filling pipe 6 penetrates through the side wall of the receiving groove 3 and is connected to the inside of the annular airbag 4, and a valve 7 is fixedly installed at the connection between the air filling pipe 6 and the annular airbag 4; further including

[0051] A vacuum adsorption structure, the vacuum adsorption structure is arranged in the receiving cavity 2 opened at the bottom of the transfer seat 1, and the PCB circuit board placed in the annular airbag 4 is adsorbed and fixed by using the vacuum adsorption structure;

[0052] The vacuum adsorption structure includes:

[0053] A vacuum pump 8, the vacuum pump 8 is fixedly connected to the inner wall of the receiving cavity 2; and

[0054] A connecting pipe 9, the connecting pipe 9 is arranged horizontally, and the lower surface of the middle section of the connecting pipe 9 is connected to the air extraction end of the vacuum pump 8 through a pipeline; and

[0055] The air collecting hood 11 is embedded in the bottom wall of the accommodating groove 3. The bottom end of the air collecting hood 11 is fixedly connected with an air extraction pipe 10 that penetrates the upper surface of the connecting pipe 9 and is fixedly connected to the connecting pipe 9; and

[0056] The air collecting hood 11 has a funnel-shaped structure, with the end having a larger inner diameter facing upward. And a sealant is filled at the connection between the peripheral side of the top end of the air collecting hood 11 and the bottom wall of the accommodating groove 3;

[0057] It further includes:

[0058] A protection structure, which is detachably connected above the annular airbag 4 through a connecting member to protect the PCB circuit board placed in the annular airbag 4; and

[0059] The protection structure is a protective cover 13 arranged above the transfer seat 1. A sealing gasket 14 is fixedly connected to the side wall of the open end of the protective cover 13; and

[0060] An annular clamping groove 12 corresponding to the sealing gasket 14 is formed on the upper surface of the transfer seat 1 outside the accommodating groove 3. The protective cover 13 is press-fitted into the annular clamping groove 12 through the sealing gasket 14; and

[0061] A connecting member, which includes a plurality of limiting bolts 16 that penetrate the outer wall of the annular clamping groove 12 and are screwed to the outer wall of the annular clamping groove 12; and

[0062] A plurality of limiting holes 15 corresponding to the limiting bolts 16 are formed on the sealing gasket 14. After the limiting bolts 16 penetrate the outer wall of the annular clamping groove 12, they are inserted into the limiting holes 15; and

[0063] Anti-slip pads 17 are fixedly connected to both ends of the bottom of the transfer seat 1, and anti-slip grooves 18 are formed on the lower surface of the anti-slip pads 17.

[0064] During use, the user places the PCB circuit board to be transferred into the annular airbag 4. Then, after opening the valve 7, a large amount of gas is filled into the inner cavity of the annular airbag 4 through the air filling pipe 6 by the air filling device 5. After the gas enters the annular airbag 4, the annular airbag 4 is pushed to expand under the action of air pressure, so that the side of the annular airbag 4 close to the PCB circuit board is tightly attached to the periphery of the PCB circuit board under the action of air pressure. At this time, the PCB circuit board and the annular airbag 4 together form a sealing structure, creating a sealed cavity between the PCB circuit board and the bottom wall of the accommodating groove 3. The user can then start the vacuum pump 8 installed in the accommodating cavity 2, and use the air collecting hood 11 in cooperation with the air extraction pipe 10 and the connecting pipe 9 to extract the air in this sealed cavity. When the air pressure in this sealed cavity decreases due to the extraction of air, the PCB circuit board can be tightly adsorbed in the accommodating groove 3 by the negative pressure effect to protect the PCB circuit board;

[0065] Through the setting of the protective cover 13, the side of the PCB circuit board facing away from the bottom wall of the receiving groove 3 can be protected, avoiding the situation that the side of the PCB circuit board facing away from the bottom wall of the receiving groove 3 is easily damaged by external forces. At the same time, the gasket 14 is set to be in interference fit with the annular clamping groove 12, which is convenient for opening the protective cover 13 to take or store the PCB circuit board. It is applicable to the storage stage of the PCB circuit board. When transporting the PCB circuit, a limiting bolt 16 can be screwed on the outer wall of the annular clamping groove 12, and the end of the limiting bolt 16 is inserted into the limiting hole 15 opened on the gasket 14 after screwing, so as to stably fix the protective cover 13 and prevent the protective cover 13 from loosening during the transportation process.

[0066] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vacuum leak-proof adsorption device for a PCB circuit board, comprising a transfer seat (1) and a receiving groove (3) provided on the upper surface of the transfer seat (1), characterized in that: Also included are: an annular airbag (4), the annular airbag (4) being arranged in the containing groove (3), the outer wall of the annular airbag (4) being bonded to the inner wall of the containing groove (3); and An inflation device (5), the inflation device (5) being fixedly mounted on the back of the transfer seat (1); and A vacuum adsorption structure, wherein a receiving cavity (2) is provided at the bottom of the transfer seat (1), and the vacuum adsorption structure is arranged in the receiving cavity (2) provided at the bottom of the transfer seat (1), and the vacuum adsorption structure is used to adsorb and fix the PCB circuit board placed in the annular airbag (4).

2. A PCB circuit board vacuum leak-proof adsorption device according to claim 1, characterized in that: The vacuum adsorption structure includes: a vacuum pump (8), the vacuum pump (8) being fixedly connected to the inner wall of the accommodating chamber (2); and A connecting pipe (9), the connecting pipe (9) is arranged horizontally, and the lower surface of the middle section of the connecting pipe (9) is connected to the suction end of the vacuum pump (8) through a pipeline; and An air collecting hood (11) is embedded in the bottom wall of the containing tank (3), and the bottom end of the air collecting hood (11) is fixedly connected to an exhaust pipe (10) that penetrates the upper surface of the connecting pipe (9) and is fixedly connected to the connecting pipe (9).

3. A PCB circuit board vacuum leak-proof adsorption device according to claim 2, characterized in that: The gas collecting hood (11) is in a funnel-shaped structure, the end of the gas collecting hood (11) with a larger inner diameter faces upward, and the connection between the top peripheral side of the gas collecting hood (11) and the bottom wall of the containing groove (3) is filled with sealant.

4. A PCB circuit board vacuum leak-proof adsorption device according to claim 1, characterized in that: A protective structure is provided above the accommodating groove (3), and the protective structure is a protective cover (13) arranged on the transfer seat (1). A sealing gasket (14) is fixedly connected to the side wall around the opening end of the protective cover (13). A connecting piece is provided on the protective cover (13) and is connected to the transfer seat (1) by means of the connecting piece.

5. A PCB circuit board vacuum leak-proof adsorption device according to claim 4, characterized in that: An annular groove (12) is provided on the upper surface of the transfer seat (1) outside the accommodating groove (3) and is opposite to the sealing gasket (14). The protective cover (13) is interference-engaged with the annular groove (12) via the sealing gasket (14).

6. A PCB circuit board vacuum leak-proof adsorption device according to claim 5, characterized in that: The connecting member comprises a plurality of limit bolts (16) penetrating the outer wall of the annular groove (12) and being threadedly connected to the outer wall of the annular groove (12), and The sealing gasket (14) is provided with a plurality of limiting holes (15) which are positioned opposite to the limiting bolts (16); the limiting bolts (16) penetrate the outer wall of the annular groove (12) and are plugged into the limiting holes (15).

7. The PCB vacuum leak-proof adsorption device according to claim 1, characterized in that: Both ends of the bottom of the transfer seat (1) are fixedly connected with anti-skid pads (17), and the lower surface of the anti-skid pads (17) is provided with anti-skid grooves (18).

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