PCBA vacuum chuck

Abstract

According to the technical scheme, the PCBA vacuum chuck is characterized in that the PCBA vacuum chuck comprises an air chamber, and the lower portion of the air chamber is communicated with a plurality of adsorption mechanisms; the adsorption mechanism comprises a rubber adsorption body, a connecting pipe is connected to the upper end of the rubber adsorption body, a pressure relief pipe is connected to the connecting pipe, a four-claw positioning disc is installed in the connecting pipe, a spring is connected to the lower portion of the four-claw positioning disc, and the bottom end of the spring is located in the rubber adsorption body. According to the vacuum adsorption transfer device, the adsorption mechanism with a small array is adopted, the stability of adsorption transfer is improved, falling off is prevented, the springs, the first attaching plate and the second attaching plate are arranged, in the vacuum process, the adsorption transfer device is not prone to falling off, and the adsorption transfer device is convenient to use. The first attaching plate and the second attaching plate are tightly attached together, air pressure leakage is prevented, adsorbability is kept, and the PCBA is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the field of vacuum suckers, in particular to a PCBA vacuum sucker. Background Art

[0002] PCBA is the abbreviation of Printed Circuit Board Assembly, which means the entire process of a blank PCB board going through SMT mounting or DIP plug-in, referred to as PCBA.

[0003] Vacuum suction cups, also known as vacuum lifting devices, are one of the actuators of vacuum equipment. Vacuum suction cups are of various types. Rubber suction cups can be operated at high temperatures. When PCBA is produced and transferred, vacuum suction cups are used for adsorption and transfer, which is convenient for improving automated operations.

[0004] Referring to the existing Chinese patent with publication number CN213917854U, a PCBA vacuum suction cup is disclosed, which includes a carrier substrate and at least one air pipe quick connector fixedly arranged on the side of the carrier substrate. The upper end surface of the carrier substrate is provided with a carrier station for placing PCBA workpieces, and the upper end surface of the carrier station is provided with an exposed vacuum air path, which is connected to the external vacuum equipment pipeline through the air pipe quick connector, and cooperates to tightly adsorb and fix the PCBA workpiece in the carrier station. The utility model can quickly and effectively realize the adsorption and fixation of PCBA workpieces, especially special-shaped PCBA workpieces, solves the process pain point of difficult design of tooling fixtures in the previous production process, and has a significant improvement in the fixation stability of the workpieces. However, the above-mentioned device still has some disadvantages, such as: 1. It cannot adapt to different PCBAs, that is, after the PCB board is loaded or plugged in, the surface cannot remain flat due to device reasons, and a single adsorption head cannot effectively achieve adsorption and fixation; 2. It cannot effectively achieve vacuum processing, that is, after the vacuum is drawn, the sealing processing cannot be achieved, and it is easy to fall off due to leakage. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a PCBA vacuum suction cup to solve the problems mentioned in the background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A PCBA vacuum suction cup comprises an air chamber, wherein the lower part of the air chamber is fixedly connected to a plurality of adsorption mechanisms, and the plurality of adsorption mechanisms have the same structure;

[0008] The adsorption mechanism includes a rubber adsorption body, the upper end of the rubber adsorption body is connected to a connecting pipe, the connecting pipe is connected to a pressure relief pipe, a four-claw positioning plate is fixedly installed inside the connecting pipe, the lower part of the four-claw positioning plate is connected to a spring, the bottom end of the spring is in the rubber adsorption body, the bottom end of the spring is connected to a first bonding plate, and a second bonding plate is fixedly connected to the upper inner wall of the rubber adsorption body.

[0009] By adopting the above technical solution, a smaller array adsorption mechanism is used, which can adapt to the devices on the PCBA board, adsorb the PCB board in the gap of the device, improve the stability of adsorption and transportation, and prevent it from falling off. A spring is provided in the connecting pipe of the adsorption mechanism, a first bonding plate is provided at the top of the spring, and a second bonding plate is provided on the inner wall of the rubber adsorbent. That is, when vacuum is drawn, because the internal air pressure of the rubber adsorbent is reduced, at this time, the first bonding plate is forced to move upward, causing the spring to contract. At this time, the first bonding plate and the second bonding plate are tightly attached together to prevent air pressure leakage, maintain adsorption, and prevent the PCBA board from falling off.

[0010] Preferably, a first mounting seat is fixedly provided at the lower portion of the four-claw positioning plate, a second mounting seat is fixedly provided at the upper portion of the first laminating plate, and both ends of the spring are fixedly connected to the inside of the first mounting seat and the second mounting seat respectively.

[0011] By adopting the above technical solution, the setting of the first mounting seat and the second mounting seat facilitates the fixed installation of the spring and maintains the connection stability of the spring.

[0012] Preferably, a first sealing plate and a second sealing plate are fixedly provided at the bottom end of the connecting pipe, the first sealing plate and the second sealing plate are respectively attached to two sides of the rubber adsorbing body, and a first fastening nut is provided at the upper end of the first sealing plate.

[0013] By adopting the above technical solution, the setting of the first sealing plate and the second sealing plate facilitates clamping the rubber adsorbing body when the connecting pipe is connected to the rubber adsorbing body, thereby maintaining the sealing of the connection.

[0014] Preferably, a second fastening nut is threadedly connected to a connection point between the connecting pipe and the pressure relief pipe, a third fastening nut is threadedly connected to an upper end of the pressure relief pipe, and the top end of the pressure relief pipe is sealed and connected to the air chamber.

[0015] By adopting the above technical solution, the connection between the connecting pipe and the pressure relief pipe is connected by the second fastening nut, which can not only improve the fixed connection between the connecting pipe and the pressure relief pipe, but also improve the sealing. The pressure relief pipe is connected to the air chamber to realize vacuum extraction, and the third fastening nut is used to perform fixed connection and improve sealing.

[0016] Preferably, one side of the pressure relief pipe is connected to a pressure relief port, and the internal thread of the pressure relief port is connected to a sealing bolt.

[0017] By adopting the above technical solution, the setting of the pressure relief port makes it easy to manually unscrew the sealing bolt to perform pressure relief when equipment fails.

[0018] Preferably, the cross section of the rubber absorbent body is arranged to be S-shaped, and the second bonding plate is fixedly connected to one end close to the connecting pipe.

[0019] By adopting the above technical solution, the rubber adsorbent is arranged in an S shape to facilitate shrinkage under a vacuum state, thereby facilitating reduction of the space volume and improving the adsorption stability.

[0020] Preferably, the first bonding plate is located at the lower part of the second bonding plate, the first bonding plate is located at the upper part of the closing of the rubber absorbent, and the inner side of the second bonding plate is inclined downward.

[0021] By adopting the above technical solution, the first bonding plate is arranged at the lower part of the second bonding plate, which is convenient for squeezing the second bonding plate and improving the sealing performance.

[0022] Preferably, an external pipe is fixedly connected to the middle of the upper end of the air chamber, and the external pipe is connected to an external vacuum pipe.

[0023] By adopting the above technical solution, the setting of the external pipe makes it easy to draw vacuum from the air chamber to achieve vacuum adsorption.

[0024] In summary, the utility model mainly has the following beneficial effects:

[0025] The utility model adopts an adsorption mechanism with a smaller array, which can adapt to the devices on the PCBA board, adsorb the PCB board in the gap of the device, improve the stability of adsorption and transportation, and prevent it from falling off. A spring is provided in the connecting pipe of the adsorption mechanism, a first bonding plate is provided at the top of the spring, and a second bonding plate is provided on the inner wall of the rubber adsorbent. That is, when vacuum is drawn, because the internal air pressure of the rubber adsorbent is reduced, at this time, the first bonding plate is forced to move upward, so that the spring contracts. At this time, the first bonding plate and the second bonding plate are tightly bonded together, so as to prevent air pressure leakage, maintain adsorption, and prevent the PCBA board from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model;

[0027] Figure 2 It is a schematic diagram of the adsorption mechanism of the utility model;

[0028] Figure 3 It is a cross-sectional view of the adsorption mechanism of the utility model;

[0029] Figure 4 It is a partial schematic diagram of the adsorption mechanism of the utility model.

[0030] Figure numerals: 1. air chamber; 2. adsorption mechanism; 201. rubber adsorption body; 202. connecting pipe; 203. pressure relief pipe; 204. pressure relief port; 205. sealing bolt; 206. four-claw positioning plate; 207. spring; 208. first bonding plate; 209. second bonding plate; 210. first mounting seat; 211. second mounting seat; 212. first sealing plate; 213. second sealing plate; 214. first fastening nut; 215. second fastening nut; 216. third fastening nut; 3. external tube. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Example

[0033] refer to Figure 1-4 A PCBA vacuum suction cup comprises an air chamber 1, wherein the lower part of the air chamber 1 is fixedly connected with a plurality of adsorption mechanisms 2, wherein the plurality of adsorption mechanisms 2 have the same structure, and the middle part of the upper end of the air chamber 1 is fixedly connected with an external pipe 3, wherein the external pipe 3 is connected with an external vacuum pipe, and the setting of the external pipe 3 facilitates the vacuum extraction of the air chamber 1 to achieve vacuum adsorption;

[0034] The adsorption mechanism 2 includes a rubber adsorption body 201, the upper end of the rubber adsorption body 201 is connected to a connecting pipe 202, the bottom end of the connecting pipe 202 is fixed with a first sealing plate 212 and a second sealing plate 213, the first sealing plate 212 and the second sealing plate 213 are respectively attached to the two sides of the rubber adsorption body 201, the upper end of the first sealing plate 212 is provided with a first fastening nut 214, the setting of the first sealing plate 212 and the second sealing plate 213 is convenient for the connection between the connecting pipe 202 and the rubber adsorption body When connecting 201, the rubber adsorbent 201 is clamped to maintain the connection sealing, the connecting pipe 202 is connected to the pressure relief pipe 203, the connecting pipe 202 is fixedly installed with a four-claw positioning disk 206, the lower part of the four-claw positioning disk 206 is connected with a spring 207, the bottom end of the spring 207 is in the rubber adsorbent 201, the bottom end of the spring 207 is connected with a first bonding plate 208, and the upper inner wall of the rubber adsorbent 201 is fixedly connected with a second bonding plate 209;

[0035] The connection between the connecting pipe 202 and the pressure relief pipe 203 is threadedly connected with a second fastening nut 215, and the upper end of the pressure relief pipe 203 is threadedly connected with a third fastening nut 216. The top end of the pressure relief pipe 203 is sealed and connected with the air chamber 1. The connection between the connecting pipe 202 and the pressure relief pipe 203 is connected by the second fastening nut 215, which can improve the fixed connection between the connecting pipe 202 and the pressure relief pipe 203 and the sealing performance. The pressure relief pipe 203 is connected with the air chamber 1 to achieve vacuum extraction, and the third fastening nut 216 is fixedly connected and improves the sealing performance. One side of the pressure relief pipe 203 is connected with a pressure relief port 204, and the internal thread of the pressure relief port 204 is connected with a sealing bolt 205. The setting of the pressure relief port 204 is convenient for manually unscrewing the sealing bolt 205 for pressure relief when the equipment fails.

[0036] A first mounting seat 210 is fixedly provided at the lower part of the four-claw positioning plate 206, and a second mounting seat 211 is fixedly provided at the upper part of the first bonding plate 208. The two ends of the spring 207 are respectively fixedly connected to the inside of the first mounting seat 210 and the second mounting seat 211. The setting of the first mounting seat 210 and the second mounting seat 211 facilitates the fixed installation of the spring 207 and maintains the connection stability of the spring 207. The cross section of the rubber adsorbent 201 is set to an S shape, and the second bonding plate 209 is fixedly connected At one end close to the connecting tube 202, the rubber adsorption body 201 is arranged in an S shape to facilitate contraction under a vacuum state, to reduce the spatial volume, and to improve the stability of adsorption. The first bonding plate 208 is located at the lower part of the second bonding plate 209. The first bonding plate 208 is located at the upper part of the closing of the rubber adsorption body 201. The inner side edge of the second bonding plate 209 is inclined downward. The first bonding plate 208 is arranged at the lower part of the second bonding plate 209 to facilitate the force to squeeze the second bonding plate 209 and improve the sealing.

[0037] Specifically, a smaller array adsorption mechanism 2 is used, which can adapt to the devices on the PCBA board and adsorb the PCB board in the gaps of the devices, thereby improving the stability of adsorption and transportation and preventing it from falling off. A spring 207 is provided in the connecting tube 202 of the adsorption mechanism 2, a first bonding plate 208 is provided at the top of the spring 207, and a second bonding plate 209 is provided on the inner wall of the rubber adsorption body 201. That is, when vacuum is drawn, because the internal air pressure of the rubber adsorption body 201 is reduced, at this time, the first bonding plate 208 is forced to move upward, causing the spring 207 to contract. At this time, the first bonding plate 208 and the second bonding plate 209 are tightly fitted together to prevent air pressure leakage, maintain adsorption, and prevent the PCBA board from falling off.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCBA vacuum chuck, comprising an air chamber (1), characterized in that: The lower part of the air chamber (1) is fixedly connected to a plurality of adsorption mechanisms (2), and the plurality of adsorption mechanisms (2) have the same structure; The adsorption mechanism (2) comprises a rubber adsorption body (201), the upper end of the rubber adsorption body (201) is connected to a connecting pipe (202), the connecting pipe (202) is connected to a pressure relief pipe (203), a four-claw positioning disk (206) is fixedly installed inside the connecting pipe (202), the lower part of the four-claw positioning disk (206) is connected to a spring (207), the bottom end of the spring (207) is located in the rubber adsorption body (201), the bottom end of the spring (207) is connected to a first bonding plate (208), and a second bonding plate (209) is fixedly connected to the upper inner wall of the rubber adsorption body (201).

2. A PCBA vacuum chuck according to claim 1, characterized in that: A first mounting seat (210) is fixedly provided at the lower part of the four-claw positioning plate (206), a second mounting seat (211) is fixedly provided at the upper part of the first bonding plate (208), and two ends of the spring (207) are respectively fixedly connected to the inside of the first mounting seat (210) and the second mounting seat (211).

3. A PCBA vacuum chuck according to claim 1, characterized in that: A first sealing plate (212) and a second sealing plate (213) are fixedly provided at the bottom end of the connecting tube (202); the first sealing plate (212) and the second sealing plate (213) are respectively attached to two sides of the rubber adsorbing body (201); and a first fastening nut (214) is provided at the upper end of the first sealing plate (212).

4. The PCBA vacuum chuck according to claim 1, characterized in that: A second fastening nut (215) is threadedly connected at the connection point between the connecting pipe (202) and the pressure relief pipe (203), a third fastening nut (216) is threadedly connected at the upper end of the pressure relief pipe (203), and the top end of the pressure relief pipe (203) is sealed and connected to the air chamber (1).

5. The PCBA vacuum chuck according to claim 1, characterized in that: One side of the pressure relief pipe (203) is connected to a pressure relief port (204), and the inner thread of the pressure relief port (204) is connected to a sealing bolt (205).

6. A PCBA vacuum chuck according to claim 1, characterized in that: The cross section of the rubber adsorption body (201) is arranged to be in an S shape, and the second bonding plate (209) is fixedly connected to one end close to the connecting tube (202).

7. A PCBA vacuum chuck according to claim 6, characterized in that: The first bonding plate (208) is located at the lower part of the second bonding plate (209), the first bonding plate (208) is located at the upper part of the closing of the rubber adsorbent (201), and the inner side edge of the second bonding plate (209) is inclined downward.

8. The PCBA vacuum chuck according to claim 1, characterized in that: An external pipe (3) is fixedly connected to the middle of the upper end of the air chamber (1), and the external pipe (3) is connected to an external vacuum pipe.

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