Circuit board clamp of integrated circuit

Abstract

The invention discloses a circuit board clamp of an integrated circuit, and relates to the technical field of integrated circuits, the circuit board clamp comprises a guide rail and a clamp assembly, the surface of the guide rail is slidably connected with an electric pulley, the clamp assembly is arranged on the surface of the electric pulley, the bottom of a clamping shaft is connected with a gear, and an electric push rod is arranged at the end of a lower carrier plate. A rack is fixed to the end of the spring rod. According to the circuit board clamp of the integrated circuit, the upper carrier plate descends through contraction of the electric push rod, and the clamping part of the flexible circuit board can be changed when the upper carrier plate descends, so that comprehensive appearance detection is performed on the two sides of the flexible circuit board through two times of image shooting; and when the upper carrier plate descends, the flexible circuit board can be bent to any side, so that the appearance of the flexible circuit board in a bent state can be detected through the circuit board clamp of the integrated circuit.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated circuits, in particular to a circuit board fixture for an integrated circuit. Background Art

[0002] In many electronic devices, integrated circuits are usually installed on flexible circuit boards. Flexible circuit boards provide electrical connections and physical support for integrated circuits, connecting integrated circuits with other electronic components to form a complete electronic system. Before carrying integrated circuits, flexible circuit boards need to be clamped and transported to appearance inspection equipment for visual inspection to ensure that the surface is not damaged. Flexible circuit board visual inspection is to use high-definition cameras to shoot the surfaces of both sides of the flexible circuit board, and use inspection software to detect whether there are defects on the surface of the flexible circuit board. In order to improve the efficiency of visual inspection, the flexible circuit board is usually clamped by a clamp to make the flexible circuit board stand up, so that the relatively set high-definition cameras can perform visual inspection on both sides of the circuit board at the same time.

[0003] Existing integrated circuit circuit board clamps can only clamp flexible circuit boards. The clamped part of the circuit board is obscured and difficult to photograph. In addition, the circuit board cannot be bent during visual inspection, making it difficult to visually inspect the surface of the circuit board in a bent state.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a circuit board fixture for integrated circuits is proposed. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a circuit board fixture for an integrated circuit, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a circuit board fixture for an integrated circuit, comprising a guide rail and a fixture assembly, the surface of the guide rail is slidably connected to an electric pulley, the fixture assembly is arranged on the surface of the electric pulley, the fixture assembly comprises a download plate, an upper loading plate, a micro push rod, a bracket, a clamping shaft, a gear, an electric push rod, a U-shaped channel box, a transmission piston rod, an electromagnetic valve, a guide tube, a spring rod and a rack, an upper loading plate is arranged above the download plate, and micro push rods are arranged on both sides of the opposite surfaces of the upper loading plate and the download plate, the end of the micro push rod is fixed with a bracket, and the two sides of the bracket are rotatably connected to the clamping shaft, the bottom of the clamping shaft is connected to a gear, the end of the download plate is provided with an electric push rod, and a U-shaped channel box is fixed on one side of the electric push rod, the top of the U-shaped channel box is penetrated by a transmission piston rod, and the upper side of the U-shaped channel box is provided with an electromagnetic valve, the side of the solenoid valve is connected with a guide tube, and the end of the guide tube is penetrated by a spring rod, and the end of the spring rod is fixed with a rack.

[0007] Furthermore, both sides of the rack are meshed with the side surfaces of the gear, and the rack is elastically connected to the guide tube via a spring rod.

[0008] Furthermore, there are eight clamping shafts in total, and the clamping shafts are grouped into four, and the two groups of clamping shafts are relatively distributed up and down.

[0009] Furthermore, the fixture assembly also includes a U-shaped tube, and a U-shaped tube is fixed on one side of the U-shaped channel box on the surface of the download plate and the upper loading plate.

[0010] Furthermore, the clamp assembly also includes a gas pressure rod, and the gas pressure rod is passed through the top of one end of the U-shaped tube.

[0011] Furthermore, the clamp assembly also includes a three-way valve, and the end of the U-shaped tube away from the air compression rod is connected to the three-way valve.

[0012] Furthermore, the clamp assembly also includes an exhaust pipe, and the outer wall of the three-way valve is connected to the exhaust pipe.

[0013] Furthermore, the fixture assembly also includes a gas nozzle, and the top of the three-way valve is connected to the gas nozzle.

[0014] Furthermore, there are two gas nozzles in total, and the two gas nozzles are respectively arranged on the surface of the lower plate and the upper plate.

[0015] Furthermore, the gas nozzles are relatively distributed one above the other and are arranged in an inclined manner.

[0016] The present invention provides a circuit board fixture for an integrated circuit, which has the following beneficial effects:

[0017] 1. The integrated circuit circuit board fixture lowers the upper loading plate by retracting the electric push rod. When the upper loading plate descends, it not only changes the clamping position of the flexible circuit board, thereby performing a comprehensive appearance inspection on both sides of the flexible circuit board by capturing two images before and after, but also bends the flexible circuit board to either side when the upper loading plate descends, so that the appearance inspection of the flexible circuit board in a bent state can be performed through the integrated circuit circuit board fixture.

[0018] 2. The circuit board fixture of the integrated circuit, in conjunction with a high-definition camera, can capture a fourth image of the flexible circuit board on the basis of the three image captures. Before the fourth image capture, when the upper loading plate descends for the second time, the gas nozzle in the same direction as the first bending and protruding direction of the flexible circuit board is controlled to open by the three-way valve, allowing air to pass through the three-way valve and eject outward from the gas nozzle, while the other gas nozzle is closed by the three-way valve. Therefore, under the thrust of the air ejection, the flexible circuit board protrudes in the other direction than the second capture, thereby performing an appearance inspection on the flexible circuit board that protrudes and bends to the other side. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall front structure of a circuit board fixture for an integrated circuit of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall back structure of a circuit board fixture for an integrated circuit of the present invention;

[0021] Figure 3 This is a schematic diagram of the surface structure of a download board of a circuit board fixture for an integrated circuit of the present invention;

[0022] Figure 4 This is a schematic diagram of the bottom surface structure of an upper loading board of a circuit board fixture for an integrated circuit of the present invention;

[0023] Figure 5 A circuit board fixture for an integrated circuit of the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0024] Figure 6 A circuit board fixture for an integrated circuit of the present invention Figure 4 Enlarged structural diagram at point B in the middle.

[0025] In the figure: 1. Guide rail; 2. Electric pulley; 3. Clamp assembly; 301. Download plate; 302. Loading plate; 303. Micro push rod; 304. Bracket; 305. Clamping shaft; 306. Gear; 307. Electric push rod; 308. U-shaped channel box; 309. Transmission piston rod; 310. Solenoid valve; 311. Guide tube; 312. Spring rod; 313. Rack; 314. U-shaped tube; 315. Air compressor rod; 314. U-shaped tube; 315. Air compressor rod; 316. Three-way valve; 317. Exhaust pipe; 317. Exhaust pipe; 318. Gas nozzle. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0027] like Figures 1-6As shown, the present invention provides a technical solution: a circuit board fixture for an integrated circuit, comprising a guide rail 1 and a fixture assembly 3, wherein the surface of the guide rail 1 is slidably connected to an electric pulley 2, and the fixture assembly 3 is arranged on the surface of the electric pulley 2, and the fixture assembly 3 comprises a download plate 301, an upper loading plate 302, a micro push rod 303, a bracket 304, a clamping shaft 305, a gear 306, an electric push rod 307, a U-shaped channel box 308, a transmission piston rod 309, a solenoid valve 310, a guide tube 311, a spring rod 312 and a rack 313, an upper loading plate 302 is arranged above the download plate 301, and micro push rods 303 are arranged on both sides of the opposite surfaces of the upper loading plate 302 and the download plate 301, the end of the micro push rod 303 is fixed to the bracket 304, and the two sides of the bracket 304 are rotatably connected to the clamping shaft 3 05, the bottom of the clamping shaft 305 is connected to the gear 306, the end of the download plate 301 is provided with an electric push rod 307, and a U-shaped channel box 308 is fixed on one side of the electric push rod 307, the top of the U-shaped channel box 308 is penetrated by a transmission piston rod 309, and a solenoid valve 310 is provided on the upper side of the U-shaped channel box 308, the side of the solenoid valve 310 is connected to the guide tube 311, and the end of the guide tube 311 is penetrated by a spring rod 312, and the end of the spring rod 312 is fixed with a rack 313, both sides of the rack 313 are meshed with the side of the gear 306, and the rack 313 is elastically connected to the guide tube 311 through the spring rod 312. There are eight clamping shafts 305 in total, and the clamping shafts 305 are grouped in four, and the two groups of clamping shafts 305 are relatively distributed up and down;

[0028] The specific operation is as follows: first, the flexible circuit board to be inspected is placed between the clamping shafts 305. Before clamping, the flexible circuit board is covered with a flexible film on both sides. The sides of the film are connected to the stress-bearing pieces. The micro push rod 303 extends, allowing the bracket 304 to carry the clamping shafts 305 to clamp the stress-bearing pieces from both sides of the top and bottom of the flexible circuit board. At this time, the gear 306 at the end of the clamping shaft 305 is engaged with the rack 313.

[0029] After the flexible circuit board is erected and clamped, the electric pulley 2 slides along the surface of the guide rail 1. When the flexible circuit board moves between the oppositely arranged high-definition cameras, it stops moving. The high-definition cameras take a first picture of both sides of the erected flexible circuit board. After the picture is taken, the electric push rod 307 contracts to cause the upper loading plate 302 to descend. At this time, the top of the flexible circuit board is subjected to force, causing its middle part to bulge to either side. Since the side edges of the flexible circuit board are not directly clamped, but indirectly clamped by the force-bearing sheet and the flexible film, when the side edges of the flexible circuit board are subjected to force and the middle part bulges to either side and bends, the angle of the side edges of the flexible circuit board can be adaptively changed to avoid direct clamping of the side edges of the flexible circuit board, which may cause the middle part to bend and cause damage to the side edges. Therefore, after the upper loading plate 302 descends, the high-definition camera can take a second picture of the surface of the bent flexible circuit board.

[0030] When the upper loading plate 302 descends, the top of the transmission piston rod 309 is pressed downward, thereby pushing the transmission medium inside the U-shaped channel box 308. The transmission medium passes through the solenoid valve 310 and enters the guide tube 311. At this time, the spring rod 312 is forced to carry the rack 313 out of the guide tube 311. The extension of the rack 313 drives the gear 306 to rotate, thereby rotating the clamping shaft 305 on the surface of the lower loading plate 301, causing the force-bearing plate to translate, thereby changing the clamping position of the flexible circuit board.

[0031] After the appearance inspection of the bent flexible circuit board, the upper loading plate 302 is lifted and reset, and the flexible circuit board is then re-erected. Simultaneously, a high-definition camera is used to take a third photo of the flexible circuit board after the clamping part is replaced, thereby performing an appearance inspection of the flexible circuit board after the clamping part is replaced. The images taken the first and third times are combined with the inspection software to perform a comprehensive appearance inspection of the surface of the flexible circuit board.

[0032] Based on the above description, the present invention causes the upper loading plate 302 to descend by contracting the electric push rod 307. When the upper loading plate 302 descends, it can not only change the clamping position of the flexible circuit board, thereby performing a comprehensive appearance inspection on both sides of the flexible circuit board through two consecutive image captures, but also when the upper loading plate 302 descends, it can also bend the flexible circuit board to either side, so that the circuit board fixture of the integrated circuit can also perform appearance inspection on the flexible circuit board in a bent state, thereby allowing small damage to be magnified, thereby facilitating visual detection.

[0033] like Figures 1-6 As shown, the fixture assembly 3 also includes a U-shaped tube 314, and a U-shaped tube 314 is fixed on one side of the U-shaped channel box 308 on the surface of the download plate 301 and the upper loading plate 302. The fixture assembly 3 also includes a pressure rod 315, and the pressure rod 315 is passed through the top of one end of the U-shaped tube 314. The fixture assembly 3 also includes a three-way valve 316, and the end of the U-shaped tube 314 away from the pressure rod 315 is connected to the three-way valve 316. The fixture assembly 3 also includes an exhaust pipe 317, and the outer wall of the three-way valve 316 is connected to the exhaust pipe 317. The fixture assembly 3 also includes a gas nozzle 318, and the top of the three-way valve 316 is connected to the gas nozzle 318. There are two gas nozzles 318 in total, and the two gas nozzles 318 are respectively arranged on the surface of the download plate 301 and the upper loading plate 302. The gas nozzles 318 are relatively distributed one above and one below, and the gas nozzles 318 are arranged in an inclined shape;

[0034] The specific operation is as follows: when the upper loading plate 302 descends, the air pressure rod 315 and the transmission piston rod 309 are both forced to descend. When the rack 313 extends a preset distance, such as half of the maximum line distance, the solenoid valve 310 closes the excess transmission medium and enters the elastic airbag at the top of the U-shaped channel box 308, while the transmission piston rod 309 can continue to descend. After the upper loading plate 302 is lifted, the transmission medium inside the elastic airbag returns to the interior of the U-shaped channel box 308 under the elastic airbag's recovery function.

[0035] During the second shot, the air compressor rod 315 descends to push the transmission air inside the U-shaped tube 314, and the two three-way valves 316 control the air nozzle 318 to close, allowing the air to be discharged outward from the exhaust pipe 317.

[0036] When the upper carrier plate 302 descends for the second time, the gas nozzle 318 of the two oppositely arranged gas nozzles 318, which is opposite to the direction in which the flexible circuit board is bent and protruded during the second shooting, is closed by the three-way valve 316, so that the air is discharged outward from the exhaust pipe 317;

[0037] Another gas nozzle 318, aligned with the direction of the first bending and protrusion of the flexible circuit board, is controlled to open by the three-way valve 316, allowing air to pass through the three-way valve 316 and be ejected outward from the gas nozzle 318. The air is ejected toward the middle of the surface of the flexible circuit board, causing it to bend convexly to the other side. The high-definition camera then takes a fourth picture to visually inspect the surface of the flexible circuit board in the direction of the second bending. The speed at which the upper loading plate 302 descends is directly related to the pressure of the gas nozzle 318. Through debugging, it is ensured that the upper loading plate 302 descends sufficiently to ensure that the pressure of the gas nozzle 318 is sufficient to change the bending direction of the flexible circuit board.

[0038] Based on the above description, the present invention, in conjunction with a high-definition camera, can capture a fourth image of the flexible circuit board on the basis of three image captures. Before the fourth image capture, when the upper loading plate 302 descends for the second time, the gas nozzle 318 in the same direction as the first bending and protruding direction of the flexible circuit board is controlled to open by the three-way valve 316, so that air passes through the three-way valve 316 and is ejected outward from the gas nozzle 318, while the other gas nozzle 318 is closed by the three-way valve 316. Therefore, under the thrust of the air ejection, the flexible circuit board protrudes in the other direction than the second capture, thereby performing an appearance inspection on the flexible circuit board that protrudes and bends to the other side.

[0039] In summary, when using the integrated circuit circuit board fixture, the flexible circuit board to be inspected is first placed between the clamping shafts 305. The micro push rod 303 extends, allowing the bracket 304 to carry the clamping shafts 305 to clamp the flexible circuit board from both the top and bottom sides. At this time, the gear 306 at the end of the clamping shaft 305 engages with the rack 313.

[0040] After the flexible circuit board is erected and clamped, the electric pulley 2 slides along the surface of the guide rail 1. When the flexible circuit board moves between the oppositely positioned high-definition cameras, it pauses. The high-definition cameras take a first picture of both sides of the erected flexible circuit board. After the picture is taken, the electric push rod 307 retracts, causing the upper loading plate 302 to descend. At this time, the top of the flexible circuit board is subjected to force, causing its middle part to bulge to either side. As a result, after the upper loading plate 302 descends, the high-definition camera can take a second picture of the surface of the bent flexible circuit board.

[0041] When the upper loading plate 302 descends, the top of the transmission piston rod 309 is pressed downward, thereby pushing the transmission medium inside the U-shaped channel box 308. The transmission medium passes through the solenoid valve 310 and enters the guide tube 311. At this time, the spring rod 312 is forced to carry the rack 313 out of the guide tube 311. The extension of the rack 313 drives the gear 306 to rotate, thereby rotating the clamping shaft 305 on the surface of the lower loading plate 301, causing the flexible circuit board to move horizontally, thereby changing the clamping position of the flexible circuit board.

[0042] After the appearance inspection of the bent flexible circuit board, the upper loading plate 302 is lifted and reset, and the flexible circuit board is then re-erected. Simultaneously, a high-definition camera is used to take a third photo of the flexible circuit board after the clamping part is replaced, thereby performing an appearance inspection of the flexible circuit board after the clamping part is replaced. The images taken the first and third times are combined with the inspection software to perform a comprehensive appearance inspection of the surface of the flexible circuit board.

[0043] When the upper loading plate 302 descends, the air pressure rod 315 and the transmission piston rod 309 are both forced to descend. When the rack 313 extends a preset distance, such as half of the maximum line distance, the solenoid valve 310 closes the excess transmission medium and enters the elastic airbag at the top of the U-shaped channel box 308, while the transmission piston rod 309 can continue to descend. After the upper loading plate 302 is lifted, the transmission medium inside the elastic airbag returns to the inside of the U-shaped channel box 308 due to the elastic airbag's recovery.

[0044] During the second shot, the air compressor rod 315 descends to push the transmission air inside the U-shaped tube 314, and the two three-way valves 316 control the air nozzle 318 to close, allowing the air to be discharged outward from the exhaust pipe 317.

[0045] When the upper carrier plate 302 descends for the second time, the gas nozzle 318 of the two oppositely arranged gas nozzles 318, which is opposite to the direction in which the flexible circuit board is bent and protruded during the second shooting, is closed by the three-way valve 316, so that the air is discharged outward from the exhaust pipe 317;

[0046] Another gas nozzle 318, which is in the same direction as the first bending and protruding direction of the flexible circuit board, is controlled to open by the three-way valve 316, so that air passes through the three-way valve 316 and is ejected outward from the gas nozzle 318. The air is ejected toward the middle of the surface of the flexible circuit board, causing it to bend convexly to the other side under force. Then, a fourth shot is taken by the high-definition camera to perform an appearance inspection of the surface of the flexible circuit board in the protruding direction when the flexible circuit board is bent for the second time.

[0047] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A circuit board fixture for an integrated circuit, comprising a guide rail (1) and a fixture assembly (3), characterized in that: The surface of the guide rail (1) is slidably connected to an electric pulley (2); the clamp assembly (3) is arranged on the surface of the electric pulley (2); the clamp assembly (3) comprises a download plate (301), an upper loading plate (302), a micro push rod (303), a bracket (304), a clamping shaft (305), a gear (306), an electric push rod (307), a U-shaped channel box (308), a transmission piston rod (309), a solenoid valve (310), a guide tube (311), a spring rod (312) and a rack (313); an upper loading plate (302) is arranged above the download plate (301), and micro push rods (303) are arranged on both sides of the opposite surfaces of the upper loading plate (302) and the download plate (301); the micro push rods (303) are arranged on both sides of the opposite surfaces of the micro push rods (301); 3) is fixed with a bracket (304) at the end thereof, and the two sides of the bracket (304) are rotatably connected with a clamping shaft (305), the bottom of the clamping shaft (305) is connected with a gear (306), the end of the download plate (301) is provided with an electric push rod (307), and a U-shaped channel box (308) is fixed to one side of the electric push rod (307), the top of the U-shaped channel box (308) is penetrated with a transmission piston rod (309), and an electromagnetic valve (310) is provided on the upper side of the U-shaped channel box (308), the side of the electromagnetic valve (310) is connected with a guide tube (311), and the end of the guide tube (311) is penetrated with a spring rod (312), and the end of the spring rod (312) is fixed with a rack (313).

2. The circuit board fixture for an integrated circuit according to claim 1, wherein: Both sides of the rack (313) are meshed and connected with the side surfaces of the gear (306), and the rack (313) is elastically connected to the guide tube (311) via a spring rod (312).

3. The circuit board fixture for an integrated circuit according to claim 1, wherein: There are eight clamping shafts (305) in total, and the clamping shafts (305) are grouped into four, and two groups of the clamping shafts (305) are relatively distributed up and down.

4. The circuit board fixture for an integrated circuit according to claim 1, wherein: The clamp assembly (3) further comprises a U-shaped tube (314), and a U-shaped tube (314) is fixed on one side of the U-shaped channel box (308) on the surface of the download plate (301) and the upper loading plate (302).

5. The circuit board fixture for an integrated circuit according to claim 4, characterized in that: The clamp assembly (3) further includes a gas pressure rod (315), and the gas pressure rod (315) is passed through the top of one end of the U-shaped tube (314).

6. The circuit board fixture for an integrated circuit according to claim 5, characterized in that: The clamp assembly (3) further comprises a three-way valve (316), and one end of the U-shaped tube (314) away from the air pressure rod (315) is connected to the three-way valve (316).

7. The circuit board fixture for an integrated circuit according to claim 6, characterized in that: The clamp assembly (3) further includes an exhaust pipe (317), and the outer wall of the three-way valve (316) is connected to the exhaust pipe (317).

8. The circuit board fixture for an integrated circuit according to claim 7, wherein: The clamp assembly (3) further includes a gas nozzle (318), and the top of the three-way valve (316) is connected to the gas nozzle (318).

9. The circuit board fixture for an integrated circuit according to claim 8, characterized in that: There are two gas nozzles (318) in total, and the two gas nozzles (318) are respectively arranged on the surface of the download plate (301) and the upper loading plate (302).

10. The circuit board fixture for an integrated circuit according to claim 8, characterized in that: The gas nozzles (318) are relatively distributed one above the other, and the gas nozzles (318) are arranged in an inclined shape.

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