A circuit board stack drilling detection device

Abstract

This invention discloses a circuit board stacking drilling inspection device, belonging to the field of PCB board production. The device includes a base with side plates fixedly installed on both sides. A suspension is fixedly installed on the base via the side plates. A lower conveyor wheel and an upper conveyor wheel are rotatably connected to the side plates. The lower conveyor wheel is located near the upper surface of the base, and the upper conveyor wheel is located near the lower surface of the suspension. A stack of PCBs is conveyed between the lower and upper conveyor wheels. The stack of PCBs is specifically a combination board formed by stacking multiple PCBs. Each PCB has holes. The suspension has multiple limiting grooves, and a detection column is slidably connected in each limiting groove. The advantages of this invention compared to existing technologies are: this device can perform hole position accuracy inspection on PCB stacks. When an error is found in the hole position, an alarm whistle is triggered, achieving automated hole position inspection of the PCB.

Description

Technical Field

[0001] This invention belongs to the field of PCB manufacturing technology, specifically relating to a device for detecting drilling holes in stacked PCBs. Background Technology

[0002] During PCB manufacturing, holes need to be drilled on the PCB surface. When the spindle is misaligned, tilted, or the positioning device is loose, the hole positions on the PCB will be incorrect, making it impossible to install and use. Therefore, after PCB processing is completed, it is usually necessary to check the hole position accuracy of the PCB. Existing inspection methods usually use manual comparison, which has low efficiency and poor accuracy. Therefore, a PCB stacking drilling inspection device is needed. Summary of the Invention

[0003] The purpose of this invention is to provide a circuit board stacking drilling inspection device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a circuit board stacking drilling inspection device, comprising a base, side plates fixedly installed on both sides of the base, a suspension fixedly installed on the base via the side plates, a lower conveyor wheel and an upper conveyor wheel rotatably connected to the side plates, the lower conveyor wheel being located near the upper surface of the base, and the upper conveyor wheel being located near the lower surface of the suspension, a stacking assembly being conveyed between the lower and upper conveyor wheels, the stacking assembly specifically being a combination board formed by stacking multiple PCB boards, each of the PCB boards having holes, and the suspension having multiple limiting grooves, each limiting groove being slidably connected... The device is equipped with detection columns, each corresponding to a hole on the PCB board. Each limiting groove contains a tension spring, with both ends of the spring fixedly connected to the detection column and the inner wall of the limiting groove, respectively. A limiting plate is fixedly connected to the right end of the base. A rotating shaft is rotatably connected to the base, and a top plate is fixedly connected to the rotating shaft. An airbag is sleeved between the top plate and the limiting plate. A first spring is provided inside the airbag, with both ends of the first spring fixedly connected to the top plate and the limiting plate, respectively. An air guide groove is provided inside the limiting plate, and an air guide cavity is provided inside the suspension. The air guide cavity communicates with each limiting groove, and the left end of the air guide cavity communicates with the air guide groove.

[0005] Preferably, the limiting plate is provided with a sliding groove, a pressure relief slider is slidably connected in the sliding groove, a second spring is provided in the sliding groove, the two ends of the second spring are respectively fixedly connected to the pressure relief slider and the inner wall of the sliding groove, and the pressure relief slider is provided with a through hole that matches the air guide groove.

[0006] Preferably, the limiting plate is provided with a one-way air intake valve, which is connected to the airbag. An operating block is fixedly connected to the upper end of the suspension. An exhaust chamber is provided inside the operating block, which is connected to the air guide chamber. The end of the exhaust chamber away from the air guide chamber is connected to a one-way pressure valve and an alarm whistle in sequence. An exhaust groove is provided on the side end of the operating block, which is connected to the exhaust chamber. A pressure relief valve is provided on the exhaust groove.

[0007] The technical effects and advantages of this invention are as follows: This device can perform hole position accuracy detection on PCB stacked boards. When there is an error in the hole position, the upper alarm whistle will sound an alarm, thus realizing automated hole position detection on PCB boards. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the feeding process of the present invention;

[0009] Figure 2 This is a schematic diagram of the detection process of the present invention;

[0010] Figure 3 For the present invention Figure 1 Enlarged view of part A in the middle;

[0011] Figure 4 For the present invention Figure 2 Enlarged view of part B in the middle section;

[0012] Figure 5 For the present invention Figure 1 Enlarged view of part C in the middle.

[0013] In the diagram: 101, base; 102, lower conveyor wheel; 103, suspension; 104, upper conveyor wheel; 105, stacked plate assembly; 106, limiting slide groove; 107, detection column; 108, tension spring; 109, air guide chamber; 201, top plate; 202, rotating shaft; 203, airbag; 204, first spring; 205, limiting plate; 206, air guide groove; 207, one-way air intake valve; 208, second spring; 209, slide groove; 210, pressure relief slider; 301, operating block; 302, exhaust chamber; 303, one-way pressure valve; 304, alarm whistle; 305, exhaust groove; 306, pressure relief valve. Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] This invention provides, for example Figure 1-5A circuit board stacking drilling inspection device is shown, including a base 101;

[0016] Specifically, side plates are fixedly installed on both sides of the base 101. A suspension 103 is fixedly installed on the base 101 via the side plates. A lower conveyor wheel 102 and an upper conveyor wheel 104 are rotatably connected to the side plates. The lower conveyor wheel 102 is located near the upper surface of the base 101, and the upper conveyor wheel 104 is located near the lower surface of the suspension 103. A stacked plate assembly 105 is conveyed between the lower conveyor wheel 102 and the upper conveyor wheel 104. The stacked plate assembly 105 is specifically a combination plate formed by stacking multiple PCB boards. Each PCB board has holes. The suspension 103 has multiple limiting grooves 106. A detection post 107 is slidably connected in each limiting groove 106. The detection post 107 corresponds one-to-one with the holes on the PCB board. Each groove 106 is provided with a tension spring 108. The two ends of the tension spring 108 are fixedly connected to the detection column 107 and the inner wall of the limiting slide groove 106, respectively. The right end of the base 101 is fixedly connected to a limiting plate 205. A rotating shaft 202 is rotatably connected to the base 101. A top plate 201 is fixedly connected to the rotating shaft 202. An airbag 203 is sleeved between the top plate 201 and the limiting plate 205. A first spring 204 is provided in the airbag 203. The two ends of the first spring 204 are fixedly connected to the top plate 201 and the limiting plate 205, respectively. An air guide groove 206 is provided in the limiting plate 205. An air guide cavity 109 is provided in the suspension 103. The air guide cavity 109 communicates with each limiting slide groove 106. The left end of the air guide cavity 109 communicates with the air guide groove 206.

[0017] Specifically, the limiting plate 205 is provided with a sliding groove 209, and a pressure relief slider 210 is slidably connected in the sliding groove 209. A second spring 208 is provided in the sliding groove 209, and the two ends of the second spring 208 are respectively fixedly connected to the pressure relief slider 210 and the inner wall of the sliding groove 209. The pressure relief slider 210 is provided with a through hole that matches the air guide groove 206.

[0018] Specifically, the limiting plate 205 is provided with a one-way air intake valve 207, which is connected to the airbag 203. An operating block 301 is fixedly connected to the upper end of the suspension 103. An exhaust chamber 302 is provided in the operating block 301, which is connected to the air guide chamber 109. The end of the exhaust chamber 302 away from the air guide chamber 109 is connected to a one-way pressure valve 303 and an alarm whistle 304 in sequence. An exhaust groove 305 is provided on the side end of the operating block 301, which is connected to the exhaust chamber 302. A pressure relief valve 306 is provided on the exhaust groove 305.

[0019] Working principle:

[0020] When the device is in use, the operator transports the stacked PCB board assembly 105 to the space between the base 101 and the suspension 103 via the lower conveyor wheel 102 and the upper conveyor wheel 104. As the stacked assembly 105 slides to the right, it compresses the top plate 201 at the right end, causing the airbag 203 between the top plate 201 and the limiting plate 205 to be compressed. At this time, the air pressure inside the airbag 203 increases. As the stacked assembly 105 moves to the far right, the top plate 201 and the limiting plate 205 are completely in contact. The top plate 201 pushes the pressure relief slider 210 to the right, causing the through hole and air guide groove 206 on the pressure relief slider 210 to be connected. Similarly, at this time, the air pressure inside the airbag 203 is released into multiple limiting slide grooves 106 through the air guide groove 206 and the air guide cavity 109. At this time, the detection column 107 slides downward into the hole in the stacked plate group 105 under the action of the air pressure in the limiting slide groove 106. When there is a hole position error, the detection column 107 cannot move down, and the air pressure in the limiting slide groove 106 cannot be released. At this time, the excess air pressure is released through the operation block 301, the one-way pressure valve 303, and the alarm whistle 304. At this time, the alarm whistle 304 works and sounds an alarm, which indicates that there is a hole position error in the stacked plate group 105, thereby alerting the staff to perform a pre-process inspection and reduce losses.

[0021] When the test is completed and no alarm occurs, the operator controls the pressure relief valve 306 to open the exhaust groove 305. At this time, the tension spring 108 in each limit slide 106 pulls the detection column 107 back to its original position. Simultaneously, the excess air pressure in the limit slide 106 is discharged through the air guide chamber 109, exhaust chamber 302, and exhaust groove 305. Then, the operator reverses the operation of the lower conveyor wheel 102 and the upper conveyor wheel 104 to output the stacked plate group 105. At the same time, the top plate 201 opens under the action of the first spring 204 after the stacked plate group 105 is removed. The air pressure in the airbag 203 is replenished through the one-way air intake valve 207. At this time, the device is completely reset.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A circuit board stack drilling detection device comprising a base (101), characterized in that: Side plates are fixedly installed on both sides of the base (101). A suspension (103) is fixedly installed on the base (101) through the side plates. A lower conveyor wheel (102) and an upper conveyor wheel (104) are rotatably connected to the side plates. The lower conveyor wheel (102) is located near the upper surface of the base (101), and the upper conveyor wheel (104) is located near the lower surface of the suspension (103). A stacked plate assembly (105) is conveyed between the lower conveyor wheel (102) and the upper conveyor wheel (104). The stacked plate assembly (105) is specifically a combination plate formed by stacking multiple PCB boards. Each PCB board has a hole. The suspension (103) has multiple limiting grooves (106). Each limiting groove (106) has a hole. 6) An internal sliding connection is provided with a detection post (107), which corresponds one-to-one with the holes on the PCB board. Each limiting groove (106) is provided with a tension spring (108), and the two ends of the tension spring (108) are respectively fixedly connected to the detection post (107) and the inner wall of the limiting groove (106). The right end of the base (101) is fixedly connected to a limiting plate (205). A rotating shaft (202) is rotatably connected to the base (101). A top plate (201) is fixedly connected to the rotating shaft (202). An airbag (203) is sleeved between the top plate (201) and the limiting plate (205). A first spring (204) is provided in the airbag (203). The two ends of the first spring (204) are respectively... The suspension (103) is fixedly connected to the top plate (201) and the limiting plate (205). The limiting plate (205) is provided with an air guide groove (206), and the suspension (103) is provided with an air guide cavity (109). The air guide cavity (109) communicates with each limiting slide groove (106). The left end of the air guide cavity (109) communicates with the air guide groove (206). The limiting plate (205) is provided with a slide groove (209). A pressure relief slider (210) is slidably connected in the slide groove (209). A second spring (208) is provided in the slide groove (209). The two ends of the second spring (208) are fixedly connected to the pressure relief slider (210) and the inner wall of the slide groove (209), respectively. The pressure relief slider (210) is provided with an air guide groove. The groove (206) has a matching through hole; the limiting plate (205) is provided with a one-way air intake valve (207), which is connected to the airbag (203); the upper end of the suspension (103) is fixedly connected with an operating block (301); the operating block (301) is provided with an exhaust chamber (302), which is connected to the air guide chamber (109); the end of the exhaust chamber (302) away from the air guide chamber (109) is connected to a one-way pressure valve (303) and an alarm whistle (304) in sequence; the side end of the operating block (301) is provided with an exhaust groove (305), which is connected to the exhaust chamber (302); the exhaust groove (305) is provided with a pressure relief valve (306).

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