CN215114426U

CN215114426U - Detection apparatus for circuit board warpage defect

Info

Publication number: CN215114426U
Application number: CN202120903695.XU
Authority: CN
Inventors: 龙光泽
Original assignee: Digital Printed Circuit Board Co Ltd
Current assignee: Digital Printed Circuit Board Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-12-10
Anticipated expiration: 2031-04-26

Abstract

The utility model provides a detection device for the warping defect of a circuit board, which comprises a conveyor belt, a transmission roller and a detection roller; one end of the driving roller is connected with a motor, the other end of the driving roller is rotatably connected with an upright post, a first supporting plate is arranged above the driving roller, a first spring is connected between the first supporting plate and the upright post, the motor is fixed on the base, and a second spring is connected between the first supporting plate and the base; the detection roller is rotatably connected below the lifting seat, a lifting wing plate is fixed on each of two opposite sides of the lifting seat, a second supporting plate is arranged above the lifting seat, a third spring is connected between the lifting seat and the second supporting plate, and a proximity switch located above one of the lifting wing plates is fixed below the second supporting plate. The utility model can stably transmit the horizontally placed circuit board, and has small limitation on positioning; the warping defect of the circuit board can be reliably detected, the detection effect is good, and the detection efficiency is high.

Description

Detection apparatus for circuit board warpage defect

Technical Field

The utility model relates to a circuit board detects, specifically discloses a detection device of circuit board warpage defect.

Background

The circuit board is also called printed circuit board, is the provider of electrical connection of electronic components, takes the insulating substrate as the base material and manufactures the copper clad structure on it, obtains the circuit layer structure with specific shape on the copper layer after etching, is the important electronic component in modern integrated circuit.

The circuit board is mainly manufactured step by step through laminating, etching and other modes, and as a certain error possibly exists in the production and manufacturing process, the problem that the circuit board is easy to warp and bend after being manufactured is solved.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the problems in the prior art, it is necessary to provide a device for detecting a warpage defect of a circuit board, which can reliably detect the warpage defect of the circuit board by a mechanical device, and has a good detection effect and high detection efficiency.

In order to solve the prior art problem, the utility model discloses a detection device for the warping defect of a circuit board, which comprises a conveyor belt, a transmission roller and a detection roller, wherein the transmission roller and the detection roller are both arranged right above the conveyor belt in parallel;

one end of the driving roller is connected with a motor, the other end of the driving roller is rotatably connected with an upright post, a first supporting plate is arranged above the driving roller, a first spring is connected between the first supporting plate and the upright post, the motor is fixed on the machine base, a second spring is connected between the first supporting plate and the machine base, a guide hole is formed in the first supporting plate, a guide pillar is connected in the guide hole in a sliding manner, a limiting plate positioned above the first supporting plate is fixed at the top of the guide pillar, and one end, far away from the upright post, of the driving roller is rotatably connected with the guide pillar;

the detection roller is rotatably connected below the lifting seat, a lifting wing plate is fixed on each of two opposite sides of the lifting seat, a second supporting plate is arranged above the lifting seat, two vertical plates are fixed at the bottom of the second supporting plate, a lifting groove is formed in each vertical plate, the lifting wing plates are connected in the lifting grooves in a sliding mode, a third spring is connected between the lifting seat and the second supporting plate, and a proximity switch located above one of the lifting wing plates is fixed below the second supporting plate.

Furthermore, a plurality of anti-static lugs which are uniformly distributed are fixed on the surface of the conveyor belt.

Further, the surface of the anti-static bump is covered with a first anti-slip layer.

Further, the surface of the driving roller is covered with a second anti-slip layer.

Furthermore, a fourth spring is connected between the lifting wing plate and the second supporting plate, and the fourth spring is positioned on one side, away from the lifting seat, of the vertical plate.

The utility model has the advantages that: the utility model discloses a detection device for warpage defects of a circuit board, which is provided with a conveyor belt and a driving roller which are matched with each other, can stably convey the horizontally placed circuit board, has small limiting condition for positioning the circuit board, and is simple and convenient to operate; in addition, the detection roller through the liftable cooperation proximity switch can carry out reliable detection to the warpage defect of circuit board, and detection effect is good, detection efficiency is high, and rotatable detection roller can avoid causing secondary damage to the circuit board, can effectively improve its possibility of reprocessing and correcting.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the cross-sectional structure of the anti-static bump of the present invention.

The reference signs are: the detection device comprises a conveyor belt 10, an anti-static bump 11, a first anti-slip layer 12, a transmission roller 20, a second anti-slip layer 201, a motor 21, an upright post 22, a first spring 221, a base 23, a second spring 231, a first support plate 24, a guide hole 241, a guide post 25, a limit plate 251, a detection roller 30, a lifting seat 31, a third spring 311, a lifting wing plate 32, a fourth spring 321, a second support plate 33, a vertical plate 34, a lifting groove 341, a proximity switch 35 and a circuit board 40.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 and 2.

The embodiment of the utility model discloses detection device of circuit board warpage defect, including conveyer belt 10, driving roller 20 and detection roller 30 all locate conveyer belt 10 directly over in parallel, namely the rotation axis of driving roller 20, detection roller 30 rotation axis and the rotation axis of conveyer belt 10 are parallel to each other, and driving roller 20 and detection roller 30 are located conveyer belt 10 directly over, the initial interval between driving roller 20 and detection roller 30 and conveyer belt 10 respectively is D, the thickness of being detected circuit board 40 is D, D < D, ensure that driving roller 20 and detection roller 30 all can take place effectual contact with circuit board 40; one end of the driving roller 20 is connected with a motor 21, an output shaft of the motor 21 is coaxially connected with the driving roller 20, or the output shaft of the motor 21 is connected with the driving roller 20 through a synchronous belt or a gear, the other end of the driving roller 20 is rotatably connected with an upright post 22 through a bearing, a first support plate 24 is arranged above the driving roller 20, a first spring 221 which is longitudinally arranged is connected between the first support plate 24 and the upright post 22, the motor 21 is fixed on a machine base 23, a second spring 231 which is longitudinally arranged is connected between the first support plate 24 and the machine base 23, a guide hole 241 is arranged in the first support plate 24, a guide pillar 25 is slidably connected in the guide hole 241, a limit plate 251 which is positioned above the first support plate 24 is fixed at the top of the guide pillar 25, the area of the limit plate 251 is larger than that of the guide hole 241, so that the driving roller 20 and the motor 21 can be effectively prevented from being separated from the first support plate 24, and the burden of the first spring 221 and the second spring 231 under the limit state can be reduced, one end of the driving roller 20 far away from the upright post 22 is rotatably connected with the guide post 25 through a bearing;

the detection roller 30 is rotatably connected under a lifting seat 31, preferably, the lifting seat 31 is a bearing seat, namely, the mounting seat structure with a built-in bearing, a lifting wing plate 32 is fixed on each of two opposite sides of a lifting seat 31, a second supporting plate 33 is arranged above the lifting seat 31, two vertical plates 34 are fixed at the bottom of the second supporting plate 33, a lifting groove 341 is arranged in each vertical plate 34, the two lifting wing plates 32 are respectively connected in the two lifting grooves 341 in a sliding manner, a third spring 311 is connected between the lifting seat 31 and the second support plate 33, a proximity switch 35 positioned above one of the lifting wing plates 32 is fixed below the second support plate 33 and used for monitoring the position of the lifting wing plates 32, therefore, whether the circuit board has the defect of warping or not is detected, the proximity switch 35 is a photoelectric proximity switch, and the proximity switch 35 is connected with an external screening system or an alarm system and used for completing actions immediately after detection.

The conveyor belt 10, the first support plate 24 and the second support plate 33 are all mounted in a frame, not shown in the drawings. The utility model discloses during operation, place circuit board 40 on conveyer belt 10, motor 21 drive driving roller 20 rotates, driving roller 20 cooperates conveyer belt 10 to press from both sides tight and carry forward circuit board 40, even circuit board 40 has defects such as perk, bending, swing joint's structural relation between driving roller 20 and first backup pad 24, driving roller 20 can move upward to realize dodging, can ensure the stability of transmission action, the clamp type transmission action that realizes through driving roller 20 cooperation conveyer belt 10, can effectively reduce the requirement to circuit board 40 orientation of putting, circuit board 40 keeps flat on conveyer belt 10 can realize stable transmission action, it is convenient to detect the operation; when the position of the circuit board 40 with defects such as warping and bending reaches the detection roller 30, the detection roller 30 is pushed to be lifted, and the lifting wing plate 32 is close to the proximity switch 35, so that a corresponding defect detection signal is formed.

In this embodiment, a plurality of anti-static bumps 11 are uniformly distributed on the surface of the conveyor belt 10, and the top surfaces of the anti-static bumps 11 are arc surfaces, so that the circuit board 40 is not tightly attached to the surface of the conveyor belt 10 due to the action of the anti-static bumps 11, and the circuit board 40 can be effectively prevented from being hindered in the sending-out action due to electrostatic adsorption.

Based on the above embodiment, the surface of the anti-static bump 11 is covered with the first anti-slip layer 12, preferably, the first anti-slip layer 12 is a rubber layer, and the positioning effect of the anti-static bump 11 on the circuit board 40 can be effectively improved through the first anti-slip layer 12, so that the problem that the circuit board 40 is separated from the transmission track can be effectively reduced.

In the present embodiment, the surface of the driving roller 20 is covered with the second anti-slip layer 201, preferably, the second anti-slip layer 201 is a rubber layer, and the conveying stability of the driving roller 20 to the circuit board 40 can be effectively improved by the second anti-slip layer 201.

In this embodiment, a fourth spring 321 is connected between each of the lifting wing plates 32 and the second support plate 33, the stability of the lifting action of the lifting seat 31 and the lower detection roller 30 can be effectively improved by the fourth spring 321, the fourth spring 321 is located on one side of the vertical plate 34 away from the lifting seat 31, that is, the fourth spring 321 is located at one end of the lifting wing plate 32 away from the lifting seat 31, so that the detection effect of the proximity switch 35 can be effectively prevented from being influenced by the inclination of the lifting wing plate 32 during lifting.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The detection device for the warping defect of the circuit board is characterized by comprising a conveyor belt (10), a transmission roller (20) and a detection roller (30), wherein the transmission roller (20) and the detection roller (30) are arranged right above the conveyor belt (10) in parallel;

one end of the transmission roller (20) is connected with a motor (21), the other end of the transmission roller (20) is rotatably connected with an upright post (22), a first support plate (24) is arranged above the transmission roller (20), a first spring (221) is connected between the first support plate (24) and the upright post (22), the motor (21) is fixed on a machine base (23), a second spring (231) is connected between the first support plate (24) and the machine base (23), a guide hole (241) is arranged in the first support plate (24), a guide pillar (25) is slidably connected in the guide hole (241), a limit plate (251) positioned above the first support plate (24) is fixed at the top of the guide pillar (25), and one end, far away from the upright post (22), of the transmission roller (20) is rotatably connected with the guide pillar (25);

the detection roller (30) is rotatably connected below a lifting seat (31), two opposite sides of the lifting seat (31) are respectively fixed with a lifting wing plate (32), a second support plate (33) is arranged above the lifting seat (31), two vertical plates (34) are fixed at the bottom of the second support plate (33), a lifting groove (341) is formed in each vertical plate (34), the lifting wing plates (32) are slidably connected into the lifting groove (341), a third spring (311) is connected between the lifting seat (31) and the second support plate (33), and a proximity switch (35) located above one of the lifting wing plates (32) is fixed below the second support plate (33).

2. The detection device for the warpage defect of the circuit board as claimed in claim 1, wherein a plurality of anti-static bumps (11) are fixed on the surface of the conveyor belt (10) and are uniformly distributed.

3. The device for detecting the warping defect of the circuit board as claimed in claim 2, wherein the surface of the anti-static bump (11) is covered with a first anti-slip layer (12).

4. The detection device for the warping defect of the circuit board as claimed in claim 1, wherein the surface of the driving roller (20) is covered with a second anti-slip layer (201).

5. The device for detecting the warping defect of the circuit board according to claim 1, wherein a fourth spring (321) is connected between the lifting wing plate (32) and the second support plate (33), and the fourth spring (321) is located on a side of the vertical plate (34) far away from the lifting base (31).