Circuit board conveying device and conveying line

Abstract

The utility model relates to the technical field of circuit board manufacturing, in particular to a circuit board conveying device, which comprises a first side supporting plate, a second side supporting plate and a conveying mechanism, the rolling wheel assembly comprises a first rolling wheel set arranged on the first side supporting plate and a second rolling wheel set arranged on the second side supporting plate, and the rolling wheel assembly is used for bearing and conveying a circuit board; the driving mechanism is in transmission connection with the rolling wheel assembly so as to drive the first rolling wheel set and the second rolling wheel set to rotate synchronously; and the distance adjusting mechanism is used for adjusting the distance between the first side supporting plate and the second side supporting plate. The distance between the first side supporting plate and the second side supporting plate can be adjusted to adapt to circuit boards of different sizes. The synchronous rotation mode enables the circuit board to be evenly stressed in the conveying process, and the problems that due to the fact that the rotating speeds of all the rolling wheels are inconsistent, the circuit board is blocked, deviated and even damaged are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board manufacturing technical field, especially a circuit board conveying device and conveying line. BACKGROUND

[0002] In the detection process of the circuit board, the circuit board needs to be conveyed from one detection station to another detection station. The existing circuit board conveying device often adopts a fixed-pitch support plate and a roller structure, which cannot adapt to the conveying requirements of circuit boards of different sizes. During the conveying process of the circuit board, the asynchronous roller rotating speed will cause uneven stress on the circuit board, thereby frequently causing the phenomenon of jamming. In severe cases, the circuit board will also deviate, and cannot be moved to the next detection station in the predetermined posture, which not only reduces the production efficiency, but also causes detection errors due to the deviation of the circuit board, affects the quality and the qualification rate of the product, and cannot meet the requirements of modern high-precision circuit board detection. SUMMARY

[0003] The utility model aims at the problems in the prior art that the circuit board conveying device cannot adapt to the conveying requirements of circuit boards of different sizes and the stability is poor during the conveying process, and provides a circuit board conveying device.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0005] A circuit board conveying device comprises:

[0006] A first side support plate and a second side support plate are oppositely arranged;

[0007] A roller assembly comprises a first roller set arranged on the first side support plate and a second roller set arranged on the second side support plate, and the roller assembly is used for bearing and conveying the circuit board;

[0008] A driving mechanism is in transmission connection with the roller assembly to drive the first roller set and the second roller set to synchronously rotate;

[0009] A pitch adjustment mechanism is used for adjusting the pitch between the first side support plate and the second side support plate.

[0010] Preferably, the driving mechanism comprises a first driving member and a rotating shaft, the rotating shaft is in transmission connection with a driving wheel of the first roller set and a driving wheel of the second roller set, at least one of the driving wheel of the first roller set and the driving wheel of the second roller set is in sliding fit in the axial direction of the rotating shaft and is rotationally stopped in the circumferential direction, and the first driving member drives the rotating shaft to rotate to drive the first roller set and the second roller set to synchronously rotate.

[0011] Preferably, the cross section of the rotating shaft sliding connection part is non-circular.

[0012] Preferably, the spacing adjustment mechanism comprises a screw rod and a second driving member, the screw rod is in transmission connection with the second side support plate, the second side support plate is connected with a guide rail, and the second driving member drives the screw rod to rotate to drive the second side support plate to move along the guide rail relative to the first side support plate.

[0013] Preferably, the roller assembly comprises a plurality of drag rollers arranged along the conveying direction, and the drag rollers are externally provided with flexible rings for carrying the contact circuit board.

[0014] Preferably, the drag rollers are coaxially connected with driven wheels, and the driven wheels are in transmission connection with driving wheels through synchronous belts.

[0015] Preferably, the first side support plate and the second side support plate are provided with a plurality of guide wheels located outside the drag rollers and arranged along the conveying direction.

[0016] A circuit board conveying line comprises two above-mentioned circuit board conveying devices arranged at intervals along the conveying direction of the circuit board, a detection station is arranged between the two circuit board conveying devices, and a transfer device is further arranged, which is used to convey the circuit board on one side of the circuit board conveying device through the detection station to the other side of the circuit board conveying device.

[0017] Preferably, the transfer device comprises a suction disc mechanism connected with a three-axis movement mechanism, and the three-axis movement mechanism is used to drive the suction disc mechanism to move along the X-axis, the Y-axis or the Z-axis.

[0018] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are as follows:

[0019] 1. The spacing between the first side support plate and the second side support plate is adjustable, which can adapt to circuit boards of different sizes. The driving mechanism drives the roller assemblies on the first side support plate and the second side support plate to rotate synchronously. The synchronous rotation mode makes the circuit board bear uniform force during the conveying process, avoids problems such as jamming, deviation and even damage of the circuit board caused by inconsistent rotation speeds of the rollers, and thus ensures the stability and reliability of the circuit board conveying.

[0020] 2. The transmission shaft is used as a transmission component, so that the structure of the entire conveying device is more compact. Compared with a multi-drive decentralized driving structure, this design reduces the number of parts and the occupied space. Compared with the transmission connection mode of chains and belts, the transmission shaft transmission mode is also convenient for adjusting the spacing between the first side support plate and the second side support plate, and flexibly adapts to the conveying requirements of circuit boards of different sizes. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application is a kind of circuit board conveying device.

[0022] Figure 2 A side view of the circuit board conveying device of the embodiment;

[0023] Figure 3 A left view of the circuit board conveying device of the embodiment;

[0024] Figure 4 A circuit board conveying line of the embodiment.

[0025] Marked in the figure: 1 - first side support plate, 2 - second side support plate, 3 - roller assembly, 301 - end wheel, 302 - middle wheel, 303 - auxiliary wheel, 304 - driving wheel, 305 - outer wrapping wheel, 306 - inner wrapping wheel, 307 - synchronous belt, 4 - driving mechanism, 401 - rotating shaft, 5 - spacing adjustment mechanism, 501 - lead screw, 6 - guide rail, 7 - trailing wheel, 8 - guide wheel, 9 - transfer device, 901 - suction cup mechanism, 10 - detection station. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0027] As Figures 1-3 shown is a circuit board conveying device of the embodiment, mainly comprising:

[0028] The first side support plate 1 and the second side support plate 2 are oppositely arranged. The two support plates can be made of high-strength aluminum alloy material, which can withstand various forces in the circuit board conveying process, and ensure that the overall structure of the conveying device is firm and reliable.

[0029] The roller assembly 3 includes a first roller set arranged on the first side support plate 1 and a second roller set arranged on the second side support plate 2.

[0030] The driving mechanism 4 is in transmission connection with the roller assembly 3, which functions to drive the first roller set and the second roller set to rotate synchronously, thereby realizing the stable conveying of the circuit board. The driving mechanism 4 can adopt a high-precision motor as a power source, ensuring the efficiency and stability of power transmission.

[0031] The spacing adjustment mechanism 5 is used to flexibly adjust the spacing between the first side support plate 1 and the second side support plate 2 according to circuit boards of different sizes. The design of the spacing adjustment mechanism 5 makes the conveying device have strong versatility and can adapt to the production needs of circuit boards of various specifications.

[0032] In the embodiment, the driving mechanism 4 comprises a first driving member and a rotating shaft 401. The first driving member can be a direct current motor with moderate power, which can provide stable rotating speed and torque output. The rotating shaft 401 is in transmission connection with the driving wheels 304 of the first and second roller assemblies, and at least one of the driving wheels 304 of the first and second roller assemblies is in sliding fit with the rotating shaft 401 in the axial direction of the rotating shaft 401. For example, at the connection position of the rotating shaft 401 and the driving wheel 304 of the second roller assembly, a non-circular hole such as a square hole matching the cross-sectional shape of the rotating shaft 401 is arranged on the hub of the driving wheel 304, so that the driving wheel 304 can rotate synchronously with the rotating shaft 401, and when the spacing adjustment mechanism 5 is working, the second roller assembly can be allowed to have a certain displacement in the axial direction of the rotating shaft 401, so as to realize the adjustment of the spacing between the first side support plate 1 and the second side support plate 2.

[0033] In the embodiment, the spacing adjustment mechanism 5 comprises a lead screw 501 and a second driving member. The lead screw 501 can be a ball screw with high precision, which has the advantages of high transmission efficiency, high precision and small friction. The lead screw 501 is in transmission connection with the second side support plate 2, and specifically, a nut seat can be fixedly connected to the second side support plate 2, and the nut seat is matched with the nut of the lead screw 501 for installation, so that when the lead screw 501 rotates, the nut seat drives the second side support plate 2 to move. The second side support plate 2 is connected with a guide rail 6, which can be a linear guide rail, providing accurate guidance for the movement of the second side support plate 2 and ensuring the stability and straightness of the movement.

[0034] The second driving member can be a stepping motor, which is connected with the lead screw 501 through a shaft coupling. Under the control of the control system, the stepping motor rotates accurately according to the preset pulse signal, drives the lead screw 501 to rotate, so as to realize the movement of the second side support plate 2 along the guide rail 6 relative to the first side support plate 1, and achieve the purpose of adjusting the spacing. In order to ensure the accuracy and reliability of the spacing adjustment, a limit switch can be arranged on the lead screw 501, which triggers when the second side support plate 2 moves to the limit position, and the control system immediately stops the rotation of the stepping motor to prevent damage to the equipment due to overtravel.

[0035] In the embodiment, the roller assembly 3 comprises a plurality of drag wheels 7 arranged in the conveying direction, which are uniformly distributed between the first side support plate 1 and the second side support plate 2. The spacing between adjacent drag wheels 7 is reasonably designed according to the size and weight of the circuit board to ensure stable support of the circuit board. The drag wheel 7 is provided with a flexible ring for bearing the contact circuit board. The flexible ring can be made of silica gel material, which has good flexibility and wear resistance, can protect the surface of the circuit board, and can also buffer the impact force received by the circuit board to a certain extent during the conveying process.

[0036] The drag wheel 7 is coaxially connected with a driven wheel, and the driven wheel is in driving connection with the driving wheel 304 through a synchronous belt 307. The synchronous belt can be a high-strength polyurethane synchronous belt, which has the advantages of high transmission accuracy, low noise and long service life. The diameter ratio of the driving wheel 304 and the driven wheel is accurately calculated and selected according to the required transmission ratio, so as to ensure that the rotation speed of the roller assembly 3 meets the conveying speed requirement of the circuit board.

[0037] Further, the driven wheel includes end wheels 301 at both ends and middle wheels 302 in the middle, and auxiliary wheels 303 are further arranged between the middle wheels 302, and the auxiliary wheels 303 are located between the middle wheels 302 and the driving wheel 304. The arrangement of the auxiliary wheels 303 can optimize the force transmission between the driven wheels, so that the force distribution of the synchronous belt 307 on the driven wheels is more uniform, and the transmission stability of the roller assembly 3 is further improved.

[0038] Further, the driving wheel 304 is provided with outer wrapping wheels 305 on both sides, and inner wrapping wheels 306 are arranged between the outer wrapping wheels 305 and the end wheels 301. This structure design can improve the tensioning effect of the synchronous belt 307, prevent the synchronous belt 307 from loosening or slipping during operation, and ensure the stable transmission of the roller assembly 3.

[0039] In the embodiment, a plurality of guide wheels 8 are arranged on the first side support plate 1 and the second side support plate 2 outside the drag wheel 7 and along the conveying direction. The guide wheels 8 can be made of plastic material and have a smooth surface. The main function of the guide wheels 8 is to limit and guide the lateral position of the circuit board during the conveying process, so as to prevent the circuit board from deviating or shaking during the conveying process, and ensure that the circuit board can accurately move along the predetermined conveying path. The installation position and angle of the guide wheels 8 can be adjusted according to actual needs to adapt to the guiding needs of circuit boards of different sizes.

[0040] As shown in Figure 4 The embodiment also provides a circuit board conveying line, which includes two circuit board conveying devices as described above and arranged at intervals along the conveying direction of the circuit board. A detection station 10 is arranged between the two circuit board conveying devices, and the detection station 10 is equipped with advanced circuit board detection equipment. The transfer device 9 is used to convey the circuit board on one side of the circuit board conveying device through the detection station 10 to the other side of the circuit board conveying device, so as to realize the continuous and automatic conveying and detection process of the circuit board on the entire conveying line.

[0041] The transfer device includes a suction cup mechanism 901 connected with a three-axis moving mechanism. The suction cup mechanism adopts a vacuum suction cup, which can adsorb the circuit board through the negative pressure generated by a vacuum pump. The material of the vacuum suction cup is rubber, which has good sealing performance and softness, can firmly adsorb circuit boards of different shapes and sizes, and can avoid damaging the surface of the circuit board.

[0042] The three-axis moving mechanism is used for driving the suction disc mechanism to move along the X-axis, the Y-axis or the Z-axis, so as to realize accurate transfer of the circuit board between different positions. The three-axis moving mechanism is composed of three mutually perpendicular linear motion modules, each of which can be driven by a high-precision ball screw guide rail pair and a servo motor, and can realize rapid, accurate and stable positioning and movement. Under the control of the control system, the three-axis moving mechanism accurately moves the suction disc mechanism above the circuit board according to a preset program and position information fed back by a sensor, adsorbs the circuit board, and then accurately places the circuit board on a detection station or a circuit board conveying device on the other side, so as to ensure high efficiency and accuracy of the whole transfer process.

[0043] Through the detailed description of the above specific embodiments, the circuit board conveying device and the conveying line can effectively realize stable conveying, pitch adjustment, accurate transfer and online detection of the circuit board.

[0044] The above only describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A circuit board conveying apparatus characterized by comprising: include: A first side support plate (1) and a second side support plate (2) are set opposite to each other; The roller assembly (3) includes a first roller group disposed on the first side support plate (1) and a second roller group disposed on the second side support plate (2). The roller assembly (3) is used to carry and transport the circuit board. A drive mechanism (4) is connected to the roller assembly (3) to drive the first roller group and the second roller group to rotate synchronously; The spacing adjustment mechanism (5) is used to adjust the spacing between the first side support plate (1) and the second side support plate (2).

2. The circuit board transport apparatus according to claim 1, wherein The drive mechanism (4) includes a first drive member and a rotating shaft (401). The rotating shaft (401) is connected to the drive wheel (304) of the first roller group and the drive wheel (304) of the second roller group. At least one of the drive wheel (304) of the first roller group and the drive wheel (304) of the second roller group slides in the axial direction of the rotating shaft (401) and is circumferentially non-rotating. The first drive member drives the rotating shaft (401) to rotate so as to drive the first roller group and the second roller group to rotate synchronously.

3. The circuit board transport apparatus of claim 2, wherein The cross-section of the sliding connection portion of the rotating shaft (401) is non-circular.

4. The circuit board transport apparatus of claim 1, wherein The spacing adjustment mechanism (5) includes a lead screw (501) and a second driving member. The lead screw (501) is connected to the second side support plate (2) in a transmission connection. The second side support plate (2) is connected to a guide rail (6). The second driving member drives the lead screw (501) to rotate so that the second side support plate (2) moves relative to the first side support plate (1) along the guide rail (6).

5. A circuit board transport device according to any one of claims 1-4, characterized in that The roller assembly (3) includes a plurality of rollers (7) arranged along the conveying direction, and each roller (7) is fitted with a flexible ring for supporting the contact circuit board.

6. The circuit board transport apparatus of claim 5, wherein The tug (7) is coaxially connected to a driven wheel, which is connected to the driving wheel (304) via a synchronous belt (307).

7. The circuit board transport apparatus of claim 5, wherein The first side support plate (1) and the second side support plate (2) are provided with a plurality of guide wheels (8) located outside the tug (7) and arranged along the conveying direction.

8. A circuit board conveying line characterized by comprising: The device includes two circuit board conveying devices as described in any one of claims 1-7, spaced apart along the circuit board conveying direction, with a testing station (10) between the two circuit board conveying devices, and also includes a transfer device (9) for conveying circuit boards on one side of the circuit board conveying device to the other side of the circuit board conveying device via the testing station (10).

9. The circuit board conveyor line of claim 8, wherein, The transfer device (9) includes a suction cup mechanism (901), which is connected to a three-axis moving mechanism. The three-axis moving mechanism is used to drive the suction cup mechanism (901) to move along the X-axis, Y-axis or Z-axis.

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