Circuit board conveying device and circuit board processing apparatus

Abstract

The utility model relates to a kind of circuit board conveying device and circuit board processing equipment, for transmission circuit board, including support body;Conveying unit, it includes roller assembly and board deviation correction subassembly, the roller assembly rotation is set in the support body, the roller assembly includes multiple rollers spaced apart along the first direction, the axial direction of each roller is second direction, the second direction is perpendicular to the first direction;The board deviation correction subassembly includes limit stop, the limit stop is oppositely set in the roller, the limit stop and the roller are mutually cooperated to form accommodation space, the circuit board is placed in the roller assembly, and is housed in the accommodation space;The circuit board and the limit stop have gap between them.The utility model can effectively avoid damaging circuit board, and can reduce the stress of mechanical contact, avoid the problem of pressure injury, deformation or fracture of superfine circuit in wet process, to improve the qualified rate of product.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing technology, and in particular to a circuit board conveying device and circuit board processing equipment. Background Technology

[0002] In the wet process of PCB (Printed Circuit Board), the manufacturing of fine lines places extremely high demands on process precision and stability. With the miniaturization and high density of electronic devices, line width / spacing (L / S) has decreased to below 50μm. In the pattern transfer and surface treatment stages of the wet process, traditional conveyor systems employ a roller design, using multiple independent rollers (such as stainless steel or rubber rollers) to clamp and transport the PCB.

[0003] However, the shortcomings of existing technologies lie in the fact that, due to the dispersed contact points between the rollers and the board surface, the ultra-fine lines on the PCB may be subjected to localized overpressure during movement, leading to line deformation or copper foil damage. Especially in wet processes such as developing, etching, and electroplating, the PCB is in a wet state, its mechanical strength is reduced, and excessive roller pressure will exacerbate the risk of line damage. Furthermore, the ultra-fine lines on the PCB are subjected to pressure from multiple roller plates during movement, resulting in uneven mechanical stress, which can cause line deformation, breakage, or copper layer peeling, affecting product yield. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a circuit board conveying device that can effectively avoid damaging the circuit board, minimize mechanical contact stress, and avoid the problems of pressure damage, deformation or breakage of ultra-fine lines in wet processes, thereby improving the product qualification rate.

[0005] To solve the above-mentioned technical problems, this utility model provides a circuit board conveying device for conveying circuit boards, comprising,

[0006] Support structure;

[0007] The conveying unit includes a roller assembly and a plate misalignment correction assembly. The roller assembly is rotatably mounted on the support body. The roller assembly includes a plurality of rollers spaced apart along a first direction, and the axial direction of each roller is a second direction perpendicular to the first direction. The plate misalignment correction assembly includes a limiting block, which is disposed opposite to the roller. The limiting block and the roller cooperate to form a receiving space. The circuit board is placed on the roller assembly and received in the receiving space. There is a gap between the circuit board and the limiting block.

[0008] An auxiliary unit includes an auxiliary guide wheel disposed on the support body; each of the limiting blocks is equipped with one of the auxiliary guide wheels, and the auxiliary guide wheel has surface contact with the upper surface of the circuit board to cooperate with the roller assembly to limit the circuit board in the height direction.

[0009] In one embodiment of the present invention, the auxiliary unit further includes a connecting shaft, which extends along the second direction and is disposed on the support body, and the auxiliary guide wheel is connected to the connecting shaft; the number of connecting shafts is provided to be multiple.

[0010] In one embodiment of this utility model, the projection of the axis of the connecting shaft and the axis of the roller in the height direction overlaps.

[0011] In one embodiment of this utility model, the number of connecting shafts is the same as the number of rollers.

[0012] In one embodiment of this utility model, the connecting shaft is made of stainless steel or titanium; the surface of the roller is coated with polytetrafluoroethylene.

[0013] In one embodiment of this utility model, the limiting block is coaxially arranged with the roller; the limiting block includes a body and an extension, the extension is disposed on one end of the body near the circuit board, the thickness of the extension along the second direction decreases along the radial direction of the roller to form a ramp structure, and the angle between the ramp surface and the height direction is an acute angle.

[0014] In one embodiment of this utility model, the included angle is 10-25°.

[0015] In one embodiment of the present invention, two sets of the plate deviation correction components are arranged along the second direction to form two parallel receiving spaces; each set of the plate deviation correction components is equipped with two of the auxiliary guide wheels.

[0016] In one embodiment of the present invention, the support body includes a first bracket and a second bracket arranged in parallel, and the end of each roller is respectively connected to the first bracket and the second bracket; a plurality of rollers are evenly spaced on the support body.

[0017] This utility model also provides a circuit board processing equipment, including a circuit board conveying device as described above.

[0018] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0019] This utility model discloses a circuit board conveying device, comprising a support body, a conveying unit, and an auxiliary unit. The conveying unit includes a roller assembly and a board deviation correction assembly. The roller assembly includes several solid rollers, which support the entire lower surface of the circuit board, ensuring uniform force distribution and preventing damage. The board deviation correction assembly has limiting blocks to prevent the circuit board from deviating and provides a buffer gap between itself and the circuit board, effectively preventing board bending, offset, and jamming. The upper surface of the circuit board contacts the auxiliary guide rollers, preventing drift during conveying. This utility model effectively avoids damage to the circuit board and reduces mechanical contact stress, preventing damage, deformation, or breakage of ultra-fine lines during wet processing, thereby improving product yield. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a top view of the overall structure of a preferred embodiment of the present invention (the shaded area is a schematic diagram of the circuit board).

[0022] Figure 2 This is a side view of the overall structure of a preferred embodiment of the present invention.

[0023] Figure 3 yes Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0024] Explanation of reference numerals in the accompanying drawings: 10, circuit board; 1, support body; 11, first support frame; 12, second support frame; 20, roller; 31, limit stop; 311, main body; 312, extension; 41, auxiliary guide wheel; 42, connecting shaft. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention. Example 1

[0026] Reference Figures 1 to 3 As shown, this utility model provides a circuit board conveying device for conveying circuit boards 10.

[0027] The circuit board conveying device includes a support body 1;

[0028] The circuit board conveying device further includes a conveying unit, which includes a roller assembly and a board deviation correction assembly.

[0029] The roller assembly is rotatably mounted on the support body. The roller assembly includes a plurality of rollers 20 spaced apart along a first direction. The axial direction of each roller 20 is a second direction, which is perpendicular to the first direction.

[0030] In detail, the roller 20 is a solid cylindrical structure extending along the second direction.

[0031] The board deviation correction assembly includes a limiting block 31, which is disposed opposite to the roller 20. The limiting block 31 and the roller 20 cooperate to form a receiving space. The circuit board 10 is placed on the roller assembly and received in the receiving space. The roller assembly provides sufficient support to the lower surface of the circuit board 10 to prevent the circuit board 10 from breaking.

[0032] It should be noted that when designing the dimensions, the distance between the two opposing limiting blocks 31 is designed to be slightly larger than the width of the circuit board 10, so that when the circuit board 10 is placed in the receiving space, there is a gap between the circuit board 10 and the limiting blocks 31, thereby avoiding jamming.

[0033] The circuit board conveying device further includes an auxiliary unit, which includes an auxiliary guide wheel 41 disposed on the support body 1. Each limiting block 31 is equipped with one auxiliary guide wheel 41, and the auxiliary guide wheel 41 has surface contact with the upper surface of the circuit board 10 to cooperate with the roller assembly to limit the circuit board 10 in the height direction.

[0034] It should be noted that, in order to avoid the impact caused by the auxiliary guide wheel 41 contacting the circuit board 10, the area where the auxiliary guide wheel 41 contacts the surface of the circuit board 10 is an invalid area of ​​the circuit board 10.

[0035] Therefore, it can be understood that the circuit board conveying device protected by this utility model includes a support body, a conveying unit, and an auxiliary unit. The conveying unit includes a roller assembly and a board deviation correction assembly. The roller assembly includes several solid rollers, which can support the entire lower surface of the circuit board, so that the circuit board is subjected to uniform force and avoids damage to the circuit board. The limiting block of the board deviation correction assembly can prevent the circuit board from deviating and has a buffer gap with the circuit board, thereby effectively preventing the circuit board from bending, shifting, and jamming. The upper surface of the circuit board is in contact with the auxiliary guide wheel, thereby preventing the circuit board from drifting during the conveying process. This utility model can effectively avoid damage to the circuit board and reduce the stress of mechanical contact, avoiding the crushing, deformation, or breakage of ultra-fine lines in the wet process, thereby improving the product qualification rate.

[0036] In a preferred embodiment, the circuit board conveying device is further provided with a drive mechanism. The output end of the drive mechanism is connected to the roller assembly to output power to the roller assembly, thereby driving the roller assembly to move and transfer the circuit board.

[0037] The auxiliary unit further includes a connecting shaft 42, which extends along the second direction and is disposed on the support body 1. The auxiliary guide wheel 41 is connected to the connecting shaft 42. Multiple connecting shafts 42 are provided.

[0038] Specifically, the auxiliary guide wheel 41 is fixedly connected to the connecting shaft 42, thereby pressing down on the circuit board 10 to prevent the circuit board 10 from floating and shifting, effectively avoiding damage to the circuit patterns on the circuit board 10 due to displacement.

[0039] In a preferred embodiment, the projection of the axis of the connecting shaft 42 and the axis of the roller 20 in the height direction overlaps. With this configuration, the force applied to the circuit board 10 by the auxiliary guide wheel 41 can counteract the supporting force provided by the roller 20 to the circuit board 10. The points of force application on the circuit board 10 by both can almost overlap in the height direction, thereby effectively preventing slight bending of the circuit board 10.

[0040] In detail, to ensure the uniformity of force during the transmission of the circuit board 10, the number of connecting shafts 42 is the same as the number of rollers 20.

[0041] In a preferred embodiment, the connecting shaft 42 is made of stainless steel or titanium.

[0042] In addition, the surface of the roller 20 is coated with polytetrafluoroethylene (TEFLON). This design makes the roller 20 more resistant to high temperatures and wear, and able to withstand the corrosion of chemical solutions, making it suitable for various chemical tanks. Furthermore, it increases the texture of the roller 20, enhances the adhesion between the circuit board 10 and the roller 20, and prevents the circuit board 10 from floating.

[0043] In a preferred embodiment, the limiting block 31 is coaxially arranged with the roller 20.

[0044] In detail, the limiting block includes a body 311 and an extension 312. The extension 312 is disposed on one end of the body 311 near the circuit board 10. The thickness of the extension 312 along the second direction decreases radially along the radial direction of the roller 20, thereby forming a ramp structure. The surface of the ramp forms an acute angle with the height direction. This design can provide a certain degree of protection for the circuit board 10, preventing damage such as bends caused by collisions between the circuit board 10 and the limiting block 31 during movement, and providing a buffering effect for the circuit board 10.

[0045] Of course, in some other embodiments, the extension 312 can also be considered as a chamfered structure on the body 311, which also serves as a buffer.

[0046] Furthermore, the included angle is 10-25°.

[0047] Preferably, the included angle is set to 19°.

[0048] In order to improve the transmission efficiency of the circuit board and transport multiple circuit boards at the same time, two sets of the board offset correction components are arranged along the second direction, thereby forming two parallel receiving spaces, each of which can accommodate one circuit board 10; and each set of the board offset correction components is equipped with two auxiliary guide wheels 41, which are arranged opposite to each other at both ends of the receiving space along the second direction.

[0049] In a preferred embodiment, the support body 1 includes a first bracket 11 and a second bracket 12 arranged in parallel, with the end of each roller 20 connected to the first bracket 11 and the second bracket 12 respectively.

[0050] In a preferred embodiment, a plurality of rollers 20 are evenly spaced on the support body 1. Example 2

[0051] This utility model also discloses a circuit board processing equipment, including a circuit board conveying device as described in Embodiment 1.

[0052] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0054] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A circuit board conveying device for conveying circuit boards, characterized in that: include, Support structure; The conveying unit includes a roller assembly and a plate misalignment correction assembly. The roller assembly is rotatably mounted on the support body. The roller assembly includes a plurality of rollers spaced apart along a first direction, and the axial direction of each roller is a second direction perpendicular to the first direction. The plate misalignment correction assembly includes a limiting block, which is disposed opposite to the roller. The limiting block and the roller cooperate to form a receiving space. The circuit board is placed on the roller assembly and received in the receiving space. There is a gap between the circuit board and the limiting block. An auxiliary unit includes an auxiliary guide wheel disposed on the support body; each of the limiting blocks is equipped with one of the auxiliary guide wheels, and the auxiliary guide wheel has surface contact with the upper surface of the circuit board to cooperate with the roller assembly to limit the circuit board in the height direction.

2. The circuit board conveying device according to claim 1, characterized in that: The auxiliary unit further includes a connecting shaft, which extends along the second direction and is disposed on the support body. The auxiliary guide wheel is connected to the connecting shaft. The number of connecting shafts is set to multiple.

3. The circuit board conveying device according to claim 2, characterized in that: The projection of the axis of the connecting shaft and the axis of the roller in the height direction overlaps.

4. The circuit board conveying device according to claim 2, characterized in that: The number of connecting shafts is the same as the number of rollers.

5. A circuit board conveying device according to claim 2, characterized in that: The connecting shaft is made of stainless steel or titanium; the surface of the roller is covered with polytetrafluoroethylene.

6. The circuit board conveying device according to claim 1, characterized in that: The limiting block is coaxially arranged with the roller; the limiting block includes a body and an extension, the extension is disposed on the body near the circuit board, the thickness of the extension along the second direction decreases along the radial direction of the roller to form a ramp structure, and the angle between the ramp surface and the height direction is an acute angle.

7. A circuit board conveying device according to claim 6, characterized in that: The included angle is 10-25°.

8. A circuit board conveying device according to claim 1, characterized in that: The plate deviation correction assembly is arranged in two groups along the second direction, forming two parallel receiving spaces; each group of the plate deviation correction assembly is equipped with two of the auxiliary guide wheels.

9. A circuit board conveying device according to any one of claims 1-8, characterized in that: The support body includes a first bracket and a second bracket arranged in parallel, and the end of each roller is connected to the first bracket and the second bracket respectively; a plurality of rollers are evenly spaced on the support body.

10. A circuit board processing equipment, characterized in that: Includes a circuit board conveying device as described in any one of claims 1-9.

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