Roller limiting structure and film pressing device

Abstract

The utility model provides an idler wheel limiting structure and a film pressing device, the idler wheel limiting structure comprises a shaft seat, a pressing plate and an elastic pressing assembly which is installed on the pressing plate and used for clamping an idler wheel, and a first limiting piece is arranged on the shaft seat; a second limiting piece detachably connected with the first limiting piece is arranged on the pressing plate; and when the first limiting piece is connected with the second limiting piece, the distance between the pressing plate and the shaft seat is equal to the preset pressing distance of the elastic pressing assembly for pressing the roller on the shaft seat. The mold pressing device is simple and convenient to disassemble and assemble, when the first limiting piece is connected with the second limiting piece, the roller can be pressed on the shaft seat through the elastic pressing assembly, and then uniform mold pressing is carried out through the roller; and when the first limiting piece and the second limiting piece are separated, the pressing plate and the elastic pressing assembly on the pressing plate can be taken out from the shaft seat, so that clamping of the rolling wheel is relieved, and the rolling wheel can be taken out conveniently to be disassembled, washed and maintained.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board manufacturing equipment, in particular to a roller limiting structure and a film pressing device. Background Art

[0002] OSP (Organic Solderability Preservatives) is a process for surface treatment of copper foil of circuit board substrate. After OSP film is formed, rollers are required to apply pressure to level the film surface of the substrate. However, the force applied by the roller's own gravity alone cannot fully cover the needs of all materials, and additional pressure needs to be applied to the roller to meet this need. In the related art, screws are used to fix the two ends of the roller at a preset position to apply additional pressure to the roller. However, when the two ends are fixed by screws, the height of the screws is often not accurately determined (the operator needs to manually determine whether the height is consistent). This will make it difficult to keep the installation height of the two ends of the roller consistent, which is easy to cause uneven pressure on the entire roller, resulting in discoloration defects and scrapping; and during the processing, the roller needs to be disassembled and cleaned every certain processing cycle. At this time, when the roller is disassembled and cleaned, the screws used to fix the roller must be disassembled and installed, which is extremely inconvenient and time-consuming. Utility Model Content

[0003] The utility model aims at solving the technical problems of inconvenient assembly and disassembly of rollers in the prior art, and provides a roller limiting structure and a film pressing device.

[0004] In view of the above technical problems, an embodiment of the utility model provides a roller limiting structure, including an axle seat, a pressure plate, and an elastic clamping assembly installed on the pressure plate and used to clamp the roller, wherein a first limiting member is provided on the axle seat; a second limiting member detachably connected to the first limiting member is provided on the pressure plate;

[0005] When the first limiting member is connected to the second limiting member, the distance between the pressing plate and the shaft seat is equal to a preset pressing distance by which the elastic pressing assembly presses the roller onto the shaft seat.

[0006] Optionally, the first limiting member includes a limiting column; the second limiting member includes a limiting hole penetrated through the pressure plate; the limiting column passes through the limiting hole and is fixedly mounted on the shaft seat.

[0007] Optionally, the limiting column includes a column body and a column head; the limiting hole includes a strip hole with a preset width and a circular hole connected to the strip hole and having a preset diameter; the preset diameter is greater than the preset width;

[0008] The diameter of the column is smaller than the preset width, and the column is fixedly mounted on the shaft seat through the limiting hole; the minimum width of the column head is larger than the preset width, and the maximum width of the column head is smaller than the preset diameter.

[0009] Optionally, the limiting hole further includes a guide portion arranged at a connecting position between the circular hole and the bar-shaped hole.

[0010] Optionally, the first limiting member includes two limiting columns spaced apart on the shaft seat; the second limiting member includes two limiting holes on the pressure plate corresponding to the first limiting member in a one-to-one manner; and the heights of the two limiting columns are equal.

[0011] Optionally, at least two of the elastic pressing assemblies are spaced apart on the pressing plate, and all of the elastic pressing assemblies are located between two of the limiting holes.

[0012] Optionally, all the elastic pressing components extend toward the shaft seat to the same height.

[0013] Optionally, the elastic pressing assembly includes a pressing rod, a pressing sheet, a spring, and a limit seat slidably mounted on the pressing rod; the limit seat is provided with a through hole and an accommodating space connected to the through hole; the pressing sheet is located in the accommodating space;

[0014] One end of the pressure rod is fixedly mounted on the pressure plate, and the other end of the pressure rod passes through the spring and the through hole in sequence to connect to the pressure sheet, and the end surface of the pressure sheet facing the pressure plate abuts against the edge of the through hole; the spring abuts between the pressure plate and the limit seat.

[0015] Optionally, a clamping groove is provided on the limit seat; the shaft seat includes a seat body and a notch adapted to the limit seat; the elastic clamping assembly clamps the roller through the clamping groove and presses the roller in the notch.

[0016] The utility model also provides a film pressing device, comprising a roller and the above-mentioned roller limiting structure, wherein the film pressing device comprises two roller limiting structures arranged at opposite ends of the roller.

[0017] In the utility model, the roller limiting structure includes an axle seat, a pressure plate and an elastic clamping assembly installed on the pressure plate and used to clamp the roller, the axle seat is provided with a first limiting piece; the pressure plate is provided with a second limiting piece detachably connected to the first limiting piece; when the first limiting piece is connected to the second limiting piece, the distance between the pressure plate and the axle seat is equal to the preset clamping distance when the elastic clamping assembly presses the roller onto the axle seat.

[0018] In the utility model, the first limit piece is fixedly installed on the shaft seat. The installation can be completed by simply aligning the elastic clamping component with the roller placed on the shaft seat, and connecting the end of the first limit piece away from the shaft seat with the second limit piece arranged on the pressure plate, that is, pressing the roller on the shaft seat; and at this time, the distance between the pressure plate and the shaft seat is equal to the preset clamping distance. Therefore, in the die pressing device of the utility model, the distance between the pressure plate and the shaft seat of the two roller limiting structures arranged at both ends of the roller is equal to the preset clamping distance, and then, the elastic clamping components of the two roller limiting structures both limit the roller clamping position at the same height, and there will be no height inconsistency. Then, without the need for personnel to manually judge whether the height is consistent, the pressure applied by the roller to the film surface of the substrate to be pressed is always kept uniform, avoiding the situation where the circuit board is scrapped due to color defects. When the roller needs to be disassembled, cleaned and maintained, it is only necessary to separate the first limit member and the second limit member, and the pressure plate together with the elastic clamping assembly on the pressure plate can be removed from the shaft seat, thereby releasing the clamping of the roller and facilitating the removal of the roller for disassembly, cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural schematic diagram of a roller limiting structure provided in one embodiment of the utility model.

[0021] Figure 2 It is a top view of the structure of a pressing plate provided in one embodiment of the utility model.

[0022] The reference numerals in the specification are as follows:

[0023] 1-shaft seat, 110-seat body, 120-slot, 2-pressure plate, 3-elastic pressing assembly, 310-pressure rod, 320-pressure sheet, 330-spring, 340-limiting seat, 4-first limiting member, 410-limiting column, 4110-column, 4120-column head, 5-second limiting member, 510-limiting hole, 5110-strip hole, 5120-round hole, 5130-guide part. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation of the present invention.

[0026] like Figure 1 to Figure 2 As shown, an embodiment of the utility model provides a roller limiting structure, including an axle seat 1, a pressure plate 2 and an elastic clamping assembly 3 installed on the pressure plate 2 and used to clamp the roller, the axle seat 1 is provided with a first limiting member 4; the pressure plate 2 is provided with a second limiting member 5 detachably connected to the first limiting member 4; when the first limiting member 4 is connected to the second limiting member 5, the distance between the pressure plate 2 and the axle seat 1 is equal to the preset clamping distance of the elastic clamping assembly 3 to press the roller on the axle seat 1.

[0027] In this embodiment, the first limit member 4 on the shaft seat 1 is detachably connected to the second limit member 5 on the pressure plate 2. When the first limit member 4 is connected to the second limit member 5, the first limit member 4 can be installed on the pressure plate 2 through the second limit member 5, so that the pressure plate 2 and the shaft seat 1 are separated by a preset clamping distance. The preset clamping distance is the distance that the elastic clamping assembly 3 installed on the pressure plate 2 presses the roller on the shaft seat 1. The preset clamping distance can be set according to actual needs, such as according to the size of the roller, etc.

[0028] In the above-mentioned embodiment of the utility model, the first limit member 4 is fixedly installed on the shaft seat. It is only necessary to align the elastic pressing component 3 with the roller placed on the shaft seat 1, and connect the end of the first limit member 4 away from the shaft seat 1 with the second limit member 5 arranged on the pressure plate 2 to complete the installation, that is, to press the roller on the shaft seat 1; and at this time, the distance between the pressure plate 2 and the shaft seat 1 is equal to the preset pressing distance. Therefore, the utility model can limit the roller clamping at the same height (the distance between the pressure plate 2 and the shaft seat 1 of the two roller limiting structures at both ends of the roller is equal to the preset pressing distance) through the two roller limiting structures (the two roller limiting structures at both ends of the roller) arranged in pairs in the die pressing device in the above-mentioned embodiment. In this way, the elastic pressing components 3 of the two roller limiting structures can limit the roller clamping at the same height), so that the roller will not have inconsistent heights, and then without the need for personnel to manually judge whether the heights are consistent, the pressure applied by the roller to the film surface of the substrate to be pressed is always kept uniform, thereby avoiding the situation where the circuit board is scrapped due to color defects. When the roller needs to be disassembled, cleaned and maintained, it is only necessary to separate the first limit member 4 and the second limit member 5, and the pressure plate 2 together with the elastic clamping assembly 3 on the pressure plate 2 can be removed from the shaft seat 1, thereby releasing the clamping of the roller and facilitating the removal of the roller for disassembly, cleaning and maintenance.

[0029] In one embodiment, if Figure 1 and Figure 2 As shown, the first limiting member 4 includes a limiting column 410; the second limiting member 5 includes a limiting hole 510 penetrated on the pressing plate 2; the limiting column 410 passes through the limiting hole 510 and is fixedly mounted on the shaft seat 1. It can be understood that the end of the limiting column 410 away from the pressing plate 2 is fixedly mounted on the shaft seat 1, and the end of the limiting column 410 close to the pressing plate 2 passes through the limiting hole 510 on the pressing plate 2 and is connected thereto. In this embodiment, the limiting column 410 is detachably mounted on the pressing plate 2 through the limiting hole 510; the above-mentioned detachable connection structure makes the installation and disassembly of the roller limiting structure convenient and quick, and no auxiliary tools are required.

[0030] In one embodiment, if Figure 1 and Figure 2As shown, the limiting column 410 includes a column 4110 and a column head 4120; the limiting hole 510 includes a strip hole 5110 with a preset width (the preset width is set according to requirements) and a circular hole 5120 connected to the strip hole 5110 and having a preset diameter (the preset diameter is set according to requirements); the preset diameter is greater than the preset width; the diameter of the column 4110 is smaller than the preset width, and the column 4110 is fixedly installed on the shaft seat 1 through the limiting hole 510 (the fixed connection method between the column 4110 and the shaft seat 1 can be threaded connection, welding, etc., which is not limited here); the minimum width of the column head 4120 is greater than the preset width, and the maximum width of the column head 4120 is smaller than the preset diameter. It can be understood that when it is necessary to connect the first limiting member 4 and the second limiting member 5, since the end of the column 4110 of the limiting column 410 away from the column head 4120 is fixedly installed on the shaft seat 1, at this time, the column head 4120 can be first passed through the circular hole 5120 in the limiting hole 510 (the maximum width of the column head 4120 is less than the preset diameter of the circular hole 5120, so it can pass through), and then the pressing plate 2 is translated to move the column 4110 from the circular hole 5120 to the strip hole 5110 (the diameter of the column 4110 is less than the preset width of the strip hole 5110, and the preset diameter of the circular hole 5120 is greater than the preset width of the strip hole 5110, so the column 4110 can freely translate in the strip hole 5110 and the circular hole 5120), and After 110 moves to the strip hole 5110, since the minimum width of the column head 4120 is greater than the preset width of the strip hole 5110, the column head 4120 will be stuck in the strip hole 5110. At this time, it can be regarded that the connection between the first limit member 4 and the second limit member 5 has been completed; conversely, when it is necessary to separate the first limit member 4 and the second limit member 5, the pressure plate 2 is translated so that the column 4110 is translated from the strip hole 5110 toward the circular hole 5120. At this time, since the maximum width of the column head 4120 is less than the preset diameter of the circular hole 5120, the column head 4120 can be disengaged from the circular hole 5120, and after the column head 4120 can be disengaged from the circular hole 5120, it can be regarded that the separation of the first limit member 4 and the second limit member 5 is completed. In this embodiment, the specific arrangement of the limiting column 410 and the limiting hole 510 as described above enables the pressure plate and the limiting column 410 to be conveniently detachably connected through the first limiting member 4 and the second limiting member 5, thereby making the assembly and disassembly of the roller limiting structure very convenient.

[0031] In one embodiment, if Figure 2As shown, the limiting hole 510 further includes a guide portion 5130 disposed at the connection position of the circular hole 5120 and the strip hole 5110. It can be understood that the guide portion 5130 is disposed at the connection position of the circular hole 5120 and the strip hole 5110, and the guide portion 5130 can guide the movement of the column head 4120 in the circular hole 5120 and the strip hole 5110, and the guide portion 5130 can be arc-shaped.

[0032] Furthermore, if Figure 1 As shown, the first limiting member 4 includes two limiting posts 410 spaced apart on the shaft seat 1; the second limiting member 5 includes two limiting holes 510 on the pressing plate 2 corresponding to the first limiting member 4; the heights of the two limiting posts 410 are equal. It can be understood that in this embodiment, two limiting posts 410 are provided on the shaft seat 1, and the two limiting posts 410 are connected to the pressing plate 2 through the limiting holes 510 corresponding thereto, and the heights of the two limiting posts 410 are equal, so that the two ends of the pressing plate 2 can always be kept on the same horizontal line, which is conducive to applying uniform pressure to the film surface of the substrate.

[0033] In one embodiment, if Figure 1 and Figure 2 As shown, at least two elastic pressing components 3 are arranged at intervals on the pressing plate 2, and all the elastic pressing components 3 are located between the two limiting holes 510. It can be understood that at least two elastic pressing components 3 are arranged between the two limiting pillars 410, and at least two elastic pressing components 3 clamp the two rollers in a one-to-one correspondence, and rollers can be arranged at different positions to press the film surface of the same substrate.

[0034] In one embodiment, if Figure 1 As shown, all the elastic clamping components 3 extend to the shaft seat 1 at the same height. It can be understood that the two elastic clamping components 3 extend to the shaft seat 1 at the same height, which can ensure that the rollers pressed by different elastic clamping components 3 are pressed at the same height, thereby making the pressures applied by different rollers to the film surface of the substrate equal, thereby avoiding the phenomenon of uneven pressure.

[0035] In one embodiment, if Figure 1As shown, the elastic clamping assembly 3 includes a pressure rod 310, a pressure sheet 320, a spring 330 and a limit seat 340 slidably mounted on the pressure rod 310; the limit seat 340 is provided with a through hole and a accommodating space connected to the through hole; the pressure sheet 320 is located in the accommodating space; one end of the pressure rod 310 is fixedly mounted on the pressure plate 2, and the other end of the pressure rod 310 passes through the spring 330 and the through hole in turn to connect the pressure sheet 320, and the end face of the pressure sheet 320 facing the pressure plate 2 abuts against the edge of the through hole; the spring 330 abuts between the pressure plate 2 and the limit seat 340. It can be understood that one end of the pressing rod 310 is fixedly mounted on the pressing plate 2, and the other end passes through the through hole in turn and extends into the accommodating space to be connected with the pressing sheet 320. The width of the pressing sheet 320 is greater than the diameter of the through hole, so that the end surface of the pressing sheet 320 facing the pressing plate 2 abuts against the edge of the through hole, thereby preventing the pressing rod 310 from sliding out of the through hole. Figure 1 In the embodiment shown, the spring 330 is compressed and abuts between the bottom end of the pressure plate 2 and the top end of the limit seat 340, and is used to apply elastic thrust so that the limit seat 340 and the roller are elastically abutted and matched, thereby pressing the roller tightly in the accommodating space. Furthermore, the pressure plate 2 is also provided with a mounting hole, and one end of the pressure rod 310 is fixedly installed in the mounting hole.

[0036] In one embodiment, if Figure 1 As shown, the limit seat 340 is provided with a slot; the shaft seat 1 includes a seat body 110 and a notch 120 adapted to the limit seat 340; the elastic pressing component 3 clamps the roller through the slot and presses the roller into the notch 120. It can be understood that one end of the roller shaft of the roller is fixedly installed in the notch 120, and the slot on the limit seat 340 is adapted to the roller, and then the elastic pressing component 3 can clamp the roller through the slot, and then apply elastic thrust to the roller to press the roller into the notch 120, so as to achieve uniform pressure on the substrate. Furthermore, the roller is a sponge roller, which can not only protect the substrate, but also absorb the liquid medicine on the surface of the substrate; the substrate can be a PCB (Printed Circuit Board) substrate, or other board that needs to be subjected to a water absorption process.

[0037] The utility model also provides a film pressing device, comprising a roller and the above-mentioned roller limiting structure, wherein the film pressing device comprises two roller limiting structures arranged at opposite ends of the roller. Figure 1As shown, the laminating device of the above embodiment of the utility model is symmetrically provided with two roller limiting structures at opposite ends of the roller, and the two ends of the roller shaft of the roller are respectively clamped and limited at the same height by the two roller limiting structures (the distance between the pressure plate 2 and the shaft seat 1 of the two roller limiting structures at the two ends of the roller is equal to the preset clamping distance, so that the elastic clamping components 3 of the two roller limiting structures can clamp and limit the roller at the same height), so that the roller will not have inconsistent heights, and then, without the need for personnel to manually judge whether the heights are consistent, the pressure applied by the roller to the film surface of the substrate to be laminar is always kept uniform, avoiding the situation where the circuit board is scrapped due to different color defects. When the roller needs to be disassembled, cleaned and maintained, it is only necessary to separate the first limiting member 4 and the second limiting member 5 of the two roller limiting structures, and the pressure plate 2 together with the elastic clamping component 3 on the pressure plate 2 can be removed from the shaft seat 1, thereby releasing the clamping of the two ends of the roller, and facilitating the removal of the roller for disassembly, cleaning and maintenance.

[0038] The above are merely embodiments of the roller limiting structure and film pressing device of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A roller limiting structure, characterized in that: It comprises an axle seat, a pressing plate and an elastic pressing assembly mounted on the pressing plate and used for clamping a roller, wherein a first limiting member is provided on the axle seat; a second limiting member detachably connected to the first limiting member is provided on the pressing plate; When the first limiting member is connected to the second limiting member, the distance between the pressing plate and the shaft seat is equal to a preset pressing distance by which the elastic pressing assembly presses the roller onto the shaft seat.

2. The roller limiting structure according to claim 1, characterized in that: The first limiting member includes a limiting column; the second limiting member includes a limiting hole penetrated through the pressing plate; the limiting column passes through the limiting hole and is fixedly mounted on the shaft seat.

3. The roller limiting structure according to claim 2, characterized in that: The limiting column includes a column body and a column head; the limiting hole includes a strip hole with a preset width and a circular hole connected to the strip hole and having a preset diameter; the preset diameter is greater than the preset width; The diameter of the column is smaller than the preset width, and the column is fixedly mounted on the shaft seat through the limiting hole; the minimum width of the column head is larger than the preset width, and the maximum width of the column head is smaller than the preset diameter.

4. The roller limiting structure according to claim 3, characterized in that: The limiting hole also includes a guide portion arranged at a connecting position between the circular hole and the strip-shaped hole.

5. The roller limiting structure according to any one of claims 2 to 4, characterized in that: The first limiting member includes two limiting columns spaced apart on the shaft seat; the second limiting member includes two limiting holes on the pressure plate corresponding to the first limiting member; and the heights of the two limiting columns are equal.

6. The roller limiting structure according to claim 5, characterized in that: At least two of the elastic pressing components are spaced apart on the pressing plate, and all of the elastic pressing components are located between two of the limiting holes.

7. The roller limiting structure according to claim 6, characterized in that: The protruding heights of all the elastic pressing components toward the shaft seat are equal.

8. The roller limiting structure according to claim 1, characterized in that: The elastic pressing assembly comprises a pressing rod, a pressing sheet, a spring and a limit seat slidably mounted on the pressing rod; the limit seat is provided with a through hole and an accommodating space connected to the through hole; the pressing sheet is located in the accommodating space; One end of the pressure rod is fixedly mounted on the pressure plate, and the other end of the pressure rod passes through the spring and the through hole in sequence to connect to the pressure sheet, and the end surface of the pressure sheet facing the pressure plate abuts against the edge of the through hole; the spring abuts between the pressure plate and the limit seat.

9. The roller limiting structure according to claim 8, characterized in that: The limiting seat is provided with a clamping groove; the shaft seat comprises a seat body and a notch adapted to the limiting seat; the elastic clamping assembly clamps the roller through the clamping groove and presses the roller in the notch.

10. A film pressing device, characterized in that: It comprises a roller and a roller limiting structure as claimed in any one of claims 1 to 9, and the film pressing device comprises two roller limiting structures arranged at opposite ends of the roller.

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