An assembly tool for printed circuit board processing

Abstract

The present invention discloses an assembly tool for printed circuit board processing, belonging to the technical field of printed circuit board etching processing. Aiming at the problems of time-consuming and laborious work and certain potential safety hazards when etching a printed circuit board, it includes an etching tank. On one side of the etching tank, there are two symmetrically distributed rotating seats. A transmission belt is arranged between the two rotating seats. An input motor cooperating with the transmission belt is installed on the outside of one of the rotating seats; Through the transportation of the transmission belt and the push of the push cylinder in the present invention, the printed circuit board is buffered by the T-shaped buffer plate, and the bottom surface of the printed circuit board is supported by the receiving rod. At the same time, the printed circuit board is positioned in multiple places by two elastic sheets and the blocking strip, so that the positioning and installation of the printed circuit board and the U-shaped flipping frame form an automated process. By pushing the pushing block, the printed circuit board slides off the U-shaped flipping frame, which can greatly improve the convenience of sliding material taking.

Description

Technical Field

[0001] The present invention belongs to the technical field of printed circuit board etching processing, and particularly relates to an assembly tool for printed circuit board processing. Background Art

[0002] A printed circuit board, also known as a PCB circuit board, is usually used for the electrical connection of electronic components. The main advantages of using a printed circuit board are that it greatly reduces wiring and assembly errors, and improves the automation level and production efficiency.

[0003] In the existing printed circuit board processing technology, it is necessary to etch the circuit board to be processed. When performing the etching work, the staff places the circuit board to be processed into a tank filled with chemical agents, and uses the chemical agents to etch the printed circuit board. After the etching is completed, the printed circuit board needs to be dried, and then subsequent processing is carried out on the assembly table. During the etching process, the following defects exist:

[0004] ① When the printed circuit board is being etched, it is usually manually positioned and then placed in the tank, which greatly increases the workload of the staff. Moreover, when it is being etched in the tank, it is easy for the staff to come into contact with the chemical agents in the tank, posing a certain safety hazard.

[0005] ② When the printed circuit board is being etched in the tank, chemical agents are likely to adhere to its surface. It is very inconvenient for the staff to take it out manually, and it is easy to be contaminated with chemical agents during subsequent assembly processing on the assembly table.

[0006] Therefore, an assembly tool for printed circuit board processing is needed to solve the problems of time-consuming and laborious etching of printed circuit boards and certain safety hazards in the prior art. Summary of the Invention

[0007] The purpose of the present invention is to provide an assembly tool for printed circuit board processing to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solution: An assembly tool for printed circuit board processing, including an etching tank. On one side of the etching tank, there are two symmetrically distributed rotating seats. A transmission belt is arranged between the two rotating seats. A conveying motor cooperating with the transmission belt is installed outside one of the rotating seats. An installation frame is fixed on the outer surface of the rotating seat far from the etching tank. A pushing cylinder is fixed on the top surface of the installation frame. A push block fixed to the output end of the pushing cylinder is arranged on the top surface of the transmission belt. A rotating shaft is rotatably connected to the inner wall of the etching tank. A servo motor coaxially connected to the rotating shaft is arranged on the outer surface of the etching tank. A fixing sleeve is tightly sleeved on the outer surface of the rotating shaft. A plurality of uniformly distributed U-shaped turning frames are fixed on the outer surface of the fixing sleeve. A receiving and buffering mechanism is arranged inside the U-shaped turning frame. A positioning mechanism located inside the U-shaped turning frame is arranged above the receiving and buffering mechanism. An assembly table is fixed on the side of the etching tank far from the transmission belt.

[0009] It should be noted in the solution that the receiving and buffering mechanism includes a positioning frame fixed to the inner surface of the U-shaped turning frame. A T-shaped buffer plate extending to the outer surface of the U-shaped turning frame is arranged outside the positioning frame. A plurality of uniformly distributed buffer springs are fixed between the inner surface of the T-shaped buffer plate and the inner wall of the positioning frame. Two symmetrically distributed mounting sleeves are fixed on the outer surface of the T-shaped buffer plate. A plurality of parallel distributed receiving rods are rotatably connected between the two mounting sleeves.

[0010] Furthermore, it is worth noting that a pushing block is fixed to the inner surface of the T-shaped buffer plate. The contact surface between the pushing block and the positioning frame is a matching plane. Anti-slip ridges are arranged on the outer surface of the pushing block.

[0011] Even further, it should be noted that the positioning mechanism includes a stop bar fixed to the top surface of the T-shaped buffer plate. Two symmetrically distributed positioning grooves are formed on the inner surface of the U-shaped turning frame. An elastic sheet is detachably connected to the inner wall of each positioning groove.

[0012] As a preferred implementation manner, the stop bar and the T-shaped buffer plate are vertically distributed. A chamfer is arranged on the inner surface of the stop bar near the bottom of the positioning groove.

[0013] As a preferred implementation manner, two symmetrically distributed guide blocks are arranged at the outer ends of the two elastic sheets. Both guide blocks are fixed to the top surface of the etching tank.

[0014] As a preferred implementation manner, the cross-sections of the two guide blocks are arranged in an eight-shaped manner. The cross-section of the elastic sheet is arranged in a U-shaped manner. The minimum distance between the two elastic sheets is equal to the distance between the inner walls of the U-shaped turning frame.

[0015] As a preferred embodiment, the top surface of the assembly table is parallel to the top surface of the conveyor belt, and the height of the top surface of the assembly table is higher than the height of the top surface of the conveyor belt.

[0016] Compared with the prior art, an assembly tool for printed circuit board processing provided by the present invention has at least the following beneficial effects:

[0017] (1) Through the conveying of the conveyor belt and the pushing of the pushing cylinder, the printed circuit board is buffered by the T-shaped buffer plate, the supporting rod supports its bottom surface, and at the same time, it is positioned at multiple points by two elastic sheets and a stop bar, so that the positioning and installation of the printed circuit board and the U-shaped flipping frame are automatically processed, greatly improving the convenience of its positioning and etching. And subsequently, by pushing the pushing block, the printed circuit board slides off the U-shaped flipping frame, which can greatly improve the convenience of its sliding material taking.

[0018] (2) When the U-shaped flipping frame rotates intermittently with the servo motor, the chemical reagent on the surface of the printed circuit board can be dripped, effectively avoiding the contamination of chemical agents during manual material taking.

[0019] (3) The setting of the guiding block, when the pushing cylinder drives the pushing block to push and position the printed circuit board, provides a certain degree of guidance, improving the accuracy of the positioning and installation of the printed circuit board and the U-shaped flipping frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the structural schematic diagram at the rotating shaft of the present invention;

[0022] Figure 3 is of the present invention Figure 2 is the enlarged structural schematic diagram of area A in;

[0023] Figure 4 is of the present invention Figure 2 is the enlarged structural schematic diagram of area B in;

[0024] Figure 5 is the sectional structural schematic diagram of the etching tank of the present invention;

[0025] Figure 6 is of the present invention Figure 5 is the enlarged structural schematic diagram of area C in;

[0026] Figure 7 is the partial structural schematic diagram at the positioning mechanism of the present invention.

[0027] In the figure: 1, etching tank; 2, rotating seat; 3, transmission belt; 4, conveying motor; 5, mounting bracket; 6, pushing cylinder; 7, pushing block; 8, rotating shaft; 9, servo motor; 10, fixing sleeve; 11, U-shaped flipping frame; 12, receiving and buffering mechanism; 121, positioning frame; 122, T-shaped buffer plate; 123, buffer spring; 124, mounting sleeve; 125, receiving rod; 13, positioning mechanism; 131, stop bar; 132, positioning groove; 133, elastic sheet; 14, assembly table; 15, pushing block; 16, guiding block. Detailed implementation manners

[0028] The present invention will be further described below in conjunction with embodiments.

[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] The following embodiments are used to illustrate the present invention, but cannot be used to limit the protection scope of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions. Any simple improvement to the method of the present invention under the premise of the concept of the present invention shall fall within the protection scope required by the present invention.

[0031] Please refer to Figure 1-7, the present invention provides an assembly tool for printed circuit board processing, including an etching tank 1. On one side of the etching tank 1, there are two symmetrically distributed rotating seats 2. A transmission belt 3 is arranged between the two rotating seats 2. A conveying motor 4 cooperating with the transmission belt 3 is installed outside one of the rotating seats 2. A mounting frame 5 is fixed on the outer surface of the rotating seat 2 away from the etching tank 1. A pushing cylinder 6 is fixed on the top surface of the mounting frame 5. A push block 7 fixed to the output end of the pushing cylinder 6 is arranged on the top surface of the transmission belt 3. A rotating shaft 8 is rotatably connected to the inner wall of the etching tank 1. A servo motor 9 coaxially connected to the rotating shaft 8 is arranged on the outer surface of the etching tank 1. A fixing sleeve 10 is tightly sleeved on the outer surface of the rotating shaft 8. A plurality of uniformly distributed U-shaped turning frames 11 are fixed on the outer surface of the fixing sleeve 10. A receiving and buffering mechanism 12 is arranged inside the U-shaped turning frame 11. A positioning mechanism 13 located inside the U-shaped turning frame 11 is arranged above the receiving and buffering mechanism 12. An assembly table 14 is fixed on one side of the etching tank 1 away from the transmission belt 3. The liquid level height of the chemical agent in the etching tank 1 is kept lower than the bottom horizontal section height of the rotating shaft 8. When the receiving and buffering mechanism 12 positions and installs the printed circuit board, it supports the bottom surface of the printed circuit board and buffers the front end surface. The positioning mechanism 13 is provided to enable the printed circuit board to be stably turned over and etched on the U-shaped turning frame 11. There are five U-shaped turning frames 11. Each time the servo motor 9 drives the rotating shaft 8 to rotate 72°, intermittent etching treatment of the printed circuit board can be realized.

[0032] Further, as Figure 3 , Figure 5 , Figure 6 and Figure 7 shown, it is specifically noted that the receiving and buffering mechanism 12 includes a positioning frame 121 fixed to the inner surface of the U-shaped turning frame 11. A T-shaped buffer plate 122 extending to the outer surface of the U-shaped turning frame 11 is arranged outside the positioning frame 121. A plurality of uniformly distributed buffer springs 123 are fixed between the inner surface of the T-shaped buffer plate 122 and the inner wall of the positioning frame 121. Two symmetrically distributed mounting sleeves 124 are fixed on the outer surface of the T-shaped buffer plate 122. A plurality of parallelly distributed receiving rods 125 are rotatably connected between the two mounting sleeves 124.

[0033] Further, as Figure 3 and Figure 6 shown, it is specifically noted that a pushing block 15 is fixed to the inner surface of the T-shaped buffer plate 122. The contact surface between the pushing block 15 and the positioning frame 121 is a matching plane. Anti-slip ridges are arranged on the outer surface of the pushing block 15. The anti-slip ridges improve the convenience of applying force to the pushing block 15, thereby improving the convenience of taking out the printed circuit board to a certain extent.

[0034] Further, as Figure 4 , Figure 6 andFigure 7 As shown, it is worth specifically explaining that the positioning mechanism 13 includes a stop bar 131 fixed to the top surface of the T-shaped buffer plate 122. Two symmetrically distributed positioning grooves 132 are formed on the inner surface of the U-shaped flipping frame 11. An elastic piece 133 is detachably connected to the inner wall of each positioning groove 132. When the printed circuit board is not positioned and installed, the outer end of the elastic piece 133 extends out of the positioning groove 132.

[0035] Furthermore, as Figure 6 shown, it is worth specifically explaining that the stop bar 131 and the T-shaped buffer plate 122 are vertically distributed, and a chamfer is provided on the inner surface of the stop bar 131 near the bottom of the positioning groove 132.

[0036] The working process of this solution is as follows: When etching the printed circuit board, the printed circuit board to be etched is driven by the conveying motor 4 and transported to the front end of the pushing cylinder 6 through the conveyor belt 3. At the same time, the U-shaped flipping frame 11 is driven by the servo motor 9, so that one of the U-shaped flipping frames 11 is flush with the upper surface of the conveyor belt 3. The pushing block 7 is driven by the pushing cylinder 6 to push the printed circuit board, so that the outer walls of both ends of the printed circuit board squeeze the two elastic pieces 133 until they contact the T-shaped buffer plate 122, and compress the buffer spring 123 in the positioning frame 121 until the front end of the printed circuit board is engaged and limited with the stop bar 131. Thus, the two elastic pieces 133 and the stop bar 131 form the positioning and installation of the printed circuit board and the U-shaped flipping frame 11. At the same time, the bottom surface of the printed circuit board is supported by the receiving rod 125, greatly improving the stability of its positioning and installation. At this time, it is driven by the servo motor 9 to rotate intermittently inward. By repeating the above operations, the printed circuit board rotates and contacts the chemical agent in the etching tank 1 until the pushing block 15 on the other U-shaped flipping frame 11 is completely presented. At this time, an outward force is applied to the pushing block 15 manually, so that the T-shaped buffer plate 122 drives the receiving rod 125 to move synchronously, so that the printed circuit board gradually detaches from the U-shaped flipping frame 11 until the end of the printed circuit board extends out of the outside of the U-shaped flipping frame 11, and it can be slid out of the U-shaped flipping frame 11.

[0037] According to the above working process, it can be known that through the conveyance of the conveyor belt 3 and the pushing of the pushing cylinder 6, the printed circuit board is buffered by the T-shaped buffer plate 122, supported by the receiving rod 125 at its bottom surface, and at the same time, it is positioned at multiple points by two elastic pieces 133 and the stop bar 131. As a result, the positioning and installation of the printed circuit board with the U-shaped flipping frame 11 form an automated process, greatly improving the convenience of its positioning and etching. And subsequently, by pushing the pushing block 15, the printed circuit board slides off the U-shaped flipping frame 11, which can greatly improve the convenience of its sliding material taking. Moreover, when the U-shaped flipping frame 11 rotates intermittently with the servo motor 9, the chemical reagent on the surface of the printed circuit board can be dripped, effectively avoiding the contamination of chemical agents during manual material taking.

[0038] Further, as shown in Figure 1 , Figure 2 and Figure 3 , it is specifically noted that two guiding blocks 16 are symmetrically arranged at the outer ends of the two elastic pieces 133. Both of the two guiding blocks 16 are fixed to the top surface of the etching tank 1. The cross-section of the two guiding blocks 16 is arranged in an inverted V shape, and the cross-section of the elastic piece 133 is arranged in a U shape. The minimum distance between the two elastic pieces 133 is equal to the distance between the inner walls of the U-shaped flipping frame 11. The setting of the guiding blocks 16, when cooperating with the pushing cylinder 6 to drive the push block 7 to push and position the printed circuit board, provides a certain degree of guidance, improving the accuracy of the positioning and installation of the printed circuit board with the U-shaped flipping frame 11.

[0039] Further, as shown in Figure 2 and Figure 4 , it is specifically noted that the top surface of the assembly table 14 is parallel to the top surface of the conveyor belt 3, and the height of the top surface of the assembly table 14 is higher than the height of the top surface of the conveyor belt 3. The setting of the height of the assembly table 14 facilitates the sliding and dripping of the chemical reagent on the surface of the printed circuit board after etching treatment through the height difference, preventing the contamination of chemical agents when manually taking out the printed circuit board by pushing the pushing block 15.

[0040] In summary, the pushing of the pushing cylinder 6 enables the printed circuit board to be positioned at multiple points by the T-shaped buffer plate 122, the receiving rod 125, the two elastic pieces 133 and the stop bar 131. As a result, the positioning and installation of the printed circuit board with the U-shaped flipping frame 11 form an automated process, greatly improving the convenience of its positioning and etching. When the U-shaped flipping frame 11 rotates intermittently with the servo motor 9, the chemical reagent on the surface of the printed circuit board can be dripped, effectively avoiding the contamination of chemical agents during manual material taking. And subsequently, by pushing the pushing block 15, the printed circuit board slides off the U-shaped flipping frame 11, which can greatly improve the convenience of its sliding material taking.

[0041] The conveying motor 4, the servo motor 9 and the pushing cylinder 6 can all be purchased on the market. The conveying motor 4, the servo motor 9 and the pushing cylinder 6 are all equipped with power supplies, which are mature technologies in this field and have been fully disclosed. Therefore, they will not be repeated in the specification.

[0042] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the field to which the present invention pertains. The terms such as "including" or "comprising" used in the present invention mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" do not limit to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembly tool for printed circuit board processing, including an etching tank (1), characterized in that, two symmetrically distributed rotating seats (2) are arranged on one side of the etching tank (1), a transmission belt (3) is arranged between the two rotating seats (2), and a conveying motor (4) matched with the transmission belt (3) is installed on the outer side of one of the rotating seats (2). An installation frame (5) is fixed on the outer surface of the rotating seat (2) far from the etching tank (1). A pushing cylinder (6) is fixed on the top surface of the installation frame (5). A pushing block (7) fixed to the output end of the pushing cylinder (6) is arranged on the top surface of the transmission belt (3). A rotating shaft (8) is rotatably connected to the inner wall of the etching tank (1), and a servo motor (9) coaxially connected to the rotating shaft (8) is arranged on the outer surface of the etching tank (1). A fixing sleeve (10) is tightly sleeved on the outer surface of the rotating shaft (8). A plurality of uniformly distributed U-shaped turning frames (11) are fixed on the outer surface of the fixing sleeve (10). A receiving and buffering mechanism (12) is arranged inside the U-shaped turning frame (11). A positioning mechanism (13) located inside the U-shaped turning frame (11) is arranged above the receiving and buffering mechanism (12). An assembly table (14) is fixed on one side of the etching tank (1) far from the transmission belt (3); The receiving and buffering mechanism (12) includes a positioning frame (121) fixed to the inner surface of the U-shaped turning frame (11). A T-shaped buffer plate (122) extending to the outer surface of the U-shaped turning frame (11) is arranged on the outer side of the positioning frame (121). A plurality of uniformly distributed buffer springs (123) are fixed between the inner surface of the T-shaped buffer plate (122) and the inner wall of the positioning frame (121). Two symmetrically distributed mounting sleeves (124) are fixed on the outer surface of the T-shaped buffer plate (122). A plurality of parallelly distributed receiving rods (125) are rotatably connected between the two mounting sleeves (124); The positioning mechanism (13) includes a stop strip (131) fixed to the top surface of the T-shaped buffer plate (122). Two symmetrically distributed positioning grooves (132) are formed on the inner surface of the U-shaped turning frame (11). An elastic piece (133) is detachably connected to the inner wall of each positioning groove (132). The outer ends of the two elastic pieces (133) are provided with two symmetrically distributed guide blocks (16). Both of the two guide blocks (16) are fixed to the top surface of the etching tank (1).

2. An assembly tool for printed circuit board processing according to claim 1, characterized in that: A pushing block (15) is fixed to the inner surface of the T-shaped buffer plate (122). The contact surface between the pushing block (15) and the positioning frame (121) is a matching plane, and anti-slip ridges are arranged on the outer surface of the pushing block (15).

3. An assembly tool for printed circuit board processing according to claim 1, characterized in that: The stop strip (131) and the T-shaped buffer plate (122) are vertically distributed. A chamfer is arranged on the inner surface of the bottom of the stop strip (131) close to the positioning groove (132).

4. An assembly tool for printed circuit board processing according to claim 1, characterized in that: The cross-sections of the two guiding blocks (16) are arranged in an eight-character shape, the cross-section of the elastic sheet (133) is arranged in a U shape, and the minimum distance between the two elastic sheets (133) is equal to the distance between the inner walls of the U-shaped flipping frame (11).

5. An assembly tool for printed circuit board processing according to claim 1, characterized in that: The top surface of the assembly table (14) is parallel to the top surface of the conveyor belt (3), and the height of the top surface of the assembly table (14) is higher than the height of the top surface of the conveyor belt (3).

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