An exposure apparatus for circuit boards

Abstract

This utility model relates to an exposure device for circuit boards in the field of circuit board processing technology. The upper end of the exposure machine is equipped with a clamping structure for limiting the circuit board. The clamping structure includes two clamping components for clamping the circuit board, and the two clamping components are arranged symmetrically from left to right. Each clamping component includes ball bearings for moving the circuit board in cooperation with the clamping components. The clamping structure also includes two moving blocks for controlling the left and right movement of the clamping components. This utility model, through the two symmetrically arranged clamping components, facilitates the clamping of circuit boards of different sizes. After clamping the circuit board, the multiple ball bearings allow the clamping components to move back and forth, reducing damage to the circuit board. After the limiting stage moves the circuit board into the exposure machine, it is conveniently positioned below the exposure lamp for exposure.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing technology, and in particular to an exposure device for circuit boards. Background Technology

[0002] In the process of manufacturing circuit boards, circuit patterns are transferred from negative or positive films to the circuit board using a mask. The principle is mainly that ultraviolet light irradiation causes a chemical reaction in the photosensitive material on the circuit board, thereby achieving the transfer of circuit patterns.

[0003] For example, a circuit board exposure device disclosed in Chinese patent application CN202420816143.9 specifically describes a process where, when a moving frame moves to the outside of the exposure chamber, a circuit board and a mask are placed inside, completing the loading process. As the bidirectional lead screw rotates, the distance between the two moving belts gradually shortens, clamping and fixing the circuit board to maintain its lateral centering. Then, by moving the front push plate, the circuit board is pushed from the front to the inner wall of the rear of the moving frame, thus fixing its position. However, this method of fixing the circuit board and mask presents the following technical problems:

[0004] In the above structure, after the two moving belts clamp the circuit board by approaching each other, the pusher pushes the circuit board to the rear wall of the moving frame. When the pusher pushes the circuit board, the circuit board clamped by the moving belt will rub against the moving belt, which can easily cause wear to the circuit board. If the friction between the edge of the circuit board and the moving belt is large, the pusher can also easily cause the circuit board to break. It can be seen that the above structure causes damage to the circuit board when moving it. Utility Model Content

[0005] To address the problem mentioned in the background section regarding damage caused to the circuit board during movement, this utility model provides the following technical solution:

[0006] An exposure apparatus for circuit boards, comprising an exposure machine;

[0007] The upper end of the exposure machine is equipped with a clamping structure for limiting the position of the circuit board.

[0008] The clamping structure includes two clamping components for clamping the circuit board, and the two clamping components are arranged symmetrically from left to right. Each clamping component includes a ball bearing for moving the circuit board in cooperation with the clamping component.

[0009] The clamping structure includes two moving blocks for controlling the left and right movement of the clamping assembly.

[0010] Furthermore, the upper end of the exposure machine is provided with a slide for the clamping structure to slide into the exposure machine, and the lower end of the middle part of the slide is provided with a groove.

[0011] Furthermore, a reciprocating lead screw is installed in the middle of the groove cavity to control the clamping structure to move back and forth, and a motor is installed at the front end of the reciprocating lead screw.

[0012] Furthermore, the clamping structure includes a limiting platform for limiting the circuit board. The limiting platform has a placement groove machined in the middle. A screw nut is installed at the lower end of the limiting platform to control the back-and-forth movement of the limiting platform in conjunction with a reciprocating screw. A reciprocating screw is installed at the front end of the limiting platform to control the left-and-right movement of the moving block. A motor is installed at one end of the reciprocating screw to control the rotation of the reciprocating screw.

[0013] Furthermore, a screw nut 2 is installed at the front end of the moving block to control the left and right movement of the moving block in conjunction with the reciprocating screw 2. A sliding groove 1 is provided on the side of the moving block near the clamping assembly. Sliding groove 2 is provided at both the upper and lower ends of the groove 1. An electric push rod for controlling the back and forth movement of the clamping assembly is installed at the front end of the groove 1. A magnetic block 1 is installed at the telescopic end of the electric push rod.

[0014] Furthermore, one end of the clamping assembly is equipped with a T-shaped slider that slides within slide groove one and slide groove two. A stop cover for limiting the ball is installed on one side of the T-shaped slider. Bolts are installed at both ends of the stop cover. A magnetic block two for magnetic attraction with magnetic block one is installed inside the T-shaped slider.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model uses two symmetrically arranged clamping components to facilitate the clamping of circuit boards of different sizes. After clamping the circuit board, the two clamping components are equipped with multiple ball bearings, which allows the clamping components to move back and forth after clamping the circuit board, reducing damage to the circuit board. After the limiting stage drives the circuit board into the exposure machine, it is convenient for the circuit board to be exposed under the exposure lamp. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the exposure machine of this utility model;

[0019] Figure 3 This is a schematic diagram of the clamping structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the limiting platform of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the movable block of this utility model;

[0022] Figure 6 This is a schematic diagram of the clamping assembly of this utility model;

[0023] Figure 7 This utility model Figure 3 A is shown in the magnified image.

[0024] The following is a list of component names represented by the various reference numerals in the attached figures:

[0025] 100-Exposure machine, 110-Slide rail, 111-Slide groove, 120-Reciprocating lead screw, 121-Motor.

[0026] 200-Clamping structure, 210-Limiting platform, 211-Placement groove, 212-Lead screw nut one, 213-Reciprocating lead screw two, 214-Motor two, 220-Moving block, 221-Lead screw nut two, 222-Slide groove one, 223-Slide groove two, 224-Electric push rod, 225-Magnetic block one, 230-Clamping assembly, 231-T-shaped slider, 232-Ball bearing, 233-Block, 234-Bolt, 235-Magnetic block two, 236-Limiting hole. Detailed Implementation

[0027] The preferred embodiments of this utility model are described in detail below, and a clear and complete explanation is given in conjunction with the accompanying drawings.

[0028] Please see Figures 1-7 This utility model provides an exposure device for circuit boards, including an exposure machine 100. A clamping structure 200 for limiting the circuit board is installed at the upper end of the exposure machine 100. A slide rail 110 is provided at the upper end of the exposure machine 100 for the clamping structure 200 to slide into the exposure machine 100. The circuit board is placed inside the clamping structure 200. After the clamping structure 200 containing the circuit board moves into the interior of the exposure machine 100 through the front end of the slide rail 110, the circuit board is exposed by an exposure lamp inside the exposure machine 100.

[0029] A groove 111 is provided at the lower middle part of the slide 110 to limit the clamping structure 200, so that the clamping structure 200 can only move back and forth inside the slide 110, so that the clamping structure 200 can drive the circuit board to move below the exposure lamp. A reciprocating screw 120 for controlling the back and forth movement of the clamping structure 200 is installed in the middle of the groove 111. A motor 121 is installed at the front end of the reciprocating screw 120. The reciprocating screw 120 is installed at the output end of the motor 121, so that after the motor 121 is started, the reciprocating screw 120 drives the clamping structure 200 to move back and forth, thereby facilitating the clamping structure 200 to enter and exit the body of the exposure machine 100.

[0030] The clamping structure 200 includes two clamping components 230 for clamping the circuit board, and the two clamping components 230 are arranged symmetrically from left to right. Each clamping component 230 includes a ball bearing 232 for moving the circuit board in cooperation with the clamping component 230. By setting the ball bearing 232, after the two clamping components 230 clamp the circuit board, the clamping components 230 can also move back and forth, so that the circuit board can move to the rear end of the limiting stage 210.

[0031] The clamping structure 200 includes two moving blocks 220 for controlling the left and right movement of the clamping assembly 230. The clamping structure 200 includes a limiting stage 210 for limiting the circuit board. The limiting stage 210 has a placement groove 211 machined in the middle. Before exposing the circuit board, the circuit board and the mask are placed in the placement groove 211. When placing the circuit board, the distance between the rear end of the circuit board and the rear wall of the placement groove 211 is less than the distance between the clamping assembly 230 and the rear wall of the limiting stage 210.

[0032] The lower end of the limiting platform 210 is equipped with a screw nut 212, which works in conjunction with the reciprocating screw 120 to control the forward and backward movement of the limiting platform 210. When the reciprocating screw 120 rotates, the screw nut 212 moves back and forth on the rod of the reciprocating screw 120, thereby synchronously driving the limiting platform 210 to move back and forth. The front end of the limiting platform 210 is equipped with a reciprocating screw 213, which controls the left and right movement of the moving block 220. The helical grooves at the left and right ends of the reciprocating screw 213 rotate in opposite directions. A motor 214 is installed at one end of the reciprocating screw 213 to control its rotation. The front end of the movable block 220 is equipped with a screw nut 221 for cooperating with the reciprocating screw 213 to control the left and right movement of the movable block 220. The screw nut 221 is sleeved on the reciprocating screw 213. After the motor 214 starts, the reciprocating screw 213 rotates synchronously, so that the screw nuts 221 at both ends of the reciprocating screw 213 drive the movable block 220 to move in the opposite direction, so as to drive the two clamping components 230 to move in the opposite direction. The two clamping components 230 move closer to each other to clamp the circuit board, and move further apart to release the clamping of the circuit board.

[0033] The movable block 220 has a sliding groove 222 on the side near the clamping assembly 230. The upper and lower ends of the sliding groove 222 have sliding grooves 223. An electric push rod 224 for controlling the clamping assembly 230 to move back and forth is installed at the front end of the sliding groove 222. A magnetic block 235 is installed at the telescopic end of the electric push rod 224 on the side near the clamping assembly 230.

[0034] One end of the clamping assembly 230 is equipped with a T-shaped slider 231 that slides within slide groove 1 222 and slide groove 223. When the T-shaped slider 231 is within slide groove 1 222 and slide groove 223, it limits the clamping assembly 230, which can only move back and forth. On the side of the T-shaped slider 231 near the telescopic end of the electric push rod 224, a magnetic block 235 that is magnetically attracted to magnetic block 1 225 is installed. Through the cooperation of magnetic block 1 225 and magnetic block 235, the clamping assembly 230 can be quickly disassembled.

[0035] A cover 233 for limiting the movement of the ball 232 is installed on one side of the T-shaped slider 231. Multiple limiting holes 236 for limiting the movement of the ball 232 are equally spaced in the middle of the cover 233. The diameter of the limiting holes 236 is smaller than the diameter of the ball 232. One side of the ball 232 protrudes from the limiting hole 236 so that the ball 232 can abut against one side of the groove wall of the slide 222. This allows the clamping assembly 230 to move back and forth after clamping the circuit board. Bolts 234 are installed at both ends of the cover 233. The cover 233 can be fixed to one side of the T-shaped slider 231 by the bolts 234.

[0036] In this invention, when exposing a circuit board, the mask and the circuit board are bonded together and placed in the placement groove 211. When the motor 214 is started, the reciprocating lead screw 213, together with the two lead screw nuts 221, drives the two moving blocks 220 to move closer to each other, so that the two clamping components 230 clamp the circuit board. After the electric push rod 224 is started, it pushes the T-shaped slider 231, so that the clamping components 230 move the circuit board closer to the rear wall of the placement groove 211, so that the circuit board can move under the exposure lamp inside the exposure machine 100 for exposure.

[0037] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this utility model. Furthermore, any non-creative modifications made to this utility model by those skilled in the art without inventive effort are still within the protection scope of this utility model.

Claims

1. An exposure apparatus for circuit boards, comprising an exposure machine (100), characterized in that: The upper end of the exposure machine (100) is equipped with a clamping structure (200) for limiting the circuit board; The clamping structure (200) includes two clamping components (230) for clamping the circuit board, and the two clamping components (230) are arranged symmetrically from left to right. The clamping components (230) include ball bearings (232) for moving the circuit board in cooperation with the clamping components (230). The clamping structure (200) includes two moving blocks (220) for controlling the left and right movement of the clamping assembly (230).

2. The exposure apparatus for circuit boards according to claim 1, characterized in that: The upper end of the exposure machine (100) is provided with a slide (110) for the clamping structure (200) to slide into the exposure machine (100), and the lower end of the middle part of the slide (110) is provided with a groove (111).

3. The exposure apparatus for circuit boards according to claim 2, characterized in that: The groove (111) has a reciprocating screw (120) installed in the middle of the groove cavity for controlling the clamping structure (200) to move back and forth, and a motor (121) is installed at the front end of the reciprocating screw (120).

4. The exposure apparatus for circuit boards according to claim 3, characterized in that: The clamping structure (200) includes a limiting platform (210) for limiting the circuit board. The limiting platform (210) has a placement groove (211) machined in the middle. The lower end of the limiting platform (210) is equipped with a screw nut (212) for cooperating with a reciprocating screw (120) to control the limiting platform (210) to move back and forth. The front end of the limiting platform (210) is equipped with a reciprocating screw (213) for controlling the moving block (220) to move left and right. One end of the reciprocating screw (213) is equipped with a motor (214) for controlling the reciprocating screw (213) to rotate.

5. The exposure apparatus for circuit boards according to claim 4, characterized in that: The front end of the movable block (220) is equipped with a screw nut (221) for cooperating with the reciprocating screw (213) to control the movable block (220) to move left and right. The movable block (220) has a sliding groove (222) on the side near the clamping assembly (230). The upper and lower ends of the groove of the sliding groove (222) are provided with sliding grooves (223). The front end of the groove of the sliding groove (222) is equipped with an electric push rod (224) for controlling the clamping assembly (230) to move back and forth. The telescopic end of the electric push rod (224) is equipped with a magnetic block (225).

6. The exposure apparatus for circuit boards according to claim 5, characterized in that: One end of the clamping assembly (230) is equipped with a T-shaped slider (231) that slides within slide groove one (222) and slide groove two (223). A cover (233) for limiting the ball (232) is installed on one side of the T-shaped slider (231). Bolts (234) are installed at both ends of the cover (233). A magnetic block two (235) for magnetic attraction with magnetic block one (225) is installed inside the T-shaped slider (231). Multiple limiting holes (236) are opened in the middle of the cover (233).

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