Feeding structure of circuit board exposure machine

Abstract

The utility model discloses a feeding structure of a circuit board exposure machine, which comprises a bottom plate, the middle part of the upper end of the bottom plate is fixedly connected with a supporting column, the side of the supporting column is provided with an air pump, and the air pump is mutually connected with a suction cup through a first communicating air pipe; the suction cups are located in guide grooves, the guide grooves are formed in the bottom plate, the two suction cups located on one side of the supporting column are connected through a connecting frame, and a transmission lead screw is installed on the connecting frame in a penetrating mode. A containing groove is formed in the bottom plate, a butt clamp positioning mechanism is installed in the containing groove, and the butt clamp positioning mechanism is connected with the first communicating air pipe through a second communicating air pipe. According to the feeding structure of the circuit board exposure machine, the position of the suction cup can be conveniently adjusted according to the sizes of different substrates, so that the suction cup is suitable for fixing and using of the substrates with different sizes, meanwhile, the substrates can be positioned in two modes of adsorption and butt clamping, and the stability of the substrates during feeding is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a feeding structure of a circuit board exposure machine. Background Art

[0002] The exposure machine is a complex semiconductor processing equipment that integrates electronic optics, electrical, mechanical, vacuum, and computer technologies. It is usually used in circuit board processing. In order to improve the working efficiency of the exposure machine, most of them will use a loading structure to clamp and load the substrate, thereby replacing manual loading.

[0003] For example, an auxiliary loading device for a circuit board exposure machine with publication number CN217577320U relates to the field of circuit board manufacturing, and includes a frame and a board storage table fixed to the frame, the frame is provided with a mounting table, the lower end of the mounting table is provided with an adsorption component for adsorbing the circuit board, the upper end of the mounting table is provided with a first driving component for moving the mounting table in a vertical direction, the frame is provided with a sliding table at the upper end of the mounting table, the first driving component is fixedly connected to the sliding table, the frame is provided with a sliding assembly for making the sliding table slide, the sliding table slides in a horizontal direction, and the frame is provided with a driving assembly for driving the sliding table to slide.

[0004] The above-mentioned prior art has the following technical problems: when the existing loading device is loading, the substrate is adsorbed by the adsorption part at the bottom of the mounting table; however, the position of the adsorption part is fixed during use, so that it can only be adsorbed at a fixed position; when the sizes of the substrates to be adsorbed are different, the adsorption part cannot be adjusted; at the same time, in the process of adsorbing and loading the substrate, it can only be fixed by a single adsorption method, and the overall fixing effect is poor; when the adsorption part becomes loose and leaks, the loaded substrate is easily caused to fall off.

[0005] Therefore, we propose a feeding structure of a circuit board exposure machine to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a feeding structure of a circuit board exposure machine to solve the problem raised in the above-mentioned background technology that the existing feeding devices on the market adsorb the substrate through the adsorption part at the bottom of the mounting table during feeding, but the position of the adsorption part itself is fixed during use, resulting in adsorption only at a fixed position. When the sizes of the substrates to be adsorbed are different, the adsorption part cannot be adjusted. At the same time, in the process of adsorbing and feeding the substrate, it can only be fixed by a single adsorption method, and the overall fixing effect is poor. When the adsorption part becomes loose and leaks, the loaded substrate is easily caused to fall off.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a feeding structure of a circuit board exposure machine, comprising a bottom plate, a support column is fixedly connected to the middle of the upper end of the bottom plate, and an air pump is installed on the side of the support column, and the air pump is connected to the suction cup through a first connecting air pipe;

[0008] Also includes:

[0009] The suction cup is located inside the guide groove, and the guide groove is opened on the bottom plate. The two suction cups located on one side of the support column are connected to each other through a connecting frame. A transmission screw is installed through the connecting frame, and the transmission screw is fixedly installed on the output end of the dual-axis motor. The threads on the transmission screws on the left and right sides of the dual-axis motor have opposite directions.

[0010] The bottom plate is provided with a receiving groove, and a clamping positioning mechanism is installed inside the receiving groove. The clamping positioning mechanism is connected to each other through the second communicating air pipe and the first communicating air pipe.

[0011] Preferably, a plurality of suction cups are evenly distributed on the bottom plate, and the suction cups are symmetrically arranged about the longitudinal center axis of the bottom plate.

[0012] By adopting the above technical solution, the four corners of the substrate can be easily adsorbed and positioned by using a plurality of suction cups on the bottom plate.

[0013] Preferably, the outer wall of the suction cup and the inner wall of the guide groove fit each other, the suction cup and the guide groove are slidably connected, and the cross-section of the guide groove is set to a rectangular structure.

[0014] By adopting the above technical solution, the initial position of the suction cup can be easily adjusted by the movement of the suction cup inside the guide groove. At the same time, the movement of the suction cup inside the guide groove can prevent the suction cup from rotating synchronously with the transmission screw.

[0015] Preferably, the first communicating air pipe and the second communicating air pipe are both made of rubber hose material, and the first communicating air pipe and the second communicating air pipe are internally connected to each other, and the first communicating air pipe is connected to the interior of the suction cup.

[0016] By adopting the above technical solution, when the air pump sucks air through the first communicating air pipe, negative pressure can be generated inside the suction cup, so that the bottom of the suction cup is adsorbed on the substrate.

[0017] Preferably, the clamping positioning mechanism includes a guide column, and the guide column is fixedly installed inside the accommodating groove, and the interior of the guide column is connected to the second connecting air pipe, a movable plate is installed on the guide column, and the movable plate is inserted into the rod body inside the guide column and is connected to the interior of the guide column through a return spring, a limiting plate is installed through the movable plate, and the limiting plate is connected to the movable plate through an auxiliary spring.

[0018] By adopting the above technical solution, the limiting plate can be moved on the movable plate when a force is applied to it.

[0019] Preferably, the end of the rod body of the movable plate inserted into the interior of the guide column forms a seamless sliding connection structure with the interior of the guide column through a circumferentially bonded sealing ring, and the longitudinal section of the movable plate is set to an "L"-shaped structure.

[0020] By adopting the above technical solution, the sealing performance with the inside of the guide column can be ensured by the sealing ring that is circumferentially bonded and fixed to the rod body on the movable plate.

[0021] Preferably, the limiting plate and the movable plate are vertically distributed, and the limiting plate forms an elastic telescopic structure through an auxiliary spring and the movable plate.

[0022] By adopting the above technical solution, the elastic deformation of the auxiliary spring can enable the limit plate to return to its original position after moving on the movable plate.

[0023] Compared with the prior art, the utility model has the following beneficial effects: the loading structure of the circuit board exposure machine can adjust the position of the suction cup according to the size of the substrate, so that it can adapt to the fixed use of substrates of different sizes, and can position the substrate by adsorption and clamping, so as to ensure the stability of the substrate during loading;

[0024] 1. A suction cup is provided, and air can be sucked inside the suction cup through the first connecting air pipe by starting the air pump, thereby generating negative pressure inside the suction cups evenly distributed on the bottom plate, and then the substrate is adsorbed and fixed by the suction cups;

[0025] 2. A connecting frame is provided. The connecting frames connected by threads on the left and right sides can be relatively moved by rotating the transmission screw rod. The relative movement of the connecting frame can move the suction cup inside the guide groove. The initial position of the suction cup can be adjusted by the movement of the suction cup inside the guide groove to adapt to the adsorption and fixation of substrates of different sizes;

[0026] 3. A guide column is provided. When the first communicating air pipe absorbs air, the second communicating air pipe absorbs the internal airflow of the guide column because the second communicating air pipe and the first communicating air pipe are interconnected. The movable plate moves toward the inner side of the guide column. After the movable plate moves, the middle part of the substrate can be clamped and positioned.

[0027] 4. A limit plate is set. When the movable plate moves to clamp and position the middle part of the substrate, the limit plate on the movable plate first contacts the middle part of the substrate. After the limit plate is subjected to force, it can move on the movable plate. After the limit plate moves on the movable plate, the elastic deformation of the auxiliary spring can play a clamping and buffering role, thereby avoiding damage to the substrate caused by excessive clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the suction cup and guide groove structure of the utility model;

[0030] Figure 3 This is a schematic diagram of the cross-sectional structure of the support column of the utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the connecting frame and the transmission screw rod of the utility model;

[0032] Figure 5 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0033] Figure 6 This is a schematic diagram of the cross-sectional structure of the guide column of the utility model.

[0034] In the figure: 1. bottom plate; 2. support column; 3. air pump; 4. first connecting air pipe; 5. suction cup; 6. guide groove; 7. connecting frame; 8. transmission screw; 9. dual-axis motor; 10. accommodating groove; 11. second connecting air pipe; 12. clamping positioning mechanism; 121. guide column; 122. moving plate; 123. reset spring; 124. limit plate; 125. auxiliary spring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Example 1: Please refer to Figure 1-Figure 6 In the existing loading device, the substrate is adsorbed by the adsorbent at the bottom of the mounting table during loading. However, the position of the adsorbent is fixed during use, so that adsorption can only be performed at a fixed position. When the size of the substrate to be adsorbed is different, the adsorbent cannot be adjusted. In order to solve this technical problem, the present embodiment discloses the following technical contents;

[0037] A feeding structure of a circuit board exposure machine includes a base plate 1, a support column 2 is fixedly connected to the middle of the upper end of the base plate 1, and an air pump 3 is installed on the side of the support column 2, and the air pump 3 is connected to a suction cup 5 through a first communicating air pipe 4; the suction cup 5 is located inside a guide groove 6, and the guide groove 6 is provided on the base plate 1, and two suction cups 5 located on one side of the support column 2 are connected to each other through a connecting frame 7, and a transmission screw 8 is installed through the connecting frame 7, and the transmission screw 8 is fixedly installed on the output end of a dual-axis motor 9; there are multiple suction cups 5 evenly distributed on the base plate 1, and the suction cups 5 are symmetrically arranged about the longitudinal center axis of the base plate 1. The outer wall of the suction cup 5 and the inner wall of the guide groove 6 are in contact with each other, and the suction cup 5 and the guide groove 6 are slidably connected, and the cross section of the guide groove 6 is set to a rectangular structure. The first communicating air pipe 4 and the second communicating air pipe 11 are both set to be made of rubber hose material, and the first communicating air pipe 4 and the second communicating air pipe 11 are connected to each other, and the first communicating air pipe 4 and the suction cup 5 are connected to each other.

[0038] When it is necessary to adsorb and fix the substrate, the support column 2 is fixed on the robot arm, and the support column 2 and the bottom plate 1 are controlled by the robot arm to move so that the bottom of the suction cup 5 on the bottom plate 1 overlaps the substrate, and then the air pump 3 absorbs the airflow inside the suction cup 5 through the first connecting air pipe 4. At this time, a negative pressure is generated inside the suction cup 5, so that the substrate is adsorbed and positioned. After the substrate is positioned, the substrate adsorbed under the bottom plate 1 is transferred to the exposure machine by the robot for automatic loading. When it is necessary to adsorb substrates of different sizes, the dual-axis motor 9 is turned on. After the dual-axis motor 9 is turned on, the transmission screw 8 can be rotated. The rotation of the transmission screw 8 can make the connecting frames 7 on the left and right sides move relatively. The movement of the connecting frame 7 can make the suction cup 5 move and adjust inside the guide groove 6, and the initial position of the suction cup 5 is adjusted to adapt to the adsorption and fixation of substrates of different sizes.

[0039] Embodiment 2: The technical content disclosed in this embodiment is a further improvement on the above embodiment 1. In the process of adsorbing and loading the substrate, it can only be fixed by a single adsorption method, and the overall fixing effect is poor. When the adsorption part becomes loose and leaks, it is easy to cause the loaded substrate to fall. In order to solve this technical problem, this embodiment discloses the following technical content, such as Figure 1-Figure 6 As shown;

[0040] The bottom plate 1 is provided with a receiving groove 10, and a clamping positioning mechanism 12 is installed inside the receiving groove 10, and the clamping positioning mechanism 12 is connected to the first communicating air pipe 4 through the second communicating air pipe 11. The clamping positioning mechanism 12 includes a guide column 121, and the guide column 121 is fixedly installed inside the receiving groove 10, and the inside of the guide column 121 is connected to the second communicating air pipe 11, and a moving plate 122 is installed on the guide column 121, and the rod body of the moving plate 122 inserted into the inside of the guide column 121 is connected to the inside of the guide column 121 through a return spring 123, and the end of the rod body of the moving plate 122 inserted into the inside of the guide column 121 forms a seamless sliding connection structure with the inside of the guide column 121 through a circumferentially bonded sealing ring, and the longitudinal section of the moving plate 122 is set to an "L"-shaped structure.

[0041] When the air pump 3 sucks air through the first communicating air pipe 4, since the first communicating air pipe 4 and the second communicating air pipe 11 are connected to each other, the second communicating air pipe 11 can also absorb the airflow inside the guide column 121. After the airflow inside the guide column 121 is absorbed, the movable plate 122 moves toward the inner side of the guide column 121. Through the movement of the movable plate 122, the middle part of the substrate can be further clamped and limited, thereby ensuring the stability of the substrate being clamped during loading.

[0042] Embodiment 3: The technical content disclosed in this embodiment is a further improvement made on the basis of the above-mentioned embodiments 1 and 2. When clamping and positioning the substrate, it is not convenient to play a clamping buffer role, which leads to the substrate being easily damaged due to excessive clamping force after hard clamping. In order to solve this technical problem, this embodiment discloses the following technical content, such as Figure 2 , Figure 5 and Figure 6 As shown;

[0043] The movable plate 122 is penetrated by a limit plate 124, and the limit plate 124 is connected to the movable plate 122 through an auxiliary spring 125. The limit plate 124 and the movable plate 122 are vertically distributed, and the limit plate 124 forms an elastic telescopic structure through the auxiliary spring 125 and the movable plate 122.

[0044] When the movable plate 122 moves toward the inner side of the bottom plate 1 to fix the substrate, after the movable plate 122 moves, the limiting plate 124 thereon contacts with the middle part of the side edge of the substrate, and the limiting plate 124 is able to move on the movable plate 122 after being subjected to force, and the movement of the limiting plate 124 can cause its auxiliary spring 125 to undergo elastic deformation, and the elastic deformation of the auxiliary spring 125 can play a clamping and buffering role, thereby preventing damage to the substrate caused by excessive clamping force.

[0045] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A feeding structure of a circuit board exposure machine, comprising a base plate (1), a support column (2) being fixedly connected to the middle of the upper end of the base plate (1), and an air pump (3) being installed on the side of the support column (2), and the air pump (3) being connected to a suction cup (5) via a first connecting air pipe (4); It is characterized in that Also includes: The suction cup (5) is located inside the guide groove (6), and the guide groove (6) is formed on the bottom plate (1). The two suction cups (5) located on one side of the support column (2) are connected to each other via a connecting frame (7). A transmission screw (8) is installed through the connecting frame (7), and the transmission screw (8) is fixedly installed on the output end of the double-axis motor (9). The threads on the transmission screws (8) on the left and right sides of the double-axis motor (9) have opposite directions. The bottom plate (1) is provided with a receiving groove (10), and a clamping positioning mechanism (12) is installed inside the receiving groove (10), and the clamping positioning mechanism (12) is connected to the first communicating air pipe (4) via the second communicating air pipe (11).

2. The feeding structure of a circuit board exposure machine according to claim 1, characterized in that: A plurality of suction cups (5) are evenly distributed on the bottom plate (1), and the suction cups (5) are symmetrically arranged with respect to the longitudinal center axis of the bottom plate (1).

3. The feeding structure of a circuit board exposure machine according to claim 1, characterized in that: The outer wall of the suction cup (5) and the inner wall of the guide groove (6) fit each other, the suction cup (5) and the guide groove (6) are slidably connected, and the cross section of the guide groove (6) is arranged to be a rectangular structure.

4. The feeding structure of a circuit board exposure machine according to claim 1, characterized in that: The first communicating air pipe (4) and the second communicating air pipe (11) are both made of rubber hose material, and the interiors of the first communicating air pipe (4) and the second communicating air pipe (11) are mutually connected, and the interiors of the first communicating air pipe (4) and the suction cup (5) are connected.

5. The feeding structure of a circuit board exposure machine according to claim 1, characterized in that: The clamping positioning mechanism (12) comprises a guide column (121), and the guide column (121) is fixedly installed inside the accommodating groove (10), and the interior of the guide column (121) is connected to the second communicating air pipe (11), a movable plate (122) is installed on the guide column (121), and the movable plate (122) is inserted into the rod body inside the guide column (121) and is connected to the interior of the guide column (121) through a return spring (123), and a limiting plate (124) is installed through the movable plate (122), and the limiting plate (124) is connected to the movable plate (122) through an auxiliary spring (125).

6. The feeding structure of a circuit board exposure machine according to claim 5, characterized in that: The movable plate (122) is inserted into the rod end of the guide column (121) to form a seamless sliding connection structure with the interior of the guide column (121) via a circumferentially bonded sealing ring, and the longitudinal section of the movable plate (122) is set to an "L"-shaped structure.

7. The feeding structure of a circuit board exposure machine according to claim 5, characterized in that: The limiting plate (124) and the movable plate (122) are vertically distributed, and the limiting plate (124) forms an elastic telescopic structure through the auxiliary spring (125) and the movable plate (122).

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