Automatic feeding and discharging mechanism suitable for PCB laser exposure machine

Abstract

The utility model relates to the technical field of feeding and discharging of exposure machines, in particular to an automatic feeding and discharging mechanism suitable for a PCB (printed circuit board) laser exposure machine, which comprises an exposure machine and a support frame, an exposure workbench is arranged on the exposure machine, and a feeding transmission mechanism and a discharging transmission mechanism are arranged on the support frame. The feeding conveying mechanism and the discharging conveying mechanism are located at the two ends of the supporting frame respectively, the exposure workbench is located between the feeding conveying mechanism and the discharging conveying mechanism, and the supporting frame is provided with a feeding arm used for conveying PCBs between the feeding conveying mechanism and the exposure workbench. The supporting frame is further provided with the discharging arm used for conveying the PCB between the exposure workbench and the discharging conveying mechanism, the feeding arm and the discharging arm are arranged on the supporting frame, and the feeding arm and the discharging arm operate independently and do not interfere with each other, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of loading and unloading of exposure machines, and in particular to an automatic loading and unloading mechanism suitable for a PCB board laser exposure machine. Background Art

[0002] During the fully automatic exposure process of PCB boards, from the unexposed PCB board to the completed PCB board exposure, transfer, loading, exposure and unloading are required in the middle.

[0003] For example, the Chinese utility model patent with authorization announcement number CN211628004U discloses an automatic loading and unloading device for an exposure machine, including a support table, a lifting unit, a mounting block, a moving unit and a vacuum unit; the support table: the top surface of the support table is provided with a finished product collection slot and an unfinished product collection slot; the lifting unit: the back plate of the lifting unit is slidably connected to the sliding hole on the right top surface of the support table, and the mounting block is fixed to the top of the back plate; the moving unit: the moving unit is installed on the side of the mounting block; the vacuum unit: the vacuum unit is installed at the bottom of the moving unit; wherein: it also includes a controller, the controller is fixed on the side of the support table, and the input end of the controller is electrically connected to the output end of the external power supply.

[0004] The automatic loading and unloading device of the exposure machine disclosed above uses a vacuum unit to move the PCB board from the unfinished product collection tank to the exposure machine for exposure, and then uses the vacuum unit to move the exposed PCB board to the finished product collection tank. Since the loading and unloading of the PCB board are both completed by the vacuum unit, the working efficiency of the loading and unloading device is low. Utility Model Content

[0005] In view of the above technical problems in the prior art, the utility model provides an automatic loading and unloading mechanism suitable for a PCB board laser exposure machine.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An automatic loading and unloading mechanism suitable for a PCB board laser exposure machine includes an exposure machine and a support frame. The exposure machine is provided with an exposure workbench. The support frame is provided with a loading and unloading transmission mechanism and a unloading transmission mechanism. The loading and unloading transmission mechanisms are respectively located at two ends of the support frame. The exposure workbench is located between the loading and unloading transmission mechanisms. The support frame is provided with a loading arm for transferring PCB boards between the loading and unloading transmission mechanisms and the exposure workbench. The support frame is also provided with a unloading arm for transferring PCB boards between the exposure workbench and the unloading transmission mechanism.

[0008] Preferably, the loading and unloading transmission mechanism and the unloading transmission mechanism each include a mounting bracket, a conveyor belt and several rollers. The several rollers are mounted on the mounting bracket and maintained on the same horizontal plane, and the distance between adjacent rollers is equal. The conveyor belt is laid on the several rollers for transporting PCB boards.

[0009] Preferably, the loading arm includes a base, a bottom arm mounted on the base which can be horizontally rotated, a first axis arm mounted on the bottom arm which can be longitudinally swung, a second axis arm mounted on the first axis arm which can be longitudinally swung and can rotate on its own, and a suction cup assembly for sucking up the PCB board is also provided on the end of the second axis arm away from the first axis arm.

[0010] Preferably, a linear motor module is also provided at the bottom of the base of the loading arm, which is used to drive the loading arm to move along the X-axis direction. The linear motor module includes a base fixed on the support frame and a sliding seat arranged on the base, and the base of the loading arm is arranged on the sliding seat.

[0011] Preferably, the unloading arm is arranged on the top of the support frame and is located above the loading arm. The unloading arm includes a mini cylinder and a suction cup assembly, and the suction cup assembly is arranged at the bottom of the mini cylinder.

[0012] Preferably, a screw sliding assembly is also provided on the top of the support frame, which includes a screw connecting the two ends of the support frame, a ball nut arranged on the screw and a drive motor fixed on the support frame for driving the screw to rotate. The ball nut is connected to the unloading arm, and the screw is driven to rotate by the drive motor, thereby driving the unloading arm to move along the X-axis direction.

[0013] Preferably, the suction cup assembly includes a truss, one end of the truss is connected to the second axis arm, and the other end is provided with two or more parallel rods, the rods are provided with arranged vacuum suction nozzles, and the distance between adjacent vacuum suction nozzles can be adjusted. The vacuum suction nozzle is connected to an external air pump to achieve suction or air jetting, thereby sucking the PCB board.

[0014] Preferably, a positioning camera is also provided on the top of the support frame, and the positioning camera is used in conjunction with the loading arm to position and correct the PCB board placed on the exposure workbench.

[0015] Preferably, the loading and unloading conveying mechanism and the unloading conveying mechanism on the support frame are located at the same horizontal height as the exposure workbench on the exposure machine.

[0016] Beneficial effects of the utility model:

[0017] The utility model discloses an automatic loading and unloading mechanism suitable for a PCB board laser exposure machine, comprising an exposure machine and a support frame, wherein an exposure workbench is provided on the exposure machine, and a loading and unloading transmission mechanism and a unloading transmission mechanism are provided on the support frame, the loading and unloading transmission mechanism and the unloading transmission mechanism are respectively located at two ends of the support frame, and the exposure workbench is located between the loading and unloading transmission mechanisms, a loading arm for transmitting PCB boards between the loading and unloading transmission mechanism and the exposure workbench is provided on the support frame, and a unloading arm for transmitting PCB boards between the exposure workbench and the unloading transmission mechanism is also provided on the support frame. By arranging the loading and unloading arms on the support frame, the loading and unloading arms operate independently and do not interfere with each other, thereby improving their working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of an automatic loading and unloading mechanism suitable for a PCB board laser exposure machine in an embodiment.

[0019] Figure 2 It is a three-dimensional diagram of the loading arm and linear motor module in the embodiment.

[0020] Figure 3 It is a three-dimensional diagram of the screw sliding assembly and the blanking arm in the embodiment.

[0021] Figure 4 3D is a three-dimensional diagram of the suction cup assembly in the embodiment.

[0022] Figure 5 It is a three-dimensional diagram of the loading and unloading conveying mechanism in the embodiment.

[0023] Reference numerals: 1, exposure machine; 101, exposure workbench;

[0024] 2. Support frame; 201. Loading and conveying mechanism; 202. Unloading and conveying mechanism; 211. Mounting bracket; 221. Conveyor belt; 231. Roller;

[0025] 203, loading arm; 213, base; 223, bottom arm; 233, first axis arm; 243, second axis arm; 253, suction cup assembly; 263, truss; 273, rod; 283, vacuum nozzle;

[0026] 204, linear motor module; 214, base; 224, sliding seat;

[0027] 205, unloading arm; 215, mini cylinder;

[0028] 206, screw rod sliding assembly; 216, screw rod; 226, ball nut; 236, drive motor;

[0029] 207. Position the camera. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0031] The present embodiment is an automatic loading and unloading mechanism suitable for a PCB laser exposure machine, such as Figures 1 to 5 As shown, the system comprises an exposure machine 1 and a support frame 2. The exposure machine 1 is provided with an exposure table 101 for exposing PCBs. The support frame 2 is provided with a loading and unloading mechanism 201 for loading PCBs and a unloading and unloading mechanism 202 for unloading PCBs. The loading and unloading mechanisms 201 and 202 are located at opposite ends of the support frame 2, with the exposure table 101 positioned between them. To ensure rapid and stable transfer of PCBs between the loading and unloading mechanisms 201, exposure table 101, and unloading mechanism 202, the loading and unloading mechanisms 201, 201, and 202 are positioned at the same level.

[0032] The loading and unloading conveyor mechanism 201 and the unloading and unloading conveyor mechanism 202 each include a mounting bracket 211, a conveyor belt 221, and rollers 231. The mounting bracket 211 is fixed to the support frame 2, and multiple rollers 231 are mounted on the mounting bracket 211. The conveyor belt 221 is laid across these multiple rollers 231 to transport PCBs. The multiple rollers 231 are positioned at the same height on the mounting bracket 211, and the distance between adjacent rollers 231 is constant to ensure the flatness of the conveyor belt 221, thereby ensuring smooth, non-tilted transport of the PCBs.

[0033] Furthermore, the support frame 2 is provided with a loading arm 203 for transferring materials between the loading and transport mechanism 201 and the exposure workbench 101. The loading arm 203 includes a base 213 fixed to the support frame 2, a bottom arm 223 mounted horizontally and rotatably on the base 213, a first shaft arm 233 mounted longitudinally and swung longitudinally on the bottom arm 223, and a second shaft arm 243 mounted longitudinally and rotatably on the first shaft arm 233. A suction cup assembly 253 for sucking up PCB boards is also provided at the end of the second shaft arm 243 away from the first shaft arm 233. A linear motor module 204 is also provided at the bottom of the base 213 of the loading arm 203. The linear motor module 204 is used to drive the loading arm 203 to move along the X-axis. The linear motor module 204 includes a base 214 fixed to the support frame 2 and a sliding seat 224 disposed on the base 214. The base 213 of the loading arm 203 is disposed on the sliding seat 224.

[0034] The suction cup assembly 253 is detachably connected to the second shaft arm 243. The suction cup assembly 253 includes a truss 263. One end of the truss 263 is connected to the second shaft arm 243. The other end of the truss 263 is provided with two or more parallel rods 273. The rods 273 are provided with arranged vacuum suction nozzles 283, and the distance between adjacent vacuum suction nozzles 283 can be adjusted. The vacuum suction nozzle 283 is connected to an external air pump to achieve suction or air jetting, thereby sucking the PCB board.

[0035] Furthermore, a positioning camera 207 is provided on the support frame 2. The positioning camera 207 is set on the top of the support frame 2 and is located directly above the exposure workbench 101. The positioning camera 207 cooperates with the loading arm 203 to position and correct the unexposed PCB board.

[0036] During use, when the unexposed PCB board is sent into the loading and conveying mechanism 201 by the front-end equipment, the loading and conveying mechanism 201 starts to run and transports the PCB board placed thereon toward the exposure workbench 101. When the positioning camera 207 detects the PCB board, the loading and conveying mechanism 201 stops running. At this time, the loading arm 203 will move the PCB board in the loading and conveying mechanism 201 to the top of the exposure workbench 101 through the suction cup assembly 253. The positioning camera 207 will position the PCB board to determine the correction range required by the loading arm 203. When the correction is completed, the loading arm 203 places the PCB board on the exposure workbench 101, and the exposure machine 1 performs exposure processing.

[0037] Furthermore, the support frame 2 is equipped with a discharge arm 205 for transferring materials between the exposure worktable 101 and the discharge transport mechanism 202. Discharge arm 205 is mounted on the top of the support frame 2 and includes a mini-cylinder 215 and a suction cup assembly 253. The suction cup assembly 253 is mounted on the bottom of the mini-cylinder 215. Also mounted on the top of the support frame 2 is a screw slide assembly 206 that drives the discharge arm 205. The screw slide assembly 206 includes a screw 216 connecting the two ends of the support frame 2, a ball nut 226 mounted on the screw 216, and a drive motor 236 fixed to the support frame 2 for rotating the screw 216. The ball nut 226 is connected to the discharge arm 205 and, through the drive motor 236, drives the screw 216 to rotate, thereby driving the discharge arm 205 to move along the X-axis.

[0038] During use, after the PCB board is exposed, the loading arm 203 will rotate to the other side to avoid interfering with the unloading arm 205. At this time, the mini cylinder 215 will drive the suction cup assembly 253 at its bottom to move downward, sucking up the PCB board placed on the exposure workbench 101, and then drive the lead screw 216 to rotate through the driving motor 236 to move the unloading arm 205 toward the unloading conveying mechanism 202. When the PCB board moves above the unloading conveying mechanism 202, the suction cup assembly 253 releases the PCB board and places it on the unloading conveying mechanism 202. Then, the unloading conveying mechanism 202 is started to transport the PCB board to the subsequent process to complete the unloading.

[0039] In the description of the present invention, it is obvious that the embodiments described are only some embodiments of the present invention, rather than all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention as claimed, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., etc., are used solely for distinction and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections. They may refer to mechanical connections or electrical connections. They may refer to connections directly or indirectly through an intermediary, or they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

Claims

1. An automatic loading and unloading mechanism suitable for a PCB laser exposure machine, comprising an exposure machine (1) and a support frame (2), characterized in that: An exposure workbench (101) is provided on the exposure machine (1), and a loading and unloading transmission mechanism (201) and a unloading transmission mechanism (202) are provided on the support frame (2). The loading and unloading transmission mechanism (201) and the unloading transmission mechanism (202) are respectively located at two ends of the support frame (2), and the exposure workbench (101) is located between the loading and unloading transmission mechanism (201) and the unloading transmission mechanism (202). A loading arm (203) for transmitting PCB boards between the loading and unloading transmission mechanism (201) and the exposure workbench (101) is provided on the support frame (2), and an unloading arm (205) for transmitting PCB boards between the exposure workbench (101) and the unloading transmission mechanism (202) is also provided on the support frame (2).

2. The automatic loading and unloading mechanism for a PCB laser exposure machine according to claim 1, characterized in that: The loading and unloading transmission mechanism (201) and the unloading and unloading transmission mechanism (202) each comprise a mounting bracket (211), a conveyor belt (221) and a plurality of rollers (231). The plurality of rollers (231) are mounted on the mounting bracket (211) and maintained on the same horizontal plane, with the distances between adjacent rollers (231) being equal. The conveyor belt (221) is laid on the plurality of rollers (231) for transporting PCB boards.

3. The automatic loading and unloading mechanism for a PCB laser exposure machine according to claim 1, characterized in that: The loading arm (203) comprises a base (213), a bottom arm (223) mounted on the base (213) and capable of horizontal rotation, a first shaft arm (233) mounted on the bottom arm (223) and capable of longitudinal swinging, a second shaft arm (243) mounted on the first shaft arm (233) and capable of longitudinal swinging and self-rotation, and a suction cup assembly (253) for sucking up a PCB board is further provided on one end of the second shaft arm (243) away from the first shaft arm (233).

4. The automatic loading and unloading mechanism for a PCB laser exposure machine according to claim 3, characterized in that: A linear motor module (204) is further provided at the bottom of the base (213) of the loading arm (203). The linear motor module (204) is used to drive the loading arm (203) to move along the X-axis direction. The linear motor module (204) includes a base (214) fixed on the support frame (2) and a sliding seat (224) arranged on the base (214). The base (213) of the loading arm (203) is arranged on the sliding seat (224).

5. The automatic loading and unloading mechanism for a PCB laser exposure machine according to claim 1, characterized in that: The unloading arm (205) is arranged on the top of the support frame (2) and is located above the loading arm (203). The unloading arm (205) includes a mini cylinder (215) and a suction cup assembly (253). The suction cup assembly (253) is arranged at the bottom of the mini cylinder (215).

6. The automatic loading and unloading mechanism for a PCB laser exposure machine according to claim 5, characterized in that: A screw rod sliding assembly (206) is further provided on the top of the support frame (2). The screw rod sliding assembly (206) comprises a screw rod (216) connected to both ends of the support frame (2), a ball nut (226) arranged on the screw rod (216), and a drive motor (236) fixed on the support frame (2) for driving the screw rod (216) to rotate. The ball nut (226) is connected to the blanking arm (205), and the screw rod (216) is driven to rotate by the drive motor (236), thereby driving the blanking arm (205) to move along the X-axis direction.

7. The automatic loading and unloading mechanism for a PCB laser exposure machine according to claim 3 or 5, characterized in that: The suction cup assembly (253) includes a truss (263), one end of the truss (263) is connected to the second shaft arm (243), and the other end is provided with two or more parallel rods (273), the rods (273) are provided with arranged vacuum suction nozzles (283), and the distance between adjacent vacuum suction nozzles (283) can be adjusted. The vacuum suction nozzles (283) are connected to an external air pump to achieve suction or air ejection, thereby sucking the PCB board.

8. The automatic loading and unloading mechanism for a PCB laser exposure machine according to claim 6, characterized in that: A positioning camera (207) is also provided on the top of the support frame (2). The positioning camera (207) is used in conjunction with the loading arm (203) to position and correct the PCB board placed on the exposure workbench (101).

9. The automatic loading and unloading mechanism for a PCB laser exposure machine according to claim 1, characterized in that: The loading and unloading conveying mechanism (201) and the unloading and unloading conveying mechanism (202) on the supporting frame (2) are located at the same level as the exposure workbench (101) on the exposure machine (1).

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