Automatic positioning and detecting device for screen printing plate

Abstract

The utility model discloses an automatic screen positioning and detecting device which comprises a detecting table, two clamping rods are arranged on the detecting table, the two clamping rods are arranged in a bilateral symmetry mode and are parallel to each other, a first driving assembly is arranged between the two clamping rods, and a second driving assembly is arranged between the two clamping rods. The first driving assembly is used for driving the two clamping rods to move in the opposite direction or the opposite direction, the clamping plates are arranged on the clamping rods, the two clamping plates slide on the clamping rods, and the second driving assembly is arranged on the clamping rods and used for driving the two clamping plates to move in the opposite direction or the opposite direction. According to the utility model, the problems that the screen positioning process is tedious and the clamping force is difficult to control when the screen is detected in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to screen positioning equipment field, especially, relate to a screen automatic positioning detection device. BACKGROUND

[0002] In order to guarantee printing quality, the screen is detected periodically, and the small damage of screen, such as small crack or local wear and tear, can be found in time.If these problems can be found in early stage, proper repair measures can be taken to prevent damage from further expansion.In the screen detection process, positioning is the basis to ensure that the whole screen can be detected comprehensively.Screen may have various sizes, and if there is no accurate positioning, some areas are easy to be missed in the detection process.Positioning can provide a fixed reference point and coordinate system for detection.When optical detection equipment (such as microscope, CCD camera, etc.) is used to check screen hole state, material defects and other conditions, accurate positioning can accurately determine the location of the problem.The existing screen detection table mainly uses edge positioning clamp and corner clamp to position the screen, and the clamp is fixed and clamped on the screen by manual control during positioning, and the clamping force is not easy to control and the clamp needs to be fixed one by one. SUMMARY

[0003] The utility model discloses a screen automatic positioning detection device, which can realize accurate positioning of the screen, and the clamping force is easy to control.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme: a screen automatic positioning detection device, which comprises a detection table, a clamping rod is arranged on the detection table, the clamping rod is provided with two, the two clamping rods are symmetrically arranged left and right, the two clamping rods are parallel to each other, a first driving assembly is arranged between the two clamping rods, the first driving assembly is used for driving the two clamping rods to move towards each other or away from each other, a clamping plate is arranged on the clamping rod, the clamping plate is provided with two, the two clamping plates are both slid on the clamping rod, a second driving assembly is arranged on the clamping rod, and the second driving assembly is used for driving the two clamping plates to move towards each other or away from each other at the same time.

[0005] As a further description of the above technical scheme: the first driving assembly comprises a first double-headed threaded lead screw, a guide rod and a first sliding block fixed at the rear end of the clamping rod and a sliding plate fixedly arranged at the front end of the clamping rod, the first double-headed threaded lead screw is rotatably arranged at the rear end of the detection table, the first sliding block is matched with the first double-headed threaded lead screw, the guide rod is fixedly arranged at the front end of the detection table, the guide rod is provided with a guide hole, the sliding plate slides in the guide hole, and the first driving assembly further comprises a servo motor, the output shaft of the servo motor is coaxially fixed with the first double-headed threaded lead screw.

[0006] As a further description of the above technical solution: the clamping rod is a rectangular stainless steel pipe, the second driving assembly comprises a second double-headed threaded lead screw rotatably arranged in the clamping rod, a driving gear is coaxially fixed to the front end of the second double-headed threaded lead screw, a driving gear slot corresponding to the driving gear is formed in the guide rod, the driving gear slot is engaged with the driving gear, a second sliding block is slidably arranged in the clamping rod, the second sliding block is threadedly matched with the second double-headed threaded lead screw, a clearance hole is formed in the clamping rod, and the second sliding block is connected with the clamping plate through the clearance hole.

[0007] As a further description of the above technical solution: a through hole along the length direction of the clamping rod is formed in the clamping plate, a guide rod is slidably arranged in the through hole, a pressing plate is fixedly arranged at the end of the guide rod away from the end of the clamping rod, and a spring is sleeved on the guide rod and located between the pressing plate and the clamping plate.

[0008] As a further description of the above technical solution: the upper end of the pressing plate is arranged in an arc shape towards the guide rod.

[0009] As a further description of the above technical solution: a pressing mechanism is arranged at the middle part of the clamping rod, the pressing mechanism comprises a pressing head, a trigger plate, a push rod and a push plate, the trigger plate is rotatably arranged on the clamping rod, a torsional spring is arranged at the rotation shaft of the trigger plate, the pressing head is elastically arranged on the trigger plate, a sliding hole is formed in the clamping rod, the push plate is slidably arranged in the sliding hole, the push rod is fixed on the push plate, and the push rod corresponds to the trigger plate.

[0010] As a further description of the above technical solution: the pressing head is made of rubber.

[0011] As a further description of the above technical solution: a proximity switch is arranged in the clamping rod, the proximity switch corresponds to the push plate, the proximity switch is triggered when the side of the push plate in contact with the screen printing plate is flush with the side of the clamping rod, and the proximity switch is electrically connected with the servo motor.

[0012] As described above, due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0013] (1) In the present application, the screen printing plate is directly placed on the detection table, and after the servo motor is started, the screen printing plate can be automatically centered and positioned under the action of the clamping rod and the clamping plate, and the pressing head of the pressing mechanism can also be linked to press the edge of the screen printing plate on the detection table, so that the screen printing plate as a whole can be stably positioned.

[0014] (2) In the present application, when the screen printing plate is not installed, the pressing head is away from the table top of the detection table under the action of the torsional spring, so that there is enough space to prevent the screen printing plate.

[0015] (3) The utility model discloses, second drive assembly and first drive assembly are all by servo motor power supply, and when the detection to screen is completed under the servo motor drive, clamping lever and pressboard and pressure head can remove the positioning clamping of screen.

[0016] (4) The utility model discloses, the spring that sets up between clamping plate and pressboard can adapt to the screen of different size. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the perspective view of the utility model;

[0018] Figure 2 It is the perspective view of the utility model; Figure 1 It is the partial close -up view of A in the utility model;

[0019] Figure 3 It is another angle perspective structure schematic diagram of the utility model;

[0020] Figure 4 It is the perspective structure schematic diagram of clamping lever of the utility model;

[0021] Figure 5 It is the sectional view of the utility model; Figure 4

[0022] Figure 6 It is another angle sectional view of the utility model; Figure 4

[0023] Figure 7 It is the working state perspective structure schematic diagram of the utility model.

[0024] Legend: 1, screen; 2, detection table; 3, mounting frame; 4, clamping lever; 5, first double -end threaded lead screw; 6, guide rod; 7, first sliding block; 8, sliding plate; 9, rotating seat; 10, guide hole; 11, servo motor; 12, clamping plate; 13, second double -end threaded lead screw; 14, drive gear; 15, drive gear slot; 16, second sliding block; 17, let - go hole; 18, guide rod; 19, pressboard; 20, spring; 21, pressure head; 22, trigger plate; 23, push rod; 24, push plate. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0026] Please refer to Figures 1-7 ​​The utility model provides a screen automatic positioning detection device technical scheme:

[0027] A screen automatic positioning detection device, it includes detection platform 2, be provided with mounting bracket 3 on detection platform 2, mounting bracket 3 is used to install detection equipment on, for example, microscope, CCD camera head etc. Detection platform 2 is provided with clamping rod 4, and clamping rod 4 is rectangular stainless steel pipe, clamping rod 4 is provided with two, two clamping rods 4 are symmetrically set up, and two clamping rods 4 are parallel to each other, and first drive assembly is set up between two clamping rods 4, and first drive assembly is used to drive two clamping rods 4 to move towards or opposite.

[0028] First drive assembly includes first double-end thread lead screw 5, guide rod 6 and the first sliding block 7 of fixedly being set in the rear end of clamping rod 4 and the sliding plate 8 of fixedly being set in the front end of clamping rod 4, and first double-end thread lead screw 5 rotationally sets up in the rear end of detection platform 2, and the rear end of detection platform 2 is provided with rotary base 9, and first double-end thread lead screw 5 rotationally sets up in rotary base 9, and first sliding block 7 is adapted with first double-end thread lead screw 5, and the front end of detection platform 2 is fixedly provided with guide rod 6, and guide hole 10 is opened in guide rod 6, and sliding plate 8 slides in guide hole 10, and further include servo motor 11, and the output shaft of servo motor 11 is coaxially fixed with first double-end thread lead screw 5, and servo motor 11 is fixed in rotary base 9. Servo motor 11 drives first double-end thread lead screw 5 to rotate, to drive two clamping rods 4 to move towards or opposite, realize the clamping of screen 1 in left and right direction.

[0029] Clamping rod 4 is provided with clamping plate 12, and clamping plate 12 is provided with two, and two clamping plates 12 all slide on the clamping rod, and the second drive assembly is set up on the clamping rod, and the second drive assembly is used to drive two clamping plates 12 to move towards or opposite simultaneously.

[0030] Second drive assembly includes second double-end thread lead screw 13 rotationally set in clamping rod 4, and the front end of second double-end thread lead screw 13 is coaxially fixed with drive gear 14, and drive gear 14 is opened in guide rod 6 with the drive gear slot 15 corresponding, and drive gear slot 15 is engaged with drive gear 14, and second sliding block 16 is slidably set in clamping rod 4, and second sliding block 16 is threadedly cooperated with second double-end thread lead screw 13, and the let hole 17 is opened in clamping rod 4, and second sliding block 16 is connected with clamping plate 12 through let hole 17. The through hole of clamping plate 12 is opened along the length direction of clamping rod 4, and guide rod 18 is slidably set in the through hole, and the end of guide rod 18 away from the end of clamping rod 4 is fixedly provided with pressing plate 19, and the upper end of pressing plate 19 is set as arc shape towards guide rod 6, and spring 20 is sleeved on guide rod 18, and spring 20 is located between pressing plate 19 and clamping plate 12.

[0031] A clamping mechanism is provided in the middle of the clamping rod 4. The clamping mechanism includes a clamping head 21, a trigger plate 22, a push rod 23, and a push plate 24. The clamping head 21 is made of rubber. The trigger plate 22 is rotatably mounted on the clamping rod 4. A torsion spring is provided at the rotation shaft of the trigger plate 22. The clamping head 21 is elastically mounted on the trigger plate 22. A sliding hole is provided on the clamping rod 4. The push plate 24 slides in the sliding hole. The push rod 23 is fixed on the push plate 24 and corresponds to the trigger plate 22.

[0032] A proximity switch (not shown in the figure) is provided inside the clamping rod 4. The proximity switch corresponds to the push plate 24. When the side of the push plate 24 that contacts the screen 1 is flush with the side of the clamping rod 4, the proximity switch is triggered. The proximity switch is electrically connected to the servo motor 11.

[0033] Working principle: In the initial state, such as Figure 1 As shown, the two clamping rods 4 are far apart from each other, the spring 20 between the pressure plate 19 and the clamping plate 12 is in a normally relaxed state, the two clamping plates 12 are far apart from each other, and the pressing head 21 is far away from the table surface of the testing table 2. Then, the screen 1 to be tested (in this embodiment, the screen 1 is arc-shaped) is placed on the testing table 2, and then the servo motor 11 is started. The start of the servo motor 11 causes the first double-ended threaded screw 5 to rotate, causing the two clamping rods 4 to move towards each other. While the clamping rods 4 are moving, the drive gear 14 rotates under the action of the drive tooth groove 15, causing the second double-ended threaded screw 13 to rotate, causing the clamping plates 12 to move towards each other. Under the action of the clamping rods 4 and the pressure plate 19, the screen 1 is moved to the center position of the testing table 2. During the above process, the pusher 24 moves along the sliding hole under the reaction force of the screen plate 1 and pushes the trigger plate 22 so that the clamping head 21 is pressed against the edge of the screen plate 1 until the pusher 24 is completely on the same plane as the clamping rod 4. At this time, the proximity switch is triggered, and the proximity switch causes the servo motor 11 to stop working and maintain this state.

[0034] After the screen plate 1 is inspected, the servo motor 11 is controlled to restore the clamping rod 4, pressure plate 19, clamping plate 12 and push plate 24 to their initial state, thereby releasing the clamping and positioning of the screen plate 1.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic screen printing plate positioning and detection device, characterized in that... The device includes a testing table (2), on which a clamping rod (4) is provided. There are two clamping rods (4), which are symmetrically arranged on the left and right sides and are parallel to each other. A first driving component is provided between the two clamping rods (4). The first driving component is used to drive the two clamping rods (4) to move towards each other or in opposite directions. A clamping plate (12) is provided on the clamping rod (4). There are two clamping plates (12), which slide on the clamping rod. A second driving component is provided on the clamping rod. The second driving component is used to drive the two clamping plates (12) to move towards each other or in opposite directions at the same time.

2. The automatic screen printing plate positioning and detection device according to claim 1, characterized in that: The first drive assembly includes a first double-ended threaded screw (5), a guide rod (6), a first slider (7) fixed to the rear end of the clamping rod (4), and a sliding plate (8) fixed to the front end of the clamping rod (4). The first double-ended threaded screw (5) is rotatably disposed at the rear end of the detection table (2). The first slider (7) is adapted to the first double-ended threaded screw (5). The front end of the detection table (2) is fixedly provided with a guide rod (6). A guide hole (10) is opened on the guide rod (6). The sliding plate (8) slides in the guide hole (10). The assembly also includes a servo motor (11). The output shaft of the servo motor (11) is coaxially fixed with the first double-ended threaded screw (5).

3. The automatic screen printing plate positioning and detection device according to claim 2, characterized in that: The clamping rod (4) is a rectangular stainless steel tube. The second driving assembly includes a second double-ended threaded screw (13) rotatably disposed in the clamping rod (4). A driving gear (14) is coaxially fixed at the front end of the second double-ended threaded screw (13). A driving tooth groove (15) corresponding to the driving gear (14) is opened on the guide rod (6). The driving tooth groove (15) meshes with the driving gear (14). A second slider (16) is slidably disposed in the clamping rod (4). The second slider (16) is threadedly engaged with the second double-ended threaded screw (13). A clearance hole (17) is opened on the clamping rod (4). The second slider (16) is connected to the clamping plate (12) through the clearance hole (17).

4. The automatic screen printing plate positioning and detection device according to claim 3, characterized in that: The clamping plate (12) has a through hole along the length of the clamping rod (4). A guide rod (18) is slidably disposed in the through hole. A pressure plate (19) is fixedly disposed at one end of the guide rod (18) away from the end of the clamping rod (4). A spring (20) is sleeved on the guide rod (18). The spring (20) is located between the pressure plate (19) and the clamping plate (12).

5. The automatic screen printing plate positioning and detection device according to claim 4, characterized in that: The upper end of the pressure plate (19) is configured to be arc-shaped toward the guide rod (6).

6. The automatic screen printing plate positioning and detection device according to claim 1, characterized in that: A clamping mechanism is provided in the middle of the clamping rod (4). The clamping mechanism includes a clamping head (21), a trigger plate (22), a push rod (23), and a push plate (24). The trigger plate (22) is rotatably mounted on the clamping rod (4). A torsion spring is provided at the rotation axis of the trigger plate (22). The clamping head (21) is elastically mounted on the trigger plate (22). A sliding hole is provided on the clamping rod (4). The push plate (24) slides in the sliding hole. The push rod (23) is fixed on the push plate (24). The push rod (23) corresponds to the trigger plate (22).

7. The automatic screen printing plate positioning and detection device according to claim 6, characterized in that: The clamping head (21) is made of rubber.

8. The automatic screen printing plate positioning and detection device according to claim 6, characterized in that: A proximity switch is provided inside the clamping rod (4). The proximity switch corresponds to the push plate (24). When the side of the push plate (24) that contacts the screen (1) is flush with the side of the clamping rod (4), the proximity switch is triggered. The proximity switch is electrically connected to the servo motor (11).

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