Precise alignment device of screen printing machine

Abstract

The utility model discloses an accurate alignment device for a screen printing machine, which comprises a bottom plate and a movable transverse plate arranged at the upper part of the bottom plate, a movable moving block is arranged at the bottom of the transverse plate, a detachable CCD (Charge Coupled Device) camera body is arranged at the bottom of the moving block, and an adjustable protective shell is arranged at the bottom of the CCD camera body. Through mutual cooperation of the moving block, the protective shell, the base, the inserting groove, the inserting block, the fixing groove, the moving block, a fixing rod, a buffer spring, a pull block, a clamping block, a clamping groove, a mounting block, a fixing shaft, a check block, an adjusting block, a connecting spring, a connecting block, a stabilizing block and a connecting column, the CCD camera body can be conveniently disassembled for maintenance and overhaul, the disassembly and assembly process is simple and convenient, and the practicability is high. The convenience and flexibility during disassembly and assembly are improved, the mirror surface can be conveniently protected when the CCD camera body is not used, and the service life of the CCD camera body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of screen printing machine alignment, in particular to a precise alignment device for a screen printing machine. Background Art

[0002] A screen printer is a type of printing press that uses a screen printing plate to print. Screen printers use an alignment device to ensure the accuracy of the printed product's position. The automatic alignment mechanism uses a dedicated CCD camera to capture images of the product's characteristic locations. An image processor (PC) collects the image data for image processing and performs position calculations to determine the product's actual position. This is then compared with a previously set reference position to calculate the product's actual offset. The product's movement is then controlled to return to the previously set reference position, achieving fast, closed-loop, and high-precision alignment.

[0003] According to application number: CN201910399247.8, a dual-treadmill screen printing visual alignment device and method include a treadmill machine bracket, a high treadmill printing platform, a low treadmill printing platform, and a screen printing visual alignment mechanism. The treadmill machine bracket is provided with a screen printing visual alignment mechanism, a high treadmill printing platform is provided below the screen printing visual alignment mechanism, and a low treadmill printing platform is provided on one side of the high treadmill printing platform.

[0004] In the above case, the alignment device fixes the CCD camera to the frame with multiple bolts, which makes it very troublesome to disassemble the CCD camera for maintenance and repair, affecting the convenience and flexibility of later disassembly and assembly. In addition, the CCD camera lens is always exposed to the outside world when not in use, which increases the probability of damage to the CCD camera mirror and shortens its service life. To this end, we provide a precise alignment device for screen printing machines. Utility Model Content

[0005] The purpose of the present invention is to provide a precise alignment device for a screen printing machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precise positioning device for a screen printing machine, comprising a base plate and a movable horizontal plate arranged on the upper part of the base plate, a movable moving block being provided at the bottom of the horizontal plate, a detachable CCD camera body being provided at the bottom of the moving block, and an adjustable protective shell being provided at the bottom of the CCD camera body.

[0007] Preferably, it also includes a base, which is installed on the top of the CCD camera body, and two slots are opened on the top of the back of the base. An insert block is installed at the bottom of the movable block and at the position corresponding to the slot. The bottom of the insert block passes through the slot and extends to its interior and contacts the inner wall of the slot.

[0008] Preferably, a fixed groove is provided on the left side of the movable block, a movable block is provided inside the fixed groove, two fixed rods are installed on the top of the inner wall of the fixed groove, the bottom ends of the fixed rods pass through the movable block and extend to the outside and are fixedly connected to the bottom of the inner wall of the fixed groove, a buffer spring is sleeved on the surface of the fixed rod, and a pull block is installed on the left side of the movable block through the fixed groove and extends to the outside.

[0009] Preferably, a clamping block is installed at the bottom of the movable block and at a position corresponding to the slot, and a clamping slot is provided at the bottom of the inner wall of the slot and at a position corresponding to the clamping block.

[0010] Preferably, the bottom of the CCD camera body passes through the protective shell and extends into the interior thereof, a mounting block is installed on the left side of the protective shell, a fixed shaft is rotatably connected to the groove on the top of the mounting block through a bearing, and a stop block is installed on the top of the fixed shaft.

[0011] Preferably, the surface of the fixed shaft is slidably connected to an adjusting block, the surface of the fixed shaft is sleeved with a connecting spring, connecting blocks are installed on the left and right sides of the top of the adjusting block, the top of the connecting block passes through the stop block and extends to the outside thereof, the tops of the two connecting blocks are fixedly connected by a stabilizing block, and the top of the stabilizing block is fixedly connected to the bottom of the moving block through a connecting column.

[0012] Preferably, vertical plates are installed on both left and right sides of the top of the bottom plate, two first electric push rods are installed on opposite sides of the two vertical plates, and push blocks are installed on the output ends of the first electric push rods.

[0013] Preferably, a slide groove is provided on the top of the vertical plate, and a slider that slides in contact with the slide groove is installed at the bottom of the horizontal plate and at a position corresponding to the slide groove. A second electric push rod is installed on the front of the vertical plate, and the rear end of the second electric push rod passes through the slide groove and extends into the interior thereof and is fixedly connected to the front of the slider.

[0014] Preferably, a connecting groove is provided at the bottom of the horizontal plate, a servo motor is installed on the left side of the inner wall of the connecting groove, a threaded rod is installed on the right end of the servo motor output shaft, and a threaded block is threadedly connected to the surface of the threaded rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model facilitates the disassembly of the CCD camera body for maintenance and repair through the mutual cooperation of the moving block, protective shell, base, slot, insert block, fixed slot, movable block, fixed rod, buffer spring, pull block, card block, card slot, mounting block, fixed shaft, stop block, adjustment block, connecting spring, connecting block, stabilizing block and connecting column, making the disassembly and assembly process simple and convenient, improving the convenience and flexibility during disassembly and assembly, and conveniently protecting the mirror when the CCD camera body is not in use, thereby increasing the service life of the CCD camera body.

[0017] 2. The utility model realizes a precise alignment device for a screen printing machine through the mutual cooperation of the vertical plate of the CCD camera body, the first electric push rod, the push block, the slide groove, the slider, the second electric push rod, the connecting groove, the servo motor, the threaded rod and the threaded block, and can adjust the position of the CCD camera body during operation as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the protective shell, mounting block, stabilizing block and connecting column of the utility model;

[0020] Figure 3 It is a structural cross-sectional view of the front view of the utility model;

[0021] Figure 4 This is a structural cross-sectional view of the front view of the moving block, CCD camera body, card block and connecting column of the utility model;

[0022] Figure 5 It is a three-dimensional structural diagram of the rear view of the base and slot of the utility model.

[0023] In the figure: 1 bottom plate, 2 horizontal plate, 3 moving block, 4 CCD camera body, 5 protective shell, 6 base, 7 slot, 8 insert block, 9 fixed slot, 10 movable block, 11 fixed rod, 12 buffer spring, 13 pull block, 100 card block, 101 card slot, 14 mounting block, 15 fixed shaft, 16 stop block, 17 adjustment block, 18 connecting spring, 19 connecting block, 20 stable block, 21 connecting column, 22 vertical plate, 23 first electric push rod, 24 push block, 25 slide groove, 26 slider, 27 second electric push rod, 28 connecting slot, 29 servo motor, 210 threaded rod, 211 threaded block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5 A precise alignment device for a screen printing machine includes a base plate 1 and a movable horizontal plate 2 arranged on the upper part of the base plate 1. A movable moving block 3 is arranged at the bottom of the horizontal plate 2. The top of the moving block 3 is in sliding contact with the bottom of the horizontal plate 2. A detachable CCD camera body 4 is arranged at the bottom of the moving block 3. An adjustable protective shell 5 is arranged at the bottom of the CCD camera body 4.

[0026] Furthermore, a conveyor belt body is installed on the top of the base plate 1. The conveyor belt body is long, so that the product can be moved to the inside of the screen printing machine, thereby facilitating screen printing on the product.

[0027] It also includes a base 6, which is mounted on the top of the CCD camera body 4. The top of the base 6 contacts the bottom of the moving block 3. Two slots 7 are provided on the top of the back of the base 6. The bottom of the moving block 3 and the position corresponding to the slot 7 are fixedly connected with an insert block 8. The bottom of the insert block 8 passes through the slot 7 and extends to the inside thereof and contacts the inner wall of the slot 7. A fixed slot 9 is provided on the left side of the moving block 3. A movable block 10 is provided inside the fixed slot 9. The surface of the movable block 10 contacts the inner wall of the fixed slot 9. The top of the inner wall of the fixed slot 9 is fixedly connected with two fixing rods 11. The fixing rods 11 are fixed to the top of the inner wall of the fixed slot 9. The bottom end passes through the movable block 10 and extends to the outside and is fixedly connected to the bottom of the inner wall of the fixed slot 9. The surface of the fixed rod 11 is sleeved with a buffer spring 12. The left side of the movable block 10 passes through the fixed slot 9 and extends to the outside and is fixedly connected to the pull block 13. The bottom of the movable block 10 and the position corresponding to the slot 7 are fixedly connected with a card block 100. The bottom of the inner wall of the slot 7 and the position corresponding to the card block 100 are provided with a card slot 101. The bottom of the card block 100 passes through the fixed slot 9, the insert block 8, the slot 7 and the card slot 101 from top to bottom in sequence and extends to the inside of the card slot 101 and contacts the inner wall of the card slot 101.

[0028] The bottom of the CCD camera body 4 passes through the protective shell 5 and extends into the interior thereof. The left side of the protective shell 5 is fixedly connected to a mounting block 14. A fixed shaft 15 is rotatably connected to the groove at the top of the mounting block 14 through a bearing. The top of the fixed shaft 15 is fixedly connected to a stopper 16. The surface of the fixed shaft 15 is slidably connected to an adjusting block 17. A connecting spring 18 is sleeved on the surface of the fixed shaft 15. The left and right sides of the top of the adjusting block 17 are fixedly connected to connecting blocks 19. The top of the connecting block 19 passes through the stopper 16 and extends to the outside thereof. The tops of the two connecting blocks 19 are fixedly connected by a stabilizing block 20. The bottom of the stabilizing block 20 contacts the top of the stopper 16. The top of the stabilizing block 20 is fixedly connected to the bottom of the moving block 3 through a connecting column 21.

[0029] Specifically, the protective shell 5 is pulled downward, and the protective shell 5 drives the stopper 16 to move downward through the fixed shaft 15, so that the stopper 16 squeezes the connecting spring 18 downward to move, so that the CCD camera body 4 is pulled out of the protective shell 5, and then the protective shell 5 is rotated, and the protective shell 5 drives the mounting block 14 to rotate 180 degrees around the fixed shaft 15, and the CCD camera body 4 can be used.

[0030] Specifically, when the CCD camera body 4 needs to be disassembled, the protective shell 5 does not protect the CCD camera body 4 at this time. The pull block 13 is pulled upward, and the pull block 13 drives the movable block 10 to squeeze the buffer spring 12 upward to move. The movable block 10 drives the card block 100 to move upward, so that the card block 100 and the card slot 101 are separated. Then, the CCD camera body 4 is pulled forward, and the CCD camera body 4 drives the base 6 to move forward. The base 6 drives the slot 7 and the insertion block 8 to separate, and the CCD camera body 4 can be disassembled for maintenance and repair.

[0031] By cooperating with each other, the moving block 3, the protective shell 5, the base 6, the slot 7, the inserting block 8, the fixing slot 9, the movable block 10, the fixing rod 11, the buffer spring 12, the pulling block 13, the card block 100, the card slot 101, the mounting block 14, the fixing shaft 15, the stopper 16, the adjusting block 17, the connecting spring 18, the connecting block 19, the stabilizing block 20 and the connecting column 21, it is convenient to disassemble the CCD camera body 4 for maintenance and overhaul, making the disassembly and assembly process simple and convenient, improving the convenience and flexibility during disassembly and assembly, and conveniently protecting the mirror when the CCD camera body 4 is not in use, thereby improving the service life of the CCD camera body 4.

[0032] The left and right sides of the top of the base plate 1 are fixedly connected to the vertical plates 22, and the opposite sides of the two vertical plates 22 are fixedly connected to two first electric push rods 23, and the output end of the first electric push rod 23 is fixedly connected to a push block 24. The top of the vertical plate 22 is provided with a slide groove 25, and the bottom of the horizontal plate 2 and the position corresponding to the slide groove 25 are fixedly connected with a slider 26 that slides in contact with the slide groove 25. The front of the vertical plate 22 is fixedly connected to the second electric push rod 27, and the rear end of the second electric push rod 27 passes through the slide groove 25 and extends to its interior and is fixedly connected to the front of the slider 26. The bottom of the horizontal plate 2 is provided with a connecting groove 28, and a servo motor 29 is fixedly connected to the left side of the inner wall of the connecting groove 28. The right end of the output shaft of the servo motor 29 is fixedly connected to a threaded rod 210, and the surface of the threaded rod 210 is threadedly connected to a threaded block 211. The surface of the threaded block 211 slides in contact with the inner wall of the connecting groove 28, and the bottom of the threaded block 211 is fixedly connected to the top of the moving block 3.

[0033] Furthermore, a single chip microcomputer and an image processor are respectively installed on the left vertical plate 22, the CCD camera body 4 and the image processor are electrically connected, and the image processor, the first electric push rod 23, the second electric push rod 27 and the servo motor 29 are respectively electrically connected to the single chip microcomputer.

[0034] Furthermore, the second electric push rod 27 is started, and the second electric push rod 27 drives the horizontal plate 2 to move forward and backward through the slider 26, thereby driving the CCD camera body 4 to move forward and backward, and the servo motor 29 is started, and the servo motor 29 drives the threaded rod 210 to rotate, and the threaded rod 210 drives the threaded block 211 to move left and right, thereby driving the CCD camera body 4 to move left and right.

[0035] Through the mutual cooperation of the CCD camera body 4, the vertical plate 22, the first electric push rod 23, the push block 24, the slide groove 25, the slider 26, the second electric push rod 27, the connecting groove 28, the servo motor 29, the threaded rod 210 and the threaded block 211, a precise positioning device for the screen printing machine is realized, and the position of the CCD camera body 4 during operation can be adjusted as needed.

[0036] During use, the product is transported from back to front through the conveyor belt, so that it moves to the bottom of the CCD rubber body 4, and then the characteristic position on the product is photographed and imaged by the CCD camera body 4. The image data is collected by the image processor for image processing, and position calculation is performed to determine the actual position of the product. The actual offset value of the product is calculated by comparing it with the previously set reference position, and then the signal is transmitted to the single-chip microcomputer. The single-chip microcomputer starts the first electric push rod 23, and the first electric push rod 23 moves close to the push block 24 and close to the product, thereby adjusting the position of the product on the conveyor belt. Then, the product moves through the conveyor belt to the inside of the screen printing machine for processing.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precise alignment device for a screen printing machine, characterized by: The invention comprises a bottom plate (1) and a movable horizontal plate (2) arranged on the upper part of the bottom plate (1); a movable moving block (3) is arranged at the bottom of the horizontal plate (2); a detachable CCD camera body (4) is arranged at the bottom of the moving block (3); and an adjustable protective shell (5) is arranged at the bottom of the CCD camera body (4).

2. The precise alignment device for a screen printing machine according to claim 1, characterized in that: The invention also includes a base (6), which is installed on the top of the CCD camera body (4), and two slots (7) are provided on the top of the back of the base (6). An inserting block (8) is installed at the bottom of the moving block (3) and at a position corresponding to the slots (7). The bottom of the inserting block (8) passes through the slot (7) and extends to the inside thereof to contact the inner wall of the slot (7).

3. The precise alignment device for a screen printing machine according to claim 2, characterized in that: A fixed groove (9) is provided on the left side of the movable block (3), a movable block (10) is provided inside the fixed groove (9), two fixed rods (11) are installed on the top of the inner wall of the fixed groove (9), the bottom ends of the fixed rods (11) pass through the movable block (10) and extend to the outside thereof to be fixedly connected to the bottom of the inner wall of the fixed groove (9), a buffer spring (12) is sleeved on the surface of the fixed rod (11), and a pull block (13) is installed on the left side of the movable block (10) passing through the fixed groove (9) and extending to the outside thereof.

4. The precise alignment device for a screen printing machine according to claim 3, characterized in that: A clamping block (100) is installed at the bottom of the movable block (10) and at a position corresponding to the slot (7), and a clamping slot (101) is provided at the bottom of the inner wall of the slot (7) and at a position corresponding to the clamping block (100).

5. The precise alignment device for a screen printing machine according to claim 4, characterized in that: The bottom of the CCD camera body (4) passes through the protective shell (5) and extends into the interior thereof; a mounting block (14) is installed on the left side of the protective shell (5); a fixed shaft (15) is rotatably connected to the groove at the top of the mounting block (14) via a bearing; a stopper (16) is installed at the top of the fixed shaft (15).

6. The precise alignment device for a screen printing machine according to claim 5, characterized in that: The surface of the fixed shaft (15) is slidably connected to an adjusting block (17), the surface of the fixed shaft (15) is sleeved with a connecting spring (18), and connecting blocks (19) are installed on the left and right sides of the top of the adjusting block (17), the top of the connecting block (19) passes through the stop block (16) and extends to the outside thereof, the tops of the two connecting blocks (19) are fixedly connected by a stabilizing block (20), and the top of the stabilizing block (20) is fixedly connected to the bottom of the moving block (3) through a connecting column (21).

7. The precise alignment device for a screen printing machine according to claim 6, characterized in that: Vertical plates (22) are installed on both left and right sides of the top of the base plate (1), and two first electric push rods (23) are installed on opposite sides of the two vertical plates (22), and a push block (24) is installed on the output end of the first electric push rod (23).

8. The precise alignment device for a screen printing machine according to claim 7, characterized in that: A slide groove (25) is provided on the top of the vertical plate (22); a slider (26) is installed at the bottom of the horizontal plate (2) and at a position corresponding to the slide groove (25) so as to be in sliding contact with the slide groove (25); a second electric push rod (27) is installed on the front of the vertical plate (22); a rear end of the second electric push rod (27) passes through the slide groove (25) and extends to the inside thereof and is fixedly connected to the front of the slider (26).

9. The precise alignment device for a screen printing machine according to claim 8, characterized in that: A connecting groove (28) is provided at the bottom of the transverse plate (2), a servo motor (29) is installed on the left side of the inner wall of the connecting groove (28), a threaded rod (210) is installed on the right end of the output shaft of the servo motor (29), and a threaded block (211) is threadedly connected to the surface of the threaded rod (210).

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