A scraping mechanism for screen printing machine

Abstract

The utility model relates to the technical field of scraper printing mechanisms, in particular to a scraper printing mechanism of a screen printing machine, which improves the cleaning effect of the scraper and improves the printing quality of the mechanism for patterns; it includes a first support block and an ink return knife, and the ink return knife is installed at the bottom end of the first support block; it also includes a support device, a moving device, a second support block, a scraper and a shovel plate, the bottom end of the second support block is connected to the top end of the scraper, and the first support block and the second support block are both installed on the support device, the support device is used to drive the first support block and the second support block to move alternately up and down, and the support device is used to drive the first support block and the second support block to move horizontally, and a moving device is arranged on the second support block, and the moving device is used to drive the shovel plate to move and adjust, and the lower part of the shovel plate contacts the outer side wall of the scraper.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper printing mechanisms, in particular to a scraper printing mechanism of a screen printer. Background Art

[0002] The basic principle of screen printing is to use the characteristics of the screen printing plate that the mesh holes of the image part are permeable to ink, while the mesh holes of the non-image part are not permeable to ink. In the printing process, the scraper mechanism, as one of the key components, determines the printing quality and efficiency.

[0003] At present, in the existing scraping and printing mechanisms, such as the patent with authorization announcement number CN208789222U, the utility model discloses a screen printing machine, which includes a base, a workbench, a screen printing plate, a screen printing scraper assembly and a horizontal screw. The workbench is arranged on the base, and adjustment seats are arranged at both ends of one side of the base. A horizontal screw is installed on each adjustment seat, and the other end of the horizontal screw is connected to the fence. A screen printing plate is arranged on the workbench, and a fence is formed around the screen printing plate. A screen printing scraper assembly is arranged at one end of the screen printing plate near the adjustment seat side, and the screen printing scraper assembly includes a screen printing scraper beam and a screen printing scraper installed under the screen printing scraper beam.

[0004] However, during the use of the equipment, it was found that after the scraper of the equipment was used to scrape ink, the ink easily adhered to the surface of the scraper. When the scraper was used again to scrape ink, the residual ink from the last time easily affected the use, thereby reducing the quality of screen printing. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a scraping mechanism of a screen printing machine which improves the cleaning effect of a scraper and improves the pattern printing quality of the mechanism.

[0006] The utility model discloses a scraping mechanism of a screen printing machine, comprising a first support block and an ink return knife, wherein the ink return knife is mounted at the bottom end of the first support block; further comprising a support device, a moving device, a second support block, a scraper and a shovel plate, wherein the bottom end of the second support block is connected to the top end of the scraper, and the first support block and the second support block are both mounted on the support device, the support device is used to drive the first support block and the second support block to move alternately up and down, and the support device is used to drive the first support block and the second support block to move horizontally, a moving device is arranged on the second support block, and the moving device is used to drive the shovel plate to move and adjust, and the lower part of the shovel plate contacts the outer side wall of the scraper; the first support block and the second support block are driven by the support device to move horizontally The support device moves horizontally to the right, and the first support block drives the ink return knife to move downward, so that the ink return knife applies ink on the screen printing plate. Then the support device drives the first support block and the second support block to move horizontally to the left, and at the same time, the second support block drives the scraper to move downward and contact with the screen printing plate, so that the scraper squeezes the pattern onto the substrate. When the scraper is used, the moving device drives the shovel plate to move downward, so that the shovel plate scrapes and cleans the ink attached to the scraper surface. When the shovel plate moves upward and resets, the shovel plate and the scraper are separated to prevent the ink attached to the bottom of the shovel plate from sticking to the scraper surface again, thereby improving the cleaning effect of the scraper and improving the printing quality of the scraper on the pattern.

[0007] Preferably, the moving device includes a driving device, a chassis, an electric cylinder, a limit ring, a spring, a limit plate and multiple groups of guide columns, a guide groove is provided on the second support block, the chassis is slidably mounted on the guide groove up and down, the electric cylinder is mounted on the inner wall of the chassis, the limit ring is mounted on the outer wall of the moving end of the electric cylinder, the shovel plate is slidably sleeved on the moving end of the electric cylinder, the limit plate is mounted on the front end of the moving end of the electric cylinder, the spring is cooperatively sleeved on the outer wall of the moving end of the electric cylinder, multiple groups of guide columns are all mounted on the outer wall of the chassis, the shovel plate is slidably mounted on the multiple groups of guide columns, and the driving device is mounted on the second support block, and the driving device is used to drive the chassis to move up and down; when the driving device drives the chassis to move downward, the chassis drives the shovel plate to move downward through the electric cylinder. At this time, the moving end of the electric cylinder contracts, so that the electric cylinder pushes the shovel plate to be close to the outer wall of the scraper through the spring, so that the shovel plate scrapes off the ink on the scraper surface after moving downward, and when the shovel plate moves upward, the moving end of the electric cylinder extends, so that the shovel plate is separated from the scraper by the push of the limit ring, thereby improving the convenience of use of the mechanism.

[0008] Preferably, the supporting device includes a traveling device, a power device, two groups of fixing parts, two groups of first racks and a first gear, the two groups of fixing parts are respectively mounted on the top of the first supporting block and the second supporting block, the two groups of first racks are respectively mounted on the outer side walls of the two groups of fixing parts, the first gear is rotatably mounted on the traveling device by the power device, the traveling device is used to drive the first supporting block and the second supporting block to move horizontally, and the first gear is meshed with the two groups of first racks; the first gear is driven to rotate by the power device, so that the first gear drives the two groups of fixing parts to move in opposite directions through the meshing with the two groups of first racks, so that the two groups of fixing parts respectively drive the first supporting block and the second supporting block to rise and fall alternately, thereby improving the convenience of the mechanism for ink smearing and scraping.

[0009] Preferably, the driving device includes a screw and a first motor, the screw is rotatably mounted on the outer wall of the second support block, the chassis is screwed on the screw, the first motor is mounted on the outer wall of the second support block, and the output end of the first motor is connected to the screw; the screw is driven to rotate by the first motor, so that the screw drives the chassis to move up and down, thereby improving the convenience of moving the shovel up and down.

[0010] Preferably, the walking device includes a guide rail and a base, the guide rail is installed on the printing machine body, the base is installed on the guide rail for sliding left and right, and the first support block and the second support block are both installed on the base for sliding up and down; by moving the base left and right, the base drives the ink return knife and the scraper to move horizontally, and the first support block and the second support block slide on the base, thereby improving the movement stability of the first support block and the second support block.

[0011] Preferably, the power device includes a second motor and a rotating shaft, the second motor is installed on the outer side wall of the base, the rotating shaft is rotatably installed on the outer side wall of the base, the output end of the second motor is connected to the rotating shaft, and the first gear is installed at the end of the rotating shaft; the rotating shaft is driven to rotate by the second motor, so that the rotating shaft drives the first gear to rotate.

[0012] Preferably, it also includes a third motor, a second gear and a second rack, the third motor is mounted on the inner wall of the base, the second gear is mounted on the output end of the third motor, the second rack is mounted on the outer wall of the guide rail, and the second rack is meshed with the second gear; the second gear is driven to rotate by the third motor, so that the second gear drives the base to move horizontally through the engagement with the second rack, thereby improving the convenience of horizontal movement of the first support block and the second support block.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the first support block and the second support block are driven to move horizontally to the right by the support device, and the first support block drives the ink return knife to move downward, so that the ink return knife applies ink to the screen printing plate; then the support device drives the first support block and the second support block to move horizontally to the left, and at the same time the second support block drives the scraper to move downward and contact the screen printing plate, so that the scraper squeezes the pattern onto the substrate; when the scraper is used, the moving device drives the shovel plate to move downward, so that the shovel plate scrapes and cleans the ink attached to the scraper surface; when the shovel plate moves upward and resets, the shovel plate and the scraper are separated, so as to prevent the ink attached to the bottom of the shovel plate from sticking to the scraper surface again, thereby improving the cleaning effect of the scraper and improving the printing quality of the scraper on the pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 2 is a schematic diagram of the isometric partial structure of the connection between the second support block and the scraper, etc.;

[0016] Figure 3 It is a schematic diagram of the partial axonometric structure of the connection between the electric cylinder and the limit ring;

[0017] Figure 4 It is a schematic diagram of the axonometric structure of the connection between the guide rail and the second rack etc.;

[0018] Figure 5 It is a schematic diagram of the axonometric structure of the connection between the first support block and the ink return knife, etc.

[0019] Markings in the attached drawings: 1. first support block; 2. ink return knife; 3. second support block; 4. scraper; 5. shovel plate; 6. chassis; 7. electric cylinder; 8. limit ring; 9. spring; 10. limit plate; 11. guide column; 12. fixing piece; 13. first rack; 14. first gear; 15. lead screw; 16. first motor; 17. guide rail; 18. base; 19. second motor; 20. rotating shaft; 21. third motor; 22. second gear; 23. second rack. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Example 1

[0022] like Figures 1 to 5As shown, a scraping mechanism of a screen printing machine of the utility model comprises a first support block 1 and an ink return knife 2, wherein the ink return knife 2 is mounted at the bottom end of the first support block 1; further comprising a support device, a moving device, a second support block 3, a scraper 4 and a shovel plate 5, wherein the bottom end of the second support block 3 is connected to the top end of the scraper 4, and the first support block 1 and the second support block 3 are both mounted on the support device, the support device is used to drive the first support block 1 and the second support block 3 to move alternately up and down, and the support device is used to drive the first support block 1 and the second support block 3 to move horizontally, a moving device is arranged on the second support block 3, and the moving device is used to drive the shovel plate 5 to move and adjust, and the lower part of the shovel plate 5 contacts the outer side wall of the scraper 4;

[0023] like Figure 3 As shown, the moving device includes a driving device, a chassis 6, an electric cylinder 7, a limit ring 8, a spring 9, a limit plate 10 and a plurality of guide columns 11. A guide groove is provided on the second support block 3. The chassis 6 is slidably mounted on the guide groove up and down. The electric cylinder 7 is mounted on the inner wall of the chassis 6. The limit ring 8 is mounted on the outer wall of the moving end of the electric cylinder 7. The shovel plate 5 is slidably mounted on the moving end of the electric cylinder 7. The limit plate 10 is mounted on the front end of the moving end of the electric cylinder 7. The spring 9 is matched and mounted on the outer wall of the moving end of the electric cylinder 7. The plurality of guide columns 11 are all mounted on the outer wall of the chassis 6. The shovel plate 5 is slidably mounted on the plurality of guide columns 11. The driving device is mounted on the second support block 3. The driving device is used to drive the chassis 6 to move up and down.

[0024] In this embodiment, the first support block 1 and the second support block 3 are driven by the supporting device to move horizontally to the right, and the first support block 1 drives the ink return knife 2 to move downward, so that the ink return knife 2 applies ink on the screen printing plate, and then the supporting device drives the first support block 1 and the second support block 3 to move horizontally to the left, and at the same time, the second support block 3 drives the scraper 4 to move downward and contact the screen printing plate, so that the scraper 4 squeezes the pattern onto the substrate. When the scraper 4 is used, the shovel plate 5 is driven downward by the moving device, so that the shovel plate 5 scrapes and cleans the ink attached to the surface of the scraper 4 downward. When the shovel plate 5 moves upward and resets, the shovel plate 5 is separated from the scraper 4 to prevent the ink attached to the bottom of the shovel plate 5 from sticking to the surface of the scraper 4 again, thereby improving the cleaning effect of the scraper 4 and improving the printing quality of the scraper 4 on the pattern.

[0025] Example 2

[0026] On the basis of Example 1, Figure 2As shown, a scraping mechanism of a screen printing machine of the utility model, the supporting device includes a walking device, a power device, two sets of fixing members 12, two sets of first racks 13 and a first gear 14, the two sets of fixing members 12 are respectively mounted on the top of the first supporting block 1 and the second supporting block 3, the two sets of first racks 13 are respectively mounted on the outer side walls of the two sets of fixing members 12, the first gear 14 is rotatably mounted on the walking device through the power device, the walking device is used to drive the first supporting block 1 and the second supporting block 3 to move horizontally, and the first gear 14 is meshed with the two sets of first racks 13;

[0027] like Figure 3 As shown, the driving device includes a lead screw 15 and a first motor 16, the lead screw 15 is rotatably mounted on the outer wall of the second support block 3, the chassis 6 is screwed on the lead screw 15, the first motor 16 is mounted on the outer wall of the second support block 3, and the output end of the first motor 16 is connected to the lead screw 15;

[0028] like Figure 4 As shown, the walking device includes a guide rail 17 and a base 18, the guide rail 17 is installed on the printing machine body, the base 18 is slidably installed on the guide rail 17, and the first support block 1 and the second support block 3 are both slidably installed on the base 18 up and down;

[0029] like Figure 2 As shown, the power device includes a second motor 19 and a rotating shaft 20, the second motor 19 is mounted on the outer wall of the base 18, the rotating shaft 20 is rotatably mounted on the outer wall of the base 18, the output end of the second motor 19 is connected to the rotating shaft 20, and the first gear 14 is mounted on the end of the rotating shaft 20;

[0030] like Figure 4 As shown, it also includes a third motor 21, a second gear 22 and a second rack 23, the third motor 21 is mounted on the inner wall of the base 18, the second gear 22 is mounted on the output end of the third motor 21, and the second rack 23 is mounted on the outer wall of the guide rail 17, and the second rack 23 is meshed with the second gear 22;

[0031] In this embodiment, after the driving device drives the chassis 6 to move downward, the chassis 6 drives the scraper plate 5 to move downward through the electric cylinder 7. At this time, the moving end of the electric cylinder 7 contracts, so that the electric cylinder 7 pushes the scraper plate 5 to be close to the outer wall of the scraper 4 through the spring 9, so that the scraper plate 5 moves downward to scrape off the ink on the surface of the scraper 4. When the scraper plate 5 moves upward, the moving end of the electric cylinder 7 is extended, so that the scraper plate 5 is separated from the scraper 4 by the push of the limit ring 8, thereby improving the convenience of use of the mechanism, and driving the first gear 14 to rotate through the power device, so that the first gear 14 drives the two groups of fixing parts 12 to move in opposite directions through the engagement with the two groups of first racks 13, so that the two groups of fixing parts 12 respectively drive the first support block 1 and the second support block 3 to rise and fall alternately, thereby improving the convenience of the mechanism for ink smearing and scraping.

[0032] The utility model discloses a scraping mechanism of a screen printing machine, which, when working, drives the first support block 1 and the second support block 3 to move horizontally to the right through a support device, and makes the first support block 1 drive the ink return knife 2 to move downward, so that the ink return knife 2 applies ink on the screen printing plate, and then the support device drives the first support block 1 and the second support block 3 to move horizontally to the left, and at the same time makes the second support block 3 drive the scraper 4 to move downward and contact the screen printing plate, so that the scraper 4 squeezes the pattern onto the substrate, and when the scraper 4 is used, the moving device drives the scraper plate 5 to move downward, so that the scraper plate 5 scrapes and cleans the ink attached to the surface of the scraper 4 downward.

[0033] The electric cylinder 7, the first motor 16, the second motor 19 and the third motor 21 of the scraping mechanism of the screen printing machine of the utility model are purchased on the market, and the technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative labor.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A scraping mechanism for a screen printing machine, comprising a first support block (1) and an ink return knife (2), wherein the ink return knife (2) is mounted at the bottom end of the first support block (1); characterized in that: The invention also comprises a supporting device, a moving device, a second supporting block (3), a scraper (4) and a shovel plate (5), wherein the bottom end of the second supporting block (3) is connected to the top end of the scraper (4), and the first supporting block (1) and the second supporting block (3) are both mounted on the supporting device, the supporting device is used to drive the first supporting block (1) and the second supporting block (3) to move up and down alternately, and the supporting device is used to drive the first supporting block (1) and the second supporting block (3) to move horizontally, the second supporting block (3) is provided with a moving device, the moving device is used to drive the shovel plate (5) to move and adjust, and the lower part of the shovel plate (5) contacts the outer side wall of the scraper (4).

2. A scraper printing mechanism for a screen printing machine as claimed in claim 1, characterized in that: The moving device comprises a driving device, a chassis (6), an electric cylinder (7), a limiting ring (8), a spring (9), a limiting plate (10) and a plurality of guide columns (11). The second support block (3) is provided with a guide groove, the chassis (6) is slidably mounted on the guide groove, the electric cylinder (7) is mounted on the inner wall of the chassis (6), the limiting ring (8) is mounted on the outer wall of the moving end of the electric cylinder (7), the shovel plate (5) is slidably mounted on the moving end of the electric cylinder (7), the limiting plate (10) is mounted at the front end of the moving end of the electric cylinder (7), the spring (9) is cooperatively mounted on the outer wall of the moving end of the electric cylinder (7), the plurality of guide columns (11) are all mounted on the outer wall of the chassis (6), the shovel plate (5) is slidably mounted on the plurality of guide columns (11), and the driving device is mounted on the second support block (3). The driving device is used to drive the chassis (6) to move up and down.

3. A scraper printing mechanism for a screen printing machine as claimed in claim 1, characterized in that: The supporting device comprises a walking device, a power device, two groups of fixing members (12), two groups of first racks (13) and a first gear (14); the two groups of fixing members (12) are respectively mounted on the top of the first supporting block (1) and the second supporting block (3); the two groups of first racks (13) are respectively mounted on the outer side walls of the two groups of fixing members (12); the first gear (14) is rotatably mounted on the walking device through the power device; the walking device is used to drive the first supporting block (1) and the second supporting block (3) to move horizontally; and the first gear (14) is meshed with the two groups of first racks (13).

4. A scraper printing mechanism for a screen printing machine as claimed in claim 2, characterized in that: The driving device comprises a lead screw (15) and a first motor (16); the lead screw (15) is rotatably mounted on the outer wall of the second support block (3); the chassis (6) is screwed onto the lead screw (15); the first motor (16) is mounted on the outer wall of the second support block (3); and the output end of the first motor (16) is connected to the lead screw (15).

5. The scraper printing mechanism of a screen printing machine as claimed in claim 3, characterized in that: The walking device comprises a guide rail (17) and a base (18), wherein the guide rail (17) is mounted on the printing machine body, the base (18) is mounted on the guide rail (17) so as to slide left and right, and the first support block (1) and the second support block (3) are mounted on the base (18) so as to slide up and down.

6. The scraper printing mechanism of a screen printing machine as claimed in claim 3, characterized in that: The power device comprises a second motor (19) and a rotating shaft (20), wherein the second motor (19) is mounted on the outer wall of the base (18), the rotating shaft (20) is rotatably mounted on the outer wall of the base (18), the output end of the second motor (19) is connected to the rotating shaft (20), and the first gear (14) is mounted on the end of the rotating shaft (20).

7. The scraper printing mechanism of a screen printing machine as claimed in claim 5, characterized in that: The invention also comprises a third motor (21), a second gear (22) and a second rack (23), wherein the third motor (21) is mounted on the inner wall of the base (18), the second gear (22) is mounted on the output end of the third motor (21), the second rack (23) is mounted on the outer wall of the guide rail (17), and the second rack (23) is meshed with the second gear (22).

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