Screen printing device

Abstract

The utility model discloses a screen printing device which is provided with frame edges located on the two sides of a printing area in the length direction. An inclined surface facing the printing area is formed on the frame edge; guide grooves are formed in two ends of the frame edge on the screen frame; the guide groove comprises a horizontal extension section and an inclined extension section which extends from one end of the horizontal extension section in the inclined direction parallel to the inclined plane; scraping plates are arranged on the front surface and the back surface of the scraper; a guide piece corresponding to the guide groove is arranged on the scraper; the scraper has a matching state in which the guide piece is inserted into the guide groove and guide matching is formed; in the matching state, when the guiding piece is located on the oblique extending section, the scraping plate facing the oblique face is matched with the oblique face in a contact mode, and when the guiding piece is located on the horizontal extending section, the scraping plate facing the oblique face is matched with the printing area in a contact mode. Ink close to the frame edge can be scraped and collected in a centralized mode through the scraper, continuous utilization of the ink is facilitated, the ink is convenient to clean, time and labor are saved, and the requirement for screen printing operation is effectively met.

Description

Technical Field

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

[0002] In screen printing, a screen frame and a scraper are used. The ink for printing is placed in the screen frame, and the scraper is used to apply pressure and scrape the screen frame so that the ink can pass through the mesh holes in the specific pattern area and transfer the ink to the printed object.

[0003] like Figure 1 As shown, a conventional screen frame 1 is formed of a rectangular frame structure with four frame edges 12. During the printing process, the viscous ink moves and disperses on the screen under the scraping of the scraper. When the ink is driven to the edge position close to the front and rear frame edges 12, it is blocked by the frame edges 12. A certain amount of ink near the frame edges 12 is difficult to be scraped and collected by the scraper. This certain amount of ink is difficult to continue to use, resulting in a waste of ink, which is not conducive to the cleaning of the ink and is difficult to effectively meet the needs of screen printing operations. Utility Model Content

[0004] In view of the above-mentioned technical problems, the purpose of the utility model is to propose a screen printing device, which can scrape the ink near the edge of the frame through a scraper and collect it in a centralized manner to facilitate the continued use of the ink. The ink is easy to clean, saving time and effort, and effectively meeting the needs of screen printing operations.

[0005] The technical solution of the utility model is achieved as follows: a screen printing device comprises a screen frame and a scraper;

[0006] The screen frame has a printing area and frame edges located on both sides of the printing area in the length direction; the frame edge is formed with an inclined surface facing the printing area; the inclined surface has an inclined lower end close to the printing area and an inclined upper end away from the printing area;

[0007] The screen frame is provided with guide grooves at both ends of each frame edge; the guide grooves include a horizontal extension section extending along the length direction of the printing area, and an oblique extension section extending from one end of the horizontal extension section along an oblique direction parallel to the inclined surface;

[0008] The scraper has a first scraping end that cooperates with the printing area; a scraper is provided on the front and back of the scraper; and the scraper has a second scraping end that is away from the scraper;

[0009] A guide piece is provided on the scraper corresponding to the guide groove; the scraper has a fitting state in which the guide piece is inserted into the guide groove to form a guide fit; in the fitting state, the scraper is away from the inclined surface and the printing area, and when the guide piece is located in the oblique extension section, the second scraper end of the scraper facing the inclined surface is in contact with the inclined surface, and when the guide piece is located in the horizontal extension section, the second scraper end of the scraper facing the inclined surface is in contact with the printing area.

[0010] Furthermore, the inclined lower end of the slope forms a boundary of the printing area.

[0011] Furthermore, the second scraping end of the scraper is wrapped with a rubber layer.

[0012] Furthermore, in the mating state, the scraper and the inclined surface are arranged parallel to each other, and the first scraping end of the scraper faces the printing area.

[0013] Furthermore, the guide grooves are provided with at least two groups spaced apart from each other in the upper and lower parts; the guide member is a cylindrical structure; and in the mating state, the guide member is slidably mated with the guide grooves.

[0014] Furthermore, both ends of the guide groove are open; a slot is provided on the mesh frame at the upper end of the guide groove; the upper end of each guide groove is connected to the slot; the top of the slot is open and the bottom is closed; the guide piece has an inserted state of being inserted into the slot; in the inserted state, the guide piece at the bottom abuts against the bottom of the slot and corresponds to the upper end of the lowermost guide groove.

[0015] Furthermore, the scraper includes a fixed plate and a knife plate arranged on the fixed plate; a hand-holding position is provided on the fixed plate.

[0016] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0017] The utility model is provided with an inclined surface facing the printing area on the frame edge, so as to expand the operating space near the frame edge position and reduce the obstruction of the frame edge to the scraper when cleaning the ink near the frame edge position. Through the coordinated use of the scraper and the guide groove, in the coordinated state, the scraper can move along the oblique extension section and the horizontal extension section of the guide groove. During the movement of the scraper, the scraper on the scraper contacts the inclined surface, so as to be able to scrape the ink on the inclined surface along the inclined direction of the inclined surface and collect it into the printing area, and to be able to push the ink near the inclined surface position in the printing area away from the inclined surface. Through the combination of the above methods, the ink near the frame edge position can be scraped by the scraper and collected in the printing area, so as to facilitate the continued use of the ink, and the ink cleaning is convenient, saving time and effort, and effectively meeting the needs of screen printing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a screen frame in the background art;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the overall structure of the utility model;

[0021] Figure 3 for Figure 2 A schematic diagram of a top view structure;

[0022] Figure 4 for Figure 3 Sectional view at AA in the figure;

[0023] Figure 5 for Figure 3 The cross-sectional view at BB in FIG.

[0024] Figure 6 This is a schematic diagram of the scraper of the utility model during screen printing;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the scraper of the utility model;

[0026] Figure 8 for Figure 7 A side view structural schematic diagram of

[0027] Among them: 1. screen frame; 11. printing area; 12. frame edge; 13. inclined surface; 2. scraper; 21. fixing plate; 211. hand-holding position; 22. knife plate; 3. scraper; 31. rubber layer; 4. guide; 5. side plate; 6. guide groove; 61. oblique extension section; 62. horizontal extension section; 7. slot. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0029] like Figure 2-8The screen printing device described in this embodiment is shown, which is suitable for printing a workpiece by manual operation and is adapted to the printing operation requirements of ink with a certain viscosity. The screen printing device includes a screen frame 1 and a scraper 2. The screen frame 1 is a rectangular frame structure, which can be a wooden frame or a metal frame. A printing area 11 is formed in the screen frame 1, and the scraper 2 scrapes the ink back and forth along the length direction of the screen frame 1 in the printing area 11 to achieve the printing operation. The screen frame 1 has frame edges 12 on both sides of the length direction of the printing area 11. An inclined surface 13 facing the printing area 11 is formed on the frame edge 12. The inclined surface 13 has an inclined lower end close to the printing area 11 and an inclined upper end away from the printing area 11. An intersection line is formed between the inclined lower side of the inclined surface 13 and the bottom surface of the frame edge 12. The intersection line is the boundary of the aforementioned printing area 11. When the scraper 2 scrapes the ink in the printing area 11, part of the ink will move to the inclined surface 13.

[0030] Side plates 5 are installed at both ends of each frame edge 12 on the aforementioned screen frame 1. Guide grooves 6 are formed on the opposite surfaces of the side plates 5 on both sides. In this embodiment, the two ends of the guide groove 6 in the length direction are open, and the side of the guide groove 6 facing the other side is also open. In the specific design, the guide groove 6 includes a horizontal extension section 62 extending along the length direction of the printing area 11, and an oblique extension section 61 extending from one end of the horizontal extension section 62 along the oblique direction parallel to the inclined surface 13. The horizontal extension section 62 is arranged corresponding to the printing area 11, and the oblique extension section 61 is arranged corresponding to the inclined surface 13. The aforementioned scraper 2 has a first scraper end that matches the printing area 11. By contacting the first scraper end with the printing area 11, the ink in the printing area 11 can be scraped. The scraper 3 is installed on the front and back of the aforementioned scraper 2. In this embodiment, the front and back of the scraper 2 are defined as the two side surfaces in the thickness direction of the scraper 2. The scraper plate 3 extends along a preset direction to have a second scraping end away from the scraper blade 2 .

[0031] Wherein, guide members 4 are installed at both ends of the scraper 2 in the length direction corresponding to each guide groove 6. The guide member 4 can be inserted into the guide groove 6 from one end of the guide groove 6, and slides with the guide groove 6, so that the scraper 2 has a matching state in which the guide member 4 is inserted into the guide groove 6 and forms a guide match. In this matching state, the guide member 4 can move along the length extension direction of the guide groove 6. By reasonably designing the position of the guide groove 6, in the matching state, the scraper 2 is away from the inclined surface 13 and the printing area 11, so that the movement of the scraper 2 is not blocked by the screen frame 1. In addition, in this matching state, the first scraping end of the scraper 2 faces the printing area 11, so that the ink dripping from the scraper 2 can be received by the printing area 11, avoiding the ink from being stained on the frame edge 12 of the screen frame 1 or the outside of the screen frame 1. In this matching state, when the guide member 4 is located in the oblique extension section 61, the second scraper end of the scraper 3 facing the inclined surface 13 contacts and matches the inclined surface 13, and drives the scraper 3 to move toward the inclined lower end of the inclined surface 13, so as to scrape the ink on the inclined surface 13 to the printing area 11. And when the guide member 4 is located in the horizontal extension section 62, the second scraper end of the scraper 3 facing the inclined surface 13 contacts and matches the printing area 11, and drives the scraper 3 to move in a direction away from the inclined surface 13, so as to scrape the ink close to the inclined surface 13 or the frame edge 12 in the printing area 11 to a position away from the frame edge 12.

[0032] In this embodiment, the guide grooves 6 are arranged in two groups at intervals in the upper and lower parts. The guide member 4 is a cylindrical structure. In the aforementioned matching state, each guide member 4 is slidably matched with the guide groove 6 at the corresponding position. Through the above structural design, the guide member 4 can move stably in the guide groove 6, so that the ink scraping process is smooth and stable. In addition, by reasonably designing the relative positions of the two guide members 4, in this matching state, the scraper 2 and the inclined surface 13 are arranged parallel to each other, so that the scraper 2 is away from the inclined surface 13 and the printing area 11.

[0033] In this embodiment, the two scrapers 3 are arranged corresponding to one frame edge 12 respectively, and by switching the tilting direction of the scraper 2 , the two scrapers 3 switch positions to face the inclined surfaces 13 of the corresponding frame edges 12 .

[0034] A rubber layer 31 is wrapped on the second scraping end of the scraper 3. The rubber layer 31 has a designed elastic force. When scraping ink, the rubber layer 31 is in close contact with the inclined surface 13 and the mesh surface of the printing area 11 to improve the ink scraping ability.

[0035] The scraper 2 includes a fixed plate 21 and a blade 22 fixed on the fixed plate 21. The blade 22 is made of rubber material. The first scraper end is formed on the blade 22. The two scrapers 3 are fixedly mounted on the fixed plate 21. A hand-holding position 211 is arranged on the fixed plate 21. The hand-holding position 211 on the fixed plate 21 is processed with an anti-slip protrusion. The hand-holding position 211 is pinched with both hands to pick up the scraper 2 for printing.

[0036] In this embodiment, a slot 7 is processed on the upper end of the guide groove 6 on the screen frame 1, and the upper end of each guide groove 6 is connected to the slot 7. The top of the slot 7 is open and the bottom is closed. The width of the slot 7 is adapted to the outer diameter of the guide member 4. Through the slot 7, the aforementioned guide member 4 can be inserted into the slot 7. The aforementioned guide member 4 has an inserted state of being inserted into the slot 7. In this inserted state, the guide member 4 located at the bottom abuts against the bottom of the slot 7 and corresponds to the upper end of the guide groove 6 at the bottom. Through the above-mentioned structural design, when all the guide members 4 are inserted into the slot 7, the guide member 4 at the bottom can accurately correspond to the end of the guide groove 6 at the corresponding position, thereby making each guide member 4 correspond to the end of the guide groove 6 at each corresponding position, so that the guide member 4 can smoothly enter the guide groove 6.

[0037] When used specifically, the scraper 2 is used to scrape the ink in the printing area 11 to perform printing operations. When it is necessary to clean the ink near the frame edge 12 or on the inclined surface 13, the guide members 4 at both ends of the scraper 2 are inserted into the slots 7 at the corresponding positions, and then the scraper 2 is pushed so that the guide members 4 enter the guide groove 6. The scraper 2 is pushed to move in the oblique extension section 61 and the horizontal extension section 62 of the guide groove 6. When the scraper 2 moves in the oblique extension section 61, the scraper plate 3 on the scraper 2 contacts the inclined surface 13 to scrape the ink on the inclined surface 13 along the inclined direction of the inclined surface 13 and collect it in the printing area 11. When the scraper 2 moves in the horizontal extension section 62, the scraper plate 3 contacts the mesh surface of the printing area 11 to push the ink near the inclined surface 13 in the printing area 11 from the inclined lower end of the inclined surface 13 to a position away from the inclined surface 13. In the above manner, the inclined surface 13 facing the printing area 11 is arranged on the frame edge 12, so as to expand the operating space near the frame edge 12 and reduce the obstruction of the frame edge 12 to the scraper 2 when cleaning the ink near the frame edge 12. The scraper 2 scrapes the ink near the frame edge 12 and collects it in the printing area 11, so as to facilitate the continued use of the ink, and the ink cleaning is convenient, time-saving and labor-saving, and effectively meets the needs of screen printing operations.

[0038] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A screen printing device, comprising a screen frame and a scraper; characterized in that: The screen frame has a printing area and frame edges located on both sides of the printing area in the length direction; the frame edge is formed with an inclined surface facing the printing area; the inclined surface has an inclined lower end close to the printing area and an inclined upper end away from the printing area; The screen frame is provided with guide grooves at both ends of each frame edge; the guide grooves include a horizontal extension section extending along the length direction of the printing area, and an oblique extension section extending from one end of the horizontal extension section along an oblique direction parallel to the inclined surface; The scraper has a first scraping end that cooperates with the printing area; a scraper is provided on the front and back of the scraper; and the scraper has a second scraping end that is away from the scraper; A guide piece is provided on the scraper corresponding to the guide groove; the scraper has a fitting state in which the guide piece is inserted into the guide groove to form a guide fit; in the fitting state, the scraper is away from the inclined surface and the printing area, and when the guide piece is located in the oblique extension section, the second scraper end of the scraper facing the inclined surface is in contact with the inclined surface, and when the guide piece is located in the horizontal extension section, the second scraper end of the scraper facing the inclined surface is in contact with the printing area.

2. A screen printing device according to claim 1, characterized in that: The inclined lower end of the slope forms a boundary of the printing area.

3. A screen printing device according to claim 1, characterized in that: The second scraping end of the scraper is wrapped with a rubber layer.

4. A screen printing device according to claim 1, characterized in that: In the mating state, the scraper and the inclined surface are arranged parallel to each other, and the first scraping end of the scraper faces the printing area.

5. A screen printing device according to claim 1, characterized in that: The guide grooves are provided with at least two groups spaced apart from each other in the upper and lower parts; the guide member is a cylindrical structure; in the matching state, the guide member is slidably matched with the guide grooves.

6. A screen printing device according to claim 1, characterized in that: The two ends of the guide groove are open; a slot is provided on the mesh frame at the upper end of the guide groove; the upper end of each guide groove is connected to the slot; the top of the slot is open and the bottom is closed; the guide piece has an inserted state of being inserted into the slot; in the inserted state, the guide piece at the bottom is in contact with the bottom of the slot and corresponds to the upper end of the lowermost guide groove.

7. A screen printing device according to claim 1, characterized in that: The scraper comprises a fixed plate and a knife plate arranged on the fixed plate; a hand holding position is arranged on the fixed plate.

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