Positioning mechanism of screen printing machine

Abstract

The positioning mechanism comprises a base, a groove is formed in the middle of the upper end face of the base, a limiting mechanism is arranged on the inner side of the groove, the limiting mechanism comprises two rotating rods A, and threaded blocks A are arranged on the front portions and the rear portions of the outer surfaces of the rotating rods A in a sleeved mode. The opposite sides of the outer surfaces of every two threaded blocks A are fixedly connected with moving plates, the opposite sides of the outer surfaces of the two moving plates are provided with rotating rods B through strip-shaped grooves B, the two sides of the outer surfaces of the rotating rods B are sleeved with threaded blocks B, and the opposite sides of the outer surfaces of every two threaded blocks B are provided with clamping plates; a vertical plate is installed on the rear end face of the base, a top plate is fixedly installed above the front end face of the vertical plate, and hydraulic rods are installed on the two sides of the upper end face of the top plate. The silk screen limiting device is convenient to operate, a silk screen can be rapidly limited, printing stock can be accurately positioned, and deviation is not prone to occurring in the machining process.

Description

Technical Field

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

[0002] Screen printing refers to using a silk screen as a base and making a screen printing plate with images through a photosensitive platemaking method. Screen printing consists of five major elements: screen printing plate, scraper, ink, printing table and substrate. Printing is based on the basic principle that the mesh holes of the screen printing plate with images can pass through the ink, while the mesh holes of the non-image part cannot pass through the ink. When printing, the staff will place the printing table with the substrate under the screen printing plate, pour ink at one end of the screen printing plate, apply a certain amount of pressure to the ink part on the screen printing plate with the scraper, and move at a constant speed toward the other end of the screen printing plate. During the movement, the ink is squeezed from the mesh holes of the image part to the substrate by the scraper.

[0003] The screen printing machine in the prior art is not provided with a positioning device when in use, and usually uses manual positioning. Manual positioning is slow and easily leads to inaccurate screen printing position, thereby affecting the overall printing effect of the screen printing. Therefore, a positioning mechanism of the screen printing machine is needed.

[0004] Prior art CN220298063U A positioning mechanism of a screen printing machine is provided by setting the first limit block, the second limit block and the clamping block to cooperate with each other. Under the upward action of the hydraulic cylinder, the support plate and the second bearing seat can be driven to move upward, and the second connecting rod can be driven to rotate on the second support block, so that the clamping block is in a state of being tilted and opened with the fixed plate, and the screen is placed above the fixed plate. The two groups of second limit blocks are engaged to perform longitudinal positioning operations on the screen, so as to achieve the neatness of the screen during the printing process, and by setting slots, the height of the clamping block can be adjusted by bolts and three groups of slots to avoid the screen thickness being too thick, so that the screens of different thicknesses can also be pressed and flattened, thereby solving the above technical problems. However, the device is cumbersome to operate, and the screen cannot be limited quickly. Moreover, there is no specific tool for limiting the position of the substrate placed on the bottom plate, and most of them are manually adjusted. The manual adjustment and positioning are inaccurate and prone to deviations; therefore, it does not meet the existing needs. In this regard, we propose a positioning mechanism for a screen printing machine. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning mechanism for a screen printing machine to solve the problems that the device proposed in the above background technology is cumbersome to operate, the screen cannot be quickly limited, and there is no specific tool to limit the position of the substrate placed on the bottom plate. Most of the time, it is manually aligned, and the manual alignment and positioning are inaccurate and prone to deviations.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning mechanism of a screen printing machine, comprising a base, a groove is arranged in the middle of the upper end surface of the base, a limiting mechanism is arranged inside the groove, the limiting mechanism comprises two rotating rods A, the front and rear of the outer surface of the rotating rod A are sleeved with threaded blocks A, a movable plate is fixedly connected to the opposite side of the outer surface of each two threaded blocks A, a rotating rod B is arranged on the opposite side of the outer surface of the two movable plates through a strip groove B, the two sides of the outer surface of the rotating rod B are sleeved with threaded blocks B, a clamping plate is installed on the opposite side of the outer surface of each two threaded blocks B, and a vertical A plate, a top plate is fixedly installed above the front end surface of the vertical plate, hydraulic rods are installed on both sides of the upper end surface of the top plate, a clamping mechanism is movably arranged below the hydraulic rod through a horizontal moving mechanism, the two sides of the outer surfaces of the two horizontal moving mechanisms are connected by a connecting plate, the clamping mechanism includes a strip plate, a slot is arranged in front of the opposite side of the outer surfaces of the two strip plates, a pressure plate is connected to the rear of the slot through a spring, an electrode sheet B is installed in the middle of the rear end surface of the pressure plate, an electrode sheet A is installed in the middle of the front end surface of the slot, electric push rods are installed in front and behind the lower end surface of the strip plate, and the upper end surface of the electric push rod is fixedly connected to a support plate.

[0007] Preferably, the horizontal moving mechanism comprises a screw rod, which is arranged below the horizontal plate through a horizontal groove, and a threaded plate is sleeved on the outer surface of the screw rod, and the threaded plate is fixedly connected to the upper end surface of the strip plate through a vertical plate.

[0008] Preferably, a motor A is installed on one side of the transverse groove through a motor cavity, and a short shaft A is fixedly connected to the output end of the motor A, the other end of the short shaft A is fixedly connected to one end of the screw rod, and the other end of the screw rod is rotatably connected to the inner wall of the transverse groove through a bearing.

[0009] Preferably, the electrode sheet A is electrically connected to the positive pole of the electric push rod, the electrode sheet B is electrically connected to the negative pole of the electric push rod, and the upper end surface of the support plate is fixedly connected to a rubber pad by an adhesive.

[0010] Preferably, the rotating rod A is arranged on both sides of the groove through a strip groove A, and the rotating rod A includes a connecting shaft A, and the front and rear end faces of the connecting shaft A are connected to the threaded rod A, and the threaded rod A is screwed with the threaded block A, and the thread directions of the two threaded rods A are opposite. A motor B is installed in front of the strip groove A through a motor cavity B, and a short shaft B is fixedly connected to the output end of the motor B, and the rear end face of the short shaft B is fixedly connected to the front end of the rotating rod A, and the rear end of the rotating rod A is rotatably connected to the inner wall of the strip groove A through a bearing.

[0011] Preferably, the rotating rod B includes a connecting shaft B, both ends of which are connected to threaded rods B, the threaded rods B are screwed together with the threaded blocks B, the thread directions of the two threaded rods B are opposite, a motor C is installed on one side of the strip groove B through a motor cavity C, a short shaft C is fixedly connected to the output end of the motor C, one end of the short shaft C is fixedly connected to one end of the rotating rod B, and the other end of the rotating rod B is rotatably connected to the inner wall of the strip groove B through a bearing.

[0012] Preferably, one side of the outer surface of each two clamping plates opposite to each other is fixedly connected with an anti-skid pad A through a slot A, and one side of the outer surface of the two movable plates opposite to each other is fixedly connected with an anti-skid pad B through a slot B.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a groove and a limit mechanism, and the substrate is placed inside the groove. By controlling the motor B, the motor B drives the short shaft B to rotate, thereby driving the rotating rod A to rotate, and each two threaded blocks A move in a direction close to each other, driving the two moving plates to move in a direction close to each other, so that the outer surface of the moving plate fits with the front and rear end surfaces of the substrate. Then, by controlling the switch of the motor C, the motor C drives the short shaft C to rotate, thereby driving the rotating rod B to rotate, driving each two threaded blocks B to move in a direction close to each other, thereby driving each two clamping plates to move in a direction close to each other, and the outer surface of the clamping plate fits with the outer surface of the substrate, so that the substrate is stably clamped. The utility model can accurately position the substrate, and it is not easy to have deviation during processing;

[0015] 2. The utility model is provided with a horizontal moving mechanism, and the switch of the control motor A can be used to drive the screw rod to rotate, thereby driving the threaded plate to move on the outer surface of the screw rod, driving the vertical plate to move, and thus driving the two clamping mechanisms to move in the direction of approaching or moving away. By providing the clamping mechanism, the wire mesh is inserted into the inner side of the slot, and after the rear end face of the wire mesh contacts the front end face of the pressure plate, the pressure plate moves backward, the spring is compressed, the electrode sheet A and the electrode sheet B contact, the electric push rod is energized, and the support plate is driven to move upward to fix the wire mesh. The utility model is easy to operate and can quickly limit the wire mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a main cross-sectional view of the utility model as a whole;

[0018] Figure 3 It is a partial structural schematic diagram of the limiting mechanism of the utility model;

[0019] Figure 4 It is a side sectional view of the clamping mechanism of the utility model;

[0020] Figure 5 It is a schematic diagram of the local structure of the pressing plate of the utility model.

[0021] In the figure: 1. base; 2. vertical plate; 3. clamping mechanism; 301. strip plate; 302. support plate; 303. electric push rod; 304. slot; 305. pressure plate; 306. spring; 307. electrode sheet A; 308. electrode sheet B; 4. horizontal moving mechanism; 401. cross plate; 402. screw rod; 403. cross groove; 404. threaded plate; 5. top plate; 6. hydraulic rod; 7. connecting plate; 8. groove; 9. limiting mechanism; 901. threaded block A; 902. strip groove A; 903. rotating rod A; 904. moving plate; 905. strip groove B; 906. rotating rod B; 907. clamping plate; 908. threaded block B. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] The electric push rod 303 (model LBP40), hydraulic rod 6 (model SJYG70-1000), motor A (model YS7134), motor B (model YEJ3-112M-4) and motor C (model 68KTYZ) mentioned in the utility model can all be purchased from the market or obtained by private customization.

[0024] See also Figures 1 to 5The utility model provides an embodiment: a positioning mechanism of a screen printing machine, comprising a base 1, a groove 8 is arranged in the middle of the upper end surface of the base 1, a limiting mechanism 9 is arranged inside the groove 8, the limiting mechanism 9 comprises two rotating rods A903, the front and rear of the outer surface of the rotating rod A903 are sleeved with thread blocks A901, the opposite sides of the outer surfaces of each two thread blocks A901 are fixedly connected with a moving plate 904, the opposite sides of the outer surfaces of the two moving plates 904 are provided with rotating rods B906 through strip grooves B905, the two sides of the outer surface of the rotating rod B906 are sleeved with thread blocks B908, the opposite sides of the outer surfaces of each two thread blocks B908 are installed with a clamping plate 907, the rear end surface of the base 1 is installed with a vertical plate 2, the vertical plate 2 A top plate 5 is fixedly installed above the front end surface, and hydraulic rods 6 are installed on both sides of the upper end surface of the top plate 5. A clamping mechanism 3 is movably arranged below the hydraulic rod 6 through a horizontal moving mechanism 4. The opposite sides of the outer surfaces of the two horizontal moving mechanisms 4 are connected by a connecting plate 7. The clamping mechanism 3 includes a strip plate 301. A slot 304 is arranged in front of the opposite side of the outer surfaces of the two strip plates 301. A pressure plate 305 is connected to the rear of the slot 304 through a spring 306. An electrode sheet B308 is installed in the middle of the rear end surface of the pressure plate 305, and an electrode sheet A307 is installed in the middle of the front end surface of the slot 304. Electric push rods 303 are installed in front and behind the lower end surface of the strip plate 301, and the upper end surface of the electric push rod 303 is fixedly connected to a support plate 302.

[0025] Furthermore, the horizontal moving mechanism 4 includes a screw rod 402, which is arranged below the horizontal plate 401 through a horizontal groove 403. A threaded plate 404 is sleeved on the outer surface of the screw rod 402, and the threaded plate 404 is fixedly connected to the upper end surface of the strip plate 301 through a vertical plate.

[0026] By adopting the above technical solution, when the screw rod 402 rotates, the threaded plate 404 moves on the outer surface of the screw rod 402, which can drive the vertical plate to move, thereby driving the strip plate 301 to move.

[0027] Furthermore, a motor A is installed on one side of the transverse groove 403 through the motor cavity, and a short shaft A is fixedly connected to the output end of the motor A. The other end of the short shaft A is fixedly connected to one end of the screw rod 402, and the other end of the screw rod 402 is rotatably connected to the inner wall of the transverse groove 403 through a bearing.

[0028] By adopting the above technical solution, the motor A can drive the short shaft A to rotate, thereby driving the screw rod 402 to rotate, thereby improving the stability of the rotation of the screw rod 402.

[0029] Furthermore, the electrode sheet A307 is electrically connected to the positive pole of the electric push rod 303, the electrode sheet B308 is electrically connected to the negative pole of the electric push rod 303, and the upper end surface of the support plate 302 is fixedly connected to a rubber pad by an adhesive.

[0030] By adopting the above technical solution, when the electrode sheet A307 contacts the electrode sheet B308, the electric push rod 303 is energized.

[0031] Furthermore, the rotating rod A903 is arranged on both sides of the groove 8 through the strip groove A902, and the rotating rod A903 includes a connecting shaft A, and the front and rear end faces of the connecting shaft A are connected to the threaded rod A, and the threaded rod A is screwed with the threaded block A901, and the thread directions of the two threaded rods A are opposite. A motor B is installed in front of the strip groove A902 through the motor cavity B, and the output end of the motor B is fixedly connected to a short shaft B, and the rear end face of the short shaft B is fixedly connected to the front end of the rotating rod A903, and the rear end of the rotating rod A903 is rotatably connected to the inner wall of the strip groove A902 through a bearing.

[0032] By adopting the above technical solution, the motor B can drive the short shaft B to rotate, thereby driving the rotating rod A903 to rotate, improving the rotation stability of the rotating rod A903, and the two threaded blocks A901 can move away or closer at the same time.

[0033] Furthermore, the rotating rod B906 includes a connecting shaft B, both ends of which are connected to threaded rods B, which are screwed together with the threaded block B908, and the thread directions of the two threaded rods B are opposite. A motor C is installed on one side of the strip groove B905 through the motor cavity C, and a short shaft C is fixedly connected to the output end of the motor C. One end of the short shaft C is fixedly connected to one end of the rotating rod B906, and the other end of the rotating rod B906 is rotatably connected to the inner wall of the strip groove B905 through a bearing.

[0034] By adopting the above technical solution, the motor C can drive the short shaft C to rotate, thereby driving the rotating rod B906 to rotate, improving the rotation stability of the rotating rod B906, and the two threaded blocks B908 can move in the direction of moving away or approaching at the same time.

[0035] Furthermore, one side of the outer surface of each two clamping plates 907 that is opposite to each other is fixedly connected to an anti-skid pad A through a card slot A, and one side of the outer surface of the two movable plates 904 that is opposite to each other is fixedly connected to an anti-skid pad B through a card slot B.

[0036] By adopting the above technical solution, the stability of the clamping plate 907 and the movable plate 904 in clamping the load is improved.

[0037] When the positioning mechanism of the screen printing machine is in use, the power is turned on, and the printing material is placed on the inner side of the groove 8 by setting the groove 8 and the limit mechanism 9. By controlling the motor B, the motor B drives the short shaft B to rotate, thereby driving the rotating rod A903 to rotate, and every two threaded blocks A901 move in the direction of approaching each other, driving the two moving plates 904 to move in the direction of approaching each other, so that the outer surface of the moving plate 904 fits with the front and rear end surfaces of the printing material. Then, by controlling the switch of the motor C, the motor C drives the short shaft C to rotate, thereby driving the rotating rod B906 to rotate, driving every two threaded blocks B908 to move in the direction of approaching each other, thereby driving every two clamping plates 907 to move in the direction of approaching each other, and the outer surface of the clamping plate 907 fits with the outer surface of the printing material. , the substrate is clamped stably, and the horizontal moving mechanism 4 is provided, and the switch of the motor A can be controlled to drive the screw rod 402 to rotate, thereby driving the threaded plate 404 to move on the outer surface of the screw rod 402, driving the vertical plate to move, thereby driving the two clamping mechanisms 3 to move in the direction of approaching or moving away, and the clamping mechanism 3 is provided, the screen is inserted into the inner side of the slot 304, and after the rear end face of the screen contacts the front end face of the pressing plate 305, the pressing plate 305 moves backward, the spring 306 is compressed, the electrode sheet A307 and the electrode sheet B308 contact, and the electric push rod 303 is energized to drive the support plate 302 to move upward to fix the screen. The utility model is easy to operate, can quickly limit the screen, and can accurately position the substrate, and is not prone to deviation during processing.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A positioning mechanism for a screen printing machine, comprising a base (1), characterized in that: A groove (8) is provided in the middle of the upper end surface of the base (1), and a limiting mechanism (9) is provided inside the groove (8). The limiting mechanism (9) comprises two rotating rods A (903), and thread blocks A (901) are sleeved on the front and rear of the outer surface of the rotating rods A (903). A movable plate (904) is fixedly connected to the opposite side of the outer surface of each two thread blocks A (901). A rotating rod B (906) is provided on the opposite side of the outer surface of the two movable plates (904) through a strip groove B (905). Thread blocks B (908) are sleeved on both sides of the outer surface of the rotating rods B (906). A clamping plate (907) is installed on the opposite side of the outer surface of each two thread blocks B (908). A vertical plate (2) is installed on the rear end surface of the base (1), and a top plate (5) is fixedly installed above the front end surface of the vertical plate (2). Hydraulic rods (6) are installed on both sides of the upper end surface of the plate (5); a clamping mechanism (3) is movably arranged below the hydraulic rod (6) through a horizontal moving mechanism (4); the two sides of the outer surfaces of the two horizontal moving mechanisms (4) are connected by a connecting plate (7); the clamping mechanism (3) comprises a strip plate (301); a slot (304) is arranged in front of the opposite side of the outer surfaces of the two strip plates (301); a pressure plate (305) is connected to the rear of the slot (304) through a spring (306); an electrode sheet B (308) is installed in the middle of the rear end surface of the pressure plate (305); an electrode sheet A (307) is installed in the middle of the front end surface of the slot (304); electric push rods (303) are installed in front and behind the lower end surface of the strip plate (301); and the upper end surface of the electric push rod (303) is fixedly connected to a support plate (302).

2. A positioning mechanism for a screen printing machine according to claim 1, characterized in that: The horizontal moving mechanism (4) comprises a screw rod (402), the screw rod (402) being arranged below the horizontal plate (401) through a horizontal groove (403), a threaded plate (404) being sleeved on the outer surface of the screw rod (402), and the threaded plate (404) being fixedly connected to the upper end surface of the strip plate (301) through a vertical plate.

3. A positioning mechanism for a screen printing machine according to claim 2, characterized in that: A motor A is installed on one side of the transverse groove (403) through a motor cavity, and a short shaft A is fixedly connected to the output end of the motor A. The other end of the short shaft A is fixedly connected to one end of the screw rod (402), and the other end of the screw rod (402) is rotatably connected to the inner wall of the transverse groove (403) through a bearing.

4. The positioning mechanism of a screen printing machine according to claim 1, characterized in that: The electrode sheet A (307) is electrically connected to the positive pole of the electric push rod (303), the electrode sheet B (308) is electrically connected to the negative pole of the electric push rod (303), and the upper end surface of the support plate (302) is fixedly connected to a rubber pad by an adhesive.

5. The positioning mechanism of a screen printing machine according to claim 1, characterized in that: The rotating rod A (903) is arranged on both sides of the groove (8) through the strip groove A (902), and the rotating rod A (903) includes a connecting shaft A. The front and rear end surfaces of the connecting shaft A are both connected to the threaded rod A. The threaded rod A is screwed with the threaded block A (901), and the thread directions of the two threaded rods A are opposite. A motor B is installed in front of the strip groove A (902) through the motor cavity B. The output end of the motor B is fixedly connected to a short shaft B. The rear end surface of the short shaft B is fixedly connected to the front end of the rotating rod A (903), and the rear end of the rotating rod A (903) is rotatably connected to the inner wall of the strip groove A (902) through a bearing.

6. The positioning mechanism of a screen printing machine according to claim 1, characterized in that: The rotating rod B (906) includes a connecting shaft B, both ends of which are connected to threaded rods B, the threaded rods B are screwed together with the threaded block B (908), and the thread directions of the two threaded rods B are opposite. A motor C is installed on one side of the strip groove B (905) through a motor cavity C, and a short shaft C is fixedly connected to the output end of the motor C. One end of the short shaft C is fixedly connected to one end of the rotating rod B (906), and the other end of the rotating rod B (906) is rotatably connected to the inner wall of the strip groove B (905) through a bearing.

7. The positioning mechanism of a screen printing machine according to claim 1, characterized in that: An anti-skid pad A is fixedly connected to one side of the outer surface of each of the two clamping plates (907) via a card slot A, and an anti-skid pad B is fixedly connected to one side of the outer surface of the two movable plates (904) via a card slot B.

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