Printing plate positioning device of printing machine

Abstract

The utility model relates to the field of printing machines, and discloses a printing machine printing plate positioning device which comprises a fixing plate, L-shaped frames are arranged at the two ends of the front face of the fixing plate correspondingly, concave frames are arranged at the two ends of the top faces of the two L-shaped frames correspondingly, and the two concave frames are distributed in a bilateral symmetry mode; according to the printing device, the rotating button rotates to drive the first threaded rod and the pressing plate to vertically move downwards, the downward movement of the pressing plate and the concave frame can play a role in fixing the two ends of the screen plate, it is ensured that the screen plate cannot move in the printing process, and the stability and accuracy of the screen plate in the printing process are ensured; the printing quality is improved, screen plates with different contents can be conveniently replaced, a third threaded rod is driven to rotate through the output end of a first motor, the third threaded rod rotates to drive a fixing plate and the screen plate to move downwards in the vertical direction of a sliding rod, and screen printing can be conducted on materials with different heights through downward movement of the screen plate; therefore, different printing requirements can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of printing machines, in particular to a printing machine printing plate positioning device. BACKGROUND

[0002] In the printing industry, accurate positioning of the printing plate is one of the key factors to ensure the quality of printing. The printing plate positioning device in traditional printing machines often has problems such as inaccurate positioning and complex adjustment, which leads to misalignment and ghosting in the printing process, seriously affecting the quality of printed products and production efficiency. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problem that the printing plate positioning device in traditional printing machines often has problems such as inaccurate positioning and complex adjustment, which leads to misalignment and ghosting in the printing process, seriously affecting the quality of printed products and production efficiency, the present application provides a printing machine printing plate positioning device.

[0004] The printing machine printing plate positioning device provided by the present application adopts the following technical scheme:

[0005] A printing machine printing plate positioning device, comprising a fixed plate, the front surface of the fixed plate is provided with an L-shaped frame at both ends, the top surface of the two L-shaped frames is provided with a concave frame at both ends, the two concave frames are symmetrically distributed left and right, and a screen plate is arranged between the two concave frames, a first threaded rod is arranged through the top surface of the concave frame, the first threaded rod is provided with a plurality of horizontal equidistant distribution, and a knob and a pressing plate are arranged on the top surface and the bottom surface of the first threaded rod respectively.

[0006] Preferably, a second threaded rod is arranged in the interior of the fixed plate, a sliding block is sleeved on the outer wall of the second threaded rod, the free end of the sliding block penetrates through a sliding port and is connected with a support plate which extends outward, the support plate is connected with a fixed block, and one end of the second threaded rod penetrates through the fixed plate and is connected with the output end of a second motor which extends outward.

[0007] Preferably, two hydraulic cylinders are arranged on the top surface of the fixed block, the output ends of the two hydraulic cylinders penetrate through the fixed block and are connected with a support which extends downward, and a scraper is arranged in the interior of the support.

[0008] Preferably, a third threaded rod is arranged through the back surface of the fixed plate, connecting plates are arranged on the top surface and the bottom surface of the third threaded rod, two sliding rods are arranged between the two connecting plates, and the back surface of the fixed plate is slidingly connected with the two sliding rods at both ends respectively.

[0009] Preferably, the top surface of the third threaded rod penetrates through the upper connecting plate and is connected with the output end of a first motor which extends upward.

[0010] In summary, the present application has the following beneficial technical effects:

[0011] 1. By rotating the knob, the rotation of the knob drives the first threaded rod and the pressing plate to move vertically downward, the downward movement of the pressing plate can fix the two ends of the screen plate between the concave frame, ensuring that the screen plate does not move during printing, ensuring the stability and accuracy of the screen plate during printing, improving the printing quality, and also facilitating the replacement of screen plates with different contents;

[0012] 2. The output end of the first motor drives the third threaded rod to rotate, and the rotation of the third threaded rod drives the fixed plate and the screen plate to move downward along the vertical direction of the sliding rod, and the downward movement of the screen plate can perform screen printing on materials of different heights, thereby meeting different printing needs. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the structure front view of the application embodiment;

[0014] Figure 2 is the structure rear view of the application embodiment;

[0015] Figure 3 is the structure schematic view of the concave frame of the application embodiment.

[0016] Mark explanation: 1, fixed plate; 2, L-shaped frame; 3, concave frame; 4, knob; 5, pressing plate; 6, first threaded rod; 7, second threaded rod; 8, sliding port; 9, sliding block; 10, scraper; 11, support; 12, fixed block; 13, support plate; 14, connecting plate; 16, first motor; 17, third threaded rod; 18, sliding rod; 19, screen plate; 20, hydraulic cylinder. DETAILED DESCRIPTION

[0017] The following will be combined with the Figures 1-3 The application is further described in detail.

[0018] The application embodiment discloses a printing machine printing plate positioning device, referring to Figure 1 and Figure 3The utility model provides a silk screen printing device, including fixed plate 1, both ends of the front of fixed plate 1 are fixedly provided with L-shaped frame 2, both ends of the top of two L-shaped frames 2 are fixedly provided with concave frame 3, two concave frames 3 are symmetrically distributed, and the net board 19 is arranged between the two concave frames 3, the top of the concave frame 3 is threadedly provided with the first threaded rod 6, the first threaded rod 6 is provided with a plurality of, and is horizontally equidistantly distributed, the top and bottom of the first threaded rod 6 are respectively provided with the knob 4 and the pressing plate 5, the pressing plate 5 is connected with the first threaded rod 6 through the bearing, the knob 4 is driven to move vertically downwards along with the first threaded rod 6 and the pressing plate 5 by the rotation of the knob 4, the downward movement of the pressing plate 5 can fix the both ends of the net board 19 between the concave frame 3, ensure that the net board 19 does not move in the printing process, ensure the stability and accuracy of the net board 19 in the printing process, improve the printing quality, and also facilitate the replacement of the net board 19 with different contents.

[0019] Refer to Figures 1-2 The inside of fixed plate 1 is rotationally provided with the second threaded rod 7, the outer wall of the second threaded rod 7 is threadedly sleeved with the sliding block 9, the free end of the sliding block 9 penetrates the sliding port 8 and is fixedly connected with the branch plate 13 extending outward, the branch plate 13 is fixedly connected with the fixed block 12, one end of the second threaded rod 7 penetrates the fixed plate 1 and is connected with the output end of the second motor extending outward, the top of the fixed block 12 is provided with two hydraulic cylinders 20, the output ends of the two hydraulic cylinders 20 penetrate the fixed block 12 and are connected with the support 11 extending downward, the inside of the support 11 is fixedly provided with the scraper 10, the second threaded rod 7 is driven to rotate by the output end of the second motor, the second threaded rod 7 is driven to move along the horizontal direction of the sliding port 8 by the rotation, the sliding block 9 is driven to move by the movement, and the fixed block 12 is driven to move by the two hydraulic cylinders 20 to drive the two scrapers 10 to slide left and right, so that the material is subjected to silk screen printing operation.

[0020] Refer to Figure 2 The back of the fixed plate 1 is threadedly provided with the third threaded rod 17, the top and bottom of the third threaded rod 17 are rotationally provided with the connecting plate 14, two sliding rods 18 are fixedly arranged between the two connecting plates 14, the back of the fixed plate 1 is slidingly connected with the two sliding rods 18 at both ends, the top of the third threaded rod 17 penetrates the connecting plate 14 on the top and is connected with the output end of the first motor 16 extending upward, the third threaded rod 17 is driven to rotate by the output end of the first motor 16, the fixed plate 1 and the net board 19 are driven to move downward along the vertical direction of the sliding rod 18 by the rotation of the third threaded rod 17, the downward movement of the net board 19 can be subjected to silk screen printing on the material of different heights, so that different printing requirements can be met.

[0021] The implementation principle of the printing plate positioning device of the printing machine is as follows: in use, first, the rotating knob 4 is rotated, the rotating knob 4 drives the first threaded rod 6 and the pressing plate 5 to move vertically downwards, the downward movement of the pressing plate 5 can fix the two ends of the screen plate 19 relative to the concave frame 3, then the output end of the first motor 16 drives the third threaded rod 17 to rotate, the rotation of the third threaded rod 17 drives the fixed plate 1 and the screen plate 19 to move vertically downwards along the slide rod 18 until the screen plate 19 is in contact with the material, finally, the output end of the second motor drives the second threaded rod 7 to rotate, the rotation of the second threaded rod 7 drives the sliding block 9 to move horizontally along the sliding slot 8, the movement of the sliding block 9 drives the supporting plate 13 and the fixed block 12 to move, and the fixed block 12 moves while driving the two scrapers 10 to slide left and right through the two hydraulic cylinders 20, so that the screen printing operation of the material is realized.

[0022] Finally, it should be pointed out that: first, in the description of the application, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0023] Secondly: the utility model discloses the embodiment of the drawings only relates to the structure involved in the embodiment of the disclosure, and other structures can refer to the usual design, and under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0024] Finally: the above only for the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0025] The above are the preferred embodiments of the application, and are not used to limit the protection scope of the application, so: any equivalent change made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A printing plate positioning device for a printing press comprising a fixed plate (1), characterised in that: The front end of the fixed plate (1) is equipped with an L-shaped frame (2), the top of the two L-shaped frames (2) is equipped with a concave frame (3), the two concave frames (3) are symmetrically distributed, and the net plate (19) is arranged between the two concave frames (3), the top of the concave frame (3) is equipped with a first threaded rod (6), the first threaded rod (6) is equipped with a plurality of horizontal equidistant distribution, the top and bottom of the first threaded rod (6) are equipped with a knob (4) and a pressing plate (5) respectively.

2. A printing plate positioning device according to claim 1, characterised in that: The inside of the fixed plate (1) is equipped with a second threaded rod (7), the outer wall of the second threaded rod (7) is equipped with a sliding block (9), the free end of the sliding block (9) penetrates through the sliding port (8) and is connected with the support plate (13) which extends outward, the support plate (13) is connected with the fixed block (12), one end of the second threaded rod (7) penetrates through the fixed plate (1) and is connected with the output end of the second motor which extends outward.

3. A printing plate positioning device according to claim 2, wherein: The top of the fixed block (12) is equipped with two hydraulic cylinders (20), the output end of the two hydraulic cylinders (20) penetrates through the fixed block (12) and is connected with the support (11) which extends downward, the inside of the support (11) is equipped with a scraper (10).

4. A printing plate positioning device according to claim 1, wherein: The back of the fixed plate (1) is equipped with a third threaded rod (17), the top and bottom of the third threaded rod (17) are equipped with a connecting plate (14), two sliding rods (18) are arranged between the two connecting plates (14), and the back of the fixed plate (1) is connected with the two sliding rods (18) respectively.

5. A printing plate positioning device according to claim 4, characterised in that: The top of the third threaded rod (17) penetrates through the upper connecting plate (14) and is connected with the output end of the first motor (16) which extends upward.

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