Unreeling mechanism of photogravure press

Abstract

The utility model provides an unwinding mechanism of a photogravure press, which belongs to the technical field of photogravure presses and comprises a bottom plate, a fixed seat is fixedly connected to the surface of the bottom plate, a movable seat is arranged on one side, far away from the fixed seat, of the bottom plate, a mounting plate is fixedly connected to one side of the fixed seat, and a first motor is mounted on the surface of the mounting plate. The first motor penetrates through the fixing base and is fixedly connected with a rotating shaft, through cooperative use of the moving base and the moving mechanism, a user can conveniently change the position of the moving base so as to replace the roller, and the problem that the burden of workers is increased due to the fact that the operation difficulty is large when an unwinding structure is replaced in a current scheme is solved; according to the unwinding mechanism of the gravure printing machine, the convenience of the unwinding mechanism of the gravure printing machine is improved, the device can stably unwind a printing film along with the change of the size of the film through the arrangement of the pressing mechanism, subsequent printing is avoided, and therefore the efficiency of the unwinding mechanism of the gravure printing machine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gravure printing machines, and in particular relates to an unwinding mechanism of a gravure printing machine. Background Art

[0002] A gravure printing press is a machine that uses a gravure plate for printing. The image and text part of the printing plate is concave, while the blank part is on the same plane as the outer circle of the plate cylinder. When printing, the gravure printing press adopts round-to-round direct printing. The printing plate is directly made on the plate cylinder, and the ink is supplied by ink immersion or inkjet. There is no ink uniforming mechanism. The entire surface of the plate cylinder is inked, and the ink on the blank part of the plate is scraped off with a scraper, leaving the ink on the image and text part, and then passing through the film. The impression cylinder is pressed on the back of the film so that the ink in the concave part is directly transferred to the film, and finally the printed matter is stacked or rewound after winding. The inking device includes direct inking by immersing part of the plate cylinder in the ink tank and indirect inking by the ink outlet roller immersed in the ink tank to transfer the ink to the plate cylinder. Some high-speed machines also use inkjet.

[0003] The utility model with the authorization announcement number CN212768764U disclosed the unwinding mechanism of the gravure printing machine in the field of gravure printing machine, including a base, a fixed seat is fixedly connected to the bottom of the inner cavity of the base, a connecting rod is rotatably connected to one side of the fixed seat through a rotating shaft, a first spring is welded to one side of the connecting rod, and a buffer frame is fixedly connected to the bottom of the inner cavity of the base and one side of the fixed seat; in the utility model, the unwinding work is carried out by the coordinated use of the motor and the unwinding roller, and vibration is generated when the work is carried out. By setting the coordinated use of the support plate, the trapezoidal block and the base, when vibration is generated, the trapezoidal block is pushed by the first pulley, and then the amplitude generated during the vibration is alleviated by the coordinated use of the connecting plate, the buffer frame and the second spring, thereby solving the problem that when the existing gravure printing machine unwinds the material, due to the lack of a shock absorbing device, the shock absorbing effect is poor when the material is unwinding, which is easy to cause damage to the product and reduces the printing progress.

[0004] The above technical solution is structurally arranged by using a support plate, a trapezoidal block and a base in coordination. When vibration occurs, the trapezoidal block is pushed by setting a first pulley, and the connecting plate, a buffer frame and a second spring are used in coordination to effectively reduce the amplitude of the vibration. This solves the problem that when the existing gravure printing machine unwinds the material, the shock absorbing effect is poor due to the lack of a shock absorbing device, which easily causes damage to the product and reduces the printing progress. However, the above technical solution is inconvenient to use because the unwinding structure needs to be replaced after the paper roll is unwound. The replacement operation is difficult, which increases the burden on the staff. In addition, the above technical solution cannot ensure smooth unwinding of the unwinding mechanism for smaller printed paper, which may affect subsequent printing. Utility Model Content

[0005] The utility model aims to provide an unwinding mechanism for a gravure printing machine, aiming to solve the problem in the prior art that the unwinding structure needs to be replaced after the paper roll is unwound, the operation is difficult during replacement, thereby increasing the burden on the staff, and the current technical solution cannot ensure smooth unwinding of smaller printing paper by the unwinding mechanism, which may affect subsequent printing.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The unwinding mechanism of a gravure printing machine belongs to the technical field of gravure printing machines and comprises: a bottom plate, a fixed seat is fixedly connected to the surface of the bottom plate, a movable seat is arranged on the side of the bottom plate away from the fixed seat, a mounting plate is fixedly connected to one side of the fixed seat, a first motor is mounted on the surface of the mounting plate, the first motor passes through the fixed seat and is fixedly connected to a rotating shaft, the other end of the rotating shaft is rotatably connected to a bearing, the bearing is fixedly connected to the movable seat, a roller is arranged on the surface of the rotating shaft, a slider is fixedly connected to the bottom of the movable seat, a second slide groove is provided on the surface of the bottom plate, the second slide groove is movably connected to the slider, a limited slide groove is provided on the surface of the second slide groove, a moving mechanism is installed inside the bottom plate, the moving mechanism passes through the limited slide groove and is fixedly connected to the slider, a first slide groove is provided on the surface of the bottom plate, a second motor is mounted on one end of the first slide groove, a bidirectional threaded rod is fixedly connected to the output end of the second motor, and a clamping mechanism is movably connected to the surface of the bidirectional threaded rod.

[0008] As a preferred solution of the utility model, the clamping mechanism includes a moving block, an electric telescopic rod, a connecting plate, a fixed rod and an arc plate, the moving block is movably connected to the surface of the bidirectional threaded rod, the electric telescopic rod is installed on the top of the moving block, the connecting plate is fixedly connected to the top of the electric telescopic rod, the fixed rod is fixedly connected to the surface of the connecting plate, and the arc plate is fixedly connected to one side of the fixed rod.

[0009] As a preferred solution of the utility model, two moving blocks are provided, and the interiors of the two moving blocks are respectively provided with internal threads used in conjunction with the bidirectional threaded rod.

[0010] As a preferred solution of the utility model, the moving mechanism includes a third motor, a threaded rotating rod, a moving sleeve rod and a connecting bracket. The third motor is installed inside the base plate, the threaded rotating rod is fixedly connected to the output end of the third motor, the moving sleeve rod is movably connected to the outer surface of the threaded rotating rod, and the connecting bracket is fixedly connected to the top of the moving sleeve rod.

[0011] As a preferred solution of the utility model, two second sliding grooves are provided, and the size of the limiting sliding groove is larger than the size of the connecting bracket.

[0012] As a preferred solution of the present invention, the first slide groove is arranged in parallel with the roller, and the width of the sliding block is the same as that of the second slide groove.

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

[0014] This solution uses a movable seat and a movable mechanism in coordination, so that the user can easily change the position of the movable seat and thus replace the roller, thereby avoiding the problem of increased burden on staff due to the difficulty of replacing the unwinding structure in the current solution, thereby improving the convenience of the unwinding mechanism of the gravure printing machine. Through the setting of the clamping mechanism, the device can smoothly unwind the printed paper as the size of the paper changes, avoiding the creation of subsequent printing, thereby improving the efficiency of the unwinding mechanism of the gravure printing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 It is a first stereoscopic schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a second stereoscopic schematic diagram of the overall structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the clamping mechanism in the structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the moving mechanism in the structure of the utility model.

[0021] In the figure: 1, bottom plate; 2, fixed seat; 3, mounting plate; 4, first motor; 5, rotating shaft; 6, moving seat; 7, bearing; 8, roller; 9, first slide groove; 10, second motor; 11, bidirectional threaded rod; 12, clamping mechanism; 1201, moving block; 1202, electric telescopic rod; 1203, connecting plate; 1204, fixed rod; 1205, arc plate; 13, second slide groove; 14, limit slide groove; 15, moving mechanism; 1501, third motor; 1502, threaded rotating rod; 1503, moving sleeve rod; 1504, connecting bracket; 16, slider. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] See also Figure 1-4 , the technical solution provided by this embodiment is as follows:

[0025] The unwinding mechanism of a gravure printing machine is intended to solve the problem in the prior art that the unwinding structure needs to be replaced after the paper roll is unwound, the replacement operation is difficult, and the burden on the staff is increased. In addition, the current technical solution cannot ensure smooth unwinding of smaller printing paper, which may affect subsequent printing.

[0026] The unwinding mechanism of the gravure printing machine includes: a bottom plate 1, a fixed seat 2 is fixedly connected to the surface of the bottom plate 1, a movable seat 6 is arranged on the side of the bottom plate 1 away from the fixed seat 2, a mounting plate 3 is fixedly connected to one side of the fixed seat 2, a first motor 4 is installed on the surface of the mounting plate 3, the first motor 4 passes through the fixed seat 2 and is fixedly connected to a rotating shaft 5, the other end of the rotating shaft 5 is rotatably connected to a bearing 7, the bearing 7 is fixedly connected to the movable seat 6, a roller 8 is arranged on the surface of the rotating shaft 5, a slider 16 is fixedly connected to the bottom of the movable seat 6, a second slide groove 13 is provided on the surface of the bottom plate 1, the second slide groove 13 is movably connected to the slider 16, a limited slide groove 14 is provided on the surface of the second slide groove 13, a moving mechanism 15 is installed inside the bottom plate 1, the moving mechanism 15 passes through the limited slide groove 14 and is fixedly connected to the slider 16, a first slide groove 9 is provided on the surface of the bottom plate 1, a second motor 10 is installed at one end of the first slide groove 9, a bidirectional threaded rod 11 is fixedly connected to the output end of the second motor 10, and a clamping mechanism 12 is movably connected to the surface of the bidirectional threaded rod 11.

[0027] In a specific embodiment of the utility model, by using the movable seat 6 and the movable mechanism 15 in coordination, the user can conveniently change the position of the movable seat 6 and thus replace the roller 8, thereby avoiding the problem that the current solution is difficult to operate when replacing the unwinding structure, which increases the burden on the staff, thereby improving the convenience of the unwinding mechanism of the gravure printing machine. By setting the clamping mechanism 12, the device can smoothly unwind the printed paper following the change in paper size, avoiding the creation of subsequent printing, thereby improving the efficiency of the unwinding mechanism of the gravure printing machine.

[0028] Specifically, the clamping mechanism 12 includes a moving block 1201, an electric telescopic rod 1202, a connecting plate 1203, a fixed rod 1204 and an arc plate 1205. The moving block 1201 is movably connected to the surface of the bidirectional threaded rod 11, the electric telescopic rod 1202 is installed on the top of the moving block 1201, the connecting plate 1203 is fixedly connected to the top of the electric telescopic rod 1202, the fixed rod 1204 is fixedly connected to the surface of the connecting plate 1203, and the arc plate 1205 is fixedly connected to one side of the fixed rod 1204.

[0029] In a specific embodiment of the present utility model, the user can adjust the height of the arc plate 1205 as needed by setting the electric telescopic rod 1202, thereby improving the flexibility of the unwinding mechanism of the gravure printing machine.

[0030] Specifically, two moving blocks 1201 are provided, and the interiors of the two moving blocks 1201 are respectively provided with internal threads for use with the bidirectional threaded rod 11 .

[0031] In a specific embodiment of the utility model, the setting of the internal threads of the bidirectional threaded rod 11 and the moving block 1201 enables the distance between the moving blocks 1201 to be adjusted when the second motor 10 drives the bidirectional threaded rod 11 to rotate forward or reverse to adapt to the size of the paper, thereby improving the practicality of the unwinding mechanism of the gravure printing machine.

[0032] Specifically, the moving mechanism 15 includes a third motor 1501, a threaded rotating rod 1502, a moving sleeve rod 1503 and a connecting bracket 1504. The third motor 1501 is installed inside the base plate 1, the threaded rotating rod 1502 is fixedly connected to the output end of the third motor 1501, the moving sleeve rod 1503 is movably connected to the outer surface of the threaded rotating rod 1502, and the connecting bracket 1504 is fixedly connected to the top of the moving sleeve rod 1503.

[0033] In a specific embodiment of the utility model, the cooperation between the threaded rotating rod 1502 and the movable sleeve rod 1503 is practical so that after the third motor 1501 is started, it will drive the threaded rotating rod 1502 to rotate and thereby adjust the length between it and the movable sleeve rod 1503, thereby adjusting the distance between the fixed seat 2 and the movable seat 6 by moving the slider 16 through the connecting bracket 1504, making it easy to replace the roller 8, thereby improving the convenience of the unwinding mechanism of the gravure printing machine.

[0034] Specifically, two second sliding grooves 13 are provided, and the size of the limiting sliding groove 14 is larger than the size of the connecting bracket 1504 .

[0035] In a specific embodiment of the present invention, the second slide groove 13 and the limiting slide groove 14 are matched to enable the moving mechanism 15 to be connected to the slider 16 through the limiting slide groove 14, thereby achieving distance adjustment, thereby improving the adjustability of the unwinding mechanism of the gravure printing machine.

[0036] Specifically, the first chute 9 is arranged in parallel with the roller 8 , and the sliding block 16 has the same width as the second chute 13 .

[0037] In a specific embodiment of the present invention, the matching arrangement of the slider 16 and the second slide groove 13 facilitates the slider 16 to slide inside the second slide groove 13, thereby improving the smoothness of the unwinding mechanism of the gravure printing press.

[0038] Working principle: When in use, start the first motor 4 so that the first motor 4 drives the rotating shaft 5 and then drives the roller 8 to rotate and unwind, and print the paper. The arc plate 1205 can press the paper to avoid wrinkles during paper transmission. When the size of the paper changes, the second motor 10 can be turned on. When the second motor 10 drives the bidirectional threaded rod 11 to rotate forward or reverse, the distance between the moving blocks 1201 can be adjusted to adapt to the size of the paper to avoid the subsequent printing affected by the inappropriate size. When the roller 8 needs to be replaced, the user can turn on the third motor 1501. After the third motor 1501 is started, it will drive the threaded rotating rod 1502 to rotate and then adjust the length between it and the moving sleeve rod 1503, so as to adjust the distance between the fixed seat 2 and the moving seat 6 by moving the slider 16 through the connecting bracket 1504, so as to facilitate the user to replace the roller 8 and increase the convenience of the equipment.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. The unwinding mechanism of the gravure printing machine is characterized by: include: A bottom plate (1), a fixed seat (2) is fixedly connected to the surface of the bottom plate (1), a movable seat (6) is arranged on the side of the bottom plate (1) away from the fixed seat (2), a mounting plate (3) is fixedly connected to one side of the fixed seat (2), a first motor (4) is mounted on the surface of the mounting plate (3), the first motor (4) passes through the fixed seat (2) and is fixedly connected to a rotating shaft (5), the other end of the rotating shaft (5) is rotatably connected to a bearing (7), the bearing (7) is fixedly connected to the movable seat (6), a roller (8) is arranged on the surface of the rotating shaft (5), a slider (16) is fixedly connected to the bottom of the movable seat (6), the bottom plate ( A second slide groove (13) is provided on the surface of the base plate (1), the second slide groove (13) is movably connected to the slider (16), a limit slide groove (14) is provided on the surface of the second slide groove (13), a moving mechanism (15) is installed inside the base plate (1), the moving mechanism (15) passes through the limit slide groove (14) and is fixedly connected to the slider (16), a first slide groove (9) is provided on the surface of the base plate (1), a second motor (10) is installed at one end of the first slide groove (9), a bidirectional threaded rod (11) is fixedly connected to the output end of the second motor (10), and a clamping mechanism (12) is movably connected to the surface of the bidirectional threaded rod (11).

2. The unwinding mechanism of the gravure printing machine according to claim 1, characterized in that: The clamping mechanism (12) comprises a moving block (1201), an electric telescopic rod (1202), a connecting plate (1203), a fixed rod (1204) and an arc plate (1205); the moving block (1201) is movably connected to the surface of the bidirectional threaded rod (11); the electric telescopic rod (1202) is mounted on the top of the moving block (1201); the connecting plate (1203) is fixedly connected to the top of the electric telescopic rod (1202); the fixed rod (1204) is fixedly connected to the surface of the connecting plate (1203); and the arc plate (1205) is fixedly connected to one side of the fixed rod (1204).

3. The unwinding mechanism of the gravure printing machine according to claim 2, characterized in that: Two moving blocks (1201) are provided, and the interiors of the two moving blocks (1201) are respectively provided with internal threads for use in conjunction with the bidirectional threaded rod (11).

4. The unwinding mechanism of the gravure printing machine according to claim 1, characterized in that: The moving mechanism (15) comprises a third motor (1501), a threaded rotating rod (1502), a moving sleeve rod (1503) and a connecting bracket (1504); the third motor (1501) is installed inside the base plate (1); the threaded rotating rod (1502) is fixedly connected to the output end of the third motor (1501); the moving sleeve rod (1503) is movably connected to the outer surface of the threaded rotating rod (1502); and the connecting bracket (1504) is fixedly connected to the top of the moving sleeve rod (1503).

5. The unwinding mechanism of the gravure printing machine according to claim 4, characterized in that: Two second sliding grooves (13) are provided, and the size of the limiting sliding groove (14) is larger than the size of the connecting bracket (1504).

6. The unwinding mechanism of the gravure printing machine according to claim 4, characterized in that: The first slide groove (9) is arranged in parallel with the roller (8), and the sliding block (16) has the same width as the second slide groove (13).

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