Tensioning device of packaging printing machine

Abstract

The utility model discloses a packing printing machine tensioning device, which relates to the technical field of printing machines, and comprises a printing cavity, a feeding roller and a discharging roller, a supporting plate is arranged in the printing cavity, a first adjusting assembly is arranged on the supporting plate, the supporting plate is hinged with a connecting plate through the first adjusting assembly, and the connecting plate is provided with a second adjusting assembly. A first transmission roller is fixedly connected to the connecting plate, a second adjusting assembly is arranged on the connecting plate, a second transmission roller is fixedly connected to the connecting plate through the second adjusting assembly, and the position of the first transmission roller can be changed through the first adjusting assembly so that the first transmission roller can be matched with the discharging roller to open printing paper. And the position of the second transmission roller can be changed through the second adjusting assembly, so that conveying of the printing paper is not affected, meanwhile, pleats can be removed, meanwhile, pleats of the printing paper with different thicknesses can be removed, and the device is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to a tensioning device for a packaging printing machine. Background Art

[0002] Packaging printing is the printing process that uses various packaging materials as carriers, and prints decorative patterns, designs or texts on the packaging to make the product more attractive or more descriptive, thereby conveying information and increasing sales; packaging includes printing on packaging cartons, packaging bottles, packaging cans, etc.

[0003] Chinese patent publication number CN215041237U discloses "a tensioning device for a plastic film printing machine" including a printing chamber, a feeder and an adjusting device, wherein the feeder is arranged on one side of the printing chamber, and the adjusting device is connected to the bottom of the printing chamber, and the adjusting device includes a support plate, a fixed block, a sliding block, a transmission rod, a connecting rod, a lead screw, a transmission block and a motor, wherein the sliding block can be slidably arranged on the lead screw, the transmission block is arranged on the fixed block, one end of the transmission rod is hinged on the fixed block, and the other end of the transmission rod is hinged on one end of the transmission block, one end of the connecting rod is hinged on one side of the sliding block, and the other end of the connecting rod is hinged on one end of the transmission block. The utility model relates to the technical field of printing equipment, and specifically provides a tensioning device for a plastic film printing machine that is highly practical, simple to use, easy to adjust, prevents incomplete printing, and improves work efficiency.

[0004] The device in the above patent can support and stretch the printed paper to prevent incomplete printing. However, when there are wrinkles on the printed paper, the conveying device cannot stretch the wrinkles, so the printed pattern on the paper is printed on the wrinkles, which makes the paper appear unsightly. Therefore, it is particularly important to solve the wrinkles on the printed paper. A packaging printing tensioning device is now proposed to solve the problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide a tensioning device for a packaging printing machine to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a packaging printing machine tensioning device, including a printing cavity, a feed roller and a discharge roller, a support plate is provided in the printing cavity, a first adjustment component is provided on the support plate, the support plate is hinged with a connecting plate through the first adjustment component, a first transmission roller is fixedly connected to the connecting plate, a second adjustment component is provided on the connecting plate, and a second transmission roller is fixedly connected to the connecting plate through the second adjustment component.

[0007] Furthermore, the first adjusting component includes a bracket, a driving motor is provided on the bracket, a screw rod is provided on the rotating shaft of the driving motor, the screw rod is rotatably connected to the bracket, the bracket is rotatably connected to a support rod, the support rod is hinged to a connecting plate, a first moving block is provided on the screw rod, a traction rod is hinged on the moving block, the traction rod is hinged to the connecting plate, the rotating shaft of the driving motor drives the screw rod to rotate, the rotation of the screw rod can drive the first moving block to move, a nut is screwed on the screw rod, the nut is rotatably connected to the first moving block, so that the first moving block does not rotate when moving on the screw rod, the movement of the first moving block will move with the traction rod, and the traction rod will pull the connecting plate or abut the connecting plate to move, here the bracket and the support rod play the role of supporting the connecting plate, by adjusting the second component, the position of the first transmission roller can be moved, and by adjusting the position of the first transmission roller, the distance from the discharge roller can be changed, thereby having the effect of spreading the printed paper.

[0008] Furthermore, the second adjusting component includes a rectangular groove opened on the connecting plate, a rotating rod is rotatably connected in the rectangular groove, the rotating rod is provided with two opposite threaded sections, and the rotating rod is provided with a second moving block at the two opposite threaded sections, the two second moving blocks are hinged with a connecting rod, and the two connecting rods are hinged to the same moving plate, the moving plate is rotatably connected to the second transmission roller, and the rotating rod is rotated by a motor or other power source, and the two second moving blocks on the rotating rod will move on the two opposite threaded sections on the rotating rod, and the second moving blocks will simultaneously approach or move away from each other, the second moving block is screwed to the rotating rod through a nut, and the nut is rotatably connected to the second moving block, and the two second moving blocks can be pulled by the connecting rod or abutted against the moving plate to change the position of the moving plate, and by changing the distance between the second transmission roller and the first transmission roller, the paper can be transmitted at the same thickness without affecting the paper transmission, if there are wrinkles on the paper, the different thicknesses will make the wrinkles flattened in time, and the paper of different thicknesses can also be de-wrinkled.

[0009] Furthermore, two guide rods are provided on the support plate, and both guide rods are slidably connected to the movable plate. On the one hand, the guide rods support the movable plate, and on the other hand, they guide the movable plate so that the guide rods only move along the direction of the guide rods.

[0010] Furthermore, there are two groups of brackets, both groups of brackets are rotatably connected with support rods, and the two support rods are hinged to the same connecting plate. The movement of the connecting plate can be made more stable through the two groups of brackets and the support rods.

[0011] Compared with the prior art, the packaging printing machine tensioning device provided by the utility model can change the position of the first transmission roller through the first adjusting component and then cooperate with the discharge roller to stretch the printed paper. The position of the second transmission roller can be changed through the second adjusting component without affecting the transmission of the printed paper while removing wrinkles. At the same time, it can remove wrinkles on printed papers of different thicknesses, making the device more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 A schematic diagram of the overall structure of the device provided in the embodiment of the utility model;

[0014] Figure 2 A schematic diagram of the enlarged structure of point A provided in an embodiment of the utility model;

[0015] Figure 3 A schematic diagram of the structure of a first adjustment component provided in an embodiment of the utility model;

[0016] Figure 4 A schematic diagram of the structure of a second adjustment component provided in an embodiment of the utility model;

[0017] Figure 5 A schematic diagram of a simple working structure provided for an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1. Printing cavity; 11. Feed roller; 12. Discharge roller; 13. First transmission roller; 14. Second transmission roller; 2. Support plate; 21. Bracket; 211. Drive motor; 212. Screw rod; 213. Support rod; 22. Guide rod; 3. Connecting plate; 31. Rectangular groove; 32. Rotating rod; 4. First moving block; 41. Drawing rod; 5. Second moving block; 51. Connecting rod; 511. Moving plate. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] See also Figure 1-5The packaging printing machine tensioning device provided by the embodiment of the utility model comprises a printing cavity 1, a feeding roller 11 and a discharging roller 12. A supporting plate 2 is provided in the printing cavity 1, and a first adjusting component is provided on the supporting plate 2. The supporting plate 2 is hinged with a connecting plate 3 through the first adjusting component. A first transmission roller 13 is fixedly connected to the connecting plate 3. A second adjusting component is provided on the connecting plate 3. A second transmission roller 14 is fixedly connected to the connecting plate 3 through the second adjusting component. The position of the first transmission roller 13 can be changed by the first adjusting component, so that the first transmission roller 13 cooperates with the feeding roller 11 and the discharging roller 12 to stretch the printing paper. When the first adjusting component changes the position of the connecting plate 3, the position of the second adjusting component of the connecting plate 3 will also be changed to follow the first adjusting component, and the second adjusting component changes the position of the second transmission roller 14. The cooperation of the second transmission roller 14 with the first transmission roller 13 can not affect the wrinkles of the printing paper on the one hand, and can also change the distance between the two transmission rollers to remove wrinkles of printing papers of different thicknesses on the other hand.

[0022] Compared with the prior art, the packaging printing machine tensioning device provided by the utility model can change the position of the first transmission roller 13 through the first adjusting component and then cooperate with the discharge roller 12 to stretch the printed paper. The position of the second transmission roller 14 can be changed through the second adjusting component without affecting the transmission of the printed paper while removing wrinkles. At the same time, it can remove wrinkles on printed papers of different thicknesses, making the device more practical.

[0023] As a preferred technical solution of this embodiment, the first adjustment component includes a bracket 21, a driving motor 211 is provided on the bracket 21, a screw 212 is provided on the rotating shaft of the driving motor 211, the screw 212 is rotatably connected to the bracket 21, the bracket 21 is rotatably connected to a support rod 213, the support rod 213 is hinged to the connecting plate 3, a first moving block 4 is provided on the screw 212, a traction rod 41 is hinged to the first moving block 4, the traction rod 41 is hinged to the connecting plate 3, the rotating shaft of the driving motor 211 drives the screw 212 to rotate, and the rotation of the screw 212 can drive the first moving block 4 to move Movement, a nut is screwed on the screw rod 212, and the nut is rotatably connected to the first moving block 4, so that the first moving block 4 will not rotate when moving on the screw rod 212, and the movement of the first moving block 4 will move with the traction rod 41, and the traction rod 41 will pull the connecting plate 3 or abut the connecting plate 3 to move, here the bracket 21 and the support rod 213 play the role of supporting the connecting plate 3, and the position of the first transmission roller 13 can be moved by adjusting the second component, and the distance from the discharge roller 12 can be changed by adjusting the position of the first transmission roller 13, which has the effect of spreading the printed paper.

[0024] As a preferred technical solution of this embodiment, the second adjustment component includes a rectangular groove 31 opened on the connecting plate 3, a rotating rod 32 is rotatably connected in the rectangular groove 31, the rotating rod 32 is provided with two opposite threaded sections, and the rotating rod 32 is provided with a second moving block 5 at the two opposite threaded sections, and the two second moving blocks 5 are both hinged with a connecting rod 51, and the two connecting rods 51 are both hinged to the same moving plate 511, and the moving plate 511 is rotatably connected to the second transmission roller 14. By providing a motor or other power source to rotate the rotating rod 32, the two second moving blocks 5 on the rotating rod 32 will be on the relative positions of the rotating rod 32. When the two threaded sections move, the second moving blocks 5 will approach or move away from each other at the same time. The second moving blocks 5 are screwed to the rotating rod 32 through a nut, and the nut is rotatably connected to the second moving blocks 5. The two second moving blocks 5 can be pulled by the connecting rod 51 or abut the moving plate 511 to change the position of the moving plate 511. By changing the distance between the second transmission roller 14 and the first transmission roller 13, the paper can be transmitted with the same thickness without affecting the paper transmission. If there are wrinkles on the paper, the wrinkles will be flattened in time with different thicknesses, and the paper of different thicknesses can also be de-wrinkled.

[0025] As a preferred technical solution of this embodiment, two guide rods 22 are provided on the support plate 2, and the two guide rods 22 are both slidably connected to the movable plate 511. On the one hand, the guide rods 22 support the movable plate 511, and on the other hand, they can guide the movable plate 511 so that the guide rods 22 only move along the direction of the guide rods 22.

[0026] As a preferred technical solution of this embodiment, there are two groups of brackets 21, and both groups of brackets 21 are rotatably connected with support rods 213. The two support rods 213 are hinged to the same connecting plate 3. The movement of the connecting plate 3 can be made more stable through the two groups of brackets 21 and the support rods 213.

[0027] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tensioning device for a packaging printing machine, comprising a printing chamber (1), a feeding roller (11) and a discharging roller (12), characterized in that: A support plate (2) is provided in the printing chamber (1), a first adjustment component is provided on the support plate (2), a connecting plate (3) is hingedly connected to the support plate (2) via the first adjustment component, a first transmission roller (13) is fixedly connected to the connecting plate (3), a second adjustment component is provided on the connecting plate (3), and a second transmission roller (14) is fixedly connected to the connecting plate (3) via the second adjustment component.

2. The packaging printing machine tensioning device according to claim 1, characterized in that: The first adjustment assembly comprises a bracket (21), the bracket (21) being provided with a driving motor (211), a screw rod (212) being provided on a rotating shaft of the driving motor (211), the screw rod (212) being rotatably connected to the bracket (21), a support rod (213) being rotatably connected to the bracket (21), the support rod (213) being hinged to a connecting plate (3), a first moving block (4) being provided on the screw rod (212), a traction rod (41) being hinged to the first moving block (4), and the traction rod (41) being hinged to the connecting plate (3).

3. The tensioning device of the packaging printing machine according to claim 1, characterized in that: The second adjustment component comprises a rectangular groove (31) formed on the connecting plate (3), a rotating rod (32) being rotatably connected in the rectangular groove (31), the rotating rod (32) being provided with two opposite threaded sections, second moving blocks (5) being provided at the two opposite threaded sections on the rotating rod (32), the two second moving blocks (5) being hinged with connecting rods (51), the two connecting rods (51) being hinged to the same moving plate (511), and the moving plate (511) being rotatably connected to the second transmission roller (14).

4. The tensioning device of a packaging printing machine according to claim 3, characterized in that: Two guide rods (22) are provided on the support plate (2), and the two guide rods (22) are both slidably connected to the movable plate (511).

5. The tensioning device of a packaging printing machine according to claim 2, characterized in that: There are two groups of brackets (21), and both groups of brackets (21) are rotatably connected to support rods (213), and the two support rods (213) are hinged to the same connecting plate (3).

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