Printing tensioning device and sticker production device

Abstract

The utility model relates to a printing tensioning device and a sticker production device, the printing tensioning device is used for tensioning a printing piece on a printing machine, the printing machine comprises a first state for driving the printing piece to advance and a second state for driving the printing piece to retreat during printing operation, the printing tensioning device comprises a movable roller, a sliding structure and a feedback assembly, the printing piece bypasses the movable roller, and the feedback assembly is connected with the sliding structure. The movable roller is used for tensioning the printing piece in one of the first state and the second state; the sliding mechanism is arranged in the advancing or retreating direction of the printing piece, and the movable roller is arranged on the sliding mechanism in a sliding mode. The feedback assembly drives the movable roller to slide along the sliding structure in the other state of the first state or the second state so as to tension the printing piece. Through the movable roller, the sliding structure and the feedback assembly, the printing piece can be tensioned in the first state or the second state of printing work, and breakage or adhesion caused by looseness of the printing piece is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of printing, and in particular, to a printing tensioning device and a sticker production device. Background Art

[0002] Currently, during the printing process of a printing press on printed materials such as paper, canvas, or stickers, a pulling head is used to drive the printed material to move into the color group for printing. To achieve seamless docking of the printed patterns on the printed material, an intermittent printing method is usually adopted. That is to say, after the pulling head drives the printed material forward into the printing press for printing one pattern, it will drive the printed material to move backward so that the printed material retreats a certain distance, and then move forward for printing the next pattern. When the printed material moves backward, the printed material will become slack and then be damaged by folding or sticking, resulting in damage to the printed material. Summary of the Invention

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the present application is to provide a printing tensioning device and a sticker production device, which can keep the printed material in a tensioned state after intermittent printing and avoid damage to the printed material caused by folding or sticking.

[0004] The above object of the present application is achieved through the following technical solutions:

[0005] A printing tensioning device is used to tension the printed material on a printing press. When the printing press is in the printing operation, it includes a first state of driving the printed material forward and a second state of driving the printed material backward.

[0006] The printing tensioning device includes a movable roller around which the printed material passes. The movable roller tensions the printed material in one of the first state or the second state.

[0007] The printing tensioning device further includes a sliding structure arranged along the forward or backward direction of the printed material, and the movable roller is slidably arranged on the sliding structure.

[0008] The printing tensioning device further includes a feedback component that drives the movable roller to slide along the sliding structure in the other state of the first state or the second state to tension the printed material.

[0009] By adopting the above technical solutions, through the movable roller and the sliding structure, the printed material can be tensioned in the first state or the second state of the printing operation, avoiding damage to the printed material caused by slackness.

[0010] The present application is further configured such that the feedback assembly includes two mounting brackets and two springs. The two mounting brackets are respectively connected to two sides of the movable roller. One end of each spring is fixedly arranged, and the other end of each spring is connected to one of the mounting brackets.

[0011] The present application is further configured such that in the second state, the spring is in a stretched state, and the power for the printing machine to drive the printed material to retreat is greater than the elastic force of the spring.

[0012] The present application is further configured such that the sliding structure includes a sliding cover and a convex rail. The convex rail is fixedly arranged along the advancing or retreating direction of the printed material. The sliding cover is fixedly arranged on the mounting bracket. The sliding cover is in a cover shape and is slidably mounted on the convex rail.

[0013] The present application is further configured such that there are two sliding covers and two convex rails. The two sliding covers are respectively connected to the side walls of the two mounting brackets opposite to the movable roller, and each sliding cover cooperates with one convex rail.

[0014] The present application is further configured such that the feedback assembly includes two elastic members. One end of each of the two elastic members is fixedly arranged, and the other ends of the two elastic members are respectively connected to two ends of the movable roller.

[0015] The present application is further configured such that the sliding structure includes two sliders and two chutes. The two chutes are along the advancing or retreating direction of the printed material. The two sliders are respectively fixedly connected to two ends of the movable roller, and each slider is slidably disposed in one of the chutes.

[0016] The present application is further configured such that the feedback assembly includes a tension sensor and a moving assembly. The tension sensor detects the tension of the printed material on the movable roller. The tension sensor is connected to the moving assembly, and the moving assembly drives the movable roller to slide along the sliding structure.

[0017] The present application is further configured such that the printed material bypasses the movable roller and deflects its moving direction, and the deflection angle of the moving direction is not less than 90°.

[0018] A sticker production device includes the above-mentioned printing tension device, and further includes a sticker manufacturing device, the printing machine, and a sticker winding device. The sticker manufacturing device and the printing machine are arranged at the front end of the printing tension device, and the sticker winding device is arranged at the rear end of the printing tension device.

[0019] In summary, the beneficial technical effects of the present application are:

[0020] 1. The present application can tension the printed matter in the first state or the second state of the printing operation through the movable roller, the sliding structure, and the feedback component, avoiding creasing or sticking caused by the slack of the printed matter.

[0021] 2. The present application effectively tensions the printed matter, improving the printing quality. The tensioned printed matter can better maintain flatness, avoiding wrinkles or deformations during the printing process, thereby improving the printing quality.

[0022] 3. The present application effectively tensions the printed matter, preventing ink contamination. The tensioned printed matter can avoid contacting each other during the printing process, preventing ink contamination, improving the product yield rate, and effectively avoiding downtime or rework caused by creasing or sticking, improving production efficiency.

[0023] 4. The present application adopts a sliding structure to tension the printed matter in a sliding manner, avoiding overstretching or damaging the printed matter. The sliding structure can automatically adjust the tension force according to the movement state of the printed matter, avoiding overstretching or damaging the printed matter.

[0024] 5. The feedback component provided in the present application drives the movable roller to move along the sliding structure, that is, along the advancing or retreating direction of the printed matter. That is to say, when the movable roller moves, it is in the same direction as the movement direction of the printed matter, the relative movement speed between the two is lower, and the friction force is also smaller, reducing the damage to the printed matter and effectively preventing the printed matter from being stretched or damaged. Description of the Drawings

[0025] Figure 1 is a schematic diagram of a printing tensioning device.

[0026] Figure 2 is a side view of Embodiment 1 of the printing tensioning device.

[0027] Figure 3 is an isometric view of Embodiment 1 of the printing tensioning device from the first angle.

[0028] Figure 4 is an isometric view of Embodiment 1 of the printing tensioning device from the second angle.

[0029] Figure 5 is an isometric view of Embodiment 2 of the printing tensioning device.

[0030] Figure 6 is a side view of Embodiment 2 of the printing tensioning device.

[0031] Explanation of the Reference Numerals in the Drawings: 11, movable roller; 12, feedback component; 13, sliding structure; T, printed matter; 121, mounting bracket; 122, spring; 123, elastic member; 131, sliding cover; 132, convex rail; 133, slider; 134, sliding groove. Detailed Embodiments

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] As Figure 1 shown, a printing tensioning device is shown for tensioning a printing piece T on a printing press. The printing press includes a first state of driving the printing piece T forward and a second state of driving the printing piece T backward during printing operations.

[0034] The printing tensioning device includes a movable roller 11. The printing piece T bypasses the movable roller 11, and the movable roller 11 tensions the printing piece T in one of the first state or the second state.

[0035] The printing tensioning device further includes a sliding structure 13. The sliding structure 13 is arranged along the direction of the forward or backward movement of the printing piece T, and the movable roller 11 is slidably arranged on the sliding structure 13.

[0036] The printing tensioning device further includes a feedback component 12. The feedback component 12 drives the movable roller 11 to slide along the sliding structure 13 in the other state of the first state or the second state to tension the printing piece T.

[0037] Through the coordinated work of the movable roller 11, the sliding structure 13 and the feedback component 12, dynamic tensioning is achieved in the forward and backward states of the printing piece T, improving printing accuracy and stability.

[0038] In a preferred embodiment, the feedback component 12 includes a tension sensor and a moving component. The tension sensor detects the tension force of the printing piece T on the movable roller 11. The tension sensor is connected to the moving component, and the moving component drives the movable roller 11 to slide along the sliding structure 13.

[0039] Preferably, the moving component is selected as a cylinder, which expands and contracts to drive the movable roller 11 to slide along the sliding structure 13. More preferably, the moving component is selected as a hydraulic cylinder, which expands and contracts to drive the movable roller 11 to slide along the sliding structure 13.

[0040] Preferably, the tension sensor can be selected as the tension sensor in a Chinese invention application with the publication number CN118651726A for a blended yarn production device; preferably, the tension sensor can also be selected as the tension sensor in a Chinese utility model patent with the publication number CN221480201U for a yarn unwinding mechanism of a sectional warping machine.

[0041] Taking the above examples, it is only to illustrate the specific structure and principle of the tension sensor, which is a conventional technical means in the field. It only needs to sense the tension force received by the printing piece T. For its specific principle, refer to the above examples and the conventional technology in the field, and it will not be elaborated here.

[0042] During the forward or backward movement of the printed material T, the movable roller 11 will automatically adjust its position according to the signal of the feedback component 12, always maintaining an appropriate tension on the printed material T. This can effectively avoid the slack or over-tightening of the printed material T during movement, thereby improving printing accuracy and stability and reducing printing defects.

[0043] In another preferred embodiment, the feedback component 12 includes a printing action detection device and a moving component. The printing action detection device detects the action of the printing machine, and thereby obtains the forward or backward state of the printed material T. The printing action detection device feeds back the forward or backward state of the printed material T to the moving component, and the moving component drives the movable roller 11 to slide along the sliding structure 13.

[0044] Preferably, the moving component is a cylinder, which expands and contracts to drive the movable roller 11 to slide along the sliding structure 13. More preferably, the moving component is a hydraulic cylinder, which expands and contracts to drive the movable roller 11 to slide along the sliding structure 13.

[0045] It should be noted that the printed material T bypasses the movable roller 11 and deflects its moving direction, and the deflection angle of the moving direction is not less than 90°.

[0046] As Figures 2 to 4 shown, the structure of Embodiment 1 of the printing tension device is shown. The feedback component 12 includes two mounting brackets 121 and two springs 122. The two mounting brackets 121 are respectively connected to both sides of the movable roller 11. One end of each spring 122 is fixedly arranged, and the other end of each spring 122 is connected to a mounting bracket 121.

[0047] The mounting bracket 121 has a vertical plate and a plurality of horizontal plates. The plurality of horizontal plates are all connected to the vertical plate. The other end of the spring 122 is connected to the vertical plate, and the movable roller 11 is connected to the horizontal plate.

[0048] Preferably, in the first state, the spring 122 undergoes elastic deformation, that is, the spring 122 is compressed when the printed material T moves forward, and the spring 122 is in its natural state when the printed material T moves backward.

[0049] Preferably, in the second state, the spring 122 undergoes elastic deformation, that is, the spring 122 is stretched when the printed material T moves backward, and the spring 122 is in its natural state when the printed material T moves forward.

[0050] Preferably, in the first state and the second state, the spring 122 both undergoes elastic deformation, that is, the spring 122 is compressed when the printed material T moves forward, and the spring 122 is stretched when the printed material T moves backward, and the spring 122 is in a state between the two in its natural state.

[0051] Specifically, by limiting the stroke of the movable roller 11 sliding along the sliding structure 13, it can be ensured that when the printed material T advances, the movable roller 11 will move to the end point of the stroke. At this time, the position of the movable roller 11 can be limited when the printed material T advances, and the spring 122 will not deform due to the advancement of the printed material T. Similarly, by limiting that the movable roller 11 will move to the end point of the stroke when the printed material T retreats, the position of the movable roller 11 can also be limited when the printed material T retreats, and the spring 122 will not deform due to the retreat of the printed material T.

[0052] The advancing and retreating directions of the above-mentioned printed material T are as Figure 1 shown, Figure 1 In the figure, the direction indicated by the arrow on the printing machine is the advancing direction of the printed material T, and the direction opposite to it is the retreating direction of the printed material T.

[0053] The spring 122 generates elastic deformation when the printed material T advances or retreats, providing a tension force, thus achieving precise control of the tension force of the printed material T. Using the spring 122 to achieve dynamic adjustment can effectively prevent the printed material T from becoming slack or over-tight during movement, thereby improving printing accuracy and stability and reducing printing defects. Especially in the case of large changes in printing speed or uneven thickness of the printed material T, this dynamic adjustment function is even more important and can effectively ensure printing quality.

[0054] Compared with other feedback components 12, this design has a simple structure, is easy to manufacture and install, and can effectively reduce costs. At the same time, this design uses the spring 122 as a feedback element, which has good durability and reliability and can effectively reduce maintenance costs.

[0055] Through the dynamic adjustment function of the spring 122, the feedback component 12 does not require manual intervention to adjust the tension force, simplifies the operation, and improves the operation convenience. At the same time, due to its dynamic adjustment function, it can adapt to the needs of different printed materials T and different printing speeds, improving the versatility and flexibility of the printing equipment.

[0056] Furthermore, the driving force for the printing machine to drive the printed material T to retreat is greater than the elastic force of the spring 122.

[0057] Furthermore, the sliding structure 13 includes a sliding cover 131 and a convex rail 132. The convex rail 132 is fixedly arranged along the advancing or retreating direction of the printed material T. The sliding cover 131 is fixedly arranged on the mounting bracket 121. The sliding cover 131 is in a cover shape and is slidably mounted on the convex rail 132.

[0058] Even further, there are two sliding covers 131 and two convex rails 132 respectively. The two sliding covers 131 are respectively connected to the side walls of the two mounting brackets 121 opposite to the movable roller 11, and each sliding cover 131 cooperates with one convex rail 132.

[0059] In a preferred embodiment, balls are provided inside the sliding cover 131, and rolling fit is achieved through the balls and the convex rail 132.

[0060] As Figures 5 to 6 shown, the structure of the printing tensioning device in Embodiment 2 is shown. The feedback assembly 12 includes two elastic members 123. One ends of the two elastic members 123 are fixedly arranged, and the other ends of the two elastic members 123 are respectively connected to both ends of the movable roller 11. The sliding structure 13 includes two sliders 133 and two sliding grooves 134. The two sliding grooves 134 are along the advancing or retracting direction of the printed material T. The two sliders 133 are respectively fixedly connected to both ends of the movable roller 11, and each slider 133 is slidably arranged in a sliding groove 134.

[0061] Compared with Embodiment 1, the structure of Embodiment 2 is simpler, and the deformation of the elastic member 123 can automatically adjust the position of the movable roller 11 according to the motion state of the printed material T, always maintaining an appropriate tension force on the printed material T. The slider 133 slides in the sliding groove 134, which can effectively prevent the movable roller 11 from jamming or jumping during the movement process, thereby improving the printing accuracy and stability and reducing printing defects.

[0062] Adopting the flexible design of the elastic member 123 can effectively buffer the impact force during the movement of the printed material T and reduce the risk of printing damage. The cooperation between the slider 133 and the sliding groove 134 can realize the smooth sliding of the movable roller 11 and avoid the excessive stretching or damage caused by the traditional fixed tensioning method.

[0063] A sticker production device includes the above-mentioned printing tensioning device, and further includes a sticker manufacturing device, a printing machine, and a sticker winding device. The sticker manufacturing device and the printing machine are arranged at the front end of the printing tensioning device, and the sticker winding device is arranged at the rear end of the printing tensioning device.

[0064] Specifically, the above-mentioned printed material T is a sticker, and the printing machine uses an intermittent printing method to print patterns on the paper surface of the sticker. The backward movement generated by the sticker during the printing process will affect the flatness and efficiency of winding. The printing tensioning device effectively offsets this backward movement, realizes the smooth winding of the sticker, improves the winding efficiency. Since the sticker does not move backward during the winding process, the winding device can wind at a higher speed, improving the production efficiency.

[0065] It avoids the pauses or repeated adjustments during the winding process caused by the backward movement, saves the winding time, and improves the overall production efficiency. It improves the winding quality. After canceling out the backward movement, the sticker can be wound smoothly on the reel, avoiding the unevenness of the reel surface caused by the backward movement and improving the winding quality. The flat reel can be better stored and transported, reducing the risk of damage caused by curling or deformation and improving the product quality. It reduces the wear of the winding device. Since the sticker can be wound smoothly, the load on the winding device is reduced, the wear of the winding device is decreased, and the service life of the equipment is extended. It avoids the jamming or damage of the winding device caused by the backward movement and reduces the maintenance cost. It enhances the adaptability of winding. The printing tension device can be adjusted according to the characteristics of different stickers to ensure that different types of stickers can be wound smoothly, enhancing the adaptability of winding. It can adapt to the winding of stickers with different speeds and different sizes, improving the flexibility of production.

[0066] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A printing tensioning device for tensioning a printing piece (T) on a printing press, wherein the printing press includes a first state of driving the printing piece (T) forward and a second state of driving the printing piece (T) backward during a printing operation, characterized in that, The printing tensioning device includes a movable roller (11) around which the printed material (T) passes. The movable roller (11) tensions the printed material (T) in one of the first state or the second state; a sliding structure (13) arranged along the advancing or retracting direction of the printed material (T). The movable roller (11) is slidably arranged on the sliding structure (13); a feedback assembly (12) that drives the movable roller (11) to slide along the sliding structure (13) in the other of the first state or the second state to tension the printed material (T).

2. The printing tension device according to claim 1, characterized in that, The feedback assembly (12) includes two mounting brackets (121) and two springs (122). The two mounting brackets (121) are respectively connected to both sides of the movable roller (11). One end of each spring (122) is fixedly arranged, and the other end of each spring (122) is connected to one of the mounting brackets (121).

3. The printing tension device according to claim 2, characterized in that, In the second state, the spring (122) is in a stretched state, and the power of the printing press to drive the printed material (T) to retract is greater than the elastic force of the spring (122).

4. The printing tension device according to claim 2, characterized in that, The sliding structure (13) includes a sliding cover (131) and a convex rail (132). The convex rail (132) is fixedly arranged along the advancing or retracting direction of the printed material (T). The sliding cover (131) is fixedly arranged on the mounting bracket (121). The sliding cover (131) is in a cover shape and is slidably mounted on the convex rail (132).

5. The printing tension device according to claim 4, characterized in that, There are two sliding covers (131) and two convex rails (132). The two sliding covers (131) are respectively connected to the side walls of the two mounting brackets (121) opposite to the movable roller (11). Each sliding cover (131) cooperates with one convex rail (132).

6. The printing tension device according to claim 1, characterized in that, The feedback assembly (12) includes two elastic members (123). One end of each of the two elastic members (123) is fixedly arranged, and the other ends of the two elastic members (123) are respectively connected to both ends of the movable roller (11).

7. The printing tension device according to claim 6, wherein, The sliding structure (13) includes two sliders (133) and two chutes (134). The two chutes (134) are along the advancing or retracting direction of the printed material (T). The two sliders (133) are respectively fixedly connected to both ends of the movable roller (11). Each slider (133) is slidably arranged in one of the chutes (134).

8. The printing tension device according to claim 1, wherein The feedback assembly (12) includes a tension sensor and a moving assembly. The tension sensor detects the tension of the printed material (T) on the movable roller (11). The tension sensor is connected to the moving assembly, and the moving assembly drives the movable roller (11) to slide along the sliding structure (13).

9. The printing tension device according to claim 1, wherein The printed material (T) passes around the movable roller (11) and deflects its moving direction, and the deflection angle of the moving direction is not less than 90°.

10. A sticker production device, characterized in that, It includes the printing tensioning device according to any one of claims 1 to 9, and further includes a sticker manufacturing device, the printing press, and a sticker winding device. The sticker manufacturing device and the printing press are arranged at the front end of the printing tensioning device, and the sticker winding device is arranged at the rear end of the printing tensioning device.

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