Reverse weight reduction device of printing equipment tension system
By introducing a reverse weight reduction device of pulley set and weight reduction weight into the printing equipment, the problem that the tension roller cannot adjust the tension force is solved, flexible tension control for different printing media is achieved, and the flatness of the printing media is improved.
Patent Information
- Application Number
- CN202422403680.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In existing printing equipment, tension rollers cannot adapt to the diverse needs of different printing media, resulting in unadjustable tension, resulting in problems such as bending and wrinkling of the printing media.
A reverse weight reduction device including a pulley set, a traction rope and weight reduction weight is designed to adjust the tension force of the tension roller by adjusting the weight of the weight reduction weight, providing flexible tension control.
The tensioning force of different printing media is adjusted, reducing the bending and wrinkling of the printing media and improving the printing quality.
Smart Images
Figure CN223149878U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of printing, and specifically, to a reverse weight reduction device for a tension system of a printing device. Background Art
[0002] In large inkjet printing devices, the printing medium is unwound in the form of a coil, then enters the printer for printing, and is rewound after printing.
[0003] Among them, the printing medium passes from the unwinding side through the printing platform and is then taken up from the winding side, which requires a relatively long path. The printing medium is often relatively soft, and during the walking process, a series of problems such as bending and wrinkling will occur. Coupled with the fact that the printing medium often adopts a step-by-step traveling method, while the unwinding and winding adopt a uniform rotation method, it is necessary to tension the printing medium. Therefore, on the path where the printing medium travels, in addition to the cloth winding roller responsible for winding and turning, some tension rollers for tensioning the printing medium also need to be designed.
[0004] The basic design principle of the tension roller is to design a swingable gravity pendulum rod, and use the weight of the pendulum rod itself to press on the passing printing medium, so that the printing medium can always be flattened.
[0005] However, with the enrichment of printing media and the diversification of printing device capabilities, different printing media are put into use, but different printing media have different requirements for the tension force, which leads to the inability of the gravity pendulum rod with fixed specifications to meet the current diversified requirements.
[0006] In order to solve the above existing problems, people have been seeking an ideal technical solution. Summary of the Utility Model
[0007] The purpose of the utility model is to aim at the deficiencies of the prior art, and thus provide a reverse weight reduction device for a tension system of a printing device that can adjust the tension force of the tension roller.
[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is: a reverse weight reduction device for a tension system of a printing device, including a frame, a tension roller assembly, a pulley group, a traction rope, and a weight reduction weight;
[0009] The tension roller assembly includes a tension mechanism and a counterweight roller. The tension mechanism is installed on the frame, and the counterweight roller is arranged at the counterweight end of the tension mechanism;
[0010] The pulley group is installed in the area of the frame relatively above the tension roller assembly;
[0011] One end of the traction rope is connected to the counterweight roller, the middle part of the traction rope is wound around the pulley group, and the other end of the traction rope is suspended and connected to the weight reduction weight.
[0012] Based on the above, the pulley block, the traction rope and the weight-reducing weight are provided as a kit. At least two sets of the kit are provided and are at least installed on both ends of the tension roller assembly in a matching manner.
[0013] Based on the above, the tension mechanism is a swing rod or an inclined chute, and the counterweight roller is arranged at the outer end of the swing rod or in the chute.
[0014] Based on the above, there is at least one pulley in the pulley block.
[0015] Based on the above, the pulley block includes a first pulley, a second pulley and a third pulley. The first pulley is arranged vertically, the second pulley is arranged horizontally, and the third pulley is arranged vertically. The axes of the first pulley and the third pulley are perpendicular, and the groove of the second pulley is at the same height as the upper grooves of the first pulley and the third pulley.
[0016] Based on the above, the pulley block further includes an L-shaped folding plate which is fixed on the frame, and the first pulley, the second pulley and the third pulley are installed inside the right-angle space of the L-shaped folding plate.
[0017] Based on the above, a hanging ring is arranged on the upper part of the weight-reducing weight, a hook is arranged at the corresponding end of the traction rope, and the weight-reducing weight is detachably hung and connected with the traction rope; the traction rope is a steel wire rope or a nylon rope.
[0018] Based on the above, the weight-reducing weight includes a main weight, a weight-reducing block and a connecting rod. The weight-reducing block is an annular block with a notch on one side and a round hole in the center. The connecting rod is a connecting rod with a threaded section at the lower end and a hanging ring at the top. A threaded hole is arranged at the top of the main weight corresponding to the threaded section. The weight-reducing blocks are stacked and placed on the top of the main weight and sleeved on the outside of the connecting rod.
[0019] Based on the above, a weight set is further included, and the weight set is provided with weights of various weight specifications.
[0020] The utility model has substantial features and progress compared with the prior art. Specifically, on the basis of the original tension roller, the utility model adds a set of weight-reducing weight, a pulley block and a traction rope. The weight-reducing weight provides a reverse force to the tension roller to control the downward pressure tension of the tension roller, so that the tension force of the tension roller is controllable and adjustable, in order to cope with printing media of different materials and provide a more reasonable tension force.
[0021] Furthermore, the weight-reducing weight is designed to be able to change the weight reduction gravity by stacking annular blocks or by replacing weights, so as to control the tension force, making the adjustment of the tension force more flexible. Description of the Drawings
[0022] Figure 1It is a cross-sectional view of the reverse weight reduction device of the tension system of the printing device in the present utility model.
[0023] Figure 2 It is a front view of the reverse weight reduction device of the tension system of the printing device in the present utility model.
[0024] Figure 3 It is a partial view of the reverse weight reduction device of the tension system of the printing device in the present utility model.
[0025] In the figure: 1. Frame; 2. Tension roller assembly; 3. Pulley group; 4. Traction rope; 5. Weight reduction weight; 21. Swing arm; 22. Counterweight roller; 31. First pulley; 32. Second pulley; 33. Third pulley; 34. L-shaped folding plate; 51. Main weight; 52. Weight reduction block; 53. Connecting rod. Specific implementation manners
[0026] The technical solution of the present utility model will be further described in detail below through specific implementation manners.
[0027] Embodiment 1
[0028] As Figures 1 - 3 shown, a reverse weight reduction device for a tension system of a printing device includes a frame 1, a tension roller assembly 2, a pulley group 3, a traction rope 4, and a weight reduction weight 5.
[0029] The tension roller assembly 2 includes a swing arm 21 and a counterweight roller 22. The inner end of the swing arm 21 is hinged to the frame 1, and the outer end of the swing arm 21 is provided with the counterweight roller 22. The counterweight roller 22 is designed to have a relatively heavy weight, which is set based on the medium with the highest requirement for the tension force in the printing medium to be used.
[0030] The pulley group 3 is installed in the area of the frame 1 that is relatively above the tension roller assembly 2. In this embodiment, the pulley group 3 includes an L-shaped folding plate 34, a first pulley 31, a second pulley 32, and a third pulley 33. The L-shaped folding plate 34 is fixed to the frame 1. The first pulley 31 is arranged vertically, the second pulley 32 is arranged horizontally, the third pulley 33 is arranged vertically, the axes of the first pulley 31 and the third pulley 33 are perpendicular, the groove of the second pulley 32 is at the same height as the upper grooves of the first pulley 31 and the third pulley 33, and the first pulley 31, the second pulley 32, and the third pulley 33 are installed inside the right-angle space of the L-shaped folding plate 34.
[0031] One end of the traction rope 4 is connected to the outer end of the swing arm 21, the middle part of the traction rope 4 is wound around the pulley group 3, and the other end of the traction rope 4 is suspended and connected to the weight reduction weight 5.
[0032] In a preferred embodiment, the towing rope 4 is a steel wire rope or a nylon rope. A hanging hook is provided at the upper edge of the outer end of the swing arm 21, and a hook is provided at the corresponding end of the towing rope 4. The towing rope 4 is detachably hung and connected to the swing arm 21. The weight-reducing weight is located inside or outside the swing arm in the transverse direction of the frame.
[0033] Specifically, the towing rope 4 extends upward from the outer end of the swing arm 21, first bypasses the first pulley 31 and enters the second pulley 32 horizontally. The second pulley 32 then makes a 90° turn in the horizontal direction, and then enters the third pulley 33 and makes a 90° turn from horizontal to downward, becoming a hanging state, and is connected to the weight-reducing weight 5 to achieve weight-reducing traction.
[0034] The pulley block 3, the towing rope 4 and the weight-reducing weight 5 are used as a kit. At least two sets of the kits are provided and are at least installed at both ends of the tension roller assembly 2 to achieve force balance. In some equipment with a larger span, one or more sets can also be added in the central area.
[0035] For the convenience of replacing or adjusting the counterweight of the weight-reducing weight, in a preferred embodiment, a hanging ring is provided at the upper part of the weight-reducing weight 5, and a hook is provided at the corresponding end of the towing rope. The weight-reducing weight is detachably hung and connected to the towing rope. Specifically, in this embodiment, the weight-reducing weight includes a main weight 51, a weight-reducing block 52 and a connecting rod 53. The weight-reducing block 52 is an annular block with a notch on one side and a round hole in the center. The connecting rod 53 is a connecting rod with a threaded section at the lower end and a hanging ring at the top. A threaded hole is provided at the top of the main weight 51 corresponding to the threaded section. The weight-reducing blocks 52 are stacked and placed on the top of the main weight 51 and sleeved on the outside of the connecting rod 53.
[0036] In other embodiments, in order to increase the range of weight adjustment of the weights, a weight set is further included, and the weight set is provided with weights of various counterweight specifications.
[0037] Working principle description:
[0038] Before printing starts, install the feeding roll at the front. The front end of the printing medium of the feeding roll is manually or automatically wound around each cloth winding roll, including the tension roller group 2. The foremost end of the printing medium is finally wound and fixed on the take-up roll to complete the entire feeding process.
[0039] Then, according to the material parameters of the feeding roll, judge the required tension force, and adjust the overall counterweight of the weight-reducing weight 5, such as replacing the weights, or increasing or decreasing the number of weight-reducing blocks to adjust the overall counterweight, to achieve the adjustment of the tension force. When the material of the printing medium is changed, the counterweight of the weight-reducing weight 5 also needs to be adjusted synchronously.
[0040] Embodiment 2
[0041] In this embodiment, the main difference from Embodiment 1 is that the tension mechanism in the tension roller assembly is an inclined chute, the counterweight roller is slidably arranged in the chute, and the tension force is provided by the way of sliding in the chute by gravity. The end of the traction rope is connected to the counterweight roller, thereby adjusting the effective weight of the counterweight.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the specific implementation manners of the present invention can still be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solutions of the present invention, they should all be covered by the scope of the technical solutions claimed in the present invention.
Claims
1. A reverse weight reduction device for a tension system of a printing device, characterized in that: It includes a frame, a tension roller assembly, a pulley block, a towing rope and a weight-reducing weight. The tension roller assembly includes a tension mechanism and a counterweight roller. The tension mechanism is installed on the frame, and the counterweight roller is arranged at the counterweight end of the tension mechanism. The pulley block is installed in an area relatively above the tension roller assembly in the frame. One end of the towing rope is connected to the counterweight roller. The middle part of the towing rope is wound around the pulley block, and the other end of the towing rope is suspended and connected to the weight-reducing weight.
2. The reverse weight reduction device of the tension system of the printing device according to claim 1, characterized in that: The pulley block, the towing rope and the weight-reducing weight are used as a kit. There are at least two sets of the kits, and they are at least installed in pairs at both ends of the tension roller assembly.
3. The reverse weight reduction device of the printing device tension system according to claim 1 or 2, characterized in that: The tension mechanism is a swing rod or an inclined chute, and the counterweight roller is arranged at the outer end of the swing rod or in the chute.
4. The reverse weight reduction device of the printing device tension system according to claim 3, wherein: There is at least one pulley in the pulley block.
5. The reverse weight reduction device of the printing device tension system according to claim 4, characterized in that: The pulley block includes a first pulley, a second pulley and a third pulley. The first pulley is arranged vertically, the second pulley is arranged horizontally, the third pulley is arranged vertically. The axes of the first pulley and the third pulley are perpendicular, and the groove of the second pulley is at the same height as the upper grooves of the first pulley and the third pulley.
6. The reverse weight reduction device of the printing device tension system according to claim 5, characterized in that: The pulley block further includes an L-shaped folding plate. The L-shaped folding plate is fixed on the frame, and the first pulley, the second pulley and the third pulley are installed inside the right-angle space of the L-shaped folding plate.
7. The reverse weight reduction device of the printing device tension system according to claim 1 or 2 or 4 or 5 or 6, characterized in that: A hanging ring is arranged at the upper part of the weight-reducing weight, and a hook is arranged at the corresponding end of the towing rope. The weight-reducing weight is detachably connected to the towing rope by hanging; the towing rope is a steel wire rope or a nylon rope.
8. The reverse weight reduction device of the printing device tension system according to claim 7, characterized in that: The weight-reducing weight includes a main weight, a weight-reducing block and a connecting rod. The weight-reducing block is an annular block with a notch on one side and a round hole in the center. The connecting rod is a connecting rod with a threaded section at the lower end and a hanging ring at the top. A threaded hole is arranged at the top of the main weight corresponding to the threaded section. The weight-reducing blocks are stacked and placed on the top of the main weight and sleeved outside the connecting rod.
9. The reverse weight reduction device of the tension system of the printing device according to claim 8, characterized in that: It further includes a weight set, and the weight set is provided with weights of various weight specifications.