A white card feeding pressure adjusting device

Abstract

The utility model relates to a white card production equipment technical field, concretely relates to a kind of white card feeding pressure regulating device, including two side plates to form the white card feeding channel by being relatively parallel arrangement;Two sides are rotatably connected to side plate by bearing, and driven roller is driven by motor;Pressure roller is arranged above driven roller, and pressure roller is used to compact white card above driven roller;Sliding slot is opened in the surface of side plate, and the shaft end of pressure roller is inserted into sliding slot, the shaft end of pressure roller is slidably connected in sliding slot, and when sliding along the length direction of sliding slot, the central axis of pressure roller is always parallel and coplanar with the central axis of driven roller;Pressing part, pressing part is used to exert the pressure of driven roller towards driven roller movement;By the screwing depth of accurate adjusting bolt, the compression amount of spring can be changed, so that the pressure exerted on pressure roller is linearly and infinitely adjusted, and the best compacting force control of white card paper of different thickness, different surface characteristics is realized.

Description

Technical Field

[0001] This utility model relates to the technical field of white card production equipment, specifically to a white card feeding pressure regulating device. Background Technology

[0002] In the printing and packaging industries, white cardboard is widely used in the production of high-end packaging boxes, business cards, hang tags, and other products due to its high stiffness and heavy weight. In automated production equipment for these products, a stable and reliable feeding mechanism is crucial for ensuring product quality and production efficiency.

[0003] Currently, most common feeding mechanisms employ a combination of a drive roller and a pressure roller. The pressure roller presses the material firmly against the drive roller, utilizing friction for transmission. However, traditional feeding pressure adjustment devices have several shortcomings for thicker, stiffer materials like white cardboard. For example, patent application CN202421576542.9 proposes a "winding device for white cardboard production," which uses inclined leveling rollers to level and press the edges of the white cardboard during transport, reducing wrinkles and improving surface quality during winding. However, this solution, along with other existing technologies using eccentric wheels or screws for direct pressure adjustment, suffers from the inability to adjust the clamping force. This can lead to excessive pressure due to rigid contact, crushing the paper edges, or insufficient pressure causing slippage and affecting feeding accuracy. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a white card feeding pressure regulating device that can stably regulate the clamping force applied to the surface of the white card during feeding.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A white cardboard feeding pressure regulating device, comprising:

[0007] Two side plates are arranged relatively parallel to each other to form a feeding channel for white cardboard.

[0008] The active rollers are rotatably connected to the side plates via bearings on both sides and are driven by a motor.

[0009] A pressure roller is positioned above the drive roller to press the white card firmly against the drive roller.

[0010] The side plate surface is provided with a sliding groove, the shaft end of the pressure roller extends into the sliding groove, the shaft end of the pressure roller is slidably connected to the sliding groove, and when sliding along the length direction of the sliding groove, the central axis of the pressure roller is always parallel and coplanar with the central axis of the drive roller;

[0011] A clamping element is used to apply pressure to the pressure roller toward the drive roller.

[0012] Furthermore, a threaded hole is provided on the upper surface of the side plate, and the threaded hole communicates with the slide groove; the clamping component includes a bolt and a spring that are threadedly connected to the threaded hole, the central axes of the bolt, the pressure roller and the drive roller are all coplanar, and the central axis of the bolt intersects perpendicularly with the central axis of the pressure roller, and the spring is pressed against the end face of the bolt and the outer circumferential surface of the pressure roller shaft end.

[0013] Furthermore, the end of the bolt is coaxially fixedly connected to a guide sleeve shaft, a guide hole is opened on the outer circumferential surface of the shaft end of the pressure roller, the guide sleeve shaft is slidably connected to the guide hole, and the spring is sleeved outside the guide sleeve shaft and pressed against the outer circumferential surface of the pressure roller by the bolt.

[0014] Furthermore, an assembly section is provided in the middle of the pressure roller, and a pressure wheel coaxially rotatably connected to the assembly section is assembled on the outside of the assembly section via bearings.

[0015] Furthermore, an auxiliary roller is rotatably connected between the two side plates. The auxiliary roller is driven to rotate by a motor. The active roller and the auxiliary roller together support and drive the white card, and the auxiliary roller is located behind the active roller in the direction of white card transmission.

[0016] This utility model embodiment provides a white cardboard feeding pressure regulating device. It has the following features:

[0017] Beneficial effects:

[0018] This invention utilizes a rotating bolt to push a guide sleeve shaft and spring downwards. The spring is compressed, generating elastic force, which acts on the shaft end of the pressure roller, propelling the entire pressure roller downwards along the groove. The downward movement of the pressure roller causes its pressure roller to press the white cardboard tightly against the drive roller. As the drive roller rotates, it relies on the static friction between itself and the white cardboard to pull it forward. By precisely adjusting the screw depth of the bolt, the compression of the spring can be changed, thus linearly and infinitely adjusting the downward pressure applied to the pressure roller, achieving optimal pressure control for white cardboard of different thicknesses and surface properties. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 for Figure 1 The perspective front view;

[0021] Figure 3 for Figure 1 The perspective right view;

[0022] Figure 4This is a structural schematic diagram of the side panel;

[0023] Figure 5 This is a schematic diagram of the clamping component.

[0024] Figure 6 This is a schematic diagram of the pressure roller.

[0025] In the diagram: 1. Side plate; 11. Slide groove; 12. Threaded hole; 2. Drive roller; 3. Auxiliary roller; 4. Clamping component; 41. Bolt; 42. Guide sleeve shaft; 43. Spring; 5. Pressure roller; 51. Guide hole; 52. Assembly section; 53. Pressure roller. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] like Figures 1 to 6 As shown in this embodiment, a white cardboard feeding pressure regulating device is mainly used in automated equipment such as printing and packaging to provide stable and adjustable pressure feeding of high-grammage, high-stiffness white cardboard, ensuring that the feeding process is free from slippage and jamming.

[0028] The core of the device includes two side plates 1, a drive roller 2, a pressure roller 5, a clamping component 4, and a secondary drive roller 3.

[0029] Two side plates 1 are set parallel to each other through the frame (not shown in the figure), forming a feeding channel for the white card 6 to pass through.

[0030] The two ends of the drive roller 2 are rotatably connected to the two side plates 1 via bearings. One end is connected to the output shaft of the drive motor via a coupling or transmission belt, and is driven by the motor to rotate, providing the core power for the feeding of the white card 6.

[0031] The pressure roller 5 is positioned directly above the drive roller 2. Its core function is to press the white card 6 onto the roller surface of the drive roller 2, thereby increasing the friction by increasing the positive pressure between the two, thus achieving effective traction of the white card.

[0032] The key improvement of this invention lies in the installation and pressure adjustment method of the pressure roller 5. Specifically, a vertical groove 11 is provided on the surface of the side plate 1. The journals at both ends of the pressure roller 5 extend into these two grooves 11 and can slide freely along the vertical direction of the grooves 11. The design of the groove 11 ensures that the central axis of the pressure roller 5 remains parallel to the central axis of the driving roller 2 below and is in the same vertical plane during the up and down movement. This is an important geometric constraint to ensure uniform pressure and smooth feeding without deviation. In addition, the groove 11 ensures that the central axis of the pressure roller 5 is always parallel and coplanar with the central axis of the driving roller 2, ensuring that the clamping force is evenly distributed along the entire length of the roller body, effectively preventing problems such as roller wear and paper deviation caused by uneven pressure.

[0033] The clamping component 4 is the core component that provides and adjusts the downward pressure. A threaded hole 12 is provided on the upper end face of the side plate 1, which communicates downwards with the internal space of the slide groove 11. The clamping component 4 includes a bolt 41 threaded into the threaded hole 12, a guide sleeve 42 coaxially fixed to the end of the bolt 41, and a spring 43 sleeved on the guide sleeve 42. During installation, the central axes of the bolt 41, the pressure roller 5, and the drive roller 2 are designed to be coplanar, and the central axis of the bolt 41 intersects perpendicularly with the central axis of the pressure roller 5.

[0034] A guide hole 51 matching the guide sleeve shaft 42 is provided on the outer circumferential surface of the shaft end of the pressure roller 5. The guide sleeve shaft 42 is inserted into the guide hole 51 and slidably connected to the guide hole 51. One end of the spring 43 abuts against the end of the bolt 41, and the other end is pressed against the outer circumferential surface of the shaft end of the pressure roller 5.

[0035] To further optimize the pressure effect and protect the roller body, an assembly section 52 is provided in the middle of the pressure roller 5. This section is equipped with a freely rotating pressure roller 53 via bearings. The pressure roller 53 is usually made of a wear-resistant material with moderate friction (such as polyurethane), and it directly contacts the white card 6 and applies pressure.

[0036] In addition, an auxiliary roller 3 is rotatably connected between the two side plates 1, which can also be driven by a motor. The auxiliary roller 3 is located behind the active roller 2 along the feeding direction of the white card 6. Its function is to support the white card together with the active roller 2 to form a stable feeding plane and prevent the white card from sagging or getting stuck after leaving the active roller due to its own rigidity.

[0037] Working principle:

[0038] During operation, the drive motor rotates the active roller 2. The operator screws the bolts 41 on both sides inward into the slide groove 11. The bolts 41 push the guide sleeve shaft 42 and the spring 43 downward. The spring 43 is compressed and generates elastic force. This elastic force acts on the shaft end of the pressure roller 5 through its lower end, thereby pushing the entire pressure roller 5 to slide downward along the slide groove 11.

[0039] The pressure roller 5 moves downward, causing the pressure roller 53 on it to press the white cardboard 6 tightly against the drive roller 2. As the drive roller 2 rotates, it pulls the white cardboard 6 forward using the static friction between itself and the roller. By precisely adjusting the screw depth of the bolt 41, the compression of the spring 43 can be changed, thus linearly and infinitely adjusting the downward pressure applied to the pressure roller 5, ultimately achieving optimal clamping force control for white cardboard of different thicknesses and surface properties. Furthermore, the spring 43 effectively absorbs the impact from white cardboard joints or slight thickness variations, providing constant and gentle pressure, avoiding feeding slippage, paper deformation, or jamming that may occur with rigid clamping.

[0040] In addition, the cooperation between the guide sleeve shaft 42 and the guide hole 51 ensures that the elastic force of the spring 43 is always transmitted in the vertical direction, preventing the pressure roller 5 from becoming skewed or stuck in the slide groove 11 due to uneven force. At the same time, this cooperation restricts the radial movement of the pressure roller 5, so that it can only slide along a predetermined trajectory (slide groove direction), ensuring the accuracy and stability of the movement.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A white cardboard feeding pressure regulating device, comprising: Two side plates (1) are arranged in parallel to form a feeding channel for white cardboard; The two sides are rotatably connected to the side plate (1) by bearings and driven by a motor. A pressure roller (5) is disposed above the drive roller (2), the pressure roller (5) being used to press the white card firmly above the drive roller (2); characterized in that, The side plate (1) has a groove (11) on its surface. The shaft end of the pressure roller (5) extends into the groove (11). The shaft end of the pressure roller (5) is slidably connected to the groove (11). When sliding along the length of the groove (11), the central axis of the pressure roller (5) is always parallel and coplanar with the central axis of the drive roller (2). A clamping element (4) is used to apply pressure to the pressure roller (5) toward the drive roller (2).

2. A white card feed pressure regulating device as claimed in claim 1, wherein, The upper surface of the side plate (1) is provided with a threaded hole (12), which is connected to the slide groove (11); the clamping member (4) includes a bolt (41) and a spring (43) that are threadedly connected to the threaded hole (12). The central axes of the bolt (41), the pressure roller (5) and the drive roller (2) are all coplanar, and the central axis of the bolt (41) intersects perpendicularly with the central axis of the pressure roller (5). The spring (43) is pressed against the end face of the bolt (41) and the outer circumferential surface of the shaft end of the pressure roller (5).

3. A white card feed pressure regulating device as claimed in claim 2, wherein, The end of the bolt (41) is coaxially fixedly connected to the guide sleeve shaft (42). The outer circumferential surface of the shaft end of the pressure roller (5) is provided with a guide hole (51). The guide sleeve shaft (42) is slidably connected to the guide hole (51). The spring (43) is sleeved on the outside of the guide sleeve shaft (42) and pressed by the bolt (41) on the outer circumferential surface of the pressure roller (5).

4. A white card feed pressure regulating device as claimed in any one of claims 1 to 3, wherein, The pressure roller (5) has an assembly section (52) in the middle, and a pressure wheel (53) is mounted on the outside of the assembly section (52) through a bearing and rotates coaxially with it.

5. A white card feed pressure regulating device as claimed in claim 4, wherein, A secondary roller (3) is rotatably connected between the two side plates (1). The secondary roller (3) is driven to rotate by a motor. The active roller (2) and the secondary roller (3) together support and drive the white card. The secondary roller (3) is located on the rear side of the white card transmission direction relative to the active roller (2).

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