A paper towel embossing device with adjustable roller spacing

Abstract

The utility model discloses a paper towel embossing device with adjustable roller spacing, which belongs to the technical field of embossing machines. The utility model includes relatively arranged substrates, and a first roller body and a second roller body rotatably arranged on the two substrates, both ends of the first roller body are connected with an adjustment mechanism; the adjustment mechanism is located in a first mounting groove provided on the substrate; it includes a rotating plate hinged on the substrate, and one end of the rotating plate is connected with a driving source; the rotating plate is driven by the driving source, and swings along the hinge point between it and the substrate, so that the first roller body is away from or close to the second roller body. The utility model adopts a swinging structure, which greatly reduces the wear between components compared with the traditional meshing transmission, and is conducive to extending its service life and ensuring the adjustment accuracy. At the same time, the adjustment mechanism is arranged in the first mounting groove on the substrate, which reduces the space occupied by the adjustment mechanism itself.

Description

Technical Field

[0001] The utility model belongs to the technical field of embossing machines, and more specifically relates to a paper towel embossing device with adjustable roller spacing. Background Art

[0002] At present, the types of paper towels can be roughly divided into roll paper, box-shaped paper boxes and tissue paper, etc. In order to meet market consumption demand and increase popularity, paper towels are embossed to achieve this goal.

[0003] The existing paper towel embossing device generally uses two symmetrically arranged embossing rollers for embossing, and the two embossing rollers are usually designed in a fixed manner, which results in a fixed distance between the two embossing rollers. Often, only paper towels of the same specification can be embossed, and its application range has certain limitations. Therefore, it is necessary to design a paper towel embossing device with an adjustable distance between the embossing rollers to solve the above problem.

[0004] In view of the problem that the roller gap cannot be adjusted, a variety of solutions have been proposed in the existing schemes:

[0005] In the patent CN212708698U, the screw is driven to rotate synchronously by the meshing transmission of the gear and the chain, so that the upper embossing roller on the entire side plate rises or falls.

[0006] In the patent CN216507082U, the adjusting disc and the transverse cylinder can be driven to rotate by turning the handle. Since the transverse cylinder links the driving gear and the rack, the height position and the lateral position of the movable pressure roller can be adjusted to a certain extent.

[0007] In the patent CN214821346U, the threaded rod slides in the direction away from or close to each other, thereby controlling the second embossing roller to slide in the vertical direction under the action of the connecting rod, so as to change the distance between the second embossing roller and the first embossing roller.

[0008] In the above patent applications, the function of adjusting the spacing between rollers can be achieved through different structural designs. However, there are also certain defects: first, the meshing transmission parts are prone to wear, which affects the adjustment accuracy and service life; second, the adjustment structure itself occupies a large space, making the entire printing equipment structure larger, which is not conducive to space saving. Utility Model Content

[0009] 1. Problems to be solved

[0010] Aiming at the problem that the components of the roller spacing adjustment mechanism of the existing printing equipment are easy to wear and occupy a large space, the utility model provides a paper towel embossing device with adjustable roller spacing. The adjustment mechanism in the utility model adopts a swing design, which greatly reduces the wear between the components; at the same time, the adjustment mechanism is arranged in the installation groove on the base plate, which reduces the space occupied by the adjustment mechanism itself.

[0011] 2. Technical solution

[0012] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0013] The utility model discloses a paper towel embossing device with adjustable roller spacing, comprising base plates arranged opposite to each other, and a first roller body and a second roller body rotatably arranged on the two base plates, wherein both ends of the first roller body are connected with an adjustment mechanism;

[0014] The adjustment mechanism is located in a first mounting groove provided on the base plate; it comprises a rotating plate hinged on the base plate, and one end of the rotating plate is connected to a driving source;

[0015] The rotating plate is driven by the driving source to swing along the hinge point between the rotating plate and the base plate, so that the first roller body moves away from or close to the second roller body.

[0016] Furthermore, first connecting plates are provided on both sides of the first installation groove, and the rotating plate located in the first installation groove is rotatably arranged between the two first connecting plates through a pin shaft.

[0017] Furthermore, the first mounting groove is in an "L" shape as a whole, the driving source is located in the horizontal section of the first mounting groove, and one end of the driving source is hinged to the base plate, and the other end is hinged to the second connecting plate at the end of the rotating plate;

[0018] The rotating plate is located in the vertical section of the first mounting groove, and the hinge point between the rotating plate and the first connecting plate is located in the vertical section near the bottom.

[0019] Furthermore, first limit blocks are respectively provided on both sides of the rotating plate, and a gap for the side edge of the first installation groove to be inserted is formed between the ends of the two first limit blocks.

[0020] Furthermore, the first limit blocks are provided in two groups and are respectively clamped on the upper and lower sides of the flange on the rotating plate.

[0021] Furthermore, a second limiting block is respectively provided on both sides of the second connecting plate, and the second limiting block is arranged on the base plate through the waist-shaped hole thereon.

[0022] Furthermore, a second mounting groove for the second roller to be inserted into is arranged on one side of the first mounting groove, the second mounting groove is a notch opened at the edge of the substrate, a blocking block is arranged in the second mounting groove, and reinforcing rods are arranged at the four corners of the substrate.

[0023] Furthermore, the driving source is an oil cylinder or a gas cylinder, and the driving source is connected to a gas-liquid booster.

[0024] Furthermore, the second roller body is connected to a driving motor, and the two roller bodies are meshed and driven by a first gear and a second gear;

[0025] Among them, the second gear includes a main gear and a sub-gear arranged coaxially, and the teeth on the main gear and the sub-gear correspond one-to-one to form a total tooth; and the sub-gear and the main gear can be relatively rotated and adjusted so that the total tooth and the corresponding tooth groove on the first gear are meshed without gap.

[0026] Furthermore, the auxiliary gear is rotatably sleeved on the annular boss on the side of the main gear, and the disc surfaces of the main and auxiliary gears are both provided with fastening holes for fasteners to pass through, and at least one fastening hole on the disc surface is a waist-shaped groove.

[0027] Furthermore, the main gear is connected to the first roller body through a tension sleeve, so that the main gear can rotate infinitely relative to the circumference of the first roller body.

[0028] Furthermore, the width of the main gear is greater than the width of the secondary gear.

[0029] 3. Beneficial effects

[0030] Compared with the prior art, the beneficial effects of the utility model are:

[0031] (1) The utility model is a paper towel embossing device with adjustable roller spacing, wherein the end of the first roller body is rotatably arranged on a rotating plate, and the rotating plate is hinged to the base plate. The rotating plate is driven by a driving source and swings along the hinge point with the base plate, so that the first roller body moves away from or close to the second roller body, thereby adjusting the spacing between the two roller bodies. The utility model adopts a swing transmission structure, which greatly reduces the wear between the components compared to the traditional meshing transmission, and is conducive to extending its service life and ensuring the adjustment accuracy. At the same time, the adjustment mechanism is arranged in the first mounting groove on the base plate, which reduces the space occupied by the adjustment mechanism itself.

[0032] (2) The utility model provides a paper towel embossing device with adjustable roller spacing. The first limit block can be set to effectively limit the rotating plate, thereby preventing the roller from moving in the axial direction and ensuring the stability of the roller during operation.

[0033] (3) The utility model provides a paper towel embossing device with adjustable roller spacing. A total tooth is formed by one-to-one correspondence between the teeth on the main gear and the auxiliary gear, so that the total tooth is meshed with the corresponding tooth groove on the first gear without gap, which not only ensures the synchronization of the rotation between the two rollers, but also eliminates the influence of the transmission gap on the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a paper towel embossing device with adjustable roller spacing according to the utility model;

[0035] Figure 2 It is a structural schematic diagram of the substrate in the utility model;

[0036] Figure 3 It is a structural schematic diagram of the adjustment mechanism in the utility model;

[0037] Figure 4 It is a schematic diagram of partial assembly between the adjustment mechanism and the base plate in the utility model;

[0038] Figure 5 It is a schematic diagram of the assembly between the driving mechanism and the roller group in the utility model;

[0039] Figure 6 It is a schematic diagram of the meshing between the first gear and the second gear in the utility model;

[0040] In the figure: 1, base plate; 11, first mounting groove; 12, second mounting groove;

[0041] 2. Roller group; 21. First roller body; 22. Second roller body;

[0042] 3. Adjustment mechanism; 31. Rotating plate; 32. Driving source; 33. First connecting plate; 34. Second connecting plate; 35. First stop block; 36. Second stop block; 37. Gas-liquid booster;

[0043] 4. Driving mechanism; 41. Driving motor; 42. First gear; 43. Second gear; 431. Main gear; 432. Sub gear; 44. Annular boss. DETAILED DESCRIPTION

[0044] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] The utility model is further described below in conjunction with specific embodiments.

[0047] like Figure 1 , Figure 2 As shown, a paper towel embossing device with adjustable roller spacing in this embodiment includes two substrates 1 arranged opposite to each other, and a roller group 2 rotatably arranged on the two substrates 1. The roller group 2 includes a first roller body 21 and a second roller body 22 that cooperate with each other.

[0048] The substrate 1 is provided with a first mounting groove 11 and a second mounting groove 12. The first mounting groove 11 is provided with an adjustment mechanism 3, and the first roller body 21 is connected to the adjustment mechanism 3 and driven by the adjustment mechanism 3 to move away from or approach the second roller body 22, so that the distance between the two roller bodies can be adjusted.

[0049] The second installation groove 12 is a notch opened at the edge of the base plate 1. The end of the second roller body 22 together with the rotating bearing thereon can be inserted into the second installation groove 12 through the notch, and then blocked by the blocking block. At the same time, reinforcing rods (not shown in the figure) are provided at the four corners of the base plate 1. This design makes the assembly operation of the roller body more convenient and quick, while ensuring the connection strength of the base plate 1.

[0050] refer to Figure 3 , Figure 4 As shown, the adjustment mechanism 3 includes a rotating plate 31 and a driving source 32. The two ends of the first roller 21 are respectively rotatably arranged on the corresponding rotating plates 31, one end of the rotating plate 31 is hinged on the base plate 1, and the other end is connected to the driving source 32.

[0051] Driven by the driving source 32 , the rotating plate 31 swings along the hinge point between it and the base plate 1 , so that the first roller body 21 moves away from or close to the second roller body 22 , so as to adjust the roller distance between the two roller bodies.

[0052] The first mounting groove 11 is L-shaped as a whole, and the driving source 32 is located in the horizontal section of the first mounting groove 11, and one end of the driving source 32 is hinged to the base plate 1, and the other end is hinged to the second connecting plate 34 at the end of the rotating plate 31; the rotating plate 31 is located in the vertical section of the first mounting groove 11, and the hinge point between the rotating plate 31 and the first connecting plate 33 is located near the bottom of the vertical section.

[0053] Specifically, on the base plate 1, a group of first connecting plates 33 are symmetrically arranged at the front and rear sides of the first mounting groove 11. The bottom of the rotating plate 31 is inserted between the two first connecting plates 33 and is rotatably connected via a pin.

[0054] A U-shaped block is connected to the bottom of the driving source 32 , and the U-shaped block is clamped on the side wall of the first mounting groove 11 , and the two can be rotatably connected via a pin shaft.

[0055] The front and rear sides of the end of the rotating plate 31 are respectively connected with second connecting plates 34 , a pin is provided between the two second connecting plates 34 , and the output end of the driving source 32 is rotatably connected to the pin through a joint.

[0056] Preferably, the driving source 32 is an oil cylinder or a gas cylinder, and the driving source 32 is connected to a gas-liquid booster 37 .

[0057] Furthermore, first limit blocks 35 are respectively provided on the front and rear sides of the rotating plate 31, and the length of the first limit blocks 35 is greater than the width of the corresponding part of the first mounting groove 11, so as to ensure that the side of the first mounting groove 11 can be inserted into the gap between the corresponding ends of the two first limit blocks 35, so as to effectively limit the rotating plate 31 and effectively prevent the rotating plate 31 and the first roller body 21 thereon from axial movement, thereby ensuring the printing effect.

[0058] Preferably, the first limit block 35 is provided with two groups, and is respectively clamped on the upper and lower sides of the flange on the rotating plate 31. This design ensures that the rotating plate 31 is limited and the flange can be limited at the same time. The flange is used to install and position the bearing in the through hole on the rotating plate 31.

[0059] In addition, a second stopper 36 is provided on each of the left and right sides of the second connecting plate 34, and the second stopper 36 is provided on the base plate 1 through the waist-shaped hole thereon. The two second stoppers 36 are used to stop the two sides of the rotating plate 31, so as to further ensure the stability of the rotating plate 31 and the roller body thereon during operation.

[0060] It is worth noting that in this embodiment, up, down, left and right are Figure 3 The paper direction shall prevail.

[0061] In this embodiment, a paper towel embossing device with adjustable roller spacing is provided. The driving source 32 drives the rotating plate 31 to swing along the pin shaft at the bottom thereof, so that the first roller body 21 moves away from or close to the second roller body 22, thereby adjusting the spacing between the two roller bodies. This embodiment adopts a swinging structure, which greatly reduces the wear between the components compared to the traditional meshing transmission, and is conducive to extending its service life and ensuring the adjustment accuracy. At the same time, the adjustment mechanism 3 is arranged in the first mounting groove 11 on the base plate 1, which reduces the space occupied by the adjustment mechanism 3 itself.

[0062] As another implementation of this embodiment, the paper towel embossing device further includes a driving mechanism 4 for driving the two rollers to rotate synchronously and in opposite directions.

[0063] refer to Figure 1 , Figure 5 As shown, the driving mechanism 4 includes a driving motor 41 , a first gear 42 and a second gear 43 .

[0064] The driving motor 41 is arranged outside the substrate 1 , and the output end of the driving motor 41 is connected to the second roller body 22 , and the two roller bodies are meshed and driven via a first gear 42 and a second gear 43 .

[0065] When the distance between the two rollers increases, the tooth gap between the first gear 42 and the second gear 43 in meshing state will also change. The existence of the tooth gap will make the gears shake easily during the transmission process, thereby making the contact surface between the two rollers unstable and affecting the printing effect.

[0066] To this end, in this embodiment, the structure of the driving mechanism 4 is further optimized to facilitate elimination of the tooth gap between the first gear 42 and the second gear 43 .

[0067] refer to Figure 6 As shown, the second gear 43 includes a main gear 431 and a sub gear 432 which are coaxially arranged, and the teeth on the main gear 431 and the sub gear 432 correspond to each other to form a total tooth; and the sub gear 432 and the main gear 431 can be relatively rotated and adjusted, so that the two sides of the total tooth are respectively in close contact with the two side walls of the corresponding tooth grooves on the first gear 42 to achieve gapless meshing.

[0068] Specifically, the main gear 431 is connected to the first roller body 21 through a tension sleeve, so that the main gear 431 can rotate infinitely relative to the circumference of the first roller body (21).

[0069] The auxiliary gear 432 is rotatably sleeved on the annular boss 44 on the side of the main gear 431. The discs of the two gears are provided with fastening holes for fasteners to pass through, and at least one fastening hole on the disc is a waist-shaped groove to facilitate the misalignment adjustment between the main and auxiliary gears.

[0070] Specifically in this embodiment, five fastening holes are arranged at equal intervals along the respective disk surfaces, and the fastening holes on the secondary gear 432 are waist-shaped grooves. The fasteners are bolts and nuts that fit together.

[0071] In this embodiment, the transmission path of the driving force is, in order, the driving motor 41, the second roller body 22, the first gear 42, the second gear 43, and the first roller body 21. Among them, the first gear 42 and the main gear 431 are driven by meshing therebetween, and the main gear 431 and the sub-gear 432 are driven by the locking force of the fastener.

[0072] That is to say, during the entire transmission process, the teeth of the main gear 431 are stressed, while the teeth of the secondary gear 432 are substantially unstressed. Therefore, in this embodiment, the width of the main gear 431 is greater than the width of the secondary gear 432 to extend the service life of the main gear 431.

[0073] The paper towel embossing device with adjustable roller spacing in this embodiment not only ensures the synchronization of the rotation of the two rollers through the arrangement of the driving mechanism 4, but also eliminates the influence of the transmission gap on the printing quality.

[0074] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A tissue embossing device with adjustable roller spacing, comprising two substrates (1) arranged opposite to each other, and a first roller (21) and a second roller (22) rotatably arranged on the two substrates (1), characterized in that: Both ends of the first roller body (21) are connected to an adjustment mechanism (3); The adjustment mechanism (3) is located in a first installation groove (11) provided on the base plate (1); it comprises a rotating plate (31) hinged on the base plate (1), and one end of the rotating plate (31) is connected to a driving source (32); The rotating plate (31) is driven by a driving source (32) to swing along a hinge point between the rotating plate (31) and the base plate (1), so that the first roller body (21) moves away from or approaches the second roller body (22).

2. The paper towel embossing device with adjustable roller spacing according to claim 1, characterized in that: First connecting plates (33) are provided on both sides of the first installation groove (11), and the rotating plate (31) located in the first installation groove (11) is rotatably arranged between the two first connecting plates (33) via a pin shaft.

3. The paper towel embossing device with adjustable roller spacing according to claim 2, characterized in that: The first installation groove (11) is in an "L" shape as a whole, the driving source (32) is located in the horizontal section of the first installation groove (11), and one end of the driving source (32) is hinged to the base plate (1), and the other end is hinged to the second connecting plate (34) at the end of the rotating plate (31); The rotating plate (31) is located in the vertical section of the first installation groove (11), and the hinge point between the rotating plate (31) and the first connecting plate (33) is located in a position close to the bottom of the vertical section.

4. A paper towel embossing device with adjustable roller spacing according to any one of claims 1 to 3, characterized in that: First limit blocks (35) are respectively provided on both sides of the rotating plate (31), and a gap is formed between the ends of the two first limit blocks (35) for the side edge of the first installation groove (11) to be inserted.

5. The paper towel embossing device with adjustable roller spacing according to claim 4, characterized in that: The first limit blocks (35) are provided in two groups and are respectively clamped on the upper and lower sides of the flange on the rotating plate (31).

6. The paper towel embossing device with adjustable roller spacing according to claim 3, characterized in that: A second limiting block (36) is provided on each side of the second connecting plate (34), and the second limiting block (36) is arranged on the base plate (1) through a waist-shaped hole thereon.

7. The paper towel embossing device with adjustable roller spacing according to claim 1, characterized in that: A second mounting groove (12) for the second roller body (22) to be inserted is provided on one side of the first mounting groove (11); the second mounting groove (12) is a notch opened at the edge of the base plate (1); a blocking block is provided in the second mounting groove (12); and reinforcing rods are provided at the four corners of the base plate (1).

8. The paper towel embossing device with adjustable roller spacing according to claim 7, characterized in that: The driving source (32) is an oil cylinder or a gas cylinder, and the driving source (32) is connected to a gas-liquid booster (37).

9. The paper towel embossing device with adjustable roller spacing according to claim 1, characterized in that: The second roller body (22) is connected to a driving motor (41), and the two roller bodies are meshed and driven via a first gear (42) and a second gear (43); The second gear (43) comprises a main gear (431) and a sub-gear (432) which are coaxially arranged, and the teeth on the main gear (431) and the sub-gear (432) correspond one to one to form a total tooth; and the sub-gear (432) and the main gear (431) can be relatively rotated and adjusted, so that the total tooth is meshed with the corresponding tooth groove on the first gear (42) without gap.

10. The paper towel embossing device with adjustable roller spacing according to claim 9, characterized in that: The auxiliary gear (432) is rotatably sleeved on the annular boss (44) on the side of the main gear (431). The disc surfaces of the main and auxiliary gears are both provided with fastening holes for fasteners to pass through, and at least one fastening hole on the disc surface is a waist-shaped groove.

11. A paper towel embossing device with adjustable roller spacing according to claim 9 or 10, characterized in that: The main gear (431) is connected to the first roller body (21) via a tension sleeve, so that the main gear (431) can perform stepless rotation relative to the circumference of the first roller body (21).

12. The paper towel embossing device with adjustable roller spacing according to claim 11, characterized in that: The width of the main gear (431) is greater than the width of the secondary gear (432).

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