Carrier roller tensioner for papermaking

Abstract

The utility model discloses a carrier roller tensioner for papermaking, which relates to the field of tensioners and comprises two end plates, a plurality of carrier rollers for conveying paper are rotatably mounted between the two end plates, two ends of the plurality of carrier rollers penetrate to the outside of the end plates and are connected with transmission wheels, and the transmission wheels are connected with the two ends of the carrier rollers. The multiple transmission wheels are in synchronous transmission connection through a transmission belt, a tensioning mechanism for tensioning the transmission belt is installed on the end plate, and the tensioning mechanism comprises a manual pressing unit and an automatic compensation unit. The automatic compensation unit is connected to the interior of the manual pressing unit in a sliding mode and penetrates to the position below the manual pressing unit. By arranging the manual pressing unit, a spring in the automatic compensation unit can be compressed, so that the tensioning mechanism can always keep the function of pressing the synchronous belt, and the problem that the pressing effect is gradually reduced is solved.

Description

Technical Field

[0001] The utility model relates to the field of tensioners, in particular to a roller tensioner for papermaking. Background Art

[0002] A papermaking roller tensioner is a mechanical device used to secure and adjust the drive belt (which may be a roller or other transmission element in papermaking machinery). Its primary function is to ensure sufficient belt tension for stable and efficient power transmission, thereby maintaining the normal operation of the papermaking equipment. In existing tensioners, the compression force is achieved by applying a spring-loaded return force to the tensioner pulley to tighten the timing belt. However, as the belt softens, the spring's elastic potential energy diminishes as it returns to its original position, causing the spring's downward pressure to gradually decrease. As the timing belt softens, the downward pressure also becomes insufficient. This long-term trend leads to insufficient tension, ultimately affecting the smooth operation of the rollers in the papermaking equipment. Utility Model Content

[0003] The purpose of the present utility model is to provide a roller tensioner for papermaking in order to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a roller tensioner for papermaking, comprising an end plate, a plurality of rollers for conveying paper are rotatably installed between the two end plates, both ends of the plurality of rollers extend to the outside of the end plate, and both ends of the rollers are connected to transmission wheels, and the plurality of transmission wheels are synchronously connected through a transmission belt, a tensioning mechanism for tensioning the transmission belt is installed on the end plate, and the tensioning mechanism comprises a manual pressing unit and an automatic compensation unit; the automatic compensation unit is slidably connected to the inside of the manual pressing unit and extends to the bottom of the manual pressing unit; a limiting roller for limiting the transmission belt is rotatably installed on one end of the outer side of the end plate.

[0005] As a further solution of the present invention: the top end of the end plate is fixedly connected to a mounting seat with an L-shaped structure, and the horizontal plate portion of the mounting seat is connected to the manual pressing unit.

[0006] As a further solution of the present invention: the manual pressing unit includes a stud threadedly connected to the horizontal plate portion of the mounting seat, a turntable is fixedly connected to the top center of the stud, and a rotating handle is fixedly connected to the top eccentric position of the turntable.

[0007] As a further solution of the present invention: the automatic compensation unit includes a receiving groove opened inside the stud and penetrating to the bottom of the stud, an anti-slip plate is slidably connected in the square groove of the receiving groove, and a lifting slide is fixedly connected to the top of the anti-slip plate. The lifting slide passes through the circular groove of the receiving groove and extends to the bottom of the stud, and a spring is fixedly connected between the top of the inner wall of the receiving groove and the top of the anti-slip plate.

[0008] As a further solution of the present invention: the tensioning mechanism also includes a rotating seat fixedly connected to the bottom end of the lifting slide, and a tensioning wheel is rotatably installed on the inner side of the rotating seat, and the outer periphery of the tensioning wheel is in contact with the surface of the transmission belt.

[0009] As a further solution of the present invention: a limiting groove is vertically opened on the outer side of the end plate, the inner wall of the limiting groove is slidably connected to the limiting slider, one end of the limiting slider is fixedly connected to the outer side of the rotating seat, and the cross-section of the limiting slider and the limiting groove presents a "convex" structure.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] By setting up a manual pressing unit, the spring in the automatic compensation unit can be compressed, so that the tensioning mechanism can always maintain the compression function of the synchronous belt, and the problem of gradual decrease in the compression effect will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 For the utility model Figure 1 A partial enlarged view of the middle part;

[0014] Figure 3 This is a schematic diagram of the sliding installation of the automatic compensation unit of the present invention.

[0015] In the figure: 1. End plate; 2. Support roller; 3. Drive wheel; 4. Drive belt; 5. Limit roller; 6. Mounting seat; 7. Stud; 8. Turntable; 9. Rotating handle; 10. Lifting slide; 11. Rotating seat; 12. Tensioning pulley; 13. Limiting slider; 14. Limiting slide groove; 15. Receiving groove; 16. Spring; 17. Anti-slip plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figures 1 to 3 In an embodiment of the utility model, a roller tensioner for papermaking includes an end plate 1, and a plurality of rollers 2 for conveying paper are rotatably installed between the two end plates 1. Both ends of the plurality of rollers 2 pass through the outside of the end plate 1, and both ends of the rollers 2 are connected with a transmission wheel 3. The plurality of transmission wheels 3 are synchronously transmitted and connected through a transmission belt 4. A tensioning mechanism for tensioning the transmission belt 4 is installed on the end plate 1, and the tensioning mechanism includes a manual pressing unit and an automatic compensation unit; the automatic compensation unit is slidably connected to the inside of the manual pressing unit and passes through the bottom of the manual pressing unit; a limiting roller 5 for limiting the transmission belt 4 is rotatably installed at one end of the outer side of the end plate 1.

[0018] In this embodiment, first, a driving motor is installed with a transmission wheel 3. When conveying paper, the driving motor is started, and the driving motor drives the transmission wheel 3 connected thereto to rotate. The transmission wheel 3 drives the other multiple transmission wheels 3 to rotate synchronously through the transmission belt 4. The rotating transmission wheel 3 drives the rollers 2 connected thereto to rotate. The multiple rollers 2 rotate synchronously, at the same speed, and in the same direction, thereby conveying paper.

[0019] During the conveying process, the limiting roller 5 limits the transmission belt 4 so that the wrap angle between the transmission belt 4 and the transmission wheel 3 meets the requirement of being greater than 120 degrees;

[0020] During the long-term use of the transmission belt 4, the transmission belt 4 softens and is prone to slipping. When the softening is not serious, the automatic compensation unit automatically presses down the transmission belt 4 to ensure that the transmission belt 4 is in an effectively tensioned state. When the softening of the transmission belt 4 is serious, the automatic compensation unit is not sufficient to tighten the transmission belt 4. At this time, the manual pressing unit is manually rotated, and the downward moving manual pressing unit is used to effectively tighten the transmission belt 4.

[0021] Please refer to Figure 1 and Figure 2 The top end of the end plate 1 is fixedly connected to a mounting base 6 with an L-shaped structure, and the horizontal plate portion of the mounting base 6 is connected to the manual pressing unit.

[0022] In this embodiment, the mounting seat 6 is used to provide rotational support for the manual pressing unit, thereby enabling normal use of the manual pressing unit.

[0023] Please refer to Figure 2 and 3 The tensioning mechanism also includes a rotating seat 11 fixedly connected to the bottom end of the lifting slide 10, and a tensioning wheel 12 is rotatably installed on the inner side of the rotating seat 11, and the outer periphery of the tensioning wheel 12 contacts the surface of the transmission belt 4.

[0024] In this embodiment, the tensioning wheel 12 provides sufficient downward pressure on the transmission belt 4, so that when the transmission belt 4 softens, the tensioning wheel 12 applying downward pressure can compress the softened and loose transmission belt 4.

[0025] Please refer to Figure 2 and Figure 3 The manual pressing unit includes a stud 7 threadedly connected to the horizontal plate portion of the mounting base 6, a turntable 8 is fixedly connected to the top center of the stud 7, and a rotating handle 9 is fixedly connected to the top eccentric position of the turntable 8.

[0026] In this embodiment: when using the manual pressing unit, by holding the rotating handle 9, the rotating handle 9 drives the turntable 8 to rotate, and the rotating turntable 8 simultaneously drives the stud 7 to rotate downward. The downward moving stud 7 can accumulate elastic potential energy for the automatic compensation unit, or directly drive the automatic compensation unit to move downward, thereby achieving effective compression of the transmission belt 4.

[0027] Please refer to Figure 2 and Figure 3 The automatic compensation unit includes a receiving groove 15 opened inside the stud 7 and extending to the bottom of the stud 7. An anti-slip plate 17 is slidably connected in the square groove of the receiving groove 15. The top of the anti-slip plate 17 is fixedly connected to the lifting slide 10. The lifting slide 10 extends through the circular groove of the receiving groove 15 and extends to the bottom of the stud 7. A spring 16 is fixedly connected between the top of the inner wall of the receiving groove 15 and the top of the anti-slip plate 17.

[0028] In this embodiment: when the transmission belt 4 is slightly softened, the spring 16 is reset, and the spring 16 pushes the anti-slip plate 17 to move downward along the inner wall of the accommodating groove 15. The downward moving anti-slip plate 17 drives the lifting slide column 10 to move downward, thereby driving the tensioning wheel 12 to tighten the transmission belt 4.

[0029] Please refer to Figure 2 A limiting groove 14 is vertically opened on the outer side of the end plate 1, and the inner wall of the limiting groove 14 is slidably connected to the limiting slider 13. One end of the limiting slider 13 is fixedly connected to the outer side of the rotating seat 11, and the cross-section of the limiting slider 13 and the limiting groove 14 is a "convex" structure.

[0030] In this embodiment: during the rotation of the stud 7, the limiting slider 13 slides up and down along the inner wall of the limiting slot 14, thereby preventing the tensioning wheel 12 from rotating along with the rotation of the stud 7, and realizing that the tensioning wheel 12 only moves up and down, thereby achieving a moving and clamping effect.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A roller tensioner for papermaking, comprising an end plate (1), a plurality of rollers (2) for conveying paper being rotatably mounted between two end plates (1), characterized in that: Both ends of the plurality of rollers (2) extend through the outside of the end plate (1), and both ends of the rollers (2) are connected to transmission wheels (3), and the plurality of transmission wheels (3) are synchronously connected through a transmission belt (4). A tensioning mechanism for tensioning the transmission belt (4) is installed on the end plate (1), and the tensioning mechanism includes a manual pressing unit and an automatic compensation unit; the automatic compensation unit is slidably connected to the inside of the manual pressing unit and extends to the bottom of the manual pressing unit; a limiting roller (5) for limiting the transmission belt (4) is rotatably installed on one end of the outer side of the end plate (1).

2. A papermaking roller tensioner according to claim 1, characterized in that: The top end of the end plate (1) is fixedly connected to a mounting seat (6) having an L-shaped structure, and the horizontal plate portion of the mounting seat (6) is connected to a manual pressing unit.

3. The papermaking roller tensioner according to claim 2, characterized in that: The manual pressing unit comprises a stud (7) threadedly connected to the horizontal plate portion of the mounting seat (6), a turntable (8) fixedly connected at the top center of the stud (7), and a rotating handle (9) fixedly connected at the top eccentric position of the turntable (8).

4. A papermaking roller tensioner according to claim 3, characterized in that: The automatic compensation unit includes a receiving groove (15) opened inside the stud (7) and extending to the bottom of the stud (7), a slip-off prevention plate (17) is slidably connected in the square groove of the receiving groove (15), a lifting slide (10) is fixedly connected to the top of the anti-slip plate (17), the lifting slide (10) extends through the circular groove of the receiving groove (15) and extends to the bottom of the stud (7), and a spring (16) is fixedly connected between the top of the inner wall of the receiving groove (15) and the top of the anti-slip plate (17).

5. The papermaking roller tensioner according to claim 4, characterized in that: The tensioning mechanism further comprises a rotating seat (11) fixedly connected to the bottom end of the lifting slide (10), a tensioning wheel (12) being rotatably mounted on the inner side of the rotating seat (11), and an outer periphery of the tensioning wheel (12) is in contact with the surface of the transmission belt (4).

6. The papermaking roller tensioner according to claim 5, characterized in that: A limiting sliding groove (14) is vertically provided on the outer side of the end plate (1), and the inner wall of the limiting sliding groove (14) is slidably connected to the limiting slider (13). One end of the limiting slider (13) is fixedly connected to the outer side of the rotating seat (11), and the cross-section of the limiting slider (13) and the limiting sliding groove (14) presents a "convex" structure.

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