Rotatable fixing device

Abstract

The utility model discloses a rotatable fixing device which comprises a base (1), a clamping jaw (2) is arranged on the base (1), a control piece for controlling the clamping jaw (2) to rotate is arranged on the base (1), side plates (6) are arranged at the bottom of the base (1), the clamping jaw (2) is located between the side plates (6), the control piece comprises a base (7) arranged at the bottoms of the side plates (6), a lead screw (8) is arranged in the base (7), and the lead screw (8) is connected with the base (7). A sliding groove (9) is formed in the clamping jaw (2), a sliding rod (10) is arranged in the sliding groove (9), and the lead screw (8) is in threaded connection with the sliding rod (10). The clamping jaw (2) is driven to be opened or closed by rotating the clamping jaw (2) through the control piece, the purpose of clamping or loosening the roll shaft end head (4) is achieved, the control piece and the clamping jaw (2) are located on the inner side of the base (1), the overall occupied size can be reduced as much as possible, and the position which is inconvenient for personnel to operate and control can be conveniently arranged.

Description

Technical Field

[0001] This utility model belongs to the field of coating machine technology. Specifically, this utility model relates to a rotatable fixing device. Background Technology

[0002] A coating machine is a commonly used device for coating paper and fabric materials. It consists of multiple adjacent rollers that are in contact with each other. The outer rollers transfer the coating to the middle roller, while the middle roller is used to hold the paper or fabric in the middle and coat the paper or fabric with the transferred coating and other materials.

[0003] A patent specification published on March 24, 2023, with patent number 202222845481.9, discloses a coating machine pressure roller fixing structure, belonging to the field of coating machine technology. It includes a lifting support assembly, a fixing assembly, and a pressure roller. In the lifting support assembly, two electric telescopic rods are symmetrically arranged on a support plate. Support rings are fixedly connected to the telescopic ends of the two electric telescopic rods to adjust the vertical distance of the support rings for easy installation of the pressure roller. The fixing assembly includes mounting seats symmetrically arranged on both sides of the support plate. Adjusting screws are rotatably connected within the mounting seats, and each adjusting screw is threadedly connected to a locking block. A pressure roller is locked onto one side of the locking block, with the locking ring gapped against the inner wall of the support ring. The locking block and locking ring in the fixing assembly then clamp the pressure roller tightly inside the support ring. When replacement is needed, the adjusting screws are rotated in the opposite direction to loosen the locking blocks on both sides, allowing the locking ring to be removed from the inner wall of the support ring and the pressure roller to be disassembled. This solves the problems of inconvenient pressure roller disassembly and inconvenient pressure roller fixing.

[0004] In the existing technology, different paper fabrics and coatings have different pressure requirements on the rollers, so it is necessary to adjust the height of different rollers. This requires the installation of a lifting device on the overall machine casing, which reduces the space available for clamping and fixing the rollers. However, the rollers themselves have a large mass and require clamping strength, so the clamping devices are generally too large. Therefore, the installation of the rollers is very inconvenient, especially the installation of the bottom roller, which is very difficult. Utility Model Content

[0005] The present invention aims to provide a rotatable fixing device with a small overall volume and good clamping effect.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rotatable fixing device, including a base, a claw on the base, a control component for controlling the rotation of the claw on the base, the base being gun-shaped, an arc groove inside the base, and a roller end between the claw and the arc groove.

[0007] The chuck is hinged to the base, the base has a central shaft that passes through the chuck, the bottom of the base has side plates, and the chuck is located between the side plates.

[0008] The control component includes a base located at the bottom of the side plate, a lead screw inside the base, a sliding groove inside the side of the pawl located between the side plates, a sliding rod inside the sliding groove, and the lead screw passing through the sliding rod and threadedly connected to the sliding rod.

[0009] Both the base and the pedestal are equipped with bearings that cooperate with the lead screw.

[0010] The bottom end of the lead screw is located on the outside of the base.

[0011] The base has a groove.

[0012] The base has a handwheel and a drive shaft connected to the handwheel at the top. The base has a rotating shaft inside its side. The bottom of the rotating shaft is threaded with a lifting rod. The end of the drive shaft away from the handwheel has a drive gear. The end of the rotating shaft has a bevel gear that meshes with the drive gear.

[0013] The lifting rod is equipped with a sliding key, which is slidably connected to the base.

[0014] The technical advantages of this utility model are as follows: by rotating the chuck by the control component, the chuck opens or closes, thereby achieving the purpose of clamping or releasing the end of the roller shaft. Moreover, the control component and the chuck are located on the inner side of the base, which can minimize the overall volume occupied and facilitate the setting of positions that are inconvenient for personnel to operate and control. Attached Figure Description

[0015] This manual includes the following figures, which illustrate the following:

[0016] Figure 1 This is a schematic diagram of the structure of a rotatable fixing device according to the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the control component of a rotatable fixing device.

[0018] The markings in the diagram are as follows: 1. Base; 2. Claw; 3. Circular groove; 4. Roller end; 5. Central shaft; 6. Side plate; 7. Base; 8. Lead screw; 9. Slide groove; 10. Slide rod; 11. Groove; 12. Handwheel; 13. Drive shaft; 14. Rotating shaft; 15. Lifting rod; 16. Slide key; 17. Drive gear; 18. Bevel gear. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution, and to facilitate its implementation.

[0020] Please see Figure 1-2 A rotatable fixing device includes a base 1, a claw 2 on the base 1, and a control component on the base 1 to control the rotation of the claw 2. The base 1 is gun-shaped and has an arc groove 3 inside. A roller end 4 is provided between the claw 2 and the arc groove 3. By rotating the claw 2 through the control component, the claw 2 is opened or closed, thereby achieving the purpose of clamping or releasing the roller end 4. The control component and the claw 2 are located inside the base 1, which can minimize the overall volume occupied and facilitate the setting of positions that are inconvenient for personnel to operate and control.

[0021] The chuck 2 is hinged to the base 1. The base 1 has a central shaft 5 that passes through the chuck 2. The bottom of the base 1 has a side plate 6. The chuck 2 is located between the side plates 6. The chuck 2 rotates around the central shaft 5. The presence of the side plate 6 can include the internal structure of the chuck 2.

[0022] The control components include a base 7 located at the bottom of the side plate 6, a lead screw 8 inside the base 7, and a sliding groove 9 inside the side of the chuck 2 located between the side plates 6. A sliding rod 10 is located inside the sliding groove 9, and the lead screw 8 passes through the sliding rod 10 and is threadedly connected to the sliding rod 10. Since the lead screw 8 and the sliding rod 10 are threadedly connected, and the two ends of the sliding rod 10 abut against the inner walls of the two side plates 6, it can be ensured that the sliding rod 10 will not be driven to rotate when the lead screw 8 rotates. Thus, when the lead screw 8 is rotated, the sliding rod 10 slides up and down under the action of the lead screw 8. The sliding rod 10 is located in the sliding groove 9. As the sliding rod 10 rises and falls, the sliding rod 10 drives the end of the chuck located between the side plates 6 to rise and fall, thereby realizing the opening and closing of the chuck 2. At the same time, since this method uses the lead screw 8 for transmission and controls the rotation of the chuck 2 through the sliding rod 10, the direction of force is changed, which can increase the clamping firmness and reduce the occurrence of unreliable clamping due to the weight of the roller itself.

[0023] Both the base 7 and the base 1 are equipped with bearings that cooperate with the lead screw 8, so as to facilitate the rotation of the lead screw 8.

[0024] The bottom end of the lead screw 8 is located on the outside of the base 7; the operator can rotate the lead screw 8 directly from the outside.

[0025] The base 7 has a groove 11; which cooperates with the arc groove to better fix the roller end 4, increasing the clamping stability. When the jaw 2 is opened, the presence of the groove 11 allows the roller end 4 to roll off only after the jaw 2 is opened to a certain angle. This facilitates the installation or removal of the roller and prevents the roller end 4 from sliding outward as soon as the jaw 2 is opened. When installing the roller, it can cooperate with the groove 11 to ensure that the roller end 4 will not slip off when the roller is opened to a certain angle. The roller is then lifted by rotating the jaw 2 to complete the clamping.

[0026] The base 1 has a handwheel 12 and a drive shaft 13 connected to the handwheel 12 at the top. The base 1 has a rotating shaft 14 inside the side. The bottom of the rotating shaft 14 is threadedly connected to a lifting rod 15. The end of the drive shaft 13 away from the handwheel 12 is provided with a drive gear 17. The end of the rotating shaft 14 is provided with a bevel gear 18 that meshes with the drive gear 17. By rotating the handwheel 12, the drive shaft 13 and the rotating shaft 14 are driven to rotate, thereby driving the lifting rod 15 threadedly connected to the rotating shaft 14 to rise or fall. The entire structure is raised and lowered to achieve the purpose of raising and lowering the roller shaft.

[0027] The lifting rod 15 is provided with a sliding key 16, which is slidably connected to the base 1; this prevents the lifting rod 15 from being driven to rotate when the rotating shaft 14 rotates, thus achieving the lifting effect of the lifting rod 15.

[0028] The technical effect of this utility model is that by rotating the chuck 2 through the control component, the chuck 2 is opened or closed, thereby achieving the purpose of clamping or releasing the roller end 4. Moreover, the control component and the chuck 2 are located inside the base 1, which can minimize the overall volume occupied and facilitate the setting of positions that are inconvenient for personnel to operate and control.

[0029] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A rotatable fixing device, characterized in that: Includes a base (1), on which a claw (2) is provided, and on which a control component for controlling the rotation of the claw (2) is provided, the base (1) is gun-shaped, and an arc groove (3) is provided inside the base (1), and a roller end (4) is provided between the claw (2) and the arc groove (3).

2. The rotatable fixing device according to claim 1, characterized in that: The claw (2) is hinged to the base (1), and the base (1) has a central shaft (5) that passes through the claw (2). The bottom of the base (1) has a side plate (6), and the claw (2) is located between the side plates (6).

3. The rotatable fixing device according to claim 2, characterized in that: The control component includes a base (7) located at the bottom of the side plate (6), a lead screw (8) is provided in the base (7), a groove (9) is provided in the side of the claw (2) located between the side plates (6), a slide rod (10) is provided in the groove (9), and the lead screw (8) passes through the slide rod (10) and is threadedly connected to the slide rod (10).

4. The rotatable fixing device according to claim 3, characterized in that: Both the base (7) and the base (1) are equipped with bearings that cooperate with the lead screw (8).

5. A rotatable fixing device according to claim 3 or 4, characterized in that: The bottom end of the lead screw (8) is located outside the base (7).

6. The rotatable fixing device according to claim 3, characterized in that: The base (7) is provided with a groove (11).

7. The rotatable fixing device according to claim 1, characterized in that: The base (1) has a handwheel (12) and a drive shaft (13) connected to the handwheel (12) at its top. The base (1) has a rotating shaft (14) inside its side. The bottom of the rotating shaft (14) is threaded with a lifting rod (15). The end of the drive shaft (13) away from the handwheel (12) is provided with a drive gear (17). The end of the rotating shaft (14) is provided with a bevel gear (18) that meshes with the drive gear (17).

8. A rotatable fixing device according to claim 7, characterized in that: The lifting rod (15) is provided with a sliding key (16), which is slidably connected to the base (1).

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