Traction mechanism suitable for different thicknesses

Abstract

The utility model discloses a traction mechanism suitable for different thicknesses, which relates to the field of coating machine equipment and comprises a rack and a conveying roller. The machine frame comprises two side plates, the conveying roller is installed between the two side plates in a running fit mode, a U-shaped sliding groove is formed in the middle of the upper end of each side plate, a lifting roller frame is installed in each U-shaped sliding groove in a clearance fit mode, and a pressing roller is installed between the lifting roller frames of the two side plates in a running fit mode. A driving mechanism is fixedly installed on the outer side of one side plate and drives the conveying rollers to rotate, and the pressing rollers are pressed on the conveying rollers to conduct driven rotation. A lifting block is fixedly mounted on the outer side of the lifting roller frame, a lifting motor is fixedly mounted at the top end of the side plate, a screw is fixedly mounted at a rotor of the lifting motor, and the screw drives the lifting block to ascend and descend; the pressing roller is controlled to ascend and descend in a screw and sliding block mode, the distance between the pressing roller and the conveying roller cannot be changed when external force is pressed on the pressing roller, then stable adjustment is achieved, and the device is suitable for conveying materials with different thicknesses.

Description

Technical Field

[0001] This utility model relates to the field of coating machine equipment, and in particular to a traction mechanism suitable for different thicknesses. Background Technology

[0002] A coating machine is an automated mechanical device specifically designed to control and apply fluids to the surface of a product. It is primarily used in product manufacturing processes to precisely spray, coat, or drip conformal coatings, UV adhesives, and other liquids onto specific locations on each product, enabling the application of lines, circles, or arcs.

[0003] A prior art (publication number: CN215612755U, publication date: 2022.01.25) discloses a coating roller for paper bag production with adjustable coating amount. It has arc-shaped grooves on both sides of the mounting base, and arc-shaped cylinders are installed in the arc-shaped grooves to move the rotating rod. The extension and retraction of the arc-shaped cylinders can control the distance between the printing roller and the coating roller, thereby achieving coating on paper bags of different thicknesses, or coating paper bags with different thicknesses. However, in this solution, the arc-shaped cylinders need to be customized according to the arc-shaped grooves, and adjusting the gap solely with arc-shaped cylinders has the drawback of low adjustment accuracy. Furthermore, it is prone to spacing deviation when subjected to external force, resulting in poor coating effect. Therefore, it is necessary to design a traction mechanism suitable for different thicknesses for existing coating machines to solve this technical problem. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0005] A traction mechanism suitable for different thicknesses, comprising a frame and conveyor rollers;

[0006] The frame includes two side plates, a conveying roller is rotatably mounted between the two side plates, a U-shaped groove is formed in the middle of the upper part of the side plate, a lifting roller frame is installed in the U-shaped groove with clearance, and a pressure roller is rotatably mounted between the lifting roller frames of the two side plates.

[0007] A drive mechanism is fixedly installed on the outer side of one of the side plates. The drive mechanism drives the conveyor roller to rotate, and the pressure roller presses on the conveyor roller to rotate passively.

[0008] A lifting block is fixedly installed on the outer side of the lifting roller frame, a lifting motor is fixedly installed on the top of the side plate, a screw is fixedly installed on the rotor of the lifting motor, a threaded hole is formed in the middle of the lifting block, and the screw is screwed into the threaded hole.

[0009] Furthermore: two vertical guide rails are fixedly installed on the outer side of the side plate, and sliders are slidably installed on the vertical guide rails. The two ends of the lifting block are respectively fixedly installed on the sliders of the two vertical guide rails.

[0010] Furthermore, a shielding cover is fixedly installed on the outer side of the side plate, and the shielding cover covers the outer side of the vertical guide rail, slider, lifting block and screw.

[0011] Furthermore: a support edge is fixedly installed at the top of the side plate, the support edge forming an open-closed structure at the top of the U-shaped slide, and a motor plate is fixedly installed in the middle of the upper side of the support edge, and the lifting motor is fixedly installed on the motor plate.

[0012] Furthermore, the bottom side of the motor plate is fixedly mounted on the shielding cover.

[0013] Furthermore, the frame also includes several connecting shafts, which are fixedly installed between two side plates, and the connecting shafts, conveying rollers and pressure rollers are staggered from each other.

[0014] Furthermore: the drive mechanism includes a motor bracket, a reducer, a coupling, and a drive motor. The reducer has an input shaft and an output shaft on its side. The coupling is fixedly installed between the conveyor roller and the output shaft of the reducer. The rotor of the drive motor is fixedly installed at the input shaft of the reducer. The motor bracket is fixedly installed on the outside of one of the side plates. The reducer is fixedly installed on the motor bracket. The drive motor drives the conveyor roller to rotate through the reducer and the coupling.

[0015] Furthermore: a photoelectric sensor is fixedly installed on the upper end of the inner side of the side plate, a positioning edge is fixedly installed on the inner side of the lifting roller frame, and a U-shaped sensing part is formed on the photoelectric sensor. When the lifting roller frame rises to the limit position, the outer edge of the positioning edge is inserted into the U-shaped sensing part of the photoelectric sensor with a gap fit.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The lifting blocks are moved up and down by using lifting motors at both ends via screws. The lifting blocks are driven by a screw and slider mechanism. When external force is applied to the pressure rollers, the spacing will not change.

[0018] 2. It can ensure precise and stable lifting and lowering movement of the pressure roller, and the gap between the pressure roller and the conveyor roller can be precisely controlled by CNC.

[0019] 3. When conveying materials such as paper, film, and aluminum foil, the materials are pressed between the conveying roller and the pressure roller. By using CNC to keep the pressure roller pressing the material, the effect of driven rotation can be achieved, eliminating the need for additional drive equipment. This can achieve a stable conveying effect for materials of different thicknesses.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 yes Figure 1 A structural diagram from another perspective;

[0024] Figure 3 yes Figure 2 A schematic diagram of the structure when the shielding cover is hidden.

[0025] The following components are shown in the diagram: 1. Frame; 1.1. Side plate; 1.2. Connecting shaft; 2. Conveyor roller; 3. U-shaped chute; 4. Lifting roller frame; 5. Pressure roller; 6. Drive mechanism; 6.1. Motor bracket; 6.2. Reducer; 6.3. Coupling; 6.4. Drive motor; 7. Lifting block; 8. Lifting motor; 9. Screw; 10. Threaded hole; 11. Vertical guide rail; 12. Slider; 13. Shielding cover; 14. Support side; 15. Motor plate; 16. Photoelectric sensor; 17. Positioning side. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0027] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0028] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figure 1-3 As shown, a traction mechanism of the present invention, applicable to different thicknesses, includes a frame 1 and a conveying roller 2;

[0032] The frame 1 includes two side plates 1.1. A conveying roller 2 is rotatably installed between the two side plates 1.1. A U-shaped groove 3 is formed in the middle of the upper end of the side plate 1.1. A lifting roller frame 4 is installed in the U-shaped groove 3 with clearance. A pressure roller 5 is rotatably installed between the lifting roller frames 4 of the two side plates 1.1.

[0033] A drive mechanism 6 is fixedly installed on the outer side of one of the side plates 1.1. The drive mechanism 6 drives the conveyor roller 2 to rotate, and the pressure roller 5 presses on the conveyor roller 2 to rotate passively.

[0034] A lifting block 7 is fixedly installed on the outer side of the lifting roller frame 4, a lifting motor 8 is fixedly installed on the top of the side plate 1.1, a screw 9 is fixedly installed on the rotor of the lifting motor 8, a threaded hole 10 is formed in the middle of the lifting block 7, and the screw 9 is screwed into the threaded hole 10.

[0035] The principle is as follows: the lifting motors 8 at both ends drive the lifting block 7 to move up and down through the screws 9. The drive is achieved by a lead screw and slider. When external force is applied to the pressure roller 5, the gap will not change. At the same time, it can ensure the precise and stable lifting and lowering of the pressure roller 5. The gap between the pressure roller 5 and the conveying roller 2 can be precisely controlled by CNC. When conveying materials such as paper, film, and aluminum foil, the material will be pressed between the conveying roller 2 and the pressure roller 5. By using CNC, the pressure roller 5 can always press the material, which can achieve the effect of driven rotation. There is no need to equip it with additional drive equipment, so as to achieve the effect of stable conveying of materials of different thicknesses.

[0036] Furthermore: Two vertical guide rails 11 are fixedly installed on the outer side of the side plate 1.1, and sliders 12 are slidably installed on the vertical guide rails 11. The two ends of the lifting block 7 are respectively fixedly installed on the sliders 12 of the two vertical guide rails 11. The arrangement of the vertical guide rails 11 and sliders 12 is used to ensure the stable lifting of the lifting block 7, thereby ensuring the precise adjustment of the gap between the pressure roller 5 and the conveying roller 2.

[0037] Furthermore, a shielding cover 13 is fixedly installed on the outer side of the side plate 1.1. The shielding cover 13 covers the outer side of the vertical guide rail 11, slider 12, lifting block 7 and screw 9; it can play a protective role against dust and impact, and prevent foreign objects from getting stuck in the screw 9, which would prevent normal lifting and lowering.

[0038] Furthermore: A support edge 14 is fixedly installed at the top of the side plate 1.1. The support edge 14 makes the top of the U-shaped slide 3 form an open and closed structure. A motor plate 15 is fixedly installed in the middle of the upper side of the support edge 14, and the lifting motor 8 is fixedly installed on the motor plate 15. The open and closed structure has higher strength and can ensure the stable installation of the lifting motor 8.

[0039] Furthermore, the bottom side of the motor plate 15 is fixedly mounted on the shielding cover 13, which ensures the stable installation of the motor plate 15.

[0040] Furthermore, the frame 1 also includes several connecting shafts 1.2, which are fixedly installed between the two side plates 1.1. The connecting shafts 1.2, the conveying rollers 2 and the pressure rollers 5 are staggered with each other, which can ensure the stable installation between the two side plates 1.1 and improve the reliability of the frame 1.

[0041] Furthermore, the drive mechanism 6 includes a motor bracket 6.1, a reducer 6.2, a coupling 6.3, and a drive motor 6.4. The reducer 6.2 has an input shaft and an output shaft on its side. The coupling 6.3 is fixedly installed between the conveyor roller 2 and the output shaft of the reducer 6.2. The rotor of the drive motor 6.4 is fixedly installed at the input shaft of the reducer 6.2. The motor bracket 6.1 is fixedly installed on the outside of one of the side plates 1.1. The reducer 6.2 is fixedly installed on the motor bracket 6.1. The drive motor 6.4 drives the conveyor roller 2 to rotate through the reducer 6.2 and the coupling 6.3. The conveyor roller 2 can be driven to rotate through a speed reduction transmission, thereby ensuring the stability and accuracy of its rotation.

[0042] Furthermore: A photoelectric sensor 16 is fixedly installed on the upper end of the inner side of the side plate 1.1, and a positioning edge 17 is fixedly installed on the inner side of the lifting roller frame 4. A U-shaped sensing part is formed on the photoelectric sensor 16. When the lifting roller frame 4 rises to the limit position, the outer edge of the positioning edge 17 is inserted into the U-shaped sensing part of the photoelectric sensor 16 with a gap fit. The photoelectric sensing method can be used to determine whether the pressure roller 5 has moved to the limit position. When it moves to the limit position, the lifting motor 8 can be automatically stopped, or the lifting motor 8 can drive the pressure roller 5 to descend, thereby effectively avoiding damage to the equipment.

[0043] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A traction mechanism suitable for different thicknesses, comprising a frame and conveying rollers; characterized in that: The frame includes two side plates, a conveying roller is rotatably mounted between the two side plates, a U-shaped groove is formed in the middle of the upper part of the side plate, a lifting roller frame is installed in the U-shaped groove with clearance, and a pressure roller is rotatably mounted between the lifting roller frames of the two side plates. A drive mechanism is fixedly installed on the outer side of one of the side plates. The drive mechanism drives the conveyor roller to rotate, and the pressure roller presses on the conveyor roller to rotate passively. A lifting block is fixedly installed on the outer side of the lifting roller frame, a lifting motor is fixedly installed on the top of the side plate, a screw is fixedly installed on the rotor of the lifting motor, a threaded hole is formed in the middle of the lifting block, and the screw is screwed into the threaded hole.

2. The traction mechanism suitable for different thicknesses according to claim 1, characterized in that: Two vertical guide rails are fixedly installed on the outer side of the side plate, and sliders are slidably installed on the vertical guide rails. The two ends of the lifting block are respectively fixedly installed on the sliders of the two vertical guide rails.

3. A traction mechanism suitable for different thicknesses according to claim 2, characterized in that: A shielding cover is fixedly installed on the outer side of the side plate, and the shielding cover covers the outer side of the vertical guide rail, slider, lifting block and screw.

4. A traction mechanism suitable for different thicknesses according to any one of claims 1 or 3, characterized in that: A support edge is fixedly installed at the top of the side plate, which allows the top of the U-shaped slide to form an open-closed structure. A motor plate is fixedly installed in the middle of the upper side of the support edge, and the lifting motor is fixedly installed on the motor plate.

5. A traction mechanism suitable for different thicknesses according to claim 4, characterized in that: The bottom side of the motor plate is fixedly mounted on the shielding cover.

6. A traction mechanism suitable for different thicknesses according to claim 1, characterized in that: The frame also includes several connecting shafts, which are fixedly installed between two side plates. The connecting shafts, conveying rollers, and pressure rollers are staggered from each other.

7. A traction mechanism suitable for different thicknesses according to claim 1, characterized in that: The drive mechanism includes a motor bracket, a reducer, a coupling, and a drive motor. The reducer has an input shaft and an output shaft on its side. The coupling is fixedly installed between the conveyor roller and the output shaft of the reducer. The rotor of the drive motor is fixedly installed at the input shaft of the reducer. The motor bracket is fixedly installed on the outside of one of the side plates. The reducer is fixedly installed on the motor bracket. The drive motor drives the conveyor roller to rotate through the reducer and the coupling.

8. A traction mechanism suitable for different thicknesses according to claim 1, characterized in that: A photoelectric sensor is fixedly installed on the upper end of the inner side of the side plate, and a positioning edge is fixedly installed on the inner side of the lifting roller frame. A U-shaped sensing part is formed on the photoelectric sensor. When the lifting roller frame rises to the limit position, the outer edge of the positioning edge is inserted into the U-shaped sensing part of the photoelectric sensor with a gap fit.

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