Main machine pressure roller

Abstract

The utility model relates to a host pressure roller, including roller body and mounting bearing, said roller body both ends are coaxially equipped with the shaft head, the mounting bearing is equipped with the mounting hole that inserts and matches with the shaft head, its characterized in that: the shaft head has the taper, the shaft head can be closely inserts and matches with the mounting hole, the shaft head has the taper, is convenient to dismantle and install.

Description

Technical Field

[0001] The utility model relates to the field of film laminating machine accessories, in particular to a main machine pressure roller. Background Art

[0002] The shaft head a of the existing laminating machine pressure roller, such as Figure 6 , Figure 7 As shown, it is cylindrical and is tightly plugged into the mounting hole b which is also cylindrical and is provided on the bearing. The circumferential side of the shaft head a and the inner wall of the mounting hole b are tightly fitted to generate friction, thereby plugging and fixing the shaft head a and the mounting hole b. When installing or disassembling the shaft head a, in the process of the shaft head a entering or exiting the mounting hole b, the part of the circumferential side of the shaft head a placed in the mounting hole b is always tightly fitted with the inner wall of the mounting hole b to generate friction, which hinders the entry or exit of the shaft head a and makes it inconvenient to disassemble the shaft head a. Summary of the invention

[0003] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art.

[0004] A host pressure roller is provided, the shaft head of which is provided with a taper for easy disassembly and assembly.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a main machine pressure roller, including a roller body and a mounting bearing, wherein shaft heads are coaxially arranged at both ends of the roller body, and the mounting bearing is provided with a mounting hole that is plugged in with the shaft head, and the characteristic is that the shaft head is provided with a taper, and the shaft head and the mounting hole can be tightly plugged in.

[0006] The utility model is further configured as follows: the shaft head includes an upper end face and a lower end face, the diameter of the upper end face is smaller than the diameter of the lower end face, the upper end face and the lower end face are coaxially arranged, the lower end face is fixedly connected to the roller body, the diameter of the upper end face is R1, the diameter of the lower end face is R2, the shaft head height is L, the taper ratio of the shaft head is (R2-R1) / L, and the taper ratio of the shaft head is 1 / 12 < (R2-R1) / L < 7 / 12.

[0007] A further configuration of the utility model is that the taper ratio of the shaft head is 1 / 12.

[0008] The utility model with the above characteristics: the shaft head is provided with a taper, and the diameter of the upper end face is smaller than the diameter of the lower end face, that is, the diameter of the shaft head gradually decreases from the end connected to the roller body to the end of the shaft head away from the roller body, and the mounting hole and the shaft head can be tightly plugged together, that is, the mounting hole is provided with the same taper as the shaft head. During installation, when the shaft head begins to enter the mounting hole, there is a gap between the circumferential side of the shaft head and the side wall of the mounting hole. In the process of the shaft head penetrating into the mounting hole, the gap gradually decreases until the circumferential side of the shaft head is tightly matched with the inner wall of the mounting hole. The friction force generated by the tight fit is used to realize the installation and fixation of the shaft head. In the process of gradually reducing the above-mentioned gap, there is no contact and friction between the circumferential side surface of the shaft head and the mounting hole, thereby avoiding resistance to the shaft head entering the mounting hole, facilitating the entry of the shaft head, and making installation convenient and labor-saving. When disassembling and assembling, after holding or using a clamp to fix the bearing, use a tool to knock on the upper end surface of the shaft head, and the circumferential side surface of the shaft head and the inner wall of the mounting hole exit the tight fit state, and a gap is generated between the circumferential side surface of the shaft head and the inner wall of the mounting hole. In the process of the shaft head exiting the mounting hole, there is no contact and friction between the circumferential side surface of the shaft head and the inner wall of the mounting hole, thereby avoiding resistance to the shaft head exiting the mounting hole, and making disassembly and assembly convenient and labor-saving.

[0009] A further configuration of the utility model is that the shaft head and the roller body are coaxially formed in one piece.

[0010] The utility model with the above characteristics: the integral molding ensures the reliability of the connection between the shaft head and the roller body.

[0011] A further configuration of the utility model is that the circumferential side surface of the roller body is wrapped with rubber.

[0012] The utility model with the above characteristics is wrapped with rubber, which can increase friction and prevent damage to materials.

[0013] The utility model has the beneficial effect that the shaft head is provided with a taper, which is convenient for disassembly and assembly.

[0014] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional schematic diagram of a state in which the shaft head of the pressure roller of an embodiment of the utility model is not connected to the mounting hole.

[0016] Figure 2 It is a cross-sectional schematic diagram of the installation process of the shaft head and bearing of the pressure roller in the embodiment of the utility model.

[0017] Figure 3 It is a cross-sectional schematic diagram of the disassembly process of the shaft head and bearing of the pressure roller according to the embodiment of the utility model.

[0018] Figure 4 It is a three-dimensional schematic diagram of the shaft head part of an embodiment of the utility model.

[0019] Figure 5 It is an enlarged schematic diagram of part A of the embodiment of the present utility model.

[0020] Figure 6 It is a cross-sectional schematic diagram of the installation process of the shaft head of the existing pressure roller and the existing bearing in the background technology of the utility model.

[0021] Figure 7 It is a cross-sectional schematic diagram of the disassembly process of the shaft head and the existing bearing of the existing pressure roller in the background technology of the utility model. DETAILED DESCRIPTION

[0022] like Figure 1 —— Figure 5 A main machine pressure roller shown includes a roller body 1 and a mounting bearing 4. The roller body 1 is wrapped with rubber 2 on the circumferential side. Shaft heads 3 are coaxially arranged at both ends of the roller body 1. The mounting bearing 4 is provided with a mounting hole 401 that is plugged in with the shaft head 3. The shaft head 3 is provided with a taper. The shaft head 3 and the mounting hole 401 can be tightly plugged in, that is, the mounting hole 401 is provided with the same taper as the shaft head 3. The shaft head 3 includes an upper end face 301 and a lower end face 302. The diameter of the upper end face 301 is smaller than the diameter of the lower end face 302. The upper end face 301 and the lower end face 302 are coaxially arranged. The lower end face 302 is fixedly connected to the roller body 1. The diameter of the upper end face 301 is R1, the diameter of the lower end face 302 is R2, the height of the shaft head 3 is L, the taper ratio of the shaft head 3 is (R2-R1) / L, and the taper ratio of the shaft head 3 is 1 / 12. < (R2-R1) / L < 7 / 12. At the same height, the greater the taper ratio, the smaller the diameter of the upper end surface 301 of the shaft head 3, that is, the greater the taper of the shaft head 3, the lower its strength, and the greater the taper, the lower the reliability of the fit with the plug interface, so the taper ratio of the shaft head 3 is preferably 1 / 12, and the shaft head 3 is coaxially integrated with the roller body 1.

[0023] The shaft head 3 is provided with a taper, and the diameter of the upper end face 301 is smaller than the diameter of the lower end face 302, that is, the diameter of the shaft head 3 gradually decreases from the end connected to the roller body 1 to the end of the shaft head 3 away from the roller body 1, and the mounting hole 401 and the shaft head 3 can be tightly plugged together. During installation, when the shaft head 3 begins to enter the mounting hole 401, there is a gap 5 between the circumferential side of the shaft head 3 and the side wall of the mounting hole 401. In the process of the shaft head 3 penetrating into the mounting hole 401, the gap 5 gradually decreases until the circumferential side of the shaft head 3 is tightly matched with the inner wall of the mounting hole 401. The installation and fixation of the shaft head 3 is achieved by the friction force generated by the tight fit. In the process of the gradual reduction of the above-mentioned gap 5, the shaft head There is no contact between the circumferential side surface 3 and the mounting hole 401 to generate friction, thus avoiding the generation of resistance for the shaft head 3 to enter the mounting hole 401, facilitating the entry of the shaft head 3, and making installation convenient and labor-saving. During disassembly and assembly, after holding or using a clamp to fix the bearing 4, use a tool to knock on the upper end surface 301 of the shaft head 3, and the circumferential side surface of the shaft head 3 and the inner wall of the mounting hole 401 exit the tight fit state, and a gap 5 is generated between the circumferential side surface of the shaft head 3 and the inner wall of the mounting hole 401. During the process of the shaft head 3 exiting the mounting hole 401, the circumferential side surface of the shaft head 3 and the inner wall of the mounting hole 401 do not contact to generate friction, thus avoiding the generation of resistance for the shaft head 3 to exit the mounting hole 401, and making disassembly and assembly convenient and labor-saving.

Claims

1. A main machine pressure roller, comprising a roller body and a mounting bearing, wherein shaft heads are coaxially arranged at both ends of the roller body, and the mounting bearing is provided with a mounting hole for plugging and matching with the shaft head, wherein: The shaft head is provided with a taper, and the shaft head and the mounting hole can be tightly plugged and matched.

2. The main machine pressure roller according to claim 1, characterized in that: The shaft head includes an upper end face and a lower end face, the diameter of the upper end face is smaller than the diameter of the lower end face, the upper end face and the lower end face are coaxially arranged, the lower end face is fixedly connected to the roller body, the diameter of the upper end face is R1, the diameter of the lower end face is R2, the height of the shaft head is L, the taper ratio of the shaft head is (R2-R1) / L, and the taper ratio of the shaft head is 1 / 12 < (R2-R1) / L < 7 / 12.

3. The main machine pressure roller according to claim 2, characterized in that: The taper ratio of the shaft head is 1 / 12.

4. A main machine pressure roller according to claim 1, 2 or 3, characterized in that: The shaft head is coaxially integrally formed with the roller body.

5. The main machine pressure roller according to claim 1, characterized in that: The circumferential side surface of the roller body is wrapped with rubber.

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