High-temperature protection aluminum guide roller for oven

Abstract

The present invention relates to a high-temperature protection aluminum guide roller for an oven, including a roller. It is characterized in that: a central shaft is penetrated through the roller. Rotating bearings are respectively installed at both ends of the roller. The central shaft respectively passes through the rotating bearings and is in close contact with the end faces of the rotating bearings facing the inner cavity of the roller through locking members with an outer diameter larger than the inner diameter of the inner holes of the rotating bearings. Wedge-shaped sleeves with a cross-section are respectively arranged on the central shaft at the two rotating bearings. The sleeves extend from the outside along the axial direction of the roller to the inside along the axial direction of the roller and the area gradually increases, and one end abuts against the rotating bearing to form a sealing end, and the sealing end covers the inner hole of the rotating bearing. An exhaust hole communicating with the inside of the roller is opened on the outer ring of one of the rotating bearings. The beneficial effect of the present invention is that the internal sealing performance of the roller is better, and the problem that high-temperature air in the oven enters the inside of the aluminum roller, causing thermal expansion and contraction deformation of the aluminum roller, is solved.

Description

Technical Field

[0001] The present invention relates to the field of ovens for hot packaging of foods and industrial products, and particularly to high-temperature protection aluminum guide rollers for ovens. Background Art

[0002] In the fields of hot packaging of foods and industrial products, packaging papers and packaging films are heated by ovens to achieve heat shrinkage for packaging foods and industrial products. However, the gap between the inner cavity of the aluminum guide roller in the existing oven and the outside world is relatively large after assembly. When the high-temperature air in the oven enters the aluminum guide roller and mixes with the air inside the aluminum guide roller, the aluminum guide roller will be deformed, and it cannot play its original role after deformation. Therefore, it is urgent to solve this problem. Summary of the Invention

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

[0004] Provide a high-temperature protection aluminum guide roller for an oven.

[0005] To achieve the above object, the present invention provides the following technical solution: A high-temperature protection aluminum guide roller for an oven, including a roller barrel, characterized in that: a central shaft is penetrated through the roller barrel, rotating bearings are respectively installed at both ends of the roller barrel, the central shaft respectively passes through the rotating bearings and is in close contact with the end faces of the rotating bearings facing the inner cavity of the roller barrel through locking members with an outer diameter larger than the inner hole diameter of the rotating bearings, sleeves with a wedge-shaped cross-section are respectively arranged on the central shaft at the two rotating bearing positions, the sleeves extend from the outside of the roller barrel in the axial direction to the inside of the roller barrel in the axial direction and the area gradually increases, and one end of the sleeve abuts against the rotating bearing to form a sealing end, the sealing end covers the inner hole of the rotating bearing, and an exhaust hole communicating with the inside of the roller barrel is opened on the outer ring of one of the rotating bearings.

[0006] By adopting the above technical solution, the central shaft and two rotating bearings are connected to both ends of the roller barrel. After connection, a locking member is arranged at one end of the central shaft close to the rotating bearing inside the roller barrel to seal the inner hole at one end of the rotating bearing. Then, sleeves with a wedge-shaped cross-section are arranged at both ends of the central shaft outside the roller barrel. One end of the sleeve abuts against the rotating bearing and this end is the sealing end, and the sealing section covers the inner hole of the bearing, realizing the sealing of the inner hole of the bearing towards one end outside the roller barrel, preventing hot air from entering the inside of the roller barrel through the gap existing at the inner hole of the bearing and mixing with the air inside the roller barrel when the aluminum roller is used in the oven, so as to avoid deformation of the roller barrel, thereby preventing the roller barrel from losing its original effect, improving the service life of the roller barrel, and arranging an exhaust hole to ensure the balance of the air pressure inside and outside the roller barrel.

[0007] The above-mentioned high-temperature protection aluminum guide roller for an oven can be further set as: the central shaft includes a first half shaft and a second half shaft, one ends of the first half shaft and the second half shaft pass through the inner hole of the bearing, and the locking member is located at one ends of the first half shaft and the second half shaft penetrating into the roller barrel.

[0008] With the above technical solution, by setting the central axis as two half shafts, inserting one end of the first half shaft and the second half shaft into the roller and passing through the inner hole of the bearing, and setting the locking member at this end, the same effect can also be achieved.

[0009] The above high-temperature protection aluminum guide roller for the oven can be further set as follows: the locking member is a locking nut, and the ends of the first half shaft and the second half shaft inserted into the roller are both provided with external threads adapted to the locking nut. The first half shaft and the second half shaft are welded to the locking nut at the other end opposite to the rotation bearing to form a first weld seam.

[0010] With the above technical solution, by setting the locking member as a locking nut, and welding the other end of the locking nut opposite to the rotation bearing to the first half shaft and the second half shaft, the threaded connection between the first half shaft and the second half shaft and the locking nut is sealed, so that hot air cannot enter the inside of the roller through the gap between the internal and external threads, further improving the sealing effect.

[0011] The above high-temperature protection aluminum guide roller for the oven can be further set as follows: an aluminum alloy welding treatment is carried out between the rotation bearing and the roller.

[0012] With the above technical solution, through the aluminum alloy welding treatment, the outer ring of the rotation bearing is welded to the inner wall of the aluminum roller to prevent hot air from entering the inside of the roller through the gap between the outer ring of the bearing and the inner wall of the roller.

[0013] The above high-temperature protection aluminum guide roller for the oven can be further set as follows: the locking nut is a steel locking nut.

[0014] With the above technical solution, using a steel locking nut facilitates welding the locking nut to the first half shaft and the second half shaft.

[0015] The above high-temperature protection aluminum guide roller for the oven can be further set as follows: both the first half shaft and the second half shaft are made of steel.

[0016] With the above technical solution, using a steel shaft head facilitates welding the bearing to the steel locking nut.

[0017] The above high-temperature protection aluminum guide roller for the oven can be further set as follows: the inner diameter of the inner hole of the rotation bearing is Φ18mm.

[0018] The above high-temperature protection aluminum guide roller for the oven can be further set as follows: the outer diameter of the sealed end is Φ40mm.

[0019] The above high-temperature protection aluminum guide roller for the oven can be further set as follows: the outer diameter of the locking nut is Φ48mm.

[0020] The beneficial effects of the present invention are as follows: The internal sealing performance of the roller is better, solving the problem that high-temperature air in the oven enters the aluminum roller, causing thermal expansion and contraction deformation of the aluminum roller.

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the present invention. Specific Embodiments

[0023] See Figure 1 As shown: The high-temperature protection aluminum guide roller for the oven includes a roller 1. A central shaft passes through the roller 1. Rotating bearings 3 are respectively installed at both ends of the roller 1. The central shaft passes through the rotating bearings 3 respectively and is in close contact with the end face of the rotating bearing 3 facing the inner cavity of the roller 1 through a locking nut 4 whose outer diameter is larger than the inner hole diameter of the rotating bearing 3. Wedge-shaped sleeves 5 with a cross-section in the shape of a wedge are respectively provided on the central shaft at the two rotating bearings 3. The sleeve 5 extends from the outside of the roller 1 along the axial direction to the inside of the roller 1 and the area gradually increases, and one end abuts against the rotating bearing 3 to form a sealing end 51. The sealing end 51 covers the inner hole 31 of the rotating bearing. An exhaust hole 321 communicating with the inside of the roller 1 is opened on the outer ring 32 of one of the rotating bearings 3. The central shaft 2 includes a first half shaft 21 and a second half shaft 22. One end of the first half shaft 21 and the second half shaft 22 passes through the inner hole 31 of the bearing. The locking nut 4 is located at the end where the first half shaft 21 and the second half shaft 22 penetrate into the roller 1. External threads adapted to the locking nut 4 are provided at the ends of the first half shaft 21 and the second half shaft 22 extending into the roller 1. The first half shaft 21 and the second half shaft 22 are welded to the locking nut 4 at the other end opposite to the abutting rotating bearing 3 to form a first weld seam. An aluminum alloy welding treatment is carried out between the rotating bearing 3 and the roller 1 to form a second weld seam 33.

Claims

1. High-temperature protection aluminum guide roller for oven, including a roller tube, Characterized in that: A central shaft is penetrated in the roller tube. The central shaft includes a first half shaft and a second half shaft. One ends of the first half shaft and the second half shaft penetrate through the inner holes of the bearings. Rotating bearings are respectively installed at both ends of the roller tube. The central shaft respectively penetrates through the rotating bearings and is in close contact with the end faces of the rotating bearings facing the inner cavity of the roller tube through locking parts with an outer diameter larger than the inner diameter of the inner holes of the rotating bearings. The locking parts are located at one ends of the first half shaft and the second half shaft penetrating into the roller tube. Wedge-shaped sleeves with a cross-section in the shape of a wedge are respectively arranged on the central shaft at the two rotating bearings. The sleeves extend from the outside of the roller tube along the axial direction of the roller tube to the inside of the roller tube and the area gradually increases, and one end abuts against the rotating bearing to form a sealing end. The sealing end covers the inner hole of the rotating bearing. An exhaust hole communicating with the inside of the roller tube is opened on the outer ring of one of the rotating bearings; The locking part is a locking nut. External threads adapted to the locking nut are respectively arranged at one ends of the first half shaft and the second half shaft extending into the roller tube. The first half shaft and the second half shaft are welded to form a first weld seam at the other ends opposite to the locking nut abutting against the rotating bearing. A second weld seam is formed by welding between the rotating bearing and the roller tube.

2. The high-temperature protection aluminum guide roller for oven according to claim 1, Characterized in that: Aluminum alloy welding treatment is carried out between the rotating bearing and the roller tube.

3. The high-temperature protection aluminum guide roller for oven according to claim 2, Characterized in that: The locking nut is a steel locking nut.

4. The high-temperature protection aluminum guide roller for oven according to claim 3, Characterized in that: Both the first half shaft and the second half shaft are made of steel.

5. The high-temperature protection aluminum guide roller for oven according to claim 4, Characterized in that: The inner diameter of the inner hole of the rotating bearing is Φ18mm.

6. The high-temperature protection aluminum guide roller for oven according to claim 5, Characterized in that: The outer diameter of the sealing end is Φ40mm.

7. The high-temperature protection aluminum guide roller for oven according to claim 6, Characterized in that: The outer diameter of the locking nut is Φ48mm.

Images