Medium pressure roller press tile type roller skin structure

Abstract

The present invention discloses a tile-type roller skin structure of a medium-pressure roller press, comprising a tile-type roller skin, a roller skin locking ring, a roller skin locking screw, a roller skin key and a roller shaft, wherein the tile-type roller skin has a fan-shaped cross section; the fan-shaped outer arc surface has a plurality of die cavities; the fan-shaped two side surfaces have stepped grooves below; the two ends of the tile-type roller skin have wedge-shaped flanges; the wedge-shaped flange has a first bolt hole; the roller skin locking ring has a conical inner circular surface; the end face of the roller skin locking ring has a plurality of through holes and threaded holes; the roller skin key has a second bolt hole; the roller shaft has an annular groove; the annular groove has a plurality of threaded holes and keyways; the stepped grooves of two tile-type roller skins can be spliced ​​to form a U-shaped groove; and a plurality of tile-type roller skins can be spliced ​​into a complete circular ring. The present invention can reduce the difficulty of disassembling and assembling the roller skin, reduce the roller extrusion surface misalignment caused by processing errors, reduce the difficulty of mechanical processing, and ensure that the overall structure is stable and reliable.

Description

Technical Field

[0001] The invention relates to a component of a medium pressure roller press, in particular to a tile-type roller skin structure of a medium pressure roller press. Background Art

[0002] The existing pad-type roller skin structure of the medium-pressure roller press is generally divided into two structures: a pad-type roller skin with a flat bottom surface and a pad-type roller skin with a circular bottom surface, and each roller skin has one or more key grooves on its bottom surface.

[0003] The tile-type roller skin with a flat bottom surface is connected to the polyhedral roller shaft by precision-machined bolts, which cannot effectively prevent loosening and cannot eliminate the roller extrusion surface misalignment caused by machining errors.

[0004] The tile-type roller skin with a circular arc bottom is connected to the cylindrical roller shaft by a conical ring. Its disassembly and assembly process requires the assistance of special tools and is relatively cumbersome.

[0005] Both existing structures have relatively stringent requirements on the shape tolerance of the contact surface between the roller shaft and the roller skin, and the shape and position tolerance of the keyway. Summary of the invention

[0006] In order to solve the defects and shortcomings existing in the above-mentioned prior art, the present invention provides a tile-type roller skin structure of a medium-pressure roller press, which can reduce the difficulty of disassembly and assembly of the roller skin, reduce the misalignment of the roller extrusion surface caused by processing errors, reduce the difficulty of mechanical processing, and ensure that the overall structure is stable and reliable.

[0007] The technical solution of the present invention is as follows: a pad-type roller skin structure of a medium-pressure roller press comprises a pad-type roller skin, a roller skin locking ring, a roller skin locking screw, a roller skin key and a roller shaft, wherein the pad-type roller skin has a fan-shaped cross-section; the fan-shaped outer arc surface has a plurality of die cavities; the two side surfaces of the fan-shaped have stepped grooves below; the pad-type roller skin has wedge-shaped flanges at both ends; the wedge-shaped flange has a first bolt hole; the roller skin locking ring has a conical inner circular surface; the end surface of the roller skin locking ring has a plurality of through holes and threaded holes; the roller skin key has a second bolt hole; the roller shaft has an annular groove; the annular groove has a plurality of threaded holes and keyways; the stepped grooves of the two pad-type roller skins can A U-shaped groove is formed by splicing, and the interior of the U-shaped groove is used for the roller skin locking screw to pass through; the opening of the U-shaped groove cooperates with the roller skin key; the roller skin key is fixed in the keyway through the second bolt hole and the threaded hole in the roller shaft keyway; a number of the tile-type roller skins can be spliced ​​into a complete ring, and the tile-type roller skins are fixed in the annular groove of the roller shaft through the first bolt hole and the threaded hole on the roller shaft, and the inner arc surface of the tile-type roller skin contacts and tightly fits with the bottom surface of the groove of the roller shaft; the conical inner surface of the roller skin locking ring contacts and tightly fits with the wedge-shaped flanges at both ends of the tile-type roller skin, and is tightened by the roller skin locking screw.

[0008] Preferably, the first bolt hole and the second bolt hole are both stepped holes.

[0009] This structure further ensures the assembly firmness of each component.

[0010] Preferably, when the axial length of the outer arc surface of the pad-type roller skin is 380mm~400mm, the axial length of the inner arc surface of the pad-type roller skin is 475mm~495mm, the diameter of the inner arc surface of the pad-type roller skin is 580~600mm, and the diameter of the outer arc surface of the pad-type roller skin should be 800~825mm.

[0011] At this time, the angle between the generatrix of the tapered inner circle of the roller locking ring and the axis is 15±1 degrees, the angle between the generatrix of the tapered surface of the wedge-shaped flanges at both ends of the tile-type roller and the axis is 15±1 degrees, and the angle formed by the stepped grooves on both sides of the tile-type roller is 30±0.5 degrees. At this time, 12 tile-type rollers are assembled into a complete ring.

[0012] Preferably, when the axial length of the outer arc surface of the pad-type roller skin is 305mm~325mm, the axial length of the inner arc surface of the pad-type roller skin is 400mm~420mm, the diameter of the inner arc surface of the pad-type roller skin is 550~570mm, and the diameter of the outer arc surface of the pad-type roller skin is 790~815mm.

[0013] At this time, the angle between the generatrix of the tapered inner circle of the roller locking ring and the axis is 15±1 degrees, the angle between the generatrix of the tapered surface of the wedge-shaped flanges at both ends of the tile-type roller and the axis is 15±1 degrees, and the angle formed by the stepped grooves on both sides of the tile-type roller is 30±0.5 degrees. At this time, 12 tile-type rollers are assembled into a complete ring.

[0014] The stepped grooves on both sides of each tile-type roller skin of the present invention form a specific angle. When placed between the two roller skin keys, the specific angle allows the tile-type roller skin to slide in more easily without strictly aligning the keyway on the roller shaft, which can avoid the problem of difficulty in inserting the tile-type roller skin due to a slight position error between the keyway on the roller shaft and the stepped groove during processing. In addition, no knocking is required during the assembly process, avoiding the risk of the tile-type roller skin being broken due to improper knocking. Each tile-type roller skin is fixed to the roller shaft with a number of bolts, which prevents the tile-type roller skin located below from falling off the roller shaft before installing the roller skin locking ring. No special clamping tools are required for disassembly and assembly, which reduces the workload of disassembling and assembling the bolts by 50%. The bolts are not subject to shear force, and after installing the roller skin locking ring, even if the bolts are loose, there is no risk of causing the tile-type roller skin to fall off. The medium-pressure roller press has a tile-type roller skin structure, in which the inner arc surface of the tile-type roller skin is tightly matched with the bottom surface of the annular groove of the roller shaft. Compared with the tile-type roller skin structure of the medium-pressure roller press with a flat bottom surface, even if there is an error in the corresponding keyway position, it will not cause misalignment of the roller extrusion surface. Moreover, the circular roller shaft is easier to control the processing accuracy than the more prismatic roller shaft, thereby reducing manufacturing costs and improving product quality and performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of a single tile-type roller skin in the present invention;

[0017] Figure 3 It is a schematic diagram of splicing two adjacent tile-type roller skins in the present invention;

[0018] In the figure, 101. tile-type roller skin, 102. first bolt hole, 103. wedge-shaped flange, 104. die cavity, 201. stepped groove, 202. U-shaped groove opening, 203. inside of the U-shaped groove, 204. outer arc surface, 205. inner arc surface, 301. roller shaft, 302. roller skin locking ring, 303. conical inner circular surface, 304. roller skin locking screw, 305. roller skin key, 306. second bolt hole, 307. annular groove. DETAILED DESCRIPTION

[0019] The following will combine the preferred embodiment of the present invention to provide a roller press medium pressure roller press pad type roller skin structure and its accessories Figure 1 , 2 , 3 further illustrate the present invention.

[0020] The present invention provides a pad-type roller skin structure for a roller press, comprising a pad-type roller skin 101, a roller skin locking ring 302, a roller skin locking screw 304, a roller skin key 305 and a roller shaft 301. The pad-type roller skin 101 has a fan-shaped cross section; the fan-shaped outer arc surface 204 has a plurality of die cavities 104; the two sides of the fan-shaped have stepped grooves 201 below; the pad-type roller skin 101 has wedge-shaped flanges 103 at both ends; the wedge-shaped flange 103 has a first bolt hole 102; the roller skin locking ring 302 has a conical inner circular surface; the end face of the roller skin locking ring 302 has a plurality of through holes and threaded holes; the roller skin key 305 has a second bolt hole 306; the roller shaft 301 has an annular groove 307; the annular groove 307 has a plurality of threaded holes and keyways. The stepped grooves 201 of two tile-type roller skins 101 can be spliced ​​to form a U-shaped groove, and the interior 203 of the U-shaped groove can allow the roller skin locking screw 304 to pass through; the U-shaped groove opening 202 cooperates with the roller skin key 305; the roller skin key 305 is fixed in the keyway through the second bolt hole 306 and the threaded hole in the keyway of the roller shaft 301; several tile-type roller skins 101 can be spliced ​​into a complete ring, and the tile-type roller skins 101 are fixed in the annular groove 307 of the roller shaft 301 through the first bolt hole 102 and the threaded hole on the roller shaft 301, and the inner arc surface 205 of the tile-type roller skin 101 contacts and tightly fits with the bottom surface of the annular groove 307 of the roller shaft 301; the conical inner circular surface 303 of the roller skin locking ring 302 contacts and tightly fits with the wedge-shaped flanges 103 at both ends of the tile-type roller skin 101, and is tightened by the roller skin locking screw 304.

[0021] In the medium-pressure roller press pad-type roller skin structure of the present invention, the stepped grooves 201 on both sides of each pad-type roller skin 101 form a specific angle. When placed between two roller skin keys 305, the specific angle allows the pad-type roller skin 101 to slide in more easily without strictly aligning the keyway on the roller shaft 301. This can avoid the problem of the pad-type roller skin 101 being difficult to install due to a slight position error between the keyway on the roller shaft 301 and the stepped groove 201 during processing. In addition, no knocking is required during the assembly process, avoiding the risk of the pad-type roller skin 101 being broken due to improper knocking. Each tile-type roller skin 101 is fixed on the roller shaft 301 with a number of bolts, and before the roller skin locking ring 302 is installed, the tile-type roller skin 101 located below is prevented from falling off from the roller shaft 301. No special clamping tools are required for disassembly and assembly, and the workload of disassembly and assembly of bolts is reduced by 50%. The bolts are not subject to shear force, and after the roller skin locking ring 302 is installed, even if the bolts are loose, there is no risk of causing the tile-type roller skin 101 to fall off. In the tile-type roller skin structure of the medium-pressure roller press, the inner arc surface 205 of the tile-type roller skin 101 is tightly matched with the bottom surface of the annular groove 307 of the roller shaft. Compared with the tile-type roller skin structure of the medium-pressure roller press with a flat bottom surface, even if there is an error in the corresponding keyway position, it will not cause the roller extrusion surface to be misaligned, and the circular roller shaft is easier to control the processing accuracy than the more prismatic roller shaft, thereby reducing the manufacturing cost and improving the product quality and performance.

[0022] Example 1

[0023] When the axial length of the outer arc surface 204 of the pad-type roller skin 101 is 380mm-400mm, the axial length of the inner arc surface 205 of the pad-type roller skin 101 should be 475mm-495mm, the diameter of the inner arc surface 205 of the pad-type roller skin 101 should be 580-600mm, the diameter of the outer arc surface 204 of the pad-type roller skin 101 should be 800-825mm, and the tapered inner surface of the roller skin locking ring 302 The included angle between the 303 generatrix and the axis should be 15±1 degrees, the included angle between the cone generatrix of the wedge-shaped flange 103 at both ends of the tile-type roller skin 101 and the axis should be 15±1 degrees, and the included angle formed by the stepped grooves 201 on both sides of the tile-type roller skin 101 should be 30±0.5 degrees. A complete ring should be formed by 12 tile-type roller skins 101. At this time, the tile-type roller skin structure of the medium-pressure roller press is easy to manufacture and assemble, and has the best performance and economic benefits;

[0024] Example 2

[0025] When the axial length of the outer arc surface 204 of the pad-type roller skin 101 is 305mm-325mm, the axial length of the inner arc surface 205 of the pad-type roller skin 101 should be 400mm-420mm, the diameter of the inner arc surface 205 of the pad-type roller skin 101 should be 550-570mm, the diameter of the outer arc surface 204 of the pad-type roller skin 101 should be 790-815mm, and the tapered inner surface of the roller skin locking ring 302 The angle between the 303 generatrix and the axis should be 15±1 degrees, the angle between the conical generatrix of the wedge-shaped flanges 103 at both ends of the tile-type roller skin 101 and the axis should be 15±1 degrees, and the angle formed by the step grooves 201 on both sides of the tile-type roller skin 101 should be 30±0.5 degrees. A complete ring should be formed by 12 tile-type roller skins 101. At this time, the tile-type roller skin structure of the medium-pressure roller press is easy to manufacture and assemble, and has the best performance and economic benefits.

[0026] The above is only a specific embodiment of the present invention. However, the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A tile-type roller skin structure for a medium-pressure roller press. Features: It includes a pad-type roller skin, a roller skin locking ring, a roller skin locking screw, a roller skin key and a roller shaft. The pad-type roller skin has a fan-shaped cross-section; the fan-shaped outer arc surface has a plurality of die cavities; the two side surfaces of the fan-shaped have stepped grooves below; the pad-type roller skin has wedge-shaped flanges at both ends; the wedge-shaped flange has a first bolt hole; the roller skin locking ring has a conical inner circular surface; the end surface of the roller skin locking ring has a plurality of through holes and threaded holes; the roller skin key has a second bolt hole; the roller shaft has an annular groove; the annular groove has a plurality of threaded holes and keyways; the stepped grooves of two pad-type roller skins can be spliced ​​to form a U-shaped groove. The U-shaped groove is used for the roller skin locking screw to pass through; the opening of the U-shaped groove cooperates with the roller skin key; the roller skin key is fixed in the keyway through the second bolt hole and the threaded hole in the roller shaft keyway; several of the tile-type roller skins can be assembled into a complete ring, and the tile-type roller skins are fixed in the annular groove of the roller shaft through the first bolt hole and the threaded hole on the roller shaft, and the inner arc surface of the tile-type roller skin contacts and tightly cooperates with the bottom surface of the groove of the roller shaft; the conical inner surface of the roller skin locking ring contacts and tightly cooperates with the wedge-shaped flanges at both ends of the tile-type roller skin, and is tightened by the roller skin locking screw.

2. The medium pressure roller press pad-type roller skin structure according to claim 1, Features: The first bolt hole and the second bolt hole are both stepped holes.

3. The tile-type roller skin structure of a medium-pressure roller press according to claim 1, Features: When the axial length of the outer arc surface of the pad-type roller skin is 380mm~400mm, the axial length of the inner arc surface of the pad-type roller skin is 475mm~495mm, the diameter of the inner arc surface of the pad-type roller skin is 580~600mm, and the diameter of the outer arc surface of the pad-type roller skin should be 800~825mm.

4. The tile-type roller skin structure of a medium-pressure roller press according to claim 1, Features: When the axial length of the outer arc surface of the pad-type roller skin is 305mm~325mm, the axial length of the inner arc surface of the pad-type roller skin is 400mm~420mm, the diameter of the inner arc surface of the pad-type roller skin is 550~570mm, and the diameter of the outer arc surface of the pad-type roller skin is 790~815mm.

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