Concave-convex roller skin of double-roller sand making machine

Abstract

The utility model discloses a concave-convex roller sheet of a double-roller sand making machine, which comprises a driving roller sheet and a driven roller sheet, a rolling surface I is arranged on the outer wall of the driving roller sheet, a convex ring I and a convex ring II are arranged on the outer wall of the driving roller sheet, and the rolling surface I is positioned between the convex ring I and the convex ring II. According to the utility model, a concave surface structure is formed at the rolling surface I through the convex ring I and the convex ring II, and a narrow gap with uniform width can be formed between the rolling surface I and the rolling surface II when the driven roller skin is close to the driving roller skin, so that when the roller surfaces of the roller skin of the sand making machine are used, the abrasion loss at each part is the same, and the service life of the roller skin is prolonged. Therefore, the uniformity of the roller surface can be maintained for a long time, the roller surface of the roller skin does not need to be trimmed when the sand making machine is used for a long time, the maintenance cost of the double-roller sand making machine is reduced, uniform feeding of the double-roller sand making machine is achieved, the effect of maintaining uniform abrasion of the roller skin is achieved, the actual working area is increased compared with a common plane roller, and the service life of the double-roller sand making machine is prolonged. And the yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-roller sand making machines, in particular to a concave-convex roller skin of a double-roller sand making machine. Background Art

[0002] The double-roller sand making machine is a commonly used equipment in the production of machine-made sand. It has two squeezing rollers that rotate relative to each other. One squeezing roller is driven by a motor and is called the driving roller. The other squeezing roller is rotated by the friction of the material and is called the driven roller, so that the material is crushed between the driving roller and the driven roller.

[0003] Chinese patent application number CN201320684969.6 discloses a ball forming machine roller skin device, including a ball forming machine roller skin body, characterized in that: a plurality of outer circular forming grooves are provided on the outer surface of the ball forming machine roller skin body, and a conical hole is provided in the ball forming machine roller skin body, and a fixing device is provided on the inner side of the conical hole.

[0004] The outer walls of the driving roller and the driven roller of the roller machine have roller skins. In actual use, the gap between the two roller skins is uneven, resulting in inconsistent wear. This causes the roller skins to need to be trimmed after a period of use, thereby increasing the maintenance cost of the roller sand making machine. Therefore, it is urgent to design a concave and convex roller skin for the roller sand making machine to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a concave-convex roller skin of a double-roller sand making machine to solve the above-mentioned shortcomings in the prior art.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A concave-convex roller skin of a double-roll sand making machine includes a driving roller skin and a driven roller skin, the outer wall of the driving roller skin is provided with a rolling surface one, the outer wall of the driving roller skin is provided with a convex ring one and a convex ring two, the rolling surface one is located between the convex ring one and the convex ring two, the outer wall of the driven roller skin is provided with a rolling surface two, a gap is left between the rolling surface two and the rolling surface one, an arc one is provided between the convex ring one and the rolling surface one, and the outer wall of the end of the driven roller skin is provided with an arc two that is compatible with the arc one.

[0008] Furthermore, the driving roller skin and the driven roller skin are provided with conical surfaces inside, and the inner walls of the conical surfaces are provided with key grooves.

[0009] Furthermore, the inner key of the driving roller skin is connected with a positioning cylinder, the roller shaft is fixed inside the positioning cylinder, and conical rings are provided at both ends of the positioning cylinder, and the conical rings are sleeved on the outside of the roller shaft.

[0010] Furthermore, a key block is integrally formed on the outer wall of the tapered ring, and the key block is located inside the key slot.

[0011] Furthermore, the conical ring is fixed with centrally symmetrically distributed positioning posts near the outer wall of the positioning tube, the outer wall of the end of the positioning tube is provided with centrally symmetrically distributed positioning holes, the positioning posts are inserted into the positioning holes, and the outer wall of the positioning posts is provided with air-permeable grooves.

[0012] Furthermore, evenly distributed studs are fixed to the outer wall of the positioning cylinder, and one end of the stud passes through the conical ring and is connected to a nut via a thread.

[0013] In the above technical scheme, the utility model provides a concave-convex roller skin of a double-roller sand making machine, which has the beneficial effect of forming a concave surface structure on the rolling surface through convex ring one and convex ring two. When the driven roller skin is close to the driving roller skin, a narrow gap with uniform width can be formed between the rolling surface one and the rolling surface two, so that the roller surface of the sand making machine roller skin has the same amount of wear at all places during use, and the uniformity of the roller surface can be maintained for a long time, so that the sand making machine does not need to trim the roller surface of the roller skin during long-term use, reducing the maintenance cost of the double-roller sand making machine, and achieving uniform feeding of the double-roller sand making machine and maintaining uniform wear of the roller skin, and compared with ordinary flat rollers, the actual working area is increased, and the output is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 The utility model provides a schematic diagram of the overall structure of a concave and convex roller skin embodiment of a double-roller sand making machine.

[0016] Figure 2 A schematic cross-sectional structure diagram of an embodiment of a concave-convex roller skin of a double-roller sand making machine according to the present invention.

[0017] Figure 3 This is a schematic diagram of the positioning cylinder structure provided for an embodiment of the concave-convex roller skin of a double-roller sand making machine of the present invention.

[0018] Figure 4 This is an enlarged structural schematic diagram of point A provided for an embodiment of the concave-convex roller skin of a double-roller sand making machine of the present invention.

[0019] Description of reference numerals:

[0020] 1 driving roller skin, 2 driven roller skin, 3 rolling surface 1, 4 rolling surface 2, 5 arc 1, 6 arc 2, 7 conical surface, 8 key block, 9 convex ring 1, 10 keyway, 11 convex ring 2, 12 roller shaft, 13 positioning cylinder, 14 conical ring, 15 positioning column, 16 positioning hole, 17 stud, 18 nut, 19 ventilation groove. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-4 As shown, an embodiment of the present invention provides a concave-convex roller skin of a double-roll sand making machine, comprising a driving roller skin 1 and a driven roller skin 2, the outer wall of the driving roller skin 1 is provided with a rolling surface 3, the outer wall of the driving roller skin 1 is provided with a convex ring 1 9 and a convex ring 2 11, the rolling surface 3 is located between the convex ring 1 9 and the convex ring 2 11, the outer wall of the driven roller skin 2 is provided with a rolling surface 2 4, a gap is left between the rolling surface 2 4 and the rolling surface 1 3, a circular arc 1 5 is provided between the convex ring 1 9 and the rolling surface 1 3, and the end outer wall of the driven roller skin 2 is provided with an arc 2 6 adapted to the arc 1 5.

[0023] Specifically, in this embodiment, a driving roller skin 1 and a driven roller skin 2 are included. The outer wall of the driving roller skin 1 is provided with a rolling surface 3. The outer wall of the driving roller skin 1 is provided with a convex ring 19 and a convex ring 2 11. The rolling surface 3 is located between the convex ring 19 and the convex ring 2 11. The convex ring 19 and the convex ring 2 11 form a concave structure at the rolling surface 13. The outer wall of the driven roller skin 2 is provided with a rolling surface 2 4. A gap is left between the rolling surface 2 4 and the rolling surface 3. The gap between the rolling surface 2 4 and the rolling surface 3 is uniform and consistent. The convex ring 19 and the rolling surface An arc 15 is provided between the rolling surface 1 and the rolling surface 3, and an arc 26 is provided on the outer wall of the end of the driven roller skin 2 to match the arc 15. The arc 26 is in contact with the arc 15, so that the driving roller skin 1 and the driven roller skin 2 cooperate with each other, and the length of the driving roller skin 1 and the driven roller skin 2 is longer than that of the ordinary flat roller in the prior art. Therefore, compared with the ordinary flat roller, the actual working area is increased and the output is improved. At the same time, the rolling surface 13 and the rolling surface 24 are both treated with carbonitriding, so that the wear resistance and hardness of the driving roller skin 1 and the driven roller skin 2 are improved.

[0024] The utility model provides a concave-convex roller skin of a double-roller sand making machine, in which a concave structure is formed at the rolling surface 1 3 by means of convex ring 1 and convex ring 2 11. When the driven roller skin 2 is in close contact with the driving roller skin 1, a narrow gap of uniform width can be formed between the rolling surface 1 3 and the rolling surface 2 4, so that the roller surface of the sand making machine roller skin has the same amount of wear at all places when in use, and the uniformity of the roller surface can be maintained for a long time, so that the sand making machine does not need to trim the roller surface when in long-term use, thereby reducing the maintenance cost of the sand making machine, and achieving the effect of uniform feeding of the double-roller sand making machine and maintaining uniform wear of the roller skin, and increasing the actual working area compared with ordinary flat rollers, thereby improving production.

[0025] In another embodiment provided by the present invention, a conical surface 7 is provided inside the driving roller skin 1 and the driven roller skin 2, and a keyway 10 is opened on the inner wall of the conical surface 7; the internal key of the driving roller skin 1 is connected to the positioning cylinder 13, and the roller shaft 12 is fixed inside the positioning cylinder 13, and the rotation centers of the roller shaft 12, the positioning cylinder 13 and the driving roller skin 1 are all in a straight line, and conical rings 14 are provided at both ends of the positioning cylinder 13, and the conical ring 14 is sleeved on the outside of the roller shaft 12, and the conical ring 14 is adapted to the conical surface 7, and the driving roller skin 1 is limited by the conical ring 14 so that the driving roller skin 1 will not move outside the positioning cylinder 13; a key block 8 is integrally formed on the outer wall of the conical ring 14, and the key block 8 is located inside the keyway 10. The key block 8 on the conical ring 14 cooperates with the keyway 10, so that when the conical ring 14 is assembled inside the roller skin, it is convenient to determine the installation direction of the conical ring 14.

[0026] In another embodiment provided by the present invention, the conical ring 14 is fixed with a positioning column 15 which is symmetrically distributed in the center near the outer wall of the positioning tube 13, and the outer wall of the end of the positioning tube 13 is provided with a positioning hole 16 which is symmetrically distributed in the center. The positioning column 15 is inserted into the interior of the positioning hole 16, and the outer wall of the positioning column 15 is provided with a ventilation groove 19. The setting of the ventilation groove 19 allows the air in the positioning hole 16 to flow out when the positioning column 15 enters the interior of the positioning hole 16, thereby preventing the positioning column 15 from being blocked when inserted into the positioning hole 16; the outer wall of the positioning tube 13 is fixed with evenly distributed studs 17, one end of the stud 17 passes through the conical ring 14 and is threadedly connected to a nut 18, and the positioning column 15 is inserted into the interior of the positioning hole 16 to achieve the effect of limiting the conical ring 14 and the positioning tube 13, and at the same time, the conical ring 14 and the positioning tube 13 are pressed tightly by the nut 18, thereby making the conical ring 14 and the positioning tube 13 more firmly fixed.

[0027] Working principle: The concave structure is formed at the rolling surface 13 by the convex ring 1 and the convex ring 2 11. When the driven roller skin 2 and the driving roller skin 1 are in close contact, a narrow gap with uniform width is formed between the rolling surface 13 and the rolling surface 2 4, so that the roller surface of the sand making machine roller skin has the same amount of wear during use, and the uniformity of the roller surface can be maintained for a long time, so that the sand making machine does not need to trim the roller surface during long-term use, thereby reducing the maintenance cost of the roller sand making machine; the tapered ring 14 cooperates with the tapered surface, so that the tapered ring 14 is easy to The tapered ring 14 can be removed from the roller shell by removing the tapered ring 14. At the same time, the key block 8 on the tapered ring 14 cooperates with the keyway 10, making it easy to determine the installation direction of the tapered ring 14 when assembling it inside the roller shell. The positioning column 15 is inserted into the positioning hole 16 to achieve the effect of limiting the position between the tapered ring 14 and the positioning cylinder 13. At the same time, the nut 18 presses the tapered ring 14 and the positioning cylinder 13 tightly, thereby making the tapered ring 14 and the positioning cylinder 13 more firmly fixed.

[0028] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A concave-convex roller skin of a roller sand making machine, characterized in that: The invention comprises a driving roller skin (1) and a driven roller skin (2), wherein the outer wall of the driving roller skin (1) is provided with a rolling surface 1 (3), the outer wall of the driving roller skin (1) is provided with a convex ring 1 (9) and a convex ring 2 (11), the rolling surface 1 (3) is located between the convex ring 1 (9) and the convex ring 2 (11), the outer wall of the driven roller skin (2) is provided with a rolling surface 2 (4), a gap is left between the rolling surface 2 (4) and the rolling surface 1 (3), an arc 1 (5) is provided between the convex ring 1 (9) and the rolling surface 1 (3), and the outer wall of the end of the driven roller skin (2) is provided with an arc 2 (6) adapted to the arc 1 (5).

2. The concave-convex roller skin of the roller sand making machine according to claim 1, characterized in that: The driving roller skin (1) and the driven roller skin (2) are provided with conical surfaces (7) inside, and the inner walls of the conical surfaces (7) are both provided with key grooves (10).

3. The concave-convex roller skin of the roller sand making machine according to claim 2, characterized in that: The driving roller skin (1) is keyed internally to a positioning cylinder (13), a roller shaft (12) is fixed inside the positioning cylinder (13), and conical rings (14) are provided at both ends of the positioning cylinder (13), and the conical rings (14) are sleeved on the outside of the roller shaft (12).

4. The concave-convex roller skin of the roller sand making machine according to claim 3, characterized in that: A key block (8) is integrally formed on the outer wall of the tapered ring (14), and the key block (8) is located inside the key groove (10).

5. The concave-convex roller skin of the roller sand making machine according to claim 3, characterized in that: The conical ring (14) is fixed with a centrally symmetrically distributed positioning column (15) near the outer wall of the positioning cylinder (13); the outer wall of the end of the positioning cylinder (13) is provided with a centrally symmetrically distributed positioning hole (16); the positioning column (15) is inserted into the interior of the positioning hole (16); and the outer wall of the positioning column (15) is provided with a breathable groove (19).

6. The concave-convex roller skin of the roller sand making machine according to claim 3, characterized in that: The outer wall of the positioning cylinder (13) is fixed with evenly distributed studs (17), and one end of the stud (17) passes through the conical ring (14) and is connected to a nut (18) through a thread.

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