Anti-deformation device for heat treatment of iron casting

Abstract

The utility model relates to the technical field of heat treatment, and discloses an iron casting heat treatment anti-deformation device which comprises a heat-resisting ring, a first lead screw and a second lead screw are installed on the side of the heat-resisting ring in a threaded mode, a first nut is fixedly installed at one end of the first lead screw, and a first movable plate is rotatably installed at the other end of the first lead screw. A second nut is fixedly installed at one end of the second lead screw, a second movable plate is rotatably installed at the other end of the second lead screw, and a first through hole is formed in the first movable plate. Through mutual cooperation of the first lead screw, the second lead screw, the first movable plate and the second movable plate, the first clamping plate and the second clamping plate can be driven to move horizontally, the first clamping plate plays a role in positioning the inner side of an iron casting, and the second clamping plate plays a role in positioning the outer side of the iron casting; the upper end and the lower end of the iron casting are positioned, deformation of different surfaces of the iron casting is avoided, and the stability of the iron casting during heat treatment is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment, in particular to a heat treatment anti-deformation device for cast iron parts. Background Art

[0002] Heat treatment refers to a metal thermal processing process in which materials are heated, kept warm, and cooled in a solid state to obtain the desired structure and properties. Cast iron parts refer to items cast from molten iron, which often require heat treatment during the processing process. In order to prevent deformation of annular cast iron parts during heat treatment, anti-deformation devices are required to position them.

[0003] According to a search, Chinese patent document publication number CN106967875B discloses a device for preventing deformation during heat treatment of thin-walled annular parts. During a heat treatment process such as nitriding, the thin-walled annular part can be placed in a ring clamp body of the device, clamped using a radial positioning mechanism, and then placed together in a heat treatment device including a nitriding device for nitriding. Due to the restriction of the radial positioning mechanism, the inner and outer diameters of the thin-walled annular part will not tend to expand during the nitriding heat treatment, and the entire part will not deform. The size and accuracy of the inner and outer diameters and internal teeth will not exceed the specified range due to overall deformation, thereby reducing the scrap rate and manufacturing cost of the thin-walled annular part. However, the anti-deformation device only contacts the inner side of the annular part and cannot ensure that other surfaces will not deform. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a device for preventing deformation during heat treatment of cast iron parts, which can solve the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat treatment anti-deformation device for cast iron parts, comprising a heat-resistant ring, wherein a screw rod 1 and a screw rod 2 are installed on the side thread of the heat-resistant ring, one end of the screw rod 1 is fixedly installed with a nut 1, and the other end of the screw rod 1 is rotatably installed with a movable plate 1, one end of the screw rod 2 is fixedly installed with a nut 2, and the other end of the screw rod 2 is rotatably installed with a movable plate 2, a through hole 1 is provided inside the movable plate 1, a through hole 2 is provided inside the movable plate 2, a splint 1 is fixedly installed on the upper end of the movable plate 1, and a splint 2 is fixedly installed on the upper end of the movable plate 2, a column is fixedly installed on the outer side of the heat-resistant ring, a pressure ring is sleeved on the outer side of the column, and a hexagonal nut is threadedly installed on the outer side of the column.

[0008] Preferably, six of the screw rods 1 are arranged in a ring shape about the vertical center line of the heat-resistant ring, and the nut 1 is located outside the heat-resistant ring.

[0009] Through the above technical solution, the cast iron part is placed on the upper end of the heat-resistant ring, and the staff rotates the screw rod one through the nut one, and the screw rod one drives the movable plate one to move horizontally through the threaded structure.

[0010] Preferably, six of the second screw rods are arranged in a ring shape about the vertical center line of the heat-resistant ring, and the second nut is located on the inner side of the heat-resistant ring.

[0011] Through the above technical solution, the staff rotates the screw rod 2 through the nut 2, and the screw rod 2 drives the movable plate 2 to move horizontally through the threaded structure.

[0012] Preferably, the second screw rod is movably connected to the inner side of the first through hole, the first screw rod is movably connected to the inner side of the second through hole, and the first screw rod is parallel to the second screw rod.

[0013] Through the above technical solution, the second screw rod plays a guiding role on a pair of movable plates through the through hole, and the first screw rod plays a guiding role on the second movable plate through the through hole.

[0014] Preferably, the first and second splints are arc-shaped structures, and the first and second splints extend above the heat-resistant ring.

[0015] Through the above technical solution, the first clamping plate moves with the first movable plate to position the inner side of the cast iron part, and the second clamping plate moves with the second movable plate to position the outer side of the cast iron part.

[0016] Preferably, three upright posts are arranged in a ring shape about the vertical center line of the heat-resistant ring, and the upright posts extend above the first and second clamping plates.

[0017] Through the above technical solution, the pressure ring is sleeved on the outer side of the column from top to bottom and contacts the upper end of the cast iron part.

[0018] Preferably, the center of the pressure ring and the center of the heat-resistant ring are located on the same vertical line, and the hexagonal nut is fitted with the upper end of the pressure ring.

[0019] Through the above technical solution, the hexagonal nut is rotated, and the hexagonal nut plays a positioning role on the pressure ring through the thread structure.

[0020] Compared with the prior art, the present invention provides a device for preventing deformation of cast iron parts during heat treatment, which has the following beneficial effects:

[0021] 1. The utility model cooperates with each other through the arrangement of screw rod 1, screw rod 2, movable plate 1 and movable plate 2 to drive the clamping plate 1 and clamping plate 2 to move horizontally. The clamping plate 1 plays a positioning role on the inner side of the cast iron part, and the clamping plate 2 plays a positioning role on the outer side of the cast iron part.

[0022] 2. The utility model cooperates with the heat-resistant ring, column, pressure ring and hexagonal nut to position the upper and lower ends of the cast iron part, avoid deformation of different surfaces of the cast iron part, and effectively improve the stability of the cast iron part during heat treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the heat-resistant ring of the utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the screw rod of the utility model;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the screw rod of the utility model.

[0027] Among them: 1. Heat-resistant ring; 2. Screw rod 1; 3. Screw rod 2; 4. Nut 1; 5. Movable plate 1; 6. Nut 2; 7. Movable plate 2; 8. Through hole 1; 9. Through hole 2; 10. Clamp 1; 11. Clamp 2; 12. Column; 13. Press ring; 14. Hexagonal nut. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figure 1-4 As shown, the utility model provides a heat treatment anti-deformation device for cast iron parts, including a heat-resistant ring 1, a side thread of the heat-resistant ring 1 is installed with a screw rod 2 and a screw rod 2 3, one end of the screw rod 2 is fixedly installed with a nut 14, and the other end of the screw rod 2 is rotatably installed with a movable plate 15, one end of the screw rod 23 is fixedly installed with a nut 26, and the other end of the screw rod 23 is rotatably installed with a movable plate 27, a through hole 18 is provided inside the movable plate 15, a through hole 29 is provided inside the movable plate 27, a splint 10 is fixedly installed on the upper end of the movable plate 15, and a splint 2 11 is fixedly installed on the upper end of the movable plate 27, a column 12 is fixedly installed on the outer side of the heat-resistant ring 1, a pressure ring 13 is sleeved on the outer side of the column 12, and a hexagonal nut 14 is threadedly installed on the outer side of the column 12.

[0031] Specifically, six screw rods 2 are arranged in a ring shape about the vertical centerline of the heat-resistant ring 1, and nuts 4 are located outside the heat-resistant ring 1. The advantage is that the cast iron is placed on the upper end of the heat-resistant ring 1, and the operator rotates the screw rods 2 through the nuts 4, which drive the movable plate 5 horizontally through the threaded structure.

[0032] Specifically, six screw rods 3 are arranged in a ring shape about the vertical center line of the heat-resistant ring 1, and the nuts 6 are located inside the heat-resistant ring 1. The advantage is that when the worker rotates the screw rod 3 through the nuts 6, the screw rod 3 drives the movable plate 7 to move horizontally through the threaded structure.

[0033] Specifically, screw rod 2 3 is movably connected to the inner side of through hole 1 8, screw rod 1 2 is movably connected to the inner side of through hole 2 9, and screw rod 1 2 is parallel to screw rod 2 3. Advantageously, screw rod 2 3 guides movable plate 1 5 through through hole 1 8, and screw rod 1 2 guides movable plate 2 7 through through hole 2 9.

[0034] Specifically, the first clamping plate 10 and the second clamping plate 11 are arc-shaped structures, and the first clamping plate 10 and the second clamping plate 11 extend above the heat-resistant ring 1. The advantage is that the first clamping plate 10 moves with the movable plate 1 5 to position the inner side of the cast iron part, and the second clamping plate 11 moves with the movable plate 2 7 to position the outer side of the cast iron part.

[0035] Example 2:

[0036] like Figure 1-4 As shown, as an improvement to the previous embodiment, three uprights 12 are arranged in a ring shape about the vertical centerline of the heat-resistant ring 1, extending above the first and second clamping plates 10 and 11. Advantageously, the pressure ring 13 fits over the outer sides of the uprights 12 from top to bottom, contacting the upper end of the cast iron.

[0037] Specifically, the center of the pressure ring 13 is on the same vertical line as the center of the heat-resistant ring 1, and the hexagonal nut 14 is in contact with the upper end of the pressure ring 13. The advantage is that when the hexagonal nut 14 is rotated, the hexagonal nut 14 can position the pressure ring 13 through the thread structure.

[0038] When in use, the cast iron is placed on the upper end of the heat-resistant ring 1, and the staff rotates the screw rod 2 through the nut 4, and the screw rod 23 guides the movable plate 5 through the through hole 8. The screw rod 2 drives the movable plate 5 to move horizontally through the threaded structure. The screw rod 23 is rotated through the nut 26, and the screw rod 2 guides the movable plate 27 through the through hole 29. The screw rod 23 drives the movable plate 27 to move horizontally through the threaded structure. The splint 10 moves with the movable plate 5 to adjust the inner surface of the cast iron. The side plays a positioning role, the clamping plate 2 11 moves with the movable plate 2 7, and plays a positioning role on the outside of the cast iron part. The pressure ring 13 is put on the outside of the column 12 from top to bottom. After it contacts the upper end of the cast iron part, the hexagonal nut 14 is put on the outside of the column 12, and the hexagonal nut 14 is rotated. The hexagonal nut 14 plays a positioning role on the pressure ring 13 through the threaded structure. The heat-resistant ring 1 cooperates with the pressure ring 13 to position the upper and lower ends of the cast iron part, effectively preventing the cast iron part from deforming during the heat treatment process.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preventing deformation of cast iron parts during heat treatment, comprising a heat-resistant ring (1), characterized in that: The side thread of the heat-resistant ring (1) is provided with a screw rod (2) and a screw rod (3), one end of the screw rod (2) is fixedly provided with a nut (4), the other end of the screw rod (2) is rotatably provided with a movable plate (5), one end of the screw rod (3) is fixedly provided with a nut (6), the other end of the screw rod (3) is rotatably provided with a movable plate (7), the interior of the movable plate (5) is provided with a through hole (8), the interior of the movable plate (7) is provided with a through hole (9), the upper end of the movable plate (5) is fixedly provided with a splint (10), the upper end of the movable plate (7) is fixedly provided with a splint (11), the outer side of the heat-resistant ring (1) is fixedly provided with a column (12), the outer side of the column (12) is sleeved with a pressure ring (13), and the outer side of the column (12) is threadedly provided with a hexagonal nut (14).

2. The device for preventing deformation of cast iron parts during heat treatment according to claim 1, characterized in that: The screw rods (2) are arranged in a ring shape with six pieces about the vertical center line of the heat-resistant ring (1), and the nut (4) is located outside the heat-resistant ring (1).

3. The device for preventing deformation of cast iron parts during heat treatment according to claim 1, characterized in that: The second screw rod (3) is provided with six in a ring shape about the vertical center line of the heat-resistant ring (1), and the second nut (6) is located on the inner side of the heat-resistant ring (1).

4. The device for preventing deformation of cast iron parts during heat treatment according to claim 1, characterized in that: The second screw rod (3) is movably connected to the inner side of the first through hole (8), the first screw rod (2) is movably connected to the inner side of the second through hole (9), and the first screw rod (2) is parallel to the second screw rod (3).

5. The device for preventing deformation of cast iron during heat treatment according to claim 1, characterized in that: The first clamping plate (10) and the second clamping plate (11) are arc-shaped structures, and the first clamping plate (10) and the second clamping plate (11) extend to the top of the heat-resistant ring (1).

6. The device for preventing deformation of cast iron during heat treatment according to claim 1, characterized in that: Three upright posts (12) are arranged in a ring shape about the vertical center line of the heat-resistant ring (1), and the upright posts (12) extend above the first clamping plate (10) and the second clamping plate (11).

7. The device for preventing deformation of cast iron during heat treatment according to claim 1, characterized in that: The center of the pressure ring (13) and the center of the heat-resistant ring (1) are located on the same vertical line, and the hexagonal nut (14) is fitted with the upper end of the pressure ring (13).

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