Clamping structure for heat treatment of nodular iron casting

Abstract

The utility model discloses a clamping structure for heat treatment of nodular iron castings, and relates to the technical field of clamping devices, in the clamping structure, the iron castings can be well clamped, however, due to the fact that the lengths of the iron castings machined every time can be changed, the iron castings cannot be stably clamped if the lengths are large during clamping, and the clamping efficiency is greatly improved. The connecting shaft rod, the clamping arms, the upper pressing roller and the supporting roller are arranged, when a nodular iron casting is clamped, the supporting roller is supported on the inner wall of the iron casting, in addition, the upper pressing roller is fixed to the outer wall of the iron casting, and the inner wall and the outer wall jointly apply pressure, so that the clamping stability is improved to a certain degree; in addition, the length of the supporting roller and the length of the upper pressing roller can be adjusted according to changes of the length of the iron castings, the device is suitable for the iron castings of different specifications, and operation flexibility and convenience are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a clamping structure for heat treatment of ductile iron castings. Background Art

[0002] The heat treatment of ductile iron castings usually includes annealing, normalizing and quenching processes. These heat treatment processes can improve the mechanical properties, hardness and wear resistance of ductile iron castings. However, during the heat treatment of such ductile iron castings, they need to be clamped to ensure their position.

[0003] In this regard, the patent number CN211414917U discloses a processing clamping device for ductile iron parts, including a base, a stepping motor is provided on the upper surface of the support plate, an adjusting block is provided above the support plate, a clamping mechanism is provided on the side surface of the adjusting block away from the stepping motor, the clamping mechanism includes a clamping block, a groove is provided on the surface of one side of the clamping block, a clamping plate is provided on the surface of the groove, a baffle is provided on the upper and lower inner walls of the groove, a first spring is provided on the side surface of the baffle close to the clamping plate, and an elastic plate is provided inside the groove. The clamping mechanism provided in the utility model clamps the ductile iron parts together through the cooperation between the clamping block and the clamping plate, and the elastic plate and the first spring provide good buffering for the clamping plate. Even if the clamping block and the ductile iron parts are loose, the clamping plate will tightly clamp the ductile iron parts, and the clamping effect is good. In the above clamping mechanism, the cast iron parts can be well clamped, but because the length of the cast iron parts processed each time will change, if the length is long, it is impossible to clamp more stably during clamping.

[0004] In view of the above problems, a clamping structure for heat treatment of ductile iron castings is proposed. Utility Model Content

[0005] The utility model aims to provide a clamping structure for heat treatment of ductile iron castings, which solves the problem of length limitation of the clamping mechanism in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A clamping structure for heat treatment of ductile iron castings, comprising a support frame, a mounting plate is installed on the top of the support frame, and a clamping assembly is arranged on the mounting plate;

[0007] The clamping assembly includes a connecting shaft, the top end of the mounting plate is connected to the connecting shaft, the surface of the connecting shaft is connected to a clamping arm, the mounting plate and the clamping arm are rotatably connected via the connecting shaft, an upper pressure roller is embedded in the interior of the clamping arm, a supporting roller is embedded in the interior of the mounting plate, a driving motor is fixedly connected to the right side of the mounting plate, a transmission sprocket is connected to the output end of the driving motor, the outer surface of the transmission sprocket includes a traction chain, the traction chain runs through the interior of the mounting plate, the outer surface of the traction chain is also wrapped with a driving block, a cable is connected to the side of the driving block, the top of the cable is connected to a rivet point, and the rivet point is movably connected to the surface of the clamping arm.

[0008] Preferably, the outer surface of the support roller supports a ductile iron tubular cast, an upper pressure roller is pressed onto the outer surface of the ductile iron tubular cast, and the ductile iron tubular cast is fixed by the upper pressure roller and the support roller.

[0009] Preferably, the upper surface of the upper pressing roller is provided with an anti-slip structure, which consists of a steel ring assembly with an arc surface, the steel ring with an arc surface is sleeved on the surface of the upper pressing roller and remains fixedly connected, and the arc-shaped steel rings are evenly distributed on the upper pressing roller.

[0010] Preferably, the two groups of upper pressure rollers penetrate the interior of the clamping arm and are movably connected to the clamping arm, and the support rollers also penetrate the interior of the mounting plate and are movably connected to the mounting plate.

[0011] Preferably, the clamping arm and the riveted point are connected via a rotating shaft, and the bottom end of the cable is movably connected to the driving block.

[0012] Preferably, the driving blocks are provided in two groups, wherein one group of driving blocks is provided at the upper half of the traction chain, and the other group of driving blocks is provided at the lower half of the traction chain, and the distances between the two groups of driving blocks and the mounting plate are kept consistent.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model provides a clamping structure for heat treatment of ductile iron castings. The structure is provided with a connecting shaft, a clamping arm, an upper pressure roller and a support roller. When clamping the ductile iron castings, the support roller is supported on the inner wall of the castings, and the upper pressure roller is fixed on the outer wall of the castings. Pressure is applied by the inner and outer walls together, so that the stability of the clamping is improved to a certain extent. In addition, the lengths of the support roller and the upper pressure roller can be adjusted according to the needs according to the change of the length of the castings. The structure is suitable for castings of different specifications, which greatly increases the flexibility and convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the connecting shaft rod and the upper pressure roller of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the utility model in a state of clamping a ductile tubular cast iron piece;

[0018] Figure 4 It is a structural schematic diagram of the riveting point and the transmission sprocket of the utility model.

[0019] In the figure: 11, support frame; 12, mounting plate; 13, ductile iron casting; 2, clamping assembly; 21, connecting shaft; 22, clamping arm; 23, upper pressure roller; 24, support roller; 25, traction chain; 26, riveting point; 27, cable; 28, drive block; 29, transmission sprocket; 30, drive motor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0022] Combination Figure 1-Figure 4 The utility model discloses a clamping structure for heat treatment of ductile iron castings, comprising a support frame 11, a mounting plate 12 is mounted on the top of the support frame 11, a clamping assembly 2 is arranged on the mounting plate 12, when clamping and fixing the ductile iron tubular casting 13, the clamping assembly 2 is used to complete the clamping and fixing, two sets of upper pressure rollers 23 are respectively fixed on two points on the top surface of the ductile iron tubular casting 13, and a support roller 24 is used to fix a point on the inner wall of the ductile iron tubular casting 13, the operation is as follows:

[0023] The outer surface of the support roller 24 supports the ductile iron tubular casting 13, and the outer surface of the ductile iron tubular casting 13 is pressed with the upper pressing roller 23, and the ductile iron tubular casting 13 is fixed by the upper pressing roller 23 and the support roller 24. The upper surface of the upper pressing roller 23 is provided with an anti-skid structure, and the anti-skid structure is composed of a steel ring assembly with a circular arc surface, and the steel ring with a circular arc surface is sleeved on the surface of the upper pressing roller 23 and keeps a fixed connection, and the circular arc steel rings are evenly distributed on the upper pressing roller 23;

[0024] When the ductile iron tubular casting 13 is fixed, in order to avoid slipping, an anti-skid structure is provided on the surface of the upper pressure roller 23 to increase the friction force of the connection point, thus making the clamping more stable.

[0025] The clamping assembly 2 includes a connecting shaft 21, the top of the mounting plate 12 is connected to the connecting shaft 21, the surface of the connecting shaft 21 is connected to the clamping arm 22, the mounting plate 12 and the clamping arm 22 are rotatably connected through the connecting shaft 21, the interior of the clamping arm 22 is embedded with an upper pressure roller 23, two sets of upper pressure rollers 23 penetrate the interior of the clamping arm 22 and are movably connected to the clamping arm 22, and the support roller 24 also penetrates the interior of the mounting plate 12 and is movably connected to the mounting plate 12. In order to be suitable for ductile iron tubular castings 13 of different lengths, the support roller 24 and the upper pressure roller 23 are adjusted during clamping. In the section, the positions of the upper pressing roller 23 and the support roller 24 are changed by twitching the upper pressing roller 23 and the support roller 24. When the length of the ductile tubular cast iron part 13 is longer, the upper pressing roller 23 and the support roller 24 can be embedded deeper into the ductile tubular cast iron part 13 by twitching the upper pressing roller 23 and the support roller 24, thereby increasing the support for the ductile tubular cast iron part 13. When the length of the ductile tubular cast iron part 13 is shorter, the length of the embedded interior of the ductile tubular cast iron part 13 can be adjusted by twitching the upper pressing roller 23 and the support roller 24. The adjustment can be made by twitching, and the operation is simple and convenient.

[0026] A support roller 24 is embedded in the interior of the mounting plate 12, and a drive motor 30 is fixedly connected to the right side of the mounting plate 12. A transmission sprocket 29 is connected to the output end of the drive motor 30. The outer surface of the transmission sprocket 29 includes a traction chain 25. The traction chain 25 runs through the interior of the mounting plate 12. The outer surface of the traction chain 25 is also wrapped with a drive block 28. The clamping arm 22 and the riveted point 26 are connected by a rotating shaft. The bottom end of the cable 27 is movably connected to the drive block 28. The side of the drive block 28 is connected to the cable 27. The drive block 28 is provided with two groups, one of which is provided at the upper half of the traction chain 25, and the other is provided at the lower half of the traction chain 25. The distance between the two groups of drive blocks 28 and the mounting plate 12 is consistent. The top of the cable 27 is connected to the rivet point 26, and the rivet point 26 is movably connected to the surface of the clamping arm 22;

[0027] When clamping the ductile iron tubular casting 13, the length of the upper pressure roller 23 and the support roller 24 is adjusted so that the support roller 24 can completely penetrate the interior of the ductile iron tubular casting 13, and the support roller 24 is inserted into the interior of the ductile iron tubular casting 13 to support it. After the support roller 24 lifts the ductile iron tubular casting 13, the driving motor 30 starts to work, and the rotation of the driving motor 30 drives the rotation of the transmission sprocket 29. When the transmission sprocket 29 rotates, The traction chain 25 is driven to rotate. When the traction chain 25 rotates, the position of the driving block 28 changes. The driving block 28 pulls the cable 27, so that the clamping arm 22 deflects inward when being pulled. When the clamping arm 22 deflects inward, the upper pressure roller 23 on the clamping arm 22 can also move. The upper pressure roller 23 is pressed against the outer surface of the ductile iron tubular casting 13 through the movement of the clamping arm 22, thereby achieving the clamping of the ductile iron tubular casting 13.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping structure for heat treatment of ductile iron castings, comprising a support frame (11), characterized in that: A mounting plate (12) is mounted on the top of the support frame (11), and a clamping assembly (2) is arranged on the mounting plate (12); The clamping assembly (2) comprises a connecting shaft (21), the top end of the mounting plate (12) is connected to the connecting shaft (21), the surface of the connecting shaft (21) is connected to a clamping arm (22), the mounting plate (12) and the clamping arm (22) are rotatably connected via the connecting shaft (21), an upper pressure roller (23) is embedded in the interior of the clamping arm (22), a supporting roller (24) is embedded in the interior of the mounting plate (12), and a driving motor (30) is fixedly connected to the right side of the mounting plate (12). ), the output end of the driving motor (30) is connected to a transmission sprocket (29), the outer surface of the transmission sprocket (29) includes a traction chain (25), the traction chain (25) runs through the interior of the mounting plate (12), the outer surface of the traction chain (25) is also wrapped with a driving block (28), the side of the driving block (28) is connected to a cable (27), the top of the cable (27) is connected to a rivet point (26), and the rivet point (26) is movably connected to the surface of the clamping arm (22).

2. A clamping structure for heat treatment of ductile iron castings according to claim 1, characterized in that: The outer surface of the support roller (24) supports a ductile iron tubular cast iron piece (13), an upper pressure roller (23) is pressed onto the outer surface of the ductile iron tubular cast iron piece (13), and the ductile iron tubular cast iron piece (13) is fixed by the upper pressure roller (23) and the support roller (24).

3. A clamping structure for heat treatment of ductile iron castings according to claim 2, characterized in that: The upper surface of the upper pressing roller (23) is provided with an anti-skid structure, which is composed of a steel ring component with an arc surface. The steel ring with an arc surface is sleeved on the surface of the upper pressing roller (23) and remains fixedly connected. The arc-shaped steel rings are evenly distributed on the upper pressing roller (23).

4. A clamping structure for heat treatment of ductile iron castings according to claim 3, characterized in that: The two groups of upper pressure rollers (23) penetrate the interior of the clamping arm (22) and are movably connected to the clamping arm (22), and the support rollers (24) also penetrate the interior of the mounting plate (12) and are movably connected to the mounting plate (12).

5. The clamping structure for heat treatment of ductile iron castings according to claim 1, characterized in that: The clamping arm (22) and the riveting point (26) are connected via a rotating shaft, and the bottom end of the cable (27) is movably connected to the driving block (28).

6. A clamping structure for heat treatment of ductile iron castings according to claim 5, characterized in that: The driving blocks (28) are provided in two groups, one group of driving blocks (28) is provided at the upper part of the traction chain (25), and the other group of driving blocks (28) is provided at the lower part of the traction chain (25), and the distance between the two groups of driving blocks (28) and the mounting plate (12) is kept consistent.

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