Hot piercing device for seamless tube processing

Abstract

The utility model discloses a kind of hot piercing devices for seamless pipe processing, belong to steel pipe processing field, including support ring body, the clamping mechanism is arranged on the outer wall of support ring body, the clamping mechanism is annular array distribution around the central axis of support ring body, the clamping mechanism includes adjusting assembly and limiting component, the adjusting assembly includes threaded transmission rod and the driving gear of threaded connection at the axis with threaded transmission rod, threaded transmission rod stem body is through driving gear and the outer wall of support ring body and extends to support ring body center, driving gear side is rotatably connected with driving mechanism, the utility model passes through the synchronous displacement of clamping assembly along the radial direction of support ring body, to realize the effective clamping of clamping mechanism to different diameter size steel pipe blank, so that equipment can be compatible with different specifications steel pipe, so different specifications clamping tooling does not need to be frequently replaced, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing technology, and more specifically, it relates to a hot piercing device for seamless pipe processing. Background Technology

[0002] Seamless steel pipe is a long strip of steel with a hollow cross-section and no seams around its perimeter. It is made from a single piece of metal and can be divided into hot-rolled seamless steel pipe and cold-rolled seamless steel pipe, depending on the production process. Due to its advantages such as high strength, strong pressure resistance and good toughness, it is widely used in machinery manufacturing, construction engineering and other fields, and is an indispensable basic material in industrial production.

[0003] Hot piercing is a key process in the production of seamless steel pipes. By heating a round steel billet to a high-temperature softened state, the softened billet is pushed forward by rotating rolls and interacts with the mandrel, causing the center of the billet to be gradually pierced to form a hollow tube.

[0004] During the hot piercing process of seamless steel pipes, when the billet is pushed by the rotating rolls, a clamping device is usually required. The clamping device needs to limit the billet to ensure that its axis is aligned with the center axis of the mandrel, so as to avoid eccentric piercing or uneven wall thickness of the tube due to billet deviation. In the current processing and production process, the diameter of steel pipe billets varies, which makes it impossible for the clamping device to make effective and timely adjustments when facing the clamping requirements of multiple types of steel pipe billets. Utility Model Content

[0005] To address the problems mentioned in the background section, this utility model provides the following technical solution:

[0006] A hot piercing device for seamless tube processing includes a support ring body. A clamping mechanism is provided on the outer wall of the support ring body. The clamping mechanism is arranged in a ring array around the central axis of the support ring body. The clamping mechanism includes an adjusting component and a limiting component. The adjusting component includes a threaded drive rod and a drive gear threadedly connected to the threaded drive rod at its axis. The threaded drive rod passes through the drive gear and the outer wall of the support ring body and extends towards the center of the support ring body. A driving mechanism is provided on one side of the drive gear. The driving mechanism includes a gear ring that meshes with the drive gear. When the gear ring rotates, it drives the drive gear to rotate, causing the clamping component at one end of the threaded drive rod to displace radially along the support ring body.

[0007] Furthermore, a through hole is provided at the center of the drive gear shaft, and the inner wall of the through hole is formed with an internal thread that matches the outer wall of the threaded transmission rod. A support seat is provided between the drive gear and the outer wall of the support ring. One end of the support seat is fixedly connected to the outer wall of the support ring, and the other end of the support seat is rotatably connected to the drive gear. Both the support seat and the outer wall of the support ring are provided with connecting holes for the threaded transmission rod to pass through.

[0008] Furthermore, an annular limiting protrusion is formed at one end of the drive gear near the support base, and an annular limiting groove corresponding to the annular limiting protrusion is formed on the inner sidewall surface of the support base.

[0009] Furthermore, a limiting plate is fixedly connected to one end of the threaded transmission rod near the center of the support ring. The two ends of the limiting plate are connected to the support ring through two sets of hinged first and second connecting rods. The end of the first connecting rod near the support ring is rotatably connected to the support ring, and the end of the second connecting rod near the limiting plate is rotatably connected to the limiting plate.

[0010] Furthermore, the limiting assembly includes two movable rods that are slidably connected to the limiting plate. Connecting arms are respectively provided on both sides of the movable rods. One end of the connecting arm is fixedly connected to the side wall of the limiting plate, and the other end of the connecting arm is movably connected to the movable rod with a limiting shaft. A limiting roller is rotatably connected to the outer wall of the limiting shaft.

[0011] Furthermore, a limiting collar is rotatably connected to one end of the connecting arm near the limiting shaft, one end of the limiting shaft is inserted into the limiting collar, and the limiting shaft and the limiting collar are slidably connected. A limiting seat is fixed to one end of the movable rod near the center of the support ring, and a connecting plate is fixedly connected to one end of the limiting shaft near the limiting seat. A connecting rod is fixedly connected between the two side walls of the limiting seat, the connecting rod passes through the connecting plate, and the connecting rod is rotatably connected to the connecting plate.

[0012] Furthermore, a spring is provided between the top end of the limiting seat and the bottom end of the limiting plate, and the spring is sleeved on the outer wall of the movable rod.

[0013] Furthermore, a limiting ring is fixedly connected to the outer wall of the support ring, and an annular limiting groove adapted to the outer wall of the limiting ring is opened on the inner wall of the gear ring, and the gear ring is rotatably connected to the limiting ring.

[0014] Furthermore, a motor is fixedly connected to the outer wall of the support ring, and a transmission gear is fixedly connected to the output end of the motor, the transmission gear being rotatably connected to the gear ring.

[0015] In summary, this utility model has the following beneficial effects:

[0016] This invention uses the rotation of a gear ring to drive the synchronous rotation of each set of drive gears, allowing the clamping components at one end of each set of threaded transmission rods to move synchronously along the radial direction of the support ring. This enables the clamping mechanism to effectively clamp steel pipe blanks of different diameters, making the equipment compatible with steel pipes of different specifications. It eliminates the need for frequent changes in clamping fixtures of different specifications, improving work efficiency. Through the soft contact between the limiting shafts of the limiting components and the outer wall of the steel pipe blank, it can automatically adjust according to changes in the diameter of the steel pipe, accurately balancing the clamping force and avoiding indentations and deformation on the surface of the steel pipe due to excessive clamping, or slippage and displacement caused by excessive looseness. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a three-dimensional schematic diagram of the clamping mechanism and the driving mechanism of this utility model;

[0020] Figure 3 This is a first-view schematic diagram of the clamping mechanism of this utility model;

[0021] Figure 4 This is a second-view schematic diagram of the clamping mechanism of this utility model;

[0022] Figure 5 This is a side view of the adjustment component of the clamping mechanism of this utility model;

[0023] Figure 6 This is a side view of the limiting component of the clamping mechanism of this utility model;

[0024] Figure 7 This is a three-dimensional schematic diagram of the drive mechanism of this utility model;

[0025] Figure 8 This is a three-dimensional schematic diagram of the drive gear and support base of this utility model.

[0026] In the picture:

[0027] 1. Support ring body; 2. Clamping mechanism; 201. Threaded transmission rod; 202. Drive gear; 203. Second connecting rod; 204. Limiting plate; 205. Movable rod; 206. Connecting arm; 207. Limiting shaft; 208. Limiting collar; 209. Limiting roller; 210. Spring; 211. Support seat; 212. First connecting rod; 213. Limiting seat; 214. Connecting plate; 3. Drive mechanism; 301. Motor; 302. Transmission gear; 303. Gear ring; 304. Annular limiting groove; 305. Limiting ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] Example:

[0030] Please see Figure 1-8 This utility model provides a technical solution: a hot piercing device for seamless tube processing, including a support ring 1. A clamping mechanism 2 is provided on the outer wall of the support ring 1. Multiple clamping mechanisms 2 can be provided, and each set of clamping mechanisms 2 is arranged in a ring array around the central axis of the support ring 1. The clamping mechanism 2 includes an adjustment component and a limiting component. The adjustment component includes a threaded transmission rod 201 and a drive gear 202 that is threadedly connected to the threaded transmission rod 201 at the shaft center. The threaded transmission rod 201 passes through the drive gear 202 and the outer wall of the support ring 1 and extends towards the center of the support ring 1. When the drive gear 202 rotates, it can drive the threaded transmission rod 201 to move radially along the support ring 1.

[0031] A drive mechanism 3 is provided on one side of the drive gear 202. The drive mechanism 3 includes a gear ring 303, which meshes with the drive gear 202. When the gear ring 303 rotates, it drives the drive gear 202 to rotate, causing the clamping assembly at one end of the threaded transmission rod 201 to move radially along the support ring body 1. By adjusting the distance between each set of clamping assemblies and the center of the support ring body 1, the clamping mechanism 2 can clamp steel pipe blanks of different diameters.

[0032] A through hole is provided at the shaft center of the drive gear 202. The inner wall of the through hole is formed with an internal thread that matches the outer wall of the threaded transmission rod 201. A support seat 211 is provided between the drive gear 202 and the outer wall of the support ring body 1. One end of the support seat 211 is fixedly connected to the outer wall of the support ring body 1, and the other end of the support seat 211 is rotatably connected to the drive gear 202. Both the support seat 211 and the outer wall of the support ring body 1 are provided with connecting holes for the threaded transmission rod 201 to pass through.

[0033] The drive gear 202 has an annular limiting protrusion at one end near the support base 211. The inner sidewall surface of the support base 211 has an annular limiting groove corresponding to the annular limiting protrusion. Through the mutual limiting between the annular limiting protrusion and the annular limiting groove, the drive gear 202 can rotate on the support base 211.

[0034] A limiting plate 204 is fixedly connected to one end of the threaded transmission rod 201 near the center of the support ring 1. The two ends of the limiting plate 204 are connected to the support ring 1 through two sets of hinged first connecting rods 212 and second connecting rods 203. The end of the first connecting rod 212 near the support ring 1 is rotatably connected to the support ring 1, and the end of the second connecting rod 203 near the limiting plate 204 is rotatably connected to the limiting plate 204. Through the limiting of the first connecting rod 212 and the second connecting rod 203, when the drive gear 202 rotates, the threaded transmission rod 201 can drive the limiting plate 204 to extend and retract radially along the support ring 1. When the limiting plate 204 begins to approach the drive gear 202, the included angle between the first connecting rod 212 and the second connecting rod 203 becomes smaller. When the limiting plate 204 begins to move away from the drive gear 202, the included angle between the first connecting rod 212 and the second connecting rod 203 becomes larger.

[0035] The limiting assembly includes two movable rods 205 slidably connected to the limiting plate 204. Connecting arms 206 are respectively provided on both sides of the movable rods 205. One end of the connecting arm 206 is fixedly connected to the side wall of the limiting plate 204, and the other end of the connecting arm 206 is movably connected to the movable rods 205 via a limiting shaft 207. A limiting roller 209 is rotatably connected to the outer wall of the limiting shaft 207. An included angle is formed between the two limiting rollers 209, which facilitates their contact with the outer wall of the steel pipe blank. The limiting rollers 209 of each set of clamping mechanism 2 limiting assemblies fit against the outer wall of the steel pipe blank from various angles. The steel pipe blank is stabilized by the extrusion force applied by the limiting rollers 209 from multiple angles simultaneously. Furthermore, the steel pipe blank can roll forward between each set of limiting rollers 209 through the rotational connection between the limiting rollers 209 and the limiting shaft 207.

[0036] One end of the connecting arm 206 near the limiting shaft 207 is rotatably connected to a limiting collar 208. One end of the limiting shaft 207 is inserted into the limiting collar 208, and the limiting shaft 207 and the limiting collar 208 are slidably connected. One end of the movable rod 205 near the center of the support ring 1 is fixed to a limiting seat 213. One end of the limiting shaft 207 near the limiting seat 213 is fixedly connected to a connecting plate 214. A connecting rod is fixedly connected between the two side walls of the limiting seat 213. The connecting rod passes through the connecting plate 214 and is rotatably connected to the connecting plate 214. Through the movable connection between the two ends of the limiting shaft 207 and the limiting seat 213 and the limiting collar 208, the included angle between the two sets of relatively set limiting shafts 207 can be effectively adjusted according to the curvature of the outer wall of the steel pipe billet.

[0037] A spring 210 is provided between the top of the limiting seat 213 and the bottom of the limiting plate 204. The spring 210 is sleeved on the outer wall of the movable rod 205. The two ends of the spring 210 are fixedly connected to the top of the limiting seat 213 and the bottom of the limiting plate 204, respectively. When the diameter of the steel pipe blank is large, the included angle between the two limiting shafts 207 becomes larger. At this time, the limiting seat 213 drives the movable rod 205 to move downward, and the spring 210 is stretched. When the diameter of the steel pipe blank is small, the included angle between the two sets of limiting shafts 207 becomes smaller. At this time, the limiting seat 213 drives the movable rod 205 to move upward, and the spring 210 is compressed. When the limiting assembly moves away from the steel pipe blank, the compressed or stretched spring 210 begins to drive the limiting seat 213 to complete the reset.

[0038] A limiting ring 305 is fixedly connected to the outer wall of the support ring 1. An annular limiting groove 304 adapted to the outer wall of the limiting ring 305 is opened on the inner wall of the gear ring 303. The gear ring 303 is rotatably connected to the limiting ring 305. A motor 301 is fixedly connected to the outer wall of the support ring 1. A transmission gear 302 is fixedly connected to the output end of the motor 301. The transmission gear 302 is rotatably connected to the gear ring 303. When the motor 301 starts, the transmission gear 302 starts to rotate and drives the gear ring 303 to rotate through its meshing relationship with the gear ring 303. When the gear ring 303 rotates, it can drive each set of drive gears 202 to rotate synchronously. The synchronous rotation of each set of drive gears 202 realizes the synchronous clamping and release of the steel pipe billet by the clamping end of the clamping mechanism 2.

[0039] Working principle: When the steel pipe billet is placed between each set of clamping mechanisms 2, the motor 301 is started. At this time, the output end of the motor 301 starts to drive the transmission gear 302 to rotate. The rotation of the transmission gear 302 drives the gear ring 303 to rotate. The rotation of the gear ring 303 drives each set of drive gears 202 to rotate synchronously. When each set of drive gears 202 rotates, the threaded transmission rod 201 can drive the limiting plate 204 to move radially along the support ring body 1. When the limiting rollers 209 on one side of each set of limiting plates 204 come into contact with the outer wall of the steel pipe billet from various angles, the steel pipe billet is stabilized by the extrusion force applied by the limiting rollers 209 from multiple angles. And through the rotational connection between the limiting rollers 209 and the limiting shaft 207, the steel pipe billet can roll forward between each set of limiting rollers 209.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A hot piercing device for seamless tube processing, comprising a support ring (1), characterized in that: The outer wall of the support ring (1) is provided with a clamping mechanism (2). The clamping mechanism (2) is arranged in a ring array around the central axis of the support ring (1). The clamping mechanism (2) includes an adjustment component and a limiting component. The adjustment component includes a threaded transmission rod (201) and a drive gear (202) that is threadedly connected to the threaded transmission rod (201) at the shaft center. The rod body of the threaded transmission rod (201) passes through the drive gear (202) and the outer wall of the support ring (1) and extends towards the center of the support ring (1). A drive mechanism (3) is provided on one side of the drive gear (202). The drive mechanism (3) includes a gear ring (303). The gear ring (303) meshes with the drive gear (202). When the gear ring (303) rotates, it drives the drive gear (202) to rotate, so that the clamping component at one end of the threaded transmission rod (201) is displaced radially along the support ring (1).

2. The hot piercing apparatus for seamless tube processing according to claim 1, characterized in that, A through hole is provided at the shaft center of the drive gear (202). The inner wall of the through hole is formed with an internal thread that matches the outer wall of the threaded transmission rod (201). A support seat (211) is provided between the drive gear (202) and the outer wall of the support ring body (1). One end of the support seat (211) is fixedly connected to the outer wall of the support ring body (1), and the other end of the support seat (211) is rotatably connected to the drive gear (202). Both the support seat (211) and the outer wall of the support ring body (1) are provided with connecting holes for the threaded transmission rod (201) to pass through.

3. The hot piercing apparatus for seamless tube processing according to claim 2, characterized in that, The drive gear (202) has an annular limiting protrusion at one end near the support base (211), and the inner sidewall surface of the support base (211) has an annular limiting groove corresponding to the annular limiting protrusion.

4. The hot piercing apparatus for seamless tube processing according to claim 2, characterized in that, The threaded transmission rod (201) is fixedly connected to a limiting plate (204) at one end near the center of the support ring body (1). The two ends of the limiting plate (204) are connected to the support ring body (1) through two sets of hinged first connecting rods (212) and second connecting rods (203). The first connecting rod (212) is rotatably connected to the support ring body (1) at one end near the support ring body (1), and the second connecting rod (203) is rotatably connected to the limiting plate (204) at one end near the limiting plate (204).

5. The hot piercing apparatus for seamless tube processing according to claim 4, characterized in that, The limiting assembly includes two movable rods (205) that are slidably connected to the limiting plate (204). Connecting arms (206) are respectively provided on both sides of the movable rods (205). One end of the connecting arm (206) is fixedly connected to the side wall of the limiting plate (204), and the other end of the connecting arm (206) is movably connected to the movable rod (205) with a limiting shaft (207). The outer wall of the limiting shaft (207) is rotatably connected to a limiting roller (209).

6. The hot piercing apparatus for seamless tube processing according to claim 5, characterized in that, The connecting arm (206) is rotatably connected to a limiting collar (208) near the limiting shaft (207). One end of the limiting shaft (207) is inserted into the limiting collar (208). The limiting shaft (207) and the limiting collar (208) are slidably connected. The movable rod (205) is fixed to a limiting seat (213) near the center of the support ring (1). A connecting plate (214) is fixedly connected to the end of the limiting shaft (207) near the limiting seat (213). A connecting rod is fixedly connected between the two side walls of the limiting seat (213). The connecting rod passes through the connecting plate (214). The connecting plate (214) and the connecting rod are rotatably connected.

7. The hot piercing apparatus for seamless tube processing according to claim 6, characterized in that, A spring (210) is provided between the top of the limiting seat (213) and the bottom of the limiting plate (204), and the spring (210) is sleeved on the outer wall of the movable rod (205).

8. The hot piercing apparatus for seamless tube processing according to claim 1, characterized in that, The outer wall of the support ring (1) is fixedly connected to a limiting ring (305), and the inner wall of the gear ring (303) is provided with an annular limiting groove (304) that is adapted to the outer wall of the limiting ring (305). The gear ring (303) and the limiting ring (305) are rotatably connected.

9. The hot piercing apparatus for seamless tube processing according to claim 8, characterized in that, A motor (301) is fixedly connected to the outer wall of the support ring (1), and a transmission gear (302) is fixedly connected to the output end of the motor (301). The transmission gear (302) is rotatably connected to the gear ring (303).

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