Steel pipe extrusion forming die

Abstract

The utility model relates to the technical field of steel pipe forming, in particular to a steel pipe extrusion forming die which comprises a machine base, a heat extruding machine arranged at the top of the machine base, a steel pipe produced by extrusion arranged at the discharging end of the heat extruding machine and a supporting and guiding mechanism used for avoiding eccentricity of the steel pipe. One end of the guide rod continuously penetrates into the connecting frame by rotating the guide rod, the connecting plate is pushed to approach the connecting frame through the baffle ring, the included angle between the second connecting rod and the connecting plate and the included angle between the first connecting rod and the connecting frame are continuously enlarged, and then the supporting plate is driven to radially move until the inner wall size of the steel pipe is adjusted. A motor drives a lead screw to rotate to drive a sliding plate to move and a guide rod to move so as to guide the steel pipes to move, and it is guaranteed that the steel pipes cannot be eccentric in the follow-up treatment process under the condition that steel pipe machining is not affected; stability is improved, error accumulation is reduced, and machining precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe forming technology, and in particular to a steel pipe extrusion forming mold. Background Technology

[0002] According to the patent document with publication number CN217251644U, the patent document describes a steel pipe forming conveyor that extrudes molten material from a forming mold to form a steel pipe. The steel pipe is then cooled in a cooling box. After that, the steel pipe passes through a guide concave wheel, enters the mounting frame and then enters the mounting ring. The seamless steel pipe then passes through the first and second limiting friction plates in sequence to perform surface grinding and correction treatment on the seamless steel pipe, thereby improving the forming quality of the seamless steel pipe.

[0003] The patent document describes how, after the steel pipe is extruded from the forming mold, it undergoes subsequent external processing such as cooling, conveying, and grinding to meet different usage requirements. However, due to the precision limitations of the extrusion equipment, there may be slight errors in the steel pipe output. These errors will gradually accumulate during subsequent external processing, eventually leading to eccentricity of the steel pipe. Eccentricity of the steel pipe will seriously affect its size and performance. Utility Model Content

[0004] The purpose of this utility model is to provide a steel pipe extrusion molding die to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A steel pipe extrusion forming die includes a base, a hot extruder is provided on the top of the base, a steel pipe produced by extrusion is provided at the discharge end of the hot extruder, and a support and guiding mechanism is also included to prevent the steel pipe from being eccentric.

[0007] The support and guiding mechanism includes a lead screw located at the rear of the machine base. A motor is fixedly installed at the input end of the lead screw. A sliding plate is sleeved on the lead screw. The bottom of the sliding plate is slidably connected to the top of the machine base. A guide rod is threadedly connected to one side of the top of the sliding plate. A connecting frame is threadedly connected to one end of the guide rod near the hot extruder. A connecting plate is provided on the other side of the connecting frame. Four support plates are provided on the outside of the connecting frame. A first connecting rod is hinged between the connecting frame and the support plates. A second connecting rod is hinged between the connecting plate and the support plates.

[0008] Preferably, a cooling box is provided on one side of the hot extrusion press, a fan is connected to the top of the cooling box, two pressure rollers are provided on one side of the cooling box, a support frame is fixed on the top of the machine base, and the two pressure rollers are rotatably connected in the support frame.

[0009] Preferably, a grinding ring is provided on one side of each of the two pressure rollers, and a ring scraper is fixed on one side of the grinding ring.

[0010] Preferably, one end of the guide rod extends into the connecting frame and passes sequentially through the grinding ring, between the two pressure rollers, and the cooling box.

[0011] Preferably, the connecting plate is fitted onto the guide rod, and a retaining ring fixed to the guide rod is provided on the other side of the connecting plate.

[0012] Preferably, a limiting block is fixed on the side of the support plate near the connecting frame, and a limiting frame that cooperates with the limiting block is fixed on the outer wall of the connecting frame.

[0013] The beneficial effects compared with the existing technology are as follows: By rotating the guide rod, one end of the guide rod is continuously inserted into the connecting frame. The retaining ring pushes the connecting plate closer to the connecting frame, so that the angle between the second connecting rod and the connecting plate and the angle between the first connecting rod and the connecting frame are continuously expanded. This drives the support plate to move radially until it is adjusted to the inner wall size of the steel pipe, so that the support plate can adapt to steel pipes of different sizes and thus stabilize the head of the steel pipe. The motor drives the lead screw to rotate, which in turn drives the sliding plate and the guide rod to move, thereby guiding the movement of the steel pipe. Without affecting the processing of the steel pipe, it ensures that the steel pipe will not be eccentric during subsequent processing, increasing stability, reducing error accumulation, and improving processing accuracy. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram of the structure of a steel pipe extrusion molding die according to the present invention;

[0016] Figure 2 This is a schematic diagram of the support and guiding mechanism of a steel pipe extrusion molding die according to the present invention;

[0017] Figure 3 This is a cross-sectional view of the support and guiding mechanism of the steel pipe extrusion molding die described in this utility model;

[0018] Figure 4 This is a schematic diagram of the guide rod of a steel pipe extrusion molding die according to this utility model.

[0019] Figure 5 This is a diagram showing the connection plate and connection frame of a steel pipe extrusion molding die according to this utility model.

[0020] Figure 6 This is a diagram showing the guide rod and mold assembly of a steel pipe extrusion molding die according to this utility model.

[0021] The annotations in the attached figures are explained as follows:

[0022] 1. Machine base; 2. Hot extrusion press; 3. Cooling box; 4. Pressure roller; 5. Grinding ring; 6. Steel pipe; 7. Support and guide mechanism; 701. Lead screw; 702. Sliding plate; 703. Guide rod; 704. Connecting frame; 705. Support plate; 706. First connecting rod; 707. Second connecting rod; 708. Connecting plate; 709. Motor. Detailed Implementation

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] like Figures 1-5 As shown, a steel pipe extrusion molding die includes a base 1, a hot extruder 2 is provided on the top of the base 1, a steel pipe 6 generated by extrusion is provided at the discharge end of the hot extruder 2, and a support and guiding mechanism 7 is also included to prevent the steel pipe 6 from being eccentric.

[0026] In this embodiment: the support and guide mechanism 7 includes a lead screw 701, which is located behind the machine base 1. A motor 709 is fixedly installed at the input end of the lead screw 701. A sliding plate 702 is sleeved on the lead screw 701. The bottom of the sliding plate 702 is slidably connected to the top of the machine base 1. A guide rod 703 is threadedly connected to one side of the top of the sliding plate 702. A connecting frame 704 is threadedly connected to one end of the guide rod 703 near the hot extruder 2. A connecting plate 708 is provided on the other side of the connecting frame 704. The connecting plate 708 is sleeved on the guide rod 703. A retaining ring is fixed on the other side of the connecting plate 708 and fixed to the guide rod 703. Four support plates 705 are provided on the outer side of the connecting frame 704. A limit block is fixed on the side of the support plate 705 near the connecting frame 704. A matching limit block is fixed on the outer wall of the connecting frame 704. The limiting frame is connected by a first connecting rod 706 hinged between the connecting frame 704 and the support plate 705, and a second connecting rod 707 hinged between the connecting plate 708 and the support plate 705. By rotating the guide rod 703, one end of the guide rod 703 is continuously pushed into the connecting frame 704. The retaining ring pushes the connecting plate 708 closer to the connecting frame 704, so that the angle between the second connecting rod 707 and the connecting plate 708 and the angle between the first connecting rod 706 and the connecting frame 704 are continuously increased. This causes the support plate 705 to move radially until it is adjusted to the inner wall size of the steel pipe 6, so that the support plate 705 can adapt to steel pipes 6 of different sizes and thus stabilize the head of the steel pipe 6. The motor 709 drives the lead screw 701 to rotate, which in turn drives the sliding plate 702 and the guide rod 703 to move, thereby guiding the movement of the steel pipe 6.

[0027] In this embodiment: A cooling box 3 is provided on one side of the hot extruder 2, and a fan is connected to the top of the cooling box 3. Two pressure rollers 4 are provided on one side of the cooling box 3. A support frame is fixed on the top of the machine base 1. The two pressure rollers 4 are rotatably connected in the support frame. A grinding ring 5 is provided on one side of the two pressure rollers 4. An annular scraper is fixed on one side of the grinding ring 5. One end of the guide rod 703 extends into the connecting frame 704 and passes through the grinding ring 5, the two pressure rollers 4 and the cooling box 3 in sequence. The raw material is extruded into a steel pipe 6 by the 300t horizontal hot extruder 2. The formed steel pipe 6 is cooled by the cooling box 3. The shape of the steel pipe 6 is corrected by the two pressure rollers 4. The impurities on the outer wall of the steel pipe 6 are removed by the scraper on the grinding ring 5.

[0028] Working principle: Rotating the guide rod 703 causes one end of the guide rod 703 to continuously penetrate into the connecting frame 704. The retaining ring pushes the connecting plate 708 closer to the connecting frame 704, causing the angle between the second connecting rod 707 and the connecting plate 708 and the angle between the first connecting rod 706 and the connecting frame 704 to continuously expand. As a result, the support plate 705 moves radially until it is adjusted to the inner wall size of the formed steel pipe 6. The raw material is poured into the hot extruder 2 for heating and extrusion to form the steel pipe 6. The motor 709 is started to drive the lead screw 701 to rotate, which in turn drives the sliding plate 702 and the guide rod 703 to move, thereby guiding the steel pipe 6 to move into the cooling box 3 to cool the formed steel pipe 6. Then, the two pressure rollers 4 correct the shape of the steel pipe 6. Finally, the scraper on the grinding ring 5 removes impurities from the outer wall of the steel pipe 6.

[0029] 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 merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A steel pipe extrusion molding die, comprising a base (1), wherein a hot extruder (2) is provided on the top of the base (1), and a steel pipe (6) generated by extrusion is provided at the discharge end of the hot extruder (2), characterized in that: It also includes a support and guidance mechanism (7) for preventing the steel pipe (6) from becoming eccentric; The support and guide mechanism (7) includes a lead screw (701), which is located on the rear side of the machine base (1). A motor (709) is fixedly installed at the input end of the lead screw (701). A sliding plate (702) is sleeved on the lead screw (701). The bottom of the sliding plate (702) is slidably connected to the top of the machine base (1). A guide rod (703) is threadedly connected to one side of the top of the sliding plate (702). A connecting frame (704) is threadedly connected to one end of the guide rod (703) near the hot extruder (2). A connecting plate (708) is provided on the other side of the connecting frame (704). Four support plates (705) are provided on the outside of the connecting frame (704). A first connecting rod (706) is hinged between the connecting frame (704) and the support plate (705). A second connecting rod (707) is hinged between the connecting plate (708) and the support plate (705).

2. The steel pipe extrusion die according to claim 1, characterized in that: The hot extruder (2) is provided with a cooling box (3) on one side, and a fan is connected to the top of the cooling box (3). Two pressure rollers (4) are provided on one side of the cooling box (3). A support frame is fixed to the top of the machine base (1), and the two pressure rollers (4) are rotatably connected in the support frame.

3. The steel pipe extrusion molding die according to claim 2, characterized in that: A grinding ring (5) is provided on one side of each of the two pressure rollers (4), and an annular scraper is fixed on one side of the grinding ring (5).

4. The steel pipe extrusion die according to claim 3, characterized in that: The guide rod (703) extends into the connecting frame (704) and passes sequentially through the grinding ring (5), between the two pressure rollers (4), and the cooling box (3).

5. The steel pipe extrusion die according to claim 1, characterized in that: The connecting plate (708) is sleeved on the guide rod (703), and a retaining ring fixed on the guide rod (703) is provided on the other side of the connecting plate (708).

6. The steel pipe extrusion die according to claim 1, characterized in that: A limiting block is fixed on the side of the support plate (705) near the connecting frame (704), and a limiting frame that cooperates with the limiting block is fixed on the outer wall of the connecting frame (704).

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