High-precision steel pipe cold-drawing device

Abstract

The utility model discloses a high precision steel pipe cold drawing device relates to steel pipe cold drawing field, the high precision steel pipe cold drawing device comprises a support table, the upper end of the support table is provided with a movable clamping mechanism and a fixed clamping mechanism, the side end of the movable clamping mechanism and the side end of the fixed clamping mechanism are both connected with a connecting plate, the side end of a connecting plate of the fixed clamping mechanism is connected with a first motor, the movable clamping mechanism and the fixed clamping mechanism comprise outer frames, annular rails are connected into the outer frames, and gear rings are slidably connected into the annular rails. By arranging the movable clamping mechanism and the fixed clamping mechanism, the steel pipe can be conveniently placed and can be supported and restrained, so that the steel pipe stably moves in the clamping plate, the steel pipe is prevented from shaking in the cold-drawing moving process, and the situation that the dimensional precision of a final product is affected due to deviation of the steel pipe in the cold-drawing process is avoided; therefore, the steel pipe cold-drawing accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe cold drawing, in particular to a high-precision steel pipe cold drawing device. Background Art

[0002] As a commonly used pipe material, steel pipe has many processing methods, including cold-drawn steel pipe. Cold-drawn steel pipe is made by stretching the steel pipe at room temperature to reduce its diameter and increase its length, thereby obtaining a seamless steel pipe of the required specifications. Through cold drawing, steel pipe products with high dimensional accuracy, good surface quality and excellent mechanical properties can be obtained.

[0003] However, the existing steel pipe cold drawing device generally places the steel pipe on a rotating roller belt for movement during cold drawing of the steel pipe, which cannot fix the steel pipe. The steel pipe is generally long, and it is easy to shake when moving. The shaking may cause the steel pipe to deviate during the cold drawing process, thereby affecting the dimensional accuracy of the final product. In addition, the shaking may cause the steel pipe to be scrapped or defective during the cold drawing process, increasing production costs.

[0004] In order to solve this technical problem, the utility model proposes a high-precision steel pipe cold drawing device. Utility Model Content

[0005] The main purpose of the utility model is to provide a high-precision steel pipe cold drawing device, which can effectively solve the problems mentioned in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A high-precision steel pipe cold drawing device comprises a support table, wherein a movable clamping mechanism and a fixed clamping mechanism are provided on the upper end of the support table, the side ends of the movable clamping mechanism and the fixed clamping mechanism are both connected to a connecting plate, the side end of the connecting plate of the fixed clamping mechanism is connected to a No. 1 motor, the movable clamping mechanism and the fixed clamping mechanism comprise an outer frame, an annular track is connected to the inner side of the outer frame, a gear ring is slidably connected to the inner side of the annular track, a No. 2 motor is connected to the inner side of the outer frame, a gear is rotatably connected to the inner side of the outer frame, a tooth plate is provided in the outer frame, the side end of the tooth plate is connected to the clamping plate, and a rolling ball is connected to the inner side of the clamping plate.

[0008] Preferably, the movable clamping mechanism and the fixed clamping mechanism have the same internal structure, the connecting plates of the two are rotatably connected, and the No. 1 motor driving end is connected to the connecting plate of the movable clamping mechanism.

[0009] Preferably, the outer frames of the movable clamping mechanism and the fixed clamping mechanism can be docked, and after docking, the annular tracks of the two will be docked and connected, and the gear ring is semi-circular, and teeth are provided at its outer end.

[0010] Preferably, the driving end of the second motor is connected to a gear, the outer end of the outer frame is connected to a fixed track, the toothed plate is slidably connected in the fixed track, and the side end is provided with teeth, and the gear is respectively engaged with the gear ring and the toothed plate.

[0011] Preferably, the lower end of the fixed clamping mechanism is connected to a mounting seat, a side end of the mounting seat is provided with a mounting hole, and the mounting seat is connected to the upper end of the support table.

[0012] Preferably, a pushing hydraulic cylinder is provided at the side end of the support table, and two support seats are provided at the side end of the support table. The first mold and the second mold are respectively provided in the two support seats. The center lines of the pushing hydraulic cylinder, the first mold, the second mold, the movable clamping mechanism and the fixed clamping mechanism all coincide.

[0013] Preferably, an I-beam track is provided at the side end of the support seat, a mounting plate is connected to the lower end of the I-beam track, a mounting hole is provided in the mounting plate, and a cold-drawn car is provided at the upper end of the I-beam track.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In the utility model, by providing a movable clamping mechanism and a fixed clamping mechanism, it is not only possible to facilitate the placement of the steel pipe, but also to support and constrain the steel pipe so that it can move smoothly in the clamping plate. Specifically, the movable clamping mechanism is rotated open by the No. 1 motor, and then the steel pipe can be placed in the fixed clamping mechanism. Then, the movable clamping mechanism is closed, and the annular tracks of the two will be connected and connected. Starting the No. 2 motor will drive the gear ring to rotate, thereby driving all the gears to rotate, and the gears will drive all the tooth plates to move, thereby pushing the clamping plate to move, thereby clamping the steel pipe. Rolling balls are provided in the clamping plate, so that the steel pipe will be able to move in the clamping plate, so that the device can clamp and constrain the steel pipe to avoid shaking during the cold drawing process, and to avoid deviations of the steel pipe during the cold drawing process that affect the dimensional accuracy of the final product, thereby improving the accuracy of cold drawing of the steel pipe.

[0016] In the utility model, a first mold and a second mold are provided. The first mold is a rough mold with limited fineness. The first mold cold draws the steel pipe into a rough shape. The second mold is a fine mold. The steel pipe is precisely cold drawn in the second mold. The steel pipe can obtain precise dimensions through two cold drawing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a high-precision steel pipe cold drawing device of the utility model;

[0018] Figure 2This is a schematic diagram of the support structure of a high-precision steel pipe cold drawing device of the utility model;

[0019] Figure 3 This is a schematic diagram of the support table structure of a high-precision steel pipe cold drawing device of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of motor No. 1 of a high-precision steel pipe cold drawing device of the utility model;

[0021] Figure 5 This is a schematic diagram of the gear ring structure of a high-precision steel pipe cold drawing device of the utility model;

[0022] Figure 6 This is a schematic diagram of the annular track structure of a high-precision steel pipe cold drawing device of the utility model.

[0023] In the figure: 1. Support table; 2. Movable clamping mechanism; 3. Fixed clamping mechanism; 4. Connecting plate; 5. Motor No. 1; 6. Outer frame; 7. Annular track; 8. Gear ring; 9. Motor No. 2; 10. Gear; 11. Gear plate; 12. Clamping plate; 13. Rolling ball; 14. Fixed track; 15. Mounting seat; 16. Push hydraulic cylinder; 17. Support seat; 18. First mold; 19. Second mold; 20. I-beam track; 21. Cold drawing lathe. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1-6 As shown, a high-precision steel pipe cold drawing device includes a support table 1, and a movable clamping mechanism 2 and a fixed clamping mechanism 3 are provided at the upper end of the support table 1. The side ends of the movable clamping mechanism 2 and the fixed clamping mechanism 3 are connected with a connecting plate 4, and the connecting plates 4 of the two are rotatably connected. The side end of the connecting plate 4 of the fixed clamping mechanism 3 is connected to a No. 1 motor 5, and the driving end of the No. 1 motor 5 is connected to the connecting plate 4 of the movable clamping mechanism 2. For this reason, the No. 1 motor 5 can drive the movable clamping mechanism 2 to rotate, thereby opening the movable clamping mechanism 2 and the fixed clamping mechanism 3, so that the steel pipe can be placed conveniently. The lower end of the fixed clamping mechanism 3 is connected with a mounting seat 15, and the side end of the mounting seat 15 is provided with a mounting hole. The mounting seat 15 is connected to the upper end of the support table 1, and the mounting seat 15 is used to install the fixed clamping mechanism 3 to ensure its stability.

[0026] The movable clamping mechanism 2 has the same internal structure as the fixed clamping mechanism 3. The movable clamping mechanism 2 and the fixed clamping mechanism 3 include an outer frame 6, an annular track 7 is connected inside the outer frame 6, and a gear ring 8 is slidably connected inside the annular track 7. The gear ring 8 is semicircular and has teeth at its outer end. The outer frames 6 of the movable clamping mechanism 2 and the fixed clamping mechanism 3 can be docked, and after docking, the annular tracks 7 of the two will be docked and connected. At this time, the gear rings 8 of the two will be able to rotate in the annular tracks 7 of the two. A No. 2 motor 9 is connected inside the outer frame 6, and a gear 10 is connected to the outer frame 6 for rotation. The driving end of the No. 2 motor 9 is connected to the gear 10. A fixed track 14 is provided at the outer end of the outer frame 6, and a gear is provided inside the outer frame 6. Plate 11, the tooth plate 11 is slidably connected in the fixed track 14, the fixed track 14 is used to support the connected tooth plate 11, the side end of the tooth plate 11 is connected to the clamping plate 12, the gear 10 is respectively engaged with the gear ring 8 and the tooth plate 11, thereby starting the No. 2 motor 9 to drive the gear ring 8 to rotate in the annular track 7 through the gear 10, thereby driving all the gears 10 to rotate, and the gear 10 acts with the tooth plate 11 to drive the tooth plate 11 to move in the fixed track 14, and for this purpose, it will drive the clamping plate 12 to move, thereby clamping and constraining the steel pipe, and the inner side of the clamping plate 12 is connected with a rolling ball 13. The existence of the rolling ball 13 can make the steel pipe move in the clamping plate 12, so that the steel pipe can be cold-drawn normally.

[0027] A pushing hydraulic cylinder 16 is provided at the side end of the support table 1, and two supporting seats 17 are provided at the side end of the support table 1. A first mold 18 and a second mold 19 are respectively provided in the two supporting seats 17. The center lines of the pushing hydraulic cylinder 16, the first mold 18, the second mold 19, the movable clamping mechanism 2 and the fixed clamping mechanism 3 coincide with each other. In this way, after the steel pipe is clamped and constrained, its center line will also coincide with the center line of the first mold 18 and the second mold 19, so that the steel pipe will not be deflected during cold drawing. The first mold 18 is a rough mold with limited precision, and the second mold 19 has high precision. As we all know, the finer the The larger the mold, the more expensive it is. Therefore, the cost of the first mold 18 is lower than that of the second mold 19. When the steel pipe acts on the mold, it will also cause wear to the mold. At the same time, when the steel pipe is deformed at the beginning, its deformation is large and the force between the mold and the steel pipe is very large. After the rough shape is completed, the force between the steel pipe and the mold will be much smaller when it is plasticized again. Similarly, the steel pipe has greater wear on the first mold 18 and less wear on the second mold 19. For this reason, the service life of the second mold 19 is long, so the device usually only needs to replace the first mold 18, which not only ensures the accuracy of steel pipe processing, but also effectively reduces processing costs.

[0028] The pushing hydraulic cylinder 16 is used to push the steel pipe so that it can pass through the first mold 18 and the second mold 19 at the beginning. The side end of the support seat 17 is provided with an I-beam track 20. The lower end of the I-beam track 20 is connected to a mounting plate with a mounting hole in the mounting plate. The upper end of the I-beam track 20 is provided with a cold drawing car 21, which is used to pull the steel pipe out of the mold to complete the cold drawing process.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision steel pipe cold drawing device, comprising a support table (1), characterized in that: The upper end of the support table (1) is provided with a movable clamping mechanism (2) and a fixed clamping mechanism (3), and the side ends of the movable clamping mechanism (2) and the fixed clamping mechanism (3) are both connected to a connecting plate (4), and the side end of the connecting plate (4) of the fixed clamping mechanism (3) is connected to a No. 1 motor (5). The movable clamping mechanism (2) and the fixed clamping mechanism (3) include an outer frame (6), an annular track (7) is connected inside the outer frame (6), a gear ring (8) is slidably connected inside the annular track (7), a No. 2 motor (9) is connected inside the outer frame (6), a gear (10) is rotatably connected inside the outer frame (6), a tooth plate (11) is provided inside the outer frame (6), a clamping plate (12) is connected to the side end of the tooth plate (11), and a rolling ball (13) is connected inside the clamping plate (12).

2. The high-precision steel pipe cold drawing device according to claim 1, characterized in that: The movable clamping mechanism (2) and the fixed clamping mechanism (3) have the same internal structure, and the connecting plates (4) of the two are rotatably connected. The driving end of the No. 1 motor (5) is connected to the connecting plate (4) of the movable clamping mechanism (2).

3. The high-precision steel pipe cold drawing device according to claim 1, characterized in that: The outer frames (6) of the movable clamping mechanism (2) and the fixed clamping mechanism (3) can be docked, and after docking, the annular tracks (7) of the two will be docked and connected. The gear ring (8) is semi-circular, and its outer end is provided with teeth.

4. The high-precision steel pipe cold drawing device according to claim 1, characterized in that: The driving end of the second motor (9) is connected to the gear (10), the outer end of the outer frame (6) is connected to a fixed track (14), the tooth plate (11) is slidably connected in the fixed track (14), and the gear (10) is respectively engaged with the gear ring (8) and the tooth plate (11).

5. The high-precision steel pipe cold drawing device according to claim 1, characterized in that: The lower end of the fixed clamping mechanism (3) is connected to a mounting seat (15), a side end of the mounting seat (15) is provided with a mounting hole, and the mounting seat (15) is connected to the upper end of the support table (1).

6. The high-precision steel pipe cold drawing device according to claim 1, characterized in that: A pushing hydraulic cylinder (16) is provided at the side end of the support table (1), and two supporting seats (17) are provided at the side end of the support table (1). A first mold (18) and a second mold (19) are respectively provided in the two supporting seats (17). The center lines of the pushing hydraulic cylinder (16), the first mold (18), the second mold (19), the movable clamping mechanism (2) and the fixed clamping mechanism (3) all coincide.

7. The high-precision steel pipe cold drawing device according to claim 6, characterized in that: An I-steel track (20) is provided at the side end of the support seat (17), a mounting plate is connected to the lower end of the I-steel track (20), a mounting hole is provided in the mounting plate, and a cold drawing machine (21) is provided at the upper end of the I-steel track (20).

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