Die structure for producing stainless steel seamless steel pipe

Abstract

The utility model relates to the technical field of mold structures, and provides a mold structure for producing stainless steel seamless steel tubes, which comprises a mounting seat and a pull rod, an outer mold seat is arranged in the mounting seat, an inner mold seat is arranged in the outer mold seat, the pull rod is arranged at the top of the inner mold seat, and a fixing structure is arranged at the top end of the mounting seat. By arranging the fixing structure, the outer mold base is moved to the position above the mounting base, the positioning block is aligned with the positioning groove, then the fixing base is placed above the mounting base, the fixing bolt is rotated, the fixing base and the mounting base are mutually fixed, and when the pull rod and the inner mold base work, through cooperation of the positioning block and the positioning groove, the outer mold base and the inner mold base can be fixed. According to the mold structure for producing the stainless steel seamless steel pipe, rotation of the outer mold base is avoided, meanwhile, the outer mold bases of different models can be replaced conveniently, the function that the mold structure is convenient to replace is achieved, and therefore the applicability of the mold structure for producing the stainless steel seamless steel pipe in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold structures, in particular to a mold structure for producing stainless steel seamless pipes. Background Art

[0002] Seamless steel pipe is formed by processing steel ingots or steel plates. It needs to pass through a mold to ensure the consistency of the shape and size of the pipe. The mold is a tool used for pressing, flanging, bending, shearing, punching and other processing operations. Therefore, in the production process of seamless steel pipes, a mold structure for producing stainless steel seamless steel pipes is required;

[0003] To this end, the patent with publication number CN202028680U discloses a seamless steel pipe rounding die, including a tapered inner die, characterized in that it also has an outer die sleeve that fits with the outer edge of the steel pipe. Since the steel pipe is rounded by using an outer die sleeve that fits with the outer edge of the steel pipe and a tapered inner die that matches the inner hole of the steel pipe, it can ensure that the outer edge of the steel pipe has good roundness and the inner hole is not deformed during the rounding process, and the product qualification rate is high;

[0004] Although the seamless steel pipe rounding die mentioned above can ensure that the outer edge of the steel pipe has good roundness and the inner hole does not deform during the rounding process, it is inconvenient to use the device to make steel pipes of different diameters, so that the outer mold sleeve is inconvenient to replace, which makes it less suitable for use. Utility Model Content

[0005] The utility model aims to provide a die structure for producing seamless stainless steel pipes, so as to solve the defect that the existing die structure for producing seamless stainless steel pipes is inconvenient to replace.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a mold structure for producing a stainless steel seamless steel pipe, comprising a mounting seat and a tie rod;

[0007] An outer mold base is arranged inside the mounting seat, an inner mold base is arranged inside the outer mold base, and a pull rod is arranged on the top of the inner mold base;

[0008] The top of the mounting seat is provided with a fixing structure, and the fixing structure includes a fixing seat, a fixing bolt, a positioning block and a positioning groove. The fixing seat is provided at the top of the mounting seat, and fixing bolts are evenly provided on both sides of the fixing seat. The top of the mounting seat is evenly provided with positioning grooves, and positioning blocks are provided inside the positioning grooves.

[0009] A heat dissipation structure is arranged inside the outer mold base.

[0010] When using the device, by providing a fixed structure, the device can be easily replaced, thereby improving the applicability of the mold structure for producing stainless steel seamless pipes during use; by providing a heat dissipation structure, the device can be easily dissipated, thereby improving the stability of the mold structure for producing stainless steel seamless pipes during use.

[0011] Preferably, the top end of the fixing bolt extends to the inside of the mounting seat and is threadedly connected to the mounting seat, and the fixing bolts are symmetrically distributed on both sides of the fixing seat. Move the outer mold seat to the top of the mounting seat, align the positioning block with the positioning groove, and then place the fixing seat on the top of the mounting seat, rotate the fixing bolt, and fix the fixing seat and the mounting seat to each other. When the pull rod and the inner mold seat are working, the outer mold seat is prevented from rotating through the cooperation of the positioning block and the positioning groove, and it is convenient to replace different models of outer mold seats.

[0012] Preferably, the inner side wall of the positioning block is fixedly connected to the outer side wall of the outer mold base, and the positioning blocks are distributed at equal intervals on the outer side of the outer mold base.

[0013] Preferably, the heat dissipation structure includes a mold cavity, an outlet groove, a through hole and a heat dissipation hole. The outer mold base is provided with a mold cavity, the bottom end of the mold cavity is provided with an outlet groove, both sides of the bottom of the outer mold base are evenly provided with through holes, and both sides of the through holes are evenly provided with heat dissipation holes. The outlet groove effectively prevents the outer surface of the steel pipe from being scratched during extrusion, thereby improving the quality of the steel pipe. When the pull rod and the inner mold base are working, they will rub inside the mold cavity, so that heat will be generated inside the outer mold base. Under the action of the outlet groove, the heat of the outer mold base is discharged from the heat dissipation hole through the through hole.

[0014] Preferably, the through hole is connected to the heat dissipation hole, and the heat dissipation holes are symmetrically distributed on both sides of the through hole.

[0015] Preferably, an external thread is provided on the outer wall of the bottom of the pull rod, and an external thread is provided on the inner wall of the top of the inner mold base.

[0016] Preferably, the pull rod and the inner mold base are connected by threaded engagement, and one end of the pull rod extends to the top of the mounting seat.

[0017] The utility model provides a mold structure for producing a stainless steel seamless steel pipe, which has the advantages of:

[0018] By providing a fixing structure, the outer die base is moved to the top of the mounting base, the positioning block is aligned with the positioning groove, and then the fixing base is placed on the mounting base, and the fixing bolt is rotated to fix the fixing base and the mounting base to each other. When the pull rod and the inner die base are working, the outer die base is prevented from rotating by the cooperation of the positioning block and the positioning groove, and different types of outer die bases are easily replaced, thereby realizing the function of easy replacement of the device, thereby improving the applicability of the mold structure used for producing stainless steel seamless pipes when in use;

[0019] By providing a heat dissipation structure, the outlet groove can effectively prevent the outer surface of the steel pipe from being scratched during extrusion, thereby improving the quality of the steel pipe. When the pull rod and the inner die base are working, they will rub inside the mold cavity, causing heat to be generated inside the outer die base. Under the action of the outlet groove, the heat of the outer die base is discharged from the heat dissipation holes through the through holes, thereby realizing the function of facilitating heat dissipation of the device, thereby improving the stability of the mold structure for producing stainless steel seamless steel pipes during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model in a top view;

[0023] Figure 4 It is a side cross-sectional structural schematic diagram of the utility model;

[0024] Figure 5 For the utility model Figure 4 Enlarged structural diagram at A in the middle.

[0025] Explanation of the reference numerals in the figure: 1. Mounting seat; 2. Pull rod; 3. Fixing structure; 301. Fixing seat; 302. Fixing bolt; 303. Positioning block; 304. Positioning groove; 4. Inner mold seat; 5. Outer mold seat; 6. Heat dissipation structure; 601. Mold cavity; 602. Exit groove; 603. Through hole; 604. Heat dissipation hole. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-Figure 5 The utility model provides a mold structure for producing seamless stainless steel pipes, including a mounting seat 1 and a tie rod 2. An outer die seat 5 is arranged inside the mounting seat 1, an inner die seat 4 is arranged inside the outer die seat 5, a tie rod 2 is arranged on the top of the inner die seat 4, a fixing structure 3 is arranged on the top of the mounting seat 1, and the fixing structure 3 includes a fixing seat 301, a fixing bolt 302, a positioning block 303 and a positioning groove 304. The fixing seat 301 is arranged on the top of the mounting seat 1, and fixing bolts 302 are evenly arranged on both sides of the fixing seat 301. The top of the mounting seat 1 is evenly provided with positioning blocks 303 and positioning grooves 304. Groove 304, the interior of the positioning groove 304 is provided with a positioning block 303, the top end of the fixing bolt 302 extends to the interior of the mounting base 1 and is threadedly connected to the mounting base 1, the fixing bolts 302 are symmetrically distributed on both sides of the fixing base 301, the inner wall of the positioning block 303 is fixedly connected to the outer wall of the outer mold base 5, the positioning blocks 303 are evenly distributed on the outer side of the outer mold base 5, the outer wall of the bottom of the pull rod 2 is provided with an external thread, the inner wall of the top of the inner mold base 4 is provided with an external thread, the pull rod 2 and the inner mold base 4 are connected by threaded engagement, and one end of the pull rod 2 extends to the top of the mounting base 1.

[0028] Reference Figure 1 and Figure 2-3 As shown, the outer mold base 5 is moved to the top of the mounting base 1, the positioning block 303 is aligned with the positioning groove 304, and then the fixed base 301 is placed on the mounting base 1, and the fixing bolt 302 is rotated to fix the fixed base 301 and the mounting base 1 to each other. When the pull rod 2 and the inner mold base 4 are working, the outer mold base 5 is prevented from rotating through the cooperation of the positioning block 303 and the positioning groove 304, and at the same time, it is convenient to replace different types of outer mold bases 5.

[0029] A heat dissipation structure 6 is arranged inside the outer mold base 5, and the heat dissipation structure 6 includes a mold cavity 601, an outlet groove 602, a through hole 603 and a heat dissipation hole 604. A mold cavity 601 is opened inside the outer mold base 5, and an outlet groove 602 is arranged at the bottom of the mold cavity 601. Through holes 603 are evenly arranged on both sides of the bottom of the outer mold base 5, and heat dissipation holes 604 are evenly arranged on both sides of the through hole 603. The through hole 603 and the heat dissipation holes 604 are connected, and the heat dissipation holes 604 are symmetrically distributed on both sides of the through hole 603.

[0030] Reference Figure 1 and Figure 2-5 As shown, the outlet groove 602 effectively prevents the outer surface of the steel pipe from being scratched during extrusion, thereby improving the quality of the steel pipe. When the pull rod 2 and the inner mold base 4 are working, they will rub inside the mold cavity 601, causing heat to be generated inside the outer mold base 5. Under the action of the outlet groove 602, the heat of the outer mold base 5 is discharged from the heat dissipation hole 604 through the through hole 603.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mold structure for producing a stainless steel seamless pipe, comprising a mounting seat (1) and a tie rod (2); Features: An outer mold base (5) is arranged inside the mounting base (1), an inner mold base (4) is arranged inside the outer mold base (5), and a pull rod (2) is arranged on the top of the inner mold base (4); The top of the mounting seat (1) is provided with a fixing structure (3), the fixing structure (3) comprising a fixing seat (301), a fixing bolt (302), a positioning block (303) and a positioning groove (304); the fixing seat (301) is provided at the top of the mounting seat (1), fixing bolts (302) are evenly provided on both sides of the fixing seat (301), the top of the mounting seat (1) is evenly provided with positioning grooves (304), and positioning blocks (303) are provided inside the positioning grooves (304); A heat dissipation structure (6) is provided inside the outer mold base (5).

2. A mold structure for producing a stainless steel seamless pipe according to claim 1, characterized in that: The top end of the fixing bolt (302) extends into the interior of the mounting seat (1) and is threadedly connected to the mounting seat (1), and the fixing bolts (302) are symmetrically distributed on both sides of the fixing seat (301).

3. The mold structure for producing seamless stainless steel pipe according to claim 1, characterized in that: The inner side wall of the positioning block (303) is fixedly connected to the outer side wall of the outer mold base (5), and the positioning blocks (303) are distributed at equal intervals on the outer side of the outer mold base (5).

4. A mold structure for producing a stainless steel seamless pipe according to claim 1, characterized in that: The heat dissipation structure (6) comprises a mold cavity (601), an outlet groove (602), a through hole (603) and a heat dissipation hole (604); the mold cavity (601) is provided inside the outer mold base (5); the bottom end of the mold cavity (601) is provided with an outlet groove (602); through holes (603) are evenly provided on both sides of the bottom of the outer mold base (5); and heat dissipation holes (604) are evenly provided on both sides of the through hole (603).

5. A mold structure for producing a stainless steel seamless pipe according to claim 4, characterized in that: The through hole (603) is connected to the heat dissipation hole (604), and the heat dissipation holes (604) are symmetrically distributed on both sides of the through hole (603).

6. A mold structure for producing a stainless steel seamless pipe according to claim 1, characterized in that: An external thread is arranged on the outer wall at the bottom of the pull rod (2), and an external thread is arranged on the inner wall at the top of the inner mold base (4).

7. The mold structure for producing seamless stainless steel pipe according to claim 1, characterized in that: The pull rod (2) and the inner mold base (4) are connected by threaded engagement, and one end of the pull rod (2) extends to the top of the mounting base (1).

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