A die structure

Abstract

The utility model relates to a die structure, the utility model discloses a die seat and a pair of dies, and its characterized in that: a pair of dies is composed of four double -end dies, and the two heads of each double -end die are equipped with die entry and die tooth, and the die tooth includes a plurality of alternately arranged die tooth tip and die tooth bottom, and the both sides of double -end die are equipped with a die positioning surface each, the die seat is equipped with four die mounting positions, and each die mounting position is provided with die seat close -fitted surface and positioning pin, and the bottom surface of four double -end dies is installed on the four die mounting positions of die seat respectively, and one of the die positioning surfaces on double -end die and the positioning pin on the die seat cooperate, and one side surface is close to the die seat close -fitted surface of die seat, four double -end dies enclose the area for the pipe to be processed to carry out the area of threading, and the track of the die tooth of four double -end dies after rotation constitutes helical structure, the utility model has the advantages of reasonable structure design, long service life and cost saving.

Description

Technical Field

[0001] This utility model relates to a die structure and belongs to the field of threading machines. Background Technology

[0002] A threading machine is a device used during pipeline installation to process pipe threads. The threading die is a key component of the threading machine. Commonly available dies typically have a single-sided feed, which is not a well-designed structure, resulting in a short service life and affecting the overall performance of the threading machine. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings in the existing technology and to provide a die structure that has a reasonable structural design, long service life, cost savings, simple installation and convenient operation.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: the die structure includes a die holder and a set of dies. Its structural features are: the set of dies consists of four double-headed dies, each double-headed die having a die inlet and die teeth at both ends; the die teeth include several alternately arranged die tooth tips and die tooth bases; a die front angle is provided on the front of the die near the ends of the double-headed dies; and a die positioning surface is provided on each side of the double-headed dies; the die holder is provided with corresponding surfaces to the four double-headed dies. There are four die mounting positions, each with a die seat contact surface and a positioning pin. The bottom surfaces of the four double-headed dies are respectively mounted on the four die mounting positions of the die seat. One of the die positioning surfaces on the double-headed die mates with the positioning pin on the die seat. One side of the double-headed die is in close contact with the die seat contact surface of the die seat. The four double-headed dies form an area for threading the pipe to be processed. When threading the pipe to be processed, the rotation trajectory of the four double-headed dies forms a spiral structure.

[0005] Preferably, each double-ended die of this invention has a central fixing hole in the middle, and each double-ended die is installed on the die mounting position of the die holder by a hexagonal screw, wherein the hexagonal screw is connected to the central fixing hole of the double-ended die.

[0006] Preferably, each of the four double-headed teeth of this invention has a tooth number on its front side.

[0007] Preferably, the positioning pin of this utility model is tangent to the positioning surface of the double-headed die.

[0008] Compared with the prior art, this utility model has the following advantages and effects: each double-ended die is provided with a die inlet and a die tooth at both ends, which is efficient and cost-saving; the four double-ended dies are respectively installed in the four die mounting positions of the die holder, which is simple to install; when the die tooth tip at one end of the double-ended die is worn or damaged, loosen the hexagonal screw, reverse the double-ended die 180°, and then tighten the hexagonal screw, and the die tooth on the other end of the double-ended die can be used, which is convenient to operate and has a long service life. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the drawings used in the description of the embodiments and / 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.

[0010] Figure 1 This is an exploded structural diagram of the tooth structure in an embodiment of this utility model.

[0011] Figure 2 This is an enlarged structural schematic diagram of the first double-headed die in a set of dies according to an embodiment of this utility model.

[0012] Figure 3 This is an enlarged structural schematic diagram of the second double-headed tooth in a set of teeth according to an embodiment of this utility model.

[0013] Figure 4 This is an enlarged structural schematic diagram of the third double-headed die in a set of dies according to an embodiment of this utility model.

[0014] Figure 5 This is an enlarged structural schematic diagram of the fourth double-headed incisor in a set of incisors according to an embodiment of the present invention.

[0015] In the diagram: 1-locating pin; 2-hexagonal screw; 3-die seat; 4-double-ended die; 5-tube to be machined; 31-die seat contact surface; 41-die inlet; 42-die positioning surface; 43-center fixing hole; 44-die tooth tip; 45-die tooth base; 46-die number; 47-die front angle; 48-die front face. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0017] Example.

[0018] See Figures 1 to 5 The tooth structure in this embodiment includes a tooth base 3 and a set of teeth. The set of teeth consists of four double-headed teeth 4, and each of the four double-headed teeth 4 has a tooth number 46 on its front surface 48.

[0019] In this embodiment, each double-headed die 4 is provided with a die inlet 41 and a die tooth at both ends. The die tooth includes several alternately arranged die tooth tips 44 and die tooth bases 45. A die tooth front angle 47 is provided at the front face 48 of the die and near the two ends of the double-headed die 4. A central fixing hole 43 is provided in the middle of the double-headed die 4. A die tooth positioning surface 42 is provided on each side of the double-headed die 4.

[0020] In this embodiment, the die holder 3 has four die mounting positions corresponding to the four double-ended dies 4. Each die mounting position has a die holder contact surface 31 and a positioning pin 1. Each double-ended die 4 is mounted on a die mounting position of the die holder 3 by a hexagonal screw 2. The hexagonal screw 2 is connected to the central fixing hole 43 of the double-ended die 4, so that the bottom surfaces of the four double-ended dies 4 are respectively mounted on the four die mounting positions of the die holder 3. One of the die positioning surfaces 42 on the double-ended die 4 cooperates with the positioning pin 1 on the die holder 3, and the positioning pin 1 is tangent to the die positioning surface 42 of the double-ended die 4. One side of the double-ended die 4 is in close contact with the die holder contact surface 31 of the die holder 3.

[0021] In this embodiment, the four double-headed dies 4 form an area for threading the pipe 5 to be processed. When threading the pipe 5 to be processed, the trajectories of the four double-headed dies 4 after rotation form a spiral structure.

[0022] In this embodiment, a set of dies consists of four double-headed dies 4. The trajectory of the dies after the four double-headed dies 4 are rotated is spiral. On a double-headed die 4, there are two dies, two die entry points 41, two die positioning surfaces 42, and two die front angles 47. The central fixing hole 43 is a through hole for fixing the double-headed die 4.

[0023] In this embodiment, the double-headed die 4 with die number 46 has its front face 48 facing upwards. The bottom surface of the double-headed die 4 contacts the die holder 3 and is positioned by the positioning pin 1 being tangent to the die positioning surface 42. The side of the double-headed die 4 is in close contact with the die holder's contact surface 31. The hexagonal screw 2 passes through the central fixing hole 43 to fix the double-headed die 4 onto the die holder 3.

[0024] In this embodiment, when the die structure is in operation, the die holder 3 drives the four double-headed dies 4 to rotate, and the dies contact the tube 5 to be processed through the die inlet 41 and make infeed. The die tip 44 and the die bottom 45 thread the tube 5 to be processed. The iron filings generated during the processing are discharged through the die front angle 47.

[0025] When the tooth tip 44 at one end of the double-ended die 4 is worn or damaged, the hex screw 2 can be unscrewed, the double-ended die 4 can be reversed, and the tooth tip 44 at the other end of the double-ended die 4 that is not worn or damaged can be used to position it with the positioning pin 1 through the tooth positioning surface 42 on the other side of the double-ended die 4. The hex screw 2 then passes through the central fixing hole 43 to fix the double-ended die 4 to the tooth mounting position of the die holder 3, and then normal threading operation can be performed.

[0026] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A die structure, comprising a die holder (3) and a set of dies, characterized in that: A set of cutting teeth consists of four double-ended cutting teeth (4). Each double-ended cutting tooth (4) has a cutting tooth inlet (41) and cutting teeth at both ends. The cutting teeth include several alternately arranged cutting tooth tips (44) and cutting tooth bases (45). A cutting tooth front angle (47) is provided on each side of the cutting tooth front (48) and near the two ends of the double-ended cutting teeth (4). A cutting tooth positioning surface (42) is provided on each side of the double-ended cutting teeth (4). The cutting tooth seat (3) is provided with four cutting tooth mounting positions corresponding to the four double-ended cutting teeth (4). Each cutting tooth mounting position is provided with a cutting tooth seat contact surface (42). 31) and positioning pin (1), the bottom surfaces of the four double-headed dies (4) are respectively installed on the four die mounting positions of the die holder (3), one of the die positioning surfaces (42) on the double-headed die (4) cooperates with the positioning pin (1) on the die holder (3), and one of the sides on the double-headed die (4) is in close contact with the die holder contact surface (31) of the die holder (3); the four double-headed dies (4) form an area for threading the pipe (5) to be processed. When threading the pipe (5) to be processed, the trajectories of the four double-headed dies (4) after rotation form a spiral structure.

2. The tooth structure according to claim 1, characterized in that: Each double-ended die (4) has a central fixing hole (43) in the middle. Each double-ended die (4) is installed on the die mounting position of the die holder (3) by a hexagonal screw (2). The hexagonal screw (2) is connected to the central fixing hole (43) of the double-ended die (4).

3. The tooth structure according to claim 1, characterized in that: Each of the four double-headed teeth (4) has a tooth number (46) on its front side (48).

4. The die structure according to claim 1, characterized in that: The locating pin (1) is tangent to the locating surface (42) of the double-headed die (4).

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