A threading machine capable of processing standard taper pipe threads

Abstract

The present invention relates to the technical field of fire-fighting water pipes and gas pipelines, and discloses a machine capable of processing standard taper pipe threads, comprising a machine, a self-resetting forward and backward switch fixedly installed on one side of the top of the machine, a first motor provided inside the machine, and a reducer fixedly connected to the first motor. The machine capable of processing standard taper pipe threads, through the four-jaw chuck, is always fixed with four standard taper threaded pipe special dies. Only when the thread mouth length reaches the end of the preset length, the four dies are opened at the same time and the threading is completed. The front and rear tapers of the outer thread of the threaded pipe processed in this way only depend on the standard taper of the four dies. The front and rear taper change standard of the thread mouth is such that when the outer thread is connected to the pipe joint, the front and rear ends of the processed outer thread can fully engage with the inner thread of the pipe joint to achieve tight connection. After being connected and installed with the pipe joint, the interface is more resistant to high pressure and is not prone to water leakage, air leakage and other quality problems.

Description

Technical Field

[0001] The invention relates to the technical field of fire-fighting water pipes and gas pipelines, in particular to a threading machine capable of processing standard taper pipe threads. Background Art

[0002] Fire hose refers to the pipe material used for firefighting, connecting firefighting equipment and supplies, and transporting firefighting water, gas, or other media. Due to special requirements, fire hose thickness and material requirements are also specific. The exterior of the pipe needs to be painted red to transport firefighting water. Fire hose requires threading during installation.

[0003] Gas pipelines are used for gas transportation and are needed in urban residential buildings and public places. Since natural gas is a flammable and explosive gas, the connection of gas pipelines requires high standards and high requirements for construction, and yellow paint is sprayed on the outside of the pipeline. Gas pipelines need to be processed with a threading machine during connection and installation.

[0004] Conventional pipe threading machines use a pulley-down mechanism to control the opening of the four dies during threading. During the threading process, a pulley on the die head, which is equipped with four tapered pipe thread dies, must be mounted on top of an oblique iron block on a carriage. While one die is threading, the other pulley on the die head slides downward, slowly opening the four dies together until the pulley slides to the bottom of the oblique iron block, fully opening the four dies and completing the threading. This method results in a very large taper on the threaded end. After connection with the internal thread of a pipe fitting, the threaded end does not fully engage with the internal thread of the fitting, resulting in a small outer diameter at the front end and insufficient thread fullness at the rear end. This requires a large amount of sealing material for sealing. If the water or air pressure in the pipe is slightly high, leakage is likely to occur at the connection between the threaded end and the fitting. To standardize the taper of the finished pipe threaded end, a pipe threading machine capable of producing standard tapers is proposed. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the shortcomings of the existing technology, the present invention provides a threading machine that can process standard taper pipe threads, which has the advantages of processing standard taper pipes and solves the problem of leakage risk at the connection between the thread end and the pipe joint.

[0007] (2) Technical solution

[0008] In order to achieve the purpose of the above-mentioned good fixing effect, the present invention provides the following technical solutions: a threading machine capable of processing standard taper pipe threads, comprising a threading machine, a self-resetting reversing switch fixedly installed on one side of the top of the threading machine, a first motor provided inside the threading machine, the first motor fixedly connected to a reducer, the output shaft of the reducer fixedly connected to the top three-jaw chuck body, the back of the three-jaw chuck body fixedly connected to a chuck seat, the top of the threading machine fixedly connected to a V-shaped bracket, a roller installed inside the V-shaped bracket, and a roller fixedly installed below the V-shaped bracket. There is a triangular handle with a square center rod inside the triangular handle, a length control bracket is fixedly installed on one side of the three-jaw chuck body, a moving rod is provided at the front end of the length control bracket, a length scale is provided on the top of the length control bracket, an elastic oblique tongue is fixedly installed at the front end of the moving rod, a locking handle is provided at the tail end of the moving rod, a limited stop rod is provided opposite to the moving rod, a first claw body is fixedly installed on the front of the three-jaw chuck body, a claw tip is provided on the top of the first claw body, a four-jaw chuck body is provided directly opposite the three-jaw chuck body, and the four-jaw chuck The front of the disk is provided with a second claw body, the top of the second claw body is fixedly installed with a tapered pipe thread die, the side of the second claw body is provided with a scale needle, the front of the four-jaw chuck body is provided with a pipe diameter scale plate, the back of the four-jaw chuck body is fixedly installed with a large compass, the outer arc surface of the large compass is provided with a protruding block reset handle and a reset handle, the protruding block reset handle is provided with a protruding block reset handle tongue, the back of the large compass is fixedly connected to the main positioning disk, the outer arc surface of the main positioning disk is fixedly installed with a main positioning block and a small positioning block, the outer arc surface of the main positioning disk A groove is milled, and the groove surrounds the outer circular arc surface of the entire positioning plate. A main positioning block and a small positioning block are provided in the groove. The main positioning block is adapted to be equipped with an elastic clamp. A main positioning block fixing screw is installed on the side of the main positioning block. A positioning block interconnecting rod is fixed between the main positioning block and the small positioning block. The main positioning plate is fixedly connected to the output shaft of the second motor through a speed regulating reducer. A slide is installed below the speed regulating reducer, and a main motor switch is provided on one side of the slide. A support shaft is passed through the hole of the slide, and a triangular feed handle is installed directly below the slide.

[0009] Preferably, the output shaft of the reducer is fixedly connected to the square hole of the umbrella gear in the three-jaw chuck body.

[0010] Preferably, the number of the rollers is two groups.

[0011] (3) Beneficial effects

[0012] Compared with the prior art, the present invention provides a threading machine capable of processing standard taper pipe threads, which has the following beneficial effects:

[0013] 1. This machine can process standard taper pipe threads. The four special dies for standard taper threaded pipes on the four-jaw chuck are always fixed. Only when the thread length reaches the preset length, the four dies will open at the same time and the threading is completed. The front and rear tapers of the outer threads of the threaded pipe processed in this way only depend on the standard taper of the four dies. The front and rear ends of the outer threads processed when docking with the pipe joint can fully engage with the inner threads of the pipe joint to achieve tight docking. After being connected and installed with the pipe joint, the interface is more resistant to high pressure and not prone to water leakage, air leakage and other quality problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0016] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the four-jaw chuck of the present invention;

[0018] Figure 5 It is a schematic diagram of the structure of the three-jaw chuck of the present invention.

[0019] In the figure: 1 threading machine, 2 self-resetting forward and backward switch, 3 chuck seat, 4 three-jaw chuck body, 5 reducer, 6 first motor, 7 support shaft, 8 slide, 9 speed reducer, 10 second motor, 11 four-jaw chuck body, 12 taper pipe thread die, 13 scale needle, 14 pipe diameter scale plate, 15 first jaw body, 16 jaw tip, 17 second jaw body, 18 triangular feed handle, 19 main motor switch, 20 large compass, 21 protruding block reset handle, 22 protruding block reset handle tongue, 23 reset handle, 24 main positioning plate, 25 main positioning block, 26 elastic chuck, 27 main positioning block fixing screw, 28 small positioning block, 29 positioning block interconnecting rod, 30 length control bracket, 31 moving rod, 32 elastic oblique tongue, 33 length scale, 34 locking handle, 35 limit stop rod, 36 V-shaped bracket, 37 roller, 38 triangular handle, 39 square center rod. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-5A threading machine for processing standard taper pipe threads, comprising a threading machine 1, a self-resetting reversing switch 2 is fixedly installed on one side of the top of the threading machine 1, a first motor 6 is provided inside the threading machine 1, the first motor 6 is fixedly connected to a reducer 5, the output shaft of the reducer 5 is fixedly connected to the top three-jaw chuck body 4, the output shaft of the reducer 5 is fixedly connected to the square hole of the umbrella gear in the three-jaw chuck body 4, the back of the three-jaw chuck body 4 is fixedly connected to the chuck seat 3, the top of the threading machine 1 is fixedly connected to a V-shaped bracket 36, a roller 37 is installed inside the V-shaped bracket, the number of the roller 37 is two groups, and three rollers are fixedly installed below the V-shaped bracket 36. A corner handle 38 is provided with a square center rod 39 inside the triangular handle 38, a length control bracket 30 is fixedly installed on one side of the three-jaw chuck body 4, a moving rod 31 is provided at the front end of the length control bracket 30, a length scale 33 is provided on the top of the length control bracket 30, an elastic oblique tongue 32 is fixedly installed at the front end of the moving rod 31, a locking handle 34 is provided at the tail end of the moving rod 31, a limited stop rod 35 is provided opposite the moving rod 31, a first claw body 15 is fixedly installed on the front side of the three-jaw chuck body 4, a claw tip 16 is provided at the top of the first claw body 15, a four-jaw chuck body 11 is provided directly opposite the three-jaw chuck body 4, and the four-jaw chuck The front of the disk 11 is provided with a second claw body 17, the top of the second claw body 17 is fixedly installed with a tapered pipe thread die 12, the side of the second claw body 17 is provided with a scale needle 13, the front of the four-jaw chuck body 11 is provided with a pipe diameter scale plate 14, the back of the four-jaw chuck body 11 is fixedly installed with a large compass 20, the outer arc surface of the large compass 20 is provided with a protruding block reset handle 21 and a reset handle 23, the protruding block reset handle 21 is provided with a protruding block reset handle tongue 22, the back of the large compass 20 is fixedly connected to the main positioning disk 24, the outer arc surface of the main positioning disk 24 is fixedly installed with a main positioning block 25 and a small positioning block 28, the outer arc surface of the main positioning disk 24 A groove is milled on the arc surface, and the groove surrounds the outer circular arc surface of the entire positioning disk 24. A main positioning block 25 and a small positioning block 28 are provided in the groove. The main positioning block 25 is adapted to be equipped with an elastic clamp 26. A main positioning block fixing screw 27 is installed on the side of the main positioning block 25. A positioning block interconnecting rod 29 is fixed between the main positioning block 25 and the small positioning block 28. The main positioning disk 24 is fixedly connected to the output shaft of the second motor 10 through a speed regulating reducer 9. A slide 8 is installed below the speed regulating reducer 9. A main motor switch 19 is provided on one side of the slide 8. A support shaft 7 is passed through the hole of the slide 8, and a triangular feed handle 18 is installed directly below the slide 8.

[0022] When in use, lower the limit stopper 35 and place the pipe to be processed on the V-shaped bracket 36. The pipe relies on the four rollers 37 installed on the V-shaped bracket 36. The pipe can be gently pushed forward into the three-jaw chuck 4 by hand. When the pipe moves forward to the limit stopper 35, the pipe positioning is completed. At this time, turn the self-resetting forward and backward switch 2 to control the three first claws 15 on the three-jaw chuck 4 to contract and clamp the pipe. Lift the stopper of the limit stopper 35, observe the diameter of the clamped pipe, and adjust the moving rod 31 to control After finishing, tighten the main positioning block fixing screw 27 on the main positioning block 25, and the thread size adjustment is completed. Press the main motor switch 19 to rotate the machine head and pull the triangular feed handle 18 to advance the threading. When the thread is sleeved to the preset length, the highest point of the protruding block reset handle 21 touches the elastic oblique tongue 32 on the moving rod 31 in front of the side. At this time, the protruding block reset handle tongue 22 of the protruding block reset handle 21 disengages from the main positioning block elastic clamp 26 on the main positioning block 25, and at the same time drives the large compass 20 to rotate to open the four-piece tapered pipe thread die 12. When the protruding block reset handle 21 is rotated to the small positioning block 28, the four plates are When the threading is complete, the elastic latch 32 contacts the lug reset handle 21, generating resistance. Because the rear portion of the elastic latch 32 is equipped with a spring, and the upper portion of the elastic latch 32 is designed with a beveled surface where it contacts the lug reset handle 21, when the resistance is greater, the elastic latch 32 retracts slightly. Simultaneously, the beveled surface of the elastic latch 32 pushes the lug reset handle 21 against it, pushing it back and causing the entire carriage 8 to retract. At this point, the machine head rotates, but the lug reset handle 21 does not contact the elastic latch 32. By turning the triangular feed handle 18 backward, the entire carriage 8 moves backward and engages the stop travel switch, stopping the machine and completing the threading process. To continue processing the same pipe diameter, any of the four reset handles 21 fixed to the large compass 20 can be pushed to engage the lug 22 of the lug reset handle into the elastic clamp 26 of the main positioning block, completing the reset of the four-piece taper pipe threading die.

[0023] It should be noted that, in this document, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0024] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A threading machine capable of processing standard taper pipe threads, comprising a threading machine (1), characterized in that: A self-resetting forward and backward switch (2) is fixedly installed on one side of the top of the threading machine (1); a first motor (6) is provided inside the threading machine (1); the first motor (6) is fixedly connected to a reducer (5); the output shaft of the reducer (5) is fixedly connected to the top three-jaw chuck body (4); the back of the three-jaw chuck body (4) is fixedly connected to a chuck seat (3); the top of the threading machine (1) is fixedly connected to a V-shaped bracket (36); a roller (37) is installed inside the V-shaped bracket; a triangular handle (38) is fixedly installed below the V-shaped bracket (36); a square center rod (39) is provided inside the triangular handle (38); a length control bracket (30) is fixedly installed on one side of the three-jaw chuck body (4); The front end of the length control bracket (30) is provided with a moving rod (31), the top of the length control bracket (30) is provided with a length scale (33), the front end of the moving rod (31) is fixedly installed with an elastic oblique tongue (32), the tail end of the moving rod (31) is provided with a locking handle (34), and a limited stopper rod (35) is provided opposite to the moving rod (31). The front of the three-jaw chuck body (4) is fixedly installed with a first claw body (15), the top of the first claw body (15) is provided with a claw tip (16), and the opposite side of the three-jaw chuck body (4) is provided with a four-jaw chuck body (11), the front of the four-jaw chuck (11) is provided with a second claw body (17), and the top of the second claw body (17) is fixedly installed with a tapered tube. The screw die (12) is provided with a scale needle (13) on the side of the second claw body (17), the front of the four-claw chuck body (11) is provided with a pipe diameter scale plate (14), the back of the four-claw chuck body (11) is fixedly installed with a large compass (20), the outer arc surface of the large compass (20) is provided with a protruding block reset handle (21) and a reset handle (23), the protruding block reset handle (21) is provided with a protruding block reset handle tongue (22), the back of the large compass (20) is fixedly connected with a main positioning disk (24), the outer arc surface of the main positioning disk (24) is fixedly installed with a main positioning block (25) and a small positioning block (28), the outer arc surface of the main positioning disk (24) is milled with a groove, and the groove surrounds the entire positioning disk (24) ) is provided with an outer circular arc surface, a main positioning block (25) and a small positioning block (28) in the groove, the main positioning block (25) is adapted to be equipped with an elastic clamp (26), a main positioning block fixing screw (27) is provided on the side of the main positioning block (25), a positioning block interconnection rod (29) is fixedly provided between the main positioning block (25) and the small positioning block (28), the main positioning disk (24) is fixedly connected to the output shaft of the second motor (10) through a speed regulating reducer (9), a slide (8) is provided below the speed regulating reducer (9), a main motor switch (19) is provided on one side of the slide (8), a support shaft (7) is passed through the hole of the slide (8), and a triangular feed handle (18) is installed just below the slide (8).

2. A threading machine capable of processing standard taper pipe threads according to claim 1, characterized in that: The output shaft of the speed reducer (5) is fixedly connected to the square hole of the umbrella gear in the three-jaw chuck body (4).

3. The threading machine capable of processing standard taper pipe threads according to claim 1, characterized in that: The number of the rollers (37) is two groups.

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