Die head of bench pipe cutting and threading machine

Abstract

The utility model relates to a die head of bench pipe cutting and threading machine, the utility model's characteristics are: including handle, tray, clamping screw, back disc, curved disc, front disc and four dies, the front disc is provided with four die grooves for installing die, four dies are installed in four die grooves respectively, and are provided with sliding groove on each die, the curved disc is provided with four arc convex strips that drive the die to stretch out and draw back through rotating the curved disc, the curved disc covers the front disc, and four arc convex strips on the curved disc are located in the sliding groove of four dies respectively, the back disc is provided with adjusting long groove, the back disc is fixed on the front disc through the tray, the curved disc is located between the front disc and the back disc, one end of the clamping screw is fixed on the curved disc, and the clamping screw passes through the adjusting long groove of the back disc, and the handle is fixed on the other end of the clamping screw. The utility model has the advantages of reasonable structure design, convenient use and can process threads of different pipe diameters.

Description

Technical Field

[0001] This utility model relates to a die head for a benchtop pipe cutting and threading machine, belonging to the field of external thread processing equipment, and is mainly used for external pipe thread processing in pipeline connections in industries such as construction, fire protection, petroleum and chemical engineering. Background Technology

[0002] Threading machines, also known as electric threading machines, electric pipe cutting and threading machines, threading machines, pipe threading machines, and rebar threading machines, are electric devices that replace the manual pipe threading dies used before 1980. They make pipe threading during installation easier and faster, reducing the labor intensity of pipe installers. The die assembly in a threading machine is used to process the external threads of pipe fittings. However, the design of existing die assemblies is not ideal, making them inconvenient to use, and a single die can only process threads of one pipe diameter. 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 head for a benchtop pipe cutting and threading machine that has a reasonable structural design, is easy to use, and can process threads of different pipe diameters.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: The structural features of the die head of the benchtop pipe cutting and threading machine are as follows: it includes a handle, a tray, a clamping screw, a rear plate, a curved plate, a front plate, and four dies. The front plate is provided with four die slots for installing dies, and the four dies are respectively installed in the four die slots. Each die is provided with a sliding groove, and the direction of the sliding groove is perpendicular to the direction in which the die slides in the die slot. The curved plate is provided with four arc-shaped protrusions that drive the dies to extend and retract by rotating the curved plate. The curved plate covers the front plate, and the four arc-shaped protrusions on the curved plate are respectively located in the sliding grooves of the four dies. The rear plate is provided with an adjustment groove. The rear plate is fixed to the front plate by the tray. The curved plate is located between the front plate and the rear plate. One end of the clamping screw is fixed to the curved plate. The clamping screw passes through the adjustment groove of the rear plate, and the handle is fixed to the other end of the clamping screw.

[0005] Preferably, the present invention also includes a cross-slot pan head screw and a scale plate, wherein the scale plate is fixed to the rear plate by the cross-slot pan head screw and the scale plate cooperates with the handle.

[0006] Preferably, the present invention also includes a hexagonal tapered set screw and a support shaft assembly, wherein the support shaft assembly is fixed to the rear plate by the hexagonal tapered set screw.

[0007] Preferably, the tray of this invention is fixed to the front plate by hexagonal screws.

[0008] Preferably, the present invention also includes a washer, an internal tooth washer, and a nut. One end of the clamping screw is fixed to the curved plate by the internal tooth washer and the nut, and the washer and the handle are fixed to the other end of the clamping screw.

[0009] Preferably, the present invention also includes a positioning pin, which is mounted on the rear plate. The positioning pin is used to control the relative position of the rear plate and the front plate.

[0010] Preferably, the present invention also includes a ball bearing, which is mounted on the front plate and cooperates with the tray. The ball bearing is used for positioning the die.

[0011] Preferably, the present invention also includes a second pin and a roller, the roller being mounted on the front plate via the second pin. The roller controls the thread length during threading by cooperating with the pitch-changing mechanism in the benchtop pipe cutting and threading machine.

[0012] Preferably, this invention also includes a slotted conical set screw, a No. 1 pin, and an internal pressure spring. The inner side of the rear plate has a groove for mounting the internal pressure spring, which is located within the groove. The No. 1 pin is mounted on the rear plate, and the slotted conical set screw is mounted on the tray. The two ends of the internal pressure spring are respectively limited by the slotted conical set screw and the No. 1 pin. The internal pressure spring plays a role in buffering and vibration damping during the threading process.

[0013] Compared with the prior art, this utility model has the following advantages and effects: the overall structure is simple, the design is reasonable, and it is easy to use. The position of the die can be quickly adjusted by the handle, so that the threading machine can process threads of different pipe diameters, thereby improving the quality and performance of the threading machine. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is an exploded view of the die head of the benchtop pipe cutting and threading machine in this embodiment of the present invention.

[0016] Figure 2 This is an enlarged structural schematic diagram of the rear disc with an internal pressure spring installed in an embodiment of this utility model.

[0017] In the diagram: 1-Phillips head pan screw; 2-Scale plate; 3-Hex socket head cap screw; 4-Slotted cone set screw; 5-Spindle assembly; 6-Handle; 7-Pin No. 1; 8-Panel; 9-Hex socket head cap screw; 10-Washer; 11-Locking pin; 12-Clamping screw; 13-Rear plate; 14-Internal compression spring; 15-Curved plate; 16-Internal tooth washer; 17-Ball contact; 18-Nut; 19-Die; 20-Pin No. 2; 21-Roller; 22-Front plate; 131-Adjusting groove; 132-Limit groove; 151-Arc-shaped protrusion; 191-Sliding groove; 221-Die groove; 222-Rotation limit groove. Detailed Implementation

[0018] 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.

[0019] Example.

[0020] See Figures 1 to 2 The die head of the benchtop pipe cutting and threading machine in this embodiment includes a cross-grooved pan head screw 1, a scale plate 2, a hexagonal cone end set screw 3, a slotted cone end set screw 4, a support shaft assembly 5, a handle 6, a No. 1 pin 7, a tray 8, a hexagonal screw 9, a washer 10, a locating pin 11, a clamping screw 12, a rear plate 13, an internal pressure spring 14, a curved plate 15, an internal tooth washer 16, a ball bearing 17, a nut 18, a die 19, a No. 2 pin 20, a roller 21, and a front plate 22.

[0021] In this embodiment, the front disc 22 is provided with four die grooves 221 for mounting dies 19. The four dies 19 are respectively installed in the four die grooves 221, and the dies 19 can slide in the corresponding die grooves 221. Each die 19 is provided with a sliding groove 191, the direction of which is perpendicular to the direction in which the die 19 slides in the die groove 221. The curved disc 15 is provided with four arc-shaped protrusions 151. The curved disc 15 covers the front disc 22, and the four arc-shaped protrusions 151 on the curved disc 15 are respectively located in the sliding grooves 191 of the four dies 19. Under the action of the arc-shaped protrusions 151, by rotating the curved disc 15, the arc-shaped protrusions 151 can drive the dies 19 to slide along the corresponding die grooves 221 to achieve the function of extension and retraction, thereby achieving the function of adjusting the position of the dies 19, so that the threading machine can process threads of different pipe diameters. The front disc 22 is also provided with a rotation limiting groove 222 for limiting the relative rotation of the front disc 22 and the rear disc 13.

[0022] In this embodiment, the rear plate 13 is provided with an adjustment slot 131. The rear plate 13 is fixed to the front plate 22 by a tray 8, which is fixed to the front plate 22 by an Allen screw 9. The curved plate 15 is located between the front plate 22 and the rear plate 13. The curved plate 15 is not locked between the front plate 22 and the rear plate 13, and it can rotate under the action of external force.

[0023] In this embodiment, one end of the clamping screw 12 is fixed to the curved plate 15. Normally, one end of the clamping screw 12 is fixed to the curved plate 15 by the internal tooth washer 16 and the nut 18. The clamping screw 12 passes through the adjustment slot 131 of the rear plate 13, and the washer 10 and the handle 6 are fixed to the other end of the clamping screw 12.

[0024] In this embodiment, the scale plate 2 is fixed to the rear plate 13 by a cross-slot pan head screw 1. The scale plate 2 cooperates with the handle 6. The scale plate 2 is set with scales. When the handle 6 is adjusted to the corresponding scale of the scale plate 2, the handle 6 drives the curve plate 15 to rotate. The curve plate 15 drives the die 19 to slide along the die groove 221 of the front plate 22 to the corresponding position through the arc-shaped protrusion 151. That is, the position of the die 19 can be easily known through the scale plate 2, and it can be clearly known what diameter of thread the die 19 is suitable for processing at this position.

[0025] In this embodiment, the support shaft assembly 5 is fixed to the rear plate 13 by the internal hexagonal tapered set screw 3. The support shaft assembly 5 is used to connect to the main body of the threading machine. The rear plate 13 is provided with a limiting groove 132. The rear plate 13 is fixed to the threading machine carriage component and remains stationary by the support shaft assembly 5 and the limiting groove 132 on the rear plate 13.

[0026] In this embodiment, the positioning pin 11 is installed on the rear plate 13; the ball bearing 17 is installed on the front plate 22, and the ball bearing 17 cooperates with the tray 8; the roller 21 is installed on the front plate 22 through the second pin 20.

[0027] In this embodiment, the inner side of the rear plate 13 is provided with a groove for installing the inner pressure spring 14. The inner pressure spring 14 is located in the groove of the rear plate 13. The first pin 7 is installed on the rear plate 13, and the slotted conical end set screw 4 is installed on the tray 8. The two ends of the inner pressure spring 14 are respectively limited by the slotted conical end set screw 4 and the first pin 7. During threading, the rear plate 13 is fixed to the threading machine slide assembly by the support shaft assembly 5 and the limiting groove 132 on the rear plate 13, and the front plate 22 rests against the inclined block of the threading machine slide assembly's pitch-changing mechanism by the roller 21. The front plate 22 and the rear plate 13 can rotate relative to each other, and the rotation range is limited by the positioning pin 11 and the rotation limiting groove 222 on the front plate 22. After threading to the specified length, under the elastic force of the inner pressure spring 14, the front plate 22 slides off the inclined block, the die is released, and the threading is completed.

[0028] 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 head for a benchtop pipe cutting and threading machine, characterized in that: The device includes a handle (6), a tray (8), a clamping screw (12), a rear plate (13), a curved plate (15), a front plate (22), and four dies (19). The front plate (22) is provided with four die slots (221) for mounting the dies (19). The four dies (19) are respectively installed in the four die slots (221). Each die (19) is provided with a sliding groove (191). The direction of the sliding groove (191) is perpendicular to the direction in which the die (19) slides in the die slot (221). The curved plate (15) is provided with four arc-shaped protrusions (11) that drive the dies (19) to extend and retract by rotating the curved plate (15). 51), the curved disk (15) covers the front disk (22), and the four arc-shaped protrusions (151) on the curved disk (15) are respectively located in the sliding grooves (191) of the four teeth (19). The rear disk (13) is provided with an adjustment groove (131). The rear disk (13) is fixed on the front disk (22) by a tray (8). The curved disk (15) is located between the front disk (22) and the rear disk (13). One end of the clamping screw (12) is fixed on the curved disk (15). The clamping screw (12) passes through the adjustment groove (131) of the rear disk (13). The handle (6) is fixed on the other end of the clamping screw (12).

2. The die head of a benchtop pipe cutting and threading machine according to claim 1, characterized in that: It also includes a cross-slot pan head screw (1) and a scale plate (2), which is fixed to the rear plate (13) by the cross-slot pan head screw (1) and cooperates with the handle (6).

3. The die head of a benchtop pipe cutting and threading machine according to claim 1, characterized in that: It also includes a hexagonal set screw (3) and a support shaft assembly (5), the support shaft assembly (5) being fixed to the rear plate (13) by the hexagonal set screw (3); the rear plate (13) is provided with a limit groove (132).

4. The die head of a benchtop pipe cutting and threading machine according to claim 1, characterized in that: The tray (8) is fixed to the front plate (22) by hex socket screws (9).

5. The die head of a benchtop pipe cutting and threading machine according to claim 1, characterized in that: It also includes a washer (10), an internal tooth washer (16) and a nut (18), one end of the clamping screw (12) is fixed to the curved plate (15) by the internal tooth washer (16) and the nut (18), and the washer (10) and the handle (6) are fixed to the other end of the clamping screw (12).

6. The die head of a benchtop pipe cutting and threading machine according to claim 1, characterized in that: It also includes a locating pin (11) which is mounted on the rear plate (13).

7. The die head of a benchtop pipe cutting and threading machine according to claim 1, characterized in that: It also includes a ball bearing (17) mounted on the front disc (22), which engages with the tray (8).

8. The die head of a benchtop pipe cutting and threading machine according to claim 1, characterized in that: It also includes a second pin (20) and a roller (21), which is mounted on the front plate (22) via the second pin (20).

9. The die head of a benchtop pipe cutting and threading machine according to claim 1, characterized in that: It also includes a slotted conical set screw (4), a first pin (7) and an inner pressure spring (14). The inner side of the rear plate (13) is provided with a groove for installing the inner pressure spring (14). The inner pressure spring (14) is located in the groove of the rear plate (13). The first pin (7) is installed on the rear plate (13). The slotted conical set screw (4) is installed on the tray (8). The two ends of the inner pressure spring (14) are respectively limited by the slotted conical set screw (4) and the first pin (7).

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