Numerical control pipe bending die

Abstract

The utility model relates to the technical field of numerical control pipe bending, in particular to a numerical control pipe bending die which comprises a bending die and a clamping die, pipeline grooves used for pipeline limiting are formed in the opposite sides of the bending die and the clamping die, and anti-disengaging pins are connected to the positions, at the upper ends and the lower ends of the pipeline grooves, of one side of the bending die. Blind holes used for insertion of the anti-disengaging pins are formed in the positions, at the upper end and the lower end of the pipeline groove, of one side of the clamping die. According to the numerical control pipe bending die, when a numerical control pipe bending machine bends a multi-bent-section pipe, the pipe does not need to be held by hands, the pipe cannot be disengaged from the clamping portion of the die, it is guaranteed that the multi-bent-section pipe is bent smoothly, the labor intensity of operators is reduced, and the risk that the human body is mechanically injured is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipe bending die, in particular to a numerical control pipe bending die, belongs to numerical control pipe bending technical field. BACKGROUND

[0002] When the pipe bending machine is used to bend the pipe with multiple bending sections, the pipe will be pulled out of the clamping section of the pipe bending die when the pipe is fed forward due to the pipe's own rigidity and the problem of the center of gravity moving forward. When the die is closed after the pipe is pulled out, the pipe will be crushed. At present, the pipe can only be manually held to prevent it from being pulled out during pipe bending. If an accident occurs when the pipe is manually held, it will cause serious mechanical injury to the personnel. There is no special pipe bending die in China at present, so a pipe anti-pulling numerical control pipe bending die is invented to prevent the pipe from being pulled out of the clamping section of the numerical control pipe bending die during pipe bending, and manual holding of the pipe is not required. The pipe anti-pulling numerical control pipe bending die is used in actual numerical control pipe bending and has achieved good results. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides a numerical control pipe bending die.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A numerical control pipe bending die, comprising a bending die and a die, and the opposite sides of the bending die and the die are both provided with a pipe slot for limiting the pipe. The bending die is connected with a pipe anti-pulling pin at the upper and lower ends of the pipe slot on one side. The die is provided with a blind hole for inserting the pipe anti-pulling pin at the upper and lower ends of the pipe slot on one side.

[0006] Optionally, a pin hole is formed at the connection between the bending die and the pipe anti-pulling pin, and the pipe anti-pulling pin is inserted and installed in the pin hole.

[0007] Optionally, an insert block is installed at one end of the bending die, and a pipe slot is formed on one side of the insert block. The pipe slot on the insert block is aligned with the end of the pipe slot on the bending die.

[0008] Optionally, a die extension section is installed at one end of the die, and a pipe slot is formed on one side of the die extension section. The pipe slot on the die extension section is aligned with the end of the pipe slot on the die.

[0009] Optionally, two first threaded holes are formed at the connection between the end of the bending die and the insert block, and the insert block is connected with the bending die through the first threaded holes and screws.

[0010] Optionally, two second threaded holes are formed at the connection between the end of the die and the die extension section, and the die extension section is connected with the die through the second threaded holes and screws.

[0011] The utility model has the advantages of:

[0012] The numerical control pipe bending die realizes that when the numerical control pipe bending machine bends a multi-bend section pipe, the pipe does not need to be manually held and will not be pulled out from the die clamping part, thereby ensuring smooth bending of the multi-bend section pipe, reducing the labor intensity of the operator, and reducing the risk of mechanical injury to the operator.

[0013] When a large-diameter pipe is bent, the clamping die extension section and the insert extension clamping surface are used to increase the clamping force, thereby achieving a better bending effect and improving the bending efficiency and quality. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to facilitate the understanding of those skilled in the art, the present application will be further described below with reference to the accompanying drawings.

[0015] Fig. 1 The figure is a schematic diagram of the overall structure of the present application.

[0016] Fig. 2 The figure is a schematic diagram of the bending die structure of the present application.

[0017] Fig. 3 The figure is a schematic diagram of the clamping die structure of the present application.

[0018] In the figure: 1, bending die; 2, anti-pulling pin; 3, clamping die; 4, clamping die extension section; 5, insert; 6, screw; 7, first threaded hole; 8, pin hole; 9, blind hole; 10, second threaded hole. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described below in conjunction with embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0020] Please refer to Figs. 1-3 As shown in the figure, a numerical control pipe bending die includes a bending die 1 and a clamping die 3. The bending die 1 and the clamping die 3 are provided with pipe grooves for pipe limiting on opposite sides. The bending die 1 is connected with anti-pulling pins 2 at the upper and lower ends of the pipe grooves. The clamping die 3 is provided with blind holes 9 for inserting the anti-pulling pins 2 at the upper and lower ends of the pipe grooves.

[0021] Specifically, the bending die 1 is provided with a pin hole 8 at the connection with the anti-pulling pin 2. The anti-pulling pin 2 is inserted and installed with the bending die 1 through the pin hole 8. The anti-pulling pin 2 plays a supporting and limiting role in use. During the feeding and discharging of the pipe, one end of the anti-pulling pin 2 is always inserted in the blind hole 9, and the pipe can pass through the two anti-pulling pins 2.

[0022] The anti-disengaging pin 2 can be inserted into the blind hole 9, so that the pipe to be bent is placed between the two anti-disengaging pins 2 during the pipe bending operation. During the bending process, the bending die 1 and the clamping die 3 apply clamping and bending pushing force to the pipe, so that the pipe is bent. During the pipe bending process, the upper and lower parts are limited by the anti-disengaging pins 2, so that the pipe can accurately enter the pipe groove. And the multi-bend pipe bending forming needs the bending die 1 and the clamping die 3 to reciprocate multiple times to achieve the required bending effect. During the multiple bending and clamping and releasing of the bending die 1 and the clamping die 3, the pipe is limited by the two anti-disengaging pins 2 and cannot be disengaged from the clamping area. It can always accurately enter the inside of the pipe groove, and the pipe will not be crushed due to disengagement from the clamping area. The use of the anti-disengaging pin 2 limits the pipe bending process, so that the worker does not need to manually support the pipe, improving the safety of the bending process.

[0023] Specifically, one end of the bending die 1 is provided with an insert block 5, one side of the insert block 5 is provided with a pipe groove, and the pipe groove on the insert block 5 is aligned with the end of the pipe groove on the bending die 1.

[0024] Specifically, one end of the clamping die 3 is provided with a clamping die extension section 4, one side of the clamping die extension section 4 is provided with a pipe groove, and the pipe groove on the clamping die extension section 4 is aligned with the end of the pipe groove on the clamping die 3.

[0025] The insert block 5 and the clamping die extension section 4 can respectively increase the clamping length of the bending die 1 and the clamping die 3. When the clamping force is not enough during the bending of large-diameter pipes, the clamping surface can be extended by the clamping die extension section 4 and the insert block 5 to increase the clamping force, thereby achieving better bending effect and improving the bending efficiency and quality.

[0026] Specifically, two first threaded holes 7 are arranged at the connection between the end of the bending die 1 and the insert block 5, and the insert block 5 is connected with the bending die 1 through the screws 6 and the first threaded holes 7.

[0027] Specifically, two second threaded holes 10 are arranged at the connection between the end of the clamping die 3 and the clamping die extension section 4, and the clamping die extension section 4 is connected with the clamping die 3 through the screws 6 and the second threaded holes 10. The insert block 5 and the clamping die extension section 4 are also provided with through holes for the screws 6 to pass through and be installed. The insert block 5 and the clamping die extension section 4 can be respectively installed and fixed with the bending die 1 and the clamping die 3 through the screws 6 and the first threaded holes 7 and the second threaded holes 10. The installation and removal of the insert block 5 and the clamping die extension section 4 are convenient and fast, and they can be selected for installation or removal according to the actual use requirements.

[0028] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific implementation. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A CNC pipe bending die, comprising a bending die (1) and a clamping die (3), characterized in that, The bending mold (1) and clamping mold (3) are provided with pipe grooves for pipe positioning on opposite sides. The bending mold (1) is connected to anti-detachment pins (2) at both the upper and lower ends of the pipe groove on one side. The clamping mold (3) is provided with blind holes (9) for inserting anti-detachment pins (2) at both the upper and lower ends of the pipe groove on one side.

2. The CNC pipe bending mold according to claim 1, characterized in that, A pin hole (8) is provided at the connection between the bending mold (1) and the anti-detachment pin (2), and the anti-detachment pin (2) is inserted and installed into the bending mold (1) through the pin hole (8).

3. The CNC pipe bending mold according to claim 1, characterized in that, One end of the bending die (1) is fitted with an insert (5), and a pipe groove is provided on one side of the insert (5). The pipe groove on the insert (5) is aligned with the end of the pipe groove on the bending die (1).

4. A CNC pipe bending mold according to claim 1, characterized in that, One end of the clamping mold (3) is equipped with a clamping mold extension section (4), and a pipe groove is opened on one side of the clamping mold extension section (4). The pipe groove on the clamping mold extension section (4) is aligned with the end of the pipe groove on the clamping mold (3).

5. A CNC pipe bending mold according to claim 3, characterized in that, The end of the bending die (1) is connected to the insert (5) with two first threaded holes (7). The insert (5) is connected to the bending die (1) by screws (6) and the first threaded holes (7).

6. A CNC pipe bending mold according to claim 4, characterized in that, Two second threaded holes (10) are provided at the connection between the end of the clamping mold (3) and the clamping mold extension section (4). The clamping mold extension section (4) is connected to the clamping mold (3) by screws (6) and the second threaded holes (10).

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