CN211990382U - Simple pipe bender - Google Patents

Simple pipe bender Download PDF

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Publication number
CN211990382U
CN211990382U CN202020188884.9U CN202020188884U CN211990382U CN 211990382 U CN211990382 U CN 211990382U CN 202020188884 U CN202020188884 U CN 202020188884U CN 211990382 U CN211990382 U CN 211990382U
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China
Prior art keywords
pipe
support
guide wheels
hydraulic cylinder
limiting holes
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CN202020188884.9U
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Chinese (zh)
Inventor
林树生
李仕斌
粟祥珑
陈毓涵
练梦陶
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Liuzhou Chenglong Special Purpose Vehicle Co ltd
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Liuzhou Chenglong Special Purpose Vehicle Co ltd
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Abstract

The utility model discloses a simple pipe bender, which comprises a power unit, a hydraulic cylinder, a mould and a fixed bracket, wherein the fixed bracket is provided with two guide wheels and a plurality of limiting holes for selecting installation positions for the guide wheels, and the two guide wheels are used for providing a first force application point and a second force application point for bending a pipe; the force application end of the die is provided with a tracing track for bending the pipe and is used for providing a third force application point for bending the pipe, the die is arranged on a symmetrical shaft of the two guide wheels, the die is connected with a piston rod of a hydraulic cylinder, a fixed support is fixed with the hydraulic cylinder, the pipe is arranged between the two guide wheels and the die, the hydraulic cylinder is controlled by a power unit and completes the bending work of the pipe through the movement of a piston of the hydraulic cylinder; the plurality of limiting holes are distributed in an axisymmetric manner by taking the axial direction of the piston rod as a symmetry axis, and the plurality of limiting holes are sequentially arranged in a direction away from the symmetry axis. The pipe bending machine can adjust the position of a force application point of the pipe bending, and reduces the damage of equipment and the pipe when different pipes are bent.

Description

Simple pipe bender
Technical Field
The utility model relates to a technical field of return bend equipment. More specifically, the utility model relates to a simple and easy bending machine.
Background
In the pipe processing process, the pipe is usually required to be bent. At present, a lot of equipment for bending pipes are provided, but most of the equipment are complex in structure, large in size, heavy in weight, difficult to move and inconvenient to construct and use. Therefore, the inventor researches a simple pipe bender to facilitate the pipe bending process.
In the research process, the inventor finds that a simple pipe bender also exists in the prior art, and the name of the simple pipe bender is as follows: plain type hydraulic pipe bender, the notice number is: CN 202779315U, but different from the simple tube bender studied by the inventor. The application point of the pipe bending machine in the prior art for pipe bending is fixed, namely the positions of two ends of a push plate applying force to the pipe in the prior art are fixed, when the pipe bending machine bends pipes with different wall thicknesses and different diameters, different bending resistance is easy to occur, the bending operation is forcibly implemented, and equipment and the pipes are damaged. Although the prior art describes that pipes of different types are replaced by corresponding dies, the problem that the equipment and the pipes are damaged due to the fact that the force application torque is not adjustable still cannot be solved. For the problems existing in the prior art, the simple pipe pressing machine independently researched by the inventor can effectively overcome the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to have the problem that is unfavorable for the pipe bending application of force to different wall thicknesses, different diameters to prior art's bending machine, provide a can change the simple and easy bending machine of application of force point position.
The utility model discloses a set up a plurality of spacing holes on the fixed bolster that will be used for fixed two leading wheels, a plurality of spacing holes are used for adjusting the distance between two locating wheels to can change the application of force point position that the pipe was bent, be convenient for to the pipe of different specifications is bent, reduces the damage of equipment and pipe.
To achieve these objects and other advantages in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided a simple pipe bender including a power unit, a hydraulic cylinder, a mold, and a fixing bracket, wherein the fixing bracket is mounted with two guide wheels for providing a first point of application and a second point of application for pipe bending, and a plurality of limit holes for selecting mounting positions for the guide wheels;
the force application end of the die is provided with a tracing track for bending the pipe and is used for providing a third force application point for bending the pipe at a position between the two guide wheels, the die is arranged on a symmetrical shaft of the two guide wheels, the die is connected with a piston rod of a hydraulic cylinder, a fixing support is fixed with the hydraulic cylinder, the pipe is arranged between the two guide wheels and the die, and the hydraulic cylinder is controlled by a power unit and completes the bending work of the pipe through the movement of the piston of the hydraulic cylinder;
the plurality of limiting holes are distributed in an axisymmetric manner by taking the axial direction of the piston rod as a symmetry axis, and the plurality of limiting holes are sequentially arranged in a direction away from the symmetry axis.
Preferably, the fixed bolster includes upper bracket and lower carriage, all is provided with a plurality of spacing holes on upper bracket and the lower carriage, and two leading wheels pass through spacing hole and install between upper bracket and lower carriage, and a plurality of spacing holes on the upper bracket are at least 4, and a plurality of spacing holes on the lower carriage and a plurality of spacing holes of upper bracket distribute the same, and correspond to each other.
Preferably, the upper bracket is hinged with the lower bracket through a hinge, and the lower bracket is fixed with the hydraulic cylinder.
Preferably, the lower support is a T-shaped plane plate body, the upper part with large width is the lower part with small width, the lower part of the T-shaped plane plate body is fixed with the hydraulic cylinder, the upper part of the T-shaped plane plate body is provided with the plurality of limiting holes, and the plurality of limiting holes are distributed in an axisymmetric manner by taking the lower part of the T-shaped plane plate body as a symmetry axis; the upper bracket is the same as the lower bracket in shape, and the lower end of the T-shaped plane plate body of the upper bracket is hinged with the lower end of the T-shaped plane plate body of the lower bracket through a hinge piece, so that the upper bracket rotates through the hinge piece and is overlapped with and separated from the plate surface of the lower bracket.
Preferably, the intersecting included angle of the extension lines of the plurality of limiting holes is larger than 150 degrees and smaller than 170 degrees, and the included angle is the included angle of the axial direction of the piston rod. Therefore, the position between the two guide wheels can be better adjusted, the positions of the first force application point and the second force application point are better, and the bending of pipes with different specifications is facilitated.
Preferably, the mould is connected with the piston rod of the hydraulic cylinder through a detachable mould bracket, so that the mould is convenient to replace.
Preferably, the mould has two plates with a semi-circular profile, between which is located a tracking track of the pipe which is curved.
Preferably, the guide wheel comprises a shaft, a bearing and a wheel body of the guide wheel, wherein the wheel body is in a cylinder shape with a small middle and large two ends; the bearing is arranged on an intermediate shaft line of the wheel body, the shaft is sleeved in the bearing, the upper end of the shaft is installed on the limiting hole of the upper support, and the lower end of the shaft is installed on the limiting hole of the lower support. The guide wheels can be conventional guide wheels, and the guide wheels capable of keeping the wheel bodies to rotate can be applied to the pipe bending machine of the application by fixing or sleeving the two ends of the guide wheels on the upper bracket and the lower bracket.
The utility model discloses at least, include following beneficial effect:
1. the utility model discloses a set up a plurality of spacing holes on the fixed bolster that is used for fixed two leading wheels, a plurality of spacing holes are used for adjusting the distance between two locating wheels, and two leading wheels are used for providing first application of force point and second application of force point for the pipe bending to can change the application of force point position at the pitch arc both ends that the pipe bent, be applicable to the pipe bending of different specifications. Because different bending force application points are adjusted for pipes with different wall thicknesses or different diameters, the bending resistance of the die can be reduced, and the damage to the pipes and equipment is reduced. Such as: the distance between two guide wheels is relatively large when the pipe wall is thicker or the diameter of the pipe is larger, the moment arm is increased, so that the moment is increased, the pipe bending of the pipe with thicker pipe wall or larger diameter is facilitated, and the bending resistance of the die is reduced. If the pipe wall of the pipe needing to be bent is thinner or the diameter ratio of the pipe is smaller, the distance between the two guide wheels is selected to be smaller, larger moment is not needed, and the bending stability is ensured.
2. The utility model discloses a set up the fixed bolster into including upper bracket and lower carriage, two leading wheels are installed between upper bracket and lower carriage through spacing hole, and the pipe goes on between upper bracket and lower carriage at the in-process of bending, makes the pipe implement the process of bending safer.
3. The utility model discloses a set up the upper bracket and pass through the articulated elements articulated with the lower carriage, the lower carriage is fixed with the pneumatic cylinder, and this setting means can make things convenient for separately with upper bracket and lower carriage and overlap, makes things convenient for the installation of leading wheel, makes things convenient for placing and taking out of pipe. The operation process comprises the steps of firstly uncovering the upper support from the lower support, selecting a limiting hole of the lower support, mounting the lower ends of the shafts of the two guide wheels on the limiting hole of the lower support, then placing a pipe between the two guide wheels and the die, overlapping the upper support and the lower support, sleeving the limiting hole of the upper support and the upper ends of the shafts of the guide wheels, thus completing the operation of placing the pipe to be bent on the pipe bender, and then completing the bending work of the pipe through the piston motion of the hydraulic cylinder under the control of the power unit. After the bending work is finished, the power unit controls the piston rod of the hydraulic cylinder to retract, the upper support is uncovered from the lower support, and the bent pipe is taken out, so that the whole operation process can be finished.
4. The utility model discloses all set up lower carriage and upper bracket into T type plane plate body, make things convenient for the range setting in a plurality of spacing holes to and the articulated elements of being convenient for is articulated with upper bracket and lower carriage, and the face of the upper bracket of being convenient for and lower carriage overlaps and parts.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural view of the simple pipe bender according to the present invention, showing the opened state of the upper and lower frames;
fig. 2 is a schematic side view of the simple pipe bender with the upper and lower brackets opened;
fig. 3 is a schematic structural diagram of the simple pipe bender in an overlapped state of the upper and lower brackets;
fig. 4 is a schematic side view of the simple pipe bender in a state where the upper and lower frames are overlapped;
FIG. 5 is a schematic structural view of the simple tube bender of the present invention with a tube placed thereon;
fig. 6 is an enlarged schematic structural view of the guide wheel of the simple pipe bender of the present invention;
wherein, the power unit 1; an oil supply pipe 2; a hydraulic cylinder 3; an upper bracket 4; a hinge 5; a mold holder 6; a mold 7; a guide wheel 8; a lower bracket 9; a limiting hole 10; a pipe 11 to be bent; the upper end 81 of the shaft; a bearing 82; a body 83 of the guide wheel; the lower end 84 of the shaft. Fig. 2 and 4 do not show the power unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.
The utility model relates to a simple pipe bender, which comprises a power unit, a hydraulic cylinder, a mould and a fixed bracket, wherein the fixed bracket is provided with two guide wheels and a plurality of limiting holes for selecting installation positions for the guide wheels, and the two guide wheels are used for providing a first force application point and a second force application point for bending a pipe; the force application end of the die is provided with a tracing track for bending the pipe and is used for providing a third force application point for bending the pipe at a position between the two guide wheels, the die is arranged on a symmetrical shaft of the two guide wheels, the die is connected with a piston rod of a hydraulic cylinder, a fixing support is fixed with the hydraulic cylinder, the pipe is arranged between the two guide wheels and the die, and the hydraulic cylinder is controlled by a power unit and completes the bending work of the pipe through the movement of the piston of the hydraulic cylinder; the plurality of limiting holes are distributed in an axisymmetric manner by taking the axial direction of the piston rod as a symmetry axis, and the plurality of limiting holes are sequentially arranged in a direction away from the symmetry axis.
The utility model discloses an implementation process does: when a pipe with a certain specification needs to be bent, the fixing support is stably placed or fixed on the ground or other platforms, the two guide wheels are installed on the fixing support, the installation positions of the two guide wheels are determined according to different specifications of the pipe, the die is ensured to be arranged on the symmetrical axes of the two guide wheels, and the third force application point is arranged between the first force application point and the second force application point. By changing the distance between the two guide wheels, the distance between the first force application point and the third force application point, the distance between the second force application point and the third force application point and the length of the force arm can be changed, so that the moment can be changed under the condition that the force obtained by the third force application point is the same. Such as: the distance between two guide wheels is relatively large, so that the length of the force arm is increased, the moment is increased, the pipe bending of the pipe with the relatively thick wall or the relatively large diameter is facilitated, and the bending resistance of the die is reduced. If the pipe wall of the bent pipe is thin or the diameter of the bent pipe is smaller, the distance between the two guide wheels is selected to be relatively smaller, and the stability of bending of the pipe is ensured. After the two guide wheels and the fixed support are installed, the pipe is arranged between the two guide wheels and the die, the die is pushed to move forwards through the piston rod of the hydraulic cylinder under the control of the power unit, the pipe is bent, after the pipe is bent to a specified radian, the piston rod of the hydraulic cylinder is controlled to retract through the power unit, and the bent pipe is taken out.
Examples
Fig. 1 to 6 show a specific implementation form of the present invention, which is a simple pipe bender, comprising a power unit 1, a hydraulic cylinder 3, a mold 7 and a fixing bracket, wherein the fixing bracket is provided with two guide wheels 8 and a plurality of limiting holes 10 for selecting mounting positions for the guide wheels 8, and the two guide wheels 8 are used for providing a first force application point and a second force application point for bending a pipe 11;
the force application end of the die 7 is provided with a tracing track for bending the pipe and is used for providing a third force application point for bending the pipe at a position between the two guide wheels 8, the die 7 is arranged on a symmetrical shaft of the two guide wheels 8, the die 7 is connected with a piston rod of the hydraulic cylinder 3, the fixing bracket is fixed with the hydraulic cylinder 3, the pipe 11 is arranged between the two guide wheels 8 and the die 7, the hydraulic cylinder 3 is controlled by the power unit 1, the power unit 1 is conventionally connected with the hydraulic cylinder 3 through the oil supply pipe 2, and the bending work of the pipe 11 is completed through the piston movement of the hydraulic cylinder 3;
the plurality of limiting holes 10 are distributed in an axisymmetric manner by taking the axial direction of the piston rod as a symmetry axis, and the plurality of limiting holes are sequentially arranged in a direction away from the symmetry axis.
The realization process is as follows: when a pipe 11 with a certain specification is bent, firstly, a fixed bracket is stably or fixedly arranged on the ground or other platforms, two guide wheels 8 are arranged on the fixed bracket, the installation positions of the two guide wheels 8 are determined according to different specifications of the pipe 11, the mould 7 is ensured on the symmetrical axis of the two guide wheels 8, and the third force application point is arranged between the first force application point and the second force application point. By changing the distance between the two guide wheels 8, the distance between the first force application point and the third force application point, the distance between the second force application point and the third force application point and the length of the force arm can be changed, so that the moment can be changed under the condition that the force obtained by the third force application point is the same. Such as: the distance between two guide wheels is relatively large, so that the length of the force arm is increased, the moment is increased, the pipe bending of the pipe with the relatively thick wall or the relatively large diameter is facilitated, and the bending resistance of the die is reduced. If the pipe wall of the bent pipe is thin or the diameter of the bent pipe is smaller, the distance between the two guide wheels is selected to be relatively smaller, and the stability of bending of the pipe is ensured. After the two guide wheels 8 and the fixed support are installed, the pipe 11 is arranged between the two guide wheels 8 and the die 7, the die is pushed to move forwards through the piston rod of the hydraulic cylinder 3 by the power unit control 1, the pipe 11 is bent, after the pipe is bent to a specified radian, the piston rod of the hydraulic cylinder 3 is controlled to retract by the power unit 1, and the bent pipe is taken out.
On the basis of the above embodiment, the fixing bracket may be configured to include an upper bracket 4 and a lower bracket 9, a plurality of limiting holes 10 are provided on both the upper bracket 4 and the lower bracket 9, two guide wheels are installed between the upper bracket and the lower bracket through the limiting holes, the plurality of limiting holes 10 on the upper bracket 4 are at least four, the plurality of limiting holes on the upper bracket 4 shown in the figure are sixteen, and eight are respectively arranged on both sides of the symmetry axis. The plurality of limiting holes 10 on the lower bracket 9 and the plurality of limiting holes 10 on the upper bracket 4 are distributed in the same way and correspond to each other. According to the arrangement of the fixed support, the two guide wheels 8 are arranged between the upper support 4 and the lower support 9 through the limiting holes 10, and the bending process of the pipe 11 is carried out between the upper support 4 and the lower support 9, so that the bending process of the pipe 11 is safer.
On the basis of the above embodiment, the specific structure of the guide wheel 8 may be a wheel body 83 including a shaft, a bearing 82 and a guide wheel, the wheel body 83 is a similar cylinder with a small middle and large two ends; the bearing 82 is arranged on the middle axis of the wheel body 83, the shaft is sleeved in the bearing 82, the upper end 81 of the shaft is arranged on the limiting hole of the upper bracket 4, and the lower end 84 of the shaft is arranged on the limiting hole of the lower bracket 9. The utility model discloses used wire wheel 8 can be for the leading wheel on the market, can fix through both ends or the cover is established on upper and lower support, keeps wheel body pivoted leading wheel all can use in the bending machine of this application. The upper bracket 4 is hinged with the lower bracket 9 through a hinge piece 5, the lower bracket 9 is fixed with the hydraulic cylinder 3, and the hinge piece 5 can be a turnover shaft and the like, so that the upper bracket and the lower bracket can be turned over. The lower support 9 is a T-shaped plane plate body, the upper part with large width and the lower part with small width, the lower part of the T-shaped plane plate body is fixed with the hydraulic cylinder 3, the upper part of the T-shaped plane plate body is provided with a plurality of limiting holes 10, and the limiting holes are distributed in an axisymmetric manner by taking the lower part of the T-shaped plane plate body as a symmetry axis; the shape of upper bracket 4 is the same with lower carriage 9, and the lower extreme of the T type plane plate body of upper bracket passes through articulated elements 5 with the lower extreme of lower carriage T type plane plate body and articulates, makes upper bracket 4 pass through articulated elements 5 and rotates, can overlap and part with the face of lower carriage 9, shows the structural style of above-mentioned fixed bolster in the figure, but does not get rid of the structural shape of other fixed bolsters and also can realize the utility model discloses.
The realization process is as follows: when a pipe 11 of a certain specification is bent, the upper support 4 and the lower support 9 are separated, the limiting holes of the lower support 9 are selected to be installed on the guide wheels 8, the lower ends 84 of the shafts of the two guide wheels 8 are installed on the limiting holes 10 of the lower support 9, then the pipe 11 is placed between the two guide wheels 8 and the die 7, the upper support 4 covers the lower support 9, the limiting holes 10 of the upper support 4 are sleeved with the upper ends 81 of the shafts of the guide wheels 8, so that the operation of placing the pipe 11 to be bent on the pipe bender is completed, and then the pipe bending work is completed through the piston movement of the hydraulic cylinder 3 under the control of the power unit 1. After the bending work is finished, the power unit 1 controls the piston rod of the hydraulic cylinder 3 to retract, the upper support 4 is uncovered from the lower support 9, and the bent pipe is taken out, so that the whole operation process can be finished.
On the basis of the above embodiment, the included angle formed by intersecting the extension lines of the plurality of limiting holes is greater than 150 degrees and less than 170 degrees, and the included angle is the included angle of the piston rod in the axial direction. Therefore, the position between the two guide wheels can be better adjusted, the positions of the first force application point and the second force application point are better, and the bending of pipes with different specifications is facilitated.
On the basis of the above embodiment, the mold is connected with the piston rod of the hydraulic cylinder 3 through the detachable mold holder 6, which facilitates the replacement of the mold 7.
On the basis of the above embodiments, the die 7 of the present invention may be a commercially available die for bending pipes, such as: the mould is provided with two plates with semicircular shapes, and a tracing track for bending the pipe is arranged between the two plates.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (8)

1. The simple pipe bender comprises a power unit, a hydraulic cylinder, a die and a fixed support, and is characterized in that the fixed support is provided with two guide wheels and a plurality of limiting holes for selecting installation positions for the guide wheels, and the two guide wheels are used for providing a first force application point and a second force application point for bending a pipe;
the force application end of the die is provided with a tracing track for bending the pipe and is used for providing a third force application point for bending the pipe at a position between the two guide wheels, the die is arranged on a symmetrical shaft of the two guide wheels and is connected with a piston rod of a hydraulic cylinder, a fixing support is fixed with the hydraulic cylinder, the pipe is arranged between the two guide wheels and the die, and the hydraulic cylinder is controlled by a power unit and completes the bending work of the pipe through the movement of the piston of the hydraulic cylinder;
the plurality of limiting holes are distributed in an axisymmetric manner by taking the axial direction of the piston rod as a symmetry axis, and the plurality of limiting holes are sequentially arranged in a direction away from the symmetry axis.
2. The simple pipe bender according to claim 1, wherein the fixed support comprises an upper support and a lower support, the upper support and the lower support are provided with the plurality of limiting holes, the two guide wheels are installed between the upper support and the lower support through the limiting holes, the plurality of limiting holes on the upper support are at least 4, and the plurality of limiting holes on the lower support are distributed in the same way as the plurality of limiting holes on the upper support and correspond to each other.
3. The simple bender according to claim 2, wherein the upper support is hinged to the lower support through a hinge, and the lower support is fixed to the hydraulic cylinder.
4. The simple pipe bender according to claim 3, wherein the lower support is a T-shaped plane plate, the upper portion is the upper portion with a large width, the lower portion is the lower portion with a small width, the lower portion of the T-shaped plane plate is fixed to the hydraulic cylinder, the upper portion of the T-shaped plane plate is provided with the plurality of limiting holes, and the plurality of limiting holes are axially and symmetrically distributed with the lower portion of the T-shaped plane plate as a symmetry axis; the upper bracket is the same as the lower bracket in shape, and the lower end of the T-shaped plane plate body of the upper bracket is hinged with the lower end of the T-shaped plane plate body of the lower bracket through a hinge piece, so that the upper bracket rotates through the hinge piece and is overlapped with and separated from the plate surface of the lower bracket.
5. The simple pipe bender according to claim 4, wherein the included angle formed by the intersecting lines of the arrangement of the plurality of limiting holes is larger than 150 ° and smaller than 170 °, and the included angle is the included angle of the axial direction of the piston rod.
6. The simple bender according to claim 5, wherein the mold is connected to the piston rod of the hydraulic cylinder by a detachable mold holder.
7. The simple bender according to any of claims 1-6, wherein the mold has two plates with a semicircular shape, and a curved track is disposed between the two plates.
8. The simple pipe bender according to any of the claims 2-6, wherein the guide wheel comprises a shaft, a bearing and a wheel body of the guide wheel, the wheel body is a cylinder-like shape with a small middle and large two ends; the bearing is arranged on an intermediate shaft line of the wheel body, the shaft is sleeved in the bearing, the upper end of the shaft is installed on the limiting hole of the upper support, and the lower end of the shaft is installed on the limiting hole of the lower support.
CN202020188884.9U 2020-02-20 2020-02-20 Simple pipe bender Active CN211990382U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020188884.9U CN211990382U (en) 2020-02-20 2020-02-20 Simple pipe bender

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020188884.9U CN211990382U (en) 2020-02-20 2020-02-20 Simple pipe bender

Publications (1)

Publication Number Publication Date
CN211990382U true CN211990382U (en) 2020-11-24

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Application Number Title Priority Date Filing Date
CN202020188884.9U Active CN211990382U (en) 2020-02-20 2020-02-20 Simple pipe bender

Country Status (1)

Country Link
CN (1) CN211990382U (en)

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