CN112109315A

CN112109315A - Pipe bending device

Info

Publication number: CN112109315A
Application number: CN202011035706.3A
Authority: CN
Inventors: 张建林; 张文国
Original assignee: Beijing Feihangjida Aviation Technology Co ltd
Current assignee: Beijing Feihangjida Aviation Technology Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2020-12-22

Abstract

The invention provides a pipe bending device which comprises a pipe bending die, wherein the pipe bending die comprises a crease-resistant die and a boosting die, a first heating hole is formed in the crease-resistant die, a second heating hole is formed in the boosting die, the pipe bending device further comprises a first heating part, a second heating part and a temperature detection part, the first heating part is installed in the first heating hole, the second heating part is installed in the second heating hole, and the temperature detection part is installed on the crease-resistant die and used for detecting the temperature of the crease-resistant die. Can realize the heating to the tubular product that is in bending mould department to improve the ductility of the nonmetal pipeline material of stereoplasm thermoplasticity, prevent to take place fold and fracture in the bending process, meanwhile, guarantee that the heating temperature of bending mould can not be too high or low excessively, both can improve the return bend quality, also can avoid the impaired of the nonmetal pipeline material of stereoplasm thermoplasticity.

Description

Pipe bending device

Technical Field

The invention relates to the technical field of hot bending forming of hard thermoplastic nonmetal pipelines, in particular to a pipe bending device.

Background

Because the hard thermoplastic non-metallic pipeline material belongs to linear high molecular polymer, the breakage, the fold, the angle and the bending radius are not in accordance with the requirements in the bending process, and the reason for the breakage is that the hard thermoplastic non-metallic pipeline does not have the ductility of a metallic material pipeline, at present, when the hard thermoplastic non-metallic pipeline is bent and formed, the cold bending forming process is adopted, the bent product does not satisfy the requirements of equipment, particularly an airplane on the angle, the bending radius and the like of the pipeline, and specifically, the bent hard thermoplastic non-metallic pipeline is difficult to realize the product surface, the inner wall is smooth, the product quality and the internal liquid flow are influenced, the product surface and the inner wall are seriously folded, the pipe wall is unevenly thinned, the material cost is improved, and the qualified.

Disclosure of Invention

The invention mainly aims to provide a pipe bending device to solve the problem that a rigid thermoplastic non-metal pipeline is easy to break and wrinkle when being bent in the prior art.

In order to achieve the purpose, the invention provides a pipe bending device which comprises a pipe bending die, wherein the pipe bending die comprises a crease-resistant die and a boosting die, a first pipe groove is formed in the crease-resistant die, a second pipe groove is formed in the boosting die, the first pipe groove and the second pipe groove are arranged oppositely and used for clamping a pipeline to be bent, a first heating hole is formed in the crease-resistant die, a second heating hole is formed in the boosting die, the pipe bending device further comprises a first heating part, a second heating part and a temperature detection part, the first heating part is installed in the first heating hole, the second heating part is installed in the second heating hole, and the temperature detection part is installed on the crease-resistant die and used for detecting the temperature of the crease-resistant die.

Furthermore, the extending direction of the first heating hole is parallel to the extending direction of the first pipe groove, the first heating part comprises an electric heating rod, and the electric heating rod is arranged in the first heating hole in a penetrating mode.

Further, first heated hole and electric heating rod are a plurality ofly, and a plurality of first heated holes set up along vertical direction interval, and a plurality of first heated holes set up with a plurality of electric heating rod one-to-one.

Furthermore, the extending direction of the second heating hole is parallel to the extending direction of the second pipe groove, the second heating part comprises an oil temperature heating system, and the oil temperature heating system is communicated with the inside of the second heating hole.

Further, the second heating holes are multiple, and the multiple second heating holes are communicated with each other.

Further, a mounting hole is formed in the crease-resistant die, the temperature detection portion comprises a thermocouple, and the thermocouple is mounted in the mounting hole.

Further, the pipe bending device comprises a control part, the electric heating rod is electrically connected with the control part, the thermocouple is electrically connected with the control part, and the temperature of the electric heating rod is adjustable.

Further, the pipe bending device further comprises a die temperature controller, and the die temperature controller is communicated with the oil temperature heating system.

Furthermore, the pipe bending device further comprises a machine body and a boosting motor, the pipe bending die and the boosting motor are both mounted on the machine body, and the output end of the boosting motor is in driving connection with the boosting die.

Furthermore, an oil guide channel is arranged on the boosting die, an opening is formed in the second pipe groove at the first end of the oil guide channel, and the second end of the oil guide channel is selectively communicated with the oil temperature heating system.

By applying the technical scheme, the pipe bending device comprises the first heating part and the second heating part, the first heating part and the second heating part are respectively installed inside the crease-resistant die and the boosting die and can be used for heating the crease-resistant die and the boosting die, so that a pipe positioned at the pipe bending die can be heated, the ductility of a hard thermoplastic non-metal pipeline material is improved, the crease and the breakage in the bending process are prevented, the area to be bent of the pipe is heated through the crease-resistant die and the boosting die, the heat can be directly transferred to the area to be bent, the waste of the heat is avoided, and the damage to the area not required to be bent can also be avoided. Meanwhile, the temperature detection part can detect the temperature of the crease-resistant die in real time, the control of the temperature is facilitated, the heating temperature of the pipe bending die is guaranteed not to be too high or too low, the quality of the bent pipe can be improved, and the damage of hard thermoplastic nonmetal pipeline materials can be avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 schematically illustrates a front view of an embodiment of the elbow device of the present invention;

FIG. 2 schematically illustrates a top view of an embodiment of the elbow device of the present invention;

fig. 3 schematically shows a block diagram at a bending mold of the pipe bending apparatus in the present invention;

FIG. 4 is a view schematically showing the construction of a wrinkle preventing mold in the present invention;

fig. 5 schematically shows a structural view of the booster mold in the present invention.

Wherein the figures include the following reference numerals:

10. a body; 20. a pipe bending die; 21. a crease-resist mould; 211. a first pipe groove; 22. boosting the mould; 221. a second pipe groove; 23. a first heating hole; 24. a second heating hole; 25. mounting holes; 30. a boosting motor.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As described in the background art, the hard thermoplastic non-metallic pipeline material belongs to a linear high molecular polymer, breakage, folding, angle and bending radius are not satisfactory in the bending process, and the reason is that the hard thermoplastic non-metallic pipeline does not have the ductility of a metallic pipeline, at present, when the hard thermoplastic non-metallic pipeline is bent and formed, the hard thermoplastic non-metallic pipeline is a cold bending forming process, and a bent product does not meet the requirements of equipment, particularly an airplane, on the angle, the bending radius and the like of the pipeline, and specifically, the bent hard thermoplastic non-metallic pipeline is difficult to realize the smoothness of the surface and the inner wall of the product, influences the quality of the product and the internal liquid flow rate, and is reflected in that the surface and the inner wall of the product are seriously folded, the pipe wall is unevenly thinned, the material.

In order to solve the above problems, referring to fig. 1 to 5, an embodiment of the present invention provides a pipe bending apparatus, including a pipe bending mold 20, where the pipe bending mold 20 includes a wrinkle-resistant mold 21 and a boosting mold 22, a first pipe groove 211 is disposed on the wrinkle-resistant mold 21, a second pipe groove 221 is disposed on the boosting mold 22, the first pipe groove 211 and the second pipe groove 221 are disposed opposite to each other for clamping a pipe to be bent, a first heating hole 23 is disposed inside the wrinkle-resistant mold 21, a second heating hole 24 is disposed inside the boosting mold 22, the pipe bending apparatus further includes a first heating portion, a second heating portion, and a temperature detecting portion, the first heating portion is installed in the first heating hole 23, the second heating portion is installed in the second heating hole 24, and the temperature detecting portion is installed on the wrinkle-resistant mold 21 for detecting a temperature of the wrinkle-resistant mold 21. The pipe bending device comprises the first heating part and the second heating part, wherein the first heating part and the second heating part are respectively installed inside the crease-resistant die and the boosting die and can be used for heating the crease-resistant die and the boosting die, so that a pipe positioned at the pipe bending die can be heated, the ductility of a rigid thermoplastic nonmetal pipeline material is improved, the crease and the breakage in the bending process are prevented, a to-be-bent area of the pipe is heated through the crease-resistant die and the boosting die, the heat can be directly transmitted to the to-be-bent area, the heat waste is avoided, and the damage to the area which does not need to be bent can also be avoided. Meanwhile, the temperature detection part can detect the temperature of the crease-resistant die in real time, the control of the temperature is facilitated, the heating temperature of the pipe bending die is guaranteed not to be too high or too low, the quality of the bent pipe can be improved, and the damage of hard thermoplastic nonmetal pipeline materials can be avoided.

The crease-resistant die 21 and the boosting die 22 are conventional parts of the existing pipe bender, the crease-resistant die is used for propping against the tangent point position of the wheel die, so that the inner side of the pipeline is smoothly transited when being bent, steps or wrinkles are not generated, and the boosting die is used for assisting the pipeline to advance and bend in the bending process, so that the outer side of the bent pipeline is uniformly stretched.

Because the area that tubular product and crease-resistance mould contacted is mainly in first tube seat department, in order to make the heat of first tube seat length direction even, the extending direction of first heating hole 23 in this embodiment is parallel with the extending direction of first tube seat 211, and first heating portion includes the electric heating stick, and the electric heating stick is worn to establish in first heating hole 23. Realize the heating to the crease-resistance mould through the electrical heating stick, and then realize the heating to tubular product, because the electrical heating stick is installed in first heated hole, the extending direction in first heated hole is the same with the extending direction in first tube seat, can realize the even heating of first tube seat extending direction for tubular product is heated evenly.

In order to improve the heating efficiency of the wrinkle-resistant mold, the first heating holes 23 and the electric heating rods in this embodiment are both plural, the plural first heating holes 23 are arranged at intervals in the vertical direction, and the plural first heating holes 23 and the plural electric heating rods are arranged in one-to-one correspondence. During operation, a plurality of electric heating rods of accessible heat the crease-resistance mould jointly, improve heating efficiency, and a plurality of heated holes set up along vertical direction interval simultaneously, also can make the vertical heating of first tube seat inner wall comparatively even.

Preferably, the connecting line of the hole centers of the plurality of first heating holes can also be parallel to the inner wall of the first pipe groove, so that the longitudinal heating of the inner wall of the first pipe groove is more uniform.

In order to uniformly heat the boosting mold, the extending direction of the second heating hole 24 in this embodiment is parallel to the extending direction of the second pipe groove 221, and the second heating portion includes an oil temperature heating system, which is communicated with the inside of the second heating hole 24. The extending direction of the second heating hole is parallel to the extending direction of the second pipe groove, so that the transverse heating of the inner wall of the second pipe groove is more uniform.

Preferably, in order to ensure the heating uniformity of the boost mold, the second heating holes 24 in the present embodiment are plural, and the plural second heating holes 24 are communicated with each other. Can realize the multizone to the synchro heating of boosting mould through setting up a plurality of second heated holes, and communicate each other between a plurality of second heated holes, then can guarantee the mobility of fluid, preferably, a plurality of second heated holes set up along vertical direction interval for the vertical heating of second tube seat is more even.

Specifically, the wrinkle preventing die 21 in the present embodiment is provided with a mounting hole 25 therein, and the temperature detecting part includes a thermocouple mounted in the mounting hole 25. The detection of the crease-resistant die is realized through the thermocouple, and of course, in other embodiments, other equipment can be adopted for temperature detection, and any equipment can be adopted as long as the accurate detection of the temperature of the crease-resistant die can be met.

In order to realize the temperature control of the anti-wrinkling module, the pipe bending device in the embodiment comprises a control part, an electric heating rod is electrically connected with the control part, a thermocouple is electrically connected with the control part, and the temperature of the electric heating rod is adjustable. Wherein, the control part is the temperature control case that has the controller, and after the thermocouple detected the temperature of crease-resistance module and reached predetermined temperature, temperature control case control electrical heating stick reduced heating power or closed, when needs heating tubular product, through the work of temperature control case control electrical heating stick, heats the crease-resistance module.

In order to realize the oil temperature control of the oil temperature heating system, the pipe bending device in the embodiment further comprises a die temperature controller, and the die temperature controller is communicated with the oil temperature heating system.

Specifically, the pipe bending device in this embodiment further includes a machine body 10 and a boosting motor 30, the pipe bending die 20 and the boosting motor 30 are both mounted on the machine body 10, and an output end of the boosting motor 30 is drivingly connected to the boosting die 22.

The boosting mold 22 in this embodiment is provided with an oil guiding channel, a first end of the oil guiding channel is provided with an opening on the second pipe groove 221, and a second end of the oil guiding channel is selectively communicated with the oil temperature heating system. When the friction between the second pipe groove and the pipe is too large, the oil can be added between the second pipe groove and the pipe through the oil guide channel, so that the friction is reduced, and the feeding and the rotation of the pipe are smoother.

Wherein, crease-resistant mould material is copper, because crease-resistant mould is that the copper product has wearing and tearing in practical application, often will carry out secondary operation, so can only be with the heating rod heating of automatic heating case control, and the coefficient of heat conductivity of brass is high moreover, the temperature of mould just more balanced transmission to the nonmetal tubular product of stereoplasm thermoplasticity like this, the boosting mould is H13 quenching, the boosting mould is the mould steel material, for making the temperature of the nonmetal pipeline of stereoplasm thermoplasticity balanced, so adopt the oil temperature machine to heat. Of course, the mould material of the crease-resistant mould heating system can also adopt materials such as aluminum alloy and the like; in the present embodiment, the second heating part may be a heating pipe, but the effect is not as stable as heating with oil temperature.

The bending device adopts a CNC full-automatic servo operation system, and a bending machine is transformed, wherein the bending machine comprises a bending device boosting system, a feeding system, a bending system and 4 corner systems which adopt servo operation. And selecting corresponding bending dies, crease-resist dies, boosting dies, clamping dies, core rods and the like to be installed on the bending device according to the pipe diameter, the wall thickness, the angle and the bending radius required by the drawing. Relevant parameters are set according to an operation process and a product drawing, and mainly comprise crease-resist die temperature, boosting die temperature, bending speed, boosting speed, feeding speed, corner speed, heating time, cooling and shaping time, feeding position, bending angle, corner angle and the like, and the set parameters are shown in table 1. And finally, fully automatically bending the rigid thermoplastic non-metal pipeline according to the operation process and the set parameters.

Table 1: setting parameters of various materials

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the pipe bending device comprises the first heating part and the second heating part, wherein the first heating part and the second heating part are respectively installed inside the crease-resistant die and the boosting die and can be used for heating the crease-resistant die and the boosting die, so that a pipe positioned at the pipe bending die can be heated, the ductility of a rigid thermoplastic nonmetal pipeline material is improved, the crease and the breakage in the bending process are prevented, a to-be-bent area of the pipe is heated through the crease-resistant die and the boosting die, the heat can be directly transmitted to the to-be-bent area, the heat waste is avoided, and the damage to the area which does not need to be bent can also be avoided. Meanwhile, the temperature detection part can detect the temperature of the crease-resistant die in real time, the control of the temperature is facilitated, the heating temperature of the pipe bending die is guaranteed not to be too high or too low, the quality of the bent pipe can be improved, and the damage of hard thermoplastic nonmetal pipeline materials can be avoided.

It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the foregoing detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like numerals typically identify like components, unless context dictates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations, all of which are explicitly contemplated herein.

The present disclosure in accordance with certain embodiments described herein is not to be limited in scope by the specific aspects illustrated. As will be apparent to those skilled in the art, many modifications and variations are possible without departing from the spirit and scope of the disclosure. Functionally equivalent methods and apparatuses, in addition to those enumerated herein, will be apparent to those skilled in the art from the foregoing description, within the scope of the present disclosure. Such modifications and variations are intended to fall within the scope of the appended claims. The disclosure is to be limited only by the terms of the appended claims, along with the full scope of equivalents to which such claims are entitled. It is to be understood that this disclosure is not limited to particular methods, reagents, compounds, compositions or biological systems, which can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The pipe bending device comprises a pipe bending die (20), wherein the pipe bending die (20) comprises a crease-resistant die (21) and a boosting die (22), a first pipe groove (211) is formed in the crease-resistant die (21), a second pipe groove (221) is formed in the boosting die (22), the first pipe groove (211) and the second pipe groove (221) are arranged oppositely and used for clamping a pipeline to be bent, and the pipe bending device is characterized in that,

crease-resistance mould (21) inside is provided with first hole for heating (23), inside second hole for heating (24) that is provided with of boosting mould (22), swan neck system still includes first heating portion, second heating portion and temperature-detecting portion, first heating portion installs in first hole for heating (23), the second heating portion is installed in second hole for heating (24), temperature-detecting portion installs on crease-resistance mould (21), it is right to be used for the temperature of crease-resistance mould (21) detects.

2. The tube bending apparatus according to claim 1, wherein an extending direction of the first heating hole (23) is parallel to an extending direction of the first tube groove (211), and the first heating part includes an electric heating rod which is inserted into the first heating hole (23).

3. The tube bending device according to claim 2, wherein the first heating holes (23) and the electric heating rods are plural, the plural first heating holes (23) are arranged at intervals in a vertical direction, and the plural first heating holes (23) are arranged in one-to-one correspondence with the plural electric heating rods.

4. The tube bending apparatus according to claim 1, wherein an extending direction of the second heating hole (24) is parallel to an extending direction of the second tube bath (221), and the second heating section includes an oil temperature heating system that communicates with an inside of the second heating hole (24).

5. The elbow device according to claim 1, wherein the second heating hole (24) is plural, and the plural second heating holes (24) communicate with each other.

6. The tube bending apparatus according to claim 2, wherein a mounting hole (25) is provided inside the wrinkle preventing die (21), and the temperature detecting portion includes a thermocouple installed in the mounting hole (25).

7. The tube bending device according to claim 6, wherein the tube bending device comprises a control portion, the electric heating rod is electrically connected with the control portion, the thermocouple is electrically connected with the control portion, and the temperature of the electric heating rod is adjustable.

8. The tube bending device according to claim 4, further comprising a die temperature machine in communication with the oil temperature heating system.

9. The pipe bending device according to claim 4, further comprising a body (10) and a boosting motor (30), wherein the pipe bending die (20) and the boosting motor (30) are both mounted on the body (10), and an output end of the boosting motor (30) is in driving connection with the boosting die (22).

10. The pipe bending device according to claim 9, wherein an oil guide channel is arranged on the boosting die (22), a first end of the oil guide channel is provided with an opening on the second pipe groove (221), and a second end of the oil guide channel is selectively communicated with the oil temperature heating system.