阅读说明：本技术 一种塑料管件弯管加工装置及加工方法 (Plastic pipe fitting bending device and method ) 是由 邹建军 叶忠会 姜涛 李良军 邓玉峰 于 2020-06-30 设计创作，主要内容包括：本发明涉及管材加工技术领域,具体涉及一种塑料管件弯管加工装置及加工方法；采用的技术方案是：弧形模上端设有用于容纳塑料管件的形变槽,所述形变槽槽口设有固定组件,所述固定组件沿形变槽长度方向间隔分布；还包括与流体供给系统相连的第一接头和第二接头,所述第一接头和第二连接用于连接塑料管件的两端,所述流体供给系统用于给塑料管件输入热流体或冷流体。本发明通过流体供给系统给塑料管件输入热流体,以对塑料管件加热使其软化逐渐与形变槽贴合,然后利用固定组件固定塑料管件并给塑料管材内通入常温流体以冷却定型,待完全定型后拆下弯曲塑料管件即可,具有结构简单、操作简单和效率高的特点,能够对已成型的塑料管件进行弯管加工。(The invention relates to the technical field of pipe processing, in particular to a device and a method for processing a plastic pipe elbow; the technical scheme is as follows: the upper end of the arc-shaped die is provided with a deformation groove for accommodating the plastic pipe fitting, the notch of the deformation groove is provided with fixing components, and the fixing components are distributed at intervals along the length direction of the deformation groove; the plastic pipe fitting is characterized by further comprising a first connector and a second connector which are connected with a fluid supply system, wherein the first connector and the second connector are used for connecting two ends of the plastic pipe fitting, and the fluid supply system is used for inputting hot fluid or cold fluid to the plastic pipe fitting. According to the invention, hot fluid is input into the plastic pipe fitting through the fluid supply system to heat the plastic pipe fitting so as to enable the plastic pipe fitting to be softened and gradually fit with the deformation groove, then the plastic pipe fitting is fixed by the fixing assembly, normal-temperature fluid is introduced into the plastic pipe fitting to be cooled and shaped, and the bent plastic pipe fitting is detached after the plastic pipe fitting is completely shaped.)

1. The plastic pipe fitting bending device comprises an arc die (1), and is characterized in that a deformation groove (2) for accommodating a plastic pipe fitting (16) is formed in the upper end of the arc die (1), and the deformation groove (2) is bent into an arc shape along the length direction of the arc die (1);

a plurality of fixing assemblies (3) for fixing plastic pipe fittings (16) are arranged at the notch of the deformation groove (2), and the fixing assemblies (3) are distributed at intervals along the length direction of the deformation groove (2);

the plastic pipe fitting is characterized by further comprising a first connector (4) and a second connector (5) which are connected with a fluid supply system, wherein the first connector (4) and the second connector are connected with two ends of the plastic pipe fitting (16) in a connecting mode, and the fluid supply system is used for inputting hot fluid or cold fluid into the plastic pipe fitting (16).

2. The plastic pipe elbow processing device according to claim 1, further comprising a supporting spring (6) used in cooperation, wherein the supporting spring (6) is used for supporting the inner wall of the plastic pipe (16).

3. The plastic pipe elbow machining device according to claim 1, characterized in that the fluid supply system comprises a hot fluid tank (7), a cold fluid tank (8); outlets of the hot fluid tank (7) and the cold fluid tank (8) are connected with a liquid inlet reversing valve (9), and inlets of the hot fluid tank (7) and the cold fluid tank (8) are connected with the second joint (5) through a liquid return reversing valve (17); the reversing valve (9) is connected with the first joint (4), and a circulating pump (10) is arranged between the first joint (4) and the reversing valve (9).

4. The plastic pipe elbow machining device according to the claim 3, characterized in that a heating module (11) is arranged in the hot fluid tank (7).

5. The plastic pipe bending device according to claim 1, wherein the first joint (4) and the second joint (5) each comprise a socket, one end of the socket is open, the other end of the socket is provided with a connecting portion (13), a sealing ring (14) is arranged in the socket, and the sealing ring (14) is used for sealing a gap between the socket and the plastic pipe (16).

6. The plastic pipe elbow processing device according to claim 5, wherein the material of the sealing ring (14) is polytetrafluoroethylene rubber.

7. The plastic pipe elbow machining device according to the claim 5, characterized in that the open end of the sleeve is provided with a guiding cone section (15).

8. The plastic pipe elbow processing device according to claim 1, characterized in that the cross section of the deformation groove (2) is semicircular.

9. The plastic pipe elbow machining device according to claim 1, characterized in that the fixing component (3) is an arc-shaped buckle component.

10. The plastic pipe fitting bending method is characterized by comprising the following steps:

connecting the lower end of the plastic pipe fitting to be processed with an outlet of a fluid supply system, and fixing one end of the plastic pipe fitting to be processed at one end of the deformation groove;

inserting a support spring from the upper end of the plastic pipe to be processed and connecting the upper end of the plastic pipe to be processed with an inlet of a fluid process system;

inputting hot fluid to the plastic pipe fitting to be processed through a fluid supply system to soften the plastic pipe fitting, and attaching the softened plastic pipe fitting to the deformation groove;

fixing the softened plastic pipe fitting in the deformation groove;

and after the softened plastic pipe fitting is completely attached to the deformation groove, inputting cold fluid or normal-temperature fluid to the plastic pipe fitting through the fluid supply system, and cooling and shaping the plastic pipe fitting.

Technical Field

The invention relates to the technical field of pipe machining, in particular to a device and a method for machining a plastic pipe elbow.

Background

In order to meet the use requirement, the pipeline is often required to be bent, but due to the characteristics of the plastic pipeline and the rubber pipeline, a bent piece is not easy to manufacture. At present, plastic bent pipes are generally manufactured by adopting integrated forming equipment, such as an injection molding machine, a compressor, an extruder, a die casting machine and the like, particularly, in the forming process of a plastic bent part, plastic raw materials are required to be heated into a molten state firstly and then injected into a mold for forming, the process is complex and is only suitable for large-scale production, and the plastic bent pipe is not suitable for bending formed plastic pipelines according to specific requirements.

Disclosure of Invention

Aiming at the technical problem that the existing processing equipment is difficult to bend the formed plastic pipeline, the invention provides the plastic pipe bending device and the processing method, which can bend the formed plastic pipeline and have the characteristics of simple structure, simple operation and high efficiency.

The invention is realized by the following technical scheme:

a plastic pipe fitting bending device comprises an arc-shaped die, wherein a deformation groove for accommodating a plastic pipe fitting is formed in the upper end of the arc-shaped die, and the deformation groove is bent into an arc shape along the length direction of the arc-shaped die; the notch of the deformation groove is provided with a plurality of fixing components for fixing the plastic pipe fittings, and the fixing components are distributed at intervals along the length direction of the deformation groove; the plastic pipe fitting is characterized by further comprising a first connector and a second connector which are connected with a fluid supply system, wherein the first connector and the second connector are used for connecting two ends of the plastic pipe fitting, and the fluid supply system is used for inputting hot fluid or cold fluid to the plastic pipe fitting.

When the pipe bending machine is used for pipe bending, one end of the plastic pipe is fixed at one end of the deformation groove through the fixing component, and hot fluid is input into the plastic pipe through the fluid supply system to heat and soften the plastic pipe, so that the plastic pipe is gradually attached to the deformation groove under the actions of the self weight of the plastic pipe, the gravity of the hot fluid and/or the assistance of external force; and then fixing the plastic pipe fitting by using the fixing assembly until the plastic pipe fitting is completely attached in the deformation groove. At the moment, normal temperature fluid is introduced into the bent plastic pipe through the switching pipeline to be cooled and shaped, and the bent plastic pipe fitting is detached after complete shaping and cooling. The deformation groove can be made into grooves with different radiuses and arc lengths according to the requirement so as to process bent pipes with different radiuses and arc lengths and meet the customized requirement.

Furthermore, the plastic pipe bending device further comprises a supporting spring which is used in a matched mode, wherein the supporting spring is used for supporting the inner wall of the plastic pipe, namely when the plastic pipe is bent, the supporting spring with the outer diameter matched with the plastic pipe to be processed is inserted into the supporting spring, so that the supporting spring can provide support for the plastic pipe when the plastic pipe is bent and deformed, and then the phenomenon that the surface of the plastic pipe is sunken and wrinkled in the bending process to influence the effect and the quality of the bent pipe is avoided.

As a specific embodiment of the fluid supply system, the fluid supply system comprises a hot fluid tank and a cold fluid tank; outlets of the hot fluid tank and the cold fluid tank are connected with a liquid inlet reversing valve, and inlets of the hot fluid tank and the cold fluid tank are connected with a second joint through a liquid return reversing valve; the reversing valve is connected with the first joint, and a circulating pump is arranged between the first joint and the reversing valve so as to control the circulating pump to circulate hot fluid or cold fluid through reversing of the reversing valve.

Furthermore, a heating module is arranged in the hot fluid box to heat and preserve heat of the fluid.

As specific implementation modes of the first joint and the second joint, the first joint and the second joint respectively comprise a sleeve joint cylinder, one end of the sleeve joint cylinder is open, the other end of the sleeve joint cylinder is provided with a connecting part, a sealing ring is arranged in the sleeve joint cylinder, and the sealing ring is used for sealing a gap between the sleeve joint cylinder and the plastic pipe fitting. When the plastic pipe fitting sealing device is used, the plastic pipe fitting is directly inserted into the sleeve joint cylinder, the sealing ring has certain elasticity, and the sealing effect can be still achieved after the plastic pipe fitting deforms.

Preferably, the material of the sealing ring is polytetrafluoroethylene rubber, so that the friction between the sealing ring and the plastic pipe fitting is reduced by utilizing the self-lubricating property of polytetrafluoroethylene, and the sufficient service life of the sealing ring can be ensured while the surface quality of the end part of the plastic pipe fitting is ensured.

Preferably, the open end of the sleeve joint barrel is provided with a guide taper section so that the end part of the plastic pipe fitting can be conveniently inserted into the sleeve joint barrel.

Specifically, the cross section of the deformation groove is semicircular to ensure that the plastic pipe fitting can be completely attached to the deformation groove after being deformed.

As a specific embodiment of the fixing assembly, the fixing assembly is an arc-shaped buckle assembly to realize rapid fixing and detachment of the plastic pipe fitting.

The invention also provides a plastic pipe bending method, which comprises the following steps:

connecting the lower end of the plastic pipe fitting to be processed with an outlet of a fluid supply system, and fixing one end of the plastic pipe fitting to be processed at one end of the deformation groove;

inserting a support spring from the upper end of the plastic pipe to be processed and connecting the upper end of the plastic pipe to be processed with an inlet of a fluid process system;

inputting hot fluid to the plastic pipe fitting to be processed through a fluid supply system to soften the plastic pipe fitting, and attaching the softened plastic pipe fitting to the deformation groove;

fixing the softened plastic pipe fitting in the deformation groove;

after the softened plastic pipe fitting is completely attached to the deformation groove, inputting cold fluid or normal-temperature fluid to the plastic pipe fitting through a fluid supply system, and cooling and shaping the plastic pipe fitting;

and taking the plastic pipe fitting out of the deformation groove, and bending the completely shaped plastic pipe fitting.

The invention has the beneficial effects that:

1. inputting hot fluid into the plastic pipe fitting through a fluid supply system to heat and soften the plastic pipe fitting, so that the plastic pipe fitting is gradually attached to the deformation groove under the actions of the self weight of the plastic pipe fitting, the gravity of the hot fluid and/or the assistance of external force; then fixing the plastic pipe fitting by using the fixing component until the plastic pipe fitting is completely attached in the deformation groove; at the moment, normal temperature fluid is introduced into the bent plastic pipe through the switching pipeline to be cooled and shaped, and the bent plastic pipe fitting is detached after complete shaping and cooling.

2. The deformation groove can be made into grooves with different radiuses and arc lengths according to the requirements so as to process bent pipes with different radiuses and arc lengths and meet the customized requirements.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic view of an arcuate mold structure of the present invention;

FIG. 2 is a schematic diagram of the piping connection of the present invention;

FIG. 3 is a schematic view of a joint structure of the present invention;

fig. 4 is a schematic structural diagram of the fixing assembly of the present invention.

Reference numbers and corresponding part names in the drawings:

1-arc mould, 2-deformation groove, 3-fixed component, 4-first joint, 5-second joint, 6-support spring, 7-hot fluid tank, 8-cold fluid tank, 9-liquid inlet reversing valve, 10-circulating pump, 11-heating module, 12-sleeve, 13-connecting part, 14-sealing ring, 15-guide cone section, 16-plastic pipe fitting and 17-liquid return reversing valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.