Elbow pushing and pulling tool

Abstract

The utility model is applicable to the technical field of polytetrafluoroethylene tube processing, and provides a pushing and pulling elbow tool which comprises a base, wherein a forming component is mounted on the inner wall of the base; the method comprises the following steps that 1, a rolling ball can freely rotate in a bent pipe forming shell according to the flowing principle of the rolling ball; secondly, the chain section plates are spliced to serve as mold cores to penetrate through the centers of the rolling balls, so that one-way transmission is achieved; 3, baking the elbow through a baking oven, putting the polytetrafluoroethylene pipe sleeved with the tool into an elbow forming shell to be pushed, applying pressure by a press on one hand, and drawing through the tool on the other hand, so that the compression molding result of the polytetrafluoroethylene pipe in the elbow is achieved; and 4, finally, the polytetrafluoroethylene pipe exposed out of the head face of the elbow flange is baked, a colander-shaped sharp top head is used for pressing the softened polytetrafluoroethylene pipe to form an angle, then a manufactured flat top head is used for pushing and pressing through an air cylinder, therefore, the turned edge of the polytetrafluoroethylene pipe is compacted, and finally the complete pushing and pressing turned edge elbow is obtained.

Description

Technical Field

[0001] The utility model belongs to the technical field of polytetrafluoroethylene tube processing, in particular to a pushing and pulling elbow tool. Background Art

[0002] The polytetrafluoroethylene pipe is a high-quality plunger extrusion pipe. It uses a special processing technology to make the steel pipe and the plastic pipe tightly combined. It can withstand a positive pressure of 1.6Mpa and a negative pressure of 77Kpa. It can be used normally within -60℃~+260℃ and has reliable and excellent corrosion resistance. It can transport highly corrosive gases and liquids at high temperatures, which cannot be replaced by other pipes.

[0003] In the conventional pushing process, it is very easy for the internal stress of the elbow to be large, which may cause the PTFE tube to break, especially at the stage when the mold is about to be pushed out and the PTFE elbow is about to be formed. Utility Model Content

[0004] The utility model provides a push-pull elbow tooling, which aims to solve the problem that in the conventional pushing process, the internal stress of the elbow is very high, which leads to the breakage of the PTFE tube, especially in the final stage when the mold is about to be pushed out and the PTFE elbow is about to be formed. The utility model is implemented as follows: the push-pull elbow tooling includes a base: the inner wall of the base is installed with a forming component, the forming component includes a bend forming shell, and the two ends of the bend forming shell are connected with flange heads;

[0005] The inner wall of the bent tube forming shell is provided with a plurality of rolling balls, and the inner wall of the rolling balls is provided with chain link plates, and the number of the rolling balls and chain link plates is adjusted according to the use requirements.

[0006] Preferably, a feeding barrel is provided at the feeding end of the molding assembly.

[0007] Preferably, the feed barrel is plugged with a polyfluoro tube, and the rolling ball is arranged on the inner wall of the polyfluoro tube.

[0008] Preferably, an oven is provided on the inner wall of the base, and the oven is provided on the outside of the forming assembly.

[0009] Compared with the prior art, the embodiment of the present application has the following beneficial effects: achieved through the following steps: 1. Utilizing the principle of the fluidity of the rolling ball, the rolling ball can rotate freely inside the bending tube forming shell; 2. Reusing the chain link plates spliced ​​together as the mold core to pass through the center of the rolling ball, thereby achieving unidirectional transmission; 3. Then baking the elbow in an oven, and then putting the polytetrafluoroethylene tube of the sleeve tooling into the bending tube forming shell to be pushed, on the one hand, the press applies pressure, and on the other hand, the tooling is used for traction, thereby achieving the result of the polytetrafluoroethylene tube in the elbow being molded; 4. Finally, The PTFE tube leaking out of the flange head of the baking elbow is pressed out at an angle with a colander-shaped pointed head, and then the manufactured flat head is pushed by a cylinder to compact the flanging of the PTFE tube, and finally a complete pushed flanging elbow is obtained; among them, the production of tooling needs to increase or decrease the balls and chain link plates according to the actual molding situation, so as to control the damage caused by internal stress to the PTFE tube; flanging stage: baking the PTFE tube to a certain color, rotating the flat head back and forth during the pushing process, and pushing quickly, these three points are important factors to achieve smooth flanging. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view of the utility model;

[0011] Figure 2 It is a structural schematic diagram of the molding component of the utility model;

[0012] Figure 3 It is a schematic diagram of the base structure of the utility model;

[0013] Figure 4 It is a top view of the utility model.

[0014] In the figure: 1, base; 2, forming assembly; 201, elbow forming shell; 202, flange head; 3, PTFE tube; 4, rolling ball; 5, chain link plate; 6, feed barrel. DETAILED DESCRIPTION

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0016] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0017] The utility model embodiment provides a push-pull elbow tooling, such as Figure 1-4 As shown, it includes a base 1: a forming assembly 2 is installed on the inner wall of the base 1, and the forming assembly 2 includes a bent tube forming shell 201, and flange heads 202 are connected to both ends of the bent tube forming shell 201;

[0018] The inner wall of the bending tube forming shell 201 is provided with a plurality of rolling balls 4, and the inner wall of the rolling balls 4 is provided with chain link plates 5. The number of the rolling balls 4 and the chain link plates 5 is adjusted according to the use requirements;

[0019] The feed end of the molding assembly 2 is provided with a feed barrel 6;

[0020] The feed barrel 6 is plugged with a PTFE tube 3, and the rolling ball 4 is arranged on the inner wall of the PTFE tube 3;

[0021] An oven is disposed on the inner wall of the base 1 , and the oven is disposed on the outer side of the molding component 2 .

[0022] It should be noted that, due to the conventional pushing process, it is very easy for the internal stress of the elbow to be large, which may cause the PTFE tube to break, especially at the stage when the final mold is about to be pushed out and the PTFE elbow is about to be formed.

[0023] Specifically, in this embodiment, this solution is mainly implemented through the following steps: 1. Using the principle of the fluidity of the ball 4, it can be freely rotated inside the elbow forming shell 201; 2. Then use the chain link plate 5 to be spliced ​​as the mold core to pass through the center of the ball 4, so as to achieve unidirectional transmission; 3. Then bake the elbow in an oven, and then put the polytetrafluoroethylene tube 3 of the sleeve tooling into the elbow forming shell 201 to be pushed. On the one hand, the press applies pressure, and on the other hand, the tooling is used for traction, so as to achieve the result of the polytetrafluoroethylene tube 3 in the elbow being molded; 4. Finally, the elbow is baked The PTFE tube 3 leaking out from the flange head 202 is pressed out of an angle with a colander-shaped pointed head, and then the manufactured flat head is pushed by a cylinder to compact the flanging of the PTFE tube 3, and finally a complete pushed flanging elbow is obtained; wherein, the production of tooling needs to increase or decrease the rolling ball 4 and the chain link plate 5 according to the actual molding situation, so as to control the damage caused by the internal stress to the PTFE tube 3; flanging stage: baking the PTFE tube 3 to a certain color, rotating the flat head back and forth during the pushing process, and pushing time should be fast, these three points are important factors to achieve smooth flanging.

[0024] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0025] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0026] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0027] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. Push-pull elbow tooling, characterized in that: The invention comprises a base (1); a molding assembly (2) is installed on the inner wall of the base (1); the molding assembly (2) comprises a bent tube molding shell (201); both ends of the bent tube molding shell (201) are connected with flange heads (202); a plurality of rolling balls (4) are arranged on the inner wall of the bent tube molding shell (201); a chain link plate (5) is arranged on the inner wall of the rolling balls (4); the number of the rolling balls (4) and the chain link plate (5) is adjusted according to the use requirements.

2. The pushing and pulling elbow tool as claimed in claim 1, characterized in that: A feeding cylinder (6) is provided at the feeding end of the molding component (2).

3. The pushing and pulling elbow tool as claimed in claim 2, characterized in that: The feed barrel (6) is plugged with a tetrafluoro tube (3), and the rolling ball (4) is arranged on the inner wall of the tetrafluoro tube (3).

4. The pushing and pulling elbow tool as claimed in claim 1, characterized in that: An oven is provided on the inner wall of the base (1), and the oven is provided on the outer side of the forming component (2).

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