Polytetrafluoroethylene pipeline cutting and positioning tool

Abstract

The utility model discloses a polytetrafluoroethylene pipeline tailoring and positioning tool which comprises supporting columns, a base, a moving mechanism and limiting mechanisms, the two supporting columns are symmetrically arranged at the two ends of the base, and the limiting mechanisms are arranged on the opposite faces of the two supporting columns. A positioning area for a polytetrafluoroethylene pipeline to be cut is formed between the two limiting mechanisms, the supporting columns are driven by the moving mechanisms to move in the length direction of the base, and the size of the positioning area is changed. The bearing sleeve converts rotary motion into linear motion, at the moment, the bearing sleeve drives the supporting column to move, the positioning area is adjusted to be matched with the polytetrafluoroethylene pipeline to be cut in size, the overall structure is simple, practical and convenient, adjustment can be conducted in real time, and finally the two ends of the polytetrafluoroethylene sleeve are connected into the limiting blocks in a sleeved mode. At the moment, the inner wall of the pipeline extrudes a limiting block, a spring contracts, the spring deforms to react acting force on the pipeline, and therefore the pipeline is fixed, and stability in the cutting process is improved.

Description

Technical Field

[0001] The utility model relates specifically to a polytetrafluoroethylene pipe cutting and positioning tool. Background Art

[0002] Polytetrafluoroethylene is a high molecular polymer made by polymerizing tetrafluoroethylene as a monomer. Its chemical formula is (C2F4) n , excellent in heat and cold resistance, can be used for a long time at -180~260ºC. This material is resistant to acid, alkali and various organic solvents, and is almost insoluble in all solvents. At the same time, polytetrafluoroethylene is resistant to high temperatures and has an extremely low friction coefficient.

[0003] Currently, polytetrafluoroethylene tubes need to be cut after production to cut the tubes into required lengths. However, during the cutting process, the lengths of each tube are different, which makes the positioning tooling used to fix the tubes impractical, reducing the overall practicality. Utility Model Content

[0004] The utility model aims to provide a polytetrafluoroethylene pipe cutting and positioning tool to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polytetrafluoroethylene pipe cutting and positioning tool, comprising a support column, a base, a moving mechanism and a limiting mechanism, wherein the two support columns are symmetrically arranged at both ends of the base, and limiting mechanisms are arranged on opposite surfaces of the two support columns, and a positioning area for the polytetrafluoroethylene pipe to be cut is formed between the two limiting mechanisms, and the support column is driven to move along the length direction of the base by the moving mechanism to change the size of the positioning area.

[0006] Preferably, the limiting mechanism comprises a threaded rod centrally arranged in the base, a bearing sleeve is sleeved on the outer side of the threaded rod, and connecting plates are symmetrically arranged on both sides of the outer side of the bearing sleeve.

[0007] Preferably, two connecting plates are provided, and grooves are formed on the sides of the two connecting plates that are away from each other, and sliding units are provided in the grooves.

[0008] Preferably, the lubrication unit comprises two connecting rods and a roller arranged in the groove, the two connecting rods are respectively arranged on both sides of the groove, and the roller is arranged between the two connecting rods.

[0009] Preferably, slide grooves are provided on both sides of the base, and the connecting rod extends into the slide groove so that the roller abuts against the inner wall of the slide groove.

[0010] Preferably, the limiting mechanism comprises a mounting plate arranged on the supporting column, a positioning column is arranged on the mounting plate, and a plurality of fixing blocks are arranged at equal intervals around the outer side of the positioning column.

[0011] Preferably, a cavity is provided in the fixing block, a spring is installed in the cavity, and the spring extends through the cavity to the outside of the fixing block and is connected to the limiting block.

[0012] The technical effects and advantages of the utility model are as follows: the PTFE pipe cutting and positioning tool drives a power unit according to the length of the PTFE pipe to be cut, and the power unit drives the threaded rod to rotate, driving the bearing sleeve to rotate accordingly. At this time, the roller is in the slide groove and slides along the length direction of the slide groove, thereby limiting the rotation of the bearing sleeve, so that the bearing sleeve converts the rotational motion into linear motion. At this time, the bearing sleeve drives the support column to move, and adjusts the positioning area to a size suitable for the PTFE pipe to be cut. The overall structure is simple, practical and convenient, and can be adjusted in real time. Finally, the two ends of the PTFE sleeve are respectively sleeved into the limit blocks. At this time, the inner wall of the pipe squeezes the limit block to contract the spring. The deformation of the spring reacts the force on the pipe, thereby fixing the pipe to facilitate stability during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the limiting mechanism of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the connection plate of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the mobile mechanism of the utility model.

[0017] In the figure: 1. support column; 2. base; 3. threaded rod; 4. bearing sleeve; 5. connecting plate; 6. connecting rod; 7. roller; 8. mounting plate; 9. positioning column; 10. fixing block; 11. spring; 12. limit block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] In order to facilitate cutting of different lengths of PTFE sleeves, refer to Figure 1 , Figure 2 and Figure 3As shown, it includes a support column 1, a base 2, a moving mechanism and a limiting mechanism. The two support columns 1 are symmetrically arranged at both ends of the base 2. The limiting mechanisms are arranged on the opposite sides of the two support columns 1. A positioning area for the polytetrafluoroethylene pipe to be cut is formed between the two limiting mechanisms. The support column 1 is driven to move along the length direction of the base 2 by the moving mechanism to change the size of the positioning area. The power unit is driven according to the length of the polytetrafluoroethylene pipe to be cut. The power unit drives the threaded rod 3 to rotate, driving the bearing sleeve 4 to follow the rotation. At this time, the roller 7 is driven in the slide groove The bearing sleeve 4 is locked in the groove and slides along the length direction of the slide slot, thereby limiting the rotation of the bearing sleeve 4, so that the bearing sleeve 4 converts the rotational motion into linear motion. At this time, the bearing sleeve 4 drives the support column 1 to move, and adjusts the positioning area to a size suitable for the polytetrafluoroethylene pipe to be cut. The overall structure is simple, practical and convenient, and can be adjusted in real time. Finally, the two ends of the polytetrafluoroethylene sleeve are respectively sleeved into the limit blocks 12. At this time, the inner wall of the pipe squeezes the limit blocks 12 to contract the spring 11. The deformation of the spring 11 reacts the force on the pipe, thereby fixing the pipe.

[0020] In order to improve the stability of the PTFE sleeve when cutting, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the limiting mechanism includes a threaded rod 3 centrally arranged in the base 2, a bearing sleeve 4 is sleeved on the outer side of the threaded rod 3, and a connecting plate 5 is symmetrically arranged on the outer sides of the bearing sleeve 4. The connecting plates 5 are provided with two, and a groove is provided on the side away from the two connecting plates 5. A sliding unit is provided in the groove, and the lubrication unit includes two connecting rods 6 and a roller 7 provided in the groove. The two connecting rods 6 are respectively provided on both sides of the groove, and the roller 7 is provided between the two connecting rods 6. The roller 7 slides in the slide groove and along the length direction of the slide groove, thereby rotating the bearing sleeve 4, so that the bearing sleeve 4 converts the rotational motion into linear motion. At this time, the bearing sleeve 4 drives the support column 1 to move, and adjusts the positioning area to a size suitable for the polytetrafluoroethylene pipe to be cut. Slide grooves are provided on both sides of the base 2, and the connecting rod 6 extends into the slide groove so that the roller 7 abuts against the inner wall of the slide groove. Baffles are provided at the ends of the two threaded rods 3 that are close to each other to prevent the bearing sleeve 4 from derailing. A power unit is provided at the end of the threaded rod 3 to drive the threaded rod 3 to rotate, and a motor is preferably used as the power unit. The limit mechanism includes a mounting plate 8 provided on the support column 1, a positioning column 9 is provided on the mounting plate 8, and a plurality of fixed blocks 10 are provided at equal intervals around the outer side of the positioning column 9. A cavity is provided in the fixed block 10, and a spring 11 is installed in the cavity. The spring 11 extends through the cavity to the outside of the fixed block 10 and is connected to the limit block 12. When the two sides of the pipe are sleeved on the limit block 12, the pipe wall will squeeze the limit block 12, causing the spring 11 to deform. The limit block 12 is abutted against the pipe wall by the force of the spring 11 to be fixed, so as to facilitate the cutting of stable pipes.

[0021] When in use, first drive the power unit according to the length of the polytetrafluoroethylene pipe to be cut, the power unit drives the threaded rod 3 to rotate, and drives the bearing sleeve 4 to rotate accordingly. At this time, the roller 7 is in the slide groove and slides along the length direction of the slide groove, so as to limit the rotation of the bearing sleeve 4, so that the bearing sleeve 4 converts the rotational motion into linear motion. At this time, the bearing sleeve 4 drives the support column 1 to move, and adjusts the positioning area to a size suitable for the polytetrafluoroethylene pipe to be cut, which can be adjusted in real time, and finally the two ends of the polytetrafluoroethylene sleeve are respectively connected to the limit block 12. At this time, the inner wall of the pipe squeezes the limit block 12, causing the spring 11 to contract. The deformation of the spring 11 reacts the force on the pipe, thereby fixing the pipe.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention.

Claims

1. A polytetrafluoroethylene pipe cutting and positioning tool, characterized in that: The invention comprises a support column (1), a base (2), a moving mechanism and a limiting mechanism, wherein the two support columns (1) are symmetrically arranged at two ends of the base (2), and the limiting mechanisms are arranged on opposite sides of the two support columns (1), and a positioning area for the polytetrafluoroethylene pipe to be cut is formed between the two limiting mechanisms. The support column (1) is driven to move along the length direction of the base (2) by the moving mechanism, thereby changing the size of the positioning area.

2. A polytetrafluoroethylene pipe cutting and positioning tool according to claim 1, characterized in that: The limiting mechanism comprises a threaded rod (3) centrally arranged in the base (2), a bearing sleeve (4) is sleeved on the outer side of the threaded rod (3), and connecting plates (5) are symmetrically arranged on both sides of the outer side of the bearing sleeve (4).

3. A polytetrafluoroethylene pipe cutting and positioning tool according to claim 2, characterized in that: Two connecting plates (5) are provided, and grooves are provided on the sides of the two connecting plates (5) that are away from each other, and sliding units are provided in the grooves.

4. A polytetrafluoroethylene pipe cutting and positioning tool according to claim 3, characterized in that: The sliding unit comprises two connecting rods (6) and a roller (7) arranged in the groove, the two connecting rods (6) are respectively arranged on both sides of the groove, and the roller (7) is arranged between the two connecting rods (6).

5. A polytetrafluoroethylene pipe cutting and positioning tool according to claim 4, characterized in that: Slide grooves are provided on both sides of the base (2), and the connecting rod (6) extends into the slide groove so that the roller (7) abuts against the inner wall of the slide groove.

6. The polytetrafluoroethylene pipe cutting and positioning tool according to claim 1, characterized in that: The limiting mechanism comprises a mounting plate (8) arranged on the support column (1), a positioning column (9) being arranged on the mounting plate (8), and a plurality of fixing blocks (10) being arranged at equal intervals around the outer side of the positioning column (9).

7. A polytetrafluoroethylene pipe cutting and positioning tool according to claim 6, characterized in that: A cavity is provided in the fixing block (10), a spring (11) is installed in the cavity, and the spring (11) extends through the cavity to the outside of the fixing block (10) and is connected to the limiting block (12).

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