Precise cutting device for polytetrafluoroethylene bushing

Abstract

The utility model discloses a precise cutting device of polytetrafluoroethylene bushing, including base, case, polytetrafluoroethylene bushing fixed link, cutting subassembly and moving subassembly, case, cutting subassembly and moving subassembly all are provided on the base, polytetrafluoroethylene bushing fixed link is provided on the case and faces the cutting subassembly side, and the moving subassembly is provided on the case and faces the cutting subassembly side. The cutting assembly is driven by the moving assembly to move on the base, at the moment, a first handle can be rotated according to the length needing to be cut, a first screw is driven to rotate along with rotation of the first handle, a moving block is matched through a threaded hole, meanwhile, through cooperation of the moving block and a sliding rail, rotation limiting is achieved, and the moving block does not rotate any more; the cutting assembly is arranged on the first screw rod and moves in the length direction of the first screw rod to drive the cutting assembly to move, accurate measurement is conducted through the graduated scale, so that the moving distance of the cutter is controlled, and the cutting accuracy of the polytetrafluoroethylene lining is improved.

Description

Technical Field

[0001] The utility model relates specifically to a polytetrafluoroethylene bushing precision cutting device. Background Art

[0002] Polytetrafluoroethylene is a high molecular polymer made by polymerizing tetrafluoroethylene as a monomer. Its chemical formula is (C 2 F 4 ) 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, after the production of polytetrafluoroethylene bushings, they need to be cut to the required size, but the current cutting device cannot cut accurately during the cutting process, resulting in over-cutting or under-cutting, affecting subsequent use. Utility Model Content

[0004] The utility model aims to provide a polytetrafluoroethylene bushing precision cutting device 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 bushing precision cutting device, comprising a base, a chassis, a polytetrafluoroethylene bushing fixing rod, a cutting assembly and a moving assembly, wherein the chassis, the cutting assembly and the moving assembly are all arranged on the base, and the polytetrafluoroethylene bushing fixing rod is arranged on the chassis and faces one side of the cutting assembly. The cutting assembly is driven to move on the base by the moving assembly, so that the cutting area of ​​the cutting assembly is changed to cut polytetrafluoroethylene bushings of different lengths.

[0006] Preferably, the moving component includes a strip block arranged on the upper surface of the base, the strip block has a groove with an open end, a first screw is inserted in the groove, one end of the first screw is arranged in the groove through a bearing seat, and the other end of the first screw extends outside the groove and is connected to a first handle.

[0007] Preferably, a moving block is sleeved on the outer side of one end of the screw rod in the groove, a screw hole matching the screw rod is provided in the moving block, and slide rails matching the two sides of the opening end of the groove are provided on the left and right sides of the moving block.

[0008] Preferably, the cutting assembly includes a support block arranged on the upper surface of the moving block, the support block is provided with a strip groove on the side facing the polytetrafluoroethylene bushing, a second screw is provided on the back side of the support block, the second screw penetrates the support block and extends into the strip groove to be connected to a mounting block.

[0009] Preferably, a cutting knife is provided on a side of the mounting block away from the second screw rod.

[0010] Preferably, a second handle is provided at one end of the second screw away from the cutting knife.

[0011] Preferably, a scale is provided on the side of the strip block away from the cutting knife.

[0012] The technical effects and advantages of the utility model are as follows: the cutting device for producing polytetrafluoroethylene gaskets sleeves the polytetrafluoroethylene bushing to be cut on the polytetrafluoroethylene bushing fixing rod, and the first handle can be rotated according to the required cutting length. As the first handle is rotated, the first screw is driven to rotate, and the moving block cooperates with the threaded hole, and at the same time, the moving block and the slide rail are cooperated to achieve rotation limit, so that the moving block no longer rotates and moves along the length direction of the first screw, driving the movement of the cutting assembly, and accurate measurement is performed through a ruler to control the moving distance of the cutting knife, thereby improving the accuracy of cutting the polytetrafluoroethylene bushing. 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 scale of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the mobile component of the utility model from a first perspective;

[0016] Figure 4 This is a schematic structural diagram of the mobile component of the utility model from a second viewing angle.

[0017] In the figure: 1. base; 2. chassis; 3. polytetrafluoroethylene bushing fixing rod; 4. bar block; 5. first screw rod; 6. first handle; 7. moving block; 8. slide rail; 9. support block; 10. bar groove; 11. second screw rod; 12. mounting block; 13. cutting knife; 14. second handle; 15. ruler. 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 improve the convenience of cutting polytetrafluoroethylene gaskets, refer to Figure 1 , Figure 2 and Figure 3As shown, it includes a base 1, a chassis 2, a polytetrafluoroethylene bushing fixing rod 3, a cutting component and a moving component. The chassis 2, the cutting component and the moving component are all arranged on the base 1. The polytetrafluoroethylene bushing fixing rod 3 is arranged on the chassis 2 and faces one side of the cutting component. The cutting component is driven to move on the base 1 by the moving component to change the cutting area of ​​the cutting component, and polytetrafluoroethylene bushings of different lengths are cut. The polytetrafluoroethylene bushings to be cut are sleeved on the polytetrafluoroethylene bushing fixing rod 3. At this time, the first handle 6 can be rotated according to the required cutting length. As the first handle 6 is rotated, the first screw 5 is driven to rotate. The moving block 7 is matched with the threaded hole, and at the same time, the moving block 7 is matched with the slide rail 8 to realize rotation limitation, so that the moving block 7 no longer rotates, and moves along the length direction of the first screw 5, driving the movement of the cutting component, and accurate measurement is performed through the scale 15 to control the moving distance of the cutting knife 13, thereby improving the accuracy of cutting the polytetrafluoroethylene bushing.

[0020] In order to facilitate the accuracy of cutting the PTFE liner, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the moving assembly includes a bar block 4 arranged on the upper surface of the base 1, and a groove with an open end is provided in the bar block 4, and a first screw 5 is inserted in the groove. One end of the first screw 5 is arranged in the groove through a bearing seat, and the other end of the first screw 5 extends outside the groove and is connected to a first handle 6. After the first handle 6 is turned, the first screw 5 rotates in the groove with the cooperation of the bearing seat. A moving block 7 is sleeved on the outer side of one end of the screw located in the groove, and a screw hole matching the screw is provided in the moving block 7. The matching screw hole facilitates the movement of the moving block 7 in the later stage. The moving block 7 is provided with slide rails 8 matching the two sides of the opening end of the groove on both sides. By inserting both ends of the opening of the groove into the slide rails 8, the rotation limit of the moving block 7 is realized, and the rotational motion is converted into linear motion, so that the moving block 7 drives the cutting knife 13 to move and change the position of the cutting area. The cutting assembly includes a support block 9 arranged on the upper surface of the moving block 7, and the support block 9 is provided with a strip groove 10 on the side facing the polytetrafluoroethylene bushing. The back side of the support block 9 is provided with a second screw 11, and the second screw 11 passes through the support block 9 and extends into the strip groove 10 to be connected with a mounting block 12. A screw hole adapted to the second screw 11 is also provided on the back side of the support block 9, and a bearing seat is also provided at the connection between the mounting block 12 and the second screw 11, so that when the second screw 11 rotates, the second screw 11 can be fed left and right into the strip groove 10 relative to the support block 9 with the cooperation of the screw hole, and the mounting block 12 can be prevented from rotating with the second screw 11 through the bearing seat. When not in use, the cutting knife 13 can be stored in the strip groove 10 to improve safety. The mounting block 12 is provided with a cutting knife 13 on the side away from the second screw 11, and the cutting of the polytetrafluoroethylene bushing is completed by the cutting knife 13. The second screw 11 is provided with a second handle 14 at one end away from the cutting blade 13, and the second screw 11 can be driven to rotate by the second handle 14, so as to drive the cutting blade 13 to cut. The strip block 4 is provided with a scale 15 at one side away from the cutting blade, and the moving distance of the moving block 7 can be accurately observed by the scale 15, so as to accurately adjust the cutting position of the cutting blade 13.

[0021] When in use, firstly, the polytetrafluoroethylene bushing to be cut is sleeved on the polytetrafluoroethylene bushing fixing rod 3. At this time, the first handle 6 can be rotated according to the required cutting length. As the first handle 6 is rotated, the first screw rod 5 is driven to rotate. The moving block 7 is cooperated with the threaded hole, and at the same time, the moving block 7 and the slide rail 8 are cooperated to realize the rotation limit, so that the moving block 7 no longer rotates and moves along the length direction of the first screw rod 5, driving the movement of the cutting assembly, and accurate measurement is performed through the scale 15 to control the moving distance of the cutting knife 13. Then, the second handle 14 is turned to drive the rotation of the second screw rod 11, and the cutting knife 13 is pushed out from the strip groove 10 to cut the polytetrafluoroethylene bushing.

[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 bushing precision cutting device, characterized in that: The invention comprises a base (1), a chassis (2), a polytetrafluoroethylene bushing fixing rod (3), a cutting assembly and a moving assembly, wherein the chassis (2), the cutting assembly and the moving assembly are all arranged on the base (1), the polytetrafluoroethylene bushing fixing rod (3) is arranged on the chassis (2) and faces one side of the cutting assembly, and the cutting assembly is driven to move on the base (1) by the moving assembly, so that the cutting area of ​​the cutting assembly is changed, and polytetrafluoroethylene bushings of different lengths can be cut.

2. A polytetrafluoroethylene bushing precision cutting device according to claim 1, characterized in that: The moving assembly comprises a strip block (4) arranged on the upper surface of the base (1), a groove with an open end formed in the strip block (4), a first screw rod (5) inserted in the groove, one end of the first screw rod (5) being arranged in the groove via a bearing seat, and the other end of the first screw rod (5) extending outside the groove and connected to a first handle (6).

3. A polytetrafluoroethylene bushing precision cutting device according to claim 2, characterized in that: A moving block (7) is sleeved on the outer side of one end of the screw rod in the groove, a screw hole matching the screw rod is provided in the moving block (7), and slide rails (8) matching the two sides of the opening end of the groove are provided on the left and right sides of the moving block (7).

4. A polytetrafluoroethylene bushing precision cutting device according to claim 3, characterized in that: The cutting assembly comprises a support block (9) arranged on the upper surface of the moving block (7), the support block (9) being provided with a strip groove (10) on a side facing the polytetrafluoroethylene bushing, a second screw rod (11) being arranged on the back side of the support block (9), the second screw rod (11) penetrating the support block (9) and extending into the strip groove (10) to be connected with a mounting block (12).

5. A polytetrafluoroethylene bushing precision cutting device according to claim 4, characterized in that: A cutting knife (13) is provided on the side of the mounting block (12) away from the second screw rod (11).

6. A polytetrafluoroethylene bushing precision cutting device according to claim 5, characterized in that: A second handle (14) is provided at one end of the second screw rod (11) away from the cutting blade (13).

7. A polytetrafluoroethylene bushing precision cutting device according to claim 2, characterized in that: A scale (15) is provided on the side of the strip block (4) away from the cutting knife.

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