CN110004555B

CN110004555B - Device for marking PTFE sewing thread

Info

Publication number: CN110004555B
Application number: CN201910334268.1A
Authority: CN
Inventors: 周宏成; 薛峰
Original assignee: Zhejiang Lucking Environmental Protection Co ltd
Current assignee: Zhejiang Lucking Environmental Protection Co ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-06-19
Anticipated expiration: 2039-04-24
Also published as: CN110004555A

Abstract

The invention belongs to the technical field of sewing thread structures, and particularly relates to a PTFE sewing thread marking device. The invention achieves the purpose of effectively arranging the marking ring at the movable end of the PTFE sewing thread to facilitate searching by arranging the marking ring, the inserting hole, the annular sliding unit, the magnetic clamping unit and the inserting column unit on the PTFE thread. The invention has the advantages of stable and effective installation structure of the marking ring, convenient and quick assembly and disassembly operation, flexible and effective clamping and fixing actions on the PTFE thread, and good integral using effect of the marking ring for prompting the thread end.

Description

Device for marking PTFE sewing thread

Technical Field

The invention belongs to the technical field of sewing thread structures, and particularly relates to a PTFE sewing thread marking device.

Background

PTFE sewing thread refers to a kind of sewing thread made by twisting and plying PTFE fiber, which has the advantages of large tensile strength, high chemical stability, suitability for high temperature environment, etc. On the other hand, the existing PTFE sewing thread has the problems that the thread ends are scattered randomly after being used and the finding is inconvenient like other sewing threads, so that a PTFE sewing thread with a thread end marking function is urgently needed in the market to ensure that the thread ends are well found after the sewing thread is used.

The patent publication No. CN204780042U, Chinese utility model patent that bulletin date is 2015.11.18 discloses a sewing thread, thread and vice threading are threaded including the main, the main threads and vice threading are twisted along common axis direction plying each other, be equipped with the ring channel on the main threads, the ring channel is the heliciform along the one end of main threads and extends to the other end of main threads, be equipped with a plurality of burrs in the ring channel.

But the sewing thread in this utility model patent has the scattered indiscriminate problem of not looking for of thread end after the sewing thread uses.

Disclosure of Invention

The invention aims to provide a device for marking a PTFE sewing thread, which can achieve the aim of effectively arranging a marking ring at the movable end of the PTFE sewing thread to facilitate searching by arranging the marking ring, an inserting hole, a circumferential sliding unit, a magnetic clamping unit and an inserting column unit on the PTFE thread. The invention has the advantages of stable and effective installation structure of the marking ring, convenient and quick assembly and disassembly operation, flexible and effective clamping and fixing actions on the PTFE thread, and good integral using effect of the marking ring for prompting the thread end.

The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a mark PTFE sewing thread's device, includes the PTFE line, still sets up including cup jointing PTFE on the line and be close to the mark ring of end position department, sets up patchhole on the mark ring lateral wall sets up the annular slip unit in the trompil of mark ring sets up in the trompil and through with be close to the back the mutual magnetic attraction mode of annular slip unit is in order to be used for pressing from both sides the fastening of the magnetic force of PTFE line presss from both sides the unit to and peg graft and set up on the patchhole and be used for towards the magnetic force presss from both sides the promotion of unit direction annular slip unit's insert post unit.

The further preferred technical scheme is as follows: the annular sliding unit comprises a limiting mounting column arranged in the open hole, an iron plate body used for receiving the magnetic force of the magnetic clamping unit, and plate body open holes which are arranged on two sides of the iron plate body and used for inserting the limiting mounting column; the magnetic clamping unit comprises a notch, a pulling spring and a permanent magnet sheet, wherein the notch is arranged in the opening and is symmetrical to the opening, the iron plate body is arranged in the notch, the pulling spring is arranged on the bottom surface in the notch, and the permanent magnet sheet is bonded on the pulling spring and is used for being outwards protruded when the iron plate body is close to the notch, so that the iron plate body is tightly pressed on the permanent magnet sheet of the PTFE line.

The further preferred technical scheme is as follows: the annular sliding unit further comprises a clamping plate which is arranged at the end of the limiting mounting column and fixedly inserted into the opening of the plate body, a limiting ring which is arranged in the opening of the plate body and is far away from one side of the magnetic clamping unit, a magnet ring which is arranged in the opening of the plate body and is close to one side of the magnetic clamping unit, and a second magnet ring which is arranged on the side surface of the clamping plate and is used for withdrawing the iron plate body in a magnetic attraction manner with the magnet ring so as to reserve a wire body insertion space between the iron plate body and the permanent magnet sheet; the magnetic clamping unit further comprises a limiting cylinder body which is arranged on the inner bottom surface of the groove, sleeved on the outer side of the pulling spring and used for limiting and supporting the permanent magnet sheet.

The further preferred technical scheme is as follows: the inserting column unit comprises a pushing column body and a column body clamping portion, wherein the pushing column body is arranged on the inserting hole in an inserting mode and used for pushing the iron plate body inwards, and the column body clamping portion is arranged on the ring surface of the inserting hole and the ring surface of the pushing column body and used for fixing the pushing column body after being pulled and adjusted.

The further preferred technical scheme is as follows: the inserting column unit further comprises a second clamping plate which is arranged on the annular surface of the pushing column body and used for limiting and inserting in the inserting hole, the inner side end of the pushing column body is adhered to the iron plate body, and the outer side end of the pushing column body is convexly arranged on the outer side of the marking ring.

The further preferred technical scheme is as follows: cylinder block portion is in including setting up promote bulge loop on the cylinder anchor ring, set up mounting groove on the patchhole anchor ring, both ends set up on two sides of mounting groove and with promote the parallel connection rope of cylinder, and arrange and set up connect on the rope and through the block bulge loop mode is in order to be used for promote after the cylinder pull is adjusted to carry out the fixed a plurality of block loop of block, the bulge loop with the block loop all has the arc anchor ring.

The further preferred technical scheme is as follows: the column body clamping part further comprises a fixing plate which is arranged on the inner side surface of the mounting groove and used for limiting and fixing two sides of the protruding ring in a clamping mode on two sides of the clamping ring when the protruding ring is horizontally clamped and fixed, and the clamping ring obliquely slides out from the fixing plate when the protruding ring is pulled and adjusted.

The further preferred technical scheme is as follows: the fixing plate is provided with an arc-shaped side surface which is abutted against the arc-shaped ring surface of the clamping rings, and two sides of the fixing plates clamp the clamping rings which are linearly arranged in the same way.

The further preferred technical scheme is as follows: cylinder block portion is still including setting up the installation annular on the connection rope anchor ring, the setting of bonding is in inboard magnet ring on the installation annular anchor ring to and the setting of bonding is in on the intra-annular anchor ring of block and through with inboard magnet ring carries out magnetic force and attracts fixed mode in order to be used for fixed mounting on the connection rope the outside magnet ring of block ring.

The further preferred technical scheme is as follows: the cylinder block portion is still including cup jointing the setting and being in on the mounting ring groove anchor ring and support respectively two spacing rings on two annular side of mounting ring groove, the internal diameter of spacing ring with the mounting ring groove section connect the diameter of rope equal.

The invention achieves the purpose of effectively arranging the marking ring at the movable end of the PTFE sewing thread to facilitate searching by arranging the marking ring, the inserting hole, the annular sliding unit, the magnetic clamping unit and the inserting column unit on the PTFE thread. The invention has the advantages of stable and effective installation structure of the marking ring, convenient and quick assembly and disassembly operation, flexible and effective clamping and fixing actions on the PTFE thread, and good integral using effect of the marking ring for prompting the thread end.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the position structure of the circumferential sliding unit and the magnetic clamping unit according to the present invention.

Fig. 3 is a schematic structural view of the inside of the opening of the plate body according to the present invention.

FIG. 4 is a schematic view of a position structure of the column engaging portion of the present invention.

FIG. 5 is a half sectional view showing the position structure of the snap ring according to the present invention.

Detailed Description

The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Example (b): as shown in fig. 1, 2, 3, 4 and 5, a PTFE sewing thread marking device comprises a PTFE thread 1, a marking ring 2 sleeved on the PTFE thread 1 and near the end position, an insertion hole 3 formed in the side wall of the marking ring 2, a circumferential sliding unit 4 disposed in the opening of the marking ring 2, a magnetic clamping unit 5 disposed in the opening and used for clamping and fixing the PTFE thread 1 in a manner of magnetic attraction with the circumferential sliding unit 4 after being close to the opening, and an insertion column unit 6 inserted into the insertion hole 3 and used for pushing the circumferential sliding unit 4 towards the magnetic clamping unit 5.

In this embodiment, before the PTFE thread 1 is used, the marking ring 2 is taken down, and after the PTFE thread 1 is used, the marking ring 2 is sleeved again, so that the thread end of the PTFE thread 1 is marked obviously, and the thread end can be found quickly when the PTFE thread is used next time.

Wherein the circumferential sliding unit 4 with magnetic force attraction effect has between the magnetic clamping unit 5, works as PTFE line 1 stretches into the trompil is downthehole thick, insert the drive of post unit 6 the circumferential sliding unit 4, make it be close to the magnetic clamping unit 5, last the circumferential sliding unit 4 with the magnetic clamping unit 5 presss from both sides tightly PTFE line 1 guarantees the effective fixed of mark ring 2, and works as PTFE line 1 need use when mark ring 2 need take off, will insert post unit 6 and pull out, circumferential sliding unit 4 with the distance increase between the magnetic clamping unit 5, final magnetic force attraction clamp effect disappears, mark ring 2 can take off, guarantees when mark ring 2 has the installation stability high to and convenient operation swift advantage during loading and unloading.

The annular sliding unit 4 comprises a limiting mounting column 401 arranged in the opening, an iron plate body 402 used for receiving the magnetic force of the magnetic clamping unit 5, and plate body openings 403 arranged on two sides of the iron plate body 402 and used for inserting the limiting mounting column 401; the magnetic clamping unit 5 comprises a slot 501 which is arranged in the open hole and is in central symmetry with the iron plate body 402 about the open hole, a pulling spring 502 which is arranged on the bottom surface in the slot 501, and a permanent magnet sheet 503 which is adhered to the pulling spring 502 and used for protruding outwards when the iron plate body 402 is close to and further compressing the PTFE line 1.

In this embodiment, the inserting column unit 6 is used to pull the iron plate 402, after the iron plate 402 is slowly close to the permanent magnet sheet 503, the permanent magnet sheet 503 will overcome the pulling force of the pulling spring 502 to "suck" on the iron plate 402, and the PTFE wire 1 between the iron plate 402 and the permanent magnet sheet 503 is clamped, so as to ensure the installation stability of the marking ring 2 on the PTFE wire 1.

On the other hand, when the PTFE thread 1 needs to be used, insert post unit 6 and outwards stimulate iron plate body 402, permanent magnet piece 503 follows iron plate body 402 and moves a distance together, when the pulling force of pulling spring 502 increases to being greater than after the deformation extension rapidly the attraction magnetic force of permanent magnet piece 503 department, permanent magnet piece 503 is pulled back fluting 501, iron plate body 402 follows insert post unit 6 and outwards move to comparatively keeping away from permanent magnet piece 503 one side, PTFE thread 1 clamping effect disappears this moment, can follow use has been taken off in the mark ring 2.

The annular sliding unit 4 further includes a clamping plate 404 disposed at the end of the limiting mounting post 401 and fixedly inserted into the plate opening 403, a limiting ring 405 disposed in the plate opening 403 and away from the magnetic clamping unit 5, a magnet ring 406 disposed in the plate opening 403 and close to one side of the magnetic clamping unit 5, and a second magnet ring 407 disposed on the side of the clamping plate 404 and magnetically attracting the magnet ring 406 to retract the iron plate 402 so as to leave a wire body insertion space between the iron plate 402 and the permanent magnet sheet 503; the magnetic clamping unit 5 further includes a limiting cylinder 504 disposed on the inner bottom surface of the slot 501 and sleeved outside the pulling spring 502 for limiting and supporting the permanent magnet sheet 503.

In this embodiment, the plate body opening 403 is inserted into the engaging plate 404, so as to ensure that the iron plate body 402 stably slides along the axial direction of the limiting mounting post 401 without circumferential deviation, the limiting ring 405 is located outside the engaging plate 404 to limit the maximum extending sliding distance of the iron plate 402, the magnet ring 406 and the second magnet ring 407 are magnetically attracted to each other, so that when the insertion column unit 6 is withdrawn outward, the iron plate 402 can be restored to an initial state away from the permanent magnet piece 503 by means of the magnetic force between the magnet ring 406 and the second magnet ring 407, and on the other hand, the limiting cylinder 504 is used to prevent the pulling spring 502 from bending, and an increased rebound distance of the permanent magnet pieces 503 which are pulled back by the pulling spring 502 is restricted, the ring surface of the limiting cylinder 504 is provided with a rubber elastic ring for buffering the permanent magnet sheet 503.

The inserting column unit 6 comprises a pushing column 601 inserted into the insertion hole 3 and used for pushing the iron plate 402 inwards, and a column clamping part 602 arranged on the ring surface of the insertion hole 3 and the ring surface of the pushing column 601 and used for fixing after the pulling adjustment of the pushing column 601. The inserting column unit 6 further comprises a second clamping plate 603 which is arranged on the ring surface of the pushing column 601 and used for limiting and inserting in the inserting hole 3, the inner side end of the pushing column 601 is adhered to the iron plate 402, and the outer side end of the pushing column 601 is convexly arranged on the outer side of the marking ring 2.

In this embodiment, the pushing cylinder 601 is used to push the ferrous plate 402 inward and pull the ferrous plate 402 outward in an auxiliary manner, because the attractive magnetic force between the magnet ring 406 and the second magnet ring 407 can also pull the ferrous plate 402 outward away from the permanent magnet pieces 503 when the pushing cylinder 601 is withdrawn.

On the other hand, the contour of the second engaging plate 603 fits the contour of the inner diameter of the insertion hole 3, so as to ensure the stable axial sliding of the pushing cylinder 601 in the insertion hole 3 and avoid the harmful left-right swinging, the cylinder engaging portion 602 is used for fixing the pushing cylinder 601 when the pushing cylinder 601 pulls the iron plate 402 to reach a proper insertion depth, so as to ensure the position stability of the iron plate 402, and finally is used for clamping the PTFE wire 1 together with the permanent magnet sheet 503 to ensure the installation stability of the marker ring 2, and when the pushing cylinder 601 is pulled outwards by manpower, so as to overcome the engaging force at the cylinder engaging portion 602, the iron plate 402 is immediately away from the permanent magnet sheet 503, so that the magnetic force finally disappears, and the marker ring 2 is easily taken off from the marker ring 2, the convenience of assembling and disassembling the marking ring 2 is ensured.

Cylinder block portion 602 is including setting up bulge loop 602a on the promotion cylinder 601 anchor ring, the setting is in mounting groove 602b on the 3 anchor ring of patchhole, both ends set up on two sides of mounting groove 602b and with promote the parallel connection rope 602c of cylinder 601, and arrange and set up connect on the rope 602c and through the block bulge loop 602a mode is in order to be used for carrying out a plurality of block loop 602d that the block is fixed after promoting cylinder 601 pull regulation, bulge loop 602a with block loop 602d all has the arc anchor ring. The cylinder engaging portion 602 further includes a fixing plate 602e disposed on an inner side surface of the mounting groove 602b and used for performing two-side position-limiting fixing when the engaging ring 602d horizontally clamps and fixes the protruding ring 602a by clamping on two sides of the engaging ring 602d, and the engaging ring 602d slides out obliquely from between the fixing plates 602e when the protruding ring 602a is adjusted to be drawn. The fixed plate 602e is provided with an arc-shaped side surface abutting against the arc-shaped ring surface of the snap-fit ring 602d, and two sides of the fixed plate 602e clamp the snap-fit rings 602d which are linearly arranged in the same manner. The cylinder engaging portion 602 further includes a mounting ring groove 602f disposed on the ring surface of the connecting rope 602c, an inner magnet ring 602g disposed on the ring surface of the mounting ring groove 602f in an adhesive manner, and an outer magnet ring 602h disposed on the inner ring surface of the engaging ring 602d in a magnetic attraction manner and fixed to the inner magnet ring 602g on the connecting rope 602 c. Cylinder block portion 602 is still including cup jointing the setting and is in on the anchor ring groove 602f the anchor ring just supports respectively two spacing rings 602k on the two annular side faces of anchor ring groove 602f, the internal diameter of spacing ring 602k with the anchor ring groove 602f section the diameter of connecting rope 602c equals.

In this embodiment, the method of using the cylinder engaging portion 602 and the advantages thereof are as follows:

first, initially, the magnet ring 406 and the second magnet ring 407 are attracted to each other by magnetic force, the iron plate 402 is located on the side farthest from the permanent magnet piece 503, the protruding ring 602a is located on the outer side of the outermost engaging ring 602d, and the column engaging portion 602 is left unused;

secondly, after the PTFE thread 1 is inserted into the opening and is located between the iron plate 402 and the permanent magnet sheet 503, the iron plate 402 needs to be close to the permanent magnet sheet 503 to trigger the effect that the permanent magnet sheet 503 is "sucked" toward the iron plate 402 and finally clamps the PTFE thread 1, at this time, the pushing cylinder 601 pushes the iron plate 402 inward, the protruding ring 602a is fixed by being clamped between some two clamping rings 602d after crossing over a plurality of clamping rings 602d, at this time, the arc-shaped ring surface of the protruding ring 602a and the adjacent arc-shaped ring surface of the two clamping rings 602d are mutually abutted together to ensure the effect of clamping and fixing, at this time, the insertion depth of the iron plate 402 is appropriate enough to trigger the action that the permanent magnet sheet 503 is "sucked" and finally clamps the PTFE thread 1;

thirdly, in this embodiment, when the protruding ring 602a crosses a certain locking ring 602d, the locking ring 602d pulls the connecting rope 602c, and then the ring surface of the locking ring 602d can cross the arc-shaped end surface of the fixing plate 602e in an inclined manner, if the protruding ring 602a directly abuts against the fixing plate 602e, the locking ring is an arc-shaped abutting locking effect in the prior art, the locking manner realizes the locking and sliding-out through the deformation of the arc-shaped end surface of the fixing plate 602e, so that the locking and sliding-out resistance is large, and the arc-shaped end surface of the fixing plate 602e is easily worn, therefore, in this embodiment, the locking ring 602d is added between the protruding ring 602a and the fixing plate 602e to perform intermediate transmission, and the advantage that the resistance for locking, fixing, sliding-out and pulling of the protruding ring 602a is relatively small can be finally realized, moreover, the snap-fit ring 602d is snapped in and slid out between the arc-shaped end surfaces of the fixed plate 602e in a manner that the connecting rope 602c is pulled to be partially stretched, and then the snap-fit ring 602d tilts itself, which has the advantage of low wear rate of the arc-shaped end surface of the fixed plate 602e compared with a manner that the arc-shaped end surface of the fixed plate 602e is directly deformed;

fourthly, the final source of the fixing force after the pushing cylinder 601 is pulled is the abutting action of two adjacent snap rings 602d at the position of a notch formed by two arc-shaped end surfaces of four adjacent fixing plates 602e, the snap rings 602d do not slide out from the arc-shaped end surfaces of the fixing plates 602e in an inclined manner, and the protruding ring 602a does not slide out from the arc-shaped ring surface of the snap ring 602d, so that the axial fixing effect of the pushing cylinder 601 is ensured;

fifthly, two upper and lower both sides the spacing ring 602k is in the annular end face of installation ring groove 602f goes up the spacing fixed of axial snap ring 602d, moreover inboard magnet ring 602g with magnetic attraction is fixed between the magnet ring 602h in the outside, finally guarantees that snap ring 602d only can incline on connecting rope 602c, can not slide by accident, it is the moderate rubber of soft or hard to connect rope 602c material, spacing ring 602k, snap ring 602d are taken together inboard magnet ring 602g is in connect and carry out the forced socket joint card of application of force on the rope 602c and go into, the application of force needs great to guarantee snap ring 602d block the structural stability after installation ring groove 602f and the fixing, wherein the thickness of snap ring 602d, two again the sum of the thickness of spacing ring 602k, with the axial length of installation ring groove 602f is just in time equal, the snap ring 602d is prevented from sliding deleteriously over the mounting ring groove 602 f.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.

Claims

1. A device for marking PTFE sewing threads, comprising a PTFE thread (1), characterized in that: the PTFE thread cutting device is characterized by further comprising a marking ring (2) which is sleeved on the PTFE thread (1) and is close to the end position, an inserting hole (3) which is formed in the side wall of the marking ring (2), a circumferential sliding unit (4) which is arranged in an opening of the marking ring (2), a magnetic clamping unit (5) which is arranged in the opening and is used for clamping and fixing the PTFE thread (1) in a mutual magnetic attraction mode with the circumferential sliding unit (4) which is close to the opening, and an inserting column unit (6) which is inserted into the inserting hole (3) and is used for pushing the circumferential sliding unit (4) towards the direction of the magnetic clamping unit (5);

the annular sliding unit (4) comprises a limiting mounting column (401) arranged in the open hole, an iron plate body (402) used for receiving the magnetic force of the magnetic clamping unit (5) and plate body open holes (403) which are arranged on two sides of the iron plate body (402) and used for inserting the limiting mounting column (401); magnetic clamping unit (5) including set up in the trompil and with iron plate body (402) about the trompil is central symmetry's fluting (501), sets up pulling spring (502) on fluting (501) bottom surface to and the bonding setting be in on the pulling spring (502) and be used for when iron plate body (402) are close to outwards bulge and then compress tightly permanent magnet piece (503) of PTFE line (1).

2. A PTFE sewing thread marking device according to claim 1, wherein: the annular sliding unit (4) further comprises a clamping plate (404) which is arranged at the end position of the limiting mounting column (401) and is fixedly inserted into the plate body opening hole (403), a limiting ring (405) which is arranged in the plate body opening hole (403) and is far away from one side of the magnetic clamping unit (5), a magnet ring (406) which is arranged in the plate body opening hole (403) and is close to one side of the magnetic clamping unit (5), and a second magnet ring (407) which is arranged on the side surface of the clamping plate (404) and is used for withdrawing the iron plate body (402) in a way of mutually magnetic attraction with the magnet ring (406) so as to leave a wire body insertion space between the iron plate body (402) and the permanent magnet sheet (503); the magnetic clamping unit (5) further comprises a limiting cylinder (504) which is arranged on the inner bottom surface of the open groove (501), sleeved outside the pulling spring (502) and used for limiting and supporting the permanent magnet sheet (503).

3. A PTFE sewing thread marking device according to claim 1, wherein: the inserting column unit (6) comprises a pushing column body (601) which is arranged on the inserting hole (3) in an inserting mode and used for pushing the iron plate body (402) inwards, and a column body clamping portion (602) which is arranged on the ring surface of the inserting hole (3) and the ring surface of the pushing column body (601) and used for fixing after the pushing column body (601) is adjusted in a drawing mode.

4. A PTFE sewing thread marking apparatus according to claim 3, wherein: insert post unit (6) still including set up promote on the cylinder (601) anchor ring and be used for in spacing second block board (603) of pegging graft in patchhole (3), promote cylinder (601) medial extremity bonding and set up on iron plate body (402), and the outside end protrusion sets up mark ring (2) outside.

5. A PTFE sewing thread marking apparatus according to claim 3, wherein: cylinder block portion (602) is including setting up bulge loop (602 a) on promoting cylinder (601) anchor ring sets up mounting groove (602 b) on patchhole (3) anchor ring, and both ends set up on two sides of mounting groove (602 b) and with promote the parallel connection rope (602 c) of cylinder (601), and arrange and set up connect rope (602 c) go up and through the block bulge loop (602 a) mode is in order to be used for after promoting cylinder (601) pull regulation carry out a plurality of block loop (602 d) that the block is fixed, bulge loop (602 a) with block loop (602 d) all have the arc anchor ring.

6. A device for marking PTFE sewing thread according to claim 5, wherein: the cylinder clamping part (602) further comprises a fixing plate (602 e) which is arranged on the inner side surface of the mounting groove (602 b) and used for limiting and fixing two sides when the clamping ring (602 d) horizontally clamps and fixes the protruding ring (602 a) in a clamping mode on two sides of the clamping ring (602 d), and the clamping ring (602 d) obliquely slides out from between the fixing plates (602 e) when the protruding ring (602 a) is pulled and adjusted.

7. A PTFE sewing thread marking device according to claim 6, wherein: the fixed plate (602 e) is provided with an arc-shaped side surface which is abutted against the arc-shaped ring surface of the clamping ring (602 d), and two sides of the fixed plate (602 e) clamp the clamping rings (602 d) which are linearly arranged in the same way.

8. A PTFE sewing thread marking device according to claim 6, wherein: cylinder block portion (602) is still including setting up mounting ring groove (602 f) on connecting rope (602 c) the anchor ring, the bonding sets up inboard magnet ring (602 g) on mounting ring groove (602 f) the anchor ring to and the bonding sets up on snap ring (602 d) the inner ring face and through with inboard magnet ring (602 g) carry out magnetic force and attract fixed mode and be used for on connecting rope (602 c) fixed mounting outside magnet ring (602 h) of snap ring (602 d).

9. A PTFE sewing thread marking apparatus according to claim 8, wherein: cylinder block portion (602) still including cup jointing the setting on the mounting ring groove (602 f) anchor ring and support respectively two spacing rings (602 k) on two annular side of mounting ring groove (602 f), the internal diameter of spacing ring (602 k) with mounting ring groove (602 f) section the diameter of connecting rope (602 c) equals.