CN210884492U

CN210884492U - Deviation preventing device for rolling of calender

Info

Publication number: CN210884492U
Application number: CN201921988217.2U
Authority: CN
Inventors: 余佳政; 王斌
Original assignee: Zhejiang Weiger Transmission Co ltd
Current assignee: Zhejiang Weiger Transmission Co ltd
Priority date: 2019-11-16
Filing date: 2019-11-16
Publication date: 2020-06-30
Anticipated expiration: 2029-11-16

Abstract

The utility model relates to a deviation device is prevented in rolling of calender relates to the technical field of calender, which comprises a frame, slide the support frame of setting in the frame, rotate the wind-up roll of setting on the support frame, be provided with the mechanism of rectifying in the frame, the mechanism of rectifying is including setting up in the frame and drive the drive arrangement that the support frame slided, set up in the frame and be close to the subaerial detection frame of feeding one side, two horizontal intervals set up on detecting the frame and be used for detecting the rubber tape crooked and be connected with the detection piece that drive arrangement electricity is connected, set up the adjusting device on detecting the frame. The utility model discloses a position of rubber tape is detected to two detection pieces to this control drive arrangement drive support frame and wind-up roll and remove along the wind-up roll axis, thereby improved the regularity of coiling the rubber tape on the wind-up roll, consequently improved the efficiency of the manufacturing procedure of follow-up rubber tape, thereby improved production efficiency.

Description

Deviation preventing device for rolling of calender

Technical Field

The utility model belongs to the technical field of the technique of calender and specifically relates to a deviation preventing device of rolling of calender is related to.

Background

The calender (calender) is composed of two or more rollers arranged in a certain form, and can be divided into cold pressing and hot pressing, wherein the cold pressing is suitable for materials which do not need to be heated, such as graphite films, graphite sheets, wave-absorbing materials, shielding materials, magnetic materials, nonferrous materials and the like. Hot pressing is a machine which presses and stretches rubber, silica gel or plastic into a film with a certain thickness and surface shape at a certain temperature and can carry out rubberizing on fiber curtain canvas or wirecord fabric.

Wherein rubber forms banded rubber tape through the extrusion of calender, need get up the rubber tape rolling after the rubber tape processing is accomplished, but present calender when the rolling, because reasons such as board shake, the rubber tape of rolling takes place the skew easily, and the rubber tape regularity after the rolling is relatively poor, consequently leads to the efficiency of the manufacturing procedure of follow-up rubber tape lower to production efficiency has been reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a deviation device is prevented in rolling of calender has improved the regularity of coiling the rubber tape on the take-up roll, has consequently improved the efficiency of the manufacturing procedure of follow-up rubber tape to production efficiency has been improved.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a deviation device is prevented in rolling of calender, includes the frame, sets up support frame in the frame, rotates the wind-up roll that sets up on the support frame, the support frame slides along the wind-up roll axis and sets up in the frame, be provided with the mechanism of rectifying that rectifies to the rubber tape in the frame, the mechanism of rectifying slides the drive arrangement who sets up along the wind-up roll axis including setting up drive support frame in the frame, sets up subaerial and the detection frame that supplies the rubber tape to pass through that is close to feeding one side in the frame, two horizontal intervals set up on detecting the frame and be used for detecting the rubber tape crooked and with the detection piece that drive arrangement electricity is connected, set up on detecting the frame and be used for adjusting the adjusting device of distance between two detection pieces.

By adopting the technical scheme, the rubber belt passes through the detection frame and then is wound on the winding roller, the winding roller rotates to wind the rubber belt, when the rubber belt passes through the detection frame, the two detection pieces detect the position of the rubber belt, and the driving device is controlled to drive the supporting frame and the winding roller to move along the axis of the winding roller, so that the uniformity of the rubber belt wound on the winding roller is improved, the efficiency of the subsequent processing procedure of the rubber belt is improved, and the production efficiency is improved; the positions of the two detection pieces are adjusted through the adjusting device, so that when the width of the rubber belt changes, the two detection pieces can also detect the positions of the rubber belt, the detection precision of the detection pieces is improved, and the uniformity of the rubber belt is further improved.

Preferably, a slide way which is parallel to the axis of the winding roller and has a T-shaped cross section is arranged on the rack, and the driving device comprises a T-shaped block which is arranged on the slide way in a sliding manner and is connected with the supporting frame, a driving screw which is arranged on the slide way in a rotating manner and is in threaded connection with the T-shaped block, and a driving assembly which is arranged on the rack and drives the driving screw to rotate.

Through adopting above-mentioned technical scheme, drive assembly starts to drive the drive screw and rotates, and the drive screw rotates and drives the T-shaped piece and remove, and the T-shaped piece removes and drives support frame and wind-up roll removal to this realizes drive assembly and starts the purpose that drives the wind-up roll and remove.

Preferably, the driving assembly comprises a first gear rotatably arranged on the driving screw, a driving motor arranged on the frame, and a second gear arranged on an output shaft of the driving motor and meshed with the first gear.

Through adopting above-mentioned technical scheme, driving motor starts to drive the second gear and rotates, and the second gear rotates and drives first gear rotation, and first gear rotation drives the drive screw and rotates to this realizes driving motor and starts to drive screw pivoted purpose.

Preferably, adjusting device includes that two horizontal intervals set up the regulating block on the vertical lateral wall of detection frame, rotate the adjusting screw who sets up on the lateral wall of two relative one sides of regulating block and be provided with two sections helices opposite direction's screw thread, two difference threaded connection just all contradict the regulation seat on detecting the frame lateral wall on two sections helices opposite direction's of adjusting screw thread, set up the locating plate that is connected on the lateral wall of adjusting the seat and keeping away from detection frame one side and with the detection piece.

Through adopting above-mentioned technical scheme, rotate adjusting screw and drive two regulation seats and remove, two regulation seats remove and drive mounting panel and two detection pieces and remove to this position of adjusting two detection pieces.

Preferably, the adjusting block is worn out to adjusting screw's one end outside, adjusting screw wears out the one end of adjusting block and is provided with the carousel, the carousel is kept away from on adjusting screw's the terminal surface eccentric rotating rod that is provided with.

Through adopting above-mentioned technical scheme, rotate the carousel through the bull stick, the carousel rotates and drives adjusting screw and rotates to this borrows power when being convenient for the staff rotates adjusting screw.

Preferably, be provided with the length direction and adjust the parallel scale of screw axis on the detection frame upper surface, be provided with the pointer of directional scale on adjusting the seat upper surface.

Through adopting above-mentioned technical scheme, through the cooperation of pointer and scale to the staff knows the size of adjusting, has improved the precision when adjusting two detection pieces.

Preferably, the support frame is provided with a mounting plate and a rotating plate in a rotating mode, a plug-in groove matched with the winding roller in a plug-in mode is formed in the side wall, close to one side of the rotating plate, of the mounting plate, a sliding plate matched with the winding roller in a plug-in mode is arranged on the rotating plate in a sliding mode along the axis of the winding roller, and an adjusting assembly used for adjusting the position of the sliding plate to enable the winding roller to be detached from the sliding plate and the mounting plate is arranged on the rotating plate.

By adopting the technical scheme, the position of the sliding plate is adjusted through the adjusting component, so that the distance between the sliding plate and the mounting plate is increased, one end of the winding roller is inserted into the insertion groove, then the position of the sliding plate is adjusted through the adjusting component, and one end, far away from the insertion groove, of the winding roller is inserted into the sliding plate, so that the winding roller is mounted; the position of sliding plate is adjusted to the regulating part simultaneously for the mounting panel is kept away from to the sliding plate, consequently can follow the dismantlement on the mounting panel, realizes the purpose of easy to assemble and dismantlement wind-up roll with this.

Preferably, a square sliding groove is formed in the side wall of the sliding plate, which is close to one side of the rotating plate, and the adjusting assembly comprises a sliding rod which is arranged on the rotating plate and is arranged on the sliding groove in a sliding manner, and a locking screw which penetrates through the sliding plate and is in threaded connection with the sliding plate and the sliding rod; when the winding roller is installed on the sliding plate, the sliding rod is provided with a threaded groove which can be in threaded connection with the locking screw, and when the sliding rod abuts against the bottom of the sliding groove, the winding roller can be detached from the sliding plate.

By adopting the technical scheme, the star-shaped handle is grasped to move the sliding plate so that the winding roller is inserted on the sliding plate, and then the star-shaped handle is screwed so that the locking screw is connected to the thread groove, so that the sliding plate and the collecting roller are fixed; when the winding roller needs to be disassembled, the star-shaped handle is screwed to enable the locking screw to be withdrawn from the thread groove, the sliding plate is moved to enable the sliding rod to abut against the bottom of the sliding groove, and the winding roller can be disassembled from the sliding plate.

To sum up, the utility model discloses a beneficial technological effect does:

1. the position of the rubber belt is detected through the two detection pieces, so that the driving device is controlled to drive the supporting frame and the winding roller to move along the axis of the winding roller, the uniformity of the rubber belt wound on the winding roller is improved, the efficiency of subsequent processing procedures of the rubber belt is improved, and the production efficiency is improved;

2. the two detection pieces are driven to move by rotating the adjusting screw rod, so that the positions of the two detection pieces are adjusted, when the width of the rubber belt is changed, the two detection pieces can also detect the position of the rubber belt, the precision of the detection pieces for detecting the position of the rubber belt is improved, and the uniformity of the rubber belt is further improved;

3. the size required to be adjusted by a worker is facilitated through the matching of the pointer and the scale, and the precision of adjusting the two detection pieces is improved;

4. one end of the winding roller is inserted into the insertion groove, then the sliding plate is moved to enable one end, far away from the insertion groove, of the winding roller to be inserted into the sliding plate, and then the star-shaped handle is screwed to enable the locking screw to be connected to the threaded groove in a threaded mode, so that the collecting roller is fixed; the star-shaped handle is screwed to enable the locking screw to be withdrawn from the thread groove, and the sliding plate roller can be removed from the sliding plate by moving the sliding plate roller, so that the purposes of convenient installation and removal of the winding roller are achieved.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a partial exploded view of the present invention, mainly showing the components on the driving device and the supporting frame;

FIG. 3 is a schematic cross-sectional view of the support frame and components on the support frame along the take-up roll axis;

fig. 4 is a schematic structural diagram of the detection frame and the adjustment device.

Reference numerals: 1. a frame; 11. a support frame; 12. a wind-up roll; 13. a plug rod; 14. mounting a plate; 141. inserting grooves; 15. a rotating plate; 16. a sliding plate; 161. a clamping groove; 162. a sliding groove; 17. a slideway; 2. an adjustment assembly; 21. a slide bar; 22. locking the screw; 3. a deviation rectifying mechanism; 31. a drive device; 311. a T-shaped block; 312. a drive screw; 313. a drive assembly; 3131. a first gear; 3132. a drive motor; 3133. a second gear; 32. detecting a frame; 33. a detection member; 34. an adjustment device; 341. an adjusting block; 342. adjusting the screw rod; 3421. a turntable; 3422. a rotating rod; 343. an adjusting seat; 344. positioning a plate; 4. a scale; 41. a pointer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a device that deviates from, refers to fig. 1 is prevented in rolling of calender, includes frame 1, slides along 1 length direction of frame and sets up support frame 11 in frame 1, rotates on the support frame 11 and installs the wind-up roll 12 that axis and 1 length direction of frame are parallel.

The utility model discloses a winding roller 12's both ends homogeneous body shaping is provided with and is square peg graft 13, rotate on the support frame 11 and install mounting panel 14 and rotor plate 15, and mounting panel 14 and rotor plate 15 set up relatively, set up on the lateral wall that mounting panel 14 is close to rotor plate 15 one side simultaneously and peg graft complex inserting groove 141 with peg graft 13, slide along winding roller 12 axis on the rotor plate 15 and be provided with the sliding plate 16 with winding roller 12 grafting complex, set up on the lateral wall that sliding plate 16 is close to mounting panel 14 one side and peg graft complex joint groove 161 with peg graft 13, and set up the cross-section on the lateral wall that sliding plate 16 deviates from joint groove 161 one side and be square sliding groove 162, be provided with the position of adjusting sliding plate 16 on the rotor plate 15 and make winding roller 12 can follow the adjusting part 2 that sliding plate 16 and mounting panel.

Referring to fig. 2 and 3, the adjusting assembly 2 includes a sliding rod 21 and a locking screw 22, the sliding rod 21 is fixedly installed on the side wall of the rotating plate 15 near one side of the sliding plate 16, and the sliding rod 21 is connected with the sliding groove 162 in a sliding manner, the locking screw 22 passes through the sliding plate 16 and is in threaded connection with both the sliding plate 16 and the sliding rod 21, a threaded groove in threaded fit with the locking screw 22 is formed in the sliding rod 21, when the inserting rod 13 is inserted into the clamping groove 161 and the inserting rod 13 is abutted against the bottom of the clamping groove 161, the locking screw 22 can be in threaded connection with the threaded groove, and when the sliding rod 21 is abutted against the bottom of the sliding groove 162, the inserting rod 13 inserted into the clamping groove 161 can be taken down from the clamping groove 161.

Inserting one of the inserting rods 13 into the inserting groove 141, grasping the star handle to move the sliding plate 16, inserting the inserting rod 13 far away from one side of the inserting groove 141 into the clamping groove 161, then continuously moving the sliding plate 16 and enabling the inserting rod 13 to abut against the bottom of the clamping groove 161, screwing the star handle to connect the locking screw 22 to the threaded groove in a threaded manner, and thus installing the winding roller 12 on the installing plate 14 and the sliding plate 16; when the winding roller 12 needs to be dismounted, the star-shaped handle is screwed to enable the locking screw 22 to be withdrawn from the threaded groove, and the sliding plate 16 is moved to enable the sliding rod 21 to abut against the bottom of the sliding groove 162, so that the winding roller 12 can be dismounted from the sliding plate 16.

Referring to fig. 1 and fig. 2, a frame 1 is provided with a deviation rectifying mechanism 3 for rectifying deviation of a rubber belt, the deviation rectifying mechanism 3 comprises a driving device 31, a detection frame 32, a detection piece 33 and an adjusting device 34, the driving device 31 is arranged on the frame 1, the driving device 31 drives a support frame 11 to slide along the axis of a winding roller 12, the driving device 31 comprises a T-shaped block 311, a driving screw 312 and a driving assembly 313, two slide ways 17 with T-shaped sections are fixedly arranged on the frame 1, the length direction of each slide way 17 is parallel to the axis of the winding roller 12, both ends of the length direction of each slide way 17 are in a closed state, the T-shaped block 311 is fixedly arranged at the bottom end of the support frame 11 and is arranged on the slide ways 17 in a sliding manner, the driving screw 312 is horizontally and rotatably arranged on one of the slide ways 17, the driving screw 312 is in threaded connection with the, the driving assembly 313 is disposed on the frame 1 and drives the driving screw 312 to rotate.

The driving assembly 313 includes a first toothed wheel 3131, a driving motor 3132, and a second toothed wheel 3133, the first toothed wheel 3131 is fixedly installed on the driving screw 312 outside the slideway 17, the driving motor 3132 is fixedly installed on the machine frame 1, the second toothed wheel 3133 is fixedly installed on the output shaft of the driving motor 3132, and the second toothed wheel 3133 is engaged with the first toothed wheel 3131; the driving motor 3132 is activated to rotate the second gear 3133, the second gear 3133 is rotated to rotate the first gear 3131, the first gear 3131 is rotated to rotate the driving screw 312, the driving screw 312 is rotated to move the T-block 311, and the T-block 311 is moved to move the supporting frame 11 and the wind-up roll 12.

Referring to fig. 1 and 3, the detection frame 32 is fixedly installed on the ground of the side, close to the feeding side, of the rack 1, the rubber belt passes through the detection frame 32, the length direction of the detection frame 32 is parallel to the axis of the winding roller 12, two detection pieces 33 are arranged, the detection pieces 33 are arranged on the side wall, close to the side of the rack 1, of the detection frame 32 at intervals along the length direction of the detection frame 32, meanwhile, the detection pieces 33 are used for detecting that the rubber belt is inclined and are electrically connected with the driving device 31, the detection pieces 33 are photoelectric infrared sensors, and the model of the photoelectric infrared sensors is LS-DS20C 1.

The rubber tape is through detecting frame 32 then convolute to the wind-up roll 12 on, the wind-up roll 12 rotates and winds the rubber tape, and when the rubber tape was through detecting frame 32, two detection pieces 33 detected the position of rubber tape to this comes to control driving motor 3132 to start and drives wind-up roll 12 and move along wind-up roll 12 axis, thereby improved the regularity of the rubber tape of coiling to the wind-up roll 12, consequently improved the efficiency of the manufacturing procedure of follow-up rubber tape, thereby improved production efficiency.

Referring to fig. 1 and 4, the adjusting device 34 includes an adjusting block 341, an adjusting screw 342, an adjusting seat 343, and a positioning plate 344, two adjusting blocks 341 are provided, and the adjusting blocks 341 are fixedly installed on the side wall of the detecting frame 32 near the rack 1 at intervals along the length direction of the detecting frame 32, meanwhile, the adjusting blocks 341 are positioned at one side close to the top end of the detection frame 32, the adjusting screw 342 is rotatably installed on the side wall of the opposite side of the two adjusting blocks 341, one end of the adjusting screw 342 penetrates out of the adjusting blocks 341, meanwhile, two sections of threads with opposite spiral lines are arranged on the adjusting screw 342, two adjusting seats 343 are arranged, and the two adjusting seats 343 are respectively in threaded connection with two sections of threads with opposite spiral directions of the adjusting screw 342, meanwhile, the adjusting seat 343 abuts against the vertical side wall of the detecting frame 32, the positioning plate 344 is fixedly mounted on the side wall of the adjusting seat 343 far away from one side of the detecting frame 32, and the detecting piece 33 is vertically mounted on the positioning plate 344.

Rotate adjusting screw 342 and drive two and adjust seat 343 and remove, two are adjusted seat 343 and are removed and drive locating plate 344 and two and detect the piece 33 and remove to when the rubber tape width changes, two detect the position that piece 33 also can detect the rubber tape, improved the precision when detecting piece 33 detects the rubber tape position with this, further improved the regularity of rubber tape. A rotating disc 3421 is fixedly installed at one end of the adjusting screw 342 penetrating out of the adjusting block 341, a rotating rod 3422 is eccentrically and fixedly installed on the end surface of the rotating disc 3421 far away from the adjusting screw 342, and the rotating rod 3422 is convenient for rotating the adjusting screw 342, so that the force is assisted when the worker rotates the adjusting screw 342. The scale 4 with the length direction parallel to the axis of the adjusting screw 342 is fixedly installed on the upper surface of the detection frame 32, and the pointer 41 pointing to the scale 4 is arranged on the upper surface of the adjusting seat 343. The pointer 41 and the scale 4 facilitate the worker to know the adjusted size, improving the accuracy in adjusting the two detecting members 33.

The working principle of the embodiment is as follows:

Rotate adjusting screw 342 and drive two and adjust seat 343 and remove, two are adjusted seat 343 and are removed and drive locating plate 344 and two and detect the piece 33 and remove to when the rubber tape width changes, two detect the position that piece 33 also can detect the rubber tape, improved the precision when detecting piece 33 detects the rubber tape position with this, further improved the regularity of rubber tape.

Inserting one of the inserting rods 13 into the inserting groove 141, moving the sliding plate 16 and inserting the inserting rod 13 far away from the inserting groove 141 into the clamping groove 161, then continuing to move the sliding plate 16 and making the inserting rod 13 abut against the bottom of the clamping groove 161, and then screwing the locking screw 22 onto the threaded groove, so as to install the winding roller 12 on the installation plate 14 and the sliding plate 16; when the winding roller 12 needs to be dismounted, the star-shaped handle is screwed to enable the locking screw 22 to be withdrawn from the threaded groove, and the sliding plate 16 is moved to enable the sliding rod 21 to abut against the bottom of the sliding groove 162, so that the winding roller 12 can be dismounted from the sliding plate 16.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a deviation preventing device of rolling of calender which characterized in that: comprises a frame (1), a support frame (11) arranged on the frame (1), and a wind-up roll (12) rotatably arranged on the support frame (11), the support frame (11) is arranged on the frame (1) in a sliding way along the axis of the wind-up roll (12), a deviation rectifying mechanism (3) for rectifying the deviation of the rubber belt is arranged on the frame (1), the deviation correcting mechanism (3) comprises a driving device (31) arranged on the rack (1) and used for driving the supporting frame (11) to slide along the axis of the winding roller (12), a detection frame (32) arranged on the rack (1) and close to the ground on one side of the feeding and used for allowing the rubber belt to pass through, two detection pieces (33) arranged on the detection frame (32) at intervals and used for detecting the rubber belt to be inclined and electrically connected with the driving device (31), and an adjusting device (34) arranged on the detection frame (32) and used for adjusting the distance between the two detection pieces (33).

2. The winding deviation preventing device of the calender according to claim 1, wherein: the winding device is characterized in that a slide way (17) which is parallel to the axis of the winding roller (12) and has a T-shaped section is arranged on the rack (1), the driving device (31) comprises a T-shaped block (311) which is arranged on the slide way (17) in a sliding mode and is connected with the support frame (11), a driving screw rod (312) which is arranged on the slide way (17) in a rotating mode and is in threaded connection with the T-shaped block (311), and a driving assembly (313) which is arranged on the rack (1) and drives the driving screw rod (312) to rotate.

3. The winding deviation preventing device of the calender according to claim 2, wherein: the driving assembly (313) includes a first gear (3131) rotatably disposed on the driving screw (312), a driving motor (3132) disposed on the frame (1), and a second gear (3133) disposed on an output shaft of the driving motor (3132) and engaged with the first gear (3131).

4. The winding deviation preventing device of the calender according to claim 1, wherein: adjusting device (34) include that two horizontal intervals set up regulating block (341) on detecting frame (32) vertical lateral wall, rotate and set up on the lateral wall of two regulating block (341) relative one side and be provided with two sections helix direction opposite screw thread adjusting screw (342), two difference threaded connection just all contradict on detecting frame (32) lateral wall adjusting seat (343) on two sections helix direction opposite screw threads of adjusting screw (342), set up on adjusting seat (343) keep away from the lateral wall of detecting frame (32) one side and with locating plate (344) that detect piece (33) and be connected.

5. The winding deviation preventing device of the calender according to claim 4, wherein: one end of the adjusting screw rod (342) penetrates out of the adjusting block (341), one end of the adjusting screw rod (342) penetrating out of the adjusting block (341) is provided with a rotary table (3421), and a rotary rod (3422) is eccentrically arranged on the end face, far away from the adjusting screw rod (342), of the rotary table (3421).

6. The winding deviation preventing device of the calender according to claim 4, wherein: the detection device is characterized in that a ruler (4) with the length direction parallel to the axis of the adjusting screw rod (342) is arranged on the upper surface of the detection frame (32), and a pointer (41) pointing to the ruler (4) is arranged on the upper surface of the adjusting seat (343).

7. The winding deviation preventing device of the calender according to claim 4, wherein: the winding device is characterized in that a mounting plate (14) and a rotating plate (15) are arranged on the support frame (11) in a rotating mode, a plug-in groove (141) matched with the winding roller (12) in a plug-in mode is formed in the side wall, close to one side of the rotating plate (15), of the mounting plate (14), a sliding plate (16) matched with the winding roller (12) in a plug-in mode is arranged on the rotating plate (15) in a sliding mode along the axis of the winding roller (12), and an adjusting assembly (2) capable of being detached from the sliding plate (16) and the mounting plate (14) is arranged on the rotating plate (15) in a position of the adjusting sliding plate (16.

8. The winding deviation preventing device of the calender according to claim 7, wherein: a square sliding groove (162) is formed in the side wall, close to one side of the rotating plate (15), of the sliding plate (16), the adjusting assembly (2) comprises a sliding rod (21) which is arranged on the rotating plate (15) and is arranged on the sliding groove (162) in a sliding mode, and a locking screw (22) which penetrates through the sliding plate (16) and is in threaded connection with the sliding plate (16) and the sliding rod (21); when the winding roller (12) is installed on the sliding plate (16), the sliding rod (21) is provided with a threaded groove which can be in threaded connection with the locking screw (22), and when the sliding rod (21) abuts against the bottom of the sliding groove (162), the winding roller (12) can be detached from the sliding plate (16).