CN114985157A

CN114985157A - Spraying equipment of EPS moulding

Info

Publication number: CN114985157A
Application number: CN202210687541.0A
Authority: CN
Inventors: 赖小英
Original assignee: Ganzhou Denghui Decoration Engineering Co ltd
Current assignee: Ganzhou Denghui Decoration Engineering Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-09-02
Anticipated expiration: 2042-06-16
Also published as: CN114985157B

Abstract

The invention relates to spraying equipment, in particular to spraying equipment for EPS decorative lines. The invention aims to provide spraying equipment for EPS decorative lines, which can clamp and fix the EPS decorative lines and automatically spray coating on the whole surfaces of the EPS decorative lines. The invention is realized by the following technical approaches: the utility model provides a spraying equipment of EPS moulding, includes shell, fixed axle, lid etc. and the fixed axle is installed to shell upper portion rear side, and the rotation type is equipped with the lid on the fixed axle. Can place and make its rotation to EPS moulding through putting the thing dish, still can press from both sides the EPS moulding tightly through the clamping piece, so need not artifical handheld alright spray the whole surface in the required spraying position of EPS moulding through shower nozzle spun paint vehicle.

Description

Spraying equipment of EPS moulding

Technical Field

The invention relates to spraying equipment, in particular to spraying equipment for EPS decorative lines.

Background

The EPS decorative line is made of EPS as a core aggregate, an external grid cloth, polymer mortar and other materials, is a decorative component for building facade modeling, and is usually subjected to paint spraying treatment in order to make the EPS decorative line look more attractive.

Patent publication No. CN213287322U discloses an EPS moulding automatic spraying equipment that can evenly spray, including the air pump, the fixed air guide valve that is equipped with in one side on air pump top, the fixed intercommunication of one end of air guide valve and the one end of switching valve, the fixed intercommunication of one of them branch pipe of switching valve and the one end of air duct, the other end and the bottom mounting of spray gun of air duct intercommunication, the one side fixed mounting on spray gun top has the coating kettle, the top of coating kettle outer wall and the inner wall threaded connection of sealed pot lid, the middle part of sealed pot lid bottom and the top fixed connection of collar, the middle part of collar bottom has seted up the screw thread mounting groove, the inner wall of screw thread mounting groove and the top threaded connection of go-between outer wall, the bottom of go-between and the top fixed connection of filter screen section of thick bamboo, this equipment can filter the impurity that contains in the material, avoided impurity to block up the spray gun, guaranteed spray gun normal use, but this equipment needs artifical handheld spray gun to carry out spraying work, when not placing the stability with the EPS moulding, the upset takes place easily for the EPS moulding, and then is difficult to spray coating on the whole surface of EPS moulding.

In view of the above technical problems, it is necessary to design a spraying apparatus for EPS decorative molding, which can clamp and fix the EPS decorative molding and automatically spray the coating on the whole surface of the EPS decorative molding.

Disclosure of Invention

In order to overcome the defect that the existing spraying equipment is difficult to spray the coating on the whole surface of the EPS decorative line when the EPS decorative line is not stably placed when a spray gun is manually held by a hand for spraying, the invention aims to provide the spraying equipment for the EPS decorative line, which can clamp and fix the EPS decorative line and automatically spray the coating on the whole surface of the EPS decorative line.

The invention is realized by the following technical approaches: the utility model provides a spraying equipment of EPS moulding, is including shell, fixed axle and lid, and the fixed axle is installed to shell upper portion rear side, and the rotation type is equipped with the lid on the fixed axle, still including spraying mechanism and rotary clamping mechanism, is equipped with the spraying mechanism who is used for blowout coating on the shell, is equipped with in the shell to press from both sides tight rotary clamping mechanism with the EPS moulding.

As the improvement of above-mentioned scheme, spraying mechanism is including the handle circle, the piston rod, first spring, charging bucket, first retainer plate, the check valve, shower nozzle and first dead lever, first retainer plate is installed on shell outer wall upper portion, evenly install four charging buckets on the first retainer plate, the check valve is all installed to the outside upside of charging bucket, the equal slidingtype of charging bucket downside is equipped with the piston rod, be connected with the handle circle between the piston rod bottom, all be connected with first spring between handle circle and the charging bucket, first dead lever is installed to the equal longitudinal symmetry in the shell in both sides, equal bilateral symmetry is connected with the shower nozzle that is used for spun coating between the first dead lever of front and back both sides, the shower nozzle all communicates with each other with adjacent charging bucket.

As an improvement of the scheme, the device also comprises a rotary cover, and the top of the charging barrel is provided with the rotary cover in a threaded manner.

As the improvement of above-mentioned scheme, rotary clamping mechanism is including the motor, the carousel, the second retainer plate, put the thing dish, clamping piece and second spring, the motor is installed to the bottom in the shell, the carousel is installed to motor output shaft upside, the second retainer plate is installed to the lower part in the shell, the carousel is connected with the second retainer plate rotary type, the thing dish is installed at the carousel top, it is equipped with two clamping pieces that can press from both sides the EPS moulding tightly to put thing dish gliding style, the clamping piece with put all be connected with the second spring between the thing dish.

As the improvement of the scheme, the paint scraper comprises a scraping mechanism capable of scraping the attached paint on the spray head, the scraping mechanism comprises a first slide rail, a third spring and a scraping block, the first slide rail is symmetrically arranged in the shell in a left-right mode, the scraping block capable of scraping the attached paint on the spray head is connected between the upper sides of the first slide rail in a sliding mode, the scraping block is in contact with the spray head, and the third spring is connected between the scraping block and the lower side of the first slide rail.

As the improvement of above-mentioned scheme, still including the limiting mechanism that can further fix the EPS moulding, limiting mechanism is including the second slide rail, the slider, first regulating stem, first torsional spring and second regulating stem, the second slide rail is installed on upper portion in the shell, left front side and the equal slidingtype in right back side are equipped with the slider in the second slide rail, the last rotation type of left front side slider is equipped with the first regulating stem that can push down the EPS moulding, the rotation type of right back side slider is equipped with the second regulating stem, second regulating stem and first regulating stem all with adjacent slider between be connected with two first torsional springs.

As the improvement of above-mentioned scheme, still including the link gear that can make handle circle automatic movement, link gear is including the drive wheel, the belt, double helix pole and fixed block, the fixed block is installed to shell middle part bilateral symmetry, equal rotary type is equipped with the double helix pole that can make handle circle automatic movement after rotating on the fixed block, the drive wheel is all installed at double helix pole downside and carousel middle part, it has the belt all to overlap between the drive wheel of middle drive wheel and the drive wheel of the left and right sides, double helix pole and the equal threaded connection of handle circle.

As the improvement of above-mentioned scheme, still including fixed establishment, fixed establishment is including second dead lever, locking circle and second torsional spring, and the second dead lever is all installed with right rear side to the left front side in shell top, and equal rotary type is equipped with the locking circle on the second dead lever, and the locking circle all is connected with the second torsional spring between the adjacent second dead lever.

The invention has the advantages and positive effects that: 1. can place and make its rotation to EPS moulding through putting the thing dish, still can press from both sides the EPS moulding tightly through the clamping piece, so need not artifical handheld alright spray the whole surface in the required spraying position of EPS moulding through shower nozzle spun paint vehicle.

2. The scraper block moves downwards to scrape off the paint attached to the spray head, so that the spray head can be prevented from being blocked by the paint.

3. Can support the top of EPS moulding through first restriction pole and second restriction pole, so can improve the stability of placing of EPS moulding.

4. The handle ring can be automatically moved under the action of the rotation of the double screw rods, so that the labor can be saved.

Drawings

Fig. 1 is a schematic perspective view of a first viewing angle according to the present invention.

Fig. 2 is a schematic perspective view of a second perspective view according to the present invention.

Fig. 3 is a schematic sectional perspective view of the present invention.

Fig. 4 is a schematic perspective view of a first spraying mechanism according to the present invention.

Fig. 5 is a schematic sectional perspective view of the spray mechanism of the present invention.

Fig. 6 is a schematic perspective view of a second spraying mechanism according to the present invention.

Fig. 7 is a schematic sectional perspective view of a rotary clamping mechanism according to the present invention.

Fig. 8 is a schematic cross-sectional perspective view of a second rotary clamping mechanism of the present invention.

Fig. 9 is a schematic sectional three-dimensional structure of the scraping mechanism of the present invention.

Fig. 10 is a schematic perspective view of the scraping mechanism of the present invention.

FIG. 11 is a schematic perspective view of a first embodiment of a limiting mechanism according to the present invention.

FIG. 12 is a schematic perspective view of a second embodiment of a restraining mechanism according to the present invention.

FIG. 13 is a schematic view of a first cross-sectional perspective structure of the linkage mechanism of the present invention.

FIG. 14 is a schematic cross-sectional perspective view of a linkage mechanism according to the present invention.

Fig. 15 is a perspective view of the fixing mechanism of the present invention.

Fig. 16 is a perspective view of a portion of the fastening mechanism of the present invention.

Number designation in the figures: 1. the device comprises a shell, a 2, a fixed shaft, a 3, a cover, a 4, a spraying mechanism, a 41, a handle ring, a 42, a piston rod, a 43, a first spring, a 44, a charging barrel, a 45, a first fixed ring, a 46, a one-way valve, a 47, a spray head, a 48, a first fixed rod, a 5, a rotary clamping mechanism, a 51, a motor, a 52, a rotary disc, a 53, a second fixed ring, a 54, a storage disc, a 55, a clamping piece, a 56, a second spring, a 6, a scraping mechanism, a 61, a first sliding rail, a 62, a third spring, a 63, a scraping block, a 7, a limiting mechanism, a 71, a second sliding rail, a 72, a sliding block, a 73, a first limiting rod, a 74, a first torsion spring, a 75, a second limiting rod, a 8, a linkage mechanism, a 81, a transmission wheel, a 82, a belt, a 83, a double-spiral rod, a 84, a fixed block, a 9, a fixed mechanism, a 91, a second fixed rod, a 92, a locking ring, a 93 and a second torsion spring, a rotary cover.

Detailed Description

The invention is further described below with reference to the drawings and examples.

Example 1

A spraying device for EPS decorative lines is shown in figures 1-3 and comprises a shell 1, a fixed shaft 2, a cover 3, a spraying mechanism 4 and a rotary clamping mechanism 5, wherein the fixed shaft 2 is fixedly connected to the rear side of the upper portion of the shell 1, the cover 3 is rotatably arranged on the fixed shaft 2, the spraying mechanism 4 is arranged on the shell 1 and used for spraying paint, the rotary clamping mechanism 5 is arranged in the shell 1, and the EPS decorative lines can be clamped tightly by the rotary clamping mechanism 5.

Referring to fig. 4-6, the spraying mechanism 4 includes a handle ring 41, a piston rod 42, a first spring 43, charging barrels 44, a first fixing ring 45, a check valve 46, a spray head 47 and a first fixing rod 48, the upper portion of the outer wall of the housing 1 is fixedly connected with the first fixing ring 45, the first fixing ring 45 is uniformly and fixedly connected with four charging barrels 44, the upper side of the outer portion of each charging barrel 44 is fixedly connected with the check valve 46, the lower side of each charging barrel 44 is provided with the piston rod 42 in a sliding manner, the bottom of the piston rod 42 is connected with the handle ring 41, the handle ring 41 and the charging barrels 44 are connected with the first spring 43, the front side and the rear side of the housing 1 are respectively welded with the first fixing rods 48 in an up-down symmetrical manner, the spray heads 47 are respectively welded between the first fixing rods 48 in the front side and the rear side in a left-right symmetrical manner, the spray heads 47 are used for spraying out the coating, and the spray heads 47 are respectively communicated with the adjacent charging barrels 44.

Referring to fig. 4, the cover 10 is further included, and the top of the charging barrel 44 is provided with the cover 10 in a threaded manner.

Referring to fig. 7 and 8, the rotary clamping mechanism 5 includes a motor 51, a rotating disc 52, a second fixing ring 53, a storage disc 54, a clamping piece 55 and a second spring 56, the motor 51 is fixedly connected to the bottom of the housing 1, the rotating disc 52 is welded to the upper side of the output shaft of the motor 51, the second fixing ring 53 is welded to the lower portion of the housing 1, the rotating disc 52 is rotatably connected to the second fixing ring 53, the storage disc 54 is welded to the top of the rotating disc 52, two clamping pieces 55 are slidably arranged on the storage disc 54, the clamping pieces 55 can clamp EPS decorative lines, and the second spring 56 is connected between each clamping piece 55 and the storage disc 54.

When the EPS decorative strip needs to be painted, a worker can upwards rotate the cover 3 to open the shell 1, then the EPS decorative strip can be placed into the shell 1, then downwards rotate the cover 3 to close the shell 1, at the moment, the EPS decorative strip is placed on the placing disc 54 and can be contacted with the clamping piece 55 in the placing process of the EPS decorative strip, so that the clamping piece 55 moves outwards, the second spring 56 is compressed, so that the clamping piece 55 can always abut against the EPS decorative strip under the counter-acting force of the second spring 56, the EPS decorative strip can be clamped, then the motor 51 can be started to work, the output shaft of the motor 51 rotates to drive the rotating disc 52, the placing disc 54, the clamping piece 55 and the second spring 56 to rotate, the placing disc 54 rotates to drive the EPS decorative strip to rotate due to the fact that the EPS decorative strip is clamped, at the moment, the handle ring 41 can be pushed to drive the piston rod 42 to upwards move, the first spring 43 is compressed and the upward movement of the piston rod 42 under the action of the one-way valve 46 pushes the paint in the hopper 44 through the spray head 47, so that it can be sprayed on the rotating EPS moulding, further completing the spraying operation, the case 1 is closed to prevent the paint from being thrown out of the case 1 when the EPS decorative lines rotate, the handle ring 41 is not pushed after the spraying operation is completed, the piston rod 42 and the handle ring 41 are moved downwards and reset under the action of the first spring 43, then the motor 51 is stopped, the cover 3 is rotated upwards again, the sprayed EPS decorative lines are taken down, so that the clamping member 55 is moved to the outside by the second spring 56, and when the paint needs to be replenished into the charging bucket 44, the paint can be replenished into the charging bucket 44 by rotating the screw cap 10 away from the charging bucket 44, and then the screw cap 10 can be rotated back into the charging bucket 44.

Example 2

On the basis of embodiment 1, as shown in fig. 3, 9 and 10, the paint sprayer further comprises a scraping mechanism 6, the scraping mechanism 6 can scrape paint attached to the sprayer 47, the scraping mechanism 6 comprises a first slide rail 61, a third spring 62 and a scraping block 63, the first slide rail 61 is welded in the shell 1 in a bilateral symmetry mode, the scraping block 63 is connected between the upper sides of the first slide rails 61 in a sliding mode, the scraping block 63 can scrape the paint attached to the sprayer 47, the scraping block 63 is in contact with the sprayer 47, and the third spring 62 is connected between the scraping block 63 and the lower side of the first slide rail 61.

Before spraying, a worker can push the scraper block 63 to move downwards, the third spring 62 is compressed, the scraper block 63 moves downwards to scrape off paint attached to the spray head 47, so that the spray head 47 is prevented from being blocked to influence paint spraying, and then the scraper block 63 is loosened, and the scraper block 63 moves upwards to reset under the action of the third spring 62.

Referring to fig. 3, 11 and 12, the EPS decorative molding fixing device further comprises a limiting mechanism 7, the limiting mechanism 7 can further fix the EPS decorative molding, the limiting mechanism 7 comprises a second slide rail 71, a slide block 72, a first limiting rod 73, a first torsion spring 74 and a second limiting rod 75, the second slide rail 71 is welded at the upper portion in the shell 1, the slide block 72 is arranged at the left front side and the right rear side in the second slide rail 71 in a sliding manner, the first limiting rod 73 is arranged on the left front side slide block 72 in a rotating manner, the EPS decorative molding can be pressed by the first limiting rod 73, the second limiting rod 75 is arranged on the right rear side slide block 72 in a rotating manner, and two first torsion springs 74 are connected between the second limiting rod 75 and the adjacent slide block 72 and between the first limiting rod 73 and the adjacent slide block 72.

Before the EPS decorative line needs to be placed, a worker can firstly rotate the second limiting rod 75 and the first limiting rod 73 upwards, the first torsion spring 74 deforms, then the EPS decorative line can be placed, the second limiting rod 75 and the first limiting rod 73 are loosened, the second limiting rod 75 and the first limiting rod 73 rotate and reset under the action of the first torsion spring 74, the second limiting rod 75 and the first limiting rod 73 can be pressed on the top of the EPS decorative line, the top of the EPS decorative line can be limited, the situation that when spraying is carried out, too many parts of the upper portion of the EPS decorative line which are not fixed easily fall down is avoided, the EPS decorative line can drive the second limiting rod 75, the first limiting rod 73 and the sliding block 72 to rotate when spraying is carried out, the sliding block 72 can slide on the second sliding rail 71, the second limiting rod 75 and the first limiting rod 73 are pulled again after spraying, the EPS decorative line is not pressed any more upwards after the spraying is finished, the first torsion spring 74 is deformed to remove the EPS molding, and then the second restricting lever 75 and the first restricting lever 73 are released.

Referring to fig. 3, 13 and 14, the automatic handle turning device further comprises a linkage mechanism 8, the linkage mechanism 8 can enable the handle ring 41 to automatically move, the linkage mechanism 8 comprises a driving wheel 81, a belt 82, a double-screw rod 83 and a fixing block 84, the fixing block 84 is welded in the middle of the shell 1 in a bilateral symmetry mode, the double-screw rod 83 is arranged on the fixing block 84 in a rotating mode, the handle ring 41 can automatically move after the double-screw rod 83 rotates, the driving wheels 81 are arranged on the lower side of the double-screw rod 83 and the middle of the rotary table 52, the belt 82 is sleeved between the middle driving wheel 81 and the driving wheels 81 on the left side and the right side, and the double-screw rod 83 and the handle ring 41 are in threaded connection.

The rotation of the turntable 52 drives the double screw rod 83 to rotate through the belt 82 and the transmission wheel 81, the double screw rod 83 drives the handle ring 41 to move up and down, so that the paint in the charging bucket 44 can be automatically sprayed out, and when the handle ring 41 moves downwards and is reset, the spraying work is finished.

Referring to fig. 3, 15 and 16, the fixing device 9 further includes a fixing mechanism 9, the fixing mechanism 9 includes a second fixing rod 91, a locking ring 92 and a second torsion spring 93, the second fixing rod 91 is welded to the left front side and the right rear side of the top of the housing 1, the locking ring 92 is rotatably arranged on the second fixing rod 91, and the second torsion spring 93 is connected between each locking ring 92 and the adjacent second fixing rod 91.

The first limiting rod 73 rotates to contact with the left locking ring 92 and then continues to rotate, so that the left locking ring 92 rotates, the left second torsion spring 93 deforms, after the first limiting rod 73 rotates to pass over the left locking ring 92, the left locking ring 92 rotates and resets under the action of the left second torsion spring 93, the left locking ring 92 rotates and resets to hook the first limiting rod 73, after the second limiting rod 75 rotates to contact with the right locking ring 92 and then continues to rotate, so that the right locking ring 92 rotates, the right second torsion spring 93 deforms, after the second limiting rod 75 rotates to pass over the right locking ring 92, the right locking ring 92 rotates and resets under the action of the right second torsion spring 93, the right locking ring 92 rotates and resets to hook the second limiting rod 75, and therefore, when a worker is in independent operation, the EPS decoration line needs to be put in while the second limiting rod 75 and the first limiting rod 73 are controlled not to rotate and reset, after the EPS decorative molding is put, the first limiting rod 73 and the second limiting rod 75 are not hooked by the locking ring 92 when the EPS decorative molding is pulled, the second torsion spring 93 deforms, the first limiting rod 73 and the second limiting rod 75 can rotate to reset, the locking ring 92 is loosened, and the locking ring 92 rotates to reset under the action of the second torsion spring 93.

The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a spraying equipment of EPS moulding, including shell (1), fixed axle (2) and lid (3), fixed axle (2) are installed to shell (1) upper portion rear side, and the rotation type is equipped with lid (3), characterized by on fixed axle (2): the coating machine is characterized by further comprising a spraying mechanism (4) and a rotary clamping mechanism (5), wherein the spraying mechanism (4) used for spraying coating is arranged on the shell (1), and the rotary clamping mechanism (5) capable of clamping EPS decorative lines is arranged in the shell (1).

2. The coating apparatus of EPS molding according to claim 1, wherein: the spraying mechanism (4) comprises a handle ring (41), a piston rod (42), a first spring (43), a charging barrel (44), a first fixing ring (45), a one-way valve (46), a spray head (47) and a first fixing rod (48), wherein the first fixing ring (45) is installed on the upper portion of the outer wall of the shell (1), four charging barrels (44) are evenly installed on the first fixing ring (45), the one-way valve (46) is installed on the upper side of the outer portion of each charging barrel (44), the piston rod (42) is arranged on the lower side of each charging barrel (44) in a sliding mode, the handle ring (41) is connected between the bottom of each piston rod (42), the first springs (43) are connected between the handle ring (41) and the charging barrels (44), the first fixing rods (48) are installed on the front side and the rear side of the shell (1) in an up-down symmetrical mode, the spray heads (47) used for spraying paint are connected between the first fixing rods (48) on the front side and the rear side in a left-right symmetrical mode, the spray heads (47) are all communicated with the adjacent charging barrels (44).

3. The coating apparatus of EPS molding according to claim 2, wherein: the device also comprises a screw cap (10), and the screw caps (10) are arranged at the tops of the charging barrels (44) in a threaded manner.

4. The coating apparatus of EPS molding according to claim 1, wherein: rotary clamping mechanism (5) is including motor (51), carousel (52), second retainer plate (53), put thing dish (54), clamping piece (55) and second spring (56), motor (51) are installed to the bottom in shell (1), carousel (52) are installed to motor (51) output shaft upside, second retainer plate (53) are installed to the lower part in shell (1), carousel (52) are connected with second retainer plate (53) rotary type, thing dish (54) are installed at carousel (52) top, it is equipped with two clamping pieces (55) that can press from both sides EPS moulding tightly to put thing dish (54) gliding type, clamping piece (55) with put and all be connected with second spring (56) between thing dish (54).

5. The coating apparatus of EPS molding according to claim 2, wherein: still including scraping material mechanism (6) of scraping adnexed coating on shower nozzle (47) that falls, scrape material mechanism (6) including first slide rail (61), third spring (62) and scrape material piece (63), first slide rail (61) are installed to bilateral symmetry in shell (1), sliding connection has between first slide rail (61) the material piece (63) of scraping adnexed coating on can scraping shower nozzle (47), scrape material piece (63) and shower nozzle (47) and all contact, scrape all be connected with third spring (62) between material piece (63) and first slide rail (61) downside.

6. The coating apparatus of EPS molding according to claim 1, wherein: still including limiting mechanism (7) that can further fix the EPS moulding, limiting mechanism (7) is including second slide rail (71), slider (72), first regulating beam (73), first torsional spring (74) and second regulating beam (75), second slide rail (71) are installed to upper portion in shell (1), left front side and right back side are all slided in second slide rail (71) and are equipped with slider (72), the last rotation type of left front side slider (72) is equipped with first regulating beam (73) that can push down the EPS moulding, the last rotation type of right back side slider (72) is equipped with second regulating beam (75), be connected with two first torsional springs (74) between second regulating beam (75) and first regulating beam (73) and adjacent slider (72).

7. The coating apparatus of EPS molding according to claim 4, wherein: still including link gear (8) that can make handle circle (41) automatic movement, link gear (8) are including drive wheel (81), belt (82), double helix pole (83) and fixed block (84), fixed block (84) are installed to shell (1) middle part bilateral symmetry, equal rotary type is equipped with double helix pole (83) that can make handle circle (41) automatic movement after the rotation on fixed block (84), drive wheel (81) are all installed in double helix pole (83) downside and carousel (52) middle part, all overlap between drive wheel (81) in the middle of and drive wheel (81) of the left and right sides and have belt (82), double helix pole (83) and the equal threaded connection of handle circle (41).

8. The spraying equipment of EPS moulding according to claim 1, characterized in that: the novel fixing device is characterized by further comprising a fixing mechanism (9), wherein the fixing mechanism (9) comprises a second fixing rod (91), a locking ring (92) and a second torsion spring (93), the second fixing rod (91) is installed on the left front side and the right rear side of the top of the shell (1), the locking ring (92) is arranged on the second fixing rod (91) in a rotating mode, and the second torsion spring (93) is connected between the locking ring (92) and the adjacent second fixing rod (91).