CN112605239A

CN112605239A - Four-hole type button stamping device

Info

Publication number: CN112605239A
Application number: CN202011261332.7A
Authority: CN
Inventors: 张壮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-04-06

Abstract

The invention relates to a punching device, in particular to a four-hole type button punching device. The four-hole type button punching device can automatically punch holes on buttons, simultaneously punch holes on a plurality of buttons and improve the working efficiency. A four-hole button stamping device comprises: the mounting plate is used for mounting the whole device; the stamping assembly is arranged on the mounting plate and provides power for stamping; the rotating assembly is arranged on the mounting plate and rotates in a rotating mode; the blanking placing assembly is installed on the installation plate and is used for blanking in a sliding mode. According to the button punching machine, the push rod is matched with the first wedge-shaped block, a plurality of buttons can be quickly punched, the working efficiency is improved, the fan-shaped gear is matched with the double-sided rack, the blanking placing assembly can be driven to rotate and replace the next row after the buttons are punched, and the blanking barrel is matched with the circular baffle plate, so that the buttons can be quickly blanked.

Description

Four-hole type button stamping device

Technical Field

The invention relates to a punching device, in particular to a four-hole type button punching device.

Background

Buttons are manufactured by a lower clothes of the upper clothes in the generations of China, regardless of the fact that men and women wear two pieces of clothes of the lower clothes of the upper clothes, officers specially managing and manufacturing full dresses are arranged inwards, when civilian officers and officers make a large classics, the full dresses must be worn, buttons are arranged on the full dresses to tighten the clothes, the buttons are widely used in the modern society, and therefore punching holes need to be punched in the button manufacturing process to ensure that the buttons can be sewn on clothes and other clothes.

Patent publication No. CN207735988U discloses a full-automatic button perforating device. The full-automatic button punching device comprises a workbench; the material receiving plate is fixed on the workbench; the first pneumatic sliding rail is fixed on the workbench; a feeding mechanism; a blanking mechanism; a vacuum pump; the rotary table is rotatably connected to the surface of the workbench; a motor; the fixing pile is fixed on the turntable; the electromagnet is arranged on the inner wall of the fixing pile; the spring is fixed on the inner side of the fixing pile; a fixed iron plate fixed to an inner side of the spring; screening a screen; a dust collection chamber; the fan is arranged inside the rotary disc; and a punching mechanism. According to the invention, the button is perforated in a rotating mode, and the button can be perforated in such a mode, but only one button can be perforated one by one, and only one button can be perforated each time of perforation, so that the working efficiency is low, and the manpower resource consumption is large.

Therefore, a four-hole button punching device capable of automatically punching holes on buttons, simultaneously punching holes on a plurality of buttons and improving the working efficiency needs to be developed.

Disclosure of Invention

In order to overcome the mode that punches the button at present and can only carry out trompil, work efficiency low to a button at every turn trompil, consume manpower resources's shortcoming, the technical problem is: the four-hole type button punching device can automatically punch holes on buttons, simultaneously punch holes on a plurality of buttons and improve the working efficiency.

The technical scheme is as follows: a four-hole button stamping device comprises: the mounting plate is used for mounting the whole device; the stamping assembly is arranged on the mounting plate and provides power for stamping; the rotating assembly is arranged on the mounting plate and rotates in a rotating mode; the blanking placing assembly is installed on the installation plate and is used for blanking in a sliding mode.

Further, the punching component comprises: the fixing plate is arranged on the mounting plate; the speed reducing motor is arranged on the fixing plate; the first rotating rod is arranged on an output shaft of the speed reducing motor; the push rod is arranged on the first rotating rod; the special-shaped plate is arranged on the mounting plate; two fixed rods are arranged on the special-shaped plate; the sliding sleeve is arranged on the fixed rod in a sliding manner; the first spring is connected between the sliding sleeve and the fixed rod; a circular plate installed between the sliding sleeves; the first wedge-shaped block is arranged on the circular plate; and at least two stamping rods are arranged on the circular plate.

Further, the rotating assembly comprises: the sector gear is arranged on the first rotating rod; the sliding rail is arranged on the fixing plate; the sliding block is arranged in the sliding rail in a sliding manner; the second spring is connected between the sliding block and the sliding rail; the double-sided rack is arranged on the sliding block and matched with the sector gear; the second rotating rod is arranged on the mounting plate; the overrunning clutch is rotatably arranged on the second rotating rod; and the full gear is arranged on the overrunning clutch and is matched with the double-sided rack.

Further, the subassembly is placed in the unloading including: at least two rotating plates are arranged on the second rotating rod, and through holes are formed in the rotating plates; at least two placing blocks are arranged on the rotating plate; the L-shaped plate is arranged on the mounting plate; the feeding barrels are at least two and are arranged on the L-shaped plate; the hopper is arranged on the lower charging barrel; the first L-shaped rod is arranged on the L-shaped plate; at least two second L-shaped rods are arranged on the first L-shaped rod in a sliding manner; and the circular baffle is arranged on the second L-shaped rod and matched with the blanking barrel.

Further, the method also comprises the following steps: the straight rod is slidably mounted on the fixing plate; the number of the ejector rods is at least two, and the ejector rods are arranged on the straight rod; the handle is arranged on the straight rod.

Further, the method also comprises the following steps: the first belt pulley is arranged on the first rotating rod; the cylinder is rotatably arranged on the mounting plate; the first contact rod is arranged on the ejector rod and is connected with the cylinder in a sliding manner; a second pulley mounted on the cylinder; and the flat belt is arranged between the second belt pulley and the first belt pulley.

Further, the method also comprises the following steps: the moving rod is arranged on the double-sided rack; the second wedge-shaped block is arranged on the movable rod; the transverse plate is arranged between the second L-shaped rods; the second contact rod is arranged on the transverse plate and matched with the second wedge-shaped block; and the third spring is connected between the second L-shaped rod and the first L-shaped rod.

Further, the method also comprises the following steps: the placing rod is arranged on the mounting plate; at least two U-shaped rods are arranged on the placing rod; at least two guide wheels are rotatably arranged on the U-shaped rod, and the guide wheels are matched with the placing rod; and the collecting frame is placed in the placing rod.

Further, the method also comprises the following steps: the number of the vertical rods is at least two, and the vertical rods are arranged on the circular plate in a sliding mode; the circular pressing block is arranged between the vertical rods; the limiting block is arranged on the vertical rod and matched with the circular plate; and the fourth spring is connected between the vertical rod and the circular plate.

The beneficial effects are that: the invention can rapidly punch a plurality of buttons by matching the push rod with the first wedge-shaped block, improves the working efficiency, can drive the blanking placing assembly to rotate and replace the next row after the buttons are punched by matching the sector gear with the double-sided rack, can rapidly blank the buttons by matching the blanking cylinder with the circular baffle, can rapidly push the buttons out of the placing block by matching the straight rod with the ejector rod, can automatically push the buttons by matching the cylinder with the first contact rod without manually pulling, can automatically blank the buttons by matching the second wedge-shaped block with the second contact rod without manually pulling, can rapidly collect button waste materials by matching the placing rod with the collecting frame, effectively prevents the button waste materials from falling onto the mounting plate, and can effectively prevent the button waste materials from falling off by matching the vertical rod with the circular pressing block, can fix the button when carrying out the punching press to the button, fly by the bullet when effectively preventing the button punching press.

Drawings

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

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

FIG. 3 is a schematic view of a first partial body structure according to the present invention.

FIG. 4 is a schematic view of a second partial body structure according to the present invention.

Fig. 5 is a perspective view of a third embodiment of the present invention.

Fig. 6 is a perspective view of a fourth embodiment of the present invention.

Part names and serial numbers in the figure: 1_ mounting plate, 2_ fixing plate, 3_ reduction motor, 4_ first rotating bar, 5_ push rod, 6_ profile plate, 7_ fixing rod, 8_ sliding sleeve, 9_ first spring, 10_ circular plate, 1001_ first wedge block, 11_ punching rod, 12_ sector gear, 13_ sliding rail, 14_ sliding block, 15_ second spring, 16_ double-sided rack, 17_ second rotating bar, 171_ overrunning clutch, 172_ full gear, 18_ rotating plate, 19_ placing block, 20_ L-shaped plate, 21_ charging barrel, 22_ hopper, 23_ first L-shaped bar, 24_ second L-shaped bar, 25_ circular baffle, 26_ straight bar, 27_ push rod, 28_ handle, 29_ first pulley, 30_ cylinder, 31_ first contact bar, 32_ second pulley, 33_ flat belt, 34_ moving bar, 35_ second wedge block, 36_ horizontal plate, 37_ second contact bar, 371_ third spring, 38_ place pole, 39_ U type pole, 40_ leading wheel, 41_ collection frame, 42_ montant, 43_ circular according to piece, 44_ stopper, 45_ fourth spring.

Detailed Description

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

Example 1

The utility model provides a four-hole formula button stamping device, as shown in fig. 1 to 6, including mounting panel 1, punching press subassembly, the subassembly is placed to rotating assembly and unloading, mounting panel 1 is used for installing whole device, and 1 middle part left side of mounting panel is equipped with the punching press subassembly that provides power and carry out the punching press, and 1 top central point of mounting panel puts and is equipped with the rotating assembly who carries out the rotation through the rotation mode, punching press subassembly and rotating assembly cooperation, and 1 upper portion right side of mounting panel is equipped with the unloading of carrying out the unloading through the slip mode and places the subassembly.

When needs carry out the punching press to the button, the staff places a certain amount of button earlier in the subassembly is placed to the unloading, then starts the punching press subassembly and carries out the punching press to the button of below, simultaneously, drives rotating assembly and rotates, and the one row of button rotation to punching press subassembly lower extreme about the subassembly is placed to the drive unloading, then repeats above-mentioned action and carries out the punching press, and the button that the staff finishes with the punching press afterwards is placed the subassembly from the unloading and is taken out can.

As shown in fig. 1 to 3, the punching assembly comprises a fixing plate 2, a speed reducing motor 3, a first rotating rod 4, a push rod 5, a special-shaped plate 6, a fixing rod 7, a sliding sleeve 8, a first spring 9, a circular plate 10, a first wedge 1001 and a punching rod 11, the fixing plate 2 is fixedly connected to the top of the mounting plate 1 through a bolt, the speed reducing motor 3 is fixedly connected to the left side of the top of the fixing plate 2 through a bolt, the first rotating rod 4 is arranged on an output shaft of the speed reducing motor 3, the push rod 5 is welded to the lower portion of the first rotating rod 4, the special-shaped plate 6 is fixedly connected to the left portion of the mounting plate 1 through a bolt, the fixing rod 7 is welded to the top of the special-shaped plate 6, the fixing rod 7 is provided with two fixing rods 7, the sliding sleeve 8 is arranged on the fixing rod 7 in a sliding manner, the first spring 9 is connected between the sliding, the bottom of the circular plate 10 is welded with stamping rods 11, and four stamping rods 11 are in one group, and four groups are provided.

After the staff placed the button, start gear motor 3 and rotate, drive first pivot lever 4 and rotate, and then drive push rod 5 and rotate, when push rod 5 and first wedge 1001 contact, promote first wedge 1001 downstream, drive circular slab 10 downstream, thereby drive slip cap 8 and slide down, first spring 9 compression, drive ram rod 11 downstream and place the button on the subassembly to the unloading and carry out the punching press, when push rod 5 breaks away from with first wedge 1001, drive slip cap 8 and the upper mounting rebound of putting under the effect of first spring 9 and reset, so, can be quick carry out the punching press to a plurality of buttons, and the work efficiency is improved.

As shown in fig. 1, 2 and 4, the rotating assembly includes a sector gear 12, a slide rail 13, a sliding block 14, a second spring 15, a double-sided rack 16, a second rotating rod 17, an overrunning clutch 171 and a full gear 172, the sector gear 12 is disposed on the upper portion of the first rotating rod 4, the slide rail 13 is fixedly connected to the left portion of the fixing plate 2 through a screw, the sliding block 14 is slidably disposed in the slide rail 13, the second spring 15 is connected between the sliding block 14 and the slide rail 13, the double-sided rack 16 is fixedly connected to the top of the sliding block 14 through a screw, the double-sided rack 16 is matched with the sector gear 12, the second rotating rod 17 is rotatably disposed at the center of the mounting plate 1, the overrunning clutch 171 is rotatably disposed at the top of the second rotating rod 17, the full gear 172 is disposed on the outer side of the.

When the first rotating rod 4 rotates, the sector gear 12 is driven to rotate, when the sector gear 12 is in contact with the double-sided rack 16, the double-sided rack 16 is pushed to move rightwards, the sliding block 14 is driven to slide rightwards, the full gear 172 is pushed to rotate, the overrunning clutch 171 is driven to rotate, the second rotating rod 17 is driven to rotate, when the sector gear 12 is separated from the double-sided rack 16, the sliding block 14 and the upper device of the sliding block are driven to move leftwards to reset under the action of the second spring 15, the full gear 172 is pulled to rotate reversely, the overrunning clutch 171 is driven to idle, and therefore, after the button is punched, the blanking placing assembly is driven to rotate to replace the next row.

As shown in fig. 1, 2 and 5, the blanking placing component comprises a rotating plate 18, a placing block 19 and an L-shaped plate 20, lower feed cylinder 21, hopper 22, first L type pole 23, second L type pole 24 and circular baffle 25, second bull stick 17 upper portion is equipped with commentaries on classics board 18, commentaries on classics board 18 has four, all open five through-holes on the commentaries on classics board 18, change 18 top of board and have through the screw rigid coupling place piece 19, it has five to place piece 19, 1 right part of mounting panel has L template 20 through the bolt rigid coupling, 20 left parts of L template have feed cylinder 21 through the screw rigid coupling, feed cylinder 21 has five, feed cylinder 21 top all has hopper 22 through the screw rigid coupling down, 20 front side upper portion welding of L template has first L type pole 23, first L type pole 23 left part slidingtype is equipped with second L type pole 24, second L type pole 24 has five, second L type pole 24 rear end all has circular baffle 25 through the rigid coupling screw, circular baffle 25 cooperates with feed cylinder 21 down.

After finishing the button punching press, the staff puts into a quantitative button in earlier hopper 22, then the button passes through hopper 22 landing to feed cylinder 21 in, and then the button of below is located circular baffle 25, when second bull stick 17 rotates afterwards, it rotates to drive commentaries on classics board 18, thereby it removes to drive to place piece 19, the staff can stimulate second L type pole 24 and slide forward, it opens feed cylinder 21 down to drive circular baffle 25 forward movement, make the button in the feed cylinder 21 drop to placing piece 19 on, when all placing the button in piece 19, the staff can promote second L type pole 24 and remove backward and reset, it resets to drive circular baffle 25 backward movement and closes feed cylinder 21 down, so, can carry out quick unloading with the button.

Example 2

On the basis of the embodiment 1, as shown in fig. 1, 2 and 6, the fixing plate further comprises a straight rod 26, a push rod 27 and a handle 28, the straight rod 26 is movably arranged on the front side of the lower portion of the fixing plate 2, the push rod 27 is welded on the top of the straight rod 26, five push rods 27 are arranged, and the handle 28 is welded on the front side of the straight rod 26.

After the button is punched, when the rotating plate 18 is located above the ejector rod 27, a worker pulls the handle 28 to move upwards to drive the straight rod 26 to slide upwards so as to drive the ejector rod 27 to move upwards to penetrate through the rotating plate 18 to push out the button in the placing block 19, after the button in the placing block 19 is pushed out, the worker loosens the handle 28 to drive the straight rod 26 and the upper device to move downwards to reset under the action of the gravity of the ejector rod 27, and therefore the button can be quickly pushed out from the placing block 19.

On the basis of embodiment 1, as shown in fig. 1, 2 and 6, the device further includes a first belt pulley 29, a cylinder 30, a first contact rod 31, a second belt pulley 32 and a flat belt 33, the first belt pulley 29 is disposed on the upper portion of the first rotating rod 4, the cylinder 30 is rotatably disposed on the front side of the top portion of the mounting plate 1, the first contact rod 31 is welded on the left side of the ejector rod 27, the first contact rod 31 is slidably connected with the cylinder 30, the second belt pulley 32 is disposed on the top portion of the cylinder 30, and the flat belt 33 is wound between the second belt pulley 32 and the first belt pulley 29.

When the first rotating rod 4 rotates, the first belt pulley 29 is driven to rotate, the second belt pulley 32 is driven to rotate through the flat belt 33, the cylinder 30 is driven to rotate, the first contact rod 31 is driven to move up and down, the straight rod 26 and the upper device of the straight rod are driven to move up and down, and therefore the button can be automatically pushed without being manually pulled.

On the basis of embodiment 1, as shown in fig. 1, 2, 4 and 5, the double-sided rack 16 further includes a moving rod 34, a second wedge-shaped block 35, a transverse plate 36, a second contact rod 37 and a third spring 371, the moving rod 34 is welded on the right side of the double-sided rack 16, the second wedge-shaped block 35 is fixedly connected to the right side of the bottom of the moving rod 34 through a screw, the transverse plate 36 is fixedly connected between the top ends of the second L-shaped rods 24 through a screw, the second contact rod 37 is welded on the right side of the rear side of the transverse plate 36, the second contact rod 37 is matched with the second wedge-shaped block 35, and the third spring 371 is connected between the second L-shaped rod 24 and the first L-shaped rod 23.

When the double-sided rack 16 moves rightwards, the moving rod 34 is driven to move rightwards, the second wedge-shaped block 35 is driven to move rightwards, the second contact rod 37 is pushed to move forwards, the transverse plate 36 is driven to move forwards, the second L-shaped rod 24 is driven to slide forwards, the third spring 371 is compressed, when the double-sided rack 16 moves leftwards, the moving rod 34 is driven to move leftwards, the second wedge-shaped block 35 moves leftwards, when the second wedge-shaped block 35 is separated from the second contact rod 37, the second L-shaped rod 24 and the upper device of the second L-shaped rod are driven to move backwards under the action of the third spring 371, and therefore, blanking can be automatically carried out on buttons, and manual pulling is not needed.

On the basis of the embodiment 1, as shown in fig. 1 and fig. 2, the device further comprises a placing rod 38, a U-shaped rod 39, guide wheels 40 and a collecting frame 41, the placing rod 38 is fixedly connected to the left portion of the mounting plate 1 through bolts, the U-shaped rod 39 is welded to the top of the placing rod 38, the number of the U-shaped rods 39 is four, the four guide wheels 40 are rotatably arranged in the middle of each U-shaped rod 39, the guide wheels 40 are matched with the placing rod 38, and the collecting frame 41 is placed in the placing rod 38.

Before needing to carry out the punching press to the button, the staff will collect in frame 41 pushes away places pole 38, promote leading wheel 40 and rotate, when carrying out the punching press to the button, the waste material of button drops to collecting in the frame 41 in from the through-hole on first pivot 4, after finishing to all button punching presses, the staff will collect frame 41 from placing pole 38 in take out can, leading wheel 40 rotates, so, can carry out quick collection with the button waste material, prevent effectively that the button waste material from dropping to mounting panel 1 on.

On embodiment 1's basis, as shown in fig. 1 to 3, still including montant 42, it is circular according to piece 43, stopper 44 and fourth spring 45, all be equipped with montant 42 on the circular slab 10 slidingly, two of montant 42 are a set of, there are five groups, there are circular according to piece 43 through the screw rigid coupling between every montant 42 bottom of group, stopper 44 has all been welded on montant 42 upper portion, stopper 44 cooperates with circular slab 10, all be connected with fourth spring 45 between montant 42 and the circular slab 10.

When circular plate 10 moves down, drive montant 42 downstream, and then drive circularly according to piece 43 downstream, when circularly according to piece 43 and button contact, circular plate 10 carries out the downstream, at this moment, circularly according to piece 43 stop the downstream, fourth spring 45 is tensile, when stopper 44 and circular plate 10 contact, montant 42 stops the downstream, when circular plate 10 moves up, drive montant 42 upward movement, thereby it resets and the button breaks away from to drive circularly according to piece 43 upward movement, so, can fix the button when punching press the button, effectively prevent to be popped when the button punching press.

It should be understood that the above description is for exemplary purposes only and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention are intended to be included within the scope of the claims herein.

Claims

1. The utility model provides a four-hole formula button stamping device, characterized by, including:

the mounting plate (1) is used for mounting the whole device;

the stamping assembly is arranged on the mounting plate (1) and provides power for stamping;

the rotating assembly is arranged on the mounting plate (1) and rotates in a rotating mode;

the blanking placing assembly is installed on the installation plate (1) and is used for blanking in a sliding mode.

2. A four-hole button-punching device as defined in claim 1, wherein the punching member comprises:

the fixing plate (2) is arranged on the mounting plate (1);

the speed reducing motor (3) is arranged on the fixing plate (2);

the first rotating rod (4) is arranged on an output shaft of the speed reducing motor (3);

a push rod (5) mounted on the first rotating rod (4);

the special-shaped plate (6) is arranged on the mounting plate (1);

two fixing rods (7) are arranged on the special-shaped plate (6);

the sliding sleeve (8) is arranged on the fixed rod (7) in a sliding manner;

the first spring (9) is connected between the sliding sleeve (8) and the fixed rod (7);

a circular plate (10) mounted between the sliding sleeves (8);

a first wedge block (1001) mounted on the circular plate (10);

and at least two stamping rods (11) are arranged on the circular plate (10).

3. A four-hole button-punching apparatus as defined in claim 2, wherein said rotary member comprises:

a sector gear (12) mounted on the first rotating rod (4);

a slide rail (13) mounted on the fixed plate (2);

a sliding block (14) which is slidably mounted in the slide rail (13);

a second spring (15) connected between the slide block (14) and the slide rail (13);

the double-sided rack (16) is arranged on the sliding block (14), and the double-sided rack (16) is matched with the sector gear (12);

the second rotating rod (17) is arranged on the mounting plate (1);

an overrunning clutch (171) rotatably mounted on the second rotating rod (17);

and the full gear (172) is arranged on the overrunning clutch (171), and the full gear (172) is matched with the double-sided rack (16).

4. A four-hole button-punching apparatus as defined in claim 3, wherein the blanking-accommodating member comprises:

at least two rotating plates (18) are arranged on the second rotating rod (17), and through holes are formed in the rotating plates (18);

at least two placing blocks (19) are arranged on the rotating plate (18);

the L-shaped plate (20) is installed on the installation plate (1);

the feeding barrels (21) are arranged on the L-shaped plate (20), and at least two feeding barrels (21) are arranged;

a hopper (22) mounted on the lower charging barrel (21);

a first L-shaped rod (23) mounted on the L-shaped plate (20);

at least two second L-shaped rods (24), wherein the second L-shaped rods (24) are arranged on the first L-shaped rod (23) in a sliding manner;

and the circular baffle (25) is arranged on the second L-shaped rod (24), and the circular baffle (25) is matched with the blanking barrel (21).

5. A four-hole button punching device according to claim 4, characterized by further comprising:

a straight rod (26) which is slidably mounted on the fixing plate (2);

at least two ejector rods (27), wherein the ejector rods (27) are arranged on the straight rod (26);

and the handle (28) is arranged on the straight rod (26).

6. A four-hole button punching device according to claim 5, characterized by further comprising:

a first pulley (29) mounted on the first rotating rod (4);

a cylinder (30) rotatably mounted on the mounting plate (1);

the first contact rod (31) is arranged on the ejector rod (27), and the first contact rod (31) is connected with the cylinder (30) in a sliding manner;

a second pulley (32) mounted on the cylinder (30);

and a flat belt (33) installed between the second pulley (32) and the first pulley (29).

7. The punching device for four-hole buttons according to claim 6, further comprising:

a moving rod (34) mounted on the double-sided rack (16);

a second wedge block (35) mounted on the travel bar (34);

a cross plate (36) mounted between the second L-shaped bars (24);

the second contact rod (37) is arranged on the transverse plate (36), and the second contact rod (37) is matched with the second wedge-shaped block (35);

and a third spring (371) connected between the second L-shaped rod (24) and the first L-shaped rod (23).

8. The apparatus as claimed in claim 7, further comprising:

a placing rod (38) mounted on the mounting plate (1);

at least two U-shaped rods (39) are arranged on the placing rod (38);

at least two guide wheels (40), wherein the guide wheels (40) are rotatably arranged on the U-shaped rod (39), and the guide wheels (40) are matched with the placing rod (38);

a collecting frame (41) placed in the placing rod (38).

9. The apparatus as claimed in claim 8, further comprising:

at least two vertical rods (42), wherein the vertical rods (42) are arranged on the circular plate (10) in a sliding manner;

a circular pressing block (43) arranged between the vertical rods (42);

the limiting block (44) is arranged on the vertical rod (42), and the limiting block (44) is matched with the circular plate (10);

and a fourth spring (45) connected between the vertical rod (42) and the circular plate (10).