Equipment suitable for being embedded on clothes in extruding or ironing mode

Abstract

The utility model provides equipment suitable for being squeezed or ironed and nested on clothes. The equipment suitable for being squeezed or ironed and nested on the clothes comprises an air heater body, a driving device and a belt replacing device. The driving device comprises a mounting plate, a driving motor, a driving wheel, a rotating shaft, a driven wheel and a belt, the driven wheel is located on one side of the driving wheel, and the hot air gun is connected to the rotating shaft; the tape replacing device is fixedly connected to the top of the air heater body and comprises a storage bin used for storing insertion strip winding tapes. According to the equipment suitable for being extruded or ironed to be nested on the clothes, the driving device is arranged on the air heater body, in the working process, the driving motor drives the driving wheel to rotate so as to drive the driven wheel to rotate, then the heat gun is driven to swing, the swing amplitude of the heat gun can be stable through the device, and then positioning is accurate; in addition, the band replacing device is arranged on the air heater body, so that the insertion band coil is convenient to replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of clothing equipment, and in particular relates to a device suitable for squeezing or ironing and embedding on clothing. Background Art

[0002] The welt is the skeleton of a piece of clothing. It is a garment lining embedded inside the hem during sewing in order to ensure the stiffness, flatness and strength of the hem. Generally, a hot air seam sealing machine is used to press the welt on the hem of the garment. When sewing, the welt is placed on the hem and placed between the upper and lower rubber wheels of the sealing machine. The closed rotation of the two rubber wheels drives the hem and the welt to move. During the movement, the heating tube heats up, and then an air pump blows hot air onto the welt to make it reach the melting point, so that the welt is combined with the fabric. Then, the hem is folded so that the welt is at the bottom and the fabric is at the top. Then, an iron is used to press the fabric, so that the fabric and the welt are tightly combined.

[0003] The existing heat-sealed seam sealing machine generally includes a storage bin and a feeding trough tube arranged on a bracket; when used for the first time, the control component is used to slide the limit rod so that the hot-melt tape roll can pass through the limit rod. When the limit rod corresponds to the center of the hot-melt tape roll, the limit rod is inserted into the center of the hot-melt tape roll, and the hot-melt tape is pulled out of the tape feeding slot to use the hot-melt tape; after a roll of hot-melt tape is used up, the limit rod is slid to take out the roll core, and the adjacent hot-melt tape roll continues to roll into the limit rod position under the action of gravity, and the above operation is repeated to change the roll. However, the hot air gun on the sealing machine is driven by a cylinder to swing back and forth, and due to the poor air pressure stability of the cylinder, when driving the hot air gun to swing, it is easy to cause the swing amplitude of the hot air gun to be too large or too small, resulting in inaccurate positioning, and thus it cannot be used for fabrics that require fine processing. Utility Model Content

[0004] The embodiment of the utility model provides a device suitable for squeezing or ironing a heat gun embedded in a garment, aiming to solve the technical problem of inaccurate positioning caused by too large or too small swing amplitude of a heat gun.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a device suitable for squeezing or ironing the nesting on the clothing, comprising:

[0006] The hot air blower body comprises a lower pressing wheel, an upper pressing wheel arranged above the lower pressing wheel, and a hot air gun arranged on one side of the upper pressing wheel, wherein a suture channel is formed between the lower pressing wheel and the upper pressing wheel, and an outlet end of the hot air gun faces a discharge side of the suture channel;

[0007] The driving device comprises a mounting plate fixedly connected to the main body of the hot air blower, a driving motor fixedly connected to the mounting plate, a driving wheel fixedly connected to the driving shaft of the driving motor, a rotating shaft rotatably connected to the mounting plate, a driven wheel fixedly connected to one end of the rotating shaft, and a belt drivingly connected to the driving wheel and the driven wheel, wherein the driven wheel is located at one side of the driving wheel, and the hot air gun is connected to the other end of the rotating shaft;

[0008] A belt changing device is fixedly connected to the top of the hot air blower body, the belt changing device comprises a storage bin for storing the fillet strip roll, and the belt changing device is used to supply the fillet strip to the sewing channel.

[0009] In a possible implementation, the hot air gun includes:

[0010] A mounting seat, fixedly connected to an end of the rotating shaft away from the driven wheel;

[0011] A cylinder body, detachably connected to the mounting seat;

[0012] A gun body, detachably connected to the mounting seat;

[0013] An air outlet pipe is fixedly connected to the bottom of the gun body and communicated with the interior of the gun body, and an air outlet end of the air outlet pipe faces the material outlet side of the suturing channel.

[0014] In a possible implementation, the belt changing device further includes:

[0015] A feeding bin is fixedly connected to the top of the hot air blower body, and is provided with a feeding trough communicated with the storage bin and a plug plate movably connected to the feeding trough;

[0016] A rotating rod, rotatably connected to the feeding bin, and the rotating rod is used for winding the fillet strip;

[0017] The driving assembly is arranged outside the feeding bin and is used to drive the rotating rod and the inserting plate to move respectively.

[0018] In a possible implementation, a roll-in opening is provided on a side of the material storage bin away from the material feeding bin, and the bottom of the material storage bin is inclined downward in a direction gradually away from the roll-in opening.

[0019] In a possible implementation, a slide groove is provided on the side wall of the feeding bin, and the insert plate slides in cooperation with the slide groove.

[0020] In a possible implementation, the driving component includes:

[0021] A driving wheel, rotatably connected to the outer wall of the feeding bin;

[0022] A connecting rod, fixedly connected to the driving shaft of the driving wheel and perpendicular to the axial direction of the driving wheel;

[0023] One end of the support rod is rotatably connected to the side of the connection away from the driving shaft, and the other end is hinged to the plug plate. The support rod is perpendicular to the hinge axis of the plug plate.

[0024] In a possible implementation, the driving component further includes:

[0025] A bracket, fixedly connected to the feeding bin;

[0026] The rotating motor is fixedly connected to the bracket, and the output shaft of the rotating motor is fixedly connected to the driving wheel.

[0027] In a possible implementation, a rotation hole for the rotation rod to pass through is further provided on the side wall of the feeding bin, and the driving assembly further includes:

[0028] A bearing, located in the rotating hole and with its outer ring matched with the feeding bin;

[0029] A sleeve, fixedly connected to a side of the rotating rod extending out of the feeding bin;

[0030] The rotating part is fixedly connected to a side of the sleeve away from the bearing.

[0031] In one possible implementation, at least two limit grooves are provided on the outer circumference of the bearing, and the limit grooves are arranged at intervals along the circumference of the bearing. The drive assembly also includes a plurality of limit rods corresponding to the limit grooves one by one, and one end of the limit rod extends into the limit groove, and the other end is inclined along an axial direction gradually away from the bearing and abuts against the inner wall of the rotating hole.

[0032] In a possible implementation, the drive assembly further includes a plurality of limit springs, wherein the limit springs are connected between the bearing and the free end of the limit rod, and the limit springs have a preload force that causes the free end of the limit rod to abut against the side wall of the rotating hole.

[0033] The utility model provides a device suitable for squeezing or ironing embedded clothes on clothing. Compared with the prior art, a driving device is arranged on the main body of the hot air blower, and the driving device is composed of a driving motor, a driving wheel, a driven wheel and a belt. The hot air gun is connected to the rotating shaft of the driven wheel. When working, the driving motor drives the driving wheel to rotate, thereby driving the driven wheel to rotate, and then driving the hot air gun to swing. The device can make the swing amplitude of the hot air gun more stable, thereby making the positioning more accurate. In addition, a belt changing device is arranged on the main body of the hot air blower, which is convenient for replacing the fillet tape roll and for supplying the fillet to the sewing channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A front view of a device suitable for squeezing or ironing a nested garment provided by an embodiment of the utility model;

[0035] Figure 2 A top view of a device suitable for squeezing or ironing a nested garment provided by an embodiment of the utility model (the upper pressing wheel and the lower pressing wheel are omitted);

[0036] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0037] Figure 4 A side view of a belt changing device provided by an embodiment of the utility model;

[0038] Figure 5 A front view of a material storage bin provided in an embodiment of the utility model.

[0039] Description of reference numerals:

[0040] 10-hot air machine body; 11-lower pressure wheel; 12-upper pressure wheel; 13-hot air gun; 131-mounting seat; 132-gun body; 133-air outlet pipe;

[0041] 20-driving device; 21-mounting plate; 22-driving motor; 23-driving wheel; 24-driven wheel; 25-belt; 26-rotating shaft;

[0042] 30-belt changing device; 31-storage bin; 311-reel inlet; 32-feeding bin; 321-feeding trough; 322-insertion plate; 323-slideway; 324-rotation hole; 33-rotation rod; 34-driving assembly; 341-driving wheel; 342-connecting rod; 343-support rod; 344-bracket; 345-rotating motor; 346-bearing; 347-sleeve; 348-rotating part; 349-limiting groove; 350-limiting rod; 351-limiting spring. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] Please also read Figures 1 to 5, the utility model is described as a device suitable for squeezing or ironing and nesting on clothing. The device suitable for squeezing or ironing and nesting on clothing includes a hot air blower body 10, a driving device 20 and a belt changing device 30; the hot air blower body 10 includes a lower pressing wheel 11, an upper pressing wheel 12 arranged above the lower pressing wheel 11, and a hot air gun 13 arranged on one side of the upper pressing wheel 12, a sewing channel is formed between the lower pressing wheel 11 and the upper pressing wheel 12, and the outlet end of the hot air gun 13 faces the discharge side of the sewing channel; the driving device 20 includes a mounting plate 21 fixedly connected to the hot air blower body 10, and a driving motor 2 fixedly connected to the mounting plate 21. 2. A driving wheel 23 fixedly connected to the driving shaft of the driving motor 22, a rotating shaft 26 rotatably connected to the mounting plate 21, a driven wheel 24 fixedly connected to one end of the rotating shaft 26, and a belt 25 drivingly connected to the driving wheel 23 and the driven wheel 24, the driven wheel 24 is located on one side of the driving wheel 23, and the hot air gun 13 is connected to the other end of the rotating shaft 26; a belt changing device 30 is fixedly connected to the top of the hot air blower body 10, and the belt changing device 30 includes a storage bin 31 for storing the fillet tape, and the belt changing device 30 is used to supply the fillet to the sewing channel.

[0045] The utility model provides a device suitable for squeezing or ironing embedded clothes on clothing. Compared with the prior art, a driving device 20 is arranged on the hot air blower body 10, and the driving device 20 is composed of a driving motor 22, a driving wheel 23, a driven wheel 24 and a belt 25. The hot air gun 13 is connected to the rotating shaft 26 of the driven wheel 24. When working, the driving motor 22 drives the driving wheel 23 to rotate, thereby driving the driven wheel 24 to rotate, and then driving the hot air gun 13 to swing. The device can make the swing amplitude of the hot air gun 13 more stable, thereby making the positioning accurate. In addition, a belt changing device 30 is arranged on the hot air blower body to facilitate the replacement of the fillet tape roll and the supply of fillet to the sewing channel.

[0046] In some embodiments, a modified embodiment of the above-mentioned device suitable for squeezing or ironing the nesting on the garment can be adopted as follows Figure 1 , Figure 2 See the structure shown. Figure 1 , Figure 2The hot air gun 13 comprises a mounting seat 131, a gun body 132 and an air outlet pipe 133; the mounting seat 131 is fixedly connected to the end of the rotating shaft 26 away from the driven wheel 24; the gun body 132 is detachably connected to the mounting seat 131; the air outlet pipe 133 is fixedly connected to the bottom of the gun body 132 and communicated with the inside of the gun body 132, and the air outlet end of the air outlet pipe 133 faces the material outlet side of the sewing channel. By fixing the mounting seat 131 to the rotating shaft 26, the gun body 132 can be driven to swing, and the gun body 132 and the mounting seat 131 are detachably connected by bolts, etc., which is convenient for the maintenance and disassembly of the gun body 132; and the air outlet pipe 133 is connected at the bottom of the gun body 132, so that the ejected hot air can be aimed at the sewing channel, that is, at the sewn fabric, which can improve the heating and sewing efficiency of the fabric and make the heating and sewing effect better.

[0047] In some embodiments, a modified embodiment of the above-mentioned device suitable for squeezing or ironing the nesting on the garment can be adopted as follows Figure 1 , Figure 2 See the structure shown. Figure 1 , Figure 2 The belt changing device 30 also includes a feeding bin 32, a rotating rod 33 and a driving assembly 34; the feeding bin 32 is fixedly connected to the top of the hot air blower body 10, and the feeding bin 32 is provided with a feeding trough 321 connected to the storage bin 31 and a plug plate 322 movably connected to the feeding trough 321; the rotating rod 33 is rotatably connected to the feeding bin 32, and the rotating rod 33 is used for winding the fillet tape; the driving assembly 34 is arranged outside the feeding bin 32, and is used to drive the rotating rod 33 and the plug plate 322 to move respectively. When it is necessary to change the tape, the plug plate 322 is opened by the driving component 34, so that the fillet tape roll in the storage bin 31 moves into the feeding bin 32. At the same time, the driving component 34 drives the rotating rod 33 to move in the direction of the driving component 34, so that the distance between the end of the rotating rod 33 and the inner wall of the feeding bin 32 is enough for the fillet tape roll to pass. After the fillet tape roll moves to the predetermined position in the feeding bin 32, the rotating rod 33 is driven to move in the direction away from the driving component 34, and after moving to the original position, the fillet tape roll can be directly inserted.

[0048] Specifically, a waste hole is provided at the bottom of the feeding bin 32 on the side away from the storage bin 31 for discharging the used fillet tape roll. When in use, after the rotating rod 33 moves toward the driving assembly 34, the used fillet tape roll is discharged through the waste hole, and then the fillet tape roll in the storage bin 31 moves into the feeding bin 32.

[0049] In some embodiments, a modified embodiment of the above-mentioned device suitable for squeezing or ironing the nesting on the garment can be adopted as follows Figure 4 See the structure shown. Figure 4A roll inlet 311 is provided on one side of the storage bin 31, and the bottom of the storage bin 31 is inclined downward in a direction gradually away from the roll inlet 311. The roll inlet 311 is provided on the storage bin 31, so that the strip roll can be added into the storage bin 31 through the roll inlet 311; the bottom of the storage bin 31 is inclined so that the strip roll can slide into the feeding bin 32.

[0050] In some embodiments, a modified embodiment of the above-mentioned device suitable for squeezing or ironing the nesting on the garment can be adopted as follows Figure 4 , Figure 5 See the structure shown. Figure 4 , Figure 5 The side wall of the feeding bin 32 is provided with a slide groove 323, and the plug plate 322 slides in cooperation with the slide groove 323. The slide groove 323 is provided on the side wall of the feeding bin 32, so that the plug plate 322 can slide therein; in actual use, the plug plate 322 is connected to the driving assembly 34 through a hinge shaft, and when the driving assembly 34 is started, the hinge shaft is driven to move up and down in the slide groove 323, thereby driving the plug plate 322 to move up and down, and realizing the opening and closing of the plug plate 322.

[0051] As a modified embodiment, a groove for sliding the insert plate 322 is provided on the top of the feeding bin 32, and the groove extends along the length direction of the feeding bin 32 (taking the main view as an example), and the driving assembly 34 is connected to one side of the insert plate 322 passing through the groove.

[0052] In some embodiments, a modified embodiment of the above-mentioned device suitable for squeezing or ironing the nesting on the garment can be adopted as follows Figure 5 See the structure shown. Figure 5 The driving assembly 34 includes a driving wheel 341, a connecting rod 342 and a supporting rod 343; the driving wheel 341 is rotatably connected to the outer wall of the feeding bin 32; the connecting rod 342 is fixed to the driving shaft of the driving wheel 341 and is perpendicular to the axial direction of the driving wheel 341; one end of the supporting rod 343 is rotatably connected to the side away from the driving shaft, and the other end is hinged to the plug plate 322, and the supporting rod 343 is perpendicular to the hinge axis of the plug plate 322. When the driving assembly 34 drives the plug plate 322 to open and close, the driving wheel 341 rotates, and its rotation drives the rotation of the connecting rod 342. Since the connecting rod 342 is rotatably connected to the supporting rod 343, the rotation of the connecting rod 342 can drive the supporting rod 343 to move up and down, thereby driving the plug plate 322 to move up and down to achieve its opening and closing.

[0053] In some embodiments, a modified embodiment of the above-mentioned device suitable for squeezing or ironing the nesting on the garment can be adopted as follows Figure 2 See the structure shown. Figure 2The driving assembly 34 also includes a bracket 344 and a rotating motor 345; the bracket 344 is fixedly connected to the feeding bin 32; the rotating motor 345 is fixedly connected to the bracket 344, and the output shaft of the rotating motor 345 is fixedly connected to the driving wheel 341. By setting the rotating motor 345, the automatic opening and closing of the plug board 322 can be realized. When working, the rotating motor 345 is turned on, and the rotating motor 345 drives the driving wheel 341 to rotate, thereby driving the plug board 322 to move up and down; and the rotating motor 345 is installed on the bracket 344, which is not only convenient for the installation of the rotating motor 345, but also can protect the driving wheel 341.

[0054] In some embodiments, a modified embodiment of the above-mentioned device suitable for squeezing or ironing the nesting on the garment can be adopted as follows Figure 2 , Figure 3 See the structure shown. Figure 2 , Figure 3 The side wall of the feeding bin 32 is also provided with a rotating hole 324 for the rotating rod 33 to pass through, and the driving assembly 34 also includes a bearing 346, a sleeve 347 and a rotating part 348; the bearing 346 is in the rotating hole 324 and the outer ring is matched with the feeding bin 32; the sleeve 347 is fixed to the side of the rotating rod 33 extending out of the feeding bin 32; the rotating part 348 is fixed to the side of the sleeve 347 away from the bearing 346. The rotating hole 324 is provided on the side wall of the feeding bin 32, and the rotating rod 33 is slidably connected to the rotating hole 324 through the bearing 346 to facilitate the sliding of the rotating rod 33; when replacing the strip roll, the rotating part 348 is held by hand, and the rotating rod 33 is driven to move toward the driving assembly 34 through the sleeve 347. After the replacement is completed, the rotating rod 33 is slid in the opposite direction to make it stuck in the rotating hole 324, and then when sewing the cloth, the rotating rod 33 can be rotated through the bearing 346.

[0055] In some embodiments, a modified embodiment of the above-mentioned device suitable for squeezing or ironing the nesting on the garment can be adopted as follows Figure 2 , Figure 3 See the structure shown. Figure 2 , Figure 3At least two limiting grooves 349 are provided on the outer circumference of the bearing 346, and each limiting groove 349 is arranged at intervals along the circumference of the bearing 346. The driving assembly 34 also includes a plurality of limiting rods 350 corresponding to each limiting groove 349. One end of the limiting rod 350 extends into the limiting groove 349, and the other end is inclined along the axial direction gradually away from the bearing 346 and abuts against the inner wall of the rotating hole 324. The limiting rod 350 can be provided to limit and fix the bearing 346. When in use, since the limiting rod 350 is inclined upward along the axial direction of the bearing 346 in the limiting groove 349, when the bearing 346 is inserted into the rotating hole 324, the inner wall of the rotating hole 324 will give a downward pressure to the limiting rod 350, so that the limiting rod 350 moves downward, thereby limiting the bearing 346.

[0056] In some embodiments, a modified embodiment of the above-mentioned device suitable for squeezing or ironing the nesting on the garment can be adopted as follows Figure 2 , Figure 3 See the structure shown. Figure 2 , Figure 3 The driving assembly 34 further includes a plurality of limit springs 351, which are connected between the bearing 346 and the free end of the limit rod 350. The limit spring 351 has a preload force that causes the free end of the limit rod 350 to abut against the side wall of the rotating hole 324. The bearing 346 is further fixed by providing the limit spring 351. When the rotating hole 324 applies a downward pressure to the limit rod 350, the limit rod 350 drives the limit spring 351 to be compressed downward together. At this time, the limit spring 351 applies an upward elastic force to the limit rod 350, causing the limit rod 350 to abut against the inner wall of the rotating hole 324, so that the clamping of the bearing 346 is more stable.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device suitable for pressing or ironing a nest onto a garment, characterized in that: include: The hot air blower body comprises a lower pressing wheel, an upper pressing wheel arranged above the lower pressing wheel, and a hot air gun arranged on one side of the upper pressing wheel, wherein a suture channel is formed between the lower pressing wheel and the upper pressing wheel, and an outlet end of the hot air gun faces a discharge side of the suture channel; The driving device comprises a mounting plate fixedly connected to the main body of the hot air blower, a driving motor fixedly connected to the mounting plate, a driving wheel fixedly connected to the driving shaft of the driving motor, a rotating shaft rotatably connected to the mounting plate, a driven wheel fixedly connected to one end of the rotating shaft, and a belt drivingly connected to the driving wheel and the driven wheel, wherein the driven wheel is located at one side of the driving wheel, and the hot air gun is connected to the other end of the rotating shaft; A belt changing device is fixedly connected to the top of the hot air blower body, the belt changing device comprises a storage bin for storing the fillet strip roll, and the belt changing device is used to supply the fillet strip to the sewing channel.

2. The device for pressing or ironing the nesting onto clothing according to claim 1, characterized in that: The hot air gun comprises: A mounting seat, fixedly connected to an end of the rotating shaft away from the driven wheel; A gun body, detachably connected to the mounting seat; An air outlet pipe is fixedly connected to the bottom of the gun body and communicated with the interior of the gun body, and an air outlet end of the air outlet pipe faces the material outlet side of the suturing channel.

3. The device for pressing or ironing the nesting onto clothing according to claim 2, characterized in that: The belt changing device also includes: A feeding bin is fixedly connected to the top of the hot air blower body, and is provided with a feeding trough communicated with the storage bin and a plug plate movably connected to the feeding trough; A rotating rod, rotatably connected to the feeding bin, and the rotating rod is used for winding the fillet strip; The driving assembly is arranged outside the feeding bin and is used to drive the rotating rod and the inserting plate to move respectively.

4. The device for pressing or ironing the nesting onto the garment according to claim 3, characterized in that: A roll-in opening is provided on a side of the material storage bin away from the material feeding bin, and the bottom of the material storage bin is inclined downward in a direction gradually away from the roll-in opening.

5. The device for pressing or ironing the nesting onto the garment according to claim 4, characterized in that: A slide groove is provided on the side wall of the feeding bin, and the insert plate slides in cooperation with the slide groove.

6. The device for pressing or ironing the nesting onto the garment according to claim 5, characterized in that: The drive assembly comprises: A driving wheel, rotatably connected to the outer wall of the feeding bin; A connecting rod, fixedly connected to the driving shaft of the driving wheel and perpendicular to the axial direction of the driving wheel; One end of the support rod is rotatably connected to the side of the connection away from the driving shaft, and the other end is hinged to the plug plate. The support rod is perpendicular to the hinge axis of the plug plate.

7. The device for pressing or ironing the nest onto a garment according to claim 6, characterized in that: The drive assembly also includes: A bracket, fixedly connected to the feeding bin; The rotating motor is fixedly connected to the bracket, and the output shaft of the rotating motor is fixedly connected to the driving wheel.

8. The device for pressing or ironing the nesting onto the garment according to claim 6, characterized in that: A rotating hole for the rotating rod to pass through is also provided on the side wall of the feeding bin, and the driving assembly further comprises: A bearing, located in the rotating hole and with its outer ring matched with the feeding bin; A sleeve, fixedly connected to a side of the rotating rod extending out of the feeding bin; The rotating part is fixedly connected to a side of the sleeve away from the bearing.

9. The device for pressing or ironing the nest onto a garment according to claim 8, characterized in that: At least two limit grooves are provided on the outer circumference of the bearing, and the limit grooves are arranged at intervals along the circumference of the bearing. The drive assembly also includes a plurality of limit rods corresponding to the limit grooves one by one, one end of the limit rod extends into the limit groove, and the other end is inclined along the axial direction gradually away from the bearing and abuts against the inner wall of the rotating hole.

10. The device for pressing or ironing the nest onto a garment according to claim 9, characterized in that: The driving assembly further comprises a plurality of limit springs, wherein the limit springs are connected between the bearing and the free end of the limit rod, and the limit springs have a pre-tightening force that causes the free end of the limit rod to abut against the side wall of the rotating hole.

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