Feeding structure of button sewing machine

Abstract

The utility model relates to a feeding structure of a button sewing machine, which belongs to the technical field of button sewing machines, and comprises a base, an adjustable button guide table, a lifting rotary feeding arm, a rotary button pressing motor and an auxiliary pressing device, the adjustable button guide table is arranged on the base, an adjustable button guide channel is arranged on the adjustable button guide table, and the lifting rotary feeding arm is arranged on the lifting rotary feeding arm. The auxiliary pressing device is located above the adjustable guide buckle channels, each adjustable guide buckle channel is provided with a feeding end and a discharging end, the lifting rotary feeding arm is rotationally arranged on one side of each adjustable guide buckle channel, and a buckle claw of the lifting rotary feeding arm is located below the discharging ends of the adjustable guide buckle channels. The rotary button pressing motor can screw buttons located at the discharging end of the adjustable button guiding channel into button claws of the lifting rotary feeding arm, and the buttons are conveyed to sewing equipment for sewing through the lifting rotary feeding arm. The feeding structure of the button sewing machine can feed buttons to sewing equipment according to specified positions.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of button sewing machine, especially point to a button sewing machine's feeding structure. BACKGROUND

[0002] At present, button sewing machine is the common equipment of clothing, shoes and hats, and the button sewing channel on the existing button sewing machine is basically fixed, and only one kind or similar button can be conveyed and processed. When the button is replaced, the button channel also needs to be replaced. If there are many types of buttons, multiple button channels matched with the buttons need to be prepared, and the replacement of the button channel greatly reduces the production efficiency of the button sewing machine. It is a large expense to purchase or manufacture multiple button channels, which is a large expenditure for small and medium-sized enterprises.

[0003] The domestic database discloses an application number 201920533665.7, and the utility model discloses a kind of adjustable feeding channel for button sewing machine, it includes feeding plate way, the front and rear sides of the feeding plate way are respectively provided with front limit plate and rear limit plate that can move forward and backward, the upper of the feeding plate way is provided with adjustable height adjusting plate, the front limit plate, rear limit plate and feeding plate way three cooperation form workpiece channel, the adjusting plate is located above workpiece channel, the side of the adjusting plate is provided with blowing device, above-mentioned structure can avoid purchasing multiple button channels, but when actually using, the width of workpiece channel is relatively troublesome to adjust, and workpiece channel needs to be gradually adjusted according to the size of button;And the above-mentioned structure cannot send button with hole site to sewing equipment according to proper angle and connect with clothes by sewing. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a button sewing machine's feeding structure with reasonable structure, convenient button channel adjustment and the button can be sent to sewing equipment according to specified position.

[0005] The utility model is realized by the following way:

[0006] A kind of button sewing machine's feeding structure, including base, adjustable button guide table, lifting rotary feeding arm, button spin down pressure motor and auxiliary down pressure device, the adjustable button guide table is set on base, and adjustable button guide channel is provided on the adjustable button guide table, the auxiliary down pressure device is located above adjustable button guide channel, the adjustable button guide channel has inlet end and discharge end, the lifting rotary feeding arm is rotatably arranged at one side of adjustable button guide channel, and the claw of lifting rotary feeding arm is located below discharge end of adjustable button guide channel, the button spin down pressure motor can spin the button in discharge end of adjustable button guide channel into the claw of lifting rotary feeding arm, and the button is sent to sewing equipment for sewing by lifting rotary feeding arm.

[0007] In the feeding structure of the above-mentioned button-attaching machine, the adjustable button guide table includes a button guide table and a left stop and a right stop that are always close to each other and move synchronously. A button-attaching measuring device is provided on one side of the left stop and the right stop, and the button-attaching measuring device can control the distance between the left stop and the right stop.

[0008] In the feeding structure of the above-mentioned button-attaching machine, guide columns are respectively provided on the left and right stop seats. The guide columns on the left and right stop seats are staggered, and the left and right stop seats are slidably arranged on both sides of the button-attaching platform through the guide columns. The button-attaching measuring device includes an outer button plate and an inner button plate. The outer button plate and the inner button plate are respectively connected to the left and right stop seats, and there is a receiving gap between the outer button plate and the inner button plate. The width of the receiving gap is smaller than the width of the adjustable button-attaching channel. A hand-operated plate is also provided on the outer button plate and the inner button plate.

[0009] In the feeding structure of the above-mentioned button-attaching machine, a synchronization device and a pulling device are provided between the left and right stop seats. The synchronization device includes two racks and a gear. The gear is rotatably positioned below the guide table. The two racks are fixed below the left and right stop seats respectively, and the two racks mesh with the gear. The pulling device includes two connecting columns and a tension spring. There are two connecting columns, which are fixed on the left and right stop seats respectively. The two ends of the tension spring are connected to the connecting columns respectively.

[0010] In the feeding structure of the above-mentioned button-attaching machine, a stop bar is included. The stop bar is located at the discharge end of the adjustable guide channel, and the stop bar is slidably mounted on one side of the base via a sliding bracket and is located away from the button-attaching measuring device. A drive bearing is provided on the sliding bracket, and a drive plate that cooperates with the drive bearing is provided on the left stop seat. A tension spring is provided between the sliding bracket and the base, and the drive bearing is always abutted against the drive plate by the tension spring.

[0011] In the feeding structure of the above-mentioned button-attaching machine, the lifting and rotating feeding arm includes a lifting bracket, a rotating arm, a lifting cylinder, a rotating seat, and a pushing cylinder. The rotating arm is rotatably mounted on the lifting bracket via a rotating shaft, and the lifting bracket is connected to the base via a slider rail assembly. The lifting cylinder is fixed on the base, and its telescopic rod is connected to the lifting bracket. One end of the rotating shaft extending out of the lifting bracket is connected to the rotating seat. The pushing cylinder is fixed on the lifting bracket, and its telescopic rod is movably connected to the rotating seat.

[0012] In the feeding structure of the above-mentioned button-attaching machine, the button-pressing motor includes a motor and a button-attaching head, and the button-attaching head is fixedly connected to the end of the rotating shaft of the motor.

[0013] In the feeding structure of the button sewing machine, the lifting support is provided with a rotary arm limiting plate and a rotary seat limiting plate, and the rotary arm limiting plate and the rotary seat limiting plate are both provided with adjustable buffer heads.

[0014] In the feeding structure of the button sewing machine, the auxiliary pressing device comprises a limiting strip and an adjustable support, the limiting strip is arranged on the adjustable support and located in the adjustable button guiding channel, the limiting strip is provided with an air inlet hole and a plurality of button blowing holes, the air inlet hole and the button blowing holes are communicated, and the button blowing holes are arranged on the lower side of the limiting strip in an inclined manner.

[0015] In the feeding structure of the button sewing machine, the bottom is provided with left and right fine adjustment devices, the left and right fine adjustment devices comprise a fixed seat and a movable seat, the fixed seat is fixed on the rack of the button sewing machine, the movable seat is connected with the bottom, the fixed seat and the movable seat are connected through a slide rail and a slide block assembly, and the fixed seat and the movable seat are provided with a tensioning device and an adjusting device, and the adjusting device can control the position of the movable seat on the fixed seat.

[0016] The utility model discloses compared with prior art highlights and beneficial technical effect is:

[0017] The utility model discloses be set up between button sewing machine vibration disc and sewing equipment, be used for conveying the button of vibration disc through the adjustable button guiding channel of adjustable button guiding platform and the lifting rotary feeding arm to send to sewing equipment and clothes sewing together, and the button is sent simple, and the width adjustment of button guiding channel is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is one of the structural diagrams of the utility model.

[0019] Figure 2 It is the second structural diagram of the utility model.

[0020] Figure 3 It is the third structural diagram of the utility model.

[0021] Figure 4 It is the fourth structural diagram of the utility model.

[0022] Figure 5 It is one of the structure schematic diagram of the utility model's synchronous device and pull near device.

[0023] Figure 6 It is the second structure schematic diagram of the utility model's synchronous device and pull near device.

[0024] Figure 7 It is the adjustable button guiding platform and button sewing measuring device structure schematic diagram of the utility model.

[0025] Figure 8 is the sectional view of the left-right fine adjustment device of the utility model.

[0026] Figure 9 is the internal structure schematic view of the left-right fine adjustment device of the utility model.

[0027] Figure 10 is the exploded view of the adjustment device of the utility model.

[0028] Figure 11 is the structure schematic view of the lifting rotary feeding arm of the utility model.

[0029] Figure 12 is the structure schematic view of the lifting rotary feeding arm of the utility model.

[0030] Figure 13 is the structure schematic view of the limiting strip of the utility model.

[0031] 1-base; 2-adjustable buckle guiding table; 3-lifting rotary feeding arm; 4-buckle pressing motor;

[0032] 5-assistant pressing device; 6-synchronous device; 7-pulling device; 8-buckle blocking strip; 11-left-right fine adjustment device; 20-adjustable buckle guiding channel; 21-buckle guiding table; 22-left material blocking seat; 23-right material blocking seat;

[0033] 24-buckle measuring device; 25-guiding column; 31-lifting support; 32-rotary arm; 33-lifting cylinder; 34-rotary seat; 35-pushing cylinder; 36-rotating shaft; 37-adjustable buffer head; 41-motor; 42-buckle rubber head; 51-limiting strip; 52-adjustable support; 53-buckle blowing hole; 54-air inlet hole; 61-rack; 62-gear; 71-connecting column; 72-tension spring one; 81-sliding support; 82-driving bearing; 83-driving plate; 84-tension spring; 111-fixed seat; 112-moving seat; 113-tensioning device; 114-adjustment device; 241-outer buckle plate; 242-inner buckle plate; 243-containing gap; 244-hand bending plate; 1121-baffle; 1122-through hole;

[0034] 1131-connecting column one; 1132-connecting column two; 1133-tension spring two; 1141-fixed block;

[0035] 1142-adjusting bolt; 1143-locking nut; 1144-nut one. DETAILED DESCRIPTION

[0036] The utility model will be further described in conjunction with the specific embodiment of the accompanying drawings:

[0037] As Figures 1-13The buckle feeding structure of a button sewing machine comprises a base 1, an adjustable buckle guiding table 2, a lifting rotary feeding arm 3, a rotary buckle pressing motor 4 and an auxiliary pressing device 5. The adjustable buckle guiding table 2 is arranged on the base 1, and the adjustable buckle guiding table 2 is provided with adjustable buckle guiding channels 20. The auxiliary pressing device 5 is located above the adjustable buckle guiding channels 20. The adjustable buckle guiding channels 20 are each provided with an inlet end and an outlet end. The lifting rotary feeding arm 3 is rotatably arranged on one side of the adjustable buckle guiding channels 20, and the buckle claw of the lifting rotary feeding arm 3 is located below the outlet end of the adjustable buckle guiding channels 20. The rotary buckle pressing motor 4 can rotate the buckle at the outlet end of the adjustable buckle guiding channels 20 to the buckle claw of the lifting rotary feeding arm 3, and the buckle is sent to the sewing equipment for sewing by the lifting rotary feeding arm 3. Specifically, the buckle claw is provided with two or four positioning columns, the positioning columns are used for extending into the connecting holes of the button, and the button is sent to the outlet end of the adjustable buckle guiding channels by the auxiliary pressing device. The button is rotated by the rotary buckle pressing motor to be clamped into the buckle claw, so that the lifting rotary feeding arm can send the button to the sewing equipment to be connected with the clothes.

[0038] In the feeding structure of the button sewing machine, the adjustable button guiding table 2 comprises a button guiding table 21 and left and right blocking material seats 22 and 23 which are always close to each other and move synchronously, one side of the left and right blocking material seats 22 and 23 is provided with a button measuring device 24, the button measuring device 24 can control the distance between the left and right blocking material seats 22 and 23, the left and right blocking material seats 22 and 23 are respectively provided with guiding columns 25, the guiding columns 25 on the left and right blocking material seats 22 and 23 are staggered, and the left and right blocking material seats 22 and 23 are slidably arranged on both sides of the button guiding table 21 through the guiding columns 25, specifically, the left and right blocking material seats are respectively provided with guiding columns, and the left and right blocking material seats are also provided with guiding holes for the guiding columns on the opposite blocking material seat to be inserted, and the button guiding table is also provided with guiding holes; the button measuring device 24 comprises an outer side button plate 241 and an inner side button plate 242, the outer side button plate 241 and the inner side button plate 242 are respectively connected with the left and right blocking material seats 22 and 23, and a containing gap 243 is left between the outer side button plate 241 and the inner side button plate 242, the width of the containing gap 243 is smaller than the width of the adjustable button guiding channel 20, the outer side button plate 241 and the inner side button plate 242 are also provided with hand bending plates 244, specifically, this is to facilitate the user to make the left and right blocking material seats away from each other by pressing the hand bending plates, and to ensure that the channel between the left and right blocking material seats is consistent with the size of the button by placing the button into the containing gap; the left and right blocking material seats 22 and 23 are provided with a synchronous device 6 and a pulling device 7, the synchronous device 6 comprises two racks 61 and a gear 62, the gear 62 is rotatably arranged below the button guiding table 21, the two racks 61 are respectively fixed below the left and right blocking material seats 22 and 23, and the two racks 61 are engaged with the gear 62; the pulling device 7 comprises a connecting column 71 and a tension spring 72, the connecting column 71 is two, and is respectively fixed on the left and right blocking material seats 22 and 23, the two ends of the tension spring 72 are respectively connected with the connecting column 71, specifically, the left and right blocking material seats can be always close to each other through the tension spring, and the left and right blocking material seats can move synchronously through the rack and the gear.

[0039] In the feeding structure of the button sewing machine, the button blocking strip 8 is arranged at the discharging end of the adjustable button guide channel 20, and is slidably arranged on one side of the base 1 through a sliding support 81, and is arranged away from the button sewing measuring device 24. A driving bearing 82 is arranged on the sliding support 81. A driving plate 83 is arranged on the left blocking seat 22 and cooperates with the driving bearing 82. A tension spring 84 is arranged between the sliding support 81 and the base 1. The driving bearing 82 is always abutted against the driving plate 83 through the tension spring 84. Specifically, the driving part of the driving plate is at an angle of 45 degrees with the blocking seat. Thus, the blocking seat is opened and closed, and the button blocking strip is synchronously moved, so that the button is located at a proper position.

[0040] In the feeding structure of the button sewing machine, the lifting and rotating feeding arm 3 comprises a lifting support 31, a rotating arm 32, a lifting cylinder 33, a rotating seat 34 and a pushing cylinder 35. The rotating arm 32 is rotatably arranged on the lifting support 31 through a rotating shaft 36. The lifting support 31 is connected with the base 1 through a sliding block sliding rail set. The lifting cylinder 33 is fixed on the base 1, and the lifting rod thereof is connected with the lifting support 31. The rotating shaft 36 is connected with the rotating seat 34 at the end thereof extending out of the lifting support 31. The pushing cylinder 35 is fixed on the lifting support 31, and the lifting rod thereof is movably connected with the rotating seat 34.

[0041] In the feeding structure of the button sewing machine, the button rotating and pressing motor 4 comprises a motor 41 and a button rotating rubber head 42. The button rotating rubber head 42 is fixedly connected with the end of the rotating shaft of the motor 41. Specifically, the button rotating rubber head is mainly used in cooperation with the button. Through the contact with the button, the motor is rotated to drive the button rotating rubber head to rotate. The button rotating rubber head drives the button to rotate. When the button is rotated to the set position, the button enters the positioning column of the button claw.

[0042] In the feeding structure of the button sewing machine, the rotating arm limiting plate and the rotating seat limiting plate are arranged on the lifting support 31. The adjustable buffer head 37 is arranged on the rotating arm limiting plate and the rotating seat limiting plate. Specifically, the rotating angle of the rotating arm can be adjusted, and the adjustable buffer head is a bolt.

[0043] In the feeding structure of the button sewing machine, the auxiliary pressing device 5 comprises a limiting strip 51 and an adjustable support 52. The limiting strip 51 is arranged on the adjustable support 52 and located in the adjustable button guide channel 20. The limiting strip 51 is provided with an air inlet hole 54 and a plurality of button blowing holes 53. The air inlet hole 54 and the button blowing holes 53 are in communication. The button blowing holes 53 are arranged on the lower side of the limiting strip 51 in an inclined manner. Specifically, this is to ensure the height of the adjustable button guide channel and ensure that the buttons in the channel pass one by one in order, and the phenomenon of button stacking does not occur.

[0044] In the feeding structure of the button sewing machine, the bottom of the base 1 is provided with left and right fine adjustment devices 11, the left and right fine adjustment devices 11 comprise fixed seats 111 and movable seats 112, the fixed seats 111 are fixed on the rack of the button sewing machine, the movable seats 112 are connected with the base 111, the fixed seats 111 and the movable seats 112 are connected through slide rail and slide block assemblies, and the fixed seats 111 and the movable seats 112 are provided with tensioning devices 113 and adjusting devices 114, the adjusting devices 114 can control the position of the movable seat 112 on the fixed seat 111, specifically, the adjusting devices 114 comprise fixed blocks 1141, adjusting bolts 1142, locking nuts 1143, nut one 1144 and nut two, the fixed blocks 1141 are fixed on the fixed seats 111 and below the movable seats 112, the adjusting bolts 1142 are connected with the fixed blocks 1141 and one end of the adjusting bolts 1142 extends between the movable seats 112 and the fixed seats 111, the locking nuts 1143 and the nut one 1144 are screwed on the adjusting bolts 1142, the movable seats 112 are provided with baffles 1121, the baffles 1121 are provided with through holes 1122, the baffles 1121 are located between the locking nuts 1143 and the nut one 1144 through the through holes 1122, the nut two and the nut one are screwed on the adjusting bolts, specifically, the movable seats and the fixed seats are close to each other through the tensioning devices, the fixed blocks of the adjusting devices are connected with the fixed seats, the adjusting bolts are threadedly connected with the fixed blocks, the locking nuts and the nut one and the nut two are screwed on the adjusting bolts, the locking nuts and the nut one are located on both sides of the baffles, the nut one and the nut two are screwed on the adjusting bolts and play a limiting role, the adjusting bolts rotate to drive the nut one and the nut two to rotate synchronously, the adjusting bolts rotate to push the movable seats to move, after the position is adjusted, the locking nuts can abut against the baffles to play a locking role and avoid movement, and the position between the fixed seats and the slide seats can be controlled by rotating the adjusting bolts; the tensioning devices 113 comprise connecting columns one 1131, connecting columns two 1132 and tensioning springs two 1133, the connecting columns one 1131 and the connecting columns two 1132 are detachably connected with the fixed seats 111 and the movable seats 112 respectively, and the tensioning springs two 1133 are connected with the connecting columns one 1131 and the connecting columns two 1132 respectively, specifically, this is to ensure that the locking nuts can be firmly attached to the baffles and ensure the stability of the movable seats and the fixed seats.

[0045] The above embodiments are only preferred embodiments of the utility model, and do not limit the protection scope of the utility model, therefore: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A feed structure for a button sewing machine, characterized by: The utility model provides a kind of adjustable buckle guiding platform, including base (1), adjustable buckle guiding platform (2), lifting rotary feeding arm (3), rotating buckle pressing motor (4) and auxiliary pressing device (5), the adjustable buckle guiding platform (2) is arranged on base (1), and the adjustable buckle guiding platform (2) is provided with adjustable buckle guiding channel (20), the auxiliary pressing device (5) is located above adjustable buckle guiding channel (20), the adjustable buckle guiding channel (20) has feed end and discharge end, the lifting rotary feeding arm (3) is rotatably arranged in one side of adjustable buckle guiding channel (20), and the buckle claw of lifting rotary feeding arm (3) is located below the discharge end of adjustable buckle guiding channel (20), the rotating buckle pressing motor (4) can rotate the buckle in the discharge end of adjustable buckle guiding channel (20) into the buckle claw of lifting rotary feeding arm (3), and the buckle is sent to sewing equipment for sewing by lifting rotary feeding arm (3).

2. The feeding structure of the button sewing machine according to claim 1, wherein: The adjustable buckle guiding platform (2) includes buckle guiding platform (21) and left material blocking seat (22) and right material blocking seat (23) that are close to each other and move synchronously, the left material blocking seat (22) and the right material blocking seat (23) are provided with button measuring device (24) on one side, the button measuring device (24) can control the distance between the left material blocking seat (22) and the right material blocking seat (23).

3. The feeding structure of the button sewing machine according to claim 2, wherein: The left material blocking seat (22) and the right material blocking seat (23) are respectively provided with guide columns (25), the guide columns (25) on the left material blocking seat (22) and the right material blocking seat (23) are staggered, and the left material blocking seat (22) and the right material blocking seat (23) are slidably arranged on both sides of the buckle guiding platform (21) through the guide columns (25), the button measuring device (24) includes outer side buckle plate (241) and inner side buckle plate (242), the outer side buckle plate (241) and the inner side buckle plate (242) are connected with the left material blocking seat (22) and the right material blocking seat (23) respectively, and a containing gap (243) is left between the outer side buckle plate (241) and the inner side buckle plate (242), the width of the containing gap (243) is less than the width of the adjustable buckle guiding channel (20), and the outer side buckle plate (241) and the inner side buckle plate (242) are further provided with hand bending plate (244).

4. The feeding structure of the button sewing machine according to claim 3, wherein: The left material blocking seat (22) and the right material blocking seat (23) are provided with synchronous device (6) and pull-in device (7) between them, the synchronous device (6) includes two racks (61) and a gear (62), the gear (62) is rotatably arranged below the buckle guiding platform (21), the two racks (61) are fixed below the left material blocking seat (22) and the right material blocking seat (23) respectively, and the two racks (61) are engaged with the gear (62); the pull-in device (7) includes connecting column (71) and tension spring one (72), the connecting column (71) is two, and is fixed on the left material blocking seat (22) and the right material blocking seat (23) respectively, and the two ends of the tension spring one (72) are connected with the connecting column (71) respectively.

5. The feeding structure of the button sewing machine according to claim 2, wherein: The device comprises a blocking strip (8) located at the discharge end of the adjustable guide channel (20), and the blocking strip (8) is slidably arranged on one side of the base (1) through a sliding support (81), and is arranged away from the button measuring device (24), a driving bearing (82) is arranged on the sliding support (81), a driving plate (83) matched with the driving bearing (82) is arranged on the left blocking seat (22), a tension spring (84) is arranged between the sliding support (81) and the base (1), and the driving bearing (82) is always abutted against the driving plate (83) through the tension spring (84).

6. The feeding structure of the button sewing machine according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The lifting and rotating feeding arm (3) comprises a lifting support (31), a rotating arm (32), a lifting cylinder (33), a rotating seat (34) and a pushing cylinder (35), the rotating arm (32) is rotatably arranged on the lifting support (31) through a rotating shaft (36), the lifting support (31) is connected with the base (1) through a sliding block sliding rail assembly, the lifting cylinder (33) is fixed on the base (1), and the lifting cylinder (33) is connected with the lifting support (31) through a telescopic rod, one end of the rotating shaft (36) extending out of the lifting support (31) is connected with the rotating seat (34), and the pushing cylinder (35) is fixed on the lifting support (31), and the pushing cylinder (35) is movably connected with the rotating seat (34) through a telescopic rod.

7. The feeding structure of the button sewing machine according to claim 6, wherein: The button rotating and pressing motor (4) comprises a motor (41) and a button rotating rubber head (42), and the button rotating rubber head (42) is fixedly connected with the rotating shaft end of the motor (41).

8. The feeding structure of the button sewing machine according to claim 6, wherein: The lifting support (31) is provided with a rotating arm limiting plate and a rotating seat limiting plate, and the rotating arm limiting plate and the rotating seat limiting plate are both provided with adjustable buffer heads (37).

9. The feeding structure of the button sewing machine according to claim 6, wherein: The auxiliary pressing device (5) comprises a limiting strip (51) and an adjustable support (52), the limiting strip (51) is arranged on the adjustable support (52) and located in the adjustable guide channel (20), the limiting strip (51) is provided with an air inlet hole (54) and a plurality of button blowing holes (53), the air inlet hole (54) and the button blowing holes (53) are communicated, and the button blowing holes (53) are arranged on the lower side of the limiting strip (51) in an inclined manner.

10. The feeding structure of the button sewing machine according to claim 6, wherein: A left-right fine adjustment device (11) is arranged below the base (1), the left-right fine adjustment device (11) comprises a fixed seat (111) and a movable seat (112), the fixed seat (111) is fixed on the rack of the button sewing machine, the movable seat (112) is connected with the base (1), the fixed seat (111) and the movable seat (112) are connected through a sliding rail sliding block assembly, and a tensioning device (113) and an adjusting device (114) are arranged between the fixed seat (111) and the movable seat (112), and the adjusting device (114) can control the position of the movable seat (112) on the fixed seat (111).

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