A quilt processing device with a cover core anti-deviation calibration device

Abstract

The utility model relates to quilt processing technical field, concretely to a kind of quilt processing equipment containing cover quilt core anti-deviation calibration device, including roller bed frame, the roller bed frame outer surface left and right sides are equipped with slide rail components, two the slide rail components outer surface are equipped with front and back symmetry's hydraulic pole one, two the hydraulic pole one output end are fixedly connected with presser plate, the roller bed frame left end is equipped with conveying mechanism, the conveying mechanism middle part is equipped with deviation rectifying mechanism, the utility model is through the cooperation of slide rail components, presser plate, motor one and hydraulic pole one, different width quilt core or cover can be compacted, through the cooperation of motor two, driving part, rotating roller one, lower pressure group, rotating rod and belt, different thickness quilt core or cover is automatically entered into roller bed frame, through the cooperation of L-shaped plate, deviation rectifying group and pressure strip, quilt core or cover is rectified in the process of transportation, without artificial positioning compacting, time-saving and labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of quilt processing technology, specifically a quilt processing equipment containing a quilt cover and quilt core anti-offset calibration device. Background Technology

[0002] A quilt is a type of bedding, a rectangular piece of fabric large enough to cover the human body, generally used for warmth during sleep. A quilt is usually made of a quilt cover or sheet wrapped with cotton batting. A quilt made of cotton is called a cotton quilt. In addition to cotton, quilts can also be made of wool, silk, or synthetic fibers such as acrylic fiber. Quilts need to be clamped during processing. However, the clamping equipment used in current quilt processing is not convenient for clamping quilts of different thicknesses, and the quilts need to be smoothed by hand, which is inconvenient.

[0003] Chinese patent document CN213765495U discloses a clamping device for quilt processing, including a base plate with a groove inside. A rotating seat is fixedly installed inside the groove, and a threaded rod is rotatably connected inside the rotating seat. A threaded sleeve is fitted onto the outer side of the threaded rod, and an annular groove is formed on the side wall of the threaded sleeve. A turntable is fixedly installed on the outer side of the threaded rod, and the turntable contacts the base plate. A handle is fixedly installed on the outer side of the turntable. This invention, through the threaded connection between the connecting rod and the connecting seat, allows the rotation of the connecting rod to move a pressure plate downwards, enabling the pressure plate to clamp quilts of different thicknesses. The downward movement of the pressure plate also compresses a fixed ring spring. When the quilt needs to be removed, the connecting rod moves upwards, and the compression of the spring moves the pressure plate upwards, allowing the quilt to be removed directly, which is more convenient. However, it requires manual alignment before clamping, resulting in a low degree of automation. Therefore, we propose a quilt processing device with a quilt cover and quilt core anti-displacement calibration device. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a quilt processing equipment with a quilt cover and quilt core anti-deviation calibration device, including a roller bed frame. The roller bed frame has slide rail components on both the left and right sides of its outer surface. A motor is provided on the upper front side of each of the two slide rail components. A hydraulic rod is provided symmetrically on the outer surface of each of the two slide rail components. A pressure plate is fixedly connected to the output end of each of the two hydraulic rods. A conveying mechanism is provided at the left end of the roller bed frame. A deviation correction mechanism is provided in the middle of the conveying mechanism.

[0005] In some embodiments, the conveying mechanism includes two crossbars, with a pressure bar fixedly connected to the middle of the lower ends of the two crossbars, and conveying groups fixedly connected to the left and right ends of the two crossbars. Hydraulic rods are provided in the middle of the upper side of the two conveying groups, and a motor is provided in the upper front side of the right conveying group. A drive component is connected to the right conveying group via a belt.

[0006] In some embodiments, both conveying groups include U-shaped frames, each of the two U-shaped frames has a second sliding groove on its upper front end, each of the two U-shaped frames has a first sliding groove on its upper inner cavity, each of the two first sliding grooves has a sliding pressure group slidably connected to its inner cavity, each of the two U-shaped frames has a mounting hole in its upper middle part, each of the two U-shaped frames has a first rotating roller rotatably connected to its upper inner cavity, and each of the two first rotating rollers has a second transmission wheel fixedly connected to its front end through the inner cavity of the U-shaped frame.

[0007] In some embodiments, the left end of the roller bed frame is fixedly connected to the right side U-shaped frame, the two transmission wheels are connected by a belt, the outer surface of the right side transmission wheel is connected to the drive component by a belt, the middle part of the upper end of the two U-shaped frames is fixedly connected to two hydraulic rods, and the output ends of the two hydraulic rods pass through the inner cavities of the two mounting holes respectively.

[0008] In some embodiments, both pressing groups include sliding frames, and rotating rollers are rotatably connected to the inner cavities of both sliding frames. Z-shaped plates are fixedly connected to the front sides of the outer surfaces of both sliding frames. The front ends of both rotating rollers penetrate the inner cavities of the sliding frames and are fixedly connected to transmission wheels. The outer surfaces of the two sliding frames are slidably connected to the inner cavities of two sliding grooves. The inner cavities of the two Z-shaped plates are slidably connected to the front sides of the outer surfaces of two U-shaped frames. The front ends of the two sliding frames penetrate the inner cavities of two sliding grooves. The outer surfaces of the two transmission wheels are connected by belts. The front end of the right transmission wheel is fixedly connected to the output end of a motor. The front side of the upper horizontal direction of the right Z-shaped plate is fixedly connected to the lower end of a motor. The front sides of the two sliding frames at their closest points are fixedly connected to a front crossbar. The rear sides of the two sliding frames at their closest points are fixedly connected to a rear crossbar.

[0009] In some embodiments, the correction mechanism includes two L-shaped plates that are symmetrical front and back. The upper ends of the two L-shaped plates are fixedly connected to symmetrical sliding plates in the horizontal direction. The two L-shaped plates are provided with a plurality of rotating rods on the side that is close to each other. The two L-shaped plates are provided with correction groups. The left and right sides of the outer surfaces of the two L-shaped plates are fixedly connected to arc-shaped support plates. The front part of the side that is close to each other of the two U-shaped frames is fixedly connected to the front L-shaped plate. The rear part of the side that is close to each other of the two U-shaped frames is fixedly connected to the rear L-shaped plate.

[0010] In some embodiments, both of the correction groups include side plates. The lower ends of the two side plates are provided with symmetrical sliding grooves. The lower sides of the two side plates that are close to each other are provided with a plurality of sleeve holes. The upper parts of the sides that are close to each other are provided with rectangular grooves. The lower parts of the sides that are close to each other are fixedly connected to connecting rods. The lower outer surfaces of the two connecting rods are fixedly connected to hydraulic rods. The two hydraulic rods are fixedly connected to the lower ends of the two L-shaped plates respectively. The inner cavities of the two sliding grooves on the same side are slidably connected to the outer surfaces of the two sliding plates respectively. The inner cavities of the sleeve holes on the same side are respectively sleeved and connected to the outer surfaces of the several rotating rods. The inner cavities of the two rectangular grooves are slidably connected to the outer surface of the pressure strip.

[0011] This utility model has at least the following beneficial effects: 1. This utility model, through the combined use of a slide rail component, a pressure plate, a motor, and a hydraulic rod, can not only clamp and hold comforters or covers of different thicknesses, but also comforters or covers of different widths, further increasing the practicality of the device. Furthermore, through the combined use of a motor, a drive component, a rotating roller, a lower pressing group, a rotating rod, and a belt, comforters or covers of different thicknesses automatically enter the roller bed frame and are clamped and held. In addition, through the combined use of an L-shaped plate, a correction group, and a pressure strip, the comforter or cover automatically corrects its alignment and centers itself during transportation. When transported to the roller bed frame, no manual positioning and clamping is required, saving time and effort. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective; Figure 3 This is a schematic diagram of the conveying mechanism of this utility model; Figure 4 This is a schematic diagram of the conveyor assembly of this utility model; Figure 5 This is a schematic diagram of the pressing assembly of this utility model; Figure 6 This is a schematic diagram of the correction mechanism of this utility model; Figure 7 This is a schematic diagram of the correction mechanism of this utility model from another perspective; Figure 8 This is a schematic diagram of the correction assembly of this utility model.

[0013] In the diagram: 1. Roller bed frame; 2. Slide rail assembly; 3. Pressure plate; 4. Motor 1; 5. Hydraulic rod 1; 6. Conveying mechanism; 61. Crossbar; 62. Pressure bar; 63. Conveying group; 631. U-shaped frame; 632. Rotating roller 1; 633. Sliding groove 1; 634. Mounting hole; 635. Lowering group; 6351. Rotating roller 2; 6352. Sliding frame; 6353. Z-shaped plate; 6354. Transmission wheel 1; 636. Sliding groove 2; 637. Transmission wheel 2; 64. Hydraulic rod 2; 65. Motor 2; 66. Drive component; 7. Correction mechanism; 71. L-shaped plate; 72. Rotating rod; 73. Arc-shaped support plate; 74. Correction group; 741. Side plate; 742. Sleeve hole; 743. Slide groove; 744. Hydraulic rod 3; 745. Connecting rod; 746. Rectangular groove; 75. Slide plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1, please refer to Figure 1-5 This utility model provides a technical solution: a quilt processing equipment with a quilt cover and quilt core anti-deviation calibration device, including a roller bed frame 1, with slide rail components 2 on both the left and right sides of the outer surface of the roller bed frame 1, a motor 4 on the upper front side of the two slide rail components 2, and symmetrical hydraulic rods 5 on the outer surface of the two slide rail components 2. The output ends of the two hydraulic rods 5 are fixedly connected to pressure plates 3. A conveying mechanism 6 is provided at the left end of the roller bed frame 1, and a deviation correction mechanism 7 is provided in the middle of the conveying mechanism 6.

[0016] It should be noted that the specific installation method, circuit connection method, and control method of the motor-4 and hydraulic rod-5 in this utility model are all conventional designs and are standard design methods used by designers. In addition, the slide rail component 2 is composed of a U-shaped frame, a sliding groove opened on the top wall of the inner cavity of the U-shaped frame, a bidirectional screw rotatably connected in the sliding groove, and a front and rear symmetrical slide seat meshing with the screw rod. The lower end of the slide seat is fixedly connected to the upper end of the hydraulic rod-5. By starting the motor-4, the bidirectional screw in the slide rail component 2 can be driven to rotate, thereby driving the two slide seats to move away from or towards each other in the inner cavity of the sliding groove, ultimately achieving the purpose of adjusting the distance between the two hydraulic rods-5 on the same side. By starting the hydraulic rod-5, the pressure plate 3 is driven to press the quilt cover or quilt core on the roller bed frame 1, which facilitates subsequent processing operations. The conveying mechanism 6 and the correction mechanism 7 are used in conjunction to correct the quilt cover or quilt core before it enters the roller bed frame 1.

[0017] The conveying mechanism 6 includes two crossbars 61. A pressure bar 62 is fixedly connected to the middle of the lower end of the two crossbars 61. Conveying groups 63 are fixedly connected to both the left and right ends of the two crossbars 61. A hydraulic rod 64 is provided in the middle of the upper side of the two conveying groups 63. A motor 65 is provided in the upper front side of the right conveying group 63. A drive component 66 is connected to the right conveying group 63 via a belt. Both conveying groups 63 include a U-shaped frame 631. A sliding groove 636 is provided on the upper front side of the two U-shaped frames 631. A sliding groove 633 is provided on the upper inner side of the two U-shaped frames 631. A pressing group 635 is slidably connected to the inner cavity of the two sliding grooves 633. An installation hole 634 is provided in the middle of the upper end of the two U-shaped frames 631. A rotating roller 632 is rotatably connected to the upper inner cavity of the two U-shaped frames 631. The front end of the two rotating rollers 632 passes through the inner cavity of the U-shaped frame 631 and is fixedly connected to a transmission wheel 637. The left end of the roller bed frame 1 is fixedly connected to the right side U-shaped frame 631. The two transmission wheels 637 are connected by a belt. The outer surface of the right side transmission wheel 637 is connected to the drive component 66 by a belt. The upper middle part of the two U-shaped frames 631 is fixedly connected to the two hydraulic rods 64 respectively, and the output ends of the two hydraulic rods 64 pass through the inner cavity of the two mounting holes 634 respectively.

[0018] It should be noted that the specific installation method, circuit connection method, and control method of the motor 65 and drive component 66 in this utility model are all conventional designs and are standard design methods used by designers. The drive component 66 consists of a drive motor and a pulley adapted to the transmission wheel 637. By starting the motor 65 and drive component 66, and with the cooperation of the belt, the two rotating rollers 632 are rotated and the two pressing groups 635 are operated. When the duvet cover or duvet core is fed between the rotating rollers 632 and the pressing groups 635 from the left, it will be pushed to the right by the rotating rollers 632 and the pressing groups 635. The conveying process is assisted by the correction mechanism 7, which corrects the deviation during transport. Finally, the quilt is conveyed to the roller bed frame 1 via the rotating roller 632 on the right and the pressing group 635. In addition, when the thickness of the quilt core is different, the hydraulic rods 64 on the left and right sides can be activated, which will drive the two pressing groups 635 to move up and down in the inner cavity of the two sliding grooves 633 respectively, thereby adjusting the distance between the pressing group 635 and the rotating roller 632 to suit quilt cores of different thicknesses. When the quilt cover or quilt core is transported between the rotating roller 632 and the pressing group 635 on the left and right sides, the pressure strip 62 will press against the top of the quilt cover or quilt core to cooperate with the correction mechanism 7 for deviation correction.

[0019] Both pressing assemblies 635 include sliding frames 6352. Rotating rollers 6351 are rotatably connected to the inner cavities of both sliding frames 6352. Z-shaped plates 6353 are fixedly connected to the front sides of the outer surfaces of both sliding frames 6352. The front ends of the two rotating rollers 6351 penetrate the inner cavities of the sliding frames 6352 and are fixedly connected to a transmission wheel 6354. The outer surfaces of the two sliding frames 6352 are slidably connected to the inner cavities of two sliding grooves 633, respectively. The inner cavities of the two Z-shaped plates 6353 are slidably connected to the front sides of the outer surfaces of the two U-shaped frames 631, respectively. The front ends of the two sliding frames 6352 respectively penetrate the inner cavity of the two sliding grooves 636. The outer surfaces of the two drive wheels 6354 are connected by a belt. The front end of the right drive wheel 6354 is fixedly connected to the output end of the motor 65. The front side of the upper horizontal direction of the right Z-shaped plate 6353 is fixedly connected to the lower end of the motor 65. The front sides of the two sliding frames 6352 that are close to each other are fixedly connected to the front crossbar 61. The rear sides of the two sliding frames 6352 that are close to each other are fixedly connected to the rear crossbar 61.

[0020] In detail, starting motor 65, with the help of the belt, causes the two transmission wheels 6354 to drive the rotating roller 6351 to rotate in the inner cavity of the sliding frame 6352. When the duvet cover or duvet insert enters between the rotating roller 6351 and the rotating roller 632, it will be conveyed to the right by the rotating roller 6351 and the rotating roller 632. When hydraulic rod 64 is activated, it will drive the sliding frame 6352 to move up and down in the inner cavity of the sliding groove 633, thereby adjusting the distance between the rotating roller 6351 and the rotating roller 632, so that the device can be used for duvet inserts of different thicknesses.

[0021] Example 2, please refer to Figure 2-8 This utility model provides a technical solution: a quilt processing equipment with a quilt cover and quilt core anti-deviation calibration device, the deviation correction mechanism 7 includes front and rear symmetrical L-shaped plates 71, the upper ends of the two L-shaped plates 71 are fixedly connected to left and right symmetrical sliding plates 75 in the horizontal direction, the two L-shaped plates 71 are provided with a number of rotating rods 72 on the side close to each other, the two L-shaped plates 71 are provided with a deviation correction group 74, the left and right sides of the outer surface of the two L-shaped plates 71 are fixedly connected to arc-shaped support plates 73, the front part of the side close to each other of the two U-shaped frames 631 is fixedly connected to the front L-shaped plate 71, and the rear part of the side close to each other of the two U-shaped frames 631 is fixedly connected to the rear L-shaped plate 71. Both correction groups 74 include side plates 741. The lower ends of the two side plates 741 are provided with symmetrical sliding grooves 743. The lower sides of the two side plates 741 that are close to each other are provided with several sleeve holes 742. The upper parts of the two side plates 741 that are close to each other are provided with rectangular grooves 746. The lower parts of the two side plates 741 that are close to each other are fixedly connected with connecting rods 745. The lower outer surfaces of the two connecting rods 745 are fixedly connected with hydraulic rods 744. The two hydraulic rods 744 are fixedly connected to the lower ends of the two L-shaped plates 71 respectively. The inner walls of the two sliding grooves 743 on the same side are slidably connected to the outer surfaces of the two sliding plates 75 respectively. The inner cavities of the several sleeve holes 742 on the same side are respectively sleeved and connected to the outer surfaces of several rotating rods 72. The inner cavities of the two rectangular grooves 746 are slidably connected to the outer surface of the pressure strip 62.

[0022] It should be noted that the specific installation method, circuit connection method, and control method of the hydraulic rod 744 in this utility model are all conventional designs and are standard design practices for designers. Furthermore, the two arc-shaped support plates 73, with their sides furthest from each other, are respectively attached to the sides of the outer surfaces of the two rotating rollers 632 that are close to each other, allowing the duvet cover or duvet insert to smoothly move from the rotating rollers 632 to the rotating rods 72. When the duvet cover or duvet insert is transported to the rotating rods 72, the hydraulic rod 744 is activated, driving the side plate 741 to slide via the connecting rod 745. With the cooperation of the groove 743, the side plates 741 on the front and rear sides move closer to each other or further away from each other on the outer surface of the slide plate 75, thereby pushing the quilt cover or quilt core to center. At the same time, the hydraulic rod 64 drives the sliding frame 6352 to slide up and down, and with the cooperation of the two crossbars 61, the pressure strip 62 slides up and down in the inner cavity of the rectangular groove 746 on the front and rear sides. When conveying quilt cores of different thicknesses, the pressure strip 62 can always be pressed against the quilt core. With the cooperation of the two side plates 741, the purpose of correction is finally achieved.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quilt processing equipment including a quilt cover and quilt core anti-displacement calibration device, comprising a roller bed frame (1), characterized in that: The roller bed frame (1) has slide rail components (2) on both the left and right sides of its outer surface. The upper front end of each of the two slide rail components (2) is equipped with a motor (4). The outer surface of each of the two slide rail components (2) is equipped with a hydraulic rod (5) symmetrically arranged in front and back. The output end of each of the two hydraulic rods (5) is fixedly connected to a pressure plate (3). The left end of the roller bed frame (1) is equipped with a conveying mechanism (6). The middle part of the conveying mechanism (6) is equipped with a correction mechanism (7).

2. The quilt processing equipment with a quilt cover and quilt core anti-offset calibration device according to claim 1, characterized in that: The conveying mechanism (6) includes two crossbars (61), with a pressure bar (62) fixedly connected to the middle of the lower end of the two crossbars (61). Conveying groups (63) are fixedly connected to both the left and right ends of the two crossbars (61). Hydraulic rods (64) are provided on the middle of the upper side of the two conveying groups (63). A motor (65) is provided on the upper front side of the right conveying group (63). A drive component (66) is connected to the right conveying group (63) via a belt.

3. The quilt processing equipment with a quilt cover and quilt core anti-offset calibration device according to claim 2, characterized in that: Both conveying groups (63) include a U-shaped frame (631). A sliding groove 2 (636) is provided on the upper side of the front end of both U-shaped frames (631). A sliding groove 1 (633) is provided on the upper side of the inner cavity of both U-shaped frames (631). A pressing group (635) is slidably connected to the inner cavity of both sliding groove 1 (633). An installation hole (634) is provided in the middle of the upper end of both U-shaped frames (631). A rotating roller 1 (632) is rotatably connected to the upper side of the inner cavity of both U-shaped frames (631). The front end of both rotating roller 1 (632) passes through the inner cavity of the U-shaped frame (631) and is fixedly connected to a transmission wheel 2 (637).

4. The quilt processing equipment with a quilt cover and quilt core anti-offset calibration device according to claim 3, characterized in that: The left end of the roller bed frame (1) is fixedly connected to the right side U-shaped frame (631). The two transmission wheels (637) are connected by a belt. The outer surface of the right side transmission wheel (637) is connected to the drive component (66) by a belt. The upper middle part of the two U-shaped frames (631) is fixedly connected to the two hydraulic rods (64) respectively, and the output ends of the two hydraulic rods (64) pass through the inner cavity of the two mounting holes (634) respectively.

5. The quilt processing equipment with a quilt cover and quilt core anti-offset calibration device according to claim 3, characterized in that: Both of the pressing assemblies (635) include a sliding frame (6352). A rotating roller (6351) is rotatably connected to the inner cavity of each of the two sliding frames (6352). A Z-shaped plate (6353) is fixedly connected to the front side of the outer surface of each of the two sliding frames (6352). The front ends of each of the two rotating rollers (6351) penetrate the inner cavity of the sliding frame (6352) and are fixedly connected to a transmission wheel (6354). The outer surfaces of the two sliding frames (6352) are slidably connected to the inner cavities of the two sliding grooves (633), respectively. The inner cavities of the two Z-shaped plates (6353) are slidably connected to the front sides of the outer surfaces of the two U-shaped frames (631), respectively. Next, the front ends of the two sliding frames (6352) respectively penetrate the inner cavity of the two sliding grooves (636), and the outer surfaces of the two transmission wheels (6354) are connected by a belt. The front end of the transmission wheel (6354) on the right side is fixedly connected to the output end of the motor (65). The upper front side of the Z-shaped plate (6353) on the right side is fixedly connected to the lower end of the motor (65) in the horizontal direction. The front sides of the two sliding frames (6352) that are close to each other are fixedly connected to the front crossbar (61), and the rear sides of the two sliding frames (6352) that are close to each other are fixedly connected to the rear crossbar (61).

6. The quilt processing equipment with a quilt cover and quilt core anti-offset calibration device according to claim 3, characterized in that: The correction mechanism (7) includes two L-shaped plates (71) that are symmetrical front and back. The upper ends of the two L-shaped plates (71) are fixedly connected to the left and right symmetrical sliding plates (75). The two L-shaped plates (71) are provided with a number of rotating rods (72) on the side that is close to each other. The two L-shaped plates (71) are provided with correction groups (74). The left and right sides of the outer surfaces of the two L-shaped plates (71) are fixedly connected to arc-shaped support plates (73). The front part of the side that is close to each other of the two U-shaped frames (631) is fixedly connected to the front L-shaped plate (71). The rear part of the side that is close to each other of the two U-shaped frames (631) is fixedly connected to the rear L-shaped plate (71).

7. The quilt processing equipment with a quilt cover and quilt core anti-offset calibration device according to claim 6, characterized in that: Both of the aforementioned correction groups (74) include side plates (741). The lower ends of the two side plates (741) are provided with symmetrical sliding grooves (743). Several holes (742) are provided on the lower sides of the two side plates (741) at their adjacent ends. A rectangular groove (746) is provided on the upper part of the side of the two side plates (741) at their adjacent ends. A connecting rod (745) is fixedly connected to the lower part of the side of the two side plates (741) at their adjacent ends. Hydraulic rods (744) are fixedly connected to the lower side of the outer surface of rod (745). The two hydraulic rods (744) are fixedly connected to the lower ends of the two L-shaped plates (71) respectively. The inner walls of the two sliding grooves (743) on the same side are slidably connected to the outer surfaces of the two sliding plates (75) respectively. The inner cavities of several sleeve holes (742) on the same side are respectively sleeved and connected to the outer surfaces of several rotating rods (72). The inner cavities of the two rectangular grooves (746) are slidably connected to the outer surface of the pressure strip (62).

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