Deviation rectifying mechanism of fillet-free blank box conveying device

Abstract

The utility model provides a deviation rectifying mechanism of a fillet-free blank box conveying device, and aims to solve the problem of direction deviation of blank boxes in the conveying process. The mechanism comprises a transverse plate, a supporting plate, a first sliding block, a second sliding block, a first sliding rail, a second sliding rail and a second driving mechanism. Supporting plates are arranged at the two ends of the transverse plate, slidably connected with the transverse plate and capable of moving in the axis direction of the transverse plate. The first sliding block is connected with the transverse plate through the first sliding rail, the second sliding block is rotationally connected with the first sliding block through the second sliding rail, and the second sliding rail is perpendicular to the first sliding rail. The second driving mechanism controls the second sliding block to move along the second sliding rail and drives the first sliding block to rotate around the second sliding block and move along the first sliding rail, so that the positions of the supporting plate and the blank box are adjusted, and deviation correction is achieved. In addition, a third sliding rail and a third sliding block are arranged at the end of the supporting plate, the third sliding block is connected with the sliding assembly through a first rotating block and a first guiding shaft, and the position of the blank box is further adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a no corner blank box transport device's rectifying mechanism. BACKGROUND

[0002] In the packaging industry, the transportation and forming of no corner blank boxes are important links in the production process. In order to ensure the stability and accuracy of the blank box during transportation, a rectifying mechanism is usually needed to correct the position of the blank box to prevent it from deviating or tilting during transportation.

[0003] The Chinese utility model patent document with publication number "CN202319077U" discloses a no corner blank box surface paper bonding conveying mechanism, which is internally provided with a rectifying mechanism (according to the description of the document, paragraph 0023 and the description of the drawings Figure 3 ). The rectifying mechanism mainly consists of a sealing plate, a return spring, a sliding rod and a pull rod. When the pull rod 11 moves to the position and hits the sealing plate 31 of the rectifying mechanism, the return spring 32 is compressed to make the sliding rod 35 slide in the pull rod 11. During the movement of the pull rod 11 driving the sliding rod 35, once encountering the sealing plate 31, it will be hindered and trigger the action of the return spring 32, so that the sliding rod 35 can slide relatively in the pull rod 11, thereby ensuring that the sliding rod 35 and the falling box positioning block 33 thereon can be accurately stopped at the preset position.

[0004] Firstly, the existing rectifying mechanism mainly relies on the return spring to rectify and position the sealing plate, and its positioning accuracy is extremely poor. In actual working conditions, the elastic force and recovery force of the return spring are both indeterminate constants, and the uncontrollable factors are extremely large. Only when the sealing plate moves to a state where it cannot move is the position determined, so it cannot ensure that the sealing plate moves to the limit position every time.

[0005] Secondly, the rectifying mechanism needs to contact and rub with the pull rod and other components. In the actual production process of the paper box forming machine, the speed is fast and the paper box forming frequency is high. Over time, the rectifying mechanism is prone to failure. UTILITY MODEL CONTENTS

[0006] The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies of the prior art, provide a rectifying mechanism for a no corner blank box transport device, solve the problem of position deviation during the transportation of the blank box in the prior art, and improve the positioning accuracy, reliability and durability of the mechanism.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] The deviation rectifying mechanism of the cornerless embryo box conveying device is characterized in that: a horizontal plate is provided, two ends of the horizontal plate are respectively provided with a group of support plates, the two groups of support plates are parallel to each other, the end of each group of support plates is slidably connected with the end of the horizontal plate and the support plates can reciprocate along the axis direction of the horizontal plate, one end of the horizontal plate is slidably connected with a first sliding block through a first sliding rail, the first sliding rail is fixed on the horizontal plate, the first sliding block is rotatably connected with a second sliding block, the second sliding block is slidably connected with a second sliding rail, the axis direction of the first sliding rail is perpendicular to the axis direction of the second sliding rail, the second sliding rail is arranged along the axis direction of the support plate, the second sliding block is connected with a second driving mechanism, when the second driving mechanism controls the second sliding block to move along the second sliding rail, the first sliding block rotates around the second sliding block and simultaneously moves along the first sliding rail.

[0009] When the embryo box deviates in the conveying process (i.e., the deviation exists between the embryo box and the paper), the second driving mechanism is started to control the second sliding block to move along the second sliding rail. The movement of the second sliding block is transmitted to the first sliding block through the rotary connection, so that the first sliding block rotates around the second sliding block and simultaneously moves along the first sliding rail. This compound motion causes the corresponding position adjustment of the support plate (and the embryo box) connected with the first sliding block directly or indirectly. Since the two groups of support plates are respectively slidably connected with the horizontal plate, the support plates can reciprocate along the axis direction of the horizontal plate, so as to further adjust the position of the embryo box. By adjusting the relative position and angle of the first sliding block and the second sliding block, the moving direction and distance of the support plate (and the embryo box) can be accurately controlled, so as to realize the deviation rectification of the embryo box. The present scheme controls the movement of the second sliding block through the second driving mechanism, and then drives the first sliding block to rotate around the second sliding block and move along the first sliding rail, so as to accurately adjust the position of the support plate (and the embryo box), greatly improve the positioning accuracy, and ensure that the embryo box can be accurately rectified to the predetermined position each time. At the same time, the sliding connection and rotary connection are adopted, so as to reduce the direct friction between the components and reduce the risk of wear and failure. At the same time, since the accurate second driving mechanism is adopted for control, the performance decline caused by long-term friction and wear is avoided, so as to enhance the reliability and durability of the entire deviation rectifying mechanism.

[0010] The above-mentioned deviation rectifying mechanism of the cornerless embryo box conveying device can be further provided with a third sliding rail at the end of the support plate away from the horizontal plate, the third sliding rail is fixed on the support plate and arranged along the axis direction of the support plate, the third sliding rail is slidably connected with a third sliding block, the third sliding block is fixedly connected with a first rotating block through a screw, the first rotating block is rotatably connected with a first guide shaft through a bearing, and the lower end of the first guide shaft is connected with a sliding component.

[0011] The deviation rectifying mechanism of the embryo box conveying device without right angle can be further provided with a fourth sliding block connected with the first guide shaft, a fourth sliding rail slidingly connected with the fourth sliding block, and the fourth sliding rail fixed to the rack.

[0012] When the embryo box deviates in direction during the conveying process, the second driving mechanism is started to control the second sliding block to move along the second sliding rail, thereby driving the first sliding block to rotate around the second sliding block and move along the first sliding rail. To avoid interference at the other end of the support plate, the third sliding block moves with the movement of the support plate. The first rotating block moves with the movement of the third sliding block, but since it is rotationally connected with the first guide shaft through a bearing, the first guide shaft can rotate relative to the first rotating block within a certain angle range. The fourth sliding block is connected with the first guide shaft, and when the first guide shaft rotates due to the adjustment of the support plate, the fourth sliding block will slide along the fourth sliding rail to further adjust the position of the support plate (and the embryo box), so as to ensure that the final position of the embryo box corresponds to the face paper.

[0013] The deviation rectifying mechanism of the embryo box conveying device without right angle can be further provided with a second rotating block fixedly connected with the first sliding block through a screw, a second guide shaft rotationally connected with the second rotating block through a bearing, a first transmission plate connected with the lower end of the second guide shaft, the second sliding block fixedly connected with the lower side of the first transmission plate through a screw, and the side edge of the first transmission plate connected with the second driving mechanism.

[0014] The deviation rectifying mechanism of the embryo box conveying device without right angle can be further provided with a first servo motor, the body of the first servo motor is fixed to the rack, the output end of the first servo motor is connected with a main transmission gear, the main transmission gear is in meshing transmission with a second rack, the second rack is fixedly connected with the first transmission plate, and the second rack is arranged parallel to the second sliding rail.

[0015] During the deviation rectifying process, the first servo motor is started to indirectly control the rotation of the main transmission gear by precisely controlling the rotation angle and speed of the output end of the motor. The meshing transmission between the main transmission gear and the second rack converts the rotary motion of the motor into the linear motion of the second rack. Since the second rack is fixedly connected with the first transmission plate, the linear motion of the second rack will directly drive the first transmission plate to move in the direction parallel to the second sliding rail. With the movement of the first transmission plate, the first sliding block connected with the first transmission plate through the second guide shaft and the second rotating block will also move correspondingly. The first sliding block not only moves along the first sliding rail, but also rotates around a center point (i.e. the axis of the second rotating block) due to the rotational connection between the second guide shaft and the second rotating block. This compound motion enables the support plate (and the embryo box) directly or indirectly connected with the first sliding block to simultaneously adjust the position in the horizontal and vertical directions.

[0016] The deviation rectifying mechanism of the embryo box conveying device without right angle can be further provided with a fifth sliding rail fixed to the end of the horizontal plate, the axis direction of the fifth sliding rail is parallel to the axis direction of the first sliding rail, a fifth sliding block is slidingly connected to the fifth sliding rail, and the fifth sliding block is fixedly installed at the end of the supporting plate.

[0017] The supporting plate can move relative to the horizontal plate, avoiding interference between the horizontal plate and the supporting plate when the horizontal plate moves.

[0018] The deviation rectifying mechanism of the embryo box conveying device without right angle can be further provided with a third rotating block fixedly connected to the middle of the horizontal plate by a screw, a third guide shaft is rotatably connected to the third rotating block by a bearing, a second transmission plate is connected to the lower end of the third guide shaft, a sixth sliding block is fixedly connected to the second transmission plate by a screw, a sixth sliding rail is slidingly connected to the sixth sliding block, and the sixth sliding rail is fixed to the rack and arranged parallel to the axis direction of the second sliding rail.

[0019] The third rotating block, the sixth sliding rail and the sixth sliding block are arranged in the middle of the horizontal plate, the center point of the horizontal plate is guided during the adjustment of the position of the embryo box, the irregular movement of the horizontal plate is avoided, and it is ensured that the center point of the horizontal plate is always in the axis direction of the sixth sliding rail, that is, the center point of the embryo box is always in the axis direction of the sixth sliding rail during the adjustment of the position of the embryo box, that is, the directions of the two sides of the embryo box change during the adjustment process until the direction of the embryo box is consistent with the direction of the face paper.

[0020] The deviation rectifying mechanism of the embryo box conveying device without right angle can be further provided with two groups of face paper sensors arranged below the supporting plate and used for detecting the positions of the side edges of the face paper, a positioning bracket is connected to the face paper sensors, a strip-shaped hole is arranged on the positioning bracket, a plurality of groups of screw holes are arranged on the supporting plate, and the strip-shaped hole and any group of screw holes are detachably connected by a screw.

[0021] The face paper sensors detect the two sides of the face paper in real time (the face paper is below the embryo box), the first servo motor automatically adjusts the speed, direction and other parameters according to the data of the face paper sensors, automatically adjusts the direction of the embryo box, and the direction of the embryo box is consistent with the direction of the face paper. Meanwhile, the strip-shaped hole is arranged, and the installation position of the face paper sensor is adjusted according to the actual situation.

[0022] The deviation rectifying mechanism of the embryo box conveying device without right angle can be further provided with four groups of embryo box holding plates arranged in a rectangular distribution between the two groups of supporting plates, a ninth sliding block is connected to the embryo box holding plates, a belt is connected to the ninth sliding block, a belt wheel is connected to the belt, the belt wheel is rotatably installed on the supporting plate, a second servo motor is connected to the belt wheel, and the body of the second servo motor is fixed to the supporting plate.

[0023] Four groups of rectangular distribution of holding box plates are used for shaping the flat paperboard into a blank box, when the blank box is pasted with the face paper, the second servo motor transports the blank box and the face paper through the belt, facilitating the next time of forming and deviation correction.

[0024] The utility model will be further explained in detail below in combination with the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 Structure diagram of the embodiment of the utility model Figure 1 ;

[0026] Figure 2 For Figure 1 The local amplification diagram of A in the middle;

[0027] Figure 3 For Figure 1 The local amplification diagram of B in the middle;

[0028] Figure 4 For Figure 1 The local amplification diagram of C in the middle;

[0029] Figure 5 Structure diagram of the embodiment of the utility model Figure 2 ;

[0030] Figure 6 Structure diagram of the embodiment of the utility model Figure 3 ;

[0031] Figure 7 For Figure 6 The local amplification diagram of D in the middle.

[0032] Cross plate 1, support plate 2, first servo motor 3, main transmission gear 4, second rack 5, first transmission plate 6, second sliding block 7, second sliding rail 8, second guide shaft 9, second rotating block 10, first sliding rail 11, first sliding block 12, fifth sliding block 13, fifth sliding rail 14, third sliding rail 15, third sliding block 16, first rotating block 17, first guide shaft 18, fourth sliding block 19, fourth sliding rail 20, face paper sensor 21, positioning support 22, strip-shaped hole 23, holding box plate 24, ninth sliding block 25, second servo motor 26, third rotating block 27, third guide shaft 28, second transmission plate 29, sixth sliding block 30, sixth sliding rail 31. DETAILED DESCRIPTION

[0033] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] As Figures 1 to 7 The deviation rectifying mechanism of the no-rag embryo box transportation device is shown in the drawings, and comprises a horizontal plate 1, and a set of support plates 2 is arranged at each end of the horizontal plate 1.

[0035] The end of each set of support plates 2 is in sliding connection with the end of the horizontal plate 1, and the support plates 2 can reciprocate along the axis direction of the horizontal plate 1. The end of the horizontal plate 1 is fixed with a fifth sliding rail 14, the axis direction of the fifth sliding rail 14 is parallel to the axis direction of the first sliding rail 11, the fifth sliding rail 14 is in sliding cooperation with a fifth sliding block 13, and the fifth sliding block 13 is fixedly installed at the end of the support plate 2. The support plate 2 can move relative to the horizontal plate 1, so that the interference point between the horizontal plate 1 and the support plate 2 during movement of the horizontal plate 1 is avoided.

[0036] One end of the horizontal plate 1 is in sliding connection with a first sliding block 12 through a first sliding rail 11, the first sliding rail 11 is fixed to the horizontal plate 1, the first sliding block 12 is rotatably connected with a second sliding block 7, the second sliding block 7 is in sliding connection with a second sliding rail 8, the axis direction of the first sliding rail 11 is perpendicular to the axis direction of the second sliding rail 8, the second sliding rail 8 is arranged in parallel to the axis direction of the support plate 2, and the second sliding block 7 is linked with a second driving mechanism. When the second driving mechanism controls the second sliding block 7 to move along the second sliding rail 8, the first sliding block 12 rotates around the second sliding block 7, and simultaneously moves along the first sliding rail 11.

[0037] The first sliding block 12 is fixedly connected with a second rotating block 10 through a screw, the second rotating block 10 is rotatably connected with a second guide shaft 9 through a bearing, the lower end of the second guide shaft 9 is connected with a first transmission plate 6, the lower side of the first transmission plate 6 is fixedly connected with the second sliding block 7 through a screw, and the side edge of the first transmission plate 6 is linked with the second driving mechanism. The second driving mechanism comprises a first servo motor 3, the body of the first servo motor 3 is fixed to a rack, the output end of the first servo motor 3 is linked with a main transmission gear 4, the main transmission gear 4 is in meshing transmission with a second rack 5, the second rack 5 is fixedly connected with the first transmission plate 6, and the second rack 5 is arranged in parallel to the second sliding rail 8.

[0038] The end of the support plate 2 away from the cross plate 1 is provided with a third sliding rail 15 fixed to the support plate 2, and the third sliding rail 15 is arranged along the axis direction parallel to the support plate 2. The third sliding rail 15 is slidably connected with a third sliding block 16, the third sliding block 16 is fixedly connected with a first rotating block 17 through a screw, the first rotating block 17 is rotatably connected with a first guide shaft 18 through a bearing, and the lower end of the first guide shaft 18 is connected with a sliding assembly.

[0039] The middle of the cross plate 1 is fixedly connected with a third rotating block 27 through a screw, the third rotating block 27 is rotatably connected with a third guide shaft 28 through a bearing, the lower end of the third guide shaft 28 is connected with a second transmission plate 29, the second transmission plate 29 is fixedly connected with a sixth sliding block 30 through a screw, the sixth sliding block 30 is slidably connected with a sixth sliding rail 31, and the sixth sliding rail 31 is fixed to the rack and arranged along the axis direction parallel to the second sliding rail 8. By arranging the third rotating block 27, the sixth sliding rail 31 and the sixth sliding block 30 in the middle of the cross plate 1, the center point of the cross plate 1 is guided during the adjustment of the position of the blank box, so that the cross plate 1 is prevented from moving irregularly, and it is ensured that the center point of the cross plate 1 is always in the axis direction of the sixth sliding rail 31, that is, the center point of the blank box is always in the axis direction of the sixth sliding rail 31 during the adjustment of the position of the blank box, and that the directions of the two sides of the blank box change until the blank box is consistent with the direction of the face paper.

[0040] The lower side of the support plate 2 is provided with two groups of face paper sensors 21 for detecting the positions of the side edges of the face paper, the face paper sensors 21 are connected with positioning supports 22, the positioning supports 22 are provided with strip-shaped holes 23, the support plate 2 is provided with a plurality of groups of screw holes, and the strip-shaped holes 23 and any group of screw holes are detachably connected through screws. The face paper sensors 21 detect the two sides of the face paper in real time (the face paper is located below the blank box), the first servo motor 3 automatically adjusts the parameters such as the rotating speed and direction according to the data of the face paper sensors 21, automatically adjusts the direction of the blank box, and until the blank box is consistent with the direction of the face paper. Meanwhile, the strip-shaped holes 23 are arranged, and the installation positions of the face paper sensors 21 are adjusted according to actual conditions.

[0041] Four groups of blank box holding plates 24 in a rectangular distribution are arranged between the two groups of support plates 2, the blank box holding plates 24 are connected with ninth sliding blocks 25, the ninth sliding blocks 25 are connected with belts, the belts are connected with pulleys, the pulleys are rotatably installed on the support plates 2, and the pulleys are connected with a second servo motor 26, and the body of the second servo motor 26 is fixed to the support plate 2. The four groups of blank box holding plates 24 in a rectangular distribution are used for shaping the flat paperboard into a blank box, after the blank box is pasted with the face paper, the second servo motor 26 transports the two through the belt, so as to facilitate the next forming and deviation correction work.

[0042] The adjustment principle of the single-side supporting plate 2 is as follows: first, the first servo motor 3 drives the first transmission plate 6 and the second sliding block 7 to move axially along the second sliding rail 8 through the main transmission gear 4 and the second rack 5, and the second guiding shaft 9 drives the second rotating block 10 to move axially along the second sliding rail 8 along with the first transmission plate 6. Then, the horizontal plate 1 can move axially along the first sliding rail 11 relative to the first sliding block 12 through the first sliding rail 11, and the horizontal plate 1 rotates around the second guiding shaft 9 under the action of the second rotating block 10 (the specific rotating direction depends on the rotating direction of the first servo motor 3), at this time, the horizontal movement and rotation of the horizontal plate 1 are both to avoid interference at this position of the horizontal plate 1, and also necessary for the adjustment of the supporting plate 2. At the same time, the end of the supporting plate 2 close to the horizontal plate 1 moves axially along the fifth sliding rail 14 through the fifth sliding block 13 (the specific moving direction depends on the rotating direction of the first servo motor 3); the other end of the supporting plate 2 moves axially along the third sliding rail 15 relative to the third sliding block 16 through the third sliding rail 15, and the other end of the supporting plate 2 rotates around the first guiding shaft 18 under the action of the first rotating block 17 (the specific rotating direction depends on the rotating direction of the first servo motor 3), and the lower end of the first guiding shaft 18 moves axially along the fourth sliding rail 20 through the fourth sliding block 19. When the above actions are completed, the adjustment of the direction of the embryo box can be completed. It should be noted that the two groups of supporting plates 2 can be adjusted simultaneously or unilaterally, and the specific situation needs to be selected automatically according to the actual situation.

[0043] The embodiment controls the movement of the second sliding block 7 through the precise second driving mechanism, and then drives the first sliding block 12 to rotate around the second sliding block 7 and move along the first sliding rail 11, thereby realizing the precise adjustment of the position of the supporting plate 2 (and the embryo box), greatly improving the positioning accuracy, and ensuring that the embryo box can be accurately corrected to the predetermined position each time. At the same time, the sliding connection and rotating connection are adopted, which reduces the direct friction between the components and reduces the risk of wear and failure. At the same time, since the precise second driving mechanism is adopted for control, the performance decline caused by long-term friction and wear is avoided, thereby enhancing the reliability and durability of the entire correction mechanism.

Claims

1. A correction mechanism for a cornerless embryo box transport device, characterized by: The horizontal plate is provided with a group of support plates at each end, the two groups of support plates are parallel to each other, the end of each group of support plates is slidably connected with the end of the horizontal plate, and the support plates can reciprocate along the axis direction of the horizontal plate, one end of the horizontal plate is slidably connected with a first sliding block through a first sliding rail, the first sliding rail is fixed to the horizontal plate, the first sliding block is rotatably connected with a second sliding block, the second sliding block is slidably connected with a second sliding rail, the axis direction of the first sliding rail is perpendicular to the axis direction of the second sliding rail, the second sliding rail is arranged along the axis direction parallel to the support plates, the second sliding block is connected with a second driving mechanism, when the second driving mechanism controls the second sliding block to move along the second sliding rail, the first sliding block rotates around the second sliding block, and simultaneously the first sliding block moves along the first sliding rail.

2. The jog mechanism for a no-corn corner blaster shipping device of claim 1, wherein: The end of the support plate away from the horizontal plate is provided with a third sliding rail, the third sliding rail is fixed to the support plate, and the third sliding rail is arranged along the axis direction parallel to the support plates, the third sliding rail is slidably connected with a third sliding block, the third sliding block is fixedly connected with a first rotating block through a screw, the first rotating block is rotatably connected with a first guide shaft through a bearing, and the lower end of the first guide shaft is connected with a sliding component.

3. The jog mechanism for a no-corn corner blaster shipping device of claim 2, wherein: The sliding component comprises a fourth sliding block connected with the first guide shaft, the fourth sliding block is slidably connected with a fourth sliding rail, and the fourth sliding rail is fixed to the rack.

4. The jog mechanism for a no-corn corner blaster shipping device of claim 1 wherein: The first sliding block is fixedly connected with a second rotating block through a screw, the second rotating block is rotatably connected with a second guide shaft through a bearing, the lower end of the second guide shaft is connected with a first transmission plate, the second sliding block is fixedly connected with the first transmission plate through a screw below the first transmission plate, and the side edge of the first transmission plate is connected with the second driving mechanism.

5. The jog mechanism for a no-corn box shipping device according to claim 4, wherein: The second driving mechanism comprises a first servo motor, the body of the first servo motor is fixed to the rack, the output end of the first servo motor is connected with a main transmission gear, the main transmission gear is in meshing transmission with a second rack, the second rack is fixedly connected with the first transmission plate, and the second rack is arranged along the axis direction parallel to the second sliding rail.

6. The jog mechanism for a no-corn corner blaster shipping device of claim 1, wherein: The end of the horizontal plate is fixedly connected with a fifth sliding rail, the axis direction of the fifth sliding rail is parallel to the axis direction of the first sliding rail, the fifth sliding rail is slidably connected with a fifth sliding block, and the fifth sliding block is fixedly installed at the end of the support plate.

7. The jog mechanism for a no-corn corner blaster shipping device of claim 6, wherein: The middle part of the horizontal plate is fixedly connected with a third rotating block through a screw, the third rotating block is rotatably connected with a third guide shaft through a bearing, the lower end of the third guide shaft is connected with a second transmission plate, the second transmission plate is fixedly connected with a sixth sliding block through a screw, the sixth sliding block is slidably connected with a sixth sliding rail, and the sixth sliding rail is fixed to the rack and arranged along the axis direction parallel to the second sliding rail.

8. The jog mechanism for a no-corn box shipping device according to any one of claims 1 to 6, wherein: The lower part of the support plate is provided with two groups of face paper sensors for detecting the position of the side edge of the face paper, the face paper sensors are connected with a positioning support, a strip-shaped hole is arranged on the positioning support, a plurality of groups of screw holes are arranged on the support plate, and the strip-shaped hole and any group of screw holes are detachably connected through a screw.

9. The jog mechanism for a no-corn corner blaster shipping device of claim 8, wherein: Between the two groups of support plates, four groups of box holding plates in rectangular distribution are arranged, the box holding plates are connected with the ninth sliding blocks, the ninth sliding blocks are connected with the belts, the belts are connected with the pulleys, the pulleys are rotatably installed on the support plates, and the pulleys are connected with the second servo motors, and the bodies of the second servo motors are fixed on the support plates.

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