Nano calcium carbonate conveying and stacking device

Abstract

The invention relates to the field of nano calcium carbonate production, in particular to a nano calcium carbonate conveying and stacking device. According to an existing device, in the stacking process, stacking is not neat and not uniform enough, collapse is likely to happen, and bagged nano calcium carbonate is likely to be damaged due to the impact force of stacking. A nano calcium carbonate conveying and stacking device comprises a movable frame and the like. Two moving wheel sets are rotatably connected to the lower portion of the moving frame, two first rotating rollers are rotatably connected to the upper portion of the moving frame, a placing belt is wound between the two first rotating rollers, a driving motor is fixedly connected to one side of the moving frame, and rotating shafts of the first rotating rollers are connected with the driving motor. A driving assembly is arranged between the two moving wheel sets. Each bag of bagged nano calcium carbonate separated from the inclined belt can be flatly placed on the ground from bottom to top in sequence under the limiting action of the horizontal placing mechanism and the surrounding baffle, so that each pile of bagged nano calcium carbonate is stacked more orderly and flatly, and the situation of collapse is not prone to occurring.

Description

Technical Field

[0001] The invention relates to the field of nano calcium carbonate production, in particular to a nano calcium carbonate conveying and stacking device. Background Art

[0002] In industrial production, bagged nano calcium carbonate is widely used, and its stacking process is crucial. Traditional stacking methods are inefficient and easily damage products, affecting quality. With the increase in production capacity, there is an urgent need for efficient and scientific stacking.

[0003] However, the existing devices do not stack neatly and evenly during the stacking process, and are prone to collapse, and the impact force of the stacking can easily damage the bagged nano calcium carbonate. Summary of the invention

[0004] In order to overcome the shortcomings of the background technology, the present invention provides a nano-calcium carbonate conveying and stacking device which can stack the nano-calcium carbonate in bags more neatly and evenly and can effectively buffer the nano-calcium carbonate in bags.

[0005] The technical implementation scheme of the present invention is: a nano-calcium carbonate conveying and stacking device, comprising a mobile frame, wherein the lower part of the mobile frame is rotatably connected to two mobile wheel groups, the upper part of the mobile frame is rotatably connected to two rollers one, a placement belt is wound between the two rollers one, one side of the mobile frame is fixedly connected to a driving motor, the rotating shaft of the roller one is connected to the driving motor, a driving component is arranged between the two mobile wheel groups, the driving component is used to connect and drive the two mobile wheel groups, one side of the mobile frame is provided with a lifting mechanism, the lifting mechanism is used to convey and lift each bag of nano-calcium carbonate, a limiting mechanism is arranged on the lifting mechanism, the limiting mechanism is used to limit the stacking of each bag of nano-calcium carbonate, and the upper part of the baffle is provided with a flattening mechanism, the flattening mechanism is used to make the bagged nano-calcium carbonate flat.

[0006] Furthermore, the lifting mechanism includes two support arms, a sliding wheel group is rotatably connected between the lower parts of the two support arms, a connecting frame is fixedly connected between the upper parts of the two support arms, a roller 2 is rotatably connected to the upper part of the connecting frame, a roller 2 is rotatably connected to the movable wheel group, an oblique belt is wound between the two rollers 2, and two transmission assemblies are connected between the two rollers 1 and the two rollers 2.

[0007] Furthermore, the limiting mechanism includes a baffle plate, which is fixedly connected to a side of the connecting frame away from the movable frame, and dual-axis motors are fixedly connected to both sides of the baffle plate. Mobile baffles are rotatably connected to both sides of the baffle plate, and the rotating shaft of the mobile baffle is connected to the output shaft of the dual-axis motor. A speed sensor is provided on one side of one of the support arms, and the speed sensor is used to detect the speed of the sliding wheel group.

[0008] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket. The tooth on the upper part of the groove is meshed with tooth on upper sprocket.

[0009] Furthermore, a deceleration mechanism is also included, which is arranged on the baffle plate and is used to buffer the falling and stacked nano calcium carbonate. The deceleration mechanism includes four brackets, two of which form a group, and the two groups of brackets are respectively fixedly connected to the two sides of the baffle plate. Each of the brackets is slidably connected with a sloped buffer block, which passes through the baffle plate. A buffer spring is connected between the sloped buffer block and the bracket. A centered sloped bucket is fixedly connected to the upper part of the baffle plate, and a sloped bucket is fixedly connected between the two transmission components on one side close to the movable frame.

[0010] Furthermore, it also includes a balancing mechanism, which is arranged at the lower part of the enclosing plate, and the balancing mechanism includes two concave panels, the two concave panels are slidably connected to the lower parts of the two movable baffles, and the lower parts of the two movable baffles are rotatably connected to a plurality of spherical wheels, two pressing long plates are slidably connected to both sides of the enclosing plate, the two pressing long plates form a group, and a connecting plate is slidably connected between the two pressing long plates of each group, a pressure spring is connected between the connecting plate and the pressing long plate, bent rods are fixedly connected to both sides of the concave panels, each of the bent rods is rotatably connected to a roller, a connecting rope is connected between the connecting plate and the concave panels, the connecting rope passes around the roller, a straight groove plate is fixedly connected to one side of each concave panel, and a bolt rod is fixedly connected to the lower part of each movable baffle, and the bolt rod passes through the straight groove plate.

[0011] The beneficial effects of the present invention are as follows: 1. Each bag of bagged nano calcium carbonate detached from the oblique belt will be stacked on the ground in a horizontal posture from bottom to top under the limiting action of the flattening mechanism and the baffle plate, and the baffle plate and the movable baffle plate can prevent the stacked bagged nano calcium carbonate from tipping over, so that each pile of bagged nano calcium carbonate is stacked more neatly and flatter, and is not prone to collapse.

[0012] 2. The bagged nano calcium carbonate is lifted by the oblique belt, and then after being separated from the oblique belt, the bagged nano calcium carbonate will first fall on the central inclined bucket, which will further correct the position of the bagged nano calcium carbonate, making the falling position of each bag of nano calcium carbonate more uniform. The bagged nano calcium carbonate passing through the central inclined bucket will continue to fall downward, and then the bagged nano calcium carbonate will successively squeeze the inclined buffer blocks on both sides during the falling process. The squeezed inclined buffer blocks will move horizontally, compressing the buffer springs, so that the inclined buffer blocks can slow down the falling speed of the bagged nano calcium carbonate, buffer it, and make the bagged nano calcium carbonate less likely to be damaged.

[0013] 3. The bagged nano calcium carbonate will fall onto the concave panel. The shape of the concave panel will have a central gathering effect on the bagged nano calcium carbonate, so that the bagged nano calcium carbonate will not easily have uneven weight distribution after falling and stacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the movable frame and the movable wheel set of the present invention.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the speed reduction mechanism and the horizontal placement mechanism of the present invention.

[0019] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged three-dimensional structure at point A in the middle.

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the baffle plate and the speed reduction mechanism of the present invention.

[0021] Figure 8 It is a schematic diagram of the three-dimensional structure of the balancing mechanism of the present invention.

[0022] Fig. 9 It is a schematic diagram of the separated three-dimensional structure of the concave panel and the spherical wheel of the present invention.

[0023] The meanings of the reference numerals in the figure are: 1_mobile frame, 2_mobile wheel group, 31_roller one, 32_placing belt, 33_driving motor, 34_driving assembly, 4_lifting mechanism, 41_support arm, 42_sliding wheel group, 43_connecting frame, 44_roller two, 45_oblique belt, 46_transmission assembly, 5_limiting mechanism, 51_enclosing plate, 53_dual-axis motor, 54_mobile baffle, 55_speed sensor, 8_laying mechanism, 81_oblique support plate, 82_guide long roller, 83_support table, 84_high-speed electric push rod, 85_sliding frame Frame, 86_rotating roller, 87_connecting bent plate, 88_convex top rod, 89_cross bar, 810_racket rod, 811_torsion spring, 812_round rod, 813_light sensor, 6_deceleration mechanism, 61_bracket, 62_inclined buffer block, 63_buffer spring, 64_centering inclined bucket, 65_placing inclined bucket, 7_balancing mechanism, 71_concave panel, 72_spherical wheel, 73_pressing long board, 74_connecting plate, 75_pressure spring, 76_bent rod, 77_roller, 78_connecting rope, 79_straight groove plate, 710_bolt rod. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1

[0026] A nano calcium carbonate conveying and stacking device, such as Figure 1-9As shown, it includes a mobile frame 1, the lower part of the mobile frame 1 is rotatably connected to two mobile wheel groups 2, the upper part of the mobile frame 1 is rotatably connected to two rollers 31, a placement belt 32 is wound between the two rollers 31, one side of the mobile frame 1 is fixedly connected to a drive motor 33, the rotating shaft of the roller 31 is connected to the drive motor 33, a drive component 34 is arranged between the two mobile wheel groups 2, the drive component 34 is used to connect and drive the two mobile wheel groups 2, one side of the mobile frame 1 is provided with a lifting mechanism 4, the lifting mechanism 4 is used to transport and lift each bag of nano calcium carbonate, the lifting mechanism 4 is provided with a limiting mechanism 5, the limiting mechanism 5 is used to limit the stacking of each bag of nano calcium carbonate, and the upper part of the enclosure plate 51 is provided with a flattening mechanism 8, the flattening mechanism 8 is used to make the bagged nano calcium carbonate flat.

[0027] The lifting mechanism 4 includes two support arms 41, a sliding wheel group 42 is rotatably connected between the lower parts of the two support arms 41, a connecting frame 43 is fixedly connected between the upper parts of the two support arms 41, a roller 2 44 is rotatably connected to the upper part of the connecting frame 43, a roller 2 44 is rotatably connected to the moving wheel group 2, an oblique belt 45 is wound between the two rollers 2 44, and two transmission components 46 are connected between the two rollers 1 31 and the two rollers 2 44.

[0028] The limiting mechanism 5 includes a baffle plate 51, which is fixedly connected to the side of the connecting frame 43 away from the movable frame 1, and dual-axis motors 53 are fixedly connected on both sides of the baffle plate 51. Mobile baffles 54 are rotatably connected on both sides of the baffle plate 51, and the rotating shaft of the mobile baffle 54 is connected to the output shaft of the dual-axis motor 53. A speed sensor 55 is provided on one side of one of the support arms 41, and the speed sensor 55 is used to detect the speed of the sliding wheel group 42.

[0029] The flat-laying mechanism 8 includes two inclined support plates 81, and the two inclined support plates 81 are fixedly connected to the upper part of the enclosure plate 51. A plurality of long guide rollers 82 are rotatably connected between the two inclined support plates 81. Two support platforms 83 are fixedly connected to the upper part of the enclosure plate 51, and high-speed electric push rods 84 are fixedly connected to the two support platforms 81. Two sliding frames 85 are slidably connected to the upper part of the enclosure plate 51, and a plurality of rotating rollers 86 are rotatably connected to the two sliding frames 85. The high-speed electric push rods 84 are connected to the sliding frames. A connecting bent plate 87 is connected, and two convex top rods 88 are slidably connected to one side of the baffle plate 51. A cross bar 89 is fixedly connected to the upper part of the baffle plate 51, and a plurality of racket rods 810 are rotatably connected to the cross bar 89. A torsion spring 811 is connected between the racket rod 810 and the cross bar 89. A round rod 812 is fixedly connected to one side of each of the racket rods 810, and the round rod 812 is in contact with the convex top rod 88. A light sensor 813 is provided on the upper part of the baffle plate 51, and the light sensor 813 is used to control the high-speed electric push rod 84.

[0030] In the actual stacking work, the nano calcium carbonate will be packed and stored after it is produced, and then each bag of nano calcium carbonate will be stacked and stored. First, the operator starts the drive motor 33, and the drive motor 33 will drive the roller 1 31 to rotate, and drive the roller 2 44 to rotate together through the transmission component 46, so that the placement belt 32 and the diagonal belt 45 move, and then the operator will place a bag of nano calcium carbonate on the placement belt 32 each time, and then the placement belt 32 will transport the nano calcium carbonate to the diagonal belt 45, and then the diagonal belt 45 will gradually transport the bagged nano calcium carbonate upward, so that the bagged nano calcium carbonate will slide along the diagonal support plate 81 and the long guide roller 82 to the rotating roller 86 and the two sliding frames 85 after leaving the diagonal belt 45, and then the bagged The nano calcium carbonate will slide due to the inertia of sliding until it contacts the inner wall of one side of the baffle plate 51, and the bagged nano calcium carbonate will cover the light sensor 813, so that the light sensor 813 is triggered. The light sensor 813 is triggered to control the high-speed electric push rod 84 to extend rapidly. The rapid extension of the high-speed electric push rod 84 will drive the two sliding frames 85 to withdraw to both sides. When the two sliding frames 85 are withdrawn horizontally to both sides, they will drive the two convex top rods 88 to move together. The two convex top rods 88 will squeeze each round rod 812 in turn to swing upward at a certain angle. The upward swing of the round rod 812 will drive the racket 810 to swing downward. The torsion spring 811 is twisted, and the downward swing of the racket 810 can perform surface treatment on the bagged nano calcium carbonate on the sliding frame 85. The two sliding frames 85 are completely removed and the bagged nano-calcium carbonate falls downwards. Each bagged nano-calcium carbonate detached from the oblique belt 45 is stacked on the ground in a horizontal posture from bottom to top under the limiting action of the flattening mechanism 8 and the baffle plate 51. The baffle plate 51 and the movable baffle plate 54 can prevent the stacked bagged nano-calcium carbonate from tipping over. When the bagged nano-calcium carbonate is stacked to a certain amount, the operator stops placing the nano-calcium carbonate and then starts the driving assembly 34. The driving assembly 34 drives the moving wheel group 2 and the moving frame 1 to move horizontally, and then drives the sliding wheel group 42 to move horizontally together. The movement of the sliding wheel group 42 triggers the speed sensor 55. Then, the speed sensor 55 is triggered to control the extension of the telescopic rod of the dual-axis motor 53, and the dual-axis motor 53 will drive the two movable baffles 54 to rotate 90° and open. Then, after the movable frame 1 and the enclosure plate 51 move horizontally together, the nano calcium carbonate stacked on the ground will separate from the enclosure plate 51. After the movable frame 1 and the enclosure plate 51 move a certain distance, the operator turns off the drive assembly 34, and the movable frame 1 stops moving, so that the speed sensor 55 is not triggered, and the two movable baffles 54 rotate in the opposite direction to reset. Then, the operator starts to place the bagged nano calcium carbonate on the placement belt 32 to stack the next pile of bagged nano calcium carbonate, so that each pile of bagged nano calcium carbonate is stacked more neatly and is not prone to collapse.

[0031] Example 2

[0032] On the basis of Example 1, Figure 6-7 As shown, a deceleration mechanism 6 is also included, and the deceleration mechanism 6 is arranged on the baffle plate 51. The deceleration mechanism 6 is used to buffer the falling and stacked nano calcium carbonate. The deceleration mechanism 6 includes four brackets 61, two of the brackets 61 form a group, and the two groups of the brackets 61 are respectively fixedly connected to the two sides of the baffle plate 51, and each of the brackets 61 is slidably connected with a sloped buffer block 62, and the sloped buffer block 62 passes through the baffle plate 51. A buffer spring 63 is connected between the sloped buffer block 62 and the bracket 61, and a centered sloped bucket 64 is fixedly connected to the upper part of the baffle plate 51, and a placement sloped bucket 65 is fixedly connected between the two transmission components 46 close to the side of the mobile frame 1.

[0033] The operator can place the bagged nano-calcium carbonate on the placement belt 32 by placing the inclined bucket 65. Placing the inclined bucket 65 can ensure that the placement position of each bagged nano-calcium carbonate is uniform. When the bagged nano-calcium carbonate is lifted by the oblique belt 45 and then separated from the oblique belt 45, the bagged nano-calcium carbonate will first fall on the central inclined bucket 64. The central inclined bucket 64 will further correct the position of the bagged nano-calcium carbonate, so that the falling position of each bag of nano-calcium carbonate is more uniform. The bagged nano-calcium carbonate passing through the central inclined bucket 64 will continue to fall downward, and then the bagged nano-calcium carbonate will successively squeeze the inclined buffer blocks 62 on both sides during the falling process. The squeezed inclined buffer blocks 62 will move horizontally to compress the buffer springs 63. In this way, the inclined buffer blocks 62 can slow down the falling speed of the bagged nano-calcium carbonate and buffer it, so that the bagged nano-calcium carbonate is not easily damaged.

[0034] Example 3

[0035] On the basis of Example 2, Figure 8-9As shown, a balancing mechanism 7 is also included, and the balancing mechanism 7 is arranged at the lower part of the enclosure plate 51. The balancing mechanism 7 includes two concave panels 71, and the two concave panels 71 are slidably connected to the lower parts of the two movable baffles 54. The lower parts of the two movable baffles 54 are rotatably connected to a plurality of spherical wheels 72. Two pressing long plates 73 are slidably connected to both sides of the enclosure plate 51. The two pressing long plates 73 form a group, and a connecting plate 74 is slidably connected between the two pressing long plates 73 of each group. A pressure spring 75 is connected between the connecting plate 74 and the pressing long plate 73, and bent rods 76 are fixedly connected on both sides of the concave panel 71. A roller 77 is rotatably connected to each of the bent rods 76. A connecting rope 78 is connected between the connecting plate 74 and the concave panel 71, and the connecting rope 78 passes around the roller 77. A straight groove plate 79 is fixedly connected to one side of each concave panel 71, and a bolt rod 710 is fixedly connected to the lower part of each movable baffle 54, and the bolt rod 710 passes through the straight groove plate 79.

[0036] When the bagged nano calcium carbonate falls downward through the baffle plate 51, the bagged nano calcium carbonate will fall onto the concave panel 71. The shape of the concave panel 71 will have a central gathering effect on the bagged nano calcium carbonate, so that the bagged nano calcium carbonate will not easily have uneven weight distribution after it falls and is stacked. Then, after the stacking is completed, when the two movable baffles 54 are rotated 90° to open, the two movable baffles 54 will drive the two bolt rods 710 to rotate 90° as well. The bolt rod 710 rotates 90° to drive the straight groove plate 79 and the concave panel 71 to withdraw to both sides together, so that the stacking The nano-calcium carbonate on the two concave panels 71 falls to the ground. When the two concave panels 71 move horizontally in a direction away from each other, the two concave panels 71 will pull the two connecting plates 74 to move horizontally in a direction close to each other through the connecting rope 78. The horizontal movement of the two connecting plates 74 in a direction close to each other will drive the pressing long plate 73 to be squeezed into the baffle plate 51 through the pressure spring 75. The inwardly squeezed pressing long plate 73 will press against the two sides of the nano-calcium carbonate stacked in the baffle plate 51, so that when the two concave panels 71 are withdrawn, the bagged nano-calcium carbonate will not be driven to move.

[0037] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principle and spirit of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the present invention, but the scope of protection is limited by the content of the claims.

Claims

1. A nano calcium carbonate conveying and stacking device, characterized in that: The invention comprises a moving frame (1), wherein the lower part of the moving frame (1) is rotatably connected to two moving wheel groups (2), the upper part of the moving frame (1) is rotatably connected to two rollers (31), a placement belt (32) is wound between the two rollers (31), a driving motor (33) is fixedly connected to one side of the moving frame (1), the rotating shaft of the roller (31) is connected to the driving motor (33), a driving component (34) is arranged between the two moving wheel groups (2), and the driving component (34) is arranged between the two moving wheel groups (2). The moving assembly (34) is used to connect and drive the two moving wheel groups (2); a lifting mechanism (4) is provided on one side of the moving frame (1); the lifting mechanism (4) is used to transport and lift each bag of nano-calcium carbonate; a limiting mechanism (5) is provided on the lifting mechanism (4); the limiting mechanism (5) is used to limit the stacking of each bag of nano-calcium carbonate; a flat laying mechanism (8) is provided on the upper part of the enclosure plate (51); the flat laying mechanism (8) is used to lay the bagged nano-calcium carbonate flat.

2. A nano calcium carbonate conveying and stacking device according to claim 1, characterized in that: The lifting mechanism (4) comprises two support arms (41), a sliding wheel group (42) is rotatably connected between the lower parts of the two support arms (41), a connecting frame (43) is fixedly connected between the upper parts of the two support arms (41), a second roller (44) is rotatably connected to the upper part of the connecting frame (43), a second roller (44) is rotatably connected to the movable wheel group (2), an oblique belt (45) is wound between the two second rollers (44), and two transmission components (46) are connected between the two first rollers (31) and the two second rollers (44).

3. A nano calcium carbonate conveying and stacking device according to claim 2, characterized in that: The limiting mechanism (5) comprises a baffle plate (51), the baffle plate (51) being fixedly connected to a side of the connecting frame (43) away from the moving frame (1), both sides of the baffle plate (51) being fixedly connected to a dual-axis motor (53), both sides of the baffle plate (51) being rotatably connected to a moving baffle plate (54), the rotating shaft of the moving baffle plate (54) being connected to the output shaft of the dual-axis motor (53), and a rotation speed sensor (55) being provided on one side of one of the support arms (41), the rotation speed sensor (55) being used to detect the rotation speed of the sliding wheel group (42).

4. A nano calcium carbonate conveying and stacking device according to claim 3, characterized in that: The flat placement mechanism (8) comprises two inclined support plates (81), the two inclined support plates (81) are fixedly connected to the upper part of the enclosure plate (51), a plurality of long guide rollers (82) are rotatably connected between the two inclined support plates (81), two support platforms (83) are fixedly connected to the upper part of the enclosure plate (51), a high-speed electric push rod (84) is fixedly connected to the two support platforms (81), two sliding frames (85) are slidably connected to the upper part of the enclosure plate (51), a plurality of rotating rollers (86) are rotatably connected to the two sliding frames (85), and a connecting rod (84) is connected to the sliding frame. A bending plate (87) is connected, one side of the enclosure plate (51) is slidably connected to two convex top rods (88), the upper part of the enclosure plate (51) is fixedly connected to a cross bar (89), a plurality of slap rods (810) are rotatably connected to the cross bar (89), a torsion spring (811) is connected between the slap rod (810) and the cross bar (89), one side of each slap rod (810) is fixedly connected to a round rod (812), the round rod (812) is in contact with the convex top rod (88), and a light sensor (813) is arranged on the upper part of the enclosure plate (51), and the light sensor (813) is used to control the high-speed electric push rod (84).

5. A nano calcium carbonate conveying and stacking device according to claim 4, characterized in that: The invention also comprises a deceleration mechanism (6), wherein the deceleration mechanism (6) is arranged on the enclosure plate (51), and the deceleration mechanism (6) is used for buffering the falling and stacked nano calcium carbonate. The deceleration mechanism (6) comprises four brackets (61), and two of the brackets (61) form a group. The two groups of brackets (61) are respectively fixedly connected to the two sides of the enclosure plate (51). Each of the brackets (61) is slidably connected to a slope buffer block (62), and the slope buffer block (62) passes through the enclosure plate (51). A buffer spring (63) is connected between the slope buffer block (62) and the bracket (61). A central slope bucket (64) is fixedly connected to the upper part of the enclosure plate (51), and a placement slope bucket (65) is fixedly connected between the two transmission components (46) on one side close to the mobile frame (1).

6. A nano calcium carbonate conveying and stacking device according to claim 5, characterized in that: The invention also comprises a balancing mechanism (7), wherein the balancing mechanism (7) is arranged at the lower part of the enclosure plate (51), and the balancing mechanism (7) comprises two concave panels (71), wherein the two concave panels (71) are both slidably connected to the lower parts of the two movable baffles (54), and the lower parts of the two movable baffles (54) are both rotatably connected to a plurality of spherical wheels (72), and two pressing long plates (73) are slidably connected to both sides of the enclosure plate (51), and the two pressing long plates (73) form a group, and a connecting plate (74) is slidably connected between the two pressing long plates (73) of each group, and the connecting plate (74) is 4) is connected with a pressure spring (75) between the pressing long plate (73), the concave panel (71) is fixedly connected with a bending rod (76) on both sides, each of the bending rods (76) is rotatably connected with a roller (77), a connecting rope (78) is connected between the connecting plate (74) and the concave panel (71), the connecting rope (78) passes around the roller (77), each of the concave panels (71) is fixedly connected with a straight groove plate (79) on one side, and each of the movable baffles (54) is fixedly connected with a bolt rod (710) at the lower part, and the bolt rod (710) passes through the straight groove plate (79).

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