A polycarbonate sheet stacking device

Abstract

The application relates to the field of plate stacking, in particular to a polycarbonate plate stacking device. The existing stacking device is inconvenient for sequentially stacking plates, the stacked plates are not neat enough, are prone to tilting and even toppling, and when the stacked plates are transferred, the plates are prone to shaking due to excessive frictional resistance, and the surface of the plates is prone to damage. A polycarbonate plate stacking device comprises a bottom plate and the like; the bottom plate is placed on the ground, one side of the bottom plate is provided with an inclined plane, the side, away from the inclined plane, of the bottom plate is fixedly connected with two support frames, and a plurality of rolling shafts are rotatably connected between the two support frames. The plates are first corrected in position, then guided and stacked one by one, and finally pushed out uniformly, so that the stacking of the plates is more convenient, and the stacked plates are more neat and are not prone to tilting and even toppling.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of plate stacking, in particular to a polycarbonate plate stacking device. BACKGROUND

[0002] Polycarbonate plate, also known as PC plate, is a kind of high-performance thermoplastic plate, which is widely used in fields such as construction, agriculture and industry. It has very reliable processability and is suitable for various shape designs. After the plate is produced, it is usually stacked and stored.

[0003] However, the existing stacking device is not convenient for stacking the plates one by one, and the stacked plates are not neat enough, which can easily tilt or even fall over. When transferring the stacked plates, the friction resistance is too large, which can cause the plates to shake, and the surface of the plates can also be damaged. SUMMARY

[0004] In order to overcome the shortcomings in the background art, the present application provides a polycarbonate plate stacking device which is more convenient for stacking plates, more neat, and can reduce the resistance during transfer, so that the stacked plates are not easily shaken, and the surface of the plates is also protected.

[0005] The technical scheme is: a polycarbonate plate stacking device, comprising a bottom plate, the bottom plate is placed on the ground, one side of the bottom plate is provided with an inclined surface, the side of the bottom plate away from the inclined surface is fixedly connected with two support frames, a plurality of rollers are rotatably connected between the two support frames, the heights of the plurality of rollers gradually decrease towards the inclined surface on the bottom plate, the upper parts of the two support frames are fixedly connected with guide rods, the side surfaces of the guide rods are trapezoidal structures, the middle part of the bottom plate is fixedly connected with a funnel frame, the bottom plate is fixedly connected with a sliding rail, the sliding rail is slidingly connected with an electric sliding block, the bottom plate is provided with a stacking mechanism, the stacking mechanism is in contact with the funnel frame, the stacking mechanism is used for stacking a plurality of plates, the bottom plate is provided with a material transferring mechanism, the material transferring mechanism is used for transferring the stacked plates, the funnel frame is provided with an isolation mechanism, the isolation mechanism is used for isolating the material during transfer.

[0006] Further, the stacking mechanism comprises two vertical columns, the two vertical columns are fixedly connected to the bottom plate, each vertical column is slidingly connected with a sliding frame, a supporting spring is connected between the sliding frame and the vertical column, a stacking plate is fixedly connected between the two sliding frames, a plurality of square holes are formed in the stacking plate, a plurality of bent rods are fixedly connected to the bottom plate, a roller is slidingly connected to each bent rod, a bent arm is fixedly connected to the electric sliding block, and a pushing frame is fixedly connected to the end of the bent arm away from the electric sliding block.

[0007] Further, the material transferring mechanism comprises two support plate frames, both of which are fixedly connected to the bottom plate, six supporting blocks are placed on the bottom plate, the lower surface of the supporting blocks is horizontal, three supporting blocks on the same side form a group, each supporting block is fixedly connected with a swing frame, three swing frames on the same side form a group, three swing frames in each group are rotatably connected with a top plate frame, the upper surface of the top plate frame is lower than the upper surface of the support plate frame, the top plate frame is in contact with the support plate frame, one side of each swing frame is fixedly connected with a moving wheel, four limiting blocks are fixedly connected to the bottom plate, two limiting blocks form a group, two limiting blocks in each group are slidably connected with a rack rod, one side of each top plate frame away from the supporting frame is rotatably connected with a rotating handle, both sides of the rotating handle are fixedly connected with a gear one, one side of each swing frame is fixedly connected with a gear two, each gear two and the gear one are in mesh with the rack rod on the same side.

[0008] Further, the isolation mechanism comprises four hanging plates, all of which are fixedly connected to one side of the outer wall of the funnel frame, two hanging plates form a group, the lower part of two hanging plates in each group are slidably connected with a sliding clamping block, a return spring is connected between the sliding clamping block and the hanging plate, the lower part of two hanging plates are fixedly connected with a side rod, the lower part of each side rod is rotatably connected with a swing rod, a guide groove is formed in the swing rod, the lower part of each sliding clamping block is fixedly connected with a connecting rod, the connecting rod is located in the guide groove on the swing rod, the side of the stacking plate close to the hanging plate is fixedly connected with two top blocks, two inclined baffles are slidably connected to the supporting frames, the lower part of one end of two inclined baffles close to the stacking plate is fixedly connected with an inclined block, a pressure spring is connected between the inclined baffle and the supporting frame, the side of the pushing frame close to the electric sliding block is fixedly connected with two right-angle push rods, the right-angle push rods are in contact with one end of the inclined baffle.

[0009] Further, the resistance reduction mechanism is arranged on the bottom plate, and is used for reducing the resistance when the board moves during the stacking of the stacked boards; the resistance reduction mechanism comprises two guide plates, a sliding long rod is slidably connected to each of the guide plates, a plurality of inclined protrusions are arranged on the sliding long rod, a return spring is connected between the sliding long rod and the guide plate, four limiting plates are fixedly connected to the bottom plate, two of the limiting plates form a group, the two sliding long rods pass through the two groups of limiting plates respectively, a plurality of straight rods are fixedly connected to the bottom plate, a sliding plate is slidably connected to each of the straight rods, a tension spring is connected between the sliding plate and the straight rod, two of the sliding plates form a group, a pulley is rotatably connected between the two sliding plates of each group, and a cross bar is fixedly connected between the two sliding plates of each group and in contact with the sliding long rod.

[0010] The board falls down to the funnel frame along the roller, the guide rod corrects the position of the board when the board moves on the roller, and the board does not tilt, the board falls down to the stacking plate from the funnel frame, due to the gravity, the stacking plate and the sliding frame move downward by a distance, the supporting spring is compressed, and thus each board is stacked together, the horizontally pushed board of the pushing frame moves to the two support plate frames, then the operator swings the rotating handle downward by 90°, the rotating handle swings downward by 90° drives the gear to rotate by 90°, the gear rotates by 90° drives the rack rod to horizontally move and drives the gear two to rotate by 90°, the gear two rotates by 90° drives the swing frame and the moving wheel to rotate by 90°, thus the support block originally supporting the top plate frame is replaced by the moving wheel, the moving wheel supporting the top plate frame lifts the top plate frame upward by a certain height, and the upper surface of the top plate frame is higher than the upper surface of the support plate frame, thus the board on the support plate frame is transferred to the top plate frame, then the operator drags the rotating handle to pull the board away along the slope of the bottom plate, the board is first corrected in position, then is guided and stacked, and finally is uniformly pushed out, so that the stacking of the board is more convenient, and the stacked board is more neat and is not easy to tilt or fall down.

[0011] 2, push the frame with the electric slider together horizontally move the stacked plate out of the stack of plate, the plate will move to a number of pulleys, when the electric slider moves a distance, the electric slider will contact with the sliding long rod one end, and extrude the sliding long rod together horizontally move a distance, the sliding long rod horizontal movement a distance will be under the guide of the inclined convex, make the tension spring reset driven crossbar, pulley and sliding plate together down, finally make the pulley upper surface lower than the support plate frame upper surface, then the plate falls to the support plate frame, the electric slider horizontal movement reset, so first use pulley to lift the bottom of the plate, so that the plate is pushed and will not be due to resistance and shaking, also protect the bottom surface of the plate, then the pulley is collected, so that the plate will not always slide on the pulley, make the plate more stable after being pushed out. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the schematic diagram of the three-dimensional structure of the present application.

[0013] Figure 2 It is the schematic diagram of the three-dimensional structure of the present application Figure 1 It is the schematic diagram of the three-dimensional structure of the present application

[0014] Figure 3 It is the schematic diagram of the three-dimensional structure of the present application

[0015] Figure 4 It is the schematic diagram of the three-dimensional structure of the present application

[0016] Figure 5 It is the schematic diagram of the three-dimensional structure of the present application

[0017] Figure 6 It is the schematic diagram of the three-dimensional structure of the present application

[0018] Figure 7 It is the schematic diagram of the three-dimensional structure of the present application Figure 6 It is the schematic diagram of the three-dimensional structure of the present application

[0019] Figure 8 It is the schematic diagram of the three-dimensional structure of the present application

[0020] Figure 9 It is the schematic diagram of the three-dimensional structure of the present application

[0021] Figure 10 It is the schematic diagram of the three-dimensional structure of the present application

[0022] Reference numerals: 1_Base plate, 21_Support frame, 22_Roller, 23_Guide rod, 3_Funnel frame, 41_Slide rail, 42_Electric slider, 51_Column, 52_Sliding frame, 53_Support spring, 54_Stacking plate, 55_Bent rod, 56_Roller, 57_Bent arm, 58_Pushing frame, 61_Support plate frame, 62_Support block, 63_Swing frame, 64_Top plate frame, 65_Moving wheel, 66_Limit block, 67_Rack and pinion, 68_Rotating handle 69_Gear 1, 610_Gear 2, 71_Hanging plate, 72_Sliding block, 73_Reset spring, 74_Side rod, 75_Swing rod, 76_Connecting rod, 77_Top block, 78_Inclined baffle, 781_Inclined block, 79_Pressure spring, 710_Right-angle push rod, 81_Guide plate, 82_Sliding long rod, 83_Return spring, 84_Limiting plate, 85_Straight rod, 86_Sliding plate, 87_Tension spring, 88_Pulley, 89_Horizontal rod. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example 1

[0025] A polycarbonate sheet stacking device, such as Figures 1-10 As shown, the system includes a base plate 1 placed on the ground. One side of the base plate 1 has an inclined surface. Two support frames 21 are fixedly connected to the side of the base plate 1 away from the inclined surface. Several rollers 22 are rotatably connected between the two support frames 21, with the height of the rollers 22 decreasing sequentially towards the inclined surface of the base plate 1. Guide rods 23 are fixedly connected to the upper part of each support frame 21, and the sides of the guide rods 23 have a trapezoidal structure. A funnel frame 3 is fixedly connected to the middle of the base plate 1. A slide rail 41 is fixedly connected to the base plate 1, and an electric slider 42 is slidably connected to the slide rail 41. A stacking mechanism is provided on the base plate 1, which contacts the funnel frame 3. The stacking mechanism is used to stack several pieces of material. A material transfer mechanism is provided on the base plate 1, which is used to transfer the stacked material. An isolation mechanism is provided on the funnel frame 3, which is used to isolate the material during material transfer.

[0026] The stacking mechanism comprises two upright columns 51, both of which are fixedly connected to the bottom plate 1, each of the upright columns 51 is slidably connected with a sliding frame 52, the sliding frame 52 is connected with the upright column 51 with a supporting spring 53, the two sliding frames 52 are fixedly connected with a stacking plate 54, the stacking plate 54 is provided with a plurality of square holes, the bottom plate 1 is fixedly connected with a plurality of bent rods 55, each of the bent rods 55 is slidably connected with a roller 56, the electric sliding block 42 is fixedly connected with a bent arm 57, the bent arm 57 is fixedly connected with a pushing frame 58 at an end away from the electric sliding block 42.

[0027] The material rotating mechanism comprises two support plate frames 61, both of which are fixedly connected to the bottom plate 1, six supporting blocks 62 are placed on the bottom plate 1, the lower surface of the supporting block 62 is in a horizontal state, three supporting blocks 62 on the same side form a group, each of the supporting blocks 62 is fixedly connected with a swing frame 63, three swing frames 63 on the same side form a group, three swing frames 63 in each group are rotatably connected with a top plate frame 64, the upper surface of the top plate frame 64 is lower than the upper surface of the support plate frame 61, the top plate frame 64 is in contact with the support plate frame 61, each of the swing frames 63 is fixedly connected with a moving wheel 65 on one side, four limiting blocks 66 are fixedly connected to the bottom plate 1, two limiting blocks 66 form a group, each of the two limiting blocks 66 is slidably connected with a rack rod 67 between the two limiting blocks 66, each of the top plate frames 64 is rotatably connected with a rotating handle 68 on a side away from the support frame 21, the rotating handle 68 is fixedly connected with a gear one 69 on both sides, each of the swing frames 63 is fixedly connected with a gear two 610 on one side, each of the gear two 610 and the gear one 69 is engaged with the rack rod 67 on the same side.

[0028] The isolation mechanism comprises four hanging plates 71, four hanging plates 71 are fixedly connected to one side of the outer wall of the funnel frame 3, two hanging plates 71 are a group, sliding clamping blocks 72 are slidingly connected between the lower parts of the two hanging plates 71 in each group, reset springs 73 are connected between the sliding clamping blocks 72 and the hanging plates 71, side rods 74 are fixedly connected to the lower parts of two hanging plates 71, swinging rods 75 are rotatably connected to the lower parts of each side rod 74, guide grooves are formed in the swinging rods 75, connecting rods 76 are fixedly connected to the lower parts of each sliding clamping block 72, the connecting rods 76 are located in the guide grooves in the swinging rods 75, two top blocks 77 are fixedly connected to one side of the stacking plate 54 close to the hanging plates 71, inclined baffles 78 are slidingly connected to the two support frames 21, inclined blocks 781 are fixedly connected to the lower parts of one ends of the two inclined baffles 78 close to the stacking plate 54, the sliding clamping blocks 72 are used for clamping the inclined blocks 781 after horizontal movement, pressure springs 79 are connected between the inclined baffles 78 and the support frames 21, two right-angle push rods 710 are fixedly connected to one side of the pusher frame 58 close to the electric sliding block 42, and the right-angle push rods 710 are in contact with one end of the inclined baffles 78.

[0029] In actual work, the polycarbonate plate is produced on the production line, and after being conveyed by the conveying belt, it continues to be stacked. Each produced plate is conveyed by the conveying belt and falls onto the roller 22 at a certain interval. Since the heights of the several rollers 22 decrease in turn, the plate will roll down along the roller 22 and fall into the funnel frame 3. The guide rod 23 will correct the position of the plate when it moves on the roller 22, and the plate will not be skewed. The plate falls from the funnel frame 3 to the stacking plate 54. Due to the force of gravity, each time a plate falls onto the stacking plate 54, the stacking plate 54 and the sliding frame 52 will move downward by a distance, and the supporting spring 53 will be compressed. In this way, each plate is stacked together. When the plate falling onto the stacking plate 54 gradually increases, the sliding frame 52 moves downward to the lowest position, the sliding frame 52 contacts the bottom plate 1, and the upper surface of the stacking plate 54 is flush with the lower surface of the pushing frame 58. The roller 56 will be located in the square hole on the stacking plate 54, and the upper surface of the roller 56 is higher than the upper surface of the stacking plate 54. Therefore, when the stacking plate 54 moves downward to the lowest position, the plate on the stacking plate 54 will contact the several rollers 56. Then, the electric sliding block 42 is started, and the electric sliding block 42 drives the bent arm 57 and the pushing frame 58 to move horizontally together. The pushing frame 58 pushes the stacked plate on the roller 56 out, and the pushing frame 58 is always in contact with the stacking plate 54, so that the stacking plate 54 will not rebound upward. The plate will be horizontally pushed to the two support plate frames 61. When the pushing frame 58 moves horizontally, the inclined baffle 78 and the inclined block 781 move together, the pressure spring 79 is compressed, and then the inclined baffle 78 and the inclined block 781 press the sliding clamping block 72 to move downward by a distance, the reset spring 73 is compressed, the inclined baffle 78 and the inclined block 781 continue to move horizontally, the sliding clamping block 72 is reset upward to clamp the inclined block 781, so that the inclined baffle 78 cannot be reset and blocks the plate falling into the funnel frame 3. After the electric sliding block 42 drives the pushing frame 58 to push out the stacked plate, the electric sliding block 42 drives the pushing frame 58 to reset together. After resetting, the pushing frame 58 is separated from the stacking plate 54, and then the supporting spring 53 resets to drive the stacking plate 54 to reset upward. The upward resetting of the stacking plate 54 drives the top block 77 to move upward together. The upward movement of the top block 77 presses the swing rod 75, so that the end of the swing rod 75 close to the connecting rod 76 swings upward, which makes the end of the swing rod 75 close to the connecting rod 76 swing downward and drives the sliding clamping block 72 to move downward, so that the sliding clamping block 72 no longer clamps the inclined block 781 and the inclined baffle 78. Then, the pressure spring 79 resets to drive the inclined baffle 78 to reset. The plate blocked by the inclined baffle 78 falls downward to the stacking plate 54, and then the plate previously pushed out horizontally by the pushing frame 58 moves to the two support plate frames 61. Then, the operator swings the rotating handle 68 downward by 90°, and the downward swing of the rotating handle 68 by 90° drives the gear one 69 to rotate by 90°,When the gear 1 69 rotates 90°, the rack bar 67 moves horizontally, and the gear 2 610 rotates 90° together with the rack bar 67. When the gear 2 610 rotates 90°, the swing frame 63 and the moving wheel 65 rotate 90° together. Thus, the top plate frame 64 supported by the supporting block 62 is changed to be supported by the moving wheel 65. After the top plate frame 64 is supported by the moving wheel 65, the top plate frame 64 is lifted to a certain height, and the height of the upper surface of the top plate frame 64 is higher than the height of the upper surface of the support plate frame 61. Thus, the board on the support plate frame 61 can be transferred to the top plate frame 64. Then, the operator drags the rotating handle 68 to drag the board along the slope of the bottom plate 1. The board is first corrected in position, and then is guided and stacked one by one. Finally, the board is pushed out. Thus, the stacking of the board is more convenient, and the stacked board is more neat and is not easy to be inclined or even to be overturned.

[0030] Embodiment 2

[0031] On the basis of the embodiment 1, as shown in Figure 9 and Figure 10 a resistance reduction mechanism is further included, which is arranged on the bottom plate 1 and is used for reducing the resistance when the stacked board is transferred. The resistance reduction mechanism includes two guide plates 81, each of which is slidably connected with a sliding long rod 82. The sliding long rod 82 is provided with a plurality of inclined protrusions. The sliding long rod 82 and the guide plate 81 are connected with a return spring 83. Four limiting plates 84 are fixedly connected with the bottom plate 1. Two sliding long rods 82 pass through two groups of limiting plates 84 respectively. A plurality of straight rods 85 are fixedly connected with the bottom plate 1. Each of the straight rods 85 is slidably connected with a sliding plate 86. The sliding plate 86 and the straight rod 85 are connected with a tension spring 87. Two sliding plates 86 in each group are rotatably connected with a pulley 88. The pulley 88 is used for lifting the board to reduce the resistance during the movement of the board. The two sliding plates 86 in each group are fixedly connected with a cross rod 89, which is in contact with the sliding long rod 82.

[0032] At the beginning, the tension spring 87 is in the stretched state, the upper surface of all the pulleys 88 is higher than the upper surface of the support plate frame 61, and the upper surface of the pulley 88 is flush with the upper surface of the roller 56. When the pushing frame 58 pushes the stacked plates out of the stacking plate 54 along with the horizontal movement of the electric sliding block 42, the pushed plate will move to a plurality of pulleys 88. When the electric sliding block 42 moves a distance, the electric sliding block 42 will contact one end of the sliding long rod 82 and extrude the sliding long rod 82 to move horizontally for a distance. The horizontal movement of the sliding long rod 82 for a distance will reset the tension spring 87 to drive the cross rod 89, the pulley 88 and the sliding plate 86 to move downward under the guiding action of the inclined convex, and finally make the upper surface of the pulley 88 lower than the upper surface of the support plate frame 61. Then the plate falls on the support plate frame 61, and the electric sliding block 42 moves horizontally to reset. In this way, the pulley 88 is used to lift the bottom of the plate first, so that the plate will not shake when pushed due to resistance, and the bottom surface of the plate is also protected. Then the pulley 88 is retracted, so that the plate will not slide on the pulley 88 all the time, and the plate is more stable after being pushed out.

[0033] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A polycarbonate sheet stacking device, characterized in that, The system includes a base plate (1) placed on the ground. One side of the base plate (1) has an inclined surface. Two support frames (21) are fixedly connected to the side of the base plate (1) away from the inclined surface. Several rollers (22) are rotatably connected between the two support frames (21). The height of the rollers (22) decreases sequentially towards the inclined surface of the base plate (1). Guide rods (23) are fixedly connected to the upper part of each support frame (21). The sides of the guide rods (23) are trapezoidal. (1) A funnel frame (3) is fixedly connected in the middle. A slide rail (41) is fixedly connected on the bottom plate (1). An electric slider (42) is slidably connected on the slide rail (41). A stacking mechanism is provided on the bottom plate (1). The stacking mechanism is in contact with the funnel frame (3). The stacking mechanism is used to stack several pieces of board. A material transfer mechanism is provided on the bottom plate (1). The material transfer mechanism is used to transfer the stacked board. An isolation mechanism is provided on the funnel frame (3). The isolation mechanism is used to isolate the material during material transfer. The stacking mechanism includes two columns (51), both columns (51) are fixedly connected to the base plate (1), each column (51) is slidably connected to a sliding frame (52), a support spring (53) is connected between the sliding frame (52) and the column (51), a stacking plate (54) is fixedly connected between the two sliding frames (52), the stacking plate (54) has several square holes, several bent rods (55) are fixedly connected to the base plate (1), each bent rod (55) is slidably connected to a roller (56), a bent arm (57) is fixedly connected to the electric slider (42), and a pusher (58) is fixedly connected to the end of the bent arm (57) away from the electric slider (42).

2. The polycarbonate sheet stacking device according to claim 1, characterized in that, The material transfer mechanism includes two support plates (61), both of which are fixedly connected to the base plate (1). Six support blocks (62) are placed on the base plate (1). The lower surface of each support block (62) is horizontal. Three support blocks (62) on the same side form a group. Each support block (62) is fixedly connected to a swing frame (63). Three swing frames (63) on the same side form a group. A top plate frame (64) is rotatably connected between the three swing frames (63) in each group. The upper surface of the top plate frame (64) is lower than the upper surface of the support plates (61). The top plate frame (64) is in contact with the support plates (61). Each swing frame (63) is fixedly connected to a moving wheel (65) on one side. Four limiting blocks (66) are fixedly connected to the base plate (1). Two limiting blocks (66) form a group. A rack rod (67) is slidably connected between the two limiting blocks (66) in each group. A rotating handle (68) is rotatably connected to the side of each top plate frame (64) away from the support frame (21). Gear 1 (69) is fixedly connected to both sides of the rotating handle (68). Gear 2 (610) is fixedly connected to one side of each swing frame (63). Each gear 2 (610) and gear 1 (69) mesh with the rack rod (67) on the same side.

3. A polycarbonate sheet stacking device according to claim 2, characterized in that, The isolation mechanism includes four hanging plates (71), all of which are fixedly connected to one side of the outer wall of the funnel frame (3). Two hanging plates (71) form a group, and a sliding block (72) is slidably connected between the lower parts of the two hanging plates (71) in each group. A return spring (73) is connected between the sliding block (72) and the hanging plate (71). A side rod (74) is fixedly connected to the lower part of each of the two hanging plates (71), and a swing rod (75) is rotatably connected to the lower part of each side rod (74). A guide groove is opened on the swing rod (75). A connecting rod (76) is fixedly connected to the lower part of each sliding block (72). (76) Located in the guide groove on the swing rod (75), the stacking plate (54) is fixedly connected to two top blocks (77) on the side near the hanging plate (71), and the two support frames (21) are slidably connected to inclined baffles (78). The lower part of the two inclined baffles (78) near the stacking plate (54) is fixedly connected to an inclined block (781). A pressure spring (79) is connected between the inclined baffle (78) and the support frame (21). The push frame (58) is fixedly connected to two right-angle push rods (710) on the side near the electric slider (42). The right-angle push rods (710) are in contact with one end of the inclined baffle (78).

4. A polycarbonate sheet stacking device according to claim 3, characterized in that, It also includes a drag-reducing mechanism, which is disposed on the base plate (1). The drag-reducing mechanism is used to reduce the resistance when the stacked plates are transferred. The drag-reducing mechanism includes two guide plates (81), each of which is slidably connected to a sliding rod (82). The sliding rod (82) is provided with several inclined protrusions. A return spring (83) is connected between the sliding rod (82) and the guide plate (81). Four limiting plates (84) are fixedly connected to the base plate (1). Every two limiting plates (84) form a group. The sliding rod (82) passes through two sets of limiting plates (84) respectively. Several straight rods (85) are fixedly connected to the base plate (1). Each straight rod (85) is slidably connected to a sliding plate (86). A tension spring (87) is connected between the sliding plate (86) and the straight rod (85). Every two sliding plates (86) form a group. A pulley (88) is rotatably connected between the two sliding plates (86) in each group. A crossbar (89) is fixedly connected between each group of sliding plates (86). The crossbar (89) is in contact with the sliding rod (82).

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