Paper stacking machine capable of automatically feeding

Abstract

The utility model discloses a paper stacking machine capable of automatically feeding, which comprises a paperboard belt conveying mechanism, a paperboard roller conveying mechanism and a paperboard transferring and stacking mechanism, the paperboard transferring and stacking mechanism comprises a U-shaped blocking cover fixed to one end of the paperboard roller conveying mechanism, two pairs of first rotating shafts, two pairs of second rotating shafts, two sets of first chain transmission assemblies installed on the two first rotating shafts and two sets of second chain transmission assemblies installed on the two second rotating shafts, wherein the first rotating shafts and the second rotating shafts rotate on the top of the U-shaped blocking cover. The paperboard turnover device comprises a first chain transmission assembly, a second chain transmission assembly, a plurality of first paperboard supporting rods fixed to a chain in the first chain transmission assembly, a plurality of second paperboard supporting rods fixed to a chain in the second chain transmission assembly, a rotating device for driving a first rotating shaft and a second rotating shaft to rotate reversely, a pair of L-shaped supports and two pairs of turnover arms hinged to the two L-shaped supports correspondingly. The swinging device drives the two pairs of overturning arms to swing in a reciprocating mode, and the paperboard clamping devices are connected with the two pairs of overturning arms in a hinged mode. The automatic feeding and stacking device has the advantage of automatic feeding and stacking effects.

Description

Technical Field

[0001] The utility model relates to the technical field of cardboard stacking equipment, in particular to a paper stacking machine capable of automatic feeding. Background Art

[0002] Corrugated cardboard, as an important product in the field of cardboard processing, plays a crucial role in the fields of carton manufacturing, packaging materials, etc. due to its good elasticity and extensibility. At present, in the production and processing process of corrugated cardboard, in order to facilitate storage and transfer, it usually needs to be fed and stacked multiple times. However, this feeding and stacking process often relies on manual operation, which not only has a high labor intensity, low efficiency, but also has a high labor cost and poor economy. Content of the Utility Model

[0003] The purpose of the utility model is to provide a paper stacking machine capable of automatic feeding, which has the effects of automatic feeding and stacking.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: A paper stacking machine capable of automatic feeding includes a cardboard belt conveying mechanism, a cardboard roller conveying mechanism, and a cardboard transfer and stacking mechanism for feeding and stacking cardboard onto the cardboard roller conveying mechanism. The cardboard belt conveying mechanism is higher than the cardboard roller conveying mechanism, and the cardboard belt conveying mechanism is narrower than the cardboard roller conveying mechanism; the cardboard transfer and stacking mechanism includes a U-shaped shield fixed at one end of the cardboard roller conveying mechanism, a pair of upper and lower parallel rotating shafts I rotatably arranged at the top of the U-shaped shield, a pair of upper and lower parallel rotating shafts II rotatably arranged at the top of the U-shaped shield, two groups of chain drive components I installed on the two rotating shafts I, two groups of chain drive components II installed on the two rotating shafts II, a plurality of cardboard support rods I evenly fixed on the chains of the two groups of chain drive components I, a plurality of cardboard support rods II evenly fixed on the chains of the two groups of chain drive components II, a rotating device for driving the rotating shafts I and II to rotate synchronously and reversely, a pair of L-shaped brackets respectively parallel to both sides of the U-shaped shield, two pairs of turning arms with one ends respectively commonly hinged to the two L-shaped brackets, a swinging device for driving the two pairs of turning arms to swing reciprocally and synchronously above the cardboard belt conveying mechanism and the cardboard roller conveying mechanism, and a pair of cardboard clamping devices respectively hinged to the other ends of the two pairs of turning arms and parallel to each other. Each of the cardboard support rods I and each of the cardboard support rods II are aligned in sequence above the U-shaped shield, and the facing and flush cardboard support rods I and cardboard support rods II jointly support both ends of the cardboard.

[0005] The further setting of the utility model is: A pair of U-shaped brackets are fixedly arranged at the top of the U-shaped shield, and the two pairs of rotating shafts I and rotating shafts II are respectively rotatably arranged on the two U-shaped brackets.

[0006] A further arrangement of the present utility model is that the rotating device includes a pair of worm and worm gear reduction motors I and II respectively fixedly installed on two U-shaped brackets. A first rotating shaft fixedly passes through the output end of the worm and worm gear reduction motor I, and a second rotating shaft fixedly passes through the output end of the worm and worm gear reduction motor II. The worm and worm gear reduction motor I and the worm and worm gear reduction motor II work synchronously and in opposite directions.

[0007] A further arrangement of the present utility model is that the swinging device includes a pair of lifting plates respectively arranged in a lifting manner on two L-shaped brackets, a pair of lifting cylinders respectively fixed on the L-shaped brackets and with the top ends of the piston rods vertically connected to the two lifting plates, two pairs of mutually parallel movable hinge shafts respectively rotatably arranged on the two L-shaped brackets, two pairs of gears respectively fixed on the two pairs of movable hinge shafts, and a pair of racks respectively fixed on the lifting plates and meshing with the two gears. The two movable hinge shafts are respectively fixedly connected to one ends of two turning arms, and the two racks are respectively located on the same right side or the same left side of the two gears.

[0008] A further arrangement of the present utility model is that two vertically parallel dovetail chutes are formed on the L-shaped brackets, and a pair of vertically parallel dovetail sliders are fixedly arranged on one side of the lifting plate. The two dovetail sliders respectively slide in the two dovetail chutes.

[0009] A further arrangement of the present utility model is that the two pairs of movable hinge shafts on the two L-shaped brackets are respectively symmetrically concentric, and a transmission shaft is fixedly connected between a pair of coaxial movable hinge shafts.

[0010] A further arrangement of the present utility model is that the cardboard clamping device includes a pair of long strips parallel to each other and located on both sides of the cardboard belt conveying mechanism, a pair of clamping cylinders respectively fixedly installed on the two long strips, and a pair of clamping plates parallel to each other and located between the two long strips and respectively fixedly connected to the piston rods of the two clamping cylinders. A pair of fixed hinge shafts are fixedly arranged on the sides of the two long strips facing away from the cardboard belt conveying mechanism, and the two pairs of fixed hinge shafts respectively rotatably pass through one ends of the two pairs of turning arms. The clamping plates and the clamping cylinders are respectively located on both sides of the long strips, and the piston rod of the clamping cylinder passes through the long strip to connect the clamping plate.

[0011] A further arrangement of the present utility model is that a pair of guide columns are vertically fixedly arranged on the side of the clamping plate close to the long strip, and the two guide columns respectively slide through the long strip. A square groove capable of accommodating the clamping plate is formed on the side of the long strip facing the clamping plate.

[0012] A further arrangement of the present utility model is that a cardboard positioning device is further arranged in front of the long strip where the clamping long strip is located. The cardboard positioning device includes a positioning baffle sliding on the side of the long strip close to the cardboard belt conveying mechanism and an adjusting assembly for adjusting the relative distance position of the positioning baffle with respect to the clamping plate.

[0013] A further setting of the utility model is that the adjusting component includes a long hole opened on the side wall of the long strip board, a screw rod horizontally rotatably arranged in the long hole, a square nut slid in the long hole and threadedly connected to the screw rod, and a knob rotatably arranged at one end of the long strip board and with a torsion part penetrating into the long hole to connect one end of the screw rod.

[0014] The beneficial effect of the utility model is that by adopting the above technical solution, when feeding and stacking cardboard, first, the cardboard belt conveying mechanism conveys the produced cardboard between the two cardboard clamping devices, so that the two cardboard clamping devices clamp both sides of the cardboard. Then, the swinging device drives the two pairs of flipping arms to flip. Since one ends of the two pairs of flipping arms are respectively hinged to the two cardboard clamping devices, during the flipping process of the flipping arms, the two cardboard clamping devices will hold the cardboard horizontally and move, thereby taking the cardboard away from the cardboard belt conveying mechanism and transferring it above the two pairs of aligned cardboard support rods one and cardboard support rods two above the cardboard roller conveying mechanism. When the cardboard is placed on the two pairs of aligned cardboard support rods one and cardboard support rods two, the two cardboard clamping devices stop clamping the cardboard, and the swinging device drives the flipping arms to flip in the reverse direction, so that the two cardboard clamping devices return to the initial position again to prepare for the subsequent cardboard feeding work. At the same time, the rotating device drives the rotating shaft one and the rotating shaft two to respectively synchronously drive the chain transmission components one and two to operate in the reverse direction. Also, because the cardboard support rods one and cardboard support rods two are respectively fixed on the chains of the chain transmission components one and two, when the above chain transmission components one and two operate, the cardboard will descend accordingly. And when the above cardboard support rods one and cardboard support rods two respectively follow the chain to the other side of the rotating shaft one or the rotating shaft two, the cardboard will naturally fall onto the cardboard roller conveying mechanism. And so on, the subsequent cardboard on the cardboard belt conveying mechanism will be continuously transferred above the cardboard roller conveying mechanism and will successively fall and stack on the cardboard that was transferred to the cardboard roller conveying mechanism in the previous feeding process. Finally, after stacking reaches a certain height, the cardboard roller conveying mechanism will convey the stacked cardboard out of the U-shaped shield to prepare for a new round of cardboard feeding and stacking work.

[0015] The above process of automatically feeding and stacking cardboard, compared with the traditional manual feeding and stacking, not only has a fast speed and high efficiency, but also is fully automated and does not require manual participation, thus effectively improving the production efficiency of cardboard and reducing the labor cost of cardboard production. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0017] Figure 1 is the working schematic diagram of this embodiment Figure 1 ;

[0018] Figure 2 is the working schematic diagram of this embodiment Figure 2 (The cardboard belt conveying mechanism is omitted);

[0019] Figure 3 is the structural schematic diagram of the cardboard clamping device and the cardboard positioning device of this embodiment

[0020] In the figure, 1. Cardboard belt conveying mechanism; 2. Cardboard roller conveying mechanism; 4. U-shaped shield; 5. U-shaped bracket; 6. First rotating shaft; 7. Second rotating shaft; 8. First chain drive assembly; 9. Second chain drive assembly; 10. First cardboard support rod; 11. Second cardboard support rod; 12. Rotating device; 121. First worm and worm gear reduction motor; 122. Second worm and worm gear reduction motor; 13. L-shaped bracket; 131. Dovetail chute; 14. Flipping arm; 15. Oscillating device; 151. Lifting plate; 151a. Dovetail slider; 152. Lifting cylinder; 153. Movable hinge shaft; 153a. Transmission shaft; 154. Gear; 155. Rack; 16. Cardboard clamping device; 161. Long strip plate; 161a. Fixed hinge shaft; 161b. Square groove; 162. Clamping cylinder; 163. Clamping plate; 163a. Guide post; 17. Cardboard positioning device; 171. Positioning baffle; 172. Adjusting assembly; 172a. Long strip hole; 172b. Screw; 172c. Square nut; 172d. Knob. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions of the present utility model in combination with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0022] Embodiment: A paper stacking machine capable of automatic feeding, such as Figure 1 、 Figure 2As shown in the figure, it includes a cardboard belt conveying mechanism 1, a cardboard roller conveying mechanism 2, and a cardboard transfer and stacking mechanism for loading and stacking cardboard onto the cardboard roller conveying mechanism 2. The cardboard belt conveying mechanism 1 is higher than the cardboard roller conveying mechanism 2, and the cardboard belt conveying mechanism 1 is narrower than the cardboard roller conveying mechanism 2; the cardboard transfer and stacking mechanism includes a U-shaped shield 4 fixed to one end of the cardboard roller conveying mechanism 2, a pair of upper and lower parallel rotating shafts 6 rotatably arranged on the top of the U-shaped shield 4, a pair of upper and lower parallel rotating shafts 7 rotatably arranged on the top of the U-shaped shield 4, two sets of chain drive components 8 mounted on the two rotating shafts 6, two sets of chain drive components 9 mounted on the two rotating shafts 7, a plurality of cardboard support rods 10 evenly fixed on the chains in the two sets of chain drive components 8, a plurality of cardboard support rods 11 evenly fixed on the chains in the two sets of chain drive components 9, a rotating device 12 for driving the rotating shafts 6 and 7 to rotate synchronously and reversely, a pair of L-shaped brackets 13 respectively parallel to both sides of the U-shaped shield 4, two pairs of turning arms 14 with one ends respectively jointly hinged to the two L-shaped brackets 13, a swinging device 15 for driving the two pairs of turning arms 14 to swing reciprocally and synchronously above the cardboard belt conveying mechanism 1 and the cardboard roller conveying mechanism 2, and a pair of cardboard clamping devices 16 respectively hinged to the other ends of the two pairs of turning arms 14 and parallel to each other. Each cardboard support rod 10 and each cardboard support rod 11 are aligned in sequence above the U-shaped shield 4, and the facing and flush cardboard support rods 10 and cardboard support rods 11 jointly support both ends of the cardboard.

[0023] As Figure 1 、 Figure 2 shown in the figure, a pair of U-shaped brackets 5 are fixedly arranged on the top of the U-shaped shield 4, and the two pairs of rotating shafts 6 and 7 are respectively rotatably arranged on the two U-shaped brackets 5. By adopting the above U-shaped brackets 5, not only can the rotating shafts 6 and 7 be stably supported to rotate on the U-shaped shield 4, but also an installation position can be provided for the worm and gear reduction motor 121 or the worm and gear reduction motor 122 in the rotating device 12.

[0024] As Figure 1 、 Figure 2As shown in the figure, the rotating device 12 includes a pair of worm and worm gear reduction motors 121 and 122 respectively and fixedly installed on two U-shaped brackets 5. A first rotating shaft 6 is fixedly passed through the output end of the worm and worm gear reduction motor 121, and a second rotating shaft 7 is fixedly passed through the output end of the second worm and worm gear reduction motor. The worm and worm gear reduction motor 121 and the worm and worm gear reduction motor 122 work synchronously and in opposite directions. By adopting the above-mentioned worm and worm gear reduction motor 121 and worm and worm gear reduction motor 122, not only can the first rotating shaft 6 and the second rotating shaft 7 be stably driven to rotate, but also the self-locking function of the worm and worm gear reduction motor 121 and the worm and worm gear reduction motor 122 can lock the first cardboard support rod 10 and the second cardboard support rod 11 to ensure that the cardboard can be stably placed on the first cardboard support rod 10 and the second cardboard support rod 11.

[0025] As Figure 2 shown in the figure, the swinging device 15 includes a pair of lifting plates 151 respectively and vertically arranged on two L-shaped brackets 13, a pair of lifting cylinders 152 respectively fixed on the L-shaped brackets 13 and with the top ends of the piston rods respectively and vertically connected to the two lifting plates 151, two pairs of mutually parallel movable hinge shafts 153 respectively and rotatably arranged on the two L-shaped brackets 13, two pairs of gears 154 respectively fixed on the two pairs of movable hinge shafts 153, and a pair of racks 155 respectively fixed on the lifting plates 151 and meshing with the two gears 154. The two movable hinge shafts 153 are respectively fixedly connected to one ends of the two turning arms 14, and the two racks 155 are respectively located on the same right side or the same left side of the two gears 154. By adopting the above-mentioned swinging device 15, when it is necessary to drive the two pairs of turning arms 14 to reciprocally turn, first, the piston rod of the lifting cylinder 152 extends, so that the piston rod jacks up the lifting plate 151. Then, the two racks 155 on the lifting plate 151 will respectively mesh with and drive the two gears 154, and make the two gears 154 rotate synchronously. Since the two gears 154 and the two turning arms 14 are commonly and fixedly connected to the movable hinge shaft 153, under the synchronous rotation of the two gears 154, the two turning arms 14 will positively turn around the movable hinge shaft 153. Finally, when the piston rod of the lifting cylinder retracts, the two turning arms 14 will turn in the opposite direction and return to the initial position.

[0026] As Figure 2 shown in the figure, two vertically parallel dovetail chutes 131 are provided on the L-shaped bracket 13, and a pair of vertically parallel dovetail sliders 151a are fixedly arranged on one side of the lifting plate 151. The two dovetail sliders 151a respectively slide in the two dovetail chutes 131. By adopting the above-mentioned dovetail chutes 131 and dovetail sliders 151a, the lifting stability of the lifting plate 151 can be further improved to ensure that the rack 155 thereon stably meshes with and drives the gear 154.

[0027] As Figure 2As shown in the figure, the two pairs of movable hinge shafts 153 on the two L-shaped brackets 13 are symmetrically concentric respectively, and a transmission shaft 153a is fixedly connected between a pair of coaxial movable hinge shafts 153. By adopting the above-mentioned transmission shaft 153a, the synchronous flipping operation of the two pairs of flipping arms 14 can be further ensured, and then, in cooperation with the cardboard clamping device 16, the cardboard can be transferred safely and smoothly.

[0028] As Figure 2 , Figure 3 shown in the figure, the cardboard clamping device 16 includes a pair of long plates 161 that are parallel to each other and located on both sides of the cardboard belt conveying mechanism 1, a pair of clamping cylinders 162 respectively fixedly installed on the two long plates 161, and a pair of clamping plates 163 that are parallel to each other and located between the two long plates 161 and are respectively fixedly connected to the piston rods of the two clamping cylinders 162. On the side of the two long plates 161 facing away from the cardboard belt conveying mechanism 1, a pair of fixed hinge shafts 161a are fixedly arranged, and the two pairs of fixed hinge shafts 161a respectively pass through one end of the two pairs of flipping arms 14 in a rotating manner. The clamping plates 163 and the clamping cylinders 162 are respectively located on both sides of the long plates 161, and the piston rods of the clamping cylinders 162 pass through the long plates 161 to connect the clamping plates 163.

[0029] As Figure 3 shown in the figure, on the side of the clamping plate 163 close to the long plate 161, a pair of guide posts 163a are vertically fixedly arranged, and the two guide posts 163a respectively slide through the long plate 161. By adopting the above-mentioned guide posts 163a, not only can the movement stability of the clamping plate 163 be further ensured, but also the supporting force of the piston rod of the clamping cylinder 162 on the clamping plate 163 can be shared and reduced, and thus the service life of the cardboard clamping device 16 can be improved to a certain extent. Among them, on the side of the long plate 161 facing the clamping plate 163, a square groove 161b capable of accommodating the clamping plate 163 is provided, which can place the clamping plate 163 before and after the work of the clamping plate 163, and avoid the long-term support of the guide posts 163a and the piston rod of the clamping cylinder 162 on the clamping plate 163.

[0030] As Figure 2 , Figure 3 shown in the figure, in front of the long plate 161 located at the clamping long plate, a cardboard positioning device 17 is further provided. The cardboard positioning device 17 includes a positioning baffle 171 that slides on the side of the long plate 161 close to the cardboard belt conveying mechanism 1, and an adjusting assembly 172 for adjusting the relative distance position of the positioning baffle 171 with respect to the clamping plate 163; the adjusting assembly 172 includes a long hole 172a opened on the side wall of the long plate 161, a screw 172b horizontally rotatably arranged in the long hole 172a, a square nut 172c that slides in the long hole 172a and is threadedly connected to the screw 172b, and a knob 172d that rotates at one end of the long plate 161 and the twisting part thereof penetrates into the long hole 172a to connect one end of the screw 172b.

[0031] By adopting the positioning baffle 171 in the above cardboard positioning device 17, not only can the front, back, left and right positions of the cardboard be jointly positioned with the clamping plate 163 to ensure that the cardboard is accurately transferred onto the cardboard support rod 1 and the cardboard support rod 2, but also in cooperation with the adjustment assembly 172, the distance position of the positioning baffle 171 relative to the clamping plate 163 can be adjusted, thereby definitely improving the applicable range of the cardboard positioning device 17. Among them, the working principle of the adjustment assembly 172 is that the staff manually twists the knob 172d, causing the screw 172b in the long slot 172a to rotate. Then, the square nut 172c that is threadedly connected to the screw 172b and slides in the long slot 172a will relatively slide along the long slot 172a under the rotation of the screw 172b. Moreover, the positioning baffle 171 connected to the square nut 172c will approach or move away from the clamping plate 163 under the drive of the square nut 172c, thereby achieving the effect of adjusting the relative distance between the positioning baffle 171 and the clamping plate 163.

[0032] Working principle of this embodiment:

[0033] When it is necessary to load and stack cardboard, first, the cardboard belt conveying mechanism 1 conveys the produced cardboard to between the two cardboard clamping devices 16, so that the two cardboard clamping devices 16 clamp both sides of the cardboard. Then, the swinging device 15 drives the two pairs of turning arms 14 to turn. Since one end of each of the two pairs of turning arms 14 is hinged to the two cardboard clamping devices 16 respectively, during the turning process of the turning arms 14, the two cardboard clamping devices 16 will hold the cardboard horizontally and move, thereby taking the cardboard away from the cardboard belt conveying mechanism 1 and transferring it above the two pairs of aligned cardboard support rods one 10 and cardboard support rods two 11 above the cardboard roller conveying mechanism 2. When the cardboard is placed on the two pairs of aligned cardboard support rods one 10 and cardboard support rods two 11, the two cardboard clamping devices 16 stop clamping the cardboard, and the swinging device 15 drives the turning arms 14 to turn in the reverse direction, so that the two cardboard clamping devices 16 return to the initial position again to prepare for the subsequent cardboard loading work; at the same time, the rotating device 12 drives the first rotating shaft 6 and the second rotating shaft 7 to drive the first chain transmission component 8 and the second chain transmission component 9 to operate synchronously and in the reverse direction respectively. Also, because the cardboard support rods one 10 and cardboard support rods two 11 are respectively fixed on the chains of the first chain transmission component 8 and the second chain transmission component 9, when the above-mentioned first chain transmission component 8 and the second chain transmission component 9 operate, the cardboard will descend accordingly. And when the above-mentioned cardboard support rods one 10 and cardboard support rods two 11 respectively follow the chain to the other side of the first rotating shaft 6 or the second rotating shaft 7, the cardboard will naturally fall onto the cardboard roller conveying mechanism 2; and so on, the subsequent cardboard on the cardboard belt conveying mechanism 1 will be continuously transferred above the cardboard roller conveying mechanism 2 and will fall and stack on the cardboard that was previously transferred to the cardboard roller conveying mechanism 2 in the previous loading; finally, after the stack reaches a certain height, the cardboard roller conveying mechanism 2 will convey the stacked cardboard out of the U-shaped shield 4 to prepare for a new round of cardboard loading and stacking work.

[0034] The above process of automatically loading and stacking cardboard, compared with the traditional manual loading and stacking, not only has a fast speed and high efficiency, but also is fully automated and does not require manual participation, thus effectively improving the production efficiency of cardboard and reducing the labor cost of cardboard production.

Claims

1. A paper stacker capable of automatically loading materials, characterized in that: The invention comprises a cardboard belt conveying mechanism (1), a cardboard roller conveying mechanism (2), and a cardboard transfer stacking mechanism for loading cardboard and stacking cardboard on the cardboard roller conveying mechanism (2), wherein the cardboard belt conveying mechanism (1) is higher than the cardboard roller conveying mechanism (2), and the cardboard belt conveying mechanism (1) is narrower than the cardboard roller conveying mechanism (2); the cardboard transfer stacking mechanism comprises a U-shaped shield (4) fixed on one end of the cardboard roller conveying mechanism (2), a pair of rotating shafts (6) parallel to each other and rotatably arranged on the top of the U-shaped shield (4), a pair of rotating shafts (7) parallel to each other and rotatably arranged on the top of the U-shaped shield (4), two groups of chain transmission components (8) mounted on the two rotating shafts (6), two groups of chain transmission components (9) mounted on the two rotating shafts (7), and a plurality of cardboard support rods (10) uniformly fixed on the chains in the chain transmission component (8). ), a plurality of cardboard support rods (11) uniformly fixed on the chain in the chain transmission assembly (9), a rotating device (12) for driving the rotating shaft (6) and the rotating shaft (7) to rotate synchronously in opposite directions, a pair of L-shaped brackets (13) respectively parallel to the two sides of the U-shaped baffle (4), two pairs of flip arms (14) one end of which is respectively hinged to the two L-shaped brackets (13), a swinging device (15) for driving the two pairs of flip arms (14) to swing back and forth synchronously above the cardboard belt conveyor (1) and the cardboard roller conveyor (2), and a pair of cardboard clamping devices (16) respectively hinged to the other ends of the two pairs of flip arms (14) and parallel to each other, each of the cardboard support rods (10) and each of the cardboard support rods (11) are aligned in sequence above the U-shaped baffle (4), and the cardboard support rods (10) and the cardboard support rods (11) facing each other and flush with each other jointly support the two ends of the cardboard.

2. The paper stacker capable of automatic loading according to claim 1, characterized in that: A pair of U-shaped brackets (5) are fixedly arranged on the top of the U-shaped shield (4), and two pairs of rotating shafts 1 (6) and 2 (7) are rotatably arranged on the two U-shaped brackets (5).

3. The paper stacker capable of automatic loading according to claim 2, characterized in that: The rotating device (12) comprises a pair of worm gear reduction motor 1 (121) and worm gear reduction motor 2 (122) respectively fixedly mounted on two U-shaped brackets (5); the rotating shaft 1 (6) is fixedly passed through the output end of the worm gear reduction motor 1 (121); the rotating shaft 2 (7) is fixedly passed through the output end of the worm gear reduction motor 2; the worm gear reduction motor 1 (121) and the worm gear reduction motor 2 (122) work synchronously and in opposite directions.

4. The paper stacker capable of automatic loading according to claim 1, characterized in that: The swing device (15) comprises a pair of lifting plates (151) respectively mounted on two L-shaped brackets (13) for lifting, a pair of lifting cylinders (152) respectively fixed on the L-shaped brackets (13) and with piston rods whose top ends are respectively vertically connected to the two lifting plates (151), two pairs of movable hinge shafts (153) which are parallel to each other and respectively rotatably mounted on the two L-shaped brackets (13), two pairs of gears (154) respectively fixed on the two pairs of movable hinge shafts (153), and a pair of racks (155) fixed on the lifting plates (151) and respectively meshing with the two gears (154). The two movable hinge shafts (153) are respectively fixedly connected to one end of the two flip arms (14), and the two racks (155) are respectively located on the same right side or the same left side of the two gears (154).

5. The paper stacker capable of automatic loading according to claim 4, characterized in that: The L-shaped bracket (13) is provided with two vertically parallel dovetail slide grooves (131), and a pair of vertically parallel dovetail sliders (151a) are fixedly provided on one side of the lifting plate (151), and the two dovetail sliders (151a) slide in the two dovetail slide grooves (131) respectively.

6. The paper stacker capable of automatic loading according to claim 4, characterized in that: The two pairs of movable hinge shafts (153) on the two L-shaped brackets (13) are symmetrical and concentric, and a transmission shaft (153a) is fixedly connected between the two coaxial movable hinge shafts (153).

7. The paper stacker capable of automatic loading according to claim 1, characterized in that: The cardboard clamping device (16) comprises a pair of long strips (161) parallel to each other and located on both sides of the cardboard belt conveyor mechanism (1), a pair of clamping cylinders (162) respectively fixedly mounted on the two long strips (161), and a pair of clamping plates (163) parallel to and located between the two long strips (161) and respectively fixedly connected to the piston rods of the two clamping cylinders (162); a pair of fixed hinge shafts (161a) are fixedly arranged on one side of the two long strips (161) facing away from the cardboard belt conveyor mechanism (1), and the two pairs of fixed hinge shafts (161a) are respectively rotated to pass through one end of the two pairs of flip arms (14); the clamping plates (163) and the clamping cylinders (162) are respectively located on both sides of the long strips (161), and the piston rods of the clamping cylinders (162) pass through the long strips (161) to connect to the clamping plates (163).

8. The paper stacker capable of automatic loading according to claim 7, characterized in that: A pair of guide pillars (163a) are vertically fixedly arranged on one side of the clamping plate (163) close to the long plate (161), and the two guide pillars (163a) slide through the long plate (161) respectively. A square groove (161b) capable of accommodating the clamping plate (163) is provided on one side of the long plate (161) facing the clamping plate (163).

9. The paper stacker capable of automatic loading according to claim 7, characterized in that: The long strip (161) is also provided with a paperboard positioning device (17) located in front of the clamping long strip, and the paperboard positioning device (17) comprises a positioning baffle (171) sliding on the side of the long strip (161) close to the paperboard belt conveying mechanism (1), and an adjusting component (172) for adjusting the distance between the positioning baffle (171) and the clamping plate (163).

10. The paper stacker capable of automatic loading according to claim 9, characterized in that: The adjustment assembly (172) comprises a long hole (172a) opened on the side wall of the long plate (161), a screw rod (172b) horizontally rotatably arranged in the long hole (172a), a square nut (172c) sliding in the long hole (172a) and threadedly connected to the screw rod (172b), and a knob (172d) rotating at one end of the long plate (161) and having a torsion portion passing through the long hole (172a) and connected to one end of the screw rod (172b).

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