Automatic paperboard stacking machine

Abstract

The invention relates to the technical field of paperboard packaging and stacking, in particular to an automatic paperboard stacking machine which comprises a stacking machine base. An automatic flat pressing stacking device; an adjusting screw rod; a material receiving bottom plate; a vertical conveyor; and the paperboard stacking height adjusting and discharging device is arranged at the bottom of the stacking machine base and used for adjusting the height of the material receiving bottom plate, adjusting the height difference between the stacked paperboards and the upper conveyor and the lower conveyor and discharging the stacked paperboards. Stacked paperboards are flatly pressed in advance through the automatic flat pressing stacking device, the paperboards are adjusted in the flat pressing period, then the stacked paperboards are stacked in order, meanwhile, the problem of edge warping of the paperboards is avoided, the paperboard stacking height adjusting discharging device is combined, the height of a material receiving bottom plate is adjusted, and the paperboard stacking height adjusting discharging device is combined with the paperboard stacking height adjusting discharging device, so that the paperboard stacking efficiency is improved. Therefore, the problem that the stability and the regularity of the paperboards are poor due to the high fall of discharging and stacking is solved, and the stacked paperboards are further automatically discharged.

Description

Technical Field

[0001] The invention relates to the technical field of cardboard packaging palletizing, in particular to an automatic cardboard palletizing machine. Background Art

[0002] Cardboard is also called board paper. It is a thick paper sheet made of various pulps and interwoven with fibers. Cardboard is also called board paper. It is a thick paper sheet made of various pulps and interwoven with fibers. When cardboard is produced, in order to transport or collect cardboard, it is often necessary to stack the cardboard at a certain height so that the cardboard is stacked into a neat structure. Traditionally, when processing and stacking cardboard, a mechanical arm is used to adsorb and place the cardboard. This stacking method has high precision, but because some cardboards are not single-piece structures, when stacking the cardboard in the packaging box, the cardboard is blown open during the movement due to the structural wind, which increases the difficulty of placing the mechanical arm. In addition, this kind of mechanical arm stacking equipment is expensive, so small factories still use manual stacking. This method requires manual collection of cardboard on the conveyor belt, and then place the cardboard on the stacking platform. When the cardboard is stacked to a certain height, it is then transferred and transported. This stacking method is inefficient. Each time the cardboard is placed, the position of the cardboard needs to be corrected to ensure that the end surface of the cardboard is flush after stacking.

[0003] In order to solve the manual palletizing problem in small factories, there are machines in the prior art that align and adjust the four sides of the cardboard during palletizing. However, during the palletizing work after the cardboard is processed, there is a problem that some edges of the cardboard are slightly warped. At this time, the palletizer will have an offset problem when performing alignment adjustment. In order to solve the problem of the cardboard warping during palletizing, it is necessary to add a flattening device, which will cause interference with the work of the palletizer. At the same time, in order to achieve high stacking of cardboard, the existing palletizer usually has a high drop from the conveyor feeder. The high drop palletizing method further increases the instability and position deviation of cardboard palletizing, thereby increasing the workload of the palletizer alignment. In view of this, we propose an automatic cardboard palletizer. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an automatic cardboard palletizer, which solves the problems raised in the above background technology. To achieve the above purpose, the present invention is implemented through the following technical solutions: an automatic cardboard palletizer, including a palletizer seat, an automatic flattening and pressing palletizing device is arranged on the top of the palletizer seat, an adjusting screw is rotated in the palletizer seat, a material receiving bottom plate is threadedly connected to the adjusting screw, the material receiving bottom plate is used to receive the cardboards in sequence, and the automatic flattening and pressing palletizing device is used to flatten and align the cardboards on the material receiving bottom plate in sequence; an upper and lower conveyor, the upper and lower conveyors are arranged on one side of the palletizer seat, and are used to convey the cardboards before and after palletizing; a cardboard stacking height adjustment and unloading device, the cardboard stacking height adjustment and unloading device is arranged at the bottom of the palletizer seat, and is used to adjust the height of the material receiving bottom plate, adjust the height difference between the cardboards in the stacking and the upper and lower conveyors, and unload the cardboards after stacking.

[0005] Preferably, the automatic flat-pressing palletizing device includes an active motor and an adjustment device, the end of the active motor is installed inside the top of the palletizing machine base, the output shaft of the active motor is clamped with a magnetic driving wheel, the end of the magnetic driving wheel is magnetically driven with a magnetic passive gear disk, the surface of the magnetic passive gear disk is meshed with a passive gear, the interior of the passive gear is fixedly connected with a spiral rod, the surface of the spiral rod is slidably connected with a fixed sleeve rod, and the bottom end of the fixed sleeve rod is fixedly connected with a pressure plate.

[0006] Preferably, the inside of the magnetic driving wheel and the magnetic passive gear disc are both distributed with a plurality of magnets with positive and negative poles arranged in an alternating manner in a circular array, the magnetic passive gear disc is fixedly connected to a sliding shaft, the sliding shaft is slidably connected to the inside of the palletizer base, the top end of the screw rod is rotatably connected to the palletizer base, and the inside of the fixed sleeve rod is slidably connected to the screw rod via a ball bearing.

[0007] Preferably, the adjustment device includes a key shaft, the top end of the key shaft is rotatably connected to the palletizer base, a passive protrusion is fixedly connected to the key shaft, a sleeve shaft is slidably connected to the surface of the key shaft, a driving ring seat is fixedly connected to the surface of the sleeve shaft, an adjusting bent rod is slidably connected in the driving ring seat, and a fork-shaped adjustment plate is fixedly connected to the bottom end of the adjusting bent rod.

[0008] Preferably, the bottom end of the sleeve shaft is rotatably connected to the pressure plate, the surface of the adjusting bent rod is slidably connected to the pressure plate, and the top of the fork-shaped adjustment plate is slidably connected to the inner wall of the pressure plate.

[0009] Preferably, the adjusting bent rod includes a bent sleeve, the surfaces of the bent sleeve are respectively slidably connected inside the driving ring seat and the pressure plate, the end of the bent sleeve is rotatably connected to a screw sleeve, the internal thread of the screw sleeve is connected to a threaded bent rod, and the end of the threaded bent rod is fixedly connected to the top of the fork-shaped adjustment plate.

[0010] Preferably, the inner ring of the magnetic passive gear disk is respectively provided with a delay bump and a reset bump, the passive bump is located between the delay bump and the reset bump, and the surface of the passive bump is connected to the surface of the reset bump.

[0011] Preferably, the cardboard stacking height adjustment and unloading device includes a control motor, a positioning seat and a trigger switching device, the end of the control motor is installed at the bottom of the palletizer seat, the output shaft of the control motor is clamped with a clamping shaft, the surface of the clamping shaft is slidably connected with a driving gear disk, the top and bottom ends of the driving gear disk are respectively rotatably connected with a passive pressure plate and an elastic chassis, the surface of the driving gear disk is meshed with a connecting gear, the interior of the positioning seat is slidably connected with a gear rod, and the end of the gear rod is fixedly connected with a unloading top seat.

[0012] Preferably, the top of the passive pressure plate is slidably connected to the palletizer base through a sliding rod, the bottom end of the elastic chassis is elastically connected to the palletizer base through a spring, the connecting gear is fixedly connected to the adjusting screw, the end of the positioning seat is fixedly connected to the palletizer base, and the unloading top seat is slidably connected to the palletizer base.

[0013] Preferably, the trigger switching device includes a switching shaft and a lower sliding tooth, the end of the switching shaft is rotatably connected to the inside of the material receiving bottom plate, and tooth one, tooth two and a switching pressure block are fixedly connected to the switching shaft respectively. The lower sliding tooth is slidably connected to the side of the fork-shaped adjustment plate close to the switching shaft, and a transverse groove is provided on the material receiving bottom plate for the lower sliding tooth to slide horizontally.

[0014] It can be seen from the above technical solutions that the automatic cardboard palletizer provided in the embodiments of this specification has at least the following beneficial effects: (1) The present invention pre-presses the stacked cardboards by means of an automatic flattening and stacking device, and adjusts the cardboards during the flattening period, thereby achieving neat stacking of the stacked cardboards while avoiding the problem of cardboard warping. In combination with the cardboard stacking height adjustment and unloading device, the height of the unloading bottom plate is adjusted, thereby avoiding the problem of poor stability and neatness of the cardboards due to the high drop of unloading and stacking, and further achieving the automatic unloading of the stacked cardboards.

[0015] (2) The present invention uses a fork-shaped fork-type adjustment plate to slide within the pressing plate and the material receiving bottom plate, so that the pressing plate and the material receiving bottom plate can be adjusted in height on the fork-type adjustment plate without affecting the subsequent movement of the fork-type adjustment plate. The number of fork-type adjustment plates is set to three, which are respectively used to adjust the position of the three sides of the cardboard. Combined with the baffles on the upper and lower conveyors, during operation, when the three fork-type adjustment plates are retracted inward, the cardboard can be neatly stacked close to the baffles, and at the same time, it is convenient for the stacked cardboard to be unloaded from the side where the fork-type adjustment plate is missing.

[0016] (3) The present invention provides a sliding connection between the sleeve shaft and the key shaft, so that the driving ring seat as a whole can be height-adjusted and the fork-shaped adjustment plate can be driven at the same time. By providing an adjustable curved rod that can be rotatably adjusted in length, the operator can adjust the distance between the threaded curved rod and the curved sleeve by rotating the threaded sleeve, thereby achieving the effect of adjusting the specific position of the fork-shaped adjustment plate, so that the three fork-shaped adjustment plates can adjust the position of cardboards of different sizes, thereby promoting the applicability of cardboard stacking.

[0017] (4) The present invention drives the driving gear plate to rotate by controlling the clamping shaft on the motor. The driving gear plate drives the adjusting screw through the connecting gear. The adjusting screw can achieve the effect of driving the material receiving bottom plate to move downward during the rotation. The material receiving bottom plate is continuously moved downward according to the amount of cardboard unloading during the stacking period, thereby achieving the effect of ensuring that the stacking height of the top cardboard is always the same, so that the cardboard is always in a low-drop unloading stacking, thereby avoiding the problem of poor stability and neatness of the cardboard due to the high drop of unloading stacking.

[0018] (5) The present invention triggers the switching device in combination with the automatic flat pressing stacking device to switch the driving gear disc to engage the gear rod, and the gear rod drives the unloading top seat to move as a whole in the direction of the upper and lower conveyors. During the movement, the unloading top seat contacts and pushes the stacked cardboard on the receiving bottom plate onto the upper and lower conveyors. The upper and lower conveyors transport the stacked cardboard, further achieving the automatic unloading of the stacked cardboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the top structure of the palletizer base in the present invention; Figure 3 It is a schematic diagram of the spiral rod structure in the present invention; Figure 4 It is a schematic diagram of the fixed sleeve rod structure in the present invention; Figure 5 It is a structural schematic diagram of the magnetic driving wheel in the present invention; Figure 6 It is a schematic diagram of the internal structure of the adjustable crank lever in the present invention; Figure 7 It is a schematic diagram of the key shaft structure in the present invention; Figure 8 This is a schematic diagram of the structure of the magnetic passive gear disk in the present invention; Fig. 9 This is a schematic diagram of the structure of the cardboard stacking height adjustment and unloading device in the present invention; Fig.10 This is a schematic diagram of the structure of the shaft clamp in the present invention; Fig.11 This is a schematic diagram of the structure of the material receiving bottom plate in the present invention; Fig.12 It is a schematic diagram of the structure of the transverse groove in the present invention; Fig.13 It is a schematic diagram of the switching shaft structure in the present invention; Fig.14 This is a schematic diagram of the structure of the downward sliding teeth in the present invention; Fig.15 It is a schematic diagram of the structure of the palletizer base in the present invention.

[0020] In the figure: 1, palletizer base; 2, automatic flat-pressing palletizer; 21, active motor; 22, magnetic driving wheel; 23, magnetic passive gear disc; 231, sliding shaft; 232, delay convex block; 233, reset convex block; 24, passive gear; 25, screw rod; 26, fixed sleeve rod; 261, ball bearing; 27, pressure plate; 28, adjustment device; 281, key shaft; 282, passive convex block; 283, sleeve shaft; 284, driving ring seat; 285, adjusting curved rod; 2851, curved sleeve; 2852, screw sleeve; 2853, thread Bending rod; 286, fork-type adjustment plate; 3, cardboard stacking height adjustment unloading device; 31, control motor; 32, clamping shaft; 33, driving gear plate; 34, passive pressure plate; 341, sliding rod; 35, elastic chassis; 36, connecting gear; 37, positioning seat; 38, trigger switching device; 381, switching shaft; 382, ​​tooth one; 383, tooth two; 384, switching pressure block; 385, downward tooth; 386, horizontal groove; 39, gear rod; 310, unloading top seat; 4, adjusting screw; 5, material receiving bottom plate; 6, upper and lower conveyors. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1 - Fig.15As shown, an automatic cardboard palletizer comprises a palletizer base 1, an automatic flattening and pressing palletizing device 2 is arranged on the top of the palletizer base 1, four groups of adjusting screws 4 are rotated in the palletizer base 1, the bottom ends of the four groups of adjusting screws 4 are sequentially driven by pulleys and belts, the four groups of adjusting screws 4 are all threadedly connected with a receiving bottom plate 5, the receiving bottom plate 5 is used to sequentially receive the cardboards, and the automatic flattening and pressing palletizing device 2 is used to sequentially flatten and align the cardboards on the receiving bottom plate 5 for palletizing; an upper and lower conveyor 6, the upper and lower conveyor 6 is arranged on one side of the palletizer base 1, and is used for conveying the cardboards before and after palletizing, and the upper and lower conveyor 6 is divided into an upper and lower two layers, the upper conveyor belt is used for automatic unloading of the cardboards before palletizing, and the lower conveyor belt is used for unloading the cardboards after palletizing.

[0024] In this embodiment, the automatic flat pressing stacking device 2 includes an active motor 21 and an adjustment device 28. The end of the active motor 21 is installed inside the top of the stacking machine base 1. The output shaft of the active motor 21 is clamped with a magnetic driving wheel 22. The end of the magnetic driving wheel 22 is magnetically transmitted with a magnetic passive toothed disc 23. The surface of the magnetic passive toothed disc 23 is meshed with a passive gear 24. The interior of the passive gear 24 is fixedly connected with a spiral rod 25, and the surface of the spiral rod 25 is slidably connected with a fixed sleeve rod 26. The bottom end of the fixed sleeve rod 26 is fixedly connected with a pressure plate 27, and the interior of the fixed sleeve rod 26 is slidably connected with the spiral rod 25 through a fixed ball 261. By starting the active motor 21, the output shaft of the active motor 21 rotates clockwise through the magnetic drive wheel 22 to magnetically drive the magnetic passive gear disc 23. The magnetic passive gear disc 23 is divided into two states during rotation: the initial working state and the later working state. During the initial working state, the magnetic passive gear disc 23 can rotate through the teeth distributed on its outer ring to mesh with the passive gear 24, and the passive gear 24 drives the screw rod 25 to rotate in the fixed sleeve rod 26. A slide groove is provided on the screw rod 25, and the fixed sleeve rod 26 limits the movement of the slide groove through the ball 261 in the internal fixed state, that is, when the screw rod 25 rotates, the fixed sleeve rod 26 is forced to move downward, and the fixed sleeve rod 26 drives the overall pressing plate 27 to move downward. At this time, the pressing plate 27 achieves the effect of flattening the cardboard on the docking material bottom plate 5, thereby avoiding the problem of cardboard warping.

[0025] Furthermore, a plurality of magnets with positive and negative poles staggered are distributed in a circular array inside the magnetic driving wheel 22 and the magnetic passive gear disc 23, and the transmission effect is achieved by magnetic coupling attraction and repulsion, thereby achieving the purpose of contactless transmission. A sliding shaft 231 is fixedly connected to the magnetic passive gear disc 23, and the sliding shaft 231 is slidably connected to the inside of the stacker base 1, and the top end of the screw rod 25 is rotatably connected to the stacker base 1.

[0026] Furthermore, the adjusting device 28 includes a key shaft 281, the top end of the key shaft 281 is rotatably connected to the stacker base 1, the key shaft 281 is fixedly connected with a passive protrusion 282, the surface of the key shaft 281 is slidably connected with a sleeve shaft 283, the bottom end of the sleeve shaft 283 is rotatably connected to the pressure plate 27, the surface of the sleeve shaft 283 is fixedly connected with a driving ring seat 284, an adjusting bent rod 285 is slidably connected inside the driving ring seat 284, the surface of the adjusting bent rod 285 is slidably connected to the pressure plate 27, the bottom end of the adjusting bent rod 285 is fixedly connected with a fork-shaped adjusting plate 286, the top of the fork-shaped adjusting plate 286 is slidably connected to the inner wall of the pressure plate 27, and the fork-shaped adjusting plate 286 adopts a fork shape to perform limited sliding in the pressure plate 27 and the material receiving bottom plate 5, so that the pressure plate 27 and the material receiving bottom plate 5 can be height-adjusted on the fork-shaped adjusting plate 286 without affecting the subsequent movement of the fork-shaped adjusting plate 286. The upper and lower conveyors 6 are divided into two layers, the upper conveyor belt is used for automatic unloading of cardboard before palletizing, and the lower conveyor belt is used for unloading of cardboard after palletizing. The upper and lower conveyors 6 are provided with baffles (such as Fig.15 As shown in the figure, in this design, the number of fork-shaped adjustment plates 286 is set to three, which are used to adjust the position of the three sides of the cardboard respectively. Combined with the baffles on the upper and lower conveyors 6, during operation, when the three fork-shaped adjustment plates 286 are retracted inward, the cardboard can be neatly stacked close to the baffles, and at the same time, it is convenient for the stacked cardboard to be unloaded from the side where the fork-shaped adjustment plates 286 are missing.

[0027] When the magnetic passive gear disc 23 drives the key shaft 281 to rotate, the key shaft 281 drives the driving ring seat 284 to rotate through the sleeve shaft 283, and the driving ring seat 284 drives the fork-shaped adjustment plate 286 to move toward the axis of the sleeve shaft 283 through the adjustment crank 285. The fork-shaped adjustment plate 286 adjusts the position of the cardboard during the movement toward the axis, first flattens the top of the cardboard in the stacking, and adjusts the position of the cardboard during the flattening, thereby achieving neat stacking of the stacked cardboard while avoiding the problem of cardboard warping. By setting the sliding connection of the sleeve shaft 283 on the key shaft 281, the driving ring seat 284 can be adjusted in height as a whole, and the fork-shaped adjustment plate 286 can be driven.

[0028] It is worth noting that the adjusting bent rod 285 includes a bent sleeve 2851, the surfaces of the bent sleeve 2851 are slidably connected in the blocks protruding from the driving ring seat 284 and the pressure plate 27 respectively, the end of the bent sleeve 2851 is rotatably connected with a screw sleeve 2852, and the internal thread of the screw sleeve 2852 is connected with a threaded bent rod 2853. Since the protruding block on the pressure plate 27 limits the bent sleeve 2851 to only move in a straight line, the threaded bent rod 2853 is also limited to move in a straight line. The end of the threaded bent rod 2853 is fixedly connected to the top of the fork-shaped adjustment plate 286. By providing an adjusting bent rod 285 that can be rotatably adjusted in length, the operator can achieve the spacing between the threaded bent rod 2853 and the bent sleeve 2851 by rotating the screw sleeve 2852, thereby achieving the effect of adjusting the specific position of the fork-shaped adjustment plate 286, so that the three fork-shaped adjustment plates 286 can adjust the positions of cardboards of different sizes, thereby promoting the applicability of cardboard stacking.

[0029] In addition, the inner ring of the magnetic passive toothed disc 23 is respectively provided with a delay protrusion 232 and a reset protrusion 233, the passive protrusion 282 is located between the delay protrusion 232 and the reset protrusion 233, and the surface of the passive protrusion 282 is connected to the surface of the reset protrusion 233. When the magnetic passive toothed disc 23 is in the initial operation, the magnetic passive toothed disc 23 can rotate by meshing the teeth distributed on its outer ring with the passive gear 24. At this time, the delay protrusion 232 in the inner ring of the magnetic passive toothed disc 23 gradually approaches the passive protrusion 282, and the reset protrusion 233 gradually moves away from the passive protrusion 282. The rotation of the magnetic passive toothed disc 23 does not affect the rotation of the key shaft 281. In the later operation, the magnetic passive toothed disc 23 loses the meshing with the passive gear 24. At this time, the magnetic passive toothed disc 23 that continues to rotate contacts the passive protrusion 282 through the internal delay protrusion 232 and drives the key shaft 281 to rotate as a whole, thereby achieving the effect of driving the driving ring seat 284 to rotate. The reset protrusion 233 is used to contact the driven gear 24 to perform reset rotation when the output shaft of the active motor 21 performs reset rotation counterclockwise.

[0030] Example 2

[0031] Based on Example 1, please refer to Figure 1 - Fig.15 As shown, an automatic cardboard palletizer includes a cardboard stacking height adjustment and unloading device 3, which is arranged at the bottom of the palletizer base 1, and is used to adjust the height of the docking bottom plate 5, adjust the height difference between the cardboard in the stacking and the upper and lower conveyors 6, and unload the stacked cardboard.

[0032] Furthermore, the cardboard stacking height adjustment and unloading device 3 includes a control motor 31, a positioning seat 37 and a trigger switching device 38. The end of the control motor 31 is installed at the bottom of the stacking machine base 1. The output shaft of the control motor 31 is clamped with a clamping shaft 32. The surface of the clamping shaft 32 is slidably connected with a driving gear disc 33. The top and bottom ends of the driving gear disc 33 are respectively rotatably connected with a passive pressure plate 34 and an elastic chassis 35. The bottom end of the elastic chassis 35 is elastically connected to the stacking machine base 1 through a spring. During stacking, the height of the driving gear disc 33 is affected by the spring on the elastic chassis 35 and is flush with the height of the connecting gear 36. At this time, the rotating driving gear disc 33 will drive the adjusting screw 4 to rotate by meshing with the connecting gear 36. The surface of the driving gear disc 33 is meshed with a connecting gear 36, and the connecting gear 36 is fixedly connected to the adjusting screw 4. The interior of the positioning seat 37 is slidably connected with a gear rod 39, and the end of the gear rod 39 is fixedly connected with a unloading top seat 310. The control motor 31 drives the driving gear plate 33 to rotate through the clamping shaft 32, and the driving gear plate 33 drives the adjusting screw 4 through the connecting gear 36. The adjusting screw 4 can achieve the effect of driving the material receiving bottom plate 5 to move downward during rotation. The material receiving bottom plate 5 is continuously moved downward according to the amount of cardboard unloading during stacking, thereby achieving the effect of ensuring that the stacking height of the topmost cardboard is always the same, so that the cardboard is always in a low-drop unloading stacking, thereby avoiding the problem of poor stability and neatness of the cardboard due to the high drop of unloading stacking.

[0033] It is worth noting that the top of the passive pressure plate 34 is slidably connected to the palletizer base 1 through the slide rod 341, the end of the positioning seat 37 is fixedly connected to the palletizer base 1, and the unloading top seat 310 is slidably connected to the palletizer base 1.

[0034] It is worth mentioning that the trigger switching device 38 includes a switching shaft 381 and a lower sliding tooth 385. The end of the switching shaft 381 is rotatably connected to the inside of the material receiving base plate 5. The switching shaft 381 is respectively fixedly connected with tooth 1 382, ​​tooth 2 383 and a switching pressure block 384. The lower sliding tooth 385 is slidably connected to the side of the fork-shaped adjustment plate 286 close to the switching shaft 381. The material receiving base plate 5 is provided with a transverse groove 386 for the lower sliding tooth 385 to slide horizontally. The lower sliding tooth 385 is restricted by the transverse groove 386 and can only move accordingly with the height of the material receiving base plate 5. The lower sliding tooth 385 always slides in the transverse groove 386 by its own gravity, and the overall height can be adjusted by the movement of the material receiving base plate 5, thereby satisfying the effect of driving the switching shaft 381 to rotate on the material receiving base plates 5 at different heights.

[0035] When the receiving bottom plate 5 falls to the platform at the bottom of the stacking machine base 1, the active motor 21 magnetically transmits the magnetic passive gear disc 23 through the magnetic driving wheel 22. The magnetic passive gear disc 23 drives the driving ring seat 284 on the sleeve shaft 283 to rotate through the key shaft 281, and then drives the adjusting crank rod 285 through the driving ring seat 284 to drive the fork-shaped adjustment plate 286 to move toward the axis of the sleeve shaft 283. The lower teeth 385 move laterally on the transverse groove 386 and contact the teeth 1 382. The teeth 1 382 is affected by the lateral movement force of the lower teeth 385 to drive the switching shaft 381 to rotate as a whole. When the switching shaft 381 rotates, it drives the switching pressure block 384 to rotate downward. During the rotation, the switching pressure block 384 can pass through the platform at the bottom of the stacking machine base 1 and contact and squeeze the passive pressure plate 34. After the passive pressure plate 34 is subjected to force, it drives the driving gear disc 33 as a whole to be stuck. The shaft 32 slides downward, and after the switching shaft 381 rotates, the switching pressure block 384 is in a state of a vertical horizontal plane. At this time, the switching pressure block 384 can achieve the purpose of positioning the passive pressure plate 34 through the effect of end abutment. At this time, the passive pressure plate 34 can be positioned at the bottom, and the driving gear plate 33 loses engagement with the connecting gear 36 after moving downward. At this time, the height of the driving gear plate 33 is flush with the height of the gear rod 39. After being flush, when the control motor 31 is working, it can control the driving gear plate 33 to engage the gear rod 39 to move, and the gear rod 39 drives the unloading top seat 310 to move as a whole in the direction of the upper and lower conveyors 6. During the movement, the unloading top seat 310 contacts and pushes the stacked cardboard on the receiving bottom plate 5 to the upper and lower conveyors 6, and the upper and lower conveyors 6 transport the stacked cardboard, thereby further achieving automated unloading of the stacked cardboard.

[0036] When the automatic cardboard palletizer of the present invention is in use, the upper and lower conveyors 6 are divided into two layers, the upper conveyor belt is used for automatic unloading of cardboard before palletizing, and the lower conveyor belt is used for unloading of cardboard after palletizing. The upper and lower conveyors 6 are provided with a baffle at the upper conveyor belt, and the cardboard is unloaded to the receiving bottom plate 5 through the upper and lower conveyors 6. The height difference between the receiving bottom plate 5 and the upper conveyor belt of the upper and lower conveyors 6 in a non-working state is small, and the problem of excessive deviation of the cardboard can be reduced during the falling period. When it is necessary to stack the cardboard, the automatic flat pressing palletizing device 2 is started, and the active motor 21 is started, and the output shaft of the active motor 21 is magnetically driven by the magnetic driving wheel 22 to drive the magnetic passive gear disc 23 rotates clockwise, and the magnetic passive toothed disc 23 is divided into two states during the rotation: the initial working state and the later working state. In the initial working state, the magnetic passive toothed disc 23 can rotate by meshing the passive gear 24 with the teeth distributed on its outer ring. At this time, the delay protrusion 232 in the inner ring of the magnetic passive toothed disc 23 gradually approaches the passive protrusion 282, and the reset protrusion 233 gradually moves away from the passive protrusion 282. The rotation of the magnetic passive toothed disc 23 does not affect the rotation of the key shaft 281, and the meshed and rotating passive gear 24 drives the screw rod 25 to rotate in the fixed sleeve rod 26. A slide groove is provided on the screw rod 25, and the fixed sleeve rod 26 limits the movement of the slide groove through the ball 261 in the internal fixed state, that is, when the screw When the rotary rod 25 rotates, the fixed sleeve rod 26 is forced to move downward, and the fixed sleeve rod 26 drives the entire pressing plate 27 to move downward. At this time, the pressing plate 27 achieves the effect of flattening the cardboard on the docking material bottom plate 5, thereby avoiding the problem of cardboard warping. In the later work, the magnetic passive toothed disc 23 loses the meshing with the passive gear 24. At this time, the magnetic passive toothed disc 23 that continues to rotate contacts the passive protrusion 282 through the internal delay protrusion 232 and drives the key shaft 281 to rotate as a whole. The key shaft 281 drives the driving ring seat 284 to rotate through the sleeve shaft 283. The driving ring seat 284 drives the fork-shaped adjustment plate 286 to move toward the axis of the sleeve shaft 283 through the adjusting crank rod 285. The fork-shaped adjustment plate 286 The position of the cardboard is adjusted during the movement toward the axis. The top of the cardboard in the stack is flattened first, and the position of the cardboard is adjusted during the flattening period, so that the stacked cardboard can be neatly stacked while avoiding the problem of cardboard warping. Since the previous pressing plate 27 will drive the driving ring seat 284 downward as a whole through the adjustment crankshaft 285 when moving downward, the driving ring seat 284 drives the sleeve shaft 283 to slide downward on the key shaft 281, and the transmission effect is still maintained after sliding. The key shaft 281 can continue to drive the driving ring seat 284 to rotate through the sleeve shaft 283, so that the pressing plate 27 can adjust the height on the fork-shaped adjustment plate 286 without affecting the subsequent movement of the fork-shaped adjustment plate 286.During operation, when the three fork-shaped adjustment plates 286 are retracted inward, the cardboards can be stacked neatly against the baffle. The operator can adjust the distance between the threaded curved rod 2853 and the curved sleeve 2851 by rotating the screw sleeve 2852, thereby achieving the effect of adjusting the specific position of the fork-shaped adjustment plates 286, so that the three fork-shaped adjustment plates 286 can adjust the position of cardboards of different sizes, thereby promoting the applicability of cardboard stacking. After the cardboards are flattened and positioned, the output shaft of the active motor 21 is controlled to rotate counterclockwise to reset. During the rotation, the three fork-shaped adjustment plates 286 and the pressing plate 27 are reset, so that during the stacking and stacking of the cardboards, each cardboard is flattened and stacked, further achieving the problem of cardboard warping affecting the neatness of stacking.

[0037] Since the height of the cardboard stacking will change during the stacking, in order to ensure that the height of the cardboard stacking and the height difference of the unloading of the upper and lower conveyors 6 remain unchanged, the drive control motor 31 is operated during the stacking of the cardboard, and the output shaft of the control motor 31 drives the driving gear plate 33 to rotate through the clamping shaft 32. During the stacking, the height of the driving gear plate 33 is affected by the spring on the elastic chassis 35 and is flush with the height of the connecting gear 36. At this time, the rotating driving gear plate 33 will drive the adjusting screw 4 to rotate through the meshing connecting gear 36. During the rotation, the adjusting screw 4 can achieve the effect of driving the material receiving bottom plate 5 to move downward. The material receiving bottom plate 5 is continuously moved downward during the stacking according to the amount of cardboard unloading, thereby achieving the effect of ensuring that the stacking height of the top cardboard is always the same, so that the cardboard is always in low-drop unloading stacking, thereby avoiding the problem of poor stability and neatness of the cardboard due to the high drop of unloading stacking. After the cardboard is quantitatively stacked, the program drives the control motor 31 to accelerate. At this time, the upper and lower conveyors 6 stop unloading, and the receiving bottom plate 5 quickly drops to the platform at the bottom of the stacking machine base 1. At this time, through the operation of the active motor 21, the active motor 21 magnetically transmits the magnetic passive gear disk 23 through the magnetic driving wheel 22. The magnetic passive gear disk 23 drives the driving ring seat 284 on the sleeve shaft 283 to rotate through the key shaft 281, and then drives the adjusting crank rod 285 through the driving ring seat 284 to drive the fork-shaped adjustment plate 286 to move toward the axis of the sleeve shaft 283. When the fork-shaped adjustment plate 286 moves toward the axis of the sleeve shaft 283, the lower teeth 385 move laterally and contact the teeth 1 382. The teeth 1 382 is affected by the lateral movement force of the lower teeth 385 to drive the switching shaft 381 to rotate as a whole. When the switching shaft 381 rotates, it drives the switching pressing block 384 to rotate downward. During the rotation, the switching pressing block 384 can The passive pressure plate 34 can pass through the platform at the bottom of the stacking machine base 1 and contact and squeeze the passive pressure plate 34. After the passive pressure plate 34 is subjected to force, it drives the driving toothed plate 33 to slide downward on the card shaft 32 as a whole. After the switching shaft 381 rotates, the switching pressure block 384 is in a vertical horizontal plane. At this time, the switching pressure block 384 can achieve the purpose of positioning the passive pressure plate 34 through the effect of end abutment. At this time, the passive pressure plate 34 can be positioned at the bottom, and the driving toothed plate 33 loses engagement with the connecting gear 36 after moving downward. At this time, the height of the driving toothed plate 33 is flush with the height of the gear rod 39. After being flush, when the control motor 31 is working, it can control the driving toothed plate 33 to engage the gear rod 39 to move, and the gear rod 39 drives the unloading top seat 310 to move as a whole in the direction of the upper and lower conveyors 6. During the movement, the unloading top seat 310 contacts and pushes the stacking cardboard on the receiving bottom plate 5 to the upper and lower conveyors 6, and the upper and lower conveyors 6 transport the stacked cardboard.After the conveying is completed, the reverse operation of the output shaft of the control motor 31 is controlled to control the unloading top seat 310 to reset and move. After the reset movement, the fork-shaped adjustment plate 286 is driven to move and reset by the control of the active motor 21 again. During the movement and reset of the fork-shaped adjustment plate 286, the lower teeth 385 are used to contact the second teeth 383 to control the switching shaft 381 to rotate and reset as a whole. After the rotation and reset, the switching pressure block 384 loses the restriction on the passive pressure plate 34, and the driving toothed disc 33 is reset in height through the spring force on the elastic chassis 35, and the meshing effect with the connecting gear 36 is achieved again. At this time, the control motor 31 is driven to work again, so that the driving toothed disc 33 drives the adjusting screw 4 on the connecting gear 36 to rotate, and then controls the material receiving bottom plate 5 to quickly reset upward to carry out the next round of cardboard stacking.

[0038] The above implementation methods are only used to illustrate the embodiments of the present invention, and are not limitations of the embodiments of the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present invention. The patent protection scope of the embodiments of the present invention should be defined by the claims.

Claims

1. A cardboard automatic palletizer, characterized in that: include A palletizer base (1), wherein an automatic flattening and pressing palletizing device (2) is arranged on the top of the palletizer base (1), an adjusting screw (4) is rotated inside the palletizer base (1), a material receiving bottom plate (5) is threadedly connected to the adjusting screw (4), the material receiving bottom plate (5) is used to sequentially receive cardboards, and the automatic flattening and pressing palletizing device (2) is used to sequentially flatten and align the cardboards on the material receiving bottom plate (5) for palletizing; An upper and lower conveyor (6), the upper and lower conveyor (6) being arranged on one side of the palletizer base (1) and used for conveying cardboards before and after palletizing; A cardboard stacking height adjustment and unloading device (3) is arranged at the bottom of the stacking machine base (1) and is used to adjust the height of the material receiving bottom plate (5), adjust the height difference between the stacking cardboard and the upper and lower conveyors (6), and unload the stacked cardboard.

2. The automatic cardboard palletizer according to claim 1, characterized in that: The automatic flat-pressing palletizing device (2) comprises an active motor (21) and an adjustment device (28); the end of the active motor (21) is mounted inside the top of the palletizing machine base (1); the output shaft of the active motor (21) is clamped with a magnetic driving wheel (22); the end of the magnetic driving wheel (22) is magnetically driven with a magnetic passive toothed disc (23); the surface of the magnetic passive toothed disc (23) is meshed with a passive gear (24); the interior of the passive gear (24) is fixedly connected with a spiral rod (25); the surface of the spiral rod (25) is slidably connected with a fixed sleeve rod (26); the bottom end of the fixed sleeve rod (26) is fixedly connected with a pressing plate (27).

3. The automatic cardboard palletizer according to claim 2, characterized in that: A plurality of magnets with positive and negative magnetic poles arranged alternately are distributed in a circular array inside the magnetic driving wheel (22) and the magnetic passive toothed disc (23). A sliding shaft (231) is fixedly connected to the magnetic passive toothed disc (23). The sliding shaft (231) is slidably connected to the inside of the palletizer base (1). The top end of the screw rod (25) is rotatably connected to the palletizer base (1). The inside of the fixed sleeve rod (26) is slidably connected to the screw rod (25) via a ball bearing (261).

4. The automatic cardboard palletizer according to claim 2, characterized in that: The adjustment device (28) comprises a key shaft (281), the top end of the key shaft (281) is rotatably connected to the palletizer base (1), a passive protrusion (282) is fixedly connected to the key shaft (281), a sleeve shaft (283) is slidably connected to the surface of the key shaft (281), a driving ring seat (284) is fixedly connected to the surface of the sleeve shaft (283), an adjusting bent rod (285) is slidably connected inside the driving ring seat (284), and a fork-shaped adjusting plate (286) is fixedly connected to the bottom end of the adjusting bent rod (285).

5. The automatic cardboard palletizer according to claim 4, characterized in that: The bottom end of the sleeve shaft (283) is rotatably connected to the pressure plate (27), the surface of the adjustment bent rod (285) is slidably connected to the pressure plate (27), and the top of the fork-shaped adjustment plate (286) is slidably connected to the inner wall of the pressure plate (27).

6. The automatic cardboard palletizer according to claim 4, characterized in that: The adjusting bent rod (285) comprises a bent sleeve (2851), the surfaces of the bent sleeve (2851) are respectively slidably connected inside the driving ring seat (284) and the pressure plate (27), the end of the bent sleeve (2851) is rotatably connected to a screw sleeve (2852), the internal thread of the screw sleeve (2852) is connected to a threaded bent rod (2853), and the end of the threaded bent rod (2853) is fixedly connected to the top of the fork-shaped adjustment plate (286).

7. The automatic cardboard palletizer according to claim 4, characterized in that: The inner ring of the magnetic passive toothed disc (23) is respectively provided with a delay protrusion (232) and a reset protrusion (233); the passive protrusion (282) is located between the delay protrusion (232) and the reset protrusion (233); and the surface of the passive protrusion (282) is connected to the surface of the reset protrusion (233).

8. The automatic cardboard palletizer according to claim 1, characterized in that: The cardboard stacking height adjustment and unloading device (3) comprises a control motor (31), a positioning seat (37) and a trigger switching device (38). The end of the control motor (31) is mounted on the bottom of the stacking machine seat (1). The output shaft of the control motor (31) is clamped with a clamping shaft (32). The surface of the clamping shaft (32) is slidably connected to a driving gear disc (33). The top and bottom ends of the driving gear disc (33) are rotatably connected to a passive pressure plate (34) and an elastic bottom plate (35) respectively. The surface of the driving gear disc (33) is meshed with a connecting gear (36). The interior of the positioning seat (37) is slidably connected to a gear rod (39). The end of the gear rod (39) is fixedly connected to a unloading top seat (310).

9. The automatic cardboard palletizer according to claim 8, characterized in that: The top of the passive pressure plate (34) is slidably connected to the palletizer base (1) via a slide rod (341), the bottom end of the elastic base plate (35) is elastically connected to the palletizer base (1) via a spring, the connecting gear (36) is fixedly connected to the adjusting screw (4), the end of the positioning seat (37) is fixedly connected to the palletizer base (1), and the unloading top seat (310) is slidably connected to the palletizer base (1).

10. The automatic cardboard palletizer according to claim 8, characterized in that: The trigger switching device (38) comprises a switching shaft (381) and a lowering tooth (385); the end of the switching shaft (381) is rotatably connected to the inside of the material receiving bottom plate (5); the switching shaft (381) is respectively fixedly connected with a tooth 1 (382), a tooth 2 (383) and a switching pressure block (384); the lowering tooth (385) is slidably connected to a side of a fork-shaped adjustment plate (286) close to the switching shaft (381); and the material receiving bottom plate (5) is provided with a transverse groove (386) for the lowering tooth (385) to slide horizontally.

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