Automatic carton stacking machine

Abstract

The application relates to the technical field of stacking equipment, in particular to an automatic finished paper box stacking machine, which comprises a conveying mechanism, a carrying mechanism and a transfer mechanism, the upper portion of the transfer mechanism is provided with a stacking seat, the side of the transfer mechanism is provided with a stacking positioning assembly, the side of the carrying mechanism is provided with a stabilizing assembly, the upper portion of the stacking positioning assembly is provided with a pull-down assembly, the stabilizing assembly comprises a placing table arranged at the side of the carrying mechanism, the upper portion of the placing table is provided with a top pressing plate, the inner wall of the top pressing plate is rotationally connected with a center rod, the outer surface of the center rod is wound with a wire rope, one end of the wire rope away from the center rod is fixedly connected with a horizontal plate, and the bottom end of the horizontal plate is fixedly connected with a hook. The stabilizing assembly is arranged at the upper portion of the paper box stack, the pull-down assembly is used to drive the stabilizing assembly to be unfolded, the paper box stack is bound and locked, the stability of the paper box stack is improved, and the situation that the paper box stack is inclined and falls during the transfer process is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stacking equipment, in particular to a finished carton automatic stacking machine. BACKGROUND

[0002] Cartons are packaging containers made of corrugated paperboard, with characteristics of low cost, light weight, easy processing, recyclability, etc. The stacking machine is an automatic stacking equipment after carton production, usually composed of a mechanical arm, a conveying system, a control system, etc. Through sensors and programs, the carton can be accurately positioned and grabbed, and the carton can be neatly stacked according to the set arrangement and number of layers, improving production efficiency and reducing labor intensity.

[0003] According to the search, according to the public number CN117104641B, a kind of intelligent stacking machine for carton production, including stacking machine, placing plate, first conveying belt, bundling machine and third conveying belt, further including disassembling mechanism, disassembling mechanism includes, support extrusion component, drive assembly, first blade, for cutting off the adhesive tape pasted on outer rocker after two inner rockers of carton folding, second blade, for cutting off the adhesive tape pasted on outer rocker corresponding part with inner rocker after carton folding, carton is to support extrusion component by first conveying belt, drive assembly controls first, second, third blade in turn cutting off outer rocker and side adhesive tape, then be flattened, after being accumulated in third conveying belt, by bundling machine packing, again by stacking machine clamping and placing to placing plate, complete old carton recycling collection.

[0004] The above-mentioned patent still has some shortcomings in actual use. The cartons need to be stacked during stacking. The cartons are loose after folding due to the existence of creases, and are not in a compact state, which causes the stability of the stacked cartons to be not high, especially after stacking. The transfer device itself will have a small amplitude of shaking during operation, and the stacked cartons have a risk of falling during transfer.

[0005] Based on this, the present application discloses a kind of finished carton automatic stacking machine. SUMMARY

[0006] To solve the problem of loose stacking of cartons due to creases, poor stacking stability, small shaking of the device during transfer, and the risk of falling of the stacked cartons during transfer, the present application provides a kind of finished carton automatic stacking machine, which includes conveying mechanism, handling mechanism and transfer mechanism, the upper part of the transfer mechanism is provided with a stacking seat;

[0007] The side of the transfer mechanism is provided with a stacking positioning assembly, the side of the handling mechanism is provided with a stabilizing assembly, and the upper part of the stacking positioning assembly is provided with a pulling-down assembly.

[0008] The code positioning assembly comprises a lifting gantry arranged at the side of the transfer mechanism, the inner side of the lifting gantry is provided with a lifting table, and the side of the lifting table is fixedly connected with an extension table.

[0009] The stable assembly comprises a placing table arranged at the side of the carrying mechanism, the upper part of the placing table is provided with a pressing plate, the inner wall of the pressing plate is rotatably connected with a center rod, the outer surface of the center rod is wound with a wire rope, the end of the wire rope away from the center rod is fixedly connected with a horizontal plate, and the bottom end of the horizontal plate is fixedly connected with a hook.

[0010] The middle part of the pressing plate is provided with a reset assembly, the reset assembly comprises a push rod movably inserted into the middle part of the outer surface of the pressing plate, the end of the push rod extending into the inside of the pressing plate is fixedly connected with a circular plate, and the upper surface of the circular plate is provided with an arc-shaped groove.

[0011] Since the paper boxes cannot be placed neatly on the code seat by the carrying mechanism during the stacking process, the paper boxes will deviate during the stacking process and are easy to fall off, so that the positioning treatment is performed on each layer to ensure the neatness of the paper box stacking.

[0012] As a further improvement of the technical scheme, the upper part of the lifting table is provided with a hydraulic rod, the side of the extension table away from the lifting table is provided with a horizontal positioning clamp, and the inner side of the horizontal positioning clamp is provided with a vertical positioning clamp.

[0013] On this basis, since the paper boxes will be relatively loose after folding due to the existence of creases, and the loose will be enlarged when a plurality of paper boxes are stacked on the code seat, resulting in low stability of the stacked paper box pile, in order to improve the stability of the paper box pile.

[0014] As a further improvement of the technical scheme, the pressing plate is composed of two horizontal rods and two vertical rods to form an I-shaped structure, the side of the code seat is fixedly connected with a hanging plate, the side end of the pressing plate is fixedly connected with a guide pipe, the guide pipe is designed as a ninety-degree bent pipe, the end of the guide pipe away from the pressing plate abuts against the upper surface of the horizontal plate, and the wire rope passes through the inside of the guide pipe.

[0015] As a further improvement of the technical scheme, the bent part of the hook is rotatably connected with a movable hook, the movable hook and the hook are reset by a spring, the middle part of the outer surface of the center rod is fixedly sleeved with a clockwork spring, and the end of the clockwork spring away from the center rod is fixedly connected to the inner wall of the pressing plate.

[0016] As a further improvement of the technical solution, the lower pulling assembly comprises a side plate fixedly connected to the upper surface of the extension table, an outer surface of the side plate is provided with a track opposite to one side of the pressing plate, an inner wall of the track is rotatably connected with a support plate, an outer surface of a rotating shaft of the support plate is sleeved with a torsional spring, and one end of the torsional spring away from the rotating shaft is fixedly connected to the inner wall of the track.

[0017] In another scheme, since the paper box stack needs to be processed after being transferred to the designated position, the paper box stack has a certain height, which is not convenient for disassembling the stabilizing assembly, and the power of the line rope recovery after the disassembly of the hook is easy to swing the hook, which is dangerous. In order to facilitate the disassembly of the stabilizing assembly and improve the safety during disassembly,

[0018] As a further improvement of the technical solution, the inside of the arc-shaped groove is limited to slide with a lock rod, the lock rod is movably inserted into the inner side of the pressing plate, and one end of the lock rod away from the circular plate points to the center rod.

[0019] As a further improvement of the technical solution, the outer surface of the center rod is fixedly sleeved with a ratchet wheel, and the lock rod is clamped in the tooth gap of the ratchet wheel.

[0020] As a further improvement of the technical solution, the outer surface of the push rod is provided with a return spring, and one end of the return spring away from the push rod is fixedly connected to the inner wall of the pressing plate.

[0021] Since the position of the pressing plate placed on the extension table by the carrying mechanism is not determined, slight deviation will cause the horizontal plate to be unable to slide into the track, thereby causing the pressing plate to be unable to be pressed, in order to ensure that the pressing plate is in the central position, a sliding groove is formed in the upper surface of the extension table, the sliding groove is provided with two and is symmetrically arranged with the axis of the extension table, and the hook slides along the sliding groove.

[0022] As a further improvement of the technical solution, the cross section of the sliding groove is designed as a right trapezoid, and the two sliding grooves are arranged opposite to the track.

[0023] Compared with the prior art, the present application has the following advantages:

[0024] 1. In the finished paper box automatic stacking machine, the stabilizing assembly is arranged at the upper part of the paper box stack, the lower pulling assembly is used to drive the stabilizing assembly to expand, the paper box stack is bound and locked, the stability of the paper box stack is improved, and the situation of tilting and falling during the transfer process is avoided.

[0025] 2. In the finished paper box automatic stacking machine, the reset assembly is arranged, after the movable hook is manually removed, the carrying mechanism triggers the reset assembly during the process of clamping the pressing plate, the winding of the line rope and the upward movement of the horizontal plate are realized, at this time there is no worker around, the danger is eliminated, and the purpose of disassembling the stabilizing assembly is achieved.

[0026] 3. In this type of automatic palletizing machine for finished cartons, by setting a chute, when the top pressure plate is placed on the extension table, the right-angled trapezoidal design of the chute allows it to slide down along the inclined inner wall of the chute to the middle position at the bottom of the chute even when the hook position is slightly offset, thus achieving the centering of the position. The hydraulic rod pushes the top pressure plate to slide along the chute to connect with the pull-down assembly. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the transfer mechanism of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the palletizing and positioning component of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the extension stage of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the stabilizing component of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure of the stabilizing component and the resetting component of the present invention.

[0033] Figure 7 This is a schematic diagram of the hook structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the pull-down component of the present invention;

[0035] Figure 9 This is a schematic diagram of the structure of the reset component of the present invention.

[0036] The meanings of the labels in the diagram are as follows:

[0037] 1. Conveying mechanism; 2. Handling mechanism; 3. Transfer mechanism; 4. Palletizing and positioning assembly; 5. Stabilizing assembly; 6. Pull-down assembly; 7. Reset assembly; 8. Slide rail; 9. Palletizing base;

[0038] 41. Lifting gantry frame; 42. Lifting platform; 43. Extension platform; 44. Hydraulic rod; 45. Lateral positioning clamp; 46. Longitudinal positioning clamp;

[0039] 51. Placement platform; 52. Top pressure plate; 53. Center rod; 54. Guide tube; 55. Horizontal plate; 56. Rope; 57. Clockwork spring; 58. Hook; 59. Movable hook; 510. Hanging plate;

[0040] 61. Side plate; 62. Track; 63. Support plate; 64. Torsion spring;

[0041] 71. Push rod; 72. Circular plate; 73. Arc groove; 74. Locking rod; 75. Ratchet; 76. Return spring. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Existing cardboard boxes are prone to falling off during transport due to creases that cause them to become loose when stacked. This results in poor stacking stability, and even slight vibrations in the transport equipment can cause the stacked boxes to fall off during transport.

[0044] Therefore, the present invention provides an automatic palletizing machine for finished cartons. See [link to relevant documentation]. Figure 1 and Figure 2 As shown, it includes a conveying mechanism 1, a handling mechanism 2 and a transfer mechanism 3. The handling mechanism 2 is located at the junction of the conveying mechanism 1 and the transfer mechanism 3, and a stacking seat 9 is provided on the upper part of the transfer mechanism 3.

[0045] During operation, the product, namely the cardboard box, is moved along the conveyor mechanism 1 to the transfer mechanism 3. At this time, the handling mechanism 2 operates to pick up the stacked and bundled cardboard boxes, place them on the top of the palletizing seat 9, and stack them to achieve single-volume transfer. This realizes the automatic palletizing of cardboard boxes. When the number of cardboard boxes stacked on the palletizing seat 9 reaches the predetermined value, the transfer mechanism 3 starts to operate, transporting the palletizing seat 9 together with the cardboard boxes to the next process.

[0046] Further, see Figure 2 and Figure 3 As shown, during the stacking process, the handling mechanism 2 cannot neatly place the cartons on the stacking base 9. The cartons will shift and fall easily during the stacking process. In order to ensure the neatness of the cartons stacking, each layer is positioned. This application adopts a stacking positioning component 4 on the side of the transfer mechanism 3. The stacking positioning component 4 acts on the cartons stacked on the stacking base 9.

[0047] Specifically, the palletizing positioning component 4 includes a lifting gantry 41 disposed on the side of the transfer mechanism 3, a lifting platform 42 disposed on the inner side of the lifting gantry 41, an extension platform 43 fixedly connected to the side of the lifting platform 42, a hydraulic rod 44 disposed on the upper part of the lifting platform 42, a transverse positioning clamp 45 disposed on the side of the extension platform 43 away from the lifting platform 42, and a longitudinal positioning clamp 46 disposed on the inner side of the transverse positioning clamp 45.

[0048] During operation, after the handling mechanism 2 places the cartons on the palletizing base 9 and fills one layer, the lifting gantry 41 operates, driving the lifting platform 42 to rise to a position flush with the current carton layer. Then, the horizontal positioning clamp 45 moves towards the center to clamp and position the carton layer horizontally. Then, the vertical positioning clamp 46 moves towards the center to clamp and position the carton layer vertically. The horizontal and vertical positioning are performed simultaneously, thus gathering the cartons placed on the same layer towards the center, making the cartons neatly arranged on the palletizing base 9.

[0049] Furthermore, see Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the presence of creases in the cardboard boxes will cause them to be relatively loose after folding. Stacking multiple cardboard boxes on the palletizing base 9 will amplify this looseness, resulting in low stability of the stacked cardboard boxes. In order to improve the stability of the cardboard box stack, this application adopts a stabilizing component 5 on the side of the handling mechanism 2 and a pull-down component 6 on the upper part of the palletizing positioning component 4.

[0050] Specifically, the stabilizing component 5 includes a placement platform 51 located on the side of the conveying mechanism 2. A top pressure plate 52 is mounted on the upper part of the placement platform 51. The top pressure plate 52 consists of an I-shaped structure formed by two horizontal bars and two vertical bars. A central rod 53 is rotatably connected to the inner wall of the top pressure plate 52. A rope 56 is wound around the outer surface of the central rod 53. A horizontal plate 55 is fixedly connected to the end of the rope 56 away from the central rod 53. A hook 58 is fixedly connected to the bottom end of the horizontal plate 55. A movable hook 59 is rotatably connected to the bend of the hook 58. A spring is used to reset the hook 59 and the hook 58. A hanging plate 510 is fixedly connected to the side of the stacking base 9. A guide tube 54 is fixedly connected to the side end of the top pressure plate 52. The guide tube 54 is designed as a 90-degree bent tube. The end of the guide tube 54 away from the top pressure plate 52 abuts against the upper surface of the horizontal plate 55. The rope 56 passes through the inside of the guide tube 54. A spring spring 57 is fixedly sleeved in the middle of the outer surface of the center rod 53. The end of the spring spring 57 away from the center rod 53 is fixedly connected to the inner wall of the top pressure plate 52.

[0051] Secondly, the pull-down assembly 6 includes a side plate 61 fixedly connected to the upper surface of the extension platform 43. A track 62 is provided on the outer surface of the side plate 61 facing the top pressure plate 52. A support plate 63 is rotatably connected to the inner wall of the track 62. A torsion spring 64 is sleeved on the outer surface of the pivot of the support plate 63. The end of the torsion spring 64 away from the pivot is fixedly connected to the inner wall of the track 62.

[0052] During operation, once the cartons on the palletizer 9 have stacked to a specified quantity, the conveying mechanism 2 clamps both sides of the top pressure plate 52 and moves the entire structure to the upper surface of the extension table 43. Then, the hydraulic rod 44 pushes it above the stacked cartons. During this pushing process, the horizontal plate 55 engages with the track 62 and slides along it. When the top pressure plate 52 is pushed directly above the cartons, it stops, and the hydraulic rod 44 retracts. Then, the lifting gantry 41 drives the lifting table 42 to fall. During the fall, the side plate 61 pushes the horizontal plate 55, causing it to move downwards. The downward movement of the horizontal plate 55 pulls the rope 56, causing the center rod 53 to rotate under the pull of the rope 56, releasing it. Simultaneously, the rotation of the center rod 53 also compresses the spring 57, causing it to store elastic potential energy. When the horizontal plate 55 is pushed close to the palletizer 9, the hook 58 at the bottom of the horizontal plate 55 first contacts the hanging plate 510. Due to... The rotating characteristic of the movable hook 59 is that it will rotate towards the hook 58 after contacting the hanging plate 510. After the movable hook 59 passes the hanging plate 510, it will rotate back under the action of the spring, thus placing itself directly below the hanging plate 510. At this time, the lifting gantry 41 stops pushing the horizontal plate 55 and instead begins to move upward. The support plate 63 moves upward and generates mutual thrust with the horizontal plate 55, which in turn pushes the support plate 63 to rotate and drives the torsion spring 64 to rotate. After the support plate 63 rises and moves away from the horizontal plate 55, the torsion spring 64 rebounds and drives the support plate 63 to return to its original position. Because the movable hook 59 is engaged at the bottom of the hanging plate 510, it has a pulling limit function. At the same time, with the rebound force of the spring spring 57, it forces the top pressure plate 52 to press the carton. The rope 56 is placed on the side of the stacked carton and also has a binding force. In this way, the stacked carton is fixed, which improves the stability of the carton stack and prevents it from tilting and falling during transportation.

[0053] In addition, see Figure 5 , Figure 6 and Figure 9 As shown, since the cardboard stack needs to be processed after being transferred to the designated location, the cardboard stack has a certain height, which makes it inconvenient to disassemble the stabilizing component 5. Moreover, the power of the rope 56 after disassembling the movable hook 59 can easily cause the hook 58 to swing, which is dangerous. In order to facilitate the disassembly of the stabilizing component 5 and improve the safety during the disassembly process, this application adopts a reset component 7 in the middle of the top pressure plate 52, and the reset component 7 acts on the central rod 53.

[0054] Specifically, the reset assembly 7 includes a push rod 71 that is movably inserted into the middle of the outer surface of the top pressure plate 52. One end of the push rod 71 that extends into the interior of the top pressure plate 52 is fixedly connected to a circular plate 72. An arc-shaped groove 73 is provided on the upper surface of the circular plate 72. A locking rod 74 is movably inserted into the inner side of the top pressure plate 52. The end of the locking rod 74 away from the circular plate 72 points towards the center rod 53. A ratchet 75 is fixedly sleeved on the outer surface of the center rod 53. The locking rod 74 is engaged in the gap between the teeth of the ratchet 75. A reset spring 76 is provided on the outer surface of the push rod 71. The end of the reset spring 76 away from the push rod 71 is fixedly connected to the inner wall of the top pressure plate 52.

[0055] During operation, when the carton is covered and secured, the ratchet 75 rotates with the center rod 53. The inclined edge of the ratchet 75's teeth will push the locking rod 74, forcing the locking rod 74 to move away from the ratchet 75. After the movable hook 59 is engaged with the lower part of the hanging plate 510, the rebound force of the spring 57 will cause the center rod 53 to tend to rotate in the opposite direction. The ratchet 75's reverse rotation will be limited by the locking rod 74. Thus, after the worker removes the movable hook 59 from under the hanging plate 510, the center rod 53 cannot rotate because of the limitation of the ratchet 75 and the locking rod 74. After the worker moves away, the conveying mechanism 2 clamps the two sides of the top pressure plate 52. The clamping part of the conveying mechanism 2 will squeeze the push rod 71, which will then push the push rod 71. Sliding and pressing the reset spring 76 causes the push rod 71 to slide, which in turn moves the circular plate 72. This causes the locking rod 74 to slide along the arc groove 73 and move away from the ratchet 75. After the ratchet 75 loses the limit of the locking rod 74, the spring spring 57 will cause the center rod 53 to reverse under the action of the spring force, which will then wind up the rope 56. The rope 56 pulls the horizontal plate 55 upward to achieve reset. At this time, there are no workers around. The swinging force generated by the rapid winding of the rope 56 will not hit the workers when the horizontal plate 55 swings upward, eliminating the danger and achieving the purpose of disassembling the stabilizing component 5. The conveying mechanism 2 clamps the top pressure plate 52 and moves it to the placement platform 51, realizing the recovery of the stabilizing component 5 for subsequent use.

[0056] In addition, see Figure 2 , Figure 3 and Figure 4 As shown, since the position of the top pressure plate 52 placed on the extension table 43 by the conveying mechanism 2 is uncertain, a slight offset will cause the horizontal plate 55 to fail to slide into the track 62, thus making it impossible to press down the horizontal plate 55. In order to ensure that the top pressure plate 52 is in the center position, this application adopts a groove 8 on the upper surface of the extension table 43.

[0057] Specifically, two slides 8 are provided and are symmetrically arranged about the axis of the extension platform. The hook 58 slides along the slide 8. The cross-section of the slide 8 is designed as a right trapezoid. The two slides 8 are set opposite to the track 62.

[0058] During operation, the conveying mechanism 2 clamps the top pressure plate 52 and places it on the upper surface of the extension table 43. When the placement of the conveying mechanism 2 is slightly off, in conjunction with the right-angled trapezoidal design of the slide 8, the hook 58 does not fall directly into the bottom of the slide 8. When it falls on the inclined side of the slide 8, it will slide into the bottom of the slide 8 under its own gravity, thus achieving the centering of the position. Then, when the hydraulic rod 44 pushes the top pressure plate 52, the hook 58 will slide along the slide 8 to achieve the guiding function, making it easy for the horizontal plate 55 to slide into the track 62, thus achieving the engagement of the stabilizing component 5 and the pull-down component 6.

[0059] In summary, by setting the stabilizing component 5 and the pull-down component 6 together to lock the carton stack, and using the reset component 7 to achieve the safe reset of the stabilizing component 5, the problem of existing cartons being loose after stacking due to creases, poor stacking stability, and the risk of the stacked cartons falling off during transportation due to slight vibrations of the device during transportation can be effectively solved.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic palletizing machine for finished cartons, comprising a conveying mechanism (1), a handling mechanism (2), and a transfer mechanism (3), wherein a palletizing base (9) is provided on the upper part of the transfer mechanism (3), characterized in that: The side of the transfer mechanism (3) is provided with a palletizing positioning component (4), the side of the handling mechanism (2) is provided with a stabilizing component (5), and the upper part of the palletizing positioning component (4) is provided with a pull-down component (6). The palletizing positioning component (4) includes a lifting gantry (41) set on the side of the transfer mechanism (3), a lifting platform (42) is set on the inner side of the lifting gantry (41), and an extension platform (43) is fixedly connected to the side of the lifting platform (42). The stabilizing component (5) includes a placement platform (51) located on the side of the conveying mechanism (2). A top pressure plate (52) is provided on the upper part of the placement platform (51). A central rod (53) is rotatably connected to the inner wall of the top pressure plate (52). A rope (56) is wound around the outer surface of the central rod (53). A horizontal plate (55) is fixedly connected to one end of the rope (56) away from the central rod (53). A hook (58) is fixedly connected to the bottom end of the horizontal plate (55). A reset assembly (7) is provided in the middle of the top pressure plate (52). The reset assembly (7) includes a push rod (71) that is movably inserted in the middle of the outer surface of the top pressure plate (52). One end of the push rod (71) that extends into the inside of the top pressure plate (52) is fixedly connected to a circular plate (72). An arc groove (73) is provided on the upper surface of the circular plate (72). A locking rod (74) is slidably limited inside the arc groove (73). The locking rod (74) is movably inserted in the inner side of the top pressure plate (52). The end of the locking rod (74) away from the circular plate (72) points to the center rod (53). A ratchet (75) is fixedly sleeved on the outer surface of the center rod (53). The locking rod (74) is engaged in the gap of the teeth of the ratchet (75).

2. The automatic palletizing machine for finished cartons according to claim 1, characterized in that: The upper part of the lifting platform (42) is provided with a hydraulic rod (44), and the side of the extension platform (43) away from the lifting platform (42) is provided with a transverse positioning clamp (45), and the inner side of the transverse positioning clamp (45) is provided with a longitudinal positioning clamp (46).

3. The automatic palletizing machine for finished cartons according to claim 1, characterized in that: The top pressure plate (52) is composed of two horizontal bars and two vertical bars forming an I-shaped structure. The side of the stacking base (9) is fixedly connected to a hanging plate (510). The side end of the top pressure plate (52) is fixedly connected to a guide tube (54). The guide tube (54) is designed as a 90-degree bent tube. The end of the guide tube (54) away from the top pressure plate (52) abuts against the upper surface of the horizontal plate (55). The rope (56) passes through the inside of the guide tube (54).

4. The automatic palletizing machine for finished cartons according to claim 3, characterized in that: The hook (58) is rotatably connected to a movable hook (59) at the bend. A spring is used to reset the movable hook (59) and the hook (58). A spring spring (57) is fixedly sleeved on the middle of the outer surface of the center rod (53). The end of the spring spring (57) away from the center rod (53) is fixedly connected to the inner wall of the top pressure plate (52).

5. The automatic palletizing machine for finished cartons according to claim 1, characterized in that: The pull-down assembly (6) includes a side plate (61) fixedly connected to the upper surface of the extension platform (43). A track (62) is provided on the outer surface of the side plate (61) facing the top pressure plate (52). A support plate (63) is rotatably connected to the inner wall of the track (62). A torsion spring (64) is sleeved on the outer surface of the pivot of the support plate (63). The end of the torsion spring (64) away from the pivot is fixedly connected to the inner wall of the track (62).

6. The automatic palletizing machine for finished cartons according to claim 1, characterized in that: A return spring (76) is provided on the outer surface of the push rod (71), and the end of the return spring (76) away from the push rod (71) is fixedly connected to the inner wall of the top pressure plate (52).

7. The automatic palletizing machine for finished cartons according to claim 1, characterized in that: The upper surface of the extension platform (43) is provided with a sliding groove (8), and two sliding grooves (8) are provided and are symmetrically arranged with respect to the axis of the extension platform (43). The hook (58) slides along the sliding groove (8).

8. The automatic palletizing machine for finished cartons according to claim 7, characterized in that: The cross-section of the slide (8) is designed as a right trapezoid, and the two slides (8) are set opposite to the track (62).

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