A conveying and stacking integrated device for packaging cartons

Abstract

The application relates to the field of conveying and stacking devices, and discloses a conveying and stacking integrated device for packaging cartons, which comprises a shell, the inside of the shell is provided with a stacking mechanism for stacking cartons, and the inside of the shell is also provided with a fixed conveying belt for assisting the stacking mechanism to stack and convey cartons in bundles; one side of the fixed conveying belt is provided with a movable conveying belt for conveying the stacked cartons; the extraction plate and the supporting plate are synchronously extracted from below the cartons in bundles, so that the cartons stably fall in a horizontal posture above the fixed conveying belt for stacking work; and the supporting plate is separated from the cartons only at the moment when the extraction plate is separated from the cartons, so that the cartons are placed in a horizontal state before falling, and deviation caused by the cartons falling in an inclined state above the fixed conveying belt for stacking is avoided.

Description

Technical Field

[0001] This invention relates to the field of conveying and stacking devices, specifically to an integrated conveying and stacking device for packaging cartons. Background Technology

[0002] After the packaging cartons are produced, multiple cartons need to be stacked and bundled together, then multiple bundles of cartons are stacked and bundled together, and finally multiple stacks of cartons are stacked on a pallet. This effectively improves space utilization and makes it easier for vehicles to transport them to the packaging plant.

[0003] In current technology, when stacking bundled cardboard boxes into a stack, a stacker crane is usually used: after the bundled cardboard boxes are sent into the work station, they are supported by an extended movable drawer, and the two sides of the cardboard boxes are limited by L-shaped baffles on the outside of the drawer. Then, the drawer is controlled to gradually retract backward until the bundled cardboard boxes fall onto the conveyor belt. After the cardboard boxes fall, the conveyor belt will adaptively move downward. Then, the above operation is repeated to complete the stacking of bundled cardboard boxes into a stack. After the stacked cardboard boxes are stacked, they are aligned and transported by the conveyor belt to the bundling area. However, when the drawer retracts to half the size of the carton below, the side of the carton that is not in contact with the drawer will lose support and fall first, while the other side will be tilted at an angle to the drawer. Only after the drawer continues to move and completely detaches from the carton will the carton fall. The movement of the drawer under the tilted carton will cause the carton to be slightly moved by the movement of the drawer, resulting in a misalignment between the falling carton and the stacked carton below. As the bundled cartons are continuously stacked, the stacked cartons will eventually form a skewed, high-center-of-gravity column. When the boxes are transferred to another conveyor belt and transported to the bundling area, the stacks of boxes are prone to significant shaking, which amplifies the positional deviation between the boxes and can even cause the stacks of boxes to collapse during the transfer process. In view of this, the present invention provides an integrated conveying and stacking device for packaging cartons. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an integrated conveying and stacking device for packaging cartons, which solves the problem that deviations occur between cartons when existing well-type stackers stack packaging cartons, leading to collapses during subsequent conveying.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An integrated conveying and stacking device for packaging cartons includes a housing, inside which is a stacking mechanism for stacking cartons, and inside which is a fixed conveyor belt for assisting the stacking mechanism in stacking and conveying bundles of cartons. A movable conveyor belt is provided on one side of the fixed conveyor belt for conveying the cartons after stacking. The stacking mechanism includes a drawer plate and a support plate that are slidably connected to the outer shell. Racks are fixedly connected to both sides of the drawer plate. A gear is driven by the racks on the side of the drawer plate away from the support plate. A cam is splinedly connected to one side of the gear. A moving rod is slidably contacted on one side of the cam. The rotation of the gear drives the moving rod slidably contacted on one side of the cam to disengage the support plate from the carton. The support plate and the moving rod are movably connected.

[0006] Preferably, the drawer has a groove inside, and multiple rotating rollers that roll in contact with the carton are rotatably connected inside the groove.

[0007] Preferably, a reset spring is provided below the moving rod to assist it in resetting, the support plate and the rack are slidably connected to the outer shell, and a feed port for feeding the carton to the top of the drawer is provided on one side of the outer shell.

[0008] Preferably, the interior of the outer shell is further provided with a limiting mechanism for assisting the stacking mechanism in stacking cartons. The limiting mechanism includes a limiting plate located above the cartons and directly attached to their upper surface. An externally driven upper pressure rod is provided above the limiting plate. Wedges are provided on both sides of the upper pressure rod. The wedges can drive the cam to slightly displace on one side of the gear.

[0009] Preferably, a push rod is fixedly connected between the limiting plate and the upper pressure rod, and inclined rods are rotatably connected to both ends of the upper pressure rod, with the inclined rods and wedges being rotatably connected.

[0010] Preferably, the inclined surface of the wedge is slidably engaged with a sliding column, one end of which is movably connected to a cam, and a buffer spring is provided at the sliding position of the wedge and the sliding column.

[0011] Preferably, the downward stroke distance of the limiting plate is less than the outward stroke distance of the pull plate, and the inclined rod can rotate around the center point of the wedge block by a certain angle.

[0012] Preferably, a pull controller for driving the pull plate to be pulled out inside the housing is provided on one side of the housing, and a lifting platform for controlling its lifting and lowering is provided below the fixed conveyor belt.

[0013] Preferably, the gear is located on one side of the feed inlet and has a distance between it and the inner side of the fixed conveyor belt. The gear is rotatably connected to the housing, and the horizontal line of the teeth below the rack intersects horizontally with the arc line of the outer ring teeth of the gear.

[0014] Preferably, the limiting plate is made of a highly resilient material, the wedge is slidably engaged with the outer shell, and the pair of diagonal bars are located on the outside of the carton.

[0015] This invention provides an integrated conveying and stacking device for packaging cartons. It has the following advantages: This invention incorporates a drawer and a support plate, which are simultaneously pulled out from under bundled cartons. This allows the cartons to fall horizontally and stably onto a fixed conveyor belt for stacking. The support plate only detaches from the cartons the instant the drawer separates from them, ensuring that the cartons are placed horizontally before falling. This prevents deviations that might occur when the cartons fall at an angle onto the conveyor belt. The limiting plate further enhances the horizontal position of the cartons and allows for precise control of the timing of the support plate's withdrawal from under the cartons. This better coordinates with the drawer for stacking, effectively ensuring the stability of the subsequent stacking and conveying of the cartons. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a partial schematic diagram of the stacking mechanism of the present invention; Figure 4 This is a side view schematic diagram of the drawer plate and support plate of the present invention; Figure 5 This is a schematic diagram of the cam and the moving rod of the present invention; Figure 6 This is a schematic diagram of the limiting mechanism of the present invention; Figure 7 This is an exploded view of the limiting mechanism of the present invention; Figure 8 This is a side view schematic diagram of the overall limiting mechanism and stacking mechanism of the present invention; Figure 9 This is a motion diagram of the drawer and support plate of the present invention about to detach from the carton; Figure 10 This is a motion diagram showing the state of the drawer and support plate of the present invention after they have been detached from the carton.

[0017] The components include: 1. Outer shell; 2. Moving conveyor belt; 3. Fixed conveyor belt; 4. Pull-out controller; 5. Limiting mechanism; 501. Upper pressure rod; 502. Push rod; 503. Limiting plate; 504. Inclined rod; 505. Wedge block; 506. Sliding column; 6. Stacking mechanism; 601. Pull-out plate; 602. Rotating roller; 603. Support plate; 604. Rack; 605. Gear; 606. Cam; 607. Moving rod; 608. Return spring; 7. Lifting platform; 8. Feed inlet. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1 to 5 As shown, the present invention provides an integrated conveying and stacking device for packaging cartons, including a housing 1. The housing 1 is provided with a stacking mechanism 6 for stacking cartons. The housing 1 is also provided with a fixed conveyor belt 3 for assisting the stacking mechanism 6 in stacking and conveying bundles of cartons. A movable conveyor belt 2 is provided on one side of the fixed conveyor belt 3 for conveying the cartons after stacking. The stacking mechanism 6 includes a drawer plate 601 and a support plate 603 that are slidably connected to the outer casing 1. A rack 604 is fixedly connected to both sides of the drawer plate 601. A gear 605 is meshed with the rack 604 on the side of the drawer plate 601 away from the support plate 603. A cam 606 is splinedly connected to one side of the gear 605. A moving rod 607 is slidably contacted on one side of the cam 606. The rotation of the gear 605 drives the moving rod 607, which is slidably contacted on one side of the cam 606, to disengage the support plate 603 from the carton. The support plate 603 and the moving rod 607 are movably connected.

[0020] Please see Figures 1 to 5As shown, to address the problems mentioned in the background art, improve the accuracy of stacking bundled cartons, thereby enhancing the stability of subsequent conveying and preventing the formation of skewed, high-center-of-gravity pillars after stacking, which could collapse during conveying, the following mechanism is employed: When a carton is placed above the drawer plate 601, the drawer plate 601 is driven to move outward from the inside of the outer casing 1. This movement of the drawer plate 601 causes the racks 604 to move synchronously. Just as the drawer plate 601 is about to disengage from the bottom of the carton, the racks 604 on both sides of the drawer plate 601 engage with the gears 605. This drives the gear 605 and the cam 606 on one side to rotate synchronously. At this time, the rotation of the cam 606 will drive the moving rod 607 and the support plate 603 movably connected to one end to move under the carton through its outer surface. When the drawer 601 is separated from the carton, the support plate 603 will also be separated from the carton, so that the carton is no longer supported and falls onto the surface of the fixed conveyor belt 3. At this time, the fixed conveyor belt 3 will move in coordination with the falling carton, so that the topmost carton stacked together is always directly below the drawer 601. Please see Figures 3 to 5 It should be explained that when the cam 606 pushes the support plate 603 at one end of the moving rod 607 out from under the carton through its outer arc surface, the support plate 603 will always be in a state of slow movement under the carton before the racks 604 on both sides of the drawer 601 are fully engaged with the gears 605. Therefore, it will not separate from the carton prematurely. Only when the drawer 601 is no longer in contact with the carton will the support plate 603 also separate from the carton. This ensures that as the drawer 601 continuously reduces its contact area with the carton, the carton can still be in a horizontal state before falling above the fixed conveyor belt 3. This prevents the carton from deviating during stacking due to its tilted state, thus ensuring the stability of the subsequent transport of stacked cartons. It can stably transport and convey cartons, making it easy to stack bundled cartons into a stack.

[0021] Please continue reading. Figures 3 to 5 As shown, the drawer plate 601 has a groove inside, and multiple rotating rollers 602 that are in rolling contact with the carton are rotatably connected inside the groove.

[0022] Please continue reading. Figures 3 to 5As shown, when the drawer plate 601 is pulled out from inside the outer casing 1, multiple rotating rollers 602 rotatably connected to the internal groove of the drawer plate 601 roll on the lower surface of the carton. This prevents the drawer plate 601 from displacing the carton during the extraction process, thus avoiding any impact on the accuracy of the carton's falling position. Furthermore, since the two adjacent sides of the carton near the inside of the outer casing 1 are tightly fitted to the inner surface of the outer casing 1, the contact point between the inner surface of the outer casing 1 and the carton during the extraction of the drawer plate 601 effectively limits the carton's movement, thereby preventing the rotating rollers from rolling and contacting the lower surface of the carton. Roller 602 can be rotated and pulled out from the bottom of the carton. During the extraction of the drawer plate 601, the adjacent sides of the carton will always be in contact with the L-shaped corner formed inside the outer shell 1 to ensure the overall stability of the carton. In addition, by opening a groove inside the fixed conveyor belt 3 and setting a rotating roller 602 that is in close contact with the bottom of the carton inside the groove, the carton can be stably separated from the support plate 603 when it is separated from the support plate 603, avoiding jamming. This would prevent a time deviation between the drawer plate 601 and the support plate 603, which could cause the center of gravity to become unbalanced during the carton's fall.

[0023] Please see Figures 1 to 5 As further shown, a reset spring 608 is provided below the moving rod 607 to assist it in resetting. The support plate 603 and the rack 604 are slidably connected to the outer casing 1. A feed port 8 is provided on one side of the outer casing 1 to feed the carton to the top of the drawer plate 601.

[0024] Please see Figures 1 to 5 As further shown, in order for the drawer plate 601 and the support plate 603 to continuously stack bundled cartons together, when the drawer plate 601 moves from the outside to the inside and resets inside the outer casing 1, the racks 604 on both sides of the drawer plate 601 will first mesh with the gears 605, thereby driving the gears 605 and cams 606 to reverse. After the gears 605 reverse, the moving rod 607 that slides in contact with its outer surface will be pulled by the return spring 608 to drive the support plate 603 to slide and reset inside the outer casing 1, thus keeping the drawer plate 601 and the support plate 603 on the same horizontal line. When subsequent bundles of cartons are fed to the surface of the drawer plate 601 through the feed port 8... Afterwards, the drawer plate 601 and support plate 603 repeat the above steps to stack the bundled cartons together. During the reset process, at the moment when the rack 604 no longer meshes with the gear 605, the moving rod 607 on one side of the support plate 603 is still in contact with the outside of the cam 606 under the tension of the reset spring 608. The rotation of the cam 606 is also limited to a certain extent by the moving rod 607, so that the cam 606 can be reset stably, avoiding its rapid reset, which would cause a deviation in the reference between the support plate 603 and the drawer plate 601, and thus cause a deviation in the time when the drawer plate 601 separates from the support plate 603 and the cartons.

[0025] Please see Figures 5 to 10 As shown, the interior of the outer casing 1 is also provided with a limiting mechanism 5 for assisting the stacking mechanism 6 in stacking cartons. The limiting mechanism 5 includes a limiting plate 503 located above the cartons and directly attached to their upper surface. An externally driven upper pressure rod 501 is provided above the limiting plate 503. Wedges 505 are provided on both sides of the upper pressure rod 501. The wedges 505 can drive the cam 606 to slightly displace on one side of the gear 605.

[0026] Please see Figures 5 to 10 As shown, because the movement and separation of the drawer plate 601 and the support plate 603 under the carton is an instantaneous action, the carton is very likely to tilt during the descent due to the loss of balance after losing support. If the carton falls on the fixed conveyor belt 3 in a tilted state, it will cause the carton to be stacked in a deviated manner, and eventually form a tilted high center of gravity column, which may lead to collapse during the conveying process. Therefore, to avoid the above situation, a limiting plate 503 is installed above the cartons to be stacked, which fits tightly against them for positioning. When the cartons are placed into the interior of the outer casing 1 through the feed port 8, the limiting plate 503 is moved to the top of the cartons by external hydraulic or pneumatic pressure driven by the upper pressure rod 501. As the pull plate 601 slides out from under the cartons, the limiting plate 503 also moves downward continuously, always fitting tightly against the ground surface of the cartons. When the limiting plate 503 moves slightly downward, it will be controlled by the upper pressure rod 501 on both sides. The wedge block 505 drives the cam 606 to slide on the splined pin of the gear 605, so that the rotation of the gear 605 can drive the cam 606 to rotate. Before the cam 606 is driven by the wedge block 505, the cam 606 will not be driven by the rotation of the gear 605. This can avoid the situation where the gear 605 rotates in advance and drives the cam 606 to rotate, causing the support plate 603 to disengage from under the carton, resulting in a time deviation and a reduction in the stacking quality of the carton. This ensures that the carton falls horizontally onto the surface of the fixed conveyor belt 3 for stacking.

[0027] Please see Figure 6 and Figure 7 As shown, a push rod 502 is fixedly connected between the limiting plate 503 and the upper pressure rod 501. The two ends of the upper pressure rod 501 are rotatably connected to the inclined rod 504, and the inclined rod 504 is rotatably connected to the wedge block 505.

[0028] Please see Figure 6 and Figure 7As shown, when the external hydraulic or pneumatic pressure drives the upper pressure rod 501 to move downward, in order to avoid interference between the upper pressure rod 501 and the limiting plate 503, the movement of the upper pressure rod 501 can drive the push rod 502, which in turn drives the limiting plate 503 to move downward and fit against the carton. When the upper pressure rod 501 moves downward, it will also drive the inclined rods 504 connected to both sides to move synchronously. The movement of the inclined rods 504 will drive the wedge block 505, which will apply a squeezing force to the cam 606 through the wedge block 505, causing the cam 606 to move slightly on the spline pin of the gear 605. This can control the rotation timing of the cam 606. When the cam 606 can rotate, it can drive the support plate 603 to cooperate with the drawer plate 601 to drop the carton in a horizontal state, which can greatly improve the accuracy of carton stacking.

[0029] Please continue reading. Figure 6 and Figure 7 As shown, the inclined surface of the wedge block 505 is slidably engaged with the slide column 506, one end of the slide column 506 is movably connected to the cam 606, and a buffer spring is provided at the sliding position of the wedge block 505 and the slide column 506.

[0030] Please continue reading. Figure 6 and Figure 7 As shown, when the inclined rod 504 drives the wedge block 505 to move vertically downward, the wedge block 505 will apply a squeezing force to the sliding column 506 that is engaged on one side. This causes the cam 606 at one end of the sliding column 506 to slide on the splined pin surface of the gear 605, which can control the rotation timing of the cam 606 and thus limit the horizontal movement of the carton. This ensures that the carton remains stable during its descent. Furthermore, by setting a buffer spring at the sliding position of the wedge block 505 and the sliding column 506, the sliding column 506 can slide stably inside the wedge block 505, thereby driving the cam 606 to move flexibly on the surface of the splined pin of the gear 605, ensuring precise and stable engagement. On the other hand, when the wedge block 505 is reset, while it is being limited by the inclined surface, the buffer spring can move in conjunction with the sliding column 506, ensuring that the sliding column 506 is always in contact with the inclined surface of the wedge block 505, facilitating the push and reset of the cam 606.

[0031] Please continue reading. Figures 6 to 10 It should be explained that the downward stroke distance of the limit plate 503 is less than the outward stroke distance of the pull plate 601, and the inclined rod 504 can rotate around the center point of the wedge block 505 by a certain angle.

[0032] Please continue reading. Figures 6 to 10It should be explained that before the carton is fed from the feed inlet 8 into the upper part of the drawer plate 601 and support plate 603 and tightly fitted against the inner corner of the outer shell 1, the diagonal bar 504 will rotate a certain angle around the center line of the wedge block 505, so that the limiting plate 503 is in a position away from the top of the carton. After the carton is placed, it is rotated back to its original position so that the limiting plate 503 is directly above the carton and its lower surface is tightly fitted against the upper surface of the carton. When the drawer plate 601 is pulled out from under the carton, the downward stroke distance of the limiting plate 503 is less than that of the drawer plate 601. As the travel distance is extended, the limiting plate 503 also moves slightly downwards, applying downward pressure to the center of the bundled cartons. This causes a slight bend in the lower surface of the cartons. When the subsequent pull plate 601 disengages from the support plate 603, the slight bend in the center is released instantly, allowing the cartons to fall more quickly and stably onto the fixed conveyor belt 3. This keeps the center of gravity of the cartons in the center, ensuring they fall horizontally onto the surface of the fixed conveyor belt 3 and are precisely aligned with the cartons below. Figures 9 to 10 As shown; Furthermore, when the wedge block 505 moves vertically downwards driven by the inclined rod 504, and the sliding column 506 slides and engages with the inclined surface of the wedge block 505 to its limit position, the wedge block 505 will drive the cam 606 on one side of the sliding column 506 to slide on the splined pin surface of the gear 605. This ensures that the timing of the separation between the drawer plate 601 and the support plate 603 is just right, allowing the drawer plate 601 and the support plate 603 to separate stably from the carton while avoiding tilting during the fall due to the imbalance of the center of gravity. This effectively improves the stability of the carton during its fall.

[0033] Please see Figure 1 and Figure 2 As shown, a pull controller 4 for driving the pull plate 601 to be pulled out inside the housing 1 is provided on one side, and a lifting platform 7 for controlling the lifting and lowering of the fixed conveyor belt 3 is provided below it.

[0034] Please see Figure 1 and Figure 2 As shown, when a bundle of cartons falls from the surface of the drawer plate 601 above the fixed conveyor belt 3, the lifting platform 7 will control the fixed conveyor belt 3 to move downward a certain distance, so that the top bundle of cartons falling on the fixed conveyor belt 3 is always below the drawer plate 601. When another bundle of cartons falls horizontally and vertically from above the drawer plate 601, it can accurately match the top bundle of cartons on the fixed conveyor belt 3 below, so that multiple bundles of cartons can be accurately and stably stacked together, ensuring the accuracy and stability of the stacking, which is convenient for subsequent conveying of stacked cartons.

[0035] Please see Figures 8 to 9As shown, gear 605 is located on one side of feed inlet 8 and there is a distance between it and the inner side of fixed conveyor belt 3. Gear 605 is rotatably connected to housing 1. The horizontal line of the teeth below rack 604 intersects horizontally with the arc line of the outer ring teeth of gear.

[0036] Please see Figures 8 to 9 As shown, to avoid motion interference between the fixed conveyor belt 3 and gears 605 when rotating and conveying a stack of cartons, gears 605 are positioned on one side of the feed inlet 8, i.e., on one side of the cartons. One end of the fixed conveyor belt 3 only covers the area of ​​the cartons. Therefore, there is a certain distance between gears 605 and the fixed conveyor belt 3. The placement of gears 605 away from the fixed conveyor belt 3 ensures stable meshing between the rack 604 driven by the pull plate 601 and gears 605. Furthermore, the horizontal line of the lower teeth of the rack 604 overlaps horizontally with the arc line of the outer teeth of the gear. When the rack 604 moves to the position of gear 605, it can stably mesh with gear 605, thereby driving it to rotate. When the subsequent cam 606 is pushed by the slide column 506, it can stably drive the support plate 603 to cooperate with the pull plate 601 to pull out from under the cartons, allowing the cartons to fall horizontally and ensuring the stacking effect.

[0037] Please see Figures 5 to 7 As shown, the limiting plate 503 is made of a highly resilient material, the wedge block 505 is slidably engaged with the outer shell 1, and a pair of diagonal bars 504 are located on the outside of the carton.

[0038] Please see Figures 5 to 7 As shown, the limiting plate 503 is made of a highly resilient material, which can prevent damage to the cardboard boxes when the limiting plate 503 applies slight pressure to the bundled cardboard boxes. When the inclined rod 504 swings around the center line of the wedge block 505 at a certain angle, the wedge block 505 is in a fixed state. Only when the limiting plate 503 swings to the designated position will the inclined rod 504 move downward and drive the wedge block 505 to move downward inside the outer shell 1. This can effectively improve the smoothness of the slight movement of the cam 606 on one side of the sliding column 506 by the wedge block 505 through the inclined surface.

[0039] 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 integrated conveying and stacking device for packaging cartons, comprising a housing (1), characterized in that, The shell (1) is provided with a stacking mechanism (6) for stacking cartons. The shell (1) is also provided with a fixed conveyor belt (3) for assisting the stacking mechanism (6) in stacking and conveying bundles of cartons. A movable conveyor belt (2) is provided on one side of the fixed conveyor belt (3) for conveying the cartons after stacking. The stacking mechanism (6) includes a drawer plate (601) and a support plate (603) slidably connected to the outer shell (1). A rack (604) is fixedly connected to both sides of the drawer plate (601). A gear (605) is meshed with the rack (604) on the side of the drawer plate (601) away from the support plate (603). A cam (606) is splinedly connected to one side of the gear (605). A moving rod (607) is slidably contacted on one side of the cam (606). The rotation of the gear (605) drives the moving rod (607) slidably contacted on one side of the cam (606) to drive the support plate (603) to disengage from the carton. The support plate (603) and the moving rod (607) are movably connected.

2. The integrated conveying and stacking device for packaging cartons according to claim 1, characterized in that, The drawer (601) has a groove inside, and multiple rotating rollers (602) that are in rolling contact with the carton are rotatably connected inside the groove.

3. The integrated conveying and stacking device for packaging cartons according to claim 2, characterized in that, A reset spring (608) is provided below the moving rod (607) to assist it in resetting. The support plate (603) and rack (604) are slidably connected to the outer shell (1). A feed port (8) for feeding the carton to the top of the drawer (601) is provided on one side of the outer shell (1).

4. The integrated conveying and stacking device for packaging cartons according to claim 1, characterized in that, The interior of the outer shell (1) is also provided with a limiting mechanism (5) for assisting the stacking mechanism (6) in stacking cartons. The limiting mechanism (5) includes a limiting plate (503) located above the cartons and directly attached to their upper surface. An externally driven upper pressure rod (501) is provided above the limiting plate (503). Wedges (505) are provided on both sides of the upper pressure rod (501). The wedges (505) can drive the cam (606) to slightly displace on one side of the gear (605).

5. The integrated conveying and stacking device for packaging cartons according to claim 4, characterized in that, A push rod (502) is fixedly connected between the limiting plate (503) and the upper pressure rod (501). The two ends of the upper pressure rod (501) are rotatably connected to the inclined rod (504), and the inclined rod (504) is rotatably connected to the wedge block (505).

6. The integrated conveying and stacking device for packaging cartons according to claim 5, characterized in that, The inclined surface of the wedge (505) is slidably engaged with a slide column (506), one end of the slide column (506) is movably connected to the cam (606), and a buffer spring is provided at the sliding position of the wedge (505) and the slide column (506).

7. The integrated conveying and stacking device for packaging cartons according to claim 6, characterized in that, The downward stroke distance of the limiting plate (503) is less than the outward stroke distance of the pull plate (601), and the inclined rod (504) can rotate around the center point of the wedge block (505) by a certain angle.

8. The integrated conveying and stacking device for packaging cartons according to claim 1, characterized in that, A pull controller (4) for driving the pull plate (601) to pull inside the housing (1) is provided on one side of the housing (1), and a lifting platform (7) for controlling the lifting of the fixed conveyor belt (3) is provided below the fixed conveyor belt (3).

9. The integrated conveying and stacking device for packaging cartons according to claim 1, characterized in that, The gear (605) is located on one side of the feed inlet (8) and there is a distance between it and the inner side of the fixed conveyor belt (3). The gear (605) is rotatably connected to the outer shell (1). The horizontal line of the teeth below the rack (604) overlaps horizontally with the arc line of the outer ring teeth of the gear.

10. The integrated conveying and stacking device for packaging cartons according to claim 7, characterized in that, The limiting plate (503) is made of a high-toughness material, the wedge (505) is slidably engaged with the outer shell (1), and a pair of the inclined rods (504) are located on the outside of the carton.

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