Carton stacking mechanism

Abstract

The utility model discloses a kind of carton stacking mechanisms, belong to carton production field.It include stacking assembly, stacking assembly includes support seat, two groups of oppositely arranged lifting frame are provided on support seat, left lifting frame one, right lifting frame two, lifting frame one and lifting frame two are all provided with at least one group of support part for supporting carton, support seat is installed with the driving part with the driving carton moves;Adjusting assembly, adjusting assembly includes two groups of displacement part for adjusting the distance between lifting frame one and lifting frame two, which are arranged on support seat, driving part is connected between two groups of displacement part, which drives lifting frame one and lifting frame two to move synchronously close or away from each other.The carton stacking mechanism of the application forms a guide structure through the T-shaped seat sliding rail and the movable seat sliding groove of adjusting assembly, the movable seat is stably moved by the driving part driving the bidirectional screw rod, and the symmetry of the lifting frame is guaranteed;Four-point connection cooperates with scale, and the interval is prevented from being stuck.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box production technology, and in particular to a cardboard box stacking mechanism. Background Technology

[0002] In logistics, warehousing management, and commodity production, cardboard boxes are commonly used packaging containers, and their stacking is a key aspect of improving space utilization and facilitating handling and management. Currently, cardboard box stacking is mainly divided into two methods: manual stacking and mechanical stacking.

[0003] For example, a finished carton stacking mechanism with publication number CN221458857U includes an adjustable base, a first lifting frame, a second lifting frame, and an electric conveyor belt. This mechanism can compress the cartons while stacking them, preventing them from puffing up and taking up unnecessary space, thus saving space and facilitating the stacking of more cartons in the future.

[0004] However, the above solution only mentions the compatibility between the movable base and the fixed base, but does not specify the guiding structure between them, such as the cooperation of slide rails and sliders. In actual operation, if the electric push rod drives the movable base to move without reliable guidance, the second lifting frame is very likely to deviate and tilt during the movement. This will not only disrupt its symmetry with the first lifting frame, but will also cause uneven force on both sides of the carton during the conveying and lifting stages, and in severe cases, even cause jamming. Therefore, a carton stacking mechanism needs to be designed.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] The present invention adopts the following technical solution: a carton stacking mechanism. It mainly includes a roller conveyor; a stacking assembly disposed on one side of the roller conveyor, the stacking assembly including a support base disposed on one side of the roller conveyor, the support base having two sets of opposing lifting frames, the left lifting frame being lifting frame one and the right lifting frame being lifting frame two, both lifting frame one and lifting frame two having at least one set of support parts for supporting the carton, and a drive part for pushing the carton to move installed on the support base; an adjustment assembly disposed on the support base, the adjustment assembly including two sets of displacement parts disposed on the support base for adjusting the distance between lifting frame one and lifting frame two, the two sets of displacement parts being parallel to each other, and a drive part connecting the two sets of displacement parts to drive lifting frame one and lifting frame two to move closer or further apart synchronously.

[0007] Furthermore, the displacement section includes a T-shaped seat mounted on the support base. Fixed seats are installed at both ends of the T-shaped seat. A two-way lead screw is connected between the two sets of fixed seats through a bearing. Two sets of movable seats are threaded onto the two-way lead screw. The bottom of the movable seats is machined with a groove that matches the top slide rail of the T-shaped seat. The two sets of symmetrical movable seats on the left side of the two displacement sections are connected to the inner wall of the first lifting frame, and the two sets of symmetrical movable seats on the right side of the two displacement sections are connected to the inner wall of the second lifting frame.

[0008] Furthermore, the bottom edges of the lifting frame one and the lifting frame two are provided with notches and grooves that match the contours of the movable seat and the T-shaped seat, and the depth of the notches and grooves is greater than the height of the T-shaped seat.

[0009] Furthermore, a protective cover is bolted to the support base. The protective cover is made of steel plate and is formed inside the protective cover to accommodate a cavity.

[0010] Furthermore, the drive unit includes a worm gear mounted on one end of the bidirectional lead screw, and a rotating shaft is mounted on the two end side plates of the protective cover through bearings. Two sets of worms are integrally formed on the rotating shaft, and the two sets of worms are spaced apart along the axial direction of the rotating shaft and respectively mesh with the worm gears at one end of the two sets of bidirectional lead screws. A drive motor is mounted on the outside of the protective cover through a motor mount, and the output shaft of the drive motor is connected to one end of the rotating shaft through a coupling.

[0011] Furthermore, the support is detachably mounted on the lifting frame by bolts.

[0012] Furthermore, two sets of scales are embedded on the upper surface of the support base along the moving direction of lifting frame one and lifting frame two, and the surface of the scales is covered with a wear-resistant transparent acrylic plate.

[0013] Furthermore, two sets of baffles are installed on the inner wall of the lifting frame one, and two sets of baffles are also installed on the inner wall of the lifting frame two. Both baffles one and baffles two are arc-shaped or rectangular cover structures. Baffles two and baffles one respectively cover different sections of the bidirectional lead screw, and their coverage areas are connected to each other.

[0014] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0015] A carton stacking mechanism features a slide rail on a T-shaped base of an adjusting component, with a corresponding groove at the bottom of the movable base, forming a precise slide rail slider guiding structure. When the drive unit rotates the bidirectional lead screw, the movable base moves stably along the slide rail, ensuring that lifting frame one and lifting frame two move closer or further apart synchronously, avoiding deviation and tilting, and ensuring their symmetry. The four-point connection of the two sets of displacement units ensures uniform force on the lifting frame. Combined with the scale on the support base and the closed-loop control of the controller, the spacing can be adjusted to ensure balanced force on both sides during carton conveying and lifting, eliminating jamming. At the same time, the sliding sleeve protection structure of baffle one and baffle two reduces the impact of dust and debris on the bidirectional lead screw. The detachable design of the support unit and the smooth drive of the cylinder push plate further improve the adaptability and operational stability of the mechanism for different carton sizes, significantly improving stacking efficiency and reliability. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 This is an overall schematic diagram of a cardboard box stacking mechanism according to this application;

[0019] Figure 2 for Figure 1 Exploded view;

[0020] Figure 3 for Figure 2 Enlarged view of point A;

[0021] Figure 4 for Figure 2 Enlarged view of point B;

[0022] Figure label:

[0023] 1. Roller conveyor; 2. Stacking assembly; 21. Support seat; 22. Lifting frame; 23. Support part; 231. Fixed block; 232. Fixed rod; 233. Movable rod; 234. Support pad; 235. Notch one; 236. Bushing; 24. Cylinder; 241. Push plate; 3. Adjustment assembly; 31. T-shaped seat; 32. Fixed seat; 33. Bidirectional lead screw; 34. Movable seat; 35. Worm gear; 36. Rotating shaft; 37. Worm; 38. Protective cover; 39. Drive motor; 310. Baffle one; 311. Baffle two; 312. Scale. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1-4 As shown, this embodiment of the utility model provides a carton stacking mechanism, including a roller conveyor 1 for conveying cartons. A stacking assembly 2 is provided on one side of the roller conveyor 1. The stacking assembly 2 includes a support base 21 on one side of the roller conveyor 1, and two sets of opposing lifting frames 22 are provided on the support base 21. The lifting frames 22 have a concave structure. Figure 2 For example, the lifting frame 22 on the left is defined as lifting frame one, and the lifting frame 22 on the right is defined as lifting frame two;

[0027] At least one set of support parts 23 is provided on both lifting frame one and lifting frame two, and the support parts 23 located on lifting frame one and lifting frame two are arranged opposite to each other. The support part 23 includes fixing blocks 231 installed on both sides of the inner wall of lifting frame 22 by fasteners and arranged opposite to each other. The fixing blocks 231 are in an inclined state, and their high end and low end form a clear height difference. A fixing rod 232 is fixedly connected between the inclined high ends of the two sets of fixing blocks 231. The fixing rod 232 is connected to the fixing blocks 231 by bolt fastening to form a stable upper support structure. At the same time, a movable rod 233 is installed between the inclined low ends of the two sets of fixing blocks 231 through a bearing. The movable rod 233 can rotate freely around the center of the bearing.

[0028] Two sets of support pads 234 with a certain distance are fixedly sleeved on the movable rod 233. The support pads 234 have bushings 236, which are fixedly connected to the movable rod 233 by fasteners to ensure that the support pads 234 and the movable rod 233 rotate synchronously. The two sets of support pads 234 have a notch 235 at the end that is close to each other. The shape of the notch 235 is adapted to the bottom edge of the carton and can stably support the carton. The two sets of support pads 234 have a notch 2 (not shown in the figure) at the end that is far from each other. In the initial state, the notch 2 is in close contact with the bottom surface of the fixed rod 232. At this time, the support pads 234 are kept horizontal under the limiting action of the fixed rod 232.

[0029] A drive unit is installed on the support base 21. This drive unit includes a cylinder 24 fixedly mounted on the support base 21. The telescopic end of the cylinder 24 is fixedly connected to the push plate 241 by bolts. In the initial state, the upper surface of the push plate 241 is flush with the conveying surface of the roller conveyor 1, ensuring that the carton can smoothly transition from the roller conveyor 1 to the push plate 241. After the carton is conveyed to the push plate 241, the cylinder 24 extends and pushes the push plate 241 and the carton toward the support part 23. The bottom of the carton gradually contacts the bottom surface of the support pad 234 and applies pressure. At this time, under the action of the carton's gravity and thrust, the support pad 234 drives the movable rod 233 to rotate around the bearing, presenting an upward opening state, and the notch 2 disengages from the fixed rod 232. Once the carton has completely passed the support pad 234, the cylinder 24 retracts, causing the push plate 241 to reset. The carton falls under the influence of gravity and overlaps the support pad 234 at the notch 235 on the two sets of movable rods 233, completing a single stacking action.

[0030] Furthermore, an adjustment component 3 is installed on the support base 21. The adjustment component 3 is used to flexibly adjust the distance between the lifting frame one and the lifting frame two according to the size of the carton, so as to adapt to the stacking requirements of cartons of different specifications. The adjustment component 3 includes two sets of displacement parts set on the support base 21. The two sets of displacement parts are distributed in parallel and together form a stable adjustment structure. The distance between the lifting frame one and the lifting frame two is adjusted through synchronous action.

[0031] The displacement section includes a T-shaped seat 31 fixedly mounted on a support base 21. Fixed seats 32 are fixedly mounted at both ends of the T-shaped seat 31, and a bidirectional lead screw 33 is connected between the two sets of fixed seats 32 via a through bearing. A separator ring is provided in the middle of the bidirectional lead screw 33, dividing the lead screw into a left-hand thread section and a right-hand thread section. The pitch and tooth profile of the two thread sections are completely identical, only their directions of rotation are opposite. Simultaneously, two sets of movable seats 34 are threadedly connected to the bidirectional lead screw 33. These movable seats 34 simultaneously connect to the T-shaped seat 21. The seat 31 is slidably connected, and two sets of movable seats 34 are threadedly connected to the bidirectional lead screw 33. The two sets of movable seats 34 are respectively screwed onto the left-hand thread section and the right-hand thread section of the bidirectional lead screw 33. The bottom of the movable seat 34 is machined with a sliding groove that matches the top slide rail of the T-shaped seat 31. When the bidirectional lead screw 33 rotates, the two sets of movable seats 34 move synchronously in opposite directions along the T-shaped seat 31 under the combined action of the thread driving force and the slide rail guiding force, that is, they move towards each other or away from each other at the same time.

[0032] The two sets of symmetrical movable seats 34 on the left side of the two sets of displacement parts are bolted to the inner wall of the lifting frame one, and the two sets of symmetrical movable seats 34 on the right side of the two sets of displacement parts are bolted to the inner wall of the lifting frame two. This connection structure makes the lifting frame evenly stressed and prevents swaying during movement. At the same time, notches and grooves (not shown in the figure) that match the contours of the movable seats 34 and T-shaped seats 31 are provided at the bottom edges of the lifting frame one and the lifting frame two. The depth of the notches and grooves is greater than the height of the T-shaped seats 31, and the width is slightly greater than the maximum lateral dimension of the movable seats 34. The edges of the grooves are rounded to prevent scratching when the lifting frame moves.

[0033] When lifting frame one or lifting frame two moves laterally under the drive of movable seat 34, the top of T-shaped seat 31 and the upper part of movable seat 34 are always in the notch groove, ensuring that there is no mechanical interference between the two within the adjustment range.

[0034] When the spacing needs to be adjusted, the bidirectional lead screw 33 is rotated by a servo motor or handwheel. The two sets of movable seats 34 drive the lifting frame one and the lifting frame two to make symmetrical movements. The displacement is controlled by the pitch and rotation angle of the bidirectional lead screw 33, which can meet the stacking and positioning requirements of cartons of different sizes.

[0035] To achieve synchronous driving of the two sets of displacement parts, such as Figure 2 and Figure 4 As shown, a drive unit is connected to one end of the bidirectional lead screw 33 with two sets of displacement sections. The drive unit includes a worm gear 35 fixedly installed at one end of the bidirectional lead screw 33. The worm gear 35 and the bidirectional lead screw 33 are connected by a key. That is, keyways are opened in both the inner hole of the worm gear 35 and the shaft end of the bidirectional lead screw 33. The circumferential fixation is achieved by a flat key. A shoulder and nut are provided at the shaft end of the bidirectional lead screw 33 to axially position the worm gear 35 and prevent it from axially moving during the rotation of the bidirectional lead screw 33.

[0036] Meanwhile, a protective cover 38 is bolted to the support base 21. The protective cover 38 is made of bent steel plate, and its interior forms a receiving cavity that covers the two sets of worm gears 35. This effectively prevents external dust and debris from entering the meshing area between the worm gears 35 and subsequent components, ensuring the stability of the transmission. Furthermore, a rotating shaft 36 is mounted on the side plates at both ends of the protective cover 38 through bearings. The outer ring of the bearing is interference-fitted with the mounting hole on the side plate of the protective cover 38, while the inner ring is transition-fitted with the rotating shaft 36, allowing the rotating shaft 36 to rotate flexibly on the protective cover 38 with minimal radial runout during rotation.

[0037] Two sets of worm gears 37 are integrally formed on the rotating shaft 36. The two sets of worm gears 37 are spaced apart along the axial direction of the rotating shaft 36 and mesh with the worm wheels 35 at one end of the two sets of bidirectional lead screws 33, respectively. At the same time, a drive motor 39 is fixedly installed on the outside of the protective cover 38 through a motor base. The output shaft of the drive motor 39 is connected to one end of the rotating shaft 36 through a coupling. When the drive motor 39 starts, its output shaft drives the rotating shaft 36 to rotate through the coupling. The two sets of worm gears 37 on the rotating shaft 36 rotate synchronously, which in turn drives the two sets of worm wheels 35 meshing with them to rotate synchronously. The worm wheels 35 drive the two sets of bidirectional lead screws 33 to rotate simultaneously, realizing the synchronous drive of the two sets of displacement parts. This ensures that the lifting frame one and the lifting frame two always maintain symmetrical movement during the adjustment process, further improving the accuracy and stability of the spacing adjustment.

[0038] It should be noted that the support 23 is detachably mounted on the lifting frame 22 by bolts, so as to be suitable for adjusting the spacing between multiple sets of support 23 according to the height of the carton;

[0039] Meanwhile, two sets of scales 312 are embedded on the upper surface of the support base 21 along the moving direction of lifting frame one and lifting frame two. The zero mark of the scale 312 is located at the center of the support base 21, and the scale value increases evenly to both sides. Its surface is covered with a wear-resistant transparent acrylic plate (not shown in the figure), which facilitates reading and prevents scale wear. One set of scales 312 corresponds to the moving trajectory of lifting frame one, and the other set corresponds to the moving trajectory of lifting frame two. At the bottom of the outer side wall of lifting frame one and lifting frame two, pointers pointing to scales 312 are fixed respectively (not shown in the figure). The pointer tip maintains a small gap with the scale surface of scale 312, which can accurately indicate the real-time position of the lifting frame. Thus, by the scale difference between the two sets of pointers, the displacement of lifting frame one and lifting frame two and the actual distance between them can be accurately determined.

[0040] Meanwhile, a controller is fixedly installed on one side of the support base 21 by bolts. The controller adopts a PLC control system. Its input end is electrically connected to the sensor of the roller conveyor 1, the limit switch of the cylinder 24, the encoder of the drive motor 39, and the reading module of the scale 312 through wires. It can collect signals such as the carton conveying status and the operating position of the equipment in real time. Its output end is electrically connected to the drive motor 39 of the roller conveyor 1, the solenoid valve of the cylinder 24, and the driver of the drive motor 39 through relays. It can control the start, stop, running speed and movement range of the above equipment according to the preset program and real-time signals.

[0041] To provide more comprehensive protection for the bidirectional lead screw 33, two sets of second-stage covers 311 are installed on the inner wall of the lifting frame one. These second-stage covers 311 are fixed to the inner wall of the lifting frame one with bolts. They have an arc-shaped or rectangular cover structure that fits precisely over the corresponding sections of the bidirectional lead screw 33, effectively preventing debris and dust that may fall during carton stacking from adhering to the surface of the bidirectional lead screw 33. Simultaneously, two sets of first-stage covers 310 are also installed on the inner wall of the lifting frame two. These first-stage covers 310 also have a cover structure adapted to the bidirectional lead screw 33, and they, along with the second-stage covers 311, respectively cover different sections of the bidirectional lead screw 33. The coverage areas of both sets are interconnected, providing continuous protection for the bidirectional lead screw 33.

[0042] The second baffle 311 and the first baffle 310 adopt a sliding sleeve fit structure. The inner side of the end of the second baffle 311 is machined with a groove, and the outer side of the corresponding end of the first baffle 310 is provided with a protruding edge that matches the groove. The protruding edge is inserted into the groove to form a sliding fit. When the first lifting frame moves under the drive of the movable seat 34, the second baffle 311 moves synchronously with the first lifting frame and slides relative to the first baffle 310. It always maintains the closed state of the bidirectional lead screw 33, avoiding partial exposure of the bidirectional lead screw 33 due to the movement of the lifting frame, and ensuring that its transmission performance is not affected by external interference.

[0043] Working Principle: First, the roller conveyor 1 continuously transports the cartons to be stacked onto the push plate 241. Initially, the push plate 241 is flush with the conveyor surface to ensure a smooth transition of the cartons. Once the cartons are fully placed on the push plate 241, the cylinder 24 starts and extends, pushing the push plate 241 to move the cartons towards the support 23. During this process, the bottom of the cartons gradually contacts the bottom surface of the support pad 234. With the combined action of the pushing force and gravity, the support pad 234 rotates upward around the movable rod 233, and the notch 2 separates from the fixed rod 232, forming an upward-opening channel. Once the cartons have completely passed the support pad 234, the cylinder 24 retracts and resets, the push plate 241 retracts, and the cartons fall under gravity, their bottom edge fitting precisely into the notch 235 of the support pad 234, completing a single stacking action. Subsequent cartons will repeat this process, stacking layer by layer on top of the cartons below.

[0044] Secondly, when handling cartons of different sizes, the adjusting component 3 begins to function. After the drive motor 39 starts, it drives the rotating shaft 36 to rotate via the coupling. The two sets of worm gears 37 on the rotating shaft 36 synchronously drive the corresponding worm wheels 35 to rotate, thereby causing the two sets of bidirectional lead screws 33 to rotate simultaneously. Since the left-hand and right-hand threaded sections of the bidirectional lead screws 33 are respectively connected to the movable seats 34, and the movable seats 34 are guided by the slide rail of the T-shaped seat 31, the two sets of movable seats 34 move synchronously in opposite directions along the lead screw, causing the lifting frame one and the lifting frame two to move towards or away from each other. During the movement, the notch groove at the bottom of the lifting frame maintains a sliding fit with the T-shaped seat 31 and the movable seat 34. The first baffle 310 and the second baffle 311 continuously protect the bidirectional lead screws 33 through the sliding sleeve structure until the distance between the two lifting frames is adapted to the width of the carton, ensuring that the support part 23 provides symmetrical and stable support for the carton.

[0045] Finally, the detachable design of the support section 23 further enhances the adaptability of the mechanism. If the height of the carton changes, the installation position of the support section 23 on the lifting frame 22 can be adjusted by removing the bolts, thereby changing the vertical spacing between adjacent support sections 23. After the spacing of the support sections 23 is adjusted, the notch 235 of the support pad 234 can still accurately support cartons of different heights. Combined with the horizontal spacing adjustment achieved by the adjustment component 3, the entire mechanism can flexibly cope with the stacking requirements of various sizes of cartons, ensuring that the cartons remain horizontal during stacking, avoiding tilting or falling, and improving the versatility and operational stability of the equipment.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A cardboard box stacking mechanism, characterized in that: include Roller conveyor (1); A stacking assembly (2) is disposed on one side of the roller conveyor (1). The stacking assembly (2) includes a support base (21) disposed on one side of the roller conveyor (1). Two sets of lifting frames (22) are disposed on the support base (21). The left lifting frame (22) is the first lifting frame, and the right lifting frame (22) is the second lifting frame. Both the first lifting frame and the second lifting frame are provided with at least one set of support parts (23) for supporting the carton. A drive part for pushing the carton to move is installed on the support base (21). Adjustment component (3) is provided on the support base (21). The adjustment component (3) includes two sets of displacement parts provided on the support base (21) for adjusting the distance between lifting frame one and lifting frame two. The two sets of displacement parts are distributed in parallel. A drive part that drives lifting frame one and lifting frame two to move closer or further away synchronously is connected between the two sets of displacement parts.

2. The cardboard box stacking mechanism according to claim 1, characterized in that: The displacement section includes a T-shaped seat (31) mounted on the support base (21). Fixed seats (32) are installed at both ends of the T-shaped seat (31). A two-way screw (33) is connected between the two sets of fixed seats (32) through a bearing. Two sets of movable seats (34) are threaded onto the two-way screw (33). The bottom of the movable seat (34) is machined with a groove that matches the top slide rail of the T-shaped seat (31). The two sets of symmetrical movable seats (34) on the left side of the two displacement sections are connected to the inner wall of the first lifting frame. The two sets of symmetrical movable seats (34) on the right side of the two displacement sections are connected to the inner wall of the second lifting frame.

3. A cardboard box stacking mechanism according to claim 2, characterized in that: The bottom edges of the lifting frame one and the lifting frame two are provided with notches and grooves that match the contours of the movable seat (34) and the T-shaped seat (31), and the depth of the notches and grooves is greater than the height of the T-shaped seat (31).

4. A cardboard box stacking mechanism according to claim 2, characterized in that: A protective cover (38) is bolted onto the support base (21). The protective cover (38) is formed by bending steel plate, and a receiving cavity is formed inside the protective cover (38).

5. A cardboard box stacking mechanism according to claim 4, characterized in that: The drive unit includes a worm gear (35) installed at one end of the bidirectional lead screw (33). A rotating shaft (36) is installed on the two end side plates of the protective cover (38) through bearings. Two sets of worms (37) are integrally formed on the rotating shaft (36). The two sets of worms (37) are spaced apart along the axial direction of the rotating shaft (36) and respectively mesh with the worm gears (35) at one end of the two sets of bidirectional lead screws (33). A drive motor (39) is installed on the outside of the protective cover (38) through a motor mount. The output shaft of the drive motor (39) is connected to one end of the rotating shaft (36) through a coupling.

6. A cardboard box stacking mechanism according to claim 1, characterized in that: The support (23) is detachably mounted on the lifting frame (22) by bolts.

7. A cardboard box stacking mechanism according to claim 1, characterized in that: The upper surface of the support base (21) is embedded with two sets of scales (312) along the moving direction of the lifting frame one and the lifting frame two. The surface of the scales (312) is covered with a wear-resistant transparent acrylic plate.

8. A cardboard box stacking mechanism according to claim 3, characterized in that: The inner wall of the lifting frame is equipped with two sets of second baffles (311), and the inner wall of the lifting frame is also equipped with two sets of first baffles (310). Both the first baffle (310) and the second baffle (311) are arc-shaped or rectangular cover structures. The second baffle (311) and the first baffle (310) respectively cover different sections of the bidirectional lead screw (33), and their coverage areas are connected to each other.

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