Automatic regularizing and discharging mechanism of labeling machine

Abstract

The utility model discloses automatic regularizing unloading mechanism of labeling machine, including setting in the unloading mechanism body of labeling machine belt conveyer one side, the labeling machine belt conveyer includes conveyer belt, a plurality of baffle are fixedly connected with outside equal interval of conveyer belt, the unloading mechanism body includes: the base, and the bottom four corners rotation installation have the universal wheel of lock with the base. The utility model discloses through setting up a series of structures, can to a plurality of to be pasted label bottle column spare unloading and conveying one by one, be convenient for auxiliary personnel to the automatic accurate control distance horizontal displacement adjustment of stop limit lever, the accurate unloading work of different diameter to be pasted label bottle column spare is limited, avoid a plurality of to be pasted label bottle column spare unloading simultaneously and lead to messy and cause the phenomenon that follow-up is difficult to paste label, realize automatic regularizing unloading work, reduce manual unloading adjustment phenomenon and manpower cost, improve production efficiency, can according to the flexible lifting adjustment of guide material box of different labeling machine belt conveyer height and guide the discharge unloading height, improve applicability.

Description

Technical Field

[0001] This utility model relates to the field of labeling machine technology, specifically to an automatic straightening and feeding mechanism for labeling machines. Background Technology

[0002] Labeling machines are devices that affix rolls of self-adhesive labels (paper or metal foil) to products or prescribed packaging. Labeling machines are an indispensable part of modern packaging. At present, the types of labeling machines produced in my country are gradually increasing, and the technical level has also greatly improved. The situation has shifted from the backward situation of manual and semi-automatic labeling to the situation where automated high-speed labeling machines occupy a large market share.

[0003] In the labeling of tubes, bottles, and other cylindrical components, directly using the conveyor belt at the inlet of the labeling machine for labeling has the following drawbacks: it is difficult to neatly feed each item, and the products to be labeled are easily piled up haphazardly, making labeling difficult. This necessitates manual feeding and adjustment, which not only increases costs but also reduces production efficiency. In view of this, this application proposes an automatic feeding and straightening mechanism for the labeling machine to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide an automatic feeding mechanism for labeling machines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic straightening and unloading mechanism for a labeling machine, comprising an unloading mechanism body disposed on one side of the labeling machine's belt conveyor, wherein the labeling machine's belt conveyor includes a conveyor belt, and multiple partition plates are fixedly connected at equal intervals on the outer side of the conveyor belt; the unloading mechanism body comprises: The base has lockable casters mounted on all four corners of its bottom. The guide box has an inclined bottom inner wall and openings on its top and right sides. A storage box with openings on both the top and bottom is fixedly connected to the top left side of the guide box. An inclined guide plate is fixedly connected to the right inner wall of the storage box. Multiple bottle pillars to be labeled are movably contacted between the front and rear inner walls of the storage box and the guide box. The inclined guide plate is used to guide the bottle pillars to be labeled in the storage box to slide down into the guide box with the help of gravity. The guide box is used to automatically guide and convey the bottle pillars to be labeled to the right without power using the inclined bottom inner wall, so that the bottle pillars to be labeled fall onto the labeling machine's belt conveyor for conveying. Using multiple partition plates, when the conveyor belt of the labeling machine rotates, the bottle pillars to be labeled are conveyed one by one into the space between the corresponding two partition plates and are conveyed to the right to the external labeling machine for labeling. The vertical guide lifting drive assembly is installed between the bottom of the guide box and the top of the base. The vertical guide lifting drive assembly is used to drive the guide box to lift and lower according to the different heights of the labeling machine belt conveyor, so as to flexibly adjust the height to be suitable for guiding and feeding materials to the labeling machine belt conveyor of different heights. The distance control and horizontal adjustment component is fixedly connected to the right side of the storage box. Three limit rods, all located on the right side of the guide box, are fixedly connected to its bottom right side. The distance control and horizontal adjustment component is used to drive the limit rods to control the distance and adjust the horizontal movement, so as to accurately adjust the feeding distance according to the bottle column with different diameters to be labeled. This allows for the precise feeding of bottle column with different diameters to be labeled one by one, avoiding the mess caused by feeding multiple bottle column column at the same time, and realizing automatic and orderly feeding.

[0006] Preferably, the vertical guide lifting drive assembly includes four outer tubes, four inner rods, and an electric push rod. The electric push rod is fixedly installed on the top of the base, and the extended end of the electric push rod is fixedly connected to the bottom of the guide box. The four outer tubes are rectangularly fixedly connected to the top of the base, and the four inner rods are rectangularly fixedly connected to the bottom of the guide box. The inner rods are slidably sleeved inside the corresponding outer tubes.

[0007] Preferably, the distance control and horizontal adjustment assembly includes a PLC controller, an electric telescopic rod, a movable base, a movable plate, two horizontal guide rods, a laser rangefinder sensor, and a reference plate. The PLC controller and the electric telescopic rod are both fixedly installed on the right side of the storage box. The movable base is fixedly connected to the extended end of the electric telescopic rod. The movable plate is fixedly connected to the bottom of the movable base and is in movable contact with the top of the guide box. The stop rod is welded and fixed to the bottom right side of the movable plate. The two horizontal guide rods are both fixedly connected to the right side of the storage box. The movable plate is slidably sleeved on the two horizontal guide rods. The laser rangefinder sensor is fixedly installed on the top of the electric telescopic rod. The reference plate is located to the right of the laser rangefinder sensor and is bonded and fixed to the left side of the movable base. The laser rangefinder sensor and the electric telescopic rod are both electrically connected to the PLC controller.

[0008] Preferably, a lithium battery is fixedly installed on the top of the base, and the electric push rod, electric telescopic rod, PLC controller and laser rangefinder are all electrically connected to the lithium battery.

[0009] Preferably, a limiting groove is provided on the right side of the inner rod, and a limiting block that is slidably connected to the corresponding limiting groove is fixedly connected to the inner wall of the right side of the outer tube.

[0010] Preferably, the left side of the movable plate has two horizontal guide grooves that are respectively slidably fitted onto the outer side of the corresponding horizontal guide rod.

[0011] Preferably, the distance between the laser rangefinder and the reference plate is the same as the distance between the stop bar and the guide box.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. Through the combination of the labeling machine belt conveyor, separator, guide box, storage box, inclined guide plate and limit bar, the labeling machine can automatically feed and transport multiple bottle columns to be labeled one by one by gravity in conjunction with the inclined surface and limit bar. 2. Through the combination of the storage box, guide box, limit bar, and distance control adjustment component, the system can assist personnel in automatically and accurately controlling the distance of the limit bar for horizontal movement. This allows for precise adjustment of the feeding distance according to the different diameters of the bottles to be labeled, enabling precise feeding of bottles of different diameters one by one. This avoids the mess caused by feeding multiple bottles at the same time, which would make subsequent labeling difficult. The system achieves automatic and orderly feeding, reduces manual feeding and adjustment, lowers labor costs, and improves production efficiency. 3. Through the combination of the set guide box, base, lockable universal wheels and vertical guide lifting drive assembly, the guide box can be flexibly raised and lowered to adjust the guide discharge height according to the different heights of the labeling machine belt conveyor. It is convenient and flexible to use, and can be used with labeling machine belt conveyors of different heights. It has the effect of multi-height applicability and improves applicability.

[0013] This utility model, through a series of structures, can automatically feed and convey multiple bottle columns to be labeled one by one using gravity, an inclined surface, and a stop. It facilitates the automatic and precise lateral adjustment of the stop rod by auxiliary personnel, enabling precise feeding of bottle columns with different diameters. This avoids the mess caused by feeding multiple bottle columns at the same time, which would make subsequent labeling difficult. It achieves automatic and orderly feeding, reduces manual feeding and adjustment, and labor costs, improves production efficiency, and can flexibly raise and lower the guide box to adjust the feeding height according to the height of different labeling machine belt conveyors, thus improving applicability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the automatic straightening and feeding mechanism of the labeling machine proposed in this utility model; Figure 2 This is a three-dimensional structural diagram of the feeding mechanism body of the automatic straightening and feeding mechanism of the labeling machine proposed in this utility model. Figure 3 This is a cross-sectional view of the automatic straightening and feeding mechanism of the labeling machine proposed in this utility model.

[0015] In the diagram: 100, Labeling machine belt conveyor; 200, Divider plate; 1, Base; 101, Lockable caster wheel; 2, Material box; 201, Storage box; 202, Inclined guide plate; 3, Electric push rod; 301, Outer tube; 302, Inner rod; 4, PLC controller; 401, Electric telescopic rod; 402, Moving seat; 403, Laser rangefinder sensor; 404, Reference plate; 405, Moving plate; 406, Horizontal guide rod; 407, Limiting rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 3 As shown, the automatic straightening and unloading mechanism of the labeling machine proposed in this embodiment includes a unloading mechanism body disposed on one side of the labeling machine belt conveyor 100. The labeling machine belt conveyor 100 includes a conveyor belt, and multiple partition plates 200 are fixedly connected at equal intervals on the outer side of the conveyor belt. The unloading mechanism body includes: The base 1 has four locking casters 101 rotatably mounted at its bottom corners; The guide box 2 has an inclined bottom inner wall and openings on its top and right sides. A storage box 201, which also has openings on its top and bottom, is fixedly connected to its top left side. An inclined guide plate 202 is fixedly connected to the right inner wall of the storage box 201. Multiple bottle pillars to be labeled are in movable contact between the front and rear inner walls of the storage box 201 and the guide box 2. The inclined guide plate 202 is used to guide the bottle pillars to be labeled in the storage box 201 to slide down into the guide box 2 under the help of gravity. The guide box 2 is designed to automatically guide the bottle column to be labeled to the right without power by using the inclined surface of its bottom inner wall. The bottle column to be labeled falls onto the labeling machine belt conveyor 100 for conveying. Using the multiple partition plates 200, when the conveyor belt of the labeling machine belt conveyor 100 rotates, the bottle column to be labeled is conveyed one by one into the space between the corresponding two partition plates 200 and is conveyed to the right to the external labeling machine for labeling. The vertical guide lifting drive assembly is installed between the bottom of the guide box 2 and the top of the base 1. The vertical guide lifting drive assembly is used to drive the guide box 2 to lift according to the different heights of the labeling machine belt conveyor 100, and to flexibly adjust the height so as to be suitable for guiding and feeding materials to the labeling machine belt conveyor 100 at different heights. The distance control and horizontal adjustment component is fixedly connected to the right side of the storage box 201. Three limit rods 407, all located on the right side of the guide box 2, are fixedly connected to its bottom right side. The distance control and horizontal adjustment component is used to drive the limit rods 407 to control the distance and adjust the horizontal movement, so as to accurately adjust the feeding distance according to the bottle column pieces with different diameters to be labeled. This allows for the precise feeding of bottle column pieces with different diameters one by one, avoiding the mess caused by feeding multiple bottle column pieces at the same time, and realizing automatic and orderly feeding.

[0018] Furthermore, such as Figure 2 and 3 As shown, the vertical guide lifting drive assembly includes four outer tubes 301, four inner rods 302, and an electric push rod 3. The electric push rod 3 is fixedly installed on the top of the base 1, and the extended end of the electric push rod 3 is fixedly connected to the bottom of the guide box 2. The four outer tubes 301 are rectangularly fixedly connected to the top of the base 1, and the four inner rods 302 are rectangularly fixedly connected to the bottom of the guide box 2. The inner rods 302 are slidably sleeved inside the corresponding outer tubes 301. In this embodiment, a limiting groove is provided on the right side of the inner rod 302, and a limiting block that is slidably connected to the corresponding limiting groove is fixedly connected to the inner wall of the right side of the outer tube 301, so as to limit the inner rod 302 and prevent it from falling off. In this implementation scheme, four outer tubes 301, four inner rods 302, and an electric push rod 3 work together. The electric push rod 3 drives the guide box 2 to move up and down. The guide box 2 drives the four inner rods 302 to slide vertically within the four outer tubes 301 to perform vertical guiding work. This achieves the effect of flexibly adjusting the height of the guide box 2 according to different heights of the labeling machine belt conveyor 100, so as to be applicable to the guiding and feeding work on the labeling machine belt conveyor 100 of different heights. It has the effect of multi-height applicability and improves applicability.

[0019] Furthermore, such as Figure 2 and 3 As shown, the distance control and horizontal adjustment assembly includes a PLC controller 4, an electric telescopic rod 401, a movable base 402, a movable plate 405, two horizontal guide rods 406, a laser rangefinder sensor 403, and a reference plate 404. The PLC controller 4 and the electric telescopic rod 401 are both fixedly installed on the right side of the storage box 201. The movable base 402 is fixedly connected to the extended end of the electric telescopic rod 401. The movable plate 405 is fixedly connected to the bottom of the movable base 402 and is in movable contact with the top of the guide box 2. The stop rod 407 is welded and fixed to the bottom right side of the movable plate 405. The two horizontal guide rods 406 are both fixedly connected to the right side of the storage box 201. The movable plate 405 is slidably sleeved on the two horizontal guide rods 406. The laser rangefinder sensor 403 is fixedly installed on the top of the electric telescopic rod 401. The reference plate 404 is located to the right of the laser rangefinder sensor 403 and is bonded and fixed to the left side of the movable base 402. The laser rangefinder sensor 403 and the electric telescopic rod 401 are both electrically connected to the PLC controller 4. In this embodiment, two horizontal guide grooves are provided on the left side of the movable plate 405, which are respectively slidably fitted to the outer side of the corresponding horizontal guide rod 406, so as to guide the movable plate 405 laterally. Two limiting holes are provided at the bottom of the movable plate 405, which are respectively connected to the corresponding horizontal guide grooves. A limiting slider is fixedly connected to the bottom of the horizontal guide rod 406 and slidably connected to the corresponding limiting hole, so as to limit the movable plate 405 and prevent it from falling off. The distance between the laser range sensor 403 and the reference plate 404 is the same as the distance between the stop rod 407 and the guide box 2. In this implementation scheme, the PLC controller 4, electric telescopic rod 401, movable base 402, movable plate 405, two horizontal guide rods 406, laser rangefinder 403, and reference plate 404 work together. Based on the different diameters of the bottles to be labeled, the PLC controller 4 pre-sets a distance value to control the closing of the electric telescopic rod 401. When an operator operates the PLC controller 4 to activate the laser rangefinder 403, the laser rangefinder 403 detects the distance between itself and the reference plate 404, converts it into a standard electrical signal, and transmits it to the PLC controller 4. The PLC controller 4 converts the received standard electrical signal into an actual distance value using analog-to-digital conversion. When the distance value is lower or higher than the preset value, the PLC controller... The device 4 controls the electric telescopic rod 401 to start in the forward or reverse direction, which drives the moving seat 402 to move laterally. The moving seat 402 drives the moving plate 405 and the reference plate 404 to move laterally. The moving plate 405 drives the limit rod 407 to move laterally. When the distance value measured by the laser range sensor 403 reaches the preset value, the PLC controller 4 controls the electric telescopic rod 401 to automatically close, realizing the effect of automatic and precise control of the distance and lateral movement of the limit rod 407. This allows for precise adjustment of the feeding spacing according to the different diameter bottle columns to be labeled, so as to accurately feed the bottle columns to be labeled one by one with different diameters, avoiding the mess caused by feeding multiple bottle columns to be labeled at the same time, and realizing automatic and orderly feeding.

[0020] Furthermore, a lithium battery is fixedly installed on the top of the base 1, and the electric push rod 3, electric telescopic rod 401, PLC controller 4 and laser range sensor 403 are all electrically connected to the lithium battery.

[0021] It should be noted that the lithium battery used is the P760S model from Lunqu Technology. This lithium battery integrates charge and discharge protection functions and can stably and safely power the electric telescopic pole 401, electric push rod 3, PLC controller 4, and laser rangefinder 403. All the above components are electrically connected through flexible wires. Considering that the electric telescopic pole 401, PLC controller 4, and laser rangefinder 403 are upper movable components, the flexible wires are reserved with appropriate bending lengths to accommodate their displacement requirements. In addition, the electric telescopic pole 401, laser rangefinder 403, and PLC controller 4 are directly connected by wires to form a controlled electrical connection, which is a conventional wire control technology in the field of power supply and control. Its specific implementation method is common knowledge and will not be described in detail here. It should be further noted that the PLC controller 4 is preferably a Siemens S7-200SMART programmable controller. This controller integrates an analog input module, which can directly receive the standard electrical signal output by the laser rangefinder 403, and use its own analog-to-digital conversion function to accurately convert the electrical signal into the actual distance value, ensuring the accuracy of data detection; the laser rangefinder 403 is preferably a JGWY3 type rangefinder sensor. It should be further explained that the labeling machine belt conveyor 100 is a belt conveyor at the inlet of the labeling machine, which belongs to the conventional belt conveyor structure. It mainly consists of two drive wheels, a motor, a support frame, and a conveyor belt. The two drive wheels are rotatably mounted inside the support frame, and the conveyor belt is connected to the two drive wheels. The motor is mounted on the support frame and is used to drive one of the drive wheels to rotate, thereby driving the conveyor belt to run. The conventional composition of this belt conveyor is existing known technology, so it will not be described in detail.

[0022] The usage method of this embodiment is as follows: When using the automatic straightening and feeding mechanism of the labeling machine, the locking universal wheels 101 facilitate the flexible movement of the feeding mechanism body by the operator. When it is necessary to adjust the height of the guide box 2 according to the different heights of the labeling machine belt conveyor 100, the operator activates the electric push rod 3 to drive the guide box 2 to move upward or downward. The guide box 2 drives the four inner rods 302 to slide vertically within the four outer tubes 301 to perform vertical guiding work until the bottom right side of the guide box 2 is adjusted to be above the upper left partition plate 200. The distance between the two is preferably adjusted to be less than the diameter of a single bottle column to be labeled, so as to achieve the effect of flexibly adjusting the height of the guide box 2 according to the different heights of the labeling machine belt conveyor 100. This allows for convenient and flexible application and is applicable to labeling machine belt conveyors 100 of different heights. With the help of 0, it has the effect of being applicable to multiple heights, improving its applicability; the bottles to be labeled are neatly stacked in the storage box 201. The inclined guide plate 202 guides the bottles to be labeled in the storage box 201 to slide down into the guide box 2. Using the inclined surface of the bottom inner wall of the guide box 2, the bottles to be labeled are automatically guided to the right without power. Three limit rods 407 are used to limit the flow on the right side of the guide box 2, so that only one bottle to be labeled can fall at a time. The bottles to be labeled fall onto the labeling machine belt conveyor 100 for conveying. Using multiple partition plates 200 set on the outside of the conveyor belt, when the conveyor belt of the labeling machine belt conveyor 100 rotates, the bottles to be labeled are conveyed one by one into the corresponding two partition plates 200 and are conveyed to the right to the external labeling machine for labeling. When the drop distance needs to be adjusted according to the diameter of the bottle column to be labeled, the PLC controller 4 is used to preset the closing distance value of the electric telescopic rod 401 based on the different diameters of the bottle column. The operator operates the PLC controller 4 to activate the laser rangefinder 403. The laser rangefinder 403 detects the distance between itself and the reference plate 404, converts it into a standard electrical signal, and transmits it to the PLC controller 4. The PLC controller 4 converts the received standard electrical signal into an actual distance value through analog-to-digital conversion. When the distance value is lower or higher than the preset value, the PLC controller 4 controls the electric telescopic rod 401 to start in the corresponding forward or reverse direction, causing it to drive the moving base 402 to move laterally. The moving base 402 drives the moving plate 405 and the reference plate 404 to move laterally, and the moving plate 405 drives the stop bar 407 to move laterally. When the distance measured by the laser rangefinder 403 reaches the preset value, the PLC controller 4 controls the electric telescopic rod 401 to automatically close, achieving the effect of automatic and precise lateral adjustment of the stop limit rod 407. This allows for precise adjustment of the feeding distance according to the different diameters of the bottle columns to be labeled, enabling precise feeding of bottle columns of different diameters one by one. This avoids the phenomenon of multiple bottle columns being fed at the same time, which would cause mess and make subsequent labeling difficult. It realizes automatic and orderly feeding, reduces manual feeding and adjustment, reduces labor costs, and improves production efficiency. With the adjustable feeding distance, it can also be adapted to different spacings of the partition plates 200 on the belt conveyor 100 of different labeling machines, further adapting to labeling machine belt conveyors 100 with various partition plate 200 spacings.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic straightening and unloading mechanism for a labeling machine, comprising an unloading mechanism body disposed on one side of a belt conveyor (100) of the labeling machine, wherein the belt conveyor (100) of the labeling machine includes a conveyor belt, and a plurality of partition plates (200) are fixedly connected at equal intervals on the outer side of the conveyor belt, characterized in that: The feeding mechanism body includes: The base (1) has four locking casters (101) rotatably mounted at its bottom corners. The bottom inner wall of the guide box (2) is set as an inclined surface, and the top and right sides are both set as openings. The top left side is fixedly connected to the storage box (201) which is set as an opening at both the top and bottom. The right inner wall of the storage box (201) is fixedly connected to the inclined guide plate (202). There are multiple bottle columns to be labeled between the front and rear inner walls of the storage box (201) and the guide box (2). The vertical guide lifting drive assembly is installed between the bottom of the guide box (2) and the top of the base (1); The distance control and horizontal adjustment assembly is fixedly connected to the right side of the storage box (201), and three limit rods (407) located on the right side of the bottom right side of the assembly are fixedly connected to it.

2. The automatic leveling and feeding mechanism of the labeling machine according to claim 1, characterized in that: The vertical guide lifting drive assembly includes four outer tubes (301), four inner rods (302), and an electric push rod (3). The electric push rod (3) is fixedly installed on the top of the base (1), and the extended end of the electric push rod (3) is fixedly connected to the bottom of the guide box (2). The four outer tubes (301) are rectangularly fixedly connected to the top of the base (1), and the four inner rods (302) are rectangularly fixedly connected to the bottom of the guide box (2). The inner rods (302) are slidably sleeved inside the corresponding outer tubes (301).

3. The automatic leveling and feeding mechanism of the labeling machine according to claim 2, characterized in that: The distance control and horizontal adjustment assembly includes a PLC controller (4), an electric telescopic rod (401), a movable base (402), a movable plate (405), two horizontal guide rods (406), a laser rangefinder (403), and a reference plate (404). The PLC controller (4) and the electric telescopic rod (401) are both fixedly installed on the right side of the storage box (201). The movable base (402) is fixedly connected to the extended end of the electric telescopic rod (401), and the movable plate (405) is fixedly connected to the bottom of the movable base (402). The movable plate (405) is connected to the top of the guide box (2). The moving contact, the limit rod (407) is welded and fixed to the bottom right side of the moving plate (405), the two horizontal guide rods (406) are fixedly connected to the right side of the storage box (201), the moving plate (405) is slidably sleeved on the two horizontal guide rods (406), the laser range sensor (403) is fixedly installed on the top of the electric telescopic rod (401), the reference plate (404) is located on the right side of the laser range sensor (403) and is bonded and fixed to the left side of the moving seat (402), the laser range sensor (403) and the electric telescopic rod (401) are both electrically connected to the PLC controller (4).

4. The automatic leveling and feeding mechanism of the labeling machine according to claim 3, characterized in that: A lithium battery is fixedly installed on the top of the base (1), and the electric push rod (3), electric telescopic rod (401), PLC controller (4) and laser range sensor (403) are all electrically connected to the lithium battery.

5. The automatic leveling and feeding mechanism of the labeling machine according to claim 2, characterized in that: A limiting groove is provided on the right side of the inner rod (302), and a limiting block that is slidably connected to the corresponding limiting groove is fixedly connected to the inner wall of the right side of the outer tube (301).

6. The automatic leveling and feeding mechanism of the labeling machine according to claim 3, characterized in that: The left side of the movable plate (405) has two horizontal guide grooves that are respectively slidably fitted to the outer side of the corresponding horizontal guide rod (406).

7. The automatic leveling and feeding mechanism of the labeling machine according to claim 3, characterized in that: The distance between the laser rangefinder (403) and the reference plate (404) is the same as the distance between the stop bar (407) and the guide box (2).

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