An improved mechanism for automatically attaching large and small labels

Abstract

A universal automatic large and small labeling improvement mechanism, the invention relates to the technical field of carrier packaging equipment; a feeding mechanism is provided on the upper side of the front surface of a fixed plate, a No. 1 support plate in the feeding mechanism is fixed on the fixed plate, a labeling mechanism is provided on the lower right side of the feeding mechanism, a No. 2 support plate in the labeling mechanism is fixed on the front side wall of the lower side of the fixed plate, the right side of the No. 2 support plate is tilted downward, a winding mechanism is fixed on the center of the right side wall of the front side of the fixed plate, and the roller in the winding mechanism is suspended above the adjustable stripping knife mechanism in the labeling mechanism; positioning is performed by an optical fiber sensor, a telescopic cylinder supports the material tray, a stripping mechanism strips the label, and a label pressing cylinder presses down to make it fit flat, when using large-sized labels, the label pressing mechanism cannot completely press the labels, and the labels can be blown flat by blowing, and when sticking small labels, the stripping knife angle is adjusted to reduce the height between the label and the product to be stuck. The invention has the advantages of reasonable setting and low manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of carrier packaging equipment technology, and specifically to a universal automatic labeling improvement mechanism. Background Art

[0002] Labeling machines are devices that use adhesives to affix paper or metal foil labels to specified packaging containers. Labeling machines are an indispensable part of modern packaging. Currently, the types of labeling machines produced in my country are gradually increasing, and the technical level has also greatly improved. The backward situation of manual and semi-automatic labeling has been transformed into a situation where automated high-speed labeling machines occupy a large market share. However, traditional labeling mechanisms cannot affix labels of different specifications in the existing IC, LED and other carrier tape packaging industries, or the specifications of the labels affixed are too different, requiring dedicated machines for specific purposes and not universally applicable. There is an urgent need for improvement. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a universally applicable automatic labeling mechanism that is reasonably designed and easy to use. It uses fiber optic sensors for positioning, a telescopic cylinder to hold the material tray in place, a peeling mechanism to peel off the label, and a pressing cylinder to press it down, ensuring a smooth fit. When using large labels, if the pressing mechanism cannot fully press the label, it can be flattened by blowing air. When applying small labels, the peeling blade angle can be adjusted to lower the height between the label and the product.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: it includes a fixed plate, a feeding mechanism, a labeling mechanism, and a winding mechanism. The feeding mechanism is provided on the upper side of the front surface of the fixed plate. The first support plate in the feeding mechanism is fixed on the fixed plate. The labeling mechanism is provided on the lower right side of the feeding mechanism. The second support plate in the labeling mechanism is fixed on the front side wall of the lower side of the fixed plate. The right side of the second support plate is inclined downward. The winding mechanism is fixed on the center of the right side wall of the front side of the fixed plate. The roller in the winding mechanism is suspended above the adjustable peeling knife mechanism in the labeling mechanism.

[0005] The aforementioned feeding mechanism also includes a material tray detection reflector, a limiting rod, a clamping and separating cylinder, a first blocking cylinder, and an inclined slide plate. The center of the first support plate has a circular hole, and several limiting rods are provided on the left side of the circular hole. The limiting rods are arranged at equal angles with the center of the circular hole. The lower end of the limiting rod is fixed to the left side of the upper surface of the first support plate. Material tray detection reflectors are fixed at the center of both the left and right sides of the upper surface of the first support plate. The material tray detection reflectors are all set directly opposite the circular hole. An inclined slide plate is provided on the lower side of the circular hole. The left side of the inclined slide plate is fixedly connected to the left side of the lower surface of the first support plate through a connector. The right end of the inclined slide plate is inclined downward. The inclined slide plate is set on the same plane as the second support plate. A first blocking cylinder is provided on the left side of the lower surface of the inclined slide plate. A clamping and separating cylinder is provided on the upper side of the inclined slide plate. The clamping and separating cylinder is fixed to the lower surface of the first support plate through a connecting plate. Both the clamping and separating cylinder and the first blocking cylinder are connected to an external air source.

[0006] The aforementioned labeling mechanism also includes a peeling air pipe, an air blowing plate, a tray clamping cylinder, a second blocking cylinder, a labeling cylinder, a positioning motor, a label detection fiber optic cable, and a position detection fiber optic cable. One end of the peeling air pipe passes through a locking pin and is positioned directly opposite the air blowing plate. The locking pin is fixed to the base plate of the adjustable peeling knife mechanism, which is fixed to the third support plate. The other end of the peeling air pipe passes around the front end of the third support plate and is inserted into the second support plate. The peeling air pipe is connected to an external air source. A tray clamping cylinder is fixed to the lower surface of the second support plate. This tray clamping cylinder is connected to an external air source and is fixed to the lower surface of the second support plate. The piston rod of the tray clamping cylinder passes through the second support plate and is flush with the upper surface of the second support plate. A second blocking cylinder is located to the right of the tray clamping cylinder. The second blocking cylinder is connected to an external air source and is fixed to the upper right side of the lower surface of the second support plate. After the piston rod of the cylinder passes through the second support plate, it is set in the same plane as the upper surface of the second support plate. Support feet are fixed on the upper surfaces of the front and rear sides of the second support plate. The support feet are fixed to the four corners of the lower surface of the third support plate. A label detection fiber is provided on the right side of the upper surface of the third support plate. A position detection fiber is provided on the left front side of the label detection fiber. The lower end of the position detection fiber is fixed to the third support plate. A positioning motor is provided on the left side of the label detection fiber. The positioning motor is connected to an external power source. The positioning motor is fixed to the third support plate by a bracket. The output shaft of the positioning motor passes through the bracket and the third support plate in sequence and is exposed below the third support plate. A labeling cylinder is provided on the left side of the positioning motor. The labeling cylinder is connected to an external air source. The labeling cylinder is fixed to the front side wall of the fixed plate by a bracket. The piston rod of the labeling cylinder is fixedly connected to the air blowing plate. The air blowing plate is suspended above the third support plate. The air blowing plate is located on the right side of the adjustable peeling knife mechanism.

[0007] Furthermore, a labeling auxiliary cylinder is fixed at the center of the lower surface of the second support plate. The labeling auxiliary cylinder is connected to an external air source. After the piston rod of the labeling auxiliary cylinder passes through the second support plate, it is set in the same plane as the upper surface of the second support plate. The labeling auxiliary cylinder is located to the left of the material tray clamping cylinder.

[0008] Furthermore, a reinforcing plate is fixed on the annular wall of the limiting rod away from the circular hole. The reinforcing plate is arranged in an "L" shape, and the horizontal plate of the reinforcing plate is fixed on the No. 1 support plate.

[0009] Furthermore, a stop bar is provided on the outer edge of the right side of the circular hole. The lower end of the stop bar is fixed to the upper surface of the first support plate. The side wall of the stop bar adjacent to the circular hole is set in the same plane as the inner side wall of the circular hole.

[0010] The beneficial effects of the present invention after adopting the above structure are as follows:

[0011] 1. Positioning is achieved through fiber optic sensors, telescopic cylinders hold the material tray in place, the label peeling mechanism peels off the label, and the label pressing cylinder presses down to make it adhere flat.

[0012] 2. When using large-sized labels, if the label pressing mechanism cannot fully press down the label, the label can be flattened by blowing air. When applying small labels, adjust the peeling blade angle to lower the height between the label and the product.

[0013] 3. A second blocking cylinder is provided on the lower surface of the second support plate, which can block the sliding material tray and keep the material tray in the designated position. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 for Figure 1 Enlarged view of section A.

[0016] Figure 3 for Figure 1 Enlarged view of section B in the middle.

[0017] Figure 4 for Figure 3 Enlarged view of section C.

[0018] Explanation of reference numerals in the attached figures:

[0019] Fixed plate 1, feeding mechanism 2, No. 1 support plate 2-1, material tray detection reflective photoelectric sensor 2-2, limit rod 2-3, clamping and separating cylinder 2-4, No. 1 blocking cylinder 2-5, inclined slide plate 2-6, round hole 2-7, labeling mechanism 3, No. 2 support plate 3-1, adjustable peeling knife mechanism 3-2, peeling air pipe 3-3, air blowing plate 3-4, material tray clamping cylinder 3-5, No. 2 blocking cylinder 3-6, labeling cylinder 3-7, positioning motor 3-8, label detection fiber optic cable 3-9, position detection fiber optic cable 3-10, locking pin 3-11, No. 3 support plate 3-12, support leg 3-13, winding mechanism 4, labeling auxiliary cylinder 5, reinforcing plate 6, stop bar 7. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1-4As shown, this specific embodiment adopts the following technical solution: It includes a fixed plate 1, a feeding mechanism 2, a labeling mechanism 3, and a winding mechanism 4. The feeding mechanism 2 is provided on the upper side of the front surface of the fixed plate 1. The first support plate 2-1 of the feeding mechanism 2 is welded and fixed to the fixed plate 1. The feeding mechanism 2 also includes a tray detection reflective photoelectric sensor 2-2, a limiting rod 2-3, a clamping and separating cylinder 2-4, a first blocking cylinder 2-5, and a slanted slide 2-6. A circular hole 2-7 is opened in the center of the first support plate 2-1. Several limiting rods 2-3 are provided on the left side of the circular hole 2-7. Several limiting rods 2-3 are provided on the left side of the circular hole 2-7. Positioning rod 2-3 is set at equal angles with the dot of circular hole 2-7 as the center. The lower end of positioning rod 2-3 is welded and fixed to the left side of the upper surface of support plate 2-1. A reinforcing plate 6 is bolted to the annular wall of the side of positioning rod 2-3 away from circular hole 2-7. The reinforcing plate 6 is set in an "L" shape. The horizontal plate of the reinforcing plate 6 is bolted to support plate 2-1 to increase the stability of positioning rod 2-3. A stop rod 7 is provided on the outer edge of the right side of circular hole 2-7. The lower end of the stop rod 7 is welded and fixed to the upper surface of support plate 2-1. The stop rod 7 is adjacent to the circular hole. The sidewall of 2-7 is flush with the inner sidewall of the circular hole 2-7, which can limit the movement of the tray. Tray detection reflective photoelectric sensors 2-2 are bolted to the center of both sides of the upper surface of the first support plate 2-1. The tray detection reflective photoelectric sensors 2-2 are directly facing the circular hole 2-7. A slanted slide plate 2-6 is located below the circular hole 2-7. The left side of the slanted slide plate 2-6 is fixedly connected to the left side of the lower surface of the first support plate 2-1 via a connector. Both ends of the connector are welded to the first support plate 2-1 and the slanted slide plate 2-6 respectively. The right end is inclined downwards, and the inclined slide plate 2-6 is set on the same plane as the second support plate 3-1. A first blocking cylinder 2-5 is fixed to the left side of the lower surface of the inclined slide plate 2-6 by bolts. A clamping and separating cylinder 2-4 is provided on the upper side of the inclined slide plate 2-6. The clamping and separating cylinder 2-4 is fixed to the lower surface of the first support plate 2-1 by a connecting plate. The connecting plate is welded to the lower surface of the first support plate 2-1. The clamping and separating cylinder 2-4 is fixed to the connecting plate by bolts. Both the clamping and separating cylinder 2-4 and the first blocking cylinder 2-5 are connected to an external air source.

[0022] A labeling mechanism 3 is located on the lower right side of the feeding mechanism 2. The second support plate 3-1 of the labeling mechanism 3 is welded and fixed to the front side wall of the lower side of the fixing plate 1. The right side of the second support plate 3-1 is inclined downwards. The labeling mechanism 3 also includes a peeling air pipe 3-3, an air blowing plate 3-4, a material tray clamping cylinder 3-5, a second blocking cylinder 3-6, a labeling cylinder 3-7, a positioning motor 3-8, a label detection fiber optic cable 3-9, and a position detection fiber optic cable 3-10. One end of the peeling air pipe 3-3 passes through a locking pin 3-11 and is positioned directly opposite the air blowing plate 3-4. The locking pin 3-11 is fixed to the base plate of the adjustable peeling knife mechanism 3-2 by bolts. The adjustable peeling knife mechanism 3-2 is fixed to the third support plate 3-12 by bolts. The other end of the peeling air pipe 3-3... One end passes over the front end of support plate 3-12 and is inserted into support plate 3-1. The air blowing pipe 3-3 is disconnected and connected to an external air source. A material tray clamping cylinder 3-5 is bolted to the lower surface of support plate 3-1. This material tray clamping cylinder 3-5 is connected to an external air source and is fixed to the lower surface of support plate 3-1. The piston rod of the material tray clamping cylinder 3-5 passes through support plate 3-1 and is flush with the upper surface of support plate 3-1. A second blocking cylinder 3-6 is located on the right side of the material tray clamping cylinder 3-5. The second blocking cylinder 3-6 is connected to an external air source and is bolted to the right side of the lower surface of support plate 3-1. After the piston rod passes through the second support plate 3-1, it is set in the same plane as the upper surface of the second support plate 3-1. A labeling auxiliary cylinder 5 is fixed to the center of the lower surface of the second support plate 3-1 by bolts. The labeling auxiliary cylinder 5 is connected to an external air source. After the piston rod of the labeling auxiliary cylinder 5 passes through the second support plate 3-1, it is set in the same plane as the upper surface of the second support plate 3-1. The labeling auxiliary cylinder 5 is located to the left of the material tray clamping cylinder 3-5, which can increase the stability of the material tray movement. Support legs 3-13 are welded and fixed to the upper surfaces of the front and rear sides of the second support plate 3-1. The support legs 3-13 are welded and fixed to the four corners of the lower surface of the third support plate 3-12. A label is fixed to the right side of the upper surface of the third support plate 3-12 by bolts. The label detection fiber 3-9 has a position detection fiber 3-10 located on its left front side. The lower end of the position detection fiber 3-10 is fixed to the third support plate 3-12 with bolts. A positioning motor 3-8 is located on the left side of the label detection fiber 3-9. The positioning motor 3-8 is connected to an external power source and is fixed to the third support plate 3-12 by a bracket welded to it. The positioning motor 3-8 is bolted to the bracket. The output shaft of the positioning motor 3-8 passes through the bracket and the third support plate 3-12, and then protrudes below the third support plate 3-12. A labeling cylinder 3-7 is located on the left side of the positioning motor 3-8 and is connected to an external air source.Labeling cylinder 3-7 is fixed to the front wall of fixed plate 1 by a bracket, which is welded to fixed plate 1. Labeling cylinder 3-7 is fixed to the bracket by bolts. The piston rod of labeling cylinder 3-7 is welded to air blowing plate 3-4, which is suspended above support plate 3-12. Air blowing plate 3-4 is located to the right of adjustable peeling knife mechanism 3-2. A winding mechanism 4 is bolted to the center of the right side wall of the front side of fixed plate 1. The roller in winding mechanism 4 is suspended above the adjustable peeling knife mechanism 3-2 in labeling mechanism 3.

[0023] The working principle of this specific implementation is as follows: First, an empty material tray is placed in the round hole 2-7 on the first support plate 2-1 and clamped by the clamping and separating cylinder 2-4. Then, the clamping and separating cylinder 2-4 is activated, releasing the empty material tray, which falls onto the inclined slide plate 2-6 and is blocked by the first blocking cylinder 2-5. Then, the first blocking cylinder 2-5 is activated, releasing the empty material tray, which slides towards the second support plate 3-1 until it reaches the position of the second blocking cylinder 3-6, where it is blocked by the piston rod. Then, the first support plate 2-1 in the feeding mechanism 2 is filled with material trays. The bottommost material tray is blocked by the clamping and separating cylinder 2-4. After all the material trays on the first support plate 2-1 are filled, they are detected by the material tray detection reflective photoelectric sensor 2-2. After the detection is completed, the clamping and separating cylinder 2-4 is activated, and the bottommost material tray falls onto the inclined slide plate 2-6. The material slides upwards via the inclined slide plate 2-6 onto the second support plate 3-1, where it is blocked by the second blocking cylinder 3-6. Then, it is detected by the label detection fiber optic cable 3-9, activating the tray clamping cylinder 3-5 and the labeling auxiliary cylinder 5. The piston rods of these cylinders push the tray upwards on the second support plate 3-1. The center of the tray is positioned on the output shaft of the positioning motor 3-8. The positioning motor 3-8 is then activated. 8. Rotation and position detection fiber optic cable 3-10 can detect the labeling position and locate the labeling position on the tray. The winding mechanism 4 starts to wind up and peel off the label. During the peeling process, air is blown through the peeling air pipe 3-3 to prevent the label from sagging and sticking to the tray. After the label is in place, the labeling cylinder 3-7 presses down to press the label onto the tray. The labeling cylinder 3-7 is equipped with an air blowing plate 3-4. After pressing, air is blown to press the part of the label that was not pressed onto the tray, thus completing the labeling.

[0024] The beneficial effects of this specific embodiment after adopting the above structure are as follows:

[0025] 1. Positioning is achieved through fiber optic sensors, telescopic cylinders hold the material tray in place, the label peeling mechanism peels off the label, and the label pressing cylinder presses down to make it adhere flat.

[0026] 2. When using large-sized labels, if the air blowing plate 3-4 cannot completely cover the label, the label can be flattened by blowing air. When applying small labels, adjust the peeling blade angle to lower the height between the label and the product.

[0027] 3. A second blocking cylinder 3-6 is provided on the lower surface of the second support plate 3-1, which can block the sliding material tray and keep the material tray in the designated position.

[0028] 4. A labeling auxiliary cylinder 5 is provided on the left side of the material tray clamping cylinder 3-5. The material tray can be pushed by the labeling auxiliary cylinder 5 to provide assistance.

[0029] Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A universal automatic labeling and labeling improvement mechanism, characterized in that: It comprises a fixed plate (1), a feeding mechanism (2), a labeling mechanism (3) and a reeling mechanism (4); a feeding mechanism (2) is arranged on the upper side of the front surface of the fixed plate (1); a No. 1 support plate (2-1) in the feeding mechanism (2) is fixed on the fixed plate (1); a labeling mechanism (3) is arranged on the lower right side of the feeding mechanism (2); a No. 2 support plate (3-1) in the labeling mechanism (3) is fixed on the front side wall of the lower side of the fixed plate (1); the right side of the No. 2 support plate (3-1) is arranged to be tilted downward; a reeling mechanism (4) is fixed on the center of the right side wall of the front side of the fixed plate (1); and a roller in the reeling mechanism (4) is suspended above an adjustable peeling knife mechanism (3-2) in the labeling mechanism (3); The feeding mechanism (2) further comprises a tray detection reflection photoelectric device (2-2), a limit rod (2-3), a clamping and separating cylinder (2-4), a No. 1 blocking cylinder (2-5) and an inclined slide plate (2-6). A circular hole (2-7) is provided at the center of the No. 1 support plate (2-1). A plurality of limit rods (2-3) are provided on the left side of the circular hole (2-7). The plurality of limit rods (2-3) are arranged at equal angles with the circular point of the circular hole (2-7) as the center. The lower end of the limit rod (2-3) is fixed to the left side of the upper surface of the No. 1 support plate (2-1). The tray detection reflection photoelectric device (2-2) is fixed at the center of the left and right sides of the upper surface of the No. 1 support plate (2-1). The tray detection reflection photoelectric device (2-2) is directly facing the circular hole. (2-7) is provided, an inclined slide plate (2-6) is provided on the lower side of the circular hole (2-7), the left side of the inclined slide plate (2-6) is fixedly connected to the left side of the lower surface of the first support plate (2-1) through a connecting piece, the right end of the inclined slide plate (2-6) is tilted downward, the inclined slide plate (2-6) and the second support plate (3-1) are arranged in the same plane, a first blocking cylinder (2-5) is provided on the left side of the lower surface of the inclined slide plate (2-6), a clamping and separating cylinder (2-4) is provided on the upper side of the inclined slide plate (2-6), the clamping and separating cylinder (2-4) is fixed to the lower surface of the first support plate (2-1) through a connecting plate, and the clamping and separating cylinder (2-4) and the first blocking cylinder (2-5) are both connected to an external air source; The labeling mechanism (3) further comprises a stripping air blowing pipe (3-3), an air blowing plate (3-4), a material tray tightening cylinder (3-5), a second blocking cylinder (3-6), a labeling cylinder (3-7), a positioning motor (3-8), a label detection optical fiber (3-9) and a position detection optical fiber (3-10); one end of the stripping air blowing pipe (3-3) passes through a locking pin (3-11) and is arranged opposite to the air blowing plate (3-4); the locking pin (3-11) is fixed on a bottom plate in an adjustable stripping knife mechanism (3-2); the adjustable stripping knife mechanism (3-2) is fixed on a third support plate (3-12); the other end of the stripping air blowing pipe (3-3) passes around the front end of the third support plate (3-12) and is inserted into the second support plate (3-1 ), the stripping air blowing pipe (3-3) is connected to an external air source, a tray tightening cylinder (3-5) is fixed on the lower surface of the No. 2 support plate (3-1), the tray tightening cylinder (3-5) is connected to the external air source, the tray tightening cylinder (3-5) is fixed on the lower surface of the No. 2 support plate (3-1), the piston rod of the tray tightening cylinder (3-5) passes through the No. 2 support plate (3-1) and is arranged in the same plane as the upper surface of the No. 2 support plate (3-1), a No. 2 blocking cylinder (3-6) is arranged on the right side of the tray tightening cylinder (3-5), the No. 2 blocking cylinder (3-6) is connected to an external air source, the No. 2 blocking cylinder (3-6) is fixed on the right side of the lower surface of the No. 2 support plate (3-1), and the No. 2 blocking cylinder (3-6) is connected to the external air source. After the piston rod of the cylinder (3-6) passes through the second support plate (3-1), it is arranged in the same plane as the upper surface of the second support plate (3-1). Support feet (3-13) are fixed on the upper surfaces of the front and rear sides of the second support plate (3-1). The support feet (3-13) are respectively fixed to the four corners of the lower surface of the third support plate (3-12). A label detection optical fiber (3-9) is arranged on the right side of the upper surface of the third support plate (3-12). A position detection optical fiber (3-10) is arranged on the left front side of the label detection optical fiber (3-9). The lower end of the position detection optical fiber (3-10) is fixed on the third support plate (3-12). A positioning motor (3-8) is arranged on the left side of the label detection optical fiber (3-9). The positioning motor (3-8) ) is connected to an external power source, the positioning motor (3-8) is fixed on the third support plate (3-12) through a bracket, the output shaft of the positioning motor (3-8) passes through the bracket and the third support plate (3-12) in sequence, and is exposed below the third support plate (3-12), a labeling cylinder (3-7) is provided on the left side of the positioning motor (3-8), the labeling cylinder (3-7) is connected to an external air source, the labeling cylinder (3-7) is fixed to the front side wall of the fixed plate (1) through a bracket, the piston rod of the labeling cylinder (3-7) is fixedly connected to the blowing plate (3-4), the blowing plate (3-4) is suspended above the third support plate (3-12), and the blowing plate (3-4) is arranged on the right side of the adjustable stripping knife mechanism (3-2).

2. A universal automatic labeling and labeling improvement mechanism according to claim 1, characterized in that: A labeling auxiliary cylinder (5) is fixed at the center of the lower surface of the second support plate (3-1). The labeling auxiliary cylinder (5) is connected to an external air source. After the piston rod of the labeling auxiliary cylinder (5) passes through the second support plate (3-1), it is arranged in the same plane as the upper surface of the second support plate (3-1). The labeling auxiliary cylinder (5) is arranged on the left side of the material tray tightening cylinder (3-5), and the labeling auxiliary cylinder (5) pushes the material tray.

3. A universal automatic labeling and improving mechanism according to claim 1, characterized in that: A reinforcing plate (6) is fixed on the annular wall of the limiting rod (2-3) on the side away from the circular hole (2-7); the reinforcing plate (6) is arranged in an "L" shape; a transverse plate of the reinforcing plate (6) is fixed on the first supporting plate (2-1); and the reinforcing plate (6) supports the limiting rod (2-3).

4. The universal automatic large and small labeling improvement mechanism according to claim 1, characterized in that: A blocking rod (7) is provided on the outer edge of the right side of the circular hole (2-7), the lower end of the blocking rod (7) is fixed on the upper surface of the No. 1 support plate (2-1), the side wall of the blocking rod (7) adjacent to one side of the circular hole (2-7) is arranged in the same plane as the inner side wall of the circular hole (2-7), and the blocking rod (7) limits and blocks the right side of the material tray.

5. The universal automatic large and small labeling improvement mechanism according to claim 1, characterized in that: Its working principle is as follows: firstly, an empty material tray is placed in a circular hole (2-7) on a No. 1 support plate (2-1), and clamped by a clamping and separating cylinder (2-4), and then the clamping and separating cylinder (2-4) is started, the clamping and separating cylinder (2-4) releases the empty material tray, and the empty material tray falls onto an inclined slide plate (2-6), and is blocked by a No. 1 blocking cylinder (2-5), and then the No. 1 blocking cylinder (2-5) is started, the No. 1 blocking cylinder (2-5) releases the empty material tray, and the empty material tray moves toward the No. 2 support plate (3 -1) slides to the position of the No. 2 blocking cylinder (3-6), and is blocked by the piston rod of the No. 2 blocking cylinder (3-6), and then the No. 1 support plate (2-1) in the feeding mechanism (2) is filled with material trays, and the lowermost material tray is blocked by the clamping and separation cylinder (2-4). After the material trays on the No. 1 support plate (2-1) are filled, the material tray detection reflection photoelectric (2-2) is used for detection. After the detection is completed, the clamping and separation cylinder (2-4) is started, and the lowermost material tray falls to The material tray is placed on the inclined slide plate (2-6), and then slides onto the second support plate (3-1) via the inclined slide plate (2-6), and is blocked by the second blocking cylinder (3-6). Then, after detection by the label detection optical fiber (3-9), the material tray pressing cylinder (3-5) is started, and the piston rod of the material tray pressing cylinder (3-5) pushes the material tray on the second support plate (3-1) upward, and the center of the material tray is sleeved on the output shaft of the positioning motor (3-8), and the positioning motor (3-8) is started, and the positioning motor (3-8) is moved upward. ) rotates, the position detection optical fiber (3-10) can detect the labeling position, find the labeling position of the material tray, and the reeling mechanism (4) starts to reel and peel the label. During the peeling process, air is blown through the peeling air pipe (3-3) to prevent the label from sagging and sticking to the material tray during the peeling process. After the label is in place, the labeling cylinder (3-7) presses down to press the label onto the material tray, and the labeling cylinder (3-7) is equipped with a blowing plate (3-4). After pressing, air is blown to blow the part of the label that is not pressed onto the material tray to complete the labeling.

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