A label positioning device for a labeling machine

Abstract

This application relates to a label positioning device for a labeling machine, belonging to the field of packaging engineering technology. It includes a support frame, with an intermittent fixing mechanism externally mounted on the support frame. The intermittent fixing mechanism includes a support block, a motor fixedly connected internally to the support block, a rotating shaft fixedly connected to the drive end of the motor, a transmission plate fixedly connected externally to the rotating shaft, a rotating roller rotatably connected externally to the transmission plate, a push plate rotatably connected externally to the rotating roller, and a limit buffer mechanism externally mounted on the push plate. This application utilizes motor drive and mechanical transmission to convert the circular motion of the rotating shaft into the linear reciprocating motion of the push plate, thereby achieving intermittent rotation of the fixed roller, precisely controlling the step-by-step delivery of labels, ensuring consistent label spacing, and ensuring efficient and stable operation of the labeling process.

Description

Technical Field

[0001] This application relates to the field of packaging engineering technology, and in particular to a label positioning device for a labeling machine. Background Technology

[0002] In today's era of rapid industrial automation, the packaging industry has an increasingly urgent need for intelligent, high-precision labeling equipment. As consumer demands for aesthetically pleasing and standardized product packaging continue to rise, the labeling machine, as a crucial link in the packaging production line, directly impacts the product's appearance and brand image through its label positioning accuracy. Especially in sectors with stringent packaging standards, such as food, pharmaceuticals, and daily chemicals, label placement deviations must be controlled within millimeters. Traditional labeling devices, due to limitations in mechanical structure and environmental interference, are no longer sufficient to meet the demands of modern production requiring diverse product varieties and high precision. Therefore, developing a label positioning device with high stability and adaptive adjustment capabilities has become a core issue for improving labeling efficiency and packaging quality.

[0003] A search revealed Chinese Patent Publication No. CN219790780U, which discloses a label horizontal positioning adjustment device for a labeling machine, relating to the field of labeling machine technology. The device includes a frame, comprising a labeling frame and a clamping frame. A working device for labeling fruit wine bottles is fixedly connected to one side of the top of the labeling frame. A clamping device for horizontally positioning the fruit wine bottle is slidably connected to the top of the clamping frame. The clamping device includes a clamping slide plate that can slide in the direction of the working device under the drive of a driving source. This invention, through the setting of the clamping device, changes the spacing between the sliding frames according to the size of the fruit wine bottle to be clamped, and uses a rotatable and elastic clamping roller to clamp the fruit wine bottle. Therefore, while ensuring that the horizontal position of the fruit wine bottle remains unchanged, the fruit wine bottle can rotate. Simultaneously, the self-rotating labeling roller drives the fruit wine bottle to rotate, and while the fruit wine bottle rotates, the label is pressed and adhered to the surface of the fruit wine bottle.

[0004] The aforementioned patent specification mentions that "the spacing between the sliding frames is changed according to the size of the wine bottle to be clamped, and the wine bottle is clamped using a rotatable and elastic clamping roller, thus ensuring that the wine bottle remains in a constant horizontal position while allowing it to rotate; at the same time, a self-rotating labeling roller is used to drive the wine bottle to rotate, and the label is pressed and affixed to the surface of the wine bottle while it is rotating." The above content can use a self-rotating labeling roller to drive the wine bottle to rotate, and press and affix the label to the surface of the wine bottle while it is rotating. Although the existing technology has achieved basic label positioning function, in practical applications, the problem of insufficient label conveying accuracy is particularly prominent, causing the conveying mechanism to malfunction, thereby affecting the overall labeling qualification rate and production efficiency. Utility Model Content

[0005] The purpose of this application is to provide a label positioning device for a labeling machine, which aims to improve the problem of insufficient label conveying accuracy in some devices.

[0006] The label positioning device for a labeling machine provided in this application adopts the following technical solution:

[0007] A label positioning device for a labeling machine includes a support frame, an intermittent fixing mechanism externally disposed on the support frame, a fixed roller rotatably connected to the external of the intermittent fixing mechanism, a rotating roller rotatably connected to the top of the support frame, a photoelectric sensor fixedly connected to the external of the support frame, and an intermittent drying mechanism externally disposed on the support frame. The intermittent fixing mechanism includes a support block externally fixedly connected to the external of the support frame, a motor fixedly connected internally to the support block, a rotating shaft fixedly connected to the drive end of the motor, a transmission plate fixedly connected externally to the rotating shaft, a rotating roller rotatably connected externally to the transmission plate, a push plate rotatably connected externally to the rotating roller, and a limit buffer mechanism externally disposed on the push plate.

[0008] Through the above technical solution: During operation, the support frame serves as the basic load-bearing component, providing stable support for each mechanism. The motor drives the rotating shaft to rotate within the support block, which in turn drives the transmission plate to rotate, causing the rotating roller to push the push plate in reciprocating linear motion. The push plate is rotatably connected to the fixed roller, realizing the intermittent rotation of the fixed roller and controlling the label step-by-step conveying. The limit buffer mechanism effectively buffers the inertia of the push plate's motion, ensuring conveying stability. The labels are guided and conveyed by the rotating roller, and the electro-optical sensor detects the label position in real time. The intermittent drying mechanism performs periodic drying treatment on the labeled products, improving the label adhesion.

[0009] Preferably, the intermittent drying mechanism includes a rotary motor, the rotary motor is fixedly connected to the outside of the support frame, the drive end of the rotary motor is fixedly connected to a rotating disk, a rotating plate is rotatably connected to the outside of the support frame, and the external teeth of the rotating plate are engaged with the external teeth of the rotating disk.

[0010] By adopting the above technical solution, during operation, the rotating motor is fixed outside the support frame, and its drive end drives the rotating disk to rotate. The rotating disk engages with the rotating plate through external teeth, causing the rotating plate to oscillate periodically outside the support frame. This oscillation achieves stable angle control through the gear meshing transmission between the rotating plate and the rotating disk, ensuring the periodicity and regularity of the drying action. This structure, through motor drive and gear meshing, converts the rotational motion of the rotating motor into the oscillation of the rotating plate, providing power transmission for the intermittent drying function, ensuring stable operation and precise control of the drying process, and improving label drying effect and labeling quality.

[0011] Preferably, the support frame is provided with a conveyor belt inside, a label roll placement shaft is fixedly connected to the top of the support frame, a tension rotating shaft is fixedly connected to the top of the support frame, a labeling plate is rotatably connected to the top of the support frame, the rotating shaft is rotatably connected to the inside of the support block, and the push plate is slidably connected to the outside of the support frame.

[0012] By adopting the above technical solution, during operation, the product to be labeled is placed on the conveyor belt inside the support frame and transported at a uniform speed to the labeling station. Label rolls are mounted on a label roll placement shaft, and the labels are exported via a tension shaft. The tension shaft adjusts the label tape tension in real time to ensure smooth label transport. A rotating shaft inside the support block rotates under motor drive, causing the transmission components to make the push plate reciprocate linearly outside the support frame, thereby driving the fixed roller to achieve intermittent label transport. When the product reaches the designated position, the labeling plate at the top of the support frame rotates, precisely affixing the label to the product surface.

[0013] Preferably, the limiting buffer mechanism includes a sliding plate, the outer side of which is fixedly connected to the outside of the push plate, and the outer side of which is slidably connected to the inside of the support block;

[0014] By adopting the above technical solution, during operation, when the push plate reciprocates linearly under the action of the transmission components, the sliding plate fixedly connected to it moves synchronously and slides in the slide rail inside the support block. When the push plate starts, stops, or is subjected to external impact, the sliding plate can buffer displacement within the support block, absorbing the impact force generated by motion inertia through its own sliding, thus preventing the push plate from shifting position or being mechanically damaged due to rigid collision. The cooperation between the sliding plate, push plate, and support block in the limiting and buffering mechanism effectively improves the stability of the push plate during movement, ensures the accuracy of the intermittent rotation of the fixed roller, and thus ensures the accuracy and reliability of the label conveying distance.

[0015] Preferably, a protruding shaft is fixedly connected to the top of the sliding plate, a protruding shaft is fixedly connected to the outside of the support block, and a buffer spring is sleeved between the two protruding shafts;

[0016] By adopting the above technical solution, when the push plate drives the sliding plate to slide within the support block, the protruding shaft at the top of the sliding plate and the protruding shaft outside the support block move accordingly. At the moment the push plate starts accelerating, decelerates, stops, or encounters an external impact, the buffer spring between the two protruding shafts is compressed or stretched, absorbing and buffering the impact force through elastic deformation, thus preventing a rigid collision between the sliding plate and the support block. In this structure, the buffer spring utilizes the conversion of elastic potential energy, working in conjunction with the sliding plate and the protruding shaft, to effectively reduce the influence of the push plate's motion inertia, enhance the smoothness of the intermittent fixing mechanism's operation, and ensure the accuracy of the label conveying distance and the durability of the equipment.

[0017] Preferably, the rotating plate is provided with a sliding groove on its exterior, a sliding block is slidably connected inside the rotating plate, a transmission connecting rod is rotatably connected outside the sliding block, and a fixing block is slidably connected outside the transmission connecting rod.

[0018] By adopting the above technical solution, during operation, the rotating plate oscillates periodically under the drive of the rotating disk. Its external groove drives the sliding block to slide back and forth inside the rotating plate. The sliding block transmits the motion to the fixed block through the rotating transmission rod. Since the transmission rod is slidably connected to the fixed block, the fixed block forms a motion constraint on the transmission rod, transforming the linear sliding of the sliding block into the oscillating drive of the transmission rod.

[0019] Preferably, a limit rod is fixedly connected to the outside of the transmission link, and the fixing block is fixedly connected to the outside of the support frame;

[0020] By adopting the above technical solution, during operation, the transmission link moves under the drive of the sliding block. Due to the dual constraints of the limiting rod fixedly connected to the outside of the transmission link and the fixed block fixed outside the support frame, the movement trajectory of the transmission link is precisely limited. The limiting rod is restricted by the fixed block during the movement, preventing the transmission link from deviating or shaking, and ensuring that it slides and swings along the predetermined path.

[0021] Preferably, a support plate is fixedly connected to the outside of the support frame, and two drying fans are fixedly connected to the outside of the support plate;

[0022] By adopting the above technical solution, during operation, the support frame serves as the basic support structure, providing stable load-bearing for the entire device. The support plate fixed to the outside of the support frame plays an auxiliary support role. Two drying fans fixedly connected to the support plate, driven by the intermittent drying mechanism, periodically dry the labeled products with hot air. The support plate provides a stable installation platform for the drying fans, ensuring that the fans remain in a fixed position during oscillating operation and avoiding the drying effect being affected by shaking.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Through the ingenious combination of motor drive and mechanical transmission, the circular motion of the rotating shaft is transformed into the linear reciprocating motion of the push plate, thereby realizing the intermittent rotation of the fixed roller, precisely controlling the step-by-step delivery of labels, ensuring consistent label spacing, and improving labeling accuracy. At the same time, the design of the sliding plate and buffer spring in the limit buffer mechanism effectively buffers the motion inertia and external impact, enhances the stability of the push plate, reduces mechanical wear, ensures accurate and reliable label delivery distance, and ensures efficient and stable operation of the labeling process.

[0025] 2. By driving the rotating disk with the meshing teeth of the rotating plate through the rotating motor, the rotational motion is converted into periodic oscillation. Then, through the linkage of the slide groove, sliding block and transmission link, the drying fan can achieve intermittent oscillation, expand the hot air coverage area, and avoid local overheating or uneven drying. The fan oscillation frequency and angle are precisely controlled by mechanical transmission. With the directional blowing of hot air, the label adhesive is accelerated to dry while reducing energy consumption and equipment wear. It is suitable for the drying needs of products of different specifications, ensures that the labels are firmly attached, and improves packaging quality and production efficiency. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a label positioning device for a labeling machine proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the tension shaft of a label positioning device for a labeling machine proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the structure of a support block for a label positioning device of a labeling machine proposed in this utility model;

[0030] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0031] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Intermittent fixing mechanism; 21. Support block; 22. Rotating shaft; 23. Transmission plate; 24. Limiting and buffering mechanism; 241. Sliding plate; 242. Buffer spring; 25. Rotating roller; 26. Pushing plate; 3. Fixed roller; 4. Rotating roller; 5. Electro-optical sensor; 6. Labeling plate; 7. Label roll placement shaft; 8. Tension rotating shaft; 9. Intermittent drying mechanism; 91. Rotating motor; 92. Rotating disk; 93. Rotating plate; 94. Sliding block; 95. Transmission connecting rod; 96. Fixed block; 97. Limiting rod; 98. Drying fan; 99. Support plate; 10. Conveyor belt. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0033] Example: A label positioning device for a labeling machine, referring to... Figures 1 to 3The system includes a support frame 1, which ensures the stable operation of each mechanism. An intermittent fixing mechanism 2 is installed on the outside of the support frame 1. The intermittent fixing mechanism 2 is used to realize the intermittent conveying of labels, accurately control the label conveying distance, and ensure consistent label spacing. A fixed roller 3 is rotatably connected to the outside of the intermittent fixing mechanism 2. The fixed roller 3 rotates intermittently under the drive of the intermittent fixing mechanism 2 to release the labels, thus completing the step-by-step conveying of the labels. A rotating roller 4 is rotatably connected to the top of the support frame 1. An electro-optic sensor 5 is fixedly connected to the outside of the support frame 1. The electro-optic sensor 5 detects the label position in real time and provides a positioning signal to the control system by sensing the label edge or color mark to ensure label positioning. An intermittent drying mechanism 9 is installed on the outside of the support frame 1. The intermittent drying mechanism 9 performs periodic drying treatment on the labeled products to accelerate the drying of the label adhesive and improve the label adhesion.

[0034] The support frame 1 is equipped with a conveyor belt 10, which carries and transports the products to be labeled, allowing them to pass through the labeling station along a fixed route and speed, ensuring accurate timing of the product and label application. The top of the support frame 1 is fixedly connected to a label roll placement shaft 7, which is used to install label rolls, provide a label storage location, and facilitate continuous label supply. The top of the support frame 1 is also fixedly connected to a tension shaft 8, which is used to automatically adjust the tension of the label tape to prevent the labels from becoming loose or tight during transport, ensuring smooth label transport. The top of the support frame 1 is rotatably connected to a labeling plate 6, which, under the command of the control system, accurately applies the peeled label to the product surface to complete the labeling action. The external rotating shaft 22 is rotatably connected to the inside of the support block 21, and the external sliding push plate 26 is slidably connected to the outside of the support frame 1.

[0035] The intermittent fixing mechanism 2 includes a support block 21, which provides mounting support for components such as the rotating shaft 22 and the motor, fixes their positions, and ensures transmission stability. The support block 21 is externally fixedly connected to the outside of the support frame 1, and the motor is internally fixedly connected to the support block 21. The drive end of the motor is fixedly connected to the rotating shaft 22, and the external of the rotating shaft 22 is fixedly connected to a transmission plate 23. The transmission plate 23 is used to transmit the rotational motion of the rotating shaft 22 to the rotating roller 25, realizing the conversion and transmission of motion form. The external of the transmission plate 23 is rotatably connected to the rotating roller 25, which contacts the push plate 26 and rolls under the drive of the transmission plate 23, converting the circular motion into the linear motion of the push plate 26. The external of the rotating roller 25 is rotatably connected to the push plate 26, which is externally rotatably connected to the inside of the fixed roller 3. A limit buffer mechanism 24 is provided on the external of the push plate 26.

[0036] The limiting buffer mechanism 24 includes a sliding plate 241, which is fixedly connected to the push plate 26 and slides within the support block 21 to guide the movement of the push plate 26 and participate in the buffering process. The outer side of the sliding plate 241 is fixedly connected to the outside of the push plate 26, and the outer side of the sliding plate 241 is slidably connected to the inside of the support block 21. A protruding shaft is fixedly connected to the top of the sliding plate 241, and a protruding shaft is fixedly connected to the outside of the support block 21. A buffer spring 242 is sleeved between the two protruding shafts. When the push plate 26 moves, the buffer spring 242 is used to absorb the motion inertia and external force impact by compressing or stretching the buffer spring 242, to prevent the push plate 26 from moving excessively, to ensure accurate label conveying distance, and to reduce mechanical wear.

[0037] Specifically, the label positioning device of the labeling machine is based on a metal support frame 1, which supports all core mechanisms. During operation, the motor drives the rotating shaft 22 to rotate, and the transmission plate 23 drives the rotating roller 25 to convert the circular motion into the linear reciprocating motion of the push plate 26, which in turn drives the fixed roller 3 to achieve intermittent label conveying. In the limiting and buffering mechanism 24, the sliding plate 241 slides within the support block 21, and the buffer spring 242 absorbs the impact of the motion to ensure the label conveying accuracy. After the label is adjusted by the tension shaft 8, it is guided by the rotating roller 4. The electro-optical sensor 5 detects the label position in real time, and the conveyor belt 10 synchronously conveys the product to the labeling station. The labeling plate 6 completes the label application action. The selection of metal and wear-resistant materials ensures the durability and stability of the device.

[0038] Reference Figure 2 , Figure 4 and Figure 5 The intermittent drying mechanism 9 includes a rotary motor 91, which drives the rotating disk 92 to rotate, providing power for the oscillation of the drying fan 98. The rotary motor 91 is externally fixedly connected to the outside of the support frame 1. The drive end of the rotary motor 91 is fixedly connected to the rotating disk 92. The rotating disk 92 is used to convert the rotational motion of the rotary motor 91 into the periodic oscillation of the rotating plate 93 by engaging with the teeth of the rotating plate 93. The rotating plate 93 is rotatably connected to the outside of the support frame 1. The rotating plate 93 oscillates periodically under the drive of the rotating disk 92. The oscillation motion is further transmitted through the cooperation of the sliding groove and the sliding block 94. The external teeth of the rotating plate 93 are engaged with the external teeth of the rotating disk 92.

[0039] The rotating plate 93 has a groove on its exterior, and a sliding block 94 is slidably connected inside the rotating plate 93. The sliding block 94 slides within the groove of the rotating plate 93, converting the oscillation of the rotating plate 93 into its own linear sliding, and transmitting the motion through the transmission link 95. The transmission link 95 is rotatably connected to the exterior of the sliding block 94, connecting the sliding block 94 and the fixed block 96. Under the constraint of both, the linear motion of the sliding block 94 is converted into oscillation, driving the drying fan 98 to oscillate. The transmission link 95 connects the sliding block 94 and the fixed block 96, which is fixed to the support frame 1, constraining the motion trajectory of the transmission link 95 to ensure that the transmission link 95 moves along a predetermined path, thus ensuring the stability and accuracy of the oscillation of the drying fan 98. Under the constraints of both, the linear motion of the sliding block 94 is converted into oscillation, driving the drying fan 98 to oscillate. A fixed block 96 is slidably connected to the outside of the transmission link 95. The fixed block 96 is used to fix it on the support frame 1 to constrain the movement trajectory of the transmission link 95, ensuring that the transmission link 95 moves along a predetermined path and ensuring the stability and accuracy of the oscillation of the drying fan 98. A limit rod 97 is fixedly connected to the outside of the transmission link 95. The limit rod 97 is used to further limit the movement range of the transmission link 95 to prevent it from deviating or shaking, and improve the reliability of the drying mechanism. The fixed block 96 is fixedly connected to the outside of the support frame 1. A support plate 99 is fixedly connected to the outside of the support frame 1. Two drying fans 98 are fixedly connected to the outside of the support plate 99.

[0040] Specifically, the intermittent drying mechanism 9 uses a metal support frame 1 as its mounting base and is powered by a rotary motor 91, which drives the rotating disk 92 to rotate. The rotating disk 92 and the rotating plate 93 engage with a locking gear, converting the rotational motion into the periodic oscillation of the rotating plate 93. The sliding groove on the rotating plate 93 cooperates with the sliding block 94, allowing the sliding block 94 to slide linearly within the groove. The motion is transmitted to the fixed block 96 via the transmission link 95. The fixed block 96 constrains the movement trajectory of the transmission link 95, and, together with the limit rod 97, further limits the oscillation range of the transmission link 95 to prevent it from deviating. Finally, the transmission link 95 drives the drying fan 98 to oscillate intermittently, periodically drying the labeled product with hot air.

[0041] The implementation principle of this application embodiment is as follows: by placing the label roll on the label roll placement shaft 7, the label passes around the tension rotating shaft 8, the tension rotating shaft 8 is automatically adjusted according to the tightness of the label roll, the conveyor belt 10 inside the support frame 1 starts to run at a uniform speed to prepare for product transportation, and the conveyor belt 10 transports the products to the labeling station in sequence.

[0042] The motor inside the support block 21 drives the rotating shaft 22 to rotate, which in turn drives the transmission plate 23 to rotate synchronously. The rotating roller 25 on the transmission plate 23 moves in a circular motion with the transmission plate 23. During the movement, the rotating roller 25 contacts the push plate 26 and applies a pushing force, causing the push plate 26 to slide back and forth linearly outside the support frame 1. The push plate 26 is rotatably connected to the fixed roller 3, and the linear motion of the push plate 26 is converted into the intermittent rotation of the fixed roller 3. When the push plate 26 pushes forward, the fixed roller 3 rotates at a certain angle and releases a label. When the push plate 26 returns to its original position, the fixed roller 3 stops rotating, pausing the label conveying, thus realizing the step-by-step intermittent conveying of the labels and ensuring the movement stability of the push plate 26. The sliding plate 241 is fixed on the push plate 26 and can slide within the support block 21. The buffer spring 242 between the two protruding shafts plays a buffering and limiting role when the push plate 26 moves, preventing the push plate 26 from moving excessively due to inertia or external impact, and ensuring the label conveying distance.

[0043] The label is conveyed forward by the fixed roller 3 and passes through the electro-optic sensor 5 outside the support frame 1. The electro-optic sensor 5 detects the edge or color mark position of the label in real time. When a specific mark on the label is detected, an electrical signal is immediately generated and transmitted to the control system of the labeling machine. After receiving the signal from the electro-optic sensor 5, the control system calculates the deviation between the current label position and the ideal position according to the preset label positioning parameters. If there is a deviation, the control system will adjust the rotation angle of the subsequent fixed roller 3 or the timing of the action of the labeling plate 6 to ensure that the label is accurately positioned when it is labeled.

[0044] The rotating motor 91 starts working, driving the rotating disk 92 to rotate. The rotating disk 92 and the rotating plate 93 are engaged by a locking tooth, causing the rotating plate 93 to periodically oscillate outside the support frame 1. The sliding groove on the rotating plate 93 cooperates with the sliding block 94. When the rotating plate 93 oscillates, the sliding block 94 slides in the sliding groove and drives the limiting rod 97 to move through the transmission link 95. The transmission link 95 is slidably connected to the fixed block 96. Under the constraint of the limiting rod 97 and the fixed block 96, the transmission link 95 converts the movement of the sliding block 94 into the oscillation of the drying fan 98. The two drying fans 98 on the support plate 99, driven by the transmission link 95, oscillate intermittently, blowing hot air onto the label attached to the product.

[0045] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A label positioning device for a labeling machine, comprising a support frame (1), characterized in that, An intermittent fixing mechanism (2) is provided on the outside of the support frame (1), a fixed roller (3) is rotatably connected to the outside of the intermittent fixing mechanism (2), a rotating roller (4) is rotatably connected to the top of the support frame (1), an electro-optic sensor (5) is fixedly connected to the outside of the support frame (1), and an intermittent drying mechanism (9) is provided on the outside of the support frame (1). The intermittent fixing mechanism (2) includes a support block (21), which is fixedly connected to the outside of the support frame (1). A motor is fixedly connected inside the support block (21), and a rotating shaft (22) is fixedly connected to the drive end of the motor. A transmission plate (23) is fixedly connected to the outside of the rotating shaft (22). A rotating roller (25) is rotatably connected to the outside of the transmission plate (23). A push plate (26) is rotatably connected to the outside of the rotating roller (25). The push plate (26) is rotatably connected to the inside of the fixed roller (3). A limit buffer mechanism (24) is provided on the outside of the push plate (26).

2. The label positioning device for a labeling machine according to claim 1, characterized in that, The intermittent drying mechanism (9) includes a rotating motor (91), which is fixedly connected to the outside of the support frame (1). The drive end of the rotating motor (91) is fixedly connected to a rotating disk (92). A rotating plate (93) is rotatably connected to the outside of the support frame (1). The external teeth of the rotating plate (93) mesh with the external teeth of the rotating disk (92).

3. The label positioning device for a labeling machine according to claim 1, characterized in that, The support frame (1) is equipped with a conveyor belt (10) inside. The top of the support frame (1) is fixedly connected to a label roll placement shaft (7). The top of the support frame (1) is fixedly connected to a tension rotating shaft (8). The top of the support frame (1) is rotatably connected to a labeling plate (6). The outside of the rotating shaft (22) is rotatably connected to the inside of the support block (21). The outside of the push plate (26) is slidably connected to the outside of the support frame (1).

4. The label positioning device for a labeling machine according to claim 3, characterized in that, The limiting buffer mechanism (24) includes a sliding plate (241), the outside of which is fixedly connected to the outside of the push plate (26), and the outside of which is slidably connected to the inside of the support block (21).

5. A label positioning device for a labeling machine according to claim 4, characterized in that, The top of the sliding plate (241) is fixedly connected to a protruding shaft, the outside of the support block (21) is fixedly connected to a protruding shaft, and a buffer spring (242) is sleeved between the two protruding shafts.

6. A label positioning device for a labeling machine according to claim 2, characterized in that, The rotating plate (93) is provided with a sliding groove on the outside, and a sliding block (94) is slidably connected inside the rotating plate (93). A transmission link (95) is rotatably connected outside the sliding block (94), and a fixed block (96) is slidably connected outside the transmission link (95).

7. A label positioning device for a labeling machine according to claim 6, characterized in that, The transmission link (95) is externally fixedly connected to a limit rod (97), and the fixing block (96) is externally fixedly connected to the outside of the support frame (1).

8. A label positioning device for a labeling machine according to claim 7, characterized in that, The support frame (1) is externally fixedly connected to a support plate (99), and the support plate (99) is externally fixedly connected to two drying fans (98).

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