Positioning adjusting mechanism and labeling machine

Abstract

This utility model belongs to the field of tobacco processing technology and discloses a positioning adjustment mechanism and a labeling machine. The positioning adjustment mechanism includes a base assembly, a first connecting arm, a second connecting arm, and fasteners. The base assembly can be installed on the first side of a conveying device. The first and second connecting arms are rotatably connected and angled together. The first connecting arm is rotatably connected to the base assembly, and the connection positions of the first connecting arm with the base assembly and with the second connecting arm are spaced apart. The second connecting arm is movably connected to the base assembly and is used to adjust the distance between the first connecting arm and the second side of the conveying device. The fasteners are used to lock the second connecting arm to the base assembly. This positioning adjustment mechanism is used to achieve precise adjustment of the position of the workpiece on the conveying device, enabling the labeling device to accurately affix labels to the corresponding positions on the workpiece, improving the labeling accuracy of the workpiece and thus increasing outbound efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tobacco processing technology, and in particular to a positioning adjustment mechanism and a labeling machine. Background Technology

[0002] In the cigarette logistics outbound process, labeling cigarette cartons is crucial, as the label information is key to subsequent information-based operations in warehousing management, logistics distribution, and sales. Accurate labeling allows barcode reading devices to precisely scan the cigarette carton information, ensuring a highly efficient and smooth logistics outbound process.

[0003] Currently, the labeling machines used in the industry have a problem with inaccurate label placement when affixing labels to cigarette cartons. The cigarette cartons are positioned arbitrarily on the conveyor, and the labeling device cannot accurately affix the labels to the corresponding positions. This causes the cigarette cartons to be judged as unqualified and rejected, thus reducing outbound efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning adjustment mechanism and a labeling machine to achieve precise adjustment of the position of the workpiece on the conveying device, so that the labeling device can accurately attach the label to the corresponding position of the workpiece, improve the labeling accuracy of the workpiece, and thus improve the outbound efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A positioning adjustment mechanism is provided for adjusting the position of a workpiece on a conveying device having a first side and a second side. The positioning adjustment mechanism includes a base assembly, a first connecting arm, a second connecting arm, and a fastener. The base assembly is mountable on the first side of the conveying device. The first connecting arm is rotatably connected to the second connecting arm and is angled together. The first connecting arm is rotatably connected to the base assembly, and the connection positions of the first connecting arm with the base assembly and with the second connecting arm are spaced apart. The second connecting arm is movably connected to the base assembly and is configured to adjust the distance between the first connecting arm and the second side of the conveying device. The fastener is used to lock the second connecting arm to the base assembly.

[0007] As an alternative to the positioning and adjustment mechanism, the base assembly includes a first connecting seat, one of which and the first connecting arm are provided with a first rotating shaft in the vertical direction, and the other of which is provided with a first bushing in the vertical direction. The outer side wall of the first rotating shaft is clearance-fitted with the inner side wall of the first bushing and can rotate relative to it.

[0008] As an optional solution for the positioning and adjustment mechanism, the base assembly further includes a second connecting seat, which includes a second rotating shaft, a second bushing, and a connecting member. The inner sidewall of one end of the second bushing and the outer sidewall of the second rotating shaft are clearance-fitted and can rotate relative to each other. The other end of the second bushing is connected to the connecting member. The connecting member has a through hole in the horizontal direction. The second connecting arm passes through the through hole and is slidably connected to the connecting member.

[0009] As an alternative to the positioning and adjustment mechanism, the connector is provided with a threaded hole communicating with the through hole, and the fastener is threadedly connected to the threaded hole to lock the second connecting arm to the wall of the through hole.

[0010] As an alternative to the positioning adjustment mechanism, the positioning adjustment mechanism also includes a handle connected to the fastener, the handle being used to tighten the fastener.

[0011] As an alternative to the positioning adjustment mechanism, the positioning adjustment mechanism further includes a driving member, the output end of which is connected to the end of the second connecting arm away from the first connecting arm, and the driving member is used to drive the second connecting arm to move along the axial direction of the through hole.

[0012] As an alternative to the positioning adjustment mechanism, the first connecting arm includes a guide portion whose distance from the second side of the conveying device gradually decreases along the conveying direction.

[0013] As an alternative to the positioning and adjustment mechanism, the outer wall of the guide is covered with a buffer layer that can abut against the workpiece.

[0014] As an alternative to the positioning adjustment mechanism, the base assembly is detachably connected to the conveying device.

[0015] A labeling machine includes a conveying device, an applicator, and a positioning adjustment mechanism. The positioning adjustment mechanism is disposed on a first side of the conveying device, and the applicator is disposed on a second side of the conveying device. The positioning adjustment mechanism is configured to cause the workpiece to be processed to abut against the side wall of the second side of the conveying device, and the applicator applies a label to the workpiece.

[0016] Beneficial effects:

[0017] This invention provides a positioning adjustment mechanism and a labeling machine. In this positioning adjustment mechanism, a first connecting arm and a second connecting arm are rotatably connected and angled together. The end of the first connecting arm furthest from the second connecting arm is rotatably connected to a base assembly, while the second connecting arm is movably connected to the base assembly. This allows for highly flexible adjustment of the distance between the first connecting arm and the second side of the conveying device, enabling precise adjustment of the first connecting arm's position according to the different sizes and positional requirements of the workpiece. Furthermore, fasteners can lock the second connecting arm to the base assembly, preventing its position from changing due to vibration or other factors during conveying, thus ensuring the stability of the first connecting arm's position. This design is both flexible and stable, accurately adjusting the position of the workpiece on the conveying device, enhancing conveying stability, and offering strong versatility, adapting to workpieces of different specifications. Using this mechanism can reduce the rejection of workpieces due to inaccurate labeling, significantly improving the accuracy and efficiency of labeling in cigarette logistics outbound processes, reducing manual processing and logistics costs, and ensuring a highly efficient and smooth outbound process. Attached Figure Description

[0018] Figure 1 This is a first schematic diagram of the positioning adjustment mechanism provided in this embodiment of the utility model;

[0019] Figure 2 This is a second schematic diagram of the positioning adjustment mechanism provided in this embodiment of the utility model;

[0020] Figure 3 This is a first partial structural schematic diagram of the positioning and adjustment mechanism provided in this embodiment of the present utility model;

[0021] Figure 4 This is a second schematic diagram of a partial structure of the positioning and adjustment mechanism provided in this embodiment of the present utility model.

[0022] In the picture:

[0023] 100. Conveying device; 101. First side; 102. Second side;

[0024] 200. Parts to be processed;

[0025] 1. Base assembly; 11. First connecting seat; 111. First bushing; 112. First mounting plate; 12. Second connecting seat; 121. Second rotating shaft; 122. Second bushing; 123. Connecting piece; 124. Second mounting plate; 1231. Through hole; 1232. Threaded hole;

[0026] 2. First connecting arm; 21. First rotating shaft; 22. Guide section;

[0027] 3. Second connecting arm;

[0028] 4. Fasteners;

[0029] 5. Handle. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] This embodiment provides a labeling machine, which includes a conveying device 100, an application device (not shown in the figure), and a positioning adjustment mechanism. The positioning adjustment mechanism is disposed on the first side 101 of the conveying device 100, and the application device is disposed on the second side 102 of the conveying device 100. The positioning adjustment mechanism is configured to cause the workpiece 200 to abut against the side wall of the second side 102 of the conveying device 100, and the application device applies a label (affixes a label for identifying product information) to the workpiece 200. The positioning and adjustment mechanism ensures that the workpiece 200 is precisely positioned against the side wall of the second side 102 of the conveying device 100, thereby improving the labeling accuracy and quality. The conveying device 100 can continuously convey the workpiece 200. With the cooperation of the positioning and adjustment mechanism and the application device, rapid labeling is achieved to improve work efficiency. This layout of positioning and adjustment on one side and application on the other side makes the labeling machine compact, with reasonable use of space for each component, facilitating equipment installation, debugging and maintenance. In the entire labeling process, the conveying device 100, the application device and the positioning and adjustment mechanism work together to make the labeling machine highly practical and efficient.

[0035] Specifically, the workpiece 200 is a cigarette box containing a certain number of packs of cigarettes. Each cigarette box has a labeling frame at a specific location; only when the label is accurately affixed to the labeling frame can the product information of the cigarette box be accurately identified. It should be noted that the workpiece 200 is not limited to cigarette boxes; products that also need to be positioned on the conveyor device 100, such as express delivery boxes and electronic product packaging boxes, can also utilize the positioning adjustment mechanism in this embodiment.

[0036] In this embodiment, a position positioning plate (not shown in the figure) is provided on the side wall of the second side 102 of the conveying device 100. When the workpiece 200 is conveyed on the conveying device 100 to the position corresponding to the application position of the application device, the position positioning plate functions to stop the workpiece 200 at this position for subsequent labeling operations. First, the positioning adjustment mechanism makes the workpiece 200 adhere tightly to the side wall of the second side 102 of the conveying device 100. Then, the workpiece 200 continues to move along the conveying direction. When it reaches the application position, the position positioning plate abuts against the workpiece 200, preventing the workpiece 200 from continuing to move along the conveying direction. The application device applies a label to the paused workpiece 200. After the label is applied, the operator removes the labeled workpiece 200.

[0037] In this embodiment, the conveying device 100 also includes multiple rollers (not shown in the figure). These rollers are spaced apart along the conveying direction on the sidewall of the second side 102 of the conveying device 100, and can abut against the workpiece 200. The rollers convert the sliding friction between the workpiece 200 and the sidewall into rolling friction. Due to the low coefficient of rolling friction, frictional resistance is significantly reduced, allowing the workpiece 200 to be conveyed more smoothly and quickly, thus improving conveying efficiency. Furthermore, the spaced rollers form a continuous support and guiding structure, providing stable support and guiding force for the workpiece 200. The auxiliary positioning and adjustment mechanism enables the workpiece 200 to move precisely along a predetermined path, enhancing conveying stability and improving labeling accuracy.

[0038] Furthermore, the distance between two adjacent rollers is less than the length of the shortest side of the workpiece 200. This ensures that the workpiece 200 is supported by at least two rollers during transport, avoiding local suspension that could cause tilting or swaying, thus ensuring the stability of the workpiece 200 during transport and facilitating accurate labeling by the subsequent application device.

[0039] It is worth noting that the application device in this embodiment adopts existing technology, and its specific structure will not be described in detail here.

[0040] like Figures 1-4 As shown, the positioning adjustment mechanism is used to adjust the position of the workpiece 200 on the conveying device 100. The positioning adjustment mechanism includes a base assembly 1, a first connecting arm 2, a second connecting arm 3, and a fastener 4. The base assembly 1 can be installed on the first side 101 of the conveying device 100. The first connecting arm 2 and the second connecting arm 3 are rotatably connected and set at an angle. The first connecting arm 2 is rotatably connected to the base assembly 1, and the connection positions of the first connecting arm 2 with the base assembly 1 and with the second connecting arm 3 are spaced apart. The second connecting arm 3 is movably connected to the base assembly 1 and is configured to adjust the distance between the first connecting arm 2 and the second side 102 of the conveying device 100. The fastener 4 is used to lock the second connecting arm 3 to the base assembly 1. This positioning adjustment mechanism is flexible and stable, can accurately position the workpiece 200, enhances conveying stability, has good versatility, and is adaptable to workpieces 200 of different specifications. Applying this positioning adjustment mechanism can reduce the rejection of workpieces 200 caused by inaccurate labeling, and significantly improve labeling accuracy and efficiency.

[0041] In this embodiment, as Figures 1-3As shown, the base assembly 1 includes a first connecting seat 11, a first bushing 111 in the vertical direction, and a first rotating shaft 21 in the vertical direction. The outer wall of the first rotating shaft 21 and the inner wall of the first bushing 111 are in clearance fit and can rotate relative to each other. Through the rotational fit between the first rotating shaft 21 and the first bushing 111, the angle of the first connecting arm 2 can be flexibly adjusted, and stable rotational support can be provided for the first connecting arm 2, making the first connecting arm 2 more stable during rotation, avoiding wobbling and deviation, and helping the positioning and adjustment mechanism to accurately position the workpiece. At the same time, this clearance fit method is simple, facilitates equipment assembly, and can effectively improve assembly efficiency. In other embodiments, the first connecting seat 11 is provided with a first rotating shaft 21 in the vertical direction, and the first connecting arm 2 is provided with a first bushing 111 in the vertical direction. The outer wall of the first rotating shaft 21 and the inner wall of the first bushing 111 are in clearance fit and can rotate relative to each other.

[0042] Specifically, such as Figure 3 As shown, the first connecting seat 11 also includes a first mounting plate 112. The first mounting plate 112 is connected to the side wall of the first side 101 of the conveying device 100, and the side of the first mounting plate 112 facing away from the conveying device 100 is connected to the first bushing 111. When the first rotating shaft 21 is inserted into the first bushing 111, the end face of the first bushing 111 abuts against the connection between the first connecting arm 2 and the first rotating shaft 21, thereby limiting the first connecting arm 2 in the vertical direction. In other embodiments, the length of the first rotating shaft 21 is equal to the length of the first bushing 111, and the end face of the first rotating shaft 21 abuts against the first mounting plate 112, which can also limit the first connecting arm 2 in the vertical direction.

[0043] In this embodiment, as Figure 1 , Figure 2 and Figure 4As shown, the base assembly 1 also includes a second connecting seat 12, which includes a second rotating shaft 121, a second bushing 122, and a connecting member 123. The inner sidewall of one end of the second bushing 122 is clearance-fitted with the outer sidewall of the second rotating shaft 121 and can move relative to it. The other end of the second bushing 122 is connected to the connecting member 123. The connecting member 123 has a through hole 1231 in the horizontal direction, and the second connecting arm 3 passes through the through hole 1231 and is slidably connected to the connecting member 123. The vertical insertion of the second bushing 122 and the second rotating shaft 121 ensures the stability of the connection and provides reliable support for the movement of the second connecting arm 3. At the same time, this clearance-fit connection method allows the second bushing 122 and the connecting member 123 to rotate relative to the second rotating shaft 121, increasing the structural flexibility. The second connecting arm 3 passes through the horizontal through hole 1231 of the connecting member 123 and is slidably connected. This allows the second connecting arm 3 to freely adjust its position in the horizontal direction, thereby flexibly changing the distance between the first connecting arm 2 and the second side 102 of the conveying device 100. This adapts to the positioning requirements of workpieces 200 of different sizes, improving the versatility and flexibility of the positioning adjustment mechanism. Furthermore, the entire structure is compact and reasonable, with each component achieving optimal layout within a limited space, improving the stability and space utilization of the positioning adjustment mechanism.

[0044] Specifically, the second connecting seat 12 also includes a second mounting plate 124. Along the conveying direction, the second mounting plate 124 and the first mounting plate 112 are spaced apart. The second mounting plate 124 is connected to the side wall of the first side 101 of the conveying device 100. The side of the second mounting plate 124 facing away from the conveying device 100 is connected to the second rotating shaft 121. One end of the second bushing 122 is inserted into the second rotating shaft 121 and abuts against the second mounting plate 124. The other end of the second bushing 122 is welded and fixed to the connecting member 123. Thus, the second connecting seat 12 is securely mounted on the conveying device 100, enhancing the stability of the positioning and adjustment mechanism, limiting the vertical displacement of the second bushing 122, bearing the force of the second connecting arm 3, and ensuring structural reliability. The welding method ensures a stable connection between the connecting member 123 and the second bushing 122, facilitating precise adjustment of the distance between the first connecting arm 2 and the second side 102 of the conveying device 100. During operation, the operator can flexibly slide the second connecting arm 3 to accurately position different workpieces 200, reducing labeling errors and improving labeling quality and efficiency. In addition, the spaced layout of the first mounting plate 112 and the second mounting plate 124 makes the base assembly 1 reasonably distributed, optimizes the labeling machine structure, facilitates installation, debugging and maintenance, and ensures long-term stable operation.

[0045] like Figure 4As shown, the connector 123 has a threaded hole 1232 communicating with the through hole 1231. The fastener 4 is threadedly connected to the threaded hole 1232 to lock the second connecting arm 3 into the hole wall of the through hole 1231. The operator can first slide the second connecting arm 3 to adjust the spacing, and then tighten the fastener 4 to fix the second connecting arm 3 in place, ensuring labeling accuracy; it has operational flexibility, making it easy and quick to adapt to the positioning requirements of different sized workpieces 200, improving work efficiency; it enhances structural stability, preventing the second connecting arm 3 from displacing due to external forces during equipment operation, ensuring the reliability of the positioning adjustment mechanism. Specifically, the fastener 4 can be a bolt, screw, etc., as long as the fastener 4 has an external thread that matches the threaded hole 1232.

[0046] like Figure 1 , Figure 2 and Figure 4 As shown, the positioning and adjustment mechanism also includes a handle 5, which is connected to the fastener 4. The handle 5 is used to tighten the fastener 4. The handle 5 provides the operator with a more convenient grip and force application point. Compared to directly using tools to tighten the fastener 4, using the handle 5 makes the tightening operation easier, saving operation time and improving work efficiency.

[0047] In this embodiment, the positioning adjustment mechanism also includes a driving component (not shown in the figure). The output end of the driving component is connected to the end of the second connecting arm 3 away from the first connecting arm 2. The driving component is used to drive the second connecting arm 3 to move along the axial direction of the through hole 1231. The driving component can precisely control the moving distance and speed of the second connecting arm 3 along the axial direction of the through hole 1231. Compared with manual operation, the driving component can move precisely according to preset parameters, reducing errors caused by human factors. This makes the adjustment of the distance between the first connecting arm 2 and the second side 102 of the conveying device 100 more precise, thereby providing more accurate positioning for the workpiece 200 to be processed and improving the labeling accuracy of the labeling machine. Specifically, the driving component can be a cylinder or a hydraulic cylinder.

[0048] like Figure 1 and Figure 2 As shown, the first connecting arm 2 includes a guide portion 22, the distance between the guide portion 22 and the second side 102 of the conveying device 100 gradually decreasing along the conveying direction. When the workpiece 200 moves with the conveying device 100, the guide portion 22 can gradually guide it to the correct labeling position. Even if the workpiece 200 has an initial positional deviation during conveying, the guide portion 22, through this gradually narrowing structure, can accurately abut against the second side 102 of the conveying device 100, preparing it for subsequent labeling operations.

[0049] The outer wall of the guide portion 22 is covered with a buffer layer (not shown in the figure), which can abut against the workpiece 200. The buffer layer is relatively soft, and when the guide portion 22 abuts against the workpiece 200, it can prevent the guide portion 22 from directly contacting the workpiece 200 and scratching or abrading its surface, thus ensuring the appearance quality of the workpiece 200. Specifically, the material of the buffer layer can be rubber, silicone, polyurethane, etc., and no specific limitation is made here.

[0050] like Figures 1-4 As shown, the base assembly 1 and the conveying device 100 are detachably connected. This detachable connection facilitates maintenance and inspection, improves versatility and adaptability, and allows for flexible replacement of the positioning and adjustment mechanism according to production needs. In this embodiment, the first mounting plate 112 and the second mounting plate 124 of the base assembly 1 are both bolted to the conveying device 100. Specifically, mounting holes are provided at corresponding positions on the first mounting plate 112, the second mounting plate 124, and the conveying device 100, and bolts pass through these holes to connect the base assembly 1 and the conveying device 100. In other embodiments, the first mounting plate 112 and the second mounting plate 124 of the base assembly 1 are magnetically connected to the conveying device 100. Magnets of different strengths can be selected to meet different connection requirements as needed. In other embodiments, the first mounting plate 112 and the second mounting plate 124 of the base assembly 1 are connected to the conveying device 100 via pins. Specifically, pin holes are provided at corresponding positions on the first mounting plate 112, the second mounting plate 124, and the conveying device 100, and the connection is achieved by inserting the pin into the pin hole. To prevent the pin from loosening, a cotter pin can be installed on the pin.

[0051] The working process of the positioning adjustment mechanism in this embodiment is roughly as follows:

[0052] The operator first adjusts the distance between the first connecting arm 2 and the second side 102 of the conveying device 100 by operating the drive component or manually sliding the second connecting arm 3 according to the size specifications of the workpiece 200. After sliding the second connecting arm 3 to the appropriate position, the operator tightens the fastener 4 by turning the handle 5 to lock the second connecting arm 3 into the wall of the through hole 1231 of the connector 123, ensuring that the distance is fixed.

[0053] The workpiece 200 (such as a cigarette box) is conveyed by the conveying device 100 along the conveying direction. When the workpiece 200 is conveyed to the positioning and adjustment mechanism, the guide part 22 of the first connecting arm 2 comes into play. The guide part 22 can gradually guide the workpiece 200, which has an initial position deviation, to the accurate position, so that it is tightly against the side wall of the second side 102 of the conveying device 100.

[0054] The workpiece 200 is conveyed to the labeling device, where it abuts against the positioning plate. The labeling device then performs a labeling operation on the workpiece 200, accurately affixing the label used to identify product information to a specific location on the workpiece 200 (such as the labeling frame of a cigarette box), thus achieving accurate label application.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A positioning adjustment mechanism for adjusting the position of a workpiece (200) on a conveying device (100), the conveying device having opposing first sides (101) and second sides (102), characterized in that, The positioning adjustment mechanism includes a base assembly (1), a first connecting arm (2), a second connecting arm (3), and a fastener (4). The base assembly (1) can be installed on the first side (101) of the conveying device (100). The first connecting arm (2) and the second connecting arm (3) are rotatably connected and set at an angle. The first connecting arm (2) is rotatably connected to the base assembly (1), and the connection position of the first connecting arm (2) to the base assembly (1) and the connection position of the first connecting arm (2) to the second connecting arm (3) are spaced apart from each other. The second connecting arm (3) is movably connected to the base assembly (1). The second connecting arm (3) is configured to adjust the distance between the first connecting arm (2) and the second side (102) of the conveying device (100). The fastener (4) is used to lock the second connecting arm (3) to the base assembly (1).

2. The positioning adjustment mechanism according to claim 1, characterized in that, The base assembly (1) includes a first connecting seat (11), one of the first connecting seat (11) and the first connecting arm (2) is provided with a first rotating shaft (21) in the vertical direction, and the other of the two is provided with a first bushing (111) in the vertical direction. The outer side wall of the first rotating shaft (21) is in clearance fit with the inner side wall of the first bushing (111) and can rotate relative to each other.

3. The positioning adjustment mechanism according to claim 1, characterized in that, The base assembly (1) further includes a second connecting seat (12), which includes a second rotating shaft (121), a second bushing (122), and a connector (123). The inner sidewall of one end of the second bushing (122) and the outer sidewall of the second rotating shaft (121) are clearance-fitted and can rotate relative to each other. The other end of the second bushing (122) is connected to the connector (123). The connector (123) has a through hole (1231) in the horizontal direction. The second connecting arm (3) passes through the through hole (1231) and is slidably connected to the connector (123).

4. The positioning adjustment mechanism according to claim 3, characterized in that, The connector (123) is provided with a threaded hole (1232) that communicates with the through hole (1231), and the fastener (4) is threadedly connected to the threaded hole (1232) to lock the second connecting arm (3) to the hole wall of the through hole (1231).

5. The positioning adjustment mechanism according to claim 4, characterized in that, The positioning adjustment mechanism also includes a handle (5), which is connected to the fastener (4) and is used to tighten the fastener (4).

6. The positioning adjustment mechanism according to claim 3, characterized in that, The positioning adjustment mechanism further includes a driving member, the output end of which is connected to the end of the second connecting arm (3) away from the first connecting arm (2). The driving member is used to drive the second connecting arm (3) to move along the axial direction of the through hole (1231).

7. The positioning adjustment mechanism according to any one of claims 1-6, characterized in that, The first connecting arm (2) includes a guide (22) whose distance from the second side (102) of the conveying device (100) gradually decreases along the conveying direction.

8. The positioning adjustment mechanism according to claim 7, characterized in that, The outer wall of the guide portion (22) is covered with a buffer layer, which can abut against the workpiece (200) to be processed.

9. The positioning adjustment mechanism according to any one of claims 1-6, characterized in that, The base assembly (1) is detachably connected to the conveying device (100).

10. A labeling machine, characterized in that, The device includes a conveying device (100), an applicator, and a positioning adjustment mechanism as described in any one of claims 1-9, wherein the positioning adjustment mechanism is disposed on a first side (101) of the conveying device (100), the applicator is disposed on a second side (102) of the conveying device (100), the positioning adjustment mechanism is configured to cause the workpiece (200) to abut against the sidewall of the second side (102) of the conveying device (100), and the applicator applies a label to the workpiece (200).

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