A carton positioning mechanism for a cartoner

Abstract

The utility model provides a paste the box machine paper box positioning mechanism belongs to paper box processing technical field. Including base, transmission belt, dismounting subassembly, limiting component, the top of base is opened with U type mounting hole groove, transmission belt installs in the U type mounting hole groove of base top, the dismounting subassembly includes rectangular clamping piece, one side of rectangular clamping piece is fixedly connected with one side of base, the outer surface of rectangular clamping piece is connected with rectangular clamping frame, limiting component sets up one side at rectangular clamping frame, limiting component includes mounting plate, the bottom of mounting plate is fixedly connected with two connecting rods. Through the effect of dismounting subassembly, can be connected to limiting component and base, so that limiting component can limit paper box in the transmission process, and is fixed in the gluing process, and then makes paper box no matter in transmission or gluing, can keep the relative stable state, will not easily occur the shift of position.

Description

Technical Field

[0001] This utility model relates to the field of paper box processing technology, and in particular to a paper box positioning mechanism for a gluing machine. Background Technology

[0002] In the packaging and printing industry, the carton gluing machine is a key piece of equipment in packaging box processing, undertaking the important task of folding and gluing printed and die-cut cardboard. With the development of the industry, higher requirements have been placed on the production efficiency and product quality of the carton gluing machine. The precise positioning and stable conveying of the cardboard box during the gluing process have become key factors affecting the quality of the gluing. Currently, most carton gluing machines on the market operate by conveying pre-cut semi-finished cartons to various processing stations via a conveyor belt after power is turned on. However, in actual production, the cartons often experience positional shifts as they move along the conveyor belt due to various factors, such as belt vibration, uneven weight distribution, and airflow interference. This not only affects the positioning accuracy of the cartons but can also lead to deviations in the subsequent glue application, resulting in gluing quality problems such as uneven gluing and poor carton formation. In severe cases, it can even cause the cartons to be scrapped, increasing production costs. Therefore, this application provides a carton positioning mechanism for a carton gluing machine to meet the requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a carton positioning mechanism for a carton gluing machine, which can limit the position of the carton during its movement on the conveyor belt and fix the carton during the gluing process, thereby preventing the carton from shifting position during conveying and gluing.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A carton positioning mechanism for a carton gluing machine includes a base, the top of which has a U-shaped mounting slot. A drive belt, which is installed in a U-shaped mounting slot on the top of the base; The assembly / disassembly component includes a rectangular clip, one side of which is fixedly connected to one side of the base, and a rectangular clip frame is attached to the outer surface of the rectangular clip. A limiting component is provided on one side of a rectangular frame. The limiting component includes a mounting plate. Two connecting rods are symmetrically fixedly connected to the bottom of the mounting plate. A rectangular limiting plate is fixedly connected to the bottom end of the connecting rods. A hydraulic telescopic rod is installed on the top of the mounting plate. A pressure plate is fixedly connected to the output end of the hydraulic telescopic rod. A transmission assembly, wherein the transmission assembly is disposed on one side of the base; The adhesive applicator is located on top of the drive belt.

[0005] The rectangular limiting plate of the limiting component and the pressure plate driven by the hydraulic telescopic rod form a positioning structure that limits the horizontal movement and presses the vertically, which avoids the carton from shifting during processing. The assembly and disassembly components and the limiting components reserve adjustment space for subsequent adaptation to different sizes of carton.

[0006] Optionally, a first insertion hole is provided on one side of the rectangular card block, and a second insertion hole is provided on one side of the rectangular card frame. A threaded shovel is inserted into the inner wall of the first and second insertion holes, and a fixing nut is threaded to one end of the threaded insertion rod.

[0007] Inserting or unplugging the threaded rod and tightening the fixing nut will lock or disassemble the rectangular block and the rectangular frame. Positioning is achieved through the first and second holes of the coaxial axis, ensuring that there is no offset after the rectangular frame and the rectangular block are connected, avoiding position deviation caused by disassembly and assembly, and further ensuring the positioning accuracy of the carton.

[0008] Optionally, an L-shaped connecting rod is fixedly connected to one side of the mounting plate, and one end of the L-shaped connecting rod is fixedly connected to the rectangular frame.

[0009] Compared to traditional snap-fit ​​or sheet-like connections, the rigid connection of the L-shaped link can withstand greater lateral impact force, preventing the mounting plate from shifting due to the impact on the limiting components during high-speed paper box conveying. At the same time, the L-shaped link can evenly transmit the vertical pressure of the pressure plate to the rectangular frame, preventing local deformation of the mounting plate, extending the service life of the limiting components, and ensuring uniform clamping force of the pressure plate on the paper box, thus improving positioning stability.

[0010] Optionally, a plurality of rectangular blocks, which are made of rubber, are fixedly connected to the bottom of the pressure plate.

[0011] The elastic properties of rubber can buffer the clamping force of the pressure plate, avoiding indentations and damage to the paper box caused by direct contact with the hard pressure plate. It is suitable for processing paper boxes with softer paper or printed patterns on the surface. The high coefficient of friction of rubber can increase the contact friction between the pressure plate and the paper box, so the paper box is not easy to slip even under the vibration of the conveyor belt or the slight force of the glue roller seat.

[0012] Optionally, a limiting rod is fixedly connected to the top of the pressure plate, and the limiting rod is slidably disposed on the inner wall of the mounting plate.

[0013] The sliding fit between the limit rod and the mounting plate strictly restricts the movement trajectory of the pressure plate to the vertical direction, avoiding tilting or lateral displacement of the pressure plate due to uneven force when driven by the hydraulic telescopic rod, and ensuring that the pressure plate is pressed in the same position each time.

[0014] Optionally, the transmission assembly includes a rectangular frame, one side of which is fixedly connected to one side of the base. A drive motor is installed on one side of the rectangular frame, and a threaded rod is fixedly connected to the output end of the drive motor. A threaded hole block is threadedly connected to the outer surface of the threaded rod, and a sliding block is fixedly connected to one side of the threaded hole block.

[0015] The drive motor moves the screw hole block through the threaded rod, which can synchronize the moving speed of the glue application component with the paper box conveying speed compared to traditional belt drive or gear drive.

[0016] Optionally, a fixed rod is fixedly connected between the two sides of the rectangular frame, the sliding block is slidably disposed on the outer surface of the fixed rod, and an auxiliary connecting rod is fixedly connected to one side of the sliding block.

[0017] The sliding block slides on the outer surface of the fixed rod, thereby limiting the screw hole block so that it can only move along the axial direction of the threaded rod.

[0018] Optionally, the glue application assembly includes an L-shaped plate, one side of which is fixedly connected to one end of an auxiliary connecting rod, a glue storage cylinder is fixedly connected to the top of the L-shaped plate, a glue application roller seat is rotatably arranged at the bottom of the L-shaped plate, a glue tube is installed at the glue outlet of the glue storage cylinder, and one end of the glue tube is connected to the glue application roller seat.

[0019] The L-shaped plate integrates components such as the glue storage tank and the glue application roller seat into one unit, which reduces the space occupied compared to traditional glue application assemblies. The glue storage tank is directly connected to the glue application roller seat through a glue tube, which reduces the number of joints in the glue delivery path and lowers the probability of glue blockage compared to traditional glue circuits.

[0020] Optionally, a sliding rod is slidably provided on the top of the L-shaped plate, a circular baffle is fixedly connected to the top of the sliding rod, a wheel frame is fixedly connected to the bottom of the sliding rod, a coating roller is rotatably arranged between the two sides of the wheel frame, and a spring is sleeved on the outer surface of the sliding rod, with the two ends of the spring being fixedly connected to the circular baffle and the L-shaped plate respectively.

[0021] The elastic force of the spring can automatically adjust the contact pressure of the coating roller according to the flatness of the carton surface, so that even if there are slight bumps or depressions on the carton surface, the coating roller can always keep the carton surface tightly closed.

[0022] Compared with the prior art, this utility model has at least the following beneficial effects: By using the assembly and disassembly components, the limiting components can be connected to the base, allowing the limiting components to limit the paper box during the conveying process and fix it during the gluing process. This ensures that the paper box can maintain a relatively stable state during both conveying and gluing, and will not easily shift its position. The transmission component can drive the glue applicator to move left and right, so that the glue applicator can apply glue to the top of the cardboard box. During the application process, the glue can be evenly smoothed by the coating roller, so that the glue can be relatively evenly distributed on the glued area of ​​the cardboard box. Attached Figure Description The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0023] Figure 1 A schematic diagram of the carton positioning mechanism of a carton gluing machine; Figure 2 A schematic diagram of the base structure of the carton positioning mechanism of a carton gluing machine; Figure 3 A schematic diagram of the mounting plate structure for the carton positioning mechanism of a carton gluing machine; Figure 4 A schematic diagram of the rectangular frame structure of the carton positioning mechanism of a carton gluing machine; Figure 5 A schematic diagram of the L-shaped plate structure for the carton positioning mechanism of a carton gluing machine.

[0024] [Figure Labels] 1. Base; 2. Drive belt; 3. Assembly / Disassembly Components; 31. Rectangular Clamp; 32. First Insertion Hole; 33. Rectangular Clamp Frame; 34. Second Insertion Hole; 35. Threaded Insertion Rod; 36. Fixing Nut; 4. Limiting assembly; 41. L-shaped connecting rod; 42. Mounting plate; 43. Connecting rod; 44. Rectangular limiting plate; 45. Hydraulic telescopic rod; 46. Pressure plate; 47. Rectangular strip; 48. Limiting rod; 5. Transmission assembly; 51. Rectangular frame; 52. Drive motor; 53. Threaded rod; 54. Threaded hole block; 55. Sliding block; 56. Auxiliary connecting rod; 57. Fixed rod; 6. Glue application assembly; 61. L-shaped plate; 62. Glue storage cylinder; 63. Glue hose; 64. Glue application roller seat; 65. Sliding rod; 66. Circular baffle; 67. Spring; 68. Wheel frame; 69. Coating roller.

[0025] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0029] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0030] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0031] The carton positioning mechanism for a gluing machine provided in this embodiment aims to solve the problem of easy positional displacement of the carton when it is conveyed on the conveyor belt 2 and during glue application. The following technical solution is provided to address this issue: It consists of a base 1, a conveyor belt 2, a disassembly / assembly assembly 3, a limiting assembly 4, a transmission assembly 5, and a glue application assembly 6. These components work together to ensure stable conveying of the carton on the conveyor belt 2 and to fix it in place during glue application.

[0032] like Figures 1-5 As shown, an embodiment of this utility model provides a carton positioning mechanism for a carton gluing machine, such as... Figure 1 As shown, the assembly includes a base 1, a transmission belt 2, a disassembly / assembly assembly 3, a limiting assembly 4, a transmission assembly 5, and an adhesive application assembly 6. The top of the base 1 has a U-shaped mounting slot for mounting the transmission belt 2. The transmission belt 2 is fitted into the U-shaped mounting slot on the top of the base 1. Both ends of the transmission belt 2 are connected to the drive roller and driven roller of the gluing machine, respectively, ensuring smooth transmission within the U-shaped mounting slot. The transmission speed can be adjusted by the control system of the gluing machine for conveying the paper boxes to be positioned. Figure 2 and Figure 3 As shown, the disassembly and assembly component 3 includes a rectangular locking block 31 and a rectangular locking frame 33. One side of the rectangular locking block 31 is fixedly connected to one side of the base 1 by welding. The rectangular locking frame 33 is detachably snapped onto the outer surface of the rectangular locking block 31 to achieve a detachable connection between the limiting component 4 and the base 1. Figure 1 and Figure 3As shown, the limiting component 4 is located on one side of the rectangular frame 33, including a mounting plate 42, connecting rods 43, a rectangular limiting plate 44, a hydraulic telescopic rod 45, and a pressure plate 46. Two connecting rods 43 are symmetrically fixedly connected to the bottom of the mounting plate 42. The bottom ends of the connecting rods 43 are fixedly connected to the rectangular limiting plate 44 by welding, which is used to limit the lateral position of the cardboard box. The hydraulic telescopic rod 45 is vertically installed on the top of the mounting plate 42. It is a small electric hydraulic telescopic rod, model HTA150, with a rated thrust of 500N and a stroke of 50mm. Its output end faces downward and is fixedly connected to the pressure plate 46, which is used to drive the pressure plate 46 to move up and down to press the cardboard box. Figure 1 As shown, the transmission component 5 is located on one side of the base 1 and is used to drive the glue application component 6 to move synchronously along the paper box conveying direction. The glue application component 6 is located on the top of the transmission belt 2 and is connected to the transmission component 5 for applying glue to the positioned paper box.

[0033] By installing the limiting component 4 to the base 1 through the disassembly and assembly component 3, the limiting component 4 can limit the movement of the paper box during conveying and fix it during glue application, thereby improving the stability of the paper box during glue application and transmission.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the disassembly and assembly assembly 3 also includes a first insertion hole 32, a second insertion hole 34, a threaded insertion rod 35, and a fixing nut 36. The first insertion hole 32 is located on one side of the rectangular locking block 31, and the second insertion hole 34 is located on one side of the rectangular locking frame 33. The axes of the first insertion hole 32 and the second insertion hole 34 are collinear. One end of the threaded insertion rod 35 is inserted into the first insertion hole 32 and the second insertion hole 34 in sequence and is threadedly connected to the fixing nut 36 to achieve locking and fixing of the rectangular locking block 31 and the rectangular locking frame 33.

[0035] like Figure 1 and Figure 3 As shown, the limiting component 4 also includes an L-shaped connecting rod 41. One end of the L-shaped connecting rod 41 is fixedly connected to one side of the mounting plate 42, and the other end is fixedly connected to the outer wall of the rectangular frame 33, so as to realize the fixed connection between the mounting plate 42 and the rectangular frame 33.

[0036] like Figure 3 As shown, the bottom of the pressure plate 46 is fixedly connected with several rectangular strips 47 evenly distributed in the horizontal direction. The rectangular strips 47 are made of rubber, which can not only prevent the surface of the cardboard box from being damaged when pressed, but also increase the friction with the cardboard box to improve positioning stability.

[0037] like Figure 1 and Figure 3As shown, the limiting assembly 4 also includes at least two limiting rods 48. The bottom end of the limiting rod 48 is fixedly connected to the top of the pressure plate 46, and the top end slides through the mounting plate 42 and extends above it to limit the movement direction of the pressure plate 46 and prevent it from deviating when moving up and down.

[0038] like Figure 1 and Figure 4 As shown, the transmission assembly 5 includes a rectangular frame 51, a drive motor 52, a threaded rod 53, a threaded hole block 54, and a sliding block 55. One side of the rectangular frame 51 is fixedly connected to one side of the base 1. The drive motor 52 is horizontally mounted on the outer side of one end of the rectangular frame 51, and its output end passes through the side wall of the rectangular frame 51 and is fixedly connected to one end of the threaded rod 53. The other end of the threaded rod 53 is rotatably connected to the inner side wall of the other end of the rectangular frame 51. The threaded hole block 54 is threaded onto the outer surface of the threaded rod 53. One side of the sliding block 55 is fixedly connected to one side of the threaded hole block 54, and the sliding block 55 slides against the inner wall of the rectangular frame 51 to limit the threaded hole block 54 from rotating synchronously with the threaded rod 53.

[0039] like Figure 1 and Figure 4 As shown, the transmission assembly 5 also includes a fixed rod 57 and an auxiliary connecting rod 56; the two ends of the fixed rod 57 are fixedly connected to the inner walls of the two sides of the rectangular frame 51 respectively, and the fixed rod 57 is arranged parallel to the threaded rod 53. The sliding block 55 is slidably sleeved on the outer surface of the fixed rod 57 to further improve the stability of the movement of the sliding block 55; one end of the auxiliary connecting rod 56 is fixedly connected to the other side of the sliding block 55, and the other end extends to the outside of the rectangular frame 51 and is connected to the glue application assembly 6 to drive the glue application assembly 6 to move synchronously.

[0040] like Figure 1 and Figure 5 As shown, the glue application assembly 6 includes an L-shaped plate 61, a glue storage cylinder 62, a glue tube 63, and a glue application roller seat 64. One side of the L-shaped plate 61 is fixedly connected to one end of the auxiliary connecting rod 56. The glue storage cylinder 62 is fixedly installed on the top of the horizontal section of the L-shaped plate 61 for storing glue. The glue application roller seat 64 is rotatably disposed at the bottom of the vertical section of the L-shaped plate 61 and has a glue cavity inside. One end of the glue tube 63 is connected to the glue outlet of the glue storage cylinder 62, and the other end is connected to the glue inlet of the glue application roller seat 64 for conveying the glue in the glue storage cylinder 62 to the glue application roller seat 64.

[0041] like Figure 1 and Figure 5As shown, the glue coating assembly 6 also includes a sliding rod 65, a circular baffle 66, a spring 67, a wheel frame 68, and a coating roller 69. The sliding rod 65 slides vertically through the horizontal section of the L-shaped plate 61, with its top end fixedly connected to the bottom of the circular baffle 66 and its bottom end extending below the L-shaped plate 61 and fixedly connected to the top of the wheel frame 68. The coating roller 69 is rotatably disposed between the two side walls of the wheel frame 68, and the coating roller 69 is adapted to the glue outlet end of the glue coating roller seat 64 for uniformly coating the glue onto the surface of the cardboard box. The spring 67 is sleeved on the outer surface of the sliding rod 65, with its two ends fixedly connected to the bottom of the circular baffle 66 and the top of the L-shaped plate 61, respectively, for providing elastic pressure so that the coating roller 69 is always in close contact with the surface of the cardboard box, ensuring uniform glue coating.

[0042] Working principle like Figures 1-5 As shown, the rectangular card frame 33 and the rectangular card block 31 are snapped together, and the threaded rod 35 is inserted into the first insertion hole 32 and the second insertion hole 34. At this time, the fixing nut 36 is fixed to the threaded rod 35, thereby fixing the L-shaped connecting rod 41 and the mounting plate 42 to the base 1. At this time, the hydraulic telescopic rod 45 is activated, so that the pressure plate 46 is flush with the rectangular limiting plates 44 on both sides. The cardboard box is then placed on the transmission belt 2. The cardboard box on the transmission belt 2 is limited by the pressure plate 46 and the rectangular limiting plates 44, so that it will not shift vertically from the transmission belt 2. When the cardboard box moves to the designated position, the hydraulic telescopic rod 45 is activated, so that the pressure plate 46 can fix the cardboard box. At the same time, driven by the drive motor 52, the threaded rod 53 can drive the screw hole block 54 to move, which in turn can drive the sliding block 55 and the auxiliary connecting rod 56 to move, so that the coating roller 69 and the glue coating roller seat 64 move horizontally. At this time, the glue coating roller seat 64 will spray glue onto the top of the cardboard box, and then smooth the glue.

[0043] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A carton positioning mechanism for a carton gluing machine, characterized in that, include: The base (1) has a U-shaped mounting hole groove on its top; The transmission belt (2) is installed in the U-shaped mounting hole groove on the top of the base (1); The disassembly and assembly component (3) includes a rectangular clip (31), one side of which is fixedly connected to one side of the base (1), and a rectangular clip frame (33) is attached to the outer surface of the rectangular clip (31). Limiting component (4), the limiting component (4) is set on one side of rectangular card frame (33), the limiting component (4) includes mounting plate (42), two connecting rods (43) are symmetrically fixedly connected to the bottom of the mounting plate (42), a rectangular limiting plate (44) is fixedly connected to the bottom end of the connecting rod (43), a hydraulic telescopic rod (45) is installed on the top of the mounting plate (42), and a pressure plate (46) is fixedly connected to the output end of the hydraulic telescopic rod (45). Transmission assembly (5), the transmission assembly (5) is disposed on one side of the base (1); The adhesive application assembly (6) is located on top of the transmission belt (2).

2. The carton positioning mechanism for a gluing machine according to claim 1, characterized in that, The rectangular card block (31) has a first insertion hole (32) on one side, and the rectangular card frame (33) has a second insertion hole (34) on one side. The inner walls of the first insertion hole (32) and the second insertion hole (34) are fitted with threaded rods (35), and one end of the threaded rods (35) is threadedly connected to a fixing nut (36).

3. The carton positioning mechanism for a gluing machine according to claim 1, characterized in that, An L-shaped connecting rod (41) is fixedly connected to one side of the mounting plate (42), and one end of the L-shaped connecting rod (41) is fixedly connected to the rectangular card frame (33).

4. The carton positioning mechanism for a gluing machine according to claim 1, characterized in that, The bottom of the pressure plate (46) is fixedly connected with several rectangular strips (47), which are made of rubber.

5. The carton positioning mechanism for a gluing machine according to claim 1, characterized in that, A limiting rod (48) is fixedly connected to the top of the pressure plate (46), and the limiting rod (48) is slidably disposed on the inner wall of the mounting plate (42).

6. The carton positioning mechanism for a gluing machine according to claim 1, characterized in that, The transmission assembly (5) includes a rectangular frame (51), one side of which is fixedly connected to one side of the base (1). A drive motor (52) is installed on one side of the rectangular frame (51), and a threaded rod (53) is fixedly connected to the output end of the drive motor (52). A threaded hole block (54) is threadedly connected to the outer surface of the threaded rod (53), and a sliding block (55) is fixedly connected to one side of the threaded hole block (54).

7. The carton positioning mechanism for a gluing machine according to claim 6, characterized in that, A fixed rod (57) is fixedly connected between the two sides of the rectangular frame (51), and the sliding block (55) is slidably disposed on the outer surface of the fixed rod (57). An auxiliary connecting rod (56) is fixedly connected to one side of the sliding block (55).

8. The carton positioning mechanism for a gluing machine according to claim 1, characterized in that, The glue application assembly (6) includes an L-shaped plate (61), one side of which is fixedly connected to one end of an auxiliary connecting rod (56). A glue storage cylinder (62) is fixedly connected to the top of the L-shaped plate (61), and a glue application roller seat (64) is rotatably provided at the bottom of the L-shaped plate (61). A glue tube (63) is installed at the glue outlet of the glue storage cylinder (62), and one end of the glue tube (63) is connected to the glue application roller seat (64).

9. The carton positioning mechanism for a gluing machine according to claim 8, characterized in that, A sliding rod (65) is slidably provided on the top of the L-shaped plate (61). A round baffle (66) is fixedly connected to the top of the sliding rod (65). A wheel frame (68) is fixedly connected to the bottom of the sliding rod (65). A coating roller (69) is rotatably provided between the two sides of the wheel frame (68). A spring (67) is sleeved on the outer surface of the sliding rod (65). The two ends of the spring (67) are fixedly connected to the round baffle (66) and the L-shaped plate (61) respectively.

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