A kind of automatic carton gluing device
By designing an automatic gluing device for loading and unloading cartons, and utilizing the relative rotation of the gluing rollers and the heating of the electric heater, gluing is applied to the top and bottom of the cartons simultaneously, solving the problem of low gluing efficiency, improving the gluing effect, and facilitating cleaning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU SHENGCHANG PAPER CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-07
AI Technical Summary
Existing cardboard box gluing equipment has low gluing efficiency and poor glue flow in the glue tank, which affects the gluing effect.
An automatic gluing device for loading and unloading cartons was designed, comprising a gluing tank, a guide roller, first and second gluing rollers, a pump body, a glue outlet pipe, and an electric heater. By the relative rotation of the gluing rollers and the heating of the electric heater, gluing is applied to the top and bottom of the cartons simultaneously, and the gluing spacing can be adjusted for easy cleaning.
It improves the glue coating efficiency, achieves uniform glue coating on the top and bottom of the carton, and facilitates cleaning of glue in the glue coating tank, thus solving the problem of low glue coating efficiency of the glue coating device.
Smart Images

Figure CN224465384U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cardboard box processing technology, specifically to an automatic cardboard box loading and unloading glue application device. Background Technology
[0002] Cardboard boxes are the most widely used packaging products, usually used as wrapping materials for goods or as outer protective layers for items. During the manufacturing process, cardboard boxes require the use of gluing equipment to apply glue.
[0003] Currently, common cardboard box gluing devices suffer from poor gluing efficiency. For example, most gluing devices can only apply glue to one side of the cardboard box. During gluing, the glue inside the glue tank may accumulate due to the low temperature, resulting in low fluidity and affecting the gluing process, thus impacting gluing efficiency.
[0004] There is an urgent need for an automatic cardboard box loading and unloading gluing device to solve the technical defects mentioned above. Utility Model Content
[0005] The purpose of this invention is to provide an automatic gluing device for loading and unloading cartons, so as to solve the problem of low gluing efficiency mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic gluing device for loading and unloading cartons, comprising a base, an internal gluing groove, a guide roller movably connected inside the gluing groove, a first gluing roller positioned above the guide roller, a heat-conducting plate installed at the bottom of the gluing groove, a heating wire installed inside the heat-conducting plate, an electric heater installed at the bottom of the heat-conducting plate, a mounting frame installed at the top of the base, a storage tank installed at the top of the mounting frame, and a fixed... The system includes a fixed frame on which a pump body is mounted. Fixed plates are fixedly connected to both sides inside the frame. A telescopic cylinder is mounted at the bottom of each fixed plate, and a connecting frame is mounted at the bottom of the telescopic cylinder. A second glue-applying roller is movably mounted inside the connecting frame. A first motor is mounted on the right side of the connecting frame. A second motor is mounted inside the machine base. A controller is mounted on the right side of the machine base. A glue-dispensing pipe is mounted at the rear end of the connecting frame, and glue outlets are evenly distributed at the bottom of the glue-applying tank. Temperature sensors are mounted on both sides inside the glue-applying tank.
[0007] As a further technical solution of this utility model, the first coating roller and the guide roller are in contact and rotate, and the second coating roller is positioned directly above the first coating roller.
[0008] As a further technical solution of this utility model, a conveying pipe is installed at the output end of the pump body, the conveying pipe is connected to the top end of the glue outlet pipe, and the glue outlet pipe is arranged above the glue coating tank.
[0009] As a further technical solution of this utility model, the second motor drives the guide roller and the first coating roller to rotate relative to each other through a gear set.
[0010] As a further technical solution of this utility model, the first motor, the pump body, and the second motor are all electrically connected to the controller.
[0011] As a further technical solution of this utility model, the temperature sensor is electrically connected to the electric heater, and the electric heater is connected to the heating wire.
[0012] As a further technical solution of this utility model, a locking bolt is provided at the front end of the telescopic cylinder, and the locking bolt is embedded in the inside of the telescopic cylinder in a threaded connection.
[0013] As a further technical solution of this utility model, a discharge pipe is installed at the bottom of the glue coating tank, and a control valve is installed on the discharge pipe.
[0014] Compared with the prior art, the beneficial effects of this utility model are: the automatic cardboard box gluing device not only realizes the function of enhancing gluing efficiency and adjusting the gluing spacing, but also realizes the function of easy cleaning;
[0015] (1) By setting up a glue coating tank, a glue guide roller, a first glue coating roller, a pump body, a glue outlet pipe and a second glue coating roller, when applying glue, the carton can pass between the first glue coating roller and the second glue coating roller. The first glue coating roller and the second glue coating roller rotate relative to each other. The first glue coating roller can evenly apply the glue in the glue coating tank to the bottom of the carton. At the same time, the pump body delivers the glue in the storage tank to the glue outlet pipe. The glue in the glue outlet pipe drips evenly onto the top of the carton. Then the second glue coating roller can evenly apply the glue on the top of the carton. This structure facilitates simultaneous glue application to the top and bottom of the carton, improving the glue application efficiency.
[0016] (2) By setting a first glue-applying roller, a second glue-applying roller, a telescopic cylinder and a locking bolt, the distance between the first glue-applying roller and the second glue-applying roller can be adjusted according to the thickness of the carton. The telescopic cylinder used to fix the second glue-applying roller can drive it to move up and down. After the second glue-applying roller moves to a suitable height, the locking bolt can be used to lock and fix the telescopic cylinder. This structure realizes the function of easy adjustment of the glue-applying distance.
[0017] (3) By setting up an electric heater, a glue coating tank, a discharge pipe and a control valve, some residual glue is easily accumulated inside the glue coating tank. When cleaning, the electric heater needs to be turned on. The electric heater heats the inside of the glue coating tank through the heating wire. After heating, the glue inside the glue coating tank can melt and flow. Then, the control valve on the discharge pipe can be opened to discharge and clean the glue inside the glue coating tank. This structure realizes the function of easy cleaning. Attached Figure Description
[0018] Figure 1 This is a frontal cross-sectional view of the present invention.
[0019] Figure 2 This is a side view of the second coating roller of this utility model;
[0020] Figure 3 This is a bottom view of the adhesive coating tank structure of this utility model;
[0021] Figure 4 This is a front view structural diagram of the telescopic cylinder of this utility model.
[0022] In the diagram: 1. Base; 2. Electric heater; 3. Glue coating tank; 4. Guide roller; 5. First glue coating roller; 6. Mounting frame; 7. Fixing plate; 8. Storage tank; 9. Fixing frame; 10. Pump body; 11. Delivery pipe; 12. Telescopic cylinder; 13. Locking bolt; 14. Glue outlet pipe; 15. Connecting frame; 16. First motor; 17. Second glue coating roller; 18. Second motor; 19. Controller; 20. Temperature sensor; 21. Discharge pipe; 22. Control valve; 23. Glue outlet; 24. Heat-conducting plate; 25. Heating wire. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-4This utility model provides an embodiment of an automatic cardboard box gluing device, comprising a base 1, a gluing trough 3 inside the base 1, a guide roller 4 movably connected inside the gluing trough 3, a first gluing roller 5 above the guide roller 4, a heat-conducting plate 24 installed at the bottom of the gluing trough 3, an electric heating wire 25 installed inside the heat-conducting plate 24, an electric heater 2 installed at the bottom of the heat-conducting plate 24, a mounting frame 6 installed at the top of the base 1, a storage tank 8 installed at the top of the mounting frame 6, and a fixing frame 9 installed at the top inside the mounting frame 6. The machine is equipped with a pump body 10. Fixing plates 7 are fixedly connected to both sides inside the mounting frame 6. A telescopic cylinder 12 is installed at the bottom of the fixing plate 7. A connecting frame 15 is installed at the bottom of the telescopic cylinder 12. A second glue-applying roller 17 is movably installed inside the connecting frame 15. A first motor 16 is installed on the right side of the connecting frame 15. A second motor 18 is installed inside the machine base 1. A controller 19 is installed on the right side of the machine base 1. A glue-discharging pipe 14 is installed at the rear end of the connecting frame 15. Glue outlets 23 are evenly arranged at the bottom end of the glue-applying tank 3. Temperature sensors 20 are installed on both sides inside the glue-applying tank 3.
[0025] The first coating roller 5 rotates in contact with the guide roller 4, the second coating roller 17 is positioned directly above the first coating roller 5, the output end of the pump body 10 is equipped with a conveying pipe 11, the conveying pipe 11 is connected to the top end of the dispensing pipe 14, and the dispensing pipe 14 is positioned above the coating tank 3.
[0026] Specifically, such as Figure 1 and Figure 2 As shown, the carton can pass between the first glue-applying roller 5 and the second glue-applying roller 17. The first glue-applying roller 5 and the second glue-applying roller 17 rotate relative to each other. The first glue-applying roller 5 can evenly apply the glue inside the glue-applying tank 3 to the bottom of the carton. At the same time, the pump body 10 delivers the glue inside the storage tank 8 to the glue outlet pipe 14. The glue in the glue outlet pipe 14 drips evenly onto the top of the carton. Then, the second glue-applying roller 17 can evenly apply the glue to the top of the carton. This structure facilitates simultaneous glue application to the top and bottom of the carton.
[0027] The second motor 18 drives the guide roller 4 and the first coating roller 5 to rotate relative to each other through a gear set. The first motor 16, the pump body 10, and the second motor 18 are all electrically connected to the controller 19.
[0028] The front end of the telescopic cylinder 12 is provided with a locking bolt 13, which is embedded in the inside of the telescopic cylinder 12 and is threaded.
[0029] Specifically, such as Figure 1 and Figure 3As shown, the distance between the first glue-applying roller 5 and the second glue-applying roller 17 can be adjusted according to the thickness of the carton. The telescopic cylinder 12 used to fix the second glue-applying roller 17 can drive it to move up and down. After the second glue-applying roller 17 moves to a suitable height, the telescopic cylinder 12 can be locked and fixed using the locking bolt 13.
[0030] Temperature sensor 20 is electrically connected to electric heater 2, electric heater 2 is connected to heating wire 25, and discharge pipe 21 is installed at the bottom of glue coating tank 3, and control valve 22 is installed on discharge pipe 21.
[0031] Specifically, such as Figure 1 and Figure 4 As shown, residual glue tends to accumulate inside the glue coating tank 3. When cleaning, the electric heater 2 needs to be turned on. The electric heater 2 heats the inside of the glue coating tank 3 through the heating wire 25. After heating, the glue inside the glue coating tank 3 can melt and flow. Then, the control valve 22 on the discharge pipe 21 can be opened to discharge and clean the glue inside the glue coating tank 3.
[0032] Working principle: The cardboard box passes between the first glue-applying roller 5 and the second glue-applying roller 17. The first glue-applying roller 5 and the second glue-applying roller 17 rotate relative to each other. The first glue-applying roller 5 can evenly apply the glue inside the glue-applying tank 3 to the bottom of the cardboard box. At the same time, the pump body 10 delivers the glue inside the storage tank 8 to the glue outlet pipe 14. The glue in the glue outlet pipe 14 drips evenly onto the top of the cardboard box. Then, the second glue-applying roller 17 can evenly apply the glue to the top of the cardboard box. This structure facilitates simultaneous glue application to the top and bottom of the cardboard box. Some residual glue may easily accumulate inside the glue-applying tank 3, requiring activation during cleaning. The electric heater 2 heats the inside of the glue coating tank 3 through the heating wire 25. After heating, the glue inside the glue coating tank 3 can melt and flow. Then, the control valve 22 on the discharge pipe 21 can be opened to discharge and clean the glue inside the glue coating tank 3. The distance between the first glue coating roller 5 and the second glue coating roller 17 can be adjusted according to the thickness of the carton. The telescopic cylinder 12 used to fix the second glue coating roller 17 can drive it to move up and down. After the second glue coating roller 17 moves to a suitable height, the telescopic cylinder 12 can be locked and fixed with the locking bolt 13. This structure realizes the function of easy adjustment of the glue coating distance.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. An automatic cardboard box loading and unloading glue applicator, comprising a base (1), characterized in that: The machine base (1) is provided with a glue coating tank (3) inside. A guide roller (4) is movably connected inside the glue coating tank (3). A first glue coating roller (5) is provided above the guide roller (4). A heat-conducting plate (24) is installed at the bottom of the glue coating tank (3). An electric heating wire (25) is installed inside the heat-conducting plate (24). An electric heater (2) is installed at the bottom of the heat-conducting plate (24). A mounting frame (6) is installed at the top of the machine base (1). A storage tank (8) is installed at the top of the mounting frame (6). A fixing frame (9) is installed at the top inside the mounting frame (6). A pump body (10) is installed on the fixing frame (9). The mounting frame (6) is located inside the pump body (10). A fixed plate (7) is fixedly connected to both sides of the machine. A telescopic cylinder (12) is installed at the bottom of the fixed plate (7). A connecting frame (15) is installed at the bottom of the telescopic cylinder (12). A second glue-applying roller (17) is movably installed inside the connecting frame (15). A first motor (16) is installed on the right side of the connecting frame (15). A second motor (18) is installed inside the machine base (1). A controller (19) is installed on the right side of the machine base (1). A glue-discharging pipe (14) is installed at the rear end of the connecting frame (15). Glue outlets (23) are evenly arranged at the bottom end of the glue-applying tank (3). Temperature sensors (20) are installed on both sides inside the glue-applying tank (3).
2. The automatic cardboard box loading and unloading gluing device according to claim 1, characterized in that: The first coating roller (5) rotates in contact with the guide roller (4), and the second coating roller (17) is positioned directly above the first coating roller (5).
3. The automatic cardboard box loading and unloading gluing device according to claim 1, characterized in that: The pump body (10) is equipped with a delivery pipe (11) at its output end. The delivery pipe (11) is connected to the top of the glue outlet pipe (14), which is located above the glue coating tank (3).
4. The automatic cardboard box loading and unloading gluing device according to claim 1, characterized in that: The second motor (18) drives the guide roller (4) and the first coating roller (5) to rotate relative to each other via a gear set.
5. The automatic cardboard box loading and unloading gluing device according to claim 1, characterized in that: The first motor (16), the pump body (10), and the second motor (18) are all electrically connected to the controller (19).
6. The automatic cardboard box loading and unloading gluing device according to claim 1, characterized in that: The temperature sensor (20) is electrically connected to the electric heater (2), and the electric heater (2) is connected to the heating wire (25).
7. The automatic cardboard box loading and unloading gluing device according to claim 1, characterized in that: The front end of the telescopic cylinder (12) is provided with a locking bolt (13), which is embedded inside the telescopic cylinder (12) in a threaded connection.
8. The automatic cardboard box loading and unloading gluing device according to claim 1, characterized in that: The bottom end of the glue coating tank (3) is equipped with a discharge pipe (21), and a control valve (22) is installed on the discharge pipe (21).