Visual alignment type full-automatic carton box sticking machine

Abstract

The application relates to the technical field of carton processing equipment, and discloses a visual alignment type full-automatic carton sticking machine, which comprises a workbench, a conveying mechanism is arranged in the workbench, a portal frame is welded to the upper surface of the workbench, a first electric cylinder is arranged on the upper surface of the portal frame, a supporting seat is arranged at the telescopic end of the first electric cylinder, a lead screw is arranged in the supporting seat, and a threaded sleeve is threadedly connected to the surface of the lead screw. In the application, the servo-driven compact screw glue gun is used to replace the traditional pneumatic glue gun, the screw is directly driven by the servo motor, the glue output is accurately adjusted, the adjustable pressure output of the gear pump is matched, the glue line diameter deviation is strictly controlled within the standard range, the thin carton is ensured to be free of glue overflow pollution, the heavy carton is ensured to have the qualified bonding strength, and the product qualified rate is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box processing equipment technology, and in particular to a vision alignment type fully automatic cardboard box gluing machine. Background Technology

[0002] In the field of fully automated carton gluing production, the glue dispensing accuracy and trajectory control stability of the glue gun directly determine the gluing quality and appearance integrity of the carton. Currently, the pneumatic glue guns widely used in the industry have significant technical limitations and can hardly meet the production needs of high-speed, high-precision, and multi-specification cartons.

[0003] Pneumatic glue guns rely on compressed air pressure to drive the glue to be extruded. Affected by factors such as fluctuations in air source pressure and changes in glue viscosity, the glue output is inconsistent, and the glue line diameter deviation often exceeds 0.5mm. For thin corrugated boxes, excessive glue can easily cause glue overflow and contaminate the printed surface; while for heavy boxes, insufficient glue may lead to insufficient bonding strength. Utility Model Content

[0004] To solve the above problems, this utility model provides a vision alignment type fully automatic carton gluing machine.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a vision alignment type fully automatic carton gluing machine, including a worktable, a conveying mechanism installed inside the worktable, a gantry frame welded to the upper surface of the worktable, a first electric cylinder installed on the upper surface of the gantry frame, a support seat installed at the telescopic end of the first electric cylinder, and a lead screw installed inside the support seat, a threaded sleeve threaded to the surface of the lead screw, the threaded sleeve being welded to the side surface of a glue gun, and a gun head threaded to the port of the glue gun, a screw rod installed inside the glue gun, and a servo motor installed at the end of the screw rod, the glue gun being connected to a gear pump through a glue delivery pipe, and the gear pump being connected to a glue tank through a glue delivery pipe.

[0006] By adopting the above technical solution, and replacing the traditional pneumatic glue gun with a servo-driven precision screw glue gun, the screw is directly driven by a servo motor to achieve precise adjustment of the glue dispensing amount. Combined with the adjustable pressure output of the gear pump, the deviation of the glue line diameter is strictly controlled within the standard range, ensuring that thin cartons are free of glue overflow pollution and that the bonding strength of heavy cartons meets the standards, thus greatly improving the product qualification rate.

[0007] Furthermore, a laser positioning light is connected to the side surface of the glue gun via a bracket, a stepper motor is installed at the end of the lead screw, and the stepper motor has an electromagnetic locking device. A guide rod is installed inside the support base, and the guide rod is slidably connected to the threaded sleeve.

[0008] By adopting the above technical solution, the laser positioning light emits a laser mark corresponding to the gun head, which makes it easy for operators to quickly calibrate the alignment of the glue gun with the carton gluing opening, reducing debugging time. The stepper motor at the end of the lead screw can precisely control the speed of the lead screw, realizing stepless adjustment of the horizontal movement speed of the glue gun to adapt to different glue injection rhythms. The sliding fit between the guide rod and the threaded sleeve further improves the stability of the horizontal movement of the glue gun.

[0009] Furthermore, a vision camera is installed on the inner bottom surface of the gantry frame, and the vision camera is electrically connected to the overall integrated controller via wires.

[0010] By adopting the above technical solution, the vision camera acquires images of the cardboard box gluing in real time and transmits them to the integrated controller. The controller accurately identifies the gluing position through image processing algorithms, compares it with the preset trajectory, and generates adjustment commands to control the glue gun action, thereby achieving dynamic alignment and glue injection.

[0011] Furthermore, a flow sensor is installed on the dispensing tube.

[0012] By adopting the above technical solution, the flow sensor monitors the glue flow rate in the glue delivery tube in real time and feeds the data back to the controller.

[0013] Furthermore, a second electric cylinder is installed on the upper surface of the gantry frame, and a downward pressure wheel is installed on the telescopic end of the second electric cylinder.

[0014] By adopting the above technical solution, the lower pressure roller automatically rises and falls under the action of the second electric cylinder, ensuring that the carton always fits the conveyor surface and avoiding blurry images or positioning errors caused by upward tilting.

[0015] Furthermore, lighting lamps are installed on the inner side of the gantry frame.

[0016] By adopting the above technical solution, the lighting provides uniform illumination, eliminating the impact of reflections and shadows on the cardboard box surface on the visual camera's imaging.

[0017] Furthermore, the conveying mechanism consists of a conveying roller, a conveyor belt, and a conveying motor. The conveying roller is installed inside the worktable, and the conveying motor is installed at the end of the conveying roller. The conveyor belt is installed on the surface of the conveying roller.

[0018] By adopting the above technical solution, the conveyor motor drives the conveyor roller to rotate, which in turn drives the conveyor belt to transport cartons, thus realizing continuous automated production.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. In this application, a servo-driven precision screw glue gun is used to replace the traditional pneumatic glue gun. The screw is directly driven by a servo motor to achieve precise adjustment of the glue dispensing amount. Combined with the adjustable pressure output of the gear pump, the deviation of the glue line diameter is strictly controlled within the standard range, ensuring that thin cartons are free of glue overflow pollution and that the bonding strength of heavy cartons meets the standards, thus greatly improving the product qualification rate.

[0021] 2. In this application, a laser positioning light is used to emit a laser mark corresponding to the gun head, which makes it easy for operators to quickly calibrate the alignment of the glue gun with the carton gluing opening, reducing debugging time. The stepper motor at the end of the lead screw can precisely control the speed of the lead screw, realizing stepless adjustment of the horizontal movement speed of the glue gun to adapt to different glue injection rhythms. The sliding fit between the guide rod and the threaded sleeve further improves the stability of the horizontal movement of the glue gun. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the support base and its connection structure according to an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the glue dispensing gun and its connection structure according to an embodiment of the present invention.

[0025] In the diagram: 1. Workbench; 2. Conveying mechanism; 3. Conveying roller; 4. Conveyor belt; 5. Gantry frame; 6. First electric cylinder; 7. Support base; 8. Lead screw; 9. Threaded sleeve; 10. Guide rod; 11. Stepper motor; 12. Glue gun; 13. Gun head; 14. Screw; 15. Servo motor; 16. Gear pump; 17. Glue box; 18. Laser positioning light; 19. Vision camera; 20. Second electric cylinder; 21. Lower pressure roller; 22. Lighting lamp. Detailed Implementation

[0026] The technical solutions in 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. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] like Figure 1-3As shown in the embodiment of this application, a vision alignment type fully automatic carton gluing machine is disclosed, including a workbench 1, a conveying mechanism 2 installed inside the workbench 1, a gantry frame 5 welded to the upper surface of the workbench 1, a first electric cylinder 6 installed on the upper surface of the gantry frame 5, a support base 7 installed at the telescopic end of the first electric cylinder 6, and a lead screw 8 installed inside the support base 7. A threaded sleeve 9 is threadedly connected to the surface of the lead screw 8, and the threaded sleeve 9 is welded to the side surface of the glue gun 12. A gun head 13 is threadedly connected to the port of the glue gun 12. A screw 14 is installed inside the glue gun 12, and a servo motor 15 is installed at the end of the screw 14. The glue gun 12 is connected to a gear pump 16 through a glue delivery pipe, and the gear pump 16 is connected to a glue tank 17 through a glue delivery pipe.

[0028] Workbench 1: Workbench 1 provides a rigid support frame for the overall equipment. Inside, the conveyor roller 3 is horizontally fixed by bearing seats. The conveyor mechanism 2 is linked with the overall integrated control through pulse signals. When the vision system detects that the carton has arrived at the glue dispensing station, the controller sends a deceleration command to coordinate with the glue dispensing rhythm of the glue gun 12.

[0029] Gantry frame 5 and glue injection adjustment system: Gantry frame 5 is welded to workbench 1 and reinforced with collision bolts. The first electric cylinder 6 is vertically fixed to the upper surface of gantry frame 5 through a flange structure. Its telescopic end is rigidly connected to support base 7 through bolts to realize the lifting and lowering adjustment of glue injection gun 12. Inside support base 7, lead screw 8 is horizontally installed through bearings. One end of lead screw 8 is connected to the output shaft of stepper motor 11 through a coupling, and the other end is limited by deep groove ball bearing. Threaded sleeve 9 is welded to the side of glue injection gun 12 and slides in cooperation with parallel guide rod 10. When stepper motor 11 receives pulse signal from controller and drives lead screw 8 to rotate, threaded sleeve 9 moves linearly along guide rod 10, driving glue injection cavity to achieve horizontal fine adjustment. Combined with the lifting action of first electric cylinder 6, a two-dimensional adjustment space is formed, which greatly reduces the alignment deviation between gun head 13 and carton gluing.

[0030] The glue gun 12 and the glue circuit system: The glue gun 12 is rigidly connected to the threaded sleeve 9. Its internal screw 14 is connected to the output shaft of the servo motor 15 via a key. The gun head 13 is connected to the port of the glue gun 12 via a threaded structure. When replacing, only the gun head 13 needs to be rotated to complete the disassembly and assembly. The inlet of the glue gun 12 is connected to the glue delivery tube via a quick-connect connector. The gear pump 16 and the glue tank 17 are connected in series. The gear pump 16 is driven by a speed-regulating motor. After pressurizing the glue in the glue tank 17, it is delivered to the glue injection chamber. When the servo motor 15 drives the screw 14 to rotate, the glue forms a continuous glue line through the gun head 13 under the synergistic action of the thrust of the screw 14 and the pressure of the gear pump 16. By adjusting the matching relationship between the speed of the screw 14 and the pressure of the gear pump 16, the diameter of the glue line is ensured.

[0031] The side surface of the glue gun 12 is connected to a laser positioning light 18 via a bracket. The end of the lead screw 8 is equipped with a stepper motor 11, which has its own electromagnetic locking device. The support base 7 is equipped with a guide rod 10, which is slidably connected to the threaded sleeve 9.

[0032] A vision camera 19 is mounted on the inner bottom surface of the gantry 5, and the vision camera 19 is electrically connected to the main integrated controller via wires.

[0033] Laser positioning and vision system: The laser positioning light 18 is fixed to the side of the glue gun 12 by a U-shaped bracket. Its beam is coaxial with the glue outlet of the gun head 13 and is projected onto the surface of the carton to form a mark for pre-alignment calibration before glue dispensing. The vision camera 19 is installed on the inner bottom surface of the gantry frame 5 by a bracket. Its field of view covers the working area of ​​the glue gun 12. The vision camera 19 acquires images every second and transmits them to the main integrated controller via Ethernet. The image processing algorithm extracts the glue outlet feature points and compares them with the mark of the laser positioning light 18. Then, a compensation command is generated to adjust the stepper motor 11 and the first electric cylinder 6 to achieve dynamic alignment.

[0034] A flow sensor is installed on the rubber delivery hose.

[0035] The flow sensor is connected in series in the middle of the glue delivery pipe and is connected by a flange to ensure no leakage; its signal output is connected to the main integrated controller through a shielded wire to monitor the glue flow in real time.

[0036] A second electric cylinder 20 is installed on the upper surface of the gantry frame 5, and a pressure roller 21 is installed on the telescopic end of the second electric cylinder 20.

[0037] Pressing mechanism: The second electric cylinder 20 is symmetrically installed on the upper surface of the gantry 5. The extension end of the cylinder is equipped with a lower pressure wheel 21. The distance between the wheel surface and the surface of the conveyor belt 4 can be adjusted by the stroke of the second electric cylinder 20, and continuous pressing is achieved in conjunction with the conveying action of the conveyor belt 4.

[0038] Lighting lamps 22 are installed on the inner side of the gantry frame 5.

[0039] Lighting lamp 22 is embedded on the inner side of gantry frame 5, and the light shines on the surface of the carton at a 45° angle to eliminate the reflection on the surface of the carton.

[0040] The conveying mechanism 2 consists of a conveying roller 3, a conveyor belt 4, and a conveying motor. The conveying roller 3 is installed inside the worktable 1, and the conveying motor is installed at the end of the conveying roller 3. The conveyor belt 4 is installed on the surface of the conveying roller 3.

[0041] The operating principle of a vision-aligned fully automatic carton gluing machine in this embodiment is as follows: The conveyor motor drives the conveyor roller 3 to rotate synchronously, which drives the conveyor belt 4 with a rubber coating to transport the carton to be glued at a set speed. When the front end of the carton triggers the photoelectric sensor (not shown) at the entrance of the workbench 1, the sensor sends a signal to the integrated controller (not shown). The controller immediately initiates the following coordinated actions: The second electric cylinder 20 drives the lower pressure roller 21 to descend, pressing the carton firmly onto the conveyor belt 4 to avoid positional displacement caused by the carton curling. Simultaneously, the lighting lamp 22 is turned on to illuminate the surface of the carton at a 45° angle, reducing the reflectivity to below 10% and providing a uniform lighting environment for visual recognition. The vision camera 19 installed on the bottom of the gantry 5 takes high-speed pictures of the carton entering the field of view and transmits the image data to the integrated controller in real time via gigabit Ethernet. The controller's built-in image processing algorithm extracts the feature points of the glue joint and determines its actual position coordinates. The laser positioning light 18 on the side of the glue gun 12 projects a coaxial laser line onto the surface of the carton, and its position precisely corresponds to the glue outlet of the gun head 13. The controller compares the visually recognized glue joint coordinates with the laser line position, calculates the alignment deviation in the horizontal and vertical directions, and adjusts the position of the glue gun 12 based on the deviation data. The integrated controller sends a linkage command to the gear pump 16 and the servo motor 15 of the glue gun 12 according to the carton material: the gear pump 16 speed-regulating motor starts, pressurizes the glue in the glue tank 17 to the set pressure, and delivers it to the glue gun 12 through the glue delivery tube. The servo motor 15 drives the internal screw 14 to rotate. The matching relationship between the lead and speed of the screw 14 ensures the stability of the glue dispensing volume. The flow sensor on the glue delivery tube continuously monitors the glue flow rate. When the detected flow deviation exceeds ±5%, the controller immediately adjusts the speed of the gear pump 16 and the servo motor 15 to ensure the glue line diameter.

[0042] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A vision-alignment type fully automatic carton gluing machine, comprising a worktable (1), characterized in that: The workbench (1) is equipped with a conveying mechanism (2). A gantry frame (5) is welded to the upper surface of the workbench (1). A first electric cylinder (6) is installed on the upper surface of the gantry frame (5). A support seat (7) is installed at the telescopic end of the first electric cylinder (6). A lead screw (8) is installed inside the support seat (7). A threaded sleeve (9) is threaded to the surface of the lead screw (8). The threaded sleeve (9) is welded to the side surface of the glue gun (12). A gun head (13) is threaded to the port of the glue gun (12). A screw (14) is installed inside the glue gun (12). A servo motor (15) is installed at the end of the screw (14). A gear pump (16) is connected to the glue gun (12) through a glue delivery pipe. A glue box (17) is connected to the gear pump (16) through a glue delivery pipe.

2. The fully automatic carton gluing machine with vision alignment as described in claim 1, characterized in that: The side surface of the glue gun (12) is connected to a laser positioning light (18) via a bracket. The end of the lead screw (8) is equipped with a stepper motor (11), and the stepper motor (11) has an electromagnetic locking device. The inside of the support base (7) is equipped with a guide rod (10), and the guide rod (10) is slidably connected to the threaded sleeve (9).

3. The fully automatic carton gluing machine with vision alignment as described in claim 2, characterized in that: A vision camera (19) is installed on the inner bottom surface of the gantry (5), and the vision camera (19) is electrically connected to the overall integrated controller via a wire.

4. The fully automatic carton gluing machine with vision alignment as described in claim 3, characterized in that: A flow sensor is installed on the glue delivery tube.

5. The fully automatic carton gluing machine with vision alignment according to claim 4, characterized in that: The upper surface of the gantry (5) is equipped with a second electric cylinder (20), and the telescopic end of the second electric cylinder (20) is equipped with a pressure wheel (21).

6. The fully automatic carton gluing machine with vision alignment according to claim 5, characterized in that: Lighting lamps (22) are installed on the inner side of the gantry frame (5).

7. The fully automatic carton gluing machine with vision alignment according to claim 6, characterized in that: The conveying mechanism (2) consists of a conveying roller (3), a conveyor belt (4) and a conveying motor. The conveying roller (3) is installed inside the worktable (1), and a conveying motor is installed at the end of the conveying roller (3). The conveyor belt (4) is installed on the surface of the conveying roller (3).

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