Glue spraying position detection device and glue spraying apparatus

Abstract

The application provides a glue spraying in-place detection device and a glue spraying equipment, comprising: a base; a position sensor arranged on the base, an induction area of the position sensor corresponding to a preset glue spraying completion position, and being configured to trigger and generate an in-place signal when a glue gun assembly swings to the glue spraying completion position; and a controller electrically connected with the position sensor, the controller being configured to determine whether the glue spraying action is executed in place according to whether the in-place signal is received within a preset detection window time. The application can indirectly, efficiently and reliably determine whether the glue spraying is successful by detecting the mechanical position of the glue gun assembly.

Description

Technical Field

[0001] This application relates to the field of adhesive spraying technology, and in particular to an adhesive spraying accuracy detection device and adhesive spraying equipment. Background Technology

[0002] In the field of carton packaging (especially cigarette carton packaging), to achieve a sealed carton, hot melt adhesive dots need to be precisely sprayed onto predetermined positions on the carton paper using a reciprocating glue gun. The successful application of these adhesive dots directly determines the sealing quality of the carton. If adhesive dots are missed, the glue gun becomes clogged, or spraying failures are not detected in time, the carton will not be securely sealed, resulting in a defective product. This not only affects the product's appearance and quality but may also cause jams during subsequent transport, leading to production line downtime.

[0003] Currently, the commonly used techniques for detecting whether adhesive dots have been successfully applied are manual visual inspection and machine vision inspection. Manual visual inspection relies on operators performing periodic spot checks, which is unreliable, labor-intensive, and unsuitable for the high-speed production line requirement of inspecting every single product, easily leading to missed detections. Machine vision inspection, which involves capturing and analyzing adhesive dot images using industrial cameras, achieves automation and full inspection, but its system cost is high and it is extremely sensitive to environmental conditions (such as lighting conditions and dust interference). Therefore, there is an urgent need in this field for a cost-effective, fast-responding, and highly reliable device for detecting the success of adhesive dot application. Utility Model Content

[0004] This application provides a glue spraying position detection device and a glue spraying equipment, which can indirectly, efficiently and reliably determine whether glue spraying is successful by detecting the mechanical position of the glue gun assembly. This effectively solves the problems of high cost, slow speed or susceptibility to interference in traditional detection methods, and significantly improves production quality and efficiency.

[0005] The first aspect of this application provides a glue spraying arrival detection device, including: a base;

[0006] A position sensor is disposed on the base. The sensing area of ​​the position sensor corresponds to a preset glue spraying completion position and is configured to trigger and generate a positioning signal when the glue gun assembly swings to the glue spraying completion position.

[0007] The controller is electrically connected to the position sensor and is configured to determine whether the glue spraying action has been performed correctly based on whether the position signal is received within a preset detection window time.

[0008] In one embodiment, a rejection actuator is further included, which is electrically connected to the controller; the controller is configured to output a rejection signal to the rejection actuator if the arrival signal is not received within a preset detection window time.

[0009] In one embodiment, the rejection actuator includes a cylinder, a solenoid valve, and a swing arm;

[0010] The solenoid valve is electrically connected to the controller and is used to receive the rejection signal and switch the on / off state; the cylinder is connected to the solenoid valve and is controlled by the solenoid valve to intake or exhaust air.

[0011] One end of the swing arm is connected to the piston rod of the cylinder, and the other end of the swing arm is a free end; the cylinder is configured to drive the swing arm to swing through the piston rod when air is intake, so as to remove the strips that have not been glued.

[0012] In one embodiment, the position sensor includes a first position sensor and a second position sensor; the first position sensor is disposed on a first base, and the second position sensor is disposed on a second base;

[0013] The sensing area of ​​the first position sensor corresponds to the preset glue spraying completion position;

[0014] The sensing area of ​​the second position sensor corresponds to the standby position or the glue spraying start position of the glue gun assembly;

[0015] The controller is electrically connected to both the first position sensor and the second position sensor. The controller is configured to determine that the glue spraying action has been completed when it receives the position signal from the first position sensor and the position signal from the second position sensor disappears.

[0016] In one embodiment, the first position sensor is an inductive or magnetic proximity switch; and / or, the second position sensor is an inductive or magnetic proximity switch.

[0017] In one embodiment, a trajectory sensor is further included, the sensing area of ​​which corresponds to the movement trajectory of the glue gun assembly and is electrically connected to the controller;

[0018] The controller is configured to generate the actual motion trajectory of the glue gun assembly based on the real-time position data fed back by the trajectory sensor, and compare the actual motion trajectory with the pre-stored standard motion trajectory; when the actual motion trajectory deviates from the standard motion trajectory, a fault signal is output.

[0019] In one embodiment, a temperature detector is also included, which is electrically connected to the controller;

[0020] The temperature detector is configured to monitor the actual temperature at the glue spraying completion location, and the controller is configured to receive the actual temperature and compare the actual temperature with a pre-stored standard temperature.

[0021] When the actual temperature is lower than the standard temperature, a fault signal indicating insufficient adhesive is output.

[0022] When the actual temperature is higher than the standard temperature, an overheat warning signal is output.

[0023] In one embodiment, a telescopic bracket is further included, which is disposed on the base; the position sensor is mounted at the end of the telescopic bracket, and the telescopic bracket is configured to move the position sensor closer to or away from the glue gun assembly to adjust the relative position of the sensing area.

[0024] A second aspect of this application provides a glue spraying device, including a glue gun assembly and a glue spraying position detection device.

[0025] In one embodiment, the glue gun assembly includes a drive cylinder and a glue gun bearing, the glue gun bearing being connected to the drive end of the drive cylinder;

[0026] During the swinging process, the glue gun bearing passes through multiple preset glue dot areas in sequence and sprays glue; the sensing area of ​​the position sensor of the glue spraying position detection device corresponds to the glue spraying completion position that the glue gun bearing should reach after completing the glue spraying of all preset glue dot areas.

[0027] The glue spraying position detection device and glue spraying equipment provided in this application embodiment, by setting a position sensor and a controller to work together, automatically determine the execution status of the glue spraying action based on whether the glue gun component reaches the glue spraying completion position within a preset time window. Thus, by detecting the position of the glue gun, it is confirmed whether the glue has been successfully applied. It has the advantages of simple operation, fast response speed, strong anti-interference and low cost, and improves the automation level of the production line and the product qualification rate. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the position sensor of the glue spraying detection device provided in the embodiments of this application.

[0030] Figure 2 This is a schematic diagram of the structure of the second position sensor and the second sensing area of ​​the glue spraying position detection device provided in the embodiments of this application.

[0031] Figure 3 This is a schematic diagram of the structure of the first position sensor and the first sensing area of ​​the glue spraying position detection device provided in the embodiments of this application.

[0032] Figure label:

[0033] 110. First base; 120. Second base;

[0034] 210. First position sensor; 211. First sensing area; 220. Second position sensor; 221. Second sensing area;

[0035] 310. First telescopic support; 320. Second telescopic support;

[0036] 410. Drive cylinder; 420. Glue gun bearing;

[0037] 510. Carton paper; 520. Glue dot area. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0042] In the field of carton packaging (especially cigarette carton packaging), to achieve a sealed carton, hot melt adhesive dots need to be precisely sprayed onto predetermined positions on the carton paper using a reciprocating glue gun. The successful application of these adhesive dots directly determines the sealing quality of the carton. If adhesive dots are missed, the glue gun becomes clogged, or spraying failures are not detected in time, the carton will not be securely sealed, resulting in a defective product. This not only affects the product's appearance and quality but may also cause jams during subsequent transport, leading to production line downtime.

[0043] Currently, the commonly used techniques for detecting whether adhesive dots have been successfully applied are manual visual inspection and machine vision inspection. Manual visual inspection relies on operators performing periodic spot checks, which is unreliable, labor-intensive, and unsuitable for the high-speed production line requirement of inspecting every single product, easily leading to missed detections. Machine vision inspection, which involves capturing and analyzing adhesive dot images using industrial cameras, achieves automation and full inspection, but its system cost is high and it is extremely sensitive to environmental conditions (such as lighting conditions and dust interference). Therefore, there is an urgent need in this field for a cost-effective, fast-responding, and highly reliable device for detecting the success of adhesive dot application.

[0044] To address the aforementioned issues, this application provides a glue spraying position detection device and a glue spraying equipment. By setting a position sensor and a controller to work together, the device automatically determines the glue spraying action based on whether the glue gun assembly reaches the glue spraying completion position within a preset time window. Thus, by detecting the position of the glue gun, it confirms whether the glue has been successfully applied. This device has the advantages of simple operation, fast response speed, strong anti-interference ability, and low cost, thereby improving the automation level of the production line and the product qualification rate.

[0045] Reference Figures 1 to 3 As shown, this application provides a glue spraying device, including a glue gun assembly and a glue spraying position detection device. The glue gun assembly may include a drive cylinder 410 and a glue gun bearing 420, with the glue gun bearing 420 connected to the drive end of the drive cylinder 410. During the swinging process, the glue gun bearing 420 sequentially passes through multiple preset glue dot areas 520 and sprays glue. The sensing area of ​​the position sensor of the glue spraying position detection device corresponds to the glue spraying completion position that the glue gun bearing 420 should reach after spraying glue to all preset glue dot areas 520.

[0046] In this embodiment, the sensing area of ​​the position sensor refers to a specific and limited space in front of the sensor. When the glue gun bearing 420 or the triggering component provided on it, such as a metal baffle, enters this space, it will cause the electrical characteristics inside the sensor to change, thereby triggering the position signal.

[0047] A “position signal” can be a transition from one state to another, such as from nothing to something, or from a low level to a high level. This embodiment does not limit this.

[0048] In this embodiment, the preset adhesive dot area 520 refers to the specific location and range on the strip box paper 510 where adhesive needs to be applied, which is pre-set in the controller according to process requirements.

[0049] The following will combine Figures 1 to 3 The specific structure of the glue spraying arrival detection device provided in the embodiments of this application will be described.

[0050] This application provides a glue spraying completion detection device, including a base and a position sensor. The position sensor is disposed on the base, and the sensing area of ​​the position sensor corresponds to a preset glue spraying completion position. It is configured to trigger and generate a completion signal when the glue gun assembly swings to the glue spraying completion position.

[0051] The controller, electrically connected to the position sensor, is configured to determine whether the glue spraying action has been performed correctly based on whether a position signal is received within a preset detection window.

[0052] In this embodiment, refer to Figure 1 As shown, the "glue spraying completion position" refers to the following: For example, suppose a carton needs to be sprayed with glue at three positions: A, B, and C. The glue gun bearing 420 starts from the standby position A, swings to spray glue at point B, and finally swings to spray glue at point C. After spraying glue at point C, the glue gun bearing 420 does not stop immediately, but continues to swing forward at a small angle to reach a final, preset point D. This point D is the "glue spraying completion position".

[0053] The position sensor can be installed near point D. The position sensor will only be triggered and the glue gun will be considered successfully sprayed if the glue gun bearing 420 has completed the entire journey from A→B→C and finally reached point D. If it gets stuck at point B or C due to any malfunction, it will not reach point D, the position sensor will not be triggered, and the system will determine that the glue spraying has failed and issue an alarm. Therefore, reaching point D (the glue spraying completion position) signifies that the entire glue spraying action has been successfully completed.

[0054] Understandably, setting the detection point at a more distant point D ensures that the piston of the drive cylinder 410 has completed its entire working stroke completely and stably, which helps reduce false alarms.

[0055] In this embodiment, the "preset detection window time" refers to a preset, limited time period that begins after the controller drives the glue gun to start the glue spraying action. During this time period, the controller specifically monitors whether the position detector sends a positioning signal.

[0056] In one embodiment, a rejection actuator may also be included, which is electrically connected to the controller; the controller is configured to output a rejection signal to the rejection actuator if it does not receive a position signal within a preset detection window time.

[0057] For example, the rejection actuator can be a pneumatic rejection device or an electric rejection device, and this embodiment does not limit it.

[0058] Therefore, by setting up rejection actuators, automatic online sorting can be achieved after glue spraying failures, effectively preventing unqualified products from flowing into subsequent processes, thereby improving production efficiency while ensuring product quality consistency.

[0059] In one embodiment, the rejection actuator may include a cylinder, a solenoid valve, and a swing arm; wherein the solenoid valve is electrically connected to a controller for receiving rejection signals and switching on / off states; the cylinder is connected to the solenoid valve, which controls its intake or exhaust; one end of the swing arm is connected to the piston rod of the cylinder, and the other end of the swing arm is a free end; the cylinder is configured to drive the swing arm to swing through the piston rod when intake, so as to reject strips that have not been glued.

[0060] Specifically, after the controller determines that the glue application has failed, it sends an electrical signal (rejection signal) to the solenoid valve. The solenoid valve then switches the air path, directing compressed air into the intake chamber of the cylinder, which drives the piston rod to extend or retract rapidly. The linear motion of the piston rod is directly converted into the rotational swing of the swing arm, which uses the free end of the swing arm to accurately and quickly reject the un-glued strips from the production line into the waste bin.

[0061] In some embodiments, when multiple "glue dot failures" occur consecutively, the controller can output a stop command to stop the packaging machine.

[0062] In one embodiment, reference Figures 1 to 3 As shown, the position sensor may include a first position sensor 210 and a second position sensor 220; the first position sensor 210 is disposed on the first base 110, and the second position sensor 220 is disposed on the second base 120.

[0063] The first sensing area 211 of the first position sensor 210 corresponds to the preset glue spraying completion position (e.g., Figure 1 and Figure 3 The second sensing area 221 of the second position sensor 220 can correspond to the standby position or the glue spraying start position of the glue gun assembly (e.g., the D position); Figure 1 and Figure 2 (Position A).

[0064] The controller is electrically connected to both the first position sensor 210 and the second position sensor 220. The controller is configured to determine that the glue spraying action has been completed when it receives the position signal from the first position sensor 210 and the position signal from the second position sensor 220 disappears.

[0065] For example: At the start of work: refer to Figure 2 As shown, when the glue gun is in standby position A, the second position sensor 220 is triggered (signal is received), while the first position sensor 210 has no signal. During operation: when the glue gun leaves the standby position, the signal from the second position sensor 220 disappears. Afterward, it sprays glue at points A, B, and C, but does not trigger any sensors. Upon completion: after spraying glue at point C, the glue gun continues to swing to the final glue-spraying completion position D (e.g., ...). Figure 3 At this time, the first position sensor 210 is triggered (there is a signal).

[0066] Therefore, in this embodiment, the glue spraying action is determined to be fully executed only when both conditions are met simultaneously: the first position sensor 210 has a signal and the second position sensor 220 has no signal. This helps ensure that the glue gun has left the standby position and reached the final position, effectively preventing misjudgments caused by sensor malfunctions (such as continuous signal or continuous no signal), and greatly improving the reliability of the detection system.

[0067] In one embodiment, the first position sensor 210 can be an inductive or magnetic proximity switch; the second position sensor 220 can also be an inductive or magnetic proximity switch. This embodiment does not limit this. This solution utilizes a non-contact detection principle, effectively avoiding mechanical wear and signal jitter, and significantly improving the long-term reliability and environmental adaptability of the dual-sensor collaborative determination.

[0068] In one embodiment, a trajectory sensor may also be included, the sensing area of ​​which corresponds to the movement trajectory of the glue gun assembly and is electrically connected to the controller; the controller is configured to generate the actual movement trajectory of the glue gun assembly based on the real-time position data fed back by the trajectory sensor, and compare the actual movement trajectory with a pre-stored standard movement trajectory; when the actual movement trajectory deviates from the standard movement trajectory, a fault signal is output.

[0069] For example, the trajectory sensor can be a drawstring encoder. This embodiment is not limited to this.

[0070] For example, under normal circumstances, the glue gun will pass through A, B, and C sequentially at preset time points at a steady speed, and finally reach D, forming a smooth and timely standard motion trajectory. If the glue gun drive mechanism is worn or poorly lubricated, although it will eventually reach point D, the entire motion process may become slow and jerky. In this case, the actual motion trajectory recorded by the trajectory sensor will deviate from the preset standard trajectory in terms of speed curve or position and time point.

[0071] Therefore, in this embodiment, even if the final arrival signal is normal, if the deviation between the actual trajectory and the standard trajectory exceeds the allowable range, the controller will output a fault signal. This helps to maintain the equipment in advance and avoid production interruptions.

[0072] In one embodiment, a temperature detector may also be included, which is electrically connected to the controller. The temperature detector is configured to monitor the actual temperature at the glue spraying completion position, and the controller is configured to receive the actual temperature and compare it with a pre-stored standard temperature. When the actual temperature is lower than the standard temperature, a fault signal indicating insufficient glue volume is output; when the actual temperature is higher than the standard temperature, a warning signal indicating overheating of the device is output.

[0073] For example, the successfully sprayed hot melt adhesive has a relatively high temperature, assuming a standard temperature of 150°C. If the actual temperature measured by the temperature detector is within the normal range (e.g., 145-155°C), the system determines it to be normal.

[0074] Abnormal Situation 1: If the glue path is slightly blocked or the glue is almost used up, the amount of glue sprayed onto the cartridge will be significantly reduced or completely absent. The heat from these glue dots (especially the last one) will dissipate rapidly, causing the actual temperature measured by the temperature detector at point D to be far below the standard temperature (e.g., only 80°C). In this case, the controller will output a fault signal indicating insufficient glue, even if the glue gun's mechanical action is correct.

[0075] Abnormal Situation 2: If the heating system malfunctions, causing the hot melt adhesive temperature to become excessively high, the temperature detector will measure an actual temperature far exceeding the standard range (e.g., reaching 180°C). Excessive temperature may affect adhesive performance or damage the packaging, and the controller will promptly output an overheat warning signal.

[0076] In one embodiment, reference Figures 1 to 3 As shown, it may also include a first telescopic bracket 310 and a second telescopic bracket 320, with the first telescopic bracket 310 disposed on the first base 110 and the second telescopic bracket 320 disposed on the second base 120.

[0077] The first position sensor 210 is mounted at the end of the first telescopic bracket 310. The first telescopic bracket 310 is configured to move the first position sensor 210 closer to or further away from the glue gun assembly to adjust the relative position of the first sensing area 211.

[0078] The second position sensor 220 is mounted at the end of the second telescopic bracket 320. The second telescopic bracket 320 is configured to move the second position sensor 220 closer to or further away from the glue gun assembly to adjust the relative position of the second sensing area 221.

[0079] This telescopic bracket allows for flexible adjustment of the detection distance of the position sensor, enabling the same detection device to quickly adapt to different models or wear conditions of glue guns, significantly improving the equipment's versatility and ease of maintenance.

[0080] This embodiment provides a glue spraying position detection device and a glue spraying equipment. By setting a position sensor and a controller to work together, the device automatically determines the glue spraying action based on whether the glue gun assembly reaches the glue spraying completion position within a preset time window. Thus, by detecting the position of the glue gun, it confirms whether the glue has been successfully applied. It has the advantages of simple operation, fast response speed, strong anti-interference ability and low cost, which improves the automation level of the production line and the product qualification rate.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A device for detecting the proper application of adhesive, characterized in that, include: Base; A position sensor is disposed on the base. The sensing area of ​​the position sensor corresponds to a preset glue spraying completion position and is configured to trigger and generate a positioning signal when the glue gun assembly swings to the glue spraying completion position. The controller is electrically connected to the position sensor and is configured to determine whether the glue spraying action has been performed correctly based on whether the position signal is received within a preset detection window time.

2. The adhesive spraying placement detection device according to claim 1, characterized in that, It also includes a rejection actuator, which is electrically connected to the controller; The controller is configured to output a rejection signal to the rejection actuator if it does not receive the arrival signal within a preset detection window time.

3. The adhesive spraying placement detection device according to claim 2, characterized in that, The rejection actuator includes a cylinder, a solenoid valve, and a swing arm; The solenoid valve is electrically connected to the controller and is used to receive the rejection signal and switch the on / off state; the cylinder is connected to the solenoid valve and is controlled by the solenoid valve to intake or exhaust air. One end of the swing arm is connected to the piston rod of the cylinder, and the other end of the swing arm is a free end; the cylinder is configured to drive the swing arm to swing through the piston rod when air is intake, so as to remove the strips that have not been glued.

4. The adhesive spraying placement detection device according to claim 1, characterized in that, The position sensor includes a first position sensor and a second position sensor, wherein the first position sensor is disposed on a first base and the second position sensor is disposed on a second base; The first sensing area of ​​the first position sensor corresponds to the preset glue spraying completion position; The second sensing area of ​​the second position sensor corresponds to the standby position or the glue spraying start position of the glue gun assembly; The controller is electrically connected to both the first position sensor and the second position sensor. The controller is configured to determine that the glue spraying action has been completed when it receives the position signal from the first position sensor and the position signal from the second position sensor disappears.

5. The adhesive spraying placement detection device according to claim 4, characterized in that, The first position sensor is an inductive or magnetic proximity switch; and / or, the second position sensor is an inductive or magnetic proximity switch.

6. The adhesive spraying placement detection device according to any one of claims 1-5, characterized in that, It also includes a trajectory sensor, the sensing area of ​​which corresponds to the movement trajectory of the glue gun assembly and is electrically connected to the controller; The controller is configured to generate the actual motion trajectory of the glue gun assembly based on the real-time position data fed back by the trajectory sensor, and compare the actual motion trajectory with a pre-stored standard motion trajectory; When the actual motion trajectory deviates from the standard motion trajectory, a fault signal is output.

7. The adhesive spraying placement detection device according to any one of claims 1-5, characterized in that, It also includes a temperature detector, which is electrically connected to the controller; The temperature detector is configured to monitor the actual temperature at the glue spraying completion location, and the controller is configured to receive the actual temperature and compare the actual temperature with a pre-stored standard temperature. When the actual temperature is lower than the standard temperature, a fault signal indicating insufficient adhesive is output. When the actual temperature is higher than the standard temperature, an overheat warning signal is output.

8. The adhesive spraying placement detection device according to any one of claims 1-5, characterized in that, It also includes a telescopic bracket, which is disposed on the base; The position sensor is mounted at the end of the telescopic bracket, which is configured to move the position sensor closer to or further away from the glue gun assembly to adjust the relative position of the sensing area.

9. A glue spraying device, characterized in that, It includes a glue gun assembly and a glue spraying position detection device as described in any one of claims 1-8.

10. The adhesive spraying equipment according to claim 9, characterized in that, The glue gun assembly includes a drive cylinder and a glue gun bearing, wherein the glue gun bearing is connected to the drive end of the drive cylinder. During the swinging process, the glue gun bearing passes through multiple preset glue dot areas in sequence and sprays glue; the sensing area of ​​the position sensor of the glue spraying position detection device corresponds to the glue spraying completion position that the glue gun bearing should reach after completing the glue spraying of all preset glue dot areas.

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