Dispensing device

Abstract

The present application relates to the technical field of glue dispensing equipment, and specifically to a glue dispensing device, wherein a base is provided with a first mounting surface and a second mounting surface disposed opposite to each other, the first mounting surface being used to mount a glue cartridge, a pipeline being formed inside the base, and the glue cartridge being connected to the pipeline; a detection component being used to detect the amount of glue remaining in the glue cartridge; a nozzle being mounted on the second mounting surface, and the nozzle being connected to the pipeline; a switch valve controlling the opening or closing of the nozzle; a weighing instrument being disposed at the bottom of the nozzle, and the weighing instrument being spaced apart from the nozzle so that the nozzle can dispense glue to a target workpiece located in the space; and a controller being used to control the switch valve to open when a suspected glue leakage is determined based on the amount of glue remaining detected by the detection component, and to discharge the glue in the glue cartridge from the nozzle to the weighing instrument, and then to determine whether glue leakage has occurred based on the data measured by the weighing instrument. The glue dispensing device of the present application can detect glue leakage in a timely manner and ensure the quality of glue dispensing.

Description

Technical Field

[0001] The present application relates to the technical field of glue dispensing equipment, and in particular to a glue dispensing device. Background Art

[0002] With the continuous development of intelligent manufacturing and industry, dispensing equipment is moving towards intelligence, automation, and precision. However, during the dispensing process, there are still cases of product contamination and quality degradation. Summary of the Invention

[0003] In view of this, the present application provides a glue dispensing device that helps to detect glue leakage in a timely manner, thereby improving product quality.

[0004] To solve the above technical problems, a technical solution adopted in the present application is to provide a dispensing device, which includes a base, a detection component, a nozzle, a switch valve, a weighing scale and a controller. The base is provided with a first mounting surface and a second mounting surface arranged opposite to each other, the first mounting surface being used to mount a rubber cartridge, and a pipeline is further formed inside the base, the rubber cartridge mounted on the first mounting surface being connected to the pipeline; the detection component is used to detect the remaining amount of glue in the rubber cartridge; the nozzle is mounted on the second mounting surface, and the nozzle is connected to the pipeline; the switch valve controls the opening or closing of the nozzle; the weighing scale is arranged at the bottom of the nozzle, and the weighing scale is arranged at a distance from the nozzle so that the nozzle dispenses glue to the target workpiece located at the distance; the controller is electrically connected to the detection component, the switch valve and the weighing scale, and the controller is used to control the switch valve to open when it is determined that suspected glue leakage has occurred based on the remaining glue amount detected by the detection component, and to discharge the glue in the rubber cartridge from the nozzle to the weighing scale, and then determine whether glue leakage has occurred based on the data measured by the weighing scale.

[0005] The beneficial effect is: different from the prior art, the present application provides a dispensing device, which includes a base, a detection component, a nozzle, a switch valve, a weighing scale and a controller. The base is provided with a first mounting surface and a second mounting surface arranged opposite to each other. The first mounting surface is used to install a rubber cartridge. A pipeline is also formed inside the base, and the rubber cartridge is connected to the pipeline; the detection component is used to detect the remaining amount of glue in the rubber cartridge; the nozzle is mounted on the second mounting surface, and the nozzle is connected to the pipeline; the switch valve controls the opening or closing of the nozzle; the weighing scale is arranged below the nozzle, and the weighing scale and the nozzle are spaced apart so that the nozzle dispenses glue to the target workpiece in the interval; the controller is electrically connected to the detection component, the switch valve and the weighing scale. The controller is used to control the switch valve to open when it is determined that suspected glue leakage has occurred based on the remaining glue amount detected by the detection component, and to discharge the glue in the rubber cartridge from the nozzle to the weighing scale, and then determine whether glue leakage has occurred based on the data measured by the weighing scale. This application combines the results of the detection component and the weighing instrument to confirm the glue leakage results, which can ensure that whether glue leakage occurs is accurately discovered, and a timely response is made to reduce pollution to the product and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0007] Figure 1 This is a schematic structural diagram of a dispensing device in one embodiment of the present application;

[0008] Figure 2 yes Figure 1 A magnified schematic diagram of area A in the middle. DETAILED DESCRIPTION

[0009] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0010] It should be noted that the terms "first" and "second" in this application are only used for descriptive purposes and should not be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0011] In one embodiment of the present application, refer to Figure 1 The dispensing device 10 includes a base 100, a detection component 300, a nozzle 400, a switch valve 500, a weighing instrument 600 and a controller (not shown in the figure).

[0012] The base 100 is provided with a first mounting surface 101 and a second mounting surface 102, which are disposed opposite each other. Specifically, the first mounting surface 101 is located opposite the second mounting surface 102. The first mounting surface 101 is used to mount the rubber cartridge 200. During the dispensing process, when the glue in the rubber cartridge 200 is used up, a new rubber cartridge 200 can be mounted on the first mounting surface 101. A pipe 103 is also formed within the base 100. The rubber cartridge 200 mounted on the first mounting surface 101 is connected to the pipe 103, allowing the glue in the rubber cartridge 200 to flow out of the rubber cartridge 200 into the pipe 103. The detection assembly 300 is used to detect the remaining amount of glue in the rubber cartridge 200. The detection assembly 300 can detect the remaining amount of glue in the rubber cartridge 200 in real time or at preset time intervals. The nozzle 400 is mounted on the second mounting surface 102 and is connected to the pipeline 103. The glue flowing from the rubber cartridge 200 into the pipeline 103 is then ejected through the nozzle 400. The on-off valve 500 controls the opening and closing of the nozzle 400. When the nozzle 400 is open, glue is ejected from the nozzle 400. When the nozzle 400 is closed, the glue is not ejected and remains in the pipeline 103 or the rubber cartridge 200. A weighing scale 600 is disposed at the bottom of the nozzle 400. The weighing scale 600 is spaced apart from the nozzle 400, that is, the weighing scale 600 and the nozzle 400 are separated by a distance. This facilitates the nozzle 400 to dispense glue to the target workpiece 120 located at the interval. It will be understood that during the dispensing process, multiple target workpieces 120 are sequentially transported to the bottom of the nozzle 400, so that the dispensing device 10 dispenses glue to the target workpieces 120.

[0013] The controller is electrically connected to the detection component 300, the switch valve 500, and the weighing scale 600. That is, the controller can control the detection component 300, the switch valve 500, and the weighing scale 600. Specifically, the controller is used to: when it is determined that there is suspected glue leakage based on the remaining glue amount detected by the detection component 300, control the switch valve 500 to open, and discharge the glue in the glue cylinder 200 from the nozzle 400 to the weighing scale 600, and then determine whether glue leakage occurs based on the data measured by the weighing scale 600.

[0014] Specifically, when suspected glue leakage is initially discovered through the detection component 300, considering that the weighing scale 600 is always under the nozzle 400, and if glue leakage occurs, the glue will inevitably drip onto the weighing scale 600, in order to reduce misjudgment, after the preliminary judgment that there is suspected glue leakage, the weighing scale 600 is used to further confirm whether glue leakage has occurred, that is, a re-inspection is performed, which can improve the accuracy of the judgment, effectively monitor the glue leakage phenomenon of the dispensing device 10, and promptly stop the continued glue dispensing behavior, reduce the contamination of the target workpiece 120, and improve the quality of the product.

[0015] It should be noted that when re-inspection is required using the weighing scale 600, the target workpiece 120 is stopped from being transported to the bottom of the nozzle 400 in sequence. That is to say, when re-inspection is performed using the weighing scale 600, there is no target workpiece 120 between the nozzle 400 and the weighing scale 600. At this time, the glue sprayed from the nozzle 400 directly drips onto the weighing scale 600.

[0016] In one embodiment of the present application, the controller is specifically used to: after the glue in the rubber cylinder 200 is discharged onto the weighing scale 600, obtain the current data measured by the weighing scale 600, and calculate the absolute value of the difference between the current data and the most recently obtained historical data of the weighing scale 600, and determine that glue leakage has occurred in response to the absolute value being greater than a first threshold.

[0017] Specifically, the weighing machine 600 performs weighing only after the nozzle 400 has discharged glue normally. The current data refers to the weight measured by the weighing machine 600 after the current glue is discharged onto the weighing machine 600. The most recently acquired historical data of the weighing machine 600 refers to the weight measured by the weighing machine 600 during the last glue discharge. Therefore, the absolute value of the difference between the current data and the most recently acquired historical data of the weighing machine 600 represents the weight of the glue dripped onto the weighing machine 600 between the last measurement and the most recent measurement.

[0018] The first threshold value refers to the maximum weight of glue normally discharged by the nozzle 400. Therefore, if there is no glue leakage, the weight of glue dripping onto the weighing scale 600 should not exceed the first threshold value because the nozzle 400 has only discharged glue once between the last and most recent measurements. If the weight of the discharged glue exceeds the first threshold value, it indicates that in addition to the normal glue discharge from the nozzle 400, glue has also been leaked onto the weighing scale 600, indicating glue leakage. If the weight of the discharged glue is within the first threshold value, there is no glue leakage.

[0019] In one embodiment, the controller is specifically configured to: determine that a suspected glue leakage phenomenon occurs when it is determined that the glue level in the glue cylinder 200 decreases faster than a first speed threshold according to the remaining glue amount detected by the detection component 300 .

[0020] Specifically, the first speed threshold refers to the maximum speed at which the glue level drops when no glue leakage occurs. Therefore, if the glue level in the rubber cylinder 200 drops faster than the first speed threshold, a preliminary judgment of glue leakage can be made. However, due to the stickiness of the glue in the rubber cylinder 200, glue may cling to the wall during its descent. Therefore, false detection of glue leakage based solely on whether the glue level drops faster than the first speed threshold is likely to occur, necessitating subsequent re-inspection using the weighing scale 600.

[0021] In one embodiment, each time the nozzle 400 discharges glue, the detection component 300 detects the amount of glue remaining in the glue cylinder 200, which can quickly respond to suspected glue leakage in the glue dispensing device 10.

[0022] In one embodiment, the controller is specifically used to: obtain the current remaining glue amount in the glue barrel 200 after the nozzle 400 completes the dispensing of a single target workpiece 120, and determine the absolute value of the difference between the current remaining glue amount and the historical remaining glue amount as the falling speed of the glue level, wherein the historical remaining glue amount is the remaining glue amount in the glue barrel 200 before dispensing the single target workpiece 120.

[0023] Specifically, after completing the dispensing of a single target workpiece 120 , the absolute value of the difference between the current remaining glue amount and the historical remaining glue amount is obtained to determine the falling speed of the glue level, so as to timely determine whether there is glue leakage.

[0024] In one embodiment of the present application, the controller is specifically used to: when it is determined that the falling speed of the glue level in the rubber cylinder 200 is greater than a second speed threshold based on the remaining glue amount detected by the detection component 300, it is determined that glue leakage has occurred, wherein the second speed threshold is greater than the first speed threshold.

[0025] Specifically, if the rate of decrease of the glue level in the rubber cylinder 200 exceeds the second speed threshold, which in turn exceeds the first speed threshold, it indicates that the glue level in the rubber cylinder 200 is decreasing too rapidly, and a leak is immediately confirmed, eliminating the need for further confirmation using the scale 600. This reduces the number of steps required to confirm a leak and improves leak confirmation efficiency. If the rate of decrease of the glue level in the rubber cylinder 200 exceeds the first speed threshold but is less than the second speed threshold, a suspected leak is determined, and a subsequent recheck using the scale 600 is performed.

[0026] Of course, in other embodiments, as long as the falling speed of the glue level in the rubber cylinder 200 is greater than the first speed threshold, it is determined that a suspected glue leakage phenomenon has occurred, and a subsequent re-inspection is performed using the weighing instrument 600. In this case, the second speed threshold is not set.

[0027] In one embodiment of the present application, continue to refer to Figure 1 The glue dispensing device 10 further includes an air inlet valve 800, which is used to control the gas entering the rubber cylinder 200 and detect the air pressure inside the rubber cylinder 200. That is, the air inlet valve 800 can not only control the gas entering the rubber cylinder 200, but also monitor the air pressure inside the rubber cylinder 200. Among them, the controller is further electrically connected to the air inlet valve 800, and the controller can control the air inlet valve 800, and the detection result of the air inlet valve 800 can be monitored by the controller. The controller is also used to: when it is detected that the air pressure detected by the air inlet valve 800 is not within a preset range, determine that glue leakage has occurred. Specifically, if glue leakage has not occurred, the air pressure inside the rubber cylinder 200 should be within a preset normal range. If glue leakage has occurred, the air pressure inside the rubber cylinder 200 will change. Therefore, whether glue leakage has occurred can be monitored based on the air pressure inside the rubber cylinder 200.

[0028] In this embodiment, the detection of glue leakage is further combined with the air pressure detected by the air intake valve 800, which can further ensure the timeliness of the detection. Of course, in other embodiments, the detection can also be performed without combining the air pressure detected by the air intake valve 800, which is not limited here.

[0029] In one embodiment, the controller is further used to: after detecting that the glue in the glue cartridge 200 has been used up, determine the total number of target workpieces 120 that are dispensed using the glue in the glue cartridge 200, and determine that glue leakage has occurred in response to the total number being lower than the target number, wherein the target number is the theoretical total number of target workpieces 120 that are dispensed using the glue in the glue cartridge 200.

[0030] Specifically, the theoretical weight of glue applied to each target workpiece 120 is fixed and generally within a certain range. The weight of glue within the glue cartridge 200 is also fixed and also within a certain range. Therefore, the theoretical total number of target workpieces 120 that can be dispensed using the glue within the glue cartridge 200 can be predetermined. If the total number of target workpieces 120 dispensed using the glue within the glue cartridge 200 is less than the target number, it can be determined that some glue did not drip onto the target workpieces 120, and thus, glue leakage has occurred. If the total number of target workpieces 120 dispensed using the glue within the glue cartridge 200 is not less than the target number, it indicates that substantially all of the glue within the glue cartridge 200 has dripped onto the target workpieces 120, and no glue leakage has occurred.

[0031] That is, in this embodiment, the total number of target workpieces 120 dispensed with glue in the glue cartridge 200 is further combined to determine whether glue leakage occurs, thereby further ensuring the timeliness of detection. Of course, in other embodiments, the total number of target workpieces 120 may not be combined to make the determination.

[0032] In one embodiment, the controller is further configured to obtain a first weight of the glue applied to a single target workpiece 120 as measured by the scale 600, and determine a target quantity based on the total weight of the glue in the rubber cartridge 200 and the first weight. Specifically, the glue applied to the single target workpiece 120 is dripped onto the scale 600, thereby measuring the first weight. The target quantity is then determined by calculating the ratio of the total weight of the glue in the rubber cartridge 200 (the total weight is typically indicated on the rubber cartridge 200) to the first weight.

[0033] In one embodiment, the dispensing device 10 further includes a display device (not shown in the figure). The display device can be a liquid crystal display (LCD) or an organic light-emitting diode display (OLED). The present application does not impose too many restrictions on the type of display device, as long as it can display information. The display device is connected to the controller. When the controller determines that a glue leakage phenomenon has occurred, a prompt message is generated and sent to the display device for display. When the staff finds that the prompt message is displayed on the display device, they can promptly control the dispensing device 10.

[0034] In one embodiment, the dispensing device 10 also includes an alarm device, which is electrically connected to the controller. When the controller determines that glue leakage has occurred, the alarm device issues an alarm prompt. The alarm device can allow staff to receive the alarm prompt more quickly and respond to the leakage more quickly.

[0035] In one embodiment, the dispensing device 10 also includes a remote monitoring device, which is connected to the controller. When the controller determines that glue leakage has occurred, it generates a prompt message and sends the prompt message to the remote monitoring device. When the staff is not on site, the remote monitoring device can monitor the working status of the dispensing device 10, so that the staff can control the dispensing device 10 remotely and manage the glue leakage of the dispensing device 10 in a timely manner.

[0036] In one embodiment of the present application, Figure 2 The detection component 300 includes an ultrasonic multi-band sensor 130. The ultrasonic multi-band sensor 130 is a sensor that uses ultrasonic characteristics for measurement. It has high precision, high resolution and wide applicability and can accurately detect the liquid level of the glue in the rubber cylinder 200.

[0037] In other embodiments, the detection component 300 may include other sensors, which are not limited in this application. It only needs to be able to measure the liquid level of the glue in the glue cylinder 200.

[0038] In one embodiment, continue to refer to Figure 2 The dispensing device 10 also includes a fixed bracket 110, which is connected to the base 100 and is used to fix the rubber cylinder 200 to ensure the stability of the rubber cylinder 200 installed on the first mounting surface 101. The material of the fixed bracket 110 includes at least one of metal and plastic, wherein the ultrasonic multi-band is set on the fixed bracket 110.

[0039] In one embodiment, see Figure 2 The ultrasonic multi-band sensor 130 includes a plurality of probe points 301, which are evenly spaced along the length of the rubber cylinder 200. That is, the distribution of the probe points 301 extends from the lowest liquid level of the glue to the highest liquid level, ensuring that any liquid level of the glue in the rubber cylinder 200 can be detected.

[0040] In other implementations, the plurality of detection points 301 may not be evenly arranged.

[0041] In one embodiment, if Figure 1 The switch valve 500 is mounted on the base 100 and is connected to a fixing bracket 110, which is used to fix the rubber cartridge 200. When the switch valve 500 is open, the nozzle 400 opens and glue is sprayed out. When the switch valve 500 is closed, the nozzle 400 closes and no glue is sprayed out. The switch valve 500 can achieve a fixed frequency of glue spraying, thereby completing the dispensing process.

[0042] In one embodiment, the on-off valve 500 comprises a piezoelectric valve. This valve utilizes the expansion and contraction of the functional ceramic sheet under the influence of an electric field to switch the direction of movement of the colloid. When the functional ceramic sheet contracts, the nozzle 400 opens, discharging the glue. When the functional ceramic sheet expands, the nozzle 400 closes, and no glue is discharged. It should be noted that this application does not limit the specific type of on-off valve 500; as long as the on-off valve 500 can control the opening and closing of the nozzle 400, it is sufficient.

[0043] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A dispensing device, characterized in that: The dispensing device comprises: The base is provided with a first mounting surface and a second mounting surface disposed opposite to each other, the first mounting surface being used to mount the rubber cartridge, and a pipeline is further formed inside the base, the rubber cartridge mounted on the first mounting surface being in communication with the pipeline; A detection component, used for detecting the remaining amount of glue in the glue cylinder; a nozzle mounted on the second mounting surface, the nozzle being in communication with the pipeline; A switch valve controls the opening or closing of the nozzle; a weighing instrument, disposed at the bottom of the nozzle, the weighing instrument being spaced apart from the nozzle so that the nozzle can dispense glue to a target workpiece located at the spaced apart position; a controller electrically connected to the detection component, the switch valve, and the weighing instrument, the controller being configured to: when a suspected glue leakage phenomenon is determined based on the remaining glue amount detected by the detection component, control the switch valve to open, and cause the glue in the glue cylinder to be discharged from the nozzle onto the weighing instrument, and then determine whether the glue leakage phenomenon occurs based on the data measured by the weighing instrument; Among them, the controller is specifically used to: after the glue in the glue cylinder is discharged onto the weighing instrument, obtain the current data measured by the weighing instrument, and calculate the absolute value of the difference between the current data and the historical data of the weighing instrument obtained most recently. In response to the absolute value being greater than a first threshold, it is determined that glue leakage has occurred. The first threshold refers to the maximum weight of glue discharged normally by the nozzle once.

2. The dispensing device according to claim 1, characterized in that: The controller is specifically configured to determine that a suspected glue leakage phenomenon occurs when it is determined that a drop speed of the glue level in the glue cylinder is greater than a first speed threshold according to the remaining glue amount detected by the detection component.

3. The dispensing device according to claim 2, characterized in that: The controller is specifically used to: obtain the current remaining glue amount in the glue barrel after the nozzle completes the dispensing of a single target workpiece, and determine the absolute value of the difference between the current remaining glue amount and the historical remaining glue amount as the liquid level drop rate of the glue, wherein the historical remaining glue amount is the remaining glue amount in the glue barrel before dispensing the single target workpiece.

4. The dispensing device according to claim 2, characterized in that: The controller is specifically used to: determine that glue leakage occurs when it is determined that the liquid level drop speed of the glue in the glue cylinder is greater than a second speed threshold based on the remaining glue amount detected by the detection component, wherein the second speed threshold is greater than the first speed threshold.

5. The dispensing device according to claim 1, characterized in that: The dispensing device also includes: An air intake valve is used to control the gas entering the rubber cylinder and detect the air pressure in the rubber cylinder; wherein the controller is further electrically connected to the air intake valve, and the controller is also used to: when it is detected that the air pressure detected by the air intake valve is not within a preset range, determine that a rubber leakage phenomenon has occurred.

6. The dispensing device according to claim 1, characterized in that: The controller is also used to: after detecting that the glue in the glue cartridge has been used up, determine the total number of the target workpieces that are dispensed using the glue in the glue cartridge, and in response to the total number being lower than a target number, determine that glue leakage has occurred, wherein the target number is the theoretical total number of the target workpieces that are dispensed using the glue in the glue cartridge.

7. The dispensing device according to claim 6, characterized in that: The controller is further configured to obtain a first weight of the glue on a single target workpiece measured by the weighing instrument, and determine the target quantity based on the total weight of the glue in the glue cylinder and the first weight.

8. The dispensing device according to claim 1, characterized in that: The dispensing device also includes: The display device is connected to the controller. When the controller determines that glue leakage occurs, it generates prompt information and sends the prompt information to the display device for display.

9. The dispensing device according to claim 1, characterized in that: The dispensing device also includes: The alarm device is electrically connected to the controller, and when the controller determines that glue leakage occurs, the alarm device issues an alarm prompt.

10. The dispensing device according to claim 1, characterized in that: The dispensing device also includes: The remote monitoring device is connected to the controller. When the controller determines that glue leakage occurs, it generates prompt information and sends the prompt information to the remote monitoring device.

11. The dispensing device according to claim 1, characterized in that: The detection component includes an ultrasonic multi-band sensor.

12. The dispensing device according to claim 11, characterized in that: The dispensing device further includes: a fixing bracket connected to the base and used to fix the glue cylinder, wherein the ultrasonic multi-band is arranged on the fixing bracket.

13. The dispensing device according to claim 11, characterized in that: The ultrasonic multi-band sensor includes a plurality of probe points, which are evenly spaced along the length of the rubber cylinder.

14. The dispensing device according to claim 1, characterized in that: The switch valve is installed on the base, and the switch valve is connected to a fixing bracket, which is used to fix the rubber cylinder.

15. The dispensing device according to claim 1, characterized in that: The switching valve includes a piezoelectric valve.

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