TWI854532B - A device for detecting glue amount - Google Patents

Abstract

A device for detecting glue amount, for detecting the amount of glue in a barrel of an automated robot dispenser, which has a cap module and an airway, the cap module being located in the barrel and on the top of glue, the airway being connected to the barrel to form an air space, the device comprising: a sensor module, being located away from the cap module and having a through hole; and a metal wire, being connected to the cap module in one end and located in the airway, wherein the sensor module shows the existence of glue amount when detecting the metal wire being in the through hole, wherein the sensor module shows lack of glue amount when detecting the metal wire being not in the through hole.

Description

A glue quantity monitoring device

The present invention relates to a glue quantity monitoring device, and more particularly to a device for detecting the amount of glue stored in an automatic glue dispensing device.

Generally speaking, in the existing technology, most of the electronic products involved in the production involve related glue dispensing processes. The current automatic robot dispenser uses a magnetic induction method to monitor the glue inventory and perform early warning actions. However, since the glue barrel in the automatic glue dispensing equipment is not light-transmissive, it is impossible to use an electronic sensor for detection. The existing magnetic induction method may be due to the distance or height of the glue barrel cover, which may easily lead to misjudgment during detection, or it may cause the sensing range to be too large, resulting in serious glue waste and other problems.

As mentioned above, the current method of monitoring the glue inventory in the automatic glue dispensing equipment may have the following disadvantages: 1. First, the sensitivity of the monitoring result of the glue inventory is too low, which often leads to a phenomenon of glue interruption, and the glue cannot be supplied in time, causing the problem of defective electronic products on the production line. 2. In addition, the accuracy of the monitoring result of the glue inventory is insufficient, which will cause a lot of glue to remain, resulting in serious waste of glue. 3. Furthermore, since the current design cannot monitor the glue inventory visually, it will cause the problem of insufficient glue preparation.

In view of the above-mentioned shortcomings in the prior art, the present invention proposes a design that can overcome these shortcomings.

The present invention solves the problems of the prior art by adopting a necessary technical means to provide a glue quantity monitoring device, which is applied to monitor the amount of glue in a glue barrel of an automatic glue dispensing device. The automatic glue dispensing device also has a glue barrel cover module and a pressure air pipe. The glue barrel cover module is arranged in the glue barrel and is located at the top of the glue, and the pressure air pipe is combined with the glue barrel to form a ventilation space. The glue quantity monitoring device is used to monitor the amount of glue in a glue barrel of an automatic glue dispensing device. The device comprises: a sensor module, which is arranged at a certain distance from the rubber barrel cover module and has a through hole, and the pressure air pipe passes through the through hole; and a metal wire, one end of which is combined with the rubber barrel cover module and arranged in the pressure air pipe; wherein, when the sensor module detects that the metal wire is located in the through hole, it is displayed that there is still glue in stock, and when the sensor module detects that the metal wire is not located in the through hole, it is displayed that there is no glue in stock.

In an auxiliary technical means derived from the above necessary technical means, the sensor module includes a sensor, a relay, and a low glue amount sensing alarm system. The sensor has a through hole, and the relay is connected to the sensor and the low glue amount sensing alarm system. The sensor transmits a signal to the relay, and the relay transmits a corresponding signal to the low glue amount sensing alarm system according to the signal. The low glue amount sensing alarm system displays the stock status of the glue according to the corresponding signal.

In an auxiliary technical means derived from the above necessary technical means, the low glue sensing alarm system includes a programmable logic controller and a display. The programmable logic controller is connected to the relay and the display. The programmable logic controller receives the corresponding signal and transmits it to the display. The display is used to display the stock status of the glue.

In an auxiliary technical means derived from the above necessary technical means, the sensor is a ring sensor.

As described above, since the glue quantity monitoring device of the present invention utilizes a sensor module to detect whether the metal wire is located in the through hole, so as to determine whether there is still glue in stock, the present invention can effectively display the situation that the glue in the glue barrel has been used up in this way.

The specific embodiments of the present invention will be further described by the following embodiments and drawings.

Please refer to the contents of Figures 1 to 3 in combination. Figure 1 is a schematic diagram showing the state of the glue quantity monitoring device provided by the preferred embodiment of the present invention when the glue is full; Figure 2 is a schematic diagram showing the state of the glue quantity monitoring device provided by the preferred embodiment of the present invention when the glue is used up; Figure 3 is a schematic diagram showing the sensor module of the glue quantity monitoring device provided by the preferred embodiment of the present invention.

As shown in the first and second figures, a glue quantity monitoring device is used to monitor the amount of glue 11 in a glue barrel 10 of an automatic glue dispensing device (not shown in the figure). The automatic glue dispensing device also has a glue barrel cover module and a pressure air pipe 30. The glue barrel cover module is arranged in the glue barrel 10 and is located at the top of the glue 11, and the pressure air pipe 30 is combined with the glue barrel 10 to form a ventilation space. Since the automatic glue dispensing device needs to rely on air pressure to discharge the glue 11 to perform glue dispensing, a pressure air pipe 30 needs to be provided above the glue barrel 10 to form a ventilation space, and the pressure air pipe 30 is usually a transparent tube.

The rubber quantity monitoring device of the present invention comprises: a sensor module, which is arranged at a certain distance from the rubber barrel cover module and has a through hole 22, and a pressure air pipe 30 passes through the through hole 22.

The rubber quantity monitoring device of the present invention further comprises: a metal wire 40, one end of which is combined with the rubber barrel cover module and is disposed in the pressure air pipe 30.

Among them, the plastic barrel cover module as described above in the preferred embodiment of the present invention includes: a plastic barrel metal cover 12, and a magnet 13. The magnet 13 is attached to the plastic barrel metal cover 12 and the metal wire 40, and the magnet 13 is arranged on the side without the glue 11. That is, one end of the metal wire 40 is connected to the magnet 13, and the magnet 13 is adsorbed on the plastic barrel metal cover 12 of the plastic barrel 10, and the metal wire 40 is inserted into the pressure air pipe 30.

When the sensor module detects that the metal wire 40 is located in the through hole 22, it indicates that there is still glue 11; and when the sensor module detects that the metal wire 40 is not located in the through hole 22, it indicates that there is no glue 11.

In addition, the sensor module also includes an indicator light 21. When the sensor module detects that the metal wire 40 is located in the through hole 22, the indicator light 21 is lit, and when the sensor module detects that the metal wire 40 is not located in the through hole 22, the indicator light 21 is extinguished. That is, when the rubber barrel 10 is full of rubber, the metal wire 40 is located in the through hole 22 of the sensor module, and the indicator light 21 of the sensor module is always on. During the manufacturing process of the production line, as the metal wire 40 is used and the metal cover 12 of the glue barrel is lowered, when the glue 11 is completely used up, the metal wire 40 just drops outside the through hole 22 of the sensor module, that is, outside the sensing range. At this time, the state of the indicator light 21 of the sensor module will change from a normally on state to a normally off state, thereby giving a signal that the stock of the glue 11 in the current glue barrel 10 has been used up.

Please continue to refer to the third figure, which is a schematic diagram of the sensor module of the glue quantity monitoring device provided by the preferred embodiment of the present invention. The elements involved in the preferred embodiment of the present invention are as follows: a metal wire 40, which can be selected to have a diameter of 1 mm and a length of 0.25 meters, a sensor 20, a relay 24, and a two-core signal wire 23, which can be selected to have a length of 1 meter.

The sensor module as described above in the preferred embodiment of the present invention includes: a sensor 20, a relay 24, and a low glue sensing alarm system. The sensor 20 has the aforementioned through hole 22, and the sensor 20 is used to sense whether the metal wire 40 is located in the through hole 22.

As mentioned above, the sensor 20 can be a ring sensor. This ring sensor can be used by using existing products that can be purchased on the market. Its working principle is to operate using a simple on-off principle. For example, it can rely on an optical or magnetic interruption type sensor to achieve the purpose of the present invention.

The relay 24 is connected to the sensor 20 and the low glue amount sensing alarm system. The sensor 20 transmits a signal to the relay 24, and the relay 24 transmits a corresponding signal to the low glue amount sensing alarm system according to the signal. The low glue amount sensing alarm system displays the stock status of the glue 11 according to the corresponding signal.

The operating principle of the relay 24 is briefly described as follows: if the sensor 20 does not sense that the metal wire 40 is located in the through hole 22, the relay 24 will be turned on, and the spring inside will produce an action of attracting and conducting, and then the relay 24 can transmit a signal to the external low-glue sensing alarm system.

The low glue quantity sensing alarm system as mentioned above includes: a programmable logic controller (PLC) 26 and a display 27. The PLC 26 is connected to the relay 24 and the display 27. The PLC 26 receives the corresponding signal and transmits it to the display 27. The display 27 can be used to display the stock status of the glue 11.

The relay 24 and the sensor 20 are respectively connected to a battery 25 with a 24 volt output voltage. The signal output line of the sensor 20 is connected to the relay 24 through the wire 23. The relay 24 is further connected to the input port of the programmable logic controller 26 of the low-gelatin sensing alarm system. Finally, the programmable logic controller 26 is connected to a display 27 for signal output.

In summary, the glue quantity monitoring device of the present invention utilizes a sensor 20, such as a ring sensor having a high sensitivity to metal, to improve the method of monitoring the quantity of glue 11.

The installation method is as follows: first, fix the metal wire 40 on the metal cover 12 of the plastic barrel with the magnet 13, then install the sensor 20, such as a ring sensor, to the pressure pipe 30 where the glue 11 is monitored at the lowest point, and then insert the metal wire 40 into the pressure pipe 30. The magnet 13 fixing the metal wire 40 is adsorbed on the metal cover 12 of the plastic barrel, and the sensor 20 is connected to the relay 24. The relay 24 will give a glue quantity detection alarm signal to the programmable logic controller 26.

During the use of the production line, when the stock of the glue 11 gradually decreases, the metal cover 12 of the glue barrel will descend along with the stock of the glue 11. During the descending process, the magnet 13 adsorbed on the metal cover 12 of the glue barrel and the metal wire 40 fixed on the magnet 13 will also descend. When it descends to the set position, in addition to the state of its indicator light 21, In addition to changing the state from the normally on state to the normally off state, the sensor 20 also feeds back a signal to the relay 24 through the wire 23, and then transmits a corresponding signal to the programmable logic controller 26, and then transmits a corresponding signal to the display 27 to display the current inventory status of the glue 11 in the glue barrel 10, so as to provide an alarm shutdown alarm to the operators on the production line.

In addition, since the pressure air pipe 30 is a transparent tube, the operator on the factory production line can also visually observe how much height of the metal wire 40 is left to judge the stock of the glue 11. This is also another way to judge the stock of the glue 11.

Therefore, the design of the glue quantity monitoring device of the present invention as described above can be used to detect the amount of glue 11 in the automatic glue dispensing equipment, and has the following advantages: 1. First, through the design of the present invention, the amount of glue 11 can be determined by visual management through the operator on the factory production line visually observing the height of the metal wire 40 exceeding the sensor 20, and the amount of glue 11 can be known through the brightness and extinction of the indicator light 21 on the sensor 20 through an automated monitoring alarm method, and the amount of glue 11 can be known through the display content on the display 27 of the low glue amount sensing alarm system, so that the operator on the factory production line can prepare the glue 11 in a timely manner. 2. In addition, the design of the present invention has a high sensitivity, which can prevent false alarms or abnormal conditions of no alarms, and can also prevent the supply of glue 11 from being interrupted during production. 3. Furthermore, the design of the present invention has a high monitoring accuracy, which can use the stock of glue 11 in the glue barrel 10 to the minimum, so that there will not be a lot of glue 11 left in the glue barrel 10, resulting in serious waste of glue 11.

In summary, since the glue quantity monitoring device of the present invention utilizes a sensor module to detect whether the metal wire 40 is located in the through hole 22, it can determine whether there is still glue 11 in the glue barrel 10. Thus, the present invention can effectively display the situation that the glue 11 in the glue barrel 10 has been used up.

The above detailed description of the preferred specific embodiments is intended to more clearly describe the features and spirit of the present invention, but is not intended to limit the scope of the present invention by the preferred specific embodiments disclosed above. On the contrary, the purpose is to cover various changes and arrangements with equivalents within the scope of the patent application for the present invention.

10: Glue barrel 11: Glue 12: Metal cover for glue barrel 13: Magnet 20: Sensor 21: Indicator light 22: Through hole 23: Wire 24: Relay 25: Battery 26: Programmable logic controller 27: Display 30: Pressure pipe 40: Metal wire

The first figure is a schematic diagram showing the state of the glue quantity monitoring device provided by the preferred embodiment of the present invention when the glue is full; The second figure is a schematic diagram showing the state of the glue quantity monitoring device provided by the preferred embodiment of the present invention when the glue is used up; and The third figure is a schematic diagram showing the sensor module of the glue quantity monitoring device provided by the preferred embodiment of the present invention.

10: Glue barrel

11: Glue

12: Metal cover for plastic barrel

13: Magnet

20: Sensor

21: Indicator light

22:Through hole

23: Wires

30: Pressure trachea

40:Metal wire

Claims (6)

A glue quantity monitoring device is used to monitor the amount of glue in a glue barrel of an automatic glue dispensing device. The automatic glue dispensing device also has a glue barrel cover module and a pressure air pipe. The glue barrel cover module is arranged in the glue barrel and located at the top of the glue, and the pressure air pipe is combined with the glue barrel to form a ventilation space. The glue quantity monitoring device includes: A sensor module is arranged at a certain distance from the glue barrel cover module and has a through hole, and the pressure air pipe passes through the through hole; and A metal wire, one end of which is combined with the glue barrel cover module and arranged in the pressure air pipe; When the sensor module detects that the metal wire is located in the through hole, it indicates that there is still a stock of the glue, and when the sensor module detects that the metal wire is not located in the through hole, it indicates that there is no stock of the glue. The glue quantity monitoring device as described in claim 1, wherein the glue barrel cover module includes a metal cover for the glue barrel and a magnet, wherein the magnet is fitted with the metal cover for the glue barrel and the metal wire and is located on the side without the glue. The glue quantity monitoring device as described in claim 1, wherein the sensor module includes an indicator light, which lights up when the metal wire is detected to be located in the through hole, and turns off when the metal wire is detected not to be located in the through hole. A glue quantity monitoring device as described in claim 1, wherein the sensor module includes a sensor, a relay, and a low glue quantity sensing alarm system, the sensor has the through hole, the relay is connected to the sensor and the low glue quantity sensing alarm system, the sensor transmits a signal to the relay, the relay transmits a corresponding signal to the low glue quantity sensing alarm system based on the signal, and the low glue quantity sensing alarm system displays the stock status of the glue based on the corresponding signal. The glue quantity monitoring device as described in claim 4, wherein the low glue quantity sensing alarm system includes a programmable logic controller and a display, the programmable logic controller is connected to the relay and the display, the programmable logic controller receives the corresponding signal and then transmits it to the display, and the display is used to display the stock status of the glue. A glue quantity monitoring device as described in claim 4, wherein the sensor is a ring sensor.

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