Glue amount detection device for dispensing equipment

Abstract

The utility model provides a glue amount detection device for glue dispensing equipment, which relates to the technical field of glue dispensing and comprises a glue pipe, a glue outlet and a sealing plate are arranged on the glue pipe, a piston is arranged in the glue pipe, a compressed air pipe communicated with the inside of the glue pipe is arranged on the sealing plate, and one end of the compressed air pipe is connected with air supply equipment. A sensor used for identifying the piston and automatically calculating the distance to the piston is arranged on the inner side of the sealing plate and used for obtaining the glue amount in the glue pipe in real time, and a proportional valve is arranged on the compressed gas pipe and used for adjusting the gas pressure so as to achieve uniform dispensing; according to the device, the piston is identified and the distance between the piston and the piston is calculated, so that the residual glue amount in the glue pipe can be obtained in real time, glue can be automatically supplemented when the piston reaches the lowest position, glue supplementing is stopped when the piston reaches the highest position, the gas pressure can be controlled by adjusting the proportioning pump, and the uniform glue dispensing process is realized; and the dispensing effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of glue dispensing, in particular to a glue quantity detection device for glue dispensing equipment. Background Art

[0002] The die bonding machines currently used in the glue dispensing process on the market generally lack a device to detect the amount of glue in the glue container. Specifically, when the glue in the glue container is insufficient, the amount of glue dispensed to the frame or mold material by the glue dispensing head is unstable, and many of them fail to meet the process requirements and thus the bonding is poor. This results in waste of production materials such as frames and mold materials and reduced equipment production efficiency. At present, the glue dispensing device in the die bonding station in the front-end process of semiconductor packaging still relies on manpower to adjust the amount of glue dispensed, resulting in untimely adjustment that affects production efficiency, and makes it difficult to reduce labor costs and control quality well.

[0003] Announcement No. CN209549875U proposes a combined dispensing mechanism for a dispensing machine. During the dispensing process, the device can only control the extrusion amount of the glue liquid, and cannot effectively detect the real-time remaining amount in the glue hose of the dispensing machine. In particular, when the remaining glue liquid reserve in the glue hose is zero, the information of no glue cannot be transmitted to the dispensing machine, resulting in the dispensing machine being unable to automatically stop working when there is a lack of glue, thereby affecting the dispensing efficiency. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then propose a glue quantity detection device for glue dispensing equipment.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A glue quantity detection device for glue dispensing equipment comprises a rubber hose, a glue outlet and a sealing plate are arranged on the rubber hose, a piston is arranged inside the rubber hose, a compressed air pipe connected to the inside of the rubber hose is arranged on the sealing plate, one end of the compressed air pipe is connected to an air supply device, a sensor for identifying the piston and automatically calculating the distance to the piston is arranged on the inner side of the sealing plate so as to obtain the glue quantity in the rubber hose in real time, and a proportional valve is arranged on the compressed air pipe so as to adjust the gas pressure and realize uniform glue dispensing.

[0007] The device can know the remaining glue amount in the rubber hose in real time by identifying the piston and calculating the distance between the piston and the device. When the piston reaches the lowest position, the device can automatically replenish the glue. When the piston reaches the highest position, the device stops replenishing the glue. By adjusting the proportional pump, the gas pressure can be controlled to achieve a uniform dispensing process and a better dispensing effect.

[0008] Furthermore, the sensor is a color sensor, and the surface of the piston has a bright color.

[0009] Furthermore, the sensor is an ultrasonic sensor.

[0010] Furthermore, the color sensor is connected to a fiber optic amplifier.

[0011] The above solution combines the color sensor and the optical fiber amplifier, which can further realize the accurate detection of the color of the object and the stable transmission of the signal.

[0012] Furthermore, a heat-insulating layer is provided on the outer side of the hose.

[0013] The above scheme can ensure that the storage temperature of the glue liquid in the hose is within a certain range without large fluctuations through the thermal insulation layer.

[0014] Furthermore, a rubber sleeve is provided on the outer side of the thermal insulation layer.

[0015] The above solution can effectively reduce the propagation of ultrasound to the outside world through the rubber sleeve.

[0016] Furthermore, the lower area of ​​the rubber hose is connected to an inclined rubber injection hose, one end of the rubber injection hose is connected to a suction device and a one-way valve is arranged on the rubber injection hose.

[0017] The above solution can realize the automatic glue filling process through the glue injection tube, suction equipment and sensors.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] Compared with the existing technology, the device can know the remaining glue amount in the hose in real time by identifying the piston and calculating the distance between the piston and the device. When the piston reaches the lowest position, the glue can be automatically replenished, and when the piston reaches the highest position, the glue replenishment stops. By adjusting the proportional pump, the gas pressure can be controlled to achieve a uniform dispensing process, and the dispensing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of the label A;

[0022] Reference numerals:

[0023] 1. Rubber hose; 11. Glue outlet; 12. Sealing plate; 13. Compressed air pipe; 14. Proportional valve; 15. Piston; 2. Color sensor; 21. Fiber optic amplifier; 3. Ultrasonic sensor; 31. Insulation layer; 4. Rubber sleeve; 5. Glue injection hose; 51. One-way valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0025] like Figure 1 and Figure 2 As shown, a glue quantity detection device for glue dispensing equipment includes a rubber hose 1, a glue outlet 11 and a sealing plate 12 are provided on the rubber hose 1, a piston 15 is provided inside the rubber hose 1, a compressed air pipe 13 connected to the inside of the rubber hose 1 is provided on the sealing plate 12, one end of the compressed air pipe 13 is connected to an air supply device, and the air supply device specifically adopts an air pump, a sensor for identifying the piston 15 and automatically calculating the distance to the piston 15 is provided on the inner side of the sealing plate 12 so as to obtain the glue quantity in the rubber hose 1 in real time, and a proportional valve 14 is provided on the compressed air pipe 13 for adjusting the gas pressure to achieve uniform glue dispensing.

[0026] First embodiment:

[0027] The specific implementation of the first embodiment of the utility model is as follows Figure 1 As shown, the sensor is a color sensor 2, and the surface of the piston 15 has a bright color; the color of the surface of the piston 15 can be any one of black, blue, green, yellow, white and brown; the first embodiment can effectively perform color recognition detection on the piston 15 through the color sensor 2, and as the dispensing process proceeds, the distance between the pistons 15 can be measured in real time through color changes to know the remaining amount of glue in the hose 1. The detection principle of the color sensor 2 is common knowledge and is not described.

[0028] Further optimization of the above first embodiment is as follows: Figure 1 As shown, the color sensor 2 is connected to a fiber optic amplifier 21 ; by connecting the fiber optic amplifier 21 , accurate detection of the color of the object and stable transmission of the signal can be further achieved.

[0029] Second embodiment:

[0030] The specific implementation of the second embodiment of the utility model is as follows Figure 1 As shown, the sensor is an ultrasonic sensor 3; in the second embodiment, the ultrasonic sensor 3 can automatically detect the current movement height of the piston 15 and then calculate the distance to the piston 15 to know the remaining amount of glue in the hose 1 in real time. The ultrasonic sensor 3 can also be replaced by a distance sensor.

[0031] Further refinement of the embodiment of the present utility model is as follows: Figure 1 As shown, a heat-insulating layer 31 is disposed on the outer side of the hose 1; the heat-insulating layer 31 can ensure that the storage temperature of the glue liquid in the hose 1 is within a certain range without large fluctuations.

[0032] Further optimization of the above embodiment, such as Figure 1 and Figure 2 As shown, a rubber sleeve 4 is provided on the outside of the thermal insulation layer 31; the rubber sleeve 4 can effectively reduce the propagation of ultrasound to the outside.

[0033] Further refinement of the embodiment of the present utility model is as follows: Figure 1 As shown, the lower area of ​​the rubber hose 1 is connected to an inclined rubber injection pipe 5, one end of the rubber injection pipe 5 is connected to a suction device and a one-way valve 51 is provided on the rubber injection pipe 5. The suction device is specifically a rubber pump.

[0034] It should be noted that the air pump, the glue pump and the one-way valve 51 are all electrically connected to the controller, which is not shown in the figure.

[0035] The workflow of this utility model:

[0036] First, glue is injected into the rubber hose 1 through the suction device, and then the piston 15 starts to rise. At this time, the air pump stops working under the action of the controller. When the distance between the piston 15 and the sensor reaches the lower limit value range pre-set in the controller, the controller immediately controls the glue pump to stop working, and the air pump starts working, and then the glue dispensing process can be started. The pressure of the gas introduced into the rubber hose 1 can be adjusted by the proportional valve 14, so that the piston 15 can drop at a uniform speed to achieve uniform glue dispensing. As the glue dispensing process continues, the piston 15 will continue to drop. When the distance between the piston 15 and the sensor reaches the upper limit value pre-set in the controller, the controller immediately controls the air pump to stop working. At the same time, the suction device is controlled to work to replenish the glue in the rubber hose 1. When the distance between the piston 15 and the sensor reaches the lower limit value range pre-set in the controller again, the glue pump stops working and the air pump starts again. The above process can be repeated to realize real-time detection of the glue inside the rubber hose 1 and automatic glue replenishment.

[0037] Compared with the prior art, the device can know the remaining amount of glue in the rubber hose 1 in real time by identifying the piston 15 and calculating the distance between the piston 15 and the rubber hose 1. When the piston 15 reaches the lowest position, the rubber can be automatically replenished. When the piston 15 reaches the highest position, the rubber replenishment stops. By adjusting the proportional pump, the gas pressure can be controlled to achieve a uniform dispensing process, and the dispensing effect is better.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A glue quantity detection device for glue dispensing equipment, comprising a rubber hose (1), the rubber hose (1) is provided with a glue outlet (11) and a sealing plate (12), a piston (15) is provided inside the rubber hose (1), a compressed air pipe (13) connected to the inside of the rubber hose (1) is provided on the sealing plate (12), one end of the compressed air pipe (13) is connected to an air supply device, characterized in that: A sensor for identifying the piston (15) and automatically calculating the distance to the piston (15) is arranged on the inner side of the sealing plate (12) so as to obtain the amount of glue in the rubber hose (1) in real time. A proportional valve (14) is arranged on the compressed air pipe (13) so as to adjust the gas pressure and thereby realize uniform dispensing.

2. The glue quantity detection device for glue dispensing equipment according to claim 1, characterized in that: The sensor is a color sensor (2), and the surface of the piston (15) has a bright color.

3. The glue quantity detection device for glue dispensing equipment according to claim 1, characterized in that: The sensor is an ultrasonic sensor (3).

4. The device for detecting the amount of glue used in glue dispensing equipment according to claim 2, characterized in that: The color sensor (2) is connected to an optical fiber amplifier (21).

5. The device for detecting the amount of glue used in glue dispensing equipment according to claim 3, characterized in that: A heat-insulating layer (31) is provided on the outer side of the rubber hose (1).

6. The device for detecting the amount of glue used in glue dispensing equipment according to claim 5, characterized in that: A rubber sleeve (4) is provided on the outer side of the thermal insulation layer (31).

7. The device for detecting the amount of glue used in glue dispensing equipment according to claim 1, characterized in that: The lower area of ​​the rubber hose (1) is connected to an inclined rubber injection hose (5), one end of the rubber injection hose (5) is connected to a suction device and a one-way valve (51) is provided on the rubber injection hose (5).

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