TWM632643U - Glue outlet device - Google Patents

Abstract

A glue dispensing device, including a body, a pressure control unit, a certain amount of glue supply unit and a point Glue needles. The seat body includes a pressure control chamber and a glue pipe body, the pressure control chamber is located inside the seat body, the glue pipe body extends from one end of the seat body to the other end, and the glue pipe body runs through the pressure control chamber. The pressure control unit is coupled to the pressure control chamber. The quantitative glue supply unit is arranged at one end of the base body and coupled with the glue pipe body. The glue dispensing needle is arranged at the other end of the seat body, and is coupled with the glue pipe body. The above-mentioned glue dispensing device utilizes pressure changes in the pressure control chamber to deform the glue tube body, so that the glue dispensing device can achieve precise quantitative and stable glue dispensing.

Description

Glue device

The present invention relates to a glue dispensing device, in particular to a glue dispensing device capable of precise quantitative and stable glue supply.

Bonding technology is a common technology in the semiconductor industry. The bonding technology is to apply glue to the place where the chip or substrate is to be bonded (bonded), and then place another chip on the place to be bonded, so that the chip and the substrate are bonded to each other. Or wafer to wafer bonded to each other.

The existing glue dispensing device includes a body, a glue supply unit and at least a glue dispensing needle, and the body has at least one glue outlet channel. One end of the colloid discharge channel is coupled to the glue supply unit, and the other end of the colloid discharge channel is coupled to the dispensing needle. The glue supply unit provides glue, and the glue flows to the glue dispensing needle through the glue discharge channel for the glue dispensing process.

Although the existing dispensing device can achieve the effect of dispensing, there are still many shortcomings, such as:

Disadvantage 1. When the glue reaches the dispensing needle, the glue must rely on gravity and the thrust of the subsequent glue to break through the surface tension before it can flow out of the dispensing needle for dispensing. However, when the glue just flows out of the dispensing needle, because of the breakthrough of the relationship between the surface tension of the needle, the amount of glue will be more when the accumulated pressure is higher, and the amount of glue will gradually decrease after a period of time. When the amount of glue increases to a certain level, it will It tends to be stable. When the front-end feeding stops, the residual pressure of the needle will be released slowly, and the glue will slowly overflow.

As mentioned above, the dispensing needle has the problem of unstable glue output at the beginning or end of dispensing, which is difficult to control.

Disadvantage 2. Glue is a viscous fluid, so the flow rate or flow rate of glue may be affected by external environmental factors such as the machine itself, temperature and humidity during the bonding process, or the glue supply unit, so that the glue output will appear One imprecise and uncertain situation.

Based on the above, in view of the shortcomings of the conventional technology that cannot produce glue stably and accurately, it has become a project that the industry is eager to improve and innovate.

In view of the shortcomings of the above-mentioned prior art, the inventor of the present invention has finally successfully developed and completed the glue-discharging device of the present invention after many years of research and experimentation.

The present invention discloses a glue dispensing device, which includes a base, a pressure control unit, a certain amount of glue supply unit and a glue dispensing needle. The seat body includes a pressure control chamber and a glue pipe body, the pressure control chamber is located inside the seat body, the glue pipe body extends from one end of the seat body to the other end, and the glue pipe body runs through the pressure control chamber. The pressure control unit is coupled to the pressure control chamber. The quantitative glue supply unit is arranged at one end of the base body and coupled with the glue pipe body. The glue dispensing needle is arranged at the other end of the seat body, and is coupled with the glue pipe body.

In one embodiment, the glue tube is an elastic tube or a rubber tube.

In one embodiment, the pressure control unit is a pressure regulating device.

In one embodiment, the pressure control unit is coupled to the pressure control chamber through a joint.

In one embodiment, the quantitative glue supply unit is a single screw pump, a mono pump or a plunger pump.

In one embodiment, the quantitative glue supply unit includes a rotor and a stator, the stator is located outside the rotor, the stator is an elastic body, and the rotor is an eccentric screw.

In one embodiment, a glue amount sensing unit is disposed on the dispensing needle to sense the glue output of the dispensing needle.

The present invention discloses a glue dispensing device, which includes a base and a glue point. The seat body includes a pressure control chamber and a glue pipe body, the pressure control chamber is located inside the seat body, the glue pipe body extends from one end of the seat body to the other end, and the glue pipe body runs through the pressure control chamber. The glue dispensing needle is arranged at one end of the seat body and coupled with the glue pipe body.

With the above-mentioned glue dispensing device, and utilizing the pressure change of the pressure control chamber to deform the glue pipe body, the glue dispensing device can achieve accurate quantitative and stable glue dispensing effect.

10: seat body

100: pressure control chamber

101: glue tube body

102: Connector

11: Pressure control unit

12: Quantitative glue supply unit

120: stator

121: rotor

13: Dispensing needle

14: Glue amount sensing unit

Fig. 1 is a schematic diagram of a glue discharging device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a pressure control chamber of a glue dispensing device in a pressurized state according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a pressure control chamber of a glue dispensing device in a depressurized state according to an embodiment of the present invention.

In order to enable those with ordinary knowledge in the technical field to fully understand the technical features, content and advantages of the present invention and the effects it can achieve, the present invention is hereby combined with drawings and described in detail in the form of embodiments as follows, and among them The purpose of the diagrams used is only for illustration and auxiliary instructions, and may not be the true proportion and precise configuration of the new model after implementation. Therefore, the proportion and configuration relationship of the attached diagrams should not be interpreted and limited to the application of the new model. The scope of rights in actual implementation shall be described first.

Please refer to Figure 1, which is a schematic diagram of a glue dispensing device according to an embodiment of the present invention. As shown in the figure, the glue dispensing device includes a base 10, a pressure control unit 11, a certain amount of glue supply unit 12, a point The glue needle 13 and a glue amount sensing unit 14 .

The seat body 10 includes a pressure control cavity 100 and a glue tube body 101 . The pressure control chamber 100 is located inside the seat body 10 . The glue tube body 101 is located inside the base body 10 and extends from one end of the base body 10 to the other end, and the glue tube body 101 runs through the pressure control chamber 100 . The glue tube body 101 is an elastic tube body or a rubber tube.

The pressure control unit 11 is an air compressor. The pressure control unit 11 is coupled to the pressure control chamber 100 of the base 10 through a joint 102 . The joint 102 can be a valve body, a two-way valve or a pipe body.

The quantitative glue supply unit 12 is arranged at one end of the base body 10 and coupled with the glue pipe body 101 . The quantitative glue supply unit 12 is a Mono pump or a Piston pump. In one embodiment, if the quantitative glue supply unit 12 is a monopump, it includes a rotor 121 and a stator 120 , and the stator 120 is located outside the rotor 121 . The stator 120 is an elastic body. The rotor 121 is an eccentric screw. When the rotor 121 rotates, a cavity with the same cross-sectional area will be formed, and the liquid conveyed in the cavity will be divided into individual packets, so the quantitative glue supply unit 12 has the advantage of stable volume supply, and is not affected by the machine itself or The influence of external environmental factors during the bonding process.

If the quantitative glue supply unit 12 is a plunger pump, the plunger pump can be a single plunger pump, a horizontal plunger pump, an axial plunger pump or a radial plunger pump. The single plunger pump includes an eccentric wheel, a plunger, a spring, a cylinder, and two check valves. A closed volume is formed between the plunger and the bore of the cylinder. The horizontal plunger pump is mainly composed of a plurality of plungers (3 or 6) installed side by side, and a crankshaft is used to directly push the plunger through the connecting rod slider or the eccentric shaft for reciprocating motion to realize the hydraulic pressure of suction and discharge of liquid. Pump. Axial piston pump (Piston pump) is a piston or A plunger pump in which the reciprocating direction of the plunger is parallel to the central axis of the cylinder. Radial piston pumps are divided into pressure oil supply type and self-priming oil type. Radial plungers are divided into two categories: pump valve flow distribution and axial flow distribution.

In one embodiment, if the quantitative glue supply unit 12 is a plunger pump, the plunger pump is a positive displacement pump or a reciprocating pump. The plunger pump makes the fluid medium work through the pressure difference caused by the change of the sealing volume in the plunger cylinder caused by the reciprocating movement of the plunger in the plunger cylinder. Therefore, the delivery volume or flow rate of the fluid can be controlled by adjusting the pressure difference, so the plunger pump can provide quantitative glue through the control of the pressure difference, and is not affected by the machine itself or the external environmental factors during the bonding process.

The dispensing needle 13 is located at the other end of the base body 10 and is coupled to the glue tube body 101 .

The glue amount sensing unit 14 is disposed on the glue dispensing needle 13 to sense the glue output of the glue dispensing needle 13 . The glue amount sensing unit 14 can be a proximity switch, a capacitive sensor or an optical sensor. The glue amount sensing unit 14 is electrically connected to the pressure control unit 11 .

Please refer to Fig. 2, which is a schematic diagram of the pressure control chamber 100 of the glue dispensing device of an embodiment of the present invention in a pressurized state. The glue message is sent to the pressure control unit 11, and the pressure control unit 11 provides a pressurized air. The pressurized air enters the inside of the pressure control chamber 100 through the joint 102, so that the pressure inside the pressure control chamber 100 increases, and the glue tube body 101 is compressed toward its interior, and the glue inside the glue tube body 101 is squeezed To the dispensing needle 13, thereby increasing the amount of glue at the dispensing needle 13, and making the glue overcome the surface tension, and flow out of the dispensing needle 13, and in a very short time, the glue output will be increased from less to Stable output, so the original glue output at the initial stage of dispensing will gradually increase and the subsequent glue overflow state can be eliminated.

If after the above-mentioned pressurization, the pressure inside the pressure control chamber 100 cannot make the glue overcome the above-mentioned surface pressure, the pressure control unit 11 can provide pressurized air to the pressure control chamber 100 again or continuously to improve the pressure. The pressure inside the control pressure chamber 100 is raised to increase the force of the glue tube body 101 being squeezed, so that more glue is squeezed to the dispensing needle 13, so that the above-mentioned surface pressure can be overcome.

In addition, after a period of time when the glue is released, when the glue amount sensing unit 14 sends a message to the pressure control unit 11 that the amount of glue has reached the standard, the internal pressure of the pressure control chamber 100 will gradually return to the initial unpressurized state. And the glue tube body 101 is gradually restored to the state of being unsqueezed. The internal pressure of the pressure control chamber 100 can be returned to the pressure control unit 11 through the joint 102 , so that the internal pressure of the pressure control chamber 100 can be restored to the initial unpressurized state.

The quantitative glue supply unit 12 can supply glue stably and quantitatively, so the speed of glue output from the dispensing needle 13 can be kept stable, and the glue flow rate can be kept stable, thereby achieving precise and quantitative effects.

If the glue amount sensing unit 14 senses that the glue output of the dispensing needle 13 is abnormal, maintenance is required, for example, the dispensing needle 13 is blocked or dirty, or dispensing needs to be stopped during the dispensing process. The glue amount sensing unit 14 sends an abnormal signal to the pressure control unit 11 .

Please refer to Fig. 3, which is a schematic diagram of the pressure control chamber of the glue dispensing device according to an embodiment of the present invention in a depressurized state. As shown in the figure, the pressure control unit 11 provides a negative pressure (pumping), and by The joint 102 enters the pressure control chamber 100 to reduce the internal pressure of the pressure control chamber 100 . The glue tube body 101 is affected by the low-pressure pressure control chamber 100 , causing it to expand outward, so that the glue stays inside the glue tube body 101 , so that the glue dispensing needle 13 cannot flow out the glue. Relevant personnel can clean up, repair or replace the dispensing needle 13 .

If when the glue amount sensing unit 14 senses that the dispensing needle 13 still has glue flowing out, the glue amount sensing unit 14 sends an abnormal message to the pressure control unit 11 again, and the pressure control unit 11 is further improved. Negative pressure is supplied, and the internal pressure of the pressure control chamber 100 is reduced again, so that the glue tube body 101 expands further, so that the glue cannot flow out from the glue dispensing needle 13 further.

As mentioned above, if after the above-mentioned negative pressure, the decompression inside the pressure control chamber 100 still allows the glue to flow out from the dispensing needle 13, the pressure control unit 11 can provide negative pressure to the pressure control chamber 100 again or continuously to reduce the pressure. The pressure inside the pressure chamber 100 is controlled so that the glue pipe body 101 expands further, so that the glue cannot flow out from the dispensing needle 13 .

If the above-mentioned maintenance, cleaning or replacement has been completed, the pressure control unit 11 stops depressurization, the internal pressure of the pressure control chamber 100 gradually returns to the state where it was not decompressed initially, and the glue tube body 101 gradually returns to the unexpanded state. status. The pressure control unit 11 provides a positive pressure to the pressure control chamber 100 through the joint 102, or external air flows into the pressure control chamber 100 through the joint 102, so that the internal pressure of the pressure control chamber 100 returns to the initial undepressurized state, and Make glue can flow out by dispensing needle 13 places.

One embodiment of the present invention is a glue-out method for practical application, the steps of which include:

Step 1, stable glue supply, please refer to FIG. 1 again, the quantitative glue supply unit 12 provides glue to the dispensing needle 13 through the glue tube body 101 .

Step 2: Precise and quantitative glue dispensing. Please refer to FIG. 2 again. The glue volume sensing unit 14 sends a glue dispensing message to the pressure control unit 11, and the pressure control unit 11 provides a pressurized air to enter the pressure control chamber 100 through the joint 102. The glue pipe body 101 is pressurized. The pressurized air increases the pressure inside the pressure control chamber 100, so that the glue tube body 101 is pressed and compressed toward its inside, and the glue inside the glue tube body 101 is squeezed to the dispensing needle 13, thereby increasing the pressure on the dispensing needle. 13, and make the glue break through the surface tension, and flow out of the dispensing needle 13 at a normal flow rate. In a very short time, the glue output will increase from less to stable output.

If after the above-mentioned pressurization, the pressure inside the pressure control chamber 100 cannot make the glue overcome the above-mentioned surface tension, the pressure control unit 11 can provide pressurized air to the pressure control chamber 100 again or continuously to lift the inside of the pressure control chamber 100. to increase the force of the glue tube body 101 being squeezed, and squeeze more glue to the dispensing needle 13 to overcome the surface tension.

Step 3: The pressure of the pressure control chamber 100 returns to normal pressure. If the glue amount sensing unit 14 sends a message to the pressure control unit 11 that the glue output has reached the standard, the internal pressure of the pressure control chamber 100 gradually returns to the original pressure. Pressurized state, and the glue tube body 101 gradually returns to the original state (that is, the state that is not squeezed). The internal pressure of the pressure control chamber 100 can be returned to the pressure control unit 11 through the joint 102 , so that the internal pressure of the pressure control chamber 100 can be restored to the initial unpressurized state.

Step 4, when stopping glue dispensing or maintenance, please refer to Figure 3 again, when the glue volume sensing unit 14 senses that the dispensing needle 13 has an abnormal glue dispensing volume, such as clogged or dirty, or when the dispensing needle 13 needs to be repaired Or when replacing, the pressure control unit 11 provides a negative pressure to the pressure control chamber 100 to reduce the internal pressure of the pressure control chamber 100 to decompress the glue tube body 101 . The glue tube body 101 is affected by the low-pressure pressure control chamber 100 , causing it to expand outward, so that the glue stays inside the glue tube body 101 , so that the glue dispensing needle 13 cannot flow out the glue. Relevant personnel can clean up, repair or replace the dispensing needle 13 .

If after the above-mentioned decompression, the decompression inside the pressure control chamber 100 still allows the glue to flow out from the dispensing needle 13, the pressure control unit 11 can provide negative pressure to the pressure control chamber 100 again or continuously to reduce the pressure of the pressure control chamber 100. The internal pressure causes the glue tube body 101 to expand further, so that the glue cannot flow out from the dispensing needle 13 .

Step 5, the pressure in the pressure control chamber returns to normal pressure. If the glue amount sensing unit 14 sends a message that there is no abnormality in the glue needle 13 to the pressure control unit 11, the pressure control unit 11 stops supplying negative pressure, and the pressure control chamber 100 The internal pressure of the system gradually returns to the initial unpressurized state, and the glue pipe body 101 is gradually Gradually return to the original state (that is, the unexpanded state). The external air can enter the pressure control chamber 100 through the joint 102 , so that the internal pressure of the pressure control chamber 100 can be restored to the initial undepressurized state (ie normal pressure state).

To sum up, the present invention uses the pressure change of the pressure control chamber 100 to deform the glue tube body 101 , so that the present invention can achieve precise quantitative and stable glue output.

The above description is only for example, and is used to illustrate the feasible specific embodiments of the technical content of the present invention, and is not intended to limit the present invention. Equivalent replacements, modifications or changes made by persons with ordinary knowledge in the technical field of the present invention based on the teachings disclosed in the specification are included in the scope of the patent application of the present invention and do not depart from the scope of rights of the present invention.

10: seat body

100: pressure control chamber

101: glue tube body

102: Connector

11: Pressure control unit

12: Quantitative glue supply unit

120: stator

121: rotor

13: Dispensing needle

14: Glue amount sensing unit

Claims (8)

A gluing device, comprising: The seat body includes a pressure control chamber and a glue pipe body, the pressure control chamber is located inside the seat body, the glue pipe body extends from one end of the seat body to the other end, and the glue pipe body runs through the pressure control chamber ; a pressure control unit coupled to the pressure control chamber; A certain amount of glue supply unit is arranged at one end of the base body and coupled to the glue pipe body; and A little glue needle is arranged at the other end of the seat and coupled to the glue tube. The glue dispensing device as described in Claim 1, wherein the glue tube is an elastic tube or a rubber tube. The glue dispensing device according to claim 1, wherein the pressure control unit is an air compressor. The glue dispensing device as described in claim 1 further includes a joint through which the pressure control unit is coupled to the pressure control chamber. The glue dispensing device as described in Claim 1, wherein the quantitative glue supply unit is a single screw pump, a mono pump or a plunger pump. The glue dispensing device as described in Claim 1, wherein the quantitative glue supply unit includes a rotor and a stator, the stator is located outside the rotor, the stator is an elastic body, and the rotor is an eccentric screw. The glue dispensing device as described in claim 1 further includes a glue volume sensing unit disposed on the dispensing needle to sense the glue dispensing volume of the dispensing needle. A gluing device, comprising: The seat body includes a pressure control chamber and a glue pipe body, the pressure control chamber is located inside the seat body, the glue pipe body extends from one end of the seat body to the other end, and the glue pipe body runs through the pressure control chamber ;as well as A glue needle is arranged at one end of the seat and coupled to the glue tube.

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