Large flow glue supply mechanism

Abstract

The present invention discloses a high-flow glue supply mechanism, wherein a suction cup body is sealedly connected below the glue feed end of the glue supply pump. Three lifting cylinders arranged in an equilateral triangle shape are provided on the upper surface of the carrier plate and located outside the glue supply pump. The movable end of each lifting cylinder is connected to the same movable bracket. The movable bracket, which can move up and down, is connected to the glue supply pump. At least two positioning pins for cooperating with the glue barrel are installed on the carrier plate. The fixed ends of adjacent lifting cylinders are connected by a horizontal plate. A through hole is formed in the middle of the suction cup body, which is vertically connected and for the fluid in the glue barrel to pass through. A cavity is formed in the suction cup body and located circumferentially outside the through hole. A plurality of air inlet holes connected to the cavity are spaced apart on the lower surface of the suction cup body. The present invention can promptly and evenly discharge most of the gas generated during the process and can also prevent the reverse entry of gas outside the barrel to generate bubbles.

Description

Technical Field

[0001] The invention relates to the technical field of glue transmission, and in particular to a large-flow glue supply mechanism. Background Art

[0002] Glue dispensing is a widely used process in the electronics industry, particularly in the mobile phone industry. Glue dispensing serves to bond, seal, and connect. Electronic products use gluing to replace mechanical connections to meet the development needs of lightweight and miniaturization. Therefore, glue dispensing equipment and glue supply equipment are key research areas. Glue dispensing equipment ensures dispensing accuracy, while glue supply equipment ensures a continuous supply of glue. During the glue fluid delivery process, fluid viscosity is closely linked to the fluid delivery operation. Fluids with low viscosity are easily transferred. Typically, the fluid is stored in a tank and pumped directly from the barrel to the corresponding metering unit using a pneumatic diaphragm pump or electric pump. High fluid viscosity makes transfer difficult using diaphragm pumps and electric pumps.

[0003] In the prior art, for fluids with high viscosity, a pressure plate that continuously presses down is generally set on the surface of the glue. The glue is then transferred to the glue injection device through a feed pipe by the pressure of the pressure plate. However, due to the high viscosity of the glue surface in the glue barrel, the pressure plate does not completely fit the glue surface, resulting in some gas being trapped when the pressure plate presses on the glue, causing bubbles to be mixed into the glue and affecting the quality of the glue. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a large-flow glue supply mechanism, which can not only output high-viscosity fluid directly from the packaging barrel at a relatively constant speed, but also discharge most of the gas generated in the process in a timely and uniform manner, and can also prevent the gas outside the barrel from entering in reverse and generating bubbles.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a large-flow glue supply mechanism, comprising: a carrier plate for placing a glue barrel and a glue supply pump installed above the carrier plate, characterized in that: a suction cup body is sealedly connected below the glue inlet end of the glue supply pump, three lifting cylinders arranged in an equilateral triangle shape are provided on the upper surface of the carrier plate and located outside the glue supply pump, the movable end of each lifting cylinder is connected to the same movable bracket, the movable bracket that can move up and down is connected to the glue supply pump, at least two positioning pins for cooperating with the glue barrel are installed on the carrier plate, and the fixed ends of adjacent lifting cylinders are connected by a horizontal plate;

[0006] The outer side surface of the lower portion of the suction cup body, which can move downward in the glue barrel, has an interference fit with the inner wall of the glue barrel. A through hole is provided in the middle of the suction cup body, which passes through the through hole and allows the fluid in the glue barrel to pass through. The upper surface of the suction cup body is provided with an annular protrusion located above the through hole. The upper end of the annular protrusion is used to be sealed with the glue supply pump.

[0007] A cavity is formed in the suction cup body and on the circumferential outside of the through hole. A plurality of air intake holes connected to the cavity are spaced apart on the lower surface of the suction cup body. A plurality of air intake holes spaced apart along the circumference are provided on the inner side of the upper surface of the annular protrusion. The lower end of the air intake hole is connected to the cavity in the suction cup body. A notch air groove connected to the air intake hole is correspondingly provided on the inner wall of the annular protrusion. A vacuum generating assembly installed on the upper surface of the suction cup body is connected to the cavity.

[0008] The further improved scheme in the above technical scheme is as follows:

[0009] 1. In the above scheme, the vacuum generating assembly further includes a valve body and a valve needle. At least one air outlet connected to the cavity is opened on the upper surface of the suction cup body. A valve body with an upper cavity and a lower cavity built in is installed directly above the air outlet through a bracket. The lower end of the valve needle, whose upper end is located in the upper cavity, passes through the lower cavity and forms an air outlet channel with the inner wall of the lower cavity. The lower end of the air outlet channel is connected to the air outlet through a connecting pipe, and the upper end of the air outlet channel is connected to an air outlet nozzle installed on the lower cavity.

[0010] 2. In the above scheme, the upper end of the valve needle has a flange portion extending radially outward, and a spring is arranged between the upper surface of the flange portion and the upper wall of the upper cavity. The lower end of the valve needle under the action of the spring in an extruded state blocks the air outlet, and an air inlet channel connected to the bottom of the flange portion is provided on the upper cavity. When air is injected into the upper cavity through the air inlet channel, the valve needle moves upward to open the air outlet.

[0011] 3. In the above solution, the air outlet nozzle is connected to a vacuum generator.

[0012] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0013] 1. The large-flow glue supply mechanism of the present invention has an upper end of an annular protrusion on the upper surface of the suction cup body and located on the through hole, which is used to be sealed and connected to the glue supply pump. A cavity is formed in the suction cup body and on the circumferential outside of the through hole. A plurality of air intake holes connected to the cavity are spaced apart on the lower surface of the suction cup body, and a plurality of air intake holes arranged at intervals along the circumference are opened on the inner side of the upper surface of the annular protrusion. The lower end of the air intake hole is connected to the cavity in the suction cup body, and a notched air groove connected to the air intake hole is correspondingly arranged on the inner wall of the annular protrusion. By moving the body downward in the glue barrel, the high-viscosity fluid can be directly discharged from the packaging barrel at a relatively constant speed, and the gas in the barrel can be discharged at the same time, and the situation that the glue blocks the exhaust channel before the gas is exhausted can be effectively avoided, thereby ensuring that the gas in the barrel is evenly and timely discharged before the glue is discharged to the outside, and avoiding bubbles mixed in during the glue discharge process and affecting the quality of the glue during subsequent use.

[0014] 2. The large flow glue supply mechanism of the present invention has an air inlet channel that connects the portion located in the upper cavity and below the flange portion with the outside world. When air is injected into the upper cavity through the air inlet channel, the valve needle moves upward to open the air outlet hole. The lower end of the valve needle, whose upper end is located in the upper cavity, passes through the lower cavity and forms an air outlet channel between the inner wall of the lower cavity. The lower end of the air outlet channel is connected to the air outlet hole through a connecting pipe, and the upper end of the air outlet channel is connected to an air outlet nozzle installed on the lower cavity. A valve is provided between the upper surface of the flange portion at the upper end of the valve needle and the upper wall of the upper cavity. There is a spring, and the lower end of the valve needle under the action of the spring in the squeezed state blocks the air outlet. Through the downward movement of the main body in the glue barrel, the high-viscosity fluid can be directly discharged from the packaging barrel at a relatively constant speed, and most of the gas generated in the process can be discharged in time and evenly. The air outlet can also be tightly sealed in the non-exhaust state to prevent the gas outside the barrel from reversely entering and generating bubbles, which is convenient for the use of glue after output and reduces the generation of bubbles in the glue that causes glue supply to be faulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attachment Figure 1 This is a schematic diagram of the overall structure of the large flow glue supply mechanism of the present invention;

[0016] Attachment Figure 2 This is a partial structural perspective view of the large flow glue supply mechanism of the present invention;

[0017] Attachment Figure 3 It is a cross-sectional perspective view of the annular raised portion of the large flow glue supply mechanism of the present invention;

[0018] Attachment Figure 4 This is a partial structural perspective view of the large flow glue supply mechanism of the present invention;

[0019] Attachment Figure 5 The present invention is attached Figure 4 A magnified view of point A;

[0020] Attachment Figure 6 This is a schematic diagram of the internal structure of the suction cup body of the large-flow glue supply mechanism of the present invention.

[0021] In the above drawings: 1. carrier plate; 2. glue supply pump; 3. lifting cylinder; 4. movable bracket; 5. suction cup body; 6. vacuum generating assembly; 7. through hole; 8. cavity; 81. sub-cavity; 9. annular protrusion; 10. air inlet through hole; 11. notch air groove; 12. air inlet hole; 13. air outlet; 14. valve body; 141. upper cavity; 142. lower cavity; 143. air outlet channel; 15. bracket; 16. valve needle; 161. flange; 17. connecting pipe; 18. air outlet nozzle; 19. spring; 20. air inlet channel; 21. sealing ring; 22. annular groove; 23. reinforcing rib; 231. air vent; 24. positioning pin; 25. cross plate. Implementation Method

[0022] In the description of this patent, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, for example, to mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this patent in specific circumstances.

[0023] Example 1: A high-flow glue supply mechanism, used in the field of heat dissipation of automotive electronic controllers, comprising: a carrier plate 1 for placing a glue barrel and a glue supply pump 2 installed above the carrier plate 1, wherein a suction cup body 5 is sealedly connected to the lower side of the glue inlet end of the glue supply pump 2;

[0024] At least two lifting cylinders 3 are provided on the upper surface of the carrier plate 1 and outside the glue supply pump 2. The movable end of each lifting cylinder 3 is connected to the same movable bracket 4. The movable bracket 4 is movable up and down and is connected to the glue supply pump 2.

[0025] The outer side surface of the lower portion of the suction cup body 5, which can move downward in the glue barrel, has an interference fit with the inner wall of the glue barrel. A through hole 7 is formed in the middle of the suction cup body 5, which passes through the through hole 7. An annular protrusion 9 is formed on the upper surface of the suction cup body 5 and located above the through hole 7. The upper end of the annular protrusion 9 is used to be sealed with the glue supply pump 2.

[0026] A cavity 8 is formed in the suction cup body 5 and on the circumferential outer side of the through hole 7. A plurality of air inlet holes 12 communicating with the cavity 8 are formed at intervals on the lower surface of the suction cup body 5. A plurality of air inlet holes 10 spaced apart along the circumference are formed on the inner side of the upper surface of the annular raised portion 9. The lower ends of the air inlet holes 10 communicate with the cavity 8 in the suction cup body 5.

[0027] A notched air groove 11 communicating with the air inlet hole 10 is correspondingly provided on the inner wall of the annular protrusion 9 , and a vacuum generating assembly 6 installed on the upper surface of the suction cup body 5 is connected to the cavity 8 for extracting the gas in the cavity 4 .

[0028] The driving body continues to move downward until it contacts the liquid surface. During this process, the gas between the lower surface of the body and the liquid surface overflows into the area surrounded by the annular protrusion, and enters the cavity through the notched air groove and the air inlet hole in turn, and is then discharged outward through the action of the vacuum generating assembly.

[0029] The vacuum generating assembly 6 further includes a valve body 14 and a valve needle 16. The upper surface of the suction cup body 5 is provided with at least one air outlet 13 connected to the cavity 8. The valve body 14 with an upper cavity 141 and a lower cavity 142 is mounted directly above the air outlet 13 via a bracket 15.

[0030] The lower end of the valve needle 16, whose upper end is located in the upper cavity 141, passes through the lower cavity 142 and forms an air outlet channel 143 with the inner wall of the lower cavity 142. The lower end of the air outlet channel 143 is connected to the air outlet hole 13 through a connecting pipe 17, and the upper end of the air outlet channel 143 is connected to an air outlet nozzle 18 installed on the lower cavity 142.

[0031] The upper end of the above-mentioned valve needle 16 has a radially outward flange portion 161, and a spring 19 is arranged between the upper surface of the flange portion 161 and the upper wall of the upper cavity 141. The lower end of the valve needle 16 under the action of the spring 19 in the extruded state blocks the above-mentioned air outlet 13, and the above-mentioned upper cavity 141 is provided with an air intake channel 20 connected to the bottom of the flange portion 161. When air is injected into the upper cavity 141 through the air intake channel 20, the above-mentioned valve needle 16 moves upward to open the air outlet 13.

[0032] By moving the main body downward in the glue barrel, high-viscosity fluid can be directly discharged from the packaging barrel at a relatively constant speed, and most of the gas generated in the process can be discharged promptly and evenly. The air outlet can also be tightly sealed in the non-exhaust state to prevent the gas outside the barrel from entering in reverse, which facilitates the use of glue after output and reduces the generation of bubbles in the glue that may cause a gap in the glue supply.

[0033] The air outlet nozzle 18 is connected to a vacuum generator.

[0034] An annular groove 22 with a built-in sealing ring 21 is formed on the upper surface of the annular protrusion 9 and is located outside the air inlet hole 10 along the entire circumference.

[0035] The sealing ring 21 is sealed to the glue inlet of the glue supply pump 2 .

[0036] A plurality of reinforcing ribs 23 are provided in the cavity 8 , thereby isolating the cavity 8 into a plurality of sub-cavities 81 . Each of the reinforcing ribs 23 is provided with at least one vent hole 231 communicating with adjacent sub-cavities 81 .

[0037] One end of the reinforcing rib 23 extending in the radial direction of the main body 1 is close to the through hole 7 , and the other end extends to the edge of the main body 1 .

[0038] The sub-cavity 81 formed between two adjacent reinforcing ribs 23 is a fan-shaped sub-cavity.

[0039] The evenly distributed air inlet holes 12 are all located in the area below the sub-cavity 81 .

[0040] Embodiment 2: A high-flow glue supply mechanism, comprising: a carrier plate 1 for placing a glue barrel and a glue pump 2 mounted above the carrier plate 1, wherein a suction cup body 5 is sealedly connected below the glue inlet end of the glue pump 2, and at least two lifting cylinders 3 are provided on the upper surface of the carrier plate 1 and outside the glue pump 2, wherein the movable end of each lifting cylinder 3 is connected to the same movable bracket 4, and the movable bracket 4 is connected to the glue pump 2.

[0041] The outer side surface of the lower portion of the suction cup body 5, which can move downward in the glue barrel, has an interference fit with the inner wall of the glue barrel. A through hole 7 is formed in the middle of the suction cup body 5, which passes through the through hole 7. An annular protrusion 9 is formed on the upper surface of the suction cup body 5 and located above the through hole 7. The upper end of the annular protrusion 9 is used to be sealed with the glue supply pump 2.

[0042] A cavity 8 is formed inside the suction cup body 5 and located on the circumferential outside of the through hole 7. A plurality of air intake holes 12 connected to the cavity 8 are provided at intervals on the lower surface of the suction cup body 5. A plurality of air intake holes 10 spaced apart along the circumferential direction are provided on the inner side of the upper surface of the annular raised portion 9. The lower end of the air intake hole 10 is connected to the cavity 8 in the suction cup body 5. A notch air groove 11 connected to the air intake hole 10 is correspondingly provided on the inner wall of the annular raised portion 9. A vacuum generating assembly 6 installed on the upper surface of the suction cup body 5 is connected to the cavity 8 for extracting the gas in the cavity 4.

[0043] While achieving the direct discharge of high-viscosity fluids from the packaging barrel at a relatively constant speed, the gas in the barrel can be discharged, and the situation in which the glue blocks the exhaust channel before the gas is completely discharged can be effectively avoided, thereby ensuring that the gas in the barrel is completely discharged evenly and in a timely manner before the glue is discharged, and avoiding bubbles mixed in during the glue discharge process and affecting the quality of the glue during subsequent use.

[0044] The vacuum generating assembly 6 further includes a valve body 14 and a valve needle 16. The upper surface of the suction cup body 5 is provided with at least one air outlet 13 connected to the cavity 8. The valve body 14 with an upper cavity 141 and a lower cavity 142 is mounted directly above the air outlet 13 via a bracket 15.

[0045] The lower end of the valve needle 16, whose upper end is located in the upper cavity 141, passes through the lower cavity 142 and forms an air outlet channel 143 with the inner wall of the lower cavity 142. The lower end of the air outlet channel 143 is connected to the air outlet hole 13 through a connecting pipe 17, and the upper end of the air outlet channel 143 is connected to an air outlet nozzle 18 installed on the lower cavity 142.

[0046] The upper end of the valve needle 16 has a flange portion 161 extending radially outward, and a spring 19 is disposed between the upper surface of the flange portion 161 and the upper wall of the upper cavity 141.

[0047] The lower end of the valve needle 16 under the action of the spring 19 in the squeezed state blocks the above-mentioned air outlet 13, and an air intake channel 20 connected to the bottom of the flange part 161 is opened on the above-mentioned upper cavity 141. When air is injected into the upper cavity 141 through the air intake channel 20, the above-mentioned valve needle 16 moves upward to open the air outlet 13.

[0048] Air is ventilated to the area below the flange on the valve needle in the upper cavity through the air inlet channel, driving the flange to move the valve needle upward as a whole, opening the air outlet channel between the air outlet nozzle and the air outlet hole. At the same time, the vacuum generator connected to the air outlet nozzle works to discharge the gas in the barrel to the outside.

[0049] The air outlet nozzle 18 is connected to a vacuum generator.

[0050] The notched air groove 11 is located at the top of the annular raised portion 9 .

[0051] A plurality of reinforcing ribs 23 are provided in the cavity 8 , thereby isolating the cavity 8 into a plurality of sub-cavities 81 . Each of the reinforcing ribs 23 is provided with at least one vent hole 231 communicating with adjacent sub-cavities 81 .

[0052] One end of the reinforcing rib 23 extending in the radial direction of the main body 1 is close to the through hole 7 , and the other end extends to the edge of the main body 1 .

[0053] At least two positioning pins 24 for cooperating with the glue barrel are installed on the carrier plate 1 .

[0054] The fixed ends of adjacent lifting cylinders 3 are connected by a transverse plate 25 .

[0055] The sub-cavity 81 formed between two adjacent reinforcing ribs 23 is a fan-shaped sub-cavity.

[0056] The three lifting cylinders 3 are arranged in an equilateral triangle shape.

[0057] Applicable glue: one-component or two-component, high-filler, high-viscosity glue;

[0058] Applicable glue barrel packaging: 5 gallons.

[0059] Working principle: Place the incoming glue barrel just below the main body, and move the main body down into the barrel so that it has an interference fit with the inner wall of the barrel, thus forming a relatively closed area between the lower surface of the main body and the liquid level in the barrel;

[0060] The driving body continues to move downward until it contacts the liquid surface. During this process, the gas between the lower surface of the body and the liquid surface overflows into the area surrounded by the annular protrusion, and enters the cavity through the notched air groove and the air inlet through hole in sequence, and is then discharged outward through the action of the vacuum generating assembly;

[0061] The driving body continues to move downward until it reaches the bottom of the barrel. During this process, first, the gas in the area surrounded by the annular raised portion enters the cavity through the notched air groove and the air inlet hole under the action of the liquid surface pressure, and is ventilated to the area below the flange on the valve needle in the upper cavity through the air inlet channel. The driving flange drives the valve needle to move upward as a whole, opening the air outlet channel between the air outlet nozzle and the air outlet hole. At the same time, the vacuum generator connected to the air outlet nozzle works to discharge the gas in the barrel to the outside.

[0062] The driving body continues to move downward until it contacts the liquid surface. During this process, the gas in the barrel enters the cavity upward through the air inlet holes on the lower surface of the body, and is then discharged outward through the action of the vacuum generator;

[0063] Afterwards, under the action of pressure, the fluid in the barrel continuously enters the glue supply pump through the area surrounded by the through hole on the main body and the annular protrusion, so that the incoming high-viscosity glue (two-component or single-component glue, high-filler or high-viscosity glue) can be directly and stably discharged outward from the packaging barrel (usually a 5-gallon barrel) at a certain flow rate and completely avoid bubbles from mixing into the glue.

[0064] The above-mentioned large-flow glue supply mechanism is adopted, and the upper end of the annular protrusion on the upper surface of the suction cup body and located on the through hole is used to be sealed and connected to the glue supply pump, and a cavity is formed in the suction cup body and on the outer side of the through hole in the circumferential direction, and a plurality of air intake holes connected to the cavity are arranged at intervals on the lower surface of the suction cup body, and a plurality of air intake holes arranged at intervals along the circumference are opened on the inner side of the upper surface of the annular protrusion. The lower end of the air intake hole is connected to the cavity in the suction cup body, and a notched air groove connected to the air intake hole is correspondingly arranged on the inner wall of the annular protrusion. By moving the body downward in the glue barrel, the high-viscosity fluid can be directly discharged from the packaging barrel at a relatively constant speed, and the gas in the barrel can be discharged at the same time, and the situation that the glue blocks the exhaust channel before the gas is exhausted can be effectively avoided, thereby ensuring that the gas in the barrel is evenly and timely discharged before the glue is discharged outward, and avoiding bubbles mixed in during the glue discharge process and affecting the quality of the glue during subsequent use;

[0065] The cam is secured to the bottom of the valve body and is secured to the airtight seal of the valve body with respect to the air intake pipe, the cam being secured to the bottom of the valve body with respect to the air intake pipe.

[0066] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A large flow glue supply mechanism, comprising: A carrier plate (1) for placing a glue barrel and a glue supply pump (2) installed above the carrier plate (1), characterized in that: a suction cup body (5) is sealed and connected below the glue inlet end of the glue supply pump (2); three lifting cylinders (3) arranged in an equilateral triangle shape are provided on the upper surface of the carrier plate (1) and outside the glue supply pump (2); the movable end of each lifting cylinder (3) is connected to the same movable bracket (4); the movable bracket (4) that can move up and down is connected to the glue supply pump (2); at least two positioning pins (24) for cooperating with the glue barrel are installed on the carrier plate (1); the fixed ends of adjacent lifting cylinders (3) are connected by a horizontal plate (25); The outer side surface of the lower part of the suction cup body (5) which can move downward in the glue barrel is interference-fitted with the inner wall of the glue barrel. A through hole (7) is provided in the middle of the suction cup body (5) for passing the fluid in the glue barrel. An annular protrusion (9) is provided on the upper surface of the suction cup body (5) and located on the through hole (7). The upper end of the annular protrusion (9) is used for sealing connection with the glue supply pump (2). A cavity (8) is formed inside the suction cup body (5) and located on the circumferential outer side of the through hole (7); a plurality of air inlet holes (12) communicating with the cavity (8) are spaced apart on the lower surface of the suction cup body (5); a plurality of air inlet holes (10) spaced apart along the circumferential direction are formed on the inner side of the upper surface of the annular raised portion (9); the lower end of the air inlet hole (10) is communicated with the cavity (8) inside the suction cup body (5); a notch air groove (11) communicating with the air inlet hole (10) is correspondingly provided on the inner wall of the annular raised portion (9); a vacuum generating assembly (6) mounted on the upper surface of the suction cup body (5) is communicated with the cavity (8).

2. The high flow glue supply mechanism according to claim 1, characterized in that: The vacuum generating assembly (6) further includes a valve body (14) and a valve needle (16), and the upper surface of the suction cup body (5) is provided with at least one air outlet (13) connected to the cavity (8), and a valve body (14) with an upper cavity (141) and a lower cavity (142) built therein is installed directly above the air outlet (13) through a bracket (15), and the lower end of the valve needle (16) whose upper end is located in the upper cavity (141) passes through the lower cavity (142) and forms an air outlet channel (143) with the inner wall of the lower cavity (142), and the lower end of the air outlet channel (143) is connected to the air outlet (13) through a connecting pipe (17), and the upper end of the air outlet channel (143) is connected to an air outlet nozzle (18) installed on the lower cavity (142).

3. The high flow glue supply mechanism according to claim 2, characterized in that: The upper end of the valve needle (16) has a flange portion (161) extending radially outward, and a spring (19) is provided between the upper surface of the flange portion (161) and the upper inner wall of the upper cavity (141). The lower end of the valve needle (16) blocks the air outlet (13) under the action of the spring (19) in the squeezed state, and an air inlet channel (20) connected to the lower side of the flange portion (161) is provided on the upper cavity (141). When air is injected into the upper cavity (141) through the air inlet channel (20), the valve needle (16) moves upward to open the air outlet (13).

4. The high flow glue supply mechanism according to claim 3, characterized in that: The air outlet nozzle (18) is connected to a vacuum generator.

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