Dispensing machine high-viscosity glue transmission device

Abstract

This invention discloses a high-viscosity adhesive transfer device for a dispensing machine, comprising: a body that cooperates with an adhesive container and a vacuum generating component. The body has a cavity communicating with the vacuum generating component. The outer side of the lower part of the body, which can move downwards within the adhesive container, is interference-fitted with the inner wall of the adhesive container. A through-hole, penetrating vertically through the middle of the body, allows fluid from the adhesive container to pass through. A cavity is formed within the body, located circumferentially outside the through-hole, and communicates with the vacuum generating component. A plurality of small air inlet holes communicating with the cavity are spaced apart on the lower surface of the body. An annular baffle is provided at the edge of the upper surface of the body. This invention can completely expel the gas inside the container before dispensing adhesive, prevent the backflow of gas from outside the container in the non-venting state, and effectively prevent adhesive from blocking the venting channel before the gas is completely expelled.

Description

Technical Field

[0001] This invention relates to the field of adhesive transfer technology, and in particular to a high-viscosity adhesive transfer device for a dispensing machine. Background Technology

[0002] In the process of conveying adhesive fluids, the fluid viscosity is closely related to the fluid conveying operation. Fluids with low viscosity are easy to transport, and are usually stored in tanks, with pneumatic diaphragm pumps or electric pumps used to directly pump the fluid from the tank to the corresponding metering unit. If the fluid viscosity is high, it is difficult to handle the transport using diaphragm pumps and electric pumps.

[0003] In existing technologies, high-viscosity fluids are typically transported using a pressure plate pump. The pressure plate pump consists of a pressure plate, a pressure rod, a dispensing chamber, a pneumatic motor, and dispensing pipes. The pressure plate enters the glue tank and moves up and down with the glue surface. The glue in the tank is pulled up and down by the pressure rod into the dispensing chamber, where a unidirectional flow structure restricts backflow. However, due to the high surface viscosity of the glue in the tank, the pressure plate does not completely adhere to the glue surface. This causes some air to be trapped when the pressure plate presses down on the glue. Additionally, air bubbles may exist within the glue itself inside the tank, and external air may enter the dispensing channel, resulting in air bubbles being mixed into the glue output from the tank, affecting the quality of the dispensing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-viscosity adhesive transfer device for a dispensing machine. This high-viscosity adhesive transfer device can not only exhaust all the gas in the barrel before dispensing the adhesive, but also prevent the reverse entry of gas from outside the barrel in the non-venting state, and can also effectively prevent the adhesive from blocking the venting channel before the gas is completely exhausted.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a high-viscosity glue transfer device for a dispensing machine, comprising: a body that cooperates with a glue container and a vacuum generating component, wherein a cavity communicating with the vacuum generating component is provided in the body, the outer side of the lower part of the body that can move downward in the glue container is interference-fitted with the inner wall of the glue container, a through hole is opened in the middle of the body for fluid in the glue container to pass through, a cavity is formed in the body and located on the outer side of the through hole, the cavity is communicating with the vacuum generating component, a plurality of air inlet holes communicating with the cavity are spaced apart on the lower surface of the body, and an annular baffle is provided at the edge of the upper surface of the body; The upper surface of the body has an annular protrusion located on the through hole. The upper end of the annular protrusion is used for sealing connection with the glue supply mechanism. Several air inlet holes are opened on the inner side of the upper surface of the annular protrusion and are spaced apart along the circumference. The lower end of the air inlet holes is connected to the cavity inside the body. A notch groove is correspondingly installed on the inner wall of the annular protrusion and is connected to the air inlet holes. The upper surface of the main body has at least one vent hole communicating with the cavity. A vacuum generating assembly is mounted above the vent hole via a bracket. The vacuum generating assembly includes: a valve body with an upper cavity and a lower cavity inside; the lower end of a valve needle located in the upper cavity passes through the lower cavity and forms an vent channel between the lower cavity and the inner wall of the lower cavity; the lower end of the vent channel is connected to the vent hole via a connecting pipe; and the upper end of the vent channel is connected to a vent nozzle mounted on the lower cavity. The upper end of the valve needle has a radially outward flange. A spring is provided between the upper surface of the flange and the upper wall of the upper cavity. When the valve needle is under the action of the spring in a compressed state, the lower end of the valve needle blocks the air outlet. An air inlet channel is provided on the upper cavity, which connects to the lower part of the flange. When air is injected into the upper cavity through the air inlet channel, the valve needle moves upward and opens the air outlet.

[0006] The following are further improvements to the above technical solution: 1. In the above scheme, the vacuum generating component is installed on the upper surface of the body and communicates with the cavity.

[0007] 2. In the above scheme, an air cover is provided on the air outlet, and an air outlet through hole that cooperates with the lower end of the valve needle is opened on the upper surface of the air cover.

[0008] 3. In the above scheme, the air outlet is connected to a vacuum generator.

[0009] 4. In the above scheme, a first sealing ring is provided between the flange portion, which has a clearance fit between its outer surface and the inner wall of the upper cavity, and the upper cavity.

[0010] 5. In the above scheme, an annular groove containing a second sealing ring is formed on the upper surface of the annular protrusion and along the entire circumference outside the air inlet hole.

[0011] 6. In the above scheme, the diameter of the bottom of the body is larger than the inner diameter of the glue container.

[0012] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The present invention relates to a high-viscosity adhesive transfer device for a dispensing machine. The upper end of an annular protrusion located on the upper surface of the main body and above a through-hole is used for a sealed connection with the adhesive supply mechanism. Several circumferentially spaced air inlets are provided on the inner side of the upper surface of the annular protrusion. The lower end of each air inlet communicates with a cavity inside the main body. Correspondingly, air grooves communicating with the air inlets are installed on the inner wall of the annular protrusion. By moving the main body downwards within the adhesive container, the high-viscosity fluid can be directly output from the packaging container at a relatively constant speed. Furthermore, the gas inside the container can be expelled before the adhesive is output, preventing air bubbles from mixing into the adhesive during the discharge process and affecting subsequent processes. To ensure the quality of the adhesive during use; furthermore, its air inlet channel connects the upper cavity below the flange to the outside. When air is injected into the upper cavity through the air inlet channel, the valve needle moves upward to open the air outlet. 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 nozzle installed on the lower cavity. The upper end of the valve needle has a radially outward flange. A spring is provided between the upper surface of the flange and the upper wall of the upper cavity. The valve needle moves upward to open the air outlet. It can also tightly seal the air outlet in the non-venting state to prevent gas outside the material tank from entering back and generating new air bubbles that mix into the output adhesive.

[0013] 2. The high-viscosity adhesive transfer device of the present invention has a cavity formed inside the main body and on the outer side of the through hole. Several small air inlets communicating with the cavity are spaced apart on the lower surface of the main body. The vacuum generating component is installed on the upper surface of the main body and communicates with the cavity. Through the cooperation of the small air inlets, the air inlets and the vacuum generating component, the situation of adhesive blocking the exhaust channel before the gas is exhausted can be effectively avoided. This ensures that the gas in the bucket is evenly and timely discharged before the adhesive is output, which facilitates the use of the adhesive after output and prevents the occurrence of discontinuity in adhesive supply caused by the generation of air bubbles in the adhesive. Attached Figure Description

[0014] Appendix Figure 1 This is a first-view structural schematic diagram of the high-viscosity adhesive transfer device for the dispensing machine of the present invention; Appendix Figure 2 This is a second-view structural schematic diagram of the high-viscosity adhesive transfer device for the dispensing machine of the present invention; Appendix Figure 3 This is a partial cross-sectional perspective view of the high-viscosity adhesive transfer device of the dispensing machine of the present invention; Appendix Figure 4 Appendix to this invention Figure 3 Enlarged view of point A; Appendix Figure 5 This is a cross-sectional perspective view of the high-viscosity adhesive transfer device of the dispensing machine of the present invention; Appendix Figure 6 Appendix to this invention Figure 5 Enlarged diagram of point B.

[0015] In the above attached figures: 1. Body; 2. Vacuum generating component; 3. Through hole; 4. Annular protrusion; 5. Air inlet through hole; 6. Notched air groove; 7. Air outlet hole; 8. Support; 9. Valve body; 91. Upper cavity; 92. Lower cavity; 93. Air outlet channel; 10. Valve needle; 11. Flange; 12. Connecting pipe; 13. Air outlet nozzle; 14. Spring; 15. Air inlet channel; 16. Cavity; 17. Small air inlet hole; 18. Air cover; 19. Air outlet through hole; 20. Tubular protrusion; 21. First sealing ring; 22. Second sealing ring; 23. Annular groove; 24. Support pad; 25. Annular baffle. Detailed Implementation

[0016] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0017] Example 1: A high-viscosity adhesive transfer device for a dispensing machine, comprising: a body 1 that cooperates with an adhesive container and a vacuum generating component 2. The body 1 is provided with a cavity 16 that communicates with the vacuum generating component 2. The outer side of the lower part of the body 1, which can move downward in the adhesive container, is press-fitted with the inner wall of the adhesive container. A through hole 3 is provided in the middle of the body 1, which is vertically open and allows fluid in the adhesive container to pass through. The upper surface of the body 1 and the through hole 3 have an annular protrusion 4. The upper end of the annular protrusion 4 is used for sealing connection with the glue supply mechanism. A plurality of air inlet holes 5 are provided on the inner side of the upper surface of the annular protrusion 4, which are spaced apart in the circumferential direction. The lower end of the air inlet hole 5 is connected to the cavity 16 inside the body 1. The inner wall of the annular protrusion 4 is provided with a notch 6 that is connected to the air inlet hole 5. The drive 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 flows into the area enclosed by the annular protrusion and enters the cavity through the notch gas groove and the air inlet hole in sequence. Then, it is discharged outward by the action of the vacuum generating component. The drive body continues to move down until it reaches the bottom of the barrel. During this process, firstly, the gas in the area enclosed by the annular protrusion enters the cavity through the notch gas groove and the air inlet hole in sequence under the action of the liquid surface pressure.

[0018] The upper surface of the body 1 has at least one air outlet 7 communicating with the cavity 16. A vacuum generating assembly 2 is installed directly above the air outlet 7 via a bracket 8. The vacuum generating assembly 2 includes: a valve body 9 with an upper cavity 91 and a lower cavity 92 inside, and a vacuum generator communicating with the lower cavity 92. The lower end of the valve needle 10, whose upper end is located in the upper cavity 91, passes through the lower cavity 92 and forms an air outlet channel 93 between it and the inner wall of the lower cavity 92. The lower end of the air outlet channel 93 is connected to the air outlet 7 via a connecting pipe 12. The upper end of the air outlet channel 93 is connected to an air outlet nozzle 13 installed on the lower cavity 92. The upper end of the valve needle 10 has a radially outward flange 11. A spring 14 is provided between the upper surface of the flange 11 and the upper wall of the upper cavity 91. When the spring 14 is in a compressed state, the lower end of the valve needle 10 blocks the air outlet 7. An air inlet channel 15 is provided on the upper cavity 91, which connects to the lower part of the flange 11. When air is injected into the upper cavity 91 through the air inlet channel 15, the valve needle 10 moves upward to open the air outlet 7.

[0019] A cavity 16 is formed inside the main body 1 and on the outer side of the through hole 3. Several small air inlet holes 17 communicating with the cavity 16 are spaced apart on the lower surface of the main body 1. The vacuum generating component 2 is installed on the upper surface of the main body 1 and communicates with the cavity 16.

[0020] An air cover 18 is provided on the air outlet 7, and an air outlet 19 is provided on the upper surface of the air cover 18 to cooperate with the lower end of the valve needle 10.

[0021] A tubular protrusion 20 is provided on the upper surface of the main body 1 and outside the air cover 18, and the lower end of the connecting pipe 12 is sealed to the tubular protrusion 20.

[0022] A first sealing ring 21 is provided between the flange portion 11, whose outer surface is in clearance fit with the inner wall of the upper cavity 91, and the upper cavity 91.

[0023] The aforementioned body 1 is obtained by integral molding of thermoplastic resin.

[0024] A support pad 24 is provided between the bracket 8 and the body 1.

[0025] An annular baffle 25 is provided at the edge of the upper surface of the aforementioned body 1.

[0026] Example 2: A high-viscosity adhesive transfer device for a dispensing machine, applied in the field of heat dissipation of automotive electronic controllers, comprising: a body 1 that cooperates with an adhesive tank and a vacuum generating component 2, wherein a cavity 16 communicating with the vacuum generating component 2 is provided inside the body 1; The outer side of the lower part of the body 1, which can move downward inside the glue container, is press-fitted with the inner wall of the glue container. A through hole 3 is provided in the middle of the body 1, which is open from top to bottom and allows the fluid in the glue container to pass through. The upper surface of the body 1 and the through hole 3 have an annular protrusion 4, the upper end of which is used for sealing connection with the glue supply mechanism. The inner side of the upper surface of the annular protrusion 4 is provided with a plurality of air inlet holes 5 arranged circumferentially. The lower end of the air inlet hole 5 is connected to the cavity 16 inside the body 1. The inner wall of the annular protrusion 4 is provided with a notch air groove 6 that is connected to the air inlet hole 5. By moving the main body downwards inside the glue container, the high-viscosity fluid can be output directly from the packaging container at a relatively constant speed. At the same time, all the gas in the container can be discharged before the glue is discharged, so as to avoid the air bubbles from being mixed in during the glue discharge process and affecting the quality of the glue in subsequent use.

[0027] The vacuum generating assembly 2 further includes a valve body 9 and a valve needle 10. The upper surface of the body 1 has at least one air outlet 7 communicating with the cavity 16. The valve body 9, which has an upper cavity 91 and a lower cavity 92, is installed directly above the air outlet 7 via a bracket 8. The lower end of the valve needle 10, located in the upper cavity 91, passes through the lower cavity 92 and forms an air outlet channel 93 between it and the inner wall of the lower cavity 92. The lower end of the air outlet channel 93 is connected to the air outlet 7 through a connecting pipe 12, and the upper end of the air outlet channel 93 is connected to an air outlet nozzle 13 installed on the lower cavity 92. The upper end of the valve needle 10 has a radially outward flange 11. A spring 14 is provided between the upper surface of the flange 11 and the upper wall of the upper cavity 91. When the spring 14 is in a compressed state, the lower end of the valve needle 10 blocks the air outlet 7. An air inlet channel 15 is provided on the upper cavity 91, which connects to the lower part of the flange 11. When air is injected into the upper cavity 91 through the air inlet channel 15, the valve needle 10 moves upward to open the air outlet 7.

[0028] Air is introduced into the area below the flange of the valve needle in the upper cavity through the air inlet channel, driving the flange to move the valve needle upward and 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. The vent can be tightly sealed when not venting to prevent gas from entering the material tank from the outside.

[0029] A plurality of air inlet holes 17 communicating with the cavity 16 are spaced apart on the lower surface of the main body 1. The vacuum generating component 2 is installed on the upper surface of the main body 1 and communicates with the cavity 16.

[0030] An air cover 18 is provided on the air outlet 7, and an air outlet 19 is provided on the upper surface of the air cover 18 to cooperate with the lower end of the valve needle 10.

[0031] The aforementioned air hood 18 is a cone-shaped air hood.

[0032] A tubular protrusion 20 is provided on the upper surface of the main body 1 and outside the air cover 18, and the lower end of the connecting pipe 12 is sealed to the tubular protrusion 20.

[0033] The aforementioned air outlet 13 is connected to a vacuum generator.

[0034] An annular groove 23 containing a second sealing ring 22 is formed on the upper surface of the aforementioned annular protrusion 4 and along the entire circumference outside the air inlet 5.

[0035] The diameter of the bottom of the aforementioned body 1 is larger than the inner diameter of the glue container.

[0036] The aforementioned cavity 16 is a circular cavity.

[0037] An annular baffle 25 is provided at the edge of the upper surface of the aforementioned body 1.

[0038] Suitable adhesives: single-component or two-component, high-filler, high-tack adhesives; Suitable for 5-gallon glue container packaging.

[0039] Working principle: The glue container for the incoming material is placed directly below the main body, and the main body is moved down into the container so that it is interference-fitted with the inner wall of the container, thereby forming a relatively sealed area between the lower surface of the main body and the liquid surface in the container. The drive 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 flows into the area enclosed by the annular protrusion and enters the cavity through the notch gas groove and the air inlet hole in sequence. Then, it is discharged outward by the action of the vacuum generating component. The drive body continues to move down until the bottom of the barrel. During this process, firstly, the gas in the area surrounded by the annular protrusion enters the cavity through the notch gas groove and the air inlet hole under the action of the liquid surface pressure. It then passes through the air inlet channel to the area below the valve needle flange in the upper cavity. The drive flange drives the valve needle to move up as a whole, opening the air outlet channel between the air outlet and the air outlet hole. At the same time, the vacuum generator connected to the air outlet works to discharge the gas in the barrel to the outside. The drive body continues to move downwards until it contacts the liquid surface. During this process, the gas inside the barrel enters the cavity through the small air inlet on the lower surface of the body, and is then discharged outwards by the action of the vacuum generator. Subsequently, under pressure, the fluid inside the barrel continuously enters the glue supply pump through the through holes and the annular protrusions on the main body, so that the high-viscosity glue (two-component or one-component glue, high filler or high viscosity glue) is directly and stably output from the packaging barrel (usually a 5-gallon barrel) at a certain flow rate, and air bubbles can be completely avoided from being mixed into the glue.

[0040] The high-viscosity glue transfer device of the above-mentioned dispensing machine has an annular protrusion on the upper surface of the main body and located on the through hole, which is used to seal the glue supply mechanism. Several air inlet holes are provided on the inner side of the upper surface of the annular protrusion, which are arranged circumferentially. The lower end of the air inlet hole is connected to the cavity inside the main body. The inner wall of the annular protrusion is correspondingly provided with a notch air groove that is connected to the air inlet hole. By moving the main body down in the glue barrel, the high-viscosity fluid can be output directly from the packaging barrel at a relatively constant speed. At the same time, all the gas in the barrel can be discharged before the glue is discharged, so as to avoid the air bubbles mixed in during the glue discharge process and affect the quality of the glue in the subsequent use process. Furthermore, the lower end of the valve needle 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 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. The upper end of the valve needle has a radially outward flange. A spring is provided between the upper surface of the flange and the upper wall of the upper cavity. When the valve needle moves upward, it opens the air outlet hole. In the non-venting state, the air outlet hole can be tightly sealed to prevent gas outside the material tank from entering in reverse and generating new air bubbles that mix into the output glue. Furthermore, a cavity is formed inside the main body and on the outer side of the through hole. Several small air inlets communicating with the cavity are spaced apart on the lower surface of the main body. The vacuum generating component is installed on the upper surface of the main body and communicates with the cavity. Through the cooperation of the small air inlets, the air inlets and the vacuum generating component, the situation of glue blocking the exhaust channel before the gas is exhausted can be effectively avoided. This ensures that the gas in the bucket is evenly and timely discharged before the glue is output, which facilitates the use of the glue after output and prevents the generation of air bubbles in the glue from causing the glue supply to be interrupted.

[0041] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A high-viscosity adhesive transfer device for a dispensing machine, comprising: The body (1) and vacuum generating component (2) that cooperate with the glue container are characterized in that: a cavity (16) communicating with the vacuum generating component (2) is provided in the body (1); the outer side of the lower part of the body (1) that can move downward in the glue container is press-fitted with the inner wall of the glue container; a through hole (3) is opened in the middle of the body (1) for the fluid in the glue container to pass through; a cavity (16) is formed in the body (1) and on the outer side of the through hole (3) in the circumferential direction; the cavity (16) is communicating with the vacuum generating component (2); a number of air inlet holes (17) communicating with the cavity (16) are spaced apart on the lower surface of the body (1); and an annular baffle (25) is provided at the edge of the upper surface of the body (1). The upper surface of the body (1) and located on the through hole (3) has an annular protrusion (4). The upper end of the annular protrusion (4) is used for sealing connection with the glue supply mechanism. Several air inlet holes (5) are opened on the inner side of the upper surface of the annular protrusion (4) and are spaced apart in the circumferential direction. The lower end of the air inlet hole (5) is connected to the cavity (16) inside the body (1). The inner wall of the annular protrusion (4) is correspondingly provided with a notch air groove (6) that is connected to the air inlet hole (5). The upper surface of the body (1) has at least one air outlet (7) communicating with the cavity (16). A vacuum generating assembly (2) is installed directly above the air outlet (7) via a bracket (8). The vacuum generating assembly (2) includes: a valve body (9) with an upper cavity (91) and a lower cavity (92) inside. The lower end of a valve needle (10) located in the upper cavity (91) passes through the lower cavity (92) and forms an air outlet channel (93) with the inner wall of the lower cavity (92). The lower end of the air outlet channel (93) is connected to the air outlet (7) via a connecting pipe (12). The upper end of the air outlet channel (93) is connected to an air outlet nozzle (13) installed on the lower cavity (92). The upper end of the valve needle (10) has a radially outward flange (11). A spring (14) is provided between the upper surface of the flange (11) and the upper wall of the upper cavity (91). When the valve needle (10) is under the action of the spring (14) in a compressed state, the lower end of the valve needle (10) blocks the air outlet (7). An air inlet channel (15) is provided on the upper cavity (91) and connects to the lower part of the flange (11). When air is injected into the upper cavity (91) through the air inlet channel (15), the valve needle (10) moves upward and opens the air outlet (7).

2. The high-viscosity adhesive transfer device for a dispensing machine according to claim 1, characterized in that: The vacuum generating component (2) is installed on the upper surface of the body (1) and communicates with the cavity (16).

3. The high-viscosity adhesive transfer device for a dispensing machine according to claim 1 or 2, characterized in that: An air cover (18) is provided on the air outlet (7), and an air outlet through hole (19) that cooperates with the lower end of the valve needle (10) is opened on the upper surface of the air cover (18).

4. The high-viscosity adhesive transfer device for a dispensing machine according to claim 3, characterized in that: The air outlet (13) is connected to a vacuum generator.

5. The high-viscosity adhesive transfer device for a dispensing machine according to claim 3, characterized in that: A first sealing ring (21) is provided between the flange (11) that has a clearance fit with the inner wall of the upper cavity (91) and the upper cavity (91).

6. The high-viscosity adhesive transfer device for a dispensing machine according to claim 1, characterized in that: An annular groove (23) containing a second sealing ring (22) is formed on the upper surface of the annular protrusion (4) and on the outer side of the air inlet hole (5) along the entire circumference.

7. The high-viscosity adhesive transfer device for a dispensing machine according to claim 1, characterized in that: The diameter of the bottom of the body (1) is greater than the inner diameter of the glue container.

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