CN-122006978-A - Glue supply device of two-component glue dispenser

Abstract

The invention discloses a glue supply device of a two-component glue dispenser, which comprises a body matched with a glue barrel and a vacuum generating component, wherein a cavity communicated with the vacuum generating component is arranged in the body, the outer side surface of the lower part of the body which can move downwards in the glue barrel is in interference fit with the inner wall of the glue barrel, a through hole which penetrates up and down and is used for passing fluid in the glue barrel is formed in the middle part of the body, a cavity which is arranged in a circular shape is formed in the body and is positioned at the outer side of the circumferential direction of the through hole, the cavity is communicated with the vacuum generating component, the upper end of a valve needle is provided with a flange part which is outwards in the radial direction, and a spring is arranged between the upper surface of the flange part and the upper wall in the upper cavity. The invention can avoid the influence of air bubbles mixed in the glue discharging process on the quality of the subsequent glue in the using process, and can also avoid the reverse entering of the air outside the charging bucket.

Inventors

• CHEN XIAOFENG

Assignees

• 苏州卓兆点胶股份有限公司

Dates

Publication Date

20260512

Application Date

20221025

Claims (6)

1. 1. The glue supply device of the two-component glue dispenser comprises a body (1) matched with a glue barrel and a vacuum generating assembly (2), and is characterized in that a cavity (16) communicated with the vacuum generating assembly (2) is arranged in the body (1), the outer side surface of the lower part of the body (1) which can move downwards in the glue barrel is in interference fit with the inner wall of the glue barrel, a through hole (3) which is communicated up and down and is used for allowing fluid in the glue barrel to pass through is formed in the middle part of the body (1), the cavity (16) which is arranged in a circular shape is formed in the body (1) and is positioned at the outer side of the circumferential direction of the through hole (3), and the cavity (16) is communicated with the vacuum generating assembly (2); The upper surface of the body (1) is provided with an annular protruding part (4) on the through hole (3), the upper end of the annular protruding part (4) is used for being connected with the glue supply mechanism in a sealing way, a plurality of air inlet through holes (5) are formed in the inner side of the upper surface of the annular protruding part (4) at intervals along the circumferential direction, the lower end of the air inlet through holes (5) is communicated with a cavity (16) in the body (1), and a notch air groove (6) communicated with the air inlet through holes (5) is correspondingly formed in the inner wall of the annular protruding part (4); The upper surface of the body (1) is provided with at least one air outlet hole (7) communicated with the cavity (16), a vacuum generating component (2) is arranged right above the air outlet hole (7) through a bracket (8), the vacuum generating component (2) comprises a valve body (9) internally provided with an upper cavity (91) and a lower cavity (92), the lower end of a valve needle (10) with the upper end positioned in the upper cavity (91) penetrates 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 communicated with the air outlet hole (7) through a connecting pipe (12), and the upper end of the air outlet channel (93) is communicated with an air outlet nozzle (13) arranged on the lower cavity (92); The upper end of the valve needle (10) is provided with a flange part (11) which is outwards along the radial direction, a spring (14) is arranged between the upper surface of the flange part (11) and the inner upper wall of the upper cavity (91), the lower end of the valve needle (10) under the action of the spring (14) in an extrusion state is used for blocking the air outlet hole (7), the upper cavity (91) is provided with an air inlet channel (15) which is communicated to the lower part of the flange part (11), and when air is injected into the upper cavity (91) through the air inlet channel (15), the valve needle (10) moves upwards to open the air outlet hole (7).
2. 2. The glue supply device of the two-component dispenser according to claim 1, wherein a supporting cushion layer (24) is arranged between the bracket (8) and the body (1).
3. 3. The glue supply device of the two-component glue dispenser of claim 1, wherein a plurality of air inlet small holes (17) communicated with the cavity (16) are formed on the lower surface of the body (1) at intervals, and the vacuum generating component (2) is arranged on the upper surface of the body (1) and communicated with the cavity (16).
4. 4. A glue supply device of a two-component dispenser according to claim 1 or 3, wherein the air outlet hole (7) is provided with an air cover (18), and an air outlet through hole (19) matched with the lower end of the valve needle (10) is formed in the upper surface of the air cover (18).
5. 5. The glue supply device of the two-component dispenser of claim 4, wherein the air cap (18) is a conical air cap.
6. 6. The glue supply device of the two-component dispenser of claim 4, wherein a tubular protruding portion (20) is arranged on the upper surface of the body (1) and located outside the air cover (18), and the lower end of the connecting pipe (12) is connected with the tubular protruding portion (20) in a sealing manner.

Description

Glue supply device of two-component glue dispenser Technical Field The invention relates to the technical field of glue transmission, in particular to a glue supply device of a two-component dispenser. Background Glue is an intermediate for connecting two materials, is mostly in the form of water, belongs to the category of fine chemical industry, is various, and is mainly classified by adhesive materials, physical forms, hardening methods and materials of adhered objects. Common examples are instant glues, epoxy adhesives, anaerobic glues, UV glues, hot melt glues, pressure sensitive adhesives, latex and the like. In the glue fluid conveying process, the fluid viscosity is closely related to the fluid conveying operation. The fluid has low viscosity and is easy to be transported, the fluid is usually stored in a charging tank, the fluid is directly pumped from the charging barrel to a corresponding metering unit by adopting a pneumatic diaphragm pump or an electric pump, and if the fluid has high viscosity, the fluid is difficult to be transported by adopting the diaphragm pump and the electric pump. In the prior art, for the fluid with high viscosity, generally, a continuously pressing pressure plate is arranged on the surface of the glue, the glue is conveyed to the glue injection device through a feeding pipeline by the pressure of the pressure plate, but due to the fact that the surface viscosity of the glue in the glue barrel is higher, the pressure plate is not completely attached to the surface of the glue, some gas can be sealed when the pressure plate presses the glue, bubbles possibly exist in the glue in the barrel body, and external gas enters a glue outlet channel, so that bubbles are mixed in the glue which is output outwards from the glue barrel, and the quality of the glue supply is affected. Disclosure of Invention The invention aims to solve the technical problem of providing a glue supply device of a two-component glue dispenser, which can prevent air bubbles from being mixed in the glue discharging process to influence the quality of the subsequent glue in the use process and can also prevent the air outside a charging basket from reversely entering. In order to solve the technical problems, the technical scheme adopted by the invention is that the glue feeding device of the two-component glue dispenser comprises a body matched with a glue barrel and a vacuum generating assembly, wherein a cavity communicated with the vacuum generating assembly is arranged in the body, the outer side surface of the lower part of the body which can downwards move in the glue barrel is in interference fit with the inner wall of the glue barrel, a through hole which is vertically communicated and is used for passing fluid in the glue barrel is formed in the middle part of the body, and the cavity which is arranged in a circular shape is formed in the body and is positioned at the outer side of the circumference of the through hole and is communicated with the vacuum generating assembly; The upper surface of the body is provided with an annular bulge part on the through hole, the upper end of the annular bulge part is used for being connected with the glue supply mechanism in a sealing way, a plurality of air inlet through holes are formed in the inner side of the upper surface of the annular bulge part at intervals along the circumferential direction, the lower end of the air inlet through holes is communicated with a cavity in the body, and a notch air groove communicated with the air inlet through holes is correspondingly formed in the inner wall of the annular bulge part; The upper surface of the body is provided with at least one air outlet hole communicated with the cavity, a vacuum generating component is arranged right above the air outlet hole through a bracket, the vacuum generating component comprises a valve body internally provided with an upper cavity and a lower cavity, the lower end of a valve needle with the upper end positioned in the upper cavity penetrates 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 communicated with the air outlet hole through a connecting pipe, and the upper end of the air outlet channel is communicated with an air outlet nozzle arranged on the lower cavity; The upper end of the valve needle is provided with a flange part which is outwards along the radial direction, a spring is arranged between the upper surface of the flange part and the upper wall in the upper cavity, the lower end of the valve needle under the action of the spring in an extrusion state seals the air outlet, the upper cavity is provided with an air inlet channel which is communicated to the lower part of the flange part, and when air is injected into the upper cavity through the air inlet channel, the valve needle moves upwards to open the air outlet. The further improved scheme in the technical scheme i