CN108514994A - A kind of high speed mode separation strapping resorption function glue dispensing valve - Google Patents

Abstract

The present invention relates to a kind of high speed mode separation strapping resorption function glue dispensing valves, including cylinder block, glue room block and the Jiao Zui being sequentially communicated from top to bottom, it is provided with step in the block of the glue room, diaphragm is installed at the top of the step, running through in the cylinder block and glue room block has upper connecting shaft, running through in glue room block and glue mouth has lower connecting shaft, the upper connecting shaft to offset with the lower connecting shaft across the diaphragm；It is an advantage of the invention that：Using diaphragm type power transmission, high-pressure glue room and actuating cylinder diaphragm is completely separated, utilize the special shape and toughness of diaphragm, diaphragm itself deforms upon when being opened and closed above and below glue valve, it ensure that the transmission of axial power makes glue firmly be interposed between in glue room again, effectively avoid the case where glue reversely overflows；Jiao Zui designs are coupled using the reversed conical surface, and closed glue room generates negative pressure in the instant glue room for closing glue valve again while closing glue valve, and a part of glue is drawn back into glue room, to cut off Jiao Lu rapidly, avoid drawing glue.

Description

A high-speed diaphragm with suction function dispensing valve

technical field

The invention relates to the field of electronics, in particular to a dispensing valve with a high-speed diaphragm belt and suction function.

Background technique

Dispensing valves are widely used in many manufacturers of consumer electronics, automobiles, and home appliances. At present, the existing dispensing valves on the market are easy to pull glue (without sucking back) when dispensing glue. When used for a long time, because the shaft of the power cylinder is directly connected to the striker and sealed with an ordinary shaft and sealing ring, it is easy to glue at high pressure. Glue overflows upwards to the interior of the power cylinder, causing damage to the rubber valve.

The present invention mainly solves the above two problems, namely: 1. The diaphragm-type power transmission is adopted to completely separate the high-pressure rubber chamber from the power cylinder with a diaphragm. By utilizing the special shape and toughness of the diaphragm, the diaphragm itself can be generated when the rubber valve is opened and closed. Deformation ensures the transmission of axial power and keeps the glue firmly in the glue chamber, effectively avoiding the reverse overflow of the glue; 2. The design of the glue nozzle adopts the precise fit of reverse cone While closing the glue valve, the glue chamber is sealed, and a negative pressure is generated in the glue chamber at the moment of closing the glue valve, and a part of the glue is sucked back into the glue chamber to seal it, so as to quickly cut off the glue path and avoid the situation of glue pulling.

Invention content:

The object of the present invention is to provide a high-speed diaphragm belt dispensing valve with back-suction function.

The technical solution of the present invention is: a dispensing valve with a high-speed diaphragm belt suction function, including a cylinder block, a glue chamber block and a glue nozzle connected in sequence from top to bottom, and a step is arranged in the glue chamber block, and the step A diaphragm is installed on the top, an upper connecting shaft runs through the cylinder body and the glue chamber block, a lower connecting shaft runs through the glue chamber block and the glue nozzle, and the upper connecting shaft passes through the diaphragm and the The lower connecting shaft is offset.

Further: a thimble runs through the inside of the nozzle, and the top of the thimble is in conflict with the bottom of the lower coupling shaft.

Further: the thimble is a tapered striker.

Further: the cylinder body is also provided with a piston, the bottom of the piston is connected to the top of the upper connecting shaft, the top of the piston is connected to a piston rod, and the top of the cylinder body is sealed with a piston cover.

Further: the piston and the piston rod are connected by screws.

Further: the bottom of the cylinder block is provided with an installation step, and a mounting seat is clamped on the installation step, and a sealing ring covering the upper connecting shaft is installed in the mounting seat.

Further: the glue nozzle includes a tapered cavity communicated with the glue chamber block and a glue nozzle opening connected to the sharp corner of the tapered cavity, and a glue nozzle fixing ring is installed at the bottom of the glue nozzle opening.

Further: the diaphragm is a flexible diaphragm.

Compared with the prior art, the advantages of the present invention are: 1. The diaphragm-type power transmission is adopted to completely separate the high-pressure rubber chamber from the power cylinder with a diaphragm, and the special shape and toughness of the diaphragm are used to make the diaphragm open and close when the rubber valve is up and down. Deformation occurs by itself, which not only ensures the transmission of axial power but also keeps the glue firmly in the glue chamber, effectively avoiding the reverse overflow of glue; 2. The glue nozzle design adopts the precise fit of reverse cone coupling, that is Ensure that the glue chamber is sealed while the glue valve is closed, and a negative pressure is generated in the glue chamber at the moment of closing the glue valve, and a part of the glue is sucked back into the glue chamber to seal it, so as to quickly cut off the glue path and avoid the situation of glue pulling.

Description of drawings

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work fall within the protection scope of the present invention:

Fig. 1 is an axial sectional view of the present invention;

Fig. 2 is the structural representation when the rubber valve of the present invention is closed;

Fig. 3 is the structural representation when the rubber valve of the present invention is opened;

Among them: 1. Cylinder block; 2. Rubber chamber block; 3. Diaphragm; 4. Lower connecting shaft; 5. Thimble; 6. Tapered cavity; 7. Piston; .Piston cover; 11. Screw; 12. Rubber nozzle fixing ring; 13. Seal ring; 14. Mounting seat; 15. Rubber nozzle mouth; 16. Step;

Detailed ways

Embodiment: A high-speed diaphragm with a suction function dispensing valve shown in Figures 1 to 3, including a cylinder block 1, a glue chamber block 2 and a glue nozzle connected in sequence from top to bottom, the glue chamber block 2 There is a step 16 inside, a diaphragm 3 is installed on the top of the step 16, an upper connecting shaft 8 runs through the cylinder body 1 and the glue chamber block 2, and a lower connecting shaft runs through the glue chamber block 2 and the glue nozzle 4. The upper connecting shaft 8 passes through the diaphragm 3 and abuts against the lower connecting shaft 4 .

A thimble 5 runs through the inside of the nozzle, and the top of the thimble 5 collides with the bottom of the lower connecting shaft 4 . The ejector pin 5 is a tapered striker.

Also be provided with piston 7 in described cylinder body 1, the bottom of described piston 7 is connected with the top of described upper connecting shaft 8, and the top of described piston 7 is connected with piston rod 9, and described piston 7 and piston rod 9 are connected by screws 11. The top of the cylinder block 1 is sealed with a piston cover 10 .

The bottom of the cylinder block 1 is provided with an installation step 17 , and the installation step 17 is fastened with a mounting seat 14 , and a sealing ring 13 covering the upper connecting shaft 8 is installed in the mounting seat 14 .

The glue nozzle includes a tapered cavity 6 communicated with the glue chamber block 2 and a glue mouth 15 connected to the sharp corner of the tapered cavity 6, and the bottom of the glue mouth 15 is equipped with a glue nozzle to fix Ring 12.

The diaphragm 3 is a flexible diaphragm, which is easy to deform and not easy to break.

When the glue valve is closed, the tapered striker 5 and the glue chamber block 2 form a sealed cavity, and the moment the glue chamber rises and closes, the glue chamber lifts up and increases, and the pressure decreases due to the principle of constant temperature and volume increase, so that negative pressure is generated in the glue chamber. Pressure, that is, the function of sucking back, can quickly cut off the glue path.

When the glue valve is opened, a gap is formed on the contact surface between the thimble 5 and the glue chamber block 2, and the glue can overflow from the gap to the mouth of the glue nozzle 15. Due to the whole process, the diaphragm 3 is sandwiched between the upper connecting shaft 8 and the lower connecting shaft 4. The flexibility of the diaphragm 3 enables effective transmission of axial power without friction, avoiding glue leakage.

It should be noted that, in this document, terms such as "comprising", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements , but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or equipment.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the schemes in the various embodiments can also be properly combined to form other implementation manners that can be understood by those skilled in the art.

Claims (8)

1. A dispensing valve with a high-speed diaphragm belt suction function, characterized in that: it includes a cylinder block, a glue chamber block and a glue nozzle connected sequentially from top to bottom, and a step is arranged in the glue chamber block, and the top of the step A diaphragm is installed, an upper connecting shaft runs through the cylinder body and the glue chamber block, a lower connecting shaft runs through the glue chamber block and the glue nozzle, and the upper connecting shaft passes through the diaphragm and the lower Even the shaft is offset. 2. A dispensing valve with high-speed diaphragm belt suction function according to claim 1, characterized in that: a thimble runs through the inside of the nozzle, and the top of the thimble conflicts with the bottom of the lower connecting shaft. 3. A dispensing valve with high-speed diaphragm belt suction function according to claim 2, characterized in that: the thimble is a tapered striker. 4. A dispensing valve with high-speed diaphragm belt suction function according to claim 1, characterized in that: a piston is also arranged in the cylinder body, the bottom of the piston is connected with the top of the upper coupling shaft, The top of the piston is connected with a piston rod, and the top of the cylinder body is sealed with a piston cover. 5. A dispensing valve with high-speed diaphragm belt suction function according to claim 4, characterized in that: the piston and the piston rod are connected by screws. 6. A dispensing valve with high-speed diaphragm belt suction function according to claim 1, characterized in that: the bottom of the cylinder block is provided with an installation step, and the installation step has a fixed mounting seat, and the mounting seat A sealing ring covering the upper connecting shaft is installed inside. 7. A dispensing valve with high-speed diaphragm belt suction function according to claim 1, characterized in that: the glue nozzle includes a conical cavity connected to the glue chamber block and connected to the conical cavity The mouth of the mouth of the glue mouth at the sharp corner, the bottom of the mouth of the mouth of the glue mouth is installed with the mouth of the glue mouth. 8. A dispensing valve with high-speed diaphragm with suction function according to claim 1, characterized in that: the diaphragm is a flexible diaphragm.