CN103041956B - Dispensing valve - Google Patents

Abstract

The invention discloses a dispensing valve which comprises a diaphragm, a rubber nozzle, a plunger, a hollow cylinder body and a rubber storage body. The cylinder body is fixedly butted with the glue storage body, so that a sealing cavity is formed by the cylinder body and the hollow structure of the glue storage body together, the outer side of the diaphragm is fixedly pressed between the cylinder body and the glue storage body, the diaphragm separates the sealing cavity to form a glue storage cavity and a plunger movable cavity, the cylinder body is provided with an inlet and an outlet which are communicated with the plunger movable cavity, the glue storage body is provided with a glue conveying port which is communicated with the glue storage cavity, the glue nozzle is hermetically arranged on the glue storage body and seals the opening of the glue storage cavity, the glue nozzle is provided with a glue dispensing channel which is communicated with the glue storage cavity, the plunger is slidably contained in the plunger movable cavity, one end of the plunger penetrates through the diaphragm and extends into the glue dispensing channel, the plunger extends into the glue dispensing channel, and the inner side of the diaphragm is fixed with the plunger, so that the glue dispensing of.

Description

Dispensing valve

technical field

The invention relates to a dispensing valve, in particular to a dispensing valve with reliable and more durable dispensing.

Background technique

With the continuous development of the economy and the continuous progress of science and technology, all kinds of equipment used in industry are developing in the direction of intelligence, high integration and high efficiency to meet the requirements of automated operations and achieve precision manufacturing Purpose.

As we all know, in order to improve the wear resistance of circular saw blades, in addition to reasonable design on the material of circular saw blades and the manufacturing process of circular saw blades, another best way is to A wear-resistant alloy welding piece is welded on the teeth of the disc saw blade. The welding piece is composed of a patch and a cutter head and makes the teeth of the saw blade more wear-resistant, so as to reduce the cost of the saw blade.

At present, the equipment that welds the welding piece on the teeth of the saw blade is called a saw blade welding machine, and the saw blade welding machine is mainly composed of a high-frequency heating mechanism, a welding piece conveying mechanism, a dispensing mechanism, a saw blade conveying mechanism, It consists of a saw blade alignment mechanism and a saw blade clamping mechanism. Among them, the saw blade welding machine welds the solder piece before the saw teeth of the saw blade, and must use the glue dispensing mechanism to carry out dispensing treatment on the solder piece, so that the solder piece after dispensing treatment can be reliably welded to the saw teeth of the saw blade Therefore, dispensing treatment is an essential process for welding the solder tab to the teeth of the saw blade.

Among them, in the existing dispensing mechanism, the plunger in the dispensing valve separates the dispensing valve body into a glue storage chamber and a plunger movable chamber by means of a sealing ring fixedly sleeved on the plunger; When the glue in the glue storage chamber is squeezed out and dotted on the soldering piece, the plunger needs to slide up and down in the plunger movable chamber, so as to drive the sealing ring on the plunger to change the size of the glue storage chamber To achieve the purpose of dispensing the solder sheet. However, the sliding seal of the plunger on the dispensing valve body is realized by the sealing ring fixedly sleeved on the plunger, and the sealing ring keeps sliding and pressing against the dispensing valve body while following the plunger sliding, thereby accelerating The wear speed of the sealing ring is reduced, which affects the dispensing reliability and durability of the dispensing valve.

Similarly, except for the dispensing valve used in the saw blade welding machine, other dispensing valves also have the above-mentioned defects.

Therefore, there is an urgent need for a reliable and durable dispensing valve to overcome the above-mentioned defects.

Contents of the invention

The object of the present invention is to provide a reliable and durable dispensing valve.

In order to achieve the above object, the present invention provides a dispensing valve, which includes a diaphragm, a glue nozzle, a plunger, a hollow cylinder and a glue storage body. The cylinder body and the gel storage body are fixed in a sealed butt joint, so that the hollow structure of the cylinder body and the gel storage body forms a sealed cavity; the outer side of the diaphragm is pressed and fixed between the cylinder body and the gel storage body, and the diaphragm separates the sealed cavity. The glue storage chamber in the glue storage body and a plunger movable chamber located in the cylinder body; the cylinder body is provided with the inlet and outlet connected with the plunger movable chamber, and the glue storage body is provided with a glue delivery port connected with the glue storage chamber; the rubber nozzle is sealed It is installed on the glue storage body and seals the opening of the glue storage chamber, and the glue nozzle has a dispensing channel connected with the glue storage chamber; the plunger is slidably accommodated in the plunger movable chamber, and one end of the plunger passes through the diaphragm and Extending into the dispensing channel, the plunger extending into the dispensing channel seals the dispensing channel, and the inner side of the diaphragm is fixed with the plunger.

Preferably, the dispensing valve of the present invention further includes a first sealing ring that is sleeved on the plunger and interferes between the inner wall of the plunger movable chamber and the plunger.

Preferably, the dispensing valve of the present invention further includes an elastic element that interferes between the inner wall of the plunger movable chamber and the plunger.

Preferably, the cylinder body includes a housing and a sealed adjustment cap that fits inside the housing. The adjustment cap is threadedly connected to the housing, the elastic element interferes between the plunger and the adjustment cap, and the outlet is opened on the adjustment cap.

Preferably, the adjustment cap is provided with a storage channel for the elastic element to be accommodated, and the storage channel communicates with the plunger movable chamber and the outlet.

Preferably, the cylinder body further includes a second sealing ring, and the second sealing ring is pressed between the adjustment cap and the housing.

Preferably, the dispensing valve of the present invention further includes a third sealing ring, and the third sealing ring presses against the connection between the glue storage body and the glue nozzle.

Preferably, the dispensing valve of the present invention also includes a blocking needle, which is accommodated in the glue storage chamber and connected to the plunger, and the blocking needle extends into the dispensing channel, and the plunger passes through the sealing point of the blocking needle. glue channel.

Preferably, the plunger is threadedly connected with the plugging needle, and the diaphragm is sleeved on the plunger and pressed between the plunger and the plugging needle.

Compared with the prior art, because the outer side of the diaphragm of the present invention is pressed and fixed between the cylinder body and the gel storage body, and the diaphragm separates the sealing chamber into a glue storage chamber and a plunger movable chamber, one end of the plunger passes through the diaphragm And extend into the dispensing channel, the plunger extending into the dispensing channel seals the dispensing channel, and the inner side of the diaphragm is fixed with the plunger, so the plunger slides up and down in the plunger movable cavity, and the outer side of the diaphragm always touches the The pressure is fixed between the cylinder and the gel storage body, and the inner side of the diaphragm is always fixed on the plunger, that is, the part between the inner side and the outer side of the diaphragm follows the adaptive deformation of the plunger, so that the diaphragm is The deformation of the part to change the size of the glue storage chamber, so as to achieve the purpose of extruding the glue in the glue storage chamber to achieve the purpose of dispensing, thus overcoming the problem that the plunger in the existing dispensing valve uses a sealing ring and a dispensing valve. The friction and sliding conflict between the bodies makes the sealing ring always have the defect of friction and wear with the dispensing valve body during the up and down sliding process of the plunger. Therefore, the dispensing of the dispensing valve of the present invention is more reliable and durable.

The present invention will become clearer through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of the dispensing valve of the present invention.

Fig. 2 is an exploded view of the dispensing valve shown in Fig. 1 .

Fig. 3 is a sectional view of the dispensing valve shown in Fig. 1 .

Detailed ways

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

Please refer to FIG. 1 to FIG. 3 , the dispensing valve 100 of the present invention includes a diaphragm 10 , a glue nozzle 20 , a plunger 30 , a hollow cylinder 40 and a glue storage body 50 . The cylinder body 40 and the gel storage body 50 are butted and fixed in a sealed manner so that the hollow structure of the cylinder body 40 and the gel storage body 50 jointly forms a sealed cavity 60; the outer side 10a of the diaphragm 10 is pressed and fixed between the cylinder body 40 and the gel storage body 50 so that the outer side 10a of the diaphragm 10 is always fixed between the cylinder body 40 and the gel storage body 50 when the plunger 30 slides up and down, and the diaphragm 10 separates the seal cavity 60 into a glue storage chamber 61 and a glue storage chamber 61 located in the gel storage body 50. The plunger movable chamber 62 located in the cylinder body 40 creates good conditions for the deformation of the diaphragm 10 to change the size of the glue storage chamber 61; at the same time, the cylinder body 40 is provided with an inlet 41 and an outlet 42 communicating with the plunger movable chamber 62, The inlet 41, the plunger movable chamber 62 and the outlet 42 together form a pressure circuit that drives the plunger 30 to slide up and down in the plunger movable chamber 62. The glue storage body 50 is provided with a glue delivery port 51 connected to the glue storage chamber 61, which is convenient for external glue The delivery of the liquid to the glue storage chamber 61; moreover, the glue nozzle 20 is installed on the glue storage body 50 in a sealed manner and seals the opening of the glue storage chamber 61. Specifically, in this embodiment, the glue nozzle 20 is sealed. The way to install the glue storage body 50 is that the dispensing valve 100 of the present invention is also provided with a third seal ring 90, and the third seal ring 90 is pressed against the joint of the glue storage body 50 and the glue nozzle 20, so that the glue storage body 50 and the glue nozzle 20 are connected together. The joint of the glue nozzle 20 is better sealed, and the glue nozzle 20 has a dispensing channel 21 communicated with the glue storage chamber 61; Pass the diaphragm 10 and extend into the dispensing channel 21, and the plunger 30 that extends into the dispensing channel 21 seals the dispensing channel 21, so as to prevent the dispensing valve 100 of the present invention from making the glue in the glue storage chamber 61 when it is in the initial position. The liquid flows to the outside, and the inner side 10b of the diaphragm 10 is fixed to the plunger 30 so that the position of the inner side 10b of the diaphragm 10 remains constant with the plunger 30 when the plunger 30 slides up and down.

Wherein, in order to make the seal between the plunger 30 and the inner wall 621 of the plunger movable chamber 62 better, thereby ensuring the reliability of the plunger 30 sliding in the plunger movable chamber 62, the dispensing valve 100 of the present invention also includes Covered on the plunger 30 and against the first sealing ring 70 between the inner wall 621 of the plunger movable chamber 62 and the plunger 30, specifically, in this embodiment, the plunger 30 is provided with The first annular groove 31 accommodated by the first sealing ring 70 on the plug 30, so that the first sealing ring 70 can be more reliably set on the plunger 30; Reliable, so the dispensing valve 100 of the present invention also includes an elastic element 80 that interferes between the inner wall 621 of the plunger movable chamber 62 and the plunger 30. The elastic element 80 is preferably a spring and slides up and down along the plunger 30. Direction setting; in order to facilitate the installation of components in the cylinder body 40, the cylinder body 40 includes a housing 40a and a sealed adjustment cap 40b that is sleeved in the housing 40a. The adjustment cap 40b is threadedly connected to the housing 40a, and the elastic element 70 Interfere between the plunger 30 and the adjustment cap 40b, and the outlet 42 is opened on the adjustment cap 40b; specifically, in this embodiment, the cylinder 40 further includes a second sealing ring 40c, and the second sealing ring 40c presses against the adjustment Between the cap 40b and the housing 40a, in order to achieve the purpose of the adjustment cap 40b being sealed in the housing 40a; preferably, the adjustment cap 40b is provided with a second annular groove 40d for the second sealing ring 40c to accommodate, In order to make the connection of the second sealing ring 40c on the adjusting cap 40b more reliable. More specifically, as follows:

Preferably, the adjustment cap 40b is provided with a storage channel 43 for the elastic element 80 to be accommodated, and the storage channel 43 communicates with the plunger movable chamber 62 and the outlet 42, so as to facilitate the pressure circuit of the plunger 30 to slide up and down in the plunger movable chamber 62 form.

At the same time, the dispensing valve 100 of the present invention also includes a plugging needle 52, which is accommodated in the glue storage chamber 61 and connected to the plunger 30, preferably the plugging needle 52 is screwed to the plunger ground 30 so as to facilitate The assembly and disassembly between them, and the blocking needle 52 extends into the dispensing channel 21, the plunger 30 seals the dispensing channel 21 through the blocking needle 52, and the diaphragm 10 is set on the plunger 30 and pressed against the plunger 30 and the plugging needle 52, specifically, after the plunger 30 is connected to the plugging needle 52, a third annular groove 32 is formed between the two for the inner side 10b of the diaphragm 10 to resist and fix, so that the inner side 10b of the diaphragm 10 The connection and fixation on the plunger 30 is more reliable.

In conjunction with the accompanying drawings, the working principle of the dispensing valve of the present invention is described in detail: in the initial state, due to the pushing action of the elastic element 80 on the plunger 30, the plunger 30 drives the blocking needle 52 into the dispensing channel 21, And seal the dispensing channel 21; when dispensing, make the plunger 30 slide in the direction of compressing the elastic element 80 at this time, and the sliding plunger 30 increases the distance between the inner side 10b and the outer side 10a of the diaphragm 10, which is convenient for the outside world When the glue is transported into the glue storage chamber 61, the plunger 30 drives the blocking needle 52 to open the dispensing channel 21; The elastic element 80 slides in the direction of compression, and under the elastic force provided by the elastic element 80, the plunger 30 slides rapidly toward the dispensing channel 21, and the rapidly sliding plunger 30 makes a gap between the inner side 10b and the outer side 10a of the diaphragm 10. The deformation of the part is faster, so as to achieve the purpose of quickly changing the size of the storage chamber 61, and provide greater extrusion force for the glue in the glue storage chamber 61, so that the glue in the glue storage chamber 61 can be placed on the workpiece more quickly Above; when the blocking needle 52 is inserted into the dispensing channel 21, the blocking needle 52 seals the dispensing channel 21 again at this time, thereby completing the one-time dispensing process of the dispensing valve 100 of the present invention.

Compared with the prior art, since the outer side 10a of the diaphragm 10 of the present invention is pressed and fixed between the cylinder body 40 and the glue storage body 50, and the diaphragm 10 separates the sealed cavity 60 into a glue storage chamber 61 and a plunger movable chamber 62 One end of the plunger 30 passes through the diaphragm 10 and extends into the dispensing channel 21, the plunger 30 extending into the dispensing channel 21 seals the dispensing channel 21, and the inner side 10a of the diaphragm 10 is fixed with the plunger 30, so the column The plug 30 slides up and down in the plunger movable chamber 62, the outer side 10a of the diaphragm 10 is pressed and fixed between the cylinder body 40 and the gel storage body 50, and the inner side 10b of the diaphragm 10 is always fixed on the plunger 30, that is The part between the inner side 10b and the outer side 10a of the diaphragm 10 follows the adaptive deformation of the plunger 30, so that the diaphragm 10 can use the deformation of the part between the inner side 10b and the outer side 10a to change the size of the glue storage chamber 61, so as to achieve extrusion The glue liquid in the glue storage chamber 61 is used to realize the purpose of dispensing, thus overcoming the friction and sliding resistance between the sealing ring and the dispensing valve body of the plunger in the existing dispensing valve, which makes the sealing ring in the gap of the plunger. In the process of sliding up and down, there is always friction and wear with the dispensing valve body. Therefore, the dispensing of the dispensing valve 100 of the present invention is more reliable and durable.

Of course, what has been described above is only a preferred embodiment of the present invention, and certainly cannot limit the scope of rights of the present invention with this. The specific implementation above is only illustrative, rather than restrictive. Under the enlightenment of the invention, without departing from the gist of the present invention and the scope of protection of the claims, many forms can also be made, and these still belong to the scope covered by the present invention.

Claims (9)

1. a glue dispensing valve, comprise barrier film, Jiao Zui, plunger and in hollow structure cylinder body and storage colloid, described cylinder body and described storage colloid are that docking of sealing is fixed and make described cylinder body and the hollow structure of storage colloid jointly form out an annular seal space, the outside of described barrier film compresses to be fixed between described cylinder body and described storage colloid, and described barrier film is separated described annular seal space and is gone out the movable chamber of a glue storage cavity and a plunger, described cylinder body offers the entrance and outlet that are communicated with the movable chamber of described plunger, described storage colloid offers the defeated Jiao Kou being communicated with described glue storage cavity, described Jiao Zui has a some glue passage be communicated with described glue storage cavity, what described plunger slided is contained in the movable chamber of described plunger, it is characterized in that, described glue storage cavity is positioned at described storage colloid, the movable chamber of described plunger is positioned at described cylinder body, described Jiao Zui to be arranged on described storage colloid and to seal the opening of described glue storage cavity in sealing, one end of described plunger is passed described barrier film and stretches in described some glue passage, stretch into the airtight described some glue passage of plunger in described some glue passage, inner side and the described plunger of described barrier film are fixed.

2. glue dispensing valve according to claim 1, is characterized in that, also comprises and being placed on described plunger and the first sealing ring contacted between the inwall in the movable chamber of described plunger and this plunger.

3. glue dispensing valve according to claim 1, is characterized in that, also comprises the flexible member between inwall and described plunger contacting at the movable chamber of described plunger.

4. glue dispensing valve according to claim 3, it is characterized in that, described cylinder body comprises housing and the adjustment cap be placed in described housing in sealing, described adjustment cap is threaded with described housing, described flexible member contacts between described plunger and described adjustment cap, and described outlet is opened on described adjustment cap.

5. glue dispensing valve according to claim 4, is characterized in that, described adjustment cap offers the cavities for described flexible member collecting, and described cavities is communicated with the movable chamber of described plunger and described outlet.

6. glue dispensing valve according to claim 4, is characterized in that, described cylinder body also comprises the second sealing ring, and described second sealing ring presses between described adjustment cap and described housing.

7. glue dispensing valve according to claim 1, is characterized in that, also comprises the 3rd sealing ring, and described 3rd sealing ring presses on the junction of described storage colloid and described Jiao Zui.

8. glue dispensing valve according to claim 1, it is characterized in that, also comprise putty pin, described putty pin to be contained in described glue storage cavity and to be connected with described plunger, and described putty pin stretches in described some glue passage, described plunger is by the airtight described some glue passage of described putty pin.

9. glue dispensing valve according to claim 8, is characterized in that, described plunger is threaded with described putty pin, and described barrier film to be placed on described plunger and to press between this plunger and described putty pin.