CN113798126B

CN113798126B - Fluid assembly and injection valve

Info

Publication number: CN113798126B
Application number: CN202111091519.1A
Authority: CN
Inventors: 张涛; 陈文雄; 江岱平; 卢国艺; 谢琴华; 张栋; 卢国娟; 张哲语; 林雄界
Original assignee: Shenzhen Tengsheng Precision Equipment Co ltd
Current assignee: Shenzhen Tengsheng Precision Equipment Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2023-04-14
Anticipated expiration: 2041-09-17
Also published as: CN113798126A

Abstract

The application provides a fluid assembly and an injection valve, wherein the injection valve comprises the fluid assembly, the fluid assembly comprises a flow channel main body, and the flow channel main body is provided with an installation cavity; the guide piece is fixedly arranged in the mounting cavity, and at least one cavity is formed inside the guide piece; the firing pin penetrates through the guide piece and the flow passage main body, and the guide piece is used for guiding the firing pin; the striker is at least partially located in at least one cavity with a gap between an inner wall of the cavity and an outer wall of the striker. According to the fluid assembly, the firing pin is at least partially positioned in the at least one cavity of the guide member, so that the contact length between the guide member and the firing pin is reduced, and the influence of friction heat generation of the high-speed motion of the firing pin is weakened; meanwhile, the guide piece and the runner main body are arranged in a split manner, so that the guide piece can be made of a high-wear-resistance tungsten steel material, the repeated movement precision of the firing pin is ensured, and the injection precision of the whole injection valve is improved; furthermore, the entire fluidic assembly is simple in construction.

Description

Fluid assembly and injection valve

Technical Field

The present disclosure relates to fluid control technologies, and particularly to a fluid assembly and an injection valve.

Background

Injection valves have become more and more widely used in industrial product packaging. The jetting valve is used to jet minute amounts of high viscosity fluids (solder, conductive paste, epoxy, adhesive, etc.) to appropriate locations on a workpiece (chip, electronic component, etc.) to effect mechanical or electrical connections between components.

In the existing injection valve on the market, the firing pins are generally guided by guide sleeves arranged at two ends of the flow passage main body, and the structure is complex and the occupied space is large. And because the firing pin needs to move at a high speed to impact the fluid to eject the fluid, and the firing pin can generate friction with the guide sleeve during high-speed movement, the guide sleeve is seriously abraded, so that the guide sleeve cannot meet the guide precision of the firing pin, and the repeated ejection precision of the fluid cannot be ensured.

Disclosure of Invention

The application provides a fluid assembly and an injection valve to solve the technical problems that the injection valve in the prior art is complex in structure and low in injection precision.

In order to solve the above problems, the embodiment of the present application provides a technical solution that: a fluidic assembly comprising:

a runner body having a mounting cavity;

the guide piece is fixedly arranged in the installation cavity, and at least one cavity is formed inside the guide piece;

a striker penetrating the guide member and the flow path main body, the guide member guiding the striker; the striker pin is at least partially located in at least one of the cavities with a gap between an inner wall of the cavity and an outer wall of the striker pin.

According to the fluid assembly provided by the embodiment of the application, firstly, at least part of the firing pin is arranged in at least one cavity in a penetrating manner, and a gap is formed between the inner wall of the cavity and the outer wall of the firing pin, so that the part of the firing pin, which is positioned in the at least one cavity, cannot be in direct contact friction with the guide, the contact length of the firing pin and the guide is reduced, and the influence of friction heat generated during high-speed movement of the firing pin is weakened; secondly, through with guide and runner main part components of a whole that can function independently design for the runner main part can adopt to have corrosion resistance and easy processing's stainless steel material and make, and the guide can adopt the tungsten steel material that the wearability is high to make, and then makes the wearability of guide higher, and the wearability of tungsten steel makes the wearing and tearing volume that the guide produced in the course of the work little, can guarantee that the repetition accuracy in the direction of motion can not take place great change after the firing pin works for a long time. In addition, through the design of embedding the guide piece in the flow channel main body, the structure of the whole fluid assembly is simplified, and the adjustable range of the fluid assembly is more free due to the fact that the fluid assembly can be adjusted in space according to the requirements of a use scene.

In one possible design, the guide member includes at least two guide portions distributed along a length extension direction of the striker, two adjacent guide portions are communicated through one cavity, and the striker is respectively in guide insertion fit with at least two guide portions.

In one possible embodiment, the overall length of at least one of the cavities in the direction of the longitudinal extent of the striker is greater than the overall length of at least two of the guides.

In one possible design, the inner wall of the guide part and the outer wall of the firing pin are in abutting fit with a surface at a plurality of points;

or a plurality of lines are in butt joint with the surface between the inner wall of the guide part and the outer wall of the firing pin;

or the inner wall of the guide part and the outer wall of the firing pin are in surface-to-surface abutting fit.

In one possible design, the guide portion has a guide hole, and an inner wall of the guide hole is provided with a plurality of discontinuous ribs protruding to abut against an outer wall of the striker.

In a possible design, the runner body further has a fluid passage communicating with the mounting cavity, the fluid passage is used for communicating with the rubber cylinder, and at least one of the cavities is communicated with the fluid passage.

In a possible design, the guide member is provided with a first glue inlet communicated with at least one cavity, the fluid channel is provided with a first glue outlet, and the first glue inlet is in butt joint with the first glue outlet;

the first glue inlet is arranged close to the top end of the guide piece.

In one possible design, the guide is made of tungsten steel.

In one possible embodiment, the outer wall of the guide piece is adhesively fixed to the inner wall of the installation space.

In a possible design, a nozzle is arranged on the flow passage main body, at least one cavity is communicated with the inner end of the nozzle, and one end of the firing pin extends out of the guide piece and is movably arranged inside the nozzle to impact fluid.

In one possible design, the end of the flow channel body for mounting the nozzle is a first end, and the nozzle has a reference surface that is flush with an outer end surface of the first end of the flow channel body.

In a possible design, the installation cavity penetrates through the first end of the flow passage main body, the nozzle is installed in the installation cavity, and the inner end of the nozzle is abutted with one end of the guide piece through a first sealing piece;

the first end of runner main part is locked there is first locking piece, first locking piece has the butt face, the butt face respectively with the outer terminal surface of the first end of runner main part reaches the reference surface butt.

In a possible design, a guide sleeve for guiding the firing pin is also hermetically mounted at one end of the flow passage main body close to the driving end of the firing pin.

In one possible design, the inner diameter of the guide sleeve is larger than the outer diameter of the firing pin.

In one possible design, the flow channel main body is provided with a second glue inlet communicated with the fluid channel, a first connecting piece is arranged at the second glue inlet, and one end of the first connecting piece is hermetically arranged at the second glue inlet;

the other end of the first connecting piece is provided with a second connecting piece, the second connecting piece is arranged on the first connecting piece in a mode of being adjustable in position along the circumferential direction, and the second connecting piece is provided with an external thread used for being connected with the rubber cylinder.

In a possible design, the second connecting piece rotates the cover and locates outside the first connecting piece, be equipped with on the second connecting piece and support the piece, support the piece can rotate and support tightly in the outer wall of first connecting piece.

In a second aspect, the present application further provides an injection valve comprising the above-described fluidic assembly. .

According to the injection valve provided by the embodiment of the application, through the arrangement of the fluid assembly, the friction heat generation of the injection valve is reduced, the service life is prolonged, the injection precision is improved, and the structure is simpler.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic perspective view of a fluidic assembly provided in an embodiment of the present application;

FIG. 2 is a cross-sectional schematic view of a fluid assembly provided by an embodiment of the present application;

FIG. 3 is a schematic view of an assembly of a striker and a guide of a fluid assembly provided by an embodiment of the present application;

FIG. 4 is a schematic top view of the assembly of the striker and guide of FIG. 3;

FIG. 5 is a schematic view of an assembly of a fluidic component and a cartridge according to an embodiment of the present disclosure;

FIG. 6 is a partially enlarged schematic view of portion A of FIG. 2;

fig. 7 is a schematic perspective view of an injection valve according to an embodiment of the present application.

Reference numerals: 10. a flow channel main body; 11. a mounting cavity; 111. positioning blocks; 12. a fluid channel; 121. a first glue outlet; 13. a second glue inlet; 14. mounting holes; 15. a mounting surface; 20. a guide member; 21. a cavity; 22. a guide portion; 221. a guide hole; 222. a convex strip; 23. a first glue inlet; 30. a striker; 31. a driving end; 32. an impact end; 40. a nozzle; 41. a reference plane; 50. a first seal member; 60. a first locking member; 61. a connecting portion; 62. an abutting portion; 621. an abutting surface; 70. a guide sleeve; 80. a second seal member; 90. a second locking member; 100. a first connecting member; 200. a second connecting member; 201. an external thread; 300. an abutting piece; 400. a seal screw; 500. a fluidic component; 600. a rubber cylinder; 700. a ball knob.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "inner," "outer," "upper," "bottom," "front," "back," and the like, when used in the orientation or positional relationship indicated in FIG. 1, are used solely for the purpose of facilitating a description of the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

In a first aspect, referring to fig. 1 and fig. 2, an embodiment of the present invention first provides a fluid assembly 500, which includes a flow channel main body 10, a guide 20 and a striker 30, wherein the guide 20 is installed in the flow channel main body 10, and the striker 30 penetrates through the guide 20 and the flow channel main body 10, respectively.

The runner body 10 has a mounting cavity 11, the mounting cavity 11 penetrates through the runner body 10 along two opposite sides of the striker 30 in the length extending direction, and the guide 20 is fixedly mounted in the mounting cavity 11. The guide member 20 is sleeved outside the striker 30 to guide the striker 30, and both ends of the striker 30 respectively penetrate through opposite sides of the runner body 10. Specifically, one end of the striker 30 extends out of one of the opposite sides of the flow path main body 10 to be connected to an external driving device, and the other end of the striker 30 is movably disposed on the other of the opposite sides of the flow path main body 10 to strike the fluid in a high-speed linear motion so as to be ejected from the nozzle 40.

The guide 20 has at least one cavity 21 in its interior, the cavity 21 extending in the direction of the longitudinal extension of the striker 30. At least a portion of the striker 30 is disposed through at least one cavity 21, the cavity 21 having an inner diameter greater than an outer diameter of the striker 30, i.e., there is a gap between an outer wall of the striker 30 and an inner wall of the cavity 21.

Specifically, the lengthwise extending direction of the guide 20 is parallel to the lengthwise extending direction of the striker 30; when the guide member 20 has a cavity 21 inside, the cavity 21 extends along the length extension direction of the guide member 20; when the guide member 20 has a plurality of cavities 21, the plurality of cavities 21 are distributed along the length extension of the guide member 20.

According to the fluid assembly 500, firstly, at least part of the striker 30 is arranged in the at least one cavity 21 in a penetrating manner, and a gap is formed between the inner wall of the cavity 21 and the outer wall of the striker 30, so that the part of the striker 30 located in the at least one cavity 21 is not in direct contact friction with the guide 20, the contact length between the striker 30 and the guide 20 is reduced, and the influence of friction heat generated by high-speed movement of the striker 30 is weakened; secondly, through the design of the guide part 20 and the runner main body 10 in a split manner, the runner main body 10 can be made of a stainless steel material which has corrosion resistance and is easy to process, the guide part 20 can be made of a tungsten steel material with high wear resistance, the wear resistance of the guide part 20 is higher, the wear resistance of the tungsten steel enables the wear amount of the guide part 20 generated in the working process to be small, and the repeated precision of the firing pin 30 in the movement direction can be guaranteed not to be changed greatly after the firing pin works for a long time. In addition, the design of embedding the guide member 20 in the flow channel main body 10 not only simplifies the structure of the whole fluid assembly 500, but also can be adjusted in space according to the requirements of the use scene, so that the adjustable range of the fluid assembly 500 is more free.

In one embodiment, referring to fig. 2, the guide member 20 includes at least two guide portions 22, at least two guide portions 22 are distributed along the length of the striker 30, and two adjacent guide portions 22 are communicated with each other through a cavity 21. The striker 30 is in guiding engagement with the at least two guides 22, respectively, so that at least two portions of the striker 30 in the longitudinal direction of the striker 30 are guided by the at least two guides 22. The guide member 20 can guide the striker 30 with a large length stably along the length direction of the striker 30 by the arrangement of at least two guide portions 22, so that the striker 30 can ensure the linear reciprocating motion in the motion direction.

In a more specific embodiment, the guide member 20 includes two guide portions 22, the guide member 20 has a cavity 21, the two guide portions 22 are respectively provided at opposite ends of the cavity 21, and the two guide portions 22 are respectively communicated with the opposite ends of the cavity 21. The striker 30 is fitted into the two guides 22, respectively, so that the striker 30 is guided by the two guides 22 at two locations along the length of the striker 30.

In one embodiment, the total length of the at least one cavity 21 is greater than the total length of the at least two guides 22 along the length extension of the striker 30, i.e. the cavity 21 occupies the entire guide 20 for a longer length, so as to further reduce the contact length between the striker 30 and the guide 20 and reduce the frictional heat generation between the striker 30 and the guide 20. It is understood that in other embodiments of the present application, the total length of the cavity 21 may be smaller than the total length of the guiding portion 22 according to actual design requirements.

In one embodiment, the inner wall of the guide 22 and the outer wall of the striker 30 are in a plurality of line-to-plane abutting engagement, and the line-to-plane abutting engagement reduces the contact area between the guide 22 and the striker 30, thereby further reducing friction between the striker 30 and the guide 22 moving at high speed. The number of the lines may be two, three, or three, the lines are distributed at equal intervals or unequal intervals along the circumferential direction of the striker 30, the lines may extend along the length direction of the striker 30, or the lines may extend obliquely with respect to the length extending direction of the striker 30. It is understood that in other embodiments of the present application, there may be multiple points of abutting engagement between the inner wall of the guide 22 and the outer wall of the striker 30, depending on the actual design requirements; alternatively, the inner wall of the guide 22 and the outer wall of the striker 30 may be in surface-to-surface abutting engagement, and the surface-to-surface abutting engagement may be in contact engagement of a plurality of discrete surfaces with a continuous surface, or may be in contact engagement of a continuous surface with a continuous surface.

In one embodiment, referring to fig. 3 and 4, the guiding portion 22 has a guiding hole 221, the inner wall of the guiding hole 221 is protruded with a plurality of discontinuous ribs 222, and the plurality of ribs 222 are respectively used for abutting against the outer wall of the striker 30. By designing the plurality of convex strips 222, the contact area between the guide portion 22 and the striker 30 can be reduced, thereby reducing friction.

Further, the first cross section of the protruding strip 222 is in an outward convex arc shape, wherein the first cross section is perpendicular to the length extending direction of the striker 30, that is, the protruding strip 222 is in line-to-plane contact with the outer wall of the striker 30. It is understood that in other embodiments, the first cross section of the protruding strip 222 may have a concave arc shape, and the radius of the arc shape of the protruding strip 222 is set to match the outer diameter of the striker 30, so that the protruding strip 222 and the striker 30 are in surface-to-surface abutment.

Referring to fig. 2 and 5, the fluid channel 10 further has a fluid channel 12, the fluid channel 12 is in communication with the mounting cavity 11, the fluid channel 12 is used for communicating with the rubber cartridge 600, the cavity 21 is in communication with the fluid channel 12, the fluid channel 12 is used for conveying the fluid in the rubber cartridge 600 to the cavity 21, that is, the fluid is filled between the inner wall of the cavity 21 and the striker 30, when the striker 30 moves at a high speed in the cavity 21, the striker 30 does not generate friction with the inner wall of the cavity 21, and the fluid between the striker 30 and the guide 20 can also flow to opposite ends of the cavity 21 to a portion where the striker 30 is in guiding contact with the guide 20 to act as a lubricant between the striker 30 and the guide 20, so as to achieve a lubricating effect and reduce friction. According to the fluid lubrication device, the fluid in the rubber cylinder 600 is conveyed to the cavity 21 of the guide member 20 through the fluid channel 12, the fluid in the cavity 21 can respectively flow to the two ends of the cavity 21 and flow to the part where the striker 30 is in guide contact with the guide member 20, so that the striker 30 and the guide member 20 can be lubricated, namely the striker 30 and the guide member 20 can be lubricated through the fluid in the rubber cylinder 600, additional lubricant does not need to be added, the maintenance is convenient, meanwhile, the friction is reduced, the abrasion of the guide member 20 is reduced, and the guide precision of the guide member 20 is improved.

In one embodiment, the guide member 20 is provided with a first glue inlet 23, the first glue inlet 23 is communicated with the cavity 21, the fluid channel 12 has a first glue outlet 121, the first glue inlet 23 is in butt joint with the first glue outlet 121, and the first glue inlet 23 is disposed near the top end of the guide member 20, that is, after the fluid enters the cavity 21 from the fluid channel 12, the fluid flows from the top end of the cavity 21 to the bottom end of the cavity 21, so that the fluid can penetrate through the whole cavity 21, and the fluid can flow to the two opposite ends of the cavity 21 to lubricate the space between the striker 30 and the guide portion 22 at the two ends respectively.

Preferably, the guide 20 is a cylindrical structure extending along the length extension direction of the striker 30, the cavity 21 extends along the length extension direction of the striker 30, the two guide portions 22 are end plates at two opposite sides of the cavity 21, and the first glue inlet 23 is opened on a side wall of the guide 20. The installation cavity 11 is vertically communicated with the fluid channel 12, the outer peripheral wall of the guide member 20 is matched with the inner peripheral wall of the installation cavity 11, after the guide member 20 is installed in the installation cavity 11, the connection port of the installation cavity 11 and the fluid channel 12 is blocked by the guide member 20, and after the first glue inlet 23 and the first glue outlet 121 are aligned, the fluid channel 12 can be communicated with the cavity 21, so that the fluid in the fluid channel 12 can be guided to the cavity 21. It is understood that in other embodiments of the present application, the guiding element 20 may also have a rectangular parallelepiped shape, a cubic shape, a triangular prism shape, etc., and the installation cavity 11 and the fluid channel 12 may also be in cross communication, but not in perpendicular communication, which is not limited herein.

In one embodiment, the guide member 20 is made of tungsten steel, and the wear-resistant property of tungsten steel makes the guide member 20 wear less during operation, so as to ensure that the repeatability of the striker 30 in the movement direction does not change greatly after a long time operation. In addition, because tungsten steel has high hardness and is difficult to process, and the thread required to be processed on the flow channel main body 10 cannot be processed, the flow channel main body 10 is made of stainless steel, so that the processing with multiple characteristics can be met, and meanwhile, the guide piece 20 is embedded in the circulation main body so as to meet the requirement of abrasion resistance. It will be appreciated that in other embodiments of the present application, the guide member 20 may be made of other materials with relatively high wear resistance, such as high speed steel, cemented carbide materials, etc.

In one embodiment, the outer wall of guide member 20 is attached to the inner wall of mounting chamber 11, and the outer wall of guide member 20 is attached to the inner wall of mounting chamber 11. The guide 20 may be glued into the mounting cavity 11. Specifically, during installation, the first glue inlet 23 of the guide member 20 needs to be aligned with the fluid channel 12 of the flow channel main body 10, and therefore, during installation, the guide member 20 needs to be adjusted at a certain angle in the radial direction, so that the first glue inlet 23 is aligned with the flow channel main body 10. For example, glue may be injected between the guide 20 and the flow channel body 10, and then the glue is cured by inserting an auxiliary tool (a long axis having the same size as the apertures of the fluid channel 12 and the first glue inlet 23) into the fluid channel 12 and the first glue inlet 23, respectively, to align the first glue inlet 23 with the fluid channel 12.

In one embodiment, referring to fig. 2 and 6, the fluid assembly 500 further includes a nozzle 40, the nozzle 40 is disposed on the flow path body 10, the cavity 21 is communicated with an inner end of the nozzle 40, and one end of the plunger 30 extends out of the guide 20 and is movably disposed inside the nozzle 40 to impact the fluid inside the nozzle 40, so that the fluid is ejected from the outside of the nozzle 40 at a high speed. The inner end of the nozzle 40 refers to an end of the nozzle 40 facing the flow channel main body 10, the outer end of the nozzle 40 refers to an end of the nozzle 40 facing away from the flow channel main body 10, the inner side of the nozzle 40 refers to a side of the nozzle 40 facing the flow channel main body 10, and the outer side of the nozzle 40 refers to a side of the nozzle 40 facing away from the flow channel main body 10. According to the fluid lubrication device, the cavity 21 is communicated with the inner end of the nozzle 40, namely, the fluid sprayed out of the nozzle 40 flows to the nozzle 40 from the rubber cylinder 600 after flowing through the fluid channel 12 and the cavity 21, so that the fluid in the rubber cylinder 600 can be sprayed out to form connection of components and parts, and can be used for lubrication between the guide piece 20 and the striker 30, the lubricant does not need to be additionally supplemented between the guide piece 20 and the striker 30, and later maintenance is facilitated. Meanwhile, the cavity 21 is a necessary path for the fluid to flow to the nozzle 40, so that a channel for connecting the rubber tube 600 is not required to be additionally arranged for the cavity 21, the structure of the flow channel main body 10 is simplified, the manufacturing process of the flow channel main body is simple, and the whole fluid assembly 500 is simple in manufacturing process and assembly.

In one embodiment, the end of the flow channel body 10 for mounting the nozzle 40 is a first end, and the outer end face of the first end is a mounting face 15. The nozzle 40 has the reference surface 41, and the reference surface 41 is flush with the mounting surface 15 of the flow channel main body 10, that is, a reference surface 41 is provided on the nozzle 40, so that the distance from the reference surface 41 of the nozzle 40 to the outer end surface of the nozzle 40 is equal to the distance from the mounting surface 15 of the flow channel main body 10 to the outer end surface of the nozzle 40, and thus the height of the nozzle 40 can be accurately controlled by controlling the distance from the mounting surface 15 of the flow channel main body 10 to the outer end surface of the nozzle 40, and the spraying accuracy of the whole fluid assembly 500 and the spraying valve can be improved.

Specifically, the mounting cavity 11 penetrates through a first end of the flow channel main body 10, the nozzle 40 is mounted in the mounting cavity 11, and the inner end of the nozzle 40 abuts against one end of the guide member 20 through the first sealing member 50; the first lock member 60 is locked to one end of the flow path main body 10, and the first lock member 60 has an abutment surface 621, and the abutment surface 621 abuts against the outer end surface of the first end of the flow path main body 10 and the reference surface 41, respectively. That is, the nozzle 40 is locked to the first end of the flow channel main body 10 by the first locking member 60 and the first sealing member 50, and the reference surface 41 of the nozzle 40 and the outer end surface of the first end of the flow channel main body 10 are always kept flush by the elasticity of the first sealing member 50 and the abutting surface 621, so that the injection accuracy of the injection valve can be ensured, and the nozzle 40 is also hermetically mounted on the first end of the flow channel main body 10.

The installation cavity 11 vertically runs through the first end of the flow channel main body 10, the guide piece 20 and the nozzle 40 are both installed in the installation cavity 11, and then the through hole can be opened at one end of the guide piece 20 facing the nozzle 40, so that the cavity 21 is communicated with the inner end of the nozzle 40. In the present application, since the guiding portion 22 is provided with the guiding hole 221, and the inner wall of the guiding hole 221 is provided with the plurality of discontinuous protruding strips 222, the fluid in the cavity 21 can flow out of the guiding element 20 and flow to the inner end of the nozzle 40 through the mounting cavity 11 through the through hole between two adjacent protruding strips 222. The striker 30 is extended from one end of the guide member 20 to the inside of the nozzle 40, and the striker 30 hits the fluid at high speed at the inside of the nozzle 40, thereby causing the fluid to be ejected from the outer end of the nozzle 40 at high speed.

In one embodiment, referring to fig. 6, the nozzle 40 is stepped, and the stepped surface of the nozzle 40 is the reference surface 41. It is understood that in other embodiments of the present application, when the shape of the nozzle 40 is changed, other faces may be provided as the reference surface 41, which is not particularly limited herein.

Preferably, the first seal 50 is an annular seal that is compressible to a greater extent when compressed, thereby facilitating the alignment of the datum surface 41 of the nozzle 40 with the mounting surface 15 of the flow passage body 10. It is understood that in other embodiments, the first seal 50 may be a sealing gasket.

Referring to fig. 6, the first locking member 60 includes a connecting portion 61 and an abutting portion 62 integrally connected, the abutting portion 62 is a circular thin plate, the connecting portion 61 is cylindrical, the connecting portion 61 extends from a peripheral edge of the abutting portion 62, the connecting portion 61 has an internal thread, and an outer peripheral wall of the flow channel main body 10 has an external thread. The connecting portion 61 is sleeved outside the first end of the flow channel main body 10 and connected to the external thread of the flow channel main body 10, the abutting surface 621 is an inner side surface of the abutting portion 62, and when the abutting portion 62 abuts against the first end of the flow channel main body 10, the abutting surface 621 just abuts against the mounting surface 15 of the flow channel main body 10. When mounting, the degree of compression of the first seal 50 can be adjusted by rotating the connecting portion 61 so that the mounting surface 15 of the flow path body 10 is flush with the reference surface 41 of the nozzle 40.

In one embodiment, the runner body 10 is further provided with a guide sleeve 70, the guide sleeve 70 is hermetically installed at one end of the runner body 10 close to the driving end 31 of the striker 30, and the guide sleeve 70 is used for guiding the striker 30. The firing pin 30 has a driving end 31 and an impact end 32, which are opposite to each other, wherein the driving end 31 is used for connecting with a driving device to drive the entire firing pin 30 to move at a high speed, and the impact end 32 is used for impacting fluid at the inner side of the nozzle 40 to enable the fluid to be sprayed. Because the striker 30 is of an elongated structure, the striker 30 is also provided with a certain length outside the guide 20, so that the upper half part of the striker 30 is suspended and easily generates deflection, and the striker 30 does not smoothly move vertically, and in the present application, the guide sleeve 70 is provided at one end of the flow passage main body 10 close to the driving end 31, so that the striker 30 is positioned before the striker 30 is inserted into the guide 20, and the installation of the striker 30 is smooth and simple.

In one embodiment, the inner diameter of the guide sleeve 70 is larger than the outer diameter of the striker 30, a certain gap is provided between the guide sleeve 70 and the striker 30, and the protruding strip 222 of the guide portion 22 is in contact fit with the striker 30, that is, the guide accuracy of the guide member 20 for the striker 30 is greater than that of the guide sleeve 70 for the striker 30, the striker 30 is mainly guided by the guide member 20, and the guide sleeve 70 mainly plays a role of guiding and positioning the striker 30, so that the striker 30 can be quickly installed.

Referring to fig. 2, the installation cavity 11 penetrates through two opposite ends of the flow channel main body 10, and a positioning block 111 is convexly disposed on an inner wall of the installation cavity 11. When the nozzle is mounted, one end of the guide 20 abuts against one side of the positioning block 111, the inner end of the nozzle 40 abuts against the other end of the guide 20 through the first sealing member 50, and the nozzle 40 is locked to one end of the flow path body 10 through the first locking member 60. One end of the guide sleeve 70 abuts against one end of the guide member 20 through the second packing member 80, and the guide sleeve 70 is locked to the other end of the flow path main body 10 by the second locking member 90. When the device is installed, the guide member 20 is firstly installed into the installation cavity 11 from one end of the runner body 10, then the first sealing member 50, the nozzle 40 and the first locking member 60 are sequentially installed, and the first locking member 60 is locked; then with second sealing member 80, uide bushing 70 and second retaining member 90 dress in proper order to locking second retaining member 90, thereby realizing the installation of guide 20, nozzle 40 and uide bushing 70, its simple to operate only needs first retaining member 60 of locking and second retaining member 90 can, it dismantles conveniently, only needs to loosen first retaining member 60 and second retaining member 90 can.

In one embodiment, referring to fig. 2, the flow channel main body 10 has a second glue inlet 13 communicated with one end of the fluid channel 12, a first connecting member 100 is disposed at the second glue inlet 13, one end of the first connecting member 100 is hermetically mounted at the second glue inlet 13, the other end of the first connecting member 100 is provided with a second connecting member 200, the second connecting member 200 is provided with an external thread 201 for connecting with the rubber cylinder 600, and the second connecting member 200 is mounted on the first connecting member 100 in a manner of being adjustable along a circumferential position. Through the setting of first connecting piece 100 and second connecting piece 200, when the packing element 600 is required, can install packing element 600 on second connecting piece 200, when the ascending angle in the needs adjustment packing element 600 edge circumference, only need to adjust second connecting piece 200 along the position of circumference on first connecting piece 100 can. That is, the first connecting piece 100 and the second connecting piece 200 are arranged, so that the rubber tube 600 can be hermetically installed at the second rubber inlet 13 of the runner main body 10, and the angle of the rubber tube 600 can be adjusted according to the use requirement.

Specifically, referring to fig. 2, the second connecting element 200 is rotatably sleeved outside the first connecting element 100, for example, the second connecting element 200 is sleeved outside the other end of the first connecting element 100, the abutting element 300 is disposed on the second connecting element 200, and the abutting element 300 can rotate and abut against the outer wall of the first connecting element 100. When the circumferential position of the second connecting member 200 needs to be adjusted, the abutting member 300 is rotated and loosened, then the second connecting member 200 is rotated on the first connecting member 100, and after the second connecting member is rotated to a proper angle, the abutting member 300 is rotated to abut against the first connecting member 100, so that the first connecting member 100 and the second connecting member 200 are locked.

Preferably, the tightening member 300 may be a bolt, or the like.

Referring to fig. 2, the fluid channel 12 is vertically communicated with the mounting cavity 11, the second glue inlet 13 is disposed on a sidewall of the fluid channel 12, and a sealing screw 400 is disposed on an end of the fluid channel 12 opposite to the first glue inlet 23 and hermetically mounted thereon.

Referring to fig. 1 and 7, a mounting hole 14 is formed in an outer wall of the flow channel main body 10, and the mounting hole 14 is used for mounting a ball knob 700, so that the flow channel main body 10 is quickly mounted in the injection valve, thereby realizing quick mounting of the fluid assembly 500.

The mounting holes 14 are tapered, and the flow channel main body 10 is provided with two mounting holes 14 along the front and rear sides in fig. 1, so that the front and rear sides of the flow channel main body 10 can be rapidly mounted.

As shown in fig. 7, the present application further provides an injection valve, which includes the fluid assembly 500 and the rubber cylinder 600, wherein the rubber cylinder 600 is installed above the fluid assembly 500. The injection valve of the application is provided with the fluid assembly 500, so that the injection valve is simple in structure, small in occupied space, less in heat generation due to abrasion, improved in injection precision and prolonged in service life.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A fluidic assembly, comprising:

a runner body having a mounting cavity;

the guide piece is fixedly arranged in the mounting cavity, and at least one cavity is formed inside the guide piece;

a striker penetrating the guide member and the flow path main body, the guide member guiding the striker; the striker is at least partially positioned in at least one cavity, a gap is arranged between the inner wall of the cavity and the outer wall of the striker, and the cavity extends along the length extension direction of the striker;

a nozzle is arranged on the flow passage main body, at least one cavity is communicated with the inner end of the nozzle, one end of the firing pin extends out of the guide piece and is movably arranged on the inner side of the nozzle to impact fluid;

the end, used for installing a nozzle, of the flow channel main body is a first end, the nozzle is provided with a reference surface, and the reference surface is flush with the outer end surface of the first end of the flow channel main body;

the guide piece comprises at least two guide parts distributed along the length extension direction of the firing pin, the adjacent two guide parts are communicated through one cavity, and the firing pin is respectively in guide insertion fit with the at least two guide parts;

the total length of at least one cavity is larger than the total length of at least two guide parts along the length extension direction of the striker;

a plurality of points are in abutting fit with the surface between the inner wall of the guide part and the outer wall of the firing pin;

or a plurality of lines are abutted and matched with the surface between the inner wall of the guide part and the outer wall of the firing pin;

the guide part is provided with a guide hole, the inner wall of the guide hole is convexly provided with a plurality of discontinuous convex strips, and the convex strips are used for being abutted against the outer wall of the firing pin.

2. A fluid assembly as claimed in claim 1, wherein the flow channel body further has a fluid passage in communication with the mounting cavity, the fluid passage being adapted to communicate with a cartridge, at least one of the cavities being in communication with the fluid passage.

3. The fluid assembly according to claim 2, wherein the guide member defines a first glue inlet communicating with at least one of the cavities, the fluid channel defines a first glue outlet, and the first glue inlet is in abutting engagement with the first glue outlet;

the first glue inlet is arranged close to the top end of the guide piece.

4. A fluid assembly as claimed in claim 1, wherein the guide is made of tungsten steel.

5. A fluid assembly according to claim 1, wherein the outer wall of the guide member is adhesively secured to the inner wall of the mounting chamber.

6. A fluid assembly as claimed in claim 1, wherein the mounting chamber extends through the first end of the flow channel body, the nozzle being mounted in the mounting chamber with an inner end of the nozzle abutting one end of the guide member via a first seal;

7. A fluid assembly as claimed in any one of claims 1 to 5 wherein a guide sleeve for guiding the firing pin is also sealingly mounted to the flow channel body at an end thereof adjacent the drive end of the firing pin.

8. The fluid assembly of claim 7, wherein an inner diameter of the guide sleeve is larger than an outer diameter of the striker.

9. The fluid assembly according to claim 2, wherein the flow channel body is provided with a second glue inlet communicated with the fluid channel, a first connecting piece is arranged at the second glue inlet, and one end of the first connecting piece is hermetically arranged at the second glue inlet;

the other end of the first connecting piece is provided with a second connecting piece, the second connecting piece is arranged on the first connecting piece in a mode of adjustable position along the circumferential direction, and the second connecting piece is provided with an external thread used for being connected with the rubber cylinder.

10. The fluid assembly according to claim 9, wherein the second connecting member is rotatably sleeved outside the first connecting member, and the second connecting member is provided with an abutting member, and the abutting member is capable of rotating and abutting against an outer wall of the first connecting member.

11. Injection valve, characterized in that it comprises a fluidic assembly according to any one of claims 1 to 10.