CN217752555U - Pilot-operated type valve needle glue sealing system - Google Patents

Abstract

The utility model relates to the technical field of injection molding, and discloses a guide type valve needle sealing system, which comprises a core shell, a core body, a core cover body and a valve needle body, wherein ring bodies are fixedly arranged on two sides inside the core body, supporting balls are fixedly arranged on the surfaces of the inner sides of the ring bodies, the valve needle body is in rolling connection with the surfaces of the supporting balls, and through grooves are formed in the surfaces of the ring bodies in a penetrating manner; the utility model discloses can carry out spacing support to the needle, effectively prevent the needle skew, and can cool off the needle, take away the heat of needle, make the temperature of needle descend by a wide margin, thereby make the difficult deformation that produces of needle, and make needle head and circular mouthful stress point of gluing even, prevent to glue mouthful and become ellipse circular, some current guide's formula needle system of gluing have been solved and in the use, the needle receives the heat transfer of mobile material and sends the temperature rise, produce deformation easily and take place the skew, cause the circular problem of gluing mouthful deformation.

Description

Pilot-operated type valve needle glue sealing system

Technical Field

The utility model relates to a technical field of moulding plastics specifically is a pilot-operated formula needle seals glue system.

Background

In the process of processing products, in order to ensure the self-sealing performance of the products, the sealing performance of the products is generally increased by adopting the processing of sealing compound. When the existing valve needle and a heating core are directly matched, high heat of the core is transmitted to the valve needle, so that the temperature of the head of the valve needle is higher, the position of a glue opening of a product is chromatic aberration or solar printing, the valve needle is not tightly matched with the core, and a gap of 0.1 to 0.5 mm is reserved on a single side. The product is unqualified, and the rubber opening can be normally produced after being repaired into a round shape.

Through retrieval, as disclosed in chinese patent literature, a pilot-operated valve needle sealing system [ application No.: CN201510193874.8; publication No.: CN 104842519B. This kind of pilot-operated formula needle system of gluing includes: a valve needle, a cartridge and a cartridge cover; the core is arranged in the core cover, and the valve needle is arranged in the core; the first step of the valve needle head is in clearance fit with the circular rubber opening of the core cover, namely the first step of the core cover, and the single side of the fit clearance is 0.002-0.005 mm; the second step of the valve needle is in clearance fit with the second step of the core cover, and the single side of the fit clearance is 0.01-0.02 mm; the third step of the valve needle is in clearance fit with the core, and the single side of the fit clearance is 0.1-0.2 mm.

The pilot-operated formula needle system of gluing disclosed in this patent enables that needle head and circular mouthful stress point of gluing are even, it can not become oval to glue the mouth, needle and circular mouthful wear-resisting to glue, it is longe-lived, and the product is glued mouthful completely, there is not burr or colour difference around gluing the mouth, but the material that flows in the core in this system can contact with the needle, thereby give the needle heat transfer, the needle still has the possibility of deformation, cause the needle to be partial to one side easily, cause circular mouthful deformation of gluing and lead to the product glue mouthful to have the burr.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pilot-operated valve needle seals system of glue to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a guide type valve needle glue sealing system comprises a core shell, a core body, a core cover body and a valve needle body, wherein ring bodies are fixedly arranged on two sides of the inside of the core body, supporting balls are fixedly arranged on the surface of the inner side of each ring body, the valve needle body is in rolling connection with the surfaces of the supporting balls, through grooves are formed in the surfaces of the ring bodies in a penetrating mode, a cooling cavity is arranged inside the valve needle body, two ends of the cooling cavity are respectively provided with a conveying pipe and a return pipe in a communicating mode, and the other ends of the conveying pipe and the return pipe are provided with a liquid conveying mechanism.

Preferably, the infusion mechanism comprises a cooling liquid tank, a communicating pipe, an electromagnetic valve and a delivery pump, the communicating pipe is communicated with the bottom of the cooling liquid tank, the electromagnetic valve is communicated with the other end of the communicating pipe, the delivery pump is communicated with the electromagnetic valve, the other end of the delivery pipe is communicated with the delivery pump, and the other end of the return pipe is communicated with the cooling liquid tank.

Preferably, a heat conduction column penetrates through the top of the cooling liquid tank, and a fan is bolted to one side of the top of the cooling liquid tank.

Preferably, the cooling chamber is internally provided with a first sealing element and a second sealing element respectively, the first sealing element is fixedly arranged on the surface of the delivery pipe, and the second sealing element is fixedly arranged on the surface of the return pipe.

Preferably, the specification and size of the first sealing element are the same as those of the second sealing element, and the first sealing element and the second sealing element are both made of high-temperature-resistant rubber.

Preferably, the number of the through grooves is four, and the inner walls of the through grooves are designed in an arc shape.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses can carry out spacing support to the needle, effectively prevent the needle skew, and can cool off the needle, take away the heat of needle, make the temperature of needle descend by a wide margin, thereby make the difficult deformation that produces of needle, and make needle head and circular mouthful stress point of gluing even, prevent to glue mouthful and become ellipse circular, some current guide's formula needle system of gluing have been solved and in the use, the needle receives the heat transfer of mobile material and sends the temperature rise, produce deformation easily and take place the skew, cause the circular problem of gluing mouthful deformation.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

FIG. 2 is a schematic perspective view of the middle ring body of the present invention;

fig. 3 is a schematic sectional structure view of the valve needle body of the present invention;

fig. 4 is a schematic structural view of the infusion mechanism of the present invention.

In the figure: 1. a cartridge housing; 2. a core body; 3. a core cover body; 4. a ring body; 5. supporting the balls; 6. a through groove; 7. a valve needle body; 8. a cooling chamber; 9. a delivery pipe; 10. a return pipe; 11. a transfusion mechanism; 111. a coolant tank; 112. a communicating pipe; 113. an electromagnetic valve; 114. a delivery pump; 12. a fan; 13. a heat-conducting column; 14. a first seal member; 15. a second seal.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a pilot-operated valve needle sealing system includes a core housing 1, a core body 2, a core cover body 3 and a valve needle body 7, wherein two sides of the interior of the core body 2 are both fixedly provided with a ring body 4, a support ball 5 is fixedly provided on the surface of the inner side of the ring body 4, the valve needle body 7 is in rolling connection with the surface of the support ball 5, a through groove 6 is formed in the surface of the ring body 4, a cooling cavity 8 is provided in the interior of the valve needle body 7, two ends of the cooling cavity 8 are respectively communicated with a delivery pipe 9 and a return pipe 10, and the other ends of the delivery pipe 9 and the return pipe 10 are provided with a fluid delivery mechanism 11.

The liquid conveying mechanism 11 includes a cooling liquid tank 111, a communication pipe 112, a solenoid valve 113 and a delivery pump 114, the communication pipe 112 is communicated with and disposed at the bottom of the cooling liquid tank 111, the solenoid valve 113 is communicated with and disposed at the other end of the communication pipe 112, the delivery pump 114 is communicated with the solenoid valve 113, the other end of the delivery pipe 9 is communicated with the delivery pump 114, and the other end of the return pipe 10 is communicated with the cooling liquid tank 111.

The top of coolant liquid case 111 runs through and is provided with heat conduction post 13, and one side bolt on coolant liquid case 111 top has connect fan 12, and in this embodiment, because coolant is in long-term use, its heat absorption and temperature rise to influence the cooling effect, consequently set up heat conduction post 13 and fan 12, heat conduction post 13 can be with the inside heat transfer of coolant liquid case 111 to the top, then opens fan 12 and blows away the heat of heat conduction post 13, thereby reduces coolant's temperature.

The cooling chamber 8 is internally provided with a first sealing element 14 and a second sealing element 15 respectively, the first sealing element 14 is fixedly arranged on the surface of the delivery pipe 9, and the second sealing element 15 is fixedly arranged on the surface of the return pipe 10, in the embodiment, the first sealing element 14 can increase the sealing performance between the delivery pipe 9 and the cooling chamber 8, and the second sealing element 15 can increase the sealing performance between the return pipe 10 and the cooling chamber 8 through the arrangement of the first sealing element 14 and the second sealing element 15.

The specification size of first sealing member 14 is the same with the specification size of second sealing member 15, and the material of first sealing member 14 and second sealing member 15 is high temperature resistant rubber, and in this embodiment, the material through designing first sealing member 14 and second sealing member 15 is high temperature resistant rubber to make first sealing member 14 and second sealing member 15 all have high temperature resistant characteristic, thereby be difficult for producing deformation under the effect of high temperature.

The number of the through grooves 6 is four, and the inner walls of the through grooves 6 are in arc-shaped design, in the embodiment, the through grooves 6 can ensure the flowability inside the core body 2, and the ring body 4 is prevented from blocking the sealing glue.

The working principle is as follows: during operation, the valve needle body 7 moves in the core body 2, and meanwhile, the valve needle body 7 can be limited and supported by the plurality of support balls 5, so that the valve needle body 7 can prevent the valve needle body 7 from deviating while keeping the movement range, and meanwhile, the delivery pump 114 and the electromagnetic valve 113 are opened, so that the cooling medium in the cooling liquid tank 111 can enter the delivery pipe 9 through the communication pipe 112, the delivery pump 114 and the electromagnetic valve 113, and then the cooling medium enters the cooling cavity 8, so that the heat of the valve needle body 7 is absorbed, the temperature of the valve needle body 7 is reduced, and the cooling medium after absorbing the heat returns to the inside of the cooling liquid tank 111 from the return pipe 10, so that the temperature reduction of the valve needle body 7 is completed, and the deformation of the valve needle body is effectively prevented.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a pilot-operated formula needle system of gluing, includes core shell (1), core body (2), core lid body (3) and needle body (7), its characterized in that: the utility model discloses a valve core, including core body (2), ring body (4) inboard fixed surface is provided with support ball (5), and the surface roll connection of valve needle body (7) and support ball (5), the surface of ring body (4) is run through and has been seted up logical groove (6), the inside of valve needle body (7) is provided with cooling chamber (8), the both ends of cooling chamber (8) communicate respectively and are provided with conveyer pipe (9) and back flow (10), the other end of conveyer pipe (9) and back flow (10) is provided with infusion mechanism (11).

2. The pilot-operated valve pin sealant system of claim 1, wherein: infusion mechanism (11) include coolant liquid case (111), communicating pipe (112), solenoid valve (113) and delivery pump (114), communicating pipe (112) intercommunication sets up in the bottom of coolant liquid case (111), solenoid valve (113) intercommunication sets up the other end at communicating pipe (112), delivery pump (114) and solenoid valve (113) communicate each other, the other end and delivery pump (114) of conveyer pipe (9) communicate each other, the other end and coolant liquid case (111) of back flow (10) communicate each other.

3. The pilot-operated valve pin sealant system of claim 2, wherein: the top of the cooling liquid box (111) is provided with a heat conduction column (13) in a penetrating mode, and one side of the top of the cooling liquid box (111) is connected with a fan (12) in a bolted mode.

4. The pilot-operated valve pin sealant system of claim 1, wherein: a first sealing element (14) and a second sealing element (15) are respectively arranged inside the cooling cavity (8), the first sealing element (14) is fixedly arranged on the surface of the conveying pipe (9), and the second sealing element (15) is fixedly arranged on the surface of the return pipe (10).

5. The pilot-operated valve pin sealant sealing system of claim 4, wherein: the specification and size of the first sealing element (14) are the same as those of the second sealing element (15), and the first sealing element (14) and the second sealing element (15) are both made of high-temperature-resistant rubber.

6. The pilot-operated valve pin sealant system of claim 1, wherein: the number of the through grooves (6) is four, and the inner walls of the through grooves (6) are designed in an arc shape.

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