CN216465667U

CN216465667U - Department's section of thick bamboo needle subassembly with cooling function

Info

Publication number: CN216465667U
Application number: CN202122817579.9U
Authority: CN
Inventors: 张静
Original assignee: Dongguan Chengde Plastic Hardware Mould Co ltd
Current assignee: Dongguan Chengde Plastic Hardware Mould Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-05-10
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a cylinder ejector needle assembly with a cooling function, which comprises a cylinder sleeve and a cylinder ejector needle which are coaxially sleeved; the barrel sleeve is provided with a water inlet and a water outlet, the barrel sleeve is internally sleeved with a water passing sleeve, the water passing sleeve is provided with a water tank, and the water tank is communicated with the water inlet and the water outlet; the cylinder sleeve and the water passing sleeve are both provided with sealing rings. According to the utility model, the water jacket is arranged between the cylinder sleeve and the cylinder pin, so that circulating cooling liquid can be introduced into the cylinder pin assembly, the purpose of continuously and rapidly reducing the temperature of the cylinder pin is achieved, the problem of abnormal operation of the die caused by overhigh temperature rise is solved, and the production efficiency of the die is improved; the sealing rings are arranged on the barrel sleeve and at two ends of the water passing sleeve, so that sealing structures can be formed at the water inlet and the water outlet of the copper sleeve and at two ends of the water passing sleeve, cooling liquid is prevented from leaking into the die, and smooth operation of the die is ensured.

Description

Department's section of thick bamboo needle subassembly with cooling function

Technical Field

The utility model relates to the technical field of plastic molds, in particular to a cylinder pin assembly with a cooling function.

Background

The ejector pin assembly is one of plastic mold parts and is used for continuously ejecting plastic parts in a mold running at a high speed. The function of the ejector sleeve needle assembly is similar to that of the ejector pin, but if a slender column needs to be designed on a die, and the reserved space of the die is small, the ejection effect of the ejector sleeve needle assembly is generally superior to that of the ejector pin.

In practical application, as the ejector pin assembly is generally used in a deeper and longer hole groove, the ejector pin assembly generates heat quickly but dissipates heat slowly in continuous high-speed operation, so that the cooling problem becomes a main factor influencing the stable operation of the ejector pin assembly; in order to avoid the influence of high heat on the forming process and ensure the size precision of the plastic part, the mode of prolonging the forming period of the die and reducing the production efficiency of the die is mostly adopted for production.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides the ejector sleeve pin assembly with the cooling function, which can introduce circulating cooling liquid into the ejector sleeve pin assembly, achieve the aim of continuously and rapidly reducing the temperature of the ejector sleeve pin, solve the problem of abnormal operation of a mold caused by overhigh temperature rise, improve the production efficiency of the mold, avoid the leakage of the cooling liquid into the mold and ensure the smooth operation of the mold.

In order to solve the technical problems, the utility model adopts a technical scheme as follows:

a cylinder ejector needle assembly with a cooling function comprises a cylinder sleeve and a cylinder ejector needle which are coaxially sleeved, wherein a step-shaped through hole is formed in the cylinder sleeve, and a water inlet and a water outlet are formed in the side wall of the cylinder sleeve; an annular water passing sleeve is sleeved in the through hole in a matching manner, more than two water grooves which extend along the axial direction and are communicated with each other are arranged on the side wall of the water passing sleeve, the water grooves are communicated with the water inlet and the water outlet, and sealing rings are arranged on the water passing sleeve on two axial sides of the water grooves; the water passing sleeve is internally sleeved with the ejector sleeve needle, and two end parts of the ejector sleeve needle extend to the outer side of the sleeve.

As a further elaboration of the above technical solution:

in the technical scheme, the barrel sleeve is a T-shaped barrel sleeve, and the water inlet and the water outlet are symmetrically arranged at the lower part of the shoulder of the barrel sleeve; first grooves are formed in the upper portion and the lower portion of the water inlet and the water outlet on the wall of the barrel sleeve, and sealing rings are arranged in the two first grooves.

In the above technical scheme, the water passing sleeve is an annular water passing sleeve, and a second groove and a third groove are respectively arranged on the side wall of the water passing sleeve on the two axial sides of the water tank: a sealing ring is arranged in the second groove, and the third groove is communicated with the plurality of water tanks; a fourth groove is formed in the end portion, close to the third groove, of the water passing sleeve, and a sealing ring is arranged in the fourth groove.

In the technical scheme, two positioning hole grooves are symmetrically formed in the side walls of the barrel sleeve and the water passing sleeve, and two positioning columns can sequentially penetrate through the positioning hole grooves of the barrel sleeve and the water passing sleeve so as to fix the water passing sleeve in the barrel sleeve.

Compared with the prior art, the utility model has the beneficial effects that: the water jacket is arranged between the cylinder sleeve and the cylinder ejector pin, so that circulating cooling liquid can be introduced into the cylinder ejector pin assembly, the purpose of continuously and rapidly reducing the temperature of the cylinder ejector pin is achieved, the problem of abnormal operation of the die caused by overhigh temperature rise is solved, and the production efficiency of the die is improved; the sealing rings are arranged on the barrel sleeve and at two ends of the water passing sleeve, so that sealing structures can be formed at the water inlet and the water outlet of the copper sleeve and at two ends of the water passing sleeve, cooling liquid is prevented from leaking into the die, and smooth operation of the die is ensured.

Drawings

FIG. 1 is a schematic cross-sectional structural view of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic structural view of the cartridge in the present embodiment;

FIG. 4 is an enlarged schematic view of the portion B of FIG. 3;

fig. 5 is a schematic structural view of the excess water jacket in the present embodiment.

In the figure: 10. a barrel sleeve; 11. a through hole; 12. a water inlet; 13. a water outlet; 14. a first groove; 20. a sleeve ejecting needle; 30. Water passing through the jacket; 31. a water tank; 32. a second groove; 33. a third groove; 34. a fourth groove; 40. a seal ring; 50. a positioning hole groove; 60. a positioning column; 70. and (4) circulating a water-cooled tube.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. 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 comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1-5, a cylinder driving needle assembly with a cooling function comprises a cylinder sleeve 10 and a cylinder driving needle 20 which are coaxially sleeved, wherein a step-shaped through hole 11 is arranged in the cylinder sleeve 10, and a water inlet 12 and a water outlet 13 are arranged on the side wall of the cylinder sleeve; an annular water passing sleeve 30 is sleeved in the through hole 11 in a matching manner, more than two water channels 31 which extend along the axial direction and are mutually communicated are arranged on the side wall of the water passing sleeve 30, the water channels 31 are mutually communicated with the water inlet 12 and the water outlet 13, and sealing rings 40 are arranged on the water passing sleeve 30 on the two axial sides of the water channels 31; the sleeve driving needle 20 is sleeved in the water passing sleeve 30, and both ends of the sleeve driving needle 20 extend to the outer side of the sleeve 10.

Further, the barrel sleeve 10 is a T-shaped barrel sleeve, and the water inlet 12 and the water outlet 13 are symmetrically arranged at the lower part of the shoulder of the barrel sleeve 10; the wall of the barrel sleeve 10 is provided with first grooves 14 above and below the water inlet 12 and the water outlet 13, and sealing rings 40 are arranged in the two first grooves 14.

Further, the water passing sleeve 30 is an annular water passing sleeve, and a second groove 32 and a third groove 33 are respectively arranged on the side wall of the water passing sleeve on two axial sides of the water tank 31: a sealing ring 40 is arranged in the second groove 32, and the third groove 33 is communicated with a plurality of water tanks 31; the water passing sleeve 30 is provided with a fourth groove 34 at the end part close to the third groove 33, and a sealing ring 40 is arranged in the fourth groove 34.

Furthermore, two positioning hole grooves 50 are symmetrically formed in the side walls of the barrel casing 10 and the water passing casing 30, and two positioning columns 60 can sequentially penetrate through the positioning hole grooves 50 in the barrel casing 10 and the water passing casing 30, so that the water passing casing 30 is fixed in the barrel casing 10.

In the embodiment, the positioning hole grooves 50 are arranged on the side walls of the bottoms of the barrel sleeve 10 and the water passing sleeve 30; when the two positioning columns 60 respectively pass through the positioning hole grooves 50 to fix the water passing sleeve 30 in the barrel sleeve 10, the top end part of the water passing sleeve 30 just abuts against the step of the through hole 11, so that the sealing ring 40 in the fourth groove 34 can form a seal between the water passing sleeve 30 and the ejector pin 20, and the cooling liquid is prevented from leaking.

The working process of the utility model is as follows:

assembling: the cylinder sleeve 10 is fixed on the mould, and a water inlet 12 and a water outlet 13 on the cylinder sleeve are respectively connected with a circulating water cooling pipe 70; the water passing sleeve 30 is fixed in the barrel sleeve 10; the ejector pin 20 makes a reciprocating linear motion in the water passing sleeve 30.

And (3) cooling: the cooling liquid enters the water tank 31 through the water inlet 12, flows from the bottom to the top of the water passing sleeve 30 along the axial direction, and is converged into the third groove 33, then flows to the bottom of the water passing sleeve 30 along the axial direction through the other water tank 31, and takes away the heat on the water passing sleeve 30, so that the purpose of cooling the inner barrel ejector pin 20 is achieved.

Sealing: the sealing rings 40 in the two first grooves 14 on the cylinder sleeve 10 can seal the cylinder sleeve 10 and the mould, so that the cooling liquid is prevented from leaking into the mould from the water inlet 12 and the water outlet 13; the sealing ring 40 in the second groove 32 can seal the barrel sleeve 10 and the water passing sleeve 30, so that cooling liquid is prevented from leaking into the mold from one end part of the water passing sleeve 30; the seal ring in the fourth groove 34 seals the water jacket 30 and the syringe needle 20 to prevent the coolant from leaking into the through hole 11 from the other end of the water jacket 30.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. A barrel ejector pin assembly with a cooling function comprises a barrel sleeve and a barrel ejector pin which are coaxially sleeved, and is characterized in that a step-shaped through hole is formed in the barrel sleeve, and a water inlet and a water outlet are formed in the side wall of the barrel sleeve; an annular water passing sleeve is sleeved in the through hole in a matching manner, more than two water grooves which extend along the axial direction and are communicated with each other are arranged on the side wall of the water passing sleeve, the water grooves are communicated with the water inlet and the water outlet, and sealing rings are arranged on the water passing sleeve on two axial sides of the water grooves; the water passing sleeve is internally sleeved with the ejector sleeve needle, and two end parts of the ejector sleeve needle extend to the outer side of the sleeve.

2. The syringe needle assembly with the cooling function according to claim 1, wherein the sleeve is a T-shaped sleeve, and the water inlet and the water outlet are symmetrically arranged at the lower part of the shoulder of the sleeve; first grooves are formed in the upper portion and the lower portion of the water inlet and the water outlet on the wall of the barrel sleeve, and sealing rings are arranged in the two first grooves.

3. The syringe needle assembly with the cooling function according to claim 1, wherein the water passing sleeve is an annular water passing sleeve, and a second groove and a third groove are respectively formed on the side wall of the water passing sleeve on two axial sides of the water tank: a sealing ring is arranged in the second groove, and the third groove is communicated with the plurality of water tanks; a fourth groove is formed in the end portion, close to the third groove, of the water passing sleeve, and a sealing ring is arranged in the fourth groove.

4. The syringe needle assembly with the cooling function as claimed in claim 1, wherein the side walls of the barrel sleeve and the water passing sleeve are symmetrically provided with two positioning hole slots, and two positioning posts can sequentially penetrate through the positioning hole slots of the barrel sleeve and the water passing sleeve to fix the water passing sleeve in the barrel sleeve.