KR102150084B1 - Valve pin adjuster cylinder - Google Patents

Abstract

The present invention relates to a cylinder capable of adjusting the position of a valve pin. In the cylinder in which the position of the valve pin can be adjusted according to an embodiment of the present invention, a gate into which molten resin is injected is formed, a flow path through which the molten resin injected through the gate flows is formed inside, and the molten resin is discharged. A housing in which a nozzle is configured on an upper portion of a manifold configured in a lower portion, and a hollow portion is provided; A piston configured in the hollow portion, provided with a valve pin at a lower portion thereof, and reciprocating by the working fluid introduced into the hollow portion; An upper plate having a position adjustment gap on the upper portion of the housing and having an opening communicating with the hollow portion; A guide member configured across the upper plate and the housing to guide the housing when the housing is elevated; And a position adjusting rotor that penetrates the opening so as to elevate the housing and is fastened to the hollow portion in a screw manner to elevate the housing through rotational drive.

Description

Cylinder with adjustable valve pin position {VALVE PIN ADJUSTER CYLINDER}

The present invention relates to a cylinder capable of adjusting the position of a valve pin. In more detail, it relates to a cylinder capable of adjusting the position of the valve pin for adjusting the position of the valve pin filling the cavity by injecting molten resin into the injection mold.

The Hot Runner System, one of the injections that supplies molten resin (hereinafter referred to as'melted resin') to the injection mold during injection molding, is a molten resin when injecting molten resin into the cavity of the injection mold. It is common to refer to a system for spraying the mold at high pressure while maintaining the temperature of the mold at high temperature.

Such a hot runner system, for example, can be stably supplied to the injection mold side through several points while the resin for injection is melted during injection molding, so that it is possible to perform precise molding even when the temperature of the molten resin is low or the injection pressure is low.

Here, in the hot runner system, a flow channel through which molten resin flows is formed inside, and a manifold that uniformly supplies molten resin to the cavity side of the mold through the flow channel, and a nozzle that discharges molten resin And a valve pin and a cylinder that drives the valve pin.

In addition to this, it may further include a duct that is assembled together with the hot runner system to configure the overall layout, and a solenoid valve and a connector that are assembled to the duct.

On the other hand, the valve pin of the hot runner system is generally moved up and down in the nozzle by interlocking with the piston configured inside the cylinder to inject molten resin into the inside of the injection mold to fill the cavity.

Here, the valve pins of the hot runner system may have different heights depending on assembly tolerances.For example, if the heights of the valve pins are different under the configuration of a multi-gate, deviation may occur in the amount of molten resin injected into the injection mold. .

As an example, if the heights of the valve pins composed of at least two or more in the hot runner system are different in order to cope with the multi-gate of injection molds, variations may occur in the injection amount of molten resin, which results in poor molding quality. As it acts as a factor that induces, the position is adjusted and operated.

In other words, in order to uniformly inject molten resin into the multi-gate of the injection mold to form a high-quality molded product, it is a task that should be prioritized to adjust the position of the valve pin so that different heights do not occur. .

However, the cylinder of the hot runner system according to the prior art is a configuration capable of adjusting the position of the valve pin through disassembly and assembly, and considering that the height of the valve pin is different depending on the tolerance generated during assembly, the effective position adjustment has not been reached. .

For example, even if the position of the valve pin is uniformly adjusted by disassembling the cylinder, there may be a difference in the height of the valve pin depending on the tolerance generated during the assembly process of the cylinder. As a result, there is only a difference in degree, but still The height is different.

In addition, disassembling and assembling the cylinder for position adjustment of the valve pin may cause leakage due to the characteristics of the cylinder driven by hydraulic pressure or pneumatic pressure, and may be a factor that shortens the life of the component from a long-term perspective.

Korean Patent Publication No. 10-1336279

An aspect of the present invention is to provide a cylinder capable of adjusting the position of the valve pin so that the position of the valve pin can be easily adjusted without disassembling and assembling through structural improvement.

An aspect of the present invention is to provide a cylinder capable of adjusting the position of a valve pin so that heat transfer can be easily prevented through structural improvement in consideration of the characteristics of a manifold.

In order to achieve the above task,

In the cylinder in which the position of the valve pin according to an embodiment of the present invention is adjustable, a gate into which molten resin is injected is formed, and a flow channel through which the molten resin injected through the gate flows is formed therein. And, the nozzle (Nozzle) for discharging the molten resin is configured on the upper portion of the manifold (Manifold) configured at the bottom, the housing (Housing) provided in the hollow portion formed through the inside;

A piston configured in the hollow portion, provided with a valve pin at a lower portion thereof, and reciprocating by the working fluid introduced into the hollow portion;

A top plate having a position adjustment gap on the upper portion of the housing and having an opening communicating with the hollow portion;

A guide member configured across the upper plate and the housing to guide the housing when the housing is elevated;

The lower part penetrates the opening so that the housing can be raised and lowered and fastened to the hollow part in a screw type, and a disc-shaped stopper part intercepted to the upper plate is configured on the upper part to enable rotational drive in place through the stopper part. A position adjustment rotor (Adjuster) for elevating the housing through; And
A prevent rotation ring configured on the upper part of the upper plate to prevent loosening of the position adjusting rotor through coupling with the position adjusting rotor;
Including,

The anti-loosening ring may have a polygon-shaped first uneven portion formed on an inner circumference thereof, and a second uneven portion corresponding to the first uneven portion may be formed on an outer circumference of the positioning rotor so as to constitute a meshing structure.

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In addition, in the cylinder in which the position of the valve pin can be adjusted according to an embodiment of the present invention, the nozzle may have a heating line on its outer periphery, and the heating line may be formed in a spiral shape.

In addition, in the cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention, the nozzle is configured inside a lower portion of the nozzle tip (Nozzle Tip) to discharge the molten resin; And

A union fastened to the lower end of the nozzle in a screw manner to prevent separation of the nozzle tip;

It may include.

In addition, in the cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention, the housing is provided with a hollow portion, the outer housing configured with a guide member arranged around the hollow portion (Outer Housing); And

A bottom housing configured under the outer housing and provided with a through portion communicating with a hollow portion to accommodate a lower portion of the piston;

It may include.

In addition, in the cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention, the housing is a first O-ring (O-Ring) configured between the positioning rotor and the outer housing to prevent leakage of the working fluid. ), a second O-ring configured between the outer housing and the piston, a third O-ring configured between the outer housing and the lower housing, and a fourth O-ring dually configured between the lower housing and the piston;

It may further include.

In addition, in the cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention, a free cooling system for circulating the working fluid inside the cylinder (Free Cooling System);

It further includes,

The free cooling system includes a flow space configured through a piston;

A valve member coupled to the upper portion of the flow space and having a circulation flow passage therethrough;

A check valve configured to be accommodated in the lower portion of the flow space and elevating through the working fluid flowing into the flow space;

It may include.

In addition, in the cylinder in which the position of the valve pin can be adjusted according to an embodiment of the present invention, the flow space may have a second O-ring configured on an outer circumference and a protrusion configured to protrude from an upper portion of the piston.

In addition, in the cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention, the position adjusting rotor may have a polygonal fastening space at an upper center.

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In addition, in the cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention, the cooling means is configured between the manifold and the housing to prevent heat from the manifold is transferred to the housing;

It may further include.

In addition, in the cylinder in which the position of the valve pin can be adjusted according to an embodiment of the present invention, the cooling means is configured with a position adjustment gap in the lower portion of the housing, and is formed in communication with the hollow part to pass through the valve pin. A cooling plate formed in the additional center and having a cooling passage therein; And

A cooling line configured outside the cooling plate to supply a cooling medium to a cooling passage;

It may further include.

In addition, in the cylinder in which the position of the valve pin can be adjusted according to an embodiment of the present invention, the manifold heats the molten resin, and heaters having an integral power supply unit may be buried on both sides.

In addition, in the cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention, the manifold is configured on the upper portion of the pin guide for guiding the elevation of the valve pin (Pin Guide); And

A pin guide bush configured on the outside of the pin guide;

It may further include.

In addition, in the cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention, the lower end of the guide member is inserted into the upper portion of the cooling plate, and the guide member is composed of a guide pipe, and It can be fixedly coupled to the cooling plate through a long bolt inserted from the plate and fastened to the cooling plate.

In addition, in the cylinder in which the position of the valve pin can be adjusted according to an embodiment of the present invention, the position adjusting rotor may have a ruler for displaying the rotational position on a surface thereof in a radial arrangement.

In addition, in the cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention, the position adjusting rotor may move the valve pin by 0.05 mm per unit of the ruler.

This solution will become more apparent from the detailed contents for carrying out the following invention based on the accompanying drawings.

Prior to this, terms or words used in the present specification and claims should not be interpreted in a conventional and dictionary meaning, and the inventor should appropriately define the concept of terms in order to explain his own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that it can be.

According to an embodiment of the present invention, it is possible to easily adjust the position of the valve pin from the outside of the housing without disassembling the cylinder, so that, for example, in a hot runner system, the problem that the height between the valve pins is different can be easily solved. .

Therefore, not only can the reliability of the hot runner system be effectively improved, but also the maintenance of the cylinder can be facilitated, and the replacement cycle of, for example, internal parts can be extended.

On the other hand, according to an embodiment of the present invention, a cooling means is formed between the manifold and the housing to cool the housing, thereby suppressing the temperature rise of the cylinder and the working fluid through the cooling effect, as well as cooling the pin guide at the same time. It is effective in preventing leakage of molten resin that may occur between the valve pin and the pin guide.

1 is a perspective view showing a combination of a cylinder capable of adjusting the position of a valve pin according to an embodiment of the present invention.
Figure 2 is a cross-sectional view showing a combination of a cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention.
3 is an exploded perspective view showing a cylinder capable of adjusting the position of a valve pin according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing a piston according to an embodiment of the present invention.
5A and 5B are cross-sectional views showing an enlarged main part of FIG. 4.
6 is a plan view showing a cylinder in which the position of a valve pin can be adjusted according to an embodiment of the present invention as viewed from above.
7 is a cross-sectional view showing the position adjustment of the valve pin through a cylinder capable of adjusting the position of the valve pin according to an embodiment of the present invention.
8 is a cross-sectional view showing an enlarged main part of FIG. 7.

Specific aspects and specific technical features of the present invention will become more apparent from the following specific content and one embodiment associated with the accompanying drawings. In the present specification, in adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, in describing the constituent elements of the present invention, terms such as first, second, A, B, (a), (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to that other component, but another component between each component It should be understood that elements may be “connected”, “coupled” or “connected”.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 6, the cylinder 3 capable of adjusting the position of the valve pin according to an embodiment of the present invention is a flow path that is a kind of passage through which molten resin is injected through the gate 1a, and the molten resin flows. It is configured on the upper part of the manifold 1 that is uniformly distributed through 1b) and supplied to the lower nozzle 2 so that the valve pin 4 is lifted and lowered in the nozzle 2 by hydraulic or pneumatic pressure.

To this end, the cylinder 1 is configured on the upper part of the manifold 1, and the housing 10 is provided with a hollow part 11 through which the working fluid is introduced, and is configured in the hollow part 11, A valve pin (4) is provided in the hollow part (11), a piston (20) reciprocating up and down by hydraulic pressure or pneumatic pressure by a working fluid introduced into the hollow part (11), and a position adjustment gap (G) on the upper part of the housing (10). ), and includes an upper plate 30 having an opening 31 communicating with the hollow portion 11 formed therethrough.

In addition, the guide member 40 configured across the upper plate 30 and the housing 10 to guide the elevation of the housing 10 and the hollow through the opening 31 so as to elevate the housing 10 The lower portion is fastened to the portion 11 in a screw manner, and includes a position adjusting rotor 50 for elevating the housing 10 through rotational driving in place.

In addition to this, it may further include an anti-loosening ring 60 configured on the top of the upper plate 30 to prevent loosening of the position adjusting rotor 50 through coupling with the position adjusting rotor 50, In this case, it is possible to prevent rotation of the position adjustment rotor 50 by configuring a meshing structure between the loosening prevention ring 60 and the position adjustment rotor 50.

The housing 10 is a kind of parent body constituting the cylinder 3, for example, the cross section may be formed in a cylindrical or polygonal shape, and the piston 20 and the piston 20 are formed through a hollow part 11 provided therein. It is configured to receive the valve pin 4 provided in the lower part so as to be able to move up and down while the working fluid for reciprocating the piston 20 is introduced.

That is, by connecting the fluid supply line 10c to the outside of the housing 10 and communicating the fluid supply line 10c and the hollow part 11 to each other, the working fluid flowing through the fluid supply line 10c is It is possible to easily reciprocate the piston 20 by hydraulic or pneumatic.

This housing 10 may be, for example, a single configuration or a separate configuration for the purpose of facilitating maintenance. In addition, the housing 10 having a separate configuration may include an outer housing 10a and a lower housing 10b, which are shown and shown.

More specifically, the outer housing (10a) is provided by being composed of a polyhedron in which the hollow portion (11) is provided, and the piston (20) is accommodated in the hollow portion (11) so as to reciprocate up and down, and the hollow portion (11) ), four guide members 40 may be arranged on each vertex side. In addition, the lower housing 10b may be provided at an inner lower part of the outer housing 10a and provided with a through part 12 communicating with the hollow part 11 to accommodate the lower part of the piston 20. .

In addition, the housing 10 may be configured with a first O-ring 13 between the positioning rotor 50 and the outer housing 10a to prevent leakage of the working fluid, and the outer housing 10a A second O-ring 14 may be configured between the and the piston 20. In addition, a third O-ring 15 may be formed between the outer housing 10a and the lower housing 10b, and a fourth O-ring 16 may be formed double between the lower housing 10b and the piston 20. Can be provided.

Therefore, according to an embodiment of the present invention, it is possible to improve the operating reliability of the valve pin 4 through easy reciprocating movement of the piston 20 through the structural improvement of the housing 10, as well as the housing ( As the maintenance of 10) is easy, there is an improved effect in terms of overall maintenance of the cylinder 3.

On the other hand, the piston 20 according to an embodiment of the present invention reciprocates by hydraulic pressure or pneumatic pressure, thereby raising and lowering the valve pin 4 provided in the lower portion. For example, the piston 20 and the valve pin 4 have a fastening structure, forming a hook shape in the lower portion of the piston 20, and processing a groove corresponding to the hook shape on the upper portion of the valve pin 4 to make the valve pin It can be configured in a manner that is mutually concluded through the rotation of (4).

However, as an example, it should be noted in advance that the fastening structure for providing the valve pin 4 at the lower portion of the piston 20 is not necessarily limited thereto.

Here, the hydraulic cylinder 3 circulates and cools the internal working fluid, thereby improving cooling efficiency, cooling the working fluid, and performing an O-ring. It may include a Free Cooling System to protect the sealing parts (Free Cooling System).

The free cooling system can be easily implemented by applying a check valve structure in the piston 20. However, the following detailed information is only an example, and the free cooling system is not necessarily limited thereto.

For example, by processing the protrusion 21 which is formed to protrude from the upper portion of the piston 20, the second O-ring 14 is formed, the inner circumference is in the form of a thread, and the flow space 22 passing through the protrusion 21 ). And the circulation passage 24 is formed through the inside, and the outer periphery is configured by screwing the valve member 23 in the form of a thread to the upper portion of the flow space 22, and a spherical check in the lower portion of the flow space 22 It is configured to accommodate the valve (25).

Here, the lower portion of the flow space 22 and the lower portion 24a of the circulation passage 24 are formed relatively smaller than the diameter of the check valve 25, so that when the gate 1a is closed, the check valve 25 22) to prevent separation. In addition, the circulation passage 24 has a lower portion 24a in an oblique direction so as not to be blocked by a check valve 25 rising along the working fluid when the gate 1a is opened, and the diameter of the upper portion 24b is relatively It can be configured widely.

Accordingly, according to an embodiment of the present invention, it is possible to easily maintain the temperature of the working fluid without using, for example, an individual cooling plate through the free cooling system.

The valve pin 4 that rises and descends in connection with the piston 20 has an upper part fastened to the piston 20, while a lower part is located in a nozzle 2 configured at the lower part of the manifold 1. Will be discharged.

Here, the nozzle 2 may be fixedly coupled to the lower portion of the manifold 1 in a screw manner, and a spiral heating line 2c may be formed on the outer periphery to easily maintain the molten state of the molten resin. .

In addition, the nozzle 2 is configured with a nozzle tip 2a inside the lower part to discharge molten resin when the valve pin 4 is raised and lowered, and for the purpose of preventing separation of the nozzle tip 2a, the nozzle 2 The union (2b) may be provided to be fastened to the lower end of the screw method.

For example, the molten resin injected into the manifold 1 through the gate 1a is supplied to the nozzle 2 while flowing along the flow path 1b formed inside the manifold 1, and the cylinder 3 By raising and lowering the valve pin 4 through the nozzle tip 2a and filling into the cavity of the injection mold, it is possible to mass-produce a molded product.

At this time, the valve pin 4 may have a different height depending on the assembly tolerance with the piston 20 or the tolerance generated when the cylinder 3 is assembled. For example, the valve pin 4 may have a different height. If the height is different, the amount of molten resin injected into the injection mold may vary.

As an example, if the heights of the valve pins 4 composed of at least two or more to respond to the multi-gate of the injection mold are different, variations may occur in the injection amount of the molten resin, which consequently reduces molding quality. Since it acts as a triggering factor, its position is adjusted and operated.

To this end, the housing 10 according to an embodiment of the present invention and the upper plate 30 configured on the upper portion of the housing 10 are configured with a position adjustment gap G, and the upper plate 30 and the housing The guide member 40 is configured over (10). And through the opening 31 formed in the center of the upper plate 30, by screwing the lower portion of the position adjustment rotor 50 to the hollow portion 11 in a screw manner to rotate the position adjustment rotor 50 in place. By driving, the housing 10 is raised and lowered to adjust the position of the valve pin 4.

That is, the upper plate 30 is configured with an opening 31 communicating with the hollow part 11 formed in the center to form a position adjustment gap G at the upper part of the housing 10 through the guide member 40. .

The guide member 40 is configured over the upper plate 30 and the housing 10 to guide the lifting of the housing 10. The guide member 40 may be configured as a cylindrical guide pipe, and the upper portion may be fixedly coupled to the upper plate 30 through a long bolt 41 that is relatively longer than the guide member 40.

The positioning rotor 50 has a polygonal fastening space 50a formed in a hexagonal shape so as to elevate the housing 10 through rotational driving, and is formed in the shape of a groove in the upper center of the housing 10. The lower part is fastened to the part 11 by a screw method. Conversely, instead of the fastening space 50a, a polygonal protrusion is formed on the upper portion of the position adjusting rotor 50, and the position adjusting rotor 50 can be rotated by holding and rotating the polygonal protrusion.

Here, the position adjustment rotor 50 is rotated in place, while the housing 10 is positioned between the position adjustment rotor 50 and the upper plate 30 so as to be elevated along the position adjustment rotor 50. A stopper structure can be configured.

For example, the stopper part 52 is formed in a disk shape on the upper part of the position adjustment rotor 50, and the upper part of the upper plate 30 is processed in a disk shape to correspond to the stopper part 52, thereby (52) will be cracked down.

Therefore, according to an embodiment of the present invention, the position of the valve pin 4 can be easily adjusted only by rotating the position adjustment rotor 50 from the outside of the housing 10 without disassembling the cylinder 3. By being adjustable, for example, in a hot runner system, it is possible not only to solve the problem that the height between the valve pins 4 is different, but also to facilitate maintenance of the cylinder 3 and to extend the replacement cycle of, for example, internal parts. have.

Here, when the position adjustment of the valve pin 4 is completed by raising and lowering the housing 10 through the rotation drive of the position adjustment rotor 50 through the stopper part 52, the position adjustment rotor 50 is released. The ring 60 for preventing loosening is fastened to the upper plate 30 through, for example, a bolt, which is a common fastening means.

That is, the loosening prevention ring 60 is provided for the purpose of preventing the loosening of the positioning rotor 50 when the position adjustment of the valve pin 4 is completed. For example, the first uneven portion 61 having a polygonal shape on the inner periphery ) Is formed, and a second uneven portion 51 corresponding to the first uneven portion 61 is formed on the outer periphery of the position adjustment rotor 50 to form a type of engagement structure, so that the position adjustment rotor 50 ) To prevent loosening.

However, this is only an example, and is not limited to the first and second uneven portions 61 and 51 of the loosening prevention structure of the position adjustment rotor 50 through the loosening preventing ring 60, the first, 2 The shape of the uneven portions 61 and 51 is also not limited to the polygon shape.

Therefore, according to an embodiment of the present invention, it is possible to effectively improve the reliability related to the position adjustment of the valve pin 4 through the anti-loosening ring 60.

Meanwhile, the cylinder 3 according to an embodiment of the present invention is configured and operated on the upper portion of the manifold 1 as described above. Therefore, heat from the manifold 1 in which the heater 1c is configured to maintain the molten resin in the molten state can be transferred, and the temperature of the cylinder 3 and the working fluid can be increased by this heat transfer. The life of representative internal parts may be shortened, and thus molten resin leakage may occur.

Here, the heater 1c may have a power unit 1d integrally configured, and may be buried on both sides of the manifold 1. And, for example, while the manifold 1 under such a configuration is easy to maintain the molten state of the molten resin, heat can be transferred to the housing 10.

In order to prevent such heat transfer, the cylinder 3 according to an embodiment of the present invention further includes a cooling means 70 configured between the housing 10 and the manifold 1 to cool the housing 10 can do.

The cooling means 70, for example, is configured with a position adjustment gap (G) in the lower portion of the housing 10 so as to facilitate the lifting of the housing 10, and formed in communication with the hollow portion 11 to facilitate the valve pin The passage portion 71a through which (4) passes is formed in the center, the cooling plate 71 having the cooling passage 72 formed therein, and the cooling plate 71 formed outside of the cooling plate 71 to be cooled in the cooling passage 72 A cooling line 73 for supplying a medium may be included.

The cooling plate 71 may have an outer shape corresponding to the outer housing 10a so as to have a sense of unity with the housing 10, and the lower end of the guide member 40 may be inserted in the upper portion. In addition, the lower end of the long bolt 41 inserted from the upper plate 30 may be configured to be screwed to the upper portion, and may be configured to be bolted to the manifold 1 and disposed at the top. This cooling plate 71 may be referred to as a cooling block.

Therefore, according to an embodiment of the present invention, the cooling medium is supplied to the cooling passage 72 through the cooling line 73 to cool the cooling plate 71, so that the heat of the manifold 1 is transferred to the housing 10. Transmission can be prevented, and thus the life of the pin guide 1e and pin guide bush 1f configured on the upper part of the manifold 1 to guide the elevation of the valve pin 4 can also be easily extended. I can.

That is, in the manifold 1, for the purpose of guiding the elevation of the valve pin 4, for example, a pin guide 1e is formed at the top, and a pin guide bush 1f is formed outside the pin guide 1e. I can.

Therefore, when the cooling means 70 is configured between the manifold 1 and the housing 10, the cooling means 70 is configured to accommodate the upper portions of the pin guide bush 1f and the pin guide 1e. , As a cooling effect, it is possible to extend the life of the pin guide bush (1f) and the pin guide (1e), as well as to prevent leakage of molten resin that may occur between the pin guide (1e) and the valve pin (4). have.

7 to 8, the cylinder 1 capable of adjusting the position of the valve pin according to an embodiment of the present invention, for example, by inserting and fastening a hexagon wrench (L) into the fastening space (50a) to adjust the position of the rotor ( By rotating 50) in one direction, the position of the valve pin 4 is adjusted.

That is, due to the rotational drive of the position adjustment rotor 50, the outer housing 10a fastened with the screw method is guided to the guide member 40 and lifted, and due to the lift of the outer housing 10a, the piston ( 20) This position is adjusted and consequently the position of the valve pin 4 configured to cooperate with the piston 20 is adjusted.

Here, the position adjustment rotor 50 may be configured with a ruler 50b arranged radially on the surface thereof, and the position of the valve pin 4 can be adjusted while viewing this, so it is easy in terms of operation convenience. have.

For example, the positioning rotor 50 may move the valve pin 4 by 0.05 mm per unit of the ruler 50b. And when the position adjustment of the valve pin 4 through the position adjustment rotor 50 is completed, by installing a loosening prevention ring 60 on the upper plate 30 and coupling it with the position adjusting rotor 50, the It prevents the loosening of the position adjustment rotor 50.

Therefore, according to an embodiment of the present invention, the position of the valve pin 4 can be adjusted by rotating the position adjusting rotor 50 exposed to the outside of the housing 10 to raise and lower the housing 10. , Operation is convenient and maintenance of the cylinder 3 is easy, so it is effective in terms of improving the reliability related to the position adjustment of the valve pin 4.

Although the present invention has been described in detail through an embodiment, this is for describing the present invention in detail, and a cylinder capable of adjusting the position of a valve pin according to the present invention is not limited thereto. And the terms such as "include", "consist of", or "have" described above mean that the corresponding component can be included unless otherwise stated, so excluding other components It should be construed as that it may further include other components, and all terms including technical or scientific terms are generally understood by those of ordinary skill in the technical field to which the present invention belongs, unless otherwise defined. It has the same meaning as being.

In addition, the above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains can various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the exemplary embodiments disclosed in the present disclosure are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present disclosure is not limited by this exemplary embodiment. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

1-Manifold 1a-Gate
1b-Euro 1c-heater
1d-power supply 1e-pin guide
1f-pin guide bush 2-nozzle
2a-Nozzle Tip 2b-Union
2c-heating line 3-cylinder
4-valve pin 10-housing
10a-outer housing 10b-lower housing
10c-Fluid supply line 11-Hollow part
12-penetration part 13-first O-ring
14-2nd O-ring 15-3rd O-ring
16-4th O-ring 20-Piston
21-protrusion 22-flow space
23-valve member 24-circulation passage
24a-lower part of circulation passage 24b-upper part of circulation passage
25-check valve 30-top plate
31-opening 40-guide member
41-Long bolt 50-Rotor for positioning
50a-fastening space 50b-ruler
51-2nd uneven part 52-Stopper part
60-Anti-loosening ring 61-1st uneven part
70-cooling means 71-cooling plate
71a-passage part 72-cooling passage
73-Cooling line G-Gap for positioning
L-wrench

Claims (11)

A gate into which the molten resin is injected is formed, a flow path through which the molten resin injected through the gate flows is formed, a nozzle for discharging the molten resin is formed on the upper part of the manifold, and the hollow portion formed through A housing provided inside;
A piston configured in the hollow portion, provided with a valve pin at a lower portion thereof, and reciprocating by the working fluid introduced into the hollow portion;
An upper plate having a position adjustment gap on the upper portion of the housing and having an opening communicating with the hollow portion;
A guide member configured across the upper plate and the housing to guide the housing when the housing is elevated;
The lower part penetrates the opening so that the housing can be raised and lowered, and the lower part is screwed into the hollow part, and the disk-shaped stopper part intercepted to the upper plate is constructed on the upper part, and the housing is raised and lowered through rotational drive in place through the stopper part. A position adjustment rotor; And
A loosening prevention ring configured on an upper portion of the upper plate to prevent loosening of the positioning rotor through coupling with the positioning rotor;
Including,
The position of the valve pin, characterized in that the first uneven portion of the polygon shape is formed on the inner periphery of the ring for preventing loosening, and the second uneven portion corresponding to the first uneven portion is formed on the outer periphery of the positioning rotor so as to form a meshing structure. Adjustable cylinder.
delete The method according to claim 1,
The housing is provided with a hollow portion, the outer housing is configured with a guide member arranged around the hollow portion; And
A lower housing configured under the outer housing and provided with a through portion communicating with a hollow portion to accommodate a lower portion of the piston;
A cylinder capable of adjusting the position of the valve pin, including.
The method according to claim 1,
A free cooling system for circulating the working fluid inside the cylinder;
It further includes,
The free cooling system includes a flow space configured through a piston;
A valve member coupled to the upper portion of the flow space and having a circulation flow passage therethrough;
A check valve configured to be accommodated in the lower portion of the flow space and lifted through the working fluid flowing into the flow space;
Cylinders capable of adjusting the position of the valve pin comprising a.
The method according to claim 1,
The position adjusting rotor is a cylinder capable of adjusting the position of the valve pins having a polygonal fastening space at the upper center.
delete The method according to claim 1,
A cooling means configured between the manifold and the housing to prevent heat of the manifold from being transferred to the housing;
A cylinder that can adjust the position of the valve pin further comprising.
The method of claim 7,
The cooling means comprises a cooling plate having a position adjustment gap in the lower part of the housing, the passage part formed in communication with the hollow part, through which the valve pin passes, and the cooling passage formed therein; And
A cooling line configured outside the cooling plate to supply a cooling medium to a cooling passage;
A cylinder that can adjust the position of the valve pin further comprising.
The method of claim 7,
The manifold is configured at the upper portion of the pin guide to guide the elevation of the valve pin; And
A pin guide bush configured outside the pin guide;
Cylinders capable of adjusting the position of the valve pin further comprising.
The method of claim 8,
The lower end of the guide member is inserted into the upper part of the cooling plate, and the guide member is composed of a guide pipe, and the position of the valve pin fixedly coupled to the cooling plate is adjusted through a long bolt inserted from the upper plate and fastened to the cooling plate. This possible cylinder.
The method according to claim 1,
The positioning rotor is a cylinder capable of adjusting the position of the valve pins, which are arranged radially with a ruler for indicating the rotational position on the surface.

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