KR101579886B1 - A valve motor device for an ejection molding apparatus - Google Patents

A valve motor device for an ejection molding apparatus Download PDF

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Publication number
KR101579886B1
KR101579886B1 KR1020140067018A KR20140067018A KR101579886B1 KR 101579886 B1 KR101579886 B1 KR 101579886B1 KR 1020140067018 A KR1020140067018 A KR 1020140067018A KR 20140067018 A KR20140067018 A KR 20140067018A KR 101579886 B1 KR101579886 B1 KR 101579886B1
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KR
South Korea
Prior art keywords
screw
magnet
pin
valve
rotor
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KR1020140067018A
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Korean (ko)
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KR20150139118A (en
Inventor
이원식
이형우
Original Assignee
기마로보 주식회사
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Priority to KR1020140067018A priority Critical patent/KR101579886B1/en
Priority to PCT/KR2014/010003 priority patent/WO2015186868A1/en
Publication of KR20150139118A publication Critical patent/KR20150139118A/en
Application granted granted Critical
Publication of KR101579886B1 publication Critical patent/KR101579886B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C45/281—Drive means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C45/281—Drive means therefor
    • B29C2045/2824—Needle valves driven by an electric motor

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention relates to a valve motor device of an injection molding machine.
A valve motor device of an injection molding machine for driving a valve pin for opening and closing an injection hole for injecting a raw material into a mold is provided with a stator having a coil in the valve motor device of the injection molding machine according to the embodiment of the present invention housing; A rotating shaft rotatably disposed in the housing and having a rotor acting on the stator; A depression formed to be recessed in the rotation shaft and having a first screw thread; A screw having a second screw thread interlocked with the first screw thread, the screw being received in a linear movement in the depression; A magnet installed on the rotary shaft; And a magnet sensing unit for sensing a rotation amount or a rotation angle of the magnet.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a valve motor device for an injection molding machine,

An embodiment of the present invention relates to a valve motor device of an injection molding machine.

Generally, an injection molding machine is used to mold a thermoplastic material by mass-producing and manufacturing various parts through a process of heating and melting a material of a thermoplastic material and injecting the material from a nozzle to a mold at a high pressure. The injection molding machine may include an injection device configured to inject a raw material such as a nozzle, and a valve device configured to open or close the nozzle depending on whether the raw material is injected.

1 shows the construction of a conventional injection molding machine.

The conventional injection molding machine includes a stationary mold 2 fixed at a predetermined position and a movable mold 3 movably arranged toward the stationary mold 2. [ The movable mold 3 is moved between the stationary mold 2 and the movable mold 3 in a state in which the movable mold 3 is moved to be engaged with the stationary mold 2, (8) is formed. A predetermined raw material may be injected into the injection part 8 to realize the shape of the article.

The fixed mold 2 is provided with a raw material supply portion 4 to which a raw material in a resin form is supplied, a flow portion 5 through which the raw material injected from the raw material injection portion 4 flows, And a nozzle part (6) extending toward the injection part (8). An injection hole 7 is formed at an end of the nozzle unit 6 to inject the raw material toward the injection unit 8.

Inside the nozzle part 6, there is provided a valve pin 9 as a "valve" or "valve device" which is provided so as to be linearly movable and selectively opens and closes the injection hole 7.

The stationary mold 2 further includes a motor device 10 for providing a driving force for moving the valve pin 9. The motor device 10 includes a driving unit including a stator and a rotor, and a rotating shaft 11 provided rotatably together with the rotor.

The motor device 10 further includes a coupler 12 coupled to the rotating shaft 11 and a pin holder 13 connecting the coupler 12 and the valve pin 9 to each other. The coupler 12 and the pin holder 13 are screwed together and the pin holder 13 can be linearly moved in the process of rotating the coupler 12 in a predetermined direction.

That is, the rotational motion of the rotary shaft 11 is converted into linear motion through the coupler 12 and the pin holder 13, and the valve pin 9 coupled to the pin holder 13 is rotated by the pin holder 13 ). ≪ / RTI >

FIG. 1 shows the valve pin 9 closing the injection hole 7. In this state, when the motor device 10 is driven and the rotor rotates in a predetermined direction, the valve pin 9 is driven by the power of the coupler 12 and the pin holder 13, , And can move upward.

When the valve pin 9 moves upward, the injection hole 7 can be opened and the raw material can be injected into the injection part 8 through the opened injection hole 7.

According to such a conventional injection molding machine, a coupler and a pin holder are separately required to convert the rotational motion of the motor device into a linear motion of the valve pin, and the volume of the motor device is increased by the coupler and the pin holder do.

As the volume of the motor device increases, the size of the stationary mold accommodating the motor device increases, and the material cost of the mold increases.

On the other hand, a related art application relating to an injection molding machine has been disclosed (Application No. 10-2004-0093581, entitled: Hot Runner Valve Gate Opening / Closing Device of Injection Mold, hereinafter referred to as Conventional Document).

The valve gate opening and closing apparatus according to the related art requires a complicated structure such as the roller 92, the spring 100, and the slider 110, which has a problem in that the manufacturing cost is increased and the reliability of operation is lowered.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve motor apparatus for an injection molding machine which can improve operational reliability with a simple structure.

A valve motor device of an injection molding machine for driving a valve pin for opening and closing an injection hole for injecting a raw material into a mold is provided with a stator having a coil in the valve motor device of the injection molding machine according to the embodiment of the present invention housing; A rotating shaft rotatably disposed in the housing and having a rotor acting on the stator; A depression formed to be recessed in the rotation shaft and having a first screw thread; A screw having a second screw thread interlocked with the first screw thread, the screw being received in a linear movement in the depression; A magnet installed on the rotary shaft; And a magnet sensing unit for sensing a rotation amount or a rotation angle of the magnet.

Further, the rotor is provided on the outer peripheral surface of the rotary shaft.

The rotor may be provided with one or a plurality of rotors, and the plurality of rotors may be spaced apart from each other and installed on an outer circumferential surface of the rotating shaft.

Further, the rotor includes a permanent magnet.

A fastening pin disposed to penetrate the screw; And a fastening guide having a cutout for guiding movement of the fastening pin.

In addition, the fastening fins extend in a direction perpendicular to the extending direction of the screw.

A coupling part formed to have a shape recessed at an end of the rotary shaft; And a magnet holder coupled to the coupling portion and having the magnet mounted thereon.

A substrate on which the magnet sensing unit is installed; And a substrate mounting part for mounting the substrate on one side of the housing, wherein the substrate mounting part is formed with a through hole for allowing the magnet and the magnet sensing part to face each other.

Further, the screw further includes a valve pin coupling portion having a thread to which the valve pin is coupled, and a fixing member for fixing the coupling pin to the screw is coupled to the valve pin coupling portion .

In addition, the rotation shaft includes a cylindrical shaft body in which the depression is formed; And a flange portion extending from the shaft body in an outer radial direction.

Further, the flange portion is supported on the outer surface of the housing.

A power supply unit for supplying power to the coil; And a control unit for controlling on / off of the power supply unit according to the moving distance of the screw.

The apparatus further includes a timer for accumulating the elapsed time after the screw is moved so that the valve pin opens the injection hole.

According to the embodiment of the present invention, there is an effect that the screw is accommodated in the rotating shaft and the screw can be moved linearly and stably according to the rotation of the rotating shaft.

In addition, since the screw is directly fastened to the inside of the rotary shaft, there is no need for a component such as a screw nut to be combined with the screw, thereby reducing the cost of parts and simplifying the manufacturing process.

In addition, since the fastening pin provided on the screw can be guided by the fastening guide portion of the bearing cover, it is possible to prevent a phenomenon that the screw is rotated or unintentionally rotated in the course of linear movement of the screw.

In addition, since the valve pin is directly connected to the screw, the valve pin can be linearly moved together with the screw, so that the size of the motor device can be reduced.

Further, as the motor device becomes compact, the size of the mold on which the motor device is installed can be reduced, thereby reducing the material cost required for manufacturing the mold.

In addition, since the magnet is provided at the end of the rotary shaft, and the magnet sensing part for sensing the rotation value or the rotation amount of the magnet is provided at the position facing the magnet, the driving of the motor device can be precisely It has the advantage of being able to control.

1 is a view showing a configuration of an injection molding machine having a conventional motor device.
2 is a view showing an appearance of a valve motor apparatus according to an embodiment of the present invention.
3 and 4 are exploded perspective views showing a configuration of a valve motor apparatus according to an embodiment of the present invention.
5 is a cross-sectional view showing a configuration of a valve motor apparatus according to an embodiment of the present invention.
6 is a block diagram showing a configuration of a valve motor apparatus according to an embodiment of the present invention.
7 is a cross-sectional view illustrating an operation of a valve motor apparatus according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

3 and 4 are exploded perspective views showing a configuration of a valve motor apparatus according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of the valve motor apparatus according to an embodiment of the present invention. Sectional view showing a configuration of a valve motor apparatus according to an embodiment.

The injection molding machine according to the present embodiment employs the configuration described in Fig. 1, but it is disclosed in advance that there is a difference from the prior art only in the configuration of the motor device.

2 to 5, a valve motor apparatus 100 according to an embodiment of the present invention includes a housing 110 in which a stator 112 is disposed, And includes a front cover 120 rotatably coupled to the rotor 122 and a rear cover 130 disposed at the rear of the housing 110 and coupled to the controller 150. [

The combination of the stator 112 and the rotor 122 is called a "drive part ".

In the first half of the specification, the front direction such as "forward" or "front end" means a direction from the motor device toward the valve pin, and a direction indicating " rear "Quot; and "shear ", respectively.

In detail, the housing 110 has a cylindrical or polygonal shape so that the stator 112 can be received therein. The front end portion and the rear end portion of the housing 110 may be formed to open through the rotation shaft 140. The stator 112 may include a coil to which power is supplied.

The front cover 120 is coupled to the front of the housing 110. The front cover 120 is formed with a first cover through hole 121 into which the rotation shaft 140 can be inserted.

The rotation shaft 140 includes a shaft body 140a having a substantially cylindrical shape and a flange portion 145 extending from the shaft body 140a in an outer radial direction. The flange 145 is supported on the outer surface of the housing 110. Here, the radial direction is understood as a direction perpendicular to the front or rear direction.

The rotor 122 is installed on the outer peripheral surface of the shaft body 140a. As an example of the installation method of the rotor 122, the rotor 122 may be bonded to the outer peripheral surface of the shaft body 140a.

The rotor 122 may include at least one permanent magnet. For example, the rotor 122 includes a plurality of permanent magnets, and the plurality of permanent magnets may be spaced apart from each other and coupled to the outer circumferential surface of the rotor 122.

The rotor 122 may be accommodated in the housing 110 and rotatably disposed inside the stator 112. When power is applied to the coil of the stator 112, an electromagnetic force is applied to the rotor 122 to rotate in a predetermined direction. The rotor 122 may be configured to be rotated clockwise or counterclockwise (normal rotation), and the rotation shaft 140 may be rotated together with the rotor 122.

On both sides of the rotary shaft 140, a plurality of bearings 127 and 128 for supporting the rotary shaft 140 are provided. The plurality of bearings 127 and 128 include a first bearing 127 provided at a rear portion of the rotary shaft 140 and a second bearing 128 provided at a front portion thereof.

In detail, the first bearing 127 is arranged to surround the rotary shaft 140 at a front side of the rotor 122, and the second bearing 128 is disposed at a rear side of the rotor 122, 140, respectively.

The first bearing 127 is supported on the inner side of the rear cover 130 and the second bearing 128 is supported on the inner side of the front cover 120.

The rotation shaft 140 is formed with a depression 141 in which the screw 163 is received. The depressed portion 141 is recessed toward the rear from the front portion of the rotation shaft 140 and forms an inner peripheral surface of the rotation shaft 140.

The outer circumferential surface of the screw 163 may be screwed to the inner circumferential surface of the rotating shaft 140. In detail, a first thread 141a is formed on the inner circumferential surface of the rotation shaft 140, that is, the depression 141. A second screw thread 163a is formed on the outer circumferential surface of the screw 163 to interlock with the first screw thread 141a.

When the rotation shaft 140 is rotated, the first screw thread 141a and the second screw thread 163a are interlocked with each other, so that the screw 163 linearly moves forward or backward.

For example, when the rotation shaft 140 rotates clockwise, the screw 163 moves backward. When the rotation shaft 140 rotates counterclockwise, the screw 163 can be moved forward.

The motor device 100 further includes a fastening pin 165 coupled through the screw 163. The fastening pin 165 may extend through the through hole 163d of the screw 163. The through hole 163d is formed to pass through the screw 163 in a vertical direction.

The direction in which the coupling pin 165 extends may form a direction perpendicular to the direction in which the screw 163 extends.

A fixing member 166 for fixing the coupling pin 165 to the screw 163 is provided in front of the coupling pin 165. The fixing member 166 may be a screw member, and may be screwed to the valve pin engaging portion 163c.

The motor device 100 is provided with a bearing cover 170 that forms the front surface of the motor device 100. The bearing cover (170) is provided with a fastening guide portion (172) protruding rearward from the bearing cover (170).

The fastening guide portion 172 may be formed with a cutout portion 172a into which the fastening pin 165 is inserted. The cutout portion 172a is formed by cutting at least a portion of the fastening guide portion 172 and may be formed at the upper portion and the lower portion of the fastening guide portion 172, respectively.

In the process of moving the screw 163 forward or backward, the fastening pin 165 may be inserted into the cutout 172a and be moved.

The movement of the screw 163 can be guided by the movement of the fastening pin 165 along the fastening guide portion 172 and thus the screw 163 can be prevented from being twisted or oscillated.

The screw 163 includes a screw depression 163b on which the magnet holder 126 is mounted. The screw depression (163b) is formed to be recessed forward from the rear end of the screw (163). At least a portion of the magnet holder 126 may be inserted into the screw depression 163b.

A valve pin coupling portion 163c to which the valve pin 9 is coupled is formed at a front portion of the screw 163. The valve pin engaging portion 163c is formed to be recessed rearward from the front end of the screw 163 and threaded to be screwed with the valve pin 9. The valve pin 9 may be coupled to the valve pin coupling portion 163c and extend to the injection hole 7 side.

However, as another embodiment, a separate holder may be coupled to the valve pin coupling portion 163c, and the valve pin 9 may be coupled to the holder.

A magnet 125 may be coupled to the rotating shaft 140.

In detail, the motor device 100 includes a magnet 125 having magnetism and rotatable together with the rotation shaft 140, and a magnet holder 126 for fixing the magnet 125 to the rotation shaft 140 .

The rotation shaft 140 is formed with a coupling portion 142 to which the magnet holder 126 is coupled. The engaging portion 142 is formed to be recessed forward from the rear end of the rotation shaft 140 and the magnet holder 126 is installed to be received inside the engaging portion 142.

When the magnet holder 126 is mounted on the engaging portion 142, the magnet 125 may be positioned to face the controller 150. The front portion of the magnet holder 126 is inserted into the screw depression portion 163b as described above. Therefore, the magnet holder 126 can be stably supported on the rotation shaft 140 and the screw 163. [

The rear cover 130 is formed with a second cover through hole 131 through which the rotation shaft 140 is inserted. The second cover through-hole 131 is formed to penetrate from the front surface to the rear surface of the rear cover 130.

A seating part 132 on which the controller 150 is mounted is formed on the rear cover 130. The seating part 132 is positioned so as to surround the outside of the second cover through-hole 131.

The control device 150 includes a substrate 151 and a substrate mount 152 for mounting the substrate 151 on the rear cover 130. [ The substrate 151 may be provided with a magnet sensing unit 155 for sensing a rotation amount or a rotation angle of the magnet 125. The magnet sensing unit 155 may be installed on the substrate 151 in the form of a chip.

The magnet 125 and the magnet sensing unit 155 are collectively referred to as a "sensing apparatus ".

The board mounting portion 152 is coupled to the seating portion 132. The seating part 132 is configured to have a flat surface so that the board mounting part 152 can be stably fixed.

A through hole 153 is formed in the substrate mounting part 152 so that the magnet 125 can be exposed to the magnet sensing part 155. By the through hole 153, the board mounting portion 152 is configured to have a substantially ring shape. That is, the magnet 125 and the magnet sensing part 155 may be arranged to face each other through the through hole 153. [

6 is a block diagram showing a configuration of a valve motor apparatus according to an embodiment of the present invention.

6, a control unit 150 according to an embodiment of the present invention includes a controller 158 for controlling on / off of a power supply unit 159 to apply power to a coil of the stator 112, And a magnet sensing unit 155 sensing the amount of rotation or the rotation angle of the magnet 125 and transmitting the sensed amount or rotation angle to the control unit 158.

The power supply unit 159 may supply current to the coil in both directions. For example, when the power supply unit 159 supplies a current to the coil in one direction, the rotor 122 rotates in a forward direction, and when the current is supplied in the other direction, the rotor 122 rotates reversely.

The motor device 100 further includes a timer 180 for accumulating the elapsed time after the movement of the screw 163 so that the valve pin 9 opens the injection hole 7.

The control operation according to the embodiment of the present invention will be briefly described.

When power is applied to the coil of the stator 112 through the power supply unit 159, a rotational force is applied to the rotor 122 by an electromagnetic field. When the rotor 122 is rotated in a predetermined direction, the rotation shaft 140 may be rotated together with the rotor 122.

When the first screw thread 141a and the second screw thread 163a are interlocked with each other according to the rotation of the rotary shaft 140, the screw 163 can be moved forward or backward.

Meanwhile, the magnet 125 is rotated together with the rotation shaft 140. Therefore, the amount of rotation or the rotation angle of the magnet 125 may correspond to the rotation amount or the rotation angle of the rotation shaft 140, which can be detected by the magnet sensing unit 155.

4 and 5, since the magnet 125 and the magnet sensing unit 155 are arranged to face each other with the through hole 153 of the substrate mounting unit 152 interposed therebetween, the magnet 125 Can be easily sensed by the magnet sensing unit 155. The magnet sensing unit 155 can sense the rotation amount or the rotation angle of the magnet.

 The rotation amount or rotation angle of the rotation shaft 140 may be converted into the linear movement distance of the screw 163 by the control unit 158.

As a result, when the predetermined amount of rotation or the rotation angle of the magnet 125 is sensed, the moving distance of the screw 163 can be converted, thereby obtaining information about the movement distance of the valve pin 9 .

When the valve pin 9 moves a predetermined distance for opening or closing the injection hole 7, the power supply through the power supply unit 159 is stopped and the driving of the driving units 112 and 122 can be stopped.

The elapsed time in the state in which the driving units 112 and 122 are stopped is accumulated by the timer 180. When the accumulated time reaches the set time, the driving units 112 and 122 are driven again, 9) can be performed again.

That is, the valve pin 9 can be moved to close the injection hole 7 when the set time has elapsed after the valve pin 9 is moved to open the injection hole 7.

7 is a cross-sectional view illustrating an operation of a valve motor apparatus according to an embodiment of the present invention.

Referring to FIGS. 1, 5 and 7 together, when the driving units 112 and 122 are driven, the rotation shaft 140 rotates in a predetermined direction, so that the screw 163 is moved forward or backward.

For example, when the rotation shaft 140 rotates clockwise, the screw 163 can move backward. When the rotation shaft 140 rotates counterclockwise, the screw 163 can move forward.

The moving distance of the screw 163 may be determined corresponding to the rotation amount or rotation angle of the magnet 125, as described above.

For example, when the driving units 112 and 122 are rotated forward or reverse, the screw 163 is moved forward or backward. In this state, when the rotation amount or the rotation angle of the magnet 125 reaches a set amount or a set angle The driving units 112 and 122 can be stopped. At this time, the moving distance of the screw 163 corresponds to a predetermined distance.

In the process of moving the screw 163 forward or backward, the coupling pin 165 moves along the inner space of the cutout 172a. That is, the fastening pin 165 can be guided and linearly moved by the fastening guide portion 172, thereby preventing the screw 163 from rotating or swinging.

When the screw 163 moves backward, the valve pin 9 can be moved to open the injection hole 7. When the injection hole 7 is opened, the raw material flowing in the flow path portion 5 may be supplied to the injection portion 8 through the injection hole 7 and injection-molded into a predetermined shape.

When the preset amount of the raw material is supplied to the injection unit 8, that is, when the valve pin 9 reaches the set time, the driving units 112 and 122 can rotate reversely. Here, the opening time of the valve pin 9 may be accumulated by the timer 180.

In accordance with the reverse rotation of the driving units 112 and 122, the rotation shaft 140 rotates counterclockwise, and the screw 163 can be moved forward. When the screw 163 is moved forward, the valve pin 9 is also moved forward so that the valve pin 9 can be moved to a position closing the injection hole 7.

When the injection hole 7 is closed, the supply of the raw material to the injection part 8 through the injection hole 7 can be stopped.

According to this structure and operation, since the structure of the motor device is simplified, the size of the mold on which the motor device is mounted is reduced, and the material cost required for manufacturing the mold is reduced.

Further, since the drive of the motor device can be precisely controlled by the interaction between the magnet and the magnet sensing part, the quality of the molded product through the injection molding machine can be improved.

100: motor device 110: housing
112: stator 120: front cover
122: Rotor 125: Magnet
126: Magnet holder 130: Rear cover
132: seat part 140:
141: depression portion 142:
150: control device 151: substrate
152: substrate mounting part 153: through hole
155: Magnet detection unit 160: Screw assembly
161: nut portion 163: screw
165: fastening pin 170: bearing cover
172: fastening guide part 172a: incision part

Claims (13)

A valve motor apparatus for an injection molding machine for driving a valve pin for opening and closing an injection hole for injecting a raw material into a mold,
A housing having a stator having a coil;
A rotating shaft rotatably disposed in the housing and having a rotor acting on the stator;
A depression formed to be recessed in the rotation shaft and having a first screw thread;
A screw having a second screw thread interlocked with the first screw thread, the screw being received in a linear movement in the depression;
A fastening pin disposed to penetrate the screw;
A fastening guide portion having a cutout portion for guiding movement of the fastening pin;
A magnet installed on the rotary shaft; And
And a magnet sensing unit for sensing a rotation amount or a rotation angle of the magnet. The method according to claim 1,
Wherein the rotor is provided on an outer peripheral surface of the rotary shaft. 3. The method of claim 2,
Wherein one or more of the rotor is provided and a plurality of the rotors are spaced apart from each other and installed on an outer circumferential surface of the rotary shaft. The method of claim 3,
Wherein the rotor includes a permanent magnet. delete The method according to claim 1,
Wherein the fastening pin extends in a direction perpendicular to an extending direction of the screw. The method according to claim 1,
An engaging portion formed to have a shape recessed at an end of the rotation shaft; And
And a magnet holder coupled to the coupling portion and having the magnet mounted thereon. The method according to claim 1,
A substrate on which the magnet sensing unit is installed; And
A substrate mounting portion for mounting the substrate on one side of the housing,
In the substrate mounting portion,
And a through hole is formed in the magnet so that the magnet and the magnet sensing part are opposed to each other. The method according to claim 1,
In the screw,
Further comprising a valve pin coupling portion having a thread to which the valve pin is coupled,
And a fixing member for fixing the coupling pin to the screw is coupled to the valve pin coupling portion. The method according to claim 1,
In the rotation shaft,
A cylindrical shaft body in which the depression is formed; And
And a flange portion extending from the shaft body in an outer radial direction. 11. The method of claim 10,
Wherein the flange portion is supported on an outer surface of the housing. The method according to claim 1,
A power supply unit for supplying power to the coil; And
And a control unit for controlling on / off of the power supply unit according to the moving distance of the screw. 13. The method of claim 12,
Further comprising a timer for accumulating the elapsed time after the movement of the screw so that the valve pin opens the injection hole.
KR1020140067018A 2014-06-02 2014-06-02 A valve motor device for an ejection molding apparatus KR101579886B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020140067018A KR101579886B1 (en) 2014-06-02 2014-06-02 A valve motor device for an ejection molding apparatus
PCT/KR2014/010003 WO2015186868A1 (en) 2014-06-02 2014-10-23 Valve motor device of injection molding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140067018A KR101579886B1 (en) 2014-06-02 2014-06-02 A valve motor device for an ejection molding apparatus

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KR20150139118A KR20150139118A (en) 2015-12-11
KR101579886B1 true KR101579886B1 (en) 2015-12-24

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WO2023213336A2 (en) * 2023-08-30 2023-11-09 吴茂庭 Motor, electric control hydraulic valve and control system

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JP2005170029A (en) * 2003-12-09 2005-06-30 Hyuk Joong Kim Valve gate device for injection molding machine
KR100676728B1 (en) * 2006-03-13 2007-02-01 김혁중 Electric valve system for injection molding

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KR200280604Y1 (en) * 2002-04-02 2002-07-04 김혁중 Valve system for injection molding
KR100448373B1 (en) * 2002-05-15 2004-09-10 현대자동차주식회사 Control method of gate valve for injection molding
BRPI0414292A (en) * 2003-11-11 2006-11-07 Plastic Engineering & Technica valve gate assembly
KR101163866B1 (en) * 2009-04-30 2012-07-09 김혁중 Hotrunner system
JP5417132B2 (en) * 2009-11-26 2014-02-12 Ｎｔｎ株式会社 Electric actuator
KR101252574B1 (en) * 2011-02-18 2013-04-09 지이엠(주) A nozzle appratus with double valve pins for hot runner system of injection mould

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Publication number Priority date Publication date Assignee Title
JP2005170029A (en) * 2003-12-09 2005-06-30 Hyuk Joong Kim Valve gate device for injection molding machine
KR100676728B1 (en) * 2006-03-13 2007-02-01 김혁중 Electric valve system for injection molding

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KR20150139118A (en) 2015-12-11

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