KR101621003B1 - The cylinder for up-and-down and rotational motion - Google Patents

Abstract

The present invention relates to a cylinder capable of vertically moving and rotating, and is capable of selectively discharging resin in an injection mold apparatus having two resin supply passages for injecting different colors in the same injection mold after one color is injected So that the load can be rotated along with the upward and downward movements.
A first rod hole is formed at the center of the upper surface, a piston hole is formed at an upper portion of the piston hole to extend to the lower end thereof, a second rod hole is formed at the center thereof and an outer diameter thereof is fixed to the lower end of the piston hole A pair of up-and-down air nozzles which are fixedly mounted on the inner and outer surfaces of the pair of upward and downward air nozzles and penetrate the inner and outer surfaces of the piston hole and the upper and lower ends of the piston hole, And a second rotary nozzle for spraying air in a tangential direction opposite to the first rotary nozzle;
The upper portion is formed in a disk shape extending through the first rod hole and the lower end of which has an outer diameter stepwise. The first seal ring is attached to the groove recessed along the outer diameter surface to closely contact the inner diameter surface of the piston hole. An upper piston in which a first main rod hole is formed;
The lower part is formed in a circular plate shape passing through the second rod hole and having an upper end with a stepped outer diameter. The second sealing part is attached to the groove recessed along the outer diameter surface and is closely attached to the inner diameter surface of the piston hole. A lower piston in which a second main rod hole is formed;
The upper and lower portions of the upper piston and the lower piston are inserted into the first and second main rod holes, respectively, and then fixed by snap rings mounted on the upper and lower ends of the first and second main rod holes. A main rod having a rectangular plate-shaped rotation piece extending in one direction after the upper piston and the lower piston are engaged to form a space;
A pair of air passages for filling a space between the upper piston and the lower piston except for a 180-degree space in which the rotating piece of the main rod rotates, and a space for rotating the rotating piece from the first rotating nozzle and the second rotating nozzle, And a stopper having a stopper provided in the cylinder.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cylinder for up-and-down motion and rotational motion,

The present invention relates to a cylinder capable of vertically moving and rotating. More specifically, the present invention relates to a cylinder capable of vertically moving and rotating. More specifically, the present invention relates to a cylinder in which an injection molding machine The present invention relates to a cylinder capable of up-and-down motion and rotational motion, which is developed to enable a rod to perform a rotational motion together with a lifting / lowering motion so as to be selectively discharged.

Injection molding is a molding process in which synthetic resin is processed by molding, and a thermoplastic resin (thermoplastic resin) is heated and fluidized in a heated cylinder, inserted into a mold by an injection ram, and injected by a plunger.

In the conventional injection molding, a simple structure in which a mold and a nozzle are connected in a simple manner has been often used, but the structure of the injection molded product has been specialized and developed in accordance with the trend of miniaturization and sophistication.

In particular, in order to solve various problems such as expansion of each component due to heat when a high-temperature molten resin is supplied and damages of the parts or leakage of the resin to a path other than the nozzle due to the opening of the connection part, And a hot runner for heating the men's folder.

However, the structurally advanced injection mold apparatuses are complicated in the way in which the resin passes through various combinations of various components when the color of the supplied resin is changed and supplied in order to produce products having various colors by one mold. The residual resin is removed by passing the resin of the changed color through the amount ranging from several tons to tens of tons in order to completely discharge the resin. However, this is a waste of a large amount of resin, And so on.

In order to inject different colors from the same injection mold after injection of one color, the resin supply and cutoff operation by vertical reciprocating motion is selectively performed so as to selectively supply and discharge the resin in the injection mold apparatus having two resin supply paths It is necessary to develop a cylinder capable of selectively supplying the resin according to the rotation of the rod.

The reason for this is proposed in the Korean Patent Registration No. 10-1433050-0000 (Aug. 18, 2014) 'cylinder for color change of hot runner injection mold apparatus', which has a structure capable of up-down movement and rotation movement .

However, since the piston has a structure in which the whole piston moves up and down, a high pressure air is required to receive a large load when rotating by air, and the operation time required for rotation has to be long.

(Patent Document 1) Korean Patent Registration No. 10-0918509-0000 (September 15, 2009) (Patent Document 2) Korean Patent Registration No. 10-1160524-0000 (June 21, 2012) (Patent Document 3) Korean Utility Model Registration No. 20-0462549-0000 (September 10, 2012) (Patent Document 4) Korean Patent Registration No. 10-1278163-0000 (June 18, 2013) (Patent Document 5) Korean Patent Registration No. 10-1433050-0000 (Aug. 18, 2014)

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a hot runner injection mold which is capable of selectively supplying and discharging one of two kinds of resin by forming two resin supply paths in an injection mold apparatus Developed a cylinder capable of up and down movement to prevent movement of resin in the device and 180 ° rotation movement to selectively move one of the two kinds of resin, .

According to an aspect of the present invention, there is provided a fuel cell system including a first rod hole formed at the center of an upper surface thereof, a piston hole having an inner diameter expanded to a lower portion thereof and extending to a lower end thereof, A pair of upward and downward air nozzles fixedly mounted on the lower end of the piston hole and fixed to the lower end of the piston hole and penetrating the inner diameter surface of the outer diameter surface of the piston hole to blow air to the upper and lower ends of the piston hole, A cylinder body having a first rotary nozzle for spraying air in a tangential direction to an inner surface of the nozzle and a second rotary nozzle for spraying air in a tangential direction opposite to the first rotary nozzle;

The upper portion is formed in a disk shape extending through the first rod hole and the lower end of which has an outer diameter stepwise. The first seal ring is attached to the groove recessed along the outer diameter surface to closely contact the inner diameter surface of the piston hole. An upper piston in which a first main rod hole is formed;

The lower part is formed in a circular plate shape passing through the second rod hole and having an upper end with a stepped outer diameter. The second sealing part is attached to the groove recessed along the outer diameter surface and is closely attached to the inner diameter surface of the piston hole. A lower piston in which a second main rod hole is formed;

The upper and lower portions of the upper piston and the lower piston are inserted into the first and second main rod holes, respectively, and then fixed by snap rings mounted on the upper and lower ends of the first and second main rod holes. A main rod having a rectangular plate-shaped rotation piece extending in one direction after the upper piston and the lower piston are engaged to form a space;

A pair of air passages for filling a space between the upper piston and the lower piston except for a 180-degree space in which the rotating piece of the main rod rotates, and a space for rotating the rotating piece from the first rotating nozzle and the second rotating nozzle, And a stopper including a stopper.

The lower piston is inserted through a pair of fixing bolts and penetrates through the through hole, which is further formed in the stopper, and is fixed to the screw hole formed in the upper piston.

In addition, a groove connecting the upper surface, the bottom surface and the side surface of the rotary piece is formed, and the inner surface of the piston hole closely contacting the rotary piece by the third sealing of the 'C' shape closely contacts the bottom surface of the upper piston and the upper surface of the lower piece. And is configured to be hermetically closed.

In addition, a 'U' -shaped air resistance groove is further formed on the surface of the rotating piece, which is received by the air injected from the first rotary nozzle and the second rotary nozzle, in the direction of the main rod.

As described above, according to the present invention, a rod having a rotating piece is mounted between an upper piston and a lower piston, and when the lifting and lowering is carried out, only the rod having the rotating piece is rotated. The load generated by the rotation is reduced and the pressure of the compressed air necessary for the rotation can be operated with a smaller pressure.

Figure 1 is a perspective view of an embodiment of the present invention.
2 is an exploded perspective view according to an embodiment of the present invention.
FIG. 3 is a side sectional view showing a cylinder lowering state according to an embodiment of the present invention. FIG.
FIG. 4 is a side cross-sectional view showing the lifting state of the cylinder according to the embodiment of the present invention. FIG.
Figure 5 is a cross-sectional view taken along line AA in accordance with an embodiment of the present invention.
6 is a cross-sectional view taken along the line AA in Fig. 6 illustrating the rotation state of the rod according to the embodiment of the present invention.
7 is a cross-sectional view showing an example applied to the injection mold apparatus of the present invention
8 to 9 are conceptual diagrams illustrating a process of selectively supplying resin according to the rotation of a cylinder, which is applied to the injection mold apparatus of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view according to an embodiment of the present invention, FIG. 3 is a side cross-sectional view illustrating a lowered state of a cylinder according to an embodiment of the present invention, FIG. 4 is a cross-sectional side view of a cylinder according to an embodiment of the present invention, FIG. 5 is an AA sectional view according to an embodiment of the present invention, FIG. 6 is a cross- The first rod hole 311 is formed at the center of the upper surface and the piston hole 312 is extended to the lower end of the lower portion of the piston hole 312. The second rod hole 313 is formed at the center of the piston hole 312, A lower cap 314 fixed to the lower end of the piston hole 312 and fixed to the lower end of the piston hole 312. The lower cap 314 penetrates the inner surface of the piston hole 312 from the outer surface of the piston hole 312, A pair of rising and falling air nozzles 315 A first rotary nozzle 316 for jetting air in a tangential direction to the inner surface of the pair of upward and downward air nozzles 315 and a second rotary nozzle 316 for blowing air in a tangential direction opposite to the first rotary nozzle 316, And a second rotary nozzle (317) for spraying the second rotary nozzle (317).

The upper portion is formed in a disk shape extending through the first rod hole 311 and the lower end of which has an outer diameter stepwise. The first seal ring 321 is mounted in a groove recessed along the outer diameter surface of the piston hole 312, An upper piston (32) which is in close contact with the surface and in which a first main rod hole (322) vertically penetrating from the center is formed;

The lower portion is formed in a circular plate shape passing through the second rod hole 313 and the upper end of which has an outer diameter stepwise. The second seal ring 331 is mounted in the groove recessed along the outer diameter surface of the piston hole 312, A lower piston (33) which is in close contact with the surface and in which a second main rod hole (332) vertically penetrating from the center is formed;

The upper and lower portions of the upper piston 32 and the lower piston 33 are inserted into the first and second main rod holes 322 and 332, respectively, 341 and an intermediate portion thereof is extended in a stepwise manner so that the upper piston 32 and the lower piston 33 are engaged with each other to form a space and then the rotary piece 342 having a rectangular plate shape extending in one direction A main rod (34) provided on the main body;

The space between the upper piston 32 and the lower piston 33 is filled with the first rotary nozzle 316 and the second rotary piston 33 so as to fill the space between the upper piston 32 and the lower piston 33 except for a space of 180 degrees in which the rotary piece 342 of the main rod 34 rotates, And a stopper (35) having a pair of air passages (351) connecting a space through which the rotating piece (342) rotates from the rotating nozzle (317) to a cylinder .

When the air is injected into the lower portion of the lower piston 33, the upper piston 32, the lower piston 33, the main rod 34, and the stopper 35 move up and down while acting as one piston. And has the same principle as a general air cylinder that descends when air is injected into the upper portion of the upper piston 32.

However, the rod is formed in a double structure so that the main rod 34 has a structure capable of rotating independently, and the stopper 35 is formed to be capable of limited reciprocating rotation of 180 degrees.

That is, when air is injected from any one of the first and second rotary nozzles 316 and 317, the rotary piece 342 rotates in opposite directions through the air passage 351, The load is less than that of the structure, and the rotational motion can be performed even with a small air pressure.

The upper piston 32 is formed with a through hole 352 which is inserted through the lower portion of the lower piston 33 by a pair of fixing bolts 333 and further formed in the stopper 35, It is preferable that the screw hole 323 is fixed.

It is preferable that the head of the fixing bolt 333 be inserted into the lower piston 33 so as not to interfere with the operation of the piston. In this embodiment, the upper piston 32, the lower piston 33, The stoppers 35 are brought into a mutually fixed state.

At this time, it is preferable to attach a seal to the inlet of the first and second main rod holes 322 and 332 in which the main rod 34 is inserted so as to increase the sealing effect at a portion in close contact with the main rod 34.

The stopper 35 is also arranged so as to surround a continuous path extending from the inner surface of the piston hole 312 to the bottom surface of the upper piston 32 to the outer surface of the main rod 34 and to the upper surface of the lower piston 33 It is preferable that sealing is mounted so that air is sprayed from any one of the first and second rotary nozzles 316 and 317 so as not to affect the other space.

A groove for connecting the upper surface of the rotary piece 342 to the bottom surface and the side surface of the rotary piece 342 is formed and the inner diameter surface of the piston hole 312 which is in close contact with the rotary piece 342 by the third seal 343 having a " The lower surface of the upper piston 32 and the upper surface of the lower piece 33 are tightly closed so as to prevent mutual influences of the two spaces defined by the rotary piece 342 from being mutually influenced Respectively.

In the preferred embodiment, when the rotating piece 342 is formed as a simple smooth surface, the rotating force of the air injected may be weak. However, in the present embodiment, the first rotating nozzle 316 and the second rotating nozzle Shaped air resistance groove 344 opened in the direction of the main rod 34 is additionally formed on the surface which is subjected to the force applied by the air injected from the air injection hole 317. [

In the above-described embodiment, when air is injected, the air is caused to collide with an obstacle on the opposite side of the opening so that the rotational force of the injected air can be added.

FIG. 7 is a cross-sectional view showing an example applied to the injection mold apparatus of the present invention. FIGS. 8 to 9 are conceptual views illustrating a process of selectively supplying resin according to the rotation of a cylinder as applied to the injection mold apparatus of the present invention, The cylinder 3 of the present invention is applied to a nozzle locator 2 for selectively supplying two types of resin from a manifold 1 having a conduit through which two resins move, There is shown an example in which the present invention is applied to an injection mold apparatus for controlling the nozzle 4 for selectively discharging two types of resin to move the nozzle pin 21 up and down and rotate.

At this time, the cylinder body 31 is provided with a fixing bracket 36 for fixing to the bottom surface of the manifold 1 on which the nozzle locator 2 is mounted, so that the cylinder body 31 can be easily mounted.

As shown in the drawing, when the nozzle pin 21 is lifted by the cylinder 3, the inlet is closed by blocking the inlet before branching, and the resin can be moved when the nozzle pin 21 descends.

At this time, since the resin has a structure in which the path of the resin is changed according to the rotation of the nozzle pin 21 so that two resins can be selectively supplied and discharged, when the main rod 34 rotates 180 degrees, another resin is supplied It is possible to constitute a hot runner injection mold apparatus capable of effectively supplying two types of resin.

1: Men's folder
2: Nozzle Locate
21: Nozzle pin
3: Cylinder
31: cylinder body
311: first rod hole 312: piston hole
313: second rod hole 314: bottom cap
315: raising and lowering air nozzle 316: first rotary nozzle
317: Second rotary nozzle
32: Upper piston
321: first seal ring 322: first main rod hole
323: Screw hole
33: Lower piston
331: second sealing 332: second main rod hole
333: Fixing bolt
34: Main load
341: snap ring 342:
343: third sealing 344: air resistance groove
35: Stopper
351: air passage 352: through hole
36: Fixed bracket
4: Nozzle

Claims (4)

The first rod hole 311 is formed at the center of the upper surface and the piston hole 312 extending to the lower end of the piston hole 312 is formed at a lower portion of the first rod hole 311. A second rod hole 313 is formed at the center of the piston hole 312, A pair of upward and downward air flow passages 314 which are inserted and fixed to the lower end of the piston hole 312 and penetrate the inner surface of the outer diameter surface of the piston hole 312 and inject air into the upper and lower ends of the piston hole 312, A first rotary nozzle 316 for jetting air in a tangential direction to the inner diameter surface is provided between the nozzle 315 and the pair of rising and falling air nozzles 315, A cylinder body 31 having a second rotary nozzle 317 for spraying air in the direction of the second rotary nozzle 317;
The upper portion is formed in a disk shape extending through the first rod hole 311 and the lower end of which has an outer diameter stepwise. The first seal ring 321 is mounted in a groove recessed along the outer diameter surface of the piston hole 312, An upper piston (32) which is in close contact with the surface and in which a first main rod hole (322) vertically penetrating from the center is formed;
The lower portion is formed in a circular plate shape passing through the second rod hole 313 and the upper end of which has an outer diameter stepwise. The second seal ring 331 is mounted in the groove recessed along the outer diameter surface of the piston hole 312, A lower piston (33) which is in close contact with the surface and in which a second main rod hole (332) vertically penetrating from the center is formed;
The upper and lower portions of the upper piston 32 and the lower piston 33 are inserted into the first and second main rod holes 322 and 332, respectively, 341 and an intermediate portion thereof is extended in a stepwise manner so that the upper piston 32 and the lower piston 33 are engaged with each other to form a space and then the rotary piece 342 having a rectangular plate shape extending in one direction A main rod (34) provided on the main body;
The space between the upper piston 32 and the lower piston 33 is filled with the first rotary nozzle 316 and the second rotary piston 33 so as to fill the space between the upper piston 32 and the lower piston 33 except for a space of 180 degrees in which the rotary piece 342 of the main rod 34 rotates, And a stopper (35) having a pair of air passages (351) connecting a space through which the rotary piece (342) rotates from the rotary nozzle (317).
The upper piston (32) according to claim 1, further comprising a through hole (352) inserted through the lower portion of the lower piston (33) by a pair of fixing bolts (333) and further formed in the stopper (35) And a screw hole (323) formed in the cylinder (321).
The piston according to claim 1, wherein a groove connecting the upper surface, the bottom surface, and the side surface of the rotary piece (342) is formed and the piston hole (342) is in close contact with the rotary piece (342) 312), the bottom surface of the upper piston (32), and the upper surface of the lower piece (33) are tightly closed to each other.
The method as claimed in claim 1, wherein a surface of the rotating piece (342) which is subjected to the force of air injected from the first rotating nozzle (316) and the second rotating nozzle (317) Shaped air resistance groove (344) is additionally formed on the upper surface of the cylinder.

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