KR20130022199A - A vacuum chamber device of injection molding press - Google Patents

Abstract

PURPOSE: A vacuum chamber device of a forming device is provided to maintain a vacuum state more stably, thereby improving a forming condition of a product and maximizing generality. CONSTITUTION: A vacuum chamber device(100) of a forming device comprises a fastening ring(10), a first chamber(20), a second chamber fixing ring(40), and a second chamber(30). The fastening ring includes a packing groove receiving a packing which is closely adhered to the outer periphery of a fixed ram(150). The first chamber includes a ram hole, a fastening groove where projections of the fastening ring are joined, a scrap groove receiving foreign materials or scraping oil, and a stopper preventing the separation of a second chamber. The second chamber fixing ring is closely adhered to the outer periphery of the first chamber, includes stopping projections hung on the stopper, and is joined to the second chamber with a fastening bolt. The second chamber is fastened to the second chamber fixing ring and includes a packing groove, thereby preventing the separation of the first chamber and preventing the inflow of air to the inside of the second chamber.

Description

Vacuum chamber device of molding machine {A VACUUM CHAMBER DEVICE OF INJECTION MOLDING PRESS}

The present invention relates to an injection molding machine for forming a product of a predetermined shape by injection molding an article using a rubber or a synthetic resin material, and in particular, sealing of a vacuum chamber mounted in the injection molding machine to perform an injection operation in a vacuum state. (密閉) The present invention relates to a vacuum chamber device of a molding machine that can improve the molding conditions of the product by maximizing the structure by improving the structure and maintaining a more stable vacuum state.

Injection molding machine for forming rubber, synthetic resin material, etc. into a predetermined shape product has been developed a variety of technologies and these devices are molded by injecting the raw material into the molding hole formed between the upper mold and the lower mold.

In the case of pressurizing in the air, the external air flows into the mold and bubbles are formed in the molded article, which causes a lot of defects and improves these problems. Vacuum chambers for separating and discharging odors and harmful gases generated in the work have been installed and used as essential components.

Such a vacuum chamber is typically mounted and installed on the upper mold outer circumference and its operation is performed by a separate drive cylinder.

In other words, the upper and lower molds are brought into close contact with the outside and the chamber is moved to the outside, and the internal air is extracted to the outside by a vacuum pump together with the injection work to supply the raw materials to the molding holes of the upper and lower molds. By performing the operation while maintaining the inside of the chamber in a vacuum state, it is possible to eliminate the unmolded portion of the product generated by the air remaining in the mold and to minimize the defective rate of the injection molded product due to the bubble.

However, the vacuum chamber in such a configuration has a limitation in the injection capacity of the injection molding machine because the structure is made of a single body.

In order to improve such a problem, it is difficult to increase the overall height of the injection molding machine because the operating distance of the upper and lower molds to be exchanged and installed in the limited range and the vacuum chamber to improve the molding conditions must be secured.

In addition, even if the vacuum chamber is manufactured in accordance with the maximum mold height, if the space to be vacuumed is large, the efficiency of vacuum operation is reduced, and the working speed becomes slow, and eventually, a large number of injection molding machines of appropriate size are provided to solve the work speed problem. By doing so, a problem arises in that the burden on the user is increased.

In Korean Utility Model Registration No. 20-0356254 for improving such a problem, the upper and lower frames support the upper and lower frames, and the upper mold is mounted on the upper frame, and the first chamber is sealed while surrounding the upper mold.

In addition, the first chamber was configured to seal the second chamber by using a packing member, so that the first and second chambers were movable with the cylinder rod mounted on the upper frame.

In this prior art, with the problem that the first and second chambers must be interlocked with the respective cylinder rods, the sealing structure between the upper mold and the first and second chambers is extremely weak, making it difficult to maintain a vacuum in the chamber during operation and also easily breakdown. The problem caused by the inflow of external air has not been improved.

Recognizing this problem, the inventor has proposed Utility Model Registration No. 20-0169062, in which the vacuum chamber is composed of two stages but the first and second chambers are linked by one cylinder rod.

Such a prior art has a feature that is easy to operate by interlocking with one cylinder rod, while the above-described prior art does not improve the sealing structure between the upper mold and the first and second chambers, and thus, due to a large number of movements. It could not be effectively prepared for deterioration due to wear and packing of the packing member.

Therefore, the prior art has a problem that the sealing function of the vacuum chamber is lowered, so that it is difficult to maintain an effective vacuum state and also easily cause a failure.

The present invention is made up of the first and second chambers in view of the above-described prior art, and a circular ring fastening ring equipped with a seal for sealing and sealing with a circular fixing ram mounted under the upper frame of the molding machine;

A stopper configured to form a plurality of sealed packings and foreign matter storage and oil scrap grooves on the lower outer peripheral surface of the first chamber, wherein the first chamber comprises a quadrangular body through which a ram hole in which a circular fixing ram is attached and the fixed ring is fastened;

A second chamber fixing ring fastened to the stopper upper end of the first chamber and engaged with a stopper protruding from the lower portion of the first chamber, and a second chamber fastened to the second chamber fixing ring,

The second chamber has an outwardly protruding fastening plate to which the guide rod into which the guide rod is inserted and the interlocking rod of the cylinder for interlocking the chamber are fastened;

In addition, the stopper and the packing for controlling the first chamber are composed of fixed rams to improve the sealing function between the first and second chambers, and easy to disassemble and assemble, so that the replacement is simple and the operation of the vertical movement is performed smoothly. In addition, it is possible to provide a vacuum chamber apparatus for a molding machine for the purpose of a chamber structure which effectively improves the sealing function and works effectively for vacuum molding.

The present invention as a means for solving the above problems, the upper and lower frames (110, 120) are mounted on the guide rod 130, the guide rod 130 is moved by the interlocking of the main cylinder 140 and the pressure cylinder 141 and the To configure the vacuum chamber device 100 of the molding machine constituting a chamber interlocked with the chamber cylinder 142 to the outside of the fixed ram 150 fixed to the upper frame 110,

The packing 50 is tightly fitted to the outer circumferential surface of the fixing ram 150 and fastened to the outer circumferential surface of the fixing ram 150 together with the first chamber 20 and the fastening bolt 11 of the quadrangular body. ) Is a circular ring having a circular groove having a packing groove 13 is received, and the projection jaw 14 is fastened to the fastening groove 22 formed on the inner circumferential surface of the ram hole 21 drilled on the upper surface of the first chamber 20 (10). ),

The first chamber of the circular ram hole 21 to which the fixing ram 150 is bonded and constitutes a fastening groove 22 to which the protruding jaw 14 of the fastening ring 10 is coupled to the inner circumferential surface of the ram hole 21. It consists of a (20), the outwardly protruding outward on the outer peripheral surface of the packing groove 13 is inserted into the top and bottom of the packing groove 13 and the packing groove 13 between the second chamber 30 and the close movement of the foreign matter The first chamber 20 consisting of a stopper 24 for protruding to a predetermined height so that the scrap groove 23 for receiving or scrapping the oil is configured to control the separation of the second chamber 30 and

The stopper 41 is in close contact with the outer circumferential surface of the first chamber 20 and is engaged with the stopper 24, and the fastening hole 12 is drilled on the upper surface to the fastening bolt 11 in the second chamber 30. Second chamber fixing ring 40 of the rectangular body to be fastened,

The guide bar to which the upper and lower frames 110 and 120 are mounted by integrally configuring the fastening plate 31 fastened so that the stop protrusion 41 of the second chamber fixing ring 40 is positioned inward and outwardly to both sides of the lower part. A second chamber 30 forming a coupling hole 32 engaged with the guide hole 131 into which the 130 is inserted and the interlocking rod 143 of the chamber cylinder 142 mounted on the upper frame 110;

In addition, a stop protrusion 33 protruding inwardly and a packing groove 34 accommodating the packing 50 into the stop protrusion 33 are formed at the lower end of the second chamber 30, thereby leaving the first chamber 20. It is formed to close the air frame into the chamber in close contact with the lower frame 120 together with the prevention, thereby improving the vacuum function, thereby reducing the defective rate of the moldings and at the same time improving the formability, workability and manufacturing. It is to provide a vacuum chamber device of.

The present invention is fastened to the fixing ram 150 is configured in the upper frame 110, but fixed to the fastening ring (10) of the circular body in which the packing 50 for sealing and sealing with the fixing ram 150 is received. In addition, the sealing groove 23 is formed to increase the sealing property and the sealing property with the first chamber 20 and to increase the sealing property, and to receive the foreign matter or the oil scrap according to the packing 50 and the close movement on the outer circumferential surface thereof. Composed of the first chamber 20 made of a stopper 24 to be moved to the second chamber 30 and the effect of collecting the foreign matter, and in close contact with the outer peripheral surface of the first chamber 20 and the stopper 24 Fastening of the second chamber 30 fixed with the second chamber fixing ring 40 constituting the stop protrusion 41 engaged with the second protrusion 30;

In addition, a stop protrusion 33 protruding inwardly and a packing groove 34 accommodating the packing 50 into the stop protrusion 33 are formed at the lower end of the second chamber 30, thereby leaving the first chamber 20. In order to prevent the inflow of air into the chamber in close contact with the lower frame 120 together with the prevention, it is possible to improve the vacuum function to reduce the defective rate of the molded products, and to improve the formability, workability and manufacturing of the molding machine. It is to provide a vacuum chamber device.

1 is an exploded perspective view showing a double chamber configuration of the present invention.
Figure 2 is an operation diagram of the vacuum chamber of the molding machine to which the double chamber of the present invention is applied.
Figure 3 is an explanatory view showing the occlusal state of the present invention dual chamber.
Figure 4 (a) is an enlarged view showing a close contact with the fixing ram of the present invention and the separation prevention structure of the first chamber.
(b) is an enlarged view showing a close contact structure and a transfer structure between the first and second chambers of the present invention.

Referring to the drawings the present invention will be described in detail for carrying out the invention.

According to the present invention, the upper and lower frames 110 and 120 are mounted on the guide rod 130 and moved up and down along the guide rod 130 by interlocking the main cylinder 140 and the pressure cylinder 141 and the upper frame 110. The lower end is configured with a cylindrical fixing ram 150, the fixing ram 150 is composed of one or two vacuum chamber is configured to move up and down by the chamber cylinder 142 mounted to the upper frame 110 In the vacuum chamber device 100 of,

The present invention, as shown in Figures 1 and 2 and 4 is fastened to be fitted in close contact with the outer peripheral surface of the fixing ram 150 and fastening to the first chamber 20 and the fastening bolt 11 of the rectangular body to the bottom. A plurality of balls 12 are formed, and an inner circumferential surface thereof is provided with a packing groove 13 in which a packing 50 for tightly contacting and sealing the outer circumferential surface of the fixing ram 150 and an upper surface of the first chamber 20 are opened. Fastening ring 10 of a circular body having a protruding jaw 14 is fastened to the fastening groove 22 formed on the inner circumferential surface of the ram hole 21,

The first chamber of the circular ram hole 21 to which the fixing ram 150 is bonded and constitutes a fastening groove 22 to which the protruding jaw 14 of the fastening ring 10 is coupled to the inner circumferential surface of the ram hole 21. Receiving foreign matter or oil due to close contact with the second chamber 30 between the packing groove 13 and the packing groove 13, which is projected outward on the outer peripheral surface of the lower side of the 20 and the packing 50 is inserted up and down The first chamber 20 consisting of a stopper 24 for controlling the separation of the second chamber 30 by projecting to a predetermined height so that the scrap groove 23 for scraping the structure and

The stopper 41 is in close contact with the outer circumferential surface of the first chamber 20 and is engaged with the stopper 24, and the fastening hole 12 is drilled on the upper surface to the fastening bolt 11 in the second chamber 30. Second chamber fixing ring 40 of the rectangular body to be fastened,

The guide bar to which the upper and lower frames 110 and 120 are mounted by integrally configuring the fastening plate 31 fastened so that the stop protrusion 41 of the second chamber fixing ring 40 is positioned inward and outwardly to both sides of the lower part. Consisting of the second chamber 30 to form a fastening hole 32 is fastened to the guide hole 131 is inserted and the interlocking rod 143 of the chamber cylinder 142 mounted on the upper frame 110. do.

In addition, a stop protrusion 33 protruding inwardly and a packing groove 34 accommodating the packing 50 into the stop protrusion 33 are formed at the lower end of the second chamber 30, thereby leaving the first chamber 20. It is configured to block the inflow of air into the chamber in close contact with the lower frame 120 with the prevention.

The present invention is simple in configuration and without failure, the sealing function is improved and prevents the degradation of the sealing function even in many up and down movements, it is easy to maintain the vacuum during molding and the operation can be made quickly and stable molding operation can be made .

Reference numeral 151 denotes a stop ring protruding from the fixed ram to control the first chamber, and 200 denotes a vertical mold.

Referring to the accompanying drawings of the present invention configured as described above in more detail the operating state of the preferred embodiment as follows.

The present invention, as in the vacuum chamber device 100 of the known molding machine, the upper and lower frames 110 and 120 are mounted on the guide rods 130 to guide rods by interlocking the main cylinder 140 and the pressure cylinder 141. 130 is moved up and down along the upper frame 110 and the cylindrical fixed ram 150 and the lower mold 200 is fastened to the lower frame 120 is mounted on the lower end of the present invention in the coupled state of the present invention In the state where the first and second chambers 20 and 30 are lowered and in close contact with the lower frame 120, the air in the first and second chambers 20 and 30 is discharged by a pump (not shown) to vacuum the inside of the chamber. To be

That is, as shown in FIG. 2, when the upper frame 200 is raised by operating the main cylinder 140 while the upper and lower molds 200 are fastened, the lower mold 200 is fixed to the upper mold 200 in a fixed state. When the pressure cylinder 141 and the chamber cylinder 142 operating in conjunction with the upper frame 110 is close to each other, the interlocking rod 143 and the interlocking rod 143 interlocking with the chamber cylinder 142 are operated. The second chamber 30 is lowered by lowering the fastening plate 31 outwardly of the second chamber 30 fastened to the rod 143.

The stop chamber 41 of the second chamber fixing ring 40 and the second chamber fixing ring 40 which are fastened to the upper end of the second chamber 30 by the lowering of the second chamber 30 are in the moving position. While being engaged with the stopper 24 of the first chamber 20, the stopper 24 is pushed out to lower the integral second chamber 30 together and the lower frame 120 moved above by the movement. The mold 200 is pressed against the outer upper surface.

In this movement, the first chamber 20 is moved in a closed state by a fastening ring 10 in close contact with an outer circumferential surface of the fixed ram 150 and a plurality of packings 50 mounted on the fastening ring 10. The second chamber 30 adhered to the first chamber 20 is slidably moved in close contact with a stopper 24 formed on the outer circumferential surface of the first chamber 20 and a plurality of packings 50 formed on the stopper 24. The first chamber 20 and the second chamber 30 are moved in a closed state to seal the upper and lower molds 200.

That is, the fixing ram 150 and the first chamber 20 are in close contact with the fastening ring 10, and the first chamber 20 and the second chamber 30 are in close contact with the stopper 24. Each packing 50 provided in the ring 10 and the stopper 24 is in close contact with the outer circumferential surface of the fixing ram 150 and the first chamber 20 of the inner side and slides to block the inflow of air. The second chamber 30 and the lower frame 120 are to be in close contact with the packing 50 configured on the lower side of the stop projection 33 formed on the lower surface of the second chamber 30.

Accordingly, the first chamber 20 and the second chamber 30 are maintained in a completely sealed state, and in this sealed state, a vacuum pump is operated to operate the first chamber 20 and the second chamber 30. Since the air inside is forcibly evacuated, it is maintained in a vacuum state and the main cylinder 140 provided in the lower part of the molding machine is raised again to raise the lower mold 200 mounted on the lower frame 120 to engage the upper mold 200. The molding is molded by finally injecting the resin to be molded by the resin supply means into the molding hole in the upper and lower molds 200 in this state.

When the resin injected by the above is molded, the air is injected into the first and second chambers 20 and 30 to release the vacuum state and then the interlocking rod 143 to the lowered chamber cylinder 142. When rising, the second chamber 30 fastened to the interlocking rod 143 is transferred to the upper portion, and the stop protrusion 33 composed of the protrusions inwardly moved from the lower surface of the second chamber 30 moves together while moving. The first chamber 20 moves upward by closely moving the stopper 24 together while being in close contact with the stopper 24 of the first chamber 20 at the position.

2, the upper frame 110 and the lower frame 120 to which the upper and lower molds 200 are fastened are lowered again by the operation of the pressure cylinder 141 and the main cylinder 140 to be returned to their original positions. Accordingly, in the state in which the upper and lower molds 200 are separated, the moldings formed in the molding holes of the lower molds 200 are removed, and the above-described operation is repeatedly repeated.

The present invention is to seal the fixing ram 150 and the first chamber 20 and the first chamber 20 and the second chamber 30 in close contact with a plurality of packings 50, the fastening ring 10 In addition to increasing the sealability of the structure of the packing 50, the fastening property with the first chamber 20 is increased, and the second chamber 30 and the first chamber 20 are formed in the first chamber 20. Sealing by the packing 50 mounted on the stopper 24 and the configuration of simply moving the second chamber 30 by the movement of the stopper 24 are easy to design, simple to manufacture and can increase the sealing effect. In addition, the configuration is simple and there is no failure, and the sealing function is improved. In addition, many Shanghai dongs prevent the deterioration of the sealing function, and the vacuum can be easily maintained during the molding, and the operation is quick, so that the molding work can be performed quickly and stably.

10: fastening ring 11: fastening bolt 12: fastening hole
13 packing groove 14 protruding jaw 20 first chamber
21: ram ball 22: fastening groove 23: scrap groove
24: stopper 30: second chamber 31: fastening plate
32: fastening hole 33,41: stop protrusion 34: packing groove
40: second chamber fixing ring 50: packing 100: vacuum chamber device
110: upper frame 120: lower frame 130: guide rod
131: guide hole 140: the main cylinder 141: pressure cylinder
142: chamber cylinder 143: interlocking rod 150: fixed ram

Claims (1)

The upper and lower frames 110 and 120 are mounted on the guide rods 130 so that the guide rods 130 are moved by the interlocking of the main cylinder 140 and the pressure cylinder 141, and the fixed ram fixed to the upper frame 110 ( In the vacuum chamber device 100 of the molding machine constituting a chamber that interlocks with the chamber cylinder 142 to the outside of 150,

The packing for tightly fitting to the outer circumferential surface of the fixing ram 150 and fastening to the outer circumferential surface of the fixing ram 150 together with fastening with the first chamber 20 and the fastening bolt 11 of the rectangular body to the bottom ( Fastening ring of a circular body having a packing groove 13, which is received 50, and a protruding jaw 14 that is fastened to the fastening groove 22 formed on the inner circumferential surface of the ram hole 21 drilled on the upper surface of the first chamber 20 ( 10),

The first chamber of the circular ram hole 21 to which the fixing ram 150 is bonded and constitutes a fastening groove 22 to which the protruding jaw 14 of the fastening ring 10 is coupled to the inner circumferential surface of the ram hole 21. It consists of a (20), the outwardly protruding outward on the outer peripheral surface of the packing groove 13 is inserted into the top and bottom of the packing groove 13 and the packing groove 13 between the second chamber 30 and the close movement of the foreign matter The first chamber 20 consisting of a stopper 24 for protruding to a predetermined height so that the scrap groove 23 for receiving or scrapping the oil is configured to control the separation of the second chamber 30 and

The stopper 41 is in close contact with the outer circumferential surface of the first chamber 20 and is engaged with the stopper 24, and the fastening hole 12 is drilled on the upper surface to the fastening bolt 11 in the second chamber 30. Second chamber fixing ring 40 of the rectangular body to be fastened,

The guide bar to which the upper and lower frames 110 and 120 are mounted by integrally configuring the fastening plate 31 fastened so that the stop protrusion 41 of the second chamber fixing ring 40 is positioned inward and outwardly to both sides of the lower part. A second chamber 30 forming a coupling hole 32 engaged with the guide hole 131 into which the 130 is inserted and the interlocking rod 143 of the chamber cylinder 142 mounted on the upper frame 110;

In addition, a stop protrusion 33 protruding inwardly and a packing groove 34 accommodating the packing 50 into the stop protrusion 33 are formed at the lower end of the second chamber 30, thereby leaving the first chamber 20. Vacuum chamber device of the molding machine characterized in that configured to block the inflow of air into the chamber in close contact with the lower frame (120).

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