KR20010083730A - Air exhauster of injection molder, extruding machine - Google Patents

Abstract

PURPOSE: An apparatus for discharging air and moisture and feeding a certain amount of raw material in a synthetic resin forming machine is provided to produce standardized high quality products and obtain effects of operation productivity and raw material reduction accordingly by separating a resin raw material from wet air so that uniformed raw material is fed. CONSTITUTION: The apparatus comprises a first discharging part discharging the air inside a suction chamber through a first discharging pipe (41) by installing the suction chamber having the first discharging pipe (41) and a feeding hole in the outlet side of a mixing can transferring a resin raw material fed from a hopper (7) in the heated and softened state, and connecting the first discharging pipe (41) with a vacuum motor (5); a control part which is installed inside the suction chamber of the first discharging part, and at which a pneumatic cylinder (31) having an opening and closing rod is installed so that the outlet of the mixing can is opened or closed by the sensing of a capacity sensing sensor (32); and a second discharging part which is formed at the rear end of a transfer screw (81) transferring the resin raw material passing through the suction chamber, and discharges the internal air to the outside through a second discharging pipe connected to the vacuum motor (5).

Description

Air Humidity Discharge and Constant Raw Material Supply Device of Synthetic Resin Molding Machine {AIR EXHAUSTER OF INJECTION MOLDER, EXTRUDING MACHINE}

The present invention relates to an air humidifier discharge and a constant raw material supply device of a synthetic resin molding machine, and more particularly, to an extruder, an air humidifier discharge and a constant raw material supply device having a first and second suction part and a control unit between the mixing cylinder and the transfer screw. Forming and separating water support fee and wet air to ensure uniform supply of raw materials and production of standardized high-quality products, as well as air humidifier discharge and schedule of synthetic resin molding machine that can expect work productivity, consumption residue reduction and raw material reduction effect. To provide a raw material supply device.

In general, a molding machine for molding a film, a sheet, a foamed product, and other injection molding products using a thermosetting thermoplastic resin is classified according to a molding method, and injection molding machines and extruders are generally used.

The extruder 100 and the injection machine 200 are the same until mixing the raw materials and various additive materials supplied from the hoppers 110 and 210 in the mixing cylinders 110 and 220, but thereafter, the injection ram 230 as shown in FIG. 1A. Injecting into the mold into the mold and press-fitting into the flanger is an injection machine 200, and as shown in Fig. 1b to extrude through the extrusion die 130 is called an extruder (100).

Here, the water support material supplied through the hoppers 110 and 210 as described above is heated and softened in the mixing cylinders 120 and 220 and fluidized by a screw or the like and sent to a mold or an extrusion die.

However, the conventional synthetic resin molding machine having a structure that is supplied through the hopper (110, 210) as described above is that when the raw material is supplied, air containing moisture is supplied to the mixing cylinder (120, 220) together,

Since the moist air is present in the molding machine together with the raw materials to be mixed and conveyed, it acts as a factor in uneven supply of the supporting material, such as acting as a load on a screw, which is a conveying means, thereby causing a pin hole in the product. As it is formed or the transparency of the product is lowered and the defective rate is increased by that, as a result, there is a problem in that unnecessary power loss due to overload and raw materials are wasted with deterioration of work productivity.

Therefore, the present invention was devised to solve the general problems caused during material supply in the above-described conventional synthetic resin molding machine,

An object of the present invention is to separate the water support fee and the wet air by the air humidifier discharge and a constant raw material supply device to achieve a uniform raw material supply, can be expected to produce a standardized high-quality product production and work productivity and raw material reduction effect The present invention provides a device for removing water from a synthetic resin molding machine.

As a specific means of the present invention for achieving the above object;

At the outlet side of the mixing vessel which transfers the water support material supplied from the hopper in a heated and softened state, a suction chamber having a primary discharge pipe and a supply port is installed, and the primary discharge pipe is connected to a vacuum motor and sucked through the primary discharge pipe. A primary discharge part for discharging air inside the room;

An adjustment unit installed in the suction chamber of the primary suction unit and having a pneumatic cylinder having an opening / closing rod to open and close the outlet of the mixing cylinder by sensing a capacity detecting sensor;

It is formed at the rear of the conveying screw for conveying the water support material passed through the suction chamber, the air humidifier discharge and constant raw material supply device of the synthetic resin molding machine consisting of a secondary discharge unit for discharging the internal air to the outside through the secondary discharge pipe connected to the vacuum motor It is achieved by having.

1 a, b is a configuration diagram of a conventional synthetic resin molding machine (extruder, injection machine)

Figure 2 is a perspective view showing the air moisture discharge and the constant raw material supply device of the synthetic resin molding machine according to the present invention

Figure 3 is a cross-sectional view of the air humidifier and constant raw material supply apparatus according to the present invention

Figure 4 is an operational state diagram of the air humidifier and constant raw material supply apparatus according to the present invention

<Explanation of symbols in major parts of drawing>

1: air moisture discharge and constant raw material supply device 2: primary discharge unit 3: control unit

4 secondary discharge part 5 vacuum motor 6 mixing cylinder

7: Hopper 8: Extrusion die 9: Water support fee

21: suction chamber 31: pneumatic cylinder 32: capacity detection sensor

33: piston 34: opening and closing rod 41: primary discharge pipe

61 screw 62 outlet 81 feed screw

82: Case H, H ': 1st and 2nd discharge hole

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

2 is a perspective view showing the air moisture discharge and the constant raw material supply apparatus of the synthetic resin molding machine according to the present invention, Figure 3 is a cross-sectional view of the air moisture discharge and constant raw material supply apparatus according to the present invention, Figure 4 is the air according to the present invention This is a state diagram of the operation of moisture discharge and constant feeder.

<Example>

An embodiment in which the water removing device according to the present invention is applied to an extruder, which is an example of a synthetic resin molding machine, is installed at the outlet side of the mixing barrel 6 for heating, softening and moving the water support material 9 supplied from the hopper 7. Adjusting the primary outlet (2) and the opening and closing rod 34 is installed in the suction chamber 21 of the primary outlet (2) to adjust the amount of raw material supply and horizontally operated by the pneumatic cylinder (31) It consists of the secondary part 4 and the secondary discharge part 4 which is installed in the rear of the conveying screw 81 which moves the water support material which passed through the suction chamber 31 to the extrusion die 8, and performs a secondary discharge action.

Here, in the mixing barrel 6, the powder (PODER) or chip-shaped water support material supplied from the hopper 7 like the conventional extruder is transferred by the screw 61, heated, softened to make a dough state,

As the outlet 62 of the mixing cylinder 6, a suction chamber 21 having a rectangular shape of a sealed structure is installed as shown in FIG. 3.

At this time, the suction chamber 21 forms a primary discharge hole (H) in communication with the outside to the upper side as shown in Figures 2 to 3 to the primary discharge pipe 211 connected to the external vacuum motor (5). In the center, the above-described adjusting part 3 is installed, and the lower part communicates with the upper end of the conveying screw 81 of the extrusion die 8 to supply the water support material 9 to the extrusion die 8. Supply port 212 is installed is formed.

In addition, the adjuster 3 is a pneumatic cylinder 31 is connected to the external pneumatic line opening and closing rod 34 taking a cylindrical body to open and close the outlet 62 of the above-described mixing cylinder 6 as shown in FIG. It is configured to perform horizontal operation by

In this way, the pneumatic cylinder 31, in which the opening and closing rod 34 is connected to the piston, has a capacity detecting sensor installed at a connection portion between the outlet 62 of the mixing cylinder 6 and the suction chamber 21 as shown in FIG. 32, which is operated by an electrical signal, and the capacitive sensor 32 detects the supply amount of the water support fee 9 supplied from the mixing vessel 6 and supplies the oversupply (capacity higher than the outlet of the mixing vessel). Will be prevented).

Here, the opening and closing bar 34 is in close contact with the outer circumference of the outlet of the mixing cylinder 6, as shown in FIG. It is preferable to configure in the form of ".

On the other hand, the secondary discharge portion is located at the rear side of the transfer screw 81 of the extrusion die 8 connected to the supply port 212 of the suction chamber 21 described above, a cylindrical case in which the transfer screw 81 is built-in It is configured by connecting the secondary discharge pipe (H ') connected to the external vacuum motor (5) described above by forming a secondary suction hole (H') on the upper, lower, left, right.

As such, the secondary discharge part 4 is positioned at the rear side of the transfer screw 81 in the transfer screw 81, so that the air gap is formed on the rear side so that the air is removed through the secondary discharge pipe 41. It is easy to prevent water flowing into the secondary discharge pipe (41).

Thus, the air moisture discharge and the constant raw material supply device 1 of the present invention having the configuration as described above discharges the humid air in the atmosphere present in the mixing cylinder 6 and the extrusion die 8 to the outside, the mixing cylinder (6) separates the softened water support material (9) and the humid air and at the same time operates to maintain the vacuum inside the extruder,

As shown in FIG. 4, first, when the softened water support fee is supplied to the suction chamber 21 through the outlet 62 through the mixing cylinder 6, the air flowing into the suction chamber 21 together with the water support fee 9 is provided. Humid air is discharged to the outside of the suction chamber primarily through the primary discharge pipe (2) located on the upper side of the suction chamber (21),

Subsequently, when the water support fee 9 is supplied through the supply port 212 of the suction chamber 21, continuous discharge of the internal air through the secondary discharge pipe 41 constituted by the rear sides of the transfer screw 81. This is done.

At this time, the capacity detecting sensor 32 detects this in advance when the water support charge 9 supplied to the suction chamber 21 is oversupplied to have a stacking amount higher than that of the outlet 62 of the mixing cylinder 6. The detection value is sent to the pneumatic cylinder 31, and the piston 33 of the pneumatic cylinder 31 is expanded and operated by the electrical signal, and the opening and closing rod 34 connected to the piston 33 is mixed with the mixing cylinder 6 Since the outlet 62 is blocked, the further raw material supply is blocked.

When the raw material capacity in the suction chamber 21 is reduced according to the blocking of the raw material supply as described above, the capacity change sensor is sensed by the capacity detecting sensor 32 to perform the above-described opening and closing rod 34 operation in the reverse order. The supply of the raw material 9 is resumed, and it is possible to supply an appropriate amount of the water support charge 9 to the extrusion die 8 by repeating the opening and closing operation of the opening / closing rod 34 as described above, as well as in the suction chamber 21. It is possible to carry out the continuous primary discharge operation.

Accordingly, since the water support material 9 is extruded through the extrusion die 8 in a completely separated state from the wet air, it is possible to realize a standardized high-quality product production according to a uniform raw material supply.

In addition, the extrusion molding of the raw material supplied in the state excluding the humid air as described above can maintain the temperature of the water support material constant, and can prevent the overload of the transfer screw 81 and the like, thereby producing high-quality standardized products. Of course, it has a derivation effect that can improve work productivity.

On the other hand, the air humidifier and constant raw material supply device of the present invention described by applying the extruder as an embodiment as described above is to be installed between the mixing cylinder and the transfer screw of the injection machine as well as the extruder to obtain the same action, effect.

As described above, the air humidifier discharge and the constant raw material supply device of the synthetic resin molding machine according to the present invention constitutes the primary and secondary discharge portions between the mixing cylinder and the transfer screw is supplied with water support material to the air and moisture present in the molding machine 1 By discharging the water through the secondary, and separating the water support fee and the wet air in a state in which only a proper amount of water support fee is supplied by the control unit, the raw material can be supplied uniformly, producing a standardized high-quality product and Work productivity, power consumption reduction and raw material reduction effect can be obtained, it is a very useful invention for producers.

Claims (2)

At the outlet side of the mixing vessel which transfers the water support material supplied from the hopper in a heated and softened state, a suction chamber having a primary discharge pipe and a supply port is installed, and the primary discharge pipe is connected to a vacuum motor and sucked through the primary discharge pipe. A primary discharge part for discharging air inside the room; An adjustment unit installed in the suction chamber of the primary suction unit and having a pneumatic cylinder having an opening / closing rod to open and close the outlet of the mixing cylinder by sensing a capacity detecting sensor; The water removal device of the synthetic resin molding machine formed on the rear of the transfer screw for transporting the water support material passed through the suction chamber, and comprises a secondary discharge portion for discharging the internal air to the outside through the secondary discharge pipe connected to the vacuum motor. The method of claim 1, wherein the secondary discharge pipe formed at the rear of the transfer screw is installed in the upper, lower, left, right so as to communicate with the case in which the transfer screw is installed air humidifier discharge and constant raw material supply apparatus of the synthetic resin molding machine.