KR100775873B1 - Extension appointment synthetic resin feeding mechanism - Google Patents

Abstract

A synthetic resin feeding apparatus to mold products by opening or closing, through a rotary valve, a bi-directional channel connected to a T-die. An extruding machine(P) has a breaker(20) arranged in a flow channel(10). The extruding machine has one side on which a pipe block equipped with a chilling pipe is joined through a bolt and the other side on which a pipe block equipped with chilling pipes and a heating pipe is joined through a bolt. The pipe block has one side on which a roller drum is installed through a supporter, and a filter screen is wound on the roller drum. The filter screen is discharged to the outside through a central through hole of the pipe block and a front end of the breaker. A joint block(J) is connected to a front end of the extruding machine, and has inner flow channels(10',10'') with centers on which rotary valves(60,60') are arranged. The rotary valves have resin feeding holes, and rear ends where bolts are tightened. The inner flow channels are connected to nozzles(70,70') of a T-die(T) such that synthetic resin molten solution is supplied from the extruding machine to the T-die. The chilling pipe arranged in the pipe block has a cooling temperature of 8 to 12 deg.C, and the heating pipe has a heating temperature of 120 to 200 deg.C.

Description

Extension appointment synthetic resin feeding mechanism

1 is a front structural diagram showing the overall structure of the present invention

Figure 2 is a plan view showing the overall structure of the present invention

Figure 3 is a side structural view showing the overall structure of the present invention

4 is a detailed structural diagram of the resin supply valve of the present invention

5 is a cross-sectional structure diagram of a conventional resin supply valve

<Description of Symbols for Major Parts of Drawings>

(10) (10 ') (10 ") flow path 20 breaker

(30) (30 ') (30 ") Chilling Pipe (31) (31') Bolt

40 heating pipe 50 supporter

       (51) Roller Drums (52) Filter Screens

       (53) (53 ') through hole (60) (60') rotary valve

       (61) Resin Supply Hole (62) (62 ') Fixing Bolt

       70 (70 ') Nozzle (B) (B') Pipe Block

       (J) Joint block (P) Extruder

       (T) tee die

       The present invention is to filter the foreign material contained in the synthetic resin melt supplied to manufacture the synthetic resin film, selectively blocking and supplying the flow path to the T-Die and supplying by controlling the temperature of the chilling pipe and heating pipe The present invention relates to a resin supply device for a stretching machine, which can be used. More specifically, a filter screen is installed at the front end of a breaker installed on a flow path of a synthetic resin melt to filter foreign substances and installed on both sides of the flow path. By controlling the temperature of the chilling pipe and the heating pipe, it is possible to automatically replace a part of the filter screen by the resin supply pressure and to selectively block and supply the double flow path to the tee die, thereby facilitating the processing and production of the single-side film. It is.

        In general, a stretching machine for molding a synthetic film yarn is introduced into a hopper and melted the synthetic resin using heat, and then extruded with an extruder unit to process and cut the synthetic resin into a predetermined film shape. It is a device that winds through bobbins and mainly uses polypropylene or polyethylene to manufacture molten film in molding die through melting process of screw cylinder of extruder, and then cools and stretches it with cooling device. The synthetic resin film yarn is continuously manufactured by winding the finished yarn by sequentially passing the slitting, stretching and annealing unit. In order to mold the synthetic resin film yarn into a high quality product, foreign substances contained in the supplied synthetic resin melt Should filter it well It must maintain a constant supply pressure of the melt and to be able to block and supply of dual euro can easily be made depending on the desired product.

       Conventional synthetic resin supply device is composed of a flange portion of the breaker to be installed on the flow path of the resin melt, the filter is mounted on the front end of the breaker, the flange is installed in a bolted manner and the double flow path (1) (1 ') supplied to the tee die In FIG. 5, plug holes 2 and 2 'having threaded portions formed on both sides of the flow path 1 and 1' are formed in FIG. 5, and the plugs 3 with threads formed in the plug holes 2 and 2 'are formed. It was configured to adjust the amount of the resin melt supplied to the flow path (1) (1 ') by screwing (3') respectively.

       The conventional synthetic resin supplying apparatus filters the foreign matter contained in the resin melt by a filter mounted at the front end of the breaker for a predetermined time while molding the synthetic resin film yarn, so that no disruption occurs in supplying the resin melt. If it passes, the filter network will be blocked and the resin supply pressure will be lowered. Therefore, the filter should be replaced.

       In the above filter replacement, the flange on the flow path where the breaker is mounted must be detached from the internal filter by removing the bolt and nut, and the filter must be replaced with a new filter. Therefore, the extruder must be stopped to perform the replacement. Not only is the work time delayed, but the resin melt supplied to the flow path is cooled and solidified, and the solidified resin melt on the flow path must be discharged until the heating temperature is reached even after replacement of the filter. The cost is increased and the amount of resin melt supplied can be controlled by rotating the plugs 3 and 3 'installed in the dual flow paths 1 and 1' fed to the tee die. No single-sided film production is possible, and the flow paths 1 and 1 'are selectively selected by changing the shape of the plugs 3 and 3'. One side can be blocked, but the plug method (3) (3 ') screwed into the inside of the plug hole (2) (2') is blocked through a number of rotational operation for blocking the operation method is inconvenient problem There was this.

Therefore, the present invention was created for the purpose of solving the conventional problems as described above, installed through the filter screen to the front end of the breaker mounted on the flow path of the synthetic resin melt and installed on both sides of the supply pressure and the flow path of the resin melt By adjusting the temperature of the installed chilling pipe and heating pipe, it automatically adjusts the filter screen to give continuity of work to increase production, reduce raw materials, improve economics, and reduce workforce and cost according to maintenance to improve the working environment. It is possible to provide a resin supply device that facilitates the processing and production of the single-sided film by mounting a rotary valve in the dual flow path that can be supplied to the tee die.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

1,2,3 is a rotational valve on the dual flow path is provided through the filter screen is installed in the front end of the breaker installed on the flow path of the extruder in a forward, flat, side structure showing the overall structure of the present invention The mounted structure and the structure in which the chilling pipe and the heating pipe are mounted on both sides of the flow path of the extruder, and the filter screen wound on the roller are automatically discharged to the side end of the flow path through the flow path, FIG. Detailed structure of the invention resin supply valve shows the structure of the rotary valve installed on the inner double flow path of the joint block (Joint Block) connected to the tee die in the extruder.

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A pipe block (B) having a chilling pipe (30) built in one side of the extruder (P) having the breaker (20) installed in the flow path (10) is coupled with a bolt (31) and the other side of the chilling pipe (30 ') (30 "). ) And a pipe block (B ') in which the heating pipe (40) is incorporated are bolted (31'), and a roller drum (51) is installed as a supporter (50) on one side of the pipe block (B) and therein. The filter screen 52 is wound around the wound filter screen 52 through the front end of the breaker 20 installed in the flow path 10 through the central through hole 53 of the pipe block B. The resin supply hole 61 at the center in the inner double flow path 10 'and 10 "of the joint block J connected to the front end of the extruder P Perforated rotary valves 60 and 60 'are installed, and fastening bolts 62 and 62' are respectively fastened to the rear ends thereof, and the double flow paths 10 'and 10 &quot; 70 '(70') In supplying the synthetic resin melt from the extruder (P) to the T-die (T),

       The cooling temperature of the chilling pipes 30, 30 'and 30 "embedded in the pipe blocks B and B' is 8-12 deg. C, and the heating temperature of the heating pipe 40 is 120-200 deg. Shall be.

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As described above, the present invention has a tee through a double channel (10 ') (10 ") of the joint block (J) in the flow path (10) of the extruder (P) in order to manufacture a synthetic resin film yarn as shown in FIG. While supplying the synthetic resin melt to the nozzles 70 and 70 'of the die T, the foreign matter contained in the resin melt is filtered and separated, and the filter screen 52 is automatically adjusted, and the dual flow path 10' and 10 " It is to provide a supply device of a synthetic resin melt by allowing the rotary valves (60, 60 ') to easily supply and shut off the resin melt easily.

2 and 3, the pipe block B having the chilling pipes 30, 30 ′, 30 ″ and the heating pipe 40 are installed at both sides of the extruder P provided with the breaker 20 in the flow path 10. (B ') is installed and the roller block 51 is installed by the supporter 50 in the pipe block B to wind the filter screen 52 inside the roller drum 51 and the filter screen 52 is pipe block. It is inserted into the through hole 53 of (B) and drawn out through the through hole 53 'of the pipe block B' through the front end of the breaker 20 installed in the flow path 10.

When the synthetic resin melt heated to the flow path 10 of the extruder P is supplied at a pressure of 250 kg / cm 2, foreign substances contained in the melt are filtered by the filter screen 52 and supplied through the breaker 20.

At this time, the pipe block B in the resin melt passing through the flow path 10 by supplying cooling water of 8-12 ° C. to the built-in chilled pipes 30, 30 ′, 30 ″ of the pipe blocks B and B ′. The resin melt passing through the B 'side is supplied while the filter screen 52 passes through without passing through the through-holes 53 and 53' through which the filter screen 52 passes through while the temperature decreases.

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After supplying the resin melt as described above, when a certain time elapses, that is, when a large amount of foreign matter accumulates in the network of the filter screen 52 or the resin supply pressure drops, the sensor operates to be embedded in the pipe block (B) (B '). When the cooling water supplied to the filled chilling pipes 30, 30 'and 30 "was stopped and heated to 120-200 DEG C with the heating pipe 40, the slightly solidified resin flowing to both pipe blocks B and B' sides. As the melt is heated, the filter screen 52 wound around the roller drum 51 by the resin supply pressure (250 kg / cm 2) is formed to have a predetermined length through the one through hole 53 to the other through hole 53 ′. Eject automatically to normalize resin supply pressure and filter out foreign matter.

When the filter screen 52 is discharged to the other side as described above, the heating operation of the heating pipe 40 built in the pipe block (B) (B ') is stopped and the filling pipe (30, 30') ( 30 ") to supply the cooling water to filter and supply foreign substances of the resin melt in the flow path 10 in the same operation as described above.

Since the above operation is repeatedly performed by the operation of the sensor, the replacement of the filter screen 52 can be automatically performed.

The resin melt passing through the extruder P is supplied to the double flow passages 10 'and 10 "of the joint block J. The double flow passages 10' and 10" are provided with a rotary valve 60 as shown in FIG. 60 ') is configured to supply and block the respective flow paths 10' and 10 "to supply the resin melt in one direction or in both directions.

In the rotary valves 60 and 60 ', a resin supply hole 61 is drilled on the flow paths 10' and 10 ", and a fixing bolt 62 is provided at the rear end of the rotary valves 60 and 60 '. (62 '), to lock each of the flow paths 10' and 10 ", loosen the fixing bolts 62 and 62 'fastened to the rear ends of the rotary valves 60 and 60' and rotate the rotary valve. When the 60 (60 ') 60' is rotated by 90 degrees, the resin supply hole (61) rotates in a direction perpendicular to the direction of the flow path (10 ') or 10 "and is blocked and the fixing bolts 62 (62') of the rear end are blocked. When tightening and maintaining the blocked state, the above operation is performed in the reverse order to supply the resin melt, so that the resin can be easily operated and the malfunction can be prevented. Applicable to the production line of Container Bag

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Therefore, the present invention can automatically replace the filter screen to filter foreign matter and other impurities in the extruder to give the continuity of the work to increase the production volume, shorten the molding time, reduce maintenance costs and minimize the loss of raw materials It improves the economics and competitiveness, and it is possible to easily supply and cut off the bidirectional flow paths supplied to the tee die in a single direction and in both directions by using a rotary valve, thereby forming and producing various products.

Claims (3)

delete delete A pipe block (B) having a chilling pipe (30) built in one side of the extruder (P) having the breaker (20) installed in the flow path (10) is coupled with a bolt (31) and the other side of the chilling pipe (30 ') (30 "). ) And a pipe block (B ') in which the heating pipe (40) is embedded are coupled to the bolt (31'), and a roller drum (51) is installed as a supporter (50) on one side of the pipe block (B) and therein. The filter screen 52 is wound around the wound filter screen 52 through the front end of the breaker 20 installed in the flow path 10 through the central through hole 53 of the pipe block B. The resin supply hole 61 at the center of the inner double flow path 10 'and 10 "of the joint block J connected to the front end of the extruder P Perforated rotary valves 60 and 60 'are installed, and fastened bolts 62 and 62' are attached to the rear ends of the rotary valves 60 and 60 ', respectively, and the double flow paths 10' and 10 &quot; 70 '(70') In supplying the synthetic resin melt from the extruder (P) to the T-die (T), The cooling temperature of the chilling pipes 30, 30 ′, 30 ″ embedded in the pipe blocks B, B ′ is 8-12 ° C., and the heating temperature of the heating pipe 40 is 120-200 ° C. Synthetic resin feeder for the stretching machine characterized in that.

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