KR100964089B1 - Apparatus for producing hollow molding - Google Patents

Abstract

PURPOSE: An apparatus for producing hollow molded articles is provided to increase the productivity of products by minimizing the waiting time after a first molding process. CONSTITUTION: An apparatus for producing hollow molded articles comprises a first and a second forming units(100,200) and two groups of transferring members. The first forming unit comprises a first upper and lower dies(110,110'), and an injection-forming material feeding unit. The second forming unit forms and cools the formed product in the first forming unit. The second forming unit has a second upper and lower dies(210,210'). The second forming unit is installed in both sides of the first forming unit. Two groups of transferring members are installed to the front of the first and the second forming unit. Blower pins are installed in the transferring member.

Description

Molding apparatus for blow molded products {APPARATUS FOR PRODUCING HOLLOW MOLDING}

The present invention relates to a molding apparatus for a blow molded product, and more specifically, to a primary molding by injection molding and a secondary molding by blow molding, the inlet is narrow and the receiving part is expanded to various shapes. The present invention relates to a molding apparatus for a blow molding product, in which a structure of a molding apparatus to be molded is simple and heterogeneous products can be produced and productivity can be greatly improved.

In general, the apparatus for forming a blow molded article for manufacturing a synthetic resin container for storing various contents such as lotions, shampoos, and seasonings is used for primary molding of a preformed product (parison) having a tubular shape by injection in the primary molding section. Then, the preformed product is transferred to the mold position of the secondary molding part, the blower pin is lowered, blows air into the mold, and is molded in an inflated state along the inner wall of the secondary mold and cooled in the secondary molding part. It consists of molding and then demolding.

Conventional molding apparatus for producing a blow molded product through the process as described above is mainly formed by the mold of the primary and secondary molding parts installed in the direction of rotation of the transport operation member equipped with the blower pin is rotated horizontally. Horizontal rotating molding device to be made, and vertical and vertical rotational molding device that the conveying operation member equipped with the blower pin is rotated 180 degrees in the vertical direction to be formed by the mold of the primary and secondary molding parts installed in both sides. consist of.

Specifically, the conventional horizontal rotational molding apparatus will be described. A transport operation member for horizontal rotation by a horizontal rotation means is installed in the center, and the side surfaces of the transport operation member are divided into three directions to form three side surfaces. Three sets of blower pins, each of which is provided on the side surfaces, are respectively mounted, and upper and lower molds are provided with primary molding parts, secondary molding parts, and demolding parts each in the rotational direction of the transfer operation member facing the three side surfaces. After pre-molding the product into the tube shape in the primary molding unit provided, the upper and lower molds are separated, and the blower pin separates the tubular product from the mold to be transported, and then the transfer operation member rotates to form the primary After the molded product is transferred to the secondary molding part, it is put into the secondary upper and lower molds to undergo secondary molding to form and cool the finished product. Sent to a brother is to supply a product demoulding is made to the stripping means.

In the molding apparatus having the above-described configuration, since the primary and secondary molding parts and the demolding part are provided in the lateral direction of the transfer operation member, respectively, three sets of blowers are used to produce the product by performing one process on the side surface of the transfer operation member. There is a disadvantage in that it must be equipped with a pin, and a blower supply device for blowing air into the mold from the secondary forming part to the blower pin must be provided in the transfer operation member which causes the horizontal rotation to interfere with the rotation of the transfer operation member. There is a disadvantage in that the structure is complicated because there are many difficulties in constructing the blower supply device without receiving them.In particular, in the primary molding part, only the process of forming a tubular product by injection molding through the primary mold is performed. The part undergoes product molding and cooling process in the secondary mold, so that the molding time of the secondary molding part is more than twice that of the primary molding part. Since the first molding part has to wait while the molding is completed and then rotate the transfer operation member in accordance with the molding process time of the second molding part, the output per unit time is lowered, and the simultaneous production of heterogeneous products It has a disadvantage such as an impossible structure.

In addition, the up and down rotational molding apparatus is provided with two sets of blower pins respectively mounted on both sides of the transfer operation member which is rotated up and down, and these two sets of blower pins are used to form a tubular product in the primary forming portion on one side. After carrying out the process, the product is transferred to the secondary molding part, and the product is molded and cooled in the secondary mold, and then demolded. In the above vertical rotating molding apparatus, the blower pin is used as the blower pin in the secondary molding part. Since the blower supply device for blowing air to the air must be provided in the transport operation member to be rotated horizontally, there is a disadvantage in that the structure is complicated because there is a lot of difficulties in configuring the blower supply device without being disturbed by the rotation of the transport operation member, Since the molding time of the secondary molding part is about twice as long as that of the primary molding part, the primary molding part waits for a second time. According to the molding cycle time of the male part to rotate the transfer member to the transfer operation, so there is a disadvantage such that there is a disadvantage it is that much less output per unit time, the simultaneous production of different types of products are non-structural.

The present invention has been made in order to solve the above problems, and comprises a primary molded part and two sets of secondary molded parts provided in both directions of the primary molded part, and a blower pin in front of the primary and secondary molded parts. It is equipped with two sets of conveying operation members so that the two sets of conveying operation members can be selectively transferred to the 1st and 2nd forming part so that the molding can be performed. In one aspect, there is provided a molding apparatus for a blow molding product.

The present invention comprises a primary molding unit having an injection molding supply unit for supplying the primary upper and lower molds and the molding raw material; A secondary molding part provided with secondary molding parts having secondary upper and lower molds for forming and cooling the molded product transferred from the primary molding part and cooling the secondary molding parts; A hollow having a feed operation member equipped with a blower pin in front of the 1st and 2nd molding parts, and having 2 sets of transporting operation members so that 2 sets of transporting operation members can be selectively transferred to the 1st and 2nd molding parts so that molding is performed. Characterized in a molding apparatus of a molded product.

The present invention is provided with a primary molding unit for molding a preformed product in the center of the molding apparatus and at least two sets of secondary molding parts are provided on both sides of the primary molding unit, two or more sets of transport operation member equipped with a blower pin The product is produced by two or more sets of secondary molding parts while minimizing the waiting time after molding in the primary molding part by the configuration in which the primary molding part enters the primary molding part sequentially and then the second molding is performed. It is possible to greatly increase the, since the production of heterogeneous products in different forms by two or more sets of secondary molding is easy and the overall structure is simple, there is an effect that can greatly improve the competitiveness of the molding apparatus.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The molding apparatus of the blow molded product of the present invention includes a primary upper and lower molds 110 and 110 ′ for molding a preformed product and an injection molding supply unit 160 for supplying molding materials. A molding part 100; The secondary molding unit 200 is provided with secondary upper and lower molds 210 and 210 'for molding and transporting a product molded and transported in the primary molding unit 100, but the primary Two sets of secondary molding parts 200 provided in both sides of the molding part 100; Two sets of transfer operation members are provided with a transfer operation member 300 equipped with a blower pin 320 in front of the first and second molding parts 100 and 200, and provided with two sets of transfer operation members 300. 300 is selectively transported to the primary and secondary molding units 100 and 200, characterized in that the molding is made.

The primary molding unit 100, the first upper and lower molds 110, 110 'for forming a pre-formed product is made of the upper mold 100 is lifted by the lifting means 140 made of a cylinder The lower mold 110 'is fixedly installed on the table 150, and the raw material introduction part for receiving the raw material from the injection molding supply unit 160 at the inner rear of the upper and lower molds 110 and 110'. 120 is formed and is provided with a pin mounting groove 130 in which the blower pin 320 can be inserted in the inner front of the upper and lower molds 110 and 110 ′.

The first upper and lower molds 110 and 110 ′ are formed in a shape in which a raw material is supplied to the outside of the blower fin 320 to form a tube-shaped preformed product, but the product corresponds to the inlet part. It is in a form that can form a spiral to join the lid.

Injection molding supply unit 160, the primary molding unit 100 in order to supply the raw material molten to the raw material introduction portion 120 of the upper and lower molds 110, 110 'through the supply nozzle 162. Since it is installed backward and forward, the component of the injection molding supply unit 160 including the supply nozzle 162 is a configuration corresponding to the well-known configuration, the description thereof will be omitted.

The secondary molding unit 200, the secondary upper and lower molds having a cooling means (not shown) such as a cooling pipe for molding the product molded and transported in the primary molding unit 100 and cooling is performed ( 210 and 210 ', but the upper mold 210 is elevated by the lifting means 140 made of a cylinder and the lower mold 210' is fixedly installed on the table 150, the second upper, lower mold ( An inner front of the 210 and 210 ′ has a pin mounting groove 130 into which the blower pin 320 may be inserted.

The secondary molding part 200 is installed in each of the both sides of the primary molding part 100, but one or more secondary molding parts 200 may be formed on both sides, respectively, which is a secondary molding due to the characteristics of the molded product If the secondary process including the molding and cooling time of the product to be molded in the unit 200 takes three to four times more than the primary process formed in the primary molding unit 100, four sets of secondary Molding unit 200 is to be installed on each side can be used, and in this case, the feed length of the transfer operation member 300 of the two sets also need to be extended as a matter of course.

The conveying operation member 300 is provided in two sets, one side of the conveying operation member 300 is transferred from the primary forming unit 100 in the center to the left secondary forming unit 200 and the other conveying operation member 300 Is to be transferred to the right secondary molding unit 200 from the primary primary molding unit 100 in the center, but the operating table 310 is provided with a blower supply unit 330 and the blower pin 320, and the operating table 310 ) Is lifted by the lifting member 340 made of a cylinder and can be moved horizontally along the horizontal carrier 350.

The horizontal movable base 350 is coupled to the rotary feed screw rod 352 installed on the plate 370 to guide the guide rails 354 provided on both sides of the plate 370 by the rotating means 360 made of a motor and a reducer. According to the horizontal transfer, so that the transfer screw member 352 does not overlap the two sets of horizontal movable base 350 so as to independently transfer the transfer operation member 300 provided in two sets in the longitudinal direction to enable horizontal transfer It is preferable to be installed in a parallel form.

The blower pin 320 is horizontally mounted to the rear side portion of the operating table 310 to blow air supplied from the blower supply unit 330 provided in front of the operating table 310 through the hollow part 322. The tip of the hollow portion 322 of the blower pin 320 is provided with an inclined surface so that the opening is made of an opening or closing hole 324 formed to be coupled to face the opening pin 324, and the opening and closing hole 324 is formed with a guide guide 326 on the inner side. Connected to the front end of the hollow portion 322 by the spring 328 is elastically supported by the guide 326 is supported by the guide stand 326 in the primary molded part 100 by the opening and closing hole 324 in the hollow portion 322 The hollow part 322 by preventing the injection of the molding material into the blower and pushing the opening and closing hole 324 by the air pressure supplied from the blower supply part 330 during blow molding and demolding of the secondary forming part 200. The tip of the door is opened to blow air There.

As described above, the primary molding part 100 and the secondary molding part 200 consisting of two sets and the conveying operation member 300 consisting of two sets are formed to be formed by independent operations, respectively.

And the blower pin 320 according to the present invention is shown that a plurality of blower pins 320 is mounted on the operating table 310 in order to mold a plurality of formed products through one mold such a plurality of blower pins ( The configuration in which the 320 is collected corresponds to a set of blower pins 320, and the number of such blower pins is added or subtracted according to the size and characteristics of the product.

In the drawings, reference numeral A denotes a primary molded product molded in the primary molded part, and B denotes a secondary molded product molded in the secondary molded part.

When described in detail by the accompanying drawings an embodiment according to the molding apparatus of the blow molded product of the present invention as follows.

1 is a primary molding unit 100 for molding a preformed product in the molding apparatus according to the present invention, and two sets of secondary molding units 200 installed in both sides of the primary molding unit 100 and . A front view showing that two sets of transfer operation members 300 equipped with a blower pin 320 are provided in front of the first and second molding parts 100 and 200, and the first molding part in the center of the molding apparatus. The transfer operation member 300 on the left side which transfers to the 100 and the secondary forming part 200 on the left side to be formed is located in the primary forming part 100 for the primary forming, and the primary forming part The transfer operation member 300 on the right side to transfer to the 100 and the secondary side forming part 200 on the right side to be formed is placed in the state of the second side forming part 200 on the right side for secondary molding. have.

2 is a front view showing a state in which the transfer operation member 300 is lowered in the forming apparatus according to the present invention, in the present invention, the transfer operation member on the left side located in the primary forming unit 100 for the primary molding. Referring to the process of forming by 300, the transfer operation member 300 located in the primary forming unit 100 is lowered and then the blower pin 320 is the pin mounting groove of the primary lower mold (110 ') 130 is inserted into the first upper mold 110 is lowered and coupled with the first lower mold 110 'when the injection molding supply unit 160 located in the rear of the primary molding unit 100 is advanced The supply nozzle 162 is brought into close contact with the raw material introduction portion 120 of the primary upper and lower molds 110 and 110 ′, and primary molding is performed as a means for supplying a molding material.

That is, as shown in FIG. 5, the preformed tube-shaped preformed product is formed to surround the outer circumference of the blower pin 320 located in the mold in a state where the first upper and lower molds 110 and 110 ′ are coupled to each other. As it is molded, the part corresponding to the inlet part of the product is formed in a spiral shape. In this case, the blower pin 320 is a state in which the opening and closing port 324 blocks the front end of the hollow part 322 as shown in FIG. Is prevented from flowing into the hollow portion 322.

In this manner, when the primary molding is completed, as shown in FIG. 6, the primary upper mold 110 rises, and then the blower pin 320 mounted on the transfer operation member 300 rises to form the primary molded product in the primary phase, The lower molds 110 and 110 ′ are spaced apart from each other so as to be transferred to the secondary molding part 200.

3 shows a state in which the transfer operation member 300 is transferred in the molding apparatus according to the present invention, and the primary molded product is transferred to the secondary molding part 200 on the left side by the transfer operation member 300 on the left side. Then, the transfer operation member 300 located in the secondary forming unit 200 is lowered, and then the blower pin 320 is inserted into the pin mounting groove 130 of the secondary lower mold 210 'and then the secondary upper mold. When the 210 is lowered and combined with the secondary lower mold 210 ', the blower pin 320 blows air supplied by the blower supply unit 330 in the tip direction, and thus the secondary upper and lower molds 210 are lowered. (210) (210 ') by blowing air into the inflated state along the inner wall of the secondary mold and cooling the molded product to complete the molding of the product.

That is, when the air supplied from the blower supply unit 330 provided in front of the operating table 310 as shown in Figure 7 and 10 blows into the hollow portion 322 of the blower pin 320, the hollow portion 322 Installed at the tip of the blower pin 320 connected to the guide 326 in which the spring 328 is elastically supported in a direction opposite to the front end of the hollow part 322 to open the opening 324 by pushing the air. The secondary upper mold is blown into the upper and lower molds 210 and 210 '.

When the secondary molding is completed as described above, the secondary upper mold 210 rises, and then the blower pin 320 mounted on the transfer operation member 300 rises to form the secondary molded product as the secondary upper and lower molds ( When the molded product is demolded after being spaced apart from 210) (210 '), the demolding means may demold the molded product by blowing air through the hollow part 322 of the blower pin 320, and the secondary Since the molding part 200 can be used with a separate demolding means on one side, the present invention is not limited thereto.

In the same process as described above, the transfer operation member 300 on the left side can be formed by being transferred from the primary forming unit 100 and the secondary forming unit 200 on the left side of the forming apparatus and at the same time, the transfer operation member on the right side. 300 is a molding can be molded in an independent action in the primary molding unit 100 and the right secondary molding unit 200 in the center of the molding apparatus, wherein the raw material is supplied to the primary molding 1 Compared to the primary molding unit 100, the secondary molding unit 200 that performs secondary molding and cooling takes about twice as much as the molding time, so that the left and right transfer operation members 300 alternately form the center of the molding apparatus. Since the molding is possible by transferring to the primary molding part 100, the present invention minimizes the waiting time after the molding in the primary molding part 100, and the present invention provides a pair of secondary molding parts 200 installed on both sides. Second molding is more than twice as much as one set of secondary molding The product can be produced.

In addition, the present invention can produce a variety of products as a means for secondary molding by mounting a different type of mold in the left and right secondary molding portion 200, the second blower pin 320 is provided with a secondary Since the transfer operation member 300 is provided to perform the molding and move horizontally, the blower supply unit 330 is easily installed, and the mold replacement of the primary and secondary molding units 100 and 200 is convenient. In general, the structure is simple, easy to use, and can increase productivity.

In the above, the present invention has been described with reference to the above embodiment, but various modifications can be made within the technical scope of the present invention.

1 is a front view showing a molding apparatus of a blow molded product according to the present invention.

Figure 2 is a front view showing a state in which the transport operation member is lowered in the molding apparatus of the blow molded product according to the present invention.

Figure 3 is a front view showing a state in which the transfer operation member is transferred in the molding apparatus of the blow molded product according to the present invention.

Figure 4 is a side view showing a molding apparatus of a blow molded product according to the present invention.

Figure 5 is an exemplary cross-sectional view showing the primary molding by the upper, lower molds of the primary molding portion in the molding apparatus of the blow molded product of the present invention.

Figure 6 is an exemplary cross-sectional view when the primary molded product formed by the primary molded part in the molding apparatus of the blow molded product of the present invention is transferred to the secondary molded part by a blower pin.

7 is a cross-sectional view illustrating the secondary molding by the upper and lower molds of the secondary molding portion in the molding apparatus of the blow molded product of the present invention.

Figure 8 is a cross-sectional view when demolding the finished product molded and cooled by the secondary molding portion in the molding apparatus of the blow molded product of the present invention.

Figure 9 is an enlarged cross-sectional view illustrating a portion of the blower pin portion showing a state in which the hollow end portion of the blower pin according to the present invention is blocked by the opening and closing port.

Figure 10 is an enlarged cross-sectional view of a part of the blower pin to blow the air to open the hollow end of the blower pin according to the present invention.

Figure 11 is a perspective view of one embodiment molded by the molding apparatus of the blow molded product according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

100: 1st forming part 110,110 ': 1st upper and lower mold

120: raw material introduction portion 130: pin mounting groove

140: lifting means 150: table

160: injection molding supply unit 162: supply nozzle

200: 2nd molding part 210,210 ': 2nd upper and lower mold

300: transfer operation member 310: operating table

320: blower pin 322: hollow part

324: opening and closing door 326: guide stand

328: spring 330: blower supply

340: lifting member 350: horizontal moving table

352: rotary feed screw rod 354: guide rail

360: rotation means 370: plate

A: 1st molded product B: 2nd molded product

Claims (8)

The upper mold 110 is lifted by the lifting means 140 made of a cylinder and the lower mold 110 'is fixedly installed on the table 150, and the inner rear of the primary upper and lower molds 110 and 110'. Raw material introduction portion 120 is formed in the primary upper and lower molds 110 and 110 'in the inner front of the upper and lower molds 110 and 110' with the pin mounting grooves 130 provided thereon. A primary molding part 100 having an injection molding supply part 160 for supplying raw materials; The secondary molding unit 200 is provided with secondary upper and lower molds 210 and 210 'for molding and transporting a product molded and transported in the primary molding unit 100, but the primary Secondary molding unit 200 and respectively installed in both sides of the molding unit 100; In the front of the first and second molding parts 100, 200, the blower pin 320 is provided with a transfer operation member 300, but has two sets of transfer operation members 300 and two sets of transfer operation members ( The apparatus for forming a blow molding product, characterized in that 300 is selectively transported to the primary and secondary molding parts 100 and 200 so that molding is performed. delete The method of claim 1, Injection molding supply unit 160; In order to supply the molten raw material to the raw material introduction portion 120 of the primary upper and lower molds 110 and 110 'through the supply nozzle 162, it is installed to be forward and backward behind the primary molding portion 100. Molding apparatus for a blow molding product, characterized in that. delete The method of claim 1, The secondary molding unit 200; The second upper and lower molds 210 and 210 ', but the upper mold 210 is elevated by the lifting means 140 made of a cylinder and the lower mold 210' is fixed to the table 150, Molding apparatus for a blow molding product, characterized in that the inner front of the secondary upper, lower molds 210, 210 'is provided with a pin mounting groove 130, the blower pin 320 can be inserted. The method of claim 1, The transfer operation member 300; It is provided in two sets each one transfer operation member 300 is transferred from the primary forming unit 100 in the center to the left secondary forming unit 200 and the other transfer operation member 300 is the primary forming unit 100 in the center In order to be transferred to the right secondary molding unit 200), but the blower supply unit 330 and the blower pin 320 is provided with a working table 310, the operating table 310 is a lifting member 340 made of a cylinder The lifting apparatus by the molding apparatus of the blow molded product, characterized in that the horizontal movement along the horizontal movement (350). The method of claim 6, The horizontal movable table 350; Two sets of horizontal moving table to be coupled to the rotary feed screw rod 352 installed on the plate 370 to be horizontally transferred by the rotating means 360, but to independently transfer the transfer operation member 300 provided in two sets. 350. The apparatus for forming a blow molded article, characterized in that the rotating screw rod 352 is installed in parallel in the longitudinal direction to allow horizontal transfer without overlapping. The method of claim 6, The blower pin 320 is; It is mounted horizontally on the rear side of the operating table 310 to blow air supplied from the blower supply unit 330 provided in front of the operating table 310 through the hollow part 322 and blower pin 320 The opening of the hollow portion 322 is provided with an inclined surface to be opened to the opening and closing openings 324 formed to be opposed to this, the opening and closing openings 324 spring 328 elastic in the opposite direction to the front end of the hollow portion 322 Molding apparatus for blow molded products, characterized in that the configuration is connected to the guide guide 326 supported.

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