KR20100064064A - Injection molding machine for bottle cap - Google Patents

Abstract

PURPOSE: An injection molding machine for bottle caps is provided to prevent interference during the separation of a bottle cap by moving a female mold up and down over the elevation length of a male lifting mold and a lifting and separating plate. CONSTITUTION: An injection molding machine(100) for bottle caps comprises a female mold(110), a male fixed mold(120), a male lifting mold(130), a fixing support disk(140), and a lifting and separating plate(150). The elevation length of the male lifting mold corresponds to the length between the bottom of the receiving groove and the lower surface of a male fixed core(122) of the fixed mold. The female mold is moved up and down over total lifting length of the lifting and separating plate and the male lifting mold. Undercut for forming a seal rings(122a,134b) seal a bottle neck by being inserted into the entrance of the bottle neck.

Description

Injection molding machine for bottle cap {Injection molding machine for bottle cap}

The present invention relates to an injection molding machine for a bottle cap, and more particularly, is inserted into the inner circumferential surface of the bottleneck in close contact with the sealing of the undercut shape to seal the inlet of the bottleneck and the bottom circumferential surface of the bottleneck inlet, the bottle cap from the bottleneck of the bottle It relates to an injection molding machine for a bottle cap of the structure that can be molded integrally during the molding of the bottle cap (Lip) functioning as a stopper so that the neck fixing member at the bottom of the bottle cap is supported on the bottle neck.

Generally, there are various materials such as leather bags, metal bottles, porcelain bottles, glass bottles and plastic bottles. However, glass bottles and plastic bottles generally make up the mainstream. At this time, the bottle is coupled to the bottle cap to prevent leakage of the sake or drink filled by sealing the bottleneck corresponding to the inlet of the bottle.

As described above, the bottle cap generally has a structure in which a thread is formed on the inner circumferential surface corresponding to the thread formed on the outer circumferential surface of the bottleneck, so that the bottle cap is generally coupled to the bottleneck by screwing. Such bottle caps generally use metal bottle caps for glass bottles, and plastic bottle caps are commonly used for plastic bottles.

On the other hand, when looking at the structure of the bottle cap made of a screw coupling method, a screw thread corresponding to the screw thread formed on the outer circumferential surface of the bottleneck is formed on the inner circumferential surface is formed on the lower surface of the body, the body is coupled to the bottleneck through screwing, the body from the bottleneck Neck fixing member fixed to prevent it from randomly separated, the bottle is removed from the bottle neck by rotating the body when the horizontal incision line formed so that the horizontal incision is made between the body and the neck fixing member when separating the bottle cap from the bottle bottle by rotating the body Prior to the incision of the horizontal incision line, the neck fixing member is composed of a break line formed so as to vertically break in the horizontal incision line.

The bottle cap made of a structure as described above is rotated in the direction of separating the body when the bottle cap is separated from the bottle bottle in a fixed state coupled to the bottle neck neck fixing member is in a state to be fixed to the bottle neck, according to the rotation of the body As the stress is concentrated on the horizontal incision line and the breaking line, the incision and fracture are made, and eventually only the neck fixing member remains in the bottleneck and the body is separated from the bottleneck.

However, the bottle cap according to the prior art has a structure that seals the bottleneck through the coupling by screw coupling, so that when the bottle cap is separated from the bottleneck and tightened again through screwing, the sealing force is lowered and the bottleneck and the bottle There is a problem that can occur between the lid leaks.

Therefore, the present applicant has a bottle cap having a completely new structure from the conventional bottle cap, that is, the bottle cap is inserted into the inner circumferential surface of the bottleneck, and is sealed to the bottom circumferential surface of the bottom of the bottleneck inlet with an undercut-type sealing that primarily seals the bottleneck inlet. The bottle cap has been developed in which a lip that functions as a stopper is integrally formed on the bottle cap so that the neck fixing member at the bottom of the bottle cap is supported on the bottle neck when the bottle is separated from the bottle bottle.

However, in applying the bottle cap of the new structure in which the undercut-type sealing and the lip are integrally formed as described above, it is known that the manufacturing is impossible with the existing injection molding machine for bottle caps. The injection molding machine for bottle caps, which can mold a new bottle cap in large quantities, has also been newly developed.

The present invention is conceived in order to form a large amount of bottle caps of a completely new structure as described above, is inserted in close contact with the inner circumferential surface of the bottleneck to seal the inlet of the bottleneck and the outer peripheral surface of the bottom of the bottleneck inlet When the bottle cap is separated from the bottleneck of the bottle, the bottle cap of the structure which enables the molding of the bottle cap in which the lip which functions as a stopper is integrally formed so that the neck fixing member at the bottom of the bottle cap is supported on the bottleneck The purpose is to provide an injection molding machine for use.

In addition, another object of the technique according to the present invention is inserted in close contact with the inner peripheral surface of the bottleneck in the form of undercut sealing to seal the inlet of the bottleneck is fastened to the outer peripheral surface of the bottom of the bottleneck inlet bottle cap when separating the bottle cap from the bottleneck of the bottle The neck fixing member of the lip (Lip) that functions as a stopper to be supported on the bottle neck is formed so that the molding of the molded bottle cap can be easily formed during the molding of the bottle cap.

The present invention is configured to achieve the object as described above is as follows. That is, the injection molding machine for the bottle cap according to the present invention is formed on the lower inner surface of the female mold corresponding to the outer shape of the bottle cap is formed on the lower inner surface of the gate hole is formed so that the injection of the molten resin is formed so as to be elevated A female mold; It is located inside the molding groove of the female mold, and has a diameter corresponding to the inner diameter of the bottleneck. The male fixed core and the lower fixed core having the undercut for sealing molding are formed on the upper edge of the female mold. Male fixed mold made of a fixed rod formed a predetermined length in diameter; Deep receiving grooves are formed on the outer circumferential surface of the male fixed mold in order to allow the elevating rod and the male fixed core to be deeply coupled to each other, but the upper end of the inner groove of the male groove has an undercut for sealing molding of the male fixed core. A male-shaped lifting mold formed with a male-shaped lifting core formed with a spiral groove formed on the outer circumferential surface of the undercut for sealing forming a groove, and forming an inner mold of the bottle cap together with the male fixed mold; It is fixed on the outer circumferential surface of the elevating rod of the male elevating die, but supports the lower elevating core of the male elevating die through the upper surface so that the male fixed core and the male elevating core are located on the same horizontal line. A fixed support disc having a support jaw formed at one side; And a liftable coupling on an outer circumferential surface of the fixed support disc at the upper side of the support jaw, but supports the lower surface of the female mold through the upper surface to form a vertical gap between the male mold and the male mold. While maintaining, it consists of a configuration including a lifting release plate for demolding the molded bottle cap from the male mold by rising upward.

When the bottle cap is molded in the configuration of the present invention as described above, the male elevating mold is lowered by lowering the elevating die frame while lowering the elevating die plate while supporting the upper surface of the supporting jaw of the fixed support disc. Female molding in a structure in which the upper surface of the male fixed core and the male elevating core are positioned on the same horizontal line so as to be supported by the upper surface, and then the female mold is lowered so that the lower surface thereof is supported on the upper surface of the elevating release plate. Molding can be performed by injecting molten resin through the gate hole of the mold.However, when demolding the molded bottle cap, the male lifting mold is raised by raising the female molding mold or the female lifting mold. Lift the lifting plate from the female mold and the male fixed mold from the bottle cap. It can be configured to be demoulded of the shaped bottle cap.

On the other hand, in the configuration as described above, the lifting length of the male lifting mold is made up by the length between the bottom of the male fixing core of the male fixing mold from the bottom of the receiving groove of the male lifting mold. In addition, the lifting length of the above-mentioned female mold is suitable for being elevated above the combined lifting length of the male lifting mold and the lifting release plate.

In the present invention as described above, the undercut for sealing molding between the male fixed mold and the male elevating mold is a certain length is inserted into the inlet of the bottle when the molded bottle cap is coupled to the bottleneck of the bottle through close contact with the inner diameter of the bottle It can be said to be a configuration for forming a sealing to be sealed.

In addition, in the configuration according to the present invention, the undercut for sealing molding between the male fixed mold and the male elevating mold is formed in such a manner that the sealing structure formed therefrom spreads outward toward the lower end and rounds inwardly toward the end. It is formed so that the interference is not generated when the sealing is inserted into the inlet of the bottleneck, while the molded bottle cap can be made to be in close contact with the inner diameter of the bottleneck by the elastic force to open the sealing when the bottle cap is coupled to the inlet of the bottleneck. have.

In the configuration according to the present invention between the male lifting mold and the fixed support disc, the lip (Lip) to function as a stopper to support the neck fixing member to form the bottom of the bottle cap when the bottle cap fastened to the bottleneck is supported on the bottleneck Lip forming means for molding the may be further configured. At this time, the lip forming means is formed integrally protruding on the outer bottom of the male elevating core, but the female lip forming portion is formed in the inner diameter lip molding undercut; A lip forming undercut is opposed to a surface corresponding to the lip forming undercut of the female lip forming part, which is formed in the form of the lifting rod outer circumferential surface of the male lifting mold and the lower surface of the male lifting core and the female lip forming part. It may be formed of a spacing formed male lip.

Meanwhile, a lip formed at the bottom of the bottle cap by the above-described lip forming means is molded upward from the bottom of the bottle cap to be molded at the time of molding the bottle cap, while demolding the molded bottle cap. It is composed of a configuration that extends downward from the bottom of the inner center from the lower end of the bottle cap through the locking according to the demold of the lifting release plate and the lower end of the female lip forming unit.

In addition, in the configuration according to the present invention, the shape of the lip molding undercut formed to face each of the female lip molding portion and the male lip molding portion is further formed with triangular irregularities corresponding to each other male and female. It can be made in one configuration to be made.

Further, in the configuration according to the present invention, the male elevating core upper surface of the male elevating mold may be further formed with an outer diameter sealing molding groove so that an outer diameter sealing is formed in close contact with the outer diameter surface of the bottleneck inlet side of the bottle.

As described above, according to the present invention is inserted in close contact with the inner circumferential surface of the bottleneck is fastened to the outer peripheral surface of the bottom cut of the bottle opening and the undercut-shaped sealing to seal the entrance of the bottleneck when the bottle cap is separated from the bottleneck of the bottle neck lock of the bottom of the bottle cap A bottle cap having a completely new structure can be manufactured by forming a bottle cap in which a lip serving as a stopper is integrally formed so that the member is supported on the bottleneck.

In addition, the technique according to the present invention is tightly inserted into the inner circumferential surface of the inlet of the bottleneck and the undercut-type sealing to seal the inlet of the bottleneck and fastened to the outer peripheral surface of the bottom of the bottleneck inlet, when the bottle cap is separated from the bottleneck of the bottle, the neck lock at the bottom of the bottle cap In the case of forming a bottle cap in which a lip that functions as a stopper is integrally formed so that the member is supported on the bottleneck, there is an advantage that the molded bottle cap can be easily demolded.

Hereinafter will be described in detail with respect to the injection molding machine for a bottle cap according to an embodiment of the present invention.

1 is a cross-sectional configuration showing a bottle cap injection molding machine according to the present invention, Figure 2 is a cross-sectional configuration showing the molding of a bottle cap by the injection molding machine for a bottle cap according to the present invention, Figure 3a is a bottle according to the present invention The first action showing the action for demolding the bottle cap molded through the injection molding machine for the lid, Figure 3b is a second action showing the action for demolding the bottle cap molded through the injection molding machine for the bottle cap according to the present invention Figure 3c is a third action showing the action for demolding the bottle cap molded through the injection molding machine for the bottle cap according to the present invention, Figure 3d is a bottle cap molded through the injection molding machine for the bottle cap according to the present invention Figure 4 is a fourth action showing the action for demolding, Figure 4 is a cross-sectional view showing the bottle cap molded through the injection molding machine for the bottle cap according to the invention, Figure 5 is molded through the injection molding machine for the bottle cap according to the present invention Bottle cap A sectional view showing a state in which the coupling neck.

1 to 5, the bottle injection molding machine 100 according to the present invention is a bottleneck is inserted into the bottleneck 22 in close contact with the inner circumferential surface of the bottle cap 22 when the bottle cap 10 is combined The neck of the bottom of the bottle cap when the bottle cap 10 is separated from the bottleneck 22 of the bottle 20 by being fastened to the outer peripheral surface of the bottom of the bottle neck 22 inlet and the undercut sealing 14 to seal the mouth of the bottle 22. It relates to an injection molding machine 100 for a bottle cap for forming the bottle cap 10 in which a lip (16) which functions as a stopper is integrally molded so that the fixing member 12 is supported by the bottleneck 22.

As described above, a bottle in which an undercut-type sealing 14 for sealing the inlet of the bottleneck 22 and a lip serving as a stopper are integrally formed so that the neck fixing member 12 is supported by the bottleneck 22. Looking at the configuration of the injection molding machine 100 for the bottle cap for molding the lid 10 as follows. That is, the bottle cap molding machine 100 according to the present invention is a female mold forming mold 110 in which a female molding groove 112 corresponding to the outer shape of the bottle cap 10 and a gate hole 114 in which molten resin is injected are formed. ), A male consisting of a male fixed core 122 having a sealing molding undercut 122a corresponding to an inner diameter of the bottle neck 22 and a fixed rod 124 having a predetermined length formed at the center of the lower surface of the male fixed core 122. The receiving die 134a is deeper than the thickness of the lifting rod 132 and the male fixing core 122 which are liftably coupled on the outer circumferential surface of the fixed mold 120 and the fixed rod 124 of the male fixed mold 120. Although the upper end of the inner diameter surface of the receiving groove 134a is formed, the groove-shaped sealing molding undercut 134b corresponding to the sealing molding undercut 122a of the male fixing core 122 and the spiral groove 134c are formed on the outer circumferential surface thereof. Male lifting lifting mold 130, male lifting lifting mold 130 of the male lifting core 134 formed Supporting the lower surface of the elevating core 134, the male fixed core 122 and the male elevating core 134, the upper surface is located on the same horizontal line, while the outer support surface fixed support disc 140 is formed with a support jaw 142 on one side height And lifting and lowering from the male molds 120 and 130 to form the bottle cap 10 formed by the upward upward coupling coupled to the lifting support disc 140 on the outer circumferential surface of the upper support jaw 142. It consists of the structure of the release plate 150.

On the other hand, through the injection molding machine 100 for the bottle cap according to the present invention configured as described above, the undercut sealing 14 and the neck fixing member 12 to seal the inlet of the bottleneck 22 to the bottleneck 22 Looking at the molding and demolding of the bottle cap 10 in which a lip (Lip) that functions as a stopper is integrally molded to be supported as follows. First, when the bottle cap 10 is molded, the elevating die plate 140 is lowered to lower the male lifting mold 130 while being supported on the upper surface of the support jaw 142 of the fixed support disc 140. The bottom surface of the male lifting core 122 and the male lifting core 134 are positioned on the same horizontal line so that the lower surface thereof is supported on the upper surface of the elevating release plate 150. The lower surface of the bottle cap 10 is injected by injecting molten resin through the gate hole 114 of the female mold 110 in a structure such that the lower surface thereof is supported on the upper surface of the elevating release plate 150. Allow molding to take place.

Then, after the molding of the bottle cap 10 to be molded in the present invention through the process as described above, the molded bottle cap 10 is demolded through the demolding, and the demolding of the molded bottle cap 10 is performed. Consists of the following steps: That is, when the molded bottle cap 10 is demolded, the bottle cap 10 formed by raising the female mold 110 or the male lifting mold 130 at the same time as the female mold 110 is raised. ), Lifting and lowering the lifting mold release plate 150 in the state of demolding from the female mold 110 and the male fixed mold 120 to demold the bottle cap 10 formed from the male lifting mold 130.

The female mold 110 and the male lifting mold 130 rising upward when demolding the molded bottle cap 10 in the configuration of the molding and demoulding process of the bottle cap 10 as described above are female molds ( After the first rise of 110, the male lifting mold 130 may be configured to rise in this way, but in the present invention, the male lifting mold 130 may be simultaneously raised with the rising of the female mold 110. It was. In this case, when demolding the molded bottle cap 10, the female mold 110 so as to ensure sufficient space to separate the deformed bottle cap 10 between the female mold forming mold 110 and the male lifting mold 130. The ascending length of has a long lifting length compared with the lifting length of the male lifting die 130.

In addition, as shown in the molding process of the bottle cap 10 and the demolding process of the molded bottle cap 10 as described above, in the configuration of the injection molding machine 100 for the bottle cap according to the present invention, the female mold 110 is formed. And it can be seen that the male lifting mold 130 and the lifting release plate 150 is configured to be elevated up and down, in the case of the male fixing mold 120 and the fixed support disc 140 is fixed configuration. have.

Referring to each component of the bottle cap injection molding machine 100 according to the present invention in more detail as follows. First, the female mold 110 is for molding the outer shape of the bottle cap 10 to be molded, the female mold mold 110 is a bottle cap 10 to be molded as shown in Figures 1 to 3 Shaped groove 112 of the female shape corresponding to the outer shape of the) is formed on the lower inner surface is formed of a structure in which the gate hole 114 in which the injection of molten resin is made in the center of the upper surface.

Female mold 110 is configured as described above is formed in the form of a band at the bottom of the bottle cap 10 is molded as shown in Figures 1 to 3 fixed to the lower end of the bottle neck 22 It consists of the structure which can be shape | molded to the member 12. Of course, in order to separate from the molded bottle cap 10 to the neck fixing member 12, the molded bottle cap 10 has to form a horizontal cut line 18 through post-processing.

On the other hand, the female mold as described above 110 must be made of a structure that can be elevated for demoulding the molded bottle cap (10). As for the lifting length of the female mold 110, it is suitable that the lifting length of the male lifting mold 130 and the lifting release plate 150, which are to be described later, is elevated. In the present invention, the female mold 110 has substantially the combined lifting length of the male elevating mold 130 and the elevating mold release plate 150 to be raised or higher so that interference does not occur when demolding the molded bottle cap 10. It was.

The male fixed mold 120 as the male molding frame constituting the injection molding machine 100 for a bottle cap according to the present invention is for forming a part of the inner diameter and a lip (Lip: 16) of the bottle cap 10 to be molded. As such, the male fixed mold 120 is located in the forming groove 112 of the female mold 110 as shown in Figures 1 to 3 with a diameter corresponding to the inlet diameter of the bottleneck 22 The fixed rod formed of a predetermined length with a smaller diameter compared to the male fixed core 122 at the center of the male fixed core 122 and the male fixed core 122 and the male fixed core 122 formed with a sealing molding undercut (122a) on the upper side edge ( 124). At this time, the male fixed mold 120 is made of a fixed structure.

In the configuration of the male fixed mold 120 configured as described above, the male fixed core 122 forming an upper portion is formed in a disk shape having a predetermined thickness, and an upper edge portion of the male fixed core 122 formed in a disk shape is provided. A sealing molding undercut 122a for forming an undercut sealing 14, which is tightly inserted into the inlet inner circumferential surface of the bottleneck 22 and seals the inner diameter of the inlet of the bottleneck 22, is formed. The sealing cut undercut 122a has a shape in which the upper edge portion of the disc shaped male fixed core 122 is chamfered at a predetermined inclination angle.

Meanwhile, the male fixed mold 120 as described above has a disc shaped male fixed core 122 having an undercut 122a for sealing molding formed on a top of a fixed rod 124 having a cylindrical shape having a predetermined length. In the form of At this time, the discoid male high-lower core 122 is made of a larger diameter than the diameter of the fixed rod 124, but made of an outer diameter corresponding to the inner diameter of the receiving groove 134a of the male elevating die 130 to be described later.

Then, the sealing molding undercut 122a of the male fixed mold 120 as described above is a bottleneck 22 through a sealing molding groove formed with the sealing molding undercut 134b configured in the male lifting mold 130 described later. ) To seal the inner diameter of the inlet. This sealing 14 is formed on the inner upper surface of the bottle cap 10 formed as shown in Figs. 4 and 5 is in close contact with the inner diameter through the insertion into the inlet of the bottleneck 22 of the bottle 20 The inlet is sealed.

The male lifting mold 130 as the male molding frame constituting the injection molding machine 100 for a bottle cap according to the present invention has an inner diameter of the bottle lid 10 to be molded together with the male fixing mold 120 described above. For forming a part of the lip (Lip: 16), the male lifting mold 130 is elevated on the outer circumferential surface of the fixed rod 124 of the male fixing mold 120, as shown in Figs. The receiving groove 134a is formed deeper than the thickness of the lifting rod 132 and the male fixing core 122 having a predetermined length, but the upper end of the inner diameter surface of the male fixing core 122 of the receiving groove 134a is formed. The bottle cap together with the male fixed mold 120 comprises a groove-shaped sealing molding undercut 134b corresponding to the sealing molding undercut 122a and a male elevating core 134 having a spiral groove 134c formed on an outer circumferential surface thereof. It consists of the structure which molds the internal mold of 10). In addition, the male lifting mold 130 has a function of demolding the molded bottle cap 10 from the male fixing mold 120 through the lifting.

In more detail, the male elevating die 130 is composed of an male elevating core 134 constituting an upper portion and an elevating rod 132 constituting a lower portion. An upper portion of the male elevating core 134 is formed with an accommodating groove 134a having an upwardly open structure for accommodating the male fixed core 122 of the male fixed mold 120 described above, and the male elevating core 134 is formed. The lower center of the) is configured to the lifting rod 132 of a predetermined length, the lifting groove 134a from the bottom center of the lifting rod 132 is made of a configuration in which the lifting through grooves (132a) are formed to penetrate up and down. At this time, the inner diameter of the elevating through groove 132a is formed with an inner diameter corresponding to the outer diameter of the fixed rod 124 forming the lower portion of the male fixed mold 120 so that the male elevated mold 130 can be moved up and down. Lose.

Meanwhile, in the configuration of the male lifting mold 130 configured as described above, the receiving groove 134a of the male lifting core 134 is formed with an inner diameter corresponding to the outer diameter of the male fixing core 122 while the male fixing core ( Compared to the thickness of 122). In addition, the sealing 14 of the bottle cap 10 is formed at the upper end of the inner diameter of the receiving groove 134a of the male elevating core 134 together with the sealing cut undercut 122a formed on the outer diameter surface of the male fixing core 122. A sealing molding undercut 134b is formed. That is, the sealing molding undercuts 122a and 134b between the male fixed mold 120 and the male elevating mold 130 are bottlenecks when the molded bottle cap 10 is coupled to the bottleneck 22 of the bottle 20. A certain length is inserted into the inlet of the 22 to form a sealing 14 to seal the bottleneck 22 through close contact with the inner diameter surface.

Therefore, as described above, since the depth of the receiving groove 134a formed in the upper portion of the male elevating core 134 is made deeper than the thickness of the male fixed core 122, the elevating length of the male elevating frame 130 is increased. It can be seen that the configuration is made up and down by the length between the bottom surface of the male fixing core 122 of the male fixing mold 120 from the bottom surface of the receiving groove 134a of the male lifting mold 130.

The male lifting mold 130 as the male molding mold configured as described above is inserted into and coupled to the fixing rod 124 of the male fixing mold 120 described above through the lifting through groove 132a of the inner center thereof. The male fixing core 122 of the male fixing mold 120 is accommodated in the receiving groove 134a of the male lifting core 134 of the male lifting mold 130. The male lifting mold 130 coupled with the male fixed mold 120 coupled as described above is lifted up and down on the fixed rod 124 of the fixed male fixed mold 120. At this time, the lifting length of the male lifting mold 130 is between the bottom surface of the male fixing core 122 of the male fixing mold 120 from the bottom surface of the receiving groove 134a of the lifting mold 130 as described above It is lifted by the length of.

In addition, the undercuts 122a and 134b for sealing molding between the male fixed mold 120 and the male elevating mold 130 as described above are formed by the structure of the sealing 14 to be formed so as to go outward toward the bottom. It is formed to have a rounded shape inward to reach the end. Therefore, the sealing 14 formed by the above-described sealing molding undercuts 122a and 134b does not cause interference with the entrance of the bottleneck 22 when the molded bottle cap 10 is coupled to the bottleneck 22. Of course, by the elastic force to open the sealing 14 is in close contact with the inner diameter surface of the bottleneck 22 it is possible to more completely seal the bottleneck 22 inlet.

Outer diameter for forming the outer diameter sealing 14a in close contact with the outer diameter surface of the bottle neck 22 inlet side of the bottle 20 is formed on the upper surface of the male lifting core 134 of the male lifting mold 130 as described above Sealing forming groove 134d is further formed. The outer diameter sealing 14a formed by the outer diameter sealing molding groove 134d is the outer diameter of the inlet side of the bottleneck 22 when the bottle cap 10 formed as described above is coupled to the bottleneck 22 of the bottle 20. It is in close contact with the surface to seal the bottleneck 22 inlet secondary. Of course, the primary closure of the bottleneck 22 inlet is a sealing 14 that seals the inner diameter surface of the bottleneck 22 inlet.

The male lifting mold 130 having the configuration as described above has an upper surface of the male lifting core 134 and an upper surface of the male fixing core 122 accommodated inside the receiving groove 134a in the same horizontal plane and are female. After the female mold 110 is raised in a state in which the bottle cap 10 is formed through a space formed with the mold 110 or at the same time as the female mold 110 is raised, the male lifting mold 130 is accommodated. The length of the male fixing core 122 of the male fixing mold 120 is lowered from the bottom surface of the groove 134a so as to demould the bottle cap 10 formed from the male fixing core 122.

The fixed support disc 140 constituting the injection molding machine 100 for the bottle cap according to the present invention supports the lower portion of the male elevating die 130 to form the bottle cap 10 to be molded. As such, the fixed support disc 140 is fixed on the outer circumferential surface of the elevating rod 132 of the male elevating die 130, as shown in Figures 1 to 3 while the male elevating die 130 through the top surface Supporting the lower surface of the male elevating core 134 of the) to ensure that the male fixed core 122 and the male elevating core 134 upper surface is located on the same horizontal line to form the inner shape of the bottle cap 10 to be molded Made of structure.

The fixed support disc 140 configured as described above is fixed on the outer circumferential surface of the elevating rod 132 of the male elevating die 130, but the fixed supporting disc 140 is of the male elevating die 130. It means that the lifting rod 132 is positioned on the outer circumferential surface and is fixed without being lifted up and down in that state. That is, it is irrelevant that the fixed support disk 140 is fixed on the lifting rod 132 outer circumferential surface of the male lifting mold 130 and the male lifting mold 130 is lifted up and down. Therefore, even if the fixed support disc 140 is fixed on the lifting rod 132 outer circumferential surface of the male lifting die 130, no interference occurs with the lifting rod 132 of the male lifting die 130. .

Meanwhile, the fixed support disc 140 as described above supports the male elevating core 134 of the male elevating die 130 through the upper end thereof so that the upper surface of the male elevating core 134 is male fixed core 122. While maintaining the same horizontal line as the upper end of the upper surface, while supporting the elevating demoulding plate 150 to be described later through the support jaw 142 formed on the outer circumferential surface of the fixed support disc 140, the elevating demolding plate 150 The bottom surface of the female mold 110 through the surface is supported, the female mold 110, male fixed mold 120, male lifting mold 130, the fixed support disk 140 and the lifting demolding plate 150 ) To make the molding space.

The outer circumferential surface of the fixed support disk 140 configured as described above is formed so that the diameter of the outer circumferential surface of the upper side is smaller than the diameter of the outer circumferential surface of the lower side so that the support jaw 142 is formed on the boundary surface. At this time, the outer peripheral surface of the fixed support disk 140 of the upper side of the support jaw 142 is made of a structure that gradually extends from the upper side to the lower side. In this way, the support jaw 142 and the lifting jaw release plate 150, which will be described later that the outer peripheral surface of the fixed support disc 140 of the upper side of the support jaw 142 is gradually expanded from the upper side to the upper side of the support jaw 142. The purpose of this is to support the lifting and lowering.

Lifting and demolding plate 150 constituting the injection molding machine 100 for the bottle cap according to the present invention supports the female molding die 110, while lifting the bottle cap 10 formed through the male lifting mold 130 From the demoulding, the elevating demoulding plate 150 is coupled to the elevating on the outer peripheral surface of the fixed support disk 140, the upper side of the support jaw 142 formed on the outer surface of the fixed support disk 140, female through the upper surface It is made of a structure for supporting the bottom surface of the mold 110.

As described above, the lower end surface of the female mold 110 is coupled to the upper and lower surfaces of the female support mold 140 through an upper surface thereof by being coupled to the upper and lower surfaces of the fixed support disk 140 formed on the outer surface of the fixed support disk 140. The lifting demoulding plate 150 of the supporting structure supports the bottom surface of the female mold 110 through the top surface of the female mold 110 and the male fixed mold 120 and the male lift mold 130). While maintaining the upper and lower intervals of the molded bottle cap 10 through the upward upward demold from the male lifting mold 130.

On the other hand, the center of the elevating demolding plate 150 configured as described above is expanded to the lower portion corresponding to the outer peripheral surface of the upper side of the support jaw 142 of the fixed support disk 140 as described above It is formed and coupled to the outer peripheral surface of the upper side of the support jaw 142 of the fixed support disc 140 so as to be elevated. As such, the expansion hole 152 having a structure extending from the top to the bottom may be formed to facilitate the coupling of the lifting release plate 150 on the outer circumferential surface of the upper side of the support jaw 142 of the fixed support disc 140. Of course, it is possible to prevent the interference with the fixed support disk 140 during the lifting of the lifting release plate 150.

The lifting demoulding plate 150 configured as described above lifts the bottle cap 10 demolded from the male fixed mold 120 by the lifting of the male lifting mold 130 when demolding the molded bottle cap 10. Completely demold the bottle cap 10 formed from the male lifting mold 130 through. At this time, in order to demold the bottle cap 10 formed from the male elevating die 130 through the lifting of the elevating die 150, the bottle cap 10 formed on the top surface of the elevating demolding plate 150. Support should be made.

Therefore, in the present invention, as shown in FIGS. 1 to 3, the inner upper surface of the elevating demolding plate 150 may be supported so that the lower surface of the bottle cap 10 formed on the upper surface of the elevating demolding plate 150 may be supported. The lower surface of the bottle cap 10 to be protruded inward than the inner surface of the lower surface of the female mold 110 to be supported on the inner upper surface of the lifting release plate 150.

The injection molding machine 100 for a bottle cap according to the present invention is the female mold 110, male fixed mold 120, male elevating mold 130, the fixed support disc 140 and lifting and demoulding as described above In addition to the configuration of the plate 150, the bottle cap 10, which is fastened to the bottleneck 22, is separated between the male lifting mold 130 and the fixed support disc 140 from the bottleneck 22. Lip forming means for forming a lip (Lip: 16) that functions as a stopper is further configured to support the neck fixing member 12 to be formed in the bottle neck 22.

As described above, the lip forming means for forming the lip 16 is integrally protruded from the outer lower end of the male elevating core 134 as shown in FIGS. 1 to 3, but has an inner diameter for forming the lip undercut 160a. ) Is formed on the top of the female lip forming unit 160, the fixed support disk 140, the lifting rod 132 outer peripheral surface of the male elevating die 130 and the male elevating core 134 lower surface and female lip forming unit 160 ) Is formed in the shape of forming the lip shaping portion 160 of the male lip shaping portion 160 is formed of a male lip shaping portion 162 formed opposite the lip shaping undercut (162a).

Meanwhile, as described above, the lip 16 formed by the lip shaping undercut 160a of the female lip shaping part 160 and the lip shaping undercut 162a of the male lip shaping part 162 is a female shaping mold ( 110), male fixed mold 120, male lifting mold 130, the fixed support disk 140 and the lifting mold to be molded integrally to the bottom of the bottle cap 10 formed by the lifting plate 150 A gap must be formed between the lip shaping undercut 160a of the lip shaping part 160 and the lip shaping undercut 162a of the male lip shaping part 162. In addition, the lower lip forming undercut 162a of the male lip forming part 162 has a male lip as shown in FIGS. A gap jaw 162b was formed at the lower end of the lip shaping undercut 162a of the shaping part 162 so as to form a gap between the shaping part 162 and the bottom face of the female lip shaping part 160.

As shown in FIG. 2, the lip 16 formed through the lip forming means having the structure as described above is formed by the lip forming undercut 160a of the female lip forming part 160 and the male lip forming part 162. Molding is made in a state bent inward, such as a lip molding groove between the lip molding undercut (162a), and when the mold is demolded through the demolding process of Figures 3a to 3d (3d and 4b) The demoulding is carried out in a state of being unfolded outward of the lower part of 10). Of course, when the molded bottle cap 10 is fastened to the bottleneck 22 of the bottle 20, as shown in FIG. 5, the lip 16 is fastened in a state of being bent into the inside of the bottle cap 10. Lose.

In other words, the lip (16) formed at the bottom of the bottle cap 10 by the lip forming means as described above is formed at the inner center from the bottom of the bottle cap 10 formed at the time of molding the bottle cap 10. While being molded upward, when the molded bottle cap 10 is demolded from the lower end of the bottle cap 10 through the pressure due to the demold of the lifting demold 150 and the catch by the lower end of the female lip forming unit 160. It spreads downward of the inner center.

In addition, in the configuration of the lip forming means configured as described above, the face of the lip forming undercuts 160a and 162a formed to face each of the female lip forming part 160 and the male lip forming part 162 correspond to each other in male and female. Concave-convex 164 is further formed. The lip 16 formed by the triangular irregularities 164 formed as described above is formed with a triangular irregularities surface 16a to form a corrugated state.

Deformation of the molded bottle cap 10 by forming a triangular concave-convex surface 16a in a corrugated state is formed on the lip 16 formed at the bottom of the bottle cap 10 by the concavo-convex 164 of the triangular shape as described above. Alternatively, when the molded bottle cap 10 is fastened to the bottleneck 22 of the bottle 20, the lip 16 is easily displaced downwardly or upwardly by the unfolding of the corrugated triangular uneven surface 16a. Make it wander about.

Referring to the molding of the bottle cap 10 and the demolding process of the molded bottle cap 10 through the injection molding machine 100 for the bottle cap according to the present invention configured as described above are as follows. First, as shown in Figure 1 four as shown in the preparation process of the injection molding machine 100 for the bottle cap for molding the bottle cap 10 lifted demoulding plate 140 to the upper surface of the support jaw 142 of the fixed support disk 140 After lowering the support), the male elevating die 130 is lowered so that the bottom surface thereof is supported by the upper surface of the elevating release plate 150 so that the male fixing core 122 and the male elevating core 134 are supported. The upper surface is positioned on the same horizontal line, and in this state, the female mold 110 is lowered so that the lower surface thereof is supported on the upper surface of the elevating release plate 150 to form the shape of the bottle cap to be molded. The molding space to be formed by the female mold 110, male fixed mold 120, male elevating mold 130, the fixed support disk 140, the lifting release plate 150 and the lip forming means.

On the other hand, as described above to mold through the female mold 110, male fixed mold 120, male elevating mold 130, fixed support disk 140, elevating release plate 150 and lip forming means After the molding space is formed to form the shape of the bottle cap to be injected into the molten resin through the gate hole 114 of the female molding die 110 as shown in Figure 2 through the solidification of the female molding mold ( 110, the bottle fixing mold 120, the male lifting mold 130, the fixed support disk 140, the lifting release plate 150 and the bottle cap of the same shape as the molding space formed by the lip forming means (10) ).

After molding the bottle cap 10 through the solidification of the injected molten resin as shown in FIG. 2 above, a demoulding process takes place. As shown in FIG. 3A, the female mold 110 is raised or raised. Simultaneously with the rise of 110, the bottle lid 10 formed by raising the male lifting mold 130 as shown in FIG. 3B is a female mold 110 or a female mold 110 and a male fixed core 122. To demould. At this time, in Figures 3a and 3b for convenience, the female mold 110 is raised first, the male lifting mold 130 is shown to rise, as described above, the male lifting mold after lifting the male mold 110 as described above The rise of the mold 130 may be configured, or may be configured such that the male lifting mold 130 can be raised at the same time as the rise of the female mold 110. In the present invention is configured to be raised in the male elevating mold 130 at the same time as the rise of the female mold (110).

3A and 3B, the bottle cap 10 is lifted from the female mold 110 and the male fixed core 122 by raising the male lifting mold 130 at the same time as the female mold 110 is raised. In the process of demolding, the lip 16 formed at the bottom of the bottle cap 10 is also demolded from the male lip forming part 162 of the top of the fixed support disc 140. Of course, the molded lip 16 is not demolded from the female lip forming part 160.

On the other hand, at the same time as the rise of the female mold 110 as described above, the male lifting mold 130 is formed to form the bottle cap 10 is molded from the female mold 110 and male fixed core 122 In the process of making the male lifting die 130 is raised by the length between the bottom surface of the male fixing core 122 and the bottom surface of the receiving groove 134a of the male lifting core 134, female mold 110 ) Rises above the combined length of the male lifting die 130 and the lifting lifting plate 150. Substantially, the lifting length of the female mold 110 is demolished from the male elevating core 134 by the elevating elevating release plate 150 and of the bottle cap 10 supported on the upper surface of the elevating release plate 150. It will rise above the top surface.

Subsequently, as described above, the bottle lid 10 formed by raising the male lifting mold 130 as shown in FIG. 3B simultaneously with the raising of the female mold 110 as shown in FIGS. 3A and 3B is formed in the female mold. After the mold 110 is demolded from the male and the fixed core 122, the bottle cap 10 in a state of being supported by the male elevating die 130 by gradually elevating the elevating release plate 150 as shown in FIG. 3C. ) To be released from the male lifting mold 130.

As shown in FIG. 3C, the molded bottle cap 10 in a state of being supported on the male elevating die 130 by gradually elevating the elevating release plate 150 is gradually formed from the male elevating die 130. The lip 16 formed in the process of demolding is also demolded from the female lip forming unit 160 while being flipped outward of the lower portion of the bottle cap 10 as shown in FIGS. 3C and 3D. When the maximum height is raised, the eventually formed bottle cap 10 is supported on the top surface of the elevating release plate 150 as shown in FIG. 3D. Removing the molded bottle cap 10 in this state from the injection molding machine 110 for the bottle cap, one bottle cap 10 is manufactured.

Meanwhile, in order to mold the bottle cap 10 again, as described above, the lifting release plate 150, the male lifting mold 130, and the female molding die 110 are sequentially lowered to prepare for molding the bottle cap 10. After returning to the process, the molding and demoulding of the bottle cap 10 is made continuously.

As described above, the bottle cap 10 finally manufactured through the molding preparation process, the molding process, and the demolding process as shown in FIGS. 2 and 3 is as shown in FIG. 4. As such, when the bottle cap 10 is finally filled as shown in FIG. 4 to seal the bottleneck 22 by filling the inside of the bottle 20 with the contents of the bottle cap 10 as shown in FIG. 5 ( 14 is tightly inserted into the inlet inner peripheral surface of the bottleneck 22 to seal the inlet of the bottleneck 22, the lip 16 of the bottom of the bottle cap 10 is bent inward upward of the bottle cap (10) bottleneck ( It is caught on the locking step 24 formed in 22. In this state, when rotating in the direction of separating the bottle cap 10 is made of the incision of the horizontal incision line 18 in the state that the lip 16 is hanging on the locking jaw 24, the bottom of the bottle cap 10 Only the neck fixing member 12 constituting the remaining by the stopper function of the lip 16 hanging on the locking jaw 24 of the bottle neck 220, only the bottle cap of the upper neck fixing member 12 is separated.

As described above, the bottle injection molding machine 100 according to the present invention is closely inserted into the inlet inner circumferential surface of the bottleneck 22 to seal the entrance of the bottleneck 22 with an undercut seal 14 and the bottleneck 22 inlet. When the bottle cap 10 is fastened to the outer circumferential surface of the bottle from the bottleneck 22 of the bottle 20, the neck fixing member 12 of the bottle cap 10 is supported by the stopper 22 so as to support the bottleneck 22. Lip (16) is able to manufacture the bottle cap 10 of the integrally molded structure.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

1 is a cross-sectional view showing an injection molding machine for a bottle cap according to the present invention.

Figure 2 is a cross-sectional view showing the molding of the bottle cap by the injection molding machine for a bottle cap according to the present invention.

Figure 3a is a first action showing the action for demolding the bottle cap molded through the injection molding machine for the bottle cap according to the present invention.

Figure 3b is a second action showing the action for demolding the bottle cap molded through the injection molding machine for the bottle cap according to the present invention.

Figure 3c is a third action showing the action for demolding the bottle cap molded through the injection molding machine for the bottle cap according to the present invention.

Figure 3d is a fourth action showing the action for demolding the bottle cap molded through the injection molding machine for the bottle cap according to the present invention.

Figure 4 is a cross-sectional view showing a bottle cap molded through an injection molding machine for a bottle cap according to the present invention.

Figure 5 is a cross-sectional view showing a state in which the bottle cap coupled to the bottle neck formed through the injection molding machine for the bottle cap according to the present invention.

[Explanation of symbols for the main parts of the drawing]

10. Bottle cap 12. Neck fixing member

14. Sealing 14a. Outer diameter sealing

16. Lip 16a. Uneven surface

18. Horizontal incision line 20. Bottle

22. Bottlenecks 24. Jaws

100. Injection Molding Machine for Bottle Cap 110. Female Mold

112. Molding groove 120. Male fixed mold

122. Male fixed core 122a, 134b. Undercut for Sealing Molding

124. Fixed Rod 130. Male lifting mold

132. Lifting rod 134. Male lifting core

140. Fixed support disc 142. Supporting jaw

150. Lifting and demolding plate 160. Female lip forming part

162. Male lip molding 160a, 162a. Undercut for Lip Molding

162b. Gap 164. Unevenness

Claims (11)

A female molding groove having a female molding groove corresponding to the outer shape of the bottle cap is formed on the lower inner surface thereof, and having a gate hole for injecting molten resin in the center of the upper surface thereof so as to be elevated; The male fixing core is located inside the molding groove of the female mold and has a diameter corresponding to the inner diameter of the bottleneck, and has a male fixed core having an undercut for sealing molding formed at an upper side edge thereof, and the male fixed core at the center of the lower surface of the male fixed core. Male fixed mold consisting of a fixed rod formed in a predetermined length with a smaller diameter than; The lifting rod of a predetermined length coupled to the lifting rod outer circumferential surface of the male fixing mold and the thickness of the male fixing core are formed in a deep receiving groove, but the upper end of the inner diameter surface of the receiving groove has A male-shaped lifting mold formed with a male-shaped sealing core having a spiral-shaped groove formed on the outer circumferential surface of the groove-shaped sealing molding undercut corresponding to the sealing-cut undercut, and forming an inner mold of the bottle cap together with the male fixing mold; Positioned on the outer circumferential surface of the elevating rod of the male elevating die, but supporting the male elevating core lower surface of the male elevating die through the top surface so that the male fixed core and the male elevating core upper surface is located on the same horizontal line Meanwhile, at one side of the outer circumferential surface, a fixed support disc having a support jaw formed therein; And The support jaw is coupled to the liftable support disk on the outer peripheral surface of the upper support jaw to support the lower surface of the female molding die through the upper surface of the male molding frame (male fixing mold and male lifting mold) An injection molding machine for bottle caps, comprising a lifting and lowering die plate for demolding the bottle cap molded from the male lifting mold while maintaining the vertical gap therebetween. According to claim 1, wherein when the molding of the bottle cap is lowered the elevating deformed plate in the state to be supported on the upper surface of the support jaw of the fixed support disc to lower the male elevating die to lower the lower surface of the elevating The upper surface of the male fixed core and the male elevating core are positioned on the same horizontal line, and then the female mold is lowered so that the lower surface thereof is supported on the upper surface of the elevating release plate. In one structure, the molten resin is injected through the gate hole of the female mold to allow molding to be carried out, while the molded bottle cap is demolished while the female mold is raised or the female mold is raised. At the same time, the male elevating mold is raised to deform the female mold and the male mold from the molded bottle cap. An injection molding machine for a bottle cap, wherein the lifting and lowering plate is raised in a shape so that the molded bottle cap can be demolded from the male lifting mold. 3. The bottle cap according to claim 2, wherein the lifting length of the male lifting mold is lifted by a length between the bottom surface of the male fixing core of the male fixing mold from the bottom of the receiving groove of the male lifting mold. Injection molding machine. 4. The injection molding machine for a bottle cap according to claim 3, wherein the lifting length of the female mold is elevated above the combined lifting length of the male lifting mold and the lifting release plate. The method according to claim 4, wherein the undercut for sealing molding between the male fixed mold and the male elevating mold is a certain length is inserted into the inlet of the bottle when the molded bottle cap is coupled to the bottleneck of the bottle through close contact with the inner diameter surface Injection molding machine for a bottle cap, characterized in that for molding the sealing so that the bottleneck can be sealed. The sealing cut undercut between the male fixed mold and the male elevating mold is formed so that the structure of the sealing is formed so as to go outward toward the bottom and rounded inward toward the end. Is formed so that interference does not occur when the sealing is inserted into the inlet of the bottleneck while the molded bottle cap is in close contact with the inner diameter surface of the bottleneck by the elastic force to open the sealing when the bottle cap is coupled to the inlet of the bottleneck Injection molding machine for a bottle cap, characterized in that. The neck fixing member according to any one of claims 1 to 6, wherein a neck fixing member is formed between the male lifting mold and the fixed support disc to form a lower bottle cap when the bottle cap is fastened to the bottleneck. An injection molding machine for a bottle cap, characterized in that the lip forming means for forming a lip (lip) that functions as a stopper to be supported. The method of claim 7, wherein the lip forming means is a female lip forming part is formed integrally projecting on the outer lower end of the male elevating core, the lip forming undercut is formed in the inner diameter; The top of the fixed support disk is formed in the form of the lifting rod outer circumferential surface of the male elevating die frame and the male elevating core lower surface and the female lip forming portion, but the surface corresponding to the lip forming undercut of the female lip forming portion for lip molding Injection molding machine for a bottle cap, characterized in that the undercut is made of a male-shaped lip molding formed facing away. The method of claim 8, wherein the lip (Lip) is formed on the bottom of the bottle cap by the lip forming means is molded from the bottom of the inner center from the bottom of the bottle when the molding of the bottle, while the molded When the bottle cap is demolded, the injection molding machine for the bottle cap is spread out downward from the bottom of the inner center of the bottle cap through the pressurization according to the demold of the elevating demold plate and the catch by the lower end of the female lip forming unit. . 10. The method of claim 9, wherein the shape of the lip molding undercut formed opposite to each of the female lip forming portion and the male lip forming portion is formed in the form of triangular irregularities corresponding to each other male and female smoothly demolding the molded bottle cap Injection molding machine for a bottle cap, characterized in that made to be made. 11. The bottle cap according to claim 10, wherein an outer diameter sealing molding groove is further formed on an upper surface of the male elevating core of the male elevating mold to form an outer diameter sealing that is in close contact with an outer diameter surface of the bottleneck inlet side of the bottle. Injection molding machine.

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