KR101213663B1 - Injection molded ejecting device type - Google Patents

Abstract

PURPOSE: A device for ejecting a molded article for an injection mold is provided with a reduced weight as an ejection plate is operated by the operation of a movable die. CONSTITUTION: A device for ejecting a molded article for an injection mold comprises an ejection plate(30) and a connecting rod(40). The ejection plate is sealed from the outside, and movably installed inside a fixed mold(10). The ejection plate comprises ejection pins(31). A parting lock(25) is integrally connected to the ejection plate by parting bolts(36). The connecting rod is installed in a movable die(20) engaged with the fixed mold, and moves as much as the gap between the molds. The connecting rod comprises a parting socket(45) and an ejection block(41). The parting socket is connected to the parting lock which is integrally connected to the ejection plate.

Description

Injection molded ejecting device type of injection mold

The present invention is configured to be immersed in the fixed mold inside the fixed mold so that the injection molding can be safely removed in sequence in a multi-step after opening the injection mold, and the injection plate is configured to operate in the operation of the movable mold Minimize the overall thickness of the publication to reduce the weight, to prevent foreign substances from pinching the pin stroke space of the ejection plate, and to minimize the reduction of the assembly parts, processing and assembly labor by not forming a separate ejection rod, deformation of the injection molding The present invention relates to an injection mold ejection apparatus of an injection mold, which can reduce cost and reduce cost by improving defects and improving quality.

In general, injection molding is a molding process of plastics, which forms the center of a method of molding thermoplastic resins. The process is first performed in plastics with pigments, stabilizers, plasticizers, fillers, and the like. After adding the compound to the molten state, it is injected into the mold (金 型) through the inlet with a piston to form a plastic product.

Such injection molding forms a molding mold that interlocks a material such as a PP-board (polypropylene board) such that the stationary mold and the movable mold are separated from each other, and forms a molding space therebetween. The injection liquid is injected, cooled and molded, and then the movable mold is opened to remove the injection product from the molding mold and removed. Such an injection molding is usually in close contact with the molding mold when the movable mold is opened from the fixed mold.

Therefore, the injection mold is installed in the fixed mold in order to take out the injection molding from the mold, when the opening of the mold when the extraction pin pushes the injection to remove the injection, wherein the take-off rod constituting the separate striking structure The ejection pin is configured to push the ejection instantaneously by hitting the ejection plate consisting of the ejection pin, the prior art that has been variously developed as an ejection ejection device of such an injection mold as follows.

Patent Application No. 10-1997-026511 (1997.06.23) relates to an injection molding die which can be easily detached core and leaves no pinch marks on the molded article, and the fixed side mounting plate is connected to the fixed side template to fix it. The sprue is connected to the fixed side mounting plate, and the movable side plate is connected to the space block, the upper plate bottom plate and the movable side mounting plate to form the movable side, and a molded part is formed on the movable side plate. The core is mounted, and the supporting block having the same width as that of the molding part is installed to be liftable under the molding part inside the core, and the supporting block is fixedly connected to the extraction rod by the extraction bolt. It is fixedly connected to the lifting and lowering plate by the rod. Patent Application No. 10-1999-0051831 (1999.11.22) is a process for molding an injection molded product into an injection mold; A step of slightly opening the gap of the injection mold while releasing the press pressure of the one side mold; Injecting air into the molding surface of one injection mold (mold on the surface of the injection molding) to separate the entire surface of the injection molding product from the molding surface by pneumatic pressure so as to be in close contact with the opposite mold (mould having a push pin); The process of removing the injection products with the push pin while the upper and lower injection molds are fully opened is performed in order.The removal of the injection parts is quick and easy, so there is no fear of deformation of the injection products, which reduces the incidence of defects and improves the quality. In the case of automobile interior materials, the cost reduction effect by productivity improvement is great. Patent application No. 10-2002-0016404 (2002.03.26) unifies the ejecting plate to reduce the weight by minimizing the overall thickness of the plate, and the injection mold that can minimize the shrinkage, processing and assembly of related assembly parts In order to provide an ejecting apparatus for ejecting, the ejecting plate for ejecting a molded article formed by the movable plate and the corresponding stationary plate from the inside of the space block for mounting the movable plate having the molding surface of the product at the bottom In the ejection apparatus of the injection mold provided on the upper surface, the ejecting plate is installed on the upper portion with an auxiliary plate at the bottom in the inner space of the space block, it is composed of a single body on the auxiliary plate, An ejecting pin on the ejecting plate, for ejecting the molded product after molding the product; A return pin for completely returning the ejecting plate upon opening and closing of the mold; It provides an ejecting device of the injection mold, characterized in that the ejecting guide pin for guiding the ejector plate during ejection is installed in each position. Patent application No. 10-2002-0021151 (2002.04.18) is to prevent the deformation of the member forming the locking jaw of the injection molding to accurately mold the locking jaw while at the same time the operation of the mold is accurate and the ejection of the injection is performed smoothly It is to provide a mold apparatus for molding and taking out the injection molding having a locking jaw to obtain a high-quality injection molding and improve the durability of the mold, the locking jaw forming and taking out means is formed in the bottom mounting portion A plurality of takeout members which are inclined in a diagonal direction and have a locking step forming part formed at an upper end thereof so as to be elevated on an inner side of the lower die plate; and an elastic member installed on the lower die plate so that downward elastic force is applied to each of the takeout members. It is configured to include. Patent application No. 10-2003-0055459 (August 11, 2003) is a product ejection structure of a plastic injection mold apparatus, is inserted into the movable side insert to be slidable in a predetermined length in the axial direction, the upper surface of which is part of the mold cavity Forming work piece; An elastic member interposed between the operating piece and the movable side mounting plate to elastically support the operating piece; And a core slidably coupled to a center of the working piece and fixed to the movable side mounting plate, the upper surface of which forms a part of the mold cavity, wherein the elastic member when the movable die is retracted from the fixed die. With the elastic force of the advancing the working piece is to leave the product. Patent application No. 10-2005-0011291 (2005.02.07) relates to a discharge device that can be used even if a lot of force is required for discharging the molding because the area in which the molding is in contact with the core and the core pin. In the injection mold having an upper mold and a lower mold that is formed for molding and can be separated from each other, the injection mold is formed so as to move up and down along the molding space formed in the lower core inside the lower core coupled to the lower mold. An ejector pillar having the same cross-sectional shape as the cross section of the molding space, and one end is coupled to the ejector pillar and the other end is composed of an ejector bolt coupled to the ejector plate. Patent application No. 10-2005-0015773 (2005.02.25) is to facilitate the extraction in the state that the injection molding rib or protrusion projected to the injection body is completed by the mold apparatus to improve the workability and productivity and improve the quality It is to provide a mold apparatus having a function of preventing the ejection of one of the injection molding, the hole is formed on the lower plate and the fixed plate corresponding to the bottom so that each mill pin formed with the groove is flowable; On the hole part of the fixing plate, the push pin formed with the groove portion is inserted into the lower portion of the rod and the bottom of the pressure piece so that the elastic pin is raised by a distance smaller than the rising distance of the upper and lower wheat plates at the time of ejection of the injection molded product. The holder member is formed so that the elastic member, the cylinder hole to which the pressing piece and the elastic member are installed are coupled to the fixed plate, and the pressing member and the elastic member inserted into the cylinder hole on the holder member are prevented from falling down. Protruding portion extraction device is composed of a fixed bolt fastened to the. Patent application No. 10-2006-0098123 (October 09, 2006) is a double injection mold comprising a primary mold comprising an upper mold installed on a movable disc and a lower mold installed on a stationary disc, wherein at least two of them are operated by a gas spring. Four ejection molds are installed side by side in the lower mold to form a cavity of the primary molded product by the ejection mold and the upper / lower mold, and the size of the cavity is adjustable by simultaneous operation of the upper mold and the ejection mold. On the other hand, after the completion of the molding of the primary molded product in the cavity, at the same time as the upper mold is raised and the take-out mold is configured to push both sides of the primary molded product to be attached to the upper mold. Patent application No. 10-2007-0034895 (2007.04.10) relates to a scrap separation device for separating the scrap formed during the injection molding, the disk gate is formed on the lower end of the gate for introducing the resin into the injection mold And a tension spring at the upper end of the disk gate, as well as a tapered guide groove on the inner side of the upper mold, and a supporting rod drawn in and out along the guide groove, thereby injection molding and the disk gate being lowered. In order to provide the scrap separation device of the injection mold that does not burden the equipment cost by a simple configuration as well as to improve the work efficiency and productivity by automatically separating the scrap of the injection molding, the upper mold with a molded part in which the injection molded product is formed A sprue which is positioned at an inner upper end of the injection resin and is introduced therein; A disk gate inserted into an upper circumferential side of the sprue and allowing the injection resin to be evenly distributed to the molding part; A tension portion for contacting an upper end of the disk gate and an upper part fixed to an inner side of a lower end of the upper mold to separate the scrap by a disk gate lowered by lowering the disk gate by an expansion force; An elevating portion extending toward a lower end of the disc gate to support a lower portion of the disc gate and having an indent groove tapered inwardly; The disc gate is lowered during the lowering of the elevating unit by inducing the entry / exit into the inlet / outlet of the elevating unit but having a tapered surface having the same inclination angle as the tapered shape of the elevating groove of the elevating unit. And a guide portion for allowing the disc gate to rise when the lifting portion is raised. Patent application No. 10-2010-0028438 (2010.03.30) can ensure the continuity of product production work without stopping the operation of the mold during the injection molding work of the worm using the mold, It relates to a worm injection mold ejection device that can be applied in various ways, the worm core is provided with a worm core inside the movable side mold directly below the resin inlet formed in the same direction as the sprue inside the fixed side mold in communication with the sprue In the worm injection mold in which the cavity is formed between the mold and the fixed side mold, the worm core is included therein, the rotation shaft is integrally formed on the other side of the worm core, and the pinhole penetrates the inner center including the rotation shaft. A turning core; A spindle having one end fixed in parallel to the eject pin and having a spiral formed on an outer surface thereof on a ejection plate that supports the eject pin of the movable mold inserted into the pin hole of the turning core; A drive gear including a spindle support nut spirally coupled to the spindle and provided inside the mold on the movable side to be rotatable by a bearing; And a driven gear that is engaged in the horizontal direction with the prime mover and coupled to the rotating shaft of the turning core to receive the rotational force from the prime mover to rotate the turning core in the opposite direction of the prime mover. Application No. 10-2010-0056961 (2010.06.16) is a means for taking out the finished product from the injection mold, the main mill pin and the sub-mill pin to move up and down with different strokes while operating in conjunction with each other when taking out the product The main mill pin is connected to the shaft of the actuator is coupled to the pin pin fixed block and the pin pin movable block capable of raising and lowering, the sub-mil pin is installed in the space formed in the lower portion of the lower mold pin pin fixed block and It is coupled to the sub-mil pin fixed block and the sub-mil pin movable block which can be raised and lowered by a spring while being connected to the operation of the mil pin operating block, and as a means for the cooperative operation of the main mil pin and the sub mil pin, the sub-mil pin fixed block and The upper part is fastened to the sub-mil pin movable block and penetrates the pin pin fixed block and the mill pin movable block, It further includes a take-out rod that is hanging portion. Utility Model Registration Application No. 20-1997-008849 (April 26, 1997) discloses an injection mold composed of an upper mold and a lower mold for taking out a molded article including an undercut portion. A first core plate installed on the upper side, an inclined rod supported by the first core plate and forming an inclined surface at one end thereof and moving in the mold opening and closing direction, and installed in contact with the inclined surface of the inclined rod, An ejector core which moves inward and descends to one side and protrudes laterally to form an undercut portion of a molded article, a spring installed on the side of the ejector core to elastically support the ejector core, and the first core plate is moved up and down. One side is supported by the reinforcement plate and the other side is composed of a hydraulic cylinder supported on the first core plate so that the upper and lower molds can be opened. The undercut portion of the molded article can be taken out. Utility Model Registration Application No. 20-1997-0014193 (1997.06.03) is an injection mold product take-out apparatus, the upper mold is a fixing plate having a sprue bush, the upper stripper plate provided below the fixing plate, A fixed side template provided below the upper stripper plate and having a cavity formed therein; The lower mold includes a lower stripper plate having a core hole through which the core can pass and a locking bush provided on one side, a movable side template provided below the lower stripper plate, and a core provided inside the movable side template. And a space block provided on both sides of the lower side of the movable side template and having a hole for guiding a support pin on one side thereof, and a movable plate supporting the lower side of the space block. A support pin is supported on the fixing plate and formed with different thicknesses of upper and lower parts, and an end of the upper part is supported by the fixing plate on the opposite side to which the support pin is installed, and has a stop bolt formed with different thicknesses of upper and lower parts. The lower stripper plate pushes out the injection molded product. Utility Model Registration Application No. 20-1997-0028373 (1997.10.13) relates to a product taking-out device of an injection molding die, which is a moving mold having a large specific surface area in an injection molding die having upper and lower molds installed therein. An elastic means is formed on the outside of the core formed at a predetermined portion of the core to receive the elastic force of the elastic means, and a protrusion is formed in front of the jungle to protrude the hole forming portion for processing the product hole. The stiffness of the core part, which is subjected to the elastic force, pushes the product out of the moving mold with a large specific surface area. Utility Model Registration Application No. 20-1997-0036134 (August 12, 1997) relates to an ejector block of a injection metal mold, which has many irregularities on the surface of the product manufactured by the injection mold. In order to make it easy to escape from the inside of the mold and to shorten the ejection cycle, the injection molded product is supported on the upper side of the injection molded product and can be lifted on the same line to coincide with the movable core pin. The fixed side core pin and the fixed side core pin is provided downwardly coupled to the upper side and the ejector block consisting of a lower ejector and an upper ejector so as to be supported by the elastic spring on the lower side and the fixed side is formed so that the ejector block is elevated Resilient installation on the core and the upper side of the ejector block to lower the ejector block from the fixed side plate The elastic consists of a spring and an ejector block which is elevated by the elastic supporting ttaran elastic spring in the lifting of the movable side core relates to an ejector block of the injection mold so that the deviation given pushing the fixed side core pins are molded product for which a Tangier. Utility Model Registration Application No. 20-1997-0039860 (December 23, 1997) relates to the ejecting structure of an injection mold for ejecting by supplying air, and the structure of a mold in which a mill pin installed on the movable mold of the injection mold is ejected. In the movable plate below, the hole is drilled to insert an air tube, and the inside of the mill pin is formed at the upper predetermined position so as to be connected to the hole at the position where the pin is installed, and then the mill pin insertion hole is formed in the mill pin insertion hole. The installation of the spring pinned mill pin, but the bulge tube of the air tube is to support the bottom plate of the mill pin so that the mill pin is reversed by the air supply. Utility Model Application No. 20-2000-0018320 (2000.06.27) forms a detachable auxiliary plate into the mold to force separation of the injection molding from the inside of the mold. In order to provide an injection molding separation structure of an injection mold for writing instruments that can be improved, a molding plate having a cavity capable of molding a plurality of injection moldings is positioned between the movable mold and the fixed mold, and core pins are installed to be accommodated in the mold. In the injection molding tool for writing instruments, the upper surface of the movable mold to form a removable auxiliary plate that is rotated by the cylinder in the state of receiving the core pin through the receiving hole, the removable auxiliary plate in conjunction with the retraction of the core pin to the top By developing, the injection molding structure of the injection mold for writing instruments configured to force separation of the injection molding from the core pin, Is achieved. Utility Model Registration Application No. 20-2006-0002417 (January 26, 2006) relates to a two-stage working compact plate of an injection mold, in which a stepped diameter larger than the upper part is formed at the center thereof, and the stepped step is penetrated by the movable side mounting plate. An ejector rod to be installed, a first mill plate directly connected to the upper end of the ejector rod, a second mill plate through which the upper part of the ejector rod penetrates and having a predetermined distance from a step when the ejector rod is lowered, and installed on the first mill plate, the gate and the runner It is composed of a first mill pin to push the, and a second mill pin installed on the second mill plate to push the molded product, the runner and the gate are first taken out and the molded product is taken out to prevent breakage of the molded product.

The present invention is to solve the problems of the prior art, the blower plate is configured to operate by the movable mold inside the fixed mold to minimize the overall thickness of the blower plate to reduce the weight, foreign matter in the pin stroke space of the blower plate Injection mold that prevents jamming, does not constitute separate blowout rod, minimizes the reduction of assembly parts, processing and assembling work, and prevents deformation of the injection molding, reducing defects and improving quality through cost reduction It is aimed at constructing an injection ejection apparatus.

The present invention for achieving the above object, the injection molding of the injection mold consisting of a fixed mold integrally fixed to the injection molding machine, and a movable mold coupled to the ram of the injection molding machine to be combined with the fixed mold to be coupled and separated operation. In configuring the device,

The take-off plate having the take-out pin formed inside the stationary mold is sealed to the outside to be movable, and the parting lock is integrally coupled to the take-out plate with a parting bolt, and the fixed mold is movable to the stationary mold. The parting socket and the parting bar coupled to the parting block coupled to the parting plate of the mold are configured to flow by the mold separation gap, so that the parting socket of the parting rod formed in the movable mold is formed on the parting plate of the fixed mold. It is coupled to the lock and configured to operate the takeout pin by dragging the takeout plate.

Here, the fixed mold is formed by coupling and fixing at least one or more take-out pins integrally with a pin plate, and the take-out plate formed by combining at least one pair of parting locks with parting bolts so as to be symmetrical with the center, and injection molding on the front surface The fixed mold-forming plate and the fixed mold-forming plate are integrally attached to each other, and a fixed mold holder for coupling the take-out plate is formed at the rear to form a take-out plate installation groove, and is fixed to the rear of the fixed mold holder. It is composed of a fixed mold plate which prevents the ejection plate installed in the mold holder from operating in an airtight state and is coupled to the injection body.

At this time, the fixed mold holder and the fixed mold forming plate is formed with a pin hole into which the ejection pin of the ejection plate is inserted and the parting lock and the guide hole formed to partially invade the molding part, and the ejection plate installation groove is the ejection pin installation groove. It is configured to have a flow gap as much as the protrusion amount of, and the parting lock coupled to the blowout plate is composed of elastic friction members made of rubber, topron, synthetic resin, and fiber, so that the outer diameter is expanded by tightening the parting bolt. .

The movable mold integrally combines the movable mold-forming plate having an injection-molded portion integrally coupled with the injection-molded portion of the fixed mold-molded plate on the front side of the movable mold holder, and to the ram of the injection machine on the rear side. Combining the movable mold plate to integrally constitute a cavity for injecting the injection molding, and forms a guide hole through the movable mold forming plate, the movable mold holder and the movable mold plate, and movable with the movable mold plate of the guide hole A guide bushing is built in the mold holder side, and a locking jaw is formed in the outer guide hole of the movable mold holder, and a connecting rod is inserted from the movable mold plate side into the guide hole penetrating through the movable mold forming plate, the movable mold holder, and the movable mold plate. Parting lock coupled to the connecting rod at the end of the connecting rod and the parting socket, and the parting socket coupled to the connecting rod Combined, and constructed to attract takes to be published when the mold is removed.

At this time, the take-out block is configured such that when the movable mold is coupled to the stationary mold, the movable mold side surface coincides with the surface of the molded part of the stationary mold to support a part of the injection end.

According to the present invention configured as described above, the injection plate is configured to be immersed inside the stationary mold so that the injection mold can be safely removed in a multi-step sequence from the mold when the injection mold is opened after injection molding. It is designed to reduce the weight by minimizing the overall thickness of the ejection plate, to prevent foreign substances from pinching to the pin stroke space of the ejection plate, and to minimize the reduction of assembly parts, processing and assembly labor by not forming a separate ejection rod. It is a novel invention that can reduce the occurrence of defects and improve the quality by preventing the deformation of the injection molding to obtain the effect of cost reduction.

1 is a view illustrating a configuration state of an injection molding apparatus for a conventional injection mold.
Figure 2 is a configuration of the mold coupled state for injection molding of the present invention.
Figure 3 is an illustration of the mold separation step state of the present invention.
Figure 4 is an exemplary view of the ejection pin operating state of the present invention.
5 is an exemplary view of a mold separation state of the present invention.
6 is a view illustrating a configuration of a general injection molding machine.

Referring to the configuration of the present invention in detail with reference to Figures 1 to 5 as follows.

Fixed mold 10 fixedly coupled to an injection molding machine (not shown), and movable mold 20 coupled to a ram (not shown) of the injection molding machine to be combined with the fixed mold 10 to be coupled to and separated from each other. In constructing an injection molding apparatus for an injection mold composed of,

The ejection plate installation groove formed in the fixed mold 10 to have the ejection plate 30 including the parting lock 35 and the ejection pin 31 to have a flow gap L corresponding to the amount of protrusion of the ejection pin 31. Part that is coupled to the configuration 14, the movable mold 20 to be combined with the fixed mold 10, the part to be coupled to the parting lock 35 integrally coupled to the take-out plate 30 of the fixed mold 10 The connecting rod 40 including the socket 45 and the blowout block 41 is configured to flow by the mold separation gap H, so that the parting socket 45 of the connecting rod 40 of the movable mold 20 is fixed. 10 is coupled to the parting lock 35 formed on the ejection plate 30, and configured to operate the ejection pin 31 by dragging the ejection plate 30.

here
The stationary mold 10 is a stationary mold holder having a take-out plate installation groove 14 and a guide hole 18 formed on the rear surface to have a flow gap L corresponding to the amount of protrusion of the take-out pin 31. ), And integrally coupled to the front surface of the fixed mold holder 13, to form an injection molding part 12, the injection molding part 12, the pinhole 17 is inserted into the ejection pin 31 and The injection molding part is formed to be integrally connected to the guide hole 18 of the fixed mold holder 13 so that a part of the ejection block 41 that is integrally coupled to the connecting rod 40 and the parting socket 45 is invaded. At least one pair or more of the fixed mold-forming plate 11 and the at least one take-out pin 31 formed with the pin plate 32 are integrally fixed to each other based on the center. The ejection plate 30 formed by combining the parting lock 35 with the parting bolt 36 is coupled to the rear surface of the fixed mold holder 13, and the ejection plate 30 is built-in. It is composed of a fixed mold plate (15) that prevents the coupling so as to couple to the injection main body, the take-out pin 31 is coupled to the pin hole 17 and the parting lock 35 is coupled to the guide hole (18) ) Is coupled to the take-out plate installation groove 14, and then the rear side of the fixed mold holder 13 is blocked with a fixed mold plate 15 coupled to the injection mold body, so that the take-out plate 30 is operated in a sealed state with the outside. Configure to

In this case, the fixed mold holder 13 and the fixed mold forming plate 11 coincide with the pinhole 17 into which the ejection pin 31 of the ejection plate 30 is inserted and the parting lock 35, and a part of which is injection molding. A guide hole 18 is formed to invade the part 12, and the parting lock 35 coupled to the blowout plate 30 is composed of an elastic friction member made of rubber, topron, synthetic resin, and fiber. By tightening the parting bolt 36 is configured to expand the outer diameter.

The movable mold 20 has a movable mold-forming plate 21 having an injection molding part 22 which is coupled to the fixed mold 셩 plate 11 of the fixed mold 10 on the front side of the movable mold holder 23. ) Is integrally coupled, and the rear side of the movable mold plate 25 to be coupled to the ram of the injection molding machine integrally to form a cavity 60 for injecting raw materials for forming the injection molding 100, the movable mold forming mold A guide hole 28 penetrates the plate 21, the movable mold holder 23, and the movable mold plate 25, and the movable mold forming plate 21 and the movable mold holder 23 of the guide hole 28 are formed. The guide bush 50 is embedded in the guide hole 28, and the locking jaw 24 is formed outside the guide hole 28 of the movable mold holder 23, and the movable mold forming plate 21 and the movable mold holder 23 are formed. Inserting the connecting rod 40 into the guide hole 28 penetrating the movable mold plate 25 from the movable mold plate 25 side, the ejection block 41 and the parting socket 45 at the tip of the connecting rod 40In order to combine the configuration, when the movable mold 20 is coupled to the fixed mold 10, the parting socket 45 is coupled to the parting lock 35 formed on the take-out plate 30, and the movable mold 20 is fixed When separating from the metal mold | die 10, it is comprised so that the extraction board 30 may be pulled out.

Referring to the embodiment of the present invention configured in this way in detail as follows.

First, when the injection mold of the present invention is set in the injection molding machine as shown in FIG. 6, and the fixed mold 10 and the movable mold 20 are combined as shown in FIG. 2, the connecting rod configured to flow in the movable mold 20 The ejection block 41 integrally coupled to the 40 is pushed by the movable mold-forming plate 21 of the movable mold 20 so that the ejection block 41 is formed on the stationary mold-forming plate 11 of the stationary mold 10. The parting socket 45 inserted into the guide hole 18 and integrally coupled to the ejection block tip 41 is forcibly coupled to the parting lock 35 formed on the ejection plate 30 of the stationary mold 10.

In this case, the coupling strength of the parting socket 45 and the parting lock 35 may be such that the ejection pin 31 separates the injection molding 100 from the fixed mold plate 11 of the fixed mold 10. Such coupling strength is adjusted to the outer diameter of the parting lock 35, which occurs when the parting lock 35 is crushed by clamping or releasing the parting bolt 36 fixing the parting lock 35.

In the state in which the movable mold is firmly coupled to the stationary mold as described above, the stationary mold forming plate 11 of the stationary mold 10 and the movable mold forming plate 21 of the movable mold 20 come into close contact with each other, and thus the injection molding unit 12 When the 22 is formed, the injection molding material is injected into the injection molding parts 12 and 22 through the cavity 60 having the gate formed therein, thereby forming the injection molding 100.

When the molding of the injection molding 100 is completed in the above state, as shown in FIG. 3, the first step of separating the movable mold 10 from the fixed mold 20 is performed.

When performing the first step as described above, the injection molding 100 of the movable mold 20 of the movable mold 20 in a state of being coupled to the fixed mold forming plate 11, the injection molding portion 12 of the fixed mold 10 ( 21) separated from the moving object 100, wherein the connecting rod 40 installed in the movable mold 20 is fixed by the mold separation gap H formed on the movable mold plate 25 of the movable mold 20. Keep it.

At this time, the movable mold-forming plate 21 of the movable mold 20 is first spaced apart from the injection-molded product to the injection molding part 22 formed on the movable mold-forming plate 21 of the movable mold 20. This is to facilitate the extraction of the injection-molded material 100 so as not to be attached.

When the mold is separated in the first stage and the movable mold 20 is retracted in the above state, the connecting rod 40 installed in the movable mold 20 is caught by the movable mold holder 23 in the second stage as shown in FIG. Withdrawal plate installation groove of fixed mold holder 13 is pulled out by the connecting rod 40 by the drawing plate 30 coupled with the parting lock 35 to the parting socket 45 of the connecting rod 40 while retreating together with the mold 20. The fixed mold is moved by the flow gap (L) formed in the (14) and the ejection pin (31) integrally fixed to the ejection plate (30) pushes the injection (100) together with the ejection block (41) formed in the connecting rod (40). (10) is spaced apart from the fixed mold forming plate (11) injection molded part (12).

If the movable mold 20 continues to retreat in the state where the two stages are separated as described above, as shown in FIG. 5, the ejection plate 30 installed in the fixed mold holder 13 of the fixed mold 10 is fixed mold. The holder 13 can no longer operate and the connecting rod 40 installed in the movable mold 20 continues to be retracted together with the movable mold 20 so that the parting socket 45 is parting of the outlet plate 30. The ejection block 41 is detached from the lock 35 while being separated from the injection pin 31.

The present invention, when carried out in the injection molding mold to prevent the pinch of the foreign matter caught in the pin stroke space of the blowout plate, and does not form a separate take-out rod, minimizing the shrinkage and processing and assembly of related assembly parts, and prevents deformation of the injection molding Therefore, cost reduction can be achieved by reducing defects and improving quality.

10: fixed mold 11: fixed mold plate 12: injection molding part
13: Fixed mold holder 14: Outlet plate mounting groove 15: Fixed mold plate
17: pinhole 18,28: guide hole
20: movable mold 21: movable mold plate 22: injection molding part
23: movable mold holder 24: locking jaw 25 movable mold plate
30: ejection plate 31: ejection pin 32: pin plate
35: parting lock 36: parting bolt
40: connecting rod 41: take out block 45: parting socket
50: guide bush 60: cavity 100: injection molding
H: Separation gap L: Flow gap

Claims (4)

Fixed mold 10 fixedly coupled to an injection molding machine (not shown), and movable mold 20 coupled to a ram (not shown) of the injection molding machine to be combined with the fixed mold 10 to be coupled to and separated from each other. But with
The ejection plate 30 is sealed to the outside in the ejection plate installation groove 14 in which the ejection plate 30 is formed in the fixed mold 10 to have a flow gap L corresponding to the amount of protrusion of the ejection pin 31. The movable mold 20, which is configured to operate in a closed state, and which is coupled to the stationary mold 10, has a stationary mold 셩 plate 11 of the stationary mold 10 on the front surface of the movable mold holder 23. Combining the movable mold-forming plate 21 formed with the injection molding unit 22 to be combined with each other, and to form the injection molding 100 by combining the movable mold plate 25 to be integrally coupled to the ram of the injection machine And a cavity 60 for injecting raw materials for injection, and the movable mold 20 pulls the ejection plate 30 of the stationary mold 10 so that the ejection pin 31 pushes the ejection molding to eject the ejection mold. In configuring the take-out apparatus,
A parting lock 35 is formed on a blowout plate 30 having a blowout pin 31 installed inside the fixed mold 10;
A part that engages with at least one pair of parting locks 35 so as to be symmetrical with a center integrally coupled to the take-out plate 30 of the stationary mold 10 to the movable mold 20 that mates with the stationary mold 10. A connection bar 40 including the socket 45 and the blowout block 41 configured to flow by the mold separation gap H;
The parting socket 45 of the connecting rod 40 formed in the movable mold 20 is coupled to the parting lock 35 formed in the drawing plate 30 of the fixed mold 10 to draw the drawing plate 30 to draw the drawing pin 31. ) To operate;
A part of the blowout block 41 which is integrally coupled to the connecting rod 40 and the parting socket 45 to the injection molding part 12 of the fixed mold plate 11;
Parting lock 35 coupled to the take-out plate 30 is composed of a flexible friction member made of rubber, topron, synthetic resin, fiber material and configured to expand the outer diameter by tightening the parting bolt 36;
A guide hole 28 penetrating through the movable mold forming plate 21, the movable mold holder 23, and the movable mold plate 25;
The guide bushing 50 is embedded in the movable mold-forming plate 21 and the movable mold holder 23 of the guide hole 28, and the locking jaw 24 is disposed outside the guide hole 28 of the movable mold holder 23. The connecting rod 40 is inserted from the movable mold plate 25 into the guide hole 28 penetrating through the movable mold forming plate 21, the movable mold holder 23, and the movable mold plate 25. When the takeout block 41 and the parting socket 45 are coupled to each other at the end of the connecting rod 40, the parting socket 45 is taken out when the movable mold 20 is coupled to the stationary mold 10. Injection molding apparatus for injection molding, characterized in that configured to include a coupling to the parting lock (35) configured in 30). delete delete delete

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