CN114436510A

CN114436510A - Mold separation device

Info

Publication number: CN114436510A
Application number: CN202111284924.5A
Authority: CN
Inventors: 郑荣和; 李衍衡; 郑东衍
Original assignee: Daeho Technology Co Ltd
Current assignee: Daeho Technology Co Ltd
Priority date: 2020-10-30
Filing date: 2021-11-01
Publication date: 2022-05-06
Also published as: KR102410119B1; KR20220057837A

Abstract

The mold separation apparatus of the present invention may include: a mold provided with an upper core and a lower core which are in contact with a material to be molded, a core hole into which the upper core and the lower core are inserted, and a guide post or a plate portion for supporting the lower core; a core plate for taking out the upper core from the mold; and a transfer arm for taking out the molded article from the mold.

Description

Mold separation device

Technical Field

The present invention relates to a mold separation device for separating a mold ejected from a molding device and taking out a molded article.

Background

The shaped article mentioned in the following background art and the description of the present invention includes, for example, a camera lens, a glass having a curved surface portion, a dial glass, a glass for an automobile dashboard, a cover glass for various measuring devices, sapphire, a light-transmitting plate, a front cover and a rear cover of a portable terminal.

A part or the whole of the object to be formed may be formed in a curved surface. The glass having a curved surface portion can also be used as a lens of a camera. The material to be molded is heated to a high temperature and pressed to be processed into a curved surface having a desired 3D shape. The material to be molded before molding is put into a mold and heated and pressurized, whereby a material to be molded in the form of glass or a lens molded into a desired 3D shape can be obtained.

Disclosure of Invention

The invention aims to provide a mold separation device which separates a mold discharged from a forming device and takes out a formed object from the mold.

The molded object illustrated in the drawings is a lens, and a multi-cavity mold may be used to process a plurality of lenses at one time, but the type of the mold is not limited thereto.

In the present invention, the shaped object may be accommodated between the two cores. The shaped object may be taken out from the exposed space after the upper core is separated. At this time, the upper core and the molded article are drawn out by vacuum suction. Thereby, the upper core and the formed object can be prevented from being contaminated by foreign matters caused by unloading the parts. It is also possible to prevent breakage due to a contact force when picking up the formed object with an excessive force.

When the object to be molded is a very small object such as a lens, a plurality of objects to be molded can be molded at one time inside the mold, instead of processing one object to be molded, and in this case, a multi-cavity mold can be used. In the case of using a multi-cavity mold, since the upper core and the formed object are plural, if a plurality of pickup parts are installed for one mold, there may be caused a problem that the volume or structure of the apparatus becomes complicated. The present invention mounts a pickup unit in a flat plate shape, forms a vacuum on a flat face, and brings a flat face of a core plate to which the vacuum is applied into face-to-face contact with an upper flat face of an upper core. The shaped object having the curved surface portion is also brought into contact with the flat surface of the transfer arm to which the vacuum is applied. This prevents the surface of the upper block of the molding device, which is pressed by a pressing force and is closely adhered to the upper block to cause high-temperature heat conduction, from being scratched or abraded. There is also an advantage that an external force applied to the formed object can be minimized.

The molding apparatus is provided with an upper block for applying a pressurizing force to the mold in the molding apparatus, and is capable of being lifted and lowered inside a main chamber of the molding apparatus. The upper block can be equipped in the main chamber according to different processes such as preheating, forming and cooling. A mold is called a multi-cavity mold if a plurality of molded object receiving portions are provided inside the mold so that a plurality of molded objects can be molded at a time by one upper block. Because the multi-cavity die can simultaneously form a plurality of formed objects, the effects of saving energy and reducing forming time can be achieved.

Drawings

Fig. 1 is a block diagram illustrating a mold separation apparatus of the present invention together with a molding apparatus.

Figure 2 is an oblique view illustrating the multi-cavity mold of the present invention.

Fig. 3 is a schematic diagram illustrating a separated state of the multi-cavity mold of the present invention.

Fig. 4 and 5 are cross-sectional views illustrating a process of molding a material to be molded by the multi-cavity mold of the present invention.

Fig. 6 is a side view of the mold separation apparatus of the present invention.

Fig. 7 is a plan view illustrating the principle of centering the mold to a prescribed position by the centering bar or the mold supporting bar of the present invention.

Fig. 8 is a side view illustrating a state in which the core board of the present invention ascends after adsorbing the upper core.

Fig. 9 is a side view illustrating a state where the core board of the present invention is completely raised and thereby a sufficient empty space for the transfer arm to enter is formed at the lower side of the upper core.

Fig. 10 is a side view illustrating a state in which the lifter of the present invention pushes up the lower core.

Fig. 11 is a side view showing a state where the transfer arm of the present invention is moved in the lateral direction to a position facing the lower core and the molded article is attached to the transfer arm by vacuum.

Fig. 12 is a side view showing a state in which the transfer arm of the present invention is moved in the lateral direction and is about to release the molded article to the loading section.

Description of the symbols

3: main chamber, 10: the preheating unit 30: forming unit, 40: cooling unit, 60: centering rod, 61: centering groove, 65: mold support bar, 90: molded article, 91: forming device, 92: mold separation device, 200: mold, 210: plate portion, 219: orientation projection, 230: guide post, 231: core hole, 239: orientation groove, 250: snap ring, 270: lower core, 271: second forming portion, 290: upper core, 291: first forming portion, 300: upper block, 400: lower block, 501: a frame, 510: lifter hole, 520: lifter, 522: elevator head, 550: core board, 552: electric actuator, 554: vacuum connection, 556: vacuum channel, 560: transfer arm, 562: vacuum suction part, 570: and a loading part.

Detailed Description

Referring to fig. 1, a mold for forming a curved surface portion in a formed object may perform preheating, forming or cooling in the process of passing through the inside of a main chamber 3 of a forming apparatus. A transfer means for transferring the mold 200 to the preheating unit 10, the forming unit 30, and the cooling unit 40 in this order may be provided in the main chamber 3.

The mold 200 may be preheated to a preheating temperature in the preheating unit 10. The molding unit 30 may heat the preheated mold 200 to a molding temperature and pressurize the mold 200 with a certain pressurizing force, thereby forming a curved surface portion in the object to be molded. The above-described method is a heating molding method when the molding temperature is higher than the preheating temperature. The molding unit 300 may mold the object to be molded by heating and pressurizing the mold 200.

In contrast, the molding unit 30 can mold the object to be molded at a molding temperature lower than the preheating temperature while gradually cooling the mold 200. This is a cooling molding method when the molding temperature is lower than the preheating temperature.

The mold 200 may be thrown into the interior of the main chamber 3 through the entrance of the main chamber 3. The preheating unit 10, the shaping unit 30, and the cooling unit 40 may be sequentially arranged in the main chamber 3 in a direction toward the outlet of the main chamber. On the outlet side of the main chamber, a discharge part 4 for discharging the mold 200 passing through the inside of the main chamber 3 to the outside may be provided.

The ejection part 4 may move the mold 200 from the forming apparatus to the mold separation apparatus. The discharge means may comprise a discharge rod operated by air pressure or an actuator driven by means of electric power.

Fig. 2 is a perspective view illustrating the multi-cavity mold of the present invention, and fig. 3 is a schematic view illustrating a separated state of the multi-cavity mold of the present invention. Fig. 4 and 5 are cross-sectional views illustrating a process of molding a material to be molded by the multi-cavity mold of the present invention. Fig. 4 and 5 illustrate the a-a' cutting plane of fig. 2.

The upper block 300 of fig. 4 and 5 may include at least one of the upper block of the preheating unit 10, the upper block of the forming unit 30, and the upper block of the cooling unit 40. The lower block 400 may include at least one of the lower block of the preheating unit 10, the lower block of the forming unit 30, and the lower block of the cooling unit 40.

The multi-cavity mold 200 can house a plurality of objects to be molded 90 and can mold the objects to be molded into a cover glass, a lens, or the like of a portable terminal. The multi-cavity mold 200 may include at least one of a plate portion 210, a guide post 230, an upper core 290, a lower core 270, and a Stopper Ring 250(Stopper Ring).

The plate portion 210 has a plate-like shape and can be supported by the lower block 400 in the forming device 91. The guide posts 230 may be supported by the plate portion 210. A plurality of core holes 231 may be provided in the guide post 230. The upper block 300 may pressurize the upper core 290 while moving toward the plate portion 210.

The shaped object may include, for example, a glass gob (gob) for making a lens or a lens cover of a portable terminal. A plurality of glass gobs can be formed at one time by the guide post 230 formed with a plurality of core holes 231 into which the upper cores 290 are inserted.

The guide post 230 may be formed in a cylindrical shape or a polygonal column shape. The core hole 231 may be formed in a planar shape, and a plurality of holes may be formed at positions axially symmetrical to the center of the guide post 230. The plurality of core holes 231 may be arranged at equal intervals on an imaginary circumference. The number of the core holes 231 is 2 or more, preferably 6 to 8.

The mold 200 can be concentrically arranged at a predetermined position by the centering bar 60. The moving direction of the mold 200 when the centering bar 60 centers the mold 200 to a prescribed position by pushing the stopper ring 230 a plurality of times is defined as a pushing direction d.

The upper core 290 may be inserted into the core hole 231 together with the shaped object 90. The upper core 290 may pressurize the formed object within the core hole 231. In order to allow the upper core 290 to accurately form the object to be formed, the core hole 231 may guide the movement when the upper core 290 presses the object to be formed.

At least one of the plate portion 210 and the guide posts 230 may be provided with an alignment portion for aligning the guide posts 230 to the plate portion 210. The orientation protrusion 219 of D-shaped section, a part of the circumference of which is cut, and the orientation groove 239 are embodiments of the alignment portion. A guide protrusion 219 protruding toward the guide post 230 may be provided on a side of the plate portion 210 facing the guide post 230. A guide groove 239 inserted into the guide protrusion 230 may be provided at a side of the guide post 230 facing the plate portion 210. The orientation protrusions 219 may be formed in a planar shape similar to "D". The orientation groove 239 may be formed in a shape corresponding to the orientation protrusion 219. The position of the guide post 230 with respect to the plate portion 210 can be fixed when the orientation groove 239 is inserted into the orientation protrusion 219. When the orientation groove 239 is inserted into the orientation protrusion 219, the rotation of the guide post 230 with respect to the plate portion 210 can be restricted.

Although not shown, the same embodiment can be applied to the plate portion 210 and the entire mold 200. In order to maintain the rotation angle of the die 200 at a predetermined angle or to position the die 200 in a parallel state with respect to the reference line, a part of the circular plate portion 210 may be cut out to form a planar shape of "D". By bringing the straight line portion of the cut "D" shape into contact with the reference plane, the rotational angle of the entire plate portion 210 or the mold 200 can be aligned.

The centering bar 60 may be configured to center the mold 200 in a cylindrical shape when any one of the outermost portion of the mold 200, the stopper ring 250, and the plate portion 210 is cylindrical. A centering groove 61 of a V shape may be formed at one side surface of the centering bar 60. Any one of the outermost contour portion of the mold 200 formed in a circular shape, the stopper ring 250, and the plate portion 210 may be aligned to a desired position by two-point contact with the centering groove 61 in a V shape.

The upper core 290 may be disposed above the material to be molded in the core hole 231 of the guide post 230. The upper core 290 may shape the upper side of the shaped object. A first molding portion 291 for molding an upper side surface of the object to be molded may be formed on a side surface of the upper core 290 facing the object to be molded. To ensure the required lowering distance for forming, the upper core 290 may protrude from the guide posts 230.

The lower core 270 may be disposed under the object to be formed in the core hole 231 of the guide post 230. An end portion of the lower core 270 may be contact-supported by the plate portion 210. A second forming portion 271 for forming the lower side of the object to be formed may be formed at one side of the lower core 270.

The left and right movement of the upper core 290 or the lower core 270 is restricted by the core hole 231 so that the movement can be made only in the up and down direction. The upper direction may coincide with a moving direction of the upper block 300 pressurizing the upper core 290.

When the guide posts 230 are pushed by the transfer member or the centering bar 60, the guide posts 230, the upper core 290, and the lower core 270 may be shaken, and the formed article being formed may be subjected to a lateral transfer force. Which may induce poor formation. In order to prevent a lateral transfer force from being applied to the guide post 230, the upper core 290, and the lower core 270, the stopper ring 250 may be provided in a state of being spaced apart from the guide post 230. The stop ring 250 may block lateral external forces acting on the guide posts 230, the upper core 290, and the lower core 270.

In addition, the stop ring 250 may determine a lower limit of the upper block 300 that pressurizes the upper core 290. The lower limit may be a limit distance or position allowing the upper block 300 to approach in order to form the object into a set shape, based on one of the lower block 400, the plate portion 210, the guide post 230, and the upper core 290. By providing the snap ring 250, the upper block 300 can reach a lower limit as long as it moves to such an extent that it can physically interfere with the snap ring 250.

The stopper ring 250 may be supported by the plate portion 210 and surround the guide post 230. The stopping ring 250 may be formed in a hollow tubular shape spaced apart from the guide post 230.

As shown in fig. 4, the height of the upper core 290 before the pressurization step may be more protruded compared to the height h of the stopper ring 250. In the pressurization step of fig. 5, the upper block 300 may pressurize the upper core 290 within a pressurization distance P from a position where contact with the upper core 290 is started to a lower limit position. The movement of the upper block 300 will be mechanically stopped when the stop ring 250 is encountered. At this time, the position where the upper block 300 stops may accurately satisfy the lower limit. The replacement between the snap rings 250 of different heights is possible, and the lower limits of various specifications can be satisfied by replacing the snap rings 250.

Further, by providing the stopper ring 250, a part of the upper core 290 can maintain a state of being protruded from the guide post 230 even after the upper block 300 is pressurized. Thereby, the upper core 290 can be easily taken out from the guide posts 230 after the formation of the formed object is completed.

The multi-cavity mold of the present invention can be assembled as follows.

The guide posts 230 may be mounted on the plate portion 210 using the alignment portions. A lower core 270, a glass frit, and an upper core 290 may be sequentially inserted into each core hole 231 of the guide post 230.

The stopper ring 250 is placed above the plate portion 210, and may be located at a distance from the guide posts 230, the lower core 270, the frit, and the upper core 290. The stop ring 250 may block the lateral shifting force of the mold from being transmitted to the guide posts 230, the lower core 270, the glass gob, and the upper core 290.

The multi-cavity mold discharged to the outside of the forming device 91 may be moved to the mold separation device. The mold separation apparatus can remove the upper core 290 from the guide posts 230 of the mold. After the upper core 290 is separated, the lower core 270 on which the formed object is placed may be exposed to the outside. The separation of the formed object from the mold may be accomplished by taking out the formed object loaded on the lower core 270.

The present invention is characterized in that a plane formed on the core board 550, which is one component, and planes of the plurality of upper cores 290 are arranged to face each other in a plane-to-plane manner and are lifted by vacuum suction. Further, the formed article 90 having a curved surface portion is caused to be vacuum-sucked to the flat portion of the transfer arm 560 forming a flat surface over a wider area. Thereby, it is possible to prevent scratches of the upper core 290 or deformation of the formed article 90 due to an excessive contact force.

Further, the effect of removing foreign matter adhering to the contact surface during vacuum suction is obtained. The upper plane of the upper core 290, which is a pressure application surface of the upper block and the upper core 290 and a heat transfer surface, can maintain a clean state without scratches. The same applies to the shaped object 90.

The upper portion of each upper core 290 may form a plane. The portion of the Core board 550(Core Pad) facing the upper Core 290 may be formed flat over a wider area than the upper Core 290. This is because the attraction force of the upper core 290 can be raised and the separation can be performed in a vertical state. Since the upper planes of the plurality of upper cores 290 are vacuum-sucked to the plane portions of the core substrate 550, foreign substances and scratches may be prevented from being generated.

The same applies to the shaped object 90. The portion of the transfer arm 560 facing the lower core 270 may be formed flat over a wider area than the shaped object 90. The plurality of formed objects 90 may be vacuum-sucked to the portion of the forming surface of the transfer arm 560.

The mold 200 may be provided with at least one of the plate portion 210, the guide post 230, the upper core 290, the lower core 270, and the stopper ring 250. The mold is not limited to the embodiment in which the lower core 270 faces the upper core 290.

The upper core 290 may face the upper side of the shaped object 90, and the lower core 270 may face the lower side of the shaped object 90. One side and the other side of the shaped object 90 may be in contact with the upper core 290 and the lower core 270, respectively. The left and right movement of the upper core 290 and the lower core 270 may be restricted by being inserted into the core hole 231. A plurality of core holes 231 may be provided in the guide post 230, which may be referred to as a multi-cavity mold. At least one of the guide post 230, the lower core 270, and the stop ring 250 may be contact-supported by the plate portion 210. The core board 550 and the transfer arm 560 are members for drawing the formed object 90 from the mold configured as described above.

The core plate 550 may remove the upper core 290 from the mold. The transfer arm 560 can take out the formed article 90 from the mold.

In order to process the molds using the core board 550 and the transfer arm 560, the molds should be placed at prescribed positions determined in advance when designing the apparatus. For this purpose, centering bars 60 or mold support bars 65 may be provided.

When the mold is moved and placed on the mold separating device 92, the control device or the operator can recognize the predetermined position, but it is difficult to always place the mold on the predetermined position. Even in the case where the mold supporting rod 65 is in a fixed state and the position where the mold contacts the mold supporting rod 65 is designed as a prescribed position, it is difficult to always place the mold at the prescribed position at the time of supplying the mold.

Therefore, the mold support bar 65 and the centering bar 60 can be brought into contact with one side and the other side of the mold, and the mold can be guided to a predetermined position by moving the centering bar 60 more than once. A process of aligning the mold to a prescribed position may be required before the core board 550 and the transfer arm 560 approach the mold. The centering bar 60 and the die supporting bar 65 may be disposed at positions opposite to each other with a die interposed therebetween. The centering bar 60 faces the side surface of the mold, and can align the mold to a predetermined position by hitting the side surface of the mold at least once.

In order to prevent the core board 550 and the transfer arm 560 from colliding with each other, the arrangement direction of the core board and the transfer arm is preferably perpendicular to each other.

The specific position where the mold is placed can be set to a prescribed position. The core board 550 may be disposed in a vertical direction at a predetermined position. The core board 560 may be disposed in a lateral direction of a predetermined position. The core board 550 is first operated to expose the formed object 90, and the formed object 90 is completely formed and thus can be transferred to the loading part 570 by the transfer arm 560.

A vertical moving part of the core board 550 is required at this time. The core board 550 may be elevated by means of an electric actuator 552. This is to cope with an unstable speed profile. However, without contact force control, contact driven by a motor may result in a risk of breakage. Therefore, the present invention is characterized in that electric driving such as a motor is used before the collision, and then a vacuum suction method is used. The core board 550 and the transfer arm 560 may be moved out of a range spaced apart from the mold by means of electric power. In order to prevent the occurrence of a collision when the core board 550 or the transfer arm 560 comes within a certain distance from the mold without driving the contact force control logic, the electric driving may be stopped and the upper core 290 or the formed object 90 may be sucked by means of the vacuum suction force.

When the distance from the mold to the core board 550 is the first height or more, the electric actuator 552 lowers the core board 550 at the first speed, and when the distance from the mold to the core board is smaller than the first height, the electric actuator 552 lowers the core board 550 at the second speed, which may be smaller than the first speed.

The core plate 550 may be stopped in a state of not contacting the upper core 290 after being lowered toward the mold. The upper core 290 may be attracted upward by the negative pressure supplied to the vacuum connection 554. By means of the vacuum suction force, the upper core 290 may be attached in the core plate 550.

The transfer arm 560 is accessible from a distance of the mold to a side of the mold by an empty space formed by moving the upper core 290 in a vertical direction of the mold at the core plate 550. The vacuum suction unit 562 provided on the transfer arm 560 can take out the formed article 90 placed on the lower core 270 from the mold.

The core board 550 may descend at an unstable speed or an arbitrary speed profile before stopping in a state of not contacting the mold. For this purpose, the lowering speed of the core board 550 may be controlled by means of an electrically driven actuator 552.

Next, the elevating and lowering means of the lower core 270 will be explained.

The specific position where the mold is placed can be set to a prescribed position. The Lifter 520(Lifter) may be installed in such a manner as to be liftable with respect to the Frame 501(Frame) to which the core board 550 and the transfer arm 560 are installed. The lifter 520 may pass through the lower portion of the mold and the core hole 231 while being lifted up at a predetermined position. The lifter hole 510 having a sufficient size through which the lifter 520 can pass can be formed in the frame 501 or the plate portion 210 of the mold. The elevator 520 may bring the shaped object 90 close to the core plate 550 by pushing up the lower core 270.

The frame 501 constitutes a skeleton of the mold separating device 92, and the frame 501 may serve as a support rod for the core board 550 and the transfer arm 560 and a fixing portion thereof. A specified position may be defined in the framework 501. The mold ejected from the molding device 91 can be moved to a prescribed position of the mold separating device 92 by the ejection member 4. As a means for moving the lower core 270 inside the mold after the mold is placed at a predetermined position of the frame 501, a lifter 520 may be provided.

A lifter 520 that lifts the lower core 270 may pass through the lower portion of the mold. When the Lifter 520 is raised to the uppermost position, a Lifter Head 522(Lifter Head) at the end of the Lifter 520 may contact and interfere with the frame 501. The elevator 502 will not be able to continue to rise while the elevator head 522 is in contact with the frame 501. This makes it possible to limit the height of the lower core 270 as well as the distance of the core board 550 to the molded article 90.

The transfer arm 560 may approach from a position spaced apart from the mold to a position overlooking the mold in the vertical direction. In order to move the upper core 290 in the vertical direction, the angle of approach to the upper core 290 is a vertical displacement. The vacuum suction portion 562 of the transfer arm 560 may lift the formed article 90 from the lower core 270 while the transfer arm 560 faces the lower core 270.

As described above, the present invention is characterized in that the state in which the upper core 290 is attached to the core plate 550 and the state in which the formed article 90 is attached to the transfer arm 560 are realized by vacuum suction.

The upper core 290 protrudes from the guide posts 230, and the portions protruding from the guide posts 230 may be vacuum-sucked onto the core plate 550. The stopper ring may be installed in the plate portion 210 or the guide post 230, and may be spaced apart from it in a radius direction. This is to prevent an external force from the side of the mold from being transmitted to the guide posts 230. Since the upper side of the stopper ring 250 is in contact with the upper block of the molding device 91, the heights of the stopper ring 250 and the upper core 290 of the mold ejected from the molding device 91 may be the same. Even when the core plates 550 of the mold separating device 92 are close to each other, the core plates 550 have difficulty in ignoring the contact of the stopper ring 250 with the upper core 290. In the forming device 91, the stop ring 250 may determine the lower limit of the upper core 290. In the mold separating device 92, the maximum lowering position of the core plate 550 may be limited by the stopping ring 250.

Claims

1. A mold separation apparatus, comprising:

an upper core and a lower core which are contacted with an object to be formed are arranged, a core hole for inserting the upper core and the lower core is formed, and a guide column or a plate part for supporting the lower core is also arranged;

a core plate for taking out the upper core from the mold; and the number of the first and second groups,

and a transfer arm for taking out the formed object from the mold.

2. The mold separation apparatus of claim 1, comprising:

and a centering bar facing a side surface of the mold, the centering bar being capable of aligning the mold to a predetermined position by hitting the side surface of the mold at least once.

3. The mold separation apparatus of claim 1, wherein:

a specific position where the mold is placed is set to a prescribed position,

the core board is disposed in the vertical direction at the predetermined position,

the transfer arm is disposed in a lateral direction of the predetermined position,

the core board is first operated to expose the object to be formed, and the exposed object to be formed is transferred to a loading part by the transfer arm.

4. The mold separation apparatus of claim 1, wherein:

the core board is lifted by means of an electric actuator,

the electric actuator lowers the core board at a first speed when a distance from the mold to the core board is a first height or more,

the electric actuator lowering the core board at a second speed when the distance from the mold to the core board is less than a first height,

the second speed is less than the first speed.

5. The mold separation apparatus of claim 1, wherein:

the core plate is stopped in a state of not contacting the upper core after being lowered toward the mold, the upper core is attracted in an upper direction by a negative pressure supplied to a vacuum connection part, and the upper core is adsorbed in the core plate by the pinhole attraction force.

6. The mold separation apparatus of claim 1, wherein:

a space formed by moving the upper core in a vertical direction of the mold on the core plate, the transfer arm approaching from a side of the mold,

a vacuum suction portion provided to the transfer arm takes out the formed object placed on the lower core from the mold.

7. The mold separation apparatus of claim 1, wherein:

the core board descends at an unstable speed before stopping in a state of not contacting the core board,

and controlling an unstable descending speed of the core board by means of an electrically driven actuator.

8. The mold separation apparatus of claim 1, wherein:

a specific position where the mold is placed is set to a prescribed position,

a lifter is installed to be liftable with respect to a frame on which the core board and the transfer arm are installed,

the lifter penetrates through the lower portion of the mold or the core hole in the process of being lifted at the predetermined position,

the elevator makes the formed object approach the core plate by lifting the lower core.

9. The mold separation apparatus of claim 1, wherein:

the core board and the transfer arm are mounted in a frame,

when the mold is placed on the frame in a prescribed position,

an elevator moves the lower core inside the mold.

10. The mold separation apparatus of claim 1, wherein:

the mould is placed on a frame and,

a lifter to lift the lower core penetrates the frame and the lower portion of the mold,

the lift limit of the lifter is determined when a lifter head at an end of the lifter interferes with the frame in contact.

11. The mold separation apparatus of claim 1, wherein:

the transfer arm approaches from a position spaced apart from the mold to a position overlooking the mold in a vertical direction,

when the transfer arm is opposed to the lower core,

the vacuum suction portion of the transfer arm sucks the formed article from the lower core.

12. The mold separation apparatus of claim 1, wherein:

the state in which the upper core is attached to the core plate and the state in which the formed object is attached to the transfer arm are realized by vacuum suction.

13. The mold separation apparatus of claim 1, wherein:

the upper core protrudes from the guide posts, and the portions protruding from the guide posts are vacuum-sucked onto the core plate.

14. The mold separation apparatus of claim 1, wherein:

equipped with a stop ring mounted on the plate portion or the guide post,

the stopper ring determines a lower limit of descent of the upper core,

the maximum lowering position of the core plate is restricted by the snap ring.

15. The mold separation apparatus of claim 1, wherein:

the upper portion of each of the upper cores forms a flat surface, a portion of the core plate facing the upper core forms a flat surface in a wider area than the upper core, and the upper flat surfaces of the plurality of upper cores are attracted to the flat surface portion of the core plate by the pinholes.

16. The mold separation apparatus of claim 1, wherein:

the portion of the transfer arm facing the lower core is formed into a flat surface over a wider area than the molded object, and the molded object is vacuum-sucked to the portion of the transfer arm where the flat surface is formed.

17. The mold separation apparatus of claim 1, wherein:

the core board or the transfer arm moves outside a range spaced from the mold by an electric drive, stops the electric drive when entering the range, and sucks the upper core or the formed object by a vacuum suction force.