JP3152728B2 - Core setting method and core setting device in mold making machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core setting method and a core setting device in a mold making machine, and more particularly to a method of setting a core in a molding cavity of a molded mold quickly and with high accuracy. The present invention relates to a core setting method and a core setting device in a mold making machine.

[0002]

2. Description of the Related Art The mechanization of mold making is rapidly progressing, and in recent years, upper and lower casting frames are overlapped with a pattern plate on which a model is integrally formed, so that predetermined moldings are respectively placed in the upper and lower casting frames. After forming the molding space, filling molding sand into the molding space and compacting it, the operation until the molding of the upper and lower molds is completely automatic, as a mold molding machine that is generally used It has become to. The use of such a molding machine has significantly improved the molding cycle.

Incidentally, in a mold for obtaining a cast product having a hollow or complex shape, it is necessary to set a core in a casting cavity after the molding, as is well known.

However, in the conventional mold making machine, the core has to be set manually after the mold has been formed, so that a series of automatic molding operations are interrupted by the setting work by the core. As a result, there is a problem that the molding cycle is reduced and the mold productivity is reduced.

In order to avoid a decrease in the molding cycle due to such a core setting operation, a core setting station is provided separately from the molding station, and the molded mold is moved to the core setting station. Later, there has been proposed a mold making machine in which a core is set in a casting cavity of such a mold.

[0006] However, such a two-station type mold making machine is inevitably extremely large, complicated and very expensive. In addition, since the core set itself must be manually operated, it requires skill in the work, and inevitably results in disadvantages in terms of cost, and there is also a problem that the work itself involves danger. It was.

[0007]

Here, the present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a core into a casting cavity of a mold molded by a mold molding machine. The present invention is to provide a core setting method and a core setting apparatus in a mold making machine, which can automatically perform the setting of the mold quickly and with high accuracy by using an apparatus having a simple structure.

[0008]

According to the present invention, in order to solve the above-mentioned problem, upper and lower casting frames are overlapped with a pattern plate on which a model is integrally formed, and predetermined patterns are respectively placed in the upper and lower casting frames. Forming a molding space, and compacting the molding sand in the molding space to form an upper and lower mold having a casting space corresponding to the model, in the molding space of the molded upper and lower molds. When setting a predetermined core on the core of the pattern plate, provided with a recess having a shape corresponding to the model of the upper mold side, using a core set plate holding the core, the core set plate After being placed on the pattern plate and guided to the set position of the pattern plate between the upper and lower molding frames of the mold making machine body together with the pattern plate, the set position The core set plate is supported by a support member that is reciprocated between a fixed take-out position and separated from the pattern plate to be taken out. At this take-out position, the core is supported by the core set plate. In addition, after molding the upper and lower molds, the core set plate is moved to the set position again, and a core setting method in a mold molding machine for setting the cores in the casting space of the lower mold, It is a feature.

In the present invention, the upper and lower molding frames are overlapped with a pattern plate on which a model is integrally formed, and a predetermined molding space is formed in each of the upper and lower molding frames. By compacting the molding sand in the space, the mold molding machine body for molding the upper and lower molds having the casting space corresponding to the model, a storage device for storing the pattern plate is separately provided, while the storage device is provided. A core setting device in a mold making machine provided with a moving means for guiding a stored pattern plate to the mold making machine main body and mounting the same, wherein (a) a shape corresponding to a model on an upper mold side of the pattern plate. The pattern plate is superimposed on the pattern plate and stored in the storage device together with the pattern plate. A core set plate derived from the storage device to the set position of the pattern plate between the upper and lower flasks of the casting mold making machine main body, can hold a core which is set in the casting space with Npureto,
(B) a supporting member which is arranged between the upper and lower casting frames of the main body of the mold making machine so as to be reciprocally driven between a set position of the pattern plate and a predetermined take-out position; The core set plate guided to the set position is supported by the support member and separated from the pattern plate and taken out, and the core held at the take-out position with respect to the core set plate, A core setter, which is inserted between the upper and lower molding flasks of the mold molding machine main body and set in the casting space of the mold molded in the lower molding flask. The device is also its feature.

Further, according to the present invention, in the core setting device in such a mold making machine, the support of the core set plate on the support member and the holding of the core on the core set plate are provided. ,
A core setting device in a mold making machine which is designed to be performed by vacuum suction is also characterized.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

First, FIG. 1 schematically shows an overall plan structure of a molding machine constituted according to the present invention. In such a molding machine, a storage device 12 for storing a plurality of pattern plates is provided separately from the molding machine body 10, and the pattern plates stored in the storage device 12 are first and second. The pattern plate moving devices 14 and 16 and the pattern plate exchanging device 18 guide and attach to the molding machine main body 10 or are detached from the molding machine main body 10 and stored in the storage device 12. I have. Further, a core setter 20 for setting a core to a mold molded by the molding machine main body 10 is provided separately from such a pattern plate exchange / storage device.

More specifically, the molding machine main body 10 has a known structure used for molding a so-called frameless horizontal split mold, and as shown in FIG. With the support 24 rotated around the center,
Upper frame 2 supported via two guide bars 26, 26
8 and a lower frame 30.

That is, when molding a mold using the mold molding machine 10, first, the upper and lower frames 2 are rotated at the rotational position of the support 24 as shown by the solid line in FIG.
The upper and lower frames 28 and 30 are overlapped with each other under a state in which a pattern plate 32 in which a model corresponding to the shape of the desired casting space is integrally formed is arranged between the upper and lower frames 8 and 30. Thereafter, the support table 24 is rotated to the rotation position of the support table 24 as shown by the phantom line in FIG. 2, and the upper and lower squeezing devices 34 are respectively moved to the outer openings of the upper and lower frames 28 and 30. , 36, a predetermined molding space is formed in the upper and lower frames 28, 30. Then, in such a molding space,
By filling the molding sand from the blow device 42 and compressing and filling in the upper and lower squeeze devices 34 and 36, the desired upper and lower molds can be formed.

In the upper and lower molds thus formed, the support table 24 is returned to the rotating position as shown by the solid line in FIG. 2, and the upper and lower frames 28 and 30 are separated to open the mold. After the pattern plate 32 interposed therebetween is released from the mold and removed, the upper and lower frames 28 and 30 are again overlapped, and the mold removing device 44 places the pattern plate 32 on the receiving plate 48 of the mold receiving device 46. , By cutting the mold,
Take out.

Further, when it is necessary to set the core in the casting space of the mold at the time of removing the die, after removing the pattern plate 32, the upper and lower frames 28, 3 are re-formed.
Before the superposition of 0, the core is set at a predetermined position in the casting space of the lower mold formed in the lower frame 30.

On the other hand, as shown in FIGS. 3 and 4, the storage device 12 for storing the pattern plate 32 used in the molding machine main body 10 includes a vertical mount 50. On both sides in the width direction,
A support chain 56 is provided and spans between the upper and lower sprockets 52, 52 and the lower sprockets 54, 54 mounted thereon. These support chains 56, 56 are connected to each other by a plurality of connecting rods 58 arranged at predetermined intervals in the length direction. And can be circulated.

The support arms 62, 62 suspended from the connecting rods 58 allow the pattern plate 3
2 is supported and stored.

The molding machine body 10 and the storage device 12
A first pattern plate moving device 14 mounted on the molding machine main body 10 for mounting and removing the pattern plate 32 with respect to the molding machine main body 10;
A second pattern plate moving device 16 that is mounted on the storage device 12 and stores or removes the pattern plate 32 from the storage device 12 is provided.

Such a first pattern plate moving device 1
As shown in FIG. 5 and FIG. 6, the transfer table 4 includes a substantially U-shaped transfer table 74 supported by two guide bars 66, 66 provided integrally with the gantry 64. ing. On the transfer table 74, three support portions 68 projecting upward are formed, and the pattern plate 32 is placed on these support portions 68 to support them. Then, the transfer table 74 is connected to the drive piston 7.
0 and the drive motor 72, as shown by solid and imaginary lines in FIGS.
6, 66 are reciprocated in the longitudinal direction.

Thus, the pattern plate 32 supported by the transfer table 74 is transferred to the molding machine main body 10 and supported at a predetermined position (the position indicated by a solid line in FIG. 6), or the molding machine is used. It is taken out of the main body 10 and is supported at a predetermined take-out position (a position shown by a virtual line in FIG. 6). That is, with the upper and lower frames 28, 30 of the molding machine main body 10 opened, the pattern plate 32 supported by the transfer table 74 is positioned between the upper and lower frames 28, 30. By closing the mold, the pattern plate 32 is automatically sandwiched between the upper and lower frames 28, 30. On the other hand, the upper and lower frames 2
By opening the upper and lower frames 28 and 30 when the molds 8 and 30 are opened, the pattern plate 32 released from the upper and lower frames 28 and 30 is automatically placed on the transfer table 74 and supported. Then, by moving the transfer table 74 onto the gantry 64, the pattern plate 32 is removed from the molding machine main body 10.

The second pattern plate moving device 1
As shown in FIGS. 3 and 4, a substantially U-shaped transfer table 78 supported by two guide bars 76, 76 erected so as to extend from the storage device 12. Is provided. The transfer table 78 is formed with three support portions 80 projecting upward. The pattern plate 32 is placed on these support portions 80 and supported. And such a transfer table 78
Are reciprocated in the longitudinal direction of the guide bars 76, 76 as shown by solid and imaginary lines in FIG. 4 by a rodless air cylinder 84 supported by a guide tube 82. I have.

Thus, the pattern plate 32 supported by the transfer table 78 is transferred to and stored in the storage device 12, or taken out of the storage device 12,
It is supported at a predetermined take-out position (the position indicated by the solid line in FIG. 4). The storage device 12
The support arms 62, 6 of the storage device 12 of the pattern plate 32 supported by the transfer table 78 moved to the side.
2 or the support arm 62 of the storage device 12,
The transfer table 7 of the pattern plate 32 supported at 62
The shift to the side 8 is automatically performed by driving the support chain 56 in a predetermined direction.

Further, between the position for taking out the pattern plate 32 by the first pattern plate moving device 14 and the position for taking out the pattern plate 32 by the second pattern plate moving device 16 as described above, the two moving devices 14 are used. , 16 are provided with a pattern plate exchanging device 18 for exchanging the pattern plates 32, 32 supported by the transfer tables 74, 78 with each other.

As shown in FIGS. 6 and 7, the pattern plate exchanging device 18 is rotatably supported around a rotating shaft 86 by a gantry.
8 is provided with a turntable 90 which can be reciprocated 180 °. The turntable 90 has a pair of support frames 9.
The guide cylinders 2 and 92 are mounted to be vertically reciprocable while being guided by guide bars 94 and 94, respectively, and are driven by drive cylinders 96 and 96, respectively. Further, each of the support frames 92 has four support rods 9 extending vertically downward and having a locking claw at the lower end.
The drive cylinder 100 is rotated around the axis so that the locking claws face inward or outward, respectively. Then, the pattern plate 32 can be supported by the locking claws with the locking claws of the support rods 98 facing inward.

Thus, according to the pattern plate exchanging device 18, the first pattern plate moving device 14
Pattern plate 32 taken out to a predetermined position by
And the pattern plate 32 taken out by the second pattern plate moving device 16 are supported by both support frames 92, 92, respectively.
The pattern plates 32 are rotated by 80 °, and then the two support frames 92 are lowered to allow the pattern plates 32 and 32 to be supported by the pattern plate moving devices 14 and 16 again.
The pattern plate supported by the can be replaced.

Therefore, according to the storage device 12, the first and second pattern plate moving devices 14, 16 and the pattern plate exchanging device 18 as described above, when exchanging a pattern plate for molding a mold, a molding machine main body is used. 1
0, the old pattern plate 32 used for molding
At the same time as the first pattern plate moving device 14 takes out, the new pattern plate 32 to be used for molding is taken out of the storage device 12 by the second pattern plate moving device 16, and the new and old taken out are taken out. After the two pattern plates 32, 32 are exchanged by the pattern plate exchanging device 18, the new pattern plate 32 is transferred and mounted on the molding machine main body 10 by the first pattern plate moving device 14, and the next molding operation is performed. On the other hand, the old pattern plate 32 can be transferred and stored in the storage device 12 by the second pattern plate moving device 16.

On the other hand, a core setter 20 is installed on the front side of the molding machine main body 10 separately from such a pattern plate exchange / storage device.

As shown in FIGS. 8 and 9, the core setter 20 includes a pair of horizontally extending guide rails 10 fixed to both sides of a base 102 having a rectangular plate shape.
A vertical movable gantry 106 supported by 4,104 is provided. In addition, those guide rails 104, 10
A ball screw shaft 107 that extends under the movable frame 106 and extends in parallel with the guide rail 104 is provided between the four bases 4 and is supported by the base 102. The motor 108 can be rotated around the axis. The ball nut 11 screwed to the ball screw shaft 107
0 is fixed to the lower part of the movable base 106.

Accordingly, the movable base 106 is
While being guided by the guide rails 104, 104, it can be reciprocated toward and away from the molding machine main body 10.

The movable base 106 is provided with a pair of guide rails 112 extending vertically in the vertical direction. The support housing 120 can be moved vertically in the vertical direction by the guide rails 112 112. Supported. Further, a ball screw shaft 114 extending parallel to the guide rails 112 and 112 is provided and supported inside the movable base 106, and a vertical drive motor 116 attached to the lower end in the axial direction rotates the ball screw shaft 114 around the axis. It is designed to be rotated. The ball nut 1 screwed to the ball screw shaft 114
18 is fixed to the support housing 120.

Thus, the support housing 120 is
While being guided by the guide rails 112, 112, they can be reciprocated vertically.

As shown in FIG. 10, a rotating shaft 122 extending in the moving direction of the movable gantry 106 is disposed inside the supporting housing 120 so as to be rotatable around the axis. ing. A rotation drive motor 124 is provided at the rear (the left end in FIG. 10) of the support housing 120.
Are mounted via a transmission 126. Since the output shaft 128 of the transmission 126 is connected to the rear end of the rotation shaft 122, the rotation shaft 122
Can be rotated about the axis.

Further, a connecting member 13 having a hollow box structure is provided at a front end (right end in FIG. 10) of the rotating shaft 122.
0, a valve housing 132 is attached, and further, with respect to the valve housing 132,
A vacuum plate 134 as a support member is attached. That is, the vacuum plate 134 is vertically displaced together with the support housing 120 by the vertical drive motor 116, and the rotary shaft 1 is rotated by the rotary drive motor 124.
It is designed to be able to rotate around 22.

On the other hand, inside the support housing 120, an annular space 136 is formed at an intermediate portion in the axial direction and is sealed between the rotary shaft 122 and the outer space. . The annular space 136 is connected to an external negative pressure source (not shown) through a pneumatic line 138. In addition, in order to allow the support housing 120 to move up and down, the pneumatic conduit 138 has a flexible tube 140 connected to the support housing 120 over a predetermined length, and a movable frame. 1
In order to allow horizontal movement 06, a portion extending between the movable gantry 106 and the base 102 is constituted by a flexible tube 142. Further, a cable guide 144 is attached to the flexible tube 142, and the flexible tube 14
2 can be prevented from being locally bent.

Further, a hollow hole 146 opened at the front end face is provided inside the rotary shaft 122, and is connected to the space 136 by a communication hole 148 formed in a peripheral wall portion thereof. I have. Through the hollow hole 146, the space 136 communicates with a connection space 150 formed inside a connection member 130 attached to the front end of the rotating shaft 122.

The valve housing 132 attached to the rotation shaft 122 via the connecting member 130 as shown in FIGS.
The first valve housing 15 is located on both sides in the width direction.
It has a second and a second valve housing part 154.

The first valve housing 152 has a lower air passage 156 and an upper air passage 158. The lower air passage 156 is opened on the side where the connection member 130 is attached, and communicates with the connection space 150. On the other hand, the upper air passage 158 has a valve housing 1 on its front side.
32 is connected to a first chamber 164 extending in the width direction, and through a plurality of first ports 166 provided at both ends of the first chamber 164, the side on which the vacuum plate 134 is mounted is connected. It is opened.

The first valve housing 152
The first valve 168 disposed in the air passage 158 communicates the upper air passage 158 with the external space and the negative pressure source communication hole 162 which communicates with the lower air passage 156.
Are selectively opened, so that the upper air passage 158 is selectively communicated with the atmosphere and the negative pressure source.

On the other hand, the second valve housing 15
Similarly, the lower air passage 170 and the upper air passage 1
72, and the lower air passage 170 communicates with the connection space 150 of the connection member 130, while the upper air passage 172 extends in the width direction within the valve housing 132 on the front side thereof. Second chamber 174
Through a plurality of second ports 176 provided in a central portion of the second chamber 174.
An opening is provided on the side to which the vacuum plate 134 is attached.

Then, the second valve housing part 154
The second valve 178 disposed in the air passage 172 communicates the upper air passage 172 with the external space, and the negative pressure source communication hole 182 communicates with the lower air passage 170.
Are selectively opened so that the upper air passage 172 is selectively communicated with the atmosphere and a negative pressure source.

Further, such a valve housing 13
Vacuum plate 134 attached to 2
Has a substantially rectangular flat plate shape as a whole. In addition, a first recess 184 extending continuously in the circumferential direction at the outer peripheral edge is formed on one surface thereof, and a central portion surrounded by the first recess 184 has the first recess 184. A second recess 186 extending substantially over the entire surface is formed.

The first recess 184 is connected to and communicates with the first port 166 provided in the valve housing 132 through the communication hole 188. On the other hand, the second recess 186 has the communication hole 1.
Through 90, it is connected and communicated with a second port 176 provided in the valve housing 132.

That is, the first valve 1
68 and a second recess 184 provided in the vacuum plate 134 based on the switching operation of the second valve 178.
And the second recess 186 are alternatively connected and communicated with the atmosphere or a negative pressure source, respectively.

Thus, the core setter 20 having such a structure holds the core disposed in the casting space of the mold. Here, the core is held. As shown in FIGS. 12 and 13, the vacuum set 134 causes the core set plate 19 to be moved.
2 will be performed.

Here, the core set plate 192 corresponds to an upper model of the pattern plate 32 disposed between the upper and lower frames 28 and 30 during molding by the mold molding machine body 10 inside. Recessed shape 1
94. The illustrated core set plate 192 has a recess 194 having a shape corresponding to a model for obtaining a hollow cylindrical casting, and hollows are provided on both sides of the recess 194, respectively. Steps 198, 19 corresponding to the baseboard of core 196 to form the section
8 are provided.

Further, inside the core set plate 192, suction holes 200, 200 penetrating in the thickness direction and opening to the stepped portions 198, 198, respectively, are provided.

The core set plate 19 as described above
The material and manufacturing method of No. 2 are not particularly limited. For example, by filling a resin material such as rigid urethane foam into a molding cavity formed by using the pattern plate 32 to be used, Those manufactured by transferring 32 models are preferably used. That is, according to such a manufacturing method, it is possible to easily obtain a core set plate provided with the concave portion 194 having a shape corresponding to the model of the pattern plate 32 with high accuracy.

Then, such a core set plate 1
Reference numeral 92 denotes the first and second recesses 18 in the vacuum plate 134 of the core setter 20 as shown.
4,186, the first recess 184
Is supported by being suction-adsorbed by the negative pressure suction force exerted on the substrate.

Further, when supported by the vacuum plate 134 in this manner, each suction hole 200 communicates with the second recess 186 in the vacuum plate 134. Thereby, the negative pressure suction force applied to the second recess 186 is applied to the core 196 disposed in the step portion 198 of the core set plate 192 through the respective suction holes 200. The core 196 is suction-adsorbed to the core set plate 192 and held.

That is, the core 196 is connected to the vacuum plate 1 through the core set plate 192 as described above.
Since the core set plate 192 is held sufficiently at the vacuum plate 134, high positioning accuracy can be easily secured when the core 196 is held, as long as the core set plate 192 is sufficiently positioned with respect to the vacuum plate 134. It is. Further, since the pneumatic conduit for sucking and adsorbing the core 196 is formed with a different system from the pneumatic conduit for sucking and adsorbing the core set plate 192, the core set plate 192 is connected to the vacuum plate 134. The core 196 can be freely adsorbed to and removed from the core set plate 192 in a state where the core 196 is supported.

By the way, the core set plate 192 supported by the vacuum plate 134 of the core setter 20 and holding the core 196 is superimposed on the pattern plate 32 used for molding. As a result, it is stored integrally with the pattern plate 32 in the storage device 12 and transferred to the molding machine main body 10 by the first and second pattern plate moving devices 14 and 16 and the pattern plate exchanging device 18. (See FIGS. 3 to 7). Although not explicitly shown in the drawings, the core set plate 192 is overlapped with the recess 194 formed therein so as to be fitted to a model formed on the pattern plate 32. Will be done.

At the time of molding the mold, the core set plate 192, together with the pattern plate 32, as shown by the imaginary line in FIG.
The movable frame 106 of the core setter 20 is shaped by a horizontal drive motor 108 before the upper and lower frames 28 and 30 are overlapped. The vacuum plate 134 is moved to the machine body 10 side, and the upper and lower frames 28,
It is inserted between 30.

Then, the vacuum plate 13
4 is lowered by the vertical drive motor 116 to be brought into contact with the upper surface of the core set plate 192, and then the first valve 168 is switched to apply a negative pressure to the first recess 184. As a result, the core set plate 192 is suction-adsorbed to the vacuum plate 134. Then, again, the vacuum plate 134
Is raised, the movable frame 106 is moved to the molding machine main body 10.
As a result, the core set plate 192 is separated from the pattern plate 32 and taken out.

Next, as shown by the imaginary line in FIG. 10, the vacuum plate 134 supporting the core set plate 192 is lowered by the vertical drive motor 116 and further rotated by the rotation drive motor 124. It is inverted. Thereby, the core set plate 192
The recess 194 provided in the hole 194 is opened upward, so that the core 196 can be inserted and arranged in the recess 194. And this recess 19
When the second valve 178 is switched to apply a negative pressure to the second recess 186, the core 196 disposed in the fourth 4 is suction-adsorbed to the core set plate 192 ( See FIG. 13). The core 19
After the suction suction of 6, the vacuum plate 134 again
It is inverted.

Also, such a core set plate 19
Simultaneously with the holding operation of the core 196 on the mold 2, the molding operation of the mold in the molding machine main body 10 is performed. Then, after molding, the support base 24 for supporting the upper and lower frames 28 and 30 is rotated to a pivot position as shown in FIG. 8, the upper and lower frames 28 and 30 are separated, and the mold is opened. After the pattern plate 32 is released from the mold,
Vacuum plate 134 holding core 196
Is inserted between the upper and lower frames 28, 30.

Then, at the insertion position of the vacuum plate 134 or after the vacuum plate 134 is lowered to an appropriate height, the suction force to the core 196 is cut off, so that the core 196 is supported in the lower frame 30. It is dropped into the casting space (not shown) of the lower mold and set.

There, the core set plate 192
Before being molded, the vacuum plate 1 is superimposed on the pattern plate 32 and is guided to the suction position by the vacuum plate 134. Therefore, at the time of insertion after the molding, the vacuum plate 1 is placed at the same position as the suction position.
34, the core set plate 192
The recess 194 formed in the inside of the pattern plate 3
Thus, the mold can be positioned with high precision with respect to the casting space of the model formed in 2, and the casting space of the mold formed by the model.

Therefore, such a core set plate 192
The core held by the above can be guided and set with high accuracy to the core setting position in the casting space of the lower mold. Moreover, such a core setting accuracy can be advantageously ensured by a simple structure without requiring a special mechanism such as a positioning pin of the core set plate 192 with respect to the vacuum plate 134.

After the core 196 is set in the mold, the pattern plate 32 is transferred again between the upper and lower frames 28 and 30, and the core set plate is placed on the pattern plate 32. 192 is placed away from the vacuum plate 134 and placed thereon, and thus, together with the pattern plate 32, the first and second pattern plate moving devices 1 are again used.
4, 16 and the pattern plate exchange device 18,
It is moved and stored in the storage device 12.

Therefore, according to the mold making machine equipped with the core setter 20 as described above, the set of the core to the mold is
It can be carried out automatically and with sufficient precision, whereby an improved molding cycle and reduced labor and costs can advantageously be achieved.

Further, in such a mold making machine, the core set plate 192 is integrally stored and transported by being superimposed on the pattern plate 32. 1
This has a great advantage in realizing that no special device or storage space for storing and transporting the 92 is required.

The core set plate 192
Has a recess 194 corresponding to the model formed on the pattern plate 32. Since the recess 194 is overlapped with the model fitted to the model, the core set plate 192 and the pattern It is not necessary to provide a special positioning mechanism and a clamp mechanism between the plate 32 and the like.

Although the embodiments of the present invention have been described in detail, these are literal examples, and the present invention is not construed as being limited to such specific examples.

For example, the recess 194 in the core set plate 192 does not necessarily need to completely coincide with the pattern plate 32 model, and may be overlapped with the pattern plate 32 with sufficient positioning accuracy. And the core can be held at a predetermined position.

In the above embodiment, the support of the core set plate 192 with respect to the vacuum plate 134 and the holding of the core 196 with respect to the core set plate 192 are both performed by suction suction using a negative pressure. However, it is also possible to use a suitable clamping means or the like.

Further, the storage device and the transfer device of the pattern plate 32 are not limited to those of the above-mentioned embodiment, and various structures may be appropriately adopted.

In addition, although not enumerated one by one, the present invention
Based on the knowledge of those skilled in the art, various changes, modifications, improvements and the like can be implemented in an embodiment,
It goes without saying that all such embodiments are included within the scope of the present invention, without departing from the spirit of the present invention.

[0069]

As is apparent from the above description, according to the present invention, the core can be automatically set in the mold, and the pattern plate and the pattern plate in the molding machine main body can be automatically set. Since the core is set in the casting space of the molded mold using the core set plate transferred to the set position, the core is set in the casting space with high accuracy. You can do it.

Further, in the core setting device in the mold making machine according to the present invention, the core set plate is stored and transported integrally with the pattern plate being superposed on the pattern plate. In addition, there is no need for a special device for transporting or a storage space, and there is a great feature that the core set can be automated with a simple structure.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing an entire mold making machine provided with a core setting device having a structure according to the present invention.

FIG. 2 is a view schematically showing a molding machine main body constituting the mold molding machine shown in FIG. 1 and corresponding to a II-II section in FIG.

FIG. 3 is a view corresponding to a section taken along line III-III in FIG.

FIG. 4 is a diagram corresponding to a section taken along line IV-IV in FIG. 3;

FIG. 5 is a plan view schematically showing a first pattern plate moving device constituting the mold making machine shown in FIG.

FIG. 6 is a view corresponding to a section taken along line VI-VI in FIG. 1;

FIG. 7 shows a pattern plate exchanging apparatus constituting the mold making machine shown in FIG. 1;
It is a figure corresponding to a cross section.

FIG. 8 is a longitudinal sectional view of a core setter included in the mold making machine shown in FIG. 1, and is a view corresponding to a section taken along line VIII-VIII in FIG.

9 is a diagram corresponding to a cross section taken along line IX-IX in FIG.

FIG. 10 is an explanatory sectional view showing a main part of the core setter shown in FIG. 8;

11 is a cross-sectional explanatory view showing a main part of the core setter shown in FIG. 8, and is a view corresponding to a XI-XI cross section in FIG.

FIG. 12 is a view corresponding to the XII-XII section in FIG. 11;

FIG. 13 is a view corresponding to a section taken along line XIII-XIII in FIG. 11;

[Brief description of reference numerals]

 DESCRIPTION OF SYMBOLS 10 Modeling machine main body 12 Storage device 14 First pattern plate moving device 16 Second pattern plate moving device 18 Pattern plate exchanging device 106 Movable stand 120 Support housing 122 Rotation axis 132 Valve housing 134 Vacuum plate 168 First valve 178 Second valve 184 First recess 186 Second recess 192 Core set plate 194 recess 196 Core 198 Stepped portion 200 Suction hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-220249 (JP, A) JP-A-61-200633 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B22C 9/10 B22C 11/00-25/00

Claims (3)

(57) [Claims] An upper and lower molding frame is overlapped with a pattern plate on which a model is integrally formed, and a predetermined molding space is formed in each of the upper and lower molding frames, and molding sand is tightened in the molding space. By solidifying, in a main body of a molding machine for molding upper and lower molds having a casting space corresponding to the model, when setting a predetermined core in the molding space of the molded upper and lower molds, Using a core set plate holding the core, having a recess having a shape corresponding to the model on the side, placing the core set plate on the pattern plate, and molding the mold together with the pattern plate After being guided to the set position of the pattern plate between the upper and lower molding frames of the machine body, the supporting member is reciprocated between the set position and a predetermined take-out position. After supporting the core set plate, separating the core from the pattern plate and taking out the core, the core is supported on the core set plate at the removal position, and after the upper and lower molds are formed, the core set is removed. A method for setting a core in a mold making machine, wherein the plate is moved to the setting position again and the core is set in the casting space of the lower mold. 2. An upper and lower molding frame is overlapped with a pattern plate on which a model is integrally formed, and a predetermined molding space is formed in each of the upper and lower molding frames, and molding sand is tightened in the molding space. By solidifying, a separate storage device for storing the pattern plate is separately provided for the main body of the molding machine for forming the upper and lower molds having a casting space corresponding to the model, while the pattern plate stored in the storage device is provided. What is claimed is: 1. A core setting device for a mold making machine, comprising a moving means for guiding and mounting the mold on a mold making machine main body, comprising a recess having a shape corresponding to a model on an upper mold side of the pattern plate, wherein the pattern plate The storage device is superposed on the storage device together with the pattern plate, and is stored together with the pattern plate by the moving means. It is guided to the set position of the pattern plate between the upper and lower flasks of the casting mold making machine body from
A core set plate capable of holding a core set in the casting space, disposed so as to be insertable between upper and lower molding frames of the mold making machine main body, and a set position and a predetermined removal position of the pattern plate. And a support member which is reciprocally driven between the core plate and the core set plate guided to the set position by the moving means is supported by the support member and separated from the pattern plate to be taken out. The core held in the core set plate in the above step is inserted between the upper and lower molding frames of the main body of the mold making machine, and set in the casting space of the mold molded in the lower molding frame. A core setting device in a mold making machine, comprising: a setter. 3. The method according to claim 2, wherein both the support of the core set plate with respect to the support member and the holding of the core with respect to the core set plate are performed by vacuum suction. Core setting device in a mold making machine.