JPH05245582A - Method for setting core in molding machine and core setting equipment therefor - Google Patents

Abstract

PURPOSE:To quickly and automatically set a core into a casting cavity in a mold in high accuracy by using a core set plate shifted to a pattern setting position in a molding machine body together with a pattern plate. CONSTITUTION:At first, at swing position of a supporting table 24, under the condition of arranging the pattern plate 32 integratively forming a pattern corresponding to a casting space in between an upper and a lower flasks 28, 30, these upper and lower flasks 28, 30 are piled and molding sand is filled up to form the upper and lower molds. Thereafter, the supporting table 24 is returned back to the swing position, and the pattern plate is removed and the mold is taken out on a receiving plate 48 in a mold receiving device 46 by a mold taking out device 44. At the time of taking out the mold in such a way, in the case of needing to set a core into molding space in the mold, after the pattern plate 32 is removed and before the upper and lower flasks 28, 30 are again piled, the core can be set in the prescribed position in the mold space in the lower mold formed in the lower flask 30.

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 setting a core in a casting 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]

BACKGROUND ART The mechanization of mold making has been rapidly progressing, and in recent years, the upper and lower molding flasks are superposed with a pattern plate integrally formed with a model sandwiched between them, so that predetermined molding can be performed in each of the upper and lower molding flasks. After forming the molding space, by filling the molding space with molding sand and compacting it, the mold molding machine that performs the work up to molding the upper and lower molds completely automatically is generally used. It has become to. By adopting such a mold making machine, the molding cycle has been remarkably improved.

Incidentally, in a mold for obtaining a cast product having a hollow shape or a complicated 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, since it is necessary to manually set the core after molding the mold, a series of automatic molding operations are interrupted by the setting work by the core. Therefore, there is a problem that the molding cycle is reduced and the mold productivity is reduced.

In order to avoid such a decrease in molding cycle due to the core setting work, a core setting station is provided separately from the molding station and the molded mold is moved to the core setting station. After that, a mold making machine in which a core is set in the casting cavity of such a mold is also proposed.

However, such a two-station type mold making machine is inevitably extremely large, complicated and very expensive. Moreover, since the core set itself has to be manually performed, it requires skill in the work, and it is inevitable that it will be disadvantageous in terms of cost, and there is also a problem that the work itself is dangerous. It was.

[0007]

The present invention has been made in view of the above circumstances, and a problem to be solved by the present invention is to provide a core into a casting cavity of a mold molded by a mold molding machine. It is an object of the present invention to provide a core setting method and a core setting device in a mold making machine capable of automatically and quickly setting with a simple structure and with high accuracy.

[0008]

In order to solve such a problem, in the present invention, upper and lower molding flasks are superposed with a pattern plate integrally formed with a model sandwiched therebetween, and predetermined patterns are respectively placed in the upper and lower molding flasks. In the main body of the mold making machine for forming the upper and lower molds having the molding space corresponding to the model by forming the molding space of the mold and compacting the molding sand in the molding space, At the time of setting a predetermined core in, a core set plate having a recess having a shape corresponding to the model on the upper mold side of the pattern plate is used, and the core set plate is After being placed on the pattern plate and guided to the set position of the pattern plate between the upper and lower molds of the mold making machine main body together with the pattern plate, the set position and The core set plate is supported by a supporting member that can be reciprocally moved to and from a fixed take-out position, separated from the pattern plate, and taken out, and the core set plate is supported at the take-out position. With molding, after molding the upper and lower molds, move the core set plate again to the setting position, a core setting method in a mold molding machine that sets the core in the casting space of the lower mold, It is a feature.

Further, according to the present invention, the upper and lower molding flasks are superposed with the pattern plates integrally formed with the model sandwiched therebetween, and predetermined molding spaces are formed in the upper and lower molding flasks, respectively. By compacting the foundry sand in the space, to the main body of the mold making machine that molds the upper and lower molds having the casting space corresponding to the model, while separately providing a storage device for storing the pattern plate, the storage device A core setting device in a mold making machine, which is provided with a moving means for guiding the stored pattern plate to the main body of the mold making machine and mounting the pattern plate, wherein (a) a shape corresponding to the upper mold side model of the pattern plate. Of the pattern plate, the pattern plate is superposed on the pattern plate, and the pattern plate is stored in the storage device. 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 that is disposed so as to be inserted between the upper and lower molding flasks of the main body of the mold making machine and that can reciprocally drive between the set position and the predetermined take-out position of the pattern plate is provided by the moving means. 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 is A core setter in a mold molding machine configured to include a core setter that is inserted between the upper and lower molding flasks of the mold molding machine body and set in the casting space of the mold molded in the lower molding flask. The device is also one of its features.

Furthermore, according to the present invention, in the core setting device in such a mold making machine, the core setting plate is supported by the supporting member and the core is held by the core setting plate. , Both
The core setting device in the mold making machine adapted to perform vacuum suction is also a feature thereof.

[0011]

The embodiments of the present invention will now be described in detail with reference to the drawings in order to clarify the present invention more specifically.

First, FIG. 1 schematically shows an overall plan structure of a mold making machine constructed according to the present invention. In such a mold making machine, a storage device 12 for storing a plurality of pattern plates is provided separately from the main body 10 of the molding machine, and the pattern plates stored in the storage device 12 are the first and the second. The pattern plate moving devices 14 and 16 and the pattern plate exchanging device 18 are guided to and mounted on the molding machine body 10, or are removed from the molding machine body 10 and stored in the storage device 12. There is. Furthermore, in addition to such a pattern plate exchange / accommodation device, a core setter 20 for setting a core in a mold molded by the molding machine body 10 is provided.

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

That is, when molding a mold by using the mold molding machine 10, first, the upper and lower frames 2 are rotated at the rotating position of the support base 24 as shown by the solid line in FIG.
The upper and lower frames 28, 30 are overlapped with each other while a pattern plate 32, which is integrally formed with a model corresponding to the desired shape of the casting space, is disposed between the upper and lower frames 28, 30. After that, the support base 24 is rotated to the rotation position of the support base 24 as shown by the phantom line in FIG. 2, and the vertical squeeze device 34 is respectively attached to the outer openings of the upper and lower frames 28 and 30. , 36 squeeze heads 38, 40 are fitted into the upper and lower frames 28, 30 to form a predetermined molding space. Then, in the molding space,
The desired upper and lower molds can be formed by filling the molding sand from the blower 42 and compressing and filling it with the upper and lower squeeze devices 34 and 36.

In the upper and lower molds thus formed, the support base 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 from each other to open the mold. After the pattern plate 32 interposed between them is released and removed, the upper and lower frames 28 and 30 are overlapped again, and the mold removing device 44 causes the pattern plate 32 to be placed on the receiving plate 48 of the mold receiving device 46. , By removing the mold
Take it out.

Further, when it is necessary to set the core in the casting space of the mold during such die-cutting, the pattern plate 32 is removed, and then the upper and lower frames 28, 3 are again provided.
Before stacking 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 main body 10 of the molding machine is provided with a vertical mount 50, and the mount 50. On both sides in the width direction of
A support chain 56 is provided and is stretched between the upper sprocket 52, 52 and the lower sprocket 54, 54 mounted on the upper and lower parts. Further, the support chains 56, 56 are connected to each other by a plurality of connecting rods 58 arranged at a predetermined interval in the length direction, and a drive motor 60 drives the lift chains at the same speed. It is designed to be circulated with.

The pattern plates 3 are supported by the supporting arms 62, 62 suspended from the connecting rods 58.
2 is supported and can be stored.

The molding machine body 10 and the storage device 12 are also provided.
And a first pattern plate moving device 14 that is mounted on the molding machine body 10 side and that mounts and removes the pattern plate 32 on and from the molding machine body 10,
A second pattern plate moving device 16 that is mounted on the storage device 12 side and stores or takes out the pattern plate 32 from the storage device 12 is provided.

The first pattern plate moving device 1
As shown in FIGS. 5 and 6, 4 is provided with a transfer base 74 having a substantially U-shaped planar shape supported by two guide bars 66, 66 integrally provided on the base 64. ing. The transfer table 74 is formed with three support portions 68 projecting upward, and the pattern plate 32 is placed on and supported by these support portions 68. Then, the transfer table 74 is connected to the drive piston 7
0 and the drive motor 72, as shown by the solid and phantom lines in FIGS. 5 and 6,
6, 66 can be driven to reciprocate in the longitudinal direction.

As a result, 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 shown by the solid line in FIG. 6), or such a molding machine. It is adapted to be taken out from the main body 10 and to be supported at a predetermined take-out position (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, after positioning the pattern plate 32 supported by the transfer table 74 between the upper and lower frames 28, 30, the upper and lower frames 28, 30 are placed. By closing the mold, the pattern plate 32 is automatically sandwiched between the upper and lower frames 28 and 30, and 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 separated from the upper and lower frames 28 and 30 is automatically placed on and supported by the transfer table 74. Then, by moving the transfer table 74 onto the frame 64 thereafter, the pattern plate 32 is taken out from the molding machine body 10.

Further, the second pattern plate moving device 1
As shown in FIGS. 3 and 4, reference numeral 6 denotes a transfer table 78 having a substantially U-shaped planar shape, which is supported by two guide bars 76, 76 that are installed so as to extend from the storage device 12. Is equipped with. The transfer table 78 is formed with three supporting portions 80 projecting upward, and the pattern plate 32 is placed on and supported by these supporting portions 80. And the transfer table 78
Is reciprocally driven in the longitudinal direction of the guide bars 76, 76 by the rodless type air cylinder 84 supported by the guide tube 82, as shown by solid lines and imaginary lines in FIG. There is.

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

Further, between the take-out position of the pattern plate 32 by the first pattern plate moving device 14 and the take-out position of the pattern plate 32 by the second pattern plate moving device 16 as described above, both moving devices 14 are provided. , 16 for transferring the pattern plates 32, 32 supported by the transfer tables 74, 78 to each other.

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

Thus, according to the pattern plate exchanging device 18, the first pattern plate moving device 14
Pattern plate 32 taken out at a predetermined position by
And the pattern plate 32 taken out by the second pattern plate moving device 16 are respectively supported by both support frames 92, 92, and then the rotary table 90 is set to 1
The pattern plates 32, 32 are rotated by 80 °, and then the support frames 92, 92 are lowered to support the pattern plates 32, 32 again by the pattern plate moving devices 14, 16, respectively.
The pattern plate supported by can be replaced.

Therefore, according to the accommodating device 12, the first and second pattern plate moving devices 14 and 16 and the pattern plate exchanging device 18 as described above, when exchanging the pattern plate for mold making, the molding machine main body is used. 1
The old pattern plate 32 used for molding in
At the same time as taking out by the first pattern plate moving device 14, the new pattern plate 32 used for molding is taken out by the second pattern plate moving device 16 from the storage device 12, and the old and new taken out of them. After exchanging both pattern plates 32, 32 with the pattern plate exchanging device 18, the new pattern plate 32 is transferred to and mounted on the molding machine 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 the 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 rectangular plate-shaped base 102.
A vertical movable mount 106 supported by 4, 104 is provided. In addition, those guide rails 104, 10
A ball screw shaft 107, which extends below the movable mount 106 and extends parallel to the guide rail 104, is provided between the four, and is supported by the base 102. The horizontal drive is attached to one end side in the axial direction. The motor 108 allows the motor 108 to rotate about its axis. Then, the ball nut 11 screwed to the ball screw shaft 107.
0 is fixed to the lower part of the movable mount 106.

As a result, the movable mount 106 is
While being guided by the guide rails 104, 104, they can be moved back and forth in the approaching / separating direction with respect to the molding machine body 10.

The movable mount 106 is provided with a pair of guide rails 112, 112 extending vertically, and the support housing 120 is vertically movable by the guide rails 112, 112. It is supported. Further, a ball screw shaft 114 extending parallel to the guide rails 112, 112 is disposed and supported inside the movable mount 106, and a vertical drive motor 116 mounted on the lower end side in the axial direction rotates the shaft center. It is designed to be rotated. Then, the ball nut 1 screwed to the ball screw shaft 114.
18 is fixed to the support housing 120.

Thereby, the support housing 120 is
While being guided by the guide rails 112, 112, the guide rails 112, 112 can reciprocate vertically.

Further, as shown in FIG. 10, a rotary shaft 122 extending in the moving direction of the movable mount 106 is disposed inside the support housing 120 so as to be rotatable around its axis. ing. Further, the rotation drive motor 124 is provided at the rear portion (left end portion in FIG. 10) of the support housing 120.
Is mounted via the transmission 126. The output shaft 128 of the transmission 126 is connected to the rear end of the rotary shaft 122, so that the rotary shaft 122
However, it can be rotated about its axis.

Further, at the front end portion (right end portion in FIG. 10) of the rotating shaft 122, the connecting member 13 having a hollow box structure is formed.
The valve housing 132 is attached to the valve housing 132 through 0.
A vacuum plate 134 as a support member is attached. That is, as a result, the vacuum plate 134 is displaced vertically with the support housing 120 by the vertical drive motor 116, and the rotary drive motor 124 causes the rotary shaft 1 to move.
It is designed so that it can be rotated around 22.

On the other hand, in the inside of the support housing 120, an annular space 136 is formed in the axially intermediate portion and is sealed from the rotating shaft 122 with respect to the external space. .. The annular space 136 is connected to an external negative pressure source (not shown) through a pneumatic pressure line 138. In addition, in order to allow the vertical movement of the support housing 120, the pneumatic pressure conduit 138 has a flexible tube 140 at a connecting portion to the support housing 120 over a predetermined length, and a movable mount. 1
In order to allow the horizontal movement of 06, a flexible pipe 142 is formed in a portion that straddles between the movable mount 106 and the base 102. Further, a cable guide 144 is attached to the flexible tube 142, and the flexible tube 14 is attached to the flexible tube 142.
It is designed so that the local bending of 2 and the like can be prevented.

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

Further, the valve housing 132 attached to the rotary shaft 122 through the connecting member 130 is, as shown in FIGS. 11 to 13,
Located on both sides in the width direction, the first valve housing portion 15
2 and a second valve housing portion 154.

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

Then, the first valve housing portion 152
The first valve 168 disposed in the upper air passage 158 and the lower air passage 156 communicates with the atmosphere 160 and 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 portion 15
4 similarly, the lower air passage 170 and the upper air passage 1
72 is provided, the lower air passage 170 is communicated with the connection space 150 of the connecting member 130, while the upper air passage 172 extends in the width direction in the valve housing 132 on the front side thereof. Second chamber 174
Through a plurality of second ports 176 provided in the central portion of the second chamber 174,
An opening is provided on the side where the vacuum plate 134 is attached.

Then, the second valve housing portion 154
The second valve 178 disposed in the upper air passage 172 communicates with the atmosphere communicating side through hole 180 that communicates with the outer space and the lower air passage 170 through the negative pressure source communicating side through hole 182.
And are selectively opened, the upper air passage 172 is selectively communicated with the atmosphere and the 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 is formed on one surface of the outer peripheral edge portion so as to extend continuously in the circumferential direction, and a central portion surrounded by the first recess 184 has a first recess 184. A second recess 186 that extends over substantially the entire surface is formed.

The first recess 184 is connected and communicated 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 the second port 176 provided in the valve housing 132.

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

Thus, the core setter 20 having such a structure holds the core arranged in the casting space of the mold, in which the core is held. As shown in FIGS. 12 and 13, the core set plate 19 is provided by the vacuum plate 134.
It will be done through 2.

Here, the core set plate 192 corresponds to the model on the upper side of the pattern plate 32, which is disposed between the upper and lower frames 28 and 30 during the molding by the main body 10 of the mold making machine. Shape recess 1
It has 94. The illustrated core set plate 192 has a recess 194 having a shape corresponding to a model for obtaining a hollow-cylindrical cast product, and a hollow 194 is provided on each side of the recess 194. Step portions 198, 19 corresponding to the skirting portion of the core 196 for forming the portion.
8 are provided.

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

The core set plate 19 like this
The material and manufacturing method of 2 are not particularly limited, but for example, by filling a resin material such as hard urethane foam into a molding cavity formed by using the pattern plate 32 to be used, the pattern plate The one manufactured by transferring 32 models is preferably used. That is, according to such a manufacturing method, it is possible to easily obtain the core set plate including the recess 194 having a shape corresponding to the model of the pattern plate 32 with high accuracy.

And, 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 placed on the opening surface of the first recess 184.
By the negative pressure suction force exerted on, it is supported by being sucked and adsorbed.

When the vacuum plate 134 is thus supported, each suction hole 200 is communicated with the second recess 186 in the vacuum plate 134. As a result, the negative pressure suction force exerted on the second recess 186 is exerted through each suction hole 200 on the core 196 arranged in the stepped portion 198 of the core set plate 192. The core 196 is sucked and held by the core set plate 192 and held.

That is, the core 196 is inserted into the vacuum plate 1 via the core set plate 192 as described above.
Since the core set plate 192 is sufficiently positioned with respect to the vacuum plate 134 by holding the core 196, it is possible to easily secure a high positioning accuracy when holding the core 196. Of. Further, since the air pressure conduit for sucking and adsorbing the core 196 is formed by a system different from that of the air pressure conduit for sucking and adsorbing the core set plate 192, the core set plate 192 is attached to the vacuum plate 134. The core set 192 can be freely attracted and removed from the core set plate 192 under the condition that the core set plate 192 is supported.

By the way, the core set plate 192, which is supported by the vacuum plate 134 of the core setter 20 and holds the core 196 in this way, is to be superposed on the pattern plate 32 used for molding. The pattern plate 32 is integrally stored in the storage device 12, and is 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 clearly shown in the drawing, the core set plate 192 is superposed with the recess 194 formed therein fitted to the model formed on the pattern plate 32. Will be done.

Then, in molding the mold, the core set plate 192 is formed together with the pattern plate 32 as shown in phantom lines in FIG.
The upper and lower frames 28, 30 of the core setter 20 are guided and arranged by the horizontal drive motor 108 before the upper and lower frames 28, 30 are superposed on each other. When the vacuum plate 134 is moved to the machine body 10 side, 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 and brought into contact with the upper surface of the core set plate 192, then the first valve 168 is switched and a negative pressure is exerted on 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
After being raised, the movable mount 106 is moved to the molding machine main body 10
By moving the core set plate 192 away from the pattern plate 32, the core set plate 192 is separated from the pattern plate 32 and taken out.

Then, as shown in phantom 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 rotary drive motor 124. It can be reversed. Thereby, the core set plate 192
Since the recess 194 provided in the recess is opened upward, the core 196 can be inserted and arranged in the recess 194. And this recess 19
The core 196 arranged in No. 4 is suction-adsorbed to the core set plate 192 by switching the second valve 178 and exerting a negative pressure on the second recess 186 ( (See FIG. 13). In addition, such core 19
After suction and adsorption of No. 6, the vacuum plate 134 is again
It can be reversed.

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

Then, at the insertion position of the vacuum plate 134 or after being 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 will be set by being dropped into the casting space (not shown) of the lower mold.

At this point, the core set plate 192
Before being molded, the mold is superposed on the pattern plate 32 and is guided to the suction position by the vacuum plate 134. Therefore, at the time of insertion after molding the mold, the vacuum plate 1 is placed at the same position as the suction position.
By placing 34, the core set plate 192
The recess 194 formed in the inside of the
The model formed in No. 2 and the casting space of the mold formed by the model are positioned with high accuracy.

Therefore, such a core set plate 192
It is possible to guide and set the core held in step 1 with high accuracy to the core setting position in the casting space of the lower mold. Moreover, the core setting accuracy can be advantageously ensured by a simple structure without requiring a special mechanism such as a positioning pin for the core setting 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 will be placed apart from the vacuum plate 134 and placed, so that the pattern plate 32 and the first and second pattern plate moving devices 1 are again placed.
4, 16 and the pattern plate exchange device 18,
It will be 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 core is set in the mold.
It can be carried out automatically and with sufficient accuracy, so that an improvement in the molding cycle and a reduction in labor and cost can be advantageously achieved.

Moreover, in such a mold making machine, since the core set plate 192 is superposed on the pattern plate 32 so as to be housed and transferred integrally, the core set plate 192 is thus stored. 1
This has a great advantage in implementation that no special device or storage space for storing and transporting 92 is required.

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

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

For example, the recess 194 in the core set plate 192 does not necessarily have to be completely aligned with the model of the pattern plate 32, but should be superposed on the pattern plate 32 with sufficient positioning accuracy. It is sufficient if the core can be held at a predetermined position.

In the above embodiment, the core set plate 192 is supported by the vacuum plate 134 and the core 196 is held by the core set plate 192 by suction suction by negative pressure. However, it is also possible to use other suitable clamping means or the like.

Furthermore, the accommodating device, the transferring device, etc. of the pattern plate 32 are not limited to those of the above-mentioned embodiment, and various structures can be adopted as appropriate.

Although not listed one by one, the present invention
Based on the knowledge of those skilled in the art, it can be implemented in various modified, modified, and improved modes, and
It goes without saying that all such embodiments are included in 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, it is possible to automatically set the core in the mold, and, in addition, 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 that has been moved to the set position, it is possible to set the core in the casting space with high accuracy. It can be done.

Further, in the core setting device of the mold making machine according to the present invention, the core set plate is superposed on the pattern plate and is integrally stored and transferred, so that the core set plate is stored. Moreover, it has a great feature that it does not require a special device for transportation or a storage space and can automate the core set with a simple structure.

[Brief description of drawings]

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

FIG. 2 is a view corresponding to a II-II cross section in FIG. 1, schematically showing a molding machine main body which constitutes the mold molding machine shown in FIG. 1.

3 is a view corresponding to a III-III section in FIG. 1. FIG.

FIG. 4 is a view corresponding to a section taken along line IV-IV in FIG.

5 is a plan view schematically showing a first pattern plate moving device which constitutes the mold making machine shown in FIG. 1. FIG.

6 is a view corresponding to a VI-VI cross section in FIG. 1. FIG.

FIG. 7 is a VII-VII in FIG. 6 showing a pattern plate exchange device which constitutes the mold making machine shown in FIG.
It is a figure corresponding to a cross section.

8 is a vertical cross-sectional view of the core setter that constitutes the mold making machine shown in FIG. 1, and is a view corresponding to a VIII-VIII cross section in FIG. 9. FIG.

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

10 is a cross-sectional explanatory view showing a main part of the core setter shown in FIG.

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. 13;

12 is a view corresponding to a cross section taken along line XII-XII in FIG. 11.

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

[Simple explanation of symbols]

 10 Molding Machine Main Body 12 Storage Device 14 First Pattern Plate Moving Device 16 Second Pattern Plate Moving Device 18 Pattern Plate Exchange Device 106 Movable Stand 120 Support Housing 122 Rotating Shaft 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

Claims (3)

[Claims] 1. The upper and lower molding flasks are superposed with a pattern plate integrally formed with a model sandwiched therebetween, and predetermined molding spaces are formed in the upper and lower molding frames, respectively, and casting sand is tightened in the molding space. In the mold making machine body for molding the upper and lower molds having the casting space corresponding to the model by hardening, when setting a predetermined core in the casting space of the molded upper and lower molds, the upper mold of the pattern plate Using a core set plate that holds the core, the core set plate is placed on the pattern plate, and the mold molding is performed together with the pattern plate. After being guided to the set position of the pattern plate between the upper and lower molding flasks of the machine body, a support member that can reciprocate between the set position and a predetermined take-out position The core set plate is supported, separated from the pattern plate and taken out, and at the take-out position, the core set plate is made to support the core, and after the upper and lower molds are formed, the core set is set. A core setting method in a mold making machine, which comprises moving the plate again to the setting position and setting the core in the casting space of the lower mold. 2. The upper and lower molding flasks are superposed with a pattern plate integrally formed with a model sandwiched therebetween, and predetermined molding spaces are formed in the upper and lower molding frames, respectively, and casting sand is tightened in the molding space. By hardening, the main body of the mold making machine for molding the upper and lower molds having the casting space corresponding to the model is separately provided with a storage device for storing the pattern plate, while the pattern plate stored in the storage device is A core setting device in a mold making machine provided with a moving means for guiding and mounting it in the main body of the mold making machine, having a recess having a shape corresponding to the upper mold side model of the pattern plate, and the pattern plate It is placed on top of the other and is stored in the storage device together with the pattern plate, and the storage device 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, and arranged so as to be insertable between the upper and lower molding flasks of the mold making machine main body, and a set position and a predetermined take-out position of the pattern plate. A support member that can be reciprocally driven between the core plate and the core set plate guided to the set position by the moving means, and separated and taken out from the pattern plate at the same time. In, the core held against the core set plate is inserted between the upper and lower flasks of the main body of the mold making machine and is set in the casting space of the mold molded in the lower flask. A core setting device in a mold making machine, comprising a setter. 3. The support according to claim 2, wherein the core set plate is supported by the support member and the core is held by the core set plate by vacuum suction. Core setting device in the mold making machine of.