JP2012081485A - Mold molding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold molding device which can efficiently perform additional work without stopping a molding process.SOLUTION: The mold molding device 2 comprises: a squeeze table 6; a model mold platen 10 which is placed on the squeeze table, and ascended and descended; a casting frame 26 which forms a model space into which casting sand 24 is filled together with the model mold platen; and a casting frame delivery device 30 which is arranged between the squeeze table and a squeeze head 34, transfers the casting frame in a prescribed position of a model passage and supports it, and delivers the casting frame to the squeeze table. A work space S in which at least one of the attachment work of a cooling metal 37 performed on the model mold platen, the arrangement work of facing sand, and the installation work of a heat generation sleeve can be performed is formed between the model mold platen placed on the squeeze table 6 located at an original position and the casting frame delivery device 30.

Description

  The present invention relates to a mold making apparatus that performs ancillary work on a model surface plate before making a mold on a mold making apparatus.

  Conventionally, a molding space formed by a model surface plate and a casting frame surrounding the model surface plate is filled with casting sand, and the model surface of the model surface plate provided with a model from the back side formed as a mold A casting mold filled in a casting frame is hardened by a squeeze of a squeeze head that moves along a vertical molding path from the side to mold a mold.

  However, the high-temperature metal poured into the mold may not be able to be formed with high precision dimensions or may cause product defects unless the metal is cooled evenly. In addition, it is required to smoothly form the surface of the cast article, thereby reducing subsequent mechanical processing of the cast article removed from the mold and improving the finished dimensional accuracy.

  For this reason, additional operations such as chilling metal for cooling the casting uniformly, setting of the heat generating sleeve, and skin sand covering for smoothing the casting surface are added to the molding process as necessary.

  As conventional example 1, for example, as shown in FIGS. 10 and 11, a master plate 103 on which an upper mold making model 101 and a model surface plate 102 are placed, a lower mold making model 104 and a model surface plate 105 are placed. The turntable 108 provided symmetrically with respect to the rotating shaft 107 is placed between the molding position 110 in the molding station 109 and the incident work position 112 for assembling the cooling metal 111 to the model 101. The upper and lower model surface plates 102 and 105 are alternately carried into and out of the molding station 109. The upper and lower model surface plates 102 and 105 carried into the molding station 109 are respectively squeezed with casting sand after the casting frame 113 is set.

  Further, in the high-speed molding equipment as Conventional Example 2, as shown in FIG. 12, in order to increase the number of moldings, an upper molding machine 120 and a lower molding machine 121 are installed on one line. There is a case. The upper mold frame 122 and the lower mold frame 123 are alternately arranged on a transfer lane (cast frame delivery device) 119 above the model surface plate and intersecting the upper part of each molding machine 120, 121. The upper mold-dedicated molding machine 120 and the lower mold-dedicated molding machine 121 are provided for two strokes of the width of the casting frame, and the casting frames 122, 123 are fed by two strokes of the casting frame width. As a result, empty casting frames are carried into the respective molding machines 120 and 121, and the upper mold and the lower mold are simultaneously formed. When the incidental work such as setting of the cooling metal 111 is not performed, the upper-dedicated model 124 and the lower-dedicated model 125 cross the transport lane 119 and are always waiting in the respective molding machines 120 and 121. Therefore, it is not necessary to change the model (upper model dedicated model or lower model dedicated model) by the turntable 108 for each molding. Then, when changing the type of the product, the turntable 108 is used to exchange with another type of the upper dedicated model 129 or the lower dedicated model 130, respectively.

  However, when the cooling metal 111 is set by the work method using the turntable 108 of the conventional example 1, the cooling metal 111 is set on the model at the incidental work position 112 and then transferred to the molding position 110 of the molding station 109. The turntable 108 is rotated. For this reason, the cooling metal 111 may be displaced from a predetermined position of the model due to centrifugal force due to the rotation of the turntable 108 or an impact in the middle of the rotation. As a countermeasure, there is a case where a magnet is embedded on the model side and the cooling metal 111 is fixed to the model. However, when the shape of the cooling metal 111 is complicated or when it is difficult to embed a magnet in the model, a casting sand for fixing the cooling metal 111 is prepared, and the casting sand is placed around the cooling metal to perform manual work. There are cases where operations such as squeezing the casting sand covered with slab and fixing the cooling metal occur. Thus, it is very troublesome to fix the cooling metal 111 by hand, and there is a problem that it is necessary to embed a magnet for each model by a machine, resulting in an increase in equipment cost.

  In addition, in the high speed molding equipment of the conventional example 2, when performing ancillary work such as setting of the cooling metal 111, the transportation in the transportation lane is temporarily stopped, and a model for setting the cooling metal 111 is attached from the molding position 110. The work is rotated to the position 112 by the turntable 108 and the chiller 111 is set and then returned to the molding position 110. For this reason, the molding process is stopped at the molding position 110 and the extra movement of rotating the turntable 108 causes inconveniences such as a significant increase in the molding cycle.

  Further, a model 133 that does not set the cooling metal 111 is placed in advance in the incidental work position 112, and as shown in FIG. 12, a model 133 that does not set the cooling metal 111 and a model 134 that sets the type. It is possible to carry out molding without stopping the molding process by alternately carrying in the molding position 110 with the turntable 108, but in this case, since two types of products are produced alternately, There was a problem that it was difficult to plan and produced extra products.

  The present invention has been made in view of such conventional problems, and an object thereof is to provide a mold making apparatus that can efficiently perform ancillary work on a model surface plate without stopping the molding process. It is.

  The structural feature of the invention according to claim 1 is that the drive device moves up and down between an original position and a squeeze position above the original position, and at the squeeze position, along the molding path with respect to the squeeze head. And a model surface plate mounted on the upper surface of the master plate placed on the squeeze table and moved up and down, and a molding space filled with foundry sand is formed together with the model surface plate. A casting frame delivery device provided between the squeeze table and the squeeze head, carrying the casting frame to a predetermined position of the molding path, and supporting the casting frame to the squeeze table. In the mold making apparatus comprising: the model surface plate between the model surface plate placed on the squeeze table located at the original position and the cast frame delivery device. Performing chill attachment of, is that of providing a work space that can perform at least one task of the working of the arrangement of facing sand and installation of heat generating sleeve.

  A structural feature of the invention according to claim 2 is that, in claim 1, intrusion prevention means for preventing entry from the outside into the work space during squeeze work by the squeeze table and the squeeze head is provided. is there.

  According to the first aspect of the present invention, when the squeeze table is located at the original position, the cooling metal performed on the model surface plate between the model surface plate placed on the squeeze table and the casting frame delivery device. A working space is provided in which it is possible to perform molding-related incidental work such as attachment of skin, arrangement of skin sand and installation of a heat generating sleeve. Therefore, before the model surface plate is raised and superposed on the casting frame, the above-described incidental work can be performed at the position as it is without moving the model surface plate. In the present invention, since there is no need for the extra work of moving to the incidental work position on the turntable, performing the incidental work, and returning to the original position as in the prior art, the molding cycle can be shortened.

  For example, even when setting the cooling metal, only the vertical movement moves to the squeeze position, and the cooling metal does not deviate from the predetermined position of the model, and the magnet is embedded in the conventional model or is cast. There is no need to hold down the chill metal with sand.

  In addition, even in high-speed molding equipment that installs dedicated molding machines for the upper and lower molds on one line, it is possible to perform incidental work on the model molded in the molding station as it is. Therefore, it is not necessary to carry out two kinds of products.

  According to the invention according to claim 2, since the entry preventing means is employed so as not to enter the work space from the outside during the squeeze work, for example, it is prevented that the worker accidentally puts the hand into the work space. And a safe mold making apparatus can be provided.

The side view which shows the outline | summary of 1st Embodiment of the mold making apparatus of this invention. The front view which shows the outline | summary of a mold making apparatus. The top view which shows the outline | summary of a mold making apparatus. The figure which shows the state which has a squeeze table in its original position and can perform incidental work. The figure which shows the process in which a squeeze table goes up and a foundry sand is filled into the superposed | polymerized cast frame and the overlay frame. The figure which a squeeze table raises and shows a squeeze process. The figure which a squeeze table descends and shows a demolding process. The top view which shows the outline | summary of 2nd Embodiment of a mold making apparatus. The figure which used the shielding wall as an approach prevention means. The side view which shows a prior art example. The top view which shows a prior art example. The top view which shows the high-speed molding equipment of a prior art example. The top view which shows the case where the cooling metal in the high speed molding equipment of a prior art example is set.

  A first embodiment using a mold making apparatus according to the present invention will be described below with reference to the drawings. The mold making apparatus 2 includes a squeeze table 6 for raising and lowering master plates 12 and 18 having a model surface plate 4 fixed on the upper surface along a vertical shaping path, and an upper mold model to which an upper mold making model 8 is fixed. A master plate receiver for mounting and supporting as a unit a master plate 12 on which the surface plate 10 is mounted and a master plate 18 on which the lower surface model surface plate 16 to which the lower mold forming surface 14 is fixed is mounted. A base 20, a master plate exchanging device 22 that carries the master plate receiving base 20 into and out of the molding position, a casting frame 26 that forms a molding space filled with the casting sand 24 by being superimposed on the model surface plates 10 and 16; Molding space formed by an upper frame 28 placed on the cast frame 26, a cast frame delivery device 30 for carrying in and out the cast frame 26, and the model surface plates 10, 16, the cast frame 26 and the upper frame 28. Casting sand 24 And a squeeze head 34 that squeezes the foundry sand 24 in the molding space, which is indexed at a position facing the squeeze table 6 and raised by the ascent of the squeeze table 6, from the back side. ing. In addition, a sensor device 38 is provided as an entry preventing means on the front side (left side in FIG. 1) of the base frame 36 that forms the outer shape of the mold making apparatus 2.

  As shown in FIG. 1, the squeeze table 6 is formed in a rectangular cross section, and is fixed to the upper end of the piston 44 of the cylinder device 42 fixed to the base 40 so as to advance and retract in the vertical direction.

  At a position surrounding the squeeze table 6, as shown in FIGS. 1, 2, and 3, a master plate receiving base 20 extending in the horizontal direction in a rectangular frame shape is disposed. A master plate 12 on which the upper model surface plate 10 is mounted and a master plate 18 on which the lower model surface plate 16 is mounted are detachably mounted on both sides of the master plate base 20. Yes. The master plate receiving base 20 is placed on a master plate exchanging device 22 extending in the horizontal direction.

  The master plate exchanging device 22 has a pair of roller conveyors 46 that are horizontally mounted on a base frame 36 erected on a base 40 and extend parallel to each other in the horizontal direction. The roller conveyor 46 supports the lower end of the master plate cradle 20 so that it can be engaged and disengaged and can roll. One of the master plate 12 to which the upper model surface plate 10 is fixed and the master plate 18 to which the lower model surface plate 16 is fixed is positioned at an exchange position facing the squeeze table 6. The master plates 12 and 18 are delivered and placed on the squeeze table 6 raised by the cylinder device 42.

  A cast frame delivery device 30 is placed between the opposed base frames 36 above the upper model surface plate 10 on the master plate 12 placed on the master plate receiving base 20, for example, at a position of H = 600 mm. Yes. The height position of the squeeze table 6 that receives the master plate 12 from the master plate changer 22 when the squeeze table 6 is lifted from the lower end corresponds to the “original position”. Speaking of the position of the upper model surface plate 10, the upper model surface plate 10 on the master plate 12 mounted on the master plate receiving base 20 (mounted on the master plate changer 22). It is the same as the height position. The space between the upper surface of the upper mold model surface plate 10 and the lower end of the casting frame delivery device 30 is 600 mm, and the space formed between the opposing base frames 36 is accompanied by an attachment operation of the cooling metal 37. A work space S in which work can be performed is configured.

  The casting frame delivery device 30 includes an upper roller conveyor 52 comprising a pair of roller support members 48 extending in parallel with each other in the horizontal direction and a plurality of rollers 50 facing the inside of the roller support member 48 so as to be rotatable. Has mainly. The upper roller conveyor 52 supports the lower surfaces on both sides of the casting frame 26 so as to be detachable. Then, the cast frame 26 to be cast is positioned at the cast frame delivery position 30 facing the squeeze table 6 in the molding path by a stop device (not shown) on the upper roller conveyor 52, and is raised by the cylinder device 42. The master plate 12 placed on the table 6 is raised to a forward position by the cylinder device 42, and the casting frame 26 is received from the upper roller conveyor 52 on the casting frame contact surface (upper surface) on the master plate 12. Yes. In the casting frame delivery device 30, an upper frame support member 54 protrudes upward from the upper part of each roller support member 48, and the upper frame frame 28 is supported by the upper frame support member 54 from below. The upper frame support member 54 is a bar provided with a tapered guide portion (not shown) at the tip, and each of the support holes provided at the four corners of the lower surface of the upper frame 28 with the tip of the upper frame support member 54. (Not shown) is detachably fitted. The upper frame support member 54 is formed longer than the height of the casting frame 26 and supports the upper frame 28 with a gap between the upper surface of the casting frame 26 and the lower surface of the upper frame 28. . The upper frame 28 placed on the cast frame 26 is held above the cast frame 26 by the upper frame support member 54. As the squeeze table 6 is raised by the cylinder device 42, the master plate 12 is placed on the squeeze table 6, and the casting frame 26 is superposed on the master plate 12, and the overlay frame 28 is further superposed on the casting frame 26.

  A shuttle device 56 that moves in the horizontal direction is provided above the casting frame delivery device 30, and the foundry sand supply device 32 and the squeeze head 34 are juxtaposed with the shuttle device 56. The foundry sand supply device 32 and the squeeze head 34 are indexed and positioned at a sand supply position and a squeeze position by a shuttle cylinder (not shown) of the shuttle device 56, respectively.

  The foundry sand supply device 32 is provided with a shutter (not shown) made up of a plurality of bottom plates at the lower end of a container body (not shown) for storing the foundry sand 24, and the shutter is rotated around a horizontal axis by a not-shown rotating device. Moved. When the bottom plate of the shutter is rotated horizontally, the foundry sand 24 is stored, and when the bottom plate is rotated vertically, the foundry sand 24 falls. When it is indexed to the sand supply position by the shuttle device 56, the foundry sand supply device 32 faces the polymerized casting frame 26 and the overlay frame 28, and the weighed foundry sand 24 is filled in the frame.

  As shown in FIG. 1, the squeeze head 34 has a squeeze plate portion 58 that can be inserted into a superposed frame and presses the upper surface of the foundry sand 24 in the frame raised by the squeeze table 6 rising. is doing.

  The sensor device 38 is provided inside the base frame 36 on the front side (left side in FIG. 1). When the master plates 12 and 18 are placed on the master plate exchanging device 22, a plurality of pieces are provided at predetermined intervals from the position of the upper surface of the model platen 10 or 16 of the master plates 12 and 18 to the lower surface of the casting frame delivery device 30. An optical sensor 68 is disposed. In the optical sensor 68, for example, a light emitting unit such as a laser or a diode and a light receiving unit that receives light from the light emitting unit are disposed to face each other, and a light beam is passed between the light emitting unit and the light receiving unit facing each other. When a foreign object enters between the opposing light emitting unit and light receiving unit and the light beam is blocked, the alarm device is turned on, for example, an alarm by sound, rotation of an alarm light by light, an emergency stop of the mold casting device Etc. are made. When the squeeze table 6 is at the lower end or the original position, the sensor device 38 is in an off state.

  Next, the operation of the mold making apparatus 2 configured as described above will be described below with reference to the drawings. First, as shown in FIG. 2 and FIG. 4, the foundry sand supply device 32 is indexed to the sand supply position by the shuttle device 56, and is disposed to face the squeeze table 6. At that time, between the squeeze table 6 and the foundry sand supply device 32, the master plate 12 placed on the master plate changer 22, the upper model surface plate 10 placed and fixed on the master plate 12, and An upper mold making model 8 fixed on the surface of the upper mold model surface 10 is disposed. Further, a casting frame 26 held at the delivery position of the casting frame delivery device 30 and an upper frame 28 supported by the upper frame support member 54 are arranged above the upper mold surface plate 10.

  At this time, between the upper mold surface plate 10 and the casting frame delivery device 30, a work space S in which an operator can perform incidental work for molding on the upper mold surface plate 10. In this embodiment, an operation of setting the cooling metal 37 on the upper mold surface plate 10 is performed.

  Next, as shown in FIG. 5, the lower cylinder device 42 is driven to raise the squeeze table 6, and the master plate 12 is placed on the squeeze table 6.

  Next, when the squeeze table 6 is further raised, the casting frame 26 is received from the casting frame delivery device 30, and the casting frame 26 is placed on the upper surface (casting frame contact surface) of the master plate 12. Subsequently, by raising the squeeze table 6, the upper frame 28 is received from the upper frame support member 54 and the upper frame 28 is placed on the upper surface of the casting frame 26. In this manner, a molding space is formed by the inner surfaces of the polymerized casting frame 26 and the upper frame 28 and the surfaces of the upper model surface plate 10 and the upper mold model 8.

  Next, the foundry sand 24 weighed and stored in the foundry sand supply device 32 is thrown into the molding space by the bottom plate of the shutter being turned vertically by the turning device of the foundry sand supply device 32. The

  Next, the squeeze head 34 is indexed to the squeeze position by driving the shuttle cylinder of the shuttle device 56 and faces the squeeze table 6.

  Then, as shown in FIG. 6, the cylinder device 42 is driven to further raise the squeeze table 6, so that the cast frame 26, the upper frame 28, and the squeeze head 34 are inserted into the upper part of the upper frame 28. The upper model platen 10 is raised. Then, the squeeze table 6 is further raised and squeezed from the back side of the mold to be molded.

  When the rear side squeeze is completed, as shown in FIG. 7, the squeeze table 6 is lowered by the cylinder device 42, the upper frame 28 is placed on the upper frame support member 54, and is separated from the cast frame 26. Is transferred to the casting frame delivery device 30 to leave the master plate 12 (demolding step). The cast frame (including the mold) 26 placed on the cast frame delivery device 30 is conveyed to an unillustrated pouring station by the upper roller conveyor 52. Before the squeeze table 6 is lowered to the lower end, the master plate 12 is transferred onto the master plate changer 22. Then, the squeeze table 6 is positioned at the descending end.

  Next, following the upper mold making, the master plate 18 to which the lower mold making model 14 is attached is positioned at the replacement position, and the empty casting frame 26 is positioned at the casting frame delivery position, and the above cycle is repeated. It is.

  According to the mold making apparatus 2 configured as described above, when the squeeze table 6 is located at the original position, between the model surface plate 10 placed on the squeeze table 6 and the casting frame delivery apparatus 30, There is provided a work space S in which a molding incidental operation such as attachment of the cooling metal 37 performed on the model surface plate 10, arrangement of skin sand, and installation of a heat generating sleeve can be performed. Therefore, before the model surface plate 10 is raised and superposed on the cast frame 26, the above-described incidental work can be performed at the same position. In the present invention, since there is no need for the extra work of moving to the incidental work position on the turntable, performing the incidental work, and returning to the original position as in the prior art, the molding cycle can be shortened.

  Further, for example, even when the chiller 37 is set, the movement to the squeeze position is only in the vertical direction, and the chiller 37 is not displaced from a predetermined position of the model, and the magnet is embedded in the conventional model. There is no need to hold down the chill metal with casting sand.

  In addition, sensor devices and alarm devices are provided so that the work space S does not enter from the outside during the squeeze work, so that, for example, an operator can avoid accidentally placing his / her hand in the work space during the squeeze work. And a safe mold making apparatus can be provided.

Next, a second embodiment using the mold making apparatus according to the present invention will be described below with reference to the drawings.
The mold making apparatus 80 of this embodiment is a high-speed molding facility, and as shown in FIG. 8, an upper mold-dedicated molding machine 82 and a lower mold-dedicated molding machine 84 are installed on one line. A master plate changer (roller conveyor) 86 is horizontally mounted across a molding machine 82 dedicated to the upper mold and a molding machine 84 dedicated to the lower mold, and a casting frame delivery device (not shown) is disposed above the master plate changer 86. (Upper roller conveyor) is provided in parallel to the master plate changer 86. In each of the casting frame delivery devices, an upper mold casting frame and a lower mold casting frame (not shown) are alternately arranged. Between the upper mold molding machine 82 and the lower mold molding machine 84, Between the two strokes of the width of the casting frame is provided. Then, the upper mold and the lower mold are fed by two strokes of the width of the cast frame, and the upper mold and the lower mold are respectively used. By being carried into the molding machines 82 and 84, the upper mold and the lower mold are molded at the same time. In addition, the working space S for performing ancillary work such as setting of the cooling metal 37 is provided in each of the molding machine 82 dedicated to the upper mold and the molding machine 84 dedicated to the lower mold. In the present embodiment, the cooling metal 37 is also mounted on the lower mold. It is supposed to be set. In addition, the master plate support 20 in the molding machine 82 dedicated to the upper mold and the molding machine 84 dedicated to the lower mold has master plates 88 and 90 on which a model currently used for molding and a model surface plate are placed, A model used when making another type of mold and a master plate 92, 94 on which a model surface plate is placed are respectively placed. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In the mold making apparatus 80 of the present embodiment, the casting sand supply device is indexed to the sand supply position in each of the upper mold dedicated molding machine 82 and the lower mold dedicated molding machine 84 by the shuttle device (not shown). The squeeze table 6 is disposed so as to face the upper side. The upper mold frame and the lower mold frame alternately arranged in the cast frame delivery device are respectively carried into the upper mold molding machine 82 and the lower mold molding machine 84, and each molding is performed. It is arranged to face the squeeze tables of the machines 82 and 84.

  At that time, between the squeeze table 6 and the foundry sand supply device, the upper mold surface plate 10 mounted on and fixed to the master plates 88 and 90 mounted on the master plate changer 86, and the upper mold An upper mold making model 8 fixed on the surface of the model surface plate 10 is arranged, and fixed on the surface of the lower surface model surface plate 16 and the lower surface model surface plate 16 mounted and fixed on the master plate 90. The lower mold making model 14 is arranged. Further, above the upper mold model surface 10 and the lower model surface 16, both held at the delivery position of the cast frame delivery device are supported by the unillustrated cast frame and the upper frame support member. An overlay frame is placed.

At this time, the operator puts the model platen between the upper mold model platen 10 and the cast frame delivery device 30 (reference FIG. 1) and between the lower mold model platen and the cast frame delivery device. Since the work space S capable of performing the additional work for molding is provided, for example, the cooling metal 37 can be set on each model surface plate 10.
Since other operations are the same as those in the first embodiment, the description thereof is omitted.

  According to the mold making apparatus 2 configured as described above, even in a high-speed molding facility in which dedicated molding machines 82 and 84 for the upper mold and the lower mold are installed on one line, the model is molded in the molding station. On the other hand, incidental work can be performed at the same position. Therefore, it is necessary to work to prevent the stop of the molding process by unloading the model for setting the cooling metal to the auxiliary work position provided separately and bringing another type of model placed at the auxiliary work position into the molding position. Therefore, the production of two types of products as in the past does not occur.

  In the above-described embodiment, the height H from the upper surface of the model surface plate to the lower end of the casting frame delivery device is 600 mm. However, the height is not limited to this, and the height is determined by arranging a cooling metal or the like. It is determined as appropriate depending on the size of the cast frame, the size of the cast frame, the height of the model, etc., and is set in the range of 500 mm to 700 mm, for example.

  Further, the incidental work is not limited to a set of cooling metal for uniformly cooling the casting, and for example, incidental work such as setting of the heat generating sleeve and skin sand covering for smoothing the casting surface can be performed.

  In addition, although only the back side squeeze is performed in the squeeze operation, the present invention is not limited to this. For example, a superposition frame is superimposed on the bottom of the casting frame on which the upper formation frame is superimposed. The squeeze from the model surface side may be performed by pressing the squeeze table from the model surface side after the back side squeeze and moving the model surface plate relative to the casting frame upward.

  Further, in the above embodiment, the intrusion prevention means is a combination of a sensor, an alarm sound, an alarm light, etc., but is not limited to this. For example, as shown in FIG. In addition, the shield wall 98 may be lifted to close the work space after the incidental work is finished (during squeeze work). The vertical movement of the shielding wall 98 is performed, for example, by providing a pulley (not shown) at the top, providing a shielding wall at one end of the wire hung on the pulley, and providing a weight at the other end, and rotating the pulley. . Further, the shielding wall 98 may be moved up and down by an air cylinder or the like whose operation is controlled by a solenoid valve.

  Thus, the specific configuration described in the above-described embodiment is merely an example of the present invention, and the present invention is not limited to such a specific configuration. Various embodiments can be adopted without departing from the scope.

  2 ... Mold making device, 4 ... Model platen, 6 ... Squeeze table, 10 ... Model platen (model plate for upper mold), 12 ... Master plate, 16 ... Model platen (model plate for lower mold), DESCRIPTION OF SYMBOLS 18 ... Master plate, 24 ... Foundry sand, 26 ... Cast-frame, 30 ... Cast-frame delivery apparatus, 34 ... Squeeze head, 37 ... Cooling metal, 38 ... Intrusion prevention means (sensor device), 52 ... Cast-frame delivery apparatus (upper part) Roller conveyor), 80 ... mold making apparatus, 88, 90, 92, 94 ... master plate, S ... work space.

Claims (2)

A squeeze table that moves up and down between the original position and the squeeze position located above the original position by the drive device, and that moves relative to the squeeze head along the molding path at the squeeze position;
A model surface plate mounted on the upper surface of the master plate placed on the squeeze table and moved up and down;
A casting frame that forms a molding space filled with foundry sand together with the model surface plate;
A casting frame delivery device that is provided between the squeeze table and the squeeze head, carries the casting frame into a predetermined position of the molding path, supports the casting frame, and delivers the casting frame to the squeeze table;
In a mold making apparatus equipped with
Between the model platen placed on the squeeze table located at the original position and the cast frame delivery device, mounting of cooling metal performed on the model platen, arrangement of skin sand, and heating sleeve A mold making apparatus, characterized in that a working space is provided in which at least one of the installation works can be performed.   2. The mold making apparatus according to claim 1, further comprising intrusion prevention means for preventing entry of the work space from the outside during a squeeze operation by the squeeze table and the squeeze head.

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