JPH049066Y2 - - Google Patents

Description

[Detailed explanation of the invention] Purpose of the invention (1) Industrial application field This invention is a medium for inserting a core into the mold hole of a vertically split sand mold formed by a molding machine and extruded onto the table top surface. This invention relates to a child insertion device.

(2) Conventional technology Conventionally, a core insertion device that sets a core into the mold cavity of a vertically split sand mold molded by a molding machine is connected to the molding machine, and the core inserted into the mold is extruded to the outside after being molded by the molding machine. A pedestal frame is provided above the table that receives the vertically split sand molds sequentially in a jointed manner so as to intersect with the table and protrude to the side of the table. is mounted with a movable trolley that reciprocates upward from one end of the table, and a core holder mounting plate is suspended from the lower surface of the movable trolley in a direction intersecting the moving direction of the movable trolley; The core holder is replaceably clamped to the surface of the core holder mounting board by a clamp rod of a clamp cylinder provided on the core holder mounting board.

Furthermore, the core holder is provided with a core socket on its board surface, and the core socket is communicated with a decompression chamber provided on the board surface of the core holder mounting board, and the core socket is connected to the core socket from the decompression chamber. This is to hold the core whose end is inserted into the core socket while applying negative suction pressure.

Therefore, when setting the core into the mold hole of the sand mold at the end of the vertically split sand mold row that is molded in the molding chamber of the molding machine, extruded onto the top surface of the table, and arranged in a continuous joint, it is necessary to The operator inserts and holds the end of the core into the core socket of the core holder at the end position of the core holder, then moves the core holder mounting plate together with the moving cart to the top surface of the table, and The core holder attachment plate is advanced to the sand mold at the end of the vertically split sand mold aligned on the top surface, and the core holder is brought into close contact with the core holder, and the core is held in the core socket of the same core holder. By inserting the core into the mold hole of the vertically split sand mold, and at the same time turning off the suction negative pressure that was acting on the core socket, or switching it to positive pressure, the core will move away from the core socket and into the mold hole. It is locked.

After that, the core holder mounting plate is moved backwards from the vertically divided column mold together with the core holder, and then moved to the side end of the frame frame using a moving trolley, and the worker is placed in the core socket of the core holder again. The core is inserted and held, and the core holder is a core holder that holds the core in synchronization with the operation in which the vertically split sand mold molded by the molding machine joins the vertically split sand mold row on the top surface of the table. The cores are repeatedly moved to the top of the table together with the mounting plate to sequentially set the cores into the holes of the sand mold.

Next, another vertically split sand mold with a different shape and position of the mold cavity is molded, and when the core holder is replaced to set a core that fits in the mold cavity, the core is placed at the end position of the pedestal frame. The worker releases the clamp of the core holder from the holder mounting board, removes the core holder from the core holder mounting board while grasping it, replaces it with a new core holder, and then installs the core holder again. The cores are clamped to the clamp rods of the mounting board, held in the core sockets of the new core holder, and moved one by one to the vertically split sand mold, setting the cores in the mold holes.

(3) Problems to be Solved by the Invention However, in replacing the core holder, the operator manually replaces the core holder while holding the core holder, so the replacement work is troublesome and time-consuming.

In addition, in recent years, the shape of sand molds has become larger, and the core holders have also become larger, which has caused problems such as the risk of falling during manual replacement.

The present invention was developed in view of the above conventional problems, and its purpose is to hold the core at a position near the end of the pedestal frame without having to manually replace the core holder of the core insertion device. The suspension frame of the body can be raised and lowered to automatically attach the core holder to the core holder mounting board, or the core holder attached to the core holder mounting board can be attached to the suspension frame. By automatically transferring the core to the molding machine, there is no need for labor to replace the core holder, and there is no danger of the core holder falling during replacement, improving safety. The goal is to provide equipment.

Structure of the invention (1) Means for solving the problems In order to achieve the above object, the present invention includes a molding machine 1 that molds a vertically split sand mold, and a vertical sand mold that is molded by this molding machine 1 and extruded to the outside. A table 2 connected to the molding machine 1 to sequentially receive split sand molds, and a mount frame 32 installed from above the table 2 to the side.
A movable trolley 6 is mounted on the upper part of the gantry frame 32 so as to be movable laterally from above the table 2, and a movable trolley 6 is mounted on the lower surface of the movable trolley 6 in a direction intersecting the moving direction of the movable trolley 6. A freely mounted underframe 10, a core holder mounting board 13 pivotally suspended from the underside of this underframe 10, and this core holder mounting board 1.
In the core insertion device, the core insertion device is provided with a core holder 29 that is detachably attached to the board surface of No. A core holder exchange mechanism 28 for exchanging the core holder 29 mounted on the mounting board 13 is provided, and the core holder exchange mechanism 2
Reference numeral 8 denotes left and right columns 20, 20 which are erected to face the core holder mounting board 13 on the lower surface of the movable cart 6 at a position near the end of the mount frame 32, and inner surfaces of the left and right columns 20, 20. A suspension frame 24 of the core holder that moves up and down along the suspension frame 24 of the core holder;
an elevating cylinder 27 installed on a pedestal frame 32 for elevating the core holder 29;
The suspension frame 32 of the core holder 29 has a receiving pin 30 protruding from both sides thereof, and the suspension frame 32 of the core holder 29 has a suspension frame 32 on both inner surfaces thereof for attaching and detaching the receiving pin 30 of the core holder 29. It is composed of a core mounting device 19 for a molding machine having a support 26 for use in the molding machine.

(2) Effect In the core insertion device of the present invention, when replacing the core holder attached to the core holder mounting board, the suspension frame of the core holder exchange mechanism must be empty and the lifting cylinder Raise and stop it until it reaches a height facing the core holder mounting board, and then move the underframe on the bottom of the moving trolley forward while raising the receiving pins on both sides of the core holder mounted on the core holder mounting board. The core holder is stopped at a position facing the upper part of the suspension holder in the suspension frame, and the core holder is released from the core holder mounting board and attached to the suspension holder on both inner sides of the suspension frame. The core holder is supported by the receiving pins on both sides, and then the hanging frame is lowered to the ground and the core holder is removed. Next, insert a new core holder into the lowered suspension frame, support the receiving pins of the core holder on the suspension holder of the suspension frame, and then raise the suspension frame again and insert it into the suspension frame. The core holder is stopped at a position facing the core holder mounting board, and the core holder in the hanging frame is mounted and transferred to the core holder mounting board at this position.Then, the hanging frame is lowered and a new core holder is installed. The core holder mounting board with the body mounted thereon is moved slightly backwards to complete the replacement work of the core holder, and waits to insert the core into the next vertically split sand mold. Therefore, there is no need for the worker to replace the core holder while holding it while lifting it up to the height of the core holder mounting board, which saves the worker's time and effort in replacing the core holder. In addition, it is possible to prevent danger and damage caused by the core holder falling during replacement.

(3) Embodiments Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

3 to 6 show a core insertion device 19 of a molding machine according to an embodiment of the present invention.

In the figure, the core insertion device 19 is connected to a molding machine 1 for molding a vertically split sand mold and to the molding machine 1 for sequentially receiving the vertically split sand mold molded by this molding machine 1 and extruded to the outside. The table 2 is provided with a table 2, and a frame frame 32 is installed from above the table 2 to the side.

A movable trolley 6 is mounted on the upper part of the mount frame 32 so as to be movable from above to the side of the table 2, and on the lower surface of the movable trolley 6 in a direction intersecting the moving direction of the movable trolley 6. An underframe 10 is movably mounted.

As shown in FIGS. 3 and 4, a core holder mounting board 13 is pivotally suspended from the underside of the underframe 10, and the board surface of the core holder mounting board 13 is A core holder 29 indicated by a line is attached.

Furthermore, a core holder exchange mechanism 28 for exchanging the core holder 29 attached to the core holder mounting board 13 is provided at a position near the end of the mount frame 32 as shown in FIGS. It is set up as follows.

The table 2 has the same height as the bottom surface of the molding chamber of the molding machine 1, and another table (not shown) is connected to the extended end of the table 2. The vertically split sand molds molded in the molding chamber are successively extruded to intermediate positions on the table 2 and arranged in a continuous joint.

As shown in FIGS. 3 and 5, the pedestal frame 32 includes pedestals 3, 3 erected at positions near both sides of the upper end of the table 2, the upper ends of the pedestals 3, 3, and a molding machine. horizontal frames 4, 4 which are respectively suspended horizontally on the upper end surface of molding chamber 1 and protrude laterally, and these horizontal frames 4, 4.
It is formed by left and right side frames 5, 5 connected to both ends of the frame.

A movable cart 6 is mounted on guide rails attached to the inner surfaces of the horizontal frames 4, 4 of the mount frame 32.
In order to move the movable cart 6 in the left-right direction, one end of a cross-travel link 7 is pivotally attached to approximately the center of the upper surface of one of the horizontal frames 4, and a cam is pivotally supported on the lower surface of the other end of the cross-transfer link 7. is fitted into a guide groove 8 provided on the upper surface of the movable cart 6 in parallel with the side surface of the cart.
Further, the tip of a plunger of a transverse cylinder 9 whose one end is pivotally attached to the upper surface of the left side frame 5 of the gantry frame 32 is connected to the transverse link 7. The transverse link 7 is reciprocated by the expansion and contraction of the plunger of the transverse cylinder 9, and the movable cart 6 linked to the transverse link 7 is moved from one end of the horizontal frames 4, 4 on the ceiling of the mount frame 32. It will be reciprocated to the other end above the table 2.

As shown in FIGS. 3 and 4, guide rails are provided on the lower surface of the movable cart 6 in parallel with both sides of the cart, and an underframe 10 is mounted on the guide rails. The plunger of the extrusion cylinder 11 installed on the lower surface near one end of the moving truck 6 is connected to the underframe 1.
0, and by the expansion and contraction of the plunger of this extrusion cylinder 11, the underframe 10 is connected to the movable carriage 6.
is moved in a direction that intersects with the direction of movement.

Further, left and right arm rods 12, 12 are suspended from both sides of the lower surface of the underframe 10, and the core holder mounting plate 1
Shaft pieces 15, 15 on both sides of the upper end of the plate 14, which protrude from the upper surface of the plate 3, are pivotally connected to the left and right arm rods 12, 12.

A plate holding cylinder 16 is pivotally attached to an upper position on one side of the plate 14, and the upper end of a plunger of the plate holding cylinder 16 is connected to the underframe 10. By the expansion and contraction of the plunger of the plate holding cylinder 16, the core holder mounting board 13 is tilted toward the board surface on which the core holder 29 is mounted, and the core holder mounting board 13 is tilted toward the board surface on which the core holder 29 is mounted, and the core holder mounting board 13 is tilted toward the board surface on which the core holder 29 is mounted. The core that is installed and held is prevented from falling.

In FIGS. 3 and 4, the core holder mounting plate 1
3 is formed in the shape of a rectangular board with a decompression chamber on the board surface, and clamp cylinders 17 are installed at the four corners of the board surface opposite to the board surface on which the core holder 29 is mounted. Seventeen clamp rods 18 penetrate through the disk body and protrude from the disk surface.

The core holder 29 is formed in the shape of a rectangular disc that can be closely attached to the core holder mounting board 13, as shown by the imaginary lines in FIGS. A clamp hole into which the clamp rod 18 of the core holder mounting board 13 is fitted is provided, and a central socket (not shown) communicating with the decompression chamber of the core holder mounting board 13 is provided on the other board surface. It is being A core holder mounting board 13 is installed in the clamp hole.
The clamp rods 18 are fitted together, and the core holder 29 is tightly clamped to the core holder mounting plate 13 by the operation of the clamp cylinder 17. In this state, suction negative pressure acts on the core socket of the core holder 29 from the decompression chamber of the core holder mounting board 13 to hold the core whose end is inserted into the core socket, and 2. By joining the core holder 29 to the vertically split sand mold on the upper surface and inserting the core into the mold cavity, at the same time, the suction negative pressure that was acting on the core socket is stopped or switched to positive pressure. , the core is locked in the mold cavity at a distance from the core socket.

Furthermore, upper and lower receiving pins 30, 30 for hanging are protrudingly provided on both sides of the core holder 29.

The characteristic feature of the present invention is that the core insertion device 1
9, a core holder exchange mechanism 2 as shown in Figs.
The reason is that 8 was established.

The core holder exchange mechanism 28 is mounted on the horizontal frame 4 on one upper side of the mount frame 32 so as to face the core holder mounting plate 13 suspended from the underframe 10 on the lower surface of the movable cart 6. Left and right columns 20, 20 connected to
and a suspension frame 24 of the core holder that moves up and down along the inner surfaces of the left and right columns 20, 20, and this suspension frame 24.
It is equipped with an elevating cylinder 27 for elevating and lowering the.

The left and right pillars 20, 20 are provided with a cylinder mounting frame 21 connected to the upper part of the inner surface, and a base frame 22 connected to the lower part thereof. Below the cylinder mounting frame 21, the left and right columns 20, 20
Guide rails 23, 23 for guiding the hanging frame 24 are attached to the inner surface of the frame.

The hanging frame 24 is formed of an inverted U-shaped frame body, and guide rollers 25, 25, which are pivotally supported at upper and lower positions on both outer surfaces thereof, are connected to the guide rails 23, 23.
is engaged with. Furthermore, chuck-like hanging receivers 26 are attached to the center position near the front end and the bottom end position of both inner surfaces of the hanging frame 24, and project from both sides of the core holder 29. The core holder 29 is supported within the hanging frame 24 while the provided upper and lower receiving pins 30, 30 are removably engaged with the hanging holders 26, 26.

Note that the suspension holders 26, 26 are not limited to chucks, but include all other fastening mechanisms.

The lifting cylinder 27 is installed facing downward on the cylinder mounting frame 21 and the horizontal frame 4, and the end of the plunger of the lifting cylinder 27 is connected to the upper surface of the hanging frame 24 to raise and lower the hanging frame 24. .

In the core insertion device 19 of the present invention, at the side end of the mount frame 32, the core holder mounting plate 1
The operator inserts and holds the core into the core socket of the core holder 29 clamped to the core holder 3, and in this state extends the plunger of the traverse cylinder 9 to move the movable cart 6 to the table 2 of the molding machine 1. While moving the underframe 10 upward and further advancing the underframe 10 with the extrusion cylinder 11, the core holder 29 clamped to the core holder mounting plate 13 is molded and sequentially extruded onto the upper surface of the table 2 and aligned for bonding. The core held by the core holder 29 is inserted and locked into the hole of the sand mold. Thereafter, the underframe 10 is moved backward to move the core holder mounting plate 13 backward from the sand mold, and the movable cart 6 is moved to the side of the mount frame 32 by the contraction of the plunger of the traverse cylinder 9, and the core is held again. The core is inserted and held in the core socket of the body 29, and the core holder mounting plate 13 is moved in synchronization with the operation in which the vertically divided sand mold molded by the molding machine 1 is joined to the vertically divided sand mold row on the upper surface of the table 2. The cores are repeatedly moved to the upper surface of the table 2 to sequentially set the cores in the holes of the sand mold.

Therefore, when replacing the core holder 29 clamped to the core holder mounting board 13, it is necessary to
At the side end of 2, the core holder mounting board 1 is moved while retracting the plunger of the lifting cylinder 27 with the suspension frame 24 of the core holder exchange mechanism 28 in an empty state.
Raise and stop at the height opposite to 3.

Next, while moving the underframe 10 on the lower surface of the movable cart 6 forward with the extrusion cylinder 11, the core holder 29, which is clamped to the core holder mounting board 13, is moved by the upper and lower receiving pins 30, 30 on both sides thereof. The suspension frame 24 is stopped at a position facing the upper parts of the suspension holders 26, 26 on both inner surfaces, and the core holder 29 is clamped by the clamp rod 18 of the clamp cylinder 17 of the core holder mounting board 13. After opening, the suspension frame 24 is slightly raised to receive the upper and lower support pins 30, 30 on the suspension holders 26, 26, and the clamp rod 18 is retracted into the core holder mounting board 13. The hanging frame 24 supporting the core holder 29 is lowered, and the core holder 29 is transferred to the trolley 31 waiting below and removed.

Next, a new core holder 29 is carried into the hanging frame 24 that is being lowered by the trolley 31, and while the hanging frame 24 is raised, the hanging receivers 26 on both inner surfaces of the hanging frame 24, 26 to receive the upper and lower receiving pins 30, 30 on both sides of the core holder 29, and while further raising the hanging frame 24, raise the core holder 29 to a position facing the core holder mounting plate 13. At this position, the clamp rod 18 of the core holder mounting board 13 is projected and fitted into the clamp hole of the core holder 29, and after lowering the hanging frame 24 a little, the core holder mounting board 13 is fitted. The core holder 29 is clamped by the clamp rod 18 of the 13 clamp cylinder 17.
After that, the suspension frame 24 is lowered, and the core holder mounting board 13 with the new core holder 29 attached is attached to the underframe 10.
At the same time, the core holder 29 is moved backward a little to complete the replacement work of the core holder 29.

Therefore, the core holder 29 clamped to the board surface of the core holder mounting board 13 can be replaced automatically without the need for the operator to hold it, thereby reducing the worker's effort in the replacement work. This saves money and prevents danger and damage caused by the core holder 29 falling.

Effects of the Invention As explained above, according to the present invention, the suspension frame of the core holder is provided near the end of the pedestal frame of the core insertion device of the molding machine so as to be able to move up and down. Replacing the core holder attached to the core holder mounting board of the core insertion device is automated by equipping the side with a hanging holder and lifting and lowering the core holder while removably hanging it. This eliminates the need for labor on the part of the operator.

Furthermore, since the operator does not directly handle the core holder, the core holder is prevented from falling, damaged, etc., and safety when replacing the core holder is improved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a core holder exchange mechanism of a core insertion device of a molding machine according to an embodiment of the present invention;
Fig. 2 is a view taken along the line A-A in Fig. 1, Fig. 3 is a front view of the core holder mounting board with a portion of the core insertion device cut away, and Fig. 4 is a view thereof. Left side view, 5th
The figure is a plan view of the core insertion device, and FIG. 6 is a perspective view of the core insertion device. 1... Molding machine, 2... Table, 6... Moving trolley, 10... Underframe, 13... Core holder mounting board,
19... Core insertion device, 20, 20... Left and right columns, 24... Hanging frame, 26, 26... Hanging receiver, 27... Lifting cylinder, 28... Core holder exchange mechanism, 29...core holder, 32... mount frame.

Claims (1)

[Claims for Utility Model Registration] A molding machine for molding a vertically split sand mold, a table connected to the molding machine to sequentially receive the vertically split sand molds molded by this molding machine and extruded to the outside, and A pedestal frame is installed from the top of the table to the sides, a movable dolly is mounted on the top of the frame so as to be movable from the top of the table to the sides, and a movable dolly is mounted on the underside of the movable dolly. An underframe is mounted so as to be movable in a direction intersecting the direction of movement, a core holder mounting board is pivoted and suspended from the underside of this underframe, and the core holder is detachably attached to the board surface of the core holder mounting board. In the core insertion device, the core insertion device includes a core holder attached to a core holder mounting plate on the lower surface of the movable cart at a position near an end of the pedestal frame. A core holder exchange mechanism is provided for exchanging the holder, and the core holder exchange mechanism is arranged vertically at a position near an end of the mount frame so as to face a core holder mounting plate on the lower surface of the movable trolley. A suspension frame for a core holder that rises and lowers along the inner surface of the left and right pillars, and an elevator cylinder installed in a frame frame for raising and lowering the suspension frame for the core holder; The core holder has a receiving pin protruding from both sides thereof, and the hanging frame of the core holder detachably supports the receiving pin of the core holder on both inner surfaces thereof. A core insertion device for a molding machine, comprising a hanging holder for use in the molding machine.