JPS649900B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for conveying a mold cut out in a frameless mold making process to the next process, such as a pouring process, in a frameless mold making machine.

When extruding framed molds one after another and transporting them to the next process, if the end surfaces of multiple molds are brought into contact with each other and extruded, the surface pressure generated between these molds may cause the molds to lose their shape or deform. There was a problem that occurred.

In view of the above reasons, an object of the present invention is to provide an apparatus that can individually extrude a plurality of molds and transport them to the next step in a good manner without bringing them into contact with each other.

An embodiment of the present invention will be described below with reference to the drawings. A base 2 is fixed on a floor surface 1, and a frame 3 is erected on the base 2. A fixed base 5 having an upper surface 4 inclined at an angle of 45 degrees with respect to the floor 1 is attached to the base 2 and the frame 3. A rotary table 6 is attached to the fixed base 5 and is rotatable about an axis perpendicular to the upper surface 4 (inclined at 45 degrees with respect to the floor surface 1). A pair of guide rods 8 (only the front one is shown in the figure) are attached to the rotary table 6 and are inclined at an angle of 45 degrees with respect to the axis of rotation of the rotary table 6. An upper formwork 9 and a lower formwork 10 are each slidably held in such a manner that they can approach and separate from each other. The movement of these upper and lower formworks 9, 10 is performed by a fluid pressure cylinder (not shown). Further, in this embodiment, another set of guide rod 8' and upper and lower formworks 9' and 10' are positioned symmetrically to the guide rod 8 and upper and lower formworks 9 and 10 with respect to the rotational axis of the rotary table 6. It is arranged. Here, the upper and lower formwork 910
The side including the upper and lower formwork devices 9' and 10' will be referred to as the first formwork device 11 and the second formwork device 12, respectively. The first and second formwork devices 1
1 or 12, the guide rod 8 or 8' is parallel to the bottom (horizontal) 1, that is, the upper and lower formwork 9,
When the axes of 10 or 9', 10' become horizontal, the axes of the upper and lower formworks 9', 10' or 9, 10 of the other formwork device become vertical, but the position of the former at this time The latter position will be referred to as the molding station 13, and the latter position will be referred to as the frame punching station 14. Among these working positions, the molding station 13 is equipped with squeeze devices 17 and 18 having squeeze plates 15 and 16 that can be fitted into the upper and lower formworks 9, 9', 10 and 10', respectively, and which are suspended from the frame 3. A matching plate 19 and a molding sand supply device 20 are provided.

A frame punching device 22 is disposed above the frame punching station 14, and has a push plate 21 that pushes out the molds in the upper and lower mold frames 9, 10 or 9', 10' downward, while a mold punching device 22 is disposed above the frame punching station 14. A pedestal 23 for receiving a mold placed on the pedestal 23 and a conveyance device 28 for conveying the mold placed on the pedestal 23 to the next step, a pouring step, are provided. The cradle 23 is moved up and down by an elevating cylinder 24, and the guide sleeve 25 and guide rod 26 guide the pedestal 23 up and down. The guide sleeve 25 is attached to a base 27 fixed on the floor 1, and the guide rod 26, which is fitted into the guide sleeve 25 so as to be movable up and down, is attached to the lower surface of the pedestal 23 in a hanging manner. .

Next, the conveyance device 28 will be explained according to FIGS. 2 to 5. On the floor 1 located in front of the pedestal 23 (on the right side in FIG. 2), front and rear support members 2 are mounted.
9 and 30 are erected at predetermined intervals,
A transport board 31 is fixed horizontally across the upper end surfaces of both the support members 29 and 30. A flat conveying surface 31a formed on the upper surface of the conveying board 31 is continuous with and coplanar with the receiving surface 23a of the pedestal 23 when the pedestal 23 is at the lower moving end position. The receiving surface 23a of the pedestal 23 and the conveying surface 31a of the conveying board 31 constitute a mold conveying path 32.

The reciprocating table 33 that forwards the mold on the conveyance path 32 toward the next process, for example, the pouring process, is connected to the receiving table 23.
and disposed below the transport board 31,
It is formed into a rectangular frame shape that is appropriately wider than these members 23 and 31. Rollers 3 mounted on the floor 1 are installed on both sides of the lower surface of the carriage 33 in the front-rear direction.
Rails 36 and 37 that slide on 4 and 35 are attached, and the carriage 33 is attached to the transfer cylinder 3.
8, the mold is reciprocated with a stroke S that is larger than the length in the longitudinal direction (length in the conveying direction) of the mold. Furthermore, on the upper surface of the reciprocating table 33, there are fixed extrusion plates 39 for pushing out the molds on the pedestals 23 towards the transport board 31, and a plurality of pairs (not shown in the figure) for forwarding the molds on the transport board 31 by extrusion. A pair of front and rear movable extrusion plates (hereinafter referred to as first and second movable extrusion plates) 40 and 41 are arranged at equal intervals larger than the longitudinal length of the mold. The first and second movable extrusion plates 40 and 41 are arranged so as to be movable forward and backward with respect to the conveyance path 31, and in this embodiment, they are rotated by bearings 42 to 42 in the front and rear directions on both sides of the top surface of the carriage 33. They are mounted oppositely to both support shafts 43 and 44 which are movably supported. The first and second movable extrusion plates 40 and 41 are held in positions where they advance toward the conveyance path 32 by support shafts 43 and 44 when the carriage 33 moves forward (advance), and when the carriage 33 moves forward. (When retracting), the support shafts 43 and 44 are rotated to maintain the retracted position with respect to the conveyance path 32. Also,
Both support shafts 43 and 44 are repeatedly rotated in synchronization and in opposite directions by a swing cylinder 45, and one end of both support shafts 43 and 44 (the left end in FIG. 3) 43 has a swing cylinder 4 at one end.
A first arm 46 connected to the tip of the rod 5 is attached. Furthermore, a second arm 48 is attached to the other support shaft 44, and has one end connected to the base of the swing cylinder 45 and the other end connected to the first arm 46 via a connecting rod 47.

In the above configuration, first and second formwork devices 11 and 12 move from the molding station 13 to the frame punching station 14 and from the frame punching station 14 to the molding station 13 by rotating the turntable 6 by 180 degrees. will be relocated to Turntable 6
When the molding station 13 is in the state shown in FIG. 1, the following molding operation is performed at the molding station 13. That is, the upper and lower formworks 9 and 10 approach each other due to the action of a fluid pressure cylinder (not shown), and the match plate 19
At the same time, the squeeze plate 15,1
6 enters the set position in the upper and lower formworks 9 and 10, respectively, and stops to form a molding cavity, and then the molding sand supply device 20 descends and its lower end enters the upper and lower formworks 9 and 10, respectively.
10, molding sand is filled into each mold cavity through the supply holes 9a, 10a by a known blowing method or the like. After this squeeze device 1
The molding sand is compacted by the actions of steps 7 and 18, and then a mold release operation is performed to complete the molding. On the other hand, at the frame cutting station 14, the following die matching and frame cutting operations are performed. That is, after the upper and lower formworks 9' and 10' are brought close to each other by the operation of a hydraulic cylinder (not shown) and the molds are matched, the receiver at the lower moving end position as shown in FIG. The platform 23 rises. After this pedestal 23 is brought into contact with the lower surface of the lower mold in the lower mold frame 10' or stopped with a gap, the push plate 21 is lowered by the action of the frame removing device 22 and the upper mold frame 9' After coming into contact with the upper surface of the inner upper mold, the press plate 21 and the pedestal 23 hold the matched mold between them and perform a frame removal operation downward. However, at this time, the frame removing device 25
The pressing force of the pedestal 23 is set to be greater than that of the pedestal 23.

When the frame removal operation is completed, the push plate 21 rises to its original position, while the pedestal 23 receives the frame-cut mold and descends to its original lower moving end position. Then, the reciprocating table 33 is advanced by the conveying cylinder 38, and the mold on the cradle 23 is pushed out by the fixed extrusion plate 39 toward the conveying plate 31. , the second movable extrusion plates 40, 41 advance the molds already located on the conveyor plate 31 by one pitch, respectively. When the carriage 33 reaches the forward end, the first and second movable extrusion plates 40 and 41 are moved toward the conveyance path 32 via both support shafts 43 and 44, which are rotated in opposite directions by the swing cylinder 45. It swings to the retracted position (the position indicated by the chain line in FIG. 4). In this state, the carriage 33 retreats, and when the carriage 33 reaches its original position, the first and second movable extrusion plates 40, 41 move to the position where they enter the conveyance path 32 (indicated by the solid line in Fig. 4). oscillate to the position shown). Here, the pedestal 23 rises again as described above, receives the mold that has been punched out at the punching station 14, and descends to the original lower moving end position. Then,
Since the reciprocating table 33 moves forward as described above, the mold on the pedestal 23 is pushed out toward the transfer plate 31 by the fixed extrusion plate 39, while the mold on the transfer plate 31 that was previously pushed out is pushed forward by the first movable pushing plate 40.

As described above, in this embodiment, the mold on the pedestal 23 is extruded by the fixed extrusion plate 39, then extruded by the first movable extrusion plate 40, and then extruded by the second movable extrusion plate 41. It is pushed out. Therefore, the plurality of molds on the conveyance path 32 are individually extruded by the fixed extrusion plate 39 and the first and second movable extrusion plates 40, 41, and are intermittently transferred to the next process, the pouring process. transported to.

In the above embodiment, the first and second movable extrusion plates 40 and 41 are attached to the support shafts 43 and 44 so that they can move forward and backward with respect to the conveyance path 32 by rotation. Transport board 3
It may be configured such that it can move forward and backward with respect to the conveyance path 32 by linearly protruding and retracting from the top and bottom or left and right directions with respect to the conveyance surface 31a.

Further, the number of movable extrusion plates 40, 41 may be appropriately determined depending on the conveyance distance of the mold.

As exemplified above, the present invention uses a fixed extrusion plate and a movable extrusion plate provided on a carriage that reciprocates along the mold conveyance path with a stroke larger than the longitudinal length of the mold. A plurality of molds can be extruded individually without contacting each other. Therefore, the mold can be smoothly transported to the next process while minimizing deformation and deformation of the mold during transport.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view showing the entire frameless molding machine, and FIGS.
Fig. 5 shows the conveyance device, Fig. 2 is a side sectional view, Fig. 3 is a plan view, Fig. 4 is a sectional view taken along the line - - of Fig. 3, and Fig. 5 is a view taken along the - line of Fig. 3. It is. 9...Upper formwork, 10...Lower formwork, 14...Frame punching station, 22...Frame punching device, 23...Base, 28...Transportation device, 31...Transportation board, 32...
... Conveyance path, 33 ... Carriage table, 39 ... Fixed extrusion plate, 40, 41 ... Movable extrusion plate.

Claims (1)

[Claims] 1 A conveyance path for the mold is constituted by a pedestal for receiving the blanked mold and a conveyance plate having a continuous conveyance surface in front of the receiving surface of the pedestal, and the mold is transported along the conveyance path. A reciprocating table is installed that reciprocates with a stroke larger than , and this reciprocating table includes a fixed extrusion plate that pushes out the mold on the pedestal toward the conveyance plate, and a suitable number of extrusion plates that extrude the mold on the conveyance plate. movable extrusion plates are arranged at intervals larger than the mold, and the movable extrusion plates are configured to enter into the conveyance path when the carriage moves forward and retreat when it retreats. A mold conveying device in a frameless mold making machine.