JPS6049070B2 - Demolding device after casting - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement in a mold breaking device after casting.

This invention relates to a device for breaking out the molds of multiple sets of so-called interlocking mold flasks after working with raw hot water.
It is common to combine an upper mold and a lower mold and pour hot water through a raw sprue formed at the boundary between the sides of the mold.

Normally, in order to improve productivity and efficiency, a large number of sets of upper and lower molds are loaded vertically prior to raw hot water work, and these multiple sets of molds are simply installed in a pair of upper and lower molds. Since the raw water spout is configured on the side, raw water work cannot be carried out as it is. For this purpose, a large number of sets of molds are mounted on a trolley, and the upper molds are clamped, and while the molds remain fixed, the multiple sets of molds are rolled over together with the trolley, and the green sprue is displaced from a position on the side to a position on the upper plane. Therefore, the raw hot water operation is sequentially applied to many sets of flasks through the flat raw sprue, and after the raw hot water operation, the multiple sets of flasks are pulled up together with the trolley to return the molds in the vertical direction, and the molds are unclamped. By the manual labor of each group,
Although demolding is commonly practiced in this industry, in this invention, prior to the demolding operation, multiple sets of casting flasks that have undergone a raw hot water process are directly loaded into a demolding device.
When the mold is unclamped, the cart is removed, and only a large number of sets of flasks are successively demolded using a demolding device. A device of this type is known as described in Japanese Patent Application Laid-open No. 11224/1983.

In this example, in order to separate the product in the flask from the sand mold, the flask is transferred to a separating device using a support member vertically disposed from a movable cart. Therefore, when the pair of flasks are transported, the bottom surfaces of the flasks are constantly rubbed violently against the surface of the surface plate.

For this reason, the bottom of the flask not only has the drawback of being damaged by repeated use, but also wears and distorts the bottom of the flask, which may make it impossible to transport the flask stably and reliably, and the product may separate from the sand mold. There was a risk that the work could not be carried out reliably. This invention attempts to eliminate these disadvantages, and the purpose of this invention is to remove the bottom surface of the pouring form from the next place when the mold is fed to a vibrating box for separating the product and the sand mold. The objective is to supply the molten metal in a free state without contacting the surface of the waiting mold.

Another object of the invention is to reduce damage to the pouring form due to repeated use. The basic structure of the present invention is a RIPTA device that is equipped with a roller conveyor that holds a stack of pouring molds on the upper surface of a movable member that can be raised and lowered in conjunction with a reversing motor, and a RIPTA device that holds a stack of pouring molds. a pusher device that has a sliding member equipped with a pair of clamping arms that clamps the uppermost formwork of a stack of pouring formworks, and the sliding member moves forward to push out the formwork; In the mold breaking device, the pusher device has a hollow roller conveyor for holding a pouring mold sent from a mold, and a vibration box having a built-in impact vibrator is provided above the roller conveyor so as to be movable up and down. A pair of sliding rods are attached to the frame horizontally and in parallel, and a sliding member is slidably fitted to the sliding rods,
A pouring form in which a sliding member is connected to a rod of a cylinder attached to a frame, and a pair of clamping arms are rotatably pivoted to the sliding member, and the clamping arms are stacked one on top of the other. After holding the uppermost pouring mold frame, the molds except the uppermost one are lowered slightly through the Lipta device, during which time the rod of the cylinder is pushed out and the uppermost pouring mold is lowered. It is provided so as to be conveyed to the vibration impact device side.

The embodiment will be explained with reference to the drawings. In FIG. 4, the delivery device A has a drive motor M1 mounted on crossbeams 2, 2 horizontally suspended in the center of one end of the machine base 1 so as to be able to move vertically slightly.
A first roller conveyor 5 consisting of rollers 4, 4, . . . with a sprocket 3 attached to one end is attached to the top of one end of the machine base 1, and a sprocket 3 of each roller 4, 4, . , 3, . . . and the drive shaft 6 of the motor M1, an endless chain 7 is hung thereon, and a second roller conveyor 8 is attached so as to be continuous with the first roller conveyor 5.
At the tip of the second roller conveyor 8, there is provided a stopper means B for stopping at a predetermined position a mounting plate 9 on which a stack of pouring molds U, which is a stack of pouring molds stacked vertically, is placed. Installing. Note that 10 is a safety wall.

In FIGS. 1 and 4, the stopper means B is located at the second
Two rollers at the front end of the roller conveyor 8 are removed, and a pair of stacking girders 11 are installed horizontally in the conveying direction of the pouring mold stack U.
11, a crossbeam 12'' with a flange 12a hanging thereon is installed, one end of the cylinder 13 is rotatably supported in the center of the crossbeam 12, and front and rear claws 14a, 14b and a connecting portion 14c are separately installed. A pair of stopper arms 14, 14 are rotatably pivoted to a shaft 15 installed on the cross beams 11, 11 at a required interval, and the two stopper arms 14 are integrally formed. Insert the claw parts 14a and 14b into the cutout part of the roller, and connect the connecting part 14c of the stopper arm 14.
One end of the cylinder 13 is connected to the rod 16 of the cylinder 13. In FIGS. 1 to 4, the Lipta device C includes a movable member 1
A third roller conveyor 7 continuous with the second roller conveyor 8
A roller conveyor 18 is installed, and cam followers 19, 19, .
The chain mounting members 20, 20 bent at right angles (the state is shown in FIG. 4) are fixed near the fixing positions of the cam followers 19, 19 on the upper surface. As shown, cross beams 22, 22 forming a gate-shaped frame 21
A pillar 23 having a square cross section is fixed vertically to the pillar 2.
Cam follower 19 attached to movable member 17 at 3, 23
, 19, . 25, and sprockets 26, 26, 26 are attached to both ends and the center of the shaft 24, and sprockets 27, 26, 26 are attached to both ends of the shaft 25, corresponding to the sprockets 26, 26 attached to both ends of the shaft 24.
27 is attached, a sprocket 26 is attached to the center of the shaft 24, and a drive motor M2 that can freely rotate in forward and reverse directions is attached to the upper part of the frame 21.
A chain 29 is hung between the drive shaft 28 of the movable member 17, one end of the chain 30 is tied to the wire attachment member 20 attached to both ends of the upper part of the movable member 17, and the sprockets 26, 27 are attached to both ends of the shafts 24, 25. Then, a balance weight 31 is attached to the other end.

Now, when the drive motor M2 is rotated in the forward and reverse directions, the movable member 1
7 can be raised and lowered together with the third roller conveyor 18.
In FIG. 1, reference numeral 32 denotes a contact plate against which the stack of pouring molds U delivered from the second roller conveyor 8 comes into contact.

In FIGS. 1 and 2, the pusher device D includes a frame 2
A pair of sliding rods 33, 33 are attached horizontally and in parallel to the central part of the sliding member 1 in the height direction, and both ends of a sliding member 34 are slidably fitted into the sliding rods 33, 33, The central part of 34 is connected to the rod 36 of a cylinder 35 attached to the frame 21, and the sliding member 34 is pivoted with holding arms 39 and 40 that rotate about shafts 37 and 38, respectively, and the sliding member 34 A bell crank 43 is pivotally connected to the rod 42 of a cylinder 41 attached to the member 34, one end of the link 44 is pivotally connected to the base end of the clamping arm 39, and the other end is connected to the bell crank 4.
The other lever 43b is pivotally connected to one lever 43a of 3.
and the proximal end of the clamping arm 40 are fixed unrotatably.

As shown in FIG. 1, the clamping arm 40 is cut out from the center toward the tip, and the clamping arm 40 rotates in a horizontal plane. The clamping arm 39 also has a notch similar to the clamping arm 40, and the notches of the arms 39 and 40 engage with protrusions W protruding from both sides of the mold (2).

In FIGS. 1, 2, and 3, the vibration impact device E for demolding is equipped with an eccentric impact vibrator M3 that generates vibration inside the vibration box 45. At the bottom,
Collision plates 46, 46, etc. made of elastic material that collide with each other are attached to the upper part of the pouring form (■) after casting, and the two guide rods 47, 47 and the front of the frame 21 are fixed to the upper part of the vibration box 45. Fix the rod 50 of the cylinder 49 attached to the plate 48,
Guide tubes 51, 51 are attached to the upper surface of the fixed plate 48 in correspondence with the guide rods 47, 47, the guide rods 47 are slidably fitted into the guide tubes 51, and a mold V is placed below the vibration box 45.
A hollow roller conveyor 52 on which the objects are placed is installed horizontally.

Continuing with the hollow roller conveyor 52, a roller conveyor 54 for empty frames having a stopper plate 53 at the tip is mounted slightly tilted forward, and a pouring mold is placed below the hollow roller conveyor 52 after the mold is disassembled. A chute 55 is provided to guide the falling of the cast product and molding sand separated from the frame V. In addition, in FIGS. 1 and 3, 56 is the chute 55.
This is a belt conveyor that transports the castings that have been guided and fallen from the mold to the subsequent process.

In FIGS. 1 and 4, a fourth roller conveyor 57 for conveying the mounting plate 9 and a fourth roller conveyor 57 with a stopper plate 58 attached to the front end are connected to the third roller conveyor 18 of the Lipta device D. The fifth roller conveyor 59 is installed slightly tilted forward, and a rod 61 of a cylinder 60 is fixed to the lower part of the fifth roller conveyor 59 so that it can be moved up and down.

(Function of the Invention) Next, to explain the function of the present invention, in FIG.
When placed on the second roller conveyor 5, each of the rollers 4, 4, . When the top stack of pouring molds U comes into contact with the contact plate 32, the rod 16 of the cylinder 13 of the stopper device B
is pushed out, and the front claw portion 14a of the stopper arm 14 protrudes onto the second roller conveyor 8 to prevent the subsequent stacked pouring molds U2, U3, . . .

Next, in FIGS. 1 and 2, the movable member 17 of the Lipta device C is raised by the cooperation of the drive motor M2, which can be rotated in forward and backward directions, and the balance weight 31, and the pouring mold stack stack U1
When the topmost pouring form V1 reaches a predetermined height, the drive motor M2 stops, and the rod 42 of the cylinder 41 attached to the sliding member 34, which is waiting at a predetermined position, retracts, and the clamping arms 39, 40 The arms 39 and 40 are rotated in directions approaching each other about shafts 37 and 38, respectively, and have notches cut out from the tips of the arms 39 and 40 toward the center and protrusions Wl on both sides of the pouring form ■1. , Wl, the arms 39 and 40 clamp the formwork ■1.

When both arms 39, 40 clamp the pouring form V1, the drive motor M2 reverses in the direction shown in FIG. A gap is formed between the uppermost pouring form V1 and the second pouring form V2,
In this state, the rod 36 of the cylinder 35 is pushed out, pushing out the sliding member 34 shown in FIG.
, 40 is conveyed onto the hollow roller conveyor 52, while the rod 4 of the cylinder 41
2 is pushed out and the ends of both arms 39, 40 rotate outward relative to each other around shafts 37, 38, whereby both arms 39, 40 and protrusions Wl, Wl of pouring form V1 are separated, Next, the rod 36 of the cylinder 35 is retracted to its original position and stands by so as to sandwich the next pouring form V2. To explain the demolding process with reference to FIG. 1, when the rod 36 of the cylinder 35 is retracted to its original position, the vibration box 45 of the vibration impact device E, which has been stopped from descending by the hydraulic cylinder 49, is lowered and the lower part of the vibration box 45 is moved. Attached collision plate 46, 46,・
... collides with the upper part of the pouring form ■, and at the same time, the impact vibration of the eccentric impact vibrator M3 hits the impact plates 46, 46, .
The impact vibration is continuously transmitted to the pouring form V through the impact vibration, and the cast product and foundry sand in the pouring form V are separated from the formwork, and the hollow roller conveyor 52 is hollowed out. The material passes through the section, falls, is guided by a chute 55, and is conveyed to a subsequent process by a belt conveyor 56.

This completes the mold release, the rod 50 of the cylinder 49 is retracted, the vibration box 45 is raised, and the empty mold left on the hollow roller conveyor 52 is moved forward by the next pouring mold ■2. It is pushed out, runs on the roller conveyor 54 for empty forms, and comes into contact with the stopper plate 53. This mold is taken out from the empty mold roller conveyor 54 by an appropriate means.
Similarly, the second . The cast products and molding sand of the pouring mold V2, the third pouring mold V3, etc. are separated from the molds, and the lowest mold is clamped by the clamping arms 39, 40. , the drive motor M2 reverses and the movable member 17 of the Liptor device C returns to its original position (the position shown in FIG. 1), and when this is confirmed, the cylinder 13 of the stopper device B operates and the rod 16 retracts. At the same time as the front claw part 14a of the stopper arm 14 is retracted, the horizontal component of the protruding force of the rear claw part 14b sends the second pouring form stack U2 forward.

When the stack of pouring molds U2 is sent out, the mounting plate 9 on which the stack of pouring molds U1 was placed is transferred to the fourth roller conveyor 5.
7 and comes into contact with the stopper plate 58 of the fifth roller conveyor 59. At this time, the rod 61 of the cylinder 60 is pushed out, and the mounting plate 9 is raised together with the fifth roller conveyor 59 to a predetermined position. When the placing plate 9 is taken out, the cylinder 60 is activated and the fifth roller conveyor 59
returns to its original position.

By continuously repeating the above operations, a large number of pouring molds are successively taken apart, and the empty molds and mounting plates are also successively taken out.

In the above-mentioned operation, each cylinder is operated in conjunction with a limit switch etc. installed at an appropriate location.

Although this embodiment has been described with respect to a mold using a mold, it is of course applicable to a mold solidified with synthetic resin or the like, a frozen mold, etc.

(Effects of the Invention) According to the present invention, it is possible to automatically and continuously disassemble a large number of pouring molds without any human intervention.
It has the excellent effect of eliminating the manual mold disassembly work that was previously considered troublesome.

Furthermore, according to the present invention, it is possible to disassemble the upper and lower formwork without disassembling it, making it convenient to transport the empty formwork after disassembling the formwork, and it is also possible to connect several formworks together. In the case of casting, several stacked molds can be placed as they are on the conveyor of the delivery device and the molds can be separated, and the efficiency of mold separation is extremely high. The stacked pouring molds are supported by the clamping arms and are always supplied in a free state to the next waiting pouring mold, so that the bottom of the pouring mold is not in contact with the waiting pouring mold. There is no contact with the surface of the hot water form.

Therefore, the formwork is less likely to be damaged and can be used repeatedly. Since no distortion occurs due to damage, the formwork can be lifted stably and reliably by having the formwork supported by the Lipta device. In addition, since the sand molds in the formwork are joined at the top and bottom, if the formwork is transferred by push operation as in the conventional mechanism, there is a risk that it will not be able to move smoothly due to the resistance caused by the joining of the upper and lower sand molds. Since the frame is transferred in a free state from the lower mold, the transfer is much smoother than in the past.

Furthermore, during the pouring process, the moisture in the sand in the center of the sand mold inside the formwork evaporates and a large amount of this moisture remains near the boundary of the stacked formwork or, conventionally, at the boundary with the surface plate. This creates an environment in which it is easy for the formwork to bond between the formwork and the bottom surface of the formwork and the surface of the surface plate.However, as described above, in this invention, when the formwork is transferred, the formwork is separated from the formwork located below. Since the process is carried out in the process, there is no problem with any disadvantages caused by the pouring process.

[Brief explanation of the drawing]

1 is a front view of the present device, FIG. 2 is a plan view thereof, FIG. 3 is a right side view thereof, and FIG. 4 is a view taken along the line X-ray in FIG. 1. (Explanation of symbols of main parts), 5...First roller conveyor, 14...Stopper arm, 17...Movable member, 18...Third roller conveyor, 34...
...Sliding member, 39, 40...Pinching arm, 4
5... Vibration box, 52... Hollow roller conveyor, U... Pouring form stack, ■... Formwork, M
2... Drive motor, M3... Impact vibrator, A... Delivery device, B... Stopper means, C... Ripter device, D...Pusher device, E...Vibration impact device.

Claims (1)

[Claims] 1. A lifter device equipped with a roller conveyor for holding a pile of pouring molds on the upper surface of a movable member that can be raised and lowered in conjunction with a reversing motor, and a pile of pouring molds lifted by this lifter device. A pusher device that has a sliding member equipped with a pair of clamping arms that grips the uppermost formwork, and this sliding member advances to push out the formwork, and a pusher device that pours molten metal from the pusher device. In the mold breaking device, which has a hollow roller conveyor that holds the formwork, and a vibration box containing a built-in impact vibrator is provided above the roller conveyor so as to be able to move up and down, the pusher device has a pair of sliders on the frame. A moving rod is installed horizontally and in parallel, a sliding member is slidably fitted into the sliding rod, the sliding member is connected to a rod of a cylinder attached to the frame, and a pair of clamps are attached to the sliding member. The arm is rotatably attached, and after the clamping arm clamps the uppermost pouring mold among stacked pouring molds, the uppermost pouring mold is removed via a lifter device. This mold breaking device after casting is provided in such a way that the mold is slightly lowered, during which time the rod of the cylinder is pushed out, and the uppermost pouring mold is conveyed to the vibration striking device.