JP3034288B2 - Demolding device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a demolding device for removing a formwork device from a molded product such as a lightweight cellular concrete panel.

(Background technology)

For example, a lightweight cellular concrete panel adds foam to a slurry containing cement and silica sand as main raw materials, casts it into a cavity of the formwork device, temporarily cures and hardens, and then removes the formwork device. It is manufactured by molding into a lightweight cellular concrete panel, pressing the panel in an autoclave, and steam curing.

By the way, conventionally, a demolding device used for forming a panel of this type excavates a pit of a predetermined depth in the ground, installs a base frame on the upper part of the pit, and freely raises and lowers the undulating frame on the base frame. And a hydraulic cylinder for raising and lowering the undulating frame is housed in the pit.

Accordingly, when the mold apparatus in which the slurry in the cavity is temporarily cured and hardened is loaded on the up-and-down frame in a horizontal state, the up-down frame is raised from the horizontal state to the upright state by driving the hydraulic cylinder. In this state,
If the peripheral mold member located on the bottom side of the mold apparatus is removed from the mold body, and the molded product is held in an upright state, the hydraulic cylinder is driven to lower the undulating frame to a horizontal state. Since the mold body is also laid down together, the mold body can be removed from the molded product.

[Problems to be solved by the invention]

As described above, in the conventional demolding apparatus, since the undulating frame is raised and lowered using the hydraulic cylinder, a pit for accommodating the hydraulic cylinder must be excavated in the ground.

This is disadvantageous in that the foundation work for excavating the pit is costly and maintenance work must be performed in the pit, which is troublesome. Moreover, there is a disadvantage that the layout change of the panel forming line is restricted.

Further, in the case of a hydraulic cylinder, a preparation operation is required before the work is started, and it is difficult to control the initial speed of the up-and-down frame from the upright state, so that the surface layer of the lightweight cellular concrete panel is separated. .

Here, an object of the present invention is to provide a demolding apparatus which can solve such conventional drawbacks, can easily perform equipment and maintenance work, and can prevent surface layer peeling at the time of demolding.

[Means for solving the problem]

Therefore, the demolding device of the present invention includes a base frame,
An up / down frame that is provided on the base frame so as to be able to move up and down via a rotating shaft to raise and lower the loaded form device, and a motor that moves the up / down frame up and down. A driving device capable of switching the undulating speed of the undulating frame, a detecting means for detecting that the undulating frame is inclined by a predetermined angle from the upright state to the falling direction, and driving the driving device to undulate the undulating frame, A control device for switching the driving device at a very low speed from when the undulating frame is tilted by a predetermined angle in the falling direction to the falling direction by the detection means.

(Operation)

When the motor of the driving device is driven after the form device has been loaded onto the undulating frame, the undulating frame is erected upright.

Here, while separating the mold member located on the bottom side of the mold device from other mold members, and holding the molded product in the mold device in an upright state, driving the motor of the drive device, Since the undulating frame is laid down, the formwork device is removed.

At this time, the speed is switched from the upright state to the slow speed from the upright state until the detection means detects that the frame is inclined by the predetermined angle in the falling direction.

Therefore, surface layer separation at the time of demolding can be prevented. Further, since a motor is used for the drive device, equipment and maintenance work can be easily performed.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of the demolding apparatus of this embodiment, and FIG.
The cross section taken along the line II-II in the figure is shown. In these figures, reference numeral 11 denotes a base frame installed on the floor.
The rotating shaft 12 is horizontally and rotatably supported by the base frame 11 at a substantially intermediate position via bearings 13A and 13B. A driving device that connects the rotating shaft 12 to the rotating shaft 12 at right angles to the rotating shaft 12 via two connecting arms 14A and 14B, and that drives the lifting frame 15 to perform the lifting operation.
16 are linked.

The undulating frame 15 holds the formwork device 21 in a horizontal state.
Is erected to an upright state on condition that it has been carried in, and thereafter, it is laid down to a horizontal state with the molded product W in the formwork device 21 left. Accordingly, although not shown here, the loaded formwork device 21 is
There is provided a clamp mechanism for holding the frame on the undulating frame 15.

The formwork device 21 includes a base 22, and four peripheral formwork members 23A, 23B, 23C, and 23D arranged in a rectangular shape to form a cavity for casting a slurry on the upper surface of the base 22. It is configured. Here, when the form device 21 is erected in an upright state, the peripheral form member 23A located on the bottom side comes off the other peripheral form members 23B, 23C23D and the base 22. ing.

Further, when the form device 21 is erected in the upright state, the receiving members 31A and 31B for receiving the peripheral form member 23A located on the bottom side.
Is provided on the base plate 11, and the molded product W in the formwork device 21 is set upright in the vicinity thereof.
Holding mechanisms 32A and 32B are provided. Each of the holding mechanisms 32A and 32B includes a column 33, a bracket 34 attached to the upper end of the column 33, and a pin which is provided on the bracket 34 so as to be freely inserted and removed and holds the molded product W in the formwork apparatus 21 in an upright state. It consists of 35.

The driving device 16 includes a motor 41, and a first-stage reduction mechanism that changes the rotation speed of the motor 41 into two stages, 1/1 and 1/100.
42, an electromagnetic brake mechanism 43, and a second-stage reduction mechanism 44 for further reducing the rotation speed from the first-stage reduction mechanism 42 to 1/1000.
And a coupling 45 for transmitting the rotation of the second-stage speed reduction mechanism 44 to the rotation shaft 12.

Next, FIG. 3 shows a circuit configuration for controlling the driving device 16. In the figure, reference numeral 51 denotes a control device. The control device 51 is connected with an operation panel 52, a limit switch 53 constituting detection means, a motor 41 of the drive device 16, a first-stage speed reduction mechanism 42, an electromagnetic brake mechanism 43, and the like.

The operation panel 52 includes a rising command switch 52A for commanding a rising operation of the rising frame 15 and a rising frame 1.
A lodging command switch 52B for instructing the falling operation of the fifth operation is arranged. Further, the limit switch 53 is for detecting that the undulating frame 15 is inclined by a predetermined angle, for example, 3 ° from the upright state to the falling direction, and the undulating frame 15 is inclined by 3 ° from the upright state to the falling direction. It is mounted at a position that is sometimes turned on by the undulating frame 15.

When the up / down command switch 52A is pressed on the operation panel 52, the control device 51 drives the motor 41 in a direction in which the up / down frame 15 stands up, and the electromagnetic brake mechanism 43 is moved slightly before the up / down frame 15 is in the upright state. To stop in an upright position. When the fall command switch 52B is pressed, the first-stage speed reduction mechanism 42 is switched to a 1/100 reduction ratio, that is, a very low speed, and the motor 41 is driven in a direction in which the up-and-down frame 15 falls, and thereafter, the limit switch is switched. When 53 is turned on, the first-stage speed reduction mechanism 42 is switched to 1/1. Then, the electromagnetic brake mechanism 43 is actuated slightly before the undulating frame 15 is in the horizontal state and stopped in the horizontal state.

 Next, the operation of the present embodiment will be described.

First, after the formwork device 21 is loaded onto the up-and-down frame 15 in the direction indicated by the arrow in FIG. 1, on the operation panel 52, the upright command switch 52A is pressed. Then, the motor 41 is driven in the direction in which the undulating frame 15 stands. Thus, the undulating frame 15 is gradually erected from the horizontal state. Eventually, when the up-and-down frame 15 reaches slightly before the upright state, the electromagnetic brake mechanism 43 operates and stops when the upright state is reached.

Then, the peripheral form member 23A of the form device 21 is attached to the receiving member 31.
Supported by A, 31B. Here, after removing the peripheral form member 23A of the form device 21 from the other peripheral form members 23B, 23C, 23D and the base 22, the pin 3 is inserted from the upper end of the support 33 of the holding means 32A, 32B.
5 is inserted into the molded product W in the formwork device 21 to maintain the molded product W in an upright state.

After that, on the operation panel 52,
Press B. Then, the first-stage speed reduction mechanism 42 is switched to a speed reduction ratio of 1/100, and the motor 41 is driven in the direction in which the undulating frame 15 falls. This allows the undulating frame
15 gradually falls down from the upright state at a slow speed. Therefore, other mold members and the base except the peripheral mold member 23A gradually fall down at a very low speed together with the undulating frame 15, so that the surface layer separation of the molded product W can be prevented.

Eventually, when the limit switch 53 is turned on, the first-stage speed reduction mechanism 42 is switched to 1/1. Thereafter, when the undulating frame 15 reaches slightly before the horizontal state, the electromagnetic brake mechanism 43 operates and stops in the horizontal state. As a result, the mold apparatus 21 is released from the molded product W.

Therefore, according to the present embodiment, since the motor 41 is used for the driving device 16 for raising and lowering the undulating frame 15, unlike the conventional hydraulic cylinder, a pit for storing the hydraulic cylinder is not excavated on the ground. Is also good. Therefore, since no foundation work for excavating the pit is required, cost is not required and maintenance work can be easily performed. In addition, the layout of the panel forming line can be freely changed, and a preparatory operation before starting work, unlike a hydraulic cylinder, is not required.

Further, the rotation of the driving device 16 from the motor 41 is reduced to 1/1 and 1/1.
The first-stage speed reduction mechanism 42 is configured to include a first-stage speed reduction mechanism 42 that can be changed in two stages from 00 to 00. Since the speed reduction ratio is changed from 42 to 1/100, the initial falling speed at the time of demolding can be made very slow, so that the surface layer separation of the molded product W can be prevented.

In the above-described embodiment, the deceleration at the time of demolding is performed by switching the first-stage reduction mechanism 42. However, the deceleration may be performed by controlling the speed of the motor 41.

Further, in the above embodiment, the limit switch 53 detects that the undulating frame 15 is tilted by a predetermined angle from the upright state.However, for example, an encoder is directly connected to the motor 41, and the rotation angle of the motor 41 is changed by the encoder. Electrical detection may be used to detect that the rotation angle of the motor 41 is a predetermined angle, that is, that the undulating frame 15 is tilted by a predetermined angle from the upright state.

〔The invention's effect〕

As described above, according to the present invention, since the undulating operation of the undulating frame is performed by the driving device including the motor, equipment and maintenance work can be easily performed, and furthermore, the demolding that can prevent surface layer peeling at the time of demolding can be prevented. An apparatus can be provided.

[Brief description of the drawings]

1 shows an embodiment of the present invention. FIG. 1 is a plan view,
FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a block diagram. 11: Base frame, 12: Rotating shaft, 15: Up / down frame, 16: Drive device, 21: Formwork device, 41: Motor, 51: Control device, 53: Limit switch (detection means).

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-332292 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B28B 11/00-19/00

Claims (1)

(57) [Claims] 1. A base frame, an up-and-down frame provided on the base frame via a rotation shaft so as to be able to move up and down, and an up-and-down frame which lifts and carries down a loaded form device in an upright state. A driving device that includes a motor that causes the undulating frame to switch the undulating speed, a detecting unit that detects that the undulating frame is tilted by a predetermined angle from the upright state to the falling direction, and driving the driving device to drive the driving device. A control device that causes the undulating frame to perform an undulating operation, and that switches the driving device to a very slow speed until the detecting unit detects that the undulating frame is tilted by a predetermined angle in the falling direction from the upright state. Characteristic demolding device.