JP2530420Y2 - Demolding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a demolding device for removing a concrete secondary product from a formwork and transporting the product to a predetermined place.

(Conventional technology) In a production line of a concrete secondary product such as a gutter block or a culvert block using a formwork, a so-called demolding step of taking out a cured product from the formwork after the curing step and transporting the product to a predetermined place is required.

In the demolding step, usually, a suction machine having a suction pad, suction means such as a vacuum pump for exerting a suction action on suction holes of the suction pad, and an orthogonal coordinate system for moving the suction machine vertically and horizontally are used. A demolding device including a moving mechanism is used. In this demolding apparatus, the product is taken out from the mold and moved to a predetermined location by moving the adsorber in a predetermined direction after adsorbing the product by bringing the suction pad into close contact with the upper surface of the concrete secondary product in the mold. Can be transported.

(Problems to be solved by the invention) By the way, in the production line of concrete secondary products,
In response to a demand for high-mix low-volume production, various types of molds having different heights, widths, and lengths are flown to produce various products at the same time.

However, since the adsorber used in the conventional demolding apparatus is of a type corresponding to the type, if the width and length of the product upper surface, that is, the dimensions of the surface to be adsorbed change, these products cannot be adsorbed satisfactorily. There are drawbacks.

The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to accurately adsorb each product even when the size of the surface to be adsorbed of the product to be released is variously different. It is to provide a mold device.

(Means for Solving the Problems) In order to achieve the above object, in claim (1), a concrete secondary product has a contact portion capable of adhering to a surface to be adsorbed and a suction hole formed inside the contact portion. A demolding device comprising an adsorber, a suction means for exerting a suction action on a suction hole, and a moving mechanism capable of moving the adsorber at least two-dimensionally, for removing a concrete secondary product from a mold and transporting the product to a predetermined place. In the apparatus, the adsorber is provided with a main body having a flat lower surface, a plurality of annular contact portions different in size provided concentrically on the lower surface of the main body, and a contact portion inside each annular contact portion. And a plurality of suction holes formed.

According to a second aspect of the present invention, there is provided the demolding device according to the first aspect, further comprising: a detecting unit configured to detect a size of a surface to be sucked of the concrete secondary product; And suction control means for controlling the suction action from the suction port to each suction hole.

(Function) In the demolding of the concrete secondary product by the demolding apparatus according to claim (1), the concrete secondary product is adsorbed by a plurality of annular contact portions provided concentrically on the lower surface of the main body of the adsorber. A suction action is exerted on the suction holes of one or more annular contact portions adapted to the size of the surface, and the contact portions are brought into close contact with the contact surface of the concrete secondary product in the formwork to remove the product. Suction is performed by moving the suction machine in a predetermined direction in the suction state.

Further, in the demolding device according to claim (2), based on the size of the surface to be adsorbed of the concrete secondary product, the suction is automatically performed into one or a plurality of annular close-contact suction holes adapted to the adsorption. The action is exerted.

(Embodiment) FIGS. 1 to 8 show one embodiment of the present invention.
FIG. 1 is a side view of the demolding apparatus, FIG. 2 is a bottom view of the adsorber,
FIG. 3 is an enlarged sectional view taken along the line III-III of FIG. 2, FIG. 4 is a circuit diagram of an adsorption system, FIGS. 5 to 7 are operation explanatory diagrams, and FIG. FIG.

First, the configuration of the demolding device will be described with reference to FIGS.

In the drawing, reference numeral 1 denotes a fixed frame established on the ground J or the like, and two guide rails 1a for a traveling platform, which will be described later, are provided in parallel and horizontally at an interval on the upper surface thereof.

Reference numeral 2 denotes a traveling platform that horizontally moves on the fixed frame 1, and the platform body
2a, four legs 2b suspended from the lower surface of the base body 2a, and two rotating shafts 2c rotatably supported by the opposing legs 2b.
And four guide rollers 2d fixed to the end of each rotating shaft 2c and engaged with the guide rail 1a, and a traveling motor 2e for rotating and driving one (left side in the figure) rotating shaft 2c. ing. That is, the traveling platform 2 can move horizontally on the fixed frame 1 along the guide rail 1a by the operation of the traveling motor 2e.

Reference numeral 3 denotes two elevating guides arranged vertically through the base body 2a, 4 denotes two elevating shafts supported by the respective elevating guides 3 so as to be vertically movable, and 5 is connected to lower ends of the two elevating shafts 4. It is a lift platform.

Reference numeral 6 denotes two adsorbers arranged side by side on the lower surface of the elevating table 5. Each adsorber 6 is a flat body 6a having a flat lower surface.
And a total of four annular contact portions 6b1 to 6b4 concentrically provided on the lower surface of the main body 6a, and 1 formed inside the annular contact portions 6b1 to 6b4 corresponding to the contact portions, respectively. And two or more suction holes 6c1 to 6c4. Each of the annular contact portions 6b1 to 6b4 is formed in a substantially rectangular shape by fitting a ring-shaped member made of synthetic rubber into an annular groove 6a1 formed on the lower surface of the main body 6a as shown in an enlarged cross section in FIG. And have the same height.

Reference numeral 7 denotes a width detector provided in each of the suction machines 6, and as shown in an enlarged cross-section in FIG. 3, each width detector 7 includes a bracket 7a provided on the upper surface of the main body 6a on the non-opposing side. A total of four detection pins 7b1 to 7b4, which are vertically movably arranged on the bracket 7a and project from the lower surface of the main body 6a, and a total of four coil springs 7c for urging the detection pins 7a1 to 7a4 downward.
And a total of four limit switches 7d that are activated by raising the detection pins 7a1 to 7a4. Each detection pin 7b
The protruding positions of 1 to 7b4 correspond to the maximum width positions of the respective annular contact portions 6b1 to 6b4, and the annular contact portions in the no-load projecting state.
Each has the same height at a position slightly lower than 6b1 to 6b4.

Reference numeral 8 denotes an elevating mechanism provided on the traveling platform 2, and the platform body 2a
Lifting motor 8a arranged on the upper surface of the base body 2a, a pair of supporting members 8b protruding from the upper surface of the base body 2a, a rotating shaft 8c rotatably supported by the supporting member 8b, and both ends of the rotating shaft 8c. And a lifting chain 8e wound around each sprocket 8d and having a lower end connected to the upper surface of the lifting table 5;
It comprises a lifting member 8f and a transmission member 8f such as a belt connecting the rotating shaft 8c. That is, in the elevating mechanism 8, the elevating chain 8e is wound or unwound by each sprocket 8d by the operation of the elevating motor 8a, so that the elevating table 5 and each of the suction machines 6 can be moved up and down along the elevating guide 3. I have.

Next, with reference to FIG. 4, a circuit of an adsorption system in the demolding apparatus will be described.

In the figure, reference numerals 6c1 to 6c4 denote each of the annular contact portions 6b described above.
Suction holes 1 to 6b4, 11 is a vacuum pump for suction, 12 is a 2-port main valve, 13 is a vacuum chamber, 14 is a compressor for pressure feeding, 15 is a 3-port switching valve for switching between suction and pressure feeding, 16 to 16 Reference numeral 18 denotes a two-port sub-valve corresponding to each of the suction holes 6c2 to 6c4.

The main valve 12 is switched from the closed state to the open state by the operation of the limit switch 7d corresponding to the detection pin 7b1, and the sub-valves 16 to 18 are connected to the respective detection pins 7b2.
The closed state is switched from the closed state to the open state by the operation of the limit switch 7d corresponding to 7b4. For example, when only the limit switch 7d corresponding to the innermost detection pin 7b1 is operated, a suction action is exerted on the suction hole 6c1 of the innermost annular contact portion 6b1, and all the detection pins 7b1 to 7b4 are supported. Limit switch 7d
Is activated, a suction effect is exerted on the suction holes 6c1 to 6c4 of all the annular contact portions 6b1 to 6b4. Further, by switching the switching valve 15 from the suction side to the pressure feeding side, the air compressed by the compressor 14 can be discharged from the suction holes 6c1 to 6c4 according to the valve opening / closing state.

Next, with reference to FIGS. 5 to 8, the operation of the above-described removal device will be described.

In the figures, K is a mold formed so that the end plate and side plate can be opened and closed, S is a product such as a side groove block formed by the mold K,
P is a pallet on which the frame K is placed, R is a roller conveyor for transporting the pallet P in a predetermined direction, and the product S shown in the drawing has an upper surface having a width and a length larger than those of both the suction machines 6. .

After the curing process is completed, when the mold K on which the mold has been opened on the pellets P comes directly under both the adsorbers 6, the lifting motor 8a of the lifting mechanism 8 is operated as shown in FIG. Rotate 8c and both sprockets 8d to raise and lower tune 8e
The lifting shaft 4 is lowered along the lifting guide 3 together with the lifting table 5 and the suction device 6. This lowering stops the operation of the elevating motor 8a when the annular contact portions 6b1 to 6b4 of the adsorber 6 come into close contact with the upper surface of the product S.

Before the annular contact portions 6b1 to 6b4 are in close contact with the upper surface of the product S, all the detection pins 7b1 to 7b4 projecting from the lower surface of each suction device 6 are connected to the product S as shown by a two-dot chain line in FIG. It is pressed into contact with the upper surface, and all the corresponding limit switches 7d operate. Thereby, the main valve 12 and the sub-valves 16 to 18 of the suction circuit shown in FIG. 4 are opened, and the suction holes 6c1 to 6c6 of all the annular contact portions 6b1 to 6b4 are opened.
The suction force acts on c4, and the upper surface of the product S is adsorbed by both adsorbers 6.

When the suction of the product S is completed, as shown in FIG. 6, the elevating motor 8a of the elevating mechanism 8 is operated in the opposite direction to the above, and the rotating shaft 8c and both sprockets 8d are rotated to lift the elevating tune 8e. The take-up and lifting shaft 4 is raised along the lifting guide 3 together with the lifting table 5 and the suction device 6. Since the product S is taken out of the mold K by this ascent, the operation of the elevating motor 8a is stopped when both the suction machines 6 return to the initial positions.

When the ascent is stopped, as shown in FIG. 7, the traveling motor 2e of the traveling platform 2 is operated, and the traveling platform 2 is horizontally moved along the guide rail 1a, so that the product S in the suction state is moved.
Is moved to a predetermined location, for example, a belt conveyor position.

When the movement is ended and the suction is released, the switching valve 15 of the suction circuit shown in FIG. 4 is switched to the pressure feeding side. Thereby, the suction holes 6c1 to 6c4 of all the annular contact portions 6b1 to 6b4
The product S that has been sucked is quickly separated from the annular contact portions 6b1 to 6b4. After the product S has detached from each adsorber 6, the carriage 2 returns to the initial position and returns to the standby state.

In addition, as shown by the three-dot chain line in FIG. 8, when a product Sa having a smaller width than each adsorber 6 is to be removed, two annular close contact portions 6b1 and 6b2 closer to the inner side are formed of the product Sa. Prior to the close contact with the upper surface, only the two detection pins 7b1 and 7b2 protruding from the lower surface of each adsorber 6 are pressed against the upper surface of the product Sa, and the corresponding limit switches 7d are activated.
Thereby, the main valve 12 of the suction circuit shown in FIG.
Then, the sub-valve 16 is opened, and a suction force acts on the suction holes 6c1 and 6c2 of the annular contact portions 6b1 and 6b2, so that the upper surface of the product Sa is suctioned by both suction machines 6. It goes without saying that even when a product having a width other than the above is to be removed from the mold, the suction force is applied to the suction hole of the annular contact portion adapted to the width of the product, so that the suction is appropriately performed.

In addition, in the embodiment, two suction machines 6
Are arranged side by side along the length direction of the product, so if the length of the product to be removed is shorter than the total length of both adsorbers 6, the width detector 7 of one of the adsorbers 6 By operating, the suction is performed by only one suction machine 6.

As described above, in the present embodiment, of the four annular contact portions 6b1 to 6b4 provided concentrically on the lower surface of the main body of each adsorber 6,
By causing a predetermined number of suction holes of the annular contact portion adapted to the size of the upper surface of the product to exert a suction effect, it is possible to accurately suction products having different upper surface dimensions.

Further, the width and length of the product are detected by the width detectors 7 of the two suction machines 6 arranged side by side on the lower surface of the elevating table 5, and each valve of the suction circuit is operated based on the detection signal to perform suction. Since the suction action can be exerted on the suction holes 6c1 to 6c4 of the suction device 6 which is appropriate for the above, even if products having different top dimensions are fed one after another, suction suitable for each product can be continuously performed. .

The number of the suction machines and the number of the annular contact portions provided in the suction machine can be appropriately increased or decreased according to the upper surface dimension range of the product to be removed. Further, the shape of the annular contact portion is not limited to the substantially square shape shown in the figure, but may be another shape such as a circle or an ellipse.

(Effects of the Invention) As described above in detail, according to the demolding device of the first aspect, the product to be adsorbed is selected from among the plurality of annular contact portions provided concentrically on the lower surface of the main body of the adsorber. By exerting a suction effect on one or a plurality of suction holes of the annular contact portion adapted to the size of the surface, there is an advantage that each product having a different surface to be suctioned can be accurately suctioned.

According to the demolding device of the present invention, the size of the surface to be sucked of the product is detected by the detecting means, and the suction action is applied to the suction hole suitable for suction according to the size of the surface to be sucked. Since it can be exerted, there is an advantage that even if products having different suction surfaces are successively fed, suction appropriate for each product can be continuously performed.

[Brief description of the drawings]

1 to 8 show one embodiment of the present invention. FIG. 1 is a side view of a demolding device, FIG. 2 is a bottom view of an adsorber, and FIG. Fig. 4 is an enlarged sectional view taken along the line III, Fig. 4 is a circuit diagram of the suction system, Figs. 5 to 7 are operation explanatory diagrams, and Fig. 8 is a diagram showing the correspondence between the suction machine and the product. In the figure, 1 ... fixed frame, 2 ... traveling platform, 5 ... elevating platform, 6
... Adsorber, 6a ... Main body, 6b1 to 6b4 ... Circular contact portion, 6c1 to 6c4 ... Suction hole, 7 ... Width detector, 7b1 to 7b4 ... Detection pin, 7d ... Limit switch, 11 ... Vacuum pump, 12 ... Main valve , 16-18 ... Sub-valves.

Claims (2)

(57) [Scope of request for utility model registration] 1. A suction device having a contact portion capable of closely adhering to a surface to be adsorbed of a concrete secondary product and a suction hole formed inside the contact portion, suction means for causing the suction hole to exert a suction action, and the suction device And a moving mechanism capable of moving the adsorber at least two-dimensionally, wherein the adsorber is provided with a main body having a flat lower surface, and a plurality of annular members of different sizes provided concentrically on the lower surface of the main body. A demolding device comprising: a contact portion; and a plurality of suction holes formed inside the respective annular contact portions corresponding to the contact portions. 2. A detecting means for detecting a size of a surface to be sucked of a concrete secondary product, and a suction control means for controlling a suction action from the suction means to each suction hole according to the size of the surface to be sucked. The demolding device according to claim 1, which is provided.