JPH0614967Y2 - Lid opening device for formwork for concrete blocks - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a lid opening device for a concrete block formwork, and in particular, can simultaneously and reliably open the lids arranged on both sides of the formwork body. The present invention relates to a lid opening device.

[Prior Art] Conventionally, as disclosed in, for example, Japanese Utility Model Laid-Open No. 55-85814, holes are formed in both side surfaces of a frame body having a substantially cylindrical shape, and the holes are formed in the frame body. A concrete block formwork that is curved inward and is closed by a lid that opens and closes with its lower end as an axis to form a recessed portion in the block body is generally known.

[Problems to be solved by the invention] By the way, in this type of formwork, the lid body is closed and fastened to the formwork body through a metal before inserting the ready-mixed concrete into the formwork body. It is necessary to close the holes, and before the demolding of the concrete block, it is necessary to open the lid and pull out the protruding portion thereof to the outside of the mold body.

However, conventionally, there is a problem in that the work of opening the lid is solely dependent on human power, so that the work is not easy and the production of the concrete block cannot be completely automated.
In addition, when the lid opening work is performed manually in the automation line, the work is done while the molds are being continuously transported, so the work is dangerous and the lid should be opened. There is also the problem of having to stop the entire line if you forget.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a lid opening device for a concrete block formwork capable of safely and reliably opening the lid and completely automating the production of the concrete block. To aim.

[Means for Solving the Problems] As means for achieving the above object, the present invention provides a substantially cylindrical mold body having holes on both sides thereof; and a lower end attached to both sides of the frame body, respectively. A lid body that swings inward and outward with the fulcrum as a fulcrum to close each of the holes from the outer surface side; locking fittings that project upward from each of the lid bodies; and a position above each lid body of the mold body. Retaining members that are respectively attached and are urged to swing upward by spring force; and upwardly fixing members that are respectively provided on these respective retaining members and that are engaged and locked by the respective locking members to temporarily fix the lid body in a closed state. A device for opening both lids of a concrete block formwork, comprising: locking recesses; operation members fixed to each lid and extending in the horizontal direction; at a position below a fixed frame. Arranged and first drive A first frame which is driven up and down by a power source; mounted on the first frame, and when the first frame descends, presses both stoppers on both sides of the formwork main body from above to release the engagement with the locking fixtures A releasing member; a second frame which is disposed between the fixed frame and the first frame and which is vertically driven by a second drive source independently of the first frame; and an upper end portion is pivotally attached to the second frame. And swings in the opening / closing direction of the lid,
A pair of opening and closing pawls whose lower ends are inserted between the operation members of the lids on both sides by lowering the frame; and a pair of opening and closing pawls mounted on the second frame and swinging the pair of opening and closing pawls in the opposite direction And a claw drive mechanism for simultaneously opening the lid body via the operation member.

In the present invention, it is preferable that a plurality of release members and a pair of opening / closing pawls are provided at predetermined intervals in the longitudinal direction of each frame.

[Operation] In the lid opening device for a concrete block mold according to the present invention, when the lids on both sides of the mold body are opened, the first frame is lowered by the first drive source, and the releasing member is used. Press both stoppers on both sides of the mold body from above. As a result, the engagement between the stopper and the stopper is released, and the lid can be opened. Therefore, the second frame is lowered by the second drive source, and the lower ends of the pair of opening and closing claws are inserted between the operating members of the lids on both sides. And
The pair of opening / closing pawls is swung outward by the pawl drive mechanism, and the lids on both sides are simultaneously opened via the operation member.

Further, in the present invention, by providing a plurality of pairs of the release member and the pair of opening / closing claws at predetermined intervals in the longitudinal direction of each frame, it is possible to simultaneously open the lids of a plurality of molds.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an example of a lid opening device for a concrete block formwork according to the present invention, and FIGS. 4 and 5 show concrete whose lid is opened by the lid opening device. An example of the block formwork is shown.

First, the concrete block formwork will be described.

As shown in FIGS. 4 and 5, the concrete block formwork 1 is provided with a cylindrical formwork body 2 that forms a block joint end portion and a block body portion. A face plate (not shown) having irregularities for press mirror surface molding is attached to the lower end opening, and legs 3 for lifting the face plate from the ground surface are provided at the four corners of the lower end of the mold body 2. The face plate is welded to allow free fall.

As shown in FIG. 4, a hole 2a that curves toward the center is provided at a portion corresponding to a notch to be provided in the block body portion of the mold body 2, and the hole 2a is the hole 2a.
The lid 4 that is curved following the shape of a is closed from the outer surface side.

As shown in FIGS. 4 and 5, the lid 4 is reinforced by the end reinforcing plates 5, the central reinforcing plate 6 and the connecting plate 7, and the lower ends of the central reinforcing plate 6 and the connecting plate 7 are It is welded and fixed to a fulcrum cylinder 9 rotatably mounted on the fulcrum shaft 8. As a result, the lid body 4 is opened to the outside with the fulcrum shaft 8 as an axis, as shown by the alternate long and short dash line in FIG.

Further, as shown in FIGS. 4 and 5, a round rod-shaped operating member 10 extending in the horizontal direction is welded to the upper end position of the end reinforcing plate 5 of the lid body 4, and the operating member 10 is attached to the operating member 10. When the lid opening device 30 described later opens the lid 4, the lid opening device 30 is engaged. This will be described later in detail.

As shown in FIGS. 4 and 5, on the upper portion of the lid body 4, there is provided a locking metal 11 projecting upward from the central reinforcing plate 6 in a gate shape. The upper end portion is snap-locked to a stopper plate 12 installed above the lid body 4 to temporarily fix the lid body 4 in the closed state.

As shown in FIG. 4, the stopper plate 12 is attached to a portal-shaped mounting piece 13 fixed to the mold body 2 via a fulcrum pin 14 so as to be vertically swingable. A spring (not shown) that constantly urges the stopper plate 12 to swing upward is mounted on the.

As shown in FIG. 4, in the central portion of the upper surface of the stopper plate 12, an upward engaging recess 15 for engaging the engaging member 11 is provided.
Is provided, and at the top end of the stopper plate 12,
As shown in FIG. 4, a guide slope 16 is provided for guiding the lock 11 to the lock recess 15 when the lid 4 is closed. Then, the stopper plate 12 is pressed from above by the lid body opening device 30 when the lid body 4 is opened by the lid body opening device 30 to be described later, and the engagement with the latch 11 is released. Has become.

On the other hand, as shown in FIGS. 4 and 5, a U-shaped actuating metal fitting 17 that is welded to the fulcrum cylinder 9 and operates integrally with the lid 4 is arranged at the lower end of each lid 4. The hook arm 18 is operated in conjunction with the U-shaped operation fitting 17.

As shown in FIG. 4, the hook arm 18 has an intermediate portion in the longitudinal direction swingably attached to the formwork body 2 via a fulcrum shaft 19, and the hook 18a at the lower end of the hookarm 18 causes the formwork body 2 to move. A face plate (not shown) arranged at the lower end is floated from the ground surface to be supported. The hook arm 18 is, as shown by the alternate long and short dash line in FIG.
The lid 4 swings in conjunction with the opening of the lid 4 to release the support of the face plate by the hook 18a.

In addition, in FIG. 4 and FIG. 5, 20 is a handle of the concrete block formwork 1.

On the other hand, as shown in FIG. 1, the lid opening device 30 for opening the lid 4 of the concrete block formwork 1 having the above-described configuration is installed upright on both sides of the transport line 21 of the concrete block formwork 1. As shown in FIG. 2, fixed frames 32a, 32b, 32c, and 32d are provided between the upper ends of the support frames 31 on both sides, and are located below them. The first frame 33 and the second frame 34 located between the first frame 33 and the fixed frames 32a to 32d are supported so as to be able to move up and down.

That is, the first frame 33 is the same as that shown in FIGS.
As shown in the figure, it is composed of a deformed I-shaped steel, and on its lower surface, for example, six support members 35 are fixedly installed at a required interval in the longitudinal direction via a reinforcing plate 36. Pressing rollers 37 are rotatably attached to both ends of the support member 35 in the width direction of the transport line 21.

Further, as shown in FIG. 2, on the upper surface side of the first frame 33, the tips of the rods 38a of the two air cylinders 38 mounted on the fixed frame 32a penetrate through the second frame 34, which will be described later, and are connected. The first frame 33 is
By vertically expanding and contracting both air cylinders 38, the air cylinders 38 are moved up and down.

As shown in FIG. 2, two guide rods 39 penetrating a second frame 34, which will be described later, are erected on the upper surface side of the first frame 33, and the upper ends of the respective guide rods 39. The part is slidably inserted into a guide tube 40 welded to the fixed frame 32b, and guides the up and down movement of the first frame 33. Then, by lowering the first frame 33, as shown in FIG. 4, the stopper plates 12 on both sides of the concrete block formwork 1 are pressed from above by the pressing rollers 37, and engage with the locking bar 11. Is forcibly released so that the lid 4 can be opened.

On the other hand, the second frame 34 located above the first frame 33 is made of H-shaped steel as shown in FIGS. 1 and 2, and has support plates 41 at both ends in the longitudinal direction.
Are welded respectively.

As shown in FIG. 1 and FIG. 2, two rotary shafts 42 are rotatably supported between the two support plates 41 at intervals in the width direction of the transfer line 21. Both rotary shafts 42 are moved by the interlocking mechanism 43 shown at the left end of FIG.
It is designed to rotate in the same direction in the opposite direction in conjunction with each other.

As shown in FIG. 3, the interlocking mechanism 43 includes an upper arm 43a fixed to a right rotation shaft 42 and a left rotation shaft 4a.
2, the lower arm 43b fixed to the second arm 43 and these both arms 43
When the right rotation shaft 42 rotates clockwise, for example, and the upper arm 43a swings to the position shown by the chain line, this movement is connected. Lower arm 43 via arm 43c
The rotation shaft 42 on the left side is rotated counterclockwise by the same amount by being transmitted to b.

As shown in FIG. 1, each of the rotating shafts 42 is fixedly provided with upper end portions of a pair of left and right opening and closing claws 44 whose lower end portions are located inside the pressing rollers 37 on both left and right sides. The lower end portion of the claw 44 is opened and closed in the left-right direction in FIG. 1 by the rotation of both rotation shafts 42 in the opposite direction.

As shown in FIG. 2, six sets of the opening / closing claws 44 are provided corresponding to each pressing roller 37.
Is composed of two rollers on both sides of the pressing roller 37. As a result, the lid 4 can be opened without any problem while the stopper 12 is being pressed by the pressing roller 37. This will be described later in detail.

As shown in FIGS. 1 and 2, two sets of left and right lower end portions of a pair of left and right drive arms 45 are welded to each of the rotating shafts 42, and between the upper end portions of the pair of drive arms 45 is welded. ,
The air cylinders 46 are connected to each other. And
By simultaneously expanding and contracting both air cylinders 46, both rotary shafts 42 are rotated.

On the other hand, as shown in FIG. 2, the tips of the rods 47a of the two air cylinders 47 mounted on the fixed frame 32c are connected to the upper surface side of the second frame 34, and the second frame 34 is By simultaneously expanding and contracting both of these air cylinders 47, the air cylinders 47 are lifted and lowered independently of the first frame 33.

As shown in FIG. 2, two guide rods 48 are erected on the upper surface side of the second frame 34, and the upper ends of the guide rods 48 are welded to the fixed frame 32d. It is slidably inserted into the guide cylinder 49 and guides the up and down movement of the second frame 34. Then, as shown in FIG. 4, the second frame 34 is lowered, the lower ends of the pair of opening / closing pawls 44 are inserted between the operating members 10 of the lid bodies 4 on both sides, and the opening / closing pawls 44 are opened in this state. The lid 4 is pushed outward through the operation member 10 to open the lid 4.

Next, the operation of this embodiment will be described.

The concrete block formwork 1 is carried on the carrying line 21 in a state of being fixed to a pallet (not shown) in a set of six, for example, after steam-hardening the concrete cast therein, and the lid body It stops until it reaches the position of the opening device 30. Then, the lids 4 of the six concrete block forms 1 are simultaneously opened by the lid opening device 30.

When opening the lid 4, first, the two air cylinders 38 are simultaneously extended and actuated to lower the first frame 33. Then, as shown in FIG. 4, the stopper plates 12 arranged on both sides of each concrete block formwork 1 are pressed from above by the pressing roller 37 and swing downward against the biasing force of the spring. . And by this, each lid 4
The engagement with the lock 11 is released, and the lid 4 is in a state where it can be opened.

Next, the two air cylinders 47 are simultaneously extended and actuated to lower the second frame 34. At this time, the air cylinder 46 is preliminarily extended so that the pair of open / close pawls 44 is closed as shown in FIG.

In this state, when the second frame 34 descends to the bottom dead center, as shown in FIG. 4, the lower ends of the pair of opening / closing claws 44 are inserted between the operating members 10 of the lids 4 on both sides. . Therefore, the air cylinder 46 is reduced and the pair of open / close pawls 44 is opened. Then, the operating members 10 are pressed from the inner side to the outer side by the opening / closing claws 44, and the lid bodies 4 on both sides are opened.

At this time, as the lid 4 is opened, the upper end of the lock 11 passes under the pressure roller 37.
If the air cylinder 38 is left extended, the upper end of the lock 11 may come into contact with the pressing roller 37, and the lid 4 may not open further. Therefore, if the lock 11 comes out of the lock recess 15 of the stopper 12, the air cylinder 38 is contracted so that the upper end of the lock 11 does not contact the pressing roller 37.

When the lid body 4 is opened, its movement is transmitted to the hook arm 18 via the U-shaped actuating metal fitting 17, and as shown by the alternate long and short dash line in FIG. 4, the hook 18a does not support the face plate (not shown). It will be canceled.

After the lid body 4 is opened, the lid body opening device 30 is returned to the original state shown in FIG. 1, and thereafter, the same operation is repeated and the lid body 4 is sequentially opened.

Since the opening operation of the lid 4 can be automatically performed by using the lid opening device 30, the concrete block manufacturing can be completely automated and the operation is not dangerous. At the same time, the unopened lid 4 does not occur.

Further, since six concrete block forms 1 can be handled at the same time, the efficiency of the lid opening work is high, and the lid opening work becomes a bottleneck, which deteriorates the efficiency of the entire concrete block manufacturing line. Absent.

In addition, in the said Example, although the case where six concrete block forms 1 were handled simultaneously was demonstrated,
There is no limit to the number.

[Effects of the Invention] As described above, the present invention lowers the first frame and presses both stoppers on both sides of the mold body from above by the release member, and lowers the second frame to open and close the pair of opening and closing members. Insert the lower end of the claw between the operating members of the lids on both sides,
In this state, the pair of opening and closing claws are opened to open the lids on both sides at the same time.
The lid can be opened easily and surely.

[Brief description of drawings]

FIG. 1 is a structural view showing a lid opening device for a concrete block formwork according to an embodiment of the present invention, and FIG. 2 is a view of FIG.
II-II sectional view, FIG. 3 is an enlarged view of the interlocking mechanism as viewed from the left side of FIG. 2, and FIG. 4 is a configuration diagram showing an example of a concrete block formwork handled by the lid opening device, FIG. 5 is a right side view of FIG. 1: Concrete block formwork 2: Formwork body 2a: Hole 4: Lid body, 10: Operation member 11: Locking metal, 12: Stopper 15: Locking recess, 17: U-shaped operating metal fitting 18: Hook Arm, 21: Conveyance line 30: Lid opening device, 31: Support frame 32a, 32b, 32c, 32d: Fixed frame 33: First frame, 34: Second frame 35: Support member, 37: Pressing roller 38, 46 , 47: Air cylinder 42: Rotating shaft, 43: Interlocking mechanism 44: Opening / closing claw, 45: Drive arm

Claims (2)

[Scope of utility model registration request] 1. A substantially cylindrical mold frame body having holes on both sides, respectively, attached to both side parts of the frame body, and swinging inward and outward with a lower end as a fulcrum to move the holes to the outer surface side. Lids that are respectively closed from the above, locking metal fittings that project upward from each of these lids, and are attached to positions above the respective lids of the mold body,
Locking members that are urged to oscillate upward by spring force, and upward locking recesses that are respectively provided on these locking members and that lock the fittings by fitting and locking the lid temporarily in the closed state. A device for opening both lids of a concrete block formwork, each of which is fixed to each of the lids and extends in the horizontal direction, the device being arranged below the fixed frame. A first frame which is driven up and down by a drive source, and which is attached to the first frame, and which is pushed down to press both stopper fittings on both sides of the mold body from above to engage with the locking fittings. And a second frame which is arranged between the fixed frame and the first frame and which is driven up and down independently of the first frame by a second drive source, and an upper end portion of the second frame. Before being pivoted A pair of opening and closing claws, which swing in the opening and closing direction of the lid and whose lower end is inserted between the operation members of the lids on both sides when the second frame descends, and a pair of opening and closing pawls attached to the second frame. A pawl drive mechanism for swinging pawls in the opposite direction to simultaneously open the lids on both sides of the formwork body through the operating member, a lid opening device for a concrete block formwork. 2. The lid opening device for a concrete block formwork according to claim 1, wherein a plurality of sets of the release member and the pair of opening and closing claws are provided at predetermined intervals in the longitudinal direction of each frame.