JPH0420575Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The invention relates to formwork for concrete blocks.
In particular, the present invention relates to a concrete block formwork in which lids placed on both sides of the formwork body can be easily opened and closed by mechanical power without using human power.

[Prior Art] Conventionally, as shown in, for example, Japanese Utility Model Application Publication No. 55-85814, holes are bored on both sides of a roughly cylindrical form body, and these holes are inserted into the form body. A formwork for a concrete block is generally known, which is closed with a lid which is curved inward and opens and closes about its lower end, and which forms a concave portion in the body of the block.

By the way, in this type of formwork, before pouring fresh concrete into the formwork, it is necessary to close the holes in the formwork body by fastening the lid to the formwork body via a stopper metal. Prior to demolding the concrete block, it is necessary to open the lid and pull out the protruding portion from the formwork body. However, in the past, the work of opening the lid body relied exclusively on manual labor, which caused problems in that the work was not easy and the manufacture of concrete blocks could not be automated. In addition, when opening the lid manually on an automated line, the work is carried out while the formwork is being continuously transported, which is not only dangerous, but also makes it difficult to open the lid. There is also the problem that if you forget, you have to stop the entire line.

Therefore, the present applicant previously proposed in Utility Model Application No. 61-49867 a lid opening device for concrete block formwork that can simultaneously and reliably open the lids on both sides of the formwork body.

[Problem to be solved by the invention] By using the concrete block formwork lid opening device previously proposed by the present applicant, the lid opening work can be performed automatically, and the formwork shape can be removed automatically. The concrete block manufacturing process after assembly can be completely automated.

However, when trying to construct a line that circulates the formwork and completely automates the entire process from mold setting to demolding, the mold assembly work to close the lid must be done manually even if the lid opening work is used. I have no choice but to. This work is carried out while the formwork is being transported continuously, and within a limited period of time just before pouring the fresh concrete, so it is not only dangerous, but also difficult to assemble the formwork. There is a problem in that if the work is not completed in time, the entire line must be stopped immediately.

This idea was created in view of the current situation,
We provide formwork for concrete blocks that can be easily automated, allowing not only the opening of the lid but also the mold-assembling work for closing the lid to be carried out reliably with extremely simple movements such as moving the operating member up and down. The purpose is to

Another object of the present invention is to provide a formwork for a concrete block in which a face plate for press mirror surface forming can be easily and reliably held in and released from the formwork body.

[Means for Solving the Problems] The present invention provides a cylindrical form body that forms a block mating end and a block trunk; a hole corresponding to the notch to be provided on the side surface of the body; a lid body whose lower end is pivoted to the form body and swings in and out directions to open and close the hole from the outside; a position near the upper end of this lid body; an interlocking member fixed in the horizontal direction to; a pair of locking metal fittings provided on both sides of the lid through the lid on the upper part of the formwork body so as to be able to swing up and down; an engaging recess in which both ends of the interlocking member are fitted and locked, respectively, and the lid body is opened and closed within a certain range by the swinging of both locking metal fittings; an operating member for connecting the metal fittings; the engaging recess is moved to a position regulated by the engaging recess and the interlocking member by moving the operating member upward and swinging both the locking metal fittings upward; The present invention is characterized in that the lid is opened and the operating member is lowered to swing both locking fittings downward, thereby closing the lid and holding it in the closed position.

In the present invention, a face plate for press mirror surface molding that can be held by a holding mechanism that is linked to the opening and closing operation of the lid is arranged at the lower end of the mold body, and this face plate can be held by the closing operation of the lid. It is preferable that the holding mechanism holds the holding mechanism and fixes it to the lower end of the form body, and that the holding mechanism releases the face plate holding by the opening operation of the lid.

[Function] In the concrete block formwork according to the present invention, by lifting the operating member upward, both locking fittings swing upward, and both ends of the interlocking member that are fitted into the engagement recess and locked. is pushed outward. Then, a force is applied to the lid in the opening direction, and the lid opens to a position where it is regulated by the engagement recess and the interlocking member.

On the other hand, by pressing the operating member from above and lowering it, both locking metal fittings swing downward, and both ends of the interlocking member that are fitted and locked in the engagement recesses are
pushed back inside. Then, a force is applied to the lid in the closing direction, and the lid closes to a position where it comes into close contact with the hole in the formwork body, and is held in this position.

In addition, in the present invention, by providing the form body with a holding mechanism that is linked to the opening and closing operation of the lid,
When the lid is closed, the face plate for press mirror surface molding is fixed to the lower end of the mold body by the holding mechanism, completing all mold assembly work. When the lid is opened, the holding mechanism The holding of the face plate by is released and the mold becomes ready for demolding.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

Figures 1 and 2 show an example of a concrete block formwork according to the present invention.
Reference numeral 1 denotes a cylindrical form body that forms the block mating end and the barrel body, and the open end of this form body 1 on the block mating end side, that is, the form body 1
A face plate 3 having concavities and convexities 2 for press mirror-finishing is arranged at the lower end of the plate.

As shown in FIGS. 1 to 3, a hole 1a that curves inward is provided in a portion of the form body 1 corresponding to the notch to be provided in the block body. is closed from the outside by a lid body 4 that curves to follow the shape of the hole 1a.

As shown in FIGS. 1 to 4, the lower end of this lid body 4 is fixed to a rotating shaft 6 which is rotatably attached to the form body 1 via a support piece 5. 6 as a fulcrum, it swings inward and outward from the closed state shown in FIG. 3 to the open state shown in FIG. 4.

Further, as shown in FIGS. 1 to 4, near the upper end of the lid body 4, a round bar-shaped interlocking member 7 is fixed in the horizontal direction via a reinforcing member 4a, and both longitudinal ends thereof are respectively fitted and locked into engagement recesses 9 provided in a pair of locking metal fittings 8a, 8b located on both sides of the lid body 4.

As shown in FIGS. 1 to 4, each of the locking fittings 8a and 8b has its base end attached to a mounting piece 10 that hangs down from the upper end flange 1b of the form body 1.
is pivotally connected via a fulcrum pin 11 so as to be able to swing up and down, and between these two locking metal fittings 8a, 8b, there is a locking metal fitting 8a, 8b in order to connect the two locking metal fittings 8a, 8b so that they can operate as a unit. A plate-shaped operating member 12 is welded. By moving this operating member 12 up and down by an automatic machine (not shown), the locking fittings 8a and 8b on both sides are simultaneously swung up and down.

Furthermore, as shown in FIGS. 3 and 4, the engagement recess 9 provided in each of these locking fittings 8a, 8b has a notch 13, a lower end of the lower edge of the notch 13, and a lower end of the upper edge of the notch 13. Stopper pin 14 protruding toward
The notch 13 is composed of a holding part 13a at the upper end, and a guide part 13b that is bent in a dogleg shape with respect to the holding part 13a and extends downward. It widens towards the bottom end. Further, the holding portion 13
a is formed and set so that when both the locking metal fittings 8a, 8b are swung to the bottom dead center, as shown in FIG. It is now possible to hold it. Note that this will be detailed later.

On the other hand, as shown in FIGS. 1 to 4, a swing shaft 1 projecting in a U-shape is provided at the lower end of the lid 4.
A cylinder 16 is rotatably attached to the protruding tip of the swing shaft 15.

As shown in FIGS. 1 to 4, the upper end of a hook arm 17 having a hook 17a at the lower end is fixed to the cylinder 16. It is guided by a fixed gate-shaped guide member 18, and its movement in the direction away from the form body 1 is restricted. The hook arm 17 operates in conjunction with the opening/closing operation of the lid 4, and is adapted to hold the face plate 3 at the lower end of the form body 1. That is, the swing shaft 15, the cylindrical body 16, and the hook arm 17 constitute a holding mechanism capable of holding the face plate 3 at the lower end of the form body 1.

Although not shown in FIGS. 1 to 4, the shape of the form body 1 is adjusted so that the face plate 3 rises from the ground surface when the hook arm 17 holds the face plate 3 at the lower end of the form body 1. Legs may be provided at the four corners of the lower end.

Next, the operation of this embodiment will be explained.

When assembling the formwork, first, the formwork main body 1 (see Fig. 4) with the lid body 4 open,
It is placed on the face plate 3 on the conveyance line (not shown). Then, the operating member 12 is pressed downward by an automatic machine (not shown). Then, the operating member 12, which was initially in the state shown in FIG. 4, gradually descends, and the two locking fittings 8a, 8b begin to swing downward. Then, at both ends of the interlocking member 7, the notch 13 of the engagement recess 9, more specifically, the guide portion 1 is formed.
A force is applied to contact the upper edge of 3b and push it inward,
The lid body 4 begins to close. And both locking metal fittings 8a,
8b to the bottom dead center position, both ends of the interlocking member 7 are guided to the holding part 13a of the notch 13, as shown in FIG. 1a to be in a closed state.

On the other hand, when the lid body 4 begins to close, the swing shaft 15 at its lower end moves as shown in FIGS. 3 and 4.
The hook arm 17 swings upward about the rotating shaft 6 as a fulcrum, thereby pulling the hook arm 17 upward. Since the intermediate portion of the hook arm 17 is restricted from moving away from the form body 1 by the guide member 18, the hook arm 17 moves counterclockwise in the figure from the state shown in FIG. 4 with the cylinder 16 as a fulcrum. It will be pulled up while rotating. Thereby, the face plate 3 is held and fixed to the lower end portion of the form body 1 so as to be scooped up from below by the hooks 17a.

When the forming of the formwork is completed in this manner, the formwork is conveyed along the conveyance line to the ready-mixed concrete charging step. And formwork body 1
Ready-mixed concrete is poured into the form body 1 from the upper end opening (not shown), and vibrations are applied to the form body 1 as necessary.

By the way, when fresh concrete is poured into the form body 1, the lid body 4 is pressed with a large force from the inside, but both ends of the interlocking member 7 are held by the holding parts 13a of the notch 13. Therefore, the lid body 4 will never open.

That is, the holding portion 13a is shaped so as to be inclined outward toward the upper end in the closed state of the lid body 4 shown in FIG. Therefore, when a pressing force is applied to the lid body 4 from the inside in this state, both ends of the interlocking member 7 tend to escape along the holding part 13a toward the upper end thereof, and both locking fittings 8a and 8b are , a force is applied to cause it to swing downward. Therefore, no matter how large the pressing force is applied to the inside of the lid 4, there is no possibility that the lid 4 will open.

In this way, once the pouring of fresh concrete is completed, the formwork is transported along the transport line to the steam curing step, where it is steam-cured. Thereafter, the lid 4 is opened and the concrete block is demolded.

When carrying out these operations, first, the upper end of the concrete block is held down through the upper end opening (not shown) of the formwork body 1 with a holding member (not shown) of an automatic machine, and in this state, an automatic machine (not shown) Hook the machine hook onto the operating member 12 and lift it upward. Then, both the locking fittings 8a and 8b swing upward, and both ends of the interlocking member 7 are guided by the engagement recess 9, more specifically, by the lower edge of the guide portion 13b of the notch 13, and are pushed outward. be done. As a result, the lid body 4
is opened to a position where both ends of the interlocking member 7 abut against the stopper pin 14, as shown in FIG.
At this time, the operating member 12 comes into contact with the lower surface of the upper end flange 1b of the form body 1.

When the lid body 4 is opened, the swing shaft 15 at its lower end
pivots downward about the rotating shaft 6, and the hook arm 17 is pressed downward. Hook arm 1
7 is guided by the guide member 18 at its intermediate portion, so that it swings clockwise in the figure while descending from the state shown in FIG. 3, and finally reaches the state shown in FIG. 4. As a result, the holding of the face plate 3 by the hook 17a is released.

After reaching the state shown in FIG. 4, the operating member 12 is further lifted upward by the hook of the automatic machine while the upper end of the concrete block is held down by a holding member of an automatic machine (not shown). Then, the entire formwork body 1 is pulled upward, and the concrete block is demolded with the face plate 3 remaining at its lower end.

The empty formwork is lifted by the hook of an automatic machine,
It is transported as it is and placed on another face plate 3 that has been arranged in advance on the transport line. Thereafter, the above-described operations are repeated.

On the other hand, the demolded concrete block is separated from the face plate 3 by human power or the like in the next step.

Therefore, the lid body 4 can be reliably opened and closed with an extremely simple operation of just moving the operating member 12 up and down, so unlike the case where the lid body 4 is opened and closed directly, it can be easily automated. .

Further, at this time, since the face plate 3 is held and released from the form body 1 in conjunction with the opening/closing operation of the lid body 4, the mold assembly work can be completely automated.

Furthermore, in the past, the opening operation of the lid 4 and the demolding operation had to be performed in separate steps, but in this embodiment, after lifting the operating member 12 upward and opening the lid 4, Furthermore, if the operating member 12 is lifted upward, demolding is also performed subsequently, so that it is possible to reduce the number of steps, and it is possible to significantly reduce costs by making the base of the line smaller.

Moreover, since the engagement recess 9 is not a complete hole but is composed of a notch 13 with one end open,
The interlocking member 7 can be easily pulled out from the engagement recess 9, and maintenance is easy. Further, by adjusting the fixing position of the stopper pin 14, dimensional errors during manufacturing can be absorbed, so there is no need to pay much attention to dimensional accuracy, and manufacturing is easy.

[Effects of the invention] As explained above, in the present invention, the lid is opened and closed by moving the operating member up and down, so it is not only easy to open the lid, but also to assemble the lid to close it. This can be performed reliably by an extremely simple operation of just moving the operating member up and down, and can be easily automated.

In addition, by holding and releasing the face plate for press mirror surface molding from the mold body using a holding mechanism that is linked to the opening and closing operations of the lid,
The face plate can be held and released by moving the operating member up and down, making automation easier.

[Brief explanation of the drawing]

Fig. 1 is a partially broken front view showing a concrete block formwork according to an embodiment of the present invention, Fig. 2 is a partially broken left side view of Fig. 1, and Fig. 3 is an enlarged left half of Fig. 1. FIG. 4 is a view corresponding to FIG. 3 showing a state in which the lid body is opened. 1... Form body, 1a... Hole, 1b... Upper end flange, 3... Face plate, 4... Lid, 6... Rotating shaft, 7... Interlocking member, 8a, 8b... Locking metal fittings,
9... Engagement recess, 12... Operation member, 13... Notch, 13a... Holding part, 13b... Guide part,
14... Stopper pin, 15... Swing shaft, 17...
...Futsuku arm, 17a...Futsuku.

Claims (1)

[Claims for Utility Model Registration] 1. A cylindrical formwork body forming the joint end of the block and the body of the block; a notch formed in the formwork body and corresponding to the notch to be provided on the side surface of the body of the block. a hole; a lid body whose lower end is pivotally connected to the formwork body and swings in and out directions to open and close the hole from the outside; an interlocking member horizontally fixed at a position near the top end of the lid body; a pair of locking metal fittings provided on both sides of the lid body on the upper part of the formwork body so as to be able to swing up and down; and a pair of locking metal fittings provided on both of the locking metal fittings to engage and lock both ends of the interlocking member, respectively. and an engagement recess for opening and closing the lid within a certain range by swinging of both the locking metal fittings; and an operating member disposed between the two locking metal fittings and connecting the two locking metal fittings; The engagement recess allows the lid to be opened to a position regulated by the engagement recess and the interlocking member by moving the operating member upward and swinging both of the locking fittings upward.
A formwork for a concrete block, characterized in that the lid body is closed and held in the closed position by lowering an operating member and swinging both locking fittings downward. 2 A face plate for press mirror finish molding that can be held by a holding mechanism linked to the opening/closing operation of the lid is arranged at the lower end of the form body, and the holding mechanism holds the face plate by the closing operation of the lid. 2. The formwork for a concrete block according to claim 1, wherein the formwork is fixed to the lower end of the formwork body, and the holding of the face plate is released by opening the lid.