JPH0259304A - Manufacturing device of concrete product - Google Patents

Abstract

PURPOSE:To improve productivity and make the cost of plant and equipment inexpensive, by a method wherein the title device is constituted of a plurality of working lines performing a preparatory operation and arranging in a row, a filling line filling concrete, a conveying line shifting into an inlet of a curing chamber and a carrying line returning to the working line. CONSTITUTION:When preparatory work is completed while conveying a concrete form 12, a truck 17 comes for concrete according to selection of placement, in a working line, to begin with. The truck 17 is moved to a loading part 14 of the concrete, the concrete forms 12 are conveyed forward intermittently one by one by reciprocating driving of an intermittent feed mechanism 24 after filling of the concrete, loaded on a roller part 33 on the alert with the next chain conveyor part 21 and conveyed to an inlet of a curing chamber R at a stretch. At the time when the concrete is cured with steam for a fixed period of time and reached to a place in the vicinity of an outlet, a truck 48 is on the alert at the outside of the curing chamber R and the concrete form 12 which has finished the curing is transferred automatically to either of the working lines 11. Therefore, when, for example, the concrete form 12 is kept sent out into the curing chamber R on the point of the end of work, all of the concrete forms 12 are cured and sent back to the working line 11 during night.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for manufacturing gutter covers, U-shaped gutters, and other concrete products.

(Prior Art and Problems to be Solved by the Invention) Conventional devices of this type include, for example, the following devices.

First, as shown in Figure 8, a large number of platforms equipped with formwork
In this method, jL1 is placed on rails 2 forming one closed loop and circulated. The curing chamber 3 is of a penetrating type having an inlet at one end and an outlet at the other end, and has the above-mentioned unit ratio 1.
When the molds are fed into the curing chamber 3 one by one, the platforms 1 carrying the cured formwork are pushed out one by one at the exit. The product is removed from the extruded formwork of the stand IjL1, and after the mold is assembled, the rotating stand I111 is returned to its original position. This method increases productivity by repeating this process continuously.

However, according to this method, as the length of the entire line becomes longer, the time required for one cart to go around the line increases, as a matter of course. Therefore,
For example, if there are 50 molds on a production line and only the products molded by molds No. 10 and 20 are required, productivity will be extremely low.

In other words, even if the required formwork is No. 10 and No. 20,
Concerning the remaining 48 formworks, either concrete is not poured into the formwork and the concrete is fed, or concrete is poured into the formwork that is originally required while also being poured into unnecessary formwork. As a result, time is lost due to empty feeding, or wasteful inventory is held.

Also, depending on the type of formwork, the time required from opening the mold to demolding and assembling the mold varies, and if all work is done on one line, the line will be set according to the formwork that takes the most time. This results in extremely low efficiency.

Furthermore, this type of curing chamber has a structure in which one cart is pushed out by putting one cart in it, so the next cart cannot advance one pitch unless it is filled with rice. Therefore, since the curing time is different, the quality of the products varies.

Therefore, in order to eliminate the defects of such a circulation system,
A batch method as shown in FIG. 9 has been proposed. In the figure, the curing chamber 4 has a plurality of curing tunnels 5 arranged in parallel, each having an entrance at one end and a closed end at the other end. Then, a line is formed in each curing tunnel 5 to make it independent and to produce it individually.

However, in this method, the stand l1 is placed inside the curing tunnel 5.
Since the curing method is performed by lowering the shutter after filling the container with No. 16 to the fullest, there is a drawback that it takes too much time to prepare or stand by for curing. That is, if 1
Assuming that molds can be put into the curing tunnel 5 in 5 minutes, the shutter cannot be lowered until about 75 minutes have elapsed in total for 15 molds. Therefore, the formwork put in first is 7
Curing cannot be started until 5 minutes have elapsed, which is extremely uneconomical, and the formwork inserted last must be placed in the curing room without pre-curing.

Moreover, according to this method, it is necessary to install a plurality of curing tunnels 5, and additional equipment such as table vibrators 7 must be installed in the same number as the number of curing tunnels 5, which increases the equipment cost. There was also a flaw.

This invention has been devised to eliminate the deficiencies of the prior art as described above. For this purpose, the rollers will selectively flow the necessary formwork from time to time, giving priority to it.
To provide a concrete product manufacturing device that can increase productivity by efficiently using formwork and has low equipment costs.

(Means for Solving the Problems) In order to achieve the above object, a concrete product manufacturing apparatus according to the present invention includes: (a) an inlet at one end and an outlet at the other end; A curing room equipped with a curing feed line that seamlessly transports the molded formwork (1)) A plurality of parallel work lines (e) that perform a series of preparatory operations for filling the formwork with concrete to be fed into the curing room. From any of these multiple work lines,
(d) A filling line which optionally receives the formwork after the preparatory work has been completed and transfers the formwork to a concrete charging station and fills it with concrete. (e) A carry-in line that sends the formwork to the entrance of the curing chamber while curing it; and a carry-out line that receives the formwork sent out from the outlet of the curing chamber and returns the formwork to any of the work lines mentioned above.

(Function) A series of preparatory work for filling the formwork with concrete, that is, opening the mold, demolding the product, and cleaning the formwork, on each work line installed in parallel or on a predetermined work line. , reinforcing, forming molds, and applying release material.

The formwork on which the preparatory work has been completed is optionally sent out from one of the plurality of work lines to a filling line for the next process. The sent-out formwork is transferred as it is to the concrete charging section, where it is filled with concrete. Thereafter, this mold is sent out from the filling line to the carry-in line, and is further transferred to the entrance of the curing chamber while being directly cured. The molds sent into the curing chamber are transported to the exit of the curing chamber without interruption by a curing feed line installed inside the chamber. Thereafter, this formwork is returned to one of the above-mentioned work lines via the carry-out line, and a series of preparatory operations for concrete filling are performed again in preparation for the next delivery.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the figure, reference numeral 11 denotes a work line in which a series of preparatory operations for filling with concrete are carried out, such as opening the formwork 12 while transporting it on rollers, demolding the product, cleaning, reinforcing, setting the form, and applying release material. , two or more are installed in parallel to form a work line group.

All of the work lines 11 may be in operation, or only a predetermined work line 11 may be in operation.

When operating only a predetermined work line 11, a line close to the alignment roller conveyor 13 for aligning demolded products is used. This is the alignment roller conveyor 1
3, the time required to transport the demolded product to the row 213 is short, and the preparation work can be completed more quickly. In order to demold the products and transport the demolded products to the alignment roller conveyor 13, an overhead crane (not shown) is installed that runs perpendicularly on each work line 11, and a special jig is attached to this crane. Let's do it.

In front of the work line group, any of the work line 1
1, the optionally selected formwork 12 is received after the preparatory work is completed, and the formwork 12 is transferred to the concrete charging section 14.
A filling line 15 is installed to transport the concrete to the container and fill it with concrete. That is, a rail 16 is laid along the front of each work line 11, and a cart 17 with a table vibrator runs on the rail 16. The trolley 17 is always on standby at a prescribed position, that is, in this embodiment, at a position facing the leftmost work line 11.
Depending on the manual operation of the molder, the machine can optionally travel to any of the work lines 11 and receive the formwork 12 after completion of preparation. And the received formwork 1
2 is transferred to the concrete charging section 14 and filled with concrete. In addition, 18 is installed on the trolley 17.
It is a L-n conveyor. The formwork 12 is received from the work line 11 via this conveyor 18, and the received formwork 12 can be delivered to a carry-in line 19, which will be described below.

The carry-in line 19 includes a roller conveyor section 20 located on the same line as the work line 11 located at the left end, with the filling line 15 in between.

20 and a linked chain conveyor section 21.

First, the roller conveyor section 20 will be explained.

This conveyor section 20 transports the formwork 12 filled with concrete to a curing chamber R to be described later. ! As clearly shown in FIGS. 2 and 3, this is a line for sequentially feeding the materials as they grow, and a driving roller conveyor 23 driven by a chain 22 is provided at the front end of the line.

Moreover, in the longitudinal direction of the central length, there is an intermittent feeder that intermittently feeds the formwork 12 forward. 1Iy24 is provided.

This W1 mechanism 24 that intermittent feeds the main body 2 that reciprocates back and forth.
5, and a pair of feed claws 26 attached to both sides of the main body 25 at several locations. The feed claw 26 is
As clearly shown in FIG. 4, it is rotatably mounted around a shaft S, and its base end 27 abuts against a rear stopper 28 fixed to the main body 25. Therefore, in the illustrated state, it cannot be rotated clockwise. −Also, regarding the counterclockwise direction,
It is regulated by a front stopper 29 which is also fixed to the main body 25.

Furthermore, since the center of gravity is located near the base end portion 27, even if the device is rotated counterclockwise, it can always automatically return to the state shown in the figure unless the device is rotated by more than a certain angle.

At a predetermined location on the line of this conveyor section 20,
A rod-shaped pie break 30 is placed suspended by an overhead crane (not shown). Rod-shaped vibrator 30
This is used to remove air bubbles from the filled concrete, to make the concrete dense, and to make the molding surface beautiful, especially when the mold 12 to be sent is for forming gutter covers.

Next, the chain-conveyor section 21 will be explained. This conveyor section 21 is connected to the terminal end of the roller conveyor section 20, receives the formwork 12 intermittently sent from the conveyor section 20, and changes the direction of movement of the formwork 12 by 90 degrees to form the curing chamber R. This is a line that transports everything all at once to the entrance. A plurality of roller parts 33 on which formworks 12 are mounted are connected to the endless chains 31 and 32, and are arranged so as to face the end of the conveyor 71S20 and the center of the entrance of the curing chamber R. Ru. 34 is a pusher that pushes the formwork 12, which has been conveyed to the entrance of the curing chamber R, into the curing chamber R.

Next, the curing room R is of a through type having an entrance at one end and an exit at the other end, and the entrance is provided with shutters 35 and 36 that automatically open and close in accordance with the loading and unloading of the formwork 12. There is. In this curing chamber R, a curing feed line 37 is provided, which includes, for example, a drive roller conveyor driven by a chain, for continuously transporting the sent formwork 12 without interruption. This curing feed line 37 is
The formwork 12 is slowly transported indoors at a constant speed, and is preferably cured for 2 hours. However, since it is necessary to shorten the curing time in the summer and to lengthen the curing time in the winter, the conveyance speed can be adjusted.

A lifting device 38 is attached to the starting end and the terminal end of this curing feed line 37, respectively, so that the formwork 12 can be quickly transferred at the entrance/exit of the curing chamber R.

That is, the lifting device 38 moves up and down using air as a driving source, and as shown in FIG. is supported. And each roller 41
6(a), as the lifting platform 39 moves up and down,
The formwork 12 is transferred by the lifting and lowering operation shown in FIG. That is, in FIG. 6(a), the original position of the roller 41 is shown by a solid line. It rises from this position to the position shown by the imaginary line, and is at the same level L as the 'a-la position of the roller section 33.
Reach 1. Here, the formwork 12 that is pushed by the pusher 34 and sent in all at once is received. When it is received, it starts descending, and as shown in the same figure (b), during the descent, it reaches the same level L as the roller position of line 37.
2, the formwork 12 is transferred to the same line 37.

Then it returns to its original position. The lifting device 38 provided at the end of the line 37 also transfers the formwork 12 in the same manner. That is, when the roller 41 reaches level L2 on the way up, the formwork 12 is received from the line 37 at α,
When you reach the ascending point and reach level L1, the shilling -4
With the push of step 2, the formwork IZ is moved into the curing chamber R5'1.
-Send it out. In this way, by interposing the lifting device 38 at the entrance/exit portion of the curing chamber R, even if the curing feed line advances slowly, the formwork 12 can be taken in and out quickly regardless of the speed. It can be carried out. For this reason, the shutter 35.36 in a short time
can be opened and closed, and it is possible to prevent the steam in the curing chamber R from leaking to the outside.

This curing chamber R uses steam heat as a means of curing concrete. That is, inside the curing chamber R, steam pipes are independently piped for each block assumed along the longitudinal direction. In this embodiment, the inside of the curing chamber R is assumed to consist of 8 blocks, and the remaining 6 blocks excluding the first and last two blocks are each equipped with a branch steam pipe 4.
3 is piped. Each block to which the steam pipe 43 is installed is provided with a temperature sensor 44 that detects the temperature within the block. Therefore, each steam tr
f43, when the temperature inside the block becomes below a predetermined temperature,
By the action of the sensor 44, the steam sent from the boiler 45 can be ejected independently. The indoor temperature of each block is centrally controlled remotely outside the curing room R. FIG. 7 shows an example of temperature management, where the vertical axis shows the temperature, and the horizontal axis shows each block from the entrance to the exit of the curing chamber R. In the figure, the temperature is set at 45°C for the third to sixth blocks, and the temperature is set at around 30°C for the second and seventh blocks. When the horizontal axis is viewed as the flow of time, the formwork 12 finely inserted into the curing chamber R is conveyed at a constant speed, and is initially cured at a low temperature, midway through high temperature curing, and finally This is an ideal curing pattern in which it is cured again at low temperatures.

In conventional through-type curing chambers, it was standard to install one steam pipe for curing, and also to install one temperature sensor for temperature control. Therefore, for example, if a temperature sensor is installed near the entrance/exit of a curing room, the temperature tends to drop near the entrance/exit, so steam may come out even if the target temperature is maintained in the middle. . Also, if a temperature sensor is installed in the middle, the temperature will be easily maintained, so even if the temperature near the entrance is lower than the set temperature, steam will not come out.

In this embodiment, as mentioned above, the steam pipes are installed independently and a temperature sensor is attached to each one to control the temperature, so steam can be released only in areas where the temperature has dropped to deal with the problem individually. is completely eliminated. Moreover, if one block experiences a temperature drop and releases steam, the temperature of the adjacent block will also rise due to this steam. Therefore, even if the adjacent block is about to emit steam due to a temperature drop, it is possible to prevent excess steam from being emitted due to the temperature rise. Therefore, the consumption of fuel such as heavy oil can be suppressed as much as possible, and the economic effect is great.

Note that this independent piping system is not limited to the type of curing chamber shown in the example, that is, a curing chamber that has an inlet at one end and an outlet at the other end. It is clear that it can also be used in closed curing rooms.

On the exit side of the curing chamber R, there is a formwork 1 sent out from the same exit.
2, and the direction of movement of the formwork 12 is adjusted to 90°.
A derivation line 46 is installed to change the data and return it to one of the work lines 11. That is, a rail 47 is laid along the back of each work line 11 from the exit of the curing chamber R, and a cart 48 runs on the rail 47. The stand 4148 automatically travels according to a predetermined procedure and receives the cured formwork 12 from the cure room R.
It is transported to each work line 11 according to the above procedure. However, by arbitrarily changing the above-mentioned procedure, it is possible to always repeatedly transport the material to a specific work line 11, or it is also possible to alternately repeat the transport to a plurality of work lines 11. . In addition, 49 is formwork 1
2 is a roller unit that transfers, 50 is a received formwork 12
It is a pusher that provides support to carry out the work.

Now, in order to manufacture concrete products using the manufacturing apparatus having the above configuration, first, in the work line 11,
While transporting the formwork 12, a series of preparatory work for concrete filling is performed. At this time, personnel may be assigned to all the work lines 11 to proceed with the work in parallel, or personnel may be assigned only to a specific line to proceed with the work.

Once the preparatory work is completed in any work line,
Depending on how you choose to bat, you will receive a base of $17.

When the formwork 12 is pushed out, the chain conveyor 1 of the trolley 17
8 starts driving and receives the formwork 12. When the receiving is completed, the drive of the conveyor 18 is stopped and the machine J
tL17 moves to the concrete charging section 14.

The table vibrator starts vibrating and the concrete fills up.
be done. After filling, the trolley 18 returns to its normal position.

Thereupon, the chain conveyor 18 is driven again and the feeding of the formwork 12 is started. At the same time, the drive roller conveyor 23 is also driven to receive the mold 12 and feed it directly to the intermittent feed mechanism 24 side.

The main body 25 of the rock structure 24 is driven straight after confirming that the formwork 12 passes over the feeding claw 26 located at the most extreme end.

Therefore, the formwork 12 is pushed back by the feeding claws 26 that have crossed over, and is transported forward by one pitch.

Immediately after that, the main body 25 retreats and returns to its original position in preparation for the next feeding. The trolley 18 also optionally receives the next formwork 1 from either work line 11.
Waiting for 2.

In this way, the formwork 12 that is sent one after another by the cart 18 is automatically and intermittently conveyed forward one by one by the reciprocating drive of the intermittent feed mechanism 24. However, on line 2 of conveyor ff1S24, rod-shaped vibrator 3
When using 0, it is necessary to switch the intermittent feed to manual operation because it takes time to excite. The molds 12 transported one by one in this manner are mounted on the waiting roller section 33 at the next chain conveyor section 21 and transported all at once to the entrance of the curing chamber R. When this transportation is confirmed, the elevating device 38 in the curing chamber R is driven and the shutter 35 is opened. Formwork 12 is pusher 3
4's push sends him into the curing room R. The sent formwork 12 is received by the waiting lifting device 38, and is transferred to the curing feed line 37 as it is lowered. The formwork 12 is transported indoors by a curing feed line 37 and is cured with steam for a predetermined period of time. When you reach the exit, lift device 3 on the exit side
8 is driven and removed from the fin 37, and when the shutter 36 opens, it is sent out to the outside of the curing room R by the backing of the sill 42.

A trolley 48 is waiting outside the curing room R, receives the cured formwork 12, and automatically transfers the received formwork 12 to one of the work lines 1 according to a predetermined procedure.
Transfer to 1. When the trolley 48 reaches the work line 11, the pusher 50 operates to push the formwork 12,
Send it to work line 11. It is up to the same formwork 127 whether or not to immediately open the sent formwork 12 and begin preparations for the next concrete filling. It depends on whether or not it is needed. 6. If the mold is not needed, it will be left as is for a while. 6. If the mold is more needed, the egg product will be removed from the mold. Product demolding is performed using a special jig suspended by an overhead crane, and the products are transported as they are to the alignment roller conveyor 13. After that, a series of preparatory work including cleaning the formwork, reinforcing reinforcing, mold assembly, and peeling coating is carried out in preparation for the next priority feed.

In addition, according to the apparatus shown in this embodiment, once the formwork 12 is sent to the curing room R, it is automatically curing and conveyed, and is then transferred to any of the work lines 11 according to a predetermined procedure. It will be returned. Therefore, for example, if the formwork 12 is sent to the curing room R just before the end of the workday, all the formwork 12 will be cured and returned to the work line 11 during the night. For this reason, it is possible to start filling the concrete first thing the next morning, and the work efficiency is extremely good. The process begins with kneading raw dung,
By sending in one formwork filled with concrete, the work of demolding can be done.

Further, even with the conventional apparatus shown in FIG. 9, demolding work cannot be started unless the shutter is first opened and the mold is removed from inside.

(Effects of the Invention) The present invention has the configuration described above, and has the following effects.

1) By providing multiple work lines, specific formwork can be sent out for pouring concrete and curing, giving priority to other formwork. Therefore, it is possible to efficiently move a specific formwork to produce the required product in the required amount. In addition, even if there is a difference in the time required to assemble the formwork depending on the type of formwork, each type of formwork can be prepared on a separate work line, so the formwork can be assembled regardless of the order in which it is returned to the work line. Completed formwork can be sent out in order. Therefore, formwork that can be assembled in a short time can be sent to the molding company over formwork that requires a long time.
As a result, the waiting time for batting is shortened, and production efficiency can be improved.

2) The formwork sent into the curing room is transported without interruption regardless of whether subsequent formwork is sent in or not, so the curing time for each formwork is always constant and the quality of the product is consistent. can be obtained. Moreover, since the curing chamber is of a penetrating type, the concrete can be brought in immediately after pre-curing time after being poured, and there is no need to waste time waiting for curing.

3) Even if there are multiple work lines, curing rooms, etc.
Since it can be used for both purposes and only one is needed, the equipment cost F can be kept low.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a schematic configuration of a concrete product manufacturing apparatus according to the present invention, FIGS. 2 and 3 are a plan view and a side view of the roller conveyor section of the apparatus, and FIG. 4 is a plan view of the roller conveyor section of the apparatus. Figure 5 is an enlarged view of the feed claw of the intermittent feed mechanism attached to the curing chamber, Figure 5 is a side view illustrating the operation of the lifting device attached to the curing feed line in the curing chamber, and Figure #6 (
a), (+)) are diagrams explaining the delivery of the formwork by the lifting device, and Figure 7 shows the temperature Ir! in the curing chamber. FIGS. 8 and 9 are diagrams illustrating a conventional concrete product manufacturing apparatus. 11...Work line 15...Filling line 1
9... Loading line 37... Curing feed line 46... Carrying out line R... Curing room Patent applicant Matsuoka Concrete Industry Co., Ltd. Agent
Patent Attorney Hikaru Hirose

Claims (1)

[Scope of Claims] 1) A curing chamber with an inlet at one end and an outlet at the other end, and a curing feed line that continuously transports the formwork fed into the room, and the formwork fed into the curing chamber. A plurality of parallel work lines perform a series of preparatory work for filling with concrete, and a formwork after the preparatory work is received from any one of the plurality of work lines, and the same formwork is a filling line that transfers the concrete to the concrete input section and fills it with concrete; a carry-in line that receives the formwork sent out from this filling line and sends it to the entrance of the curing chamber while pre-curing it; and a line that transports the formwork from the curing chamber exit. A concrete product manufacturing device comprising a carry-out line that receives formwork sent out and returns the formwork to any of the work lines mentioned above.