JPH01182008A - Release agent applying device for concrete frame - Google Patents

Abstract

PURPOSE:To lessen the scattering of release agent mist in a plant and improve the working environment by lifting and lowering an enclosure frame installed on a track of a transfer car, tentatively blocking the surroundings of the transfer car, adjusting automatically the position of a jetting opening of the release agent to correspond with the kind of the frame on the transfer car and applying the release agent to the frame. CONSTITUTION:A frame placed on a transfer car is disposed in the central section of the position in which a spraying device for a release agent is set by a rail 3 and a conveyor. A lifting enclosure frame 5 for spraying device frames 4 in the front and rear direction of a track is lowered, and the four sides of the frame on the transfer car is covered with the enclosure frame by the fixed enclosure frame 5 mounted on the spraying device frames 4 on both sides of the travel rail 3. The kind of the frame on the transfer car is identified by a frame identification device, and a feeding pipe 11 having a jetting opening 12 for applying the release agent at its end is set in the position for inserting the frame in accordance with the frame width and the size, which is lowered through a sleeve of a holder 15 when the same comes close to the bottom surface of the frame, a traveling transfer bed starts to move, and the release agent is applied by the jetting opening 12 and a nozzle 26 branched from an auto-gun 25.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an apparatus for applying a release agent to formwork for manufacturing concrete products.

<Prior art> When applying a release agent from the injection port to the concrete formwork after cleaning the formwork, the opening of the formwork is covered from the top with a temporary cover. A release agent is applied to the inner surface of the mold by penetrating the lid and providing an injection port from the tip or periphery of the lid.

Such a device was proposed and put into practical use in Japanese Patent Publication No. 53-24203 filed by the present applicant.

<Problems to be solved by the invention> With the diversification of concrete products, concrete casting, curing, demolding, cleaning, mold setting, application of release agent, and reinforcing bar insertion by placing the formwork on a trolley have become increasingly common. In mass production factories, where each process is performed continuously, the number of products that differ in type and shape is increasing, in addition to the existing products.

As a result, the thickness and shape of the formwork become complicated, and if you temporarily cover the opening of the formwork and apply a release agent to the inner surface of the formwork from the injection port, the size and shape will not be uniform, so depending on the formwork, There may be areas where the release agent is not coated, and it may adhere to the inner surface during demolding, making demolding time-consuming and reducing production efficiency, or this may cause damage to the product, or conversely, excessive amounts of release agent may be applied. Problems have arisen in that concrete products accumulate on the bottom surface when they vibrate, resulting in darkening of concrete products and a significant loss of commercial value.

When such a wide variety of products are continuously manufactured on the same line, it becomes difficult to standardize the number and angle of injection ports, creating a serious problem in terms of quality control.

Furthermore, large products and molds with complex shapes require a large amount of release agent to be applied, which causes mist to fill the factory and cause pollution due to release agent application, which is often pointed out in terms of hygiene management.

<Means to Solve the Problem> Therefore, the present invention covers the surroundings of the formworks placed on a movable cart and sent one after another with a frame, and the formwork inside the frame is read and identified by a formwork identification device. The application position, such as the height and width of the release agent injection port, is automatically adjusted in advance according to the type of frame, and the injection port and nozzle are moved according to the formwork, making it efficient with a small amount of release agent. This is done by applying a suitable coating.

Furthermore, when applying the release agent, the movable cart on which the formwork is placed is surrounded by a frame, which prevents mist from scattering.

<Function> The enclosure frame installed on the running path of the movable dolly on which the formwork is mounted is raised and lowered to temporarily seal the area around the movable dolly, and the formwork is placed on the movable dolly that is stopped within the enclosure frame according to the type of formwork. The release agent is applied to the mold by automatically adjusting the position of the injection port for the release agent to be applied to the inner surface of the mold.

<Example> Figures 1 and 2 are a front view and a side view of the device of the present invention.
The figure is a front view showing the movement of the feed pipe and the lifting/lowering situation of the lifter, and Figure 4 is a plan view showing the running situation of the traveling platform to which the feed pipe is attached. 5 and 7 are a lifting enclosure frame and a fixed enclosure frame.

9. 13 is a lifter and a traveling platform to which a feed pipe halter is attached, 34 is a motor for movement, 12 is an injection port attached to the tip of the feed pipe, and 26 is a pipe from an auto gun 25. This is the nozzle.

Reference numerals 27 and 28 are obit motors that move the left and right feed pipe holters.

Next, the present invention will be explained based on the illustrated embodiments.

First, as shown in Fig. 1, the formwork is loaded onto a moving trolley, the inner surface of the formwork has been cleaned, and the formwork moves on the running rail 3 until it comes to the position where the release agent spraying device A is installed. When the trolley transfers from the running rail 3 to the conveyor 8 and stops at the center, the elevating enclosure frame 5 installed on the spray device frame 4 in the longitudinal direction of the track descends and is fixed to the spray device frames 4 on both sides of the running rail 3. Since the enclosing frame 7 is attached, the formwork on the movable trolley is covered on all sides with the enclosing frame.

Next, since the type of formwork placed on the movable cart has already been determined in the previous process, the left and right feed pipe holder, which has an injection port 12 at its lower end for applying a release agent to the bottom of the formwork, is installed. The upper and lower left and right screws 19 and 20 on which the screws 15 are pivoted are differentially moved to move and set the feed pipe 11 to the insertion position of the mold according to the width and size of the mold.

Then, at the same time as the movable trolley 1 stops at the center, the lifting motor 14 is activated differentially, and the movable rail 31, which is suspended by the chain 17 via the tin rockets 16 on both sides, descends, and the wheels 32 are pivoted. The traveling movable table 13 also lowers together and stops at a predetermined position. Next, the left and right feed pipe holters 15 are attached, and the cylinder 10 of the seven-wheeler 9 is moved differentially to a! The feed pipe, which is positioned according to the width of the formwork, descends through the sleeve of the holster 15, and when it approaches the bottom of the formwork, it is attached to both ends of the traveling carriage 13, as shown in Fig. 4. When the wheels 32 start moving along the longitudinal direction of the formwork by the two-dress chain 29 due to the rotation of the hydraulic motor 34, the release agent is released from the nozzle 26 which is branched from the injection port 12 and the auto can 25. applied.

In this case, since the injection port sprays near the bottom of the mold, it is possible to sufficiently coat the inner surface of the mold even at low pressure.

Also, a release agent adjusted to a constant pressure using an Autoga/25 is applied to the sides and core of the formwork so as not to create blind spots.

After applying the release agent in this way, raise the injection port or nozzle, and if the formwork is placed in parallel, move the feed pipe to the center of the adjacent formwork and perform the application work. If there is only one formwork, the lifting enclosure is opened and the movable trolley l is sent to the next process, and when the next moving carriage arrives, the lifting enclosure is lowered to cover the surrounding area and the above-mentioned coating operation is repeated.

The coating device of the present invention efficiently applies only the minimum amount of release agent to the inner surface of the formwork at low pressure, so the amount of discharge per hour is small, and the release agent applied to the vertical surface can also be applied to the formwork with the application pressure. Since the release agent rarely flows out to the bottom part 2 of the holder, the release agent does not accumulate at the bottom part.

Although one embodiment of the release agent coating device of the present invention has been described above,
In the present invention, it is not necessary to use only one formwork, but for short products, two formworks may be arranged in a linear direction. Since the position of the injection port 12 and nozzle 26 is moved to approach the inner surface or bottom of the formwork and apply the release agent efficiently, the amount of release agent consumed can be significantly reduced.

In addition, in order to prevent the mist from scattering into the factory when applying the release agent to the formwork, the surrounding area is covered with an enclosure frame, and a dust collector (not shown) attached to the top of the frame is used to directly apply the release agent to the building cliff. By exhausting the air outside, the air inside the factory can be kept clean.

<Effects of the Invention> According to the present invention, the discharge openings of the release agent are brought close to each other in accordance with the shape of the formwork, and the application is performed at low pressure, so that the amount of release agent consumed per hour can be reduced, so that the amount of consumption can be reduced.

Furthermore, since the coating work is carried out with the surrounding frame surrounding the coating device, scattering of release agent mist within the factory is extremely reduced, the working environment is improved, and a significant effect on hygiene management can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a partially cross-sectional front view showing one embodiment of the present invention, Fig. 2 is a partially cross-sectional side view, and Fig. 3 is a front view showing movement of the feed pipe and lifting/lowering conditions of the lifter. Fig. 4 is a plan view showing the traveling condition of the traveling movable platform. ○A... Release agent spray device, 6... Lifting cylinder, 9... Lifter, 12...Injection port, 18...Elevating kite, 21.22...
...Threaded bearing, 23...Feed pipe mounting bracket, 24...Auto gun mounting member, 3o...
...Sprocket, 33...Sleeve.

Claims (3)

[Claims] (1) Temporarily seal the formwork by covering it with an enclosing frame installed on the travel path of the mobile cart carrying the formwork, and move the formwork along the length of the formwork above the temporarily sealed formwork. The device is equipped with a release agent injection port to apply the release agent while the mobile cart is stopped, and when the application is finished, the temporarily closed elevating enclosure is raised to allow the mobile cart to move intermittently. A device for applying release agent to concrete formwork. (2) In the release agent applicator according to claim 1, the type of formwork that is sequentially sent is determined, and the height of the spraying position and the inner surface of the formwork are determined according to a pre-installed program. A device for applying a release agent to concrete formwork, which is equipped with a function that automatically adjusts the spray distance and applies the agent. (3) In the release agent applicator according to claims 1 and 2, the concrete type is characterized in that the enclosing frame is raised and lowered only in the front and rear directions of the running path to temporarily seal it. A device for applying release agent to the frame.