JPH056085Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a molding form for a concrete gutter cover, in particular, a molding form for a concrete gutter cover, which is equipped with a soundproofing buffer member on the bottom part, or on the sides as well as the bottom part. Regarding.

(Prior Art) In Japanese Patent Application No. 62-82509, the present applicant proposed a method for pouring concrete into the formwork in the thickness direction of the gutter cover, in contrast to the conventional method of pouring concrete into the gutter cover in the thickness direction of the gutter cover. We proposed vertical and horizontal methods of striking in the length and width directions. In particular, regarding the latter, the following structure was suggested for the formwork used in this method. That is, at both upper and lower ends of the partition molding plate of each molding frame, mounting means for mounting the soundproofing buffer member are formed, which extend in the lateral direction, that is, in the direction orthogonal to the direction in which concrete is poured. Moreover, attachment means to which the buffer member can be attached and fixed is also formed on either one of the side molded plates.

By the way, as a specific structure of the attachment means formed on the partition molded plate, the structural example shown in FIG. 6 of the accompanying drawings of the above application can be applied as is. That is, recesses extending in a direction perpendicular to the direction of concrete injection are formed at both the upper and lower ends of the partition molded plate. Tapered protrusions are formed in these recesses to fit into grooves with a tapered cross-section recess provided in the buffer member, and by this fitting, the member can be attached and fixed to the molded plate. Do it like this.

(Problems to be solved by the invention) However, this mounting structure has the following problems. Since the concave portion of the buffer member and the protrusion that fits therein are strongly connected like a dovetail joint, the member is difficult to separate from the partition molding plate when demolding the product. On the other hand, it is standard practice to demold the product one to two days after pouring the concrete. Therefore, since the mold is opened at a time when the concrete strength of the product is not yet sufficient, the product is demolded while the buffer member remains fixed to the molding plate, in other words, the product is removed from the mold.

In view of the above-mentioned problems, this idea was developed for a concrete gutter cover in which the buffer member can be easily removed from the partition molding plate when the mold is opened after pouring concrete, and can be removed from the mold while attached to the product side. The purpose is to provide molding forms.

(Means for Solving the Problems) The molding form for concrete gutter covers according to this invention has the following configuration in order to achieve the above object. That is, this molding frame includes a large number of molding frames that move and open the molds so as to widen the mutual spacing. These molding frames include a movable bottom molding plate, left and right side molding plates that stand rotatably supported on both sides of the bottom molding plate, and are fixed to the bottom molding plate and are connected between each molding chamber. It consists of a partition molded plate that stands as if to partition the area. The upper and lower parts of the outer surface of the partition molded plate have a width in which a soundproofing shock absorbing member having a retaining protrusion buried in the concrete is fitted on the back surface, and a depth that is shorter than the thickness thereof. forming a mounting recess. Moreover, it is a mounting recess extending in a direction perpendicular to the direction in which concrete is poured. Then, an engagement protrusion including a tapered protrusion and a non-taper protrusion is formed in these attachment recesses to fit into an engagement groove having a tapered concave cross section provided on the surface of the buffer member. It is characterized by

In addition, the structure is configured as follows so that a soundproof buffer member can be attached to the side surface of the gutter cover. That is, the upper and lower inner surfaces of one of the side molded plates are formed with mounting recesses having a width into which the soundproofing cushioning member is fitted and a depth shorter than the thickness thereof. In these mounting recesses, an engaging protrusion is fitted into an engagement groove having a tapered cross-sectional concave shape provided on the surface of the buffer member, and the entire or part of the engagement groove is a non-tapered protrusion. form.

(Function) First, each molding frame is moved so as to widen the mutual interval, and the left and right side molding plates are also opened to open the mold. Next, a soundproof buffer member is inserted from either the left or right direction into the mounting recesses formed in the upper and lower outer surfaces of each partition molded plate. At this time, an engagement groove having a tapered cross-sectional concave shape formed on the surface of the buffer member is fitted into an engagement protrusion formed in the attachment concave portion, and the buffer member is inserted so as to be slid therein. Further, when an attachment recess is formed in either one of the side molded plates, the buffer member is fitted in the same manner as described above and is attached by being pushed deep into the recess.

When the attachment of the buffer member is completed, the left and right side molding plates are closed and each molding frame is tightened to form a molding chamber. The reinforcing bars are placed inside this molding chamber, and concrete is poured from above. The poured concrete is filled so as to bury a portion of the main body of the buffer member and the retaining ridges provided on the back surface thereof. Once the concrete has hardened and the product has been formed, the mold is opened. When the mold is opened, each molded product moves away from one of the partition molding plates as the bottom molding plate moves. Due to this movement, the buffer member is removed from the partition molded plate.
A portion of the engagement protrusion formed in the attachment recess of the partition molded plate is a non-tapered protrusion. Therefore, the mutual fit with the engagement groove provided in the buffer member becomes weak as a whole, and the member easily comes off from the partition molding plate during demolding. Thereafter, open the left and right side forming plates and lift the product upward to take out the product, that is, the concrete gutter cover.

(Example) Hereinafter, an example of this invention will be described based on the drawings. The molding form shown in the figure is driven by screws, clamps, etc. to tighten each molding frame during concrete pouring, and after molding is completed, it is pulled apart to open the mold, making it possible to demold a large number of molded products at the same time. That is, on the base 1 are the left and right rails 2.
A large number of molding frames 3 are mounted on the rail 2 and are moved by screws or clamps to widen the distance between them to open the molds.

Each forming frame 3 is formed in a series so as to be stacked in large numbers in the longitudinal direction of the frame so that the surface and bottom parts of the gutter cover to be formed can be vertically formed. These molding frames 3 include a bottom molding plate 4 that moves on the rail 2, left and right side molding plates 6 that stand rotatably supported by shaft supports 5 on both sides of the bottom molding plate 4, 7, and a partition molding plate 8 that is fixed to the molding plate 4 and stands so as to partition the molding chambers from each other.
It consists of

First, the bottom molding plate 4 and the partition molding plate 8 will be described. The former molds one side surface of the gutter lid, and the latter molds the surface and bottom portions of the gutter lid. That is, the latter partition molding plate 8 serves as one partition plate of the molding chamber formed by the molding frame 3 and also serves as the other partition of the molding chamber formed by the other adjacent molding frame 3. It's also a board. Therefore, the partition molding plate 8 functions as a molding plate for molding the surface portion of the gutter cover on the inner surface side, and as a molding plate for molding the bottom surface portion on the outer surface side. In order to make the surface of the gutter cover smooth,
The inner surface of the molded plate 8 is a smooth surface. Further, the outer surface thereof has an uneven mounting surface so that a soundproof buffer member 9 fixed to the bottom surface of the gutter cover can be attached and fixed.

The buffer member 9 is usually called a packing made of soft rubber, soft synthetic resin, etc.
As clearly shown in FIG. 5, the longitudinal direction of the back surface is provided with a plurality of retaining protrusions W for preventing peeling, which have a tapered cross section that becomes wider toward the tip. Also,
The surface portion thereof is provided with a plurality of engagement grooves 10 which similarly extend in the longitudinal direction and have a tapered concave cross section that narrows toward the entrance.

On the other hand, at the upper and lower parts of the outer surface of the molded plate 8, soundproofing material is provided which extends horizontally, that is, in a direction perpendicular to the concrete pouring direction, in a band shape between the vertical recesses 11 on both sides. A mounting recess 12 for mounting the buffer member 9 is formed.
Both mounting recesses 12 have a width that allows the buffer member 9 to be sandwiched therebetween, and a depth that is shorter than the thickness thereof. The engagement grooves 10 of the buffer member 9 are fitted into these recesses 12 . Multiple engagement protrusions 13 including tapered protrusions and non-taper protrusions
is formed. That is, in this embodiment, two protrusions 13 are formed in the mounting recess 12, and the protrusions 13 have tapered protrusions that have a tapered cross-section and become wider as the tip ends are located alternately. It consists of a non-tapered protrusion with an angular cross section. However, the number of protrusions 13 is not limited to two, and may be two, for example. Further, the shape of the non-tapered protrusion is not limited to an angular cross section. For example, it may be a non-tapered protrusion portion in which one side surface is a vertical surface and the other side surface is a sloped surface. Furthermore, there is no particular limitation on how the tapered protrusions and non-taper protrusions are mixedly arranged.

The reason why the engagement protrusion 13 is composed of a tapered protrusion portion and a non-taper protrusion portion is as follows. That is, if the entire protrusion 13 is made up of only the tapered protrusion, the fit with the engagement groove 10 provided in the buffer member 9 will be a complete dovetail joint, which will cause problems when demolding the product. The member 9 is difficult to come off from the partition molded plate 8. Therefore, if part of the protrusion 13 is made into a non-tapered protrusion,
The mutual fit is weakened as a whole, and the member 9 can be easily removed from the partition molding plate 8 during demolding. However, if the proportion occupied by the non-tapered protrusions increases, a problem arises in that the attachment and fixing of the partition molded plate 8 becomes difficult.

Next, the left and right side forming plates 6 and 7 are rotatably supported by the shaft support 5 as described above, and when opened, they open wide to the left and right as shown in FIG. Then, a buffer member 9 is attached and fixed to one of the molded plates 7, that is, the molded plate 7 that forms the side part of the gutter cover with a drainage notch, in the same manner as the partition molded plate 8. , two mounting recesses 1
4 is formed. That is, like the recess 12 described above, the mounting recess 14 has a width into which the buffer member 9 is fitted and a depth shorter than its thickness, and is located at the upper and lower inner surfaces of the molded plate 7. , is formed so as to occupy the vicinity of one corner thereof in a rectangular shape. In the recess 14, a plurality of engagement protrusions 15 are fitted into the engagement grooves 10 of the buffer member 9.
is formed. However, all or part of the protrusion 15 is a non-tapered protrusion so that the buffer member 9 can be easily removed from the molding plate 7 during demolding. In this embodiment, two protrusions 15 are formed within the mounting recess 14, and the entirety thereof is a non-tapered protrusion. That is, the two protrusions 15 are as clearly shown in FIGS. 8 to 10.
The opposing inner surfaces are both vertical surfaces, and
The outer surface also consists of a non-tapered protrusion portion, with the central portion being a vertical surface and only the front and rear ends being sloped surfaces.

However, the shape of the protruding ridge 15 is not limited to the shape shown in the embodiment, and for example, in order to slightly strengthen the attachment and fixation of the buffer member 9, the shape of the protruding ridge 15 may be partially combined with tapered ridges. It may also be a shape. Further, the number of protrusions 15 is not limited to two, but may be three.

Next, a method of forming a concrete gutter cover using the forming form according to this invention will be explained.

First, each molding frame 3 is moved to widen the mutual spacing by screw driving or clamp driving, and the left and right side molding plates 6 and 7 are also opened to open the mold. Next, in order to prevent concrete from adhering, each molding frame 3 is coated with oil for preventing adhesion. Then, a soundproofing buffer member 9 is attached in advance to the mounting recesses 12 and 14 of the partition molded plate 8 and the side molded plate 7. When attaching the buffer member 9, the front side of the buffer member 9 is attached to the molded plate 7,
8, and attach it so that it hits the protrusion W that prevents it from coming out.
is made to protrude into the molding chamber formed by the molding frame 3.

The specific method of attachment is as follows. First, the buffer member 9 is inserted into the upper and lower mounting recesses 12 formed on the outer surface of the partition molded plate 8 from either the left or right direction. At this time, an engagement groove 10 having a concave tapered cross section formed on the surface of the buffer member 9
is fitted into the engaging protrusion 13 formed in the mounting recess 12, and inserted as it is by sliding it. Further, the buffer member 9 is fitted into the upper and lower mounting recesses 14 formed in one of the side molded plates 7 in the same manner as described above, and is attached by being pushed deep into the recess 14.

When the attachment of the buffer member 9 is completed, the left and right side molding plates 6 and 7 are closed, and each molding frame 3 is tightened to form a molding chamber. Then, the reinforcing bars are placed inside this molding chamber, and concrete is poured from above. The poured concrete is filled so as to bury a portion of the main body of the buffer member 9 and the retaining protrusions W provided on the back surface thereof. After that, the poured concrete is compacted using a vibrator or the like.
After curing and hardening for a predetermined period of time, the mold is opened. When the mold is opened, each molded product moves away from one of the partition molding plates 8 forming the molding chamber along with the movement of the bottom molding plate 4. Due to this movement, the buffer member 9 is removed from the partition molded plate 8.
Next, the left and right side molding plates 6 and 7 are opened. The buffer member 9 is removed from the molded plate 7. Remove the product by lifting it upwards. demolded products, i.e.
The concrete gutter cover C is as shown in FIG. 11, and is integrally provided with buffer members 9 on both sides of the bottom surface and at both upper corners of the side surface in which drainage notches are formed.

(Effects of the invention) The molding frame according to this invention has the above-mentioned configuration, and has the following effects.

1. In the forming form according to claim 1, an attachment recess extending in a direction perpendicular to the direction of concrete injection is formed on the outer surface of the partition forming plate, and a tapered protrusion and a non-taper protrusion are provided in the recess. An engaging protrusion was formed. Therefore, the engagement groove of the buffer member fixedly attached to the recess does not form a perfect dovetail joint, and the mutual fit becomes weak as a whole. Thus, when demolding the product, the buffer member can be easily removed from the fixed partition forming plate, and a concrete gutter cover having the buffer member on the bottom surface can be reliably obtained.

2. In the molding frame of claim 2, not only the partition molding plate but also one of the side molding plates is provided with a mounting recess and a protrusion for attaching the buffer member, and furthermore, this protrusion extends over the entire part of the molding plate. Alternatively, a portion thereof may consist of a non-tapered protrusion. Therefore, the buffering member attached and fixed to the side molded plate can be easily removed during demolding of the product, and it is possible to surely obtain a concrete gutter cover that is provided with the same buffering member not only at the bottom but also at the side surface. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the molding frame formed in the molding frame according to this invention, FIG. 2 is a front view of the molding frame with the left and right side molding plates opened, and FIG. Fig. 4 is an enlarged sectional view of the mounting recess formed in the partition molded plate, Fig. 5 is a perspective view of the soundproofing buffer member installed and fixed in the recess, and Fig. 6 is the side molding. Top view of the board, No. 7
The figure is an enlarged plan view of the mounting recess formed in the side molded plate, and Figures 8 to 10 are B in Figure 7.
-B sectional view, C-C sectional view and D-D sectional view,
FIG. 11 is a perspective view of the demolded concrete gutter cover. 3... Molding frame, 4... Bottom forming plate, 6, 7...
Side molded plate, 8...Partition molded plate, 9...Soundproofing buffer member, 10...Soundproofing buffer member engagement groove, W...
...Soundproofing buffer member retaining protrusion, 12, 14...
Attachment recess, 13, 15... Engagement protrusion.

Claims (1)

[Claims for Utility Model Registration] 1. It is equipped with a number of molding frames that move to open the molds so as to widen the distance between them, and these molding frames are connected to a movable bottom molding plate and the bottom molding plate. In a molding frame comprising left and right side molding plates rotatably supported on both sides, and a partition molding plate fixed to the bottom molding plate and standing so as to partition each molding chamber from each other, The soundproofing cushioning member, which has a retaining protrusion buried in the concrete on the upper and lower sides of the outer surface of the partition molded plate on the back side, has a width that fits easily, and a depth that is shorter than the thickness of the soundproofing cushioning member. Furthermore, mounting recesses are formed that extend in a direction perpendicular to the direction of concrete injection, and tapered protrusions are provided in these mounting recesses to fit into engagement grooves having a tapered cross-sectional recess shape provided on the surface of the buffer member. A molding form for a concrete gutter cover, characterized by forming an engaging protrusion consisting of a strip and a non-tapered protrusion. 2 Attachment recesses are formed in the upper and lower inner surfaces of either one of the side molded plates, and have a width in which the soundproofing cushioning member is fitted and a depth that is shorter than the thickness thereof; An engagement protrusion is formed in the attachment recess, which fits into an engagement groove having a tapered cross-sectional concave shape provided on the surface of the buffer member, and the entire or part of the engagement groove is a non-tapered protrusion. The molding form for a concrete gutter cover according to claim 1, characterized in that: