JP3108299U - Formwork and formwork device - Google Patents

Abstract

[PROBLEMS] To easily and reliably attach and detach a joint accessory member to the inner surface of a vertical wall plate of a peripheral frame, and to form joint portions of various shapes, to enhance the versatility of the peripheral frame, and to provide a bolt hole in the bottom plate Provided is a formwork apparatus that can fix a peripheral frame easily and reliably without being drilled, and can easily change the arrangement of the peripheral frame in accordance with a change in the size and shape of a concrete molded product.
A formwork apparatus includes a base plate 2 made of a steel plate, a form frame 3 having a plurality of steel plate peripheral frames 4 that are detachably fixed to a bed surface 2a of the base plate 2, and a plurality of peripherals on the base plate 2. A plurality of fixing jigs 5 for fixing the frame 4 so as to be unlocked are provided, and at least one peripheral frame 4 is detachably provided on the vertical wall inner surface 10a of the vertical wall plate 10 and is at least one end surface of the concrete wall block. Are provided with one or a plurality of joint attachment members 30 capable of forming a predetermined joint portion, and a magnet 31 attached to the joint attachment member 30 for attachment to the vertical wall plate 10.
[Selection] Figure 7

Description

  The present invention provides a mold having a plurality of peripheral frames removably fixed to a bed surface of a bottom plate made of a steel plate, and a plurality of fixing jigs for fixing at least one peripheral frame to the bottom plate so as to be unlocked. It is related with the formwork apparatus provided with.

  Conventionally, when forming a concrete wall of a building at a construction site, first, a plurality of concrete wall blocks are manufactured in a concrete manufacturing factory, and these concrete wall blocks are transported to the building site, and a plurality of concrete wall blocks are assembled and adjacent to each other. A method of joining the end faces of two concrete wall blocks is widely adopted. In a concrete manufacturing plant, usually, a plurality of peripheral frames are arranged and fixed on a bed surface of a steel plate bottom plate so as to be arranged according to the size and shape of a concrete wall block to be manufactured, and a mold is made. Pour fluidized concrete into the frame and solidify it to form a concrete wall block.

  Conventionally, when multiple peripheral frames are fixed to the bed surface of the bottom plate, a plurality of bolt holes are drilled at a pitch of 400 to 500 mm, for example, at the bottom plate portion where the peripheral frame is to be fixed, and each peripheral frame is used with multiple bolt holes Then, it is fixed with multiple lock bolts. Here, by using the same bottom plate and changing the arrangement of the peripheral frames, it is possible to form concrete wall blocks of various sizes and shapes. In this case, the bolt holes that were used before changing the arrangement of the peripheral frame are no longer necessary, and fluid concrete may leak out from the bolt holes. It is necessary to perform a hole-scoring operation in which the plug is strongly plugged and the upper protruding portion of the plug is cut to be flush with the bed surface to ensure a smooth surface.

  In Patent Document 1, a plurality of plate molds, an insertion member capable of connecting the end portions of two plate molds and connecting the plate molds linearly, and two plates There is disclosed a concrete formwork that includes an insertion corner member that can insert end portions of a shaped formwork and connect the plate-like formwork in an orthogonal shape, and can form various concrete molded products. .

  On the other hand, in Patent Document 2, a jig body, a magnet attached to the jig body so as to be attracted to the bottom plate, four support legs for supporting the jig body to be movable up and down with respect to the bottom plate, and a jig body A mold fixing jig having a pressing mechanism having a spring for urging the four support legs downward and a pressing arm that is swingably connected to the jig main body and presses the mold downward. ing. In this mold fixing jig, four support legs are placed and positioned on the bottom plate, and then the jig body is lowered against the urging force of the spring to strongly attract the magnet to the bottom plate. Then, the mold frame is positioned with respect to the jig body, and the mold frame can be pressed and fixed to the bottom plate by the pressing mechanism.

  By the way, especially when the concrete wall is used as an outer wall of a building, in order to prevent water from entering from the outside to the inside of the concrete wall, a joint (joint) between the two concrete wall blocks to be joined is used. In many cases, a sealing material is attached or a so-called water return having a downwardly inclined shape is formed. Therefore, conventionally, when manufacturing a concrete wall block in a concrete manufacturing factory, a groove for mounting a seal member and a joint for forming a water return are formed on the necessary end face. A joint mold member corresponding to the shape of the joint portion is welded to the inner surface of the vertical wall plate of the peripheral frame.

JP-A-5-329818 JP 2003-291123 A

  In the case where a joint portion is formed on a necessary end face of the concrete wall block, a joint mold member corresponding to the shape of the joint portion is welded to the inner surface of the vertical wall plate of the peripheral frame. However, the peripheral frame once welded with the joint mold member is difficult to reuse as a joint part having a shape other than the shape corresponding to the joint mold member. In concrete manufacturing factories, it is required to form joints of various shapes on the end face of the concrete wall block, but each time the shape of the joint is changed, a new peripheral frame welded with a joint mold member is provided. There is a need.

  That is, when the shape of the joint portion is changed, the peripheral frame welded with the joint mold member needs to be replaced with the peripheral frame, and the versatility of the peripheral frame becomes extremely low. The cost required for one replacement of the peripheral frame is, for example, 600,000 to 700,000 yen. Depending on the number of replacements, etc., the annual cost is, for example, several hundred million yen. In addition, instead of welding the joint mold member to the peripheral frame, it is possible to integrally form the joint mold part to the peripheral frame. However, the same problem as described above occurs.

  Furthermore, when a plurality of peripheral frames are fixed to the bed surface of the bottom plate, if a plurality of bolt holes are formed in a portion of the bottom plate to which the peripheral frame is to be fixed, it becomes unnecessary when changing the size and shape of the concrete wall block. Therefore, it is necessary to carry out a very complicated hole marking work in which the bolt hole is tightly closed with a wedge-shaped plug, and the upper protruding portion of the plug is cut to be flush with the bed surface to ensure a smooth surface. In addition, the outer surface of the concrete wall block is molded with the bed surface of the bottom plate, but there is a possibility that the outer surface will have a mark of a plug that closes the bolt hole, and the appearance may be deteriorated, and the bottom plate itself is also damaged. The service life is shortened, and eventually the equipment cost is disadvantageous.

  The purpose of the present invention is to easily and reliably attach and detach joint joint members to the inner surface of the vertical wall plate of the peripheral frame, and to form joint portions of various shapes, thereby increasing the versatility of the peripheral frame, Forms that can greatly reduce the cost required to change the shape. In addition, the peripheral frame can be fixed easily and reliably without the need for drilling bolt holes in the bottom plate. It is an object of the present invention to provide a formwork apparatus that can easily change the arrangement of frames.

  The mold of claim 1 comprises a plurality of peripheral frames removably fixed to the bed surface of the bottom plate made of a steel plate, and a mold for pouring concrete into the peripheral frames to form a concrete molded product, The vertical wall plate of at least one peripheral frame of the plurality of peripheral frames is made of a steel plate, and the at least one peripheral frame is detachably provided on the inner surface of the vertical wall plate and is attached to at least one end surface of the concrete molded product. One or a plurality of joint accessory members for forming a predetermined joint part, and a magnet attached to the joint member for joints so as to be attracted to the vertical wall plate are provided.

  In this case, for example, the concrete molded product is a concrete wall block of a building, and the joint portion is for forming a groove extending in the longitudinal direction of the joint end surface between the two concrete wall blocks to be joined. (Claim 2). Further, the concrete molded product is a concrete wall block of a building, and the joint portion forms an outwardly downward inclined water return that prevents intrusion of water from the outside between the two concrete wall blocks to be joined. (Claim 3).

  According to a fourth aspect of the present invention, there is provided a mold apparatus comprising the mold of the first aspect and a plurality of fixing jigs for releasably fixing at least one peripheral frame to the bottom plate, wherein each of the fixing jigs is a casing. And a magnet attached to the casing so as to be attracted to the bottom plate, and a pressing mechanism having a pressing arm that is swingably connected to the casing and presses a predetermined portion of the peripheral frame downward. In this case, for example, the peripheral frame is formed in a U-shaped cross section and includes a rib that reinforces the vertical wall plate, and the predetermined portion is formed in the rib and the front end of the pressing arm is engaged from above. It consists of a possible engaging recess (claim 5).

  According to the mold of claim 1, concrete molded articles of various sizes and shapes can be formed by changing the arrangement of the plurality of peripheral frames using the same bottom plate. One or a plurality of joint attachment members can be attached to the inner surface of a steel plate vertical wall plate of at least one of the plurality of peripheral frames by adsorbing a magnet attached to the joint attachment member. Then, concrete can be poured into a plurality of peripheral frames (molds) including the peripheral frame to form a concrete molded product, and a predetermined joint portion can be formed on at least one end surface of the concrete molded product. Moreover, the end surface of the concrete molded product corresponding to the vertical wall board can also be formed in a smooth end surface by removing the joint attachment type member from the inner surface of the vertical wall board.

  Since the vertical wall plate of at least one of the peripheral frames is made of steel plate and the magnet is attached to the joint accessory member, the joint accessory member can be easily and securely attached to the inner surface of the vertical wall plate. it can. When changing the shape of the joint part to be formed on a concrete molded product, install a joint accessory member for the joint part shape to be changed, and attach the joint accessory member to the vertical wall plate. Yes. That is, when changing the shape of the joint part, it is not necessary to provide a peripheral frame newly welded with a joint mold member and replace the peripheral frame as in the prior art. The portion including the vertical wall plate other than the magnet) can be reused, so that the versatility of the peripheral frame can be improved, and as a result, the cost required for changing the shape of the joint can be greatly reduced. .

  According to the mold of claim 2, the concrete molded product is a concrete wall block of a building, and the joint portion has a groove extending in the longitudinal direction of the joint end surface between the two concrete wall blocks to be joined. Since it is for forming, the concrete molded product which formed the joint part for forming this groove | channel in the end surface can be reliably manufactured at low cost. The other effects are the same as those of the first aspect.

  According to the formwork of Claim 3, the said concrete molding is a concrete wall block of a building, and the said joint part is the outward which prevents the penetration | invasion of the water from the exterior between two concrete wall blocks joined. Since it is for forming a downwardly inclined water return, it becomes possible to reliably produce a concrete molded product having a joint portion for forming this water return on the end face. The other effects are the same as those of the first aspect.

  According to the formwork apparatus of the fourth aspect, first, since the formwork of the first aspect is provided, the same effect as that of the first aspect is obtained. And a plurality of fixing jigs that fix the at least one peripheral frame to the bottom plate so as to be unlockable. Each fixing jig is a casing, and a magnet attached to the casing so as to be attractable to the bottom plate, It has a pressing mechanism that is pivotably connected to the casing and has a pressing arm that presses a predetermined part of the peripheral frame downward, so that the peripheral frame can be easily and securely released from the base plate without drilling bolt holes in the base plate. It is possible to easily change the arrangement of the peripheral frame along with the change in the size and shape of the concrete molded product, and eliminate the need for the conventional complicated hole trace work by forming the bolt hole. This prevents the deterioration of the external appearance of the concrete molded product formed by the above method, prolongs the life of the bottom plate itself, and is advantageous in terms of equipment cost.

  According to the mold apparatus of claim 5, the peripheral frame is formed in a U-shaped cross section and includes a rib that reinforces the vertical wall plate, and the predetermined portion is formed in the rib and the tip of the pressing arm. Since the part is composed of an engaging recess that can be engaged from above, the strength and rigidity of the peripheral frame (vertical wall plate) is increased, and the pressing mechanism of each fixing jig ensures that the peripheral frame is securely attached to the bottom plate by the pressing arm. Can be pressed and fixed.

  The formwork apparatus of the present invention includes a plurality of peripheral frames that are detachably fixed to a bed surface of a bottom plate made of a steel plate, and a plurality of fixing jigs that fix the plurality of peripheral frames to the bottom plate so as to be unreleasable, A plurality of peripheral frames are made of steel plates, and at least one peripheral frame of the plurality of peripheral frames is detachably provided on the inner surface of the vertical wall plate, and a predetermined joint portion can be formed on at least one end surface of the concrete molded product And a joint attachment member for joints, and a magnet attached to the joint attachment member for attracting to the vertical wall plate. Each fixing jig includes a casing, and the bottom plate on the casing. And a pressing mechanism having a pressing arm that is swingably connected to the casing and presses a predetermined portion of the peripheral frame downward.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a formwork apparatus 1 includes a formwork 3 having a bottom plate 2 made of a steel plate, and a plurality of steel plate peripheral frames 4 that are detachably fixed to the bed surface 2a of the bottom plate 2. A plurality of fixing jigs 5 for fixing the plurality of peripheral frames 4 to the bottom plate 2 so as to be able to be released are provided.

  The bottom plate 2 (also referred to as a surface plate or a bet) is configured as a rectangular plate having a length and width of about 7000 × 3500 mm, for example, and a smooth bet surface 2a is formed on the top surface thereof. By using the bottom plate 2 of this size, the concrete wall block 21 which is a rectangular concrete molded product having a maximum length and width of, for example, about 6600 × 3100 mm can be formed. The outer surface of the concrete wall block 21 is formed by the bed surface 2 a of the bottom plate 2.

  The mold frame 3 is mainly configured as a rectangular frame by a plurality of peripheral frames 4. In this case, the mold frame 3 is provided with one peripheral frame 4 at each side portion of the mold frame 3, for a total of four peripheral frames 4. It consists of However, the mold 3 can be configured as a polygonal frame other than the rectangular frame. FIG. 1 shows the arrangement of a plurality of peripheral frames 4 in the case where the maximum mold 3 is configured with a solid line, and the plurality of peripheral frames 4 in the case where the maximum or smaller mold 3 is configured with a chain line. The arrangement is shown.

  Here, each peripheral frame 4 can be configured by connecting a plurality of peripheral frame segments in a straight line. In this case, the length can be adjusted by changing the number of peripheral frame segments to be connected, etc. The size and shape of the mold 3 can be changed by changing the arrangement of the plurality of peripheral frames 4 by using. When the size / shape of the mold 3 is changed, the adjacent peripheral frames 4 on the two adjacent sides of the four sides of the mold 3 can be used as the reference peripheral frame 4 that does not need to be changed.

  As shown in FIGS. 2 to 4, each peripheral frame 4 has a vertical vertical wall plate 10, a horizontal upper plate 11 welded to the upper end portion of the vertical wall plate 10, and a lower end portion of the vertical wall plate 10. The vertical wall plate 10, the upper plate 11, and the lower plate 12 are formed in a U-shaped cross section, and a plurality of ribs 13 that reinforce the vertical wall plate 10 are provided. , 14 are provided.

  The end surface 21a of the concrete wall block 21 is formed by the vertical wall inner surface 10a of the vertical wall plate 10, and the upper plate 11 and the lower plate 12 both project outward from the vertical wall inner surface 10a side. The width is larger than the width of the upper plate 11, and the lower plate 12 is placed in contact with the bed surface 2 a of the bottom plate 2. As for the plurality of ribs 13 and 14, there are three (one first rib 13 and one) in each of a plurality of fixable portions (see FIG. 1) that can fix the peripheral frame 4 to the bottom plate 2 with a plurality of fixing jigs 5. A pair of second ribs 14) is provided.

  The first rib 13 is formed in a rectangular plate, and its vertical length is about half of the vertical length of the vertical wall plate 10, and its width is substantially the same as the width of the upper plate 11, and its inner end and lower end are It is welded to the vertical wall plate 10 and the lower plate 12. The pair of second ribs 14 is disposed near both sides of the first rib 13 in the longitudinal direction of the peripheral frame 4, and each second rib 14 is formed in an L-shaped plate, and the vertical length thereof is the same as that of the upper plate 11. The width between the lower plates 12 is the same as the width of the lower plate 12, and its inner end, upper end, and lower end are welded to the vertical wall plate 10, upper plate 11, and lower plate 12. ing.

  The 2nd rib 14 consists of the elongate rectangular piece 14a and the overhang | projection piece 14b which protrudes outside from this rectangular piece 14a. The first rib 13 and the pair of second ribs 14 are connected by a first connecting plate 15 which is long in the longitudinal direction of the peripheral frame 4, and the first connecting plate 15 has a pair of second ends at both ends in the length direction. The first rib 13 and the second rib 14 are welded to the outer end surfaces of the rectangular pieces 14 a while being placed on the protruding pieces 14 b of the ribs 14. The pair of second ribs 14 are connected by a second connecting plate 16 that is long in the longitudinal direction of the peripheral frame 4, and the second connecting plate 16 is welded to the outer end surface of the projecting piece 14 b of the second rib 14. Yes. Each of the fixable portions including the ribs 13 and 14 and the connecting plates 15 and 16 can be configured to have sufficient strength and rigidity to withstand the clamping force of the fixing jig 5.

  Further, on the projecting pieces 14b of the pair of second ribs 14, there are formed engaging recesses 14c into which the pressing rods 54 (see FIG. 15) of the fixing jig 5 can be engaged from above. Here, the outer end surface of the protruding piece 14b of the pair of second ribs 14 is slightly inclined, and the second connecting plate 16 fixed to the outer end surface of the protruding piece 14b is also slightly inclined. . The inclination of the second connecting plate 16 is a casing described later of the fixing jig 5 in order to position the second connecting plate 16 (that is, the peripheral frame 4) with respect to the fixing jig 5 fixed to the bottom plate 2. This is adapted to the inclination of 40 positioning surfaces 40a (see FIG. 16).

  By the way, as shown in FIGS. 5 and 6, a plurality of concrete wall blocks 21 formed by the formwork apparatus 1 are assembled at a construction site, and end surfaces 21 a of two adjacent concrete wall blocks 21 are joined to each other. The concrete wall 20 is formed. In particular, when the concrete wall 20 is used as an outer wall of a building, in order to prevent water from entering the inside of the concrete wall 20 from the outside, the two concrete walls to be joined are formed. As shown in FIG. 5, a groove 25 is formed at the joint (joint) between the blocks 21 and a sealing material 25a is mounted, and a groove 26 is formed to form an air hole 26a, or as shown in FIG. In many cases, the groove 27 is formed, the sealing material 27a is attached, and a so-called water return 28 having a downwardly inclined shape is formed. The form 3 (form apparatus 1) of this proposal is suitable for molding the concrete wall block 21 of the concrete wall 20 having such a structure.

  Therefore, as shown in FIGS. 7 to 10, in this mold frame 3, at least one peripheral frame 4 of the four peripheral frames 4 is further provided with the inner surface of the vertical wall plate 10 in addition to the above configuration. One or a plurality of joint attachment members 30 that are detachably provided on 10a and can form predetermined joint portions 22 (22A to 22E) (see FIGS. 11 to 13) on at least one end surface 21a of the concrete wall block 21. (30A to 30E) and a magnet 31 (31A to 31E) attached to the joint accessory member 30 so as to be attracted to the vertical wall plate 10.

  The joint attachment member 30 is formed on the end surface 21a of the concrete wall block 21 in a shape and length corresponding to the shape of the joint portion 22 to be formed, and one end surface thereof is formed into a smooth surface, and the vertical wall plate 10 is formed. It is possible to contact the inner surface 10a of the vertical wall. Here, as with the peripheral frame 4, the joint accessory member 30 can be configured by connecting a plurality of accessory mold member segments in a straight line. In this case, the number of accessory member member segments to be connected is changed. You can adjust the length. It should be noted that some positioning means for positioning the joint accessory member 30 on the vertical wall plate 10 of the peripheral frame 4 may be provided.

  A plurality of magnets 31 of appropriate size and magnetic force are attached to each joint accessory member 30, and these magnets 31 are arranged at appropriate intervals in the length direction of the joint accessory member 30. Each magnet 31 is fixed to the joint attachment member 30 in a state where it is fitted in a recess recessed from the smooth one end surface side, and the one end surface and the outer surface of the magnet 31 are flush with each other. In the present embodiment, a plurality of recesses for attaching the plurality of magnets 31 to the joint accessory member 30 are formed. However, a long recess is formed in the length direction of the joint accessory member 30, and the common A plurality of magnets 31 may be attached to the recess. In this case, a single elongated single magnet 31 may be used instead of the plurality of magnets 31.

  When the joint accessory members 30A and 30B of FIG. 7 are attached to the vertical wall plate 10 of the peripheral frame 4, the joint portions 22A and 22B of FIG. 11 are formed on the end surface 21a of the concrete wall block 21 to be molded. 12 is attached to the end surface 21a of the concrete wall block 21 to be molded, and one end portion of the end surface 21a becomes a stepped end surface. When the joint attachment members 30D and 30E of FIG. 9 are attached, the joint portions 22D and 22E of FIG. 13 are formed on the end surface 21a of the concrete wall block 21 to be molded, and one end portion of the end surface 21a is stepped down. It becomes the end face.

  Here, the joint portions 22A, 22Ca, 22D form grooves 25, 27 extending in the longitudinal direction of the joint end face 21a between the two concrete wall blocks 21 to be joined, and the grooves 25, 27 have a sealing material. The joint portion 22B forms a groove 26 extending in the longitudinal direction of the joining end surface 21a between the two concrete wall blocks 21 to be joined, and the groove 26 is used to mount air. The joints 22Cb and 22E form a hole 26a, and an outwardly downward inclined water return 28 is formed between the two concrete wall blocks 21 to be joined to prevent water from entering from the outside. It is for doing.

Next, the plurality of fixing jigs 5 will be described.
The plurality of fixing jigs 5 all have the same structure. As shown in FIGS. 14 and 15, each fixing jig 5 includes a casing 40, a strong magnet 41 attached to the casing 40 so as to be attracted to the bed surface 2a of the bottom plate 2, and a casing 40 against the bed surface 2a. The lifting / lowering support mechanism 42 having four support legs 50 capable of supporting the upper and lower sides of the frame is connected to the casing 40 so as to be swingable, and the magnet 41 is a predetermined part of the peripheral frame 4 while being attracted to the bed surface 2a. A pressing mechanism 43 having a pressing arm 53 that presses the pair of engaging recesses 14c downward is provided.

  The casing 40 is formed in a rectangular parallelepiped shape with the lower side opened, and is fixed by a bolt 41 a in a state where the magnet 41 is accommodated in the casing 40, and the lower surface of the magnet 41 faces the lower side of the casing 40. The second connecting plate 16 of the peripheral frame 4 contacts the positioning surface 40 a on the peripheral frame 4 side of the casing 40, and the peripheral frame 4 is positioned with respect to the casing 40. A grip 40b for gripping the casing 40 is provided at the end of the casing 40 in the length direction, and a bar difference is inserted into the lower end of the side wall to release the magnet 41 from the bed surface 2a. The insertion hole 40c is formed.

  The elevating support mechanism 42 includes four upright shaft-like support legs 50 that are mounted in the vicinity of the four corners of the casing 40 so as to be able to move up and down, and springs (not shown) that urge the support legs 50 downward. In a state where the magnet 41 is not attracted to the bed surface 2a, the magnet 41 is held in a state protruding by a predetermined amount below the lower surface of the magnet 41. When the casing 40 (magnet 41) is pressed against the urging force of the spring and lowered while the four support legs 50 are placed on the bed surface 2a, the magnet 41 is strongly attracted to the bed surface 2a.

  The pressing mechanism 43 includes a pair of swinging arms 53 whose base ends are hinged to the casing 40, a pressing rod 54 connected to the distal ends of the pair of swinging arms 53, and a pair. A connecting plate 55 for connecting the swing arm 53 and an operating member 56 mounted on the connecting plate 55 so as to be rotatable. The fastening portion 57 interlocked with the operation member 56 can be screwed into the casing 40, and when the screwing is released, the swing arm 53 is raised to the retracted state as shown by a chain line in FIG. In this state, the peripheral frame 4 is positioned on the casing 40.

  With the peripheral frame 4 positioned on the casing 40, the swing arm 53 is lowered, the operation member 56 is operated, the fastening portion 57 is screwed into the casing 40, and the pressing rod at the tip of the swing arm 53 is pressed. When the bolts 54 are tightened so as to be lowered, the peripheral frame 4 is moved downward via the engaging recesses 14c in a state where the pressing rod 54 is engaged with the pair of engaging recesses 14c of the peripheral frame 4 from above. It is pressed and fixed to the bed surface 2 a of the bottom plate 2.

Next, a method for forming the concrete wall block 21 using the mold apparatus 1 and forming the joint portion 22 on the at least one end face 21a at that time will be briefly described.
First, in a state where the bet surface 2a of the bottom plate 2 is clean, in accordance with the shape and size of the concrete wall block 21 to be formed, marking of the fixed fixing positions of the plurality of fixing jigs 5 is performed on the bed surface 2a. . Next, after positioning the plurality of fixing jigs 5 at the fixed fixing positions on the betting surface 2a, the magnets 41 are attracted and fixed to the betting surface 2a.

  Next, after the release agent is applied to the necessary portions of the bed surface 2a, the four peripheral frames 4 corresponding to the concrete wall blocks 21 to be formed are positioned on the plurality of fixing jigs 5, respectively. The mold 3 made of a rectangular frame is made by pressing and fixing to the bed surface 2a with the fixing jig 5d. Thereafter, if it is necessary to set a reinforcing bar in the formwork 3 and form a hole in the concrete wall block 21, a formwork member dedicated to the hole is attached to the bed surface 2a with a plurality of fixing jigs 5. To fix.

  Here, before or after fixing the peripheral frame 4 to the bed surface 2 a with the fixing jig 5, the joint attachment member 30 corresponding to the shape of the joint portion 22 is formed on the peripheral frame 4 forming the joint portion 22. Install. Flowing concrete is poured into the mold 3 thus configured and solidified to form a concrete wall block 21 having a joint portion 22 formed on the end face 21a. Thereafter, the fixing of the peripheral frame 4 by the plurality of fixing jigs 5 is released, the peripheral frame 4 is removed, and then the formed concrete wall block 21 is lifted by a crane and carried out of the bottom plate 2.

According to the formwork apparatus 1 demonstrated above, there exist the following effects.
By using the same bottom plate 2 and changing the arrangement of the four peripheral frames 4, concrete wall blocks 21 having various sizes and shapes can be formed. A magnet in which one or a plurality of joint accessory members 30 are attached to the joint accessory member 30 on the vertical wall inner surface 10 a of the steel plate vertical wall plate 10 of at least one of the four peripheral frames 4. 31 can be adsorbed and attached. Then, concrete is poured into the four peripheral frames 4 (form frame 3) including the peripheral frame 4 to form the concrete wall block 21, and a predetermined joint portion 22 is formed on at least one end surface 21a of the concrete wall block 21. Can be formed. Moreover, the end surface 21a of the concrete wall block 21 corresponding to the vertical wall board 10 can also be formed in a smooth end surface by removing the joint type attachment member 30 from the vertical wall inner surface 10a of the vertical wall board 10.

  Since the vertical wall plate 10 of at least one peripheral frame 4 of the four peripheral frames 4 is made of a steel plate and the magnet 31 is attached to the joint accessory member 30, the vertical wall inner surface 10 a of the vertical wall plate 10 is used for joints. The attached mold member 30 can be easily and reliably attached and detached. When the shape of the joint portion 22 formed in the concrete wall block 21 is changed, the joint accessory member 30 corresponding to the shape of the joint portion 22 to be changed is provided, and the joint accessory member 30 is a vertical wall plate. 10 can be supported. That is, when the shape of the joint portion 22 is changed, it is not necessary to provide a peripheral frame newly welded with the joint die member and replace the peripheral frame as in the prior art. Since the portion including the vertical wall plate 10 other than the member 30 (magnet 31) can be reused, the versatility of the peripheral frame 4 can be improved. As a result, the cost required for changing the shape of the joint portion 22 can be reduced. It can be greatly reduced.

  The concrete wall block 21 is a block that becomes a part of the concrete wall 20 of the building, and the joint portions 22A, 22B, 22Ca, and 22D are disposed between the two concrete wall blocks 21 to be joined in the longitudinal direction of the joining end face 21a. Therefore, the concrete wall block 21 in which the joint portions 22A, 22B, 22Ca, and 22D for forming the grooves 25 to 27 are formed on the end surface 21a can be reliably and inexpensively formed. The joint portions 22Cb and 22E can be manufactured, and are formed to form an outwardly downward inclined water return 28 for preventing water from entering from between the two concrete wall blocks 21 to be joined. Therefore, the concrete wall block 21 in which the joint portions 22Cb and 22E for forming the water return 28 are formed on the end surface 21a is surely provided. Less expensive to manufacture.

  A plurality of fixing jigs 5 for fixing the four peripheral frames 4 to the bottom plate 2 so as to be unreleasable are provided, and the fixing jigs 5 are attached to the casing 40 and the casing 40 so as to be attractable to the bottom plate 2. 41 and a pressing mechanism 43 having a pressing arm 53 that is pivotably connected to the casing 40 and presses the pair of engaging recesses 14c of the peripheral frame 4 downward, so that a bolt hole is drilled in the bottom plate 2. The peripheral frame 4 can be fixed to the bottom plate 2 in such a manner that it can be easily and reliably released, and the arrangement of the peripheral frame 4 can be easily changed in accordance with the change in the size and shape of the concrete wall block 21 to form a bolt hole. This eliminates the need for the conventional troublesome hole mark work, prevents the appearance of the outer surface of the concrete wall block 21 formed by the bed surface 2a of the bottom plate 2 from deteriorating, prolongs the life of the bottom plate 2 itself and increases the equipment cost. Advantageous to become.

  The peripheral frame 4 is formed in a U-shaped cross section and includes a plurality of ribs 13 and 14 that reinforce the vertical wall plate 10. Since the pair of engaging recesses 14a that can be engaged from the upper side by the pressing rod 54 at the tip of 53 is formed, the strength and rigidity of the peripheral frame 4 (vertical wall plate 10) is increased, and each fixing jig 5 With the pressing mechanism 43, the peripheral frame 4 can be reliably pressed and fixed to the bottom plate 2 with the pressing rod 54 at the tip of the pressing arm 53.

  In addition, it can also comprise in the mold apparatus 1 which can shape | mold concrete molded articles other than the concrete wall block 21. FIG. Further, the mold 3 can be composed of four or more peripheral frames 4. Also, three or more joint attachment members 30 may be attached to the vertical wall plate 10 of at least one peripheral frame 4. Alternatively, the plurality of fixing jigs 5 may be omitted, and a plurality of bolt holes may be drilled in the bottom plate 2 to fix the peripheral frame 4 with a plurality of lock bolts. Further, the front portion of the peripheral frame 4 does not have to be made of steel plate, and at least the vertical wall plate 10 may be made of steel plate. In addition, various modifications can be added without departing from the spirit of the present invention.

It is a top view of the formwork apparatus which concerns on an Example. It is a top view of the principal part of the periphery frame of a formwork. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is a cross-sectional view of a concrete wall. It is a longitudinal cross-sectional view of a concrete wall. It is a longitudinal cross-sectional view of the peripheral frame provided with the joint type member for joints and the magnet. It is a longitudinal cross-sectional view of the peripheral frame provided with the joint type member for joints and the magnet. It is a longitudinal cross-sectional view of the peripheral frame provided with the joint type member for joints and the magnet. It is a perspective view from the back upper side of the attachment type member for joints. It is a partial sectional view including an end face of a concrete wall block. It is a partial sectional view including an end face of a concrete wall block. It is a partial sectional view including an end face of a concrete wall block. It is a top view of the principal part of a peripheral frame, and a fixing jig. It is a longitudinal cross-sectional view of the principal part of a peripheral frame and a fixing jig.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Formwork apparatus 2 Bottom plate 2a Bet surface 3 Mold frame 4 Peripheral frame 5 Fixing jig 10 Vertical wall plate 10a Vertical wall inner surface 13 First rib 14 Second rib 14c Engaging recess 21 Concrete wall block 21a End surfaces 22, 22A- 22E Joint portion 25 to 27 Groove 28 Water return 30, 30A to 30E Joint attached member 31, 31A to 31E Magnet 40 Casing 41 Magnet 43 Press mechanism 53 Press arm

Claims (5)

A plurality of peripheral frames that are detachably fixed to the bed surface of the bottom plate made of a steel plate, and a mold for pouring concrete into the peripheral frames to form a concrete molded product,
A vertical wall plate of at least one peripheral frame of the plurality of peripheral frames is composed of a steel plate;
The at least one peripheral frame is
One or a plurality of joint attachment members that are detachably provided on the inner surface of the vertical wall plate and can form a predetermined joint on at least one end surface of the concrete molded product;
A magnet attached to the joint member for joints so as to be attracted to the vertical wall plate;
Formwork characterized by comprising. The concrete molding is a concrete wall block of a building;
The said joint part is for forming the groove | channel extended in the longitudinal direction of the joining end surface between the two concrete wall blocks joined, The formwork of Claim 1 characterized by the above-mentioned. The concrete molding is a concrete wall block of a building;
2. The joint according to claim 1, wherein the joint portion is for forming a water return having an outward downward slope that prevents intrusion of water from the outside between the two concrete wall blocks to be joined. The formwork described. The mold according to claim 1, and a plurality of fixing jigs that fix the at least one peripheral frame to the bottom plate so that the fixing can be released.
Each fixing jig includes a casing, a magnet attached to the casing so as to be attracted to the bottom plate, and a pressing mechanism having a pressing arm that is swingably connected to the casing and presses a predetermined portion of the peripheral frame downward. A mold apparatus characterized by comprising: The peripheral frame is formed in a U-shaped cross section and includes ribs for reinforcing the vertical wall plate,
5. The formwork apparatus according to claim 4, wherein the predetermined portion is formed by an engagement recess formed on the rib and engageable from above by a tip end portion of the pressing arm.