JP4895589B2 - Flange fastening structure, flange fastening method and concrete product molding formwork apparatus for concrete product molding - Google Patents

Description

  The present invention relates to a flange fastening structure and a flange fastening method for a concrete product molding form used when molding concrete products such as concrete piles and fume pipes. The present invention also relates to a concrete product forming form apparatus used when forming concrete products such as concrete piles and fume pipes.

Concrete products such as concrete piles and fume pipes use centrifugal force by using a pair of upper and lower molds that form a semi-cylindrical shape for the purpose of facilitating the placement of the bars within a pair of upper and lower molds that form a semi-cylindrical shape In general, the molding is performed. When centrifugally molding a concrete product using such a mold, a pair of left and right side flanges provided on the upper mold and a pair of left and right side flanges provided on the upper mold are used. As a method of fastening these side flanges, conventionally, a method of fastening the side flanges using a large number of bolts and nuts (see Patent Document 1), or a side flange of the upper mold frame is used. A method of fastening the side flange of the upper mold frame and the side flange of the lower mold frame by engaging with the provided upper lock piece and the lower lock piece provided on the side flange of the lower mold frame (see Patent Document 2) There is.
JP 2000-117723 A Japanese Utility Model Publication No. 52-32760

  However, in the flange fastening method disclosed in Patent Document 1, when the total length of the lower mold and the upper mold is 12 m, for example, there are 60 to 80 tightening points with bolts and nuts. For this reason, there has been a problem that it takes much time and labor to fasten the side flanges of the lower mold and the upper mold. Recently, there has also been proposed a method for molding a concrete product by joining a pair of upper and lower molds formed around 2 to 2.5 m. In this method, the length of the concrete product to be molded is also proposed. When the length is 12 m, for example, there are 60 to 80 tightening places with bolts and nuts, and it takes a lot of time and labor to fasten the side flanges of the lower and upper molds. was there.

  On the other hand, in the flange fastening method disclosed in Patent Document 2, the upper die is engaged with the lower lock piece provided on the lower side flange in order to engage the upper lock piece provided on the upper side flange with the upper die. Since the frame has to be shifted in the longitudinal direction, a large facility is required for fastening work between the side flanges, resulting in an increase in equipment costs.

  The present invention has been made by paying attention to the above-described problems, and the object thereof is to install a pair of upper and lower side flanges provided on an upper mold frame and a lower mold frame used when molding a concrete product. It is an object of the present invention to provide a flange fastening structure for a concrete product forming mold that can be fastened without causing an increase in the amount of steel. Another object of the present invention is to provide a concrete product capable of fastening the side flange of the upper mold and the side flange of the lower mold used for molding a concrete product without causing an increase in equipment costs. An object of the present invention is to provide a flange fastening method for a forming mold. Still another object of the present invention is to provide a concrete product molding form apparatus that can firmly fasten an upper side flange and a lower side flange without requiring much labor and time.

In order to solve the above-mentioned problems, a flange fastening structure for a concrete product molding form according to the invention of claim 1 is provided in an upper mold form and a lower mold form used when molding a concrete product. A pair of left and right side flanges fastened to each other, wherein a fastener guide plate is fixed to a lower surface portion of the side flange provided on the lower mold frame along the longitudinal direction of the lower mold frame. A plurality of notches provided in the side flange of the upper mold frame at intervals in the longitudinal direction of the upper mold frame, and having a fastener guide groove slidably fitted to the fastener guide plate, and the notch The side flanges of the lower mold frame and the upper mold frame are fastened by a total of four flange fasteners having a plurality of wedge plates formed in a size that does not interfere with the fastener guide groove. That And butterflies.

The flange fastening structure of a concrete product molding form according to the invention of claim 2 is the flange fastening structure of the concrete product forming mold according to claim 1, wherein the fastener guide plate has a trapezoidal cross section. It is characterized by being formed.
The flange fastening structure for a concrete product molding form according to the invention of claim 3 is the flange fastening structure for a concrete product molding mold according to claim 1 or 2, wherein the flange fastener is An upper fastening surface for fastening the side flange of the upper mold from above and a lower fastening surface for fastening the side flange of the lower mold from below.
The flange fastening structure for a concrete product molding form according to the invention of claim 4 is the flange fastening structure for a concrete product molding mold according to claim 3, wherein the wedge plate is located above the flange fastener. It is fixed to the fastening surface, and the fastener guide groove is formed on the lower fastening surface of the flange fastener.

  The flange fastening method for a concrete product molding form according to the invention of claim 5 of the present invention comprises a pair of left and right side flanges provided on an upper mold and a lower mold used when molding a concrete product. A method of fastening between two flange fasteners having an upper fastening surface for fastening a side flange of the upper mold from above and a lower fastening surface for fastening a side flange of the lower mold from below. The pusher is disposed on the upper mold frame and the lower mold frame so that the side flange is fastened by sliding the flange fastener to one end side and the other end side of the upper mold frame and the lower mold frame.

According to a sixth aspect of the present invention, there is provided a flange fastening method for a concrete product molding mold according to the sixth aspect of the present invention, wherein the side flange of the upper mold is the upper side. It is characterized by being tightened by a wedge plate provided on the tightening surface.
According to a seventh aspect of the present invention, there is provided a flange fastening method for a concrete product forming mold according to the seventh aspect of the present invention, wherein the wedge plate is a side of the upper mold. It is characterized by being formed in a size that does not interfere with the notch formed in the flange.

A flange fastening method for a concrete product molding mold according to an eighth aspect of the present invention is the flange fastening method for a concrete product molding mold according to any one of claims 5 to 7, wherein the lower side The mold has a fastener guide plate for guiding the flange fastener in the longitudinal direction of the lower mold on the lower surface of the side flange.
The flange fastening method for a concrete product molding mold according to the ninth aspect of the present invention is the flange fastening method for a concrete product molding mold according to the eighth aspect, wherein the lower fastening surface of the flange fastener is used. Has a fastener guide groove slidably fitted to the fastener guide plate.
According to a tenth aspect of the present invention, there is provided a flange fastening method for a concrete product molding mold according to the tenth aspect of the present invention, wherein the fastener guide groove has a trapezoidal cross section. It is characterized by being formed.

  According to an eleventh aspect of the present invention, a concrete product molding formwork apparatus includes a concrete product molding upper mold having a pair of left and right upper side flanges, and a pair of left and right lower sides below the upper mold. A concrete mold forming lower mold having a side flange, and a pair of side flange fastening mechanisms for fastening the upper side flange and the lower side flange, the side flange fastening mechanism comprising the upper side flange A pair of side flange fastening plates having a bowl-shaped arm portion that passes through a slit formed in the flange and the lower side flange and protrudes from the lower surface portion of the lower side flange, and a bowl shape of the side flange fastening plate A plurality of tightening force generating members provided on the lower surface portion of the lower side flange corresponding to the arm portion, and the side flange tightening plate Slide the side flange and the lower side flange to one end in the longitudinal direction and the other end in the longitudinal direction to engage the saddle-shaped arm portion of the side flange clamping plate with the wedge surface formed on the clamping force generating member And a tightening plate slide mechanism section.

  A concrete product forming mold apparatus according to a twelfth aspect of the present invention is the concrete product forming mold apparatus according to the eleventh aspect, wherein the clamping plate slide mechanism is located at the center of the lower surface of the lower side flange. A tightening nut provided on the upper side flange, a tightening bolt inserted through the through-hole formed in the upper side flange and screwed into the tightening nut, and between the head of the tightening bolt and the threaded portion And a plurality of link members that connect the clamping force transmission member and the pair of side flange clamping plates via a coupling pin. .

A concrete product molding formwork apparatus according to a thirteenth aspect of the present invention is the concrete product molding formwork apparatus according to the eleventh or the twelfth aspect, wherein the side flange clamping plate is connected to the upper mold form. The side flange fastening mechanism has a plurality of guide members for guiding in the longitudinal direction of the lower mold.
A concrete product forming mold apparatus according to a fourteenth aspect of the present invention is the concrete product forming mold apparatus according to any one of claims 11 to 13, wherein the flange fastening plate is fastened to a side flange. The side flange fastening mechanism has a flange fastening plate return spring for returning to a previous position.

The concrete product molding form apparatus according to the invention of claim 15 of the present invention is the concrete product molding form apparatus according to any one of claims 11 to 14, wherein the clamping force generating member is used. The wedge surface is formed on a plate-like member that is detachably provided.
A concrete product molding formwork apparatus according to a sixteenth aspect of the present invention is the concrete product molding mold apparatus according to any one of the first to fifteenth aspects, wherein the fastening force generating member is placed below the clamping force generating member. A holding member for holding the side side flange so as to be movable back and forth in the longitudinal direction is provided on the lower surface portion of the lower side flange, and a position adjusting screw for adjusting the position of the wedge surface is provided on the holding member. To do.

  According to the flange fastening structure of the concrete product molding form according to the present invention, when the flange fastener moves to one end side and the other end side of the lower mold form and the upper mold form, the side flange and the lower side of the upper mold form The side flanges of the mold are clamped by the upper clamping surface and the lower clamping surface of the flange fastener. Therefore, the upper side flange and the lower side flange can be fastened without shifting the upper mold frame in the longitudinal direction with respect to the lower mold frame, and no large-scale equipment is required. A pair of upper and lower side flanges provided on the upper and lower molds used can be fastened without causing an increase in equipment costs.

  According to the flange fastening method for a concrete product forming mold according to the present invention, the flange fastener is moved between one end side and the other end side of the lower mold form and the upper mold form by the pusher disposed between the two flange fasteners. The side flange of the upper mold and the side flange of the lower mold are clamped by the upper clamp surface and the lower clamp surface of the flange fastener. Therefore, the upper side flange and the lower side flange can be fastened without shifting the upper mold frame in the longitudinal direction with respect to the lower mold frame, and no large-scale equipment is required. A pair of upper and lower side flanges provided on the upper and lower molds used can be fastened without causing an increase in equipment costs.

  According to the concrete product molding form apparatus according to the present invention, when the pair of flange clamping plates move to one longitudinal end and the other longitudinal end of the upper side flange and the lower side flange, the flange clamping plate The shaped arm engages with the wedge surface of the tightening force generating member provided on the lower surface of the lower side flange, and the upper side flange and the lower side flange are moved by the flange tightening plate by the generated tightening force. Tightened. Therefore, since it is not necessary to use a large number of bolts and nuts when fastening the upper side flange and the lower side flange, the upper side flange and the lower side flange are firmly fastened without requiring much labor and time. be able to.

In addition, according to the mold apparatus for molding a concrete product according to the present invention, since there are only two places to be tightened by bolts and nuts, variation in the tightening force is suppressed as in the case of using a large number of bolts and nuts. As a result, the upper side flange and the lower side flange can be uniformly fastened to the mold frame in the longitudinal direction.
Furthermore, according to the concrete product forming form apparatus according to the present invention, when fastening the upper side flange and the lower side flange, it is not necessary to use a tightening tool such as an impact wrench for a long time, The upper side flange and the lower side flange can be fastened without causing limb numbness or vibration disease.

Before explaining the flange fastening method and the flange fastening structure of a concrete product forming mold according to the present invention, the mold used when molding a concrete product such as a concrete pile will be described with reference to FIGS. To do.
1 and 2, reference numeral 10 denotes a concrete product centrifugal mold used for centrifugal molding of a concrete product. The centrifugal mold 10 includes a lower mold 11 </ b> A and an upper mold 11 </ b> B. It is configured. The lower mold 11A and the upper mold 11B have a semi-cylindrical shape, and a pair of upper and lower side flanges 12 and 14 are provided at both ends of the molds 11A and 11B.

  The lower mold 11A and the upper mold 11B have a length of about 2 to 2.5 m, and halved joint flanges 16 are provided at both longitudinal ends of the molds 11A and 11B. ing. In addition, a half steel ring 19 is provided on the outer periphery of the molds 11A and 11B, and a rotational force is applied to the molds 11A and 11B through the steel ring 19. Further, the lower mold 11A and the upper mold 11B are formed of an outer body 17 and an inner body 18 (see FIG. 3) having a semi-cylindrical shape.

Next, an example of a flange fastener used in a flange fastening method and a flange fastening structure of a concrete product forming mold according to the present invention will be described with reference to FIGS.
In FIG. 4, reference numeral 21 denotes a flange fastener used in the present invention. The flange fastener 21 includes two upper fastening surfaces 23 for fastening the side flanges of the upper mold frame from above, and the side of the lower mold frame. And a lower fastening surface 25 for fastening the flange from below. The upper clamping surface 23 and the lower clamping surface 25 are opposed to each other, and the upper clamping surface 23 has a plurality of wedge plates 24 (side flange clamping) having wedge surfaces 24a as shown in FIG. (Attached plate) is provided. On the other hand, a fastener guide groove 22 (see FIGS. 4 and 6) is formed on the lower fastening surface 25, and the cross section of the fastener guide groove 22 has a trapezoidal shape. A plurality of slope portions 14a (see FIG. 13) that engage with the wedge surface 24a of the wedge plate 24 are formed on the side flange of the upper mold.

  When fastening the side flange 12 of the lower mold 11A and the side flange 14 of the upper mold 11B using such a flange fastener 21, first, as shown in FIG. 7, the side of the upper mold 11B Four notches 15 larger than the wedge plate 24 of the flange fastener 21 are respectively formed in the flange 14 at predetermined positions. Further, a fastener guide plate 13 (see FIG. 7) that is slidably fitted to the fastener guide groove 22 of the flange fastener 21 is attached to a predetermined position on the lower surface portion of the side flange 12 of the lower mold 11A. Keep it.

  Thus, if the notch 15 is formed in the side flange 14 of the upper mold 11B and the fastener guide plate 13 is attached to the lower surface portion of the side flange 12 of the lower mold 11A, the side of the lower mold 11A After the flange 12 and the side flange 14 of the upper mold 11B are overlapped, as shown in FIG. 9, the side flange 14 of the upper mold 11B and the side flange 12 of the lower mold 11A are located above the flange fastener 21. Two flange fasteners 21 are set at predetermined positions on both the left and right sides of the lower mold 11A and the upper mold 11B so as to be sandwiched between the clamp surface 23 and the lower clamp surface 25, respectively. After that, as shown in FIG. 10, the hydraulic pusher 26 is disposed between the flange fasteners 21 set by two. Then, the pusher 26 is operated to slide the flange fastener 21 to one end side and the other end side of the lower mold 11A and the upper mold 11B as shown in FIG. Then, as shown in FIGS. 12 and 13, the fastener guide plate in which the fastener guide groove 22 formed in the lower fastening surface 25 of the flange fastener 21 is attached to the side flange 12 of the lower mold 11A. 13 and the wedge plate 24 provided on the upper fastening surface 23 of the flange fastener 21 moves onto the side flange 14 of the upper mold 11B. Thereby, the side flange 14 of the upper mold 11 </ b> B and the side flange 12 of the lower mold 11 </ b> A are clamped between the upper clamping surface 23 and the lower clamping surface 25 of the flange fastener 21.

  Therefore, when the side flange 14 of the upper mold 11B and the side flange 12 of the lower mold 11A are fastened, the side flange of the upper mold can be moved without moving the upper mold as in the prior art described above. Can be fastened to the side flange of the lower mold, so that the side flange 14 of the upper mold 11B and the side flange 12 of the lower mold 11A can be fastened without causing an increase in equipment costs.

  Further, in the above-described embodiment, the fastener guide plate 13 and the fastener guide groove 22 are “present” and “by” because the cross section of the fastener guide plate 13 along the radial direction of the lower mold 11A is trapezoidal. The relationship is “ditch”. Thereby, since the flange fastener 21 does not fall off from the side flange 12 protruding in the horizontal direction from the side end portion of the lower mold 11A, the flanges of the lower mold 11A and the upper mold 11B are securely connected to each other. Can be concluded.

  In the above-described embodiment, the case where the present invention is applied to the case where the side flange of the upper mold and the side flange of the lower mold used for centrifugal molding of the concrete product are described has been described. The present invention is also applied to the case where the side flange of the upper mold and the side flange of the lower mold used for molding a concrete product by a method other than centrifugal molding are fastened. Is possible.

In the above-described embodiment, the hydraulic pusher 26 is used as means for sliding the two flange fasteners 21 to one end side and the other end side of the molds 11A and 11B. However, the present invention is not limited to this. For example, two flange fasteners 21 may be slid to one end side and the other end side of the molds 11A and 11B using a pneumatic pusher.
Furthermore, in embodiment mentioned above, what has two upper side clamping surfaces 23 and one lower side clamping surface 25 was illustrated as a flange fastener which fastens the side flanges of a lower mold form and an upper mold form. However, the present invention is not limited to this, and for example, a flange fastener having one or more upper fastening surfaces 23 and one lower fastening surface 25 may be used.

Next, a first embodiment of a concrete product forming mold apparatus according to the present invention will be described with reference to FIGS.
14 and 15, reference numeral 30 denotes a concrete product molding form apparatus according to the first embodiment of the present invention. The concrete product molding form apparatus 30 includes an upper mold form for concrete product molding (hereinafter referred to as a concrete product molding upper form frame). 11B and a lower mold frame for molding concrete products (hereinafter referred to as “lower mold frame”) 11A (see FIG. 15). These molds 11A and 11B have a semi-cylindrical shape. Among these molds 11A and 11B, the upper mold 11B is provided with a pair of left and right upper side flanges 14 and 14, and the lower mold 11A includes Are provided with a pair of left and right lower side flanges 12,12. Two half-split steel rings 19 are provided on the outer peripheries of the lower mold 11A and the upper mold 11B, and a rotational force is applied to the molds 11A and 11B via these steel rings 19. It has become so. Further, the length of the lower mold 11A and the upper mold 11B is about 2 to 2.5 mm, and half joint flanges 16 are provided at both longitudinal ends of the molds 11A and 11B. Yes.

  The upper side flange 14 and the lower side flange 12 are fastened by a pair of left and right side flange fastening mechanisms 32, 32 (see FIG. 14). As shown in FIG. 15, these side flange fastening mechanisms 32, 32 are a pair of side flange fastening plates each having two hook-shaped arm portions (hook portions) 33 a protruding from the lower surface portion of the lower side flange 12. 33, 33, and a plurality of tightening force generating members 31 (see FIG. 16) provided on the lower surface portion of the lower side flange 12 corresponding to the bowl-shaped arm portions 33a of the side flange tightening plates 33, 33. The upper side flange 14 and the lower side flange 12 are provided with four slits 39 at predetermined positions so that the hook-shaped arm portion 33a protrudes from the lower surface portion of the lower side flange 12. Yes.

  Further, the side flange fastening mechanisms 32, 32 slide the side flange fastening plates 33, 33 in the longitudinal direction of the upper mold 11B and the lower mold 11A to fasten the hook-shaped arm portion 33a of the side flange fastening plate 33. A clamping plate slide mechanism 40 is provided to be engaged with a wedge surface 31 a (see FIG. 16) formed on the force generating member 31, and the side flange clamping plate 33 is disposed on the upper surface of the upper side flange 14. A plurality of (for example, four) guide members 35 for guiding the upper surface portion and the left and right side surface portions in the longitudinal direction of the upper side flange 14 are provided. As shown in FIG. 17, a coil spring 37 as a clamping plate return spring is interposed between the joint flange 16 and the side flange clamping plate 33 described above.

  The tightening plate slide mechanism 40 includes a tightening nut 41 fixed to the center of the lower surface of the lower side flange 12, a tightening bolt 43 that is screwed into the tightening nut 41, and a head of the tightening bolt 43. A tightening force transmitting member 44 is provided between 43a and the threaded portion 43b so as to be rotatable. A through hole 42 through which the tightening bolt 43 is passed is formed in the upper side flange 14. ing. The fastening plate slide mechanism 40 includes four link members 46 connected to the side flange fastening plates 33 and 33 via connection pins 45, respectively. The above-described tightening force transmission members 44 are connected via connecting pins 47, respectively. The link member 46 is curved in an arcuate shape as shown in FIG.

  In the concrete product forming mold apparatus 30 configured as described above, when the tightening bolt 43 is screwed into the tightening nut 41 using a tightening tool such as a wrench, as shown in FIG. The clamping force transmission member 44 provided between the head 43a of the attachment bolt 43 and the screw part 43b approaches the upper surface of the upper side flange 14, and accordingly, the side flange clamping plates 33 and 33 are molded. Slide to one end side and the other end side of the frames 11A and 11B. When the tightening bolt 43 is further screwed into the tightening nut 41, the hook-shaped arm portion 33a of the side flange tightening plate 33 is connected to the wedge surface 31a of the tightening force generating member 31 as shown in FIG. The upper side flange 14 and the lower side flange 12 are tightened by the flange tightening plate 33 by the tightening force generated at this time.

Accordingly, in the above-described concrete product forming mold apparatus 30, a large number of bolts and nuts are not used when the upper side flange 14 and the lower side flange 12 are fastened, which requires a lot of labor and time. The upper side flange 14 and the lower side flange 12 can be firmly fastened.
Further, since only two bolts and nuts are used for tightening, variation in the tightening force can be suppressed as in the case of using a large number of bolts and nuts. As a result, the upper side flange 14 and the lower side flange 12 can be suppressed. Can be uniformly fastened to the mold over the longitudinal direction.

Further, when the upper side flange 14 and the lower side flange 12 are fastened, it is not necessary to use a tightening tool such as an impact wrench for a long time. The flange 14 and the lower side flange 12 can be fastened.
In the first embodiment described above, the case where the present invention is applied to a mold apparatus used when centrifugally molding a concrete product has been described. However, the present invention is not limited to this, and a method other than centrifugal molding is used. The present invention can also be applied to a formwork apparatus used when molding a concrete product.

In the above-described first embodiment, the side flange fastening plate 33 of the side flange fastening mechanism 32 is exemplified as having the two hook-shaped arm portions 33a. However, the present invention is not limited to this, and the side flange fastening mechanism 32 is not limited thereto. As the side flange fastening plate 33, one having one or three or more hook-shaped arm portions 33a may be used.
In the first embodiment described above, the coil spring 37 as a clamping plate return spring is provided between the joint flange 16 and the side flange clamping plate 33 of the molds 11A and 11B. As in the second embodiment, the coil spring 37 as a clamping plate return spring may be provided on the outer periphery of the threaded portion of the clamping bolt 43. According to such a configuration, the side flange is clamped by one coil spring 37. Since the plate 33 can be returned to a predetermined position, the number of parts can be reduced. In FIG. 20, reference numeral 52 is a washer, and 53 is a coil spring retaining seat. The coil spring retaining seat 53 is fixed to the upper surface portion of the upper side flange 14.

Next, a third embodiment of a concrete product forming mold apparatus according to the present invention will be described with reference to FIGS.
In FIG. 21, reference numeral 55 denotes a concrete product molding formwork apparatus according to the second embodiment of the present invention. The concrete product molding formwork 55 includes an upper mold form 11B and a lower mold form 11A (FIG. 22). These molds 11A and 11B have a semi-cylindrical shape. Among these molds 11A and 11B, the upper mold 11B is provided with a pair of left and right upper side flanges 14 and 14, and the lower mold 11A includes Are provided with a pair of left and right lower side flanges 12, 12 (see FIG. 22). In addition, the half joint flange 16 is provided in the longitudinal direction both ends of 11 A of lower molds, and the upper mold 11B.

  The upper side flange 14 and the lower side flange 12 are fastened by a pair of left and right side flange fastening mechanisms 32 and 32 (see FIG. 21). These side flange fastening mechanisms 32, 32 are, as shown in FIG. 22, a pair of side flange fastening plates each having two hook-shaped arm portions (hook portions) 33a protruding from the lower surface portion of the lower side flange 12. 33 and 33, and a plurality of tightening force generating members 31 provided on the lower surface portion of the lower side flange 12 corresponding to the flange-shaped arm portion 33a of the side flange tightening plate 33, and the upper side In the flange 14 and the lower side flange 12, four slits 39 are formed at predetermined positions in order to project the saddle-shaped arm portion 33 a from the lower surface portion of the lower side flange 12.

  Further, the side flange fastening mechanisms 32, 32 slide the side flange fastening plates 33, 33 in the longitudinal direction of the upper mold 11B and the lower mold 11A so that the hooked arm portion 33a of the side flange fastening plate 33 is moved. A clamping plate slide mechanism 40 is provided to be engaged with a wedge surface 31a (see FIG. 23) formed on the clamping force generating member 31, and the wedge surface 31a generates a clamping force as shown in FIG. It is formed in a plate-like member 56 that is detachably provided with respect to the member 31. In this embodiment, the plate-like member 56 is attached to the fastening force generating member 31 by a plurality of set screws 57.

As shown in FIG. 24, the tightening plate slide mechanism 40 includes a tightening nut 41 provided at the center of the lower surface of the lower side flange 12, a tightening bolt 43 that is screwed into the tightening nut 41, The tightening bolt 43 has a tightening force transmission member 44 rotatably provided between the head 43a and the screw portion 43b. The upper side flange 14 and the lower side flange 12 include A through hole 42 for passing the fastening bolt 43 is formed. The tightening nut 41 is non-rotatably accommodated in a rectangular tube-shaped nut holder 58 fixed to the lower surface portion of the lower side flange 12.
The tightening plate slide mechanism 40 has two link members 46 connected to the side flange tightening plates 33 and 33 via connecting pins 45, respectively. The above-described tightening force transmission members 44 are connected via connecting pins 47, respectively.

  In the concrete product forming mold apparatus 50 configured as described above, when the tightening bolt 43 is screwed into the tightening nut 41 using a tightening tool such as a wrench, the head portion 43a and the thread portion of the tightening bolt 43 are provided. The clamping force transmission member 44 provided between the upper flange portion 43b and the upper flange portion 43b approaches the upper surface portion of the upper side flange 14, and accordingly, the side flange clamping plates 33, 33 are connected to one end side and the other end of the molds 11A, 11B. Slide to the side. When the tightening bolt 43 is further screwed into the tightening nut 41, the hook-shaped arm portion 33a of the side flange tightening plate 33 is engaged with the wedge surface 31a of the tightening force generating member 31 as shown in FIG. The upper side flange 14 and the lower side flange 12 are tightened by the flange tightening plate 33 by the tightening force generated at this time.

Therefore, in the above-described concrete product forming mold apparatus 50, a large number of bolts and nuts are not used when the upper side flange 14 and the lower side flange 12 are fastened. The upper side flange 14 and the lower side flange 12 can be firmly fastened.
Further, in the above-described mold apparatus 50 for forming a concrete product, the wedge surface 31a is formed on the plate-like member 56 that is detachably provided with respect to the tightening force generating member 31, so that the wedge surface 31a is worn. The shaped member 56 can be replaced with a new plate-like member, and the upper side flange 14 and the lower side flange 12 can be securely fastened.

FIG. 26 is a view for explaining the third embodiment of the present invention. The third embodiment is different from the second embodiment in that the fastening force generating member 31 is the length of the lower side flange 12. The holding member 59 is provided on the lower surface portion of the lower side flange 12 and the position adjusting screw 60 for adjusting the position of the wedge surface 31 a is provided on the holding member 59.
According to such a configuration, the position of the wedge surface 31a formed on the tightening force generating member 31 can be arbitrarily adjusted by the position adjusting feed screw 60, so that the hook-shaped arm portion 33a of the side flange tightening plate 33 is tightened. It can be reliably engaged with the wedge surface 31a of the force generating member 31, whereby the lower side flange 12 and the upper side flange 14 can be more firmly fastened.

It is a side view of an upper formwork and a lower formwork used when centrifugally molding a concrete product. It is a top view of the upper side formwork shown in FIG. It is sectional drawing which follows the III-III line of FIG. It is a top view which shows an example of the flange fastener used when fastening the side flange of an upper mold form and a lower mold form by the flange fastening method of the concrete product shaping | molding mold which concerns on this invention. It is a side view of the flange fastener shown in FIG. It is sectional drawing which follows the VI-VI line of FIG. It is a figure for demonstrating the flange fastening method of the mold for concrete product shaping | molding which concerns on this invention, (a) is a top view of the mold for concrete product shaping | molding, (b) is a side view of the mold for concrete product shaping | molding is there. It is sectional drawing which follows the VIII-VIII line of FIG. It is a figure for demonstrating the flange fastening method of the mold for concrete product shaping | molding which concerns on this invention, (a) shows the state which attached the flange fastener of FIG. 5 to the side flange of an upper mold and a lower mold. It is a side view, (b) is a top view which shows the state which attached the flange fastener of FIG. 5 to the side flange of an upper side formwork and a lower formwork. It is a figure for demonstrating the flange fastening method of the mold for concrete product shaping | molding which concerns on this invention, and is a top view which shows the state which has arrange | positioned the pusher between the two flange fasteners shown in FIG. It is a figure for demonstrating the flange fastening method of the mold for concrete product shaping | molding which concerns on this invention, and is a top view which shows the state which act | operated the pusher of FIG. It is sectional drawing which follows the XII-XII line | wire of FIG. It is sectional drawing which follows the XIII-XIII line | wire of FIG. 1 is a plan view of a concrete product forming mold apparatus according to a first embodiment of the present invention. It is a side view of the mold apparatus for concrete product shaping | molding shown in FIG. It is a side view which shows the principal part of the mold apparatus for concrete product shaping | molding which concerns on the 1st Embodiment of this invention. It is a side view which shows a part of formwork apparatus for concrete product shaping | molding which concerns on the 1st Embodiment of this invention. It is a top view which shows a part of formwork apparatus for concrete product shaping | molding which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating an effect | action of the mold apparatus for concrete product shaping | molding which concerns on the 1st Embodiment of this invention. It is a figure which shows the principal part of the mold apparatus for concrete product shaping | molding which concerns on the 2nd Embodiment of this invention. It is a top view of the mold apparatus for concrete product shaping | molding which concerns on the 3rd Embodiment of this invention. It is a side view of the mold apparatus for concrete product shaping | molding shown in FIG. It is a side view which shows a part of form apparatus for concrete product shaping | molding which concerns on the 3rd Embodiment of this invention. It is a side view which shows the principal part of the mold apparatus for concrete product shaping | molding which concerns on the 3rd Embodiment of this invention. It is a figure for demonstrating the effect | action of the mold apparatus for concrete product shaping | molding which concerns on the 3rd Embodiment of this invention. It is a figure which shows the principal part of the mold apparatus for concrete product shaping | molding which concerns on the 4th Embodiment of this invention.

Explanation of symbols

11A Lower mold 11B Upper mold 12 Lower side flange 14 Upper side flange 13 Fastener guide plate 15 Notch 16 Joint flange 21 Flange fastener 22 Fastener guide groove 23 Upper fastening surface 24 Wedge plate 25 Lower fastening Surface 26 Pusher 31 Tightening force generating member 31a Wedge surface 32 Side flange fastening mechanism 33 Side flange fastening plate 33a Vertical arm portion 35 Guide member 37 Coil spring 39 Slit 40 Tightening plate slide mechanism portion 41 Tightening nut 42 Through hole 43 Tightening bolt 44 Tightening force transmission member 46 Link member 45, 47 Connecting pin 56 Plate member 59 Holding member 60 Position adjusting screw

Claims (16)

A structure that fastens a pair of left and right side flanges provided on the upper and lower molds used when molding a concrete product, and is fastened to the lower surface of the side flanges provided on the lower molds The tool guide plate is fixed along the longitudinal direction of the lower mold, and a plurality of notches are provided in the side flange of the upper mold at intervals in the longitudinal direction of the upper mold, With a total of four flange fasteners having a plurality of wedge plates having a size that does not interfere with the notch, and a fastener guide groove that is slidably fitted to the plate. A flange fastening structure for a concrete product molding mold, wherein the side flanges of the lower mold and the upper mold are fastened to each other.   The flange fastening structure for a concrete product molding form according to claim 1, wherein a cross section of the fastener guide plate is formed in a trapezoidal shape.   3. The flange fastening structure for a concrete product molding form according to claim 1 or 2, wherein the flange fastener fastens a side flange of the upper mold form from above and a side flange of the lower mold form. A flange fastening structure for forming a concrete product mold, comprising: a lower fastening surface for fastening the material from below.   4. The concrete product according to claim 3, wherein the wedge plate is fixed to an upper fastening surface of the flange fastener, and the fastener guide groove is formed on a lower fastening surface of the flange fastener. Flange fastening structure for molding formwork.   A method of fastening a pair of left and right side flanges provided on an upper mold and a lower mold used when molding a concrete product, the upper clamping surface for fastening the side flanges of the upper mold from above A pusher is disposed between two flange fasteners having a lower fastening surface for fastening a side flange of the lower mold from below, and the flange fastener is attached to the upper mold and the lower mold by the pusher. A flange fastening method for a concrete product forming mold, wherein the side flange is fastened by sliding to one end side and the other end side.   6. The method for fastening a concrete product mold according to claim 5, wherein the side flange of the upper mold is fastened by a wedge plate provided on the upper fastening surface. Flange fastening method.   7. The method of fastening a flange for molding a concrete product according to claim 6, wherein the wedge plate is formed in a size that does not interfere with a notch formed in a side flange of the upper mold. Flange fastening method for forming mold.   8. A method for fastening a flange of a concrete product molding mold according to claim 5, wherein the lower mold frame guides the flange fastener in a longitudinal direction of the lower mold frame. On the lower surface of the side flange.   9. The flange fastening method for a concrete product forming mold according to claim 8, wherein a lower fastening surface of the flange fastener has a fastener guide groove that is slidably fitted to the fastener guide plate. The flange fastening method of the mold for forming concrete products.   The flange fastening method for a concrete product molding form according to claim 9, wherein the fastener guide groove has a trapezoidal cross section.   A concrete product molding upper mold having a pair of left and right upper side flanges, a concrete product molding lower mold having a pair of left and right lower side flanges on the lower side of the upper mold, the upper side flange and the A pair of side flange fastening mechanisms that fasten the lower side flange, and the side flange fastening mechanism passes through the slits formed in the upper side flange and the lower side flange and passes through the lower side flange. A pair of side flange fastening plates having hook-shaped arm portions protruding from the lower surface portion of the side flange, and a plurality of side flange fastening plates provided on the lower surface portion of the lower side flange corresponding to the hook-shaped arm portions of the side flange fastening plates. A tightening force generating member and the side flange tightening plate are connected to one end side in the longitudinal direction and the longitudinal direction of the upper side flange and the lower side flange. And a clamping plate slide mechanism that slides toward the end side and engages a hook-shaped arm portion of the side flange clamping plate with a wedge surface formed on the clamping force generating member. Forming equipment for molding concrete products.   12. The formwork apparatus for molding a concrete product according to claim 11, wherein the clamping plate slide mechanism is a clamping nut provided in a lower center portion of the lower side flange, and a through hole formed in the upper side flange. A fastening bolt that is inserted through the fastening nut and screwed into the fastening nut, a fastening force transmission member provided between a head portion and a threaded portion of the fastening bolt, the fastening force transmission member, and the pair A mold apparatus for molding a concrete product, comprising: a plurality of link members that connect the side flange fastening plates of the first through the connecting pins.   13. The concrete product forming mold apparatus according to claim 11 or 12, wherein a plurality of guide members for guiding the side flange fastening plate in a longitudinal direction of the upper mold form and the lower mold form are fastened to the side flange. A mold apparatus for molding a concrete product, characterized by having a mechanism.   14. The concrete product forming mold apparatus according to any one of claims 11 to 13, wherein the side flange fastening mechanism includes a flange fastening plate return spring for returning the flange fastening plate to a position before fastening the side flange. A mold apparatus for molding a concrete product, characterized by comprising:   15. The concrete product molding form apparatus according to any one of claims 11 to 14, wherein the wedge surface is formed on a plate-like member that is detachably provided with respect to the fastening force generating member. A formwork device for molding concrete products.   16. The concrete product molding apparatus according to claim 11, wherein a holding member that holds the tightening force generating member in a longitudinal direction of the lower side flange is movable in the lower side flange. A mold apparatus for molding a concrete product, wherein the holding member is provided with a position adjusting screw for adjusting the position of the wedge surface.

Images