JPH07205130A - Clamping apparatus for concrete form - Google Patents

Abstract

PURPOSE:To improve operability and productivity by simply executing clamping and opening operations of one movable mold and the other movable mold matched to a stationary mold by a one-touch operation. CONSTITUTION:Clamping means 19 for clamping one movable mold 44 and the other movable mold 51 is provided. The means 19 has a rotor 23 vertically rotatably supported to a trestle 10. A supporting rod 29 is rotatably supported to the rotor 23. A support 31 for supporting the mold 44 matched to a stationary mold 16 is provided at a base end of the rod 29, and a clamper 36 for clamping and holding the mold 51 matched to the mold 16 is so supported to an end of the rod 29 as to be vertically rotatable. A plurality of the clampers 36 are provided. Each clamper 36 has clamping shafts 41, 61 detachably engaged and held with an engaging recess 56 of the other mold 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold clamping device for a concrete form, and relates to a mold clamping device for forming a concrete product.

[0002]

2. Description of the Related Art Conventionally, as a mold clamping device of this type of concrete formwork, for example, as shown in FIG. 7, a fixed mold body 2 for molding an end face portion of a concrete product is fixed to a pedestal 1 and fixed. A middle mold body 3 for molding the inner wall surface of the concrete product is arranged on the inner end portion of the mold body 2 to perform mold matching, and an outer wall surface of the concrete product is molded for the outer end portion of the fixed mold body 2. The fixed mold body 2, the middle mold body 3, and the outer mold body 4 are fixed to a plurality of nuts 6 fixed to the lower end portion of the middle mold body 3 by arranging the outer mold bodies 4 to mold. There is a structure in which a large number of bolts 5 in the left-right direction, which are arranged at the lower part of 2, are screwed onto each of them, and the mold is clamped by the large number of bolts 5 and nuts 6.

[0003]

In the above conventional structure,
In order to clamp the fixed mold body 2, the middle mold body 3 and the outer mold body 4 which are modeled with a plurality of bolts 5 and nuts 6, each bolt 5 is individually attached to a large number of nuts 6 for each mold clamping. Since it is necessary to fasten the mold, a large number of steps are required for the mold clamping operation, and similarly, at the time of mold opening, it is necessary to remove each bolt 5 individually for a large number of nuts 6, and thus a large number of steps are required for the mold opening operation. Therefore, there is a problem in that workability is poor and it is not preferable for improving productivity.

The present invention has been made in view of the above points, and the mold clamping operation and the mold opening operation can be easily performed by one-touch operation. Therefore, the workability is good and the productivity is greatly improved. An object of the present invention is to provide a mold clamping device for a concrete formwork that can be used.

[0005]

According to a first aspect of the present invention, there is provided a mold clamping device for a concrete formwork, a pedestal, a fixed mold body fixed to the cradle to mold an end face portion of a concrete product, and one of the fixed mold bodies. A first movable mold body that is fitted to a side portion to form one wall surface of the concrete product, and a first movable mold body that is fitted to the other side portion of the fixed mold body to form the other wall surface of the concrete product. A second movable mold body, and mold clamping means for clamping the first movable mold body and the second movable mold body that have been matched with each other, the mold clamping means being arranged on the pedestal in a vertical direction. Has a rotating body rotatably supported by the first rotating body, a supporting rod is rotatably supported by the rotating body, and the base end portion of the supporting rod is fitted to the fixed mold body. A support for supporting one of the movable mold body and the second movable mold body is provided. It is obtained by rotatably supported a clamping body for holding clamping the movable mold body of the other of the combined mold on the fixed body to the distal end of the supporting rod in the vertical direction.

According to a second aspect of the present invention, there is provided a concrete mold clamping apparatus according to the first aspect of the present invention, wherein the mold clamping means has upper and lower parts spaced apart from each other in the front-rear direction of the gantry. Having a plurality of rotating bodies rotatable in any direction, the supporting rods are rotatably supported by the rotating bodies, respectively, and one of the movable molds is fitted to the fixed mold body at the base end of each supporting rod. A support body for supporting the body is provided, and a tightening body for tightening and holding the other movable die body is pivotally supported in the up-down direction at the tip of each of the support rods. It is possible to work together on a common axis.

According to a third aspect of the present invention, there is provided a concrete mold clamping apparatus according to the first or second aspect of the present invention, wherein the clamping body has a support shaft in the front-rear direction at the tip of the support rod. Is rotatably supported in the up-down direction, and has a fastening shaft in the front-rear direction at a position separated from this fulcrum. The engaging recess for engaging and holding is formed.

[0008]

In the mold clamping device for concrete formwork according to claim 1, at the time of mold clamping, the first movable mold body for molding one wall surface of the concrete product is first fitted to one side of the fixed mold body. At the same time, the second movable mold body for molding the other wall surface of the concrete product is matched with the other side portion of the fixed mold body.

Next, when the rotating body on the pedestal is pulled by the supporting rod, the rotating body is pivoted upward about the support shaft, and the base end portion of the supporting rod pivotally supported by the rotating body. While the support body of is engaged with the engagement portion of one movable mold body,
When the tightening body at the tip of the support rod is rotated upward about the support shaft, this tightening body is engaged with the engaging portion of the other movable mold body and is supported by this tightening body. The rod is pulled toward the other movable mold body.

Then, when the tightening body is further strongly rotated toward the other movable mold body, one movable mold body is supported by the support body at the base end portion of the support rod with respect to one side portion of the fixed mold body. The mold is clamped and supported, and the other movable mold body is clamped and held to the other side part of the fixed mold body by the clamp body at the tip of the support rod.

Therefore, the one movable mold body and the other movable mold body, which are matched with the both sides of the fixed mold body by the support body and the tightening body of the support rod, can be easily and easily pressed with one touch through the fixed mold body. Hold tight.

Next, at the time of mold opening, when the tightening body of the support rod is rotated downward about the support shaft, this tightening body is disengaged from the engaging portion of the other movable mold body, and this tightening is performed. The support rod is pushed by the body toward one movable die body side, and the support body of this support rod is disengaged from the engaging portion of the one movable die body.

Therefore, the clamp holding of the one movable mold body and the other movable mold body, which are matched with each other on both sides of the fixed mold body, can be easily released with one touch. Then, the first movable mold body is released from one side portion of the fixed mold body, and the second movable mold body is released from the other side portion of the fixed mold body.

In the concrete mold clamping apparatus according to the second aspect of the present invention, at the time of mold clamping, each fastening body is simultaneously rotated in conjunction with a common shaft, and each fastening body has both side portions of the fixed mold body. The one movable mold body and the other movable mold body that have been matched with each other can be easily clamped and held with one touch.

Further, at the time of mold opening, when each tightening body is rotated in a direction opposite to that at the time of mold closing on the common shaft, the respective tightening bodies are simultaneously interlockedly rotated, and the respective tightening bodies are simultaneously rotated. Is disengaged from the engaging portion of the other movable mold body, and the clamp holding of the one movable mold body and the other movable mold body by the fastening bodies and the support bodies is easily released with one touch.

In the concrete mold clamping device according to the third aspect of the present invention, at the time of mold clamping, when the clamp body is rotated around the support shaft toward the engaging recess of the other movable mold body, the clamp body is rotated. The fastening shaft is engaged with and held in the engaging recess of the other movable mold body, and the one clamped body holds the one movable mold body and the other movable mold body.

When the clamp body is rotated around the support shaft in the direction of disengagement from the engaging recess of the other movable mold body at the time of mold opening, the clamp shaft of this clamp body is moved to the other movable mold body. It is disengaged from the engaging recess of the body, and the mold clamping holding of the one movable mold body and the other movable mold body is easily released.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 4,
Reference numeral 10 denotes a gantry, which has a gantry plate 11 supported by a plurality of frame members (not shown) such as steel, and a die support 12 is integrally fixed to an end of the gantry plate 11. . This mold support
Reference numeral 12 denotes a support base 13 having a U-shape in a side view, which is long in the front-rear direction, and a plate-shaped support frame long in the front-rear direction, which is arranged at a distance from the support base 13.
14 has a horizontal support piece 15 at the upper end of the support base 13.
On the upper end of the plate-like support frame 14, a fixed mold body 16 which is long in the front-rear direction and which molds the end face of the concrete product is horizontally fixed.

Further, between the lower end portions of the fixed mold body 16 in the left-right direction and the upper end portions of the support piece portion 15 and the plate-shaped support frame 14, the outer ends of the fixed mold body 16 in the left-right direction are provided. The packings 17 protruding in one direction are fixed to each other. Further, the vertical portion of the support base 13 and the plate-like support frame 14 are provided with a plurality of vertically long guide grooves 18 which communicate with each other at predetermined intervals in the front-rear direction. Communication is formed.

Further, the guide grooves are formed on the base plate 11.
Mold clamping means 19 is disposed and fixed at a position corresponding to 18. Each of the mold clamping means 19 has a substantially U-shaped bracket 20 fixed to the gantry plate 11, and front and rear support pieces 21 which project upward in a relative manner in the front-rear direction of each bracket 20. In between, a rotating body 23 is pivotally supported by a support shaft 22 in the front-rear direction so as to be vertically rotatable.

Each of the rotating bodies 23 has a substantially triangular front and rear rotating plate 24 rotatably supported by the support shaft 22, and one side edge portion of the front and rear rotating plates 24 is An abutting part that abuts and is supported on the gantry plate 11 when the front and rear turning plates 24 are turned down.
25 are formed. Further, an interlocking body 28 having an insertion hole 27 penetrating in the left-right direction by a support shaft 26 is pivotally supported vertically between the upper ends of the front and rear rotating plates 24.

The guide grooves 18 are formed in the interlocking bodies 28.
The base ends of the support rods 29, which are vertically movably inserted therein and are long in the left-right direction, are connected to each other so that the positions thereof can be adjusted in the left-right direction. The base end portion of each support rod 29 is formed as a screw rod portion 30 having a screw on the outer periphery, and each screw rod portion 30 is inserted into the insertion hole 27 of each interlocking body 28 so as to be able to advance and retreat. Located on the right side of the interlocking body 28, a nut-shaped support body 31 is screwed to each of the screw rods 30 so as to be axially positionally adjustable by rotation, and is positioned on the left side of each interlocking body 28. A lock nut 32 for locking the set position of the support 31 is screwed onto each of the screw rods 30.

One end of a support plate 33 is integrally fixed to the lower end of each of the support rods 29 projecting outward from the guide grooves 18 of the die support 12. A support protrusion 34 formed on the other end of the support plate 33 so as to protrude upward.
A fastening body 36 is pivotally supported by a support shaft 35 in the front-rear direction so as to be vertically rotatable.

In each of the tightening bodies 36, front and rear side plates 37 and front and rear side plates 37, which are arranged to face each other at a predetermined interval with the support protrusion 34 interposed therebetween, are integrally formed. It is formed in a substantially U-shape having a connecting portion 38 continuously provided. In addition, a guide recess 39 is formed between the front and rear side plates 37 so as to fit up and down with respect to the support plate 33. And, one end of the front and rear side plates 37 is a support shaft of the support protrusion 34.
It is rotatably supported at 35.

The horizontal portion 40 of the support plate 33 located below the support projection 34 is located between the other ends of the front and rear side plates 37.
A tightening shaft 41 in the front-rear direction that is up-and-down pivoted and disengaged with respect to the front-rear direction is fixed in a horizontal shape. have. Then, when the tightening bodies 36 are pivotally rotated so as to be fitted to the respective support plates 33 about the respective support shafts 35, the intermediate portions of the respective tightening shafts 41 are supported by the support plates. By being engaged with the horizontal portion 40 of 33, each tightening shaft 41 is positioned below the position of each support shaft 35, and each tightening body 36 moves outwardly about each support shaft 35. It is designed so that it cannot be turned up toward.

Each tightening body 36 is a support shaft.
It is normally rotated downward about 35, and one end of the connecting portion 38 of each tightening body 36 is supported by abutting against the outer lower part of the support projection 34 of the support plate 33, and each tightening thereof. Axis 41
Is located outside the support shaft 35 to prepare for tightening. Further, the tip end portions of the support rods 29 are always supported by the lower end portions of the guide grooves 18 outside the die support 12.

Next, a plurality of guide rails 42, which are long in the left-right direction and are arranged in parallel at predetermined intervals in the front-rear direction, are fixed to the lower portion of the gantry 10.

Further, a first movable mold body 44 having a molding plate 43 for molding one wall surface of the concrete product is arranged on the upper part of the gantry plate 11, and the first movable mold body 44 is formed by each of the above-mentioned each. It is supported by a support mechanism 46 having a plurality of guide rollers 45 engaged with the guide rails 42, and is provided so as to be movable back and forth with respect to one side portion of the fixed mold body 16, that is, one end portion in the left-right direction.

The first movable mold body 44 has a reinforcing frame body 47 composed of a plurality of reinforcing plates for reinforcing and supporting the molding plate 43,
Engaging bodies 48 are integrally fixed to the lower end of the reinforcing frame 47 at predetermined intervals in the front-rear direction.
A plurality of vertical guide grooves 49 communicating with the guide grooves 18 are formed at the lower end of the molding plate 43 and the lower end of the molding plate 43 at predetermined intervals in the front-rear direction.

Then, the support 31 of each mold clamping means 19 is brought into contact with the opening edge of each guide groove 49, and the first movable mold 44 is fixed to the fixed mold by each support 31. The body 16 is pushed toward one end thereof, and the lower end of the molding plate 43 is clamped to the one end of the fixed mold body 16. Then, in a state where the abutting portion 25 of the rotating body 23 of each mold clamping means 19 is abutted and supported on the gantry 10, the first movable mold body 44 is passed over each mold clamping means 19. Is a fixed body 16
It is designed to be moved to the opposite side.

Next, a second movable mold body 51 having a molding plate 50 located above the gantry plate 11 for molding the other wall surface of the concrete product is provided, and the second movable mold body 51 is provided. 51 is supported by a support mechanism 53 having a plurality of guide rollers 52 engaged with the respective guide rails 42, and is fixed to the fixed mold body.
It is provided so that it can move back and forth with respect to the other end of 16.

The second movable mold body 51 has a reinforcing frame body 54 composed of the molding plate 50 and a plurality of reinforcing plates 54a which reinforce the molding plate 50. Further, the second movable mold body 51 is located at the lower end portion of the mold clamping means 19 at a position corresponding to the clamp body 36, and is clamped to the reinforcing plate 54b at the lower end portion of the reinforcing frame body 54. A plurality of sets of engagement plates 55, each of which is a pair of left and right, are integrally provided so as to project downward and outward at intervals with the body 36 interposed therebetween. Engagement recesses 56 are formed in the engaging bodies 41a of the fastening shaft 41 of the fastening body 36 so as to engage with and disengage from the engaging shaft portions 41a by rotating from the rear.

Further, the support mechanism 53 is formed by having a frame body 57 on which the plurality of guide rollers 52 are rotatably mounted and a plurality of brackets 58 standing on the frame body 57 in the front-rear direction. ing. Further, the second movable mold body 51 is vertically fixed and supported on the upper portions of the plurality of brackets 58. Then, the second movable mold body 51 is supported by the support mechanism 53.
Is fitted to the other end of the fixed mold body 16, and the second movable mold body 51 is molded to the other end portion of the fixed mold body 16 by each clamping body 36 of each mold clamping means 19. It is supposed to be tightened.

Next, the operation of the above embodiment will be described.

First, during mold clamping, the first movable mold body 44 is moved toward one side of the fixed mold body 16, and the lower end of the molding plate 43 of the first movable mold body 44 is fixed to the fixed mold body. Match to one side of 16. Further, the second movable mold body 51 is moved toward the other side portion of the fixed mold body 16 and
The lower end of the molding plate 50 of the movable mold body 51 is matched with the other side portion of the fixed mold body 16.

Next, when the support rods 29 of the respective mold clamping means 19 are pulled toward the second movable mold body 51 side, the respective rotary members 23 of the respective support rods 29 move the support shaft 22 of the bracket 20. While being erected and rotated about the center, the base ends of the support rods 29 are lifted and rotated about the support shafts 26 of the rotating bodies 23. Each of the support rods 29 is brought close to the upper portion of the left and right guide grooves 18 of the die support 12 and the upper portion of the guide groove 49 of the lower end portion of the first movable die body 44. Each support 31 at the base end is engaged with the opening edge of the guide groove 49 of each engaging body 48 fixed to the lower end of the first movable mold body 44 in a slightly inclined state.

Further, each tightening body 36 pivotally supported on the support plate 33 at the tip of each supporting rod 29 is rotated upward about the support shaft 35, and each tightening body 36 is moved to the second position. Movable body 51
When turned toward, the engaging shaft portions 41a at both ends of each tightening shaft 41 fixed to each tightening body 36 are engaged with the engaging recesses of the pair of engaging plates 55 of each second movable mold body 51. 56 respectively engaged.

Further, when each tightening body 36 is rotated more strongly about the support shaft 35 toward the second movable mold body 51 side, each support rod 29 is moved to the second movable mold body 51 side. The support rods 29 are further pulled toward the movable mold body 51, and the respective support rods 29 are respectively provided at the upper end portions of the left and right guide grooves 18 of the mold support body 12 and the upper end portions of the guide grooves 49 at the lower end portion of the first movable mold body 44. The support 31 is engaged and becomes horizontal, and each support 31 at the base end of each support rod 29 is in surface contact with the opening edge of the guide groove 49 of each engagement body 48 of the first movable mold body 44. Further, the engaging shaft portions 41a at both ends of each tightening shaft 41 of each tightening body 36 are engaged, and each pair of engaging plates of the second movable mold body 51 is paired.
The engaging recesses 56 of 55 are engaged deeply with each other, and the intermediate portions of the tightening shafts 41 are engaged with the horizontal portions 40 of the support plate 33 to lock the rotation of the tightening bodies 36. .

Then, a support body at the base end of each of the support rods 29
At 31, the lower end of the molding plate 43 of the first movable mold body 44 is a fixed mold body.
16 is clamped and supported on one side portion, and the lower end of the molding plate 50 of the second movable mold body 51 is fixed to the fixed mold body 16 by each clamp body 36 at the tip of each support rod 29. The mold is clamped and held to the other side portion.

Accordingly, the lower end portion of the molding plate 43 of the first movable mold body 44 and the first movable mold body 44, which are fitted to the both sides of the fixed mold body 16 by the respective support bodies 31 and the respective fastening bodies 36 of the respective support rods 29, 2 movable bodies
The lower end of the molding plate 50 of 51 is easily clamped and held through the fixed mold body 16 with one touch. The lower ends of the molding plate 43 of the first movable mold body 44 and the molding plate 50 of the second movable mold body 51 are watertightly closed and held by the packings 17 on both sides of the fixed mold body 16. .

Further, front and rear end plates (not shown) are arranged in a watertight manner at the front and rear ends of the fixed mold body 16, the molding plate 43 of the first movable mold body 44 and the molding plate 50 of the second movable mold body 51, respectively. By fixing, the fixed mold body 16, the first movable mold body 44, the second movable mold body 51, and the front and rear end plates form a cavity A.

Then, by concretely pouring and curing the concrete in the cavity A, the end surface portion of the concrete product is molded by the fixed mold body 16, and the molded plate 43 of the first movable mold body 44 is formed. Thus, one wall surface of the concrete product is molded, and the molding plate 50 of the second movable mold body 51 molds the other wall surface of the concrete product.

Next, when the mold is opened, the tightening bodies 36 of the respective support rods 29 are rotated downward about the support shafts 35, and the respective tightening shafts 41 of the respective tightening bodies 36 are moved to the second position. Movable body
Each pair of engaging plates 51 of 51 is disengaged from the engaging recesses 56 of the pair of engaging plates 55, and each supporting rod 29 is attached to the first movable mold member 44 by each tightening member 36.
The supporting bodies 31 of the supporting rods 29 are disengaged from the engaging bodies 48 of the first movable mold body 44 while being downwardly rotated about the support shafts 26 of the rotating bodies 23 toward the side.

Further, the rotating bodies 23 are respectively rotated downwardly around the support shafts 22 by the supporting rods 29, and the rotating bodies 23 are rotated.
23 is returned and rotated below the engaging body 48 of the first movable mold body 44, and the abutting portions 25 of the respective rotating bodies 23 are abutted and supported on the gantry plate 11.

Therefore, the mold clamping holding of the first movable mold body 44 and the second movable mold body 51, which are matched with each other on both sides of the fixed mold body 16, can be easily released with one touch. Then, the front and rear gable plates are released from one side of the fixed mold body 16 to the first movable mold body.
The mold 44 is released, and the second movable mold 51 is released from the other side of the fixed mold 16.

Then, by moving the first movable mold body 44 in a direction in which the first movable mold body 44 gets over each tightening means 19 and moves away from one side portion of the fixed mold body 16, the first movable mold body 44 is moved. And the one side part of the fixed mold body 16 are largely opened, whereby the cleaning between the first movable mold body 44 and the fixed mold body 16 and the molding plate 43 of the first movable mold body 44 with respect to the molding plate 43. The work of applying the release agent can be easily performed.

Next, in the above-mentioned embodiment, the base plate of the base 10.
Each clamping body 36 of the plurality of mold clamping means 19 arranged at a predetermined interval in the front-rear direction of 11 with respect to the engaging recesses 56 of each pair of engaging plates 55 of the second movable mold body 51. A case has been described in which the support shafts 35 are individually rotated to be engaged and disengageably engaged, but the present invention is not limited to this, and a plurality of tightening bodies 36 are connected so that they can be interlocked by a common shaft. You may do it.

In this case, for example, as shown in FIGS. 5 and 6, the supporting projections of the supporting plates 33 of the plurality of mold clamping means 19 are provided.
One common support shaft 60, which is long in the front-rear direction, is inserted between and supported by 34, and a plurality of tightening bodies 36 are respectively supported by the support shafts 60 on the respective support projections 34 as in the case of the above embodiment. Is rotatably supported in the vertical direction, and the other end portions of the plurality of tightening bodies 36 are interlockingly connected by a single tightening shaft 61 long in the front-rear direction.

Then, from the protruding end portion 61a of the tightening shaft 61 protruding outward from the side plate 37 located on the outer side of the plurality of tightening bodies 36 and the side plate 37 located on the inner side of the plurality of tightening bodies 36. The protruding portion 61b that protrudes inward is an engaging portion that engages with and disengageably engages with the engaging recesses 56 of the pair of engaging plates 55 of each set of the second movable mold body 51.

With this structure, each tightening body is
36 can rotate vertically about the common support shaft 60 at the same time, and each tightening body 36 can rotate up and down at the same time by the common tightening shaft 61. By engaging and disengaging both the projecting end portions 61a and the projecting portions 61b on both sides of the common tightening shaft 61 with respect to the engaging concave portions 56 of the pair of engaging plates 55 of the second movable mold body 51, The mold clamping operation and the mold opening operation of the first movable mold body 44 and the second movable mold body 51 with respect to both side portions of the fixed mold body 16 can be easily performed.

If necessary, each support rod 29 or each support plate 33 of each mold clamping means 19 may be connected by a common interlocking rod. Further, in the embodiment shown in FIGS. 5 and 6, a pair of engaging plates 55 having engaging recesses 56 are arranged and fixed at both ends of the second movable mold body 51 in the front-rear direction, while the front and rear parts of the gantry plate 11 are fixed. The mold clamping means 19 is disposed and fixed at both ends in the direction, and the common clamping shaft 61 of the clamping body 36 of the mold clamping means 19 is provided at both ends of the engaging recesses 56 of the pair of engaging plates 55 at the both ends. Although the case where the first movable mold body 44 and the second movable mold body 44 are engaged and disengaged is illustrated,
Depending on the length of the movable mold body 51 in the front-rear direction, a plurality of pairs of the engaging plates 55 and the tightening body 36 may be arranged in the intermediate portion thereof.

In the above embodiment, the first movable mold body 44 moves straight forward and backward toward one side of the fixed mold body 16 to align with the one side of the fixed mold body 16. Although the case has been described, when the first movable mold body 44 is the middle mold body and the second movable mold body 51 is the outer mold body, the first movable mold body is the first movable mold body. The mold body 44 may be opened and closed by an arc motion with respect to one side portion (inner end portion) of the fixed mold body 16.

Also in this case, the first movable mold body 44 and the other side part (outer end) of the fixed mold body 16 matched with one side part (inner end part) of the fixed mold body 16 as in the case of the above embodiment. The second movable mold body 51 matched with the part) can be easily clamped and opened by one mold by each mold clamping means 19.

Further, in the above embodiment, the first movable mold body is used.
The support bodies 31 of the mold clamping means 19 are engaged with the engaging bodies 48 of 44, and the clamping bodies 36 of the mold clamping means 19 are engaged with the pair of engaging plates 55 of the second movable mold body 51. Although the case where the molds are clamped together is described, the present invention is not limited to this, and the respective support members 31 of the mold clamping means 19 are engaged with the engaging portions of the second movable mold body 51, and
The mold clamping may be performed by engaging the respective clamping bodies 36 of the respective mold clamping means 19 with the engaging portions of the movable mold body 44.

[0056]

According to the first aspect of the present invention, the mold clamping means rotatably supports the supporting rod on the rotating body which is rotatably supported on the pedestal in the vertical direction, and the base of the supporting rod is supported. A support for supporting one movable mold body fitted to the fixed mold body is provided at the end portion, and the other movable mold body fitted to the fixed mold body is clamped and held at the tip of the supporting rod. Since the body is rotatably supported in the vertical direction, by operating this mold clamping means, the mold clamping operation and the mold opening operation of one movable mold body and the other movable mold body that are matched with the fixed mold body are performed. Can be easily performed with one touch, and the operability of mold clamping and mold opening can be greatly improved compared to the one in which one movable mold body and the other movable mold body are subjected to a large number of bolts and nuts.
Therefore, workability is good and productivity can be improved.

According to the second aspect of the present invention, since the plurality of tightening bodies can be interlocked with each other by the common shaft, the plurality of tightening bodies can be simultaneously rotated, and the mold can be aligned with the fixed mold body. The one movable mold body and the other movable mold body can be securely clamped at a plurality of locations at the same time with one touch, and,
The molds can be clamped at a plurality of positions simultaneously and easily.

According to the third aspect of the invention, the tightening body is rotatably supported in the up-and-down direction on the front end portion of the support rod by the support shaft in the front-rear direction, and the front-rear position is separated from the support shaft. Direction has a tightening shaft, and the other movable mold body is formed with an engaging recess for engaging and retaining the tightening shaft in a disengageable manner. By engaging and holding the clamping shaft of the body, the one movable mold body and the other movable mold body, which are matched with the fixed mold body, can be securely clamped and held by a simple configuration.

[Brief description of drawings]

FIG. 1 is a front view in which a part of a mold clamping device for a concrete formwork is cut away, showing an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view showing the same mold clamping state.

FIG. 3 is an explanatory perspective view showing a relationship between the same tightening body and an engaging plate.

FIG. 4 is a partially cutaway front view showing the same mold clamping state.

FIG. 5 is a perspective view showing a mold clamping mechanism portion showing another embodiment.

FIG. 6 is a perspective view showing a mold clamped state of the same.

FIG. 7 is a front view in which a part of a conventional mold clamping device is cut away.

[Explanation of symbols]

 10 Stand 16 Fixed type body 19 Mold clamping means 23 Rotating body 29 Support rod 31 Support body 35,60 Support shaft 36 Clamping body 41,61 Clamping shaft 44 First movable mold body 51 Second movable mold body

Claims (3)

[Claims] 1. A pedestal, a fixed mold body fixed to the pedestal to mold an end face portion of a concrete product, and one side surface of the fixed mold body to be molded to form one wall surface of the concrete product. A first movable mold body, a second movable mold body that is molded on the other side of the fixed mold body to mold the other wall surface of the concrete product, and the first movable mold body that is modeled A mold clamping means for clamping the body and the second movable mold body is provided, and the mold clamping means has a rotating body pivotally supported on the mount in a vertically rotatable manner. One of the first movable mold body and the second movable mold body, in which a supporting rod is rotatably supported by a shaft, and the base end portion of the supporting rod is matched with the fixed mold body. A support body for supporting the fixed mold body is provided at the tip of the support rod. Mold clamping device of concrete form, characterized in that the rotatably supported a clamping body in the vertical direction for holding clamping the mold body. 2. The mold clamping means has a plurality of rotating bodies which are arranged in the front-rear direction of the gantry and are spaced apart from each other and which are rotatable in the up-down direction.
A support rod is rotatably supported on each of the rotating bodies, and a support body for supporting one movable mold body matched with the fixed mold body is provided at the base end portion of each of the support rods. A fastening body for fastening and holding the other movable mold body is pivotally supported at the tip of the rod so as to be vertically rotatable, and the fastening bodies can be interlocked by a common shaft. The mold clamping device for the concrete formwork according to claim 1. 3. The tightening body is rotatably supported in the up-down direction by a support shaft in the front-rear direction at the tip of the support rod, and is tightened in the front-rear direction at a position separated from the support shaft. The mold clamping device for a concrete formwork according to claim 1 or 2, further comprising a shaft, and an engaging recess for engaging and retaining the tightening shaft in a detachable manner is formed on the other movable mold body. .