JPH03114803A - Form assembly - Google Patents

Abstract

PURPOSE:To contrive to improve the workability of the form assembly concerned by a method wherein an upper movable inner mold and a lower movable inner mold are vertically movably and interlockingly connected with each other by a vertically mold moving means and a rightside movable inner mold and a leftside movable inner mold, which are opposite to each other, are horizontally movably and interlockingly connected with each other by a horizontally mold moving means. CONSTITUTION:By actuating a vertically mold moving means 6, an upper movable inner mold 2 and a lower movable inner mold 3 are simultaneously moved upwards and downwards respectively so as to set and hold the upper movable inner mold 2 and the lower movable inner mold 3 at their mold registering positions. After that, by actuating a horizontally mold moving means 7, a rightside movable inner mold 4 and a leftside movable inner mold 5 are simultaneously moved rightside outwards and leftside outward respectively so as to engage both their vertical ends with both the horizontal ends of the upper movable inner mold 2 and of the lower movable inner mold 3 in order to be registered and held at the mold registering positions of the rightside movable inner mold 4 and of the leftside movable inner mold 5. Thus, the inner molds can be smoothly drawn out of the hollow part of a formed article and the workability of the form assembly concerned can be improved.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a formwork device, for example, a medium mold for forming a hollow part of a concrete product such as a box culvert (prior art). Conventionally, as shown in FIGS. 3 and 4, this type of formwork apparatus has been used, for example, as shown in FIGS. 3 and 4. Medium C
and a left medium size d are arranged in a row so as to be movable in the left and right direction, and between the lower end connecting part e of the right side medium size C and the left medium size d, both left and right ends g of a lower medium size f horizontally arranged are connected to a plurality of bolts.・
Some have a structure in which they are removably connected by a nut h.

Then, as shown in Fig. 3, when molding the article, the right middle mold C
The right and left ends g of the lower middle die f are matched between the lower end connecting part e of the left middle die d, and these are connected to each other by a plurality of bolts and nuts h to form a core body i having a rectangular cross section as a whole. It is designed to be configured. In addition, when releasing the mold after molding the article, as shown in Fig. 4, the lower middle mold f is removed from between the lower end connecting part 0 of the right middle mold C and the left middle mold d, and the right middle mold C and the left middle mold d are moved inward. The molded article A is forcibly moved in the direction to be separated from the molding surface of the molded article A, and the respective movable parts are moved inward by the right middle mold C and the left middle mold d to be separated from the molding surface of the molded article A,
Therefore, the diameter of the core body i is reduced as a whole and the core body i is pulled out from the hollow part B of the molded article A.

(Problems to be Solved by the Invention) In the formwork device having the above structure, the lower medium form
There is a problem in that this requires a lot of effort because it has to be attached and detached.

In addition, since the right-hand medium mold C and the left-hand medium mold d are connected to the upper medium mold a via their respective movable parts, the mold release space between the left and right movable parts is extremely small, and the right-hand medium mold C and the left-hand medium mold d are connected to each other. There is a problem that unless the upper middle mold a is forcibly squeezed in the proximal direction, it is not possible to release the upper middle mold a, and therefore the core body i cannot be smoothly pulled out from the hollow part B of the molded article A. Therefore, the formwork apparatus having the above-mentioned structure has a problem that it is not preferable in terms of improving workability as a whole.

Therefore, the present invention was made in view of these problems, and it is possible to easily fit each mold body during molding, and to separate each mold body from the molding surface in a relatively large space when releasing the mold. Allows for easy release,
The object of this is to provide a formwork device that can smoothly pull out a molded article from the hollow part and greatly improve overall workability.

[Structure of the invention]

(Means for Solving the Problems) The formwork device of the invention of claim 1 comprises an upper movable middle mold and a lower movable middle mold which are disposed opposite to each other at the upper and lower parts and each has a molding surface on the outer side, and the upper movable middle mold. A movable upper and lower mold is connected between the middle mold and the lower movable middle mold, and holds the upper movable middle mold and the lower movable middle mold in the mold matching position when molding an article, and moves them inward in the proximal direction when releasing the mold after molding the article. means, a right movable middle mold and a left movable middle mold which are disposed opposite to each other on both the left and right sides and each having a molding surface on the outer side, and a right movable middle mold and a left movable middle mold which are connected between the right movable middle mold and the left movable middle mold. The present invention is equipped with a left-right movable means for aligning a movable middle mold with the upper movable middle mold and the lower movable middle mold when molding an article, and moving the movable middle mold inward in the proximal direction when releasing the mold after molding the article.

Further, in the formwork device of the invention of claim 2, in the formwork device of claim 1, both the left and right ends of the upper movable middle mold and the lower movable middle mold, and the upper and lower ends of the right movable middle mold and the left movable middle mold are provided for mold matching. Stoppers are formed at both ends of at least one of the upper and lower movable middle molds and at one end of the left and right movable middle molds opposite to both ends of the movable middle molds, and stoppers that move during mold fitting and mold release, respectively. A guide and a guide roller are provided facing each other.

(Function) In the formwork device of claim 1, when the molds are to be matched, when the upper and lower mold movable means is activated, the upper movable middle mold is moved upward and the lower movable middle mold is moved downward simultaneously by the upper and lower mold movable means. The upper movable middle mold and the lower movable middle mold are set and held at the mold matching position.

Next, when the left and right movable means is actuated, the right movable middle mold is simultaneously moved outward to the right side and the left movable middle die is moved outward to the left side by the left and right movable means, and the right movable middle die and the left movable middle die are brought to the mold matching position. The upper and lower end portions thereof are engaged with the left and right end portions of the upper movable middle mold and the lower movable middle mold, so that the molds are matched and held. The upper movable middle mold, the lower movable middle mold, the right movable middle mold, and the left movable middle mold, which are molded together, constitute a core body for molding the hollow part, and the outer peripheral surface of this core body is provided with each middle mold. The molding surfaces constitute a series of molding surfaces that mold the inner wall surface of the hollow portion.

Next, when releasing each medium mold, the left-right movable means is operated in the opposite direction to the direction when the molds are brought together, and the right-side movable middle mold moves inwardly to the left side, and the left-side movable middle mold moves to the right side. They are moved inward simultaneously, and both upper and lower ends of the right movable middle mold and the left movable middle mold are separated from both left and right ends of the upper movable middle mold and the lower movable middle mold, and are released inward.

Then, when the upper and lower mold movable means is operated in the opposite direction to the case of mold matching, the upper movable middle mold is moved downward and the lower movable middle mold is moved upward simultaneously by the upper and lower mold movable means. Since the movable middle mold is installed on the lower inner wall surface of the molded article, the upper movable middle mold is actually moved downward with respect to the lower movable middle mold.
The left and right end portions are lowered onto the upper ends of the right movable middle mold and the left movable middle mold and are released. Therefore, the matched core bodies are separated into independent molds by the inward movement of the upper, lower, left, and right middle molds, and a series of molding surfaces on the outer peripheral surface of the core bodies are small and independent. Separated.

In the formwork device according to claim 2, during the operation according to claim 1,
That is, when the molds are to be matched, the respective medium molds are automatically matched by the mutual engagement and locking of the respective stoppers at both the top, bottom, left and right ends of each medium mold, and a series of molding surfaces are formed on the outer peripheral surfaces thereof.

In addition, by the opposing guides and the guide rollers engaged with the guide rollers, at least one of the upper and lower movable middle molds and the left and right movable middle molds are reliably and smoothly matched, and the molds are reliably and smoothly released. be done.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

In Fig. 1, numeral 1 denotes a split-type core body for forming a hollow part of a concrete product with a rectangular cross section.
Upper and lower movable means 6 has an upper movable middle mold 2, a lower movable middle mold 3, a right movable middle mold 4 and a left movable middle mold 5 which are independent from each other, and the upper movable middle mold 2 and the lower movable middle mold 3 are connected in front and rear. The right movable middle mold 4 and the left movable middle mold 5 are provided with left and right movable means 7 which are connected to each other at the front and rear.

The upper movable middle mold 2 and the lower movable middle mold 3 each have a main body 8 having the same shape and extending in the front-back direction with a predetermined width, and the outer surface of the main body 8 has a horizontal molding. A surface 9 is formed, and molding portions 10 that are inclined inwardly at a predetermined angle of inclination are protruded from both ends of the main body 8 in the width direction. Further, as shown in FIG. 2, a molding surface 11 that is continuous with the molding surface 9 is formed on the outer surface of each of the mold joints 10 and slopes inward. A stopper 13 having an engagement step 12 on the inner side is protruded from the outer side of the tip. Further, reinforcing ribs 1 extending in the width direction at predetermined intervals are provided on the inner side of the main body 8 in the front-rear direction.
4 protrudes inward, and mountain-shaped guide recesses 15 are formed at both ends in the width direction of the reinforcing ribs 14 at the front and rear ends, and the guide recesses 15 at both ends of the reinforcing ribs 14 A guide 16 is formed on the outer edge of the guide 16 and is inclined to expand outward, and a locking edge 17 is formed on the inner edge of the guide recess 15 at both ends.

The right movable middle mold 4 and the left movable middle mold 5 each have a main body 18 having the same shape and extending in the front-rear direction with a predetermined width. A surface 19 is formed, and molding portions 20 that are inclined inward at a predetermined inclination angle are protruded from both ends of the main body 18 in the width direction, that is, both upper and lower ends. In addition, a molding surface 21 that is continuous with the molding surface 19 is formed on the outer side surface of each of the upper and lower molding portions 20, and an engaging step is formed on the outer surface of the inner tip of the molding portion 20. Stopper 2 with 22
3 is installed protrudingly. Further, reinforcing ribs 2 extending in the width direction at predetermined intervals are provided on the inner side of the main body 18 in the front-rear direction.
4 are provided to protrude inwardly, and a mountain-shaped protrusion 25 into the guide recess 15 is formed at both ends in the width direction of the reinforcing rib 24 at the front and rear ends, that is, at the upper and lower ends. A support shaft 27 is attached to the bracket 26 at the inner edge of the protrusion 25.
A guide roller 28 that engages with the guide 16 and the locking edge 17 via the guide roller 28 is rotatably mounted on an axis.

Further, the front and rear up-and-down type movable means 6 in which the upper movable middle mold 2 and the lower movable middle mold 3 are connected in front and rear parts includes a pantograph-type vertical movement mechanism 29 disposed at the lower part and an upper part of this vertical movement mechanism 29. The support frame 30 is arranged at the support frame 30. In the vertical movement mechanism 29, one end of a pair of upper and lower links 33 and 34 is rotatably attached to both ends of a movable plate 31 extending in the left-right direction via a support shaft 32. Connecting pieces 36 on the left and right sides of the lower movable medium 3 are rotatably connected to both ends of a lower horizontal rod 35 that is rotatably suspended horizontally between the other ends of the lower link 34. An upper horizontal rod 37 is rotatably suspended horizontally between the other ends of the links 33, and this upper horizontal rod 37 is connected to the support frame 30.
It is supported at the lower part of a horizontal support body 38 via left and right mounting pieces 39 . Further, the support frame 3o has vertical supports 40 erected parallel to the left and right upper portions of the horizontal supports 38, and supports connected to the upper ends of the left and right supports 4°. The upper movable middle mold 2 is connected to the upper part of the rod 41. Further, a threaded portion of an operating rod 42 is inserted and screwed into a screw hole (not shown) in the middle of the movable plate 31 in the front and rear vertical movement mechanism 29, and a handle (not shown) is attached to one end of the operating rod 42. ) is attached. By the rotation of the operating rod 42, the front and rear movable plates 31 are moved back and forth in the front and rear directions, and the vertical movement mechanism 29 is extended and contracted to move the support frame 30 up and down, and the upper movable middle plate 31 is moved forward and backward. 2
And the lower movable middle mold 3 is moved up and down.

Further, the front and rear left and right movable means 7 in which the right side movable middle size 4 and the left side movable middle size 5 are connected at the front and rear portions includes a pantograph type left and right movement mechanism 43 and a left and right movement mechanism 43 disposed at the upper and lower portions thereof. It is constituted by a guide support rod 44.

In the left-right movement mechanism 43, the inner ends of a pair of left and right links 47 and 48 are rotatably pivoted to both ends of a movable plate 45 extending in the vertical direction via a support shaft 46. The inner middle part of the right movable middle mold 4 and the left movable middle mold are attached to the outer ends of the left and right brackets 50 which are rotatably connected between the outer ends of the left and right upper and lower links 47 and 48 via a support shaft 49. The inner intermediate portions of the 5 are fixedly supported.

Further, the upper and lower guide rods 44 are connected to the left and right supports 4.
The right movable middle die 4 and the left movable middle die 5 are inserted into and supported within a horizontal guide body 51 protruding from the top, bottom, right and left sides of the 0, and the front and rear portions of the right movable middle die 4 and the left movable middle die 5 are inserted into and supported by horizontal guide bodies 51 protruding from the top, bottom, right and left sides of the 0. The upper and lower parts of the reinforcing ribs 24 are inserted and supported through guide holes 52 so as to be able to move forward and backward, and stoppers 53 are formed at the outer end portions of the upper and lower guide rods 44, so that the upper and lower parts of the guide bodies 51 are A stopper 54 is formed at the outer end. Also, the movable plate 4 in the front and rear left and right movement mechanism 43
A threaded portion of an operating rod 55 is inserted and screwed into a threaded hole (not shown) in the middle portion of the operating rod 5, and both ends of the operating rod 55 are rotatable between the support plates 56 of the front and rear support frames 30. A handle (not shown) is attached to one end of the operating rod 55. By rotating the operating rod 55, the front and rear movable plates 45 are moved back and forth in the front and rear directions, and the left and right movement mechanism 43 is extended and contracted to move to the right side via the upper and lower guide rods 44. The middle die 4 and the left movable middle die 5 are adapted to be moved left and right.

Next, the operation of the structure will be explained.

First, when matching the molds, when the operating rod 42 in the vertical movement mechanism 29 of the vertical mold movable means 6 is rotated by the handle, the front and rear movable plates 3 are rotated by this operating rod 42.
1 are pushed forward and backward, respectively, and a pair of upper and lower links 33 and 34 are rotated by the left and right support shafts 32 of the front and rear movable plates 31 and pushed upward and downward. The upper movable middle mold 2 is simultaneously moved upward via the upper horizontal rod 37 and the support frame 30, and the lower movable middle mold 3 is simultaneously moved downward via the lower horizontal rod 35. 3 is set and held at the mold matching position.

Next, when the operating rod 55 in the left-right moving mechanism 43 of the left-right movable means 7 is rotated by the handle, the front and rear movable plates 45 are pushed forward and backward, respectively, by the operating rod 55, and the front and rear movable plates 45 are pushed forward and backward, respectively. movable plate 4
The right and left and top and bottom links 47 are rotated by the upper and lower support shafts 46 of 5 and are pushed to the right and left sides. The right movable medium 4 is guided by upper and lower guide rods 44, and
The guide roller 28 is the guide 16 on the right side of the upper movable middle mold 2
The left movable middle die 5 is guided by the upper and lower guide supports 44, and the guide rollers 28 are guided by the outer guides 16 of the upper movable middle die 2 to move outward to the left. At the same time, the engaging steps 22 of the stopper 23 at the mold joining part 20 at the upper and lower ends of the right movable middle mold 4 are moved, and the engagement step part 22 of the stopper 23 at the mold joining part 10 at the right end of the upper movable middle mold 2 and the lower movable middle mold 3 is moved at the same time. In the engagement step portion 12,
Further, the engaging stepped portion 22 of the stopper 23 at the mold fitting portion 20 at the upper and lower ends of the left movable middle mold 5 is the engaging stepped portion of the stopper 13 at the left end portion of the upper movable middle mold 2 and the lower movable middle mold 3 at the mold joining portion 10. 12, respectively, are engaged and locked at the same time,
The right movable middle mold 4 and the left movable middle mold 5 are matched with the upper movable middle mold 2 and the lower movable middle mold 3 and are held.

A core body 1 is constituted by the upper movable middle mold 2, the lower movable middle mold 3, the right movable middle mold 4, and the left movable middle mold 5, which are molded together, and the outer peripheral surface of the core body 1 has each Medium size 2.3.4.5 molding surface 9゜1+, 19.2
A series of molding surfaces 57 for molding the inner wall surface of the hollow part by 1
is configured.

Next, when molding a box culvert, as is known, when the core body 1 is arranged and fixed in an outer mold body (not shown), a series of molding surfaces on the outer peripheral surface of the core body 1 are formed. 27 and a series of molding surfaces (not shown) on the inner peripheral surface of the outer mold body form a cavity (not shown) for molding the box culvert. Then, concrete is poured into this cavity to cure the box culvert A.

Next, when releasing each of the intermediate molds of the core body, the operating rod 55 of the left-right movement mechanism 43 of the left-right mold movable means 7 is rotated in the opposite direction to the above-mentioned mold matching with the handle. The front and rear movable plates 45 are operated by the operating rod 55.
are each pulled inwardly, and the right and left and upper and lower links 47 are rotated by the upper and lower support shafts 46 of the front and rear movable plates 45 to be pulled inwardly. and,
The right movable medium 4 is guided by upper and lower guide rods 44,
Moreover, the guide roller 28 is guided inward by the right guide 16 of the upper movable middle mold 2, and the left movable middle mold 5 is guided by the upper and lower guide supports 44, and the guide roller 28
are guided by the guides 16 on the outside of the upper movable middle mold 2 and moved inward at the same time, and the stoppers 23 at the upper and lower ends of the right movable middle mold 4 are the stoppers at the right end of the upper movable middle mold 2 and the lower movable middle mold 3. Along with being removed from 13,
The stopper 23 at the upper and lower ends of the left movable middle mold 5 is the same as the stopper 13 at the left end of the upper movable middle mold 2 and the lower movable middle mold 3.
The protrusions 25 at the upper and lower ends of the right movable middle mold 4 and the left movable middle mold 5 enter into the guide recesses ls at both left and right ends of the upper movable middle mold 2 and the lower movable middle mold 3. faced.

Next, when the operating rod 42 of the vertical moving mechanism 29 of the vertical movable means 6 is rotated by the handle in the opposite direction to the case of mold matching, the front and rear movable plates 31 are moved inward by the operating rod 42, respectively. At the same time, the pair of upper and lower links 33 and 34 are rotated by the left and right support shafts 32 of the front and rear movable plates 31, and the movable plate 31 is pulled inward. The upper movable medium 2 is the upper horizontal rod 37.
and downward via the support frame 30, and the lower movable middle die 3 is simultaneously moved upward via the lower horizontal rod 35, but at this time, the lower movable middle die 3 is moved onto the lower inner wall surface C of the box culvert A. Since it is in the installed state, the upper movable middle mold 2 is actually moved downward with respect to the lower movable middle mold 3, and the guide recesses 15 at both left and right ends of the upper movable middle mold 2 are connected to the right movable middle mold 4 and the left side. The movable middle mold 5 is lowered and locked onto the protrusion 25 at the upper end thereof, and its locking edge 17 is locked by the guide roller 28 to release the mold. Therefore, the upper movable middle mold 2 and the lower movable middle mold 3 are molded together.
, a core body 1 consisting of a right movable middle mold 4 and a left movable middle mold 5
are separated and released into independent states by the inward movement of the upper, lower, left and right medium molds 2, 3, 4.5, and the molding surface 9.11 of each medium mold 2, 3.4.5 is゜19,
21 is released from the inner wall surface C of the hollow part B of the box culvert A and separated into small pieces.
can be smoothly pulled out from inside the hollow part B of the box culvert A.

〔Effect of the invention〕

According to the invention of claim 1, the upper movable middle mold, the lower movable middle mold, the right movable middle mold, and the left movable middle mold are independent of each other, and the opposing upper movable middle mold and lower movable middle mold are moved up and down by the upper and lower mold moving means. In addition to freely interlocking and connecting,
The opposing right-side movable middle mold and left-side movable middle mold are interlocked and connected so that they can move left and right by the left-right moving means, so during molding, each movable middle mold is moved outward by the vertical-movable means and the left-right movable means. The movable middle molds can be easily combined to form a core body, and a series of molding surfaces for forming a cavity can be constructed. Also, when releasing the mold after molding an article, the upper and lower mold movable means and the left and right By moving each movable middle mold inwardly by the mold moving means, each movable middle mold can be easily separated independently, and its respective molding surface can be separated from the molding surface of the molded article by a relatively large space. Therefore, it is possible to provide a formwork device that can smoothly pull out the vertically and horizontally movable middle mold from the hollow part of the molded article, and can greatly improve the overall workability. can.

According to the invention of claim 2, by forming stoppers at both ends of each movable middle mold, it is possible to reliably fit each movable middle mold to the mold matching position during molding, and also to ensure that a series of molding surfaces are aligned. Since the guides and the guide rollers that engage with the guides are provided facing each other, it is possible to smoothly align and release the movable intermediate molds.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view showing the formwork device in a state where each movable middle mold has been released, and Fig. 2 is a partially enlarged front view showing the above molds in a state of mating. , FIG. 3 is a front view of the conventional molding apparatus, and FIG. 4 is a front view showing the same mold release state. 2. Upper movable medium size, 3. Lower movable medium size, 4. Right side movable medium size, 5. Left side movable medium size, 6. Vertical type movable means, 7. Left and right type movable means 13, 23. Stopper.
16...Guide, 28...Guide roller.

Claims (2)

[Claims] (1) An upper movable middle mold and a lower movable middle mold that are arranged opposite to the upper and lower parts and have molding surfaces on their outer sides, and the upper movable middle mold and the lower movable mold are connected between the upper movable middle mold and the lower movable middle mold. Upper and lower mold movable means are arranged to face the movable intermediate mold at the mold matching position during molding of the article and move inward in the proximal direction when releasing the mold after molding the article; A right side movable middle mold and a left side movable middle mold having molding surfaces, and a right side movable middle mold and a left side movable middle mold which are connected between the right side movable middle mold and the left side movable middle mold, are connected to the upper movable middle mold and the lower movable middle mold when molding an article. 1. A molding device comprising: left and right movable means for aligning the molds and for moving inward in a proximal direction when releasing the mold after molding an article. (2) Stoppers for mold matching are formed at both the left and right ends of the upper movable middle mold and the lower movable middle mold, and at the upper and lower ends of the right movable middle mold and the left movable middle mold, and at least one of the upper and lower movable middle molds is Guides and guide rollers for guiding movement during mold matching and mold release are provided opposite to each other at both ends and at one end of the left and right movable middle molds opposite to both ends of the movable middle mold. The formwork apparatus according to claim 1.