JPH0834018A - Molding device for top end of formwork for producing culvert block - Google Patents

Abstract

PURPOSE:To easily automate a production line and to contrive labor saving and shortening of time in the demolding and placing processes by providing an elevating/lowering base in which the opening part of the nested boxes of a cap hanging part is bored and superposing a top end-molding plate and connecting a second elevating/lowering mechanism to the nested boxes of the cap handing part and connecting the nested boxes of the opening part to a third elevating/lowering mechanism. CONSTITUTION:In a time for placing a culvert block, a top end-molding plate 90 is set up in an arbitrary height and slope by the first elevating/lowering mechanisms 150, 150'. Thereafter, when a second elevating/lowering mechanism 200 is opened, the nested boxes 70 of a cap hanging part are projected from the opening part 80 of the top end-molding plate 90. When the nested boxes 110 of an opening part are raised by a third elevating/lowering mechanism 300, the nested boxes 110 of the opening part are allowed to abut on the base of a core 30 while sliding in the nested boxes 70 of the cap hanging part. The space for forming both the cap hanging part of a product and the opening part is formed in a formwork KS. When the formwork KS is closed, immediate placing and setting are enabled. In a time of demolding, the front side board 20 and both side boards are opened and a clearance is provided in the rear side board 25 and the core 30 is reduced and the cap hanging part 70 is lowered. Demolding is easily performed by attracting the bottom part of the culvert block through the vacuum pad of de-molding and nearly lifting the culvert block.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] A crown molding device used for a mold for the production of an underdrain block that has a variable ceiling slope and crown thickness (height) and an opening for a lid. It is possible to make a formwork for underdrain block manufacturing that facilitates automation of the line and saves labor.

[0002]

2. Description of the Related Art Although there is no particular order, a conventional underdrain block B having a lid opening at a top end will be described with reference to FIG. 9, and a conventional form K for manufacturing the underdrain block B will be described with reference to FIG.
The nest IL that forms the opening for hanging the lid will be described.

FIG. 9 (a) is a perspective view of a conventional underdrain block, and the underdrain block B shown in the figure is a hollow portion (running water portion).
4 and the bottom surface 5 is a general-purpose article provided with an opening ka having a lid hooking portion f for mounting a lid or grating in the central portion of the top end 1 parallel to the top end 1 as shown in the schematic construction diagram shown in FIG. 9B. When installed in parallel with the road slope, the road slope 6 and the waterway slope 7 are of course the same slope, and when water is run to the side opposite to the road slope 6, deposits of deposits and the like increase, and the road slope 6 that has recently been requested. Cannot meet the design condition when the waterway gradient 7 is different. Reference numeral 8 in the figure is a foundation work for installing the underdrain block.

FIG. 10 is an explanatory view of a nest IL forming an opening of a conventional mold K, in which a lid hooking part f and an opening ka are formed on a bottom surface T on an underframe D of the mold K. Fix the nest IL,
When placing concrete (putting concrete into the form) and removing from the mold (when taking out the cured product from the form), the core N of the form K is reduced to the center from the underdrain block B. After pulling out the child N and opening the front / rear gable plates F and R and the both side plates S, the underdrain block B is lifted and the nesting IL is left on the bottom surface T of the form K and is demolded upward.

In the case of the conventional mold K equipped with the nesting IL, if the horizontal state is slightly changed when hoisting the underdrain block B at the time of demolding, the strength of concrete immediately after curing is still low, so that the lid hooking part is not used. In many cases, the area around the opening is damaged and repair of the same part is required after demolding, so it requires expert skill for demolding work, and it is necessary to attach the core N that is in close contact with the insert IL when assembling the mold. Since it is complicated and it is difficult to automate the process of demolding the mold (including opening the form) and placing (including assembling the form), it is possible to improve the top end molding device that replaces the insert IL of the manufacturing form. It was requested.

[0006]

The drawbacks of the prior art are eliminated, an opening for the lid is provided, and the top end slope and the top end thickness, which could not be achieved in the past, can be freely selected, and automation of the production line is possible. (EN) Provided is a top end forming device for a mold for producing an underdrain block, which is easy and saves labor and time in a demolding / placing process.

[0007]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, an underdrain block having a variable top slope and a variable top thickness and provided with an opening for a lid is manufactured upside down. A top end molding device for a formwork for producing an underdrain block, which comprises an underframe 5
0 is provided with two sets of independently operable first elevating mechanisms 150 and 150 ′ on the front side and the rear side, and the upper connecting shaft 160 of the first elevating mechanisms 150 and 150 ′ is attached to the lid hooking part. Nest 7
0 is slidably inserted into the long holes 66 below both ends of the elevating base 60 having an opening 65 into which the product can be loosely inserted, and the elevating base 60 is swingably and vertically movable. The upper end forming plate 90, which is formed and provided with an opening 80 through which the lid hooking member insert 70 is sealed and slidable, can be attached to the lifting base 6.
A second elevating mechanism 2 composed of two sets of elevators which are superposed on each other at a predetermined interval and overlapped with each other and which can be operated synchronously on the elevating base 60.
00, and the upper connecting shaft 277 of the second lifting mechanism 200.
Is connected to a connecting hole 77 on the lower side of the lid hook portion insert 70, and the opening portion insert 110 is sealed and slidably inserted into the inside of the lid hook portion insert 70. Is connected to the upper connecting shaft 311 of the third elevating mechanism 300 provided in the vicinity of the central portion of the underframe 50, thereby forming a top end forming apparatus for the underdrain block manufacturing formwork. .

Further, in the second aspect, the two sets of first elevating mechanisms 150, 150 'are link mechanisms for converting the rotational movement of the screw rod 152 into vertical movement, and the front and rear portions are supported on the base 150B. The base 150 is rotated by the rotation of the screw rod 152.
The lower part of the long link 156 is axially attached to both sides of the slide nut 159 which can slide back and forth on B, and the upper part of the short link 155 having a half length of the long link 156 is connected to the middle part of the long link 156. , The lower portion of the short link 155 to the rear bearing 159
The top end forming device for a frame for producing an underdrain block according to claim 1, which is provided by axially attaching to both ends.

Further, in claim 3, the second elevating mechanism 200
Is a drive elevator 200A including a link mechanism that converts the rotational movement of the screw rod 202 into vertical movement, and the drive elevator 20A.
A lifting mechanism including a driven elevator 200B including a link mechanism that is driven by a connecting link 290 coupled to the 0A. The driving elevator 200A is configured to rotate the screw rod 202 that supports front and rear portions on the lifting base 60. 6
The lower part of the long link 207 is axially attached to both sides of the slide nut 210 which is slidable back and forth on the upper part, and the upper part of the short link 206 having a half length of the long link 207 is connected to the middle part of the long link 207. The lower part of the short link 206 is provided with a rear bearing 208.
The driven elevator 200B is mounted on both ends by shafts, and the driven elevator 200B inserts a slider 285 slidable back and forth on the base 60 onto a guide shaft 230 fixed to the front / rear fixed portions 228, 238 on the lift base 60. 3. The lower part of the long link 207 is axially attached to both sides of the slider 285, and the slide nut 210 of the driving elevator 200A and the slider 285 are connected by a connecting link 290.
It constitutes a top end molding device of the formwork for producing the underdrain block according to any one of the items.

Further, in claim 4, the third elevating mechanism 300
Is a link mechanism for converting the rotational movement of the screw rod 302 into vertical movement. The screw rod 302, which supports the front portion, the intermediate portion, and the rear portion on the underframe 50, has opposite phases on the front side and the rear side, respectively. The slide nuts 359 and 359 'which are slidable back and forth on the underframe 50 are screw-fitted to the respective screwed portions, and the slide nuts 359 and the lower portions of the long links 306 are provided on both sides of the slide nuts 359'. Is attached to the middle portion of the long link 306, the upper portion of the short link 305 having a length of ½ of the long link 306 is connected, and the lower portion of the short link 305 is attached to both ends of the intermediate bearing 309. The invention according to any one of claims 1 to 3, characterized in that
It constitutes the top end forming device of the form for producing the underdrain block described in the item.

Further, in claim 5, when the concrete is vibrated and compacted, the screw rod of each elevating mechanism is prevented from rotating to the loose side due to an overload, resonance of each link system, or the like. The device for preventing the loosening of the screw rod is provided, and the device for forming the top end of the frame for producing the underdrain block according to any one of claims 1 to 4 is configured.

[0012]

First, the operation of the first elevating mechanism 150, 150 ', the third elevating mechanism 300, the second elevating mechanism 200 and the respective members attached thereto will be described, and then the operation of the present invention at the time of placing and demolding. This will be explained sequentially.

First, two sets of first elevating mechanisms 150, 15 for setting the top slope and top thickness (height) of the underdrain block.
First lifting mechanism 1 that can be operated independently, starting from 0 '
When the rotating heads 151 of the 50 and 150 ′ are respectively operated, the slide nut 159 screwed into the screw rod 152 is moved to the base 15.
The upper part of the long link 156, which is slid back and forth on the 0B, and whose lower part is axially supported by the front bearing 157, is connected to the upper part of the short link 155, and the upper part of the long link 156 is connected to the axial bearing part of the front bearing 157. 1
57a is moved up and down on a vertical line, and the elevating base 60 connected to the upper connecting shaft 160 fitted in the upper connecting hole 166 of the long link 156 through the long hole portion 66 is moved up and down.
The top end forming plate 90, which is superposed at a predetermined interval of 0, is moved up and down to a position having an arbitrary slope and an arbitrary thickness (height).

Further, when a gradient is applied to the elevating base 60 due to the difference in elevation of the first elevating mechanism 150, 150 ', the distance between the upper connecting shafts 160, 160 of the first elevating mechanism 150, 150' is extended. Since 60 slides on the upper connecting shafts 160, 160 via the long holes 66, the dimensional error from the parallel state is absorbed, and the first elevating mechanisms 150, 15
The lifting force of 0'is transmitted without hindrance.

Next, the third frame provided near the center of the underframe 50
Third lifting mechanism 300 for explaining the operation of the lifting mechanism 300
When the rotating head 301 is rotated to the descending side, the opening nest 110 connected to the upper part of the third elevating mechanism 300 causes the lid hooking portion regardless of whether the top end forming plate 90 is horizontal or when the slope is applied. The inside of the insert 70 slides vertically while sliding while being sealed, and if it rotates in the reverse direction, it slides vertically while rising while sealing and the tip of the opening insert 110 closely adheres to the bottom surface of the core. To do.

Next, the operation of the second elevating mechanism 200 provided on the elevating base 60 will be described. If the screw rod 202 of the driving elevator 200A of the second elevating mechanism 200 is rotated to the descending side,
In order to avoid the space for raising and lowering the opening forming nest 110, the driving elevator 200A and the driven elevator 200B connected by the connecting link 290 descend synchronously, so that the driving elevator 20
0A and the upper part of the driven elevator 200B, the upper part of which is projected into the opening 80 of the top molding plate 90, and the upper part 7 of the lid hooking part.
0 descends in parallel with the top-end forming plate 90, and rises in parallel with the top-end forming plate 90 when rotated in the reverse direction. Note that the lid hook 70
The leakage prevention means 75 (described later) consisting of four L-shaped packings 73 and 74 biased inward is used to insert the opening portion nest even when the top end forming plate 90 is inclined. The sliding contact surface of 110 is moved up and down while being sealed.

Since each elevating mechanism and each member act as described above, the first elevating mechanism 15 is used when the underdrain block is placed.
After adjusting 0,150B (if the same size and the same gradient do not need to be adjusted each time), the top end forming plate 90 is set to any top end thickness (height) and any inclination, and then the second elevating mechanism. 200
Is operated, the lid hook portion insert 70 protrudes from the opening 80 of the top end forming plate 90 by a predetermined dimension forming the lid hook portion.
When the third lifting mechanism 200 is operated to raise the opening insert 110, the opening insert 110 rises and comes into close contact with the bottom of the core 30 while sliding in the lid hook insert 70. hand,
A space is formed in the mold KS to form the product cover 3 and the opening 2. When the mold KS is closed (including the widening of the core 30).
Immediate placement is possible.

Further, at the time of demolding, the mold K to which the present invention is applied
When the front end plate 20 of S is opened, the rear end plate 25 retracts. After opening both side plates, the core cross section supported by the rear end plate 25 is reduced,
The third lifting mechanism 200 is reversely operated to lower the opening nest 110, and the second lifting mechanism 200 is reversely operated to cover the lid hook 7.
When 0 is lowered, no protrusions are left on the top molding plate 90, so if the bottom part 5 of the underdrain block B is adsorbed by a vacuum pad of a demolding machine (not shown) and slightly lifted, it will be in the form KS at the same time. Since the child 30 is supported with an upward play dimension, it rises and a gap is formed between the top end forming plate 90 and the product top end 1, and the underdrain block is moved toward the front end plate 20 of the mold KS in a short time. Can be easily demolded. It should be noted that even when the top end forming plate 90 is provided with a concave-convex pattern, the mold can be similarly released.

Next, in the fifth embodiment, the pawl portion 106 for locking the teeth of the spur gear 105 is locked immediately after the turning heads of the respective screw rods of the first to third lifting mechanisms by the balance weight 106w. Or, the claw 106 is pushed out only when the socket So of the drive shaft DS of each lifting mechanism operating automatic machine provided in the production line is urged by the spring 106s or the like so as to be loosened. Since the prevention means 100 is provided, the screw rod naturally rotates to the descending side due to the weight of the concrete (upper load) placed during strong vibration during compaction of concrete, resonance of each link system, etc. This has the effect of preventing dimensional defects and quality defects from occurring due to displacement.

[0020]

1 to 6 are views showing an embodiment according to claims 1 to 5 of the present invention. FIG. 1 is a side view showing a mounting state of a mold of the present invention, and FIG. 3 is a perspective view showing an embodiment of the first elevating mechanism, the third elevating mechanism and the opening nest according to the present invention, FIG.
4 is a perspective view showing an embodiment of a second lifting mechanism of the present invention, FIG.
FIG. 5 is a perspective view showing an embodiment of the lid hooking insert according to the present invention.
6 is a perspective view of a top end forming plate of the present invention, FIG. 6 is an explanatory view of a loosening prevention means of a screw rod according to claim 5 of the present invention, and FIG. 7 is a top end slope and a lid hooking opening. Perspective view of the underdrain block,
FIG. 8 is an explanatory view showing a usage state of an underdrain block with a ceiling slope and a lid hanging opening, FIG. 9 is a perspective view of a conventional underdrain block, and FIG. 10 is a lid opening of a conventional frame. It is explanatory drawing of nesting of a part.

In no particular order, first, referring to FIG.
The underdrain block BS with the top slope and lid opening formed by the present invention will be described, and the use state of the underdrain block BS with the top slope and lid opening formed by the present invention will be described with reference to FIG. explain.

FIG. 7 is a perspective view of an underdrain block BS having a top slope and an opening for hanging a lid, which is generally parallel to the bottom part 5 and the cavity part (running water part) 4 (top surface of product). ) 1
In addition, a lid-hanging opening 2 having a lid-hanging portion 3 for mounting a lid or a grating is provided in the central portion with a gradient matching the design conditions. In addition, by adjusting a first lifting mechanism of the present invention, which will be described later, the top end can be made parallel to the cavity, and the height of the top end (top end thickness) can be freely changed.
Is the foundation work to install the underdrain block. The hollow portion 4 may have an arbitrary cross-sectional shape such as a round shape, a square shape, or a square shape with rounded corners.

FIG. 8 is an explanatory view showing a usage state of the underdrain block BS having a top slope and an opening for hanging a lid. By adding a top slope, a road slope 6 and a running water slope 7 are different terrain sites. It becomes possible to meet the design conditions of (1), and the accumulation of sludge and other sediments can be washed away, and an economical water channel with little maintenance can be constructed.

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing a state where the present invention is mounted on a formwork, a part of which is shown in a sectional view, and a form KS for producing an underdrain block to which the present invention is applied (for example, the applicant previously applied for it). The culm block manufacturing form of 1992 Utility Model Registration Application No. 32031) is shown by a two-dot chain line except for the main part. The culm block manufacturing form KS is an arrow f of the underframe 50. The front end plate 20 that opens in the direction and the rear end plate 25 that opens in the direction of the arrow r while being erected in association with the opening and closing of the front end plate 20 and the expandable and contractible (cross-sectional dimension) horizontally supported by the rear end plate 25 The child 30 (the core of the mold KS is supported by providing play in the upper, left, right, and front), and both side plates (not shown) that can be freely opened and closed. The present invention is based on the underframe 50 and the core 30. It is mounted in the space surrounded by the front girder plate 20, the rear gable plate 25 and both side plates between the bottom surfaces of the.

In the embodiment shown in FIG. 1, for the convenience of the production line (because the front end plate is tilted to the left side in the figure when the frame is opened, the drive shaft DS of each automatic machine for operating the elevating mechanism becomes longer), the rear end plate 25 side. The first elevating mechanism 150 on one side and the rotating head for operating the second elevating mechanism 200 and the third elevating mechanism 300, which are frequently operated each time the mold is removed and placed, are provided.
The rotating heads for operating the 0, the second elevating mechanism 200, and the third elevating mechanism 300 may be provided on the front end plate 20 side in reverse.

The outline structure of the present invention will be described with reference to FIG. 1. The rear gable plate 25 side and the front gable plate 20 on the underframe 50 of the mold KS are described.
Two sets of first lifting mechanism 15 that can be operated independently
0,150 'are provided, and the first lifting mechanism 150,150' is provided.
On the upper part of the lid, the lid hooking part insert 70 having the opening part inserter 110 inserted therethrough.
Is provided with an elevating base 60 having an opening portion 65 in which the first elevating mechanism 150, 150 ′ is connected to the elongated holes 66 at the lower ends of both ends of the elevating base 60.
The lifting base 60 is swingably and vertically movable to form the product top end 1 (a pattern can be attached to the upper surface), and the lid hook 70 can be sealed and slid to be retracted. The top end forming plate 90 provided with 80 is connected to the upper part of the elevating base 60 at a predetermined interval, the second elevating mechanism 200 is provided on the elevating base 60, and the upper part of the second elevating mechanism 200 is hooked. The opening insert 110 is connected to the lower surface connecting hole 77 of the part insert 70, and the opening insert 110 is sealed and slidably inserted inside the lid hook insert 70. Lifting mechanism 30
0 is provided, and the upper part of the third elevating mechanism 300 is connected to the lower surface connecting hole 111 of the opening insert 110. Next, referring to FIG. 2, the first elevating mechanisms 150 and 150 ′ for adjusting the top slope and the top thickness (height) and the third elevating mechanism 300 for elevating the opening nest 110 will be described in detail.

FIG. 2 is a perspective view showing an embodiment of the first elevating mechanism, the third elevating mechanism and the opening nest according to the present invention. The rear gable plate 25 side, which is frequently operated by each elevating mechanism, is the front side (left side). ) Is illustrated (FIGS. 2 to 5).

Two sets of first elevating mechanisms 150 (on the rear gable plate side) and 150 '(on the front gable plate side) shown in FIG. 2 are link mechanisms for converting the rotational movement of the screw rod 152 into vertical movement. K
Base 1 provided on the rear gable plate side and the front gable plate side on the underframe 50 of S
The slide nuts 159 having the shaft supporting portions 159a at both ends are provided on the screw rods 152 provided on the rear end plate side and the front end plate side, respectively. The front side of each of the screw rods 152 (the tip side of each of the screw rods) is supported by a front bearing 157 having shaft supporting portions 157a at both ends, and the rear side is supported by a rear bearing 158 to rotate the screw rods 152. The slide nut 159 is provided so as to be slidable back and forth on the base 150B by the movement, and the lower connecting hole 1
55a and a short link 155 having an upper connecting hole 155b
And the lower connecting hole 156a is twice as long as the short link 155.
A long link 156 having an intermediate connection hole 156b and an upper connection hole 166 is provided, and the shaft support 157 of the front bearing 157 is provided.
The lower connecting hole 155a of the short link 155 is axially attached to a, and the upper connecting hole 155b of the short link 155 is attached to the shaft supporting portions 159a at both ends of the slide nut 159.
a is connected to the intermediate connecting hole 156b of the long link 156 axially mounted, and the length of the elevating base 60, which will be described later in detail with reference to FIG. 3, via the connecting shaft 160 fitted in the upper link 166 of the long link 156. It is connected to the hole 66 and provided so as to correspond to the extension dimension of the inclination distance when the elevation base 60 is provided with a gradient. Next, the third lifting mechanism 300 will be described.

The third lifting mechanism 300 shown in FIG.
A screw rod 3 which is a link mechanism for converting the rotational movement of 02 into vertical movement, and which supports the front portion, the intermediate portion, and the rear portion on the underframe 50.
The front side and the rear side of 02 are respectively threaded with opposite-phase screw parts,
Slide nuts 359 and 359 ′ which are slidable back and forth on the underframe 50 are screwed into the respective threaded portions, and the slide nuts 3
59, 359 ′ Long links 306 are provided on the shaft support portions 359a on both sides.
The lower connecting hole 306a of the long link 306, and the intermediate connecting hole 306b of the long link 306 is connected to the upper connecting hole 305b of the short link 305 having a half length of the long link. The connecting hole 305a is axially attached to the shaft supporting portions 308a at both ends of the intermediate bearing portion 308, and the long link 306 upper connecting hole 3 is formed.
The connecting shaft 311 fitted to the connector 10 is connected to the lower connecting hole 111 of the opening insert 110, and the opening insert 110 is slid into the lid hook insert 70 described below by the rotation of the screw 302. It is constructed so that it can vertically move in contact with it. An elastic packing 112 made of rubber, urethane resin, or the like may be provided at the tip of the opening insert 110 so as to be in close contact with the bottom surface of the core 30 when abutting, and the outer shell of the opening insert 110 is made of polyethylene.・
It can also be made of a polymer resin such as urethane.

FIG. 3 is a perspective view showing an embodiment of the second lifting mechanism of the present invention.
From a lift mechanism 200A of a link mechanism that converts the rotational movement of the screw rod 202 into a vertical motion, and a driven lift mechanism 200B of the same size that is driven by a connecting link 290 in synchronization with the drive elevator 200A. The opening nest 110 on the elevating base 60 is arranged so as to avoid the space 65 in which the elevating base 110 moves up and down.

The driving elevator 200A has a rotary head 2 at the tip.
The slide nut 210 provided with the shaft supporting portions 210a at both ends is screwed into the screw rod 202 provided with 01, the front side of the screw rod 202 is supported by the front bearing 207, and the rear portion is supported by the shaft supporting portion 20 at both ends.
When 8a is provided, it is rotatably supported by the rear bearing 208, and the slide nut 210 is provided so as to be slidable back and forth on the elevating base 60 by the rotation of the screw rod 202.
A short link 205 having an upper connection hole 205b, a long link 206 having a length twice that of the short link 205, a lower connection hole 206a, an intermediate connection hole 206b, and an upper connection hole 267.
Is provided to connect the upper connecting hole 205b of the short link 205 and the intermediate connecting hole 206b of the long link 206, and the lower connecting hole 205a of the short link 205 is pivotally attached to the shaft supporting portion 208a. 206a is pivotally attached to the shaft supporting portion 210a of the slide nut 210, and the front and rear bearings 207 and 208 are fixed to the front side of the elevating base 60. Next, the driven elevator 200B will be described.

The driven elevator 200B has a guide rod 230 supported by a front support 237 and a rear support 238 on a lift base 60 avoiding the space 65, and a shaft support 28 at both ends.
The lifting base 6 is inserted through the slider 285 provided with 5a.
0 is slidable, and a short link 205 having a lower connecting hole 205a and an upper connecting hole 205b is provided, and the short link 2
The lower link hole 206a is attached to the long link 206 that is twice the length of 05.
And an intermediate connecting hole 206b and an upper connecting hole 267 are provided, the upper connecting hole 205b of the short link 205 and the intermediate connecting hole 206b of the long link 206 are connected to each other, and the rear support portion 238 is formed.
The lower connecting hole 2 of the short link 205 is provided in the shaft supporting portions 238a at both ends.
05a is pivotally attached to the lower linking hole 206a of the long link 206.
Is pivotally attached to the shaft support portions 285a at both ends of the slider 285, and the link link 290 is provided between the shaft support portion 210a of the slider nut 210 and the shaft support portion 285a of the slider 285.
, The driven elevator 200B is moved up and down in synchronism with the lifting operation of the main drive lifting mechanism 200A, and the lid hooking part insert 70 connected to the upper part of both elevators is parallel to the top end forming plate 90 (even when the top end is inclined). It is configured to be able to move up and down.

FIG. 4 is a perspective view showing an embodiment of the lid hooking portion insert of the present invention, and shows the leakage preventing means 75 which is a main part in the lower right part of the figure. A flat portion 76 forming a lid hooking portion is provided on the left and right sides, and a space portion 79 into which the opening insert 110 can be loosely inserted is provided at the center portion. The elastic packing 73 having an L-shaped cross section is provided so as to be biased in the central direction c, and the elastic packing 74 having an L-shaped cross section whose upper portion is projected also in the front and rear inner sides is biased in the central direction c and both end portions 74e are provided. Is provided in sliding contact with the inner side 73e of the end of the elastic packing 73, and is inserted into the space 79 surrounded by both packings.
The sliding contact surfaces with the elastic packings 73 and 74 are configured so as to be sealed and slidable when moving up and down.

The left and right lower surfaces of the lid hooking insert 70 having the above-described structure are fixed on the supporting member 71, and the connecting holes 77 are provided at both ends of the supporting member 71. It is connected to the upper connecting hole 267 of the long link 206 of the mechanism 200, and is configured to be able to project and retract on the upper surface of a top end forming plate 90 described later by operating the second elevating mechanism 200.

FIG. 5 is a perspective view of a top end forming plate 90 of the present invention. The top end forming plate 90 is provided with an opening 80 at which the lid hooking part insert 70 is projected and retracted at the center and front and rear ends. Is the top plate 9
A packing 99 having an L-shaped cross section is attached to prevent leakage between the front girder plate and the rear girder plate when raising and lowering 0 and imparting a gradient, and packings 98 are provided on both side surfaces, and packing 88 is provided around the inner surface of the opening 80. The connecting member 96 provided on the lower surface is fixed to the elevating base 60 described with reference to FIG. 3 at a predetermined interval, and the top end thickness (height) is increased according to the elevating height of the first elevating mechanism 150 and 150 ′ and the difference in elevation. ) ・ It is configured with variable slope.

FIG. 6 is an explanatory view of a loosening prevention means of a screw rod according to a fifth aspect of the present invention. The loosening prevention means 100 of the screw rod shown in a locked state in FIG. 6A is a vibration of concrete by a strong vibrator. During compaction, the screw rods of each elevating mechanism are prevented from spontaneously rotating to the loosening side due to the loading load, resonance of each link system, etc., and are flattened immediately after the rotating heads of the screw rods of the first to third elevating mechanisms. The gear 105 having a gear shape is provided, and the gear 105 and the balance weight 106w or the spring 1 are provided.
A pawl portion 106, which is biased by 06s or the like and is capable of being constantly meshed, is provided on the shaft support portion 103 so as to be axially attached thereto.

FIG. 6 (b) is a view showing the opened state of the screw rod.
Drive shaft D of the automatic machine for operating each lifting mechanism installed on the production line
When the socket So of S is externally inserted, the claw portion 106 is pushed by the end edge portion Soa of the socket So to rotate rearward, and the lock of the screw rod is unlocked. The claw portion 106 of 100 has a plurality of teeth,
Alternatively, a ring-shaped member having teeth inside may be provided, and a coiled spring for constantly urging the teeth in a meshed state may be provided at the back surface. The universal joint UJ indicated by the chain double-dashed line in the figure is for the drive shaft DS of the automatic machine for operating the second elevating mechanism 200 in which the elevating mechanism is inclined.

[0038]

INDUSTRIAL APPLICABILITY The present invention includes a formwork for producing an underdrain block (for example, 1992 utility model registration application No. 3 already filed by the applicant).
No. 2031, if attached to the underdrain block manufacturing form,
By adjusting the first elevating mechanism 150, 150 ', it is possible to freely set the arbitrary slope and thickness of the top of the product (if the same size and slope are used, it is not necessary to adjust each time). The range of application can be expanded.

When placing the underdrain block, the first lifting mechanism 1
After adjusting 50 and 150B and setting the top end forming plate 90 to an arbitrary top end height and an arbitrary slope, if the second elevating mechanism 200 is operated, the lid hooking insert 70 causes the top end forming plate 90 to move. Opening 8
If the third lifting mechanism 200 protruding from 0 is operated to raise the opening insert 110, the opening insert 110 slides inside the lid hook insert 70 and the open insert 110 expands the core 30. A space is formed which abuts on the bottom surface and forms the lid hooking portion 3 and the opening 2 of the product in the mold KS, and when the mold is closed, the product can be immediately placed.

At the time of demolding, if the front end plate 20 of the mold KS to which the present invention is attached is opened, the rear end plate 25 is retracted. Next, both side plates are opened and the rear end plate 25 is played in the upper, left, right and front-back directions. If the screw rod of the third lifting mechanism 200 is rotated in a predetermined direction after reducing the cross section of the core 30 supported by the above, the opening insert 110 is lowered, and the screw rod of the second lifting mechanism 200 is moved to the predetermined position. When it is rotated in the direction, the lid hooking part insert 70 is lowered and there is no protrusion on the top end forming plate 90. Therefore, the bottom part 5 of the underdrain block B is adsorbed by the vacuum pad VP of the demolding machine and slightly lifted. For example, underdrain block and top plate 9
There is a gap between 0, and the underdrain block B is attached to the front gable plate 2 of the formwork.
The mold KS can be easily demolded in the 0 direction in a short time.
In about 3.5 minutes (according to in-house experiments) including the time required to open the mold, the demolding process is completed without damage to the openings, and at the same time, labor saving can be achieved. The underdrain block with the pattern on the top of the product can be easily removed from the mold without damage.

Further, according to a fifth aspect of the present invention, the spur gear-shaped gear and the claw portion of the lock member are constantly meshed immediately after the turning heads of the respective screw rods of the first to third elevating mechanisms so that the respective elevating mechanisms are moved. Since the loosening prevention means for the screw rod is provided so that the engagement of the claw portion 106 is released only when the socket so of the drive shaft for operation is inserted, the screw rod naturally rotates in the light load direction during vibration during compaction of concrete. As a result, it is possible to prevent each link mechanism from displacing to the descending side, which has the effect of improving the quality and dimensional accuracy of the underdrain block.

[Brief description of drawings]

FIG. 1 is a side view showing a mounting state of a mold of the present invention.

FIG. 2 is a perspective view showing an embodiment of a first elevating mechanism, a third elevating mechanism and an opening nest according to the present invention.

FIG. 3 is a perspective view showing an embodiment of a second lifting mechanism of the present invention.

FIG. 4 is a perspective view showing an embodiment of the lid hooking insert according to the present invention.

FIG. 5 is a perspective view showing an embodiment of the top end forming plate of the present invention.

FIG. 6 is an explanatory view of a loosening prevention means of a screw rod according to a fifth aspect of the present invention.

FIG. 7 is a perspective view of an underdrain block with a top slope and an opening for hanging a lid.

FIG. 8 is an explanatory view showing a usage state of an underdrain block having a top slope and an opening for hanging a lid.

FIG. 9 is a perspective view of a conventional underdrain block.

FIG. 10 is an explanatory view of a nest of a conventional underdrain block manufacturing formwork.

[Explanation of symbols]

BS-Culvert block with ceiling slope and lid opening created by the present invention 1-Top 2-Opening (on top 1) 3-Lid (inside opening 2) K-Conventional Formwork KS-Formwork for manufacturing underdrain block equipped with the present invention 20-Front gable plate (of formwork KS) 25-Back gable plate (of formwork KS) 30-Core (of formwork KS) 50-Underframe 60 ─ Elevating base 66 ─ Long hole 70 ─ Nesting part 80 ─ Opening part (of top end forming plate) 90 ─ Top end forming plate 100 ─ Loosening prevention means of screw rods of each elevating mechanism 110 ─ Opening part insert 150 , 150'-first lifting mechanism 152-screw rod (of the first lifting mechanism) 155-short link (of the first lifting mechanism) 156-long link (of the first lifting mechanism) 200-second lifting mechanism 200A-active elevator 200B-Following elevator 202-Screw rod (of second lifting mechanism) 206-Short link (Second lifting mechanism) 207--long link (of the second lifting mechanism) 300--third lifting mechanism 302--screw (of the third lifting mechanism) 305--short link (of the third lifting mechanism) 306--long link (of the third lifting mechanism) )

Claims (5)

[Claims] 1. A top end forming apparatus for a formwork for producing an underdrain block for manufacturing a underdrain block which has a variable top end slope and a top end thickness and which has an opening for a lid, and which is upside down. Two sets of front and rear sides on the frame 50 that can be operated independently of each other
Elevating mechanisms 150, 150 'are provided, and the first elevating mechanism 15
The upper connecting shaft 160 of 0,150 ′ is slidably inserted into the long holes 66 at the lower ends of both ends of the elevating base 60 having the opening 65 into which the lid hook 70 can be loosely inserted. Base 60
Is provided so as to swing and move up and down to form the product top end 1 and the top end forming plate 90 provided with an opening 80 through which the lid hooking part insert 70 is sealed and slides to be retracted. A second elevating mechanism 200 including two sets of elevators which are superposed on each other at a predetermined interval on the upper part 60 and can be operated synchronously on the elevating base 60.
Is provided, the upper connecting shaft 277 of the second elevating mechanism 200 is connected to the connecting hole 77 on the lower surface of the lid hooking insert 70, and the opening insert 110 is sealed and slid inside the lid hooking insert 70. Movably insert the connection hole 111 below the opening nest 110 into the underframe 50.
A top end forming apparatus for a formwork for producing an underdrain block, which is connected to an upper connecting shaft 311 of a third elevating mechanism 300 provided in the vicinity of the central portion of the above. 2. Two sets of first lifting mechanism 150, 150 '.
Is a link mechanism that converts the rotational movement of the screw rod 152 into vertical movement, and is a slide nut 159 that can slide forward and backward on the base 150B by the rotation of the screw rod 152 that supports the front and rear portions on the base 150B. The lower portion of the long link 156 is axially attached to the
6. The underdrain block manufacturing according to claim 1, wherein the upper portion of the short link 155 having a length of 1/2 of 6 is connected, and the lower portion of the short link 155 is axially attached to both ends of the front bearing 157. Top molding equipment for molds. 3. A second elevator mechanism 200 comprises a main elevator 200A including a link mechanism for converting the rotational movement of the screw rod 202 into vertical movement, and a link mechanism driven by a connecting link 290 connected to the main elevator 200A. In the lifting mechanism including the driven elevator 200B, the driving elevator 200A includes slide nuts 210 that are slidable back and forth on the lifting base 60 by the rotation of the screw rod 202 that supports the front and rear portions of the lifting base 60. The lower portion of the long link 207 is pivotally attached, and the long link 207 is attached to the middle portion of the long link 207.
The upper part of the short link 206 having a length of ½ is connected and the lower part of the short link 206 is pivotally attached to both ends of the rear bearing 208. , 238, the slider 285 slidable back and forth on the base 60 is inserted into the guide shaft 230 fixed to the base shaft 238, and the lower portions of the long links 207 are axially attached to both sides of the slider 285. 21
The top end forming apparatus of the underdrain block manufacturing frame according to claim 1 or 2, wherein 0 and the slider 285 are connected by a connection link 290. 4. The third lifting mechanism 300 is a link mechanism for converting the rotational movement of the screw rod 302 into vertical movement, and the front portion of the screw rod 302 supporting the front portion, the intermediate portion and the rear portion on the underframe 50. Slide nuts 3 that are threaded in opposite phases on the rear side and the rear side, respectively, and can be slid back and forth on the underframe 50 at the respective threaded portions.
59, 359 ′ are screw-fitted, the lower part of the long link 306 is axially attached to both sides of the slide nut 359, slide nut 359 ′, and one of the long links 306 is attached to the middle part of the long link 306.
4. The underdrain block manufacturing method according to claim 1, wherein an upper part of a short link 305 having a length of / 2 is connected, and a lower part of the short link 305 is axially attached to both ends of the intermediate bearing 309. Top end forming equipment for formwork. 5. The loosening prevention means 100 for the screw rod is provided immediately after the turning head of the screw rod.
A top end molding device for a formwork for producing an underdrain block according to any one of claims 1 to 4.