JP3329949B2 - Top-end molding device for formwork for culvert block production - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION A top end forming apparatus for use in a mold for manufacturing a culvert block having a top end gradient and a top end thickness (height) variable and provided with an opening for a lid. It is easy to automate the line, and it is possible to produce a mold for manufacturing a culvert block that can save labor.

[0002]

2. Description of the Related Art A conventional culvert block B having a lid opening at its top will be described with reference to FIG.
The nesting IL that forms the opening for lid cover will be described.

FIG. 9A is a perspective view of a conventional culvert block. A culvert block B shown in the figure has a hollow portion (flowing portion).
This is a general-purpose article provided with an opening ka having a lid hook f for attaching a lid or grating at the center of the top end 1 parallel to the bottom 4 and the bottom 5 as shown in the schematic construction diagram shown in FIG. When installed in parallel with the road slope, the road slope 6 and the waterway slope 7 are of course the same slope. Cannot satisfy the design conditions when the waterway gradient 7 is different from the waterway gradient 7. Reference numeral 8 in the figure is a foundation work for installing a culvert block.

FIG. 10 is an explanatory view of a nest IL forming an opening of a conventional mold K. A lid f and an opening ka are formed on a bottom surface T on a frame D of the mold K. Fix the nested IL,
When concrete is poured (concrete is put into the formwork) and the mold is removed (when the cured product is taken out from the formwork), the core N of the formwork K is reduced and the culvert block B is set in the middle. After the child N is extracted and the front / rear plates F, R and both side plates S are opened, the culvert block B is lifted and the die IL is removed upward while leaving the child IL on the bottom surface T of the formwork K.

[0005] The conventional form K with the nesting IL attached is:
If the horizontal state is slightly out of order when lifting the culvert block B at the time of demolding, the strength of the concrete immediately after curing is still low, so the area around the opening including the lid hook is damaged, and the part needs to be repaired after demolding. In many cases, removal of the mold requires the skill of a skilled worker, and the installation of the core N, which is in close contact with the nesting IL when assembling the formwork, is complicated. Since it is difficult to automate the process (including assembling the formwork), there has been a demand for an improvement in the top end forming apparatus which replaces the nesting IL of the manufacturing formwork.

[0006]

SUMMARY OF THE INVENTION The disadvantages of the prior art are eliminated, an opening for a lid is provided, and a top slope and a top thickness, which were not possible in the past, can be freely selected. Provided is a top-end molding device for a mold for manufacturing a culvert block, which is easy and can save labor and time in a demolding and casting process.

[0007]

In order to solve the above-mentioned problems, according to the present invention, a culvert block in which the inclination of the top end and the thickness of the top end are variable and the opening portion for the lid is provided is manufactured upside down. An apparatus for forming a top of a mold for producing an underdrain block, comprising:
And two sets of independently operable first lifting mechanisms 150, 150 'on the front side and the rear side on the upper side, and the upper connecting shaft 160 of the first lifting mechanisms 150, 150' Nesting 7
0 is slidably inserted into an elongated hole 66 below both ends of an elevating base 60 provided with an opening 65 into which an insertion hole 65 into which a product can be inserted is freely inserted, and the elevating base 60 is provided so as to be able to swing and ascend and descend. The top end forming plate 90 provided with the opening 80 that can be formed, and the cover holder insert 70 is sealed and slid and provided so as to be able to come and go is attached to the elevating base 6.
The second lifting mechanism 2 is composed of two sets of lifting and lowering mechanisms that can be operated on the lifting base 60 in synchronization with a predetermined interval provided at the upper part.
00, and an upper connecting shaft 277 of the second lifting mechanism 200.
Is connected to the connection hole 77 below the lid insert 70, and the opening insert 110 is sealed and slidably inserted inside the lid insert 70, and the lower side of the opening insert 110 is inserted. Is connected to the upper connection shaft 311 of the third elevating mechanism 300 provided near the center of the underframe 50. .

In the second aspect, the two sets of first lifting mechanisms 150, 150 'are link mechanisms for converting the turning movement of the screw 152 into a vertical movement, and the front and rear parts are supported on a base 150B. The rotation of the screw 152 causes the base 150 to rotate.
A lower portion of the long link 156 is pivotally mounted on both sides of a slide nut 159 that can slide back and forth on B, and an upper portion of a short link 155 having a length of の of the long link 156 is connected to an intermediate portion of the long link 156. The lower part of the short link 155 is connected to the front bearing 157.
The top end forming apparatus of a mold for manufacturing a culvert block according to claim 1, wherein the top end forming apparatus is provided so as to be axially attached to both ends.

In the third aspect, the second lifting mechanism 200
Is a driven elevator 200A comprising a link mechanism for converting the rotational movement of the screw 202 into a vertical movement, and the driven elevator 20A
This is a lifting mechanism comprising a driven lift 200B comprising a link mechanism driven by a connection link 290 connected to the lifting link 200A. The driven lift 200A is driven by the rotation of a screw 202 supporting the front and rear portions on the lifting base 60. 6
Over 0 to slidable slide nut 210 on both sides in the longitudinal pivotally attached to the lower portion of the long link 206, connecting the top of the half length of the short link 205 of the long link 206 to an intermediate portion of the long link 206 The lower part of the short link 205 is connected to a rear bearing 208.
The driven elevator 200B is provided on both ends of the shaft, and the driven elevator 200B has a slider 285 slidable back and forth on the base 60 through a guide shaft 230 fixed to the front and rear bearings 237 and 238 on the elevator base 60. The lower part of the long link 206 is pivotally mounted on both sides of the slider 285, and the slider of the
The ride nut ( 210) and the slider (285) are connected by a connection link (290).
A top end forming apparatus for a mold for manufacturing a culvert block according to any one of the preceding claims.

According to the fourth aspect, the third elevating mechanism 300 is provided.
Is a link mechanism for converting the rotational movement of the screw 302 into a vertical movement. The screw having opposite phases on the front and rear sides of the screw 302 supporting the front, middle and rear parts on the underframe 50. Are screwed, and slide nuts 359, 359 'slidable back and forth on the underframe 50 are screwed into the respective screwed portions, and the lower portion of the long link 306 is pivoted on both sides of the slide nuts 359, 359'. The long link 306 is attached to an intermediate portion of the long link 306.
The upper portion of the short link 305 having a length of is connected, and the lower portion of the short link 305 is axially attached to both ends of the intermediate bearing portion 308 .
A top end forming apparatus for a mold for manufacturing a culvert block according to any one of claims 1 to 3, characterized in that:

According to a fifth aspect of the present invention, during the compaction of the concrete by vibration, the screw of each lifting mechanism is prevented from rotating to the loose side due to the overload and resonance of each link system, etc. The apparatus for forming a top end of a mold for manufacturing an underdrain block according to any one of claims 1 to 4, further comprising a means for preventing loosening of a screw rod.

[0012]

First, the operation of the first elevating mechanism 150, 150 ', the third elevating mechanism 300, and the second elevating mechanism 200 and the associated members will be described. It will be described sequentially.

First, two sets of first lifting mechanisms 150 and 15 for setting the top slope and top thickness (height) of the culvert block.
The description starts from 0 ' . First lifting mechanism 1 that can be operated independently
When the rotating heads 151 of the 50 and 150 ′ are respectively operated, the slide nut 159 screwed to the screw 152 is moved to the base 15.
The upper part of the short link 155 that slides back and forth on the front bearing OB and the lower part is pivotally supported by the front bearing 157, and the upper part of the long link 156 that connects the middle part (middle point) is the shaft support part of the front bearing 157. 1
The elevator base 60 connected to the upper connection shaft 160 fitted in the upper connection hole 166 of the long link 156 via the elongated hole 66 is moved up and down on the vertical line 57a.
The top molded plate 90 that has been superimposed is moved up and down to a position having an arbitrary gradient and an arbitrary top thickness (height) at a predetermined interval of 0.

In addition, when a gradient is applied to the lifting base 60 due to a difference in elevation between the first lifting mechanisms 150, 150 ', the distance between the upper connecting shafts 160, 160 of the first lifting mechanisms 150, 150' is increased. By sliding the upper and lower shafts 60 on the upper connecting shafts 160 through the elongated holes 66, the dimensional error from the parallel state is absorbed, and the first lifting mechanisms 150, 15
The lifting force of 0 'is transmitted without any trouble.

Next, the third frame provided near the center of the underframe 50 will be described.
The operation of the lifting mechanism 300 will be described . Third lifting mechanism 300
When the rotating head 301 is rotated to the descending side, the opening insert 110 connected to the upper part of the third elevating mechanism 300 is disengaged regardless of whether the top end forming plate 90 is horizontal or inclined. The inside of the nest 70 slides vertically while being sealed, and descends vertically. If it rotates in the reverse direction, it slides vertically while rising while sealing, and the tip of the opening nest 110 closely adheres to the bottom of the core. I do.

Next, the operation of the second lifting mechanism 200 provided on the lifting base 60 will be described . By rotating the screw rod 202 of the driving elevator 200A of the second lifting mechanism 200 to the descending side,
In order to avoid the space in which the opening forming insert 110 moves up and down, the driving elevator 200A and the driven elevator 200B connected by the connection link 290 descend and synchronize, and the driving elevator 20B
0A and the lid holder insert 7 connected to the upper part of the driven elevator 200B and projecting the upper part into the opening 80 of the top end forming plate 90.
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. In addition, the cover nest 70
Even when the top end forming plate 90 is provided with a gradient, the opening inserts are inserted by the leak preventing means 75 (described later) comprising four L-shaped packings 73 and 74 urged inward. 110 is moved up and down with the sliding surface of 110 sealed.

As described above, the respective lifting mechanisms and the respective members operate, so that the first lifting mechanism 15
0, 150 ' is adjusted (the adjustment is not necessary each time when the dimensions are the same and the gradient is the same). The top end forming plate 90 is set to an arbitrary top end thickness (height) and an arbitrary slope, and then the second elevation is performed. Mechanism 200
Is operated, the cover hook insert 70 protrudes from the opening 80 of the top end forming plate 90 by a predetermined dimension for forming the cover hook . next,
When the third elevating mechanism 200 is operated to raise the opening insert 110, the opening insert 110 is raised and adhered to the bottom of the core 30 while sliding in the cover hook insert 70 until the opening insert 110 contacts the bottom surface of the core 30. hand,
A space for forming the lid 3 and the opening 2 of the product is formed in the mold KS, and the mold KS is closed (including the widening of the core 30).
It can be installed immediately.

Further, at the time of demolding, the mold K to which the present invention is applied is used.
If the front end plate 20 of S is opened, the rear end plate 25 is retracted. After opening both side plates and reducing the core section supported by the rear end plate 25,
The third elevating mechanism 200 is operated in reverse to lower the opening nest 110, and the second elevating mechanism 200 is operated in reverse to cover nest 7
When 0 is lowered, no protrusion is formed on the top end forming plate 90. Therefore, if the bottom portion 5 of the culvert block B is sucked and slightly lifted by a vacuum pad of a demolding machine (not shown), Since the child 30 is supported with an upward play dimension, it rises, a gap is formed between the top end forming plate 90 and the product top end 1, and the culvert block is quickly moved toward the front end plate 20 of the formwork KS. It can be easily removed. It should be noted that when the top end forming plate 90 is provided with an uneven pattern, the mold can be similarly removed.

Next, in the embodiment of the present invention, immediately after the turning head of each screw of the first to third elevating mechanisms, the pawl portion 106 that locks with the teeth of the spur gear-shaped gear 105 has a balance weight 106w. Alternatively, the claw portion 106 is pushed and released only when the socket portion So of the drive shaft DS of each of the automatic lifting and lowering mechanism operating machines provided on the production line is fitted and urged by the springs 106s and the like to be always engaged. Since the preventive means 100 is provided, the screw is spontaneously rotated to the descending side due to the concrete weight (load on top) and the resonance of each link system, which are cast during strong vibration during compaction of the concrete, and each link mechanism is rotated. This has the effect of preventing the occurrence of dimensional defects and quality defects of the product due to the 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 the present invention on a mold, and FIG. FIG. 3 is a perspective view showing an embodiment of a first elevating mechanism, a third elevating mechanism, and an opening nest of the present invention.
FIG. 4 is a perspective view showing an embodiment of a second lifting mechanism according to the present invention.
FIG. 5 is a perspective view showing an embodiment of a cover hook insert according to the present invention, and FIG.
FIG. 6 is a perspective view of a top-end forming plate of the present invention, FIG. 6 is an explanatory view of a screw rod loosening prevention means according to claim 5 of the present invention, and FIG. Perspective view of a culvert block,
FIG. 8 is an explanatory view showing a use state of a culvert block provided with a top slope and a lid opening, FIG. 9 is a perspective view of a conventional culvert block, and FIG. 10 is a lid opening of a conventional frame. It is explanatory drawing of insertion of a part.

Although the order is not specified, first, referring to FIG.
The culvert block BS with the top slope and the lid opening formed by the present invention will be described. FIG. 8 shows the use state of the culvert block BS with the top slope and the lid opening formed by the present invention. explain.

FIG. 7 is a perspective view of a culvert block BS provided with a top slope and an opening for hooking, and the top (product top surface) which is usually parallel to the bottom portion 5 and the hollow portion (flowing portion) 4. ) 1
In addition, an opening 2 for attaching a lid with a lid 3 for attaching a lid or grating is provided at the center with a gradient matching the design conditions. By adjusting a first lifting mechanism of the present invention, which will be described later, the top can be made parallel to the cavity and the height (top thickness) of the top can be freely changed.
Is a foundation work to install a culvert block. The cavity 4 may have an arbitrary cross-sectional shape such as a round shape, a square shape, and a square shape with rounded corners.

FIG. 8 is an explanatory diagram showing a use state of the culvert block BS having a top slope and an opening for hanging a lid. Therefore, it is possible to construct an economical water channel with less maintenance because the sediment such as sludge is swept away.

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing a state of attachment to a formwork of the present invention, a part of which is shown in a cross-sectional view, a formwork KS for manufacturing a culvert block to which the present invention is applied (for example, the applicant has previously filed an application). The culvert block manufacturing form of the utility model registration application No. 32031 in 1992) is shown by a two-dot chain line except for the main part. The culvert 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 conjunction with the opening and closing of the front end plate 20 and the middle that is horizontally expandable and contractible (has a cross-sectional dimension) supported by the rear end plate 25 The child 30 (the core of the mold KS is supported with play at the top, left, right, front and back) and openable side plates (not shown). Are mounted in a space surrounded by the front and rear wives 20, 25 between the bottom surfaces of the two.

In the embodiment shown in FIG. 1, on the convenience of the production line (since the drive shaft DS of the automatic machine for operating each lifting / lowering mechanism becomes longer if the front end plate is tilted to the left side in the figure when the form is opened), A rotating head for operating the first lifting mechanism 150 on one side and the second lifting mechanism 200 and the third lifting mechanism 300, which are frequently operated every time the mold is removed and driven, is provided.
A rotating head for operating the 0, the second lifting mechanism 200, and the third lifting mechanism 300 may be provided on the front end plate 20 side on the contrary.

Referring to FIG. 1, the schematic configuration of the present invention will be described. The rear end plate 25 and the front end plate 20 on the underframe 50 of the formwork KS are described.
Two sets of independently movable first lifting mechanisms 15 on the side
0, 150 ′, and the first elevating mechanism 150, 150 ′
In the upper part of the opening, the lid insertion part 70 with the opening insertion part 110 inserted
Is provided with an elevating base 60 having an opening 65 through which the first and second elevating mechanisms 150 and 150 ′ can be connected.
The lifting base 60 is swingably and vertically movable to form the top end 1 of the product (a pattern can be provided on the upper surface), and the opening 70 through which the lid hooking part 70 can be sealed and slid to move out. The top end forming plate 90 provided with the upper and lower 80 is connected to the upper part of the elevating base 60 at a predetermined interval, a second elevating mechanism 200 is provided on the elevating base 60, and the upper part of the second elevating mechanism 200 is covered with a lid. The opening insert 110 is slidably inserted inside the cover hook insert 70 in a slidable manner. Lifting mechanism 30
0, the upper part of the third elevating mechanism 300 is connected to the lower surface connecting hole 111 of the opening insert 110. Next, with reference to FIG. 2, the first lifting mechanisms 150 and 150 ′ for adjusting the top slope and the top thickness (height) and the third lifting mechanism 300 for lifting and lowering the opening insert 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. ) Are shown (FIGS. 2 to 5).

Two pairs of first elevating mechanisms 150 (rear end plate side) and 150 '(front end plate side) shown in FIG. 2 are link mechanisms for converting the rotational movement of the screw 152 into a vertical movement. K
Bases 1 provided on the rear and front wives on the underframe 50 of S
A slide nut 159 which is provided on the rear side of the rear end plate 50B and the front end plate side and which is operably provided on the rear end plate 50B and 150B, and which has a pivotal head 151 at the end thereof and a shaft support 159a at both ends. The front side of the threaded rod 152 (the tip side of each threaded rod) is supported by a front bearing 157 having a shaft support 157a at both ends, and the rear side is supported by a rear bearing 158. The slide nut 159 is provided so as to be slidable back and forth on the base 150B by the movement,
55a and a short link 155 having an upper connection hole 155b
And a lower connecting hole 156a having a length twice as long as the short link 155.
And a long link 156 in which an intermediate connection hole 156b and an upper connection hole 166 are formed, and a shaft support 157 of a front bearing 157 is provided.
a, the lower connection hole 155a of the short link 155 is axially attached to the lower link 155, and the lower connection hole 156b of the short link 155 is connected to the shaft support portions 159a at both ends of the slide nut 159.
a is connected to an intermediate connection hole 156b of the long link 156 having the shaft attached thereto, and the length of the elevating base 60, which will be described in detail later with reference to FIG. 3, through a connection shaft 160 fitted in the upper link hole 166 of the long link 156. It is connected to the hole 66 and provided so as to be able to cope with the extension of the inclination distance of the elevation base 60 when the inclination is applied. Next, the third lifting mechanism 300 will be described.

The third lifting mechanism 300 shown in FIG.
02 is a link mechanism for converting the turning motion of the front and rear parts 02 into an up-and-down motion.
02, screw threads of opposite phase on the front side and the rear side, respectively.
Slide nuts 359, 359 ', which can slide back and forth on the underframe 50, are screwed into the respective threaded portions.
The long link 306 is attached to the shaft support portions 359a on both sides of 59, 359 '.
The lower connection hole 306a of the short link 305 is connected to the middle connection hole 306b of the long link 306 by connecting the upper connection hole 305b of the short link 305 having a half length of the long link. The connection hole 305a is axially attached to the shaft support portions 308a at both ends of the intermediate bearing portion 308, and the upper link hole 3 of the long link 306 is formed.
The connecting shaft 311 fitted to the opening 10 is connected to the lower connecting hole 111 of the opening insert 110, and the opening insert 110 is slid into contact with the cover hook insert 70 described below by the rotation of the screw 302. It is configured to be able to move up and down vertically. In addition, opening part insertion 1
An elastic packing 112 made of rubber, urethane resin or the like may be provided at the tip end of the core 10 so as to be able to adhere to the bottom surface of the core 30 at the time of contact, and the outer shell of the opening insert 110 is made of a polymer such as polyethylene or urethane. It can also be made of resin.

FIG. 3 is a perspective view showing an embodiment of the second elevating mechanism according to the present invention.
And a driven mechanism 200A of a link mechanism that converts the rotational motion of the screw 202 into a vertical motion, and a driven mechanism 200B of a link mechanism of the same dimensions that is driven by the connecting link 290 in synchronization with the driven mechanism 200A. It is arranged so as to avoid the space 65 in which the opening insert 110 on the elevating base 60 moves up and down.

The driving elevator 200A has a rotating head 2 at its tip.
A slide nut 210 provided with a shaft support 210a at each end is screwed into the screw 202 provided with the first support 01, and a front portion of the screw 202 is supported by a front bearing 207, and a rear portion is provided at both ends at both ends.
8a is rotatably supported by a rear bearing 208, and a slide nut 210 is provided so as to be slidable back and forth on the elevating base 60 by rotation of the screw rod 202, and a lower connection hole 205a and an upper connection hole 205b are formed. A short link 205 and a long link 206 that is twice as long as the short link 205 are provided with a lower connecting hole 206a, an intermediate connecting hole 206b, and an upper connecting hole 267, and the upper connecting hole 205b and the long link 206 of the short link 205 are provided. Of the shaft supporting portion 2b.
08a, the lower connecting hole 205a of the short link 205 is axially mounted, the lower connecting hole 206a of the long link 206 is axially mounted on the shaft support 210a of the slide nut 210, and the front and rear bearings 207, 208 are mounted on the elevating base 60. Is fixed to the front side. Next, the driven elevator 200B will be described.

The driven elevator 200B has a guide shaft 230 supported by a front support portion 237 and a rear support portion 238 on the lift base 60 avoiding the space 65, and a shaft support portion 28 at both ends.
The slider 285 provided with the base 5a is inserted through the lift base 6
And a short link 205 having a lower connecting hole 205a and an upper connecting hole 205b provided slidably on the upper link 0.
The lower link hole 206a is formed in the long link 206 twice as long as
, An intermediate connection hole 206b and an upper connection hole 267 are provided, and the upper connection hole 205b of the short link 205 and the intermediate connection hole 206b of the long link 206 are connected.
The lower link hole 2 of the short link 205 is formed in the shaft support portions 238a at both ends.
05a, and the lower connecting hole 206a of the long link 206
Are connected to the shaft supports 285a at both ends of the slider 285, and the shaft support 210a of the slide nut 210 and the shaft support 285a of the slider 285 are connected by a connection link 290, and are driven in synchronization with the lifting and lowering operation of the main driving mechanism 200A. The elevator 200B is moved up and down, and the lid hooking part 70 connected to the upper parts of both elevators can be moved up and down in parallel with the top end forming plate 90 (even when the top end is inclined).

FIG. 4 is a perspective view showing an embodiment of the nesting of the lid according to the present invention, and shows a leakage prevention means 75 as a main part at the lower right of the figure . The lid hooking part insert 70 has a flat part 76 forming a lid hooking part on the upper left and right sides, a space part 79 in which the opening part insert 110 can be loosely inserted in the center part, and a tapered outer periphery. The body is provided with an elastic packing 73 having an L-shaped cross section having an upper part protruding left and right inward in the center direction c, and an elastic packing 74 having an L-shaped cross section having an upper part protruding also on the front and rear inner sides. c and both ends 74e are provided in sliding contact with the inner end 73e of the elastic packing 73, and the opening insert 110 inserted into the space 79 surrounded by both packings.
The sliding contact surfaces with the elastic packings 73 and 74 are sealed and slidable when moving up and down.

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

FIG. 5 is a perspective view of the top end forming plate 90 of the present invention. The top end forming plate 90 is provided with an opening 80 in which the cover hook insert 70 protrudes and retracts at the center, and at the front and rear ends. Is the top end forming plate 9
0, the packing 99 of the L-shaped cross section for preventing leakage between the front and rear end plates at the time of applying the gradient is installed, the packing 98 is provided on both side surfaces, and the packing 88 is also provided on the inner surface of the opening 80, A predetermined interval is provided by a connecting member 96 provided on the lower surface and fixed on the elevating base 60 described with reference to FIG. 3, and the top height (height) is determined by the elevating height and the elevating difference of the first elevating mechanisms 150 and 150 ′. )-Variable gradient.

FIG. 6 is an explanatory view of a screw rod loosening prevention means according to a fifth aspect of the present invention. The screw rod loosening prevention means 100 shown in FIG. 6 (a) in a locked state is a concrete vibration by a strong vibrator. During compaction, the screw of each elevating mechanism is prevented from rotating spontaneously to the loose side due to the load on the load and resonance of each link system, etc., and flattened immediately after the turning head of each screw of the first to third elevating mechanisms. A gear-shaped gear 105 is provided, and the gear 105 and the balance weight 106w or the spring 1
The pawl 106, which is urged by 06s or the like and can always mesh, is provided on the shaft support 103.

FIG. 6B is a view showing the opened state of the screw rod.
Drive shaft D of the automatic machine for operating each lifting mechanism provided on the production line
When the S socket So is extrapolated, the claw portion 106 is pushed by the end edge portion Soa of the socket So and rotates rearward, and the lock of the threaded rod is released . Further, the claw portion 106 of the screw rod loosening prevention means 100 has a plurality of teeth,
Alternatively, a ring-shaped spring having teeth on the inside may be provided, and a spiral spring which constantly urges the teeth on the back surface may be provided. The universal joint UJ indicated by a two-dot chain line in the figure is for the drive shaft DS of the automatic machine for operating the second lifting mechanism 200 in which the lifting mechanism is inclined.

[0038]

According to the present invention, a mold for producing a culvert block (for example, a utility model registration application no.
If it is attached to the mold for manufacturing a culvert block of No. 2031, by adjusting the first lifting / lowering mechanism 150, 150 ', the arbitrary inclination and the arbitrary thickness of the top of the product can be freely set (the same size and the same size). In the case of a gradient, it is not necessary to adjust each time), and the applicable range of the same mold can be expanded.

When placing the culvert block, the first lifting mechanism 1
After adjusting the top 50 and the 150 ' to set the top molding plate 90 to an arbitrary height and an arbitrary gradient, the second lifting mechanism 200 is operated to allow the cover hook insert 70 to move the top molding plate 90. Opening 8
By operating the third elevating mechanism 200 projecting from 0 to raise the opening nest 110, the opening nest 110 slides inside the lid hooking nest 70, and the opening nest 110 is expanded (width expanded). There is a space in contact with the bottom surface to form the lid cover 3 and the opening 2 of the product in the mold KS, and when the mold is closed, it can be installed immediately.

Also, at the time of removing the mold, the rear end plate 25 is retracted by opening the front end plate 20 of the formwork KS equipped with the present invention, and then the both end plates are opened to allow the rear end plate 25 to play in the upward, left, right, front and rear directions. When the screw of the third lifting mechanism 200 is rotated in a predetermined direction after reducing the cross-section of the core 30 supported by the provision of the opening, the opening insert 110 descends and the screw of the second lifting mechanism 200 If it rotates in the direction, since the lid hooking part insert 70 descends and there are no protrusions on the top end forming plate 90, the bottom part 5 of the culvert block B is sucked by the vacuum pad VP of the demolding machine and slightly lifted. For example, culvert block and top end forming plate 9
0, a gap is created, and the culvert block B is
The mold can be easily removed in a short time in the zero direction.
In a short time of about 3.5 minutes (based on in-house experiments) including the mold opening time, the demolding process is completed without any damage to the opening, and at the same time, labor saving can be achieved. The culvert block with the pattern on the top of the product can be easily removed without damage.

Furthermore, the spur gear-shaped gear and the claw portion of the lock member always mesh immediately after the turning head of each screw rod of the first to third elevating mechanisms, so that each of the elevating mechanisms Since the screw rod loosening prevention means is provided so that the engagement of the claw portion 106 is released only when the socket so of the operation drive shaft is inserted and inserted, the screw rod naturally rotates in the light load direction at the time of vibration during compaction of concrete. As a result, it is possible to prevent each link mechanism from being displaced to the descending side, thereby improving the quality and dimensional accuracy of the culvert block.

[Brief description of the drawings]

FIG. 1 is a side view showing a state of being mounted on a formwork 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 of 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 a cover hook insert according to the present invention.

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

FIG. 6 is an explanatory view of a screw rod loosening prevention means according to claim 5 of the present invention.

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

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

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

FIG. 10 is an explanatory view of the nesting of a conventional mold for producing a culvert block.

[Explanation of symbols]

BS─Culvert block with top slope and lid opening formed by the present invention 1─top 2─opening (on top 1) 3─cover (in opening 2) K─conventional Formwork KS {Formwork for manufacturing culvert block equipped with the present invention 20} Front endplate (of formwork KS) 25 {Rear endplate (of formwork KS) 30} Core (of formwork KS) 50 mm Underframe 60 {Elevation base 66} Elongated hole 70} Lid hook insertion 80} Opening (of top-end molding plate) 90} Top-end molding plate 100} Means for preventing screw from loosening of each elevating mechanism 110 # Opening insertion 150 , 150 ′ {first lifting mechanism 152} screw (of first lifting mechanism) 155} short link (of first lifting mechanism) 156} long link (of first lifting mechanism) 200 {second lifting mechanism 200A} driven elevator 200B─ Follower elevator 202 機 Screw rod (of second elevator mechanism) 206─ Short link (second elevator) 207) long link (of the second lifting mechanism) 300 {third lifting / lowering mechanism 302} screw rod (of the third lifting / lowering mechanism) 305} short link (of the third lifting / lowering mechanism) 306} long link (of the third lifting / lowering mechanism) )

Claims (5)

(57) [Claims] 1. An apparatus for molding a culvert block for producing a culvert block in which a top slope and a top thickness are variable and an culvert block provided with an opening for a lid is turned upside down. The first and second independently operable first and second sets can be operated on the front side and the rear side of the frame 50.
Lifting mechanisms 150 and 150 ′ are provided, and the first lifting mechanism 15
The upper and lower coupling shafts 160 of 0, 150 'are slidably inserted into the elongated holes 66 on the lower sides of both ends of the elevating base 60 in which the opening 65 into which the lid holder insert 70 can be freely inserted is formed. Base 60
The upper end forming plate 90 provided with an opening 80 through which the product top end 1 is formed and the lid hooking piece 70 can be sealed and slid and provided so that the product top end 1 is formed. The second elevating mechanism 200 is composed of two sets of elevators which are superimposed at predetermined intervals on the upper part 60 and are synchronously operated on the elevating base 60.
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 holder 70, and the opening insert 110 is sealed and slid inside the lid holder 70. Movably inserted and the connecting hole 111 below the opening insert 110 is inserted into the underframe 50.
A top end forming apparatus for a mold for manufacturing a culvert block, wherein the top end is connected to an upper connecting shaft 311 of a third lifting mechanism 300 provided near a central portion of the block. 2. Two sets of first lifting mechanisms 150, 150 '.
Is a link mechanism that converts the rotational movement of the screw 152 into a vertical movement, and a slide nut 159 that can slide back and forth on the base 150B by the rotation of the screw 152 supporting the front and rear portions on the base 150B. The lower part of the long link 156 is axially attached to the
6. The culvert block manufacturing according to claim 1, wherein an upper portion of the short link 155 having a length of 1/2 of 6 is connected, and a lower portion of the short link 155 is axially mounted on both ends of the front bearing 157. For forming the top of the formwork. 3. The second lifting mechanism 200 comprises a main lift 200A comprising a link mechanism for converting the turning movement of the screw rod 202 into a vertical movement, and a link mechanism driven by a connection link 290 connected to the main lift 200A. The driven elevator 200A is provided with a slide nut 210 that can slide back and forth on the lift base 60 by rotating a screw 202 that supports the front and rear portions on the lift base 60. pivotally attached to the lower portion of the long link 206, the long link 206 to an intermediate portion of the long link 206
Connecting the top of the short link 205 1/2 length of, provided pivotally at the bottom of the short link 205 to the rear bearing 208 at both ends, a driven elevator 200B after pre-on lift base 60
A slider 285 slidable back and forth on the base 60 is inserted into a guide shaft 230 fixed to the support portions 237 and 238 , and a lower portion of the long link 206 is axially mounted on both sides of the slider 285, so that the main elevator 200A is driven. Slide nut 21
3. The apparatus according to claim 1, wherein the slider and the slider are connected by a connection link. 4. 4. A third elevating mechanism 300 is a link mechanism for converting the turning movement of the screw 302 into a vertical movement, and the front part of the screw 302 supporting the front, middle and rear parts on the underframe 50. A screw nut having opposite phases is screwed on the side and the rear side, and a slide nut 3 slidable back and forth on the underframe 50 on each screwed portion.
59, 359 ', and slide nuts 359, 3
A lower portion of the long link 306 is pivotally mounted on both sides of the short link 59 ′, and an upper portion of the short link 305 having a half length of the long link 306 is connected to an intermediate portion of the long link 306.
The apparatus according to any one of claims 1 to 3, wherein the intermediate bearing portion (308) is axially attached to both ends of the intermediate bearing portion (308 ). 5. The screw rod loosening prevention means 100 is provided immediately after the screw rod rotating head.
An apparatus for forming a top end of a formwork for producing a culvert block according to any one of the preceding claims.