JPS59134253A - Insert arrangement in molded product utilizing mold frame - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insert placement method for a molded product using a formwork, and uses a jig or the like to place inserts from the glue 1 side of the formwork while maintaining a space between them and the inner surface of the formwork. The insert can be simply left in the molded product by placing it in the intended position and removing the insert after molding.

If the insert can be inserted directly into the formwork, please refer to the chapter before molding (1iii is also easy, but when the formwork is removed, the unusable end surface of the insert will be exposed on the outside of the molded product, which is inconvenient). However, there is a disadvantage that the work must be carried out inside the formwork.For example, when forming humid pipes, the formwork is cylindrical, and people do not have to work inside the cylinder. Otherwise, the work becomes troublesome.

The present invention involves drilling through holes in the formwork, installing several fixing jigs on the outer surface, and attaching the attachment/detachment jig to a screw shaft with one end protruding from the outside on the axis of the attachment/detachment jig, with the service part facing forward. A space forming part having an outer shape whose diameter gradually increases toward the inner surface is provided between the end face of the fitting part of the formwork through-hole, and the insert is screwed into the part, and the insert is screwed into the through-hole of the formwork. Insert from the outside and fit the fitting part of the attachment/detachment jig into the through hole of the formwork and attach it to the fixing jig. After molding the A2 material, remove the screw shaft from the insert and the detachment jig from the fixation jig. , an insert arrangement method for a molded product using a formwork, which is characterized by leaving the insert remaining in the molded product, and its implementation is detailed as follows with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

1 is a formwork with a through hole 2 bored therein, and several fixing jigs 3 are cut on the outside facing the through hole. In the illustrated example, the jig 3 includes a female thread 4, an inward flange 5 at the inner end thereof, and a through hole 6 located at the center of the flange. Welded to 1. 7 is the destination IP;? , one on the axis with a jig! 1' has a screw shaft 8 projecting outward, and an insert 9 is screwed into the screw shaft through a screw hole 10. Therefore, the insert should face the service part 11 first, and the end face E of the fitting part 12 with the through hole 2 of the formwork J of the attachment/detachment jig 7 and the insert S.
The end face IC side (l
On the other hand, the outer diameter gradually increases, for example, the inner ring 1 (trapezoid, trapezoid, etc.).
A space forming portion 14 having a bowl shape or the like is present.

The situation is as follows. Therefore, the length L3, which is the sum of the lengths Ll and L2 of the gap forming part ↓4 and the insert 9, is substantially the thickness of the molded product A, and therefore, the gap forming part ↓ corresponds to the thickness L3. 14 and/or insert 9 are available in various lengths.

This attachment/detachment jig 7 has a bolt head 5 at the other end (+if
Furthermore, a male thread 16 is provided between the bolt part and the fitting part 12 to be screwed into the female thread 4 of the fixing jig 3.

Insert the insert 9 screwed onto the screw shaft 8 and attached to the attachment/detachment jig 7 from the outside into the through hole 2 of the formwork 1, and insert the fitting part]2 of the attachment/detachment jig 7 into the through hole 2. After fitting, the attachment/detachment jig 7 is screwed onto the fixing jig 3. This completes the placement of the insert 9, and the camp 17 is fitted into the service part 11 as required.

By making the end surface E of the forming part 14 match the inner surface of the mold l, the length L3 including the insert 8 can be maintained as specified, and the end face of the service part 11 of the insert 9 can be adjusted to the molded product A.
can be made to almost match the surface of This prevents the end face of the service part IJ from getting caught with the scraping board when it protrudes outside the surface of the molded product, and also prevents incomplete installation of service part IJ tools, such as bolts, if it is buried within the molded product. It can be prevented. In order to keep the space forming part 14 on the inner surface of the formwork 1 as described above, for example, the stepped part between the male thread 16 of the attachment/detachment jig 7 and the fitting part 12 and the inward flange 5 of the fixing jig 3 are placed in contact with each other. contact, or contact between the bolt head 15 and the fixing jig 3 is used. In addition, if a gasket 9 is interposed between the step portion 18 and the contact surface of the inward collar 5 of the fixing jig 3, the tightening margin of the gasket should be taken into consideration.

Here, raw materials are filled into the inner surface of the mold 1 and molded. If the molded product A is a humid tube, centrifugal molding is performed by rotating the mold 1, and a packing 19 is inserted. In the case of floor slabs, the formwork 1 is made of plywood.

When the molding of the monthly molding is completed, remove the screw shaft 8 from the inserter 1-9 [7, remove the attachment/detachment jig 7 from the fixing jig 3, and remove the formwork 1
By removing the molded product A, the insert 9 is disposed. The space of the gap S formed after the gap forming part 14 has retreated is filled with mortar or the like as appropriate. Now, when the insert 9 is exposed to the outside, there is no point.

As shown in FIG. 1, the screw shaft 8 is integrated with the attachment/detachment jig 7. The screws 4 and IG of the fixing jig 3 and attachment/detachment jig 7 are screwed into the screw shaft 8.
If the direction and pinch are the same as the screws 25 and 26 of the insert 9, the screw shaft 8 can be unscrewed from the insert 9 at the same time by unscrewing the attachment/detachment jig 7, which improves workability and is suitable for centrifugal molding. It is safe because separation of the screw shaft 8 and insert 9 can be prevented. Providing the cutout 27 will make it even safer.

FIG. 2 shows another embodiment, in which a shaft hole 3 is provided in the attachment/detachment jig 7.
This is the case where the screw shaft 8 is a protruding portion that protrudes from the jig 7 of the bolt 32 inserted into the shaft hole 31. This bolt 32 has a head 33 at the end opposite to the screw shaft 8, and allows the bolt head 5 of the attachment/detachment jig 7 to have a width that matches the inner diameter of the bolt head 33, that is, to allow the bolt 32 to rotate. No width groove 3
Wear 4. Both jig screws 4 and 1G have the same direction and pitch as the screws 25 and 26 of the screw shaft 8 and insert τ). Therefore, if the bolt head 33 is fitted into the groove 34 and the screw shaft 8Vc insert 9 is screwed together and molded, the screw shaft 8 or If the removable part 7 becomes worn out, only it can be replaced.

FIG. 3 shows yet another embodiment in which the space forming part 14 is formed separately from the fitting part 12. This space forming part 14 has a truncated conical shape and has a shaft hole 41 which communicates with the shaft hole 3 which passes through the fitting part 12, and a hexagonal square groove 42 and, for example, a hexagonal square groove 42 on the fitting part j2 side of the shaft hole 41. , an inner groove 43 is provided from this bottom surface to the insert 9 side. This circular radius 43 is for fitting into a boss 44 protruding from the end surface E of the fitting portion 12 of the jig 7. And the insert 9 of this space forming part 14
A screw hole 45 is bored on the side to engage a screw 25' following the screw 25 of the screw shaft 8.

In this case, the bolt 32 is inserted into the shaft hole 31, the head 33 is fitted into the groove 34, the space forming part 14 is screwed onto the screw shaft 8, and the space forming part 14 is threaded onto the screw 25'.
Bring it into contact with E. The insert υ is screwed onto the screw shaft 8 protruding from the outer end of the spacer 14. When the attachment/detachment jig 7 is unscrewed, the bolt 32 also rotates at the same time (I), and if it comes off, the gap forming part 14 will remain in the molded product A. If they are fitted and pried, the gap forming part 14 will come off from the molded article A, leaving only the insert 1). Here, since the gap forming part 14 of the jig 7 is configured separately from the fitting part 12, by simply preparing the gap forming part 14 with various dimensions L1, the thickness of the molded product can be adjusted while the remaining parts are shared. Can respond to changes in L3,
It becomes economical.

In FIG. 4, the space forming part 14 is a cylindrical body whose outer diameter is the fitting part 12.
It has a structure that gradually decreases from the side to the insert 9 side, and is supported by fitting the large outer diameter side into a boss 51 protruding from the end surface E of the fitting part 12 of the attachment/detachment jig 7.

In this case, since the spacing forming part 14 is a cylindrical body, it can be provided at a very low cost by molding it with resin or the like, and its length L
By preparing various versions of l, the remaining parts can be shared as in the case of FIG.

In the drawings, G1 is a protrusion for preventing escape provided on the outer periphery of the insert 9, and 62 is a flange for the same purpose.

According to the present invention, on the axis of the attachment/detachment jig, one end of the screw shaft protruding outward is directed toward the service portion, and between the end face of the formwork through-hole fitting portion of the attachment/detachment jig, the service portion faces toward the end face side. The insert is screwed to the gap forming part having an outer diameter that gradually increases in diameter, and in this state it is inserted into the through hole of the formwork from outside the formwork and fixed to the formwork, so that the insert is not attached to the outside of the formwork. It can be placed inside the formwork from
The insert can be left in the molded product simply by unscrewing and removing the attachment/detachment jig and bolt, and the insert can be hidden from the outside by filling the space after the gap-forming part escapes with a filler material, which can be done by one person. It has a variety of features, such as being able to do a lot of work.

[Brief explanation of the drawing]

FIG. 1 is a powder-cut side view illustrating an embodiment of the insert arrangement method according to the present invention, and FIGS. 2 to 4 are half-cut side views of different embodiments of the same method. 1...Formwork, 2...Through hole, 3...Fixing jig, 4...
...Female thread, 6...Through hole, 7...Attachment/removal jig, 8...
・Screw shaft, 9...insert, 10...screw hole, 11...
... Service part, 12... Fitting part, 14... Space forming part. Patent applicant: Japan Life Co., Ltd. Agent: Ko Nakamura

Claims (6)

[Claims] (1) Drill a through hole in the formwork and attach the fixing jig to the outside surface, and attach the fixing jig to the screw shaft that protrudes outward at one end on the axis of the attachment/detachment jig, with the service part facing first and through the formwork of the attachment/detaching jig. A gap forming part having an outer shape whose diameter gradually increases toward the end face side is provided between the end face of the hole fitting part, and the insert is screwed together, and this insert is inserted into the through hole of the formwork from the outside to be attached and removed. Fit the fitting part of the jig into the through hole of the formwork and screw it into the fixing jig. After molding the material, remove the screw shaft from the insert and the attachment/detachment jig from the fixing jig, and attach the insert to the molded product. A method for placing inserts in molded products using formwork, which is characterized by inserts remaining inside the mold. (2) The screw shaft is configured integrally with the attachment/detachment jig, and the screws of both the fixing and attachment/detachment jigs have the same direction and pitch as the screws of the screw shaft and the insert, and the screw shaft can be inserted by unscrewing the attachment/detachment jig. A method for installing inserts in a molded product using a formwork according to claim (1), wherein the inserts are unscrewed from the bottom at the same time. (3) The attachment/detachment jig has a shaft hole, and a bolt whose screw shaft is separate from the attachment/detachment jig and has a head at the other end is inserted into the shaft hole of the attachment/detachment jig and protrudes from the end of the jig. It is a protruding part, and the screws for both fixing and detachment have the same direction and pitch as the threads of the screw shaft and insert, and the bolt head formed at the end of the attachment/detachment jig has the specified bolt head inner diameter. A groove of a suitable width is drilled, the bolt head is fitted into this groove when screwed to the insert, and the bolt is screwed back from the insert to the same position by unscrewing the attachment/detachment jig. Insert arrangement method for molded products using formwork as described in scope item (1). (4) Claim No. (1), (2) or (4) The gap forming part is an extension of the formwork through-hole fitting part of the attachment/detachment jig.
Molded products using formwork as described in item 3? Insert arrangement method in 1. (5) The space forming part of the attachment/detachment jig is formed separately from the formwork through-hole fitting part, and the forming part has a shaft hole that communicates with the shaft hole of the fitting part. The fitting part (1 (11) is provided with a groove for fitting with a boss protruding from the end face of the fitting part from the bottom surface to the insert side, and a screw to be threaded with the shaft of the bolt on the insert side. A method for arranging inserts in a molded product using a formwork according to claim (3) in which holes are provided. (6) Patent No. 3, in which one end of the spacing forming part of the attachment/detachment jig is a spacer that is fitted and supported by a boss protruding from the end face of the formwork through-hole fitting part? (j) Insert arrangement method for molded products using formwork as described in item (3) of the scope of requirements.