JPH0663526B2 - Connection structure of mold materials - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting mold members, which is used, for example, when connecting mold members to form a framework.

2. Description of the Related Art For example, as a method for linearly connecting mold members each having a dovetail groove that opens to the outside in the entire length direction, see, for example, Japanese Utility Model Laid-Open No. 55-12185.
The structure of Publication 9 is provided. In this conventional structure,
A hollow member is positioned between the insides of a pair of linearly arranged mold members, and the hollow member is fastened with the connecting member applied across the outer surfaces by a plurality of screw members, thereby connecting the connecting member. The flange part of the mold material is clamped by the hollow body, and the connections are made.

Problems to be Solved by the Invention According to the above-mentioned conventional type, since the connecting member and the hollow body are loosely fitted to the mold member, a positional deviation due to rattling easily occurs between the mold members, and it is like one piece. Cannot connect. Also, two members, a connecting member and a hollow body, are required, which is troublesome to handle and expensive. Further, since the connecting member projects from the outer surface of the mold member, it not only looks bad, but also easily collides with or is caught by another object.

An object of the present invention is to provide a connecting structure of mold members which can be automatically positioned relative to each other, need only one long member, and can be connected without protruding from the outer surface of the mold member. .

Means for Solving the Problems In order to achieve the above-mentioned object, the connecting structure of the mold material in the present invention is a structure for linearly connecting the mold material in which the dovetail groove opened to the outside is formed in the entire length in the length direction, The dovetail groove forms a slit portion opened to the outside by a pair of forming pieces,
A nut body is provided which can be inserted between the ends of both mold members in both dovetail grooves. The nut body is formed so that its side outer surface can be brought into contact with the inner surfaces of both forming pieces and from the outer surface of the intermediate portion. On the outside, a flange portion that can be densely inserted into the slit portion is provided so as to protrude, and a plurality of screw holes are formed in the intermediate portion of the nut body so as to penetrate inward and outward, and screwed into these screw holes. Provided with a screw body capable of abutting in the dovetail groove inner portion, the nut body, the flange portion is notched at both end portions in the longitudinal direction, and the notched portion is provided with a screw hole extending inward and outward, In addition to providing a ring-shaped spacer that can be opposed to the cutout portion from the outside,
A receiving surface, which the outer peripheral surface of the spacer can abut, is formed between the pair of forming pieces, and a bolt body is provided which can be screwed into the screw hole through the spacer.

Action In the configuration of the present invention described above, the linear connection between the mold members 1 and 2 is performed as follows. That is, first, with the screw body loosened, the nut body is slidably inserted into the dovetail groove end portion of the corresponding mold member. At the time of this insertion, the flange portion is projected into the dovetail groove. Then, the screw body is tightened to project inward so that the screw body abuts against the back of the dovetail groove.
Further tightening moves the nut body outward. As a result, the outer surface of the side portion is brought into pressure contact with the inner surface of the forming piece, so that both mold members and the nut body can be fixed. At that time, since the flange portion densely projects into the slit portions of both mold members, both mold members and the nut body, that is, both mold members are fixed without being relatively displaced.

Also, before tightening with the screw body, by tightening the bolt body that has passed through the spacer, the outer peripheral surface of the spacer is brought into contact with the receiving surface, which makes it possible to accurately measure the nut body in the length direction of both mold members. Easy positioning.

Embodiment One embodiment of the present invention will be described below with reference to the drawings.

The pair of mold members 1 and 2 which are to be connected in a straight line have the same shape and are manufactured by, for example, aluminum drawing. That is, the mold members 1 and 2 are rectangular rod-shaped, and one or a plurality of dovetail grooves 10 that are open to the outside are formed on each surface side in the entire length direction. And dovetail 10
The slit portion 11 opened to the outside of is formed between the pair of forming pieces 12. At both ends of both mold members 1 and 2 in the lengthwise direction, at a position inside the end faces 1a and 2a by a predetermined dimension, taper receiving surfaces 13 and 14 having an outward spread are counterbored between both forming pieces 12. It is formed by. Double dovetail groove 10 between the ends of both profiles 1 and 2
The nut body 20 that can be inserted over the inside is a long plate shape,
From the outer surface of the intermediate portion, a long rectangular flange portion 21 is projected outward. Here, the width W ₁ of the flange portion 21 is the same as or slightly smaller than the width W ₂ of the slit portion 11, so that the flange portion 21 can be densely inserted into the slit portion 11. The width of the nut body 20 is larger than the width W ₁ of the flange portion 21, so that the outer surface of the side portion is formed as a pressing surface 20a that can be brought into contact with the inner surface 12a of the forming piece 12. A plurality of (two in the embodiment) screw holes 22 and 23 are provided in the middle portion of the nut body 20 where the flange portion 21 exists in the inward and outward directions, and these screw holes 22 and 23 are provided.
The screw bodies 24 and 25 that are screwed into the are freely contactable with the dovetail groove inner portion 10a. The nut body 20 is in a state in which the flange portions 21 are cut off at both ends in the lengthwise direction, and the nuts 20 are screwed inward and outward in a position facing the center of formation of the tapered receiving surfaces 13 and 14 in this cutout portion. Holes 26 and 27 are provided therethrough. These screw holes 26,27
Are provided with ring-shaped spacers 30, 31 having outer tapered outer surfaces 28, 29 that can be opposed to each other from the outside and can abut the tapered receiving surfaces 13, 14, and further the spacers 30,
Bolt bodies (screws or the like) 32, 33 that can be screwed into the screw holes 26, 27 through 31 are provided.

Next, the work of connecting the mold members 1 and 2 in the above embodiment will be described. First, the spacers 30 and 31 are opposed to the screw holes 26 and 27 of the nut body 20, and the bolt body 3 passed through the spacers 30 and 31 from the outside.
2, 33 are screwed into the screw holes 26, 27 for temporary fixing. At this time, the screw bodies 24 and 25 are loosened to the outside. Next, the nut body 20 is inserted into the dovetail groove 10 at the end of the mold member 2.
The flange portion 21 is projected into the slit portion 11 by this insertion movement. Further, the insertion is performed until the spacer 31 faces the taper receiving surface 14. When the bolt body 33 is tightened in this state, the taper outer surface 29 is brought into pressure contact with the taper receiving surface 14 and self-aligning is performed, so that the nut body 20 is positioned in the longitudinal direction with respect to the mold member 2. Done exactly. Next, when the screw body 25 is tightened, the screw body 25 projecting inward abuts the dovetail groove inner portion 10a, and thereafter, acts to move the nut body 20 outwardly, thereby pressing the pressing surface 20a. It is pressed against the inner surface 12a of the forming piece 12. Therefore, the clamping operation by the bolt body 33 and the pressure contact operation by the screw body 25 can fix the mold member 2 and the nut body 20. At that time, since the flange portion 21 projects into the slit portion 11 of the mold material 2 in a dense manner, the mold material 2 and the nut body 20 are fixed without being displaced relative to each other. Next, a dovetail groove 10 at the end of the mold material 1
The exposed portion of the nut body 20 is inserted therein. The flange portion 21 is projected into the slit portion 11 by this insertion movement. The insertion is performed until the end surfaces 1a and 2a come into contact with each other, whereby the spacer 30 faces the taper receiving surface 13. When the bolt body 32 is tightened in this state, the taper outer surface 28 is brought into pressure contact with the taper receiving surface 13 and self-aligning is performed, thereby positioning the nut body 20 with respect to the mold material 1 in the longitudinal direction. In addition to being accurately performed, both end faces 1a and 2a are brought into pressure contact with each other. Next, when the screw body 24 is tightened, the inwardly projecting screw body 24 contacts the dovetail groove inner portion 10a, and thereafter acts to move the nut body 20 outward to form the pressing surface 20a. It is pressed against the inner surface 12a of the piece 12. Therefore, the clamping action of the bolt body 32 and the pressure contact action of the screw body 24 can fix the mold member 1 and the nut body 20.
At this time, since the flange portion 21 is densely projected into the slit portion 11 of the mold material 1, the mold material 1 and the nut body 20 are fixed without being relatively displaced.

As described above, the pair of mold members 1 and 2 are linearly connected to each other via the nut body 20 without any relative displacement.

In the above-described embodiment, the mold member 2 and the nut body 20 are fixed, and then the nut member 20 and the mold member 1 are fixed. However, the mold member 1 side may be fixed first, or both may be fixed. They may be fixed one after another (almost at the same time). Further, in the above-mentioned embodiment, two nut bodies 20 are connected to each other on a pair of surfaces, but a total of four nut bodies 20 are connected, but this is one on each pair of surfaces and a total of two nut bodies 20. For example, the number of pieces to be used can be arbitrarily determined.

By connecting the mold members 1 and 2 as described above, for example, as shown in FIG.
A framework 35 can be constructed as shown in FIG.

Advantageous Effects of Invention According to the present invention having the above-described configuration, the flange portion of the nut body is densely projected into the slit portion, so that the nut body and both mold members do not cause rattling, respectively, and are relatively positioned. It can be fixed without being displaced, so that both mold members can be automatically positioned relative to each other and can be accurately connected. Moreover, since the long component is only the nut body, it is easy to handle, the connection structure can be provided at low cost, and the connection member including the nut body does not protrude from the outer surface of the mold material, which makes it look good. In addition to being able to do so, it is possible to eliminate the collision and catching of other objects.

Also, before tightening with the screw body, by tightening the bolt body that has passed through the spacer, the outer peripheral surface of the spacer is brought into contact with the receiving surface, which makes it possible to accurately measure the nut body in the length direction of both mold members. Easy positioning.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an exploded perspective view,
FIG. 2 is a front view in a connected state, FIG. 3 is a side view with the same portion cut away, FIG. 4 is a cross-sectional plan view, FIG. 5 is a front view of a framework as an example of use, and FIG. 6 is the same. It is a side view. 1,2 …… Mold material, 1a, 2a …… End surface, 10 …… Dovetail groove, 10a …… Dovetail groove back part, 11 …… Slit part, 12 …… Forming piece, 12a …… Inner surface, 13,14 …… Taper receiving surface, 20 …… Nut body, 20a ……
Pressing surface (side outer surface), 21 …… flange part, 22,23…
… Screw hole, 24,25 …… Screw body, 26,27 …… Screw hole, 28,29
…… Tapered outer surface, 30,31 …… Spacer, 32,33 …… Bolt body, 35 …… Frame assembly, W ₁ …… Flange width, W ₂ …… Slit width.

Claims (1)

[Claims] 1. A structure for linearly connecting mold members each having a dovetail groove opened to the outside in the entire length in the longitudinal direction, wherein the dovetail groove has a slit portion opened to the outside by a pair of forming pieces. Then, a nut body is provided which can be inserted between the ends of both mold members in the dovetail groove. The nut body is formed so that the outer side surface of the nut body can be brought into contact with the inner surfaces of both the forming pieces and the intermediate section. From the outer surface to the outer side, a flange portion that can be densely inserted into the slit portion is projected, and a plurality of screw holes are formed in the middle portion of the nut body so as to penetrate inward and outward, and screwed into these screw holes. And a screw body that can be brought into contact with the inner part of the dovetail groove is provided, and the nut body has flange portions cut away at both ends in the lengthwise direction, and screw holes extending inward and outward are formed through the cutout portions. Then, a ring-shaped spacer that can oppose from the outside is provided in the cutout portion, and Coupling structure of the mold member outer peripheral surface abutting freely receiving surface formed over a pair of forming pieces, characterized in that a screwed freely bolt member into the threaded hole through the spacer.