KR20020082055A - Anchor rivet process and metal mold - Google Patents

Abstract

PURPOSE: A method and dies for manufacturing an anchor rivet are provided to improve productivity and quality of products by automatically forming a crossed shaped notch groove that is formed on an end part of a river body using dies during manufacturing process. CONSTITUTION: In a method for manufacturing an anchor rivet comprising cutting and supplying process of supplying a material to a unit part so that the material is cut by a cutting unit part, and transferring the cut member to a first die(20), shape forming process of supplying the member to a shape forming hole so that a shape is formed by hitting the member with a punch, rivet forming process in which a wedge hole penetrating the head of the rivet forms up to a body of the member by second punching of a punch pin in the punch, and assembly process of inserting a wedge into the wedge hole, the method for manufacturing the anchor rivet comprises notch groove forming process in which the member is supplied into a forming hole(21) of the first die(20) to be punched into the forming hole(21) by the cutting and supplying process so that a notch groove into which a cutter(25) is inserted is formed at an end part of the member by the cuter(25) inside the first die(20); and shape and wedge hole forming process of supplying the member on which the notch groove is formed by the notch groove forming process into a second die so as to form a shape of the member and the wedge hole into the member.

Description

Anchor rivet process and metal mold

The present invention relates to an anchor rivet, and more particularly, to an anchor rivet manufacturing method and a mold for automatically molding the anchor notched grooves outwardly by the wedge.

As is well known, the rivet is composed of a rod-shaped body unit integrally with the head portion to easily fasten the member and the member, and the rivet hits the end of the body while the rivet penetrates the member and the member so that the end is extended outward. Therefore, the coupling between the members by preventing the separation from the fastening hole of the member.

This conventional rivet has a disadvantage that the aesthetic appearance is not smooth because the outward deformation caused by the strike with the difficulty of hitting the end.

In addition, the rivet is capable of performing the above-described striking operation by forming a sufficient space capable of striking the back surface of the member when joining the member and the member.

However, when using rivets for building, aircraft, ships, etc., there is no space for hitting the end of the rivets, or when directly engaging the body, the end of the rivets should be extended outward from the front, not the rear part of the rivets. Work is required.

Accordingly, the improved anchor rivet constitutes a body portion integral with the head portion, forms a chain hole from the head to the body portion, and forms a crisscross groove at the end of the body.

These anchor rivets are driven by the wedges exposed to the head portion so that the wedge extends the end of the body outwards, and at this time, the cutout grooves cut into the crisscross shape are cut into equal parts and each extension portion is extended outward. Compression fastening to the inner surface of the fastening hole is easy to work and to obtain a strong fastening force.

In the manufacture of such anchor rivets, a process of cutting iron wires (brass, copper, aluminum or alloy materials, etc.) composed of rolls according to size along with drawing, and the cutting member is formed into a primary mold, that is, a body integral with the head. Along with the forming process constituting the portion, and forming a chain hole in the head and body portion of the molded rivet.

Then, after forming the notch grooves by hand in the molded rivet body portion has been fastened to the chain holes.

The anchor rivet is composed of an anchor rivet formed by forming a notch groove equally extended with the expansion portion outwardly by the wedge by putting a wedge fastened to the rivet.

In the conventional manufacturing process of such anchor rivets, the rivets are vertically erected vertically by hand after forming the rivets, and the vertical and horizontal crisscross grooves are formed by the cutter on a secondary stage.

As a result, the work is very difficult and there is a high defect rate due to lack of precision along with a lot of time spent and labor shortage.

In addition, as described above, there is also a problem of low economic efficiency because there is no mass productivity by work by hand.

The present invention has been made in order to improve the above-described closed end, in particular, by forming a crisscross notched groove formed in the end of the rivet body automatically by a mold in the manufacturing process to facilitate the manufacture of anchor rivets and to obtain mass productivity And it is an invention for the purpose of achieving quality improvement and fast productivity by preventing defects and maintaining uniformity by automatic molding.

1 is an exploded perspective view of the first mold of the present invention.

2 is an explanatory view of a state in which the cut material of the present invention is supplied to a first mold.

Figure 3 is an explanatory view of the cut groove forming by the first mold of the present invention.

Figure 4 is an explanatory view showing a pulled-out state of the member after forming the notched groove of the present invention.

Figure 5 is a shape molding process explanatory drawing by the second mold to the member formed of the notched groove of the present invention.

6 is a process explanatory diagram for molding a chain hole in the molded rivet of the present invention.

Figure 7 is an explanatory view of the rivet pulled out state is configured by the chain hole according to the present invention.

8 is a cross-sectional view of a state in which a wedge is fastened to a rivet constructed by the present invention.

9 is a cross-sectional view of a use state of the present invention.

10 is a bottom perspective view of the present invention.

Explanation of Signs of Major Parts of Drawings

10; Member 11; Cutout groove 20; 1st mold

21; Molding hole 22; Guide 23; Fastener

24; Fastening ring 25; Cutter 26; Fastening member

27; Second mold 28; Shaping hole 30; Pin punch

31; Seal 32; Punch 33; Punch pin

40; Rivet 41; Head 42; Wrecker

43; Body

BRIEF DESCRIPTION OF THE DRAWINGS The embodiments will be described in more detail by the accompanying drawings of the present invention for achieving the above object.

1 is an exploded perspective view of the first mold of the present invention, Figure 9 is a cross-sectional view of the use state of the present invention and Figure 10 shows a bottom perspective view of the present invention.

An embodiment of the present invention is shown in the accompanying drawings the manufacturing process of the anchor rivet shown in the drawings.

1st process

2 is an explanatory view showing a state in which the material to be supplied is cut and supplied to the first mold, and when the raw material, which is not shown, is supplied to the apparatus, the apparatus is cut along with the length of the length set by the cutting apparatus. A cutting and supplying step of transferring the finished member 10 and supplying it to the first mold 20,

2nd process

The cutting groove 11 is formed by supplying the member 10 to the molding hole 21 of the first mold 20 by the cutting supply process.

The first mold 20 is formed between the front and rear fastening ring 24 to form a molding hole 21 in the fastening hole 23 by integrally forming the guide hole 22 and the extended fastening hole 23 in the center of the mold. One or more cutters 25 were fastened to each other, and the cutters 25 were fixed with respective divided fastening members 26.

Accordingly, as shown in FIG. 3, the cutter 10 in the first mold 20 is punched into the first mold 20 and the molding hole 21 by the pin punch 30. The notch groove 11 into which the cutter 25 is inserted in the end part of the member 10 is shape | molded,

A notch groove forming process of pushing out the member 10 with the sealing 31 after completing the notching groove 11 molding;

3rd, 4th process

The notched groove 11 is formed by the notched groove forming process, and the drawn member 10 is transferred to the second mold 27, which is the shape forming process of FIG.

Punch pins 33 in the punch 32 together with a third process of supplying the conveyed member 10 to the shaping hole 28 of the second mold 27 and striking the punch 32 to form a shape. A rivet molding process in which the anchor rivets are formed and drawn out in a fourth process in which a chain hole 42 penetrating through the rivet 40 head 41 by the secondary punching is formed up to the body 43;

5th process

The assembly process of fitting the wedge 44 to the wedge 42 of the rivet 40 which perforated the body 43 and the wedge 42 which formed the head 41 and the notch 11 by the above. It is made of.

Reference numeral 50 shows a fastening member to be fastened.

According to the present invention by the manufacturing method as described above, after the shaping groove 11 formed in the rivet body is automatically formed in one or more, or cross-shaped by the cutter 25 of the first mold 20 during the manufacturing process It is to simply improve the disadvantages of the conventional configuration of the cut groove by hand.

Accordingly, the present invention is a useful invention that is easy to manufacture the anchor rivets and can be obtained by improving the productivity and productivity can be obtained by maintaining the uniformity with the features to obtain mass productivity and prevention of defects by automatic molding.

The present invention is automatically formed by the cutter configured in the first mold in the manufacturing process of the crisscross notched groove formed in the end of the rivet body in order to prevent the defect and the productivity decrease caused by manually forming the notched groove after the conventional shape molding By making it easy to manufacture anchor rivets, it is a useful invention that can improve the quality and fast productivity by preventing mass defects and maintaining uniformity by the effect of obtaining mass productivity and preventing the automatic molding.

Claims (2)

A cutting and supplying step of supplying the raw material to the apparatus part and transferring the cut member 10 together with the cutting by the cutting apparatus part to supply the first mold 20; The rivet 40 head is subjected to secondary punching by the punch pin 33 in the punch 32 together with the step of supplying the member 10 to the shaping hole 28 and hitting the punch 32 to form the shape. A rivet molding process in which the chain holes 42 penetrating the 41 are formed up to the body 43, In the usual method consisting of an assembly step of fitting the wedge 44 to the wedge 42, The member 10 is supplied by the cutter 25 in the first mold 20 by supplying the member 10 to the molding hole 21 of the first mold 20 by the cutting and supplying process and punching into the molding hole 21. A notch groove forming process for forming a notch groove 11 into which the cutter 25 is inserted at an end thereof; A method of manufacturing an anchor rivet, characterized in that the cutting groove forming process is formed by supplying a member constituting the notched groove (11) to the second mold to shape the shape and chain holes (42). The first mold 20 is formed between the front and rear fastening ring 24 to form a molding hole 21 in the fastening hole 23 by integrally forming the guide hole 22 and the extended fastening hole 23 in the center of the mold. Anchor rivet manufacturing mold made of a first mold configured to fasten the above cutter (25) and the cutter (25) is fixed with each divided fastening member (26).