JPH06106291A - Device for caulking rivet - Google Patents

Abstract

PURPOSE:To provide simple switching mechanism for an invoking movement and a caulking movement, in a caulking device for caulking a rivet by two reciprocating movements of the invoking process and the caulking process for the rivet. CONSTITUTION:On the outer peripheral surface of a pressurizing member 16, a cam groove 21 is engraved on the whole periphery and a pin 22 protruded on a pressurizing device body 13 is slidably inserted, and according to the rise/ fall of the pressurizing member, the pressurizing member is turned at 180 deg. angle pitch. Both end parts of the cam groove are endlessly communicated through the cam groove. Into a through-hole 25a pierced in advance on piled works to be tied, the rivet 20 is inserted from an upper part, and by working the caulking device in the condition of facing a dent part 16b formed to the shape of the rivet head part arranged in the pressurizing member to an access hole 23 in a receiving base 14, the rivet is invoked. Successively, by ascending the pressurizing member, the pressurizing member is turned at 180 deg. angle, and by successive lowering, the rivet is caulked between the rivet and the abutting surface 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention calls a rivet by a reciprocating motion related to a calling process between a pressure member and a pedestal, which are arranged opposite to each other, and then performs a reciprocating motion related to a caulking process. The present invention relates to a caulking device for caulking.

[0002]

2. Description of the Related Art Conventionally, in a caulking device of this type, a pressing member 1 and a pedestal 2 are arranged so as to face each other as shown in FIG. 3, and the pressing member 1 slides in the directions of arrows 3 and 4. It is supported freely and driven by a hydraulic mechanism (not shown). The pedestal 2 has a calling hole 5 for calling a rivet on one end side thereof and a contact surface 6 for rivet crimping on the other end side thereof, respectively, with respect to the moving direction of the pressing member 1. And is reciprocally slid in a right angle direction (arrows 7 and 8 directions). In the crimping device according to the above configuration, the pressure member 1
Under the condition that the cradle 2 is positioned below the calling hole 5 so as to face the through hole 9 between the pressing member 1 and the cradle 2.
Steel 11 into which a rivet 10 is inserted, and the steel 11
The sheet metal 12 to be fastened is inserted in a state of being overlapped. Then, the pressing member 1 is slid in the direction of the arrow 4 (see (A) of the same figure), so that the rivet 10 is moved.
The head portion 10a of the rivet 10 is also pressed in the direction of the arrow 4 by the pressing member 1, and the shaft portion 10b of the rivet 10 penetrates the metal plate 12 and is called to the calling hole 5 side. After that, the pressure member 1 is slid in the direction of arrow 3, so that the pressure member 1 is moved to the head 10a of the rivet 10.
The pedestal 2 relatively moves in the direction of the arrow 4 while being in contact with. By this operation, after the shaft portion 10b of the rivet 10 is pulled out from the calling hole 5, the pedestal 2 is moved to the arrow 7
It is driven to slide in the direction (see FIG. 2B). When the pressing member 1 is again slid in the direction of arrow 4, the pedestal 2 relatively moves in the direction of arrow 3, and the shaft portion 10b of the rivet 10 and the pedestal 2 come into contact with each other. The surface 6 abuts. In addition, the pressing member 1 has an arrow 4
By being driven to slide in the direction, the rivet 1
The shaft portion 10b of 0 is crushed and the rivet 10 is crimped. As a result, the steel material 11 and the sheet metal 12 are fastened.

[0003]

However, the conventional caulking device as described above has a problem that the mechanism for supporting the pedestal 2 slidably in the directions of arrows 7 and 8 is complicated. . Therefore, the present invention was devised in view of the above circumstances, and an object thereof is to provide a rivet crimping device capable of calling and crimping a rivet with a relatively simple mechanism.

[0004]

In order to achieve the above-mentioned object, the main means adopted by the present invention is the gist thereof in the calling process between the pressure member and the pedestal arranged oppositely. In a caulking device for caulking the rivet in a caulking step after calling the rivet, a portion that rotatably supports the pressing member around its axis and is eccentric to the axis of the pressing member. A recessed portion that fits with the head of the rivet is formed in the pedestal, and the pedestal is provided with a rivet calling hole that is eccentric with respect to the axis of the pressing member and the rivet shaft. A caulking portion that abuts is provided side by side, and the head of the rivet is fitted into the recessed portion of the pressing member to call the rivet between the pressing member and the calling portion of the pedestal. After that, rotate the pressure member around the axis. The serial recess is rivet swaging apparatus according to point pressed between the rivet with the caulking portion of the pressure member and the receiving base is fitted into the head of the rivet.

[0005]

In the rivet crimping device having the above structure, first, the rivet is called between the pressing member and the calling portion of the pedestal with the head of the rivet fitted in the recess of the pressing member. Is done. After the rivet is called as described above, the pressure member is rotated around its axis,
The rivet is clamped between the pressing member and the caulking portion of the pedestal in a state where the head of the rivet is fitted in the recess. As a result, the rivets are crimped. In this way, by rotating the pressurizing member about its axis, the rivet calling process and the caulking process are switched, so that the mechanism can be simplified.
That is, the rotation mechanism can be mechanically relatively simpler than the slide mechanism.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the accompanying drawings for the understanding of the present invention. The following embodiments are examples of embodying the present invention and are not intended to limit the technical scope of the present invention. FIG. 1 is a side view of an essential part including a partial cross section of a rivet caulking device according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining an operation procedure of the rivet caulking device. In the rivet crimping device according to this embodiment, as shown in FIG. 1, a pressurizing device main body 13 and a cradle main body 14 are arranged opposite to each other and are integrally connected by an arm 15. The pressurizing device main body 13 has a cylindrical cylinder structure, and a columnar pressurizing member 16 is slidable therein in the directions of arrows 17 and 18,
Further, it is supported rotatably around its axis 16a (direction of arrow 19). The pressure member 16 is driven by a hydraulic mechanism (not shown). At the tip end of the pressing member 16 which is eccentric with respect to the axis 16a, a concave portion 1 having a substantially spherical shape that fits with the head 20a of the rivet 20 is formed.
6b is engraved. Further, a cam groove 21 is formed on the outer peripheral surface of the pressing member 16 over the entire circumference thereof, and a pin 22 protruding from the pressing device body 13 slides in the cam groove 21. It is freely inserted. The cam groove 2
1 is spirally formed around the axis 16a of the pressing member 16 at a pitch of 180 ° so that it can be repeatedly moved up and down, and both ends thereof communicate endlessly through linear cam grooves. Has been done.

Therefore, the pressing member 16 is attached to the arrow 17,1.
By operating in eight directions, the pressing member 16 is restricted in its operation by the pin 22 and is rotated at a pitch of 180 °, and is linearly operated at both ends thereof. The pressing member 1 is attached to the cradle body 14.
6 is eccentric with respect to the shaft center 16a of the rivet 6, and a calling hole 23 (calling part) for calling the rivet and the shaft part 20 of the rivet 20
An abutting surface 24 (caulking portion) that abuts the end surface of b is arranged in parallel. The calling hole 23 and the contact surface 24 are in a 180 ° pitch relationship with respect to the axis 16a of the pressing member 16. Next, the operation procedure of the rivet crimping device configured as described above will be described with reference to FIGS. 1 and 2. First, the steel material 25 to be fastened and the sheet metal 26 are overlapped with each other, and the through hole 25a previously drilled in the steel material 25 is formed.
The rivet 20 is fitted into the above from above. Then, the rivet caulking device is carried with the concave portion 16b of the pressing member 16 and the calling hole 23 of the cradle main body 14 facing each other, and the rivet 20 is inserted into the concave portion 16b.
Head portion 20a is fitted (see FIG. 1). Subsequently, the pressure member 16 is driven in the direction of arrow 17,
The pedestal body 14 is relatively moved in the direction of the arrow 18, and the pedestal body 14 is brought into contact with the lower surface side of the sheet metal 26 (see FIG. 2).
(See (A)). In this case, the pressing member 16 has the cam groove 2
By being guided by the pin 22 fitted in the linear portion of No. 1, it operates linearly without rotating around the axis 16a. Further, when the pressure member 16 is driven in the direction of the arrow 17, the rivet 20 is pinched between the pressure member 16 and the pedestal body 14, and the shaft portion 20b of the rivet 20 is fixed to the sheet metal 26. And is called into the calling hole 23 of the cradle main body 14.

Thereafter, the pressing member 16 is driven in the direction of the arrow 18, so that the pedestal body 14 is relatively moved in the direction of the arrow 17 and separated from the lower surface side of the sheet metal 26 (see FIG. See B)). Further, when the pressing member 16 is driven in the direction of the arrow 18, its operation is restricted by the pin 22 that engages with the spiral portion of the cam groove 21, and the pressing member 16 moves around the axis 16a in the arrow direction. 180 towards 19
° Rotated. In this case, the concave portion 1 of the pressing member 16
Since the head portion 20a of the rivet 20 is fitted to the 6b, the caulking device itself is relatively swung in the opposite direction about the rivet 20. In this way, the concave portion 16b of the pressing member 16 and the contact surface 24 of the pedestal body 14 are in a positional relationship of facing each other. When the pressing member 16 is driven in the direction of the arrow 17, the pressing member 16 is linearly moved without being rotated while its operation is restricted by the pin 22 located in the linear portion of the cam groove 21. Works properly. Then, the pressing member 16
The rivet 20 is clamped and crimped between the recessed portion 16b of the base and the contact surface 24 of the pedestal body 14 (FIG. 2C).
reference). As described above, the pressing member 16 is attached to the shaft center 16a thereof.
The mechanism can be simplified by adopting a structure in which the calling process and the caulking process are switched by rotating the device around. That is, the rotation mechanism can be mechanically simpler and more compact than the slide mechanism as in the conventional device. In the above embodiment, the case where the pressing member 16 itself can be rotated around the axis 16a according to the movement of the pressing member 16 in the directions of the arrows 17 and 18 has been described as an example. However, for example, a gear mechanism is provided on the base side of the pressure member 16 and the pressure member 16 is driven separately.
It is also possible to configure so as to rotate around the axis 16a.

[0009]

As described above, the present invention provides a caulking device for caulking a rivet in a caulking process after calling a rivet in a caulking process between a pressure member and a pedestal that are arranged opposite to each other. A dent portion for supporting the pressure member rotatably around its axis and forming a recess for fitting with the head of the rivet at a portion of the pressure member eccentric with respect to the axis center. A calling portion having a hole for calling a rivet, which is eccentric with respect to the axis of the pressing member, and a caulking portion that abuts on the shaft portion of the rivet are arranged side by side on the base, and the concave portion of the pressing member is provided. After the head of the rivet is fitted and the rivet is called between the pressing member and the calling portion of the pedestal, the pressing member is rotated about the axis to cause the depression. Part of the rivet head fitted to the pressure member and the pedestal caulking Since a rivet swaging apparatus characterized by nipping the rivet with the, it is possible to perform a call and caulking the rivet with a relatively simple mechanism.

[Brief description of drawings]

FIG. 1 is a side view of an essential part including a partial cross section of a rivet crimping device according to an embodiment of the present invention.

FIG. 2 is a view for explaining an operation procedure of the rivet crimping device.

FIG. 3 is a view for explaining an operation procedure of a conventional rivet crimping device.

[Explanation of reference numerals] 13 ... Pressurizing device main body 14 ... Cradle main body 16 ... Pressurizing member 16a ... Shaft center 16b ... Recessed portion 20 ... Rivet 20a ... Head 20b ... Shaft portion 21 ... Cam groove 22 ... Pin 23 ... Call Hole (calling part) 24 ... Contact surface (caulking part)

Claims (1)

[Claims] 1. A caulking device for caulking a rivet in a caulking process after a rivet is called in a caulking process between a pressure member and a pedestal, which are opposed to each other, and the pressing member has an axial center. A dent that fits with the head of the rivet is formed in a portion of the pressing member that is rotatably supported and that is eccentric with respect to the axis of the pressing member. A calling part having a hole for calling the rivet, which is eccentric with respect to the center, and a caulking part abutting on the shaft part of the rivet are arranged in parallel, and the head part of the rivet is fitted into the recessed part of the pressing member. After calling the rivet between the pressing member and the calling part of the cradle, the pressing member is rotated around the axis to fit the head of the rivet into the recess. The rivet is clamped between the pressed member and the caulking part of the pedestal. A rivet crimping device characterized by: