JPS6245010B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that inserts a rivet fed by high-pressure air from a bar feeder into a mating hole and caulks the rivet. The present invention provides a caulking device that can be applied even in cases where it is required.

A conventional crimping device of this kind that only inserts the rivet into the mating hole uses high-pressure air to insert the rivet R into the base c provided in the main body b through the supply pipe a, as shown in Fig. 1. The rivet R is then gripped by the base c, and the pushing tool d positioned at the top is driven by an actuator such as an air cylinder to insert the rivet R into a predetermined mating hole. However, when performing caulking work at the same time with this device, the diameter of the caulking tool is restricted by the neck diameter of the rivet R, so there is a limit to its size, and furthermore, there is a limit to the diameter of the caulking tool. The length of the caulking tool increases because the length of the caulking tool increases. Therefore, if the load required for caulking is small, such as with a tubular rivet or a relatively small diameter rivet, there is no problem, but if the caulking load becomes large, a problem arises in the strength of the caulking tool.

The present invention has been made to address and solve the above-mentioned conventional problems, that is, it can be applied even when a large caulking load is required.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a device for simultaneously inserting and caulking a rivet according to the present invention will be described in detail below with reference to the accompanying drawings.

1 is a yoke, and a hydraulic cylinder 2 is installed on the upper side of this yoke.
is fixed vertically with a nut 3. A rod 4 from the hydraulic cylinder 2 is provided with a screw 4' at its tip, and a guide holder 5 is screwed onto this. The upper end of a caulking tool 6 is inserted into the lower part of the guide holder 5 and fixed with a set screw 7. In addition, the air cylinder 8 is attached to the guide holder 5 with an L fitting 9.
It is installed by

The tip of the rod 8' of the air cylinder 8 is connected to the insert 10 of the rivet R, and the insert 10 is moved up and down.

A feed pipe 11 is swingably supported on the insert body 10, and an elastic body 12 such as a spring is applied to the feed pipe 11 so that the feed pipe 11 is always in contact with the caulking tool 6. Guide rods 14, 14 are implanted to be guided by guide holes 13, 13 formed in the guide holder 5.

Further, an elastic body 15 such as a spring is interposed between the guide holder 5 and the insert body 10, and this spring 1
5 constantly pushes down the insert 10 and balances the force with which the air cylinder 8 pulls up the insert 10 to keep the insert 10 in its normal position. Insert 1
In the lower part of the rivet 0, claw bodies 17, 17, which are divided into two halves and whose upper ends are pivoted 16, 16, are positioned, and the rivet R, which has been pressure-fed, is gripped by the claw bodies 17, 17. The inner lower part of the claw bodies 17, 17 is formed into a tapered shape, and when the caulking tool 6 descends, the lower end of the caulking tool 6 is lowered along this taper, and the claw bodies 17, 17 are pivoted to the left and right. , 16 to open. Furthermore, the nail body 1
7 and 17 are elastic bodies 18 such as leaf springs in the direction of contraction,
18, so that it always contracts.
Further, on one side of the claws 17, 17, a U-shaped blocking plate 19 is attached to the insert 10 with its lower end protruding downward from the claws 17.

A lower caulking tool 20 is removably provided on the yoke 1 directly below the caulking tool 6, and an elastic body 21 such as a spring that supports the workpiece W is provided on the lower caulking tool 20. The workpiece W is held floating above the yoke 1. Further, the elastic body 21 is stronger than the force with which the claws 17 are opened and the rivet is inserted.

The present invention has the above-mentioned configuration, and first, the rivet R is the third
As shown in the figure, the rivet R is raised by the air cylinder 8 attached to the guide holder 5, and its position is adjusted by the elastic body 15 and the air cylinder 8 so that the force of both is adjusted so that the rivet R is in the normal position. There is. Also, the piston 8'' of the air cylinder 8 is at a position advanced beyond the return limit. In this position, the rivet R supplied through the feed pipe 11 by force feeding from the parts feeder is held at the neck by the claws 17, 17, Moreover, the upper part is held by a caulking tool 6, and from this state shown in FIG. When it hits the upper workpiece W, the claw bodies 17, 17 are caulked by the caulking tool 6.
, the insert body 10 gradually opens, and at the same time, the insert body 10 rises relative to the caulking tool 6 against the elastic body 15, and the piston 8'' of the air cylinder 8 also rises. Further descending, the rivet R is separated from the claws 17, 17 and inserted into the workpiece hole. (See Fig. 5) After the rivet R is inserted into the hole of the workpiece W, the rod 4 is inserted into an elastic body such as a spring. 21, and the rivet R is crimped by the lower crimping tool 20 and the upper crimping tool (see Fig. 6).
When caulking is completed, the hydraulic cylinder 2 raises the caulking tool 6, while the air cylinder 8 lowers the insert 10, and when the hydraulic cylinder 2 reaches the upper limit position and the insert body 10 reaches the lower limit, caulking is performed. The supply port of the feed pipe 11 that was along the tool 6 is located directly above the contracted claw bodies 17, 17, and at this timing, the rivet R is force-fed through the feed pipe 11 and inside the claw bodies 17, 17. supply to. (See Figure 7)
After this supply, the insert 10 is raised by the air cylinder 8, and during this time the rivet R is moved by the claws 17 and 1.
7 grips the neck, and the feed tube 11 swings around the fulcrum along the caulking tool 6 and is released, returning to the original state shown in FIG. 3 and completing one operation. This operation is repeated to perform the tightening operation.

As described above, the present invention is based on a riveting type caulking device, and the feed pipe 11 is connected to the insert body 10.
Since the rivet R is supplied by lifting and lowering the insert 10 by pivoting it so that it can swing, the rivet R is not affected by the size of the crimping tool 6, so the crimping tool 6 should be made sufficiently strong. Can be done. Therefore, the insertion of the rivet, which requires a large load, and the caulking can be performed at the same time, and the rivet is automatically inserted and the series of operations is extremely time-saving. Furthermore, the rivet R is not only held by claws 17, 17 which are divided into two parts and can be opened.
Since the upper part is held down by the lower end of the caulking tool 6, the position of the rivet is stabilized.

[Brief explanation of the drawing]

The drawings show an embodiment of a device for simultaneously inserting and caulking a rivet according to the present invention; FIG. 1 is a sectional view of a part of a conventional rivet insertion device, FIG. 2 is a side view, and FIG. FIG. 4 is an enlarged sectional view of the main parts, FIG. 4 is a front view of FIG. 3, FIGS. 5 to 7 are explanatory diagrams of the operation, and FIG. , FIG. 6 is a state diagram during caulking, and FIG. 7 is a state diagram when the rivet is force-fed after caulking. 1...Yoke, 2...Hydraulic cylinder, 3...Nut, 4...Rod, 4'...Screw, 5...Guide holder, 6...Clinching tool, 7...Set screw, 8...
...Air cylinder, 8'...Rod, 8''...Piston, 9...L fitting, 10...Insert, 11...
Feeding pipe, 12... Elastic body, 13... Guide hole, 14
... Guide rod, 15 ... Elastic body, 16 ... Pivotal part,
17...Claw body, 18...Elastic body, 19...Blocking plate, 20...Lower caulking tool, 21...Elastic body, R
...Rivets, W...Work.

Claims (1)

[Claims] 1. A guide holder equipped with a guide section for guiding the rivet insert is attached to a rod from a hydraulic cylinder provided on the upper side of the yoke, and an air cylinder for raising and lowering the rivet insert, and a caulking tool at the bottom are attached to the guide holder. The insert body also has a guide rod on the upper surface that slides into the guide portion of the guide holder;
A feed tube is provided which is pivotally supported so that its tip is always in contact with the caulking tool, and furthermore, the lower part is divided into two parts, each of which has an upper part pivoted to be able to open and close to the insert body. The lower part of the corresponding inner surface is tapered, and a claw body is provided with an elastic body that acts in the contraction direction, and a blocking plate is installed on one side of the claw body with the lower end protruding from the claw body, Furthermore, an elastic body is interposed between the insert body and the guide holder to maintain the position of the insert body in the correct position, and a lower caulking element is provided directly below the caulking element, and this lower caulking element A device for inserting and caulking a rivet at the same time, characterized in that the device is provided with an elastic body that pushes up a workpiece and has a force greater than the force required to open the claw body and insert the rivet.