JPS6239870Y2 - - Google Patents

Description

[Detailed description of the invention] This invention arranges rivets in a row at predetermined intervals on a member, approaches and moves away from each rivet with a rivet head forming tool, and moves the member or tool along the row of rivets. The present invention relates to a device for automatically positioning a tool at a rivet position when moving the tool in a direction to swage each rivet in turn.

When caulking multiple studs arranged in a row,
If the pitches of the rivets are evenly spaced, caulking can be performed using a multi-axis rivet head forming tool or by intermittent feeding at equal intervals.

However, if there is an error in the pitch between the rivets, or if the rivets are spaced unevenly, caulking cannot be achieved using the multi-axis rivet head forming tool or the intermittent feed at equal intervals.

For this reason, in the past, the axes of the tack and the tack head forming tool were aligned by visual inspection, which had drawbacks such as poor operating efficiency.

The purpose of this invention is to ensure that the rivet head forming tool is positioned at the rivet crimping position even if there is an error in the pitch of the rivet or the pitch is uneven, and to prevent the tool from moving beyond that position. An object of the present invention is to provide a positioning device that stops the entire function.

That is, in the above device, this invention
The rivet head forming tool is provided with a detection rod that moves on a line intersecting the direction of the row of rivets, and the detection rod is made capable of advancing and retreating into the moving area of each rivet when the member moves in the direction of the row of rivets relative to the tool. It is rotatable in the row direction from a regular predetermined position, and a switch is constructed by the contact and separation of the detection rod and each stud, and a switch signal is transmitted when the detection rod touches the stud at the predetermined position. The tool is provided with a switch which serves as a signal to stop at the rivet position and is activated by rotation of the detection rod when the tool moves beyond the rivet crimping position, and the operation of this switch causes the entire function of the device to stop. This is what I did.

An embodiment of this invention will be described below with reference to the accompanying drawings.

As shown in the figure, rivets A are fitted into member B in a row at the required intervals, and a rivet head forming tool C is positioned above member B, and this tool C is movable in the direction of the row of rivets A. It is becoming. The tool C is fixed to the tip of a shaft 2 provided on the piston of the cylinder 1, and is rotated by rotating the shaft 2 with a motor.

A cylinder 4 for moving a spindle 5 on a line intersecting the row direction of the rivets A is provided in the cylinder 1 via a bracket 8, and a detection rod 6 is coaxially attached to the tip of the spindle 5 via an insulating material.
The amount of protrusion and retraction of the spindle 5 of the cylinder 4 is determined by the detection rod 6 when the member B moves relative to the tool C in the direction of the row of studs A.
is set so that it can move forward and backward into the movement area of rivet A, and when the spindle 5 is protruding, the tool C
If it moves, the detection rod 6 will definitely come into contact with the stud A.

The cylinder 4 is rotatable in the direction of the row of studs A by means of a pin 3, and is provided with a protruding rod 8 on its side. It is positioned at a predetermined position by the protruding rod 8 coming into contact with the stopper 10 on the side. Further, the cylinder 1 is provided with a switch 7 whose actuator faces the protruding rod 8, and when this switch 7 acts, the entire function of the apparatus is stopped.

When the detection rod 6 comes into contact with each stud A, a conductive circuit is established and the movement of the cylinder 1 is stopped. In other words, the detection rod 6 and the studs A act as a switch, and the signal is A stop signal for cylinder 1 is issued and cylinder 1 moves to stud A.
It is designed to stop at the caulking position, and the point of contact is set in consideration of the distance (time) that the cylinder 1 travels by inertia to the caulking position after the stop signal is issued. In addition, when the cylinder 1 moves due to its inertia, a rotational force acts on the detection rod 6, and the rotational force is transmitted to the cylinder 4 through the pin 3.
It is absorbed by rotating against. When the cylinder 4 rotates, the cylinder 1 stops, and the tool C is located at the crimping position of the stud A, the protruding rod 8 does not come into contact with the actuator of the switch 7, but when it rotates further, it comes into contact with the switch 7. 7 is now activated.

Next, to explain the operation, when the tool C moves in the row direction of the studs A with the cylinder 4 operating and the detection rod 6 protruding into the movement area of the studs A, first, as shown in FIG. The detection rod 6 comes into contact with the rivet A, and the tool C stops at the rivet position of the rivet A. When the tool C is stopped, the tool C is lowered by the cylinder 1, and the forming shaft C' is brought into pressure contact with the stud A and rotated to perform the caulking work. During or after the caulking work is completed, the detection rod 6 is moved out of the movement area of the stud A by the cylinder 4, and after the work is completed, the tool C is also moved away by the cylinder 1 and moved in the row direction toward the next stud A. During the movement, when it passes a caulked stud A, the detection rod 6 is projected by the cylinder 4 and is ready to detect the next stud A. Thereafter, the above-described operations are repeated to sequentially caulk the studs A arranged in a row.

In the above action, even though the detection rod 6 detects the stud A, the movement stop circuit of the tool C does not work and if the tool C continues to move, the cylinder 1 rotates further from the caulking position and the protruding rod 8 actuates switch 7 to stop the entire function of the device. That is, damage to the device is prevented. In addition, in the embodiment described above, a solenoid may be used instead of the cylinder 4.

As described above, according to the rivet crimping and positioning device of this invention, the rivets A are arranged in a row on the member B at predetermined intervals, and the rivet head forming tool is used for each of the rivets A.
In this device, the member B or tool C is moved in the row direction of the studs A to caulk each stud A in turn, in which the tool C is moved on a line intersecting the row direction of the studs A. A detection rod 6 is provided, and when the member C moves relative to the tool B in the row direction of the studs A, the detection rod 6 can move forward and backward into the movement area of each stud A, and can be rotated from a normal predetermined position in the row direction. A switch is configured by the contact and separation of the detection rod 6 and each stud A, and a switch signal is sent when the detection rod 6 touches the stud A at the predetermined position to move the tool C to the crimping position of the stud A. Since the signal is used as a stop signal, the studs A arranged at intervals in the row direction can be automatically and reliably caulked in sequence regardless of the spacing between them.

In addition, tool C is provided with a switch that is activated by the rotation of the detection rod 6 when tool C moves beyond the crimped position of rivet A, and the operation of this switch stops the function of the entire device. A
Even if the tool continues to move despite being detected, this erroneous movement can be detected and damage to the equipment can be prevented. In its detection action, the detection rod 6 is rotatable in the row direction relative to the cylinder 1, so even in the event of a malfunction, no excessive force is applied to the detection rod 6, and the detection rod 6 is not damaged. .

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of the device according to this invention, and FIG. 2 is a perspective view showing the main parts of the same. A... rivet, B... member, C... rivet head forming tool,
1...Cylinder, 2...Axis, 6...Detection rod.

Claims (1)

[Scope of utility model registration request] Arrange studs A in rows at predetermined intervals on member B,
In the apparatus, a rivet head forming tool C approaches and moves away from each rivet A, and the member B or tool C is moved in the row direction of the rivets to caulk each rivet A in turn. A detection rod 6 is provided that moves on a line intersecting the row direction of the studs A, and this detection rod 6 can be moved forward and backward into the moving area of each stud A when the member B moves relative to the tool C in the row direction of the studs A. At the same time, it is rotatable in the row direction from a normal predetermined position, and a switch is constructed by the contact and separation of the detection rod 6 and each stud A, so that when the detection rod 6 contacts the stud A at the predetermined position, The switch signal is a signal that stops the tool C at the crimping position of the rivet A, and the tool C
The tool C is provided with a switch that is activated by the rotation of the detection rod 6 when the rivet moves beyond the crimping position of the rivet A, and the operation of this switch stops the function of the entire device. Caulking positioning device.