JPH0649403Y2 - Attachment device for tack head forming tool in caulking machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a mounting device for a tack head forming tool in a caulking machine.

[Conventional technology]

Conventionally, in order to attach a tack head forming tool to the crimping machine shown in Japanese Utility Model Laid-Open No. Sho 63-101136, the center of the lower end surface of the rotary lifting shaft is driven in one direction by the operation of the motor and is lifted and lowered by the fluid pressure acting on the cylinder The screw shaft at the center of the upper end surface of the tack head molding tool is screwed into the screw hole of.

[Problems to be solved by the device]

Since it is a screw-in method, it is tightened with a tool so as not to loosen after screwing in, and it is loosened with a tool at the time of replacement, so that there is a problem that it takes a lot of trouble.

In addition, since many tack head forming tools are equipped according to the diameter of the tack head and are housed in a case or the like, there is a problem that they cannot be attached if the screw threads are damaged during handling during replacement.

Therefore, an object of the present invention is to provide an attachment device for a rivet head forming tool in a caulking machine which can be replaced very easily and quickly.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention lowers a spindle supported by a first cylinder supported by a column or the like by a fluid pressure which penetrates the piston shaft and the axial center of the piston shaft. , In addition to pressing the molding shaft of the tack head molding tool that is replaceably attached to the lower end of this spindle to the tack shaft of the product, the spindle is driven by the motor and the tack head is molded on the tack shaft. A scroll chuck is fixed to the lower end of the spindle, the lower end of the rod penetrating the axis of the spindle is engaged with the claw retracting mechanism of the scroll chuck, and the second cylinder is installed on the upper end of the spindle. The upper end of the rod is connected and the second
Cylinder action Fluid pressure supply The rotary joint is restrained from rotating, and a flange that is held by a claw is provided at the end of the tack head molding tool.In addition, there is a recess for positioning the flange that fits into the tip surface of the scroll chuck. It is provided and configured.

[Action]

When the tack head forming tool is attached to the caulking machine, the rod is lowered by the fluid pressure applied to the second cylinder to slide each claw of the scroll chuck in the separating direction.

Then, after the flange of the tack head forming tool is fitted and positioned in the recessed portion of the scroll chuck, the rod is lifted by the fluid pressure acting on the second cylinder to slide the claws of the scroll chuck in the approaching direction, Since each claw engages with the flange, the rivet head forming tool is held by the chuck.

When removing the held tack head forming tool, slide the pawls in the separating direction while lowering the rod by the fluid pressure acting on the second cylinder, and release the engagement relationship between the pawls and the flange, that is, hold. do it.

〔Example〕

Hereinafter, an embodiment according to the present invention will be described with reference to the accompanying drawings.

In the figure, reference numeral 1 is a first cylinder supported by a column or the like (not shown) standing upright from a seat.

Further, a spindle 3 is provided through a through hole of a shaft center of a piston shaft 2 having a piston 1'which is moved up and down by a fluid pressure acting on the first cylinder 1 and which is rotatably supported so as to freely rotate at a fixed position. ing.

Further, a motor 5 is installed above the first cylinder 1 via a non-rotating support member 4 that moves up and down together with the piston shaft 2, and a pulley 7 from the output shaft 6 of the motor 5 to the spindle 3 and a pulley 7 are provided. Belt 8 to pass between
It is designed to be transmitted via.

As a means for preventing the support member 4 from rotating, in the illustrated case, a vertical guide rail 9 is provided on the first cylinder 1, and a projecting piece protruding from the support member 4 is provided on the guide rail 9.
10 is inserted.

At the lower end of the spindle 3, the scroll chuck 11
Is stuck.

Further, the rod 12 is passed through the axis of the spindle 3, and the lower end of the rod 12 is engaged with the retracting mechanism 14 of the claw 13 of the scroll chuck 11.

As shown in FIG. 3, the claw 13 is arranged in a trisection position around the rod 12, is plate-shaped, and the engaging claw portion is directed toward the center. It is bolted to.

In the illustrated case, the rod 12 and the retracting mechanism 14 are engaged with each other by inserting the lower end portion of the rod 12 into the end effecting tubular body 15 of the retracting mechanism 14 and screwing the lower end screw portion 16 of the rod 12 from below. Place the upper surface of the first ring 17 of the inner screw on the cylindrical body 15
The first ring 17 is contacted with the upper edge of the step portion 18 provided at the lower end of the inner periphery of the first ring 17, and the second ring 20 of the outer screw screwed from below into the inner peripheral threaded portion 19 of the step portion 18 raises the first ring 17 upward Although pressed, it may be engaged by a method other than the above.

A second cylinder 21 that moves up and down together with the spindle 3 is connected to the upper end of the rod 12.

Rotary joint for supplying working fluid pressure of the second cylinder 21
26 is attached to the upper end of the second cylinder 21 and restrains it from rotating. As a restraint means which does not rotate, it is provided on the rotary joint 26 and the support member 4 (not shown) like the motor 5.

22 is a tack head forming tool, and at the upper end of this tack head forming tool 22,
The scroll chuck 11 is fitted into the recessed portion 23 on the lower surface to perform centering and positioning of the tack head forming tool 22, and the claw 13
Is provided with a flange 24 that engages with.

Although the detailed structure of the rivet head forming tool 22 is omitted because it is publicly known, the lower end of the forming shaft 25 that tilts the shaft center and causes the orbital movement (precession) and the center of the forming surface of the spindle 3 are described. Aligned with the axis of.

With the above construction, when the tack head forming tool is mounted on the caulking machine, the rod 12 is lowered together with the piston 21 'by the fluid pressure acting on the second cylinder 21, and the retracting mechanism is moved.
Each claw 13 is slid in the separating direction by 14.

Next, the flange of the tack head forming tool 22 gripped in the recess 23
After fitting 24, the rod 12 is lifted by the fluid pressure acting on the second cylinder 21, and each hook 13 is slid in the approaching direction by the retracting mechanism 14, and each hook is attached to the flange 24.
Since the 13 is engaged, the tack head forming tool 22 is held.

When removing the held tack head forming tool, each claw 13 may be slid in the separating direction by the fluid pressure applied to the second cylinder 21.

〔effect〕

As described above, according to the attachment device of the tack head forming tool in the caulking machine according to the present invention, the scroll chuck is provided at the tip of the spindle, and the claw of the scroll chuck is applied to the second cylinder by the fluid pressure. Unlike the screw method, the tack head forming tool can be attached and detached very easily and quickly because it is slid through the rod that moves up and down.

In addition, when the tack head forming tool is attached, since it is clamped by the claws arranged radially, centering can be performed.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a caulking machine according to the present invention, and FIG. 2 is an enlarged vertical sectional front view showing a main part of the same. 1 ... 1st cylinder, 2 ... piston shaft, 3 ... spindle, 4 ... support member, 5 ... motor, 6 ... output shaft, 7 ... pulley, 8 ... belt, 9 ... guide rail , 10 …… Projection piece, 11 …… Scroll chuck, 12 …… Rod, 13 …… Claw, 14 …… Withdrawal mechanism, 21 …… 2nd cylinder, 22 …… Tack head forming tool, 23 …… Recessed part, 24 …… Flange, 26 …… Rotary joint.

Claims (1)

[Scope of utility model registration request] 1. A spindle (3) which is supported by a fluid pressure acting on a first cylinder (1) supported on a column or the like, together with the piston shaft (2) so as to penetrate the axial center of the piston shaft (2). ) Is lowered, the molding shaft (25) of the tack head molding tool (22) which is attached to the lower end of the spindle (3) is pressed against the tack shaft of the product, and the spindle (25) is moved by the motor (5). 3) In a caulking machine for driving a tack head to drive a tack shaft, a scroll chuck (11) is fixed to the lower end of the spindle (3), and is passed through the spindle (3) shaft core. The lower end of the rod (12) is engaged with the claw retracting mechanism (14) radially arranged on the scroll chuck (11), and the second cylinder (2) installed on the upper end of the spindle (3). ) Above With connecting the upper end of the head (12), and constrained not to rotate the working fluid pressure supply rotary joint (26) of said second cylinder (21), also,
A flange (24) held by a claw (13) is provided at the end of the tack head forming tool (22), and further, a positioning recessed portion of the flange (24) fitted into the tip end surface of the scroll chuck (11). (23) is provided, which is a device for mounting a tack head forming tool in a crimping machine.