JPH0244913Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a riveting machine for rivet heads.

[Conventional technology]

In the conventional caulking machine, as shown in FIGS. 4 and 5, a cylinder 2 is supported by a column 1, a motor 4 is installed on the upper end of a piston shaft 3 of the cylinder 2, and the axial center of the piston shaft 3 is The output shaft 6 of the motor 4 is engaged with the upper end of a spindle 5 which is supported through the shaft, and a rivet head forming tool 7 is attached to the lower end of the spindle 5, and a pressure source is applied to the cylinder 2. When the piston shaft 3 is lowered, the molding shaft 7' of the rivet head forming tool 7 is pressed against the rivet shaft of the item fed onto the table 8, and the rivet head is molded by the rotation and rocking of the molding shaft 7'. be done.

[Problem that the invention attempts to solve]

If the cylinder supported by the column is used exclusively for oil, even if air is applied, the pressure-receiving area of the piston will be small, and it will not be possible to obtain the strong pressing force needed to mold the rivet head.

In addition, in the case of air-only use, when oil is applied, the pressure-receiving area is large, resulting in a strong pressing force, which causes problems such as bending of the riveted shaft and other causes of failure.

Furthermore, since the air and oil cylinders cannot be replaced, there is a problem in that air and oil caulking machines must be manufactured separately.

[Means for solving problems]

In order to solve the above problems, this idea consists of a vertical cylinder supported by a column located directly above the table, a tube shaft inserted into the cylinder so that it can be raised and lowered, and a tube shaft inserted into the tube shaft. A spindle is inserted through the shaft and supported to rotate freely in a fixed position, a rivet head forming tool is provided at the lower end of the spindle that protrudes from the tube shaft, and a piston shaft is connected to the upper end of the tube shaft, and a piston shaft is connected to the upper end of the cylinder. An oil or air cylinder that is installed removably, an arm that is connected to the top of the tube shaft and passes through the cylinder so that it can be raised and lowered, a motor that is installed on this arm, and the output shaft of this motor that transmits rotation to the spindle. It consists of a transmission mechanism.

[Effect]

Place the item on the table, position the rivet shaft directly below the rivet head forming tool, and then extend the cylinder to lower the spindle together with the tube shaft.
The shaping shaft of a rivet head forming tool is pressed against the head end of the rivet shaft, and the shaping shaft is pivoted and oscillated by a spindle driven by a motor via a transmission mechanism, so that the rivet head is formed.

〔Example〕

In the figure, 11 is a vertical cylinder supported by a column 12.

The method of supporting the cylinder 11 is to fit the cylinder 14 with the flange 13 on the outer side of the lower part of the cylinder 11, and then fix them together using set bolts or other methods. A cylindrical body 14 is fitted, and a flange 13 is fixed to the lower surface of the column 12 with bolts or the like.

Reference numeral 16 denotes a tube shaft inserted into the cylinder 11 so as to be able to rise and fall freely, and a spindle 17 is inserted through the tube shaft 16, which is supported so as to rotate freely in a fixed position.

Further, a rivet head forming tool 18 is provided at the lower end of the spindle 17 protruding from the lower end of the tube shaft 16.

The above-mentioned rivet head forming tool 18 is well known and its detailed configuration is omitted from the drawings, but the center of the lower end forming surface of the forming shaft 18', which is supported so as to rotate freely with its axis tilted, and the spindle 17. The shaft centers are aligned, and as a result, the molded shaft 18' swings and swings.

Furthermore, an oil or air cylinder 19 is removably installed at the upper end of the cylindrical body 11 so that it can be replaced, and the upper end of the tube shaft 16 is fitted into the piston shaft 20 of the cylinder 19 by fitting the square hole into the square shaft. or otherwise connected.

The above-mentioned cylinder 19 is for air in the illustrated case, but if the source of action is oil, a hydraulic cylinder is attached.

Note that the downward stroke of the tube shaft 16 can be adjusted by a stroke adjustment device 21.

The above-mentioned stroke adjustment device 21 includes an operating rotary tube 22 whose lower edge is rotatably attached to the upper end of a cylinder 1 in the illustrated case, a threaded portion 23 provided on the inner periphery of this operating rotary tube 22, and a tube shaft. 16, a spacer 25 interposed between the tube shaft 16 and the cylinder 19, a longitudinal long hole 26 provided in the spacer 25, and a spacer 24 connected from the outer periphery of the annular plate 24. It consists of a protruding piece 27 that penetrates into the elongated hole 26, a threaded part 28 provided on the distal end surface of this protruding piece 27 so as to be screwed into the threaded part 23, and a protruding part 29 provided at the upper end of the tube shaft 16, A protrusion 2 is formed on the upper surface of the annular plate 24.
9 to collide with each other to regulate the downward stroke of the tube shaft 16, and the annular plate 24 is raised and lowered by the rotation of the operation rotary cylinder 22 to adjust the downward stroke of the tube shaft 16.

Reference numeral 30 denotes a vertically elongated window provided on the upper peripheral wall of the cylinder 11. The window 30 is connected to the upper outer circumferential surface of the tube shaft 16, and when raised and lowered together with the tube shaft 16, the window 30 is connected to the upper and lower edges of the window 30. The above-mentioned through-hole 3 to avoid collision
An arm 31 is provided that passes through the hole.

Reference numeral 32 denotes a motor installed on the upper surface of the arm 31 protruding outside the cylindrical body 11, and rotation is transmitted from this motor 32 to the upper end of the spindle 17 via a transmission mechanism 33.

The above transmission mechanism 33 is a motor 3 in the illustrated case.
The pulley 34 provided on the output shaft of 2 and the spindle 1
The pulley 35 provided at the upper end of 7 and this shaft pulley 3
4 and 35.

In the figure, 37 is a hole provided in the peripheral wall of the tube shaft 16 so that the belt 36 passes through it, and 38 is a support device for the cylindrical body 11.

〔effect〕

As described above, according to the caulking machine according to this invention, a cylinder is installed at the upper end of the cylindrical body, the piston shaft of this cylinder is connected to the upper end of the tube shaft, and the spindle is inserted through the tube shaft and is supported. Since the drive is provided via a transmission mechanism from a motor installed on an arm that is connected to the tube shaft and protrudes outside the tube body and that moves up and down together with the tube shaft, it is possible to use only air as the source of action at the location where the caulking machine is installed. Even when only oil is available, an air cylinder or hydraulic cylinder can be easily installed and operated.

Therefore, there is no need to separately manufacture a caulking machine for the hydraulic cylinder and a caulking machine for the air cylinder.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of the caulking machine according to this invention, Fig. 2 is a plan view of the same, Fig. 3 is an enlarged partially cutaway front view showing the main parts of the above, and Fig. 4 is a conventional caulking machine. FIG. 5 is an enlarged vertical side view showing the main parts. 11... Cylindrical body, 12... Column, 16... Tube shaft, 17... Spindle, 18... Rivet head forming tool, 18'... Forming shaft, 19... Cylinder, 20
... Piston shaft, 30 ... Through window, 31 ... Arm, 32 ... Motor, 33 ... Transmission mechanism.

Claims (1)

[Scope of utility model registration request] A vertical cylinder supported by a column so as to be located directly above the table, a tube shaft inserted into the cylinder so that it can be raised and lowered, and a spindle inserted into the tube shaft and supported so that it can rotate freely in a fixed position. a rivet head forming tool provided at the lower end of the spindle protruding from the tube shaft; an oil or air cylinder that connects the piston shaft to the upper end of the tube shaft and is removably installed on the upper end of the cylinder; A caulking machine consists of an arm connected from the top and penetrating the cylindrical body so that it can be raised and lowered, a motor installed on this arm, and a transmission mechanism that transmits rotation from the motor's output shaft to the spindle.