JPH0248112Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a crimping device for crimping studs arranged on the circumference.

[Conventional technology]

In order to support the rollers on a retainer consisting of two annular plates, the required number of rollers are arranged between the annular plates, and the riveted shaft is inserted from the through hole in one annular plate into the through hole provided in the axis of the roller. At the same time, pass the tip of the rivet shaft through the hole in the remaining annular plate.

Next, after placing the end rivet head of the rivet shaft on the anvil, the tip of the rivet shaft is caulked using a rivet head forming tool to form a rivet head.

Thereafter, the next rivet head is placed on the anvil by hand, and the next rivet head is repeatedly placed on the anvil to form a rivet head at the tip of each rivet shaft.

[Problem that the invention attempts to solve]

Since the rivet shafts to be crimped are sequentially moved to the anvil by hand while turning the retainer, there is a problem that it is time consuming and that efficiency is significantly reduced.

[Means for solving problems]

In order to solve the above problems, this invention has a rotating shaft that is driven by a motor and is provided to move up and down with a cylinder, and the center of the molded surface at the lower end is aligned with the axis of the rotating shaft. In a riveting machine consisting of a rivet head forming tool attached to the lower end of the rotating shaft so as to move, a table that can be adjusted forward and backward is placed below the rivet head forming tool. A rotating plate is provided, and an anvil is provided on the rotating plate to support the rivet head of the rivet shaft that passes through the roller of the bearing and the retainer, and furthermore, it is detected that the rivet shaft is located directly below the rivet head forming tool. A detection device is provided to stop the operation of the rotating body when the rotation body stops, and a stopping device is provided to stop the rotating body by positioning the rivet shaft directly under the rivet head forming tool upon detection by the detection device. It is constructed by providing a holding device that moves forward and then descends to pressurize the holder downward.

[Effect]

First, the rivet head of the rivet shaft is placed on each anvil, and the roller and the bearing incorporating the retainer are placed on the rotating body.

Next, when the rotating body is driven at low speed, the detection device detects that the center of the tack head forming tool directly below the rivet head forming tool, that is, the axis of the tack shaft and the center of the forming surface of the rivet head forming tool are aligned, and the drive of the rotating body is stopped. At the same time, the rotating body is stopped by a stopping device.

Thereafter, the rivet shafts on both sides of the caulking position are pressurized downward by a presser device that moves forward and then descends.

As the rotating tack head forming tool descends, the tack head is formed at the tip of the tack shaft.

After forming the rivet head, the rivet head forming tool rises, the presser device moves back after being raised, and furthermore, the stop of the rotating body by the stop device is released.

After that, the rotating body rotates.

〔Example〕

In the figure, A is a riveting machine.

As shown in FIG. 1, the above-mentioned riveting machine A has a rotating shaft 3 that is driven by a motor 1 and moves up and down by the action of a cylinder 2, and an axis between the center of the molding surface at the lower end and the axis of the rotating shaft 3. and a rivet head forming tool 4 attached to the lower end of the rotating shaft 3 so as to rotate and swing in unison.

The rivet head forming tool 4 described above is not shown because it is publicly known, but it includes a base fixed to the lower end of the rotating shaft, and a recessed hole provided diagonally upward and outward from the lower end of the base. It consists of a molded shaft whose upper end is fitted into a recessed hole via a bearing so that the center of the molded surface of the lower end coincides with the axis of the rotating shaft 3.

Furthermore, a table 5 that can move forward and backward is provided below the rivet head forming tool 4.

As shown in FIGS. 3 and 4, the table 5 slides on top of the top plate 7 of the box 6 using rails 8 as guides, and a screw shaft is attached to the protrusion 9 on the top plate 7. The end of table 5 is supported on a shaft so that it can freely rotate in a fixed position.
The screw shaft 10 is screwed into the screw hole 11, and the table 5 is moved forward and backward by rotating the screw shaft 10.

Furthermore, a rotating body 12 that rotates at a low speed is provided on the table 5.

The method for driving the rotary body 12 is as follows: The spindle 13 of the rotor 12 is supported on the table 5 as shown in FIG. Gears 16 are meshed.

Note that the top plate 7 is provided with long holes 1 for passing the motor 14 and the support shaft 13 so as not to obstruct the movement of the table 5.
7 is provided.

Furthermore, an anvil 21 is provided on the upper surface of the rotating body 12 to support the end rivet head of each rivet shaft 20 that passes through the roller 18 of the bearing and the retainers 19, 19.

Reference numeral 22 denotes a detection device that detects that the rivet shaft 20 is located directly below the rivet head forming tool 4 and stops the operation of the motor 14.

The above-mentioned detection device 22 includes a rod 24 that moves forward and backward by a first cylinder 23, as shown in FIG.
Two parallel groove-shaped guide rails 25 whose ends are supported at the tip of the rod 24, a slider 26 whose side edges are fitted into the guide rails 25 and supported so as to be movable forward and backward, and a tip plate 27 of the rod 24.
a second cylinder 28 which is supported by the slider 26 and has a piston shaft attached to the end of the slider 26; an elevating body 30 which is raised and lowered by the action of a third cylinder 29 which is supported at the tip of the slider 26; After the rod 24 is advanced greatly by the first cylinder 23, the slider 26 is further advanced slightly by the second cylinder 28, and then the elevating body 3 is moved forward by the third cylinder 29.
Detection pin 3 is attached to the tip of the riveted shaft 20 while lowering the
1 to detect the riveted shaft 20,
Upon detection, a switch (not shown) is activated to stop the operation of the motor 14.

After detection, the elevating body 30 is raised by the action of the third cylinder 29, and then the slider 2 is raised by the action of the second cylinder 28 and the third cylinder 29.
6 and rod 24 are moved back.

Reference numeral 33 denotes a stopping device that positions the riveting shaft 20 directly below the riveting head forming tool 4 and stopping the rotating body 12 upon detection by the detecting device 22.

As shown in FIGS. 6 and 7, the above-mentioned stopping device 33 includes a brake plate 34 located at a position facing the outer periphery of the rotating body 12.
The protruding piece 35 protruding from the lower surface of the brake plate 34 is rotatably supported via a pin 36, and the end of the brake plate 34 is pushed up via the protruding shaft 38 that rises due to the expansion action of the cylinder 37. and rotating body 1
The distal end edge of the brake plate 34 is brought into pressure contact with the outer periphery of the brake plate 2.

40 is a holding device that presses the upper retainer 19 downward.

As shown in FIGS. 4 and 8, the presser device 40 advances the two left and right sliders 42 by extending the cylinder 41, and then moves the guide member 43 of the slider 42 together with the slider 42 by the cylinder 44. Pull down the slider 42
The pin 45 on the lower surface of the tip is pressed against the upper surface of the retainer 19.

The pressing position by the pin 45 is such that both sides sandwiching the caulking position are simultaneously pressed.

Note that when the cylinder 44 is released from being pulled down, the spring 46 causes the guide member 43 to return to the upward position.

〔effect〕

As described above, according to the caulking device of this invention, the rivet head of the rivet shaft is placed on each anvil, and the bearing incorporating the retainer is placed on the rotating body together with the roller. During rotation, when the detection device detects that the rivet shaft is located directly below the rivet head forming tool, the drive of the rotating body is immediately stopped, the stopping device stops the rotating body, and then the holding device stops the retainer. In order to form a rivet head at the tip of each rivet shaft by repeatedly pressurizing both sides of the crimping position downward and then lowering the rivet head forming tool to form the rivet head on the tip of the rivet shaft,
This eliminates the need for the labor-intensive work of manually positioning the rivet shaft under the rivet head forming tool.

Furthermore, since the retainer is pressurized downward by the holding device, the retainer does not lift up.

Furthermore, since the rotating body is stopped by the stopping device, it is possible to accurately stop the rivet shaft detected directly below the rivet head forming tool so that there is no displacement.

[Brief explanation of the drawing]

Fig. 1 is a right side view of the caulking device according to this invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged vertical side view showing the main parts of the same, Fig. 4 is an enlarged plan view of the presser device, and Fig. 4 is an enlarged plan view of the pressing device. 5 is an enlarged side view of the detection device, FIG. 6 is an enlarged plan view of the stop device, FIG. 7 is a partially cutaway side view of the same, and FIG. 8 is an enlarged side view of the presser device. A... Riveting machine, 1... Motor, 2... Cylinder, 3... Rotating shaft, 4... Rivet head forming tool, 5... Table, 6... Box, 7
...Top plate, 8...Rail, 9...Protrusion, 10...
Screw shaft, 11...Screw hole, 12...Rotating body, 13
...Spindle, 14...Motor, 15...Gear, 1
6...Gear, 17...Elongated hole, 18...Roller, 1
9... Retainer, 20... Rivet shaft, 21... Anvil, 22... Detection device, 23... First cylinder,
24...rod, 25...guide rail, 26...
... Slider, 27 ... Plate, 28 ... Second cylinder, 29 ... Third cylinder, 30 ... Lifting body, 31 ... Detection pin, 33 ... Stopping device, 34
...Brake plate, 35...Protrusion piece, 36...Pin, 37
... Cylinder, 38 ... Protruding shaft, 40 ... Holding device, 41 ... Cylinder, 42 ... Slider, 43
...Guide member, 44...Cylinder.

Claims (1)

[Scope of utility model registration request] A rotating shaft driven by a motor and provided to be raised and lowered by a cylinder, and a rivet attached to the lower end of the rotating shaft so that the center of the molded surface at the lower end and the axis of the rotating shaft coincide with each other and swing and swing. In a riveting machine consisting of a riveting head forming tool, a table that can be moved forward and backward is placed below the riveting head forming tool, a rotating plate is provided on this table, and a bearing roller is mounted on the rotating plate. and a detection device for detecting that the rivet shaft is located directly below the rivet head forming tool and stopping the operation of the rotating body; Upon detection by the detection device, a stopping device is installed to position the rivet shaft directly below the rivet head forming tool and stop the rotating body.
Furthermore, the caulking device is characterized in that it is provided with a presser device that moves forward when the rotating body stops rotating, and then descends to pressurize the retainer downward.