JP2915752B2 - Caulking machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caulking machine for caulking rivets or the like to a base material, and more particularly to a caulking machine capable of caulking a base material having a plurality of steps with one device.

[0002]

2. Description of the Related Art FIG. 2 is a front view showing the entire structure of a conventional caulking machine, and FIG. 3 is a partial sectional view of a main part thereof.

In FIG. 2, reference numeral 1 denotes a pedestal, on which a table on which a base material on which rivets and the like are to be set is set. Reference numeral 2 denotes a support, and the support 2 is provided with a driving portion of the caulking machine described later. Reference numeral 3 denotes a main body, and the main body 3 is provided with a mechanism required for caulking.

[0004] Reference numeral 4 denotes a head provided with a snap 4a at a front end thereof at a predetermined angle with respect to the axis, and as shown in FIG. It is supported by. The shaft 11 moves downward by the action of compressed air, and is driven to rotate by the action of the drive motor 7. 5 is a stopper. Reference numeral 6 denotes a scale window, so that the rotation angle of the stopper 5 can be visually recognized. As shown in the figure, the stroke of the head 4 is such that the shaft 11
Is set by the distance until it comes into contact with the stopper surface 5a.
On the inner peripheral surface of the stopper 5, a screw portion 5b meshing with a screw portion 10a formed on the holding member 10 of the driving portion is provided.
The stopper 5 is rotated up and down to move up and down, and the stroke of the head 4 can be adjusted. After adjusting the stroke, the locking screw 12 is tightened and fixed.

[0005] Reference numeral 9 denotes a regulator to which an air hose for compressed air is connected, which selects the pressure of the air to be used.

[0008] Reference numeral 8 denotes an operation panel.
The caulking time is adjusted and driven.

Next, a description will be given of a caulking operation of caulking a rivet to a base material in the caulking machine.

When caulking a rivet to the base material set on the table, a foot switch (not shown) is turned on, and the rivet is rotated by the operation of the drive motor 7 while rotating.
At the same time, the head 4 is lowered by the action of the compressed air. When the rivet comes into contact with the rivet, the snap 4a is mounted eccentrically, so that the rivet is pressed against the substrate while the head of the rivet is expanded, and the rivet is caulked to the substrate.

[0009]

However, in the above-described caulking machine, since the stroke of the head 4 can be adjusted by manually rotating the stopper 5, a substrate having a plurality of strokes is required. Although it is possible to use it for caulking, if it is going to cope with a plurality of strokes, it is necessary to manually adjust the stroke each time the rivet of each stroke is caulked, and caulking to one base material ends It takes a considerable amount of time and effort to complete the process.Therefore, it is common practice to prepare a plurality of caulking machines corresponding to each stroke and not to adjust the stroke, and after the adjustment mechanism has been adjusted once, It was generally not used.

[0010] For this reason, there has been a problem that the equipment cost becomes expensive and the installation place becomes large.

The present invention has been made in view of such a problem, and by adding a simple mechanism, the stroke can be automatically adjusted, thereby shortening the adjustment time required for the stroke. It is another object of the present invention to provide a caulking machine which can cope with caulking of a substrate having a plurality of strokes.

[0012]

To achieve the above object, the present invention has the following features.

[0013] In the first aspect , the snap is provided at the tip end.
A head provided at a predetermined angle with respect to the axis,
Driving means for driving the head in the vertical direction;
Second drive means for rotationally driving, and the stroke of the head
Stopper part to be adjusted and formed on the outer periphery of this stopper part
And a tooth portion that rotates integrally with the stopper portion,
By rotating with meshing with the stopper
And a gear that rotates integrally with the gear.
The rotation angle of the gear and the gear
And a stepping motor for driving the roller.

According to a second aspect of the present invention, a storage means for storing the stroke of the stopper and a control means for controlling the rotation angle of the stepping motor according to the stored stroke are provided.

[0015]

The above means operates as follows.

Since the stopper portion is rotated directly by a stepping motor instead of manually, no trouble is required for adjustment, and the rotation angle of the stepping motor can be accurately set by counting the number of steps. As long as the correct rotation angle of the stopper part is obtained and the stepping motor does not rotate after adjustment,
Since the position of the stopper is kept constant, there is no need to fix the stopper with a fixing screw.

Further, by detecting the rotation angle of the gear portion, more accurate positioning can be performed.

Furthermore, by storing the necessary strokes in the storage means and controlling the rotation angle of the stepping motor based on this storage, it is possible to easily cope with a plurality of strokes.

[0019]

Embodiments of the present invention will be described below.

FIG. 1 is a partial sectional view showing a main part of a caulking machine according to the present invention. The same parts as those in the above-described conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown, on the outer periphery of the stopper 5,
A spur gear 13 that rotates integrally with the stopper 5 is fixed. Spur gears 14 are arranged side by side so as to always mesh with the teeth 13 a formed on the spur gears 13, and are driven to rotate by a stepping motor 15. A timing cam 16 that rotates integrally with the spur gear 14 is provided above the spur gear 14, and the rotation angle of the timing cam 16 is detected by a sensor 17. The control unit 18 includes a storage unit 18a in which a necessary stroke is set, and a control unit 1 that controls the number of driving steps of the stepping motor 15 according to the stroke stored in the storage unit 18a.
8b.

Next, the stroke adjustment and the caulking operation will be described. If there is a step in the base material to be caulked and it is necessary to set a plurality of strokes, the storage means 18a stores the strokes. The number of driving steps of the stepping motor 15 is controlled by the control means 18b based on the stored data, and the stepping motor 15 is rotated. Thus, the stepping motor 15 rotates by a predetermined angle. Accordingly, the spur gear 14 also rotates by a predetermined angle, and the stopper 5 also rotates by a predetermined amount via the spur gear 13 to set a stroke. At this time, by detecting an accurate rotation angle by the sensor 17, fine adjustment can be performed and rotation can be performed at an accurate angle.

After the stroke is adjusted, the base switch is caulked by turning on a foot switch (not shown) as described in the conventional example. When the caulking with the set stroke is completed, the stepping motor 15 is rotated again based on the stroke stored in the storage unit 18a, and the stopper 5 is adjusted to a new stroke.
Further, a caulking operation is performed.

By repeating this operation, caulking can be performed with the stored stroke.

[0025]

As described above, in the caulking machine according to the present invention, no labor for adjustment is required, and the rotation angle of the stepping motor can be accurately set by counting the number of steps. Therefore, an accurate rotation angle of the stopper portion can be obtained, and the position of the stopper portion is maintained as long as the stepping motor does not rotate after the adjustment, so that it is not necessary to fix the stopper portion with the fixing screw.

Further, by detecting the rotation angle of the gear portion, more accurate positioning can be performed.

Furthermore, by storing the necessary strokes in the storage means and controlling the rotation angle of the stepping motor based on this storage, a plurality of strokes can be easily handled. It is possible to cope with caulking of a work having the above, and not only the equipment is inexpensive, but also there is a remarkable effect that a large installation space is not required.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing a main part of a caulking machine according to the present invention.

FIG. 2 is a front view showing the entire configuration of a conventional caulking machine.

FIG. 3 is a partial sectional view showing a main part of a conventional caulking machine.

[Explanation of symbols]

 Reference Signs List 1 pedestal 2 support 3 main body 4 head 5 stopper 6 scale 7 motor 8 operation panel 9 regulator 10 holding member 11 shaft 12 locking screw 13 spur gear 14 spur gear 15 stepping motor 16 timing cam 17 sensor 18 control unit

Claims (2)

(57) [Claims] A head provided with a snap at a tip thereof at a predetermined angle with respect to an axis; a driving means for driving the head in a vertical direction; a second driving means for rotating and driving the head; A stopper portion for adjusting the stroke of the head, a tooth portion formed on an outer peripheral portion of the stopper portion and rotating integrally with the stopper portion, and the stopper portion interlocking with the tooth portion and rotating through the tooth portion to rotate. a gear for rotating a rotation of the gear to rotate integrally with the gear
A caulking machine comprising a detecting member for detecting an angle and a stepping motor for directly rotating this gear. 2. A memory for storing a stroke of the stopper.
Memory and stepper according to this memorized stroke
Control means for controlling the rotation angle of the motor
The caulking machine according to claim 1, wherein: