JPH0327750Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an apparatus for drilling a hole in a workpiece and welding a nut onto the hole.

<Conventional technology> When drilling a hole in a panel-shaped workpiece and welding a nut onto the hole, conventionally, as shown in Fig. 4, a drilling device that is moved up and down by a punch die 1 and a hydraulic cylinder 2 is used. Then, as shown in FIG. 5, the worker turns the work over and sets it on the notch 4, and the nut feeder 7 feeds the nut 8 onto the hole in the work W. A welding device was used to weld the nut 8 to the workpiece using a tip 5 using a stud gun 6.

<Problems to be solved by the invention> In the above-mentioned conventional method, drilling and welding of nuts are each performed in separate steps using two devices. Therefore, each device requires a worker, and it is necessary to invert the workpiece from the drilling process to the welding process, which is inefficient. Furthermore, drilling a large number of holes and welding nuts requires corresponding hydraulic cylinders and stud guns to be installed in parallel, resulting in high equipment costs.

<Means for solving the problems> The present invention solves the above-mentioned conventional problems, and its configuration consists of a hole-drilling unit equipped with a workpiece clamper on the main base and a nut-welding unit that are connected at a certain level. A work reversing device was installed at intervals between the hole drilling unit and the nut welding unit to invert and transfer the work, and the nut welding unit was equipped with a nut feeder that fed the nut onto the hole of the work. It is something.

<Operation> The present invention automatically performs a series of operations such as drilling a hole in a workpiece, reversing the drilled workpiece, carrying it into a nut welding device, and welding a nut.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3. In FIGS. 1 and 2, 1 is a main base installed on the floor. On this main base 1, a drilling unit 11 and a nut welding unit 12 are arranged at regular intervals,
This hole drilling unit and nut welding unit 1
A work reversing device 13 is provided between the two.

The specific configurations of the hole drilling unit 11 and nut welding unit 12 are as follows. First, the configuration of the drilling unit 11 will be described. A guide shaft 15 in the X-axis direction is provided on the main base 10, and a slide base 14 is slidably guided by the guide shaft 15. 16 is a motor equipped with an encoder for feeding and positioning the slide base 14.

A main frame 17 is installed on the slide base 14 via wheels 18 so as to be movable forward and backward in the Y-axis direction perpendicular to the axis (X-direction) of the guide shaft 15 . 19 is a cylinder for moving the main frame 17 forward and backward.

A punching frame 20 is attached to the main frame 17 so as to be floating in the vertical direction by a spring 21, and a punch die 22 and a punch 23 that is moved up and down by a hydraulic cylinder 24 are provided on the punching frame 20. Furthermore, it is provided with an upper receiving piece 25, a lower receiving piece 28 for the workpiece W, and a clamp claw 26 operated by a cylinder 27 to clamp the workpiece W on the upper receiving piece 25. A cam follower 44 is provided at the front end of the main frame 17, and is in contact with a copying plate 43, which will be described later.

The structure of the nut welding unit 12 will be described. A guide shaft 30 extending in the X-axis direction parallel to the guide shaft 15 on the drilling unit 11 side is provided on the main base 10, and a slide base 29 is slidably guided on this guide shaft 30. 31 is a motor equipped with an encoder for feeding and positioning the slide base 29.

The main lower frame 3 is mounted on the slide base 29.
2 is installed so as to be movable forward and backward in the Y-axis direction perpendicular to the axis of the guide shaft 30 via wheels 33. 34 is a cylinder for moving the main lower frame 32 forward and backward. 45 is a cam follower provided at the front end of the main lower frame 32.

The main lower frame 3 is mounted on the main lower frame 32.
6 is provided via a cylinder 35 for vertical shifting in the Z-axis direction. This main upper frame 36
A gun frame 37 is attached to the gun frame 37 by a spring 38 so as to be able to float in the vertical direction. The gun frame 37 is provided with a notch 39 and a tip 40 that is moved up and down by a gun cylinder 41, and further includes a nut feeder 46 and a clamp claw 48 that is operated by the cylinder 49.

A reversing device 13 for the workpiece W and a small plate 43 are installed between the hole drilling unit 11 and the nut welding unit 12 configured as described above. The reversing device 13 is a magnet 13 that attracts the workpiece W.
a, and is designed to be rotated 180 degrees by a motor 47. The long plate 43 is attached to the mounting frame 42 installed on the main base 10 by the hole-drilling unit 11 and the nut welding unit 12.
The cam followers 44 and 45 are fixedly installed along the axial movement direction, and on both side surfaces are formed surfaces that follow the position of the hole H drilled in the workpiece W and the welding position of the nut N. It's being pushed around.

Next, the operation of the above configuration will be explained with reference to FIG. In FIG. 3A, a work W is carried into the drilling unit 11 and is clamped by the crumple claws 26. As shown in FIG. On the nut welding unit 12 side, welding of the nut N is completed and the workpiece W, which is attracted to the magnet 13a of the reversing device 13, is carried out of the machine. Next, as shown in FIG. 3B, the punch 23 descends and hits the punch die 22 on the workpiece surface, and then the punch die 22 rises via the spring 21 to perform the drilling process. At this time, the reversing device 13
rotates 180° upwards and attracts the workpiece W. After drilling is completed, the clamp claw 26 is unclamped, and the reversing device 13 rotates 180 degrees downward to reverse the workpiece W, and the clamp claw 26 is rotated on the nut welding unit 12 side. Clamp with 48. Thereafter, as shown in FIG. 3D, raise the gun frame 37 and open the notch 3.
9 to protrude from the hole of the workpiece W. This upward movement of the gun frame 37 is performed by raising the main upper frame 36 by means of the cylinder 35. A nut N is supplied to the notch 39 protruding from the hole of the workpiece W by a nut feeder 46. Thereafter, the tip 40 moves downward to weld the nut N to the workpiece W, completing the cycle of drilling and welding the nut.

The above is a single drilling and nut welding cycle, but as shown in FIG. 2, when drilling and nut welding are performed at a plurality of different positions, the drilling unit 11 is moved and positioned in the X-axis direction. This is accomplished by the movement of the slide base 14 in the X-axis direction, the cam follower 44 coming into contact with the copying plate 43, and the movement of the main frame 17 forward and backward in the Y-axis direction. At this time, the punch die 22
The perforation frame 20 is floated by a spring 21 to eliminate contact.

After drilling a plurality of holes as described above, the workpiece W is turned over to the nut welding unit 12 side, the nut welding unit 12 is positioned in the X and Y axis directions, and a nut N is inserted onto each of the holes. are sequentially welded. Note that the spring 38 always keeps the notch 39 at 0 even if the welding surface varies in the Z-axis direction.
It floats to make it hit.

<Effects of the Invention> As described above, according to the present invention, the drilling, reversing, and nut welding of the workpiece are performed in a series of automatic operations using one device, so that the processing efficiency is significantly improved. In addition, the drilling unit and nut welding unit are moved and positioned along the processing position of the workpiece, and drilling and nut welding can be performed at multiple different positions. The number of nut feeders is reduced and equipment costs are reduced. Furthermore, it has the advantage that it can be used even if the drilling pitch and nut welding pitch are small, and that it can also be used even when additional drilling and nut welding locations are required.

[Brief explanation of drawings]

Fig. 1 is a front view of the inventive device, Fig. 2 is a plan view, Fig. 3 is an explanatory diagram of processing operation, Fig. 4 is a side view of a conventional drilling device, and Fig. 5 is a side view of a nut welding device. It is a diagram. 10...Main base, 11...Drilling unit, 12...Nut welding unit, 13...
Reversing device, 26...clamp claw, 46...nut feeder, 48...clamp claw.

Claims (1)

[Scope of utility model registration request] A hole drilling unit equipped with a work clamper and a nut welding unit are arranged at a constant interval on the main base, and a work reversing device is installed between the hole drilling unit and the nut welding unit to invert and transfer the workpiece. . A drilling and nut welding apparatus, characterized in that the nut welding unit is equipped with a nut feeder for feeding nuts onto the hole of the workpiece.