JPS632744B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wrapping machine for wrapping the main body of a connecting rod and the cap joint surface of the large end thereof.

Conventionally, when wrapping this type of workpiece, a simple magazine, which is a device for attaching and removing the workpiece to the general-purpose wrapping machine according to its shape, was used. In the wrapping process, the operator has to attach and detach the workpieces to and from the magazine each time. For this reason, there is a drawback that it takes a lot of time and effort to attach and detach the workpiece.

The present invention was devised for the purpose of eliminating the drawbacks of the conventional apparatus, and includes a loading station for setting the workpiece before processing, a processing station for wrapping the workpiece, and a loading station for setting the workpiece before processing, and a processing station for wrapping the workpiece. An unloading station on which objects are placed after being processed; a frame-shaped bridge installed to cover the upper part of each of the stations; The workpiece is held in place by a hanger driven by an air cylinder, moved to a processing station, and the machined surface of the workpiece is pressed with a constant pressure on the lap plate of the processing station, and the machined surface is slid. , a main operating mechanism that is attached to the bridge for moving the processed workpiece to the unloading station, and that moves horizontally in a reciprocating manner along the framework of the bridge by forward or reverse rotation of a motor; The main operating mechanism installed on the bridge automatically holds the workpiece, attaches it to the wrapping machine, wraps it, and unloads it after wrapping. This device reduces the number of man-hours required for attaching and detaching workpieces by an operator.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an overall perspective view of the wrapping machine of the present invention;
Figure 2 is a sectional view of the main operating mechanism in the center of Figure 1;
3 is a sectional view taken in the direction of arrow A in FIG. 2, and FIG. 4 is a side view taken in the direction of arrow B in FIG.

In the drawing, reference numeral 11 denotes a lapping machine which rotates clockwise to wrap the workpiece, and 12 a rotary head which rotates counterclockwise in the opposite direction to the above-mentioned lapping machine 11.

Reference numeral 13 denotes a bridge constructed at a high position by four vertically erected supports at the four corners of a rectangular framework in which flat rails 14 and chevron rails 15 are arranged substantially parallel and on the same horizontal plane.

Incidentally, the chevron rail 15 has a cross section perpendicular to the longitudinal direction of the rail that is chevron-shaped, and guides the rolling direction of the wheel corresponding to the chevron-shape.

16 is a ball screw with a mechanism in which a steel ball is interposed between a male screw and a ball nut, and the ball nut is moved in the axial direction of the male screw by rotating the male screw, and the arrangement of the ball nut is moved by normal rotation of the motor 19. The installed main operating mechanism is moved on the rails 14 and 15 to a loading station 17, which is a place where workpieces are loaded into a magazine (described later), or by reversing the motor, it is moved to the lapping machine 11 or the magazine. The workpiece is moved to an unloading station 18 where the workpiece loaded on the machine is removed.

Note that 20 is a stopper that restricts the amount of movement of the main operating mechanism.

Next, the main operating mechanism will be explained with reference to FIG.
Reference numeral 50 denotes the main body of the main operating mechanism, and the main body is equipped with wheels that roll on the flat rail 14 and the chevron-shaped rail 15, and a ball nut screwed into the ball screw 16. Reference numeral 23 denotes an air cylinder that moves the rotary head 12 up and down via a stay 52 that moves up and down guided by a head sleeve 53 on which the main shaft 51 slides and a guide rod 25. The rotary head 12 is equipped with a workpiece 4 as shown in FIG.
A magazine 22 is attached to which the magazine 3 can be attached and detached using a hanger 32. The hanger 32 is pivotally supported by a bearing case 40 fixed to the lower end of the rod 31 fitted into the main shaft 51, and when the air cylinder 21 connected to the upper end of the rod 31 is operated in the vertical direction, the hanger 32 is rotated by the chain line and the solid line in FIG. The link operation is performed using the lower surface of the rotary head 12 as a fulcrum at the position shown in FIG.

26 connects the rotary head 12 to the main shaft 5
It is a geared motor that rotates around a gear shaft 28 via a clutch 27 and a reduction gear, and a head sleeve 5 that is engaged with a spline.
3. Rotation is transmitted in order to the rotary head 12 extending to the head sleeve. The head sleeve 53 is fitted onto the main shaft 51 so as to freely slide in the axial and radial directions.
Further, the gear shaft 28 is externally fitted to the head sleeve 53 by spline engagement so as to freely slide in the axial direction.

Also, inside the rotary head 12 is a sun gear 29 fixed on the coaxial center of the main shaft 51, and a shaft portion that meshes with the sun gear 29 is attached to the rotary head 1.
2, and the lower end of the shaft part is attached to the magazine 22.
It has a built-in planetary gear 30 to which it is fixed.

Therefore, when the rotary head 12 rotates around the main shaft 51, the planetary gear 30 rotates along the sun gear 29, so that the magazine 22 revolves and rotates on its own axis.

24 is a V having a positioning pin 54 provided on the gear shaft 28 to ensure that the magazine 22 securely grips the workpiece at the loading station 17, so that the relative positions of the rotary head 12 and the loading station 17 are always at the same position. It is an air cylinder that protrudes into engagement with the groove.

33 is a proximity switch provided on the circumference of the rotary head 12, and when the rotary head 12 is stopped, the main operating mechanism body 50 and the rotary head 12 are connected to each other.
This sensor detects the timing to turn off the power to the geared motor 26 so that the relative position with respect to the geared motor 26 is always the same.

Reference numeral 41 denotes a stepped pin for pressing the workpiece disposed in the magazine 22, and the spring force of the coil spring 24 causes the workpiece to be pushed into the magazine 22 by the hanger 3.
2, and during the wrapping process, the wrapping machine 11 presses the processed surface of the workpiece with a constant pressure.

The operation of this embodiment will be explained.

A start button provided on the main operation panel (not shown) causes the motor 19 to rotate forward, and the ball screw 1
6, the main operating mechanism shown in FIG. 12 is the guide rod 25 and gear shaft 2
8 spline-engaging head sleeve 53
You will be guided down.

Initially, 12 connecting rods 43, which are workpieces, are set in the loading station 17 so that the axes of the connecting rods 43 are substantially perpendicular. The axes of the magazine 22 are substantially aligned, and the loading station 17
When the upper connecting rod 43 is set in the magazine 22, the state shown in FIG. 4 is obtained.

To set the connecting rod 43 in the magazine 22, as shown in FIG.
As a result of the operation, the rod 31 is pushed downward,
The connecting rod 43 in the magazine 22 is attached by the hanger 32 entering the semicircular portion at the end of the connecting rod 43.

Upon confirmation of the mounting completion limit switch (not shown), the air cylinder 23 for raising and lowering the rotary head 12 is operated, and the rotary head 12 is raised. After that, the motor 19 reverses, and the ball screw 1
6 moves the main operating mechanism shown in FIG.

Air cylinder 23 for upper and lower rotary head 12
At this point, the rotary head 12 is lowered again, and the hanger 32 is pulled out from the semicircular portion of the connecting rod 43 by the air cylinder 21 for attaching and detaching the connecting rod, and the rod 31 operated by the air cylinder 21, and the connecting rod 43 is attached to the lapping board 11. set above. The mounted connecting rod 43 is pressed onto the lapping plate 11 with a constant pressure by a stepped pin 41 urged by a coil spring 42. Here, the workpiece 43 is fed onto the lapping machine 11,
Preparation is complete.

Thereafter, the gear shaft 28 is rotated via the reduction gear by the operation of the geared motor 26 with a brake, and the rotary head 12 engaged with the gear shaft 28 is rotated in the direction of the arrow shown in FIG. 2 (counterclockwise). At this time, since the sun gear 29 is fixed to the main shaft 51, the magazine 22 fixed to the planetary gear 30 rotates while revolving around the sun gear 29.

At the same time as the geared motor 26 is started, a separately provided lap board drive motor is started, and the lap board 11 is started.
Rotate the rotary head 12 clockwise in the opposite direction.

The wrapping time is set by a timer, and after the specified processing is completed, the geared motor 2
A signal is issued to cut off the power supply to the geared motor 26, and the geared motor 26 stops at a substantially fixed position. At this time, there is some variation in the stopping position of the rotary head 12, and in order to correct this, a positioning pin is inserted into the V-groove provided on the gear shaft 28 via the indexing cylinder 24 to ensure accurate positioning and the rotation of the rotary head. Check the stop position of 12.

In order to transport the connecting rod 43 that has finished processing from the lapping machine 11, the connecting rod 4
3 to the magazine 22, rotary head 12
The lifting of the machine, movement to the unloading station 18, loading and unloading of the workpiece, etc. are performed by the reverse operation of the workpiece loading described above, and the series of operations is completed when the machine returns to the normal position before starting.

According to the wrapping machine of the present invention explained above,
The workpiece can be moved and wrapped automatically by button operation on the main operation panel, so it does not require much manpower, and one worker can handle two machines, which significantly reduces wrapping man-hours. Moreover, accurate wrapping processing can be performed, and the number of man-hours for attaching and detaching the workpiece is almost unnecessary, so there is an effect that a large cost reduction can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of the wrapping machine of the present invention;
Figure 2 is a sectional view of the main operating mechanism in the center of Figure 1;
3 is a sectional view taken in the direction of arrow A in FIG. 2, and FIG. 4 is a side view taken in the direction of arrow B in FIG. 11...lap board, 12...rotary head, 13
...Bridge, 14...Flat rail, 15...Chevron rail, 16...Ball screw, 17...Loading station, 18...Unloading station, 19...Motor, 20...Stopper, 21...Air cylinder, 22...Magazine, 23...Air Cylinder, 24... Air cylinder, 25... Guide rod, 26...
Geared motor, 27...Clutch, 28...Gear shaft, 29...Sun gear, 30...Planetary gear, 31...Rod, 32...Hanger, 33...Proximity switch, 4
0...Bearing case, 41...Stepped pin, 42...
Coil spring, 43...Connecting rod.

Claims (1)

[Claims] 1. A loading station for setting the workpiece before processing, a processing station for wrapping the workpiece, an unloading station for placing the workpiece after processing, and covering the upper part of each of the stations. The main operating mechanism is provided with a frame-shaped bridge constructed in such a manner as to be constructed as shown in FIG. The operating mechanism includes a main body that reciprocates on the bridge, a rotary head slidably provided on the main body, and a first air cylinder that is attached to the main body and moves the rotary head up and down with respect to the main body. a magazine rotatably attached to the rotary head; and a hanger having one end pivoted to the rotary head, a middle part pivoted to a rod that slides on the main body and the rotary head, and the other end moving in and out of the magazine. a second air cylinder that is attached to the first air cylinder side and moves the rod up and down relative to the rotary head; a geared motor that is attached to the main body and rotates the rotary head via a gear; It is formed of a stepped pin that is slidably provided in the magazine, and a coil spring that is interposed between the magazine and the stepped pin, and when wrapping the workpiece, the hanger is A wrapping machine, characterized in that the coil spring is separated from the workpiece and presses the processing surface of the workpiece against the wrapping machine of the processing station with a constant pressure.