JPH069775B2 - Crank Shaft Attitude Control Device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a posture control device for a crankshaft, particularly for a motorcycle, which is used during inter-process transportation.

(Prior Art) When performing a series of processing on a work using a plurality of processing machines,
A sheet made of steel plate is arranged with a gradient between each processing machine,
A method of using the gradient to convey the work to the next step is adopted. This method is suitable for high-mix low-volume production because it does not require a large amount of cost and time for equipment, but has a problem that manpower is required each time a work is attached to the next processing machine.

(Purpose) The present invention is particularly directed to a crankshaft for a motorcycle, and as a means for automatic attachment / detachment thereof, provides a new device for converting a work received from a transfer device into a posture that a transfer robot can easily grasp. The purpose is to do.

(Means for Achieving the Purpose) That is, the feature of the present invention is that the receiving position of the crankshaft disposed below the terminal end of the conveyor in the conveying direction and falling from the conveyor and the receiving member are easy to grasp. The gripping member that is oscillated and displaced between the crankshaft and the posture position is composed of upper and lower guide members that guide the disk portion of the crankshaft, and a support member that can move back and forth for positioning and supporting the shaft portion of the crankshaft. At the same time, a rod member provided with a taper portion that abuts a part of the support member on the gripping member and adjusts the front-rear direction position of the support member is movable in a direction perpendicular to the moving direction of the support member. It is in the attitude control device for the crankshaft.

(Examples) Therefore, the details of the present invention will be described below based on illustrated examples.

The drawings show an embodiment of the present invention, in which reference numeral 1 is used to receive a crankshaft w slipped off from a transfer end portion of a chain conveyor 30 and set it in a direction that is easily grasped by a transport robot (not shown). In the grip frame main body for conversion, the grip frame 1 is rotatably pivotally attached to a bracket 21 fixed on a base 20 with a pin 22.
It is configured to be reciprocally driven by the gripping frame main body drive cylinder 23 provided on the base 520 from the oblique receiving posture shown in FIG. 1 to the robot receiving posture shown in FIG.

This device will be described in more detail. The grip frame main body 1 is composed of a lower guide plate 2 and an upper guide plate 3 which are integrally joined at the rear end.

The lower guide plate 2 has its tip lower surface at the caterpillar of the chain conveyor 30 so that the disk portion d of the crankshaft w that has slid down from the end portion of the chain conveyor 30 can be smoothly transferred in the receiving posture shown in FIG. 31
The upper guide plate 3, which is formed as a flat plate that is cut away diagonally along the surface, and which is opposed to the upper side, has a V-shaped taper portion 3a (first portion) at its front edge so as to receive the shaft portion s of the crankshaft w. 4) is provided as a flat plate. Further, on the upper guide plate 3, intermediate guide plates 4 and 4 each having a taper portion 4a at the tip lower surface for receiving the disk portion d and positioning in the thickness direction are provided on both sides of the lower surface of the tip portion of the lower guide plate. It is integrally fixed with a gap for receiving the disc portion d between the auxiliary plate 5 and the rear plate 2, and an auxiliary plate 5 protruding rearward is integrally fixed on the upper surface thereof. The end is a pin 25 on the end of the piston rod 24 of the cylinder 23 arranged on the base 20.
Are combined with.

On the other hand, between these two guide plates 2 and 3, two rods 7, which are movable back and forth along the back surface of the upper guide plate 3,
7 is inserted into the shaft bearings 8 and 8, and a block 9 for positioning the shaft portion s of the crankshaft w is fixed to the tip of these bearings 8 by a V groove 9a (FIG. 4) on the front surface. The lower ends of these rods 7 and 7 are integrated by a connecting blade 11, and the connecting blade 11 is brought into contact with an adjustment 12 which will be described later by a spring 10 interposed between the bearings 8 and 8 and the block 9. Is urged forward.

The above-mentioned adjusting rod 12 is for adjusting the positioning of the block 9 according to the shaft diameter of the crankshaft w, and this tapered rod 12 is provided by the adjusting rod driving cylinder 13 fixed on the auxiliary plate 5. The guide plates 2 and 3 are mounted so that they can move in a direction perpendicular to the surfaces thereof.

On the other hand, at the lower end of the connecting blade 11 described above, a rod 14 provided with an engaging portion 14a at its end is provided in a protruding manner.
When the grip frame main body 1 takes the delivery posture shown in FIG. 2, the block 4 is engaged with the locking portion 27 provided at the piston rod end of the return cylinder 26 arranged on the base 20, and the block 9
Is retracted to a position where it does not contact the grip of the robot.

In the figure, reference numeral 15 is a clamp rod that is driven by the cylinder 16 to fix the shaft end of the crankshaft w received in the gripping frame body 1, and 17 is a detection that detects the crankshaft w in the gripping frame body 1. Reference numeral 32 in FIG. 1 denotes a sensor, and reference numeral 32 in FIG. 1 indicates the crankshaft w driven by the cylinder 33 and rocked to be conveyed by the conveyor belt 30 one by one at a timing.
It shows an escapement-type feeding device for feeding toward.

In the apparatus constructed as described above, first, the gripping frame body 1 is driven to swing by the cylinder 23, and the front open ends formed by the upper and lower guides 2 and 3 are inclined at an angle of about 45 ° to the chain conveyor 30. It faces the bottom of the terminal part (Fig. 1).

Under this condition, when one crankshaft w released by the delivery device 32 slides down from the end of the conveyor 30 into the grip frame body 1, the disc portion d thereof is released.
Is received between the lower guide plate 2 and the intermediate guide plate 4, and at the same time, the shaft part s is tapered by the taper part 3 a of the upper guide plate 3.
V groove 9a of the block 9 located on the back surface of the guide plate 3 through
Listed above.

By the way, the adjusting rod 1 provided at the lower end of the gripping frame body 1
Since 2 occupies a position corresponding to the shaft diameter of the crankshaft w that is driven by the cylinder 13 and is received in advance (FIG. 3), the connecting plate 11 that is urged by the spring 10 and abuts against the adjusting rod 12 is The block 9 is positioned at the contact position with the rod 7.

Therefore, when the shaft portion s is placed here, its center exactly coincides with the shaft center of the clamp rod 15, so that the cylinder 16 is actuated next to press the shaft portion s by the clamp rod 15 to fix the crankshaft w. (Fig. 1).

Next, the cylinder 23 rotates the gripping frame body 1 counterclockwise in the figure to bring the held crankshaft w into a posture in which the robot can easily grip it. Then, when the rod 14 at the lower end of the connecting plate 11 engages with the locking portion 27 at the end of the rotation, the return cylinder 26 lowers the locking portion 27 at the tip of the piston rod, and the block 9 is moved to the crankshaft via the rod 14. The crankshaft w is delivered to the robot, away from the shaft s of w (FIG. 2).

(Effect) As described above, according to the present invention, the swing displacement is provided below the end portion in the conveying direction of the conveyor between the receiving position of the crankshaft that slides down from the conveyor and the posture position of the crankshaft where the receiving member can easily grip. Since the gripping member is provided, the conveyed crankshaft can be received and automatically converted into a posture suitable for the next process, and this type of work can be greatly labor-saving.

Moreover, the gripping member is provided with a movable supporting member for supporting the shaft portion of the crankshaft, and the vertical position of the supporting member is adjusted by the rod member having the taper so that it is conveyed by the conveyor. The attitude control device can be constantly adapted to various crankshafts having different shaft diameters.

[Brief description of drawings]

1 to 3 are side views of an apparatus according to an embodiment of the present invention shown in various operating states, and FIG. 4 is a plan view showing a main part of the same apparatus. 1 ... Grip frame body 2 ... Lower guide plate 3 ... Upper guide plate 4 ... Intermediate guide plate 9 ... Block 12 ... Adjustment rod 13 ... Adjustment rod drive cylinder 15 ... Clamp rod 23 ... Cylinder for driving the gripping frame body 26 ... Return cylinder 30 ... Conveyor w ... Crankshaft d ... Disk section s ... Shaft section

Claims (1)

[Claims] 1. A conveyor is arranged below a terminal end in a conveying direction,
A gripping member that swings between the receiving position of the crankshaft that falls from the conveyor and the posture position of the crankshaft where the receiving member can easily grip the upper and lower guide members that guide the disk portion of the crankshaft. A taper portion which is composed of a supporting member which is movable in the front and rear direction for positioning and supporting the shaft portion of the crankshaft, and which is brought into contact with the gripping member with a part of the supporting member to adjust the longitudinal position of the supporting member. A crankshaft attitude control device, wherein a rod member provided with is disposed so as to be movable in a direction perpendicular to the moving direction of the support member.