JP2849782B2 - Air-driven transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-driven transfer device for transferring a carriage by supplying pressurized air.

[0002]

2. Description of the Related Art A conventional air-driven transfer device is shown in FIG. This air-driven transfer device arranges a flexible tube 22 to which a supply source of pressurized air is connected along a transfer guide rail 24 of a carriage 23, and the carriage 23 includes:
Tube sandwiching roller for sandwiching and crushing the tube 22
25 and 26 are provided so as to be rotatable around an axis in a direction orthogonal to the transport direction of the truck 23.

According to such a configuration, the flexible tube
When pressurized air is supplied to one end of the tube 22, the tube portions crushed by the tube clamping rollers 25 and 26 are sequentially expanded, whereby the tube clamping rollers 25 and 26 are opened.
Rotates, and accordingly, the carriage 23 moves to the guide rail 24.
Along with the other end of the flexible tube 22.

[0004] Such an air-driven transfer device is frequently used in various lines for assembling an automobile, for example. However, in this conventional transfer device, the traveling direction of the carriage 23 is linear or two-dimensional. There was room for improvement in that it was limited to only curves.

That is, for example, when the tube holding rollers 25 and 26 are provided rotatably about a horizontal axis, even if the transfer guide rail 24 of the carriage 23 is curved in the vertical direction, the tube holding The crushing surface of the tube 22 by the rollers 25 and 26 is bent so as to be curved vertically in the longitudinal direction and follows the upper and lower curved directions of the guide rail 24, so that the bogie 23 is easily moved up and down without forcing the tube 22. The vehicle can be driven on a curved part.

Alternatively, when the tube holding rollers 25 and 26 are provided rotatably about the vertical axis, the tube holding roller 25 of the carriage 23 may be curved in the horizontal direction. Since the crushing surface of the tube 22 by 25 and 26 is bent so as to be curved right and left in the longitudinal direction, and along the horizontal curve direction of the guide rail 24,
The bogie 23 can be turned around without difficulty, without forcing the tube 22.

[0007]

However, when the tube sandwiching rollers 25 and 26 are provided rotatably about a horizontal axis, the guide rail 24 is horizontally moved so that the carriage 23 turns horizontally. 7, the crushed surface of the tube 22 by the tube clamping rollers 25 and 26 is forced to curve in the horizontal direction, as shown in FIG. 7, or the tube clamping rollers 25 and 26 are Although not shown, when the tube 22 is rotatably provided around the vertical axis, the crushing surface of the tube 22 by the tube clamping rollers 25 and 26 is forcibly curved in the vertical direction.

The fact that the amounts of movement of the tube clamping rollers 25 and 26 relative to the tube 22 differ in the axial direction is synergistic, so that an excessive pulling force is applied to a portion of the curved tube 22 outside the radius of curvature. In addition, an excessive compression force is applied to the portion inside the radius of curvature, causing an excessive displacement of the flexible tube 22 and the tube clamping rollers 25 and 26. It was actually impossible to turn the bogie 23 in a direction along the crushed surface.

If the guide rail for transporting the carriage is twisted and curved in the longitudinal direction and the carriage is transported along the guide rail, the tube clamping rollers are sequentially moved along the guide rail. By changing the posture, the bogie can be turned around without exerting excessive force on the flexible tube. However, there is an inconvenience that the bogie is changed to the rollover posture.

According to the present invention, a supply source of pressurized air is connected.
Align the flexible tube with the transport guide rail of the truck
On the other hand, the tube is sandwiched between the carts
Push the crushing tube pinching roller in the transport direction of the truck.
Pneumatic drive that is rotatable around the axis in the direction perpendicular to
A formula conveying device, by an extremely simple and rational improvement, be adapted to pivot the carriage in three-dimensional directions
As an issue.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a truck which can be transported along the guide rail for transport, and a roller which is rotatable about an axis along the transport direction of the truck. It is characterized in that a holding member is provided, and a tube holding roller is attached to the roller holding member.

[0012]

According to the above feature, for example, the guide rail is curved in the horizontal direction, and the rotation axis of the tube holding roller holding the flexible tube is oriented in the horizontal direction. When pressurized air is supplied to the flexible tube, the tube clamping roller rotates and the carriage is transported accordingly.

When the tube-clamping roller reaches the curved portion of the guide rail, the tube-clamping roller cannot move in the horizontal direction. The trolley starts to turn around an axis along the transport direction of the bogie, whereby the crushing surface of the tube by the tube clamping roller curves so as to be sequentially twisted.

That is, when the roller holding member rotates in accordance with the curve of the bogie, the crushed surface of the flexible tube twists the flat member at 90 degrees in the longitudinal direction to 90 degrees. It draws a locus like a bend, and the tube pinching roller, which was rotatable around the horizontal axis until then, is repositioned to be rotatable around the vertical axis, and the cart is leveled without difficulty The vehicle can be turned in the direction.

[0015] In addition, as described above, in the case of a turning configuration in which the tube crushing surface of the tube is curved in the longitudinal direction by the tube clamping roller, the bogie can be turned smoothly without burdening the tube. Therefore, as a whole, by changing the posture of only the tube holding roller integrally with the roller holding member, the bogie can be turned in the three-dimensional direction without disturbing the running posture.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an air-driven transfer device. In these drawings, reference numeral 1 denotes a pair of left and right guide rails provided on a frame 2 and 3 denotes a pair of guide rails disposed along the guide rail 1. A flexible tube with two ends
As shown in (1), a supply source 4 of pressurized air is connected via a valve V having a supply / exhaust port and a supply / exhaust stop port.

Reference numeral 5 denotes a carriage to be transported along the guide rail 1. The carriage has three guide rollers 7 at four corners on the lower surface side of the article transfer base 6 for the upper surface and the inner surface of the guide rail 1. A bracket 8 is rotatably mounted around an axis in a vertical direction, and a roller support member 9 is provided on both sides of the base 6 in the direction in which the carriage is transported.

A tube through hole a for penetrating the flexible tube 3 is formed in the roller support member 9, and around the tube through hole a of the roller support member 9, Four rollers 10 with V-grooves that are freely rotatable about an axis along the transfer direction are pivotally mounted.

A roller holding member 11 is rotatable with respect to the carriage 5 around an axis along the transfer direction of the carriage 5,
The two plate-shaped annular members 12 having the through-holes b formed concentrically with the tube through-holes a are connected to the four V-groove rollers.
A pair of plate-like members 13 are provided so as to be rotatable by 10 and extend over the two annular members 12.

Reference numerals 14 and 15 denote three tube clamping rollers, of which a support shaft 16 rotatably holding the two tube clamping rollers 14 is spaced apart from each other by a predetermined distance. A support shaft 17 which is fixedly provided on the pair 13 and rotatably holds the remaining one tube clamping roller 15 is movably engaged in a long hole c formed in the pair of plate members 13. Have been.

Reference numeral 18 denotes both ends of the support shaft 17 and a pair of plate-like members 13.
As shown in FIG. 4, the one tube pinching roller 15 is urged to enter between the peripheral surfaces of the two tube pinching rollers 14, and the flexible The tube 3 is configured to be pinched and crushed by three tube pinching rollers 14 and 15. 19
Are four guide rollers for preventing the flexible tube 3 from swaying, and are provided around the through hole b of the annular member 12.

According to the above configuration, as shown in FIG.
The valve V connected to one end of the flexible tube 3 is switched to an air supply state, and the valve V connected to the other end is switched to an exhaust state. Is supplied, the tube portions crushed by the tube sandwiching rollers 14 and 15 are sequentially expanded to rotate the tube sandwiching rollers 14 and 15, and the carriage 5 is moved along the guide rail 1 by the flexible It is transferred to the other end of the sex tube 3.

Then, with the rotation axes of the tube clamping rollers 14 and 15 oriented, for example, in the horizontal direction, the carriage 5
When the tube reaches the ascending (or descending) curve of the guide rail 1, the crushing surface of the tube 3 by the tube sandwiching rollers 14 and 15 is bent so as to bend up and down in the longitudinal direction, and the tube 3 is pushed. Since the crushed surface is along the upper and lower curve directions of the guide rail 1, the bogie 5 travels on the upper and lower curve portions without forcing the flexible tube 3.

In this state, that is, the tube clamping roller
When the carriage 5 reaches the right (or left) curve of the guide rail 1 in a state where the rotation axes of the tubes 14 and 15 are oriented, for example, in the horizontal direction, it is difficult to move the tube clamping rollers 14 and 15 in the horizontal direction. By doing so, the tube pinching rollers 14, 15
The roller holding member 11 attached with starts to rotate around the axis along the transport direction of the carriage 5, whereby the crushing surfaces of the tubes 3 by the tube clamping rollers 14, 15 are curved so as to be sequentially twisted.

The posture of the tube clamping rollers 14 and 15 which have been rotatable about the horizontal axis is changed to a state where they can be rotated about the vertical axis. 5. The bogie 5 turns smoothly in the horizontal direction in the left and right curved portions, and the bogie 5 is rotated by rotating the tube holding rollers 14, 15 together with the roller holding member 11 around an axis along the transport direction of the bogie 5. The carriage 5 can be caused to travel in the three-dimensional direction without difficulty in the state of being translated.

To stop the transfer of the carriage 5, the valve V connected to one end of the flexible tube 3 is switched to a state where supply and exhaust are stopped, and preferably, the flexible tube 3 is stopped.
This is performed by instantaneously switching the valve V connected to the other end of the valve to the air supply state. On the other hand, the flexible tube 3
By switching the valve V connected to one end of the flexible tube 3 to an exhaust state and the valve V connected to the other end to an air supply state to supply pressurized air to the other end of the flexible tube 3. , The carriage 5 is transferred in the reverse direction.

[0027]

As described above, according to the air-driven transfer device of the present invention, the carriage is parallelized by rotating the tube holding roller together with the roller holding member around the axis along the transport direction of the carriage. The carriage can be moved in the three-dimensional direction without difficulty in the state of being moved, and as a whole, the versatility of the air-driven transfer device can be enhanced by extremely simple and reasonable improvement. is there.

[Brief description of the drawings]

FIG. 1 is an overall front view of an air-driven transfer device.

FIG. 2 is a side view of a main part of the carriage in the air-driven transfer device.

FIG. 3 is a plan view of a base of the air-driven transfer device as seen through;

FIG. 4 is an explanatory view of crushing a tube by a tube clamping roller.

FIG. 5 is an explanatory diagram of traveling of a bogie.

FIG. 6 is a side view of a conventional air-driven transfer device.

FIG. 7 is an explanatory diagram showing an inconvenient turning traveling state of a bogie in a conventional air-driven transfer device.

[Description of Signs] 1 ... guide rail, 3 ... flexible tube, 4 ... pressurized air supply source, 5 ... cart, 11 ... roller holding member, 14, 15
... Tube clamping roller.

Claims (1)

(57) [Claims] 1. A tube for arranging a flexible tube to which a supply source of pressurized air is connected along a guide rail for transporting a trolley, and holding the tube on the trolley to crush the tube. An air-driven transfer device provided with a pinching roller rotatably around an axis in a direction orthogonal to the transport direction of the truck, wherein the carrier is rotatable about an axis along the transport direction of the truck. And a roller holding member, and the tube holding roller is attached to the roller holding member.