JPS6121181Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cable connection device to a mobile trolley.

For example, in welding robots and special machines that spot-weld many points on a flat surface,
A portable spot welding gun is placed on a cart that moves in two or more axial directions, and welding is performed while the cart is moved along a predetermined pattern. In this case, cables such as hoses and electric wires for supplying power and pressurizing air for the welding gun or signals for controlling the movement of the cart must be connected to the moving cart, and these cables must be connected to the moving cart. The connection must be maintained in such a way that it does not interfere with the movement of the equipment.

Therefore, conventionally, as shown in FIG. 1, a cable connecting device to a movable cart using a cable guide link has been used. In the figure, 1 is the base, 2
3 is a rail in the X-axis direction fixed on the base, 3 is an X-axis movable trolley placed on the rail 2 via wheels (not shown), and 4 is fixed on the trolley 3. A Y-axis direction rail 5 is a Y-axis movable truck placed on the rail 4 via wheels (not shown), and a welding gun (not shown), for example, is placed on the truck 5. do. Both of the above-mentioned carts 3 and 5 are configured to be movable in the X-axis and Y-axis directions, respectively, by a movement control device (not shown). Reference numerals 6 and 7 indicate cable guide links constituting the cable connection device, such as Cable Bear (product name). Link 6 has both ends fixed to base 1 and truck 3, and link 7 has both ends fixed to truck 3. X, Y of the carts 3 and 5 while holding the cable 8 together.
It is configured to move and bend as it moves in the axial direction.

However, in such conventional cable connection devices, the cable guide link is expensive, the movement and bending of the guide link creates a flat dead space (portions A and B surrounded by two-dot chain lines), and It has the disadvantage that it is difficult to repair cables such as hoses and electric wires.

In view of the above-mentioned circumstances, an object of the present invention is to provide a cable connection device to a movable trolley that is inexpensive, does not require flat dead space, and allows easy maintenance of cables such as hoses and electric wires.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

FIG. 2 is a perspective conceptual diagram showing an embodiment of the cable connection device according to the present invention, and shows 1, 2, 3, 4,
5 and 8 are the same bases as in Figure 1, respectively.
These are an X-axis direction rail, an X-axis direction movable trolley, a Y-axis direction rail, a Y-axis direction movable trolley, and a cable. As shown in the figure, the cable connection device according to the present invention includes a cable holding means 10 for movably holding the cable 8 in a straight line, which is disposed above the trolley 5, and the holding means 10 is used to move the cable 8. It is configured to be rotatable within a plane perpendicular to the direction (in this embodiment, the X-axis direction) (in this embodiment, within a plane including the Y-axis, that is, in the direction of arrow C), and the cable of the trolley 5 is The carriage 5 and the holding means 10 are engaged with each other so that the holding means 10 rotates in the direction of arrow C as the holding means 10 moves in a direction perpendicular to the moving direction (movement in the Y-axis direction).

The holding means 10 consists of a wire rope 12 stretched linearly in the X-axis direction, and a plurality of cable suspension trolley pulleys 13 that freely move on the rope 12. The engaging rod 14 is provided. The holding means 10 is supported by two columns 11, and the columns 11 are pivotably supported on the base 1 so as to be rotatable in the direction of arrow C. Further, the carriage 5 is provided with a guide member 15 having a U-shaped groove 15a that engages with the engagement rod 14, and the U-shaped groove 15a narrows the engagement rod 14 in the Y-axis direction. The two are engaged.

According to the cable connection device configured as described above, when the carriage 5 is moved in the X-axis direction by the carriage 3, the holding means 10 remains in the same position as the pulley 1.
3 moves following the movement of the trolley 5, and the cable 8 follows the trolley 5. In this case, the slack between the pulleys 13 serves as a cushion, so there is no risk that the cable will be subjected to excessive force. When the truck 5 moves in the Y-axis direction, the engagement rod 14 is rotated by the U-shaped groove 15a of the guide member, and the entire holding means 10 follows the movement of the truck 5 in the Y-axis direction. Since the cable 8 rotates and moves, the cable 8 follows the movement of the cart 5 without being subjected to excessive force.

Note that when the holding means 10 rotates in the Y-axis direction, the position of the engaging rod 14 moves up and down, so it is desirable that the height H of the support column 11 is set appropriately high in order to reduce the vertical movement range D.

Since the cable connection device according to the present invention is configured as described above, it has the following effects.

(1) The cable 8 smoothly follows the movement of the cart 5 without being subjected to excessive force, and there is no fear that the cable 8 will obstruct the movement of the cart 5.

(2) It has a simple structure, can be manufactured easily, and is inexpensive because it does not require expensive guide links unlike conventional devices.

(3) Unlike conventional devices, there is no flat dead space.

(4) Since there is no need to incorporate the cable into the guide link as in conventional devices, maintenance of the cable is easy.

Note that the device according to the present invention can be modified in various ways without departing from the gist thereof, and is not limited to the device shown in the drawings. In particular, cable retention means,
The rotation means of the holding means and the engagement between the holding means and the carriage can be modified in various ways using known techniques.

[Brief explanation of the drawing]

FIG. 1 is a perspective conceptual diagram showing an example of a conventional device, and FIG. 2 is a perspective conceptual diagram showing an embodiment of the device according to the present invention. 5...Moving trolley, 8...Cable, 10...Cable holding means.

Claims (1)

[Scope of utility model registration request] A cable holding means for holding the cable in a linearly movable manner is disposed above the movable dolly, the holding means is configured to be rotatable in a plane perpendicular to the moving direction of the cable, and the movable dolly A cable connection to a movable carriage, characterized in that the movable carriage and the cable holding means are engaged with each other so that the holding means rotates as the cable moves in a direction perpendicular to the direction of movement of the cable. Device.