JPH0434983Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a press conveyance device for a transfer press.

(Prior art) Various press processing (e.g. drawing, trimming,
flanges, cam flanges, etc.) using a plurality of molds installed in succession, a pair of feed bars that move up and down and back and forth, and a suction means installed between the feed bars to suck and convey the press work are provided. Conventionally, it has been frequently used to transport press work using a press transport device for a transfer press equipped with a large number of cross bars (see, for example, Japanese Utility Model Application Publication No. 11276/1983).

(Problems to be solved by the invention) In the press conveying device configured as disclosed in the above-mentioned known technology, since the suction means is normally fixedly attached to the crossbar, When used in a product with a narrow installation space, there is a risk that the press device and suction means may interfere with each other during press molding, which has been considered an important problem to be solved from the perspective of improving workability.

This invention was made in view of the above points,
The purpose is to make it possible to avoid interference between the press device and the suction means during press molding by making the position of the suction means with respect to the crossbar variable, even if the installation space between the molds becomes narrow. It is something.

(Means for Solving the Problems) In the present invention, as a means for solving the above problems, a pair of left and right feed bars that can be moved up and down and back and forth with respect to a series of press molding dies, and a pair of left and right feed bars are provided between the feed bars. In a press conveying device for a transfer press, which includes a large number of cross bars installed at predetermined intervals and configured to convey a press work, each of the cross bars has a direction in which the cross bar extends. A plurality of pinion members are rotatably supported at predetermined intervals, and each pinion member is meshed with the pinion members from both directions orthogonal to the workpiece feeding direction so as to be movable in mutually opposite directions, and the presswork can be sucked. a plurality of pairs of rack members having workpiece suction means at their ends configured to
a common rack arm that meshes with each of the pinion members and is movable along the crossbar; and a common rack arm that is connected to one end of the rack arm so that the rack member protrudes during workpiece conveyance and retreats during workpiece press forming. A cylinder is provided for moving the rack arm forward and backward in the direction.

(Function) In the present invention, the following effects can be obtained by the above means.

In other words, the pinion member rotates as the rack arm advances and retreats as the cylinder operates.
The rack member, which has a work suction means at the end, is protruded when transporting the work and is moved backward during work press molding, so even if the installation space between the molds is narrow, it can easily be used with the press equipment. This prevents the suction means from inadvertently interfering with each other, and it becomes possible to make the space between adjacent molds as narrow as possible.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the press conveyance device of this embodiment consists of a plurality of metal plates that are successively installed at equal intervals in order to continuously perform various press processes (e.g., drawing, trimming, flanging, cam flange, etc.). Type P,
A pair of feed bars 1, 1 which are used to sequentially convey press works W, W... onto P..., and which move up and down and back and forth;
a large number of crossbars 2, which have suction pads 3, 3... installed between them, and act as workpiece suction means for suctioning and conveying press works W, W...;
2. It is equipped with...

Each of the cross bars 2 includes a plurality of (three in this embodiment) pinion members 5, 5, 5 rotatably supported at predetermined intervals in the extending direction of the cross bar 2; The suction pad 3 is meshed with each pinion member 5 from both directions orthogonal to the workpiece feeding direction so as to be movable in opposite directions.
A plurality of pairs (in the case of this example, three pairs) having at the end thereof
Rack members 4, 4, 4, 4, 4, 4, and drive means 6 configured to rotate said pinion members 5, 5, 5 are provided.

The driving means 6 includes a cylinder 7 that moves forward and backward along the crossbar 2 in the crossbar 2.
and a common rack arm 9 connected to the tip of the piston rod 8 of the cylinder 7 and meshing with all of the pinion members 5, 5, 5.

Further, the pinion members 5, 5, 5 are arranged on the shafts 10, 1 at appropriate intervals on the cross bar 2.
It is rotatably supported by pins 0 and 10, and can be screwed into the rack arm 9.
In other words, the pinion members 5, 5, 5 are simultaneously reversibly rotated in response to the forward and backward movement of the rack arm 9 (the forward and backward movement in the direction of arrow A or B in FIG. 2).

Further, each pinion member 5 is screwed with a pair of rack members 4, 4 supported by support members 11, 11 provided on the cross bar 2 so as to be movable in the workpiece feeding direction. As the pinion member 5 reversibly rotates, the rack members 4, 4 move in opposite directions (i.e., arrow C in FIG. 1).
and direction D).
The cylinder 7 operates so as to be expanded when the workpiece is transported and contracted when the workpiece is press-formed, and by this operation, the rack members 4, 4... are made to protrude during the workpiece transport. , it is designed to be retracted during press molding.

Next, the operation of the illustrated press conveyance device will be explained.

This press conveyance device has the feed bars 1, 1 repeatedly moving up and down and back and forth.
Dies P, P...Press work W placed on top,
It acts to attract W... to the suction pads 3, 3... and transport them to the process in sequence, and when the workpiece is transported (i.e., at the time when the feed bars 1, 1 start to rise), the driving means 6 When the cylinder 7 constituting the motor is extended and the rack arm 9 is moved forward, the pinion members 5, 5, 5 rotate,
The rack members 4, 4, . . . are made to protrude as shown by the chain lines in FIG. Therefore, adjacent rack members 4,
The spacing between the suction pads 3, 3 at the four ends becomes wider, making it suitable for suctioning the press work W. Then, the feed bars 1, 1 are moved forward with the press work W being attracted to the suction pads 3, 3..., and after conveying the press work W onto the mold P for the next process, the suction pads 3, 3... This removes the adsorption caused by... After the suction is released, when the cylinder 7 is contracted, the rack arm 9 moves backward, the pinion members 5, 5, 5 rotate in the opposite direction, and the rack members 4, 4, . . . are moved backward as shown by the solid line in FIG. It will be done. Therefore, the suction pads 3, 3... provided at the ends of the rack members 4, 4... are positioned close to each cross bar 2, and the upper part of each mold P becomes an open space, and the adjacent Even when the space between the molds P and P is narrow, the press device (not shown) and the suction pads 3, 3...
Interference with... will be avoided.

It goes without saying that the present invention is not limited to the configuration of the above-described embodiments, and that the design can be changed as appropriate without departing from the gist of the invention.

(Effect of the invention) As described above, according to the invention, there is provided a pair of left and right feed bars that can move up and down and back and forth relative to a series of press molding dies, and a pair of left and right feed bars that are installed with a predetermined interval between the feed bars. In a press conveying device for a transfer press, which is equipped with a large number of cross bars configured to convey press work, each of the cross bars is rotatably pivoted at predetermined intervals in the direction in which the cross bars extend. A plurality of supported pinion members and a work suction means configured to be engaged with each of the pinion members from both directions perpendicular to the workpiece feeding direction so as to be movable in opposite directions and capable of suctioning the press work. A common rack arm is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm, and is connected to one end of the rack arm. A cylinder is provided for advancing and retracting the rack arm in the direction of protruding during transportation and retracting during work press forming, and a pinion member that is rotated by the forward and backward movement of the rack arm accompanying the operation of the cylinder allows the work suction means to be attached to the end. The rack member is made to protrude when transporting the workpiece, and is retracted during workpiece press forming, so the position of the workpiece suction means during workpiece press forming is much closer to the crossbar than during workpiece transport. Even if the installation space between molds becomes narrower, the press equipment and suction means will not inadvertently interfere with each other, and the space between adjacent molds can be made as narrow as possible, reducing the space occupied by the equipment. This has the practical effect of reducing the size of the area.

Furthermore, since each means (i.e., a pinion member, a rack arm, and a cylinder) constituting a mechanism for operating rack members equipped with workpiece adsorption means in opposite directions, is arranged on the crossbar, This greatly contributes to making the entire device more compact, and since one pinion member can simultaneously move two rack members in opposite directions, it also has the effect of simplifying the structure and reducing weight.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the main parts of a press conveyance device according to an embodiment of the present invention, and Fig. 2 is a -
It is an enlarged sectional view. 1...Feed bar, 2...Cross bar, 3...
...Adsorption means (adsorption pad), 4...Rack member,
5...Pinion member, 6...Driving means, P...Mold, W...Press work.

Claims (1)

[Scope of utility model registration request] It is equipped with a pair of left and right feed bars that can move up and down and back and forth with respect to a series of press molding dies, and a number of cross bars that are installed at a predetermined interval between the feed bars and are configured to convey the press work. A press conveying device for a transfer press, wherein each of the cross bars includes a plurality of pinion members rotatably supported at predetermined intervals in the extending direction of the cross bar, and each of the pinion members. a plurality of pairs of rack members having workpiece suction means at their ends that are meshed with each other from both directions perpendicular to the workpiece feeding direction so as to be movable in mutually opposite directions and configured to be capable of suctioning the presswork; a common rack arm that meshes with the pinion member and is movable along the crossbar;
A press conveyance device, characterized in that a cylinder is connected to one end of the rack arm and moves the rack arm forward and backward in a direction in which the rack member protrudes during workpiece conveyance and retreats during workpiece press molding.