JPH0313929B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Object of the Invention (1) Industrial Application Field The present invention provides a method for moving a workpiece to a plurality of processing stations set at intervals along the conveyance direction of the workpiece. A plastic processing machine is equipped with a lower mold and an upper mold for plastic processing, and a horizontal handling bar perpendicular to the transport direction of the workpiece is placed on standby between each processing station during plastic processing, and the plastic processing is completed. The present invention relates to a workpiece conveyance direction in which the workpiece is sometimes moved between adjacent processing stations, and the workpiece is detachably held by a holding member protruding from a handling bar in the front and rear directions along the conveyance direction and sequentially conveyed.

The reason why the holding member is made to protrude in this way is to hold a relatively large workpiece in a well-balanced manner.

(2) Conventional technology Conventionally, when transporting a workpiece in such a plastic processing machine, a holding member is fixedly disposed on the handling bar, and the workpiece is held and transported by the holding member. .

(3) Problems to be solved by the invention By the way, during plastic working, the handling bar waits between each processing station, but the holding member
Since it protrudes from the handling bar in the front and back directions along the conveyance direction of the workpiece, in the conventional type,
In order to prevent the holding member from interfering with the plastic working operation by the lower die and the upper die, the interval between each processing station must be widened by the amount of the holding member protruding from the handling bar.

The present invention has been made in view of the above circumstances, and provides a workpiece conveyance direction in a plastic processing machine that makes it possible to reduce the interval between each processing station and thereby downsize the plastic processing machine. The purpose is to

B. Structure of the Invention (1) Means for Solving Problems According to the method of the present invention, during plastic working, the holding member is moved along the handling bar to move it out of the working space of the lower mold and the upper mold. I made them evacuate.

(2) Effect During plastic working, the holding member is retracted outside the working space, and the distance between the working stations can be reduced accordingly.

(3) Embodiment Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. First, in FIG. The first to third processing stations S1, S2, and S3 are set in a straight line at intervals, and each processing station S1
~S3 are provided with lower molds 3 ₁ to 3 ₃ and upper molds 4 ₁ to 4 ₃ for working together to press work W, respectively. That is, each of the lower molds 3 ₁ to 3 ₃ is attached to the base 5
Upper molds 4 1 to 4 3 are supported by holders 8 fixed to the upper bolster 6 and fixed to the lifting table 7 in correspondence with the lower molds _{3 1} to 3 _{3 ,} respectively. Further, a loading stage Si is provided behind the base 5 and the bolster 6 along the transport direction 2, and an ejection chute is provided in front of the base 5 and the bolster 6 along the transport direction 2.
Se is provided.

This press machine 1 is equipped with a conveying device 9, and the pressing operation of the lower dies 3 ₁ to 3 ₃ and the upper dies 4 ₁ to 4 ₃ by lowering the lifting table 7 and the conveying operation by the conveying device 9 are alternately carried out. The workpiece W carried onto the conveyor table Si is transferred to each processing station S1 to S3.
After being sequentially pressed on the top, the discharge chute Se
is discharged from.

This conveyance device 9 is connected to each processing station S1 to
A pair of transfer bars 10 arranged parallel and horizontally on both sides of S3, a plurality of handling bars 11 installed horizontally between the transfer bars 10, and each handling bar 1.
Suction cups 12 as a plurality of holding members provided in 1
Equipped with.

Both transfer bars 10 are driven horizontally and vertically in synchronization, and as a result, each handling bar 11 is moved between each processing station S1 to S3 during plastic processing at each processing station S1 to S3. Between Si and the first processing station S1 and the third processing station S
3 and discharge chute Se, and at the end of plastic working, between the loading table Si and the first processing station S1, each processing station S1, S2;
S3 and between the third processing station S3 and the discharge chute Se.

In FIGS. 2 and 3, the handling bar 11 has a cylindrical shape with a rectangular cross section, and both ends thereof are fixed to both transfer bars 10. As shown in FIGS. A pair of elongated holes 13a, 1 extending in the longitudinal direction of the handling bar 11 are provided on one side of the handling bar 11.
4a are provided with a space between them. The other side of the handling bar 11 has the long holes 13a,
A pair of elongated holes 13a and 14a corresponding to 14a are provided.

The elongated holes 13a, 13b; 14a, 14b are provided with a support shaft 1 movable along their longitudinal direction
5, 16 are inserted, and the elongated holes 13a, 13b; 14
A pair of suction cups 12 are respectively disposed via arms 17 and 18 at both ends of support shafts 15 and 16 protruding from a and 14b. That is, two sets of four suction cups 12 are provided in the long holes 13a, 13b;
It is movable in the longitudinal direction of the handling bar 11 within the range defined by a and 14b, and is supported on the handling bar 11 with an interval between them.

Elongated holes 13a, 13 in the handling bar 11
b; On the outside of 14a and 14b, a driven wheel 19 and a driving wheel 20 having parallel axes are rotatably arranged, and the driven wheel 19 and the driving wheel 20 are equipped with an endless power transmission cable 21 such as a chain or a belt. is being hung up on. Furthermore, a drive source 22, for example, a pulse motor, which can be switched between normal rotation and reverse rotation, is connected to the drive wheel 20 in order to drive the transmission cable 21 to travel.

The support shafts 15 and 16 are connected to the transmission cable 21,
In order to make the directions of movement of both support shafts 15 and 16 opposite to each other, one support shaft 15 is connected to the power transmission cable 21 at the upper side, and the other support shaft 16 is connected to the power transmission line 21 at the lower side.

In this way, the support shafts 15 and 16 are connected to the drive source 22.
The elongated holes 13a and _13b ; ₃ and the upper molds 4 ₁ to 4 ₃ (indicated by two-dot chain lines in FIG. 3), each suction cup 12 is set so as to be retractable.

Next, to explain the operation of this embodiment, during plastic working at each processing station S1 to S3, each handling bar 11 is placed between the loading table Si and the first processing station S1 at each processing station S1, S2; S3 and between the third processing station S3 and the delivery chute Se, but at this time, each suction cup 12 is retracted outside the working space 23, as shown by the two-dot chain line in FIG. Therefore, both adjacent working spaces 23
In other words, only the handling bar 11 exists between the processing stations S1 to S3, and even if the distance between the processing stations S1 to S3 is made relatively small, there will be no problem in press working.

At the end of press working, each suction cup 12 moves into the working space 23 along the handling bar 11 as shown by the solid line in FIG. 12, and are sequentially conveyed.

In the above embodiment, each suction cup 1 is
Although the structure for moving each suction cup 12 is not limited to this, for example, a cylinder may be used to move each suction cup 12.

C. Effects of the Invention As described above, according to the present invention, during plastic working, the holding member is moved along the handling bar to be retracted outside the working space of the lower mold and the upper mold, so that the It is possible to reduce the size of the plastic processing machine by shortening the interval between the two.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is an overall longitudinal sectional side view, FIG. 2 is a partially enlarged view of FIG. 1, and FIG. 3 is a sectional view taken along the line -- of FIG. 2. _DESCRIPTION OF SYMBOLS 1...Press machine as a plastic processing machine, 2...Conveyance direction, _31-33 ...Lower die, _{41-43 ...} Upper die,
DESCRIPTION OF SYMBOLS 11... Handling bar, 12... Suction cup as a holding member, 23... Working space, S1-S3...
Processing station, W...work.

Claims (1)

[Claims] 1 A plurality of processing stations S1 to S3 set at intervals along the transport direction 2 of the workpiece W,
A plastic processing machine is provided with lower dies 3 ₁ to 3 ₃ and upper dies 4 ₁ to 4 ₃ for cooperatively plastic working the workpiece W, and is orthogonal to the transport direction 2 of the workpiece W. The horizontal handling bar 11 is made to stand by between the processing stations S1 to S3 during plastic working, and is moved between the adjacent processing stations S1 to S3 when the plastic working is completed, so that the horizontal handling bar 11 is moved forward and backward along the conveyance direction. A holding member 12 protruding from the handling bar 11
In the workpiece transport method in which the workpiece W is removably held and transported sequentially, the lower die 3 ₁ is moved by moving the holding member 12 along the handling bar 11 during plastic working.
3 ₃ and upper dies 4 ₁ to 4 ₃ are retracted outside the working space 23. A method for transporting a workpiece in a plastic processing machine.