JPH05185164A - Transfer device - Google Patents

Abstract

PURPOSE:To reciprocate and elevate/lower the transfer bar and the elevating/ lowering frame at the respective prescribed timing with the single driving source without troublesome synchronized controlling and to realize the cost down by simplifying the structure of this device including the controlling system. CONSTITUTION:A reciprocating cam 12a of a transfer bar 6 and an elevating/ lowering cam 13a of an elevating/lowering frame 9 which are driven by rotating with a single driving source 10 are provided so as to be connected in the prescribed phase relation, and the work W is intermittently fed by reciprocating and elevating/lowering the transfer bar 6 and the elevating/lowering frame 9 at respective prescribed timing by the 1st linking member 14 linking to the reciprocating cam 12a and the 2nd linking member 16 linking to the elevating/ lowering cam 13a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for holding a plurality of works at regular intervals and intermittently sending them.

[0002]

2. Description of the Related Art Conventionally, an apparatus of this type has a transfer bar and an elevating frame for reciprocally supporting the transfer bar, and a reciprocating drive source for reciprocating the transfer bar and an elevating frame for elevating the elevating frame. A plurality of holding members attached to the transfer bar, the drive source being provided, the reciprocating drive source and the elevating drive source being synchronously controlled to reciprocate the transfer bar and elevate the elevating frame. It is common to intermittently send the work of.

[0003]

In the above-mentioned conventional apparatus, separate drive sources for reciprocating movement and for raising and lowering are required, and since synchronous control of these drive sources is required, the apparatus becomes complicated and expensive. An object of the present invention is to provide a transfer device which has a simple structure and is inexpensive in view of the above points.

[0004]

[Means for Solving the Problems] In order to achieve the above object,
In the device of the present invention, in a transfer device having a transfer bar to which a plurality of holding members for holding a plurality of works at fixed intervals are attached, and an elevating frame that supports the transfer bar so that the transfer bar can reciprocate, a single drive source rotationally drives A reciprocating cam and an ascending / descending cam, and a first interlocking member that reciprocally moves the transfer bar in conjunction with the reciprocating cam,
A second interlocking member for raising and lowering the elevating frame in association with the elevating cam is provided.

[0005]

The rotation of the reciprocating cam causes the transfer bar to reciprocate through the first interlocking member, while the rotation of the elevating cam causes the elevating frame to move up and down through the second interlocking member.
Therefore, if the reciprocating cam and the elevating cam are connected in a predetermined phase relationship, the transfer bar and the elevating cam can be reciprocated at a predetermined timing with a single drive source without complicated synchronization control. Work can be intermittently fed by moving and raising and lowering.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a transfer type press apparatus equipped with the apparatus of the present invention, in which first to third lower dies 3 ₁ , 3 ₂ and 3 ₃ are arranged at regular intervals on the bolster 2 side. The transfer device 1 arranged in one direction sequentially transfers the work W to the first position.
The lower die 3 ₁ was intermittently fed to the third lower die 3 ₃ for press working, and the worked work W was delivered to the delivery conveyor 4 arranged in front of the third lower die 3 ₃ .

The transfer device 1 includes first to third holding members 5 ₁ , which are provided with a plurality of suction cups 5 a for sucking the work W.
A transfer bar 6 in which 5 ₂ and 5 ₃ are mounted at the same pitch as the arrangement pitch of the lower molds 3 ₁ , 3 ₂ and 3 ₃ and a machine on the side of the bolster 2 that supports the transfer bar 6 so as to be reciprocally movable. The transfer bar 6 is provided with a vertically movable elevating frame 9 whose both ends are guided by guide rails 8 standing on the table 7.
The work W is intermittently fed by the reciprocating movement of the work and the lifting and lowering of the lifting frame 9.

A rotary shaft 11 which is rotated by a drive source 10 composed of a motor is vertically installed on the machine base 7. A first rotary body 12 is provided at an intermediate portion of the rotary shaft 11 and a pair of first rotary bodies 12 is provided at both ends thereof. Two rotating bodies 13 and 13 were fixed. As shown in FIGS. 1 and 3, a groove-shaped reciprocating cam 12a is formed on the peripheral surface of the first rotating body 12, and the first interlocking member 14 that reciprocates the transfer bar 7 in conjunction with the cam 12a. Was established. The first interlocking member 14 is composed of an arm-shaped member pivotally supported by a bracket 15 provided at an intermediate portion of the machine base 7 by a shaft 14a at one end thereof so as to be swingable in a reciprocating direction. The 1 interlocking member 14 is horizontally installed in the space above the first rotating body 12 in a state of being engaged with the laterally long slot 6a formed in the bracket at the intermediate portion of the transfer bar 6 by the engaging pin 14b at the other end. Then, the engaging element 14c protruding from the lower surface of the intermediate portion is engaged with the reciprocating cam 12a. Thus, according to the rotation of the first rotating body 12, the first interlocking member 14 swings about the shaft 14a at one end in association with the reciprocating cam 12a, and the transfer bar 7 reciprocates with this swing. To be done.

Further, as shown in FIGS. 2 and 3, a groove-shaped reciprocating cam 13 is formed on one side surface of the pair of second rotating bodies 13, 13.
a, 13a are formed, and a pair of second interlocking members 1 for raising and lowering the elevating frame 9 in conjunction with the cams 13a, 13a.
6 and 16 are provided. The second interlocking members 16 and 16 are arm-shaped members that are pivotally supported by brackets 17 and 17 provided at both ends of the machine base 7 by shafts 16a and 16a at their one ends so as to be swingable in the vertical direction. And the second interlocking member 1
6 and 16 are engaged with the second rotary bodies 13 and 13 in a state of being engaged with laterally long slots 9a and 9a formed in brackets at both ends of the elevating frame 9 by engaging pins 16b and 16b at the other end. The engaging cams 16a, 16c are provided laterally so as to oppose the formed lifting cams 13a, 13a, and the engaging members 16c, 16c projecting from the intermediate portion of the side surface facing the cams 13a, 13a are provided for the lifting cams 13a, 1a.
3a was engaged. Thus, according to the rotation of the second rotary bodies 13, 13, the second cams 13a, 13a are interlocked with the second rotary bodies 13, 13a.
The interlocking members 16, 16 swing around the shafts 16a, 16a at one end, and the lifting frame 9 is raised and lowered with this swing.

Next, the operation of the apparatus will be described. When performing press working by lowering the upper die (not shown), the transfer bar 6
Moves to a standby position such that each holding member 5 ₁ , 5 ₂ , 5 ₃ is positioned in front of each lower mold 3 ₁ , 3 ₂ , 3 ₃ , and stands by, and each holding member 5 ₁ , 5 ₂ , The interference between 5 ₃ and the upper mold is prevented. When the upper die is lifted after the press working, the drive source 10 rotates the rotating shaft 11, and first the reciprocating cam 12a causes the transfer bar 6 to return from the standby position via the first interlocking member 14 and each holding member 5 ₁ , 5 ₂ and 5 ₃ are lower molds 3 ₁ ,
It is moved to a position directly above 3 ₂ and 3 ₃ and then the lifting cam 13a.
As a result, the elevating frame 9 is lowered via the second interlocking member 16,
After the work W on the lower dies 3 ₁ , 3 ₂ , 3 ₃ is suction-held by the holding members 5 ₁ , 5 ₂ , 5 ₃ , the elevating frame 9 is raised. next,
The transfer bar 6 is reciprocated by the reciprocating cam 12a via the first interlocking member 14, and the first and second holding members 5 are moved.
₁ , 5 ₂ are moved directly above the second and third lower molds 3 ₁ , 3 ₂ and the third holding member 5 ₃ is moved onto the payout conveyor 4. After that, the elevating cam 13a lowers the elevating frame 9 again via the second interlocking member 16, and the work W sucked and held by each holding member 5 ₁ , 5 ₂ , 5 ₃ is held by the second and third lower molds 3. After being placed on ₁ , 3 ₂ and the payout conveyor 4, the elevating frame 9 is raised.
After that, the transfer bar 6 is returned to the standby position by the reciprocating cam 12a via the first interlocking member 14. Prior to this forward movement, the work W is set on the first lower die 3 ₁ by another transfer machine or manually, and after the backward movement, the upper die is lowered to perform press working.

FIG. 4 shows another embodiment, in which the reciprocating cam 18a of the transfer bar 6 is provided on the peripheral surface of a single rotating body 18 and the elevating and lowering cams 18b, 18 of the elevating frame 9 are provided on both side surfaces.
b. In this case, it is possible to avoid the trouble of connecting the reciprocating cam and the elevating cam in a predetermined phase relationship, and prevent the reciprocating motion of the transfer bar and the deviation of the synchronism between the elevating frame and the elevating frame due to a mistaken mounting of the rotating body. it can.

In the above embodiment, the reciprocating cam 12a and the lifting cam 13a are provided coaxially. However, the reciprocating cam 12a is provided on one of the two rotary shafts parallel to the reciprocating direction of the transfer bar 6. An elevating cam 13a is provided on the other side, and is rotated by the rotary drive source of either one of the two rotary shafts.
The reciprocating cam 12a and the elevating cam 13a are rotated by rotating the other rotating shaft via a transmission means such as a chain or a belt that is hung between the rotating shafts of the book to reciprocate the transfer bar 6 and ascend and descend. The frame 9 may be moved up and down.

[0013]

As is apparent from the above description, according to the present invention, the single drive source reciprocates and ascends and descends the transfer bar and the elevating frame at predetermined timings without performing troublesome synchronous control. Therefore, the structure of the device including the control system can be simplified and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a transfer device according to an example of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view of the transfer device shown in FIG.

FIG. 4 is a perspective view of a main part of another embodiment.

[Explanation of symbols]

1 Transfer Device 5 ₁ , 5 ₂ , 5 ₃ Holding Device 6 Transfer Bar 9 Elevating Frame 12a Reciprocating Cam 13a Elevating Cam 14 First Interlocking Member 16 Second
Interlocking member W work

Claims (1)

[Claims] 1. A transfer device having a transfer bar to which a plurality of holding members for holding a plurality of works at regular intervals are attached, and an elevating frame for supporting the transfer bar so that the transfer bar can reciprocate. A first interlocking member for providing a driven reciprocating cam and an ascending / descending cam, and reciprocally moving the transfer bar in conjunction with the reciprocating cam;
A transfer device comprising: a second interlocking member for raising and lowering an elevating frame in conjunction with an elevating cam.