JPS6324775B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes an upright interposed between the crown and the bed, a slide that can be moved up and down guided by the upright, and this slide is moved up and down by a lifting drive device. A plurality of stations are formed in an annular shape between the upper surface of the bed and the lower surface of the slide, and the workpiece processed at one station is successively transferred to the next station. This invention relates to a rotary transfer press equipped with a feed bar, and its purpose is to make the structure compact by arranging the fiber drive device at the center of the press, and to improve the assembly position accuracy of the device, which in turn improves stability. An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes an upright having a cylindrical cross section and disposed in the center of the bed 2, and a crown 3 is disposed on the upper part of the upright. Reference numeral 4 denotes a means for fixing the crown 3, upright 1, and bed 2, and is composed of a plurality of tie rods and tightening nuts extending through these 3, 1, and 2. Reference numeral 5 denotes a slide that is guided by the upright 1 so as to be movable up and down, and its shape is formed into a cylindrical shape that fits around the upright 1. Reference numeral 6 denotes an elevating drive device for the slide 5, and as shown in FIGS. A horizontal power receiving shaft 8 that can be mounted, a flywheel 9 that is mounted on the power receiving shaft 8, a clutch/brake unit 10 that is mounted on the power receiving shaft 8, and a winding hook that interlocks the main motor 7. A transmission tool 11 and a drive gear 1 attached to the power receiving shaft 8
2, and a passive gear 13 that meshes with this drive gear 12.
is attached to the main shaft 14 parallel to the power receiving shaft 8.
And, the three main pinions 1 attached to this main shaft 14
5A, 15B, 15C and these main pinions 15
A, 15B, 15C directly or idler 1
Three driven gears 17A interlockingly interlock via 6,
17B, 17C and these driven gears 17A, 17
The shafts 18A, 18B, 18C supporting the shafts B, 17C and parallel to the main shaft 14, and the driven gears 17
Eccentric wheel body 1 integrally formed with A, 17B, 17C
9A, 19B, 19C and these eccentric wheels 19
The lower ends of the connecting rods 20A, 20B, 20C are connected to the slide 5 at three positions in the circumferential direction. Reference numeral 21 denotes a bolster to which press molds for each process are attached, and the number thereof is changed depending on the number of press processes, the size of the equipment, etc. In the example, 10 stations A, B, C, D,
Set E, F, G, H, I, J, material loading station A, processing station B, C, D, E,
F, G, H, I, and product unloading stations J are used, but loading/unloading stations A and J may also be used as processing stations. Note that a material supply device 22 is provided outside the material loading station A. Reference numeral 23 denotes an annular feed bar to which fingers 24 are attached, which performs vertical movement and forward/reverse rotation around the upright 1. The elevating drive device, the forward and reverse feed drive device, and the clamp device of the finger 24 will be described below, and these devices receive power from the main shaft 14 side described above.

First, the elevating drive device will be explained with reference to FIGS. 4 and 6 to 10. A lift cam 25 is provided which is fitted onto the rotating shaft 18B and is integrated with an eccentric wheel body 19B. The middle part of a lift cam lever 27 is swingably attached to a support shaft 26 parallel to the rotating shaft 18B.
A lift cam follower 28 that can come into contact with the lift cam 25 is attached to one end of the lift cam 7. A lift connecting arm 2 is attached to the other end of the lift cam lever 27.
9 is connected to the lift connecting arm 2.
The lower end of the lift plate 3 has a through hole 30 in the center.
1 is installed. A pair of rods 33 that pass through the support member 32 attached to the upright 1 and are movable up and down are provided, the upper ends of these rods 33 are attached to the elevating plate 31, and a pair of upper and lower holding rollers 34 are attached to the lower ends, respectively. There is. A cylindrical body 36 is erected to be positioned above the press center 35,
The upper end of this cylindrical body 36 is supported by the support member 32. A movable cylindrical body 37 that can be raised and lowered while being guided by the cylindrical body 36 is provided.
The holding roller 34 supports a ring plate-shaped rail 38 attached to the outer peripheral surface of the ring plate. The movable cylinder 3
A pair of turning levers 39 are connected outwardly from 7,
The feed bar 23 is attached to these pivot levers 39 via a connecting member 40.

Next, regarding the forward/reverse feed drive device, see Figures 4 to 12.
This will be explained in the figure. A feed cam 41 fitted onto the rotating shaft 18c and integrated into the eccentric wheel body 19C.
will be provided. The middle part of an L-shaped feed cam lever 43 is swingably attached to a support shaft 42 parallel to the rotating shaft 18C, and a feed cam follower 44 that can come into contact with the feed cam 41 is attached to the upper end of this feed cam lever 43. be. The upper end of a feed connecting arm 45 is connected to the lower end of the feed cam lever 43, and the lower end of the feed connecting arm 45 is swingably attached to a horizontal shaft 46 supported on the upright 1 side with its intermediate portion. It is connected to the upper end of the L-shaped link 47. The lower end of this L-shaped link 47 is
It is connected to a ring-shaped rotating plate 51 via a ball joint 49 and a link 48. Below the movable cylinder 37, a lower movable cylinder 52 is attached to the cylinder 36.
is rotatably fitted onto the outside, and the rotary plate 51 is attached to this lower movable cylinder 52. This rotating plate 51
Pins 53 are erected at a displacement of 180 degrees from the pivot lever 39, and these pins 53 pass through the pivot lever 39 to allow the pivot lever 39 to move up and down. The link 54, which swings together with the L-shaped link 47, connects to the restraining cylinder 57 via a rod 55 and a link 56.
is linked to.

Next, the clamp device will be explained with reference to FIGS. 4 to 12. A clamp cam 58 is attached to the rotating shaft 18C. A middle portion of an L-shaped clamp cam lever 59 is swingably attached to the support shaft 42, and a clamp cam follower 60 that can come into contact with the clamp cam 58 is attached to the upper end of the clamp cam lever 59. The lower end of the clamp cam lever 59 is located on the press center 35 and is connected to the upper end of the clamp connecting rod 61. This clamp connecting rod 61 is located inside the cylindrical body 36 through the through hole 30. Notches 62 and 63 are formed in the cylindrical body 36 and the lower movable cylindrical body 52, and these notches 62 and 6
An L-shaped lever 64 is disposed through 3. L
The intermediate portion of the lever 64 is swingably supported toward the lower movable cylinder 52 via a horizontal shaft 65, and one end thereof is connected to the lower end of the clamp connecting rod 61 via a universal joint 66. . A clamping arm 67 is connected to the other end of the L-shaped lever 64, and this clamping arm 67 extends laterally and comes out of the upright 1. The tip of this clamping arm 67 is connected to a clamp connecting rod 68 disposed on the feed bar 23, so that the pushing and pulling movement of the clamping arm 67 is replaced by the circumferential movement of the clamp connecting rod 68. This circumferential movement is converted into an opening/closing movement of a pantograph mechanism 70 via a pair of gears 69, and the finger 24 is attached to the tip of this pantograph mechanism 70.

The pressing operation is carried out as follows. That is, while the slide 5 is rising, a workpiece material is fed into the station A via the material supply device 22, and a processed product is carried out from the station J. Then, as the slide 5 descends, pressing operations are performed at each station A to J and at stations B to I. During the next ascent of the slide 5, the workpieces at each station are held by the fingers 24 of the ascending feed bar 23, and are conveyed to the next station by forward rotation of the feed bar 23 at a constant angle (36 degrees). Next, the feed bar 23 is lowered to transfer the transported workpiece to each station. At this time, the materials are carried in and the workpieces are carried out again as described above. Next, the slide 5 descends to perform pressing work at each station, but at this time the feed bar 23 returns by a certain angle (36 degrees) and the finger 24 returns to its original position.

Next, the raising and lowering operation of the slide 5 will be explained. The rotation of the main electric motor 7 is transmitted to the power receiving shaft 8, and the main shaft 14 is rotated at a reduced speed via the drive gear 12 and the passive gear 13. The rotation of this main shaft 14 is caused by each main pinion 15A, 15B, 15C, driven gear 17A,
Eccentric wheel bodies 19A, 19 via 17B, 17C
B, 19C, this eccentric wheel body 19A, 19
Connecting rods 20A, 20B, 20C connected to slide 5 by rotation of B, 19C
move up and down.

Next, the raising and lowering operation of the feed bar 23 will be explained.
The rotational movement of the lift cam 25 integrated with the eccentric wheel body 19B is changed to the vertical movement of the lift connecting arm 29 via the lift cam follower 28 and the lift cam lever 27. The lifting plate 31 moves up and down together with the lift connecting arm 29, and the holding roller 34 is moved up and down via the rod 33. Since the rails 38 held by the holding rollers 34 are integral with the movable cylinder 37, the movable cylinder 37 is raised and lowered outside the cylinder 36 serving as the shaft. The movable cylindrical body 37 is raised and lowered by the rotation lever 39 and the connecting member 4.
0 to the feed bar 23, thereby raising and lowering the feed bar 23 by a predetermined amount.

Next, the turning operation of the feed bar 23 will be explained.
The rotation of the feed cam 41 integrated with the eccentric wheel body 19C is caused by the feed cam follower 44 and the feed cam lever 43.
The movement is changed to the vertical movement of the feeding connecting arm 45 via the vertical axis. The vertical movement of the feeding connecting arm 45 is converted into forward and reverse rotation of the rotary plate 51 via the L-shaped link 47 and the link 48. This rotating plate 51
The forward and reverse rotations are transmitted to the swing lever 39 via the pin 53, thereby causing the feed bar 23 to swing back and forth by a predetermined amount.

Next, the clamping operation of the fingers 24 will be explained. The rotation of the clamp cam 58, which is integrated with the rotating shaft 18C, is controlled by the clamp connecting rod 6 via a clamp cam follower 60 and a clamp cam lever 59.
It can be changed to the vertical movement of 1. The vertical movement of the clamp connecting rod 61 is converted into a push/pull movement of the clamp arm 67 via the L-shaped lever 64.
Further, both gears 6 are connected via a clamp connecting rod 68.
9, the rotational movements are changed to mutually opposite directions. The rotation of both gears 69 causes the pantograph mechanism 70 to act, thereby opening and closing the fingers 24.

The rotation of the feed bar 23 on the lift device side is allowed by the configuration in which the rails 38 of the clamping rollers 34 are clamped, and the raising and lowering of the feed bar 23 on the swing device side is allowed by the lifting and lowering configuration of the pin 53 with respect to the rotation lever 39. It is permissible. Furthermore, the rotation of the feed bar 23 on the clamp device side is achieved by attaching an L-shaped lever 64 to the lower movable cylinder 52 side and connecting the L-shaped lever 64 and the clamp connecting rod 61 with a universal joint 66. It is permissible.

As described above, according to the present invention, the main part of the drive device that raises and lowers the feed bar and rotates it forward and backward is arranged around the center of the press, so the overall structure can be made compact, and the assembly position of the device can be Accuracy can be improved, and stable driving accuracy can be maintained. Furthermore, feeding and lifting operations can be performed mechanically, increasing speed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway front view, FIG. 2 is a plan view, FIG. 3 is a cross-sectional plan view, FIG. 4 is a cross-sectional plan view of the drive unit, and FIG. The figure is a cross-sectional view of Figure 4, and Figure 6 is the same.
7 is a vertical sectional front view of the lower part, FIG. 8 is a vertical sectional side view of the same, FIG. FIG. 12 is a partially cutaway side view and a partially cutaway plan view of the lower part. 1... Upright, 2... Bed, 3... Crown, 5... Slide, 6... Lifting drive device, 7
...Main motor, 12...Drive gear, 13...Passive gear, 14...Main shaft, 15A, 15B, 15C...
...Main pinion, 17A, 17B, 17C...Driver gear, 19A, 19B, 19C...Eccentric wheel, 2
0A, 20B, 20C...Connecting rod,
23...Feed bar, 24...Finger, 2
5...Lift cam, 27...Lift cam lever,
29... Lift connection arm, 31... Elevating plate,
33... Rod, 34... Clamping roller, 35...
Press center, 37...Movable cylinder, 38...Rail,
39...Swivel lever, 41...Feed cam, 43...
...Feed cam lever, 45...Feed connection arm,
47... L-shaped link, 51... Rotating plate, 53...
Pin, 58...clamp cam, 61...clamp connecting rod, 66...universal joint, 70...pantograph mechanism.

Claims (1)

[Claims] 1. An upright is interposed between the crown and the bed, and a slide that can be moved up and down guided by the upright is arranged, and this slide is configured to be moved up and down by a lifting drive device, and the upper surface of the bed and the In a rotary transfer press, a plurality of stations are formed in an annular shape between the lower surface of the slide and an annular feed bar is provided to sequentially transfer the workpiece processed at one station to the next station. , a lift cam and a feed cam interlocked with a main electric motor are provided in the crown, a feed bar elevating drive device based on the lift cam, and a feed bar forward/reverse feed drive device based on the feed cam, and the feed bar elevating/lowering device is provided. The drive device includes a lift cam lever that swings as the lift cam rotates, an elevating plate connected to the lift cam lever via a lift connecting arm, a pair of upper and lower holding rollers attached to rods from the elevating plate, and these. It consists of a ring plate-shaped rail attached to the outer circumferential surface of a movable cylinder that is held between clamping rollers and rotatable around the center of the press, and a turning lever that is connected to the outside of the movable cylinder. The feed bar is attached to a swing lever, and the feed bar forward/reverse feed drive device includes a feed cam lever that swings due to the rotation of the feed cam, an L-shaped link connected to the feed cam lever via a feed connecting arm, and this L-shaped link. a ring-shaped rotary plate connected to the other end of the link via a ball joint and rotatable around the center of the press; and a ring-shaped rotary plate that is erected from the rotary plate and passes through the pivot lever to allow the pivot lever to move up and down. A feed bar drive device for a rotary transfer press, characterized in that it is comprised of a pin that