JPS6317539Y2 - - 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 annular station sequentially transfers the workpiece processed at one station to the next station. This invention relates to a rotary transfer press equipped with a flade bar.

Conventionally, each finger unit was driven by, for example, a pneumatic cylinder, each located on the feed bar. According to this conventional configuration,
The supply/discharge hose to the pneumatic cylinder becomes complicated, and the supply/discharge hose is affected by the feed operation of the feed bar. In addition, the clamping and unclamping operations at each station are inconsistent and unstable, and the timing of the pneumatic cylinder operations cannot be properly determined and tends to lag, making it difficult to increase the number of press strokes per minute. However, it was impossible to increase the speed.

The present invention provides a product clamp drive device for a rotary transfer press that can solve the above problems, and one embodiment thereof 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. 6 is the slide 5 elevating drive device, as shown in Figures 1, 2, and 4.
As shown in FIG. 6, there is a main motor 7 disposed on the side of the crown 3, a horizontal power receiving shaft 8 rotatably mounted on the top of the crown 3, and a flywheel mounted on the power receiving shaft 8. A wrap transmission device 1 that interlocks a wheel 9, a clutch/brake unit 10 attached to the power receiving shaft 8, and the main electric motor 7.
1 and a drive gear 12 attached to the power receiving shaft 8
A main shaft 14 is attached with a passive gear 13 that meshes with the drive gear 12 and is parallel to the power receiving shaft 8.
and 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,
Set D, 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, 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 movement around the upright 1. The elevating drive device and forward/reverse feed drive device for the feed bar 23, as well as the clamp drive device for the finger 24 will be described below, and these devices receive power from the aforementioned main shaft 14 side.

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 integrated with the 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 follower 28 . A lift connecting arm 29 is provided at the other end of the lift cam lever 27.
The upper ends of the lift connecting arms 29 are connected to each other.
A lifting plate 31 with a through hole 30 in the center is at the lower end of the
is installed. A pair of rods 33 penetrating the support member 32 attached to the upright 1 and 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, and 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.
is supported. A pair of turning levers 39 are connected to the outside of the movable cylinder 37, and the feed bar 23 is attached to these turning 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.
is 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 rotating plate 51 via a link 48, a ball joint 49, and a vertical pin 50. Below the movable cylinder 37, the lower movable cylinder 5 is attached to the cylinder 36.
2 is rotatably fitted on the outside, and this lower movable cylindrical body 52
The rotary plate 51 is attached to the rotary plate 51. This rotating plate 5
Pins 53 are erected at a displacement of 180 degrees from 1, and these pins 53 pass through the pivot lever 39 to allow the pivot lever 39 to move up and down. Said L
The link 54 that swings integrally with the shaped link 47 is
It is linked to a restraining cylinder 57 via a rod 55 and a link 56.

Next, regarding the clamp drive device, see Figures 4 to 14.
This will be explained in the figure. A clamp cam 58 is attached to the rotating shaft 18C. and L on the support shaft 42.
The middle portion of the clamp cam lever 59 is swingably attached, 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. Connecting rod 61 for this clamp
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.
An L-shaped lever 64 is disposed through 63.
The L-shaped lever 64 is swingably supported at its intermediate portion 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. There is. A clamping arm (first 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.
Therefore, this clamping arm 67 rotates around the press center 35 in synchronization with the feed bar 23 and moves forward and backward. A main shaft (shaft body) 68 is rotatably installed on the feed bar 23, and a vertical pin 70 connects the tip of a swing link 69 whose base end is fixed to the main shaft 68 and the tip of the clamp arm 67. are connected. Therefore, the main shaft 68 rotates forward and backward in conjunction with the movement of the ramp arm 67 into and out. A first support shaft 71 and a second support shaft 72 are arranged side by side next to the main shaft 68, and both support shafts 71 and 72 are rotatably supported by the feed bar 23 via bearings 73 and 74. At the upper end of the main shaft 68 is a replaceable drive gear 76 via a fixture 75.
is attached, and a replaceable passive gear 78 is attached to the upper end of the first support shaft 71 via a fixture 71. These driving gears 76 and passive gears 7
8 interlock with each other, so that the first support shaft 71 is interlocked with the main shaft 68. A first gear 79 is fixed to the lower end of the first support shaft 71, and a second gear 80 is fixed to the lower end of the second support shaft 72. Both gears 79 and 80 mesh with each other, so that both support shafts 71 and 72 are interlocked to rotate in opposite directions. The support shafts 71 and 72 and the gears 79 and 80 that interlock them form a pair, and a plurality of pairs are provided on the feed bar 23 to correspond to each of the stations A to J. Each of the first support shafts 7
Arms (second arms) 81 are successively provided from the lower part of each arm 1, and opposing ends of these adjacent arms 81 are connected via a connecting rod 82.
Therefore, the operation of the pair input from the clamping arm 67 is performed synchronously in all the remaining pairs, and at this time, the connecting rod 82
performs forward and reverse circular motion. A pandagraph mechanism 83 is attached between the above-mentioned pair of support shafts 71 and 72, and the finger 24 is attached to the tip of this pandagraph mechanism 83. Therefore, when the clamp arm 67 moves forward and backward, the main shaft 68 rotates via the swing link 69, and the rotation is transmitted to the first support shaft 71 via the drive gear 76 and the passive gear 78, and at the same time, the main shaft 68 rotates through the swing link 69. The two support shafts 72 connect to the first support shaft 71 via the first and second gears 79 and 80.
rotates in the opposite direction. And this both support shafts 7
1 and 72, the end of the proximal link of the pandagraph mechanism 83 is connected, so the pandagraph mechanism 83 expands and contracts, that is, the finger 24 attached to the free end link opens and closes. 84 indicates a restraining cylinder.

The pressing operation is carried out as follows. That is, while the slide 5 is rising, the workpiece material is carried into the station A via the material supply device 22,
Furthermore, the processed products are carried out from station J. Then, as the slide 5 descends, pressing work is performed at each of the stations A to J or 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 converted into 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 is moved up and down together with the lift connecting arm 29, and the holding roller 34 is also moved up and down via the rod 35. 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. This pushing and pulling motion of the clamping arm 67 causes the main shaft 68 to rotate in forward and reverse directions via the swing link 69, and this forward and reverse rotational motion is transmitted to the first support shaft 71 via the drive gear 76 and the passive gear 78. and the first
The support shaft 71 is rotated forward and backward. This forward and reverse rotation of the first support shaft 71 is transmitted to the second support shaft 72 via the first gear 79 and the second gear 80, and the second support shaft 72 is rotated in the opposite direction to the first support shaft 71. Rotate. The rotation of these two support shafts 71 and 72 in mutually opposite directions causes the panda graph mechanism 83 to act, and thus the finger 2
4 to open and close. Note that the first shaft linked to the main shaft 68
The rotation of the support shaft 71 is caused by the arm 81 and the connecting rod 8.
2 to the first support shafts 71 of each pair, so that the fingers 24 are opened and closed simultaneously in each pair.

Note that by replacing the drive gear 76 and the passive gear 78 and changing the tooth ratio, the finger 24
The amount of clamp rocking can be adjusted.

According to the product clamp drive device of the rotary transfer press having the configuration of the present invention, since it is mechanically coupled to the press side, the overall configuration can be simplified and made compact, and it is possible to increase the speed.
Furthermore, since the multiple clamp units are linked by arms and connecting rods, the clamping and unclamping operations at each station can always be performed in a constant manner.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; 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 of the lower part, FIG. 13 is a cross-sectional view of FIG. 12, and FIG. 14 is a cross-sectional view of the same. 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, 29... Lift connection arm, 34... Clamping roller, 35... Press center,
37...Movable cylinder, 38...Rail, 39...Swivel lever, 41...Feed cam, 45...Feed connection arm, 51...Rotary plate, 52...Lower movable cylinder, 53...Pin , 58...clamp cam, 59
... Clamp cam lever, 61 ... Clamp connection rod, 64 ... L-shaped lever, 66 ... Universal joint, 67 ... Clamp arm, 68 ... Main shaft,
71...first support shaft, 72...second support shaft, 76...
Drive gear, 78...Passive gear, 79...First gear, 80...Second gear, 81...Arm, 82...
...Connection rod, 83...Pandagraph mechanism.

Claims (1)

[Scope of utility model registration request] An upright is interposed between the crown and the bed, a slide is arranged which can be moved up and down guided by the upright, and this slide is configured to be moved up and down by a lifting drive device, so that the upper surface of the bed and the slide In a rotary transfer press, a plurality of stations are formed in an annular shape between the bottom surface of the press and an annular feed bar that sequentially transfers the workpiece processed at one station to the next station. A first arm that rotates around the center of the press in synchronization with the feed bar and moves in and out in conjunction with an electric motor provided in the crown extends from inside the upright to outside the upright. A shaft body that rotates in forward and reverse directions in conjunction with the forward and backward movements of the feed bar is attached to the feed bar, and a first support shaft that rotates in conjunction with the rotation of this shaft body and a second support shaft that is parallel to the first support shaft are connected to the feed bar. These first
A plurality of pairs of spindles and second spindles are provided on the feed bar to correspond to each station, and adjacent first spindles are connected via a second arm and a connecting rod to interlock their rotations. A product clamp drive device for a rotary transfer press, further comprising fingers attached to both supporting shafts forming a pair, and opening/closing operations of both fingers are performed by moving the first arm forward and backward.