JPH0140695B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a transfer press, and particularly to a transfer press equipped with a transfer device so as to effectively utilize the space inside and outside the press.

Conventional technology This type of press, for example,
As disclosed in Publication No. 84965, the clamp unit that clamps/unclamps and lifts/downs the feed bar is installed between the uprights like a normal press, but the feed unit that advances and returns the feed bar is installed between the uprights of the press. It is known that the feed bar is installed at a higher position than the feed bar on the blank loading side.

Problem to be Solved by the Invention In the above-mentioned press, the feed unit is installed on the blank loading side as described above, so there is no problem on the blank loading side, but the clamp unit gets in the way on the blank loading side. There is a problem in that the installation of a conveyor for carrying out blanks is restricted.

An object of the present invention is to provide a transfer press that solves the above problems.

Means for Solving the Problems In the transfer press according to the present invention, a horizontal crossbar is fixed to a pair of uprights so as to cross above the pair of feedbars, and a pair of feedbar carriers are attached to the crossbars along the longitudinal axis of the crossbars. A pinion is supported so as to be movable in the direction of the crossbar and has a horizontal rotation center perpendicular to the longitudinal direction of the crossbar. The pinion is mounted on the crossbar so as to be located between both feed bar carriers, and is engaged with the pinion from above and below. A horizontal rack is connected to both feed bar carriers, a head gear is provided integrally with the pinion in line with the pinion, and a horizontal transmission shaft having a head gear meshed with the head gear at one end is aligned with the cross bar. A pinion is provided at the other end of the transmission shaft, and a rack engaged with this pinion is provided at the lower end of the lifting rod for clamping/unclamping, while a pair of feed bars are provided in a U-shape. The feed bar receivers are respectively received by lower horizontal members, and guide rods are provided in an upright manner on the upper horizontal members of both feed bar receivers, and these are slidably fitted into receiver tubes provided on both feed bar carriers, A horizontal lifting bar is arranged between the crossbar and both feed bar supports, and both feed bar supports are movable in the length direction of the lifting bar, but are supported so as to move up and down together with the lifting bar. The lower ends of a pair of lifting and lowering rods that slidably pass through both ends of the cross bar are connected to both ends of the bar.

Operation: The vertical movement of the clamp/unclamp lifting rod is converted into rotational movement by the rack and pinion and transmitted to the transmission shaft, which rotates. When the transmission shaft rotates, the rotational motion is transmitted to the pinion by a pair of mutually meshed bevel gears, causing the pinion to rotate. A pair of racks are engaged with the pinion from above and below, so when the pinion rotates, both racks move horizontally in opposite directions. Since a pair of feed bar carriers are connected to both racks, both feed bar carriers move horizontally in opposite directions together with both racks. The horizontal axes of both feed bar carriers are transmitted to a pair of feed bar receivers via receivers and guide rods, and together with both feed bar receivers, both feed bars move horizontally in opposite directions, that is, clamp and unclamp.

Since a pair of lifting/lowering rods are connected to both ends of the lifting bar, when both lifting rods are raised or lowered, the lifting bar is raised or lowered together with the lifting rods. Both feed bar receivers on the lift bar are movable in the length direction of the lift bar, but are supported so that they move up and down together with the lift bar.When the lift bar goes up and down, both feed bar receivers move up and down along with the lift bar. The feed bar moves up and down, that is, lifts down.

The feed bars are received by the lower horizontal members of a pair of U-shaped feed bar receivers, and guide rods are provided upright on the upper horizontal members of both feed bar receivers, and these guide rods are connected to the receiver tubes provided on both feed bar carriers. Since the horizontal lifting bar is arranged so as to be slidably fitted into the crossbar and positioned between the cross bar and both feed bar receivers, the lower horizontal member and part of the vertical member of the feed bar receiver are excluded.
The mechanisms for clamping/unclamping and lifting down the feed bar as described above are all located above the feed bar.

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

The transfer press includes a press body 1 consisting of a crown 1A, a pair of uprights 1B and a bed 1C on the front and back, left and right sides, a pair of left and right feed bars 2 extending in the front and back direction between the left and right uprights 1B, and a feed bar drive device 3. A blank supply device 4 is provided. The crown 1A is provided with a pair of front and rear main drive mechanisms 5 that convert rotational motion of a drive source into reciprocating motion of a slide (both not shown). The main drive mechanism 5 includes a main gear 6 having an eccentric shaft 6a, a connecting rod 7 connecting the eccentric shaft 6a and the slide, and the like. A clutch (not shown) or the like is arranged between the front and rear main drive mechanisms 5.

The feed bar drive device 3 includes a feed bar drive mechanism 8 disposed in front of the front main drive mechanism 5 of the crown 1A, a plurality of drive shafts 9 extending downward from the crown 1A, and a blank supply device 4 at the rear of the press body 1. A feed movement mechanism 10 arranged with
and a clamp movement mechanism 11 disposed between the left and right uprights 1B of the press body 1, respectively. The feed bar 2 is caused to reciprocate in the front-rear direction by the feed movement mechanism 10 by transmitting power from the drive mechanism 8 to the feed movement mechanism 10 and the clamp movement mechanism 11 through the drive shaft 9, The clamp movement mechanism 11 moves them toward and away from each other, and also causes them to move up and down. Further, the blank supply device 4 is for sucking and lifting the blanks B stacked on the pallet 12 at the day stack position behind the feed bar 2, transporting them from the day stack position to the delivery position to the feed bar 2, and supplying the blanks to the feed bar 2. It is.

The feed bar drive mechanism 8 is shown in FIGS. 1 to 3.
Referring to the figure, feeding, clamping and elevating movement rams 13, 14, 15 and cam driven lever 1
6, 17, and 18. Each cam 13,1
Numerals 4 and 15 are plate cams whose outer circumferential surfaces serve as guide surfaces, and are attached to the camshaft 19 supported parallel to the main gear 6 in the above-mentioned order from the front. Furthermore, a cam drive shaft gear 20 and a cam 21 for reducing torque fluctuation are installed between the cam 14 for clamping motion and the cam 15 for elevating motion of the camshaft 19. Further, this cam 21 is also provided with a cam driven lever 22.

A pinion shaft 23 and a spline shaft 24 are provided parallel to the camshaft 19. pinion shaft 23
A pinion 25 meshing with the main gear 6 is fixed to one end, and a transmission gear 26 is fixed to the other end. On the other hand, an intermediate gear 27 is attached to the spline shaft 24 so as to be relatively movable in the axial direction thereof. This intermediate gear 27 is constantly meshed with the camshaft drive gear 20. The intermediate gear 27 has
A hydraulic cylinder 28 is formed integrally with this. The hydraulic cylinder 28 has its outer circumferential surface slidably received by the crown 1A in the front-rear direction, rotatably supports one end of the spline shaft 24, and slides a piston 29 attached to the one end. It is held freely. The other end of the spline shaft 24 is supported on the crown 1A side so as to be rotatable but immovable in the axial direction. When pressure oil is alternately supplied to the front and rear chambers partitioned by the piston 29 of the hydraulic cylinder 28, the hydraulic cylinder 28 itself moves back and forth, and accordingly, the intermediate gear 2
7 moves back and forth. As shown in FIG. 2, when the intermediate gear 27 is in the backward position, the intermediate gear 27
The transmission gear 26 is not meshed. When the intermediate gear 27 is advanced from this state, both gears 26,
27 mesh with each other, and the power of the main gear 6 is transmitted to the camshaft 19. In this way, by moving the intermediate gear 27 forward and backward by the hydraulic cylinder 28, the power of the main gear 6 is applied to the camshaft 19 on and off.

As shown in FIG. 3, the cam driven levers 17, 18, and 22 for clamping motion, lifting motion, and torque fluctuation reduction, excluding the cam driven lever 16 for feeding motion, are all driven by horizontal shafts 30, 31, and 32 at their intermediate portions. A supported fork with one cam at each end.
Guide rollers 33, 3 in contact with 4, 15, 21
4 and 35 are attached respectively. The other end of the torque fluctuation reducing cam driven lever 22 is connected to a torque fluctuation reducing air cylinder 36 that acts to constantly press the guide roller 35 against the cam 21 . The upper ends of vertical rods 37, 38 are connected to the other ends of the cam driven levers 17, 18 for clamping and elevating movement, respectively. The lower end of each vertical rod 37, 38 is connected to a lever 39,
40 and connecting members 41, 42, equalizer shafts 43, 4 for clamping and elevating movement.
It is connected to 4. Each equalizer shaft 4
3 and 44, as shown in FIG. 2, those for clamping movement within the crown 1A extend on the right side of the main gear 6, and those for elevating movement extend on the left side of the main gear 6 in parallel and horizontally with each other. The front ends of the equalizer shafts 43 and 44 protrude forward of the upright 1A, and a clamp and air cylinders 45 and 46 for restraining the vertical movement are connected to the front ends of the equalizer shafts 43 and 44, respectively.

The cam driven lever 16 for feeding movement has a guide roller 47 in the middle, and is a pair of upper and lower levers arranged so that the guide roller 47 sandwiches the cam 13 from above and below, and one end is attached to the horizontal shaft 48 on the upright 1A side. The other ends of the cylinders are supported by a restraining air cylinder 49 and connected to each other by a restraining air cylinder 49.

The drive shaft 9 includes lifting rods 50, 51, 52 for feeding, clamping, and lifting movements. The upper end of the feed movement lifting rod 50 is connected to the middle part of the lower feed movement cam driven lever 16, as shown in FIG. 3, and extends downward through the middle part between the left and right uprights 1B at the rear. Lifting rod 51 for clamp movement
are paired in the front and rear, and their upper ends are respectively connected to both ends of the clamp equalizer shaft 43 via levers 53, and extend downward between the left and right uprights 1B at the front and rear parts along the right upright 1B. . The elevating rods 52 for elevating and lowering movement are paired in front and rear and left and right. The upper ends of the left and right pairs of lifting rods 52 are attached to the tips of left and right pairs of forward-facing arms 55, which are attached to horizontal communication shafts 54 extending in the left and right direction directly below the crown 1A at respective positions in the front and rear directions. There is. Each horizontal communication shaft 54 also has one rearward facing arm 5.
6 are attached, and each of these arms 56 is connected to both ends of the equalizer shaft 44 for vertical movement via a connecting rod 57 and a lever 58. The elevating rods 52 for elevating movement extend downward between the left and right uprights 1B at the front and rear portions, respectively, along the left and right uprights 1B. By rotating the camshaft 19, each lifting rod 50,5
1 and 52 are raised and lowered at required timings. In this elevating movement, the elevating rod 51 for feeding movement
The front and rear pairs of the lift rods 52 move up and down at the same time, and the front and rear and left and right pairs of the lifting rods 52 move up and down at the same time.

4 to 6 show details of the feed movement mechanism 10. Also shown in the figure is a blank supply device 4.

The rear upright 1B is equipped with a substantially L-shaped box frame 60 when viewed from the side so as to be passed between the left and right uprights 1B. A carrier drive lever 6 is attached to the upper part of this frame 60 by a horizontal shaft 61.
2 is supported (see Figure 1). At the upper end of the carrier drive lever 62 is a lifting rod 50 for feeding movement.
The lower ends of are connected. A pair of left and right guide rails 63 extending in the length direction of the feed bar 2 are provided at the lower end of the box-shaped frame 60, and a feed bar carrier 64 for feeding movement, which is a rectangular hollow body long in the left and right direction, is attached to the guide rails 63. is movably supported via a guide member 65. The feed bar carrier 64 and the lower end of the carrier drive lever 62 are connected by a link 66. Guide grooves 67 having a U-shaped cross section and extending in the left-right direction are provided on the lower surface of the feed bar carrier 64 to face each other, and a pair of left and right feed members 68 are movably supported in these guide grooves 67. There is. The feeding member 68 has a cylindrical portion 69 that protrudes vertically downward, and this cylindrical portion 69 is inserted through a receiving tube 70 attached to the end of the feed bar 2 so as to be slidable up and down.

When the feed movement lifting rod 50 moves up and down, the carrier drive lever 62 swings around the horizontal shaft 61, and the feed bar carrier 64 is moved together with the feed member 68 via the link 66.
The feed bar 32 is reciprocated along its length.

Further, on the lower surface of the box-shaped frame 60, guide rails 71 and fixing racks 72, each having a substantially L-shaped cross section and extending in the front-rear direction, are provided in pairs on the left and right sides, respectively. The fixing rack 72 is fixed to the box-shaped frame 60 by a mounting bracket 73 with its tooth surface facing downward. A blank carrier 75 is movably supported on the guide rail 71 via rollers 74. Further, a first blank lifting air cylinder 76 is supported vertically downward at the top of the feed bar carrier 64 at the center in the left-right direction. The rod 77 of this cylinder 76 has an elevating plate 7.
8 is installed. Furthermore, a pair of front and rear pinion shafts 79, 80 are attached to both left and right sides of the cylinder 76 inside the feed bar carrier 64. A driven pinion 81 that meshes with the fixing rack 72 is attached to the front pinion shaft 79, and a first transmission gear 82 is also attached. A second transmission gear 83 that meshes with the first transmission gear 82 is attached to the rear pinion shaft 80, and a blank carrier drive pinion 84 is attached to the rear pinion shaft 80.
is installed.

The blank carrier 75 includes a rectangular frame 85,
A second blank elevating air cylinder 86 supported vertically downward in the center of the frame 85; an elevating beam 89 connected to the rod 87 of the air cylinder 86 and having a suction member 88;
An arm 90 is formed of a vertical part 90a and a horizontal part 90b, which are supported so as to hang downward from the top and protrude forward, and are formed into a substantially L shape when viewed from the side. The movable rack 93 is supported in a cantilevered manner so as to protrude, and is movable up and down via a movable rack 93 that engages with the blank carrier drive pinion 84 and a guide rod 91 that is inserted into the tip of the horizontal portion 90b so as to be able to move up and down. , and an elevating member 96 having an adsorption member 92. The upper end of the guide rod 91 is provided with an elevating plate 7.
A guide roller 94 is attached to the guide roller 8 and is supported so as to be movable in the front-back direction. Note that a multiple blank detector 95 is attached to the horizontal portion 90b of the arm 90.

When the feed bar carrier 64 is moved as described above, the front and rear pinion shafts 79 and 80 move accordingly, and the fixing rack 7
The front pinion shaft 79 is rotated by the driven pinion 81 meshed with the front pinion 81 . The rotation of this pinion shaft 79 is caused by the rotation of the first and second transmission gears 82 and 8.
3 to the rear pinion shaft 80, and the blank carrier drive pinion 84 rotates. This causes the movable rack to be moved by the distance moved by the blank carrier drive pinion 84 together with the feedbar carrier 64, and
It is moved a distance corresponding to the rotation of the blank carrier drive pinion 84. As shown in FIG. 4, the moving distance of the feed bar carrier 64 corresponding to the forward and backward stroke distance of the feed bar 2 is defined as l, and the distance that the movable rack 94 is moved by the rotation of the blank carrier drive pinion 84 is defined as l'. Then, the moving distance of the blank carrier 75 is L=l+l'. In this way, by appropriately setting the gear ratios of the pinions 81, 84 of the front and rear pinion shafts 79, 80 and the transmission gears 82, 83, the blank conveyance distance L of the blank carrier 75 can be arbitrarily set. Further, this distance L corresponds to the distance between the front and rear suction members 88 and 92.

The blank B at the stack position P is carried to the idle station _I1 by the suction member 88 of the second blank lifting cylinder 86. Further, the blank B at the idle station I ₁ is carried to the delivery position I ₀ to the feed bar 2 by the suction member 82 of the first blank lifting cylinder 76 and delivered to the feed bar 2 .

7 to 9 show details of the clamp movement mechanism 11.

Lifting rod 51 for clamp movement extending from above
A cross bar 1 having a substantially U-shaped cross section extends above the feed bar 2 between the left and right uprights 1B in front of the
00 is set. Further, a rack 101 is formed at the lower end of the lifting rod 51 for clamp movement. At the rear of the crossbar 100, there is a first
A clamp motion transmission shaft 104 and a second clamp motion transmission shaft 105 that is perpendicular to the clamp motion transmission shaft 104 and inserted back and forth through the center portion of the cross bar 100 in the left-right direction are provided. A first pinion 10 is engaged with the rack 101 at one end of the first clamp motion transmission shaft 104.
6 is fixed, and a first bevel gear 107 is fixed to the other end. A second head gear 108 meshing with the first head gear 107 is fixed to one end of the second clamp motion transmission shaft 102, and a second pinion 109 is fixed to the other end. Guide rails 110, 111 extending in the left-right direction are provided on both the upper and lower sides of the cross bar 100, and along these guide rails 110, 111, a pair of left and right feed bar carriers 112 for clamping motion, each having a substantially rectangular cross section, are installed. Supported in a movable manner. The left and right clamp motion feed bar carriers 112 are moved toward each other by restraining air cylinders 113.
is energized by. A pair of parallel racks 114 extending in the left-right direction and facing in opposite directions are attached to each carrier 112 so as to engage with the second pinion 109 from above and below.

Left and right lifting rods 52 for lifting and lowering movements extend from above through both ends of the cross bar 100. A lift bar 115 is fixed to the lower ends of these lift bars 52 in parallel with the cross bar 100, bridging the left and right sides thereof. A pair of front and rear guide rails 116 extending in the left-right direction are provided on both the front and rear surfaces of the lift bar 115. This guide rail 11
A pair of left and right opposed feed bar receivers 117 having a generally U-shaped cross section are movably supported at 6 . Each feed bar receiver 117 has two vertically protruding upwards.
The lifting guide rods 118 pass through receivers 119 fixed to both the front and rear surfaces of the feed bar carrier 112 so as to be able to move up and down, and when the guide rails 116 are sandwiched from above and below, 120 can be seen. have. Furthermore, the feed bar receiver 117 has a horizontal guide plate 121 attached to both left and right lower ends of the feed bar 2, which is movably held between the horizontal guide plates 121 from above and below and from the left and right. The feed bar 2 moves vertically and horizontally together with the feed bar receiver 110, and
It is supported by a feed bar receiver 117 so as to be movable in the front and rear direction.

When the lifting rod 51 for clamp movement moves up and down, the first pinion 106 engaged with the rack 101 rotates the first clamp movement transmission shaft 104, and this rotation is transmitted through the first and second shade gears 107, 108. It is transmitted to the second clamp motion transmission shaft 105. When the second clamp motion transmission shaft 105 rotates, the pair of left and right racks 114 engaged with the second pinion 109 move in opposite directions, and accordingly, the clamp motion feed bar carriers 112 approach each other. Do a separation exercise. This approaching/separating movement of the carrier 112 is transmitted to the feed bar receiver 117 by the receiver tube 119 and the lifting guide rod 118. As a result, the feed bars 2 move toward and away from each other.

When the elevating bar 52 for elevating movement moves up and down, the elevating bar 115 moves up and down accordingly. Lifting bar 1
When 15 goes up and down, the up and down movement causes the up and down bar 115
The signal is transmitted to the feed bar receiver 117 by the guide rail 116 and the rollers 120 of the feed bar receiver 117 that sandwich the guide rail 116 from above and below. As a result, the feed bar 2 moves up and down.

Effects of the Invention According to the present invention, by raising and lowering two types of lifting rods, a pair of feed bars can be clamped and
In addition to being able to unclamp and lift down the feed bar, all of the mechanisms for clamping, unclamping, and lifting down the feed bar as described above, except for the lower horizontal member and part of the vertical member of the feed bar receiver, are located above the feed bar. Since the feed bar is located at the bottom of the feed bar, the space below the feed bar can be used effectively, and it becomes easy to install a conveyor for carrying out blanks, etc.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view including a partially fragmented cross section of the transfer press;
Figure 2 is a plan view of the same, Figure 3 is a front view of the drive mechanism,
4 is a side view of the feed movement mechanism and the flank supply device, FIG. 5 is a front view including a sectional view taken along the line - in FIG. 4, and FIG. 6 is a sectional view taken along the line - in FIG. FIG. 7 is a front view of the clamp movement mechanism including a partially fractured cross section, FIG. 8 is a plan view thereof, and FIG. 9 is a sectional view taken along the - line in FIG. 7. 1B... Upright, 2... Feed bar, 5
1,52...Elevating bar, 100...Cross bar, 1
01...Rack, 104...Transmission shaft, 106...
Pinion, 107, 108...Shade gear, 109...
...pinion, 112...feedback carrier,
114...Rack, 115...Lifting bar, 117
...Feed bar receiver, 118...Guide rod, 11
9... Receiver.

Claims (1)

[Claims] 1 A horizontal cross bar 100 is attached to the pair of uprights 1B so as to cross above the pair of feed bars 2.
A pair of feed bar carriers 112 are supported on the cross bar 100 so as to be movable in the longitudinal direction of the cross bar 100.
The first one has a horizontal rotation center perpendicular to the longitudinal direction of
pinion 109, both feedbar carriers 11
A pair of horizontal racks 114 are attached to the cross bar 100 so as to be located between the two feed bar carriers 112, and are engaged with the pinion 109 from above and below, respectively.
A cap gear 108 is provided integrally with the cap gear 108, and the cap gear 1 is meshed with the cap gear 108.
07 at one end is attached to the crossbar 100 so as to line up with this, and a pinion 106 is provided at the other end of the transmission shaft 104, and a rack 101 meshed with this pinion 106.
are provided at the lower end of the clamp/unclamp lifting rod 51, and on the other hand, the pair of feed bars 2 are respectively received by the lower horizontal members of the pair of U-shaped feed bar receivers 117, and the upper horizontal members of both feed bar receivers 117 are Guide rods 118 are provided in an upright manner, and these are slidably fitted into receiver tubes 119 provided on both feed bar carriers 112, and the cross bar 100 and both feed bar receivers 11
A horizontal lift bar 115 is disposed between 7 and 7, and both feed bar receivers 117 are movable in the length direction of the lift bar 115 and supported so as to move up and down together with the lift bar 115. The lower ends of a pair of lifting and lowering rods 52 that slidably pass through both ends of the cross bar 100 are connected to both ends of the transfer press 115, respectively.