JPH06340330A - Rotary transfer device for sheet work - Google Patents

Abstract

PURPOSE:To enable monitoring the front and rear sides of a sheet work from the side of a device, and increase its simplified position and the degree of freedom of its direction. CONSTITUTION:A rotating drum 203 is pivoted rotatably on a center shaft 201. Multiple support shafts 208 are arranged radially on the outer periphery of the rotating drum, and pivoted so that they can be rotated. A clamp means 205 is provided on the outer end of each support shaft 208. A pair of first and second fixed bevel gears connected to the center shaft 201 and opposed and first and second planetary bevel gears 209 and 210 fixed to the base end of each support shaft 208 and meshed with the first and second fixed bevel gears, respectively, are provided in the rotating drum 203. The gear ratios of the first and second fixed bevel gears to the first and second planetary bevel gears 209 and 210, are set respectively so that the twisted angle of all the clamp means 205 is constant at the input position, the twisted angle of the clamp means 205 is reversed alternately by 180 deg. at the output position and, while they are moved from the input position to the output position, one is rotated by 360 deg. and the other is rotated by 540 deg..

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swivel transfer device for a sheet-like work which sequentially grips a sheet-like work sent to a receiving position in a fixed posture and swivels it to a delivery position.

[0002]

2. Description of the Related Art As a conventional technique of this kind, for example, there is a sheet-shaped member reversing method and apparatus disclosed in Japanese Patent Laid-Open No. 63-218033.

This device is provided with radial support shafts at appropriate intervals on the outer periphery of a rotary drum that is rotatably supported, and clamping means is provided at the tip of each support shaft, and these support shafts are It is divided into two systems, a fixed side support shaft that is fixed every other turn and a movable side support shaft that is rotatably supported, and a planetary gear is fixed to the movable side support shaft at the shaft end that protrudes toward the inside of the housing. These planetary gears are meshed with a fixed gear arranged at the inner end portion of the rotating drum. The gear ratio of the fixed gear and the planetary gear is set to 1: 1 and the rotating drum is
The movable side support shaft also rotates 180 ° every time it rotates.

This device is arranged between the conveyor on the sending side and the conveyor on the receiving side, and 180 ° while holding the sheet-like member for packaging tablets or the like sent on the sending-side conveyor by the clamping means of the device. When rotating and delivering to the receiving side conveyor, the sheet-shaped member held by the clamp means of the movable side supporting shaft is twisted by 180 ° and the surface is turned upward to deliver to the receiving side conveyor, while the fixed axis side The next sheet-shaped member held by the clamp device is designed to be delivered to the receiving-side conveyor with the back surface facing upwards, whereby the sheet-like works are sequentially stacked by the stacking device arranged downstream of the receiving-side conveyor. If this is done, the irregularities due to the tablets or the like will be tied together, and thus the packaging can be made thinner.

[0005]

By the way, in the step of packaging tablets, a continuous sheet and a plastic film having a large number of recesses for accommodating the tablets are superposed on each other, and the periphery of each packaging unit is laminated by thermocompression bonding. Then, the packaging units are separated and sequentially transported, and the above-mentioned inversion transporting device or the like is used to tie up and stack the surface sides having the uneven portions, and then the final packaging process is carried out.

At this time, since each sheet-shaped member after being separated is generally transferred upward with the side of the plastic film accommodating tablets as the surface, the presence or absence of tablets and other defects on the surface side are monitored using a surveillance camera or the like. Can be determined. However, defects such as tears on the back side of the sheet and the presence or absence of engraved marks are difficult to discern in the flow of transfer, and even more difficult to discriminate when a pair of sheet-shaped members are tied together and accumulated. . Therefore, it is most preferable to determine the defects on the front and back surfaces during the reversal by the reversing device.

However, in the reversing device having the above-mentioned structure, the sheet-shaped member held by the clamp means of the movable side support shaft is twisted by 180 ° with its rear surface directed to one side. Therefore, monitoring from one side by the monitoring camera is performed. However, in order to monitor the back surface of the sheet-shaped member held by the clamp means of the fixed-side support shaft, it is necessary to install the surveillance camera in the tangential direction of the turning trajectory due to its rotation, and its installation position. There is a problem in that not only is there a large restriction on the above, but also the clamping means on the movable side before and after that interferes with each other and monitoring cannot be performed well.

The present invention has been made in view of the above circumstances, and an object thereof is to have a high degree of freedom in the monitoring direction when monitoring the front and back of a sheet-like work, and it is possible to easily monitor the presence or absence of defects. An object is to provide a swivel transfer device for a sheet-shaped work.

[0009]

In order to achieve the above object, the present invention provides a swivel transfer of a sheet-like work for sequentially gripping sheet-like works sent to a receiving position in a fixed posture and transferring them to a delivering position. The device includes a rotary drum rotatably supported by a frame, a bearing rotatably pierced through a peripheral wall of the rotary drum, and an even number arranged radially at appropriate intervals along the circumferential direction. Support shafts,
Clamping means provided at the tip of each of the support shafts for detachably gripping the sheet-like work, and a first fixed gear and a second fixed gear which are arranged coaxially with the rotary drum and whose rotation is restricted.
A fixed gear, a first planetary gear that is alternately attached to the base ends of the support shafts that project into the rotary drum, and is meshed with the first fixed gear, and a second planetary gear that is meshed with the second fixed gear. A planetary gear, and a first gear ratio between the first fixed gear and the first planetary gear is such that the sheet-like work gripped by the clamp means that is rotated therethrough is delivered from the receiving position. It is set so as to rotate nπ with n as a natural number while being transferred to the position, and the second gear ratio between the second fixed gear and the second planetary gear is the sheet shape gripped by the clamp means that is rotated therethrough. (N + 1) π while the work is transferred from the receiving position to the transferring position
It is characterized by being set to rotate.

[0010]

According to the sheet-like workpiece swivel transfer apparatus of the present invention having the above-described structure, the sheet-like workpieces sent to the receiving position in a fixed posture are sequentially gripped by the clamping means and delivered by the rotating operation of the rotary drum. It is transferred to the position. At this time, the sheet-like work held by the clamp means that is rotated by the rotation of the rotary drum via the first fixed gear and the first planetary gear is nπ (for example, 180 °) while being rotated and transferred to the delivery position. , 360 °, ...) While rotating and twisting, the sheet-like work held by the clamp means that is rotated by way of the second fixed gear and the second planetary gear is rotated and transferred to the delivery position ( n + 1)
π (for example, 360 °, 540 °, ...)
As a result, the sheet-like work is sequentially transferred to the delivery position in a state where the front and back sides thereof are alternately inverted. Therefore, since all the sheet-like workpieces will have their back surfaces turned to at least one side while being transferred from the receiving position to the delivery position, this should be done when monitoring the presence or absence of defects on the back surface and making a determination. In addition to being surely possible, the restrictions on the monitoring position and direction are relaxed, and the degree of freedom in installing the monitoring camera and the like is increased. If n is set to 2 or more, all the sheet-shaped workpieces rotate by one rotation or more, so that the restrictions on the monitoring position and the direction are further relaxed and the degree of freedom is increased.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIGS. 1 and 2 are side views showing the whole of a sheet-like workpiece swiveling and transferring apparatus according to the present invention when applied to a tying and stacking and transferring apparatus for articles.
Alignment transfer device 1 for aligning and transferring the sheet-like works w packed in five rows in an aligned state from a transport start position to a receiving position
And a sheet-like workpiece swivel transfer device according to the present invention for intermittently rotating in synchronization with the transfer operation of the transfer device 1 to receive the work w at the receiving position, and rotating and twisting it to the transfer position. 2 and a receiving position of the work w in synchronization with the swivel transfer device 2 at a delivery position which is 180 ° opposite to the receiving position in the swivel transfer device 2,
It is roughly configured by a stacking device 3 that holds the works w together and sequentially stacks them in a stacked state.

The aligning and transferring apparatus 1 includes a pair of guide rails 101 horizontally arranged along the transferring direction, a conveyor belt conveyor 102 arranged parallel to the inside of the lower part of the guide rails 101, and a guide. The lifting / lowering frame 104 arranged at the end position of the rail 101, and the work w conveyed to the end on the both sides of the guide rail 101 at the rising position of the lifting / lowering frame 104, the swivel transfer device 2
And a pair of push-out arms 105 that alternately push out toward the work holding table 110 side provided on the receiving side.

The transport start position of the aligning and transferring device 1 is continuous with a PTP packaging device (not shown), from which sheet-like works w individually cut are supplied. At this time, both ends of the sheet-like work w in the longitudinal direction are inserted into guide grooves 101a formed in the guide rail 101 along the transfer direction, and the sheet-like work w is sandwiched by the guide grooves 101a to prevent the warp of the sheet. You will be guided while being suppressed.

The conveyor 102 is connected to the intermittent rotation mechanism 103 to intermittently transfer the work w, and a plurality of pair of projections 102a for holding the work w are provided on the upper part thereof at a predetermined pitch. The work w is pushed by the projection 102a by the intermittent movement of the conveyor 102, and the lifting frame 1
It is sequentially transported to 04.

The elevating frame 104 moves up and down in synchronism with the intermittent rotation operation of the belt 102. During the feeding operation of the conveyor 102, the elevating frame 104 stops at the descending position in the same row as the guide groove 101a and holds the work w at the end of conveyance. . When the belt 102 is subsequently stopped, the work holding table 1
The operation of rising so as to face 03 is repeated.

Each push-out arm 105 is configured such that, when the elevating frame 104 is raised, a pusher 105a provided at the tip thereof is advanced in parallel with the elevating frame 104 along a locus [a] shown by an imaginary line in FIG. The operation of pressing this against the work w to push out the elevating frame 104 to the work holding table 110 side, and then drawing back an arcuate trajectory on the upper side is repeated. This operation is alternately performed by the left and right pushing arms 105, thereby reducing the load on the mechanical system with respect to the transfer speed and maintaining a good mechanical vibration balance.

The swivel transfer device 2 includes a central shaft 201 whose both ends are fixed to a pair of bearing frames 202, and a central shaft 2.
01, a cylindrical rotary drum 203 that is rotatably supported around 01, a gear 204 that is integrally provided on one end surface of the rotary drum 203, and a radial shape that is circumferentially spaced at a predetermined interval on the outer circumference of the rotary drum 203. Clamping means 2 provided in large numbers
05 and.

The gear 204 meshes with a pinion 207 provided on an output shaft of an intermittent rotation device 206 that intermittently rotates in synchronization with the transfer operation of the belt conveyor 102, and the gears are sequentially divided by the number of divisions according to the divided rotation of the intermittent rotation device 206. Rotating drum 20
3 is rotated, and the clamp means 2 is used in this embodiment.
As for 05, ten rotary drums 203 are arranged. Therefore, the rotary drum 203 repeats one cycle by rotating by 36 ° in 10 divisions.

As shown in FIGS. 3 and 4, each clamp means 205 is provided at the tip of a support shaft 208 that is radially supported by the rotary drum 203, and is a block fixed to the tip of the support shaft 208. 205a and this block 2
A fixed arm 205b fixed to one side of 05a to receive the work w and a fixed arm 205b oscillatably supported by the block 205a via a shaft 205c and arranged to face the fixed arm 205b. Work w
A pair of movable arms 205d for holding the block 20 and the block 20.
5a and the movable arm 205d, which is interposed between the spring mechanism 20 and the movable arm 205d for constantly urging the movable arm 205d in the clamp direction.
5e and a roller 205f for opening and closing which protrudes to one side of one movable arm 205d, and the fixed arm 205b is eccentrically attached to the rotation axis of the support shaft 208.

The first and second planetary bevel gears 209, 2 are respectively provided at the inner projecting ends of the supporting drums 208 of the rotary drum 203.
10 are provided alternately, and these first and second planetary bevel gears 2
09 and 210 are alternately meshed with one of a pair of opposed first and second fixed bevel gears 211 and 212 which are axially coupled to the central shaft 201, respectively. Forward and reverse depending on.

Here, in this embodiment, one support shaft 208 is provided.
Fixed bevel gear 211 of the first planetary bevel gear 209 provided in the
The first gear ratio for the rotary drum 203 is 2: 1.
360 ° when is rotated 180 ° (π) to the transfer position
In other words, nπ (here, n = 2) is adapted to rotate, and the other second planetary bevel gear 2 which is located alternately with this.
The second gear ratio of 10 to the second fixed bevel gear 212 is 3:
When the rotary drum 203 rotates 180 ° (π), it rotates 540 °, that is, (n + 1) π (here, n = 2).

FIG. 5 shows the rotation angle of the rotary drum 203 on the horizontal axis and the twisting (spinning) angles of the forward rotation side and reverse rotation side clamp arms 205 on the vertical axis. In order to observe such a position at right angles to the swivel transfer device 2 with a monitoring camera or the like, the clamp means 20 is rotated at the rotation angle position of the rotary drum 203 at the 90 ° or 270 ° twist position.
Focus on the 5 side. If there is no problem with the depth of focus, it is possible to monitor the back surface of each work w that is inverted by one camera.

One of the clamping means 205 is stopped at the work holding table 110, and a state in which the movable arm 205d is horizontally stationary with the movable arm 205d as an upper side is set as a normal position, and the origin is set as the origin, and the stacking device 3 opposed to this by 180 °. While rotating the rotary drum 203 to the delivery position on the side, the rotary drum 203 is twisted up to 360 ° and stops at the normal position with the movable arm 205d facing the upper surface in the same manner as on the receiving side.

Further, the other clamp means 205 is located at the normal position on the work holding table 103, and 180
° 360 ° to the receiving position of the opposing stacking device 3
It is twisted + 180 ° and fixed arm 205 at the delivery position.
Stop at the inside-out position with b facing up.

Here, the fixed arm 205b is the support shaft 20.
Since it is eccentric with respect to the rotation axis of No. 8, the fixed arm 2 on the side twisted by 360 ° is stopped at the transfer position.
05b and the fixed arm 205b on the side twisted by 540 ° cause a vertical displacement corresponding to twice the eccentric distance.

After the work w is delivered, the work w is further twisted in the same cycle, so that the work is again in the same posture at the receiving position.

When the work w is transferred at the receiving position and the transferring position, the clamping means 205 is opened and closed.

The opening / closing mechanism is shown in FIG. 2. A cam 213 slidably contacting the roller 205f is rotatably arranged on the left and right of the work receiving position and the handing position of the frame 202.

Each of these cams 213 is rotatably supported by the frame 202.
As shown in (a), for example, when the clamping means 205 stands by inside the work holding plate 110 in a stationary state, the cam 213 causes the roller 205f to move.
To the cam 213 at the next timing.
When the operating rod 215 connected through the
As shown in (b), the cam 213 pushes the roller 205f, and as a result, the movable arm 205d rotates about the shaft 205c as a base point to open the tip end with the fixed arm 205b, while the pusher 105a is on the side of the clamp means 205. The work w is inserted into the gap between the two by pushing the work w into the space, and when the operating rod 217 rises again at the next timing, the movable arm 105d is again pressed by the spring pressure as shown in FIG.
The work w is gripped between the fixed arm 205b and the fixed arm 205b by the holding force according to the spring pressure.

The same mechanism is adopted on both sides of the delivery position on the side of the stacking device 3 and the same operation timing is obtained, but in this case, the release operation is performed and the work w is stopped with the front or back side facing. It is separated from the clamping means 205 and is taken into the integrated device 3 side.

In the receiving position, the stacking device 3 faces the lower fixing plate 301 facing the clamp means 205 stopping at the normal position and the clamp means 205 arranged on the upper side of the fixing plate 301 and stopping at the opposite position. The upper movable plate 302, the integrated chute 303 which is vertically provided so as to communicate with the fixed plate 301, and the clamp means 2.
05 from the lower fixed plate 301 side to take in the work w, the upper take-in arm 305 to take in the work w from the clamp means 205 to the movable plate 302 side, and the lifting table 306 arranged on the bottom surface of the accumulation chute 303. And so on.

The movable plate 302, the take-up arms 304 and 305, the movable table, and other members constituting the movable portion sequentially operate in synchronization with the cam 307 and the like, and the upper and lower surfaces of the work w face each other. The stacks are stacked vertically on the stacking chute 303 side, and a stack of the work w of a predetermined stacking number is discharged from the discharge opening 303a provided on the upper part of the stacking chute 303 and used for an automatic packaging machine or the like. .

Here, guide grooves for inserting and guiding both ends of the work w are formed inside both the plate 301 and the movable plate 302, and the work w is fixed plate by the alternating operation of the intake arms 304 and 306. 301 and the movable plate 302, where they are hugged face to face.

The work w pushed into the stacking chute 303 in the tying state is pushed up by the lifting of the lifting table 306, and is lifted by the stoppers arranged on both sides of the stacking chute 303 at the lifting position. Then, the lowering of the push-up table 306 causes the lower portion of the stacking chute 303 to be in the receiving standby state again.

In the above embodiment, the work w is alternately positioned on the front and back sides every time the rotary drum rotates 180 ° from the receiving position to the delivering position.
Fixed bevel gears 211 and 212 and first and second meshing gears
Changing the delivery position by changing each gear ratio with the planetary bevel gears 209, 210 (for example, 90 ° of the rotating drum).
It is possible to deal with the change of the posture of the work w at the turning position) or the delivery position. Also, the first and second
It is also possible to arrange the fixed gears on the same side and rotate the first and second planetary gears in the same direction.

[0037]

As described above in detail with reference to the embodiments, in the swivel transfer device for sheet-like works according to the present invention, the sheet-like works sent to the receiving position in a constant posture are sequentially clamped by the clamping means. The sheet is gripped and is rotatably transferred to the delivery position by the rotating operation of the rotating drum. At this time, the sheet held by the clamp means that is rotated by the rotation of the rotating drum via the first fixed gear and the first planetary gear. The workpiece is swiveled to the delivery position while n
The sheet-like work held by the clamp means, which is rotated by π rotation and twisted while being rotated by the second fixed gear and the second planetary gear, is rotated by (n + 1) π rotation while being transferred to the delivery position. Then, the sheet-like workpieces are sequentially transferred to the delivery position in a state where the front and back of the sheets are alternately inverted, and all the sheet-like workpieces are transferred from the receiving position to the delivering position. Since the rear surface is turned to at least one side during the above, it can be easily and surely performed from the side when the presence or absence of defects on the rear surface is monitored and discriminated. The restrictions can be relaxed, and for example, when monitoring the front and back of a work with a monitoring camera, the degree of freedom of the installation position and direction can be increased.

Further, according to the present invention, since the posture of the workpiece at the delivery position can be changed by changing the gear ratio of the first and second planetary gears with respect to the first and second fixed gears, the setting can be made according to the purpose of use. There are advantages such as high design flexibility.

[Brief description of drawings]

FIG. 1 is a side view showing the overall configuration of a sheet-shaped workpiece swivel transfer device according to the present invention when applied to a work tying and stacking transfer device.

FIG. 2 is a plan view of the same.

FIG. 3 is a cross-sectional view of the swivel transfer device according to the present invention.

FIG. 4 is a side sectional view of the swivel transfer device.

FIG. 5 is a graph showing the relationship between the rotation of the swivel transfer device and the twist angle of each clamp means.

6 (a) and 6 (b) are explanatory views showing the opening / closing operation of the clamp means.

[Explanation of symbols]

 1 Alignment Conveying Device 2 Swiveling Transfer Device 3 Stacking Device 110 Work Holding Plate (Receiving Position) 201 Center Shaft 203 Rotating Drum 205 Clamping Means 208 Support Shaft 209 First Planetary Bevel Gear 210 Second Planetary Bevel Gear 211 First Fixed Bevel Gear 212 Second fixed bevel gear 301 Fixed plate (delivery position) 302 Movable plate (delivery position) w Sheet-like work

Claims (1)

[Claims] 1. A swivel transfer device for sequentially gripping a sheet-like work sent to a receiving position in a fixed posture, and swivelly transferring it to a delivery position, comprising a rotary drum rotatably supported by a frame, An even number of support shafts, which are rotatably supported through the peripheral wall of the rotary drum and radially arranged at appropriate intervals along the circumferential direction, are provided at the tips of the support shafts. Clamping means for detachably gripping the sheet-like work, first fixed gears and second fixed gears which are arranged coaxially with the rotary drum and whose rotation is restricted, and the respective support shafts projecting into the rotary drum A first planetary gear meshed with the first fixed gear and a second planetary gear meshed with the second fixed gear, the first planetary gear and the second planetary gear meshing with each other. The first gear ratio with the gear is Is set to nπ rotating the n is a natural number while the sheet workpiece held by the clamping means which is rotating via et is transferred to the delivery position from the receiving position,
The second gear ratio between the second fixed gear and the second planetary gear is (n + 1) π rotation while the sheet-like work gripped by the clamp means that is rotated therethrough is transferred from the receiving position to the delivering position. A swirl transfer device for sheet-like workpieces, which is set to: