JPH058034Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention allows a workpiece transported by a lift-and-carry method to be delivered laterally using a simple link mechanism. This invention relates to a workpiece dispensing device.

(Prior Art) Conventionally, in a machining device in which machining spots are lined up in a row, such as a vertical multi-axis machining facility 1, a lift-and-carry method is used to transport the workpiece. In this case, as shown in Figs. 6 and 7, the workpiece 2 is processed at processing spots A, B, and C, transported one after another by the conveyor 3, and taken out at spot D. Become. However, this is far away from the operator 4 and has poor work efficiency, so conventionally, in many cases, a chute 5 is attached to guide the workpiece to the position D' and then unload it. Further, in order to pay out the workpiece 2 to the position E, a payout device using a dedicated actuator or the like (not shown) is installed to carry out the payout from the spot D to the position E.

(Problems to be solved by the invention) In such a workpiece unloading device, the system using the chute 5 has a simplified structure and takes less time to unload the machined workpiece, but the workpiece conveyance direction of the equipment is shorter. The length of the workpiece is increased by a shown in FIGS. 6 and 7, the space for the equipment increases, and the walking distance of the worker 4 is extended because he has to go there to pick up the workpiece. In addition, when dispensing the workpiece to position E using an actuator or the like, the structure is complicated, and since the workpiece must be dispensed by operating the actuator after processing, dispensing the workpiece takes time. Since dedicated equipment is required, the equipment cost increases, and since additional actuators and the like are installed, installation space is required, so the space of the entire equipment becomes as large as a system using a chute. The present invention has been made to provide a simple workpiece dispensing device that shortens the dispensing time, has a simple structure, and does not take up a large installation space.

(Means for Solving the Problems) The present invention, as a means for solving the above problems, meshes a rack provided on the lift spindle with a pinion provided on the drive shaft, so that the upper end of the lift spindle Lift-and-carry type machining in which a workpiece holder is raised and lowered from a lowered position, then moved forward in the transport direction, then lowered, and then retreated to its original lowered position. In the object conveyance device, a pinion is provided on the drive shaft, and a payout spindle provided with a rack that engages with the pinion is provided on the opposite side of the lift spindle across the drive shaft, and extends to the workpiece pedestal. , and a workpiece unloading rod is swingably supported at the upper end of the unloading spindle in the lowered position of the workpiece holder, and the upper end of the rod is supported at a certain distance from the support part of the workpiece unloading rod. The rods are rotatably connected to each other, and a member is provided at the lower part of the rod to regulate the vertical stroke of the rod.

(Function) Since the present invention is constructed as described above, it has the following functions. That is, a pinion is provided on the drive shaft of a lift-and-carry type workpiece transfer device, and a rack that engages with the pinion is provided on the opposite side of the drive shaft from the lift spindle of the lift-and-carry type workpiece transfer device. Since the lift spindle and the payout spindle are arranged in the opposite direction, the lifting and lowering operations of the lift spindle and the payout spindle are opposite to each other, and since these lifting and lowering operations are performed by the same drive shaft, the reverse lifting and lowering operations are quickly synchronized. will be carried out.

The workpiece dispensing rod extends to a workpiece pedestal of the lift-and-carry type workpiece transfer device, and the workpiece dispensing rod is swingably supported at the upper end of the dispensing spindle at the lowered position. Therefore, the lifting and lowering movements between the workpiece holder and the workpiece unloading rod quickly reverse, and since the workpiece unloading rod is disposed at the lowered position of the workpiece holder, the machining At the same time as the object receiving table descends, the workpiece discharging rod rises and the workpiece is quickly delivered to the workpiece discharging rod.

The upper end of the rod is rotatably connected at a certain distance from the support part of the workpiece delivery rod, and a member for regulating the lifting stroke is provided at the bottom of the rod, so that the workpiece can be transferred easily. During the upward movement of the workpiece discharging rod, the vertical stroke of the workpiece discharging rod is regulated, the workpiece discharging rod is tilted, and the workpiece is discharged.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a lift-and-carry type conveyance device 11 is provided with a lift spindle 12 equipped with a rack 13 that engages with a pinion provided on a drive shaft 14, and as shown in FIG. Rack 17 and drive shaft 1 fixed to
The rod of the cylinder 16 is moved forward and backward by meshing with a pinion 15 provided at the cylinder 4, thereby causing the drive shaft 14 to rotate forward and backward, thereby raising and lowering the lift spindle 12. By the vertical movement of the lift spindle 12, the workpiece holder 18 is moved up and down, and the workpiece holder 18 is also moved in a direction perpendicular to the plane of FIG. That is, the workpiece holder 18 first receives the conveyed workpiece 10 in the lowered position, is then raised by the lift spindle 12, and then moves forward toward the plane of the paper in FIG. Next, the lift spindle 12
It is designed to be lowered by the lowering of , and then retreated to the original lowered position. And the workpiece pedestal 18
The workpiece 10 placed on the machine is machined as the workpiece pedestal 18 rises and moves forward, and the processed workpiece 10 is discharged as the workpiece pedestal 18 descends.

1 and 4, the payout spindle 20 is provided with a rack 30, and the drive shaft 14 is provided with a new pinion that meshes with this rack 30. A payout spindle 20 is disposed on the opposite side of the lift spindle 12 so as to sandwich the drive shaft 14 therebetween. As shown in FIGS. 1 and 5, the workpiece discharging rod 2 extends to the position of the workpiece holder 18.
1 are provided in parallel, and the positional relationship with the workpiece holder 18 is arranged so that they do not interfere with each other at the position where the workpiece holder 18 advances and descends.

The workpiece discharging rod 21 is integrally provided with a widened portion 22, and the upper end of the discharging spindle 20 is connected to a pin hole 22a formed in the widened portion 22 by a horizontal pin 20a. This horizontal pin 22
The upper end of the rod 24 is connected with a pin to a hole 23 drilled in the widened part 22 at a predetermined distance from the connecting part a, and the shoulder part 2 is connected to the lower part of the rod 24.
7 is formed and becomes thinner, and is inserted into a hole 25a made in the bracket 25. 26 is a stopper nut screwed onto the lower end of the rod 24. Or, instead of this nut 26,
As shown in FIG. 3, the bracket 25 may be provided with a pin 29, and the elongated hole 28 formed at the lower end of the rod 24 may be fitted into this pin 29 to limit the stroke l of the rod 24. Further, as shown in FIG. 1, when the lift spindle 12 is lowered and the workpiece holder 18 is lowered, the unloading spindle 20 is also at the lowered position, and the height position of the workpiece unloading rod 21 at this time is The workpiece holder 18 is 1
When the workpiece holder 18 is raised to the 8' position,
It is almost the same height.

The operation of this embodiment configured in this way will be described next.

A pinion is provided on the drive shaft 14 of a lift-and-carry type workpiece transfer device, and a payout spindle 20 provided with a rack 30 that engages with this pinion is provided on the opposite side of the lift spindle 12 across the drive shaft 14. Therefore, the lift spindle 1 is rotated by rotating the drive shaft 14 in the forward and reverse directions.
2 and the payout spindle 20 are opposite to each other, and the elevating and descending movements are performed by the same drive shaft 1.
4, the reverse lifting and lowering operations are performed quickly and synchronously.

The workpiece discharging rod 21 is connected to the workpiece holder 18 of the lift-and-carry type workpiece transfer device.
, and the workpiece dispensing rod 21 is swingably supported at the upper end of the dispensing spindle 20 in the lowered position.
The lifting and lowering operations between the workpiece receiving table 18 and the workpiece discharging rod 21 are quickly reversed, and
Since the workpiece unloading rod 21 is disposed at the lowered position of the workpiece holder 18, the workpiece holder 18
At the same time as the workpiece is lowered, the workpiece discharging rod 21 is raised and the workpiece 10 is quickly delivered to the workpiece discharging rod 21.

Then, the upper end of the rod 24 is rotatably connected to a position a certain distance away from the support part of the workpiece discharging rod 21, the lower part of this rod 24 is inserted into the hole 25a, and the lower end of the inserted rod 24 is connected to a stopper. Since the nut 26 for the stopper is screwed together, the stopper nut 26 contacts the hole 25a while the workpiece discharging rod 21 to which the workpiece has been transferred is rising, and the workpiece discharging rod 21 is tilted as indicated by 21'. However, the workpiece 10 is delivered to the position 10' by sliding on this inclined descending object delivery rod 21'. In the above description, the case where the nut 26 is used has been explained, but the stroke l of the rod 24 can be adjusted by adjusting the threading depth of the nut 26.
Even if the stroke of the rod 24 is restricted by fitting the rod 8 and the pin 29, the above effect is the same.

(Effects of the Invention) As detailed above, according to the present invention, a pinion is provided on the drive shaft of a lift-and-carry type workpiece conveyance device, and a pinion is provided on the drive shaft of the lift-and-carry type workpiece conveyance device. Since a payout spindle with a rack that engages with the pinion is disposed on the opposite side from the lift spindle, the lifting and lowering operations of the lift spindle and payout spindle can be synchronously reversed, and the lift and carry method is also possible. The workpiece unloading rod extends to the workpiece holder of the workpiece transfer device, and is supported at the upper end of the unloading spindle in a swingable manner at the position where the workpiece holder is lowered. Due to the difference between the lowering movement of the table and the rising movement of the workpiece discharging rod, the workpiece is quickly transferred to the workpiece discharging rod, and the upper end of the rod can be rotated to a position a certain distance away from the support part of the workpiece discharging rod. Since the rods are connected to each other and the vertical stroke of this rod is restricted, the workpiece discharging rod can tilt during its ascent and the workpiece can be discharged.

In this way, a series of operations from processing the workpiece to transferring the workpiece to the workpiece dispensing rod and discharging the workpiece by tilting the workpiece dispensing rod are performed continuously and quickly, so the transfer time is shortened. Productivity can be improved.

By simply adding a simple device to the lift-and-carry type workpiece transfer device, it becomes possible to unload the workpiece laterally, reducing equipment space and shortening the worker's walking distance. be able to. Furthermore, when this device is added to a lift-and-carry type conveying device, the above objective can be achieved by adding very simple parts, so the effectiveness of the added device increases accordingly.

[Brief explanation of the drawing]

Fig. 1 is a front view of the device of the present invention, Fig. 2 is a sectional view of the spindle drive part of the workpiece conveyance device, Fig. 3 is a front view of another embodiment in which a stopper is provided on the rod, and Fig. 4 is the main body. FIG. 5 is a sectional view of the spindle drive unit of the invention, FIG. 5 is a plan view of a payout rod and a workpiece, FIG. 6 is a side view of a conventional workpiece payout device, and FIG. 7 is a plan view thereof. DESCRIPTION OF SYMBOLS 11... Workpiece conveyance device, 20... Spindle for payout, 20a... Horizontal pin, 21... Workpiece payout rod, 22a Part of hole of workpiece payout rod, 2
3... Hole in other part of workpiece discharging rod, 24... Rod, 25... Bracket, 25a... Bracket hole, 26... Nut, 27... Shoulder.

Claims (1)

[Scope of utility model registration request] A rack provided on the lift spindle and a pinion provided on the drive shaft are engaged to raise and lower a workpiece holder provided at the upper end of the lift spindle, and the holder is raised from the lowered position and then moved in the transport direction. In a lift-and-carry type workpiece transfer device that moves forward to a position, then descends, and then retreats to its original lowered position, a pinion is provided on the drive shaft, and the lift spindle is positioned across the drive shaft. A payout spindle having a rack that engages with the pinion is disposed on the opposite side, and the payout spindle extends to the workpiece holder and is configured to swing the workpiece payout rod to the position where the workpiece holder is lowered. The rod is supported at the upper end, the upper end of the rod is rotatably connected at a certain distance from the support part of the workpiece discharging rod, and a member for regulating the vertical stroke of the rod is provided at the lower part of the rod. A descending object dispensing device characterized by: