JPS6228605Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention is suitable for automatic parts processing, for example, where parts (workpieces) flowing on a processing line are taken out from the processing line and loaded onto pallets. Regarding a loading device.

(Prior art) For example, in the automobile industry, an automatic loading device that mechanically carries out a workpiece such as a side panel with a window frame flowing on a processing line and loads it onto a pallet is known, for example, from Japanese Patent Laid-Open No. 53-100569. It is disclosed in the publication number etc. However, in this case, since the pallet has a limited number of loading capacities, once a predetermined number of workpieces have been loaded, it must be replaced with the next pallet.

Since the working time for this pallet exchange is longer than the above-mentioned workpiece unloading interval time, it is necessary to deal with the workpieces being unloaded during the pallet exchange.

Conventionally, during pallet exchange, the machining line was stopped, or the work described above was carried out manually, and the unloaded workpieces were stored in a predetermined position, and when a new pallet was set at the loading position, A method was taken to load the stored workpieces onto pallets, but this work was extremely burdensome and hard work for the workers.

(Purpose of the invention) The purpose of the invention is to provide an automatic loading device that can completely automatically load workpieces without requiring supplementary manual work by workers, and can also smoothly load pallets.

(Structure of the invention) This invention receives a predetermined amount of parts (workpieces) from a revolving arm onto a hanger at a receiving position, then lowers the hanger from the receiving position and transfers the parts on the hanger to a pallet on a pallet support stand. Next, this pallet is moved back by a predetermined pitch by a conveyor section, and parts are loaded directly onto the pallet from the swing arm, and during this time, the hanger is moved back,
When the pallet is lifted, moved forward and on standby, and all the parts are loaded on the pallet and the pallet support is moved,
The present invention is characterized by an automatic loading device configured to lower a hanger to a parts receiving position.

(Effects of the invention) According to this invention, parts carried out by a swing arm are loaded on a hanger, and after this hanger receives a predetermined amount, the pallet is set at the receiving position and the parts loaded on the hanger are transferred to the pallet. At the same time, the parts are then loaded directly onto the pallet, and when the pallet is replaced, the hanger is lowered to the receiving position and the parts are loaded onto it, so there is no supplementary work for the worker to load the parts, and the process is completely completed. Parts can be automatically loaded continuously.

(Example) An example of this invention having the above-mentioned features will be described in detail below based on the drawings.

The drawing shows the work (parts) of the side panel with window frame.
This shows an automatic loading device for loading pallets onto pallets.
In the figure, a workpiece 11 that has been subjected to a predetermined process such as press processing is continuously conveyed at a predetermined interval on a conveyor 12 for conveying out, which is constituted by a belt conveyor, for example. A lifter 14 that is operated up and down by an appropriate hydraulic cylinder (not shown) is provided at the set unloading position 13 of the workpiece 11.
normally waits at a position below the conveyance surface of the conveyor 12 for carrying out, and rises in synchronization with the workpiece 11 reaching the carrying out position 13, and in the process of rising, the conveyor 12
Place the upper workpiece 11 on the upper surface of the lifter 14,
A workpiece unloading device 15 provided at an upper position
It is then carried out and then returned to its original position.

The above-mentioned workpiece unloading device 15 has a traveling body 16 and a turning arm 17, and the traveling body 16 moves along a guide rail 19 constructed between the aforementioned unloading position 13 and a later-described receiving position 18 for the workpiece 11. The swing arm 17 is partially pivoted to the continuous portion of the above-mentioned running body 16 and is provided so as to be able to rotate between a horizontal position and a vertical position. This is done by a driving means such as a motor or hydraulic cylinder.

When the above-mentioned swing arm 17 is in a horizontal position,
Suction pads 20, 20 are provided on the lower surface side, and the suction pads 20, 20 are connected to a suction pump (not shown) via a control valve (not shown), and the swing arm 17 is in a horizontal state at the unloading position 13. In this case, when the workpiece 11 is supplied from the lower lifter 14, the suction pads 20, 20
1, the rotating arm 17 moves to the receiving position 18 and rotates to the vertical position, and when the work 11 is received by the loading device 21 described later, the suction pad 2
At 0 and 20, the adsorption is controlled to release the adsorption.

The above-mentioned receiving position 18 is a position away from the above-mentioned unloading position 13, and allows the rotation arm 17 to rotate between the horizontal state and the vertical state, and the workpiece 1
1, and the above-mentioned loading device 21 is installed corresponding to this receiving position 18.

The above-mentioned loading device 21 is composed of a hanger 22 and a pallet support stand 23.

As shown in FIG. 2, the workpiece 11 described above has a punched part 24 in which the window frame part is punched out by press working, and the upper edge 25 of this punched part 24 is separated from the right and left appropriately. By locking the workpiece 11 in a stable position, it is possible to receive the workpiece 11 in a stable posture, and also in the pallet described later, the upper edge 25 of the punched part 24 can be locked at appropriately spaced left and right positions. This allows loading in a stable position. Note that the suction pad 20 of the rotating arm 17 suctions a flat portion other than the punched portion 24.

As shown in FIG. 3, the above-mentioned hanger 22 has a left and right pair, and since the left and right hangers 22 have the same configuration and are interlocked, only one of them will be explained.

That is, the hanger 22 includes a support frame 26 having an L-shaped side surface, and the free end side of the horizontal portion 27 of the support frame 26 is located opposite to the swing arm 17 side.

The vertical portion 28 of the support frame 26 mentioned above is supported by guide rollers 30 of the carrier 29 so as to be movable in the vertical direction, and a rack 31 is carved on one side edge of the vertical portion 28. hand,
A pinion 32 that meshes with this rack 31 is pivotally supported by a carrier 29, and this pinion 32 is connected via a transmission belt 34 to a first motor 33 mounted on the carrier 29 and controlled in forward and reverse directions. 33 is controlled in forward and reverse directions, the support frame 2 is moved through the rack 31 and pinion 32.
6 is operated to move in the vertical direction.

The carrier 29 is supported by guide rollers 36 on a guide rail 35 installed in the forward and backward directions with respect to the receiving position 18 so as to be movable in the forward and backward directions.
Furthermore, a rack 37 is carved into the guide rail 35, and a pinion 38 that meshes with this rack 37
is pivotally supported by the carrier, and this pinion 38 is connected via a transmission belt 40 to a second motor 39 mounted on the carrier 29 that is controlled in forward and reverse directions. The support frame 26 is moved back and forth via the rack 37 and pinion 38.

Sprockets 41 to 44 are pivotally supported at the free end, bent portion, and vertical portion 28 of the horizontal portion 27 of the support frame 26, respectively, and a hanger chain 43 shown as an example of a conveying portion is attached to these sprockets 41 to 44. Furthermore, this chain 45 is provided so that a portion corresponding to the upper edge portion of the horizontal portion 27 is located above this upper edge portion, and the workpiece 11 is loaded on the chain 45 at this position. There is.

Furthermore, the aforementioned sprocket 44 is attached to the support frame 2.
The hanger chain 45 is driven by a third motor 46 attached to the support frame 26 via a transmission belt 47, and the drive direction is directed to the chain 45 at the upper edge portion of the horizontal portion 27 of the support frame 26. is the direction in which it moves toward the vertical portion 28, and is driven intermittently in accordance with the loading interval of the works 11.

A conveyor 48 consisting of a belt conveyor is located on the upper surface of the pallet support stand 23 mentioned above, and a pulley 4
A fourth motor 52 attached to a support 51 is connected to one pulley 49 via a transmission belt 53. The workpieces 11 are intermittently driven in the backward direction corresponding to the intervals at which the workpieces 11 are loaded.

Support rods 55, 55 are vertically disposed on the lower surface of the above-mentioned support stand 51, and the support rods 55 are supported by guide rollers 57 on the support legs 56, 56 so as to be movable in the vertical direction. has the same shape as the rack 5
8,58 are engraved, and these racks 58,58
Pinions 59, 59 of the same shape mesh with each other and are driven by the support legs 56, 56.

Furthermore, the above-mentioned pinions 59, 59 have racks 61, which are carved in the same shape as the operating rack rod 60.
61 are engaged with each other, and this rack rod 60 is driven in forward and reverse directions by a hydraulic cylinder 62 attached to one of the supporting legs 56. By this drive, the conveyor 48 can be moved up and down in a horizontal state via the pinions 59, 59 and the racks 58, 58 of the support rods 55, 55.

The above-mentioned pallet 54 is equipped with an arm 63 for loading the work 11, and this arm 63 is composed of a pair of left and right arms, and the distance between the arms is such that it can be positioned outside the pair of left and right hangers 22, 22. They are arranged so that they do not interfere with each other.

Of course, it may be provided so as to be located inside the hangers 22, 22. Further, the loading capacity of the workpieces 11 of the arm 63 is set to be larger than that of the above-mentioned hanger 22.

The operation of the automatic loading device configured in this way will be explained.

The hanger 22 of the loading device 21 is received at the receiving position 18
The pallet 54 is set at a height position where the workpiece 11 can be received, and the pallet 54 is not placed on the conveyor 48 of the pallet support stand 23. Further, the rotating arm 17 of the workpiece unloading device 15 waits in a horizontal position above the unloading position 13 (see FIG. 4A).

The carry-out conveyor 12 carries the workpiece 11 to the carry-out position 1.
3, the lifter 14 rises, places the work 11 on its upper surface, and supplies it to the swing arm 17 waiting above.

The swing arm 17 attracts the workpiece 11 with the suction pads 20, 20, and then the traveling body 16 travels to the receiving position 18, at which the swing arm 17 is rotated from a horizontal state to a vertical state.

When the swing arm 17 is in the vertical state, the punched part 24 of the workpiece 11 is inserted into the hanger 22, and then the suction pads 20, 20 release the suction of the workpiece 11, so that the workpiece 11 is attached to the hanger 22. Constituent hanger chain 45
loaded on top.

When the hanger chain 45 loads one workpiece 11, the third motor 46 performs one forward intermittent drive corresponding to the loading pitch to transport the workpiece 11 inward by one pitch.

The swing arm 17 that has been rotated to the vertical state is returned to the horizontal state, and the traveling body 16 is returned to the unloading position 13 and moved to the next workpiece 1.
Prepare for carrying out step 1.

Such operations are repeated in sequence, and the pallet 54 is set in the middle of loading the hanger 22 with the number of loading capacity.

That is, as shown in FIG. 4, the pallet 54 is placed on the conveyor 48 of the pallet support stand 23 with the free end side of the arm 63 facing the receiving position 18 side, and then the height of the arm 63 of the pallet 54 is adjusted. Operate the hydraulic cylinder 62 to move the conveyor 48 to a position slightly lower than the height of the hanger 22.
Then, the fourth motor 52 is driven in normal rotation to rotate the conveyor 48 in the forward direction and convey the pallet 54 below the receiving position 18.

At this time, the arm 63 of the pallet 54 is inserted into the punched part 24 of the work 11 already loaded on the hanger 22.

Further, the set position of the arm 63 of the pallet 54 is such that the work 11 loaded on the hanger 22 is placed in the arm 6.
3 is packed in the rearmost position of the arm 63, and the arm 63 is set in a position where a portion capable of loading a predetermined number of works 11 is left on the free end side (see Fig. 4B). .

When the pallet 54 is set as described above and the workpieces 11 are loaded on the hanger 22 to the extent of its loading capacity, the hydraulic cylinder 62 is operated in the forward direction to change the height of the arm 63 of the pallet 54 from the swing arm 17. The workpiece 11 is raised to a receiving position where it can be received.

In synchronization with the above-mentioned operation, the hanger 22 drives the first motor 33 in normal rotation to lower it. During this lowering, the hanger chain 45 of the hanger 22
The workpieces 11 loaded on the pallet 54 are transferred to the arm 63 of the pallet 54.

Thereafter, the hanger 22 is moved backward by the forward rotation of the second motor 39 to a position at the rear of the pallet 54 where there is no mutual interference (see FIG. 4C), and further raised by the reverse rotation of the first motor 33. Furthermore, by driving the second motor 39 in the reverse direction, the hanger 22 is positioned above the receiving position 18 and is on standby. (See Figure 4 D).

On the other hand, the pallet 54 that has received the workpieces 11 from the hanger 22 loads the workpieces 11 in parallel from the swing arm 17 directly onto the arm 63 by intermittent reverse rotation driving of the fourth motor 52 corresponding to the loading pitch.

When the limit number of works 11 of the set loading capacity is loaded on the arm 63 of the pallet 54 mentioned above,
The pallet support stand 23 lowers the conveyor 48 by operating the hydraulic cylinder 62 in the opposite direction and lowers the pallet 54.
The arm 63 is moved to a position below the receiving position 18, and at the same time, the fourth motor 52 is switched to reverse continuous drive, and the pallet 54 is transported to the rear position and a new empty pallet 54 is replaced.

Furthermore, in synchronization with the arm 63 of the pallet 54 being lowered from the receiving position 18, the hanger 22, which had been waiting above, is lowered to the receiving position 18 by the forward rotation of the first motor 33, and the pallet 54 is lowered to the receiving position 18. After retracting, the workpiece 11 is placed on this hanger 22.
is loaded.

By sequentially replacing the hanger 22 and the pallet 54 as described above, the workpieces 11 can be continuously loaded without stopping the conveyor 12 for carrying out.

Note that the hanger chain 45 of the hanger 22 and the conveyor 48 of the pallet support stand 23 are
is driven intermittently in accordance with the loading pitch when the workpieces 11 are loaded, but may be driven continuously at a low speed corresponding to the loading pitch.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and FIG. 1 is a side view of an automatic loading device. Figure 2 is a front view of the workpiece.
FIG. 3 is a side view of the loading device. FIGS. 4A to 4D are explanatory diagrams showing the loading state. 11...Work, 17...Swivel arm, 18...
...Receiving position, 22... Hanger, 23... Pallet support stand, 26... Support frame, 45... Chain for hanger, 48... Conveyor.

Claims (1)

[Scope of Claim for Utility Model Registration] An automatic loading device that loads parts in parallel on a pallet, comprising a swing arm that receives the parts in a horizontal state and turns them into a vertical state, and a swing arm that receives the parts in the vertical state by the swing arm. It has a conveyance section that moves backward intermittently by a predetermined pitch, and lowers a support section that supports this conveyance section.
A hanger that can move backward, upward, and forward, and a pallet support stand that has a conveyor section at the lower part of the hanger that can place a pallet on top and move backward by a predetermined pitch, and receives a predetermined amount of parts from a rotating arm. After receiving the parts on the hanger at the position, the hanger is lowered from the receiving position and the parts on the hanger are transferred to the pallet on the pallet support stand.Then, this pallet is moved backward by a predetermined pitch by a conveyor section, and is placed directly on the pallet from the rotating arm. While parts are loaded, the hanger is moved back, up, and forward to standby during this time, and when all the parts are loaded on the pallet and the pallet support is moved, the hanger is automatically lowered to the parts receiving position. Loading device.