JPH0438529B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for disposing of machining scraps discharged from a machine tool in an automatic machining system, and particularly for disposing of machining scraps at a transfer station in front of the machine tool. When the chips are transferred to a transport vehicle and transported by a chip bucket at a certain processing waste dumping station, the chip bucket is tilted toward a predetermined processing waste container using the movement of the fork of the transport vehicle at the dumping station, and the processed waste is This invention relates to a chip bucket reversing device for dumping and accumulating chips.

[Prior art]

Conventionally, machining scraps discharged from machine tools are collected on a chip conveyor installed near the machine table, and the collected machining scraps are dumped all at once. In other words, in machining centers, etc., unmanned automatic machining is performed for long periods of time, so it is necessary to remove machining debris from around the machine, so when a large amount of machining debris that falls from the table or workpiece material is collected on a chip conveyor. It was designed for workers to collect and dispose of.

[Problems to be solved]

However, recent automatic machining systems generally have a large number of machining centers, which are collectively controlled by a central controller to advance automatic machining. Processing waste discharged from machines also needs to be automatically disposed of without operator intervention. At this time, the automatic processing system uses the workpiece material, processing tool,
Since a method is used in which setup tools such as fixtures and jigs are transported all at once by a transporter, processing waste can be accumulated in containers unmanned to a certain processing waste dumping station using this transport vehicle. is convenient.

Therefore, as part of the present invention, which enables unmanned operation of such processing waste processing, when a chip bucket containing processed waste is transported to a processed waste dumping station by a transport vehicle, the chip bucket is turned over and the processed waste is placed in a predetermined container. It is an object of the present invention to provide a chip bucket inverting device that allows chips to be dumped.

[Means of solution and action]

In view of the above-mentioned object of the invention, the present invention transfers processed waste discharged from a machine tool to a chip bucket installed at a processed waste transfer station in front of the machine, and transports the chip bucket to a processed waste dumping station using a transport vehicle. The chip bucket reversing device of the machining waste accumulating device for inverting the chip bucket and accumulating the machining waste at a predetermined position includes a machine base, the machine base is pivotally connected to the machine base via a pivot shaft, and the chip bucket is removed from the transport vehicle. a chip bucket platform for receiving the chip bucket, a driven gear provided on the rotation axis of the chip bucket platform, a drive gear provided on the drive shaft of the platform and meshed with the driven gear, and engaged with the fork device of the transport vehicle. and a fork engaging member that performs reciprocating motion as the fork device moves up and down; the fork engaging member engages with the drive shaft, and the reciprocating motion of the fork engaging member is converted into a rotational motion of the drive gear. a reversing mechanism, comprising a drive arm for transmitting and converting the chip bucket, and for reversing and tilting the chip bucket loading platform together with the received chip bucket by the lifting and lowering operation of the fork device of the transport vehicle; A chip bucket reversing device is provided, which includes a locking mechanism for preventing the chip bucket cart from sliding down in the tilting direction, and the chip bucket cart is reversely tilted using the movement of the transport vehicle and a part of its drive source. Processing waste is dumped and accumulated, and this chip bucket reversing device is not equipped with a special power source. Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

〔Example〕

Fig. 1 is a front view showing the configuration and processing waste dumping process of a chip bucket reversing device according to an embodiment of the present invention, Fig. 2 is a side view seen from the − arrow line in Fig. 1, and Fig. 3 is a view from the machine tool. A front view showing the transfer mechanism for transferring machined waste to the machined waste transfer station in front of it. Figure 4 shows the transport of the chip bucket carrying the machined waste and the reversing action of the chip bucket reversing device shown in Figure 1. FIG. 5 is a perspective view showing an example of a conveyance vehicle, and FIG. 5 is a plan view showing an example of the positional relationship between a machine tool, a processing waste transfer station, and a processing waste dumping station in an automatic machining system.

First, the chip bucket reversing device according to the present invention is installed at a pre-selected machining scrap dumping station in order to dump machining scraps generated by machining of a machine tool in a concentrated manner. Processed waste transported in containers is stored centrally in a large-capacity predetermined processed waste dumping container, and from there it can be transported out of the processing site at regular intervals or when necessary. It can be used very effectively in highly automated processing systems, such as modern factory manufacturing systems (FMS). Now, in FIG. 1, the chip bucket reversing device 10 has a machine base 12 having an appropriate height, and this machine base 12 is formed of iron frame material using an appropriate fixing method such as welding or bolting. be done. A reversing mechanism 14 is provided at the upper intermediate portion of the machine base 12, and a chip bucket platform 16 is provided at the top, which is capable of reversing around the horizontal axis by the action of the reversing mechanism 14. When the chip bucket 18 that has received processed waste is placed horizontally on the chip bucket loading table 16, the tip bucket loading table 16 is tilted toward a predetermined dumping container 20 provided on the floor by the action of the reversing mechanism 14. By doing so, the chip bucket 18 is also tilted and reversed so that its opening faces into the dumping container 20, and the basic operation is to dump the received processing waste into the dumping container 20.

Now, referring to FIG. 2 together with FIG. 1, the reversing mechanism 14 consists of a large gear 22 and a small gear 24.
It has a pair of gear mechanisms, and the large gear 22 is mounted on a reversing drive shaft 28 that is rotatably supported by bearing stands 26a and 26b provided in the middle of the machine base 12. Further, one end of a drive arm 30 is attached to the reversing drive shaft 28 to which the large gear 22 is attached, and this drive arm 30 extends in the direction opposite to the processing waste disposal container 20 on the machine base 12.
Moreover, when the chip bucket loading platform 16 is in a horizontal position before starting to tilt, it extends obliquely upward as shown in FIG. 1, and the other end is pivotally connected to the bracket 32 via a pivot shaft 34. At this time, the other end of the bracket 32 is fixed to approximately the center of a horizontally long bar 36 extending over the entire width of the machine base 12, and each roller attached to each end of the horizontally long bar 36 on the outside of the machine base Together with the holding plate 38, it is formed of a rectangular plate member. Therefore, in FIG. 1, the bracket 32 and both roller retaining plates 38 are horizontally long
They are shown stacked on top of each other. Each of the roller holding plates 38 has a pair of rollers 40,
40 are pivotally mounted, and a pair of rollers 40, 40
A horizontal rim 62 of a fork device 60 of a transport vehicle (described later) that transports the chip bucket 18 containing processed scraps is provided in the space with a space spaced apart in the vertical direction from the right to the left in FIG. to, i.e., the second
It is formed so that it can be inserted vertically from the front of the page of the figure. In other words, the rollers 40, 4
0 guides the horizontal rim 20 to be inserted smoothly when the horizontal rim 62 of the fork device 60 is inserted. In FIG. 1, the horizontal rim 62 of the fork device 60 is
Immediately after being inserted between each pair of rollers 40 of 8, the drive arm 30 is in a state of extending diagonally upward to the right, and then the fork device 60
When the machine 12 is lowered downward, the roller retaining plates 38, 38 move downward, and the horizontally elongated bar 36 also moves downward in parallel, and as a result, the drive arm 30 It is shown that the drive shaft 28 is pivoted about the reversing drive shaft 28 until it extends diagonally downward to the right. That is, the drive arm 30 is provided as a lever arm centered on the reversing drive shaft 28. Thus, when the reversing drive shaft 28 is pivoted via the drive arm 30, the large gear 22 mounted on the reversing drive shaft 28 rotates in a clockwise direction in FIG.

On the other hand, the small gear 24 meshed with the large gear 22 is attached to the rotating shaft 4 which is supported by bearings 42a and 42b attached to the side ends of the machine base 12, as is clear from FIG.
4, and reversing brackets 46a, 46b are also attached to this pivot shaft 44. And, these inversion brackets 46a, 46b
A chip bucket mounting stand 16 is fixed to the upper surface of the chip bucket. Therefore, the chip bucket loading stand 16 itself has a structure that allows it to pivot around the pivot shaft 44.

Due to the configuration of the reversing mechanism 14 as described above,
When the large gear 22 rotates clockwise in FIG. 1 as described above, the small gear 24 meshed therewith rotates counterclockwise in FIG. 1. Therefore, the rotating action of the pinion 24 transmits a turning action to the chip bucket cart platform 16 via the pivot shaft 44, and the chip bucket cart platform 16 rotates counterclockwise around the pivot shaft 44, that is, in the direction of the machining waste. It performs a reversing operation toward the dumping container 20. FIG. 1 shows two states in which the chip bucket loading table 16 is inverted toward the dumping container 20. Therefore, the chip bucket tray 18 receives and places the processed scraps on the chip bucket loading table 16. If so, the upper opening of the chip bucket 18 will be directed into the dumping container 20, and therefore the machining waste in the chip bucket 18 will be directed into the dumping container 20.
It falls inside and is dumped.

Here, when the chip bucket cart 18 placed on the chip bucket cart platform 16 is placed on the chip bucket cart platform 16 from the transport vehicle, there is a gap between the two so that the chip bucket cart 18 placed on the chip bucket cart platform 16 does not slip off the chip bucket cart platform 16 even during the reversing process. Suitable structures are provided so that a locking engagement is formed. That is, chip bucket 1
8 engages and supports the upper end surfaces 60a, 60a of the fork device 60 of the transport vehicle with the horizontal flanges 18a, 18a formed on the outer surfaces of both sides, whereby the present chip bucket reversing device 1 is removed from the transport vehicle.
Tip bucket inverter 10 to 0 or vice versa
As shown in FIG. 2, there are a pair of L-shaped hook members 64 on the left and right sides of the bottom of the chip bucket cart 18.
Furthermore, as is clear from FIG. 1, the hook members 6
4 is charged and engaged with the horizontal rib 62 provided at the upper part of the chip bucket loading platform 16 from the front side (right side in FIG. It is planned. Moreover, on the rear side of the chip bucket loading table 16 (that is, on the left side near the processed waste disposal container 20 in FIG. 1), there is an appropriate stop end on which a pair of hook members 64 on the front side as seen in the loading direction of the chip bucket 18 come into contact. 68 (see FIG. 1), a locking engagement structure is formed to prevent the chip bucket 18 from slipping off the chip bucket loading platform 16 toward the processed waste disposal container 20 during the reversing process. . In this way, in the process of tilting and reversing the tip bucket loading table 16,
The locking engagement structure configured to prevent the chip bucket cart 18 placed on the chip bucket cart platform 16 from slipping down is, as in the above-mentioned embodiment, in short, between the top surface of the chip bucket cart platform 16 and the bottom surface of the chip bucket cart 18. In the process of transferring and loading the latter chip bucket cart 18 to the former chip bucket loading table 16 by the fork device 60, only when the latter side is pulled out in the opposite direction to the loading direction, the latter side is moved to the former side. Therefore, unlike the embodiments shown in FIGS. 1 and 2, one or two slits are formed in the upper surface of the chip bucket table 16 in the charging direction. However, the inner end of this slit is formed to be non-penetrating, and on the other hand, the stud that engages with this slit is formed into an embodiment of a locking engagement structure in which the stud protrudes downward from the bottom surface of the tip bucket bag 18. It is also possible to obtain similar effects.

In addition, in the above-mentioned reversing mechanism, the example was made up of a pair of rotating gear mechanisms consisting of the driving side large gear 22 and the driven side small gear 24, but instead of this, the driving side large gear 22 is A rack member movable downward is substituted, and the upward and downward movement of this rack member is caused by the upward and downward movement of the fork device 60, so that the driven pinion meshed with the rack member is rotated. It is also possible to use a different embodiment.

FIG. 3 shows an example of the structure of the machined waste transfer mechanism from the machine tool to the machined waste transfer station. The machine tool shown in FIG. 3 is a machining center equipped with an automatic tool changer having a tool magazine 80, and a magazine disk 82 of the tool magazine 80 contains a plurality of cartridges 86 loaded with a plurality of tools 84. is stored, and automatic tool exchange is performed between this cartridge 86 and the tool spindle 88 according to the configuration disclosed in Japanese Patent Publication No. 59-35738, and the work table is changed by the tool 84 attached to the tool spindle 88. It has a configuration in which the workpiece W on the workpiece 90 is machined. In this case, in the machining center of this embodiment, a plurality of cartridges are installed between the lifting device 92 provided on the side of the tool magazine 80 and the cartridge reloading station 98 provided on the traveling path 96 side on which the carrier vehicle 94 travels. A cartridge stand 100 capable of storing a tool magazine 86 at a time is transported by a transport mechanism 102, and a tool magazine 8
The cartridge 86 housed in the magazine disc 82 of No. 0 is configured to be replaceable. In other words, the necessary cartridge 86 transported from the tool storage or tool setting station by the transport vehicle 94 is exchanged with the cartridge 86 containing unnecessary tools that have already been used in the machining center and have been returned to the tool magazine 80. In order to do this, a tool conveyance device consisting of the above-mentioned lifting device 92, conveyance mechanism 102, etc. is provided, and the details of such a tool conveyance device are described in Japanese Patent Laid-Open No. 62-63051.

Further, in the machining center, processing waste generated during the process of machining the workpiece W on the work table 90 is conveyed to the side of the machine by chip conveyors 104, 104 provided on both sides of the work table 90. Both chip conveyors 104, 104 have a wide opening at the top so that the chips that scatter or fall from the work table 90 toward the floor are delivered to the side of the machine without omission. It has an opening, and is configured to send processed waste using, for example, a feeder in the form of a feed screw. The processed chips thus fed and accumulated on the side of the machine are further transferred to a processed waste transfer station 108 using a lift-up chip conveyor 106 formed by a well-known belt conveyor or the like. In this case, in this example, the lift-up tip conveyor 106 is provided in parallel with the tool conveyance device 10, substantially above and below, and therefore the machining waste transfer station 108 is provided below the cartridge reloading station, and the conveyor 94 is the conveyance path 96
By stopping at a fixed position, it is possible to selectively perform both operations of reloading the cartridge and transferring the chip bucket 18 that receives the processing waste.
At the machined waste transfer station 108, the machined waste transferred from the machine tool by the lift-up conveyor 106 is dropped from its discharge port 106a and transferred to the transport vehicle 94.
The fork device 60 discharges the chips into the chip bucket 18 placed on the chip transfer station 108. At this time, the operation of the lift-up conveyor 106 is started in accordance with the timing when the empty chip bucket 18 is conveyed and installed at the processing waste transfer station 108.
A suitable detector such as a photoelectric detector detects that the amount of processing waste in the chip bucket 18 has reached a predetermined amount.
Alternatively, it is controlled to be stopped when detected by a weight detection type detector. Alternatively, the machine tool may be started and stopped periodically in response to the machine tool being operated for a predetermined period of time. In this way, when the chip bucket 18 is fully loaded with processing waste, the chip bucket 18 is again transferred onto the carrier 94 by the fork device 60 of the carrier 94, and
The chips are transported to a processing waste dumping station where the chip bucket reversing device 10 described above with reference to FIGS. 2 and 2 is installed.

Now, referring to FIG. 4, an example of the above-mentioned conveyance vehicle 94 is shown, and the conveyance vehicle 94 has wheels 110 (see FIG. 3) at the bottom of a chassis 112 and is connected to the conveyance path 96. It is designed as a vehicle that runs autonomously on the rails that form the . That is, the vehicle platform 112 is equipped with a control panel 114 on either the front or the rear in the direction of travel, and its operation is controlled in an unmanned manner through communication with an external carrier control device. A column swivel base 116 is provided on the chassis 112 so as to be able to rotate around the vertical axis, and a column 118 erected on the column swivel base 116 is configured to rotate around the vertical axis. A vertical guide surface 120 is formed in this column 118, similar to a column of a machine tool, and a saddle 122 is attached along this guide surface 120 so as to be able to move up and down. That is, this saddle 122 has a body part 124 and a lower support base 126, and the body part 124
A feed screw 130 hanging down from the top of the column 118 is screwed into a feed nut 128 provided on the column 118, and a lifting motor 132 attached to the top of the column 118 rotates the feed screw 130 to rotate the feed nut 128. The raising and lowering action of the saddle 122 is performed through the handle. Lower support base 1 for saddle 122
The aforementioned fork device 60 consisting of a pair of fork blades is supported on the saddle 12 .
The fork device 60 also moves up and down as the fork device 60 moves up and down. It is used for the return action in the opposite direction.

Further, a forward-reverse feed nut (not shown) is provided on the bottom of the fork device 60, and this feed nut meshes with a motor-driven forward-reverse feed screw shaft 138 provided on the lower support base 126.
As a result, as the feed screw shaft 138 rotates, the fork device 60 moves back and forth between two positions: a position housed on the lower support base 126 and a position protruding forward from the support base 126. The processing waste transfer station 108 and the processing waste dumping station 174 described above utilize this forward and backward movement action.
(See FIG. 1) for transferring the tip bucket 18. In addition, Chip Bucket 18
When transferring, the column swivel table 116 turns in advance to turn the fork device 60 by 90 degrees with respect to the forward and backward movement direction of the chassis 112, and then the fork device 60 performs the above-mentioned forward and backward movement, so that the fork device 60 does not cause any interference. The tip bucket cart 18 can be transferred. In addition, in the transport vehicle 94 shown in FIG.
Reference numeral 140 denotes a fork support stay, which extends when the fork device 60 moves forward.
The fork device 60 is provided as a member to support the chip bucket 18 from below, and allows the fork device 60 to smoothly transfer the chip bucket 18 even when the chip bucket 18 is full of processed scraps and becomes heavy.

FIG. 5 shows the mutual positional relationship in the arrangement of a machine tool (machining center), a machining scrap transfer station, and a machining scrap dumping station when the chip bucket reversing device according to the present invention is applied to an automatic machining system. The transport vehicle 94 that travels has two machining centers 164, 1
64, tool room tool magazine 66, workpiece material delivery station 68, pallet stocker 17
0. If a layout is configured in which the ground control device 172 of the transport vehicle 94, the processed waste transfer station 108, and the processed waste dumping station 174 are arranged,
The transport vehicle 94 is located opposite the delivery station 168, and is used to attach workpiece materials to pallets received from the pallet stocker 170, store the pallets with the workpiece materials in the pallet stocker 170, and attach processed materials transported from the machining center 164. Place the pallet at station 1.
68 to remove processed material and store empty pallets in pallet stocker 170. In addition, at a position facing the tool room magazine 166, the tool cartridge with the tools arranged in the magazine 166 is received via a cartridge stand 166a for transporting tools, and the tool cartridge that has been used in the machining center 164 is received. The cartridge can be returned to the tool room tool magazine 166 via the cartridge stand 166a.

On the other hand, the machining center 164 usually includes a pallet stand 164a, a pallet changer 164b,
Since the chip conveyor 104, the cartridge stand elevating device 92 for the tool magazine 80, the cartridge (tool) transport device 102, etc. are provided, the workpiece material is not transported at the position where the transport vehicle 94 faces the pallet table 164a of each machining center 164. Pallets with finished materials or pallets with processed materials can be delivered. At the cartridge reloading station 98 and the processing waste transfer station 108, the reloading of cartridges and the transfer of the chip bucket 18 can be carried out as described above. The processed waste is transferred from the processed waste transfer station 108 to the processed waste dumping station 1.
74, and are dumped and accumulated in the dumping container 20 by the chip bucket reversing device 10 according to the present invention.
Since two machining centers 164 are provided in the above-mentioned automatic machining system, all the machining scraps that will be generated are transferred to the machining scrap dumping station 17.
The processed waste is collected in the processing waste disposal container 20 of No. 4.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, processing waste inevitably generated by machining of a workpiece material is transported from a machine tool to a predetermined processing waste dumping station provided at a corner of the processing site, for example. By providing a chip bucket reversing device that is used when transporting by car and dumping the processed waste into the processing waste dumping container in a concentrated manner, it has become possible to automatically dump and accumulate processed waste without an operator. be. Furthermore, in the present invention, machining waste is loaded into a chip bucket from the machine tool side and transported by a transport vehicle, and the transport vehicle transfers and places the chip bucket onto a chip bucket reversing device using a fork device, and the fork device operates. Since the tip bucket is tilted and reversed using the chip bucket as it is, and the machining waste is automatically dumped from inside the chip bucket into the machining scrap dumping container, there is no need to equip the chip bucket reversing device with actuator means for reversing, and therefore the machine tool Peripheral devices that are not directly related to the machining function of the machine are extremely effective in economical terms because they can be constructed at low cost and as simply as possible. If the chip bucket reversing device according to the present invention is applied to an automatic machining system such as FMS, it becomes possible to appropriately dispose of machining waste in order to smoothly advance the continuous operation of the machining system.

[Brief explanation of drawings]

Fig. 1 is a front view showing the configuration and processing waste dumping process of a chip bucket reversing device according to an embodiment of the present invention, Fig. 2 is a side view seen from the − arrow line in Fig. 1, and Fig. 3 is a view from the machine tool. A front view showing the transfer mechanism (lift chip conveyor) for transferring processed waste to the processed waste transfer station in front of it;
FIG. 4 is a perspective view showing an example of a transport vehicle for transporting a chip bucket cart carrying processed waste and for starting the reversing action of the chip bucket reversing device shown in FIGS. 1 and 2;
FIG. 5 is a plan view showing an example of the layout of a machine tool, a processing waste transfer station, a processing waste dumping station, etc. in an automatic processing system. DESCRIPTION OF SYMBOLS 10... Chip bucket reversing device, 12... Machine base, 14... Reversing mechanism, 16... Chip bucket loading stand, 18... Chip bucket, 20... Processing waste dumping container, 60... Fork device of transport vehicle, 94
. . . Transport vehicle, 96 . . . Transport path, 108 .

Claims (1)

[Scope of Claims] 1. Processed waste discharged from a machine tool is transferred to a chip bucket placed at a processed waste transfer station in front of the machine, and the chip bucket is transported to a processed waste dumping station by a transport vehicle, and the chip bucket is reversed. A chip bucket cart reversing device of a processing waste accumulating device that collects processed waste at a predetermined position includes a machine base 12, which is pivotally connected to the machine base 12 via a pivot shaft 44, and which transports the chip bucket cart 18 from the transport vehicle 94 to the machine base 12.
a driven gear 24 provided on the pivot shaft 44 of the chip bucket platform 16, and a drive shaft 2 of the machine platform 12.
8, a drive gear 22 meshing with the driven gear 24; fork engaging members 32, 34 that engage with the fork device 60 of the transport vehicle 94 and perform reciprocating motion as the fork device 60 moves up and down; 3
6, 38, 40, and a drive arm 30 that engages with the fork engaging member and the drive shaft 28, and transmits and converts the reciprocating motion of the fork engaging member into the rotational motion of the drive gear 22. Then, the received chip bucket cart 18 and the chip bucket cart mounting platform 16 are transferred to the fork device 60 of the transport vehicle 94.
A reversing mechanism 14 that inverts and tilts by raising and lowering the
A chip bucket reversing device comprising: and locking mechanisms 64, 66, 68 that prevent the chip bucket cart 18 from slipping off in the tilting direction from the top of the chip bucket cart platform 16 during inversion and tilting. 2. The chip bucket reversing device according to claim 1, wherein the driven gear 24 of the reversing mechanism 14 is formed to have a smaller diameter than the driving gear 22, and forms a mechanism for amplifying the turning angle of the chip bucket cart mounting base 16. .