JPH0328275B2 - - Google Patents

Description

Detailed Description of the Invention Technical Field The present invention relates to an improvement in a processing device in which a workpiece loading/unloading station and a processing station are separated from each other, and a transfer device is provided for reciprocating between the stations. It is something.

Prior Art In general, the above-mentioned processing apparatus has good workability because workpieces can be carried in and taken out at the same station, and for this reason, the above-mentioned processing apparatuses having various structures have been proposed.

However, no proposal has yet been made regarding the so-called practical processing apparatus described above, which has a simple structure and can quickly and easily carry in and out the workpiece.

Purpose of the Invention The present invention has been made in view of the above problems, and has a simple structure, and enables quick and easy loading and unloading and processing of workpieces.
The purpose is to provide practical processing equipment.

Embodiments The present invention will now be described in detail with reference to illustrated embodiments.

In FIGS. 1 to 3, reference numeral 1 denotes an underframe, and a pair of rails 2 and 3 are provided along the underframe 1 in the X direction. Reference numeral 4 denotes a traveling trolley that can run freely in the X direction along the rails 2 and 3, and is arranged, for example, at the truck body 5 and at each end of the truck body 5 in the X ₁ direction and the X ₂ direction, and engages with the rail 2. Grooved wheels 6, 6, wheels 7, 7 facing the grooved wheels 6, 6 and engaging the rail 3, and wheels 7, 7 disposed at each end of the bogie body 5 in the _X1 direction and the _X2 direction, respectively. a guide wheel 8 for engaging the rails 2 and 3 to prevent the bogie body 5 from floating;
8..., for example, guide wheels 8, 8, . Reference numeral 9 denotes inversion tables 11, 11, . . . , which are supported on the traveling cart 4 so as to be rotatable about a horizontal axis substantially parallel to the X axis, and are sized to overlap each other in the conveying direction depending on the tilted state. is a positioning mechanism with an appropriate structure disposed on the reversing table 9, and can be operated manually or automatically. 12 is a reversing drive mechanism for reversing the reversing table 9; in the case shown in the figure, the reversing drive mechanism 1 is connected by connecting a hydraulic motor and the reversing table 9;
2 are configured. 13 and 14 are stoppers for regulating the inversion position of the inversion table 9;
Reference numeral 15 denotes a gear, which is directly or indirectly connected to a rotary drive machine 16 supported by the traveling carriage 4, and is meshed with a rack 17 supported by the underframe 1. 18 and 19 are abutment members, and 21 and 22 are in contact with the abutment members 18 and 19 to move the traveling cart 4, respectively.
This is a stopper for positioning in the X ₂ direction and the X ₁ direction.

The first reversing cart mechanism A is constituted by the above-mentioned items 1 to 22. This first reversing truck mechanism A
On the _Y2 direction side, a second reversing trolley mechanism B, which is formed opposite to the first reversing trolley mechanism A in the Y direction, is arranged substantially parallel to the first reversing trolley mechanism A. Note that each part of the second reversing trolley mechanism B corresponds to the corresponding first reversing trolley mechanism A.
Each part will be explained with a attached.

The first and second reversing cart mechanisms A and B constitute a conveying device C that reciprocates between the loading/unloading station _S1 and the processing station _S2 .

Reference numerals D and D designate suitable processing machines disposed in the processing station _S2 , such as a rotary robot with an articulated arm, and an appropriate processing tool 23, such as a welding torch, attached to the tip end of the robot.

In the above, first, the traveling cart 4 of the first reversing cart mechanism A is positioned at the loading/unloading station _S1 ,
The traveling carriage 4a of the second reversing carriage mechanism B is positioned at the processing station _S2 . In this case, the contact member 1
8 abuts against the stopper 21 to position the traveling vehicle 4, and an abutment member 19a abuts against the stopper 21a to position the traveling vehicle 4a. In this state, the reversing drive mechanism 12 positions the reversing table 9 in a substantially horizontal state, as shown in FIG. 1, for example. That is, as shown by the two-dot chain line in FIG. 2, the reversing table 9 is reversed counterclockwise about _O1 as the center of rotation, and is positioned by coming into contact with the stopper 13. After that, the workpiece W is carried onto the reversing table 9, and the positioning mechanisms 11, 11...
Thus, the workpiece W and the reversing table 9 are positioned integrally. By the way, inversion table 9,9
Depending on the tilted state, a is large enough to overlap with, or interfere with, each other in the conveying direction, so it is operated as follows prior to the travel of the traveling carts 4, 4a. That is, the reversing drive mechanism 12 rotates the reversing table 9 as shown in FIG.
rotates clockwise around O ₁ , and stops at stopper 1.
4 and is maintained in an inverted state. Concurrently with this operation, as shown in FIG. 2, the reversing table 9a is maintained in an inverted state by contacting the stopper 14a. That is, the reversing tables 9 and 9a are maintained in a state of non-interference with each other, and the rotary drive machines 16 and 16a are driven respectively in this state,
The traveling truck 4 is made to travel in the _X1 direction, and the traveling truck 4a is made to travel in the _X2 direction. The abutting members 19 and 18a abut against the stoppers 22 and 21a, respectively, and the rotary drives 16 and 16a are stopped with the carriages 4 and 4a positioned at the processing station _S2 and the loading/unloading station _S1 , respectively. Thereafter, as shown by the two-dot chain line in FIG. 2, the reversing table 9 is reversed counterclockwise around _O1 , and the processing machine D is placed in a substantially horizontal state with the reversing table 9 in contact with the stopper 13. is operated to perform appropriate processing, such as welding. After performing the desired processing, the processing machine D is operated so that the processing tool 23 is brought to a suitable retracted position, and then the reversal drive mechanism 12 is driven so that the reversal table 9 is placed in the desired inverted state.

In this way, at processing station S ₂ (counterclockwise reversal of reversing table 9) → (processing operation)
→ (clockwise reversal of the reversing table 9), the workpiece W is carried in and out of the carry-in/out station _S1 .

That is, in this case, since the traveling carriage 4a is positioned at the carry-in/out station _S1 for the first time, the work to carry in the workpiece W is performed. First, as shown by the two-dot chain line in FIG. 2, the inversion table 9a is inverted clockwise around _O2 , and the workpiece is placed in a desired approximately horizontal state with the inversion table 9a in contact with the stopper 13a. W is carried onto the inversion table 9a. This workpiece W is positioned integrally with the reversing table 9a by the positioning mechanisms _11a , 11a, . is maintained in an inverted state by contacting the stopper 14a.

In this way, at the loading/unloading station S ₁ and the processing station S ₂ , the loading of the workpiece and the reversing operation of the reversing table 9a, and the processing of the workpiece and the reversing operation of the reversing table 9 are carried out at the same time, respectively.
After the reversing tables 9 and 9a are maintained in a state of non-interference with each other in the traveling direction as shown in FIG. 2 by the control means including appropriate detection means, the traveling carts 4 and 4a are moved in the X ₂ direction and the X direction, respectively. Run in _one direction. After the traveling carts 4 and 4a are positioned at the ends in the _X2 direction and the _X1 direction, respectively,
Inversion of the respective inversion tables 9 and 9a, processing, and loading/unloading of workpieces are performed as appropriate. In this case, since the processed workpiece is positioned on the traveling cart 4 of the first reversing cart mechanism A, after the workpiece is carried out appropriately, a new workpiece is placed on the reversing table 9. and position it. For example, loading/unloading cranes K ₁ and K ₂ installed on the ceiling are used.

In this way, workpieces to be processed are sequentially carried in and taken out and processed at the same time, and the workpieces are transported to each station at the same time.

Note that the respective positioning mechanisms 11 disposed in the first reversing trolley mechanism A and the second reversing trolley mechanism B,
If 11a is configured to position workpieces of different shapes, then workpieces of different shapes can be machined alternately. In this case, the processing station S ₂ may be provided with separate processing machines for processing different workpieces, but when the same processing tool 23 is used to perform appropriate processing on each workpiece, It is also possible to perform desired processing by having an existing industrial robot perform two systems of operation sequentially.

Of course, if the positioning mechanisms 11 and 11a of the first and second reversing cart mechanisms A and B are configured to position workpieces of the same shape, highly efficient machining can be performed. In this case, if the workpieces are positioned at the same position in each station by the respective positioning mechanisms 11 and 11a, the loading/unloading work and the processing machine can be simplified.

In the above description, the reversing drive mechanism is configured by connecting the hydraulic motor and the reversing table, but the reversing drive mechanism can be constructed using a fluid pressure actuated cylinder, an appropriate rotary drive machine, gears, or an appropriate link mechanism. Can be configured. Further, although the first and second reversing truck mechanisms A and B are provided with rotary drive machines 16 and 16a for driving the traveling trucks, respectively, it is of course possible to drive the respective traveling trucks by hydraulic cylinders. Furthermore, as shown in FIG. 4, rails 2, 3,
Traveling carts 4 and 4a that can freely travel along lines 2a and 3a
The front and rear parts of the cable 2 are connected by flexible cables 24, 24, such as wire ropes or chains, respectively.
4, 24 are restrained by appropriate restraints 25, 25, ... and an appropriate drive is connected to the traveling trolleys 4, 4a or the cables 24, 24, and the traveling trolleys 4, 24 are restrained via the cables 24, 24. 4a can also run in the X direction at the same time.

Further, the traveling carriage only needs to be constructed so as to be able to freely run along the rails, and therefore, one having an appropriate structure can be adopted. Of course, before running the traveling carts 4, 4a, the inversion tables 9, 9a are maintained in a state of non-interference with each other, but in this case, if each inversion table is inverted, the retraction distance of the inversion table Accordingly, the size of the device in the Y direction can be reduced. Despite this, it is possible to invert one of the inversion tables so that the inversion tables do not interfere with each other.

Furthermore, stoppers 13, 14 and 2
1 and 22 are advantageous because the positions of the reversing table 9 and the traveling trolley 4 can be reliably set, but the drive mechanism of the reversing table 9 and the traveling trolley 4, respectively, are advantageous.
Depending on the selected structure of the drive mechanism, the stopper 13,
14, 21, and 22 can be omitted as appropriate. Of course, in processing station _S2 , there are cases where it is preferable to appropriately vary the tilting state of the workpiece or to appropriately tilt the workpiece with respect to the horizontal state, such as during welding work or sealing work. Therefore, the reversing drive mechanism can be appropriately controlled so that the reversing table in the processing station _S2 is in a desired state.

Effects of the Invention As described in detail in the above embodiments, the present invention provides a processing apparatus in which a workpiece loading/unloading station and a processing station are separated from each other, and a conveyance device that reciprocates between the stations is provided. , first and second rails, first and second running carts that are respectively movable along the rails, and that are rotatable and tiltable about a horizontal axis substantially parallel to the rails on the running carts. Depending on the state, first and second reversing tables are sized to overlap with each other in the conveyance direction, first and second positioning mechanisms that position the workpiece on the reversing table, and reversing the reversing table. A transport device is constructed by arranging first and second reversing truck mechanisms substantially parallel to each other, and when the traveling truck is located at each station, the first and second reversing truck mechanisms are arranged substantially in parallel. Each reversing table of the reversing cart mechanism of No. 2 is maintained in a desired tilted state, and when the traveling cart is moved, the reversing drive mechanism maintains the reversing tables in a state of non-interference with each other, so that loading and unloading of workpieces is easy. Practical processing equipment that can perform work and processing operations at the same time, and transport workpieces to each station at the same time, making loading and unloading and processing of workpieces quick and easy. A device with a relatively simple structure can be realized.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a side view of FIG. 4 is a diagram showing main parts of a modification of the conveyance device shown in FIG. 1. 2, 3...Rail, 4...Traveling trolley, 9...Reversing table, 11...Workpiece positioning mechanism,
12... Reversing drive mechanism, A... First reversing trolley mechanism, B... Second reversing trolley mechanism, C... Conveying device, D... Processing machine, _S1 ... Loading/unloading station,
S ₂ ……Processing station.

Claims (1)

[Scope of Claims] 1. A processing device in which a workpiece loading/unloading station and a processing station are separated from each other, and a transfer device that reciprocates between the stations is provided, in which the first and second rails and a first and a second traveling carriage which are respectively movable along the rails, and which are freely reversible about a horizontal axis substantially parallel to the rails on the traveling carriages, and may rotate relative to the transport direction depending on the tilted state. first and second reversing tables sized to overlap with each other; first and second positioning mechanisms for positioning workpieces on the reversing tables; and first and second reversing drives for reversing the reversing tables. A transport device is constructed by arranging first and second reversing cart mechanisms substantially parallel to each other, and when the traveling cart is located at each station, each reversing table of the first and second reversing cart mechanisms is configured. the reversing table is maintained in a desired tilted state, and the reversing table is maintained in a state of non-interference with each other by the reversing drive mechanism when the traveling carriage is traveling. 2. The processing apparatus according to claim 1, wherein the positioning mechanisms of the first and second reversing cart mechanisms are arranged to position workpieces of different shapes, respectively. 3. The processing apparatus according to claim 2, wherein the processing station is provided with processing machines for processing workpieces having different shapes. 4. The processing apparatus according to claim 1, wherein the positioning mechanisms of the first and second reversing cart mechanisms are respectively arranged to position workpieces having the same shape. 5. The processing apparatus according to claim 4, wherein the positioning mechanisms of the first and second reversing cart mechanisms are arranged to position the workpiece at the same position in each station.