JPS63123653A - Workpiece carry-in/out device - Google Patents

Abstract

PURPOSE:To simplify the arrangement and reduce the space for installation by using No.1 and No.2 supporting members and a gripping device to carry an unprocessed work transported on a conveyor to a processing machine, and by carrying out processed works onto the conveyor. CONSTITUTION:No.1 and No.2 supporting members 30, 40 and a gripping device 50 are installed at a rotor 20 situated at the front of a processing machine 15. Thereby an unprocessed work W transported by a conveyor 11 is carried into the processing machine 15, while processed works W are carried out onto the conveyor 11, and the work W is handed over between the conveyor 11 and processing machine 15. This eliminates necessity for installing any device and station for loading and unloading in front of and behind the processing machine 15 viewed in the transport direction of the W. Thereby the work carry- in/out device can be simplified as a whole, and the space for installation be reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a workpiece in which an unprocessed workpiece such as a connecting rod of an internal combustion engine is carried into a processing machine, and a processed workpiece is carried out from the processing machine. Related to equipment for loading and unloading items.

[Prior art]

An example of this type of workpiece loading/unloading device is shown in FIG. 7. A loading station S1 and a loading station S3 are provided before and after a processing station S2 for processing a workpiece W by a processing machine M, and a circuit transfer device is provided between each station. In this workpiece loading/unloading device, an unprocessed workpiece W sent in a horizontal state by a chute or the like is transferred to a loading station S.
After arranging them two by two as shown in A using the loading device 1, they are stood up and supported by a transfer device, and this transfer device transfers them to the processing station S.
2. The two workpieces W processed at the same time by the processing machine M are transported to the unloading station S3 by the transfer device, and are removed from the transfer device by the unloading device and placed in a horizontal state, and then sent one by one to the next process. .

[Problem that the invention seeks to solve]

In such a workpiece loading/unloading device, each station S1. for loading and unloading is provided before and after the processing station S2. Since S3 is required, the installation space of the device becomes large, and since loading and unloading devices are required, the device becomes complicated and the equipment cost increases. The present invention attempts to solve such problems.

[Means for solving problems]

For this purpose, the workpiece loading/unloading device according to the present invention has a first
As illustrated in Figs.
In the workpiece loading and unloading device that carries out workpiece W from 5.
a conveyor 11 that supports and conveys the workpiece parallel to the front surface of the processing machine 15; Rotating body 2 movably supported by outer frame 13
0, and first and second support members 30.4 that are movably provided on the rotary body in directions perpendicular to the axis and with a phase difference of 90 degrees from each other, and are driven forward and backward by a predetermined distance, respectively.
0, a gripping device 50 provided on each of the first and second support members to removably grip the workpiece W, and a gripping device 50 that rotates the rotating body 20 to three positions having a phase difference of 90 degrees. An indexing device 60 for positioning is provided, and the first and second support devices 30.40 transfer the workpiece W to and from the conveyor 11 and the processing machine 15 via the gripping device 50. It is characterized by the fact that

[Effect]

In the standby state, the first and second support members 30 and 40 provided on the rotating body 20 are indexed to the conveyor 11 side and the processing machine 15 side, respectively, and when the processing of the workpiece W is completed, the second support members 30 and 40 are As the support member 40 moves forward, its gripping device 50
The first support member 30 and its gripping device 50 operate in a similar manner at the same time or before this to grip the unprocessed workpiece W on the conveyor 11 and move backward while gripping the processed workpiece. fall back. Next, the indexing device 60 rotates the rotary body 20 to index the first support member 30 toward the processing machine 15, and in this state, the first support member 30 moves forward to remove the unprocessed workpiece W that it is gripping. It is supported by the processing machine 15, releases the grip of the grip device 50, and then retreats. Next, the indexing device 60 rotates the rotating body 20 again to move the second support member 4
0 to the conveyor 11 (1'l), and in this state, the second support member 40 moves forward, places the processed workpiece W that it is gripping on the conveyor 11, releases the grip of the gripping device 50, and then retreats. Next, the indexing device 60 rotates the rotating body 2
0 is further rotated to index both support members 30 and 40 to the standby position. In this state, the conveyor 11 sends the processed workpiece W to the next process, and also feeds the unprocessed workpiece W to a position corresponding to the first support member 30 and stops, completing one cycle of loading and unloading. .

〔Effect of the invention〕

According to the present invention, the unprocessed workpiece conveyed by the conveyor is carried into the processing machine by the operation of the first and second support members and the gripping device provided on the rotary body located in front of the processing machine. At the same time, the processed workpiece is transferred onto the conveyor, so there is no need to provide devices and stations for loading and unloading before and after the processing machine in the direction of conveyance of the workpiece. Therefore, the workpiece loading/unloading device is simplified as a whole, and the installation space is reduced, so that equipment costs can be reduced.

[Example] The present invention will be explained below using examples shown in FIGS. 1 to 6. In this embodiment, two connecting rods are transported into and out of the processing machine at the same time. As shown in Figure 1, processing v
&15 is a processing unit support 16 fixed on the bed IO, a processing unit 17 that is supported and driven on the processing unit support 16 so as to be movable in the front-rear direction perpendicular to the front surface 15a of the processing machine 15, and the bed. The machining unit 17 is configured to move forward and process a workpiece (connecting rod) W supported by a support jig 19 of the workpiece mount 18. . As shown in FIGS. 1 and 3, an outer frame 13 consisting of a pair of left and right support plates is fixed to both sides of the workpiece mounting table 18 and protrudes forward. is provided with a conveyor 11 that supports the workpiece W and conveys it in a direction parallel to the front surface 15a of the processing machine 15.The conveyor 11 includes:
As shown in FIG. 2, a workpiece stopper 12 moves forward and backward according to predetermined conditions and stops a predetermined workpiece at a predetermined position among the workpieces W conveyed by the conveyor 11, and allows other workpieces to pass through. It is provided.

As shown in FIGS. 1 to 3, a conveyor 11 is attached to the outer frame 13.
A rotating body 20 is supported so as to be rotatable about an axis parallel to the conveyance direction. The rotating body 20 is supported by the left and right support plates of the outer frame 13 via shaft portions 21 and 22 formed at both ends thereof, and is indexed to three positions having a phase difference of 90 degrees by an indexing device 60, which will be described later. It has become.

As shown in FIGS. 2 to 4, the rotating body 20 has first and second supporting members 30 having substantially the same structure and movable in directions perpendicular to the axis thereof and having a phase difference of 90 degrees from each other. .40
is supported by a forward and backward drive device 2 built into the rotating body 20.
4, it is driven forward and backward. The first support member 30 includes a base plate 31, a first guide bar 32 and a first rack bar 33, which are erected in parallel to each other, and two sets of supports 34 and 35 which are erected on the other side of the base plate 31. The second support member 40 is different from the first support member 30 only in the longitudinal attachment positions of the second guide bar 42 and the second rack 43 relative to the second substrate 41, and other shapes and dimensions. is the same as the first support member 30. The rotating body 20 has a first support guide cylinder 37 and a first
The rack guide cylinder 38 is offset and fixed, and the second support guide cylinder 47 and the second rank guide cylinder 4B are similarly offset and fixed perpendicular to both guide cylinders 37, 38. Bars 32 and 33 are slidably fitted into the guide cylinders 37 and 38, respectively, and bars 42 and 43 are slidably fitted into the guide cylinders 47 and 48, respectively.
The second support members 30 and 40 are guided and supported by the rotating body 20 so as to be movable in directions perpendicular to the rotating wheel line and with a phase difference of 90 degrees from each other. Pillars 34 and 44 and 35 and 45
are arranged on the same plane perpendicular to the axis of the rotating body 20, and each support column 34. 35. 44. 45 have narrow diameter portions 34a, 35a, and 44a that fit into holes at both ends of the connecting rod W, which is a workpiece, to position the workpiece when it is gripped by a gripping device 50, which will be described later.

45a is formed. In addition, in this example,
Each support column 34.35.44.45 is offset in the same direction as each guide bar 32.42 and rack bar 33.43 with respect to the axis of the rotating body 20, so that each support member 30.40 Since interference between various parts during forward and backward movement is alleviated, the whole can be made relatively compact.

As shown in FIGS. 2 to 4, the advancing/retreating drive device 24 for moving both support members 30 and 40 forward and backward includes a drive shaft 25 coaxially rotatably supported within the rotating body 20, and a rotating body. 20
A plunger 29 has rack teeth 29a that are fitted into the cylinder 28 and mesh with a small-diameter pinion 26 formed on the drive shaft 25. A large-diameter pinion 27 is formed that meshes with the rack teeth 33a, 43a of the first and second rack pars 33.43. Shaft portion 22 of rotating body 20
By alternately supplying working fluid to both chambers of the advancing/retracting cylinder 28 from the distributor 23 provided at one end through the circuit path, both the support members 30 and 40 are simultaneously driven forward and backward in each movement direction. .

As shown in FIGS. 2 to 4, the first and second support members 30
．． Each of the 40 substrates 31, 41 is provided with a gripping device 5o that removably grips the workpiece W. The gripping device 50 holds the substrate 3 between each support column 34, 35, 44, 45.
A pair of L-shaped gripping claws 54 are pivotally supported via pins 55 on a support 53 fixed to 1.41.
have one end 54a engaged in a groove 52a at the tip of the actuating rod 52, and open and close with each other as the actuating rod 52 moves forward and backward. Two sets of rods 52 are provided. The base plate 31.41 is provided with a gripping cylinder 58 which is located between the reactivation rods 52 and has an axis parallel thereto, and both ends of the interlocking member 51 fixed to the tip of the piston rod are connected via springs 56. Each actuating rod 5
When the zero gripping cylinder 58 connected to the rear of the workpiece 2 operates in the contraction direction, each operating loft 52 moves forward, the gripping claws 54 open, and the workpiece W can be attached to and detached from the supports 34.35° and 44.45°. When the gripping cylinder 58 operates in the extending direction, each operating rod 52 retreats, the gripping claws 54 close, and the workpiece W positioned on the support column 34, 35, 44° 45
It is used to grasp the middle part of the In the gripping state, as is clear from FIG. 4, the gripping force of the gripping claws 54 is provided by the elastic force of the spring 56. Working fluid is supplied to each of the gripping cylinders 58 through the distributor 23 and the passage of the circuit, similarly to the advancing/retracting cylinders 28 .

Next, the rotating body 20 is rotated to create a three-dimensional structure having a phase difference of 90 degrees.
The indexing device 6o for positioning will be explained mainly with reference to FIGS. 2 and 5. One shaft portion 2 of the rotating body 20
A pinion 62 is integrally provided at the tip of the pinion 1, and a casing 61 with an indexing cylinder 63 surrounding it is fixed to the outer frame 13, and within the indexing cylinder 63 is a rank that meshes with the pinion 62. A plunger 64 having teeth 64a is fitted therein. If the plunger 64 is stroked completely by alternately supplying working fluid to both chambers of the indexing cylinder 63, the rotating body 2o will reciprocate within a range slightly exceeding 180 degrees. This reciprocating rotation of the rotating body 20 is caused by the shaft portion 2
A phase difference of 90 degrees is achieved by a stopper 70a provided on the swing lever 66 and two stoppers 70b and 70c provided on the bracket 6° fixed to the outer frame 13. It is positioned in 3 positions with . A swinging lever 66 rotatably supported by a support pin 67 fixed to the outer frame 13 has a protrusion 66a at one end coupled to a tip member 68a of a piston rond of a switching cylinder 68 supported by the outer frame 13. When the switching cylinder 68 expands and contracts, the stopper 70a is brought into contact with the contact surface 6 of the stopper cam 6.
It swings between a lower position (see FIG. 5) where it can make contact with 5a and an upper position where this contact does not take place.

As shown in FIG. 5, the swing lever 66 is in the lower position,
When the rotating body 2o is indexed to the standby position where the contact surface 65a of the Stomba Camro 5 contacts the stopper 70a, the first support member 30 is indexed to the conveyor 11 side as shown in FIGS. 1 and 4. The second support member 40 is taken out and indexed toward the processing machine 15 side. From this state, the piston rod of the switching cylinder 68 is retracted to bring the swinging lever 66 to the upper position, and when working fluid is supplied to the right chamber of the indexing cylinder 63 shown in FIG. 5, the rotating body 20 is rotated counterclockwise. The contact surface 65a of the stopper cam 65 contacts the stopper 70.
b and is indexed to the carry-in position. In this state, the first support member 30 is indexed toward the processing machine 15, and the second support member 40 is at the upper position shown at 40A in FIG. In this state, if the working fluid is supplied to the left chamber of the indexing cylinder 63, the rotating body 20 will rotate in the clockwise direction, and the contact surface 65b of the stopper cam 65 will contact the stopper 70c and be moved to the unloading position. Served. In this state, the second support member 4
0 is indexed toward the conveyor 11 side, and the first support member 30 is at the left position indicated by 3OA in FIG. From this state, if the piston rod of the switching cylinder 68 is extended to bring the swing lever 66 to the lower position and the working fluid is supplied to the right chamber of the indexing cylinder 63, the rotating body 20 will rotate counterclockwise. , the contact surface 65a of the stopper cam 65 is the stopper 70a.
, and returns to the first-mentioned standby position.

Next, the operation of the above embodiment will be explained with reference to the operation process diagram shown in FIG.

Workpiece W supported by support jig 19 of workpiece mount 18
When the workpiece is being processed by the processing machine 15, the workpiece loading/unloading is at the standby position shown by solid lines in FIGS. 1 and 4. When the processing of the workpiece W by the processing machine 15 is completed, first, the advancement/retraction drive device 24 is activated to move both support members 30.4.
0 moves forward.

Each gripping device 50 operates at each forward end, the first support member 30 grips and receives two unprocessed workpieces W stopped at a predetermined position on the conveyor 11, and the second support member 40 After gripping and receiving the two machined workpieces W supported by the support jig 19 of the workpiece mount 18, the advance/retreat drive device 24 is activated and both the support members 30, 40 are moved backward. Next, the indexing device 60 is operated to index the rotating body 20 to the loading position, and then the advance/retreat drive device 24 is operated to advance both support members 30, 40. As a result, the first support member 3
The two unprocessed workpieces W held by the support jig 19
After the support jig 19 supports the art work W, the grip device 50 of the first support member 30 releases the grip, the support members 30 and 40 move back and forth, and the processing machine 15 supports the workpiece W. Machining of the workpiece W supported by the jig 19 is started. Next, the indexing device 60 operates to index the rotating body 20 to the unloading position, and both support members 30 and 40 move forward to move the second support member 4
The two machined workpieces W gripped by the conveyor 11
After being placed on top, the gripping device 50 of the second support member 40 releases its grip, and both support members 30, 40 move back, leaving the artwork W on the conveyor 11. Next, the indexing device 60 operates to index the rotating body 20 to the standby position, and then the conveyor 11 operates to send the two processed workpieces W to the next process, and transfer the two unprocessed workpieces to the next process. W is sent in and the workpiece is stopped at a predetermined position determined by the pawl 12. As described above, one cycle of workpiece loading/unloading is completed, and each time the processing of the workpiece W by the processing machine 15 is completed, the above-described cycle of workpiece loading/unloading is repeated.

In addition, in the above embodiment, the first and second support devices 3
0 and 40 are provided in common to both support devices 30.40, but each support device 30.40 is provided with an independent advance/retraction drive device,
The first support device 30 may operate to grip the unprocessed workpiece W on the conveyor 11 while the workpiece W is being processed.

[Brief explanation of the drawing]

Figures 1 to 6 show an embodiment of the workpiece loading/unloading device according to the present invention, Figure 1 is an overall side view including a part of the processing machine, and Figure 2 is a partially cutaway front view of the main part. Figure 3 is a cross-sectional view taken along line mm in Figure 2, Figure 4 is a cross-sectional view taken along line IV-IV in Figure 2,
Fig. 5 is a V-V sectional view of Fig. 2, Fig. 6 is an operation process diagram,
FIG. 7 is a perspective view schematically showing an example of the prior art. Explanation of symbols 11... Conveyor, 13... Outer frame, 15... Processing machine, 20... Rotating body, 30... First support member, 40
...Second support member, 50...Gripping device, 60...
Indexing device, W...workpiece.

Claims (1)

[Claims] In a workpiece loading/unloading device that transports an unprocessed workpiece into a processing machine and transports a processed workpiece out of the processing machine, the workpiece is supported and placed in front of the processing machine. a conveyor conveying in parallel; a rotating body located above the conveyor and in front of the processing machine and supported by an outer frame so as to be rotatable around an axis parallel to the conveyance direction of the conveyor;
First and second support members are provided on the rotating body to be movable in directions perpendicular to the axis and have a phase difference of 90 degrees from each other, and are driven forward and backward by a predetermined distance, respectively; a gripping device that is provided on each member and that grips the workpiece in a removable manner;
an indexing device for positioning at three positions having a phase difference of 100 degrees; the first and second supporting devices transfer the workpiece between the conveyor and the processing machine via the gripping device; A workpiece loading/unloading device characterized by carrying out the following.