JPS59187435A - Loader for lengthy article - Google Patents

Abstract

PURPOSE:To move articles in two positions simultaneously in the opposite direction to each other to interchange the articles in a half cycle time by changing over the condition of two sets of arms between the pinching and releasing ones simultaneously with a separate drive device. CONSTITUTION:Support frames 6, 6 for a lengthy article loader 1 are constituted to be moved toward or away from each other by a first drive device 8 provided in a slide mechanism 7. First and second arms 11, 12 are supported on the frames 6, 6 while a pivotable drive mechanism 9 is provided to pivot the arms 11, 12 in the opposite direction to each other. A second drive device 10 is connectively interlocked with the drive mechanism 9 and the arms 11, 12 is provided on the free end side with a lengthy article A pinching device 13. The second drive device 10 is operated in the forward direction so that clamps 13 of the arms 11 pivot to both end sides of the lengthy article A on a conveyer and clamps 13 of the arms 12 pivot to both sides of said article on a mounting bed in the opposite direction to the arms 11, and the drive device 8 makes frames 6 approach each other to pinch the lengthy article.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a loader for long objects, specifically, for example, in a crankshaft manufacturing process, a rice-processed crankshaft conveyed by a conveyor (belt conveyor, etc.) is transferred to a conveyor H. For example, transfer and place the shaft on a mounting table (Yageno, etc.) near a processing device such as a lathe, or conversely, transfer and place the walled shaft on the north side of the I or 1 sound stand on the transfer device. [Related to a loader for long objects used for loading, etc.

As mentioned above, in order to transport a long object between two positions, the transport device and the mounting table near the processing device, conventionally, a conveyor type loader that can be driven forward and reverse is placed between the two positions, and the loader is placed above the transport device. The processed rice is transferred to the loader and transported to the mounting table side, and the processed product on the mounting table is transferred to the loader, and the rice processed product is placed on the empty mounting table. After that, the workpiece is transported to the transport device and placed on the transport device, which requires frequent work to reload the workpiece onto the loader, and the cycle time for exchanging two products is long. This is one of the reasons that hinders the improvement of work efficiency.

Furthermore, it is inconvenient that it is not possible to pass between the transport device and the mounting table, and the entire arrangement space is required to be large.

Therefore, the inventors provided a pair of arms that swing back and forth between the transport device and the mounting table so as to be able to freely move near and far from each other, so that the unprocessed workpiece on the transport device can be placed on the mounting table, or
LJ? j was uttered.

According to the above configuration, the loader can be installed in a narrow space,
In addition, it is 61f& to pass along the side, and has the advantage of eliminating the need to transfer articles to a loader, but there is still room for improvement in that the cycle time for exchanging two articles is long. was left behind.

As a result of further efforts, the wood inventors were able to shorten the cycle time and improve work efficiency, and they developed a loader for long objects with excellent functions. This is what we intend to provide.

Below is a crankshaft as an example of a long item! ! ! A sub-example of the present invention will be explained based on the drawings, taking as an example a loader installed in a part of a production line.

As shown in FIGS. 1 to 4, a long I snout loader 1
7. a conveyor 2 for conveying a long object A, an example of which is a crankshaft; It is placed between the mounted IC stand 3 near the llJ equipment 6.

This long object loader 1 is provided with a pair of rails 4, 4 on a base 5 along the conveyance direction of one item of the conveyor 2, and a pair of rails 4, 4 are installed on the base 5, and the horizontal force is transferred freely between the rails 4, 4 after the rails 4, 4. The support frame 6.6 of the pair is mounted, and the pair of support frames 6.
6 can be moved far away from each other (variably 4σJ) by the first drive device 8 provided in the sliding mechanism 7.

Then, in each of the support frames 6.6, a first
The second arm 11.12 is supported with their axes parallel to each other, and each pair of the first and second arms IJ 11, 12.12 is rocked contrarily! A second drive unit 9 is provided on the support frame 6.6, and a second drive unit 10 is provided on the ILKdJ mechanism 9.
and furthermore, each pair of arms 11, 11, 12
．． 12, the supporting frame 6 is disposed on the free end side facing each other.
．． The gripping part 13 that grips the long object A as the object A approaches the object 6 relatively.
...is established.

Specifically, the sliding mechanism 7 has an air cylinder as an example of the first drive device 8 attached to the base 5, and a cylinder rod I and a rack 14 connected thereto.
A frame 15.15 is erected on both sides of the rack 14, and a pinio/]6 that engages the rack 14 is mounted on the frame 15.
．． racks 18 and 19 attached to the support shaft 17 spanning 15 and engaging the pinion 16 above and below;
are connected with pins to each of the support frames 6.6, and the floating prevention members 20.20 of the upper rank 18 and the support members 21.21 of the lower rack 19 are attached across the frames 15.15, Further, a steady rest member 22 for the rack 14 is provided so that its position can be freely adjusted by means of a bolt 23, so that when the cylinder 8 is extended 1161, the pair of support frames 6.6 are simultaneously moved to t1.
With this, each pair of gripping parts 13, 13 relatively approach to grip the long object A, and the contraction action of the cylinder 8 releases the grip on the long object A.
Each pair of gripping parts 13.13 are arranged to be spaced apart from each other.

Next, the swing #I drive device 9 attaches a guarded moke as an example of the second drive jiUJ device #0 to one of the support frames 6, and moves its deceleration output shaft 24 to the support frame transfer
The pair of support frames 6
．． A shaft 25 with a different diameter (a spline shaft, a serration shaft, or a type of serration shaft with a small number of teeth as shown in section 7 in Fig. 7) can be freely rotated relative to the frame 6. and intermediate gear G1
A gear G2 that engages the reduction drive gear G via the gear G2 is fitted with a different diameter into the different diameter 1i1h25, and a gear G3 having the number of teeth than the gear G2 is fitted with a different diameter on the other end side of the different diameter shaft 25. and these gears G2. Gear G that engages G3,
, G5 are fixed to each of the support shafts 26 and 26 to which the pair of first arms 11 and 11 are connected.

Further, each of the second arms 12.12 is supported by the AfJ different diameter shaft 25 via a different diameter fitting structure 27.27, and the fitting structure 27.27 is supported by each of the support frames 6.6. The second
With the IE reverse rotation of the first deceleration gear Iψj gear G by the drive device 10, each pair of first and second arms 11, 11, 1
2.12 swings oppositely, and the direction of the swinging force is reversed.

To configure the different diameter fitting @ structure 27, the λ, the diameter shaft 25
28.2 days of sieve body with two fludges fitted with different diameters,
The cylindrical body 28.28 is fitted into the boss 29 of the second arm 12 from both sides thereof, and the cylindrical body 28.28 is connected to the boss 29 by bolts, and a 1ζ°↓-shaped groove a is formed in the boss 29. , a cross-section crank-shaped member 3 that fits into this groove a.
The support frame 61 carries f1,30.

1. The long object gripping part 13 marked "J" is a cylindrical block whose part is cut out in a split circle so that the gripping part 13 reaches the predetermined position of the conveyor 2L and is flush with the conveyor L surface. In i3a, a forest-like recess iθ is also formed 13b, and the first and second arms 11 and 12 are attached to the member 31 by bolts that can be attached and detached.

LIQ+i is in the northern part of own jJAd frame 15.15.
A fixing support structure 32 is provided to restrain movement of the shaft 25 with different diameters in the axial direction.

This support structure 32 has a cylindrical body 33 fitted to a different diameter shaft 25 bolted to the shaft 25, bearings 34, 34 located on both sides of the body 33, and a 114h bearing 34,
34 is attached to the frame 15.15, and the bearing fastening part 1t-J part 36.36 is attached to the boss 3.
5 is connected with bolts.

Now, NO: first and second arms 11. The center of the long object A conveyed by the conveyor 2 and the center of the long object A on the mounting table 3 are located at the intersection points P and Q of the center locus of the gripping capital 13 when rotated around the parallel axis t2. The lengths of the first and second arms 11 and 12 are set such that the first and second arms 11 and 12 are positioned respectively, and the center of the gripping center of one of the first arms 11, for example, almost coincides with the center of the long object on the conveyor 2L. %
' is at position X, and the center of the gripping part of the other second arm 12 is in the second position
&Y, when the second driving device 10 reversely swings both arms 11 and 12 in the E direction, the center of the gripping portion of the first arm 11 is on the mounting table. so that the center of the long object and the center of the gripping part of the second arm 12 approximately coincide with the center of the long object of the conveyor, respectively.
Gear G2. The number of teeth of G and G3+G5 is set.

Furthermore, a cam 37 is provided at the shaft end of one of the first arm support shafts 26, and a limit switch Sll52+sol driven by the cam 37 is attached to a bracket 38 connected to the support frame 6. switch SI detects that the first arm 11 is in the first position MX, switch S3 detects that it is in the second device Y, and switch S2 detects that the first arm 11 is in the intermediate position Z. That's how it is.

Furthermore, by using the movement of one of the support frames 6, a pair of arms 1 and 11 are attached to the base 5.
11.12.12 is long (the first one with sword A 4 up and dried large
Switch S4 for detecting condition B and second condition C for release of pinching
．． S5 is provided.

Near the conveyor 2, a long object A is placed on the first arm 1.
1.11 When the long object A reaches the point where it is to be clamped, the cover of the long object A is reached! A stopper 39 is provided that forces the vJ conveyance to P%, and a switch S6 is provided that detects the long object A whose conveyance has been stopped by the stopper 39 and stops width cutting of the conveyor 2. .

The stopper 39 can freely swing between the closed position of the long object 1'P and the open position 1tE of stopping the work, and detects the two positions E. switch S7. S8 is provided.

An example of the operation of the loader 1 for long objects having the above-mentioned configuration is shown as a time chart in FIG. 5, and the operation of the loader 1 will be explained below based on this time chart.

It is in the second state C of release, the VJrJ stopper 39 is in the closed position, the conveyor 2 is conveying the unprocessed long object A, and the processed long object is on the north of the mounting table 3. A situation in which the scale object A exists will be described as an initial state.

■ First, the long object A is conveyed by the conveyor 2.
When the stopper 39 receives a stopping action, the switch S6 is activated simultaneously or slightly before this, and the conveyor 2 is accordingly stopped and the stopper 39 is switched to the open position E, and the switch S8 is activated. Operate.

(2) Then, the second drive device 10 rotates in the normal direction, and the gripping part 1'3.13 of the first arm 11.11 is placed on both ends of the long object A and the conveyor, and the grip part 1'3.13 of the second arm 12.12 is The gripping parts 13, 13 swing oppositely to each side of the long object A on the mounting table 5! It) jL, fil When the arm 11.11 reaches the first device X, the switch S1 is activated.

- Along with this, the second drive device 10 stops and the first #1jAIidJ device f&8 operates, and the pair of support frames 6.6 move toward each other, and the first arm gripping portion 1
3.13 is on the conveyor and the second arm gripping part 13
, 13 are used to hold a long object A, even if the long object A is slightly off-center with respect to the gripping part 13, it will be held in the center by the action of the 4th part 13b. It is possible to move closer to each other, and it is possible to reliably prevent it from falling by pulling it out at every turn.

■ When the switch S4 releases (☆) to clamp the long object A, the first drive device 8 stops, the second drive I device 10 operates in reverse, and the first and second arms 11.11.12.1
2 swings in the opposite direction to the above-mentioned (2), the unprocessed long article A is processed on the mounting table 3, and the cloth A is transferred to the conveyor 2.

During this period, the switch S2 detects the arm intermediate position iRZ, but this is electrically interlocked.

■ In accordance with the above ■, switch S3 is set to Koma i-arm 11.1.
When #1 @2nd @Y is detected, the second drive device 10 stops tJi, and the first drive/ψJ device 8 operates to separate the pair of support frames 6.6 relative to each other. The holding of the elongated object A by the gripping parts 13 of the two arms 11, 11, 12, 12 is released.

(ω When the switch S5 detects this second device C for releasing the pinch, the first drive device 8 stops, and the second drive device 10 again operates in the normal direction, and the first and second arms 11, 1
1, 12, and 12 both turn to the intermediate position Z and swing in contradistinction.

(When the V switch 52pi7-m intermediate position Z is detected, the device 8 of the first frame!1 is stopped and the conveyor 2 is driven again, and the processed long object A passes the stopper 39. The stopper 39 is opened after a delay of a set time (set by a timer, etc.) or after the passage is confirmed by a limit switch, etc.
is switched to the closed position, and this state is detected by switch S7.

This completes the cycle of transferring two articles to different locations.

Note that a switch S4 for detecting the relative close position of the pair of support frames 6.6, that is, the first position B of holding the long object, is
By providing the support frame so that its position can be changed and fixed in the moving direction, L-tR objects of different lengths can be held, or by replacing the grip t34≦13- with one of different length. In order to obtain the same function, at least in the latter case, the position of the stopper 39 should be changed to the counterclockwise side in the direction of conveyance, or only the gripping portions 13 and 13 on the five-hand side in the direction of conveyance should be changed in length. ni f
need to be changed.

FIG. 6 shows a modification of the loader 1. This one is base 5
The support columns 40.40 constituting the support column 40.40 are formed to be expandable and retractable, and the drive device 41.40 is configured to extend and contract the support columns 40.40.
41, @1 and second arms 11, 11.
12. The column 40 reversibly moves toward the intermediate position Z.
.

As described above, the loader for long objects according to the present invention is provided with a pair of support frames that are movable near and far from each other by a first drive device, and a shaft of different diameter driven by a second drive device that is connected to the pair of support frames. First and second arms are installed to be able to rotate and slide relative to the support frame, and are swung oppositely around axes parallel to each other in the direction of movement of the support frame as the different diameter shafts rotate. are supported by each of the pair of support frames, and each of the pair of first and second
The arm is characterized by being provided with a gripping portion on the free end side for gripping a long object as the support frame approaches relative to the other.

That is, one drive device (second) causes each pair of arms to swing 4 vJ simultaneously and in opposite directions, and another drive device (first) swings the two sets of arms. At the same time, it is possible to switch between clamping and unclamping, thereby making it possible to move objects in two different positions at the same time. While taking advantage of the advantages of the previously developed loader with a pair of arms, we have now been able to exchange items in half the cycle time compared to the previously developed loader, which has led to a significant improvement in work efficiency. be.

[Brief explanation of the drawing]

The drawings show an embodiment of the loader for long objects according to the present invention, in which Fig. 1 is a schematic front view, Fig. 2 is a side view of the same, Fig. 3 is a longitudinal sectional front view of the main part, and Figs. is 6t1 (≦side view, 5th is a time chart, and FIG. 6 is a front view of another embodiment. 6--Support frame, 8--First driving device, l
O-￥J2wA moving device, 11...first arm,
12...Second arm, 13.Gripping part, 25
Different diameter shaft, A, long item. Figure 1 Figure 2

Claims (1)

[Scope of Claims] (p) A pair of support frames are provided so as to be movable near and far from each other by a first drive device, and shafts of different diameters driven by a second drive device are rotated relative to the pair of support frames and Each of the pair of support frames includes a first arm and a second arm that are installed so as to be relatively slidable and swing oppositely around mutually parallel axes in the support frame movement direction as the different diameter shafts rotate. and the first of each pair.
A loader for a long object, characterized in that the second arm is provided with a gripping portion on the free end side thereof for holding the long object as the support frame approaches relative to each other. (2) The long object loader according to claim (2), further comprising a third drive device for raising and lowering the base relative to the pair of support arms.