JPH07100528B2 - Reversing transport device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a transfer device that changes the direction of a transferred object and carries it out without using a pallet.

<Prior Art> A car body, especially a monocoque car body is formed by welding a large number of sheet metal panels to each other. Normal,
These sheet metal panels are first cut from a coil into a panel material having a shape corresponding to each sheet metal panel, and the panel material (sheet material) is passed through a transfer press line to be processed into a sheet metal panel having a predetermined shape.

As is well known, in press working, the time required for exchanging the press die is one of the factors that greatly affect the operating rate of the press equipment. Therefore, when considering the followability of the press line to the automobile assembly line, several hundred to 1,000 panel materials are pressed with a pair of press dies, and this work is sequentially performed for all press dies. There is no choice but to take a production form in which each sheet metal panel is temporarily stored in a stockyard and supplied to the assembly line side as needed.

This situation also applies to the sheet material used for press work, in which hundreds to 1,000 sheets of sheet material are punched out from the coil and temporarily stored in the stockyard in preparation for the pressing process. ing.

By the way, when supplying the sheet material to the press machine, the orientation of the sheet material must match the orientation of the mold.
Therefore, conventionally, when the sheet material is stored in the stockyard, the orientation is changed in advance.

Conventionally, the direction of the pallet that receives the sheet material extracted from the blanking press is changed, the orientation of the pallet is returned to the original state, and the sheet material is conveyed and stored together with the pallet. In other words, the orientation of the sheet material is set to the orientation when the sheet material is supplied to the press machine with the orientation of the pallet returned to the original state.

<Problems to be Solved by the Invention> Recently, it has been attempted to automate a series of operations such as punching a sheet material from a coil and pressing a sheet material.
In order to realize this, it is desired to omit the aforementioned pallet work that requires manual work. However, if the pallet work is omitted, the sheet material must be turned in another place or in another method.

In view of the above circumstances, the present invention has been made with the intention of transporting an object to be transported such as a sheet material by changing its direction without using a pallet.

<Means for Solving the Problems> In order to solve the above problems, in the present invention, a frame extending horizontally from a supply position of an object to be carried out to a carry-out position, and movably provided on the frame, A trolley that is stopped at the supply position and the unloading position, a corrugated table on which the surface on which the transported object is placed is formed by a plurality of parallel corrugated members, and the corrugated table is mounted on the trolley, and above the supply position. A conveyor that is provided above the corrugated table located at the same supply position and that carries in an object to be conveyed; a lifter that is installed below the frame at the supply position and is driven up and down; and a lifter that is provided on the lifter. , The lifter drive lifts the lifter to separate the lifted table from the carriage, and the lifted table is rotated. And a rotation drive means for rotating the carriage before it is remounted on the carriage.

<Operation> In the above-described transfer device, the rotary drive means rotates the corrugated table at a predetermined angle to receive the object to be transferred, and then the corrugated table is returned to its original state and moved to the carry-out position together with the carriage. At the carry-out position, a fork or the like is inserted between the corrugated members of the corrugated table to receive only the transported object.

<Examples> Fig. 1 shows a schematic perspective view of an example in which the conveying device according to the present invention is applied to piling and conveying a sheet material, and Fig. 2 shows a partial cross section of the example device. A side view, FIG. 3 shows the plan view, FIG. 4 shows a view taken along the line IV-IV in FIG. 3, and FIG. 5 shows an outline from a press machine for punching a sheet material to the conveying device. There is.

A sheet material (also called a blank material) 2 having a predetermined shape is punched by a blanking press 1 from a strip material unwound from the coil, and the punched sheet material 2 is conveyed by a runout conveyor 3 and a runout conveyor 3
It is conveyed by the prime conveyor 4 from the end portion of the.

The prime conveyor 4 has many magnets 5, and the sheet material 2 is attracted by the magnets 5 and conveyed.

Two pairs of transfer rails 6 are provided below the prime conveyor 4 so as to be orthogonal to the carrying direction of the prime conveyor 4. The rail 6 is laid on a frame 8 built in the pit 7. The lower side of these rails 6 of the prime conveyor 4 is the supply side of the sheet material 2, and the other end side is the carry-out side.

For each rail 6, the direction-changing and conveying device 9 according to the embodiment is configured by using each rail 6 as one constituent member.

A truck 10 is mounted on the rail 6 with wheels 11 and 12 provided at the front and rear. A geared motor 13 is mounted on the front end side of the trolley 10 (the right side as viewed in FIGS. 2 and 3 is the front end side), and a sprocket 15 provided on its rotation shaft 14
A chain 16 is attached to a sprocket 18 on a shaft 17 of a wheel 11 which spans the shaft. Therefore, the carriage 10 is reciprocated on the rail 6 by the operation of the geared motor 13.

Table with trolley 10 can be separated from trolley 10
19 is mounted. The corrugated table 19 has a structure in which a large number of corrugated members 21 are fixedly arranged in parallel on a base member 20 at predetermined intervals. The surface 21a of the third member 21 becomes the surface on which the sheet material 2 is placed. Therefore, the sheet material 2
The surface on which is placed is not a continuous flat surface but an uneven surface. Since a fork part such as a stacker crane is inserted between the corrugated members 21 as described later, the fork can be inserted in the space between the corrugated members 21. Further, a plurality of seats 22 are provided on the back surface of the base member 20.

A lifter 23 is installed in the pit 7 below the prime conveyor 4. A support table 25 is provided on the upper surface of the lift table 24 of the lifter 23 that is lifted and lowered by hydraulic pressure, etc., and a plurality of support rollers 26 are rotatable on the support table 25 along a circumference centered on the center of the lifter 23. Supported by. Support
A central cylinder shaft 27 concentric with the center of the lifter 23 is provided at the center of 25. A circular rotary table 29 is placed on the support roller 26 with the central portion fitted to the central cylindrical shaft 27 via a bearing 28. A motor 30 with a speed reducer is attached to the support base 25.
Is attached, and a chain 32 hung on a sprocket 31 attached to its output shaft is laid around and fastened to the outer peripheral surface of the rotary table 29. Therefore,
The rotary table 29 is supported by the support roller 26 by the operation of the motor 30.
Rotated on. The motor 30 is a reversible motor, and the rotary table 29 is normally and reversely rotated. In the figure, 33 is a chain 32
It is an intermediate sprocket for changing the direction of.

A sprocket 34 is integrally provided on the lower surface on the center side of the rotary table 29, and a chain 35 wound around the sprocket 34 is a sprocket 37 provided on an input shaft of a speed reducer 36 provided on a support 25. Is wound around. A gear 38 is attached to the output shaft of the speed reducer 36.
Engages with a gear 40 provided on an input shaft of a synchro oscillator (angle detection sensor) 39 provided on the support base 25. Therefore, when the rotary table 29 is rotated, the angle is detected by the synchro oscillator 39.

A plurality of push-up seats 41 are provided on the upper surface of the rotary table 29 so as to correspond to the receiving seats 22 on the back surface of the sandwiched table 19.

In addition, a pair of magnets 42 are stored in the center of the table 19 with a holder so that the magnets 42 can be put in and taken out, and on the lift table 24 of the lifter 23, a push-up rod 43 that penetrates the central cylindrical shaft 27 of the center of the rotary table 29. Cylinder 44 equipped with
By the extension operation of 44, the magnet is pushed by the push-up bar 43.
42 is pushed upward. magnet
When the first sheet material 2 is placed on the table 19 with a sandwich, it serves to prevent the lateral displacement.

On the other hand, a push-up device 45 is installed in the pit 7 on the carry-out side of the transfer rail 6. The push-up device 45 has a configuration in which a push-up base 48 is provided above a piston rod of a hydraulic cylinder 47 for raising and lowering provided in a central portion of a pedestal 46 so as to face upward. In the figure, reference numeral 49 denotes a guide shaft coupled to the lower surface of the push-up base 48, which is slidably inserted in a guide cylinder 50 provided on the pedestal 46 side in the vertical direction, and guides the lift-up base 48 when moving up and down.

Next, the direction-changing conveyance of the sheet material 2 by the direction-changing conveyance device 9 will be described.

First, the carriage 10 is moved to the sheet material supply side end of the transfer rail 6 (the position indicated by A in the figure), that is, below the prime conveyor 4.

Next, the lifting operation of the lifter 23 raises the lifting table 24, and the push-up seat 41 on the upper surface of the rotary table 29 hits the receiving seat 22 on the lower surface of the holding table 19 to raise the holding table 19. That is, the table 19 with a table is separated from the carriage 10.

After that, the operation of the motor 30 causes the rotary table 29 and the corrugated table 19 to rotate via the chain 32. In this embodiment, it is rotated 90 °. The rotation angle of the rotary table 29 is detected by the synchro oscillator 39, and the rotary table 29 and the table 19 with the pendant are correctly stopped by 90 °. After the rotation, the lifter 23 descends and the table 19 with a handle is returned onto the carriage 10.

In the above state, the sheet materials 2 carried by the prime conveyor 4 are supplied onto the table 19 with a corrugated sheet, and a predetermined number of sheets are stacked. The first sheet material 2 is placed while the lateral displacement is prevented by the magnet 42 pushed up from below as described above. Note that stopper plates 51, 52, 53 are located in front of and on both sides of the table 3 with a table, and the sheet materials 2 are stacked on the table 19 with a table while being guided by the back stoppers 54. To be

When a predetermined number of sheet materials 2 are stacked on the table 19 with a table, the rotary table 29 rotates in the opposite direction to the above, and the lifter
When the table 23 is lowered, the table 19 with the table is returned to its original state. As a result, the direction of the sheet material 2 on the table 19 with the table can be changed by 90 °.

After that, the carriage 10 is driven by the operation of the motor 13 and is moved to the carry-out position (position B in the figure) on the rail 6.

At the carry-out position, the push-up device 45 is driven, and the push-up table 48 is used to stack the sheet materials 2 so that the table 19 with a handle is stacked.
Can be lifted from the top of the trolley 10.

In the above state, the fork 55 such as the stacker crane that has advanced to the carry-out position is inserted between the corrugated members 21 of the corrugated table 19 below the sheet material 2 as shown in FIG.

Then, after that, the push-up base 48 of the push-up device 45 is lowered to pass the sheet material 2 onto the fork portion 55.

After that, the sheet material 2 is accommodated in the rack by the movement of the stacker crane in preparation for press working in the next step. Therefore,
The sheet material 2 pulled out from the rack during the press working is oriented so that it can be sent to the press machine as it is.

In addition, in the above embodiment, in order to eliminate the time loss of punching by the blanking press, the one in which two transfer devices are provided is shown, but of course, one transfer device may be provided, or three or more transfer devices may be arranged as necessary. It is also possible.

Further, in the above-mentioned embodiment, the corrugated table 19 is rotated 90 ° to receive the sheet material 2, but the corrugated table 19 may be changed at other angles according to the shape of the transported object. Various settings are possible.

In the above-described embodiment, below the sheet material supply position, separately from the trolley 10, the lifter 23 for rotating the table 19 with the rotating member, the rotating means such as the rotating table 29 is provided.
The rotating means may be mounted on the carriage 10.

Furthermore, the target to be changed and conveyed is not limited to the sheet material,
It is possible to correspond to various things.

The drive system in the device is not limited to those given in the above embodiment, and for example, a gear mechanism is used to drive the rotary table 29, a pulling system such as a rope is used to move the carriage 10, and various changes can be made. is there.

<Effects of the Invention> According to the conveying device for changing the direction of the conveyed object according to the present invention, since it is possible to change the direction of the conveyed object and carry it out without using a pallet, automation of conveyance of the conveyed object is achieved. It Further, since the pallet-less is achieved by using the table with a corrugated table, it becomes possible to reduce the storage space of the transported object in the height direction.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an embodiment of a conveying device according to the present invention applied to piling and conveying sheet material, FIG. 2 is a side view showing a partial cross section of the embodiment device, and FIG. 3 is a plan view thereof. 4, FIG. 4 is a view taken along the line IV-IV in FIG. 3, and FIG. 5 is a schematic view from the press machine to the conveying device. In the drawing, 1 is a blanking press, 2 is a sheet material, 4 is a prime conveyor, 6 is a transfer rail, 9 is a direction changing and conveying device, 10 is a trolley, 19 is a lift table, 23 is a lifter, and 29 is a rotary table. , 45 is a push-up device, and 55 is a fork part.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiyoshi Fukushima 5-3-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (56) References JP 62-100317 (JP, A) Sho 61-72326 (JP, U)

Claims (1)

[Claims] 1. A frame extending horizontally from a supply position of an object to be conveyed to a carry-out position, a carriage provided on the frame so as to be movable, and stopped at the supply position and the carry-out position. The surface on which the transported object is placed is formed by a plurality of parallel corrugated members, and the corrugated table mounted on the carriage is provided above the corrugated table provided above the supply position and located at the supply position. A conveyer for carrying in an object to be conveyed, a lifter installed below the frame at the supply position and driven up and down, and a lifter provided on the lifter and lifted by being lifted by the lifter to be separated from the carriage. In addition to rotating the table with a handle, rotate the table with a handle after the object to be conveyed is lowered by the lifter and re-mounted on the carriage. Reorientation conveying apparatus characterized by comprising a rotary drive means.