JPH028117A - Sense-changing conveyor - Google Patents

Abstract

PURPOSE:To aim at automation for sheet conveyance by mounting a crosspiece- cum-table on a truck capable of reciprocation between a feed position and a carry-out position, installing a rotational means on this truck, while rotating the crosspiece-cum-table as far as the specified angle, and taking out a sheet to the carry-out position. CONSTITUTION:When a sheet 2 is stacked on a crosspiece-cum-table 19 mounted on a truck 10 at a feed position, a lifter 23 is lifted up, the crosspiece-cum-table 19 is separated from the truck 10 together with a turntable 29 which is rotated as far as 90 degrees, and thereby the lifter 23 is lowered, so that the table 19 is put back on the truck 10. Then, the truck 10 is conveyed to a carry-out position B, a push table 48 is lifted up and the crosspiece-cum-table 19 is uplifted on the truck. A fork part of a conveyor advanced to the carry-out position is inserted into space between crosspiece members at the underside of the sheet 2, and the push table 48 is lowered so that the sheet 2 is delivered to the fork part. A sense of the sheet 2 is made so as to be fed to the next device as it is by rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a carrying-out device that changes the direction of a conveyed object and carries it out without using a pallet.

<Prior Art> Automobile bodies, particularly monocoque-type bodies, are formed by welding together a large number of sheet metal panels. usually,
These sheet metal panels are first cut from coils into panel materials with a shape corresponding to each sheet metal panel, and these panel materials (sheet materials) are passed through a transfer press line to be processed into sheet metal panels with a predetermined shape.

As is well known, in press working, the time required to replace a press die is one of the factors that greatly influences the operating rate of the press equipment.

For this reason, when considering the followability of a press line to an automobile assembly line, a pair of press dies are used to press several hundred to 1,000 pieces of panel material, and this work is sequentially performed on all press dies. There is no choice but to adopt a production system in which each sheet metal panel is temporarily stored in a stockyard and then supplied to the assembly line as needed.

The same situation applies to sheet materials that are subjected to press processing. Several hundred to 1,000 sheet materials are punched out from coils and temporarily stored in a stockyard □ in preparation for the pressing process. I try to leave it there.

By the way, when supplying a sheet material to a press machine, the direction of the sheet material must match the direction of the mold.

Therefore, conventionally, the orientation of sheet materials is changed in advance when they are stored in a stockyard.

Conventionally, this has been handled by changing the orientation of the pallet that receives the sheet material extracted from the blanking press, returning the pallet to its original orientation, and transporting and storing the sheet material together with the pallet. In other words, with the pallet returned to its original orientation, the sheet material was oriented in the same direction as when it was fed to the press machine.

<Problem to be solved by the invention> Recently, efforts have been made to automate a series of operations such as punching sheet materials from coils and pressing sheet materials.
To achieve this, it is desired to eliminate the above-mentioned pallet work that requires manual labor. However, if pallet work is omitted, the sheet material must be reoriented at another location or by another method.

In view of these circumstances, the present invention has been made with the intention of conveying objects such as sheet materials by changing the direction of the conveyed objects without using pallets.

Means for Solving the Problems> In order to solve the above problems, the present invention provides a trolley that can reciprocate between a supply position and an unloading position of the transported object, and has a plurality of surfaces on which the transported object is placed. providing a cross-shaped table formed by parallel cross members on the trolley;
The conveying device is constructed by providing a rotating means for driving and rotating the table with the plate on the cart or separately from the cart.

Function> In the above-mentioned conveyance device, the table with the grips is rotated at a predetermined angle by the rotation means and receives the object to be transported, and then the table with the grips is returned to its original state and moved to the carry-out position together with the cart.

At the unloading position, a fork or the like is inserted between the gripping members of the gripped table, and only the object to be transported is picked up.

Embodiment Fig. 1 shows a schematic perspective view of an embodiment in which a conveying device according to the present invention is applied to piling conveyance of sheet material, and Fig. 2 shows a partial cross-section of the embodiment device. The side view, FIG. 3 shows its plane, and FIG. 4 shows the view from the IV-11i' arrow in FIG. 3. FIG. This is an indication.

A sheet material (also called a blank material) 2 of a predetermined shape is punched out by a blanking press 1 from the strip material unwound from the coil, and the punched sheet material 2 is conveyed by a run-out conveyor 3 to the terminal end of the run-out conveyor 3. Please send it to Prime Conveyor 4.

The prime conveyor 4 has a large number of magnets 5, and the sheet material 2 is attracted and conveyed by the magnets 5.

Two pairs of transfer rails 6 are provided below the prime conveyor 4 and are perpendicular to the conveying direction of the prime conveyor 4. The rail 6 is ffi mounted on a frame 8 constructed within the pit 7. The lower side of the prime conveyor 4 of these rails 6 is the supply side of the sheet material 2, and the other end side is the delivery side.

The redirection conveyance@place 9 according to the embodiment is constructed by using each rail 6 as one constituent member.

On the rail 6 there are wheels 11 with carts 10 provided on the front and rear.
I'm riding with a 12. The front end side of the trolley 10 (second and third
A geared motor 13 is mounted on the geared motor 13 (the right side is the front end side when viewed from the figure), and a chain 16 that is hooked around a sprocket 15 provided on the rotating shaft 14 is connected to the wheel 1.
It is hung on the sprocket 18 on the shaft 17 of No. 2. Therefore, the trolley 10 is moved back and forth on the rail 6 by the operation of the guard motor 13.

A table 19 with a slot is mounted on the truck 10 so as to be separable from the truck 1o. The sandwiched table 19 has a structure in which a large number of sandwiched members 21 are fixedly arranged in parallel on a base member 2o at predetermined intervals. San member 2
The surface 21a of the sheet material 2 becomes the surface on which the sheet material 2 is rolled. Therefore, the surface on which the sheet material 2 is placed is not a continuous plane, but an uneven surface. Since a fork portion of a stacker crane or the like is inserted between the sandwich members 21 as will be described later, the spacing between the sandwich members 21 is such that the fork can fit therein.

Further, a plurality of seats 22 are provided on the back surface of the base member 2o.

A filler lid 23 is installed inside the bit 7 below the prime conveyor 4.

A support stand 25 is provided on the upper surface of the elevating table 24 of the lifter 23 which is raised and lowered by hydraulic pressure, etc., and the lid 2 is mounted on the support stand 25.
3 A plurality of support rollers 2 are arranged along the circumference around the center.
6 is rotatably supported. A central cylindrical shaft 27 concentric with the center of the lifter 23 is provided in the center of the support base 25. A circular rotary table 29 is mounted on the support roller 26 with its center portion fitted onto the central cylindrical shaft 27 via a bearing 28. A motor 30 with a speed reducer is attached to the support base 25, and a chain 32, which is attached to a sprocket 31 attached to the extending shaft of the motor 30, is passed around the outer peripheral surface of the rotary table 29 seven times and fastened. ing.

Therefore, due to the operation of the motor 30, the rotary table 2
9 is rotated on a support roller 26. The motor 3° is a reversible motor, and the rotary table 29 can be rotated in forward and reverse directions. In addition, in the figure, numeral 33 is an intermediate sprocket for changing the direction of the chain 32.

An L sprocket 34 is installed on the lower surface of the center side of the rotary table 29.
is integrally provided, and a chain 35 wound around this sprocket 34 is wound around a sprocket 37 provided on the input shaft of a reduction gear 36 provided on the support base 25. A gear 38 is attached to the output shaft of the i-reduction machine 36, and this gear 38 meshes with a gear 4o provided on the input shaft of a synchro oscillator (angle detection sensor) 390 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 top surface of the rotary table 29 in correspondence with the seats 22 on the back surface of the table 19.

A pair of magnets 42 are removably housed in the center of the table 19 with a counter, and a central cylindrical shaft 2 at the center of the rotary table 29 is placed on the lifting platform 24 of the crane lifter 23.
A cylinder 44 equipped with a push-up bar 43 passing through the shaft 7 is installed, and the extension of the cylinder 44 causes the push-up bar 4
3, the magnet 42 is pushed upward. When the first sheet material 2 is placed on the sandwiched table 19, the magnet 42 acts to prevent it from shifting laterally.

On the other hand, a push-up device [45] is installed inside the bit 7 on the unloading side of the transfer rail 6.

The push-up device 45 has a structure in which a push-up table 48 is provided above the piston rod of a hydraulic cylinder 47 for raising and lowering that is provided upward in the center of a pedestal 46 . In the figure, reference numeral 49 denotes a guide shaft coupled to the lower surface of the push-up table 48, which is inserted into a guide tube 50 provided on the side of the pedestal 46 so as to be slidable in the vertical direction.
Provides guidance when the push-up table 48 is raised and lowered.

Next, the redirection and feeding of the sheet material 2 by the redirection conveying device 9 will be described.

First, the cart 10 moves to the sheet material supply side end (
In the figure, it is moved to the position indicated by A), that is, below the prime conveyor 4.

Next, the lifting table 24 is raised by the lifting operation of the lifter 23, and the push-up seat 41 on the upper surface of the rotary table 29 hits the catch seat 22 on the lower surface of the table with a handle 19, so that the table with a handle 19 is raised. In a few seconds, the table 19 with a seat is separated from the cart 10.

After B, the sandwiched table 19 is rotated together with the rotary table 29 via the chain 32 by the operation of the motor 30. In this embodiment, it is rotated by 90 degrees. The rotation angle of the rotary table 29 is detected by a synchro oscillator 39, and the rotary table 29 and the seated table 19 are stopped after being correctly rotated by 90'. After the rotation, the lifter 23 is lowered and the table 19 with grooves is returned onto the cart 10.

In the above state, the sheet materials 2 brought by the prime conveyor 4 are supplied onto the sandwiched table 19, and a predetermined number of sheets are stacked. The -th sheet material 2 is placed on the sheet material 2 while being prevented from shifting laterally by the magnet 42 pushed up from below as described above. In addition, table 19 with a
There are stopper plates 51, 52.5 in front and on both sides of the
3 are located therein, and the sheet materials 2 are guided by these and stacked on the table 19, and are aligned by the back stopper 54.

When a predetermined number of sheet materials 2 are stacked on the sandwiched table 19, the sandwiched table 19 is returned to its original state by raising the lifter 23, rotating the rotary table 29 in the opposite direction, and lowering the lifter 23. As a result, the direction of the sheet material 2 on the table 19 with the groove is 90@
It can be changed.

Thereafter, the cart 10 is driven by the operation of the motor 13 and is moved to the unloading position on the rail 6 (position B in the figure).

At the unloading position, the push-up table 48 is driven by the push-up device 45.
As a result, the sheet materials 2 are piled up and the table 19 with a staff member is lifted from the cart 10.

In the above state, the fork portion 55 of a stacker crane or the like that has advanced to the unloading position is inserted between the clamping members 21 of the clamped table 19 below the sheet material 2, as shown in FIG.

After that, the push-up table 48 of the push-up device 45 is lowered, so that the sheet material 2 is passed onto the fork portion 55.

After this, the stacker crane moves and the sheet material 2 is stored in a rack in preparation for the next press process. Therefore,
The sheet material 2 pulled out from the rack during press processing is oriented so that it can be fed into the press machine as it is.

In the above embodiment, the blanking press is equipped with two conveying devices in order to eliminate time loss during punching, but of course it is also possible to use two conveying devices, or more than one conveying device can be arranged as necessary. It is also possible to do so.

Further, in the above embodiment, the table 19 with the groove is 90°
Although the sheet material 2 is rotated to receive the sheet material 2, the changing angle of the table 19 with a seat member 19 may be changed to other angles, and various settings can be made according to the shape of the object to be transported.

In the above embodiment, the trolley 1 is located below the sheet material supply position.
Rotating means such as a lid 232 and a rotating table 29 for rotating the table 19 with a person are provided separately from the rotating table 19, but the rotating means may be provided on the cart 10.

Furthermore, the objects to be conveyed in different directions are not limited to sheet materials.
It can be used for various things.

The drive system of the device is not limited to the one mentioned in the above embodiment, and various modifications may be made, such as using a gear mechanism to drive the rotary table 29, or using a traction method using a rope or the like to move the trolley 10. be.

<Effects of the Invention> According to the conveyance device for changing the direction of the conveyed object according to the present invention, since the direction of the conveyed object can be changed and carried out without using a pallet, automation of conveyance of the conveyed object can be achieved. Ru. Furthermore, since a pallet-less system is achieved by using a table with an A-shape, it is possible to reduce the storage space for objects to be transported in the height direction.

[Brief explanation of the drawing]

1 is a schematic perspective view of an embodiment of a conveyance device according to the present invention applied to piling conveyance of sheet material, FIG. 2 is a partially sectional side view of the embodiment device, and FIG. 3 is a plan view thereof. , FIG. 4 is a view taken along the line IV--IV in FIG. 3, and FIG. 5 is a schematic diagram from the press machine to the transport 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 redirection conveyor, 10 is a trolley, 19 is a table with scissors, 23 is a lifter, and 29 is a rotation The table, 45 is a push-up device, and 55 is a fork portion.

Claims (1)

[Claims] A cart is provided so as to be able to reciprocate between a supply position and an unloading position of the transported object, and a table with a slot on which the surface on which the transported object is placed is formed by a plurality of parallel slot members is provided on the trolley, A redirection conveying device characterized in that a rotating means for driving and rotating the table with a plate is provided on the cart or separately from the cart.