JPH02305716A - Sheet material lift up station device - Google Patents

Abstract

PURPOSE:To automize operation at the above device for a punch press, by using a suction pad type sheet material loader, and selecting these suction pads which are used for transport, according to a sheet material size which has been detected. CONSTITUTION:A mounting truck 14 mounted with a pallet 23 loaded with sheet materials 12 is adjoined to a floater unit 24, and a transfer member 3 is moved forward by means of a servo motor 8, and positioning pins 1 are butted to a sheet material end surface. A sheet material size is detected by inputting into a sheet material size detection means 37 through a pulse encorder the rotational angle of the servo motor 8 at this time. This sheet material size is inputted into a selection control circuit 36, and a changeover valve 35 is controlled, and the use range of vacuum pads 18 is set according to the sheet material size. As a result, operation can be automized, and the work of an operater is made unnecessary, and an operation mistake can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plate lifting station device used in a plate processing machine such as a punch press machine.

[Conventional technology]

For example, a board loading and conveying system is arranged around a board processing machine such as a punch press machine.

The board loading/transporting system is comprised of a loading section for raw board materials, a loading section for processed board materials, and a board loading and unloading device disposed between these and the punch press machine. Then, the plate material carrying-in device supplies the plate material from the raw material plate loading section onto the work table of the punch press machine, and the carrying-out device carries out the processed plate material from the work table to the processed plate material loading section.

The plate loading device (hereinafter referred to as a plate loader) is generally equipped with a vacuum mechanism or a magnet mechanism, and this feeds the plates one by one from the cart loaded with the raw plates to the punch press machine. It has become. For example, in a plate loader equipped with a vacuum mechanism,
A plurality of vacuum pads protrude downward from the frame body of the plate material loader, and each vacuum pad is connected to a vacuum system including a vacuum pump or the like.

[Problem to be solved by the invention]

In a plate loader having a vacuum mechanism as described above,
A plurality of vacuum pads are arranged at predetermined intervals. On the other hand, since plates of various sizes are supplied to punch press machines, it is necessary to select the vacuum pad to be used according to the size of the plate. In other words, when transporting large plates, connect all vacuum pads to the vacuum system, and when transporting small plates, do not suck air from the vacuum pads that do not come into contact with the plates. In this way, only the vacuum pad that comes into contact with the plate is connected to the vacuum system. Conventionally, selection of this pad is performed by manual input by an operator. With such a conventional method, the work becomes complicated, and there are cases where the plate material cannot be lifted successfully due to an erroneous operation.

The purpose of this invention is to automate the operation of a plate lifting station, thereby eliminating the need for the operator's work.
An object of the present invention is to provide a board lifting station device that can eliminate operational errors.

[Means to solve the problem]

A board lifting station device according to the present invention includes a board loader having a plurality of suction pads, board size detection means for detecting the size of a board to be transported, and suction pad selection means for selecting a suction pad to be used for transporting the board. It is equipped with the following. The plate loader transports the plate using some or all of the plurality of suction pads, and the suction pad selection means selects a suction pad to be used for conveying the plate based on the detection result of the plate size. Select a suction pad.

[Effect]

In this invention, for example, the size of the plate placed on the plate loading section is detected by the plate size detection means. This board size detection result is input to a suction pad selection means constituted by a system control unit of the board processing line. The suction pad selection means selects a suction pad to be used for conveying the plate material from among the plurality of suction pads provided on the plate material loader, and connects this suction pad to the suction source side.

In this way, the suction pad to be used is automatically selected depending on the size of the plate material, and no operation by the operator is required.

For example, when the suction pads are connected to a vacuum mechanism, a switching valve between each pad and the vacuum system is controlled according to the detection result of the plate size, and the suction pad to be used is selected according to the plate size.

〔Example〕

FIG. 3 is a schematic plan view of a plate processing line to which a plate lifting station device according to an embodiment of the present invention is applied;
The figure is a schematic view taken in the direction of the I arrow in FIG.

In this embodiment, a punch press machine is used as the plate processing machine.

In FIG. 3, a punch press machine 10 has a work table 11 and a carriage 13 for moving a plate material 12 on the work table 11 at its front part (hereinafter, the lower part in FIG. 3 is referred to as the front). There is.

On the left side of the punch press machine 10, a plate material loading cart 14 for loading raw material plates 12 is arranged.

This plate material loading cart 14 is movable on the rails 21 in the front and back direction. A carry-in device 15 for transporting the plate material 12 from the loading truck 14 onto the work table 11 is arranged above the loading truck 14 .

The loading device 15 is composed of a rail 16 that is continuously constructed above the plate material loading cart 14 and the punch press machine 10, and a loader 17 that is slidably attached to the rail 16 and runs by itself along the rail 16. ing. Loader 17
is a plurality of vacuum pads 1 arranged at predetermined intervals.
8 and a cylinder 19 for raising and lowering this vacuum pad 18.

As shown in FIG. 3, on the right side of the punch press machine 10, a conveyor 20 for loading processed plate materials 12 and a product table with a lifter are arranged. Further, above the stock conveyor 20, a carry-out device (not shown) for carrying out the processed plate material 12 from the work table 11 onto the stock conveyor 20 is arranged.

Next, details of the vicinity of the plate material loading cart 14 will be explained.

As shown in FIG. 2, the plate material loading truck 14 has wheels 22 that move on rails 21. As shown in FIG. This allows the plate material loading cart 14 to move in the front-rear direction (direction perpendicular to the plane of the paper). A pallet 23 is placed on the plate material loading cart 14, and a plurality of raw material plates 12 are stacked on this pallet 23. The pallet 23 is a frame-shaped member having openings in the front-rear and left-right directions.

As shown in FIG. 3, two positioning pins 1 and 2 are provided at the front and left side of the material plate 12, respectively, to prevent the plate 12 from collapsing. The positioning pins 1 and 2 are fixed to the movable members 3 and 4, respectively, and their side surfaces are in contact with two orthogonal sides of the material plate 12.

Pole nuts 5 are provided on the lower surfaces of the moving members 3 and 4, respectively.
a and 5b are provided.

On the other hand, a planar base plate 6 extending to the front and left side is fixed to the upper surface of the loading truck 14. A ball screw 7 is rotatably mounted on the front part of the base plate 6 in parallel with the rail 21.

The ball screw 7 is screwed into a ball nut 5a on the lower surface of the moving member 3, one end of which is connected to a servo motor 8, and the other end supported by a bearing 9.

Further, guide rails 30 are formed on both left and right sides of the ball screw 7, and the moving member 3 can move in the front and back direction along the guide rails 30. A similar mechanism is provided on the left side of the base plate 6, and a ball screw 31 is arranged in a direction perpendicular to the ball screw 7 to be screwed into a pole nut 5b on the lower surface of the moving member 4. One end of this ball screw 31 is connected to a servo motor 32, and the other end is supported by a bearing 34. A guide rail 33 is provided on the side of the ball screw 31.
is provided, and the moving member 4 follows this guide rail 33.
It is designed to be able to move left and right along the .

In addition, in front of the plate material loading cart 14, there is a plate material loading cart 14.
A floater unit 24 is arranged adjacent to.

FIG. 1 shows a control block diagram according to an embodiment of the present invention. As shown in FIG. 1, two boat switching valves 35 with electromagnetic valves are provided between each vacuum pad 18 provided on the loader 17 and the vacuum system. The solenoid valve of this switching valve 35 is connected to the selection control circuit 3.
It is turned on and off by the control signal J from 6. The selection control circuit 36 switches and controls each switching valve 35 according to the detection result of the plate material size detection means 37. Board size detection means 37
The plate size is detected by receiving the output of a pulse encoder which detects the amount of movement of the positioning pins 1 and 2 from the initial position shown in FIG. 3, that is, the rotation angle of the servo motors 8 and 32. Note that the selection control circuit 36 and the plate size detection means are configured by, for example, the system-based JR department of the plate processing line.

Next, the operation will be explained.

First, in FIG. 3, the loading truck 14 is placed at the rear position indicated by the two-dot chain line, and the pallet 23 on which the raw material plates 12 are stacked is placed on the loading truck 14.

Next, the loading truck 14 is moved forward and placed adjacent to the floater unit 24.

Next, the servo motor 8 is rotated, the ball screw 7 is rotated, and the moving member 3 is moved forward, so that the two positioning pins 1 are brought into contact with the end surface of the plate material 12. Note that the moving member 3 is normally located at a preset initial position. At this time, the output of the pulse encoder corresponding to the rotation angle of the servo motor 8 is input to the plate size detection means 37, and in this plate size detection means 37, the moving member 3
The amount of movement from the initial position is detected, and the size of the plate material 12 in the front-rear direction is calculated. Similarly, the servo motor 32
is rotated to move the moving member 4 to the right, and the positioning pin 2 is brought into contact with the left end surface of the plate work 2. By detecting the amount of movement of the moving member 4 at this time, the size of the plate material 12 in the left-right direction is detected.

When the size of the plate material 12 is detected in this manner, the size detection result is input to the selection control circuit 36. The selection control circuit 36 outputs a control signal to each switching valve 35 based on the detection result of the plate material size. For example, when the board is large and the vacuum pad is used all day long to lift the board, turn off the solenoid valves so that all the switching valves 35 are in the B position. In addition, when the board size is small and a part of the vacuum pad is used, the suction pad 18 corresponding to the board size is connected to the vacuum system.
The switching valves 35 corresponding to the pads 18 are set to the B position, and the switching valves 35 of the other pads 18 are set to the A position, so that the solenoid valves are turned on.

In this way, the selected predetermined vacuum pad 1
8 holds the plate material 12 under suction and carries it onto the work table 11 of the punch press machine 10.

The punch press machine 10 performs processing similar to conventional processing. The plate material 12 that has been processed is transported to the stock conveyor 20 by a transport device (not shown).

As described above, in this embodiment, the size of the plate material is detected and the vacuum pad is automatically selected based on the detection result, thereby eliminating the need for any operation by the operator and eliminating operational errors.

[Other Examples]

(a) In the embodiment described above, the plate size is detected by the amount of movement of the positioning pin, but the means for detecting the plate size is not limited to this.

For example, the size of the plate material may be detected using a limit switch, a photoelectric switch, or the like.

(b) In the above embodiment, the size of the board was determined by detecting the size of the board in two directions, but when using a standard board, only the size of either the front or back or the left or right side is detected, The size of the plate material may also be determined.

(C) In the embodiments described above, the present invention was applied to a device that lifts a plate using a vacuum mechanism, but the present invention can also be applied to a device that lifts a plate using a magnet mechanism. In this case, the electromagnet provided corresponding to each pad may be controlled to be turned on or off depending on the board size detection result.

(Effects of the Invention) According to the present invention, the board size is detected and the suction pad is automatically selected according to the detection result, so there is no need for operator operations at the board lifting station. In addition to simplifying the work, it is possible to prevent operational errors and the like and to reliably transport the plate materials.

[Brief explanation of drawings]

FIG. 1 is a control block diagram of a plate lifting station device according to an embodiment of the present invention, FIG. 2 is a partial front view of a processing line to which the plate lifting station device is applied, and FIG. 3 is a schematic plan view thereof. . 1.2... Positioning pin, 3, 4... Moving member, 5
a, 5b... pole nut, 6... base + L7.
31...Pole screw, 8.32...Servo motor,
12... Plate material, 18... Suction pad, 35... Switching valve, 36... Selection control circuit, 37... Plate material size detection means.

Claims (1)

[Claims] (1) A plate loader that has a plurality of suction pads and uses some or all of the plurality of suction pads to transport a plate; a plate size detection means that detects the size of the plate to be transported; A board lifting station device comprising: suction pad selection means for selecting a suction pad to be used for conveying the board based on the detection result of the board size detection means.