JPH0211491B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for conveying sheet materials such as photosensitive materials, peel-off films, Kent paper, etc. onto the table of an automatic drafting machine.

The present applicant has already filed a patent application for a device for automatically feeding and discharging sheet materials into an automatic drafting machine, etc. (Japanese Patent Application No. 102369/1982).

However, recently, a puncher has been installed on the fixed frame that guides the table, and this puncher makes holes in the sheet material fed onto the table to facilitate the positioning of the sheet material to the next process equipment. An automatic drafting machine for making holes has been proposed. Its outline is as follows with reference to FIG.

Symbol A is an automatic drawing machine, and its table 1
A puncher 33 is provided on one side edge of the table 1, and a paper box 24 is arranged on the opposite side of the puncher 33 installation part. transport upwards.

In this proposed example, the puncher 33 is located on one side of the table 1, and the suction device 17 moves from the opposite side, and the suction device 17 is located at the leading end of the sheet material 23 in the conveyance direction. Therefore, near the end of the movement process of the suction device 17, the suction device 17 interferes with the puncher 33, preventing its movement, and there is a problem that the sheet material 23 cannot be conveyed to the required position. .

Moreover, in the automatic drafting machine with a puncher as described above, there is a requirement that the sheet material must be fed more than the part inserted into the puncher than in previous machines, and the above-mentioned problem is even more serious. It is becoming.

In order to avoid such problems, it is possible to suction the sheet material at a part far away from the tip, but if the suction part of the sheet material is too far away from the tip, the tip of the sheet material will droop and the puncher will The disadvantage is that it becomes even more difficult to insert the

Furthermore, if a mechanical insertion means is additionally provided as a countermeasure against this problem, the device becomes complicated and expensive.

An object of the present invention is to provide a method and apparatus for conveying sheet material to an automatic drafting machine that solves the above-mentioned problems, and will be described below based on embodiments shown in the accompanying drawings.

Reference numeral 1 denotes a table of a known automatic drafting machine A. A large number of vacuum suction holes 2 are bored in the upper surface of the table 1, and the table can be moved back and forth by an appropriate driving means (not shown). .

Support rods 4, 4 are installed on an immovable structural member 3 (the front structural member is not shown) facing in the left-right direction of the sheet material conveying device B of the present invention, which is installed close to the right side of the automatic drafting machine. A base plate 5 facing in the left-right direction is supported on the base plate 5.

A first spline shaft 6 oriented in the left-right direction is mounted on the base plate 5 with support fittings 7 , 7 located above the base plate 5 .

Bearings 9, 9 fixed to the right end of the upper surface of the first sliding plate 8 facing in the left-right direction below the first spline shaft 6 are slidably fitted to the first spline shaft 6. A second spline shaft 13, which is installed with support fittings 12, 12 on both ends of the upper surface of the second sliding plate 11 facing in the left-right direction below the bearing portions 10, 10, which are vertically disposed on the left end of the lower surface, is slidable. It is inserted freely.

A rack 14 parallel to the second spline shaft 13 is fixedly mounted on the front part of the upper surface of the second sliding plate 11, and the rack 14 meshes with a gear 16 of a motor 15 installed on the left end of the upper surface of the base plate 5. are doing. Therefore, the second sliding plate 11 is moved laterally by the motor 15 with a stroke close to its entire length without rotating.

A suction device 17 is attached to the left side of the second sliding plate 11, and a right suction head 18 and a left blow pipe 19, which are provided on the lower surface of the suction device 17 and both facing the front and rear directions, are attached to the upper surface of the suction device 17. By the motor 20 installed in
Go up and down at the same time.

A large number of suction cups 21 arranged in a row in the front-rear direction are attached to the lower surface of the suction head 18, and the air pipe 19 has
A large number of nozzles 2 are lined up in a row in the front-back direction, facing downward to the right, and having tips at the same height on the left side of the suction cup 21.
2 is provided.

As will be described later, each suction cup 21 is connected to a vacuum source (not shown) via a solenoid valve (not shown) that is sequentially closed from the front by a constant pressure switch (not shown), and the blower pipe 19 is connected to a solenoid valve (not shown) ) is connected to an air blowing source (not shown).

Below the above-mentioned device, there is a paper box 24 with an open top for storing unused paper 23 made of sheet material such as photosensitive material, peel-off film, Kent paper, etc., and a paper box 24 having almost the same shape and size as the paper box 24 and located on the lower right side. , a paper box 26 for storing drawn paper 25 is provided. Both paper boxes 24 and 26 can be pulled out forward, and the left end of the unused paper 23 is located below each suction cup 21.

Below each suction cup 21 on the bottom plate of the paper box 24, a ventilation hole 27 is provided which functions as will be described later.
Similarly, there are 2 unused sheets of paper to be stored at the left end and back end key points.
No. 3 positioning stoppers 28 are provided upright.

The top opening of the paper box 26 is normally covered with a guide plate 29 whose left portion bends toward the upper left and which also serves as a light shield.

A pair of racks 30 (the rear rack is not shown) attached to the front and rear ends of the lower right side of the guide plate 29 and facing left and right mesh with the gear 32 of the motor 31 (the rear gear is not shown). The guide plate 29 is the motor 3
1 moves it to the left.

The puncher 33 is a device for punching holes for positioning in the unused paper 23, and as shown in FIG. , a punch 35, a die 36, etc.

37 is a drawing head.

39 is a limit switch serving as a first detection device, which is provided on the base plate 5 and is connected to the suction device 17.
When it reaches a predetermined temporary placement position, it comes into contact with a protrusion 40 provided on the front surface of the rack 14 and is activated, stopping the suction of the suction cup 21 in the suction device 17 and releasing the fumes from the air blowing nozzle 22. The above-mentioned electromagnetic valves are operated and the motor 15 is reversed so that the motor 15 is stopped.

Reference numeral 41 denotes a limit switch constituting a second detection device, which is provided on the base plate 5 at a required distance from the limit switch 39 described above, and is connected to the suction device 17.
When it retreats by a predetermined distance from the above-mentioned temporary placement position, it comes into contact with the above-mentioned protrusion 40 and operates the solenoid valve for restarting the suction of the suction cup 21 in the suction device 17. , the motor 15 is rotated in the normal direction.

Incidentally, it is preferable that the attachment positions of these limit switches 39, 41 to the base plate 5 be adjustable.

In addition, in order to operate the entire device as described below, various detection devices are provided to control the operations of the motors 15, 20, 31, etc., but detailed explanations of these self-evident matters will be omitted. .

Next, the method of the present invention will be explained as well as the operation of the above-described apparatus.

As shown in FIG. 3, the apparatus in the state shown in FIG. and start adsorbing the paper 23.

At this time, the paper 23 is small and the front suction cup 21
However, if it is outside the paper 23, the degree of vacuum will not increase.

Then, the pressure switch detects this and closes the solenoid valves of the suction cups 21 that suck in a large amount of air from the front to stop the suction, and the paper 23 is sucked only by each suction cup 21 that is in contact with the paper 23. .

The ventilation holes 27 provided in the paper box 24 allow small sheets of paper 23 to be placed in decimal numbers, and the suction cups 21 that have descended and come off the paper 23 are directly attracted to the bottom plate of the paper box 24.
This is provided to prevent the degree of vacuum from increasing. Incidentally, in conjunction with the setting of the suction position of the suction cup, the sheet suction zone of the table of the automatic drafting machine may be automatically set.

When the vacuum level of the suction head 18 increases and the paper 23 is completely suctioned, the nozzle 22 of the air pipe 19
While blowing air onto the sides of a large number of stacked sheets of paper 23,
The motor 20 reverses, the suction device 17 rises,
Only the top 231 sheets of paper are picked up by the fumes.

Then, as shown in FIG. 4, the motor 15 is started, and when the suction device 17 is lowered, it moves leftward to near the upper left end of the table 1 of the automatic drafting machine within a range that does not hit the puncher 33, and removes the suctioned workpiece. Paper used 2
3 is transported above the table 1 while being kept almost horizontally by the jet flow from the nozzle 22. When the suction device 17 reaches the above-mentioned temporary position, the limit switch 39 is activated and the suction head 18 and the air blower are The tube 19 is lowered and the unused paper 23 is temporarily placed on the table 1.

At the same time or subsequently, as shown in FIG. 5, the motor 20 is reversed and the suction device 1
7 is raised, the motor 15 is reversed, and only the suction device 17 is moved backward.

The retreat distance is the unused paper 2 in the temporary position mentioned above.
Unused paper 23 at the front end position of 3 and inside the puncher 33
It is determined by adjusting the mounting positions of both limit switches 39 and 41 based on the final planned position where the front end of the limit switch enters.

When the suction device 17 is moved back by this distance and the limit switch 41 is activated, only the suction head 18 is lowered and the unused paper 23 is sucked again, as shown in FIG.
7 moves forward by a distance equal to the retreat distance, and the unused paper 23 is advanced along the table 1 until the leading edge of the unused paper 23 enters the puncher 33.

When the unused paper 23 reaches this final planned position,
For example, the limit switch 39 described above detects this and stops the suction action of the suction cup 21, and the suction head 18
, the motor 15 is reversed, and the suction device 1
7 to the initial position, vacuum suction is applied from the suction hole 2 of the table 1, and the unused paper 23
stick it on table 1.

Next, the table 1 is moved back and forth by the operation of the automatic drafting machine A side, and the puncher 33 punches holes at appropriate positions at the edges of the unused paper 23 for positioning the paper to the equipment for the next process. As is well known, drawing is performed on the unused paper 23 by the original operation of the automatic drawing machine A.

When the drawing is completed, the suction device 17 moves onto the table 1 as shown in FIG.
It moves to the upper left of the upper drawn paper 25, and the suction head 18 and the blower pipe 19 descend to start suction and blowing air. At this time, each suction cup 21 operates in the same way as when feeding the unused paper 23, so if the suction device 17 is slightly raised while blowing air from each suction hole 2 of the table 1, the drawn paper 23 The entire surface of is spaced apart from the table 1.

Next, as shown in FIG. 8, the suction device 17 moves to the right, the motor 31 is activated, the guide plate 29 moves to the right, the left part of the drawn paper box 26 opens, and the drawn paper is removed. 25 moves to the right while maintaining the state shown in FIG. 7, is guided by the guide plate 29, and is stored in the paper box 26.

When the suction device 17 is stopped at a predetermined position and the suction and air blowing are stopped, the drawn paper 25 falls into the paper box 26 and is stored therein.

As is clear from the above, when the sheet material conveying method and the device in the sheet material automatic feed/discharge device of the present invention are used in combination with an automatic drafting machine equipped with a puncher, unused paper is left on the table of the automatic drafting machine equipped with a puncher. After temporarily placing the paper, the suction device is moved back, the unused paper is adsorbed again, and the unused paper is moved forward along the table to set the front end of the unused paper inside the puncher. Therefore, there is no need to increase the size of the sheet material automatic feed/discharge device, and there is no possibility that the front end of unused paper cannot be inserted into the puncher.

Moreover, according to the present invention, it is possible to use almost the apparatus of the above-mentioned patent application as is, which is advantageous.

As a result of the above effects, it is possible to economically and efficiently use the automatic sheet material feeding and discharging device in combination with an automatic drafting machine with a puncher according to the present invention.

In the above-described embodiment, the suction device is moved backward only once, but it goes without saying that the suction device may be moved backward and forward multiple times to convey the sheet material.

In addition, in the return process of conveying the drawn paper 25 to the paper box 26, the above-mentioned 2
It is also possible to directly convey the material all at once without performing repeated feeding.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the device of the present invention;
Fig. 2 is a vertical cross-sectional view of a puncher installed in an automatic drawing machine, Figs. Fig. 4 is a front view showing the situation where unused paper is fed onto the automatic drawing machine with puncher, and Fig. 5 is a front view showing the situation where the unused paper is temporarily placed on the automatic drawing machine with puncher. The front view shows the situation where only the suction device has been retracted, and Figure 6 shows the situation where the front end of the unused paper is set in the puncher while being adsorbed again by the suction head and placed on the table of an automatic drafting machine with a puncher. FIG. 7 is a front view showing a state in which drawn paper is sucked from an automatic drafting machine with a puncher, and FIG. 8 is a front view showing a state in which drawn paper is stored. A...Automatic drafting machine, B...Sheet material conveyance device, 1
... table, 2 ... intake hole, 3 ... structural material, 4 ... support rod, 5 ... base plate, 6 ... first spline shaft, 7 ... support metal fittings, 8 ... first sliding plate, 9, 10 ... bearing part, 11
...Second sliding plate, 12...Supporting metal fitting, 13...Second spline shaft, 14...Rack, 15...Motor, 16...
Gear, 17... Adsorption device, 18... Adsorption head, 19
...Blow pipe, 20...Motor, 21...Sucker, 22...Air blowing nozzle, 23...Unused paper, 24...Paper box,
25...drawn paper, 26...paper box, 27...ventilation hole,
28... Stopper, 29... Information board, 30... Rack,
31...Motor, 32...Gear, 33...Puncher,
34...Air cylinder for drilling, 35...Punch,
36...Dice, 37...Drawing head, 38...Table guide fixed frame, 39...Limit switch (first detection device), 40...Protrusion piece, 41...Limit switch (second detection device).

Claims (1)

[Scope of Claims] 1. For an automatic drafting machine in which a puncher for punching positioning holes in sheet material is installed on one side edge of the table, a sheet of paper placed on the opposite side of the table from the puncher installation part. A method for transporting sheet materials from a box, the suction device movable between the paper box and the table sucks the leading edge of one sheet material in the paper box in the transport direction, and After conveying the sheet material to the temporary storage position, suction is stopped and the sheet material is temporarily placed at that position.Then, only the suction device is moved back by the required amount, and then the sheet material is suctioned again. A method for conveying a sheet material to an automatic drafting machine, characterized in that the sheet material is conveyed until the leading end is inserted into a position to be perforated by a puncher. 2 A sheet material is conveyed from a paper box placed on the opposite side of the table from the puncher installation part to an automatic drafting machine in which a puncher for punching holes for positioning in the sheet material is installed on one side edge of the table. A suction device that is movably installed between the paper box and the table and capable of suctioning the sheet material; a drive means that reciprocates the suction device; detecting that the sheet material has been suctioned and reached a predetermined temporary placement position on the table, stops the suction operation of the sheet material by the suction device, and operates the driving means so that the suction device retreats. The detection device No. 1 and the suction device detect that the suction device has retreated by a predetermined distance from the temporary storage position, and restart the suction operation of the sheet material by the suction device, and the suction device moves forward again to remove the sheet material from above. A device for conveying a sheet material to an automatic drafting machine, comprising: a second detection device that operates the driving means so that the leading end portion is conveyed to a position to be perforated by a puncher.