JPH0625456Y2 - Sheet blowing device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sheet blowing device for printing, and in particular, automatically takes out a sheet wrapped in wrapping paper (wamp) or the like. The present invention relates to a device for rearward blowing.

[Prior Art] Conventionally, in order to apply a large-sized sheet to a printing machine, the one-piece opening is opened, the sheets are separated so as not to feed two sheets, and the sheets are stacked again.
It was skillful and labor intensive.

In order to solve this problem, the present inventors invented a packaged sheet opening device that can automatically take out a sheet from a wamp, set it on a stacking table by blowing it, and applied for a patent. (Japanese Patent Application No. 62-37495).

In this newly devised packaging sheet opening device, a conveying device is used to transfer the sheets from the one-punch opening position to the restacking and aligning part. In this conveying device, the clamp is opened. The leading edge of the sheet thus cut is grasped and pulled forward, and the sheet is pulled to a position where the transport mechanism is on standby.

Then the sheet is pulled up onto the transport mechanism. When the sheet is placed on the transport mechanism, the clamp and the transport mechanism move at the same speed to transport the sheet onto the sheet stacking table in the restacking and aligning unit. Next, when the sheets are unloaded from the transport mechanism to the restacking and aligning section, the movement of the sheet is suppressed by a stopper, and the transport mechanism is retracted, leaving only the sheet there. .

The wrapping paper opening device configured as described above has a remarkable effect of being able to satisfactorily automate the opening of the wrap, the taking out of the sheets, the handling, the blowing, and the re-stacking.

[Problems to be Solved by the Invention] Although this device has generally obtained satisfactory results, when the transport mechanism moves to the supply side when the sheets are placed on the transport mechanism and when restacking and blowing are performed. Relative displacement occurs between the sheet and the transport mechanism, and more than expected frictional force due to the weight of the sheet is applied between the sheet at the bottom layer and the loading surface of the transport mechanism. Some of the lower sheets are damaged, stained, misaligned, etc., and improvement of this point is desired.

An object of the present invention is to solve the above-mentioned problems and to obtain a blowing device that does not damage or stain a sheet and that prevents misalignment.

[Means for Solving the Problem] To this end, a sheet blowing device according to the present invention includes a sheet feeding unit, a sheet stacking table for the sheet after air blowing, and The feeding unit grips one end of a certain number of sheets and moves it to the stacking table to release the grip, and the sheet gripped by the gripping moving mechanism is placed on the stacking table. A transport mechanism in which the loading surface is slightly higher than the upper surface of the moving stacking table, and a sheet that presses the leading end of the sheet against the stacking table at the timing when the grip moving mechanism releases the grip. It is characterized in that it is provided with a paper fixing member and a sheet blowing device that ejects air from the left and right nozzles, and the loading surface of the transport mechanism is a rotatable endless belt.

[Operation] In the apparatus according to the present invention, since the loading surface of the transport mechanism is a rotatable endless belt, the transport mechanism is provided on the side of the feeding unit when the sheet is loaded on the transport mechanism and when the sheet is blown into the transport mechanism. When moving, the frictional force between the lowermost sheet and the mounting surface is completely eliminated, and the problems of the prior art can be solved.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 1, a sheet feeding unit 1 according to the present invention is for taking out a sheet from a wamp, for example, a sheet 2 of a sheet wrapped in a wamp is stacked. The uppermost packaging sheet 2a is sent out from the lift table in the direction of the arrow by the pushing member 3, for example, the above-mentioned Japanese Patent Application No. 62-37.
As described in Japanese Patent Application Laid-Open No. 63-203534, etc., the front end side surface and the left and right side surface end portions of the wamp are incised by a rotary cutter or the like (not shown),
Suction cups 6a and 6 are provided on the upper surface 5a and the lower surface 5b of the wamp, respectively.
b is adsorbed and opened by a drive means (not shown) so as to be flipped up and down, and the front end portion 7a of the sheet 7 is opened.
Is exposed. In the figure, 8 is a support roller for supporting the sagging of the leading end of the packaging sheet 2a pushed out by the pushing member 3,
Reference numeral 9 is also a plurality of left and right lifting pieces for lifting the sagging of the leading end portion 7a of the sheet 7, and is rotationally driven about the shaft 10. A suction cup 11 is provided at the rear end of the pump, and functions when pulling out a sheet to be described later.

The gripping moving mechanism 12 grips and pulls out the sheet from the opened wamp, and further, the paper stacking table 21 shown in FIG.
In order to pull up to the sheet stacking table 21, the drive table 20 is provided, and the drive table 20 is moved from the supply unit 1 onto the paper stacking table 21 by a driving force described later, and the grip is released there. For gripping, a pair of upper and lower clamps 13 are operated up and down by a driving means known per se such as a cylinder,
The front end portion 7a of the sheet is gripped. The clamp 13 is attached to the drive base 20.

As shown in FIG. 3, the gripping movement mechanism 12 transmits the rotation of the motor 15 to the screw 16 via the transmission mechanism, and drives the drive base 20 left and right by the sleeve 19 connected thereto.

When the front end portion 7a of the sheet is gripped by the clamp 13 of the grip moving mechanism 12, the drive table 20 moves backward. During this time, since the wamp is sucked by the suction cups 6a, 6b and 11, the sheet 7 is pulled out from the wamp.

The sheet 7 thus pulled out is placed on the loading surface 31 of the transport mechanism 14 of the transport device that is waiting at a predetermined position.

As shown in FIGS. 1, 2, 3, and 4, the transport mechanism 14 includes an upper frame portion 23a, left and right frame portions 23b hanging from the left and right ends thereof, and horizontal left and right mounting portions at the lower ends thereof. 23c, inside of which the drive base 20 of the gripping movement mechanism 12 is provided, and a lacking portion 23d between the left and right riding portions 23c.
The clamp 13 can pass therethrough.
The central portion of the upper frame portion 23a of the transport mechanism 14 is connected to a sleeve 25 propelled by a carry-out screw 24 parallel to the screw 16 of the gripping movement mechanism 12, and the left and right frames 23b are guided by the left and right transport rails 26. To be done. The rotation of the motor 15 is also transmitted to the carry-out screw 24 via a transmission mechanism. A plurality of rods 32 are rotatably attached to the mounting portion 23c, and an endless belt 33 made of resin is hung on the rods 32, and the endless belt 33 freely rotates.

By means of the lifting piece 9 as described above, the leading edge 7 of the sheet 7 is
When “a” is lifted, the clamp 13 is retracted by the sliding of the drive table 20, and the clamp 13 is operated by the operation of the cylinder.
After clamping the sheet 7 from above and below, the clamp 13 immediately advances. During this time, the upper and lower cut parts 5a, 5
Since b is continuously adsorbed by the suction cups 6a and 6b with the mouth open, the sheet 7 is pulled out from the wipe 5. The ejected sheet 7 is conveyed by the transport mechanism 1 waiting at a predetermined position.
4 is pulled up onto and mounted on the endless belts 33 of the right and left mounting portions 23c. When the clamp 13 advances to a predetermined position on the way, the rotation of the motor 15 is transmitted to the carry-out screw 24, the conveying mechanism 14 advances at the same speed as the clamp 13, and the sheet 7 is stacked by the feeding unit 1. It is conveyed above the table 21.

The paper stacking table 21 is moved up and down by an appropriate driving means (not shown), the sensor detects the stacking height of the sheets 7 stacked thereon, and the height of the upper surface 21a thereof is kept constant, and It is designed to be at a position lower than the mounting surface of the transport mechanism and to generate a step.

In this way, when the transport mechanism 14 retracts to a predetermined position above the paper stacking table, the clamp 13 releases its grip,
At the same time, the transport mechanism 14 slowly advances to the right,
Almost at the same time, the plurality of fixing members 22 descend and press the leading end portion 7a of the sheet 7. In this way, the sheet 7 is on the upper surface 21a above the paper stacking table 21 in which the leading edge 7a is in the lower position and the remainder is higher in the transport mechanism 1.
Since there is a step on the endless belt 33 on the mounting surface of No. 4, the sheet 7 bends while the transport mechanism 14 slowly advances to the right. As a result, effective air blowing can be performed by jetting air from the left and right nozzles 27 shown in FIG. In FIG. 3, the transfer mechanism 14 is mounted on the left and right sides, but it is possible to change the design such as fixing it due to space limitations.

[Effect of the Invention] According to the sheet blowing device of the present invention, it is possible to automatically take out the sheet from the one-punch, transfer it to the paper stacking table, and blow it into the sheet, thereby improving the work efficiency. Can be done. Particularly, in the device of the present invention, when a sheet is placed on the transport mechanism or is unloaded from the transport mechanism, an endless belt is hung on a plurality of freely rotating rods on the loading surface of the transport mechanism to rotate. Since it is free, even if there is relative displacement between the transport mechanism and the sheet, the sheet can be smoothly placed on the loading section without being affected by its own weight, and can be lowered. You can From this,
The sheets can be effectively fed to a printing machine or the like up to the last sheet at the bottom of the stacked sheets without any damage or stain on the sheets and also preventing the positional deviation.

[Brief description of drawings]

FIG. 1 is a front view of an air blowing device of the present invention, FIG. 2 is a side view of a conveying device, FIG. 3 is a front explanatory view showing a state in which a sheet is unloaded from the conveying device, and FIG. 4 is a conveying mechanism. It is a front explanatory view showing the mounting portion of. 1 ... Supply unit 1a ... Restacking and aligning unit 2 ... Packaging sheet 2a ... Top packaging sheet 3 ... Pushing member 5 ... Wamp 5a ... Wamp upper surface 5b ... Wamp lower surface 6a ... … Sucker 6b …… Sucker 7 …… Sheet 7a …… Tip 8 …… Support roller 9 …… Lifting piece 10 …… Spindle 11 …… Sucker 12 …… Grip moving mechanism 13 …… Clamp 14 …… Transport mechanism 15 ... Motor 16 ... Screw 19 ... Sleeve 20 ... Driving table 21 ... Paper stacking table 22 ... Fixing member 23a ... Upper frame part 23b ... Left and right frame part 23c ... Loading part 23d. Part 24 ...... Transport screw 25 ...... Sleeve 26 ...... Transport rail 27 ...... Nozzle 31 ...... Riding surface 32 ...... Rod 33 ...... Endless belt

Claims (1)

[Scope of utility model registration request] 1. A sheet feeding section, a sheet stacking table for sheets after air blowing, one end of a certain number of sheets is gripped in the feeding section, and is moved and gripped on the sheet stacking table. A gripping and moving mechanism for releasing, and a transporting mechanism in which the loading surface is slightly higher than the upper surface of the above-mentioned paper stacking table on which the sheets gripped by the gripping and moving mechanism are mounted and moved onto the paper stacking table,
A sheet fixing member that presses the leading end portion of the sheet against the sheet stacking table in accordance with the timing at which the grip moving mechanism releases the grip, and a sheet blowing device that ejects air from the left and right nozzles. A sheet blowing device, characterized in that the sheet feeding surface of the transport mechanism is a rotatable endless belt.