JPS6124511Y2 - - Google Patents

Description

[Detailed description of the invention] At a paper manufacturing factory, a roll of paper is cut to a specified size, defective paper is inspected and removed in the sorting process, and the stacked paper layers are piled up to a specified number of sheets, for example, 1 ream 250 sheets. The reams are packaged in packages of 500 to 500 reams and shipped out, and a fully automatic packaging method and a manual packaging method are adopted for packaging the reams. The present invention relates to a device associated with manual packaging methods. This device is generally used for special paper quality or special size paper.
For example, this method is used for packaging high-quality coated paper flat sheets. In this case, a pile of paper layers conveyed by a lift truck through the paper forming, cutting, and sorting processes is loaded onto a first table lifter installed in the ream packaging process section. Next, a certain number of sheets of paper, for example one ream, are manually inspected to remove defects and transferred onto a second table lifter adjacent to the first table lifter. The ream packaging work is completed and the products are stacked at a certain height.
The product is transported to a predetermined product shipping process via a subsequent conveyor. In this case, two female workers are usually employed on both sides of the first table lifter, grasping the paper layer for each ream, and moving the paper from the first table lifter to the second table lifter.
The wrapping tape is pasted by moving the table lifter laterally onto the wrapping paper. This transfer work is a series of repetitive tasks that require the weight of one ream to be 18Kg to 36Kg and the packaging time is approximately 1 to 1.5 minutes. It has long been desired to improve the work in this section, as it tends to cause diseases such as pain and injury in the neck, shoulders, arms, etc., and the introduction of the automatic air thruster according to the present invention will contribute to labor-saving work and a reduction in the labor burden. There's a lot to do.

The present invention effectively utilizes a conventionally known air thruster device for the above-mentioned manual work, and includes a tape switch for selecting an air thruster nozzle of a specific shape and for automatically supplying and shutting off pressurized air to the nozzle. Equipped with a micro-switch to automatically stop the advance of the nozzle, and a phototube device and time switch to set a predetermined elevation level of the table lifter, each of these devices is interlocked according to a series of sequence operations. The operation is performed sequentially by starting an electric circuit using a push button, thereby greatly reducing the burden placed on female workers in transversely feeding paper layers.

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 schematically shows the arrangement in a manual cross-feed packaging section equipped with an air thruster device 1 according to the invention. On the left side of the figure, an air thruster device 1 is installed which is operated according to a predetermined sequence of operations by a start switch 40 and a foot switch 41. A control panel 15 equipped with an electric control circuit is fixedly formed on a support frame 3 fixed on a floor surface 14, and an air cylinder 2 is arranged and fixed horizontally, and can freely reciprocate from side to side within the cylinder. A slider nozzle 6 is fixed to the tip of a piston rod 4. The slider nozzle 6 has a hollow interior for blowing out pressurized air, and an inlet conduit 10;
The flexible tube 11 communicates with a source of pressurized air, such as an air blower 12 .

Fig. 2 is an enlarged drawing of the air thruster nozzle 6, Fig. 2a is its plan view, and Fig. 2b is its side view. It is formed into a fan-shaped nozzle that widens toward the mouth. As shown in Fig. 2b and c, the side cross section and cross-sectional profile perpendicular to the insertion direction are such that the thickness decreases toward the tip to facilitate insertion between paper layers, and the A-A cross-sectional profile has a flat bottom surface. The nozzle is constructed as a flat nozzle with a curved upper surface, and when manufacturing the nozzle, the entire outer surface is made smooth to avoid tearing the paper material, sharp edges are removed, and the nozzle is molded using plastic. Depending on the base material, it is possible. In order to eject pressurized air from the thruster nozzle 6, a tape switch 7 is attached extending from the center of the upper surface of the thruster nozzle 6 to the rear side, as shown in FIG. The tape switch 7 is turned on when pressed by the constant weight of the paper layer, energizes the pressurized supply electromagnetic valve 13 to open the valve, and pressurized air is blown from the nozzle 6 between the paper layers. Then, as the weight of the paper layer decreases due to the lateral feeding operation of the paper layer, the tape switch returns to the OFF state, deenergizes the solenoid valve 13, and automatically stops the blowing operation of the pressurized air. Furthermore, a forward position stop micro switch 8 for regulating the forward movement of the thruster nozzle is mounted on a vertical plate 9 erected on the rear side of the thruster nozzle 6. The stop micro switch 8 is a push switch that is pressed when the thruster nozzle 6 comes into contact with the front side of the paper layer 22 during its forward movement. 2, the forward movement of the thruster nozzle is automatically stopped.

A photoelectric tube device such as a photocoupler is provided on the support frame 3 for detecting and setting a predetermined level of the paper layer into which the slider nozzle 6 is to be inserted.
The pile of paper layers 22 loaded on the first lifter 1 is carried in and placed on the first lifter 20, and counter tape 23 is inserted in advance at the boundary surface of each ream of the paper layers 22 to facilitate the worker in the pulling and lifting operation.

When the phototube device 5 first presses down the start switch 40 at the start of ream packaging work, the phototube device 5 completes preparations for the detection action, and the elevating drive mechanism of the first lifter 20 is interlocked to move the first lifter up and down. 20 are performed to set the level position of the predetermined stacked paper layer into which the thruster nozzle 6 is to be inserted. Reference numeral 30 indicates a second lifter, which is horizontally moved from the first lifter 20 onto the second lifter 30 by a worker's hand under the floating field action of the air thruster 1.
The paper layers for the reams are placed on the ream wrapping paper 32, and then packaged as a ream packaging body 31. Next, the stacked ream packages 33 deposited on the adjacent pallets are conveyed to the next process by a conveyor 34.

The operation mode of the air thruster device described above will be further explained with reference to FIG.

(a) Unwrapped laminated paper to be loaded on the first lifter 20 section is carried into the section by a lift truck and stacked on the lifter as shown.
At this time, the appearance and surface of the stacked papers are inspected according to predetermined selection criteria, and defective papers are removed. Then, when the start switch 40 is pressed, the photocell device 5
is ready for operation, and the device adjusts the elevation of the first lifter 20 in conjunction with the elevation drive mechanism of the first lifter 20 to set the height position of a predetermined paper layer level into which the thruster nozzle 6 is to be inserted. .

(b) Next, the worker pulls out and removes the counter tape 23, and at the same time, slightly lifts the front edge of one ream's worth of the uppermost paper layer bundle and presses down the foot switch 41. As a result, air cylinder 2
operates, the thruster nozzle 6 is driven forward,
A flat thruster nozzle tip having a flat bottom surface and an arched upper surface is inserted into the lower surface of the paper layer. The manner in which the nozzle 6 is inserted by forward driving is automatically controlled according to a predetermined sequence described below. (i) When the thruster nozzle 6 moves forward and is inserted between the paper layers, the micro switch 8 installed on the rear side of the nozzle comes into contact with the front side of the paper layer and presses the switch 8, thereby driving the air cylinder 2. At the same time, the thruster nozzle 6 is first stopped at a predetermined position.

(ii) Around the time of the operation in (i) above, the tape switch 7 of the nozzle 6 senses a certain weight of the paper layer and turns on, energizing the solenoid valve 13 for pressurized air supply and opening it; Pressurized air is blown from the nozzle 6 into the gap on the lower surface of the reamed paper layer, thereby significantly reducing the weight of the reamed paper layer to be transferred.

Therefore, at this time, the worker can easily cross-feed one ream's worth of paper layer onto the ream wrapping paper 32 on the adjacent second lifter 30.

(iii) As soon as the above-mentioned uppermost reamed paper bundle is separated from the upper surface of the thruster, the tape switch 7 is activated to the OFF state, the solenoid valve 13 is deenergized and closed, and the supply of pressurized air is immediately stopped. At the same time, the air cylinder 2 is driven in the opposite direction to return the air thruster 6 to its old position.
Wait for next cycle.

(iv) After the air cylinder 2 is retracted, the first lifter 20 is raised to a height corresponding to the height of one ream through the phototube device, so that the paper layer is placed at the predetermined position in which the thruster nozzle 6 is to be inserted. is set to the level position.

Figures 4a and 4b show an example of an electrical circuit for carrying out the above operations. Figure 4b mainly shows switch TS1.
FIG. 4a shows an operating circuit related to the solenoid valve SV1 for supplying pressurized air by closing the solenoid valve SV1, in which the solenoid valve related circuit in FIG. 4b is omitted. In FIG. 4a, R and S indicate two-phase AC power supply busbars, and from above the start on button PB-1 of the start switch 40 is pressed.
(normally open contact) and off button PB-2 (normally closed contact) are shown, relay AS0 is closed by self-holding circuit (normally open contact) AS0, and the subsequent circuits enter the energized state in preparation for operation. Symbol NFB shown on the dotted line
is a circuit safety breaker. When the phototube circuit enters the ready state for operation by closing AS0 on bus R, relay AS1 is energized as light enters the light receiving device of phototube device PH1, and normally open contact AS
1 closes an electromagnetic switch (not shown) for operating the hydraulic pump motor of the lifter drive system, the first lifter rises until relay AS1 is deenergized, and the lifter is activated via auxiliary relay timer CBRT. is set correctly.

Next, when the foot switch 41 is depressed, the circuit switch FS1 is closed, and at this time, the reverse position switch CBR is placed in the closed position when the cylinder piston is in the backward waiting position. closed contact
When AS1 and thruster advance stop micro switch 8 are closed, the normally closed contact AS2, which is opened only by relay AS2, is closed, and the relay coil circuit for cylinder advance is energized, and relay AS3 is activated, making the normally open contact Close AS3 and energize the solenoid control valve SVF operating the air cylinder to drive the cylinder piston forward. AS3 in parallel with FS-1
The normally open contact of is a self-holding circuit, and the CPF is a safety circuit breaker. Circuit switch TS1 of stop micro switch 8 installed on the rear side of air thruster 1
When 1 closes the circuit by contacting the front side of the paper layer, relay AS2 operates, and relay switch AS2 opens to cut off the forward relay circuit of the cylinder and activate the relay.
AS3 is deenergized, switch AS3 is opened, the electromagnetic control valve is returned to the neutral position, and the forward movement of the thruster is stopped.

Further, when the weight of the paper layer applied to the nozzle reaches a certain value as the nozzle moves forward as described above, the tape switch 7 is turned on. In Figure 4b, when tape switch TS1 in the lower 24V AC circuit is closed, tape switch relay TSR is activated.
By closing the normally open contact TSR in the AC200V circuit and inserting and arranging the off-delay timer _T1 for air blowing, air blowing action is also activated. This stabilizes the normally open contact T ₁ and closes the relay TR for nozzle blowout.
1 to close the normally open contact TR1, and energize the pressurized air solenoid valve SV1 to open it. SV0 in the circuit indicates a bypass solenoid valve (not shown), and it is a normally closed contact while the blowout solenoid valve SV1 is open.
When TR1 is opened, it is closed, and only during the period of closure, bypass solenoid valve SV0 is opened to release the air to the atmosphere, thereby avoiding overload operation of the floor 12.

Next, when the thruster nozzle 6 separates from the paper layer, the tape switch TS1 is turned off, the above-mentioned relay returns to its old position, and the solenoid valve for blowing out pressurized air is turned off.
SV1 is closed and bypass solenoid valve SV0 is energized.

As mentioned above, in the air thruster according to the present invention, when the start button is initially pressed, the height position of the laminated paper layer on the first lifter is adjusted to a predetermined height position according to a predetermined electrical sequence by detection by a phototube device. Then, by pressing down on the foot switch, the forward movement and stopping of the thruster, as well as the injection and cutoff of pressurized air from the thruster nozzle, are automatically and electrically controlled by a predetermined sequence operating circuit. Not only can various operations be performed easily and quietly, but the control equipment can also be housed on a single control panel, saving space and making the device extremely simple and paper-free. It can be effectively applied to manual packaging methods for layers.

[Brief explanation of the drawing]

Fig. 1 shows a schematic diagram of a cross-feeding manual packaging equipment equipped with an air thruster device according to the present invention, Fig. 2a is an enlarged plan view of the air thruster nozzle in Fig. 1, and Fig. 2b is an Figure 2a is an elevational view seen from the side, Figure 2c is a cross section of the nozzle taken along the A-A cross section in Figure 2a, and Figure 3 is the operational process of the lateral feed operation using the air thruster according to the present invention. 4a and 4b show an example of an electric circuit for implementing a series of sequence operations in the thruster device. 1... Air thruster device, 2... Air cylinder, 3... Support frame, 6... Thruster nozzle,
7... Tape switch, 8... Stop micro switch, 13... Solenoid valve, 15... Control panel, 20...
...first lifter, 22... stacked paper layer, 30... second lifter.

Claims (1)

[Claim for Utility Model Registration] An air thruster is inserted between the predetermined paper layers loaded on the table lifter to blow pressurized air,
An air thruster device that performs a horizontal transfer operation by reducing the weight of the paper layer to be transferred includes a fluid cylinder device having a thruster facing the stacked paper layer and capable of advancing and retracting control, and a table lifter that controls the elevation level of the table lifter. A phototube device to be set at a predetermined height position is installed on a support frame, and a forward stop micro switch is provided on the rear side of the thruster nozzle to control the forward movement of the nozzle by contacting the side surface of the paper layer. A tape switch that detects a certain paper layer weight and turns on and off is attached to the top surface of the flat thruster nozzle, and the tape switch is inserted into a solenoid valve circuit for supplying pressurized air. For stacked paper equipped with an electric circuit that performs a series of sequence operations that automatically ejects pressurized air when the thruster nozzle inserts the paper between the paper layers, and shuts off the ejection of pressurized air when the thruster nozzle separates from the paper layer. Air thruster device.