JPH0476851B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic bag opening device for tearing and discharging a paper bag filled with rice grains so as to remove residual rice from the bag.

Conventional technology and its problems Conventionally, brown rice has been distributed using jute bags, synthetic resin bags (60
However, the use of jute bags and synthetic resin bags is decreasing due to worsening working conditions, and in the future, paper bags filled with brown rice will be used for wheel transportation. There is a tendency to increase. The paper bag packed by the farmer has the opening at the top of the paper bag body tied with a string to facilitate standard inspection. In addition, with the spread of automation, an automatic bag opening machine 38 is used to open the paper bag by cutting the paper bag from three directions around the bag excluding the fastening string. (See Figure 4) After the rice grains have been discharged from the opened paper bag body, the empty bag is moved to the empty bag pressing rod 39.
The empty bags are compressed by an empty bag processing machine 40 equipped with a 1000 cc empty bag processing machine 40, and the compressed empty bags are taken out of the machine and the remaining rice grains inside the bags are completely sieved off, after which they are bundled and sent to the next process.

When opening the empty bag, a large amount of rice grains may remain inside the paper bag due to a mistake in opening the bag, or rice grains may get stuck on both sides of the fastening string of the paper bag body, so it is difficult to collect the rice grains remaining in the empty bag as described above. This has the problem of requiring multiple steps and time, which reduces work efficiency.

Purpose of the Invention In view of the above-mentioned points, the present device has a first roller section and a second roller section which are arranged to rotate a paper bag which has been cut in three directions: the fastening string section, the bottom section of the bag body, and both side bag sections. By passing through the paper bag, the tightening string side of the opened paper bag body is broken by tensile force and residual rice is removed. To provide a high-performance automatic bag opening device which performs complete shelling work of a paper bag body without residual rice by tearing and correcting the bag, and also achieves labor saving in bag opening work and improves work efficiency. With the goal.

Structure of the Invention The automatic bag opening device of the present invention is provided with a rotary cutter device that cuts the fastening string portion of a paper bag filled with rice grains, the bottom portion of the bag, and both sides of the bag in three directions, and In a bag opening device that opens the bag and discharges the rice grains to a discharge hopper while passing through a first roller section and a second roller section that transport rice grains while pinching the rice grains, a tightening string of the opened paper bag body The first roller part and the second roller part are rotated with a difference in rotational circumferential speed between the first roller part and the second roller part so as to break the part side by a tensile force and remove residual rice. have

DESCRIPTION OF EMBODIMENTS The structure of the present invention will be explained based on FIGS. 1 to 3.

FIG. 1 shows a roller conveyance section 4 connected to a bag cutting section 2 and a discharge hopper 3 of an automatic bag opening device 1. As shown in FIG.

The bag cutting section 2 is provided with a rotary cutter 7 for cutting the fastening string of the paper bag on the inlet side of a transfer conveyor 6 horizontally suspended on a pedestal 5, and a rotary cutter 7 for cutting the fastening string portion of the paper bag. The operating rod 9 is rotatably attached to the end, and the base of the operating rod 9 is connected to a vertical movement rotation device 10 to move the cutter 7 up and down and cut the fastening string portion while rotating from above. , and a rotary cutter 11 at the center of the upper part of the conveyor 6.
At the same time, the cutter 11 is connected to a vertical motion rotation device 12 to cut the bottom of the paper bag body and move the cutter 11 upward, and a pair of rotary cutters 13 are provided on the discharge side of the conveyor 6. ，
14, and each cutter 13,
14 to respective rotating devices 15 and 16 to cut both side body parts of the paper bag body, respectively,
Further, a pair of vibration bodies 17, 17, which are opened by hitting both sides of the fastening string, are respectively attached to both sides of the rotating shaft 8 of the rotary cutter 7 for cutting the fastening string, and rotated. It is formed like this.

The roller conveyance section 4 is composed of a roller bag opening mechanism 18 and a bag breakage conveyor 19.
A plurality of pulleys 22..., 23... are respectively pivotally attached to 0, 21, and the pulleys 22..., 23... are mutually suspended by belts 24... to move the upper surface of the belt in an obliquely upward direction. On the upper side of the belt 24, there is a first roller portion 27 consisting of pinching rollers 25 and 26 that rotate while pinching an open bag from above and below, and a first roller portion 27 consisting of pinching rollers 28 and 29. The second roller portions 30 are arranged diagonally above and below in relation to each other, and the nipping rollers 25 and 28 on the upper side of the roller portions 27 and 30 are connected to the low speed pulley 32 of the rotational speed adjusting mechanism 31. and the high-speed pulley 33 to rotate, and a difference in rotational circumferential speed is provided between the first roller part 27 and the second roller part 30 so that they rotate. The tightening string side of the paper bag body is broken by the tensile force generated by pinching the open bag in each roller part 27, 30, and residual rice is removed. 10 is a limit switch, 35 is a limit switch that is connected to the vertical movement and rotation device 12 of the rotary cutter 11, 36 is a conveyor for carrying in paper bags, and 37 is a vibration device.

The operation of the above configuration will be explained below.

A paper bag containing rice grains (brown rice) is carried into the automatic bag opening device 1 by the carry-in conveyor 36, and is conveyed by being placed on the transfer conveyor 6, and is moved up and down according to a signal from the limit switch 34 that the paper bag comes into contact with. The dynamic rotation device 10 is activated to move the rotary cutter 7 up and down to cut the fastening string portion of the paper bag body, and the vibration bodies 17, 17, which are pivoted on the rotating shaft 9 of the cutter 7, rotate to tighten the paper bag. Both sides of the string portion (meaning the end portions of the bag on both sides bent by the tightening string) are opened by hitting each side, and then the paper bag is rotated vertically by a signal from the limit switch 35 in contact with it. The device 12 is activated to move the rotary cutter 11 up and down to cut and open the bottom of the bag, and when the paper bag moves to the discharge end of the transfer conveyor 6, the rotary cutter 1
3 and 14, respectively, and the first roller section 2 provided in the roller bag opening mechanism 18 is inserted from the upper paper surface of the opened paper bag body.
The opened bag is then conveyed by being inserted between the pinching rollers 25 and 26 of 7 and being pinched, and the opened bag is then carried into the second roller section 30 and being fitted between the pinching rollers 28 and 29 and pinched. and transported. During this time, the rice grains (brown rice) inside the paper bag flow down to the lower discharge hopper 3 and are discharged, and the roller portions 27 and 30
The tightening string part of the paper bag body is broken by the tensile force based on the difference in rotational circumferential speed caused by the pinching, and the remaining rice is completely discharged, and each torn paper bag body is a broken bag. It is transported by the transport conveyor 19 and left to the next process.

Note that the vibration body 17 provided on the rotary cutter 7
It goes without saying that the rotational speed adjustment mechanism 31 provided in the roller conveying section 4 is not limited to the configuration and shape shown in the drawings, and can be modified as appropriate.

Effects of the Invention As explained above, the present invention provides a paper bag body which is cut in three directions: the fastening string part, the bottom part of the bag body, and the bag body parts on both sides.
By passing the opened paper bag through the rollers, the tightening string side of the opened paper bag is broken by tensile force and the remaining rice is removed, thereby preventing mistakes in opening the paper bag by the cutter. The bag-opening process can be corrected by breaking, and the paper bag can be completely shelled without any residual rice, and the bag-opening process can be labor-saving and work efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a side view of the present device, FIG. 2 is a perspective view of the main parts thereof, FIG. 3 is a side view of the vibration body provided on the rotary cutter, and FIG. 4 is a side view of the conventional device. 1... automatic bag opening device, 2... bag cutting section, 3...
...Discharge hopper, 4...Roller conveyance section, 5...
Frame, 6...transfer conveyor, 7...rotating cutter, 8...rotating shaft, 9...operating rod, 10...vertical rotation device, 11...rotating cutter, 12...vertical rotation device, 13 , 14...Rotating cutter, 1
5, 16... Rotating device, 17... Vibrating body, 18...
... Roller bag opening mechanism, 19 ... Transport conveyor for bag breakage, 20, 21 ... Rotating shaft, 22, 23 ... Pulley, 24 ... Belt, 25, 26 ... Clipping roller, 27 ... First Roller section, 28, 29...Pinching roller, 30...Second roller section, 31...Rotational speed adjustment mechanism, 32...Low speed pulley, 33...High speed pulley, 24...Limit switch, 35 ……Limit switch, 36… Carrying conveyor, 37
... Vibration device, 38 ... Automatic bag opening machine, 39 ... Empty bag pressing rod, 40 ... Empty bag processing machine.

Claims (1)

[Scope of Claims] 1. A rotary cutter device is provided for cutting the fastening string part of a paper bag body packed with rice grains, the bottom part of the bag body, and both sides of the bag body in three directions, and also clamps the paper bag body. In a bag-opening device that opens the bag and discharges the rice grains to a discharge hopper while passing through a first roller section and a second roller section, the bag is opened and the rice grains are discharged to a discharge hopper. An automatic bag opening device characterized in that the first roller section and the second roller section rotate with a difference in rotational circumferential speed between the first roller section and the second roller section so as to remove residual rice by breaking the bag. 2. Claim 1, wherein the rotary cutter for cutting the fastening string section has a vibration body that opens the paper bag body by striking both sides of the fastening string section, and is pivoted to the rotary shaft of the cutter. Automatic bag opening device as described in section.