JP2000072119A - Automatic bag opening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an entire device compact in size, increase an air-tightness of a housing portion for processing a bag filled with powdery and granular materials and integrally store another powdery and granular material processing device with an automatic bag opening device and realize a multi-function. SOLUTION: During a bag opening operation performed at an automatic bag opening device S, an inner side of a housing 1 is air-tightly sealed, an injection of powdery particle out of the housing is prevented, a dust collecting device is eliminated out of the housing 1 of the automatic bag opening device S and then an entire device is made compact in size. A sieve machine 11 and a high air-sealed air transmitting device 12 are integrally stored to attain a multi-function. Powdery particles in a powder filling bag F are transported to the high air-sealed air transmitting device 12 through the sieve machine 11 and they are discharged at the downstream side. An effect of ejector can be attained through high pressure air or a booster 13 even at the high air-sealed air transmitting device 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is to automatically open a bag for transportation filled with various kinds of granules such as food granules, chemical granules and chemical granules and to discharge the contents from the bag. The present invention relates to an improvement of an automatic bag opening device that allows the automatic bag opening device to be operated.

[0002]

2. Description of the Related Art The present inventor has already proposed an automatic bag opening apparatus disclosed in JP-A-8-258820. Despite having more functions and performance than the conventional device, this automatic bag opening device not only makes the entire device extremely compact, greatly reducing the installation space, but also cleans the work environment in the operation of the device. It has been proposed for the purpose of providing an automatic bag-opening device that is eco-friendly, socially friendly and human-friendly, such as energy saving, resource saving and recycling, while achieving the realization of energy saving.

This automatic bag opening apparatus is an apparatus for automatically opening a bag filled with various kinds of granules such as food granules, chemical granules and chemical granules, and discharging the contents from the bag. And a bag supporting portion and a bag receiving portion, and a bag supporting portion and a bag receiving portion for holding a bag filled with various kinds of granular materials supplied from the bag inserting port inside a housing having a bag inlet and a powder outlet. Insert the insertion rod into the bag held by the bag and hang the bag insertion holder, and cut the lowermost part of the bag suspended by the bag insertion holder to drop and discharge the contents of the contents to the outside A bag cutting portion to be sewn, a bag fold portion for discharging an empty bag cut by the bag cutting portion to release the granular material of the contents from a bag discharge opening formed in a side surface of the housing through a bag discharge roller to the outside of the housing. And a dust collecting device.

[0004] However, the following problems have been clarified as a result of actually operating the above-mentioned conventional automatic bag opening apparatus in a powdery or granular food processing plant such as a flour mill. Since the dust collecting device is built in for the purpose of sucking the powdery particles remaining floating inside the housing, there is a problem that it is difficult to change the design of the entire device into a compact shape. There is a problem that even if the powdery particles remain inside the housing, the washing operation by water washing cannot be performed. There is a problem in that the powder particles remaining floating inside the housing enter and adhere to a mechanism or a driving portion for directly processing the bag, and the remaining powder particles are likely to rot, causing the generation of various bacteria. Since it is attached to the middle point of the transport pipeline of the pneumatic transport device that transports the granular material, the suction force by the high-pressure air is weak, and the suction efficiency of sucking the granular material released inside the housing into the transport pipeline is poor. There was a problem.

[0005]

SUMMARY OF THE INVENTION Accordingly, the invention described in the claims is to reduce the space occupied by the dust collecting device by eliminating the dust collecting device from the inside of the housing to reduce the internal volume of the housing and to reduce the driving system. The power unit is housed inside the housing to prevent it from protruding outside. Further, the structure is such that the granular material being processed does not enter the mechanism or the driving portion. Still another object of the present invention is to provide an automatic bag opening apparatus capable of exhibiting a multi-function by integrally incorporating another granular material processing apparatus used in connection with the automatic bag opening apparatus inside the housing. I have.

[0006]

In order to achieve the above object, the present invention provides a bag charging port for introducing a bag filled with a granular material, and a bag processing chamber formed therein. A housing provided with a machine chamber partitioned from the bag processing chamber, sealing means for preventing powder and granules generated in the bag processing chamber from entering the machine chamber, and connected to the bag processing chamber. An automatic bag opening apparatus, comprising: a pneumatic transportation device provided integrally with the housing. With this configuration, the bag opening device could be sealed, and the dust collector was not required. This not only eliminates the need for extra space to house the dust collector, but also eliminates the need for air ducts and wiring to operate the dust collector, and simplifies the entire system, realizing a space-saving and low-cost stationary unit. The device can be made compact by minimizing the extra space inside the bag device. In addition, by incorporating the pulverized material pneumatic transport device integrally, the positive pressure inside the bag opening device can be directly converted into the transport pressure, and energy efficiency can be improved. In addition, since the bag opening device side can be set to plus pressure and the powder air transport device side can be set to negative pressure, if a powder and particle processing device such as a sieving machine is installed in the middle, the size and capacity can be increased. become.
In addition, since the flow of air in the device was substantially in the same direction as the gravity, the flow of the granular material was smooth. Furthermore, it became possible to simplify the adjustment of the high-concentration transport capacity by adjusting the pressure.
Furthermore, by adding ozone etc. to high pressure air,
Sterilization of pharmaceutical powders is also possible. In addition, as the pulverized material pneumatic transport device, a high-concentration pneumatic transport device can be exemplified. Structural ones. In addition, it is preferable that a part of the machine in the machine room be able to move into and out of the bag processing room or to advance and retreat, and that the portion is preferably sealed. For example, a part of a machine that supports or cuts and opens the powder-filled bag is configured to support and cut open the bag so that the bag can freely come and go.

[0007] The term "granules" used herein includes powders, granules, or powders and granules in which powder and grains are mixed. Various types such as food particles, chemical particles, and chemical particles are included. Specific examples include granulated sugar, glucose, skim milk powder, starch, rice bran, spices, cement, fly ash, carbon black, salt, detergent, wheat, rice, maize,
Soybean, malt, silica sand, alumina oxide, titanium oxide, calcium carbonate, pulverized coal, lime, soda ash, food mix powder, wheat mix powder, soup powder, petrochemical powder, chemicals, pigment, compound fertilizer, phenolic resin, polyethylene resin , ABC resin, PVC powder, polypropylene powder,
And powder coatings.

According to a second aspect of the present invention, there is provided a sifter which is interposed between the bag processing chamber and the pneumatic material transport device and is provided integrally with a lower portion of the housing. The automatic bag opening device according to the above. The sieving machine can collect dust and the like, and the above-described action of the negative pressure can reduce the size and increase the capacity.

According to a third aspect of the present invention, there is provided a housing having a bag inlet for introducing a bag filled with a granular material, a bag processing chamber formed therein, and a machine room separated from the bag processing chamber. And sealing means for preventing powder and granules generated in the bag processing chamber from entering the machine chamber, and a sieve connected to the bag processing chamber and provided integrally with the housing. This is an automatic bag opening device. For example, there is an example in which the invention according to claim 3 is provided on the second floor and a mixer as a downstream device is connected to the first floor.

According to a fourth aspect of the present invention, there is provided the automatic bag opening apparatus according to any one of the first to third aspects, wherein a transport fluid accelerator is provided in the pneumatic material transport apparatus. A booster can be exemplified as a transport fluid accelerator.

[0011] As a specific example of the first aspect of the present invention, there is provided an automatic bag opening apparatus for automatically opening a bag filled with a granular material and discharging the contents from the bag, and a housing accommodating the entire apparatus. A bag inlet formed at an upper portion of the housing, a powder outlet formed at a lower bottom surface of the housing, and air provided in the bag inlet of the housing so as to be openable and closable to shut off outside air. A shielding plate, a pedestal-shaped bag support portion pivotally mounted at the lower end near the bag insertion port inside the housing, and an upper end rotated from an obliquely inclined state to an upright state; and a lower portion of the bag support portion. A substantially L-shaped bag receiving portion that pivots the upper end to the rear from the hanging position and the lower end is pivoted rearward, and near the bag supporting portion on the inner wall surface inside the housing, the tip is cut sharply. Insert the insertion rod with the air ejection port in the inner diameter A bag insertion holding portion that expands and contracts with respect to the plate surface of the holding portion, and a bag cutting portion that is provided on the opposite surface of the bag receiving portion and cuts a lower portion of the bag suspended by the bag insertion holding portion with a cutter. A horizontally-long rectangular bag outlet formed in a housing wall near an intermediate point between the bag insertion holding portion and the bag receiving portion, and near an inner wall portion of the bag outlet, parallel to an opening surface of the bag outlet. A bag discharge roller portion juxtaposed from above and below via a predetermined gap to be provided, and provided on the inner wall surface on the bag input port side inside the housing opposed to the bag discharge roller portion, and the distal end surface of the thin plate-like push plate is arranged vertically. A bag fold that extends and contracts with respect to a gap surface of a bag discharge roller unit, a powder and particle sieve provided in communication with a powder and particle discharge port on a lower bottom surface of the housing, and the powder and particle sieve Automatic pouch opening, characterized by comprising a pneumatic conveying device connected to the discharge port of the powder Location can be exemplified. In this specific example, these components can be adopted in any combination.

Further, specific examples of the sealing means include a panel surface inside the housing where the insertion rod of the bag insertion holding portion expands and contracts, a panel surface inside the housing where the push plate of the bag insertion portion expands and contracts, A panel surface inside the housing near the bag discharge roller portion where the push plate of the portion expands and contracts, a panel surface inside the housing where the cutter of the bag cutting portion protrudes and slides, an external bag discharge opening surface of the housing, and a bag receiving portion. The air seal member which shuts off outside air is provided in each of the panel surface inside the housing in which the plate material slides.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic bag opening apparatus S according to the present invention will be described below with reference to the drawings. The configuration of the automatic bag opening apparatus S according to the present embodiment will be generally described. As shown in FIGS. 1 and 2, a vertical housing 1, a bag input section 2 attached to an opening K 1, and an opening A bag assist unit 3 for receiving and supporting the powder-filled bag F (see FIG. 3) dropped from the unit K1 from the side, and a bag support unit for supporting the powder-filled bag F dropped from the bag input hood 2b at the bottom. 4 and
A bag insertion portion 5 that is inserted into and held on the upper portion of the granular material filling bag F raised by the bag assisting portion 3 and the bag supporting portion 4, and a granular material filling suspended from the bag inserting portion 5. A bag cutter unit 6 for cutting the bottom of the bag F, and an empty bag G for folding the empty bag G (see FIG. 24) which has been emptied by discharging the powdery material at almost the middle point between the upper side and the lower side. Bag pushing part 7 for pushing
And a bag pressing portion 8 for pressing the empty bag G folded and pushed in by the bag pressing portion 7, and an empty bag for discharging the empty bag G passing through the roller surface of the bag pressing portion 8 to the outside of the housing 1. A discharge unit 9 and a shooter 10 into which the granular material discharged from the bag falls.
And a sieve 11 that is attached in communication with the shooter 10 and sifts the granules while stirring the granules, and a high-concentration air transport that conveys the granules separated by the sieve 11 with high-concentration air. It comprises a device 12 and a booster 13 connected to the high-concentration air transport device 12.
Hereinafter, each part will be sequentially described in detail.

The housing 1 has an opening K1 formed in the upper right part of the housing 1, an opening K2 formed in the lower part (see FIGS. 10 and 11), and an airtight seal provided to close the opening K1. A panel 1a, an external panel 1c for partitioning from the outside, a first internal panel 1d for partitioning a first machine room M, and a second internal panel 1 for partitioning a second machine room N
e. The top and side surfaces of the housing 1
Although separated by the inner panel 1d and the second inner panel 1e, the housing 1 has no bottom plate, and an opening K2 is formed. These are an airtight state in which the air is blocked from the outside air by an air seal described later, and an open state in which the air is communicated with the outside air.
It is configured to take two states. The opening K2 communicates with a sieving machine 11 and a high-concentration air transport device 12, which will be described later, so that the high-concentration air transport device 12 is connected to a downstream device such as a cyclone. FIG.
As shown in FIG. 7, an airtight panel 1a is axially mounted on an outer panel 1c near the opening K1 via a drive shaft 1b. The airtight panel 1a normally closes the opening K1 by the biasing force of a return spring provided on the back surface, but hits the tip of the granular material filling bag F transferred from the outside by the transport conveyor 14. To open and close to the position indicated by the two-dot chain line arrow B. As shown in FIG.
The inspection door 1f is provided on the left and right sides of the bag insertion section 2 and has a knob 1
g is for opening and closing the inspection door 1f. An inspection door 1i is attached below the housing 1 and can be opened and closed by a handle 1j.

As shown in FIG. 1, the bag charging section 2 has an opening K
1 is provided with a bag input hood 2b having a rear end attached and a front end serving as a bag input opening 2a. This bag input hood 2
b is attached so as to match the opening K1 of the housing 1 as shown in FIG. 3, and as shown in FIG. 3, near the lower end of the tip, the tip of a transport conveyor 14 such as a flour mill is arranged. The powder-filled bag F loaded and transported on the transport conveyor 14 is supplied.
As shown in FIG. 3, a rotary shaft 2c provided near the bag input port 2a and an air damper 2d opened and closed via the rotary shaft 2c are mounted inside the bag input hood 2b. The air damper 2d can shut off the bag inlet 2a of the bag inlet hood 2b, and is pushed when the front end of the powder bag F transported from the outside by the transport conveyor 14 hits, and is indicated by a two-dot chain line arrow. It turns to the position of A.

As shown in FIGS. 1 to 3, the bag assist section 3 includes a bag assist panel 3a and a bag assist panel 3a.
A drive shaft 3b that is pivotally mounted on the bag assist panel 3a to rotate the bag assist panel 3a in an inclined or upright state, a bearing 3c that pivotally mounts the drive shaft 3b inside the housing 1, and a drive actuator 3d that rotates the drive shaft 3b.
FIG. 6 shows the bag assist panel 3a.
In the range shown by the two-dot chain line arrow D from the inclined state to the upright state. As a result, FIG.
As shown in (a), the granular material-filled bag F dropped from the bag input hood 2b can be supported by the bottom of the bag assist chair 4a.

The bag support portion 4 shown in FIGS. 1 to 3 includes a bag assist chair 4a and a drive shaft 4b which is pivotally mounted on the bag assist chair 4a and rotates the bag assist chair 4a.
And a bearing 4c for pivotally driving the drive shaft 4b inside the housing 1, and a drive actuator 4d for rotating the drive shaft 4b.
Are rotated back and forth within the range of the two-dot chain line arrow I shown in FIG.

The bag insertion portion 5 shown in FIGS. 1 to 5 is provided in a second machine room N inside the housing 1.
The bag insertion portion 5 includes an insertion rod 5a and a drive actuator 5b for inserting and removing the insertion rod 5a.
Are expanded and contracted left and right by the drive actuator 5b, and are movable as shown by a two-dot chain line arrow C shown in FIG. 4. Four through holes 1h ( 5 (see FIG. 5). As shown in FIG. 5, the second inner panel 1e from which the insertion rod 5a protrudes has a donut-shaped air seal 5c attached around a through hole 1h through which the insertion rod 5a passes. When the insertion rod 5a projects from the hole of the second inner panel 1e, it slides while sliding on the donut-shaped inner diameter surface of the air seal 5c. Thus, even if the insertion rod 5a is inserted into the powder-filled bag F and the powder adheres, the powder is removed by the air seal 5c when the insertion rod 5a is pulled back to the second machine room N. It is prevented from dropping and entering the inside of the second machine room N. The insertion rod 5a is a hollow pipe having a sharp tip and is provided with a plurality of air nozzles 5d for blowing out high-pressure air supplied from the outside. Plug 5
Although a is completely hidden in the second machine room N when it is in the most retracted state, the drive actuator 5b is operated to make the insertion rod 5a protrude, so that it can protrude into the bag processing chamber L. That is, all or a part of the insertion rod 5a can freely move in and out of the first machine room M. In short, the bag insertion section 5 supports the bag F filled with granular material and supplies high-pressure air to the bag processing chamber L.

As shown in FIGS. 1 to 4, the bag cutter 6 is provided in the first machine room M, and as shown in FIG.
A long bag cutter 6a provided horizontally in the machine room M
And a drive actuator 6b attached to the first inner panel 1d of the housing 1 for driving the bag cutter 6a, and a lateral direction to the first inner panel 1d so that the bag cutter 6a can slide and pass. And a bag cutter protruding hole 6c that is open to the outside. As shown in FIG.
An air seal 6d is attached to the bag cutter protruding hole 6c of the first inner panel 1d, and a horizontally long slit 6e is formed in the air seal 6d. The bag cutter 6a slides in the direction of the two-dot chain line arrow G along the slit 6e. It works. Most of the bag cutter 6a protrudes into the bag processing chamber L and is usually located at the end, but moves from one end to the other as shown by an arrow G when driven. After the end of the cutting, it returns to the original end position. As a modified embodiment, the drive actuator 6b is operated to operate the bag cutter 6a.
Or a part of the first machine room M can be freely set in and out of the first machine room M.

Similarly, a bag pushing section 7 is provided in the first machine room M. The bag pushing portion 7 includes a bag pushing plate 7a, which is a rectangular plate, and a drive actuator 7b attached to the first inner panel 1d and the like, and when completely retracted, is completely hidden in the first machine room M. However, when the drive actuator 7b is operated to project the bag pushing plate 7a, the bag pushing plate 7a can be projected into the bag processing chamber L.
That is, all or a part of the bag pushing plate 7a can freely move in and out of the first machine room M. As shown in FIG. 9, the bag pushing plate 7a pushes open the slit 7e of the air seal 7d attached to the bag pushing plate projecting hole 7c in the two-dot chain line arrow H direction and contracts into the housing 1. ing. As shown in FIG. 7, the bag pushing plate 7a is slid between the two-dot chain line arrow E by the drive actuator 7b,
When the leading edge 7g of the bag pushing plate 7a moves to the left fully, it can be positioned near the gap between the upper and lower two bag pressing rollers 8a. The air seal 6 described above is used.
d and 7d, the bag cutter 6
a and the bag pushing plate 7a are operated, the first machine room M, the second machine room N, and the bag processing room L are kept in a confidential state, and the granular material is moved from the bag processing room L to the first machine room. M, it is possible to prevent entry into the second machine room N.

As shown in FIG. 8, the bag press contact portion 8 has two upper and lower bag press rollers 8a provided on the drive shaft 8b, respectively, and rotates in the direction of the two-dot chain line arrow R. It is mounted so that the gap 8c of the bag pressing roller 8a matches the position of the empty bag discharge port 9a of the housing 1. As shown in FIG.
On the left side of the empty bag discharge port 9a, a transport conveyor 15 is installed.

As shown in FIG. 8, the empty bag discharging section 9
An empty bag discharge port 9a, an air seal 9b attached to the empty bag discharge port 9a for preventing floating powder particles generated inside the housing 1 from leaking outside, and an air seal 9b
And a horizontally-long slit 9c provided in the above. As a result, the empty bag G folded into two pushes the slit 9c in the direction indicated by the two-dot chain line arrow T and is discharged to the outside of the housing 1.

As shown in FIG. 11, below the opening K2, a shooter 10 into which the powder discharged from the bag inside the housing 1 falls is connected to the outer panel 1c and the first inner panel 1d. A sieving machine 11 is provided in the housing 1 below the shooter 10 for sieving the granules while stirring the granules. As shown in FIGS. 11, 12, 25A and 25B, the sieving machine 11 includes a motor 11a provided at the bottom of the housing 1;
An inspection hatch 11b for removing the particles remaining inside or pulling out the main body at the time of inspection; an inspection window 11c (see FIG. 1) for visually inspecting the inside of the sieving machine 11;
A knob 11d for pulling out 1b, a drive belt 11e driven by the motor 11a, a drive shaft 11f rotated by the drive belt 11e, a semi-cylindrical separation net 11g provided below the drive shaft 11f, and a separation net. The two stirring blades 11h provided near the upper surface of the drive shaft 11f and projecting at an angle of 180 degrees from the drive shaft 11f, and the right end of the drive shaft 11f is a bearing 11
and a drive pulley 11j fitted around the drive belt 11e and wound around the drive belt 11e.

The high-concentration pneumatic transport device 12 shown in FIGS. 11 and 12 is also called a shuttle feeder, and is used for short-distance small-quantity transport of powders. The high-concentration air transport device 12 includes an air inlet 12a that supplies high-pressure air,
It has an inspection window 12b for inspecting the inside and a granular material transport port 12c. The high-concentration pneumatic transport device 12 uses a stirring screw (not shown) on the way to remove the powder and granules supplied from the sieving machine 11 into a hollow screw 12d at the bottom (FIG. 1).
(See the two-dotted line) is installed horizontally, so that the powder can be uniformly sent to it. As shown in FIGS. 13 and 14, the screw 12 d is provided with spiral blades continuously provided on the outer periphery of a hollow shaft.
A pillow unit 12f, a semicircular parallel key 12g, and a rotary joint 12h are supported by a bearing 12e. The screw 12d is connected to the motor 11a
The powder is extruded by this to form a material seal. At the tip of this screw 12d, a nozzle joint 1
The injection port 12j (nozzle) is connected with the 2i interposed. As shown in FIG. 17, the granular material is transported while being loosened by the blades of the screw 12d.
Is mixed with the compressed air supplied from the hollow part of the above to make the granular material fluidize. This allows
The powder separated by the sieving machine 11 can be transported by high-concentration air.

The sieve 11 and the high-concentration air transport device 12 are surrounded by an external panel 11c (see FIG. 12). Further, the drive shaft 11f of the separation net 11g of the sieving machine 11, the separation net 11g, the stirring blade 11h
The high-concentration air transport device 12 has a third
The other driving part is covered by the inner panel 1m, and the third machine room P is located between the outer panel 1c and the third inner panel 1m.
It is installed in. Therefore, the powder and granules are in the third machine room P
Is not allowed to enter.

The booster 13 is a high-concentration air transport device 1
2 is connected to the powder material transport port 12c and is integrally provided inside the housing 1. As shown in FIG. 16, the booster 13 has a flange 13b at one end of a booster body 13a forming a cylindrical pipe unit.
Is formed. The granular material transport port 12c of the high-concentration air transport device 12 is connected to the flange 13b. A hollow portion 13c is formed in the inner center of the booster main body 13a in the axial direction, and the powder and the granular material and the high-pressure air for transportation flow in the hollow portion 13c in the arrow J direction. The hollow portion 13c has a portion whose diameter is reduced in two steps in the axial direction. The booster 13 has a donut-shaped air chamber 13d formed inside a thick flange 13b forming an outer diameter portion of the pipe unit as shown in a cross section in the drawing.
A plurality of small-diameter air jet nozzles 13e penetrating from 3d to the hollow portion 13c are provided at a predetermined interval and are inclined. Furthermore, the flange 13 of the booster body 13a
The b is provided with two high-pressure air supply ports 13f at the top and bottom in the figure, and communicates with the air chamber 13d. By supplying high-pressure air from the high-pressure air supply device 13g to the high-pressure air supply port 13f and injecting high-pressure jet air into the hollow portion 13c in the direction indicated by the solid arrow U, powder particles that are pneumatically transported through the hollow portion 13c The body can be transported more efficiently.

Next, the relationship between the internal pressures of the automatic bag opening apparatus 1 will be described with reference to FIG. The fluid pressure ejected from the air nozzle 5d is P ₁ , the fluid pressure P ₂ supplied to the hollow portion of the screw 12d, the air jet nozzle 13e
Assuming that the fluid pressure ejected from the container is P ₃ , the fluid pressure ejected downstream from the hollow portion 13 c is P ₄ , the atmospheric pressure is P ₀ , and the fluid pressure in the powder transport chamber Q is P _m , the powder bag F is subjected to bag processing. During processing in the chamber L, P ₄ > P ₃ > P ₂ > P ₁ >
The relationship of P ₀ > P _m holds. Here, the air nozzle 5
d, the fluid pressure P ₁ jetted from the air jet nozzle 13e
The pressure P ₃ of the fluid ejected from the screw 12 d is supplied from the high-pressure air supply source 60, and the pressure P ₂ of the fluid supplied to the hollow portion of the screw 12 d is supplied from the high-pressure air supply source 65. P ₄ , P ₃ , P ₂ , P ₁ , and P ₀ are substantially constant, but P _m fluctuates. That is, when the bag opening process is performed, the fluid pressure P ₁ spewing from the air nozzle _5d, the fluid pressure P ₂ to be supplied to the hollow portion of the screw _12d, the fluid pressure P ₃ spewing from the air jet nozzle 13e are supplied, The bag processing chamber L is in a sealed state,
Since high pressure air in the pressure P ₁ spewing from the air nozzle 5d, the pressure inside the bag processing chambers L becomes higher positive pressure than the atmospheric pressure P _0, on the other hand, the fluid pressure in the powder delivery chamber Q P _m is the atmospheric pressure P ₀ Lower than. Therefore, it is possible to effectively utilize the P _m is the negative pressure in the powder delivery is characterized by the ejector effect, the fluid pressure P ₄ of the spewing from the cavity portion 13c is highest.
When the bag opening process is close to the end, P _m is the negative pressure is automatically returned gradually to the atmospheric pressure P _0. Therefore, even if a new powder filling bag F to be processed next enters through the opening K1, no processing is required, and the powder does not spout out from the opening K1. Conventionally, it was necessary to use a dust collector to deliberately return the pressure to the atmospheric pressure P ₀ so that the powder would not be ejected to the outside. However, in this embodiment, the dust collector becomes unnecessary and the size is reduced. Is a contributor. Furthermore, by a fluid pressure spewing from the air nozzle 5d to increase or decrease the P _1, it is possible to increase or decrease the flow rate of the fluid spewing from the cavity portion 13c to the downstream (external), there is an advantage that adjustment of the flow is simplified. When the bag opening process is completed, the bag processing chamber L, the powder transport chamber Q
The pressure is returned to the atmospheric pressure _{P 0.} Then, pressure is applied again, and the process is repeated. Details of the processing will be described later. Also, the fluid pressure ejected from the air jet nozzle 13e is P
Numeral ₃ enhances the above-described ejector effect, and is preferably supplied, but may not be provided depending on conditions.

The control unit 20 has an operation panel 30 and an electronic control circuit 50 as shown in FIG. An electronic control circuit 50 shown in FIG. 19 includes a CPU 51 for performing automatic bag opening control, a RAM 52 for temporarily storing data, a read-only ROM 53 for storing an automatic bag opening control program, and a counter 5 for counting.
4, a timer 55 for measuring time, a voice control unit 56 for performing voice control, and a display control unit 57 for performing display control
And an input / output port 58 for inputting / outputting a signal, and a bus 59 for interconnecting the above-mentioned components.
The input / output port 58 receives input signals from the bag detection sensor 41 provided on the drive actuator 3d, the bag detection sensor 42 provided on the drive actuator 4d, and the like, and also receives drive signals 3d, 4d, 5b, 6b, 7
b, for transmitting an output signal to the high-pressure air supply device 13g, the motor 11a, and the like. The input / output port 58 is also connected to a display 70 and a speaker 80 so as to display an image such as a driving situation and output sound. The input / output port 58 is interconnected with the operation panel 30 or the central control device 90 to transmit and receive signals. Normally, the electronic control circuit 50
And a centralized control device 90 (see FIG. 19) inside a mill or the like, so that drive control is performed centrally. The operation panel 30 is basically used when operated manually.

(Operation of the Embodiment) Next, the actual operation of the automatic bag opening apparatus S according to the present embodiment having the above-described configuration will be described with reference to FIGS. First, when the power is turned on by operating the operation panel 30 provided in the control unit 20, the CPU 51 reads a program for the automatic bag-opening sieve transport process stored in the ROM 53 in advance, and executes the process shown in the flowchart of FIG. Execute First, as shown in FIG.
The granular material-filled bag F is conveyed into the bag charging hood 2b from the transport conveyor 14 in the direction of the solid line arrow. The bag F thus conveyed pushes and opens the air damper 2d of the bag inlet 2a to pass through the inside of the bag inlet hood 2b as shown in FIG. The airtight panel 1a is pushed open and dropped into the housing 1.
Then, the airtight panel 1a which has been released from the pressing of the powder bag F and is in a free state is returned and opened by the urging force of the return spring provided on the back surface as shown in FIG. The section K1 is shut off. In addition, the air damper 2d also closes the bag inlet 2a of the bag inlet hood 2b. Thus, after the bag F has passed through, the inside of the housing 1 is automatically shut off from the outside and becomes airtight. On the other hand, the powder-filled bag F that has fallen into the housing 1 rides on the upper surface of the bag assist panel 3a and is once held in an oblique state as indicated by the solid line arrow.

When the electronic control circuit 50 starts the processing and proceeds to step 100, it is determined whether or not the bag F has been loaded into the housing 1. If the determination is negative, the process is repeated. If the determination is affirmative, the process proceeds to step 110. This determination is made as shown in FIG. 21 (b), when the powder-filled bag F is securely mounted on the upper surface of the bag assist panel 3a, the drive actuator 3d of the bag assist panel 3a
The bag detection sensor 41 provided in the step (1) detects the dropping of the bag, and this detection signal is output to the electronic control circuit 50. Based on this signal, it is determined whether or not the bag is inserted in step 100.

At step 110, the electronic control circuit 50 outputs a drive signal to the drive actuator 3d. Thereby, as shown in FIG. 22A, the bag assist panel 3a starts rotating the drive shaft 3b,
The powder-filled bag F stands up in the direction indicated by the solid arrow. The powder-filled bag F that has thus risen falls in the direction of the arrow. And it will be received by the upper surface of the bag assist chair 4a. When the bag F filled with the granular material is dropped on the bag assist chair 4a, the bag detecting sensor 42 provided in the driving actuator 4d of the bag assist chair 4a detects the drop of the bag and outputs a detection signal to the electronic control circuit 50. . When the electronic control circuit 50 reads the bag sensing signal from the drive actuator 4d, it outputs a drive signal to the drive actuator 3d, and as shown in FIG. Return to Subsequently, when the process proceeds to step 120, the electronic control circuit 50 outputs a drive signal to the drive actuator 5b. As shown in FIG. 22 (b), when the drive actuator 5b operates the insertion rod 5a in the direction of the solid line arrow, the insertion rod 5a pierces and holds the upper part of the bag F filled with the granular material.

When the insertion rod 5a is inserted into the bag F, the electronic control circuit 50 proceeds to step 130 to output a drive signal to the drive actuator 6b, and subsequently proceeds to step 140 to drive the drive actuator 4d. To output a drive signal. Then, as shown in FIG. 23A, the bag assist chair 4a supporting the bottom of the granular material-filled bag F rotates in the direction of the solid arrow (clockwise) to rotate the granular material-filled bag F. Free below As a result, the powder bag F is suspended by the insertion rod 5a. Then, the drive actuator 6b starts operating, and FIG.
As shown in FIG. 3 (b), the bag cutter 6a cuts the lower part of the granular material-filled bag F in a lateral direction slightly above the lower end side. When the drive actuator 6b operates the bag cutter 6a, the electronic control circuit 50 proceeds to step 150 and outputs a high-pressure air release signal to the drive actuator 5b. In the drive actuator 5b, the built-in high-pressure air valve is opened, and high-pressure air supplied from the outside is inserted into the insertion rod 5b.
a. Then, air is blown out from the air nozzle 5d shown in FIG. 5, whereby the powdery material filled in the powdery material filling bag F is subjected to the action of the high-pressure air discharged from the insertion rod 5a and the action of gravity. Due to the synergistic effect, it is effectively dropped in the direction of the solid arrow and discharged.

When the granules in the bag F are discharged and become empty bags G, the electronic control circuit 50 proceeds to step 160 and outputs a drive signal to the drive actuator 7b. As shown in FIG. 24A, the drive actuator 7b slides the bag pushing plate 7a to the left, and pushes the empty bag G toward the gap 8c of the bag pressing roller 8a. At this time, since the bag pressing roller 8a is being rotated by the drive shaft 8b, the empty bag G is, as shown in FIG.
As shown in FIG. 8, while being engulfed by the bag pressure contact roller 8a, it is folded into two, penetrates a horizontally elongated slit 9c provided in the air seal 9b from the gap between the roller surfaces, and the empty bag discharge port 9a is It will be released outside. The empty bag G discharged from the empty bag discharge port 9a to the outside of the housing 1 in this manner is transported by the transport conveyor 15 provided near the housing 1 as shown in FIG.

On the other hand, the granular material discharged to the lower part of the housing 1 falls in the direction of the dotted arrow as shown in FIG. 25 (a), and falls on the upper surface of the separation net 11g of the sieving machine 11. Become. Then, the electronic control circuit 50 proceeds to step 170, and outputs a drive signal to the motor 11a of the sieving machine 11. The motor 11a starts according to a drive signal from the electronic control circuit 50. The motor 11a rotates the drive shaft 11f via the drive belt 11e. As a result, the two stirring blades 11h projecting from the drive shaft 11f stir and sieve the particles on the separation net 11g. And 11g of separation net
Is supplied to the inside of the high-concentration air transport device 12 as shown by the dotted arrow. If there are any particles or foreign matter remaining in the separation net 11g, the operation is stopped, the inspection door 1f (see FIG. 2) is pulled out of the housing 1, the separation net 11g is exposed, and the residue is removed.

When the processing from the automatic bag opening to the sieving operation is completed in this way, and the granular material is supplied into the high-concentration air transport device 12, the electronic control circuit 50 proceeds to step 180, where the high-concentration air transport is performed. A drive signal is output to the device 12.
As a result, the high-concentration pneumatic transport device 12 starts the pneumatic transport operation, high-pressure air is supplied from the booster 13, and the pneumatic transport operation is continued as long as necessary.

(Effects of Embodiment) As described above, the automatic bag opening apparatus S of this embodiment has the following effects. (1) By eliminating the dust collecting device from the inside of the housing 1 and making it unnecessary, not only the entire automatic bag opening device S can be made compact, but also contamination reduction, ductlessness, etc. have been realized. . As a result, the installation space in a mill or the like can be effectively used. (2) The interior of the housing 1 can be kept airtight with respect to the outside air at all times except for the work of loading the bag F, since the interior of the housing 1 can be hermetically sealed and can be shut off from the outside air. It became so. Thereby, the housing 1
Since the internal bag processing chamber L can be converted into the transport pressure as it is as a positive pressure, the transport capacity and efficiency have been dramatically improved. In addition, even if the step of discharging the granular material from the granular material filling bag F is performed, the granular material does not soar and float from the inside to the outside, and does not leak to the outside and contaminate the factory. , It became possible to keep the working environment clean. (3) An air seal 5c is provided on each of the attachment portions of the insertion rod 5a, the bag cutter 6a, the bag pushing plate 7a, and the empty bag discharge port 9a to the housing 1 for directly processing the powder bag F.
By providing the air seal 6d, the air seal 7c, and the air seal 9b, it is possible to prevent the floating particulates generated when performing the operation of discharging the particulates from the particulate filling bag F from entering the mechanism and the driving part. Can now be prevented.
As a result, it is possible to prevent the granular material from entering and remaining in the machine chambers M and N of the housing 1 that are difficult to clean, thereby preventing the granular material from spoiling and generating various bacteria. (4) The design of the housing 1 can be easily changed,
It is easy to manufacture for small factories in consideration of loading and installation space. (5) Space saving and low cost are realized by using a stationary unit type in which the sieve 11 and the high-density pneumatic transport device 12 are integrated into the housing 1 of the automatic bag opening device S. (6) Since the sieve 11 and the high-density air transport device 12 are integrally provided at the lower portion of the housing 1 through the opening K2, the pressure in the upper bag processing chamber L becomes positive, and the sieve 11 Since the lower portion of the sieving machine has a negative pressure, a smooth flow of air is generated from the upstream side to the downstream side of the sieving machine 11, and the size and the capacity of the sieving machine 11 are increased. (7) By connecting the booster 13 to the high-density pneumatic transport device 12, the pneumatic transport capability is greatly improved. (8) The transport capacity of the high-concentration air transport device 12 can be easily adjusted by adjusting the pressure of the pressure ejected from the air nozzle 5d. (9) Since the flow of air from the automatic bag opening device S to the sieve 11 and the high-concentration air transport device 12 is in the same direction as gravity,
The flow of the powder becomes smooth. (10) Food and pharmaceutical powder can be sterilized by adding ozone or the like to the high-pressure air supplied into the high-concentration pneumatic transport device 12.

In the above-described embodiment, the method of loading the bag F into the housing 1 is as follows.
The opening K1 is formed on the side surface of the container, and the opening K1 is provided with the bag charging hood 2b. However, the present invention is not limited to this. When the present invention is applied to a small automatic bag opening apparatus S 'for processing a filled small bag or the like, as shown in FIG. 26, a bag is put on this upper surface as a housing 1' having a shorter upper portion and a lower height. An opening K1 'is provided. And this opening K
A shutter 1a 'and a shutter opening / closing drive actuator 1b' are provided in 1 'so as to be opened / closed in a direction indicated by a dotted line to form a bag opening. Further, there can be exemplified a structure in which the bag assist panel 3a which has raised the powder-filled bag F is eliminated, and a structure in which the powder-filled bag F 'is dropped vertically.
If the bag detecting sensor for detecting the insertion of the bag is attached to the bag assist chair 4a ', the same operation and effect as in the above embodiment can be obtained.

Further, in the automatic bag opening apparatus S, the rotation of the screw 12d and the driving of the sieving machine are shared by one motor 11a, but may be provided as separate drive sources. That is, as shown in FIGS. 27 and 28, a sieve motor 211a is provided for the sieving machine 211, and a screw drive motor 211b is provided for the screw 212d. The automatic bag opening apparatus S "has the same effect as the automatic bag opening apparatus S.

Although the present embodiment has been described above, it is obvious that the configuration of the present invention can be appropriately modified without departing from the technical idea of the present invention, and such a modification is also included in the technical scope of the present invention. Belong to. For example, in the present invention, the sieving machine 11 and the high-concentration powder transport device 12 are integrated into the closed housing 1 provided with the bag processing means. It is a matter of course that a device incorporating only the device 12 and a device incorporating an arbitrary particle processing device therein can be applied.

[0040]

(1) According to the first aspect of the present invention, since the inside of the housing is sealed, the dust collecting device can be eliminated from the inside of the automatic bag opening device, thereby making it unnecessary. As a result, the sieve and the pneumatic material transportation device could be integrally provided inside the automatic bag opening device. By minimizing the extra space inside the automatic bag opening device and connecting the sieving machine and the pneumatic material transportation device densely, sufficient performance can be achieved even with a small sieving machine. . In addition, it prevents floating particulates generated during the operation of releasing particulates from the bag from entering and remaining in mechanisms and driving parts, corroding and causing germs and causing malfunctions It became possible to do. (2) It is also possible to make the whole apparatus compact and to make the internal pressure distribution positive in the upper layer and negative in the lower layer to create the same air flow as gravity, and the powder and granules released by the bag opening device Flow becomes smoother. (3) Further, the adjustment of the pulverized material pneumatic transport device by adjusting the pressure is facilitated. (4) According to the second aspect of the present invention, the pneumatic transportation of the particulate air transport device is greatly improved by providing the transport fluid accelerator in the particulate air transport device.

[Brief description of the drawings]

FIG. 1 is a front view illustrating an internal structure of an automatic bag opening apparatus S according to an embodiment of the present invention.

FIG. 2 is a right side view showing an internal structure of the automatic bag opening apparatus S.

FIG. 3 is a front view showing an internal structure of the automatic bag opening apparatus S and a transport conveyor.

FIG. 4 is a partially enlarged front view of the internal structure of the automatic bag opening apparatus S.

FIG. 5 is a perspective view of the insertion rod 5a and the like.

FIG. 6 is a front view showing the internal structure of the automatic bag opening apparatus S in a partially enlarged manner and showing the operation of the bag assist panel 3a.

FIG. 7 is a front view in which the internal structure of the automatic bag opening device S is partially enlarged and shows the operation of the bag pushing plate 7a.

FIG. 8 is a partially enlarged view of the internal structure of the automatic bag opening apparatus S and is a perspective view showing a state in which empty bags G are discharged.

FIG. 9 is an explanatory view in which one side portion of the internal structure of the automatic bag opening apparatus S is partially enlarged.

FIG. 10 is a front view showing an operation of the bag assist chair 4a by partially enlarging the internal structure of the automatic bag opening apparatus S.

FIG. 11 is a right side view in which the internal structure of the automatic bag opening apparatus S is partially enlarged and displayed.

FIG. 12 is a right side view showing the internal structure of the automatic bag opening device S in a partially enlarged manner, and showing the sieving machine 11 and the high-concentration air transport device 12.

FIG. 13 is an explanatory diagram showing a structure of a screw 12d and the like of the automatic bag opening apparatus S.

FIG. 14A is an explanatory view showing the structure of the screw 12d, and FIG. 14B is an explanatory view showing the structure of the front end.

15A is a left side view of the ejection port 12j, FIG. 15B is a sectional front view of the ejection port 12j, and FIG.
i is a front view, and (b) is a left side view of the ejection port 12j.

FIG. 16 is a partial sectional side view of a booster 13 of the automatic bag opening apparatus S.

FIG. 17 is a partial sectional side view of a booster 13 of the automatic bag opening apparatus S.

FIG. 18 is an explanatory diagram showing a pressure relationship when the automatic bag opening apparatus S is operated.

FIG. 19 is a control unit 2 of the automatic bag opening apparatus S.
FIG. 3 is a system block diagram of an electronic control circuit 50 housed inside the electronic control circuit 0.

FIG. 20 is a flowchart of an automatic bag opening sieve transport process executed by the electronic control circuit 50;

FIG. 21 (a) shows a bag F filled with powder and granular material to the automatic bag opening apparatus S.
(B) is an operation explanatory view showing a state in which the powder-filled bag F falls inside the automatic bag opening apparatus S. FIG.

FIG. 22 (a) is an operation explanatory view showing a state where a powder-filled bag F is erected inside the automatic bag-opening device S, and FIG. It is operation | movement explanatory drawing which shows the state inserted in the body filling bag F.

FIG. 23 (a) is an operation explanatory view showing a state in which the granular material filling bag F is cut inside the automatic bag opening device S, and FIG. FIG. 4 is an operation explanatory view showing a state in which a powder is released from the apparatus.

24 (a) is an operation explanatory view showing a state in which the empty bag G is folded inside the automatic bag opening apparatus S, and FIG. 24 (b) is an empty bag G discharged outside the apparatus inside the automatic bag opening apparatus S. FIG.

FIG. 25 (a) is an operation explanatory view showing a state in which the granular material passes through a sieve 11 and a high-concentration air transport device 12 inside the automatic bag opening device S, and FIG. 25 (b) is an operation viewed from the same plane. FIG.

FIG. 26 is an automatic bag opening apparatus S ′ according to another embodiment of the present invention.
It is the front view showing the internal structure of.

FIG. 27 is a front view of still another embodiment of the present invention.

FIG. 28 is a right side view showing the internal structure of the automatic bag opening apparatus S ″.

[Explanation of symbols]

 S Automatic bag opening device 1 Housing 1a Airtight panel 1b Drive shaft 1c External panel 1d First internal panel 1e Second internal panel 1f Inspection door 1g Knob 1h Penetration hole 1i Inspection door 1j Handle 1m Third internal panel 2 Bag inlet 2a Bag inlet 2b Bag inlet hood 2c Rotary shaft 2d Air damper 3 Bag assist unit 3a Bag assist panel 3b Drive shaft 3c Bearing 3d Drive actuator 4 Bag support 4a Bag assist air 4b Drive shaft 4c Bearing 4d Drive actuator 5 Bag insert 5a Insertion rod 5b Drive actuator 5c Air seal 5d Air nozzle 6 Bag cutter 6a Bag cutter 6b Drive actuator 6c Bag cutter projecting hole 6d Air seal 6e Slit 7 Bag pusher 7a Bag pusher 7b Drive actuator 7 c Projection hole of bag push-in plate 7d Air seal 7e Slit 7g Tip side 8 Bag press contact portion 8a Bag press contact roller 8b Drive shaft 8c Gap portion 9 Empty bag discharge portion 9a Empty bag discharge port 9b Air seal 9c Slit 10 Shooter 11 Wiper machine 11a Motor 11b Inspection hatch 11c Inspection window 11d Knob 11e Driving belt 11f Driving shaft 11g Separation net 11h Stirring blade 11i Bearing 11j Driving pulley 12 High-concentration air transport device 12a Air inlet 12b Inspection window 12c Powder transporting port 12d Screw 12e Bearing 12f Pillow unit 12g Parallel key 12h Rotary joint 13 Booster 13a Booster body 13b Flange 13c Hollow part 13d Air chamber 13e Air jet nozzle 13f High pressure air supply port 13g High-pressure air supply device 14 Transport conveyor 15 Transport conveyor 20 Control unit 30 Operation panel 50 Electronic control circuit 51 CPU 52 RAM 53 ROM 54 Counter 55 Timer 56 Voice control unit 57 Display control unit 58 Input / output port 59 Bus 41 Bag sensing sensor 42 Bag detection sensor 60 High-pressure air supply source 65 High-pressure air supply source F Granular material filling bag G Empty bag K1 Opening K2 Opening M First machine room N Second machine room L Bag processing room P Third machine room Q Powder Transport room S 'Automatic bag opening device 1' Housing 1a 'Shutter 1b' Shutter opening / closing drive actuator 3a 'Assist guide S "Automatic bag opening device

Claims (4)

[Claims] 1. A housing having a bag inlet for introducing a bag filled with a granular material, a bag processing chamber formed therein, and a machine room partitioned from the bag processing chamber, and the bag processing chamber. A sealing means for preventing the particulates generated in the above from entering the machine chamber; and a particulate pneumatic transport device connected to the bag processing chamber and provided integrally with the housing. Bag opening device. 2. The automatic opening device according to claim 1, further comprising a sieving machine interposed between a bag processing chamber and the pneumatic material transport device, and provided integrally with a lower portion of the housing. Bag equipment. 3. A housing comprising: a bag inlet for introducing a bag filled with granular material; a bag processing chamber formed therein; and a machine room partitioned from the bag processing chamber; An automatic bag-opening device, comprising: a sealing means for preventing the granular material generated in the above from entering the machine chamber; and a sieve connected to the bag processing chamber and provided integrally with the housing. 4. The automatic bag opening device according to claim 1, wherein a transport fluid accelerator is provided in the pulverized material pneumatic transport device.