KR100493944B1 - The method and apparatus for manufacturing of toner polyester resin - Google Patents

Abstract

In the present invention, the air is sucked into the vacuum integrated unit, and the particles are forcibly discharged from the inside of the grinder, and are transferred to the product storage tank through the transfer pipe, and the ultrafine particles are collected by the dust collector, and the wind speed of the transfer pipe is 55m at 14m / sec. / sec and the degree of vacuum has a suction force of 15mmbar to 300mmbar, the air regulator is installed in the upper and lower grinder to control the flow rate, the circular perforated plate is installed in the lower part of the grinder to suppress the generation of excess particles, The present invention relates to a polyester resin fine particle production apparatus for toner using a wind speed having a hole having a size of 1 to 2 times the maximum particle size of a product, and a manufacturing method thereof.

Description

      Apparatus and method for manufacturing polyester resin fine particles for toner using wind speed {The method and apparatus for manufacturing of toner polyester resin}

The present invention relates to a polyester resin fine particle manufacturing apparatus for toner using a wind speed and a method for manufacturing the same. Specifically, toner polyester resin fine particles for the toner using a wind speed for manufacturing a polyester resin, a toner used in a dry copying machine, as a fine particle An apparatus and a method of manufacturing the same.

Resin particles are widely used for use in clearance holding materials (liquid crystal screen spacers), slippers, functional carriers, functional fillers to adjust the fluidity and gloss of toner and paint.

Suspension polymerization is widely used in the method for preparing the resin particles. The above method involves spraying a dispersed phase component such as an insoluble monomer composition capable of polymerizing a continuous phase such as water into the continuous phase component in the form of droplets, and then spraying the droplet. A method of producing resin particles by polymerization or a conventional suspension polymerization method has a problem in that the particle diameter distribution of droplets dispersed in the continuous phase component is wide.

For example, in the case of mesicle particles having an average particle diameter of 10 μm or less, reduction by mechanical manipulation tends to result in an uneven distribution of force applied to the machine, which greatly increases the formation of fine particles, but also exhibits a slowly improved dispersion. Since large and large particles may also exist, there has been a lot of research because of the problem of wide distribution of particle diameter. For example,

Korean Patent Publication No. 199-4694 discloses a method for producing a air flow classifier, a toner, which forms a high-speed rotational flow on a powder material supplied to a classification chamber, and centrifugally separates the powder material into fine particles and ultra-fine particles. An apparatus for producing toner is described.

Patent Publication No. 195-6885 discloses a fine powder production apparatus comprising a collision airflow grinder using a high pressure gas such as a jet stream, an airflow classification means, and a collision airflow grinding means for milling using a high pressure gas; A method for producing a toner for electrostatic image development is described,

Korean Patent Publication No. 10-037907 discloses a step of passing a liquid forming two phases of a dispersed phase component and a continuous phase component through a stationary inline mixer having a liquid separator fixed in a stationary state; Next, the two liquids are passed through a shear type disperser having a liquid shear device rotating at high speed to disperse the fine droplets of the dispersed phase component into the continuous phase component and to form the resin particles from the resulting droplets. Manufacturing method and a manufacturing apparatus thereof are described,

In the conventional technique shown in FIG. 1, when the polyester resin raw material is introduced into the grinder through the raw material inlet in the size of 1 mm to 30 mm, the polyester resin powder pulverized in the grinder is gravityd through a perforated network mounted at the bottom thereof. It is discharged by natural drop method by primary and stored in closed storage tank, and raw materials that are crushed and stored into fine particles are moved to vibrating screen sorter, and it is less than 75㎛ by vibrating in vibrating screen sorter composed of multi-layered mesh. After sorting three kinds of fine waste products, regular products of 75㎛ ~ 2㎜ size, and oversize products of 2mm or more, and then oversize products of 2mm or more are regrind by putting the grinder again. The grinder has a particle size of the polyester resin depending on the hole size of the perforated network. If the hole of the perforated network is enlarged, many products of 2 mm or more are generated, thus increasing the amount of regrind. On the other hand, if the hole of the perforated network is small, the pulverized fine particles do not escape the perforated network, the stagnation time is lengthened in the grinder and continues to be over-pulverized in the grinder to generate a lot of ultra fine particles, there is a disadvantage that the melt due to the friction heat during grinding.

The vibrating screen sorter has three or multi-stage screens for each standard. Usually, the upper screen has a larger network spacing, and the lower screen has a smaller screen spacing. The pulverized fine particles which pass through the net of each stage by vibrating and the self-weight of the fine particles are discharged to the side outlet. When used for a long time, clogging occurs in the network of each stage has a disadvantage that the selectability is significantly reduced, there is a disadvantage that must be disassembled from time to time. Since the grinder and the vibrating screen sorter rotate or oscillate, there is a problem that a lot of dust is generated, causing environmental pollution.

The prior art as described above has a problem in that the manufacturing process and apparatus are complicated, and the distribution of fine particles is large, and thus a process for re-separation has not been used.

In order to solve the above problems, the present invention is to provide a state of being sucked into the apparatus (close to the vacuum lower than the atmospheric pressure) by the vacuum suction pump to suppress the generation of ultra fine particles and large particles in the pulverizer by the upper and lower air conditioners Fine particles pulverized in the pulverizer are forced through the perforated network by the air flow rate, and are transported using conduits, and the ultrafine particles contained are improved in structure to remove them from the dust collector through the transfer pipe on the upper part of the cyclone storage tank. It is a technical object of the present invention to provide a resin fine particle production apparatus and its manufacturing method.

In order to achieve the above object, in the present invention, the air is sucked into the vacuum integrated unit, and the particles are forcibly discharged from the inside of the grinder, and are transferred to a cyclone storage tank through a transfer pipe, and ultrafine particles are collected by a dust collector. The wind speed is from 14m / sec to 55m / sec and the degree of vacuum has a suction force of 15mmbar to 300mmbar. The air regulator is installed at the top and bottom of the grinder to control the flow rate, and the circular perforated plate is installed at the bottom of the grinder to oversize the particles. The present invention relates to a polyester resin fine particle production apparatus for toner using a wind speed that suppresses the occurrence and makes the hole of the perforated plate one to two times the size of the largest particle of the product, and a manufacturing method thereof.

The polyester resin added during the production of the toner of the present invention has a property that the ultrafine particles and the excessive particles that are too fine cause a deterioration in the manufacturing process of the toner as an additive, and thus have a constant appropriate particle size distribution. The ideal particle size distribution is

<Particle size distribution>

Particle size % Distribution 75 μm to 145 μm 4% 145 μm to 500 μm 82% 500 μm to 2 mm 14%

In other words, when excessively pulverized, a small sized particle group is formed, and ultra fine particles (size: 75 μm or less) are generated, which causes functional degradation and defects as additives. On the contrary, oversize particles larger than 2 mm are also used as additives. It causes malfunction and defects. The raw materials are quantitatively fed into the center of the side of the grinder in a size of 1 to 30 mm.

The main components of the crushing unit (A) is composed of a rotating plate, a fixed plate, a lower circular perforated plate, upper and lower air regulators, the rotating plate of the crusher is connected to the shaft and the electric motor to rotate the rotation plate, 11 ) Is equipped with a rotary plate protrusion rod 13 rigid body at a predetermined interval in one or two rows in the circumferential direction, fixed to the main body of the fixed plate 14, with a custom tailored butt to the protrusion bar of one or two rows of the rotary plate, The fixed plate protrusion bar 15, which is a rigid body, is mounted at regular intervals, and the lower circular perforated plate 3 is perforated with a size corresponding to one to two times the maximum particle size of the polyester resin product, and is crushed by the rotating plate and the fixed plate. The polyester resin particles are forced out with air,

The upper and lower air conditioners have a function to control the amount of air so that the polyester resin is forced out when the polyester resin is crushed to a certain size between the rotating plate and the fixed plate. That is, the fine particles of the pulverized polyester resin It has the function of controlling the particle size by adjusting the retention time.

The conveying pipe (5) is connected to the product storage tank at the lower part of the grinder and is composed of a sealed and integral type. The air flow rate is used in the range of 15m / sec or more and 55m / sec or less, and the flow of air provides suction power. I use it.

Cyclone storage tank (B) stores the product sucked and transported through the transfer pipe, and the lower part has a discharge device to package the product, and since the cyclone storage tank itself is a cyclone, a vortex is formed inside the top of the particulate product. Ultrafine particles (size: 75㎛ or less) are removed.

 The ultra fine feed pipe 6 is connected from the cyclone storage tank to the bottom of the dust collector and is formed in a sealed, integral type, and transfers the ultra fine particles separated from the cyclone storage tank to the dust collector.

The vacuum suction pump 9 is a device for generating suction vacuum for forced discharge of certain particles pulverized in the apparatus. The vacuum suction pump 9 is connected to a dust collecting device, a cyclone storage tank, and a pulverization unit by a transfer pipe, so that the suction vacuum state is maintained in the device. It has a function of storing the product in the storage tank by suction vacuum transfer of the product forcibly discharged from the grinder 10 through the transfer pipe, and has the function of separating, transporting and collecting the ultrafine particles. The working vacuum is preferably used in the range of 15 mmbar to 300 mmbar.

Hereinafter, the present invention will be described in detail with reference to the following Examples.

Example

First process (grinding process)

First, the vacuum suction pump 9 is operated to set the vacuum suction within the range of 15 mmbar to 300 mmbar in the apparatus, and then the raw material is introduced through the polyester resin raw material inlet 1, and the motor 12 Between the rotary plate 11 and the rotary plate protrusion rod 13 in which the rotary plate protrusion rod 13 formed in one column or two rows in the circumferential direction is formed. The fixed plate protrusion rod 15 of the fixed plate 14 to be inserted is fixed so that the rotating plate 11 rotates, and at the same time, the raw material is placed between the rotary plate protrusion rod 13 and the fixed plate protrusion rod 15 of the fixed plate 14. After being charged and pulverized to 4% of 75 µm to 145 µm, 82% of 145 µm to 500 µm, and 14% of 500 µm to 2 mm, the lower part of the grinder 10 corresponds to a size of 1 to 2 times the maximum particle size. The lower air regulator 4 and the raw material formed in the lower part through the hole-punched circular perforated network 3 Polyester resin particles pulverized in the grinder 10 through the feed pipe 5 at an air velocity of at least 15 m / sec to 55 m / sec by the upper air regulator 2 formed at one side of the inlet 1. Is forced to the cyclone storage tank (B) with air (suction vacuum),

 2nd process (Super fine particle removal process)

Forced polyester resin particles are transported in a cyclone storage tank (B).

 The polyester resin particles are sucked and transported through the transfer pipe,

Since the cyclone storage tank (B) itself is a cyclone, vortices are formed inside, and ultrafine particles (size: 75 μm or less) are forced to the dust collector C through the ultrafine feed tube 6 to remove the ultrafine particles. The lower part was discharged by the fine particle outlet 7 to pack the polyester resin particles by a conventional method, thereby preparing polyester resin particles having a desired size.

 Third Process (Ultrafine Particle Dust Collecting Process)

As described above, the ultra-fine particles transferred from the cyclone storage tank (B) in the dust collector (C)

After the collection, the ultrafine particles were discharged by the ultrafine particle outlet 7 'formed at the bottom to collect the ultrafine particles.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a conventional polyester resin microparticles manufacturing apparatus, Figure 2 is a conventional polyester resin microparticles manufacturing process chart, Figure 3 is a detailed view of the polyester resin microparticles manufacturing apparatus for toner using the wind speed of the present invention, Figures 4 and 5 6 is a detailed view of the grinder of the present invention, Figure 6 shows a cross-sectional view of the grinder of the present invention, the reference numerals are the raw material inlet (1), the upper air regulator (2), circular perforation network (3), lower air regulator (4) , Conveying pipes 5, 6, fine particle discharge port 7, ultra fine particle discharge port 7 ', fine particle discharge valve 8, ultra fine particle discharge valve 8', vacuum suction pump 9, grinder 10, rotary plate (11), the motor 12, the rotating plate protrusion rod 13, the fixed plate 14, the fixed plate protrusion rod 15, A; crushing portion, B; cyclone storage tank, C: dust collector is shown. .

Looking at the structure, as shown in Figure 3, the raw material inlet 1, the upper air regulator 2 formed on one side of the raw material inlet (1), the grinder 10 formed in the lower portion of the raw material inlet (1) And a pulverizing unit (A) consisting of a circular perforating network (3) formed in the lower part of the crusher (10), a lower air regulator (4) formed in the lower part of the circular perforating network (3), and in the crushing unit (A). Transfer tube 5 for transferring the pulverized fine particles to the cyclone storage tank (B), and the lower portion is formed narrowly to store the pulverized fine particles to form a vortex therein another transfer tube (6) Dust collection device for transporting to the dust collector (C), the cyclone storage tank (B) for discharging to the particulate discharge port (7) formed in the lower portion, and the ultra-fine particles transported by the another transport pipe (6) (C) and the ultra-fine particle outlet formed in the lower portion of the dust collector (C) for discharging the ultra-fine particles 7 'and a vacuum suction pump 9 which is connected to one side of the dust collecting device C and sucks the inside of the device and maintains the vacuum state, wherein the polyester resin for toner using the wind speed A fine particle production apparatus.

4 to 6 show the crushing unit A in detail, and the crushing unit A is

  The raw material inlet 1, the upper air regulator 2 formed on one side of the raw material inlet 1, the grinder 10 formed below the raw material inlet 1, and the grinder 10 are motors 12. A fixed plate protrusion rod of the fixed plate 14 inserted between the rotating plate 11 and the rotating plate protrusion rod 13 formed inside the rotating plate 11 and the rotating plate protrusion rod 13. It consists of (15), it is composed of a circular perforation network 3 formed in the lower portion of the grinder 10, and a lower air regulator (4) formed in the lower portion of the circular perforation network (3).

As described above, the present invention prevents excessive pulverization by forcibly discharging when pulverized to the appropriate size particles in the pulverizer by using the air velocity of the suction vacuum to prevent the generation of ultra fine particles (size: 75㎛ or less), over 2mm The size particles were crushed again by suppressing the forced discharge by the impact inertia force of the protruding rod of the rotating plate. The forced particle discharge from the pulverizer is controlled by controlling the air flow rate through the air regulator mounted on the upper and lower parts, and the grinding process. Since this vacuum suction is integrated, there is no dust generation, and no excessive size product of 2mm or more is generated, so there is no need for regrinding, and the particle size distribution of the product can be adjusted at any time by using upper and lower air conditioners. There is no problem of cleaning.

1 is a conventional polyester resin fine particle manufacturing apparatus

Figure 2 is a conventional manufacturing process of polyester resin fine particles

Figure 3 is a detailed view of the polyester resin fine particle production apparatus for toner using the wind speed of the present invention

4 and 5 is a detailed view of the grinder of the present invention

Figure 6 is a cross-sectional view of the grinder of the present invention

<Description of the Drawings>

Raw material inlet (1), upper air regulator (2), circular perforated network (3), lower air regulator (4), feed pipes (5, 6), particulate outlet (7), ultra-fine particle outlet (7 '), particulate outlet valve (8), ultra-fine particle discharge valve (8 '), vacuum suction pump (9), grinder (10), rotary plate (11), motor (12), rotary plate protrusion rod (13), fixed plate (14), fixed plate protrusion rod ( 15), A; grinding part, B; cyclone storage tank, C: dust collector

Claims (3)

In the polyester resin fine particle production apparatus for toner using a wind speed, A raw material inlet 1, an upper air regulator 2 formed at one side of the raw material inlet 1, a grinder 10 formed in the lower part of the raw material inlet 1, and a lower part of the grinder 10. Cyclone storage tank (B) for a pulverization unit (A) consisting of a circular perforation network (3), a lower air regulator (4) formed under the circular perforation network (3), and the fine particles pulverized in the crushing unit (A). The transport pipe 5 for transporting to and the crushed fine particles are stored and the lower portion is narrowly formed to form a vortex therein to transfer the ultra fine particles to the dust collector (C) by another transport pipe (6) to the top, Cyclone storage tank (B) for discharging to the particulate discharge port (7) formed in the lower portion, a dust collector (C) for collecting ultra-fine particles conveyed by the another transfer pipe (6), and the dust collector (C) It is formed in the lower portion and the ultra-fine particle discharge port (7 ') for discharging the ultra-fine particles, and is connected to one side of the dust collector (C) An apparatus for producing polyester resin fine particles for toner using a wind speed, characterized by comprising a vacuum suction pump (9) for sucking the inside of the apparatus and maintaining a vacuum state. The method according to claim 1, The grinding unit (A) is a raw material inlet 1, the upper air regulator 2 formed on one side of the raw material inlet (1), the grinder 10 formed in the lower portion of the raw material inlet (1) ), The grinder 10 is a rotating plate 11 which is connected to the shaft to rotate the motor 12, a rotating plate protrusion rod 13 formed inside the rotating plate 11, and the rotating plate protrusion rod 13 It consists of a fixed plate protrusion rod 15 of the fixed plate 14 is inserted between, the circular perforation network 3 formed on the bottom of the grinder 10, and the lower air regulator formed on the lower portion of the circular perforation network ( Apparatus for producing polyester resin fine particles for toner using wind speed, characterized in that 4). In the method for producing fine particles of polyester resin for toner using wind speed, First process (grinding process)  The vacuum suction pump 9 is operated to set the inside of the apparatus in a vacuum suction within the range of 15 mmbar to 300 mmbar, and then the raw material is introduced through the polyester resin raw material inlet 1, and the motor 12 The rotary plate protrusion rod 13 connected to the motor 12 by the operation by the shaft is inserted between the rotary plate 11 and the rotary plate protrusion rod 13 in which the rotary plate protrusion rod 13 is formed in one or two rows in the circumferential direction. The fixed plate protrusion rod 15 of the fixed plate 14 is fixed so that the rotating plate 11 rotates and the raw material is introduced between the rotary plate protrusion rod 13 and the fixed plate protrusion rod 15 of the fixed plate 14. After pulverizing to 75% ~ 145㎛ 4%, 145㎛ ~ 500㎛ 82%, 500㎛ ~ 2mm 14%, a hole corresponding to the size of 1-2 times the maximum particle size in the lower part of the mill 10 The lower air regulator 4 formed in the lower portion through the perforated circular perforated network 3 and the raw material inlet ( The air flow rate of the polyester resin particles pulverized in the grinder 10 through the feed pipe 5 at a speed range of 15 m / sec or more and 55 m / sec or less by the upper air regulator 2 formed on one side of 1) is air. With force (suction vacuum) to the cyclone storage tank (B),   2nd process (Super fine particle removal process) Forced polyester resin particles are transported in a cyclone storage tank (B).  The polyester resin particles are sucked and transported through the transfer pipe, Since the cyclone storage tank (B) itself is a cyclone, vortices are formed inside, and ultrafine particles (size: 75 μm or less) are forced to the dust collector C through the ultrafine feed tube 6 to remove the ultrafine particles. And the lower part is discharged by the fine particle outlet (7) to wrap the polyester resin particles by a conventional method to produce polyester resin particles of a desired size.