KR20230139376A - Apparatus of extrusion cylinder for rubber mixing which is capable of reducing noise and increasing rotation speed - Google Patents

Abstract

The present invention relates to an extrusion cylinder device for kneading, which reduces the discharge load of the kneaded material to prevent changes in the physical properties of the element, greatly improves the discharge amount of the kneaded material and the rotation speed of the extrusion screw, and can greatly improve the extrusion screw's extrusion speed. Noise during screw rotation can be greatly reduced.
The extrusion cylinder device for kneading according to the present invention includes a raw material supply chamber 150 that kneads the input raw materials by two screws rotating in opposite directions and discharges them downward; An extrusion cylinder (170) installed horizontally at the lower part of the raw material supply chamber (150) and having an opening in communication with the raw material supply chamber (150) and a cooling water circulation path (172) formed inside its body; And a chucking mouth 200 installed at one end of the extrusion cylinder 170. In the extrusion cylinder device for kneading, it is installed by fastening to the chucking mouth 200, and an insertion hole 211 is formed through the center. An extrusion die 210 having a plurality of discharge holes 220 formed through the outer edge of the insertion hole 211; It is rotatably installed inside the extrusion cylinder 170, and a spiral blade 182 is formed around the rotation shaft 181 along the longitudinal direction up to the tip 183, and the tip 183 is the extrusion die ( An extrusion screw 180 that is installed to protrude out of the insertion hole 211 of the extrusion die 210 and rotates to discharge the kneaded material through the outlet 220 of the extrusion die 210; and a plurality of bearings 250 that are installed inside the insertion hole 211 of the extrusion die 210 and rotate while supporting the distal end 183 of the extrusion screw 180.

Description

Extrusion cylinder device for mixing that can increase rotation speed and reduce noise {APPARATUS OF EXTRUSION CYLINDER FOR RUBBER MIXING WHICH IS CAPABLE OF REDUCING NOISE AND INCREASING ROTATION SPEED}

The present invention relates to an extrusion cylinder device for kneading that can continuously knead a mixture of raw materials and additives, and more specifically, an extrusion cylinder device for kneading that can increase rotation speed and reduce noise. It's about.

In addition, the present invention relates to an extrusion cylinder device for kneading that can automatically control the discharge temperature of the blend by circulating cooling water through a cooling water circulation path formed inside an extrusion die.

Generally, semi-finished products used to manufacture products (e.g., rubber, plastic products, solid fuel, etc.) are a mixture of various raw materials (rubber, plastic, waste, waste, etc.) and additives (hereinafter referred to as ‘mixtures’). ') is made by extrusion molding, and the mixture must be mixed so that the semi-finished product can meet the required quality. Methods for kneading the mixture can be broadly divided into methods using a batch type kneading device and methods using a continuous kneading device. The former method is disadvantageous compared to the latter method in terms of productivity, A variety of continuous kneading devices have been proposed.

The kneaded material kneaded in the kneading device is supplied to the extruder. Here, an extruder is a machine that supplies raw materials, heats them, melts them, and continuously generates pressure to extrude them into a certain shape. It has been developed for extrusion molding of rubber and plastics.

Conventional mixing rolls for kneading have two rotors inside the chamber that engage and rotate to knead the kneaded material introduced from the top while being pressured and transported between the two rotating rotors. When kneading is completed, a cover at the bottom of the chamber opens downwards. It is configured to discharge the kneaded material.

However, such a conventional mixing roll for kneading is configured to knead the kneaded material only with two rotors that engage and rotate, so the distribution and dispersion of the kneaded material is not smooth, so not only does it take a lot of time to knead, but the kneading is also difficult. There is a problem that does not work well.

In addition, after kneading is completed, in order to discharge the kneaded material, the operator must manually open the cover at the bottom of the chamber and then take out the kneaded material inside and discharge it. This makes the work difficult and time-consuming, which reduces work efficiency. .

To solve this problem, a mixing roll for kneading in which kneading and extrusion are integrated as shown in Figures 1 and 2 has been proposed. [Refer to Republic of Korea Patent Publication No. 10-0763541 (2007.09.27.)]

Referring to Figures 1 and 2, a conventional mixing roll for kneading includes a frame 20, is disposed above the frame 20, and has a material inlet 31 at the top and a kneaded material discharge port 32 at the bottom. A kneading chamber 33 in communication with a kneading housing 30 equipped with a heating means installed in the kneading chamber 33, and a heat medium circulation passage 44 installed inside the kneading housing 30 for kneading. A pair of kneading rotors (40, 42) for kneading the material, an extrusion barrel (50) located below the kneading outlet (32) and equipped with an extrusion die (52) at the tip, and the extrusion barrel (50). It is installed to extrude the kneaded material discharged from the kneading discharge port 32 toward the extrusion die 52 when discharging the kneaded material and rotates backwards during kneading, the extrusion screw 60, the kneading rotors 40 and 42, and the extrusion screw. It consists of a driving means mounted on the frame 20 to rotate (60) and a kneaded material pressurizing cylinder 80 having a pressure plate 82 above the kneading housing 30 to increase the degree of dispersion of the kneaded material. It is done.

In the conventional mixing roll for kneading, an extrusion barrel (50) is installed under a pair of kneading rotors (40, 42), and an extrusion screw (60) is installed to rotate backwards inside the extrusion barrel (50), so that kneading and extrusion are integrated. It is structured so that pressure kneading is possible.

However, in the conventional mixing roll for kneading, there is an empty space 54 between the extrusion screw 60 and the extrusion die 52 inside the extrusion barrel 50, so when the kneaded material is discharged through the outlet 53, this occurs. A load is applied in the empty space 54. At this time, the kneaded material with a load in the empty space 54 generates heat by the continuously rotating extrusion screw 60, causing the physical properties of the element to change, and the rotation speed of the extrusion screw 60 decreases due to the load. There is a problem that the discharge amount is greatly reduced.

In addition, since the outlet side is not equipped with a function to control the temperature of the kneaded material, there is a problem in that the physical properties of the device change depending on the temperature of the kneaded material.

Republic of Korea Patent Publication No. 10-0763541 (2007.09.27.)

In order to solve the above-mentioned problems, the technical problem to be achieved by the present invention is to propose an extrusion cylinder device for kneading that can significantly increase the discharge amount and rotation speed by forming an extrusion screw protruding out of the extrusion die from which the kneaded material is discharged. there is.

In addition, another technical problem to be achieved by the present invention is to propose an extrusion cylinder device for kneading that can be installed by selecting extrusion dies with different sizes and numbers of discharge ports depending on the type of kneaded material.

In addition, another technical problem to be achieved by the present invention is to reduce the discharge load of the kneaded material, prevent changes in the physical properties of the element, and present an extrusion cylinder device for kneading that can significantly improve the rotational speed and discharge amount of the extrusion screw. There is something to do.

In addition, another technical problem to be achieved by the present invention is to propose an extrusion cylinder device for kneading that can automatically control the discharge temperature of the kneaded product to the set temperature by circulating cooling water through a cooling water circulation path formed inside the extrusion die. .

In addition, another technical problem to be achieved by the present invention is to propose an extrusion cylinder device for kneading that can continuously knead a large amount of kneaded material through an automated process.

The problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

As a means to solve the above-described technical problem, the extrusion cylinder device for kneading according to the present invention includes a raw material supply chamber 150 that kneads the input raw materials by two screws rotating in opposite directions and discharges them downward; An extrusion cylinder (170) installed horizontally at the lower part of the raw material supply chamber (150) and having an opening in communication with the raw material supply chamber (150) and a cooling water circulation path (172) formed inside its body; And a chucking mouth 200 installed at one end of the extrusion cylinder 170. In the extrusion cylinder device for kneading, it is installed by fastening to the chucking mouth 200, and an insertion hole 211 is formed through the center. An extrusion die 210 having a plurality of discharge holes 220 formed through the outer edge of the insertion hole 211; It is rotatably installed inside the extrusion cylinder 170, and a spiral blade 182 is formed around the rotation shaft 181 along the longitudinal direction up to the tip 183, and the tip 183 is the extrusion die ( An extrusion screw 180 that is installed to protrude out of the insertion hole 211 of the extrusion die 210 and rotates to discharge the kneaded material through the outlet 220 of the extrusion die 210; And a plurality of bearings 250 installed inside the insertion hole 211 of the extrusion die 210 and rotating while supporting the tip 183 of the extrusion screw 180.

The extrusion cylinder device for kneading may be configured to further include an O-ring 251 that is inserted into grooves on both sides of the bearing 250 and compresses to perform a sealing function.

The extrusion die 210 includes a body fastened to the chucking mouth 200 or installed through a hinge coupling; a circular insertion hole 211 formed through the center of the body into which the tip 183 of the extrusion screw 180 is inserted; and a plurality of outlet ports 220 formed on the outside of the insertion port 211 and formed through the outlet port 220 to be connected to the internal space of the extrusion cylinder 170.

According to the present invention, an extrusion die with a different size and number of discharge ports can be selected and easily installed depending on the type of kneaded material, and the extrusion screw is formed to protrude outside the extrusion die through which the kneaded material is discharged, which can greatly increase the discharge amount and rotation speed. It works.

In addition, by preventing the discharge load of the mixed product from occurring, changes in the physical properties of the device can be prevented, the discharge amount of the mixed material and the rotation speed of the extrusion screw can be greatly improved, and noise during rotation of the extrusion screw can be greatly reduced. .

In addition, by installing an extrusion screw under the kneading rotor and re-introducing and discharging the kneading material according to the forward and reverse rotation of the extrusion screw, the kneading process can be automated and the kneading work can be performed continuously. There is an effect.

In addition, by circulating coolant through a coolant circulation path formed inside the extrusion die, the discharge temperature of the rubber compound can be automatically controlled to the set temperature.

In addition, it is possible to automate a series of processes in which the kneaded material discharged from the automatic tandem mixer for kneading is mixed and then discharged to the extruder.

Additionally, a large amount of kneaded material can be kneaded continuously, mixing time can be reduced, and kneading efficiency can be improved.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

Figure 1 is an internal cross-sectional view of a mixing roll for kneading according to the prior art.
Figure 2 is a partially enlarged view of Figure 1.
Figures 3 to 5 are diagrams of the extrusion cylinder device 100 for kneading according to an embodiment of the present invention.
Figure 3 is a front view of the extrusion cylinder device 100 for kneading,
Figure 4 is a cross-sectional view showing the inside of the extrusion cylinder 170,
Figure 5 is a side view showing the extrusion screw 180 coming out of the insertion hole 211 of the extrusion die 210.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts will be described with similar reference numerals throughout the specification.

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

Example of extrusion cylinder device for kneading

Figures 3 to 5 are diagrams of the extrusion cylinder device 100 for kneading according to an embodiment of the present invention, Figure 3 is a front view of the extrusion cylinder device 100 for kneading, and Figure 4 is the interior of the extrusion cylinder 170. It is a cross-sectional view showing, and Figure 5 is a side view showing the extrusion screw 180 coming out of the insertion hole 211 of the extrusion die 210.

The extrusion cylinder device 100 for mixing receives mixed materials (a mixture of rubber, plastic, waste, waste, etc.) from a mixing device (not shown), mixes them, and then discharges them to an extruder (not shown). It is a device. For example, kneading refers to the process of adding chemical materials or lime to polymer materials such as synthetic resin or rubber and mixing them evenly using heat and machinery.

As shown in Figure 3, the extrusion cylinder device 100 for kneading includes a base 101, drive motors 110 and 160, a reducer 130, a rotating shaft 140, a raw material supply chamber (Chamber 150), and an extrusion It consists of a cylinder (170), an extrusion screw (180), an extrusion die (210), etc.

The extrusion cylinder device 100 for mixing includes a mixing housing (not shown), a rotor (not shown), an extrusion cylinder 170, an extrusion die 210, etc. on one side of the upper part of the base 101. may be arranged, and a drive motor 110, 160, a reducer 130, a gear coupler (not shown), a rotation shaft 140, etc. may be arranged on the other side of the upper part of the base 101.

A rubber pad (not shown) may be formed on the lower part of the base 101 to support and fix the extrusion cylinder device 100 for kneading. Additionally, a driving wheel (not shown) may be installed at the lower part of the base 101 for convenient movement and installation. At this time, the driving wheel may be additionally provided with a brake device that prevents the driving wheel from moving.

The drive motor 110 is a driving source that rotates the extrusion screw 180 of the extrusion cylinder 170 and corresponds to the main motor. In addition, the drive motor 160 is a drive motor that rotates the blades (not shown) of the first and second rotors (not shown) that engage and rotate with each other in the raw material supply chamber (Chamber; 150).

It can be configured by connecting a tapered push belt pulley (Taper Bush Belt Pulley; 120, 121) between the rotation axis of the drive motor 110 and the rotation axis of the reducer 130.

The raw material supply chamber 150 mixes the raw materials introduced through the inlet by two screws (not shown) rotating in opposite directions and discharges them downward.

Below the raw material supply chamber 150, a cylindrical extrusion cylinder 170 with an extrusion screw 180 rotatably installed therein is installed horizontally.

The extrusion cylinder 170 is formed with an opening that communicates with the raw material supply chamber 150 so that the kneaded product in the raw material supply chamber 150 is transferred to the extrusion screw 180.

The extrusion cylinder 170 has a cooling water circulation path 172 formed inside its body, and a cooling water inlet 171 and a cooling water outlet 173 are formed at one end and the other end of the cooling water circulation path 172. At this time, the coolant is repeatedly circulated through the coolant inlet 171, the coolant circulation path 172, and the coolant outlet 173.

The cooling water circulation path 172 receives cooling water from a cooling water supply means (not shown) and circulates it. The cooling water supply means may be controlled by a control unit (not shown). The control unit controls the temperature of the kneaded product by circulating cooling water through the cooling water circulation passage 172 according to a comparison result between the temperature of the kneaded product measured by a temperature sensor (not shown) and the set temperature, thereby adjusting the discharge temperature of the kneaded product to the set temperature. Can be controlled automatically.

Additionally, the extrusion cylinder 170 may form a heating wire (not shown) inside its body. At this time, the heating wire generates heat by a heater (not shown) to increase the temperature of the kneaded material inside the extrusion cylinder 170. At this time, the control unit operates the heater according to a comparison result between the temperature of the kneaded material measured by the temperature sensor (not shown) and the set temperature to control the temperature of the kneaded material through the heating wire.

Subsequently, a dice head (190), a chucking mouth (200), an extrusion die (210), etc. are installed on one side of the extrusion cylinder (170).

The chucking mouth 200 may be fastened to the die head 190 with a bolt 240 and a nut 241 or may be installed using a hinge. A circular hole is formed in the center of the chucking mouth 200, and this circular hole may be formed to have the same size as the inner diameter of the extrusion cylinder 170.

The extrusion die 210 may be installed on the front of the chucking mouth 200. The extrusion die 210 may be fastened to the chucking mouth 200 with a bolt 230 or may be installed using a hinge.

The extrusion die 210 includes a body fastened to the chucking mouth 200 or installed through a hinge combination, and a circular insertion hole formed through the center of the body into which the tip 183 of the extrusion screw 180 is inserted. It includes (211) and a plurality of outlet ports (220) formed on the outside of the insertion port (211) and formed through the outlet port (220) to be connected to the internal space of the extrusion cylinder (170).

The insertion hole 211 is formed through the center of the extrusion die 210. The insertion hole 211 may be formed smaller than the inner diameter of the extrusion cylinder 170. The tip 183 of the extrusion screw 180 is inserted through the insertion hole 211.

A plurality of bearings 250 may be installed inside the insertion hole 211. At this time, the plurality of bearings 250 serve to support and rotate the distal end 183 of the extrusion screw 180.

O-rings 251 may be installed on both sides of the bearing 250, respectively. The O-ring 251 is inserted into grooves on both sides of the bearing 250 and compressed to perform a sealing effect.

The extrusion screw 180 is rotatably installed inside the extrusion cylinder 190, and a spiral blade 182 is formed around the rotation axis 181 along the longitudinal direction up to the tip 183.

The extrusion screw 180 is installed so that one end 183 protrudes out of the insertion hole 211 of the extrusion die 210. At this time, the insertion hole 211 is formed larger than the diameter of the tip 183 of the extrusion screw 180 so that the tip 183 can be inserted and rotated.

The tip 183 of the extrusion screw 180 rotates while being supported by the plurality of bearings 250, and the kneaded material inside is driven by the O-rings 251 installed on both sides of the bearings 250. It is sealed to prevent it from leaking.

The extrusion screw 180 installed inside the extrusion cylinder 170 rotates to discharge the kneaded material through the outlet 220 of the extrusion die 210.

Meanwhile, in the present invention, the temperature of the kneaded product can be controlled by forming a cooling water circulation path (not shown) inside the body of the extrusion die 210 to circulate the cooling water. At this time, the cooling water is supplied by a cooling water supply means, and the temperature and circulation can be controlled by a control unit (not shown). The control unit controls the temperature of the kneaded product by circulating cooling water through the cooling water circulation path according to a comparison result between the temperature of the kneaded product measured by the temperature sensor and the set temperature.

Therefore, by circulating the coolant through the coolant circulation path formed inside the extrusion die 210, the discharge temperature of the kneaded material can be automatically controlled to the set temperature.

According to the present invention, the distal end 183 of the extrusion screw 180 is installed to protrude out of the insertion hole 211 of the extrusion die 210 and is rotationally supported by the bearing 250, so that the extrusion cylinder 170 The problem of internal kneading material accumulating and causing load has been completely eliminated. Therefore, it is possible to fundamentally prevent changes in the physical properties of the element that occur due to load inside the extrusion cylinder when discharging the kneaded material, and the rotation speed and discharge amount of the extrusion screw can be greatly improved.

The extrusion cylinder device for kneading according to the present invention configured as described above changes the structural shape of the extrusion screw and the extrusion die so that no unnecessary space other than the discharge passage is created between the extrusion screw and the extrusion die, thereby reducing the discharge load of the kneaded rubber compound. The technical problem of the present invention can be solved by preventing changes in the physical properties of the device and greatly improving the rotation speed and discharge amount of the extrusion screw.

In addition, the technical problem of the present invention can be solved by automatically controlling the discharge temperature of the rubber compound to the set temperature by circulating coolant through a coolant circulation path formed inside the extrusion die.

The preferred embodiments of the present invention described above have been disclosed to solve technical problems, and those skilled in the art can make various modifications, changes, additions, etc. within the spirit and scope of the present invention. This will be possible, and such modifications and changes should be regarded as falling within the scope of the patent claims below.

100: Extrusion cylinder device for kneading
101: Base 102: Side Plate
110: Driving motor (Motor)
120, 121: Taper Bush Belt Pulley
130: Reducer 140: Rotation shaft
150: Raw material supply chamber (Chamber) 160: Drive motor (Motor)
170: Extrusion cylinder (barrel) 171: Coolant inlet
172: Cooling water circulation path 173: Cooling water outlet
180: extrusion screw 181: rotation shaft
182: spiral blade 183: tip
190: Dies Head 200: Chucking Mouse
210: Extrusion die 211: Insertion hole
220: outlet 230: bolt
240: bolt 241: nut
250: bearing 251: O-ring

Claims (3)

A raw material supply chamber 150 that kneads the input raw materials by two screws rotating in opposite directions and discharges them downward; An extrusion cylinder (170) installed horizontally at the lower part of the raw material supply chamber (150) and having an opening in communication with the raw material supply chamber (150) and a cooling water circulation path (172) formed inside its body; and a chucking mouth 200 installed at one end of the extrusion cylinder 170. In the extrusion cylinder device for kneading,
An extrusion die 210 that is installed by fastening to the chucking mouth 200, has an insertion hole 211 formed through it in the center, and has a plurality of discharge holes 220 formed through it on the outside of the insertion hole 211;
It is rotatably installed inside the extrusion cylinder 170, and a spiral blade 182 is formed around the rotation shaft 181 along the longitudinal direction up to the tip 183, and the tip 183 is the extrusion die ( An extrusion screw 180 that is installed to protrude out of the insertion hole 211 of the extrusion die 210 and rotates to discharge the kneaded material through the outlet 220 of the extrusion die 210; and
A plurality of bearings 250 installed inside the insertion hole 211 of the extrusion die 210 and rotating while supporting the tip 183 of the extrusion screw 180;
An extrusion cylinder device for kneading comprising a.
In claim 1,
The extrusion cylinder device for kneading,
An O-ring 251 that is inserted into grooves on both sides of the bearing 250 and compresses to perform a sealing function;
An extrusion cylinder device for kneading further comprising.
In claim 1,
The extrusion die 210 is,
A body fastened to the chucking mouse 200 or installed through a hinge coupling;
a circular insertion hole 211 formed through the center of the body into which the tip 183 of the extrusion screw 180 is inserted; and
A plurality of outlet ports 220 are formed on the outside of the insertion port 211 and are formed through the outlet port 220 to be connected to the internal space of the extrusion cylinder 170;
An extrusion cylinder device for kneading comprising a.