KR20170012663A - Apparatus for forming pellet - Google Patents

Abstract

Provided is an apparatus for molding pellets, capable of preventing failures in distribution of raw materials in an extruder during the production of molded articles using the extruder. To this end, the apparatus for molding the pellets comprises: a driving motor; a housing; a power delivering unit converting a rotary motion of the driving motor into a linear reciprocating motion after receiving power from the driving motor; an extrusion unit positioned at a terminal of the power delivering unit and releasing supplied materials for molding the pellets after compressing the same; and a guide device guiding the pellets released after undergoing an extrusion molding process by both the extrusion unit and a material supply unit which supplies the pellet molding materials to the extrusion unit.

Description

[0001] Apparatus for forming pellet [0002]

The present invention relates to a pellet molding apparatus, and more particularly, to a pellet molding apparatus capable of continuously producing a solid refuse fuel (SRF) in the form of a pellet for a long period of time, To a pellet molding apparatus.

Demand and production of electrical and electronic products used in everyday life are increasing year by year, and electrical and electronic products that are discarded are continuously increasing, resulting in a large amount of industrial waste.

When these industrial wastes are neglected, they are polluted by the environment, so they are disposed of by incineration or landfill. These waste disposal methods not only cause secondary environmental pollution but also have a limitation in the area of landfill that can be filled with wastes. In addition, in the process of selecting landfill sites, local conflicts and residents living near the landfill sites There is a considerable complication in selecting the landfill site because it is confronted with the problem that complaints occur.

Therefore, if industrial wastes can be recycled and recycled at the industrial site, the difficulties of preventing environmental pollution and disposing of wastes can be solved. In addition, the members used in various industries are depleted in the future due to limited reserves of the resources that are used as raw materials, so that the recycling of resources can prevent environmental pollution and provide economical advantages.

In particular, recycling waste materials is economically feasible in terms of producing materials since the initial development cost of resources can be reduced.

Accordingly, if a large amount of waste generated in the waste electrical and electronic products can be recycled and used, it is possible to overcome difficulties related to the environmental pollution caused by the waste materials and the difficulties associated with the selection of the landfill site, can do.

Accordingly, it is an important task to recycle the case of the electrical and electronic product that is made of various synthetic resin materials and discarded. To this end, a recycling facility for electrical and electronic products is used.

In the recycling facilities for electrical and electronic products, parts that can not be crushed and crushed during the pretreatment process are separated, and then, in the crushing and crushing process, the ferrous metal, non-ferrous metal, and synthetic resin are separately sorted and sent to the crushing system for recycling It is crushed to the state of being.

Among the pulverized synthetic resins, urethane can be used as fuel by pressurizing in the form of pellets.

The conventional pelletizing apparatus includes a conveying screw for conveying waste, a material extruding portion for extruding the waste conveyed through the conveying screw into a compression ring by using an extrusion screw, and a power transmission portion for transmitting an external rotational force to the material extruding portion And a heat molding unit for applying heat to the waste extruded by the material extruding unit and molding the waste into pellets to solidify the waste.

In such a pelletizing apparatus, the pulverized material is entangled in the extruding screw due to the dispersion failure of the pulverized product, or the screw engagement with the mixture becomes unstable, whereby pulsation occurs in the rotation of the screw and the mixture causes excessive foaming or defective foaming There is a case to discard. In addition, in the production of this type of foamed material, the dispersion of the pulverized material inside the extruder becomes poor, and the pulverized material is intensively pressed to a part of the compressed ring, resulting in clogging of the compressed ring.

Due to such a problem, in the conventional pelletizing apparatus, the production speed is slow, the parts may be damaged due to the wave pressure, and due to the characteristic of the urethane which is weak in heat, the urethane may be exposed to high temperature and bad pellets may be generated. It can not be continuously produced.

Korean Patent Publication No. 10-2013-0133527 Korea Patent No. 10-1409506

An object of the present invention is to provide a pellet molding apparatus capable of preventing defective dispersion of a raw material in an extruder when a molded article is manufactured using an extruder, and continuously producing a pellet mold having no defective ratio for a long time.

It is another object of the present invention to provide a pellet molding apparatus capable of easily cooling the heat generated by friction of parts inside a molding apparatus, thereby preventing breakage of parts constituting the apparatus.

It is still another object of the present invention to provide a pellet molding apparatus capable of delivering an extruded solid fuel molding to an intended place in a pellet form.

Technical features of the pellet molding apparatus for achieving the object intended by the present invention include a drive motor; housing; Power transmission means for receiving the power of the drive motor and converting the rotational motion of the drive motor into a linear reciprocating motion; A pushing means for pushing and discharging the supplied pellet forming material located at the terminal of the power transmitting means; Material supplying means for supplying the pellet forming material to the extruding means, and guide mechanism for guiding pellets extruded and discharged by the extruding means.

The housing is detachably fixed to the main body by means of fasteners such as bolts and nuts so that the main body and the lid can separate and contact with each other in a horizontal plane and a vertical plane so as to smoothly perform maintenance of the power transmission means.

The power transmitting means includes a crankshaft having eccentric cams, both ends of which are rotatably fixed to the housing and are rotated by the power of a driving motor; A connecting rod interlocked with the crankshaft; And a sliding shaft which is rotatably contacted to one end of the free end of the connecting rod and is supported so as to be movable in a horizontal direction in the housing.

The crankshaft has at least two eccentric cams, and a portion intermediate between the two eccentric cams is supported on the housing to distribute the load.

An intermediate portion supported by the housing is formed with a bearing or bush, preferably the bush has an oil groove.

The eccentric cam is provided with a vibration preventing hole, so that noise and vibration during driving can be alleviated.

The crankshaft is provided with an oil groove for lubrication and cooling for eliminating frictional heat generated on the contact surface with the eccentric cam.

Further, the free end of the connecting rod is further provided with an oil groove for lubrication and cooling in order to eliminate frictional heat generated at the contact surface of the sliding shaft, which is rotatably contacted.

The power transmitting means preferably has a flywheel fixed to an end portion of the crankshaft at a position opposite to the electric pulley so that the extruding efficiency of the extruding means can be increased with a smooth rotation torque and a stable rotational force.

On the other hand, the sliding shaft is slidably supported by a support structure selected from a supporting structure, for example, a bearing or a bush.

The bush is preferably provided with a bush cover for receiving the outer circumferential surface of the sliding shaft, and a water pocket is formed on the outer circumferential surface of the bush cover to prevent the component from being burned by the driving frictional heat. The lubricating and cooling action can be performed on the entire inner circumferential surface in contact with the sliding shaft.

The extrusion means includes an extrusion hole fixed to one end of the sliding shaft and capable of reciprocating in a horizontal direction; A material supply port having a pressurizing chamber for accommodating an end of the extrusion hole, the material being supplied from the material supply means to the upper portion of the pressurizing chamber; And a pushing block having an extrusion die unit arranged so that the extrudate can be discharged in a direction in which the extrusion hole is operated.

One end of the extrusion hole may be fixed to the end of the sliding shaft, and the two extensions may be fixed at a position symmetrical on the concentric circle, preferably at least three concentric circles.

An air chamber is formed so that an extrusion hole fixed to the sliding shaft is slidably inserted into and supported by a supporting member fixed to the pressing block, and the supporting member can reduce a friction area with the sliding shaft.

The extrusion die unit includes an inner case for accommodating the extrusion die and an outer case for receiving the inner case and being fixed to the pressure block.

The extrusion die is constructed by separating into a first die, a second die and a third die.

The first die, the second die and the third die are formed with extrusion holes corresponding to the number of the extrusion holes provided in the sliding shaft.

Such an extrusion hole forms a space that becomes gradually narrower from the inlet side to the outlet side in order to improve the extrusion efficiency of the pellet molding material.

Extrusion dies separated by three dies are effective for maintenance. That is, since the extrusion die generates high heat in accordance with the extrusion molding, the pellet molding material may cause fouling or fraying due to frictional heat. Therefore, periodic replacement is required for maintenance, When the die is integrated with one die, the entire die is exchanged. However, in the structure in which two or more dies are detachably coupled, it is economical in terms of maintenance from the viewpoint of replacing only the die that has been damaged or burned.

Such an extrusion die unit requires a cooling means capable of cooling the heat generated when the material for pellet molding passes through the extrusion die due to the extrusion blow of the extrusion hole.

As a cooling means as described above, a water pocket is formed on the contact surface between the inner case and the outer case to extend the life of the extrusion die and to prevent the defective rate of extrusion-molded pellets.

The material supply port is formed with a taper which is smaller in space of the lower part connected to the pressurizing chamber than a space in the upper part connected to the second conveying screw. In the inner circumferential surface of the taper, a plurality of pellet forming materials When the pellet molding material is subjected to excessive pressure by the extrusion hole, a part of the pellet molding material flows backward and can relieve excessive pressure.

The material feeding means includes a first feeding screw disposed at a lower portion of a storage tank for storing the pulverized pelletizing material after the pretreatment process is completed and fixed to the lower portion of the hopper through which the pelletizing material is fed, And a second conveyance screw fixed in a vertical direction to the terminal from which the material is discharged from the first conveyance screw and fixed in the vertical direction to the press block.

The guide mechanism for guiding the pellets extruded and discharged by the material supply means and the extrusion means comprises: a base; A guide for guiding the pellets fixed and discharged to the base; A rotating member rotatably fixed to the base so that the extruded and continuously discharged pellets can maintain a molded shape; And pressing means for allowing the rotating member to contact the surface of the pellet guided by the guide.

Here, the pressing means for allowing the rotating member to contact the surface of the pellet guided by the guide may be a structure in which the weight member is fixed to the rotating member at a position where the rotating member is displaced from the center of the pellet from the center where the rotating member is fixed to the base .

The weight member is rotated to face the pellet about the position where the rotating member is fixed to the base, so that the rotating member can contact the pellet.

Another pressing means for allowing the rotating member to contact the surface of the pellet guided by the guide is such that one end is supported on the base at a position where the rotating member is displaced from the center of the pellet from the center where the rotating member is fixed to the base, And the end portion may include an elastic member such as a tension coil spring supported by the rotating member.

Such an elastic member is rotated to face the pellet about the position where the rotating member is fixed to the base, so that the rotating member can contact the pellet.

According to the pellet forming apparatus of the present invention, pellets can be produced using pulverized wood such as sawdust as well as waste synthetic resin containing urethane.

In addition, a stable driving force is provided by applying a flywheel while preventing frictional heat at the part where the parts are rubbed or preventing the parts from being damaged or burned through effective cooling action, and at least three extrusion By forming the pellet using the pellet, the speed at which the pellet is manufactured is increased, and the productivity is improved.

In addition, by pelletizing the material with an instantaneous pressure, it is possible to produce pellets with low adhesion between particles, and to form high-density pellets, so that high-purity fine pellets can be produced.

The pellet molding apparatus according to the present invention can increase the manufacturing speed of the pellet, lower the partial temperature of the component and prevent excessive pressure from being applied to a part of the pellet, thereby preventing the production of the defective pellet and the breakage of the component.

In addition, since a high-density pellet can be molded, a high-pellet pellet can be produced, and a flywheel can be applied to stably drive the pellet.

Further, the solid fuel molded product extruded by the guide mechanism can be transferred to a desired position and provided as a pellet.

Fig. 1 is a diagram showing a stereoscopic view
Fig. 2 is a perspective view of a three-dimensional figure of the housing of the present invention,
FIG. 3 is a perspective view of a three-dimensional figure in a state in which a part of the housing of the present invention is cut.
Fig. 4 is a plan view
FIG. 5 is a diagram showing an example of a three-
6 is an enlarged partial cross-sectional view of the main portion of the present invention
Fig. 7 is a drawing showing an example of the power transmission means of the present invention
(A) is a three-dimensional figure
(B) is a cross-section
(C) is a flat section
8 is a view showing an example of a supporting structure of the present invention
(A)
(B) is a section
Fig. 9 is a schematic view showing a part of a three-dimensional figure extracted from the extrusion hole of the present invention
(A)
(B) is a section
Fig. 10 is a cross-sectional view of a three-
11 is an excerpt of an extrusion die of the present invention
(A) is the separated three-dimensional figure
(B) is a front section
12 is a cross-sectional view of the extrusion die of the present invention
13 is a view showing an embodiment of the pressing means of the present invention
(A)
(B) is a front view
14 is a view showing another embodiment of the pressing means of the present invention
(A)
(B) is a front view

The features and advantages of the present invention will become more apparent from the detailed description set forth below when taken in conjunction with the accompanying drawings.

Hereinafter, embodiments of the present invention will be described.

The present invention comprises a drive motor (M1), a housing (1), a power transmitting means, an extruding means and a guide mechanism.

The housing 1 is formed in such a manner that the main body 10 and the lid 11 can be separated from the horizontal surfaces 101 and 110 while being in contact with the vertical surfaces 102 and 111 and a coaxial semicircular groove is formed in the horizontal surfaces 101 and 110 So that the power transmitting means is seated.

A bracket 100 is formed on a horizontal surface 101 of the main body 10 in contact with the lid 11. A bracket 112 is provided on a horizontal surface 110 of the lid 11 at a position corresponding to the bracket 100 And the lid 11 is detachably fixed to the main body 10 by fasteners such as bolts and nuts.

5 to 7, the power transmitting means receives the power of the driving motor M1 to convert the rotational motion of the driving motor M1 into a linear reciprocating motion. The power transmission means is constituted by an electric pulley TP, a crankshaft 2, a connecting rod 3, and a sliding shaft 4. [

The electric pulley TP receives the power of the drive motor M1 by the belt V and rotates the crankshaft 2. [

The crankshaft 2 is provided with two eccentric cams 20 while the flywheel F is fixed at a position opposite to the electric pulley TP. The two eccentric cams 20 are formed at the positions where the cam driving intersects with each other so that the molding extrusion pressure can be prevented from concentrating on the crankshaft 2.

In order to distribute the load, the intermediate portion between the two eccentric cams 20 is supported on the housing 1 by the bushes 23, and both ends of the crankshaft 2 are supported on both walls of the housing 1 And is rotated by the power of the drive motor M1.

The connecting rod 3 is provided with oil grooves 30 and 31 for lubrication and cooling for reducing frictional heat generated on the contact surface with the eccentric cam 20. [

The oil groove 30 is formed through the bush 21 so as to penetrate both sides of the connecting rod 3 and then reach the outer peripheral surface of the eccentric cam 20.

Specifically, the oil groove 30 penetrating both sides of the connecting rod 3 extends through the inner peripheral surface of the bush 21 in a direction perpendicular to the bush 21, and the bush 21 has an annular oil The grooves 30a form a continuous space with the oil groove 30. Four oil grooves 30b penetrating from the outer circumferential surface forming the oil groove 30a toward the inner circumferential surface where the eccentric cam 20 is located are continuously formed to form an oil film on the outer circumferential surface of the eccentric cam 20 .

The oil grooves 30, 30a, and 30b can supply lubricant that can minimize the friction generated at the contact surfaces of the connecting rod 3 and the eccentric cam 20. [

The oil groove 31 is formed through the contact member 34 so as to penetrate both sides of the connecting rod 3 and then reach the contact surface with the sliding shaft 4. [

More specifically, the oil groove 31 penetrating both sides of the connecting rod 3 extends in a direction perpendicular to the inner peripheral surface of the contact member 34, and the contact member 34 is continuous with the oil groove 31 The oil groove 31a penetrating the inner circumferential surface of the sliding shaft 4 through which the sliding shaft 4 is inserted and the oil groove 31b formed in the contact member 34 are formed continuously to form the contact member 34, An oil film can be formed on the contact surface of the sliding shaft 4.

The oil grooves 31, 31a, and 31b can supply lubricant that can minimize the friction generated at the contact surface of the sliding shaft 4, which is free to rotate at one end at the free end of the connecting rod 3 .

The connecting rod 3 and the eccentric cam 20 are fixed by covers 33 and 33a which are fixed by bolts 32 on both sides of the bolt 32, It is possible to prevent the engagement state from being released due to the vibration due to the driving of the eccentric cam 20. [

Three eccentric bores 22, 22a, 22b are formed in the eccentric cam 20, so that noise and vibration during driving can be mitigated. Here, the number of the anti-vibration holes is not specified, and may be formed in an appropriate size and number according to the design conditions of the system.

The contact member 34 is made of a material having a high abrasion resistance so that one side thereof is formed in a hemispherical shape so that the sliding shaft 4 is rotatably contacted.

A spherical body 40 rotatably fixed to the contact member 34 of the connecting rod 3 is formed at one end of the sliding shaft 4 and three fixed bodies 40, The grooves 41 are formed at a constant depth.

The sliding shaft 4 is rotatably fixed by a cover 36 fixed by a bolt 35 fastened to the crankshaft 2 in a state of being in contact with the contact member 34 of the connecting rod 3 And is horizontally supported on the housing 1 so as to be slidable by the support structure 5 as shown in Fig.

As shown in FIG. 8, the support structure 5 includes a bush 50 and a bush cover 51.

An annular oil groove 500 is formed along the outer peripheral surface at the center of the outer peripheral surface of the bush 50 and four oil grooves 500a continuous from the oil groove 500 through the inner peripheral surface are perforated in all directions, A spiral oil groove 500b continuous with the oil groove 500a is formed.

The bush cover 51 is formed with an annular recessed portion 510 on the outer circumferential surface thereof to form a water-cooled water pocket 511. An oil groove 512 is pierced from the outer circumferential surface to the inner circumferential surface at the upper center, An oil drain groove 513 penetrating from the outer circumferential surface to the outer circumferential surface is formed.

The support structure 5 is configured such that the cooling oil supplied to the oil groove 512 flows into the oil groove 500 and then flows into the oil groove 500b formed on the inner peripheral surface through the oil groove 500a formed in each of the four directions It is possible to perform lubrication and cooling action on the entire surface where the sliding shaft 4 and the bush 50 come into contact with each other and the whole surface with which the bush 50 and the bush cover 51 come into contact, And the cooling oil is circulated through the oil drain groove 513.

The extrusion means is located at the end of the power transmission means and presses and discharges the supplied pellet molding material. The extrusion means is composed of an extrusion hole 6 and a pressure block 7 which are fixed to one end of the sliding shaft 4 and can reciprocate horizontally.

9, the extrusion hole 6 has a first protrusion 61 protruding from the side surface of one end portion with an inclined surface 60 and a second protrusion 61 protruding from the surface of the first protrusion 61 in a triangular pyramid shape, (62) is formed.

The first protrusion 61 having the inclined surface 60 and the second protrusion 162 protruding in the triangular shape improve the extrusion efficiency when the extrusion hole 6 extrudes the pellet forming material.

Such an extrusion hole 6 is fixed to three fixing grooves 41 formed on one side end surface of the sliding shaft 4 and is arranged concentrically and is slidably inserted into the pressing block 7, do.

The press block 7 is composed of a main body 70, a pressurizing chamber 71, a support member 72, a material supply port 73 and an extrusion die unit 8.

The main body 70 has a pressurizing chamber 71 formed therein and the support member 72, the material supply port 73 and the extrusion die unit 8 are assembled and fixed to the rear surface of the housing 1. [

The pressurizing chamber 71 is located in the end portion where the extrusion hole 6 reciprocates in the pressurizing block 7 and is supported by the support member 72 and the extrusion die unit 8 in the axial direction in which the extrusion hole 6 moves And a material supply port 73 is formed at an upper portion of the pellet.

The support member 172 is fixed to the inlet side of the pressure block 7 so that the bush 75 supports the extrusion hole 6 so as to be slidably movable. The bush 75, which contacts the outer circumferential surface of the extrusion hole 6, An air hole 750 which is helical and an air chamber 770 which reduces frictional heat are formed on the inner circumference of the extrusion hole 6 so as to reduce the friction area of the extrusion hole 6,

10, a taper 730 is formed in the material supply port 73 so that the lower space connected to the pressurizing chamber 71 is smaller than the space in the upper portion. In the inner peripheral surface of the taper, A plurality of counterflow grooves 731 capable of flowing back the pellet forming material are formed so that when the pellet forming material in the pressurizing chamber 71 is subjected to excessive pressure by the extrusion hole 6, To the material supply port (73).

11, the extrusion die unit 8 is constituted by an extrusion die 80, an inner case 81, and an outer case 82. As shown in Fig.

The extrusion die 80 is divided into a first die 801, a second die 802 and a third die 803 and sequentially assembled in the inner case 81.

The first die 801, the second die 802 and the third die 803 are respectively provided with three first extruding holes 804 corresponding to the number of the extrusion holes 6 provided in the sliding shaft 4 A second extrusion hole 805, and a third extrusion hole 806 are formed.

The first extrusion hole 804, the second extrusion hole 805, and the third extrusion hole 806 form a space that narrows gradually from the inlet side to the outlet side in order to improve the extrusion efficiency of the pellet molding material.

12, the diameter D1 of the first extrusion hole 804 is equal to the diameter D2 at the inlet side of the second extrusion hole 805, and the diameter D1 at the outlet side of the second extrusion hole 805 The diameter D3 of the third extrusion hole 806 is smaller than the diameter D2 of the inlet side and the diameter D4 of the third extrusion hole 806 is formed to be equal to the diameter D3 of the outlet side of the second extrusion hole 805. [

The inner case 81 is formed with an annular recessed portion 810 along the outer circumferential surface thereof and inserted into the outer case 82.

The outer case 82 is formed with cooling water grooves 820 extending from the outer circumferential surface to the inner circumferential surface so that the inner case 81 and the water pocket 830 are formed by the recessed portion 810 formed in the inner case 81, In the state of forming the pressing block 7.

On the other hand, the material supply means for supplying the material for pellet molding to the material supply port 73 is disposed at the bottom of the storage tank (not shown) in which the pre-processing step is completed and the pulverized material for pellet molding is stored, A first conveying screw 76 which is fixed in the horizontal direction while a lower end of a hopper (not shown) to which the material is fed, and a second conveying screw 76 which is fixed in the vertical direction to the terminal from which the material is discharged from the first conveying screw 76, And a second conveying screw 77 fixed in a vertical direction to the second conveying screw 77.

The first conveyance screw 76 and the second conveyance screw 77 each have motors M2 and M3 controlled to be driven simultaneously.

As shown in FIG. 13, the guide mechanism 9 for guiding the pellets P, which are extruded by the extrusion means and discharged, includes a base 90, guides 91 and 91a arranged continuously in the horizontal direction, 92, and pressing means.

The base 90 is formed in a plate-like shape, and a plurality of the guide members 91, the rotary member 92 and the pressing means are fixed at predetermined intervals.

The guide 91 is fixed in a horizontal direction to a base 90 which is in the shape of a round bar and is continuously arranged at a position corresponding to the first and second third extrusion holes 804, 805 and 806 of the extrusion die 80, And the end portion is continuously provided in the discharge port 74 to guide the pellet P to be discharged after being extruded.

The rotary member 92 is rotatably fixed to the base 90 by a fixing shaft 922 with a guide 920 and a contact end 921 formed therein.

The guide 920 cooperates with the guide 920 fixed to the base 90 to guide the pellet P to the pellet P under an appropriate pressure so that the extruded pellet P can maintain its molded shape.

The contact end portion 921 comes into contact with the base 90 at an appropriate position to limit the range in which the rotation member 92 rotates.

The rotary member 92 is further provided with a pressing means for maintaining an appropriate contact pressure.

The pressing means is fixed to the end of the lever 923 at a position deviating from the center of the pellet P from the center where the rotary member 92 is fixed to the base 90 while the lever 922 is fixed to the rotary member 92 (924).

The weight member 924 rotates the rotary member 92 toward the pellet P about the fixed shaft 922 fixed to the base 90 so that the guide 920 of the rotary member 92 is pellet- (P).

Fig. 14 shows another embodiment of the pressing means.

The pressing means referred to in this figure is a tension coil spring and one end of the rotating member 92 is supported on the base 90 at a position deviating from the center of the pellet P from the center where the rotating member 92 is fixed to the base 90, And the other end is composed of an elastic member 925 supported by the rotary member 92. [

This elastic member 924 rotates the pellet P toward the center of the position where the rotary member 92 is fixed to the base 90 so that the guide 920 of the rotary member 92 is pushed toward the pellet P, As shown in Fig.

Hereinafter, the operation state of the present invention will be described.

The pellet molding material is injected into the first conveying screw 76 while the driving motor M1 and the motors M2 and M3 are driven.

As the material for pellet molding to be applied to the present invention, waste synthetic resin including urethane is used. The material for pellet molding includes a pulverizing step for finely pulverizing the pulverized material to a small size, a washing step for washing the pulverized material transferred from the pulverizing step, and a dehydrating step for removing water from the pulverized material discharged from the washing step The supplied waste synthetic resin pulverized material is introduced from the storage tank.

The pellet forming material introduced into the first conveyance screw 76 is supplied to the pressurizing chamber 71 through the material feed port 73 of the press block 7 by the second conveyance screw 77.

The pellet forming material supplied to the pressurizing chamber 71 is supplied to the pressurizing chamber 71 in a primarily compressed state while passing through the material supply port 73 in which the taper 730 is formed so that the lower chamber is gradually narrowed .

The power of the drive motor M1 is transmitted to the belt V and the transmission pulley TP to rotate the crankshaft 2. At the same time, the eccentric cam 20 fixed to the crankshaft 2 is rotated And the connecting rod 3 is operated.

A sliding shaft 4 which is rotatably and rotatably contacted with the contact member 34 at the tip of the connecting rod 3 is provided on the support structure 5 fixed to the housing 1 so as to be capable of reciprocating movement, Is reciprocated.

An extrusion hole 6 which is fixed to an end portion of the sliding shaft 4 and is slidably mounted on a supporting member 72 fixed to the pressing block 7 is provided in the pressing chamber 71, To the extrusion die (8).

At this time, the noise and vibration generated by the operation of the eccentric cam 20 are appropriately eliminated by the vibration preventing grooves 22, 22a, 22b formed in the eccentric cam 20.

The cooling oil supplied through the oil groove 30 causes a lubricating action to reduce frictional resistance between the connecting rod 3 and the bush 21 and the cooling oil supplied through the oil groove 31 passes through the contact member The frictional resistance between the sliding shaft 4 and the spherical body 40 of the sliding shaft 4 is reduced.

The lubricating action when the sliding shaft 4 reciprocates is made by the lubricating oil supplied to the contact surface between the sliding shaft 4 and the bushing 50 through the oil groove 512, The frictional heat generated in the support structure 5 by the friction of the bush 50 is appropriately cooled by the cooling water supplied to the water pocket 511 formed by the recessed portion 510 of the bush cover 51. [

When excessive extrusion pressure acts on the extrusion die 8 due to the extrusion action of the extrusion hole 6, a minute amount of the pelletizing material in the pressurizing chamber 71 flows into the backflow groove 71 of the material supply port 73 And then re-supplied.

The pellet molding material extruded into the extrusion die 80 by the extrusion hole 6 is supplied to the first die 801 and the second die 802 and the first extrusion hole 804 of the third die 803, 2 through the second extrusion hole 805 formed to have a smaller diameter at the outlet side than the diameter D2 at the inlet side while being passed through the second extrusion hole 805 and the third extrusion hole 806 sequentially. So that a state of being formed is formed.

The frictional heat generated when the pellet forming material is molded while passing through the extrusion die by the extrusion blow of the extrusion hole 6 is cooled by the water jacket 830 formed by the inner case 81 and the outer case 82 .

The pellets P which are extruded and discharged from the extrusion die 80 are molded into a continuously integrated cylindrical shape and guided to the guide mechanism 9 through the discharge port 734.

Specifically, the extruded pellet P is guided to the guide 91 through the discharge port 734. When the pellet continuously pushed out by the extrusion pressure is moved out of the end of the guide 91, It is automatically cut and drops.

At this time, the weight member 923 or the elastic member 924 causes the rotary member 92 to be rotated about the fixed shaft 922, so that the guide 920 moves the upper portion of the pellet P to a proper pressure So that the pellets P can be discharged while maintaining the molded state.

The embodiments described above have been described with reference to the limited embodiments and drawings. It will be apparent to those skilled in the art that the technical scope of the present invention is not limited to the embodiments described and illustrated in the drawings, It will be understood that various modifications and alterations may be made within the scope of equivalents, and that such modifications are included in the technical scope of the present invention.

M1, M2, M3: Drive motor TF: Electric pulley
F: flywheel W: wire
1: housing 10:
101: horizontal plane 102: vertical plane
11: cover 110: horizontal plane
111: Vertical plane 100, 111: Bracket
2: crankshaft 20: eccentric cam
21: bushes 22, 22a, 22b: vibration preventing holes
23: Bush 3: Connecting rod
30, 30a, 30b: Oil groove 31, 31a, 31a: Oil groove
32: bolts 33, 33a: cover
34: contact member 35: bolt
36: Cover 4: Sliding shaft
40: Spherical body 41: Fixing groove
5: Support structure 50: Bush
51: Bush cover 500, 500a, 500b: Oil groove
510: inlet part 511: water pocket
512: Oil groove 513: Oil drain groove
6: extrusion hole 60: inclined surface
61: first projection 62: second projection
7: pressing block 70:
71: pressure chamber 72: support member
73: Material supply port 74: Outlet
75: Bush 720: Air chamber
730: Taper 731: Backflow groove
750: Air hole 8: Extrusion die unit
80: extrusion die 81: inner case
82: Out case 801: First die
802: second die 803: third die
804: first extrusion hole 805: second extrusion hole
806: Third extrusion hole 810:
820: cooling water groove 830: water pocket
9: guide mechanism 90: base
91: guide 92: rotating member
920: guide 921: contact end
922: fixed shaft 923: weight member
924: elastic member

Claims (19)

A drive motor M1;
A housing (1);
Power transmission means for receiving the power of the drive motor (M1) and converting the rotational motion of the drive motor (M1) into a linear reciprocating motion;
A pushing means for pushing and discharging the pellet forming material supplied from the material supplying means while reciprocating while receiving the power of the power transmitting means;
And a guide mechanism for guiding pellets extruded and discharged by the extrusion means.
The housing (1) according to claim 1, wherein the housing (1) is detachably fixed while the main body (10) and the lid (11) are in contact with the horizontal surfaces (101, 110, Gt; a < / RTI >
The power transmission device according to claim 1, wherein the power transmitting means includes a crankshaft (2) having eccentric cams (20) and both ends of which are rotatably fixed to the housing (1) and rotated by the power of the drive motor (M1);
A connecting rod (3) interlocked with the crankshaft (2);
And a sliding shaft (4) which is rotatably contacted at one end to the free end of the connecting rod (3) and is supported so as to be movable in the horizontal direction in the housing (1).
The crankshaft (2) according to claim 3, wherein the crankshaft (2) has at least two eccentric cams (20), and the intermediate part between the two eccentric cams Wherein the pelletizing device comprises:
The pellet molding apparatus according to claim 4, wherein the eccentric cam (20) is provided with vibration preventing holes (22, 22a, 22b) so as to mitigate noise and vibration during driving.
4. The pellet-forming apparatus according to claim 3, wherein the connecting rod (3) is formed with oil grooves (30, 30a, 30b) reaching a contact surface with the eccentric cam (20) to enable lubrication and cooling.
4. The sliding device according to claim 3, wherein oil grooves (31, 31a, 31b) are formed on the contact surface of the sliding shaft (4) at one end of the free end of the connecting rod Wherein the pellet forming apparatus comprises:
4. The power transmission device according to claim 3, wherein the power transmitting means has a flywheel (F) fixed to an end portion of the crankshaft (2) at a position opposite to the electric pulley (TF) so as to increase the extrusion efficiency of the extruding means Gt; a < / RTI >
4. The pellet-forming apparatus according to claim 3, wherein the sliding shaft (4) is slidably supported by a support structure (5) selected from a bearing or a bush.
The bush cover (51) according to claim 9, wherein the support structure (5) has a bush cover (51) for receiving the outer circumferential surface of the sliding shaft (4) A water pocket 511 is formed and a helical oil groove 512 is formed on the inner circumferential surface of the bush 50 contacting the sliding shaft 4 so as to lubricate and cool the inner circumferential surface in contact with the sliding shaft 4 Gt; a < / RTI >
2. The apparatus according to claim 1, wherein the extrusion means comprises: an extrusion hole (6) fixed to one end of the sliding shaft (4) and capable of reciprocating in a horizontal direction;
A material supply port (73) having a pressurizing chamber (71) for receiving the end of the extrusion hole (6) and from which material is introduced from the upper portion of the pressurizing chamber (71);
And a press block (7) having an extrusion die unit (8) arranged so that the extrudate can be discharged in a direction in which the extrusion hole (6) is operated.
12. A pellet-forming apparatus according to claim 11, wherein the extrusion holes (6) comprise three concentric circles arranged at the end of the sliding shaft (4).
The sliding member according to claim 11, wherein an extrusion hole (6) fixed to the sliding shaft (4) is slidably supported by a supporting member (72) fixed to the pressing block (7) Wherein an air hole (750) and an air chamber (720) are formed so as to reduce a friction area with the sliding shaft (4).
The press machine according to claim 11, wherein the extrusion die unit (8) comprises an inner case (81) for receiving the extrusion die (80), an outer case (82) for receiving the inner case (81) , And a water pocket (830) is formed on the contact surface between the inner case (81) and the outer case (82).
The press machine according to claim 11, wherein the extrusion die (80) is constituted by a first die (801), a second die (802) and a third die (803) while being separated from the entrance side to the exit side of the extrusion hole And forming a space that gradually becomes narrower.
The pneumatic tire according to claim 11, wherein the material supply port (73) is formed with a taper which is smaller in space of the lower part connected to the pressure chamber (71) than the space in the upper part, Wherein a plurality of counterflow grooves (731) are formed in which the material can flow back so that a part of the pellet forming material can flow back when the pellet forming material is subjected to excessive pressure by the extrusion hole .
2. The apparatus according to claim 1, wherein the guide mechanism (9) comprises: a base (90);
A guide 91 for guiding the pellets fixed and discharged to the base 90;
A rotary member 92 rotatably fixed to the base 90 so that the pellet continuously guided by the guide can maintain the molded shape;
And a pressing means for allowing the rotary member (92) to contact the surface of the pellet guided by the guide (91).
The pivoting device according to claim 17, wherein the pressing means is a weight member (923) fixed to the rotary member (92) at a position away from the center of the pellet from the center where the rotary member (92) Is rotatable toward the pellet about a location fixed to the base (90) to be able to contact the pellet.
18. The method of claim 17, wherein the pressing means is supported by the base (90) at one end thereof at a position where the rotary member (92) is displaced from the center of the pellet fixed to the base (90) Is an elastic member (924) supported on the base (92) so that the rotary member (92) is rotated toward the pellet about a position fixed to the base (90) to contact the pellet.

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