JPH0541729U - Pellet manufacturing equipment - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a pellet manufacturing apparatus 1 capable of manufacturing pellets of a size suitable for molding of a resin molded product. [Structure] After moving a moving carriage forward to fix the heads on the shredder 3 side and the heads 4 and 6 on the extruder 5 side by side, the motor base is moved forward to the rotation shaft of the rotation motor. The fixed cutting blade and the die are brought close to each other. After that, the lock mechanism 25 is pivotally operated to position and fix the cutting blade and the die close to each other, and the adjustment bolt 37 is pivotally operated to finely adjust the interval between the cutting blade and the die. After that, the rotating shaft is rotated by the driving force of the rotation motor, the molten resin extruded from the extruder is molded into a linear body by the die of the shredder 3, and the linear body extruded from the die is also formed. Is cut into a predetermined length with each cutting blade fixed to the rotary shaft of the rotation motor to produce pellets.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to, for example, a pellet manufacturing apparatus used for manufacturing pellets of a size suitable for molding a resin molded product.

[0002]

[Prior Art]

 Conventionally, as the above-described pellet manufacturing apparatus, for example, as shown in FIG. 4, a pellet manufacturing apparatus 40 (Japanese Patent Publication No. 24044)). In this pellet manufacturing apparatus 40, a die 42 fixed to a head 41 of an extruder 39 and respective cutting blades 44 fixed to a tip end portion of a rotary shaft 43 are placed and fixed on the upper portion of the apparatus at a predetermined distance. The rotating shaft 43 is rotated through the sprockets 46, 47 and the chain 48 by the driving force of the rotating motor 45, and the molten resin S extruded from the head 41 of the extruder 39 is formed into the filament Sa by the die 42. There is an apparatus for manufacturing pellets Sb by molding and continuously cutting a plurality of filaments Sa ... Extruded from the die 42 with respective cutting blades 44.

[0003]

[Problems to be solved by the device]

 However, since the pellet manufacturing apparatus 40 described above transmits the driving force of the rotation motor 45 to the rotation shaft 43 via the sprockets 46 and 47 and the chain 48, the filament Sa that is extruded from the die 42 is discharged. Depending on the viscosity or hardness, the chain 48 is momentarily tensioned when the linear body Sa extruded from the die 42 is cut by the respective cutting blades 44, and the linear bodies extruded from the die 42 depending on the tension of the chain 48. There is a problem that the extrusion speed of Sa ... and the rotation speed of each cutting blade 44 fixed to the rotary shaft 43 are apt to change, and the pellets Sb are not uniform in size. Further, when the cutting interval between the die 42 and each cutting blade 44 is variably adjusted, the mounting positions of the rotary shaft 43 and the rotation motor 45 must be changed, and the cutting between the die 42 and each cutting blade 44. There is a problem that it takes time and effort to finely adjust the interval.

In view of the above problems, the present invention has a structure in which a linear motor extruded from a die is moved to a predetermined length by moving a rotary motor relative to an axial direction in which a cutting blade comes in and out of contact with the die to fix the position. An object of the present invention is to provide a pellet manufacturing apparatus capable of easily manufacturing pellets of a size corresponding to the molding of a resin molded product by successively shredding.

[0005]

[Means for Solving the Problems]

 This invention relates to a motor in which a rotating shaft of a rotating motor is directly connected to a center of rotation of a cutting blade close to the die, and the rotating motor is relatively moved in an axial direction in which the cutting blade is brought into contact with and separated from the die. The pellet manufacturing apparatus is characterized by being provided with moving means and motor fixing means for fixing the rotation motor to a position where the cutting blade is close to the die at a predetermined distance.

[0006]

[Action]

 This invention drives a motor moving means to form a die for molding a molten resin extruded from a head of an extruder into a filament and a cutting blade for cutting the filament extruded from the die. The rotation motor is relatively moved in the direction of rotation to drive the motor fixing means, and the cutting blade fixed to the rotation shaft of the rotation motor and the die are fixed at positions close to each other at a predetermined interval. After that, the rotating shaft is rotated by the driving force of the rotation motor, the molten resin extruded from the head of the extruder is molded into a linear body by a die, and the linear body extruded from the die is rotated by the rotating shaft. The pellets are manufactured by successively cutting into a predetermined length with a cutting blade fixed to.

[0007]

[Effect of the device]

 According to this invention, the rotating motor is relatively moved in the axial direction in which the cutting blade is moved toward and away from the die, and the cutting blade fixed to the rotary shaft of the rotating motor and the die are brought close to each other at a predetermined interval. Since the position is fixed to the position, the mutual cutting interval can be easily variably adjusted without displacing the die and the cutting blade when the cutting interval is variably adjusted. Moreover, since the driving force of the rotary motor is directly transmitted to the cutting blade close to the die, the linear body extruded from the die is shredded into a predetermined length without being affected by viscosity or hardness. It is possible to easily manufacture pellets of a size suitable for molding resin molded products, and the device of the present invention is structurally simpler than the conventional device, and the entire device is easy to manufacture. Is.

[0008]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the drawings. The drawings show a pellet manufacturing apparatus for continuously manufacturing the molten resin extruded from an extruder by molding it into a linear body, and in FIG. 1 and FIG. 2, this pellet manufacturing apparatus 1 is The head 4 on the side of the shredder 3 installed on the moving carriage 2 and the head 6 on the side of the extruder 5 installed on the floor are connected and fixed to each other, and the die 7 fixed to the head 4 on the side of the shredder 3 is connected. The molten resin S extruded from the extruder 5 is molded into a filamentous body Sa, and the cutting blade 9 close to the die 7 is rotated by the driving force of the rotation motor 8 provided on the shredder 3 side. An apparatus for manufacturing pellets Sb by continuously cutting the molten resin S extruded from the extruder 5 into a filament Sa while cutting it with a cutting blade 9.

The above-mentioned mobile carriage 2 has guide rails 11 and 11 laid on the upper and left upper surfaces of a traveling guide base 10 installed and fixed on a lower floor surface, and bearings on the lower surface side of the mobile carriage 2 on the guide rails 11 and 11. The wheels 12 are engaged with each other, and the moving carriage 2 is provided so as to be movable in a direction in which the head 4 on the shredder 3 side and the head 6 on the pusher 5 side are aligned with each other. Moreover, the mounting table 14 is horizontally fixed to the upper end portions of the respective support bolts 13 ... Standing at the four corners of the upper surface of the movable carriage 2, and the head 4 is mounted on the fixed table 15 fixed to the front end portion of the lower surface side of the mounting table 14. The guide rails 16a, 16a laid on both ends of the upper surface side of the mounting table 14 are slidably engaged with the running guides 16b, 16b fixed on both end portions of the lower surface side of the motor base 17, respectively. At the same time, the rotation motor 8 mounted and fixed on the motor base 17 is moved back and forth in the direction facing the head 4.

That is, the movable carriage 2 is moved forward so that the extrusion hole 4a formed in the head 4 on the shredder 3 side and the extrusion hole 6a formed in the head 6 on the extruder 5 side are brought into communication with each other. At the same time, the connecting bolts 18a connected to the upper and lower side portions of the head 6 are horizontally rotated, and the connecting bolts 18a are formed in the upper and lower side portions of the heads 4 and 6, respectively. 6b, respectively. After that, the nuts 18b, which are screwed into the connecting bolts 18a, are rotated in the tightening direction with a wrench or the like to tighten and fix the two heads 4, 6 in a matched state. Further, the motor base 17 is moved forward to bring the cutting blades 9 fixed to the rotary shaft 8a of the rotation motor 8 and the die 7 fixed to the head 4 close to each other at a predetermined interval, and to the lock mechanism 25 described later. Therefore, the motor base 17 is locked and fixed at the position where it has been moved forward.

As shown in FIG. 2, the above-mentioned shredder 3 has a die 7 for molding the molten resin S into a filamentous body Sa on the extrusion-side central surface of the head 4 fixed on the mounting table 14 described above. Are fitted and connected and fixed with bolts or the like, and a large number of molding holes 7a for molding the molten resin S into a predetermined wire diameter are formed on the circumference of the center surface of the die 7 at predetermined equal intervals. A fitting hole 19a formed in the central surface on one end side of the casing 19 is fitted to the peripheral portion of the die 7 on the extrusion side, and is fixedly connected by bolts or the like. Moreover, the rotary shaft 8a of the rotary motor 8 fixed on the mounting table 14 is inserted into the shaft center portion of the blade mounting base 20 and is fixed by tightening the rotation fixing bolt 21 to fix the circumference of the tip end surface of the blade mounting base 20. The four cutting blades 9 ... Are fastened and fixed with the blade fixing bolts 22 at regular intervals, and the blade mounting base 20 is formed on the center surface of the casing 19 on the other end side. The die 7 fixed to the head 4 and the cutting blades 9 fixed to the blade mounting base 20 are brought close to each other at a predetermined distance.

The above-mentioned casing 19 has a pellet discharge port 19c for discharging the pellet Sb formed on the lower peripheral surface of the casing 19, and is connected to the pellet discharge port 19c to drop the pellet on the upper surface side of the mounting table 14. It forms the mouth 14a. Further, a drop guide 23 is connected and fixed to the upper surface side peripheral portion of the pellet drop opening 14a, a downflow guide 24 is connected and fixed to the lower surface side peripheral edge of the pellet drop opening 14a, and at the lower position of the same downflow guide 24. The pellet flow path 38 is provided, and the pellet Sb discharged from the pellet discharge port 19c of the casing 19 flows down onto the pellet flow path 38 and is supplied to a pellet separator (not shown).

As shown in FIGS. 1 and 3, the lock mechanism 25 described above connects and locks a lock lever 27 to one end of a support shaft 26 that is erected on the rear end of the lower surface of the mounting table 14. A guide hole 14b having a size that allows the stopper 28 to rotate is formed in the central portion on the upper surface side of the mounting table 14, and the stopper 28 is axially supported at the central portion on the lower surface side of the mounting table 14 so as to face the guide hole 14b. At the same time, the coil spring 31 is stretched between the locking pin 30 fixed to the central portion of the support shaft 26 and the tension adjusting bolt 29 screwed to the lower end portion of the stopper 28 to rotate the lock lever 27. By the dynamic operation, the stopper 28 is pivoted back and forth between a position where it is locked with respect to the locking portion 32 fixed to the central portion on the lower surface side of the motor base 17 and a position where it is released. Front side engagement of the rotary fixing plate 33 fixed to the rear end of the upper surface side The lock lever 27 is engaged with the stop groove 33a and the rear side locking groove 33b to regulate the rotation of the stopper 28 between the locking position and the releasing position.

That is, when the lock lever 27 is rotated forward, the stopper 28 is rotated through the coil spring 31 to a position where it is locked to the locking portion 32 fixed to the lower surface side of the motor base 17. The lock lever 27 is engaged with the locking groove 33a on the front side of the rotation fixing plate 33 fixed on the mounting table 14 to urge the stopper 28 to rotate in the locking direction. On the other hand, when the lock lever 27 is rotated rearward, the stopper 28 is rotated through the coil spring 31 to a position where the locking portion 32 fixed to the lower surface side of the motor base 17 is unlocked. The lock lever 27 is engaged with the rear side locking groove 33b of the rotation fixing plate 33 fixed on the mounting table 14, and the stopper 28 is rotationally biased in the locking releasing direction.

A dial gauge 34 is attached to the above-mentioned motor base 17 with one side of the motor base 17 with the scale side facing sideways, and the dial gauge 34 faces the gauge head 34 a of the dial gauge 34. The reference plate 35 is fixed to the upper surface of one side. In addition, the positioning base 36 is fixed to the front end of the mounting base 14 facing the front end 17a of the motor base 17, and both side ends of the positioning base 36 are opposed to the front end 17a of the motor base 17. The position adjusting bolts 37, 37 are screwed and fixed to.

That is, the position adjusting bolts 37, 37 screwed onto the positioning base 36 are pivotally operated in the retracted direction to bring the front end portion 17 a of the motor base 17 and the positioning base 36 fixed to the mounting base 14 into contact with each other. The die 7 fixed to the head 4 and the cutting blades 9 fixed to the rotary shaft 8a of the rotation motor 8 are brought into contact with each other, and the gauge head 34a of the dial gauge 34 attached to the motor base 17 and the mounting table. The reference plate 35 fixed on 14 is abutted. After that, the adjusting screw 34b of the dial gauge 34 is rotated to set the scale to "0", and the position adjusting bolts 37, 37 screwed into the positioning base 36 are rotated in the projecting direction to move the motor. The position adjustment bolts 37 and 37 are brought into contact with the front end portion 17a of the base 17, respectively, and the rotating motor 8 is moved backward in a direction in which the die 7 and the cutting blades 9 are separated from each other, thereby moving the motor base 17. The scale of the dial gauge 34 changes according to the amount, and the distance between the die 7 and each cutting blade 9 is measured from the change in the scale to finely adjust the shred size of the pellet Sb to be manufactured.

With the illustrated embodiment configured as described above, a method of manufacturing pellets Sb by the pellet manufacturing apparatus 1 will be described below. First, as shown in FIG. 1, the moving carriage 2 is moved forward along the guide rails 11, 11 laid on the traveling guide base 10 to move the head 4 on the shredder 3 side and the head 6 on the extruder 5 side. , The connection bolts 18a connected to the head 6 are horizontally rotated to engage the connection bolts 18a with the bolt engagement grooves 4b and 6b formed on the heads 4 and 6, respectively. At the same time, the nuts 18b ... Screwed into the connection bolts 18a ...

Next, the motor base 17 is moved forward along the guide rails 16 a, 16 a laid on the mounting table 14, and the blade mounting base 20 fixed to the rotary shaft 8 a of the rotation motor 8 is moved to the head 4. The die 7 fixed to the head 4 is inserted into the blade insertion hole 19b of the casing 19 fixed to the head 4, and the front end portion 17a of the motor base 17 and the position adjusting bolts 37 and 37 screwed to the positioning base 36 are brought into contact with each other. And the cutting blades 9 ... Fixed to the rotating shaft 8a of the rotating motor 8 are positionally regulated so as to be close to each other at a predetermined interval.

At the same time, the lock lever 27 is rotated forward to engage and lock the lock lever 27 in the front locking groove 33a of the rotation fixing plate 33 fixed on the mounting table 14, and at the same time, the motor base 17 The stopper 28 is rotated to a position where it is locked with the locking portion 32 fixed to the lower surface side of the motor base 17, and the locking portion 32 of the motor base 17 and the stopper 28 are locked and fixed. By the urging force of the spring 31, the die 7 fixed to the head 4 and the cutting blades 9 ... Fixed to the rotating shaft 8a of the rotation motor 8 are fixed in position in close proximity to each other at a predetermined interval.

After that, as shown in FIG. 2, the head 4 on the shredder 3 side and the head 6 on the extruder 5 side are cooled with cooling water (not shown), and extruded from the head 6 on the extruder 5 side. The molten resin S thus formed is molded into a filament Sa by a die 7 fixed to the head 4 on the shredder 3 side. At the same time, the rotation motor 8 is driven to rotate the cutting blades 9 ... In proximity to the die 7 at a constant speed, and the filaments Sa ... Extruded from the molding holes 7a. While cooling with (not shown), pellets Sb are manufactured by continuously shredding with each cutting blade 9 ..., and the pellets Sb discharged from the pellet discharge port 19c of the casing 19 are flowed down onto the pellet flow path 38. And supply it to a pellet separator (not shown).

After the work is completed, the lock lever 27 is pivoted rearward to engage the lock lever 27 with the rear locking groove 33b of the rotary fixing plate 33 fixed on the mounting table 14, and The stopper 28 is rotated to a position where the locking portion 32 fixed to the lower surface side of the motor base 17 is unlocked, and the locking fixing of the locking portion 32 of the motor base 17 and the stopper 28 is released. . Thereafter, the motor base 17 is moved backward along the guide rails 16a, 16a laid on the mounting table 14, and the blade mounting table 20 fixed to the rotary shaft 8a of the rotation motor 8 is fixed to the head 4. The blade 19 is pulled out from the blade insertion hole 19b, and the inside of the casing 19 is cleaned and inspected or the cutting blade 9 is replaced.

As described above, the rotation motor 8 is moved back and forth in the axial direction in which the respective cutting blades 9 ... Are contacted and separated from the die 7, and is fixed to the rotation shaft 8 a of the rotation motor 8. Since the cutting blades 9 ... And the die 7 are fixedly positioned at positions close to each other at a predetermined interval, when the cutting interval is variably adjusted, the dice 7 and the cutting blades 9 ... Can be easily variably adjusted. Moreover, in order to directly transmit the driving force of the rotation motor 8 to the cutting blades 9 that are close to the die 7, the plurality of filaments Sa that are extruded from the molding holes 7a of the die 7 are removed. The pellets Sb can be shredded into a predetermined length without being affected by viscosity or hardness, and pellets Sb of a size suitable for molding of a resin molded product can be easily manufactured, and the conventional pellet manufacturing apparatus 40 can be used. Compared with the above, the pellet manufacturing apparatus 1 of the present invention is structurally simpler and the whole apparatus is easier to manufacture.

In the correspondence between the configuration of the present invention and the above-mentioned embodiment, the motor moving means of the present invention corresponds to the guide rail 16a, the traveling guide 16b and the motor base 17 of the embodiment, and so on. In addition, the motor fixing means corresponds to the lock lever 27, the stopper 28, the coil spring 31, the locking portion 32, the rotation fixing plate 33, and the position adjusting bolt 37 which constitute the lock mechanism 25. This invention is not limited to the configuration of the above-described embodiment.

In the above-mentioned embodiment, the rotation motor 8 side is moved back and forth in the axial direction to variably adjust the distance between the die 7 and each cutting blade 9. The distance between the die 7 and each cutting blade 9 may be variably adjusted by moving back and forth in the core direction.

[Brief description of drawings]

FIG. 1 is a side view showing a pellet manufacturing apparatus.

FIG. 2 is a vertical sectional side view showing an internal structure of a head portion.

FIG. 3 is a rear view showing a mounting state of the rotation motor.

FIG. 4 is a side view showing a conventional pellet manufacturing apparatus.

[Explanation of symbols]

 S ... Molten resin Sa ... Striatum Sb ... Pellet 1 ... Pellet manufacturing device 3 ... Shredder 5 ... Extruder 4, 6 ... Head 7 ... Die 8 ... Rotating motor 8a ... Rotating shaft 9 ... Cutting blade 16a ... Guide Rail 16b ... Running guide 17 ... Motor base 25 ... Lock mechanism 27 ... Lock lever 28 ... Stopper 31 ... Coil spring 32 ... Locking part 33 ... Rotating fixing plate 33a, 33b ... Locking groove 37 ... Position adjusting bolt

Claims (1)

[Scope of utility model registration request] 1. A molten resin extruded from the head of an extruder is formed into a filament by a die, and a cutting motor adjacent to the die is rotated by a rotation motor to cut the filament extruded from the die. A pellet manufacturing device for manufacturing pellets by shredding with a blade, wherein the rotation shaft of a rotation motor is directly connected to the center of rotation of the cutting blade close to the die, and the cutting blade is brought into contact with or separated from the die. A pellet manufacturing apparatus comprising motor moving means for relatively moving a rotation motor in the axial direction, and motor fixing means for fixing the rotation motor at a position where a cutting blade is close to the die at a predetermined interval.