JP2013095012A - Strand delivery apparatus, and pellet manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a strand delivery apparatus capable of preventing the occurrence of failure in delivery of a strand caused by the strand not being sandwiched between a violent movement preventing member and a strand conveying surface when cutting the strand at high speed.SOLUTION: The strand is delivered by an upper delivery roller 21 and a lower delivery roller 22. The upper delivery roller 21 is supported by a roller supporting part 30 so that a clearance between the upper delivery roller 21 and the lower delivery roller 22 can be changed. The violent movement preventing member 40 for suppressing vertical movement of the strand is turnably pivoted at a lower part which is below the roller supporting part 30 in a clearance adjusting member 50 mounted vertically displaceably on the roller supporting part 30. An upper movement limiting part for limiting the upper movement and a lower movement limiting part for limiting the lower movement of the violent movement preventing member 40 are provided so that the violent movement preventing member 40 does not come in contact with the upper delivery roller 21.

Description

  The present invention relates to a strand feeding device that feeds a strand from a fixed blade side toward a rotary blade to a strand cutting device that cuts the strand into a pellet form by a fixed blade and a rotatable rotary blade that faces the fixed blade, and The present invention relates to a pellet manufacturing machine provided with the strand feeding device.

  Conventionally, in a pellet manufacturing machine that cuts strands to produce pellets, the strands vigorously move up and down when the rotary blade of the strand cutting device hits the strands to cut the strands.

  At this time, the strand tends to escape not only in the vertical movement but also in the lateral direction. For this reason, there exists a thing as described in patent document 1 as a means for suppressing the jumping of a strand above the vicinity where a strand is cut | disconnected.

  That is, it has a jumping prevention member that is rotatably supported above the fixed blade that cuts the strand, and the jumping prevention surface of the jumping prevention member faces the strand conveyance surface to which the strand is sent. It is arranged to do.

JP 2007-152865 A

  However, when the pellet manufacturing machine is operated at a high speed, the strands move more and more vertically and the number of times of vertical movement per unit time increases. If the jump prevention member cannot follow the movement, the jump prevention member jumps. There may be a problem that the strand is sandwiched between the ascending deterrent surface and the strand transport surface, thereby preventing the strand from proceeding. This problem is more likely to occur as the pellet production machine is operated at higher speed.

  When such a strand clogging occurs, the operation of the pellet manufacturing machine must be stopped to correct the strand clogging state, which greatly affects the production of pellets.

Therefore, in order to stably continue the high-speed operation of the pellet manufacturing machine, it is required that the ramp-up preventing member can instantaneously respond to the vertical movement of the strand during cutting.
In order to speed up the operation, it is preferable to increase the strength of the rampage prevention member.

  The present invention has been made paying attention to such problems of the prior art, and even when the pellet manufacturing machine is operated at high speed, the ramp-up preventing member immediately follows the up-and-down movement of the strand and the ramp-up occurs. To provide a strand feeding device and a pellet manufacturing machine equipped with the strand feeding device, in which a strand is not sandwiched between a preventing member and a strand conveying surface, and troubles in strand conveyance can be prevented. It is an object.

The gist of the present invention for achieving the object described above resides in the inventions of the following items.
[1] To the strand cutting device (3) that cuts the strand (S) into pellets by the rotatable rotary blade (320) and the fixed blade (310) facing the rotary blade (320), the fixed blade ( 310) In the strand delivery device (2) that sends out the strand (S) from the side toward the rotary blade (320),
The upper feed roller (21) and the lower feed roller (22) disposed below the upper feed roller (21) and the lower feed roller (22) can be changed in distance so that the upper feed roller can be changed. A roller support portion (30) for supporting the roller (21), a runaway prevention member (40) for suppressing the vertical movement of the strand (S) when being cut, and a vertical displacement in the roller support portion (30). Gap adjustment that can be attached and pivotally supports the rampage prevention member (40) so as to be pivotable up and down, and the gap between the rampage prevention member (40) and the upper feed roller (21) is adjustable. A member (50);
The gap adjusting member (50) pivotally supports the rampage prevention member (40) below the roller support portion (30), and the rampage prevention member (40) is an upper feed roller (21). A strand sending device comprising an upper movement restricting portion (54a) for restricting the upward movement of the rampage prevention member (40) so as not to hit and a lower movement restricting portion (54b) for restricting the downward movement. (2).

[2] The gap adjusting member (50) has a lower end portion formed thinly with a step at a lower portion, and the rampage prevention member (40) is pivotally supported at the lower end portion, and the step portion The strand feeding device (2) according to [1], wherein the strand feeding device (2) has an upward movement restricting portion (54a) and a downward movement restricting portion (54b).

[3] The strand feeding device (2) according to [1] or [2], wherein the rampage prevention member (40) has an R attached to at least a part of the entire bent portion.

[4] The rampage prevention member (40) extends from both ends of the restraining portion (41) that hits the strand (S) that moves up and down and is pivotally supported by the gap adjusting member (50). Arm (42)
The restraining portion (41) has a cut portion (44) that is cut to adjust the weight in the extending direction, and R is attached to the corner portion of the cutting portion (44). Strand delivery apparatus (2) according to [1], [2] or [3].

[5] In the normal state where the strand (S) is not hit, the runaway prevention member (40) has a strand receiving surface (45) facing the incoming strand (S) to which the strand (S) is sent. [1], [2], characterized in that it is set to have an upward inclination from the leading edge in the strand traveling direction to the trailing edge in the direction in which the strand (S) is sent. The strand delivery device (2) according to [3] or [4].

[6] A strand cutting device (3) that cuts the strand (S) into a pellet shape by a rotatable rotary blade (320) and a fixed blade (310) facing the rotary blade (320), and [1] A pellet manufacturing machine (1) comprising the strand feeding device (2) according to any one of [5].

The present invention operates as follows.
The strand (S) to be cut into pellets is sandwiched between the upper feeding roller (21) and the lower feeding roller (22) of the strand feeding device (2), and the fixed blade of the strand cutting device (3). It is sent out from the (310) side toward the rotary blade (320) facing this fixed blade (310).

  The distance between the upper feed roller (21) and the lower feed roller (22) depends on the thickness of the strand (S) or the upper feed roller (21) or the lower feed roller (22) is worn. It is necessary to adjust when the interval changes. This adjustment can be performed by changing the upper feed roller (21) in the vertical direction by the roller support portion (30) that supports the upper feed roller (21).

  In this way, the strand (S) fed by the upper feed roller (21) and the lower feed roller (22) maintained at appropriate intervals has a cutting edge of the rotating rotary blade (320) fixed blade. It is cut at a place that passes the cutting edge (312) of (310). The rotary blade (320) rotates in a direction from the upper side of the strand (S) toward the strand (S). For this reason, to the strand (S) at the time of cutting | disconnection, the force which goes to the downward direction from upper direction is added by the rotary blade (320). On the other hand, the fixed blade (310) supports the strand (S) from below. As a result, the strand (S) falls with its tip side cut into a pellet.

  The remaining strand (S) whose tip side is cut is pushed downward by the force received from the rotary blade (320) during cutting, but when the rotary blade (320) is separated, the reaction force from the fixed blade (310) side. To jump up. At this time, if there is no rampage prevention member (40), the strand (S) bent by the upward movement moves downward to release the energy accumulated by the bending. Since this downward movement is received by the fixed blade (310) side, the strand (S) is moved upward again by the reaction force from the fixed blade (310) side. In this way, the up and down movement is repeated.

  The rampage prevention member (40) for suppressing the vertical movement of the strand (S) is pivotally supported by the gap adjustment member (50), and thus can be turned up and down. The gap adjustment member (50) Since the upper and lower displacements are attached to the roller support portion (30), the clearance between the rampage prevention member (40) and the upper feed roller (21) can be adjusted appropriately. When the strand (S) bounced up by the cutting hits the rampage prevention member (40), the rampage prevention member (40) rotates upward. At this time, since the rampage prevention member (40) has a weight, the energy accumulated in the strand (S) is consumed every time the rampage prevention member (40) is moved up.

  When the rampage prevention member (40) hits the upward movement restricting portion (54a) during the upward movement, it cannot be further moved upward. Thereby, while the height of the strand (S) jumping up is restricted, it is possible to prevent the occurrence of a situation in which the rampage prevention member (40) contacts the upper feed roller (21). The downward movement restricting portion (54b) can prevent the occurrence of a situation in which the rampage prevention member (40) is lowered more than necessary and obstructs the feeding of the strand (S). In this way, the vertical movement of the strand (S) is suppressed.

  When the strand (S) is cut at a high speed, the strand (S) moves up and down frequently. Therefore, in order to suppress the up-and-down motion, the anti-rambling member (40) moves up and down the strand (S). It is necessary to follow the movement promptly. Since the rampage prevention member (40) in the present invention is provided below the gap adjustment member (50) below the roller support portion (30), the turning radius can be reduced. Thereby, when the strand (S) is cut at a high speed, the vertical movement of the strand (S) can be well suppressed.

  Moreover, since the rampage prevention member (40) improves the strength of the bent portion by attaching R to at least a portion of the bent portion of the entire shape, the bent portion is cracked even when high-speed cutting is performed. The occurrence of the situation can be prevented. Further, the restraining portion (41) between the arms (42) of the rampage prevention member (40) has a cutting portion (44) cut to adjust the weight along the extending direction of the restraining portion (41). Since the strength of the corners is improved by attaching R to the corners of the cutting part (44), it is possible to prevent the occurrence of cracks at the corners even if high-speed cutting is performed.

  In a normal state where the strand (S) is not hit, the rampage prevention member (40) has the strand receiving surface (45) facing the strand (S) and the strand (S) being fed to the strand receiving surface (45). Since the upward slope is formed from the leading edge in the direction to the trailing edge in the direction in which the strand (S) is sent, the strand (S) is instantly moved when the strand (S) moves up. It is possible to respond by hitting the receiving surface (45).

  The pellet manufacturing machine (1) configured to send the strand (S) to the strand cutting device (3) by such a strand sending device (2) cuts the strand (S) at a high speed and mass-produces pellets. And high-speed operation can be continued stably.

  According to the strand delivery device of the present invention, the rampage prevention member can have a small turning radius, so that even when the strand is cut at a high speed, the rampage prevention member responds instantaneously to the vertical movement of the strand. The vertical movement can be suppressed, and a situation can be prevented in which the strands are sandwiched between the rampage prevention member and the strand conveyance surface and a failure occurs in the strand conveyance.

  In addition, since the overall strength is improved by attaching R to the bent portion and the corner portion of the rampage prevention member, it is possible to cope with higher speed cutting.

It is a side view which shows the strand delivery apparatus which concerns on one embodiment of this invention. It is a front view which shows the strand delivery apparatus of FIG. It is a top view which shows the upper delivery roller and its peripheral part in the strand delivery apparatus which concerns on one embodiment of this invention. It is a front view which shows the upper delivery roller of FIG. 3, and its peripheral part. It is a disassembled perspective view which shows the peripheral part of an upper sending roller except an upper sending roller. It is the disassembled perspective view which looked at the peripheral part of the upper sending roller from the upper part of the front side except for the upper sending roller. It is the disassembled perspective view which looked at the peripheral part of the upper sending roller from the front side except for the upper sending roller. It is the disassembled perspective view which looked at the peripheral part of the upper delivery roller from the side surface except for the upper delivery roller. It is the exploded view which looked at the roller support part and clearance gap adjustment member in FIG. 8 from the back surface side. It is a perspective view which shows a rampage prevention member. It is a front view which shows a rampage prevention member. It is a bottom view which shows a rampage prevention member. It is a side view which shows a rampage prevention member. It is a top view which shows the fixed blade in a strand cutting device. It is a front view which shows the fixed blade in a strand cutting device. It is a side view which shows the peripheral part of the rampage prevention member in FIG. It is the side view which looked at the peripheral part of the rampage prevention member of FIG. 16 from the back surface. It is an enlarged view which shows a part in the circle | round | yen shown with the broken line 18 in FIG. It is a side view which shows a state when the strand has not hit | abutted the rampage prevention member in the strand sending apparatus which concerns on one embodiment of this invention. FIG. 20 is a side view showing the periphery of the rampage prevention member in FIG. 19. It is an enlarged view which shows a part in the circle | round | yen shown with the broken line 19 in FIG. It is a front view which shows the pellet manufacturing machine provided with the strand sending apparatus which concerns on one embodiment of this invention. It is a side view which shows simply arrangement of a strand sending device and a strand cutting device concerning one embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
Each figure shows an embodiment of the present invention.
FIG. 1 is a side view showing a strand feeding device 2 according to an embodiment of the present invention. In FIG. 1, a case where a later-described rampage prevention member 40 is in the most swelled state is shown. FIG. 2 is a front view of the strand delivery device 2. The strand feeding device 2 shown in FIGS. 1 and 2 is provided in the pellet manufacturing machine 1 shown in FIG. FIG. 23 is a side view showing the arrangement of the strand feeding device 2 and the strand cutting device 3 in a simplified manner.

  As shown in FIG. 22, the pellet manufacturing machine 1 is a device that sends a strand S made of synthetic resin to a strand cutting device 3 by a strand sending device 2 and cuts the strand S into a pellet by the strand cutting device 3. is there. The strand sending device 2 is a device for sending the strand S to be cut in the strand sending direction A toward the strand cutting device 3 and causing the strand cutting device 3 to cut it.

  As shown in FIG. 22, the pellet manufacturing machine 1 including the strand feeding device 2 and the strand cutting device 3 is provided with the pellet dropping path 11 below the rotating body 300, and the pellet dropping path 11 A sieve device 12 or the like is provided below the sieving device for sieving the pellets to remove debris generated during cutting from the pellets.

  As shown in FIG. 23, the strand cutting device 3 includes a fixed blade 310 fixed to the strand feeding device 2 and a rotary blade mounted on a cylindrical rotary body 300 so as to face the fixed blade 310. 320 is an apparatus for cutting the strand S into pellets. The strand S is delivered by the strand delivery device 2 in the direction of arrow A from the fixed blade 310 side toward the rotary blade 320.

  The rotating body 300 has a rotating shaft 300a attached at a right angle to the end surface opposite to the end surface facing the fixed blade 310. The rotating shaft 300a is disposed so as to be parallel to the strand feeding direction A. The rotating shaft 300a is supported by a support member 331 at an intermediate portion, and a pulley 332 is attached to a shaft end opposite to the shaft end attached to the rotating body 300. The pulley 332 is connected to the motor M by a pulley cable 333. Thereby, the rotating body 300 can be rotated by the driving force of the motor M transmitted via the pulley cable 333.

  A plurality of mounting bases 340 (fixed portions) are fixed to the rotating body 300 at equal intervals along the periphery of the end surface facing the fixed blade 310. One rotating blade 320 is fixed to each of the mounting bases 340 by bolts 60.

  A fixed blade 310 is shown in FIGS. 14 and 15. FIG. 14 is a plan view showing the fixed blade 310 and its peripheral portion, and FIG. 15 is a front view showing the fixed blade 310 and its peripheral portion.

  The fixed blade 310 is fixed to the upper surface of the base B. In the base B, a guide portion G that guides the strand S from the strand feeding device 2 is disposed continuously to the peak 311 of the fixed blade 310. In the fixed blade 310, the length of the blade edge 312 is shorter than the length of the peak 311, and the fixed blade surface 313 from the blade edge 312 to the peak 311 is formed in a trapezoidal shape.

  The base B has side walls b <b> 1 rising on both sides of the fixed blade 310. The opposing surfaces of the side walls b1 have an inclined surface b2 having the same inclination as the inclined side of the fixed blade 310. The fixed blade 310 is accommodated between the both side walls b1. As a result, the strands S sent from the strand feeding device 2 are gathered together with the lateral movement restricted by the inclined surface b2. Moreover, the screw holes b3 for screwing the height adjusting bolts 220 for adjusting the height position in the normal state of the ramp-up preventing member 40 described later are provided in the both side walls b1 in the vertical direction.

  The strand sending device 2 for sending the strand S to such a strand cutting device 3 has an upper sending roller 21 and a lower sending roller 22 for sending the strand S sandwiched from above and below in the strand sending direction A. Prepared in front of 3. The upper feed roller 21 is a rubber winding roller whose outer peripheral surface is covered with rubber, and the lower feed roller 22 is a metal roller.

  As shown in FIGS. 1 and 3 and the like, the upper feed roller 21 is supported so that the rotation shaft 21a can be freely rotated by the roller support portion 30 and the interval with the lower feed roller 22 can be changed. Yes. The roller support portion 30 is connected to the air cylinder 100, and the distance between the upper feed roller 21 and the lower feed roller 22 can be changed by driving the air cylinder 100.

  On the other hand, the lower feed roller 22 is disposed at a predetermined position in the pellet manufacturing machine 1. The lower feed roller 22 is connected to a motor (not shown) in the pellet manufacturing machine 1 and can be rotated by power from the motor. As shown in FIG. 1, the axis of the upper feed roller 21 is disposed slightly forward of the axis of the lower feed roller 22 in the feed direction A of the strand S. This is because the strand S that is sandwiched between the upper feed roller 21 and the lower feed roller 22 is sent out slightly downward.

  It should be noted that the upper feed roller 21 and the lower feed roller 22 are normally the upper feed roller 21 is a rubber-rolled roller and the lower feed roller 22 is a metal roller, but both are rubber-rolled rollers. May be. The strand S of synthetic resin delivered by the strand delivery device 2 may be a soft resin such as an elastomer or another hard resin.

Next, the upper feed roller 21 and its peripheral part will be described. FIG. 3 is a perspective view showing the upper feed roller 21 and its peripheral portion, and FIG. 4 is a front view.
On the delivery A direction side of the strand S, a rampage prevention member 40 for suppressing the vertical movement of the strand S when being cut by the strand cutting device 3 is disposed. This rampage prevention member 40 is pivotally supported by the gap adjustment member 50. Therefore, the rampage prevention member 40 can swing in the vertical direction. The gap adjustment member 50 that pivotally supports the rampage prevention member 40 is attached to the roller support portion 30 so that the position in the vertical direction can be changed. Thereby, the gap between the rampage prevention member 40 and the upper feed roller 21 can be appropriately adjusted in accordance with the thickness of the strand S and the like.

  The upper feed roller 21 and its peripheral portion will be described in more detail with reference to FIGS. 5 to 8 in addition to FIGS. 3 and 4. FIG. 5 is an exploded perspective view showing a peripheral portion of the upper feed roller 21, FIG. 6 is an exploded perspective view of the peripheral portion of the upper feed roller 21 as viewed from the front, and FIG. FIG. 8 is an exploded perspective view of the periphery of the feed roller 21 as viewed from the front side, and FIG. 8 is an exploded view of the periphery of the upper feed roller 21 as viewed from the side. FIG. 9 is an exploded view of the roller support portion 30 and the gap adjusting member 50 in FIG. 8 as viewed from the back side.

  The roller support part 30 has a connecting hole 31 for connecting the cylinder shaft 101 of the air cylinder 100 to the head part 34 facing downward. In addition, two elongated holes 32 penetrating the side surface are formed in the roller support portion 30 in parallel. The elongated hole 32 extends in the direction in which the coupling hole 31 extends, that is, in the up-down direction of the roller support portion 30. Further, a support hole 33 for supporting the rotating shaft 21 a of the upper feed roller 21 is formed in the lower portion of the roller support portion 30.

  A gap adjusting member 50 is attached to the lower portion of the roller support portion 30. Two screw holes 51 into which bolts 210 for fixing the gap adjusting member 50 to the roller support portion 30 are screwed are formed in the upper part of the gap adjusting member 50. When attaching the gap adjusting member 50 to the roller support 30, the two bolts 210 may be passed through the pulleys 332 of the roller support 30 and then screwed into the screw holes 51 of the gap adjusting member 50.

  Since the head portion 211 of the bolt 210 is larger than the width of the long hole 32, the gap adjusting member 50 can be fixed to the roller support portion 30 by screwing the head portion 211 into the screw hole 51 and tightening. The clearance adjustment member 50 can change its fixing position along the screw hole 51 of the clearance adjustment member 50.

  The gap adjusting member 50 has a long hole 52 extending in the vertical direction at the center thereof. The elongated hole 52 is for the rotation shaft 21a of the upper feed roller 21 supported by the support hole 33 of the roller support portion 30 to pass through in a state where the gap adjusting member 50 is attached to the roller support portion 30. . In addition, the clearance adjustment member 50 is provided with a support hole 53 for pivotally supporting the rampage prevention member 40 at a lower portion below the roller support portion 30 when attached to the roller support portion 30.

  As shown in FIGS. 8 and 9, the gap adjusting member 50 has a thin lower end portion 55 with a step 54 at the lower portion on the back side. The support hole 53 is formed so as to penetrate the lower end portion 55.

  As shown in FIG. 17, since the ramp preventing member 40 is pivotally supported by inserting a shaft portion 43 described later into the support hole 53 from the side where the step 54 is provided, the bump 54 is prevented from being disturbed. The movable range C is limited. That is, the end near the cutting edge 312 of the fixed blade 310 among the both ends of the step 54 is the upward movement restricting portion 54a in which the upwardly moving irregularity preventing member 40 hits and the upward movement restricting member 40 is restricted. One end is a downward movement restricting portion 54b where the downward movement preventing member 40 hits and the downward movement restricting member 40 is restricted.

  Even if the ramp-up preventing member 40 jumps to the maximum extent, the upper movement restricting portion 54a does not hit the upper feed roller 21. Thereby, when the upper feed roller 21 is a rubber roller, it is possible to prevent the rampage prevention member 40 from jumping up and hitting the upper feed roller 21.

  When the air cylinder 100 is driven and the upper feed roller 21 is raised and lowered, the arm 42 of the ramp preventing member 40 may hit the head 221 of the height adjusting bolt 220 and be damaged if the ramp preventing member 40 is lowered too much. Therefore, the downward movement restricting portion 54b prevents the rampage prevention member 40 from being lowered too much.

  In order to prevent the strand S from crossing the side walls b1 on both sides of the fixed blade 310 when the rampage prevention member 40 jumps up, the side wall b1 has a height from the fixed blade surface 313 of 4 to 12 mm to prevent the rampage. Even when the member 40 is maximally bounced, the lowest point of the rampage prevention member 40 is prevented from becoming higher than the side wall b1 of the fixed blade 310. This prevents the strand S from being caught, the strand S being fed out, and the strand S from being side-run.

10 to FIG. 13, the rampage prevention member 40 is shown. 10 is a perspective view of the ramp preventing member 40, FIG. 11 is a front view of the ramp preventing member 40, FIG. 12 is a bottom view of the ramp preventing member 40, and FIG. 13 is a side view of the ramp preventing member 40. is there.
The rampage prevention member 40 faces the strand S above the strand S sent out by the strand feed device 2 and hits the strand S that moves up when the strand S is cut, and a deterring part 41 that suppresses the ramping of the strand S; It comprises an arm 42 that bends and extends at substantially right angles at both ends of the restraining portion 41, and a shaft portion 43 that extends outward from the end portion of the arm 42 at substantially right angles. The arm 42 is located immediately above the screw hole b3 of the base B.

  The shaft portion 43 is inserted into and supported by the support hole 53 formed in the lower end portion 55 as described above. Since the position of the support hole 53 is provided at a position where the arm 42 of the ramp preventing member 40 is substantially shortest, the rotation radius of the ramp preventing member 40 is minimized. Therefore, even when the strand S is cut at a high speed, the rampage prevention member 40 can follow and follow up and down movement of the strand S frequently.

  The upper part of the suppression part 41 has the cutting part 44 cut in order to adjust the weight of the rampage prevention member 40 in the extending direction. The cutting portion 44 is configured so that, even when the strand S is cut at a high speed, the rampage prevention member 40 can follow the up-and-down movement of the strand S at the time of cutting instantaneously in response to the weight of the rampage prevention member 40. It was formed for optimization.

  As shown in FIG. 12, the lower surface of the restraining portion 41 is a strand receiving surface 45 facing the incoming strand S in a normal state where the strand S is not hit, and the surface where the vertically moving strand S directly hits. It is. The strand receiving surface 45 is formed in a trapezoidal shape as a whole, with the length of the rear end edge on the upstream side in the traveling direction of the strand S being sent being longer than the length of the front end edge on the downstream side in the traveling direction.

  As shown in FIGS. 20 and 21, in the normal state where the strand S does not hit the strand receiving surface 45, the rampage prevention member 40 sends the strand S from the leading edge in the strand traveling direction in which the strand S is sent. The strand receiving surface 45 is set to have an upward inclination toward the rear end edge in the direction in which it is formed. Such setting can be performed by adjusting the height of the arm 42 of the rampage prevention member 40 placed on the head 221 by adjusting the height of the head 221 of the height adjusting bolt 220.

  As for the cutting part 44, R is attached to the corner | angular part 44r of both ends. As a result, the corner portion 44r is improved in strength as compared with the angular portion, so that the corner portion 44r is difficult to break. In addition, the restraining portion 41 has an upper portion extending thinly, and the bent corner portion 41r and the bent portion 42r in which the arms 42 are bent at substantially right angles at both ends of the restraining portion 41 are also provided with R. Thereby, the strength of the corner portion 41r and the bent portion 42r is also improved.

Next, the operation of the strand delivery device 2 according to this embodiment will be described.
The strand S to be cut into pellets is sandwiched between the upper feeding roller 21 and the lower feeding roller 22 of the strand feeding device 2 and faces the fixed blade 310 from the fixed blade 310 side of the strand cutting device 3. It is sent out in the sending direction A toward the rotating blade 320 side.

  The distance between the upper feed roller 21 and the lower feed roller 22 is the height of the upper feed roller 21 supported by the roller support 30 by driving the air cylinder 100 and changing the height of the roller support 30. Can be adjusted. By this adjustment, the distance between the upper feed roller 21 and the lower feed roller 22 can be set to an optimum distance according to the thickness of the strand S. Further, even when the upper feed roller 21 or the lower feed roller 22 is worn and the interval between them is changed, the optimum interval can be maintained by adjusting.

  Regardless of the position of the upper delivery roller 21, the axis of the upper delivery roller 21 is arranged slightly forward of the axis of the lower delivery roller 22 in the delivery direction A of the strand S. The strand S sandwiched between the upper delivery roller 21 and the lower delivery roller 22 is sent out slightly downward by the upper delivery roller 21 after leaving the lower delivery roller 22. Thereby, the strand S is prevented from being lifted by the conveyance itself before reaching the fixed blade 310.

  The strand S sent out by the upper feed roller 21 and the lower feed roller 22 maintained at an appropriate interval in this way is where the cutting edge of the rotating rotary blade 320 passes the cutting edge 312 of the fixed blade 310. Disconnected. The distance between the cutting edge of the rotary blade 320 and the cutting edge 312 of the fixed blade 310 at the time of cutting can be adjusted in advance.

  The rotary blade 320 rotates in the direction from the upper side of the strand S toward the strand S. For this reason, a force from the upper side to the lower side is applied to the strand S when being cut by the rotary blade 320. On the other hand, the fixed blade 310 supports the strand S from below. As a result, the strands S fall off with the tip side cut into pellets. The cut strands S are passed through the pellet dropping path 11 disposed below the rotating body 300 and sieved by the sieve device 12 before being accommodated.

  The strand S remaining on the strand cutting device 3 side may bend downward due to the force received from the rotary blade 320 and the reaction force from the fixed blade 310 side at the time of cutting. As soon as it leaves S, the strand S jumps upward.

  The rampage prevention member 40 for suppressing the vertical movement of the strand S is in the state shown in FIGS. 19 to 21 in a normal state where the strand S does not contact the strand receiving surface 45. FIG. 19 is a side view showing the strand delivery device 2, showing a state when the strand S does not hit the rampage prevention member 40, and FIG. 20 is a side view showing the peripheral portion of the rampage prevention member 40 in FIG. 19. FIG. 21 is an enlarged view showing a part in a circle indicated by a broken line 19 in FIG.

  As shown in FIG. 21, in a normal state where the strand S does not hit the rampage prevention member 40, the arm 42 of the rampage prevention member 40 is placed on the head 221 of the height adjustment bolt 220 of the base B. In this normal state, the ramp preventing member 40 has the strand receiving surface 45 inclined upward from the leading edge in the direction A in which the strand S is sent to the rear edge in the direction in which the strand S is sent. . Accordingly, when the strand S starts to move up and down, the strand S instantaneously hits a lower portion of the strand receiving surface 45, and the rampage prevention member 40 jumps up.

  At this time, since the violating prevention member 40 is provided so that the arm 42 is shortest, the swaying of the violating prevention member 40 follows the strand S with very high responsiveness and moves the strand S up and down. It can be quickly converged. Thereby, it is possible to prevent the strand S from being clogged between the rampage prevention member 40 and the fixed blade surface 313 of the fixed blade 310, and to prevent the strand S from being prevented from being sent out.

  The distance from the strand receiving surface 45 of the rampage prevention member 40 to the fixed blade surface 313 of the fixed blade 310 is desirably the thickness of the strand S plus 0.5 to 1 mm. Therefore, it is preferable to set 3 mm as a guideline, and for the thin strand S, the lowest point of the rampage prevention member 40 is set to an interval close to approximately 0 mm.

  The adjustment of the distance from the strand receiving surface 45 to the fixed blade surface 313 corresponding to the thickness of the strand S can be performed by displacing the gap adjusting member 50 up and down. That is, the adjustment can be performed by loosening the bolt 210 and displacing the gap adjusting member 50 up and down along the elongated hole 32 of the roller support portion 30. By this adjustment, the gap between the rampage prevention member 40 and the upper feed roller 21 can be appropriately adjusted and maintained.

  When the strand S bounced up by the cutting strikes the rampage prevention member 40, the rampage prevention member 40 rotates upward. At this time, since the rampage prevention member 40 has a weight, the energy accumulated in the bent strand S is consumed every time the rampage prevention member 40 is moved up.

  When the rampage prevention member 40 is bounced up and hits the upper movement restricting portion 54a, it cannot move further. Accordingly, the position of the strand receiving surface 45 of the rampage prevention member 40 at this time becomes the maximum limit of the jumping position of the strand S. Even if the rampage prevention member 40 reaches this position, it does not contact the upper feed roller 21.

  The downward movement restricting portion 54b can prevent the occurrence of a situation where the rampage prevention member 40 is lowered more than necessary and obstructs the feeding of the strand S. When the air cylinder 100 is driven and the upper feed roller 21 is raised and lowered, the arm 42 of the rampage prevention member 40 that is lowered along with the raising and lowering hits the head 221 of the height adjusting bolt 220 and the rampage prevention member 40 is moved. It is possible to prevent the occurrence of a situation of being damaged.

  The higher the speed of cutting of the strand S, the more frequently the strand S moves up and down. Since the rampage prevention member 40 is pivotally supported by the lower end portion 55 of the gap adjustment member 50 located below the roller support portion 30 in order to reduce the turning radius and improve the followability, the strand S can be cut by high-speed cutting. The up and down movement of the can respond quickly even if it becomes frequent.

  Furthermore, in the normal state where the strand S does not move up and down, the strand receiving surface 45 is lowered in the direction A in which the strand S is sent, so the distance between the strand S and the strand receiving surface 45 is reduced. Yes. Therefore, when the strand S moves up, it strikes the strand receiving surface 45 instantly. Thereby, even when the strand S is cut at a high speed, the vertical movement of the strand S can be effectively suppressed.

  Further, the rampage prevention member 40 is provided with an R so that at least a part of the bent portion 42r of the entire shape and the corner portion of the cutting portion 44 are not angular, so that the bent portion is easily bent when force is applied. The strength of the portion 42r can be increased. For this reason, even if the strand S is cut at a high speed, the bent portion 42r prevents damage and increases the service life of the rampage prevention member 40.

  As described above, according to the strand feeding device 2, the ramp preventing member 40 can have a small turning radius, and therefore, when the strand S is cut at a high speed, the ramp preventing member 40 instantaneously moves up and down. Accordingly, the strand S can be prevented from moving up and down in the vertical direction, and the strand S can be prevented from escaping in the horizontal direction due to the vertical movement. It is possible to prevent the occurrence of an obstacle in the transport of the strand S due to the S being sandwiched.

  Therefore, the pellet manufacturing machine 1 in which the strand S is sent to the strand cutting device 3 by the strand sending device 2 can stably continue the cutting of the strand S at a high speed. can do.

  The embodiments of the present invention have been described above with reference to the drawings. However, the specific configuration is not limited to the above-described embodiments, and the present invention can be changed or added without departing from the scope of the present invention. Included in the invention.

  For example, in the above-described embodiment, the bent portion of the arm 42 that is bent from the restraining portion 41 of the rampage prevention member 40 is shown as having an angular shape, but is curved from the arm 42 to the restraining portion 41. There may be.

  The idea of the strand feeding device according to the present invention is not limited to strands to be sent out. For example, as long as it is within the cutting width that is the width of the cutting edge of the fixed blade of the strand cutting device, a sheet-like material, for example, thickness 0 Widely used for most of materials that require sizing cutting, such as hard materials with a width of 0.2 to 1 mm at 2 to 1 mm, soft materials with a thickness of 0.2 to 5 mm and a width of about 50 mm, and seaweed etc. Can be used.

A ... Strand feeding direction B ... Base b1 ... Side wall b2 ... Slope b3 ... Screw hole C ... Movable range G ... Guide part M ... Motor S ... Strand 1 ... Pellet making machine 2 ... Strand feeding device 3 ... Strand cutting device 11 ... Pellet falling path 12 ... Sieving device 21 ... Upper feed roller 21a ... Rotary shaft 22 ... Lower feed roller 30 ... Roller support part 31 ... Connecting hole 32 ... Elongated hole 33 ... Support hole 34 ... Head 40 ... Ramp prevention member DESCRIPTION OF SYMBOLS 41 ... Suppression part 41r ... Corner | angular part 42 ... Arm 42r ... Bending part 43 ... Shaft part 44 ... Cutting part 44r ... Corner | angular part 45 ... Strand receiving surface 50 ... Gap adjustment member 51 ... Screw hole 52 ... Elongated hole 53 ... Support hole 54 ... Step 54a ... Upper limit 54b ... Down limit 55 ... Lower end 60 ... Bolt 100 ... Air cylinder 210 ... Bolt 211 ... Head 220 ... Height adjustment bolt G 221 ... Head 300 ... Rotating body 300a ... Rotating shaft 310 ... Fixed blade 311 ... Peak 312 ... Blade tip 313 ... Fixed blade surface 320 ... Rotating blade 331 ... Support member 332 ... Pulley 333 ... Pulley cable 340 ... Mounting base

Claims (6)

In a strand feeding device for sending a strand from the fixed blade side toward the rotary blade, to a strand cutting device that cuts the strand into a pellet shape by a rotatable rotary blade and a fixed blade facing the rotary blade,
An upper delivery roller, a lower delivery roller disposed below the upper delivery roller, and a roller support that supports the upper delivery roller so that a distance between the lower delivery roller and the lower delivery roller can be changed. An anti-rambling member that suppresses vertical movement of the strands during movement, and is attached to the roller support portion so as to be vertically displaceable, and pivotally supports the anti-rambling member so as to be vertically rotatable, and the anti-rambling member and the A gap adjusting member that can adjust the gap with the upper feed roller;
The clearance adjusting member pivotally supports the ramp preventing member below the roller support portion, and restricts the upward movement of the ramp preventing member so that the ramp preventing member does not hit the upper feed roller. A strand feeding device comprising: a motion restricting portion; and a downward motion restricting portion for restricting downward motion.   The gap adjusting member has a lower end formed thinly with a step at a lower portion, and the ramp-up preventing member is pivotally supported at the lower end, and the upper movement restricting portion and the lower movement restricting portion are provided at steps. The strand sending device according to claim 1, wherein   The strand feeding device according to claim 1, wherein the rampage prevention member has an R added to at least a part of a bent portion of the entire shape. The rampage prevention member has a restraining portion that hits the strand that moves up and down, and an arm that extends from both ends of the restraining portion and is pivotally supported by the gap adjustment member,
The said suppression part has the cutting part cut in order to adjust a weight in the extending direction, R was attached to the corner | angular part of this cutting part, The Claim 1, 2 or 3 characterized by the above-mentioned. Strand delivery device.   In the normal state in which the strand does not hit, the anti-rambling member is in a direction in which the strand is sent from a leading edge where the strand receiving surface facing the incoming strand is in the strand traveling direction in which the strand is sent. The strand sending device according to claim 1, 2, 3, or 4, wherein the strand feeding device is set to have an upward slope toward the rear end edge.   Pellet manufacturing provided with the strand cutting device which cuts a strand into a pellet form with a rotary blade which can rotate, and a fixed blade which counters the rotary blade, and a strand sending device according to any one of claims 1 to 5. Machine.

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