JP2910011B2 - Linear body cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting a linear body such as resin bristles for a brush.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for cutting linear objects,
There are those described in JP-A-56-85308 and JP-A-62-122607.

[0003] Japanese Patent Application Laid-Open No. 56-85308 discloses an automatic wire for manufacturing a brush provided with a reciprocating knife between a rotatable drum magazine having four grooves around the wire and a wire guide. A cutting and mounting device is described. Then, after the continuous wire is intermittently supplied to the groove of the drum magazine, the wire is cut by a knife.

Japanese Patent Application Laid-Open No. Sho 62-122607 discloses a holding plate having holding holes provided at a constant pitch on a predetermined line of a plate surface, and a hair bundle supported on the holding plate with a cutter gap maintained. An apparatus for producing a hair bundle comprising a line guiding means, a hair bundle feeding means, and a cutting cutter that moves laterally across the hair bundle line in the cutter gap is described. Then, after the continuous hair bundle is intermittently supplied to the holding hole of the holding plate, the hair bundle is cut by a cutter.

[0005]

However, in the prior art, since a continuous linear body is intermittently supplied to a cutting position for cutting, there is a limit in improving the cutting ability.
In addition, there is a limit to the improvement of mechanical performance, such as the occurrence of vibration due to intermittent feeding of the linear body supply device.

[0006] Further, in the linear body cutting device, the length accuracy of the cut linear body is improved, and the angle formed by the cut end face of the linear body with respect to the axial direction of the linear body. Is desired to be as perpendicular as possible.

[0007] The present invention relates to a linear body cutting apparatus, which improves the cutting performance and mechanical performance, further improves the length accuracy of the cut linear body, and cuts the linear body. An object is to make the angle formed by the end face with respect to the axial direction of the linear body as perpendicular as possible.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a linear body cutting apparatus for cutting a continuous linear body, wherein the outer peripheral portion is provided with a width at each of a plurality of positions separated along the circumferential direction of the outer peripheral portion of the drum. A linear body holding drum provided with a linear body holding groove crossing in the direction, and a rotatable linear body holding drum; and a holding groove preceding the continuous linear body in the drum rotation direction during continuous rotation of the linear body holding drum. And a linear body supply device that continuously performs a linear body supply operation of supplying a linear body to the subsequent holding groove by making a U-turn outside the holding groove and holding the linear body holding drum A linear body cutter for cutting both U-turn portions located on both outer sides of the holding groove of the continuous linear body supplied and held in the groove, wherein the linear body cutter is a pair of linear cutters; Consists of rotating blades, at least one of which is Countercurrent plurality of positions is obtained by the so provided with a recessed groove.

[0009]

The continuous linear body is continuously supplied to the continuously rotating holding drum and then cut by the cutter. Therefore, as a result of continuous feeding of the continuous linear body, the cutting ability can be improved. Further, there is no occurrence of vibration due to intermittent feeding, and the mechanical performance can be improved.

[0010] Since the cutter is constituted by a pair of rotary blades, at least one of which is provided with concave grooves at a plurality of positions in the circumferential direction of the outer peripheral portion of the blade, the linear body is cut when the cutter is cut. Is held in the vicinity of the cut portion by the concave groove of the rotary blade, thereby preventing the rotary blade from escaping in the outer peripheral contact direction. Therefore, the linear body is cut while the center axis thereof is held perpendicular to the blade surface of the rotary blade. As a result, the accuracy of the length of the cut linear body is improved, and the cut end face of the linear body is linear. The angle made with respect to the axial direction of the body can be as orthogonal as possible.

[0011]

FIG. 1 is a schematic diagram showing an entire configuration of an embodiment of the present invention, FIG. 2 is a schematic diagram showing a main part of FIG. 1, FIG. 3 is a schematic diagram showing a turning device of a linear body supply device, FIG. 4 is a schematic diagram showing a capturing device of the linear body supply device, FIG. 5 is a schematic diagram showing a holding groove of the linear body holding drum, and FIG. 6 is a schematic diagram showing a pressing belt of the linear body holding drum. 7 is a schematic diagram showing a linear cutter having a concave groove on one of a pair of rotary blades, and FIG. 8 is a schematic diagram showing a linear cutter having a concave groove on both of a pair of rotary blades.

As shown in FIG. 1, a resin bristle producing device 10 for a brush includes a resin bristle supplying device 11 and a resin bristle holding drum 12.
, A resin bristle cutter 13, a resin bristle treating device 14, and a resin bristle discharging device 15.

As shown in FIGS. 1 and 2, the resin bristle supply device 11 has a resin bristle reel 16 having one continuous resin bristle 1 (linear body) and a dancer roll 17, and has a fixed length. The resin hair 1 is supplied to the turning device 19 and the take-in device 20 via the guide ring 18.

As shown in FIGS. 2 and 3, the turning device 19 has a traverser 23 which is reciprocally moved laterally by a crank device 22 which is rotated by a motor 21. The traverser 23 includes a guide ring 24 through which the resin bristles 1 pulled out from the guide ring 18 pass, a guide hole 25 through which the resin bristles 1 pulled out from the guide ring 24 pass, and a guide cylinder coupled to the exit side of the guide hole 25. 26, and the resin hair 1 pulled out from the guide cylinder 26 can be reciprocated and laterally moved on the front surface of the resin hair holding drum 12.

As shown in FIGS. 2 and 4, the capturing device 20
On both sides of the resin bristle holding drum 12, a pair of left and right intake drums 27, 27 that rotate in synchronization with the drum 12 are arranged. Each of the take-in drums 27 is provided with a take-up pin 28 at a plurality of positions along the circumferential direction of the outer peripheral portion of the drum, which is moved in and out of the drum radial direction by a cam mechanism (not shown).

That is, in the resin hair supply device 11, during continuous rotation of the resin hair holding drum 12 and the take-in drum 27,
The resin bristles 1 pulled out from the guide tube 26 of the turning device 19 are reciprocated and laterally moved on the front surface of the drum 12, so that the resin bristles 1 around the protruding capture pins 28 of the capture drum 27 located on one side of the drum 12. U-turn and hooking on the bulging head 28A, U-turning again around the take-in pin 28 of the taking drum 27 located on the other side of the drum 12, and hooking on the bulging head 28A. repeat.
Then, the resin bristles 1 on the left and right take-up drums 27
Are successively hooked in a U-turn shape,
Thereafter, the U-turn-shaped resin hairs 1 that have been immersed and locked on the bulging head 28A are turned into resin hair holding grooves 31 provided in the resin hair holding drum 12 that is rotating in synchronization with the take-in drum 27. To move away from the resin bristles 1.

The resin bristle holding drum 12 is provided with a holding groove 31 that crosses the outer peripheral portion in the width direction at each of a plurality of positions separated along the circumferential direction of the outer peripheral portion of the drum (FIG. 5). At this time, the holding drum 12 is driven by the above-described motor 21 via the gear transmission 32 and continuously rotates in conjunction with the reciprocating lateral movement of the traverser 23. In this embodiment, the front and rear holding grooves 31 adjacent to each other at the outer peripheral portion of the drum are inclined in directions opposite to each other with respect to the circumferential direction.

Thus, the above-mentioned resin hair supply device 11
During the continuous rotation of the holding drum 12,
The U-turn-shaped resin bristles 1 hooked and held by the respective take-in pins 28 of the drum 7 and 27 are held in the holding grooves 3 that precede in the drum rotation direction.
1, while the U-turn is performed outside the holding groove 31, the resin hair supply operation to supply the subsequent holding groove 31 is continuously performed.

The brush bristle bristle making apparatus 10 has a pressing belt 33 along the outer periphery of the upper half of the holding drum 12 (FIGS. 5 and 6). The pressing belt 33 is provided with turning rollers 34, 34 provided between the resin bristle supply device 11 and the resin bristle discharge device 15 around the holding drum 12.
And continuously rotates with the holding drum 12 while being attached to the outer peripheral surface of the holding drum 12. As a result, the resin bristles 1 supplied to the holding groove 31 of the holding drum 12 as described above are pressed by the pressing belt 33 and are reliably held in the holding groove 31.

The pressing belt 3 with respect to the holding drum 12
3, a pair of turning rollers 34
And guide plates 34a located on both outer sides of the guide plate 34a. The guide plate 34a is moved from the guide cylinder 26 to the holding groove 3
1 so that the resin bristles 1 supplied to the resin bristles 1 do not come off from the holding grooves 31 before being pressed by the holding belt 33.
Is to guide.

As shown in FIG. 2, the resin bristle cutters 13 are arranged on both sides of the resin bristle holding drum 12 in a downstream area of the take-in drum 27 along the outer circumference of the resin bristle holding drum 12. The two resin bristle cutters 13 are provided with the holding grooves 3 of the holding drum 12.
The U-turn portions of the resin bristles 1 supplied and held at the outer sides of the holding grooves 31 are cut.
Each cutter 13 has a pair of upper and lower rotary blades 35A, 35B.
And the resin bristles 1 are sheared between the cutting blades of both rotary blades 35A and 35B.

As shown in FIG. 2, the resin hair treatment device 14
On both sides of the resin bristle holding drum 12, the resin bristle cutter 1
3 located downstream. The resin hair treatment device 14
Both ends of the resin bristles 1 that are cut by the resin bristle cutter 13 and held in the holding grooves 31 and face both sides of the holding drum 12 are subjected to heat treatment. The processing device 14 can be configured by an electric heater, a gas burner, and the like. The resin bristles 1 are rounded at the tip by heat treatment, and have a gingival massage effect and the like.

The resin hair discharging device 15 is a resin hair accumulating device 3.
6 and a gripper 37. The resin bristle accumulating device 36 receives the resin bristles 1 released from the pressing belt 33 so as to scoop the resin bristles 1 from the holding grooves 31 of the holding drum 12 in a downstream area of the resin bristle treating device 14 around the holding drum 12. 1 are sequentially accumulated. The gripper 37 is
The accumulated resin hairs 1 can be taken out in a fixed amount in a bundle.

In the present embodiment, however, the resin bristle cutter 13
The pair of upper and lower rotating blades 35A, 35B constituting the following (A)
Or (B).

(A) The upper rotary blade 35A which is one of the pair of rotary blades 35A and 35B constituting the resin bristle cutter 13.
The concave groove 101 is provided at a plurality of circumferential positions on the outer peripheral portion of the blade (or the lower rotary blade 35B) (FIGS. 7A to 7C).
(D)).

FIG. 7A shows the upper and lower rotary blades 35A, 3A.
FIG. 7 (B) shows the case where the cutting angle of the upper rotary blade 35A is a right angle, the case where the cutting angle of the lower rotary blade 35B is an acute angle, and FIG. The cutting edge angle of the rotary blade 35A is an acute angle, and the cutting edge angle of the lower rotary blade 35B is a right angle,
FIG. 7D shows the upper and lower rotary blades 35A and 35B both having acute cutting edge angles.

(B) Concave grooves 101 and 102 are provided at a plurality of positions in the circumferential direction of the outer peripheral portion of both of the pair of rotary blades 35A and 35B constituting the resin bristle cutter 13 (FIGS. 8A to 8C).
(C)).

FIG. 8A shows the upper and lower rotary blades 35A, 3A.
8B, the cutting edge angle of both the upper rotary blade 35A is an acute angle, the cutting edge angle of the lower rotary blade 35B is a right angle, and FIG. Rotating blade 35A,
The cutting edge angles of 35B are both acute angles.

The operation of this embodiment will be described below. The continuous resin bristles 1 are continuously supplied to a continuously rotating holding drum 12 and then cut by a cutter 13. Therefore, as a result of continuous feeding of the continuous resin hairs 1, the cutting ability can be improved. Further, there is no occurrence of vibration due to intermittent feeding, and the mechanical performance can be improved.

The resin bristle cutter 13 includes a pair of rotary blades 35.
A and 35B, at least one of which is provided with concave grooves 101 and 102 at a plurality of positions in the circumferential direction of the outer peripheral portion of the blade, so that when the resin hair 1 is cut by the cutter 13, The cut portions are held in the vicinity of the cut portions by the concave grooves 101 and 102 of the rotary blades 35A and 35B, and the escape of the rotary blades 35A and 35B in the outer peripheral contact direction can be suppressed. Therefore, the resin bristle 1 has its center axis at the rotary blade 35A,
As a result of being cut while being held perpendicular to the blade surface of 35B, the length accuracy of the cut resin bristles 1 is improved, and the angle formed by the cut end surface of the resin bristles 1 with respect to the axial direction of the resin bristles 1 is as perpendicular as possible. Shape.

[0031]

As described above, according to the present invention, in a linear body cutting apparatus, the cutting performance is improved, the mechanical performance is improved, and the length accuracy of the cut linear body is improved. And
Further, the angle formed by the cut end face of the linear body with respect to the axial direction of the linear body can be made as perpendicular as possible.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an entire configuration of an embodiment of the present invention.

FIG. 2 is a schematic view showing a main part of FIG. 1;

FIG. 3 is a schematic diagram showing a turning device of the linear object supply device.

FIG. 4 is a schematic view showing an intake device of the linear object supply device.

FIG. 5 is a schematic view showing a holding groove of a linear body holding drum.

FIG. 6 is a schematic view showing a pressing belt of a linear body holding drum.

FIG. 7 is a schematic view showing a linear cutter having a concave groove on one of a pair of rotary blades.

FIG. 8 is a schematic view showing a linear cutter having concave grooves on both of a pair of rotary blades.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Resin hair (linear body) 11 Resin bristle supply device 12 Resin bristle holding drum 13 Resin bristle cutter 31 Holding groove 35A, 35B Rotary blade 101, 102 Concave groove

────────────────────────────────────────────────── (5) References JP-A-58-28413 (JP, A) JP-A-57-84899 (JP, A) JP-A-4-58119 (JP, U) (58) Survey Field (Int.Cl. ⁶ , DB name) A46D 1/06 B26D 1/24

Claims (1)

(57) [Claims] 1. An apparatus for cutting a linear body for cutting a continuous linear body, wherein a linear body holding groove crossing the outer peripheral portion in a width direction at each of a plurality of positions separated along a circumferential direction of an outer peripheral portion of a drum. A linear body holding drum capable of being continuously rotated, and a continuous linear body being supplied to a holding groove preceding in the drum rotation direction during continuous rotation of the linear body holding drum; A linear body supply device that continuously performs a linear body supply operation of making a U-turn on the outer side of the linear body and supplying the linear body to a subsequent holding groove; A linear body cutter for cutting both U-turn portions located on both outer sides of the holding groove of the continuous linear body, the linear body cutter comprising a pair of rotary blades, at least of which One side has concave grooves at multiple positions in the circumferential direction Cutting device of the linear member, characterized in that Ete made.