JPH02475Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a slitting device for a knit tape manufacturing machine that manufactures a knit tape by continuously cutting a cylindrical circular knit in a spiral shape.

(Prior Art) Conventionally, as a slitting device for this type of knitted tape manufacturing machine, there has been known, for example, the one described in Japanese Patent Application No. 60-200891 filed by the applicant of the present application. This conventional slitting device first cuts a wide tape corresponding to the amount fed by the feed guide mechanism almost along the edge of the feed guide mechanism using a pair of cutting round blades that mesh with each other. Next, the wide tape is corrected for distortion using a tension rod, fed by a feed roller, and cut into thin tape by a rotary blade on a platen roller.

(Problem to be solved by the invention) However, the slitting device of the conventional knitted tape manufacturing machine described above cuts the tape into wide tapes, then applies feeding force with the feeding roller in the middle, and presses the tape on the platen roller. In addition to the fact that the entire slitting device is large and has a relatively complicated structure, there is no special guide means in front of the round blade for cutting wide tapes, so the cutting line may meander, making it difficult to maintain a stable width. The problem was that the tape could not be cut.

The present invention was developed in view of the above-mentioned conventional problems.The purpose of the present invention is to have a compact and lean structure, and to instantly cut one or more tapes of a stable width even during high-speed cutting. To provide a slitting device for a knitted tape manufacturing machine that can cut a knitted tape.

(Means for Solving the Problems) The means of the present invention for achieving the above object will be explained using FIGS. 1 to 5 corresponding to the embodiments. On the base 10, the cylindrical circular knit N is horizontally supported on the drive part 12 and rotated around the longitudinal axis x, and the outer surface is covered with a taut state. While being rotated, a predetermined amount is fed toward the end of the feeding guide mechanism 30 in the longitudinal direction by the feeding guide mechanism 30 corresponding to each set speed of the rotation speed and the feeding speed. Round knit end N
1, a slitting device 2 cuts the knit tapes n ₁ , n ₂ , n ₃ into an appropriate number of pieces in a spiral shape.
The slitting device 2 is installed adjacent to the outer surface of the feeding guide mechanism 30 in the feeding direction, and the cutting blades 21, 22, 23 of the slitting device 2
In front of the feed guide mechanism 30, a guide means 27 consisting of, for example, an elongated rolling roller having an outer peripheral surface with a large coefficient of friction is provided in the direction of the composite vector of the rotational speed of the feed guide mechanism 30 and the feed speed. .

(Function) The present invention provides the feeding guide mechanism 3 by the above means.
0 from the opening edge N1 of the cylindrical circular knit N covered in a stretched state on the outer surface of the feeding guide mechanism 3.
0 to cut a predetermined number of tapes n ₁ , n ₂ , n ₃ corresponding to the number of cutting blades 21 , 22 , 23 set in a spiral shape and set to a desired width. , in front of the cutting blades 21, 22, and 23, a guide means 27 having a guide direction that substantially coincides with the direction of the composite vector of the rotation speed and the feed speed of the feed guide mechanism 30.
By installing this, the open edge of the circular knit that has been fed and protruded from the edge of the feeding guide mechanism 30 and has shrunk back to its original position is stably fed toward the cutting blades 21, 22, and 23. To stably and instantly cut a tape of a predetermined width without meandering, and to provide a slitting device with a simple structure.

(Example) Hereinafter, a typical example of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 5, the knit tape manufacturing machine 1 according to the present invention includes a machine stand 10 installed horizontally, and a base frame 1 on one side of the machine stand 10.
1, a turntable 3 whose receiving surface is horizontally supported so as to be rotatably driven, and on which a circular knit N, which is continuously formed into a cylindrical shape by circularly knitting cotton thread or the like, is folded and placed on the receiving surface; , is rotatably supported around the longitudinal horizontal axis x of the machine base 10 by a box frame 12 forming the drive section on the other side of the machine base 10, and the open end of the circular knit N is stretched outside. a feeding guide mechanism 30 that covers the side surface and feeds boxes toward the box frame; an operating mechanism 40 that operates a plurality of feeding means 35 spaced apart in the circumferential direction of the feeding guide mechanism 30; An end portion in the feeding direction of the guide mechanism 30 adjacent to the feeding direction end portion N1 of the circular knitted knitted material and having a width equal to the feeding amount from the circular knitted knitted material N1 which is arranged in the box frame 12 and fed while rotating. Install N1 cutting blades 21, 22, 2
3, and a winding mechanism 60 for winding the cut tapes _n1 to _n3 . Further, a diameter adjustment mechanism 70 that uniformly expands or contracts the outer diameter of the feeding guide mechanism 30 in the radial direction in response to circular knitted knits N having different inner diameters, and a diameter adjusting mechanism 70 that uniformly expands or contracts the outer diameter of the feeding guide mechanism 30 in the radial direction, and a change in the outer diameter of the feeding guide mechanism 30. A position adjustment mechanism 77 is provided for adjusting the levels of the cutting blades 21, 22, 23 of the cutting device 2 so that they always maintain a predetermined positional relationship with respect to the outer surface of the cutting device 2 in synchronization with the cutting device. Since it is explained in the knit tape manufacturing apparatus (see Japanese Patent Application No. 60-200891), the explanation will be omitted here.

The turntable 3 is provided with a vertical support shaft 3c having a bevel gear 3a fixed to its lower end at the center of its bottom, and a bevel gear 3 that meshes with the bevel gear 3a at one end.
b is fixed and the timing belt pulley 4a is attached to the other end.
It is rotationally driven by an electric motor 81 and a speed reducer 82 as a driving source via a horizontal intermediate shaft 4 to which is fixedly attached. The gear ratio of both bevel gears 3a and 3b is 1, and the diameter of the pulley 4a is the same as that of the pulley 31 which directly rotates the feed guide mechanism 30 by the motor 81 and reducer 82 via the timing belt 83. The turntable 3 is rotationally driven in the direction of arrow A in synchronization with the feeding guide mechanism 30.

The feeding guide mechanism 30 has the above-mentioned pulley 31 at one end.
A large-diameter disk 33 is fixed perpendicularly to the other end of the hollow support shaft 32 which is horizontally supported on the box frame 12, and a large-diameter disk 33 is fixed at right angles to the other end of the hollow support shaft 32, which is horizontally supported on the box frame 12. a small-diameter circular ring body 34 rotatably supported by the outer periphery of a bearing ring 75 that is slidably supported by a guide rod 74 of the adjustment mechanism 70 and whose position is regulated in the longitudinal direction of the shaft;
A large number of feeding means 3, for example, 20 sets, are arranged in the circumferential direction via an X-shaped link mechanism 72 that can be opened and closed between the disk 33 and the circular ring body 34.
5, and the pulley 81 is driven by a motor 81.
a, the speed reducer 82 is rotated via the timing belt 81b and the pulley 82a, and its output pulley rotates around the axis x in the direction of arrow B via the belt 83 and the pulley 31. Feeding means 35
are a pair of links 72a, 72 that are pivotably connected to each other in the center with a pin and form an X-shaped link mechanism 72.
Brackets 36a, 36 attached to the outer ends of b
A belt pulley 37 rotatably supported on b.
a, 37b, and a belt 38 wound between these pulleys 37a, 37b. A thin sponge plate having high friction against the circular knitted knit N is attached to the outer surface of the belt 38. The bracket 36a on the side of the disk 33 is fixed to the link 72a, and the other bracket 36b is attached to the link 72b via an elongated hole and a sliding pin to allow the opening/closing legs of the X-shaped link mechanism 72 to operate. There is. The inner end of the link 72a is rotatably supported on the outer periphery of the small diameter circular ring body 34 by a support bracket 34a, and the inner end of the link 72b is pivoted on the outer periphery of the inner surface of the large diameter disk 33. Support body 3 protruding from the part
It is pivotably supported by 3a. A reverse ski-shaped guide rod 39 is fixed to the bracket 36a at the same level as the outer surface of the belt 38.

Actuation mechanism 40 for actuating the feeding means 35
The timing belt transmission section 41 provided in the X-shaped link mechanism 72, the gear power transmission means 42 provided on the outer surface of the disk 33 so as to transmit rotational force to the transmission section 41, and the transmission means 42. An intermediate drive shaft 43 rotatably inserted into the hollow support shaft 32 so as to transmit rotational force, a timing belt pulley 44a fixed to an input end of the drive shaft 43 in the box frame 12, and the above-mentioned 2 axes 32, 4
Transmission 45 as a means for adjusting the relative difference in rotation between
Timing belt pulley 4 fixed to the output shaft of
4b and a timing belt 44c wound between these pulleys 44a and 44b; a transmission 45; and a timing belt 8 fixed to the input shaft of the transmission 45.
An input section 46 including a timing belt pulley 46a that receives the rotational output of the electric motor 81 via 1b.
It is composed of. Further, the timing belt transmission section 41 is fixed to both ends of a timing belt pulley 41a coaxially connected integrally with a belt pulley 37a supported by a support bracket 36a, and a central connecting pin 72c of an X-shaped link mechanism 72, respectively. intermediate timing belt pulley 41b, 4
1c and a timing belt pulley 41d fixed to a pin 42a supported by the support body 33a, and a timing belt 41 wound between each pulley.
It is composed of e and 41f. The transmission 45 includes a timing belt pulley 46 on the input shaft.
A speed change input sprocket wheel 45a is provided to change the speed input to the input sprocket wheel 45a and the speed output to the timing belt pulley 44b fixed to the output shaft. It is regulated via chain 45c.

The slitting device 2 includes a support base 24 whose level is controlled so that the cutting point is at approximately the same level as the outer surface of the feeding belt 38 of the feeding means 35.
and a pair of upper and lower support rods 20 that are supported on the support base 24 and are provided with three pairs of cutting round blades 21, 22, 23 that are arranged in the longitudinal direction of the machine base 10 and mesh with each other at the top and bottom.
a support box 25 rotatably supporting a and 20b;
A rotational force transmission means 26 rotates a pulley 26a of the lower support rod 20b in order to transmit rotational force to the cutting round blades 21, 22, and 23, and a rod 24a protruding from the support 24 in the longitudinal direction of the machine. It consists of a roll-shaped guide means 27 installed in front of the cutting round blades 21, 22, 23 via a fixable universal joint 27a. The support rods 20a and 20b are connected to the support box 2
5 and are interlocked via a pair of gears 20c that mesh with each other. Further, the lower support rod 20b, which receives rotational input from the rotational force transmission means 26, is connected to an input portion of a pulley transmission 61 that drives the winding mechanism 60. The cutting round blades 21, 22, 23 are set at appropriate intervals on the support rods 20a, 20b by lock bolts b via fastening means 20d, and the number of fastening means 20d can be increased or decreased as necessary. It consists of a sleeve 20d' that extends through the support rods 20a and 20b and is fixed by a bolt b, and a nut 20d'' that is screwed into a screw on the outer periphery of the sleeve and tightens the cutting round blade. The blade has a known structure in which it is biased by a spring S against the upper cutting blade.

The roll-shaped guide means 27 has a knit N on the outer periphery.
It is composed of a rolling roll wrapped with a porous urethane foam sleeve having a large coefficient of friction against the rotating speed V1 and feeding speed set in the feeding guide mechanism 30 at least in the plane seen from above. It is set and fixed by the universal joint 27a so that the guiding direction is in the direction of the composite vector V3 with V2. In this example, the vertical plane seen from the front is also inclined at an angle of about 10 degrees, and the end N1 of the circular knitted knit, which has been fed and shrunk back to its original position, is cut by the round blade 2.
1, 22, and 23, the supply is guided while being constantly corrected to be flat. The guide means 27 and the round blades 21, 2
It is also possible to further equalize the cutting conditions by appropriately interposing a horizontal guide rod 29 between the cutters 2 and 23.

The rotational force transmission means 26 that rotationally drives the pulley 26a of the lower support rod 20b via the timing belt 26b includes an elbow-shaped intermediate transmission section 26c consisting of a pulley and a timing belt, and the intermediate transmission section 26c.
and a rotational speed adjusting means 55 for transmitting rotational driving force in an automatically variable speed manner. When the diameter of the feeding guide mechanism 30 is changed by the diameter adjusting mechanism 70 according to the inner diameter of the circular knitted knit N, the rotation speed adjusting means 55 adjusts the cutting circular blades 21, 22, 23 is adjusted in conjunction with the operation of the diameter adjusting mechanism 70 using a motor 71 as a drive source.

The winding mechanism 60 is rotationally driven via a pulley transmission 61 and an intermediate transmission means 62 consisting of a pulley and a timing belt by the output part of the transmission 61, and is cantilevered on a support frame 63 on the support base 24. A rubber-lined winding drive rod 64 rotatably supported in a shape, a winding rod 65 supported above the drive rod 64 so as to be able to abut and swing freely, and round cutting blades 21, 22, 23 and a plurality of tension rods 66 spaced parallel to each other between the winding drive rod 64 and the winding drive rod 64. The tape n ₁ is always drawn at a constant speed by the drive rod 64.
n ₂ and n ₃ are wound onto the winding rod 65.

(Effects of the invention) As described above, according to the slitting device 2 of the knitted tape manufacturing machine of the invention, the opening of the cylindrical circular knit N covered in a stretched state on the outer surface of the feeding guide mechanism 30 The cutting blades 21, 2 cut the tapes n ₁ , n ₂ , n ₃ into desired widths in a spiral shape by being rotated and fed by the feeding guide mechanism 30 from the edge N1.
2 and 23, the guide means is provided so that the guide direction substantially coincides with the direction of the composite vector of the rotational speed of the feeding guide mechanism 30 and the feeding speed.
By correcting the opening short edge N1 of the circular knitted knit that protrudes from the edge of the feeding guide mechanism 30 and shrinks back to its original position, the tape is stably fed toward the cutting blades 21, 22, and 23, and has a predetermined width without meandering. cutting is realized, and the slitting device itself can be configured to be compact.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of a knitted tape manufacturing machine equipped with the slitting device of the present invention, Fig. 2 is a plan view of the embodiment, and Fig. 3 is an explanatory diagram showing the power transmission system of the embodiment. , FIG. 4 is a right side view of the same embodiment, and FIG. 5 is a perspective view of the cutting blade. Explanation of symbols, 1... Knit tape manufacturing machine, 2...
...Slitting device, 10...Machine stand, 21,2
2, 23...cutting blade, 27...guiding means, 30...
...Feeding guide mechanism, N...Circular knitting, N1...
Circular knit end, n ₁ , n ₂ , n ₃ ... knit tape, X ... longitudinal axis of feeding guide mechanism.

Claims (1)

[Claims for Utility Model Registration] 1. A feeding guide which is rotatably driven around the longitudinal axis x on the machine base 10 and feeds the circular knit N whose outer surface is covered in a stretched state in the longitudinal direction. A knit tape n ₁ ,
A slitting device 2 that cuts n ₂ and n ₃ in a spiral shape, the slitting device 2 is installed adjacent to the outer surface of the feeding guide mechanism 30 in the feeding direction, and the cutting blade 21 of the slitting device . Slitting device. 2. The slitting device for a knitted tape manufacturing machine according to claim 1, wherein the guide means 27 is an elongated rolling roller having an outer peripheral surface with a large coefficient of friction.