JP2962486B2 - Device for attaching / detaching knitting fabric take-up roll in circular knitting machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for attaching and detaching a knitting fabric take-up roll in a take-up section of a circular knitting machine.

[Prior Art] In general, as is known in a circular knitting machine, a cylindrical knitted fabric knitted by a knitting portion is provided with two or three delivery rolls provided in a winding portion below the knitting portion. And then wound flat by a take-up roll disposed below. The winding unit automatically stops at a fixed position after winding the knitted fabric of a required length.

In the invention disclosed in Japanese Patent Application Laid-Open No. 2-191175, the take-up part stopped at a fixed position is automatically unlocked at one end base of the take-up roll, and then is operated by a movable arm disposed outside the take-up roll. One end base of the take-up roll is rotated, and the take-up roll for each knitted fabric is moved onto a knitted fabric expulsion device provided below the take-up section. The operation of the movable arm is performed by driving means such as a geared motor and an air cylinder which make the base of one end of the winding roll detachable in the axial direction of the winding roll.

The side of the knitted fabric on the knitted fabric ejection device is pressed by an ejection plate provided in the knitted fabric ejection device and discharged to the outside of the machine.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, the movable arm for rotating the take-up roll has room for improvement in the following points. That is, when the winding amount is increased and the weight of the knitted fabric is increased, it may not be easy to escape the movable arm from the winding roll, and further, the winding roll for each knitted fabric may be rotated. This means that the geared motor to be used is extremely loaded and may damage the geared motor.

The present invention has been made in order to solve the above-described problems of the related art, and an object thereof is to prevent a large load from being applied to a geared motor when rotating a take-up roll for each knitted fabric. It is an object of the present invention to provide a winding roll attaching / detaching device.

[Means for Solving the Problems] A take-up roll attaching / detaching apparatus in a take-up section of a circular knitting machine of the present invention that achieves the above object has a first structure in which one of frames of a rotary take-up section for taking up a knitted fabric has Connect one base with a universal joint,
A knitted fabric take-up roll having a second base at the other end detachably supported on the other side of the frame, a knitted fabric on the knitted fabric take-up roll positioned adjacent to the rotary take-up portion and wound up A knitting fabric ejection device that receives the roll and discharges the knitted fabric out of the machine, and a movable arm that moves between a winding position and a discharge position of the knitted fabric while supporting the knitting fabric take-up roll, wherein the movable arm is An elastically supported engaging / disengaging means for engaging and disengaging the second base of the winding roll is provided, and the winding roll is arranged around the first base to discharge the knitted fabric after winding. When turning, when the weight of the knitted fabric on the take-up roll is superior to the elasticity of the engagement / disengagement means, the take-up roll naturally falls on the knitted fabric expulsion device over the tip projection by its own weight, and When the weight of the knitted fabric is insufficient, the take-up roll is placed on the knitting fabric ejection device. , So that the load on the take-up roll attaching / detaching device can be reduced regardless of the weight of the knitted fabric.

Preferably, the resiliently supported engaging / disengaging means for engaging and disengaging the second base portion of the winding roll comprises a hook portion, a rotating lever, and a spring, and the rotating lever rotates to the hook portion. A tip protrusion that is supported so as to engage and disengage the second base of the winding roll.

According to the present invention, when the movable arm is rotated and the weight of the fabric on the take-up roll is large, the rotary lever attached to the movable lever overcomes the elasticity of the spring and rotates. The knitting fabric take-up roll falls naturally.

Also, when the weight of the knitted fabric is small, the elasticity of the spring is superior and the rotating lever does not rotate, and the movable arm rotates to the same position as the drop position while holding the winding roll.

As described above, according to the present invention, when the weight of the knitted fabric on the take-up roll is large, the load at the time of rotating the movable arm can be reduced, and therefore, a geared motor for rotating the movable arm having a small capacity can be used. .

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1 to FIG. 3, a winding unit 1 for winding a knitted fabric F on a winding roll while rotating in synchronization with a cylinder (not shown) of a circular knitting machine is provided on the lower side of the cylinder.

The take-up roll 2 of the take-up unit 1 has a roll surface configured to be tapered, and has short axes 3 and 4 provided at both ends thereof, and is rotatably supported by the take-up frames 5 and 6. I have.

The short shaft 3 on the large-diameter portion side of the winding roll 2 is a universal joint so that the winding roll 2 can rotate.

The short axis 4 on the small diameter portion side is formed by a C
It is supported by a semi-circular bearing device (not shown) provided above the C-shaped opening 6a (see FIG. 2) and the C-shaped opening 6a and movable vertically.

After the bearing device is moved upward, a roll attachment / detachment device 7 for removing the short shaft 4 from the C-shaped opening 6a is provided below the winding unit 1. This roll attaching / detaching device 7
A movable arm 8 (which will be described later in detail), which is a feature of the present invention;
A drive unit 9 for operating the movable arm 8 is provided.

The drive unit 9 includes an air cylinder 10 and a geared motor.
11 and spur gears 12 and 13.

A spur gear 12 is attached to the geared motor 11, and the spur gear 12 is engaged with the spur gear 13. The spur gear 13 is attached to a shaft 14, and the shaft 14 is supported by bearings 15,16.

Channel type bracket 17 and pedestal on shaft 14
18 is fixed.

The movable arm 8 is rotatably provided on the bracket 17 with the pin 19 as a fulcrum.

The movable arm 8 is outside the frame 6, and the upper portion extends to the short axis 4.

On the other hand, the air cylinder 10 is attached to the pedestal 18 in parallel with the shaft 14, and when the shaft 14 rotates, the air cylinder 10 attached to the pedestal 18 also rotates.

A block 20 attached to the tip of the shaft of the air cylinder 10 and an L-shaped bracket 21 are connected by pins 22. The other end of the L-shaped bracket 21 is fixed to the lower back of the movable arm 8 by a bolt or the like.

Therefore, the movable arm 8 is moved by the air cylinder 10 in a direction in which the movable arm 8 is engaged with the short axis 4 of the winding roll when the winding section 1 stops at a fixed position.

Next, the movable arm 8 is rotated in a state of being engaged with the short shaft 4 by the operation of the geared motor 11, and the winding roll 2 escapes from the C-shaped opening 6 a of the winding frame 6.

As shown in FIGS. 4 and 5, the movable arm 8, which is a characteristic part of the present invention, has a hook portion for supporting the short shaft 4 at the upper end.
23, a rotation lever 24 for receiving the short shaft 4, and a spring 25.

The hook 23 is attached to a triangular member 27 fixed to the arm 26. The hook 23 has an opening 23a facing the same direction as the C-shaped opening 6a of the frame 6, and a hook 23.
A notch 23b penetrating through the inside and outside is provided. Cut hole 2
A rotation lever is provided inside 3b so that it can be rotated by the pin 28.
24 are accommodated.

A protruding portion 24a is provided at the tip of the rotating lever 24, and protrudes from the opening 12a. The other end of the rotating lever 24 has a spring 2
5 is installed. The other end of the spring 25 is a triangular member 27
Attached to.

 The operation of the above-described device will be described.

When a knitted fabric of a required length is wound on the winding roll 2, the winding section stops at a fixed position.

When the winding unit stops at the fixed position, first, the air cylinder 10 operates to move the movable arm 8 to the short shaft 4 side.
Next, the geared motor 11 operates, and the movable arm 8 rotates while the short shaft 4 is supported (see FIG. 3).

At this time, when the weight of the knitted fabric is superior to the elasticity of the spring 25 due to the rotation of the movable arm 8, the knitted fabric exceeds the tip protrusion 24 a of the rotating lever 24, and the winding roll 2 for each knitted fabric is moved. The knitted fabric is dropped onto the knitting fabric ejection device 29 (see FIG. 2).

Also, when the weight of the knitted fabric is light, the elasticity of the spring 25 is excellent, so that the knitted fabric cannot cross the tip protrusion 24a of the rotating lever 24, and the knitted fabric remains supported by the winding roll 2. The take-up roll 2 is placed on the knitting fabric drive-out device 29.

The movable arm 8 that has moved onto the knitting fabric ejection device 29 is returned to the original outer position where it does not engage with the winding roll 2.

The knitted fabric on the knitted fabric ejection device 29 is discharged out of the machine by an ejection plate movable on the knitted fabric ejection device 29 waiting behind the knitted fabric. As the knitted fabric is discharged out of the machine, the take-up roll is stably supported by a positioning portion 30 having a V-shaped cross section or a lower semicircular shape provided on the knitted fabric ejection device 29.

After the knitted fabric is discharged out of the machine, if the movable arm 8 is operated in the opposite direction as described above, the winding roll 2 left on the knitted fabric ejection device 29 is accommodated in the C-shaped opening 6a of the frame 6. . Since the take-up roll 2 is always located at the roll positioning portion 30 on the upper surface of the knitting fabric ejection device, the take-up roll 2 is moved from this position.
Is easily accommodated in the C-shaped opening 6a. In this state, preparation for the next winding is started.

The take-up roll attaching / detaching device is merely an example, and does not limit the present invention. Various changes, improvements, and modifications can be made within the scope of the claims.

[Effects of the Invention] According to the take-up roll attaching / detaching device of the present invention, when the weight of the knitted fabric is large, the rotating lever rotates against the spring and the take-up roll for each knitted fabric falls naturally. When the weight of the knitted fabric is small, the rotating lever does not rotate due to the elastic force of the spring. Accordingly, there is an advantage that the load at the time of rotating the movable arm can be reduced, and a geared motor for rotating the movable arm can be used with a small capacity.

[Brief description of the drawings]

The accompanying drawings show an embodiment of the present invention. FIG. 1 is an elevational view of the winding section. FIG. 2 is a side view of FIG. FIG. 3 is a sectional plan view showing a section taken along line 3-3 of FIG. 4 and 5 show an attaching / detaching device, FIG. 4 is a front view, and FIG. 5 is a side view of FIG. 4. 2... Take-up roll, 8. 24… Rotating lever 25 …… Spring

Claims (3)

(57) [Claims] A first base (3) is connected to one side (5) of a frame of a rotary winding section (1) for winding a knitted fabric (F) by a universal joint, and a second base (4) at the other end is provided. ) Is removably supported on the other side frame (6).
A knitting fabric ejection device (29) that is positioned adjacent to the rotating take-up section (1), receives the knitted fabric roll on the knitted fabric take-up roll that has been wound, and discharges the knitted fabric roll out of the machine; A movable arm (8) that moves between a take-up position and a discharge position of the ground while supporting the knitted fabric take-up roll (2); and the movable arm (8) is a second arm of the take-up roll. An elastically supported engaging / disengaging means for engaging and releasing the base (4) is provided, and the winding is performed around the first base (3) in order to discharge the knitted fabric (F) after winding. When the take-up roll (2) is rotated, if the weight of the knitted fabric on the take-up roll is superior to the elasticity of the engaging / disengaging means, the take-up roll rides over the tip protrusion (24a) by its own weight and the knitted fabric ejection device. (29) When the fabric falls naturally and the weight of the knitted fabric is insufficient, the take-up roll is ejected from the knitted fabric. (29) The winding roll in the winding section of the circular knitting machine, characterized in that the winding roll is held up to the upper position, thereby reducing the load on the winding roll attaching / detaching device regardless of the weight of the knitted fabric. Detachable device. 2. A resiliently supported engaging and disengaging means for engaging and disengaging the second base (4) of the winding roll comprises a hook (23), a rotating lever (24), and a spring ( 25. The device according to claim 1, comprising 25). 3. A rotation lever (24) is rotatably supported by a hook (23) and has a tip projection (24a) for engaging and disengaging a second base (4) of the winding roll. An apparatus according to claim 2.