JPH06104540B2 - Bobbin holding method and bobbin holder - Google Patents

Description

The present invention relates to a method of inserting and holding a plurality of bobbins of a bobbin holder at the same time.

[Prior art]

Generally, in the case of winding a plurality of yarns on a plurality of bobbins at the same time, a bobbin holder having a structure as described in JP-B-47-37566 is used. In this bobbin holder, a shaft body rotatably mounted on a machine frame is inserted into a cylinder body, and a grip ring is interposed between the cylinder body and the shaft body, and a pressing force is applied to the grip ring in the longitudinal direction of the shaft center. The bobbin is gripped by pressing the inner peripheral surface of the bobbin so as to project in the diameter direction. Further, in order to uniformly hold each bobbin by the holding ring, there has been proposed a bobbin holder configured to change the outer diameter dimension of the holding ring or the hardness of the holding ring. The bobbin holder having such a structure is described, for example, in Japanese Utility Model Publication No. 48-38907 and Japanese Patent Publication No. 48-26102.

[Problems to be Solved by the Invention]

Even if a plurality of bobbins are gripped at the same time by changing the outer diameter of the grip ring or the hardness of the grip ring as described above, there are processing errors, frictional resistance, etc. It is almost impossible to deform a plurality of bobbins at substantially the same time. Therefore, if the grip ring at the tip or in the middle extends first and grips the bobbin, the bobbin does not move even if pressure is applied from the tip side of the bobbin holder, so the grip ring after the grip ring is pushed. No pressure is applied and the bobbin is not gripped. Therefore, there is a problem that vibration or the like occurs during the winding operation of the yarn.

[Purpose] An object of the present invention is to ensure that all bobbins fitted into the bobbin holder can be gripped.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the bobbin holding method of the present invention is such that, as in claim 1, the tubular body is inserted into the axial body rotatably mounted on the machine frame, and between the tubular body and the axial body. A gripping ring is interposed, and when a plurality of bobbins are gripped on the bobbin holder that grips the bobbin by pressing the inner diameter of the bobbin by pressing it against the gripping ring in a diametrical direction to grip the bobbin. Of the bobbin is inserted into the bobbin holder and a pressing force is applied to the grip ring to make each bobbin in a temporary grip state, and the pressing force on the grip ring is removed at least once to temporarily hold the bobbin. Then, the bobbin is gripped by applying a pressing force to the grip ring.

In addition, a plurality of bobbins are inserted into the bobbin holder so as to have a predetermined space with respect to the bobbin positioning flange formed on the shaft, and a pressing force is applied to the grip ring. So that each bobbin is in a state of temporary gripping,
In a state where the pressing force on the grip ring is removed at least once to temporarily release the grip of the bobbin, and then the pressing force is applied to the grip ring to bring each bobbin into contact with the bobbin positioning flange. It can also be gripped.

Further, according to the bobbin holder of the present invention, the cylindrical body is fitted and inserted into the shaft body rotatably mounted on the machine frame as described in claim 3, and the grip ring is interposed between the cylindrical body and the shaft body to hold the grip body. In the bobbin holder that presses the ring to project it in the diameter direction and presses the inner peripheral surface of the bobbin to grip the bobbin, insert the bobbin into the bobbin positioning collar formed on the shaft body. Occasionally, the bobbin ends contact with each other for temporary positioning, and a bobbin is mounted with a gap forming member that is movable in the longitudinal direction of the axis during the bobbin holding operation.

〔Example〕

The structure of one embodiment of a bobbin holder for carrying out the bobbin holding method of the present invention will be described with reference to the drawings.

Reference numeral 2 denotes a shaft body having a bobbin positioning flange 2a, a grip ring positioning flange 2b, and a compressed air supply hole 2c, which is rotatably attached to the machine frame 1 by a bearing 3. Reference numeral 4 denotes a piston fitted into the end portion of the shaft body 2, and is pressed by the compression spring 5 in the direction (a). Reference numerals 6 to 8 are slide rings fitted around the outer circumference of the shaft body 2, and 9 is a grip ring fitted between the piston 4, the slide rings 6 to 8 and the flange portion 2a of the shaft body 2. .

A compressed air supply pipe (not shown) having an electromagnetic switching valve is connected to the compressed air supply hole 2c of the shaft body 2 described above.

When holding the bobbin with the bobbin holder described above,
First, when an electromagnetic switching valve (not shown) is operated to switch the supply path to supply compressed air to the shaft body 2, the piston 4 moves in the (b) direction and acts on the gripping rings 9a to 9d. The pressing force of the spring 5 is removed, and the holding rings 9a to 9d are naturally returned to the state by the elastic force, and the outer diameter thereof becomes smaller than the inner diameter of the bobbin. In this state, the bobbins 20A and 20B are inserted until they come into contact with the bobbin positioning flange 2a. Next, when an electromagnetic switching valve (not shown) is operated to switch the supply path to stop the supply of compressed air and the pressing force on the piston 4 is eliminated, the pressing force of the compression spring 5 causes the piston 4 to move in the (a) direction. Moving. At this time, the pressing force of the compression spring 5 causes the piston 4, the grip ring 9a, the slide ring 6, the grip ring 9b,
Slide ring 7, grip ring 9c, slide ring 8,
The grip ring 9d is transmitted in this order, and is sequentially compressed by the pressing force from the grip ring 9a located on the tip side to project in the diametrical direction and press-contact the inner peripheral surface of the bobbin 20A. Therefore, when the grip ring 9a is moved in the longitudinal direction (a) of the axial center by the pressing force, the grip rings 9b to 9d are sequentially pressed and the bobbins 20A and 20B.
To hold. However, the bobbin 20A, 20B has a weaker gripping force on the gripping ring 9d side. So, the bobbin mentioned above
20 When the gripping operation is completed, an electromagnetic switching valve (not shown) is operated to switch the supply path and supply compressed air to the shaft body 2. Then,
As shown in FIG. 2, the piston 4 moves in the (b) direction and the pressing force of the compression spring 5 acting on each of the grip rings 9a to 9d is removed, and each of the grip rings 9a to 9d is elastically moved. While returning to the natural state, the grip rings 9a to 9d and the slide rings 6, 7 and 8 move in the (b) direction,
Each grip ring 9a-9d is smaller than the inner diameter of the bobbin. Therefore, the bobbin A and the bobbin B are also slightly moved in the (B) direction to form the gaps S-1 and S-2 (about 1 mm to 2 mm). When a gap is created by the operation, an electromagnetic switching valve (not shown) is operated to switch the supply path to stop the supply of compressed air again, the pressing force on the piston 4 is eliminated, and the piston 4 is pressed by the pressing force of the compression spring 5. B) Move in the direction. At this time,
The pressing force of the compression spring 5 is transmitted in the order of the piston 4, the grip ring 9a, the slide ring 6, the grip ring 9b, the slide ring 7, the grip ring 9c, the slide ring 8 and the grip ring 9d, and the grip ring 9a located on the tip side. Then, the bobbin 20A is sequentially compressed by a pressing force and protrudes in the diametrical direction to press the inner peripheral surface of the bobbin 20A. Therefore, when the grip ring 9a moves in the axial center longitudinal direction (a) by the pressing force, the bobbin 20A also moves in the same direction at the same time, and the grip rings 9b to 9d are sequentially pressed to move the bobbin 20B together with the grip ring. The bobbins 20A and 20B are gripped in a state where there is no gap in the bobbin.

A gap forming member as shown in FIGS. 3 to 6 is attached to the bobbin positioning flange portion 2a of the shaft body 2 to provide a gap between the bobbin positioning flange portion 2a and the end surface of the bobbin 20B. ,
When each bobbin is moved together with the grip ring during the bobbin grip operation, the gap S− generated in the bobbin grip operation described above is generated.
The bobbin can be gripped more reliably in combination with the first and S-2.

FIG. 3 shows a spring 10 mounted on the flange portion 2a of the shaft body 2 as a gap forming member.

In FIG. 4, a groove is formed on the peripheral surface of the shaft body 2 in the vicinity of the flange portion 2a, and an O-ring 11 made of synthetic resin or synthetic rubber is attached.

In FIG. 5, a screw hole is formed in the peripheral surface in the vicinity of the flange portion 2a of the shaft body 2, and the ball plunger 12 is screwed.

FIG. 6 shows that a slide ring 13 is movably fitted on the peripheral surface of the shaft body 2 in the vicinity of the flange portion 2b.
A spring 14 is attached between 2b.

The above-mentioned gap forming member moves the slide ring in the axial direction by the pressing force of the spring, causes the rigid grip ring to diametrically project to grip the bobbin, and connects the piston and each slide ring to the connecting member. It is also possible to mount them on the bobbin holder that releases the grip of the bobbin by transmitting the movement of the piston to each slide ring to reduce the grip ring in the axial direction by sequentially connecting.

[Effects of the Invention] According to the bobbin holding method of the present invention, the tubular body is inserted into the shaft body rotatably mounted on the machine frame as described in claim 1, and the holding ring is interposed between the tubular body and the shaft body. When holding a plurality of bobbins in a bobbin holder for holding the bobbin by pressing the inner peripheral surface of the bobbin by applying a pressing force to the grip ring to diametrically project the bobbin, a plurality of bobbins are The bobbin holder is inserted into the bobbin holder and a pressing force is applied to the grip ring to bring each bobbin into a temporary grip state, and the pressing force on the grip ring is removed at least once to temporarily release the grip of the bobbin, Next, since each bobbin is gripped by applying a pressing force to the grip ring, it is possible to move the bobbin together with the grip ring in the longitudinal direction of the axial center while gripping the bobbin with the grip ring. In this case, all the bobbins can be uniformly held by all the holding rings.

In addition, a plurality of bobbins are inserted into the bobbin holder so as to have a predetermined space with respect to the bobbin positioning flange formed on the shaft, and a pressing force is applied to the grip ring. So that each bobbin is in a state of temporary gripping,
In a state where the pressing force on the grip ring is removed at least once to temporarily release the grip of the bobbin, and then the pressing force is applied to the grip ring to bring each bobbin into contact with the bobbin positioning flange. If you try to hold it,
Since the bobbin synchronizes with the movement of the holding ring due to the gap at the time of inserting the bobbin and the gap generated at the time of the bobbin holding operation, all the bobbins can be held with a more uniform force.

Further, the bobbin holder of the present invention is inserted into a shaft body rotatably mounted on a machine frame as claimed in claim 3, and a grip ring is interposed between the cylinder body and the shaft body to hold the grip body. In the bobbin holder that presses the ring to project it in the diameter direction and presses the inner peripheral surface of the bobbin to grip the bobbin, insert the bobbin into the bobbin positioning collar formed on the shaft body. Occasionally, the bobbin end contacts the bobbin for temporary positioning, and when the bobbin is mounted with a gap forming member that can move in the longitudinal direction of the shaft during gripping operation, the bobbin positioning mechanism is installed close to the bobbin holder. The entire winder can be made compact as compared with the above-described winder, and the bobbin can be positioned and gripped reliably.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing one embodiment of the bobbin holder of the present invention. FIG. 2 is a schematic view showing a state in which the bobbin grip is released during the bobbin grip operation. 3 to 6 are schematic views showing an embodiment of the gap forming member. 1: Machine frame, 2: Shaft body, 4: Piston, 5: Compression spring, 6,7,8,13: Slide ring, 9: Holding ring, 10: Gap forming member, 11: O-ring, 12: Ball plunger , 14: Spring,

 ─────────────────────────────────────────────────── ─── Continuation of the front page Examiner Masato Matsunawa (56) References JP 62-196270 (JP, A)

Claims (3)

[Claims] 1. A diameter is obtained by inserting a cylinder into a shaft rotatably mounted on a machine frame, interposing a grip ring between the cylinder and the shaft, and applying a pressing force to the grip ring. When holding multiple bobbins in the bobbin holder that holds the bobbin by pressing the inner peripheral surface of the bobbin against the bobbin holder, press the bobbin into the bobbin holder and press it against the grip ring. To make each bobbin in a temporary gripping state, to release the pressing force on the gripping ring at least once to temporarily release the gripping of the bobbin, and then to apply a pressing force to the gripping ring. A bobbin holding method characterized in that the bobbin is held. 2. A plurality of bobbins are inserted into the bobbin holder so as to have a predetermined space with respect to a bobbin positioning flange portion formed on the shaft body, and a pressing force is applied to the grip ring to apply the pressing force to each of the bobbins. The bobbin is temporarily held, the pressing force on the holding ring is removed at least once to temporarily release the holding of the bobbin, and then the pressing force is applied to the holding ring to position each bobbin. 2. The bobbin holding method according to claim 1, wherein the bobbin holding method is carried out in a state where the bobbin is held in contact with the work collar. 3. A diameter is obtained by inserting a cylinder into a shaft rotatably mounted on a machine frame, interposing a grip ring between the cylinder and the shaft, and applying a pressing force to the grip ring. In the bobbin holder that bulges in the direction and presses the inner peripheral surface of the bobbin to grip the bobbin, the bobbin positioning flange formed on the shaft body is temporarily contacted with the bobbin end when the bobbin is inserted. A bobbin holder characterized in that a positioning is performed and a gap forming member is mounted on the bobbin so that the bobbin can move in a longitudinal direction of an axis during a gripping operation.