JP2009220969A - Winding core retaining device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding core retaining device can be miniaturized, and moreover, adjusting the limit of a stroke allowing a spindle to be advanced/retracted not depending on man power. <P>SOLUTION: This winding core retaining device 1 is provided with the spindle 4 with a front end 2 and a base end 3 apart in the axial direction of the winding core, which can be connecting the front end 2 to the winding core freely detachably, an advancing/retracting means 5 advancing/retracting the spindle 4 in the axial direction, a transmitting means 6 transmitting the rotational force to the spindle 4, and a stroke adjusting means 7 interposed between the spindle 4 and the advancing/retracting means 5 and displacing the spindle 4 in the axial direction relative to the advancing/retracting means 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a core holding device that detachably holds a core of a roll formed by, for example, a winder.

A winder having a pair of main shafts facing each other forms a roll by connecting the pair of main shafts to the ends on both sides of the core, and winding a film or the like with a core that rotates with the pair of main shafts. To do. In order to attach the winding shaft to the winder, as shown in FIG. 5A, the winding core O is inserted between the pair of main shafts 4, and the pair of main shafts 4 are advanced in a direction approaching each other. This is done by inserting the tip 2 into the end of the core O. An air chuck 30 is provided at the tip 2 of the main shaft 4. The air chuck 30 expands when compressed air is supplied through the inside of the main shaft 4 and fixes the main shaft 4 to the core O. Further, the winder cuts the compressed air from the air chuck 30 when the film or the like reaches the full winding, and retracts the pair of main shafts 4 in directions away from each other, thereby moving the main shaft 4 from the end of the core O. Let go.

The advancing / retreating operation of the main shaft 4 described above is realized by the conventional core holding device 101 shown in FIG. The winding machine includes two core holding devices 101 as a pair. One of the winding core holding devices 101 is shown in FIG. The core holding device 101 includes a feed screw 11 that is arranged in tandem with the main shaft 4.
0 is rotatably attached to the base end 3 of the main shaft 4 and is screwed onto the feed screw 110.
The piston rod 19 of the air cylinder 18 is connected. The air cylinder 18 is supported by the housing 80. The main shaft 4 engages with the rotary sleeve 9 supported by the housing 80 via the slide key 31 and is slidable in the axial direction indicated by the arrow S with respect to the rotary sleeve 9. The air cylinder 18 advances and retracts the main shaft 4 as follows.

That is, in a state where the nut 120 shown in FIG.
When the two core holding devices 101 push the piston rod 19 of each air cylinder 18 to the limit of its stroke, the distance between the pair of main shafts 4 is as large as the dimension S1 shown in FIG. become. Conversely, when the two core holding devices 101 pull back the piston rod 19 of each air cylinder 18 to the limit of its stroke, the distance between the pair of main shafts 4 is as shown in FIG.
) To the dimension S2 described in (1).

When the core O ′ having a shorter overall length than the dimension S2 is attached to the winder, the feed screw 1 shown in FIG.
10 is rotated so that the nut 120 is fed toward the rear end 111. When the two core holding devices 101 pull back the piston rods 19 of the respective air cylinders 18, the distance between the pair of main shafts 4 becomes smaller than the dimension S2 because the nut 120 is displaced as described above. Thus, the tip 2 of the main shaft 4 can be fitted into the end of the core O ′.
JP 2000-053283 A

In the conventional core holding device 101, the feed screw 110 is positioned at the base end 3 of the main shaft 4. This is to prevent the feed screw 110 from being eccentric with respect to the main shaft 4 when the feed screw 110 is rotated so that the output of the piston rod 19 of the air cylinder 18 is transmitted straight to the main shaft 4. However, since the feed screw 110 is vertically arranged on the spindle 4,
It is inevitable that the shape of the core holding device 101 is long in the axial direction.

The above problem is that the feed screw 1 tries to widen the range (adjustment allowance) in which the nut 120 can move.
The longer the overall length of 10, the more remarkable. In addition, the operation of rotating the feed screw 110 depends on manpower, and the operator who takes charge of this operation must approach the winder while paying close attention to the operation of the winder.

An object of the present invention is to provide a core holding device capable of realizing downsizing of the core holding device and further adjusting the limit of the stroke in which the main shaft can advance and retreat without manual intervention.

The core holding device according to the present invention includes a main shaft having a distal end and a base end that are separated in the axial direction of the core and removably connecting the distal end to the core, and advancing / retreating means for moving the main shaft back and forth in the axial direction. And a transmission means for transmitting a rotational force to the main shaft, and a stroke adjusting means interposed between the main shaft and the advance / retreat means for displacing the main shaft in the axial direction with respect to the advance / retreat means, The stroke adjusting means guides the slider with a slide rail parallel to the main shaft, and a nut is screwed to a feed screw which is parallel to the main shaft and advanced and retracted in the axial direction by the advance and retreat means, and the base end of the main shaft is The joint member and the nut that are rotatably connected are coupled to the slider, and the nut is fed in the axial direction in accordance with the rotation of the feed screw. Characterized in that to displace the.

Further, the slide rail has a rail that slidably engages the slider in the axial direction. Furthermore, the core holding device according to the present invention includes a drive source for rotating the feed screw.

According to the core holding device of the present invention, the advancement / retraction means advances / retreats the feed screw in the axial direction, so that the main shaft can be advanced / retreated together with the nut screwed to the feed screw and the slider guided by the slide rail. it can. In addition, since the joint member and the nut to which the base end of the main shaft is connected are connected to the slider, the slide rail has a structure in which the main shaft and the nut are moved in the axial direction while the advance / retreat means moves the feed screw in the axial direction. It is possible to suppress the swinging with respect to it.

In particular, when the slider is engaged with the rail of the slide rail, the slider is twisted about the slide rail due to a deviation such that the advancing / retreating means slightly tilts the direction in which the feed screw advances / retreats with respect to the main shaft. Even if such a moment occurs, the slider can be prevented from rotating around the slide rail. Thereby, the effect which suppresses the shake | fluctuation with a main axis | shaft and a nut can be achieved notably.

Furthermore, according to the core holding device according to the present invention, since the main shaft, the feed screw, and the slide rail are arranged in parallel with each other, there is no need to lengthen the axial dimension, and the core holding device is small. It is advantageous to make the total length of the feed screw and the feed screw long.

Furthermore, according to the core holding device according to the present invention, since the feed screw can be rotated by the drive source, it is possible to omit the miscellaneous work for rotating the feed screw and the personnel for that purpose. In addition, if the drive source can be started, stopped, and reversed by remote control, it is possible to eliminate the trouble of the operator approaching the winder.

In the following description, the same designations or symbols are used for the elements already described, and description or illustration thereof is omitted. As shown in FIGS. 1 and 2, the core holding device 1 includes a spindle 2 having a distal end 2 and a proximal end 3 that are separated in the axial direction of the core O, and the tip 2 can be detachably connected to the end of the core O. 4, advancing / retreating means 5 for moving the main shaft 4 in the axial direction, a transmission means 6 for transmitting a rotational force to the main shaft 4, and a main shaft 4 with respect to the advancing / retreating means 5 interposed between the main shaft 4 and the advancing / retreating means 5. Stroke adjusting means 7 for displacing in the axial direction.

The main shaft 4 is engaged with a rotating sleeve 9 supported by the housing 8 via a slide key, and is slidable in the axial direction with respect to the rotating sleeve 9. The rotary sleeve 9 is provided with a sprocket 10 protruding from the peripheral surface. The transmission means 6 transmits a rotational force of a motor or the like to the rotating sleeve 9 and the main shaft 4 via a chain wound around the sprocket 10. Alternatively, a gear may be formed on the peripheral surface of the rotating sleeve 9, and a pinion rotated by a motor or the like may be meshed with the gear.

The stroke adjusting means 7 includes an axially extending feed screw 11, a nut 12 screwed to the feed screw 11, a slide rail 13 parallel to the main shaft 4, a slider 14 guided by the slide rail 13, and the main shaft 4. A joint member 15 rotatably connected to the base end 3, a nut 12,
A slider 14 and a connecting member 16 that connects the joint member 15 are provided. Slide rail 1
3 has a rail 17 that slidably engages the slider 14 in the axial direction. The rail 17 restricts the slider 14 from rotating around the slide rail 13, but such an action makes the cross-sectional shape of the rail 17 a polygonal shape, or the two slide rails 13 parallel to each other cause the slider to move. It can also be achieved by guiding 14.

The advancing / retracting means 5 is obtained by attaching a joint member 21 inserted into the guide sleeve 20 to the piston rod 19 of the air cylinder 18. Air cylinder 18 and guide sleeve 20
Are respectively supported by the housing 8. As shown in FIG. 3, the joint member 21 includes a bearing 22 for receiving an axial load of the feed screw 11 on the inner slider 14 guided in the axial direction by the guide sleeve 20. A bearing 22 is used. As shown in FIGS. 2 and 4, the joint member 15 of the stroke adjusting means 7 is attached to a casing 24 attached to the lower end of the connecting member 16 so as to be rotatable around a pin 23 extending in the horizontal direction.
A bearing 25 for receiving the axial load of the main shaft 4 is housed, and the base end 3 of the main shaft 4 is supported by the bearing 25.

Reference numerals 26 and 27 in FIG. 1 indicate stoppers that define a range in which the nut 12 can be displaced along the feed screw 11. Reference numeral 28 indicates a clamp capable of positioning the nut 12 at an appropriate position of the feed screw 11. Alternatively, a hand-turning knob 29 may be provided at the other end of the feed screw 11, and the feed screw 11 may be rotated by grasping the knob 29 by an operator.

According to the core holding device 1 described above, in the step of fitting the tip 2 of the main shaft 4 into the end of the core O or detaching the tip 2 of the main shaft 4 from the core O, the advancing / retreating means 5 includes: The feed screw 11 is moved back and forth in the axial direction in accordance with the operation of the piston rod 19 of the air cylinder 18. Thereby, the main shaft 4 advances and retreats together with the nut 12 and the slider 14. Further, since the nut 12 and the joint member 15 are connected to the slider 14 via the connecting member 16, the slide rail 13 is connected to the main shaft 4 and the nut 12 in the process in which the feed screw 11 advances and retreats as described above. It can suppress that it shakes with respect to an axial direction.

In addition, since the slider 14 is engaged with the rail 17 of the slide rail 13, the slider 14 is caused by a deviation such that the direction in which the advance / retreat means 5 advances and retracts the feed screw 11 is slightly inclined with respect to the main shaft 4. Even if a moment that twists around the slide rail 13 is generated, the slider 14 can be restricted from rotating around the slide rail 13. Thereby, it can suppress effectively that the main axis | shaft 4 and the nut 12 shake | fluctuate with respect to an axial direction.

Furthermore, since the main shaft 4, the feed screw, and the slide rail 13 are arranged in parallel with each other, it is advantageous for downsizing the core holding device 1 and for setting the overall length of the feed screw 11 longer. Furthermore,
A pinion attached to the output shaft of the drive source M such as a motor may be meshed with a gear instead of the knob 29 shown in FIG. In this case, since the feed screw 11 can be rotated by the drive source M, it is possible to omit an operation in which the operator manually rotates the feed screw 11 to displace the nut 12. Further, if the drive source M can be started, stopped, and reversed by remote control, an advantage that the operator does not have to approach the winder can be obtained.

It should be noted that the present invention can be implemented in variously modified, modified, or modified forms based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

The core holding device according to the present invention is not limited to an application in which the core is detachably attached to the winder, and can be applied to any transport device such as an unmanned transport vehicle or a stacker crane.

The side view which fractured | ruptured the principal part of the core holding | maintenance apparatus which concerns on embodiment of this invention. XX sectional drawing of FIG. Sectional drawing which shows an example of the coupling member applied to the core holding | maintenance apparatus which concerns on embodiment of this invention. Sectional drawing which shows the other examples of the coupling member applied to the core holding | maintenance apparatus which concerns on embodiment of this invention. (A) is a side view which shows the operation | movement in which the core holding device of a prior art example hold | maintains a core, (b) is a side view which shows the other example of the operation | movement. The side view which fractured | ruptured the principal part of the core holding device of a prior art example.

Explanation of symbols

1: core holding device 2: tip 3: base end 4: spindle 5: advance / retreat means 6: transmission means 7: stroke adjustment means 11: feed screw 12: nut 13: slide rail 14: slider 15: joint member 17: rail M: drive source O: winding core

Claims (3)

A main shaft having a distal end and a base end separated in the axial direction of the winding core, and removably connecting the distal end to the winding core; advancing / retracting means for moving the main shaft in the axial direction; and a rotational force transmitted to the main shaft. A core holding device comprising: a transmission means; and a stroke adjusting means interposed between the main shaft and the advance / retreat means to displace the main shaft in an axial direction with respect to the advance / retreat means,
The stroke adjusting means guides the slider with a slide rail parallel to the main shaft,
A nut is screwed into a feed screw that is parallel to the main shaft and advanced / retreated in the axial direction by the advance / retreat means,
A joint member rotatably connected to the base end of the main shaft, and the nut are coupled to the slider, and the nut is fed in the axial direction according to the rotation of the feed screw, whereby the slider and the joint A core holding device that displaces the main shaft together with a member. The core holding device according to claim 1, wherein the slide rail has a rail that slidably engages the slider in an axial direction. The core holding device according to claim 1, further comprising a drive source that rotates the feed screw.

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