JPS6326052B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winding device for pulling wallpaper, etc. from a large roll to a required length and winding it up. The present invention relates to a winding device provided with a supply/exhaust means that can be switched between a state in which air is exhausted from a central ventilation passage of the mandrel and a state in which air is supplied to the central ventilation passage.

The winding device described above exhausts air from the central air passage of the mandrel at the start of winding, so that the strip to be wound is brought into close contact with the surface of the mandrel and the winding action is performed reliably without causing slips. Furthermore, by supplying air to the central air passage of the mandrel when pulling out the wound strip roll from the mandrel, the strip roll can be pulled out smoothly with less resistance. However, in conventional winding devices of this type, as described in Japanese Patent Application Laid-Open No. 53-34061, a dedicated machine such as an air compressor is used as an exhaust means in addition to a pressure air source as an air supply means. was used. That is, since an air supply means and an exhaust means, both of which require a driving motor, were used in combination, the equipment cost was high.

The present invention proposes a winding device that can solve these conventional problems.

One embodiment will be described below based on the attached illustrative drawings. In FIGS. 1 and 2, reference numeral 1 denotes a winding rotation center shaft supported horizontally by a bearing 2 at one end, and an end protruding from the bearing 2. A passive pulley 3 is attached to the drive motor 4, and a belt 6 is stretched between it and the transmission pulley 5 of the drive motor 4.
Reference numeral 7 denotes a cart that is located below the mandrel 1 and is movable in the axial direction of the mandrel 1, and has a pair of left and right guide rails 8.
rollers 9 that sandwich the above and below, and the guide rail 8
It is provided with steady rest rollers 10 that come into contact with the inner surface of the cylinder at both ends in the direction of movement and at an intermediate position, and is caused to reciprocate by a cylinder unit 11. FIG. 1 shows a state in which the truck 7 is at the backward limit position. 1
Reference numerals 2 and 13 indicate positioning devices for the band to be wound up that are slidably fitted loosely onto the core shaft 1, and a pair of left and right guide rods 14 and 15 are provided on both front and rear ends of the truck 7, respectively.
It is attached via vertical plates 18 and 19 to movable stands 16 and 17 which are supported so as to be slidable in the axial direction of the mandrel 1 via vertical plates 18 and 19.

As shown in FIG. 3, the movable base 16 that supports the positioning tool 12 on the base side of the mandrel 1 is provided with a pair of front and rear sliders 20 and 21 at its lower part, which are slidably and loosely fitted into the guide rod 14.
A piston rod of a cylinder unit 23 attached to a support member 22 supporting one end of the cylinder unit 23 is connected to the one slider 21 via a floating joint 24.

A movable base 17 that supports the other positioning tool 12
As shown in FIG. 4, a pair of front and rear sliders 2 are slidably fitted into the guide rod 15.
5 and 26 at the bottom, and a piston rod is connected to one slider 26 via a floating joint 27.
It is attached to another slider 29 which is slidably fitted into the guide rod 15. This slider 29 can be fixed at any position with a fixing screw 31 provided with a handle 30.

In FIG. 2, reference numeral 32 denotes support means for rotatably supporting the roll 33 of the strip to be wound;
It is composed of a plurality of rollers 34 arranged and supported in a letter or V shape. 35 is a guide rail for guiding the cutter, 36 is a belt running length measuring device, 3
7 is a strip guide roller. Further, in FIG. 1, reference numeral 38 denotes a positioning device for the roll 33, which is attached to the inner end of a screw shaft 39 with a handle.

In the winding device as described above, according to the present invention, the mandrel 1 is made of a pipe material whose free end portion 1a side is sealed, and the minimum width band-like body winding region of the mandrel 1 is provided with a As shown in Fig. 5, an appropriate number of intake and exhaust ports 42 are provided at an appropriate pitch on the peripheral wall.
Furthermore, as shown in FIG. 1, an air pipe 45 is connected to the shaft center of a cap 43 attached to the driven pulley 3 attached to one end of the mandrel shaft 1 via a universal fluid coupling 44, as shown in FIG. As shown in the flow path 46, 4
The pressurized air source 50 and the intake port 52 of the ventilate pump 51 can be selectively connected to each other via a switching valve 49 having valves 7 and 48. That is, the switching valve 49 includes a spring (not shown) that maintains it in the neutral position shown in FIG. 5, a first solenoid 49a that switches it to the first switching position shown in FIG.
and a second solenoid 49b that switches to the second switching position shown in FIG. 7, and when in the neutral position shown in FIG. The air pipe 45 is cut off from the pressure air supply pipe 56 and is directly opened to the atmosphere via the flow path 48 of the switching valve 49 .
7 and an air pipe 53 connected to the intake port 52 of the ventilate pump 51, which is indirectly open to the atmosphere. When the first solenoid 49a is excited and the switching valve 49 is switched to the first switching position shown in FIG.
and a pipe 56 for supplying pressurized air to the ventilate pump 51 are connected by a flow path 47 of a switching valve 49, and the air pipes 45 and 53 are connected by a flow path 46 of the switching valve 49. Therefore, since the ventilator pump 51 is operated by the pressure air from the pressure air source 50 and an intake force is generated at the intake port 52, the air in the central ventilation passage 54 of the mandrel 1 is transferred to the air piping 45 and the flow passage 46. , and air piping 53
It is sucked and discharged through. Also, the second solenoid 4
9b is energized to switch the switching valve 49 to the second switching position shown in FIG. , the pressurized air from the pressurized air source 50 is supplied to the central ventilation passage 54 of the mandrel 1 through the air piping 55, the flow path 48, and the air piping 45.

Next, to explain how to use it, the positioning tool 38 shown in FIG.
is moved by rotating the screw shaft 39, and the roll 33 is set so that it does not move in the axial direction. Next, the strip 40 is pulled out from the roll 33 and guided by the strip guide roller 37 as shown by the imaginary line in FIG.
Drop between 13. Note that the length measuring device 36 is brought into elastic contact with the roller strip 40 of the length measuring device 36. Also, loosen the fixing screw 31 of the slider 29 and slide the movable base 17 along the guide rod 15.
After moving the positioning tool 13 to a position corresponding to the width of the strip 40, the slider 2 is fixed with the fixing screw 31.
Lock 9. In this way, the pair of positioning tools 12 and 13 are brought close to both sides of the width direction of the strip 40, but in this state, both cylinder units 2
The piston rods 3 and 28 are at the retraction limit position.

Next, if the switching valve 49 is operated to exhaust air from the central air passage 54 of the mandrel 1, an intake port will be created at the intake/exhaust port 42 of the mandrel 1, so as shown in FIG. When the portion 40a is wrapped around the mandrel 1 by a certain amount, the end portion 40a of the band-like body is attracted to the surface of the mandrel 1. By operating the motor 4 in this state and rotating the mandrel 1 in a predetermined direction, the strip 40 is reliably wound around the mandrel 1 without slipping between it and the mandrel 1.

Incidentally, if the pull-out resistance of the strip 40 is sufficiently small, by rotating the mandrel 1 in such a state that the end 40a of the strip 40 abuts against the side of the mandrel 1 and hangs down, the intake/exhaust port 42 can be actuated. It is also possible to automatically wrap the strip end portion 40a around the mandrel 1 using the suction force. In addition, even if the end portion 40a of the strip-like body is lightly touched against the mandrel shaft 1 by hand while the mandrel 1 is being rotated first, the end portion 40a of the strip-like member can be moved by the suction force acting on the intake/exhaust port 42. will be wound around the core shaft 1 while being attracted to it.

On the other hand, by repeatedly moving the pair of positioning tools 12 and 13 back and forth at a constant amplitude on the rotating mandrel 1 via both movable bases 16 and 17, the cylinder units 23 and 28 are wound around the mandrel 1. When the strip 40 to be removed moves in the axial direction and attempts to take on the shape of a bamboo shoot, both axial ends of the strip roll 41 on the mandrel are intermittently struck with the positioning tools 12 and 13. The upper strip roll 41 does not deform into a bamboo shoot shape.

Since the length of the strip 40 wound around the mandrel 1 is measured by the length measuring device 36, when the winding length set in advance on the setting device and the measured value from the length measuring device 36 match The motor 4 is automatically stopped and the cutter (not shown) is automatically moved along the guide rail 35 to cut the strip 40. Also, when the mandrel 1 starts winding, it is driven at low speed for a certain period of time, after which it is switched to high speed driving, and after the difference between the set value (winding length) and the measured speed value reaches a certain value, the mandrel 1 is driven at low speed for a certain period of time when winding starts. can be controlled to switch back to low speed drive.

Once the strip 40 is cut, the strip roll 41 on the mandrel 1 is manually rotated to completely wind up the free end of the strip. The belt-shaped body roll 41 between the positioning tools 12 and 13 moves integrally with the trolley 7 by moving forward by the roller 8.
is pressed in the axial direction by the positioning tool 12,
When the switching valve 49 supplies pressurized air to the central ventilation passage 54 of the mandrel 1 prior to this extraction, the pressurized air is ejected from the intake/exhaust port 42 and contacts the circumferential surface of the mandrel 1. Since an air layer is forcibly formed between the belt-shaped body 40 of the first layer and the belt-shaped body roll 41, the resistance to extracting the belt-shaped body roll 41 from the core shaft 1 is extremely reduced. It is extracted from the mandrel 1. still,
A receiver can be provided to receive the strip roll 41 that is pulled out from the core shaft 1 and falls from between the positioning tools 12 and 13. This receiver has a positioning tool 1.
It is only necessary to provide a slit through which the vertical plate 19 supporting 3 can pass. Furthermore, the cylinder units 23 and 28 that repeatedly move the positioning tools 12 and 13 are also equipped with fluid flow path switching control means that automatically repeatedly moves the piston rod back and forth. It is desirable to configure the system so that it stops only when it returns to normal.

The winding device of the present invention can be implemented as described above, and since the strip is attracted to the mandrel by suction force and the slip resistance between the two is sufficiently increased, it is possible to start winding the strip. There is no longer any need to perform preparatory work in which the band is tightly tightened around the mandrel and wrapped multiple times, and even if the end of the band is lightly wrapped around the mandrel by a small amount, it will not slip between the mandrel and the mandrel. This makes it possible to reliably wind up the strip without causing any problems. In some cases, it is also possible to completely omit the work of pre-winding the end of the strip around the mandrel as described above. Moreover, when the wound strip roll is removed from the mandrel, a pressure air layer is formed between the mandrel and the first layer of the belt by forced exhaust from the intake and exhaust ports, and the strip roll is removed from the mandrel. Since the strip roll can be placed in a floating state, it is possible to extremely reduce the sliding resistance of the strip roll against the mandrel, which is completely opposite to when winding it, and it is possible to smoothly pull out the strip roll from the mandrel with a small force. However, the greatest effect of the present invention is as follows.

That is, in the winding device of the present invention, the supply/exhaust means that can be switched between exhausting air from the central air passage of the winding shaft and supplying air to the central air passage is a pressurized air source, a ventilate pump, and a switching valve, the switching valve being in a state in which the central ventilation passage of the mandrel and the pressurized air source are connected;
It is configured to be switchable between a state in which the pressurized air source and the ventilate pump are connected, and a central air passage of the mandrel and the intake port of the ventilic pump are connected. Therefore, the only power device that requires a drive motor is the pressurized air source, eliminating the need for conventional motor-driven exhaust means and making it possible to implement the system at a very low cost. Moreover, functionally, by switching the switching valve, air can be reliably supplied to and exhausted from the mandrel, thereby achieving the intended purpose.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall front view, Fig. 2 is a partially cutaway side view, and Figs. The cross-sectional plan views and FIGS. 5 to 7 are explanatory diagrams of the air circuit. 1... Strip winding shaft, 7... Cart, 8
... Guide rail, 9, 10 ... Roller, 11
...Bogie drive cylinder unit, 12, 13
...Positioning tool, 14,15...Guide rod,
16, 17...Movable stand, 20, 21, 25, 2
6, 29...Slider, 23, 28...Cylinder unit for repeated reciprocating of positioning tool, 24,
27... Floating joint, 31... Screw for fixing the slider 29, 40... Band-shaped body, 4
2...Intake/exhaust port, 49...Switching valve, 50...Pressure air source, 51...Venture pump, 52...
...Intake port, 54...Central air passage of the axle.

Claims (1)

[Claims] 1. A suitable number of intake and exhaust ports are provided on the peripheral wall of a winding shaft made of pipe material, and an air supply/exhaust means is provided that can be switched between exhausting air from the central ventilation path of the shaft and supplying air to the central ventilation path. In the provided winding device, the supply/exhaust means is composed of a pressure air source, a ventilate pump, and a switching valve, and the switching valve is configured such that the central ventilation passage of the mandrel is connected to the pressure air source. and a state in which the pressurized air source and the ventilary pump are connected, and a central air passage of the mandrel and the intake port of the ventilary pump are connected.