JPH0295642A - Center shaftless take-up machine - Google Patents

Abstract

PURPOSE:To aim at improving the accuracy of stoppage and the degree of parallelization as well as reducing the space in the width direction by using turning base bearings, providing both turrets with turret positioning pins and disposing driving gears at the intermediate parts of power transmitting shafts with deflectable couplings. CONSTITUTION:The pins 9, 19 of turret positioning devices 6, 16 come off by turret turn signals, and a motor 22 is driven to rotate turrets 1, 11 by a fixed angle through power transmitting shafts 5, 15 and gears 4, 14. As the driving motor 22 is positioned at the center in the width direction at this time, the power transmitting shafts 5, 15 are twisted approximately in equality, so that cores 23, 24 can maintain parallelism even during turning motion. Moreover, the shafts 5, 15 have built-in torque limiters 25-28 so as to absorb the impact force generated by the possible deviation of entering timing of the pins 9, 19. With this structure, the space in the width direction is reduced as well as stop accuracy and the degree of parallelization can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a center shaftless winding machine that can be used as a turret-type winding machine for winding films, paper, cloth, and the like.

(Prior Art) As a conventional example of a center shaftless winder for a belt-like material such as a film, a mechanism for winding printing paper onto a roll is shown in Figs. 2 to 4.
The diagram will be explained. In the figure, turret rewinding machine 1
10 generally includes side frame members 111,112.

The side frame members 111112 each rotatably support a pair of turrets 37 and 39. Turret 3
7 rotatably supports a pair of shafts 4L and 41' at both ends of its diameter. The mandrel 4L 41' is adapted to receive one end of each shaft or barb 42 on which the coat is supported and around which the coat is wound. The other end of the shaft 42 is connected to the turrets 1 to 39 by an appropriate method.
It is rotatably mounted on and can be latched. The shaft, of course, rotates to wind the printing paper when the axle to which it is attached rotates.

As shown in FIG. 2, a sheet of paper is being wound onto a shaft 42 supported by mandrel 41, and mandrel 41 has been deployed in a working position generally indicated at 1. Mandrel 4
1' is placed in the ready position (2) with other shafts attached to it. The turrets 37, 39 are also rotated to direct the new core carried on the mandrel 41' to an acceleration location where the new core is accelerated to a speed that substantially matches the speed of the stock paper. Meanwhile, the knife assembly 43 (
3) has been moved to the position shown so that the rollers 45 are in contact with the stock paper and press it down into position regardless of the diameter of the roll being rewound. The new core is then moved to a transfer location by the rotation of the tarleft, where it receives the raw material paper in a winding manner. The new core is affixed with a suitable adhesive, such as adhesive tape, which grips or glues the stock paper when it engages with it.

The cutting knife 100a' of the cutting knife assembly 43 is then operated to cut the stock paper, and the cut ends are then wound onto a new glued core.

The turrets 37, 39 rotate again until they reach the unloading station at the discharge end of the turret rewinder where the completed roll 33 is unloaded by the operator. Turret 1-3
7.39 rotates further to deposit the completed roll on the floor and move the empty mandrel 41 to the loading location. A new coat, suitably attached to another shaft 42, is loaded into the turret rewinder 110 at the loading station. Once the new core has been properly loaded, the turret 37.39 is rotated again until the new core is guided to the preparation location ■ to await the next transfer action, and the core being wound by the mandrel 41' You will be guided to the winding place.

Considering the turret rewinder in more detail with reference to FIG. 4, the turret 39 is suitably mounted by bolts 47 to a central hub 49a of a large diameter gear 49, which hub is mounted on a ball bearing assembly mounted on the frame member 25. 50 is rotatably supported. The turret 37 on the gear side of the turret rewinding machine 110 is attached to the frame member 1 by a ring-shaped bushing 51.
11, whose bush engages the smooth cylindrical inboard portion 37a of the turret 37.

The turrets 37, 39 are driven synchronously by a motor 55 (FIG. 2) located on the gear side of the turret rewinder 110. The motor 55 has gears 61, 63 mounted on a shaft 59 with spaced gears 61, 63 by a chino sprocket drive generally indicated at 57. The gear 63 engages with a large diameter gear 49 rotatably supported by the frame member 25, while the gear 61 engages with teeth 37b formed on the outer periphery of the turret 37.

The turret 37 is tightly supported in the frame 111 by a shaft 65 that extends between the turret 37 and a generally Y-shaped outboard support bracket 67 that is bolted to the base plate. It is fixed and connected to the frame member 111 by a bolt 69 inserted into the sleeve 71. The inboard portion of the shaft 65 is supported within an axial bore 37c formed in the central hub 37d of the turret 37;
The outboard portion of 5 is rotatably supported by a ball bearing assembly 73 in the center of a Y-shaped bracket 67.

Both ends of the shaft 65 are threaded such that a NAND 7475 is threaded to retain the shaft 65 in a ball bearing in the center hub 37d of the turret 37 and the outboard support bracket 67. This structure provides stability to the turret 37 and prevents turret axial play.

All mechanisms 77 and 77' are respectively attached to the turret 39 at positions diametrically opposed to it and equidistant from its axis, and a shaft 42 on which the coat is attached.
Rotatably supports and holds one end of the The hook mechanism 77, 77' supports one end of the shaft 42 so as to rotate about its axis, and also supports the shaft 42 at one end so as to rotate about the axis thereof.
9 may be of a conventional structure in which the shaft 42 is hooked so that they rotate together. Therefore, the whole mechanism 7
7, 77' are shown schematically. First and second axles 41 and 41' are located at corresponding positions of the turret 37, that is, positions corresponding to the positions of the locking mechanisms 77 and 77', for receiving the other ends of the shafts 42, and the coated shafts 41 and 41' are arranged to receive the other end of the shaft 42. is installed.

The mandrel 41 is a turret, a Bohr 80 formed in a 7-tooth 37.
It is rotatably supported therein by inboard and outboard ball bearing assemblies 83,85. The mandrel 41 has a sprocket 87 at its outboard end and is rotationally driven thereby. Mandrel 41' is identical to mandrel 41 except for alignment of sprocket 87 for drive purposes, and is mounted to turret 37 in the same manner as mandrel 41, as will become apparent from the description below. Corresponding reference numbers given at the beginning are therefore given to equivalent parts connected to the axle 41, 41'.

The mandrels 41, 41' are each driven by a rewind motor 89, 89' fixed to the base plate. There are two concentric and relatively rotating sleeve assemblies 97,97' mounted on the turret shaft 65 between the frame member 23 and the outboard bracket 67, each axially spaced apart. and has sprockets 93, 95 and 93', 95' respectively attached thereto. Rewind motor 89 drives first mandrel 41 by a chino sprocket drive, generally designated 91, which chino sprocket drive drives a pair of axially spaced sprockets 93.95. while the second rewind motor 89' drives the second mandrel 41' by means of another chino sprocket drive indicated generally at 91', the drive 91' being axially spaced apart. It includes another pair of sprockets 93' and 95'.

The cutting knife assembly 43 is located at the press end of the turret rewinder 110 and serves to cut the printing paper during transfer from one coat to another, as described above. Knife assembly 43 includes a pair of brackets 92.93 extending through frame member 23.25 and having a shaft 96 rotatably attached thereto.
is fixed to. On the gear side of the turret rewinder 110, one end of a crank arm 97a (FIG. 1) is fixed to the shaft 96, and the other opposite end 91b is attached to a piston rod 99 of an air cylinder 99 operated by a solenoid.
It is pivotably connected to a. Air cylinder 99 is pivotally connected to the base plate and serves to pivot the knife assembly about shaft 96.

Extending between brackets 92 and 93 of knife assembly 43 is a roller 45 which engages the print sheet and holds it in a predetermined position when the knife assembly is pivoted by operation of cylinder 99, as will be described below. Move to a transient position.

Normally, the knife assembly 43 is in a retracted position, out of the way so as not to interfere with other operations of the rewinder. Knife assembly 43 is moved by cylinder 99 from the retracted position to the transition position shown in FIG. roller 45
The amount of travel is the same for all completed rolls of diameter so that the paper is always in the same position for the transition to the new core. Also extending adjacent knife roller 45 between brackets 92,93 is cutting knife assembly 10.
There is 0. The cutting knife assembly 100 has a support 100 thereof.
It includes a knife blade 100a that is movable relative to b. Knife blade 1 to guide the movement of the knife blade.
A suitable guide mechanism is coupled to 00a. knife blade 1
00a is moved by a cylinder 1000 with a suitably mounted piston rod.

Cylinder 1000 is automatically operated at the appropriate time in response to operation of a solenoid.

A paper guide roll 45a is also coupled to the knife assembly 43. The paper guide roll 45a is rotatably supported by a shaft 96. When the printing paper enters the rewinding machine, it is dragged under the roll 45a and guided into the rewinding machine. As is clear from the figure, the roll 45 is a roll 45a.
located further downstream. Furthermore, the knife 100a is arranged downstream of the roll 45 and, when operated, immediately closes the roll 45, but within the range between the roll 45 and the coat in the work station 1 where the paper is currently being wound. Cut the paper.

(Problems to be Solved by the Invention) The conventional center shaftless winding machine has a support bearing 5.
Since the 0.51 and gear 39.37b are separate parts, it is necessary to provide a wide space in the width direction, and since the turrets 37.39 on both sides are stopped by motor brakes, the brake operation time is shortened. Variation, chain 57
Due to the backlash of the gear 61.degree. 37b, there were problems such as poor reproducibility of the stop position.

In addition, since the turret drive motor 55 is not located at the center in the width direction, there is a risk that the parallelism of the winding core in the turret will be distorted due to the effect of twisting of the turret drive gear coupling shaft 59. When installed on the turret, it is very difficult to determine the timing to stop the turret drive motor, and if the stop signal is delayed,
There was a risk of damage to the drive shaft or drive gear due to excessive torque.

The present invention has been proposed to solve the above-mentioned conventional problems.

(Means for Solving the Problems) Therefore, the present invention provides a pair of left and right turrets that hold a winding core, a swivel bearing that rotatably supports each turret on a frame, and an outer ring of the bearing that is attached to each of the turrets. A pair of left and right gears mesh with the teeth formed on the outer ring, and a pair of left and right gears mesh with each of the retraction gears, and the drive shaft is arranged approximately in the middle of the power transmission shaft that connects the pair of gears, and drives the transmission shaft to rotate. Means for solving the problem is provided with a configuration comprising a drive device that can move forward and backward, a turret positioning device that can insert and remove each pin into a direction formed in each of the turrets, respectively. That is.

(Function) The pin of the turret positioning device is pulled out of the turret by the signal of the turret rotation, and the drive unit is driven by the detection signal that the pin has been pulled out, and the gear and teeth are rotated by driving the power transmission shaft. The turret is rotated by a set angle via the outer ring of the swivel bearing. When the turret is rotated through a set angle, a pin is inserted into a hole in the turret and the turret is fixed.

(Example) The present invention will be described below with reference to the embodiments shown in the drawings. Fig. 1 shows an embodiment of the present invention, in which 1 and 11 are turrets, and a plurality of core holders 7, 8, 17° 18 are connected to each other. Winding cores 23° and 24 are held at symmetrical positions with respect to the center of rotation. The winding cores 23 and 24 are driven by a motor (not shown) of a drive mechanism similar to that of the conventional example described above, and a strip-like material such as a film or paper is wound thereon.

3.13 is a swivel bearing, the inner ring is fixed to the frames 2, 12, and the outer ring is connected to the turret 1.11.

In addition, teeth 3a and 13a are machined on the outer ring, and gear 4
, 14, and rotates as the gear 4.14 rotates to rotate the turrets 1, 11.

5.15 is a power transmission shaft that transmits the torque of the motor 22 to the gear 4.14 via the reducer 21. Also, the axis 5°1
Couplings 25, 26, 27, and 28 connected to 5 have built-in elastic bodies or torque limiters to absorb impact forces.

6.16 is the turret positioning device, frame 2.1
At the fixed position of the turrets 1 and 11, the pins 9 and 19 are pushed into the large areas machined on the turrets 1 and 11 using air cylinders 6a and 16a, and the turrets 1 and 11 are fixed to each other.
- This is for positioning Lll. The reducer 21 is
The rotation of the motor 22 is decelerated and transmitted to the gear 4.14 via the power transmission shaft 5.15.

Next, to explain the action, the turret rotation signal causes
The pins 9.19 of the turret positioning devices 6, 16 are removed. A signal from the pins 9 and 19 coming off (detected by a limit switch (not shown)) energizes the motor 22, causing it to rotate, reducing the speed reducer 21, the power transmission shafts 5 and 15,
The turrets 1 and 11 are rotated by a set angle via the gears 4 and 14. At this time, the turret drive motor 22
is located almost at the center in the rlJ direction, so the power transmission shaft 5.1
5 is twisted almost evenly, and the winding cores 23 and 24 do not lose their parallelism even while the turret is rotating. When the turret 1.11 is rotated through the set angle, the pin 9.19 enters and the turret 1.11 is fixed. The power transmission shafts 5 and 15 have built-in elastic bodies (or torque limiters), and even if the timing at which the pin 9° 19 enters and the timing at which the motor 22 turns off are out of alignment, the impact force can be absorbed.

(Effects of the Invention) The present invention is configured as described above in detail, and by using the swivel table bearing, the space in the film direction of the machine can be reduced. Furthermore, by providing turret positioning pins on both turrets, the turrets can be stopped with high precision, and deviations in parallelism can be eliminated. Furthermore, since the turret drive device is disposed in the middle of the power transmission shaft, that is, in the middle of both turrets, it is possible to eliminate deviations in the parallelism of the winding cores in the turret due to twisting of the power transmission shaft.

In addition, if a flexible coupling or a torque limiter is provided on the turret drive shaft, it is possible to absorb excessive torque due to the time delay until the turret drive motor stops after the turret positioning pin is activated.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view of a center shaftless winding machine showing an embodiment of the present invention, Fig. 2 is a perspective view of a conventional center shaftless winding machine, and Fig. 3 is a cross section taken along line A-A in Fig. 2. 4 are sectional views taken along line B-B in FIG. 2. Explanation of the main parts of the figure 1.11... Turret 2, 12... Frame 3.13... Swivel base bearing 3a, 13a - Teeth 4... Gear 5.15... Power transmission shaft 6
．． 16- Turret positioning device 7.8, 17.18--Core holder 9.19...-Pin 21--Reducer 2
2-Motor 23.24-Win core 25.26
．． 27.28- Kampling Figure 4

Claims (1)

[Claims] A pair of left and right turrets that hold the winding core, a swivel base bearing that rotatably supports each turret on a frame, an outer ring of the bearing is connected to each turret, and teeth formed on the outer ring, A pair of left and right gears that mesh with each other, a drive device that is arranged approximately in the middle of a power transmission shaft that connects the pair of gears and rotationally drives the transmission shaft, and a pin that can move forward and backward, respectively, each of the above A center shaftless winding machine comprising a turret positioning device capable of inserting and removing pins into holes formed in the turret.