JP2544458B2 - Center shaftless winder - Google Patents

Description

TECHNICAL FIELD The present invention relates to a center shaftless winder that can be used as a turret type winder for winding films, papers, cloths and the like.

(Prior Art) As a conventional example of a center shaftless winder for a belt-shaped material such as a film, a mechanism for winding printing paper on a roll will be described with reference to FIGS. 2 to 4. In the figure turret rewinder
110 generally includes side frame members 111, 112. The side frame members 111 and 112 rotatably support a pair of turrets 37 and 39, respectively. The turret 37 rotatably supports a pair of mandrels 41, 41 'at both ends of its diameter.
The mandrels 41, 41 'are adapted to carry the core and to receive one end of each shaft or rod 42 around which the core is wound. The other end of the shaft 42 is rotatably attached to the turret 39 in a suitable manner and is latched. The shaft, of course, rotates like a print sheet as the mandrel to which it is attached rotates.

As shown in FIG. 2, the sheet is being wound on a shaft 42 supported by a mandrel 41, and the mandrel 41 is generally located in the working position indicated by 1. The mandrel 41 'is placed in the ready position IV along with the other shafts attached to it. Also, the turrets 37 and 39 are rotated so as to guide the new core supported by the mandrel 41 ′ to the acceleration place,
The new core is then accelerated to a speed that is substantially in balance with the speed of the raw paper. Meanwhile, the knife assembly 43 (Fig. 3) has been moved to the position shown, whereby the roller 45
Contacts the raw paper and pushes it down into place regardless of the diameter of the roll being rewound. The new core is then moved to the transfer location by the rotation of the turret, where it receives the raw paper as if it were wound. A suitable adhesive material such as an adhesive tape is attached to the new core, and when the raw paper is engaged with it, the raw paper is gripped or glued. Cutting knife assembly
The cutting knife 100a 'of 43 is then operated to cut off the raw paper, and then the cut off tip is wound on a new coat with glue.

The finished roll 33 on the turrets 37, 39 is rotated again until it reaches the removal location at the discharge end of the turret rewinder which is removed by the driver. Turrets 37 and 39 rotate further, depositing the completed roll on the floor and empty mandrel 41
To the loading place. Another shaft at the loading location
A new core, suitably attached to 42, is loaded into the turret rewinder 110. Once the new core is properly loaded, the turrets 37, 39 are re-rotated and the mandrel is rotated until the new core is brought to the preparation site IV to await the next transfer action.
The core wound by 41 'is led to the final winding position.

Considering the turret rewinder in more detail with respect to FIG. 4, the turret 39 is provided with a large diameter gear 49 by means of bolts 47.
Properly attached to the central hub 49a of the frame member 2
It is rotatably supported by a ball bearing assembly 50 provided on the vehicle. Turret rewinder 110 Turret on gear side 37
Is rotatably supported by the frame member 111 by a ring-shaped bush 51, and the bush is engaged with the smooth cylindrical port portion 37a of the turret 37.

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

The turret 37 is tightly supported on the frame 111 by a shaft 65, which extends between the turret 37 and a generally Y-shaped outboard support bracket 67, which is bolted to the base plate. The frame member 11 is fixed by a bolt 69 fixed and inserted in the sleeve 71.
Combined with 1. The inboard portion of shaft 65 is supported within an axial bore 37c formed in central hub 37d of turret 37, while the outboard portion of shaft 65 is rotated by a ball bearing assembly 73 in the center of Y-shaped bracket 67. Supported as possible. Both ends of shaft 65 have threads and nuts
74, 75 are threaded to hold the shaft 65 to the central hub 37d of the turret 37 and ball bearings in the outboard support bracket 67. This structure provides stability for the turret 37 and prevents axial play of the turret.

To the turret 39, there are attached latching mechanisms 77 and 77 'at positions equidistant from the axis of the turret 39, and rotatably support one end of the shaft 42 for mounting the core, and ,keeping. Latch mechanism
The 77,77 'may be of conventional construction to support one end of the shaft 42 for rotation about its axis and yet hang the shaft 42 relative to the turret 39 for rotation therewith. Therefore, the latch mechanism 77, 77 'is shown diagrammatically. The first and second positions are provided at corresponding positions of the turret 37, that is, at positions corresponding to the positions of the latch mechanisms 77, 77 '.
The mandrels 41, 41 'are for receiving the other end of the shaft 42, and the core is attached to the shaft 42.

The mandrel 41 is rotatably supported within the bore 80 formed in the turret 37 by inboard and outboard ball bearing assemblies 83,85. The mandrel 41 has a sprocket 87 on its outer end.
And is driven rotationally by it. The mandrel 41 'is similar to the mandrel 41 except for the alignment of the sprocket 87 for drive purposes and will be mounted to the turret 37 in the same manner as the mandrel 41, as will become apparent from the description below. Therefore, the corresponding reference numerals, which were first applied, are applied to the corresponding parts connected to the mandrel 41, 41 '.

The mandrels 41, 41 'are respectively driven by rewinding motors 89, 89' fixed to the base plate. Turret shaft 6
Two concentric and relatively rotatable sleeve assemblies 97,9 mounted on the frame 5 between the frame member 23 and the outboard bracket 67
7 ', each of which has sprockets 93, 95 and 93', 95 ', respectively, axially spaced therefrom and attached thereto. Rewinding motor 89 drives first mandrel 41 by a chain and sprocket drive, generally indicated at 91,
The chain sprocket drive includes a pair of axially spaced sprockets 93, 95 while the second is
Rewinding motor 89 'drives second mandrel 41' by another chain and sprocket drive, generally indicated at 91 ', which drive 91' is another pair of axially spaced pairs. It includes sprockets 93 'and 95'.

The cutting knife assembly 43 is located at the printing end of the turret rewinder 110 and, as described above, acts to cut the printing paper during transfer from one coater to another. The knife assembly 43 includes a pair of brackets 92,93 which extend through frame members 23,25 and are secured to a shaft 96 rotatably mounted to the frame members. On the gear side of the turret rewinder 110, one end of the crank arm 97a (Fig. 1) is fixed to the shaft 96,
The other end 97b is pivotally connected to a piston rod 99a of a pneumatic cylinder 99 operated by a solenoid. The air cylinder 99 is pivotally connected to the foundation plate and serves to pivot the knife assembly about the shaft 96.

There is a roller 45 extending between the brackets 92 and 93 of the knife assembly 43 which engages the printing paper and causes it to rotate when the knife assembly is pivoted by the operation of the cylinder 99 as described below. Move to an excessive position. Normally, the knife assembly 43 is in the retracted position and out of the passage so as not to interfere with other actions of the rewinder. Knife assembly
The cylinder 43 is moved by the cylinder 99 from the retracted position to the transient position shown in FIG. The amount of movement of roller 45 is the same for all finished rolls of diameter so that the paper is always in the same position due to the transition to the new core. Also between the brackets 92, 93 is a cutting knife assembly 100 extending adjacent the knife roller 45. The cutting knife assembly 100 includes a knife blade 100a movable relative to its support 100b. A suitable indoor mechanism is coupled to the knife blade 100a to guide the movement of the knife blade. The knife blade 100a is moved by a cylinder 100c having a piston rod mounted appropriately. The cylinder 100c is automatically operated at an appropriate time in response to the operation of the solenoid.

A sheet guide roll 45a is connected to the knife assembly 43. The paper guide roll 45a is rotatably supported by the 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 arranged downstream of the roll 45a. In addition, the knife 100a is located downstream of the roll 45 and, as soon as it is operated, close to the roll 45, but within a range between the roll 45 and the core of the work place where the paper is currently being wound. Cut the paper.

(Problems to be Solved by the Invention) The conventional center shaftless winder includes a support bearing.
Since 50 and 51 and gears 39 and 37b are separate parts, it is necessary to secure a wide space in the width direction.Because the turrets 37 and 39 on both sides are stopped by the motor brake, the brake operation time is reduced. Variation, rattling of chain 57, gear 6
Due to the backlash of 1,37b, there were problems such as poor reproducibility of the stop position.

Also, since the turret drive motor 55 is not located in the central portion in the width direction, due to the twist of the turret drive gear connecting shaft 59,
There is a possibility that the parallelism of the winding core in the turret may change, and when the turret positioning device is attached to both sides of the turret, it is very difficult to stop the turret drive motor, and the stop signal is delayed. In this case, there is a possibility that the drive shaft or the drive gear may be damaged by excessive torque.

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

Therefore, according to the present invention, a pair of left and right turrets holding a winding core, a swivel bearing for rotatably supporting each turret on a frame, and an outer ring of the bearing for each turret. The gears are connected to the outer ring, and the teeth formed on the outer ring, a pair of left and right gears that mesh with each of the teeth, and a power transmission shaft that connects the pair of gears are arranged at approximately the intermediate position, and the transmission shaft is driven to rotate. And a turret positioning device capable of inserting and removing the respective pins in the holes formed in each of the turrets. To do.

(Operation) The pin of the turret positioning device comes out of the turret in response to the turret rotation signal, and the drive device is driven by the detection signal of the removal of this pin, and the swivel base having gears and teeth by rotationally driving the power transmission shaft. Rotate the turret by a set angle through the outer ring of the bearing. When the turret rotates the set angle,
The pin is inserted into the hole formed in the turret and the turret is fixed.

(Embodiment) The present invention will be described below with reference to embodiments of the drawings.
The figure shows an embodiment of the present invention, in which 1,11 is a turret,
A plurality of core holders 7, 8, 17, 18 are provided at symmetrical positions with respect to the center of rotation and hold the winding cores 23, 24. The cores 23 and 24 are
It is driven by a motor (not shown) having a drive mechanism similar to that of the above-mentioned conventional example, and a strip of film, paper or the like is wound. 3,13
Is a swivel bearing, the inner ring is fixed to the frames 2 and 12, and the outer ring is connected to the turrets 1 and 11. There are 3 teeth on the outer ring.
a, 13a is machined and meshes with gears 4, 14,
The rotation of 4,14 causes the turrets 1 and 11 to rotate. 5, 15 are power transmission shafts, which transmit the torque of the motor 22 to the gears 4, 14 via the speed reducer 21. Further, the couplings 25, 26, 27, 28 connected to the shafts 5, 15 have an elastic body or a torque limiter built therein to absorb impact force.

The turret positioning devices 6 and 16 are fixed to the frames 2 and 12, respectively, and the turrets are fixed at the fixed positions of the turrets 1 and 11.
Install pins 9 and 19 in the holes machined in 1 and 11 to air cylinders 6a and 16a.
The turrets 1 and 11 are positioned by pushing. The speed reducer 21 reduces the rotation of the motor 22 and transmits it to the gears 4 and 14 via the power transmission shafts 5 and 15.

Next, the operation will be described. The turret turning signal causes the pins 9 and 19 of the turret positioning devices 6 and 16 to come off.
When the signal from pins 9 and 19 (detected by a limit switch (not shown)), the motor 22 is energized and the motor 22 rotates, and the reduction gear 21, the power transmission shafts 5 and 15, and the gears 4 and 14 are passed. Turrets 1 and 11 rotate by the set angle. At this time, since the turret drive motor 22 is located substantially in the center in the width direction, the power transmission shafts 5 and 15 are twisted substantially evenly, and the parallelism of the winding cores 23 and 24 does not change even during turning of the turret. Turret
Pins 9 and 19 are inserted, and turrets 1 and 11 are fixed. An elastic body (or a torque limiter) is built in the power transmission shafts 5 and 15, so that the impact force can be absorbed even when the timing when the pins 9 and 19 enter and the timing when the motor 22 cuts off.

(Effects of the Invention) The present invention is configured as described in detail above, and by using the swivel bearing, the space in the film width direction of the machine can be reduced. Further, by providing the turret positioning pins on both turrets, the stopping accuracy of the turrets is increased and the deviation of the parallelism is eliminated. Further, since the turret drive device is arranged in the middle part of the power transmission shaft, that is, in the middle part of both turrets, it is possible to eliminate the deviation of the parallelism of the winding core in the turret due to the twist of the power transmission shaft. If a flexible coupling or torque limiter is installed on the turret drive shaft,
It is possible to absorb an excessive torque due to a time delay until the turret driving motor is stopped after the turret positioning pin is operated.

[Brief description of drawings]

FIG. 1 is a front sectional view of a center shaftless winder showing an embodiment of the present invention, FIG. 2 is a perspective view of a conventional center shaftless winder, and FIG. 3 is a sectional view taken along line AA of FIG. FIG. 4 is a sectional view taken along line BB of FIG. Description of the main parts of the figure 1,11 …… Turret, 2,12 …… Frame 3,13 …… Swivel base bearing, 3a, 13a …… Tooth 4 …… Gear, 5,15 …… Power transmission shaft 6,16 ...... Turret positioning device 7,8,17,18 …… Core holder 9,19 …… Pin, 21 …… Reducer 22 …… Motor, 23,24 …… Core 25,26,27,28 …… Cup ring

Claims (1)

(57) [Claims] 1. A pair of left and right turrets holding a winding core, a swivel bearing for rotatably supporting the turrets on a frame, respectively, and an outer ring of the bearings formed on the outer rings together with the turrets. Left and right 1 to engage with each tooth
A pair of gears, a drive device that is arranged at an approximately intermediate position of a power transmission shaft that connects the pair of gears and that rotationally drives the transmission shaft, and a pin that can move forward and backward are provided respectively, and each is formed in each of the turrets. A center shaftless winder comprising a turret positioning device capable of inserting and removing the pins in the hole.