JPH0442283Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is used for threading films and other paper fabrics manufactured by biaxially stretched film manufacturing equipment, non-stretched film manufacturing equipment, etc. The present invention relates to a paper passing device for a belt-shaped material.

[Conventional technology]

FIG. 2 shows a conventional belt-shaped material passing device. In the conventional paper passing device, the tip of the strip 01 is fixed to an endless rope 02, and the rope 02 is rotated by a drive motor 09 via a guide roll 07 and a rope tensioner 018. A set value corresponding to a predetermined drive torque is input from the drive torque setter 012 to the voltage regulator 013,
The output voltage is applied to the drive motor 09 via the electromagnetic contactor 017.

In this way, by moving the endless rope 02 in the direction of the arrow in the figure, the strip 01 whose tip end is fixed to the rope 02 is moved.

[Problem that the invention attempts to solve]

In the above-mentioned conventional belt-like paper passing device, the paper is passed while rotating an endless rope using a single drive motor as mentioned above, so it is difficult to control the tension of the rope, and excessive tension can occur. There was a problem with the rope seams breaking.

The present invention attempts to solve this problem.

[Means for solving problems]

The present invention is a paper threading device that connects the tip of a strip of film or other material to a rope and threads the paper by moving the rope. It is equipped with a drum and a top that traverses in the axial direction of the drum in synchronization with the rotation of the drum and guides the rope.

[Effect]

In the present invention, when the drum is rotated in one direction, one end of the rope wound on the drum is unwound from the drum, and the other end is wound around the drum and the rope is unwound. moves, and along with this, the belt-shaped body also moves together with the rope, and paper threading is performed. When the paper threading is completed, the strip is removed from the rope and the drum is rotated in the opposite direction, thereby moving the rope in the opposite direction and returning to the standby position for the next paper threading.

As described above, since only one drum is required, the device is simple and the cost is reduced. In addition, both ends of the rope are wrapped around the drum and there is no seam, so there is no risk of the rope seam breaking.

Furthermore, since the rope is guided by a piece that traverses in the axial direction of the drum in synchronization with the rotation of the drum, the rope can be reliably unwound and taken up, and the web can be threaded securely. As the rope is conditioned, it is neatly wrapped in single wraps on the drum.

〔Example〕

An embodiment of the present invention will be described with reference to FIG.

Reference numeral 1 denotes a drum, and fixing fittings 12 and 13 to which both ends of a rope 16 are fixed are provided on both sides of the drum.
Reference numeral 3 denotes a torque motor capable of forward and reverse rotation, which is connected to a toothed pulley 6 via a reducer 4, and rotates the drum 1 via the toothed pulley 6 and a toothed belt 5 driven by the toothed pulley 6. It's getting old. A toothed pulley 8 is provided at the end of the rotating shaft of the drum 1, and a ball bearing shaft 2 located parallel to the axis of the drum 1 is synchronized with the drum 1 via a toothed belt 7 driven by the toothed pulley 8. It is designed to be rotated. Reference numeral 14 denotes a top that is attached to the ball bearing shaft 2 and moves (traverses) in the axial direction of the same shaft as the same shaft rotates.

10 and 11 are limit switches provided along the ball bearing shaft 2.

Reference numeral 16 is a rope whose both ends are attached to the drum 1 and wound thereon, as will be described later, and is a paper passing rope that is guided by the above-mentioned frame 14 and passes through the tensioner 9, guide roll 15, etc. The paper passing rope 16 is guided by a belt-shaped body 17.
The flute 18 attached to the tip of the machine is fixed in the starting position shown in FIG.

The limit switches 10 and 11 are respectively provided at positions for detecting the top 14 when the fixing point of the thread 18 to the paper passing rope 16 moves to the starting position and the final position.

The following method is used to wrap the paper passing rope 16 around the drum 1.

That is, the rope 16 is fixed to one end of the drum 1 with the fixing metal fitting 12, and the drum 1 is rotated in one direction to wrap the rope 16 around the drum. The length of the rope 16 wound at this time is at least the rope length required to guide the welt thread 18 from the starting position to the final position. Once one winding is completed in this way, either fix the opposite end of the rope to the other end of the drum 1 with the fixing fitting 13, or move the rope near the opposite end in the opposite direction to the above-mentioned winding direction. The end of the rope on the opposite side of the upper end of the rope wrapped around the drum 1 is fixed to the other end of the drum 1 in the same manner. In this way, as the drum 1 rotates in either direction, the paper passing rope 16 is wound onto the drum 1 such that it is simultaneously wound up and unwound by the drum 1.

Since this embodiment is configured as described above,
When the drum 1 is rotated forward in the direction of the arrow by the torque motor 3, the paper passing rope 16 is unwound from the drum 1 on the one hand and wound onto the drum 1 on the other hand, and is rotated on the ball bearing shaft 2. The strip 17 is then guided by a piece 14 moving in the axial direction of the drum 1, moves in the direction of the arrow via the tensioner 9, guide roll 15, etc., and guides the strip 17 to the final position shown in FIG.

When the strip 17 has reached its final position, the string 18
Remove the strip 17 from. The rope 16 is unwound by rotating the drum 1 in the opposite direction to the starting position.
Takes a standby position in preparation for the next paper feed.

Note that since the speed reducer 4 is provided between the torque motor 3 and the drum 1 as described above, the paper passing roll 16 is moved at a speed suitable for paper passing.

Further, the rotation of the drum 1 and the rotation of the ball bearing shaft 2 which is a traverse device for the rope 16 are synchronized, and the rotation of the ball bearing shaft 2 moves the top 14 by the rotation of the same shaft 2. As a result, the paper passing rope 16 is wrapped around the drum 1 in a single layer.

When the paper passing rope 16 reaches the starting position and the final position, the limit switches 10 and 11 detect this due to the movement of the top 14, and stop the torque motor 3 in response to the confirmation signal to stop the drum 1 and the ball. Stop the bearing shaft 2.

As described above, in this embodiment, both ends of the paper passing rope 16 are fixed to the drum 1 and there is no seam in the paper passing rope 16, so there is no risk of the paper passing rope 16 breaking. Further, since the paper passing rope 16 can be wound up and unwound using one drum, only one drum is required, and the driving device can be simplified.

Furthermore, the paper passing rope 16 can be traversed by the top 14 to form a neat single winding on the drum 1, and its starting and final positions can be ensured.

[Effect of idea]

The present invention can have the following effects.

(1) There are no rope seams, so rope breakage does not occur.

(2) Since winding and unwinding can be done with one drum, the driving device is simple and the cost of the device is also reduced.

(3) By guiding the rope by a piece that traverses in the axial direction of the drum, the rope can be wound in a single layer on the drum, and the rope is wound neatly on the drum, and the starting position and final position of the rope are The position can be made accurate. Further, by being guided by the above-mentioned pieces, the movement of the rope and therefore the movement of the strip can be ensured, and the strip can be passed smoothly.

[Brief explanation of the drawing]

Figure 1 is a plan view of one embodiment of the present invention (however, 2
The portion (encircled by a dotted chain line) is a side view, and FIG. 2 is a schematic diagram of a conventional paper passing device. 1...Drum, 2...Ball bearing shaft for traverse, 3...Torque motor, 4...Reducer,
5...Toothed belt, 6...Toothed pulley, 7...Toothed belt, 8...Toothed pulley, 9...Tensioner, 10,11...Limit switch, 12,1
3... Rope fixing metal fittings, 14... Traverse piece.

Claims (1)

[Scope of utility model registration request] A paper threading device that connects the tip of a strip to a rope and threads the paper by moving the rope, includes a drum that rotates in forward and reverse directions with both ends of the rope wound in opposite directions, and a drum that rotates in forward and reverse directions. 1. A paper passing device for a belt-shaped article, comprising a piece that traverses in the axial direction of the drum in synchronization with the rotation of the drum and guides the rope.