JPS60165233A - Production unit for spiral paper tube - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a paper tube by spirally winding a paper tape around a mandrel.

As shown in Fig. 5, the conventional spiral paper tube is made of mandrel (
1) wrapped around two endless bells l-+2) (21+, respectively, with a pair of rollers t3+ +31), +32+ +
The paper tape (T) is wound around the mandrel (1) in a spiral manner, and the paper tape (T) is further tightened by the bells (2) and (21), and is sent in the axial direction of the mandrel.

Fig. 4 shows a conventional example of a spiral paper tube manufacturing machine, and there are two pairs of rollers T31131+ and +32 on which each belt is applied.
1 (331, each one roller +31 +321 is pivoted in a fixed position on the base (4), and the other roller (31
1 (331 is a pair of frames arranged in a substantially V-shape so that they can be opened and closed + 5) (The frames are arranged on 511 so that they can be positioned in the longitudinal direction of the frame.
issue).

In the above device, when the tension of the belt is adjusted by changing the position of the roller (311 (33)) on the seam, the other roller (t31 (32)) is placed in the fixed position, so the belt against the mandrel (1) is adjusted. There was a problem in that the tension angle of the paper tape changed, and therefore the winding angle of the paper tape also changed.

On the other hand, if you try to change the winding angle of the paper tape, the belt tension will also change. Therefore, it is necessary to adjust both the tension angle and the tension of the belt, and the adjustment work is troublesome.

In addition, the drive mechanism for the four rollers (3) to (33) meshes the main gear (6a) driven by the drive gear (60) with four follower gears (61a) (61b).
Two follower gears (61a) (61a) with positioning roller t3)
Directly connect $21 to the other two driven gears (61b) (61b
) are respectively connected to a first bevel gear mechanism (64, spline shaft +63+) and a second bevel gear mechanism (adjusting roller (31) 133 via 641).

As mentioned above, five gears including the drive gear are meshed with the main gear (6a), and each gear +60+ (61a) (6
1b) and the members on each gear must be prevented from interfering with each other, the main gear (6a) will inevitably have a large diameter, and the subordinate gears (61a) (61b) and the drive gear (60
) are of small diameter.

However, when the small diameter drive gear (60) is used, the large diameter main gear (60)
When driving a), it is a deceleration drive, and the large diameter main gear (
When driving the small-diameter follower gears (61a) (61b) in step 6a), increased speed driving is performed. Incorporating a speed increase mechanism and a deceleration mechanism into one rotation transmission mechanism in this way causes a large loss of mechanical power and requires a large horsepower motor.

However, there are many problems such as the generation of vibration due to the rotation of the large-diameter main gear (6a), and the early damage of the bearing supporting the main gear due to this vibration.

Also, connect the two bells l-'(2) (21+ to the mandrel (
If the paper tape is stretched at a symmetrical angle with respect to 1), there is theoretically no difference in the force with which the paper tape is wound around the mandrel (1) and pushed downstream between the two belts.

Therefore, if the belt and paper tape do not slip, and the winding angle of the paper tape is properly set, the paper tube to be manufactured will have an opening, that is, a spiral shape (and the gap between the rolled paper tapes should be constant.In reality, during operation A slight slip difference occurs between both belts and the paper tape, causing openings in the paper tube.

〔the purpose〕

In the present invention, even if the belt tension is adjusted, the tension angle of the heald does not change, and even if the belt tension angle is changed, the belt tension can be kept constant, and there is no waste in the rotation transmission mechanism. The purpose of the present invention is to provide a serial paper tube manufacturing device.

Another object of the present invention is to provide a paper tube manufacturing apparatus capable of spirally winding tape while preventing opening of the paper tube.

〔composition〕

The present application includes two inventions, and the configuration of the first invention is such that a pair of support frames +5) (51) are provided across the mandrel so that their distal ends can be opened and closed, and the base ends of both support frames are provided with a pair of support frames +51 (51). +51) on the rotation center
, 30th La t31 + 32) are arranged, and 20th La C1) and 40th La 63) are arranged movably in the longitudinal direction of each frame on the other end side of the support frames (5) and (51). and the above-mentioned No. 1. The 30th-later t31 (32) is characterized in that it is linked to a common drive vehicle (6).

The configuration of the second invention is characterized in that, in addition to the configuration of the first invention, the rotation center of the support frame +51611 is provided on the rotary table (41).

[Action and effect]

A pair of rollers t3101+, +321 on the same frame
By tensioning the belt +2+ 21) on (33), even if you change the opening angle of the frame +51 +51+ and adjust the belt tension angle with respect to the mandrel, the distance between rollers (3) +311 and @ (33) will remain the same. does not change, therefore the belt tension remains the same and no readjustment of the tension is necessary. Moreover, even if the tension is adjusted, the tension angle of the belt does not change, so there is no need to adjust the tension angle every time the tension is changed.

The driving vehicle (6) has a first. Since it is only necessary to engage the two driven wheels (61) +611 of the 30th-ra (3) @, the driving wheel can be made smaller, and the disadvantages caused by the conventional large driving wheel are eliminated.

Furthermore, rotate the turntable (411) slightly and attach the support frame (5
) 51+ angle Therefore, both belts +21 (21) can be stretched at an asymmetrical angle with respect to the mandrel (1),
The angle of the second belt at+ is made smaller than the angle of the first belt (2) with respect to the mandrel (1), and the second belt a
The extrusion speed of the paper tape is lowered than that of the first belt (2), and a force is applied between both bells L-(21 (211) to reduce the gap between the paper tapes CT1, thereby reducing the gap between the paper tapes. This has the advantage of preventing the so-called opening from occurring.

The present invention will be specifically explained below based on embodiments shown in the drawings.

In FIG. 1, a paper tape (1) is wound on a mandrel (1) in the direction of arrow (A1) to form a paper tube, which is then pushed out in the direction of arrow (A2).

The upstream belt (2) is the first belt, and the downstream belt 1
21) is called the second belt, and the two rollers t31 (311 are 1st, 20th,
Two rollers G321 that tension the second belt (21)
(33) as the third. It is called 40th-Ra. In the example, 1st.
Between the 30th-ra (3) and (32), the 2nd. No. 40-La (3
1) Narrower than between ffl+.

A base (4) is disposed below the mandrel (1), and a circular hollow rotary table (4υ) is disposed on the base (4) so as to be rotatable in a horizontal plane.

A pair of support frames (5) are installed on the top surface of the rotary table +41).
The proximal end of the mandrel (1) passes below the mandrel (1) in a substantially V-shape in a horizontal plane, and the ends thereof are arranged so as to be openable and closable.

The bottom of the turntable (41) (with a worm gear (
43) is fixed, and a manual handle (4) is attached to the gear (43).
A worm (45) rotationally driven by the rotation table 4) is connected to form a rotation drive device (46) for the rotation table (411).

The bottom surface (42) of the rotary table (41) and the worm gear (43)
), a drive main shaft (65) is disposed so as to be rotatable independently of the rotation of the turntable (41), and the drive main shaft (65)
A small diameter drive wheel (6) is fixed to the tip of the drive shaft (B
The base end of 5) is connected to the transmission motor (5).

A pair of driven wheels (611+6) meshing with the driving wheel (6)
11 is pivotally equipped in the rotary table (411), and each driven wheel (6
1)'s rotating shaft (@ extends upward through the rotary table (41), freely rotates through the base end of the support frame +51 +51), and has a first and a 20th -ra+3+ (31) at the penetrating end.
1 is locked.

Support frame +5) (5) A guide groove 62 is formed from the proximal side to the distal side, and the slide block 1 is inserted into the groove 62).
53) is slidably fitted onto the upper surface of the slide block 63). The 40th-ra (31) +331 is freely rotatable.

Further, a spline shaft (63) is freely rotatably disposed in the guide groove (52), and the tip of the shirt (1-' +63) is connected to the rotating shaft (63) by a bevel gear mechanism (62). .

A bevel gear pivoted within the slide block (53) is slidably fitted into the spline shaft (63), and the threaded shaft (55) meshes with the bevel gear ts4.
1 through the second. The 40th-ra f311 (33) is connected.

A slide adjustment screw shaft □□□) is screwed into the slide block (53), and a rotating manual handle 67) is connected to the screw shaft (55) via a gear transmission mechanism 156).

Both supporting frames +5) +51+ are connected to a frame opening/closing device (7), and the opening/closing device (7) is slidable downward in the longitudinal direction of both frames +51 +51) to a receiving block t7. ]) +71), screw the right-hand screw shaft (72) into one block +711, the left-hand screw shaft [73] into the other block (71), and screw both screw shafts (
7z +73+ to universal joint (741(7
4) is connected to a rotating shaft (75), and the shaft (to) is connected to a manual handle surface via a gear transmission means (16), and by turning the handle, both Frame t5) (The V-shaped opening of 511 can be expanded or contracted.

Therefore, the mandrel (1) between each two rollers [31 (31+, country (33)) on the same frame (51 (511)
The 1st degree second belt +2+ (21) is wound around the belt and the drive wheel (6) is rotated.

Driven vehicle (6I) and 1st. The 30th latch (3) (2) rotates, and the 2nd and 40th latch t311 +331 is forcibly rotated via the bevel gear mechanism +62), the spline shaft (611, and the bevel gear 6a), and the bell l-+2j
(21+ rotates, and thereby the paper tape (1) is spirally wound around the mandrel (1) to produce a paper tube.

When the thickness of the paper tube and the width of the paper tape are changed, the winding angle of the paper tape can be changed accordingly by adjusting the opening angle of the support frame +51511 using the opening/closing device (7) and moving the bell 112 against the mandrel (1). ) Change the tension angle of 1211.

Roller (31(3) for tensioning belt t12N21)
11, i (33) is placed on the same frame +5151i, so even if you change the opening angle of frame +51 t51), the roller 13 on f511
)(311, the distance t3Z(33) does not change, therefore the belt tension does not change.

Therefore, there is no need to readjust the tension every time the tension angle of the belt is changed as in the past.

Also, even if the belt tension is adjusted, the tension angle of the belt does not change.

In the present invention, when the rotating table (411) is slightly rotated in a horizontal plane, the rotating table (two support frames on 41J + 5) (
The center of rotation of 511 can be displaced.

Therefore, as shown in Fig. 3, by making the tension angle θ2 of the second belt () with respect to the mandrel (1) smaller than the angle θ of the first belt (2), the paper tape can be pushed out by the first belt (2). The speed can be made smaller by the second belt, and a force acts between both bells l-(21121i) that reduces the gap between the paper tapes (T), creating a gap between the spirally wound paper tapes, the so-called phenomenon. Opening of the mouth is prevented.

Furthermore, in the present invention, two driven wheels 16 are provided for the driving wheel (6).
11 +611, the driving wheel (6
) can be made small in diameter, and the disadvantages caused by making the conventional drive wheel (6) large in diameter are eliminated.

In addition, if the width of the paper tape is wide, the first one on the drive wheel (6) side,
30th - La (3) (support) interval than the opponent's 2nd. 40th
-Ra (311+331 may be used by narrowing the interval.

Also, between the 10th La (3) and the 40th La country and the 20th La
It is also possible to use belts stretched in an X-shape between the -ra (311) and the 30th-ra (321).

[Brief explanation of the drawing]

Fig. 1 is a plan view of the paper tube manufacturing apparatus, Fig. 2 is a sectional view of the same as above, Fig. 3 is a plan view of an embodiment in which the tension angle of the first belt is larger than that of the second belt, and Fig. 4 is a plan view of the conventional example, and FIG. 5 is an explanatory diagram of the tension state of the belt in the conventional example. (1)...Mandrel

Claims (1)

[Claims] ■ Two pairs of rollers are arranged along the mandrel, with one roller on each side sandwiching the mandrel (1);
An endless belt of books is wound around a mandrel, passed through rollers on both sides of the mandrel, and as the belt goes around, the paper tape is wound around the mandrel in a spiral shape and extruded downstream to produce a paper tube. A pair of roller support frames +5) 151) are provided across the roller support frames +51 and +511, and the distal ends of the roller support frames +51 and +511 are configured to be openable and closable. 1. A 30th-ra (31G2) is arranged to connect the 1st 30th-ra t3+ +321 to a common drive wheel (6), and a frame +51 +511 is installed on the tip side of each frame +51 (511). The 2nd and 40th-ra (33) are disposed so as to be movable in the longitudinal direction of the frame, and the 2nd and 40th-ra (311+331 are the 1st and 30th-ra at the base end of each frame) are disposed so as to be movable in the longitudinal direction. (3) Spiral paper tube manufacturing equipment that is connected to the government and rotates simultaneously. ■ Two pairs of rollers are placed along the mandrel, each with a roller for one on the inside, sandwiching the mandrel (1).
An endless belt of books is wound around a mandrel, passed through rollers on both sides of the mandrel, and as the belt goes around, paper tape is wound around the mandrel in a spiral shape and extruded downstream to produce a paper tube. ), a pair of roller support frames +5+ +511 are arranged on the rotating table (41), and the roller support frames +5115
The tip side of 1+ can be opened and closed, and both frames +5) +
51) on the base end side thereof, there is a first . 30th-latt3) +32) is arranged and the 1st. 30th-La 13)
+32) to a common drive vehicle (6), and each frame! There is a frame (51 (511) on the tip side of 5+ +511
The second. 40th-La t311 +
331, and the second. No. 40-La (3
11+331 are the respective 1st. 30th-Lat31 (Spiral paper tube manufacturing device that is linked with 321 and rotates at the same time.