JP3163289B2 - 3 tube type paper tube manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for continuously manufacturing a paper tube by forcibly winding a paper tape around a mandrel in a spiral manner.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show an apparatus for manufacturing a paper tube and cutting the paper tube in a series. In this apparatus, a paper tube manufacturing device (11) is arranged on the upstream side of the base (1), and a paper tube cutting device (12) is arranged on the downstream side, and the paper tube manufacturing device (11) is connected to the mandrel (2). The paper tapes (91) and (91) are spirally wound to form a paper tube (9), and the paper tube cutting device (12) is attached to the inner shaft (3) that penetrates the mandrel (2) and projects downstream. The paper tube (9) is delivered to and from (2), and the paper tube is cut by the round cutter (14).

[0003] Below the inner shaft (3), an inner shaft cantilevered by a mandrel (2).
A receiving member (13) for preventing the bending of (3) is provided. The receiving member (13) is connected to the reciprocating slide driving device (15), and the receiving member (13) is connected to the inner shaft (3).
And, while supporting the paper tube fitted on the shaft (3), it slides downstream in synchronization with the inner shaft (3), during which a plurality of round cutters (14) simultaneously press the rotating paper tube. Cut the paper tube.

[0004] When the cutting is completed, the receiving member (13) slides to the upstream side, during which the paper tube is continuously fed from the paper tube manufacturing device (11) to the inner shaft (3). Receiving member
When (13) returns to the original position, the inner shaft (3) immediately slides downstream to repeat the above operation, and is continuously formed by the paper tube manufacturing device (11) and the paper tube cutting device ( 1
The paper tube sent out in 2) is cut to the set dimensions.

[0005] The paper tube manufacturing apparatus (11) includes a winding belt (6) for winding a paper tape (91) around the mandrel (2).
0) depending on the number of rollers to hang, 2 cylinder type, 3 cylinder type,
It is called a four-cylinder type, and one or more sets of these rollers are arranged in the axial direction of the mandrel. FIG. 5 shows a three-cylinder type having one mandrel (2) and one common roller (6) on one side and two single rollers (6a) and (6b) on the other side.
(6a) (6b) Comrades are deployed so that they can approach and separate from each other,
The two endless belts (60) wound around (2) are respectively stretched between the common roller and the single rollers (6) (6a) and (6) (6b).

The paper tape (91) has a tape width selected according to the diameter of the paper tube to be manufactured, and a belt around which the paper tape is wound.
The width of (60) is selected according to the width of the paper tape, and the length of the belt is selected appropriately according to the diameter of the paper tube. Further, the independent rollers (6a) and (6b) are moved closer to or away from each other according to the tape width, and the winding angle α of the belt (60) around the mandrel (2) is adjusted optimally so that the paper tape overlaps the predetermined thickness. We aim to manufacture tight and beautiful paper tubes with no openings.

However, there is a problem which cannot be solved by a conventional three-tube type paper tube manufacturing machine. It depends on the length of the belt (60), the common roller (6) and the mandrel (2).
And the distance between the single rollers (6a) and (6b) cannot be made substantially the same.

In order to change the length of the belt (60) and adjust the belt tension, the single rollers (6a) and (6b)
The common roller (6) cannot be moved from a fixed position, although it is provided so as to be able to approach and separate from the mandrel (2). Therefore, in order to replace the belt (60) having a different size or adjust the belt tension, the single roller (6a) (6
When the position of b) is adjusted, the single roller (6) and the mandrel (2)
And the distance between the common roller (6) and the mandrel (2) change. If the distance between the single roller (6a) (6b) and the mandrel (2) and the distance between the common roller (6) and the mandrel (2) are different, the pulling force of the belt (60) on the mandrel (2) to the left and right Delicately changes, and the mandrel (2) swings during operation, hindering stable winding of the paper tape around the mandrel (2), and making it impossible to obtain a paper tube in a good wound state. The present invention clarifies a paper tube manufacturing apparatus that can solve the above-described problem by allowing the position of the common roller to be adjusted toward and away from the mandrel.

[0009]

According to a first aspect of the present invention, there is provided a paper tube manufacturing apparatus comprising: a common roller (6) on one side of a mandrel (2) and two single rollers (6a) (6b) on the other side; Rollers (6a) and (6b) are arranged so that they can approach and separate from each other, and the two endless belts (60) wound around the mandrel (2) are used as common rollers and single rollers, respectively.
(6) It is wrapped between (6a) and (6) (6b), and the paper tape supplied on the mandrel (2) is helically wound around the mandrel (2) by the rotation of the belt (60) and is extruded downstream. In a paper tube manufacturing device for manufacturing a paper tube, three rollers (6) (6
a) (6b) is arranged on a common slide base (8), and the slide base (8) is slidably provided in a direction parallel to the mandrel (2) in a plane parallel to the mandrel (2);
A slide drive device is connected to the base, and the two independent rollers (6a) and (6b) are provided so as to be able to approach and separate from the common roller (6) and to be positionable.

According to a second aspect of the present invention, the common roller can be moved toward and away from the mandrel and positioned in a plane parallel to the mandrel, and each single roller can be moved toward and away from the mandrel and positioned independently. Deployed in

[0011]

According to the first aspect of the present invention, the common roller (6) for the mandrel (2) is moved by moving the slide base (8) perpendicular to the mandrel in a plane parallel to the mandrel (2). ) Can be adjusted so that the distance between the single rollers (6a) and (6b) is the same, and the belt with respect to the mandrel (2) can be adjusted.
Mandrel by antagonizing left and right pulling force by (60)
(2) The run-out is minimized, and the paper tape is stably wound around the mandrel (2), so that a paper tube with a good winding state can be manufactured.

According to the second aspect of the present invention, the single roller (6
a) (6b) and the common roller (6) are independently adjusted in position,
It can be adjusted so that the distance to the mandrel (2) is equal.

[0013]

FIG. 1 is a plan view showing a main part of a three-tube type paper tube manufacturing apparatus according to the present invention. On the base (1), one end is fixed to the mandrel support head (21), and a mandrel (2) protrudes in parallel with the base (1). A slide base (8) slidable two-dimensionally in a horizontal plane is provided between the base (1) and the mandrel (2), and on the base,
A common roller (6) is provided on one side of the mandrel (2), and two independent rollers (6a) and (6b) are provided on the other side, and two endless belts (60) wound around the mandrel (2). (60) is stretched between the common roller (6) and each single roller (6) (6a).

The slide base (8) includes a first base (82) slidable in a direction along the axis of the mandrel (2) by a guide rail (81) on the base (1), and a first base (82). And a second base (84) slidable in a direction perpendicular to the axis of the mandrel (2) by the guide rail (83). The first base (82) and the second base (84) respectively include Slide driving devices (85) and (86) that slide independently are linked. Example slide drive device (85) (86)
The screw shaft is rotated by a handwheel (87), (88) or a motor drive, and a screw thrust generated by the rotation is used.

The common roller (6) is provided on a second base (84), and the single rollers (6a) and (6b) are shared about a pivot (30) (30) near the common roller (6). On a pair of roller support frames (3) (3) pivoting on the second base (84) symmetrically with respect to the roller (6), a mandrel is provided via a support member (31).
It is arranged so that it can be approached and separated from (2). The roller supporting frame (3) has a single roller (6a) on the frame (3) (3).
A slide drive device (4) for slidingly driving (6b) is provided.

The slide drive unit (4) is provided with a drive shaft (42) with a handwheel (43) and a screw shaft (41) arranged in a freely rotatable and parallel manner along the roller support frame (3). 41) is screwed through the support member (31) to form the drive shaft (42).
And the screw shaft (41) are connected via gears (44) and (45). When the handwheel (43) is turned, the screw shaft (41) rotates, and the support member (31) slides along the screw shaft due to the thrust of the screw, replacing the belt (60) with a different length or adjusting the belt tension. Can deal with.

A roller support frame rotating device (5) is connected to both roller support frames (3). The roller supporting frame rotating device (5) is provided with a gear box (53) at an intermediate position between the two roller supporting frames (3) on the second base (84), and an output shaft ( Screw shafts (57) and (57) are connected to both ends of 58) via universal joints, and the screw shafts (57) are screwed into blocks (56) provided on each roller support frame (3) and penetrated. ing. A drive motor (52) is connected to the output shaft (58) of the gear box (53), and the rotation of the motor allows the roller support frames (3) and (3) to open and close, and the single rollers (6a) (6b ) Can be moved closer to or away from each other to adjust the winding angle of the belt (60) around the mandrel (2).

Each common roller (6) and individual rollers (6a) (6b)
Are connected to independent motors (7), (7a), (7b). The motor (7) for driving the common roller (6) includes a second base (84).
A roller (6a) mounted concentrically with the roller (6).
Motors (7a) and (7b) for driving (6b) are mounted on the lower surfaces of the support members (31) and (31) concentrically with the rollers. Motor (7
a) (7b) is the base (1) in a state where there is room to move forward, backward, left and right from the opening formed in the ceiling plate of the base (8) and the base (1).
Inside.

Each motor is connected in parallel to one inverter (not shown), and is energized via the inverter.
As is well known, when the motors are operated in parallel by one inverter, the motors can be tuned.

However, when the length of the belt (60) is changed in a setup change accompanying a change in the diameter of the paper tube to be manufactured, the second base (84) is moved by the slide drive device (85) to the mandrel (85). By moving the mandrel (2) perpendicular to the plane parallel to (2), the distance between the common roller (6) and the single roller (6a) (6b) with respect to the mandrel (2) can be adjusted. The belt (60) pulls the mandrel (2) against the right and left pulling forces to minimize the deflection of the mandrel (2), and wraps the paper tape (91) stably around the mandrel (2). Can manufacture paper tubes.

Since the mandrel (2) is cantilevered, it is more effective to move the belts (60) and (60) toward the mandrel support side, that is, the head (21) as much as possible, so that the deflection of the mandrel (2) is more effective. However, if the slide base (8) can be slid and positioned in the direction along the axis of the mandrel as in the embodiment, the rollers (6) and (6a) can be adjusted according to the width of the paper tape. (6b), that is, the paper tape can be wound around the mandrel (2) more stably by bringing the belt (60) as close to the head (21) as possible.

Further, as in the embodiment, the rollers (6) (6a) (6b)
The motors (7), (7a) and (7b) are deployed in close proximity to the rollers (6) and (6).
If the rotation transmission path between a) (6b) and the motors (7), (7a), (7b) is made short and simple, the driving sound is quiet and the belt (60) can run stably. Further, since the rotation transmission path can be configured to be short and simple, the number of parts can be significantly reduced, and labor for processing and assembling the parts can be reduced.

When three motors are operated in parallel by the inverter, rotation unevenness tends to occur between the rollers due to differences in loads acting on the rollers (6), (6a) and (6b). The common roller (6) and the single rollers (6a) (6b)
Since the rollers (0) and (60) are tensioned, the three rollers (6) and (6)
a) The rotation spot of (6b) is negligible, and no problem occurs.

FIG. 4 shows another embodiment of the present invention. In the same manner as described above, the independent rollers (6a) and (6b) are arranged on the second base (84) via the support frames (3) and (3). The common roller (6) is provided on a base (89) slidably fitted in the elongated hole (80) opened in the second base (84), and is provided in a horizontal plane parallel to the mandrel (2). ). Slide drive (9) connected to the table (89)
Thereby, the common roller (6) can approach and separate from and position the mandrel (2) alone, and the same effect as described above can be obtained. In FIG. 4, the slide drive mechanism of the single rollers (6a) and (6b) has been described in FIG. 1 and is omitted.

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the claims.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a paper tube manufacturing apparatus.

FIG. 2 is a plan view showing a mounting position of a base and a slide driving device thereof.

FIG. 3 is a front view of a main part of the paper tube manufacturing apparatus.

FIG. 4 is a plan view of a main part of a paper tube manufacturing apparatus according to another embodiment.

FIG. 5 is a plan view of a conventional paper tube manufacturing device and a paper tube cutting device.

FIG. 6 is a front view of the same.

[Explanation of symbols]

 (1) Base (2) Mandrel (3) Roller support frame (6) Roller (7) Motor

Claims (2)

(57) [Claims] 1. A single common roller is provided on one side of a mandrel, and two single rollers are provided on the other side so that the single rollers can approach and separate from each other, and two endless belts wound around the mandrel are used as common rollers. And a single roller
In a paper tube manufacturing apparatus for manufacturing a paper tube by winding a paper tape supplied on a mandrel around a mandrel by spiraling around a belt and extruding it downstream, the above three rollers are arranged on a common slide base. The slide base is provided so as to be slidable in a direction perpendicular to the mandrel in a plane parallel to the mandrel, a slide drive device is linked to the slide base, and both single rollers are
A three-tube cylindrical paper tube manufacturing apparatus provided on a slide base so as to be capable of approaching / separating and positioning with respect to a common roller. 2. One end of a mandrel is provided with one common roller, and the other end is provided with two single rollers capable of approaching and separating from each other, and two endless belts wound around the mandrel are provided with a common roller and a single roller, respectively. In a paper tube manufacturing apparatus that manufactures a paper tube by wrapping the paper tape supplied on the mandrel between the belts and spirally wrapping the mandrel around the belt while extruding it downstream, the common roller is a surface parallel to the mandrel. A three-cylinder paper tube manufacturing apparatus in which a single roller can be approached to and separated from a mandrel and can be positioned;