JPH0767769B2 - 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 a device 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 A paper tube manufacturing apparatus is called a two-base cylinder type, a three-base cylinder type, or a four-base cylinder type depending on the number of rollers on which a winding belt for winding a paper tape around a mandrel is applied. Multiple sets are deployed in the axial direction.

4 and 5 show an example of a conventional three-base tube type paper tube manufacturing apparatus. On the base (1), one end is fixed to the mandrel support head (21), and the mandrel is leveled horizontally.
(2) is deployed and the first is on one side of the mandrel (2).
Roller (6), on the other side, second and third rollers (6a) (6b)
The two endless belts (60) (60) wound around the mandrel (2) between the first and second rollers (6) (6a) and the first,
It is stretched between the third rollers (6) and (6b).

The second and third rollers (6a) and (6b) are the first rollers.
A roller is supported on a support member (31) slidably mounted on a pair of roller support frames (3) and (3) which rotate on a base (1) with an axis P of (6) as a fulcrum, and the roller is supported by the roller. Support frame
(3) The mandrel (2) can be moved toward and away from the mandrel (2) by the rotation of (3) and the back and forth movement of the support member (31). Both roller support frames (3) and (3) are connected to the roller support frame rotation device (5) to open and close between the roller support frames (3) and (3), that is, the second and third rollers (6a). Approach (6b) or move away from it.

By operating the roller supporting frame rotating device (5), the second and third rollers (6a) and (6b) can be displaced to arbitrarily set the winding angle of the paper tape, and the supporting member slide driving device can be set. By the operation of (4), the support member (31) is moved back and forth to bring the second and third rollers (6a) and (6b) close to or away from the first roller (6), and the belt (60) is moved. Adjust the tension. The rollers (6), (6a) and (6b) are connected to each other through a chain (85), a gear group in a gear box (81), a universal joint (82), a spiral shaft (83) and a universal joint (84). ing.

FIG. 6 shows another embodiment in which a motor (not shown) is connected to a main gear (92) via a worm (9) and a worm wheel (91), and the main gear (92) is connected to the main gear (92). The first roller (6) is connected through the slave gear (94), and the main gear (92) is the slave gear.
(93), bevel gear (95), drive shaft (96), bevel gear
It is connected to the second roller (6a) via (97). In FIG. 6, a two-base cylinder type of the first roller (6) and the second roller (6a) is shown, but the main gear (92) is further driven by another driven gear.
The third roller (6b) may be provided in the same manner as the roller (6a) to form a three-base cylinder type. Also in the case of FIG. 6, the second roller (6
a) is supported by a support member (31) on a roller support frame (3) that can be horizontally swiveled around an axis P of the main gear (92), and the roller support frame (3) is a slide guide table. It is shown slidably in (11).

[0007]

Although the above-described conventional paper tube manufacturing apparatus has been able to manufacture paper tubes of the second and highest qualities, it is ideal for manufacturing stiff and beautiful high quality paper tubes with no openings. The device has not been reached. Conventional paper tube manufacturing equipment uses each roller
(6) (6a) and (6b) were forcibly driven at the same rotation speed, and it was thought that the belt would rotate while maintaining proper tension. However, as shown in FIG. 8, although the tension of the belt (60a) pulled out from the mandrel (2) is large, the mandrel (2)
The tension of the belt (60b) on the feeding side is small, and a gap S is formed between the belt (60b) on the feeding side and the mandrel (2). Has an idea. And each roller (6) (6a)
By enabling the rotation speeds of (6b) by separate motors, respectively, it is possible to stably wind the paper tape around the mandrel (2) without causing a difference in the tension of the belt near the mandrel (2). It succeeded in producing a paper tube close to.

[0008]

According to the present invention, rollers (6), (6a) and (6b) are arranged on both sides of the mandrel (2) with the mandrel (2) interposed therebetween, and the roller (6) on one side of the mandrel (2). Is pivotally supported at a fixed position on the base, and the rollers (6a) and (6b) on the other side of the mandrel (2) are provided so as to be movable back and forth on a support frame (3) that rotates on the base. The endless belt (60), which is axially supported by the support member (31) and wound around the mandrel (2), is connected to the rollers (6) (6a) (6).
In a paper tube manufacturing apparatus for manufacturing a paper tube, which is wound around a mandrel (2) while being wound around the mandrel (2) spirally around the mandrel (2) while being wound around the mandrel (2) and wound around the mandrel (2). Each support member on the roller support frame (3)
The roller driving motors (7a) and (7b) are individually attached to the (31), and the rollers (6a) and (6b) pivotally supported by the respective supporting members (31) are respectively for driving the rollers on the supporting members (31). Connect to the motor (7a) (7b),
The fixed position roller (6) is connected to the motor (7) attached to the base, and the speed of each motor (7), (7a), (7b) can be adjusted individually.

[0009]

[Operation and effect] Since the rotation speed of each roller (6), (6a), (6b) can be adjusted individually, the belt is sandwiched between the mandrels (6).
The tension of (2) can be adjusted so that the tension on the discharge side and the tension on the supply side are almost the same, and the paper tape can be stably wound around the mandrel to produce a rigid and beautiful paper tube without openings.

Since the rollers (6), (6a) and (6b) are driven by independent motors (7), (7a) and (7b) respectively,
(6) (6a) (6b) is approached and motors (7) (7a) (7b) are deployed,
The rollers (6) (6a) (6b) and the motors (7) (7a) (7b) can be connected by a short and simple rotation transmission path. For this reason, the output of the motor can be used more efficiently and the noise and impact due to the impact when the teeth are meshed can be more efficiently compared to the case where the long and complicated rotation transmission path by the gear train and the spiral shaft (83) is used. Occurrence can be suppressed.

[0011]

EXAMPLE As shown in FIGS. 1 and 2, the example is a three-base cylinder type having three rollers (6), (6a), and (6b), but is not limited to this. Of course, the base cylinder type, the four base cylinder type, and a plurality of sets of these arranged in the axial direction of the mandrel can be implemented. On the base (1), one end is fixed to the mandrel supporting head (21), and the mandrel (2) is arranged in parallel with the base (1). Roller (6), on the other side, second and third rollers (6a) (6
b) is provided and two endless belts (60) (60) wound around the mandrel (2) are provided between the first and second rollers (6) (6a) and the first and third rollers (6) ( 6b) is installed between them.

The second and third rollers (6a) and (6b) are the first rollers.
The mandrel (2) can be moved toward and away from the mandrel (2) via a support member (31) on a pair of roller support frames (3) and (3) that swivel on the base (1) around the axis P of (6). It has been deployed. The free ends of the roller support frames (3) (3) are slidably mounted on a slide guide (11) fixed to the base (1).

The roller support frame (3) includes the frame
(3) A slide drive device (4) for slidingly driving the upper rollers (6a) and (6b) is provided. Slide drive device (4)
Handwheel (4) along the roller support frame (3).
The drive shaft (42) with 3) and the screw shaft (41) are rotatably arranged in parallel, the screw shaft (41) is screwed through the support member (31), and the drive shaft (42) and the screw shaft (41) 41) is connected via gears (44) and (45). Turn the handwheel (43) to rotate the screw shaft (4
1) rotates, the support member (31) slides back and forth by the screw thrust, and the tension of the belt (60) can be adjusted.

A roller support frame rotation device (5) is connected to both roller support frames (3). The roller support frame rotating device (5) is provided with a gear box (53) at an intermediate position between the roller support frames (3) and (3) on the base (1), and an output shaft (58) protruding from the box. ) Are connected to screw shafts (57) and (57) through universal joints (55), and the screw shaft (57) is provided on each roller support frame (3) in a block (5
It is screwed to 6) and penetrates it. The output shaft (58) of the gear box (53) is connected to the handwheel (52) via the universal joint (54), the drive shaft (51), etc., and the handwheel (52) is turned to support the roller. flame
(3) The space between (3) can be opened and closed, and the second and third rollers (6a) and (6b) can approach or separate.

The rollers (6), (6a) and (6b) are connected to independent motors (7), (7a) and (7b), respectively. The motor (7) that drives the first roller (6) is mounted on the back surface of the ceiling wall of the base (1).
It is mounted concentrically with the roller (6) via (73).
The motors (7a) and (7b) are attached to the lower surface of the support member (31) that supports the second and third rollers (6a) and (6b) through the attachment base (73), and the rotation shafts ( 71) and the rotating shafts (61) of the rollers (6) (6a) (6b) are connected via a coupling (72).
The mount (73) penetrates a through groove (32) formed in the lower surface of the roller support frame (3) so as to be movable in the longitudinal direction of the groove.

As shown in FIG. 7, each motor (7) (7a) (7b) is connected to a speed setting device capable of individually adjusting the rotation speed. The speed setting device of the embodiment is composed of the inverters A, B, and C separately connected to each motor (7) (7a) (7b), and the common ratio setting box K connected to each inverter. . The ratio setting box K has a built-in ratio setting circuit (not shown) made up of multiple operational amplifiers, and one ratio setting box can perform ratio operation of multiple inverters (use ratio setting). The box is a product number F from Mitsubishi Electric Corporation.
With R-FH, ratio operation of 5 inverters is possible).
The ratio setting box K is provided with a volume (not shown) for independently adjusting the operational amplifier of each circuit, and by adjusting the volume, the motors (7), (7a), and (7b) are individually controlled. The rotation speed can be adjusted.

However, since the rotation speeds of the motors (7), (7a), (7b), and hence the rollers (6), (6a), (6b) can be adjusted individually, the belt tension side of the mandrel (2) can be adjusted. The rotation speed of the roller is adjusted to high speed, and the rotation speed of the roller on the belt supply side is adjusted to low speed, so that the tension on the discharge side and the supply side of the belt (2) with the mandrel (6) sandwiched can be made approximately the same. As a result, the belt is not loosened in the vicinity of the mandrel (2), the paper tape is stably wound around the mandrel, and there is no opening.
It is possible to manufacture rigid and beautiful paper tubes.

Since the rollers (6), (6a) and (6b) are driven by independent motors (7), (7a) and (7b) respectively,
(6) (6a) (6b) is approached and motors (7) (7a) (7b) are deployed,
The rollers (6) (6a) (6b) and the motors (7) (7a) (7b) can be connected by a short and simple transmission path. Therefore, as in the past,
Compared with the long and complicated rotation transmission path by the gear train and spiral shaft (83), the operating noise is quieter, the belt can be run stably, and opening and delamination are prevented as much as possible. Can produce a stiff and beautiful paper tube. Further, since the rotation transmission path can be made short and simple, the number of parts can be greatly reduced, and the labor for processing and assembling parts can be reduced.

In implementing the present invention, each motor (7) (7
Individual rotation speed adjustment of a) and (7b) is not limited to using an inverter and a ratio setting box, and can be performed with a combination of a continuously variable transmission motor, pulse motor, servo motor, and their corresponding control devices. Is. Further, 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 drawings]

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

FIG. 2 is a front view of a paper tube manufacturing apparatus.

FIG. 3 is a cross-sectional view of a mounted state of the motor.

FIG. 4 is a plan view of a conventional example.

FIG. 5 is a front view of a conventional example.

FIG. 6 is a cross-sectional view of another conventional example.

FIG. 7 is a connection system diagram of a motor and an inverter.

FIG. 8 is an explanatory view of a conventional belt tension state near the mandrel.

[Explanation of symbols]

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

Claims (1)

[Claims] 1. Rollers (6) (6a) (6b) are arranged on both sides of the mandrel (2) with the mandrel (2) sandwiched therebetween, and the roller (6) on one side of the mandrel (2) is on a base. Is pivotally supported in a fixed position,
The rollers (6a) (6b) on the other side of the mandrel (2) are pivotally supported by a support member (31) provided on a support frame (3) that pivots on a base so as to be movable back and forth, and the mandrel (2 ), The endless belt (60) is wound around the rollers (6) (6a) (6b), and the paper tape supplied on the mandrel (2) is spirally wound around the mandrel (2) by the orbit of the belt (60). In a paper core manufacturing apparatus for manufacturing a paper core by pushing it downstream while winding, roller support motors (7a) and (7b) are individually provided to the respective support members (31) on the roller support frame (3). The rollers (6a) and (6b) that are mounted and pivotally supported by the respective support members (31) are connected to the roller drive motors (7a) and (7b) on the support members (31), respectively, and the rollers (6) at fixed positions are connected.
Is connected to the motor (7) attached to the base,
(7) (7a) and (7b) are paper tube manufacturing apparatuses connected to a speed setting device capable of individually adjusting the speed.