JPH0669871B2 - 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 paper tube manufacturing apparatus for manufacturing a paper tube having a predetermined length.

[0002]

2. Description of the Related Art As shown in FIGS. 6 and 7, a conventional paper tube manufacturing apparatus has a paper tube forming section (11) on the upstream side of a base (1) and a paper tube cutting section (12) on the downstream side. The paper tube forming portion (11) spirally winds the paper tapes (91) (91) around the mandrel (2) to form the paper tube (9), and the paper tube cutting portion (12) is the mandrel (2). The paper tube (9) is transferred between the mandrel (2) and the inner shaft (3) which penetrates through 2) and projects to the downstream side, and the paper tube is cut by the round cutter (82).

Below the inner shaft (3), an inner shaft is cantilevered by a mandrel (2).
A receiving member (5) is provided to prevent the bending of (3).

The receiving member (5) is provided with two parallel shafts (17) and (17) axially slidably and freely rotatable along the inner shaft (3) on both sides directly below the inner shaft (3). It is deployed and configured, and is connected to a reciprocating slide driving device (88).

Parallel shafts (17) (17) are inner shafts
While supporting (3) and the paper tube fitted in the shaft (3), the paper slides in the downstream side in synchronization with the inner shaft (3), and a plurality of circular cutters press the rotating paper tubes all at once. Cut the paper core.

Upon completion of cutting, the parallel shafts (17) (17)
Slides to the upstream side, and during this time the inner shaft (3)
A paper tube is continuously sent out from the paper tube forming unit (11).

When the parallel shafts (17) (17) return to their original positions, the shafts immediately slide to the downstream side and the above-mentioned operation is repeated, and the shafts are continuously formed in the paper tube forming section (11). The paper tube sent to the paper tube cutting section (12) is cut into set dimensions.

[0008]

When the parallel shafts (17) and (17) slide to the upstream side and return to their original positions after the completion of each cutting, the parallel shafts are fitted to the inner shaft (3). And the parallel shafts (17) and (17) are slid in the opposite direction, and a strong frictional force acts between the paper tube and the parallel shaft, opening the paper tube, that is, spiraling. There was a problem that a gap was created between the tapes wrapped around and the commercial value was lost.

The present invention clarifies a paper tube manufacturing apparatus that solves the above-mentioned problems by orbiting a receiving member that supports an inner shaft and constantly moving the receiving member that is in contact with the paper tube in the sliding direction of the paper tube. Is.

[0010]

According to the paper tube manufacturing apparatus of the present invention, a paper tube (9) is formed by spirally winding a paper tape (91) around a mandrel (2).
The inner tube (3) arranged so as to reciprocate in the axial direction on the extension of the mandrel (2) while forming the
(9) is fitted and passed, and while supporting the inner shaft (3) by the receiving member (5), it slides along the axis of the shaft at the same speed as the inner shaft (3) and in a plane orthogonal to the shaft. Paper tube (9) by rotating circular cutter (82)
In a paper tube manufacturing apparatus that continuously cuts a paper tube of a certain length to cut the paper tube, the receiving member (5) includes an inner shaft (3), a rotating member (51), and an inner shaft.
A large number of receiving rollers (52) supporting (3) are attached at equal intervals with the axis centering in the moving direction, and the orbiting member (51) is rotated at a speed corresponding to the forward speed of the inner shaft (3). The driving device (7) for driving is connected.

[0011]

[Operation and effect] The receiving roller on the orbiting member (51) that orbits the inner shaft (3) and the paper tube (9) fitted to the shaft in synchronization with the feeding speed of the paper tube from the mandrel (2). The receiving member (52) is supported by (52) and the orbiting member (51) orbits so that the receiving roller (52) in contact with the paper tube always moves in the feeding direction of the paper tube (9). The frictional force acting between and is small, and it is possible to prevent the paper tube from opening.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a paper tube forming section (11) is provided on the upstream side of a base (1) and a paper tube cutting section (12) is provided on the downstream side thereof.
The paper tube forming part (11) includes a mandrel (2) horizontally projected from the head (13) on the base (1) to the downstream side, and the mandrel (2).
And a paper tape winding device (4) for winding the paper tape (91) around the paper.

The winding device (4) is of a three-headed type and has one mandrel (2) sandwiching the mandrel (2).
Two pulleys (41), (42) and (43), a total of three, are vertically arranged so as to be located at the vertices of the virtual triangle, and two endless belts (44) are wound around the mandrel (2). (45) to pulley (41) (4
It is stretched over 2), (41) and (43).

The paper tape (91) supplied between the mandrel (2) and the belts (44) and (45) is wound around the mandrel (2) in a spiral shape by the winding of the belt and moves on the mandrel (2). It slips while rotating and is sent to the downstream side.

The paper tube cutting section (12) rotatably and slidably penetrates the shaft core of the mandrel (2) and the head (13) to project an inner shaft (3) projecting to the downstream side, the inner shaft side. It is composed of a cutting device (8) and a receiving member (5) for supporting the inner shaft (3).

The inner shaft (3) has a thin upstream portion that slides in the mandrel (2), and a downstream portion that has a thickness corresponding to the outer diameter of the mandrel (2).

The upstream end of the inner shaft (3) is a spline shaft (30), and the spline shaft (30) is the head (13) and a rotary drive pulley (33) rotatably attached to the head. Is slidably pierced, and the penetrating end is connected to the slide drive transmission rod (32) via a connecting member (35).

The rotary drive pulley (33) is connected to the main motor (14) via the belt (31) and the rotation transmission means (34) provided on the base (1).

The slide drive transmission rod (32) is attached to the head (1
The slide base (83) and the inner shaft (3) are integrally formed by slidably penetrating 3) and arranged parallel to the inner shaft (3), and connecting the downstream end to a slide base (83) described later. To slide.

A cutting device (8) is provided on the side of the inner shaft (3) protruding from the downstream side of the mandrel (2), and an inner shaft receiving member (5) is provided below.

The cutting device (8) has a slide base (83) on the base (1) in the same direction as the inner shaft (3) slides.
And the cutter support shaft (80) is rotatably provided in parallel with the inner shaft (3) on the table.

The inner shaft is attached to the cutter support shaft (80).
Cutter mounting levers (81) at even intervals toward the top of (3)
And project a circular cutter (82) at the tip of each cutter attachment lever (81).

A roller lever is provided at one end of the cutter support shaft (80).
(84) is provided so as to project from the side opposite to the cutter mounting lever (81), and the cam roller (81a) is rotatably supported in the vertical plane at the tip of the lever (84).

A spline shaft (85) is fixedly arranged on the base (1) in parallel with the cutter support shaft (80), and the spline shaft (85) is provided.
A cam (86) is slidably provided in the.

The cam (86) is slidably supported integrally with the slide base (82) by a bracket (89) projecting from the slide base (83), and the roller lever (84) is a spring ( 84a) is biased toward the cam (86) side, and even if the slide base (82) slides, the cam (86) and the cam roller (81)
The contact of a) is maintained.

A cylinder (87) for returning the slide table (82) to the upstream standby position is connected to the slide table (82).

A motor (not shown) is connected to one end of the spline shaft (85) through a chain, and the rotation of the motor causes the cam (82) to rotate integrally with the spline shaft (85), thereby causing the cam lever to move. (84), each cutter mounting lever (81) is swung through the support shaft (80) to press or separate the rotary cutter (82) from the paper tube (9) on the inner shaft (3). . Of course, the cutter mounting lever (81) can be swingably driven by a cylinder (not shown) instead of the cam.

The receiving member (5) is an orbiting member which orbits the inner shaft (3) immediately below the shaft in a vertical plane.
A large number of receiving rollers (52) for supporting the inner shaft (3) are mounted on the (51) at equal intervals with the axial direction of the moving direction, and the orbiting member (51) is provided with the inner shaft (3) of the inner shaft (3). A drive device (7) that is orbitally driven at a speed that matches the forward speed is connected.

The orbiting member (51) of the embodiment is a chain,
Chain sprockets (53) at both ends of the frame (6)
It is stretched endlessly on (53). The frame (6) is formed by connecting appropriate places of the parallel wall plates (61) (61) of FIG. 4 with a plurality of stays (62).

The orbiting member (51) has links (55) connected to both ends of the plate (54) by pivots (52a), and the adjacent plates (5)
Connect the links (55) of 4) with the pivots (52b),
Wheels (52) are attached to (52a) and (52b), and each wheel (52) rolls on a rail (63) provided on the frame (6) on the inner shaft (3) side.

A roller support base (56) is attached to each plate straddling the pivots (52a) (52a) on the plate (54).

A pair of U-shaped levers are provided on the roller support base (56).
(58) (58) are provided so as to be rotatable relative to each other in a plane orthogonal to the center of the support base, that is, a position directly below the inner shaft (3) about the rotation center (59), and each U-shaped lever ( 58) (5
A receiving roller (52) is supported on the inner shaft (3) in parallel with the inner shaft (3). Both ends of the receiving roller (52) are gradually reduced in diameter.

The levers (58) and (58) are pushed up to the roller support base (56) to increase the lever angle, that is, the receiving roller (52) on the lever.
Push-up bolts (50) (50) for adjusting the height position of (52) and the interval between the receiving rollers (52) (52) are screwed together.

The output shaft (70) of the transmission-equipped motor (71) which drives the orbiting member (51) to orbit is connected to the chain sprocket (53) via the chain (72) and also to the first chain (73). ),
The cutting device through the clutch (74) and the second chain (75)
It is also connected to the third chain (76) that drives the slide base (83) of (8).

The third chain (76) and the slide base (83) are connected at one place, and the slide base (83) is moved to the downstream side by the circulation of the third chain (76), and the slide base (83). To return the engine to the upstream side, the clutch (74) is disengaged and the rotation of the motor (71) is not transmitted to the third chain (76), and the return cylinder (87) is returned.
By.

Orbital drive of the orbiting member (51) and slide base (83)
By performing the slide drive on the downstream side of the same with the common motor (71), the orbiting of the orbiting member (51) and the shift of the slide base on the downstream side are synchronized. It is also possible to drive the slide base (83) and the orbiting member (51) to the main motor (14).

The receiving member (5) is supported by an elevating frame (77) arranged on the base (1) so as to be able to ascend and descend, and the height of the elevating frame (77) by the elevating drive motor (78), and thus the receiving roller. The height of (52) can be set optimally.

Then, the paper tape (91) (9) on the mandrel (2)
The paper tube (9) is continuously formed by winding 1) in a spiral shape. The paper tube (9) is transferred from the mandrel (2) to the inner shaft (3) penetrating the mandrel (2) and projecting to the downstream side.

The inner shaft (3) is rotatably supported by the receiving roller (52) on the orbiting member (51), and the orbiting member (51) orbits at the same speed as the feeding speed of the paper tube. There is almost no friction between the roller (52) and the paper tube, and the paper tube smoothly slides on the inner shaft (3) to move.

When the inner tube (3) is covered with the paper tube (9) for a certain length, a clutch (74) for transmitting power to the slide base (83) by a signal from a detector (not shown) arranged in a proper position.
, The slide base (83) moves to the downstream side at the same speed as the orbiting member (51), and the rotary cutter (82) presses the paper tube (9) while the slide base (83) slides. Cut the tube.

As described above, since the slide base (83) and the inner shaft (3) are linked via the rod (32) and move integrally, the slide tube (83) and the inner shaft (3) move in the axial direction of the paper tube (9) and the inner shaft (3). Friction resistance can be suppressed, and even if the rotary cutter (82) comes into contact with the inner shaft (3), both move downstream at the same speed, so that the inner shaft (3) moves axially. No scratches will occur.

When the cutting of the paper tube is completed, the cutter (82) separates from the inner shaft (3), the clutch (74) is disengaged, and at the same time, the slide base (83) and the inner shaft (3) are moved upstream by the cylinder (87). Slide to and return to the original position.
While the inner shaft (3) slides on the upstream side, the paper tube is transferred from the mandrel (2) to the inner shaft (3).

By repeating the above operation, the paper tube of the set length can be continuously manufactured. In the device of the present invention, the inner shaft (3) and the paper tube fitted to the shaft are rotatably supported by the receiving roller (52) on the revolving member (51) that revolves in synchronization with the feeding speed of the paper tube. However, since the receiving roller (52) orbits so as to always move in the paper tube feeding direction, the frictional force acting between the paper tube and the receiving roller (52) is small, and the paper tube is opened. There is nothing to do.

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 side view of a paper tube manufacturing apparatus.

FIG. 2 is a plan view of the above.

FIG. 3 is a side view of a circulating member and a roller.

FIG. 4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a schematic explanatory view of a cutting device.

FIG. 6 is a plan view of a conventional paper tube manufacturing apparatus.

FIG. 7 is a side view of the above.

FIG. 8 is a schematic view of the above cutting device.

[Explanation of symbols]

 (2) Mandrel (3) Inner shaft (5) Receiving member (51) Revolving member (52) Receiving roller (7) Drive device

Claims (1)

[Claims] 1. An inner member that is reciprocally movable in the axial direction as an extension of the mandrel (2) while spirally winding a paper tape (91) around the mandrel (2) to form a paper tube (9). The paper tube (9) is fitted onto the shaft (3) and delivered to the receiving member (5).
While supporting the inner shaft (3) by the circular cutter (8) which slides along the axis of the inner shaft (3) at the same speed as the inner shaft (3) and rotates in a plane orthogonal to the shaft (8).
2) Therefore, in the paper tube manufacturing apparatus that cuts the paper tube (9) and continuously manufactures a paper tube of a certain length, the receiving member (5) is a circulating member (circulating along the inner shaft (3). 51) on,
A number of receiving rollers (52) that support the inner shaft (3) are attached at equal intervals with the axis centering in the moving direction, and a speed corresponding to the advancing speed of the inner shaft (3) on the orbiting member (51). A paper tube manufacturing device in which a drive device (7) that is orbitally driven is connected to each other.