JPH0699091B2 - Paper core cutting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for cutting a fixed length paper tube at a predetermined pitch.

[0002]

2. Description of the Related Art A cutting device of this type has a paper tube fitted with a cutting core, supported by rollers for receiving the paper tube, and rotating a cutter shaft having round blades at a predetermined pitch on the shaft. Press to cut the paper tube into multiple pieces at once. The cutting core does not move in the axial direction, intermittently moves along the cutting core circulation passage, fits the paper core into the cutting core at the first stop position, cuts at the next stop position, and cuts at the third stop position. Remove the paper tube that was cut from.

[0003]

As described above, since the cutting core does not move in the axial direction, the paper tube must be inserted into and removed from the cutting core by a worker's manual work or an automatic insertion device. In the case of manual work, since the clearance between the paper tube and the cutting core is small, the fitting is troublesome and inefficient, and there is a risk that the operator's hand is caught in the cutter shaft. When the paper tube is inserted into or removed from the cutting core by the automatic insertion device, the end of the paper tube is hooked on the slide claw, which causes a problem of damaging the end of the paper tube.

According to the present invention, the cutting core is slid into the stopped paper tube and fitted in the paper tube, and in this state, the cutting core is conveyed to the cutting position and the discharging position, and the cutting core is pulled out at the discharging position to remove the cut paper tube. By taking out, a paper tube cutting device which can solve the above-mentioned problems is clarified.

[0005]

A paper tube cutting device according to the present invention comprises a paper core P fitted with a cutting core (9) rotatably supported by a receiving roller (6) and a predetermined pitch on a shaft body (51). In a paper core cutting device that presses a rotary cutter shaft (5) equipped with a round blade (52) on the paper core to cut the paper core at a predetermined pitch, a stocker (2) for aligning and mounting the paper core in parallel The cutting core (9) is slidably provided on the side of the tip of the stocker (2) so as to be orthogonal to the transition path of the paper tube, and the cutting core (9) is located at a position corresponding to the tip of the stocker (2). Cutting core insertion station S ₁ , next cutting station S ₂ , next cutting core extraction station S ₃
The cutting core intermittent rotation transfer device (3) that is sequentially stopped at the cutting core insertion station S ₁ and the cutting core insertion station S ₁ are arranged at the corresponding positions, and the cutting core (9) is slid in the axial direction to insert the paper on the cutting core insertion station S _1. Cutting core insertion drive device for inserting into pipe (4)
And a cutter shaft (5) and a receiving roller (6) arranged so as to be able to approach and separate with the cutting core (9) of the cutting station S ₂ interposed therebetween.
And the cutting core extracting station S ₃ are provided at corresponding positions, and the cutting core (9) is slid in the axial direction to extract the cutting core (9) from the paper tube on the cutting core inserting station S ₁ It is composed of a drive unit (40).

[0006]

[Operation and effect] As shown in FIG.
When reaching the leading edge of (2), cutting core insertion station S ₁
The cutting core (9) located above is slid to the paper tube side by the cutting core insertion drive device (4), and the cutting core (9) is inserted into the paper tube. When the cutting core (9) is cantilevered by the rotating plate (31) and the paper tube is fitted, the cutting plate (9) is rotated by the rotating plate (31), as shown in FIG.
Moves to the cutting station S ₂ as shown in.

At the cutting station S ₂ , the cutter shaft
(5) and the receiving roller (6) stand by a little away from the transition path of the cutting core (9), and the cutting shaft (9) fitted with the paper tube is stopped at the cutting station S ₂ at the timing when the cutter shaft ( 5)
And the receiving roller (6) contact each other with the paper core,
The paper core on the cutting core (9) is cut while being supported by (6).
When the cutting of the paper core is completed, the cutter shaft (5) and the receiving roller
(6) is separated from the paper core, and the cutting core is fitted with the cut paper core (9)
Moves to the cutting core extracting station S ₃ .

In the core extracting station S ₃ , the core extracting drive unit (40) pulls out the core 9 from the paper tube and ejects the cut paper tube. The above work is repeated in order during the stop time during which the cutting core (9) is intermittently transferred by the cutting core intermittent rotation transfer device (3), so that the paper tube of a fixed length can be efficiently cut into a predetermined pitch.

In the present invention, the cutting core (9) is moved in the axial direction without moving the paper tube in the axial direction and is inserted into or removed from the paper tube. It is possible to prevent the end of the paper tube from being scratched by hooking the end on the slide claw.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a cutting device viewed from the front side, FIG. 2 is a perspective view of a cutting core intermittent rotation transfer device (3) described below from the back side, and FIG. 7 is a rear view of the cutting device. Right part, Figure 8
Is a left side portion of the rear view of the cutting device, FIG. 9 is a left side portion of the plan view of the cutting device, and FIG. 10 is a right side portion of the plan view of the cutting device. In FIG. 1, a stocker (2) is provided on the front side of the base (1) on the left side, and the stocker tilts a plate (20) having a width corresponding to the length of the standard length paper tube toward the front so that the left end A guide plate (21) is provided at the edge and a fall prevention plate (23) is provided at the front end.

The front end position of the stocker (2) is a cutting core insertion station S ₁ , a cutting station S _{2 is located} diagonally above the cutting core insertion station S ₁ , and a cutting core removal is shown diagonally below the cutting station S ₂ in front of the cutting station S ₂ . Station S ₃
Are provided, and each station S ₁ , S ₂ , S ₃ is located at the top of a virtual equilateral triangle.

In FIG. 1, a cutting core intermittent rotation transfer device (3) is arranged on the right side of a base (1). The cutting core intermittent rotation transfer device (3) is provided with a rotary shaft (32) parallel to the transition path of the paper tube on the base (1), and a pair of rotary plates (30) (31) is mounted on the shaft. Axis (3
2) Installed so that it can rotate together with. The rotating shaft (32) is connected to the intermittent rotation driving device (12) and rotates intermittently by 120 °. One rotating plate (31) is close to the paper tube transition path, and both rotating plates (3
The distance between 0) and (31) is slightly shorter than the total length of the cutting core (9). Through holes (34) are formed on the outer circumferences of the two rotary plates (30) and (31) so that the phases thereof are aligned with each other and corresponding to the intervals between the stations S ₁ , S ₂ and S ₃ . A support cylinder (35) is detachably provided on the rotary plate (30) on the paper tube transition path side, and a through hole (34) is formed inside the support cylinder (35).

Both ends of the cutting core (9) are movably and rotatably fitted in and supported by the through holes (34) and (34) of the rotary plates (30) and (31). Prepare support tubes (35) with different inner diameters, and
Replace the cutting core (9) and the support tube (35) according to the inner diameter of the. As shown in Fig. 3, a retaining collar is attached to the outer end of the cutting core (9).
(92) and (93) are provided in a protruding manner, and a circumferential groove (91) is provided between the collars (92) and (93). As shown in FIGS. 1 and 2, a gutter-shaped guide that is open to the outside is provided between the rotary plates (30) and (31) so as to surround the slide transition path of the cutting core (9) and cut the paper tube as described later. At times, when the cutting core (9) is supported by the rotary plate (31) in a cantilevered manner and rotates following the cutting core (9), the precession of the cutting core (9) is defined.

A cutting core insertion driving device (4) is provided corresponding to the position of the cutting core insertion station S ₁ . The cutting core insertion drive device (4) has a guide rail (41) arranged on the base (1) between the rotating plates (30) and (31) in parallel with the cutting core (9), and The slide member (42) is slidably engaged, and the cylinder device (44) is connected to the slide member (42). The slide member (42) has a circumferential groove (9
It has a claw piece (43) that hooks on 1).

On the base (1), there is provided a core removing operation unit (40) corresponding to the core extracting station S ₃ . The cutting core extraction drive device (40) has the same structure as the cutting core insertion drive device (4), and the slide members (42) of both devices are provided.
The movement of (42a) is reversed. Cutting core extraction station S ₃
A chute (11) for discharging and guiding the cut paper tube is provided in the.

A cutting core (9) above the cutting station S _2.
A cutter shaft (5) is arranged so as to be rotatable and movable up and down in parallel with. The cutter shaft (5) is formed by providing round blades (52) on the shaft body (51) at a predetermined pitch. A rotary drive device is connected to the cutter shaft (5), and both ends thereof are connected to the lifting cylinder devices (53) (53).

A cutting core (9) below the cutting station S _2.
A pair of receiving rollers (6) (6) are arranged so as to be able to move up and down in parallel with. Both ends of each receiving roller (6) are rotatably supported by a bracket (75) and the shaft is linked to a rotary drive (54) at the same peripheral speed as the circular blade (52) of the cutter shaft (5). ) Rotates in the opposite direction.

As shown in FIG. 11, the receiving roller (6)
(6) is connected to a pair of approach amount adjusting devices (7) and (7) for adjusting the approach amount to the cutting core (9) on the cutting station S ₂ . The approach amount adjusting device (7) is a double rod type cylinder device on the base (1) at a position below both ends of the cutter shaft (5).
The cylinder (72) of (71) is fixed vertically, and the receiving roller supporting bracket (75) is attached to the rod (73) protruding upward from the cylinder (72).

A drive cylinder (81) is vertically arranged so as to be rotatable at a fixed position below the double rod type cylinder device (71), and an inner screw cylinder (86) is fixed below the drive cylinder (81). Deploy. The upper part of the tubular body (8) is fitted into the drive barrel (81) via the slide key (84) so as to be integrally rotatable with the drive barrel (81) and slidable in the axial direction,
The square screw surface (85) on the outer periphery of the cylindrical body (8) is screwed into the inner screw cylinder (86). The rod projecting downward of the double rod type cylinder device (71) is fitted in the tubular body (8) so as to be vertically movable, and
Contact pieces (76) (89) are provided on the upper ends of the rods and the lower ends of the rods to prevent the rods from coming off. The drive cylinder (81)
A worm gear (82) is formed on the outer periphery of the worm gear, and a worm shaft (83) is screwed onto the worm gear (82).

The inner threaded tube (86) is axially cut open at one location, and the fastening pieces (87) (87a) are projectingly provided at both ends of the opening, and the screw shaft is attached to both fastening pieces (87) (87a). (88) is inserted. Screw shaft (8
8) penetrates one tightening piece (87) with a margin and is screwed to the other tightening piece (87a). A flange (88a) that presses the tightening piece (87) that has penetrated the screw shaft (88) with a margin.
Is projected. Inner threaded tube (86) when the screw shaft (88) is rotated
Tightens to clamp the cylinder (8). Screw shaft (88) above
The worm shaft (83) penetrates the approach amount adjusting devices (7) (7) on the left and right sides, respectively, and operates both approach amount adjusting devices (7) (7) at the same time. (88) The end of (88) projects from the end of the base (1) and is rotated by a rotating tool such as a handle or a spanner.

When the worm shaft (83) is rotated, the worm shaft (83) is rotated.
The cylindrical body (8) linked to the (83) via the slide key (84) rotates. Since the lower part of the tubular body (8) is screwed into the fixed inner threaded tube (86), a screw thrust force acts on the tubular body (8), the state of FIG. 12 descends to the state of FIG. 13, and the rod ( 73) The distance between the contact piece (76) at the lower end and the contact piece (89) of the tubular body (8), that is, the ascending stroke of the rod (73) decreases from Sa to Sb. That is, the raised position of the receiving rollers 6 and 6 is lowered. When the worm (83) is rotated in the opposite direction, the lifting stroke of the rod increases and the lift position of the receiving roller (6) increases. In this way, depending on the outer diameter and thickness of the paper core, the receiving roller for cutting the paper core
(6) The height of (6) can be adjusted. Receiving roller (6) when cutting
When there is a risk that the receiving roller (6) will be bent by the pressing force acting on the receiving roller (6), the receiving roller (6) is placed below the receiving roller (6).
Auxiliary rollers (not shown) for supporting both brackets (75) (75)
It is also possible to support it by straddling it. Optimally set the rising height position of the receiving roller (6), rotate the screw shaft (88),
To prevent rotation of the cylinder (8) due to vibration or the like.

However, as shown in FIG. 3, the stocker (2)
Among the paper tubes P aligned above, the cutting core (9) located on the cutting core insertion station S ₁ is slid by the cutting core insertion drive device (4) with respect to the most advanced paper tube, and is moved to the paper tube. Is inserted. The cutting core (9) is supported by the rotating plate (31) in a cantilevered manner, and with the paper tube fitted therein, the rotating plate (31) is rotated to
As shown in FIG. 5, the cutting station S _{2 is} entered.

At the cutting station S ₂ , the rotary cutter shaft (5) and the receiving roller (6) approach each other with the cutting core (9) interposed therebetween,
The paper tube on the cutting core (9) is cut while being supported by the receiving roller (6). The receiving rollers (6) (6) are forcibly driven to rotate to support the paper tube while frictionally rotating the paper tube, and the cutting core (9) fitted in the paper tube is freely rotatable on the rotating plate (31). Since it is supported, there is almost no slip between the paper tube and the receiving roller (6) and between the paper tube and the cutting core (9), and the paper tube can be cut smoothly.
When the cutting of the paper core is completed, the cutter shaft (5) and the receiving roller
(6) is separated from the paper core, and the cutting core is fitted with the cut paper core (9)
Moves to the cutting core extracting station S ₃ .

In the core extracting station S ₃ , the core extracting drive unit (40) pulls out the core (9) from the paper tube, and the cut paper tube slides on the chute (11) and is discharged. The above operation is repeated in order during the stop time during which the cutting core (9) is intermittently transferred by the cutting core intermittent rotation transfer device (3),
It is possible to efficiently cut a fixed length paper tube into a predetermined pitch.
In the present invention, the cutting core (9) is moved in the axial direction without moving the paper tube in the axial direction to be inserted into or removed from the paper tube. It is possible to eliminate the damage to the end of the paper tube caused by hooking on the slide claw. 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 perspective view of a cutting device as viewed from the front side.

FIG. 2 is a perspective view of the cutting core intermittent rotation transfer device as viewed from the back side.

FIG. 3 is a schematic explanatory view of a core bar intermittent rotation transfer device before insertion of a cutting core.

FIG. 4 is a side view showing a state of a cutter shaft and a receiving roller during cutting.

FIG. 5 is a schematic explanatory view of a core bar intermittent rotation transfer device when a cutting core is inserted.

FIG. 6 is a side view showing a state of a cutter shaft and a receiving roller during standby.

FIG. 7 is a rear view of the cutting device on the side of a core removing station.

FIG. 8 is a rear view of the cutting core intermittent rotation transfer device.

FIG. 9 is a plan view of a cutting station unit.

FIG. 10 is a plan view of a cutting core intermittent rotation transfer device.

FIG. 11 is a cross-sectional view of the approaching amount adjusting device.

FIG. 12 is a schematic explanatory diagram of an approaching amount adjusting device.

FIG. 13 is an explanatory diagram for adjusting the stroke of the rod of the approaching amount adjusting device to be short.

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

[Explanation of symbols]

 (2) Stocker (3) Intermittent rotation transfer device of cutting core (31) Rotating shaft (4) Cutting core insertion drive device (5) Cutter shaft (6) Receiving roller (7) Approach amount adjusting device (9) Cutting core

Claims (2)

[Claims] 1. A roller for receiving a paper tube P fitted with a cutting core (9).
A rotary cutter shaft (5), which is rotatably supported by (6) and has a circular blade (52) at a predetermined pitch on the shaft body (51), presses the paper tube to cut the paper tube at a predetermined pitch. In a paper core cutting device, a stocker (2) for aligning and mounting paper cores parallel to each other, and a cutting core (9) slidably arranged at the tip side of the stocker (2) so as to be orthogonal to the transition path of the paper cores. Then, the cutting core intermittent stop for stopping the cutting core (9) in order at the cutting core insertion station S ₁ , the next cutting station S ₂ , and the next cutting core extraction station S ₃ at positions corresponding to the tip of the stocker (2). The rotary transfer device (3) and the cutting core insertion station S ₁ are arranged at corresponding positions,
Cutting core insertion drive device (4) for sliding the cutting core (9) in the axial direction and inserting it into the paper core on the cutting core insertion station S _1.
And the cutter shaft (5) and the receiving roller (6) which are arranged so as to be able to approach and separate with the cutting core (9) of the cutting station S ₂ interposed therebetween, and the cutting core extraction station S ₃ is arranged at the corresponding position. A paper core cutting device including a core extracting drive device (40) for axially sliding the core (9) to extract the core (9) from the core on the core inserting station S ₁ . 2. The receiving roller (6) is a cutting station S ₂
The proximity adjusting device (7) is connected to the upper cutting core (9), and the proximity adjusting device (7) mounts the cylinder (72) of the double rod type cylinder device (71) on the base (1). One end of the rod (73) of the cylinder device (71) is rotatably and axially movably fitted to the cylinder body (8) that is fixed and is connected to the rotation device (80) and moves by screw thrust. 8) and the rod (73) are in contact with each other to form a hitting piece (76) (89) for preventing the rod from slipping out, and the other end of the rod is provided with a bracket (75) and a receiving roller.
The paper tube cutting device according to claim 1, which supports (6) and regulates an approaching position of the receiving roller (6) with respect to the cutting core (9) on the cutting station S ₂ by the moving position of the cylindrical body (8).