JPH0751334B2 - Corrugated paper processing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated board processing machine for making cuts and creases in a corrugated board base paper in order to obtain corrugated board.

[0002]

2. Description of the Related Art Conventionally, a holder 3 having a ring-shaped processing tool 2 such as a score cutter for making a score in a corrugated cardboard base and a crease holder for making a crease in making a score or a crease in a corrugated cardboard base paper. Was used on the shaft 4. In order to support various types of products, a plurality of holders 3 are attached to the shaft 4
It is slidable with respect to, and can be fixed at any position by the screw tool 30. That is, as shown in FIG. 15, the screw tool 30 is screwed into each holder 3, the screw tool 30 is tightened, and the contact member 31 is attached to the shaft 4 by the tip of the screw tool 30.
Each holder 3 can be fixed at any position in the length direction of the shaft 4 by pressing it against the outer surface of the shaft 4. Therefore, when the intended type of corrugated board to be processed changes, it is necessary to change the positional relationship of each holder 3 to a position corresponding to this.
Loosen 0 and slide each holder 3 to the desired position,
The screw tools 30 of the holders 3 are respectively tightened again to fix the holders 3 to the shaft 4.

[0003]

However, in the above-mentioned conventional example, when the positions of the plurality of holders 3 are changed,
It is necessary to loosen the screw tool 30 for each holder 3, slide it, and then tighten the screw tool 30 of each holder 3 again. It is extremely complicated work to loosen or tighten the plurality of screw tools 30. There was a problem that became.

The present invention has been made in view of the problems of the above-mentioned conventional example, and an object thereof is to slide a plurality of holders to arbitrary positions of a shaft and simultaneously fix them at arbitrary positions. Yes, there is no need to loosen or tighten the screws for each holder like in the past.
It is to provide a corrugated board processing machine that can simplify the work.

[0005]

In order to solve the problems of the above-mentioned conventional examples and to achieve the object of the present invention, a corrugated board processing machine of the present invention is provided with a notch for making a notch 1a in a corrugated cardboard base paper 1. A plurality of holders 3 each having a ring-shaped processing tool 2 such as a cutter 2a and a crease inserting tool 2b for inserting a fold 1b are slidably fitted on a shaft 4, and a groove 5 is provided in the longitudinal direction of the shaft 4. Air in the groove 5
The pressing body 9 is placed outside the tube 6 and the pressing body 9 made of an elastic body.
And the pressing body 9 is arranged so as to overlap with each other so as to be located on the side.
Can be freely slid in the groove 5 from the groove back side to the opening side.
Then, a part of the inner surface of the holder 3 is slidable in the groove 5.
The key 10 to be fitted is projected and the groove 5 of the key 10 is provided.
The uneven portion 27 is provided on the surface facing the inside to expand the air tube 6.
In this state, the key 10 is pressed and fixed via the pressing body 9.
Fix the holder 3 at any position on the shaft 4
Freely, with the key 10 on the inner surface of the holder 3 protruding
It is characterized in that a concave portion 11 for balancing is formed on the opposite surface .

[0006]

[0007]

[0008]

Function A plurality of holders 3 each having a ring-shaped processing tool 2 such as a score cutter 2a for inserting a score 1a into a corrugated cardboard paper 1 and a fold insert 2b for inserting a fold 1b are slidably mounted on a shaft 4. Fitting, providing a groove 5 in the longitudinal direction of the shaft 4, and incorporating an inflatable / contractible air tube 6 in the groove 5, so that the holder 3 can be fixed at any position on the shaft 4 when the air tube 6 is inflated. Thus, when the air tube 6 is in the contracted state, all of the plurality of holders 3 are slidable with respect to the shaft 4, and in this state, the plurality of holders 3 are slidable depending on the positions of the cuts 1a and the folds 1b on the corrugated cardboard paper 1. The holders 3 are slid so as to have desired positions and intervals, and when the positioning is determined, the air tube 6 is inflated to move the plurality of holders 3 It is intended to fix in the desired position of the shaft 4 by the pressing force due to the expansion of Achubu 6.

Further, a groove 5 is provided in the longitudinal direction of the shaft 4, the air tube 6 and the pressing body 9 are arranged in the groove 5 so that the pressing body 9 is located outside, and the pressing body 9 is formed in the groove. 5, a key 10 that is slidable from the groove back side toward the opening side and is slidably fitted in the groove 5 is provided on a part of the inner surface of the holder 3, and when the air tube 6 is inflated, the pressing body 9 is pressed. By pressing and fixing the key 10 via the key 10, when the holder 3 is moved along the shaft 4, the key 10 fitted in the groove 5 can be used as a guide to smoothly slide and the holder 3 can be slid in the circumferential direction of the shaft 4. Can be slid with the circumferential direction of the air tube at a fixed position, and when the air tube 6 is inflated, the key 10 is pressed through the pressing body 9 so that the air tube 6
The key 10 does not directly cut into the air tube 6
It will not be broken by the bite of. Further ho
Of the key 10 protruding from the rudder 3 into the groove 5 of the shaft 4.
The uneven portion 27 is provided on the surface facing the groove 5 so that the air tube 6
In the expanded state, the key is pressed and fixed through the elastic pressing member 9.
By doing so, when the air tube 6 is inflated
The pressing body 9 of the body is made to bite into the uneven portion 27 of the key 10.
Can be closely attached so that the one-layer holder 3 is in the axial direction.
It can be securely fixed so that it does not move to. Then, a key 10 that is slidably fitted into the groove 5 is provided on a part of the inner surface of the holder 3, and a recess for balancing is provided on the surface of the inner surface of the holder 3 opposite to the side on which the key 10 is provided. By forming 11, when the plurality of holders 3 are fitted on the shaft 4 having the groove 5, the center of gravity of the shaft 4 is located on the opposite side of the groove 5 from the center of the shaft 4 by the amount of the groove 5. Although it shifts, it becomes possible to balance the whole body by the concave portion 11 of the holder 3 and to adjust the center of gravity of the whole body to approximately the center of the shaft 4.

[0010]

EXAMPLES The present invention will be described in detail below based on examples. The corrugated paper board processing machine A as a whole is as shown in FIGS. 3, 4 and 5. That is, a scoring device 13 and a scoring device 14 for making the nicks 1a in the corrugated cardboard base paper 1 are arranged in front of the table 12. The scoring device 13 is composed of a pair of upper and lower shafts 4 and a plurality of holders 3 to which a scoring cutter 2a for scoring the corrugated cardboard base paper 1 fitted on the shafts 4 is attached. The crease inserter 14 is composed of a pair of upper and lower shafts 4 and a plurality of holders 3 each having a fold insert 2b for inserting the folds 1b into the corrugated cardboard base paper 1 fitted on the shafts 4. The container 2b is composed of a male mold 15 having an annular convex portion on the outer periphery and a female mold 16 having an annular concave portion on the outer periphery (see FIG. 13).

Here, a score a is formed in the corrugated cardboard base paper 1 described above.
Ring-shaped processing tool 2 such as a scoring cutter 2a for inserting a fold and a crease inserting tool 2b for inserting a fold 1b
Since all the holders 3 having the above are similarly attached to the shaft 4, the attachment of the holder 3 will be described below. That is, as shown in FIG. 1, FIG. 2, FIG. 6, FIG. 7, and FIG. 8, the shaft 4 is provided with a groove 5 over substantially the entire length in the longitudinal direction excluding both ends. Is a narrow portion 17 having a narrow width, and the deep portion of the groove is a wide portion 18 having a wide width. Groove 5 provided on shaft 4
Inside the groove 5, the air tube 6 as shown in FIG. 9 and the pressing body 9 as shown in FIG. 10 are arranged so as to overlap each other so that the pressing body 9 is located outside. It is slidable from the groove back side toward the opening side. The air tube 6 is arranged in the wide portion 18 of the groove 5, the pressing body 9 has a convex cross section, the lower portion is located in the wide portion 18, and the upper portion is in the narrow portion 17. It is arranged so as not to fall off from the groove 5 even if the pressing body 9 is slidable from the groove back side toward the opening side. The pressing body 9 is formed of an elastic body such as rubber or synthetic resin such as urethane.

The holder 3 has an annular shape as shown in FIGS. 11 and 12, and a key storage recess 8 is provided in a part of the inner surface thereof, and a key 10 is fitted into the key storage recess 8 and screwed. It is attached by a tool 19. A key 10 that is slidably fitted in the groove 5 is provided on a part of the inner surface of the holder 3 so that the key 10 on the inner surface of the holder 3 can be balanced on the opposite side. The recess 11 is provided. The holder 3 is provided with a screw hole 20 for attaching a ring-shaped processing tool 2 such as a score cutter 2a for making a score in the corrugated cardboard paper 1 and a fold score tool 2b for making a score, and a screw tool 20a. Thus, the ring-shaped processing tool 2 such as the score cutter 2a and the crease holder 2b can be attached. Here, the fold insertion tool 2b for inserting the fold 1b into the corrugated cardboard base paper 1 is a separate member from the holder 3 and may be attached to the holder 3 with a screw tool, or may be formed integrally with the holder 3. is there.

A cut line 1a is formed in the corrugated cardboard base paper 1 having the above structure.
Ring-shaped processing tool 2 such as a scoring cutter 2a for inserting a fold and a crease inserting tool 2b for inserting a fold 1b
A plurality of holders 3 having the above are slidably fitted on the shaft 4. Here, the key 10 protruding to the inner surface of each holder 3 is slidably fitted in the groove 5.

As shown in FIGS. 7 and 8, a groove 5 opens laterally near one end of the shaft 4, and an end of the air tube 6 projects from the lateral opening 21.
An air hole 22 is bored at the end of the shaft 4, and one end of the air hole 22 and the end of the air tube 6 protruding from the side opening 21 are connected by an air hose 23 for communication. A rotary joint 24 is connected to the other end of the air hole 22, an air hose 25 is connected to the rotary joint 24, and an air supply device (not shown) is connected to the air hose 25. Air is supplied from the air supply device to expand the air tube 6,
The air in the air tube 6 is removed. Reference numeral 26 in the drawing denotes a bearing portion of the shaft 4.

Notch insertion device 13 and crease insertion device 14
Are designed to rotate in synchronization with a common motor. In order to obtain the desired corrugated board by making the cuts 1a and the folds 1b in the corrugated board 1 and the desired corrugated board, pass the corrugated board 1 from the table 12 of the processing machine A through the scoring device 13 and the crease making device 14 in this order. Then, the cut 1a is made in the corrugated cardboard base paper 1 and then the fold 1b is made (FIG. 14 shows an example in which the cut 1a and the fold 1b are made in the corrugated board base paper 1). That is, as the pair of shafts 4 of the scoring device 13 rotate, the scoring cutter 2a provided in the holder 3 attached to the shaft 4 makes the scoring 1a in the corrugated cardboard base paper 1, and then the scoring device 14 As the shaft 4 rotates, the fold line 1b is formed in the corrugated cardboard base paper 1 by the fold line cutter 2b provided in the holder 3 attached to the shaft 4.

Here, the position and number of the cuts 1a and the folds 1b to be made on the corrugated cardboard base paper 1 differ depending on the type of corrugated board to be processed, but when the type changes, the air supplied to the air tube 6 is changed. The air tube 6 is pulled out to contract, the fixing of the plurality of holders 3 to the shaft 4 is released at the same time, and in this state, the plurality of holders 3 are slid with respect to the shaft 4 to correspond to the type of corrugated board to be processed. The holder 3 is arranged at each position. In this way, after the plurality of holders 3 are slid and positioned, air is supplied to the air tube 6 to expand it, and the expansion of the air tube 6 causes the pressing body 9 to move from the groove inner side toward the opening side in the groove 5. By sliding and pressing the pressing body 9 against the key 10 projecting on the inner surface of the holder 3, the plurality of holders 3 are simultaneously fixed to the target positions on the shaft 4. Here, the end surface of the key 10 is pressed so as to bite into the elastic pressing body 9,
The holder 3 is fixed so as not to move in the axial direction of the shaft 4, and in this case, an uneven portion 27 is further provided on the surface facing the groove 5 of the key 10 as shown in FIG. 2B.
Therefore, the holder 3 is prevented from further moving in the axial direction of the shaft 4 and is securely fixed.

In this way, a plurality of holders 3 slidably fitted on the shaft 4 are fixed to the shaft 4,
Alternatively, when releasing the fixing, the fixing and releasing of the plurality of holders 3 to the shaft 4 can be performed at the same time by a simple means of expanding and contracting the air tube 6, and as a result, the plurality of holders 3 can be fixed and released. It can be done in a short time with simple operation.

By the way, when a plurality of holders 3 are fitted on the shaft 4 having the groove 5 formed as described above, the center of gravity of the shaft 4 is located on the opposite side of the groove 5 from the center of the shaft 4 by the amount of the groove 5 provided. In the present invention, however, since the concave portion 11 for balancing is formed on the inner surface of the holder 3 on the side opposite to the side where the key 10 is provided, the concave portion 11 of the holder 3 is formed into the groove 5 It is located on the opposite side to the above, and as a result, the overall balance can be achieved and the center of gravity of the whole can be aligned with the approximate center of the shaft 4.

[0019]

According to the present invention, as described above, a plurality of holders each having a ring-shaped processing tool such as a score cutter for making a score in the corrugated cardboard paper and a crease inserter for making a crease are provided. The shaft is slidably fitted into the shaft, a groove is provided in the longitudinal direction of the shaft, and an expandable and contractible air tube is installed inside the groove.The holder can be fixed to any position on the shaft when the air tube is inflated. By shrinking the air tube, you can release the fixing of multiple holders to the shaft at the same time and slide it against the shaft, and easily install multiple holders according to the position of the cut or fold on the corrugated cardboard. Each can be slid to the desired position and spacing, and by expanding the air tube, multiple Those that can be easily and securely fixed to the desired position of the shaft by the pressing force due to expansion of the air tube Ruda.

Further, a groove is provided in the longitudinal direction of the shaft, the air tube and the pressing body are arranged in the groove so that the pressing body is located outside, and the pressing body is opened in the groove from the groove back side. It is slidable toward the side, and a key that is slidably fitted in the groove is protrudingly provided on a part of the inner surface of the holder, and the key is pressed and fixed via the pressing body in the expanded state of the air tube, so the holder is mounted on the shaft. When moving along, the key that fits in the groove can be used as a guide to slide smoothly, and the holder can slide with the circumferential direction of the holder at a fixed position relative to the circumferential direction of the shaft. It can slide in a precise positional relationship with the shaft, and by pressing the key via the pressing body when the air tube is expanded. , There is the key does not bite directly to the air tube, in which air tube is not torn by the biting of the key. From the holder
Concavo-convex part on the surface facing the groove of the key protruding in the groove of the shaft
Provided with an elastic body pressing body in the expanded state of the air tube
Since the key was pressed and fixed by pressing the
When expanded, the elastic pressing body bites into the key's irregularities.
It can be attached as if it were
The layer holder can be securely fixed so that it does not move in the axial direction.
It is something.

Further, a key which is slidably fitted in the groove is projected on a part of the inner surface of the holder, and a concave portion for balancing is formed on the surface of the inner surface of the holder opposite to the projected key. By doing so, when multiple holders are fitted on the grooved shaft, the center of gravity of the shaft shifts to the side opposite to the groove from the center of the shaft by the amount of the groove, but the presence of the concave part on the holder As a result, the overall center of gravity can be balanced and the center of gravity of the whole can be adjusted to substantially the center of the shaft. As a result, runout during rotation of the shaft can be prevented. Also at this time the holder
By providing a recess in the shaft,
Balance without sacrificing
(To balance the shaft, balun it
A simple means is to provide a recess or the like for removing the space.
However, if a shaft is provided with a recess, etc.,
There is a problem in that the strength of the fiber is reduced. )
It

[Brief description of drawings]

FIG. 1 is an enlarged front sectional view of an essential part of the present invention.

FIG. 2 (a) is an enlarged side sectional view of an essential part of the above,
(B) is an enlarged sectional view of the key.

FIG. 3 is a schematic perspective view showing the whole of the above.

FIG. 4 is a schematic perspective view from the opposite side showing the whole of the above.

FIG. 5 is a schematic front view showing the whole of the above.

FIG. 6 is a sectional view of the shaft of the above.

FIG. 7 is a cross-sectional view of an end portion of the above shaft.

8 is a sectional view taken along line XX of FIG. 7 above.

FIG. 9 shows an air tube used in the same as above, (a) is a sectional view with a part omitted, and (b) is a front view.

FIG. 10 shows a pressing body used in the same as above, (a) is a side view with a part omitted, and (b) is a sectional view.

FIG. 11 shows a holder having a notch cutter used in the same as above, (a) is a front view, and (b) is a sectional view.

FIG. 12 shows a holder having a crease insert used in the same as above, (a) is a front view, and (b) is a cross-sectional view of essential parts.

FIG. 13 shows a crease insert used in the same as above, (a) is a sectional view of a male mold of the fold insert, and (b) is a sectional view of a female mold of the crease insert.

FIG. 14 is a plan view showing an example in which a cut line and a fold line are formed in the corrugated cardboard base paper.

FIG. 15 is a cross-sectional view showing attachment of a holder to a shaft of a conventional example.

[Explanation of symbols]

 1 Corrugated cardboard 1a Cut 1b Crease 2 Processing tool 2a Cut cutter 2b Crease insert 3 Holder 4 Shaft 5 Groove 6 Air tube 8 Shaft 9 Pressing body 10 Key 11 Recess

Claims (1)

[Claims] 1. A plurality of holders each having a ring-shaped processing tool such as a notch cutter for making a score in a corrugated cardboard and a crease making tool for making a crease are slidably fitted on the shaft, and the length of the shaft is extended. Groove in the direction, and the air tube and the pressing body made of an elastic body inside the groove.
It is common to arrange the pressing bodies so that they are located outside.
Slide the pressing body in the groove from the groove back side to the opening side.
It can be slid into the groove on a part of the inner surface of the holder.
A surface that protrudes the key to be fitted and faces the groove of the key
Concavo-convex part is provided on the air tube to push it when the air tube is inflated
Press the key through the body to secure the holder in place.
It can be freely fixed to any position on the shaft and
For balancing on the side opposite to the side with the key protruding
A corrugated paper board processing machine characterized by forming recesses .