JPH0771796B2 - Tool positioning method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a tool positioning method for cutting a sheet such as a corrugated cardboard sheet into a predetermined width and for forming ruled lines.

[Conventional technology]

In corrugated machines and the like, in order to cut a sheet such as a corrugated sheet into a predetermined width and to put a predetermined number of ruled lines in it, a plurality of sets of slitter scorers are installed downstream of the corrugated sheet manufacturing apparatus along the flow. Is provided. In this slitter / scorer, generally, a tool such as a rotary blade or ruled line roller that is movably provided in the axial direction of a rotary shaft arranged in a direction orthogonal to the running direction of the sheet is attached to the screw shaft provided in parallel with the rotary shaft. A tool positioning method is employed in which a tool is engaged through a support member that is rotatably supported, and the rotation of the screw shaft moves the tool on the rotary shaft to position the tool at a predetermined position.

Conventional examples of such a slitter / scorer are shown in FIGS. 6 and 7. Two sets of slitter scorers 1, 1 ′ are provided downstream of the rotary shear 2, and a rotary cutter 3 is arranged next to them. Two sets of slitter / scorers having the same structure are usually provided in the line in order to correspond to the order change of the corrugated board sheet to be manufactured. The slitter SL includes rotary blades 12 ₁ to ₃ (including support members 13 ₁ to ₃ ) and 12 ′ ₁ to _{3 that} are rotatable with respect to a pair of upper and lower rotary shafts 11 and are movable in the axial direction.
The upper and lower pairs (including the support members 13 ' ₁ to ₃ similarly) are provided. 14 ₁ to ₃ and 14 ' ₁ to ₃ are screw shafts, and as shown in FIG. 7, the screw shafts 14 ₁ and 14' ₁ rotatably support the rotary blades 12 ₁ and 12 ' ₁ , respectively. member 13 _1, 13 _'1 and engaged threaded engagement, other support member 13 _{2, 13' 2,} 13 _3, 13 _'for the ₃ penetrates into loosely fitted, likewise 14 _{2, 14' 2} 13 ₂ , 13 '
₂ and 14 ₃ and 14 ' ₃ are provided so as to be threadedly engaged with 13 ₃ and 13' ₃ and penetrate through other supporting members. M _C ,
M _C ′ is a motor provided for driving the screw shafts 14 ₁ to ₃ and 14 ′ ₁ to ₃ , respectively.

The scorer SC also has a rotating shaft 15, ruled line rollers 16 ₁ to ₅ (support member 1
7 ₁ to ₅ ), 16 ' ₁ to ₅ (including support members 17' ₁ to ₅ ), screw shafts 18 ₁ to ₅ , 18 ' ₁ to ₅ , screw shaft driving motors M _R , M _R ' ing.

As shown in FIG. 6, all the rotary blades 12 are fitted to one rotary shaft 11, and each support member 13 is loosely fitted to the screw shafts 14 other than the corresponding screw shafts 14. 7, the rotary blades 12 are displaced in the flow direction of the corrugated board sheet W, and each support member 13 is fitted only to the corresponding screw shaft 14 for the sake of clarity in FIG. It is shown in a closed state. The scorer SC part is also shown in FIG. 7 in a similar state.

The rotary blades 12 ₁ to ₃ and 12 ′ ₁ to ₃ of the slitter SL are moved and adjusted by independent corresponding motors M _C and M _C ′ to be positioned.

'Is positioned in _one to likewise predetermined interval _5, each independently of the motor M _R, M _R for this position adjustment' borders rollers 16 _1-5, 16 scorer SC are provided five sets in the left and right.

As an example showing such a conventional technique, for example, Japanese Patent Publication Sho 58
-10226 is available.

[Problems to be Solved by the Invention]

However, in the above-described conventional configuration, the motors that drive the screw shafts of the slitter / scorer are independently movable with the screw shafts in a one-to-one correspondence with the screw shafts so that the rotary blades and the ruled line rollers can be moved and adjusted to arbitrary predetermined positions. It is provided in a relationship.

Therefore, the number of drive motors increases, the mechanism is complicated, the control circuit for controlling the drive motors is complicated, and the drive power is consumed.

The present invention has been made in view of the present state of the art of such a slitter / scorer, and its object is to drive the screw shaft of a tool by adjusting the center positions of a pair of left and right tools with respect to the center position of a corrugated board sheet. (EN) A tool positioning method capable of significantly reducing the number of motors and simplifying a control circuit to reduce costs.

[Means for Solving the Problems]

Therefore, in the present invention, as a means for solving the above problems, a tool provided movably in the axial direction of a rotating shaft arranged in a direction orthogonal to the traveling direction of the seat is provided on a screw shaft provided in parallel with the rotating shaft, A tool positioning method in which a tool is engaged via a support member that rotatably supports it, and the rotation of the screw shaft moves the tool on the rotation shaft to position it at a predetermined position. The support members are engaged, and the rotation of the screw shaft causes the support members to move symmetrically in opposite directions, and
The center position of the pair of tools respectively supported by the pair of support members is made to coincide with a position displaced from the center of the entire width of the sheet by a predetermined distance calculated from design values such as the ruled line position of the sheet, the cutting position, and the sheet width. Thus, the positioning method is adopted in which the screw shaft is moved in the axial direction and then the pair of tools are symmetrically moved in opposite directions to a predetermined design position.

[Action]

According to the present invention configured as described above, a pair of tools is arranged with respect to the screw shaft via a pair of supporting members, and the pair of tools are symmetrically centered on the center between the tools by the rotation of the screw shaft. Moving. Then, by moving the screw shaft and these tools in the axial direction as a whole, the distance between the tools is shifted from the center of the full width of the sheet to a position shifted by a predetermined distance calculated from the design values such as the ruled line position of the sheet, the cutting position and the sheet width. Match the centers of. Then, after that, the pair of tools are moved symmetrically in opposite directions to a predetermined design position. Therefore, by transmitting the rotation of the screw shaft or the like from only one side of the screw shaft, it is possible to perform cutting and scoring with a predetermined width on the sheet with a tool at a desired position.

When it is desired to provide a plurality of cutting lines and ruled lines, it can be achieved by providing a plurality of combinations of the screw shafts and the like.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show slitter scorers 1 and 1'for carrying out the sheet cutting / ruled line width adjusting method according to the present invention (FIG. 1 is a sectional view taken along the axis of rotation of the scorer).

The slitter SL has exactly the same structure as the conventional one shown in FIG. 7, and a pair of upper and lower tools, that is, rotary blades are symmetrically arranged in three sets (12 ₁ to ₃ , 12 ′ ₁ to ₃ ). , Three pairs (14 ₁ to ₃ , 14 ' ₁ to ₃ ) of a pair of upper and lower screw shafts are provided symmetrically in order to move and adjust them in the axial direction, and three left and right screw shafts are driven to rotate these screw shafts. Drive motors M _C and M _C ′ (total of 6 units).

On the other hand, the scorer SC has a different structure from the conventional one as follows. A pair of upper and lower tools, that is, ruled line rollers, are arranged symmetrically in five sets (16 ₁ to ₅ , 16 ' ₁ to ₅ ) and are rotated by rotating shafts 15 and 15. This rotating shaft 15, 15
As shown in FIG. 1, the driving force is applied by rotating an endless belt b wound around two pulleys g at its shaft end by a drive motor (not shown).

In order to move the ruled line rollers 16 ₁ to ₅ and 16 ′ ₁ to ₅ in the axial direction of the rotary shafts 15 and 15, the ruled line rollers respectively support plates 17 ₁ to ₅ and 17 ′ ₁ to ₅ that rotatably support the ruled line rollers. Screw shafts 18 (18 '), 18 (1
8 ') is engaged. Each of the screw shafts 18 and 18 'is a single screw shaft, but at the center in the width direction thereof, screws having opposite screw directions are engraved.

The arrangement of these screw shafts when viewed in section is 18 _{1 at the} four vertices of a square centered at 18 ₃ as in the conventional example of FIG.
18 ₂ , 18 ₄ and 18 ₅ are arranged. In addition, the screw shaft 18 ₁ ,
18 _'1 supporting plate 17 _1, 17' ₁ has engaged threaded engagement symmetrically position the other of the support plate 17 _2, 17 _'2, 17 _3, 17' ₃ loosely fitted for _...... Through the screw shafts 18 ₂ and 18 ′ ₂ on the support plate 1
7 ₂ and 17 ′ ₂ are screw-engaged in symmetrical positions and other support plates 17 ₃ and 1
7 _'3, 17 _4, 17' ₄ are provided and so through the _.......

Note that FIG. 4 is shown in the same state as FIG. 7 for the sake of clarity.

As shown in FIG. 1, in order to synchronously rotate a pair of upper and lower screw shafts at the end of the screw shaft, in the illustrated example, a connecting means 19 composed of a bevel gear and a connecting rod (the length can be adjusted in the vertical direction) is used. A pair of upper and lower screw shafts are connected to each other, and these are driven by one motor M _R ′. in this case,
In the conventional example, as shown in FIG. 7, screw shafts 18 ₁ , 18 ′ ₁ , 1
8 ₂ and 18 ′ ₂ ... are screw shafts provided separately on the left and right sides, and were respectively driven by the five motors M _R and M _R ′ independently. As shown in Fig. 4, the five motors M _R on the right side (upper side of Fig. 4) alone are used for screw shaft 18
₁ , 18 ' ₁ , 18 ₂ , 18' ₂ ... Are driven respectively.

Further, as shown in FIG. 3, the slitter / scorer 1, 1'of this embodiment has wheels on the lower part of its main body which can be moved in the axial direction of the screw shaft, and an appropriate driving means (not shown) such as a motor. Alternatively, a screw shaft moving device 20 which is composed of a hydraulic cylinder or the like and can move the screw shaft in the width direction of the corrugated paperboard sheet W is provided.

Incidentally, because of the above-mentioned configuration, each rotary blade 12, 12 '
Is the corresponding independent drive motor M _C , M _C ′ and screw shaft
14, 14 'are respectively moved to its own position by, but borders rollers 16 and 16' about the center line of the common one scorer on the screw shaft 18 by a common single drive motor M _R 'is a Can be moved symmetrically to the same distance.

The tool positioning method according to the present invention for adjusting the sheet cutting and ruled line width by the slitter / scorer of this embodiment configured as described above is carried out as follows.

FIG. 5 shows a concrete example of cutting a corrugated cardboard sheet and taking a ruled line. (A) 1 2-line, (b) 2 2-line, (c) 3
This is an example of a two-page ruled line. In the case of two or three pages, the width and ruled line position of each page are the same. In Figure 5, M /
C is a machine center (or seat center), and SS / C is a center line after the screw axis moving device 20 moves the slitter / scorer by the distance D.

The distance D is determined so that the ruled line rollers 16 and 16 'are moved symmetrically equidistantly and positioned at a desired position, that is, the previously determined ruled line roller 16 after positioning. It is a distance determined so that the center of the interval with 16 ′ and SS / C match.

FIG. 3A shows a basic example in which the method of the present invention is carried out by picking one rule and two ruled lines.

After the slitter / scorer moves to a position where the center is a distance D from M / C, the pair of scorer rollers 16 and 16 'of the scorer are left / right symmetrical in opposite directions with SS / C as the center by a common motor M _R '. Are moved equidistantly and are arranged at the position of distance A (dotted line in the figure), and the other ruled line rollers are placed at the standby positions at the left and right side ends by the common motor M _R ′. When the ruled line rollers are arranged as described above, and the rotary blades 12 ₁ and 12 ′ ₁ for trimming the slitter SL are SS / C based on their own drive motors M _C and M _C ′, respectively, From this reference, they are moved and positioned to the left and right positions of distances B and C + D, respectively. The other rotary blades are moved left and right by a corresponding unique drive motor so as to be in a standby state.

As can be seen from the above description, in this example, when the ruled line is to be inserted into the positions S and S + 2A from the lower end of the sheet with respect to the entire width of the sheet to be cut (= 2C = 2 (B + D)), The SS / C which is the center of the pair of ruled line rollers 16 and 16 '
While moving to a position with a distance D from the M / C, the crease rollers 16 and 16 'are opposite to each other with a distance A in the direction of the SS / C.
The method of the present invention is implemented by moving in steps.

In this case, in order to finally manufacture the cardboard box ordered by the customer, it is necessary to perform cutting and scoring processing on the cardboard sheet, and depending on the size and shape of the cardboard box to be the final product, the cardboard sheet All the data about the full width and half width of the corrugated board sheet to be cut and processed, the positions of ruled lines, the dimension between ruled lines, the relative positional relationship between the rotary blade and the ruled line roller, etc. are known in advance. That is, when the ruled line position S from the lower end of the cut sheet is determined with respect to the entire sheet width, the distances A and B are also automatically determined. Therefore, the moving distance D of SS / C is the above design value S, A,
It is given as a distance to move SS / C from M / C so as to satisfy B and C.

In the figure (b), the slitter / scorer moves the distance D and then symmetrically moves to the position of the distance A and A + about SS / C.
The ruled line rollers 16 ₁ , 16 ′ ₁ , 16 ₂ and 16 ′ ₂ are moved to the position B by two motors M _R ′, which are common to the ruled line rollers 16 ₁ , 16 ′ ₁ , 16 ₂ and 16 ′ ₂ , and the other ruled line rollers are in a standby state.

The rotary blades of the slitter SL move, for example, 12 ′ ₁ , 12 ′ ₂ and 12 ₁ at their respective distances D, D + E and C from SS / C by their corresponding drive motors, and the other rotary blades are in the standby state. To do. In the figure (c), the slitter / scorer moves the distance D, and then the distances A, A + B, A are symmetrical with respect to SS / C.
Ruled line rollers 16 ₁ , 16 ' ₁ , 16 ₂ , 1 at + B + C position
6 of the common _'2, 16 _{3, 16' 3} to each three motors
Move with M _R ′ and put the other ruled line rollers in standby.

The rotary blade of slitter SL is distance D + F, D + F + from SS / C
At each of G, E, and E + G points, for example, 12 ₁ ′, 12 ′ ₂ , 12 ₁ , 12
Move ₂ and put the other rotary blades in standby. 2A here
= C and D + E + F = G.

Note that FIG. 2 is a plan view of the slitter / scorer when the corrugated paperboard sheet W is processed by the three-piece, two-row rule of FIG. 5 (c).

Although not shown in the drawings, the ruled line roller and the rotary blade can be moved and arranged at predetermined positions in the same manner for 1 ruled 1 ruled, 2 ruled 1 ruled, 3 ruled 1 ruled, etc. it can.

In the above-mentioned embodiment, the slitter and the scorer are explained as being provided in the integral casing. However, in general, two slitters and scorers are provided in order to respond to lot change. Therefore, one of them has two sets of slitters. Then one more
The pedestal can also be configured to have two sets of scorers. In this case, since the slitter does not need to be moved, it is fixedly installed, and the scorer is configured to be movable in the seat width direction.

In addition, since the ruled line rollers are usually provided in a larger number than the rotary blades, it is advantageous to reduce the number of drive motors used by using the same drive motor for moving the ruled line rollers as in the above embodiment. However, in the same manner as in the above embodiment, the ruled line rollers are moved by independent drive motors, respectively, and the rotary blades are symmetrically moved by the drive motors common to the left and right in the same manner as in the above embodiment. The number of units used may be reduced.

Further, although the case where both the slitter and the scorer are provided is shown in the present embodiment, the case where only one of them is provided may be provided.

〔effect〕

As described above in detail, according to the present invention, the pair of tools engaged with the screw shafts each having the reverse screw engraved are rotated and moved symmetrically, and the ruled line position for setting the center between the tools is set. Since it matches the center of the tool, the drive motor for moving and positioning the tool can be significantly reduced, the cost can be reduced, and the control circuit can be simplified.

[Brief description of drawings]

FIG. 1 is a sectional view taken along the position of the scorer of the embodiment of the slitter scorer for carrying out the sheet cutting and ruled line width adjusting method according to the present invention, FIG. 2 is a plan view of the slitter scorer, and FIG. 3 is a side view. FIG. 4 is a plan view of the rotary blade and ruled line roller, FIG. 5 is an explanatory view of the operation, FIG. 6 is a diagram showing the whole including a conventional slitter / scorer, and FIG. 7 is a conventional diagram. It is the figure which developed the rotary blade and ruled line roller of a slitter scorer in plane. 1, 1 '... slitter scorer, SL ... slitter, SC ... scorer, 11, 15 ... rotary shaft, 12 ... rotary blade, 13, 17 ... support plate, 14, 18 ... screw shaft, 16 …… Ruled line roller.

Claims (1)

[Claims] 1. A support member rotatably supporting a tool provided on a screw shaft provided parallel to the rotary shaft, the tool being provided so as to be movable in the axial direction of a rotary shaft arranged in a direction orthogonal to the running direction of the seat. In the method of positioning a tool in which the tool is positioned on a predetermined position by moving the tool on the rotating shaft by rotating the screw shaft, a pair of the supporting members are engaged with the screw shaft, Of the pair of tools supported by the pair of supporting members, the center position of the pair of tools respectively supported by the pair of supporting members from the center of the entire width of the sheet to the position of the ruled line or the cutting position of the sheet. Also, the screw shaft is moved in the axial direction so as to match the position shifted by a predetermined distance calculated from design values such as sheet width, and then the pair of tools are symmetrical in opposite directions. Method for positioning a tool, characterized in that moving to a predetermined position on the design.