JPS6113269Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a slitter device for cutting paper strips for banknotes.

For example, when paper for banknotes wound in a roll is continuously fed out and cut into a certain width in the flow direction, the predetermined position from the reference mark attached to the paper in advance is The upper and lower slitter blades pinched and contacted each other to cut and slit the band-shaped banknote base paper. So as an example 3
Regarding the case of sheet taking, in Fig. 3, the flow direction of the paper material is the direction of the arrow, and there are 6 sets of the same set of upper and lower slitter blades S ₁ and S ₂ as 1 set.
They are arranged as shown in the diagram. The paper material flowing in the direction of the arrow is first divided into three parts S ₁ , S ₂ , S ₃ , and S ₄ , and only the central piece of paper B is cut to a predetermined size.
Both ends of the left and right pieces of paper A and C are slightly cut by S ₅ , S ₆ , S ₇ , S ₈ and S ₉ , S ₁₀ , S ₁₁ , and S ₁₂ to a predetermined size. Thin pieces of paper a, b, c, and d are discarded.

However, during operation, the above-mentioned predetermined position may shift due to, for example, expansion and contraction of the paper due to humidity or other various conditions. In such cases, conventionally the machine was stopped and the positions of the slitter blades were adjusted one by one. In this case, the cutting width must be accurate, so when adjusting the set of upper and lower slitter blades (for example, S ₁ and S ₂ ), the slitter blades of the paired set of slitter blades S ₃ and S ₄ must also be adjusted. becomes complicated.

The present invention was devised to solve the above-mentioned drawbacks, and its purpose is to measure the distance between the slitter blade and a predetermined position from the reference mark attached to the paper material during operation. To provide a slitter device which can simultaneously adjust both slitter blades even if there is a positional shift without stopping the machine each time and without changing the interval between the pair of slitter blades on both sides of the cutting width. .

In the following explanation, the principle is the same for each pair, so we will explain only one pair of slitter blades (for example, S ₅ , S ₆ and S ₇ in Fig. 3,
_S8 ). Furthermore, since the adjustment method for both the upper and lower blades is the same, only the lower blade will be mainly explained. In the drawings, reference numeral 1 denotes a frame stand, and a rack stand 2 is mounted on the frame stand 1 so as to be able to reciprocate and slide in the linear direction shown by the arrow in FIG. A threaded bolt portion 4 formed on a shaft 3 is screwed to the rack base 2, and when the shaft is rotated, the rack base 2 can be slid in the direction shown by the arrow in FIG.

The shaft 3 is rotatably supported by a bearing 6 disposed on the frame 5, and slightly protrudes outward from the bearing 6. A gear 7 and a scale plate 3 are attached to this projecting end. A pointer 9 cooperates with the scale plate 8, and the pointer 9 is fixed to the frame 5 mentioned above. The gear 7 described above is operatively connected to a gear 11 via a chain 10. The gear 11 is fixed to a handle 13 fixed to the moving shaft 12 of the upper slitter blade.

Rack teeth 14 are provided on the upper surface of the rack base 2 along its longitudinal direction, that is, along the sliding direction of the rack base 2, and a pair of pinions 15, 15 are engaged with the rack teeth 14. This pinion 1
5 and 15 are pivotally attached to shafts 16 (only one of which is shown in FIG. 2) passed through gearboxes 17 and 17. A knob 18 is pivotally attached to the shaft 16, and by operating the knob 18, the gearboxes 17, 17 can be moved along the tooth rest 2. gearbox 1
A drive shaft 19 is passed through the boxes 17 and 17, and rotates a gear mechanism (details are omitted) in the boxes 17 and 17, transmits the driving rotational force to the lower slitter blade 20, and rotates the lower slitter blade 20. It seems to be rotating. The drive shaft 19 is linked to a drive source via a coupling 21. Reference numeral 19' is a spline which prevents the gear in the gear box 17 from rotating and slipping, and allows the gear to slide freely in the longitudinal direction of the shaft 19. An upper slitter blade 22 is made to cooperate with the lower slitter tooth 20. Above upper and lower slitter blades 20, 2
2 are arranged in multiple rows to slit a strip of base paper from a wide paper material.

Next, the operation will be described. The drive shaft 19 is rotated by a drive source, the lower slitter blade 20 is rotated via a gear in the gear box 17, and the upper slitter blade 22 is also rotated by the same mechanism as the lower slitter blade 20. Therefore, the paper material is fed out from the paper material supply source and the upper and lower slitter blades 22, 2
0 and slit. A plurality of blades similar to the upper and lower slitter blades 22, 20 as described above are arranged in the width direction of the paper material, so that a plurality of strips of base paper are formed from the wide paper material. If the slitter blade is misaligned, the handle 13 is rotated to rotate the gear 7 via the chain 10 hooked to the gear 11, thereby rotating the shaft 3. Due to the rotation of the shaft 3, the threaded bolt portion 4
slides the rack base 2 in the left-right direction in FIG. The amount of sliding in this case can be easily confirmed because the scale plate 8 is rotated and the pointer 9 indicates the amount of rotation. Since the gearboxes 17, 17 can freely slide in the longitudinal direction with respect to the shaft 19, if the rack base 2 slides in the left-right direction as described above, both the gearboxes 17, 17 simultaneously move in the same direction. The lower blades 20, 20 also move accordingly.
Therefore, the lower blades 20, 20 can be adjusted left and right while always maintaining a constant spacing. The upper blade also moves in conjunction with the movement of the lower blade.

As explained above, according to the present invention, fine adjustment of the slitter blade can be easily performed using the handle, so that fine adjustment can be performed reliably and quickly even during operation, and work efficiency can be improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partial explanatory diagram of the main part, and FIG. 2 is a diagram showing A-A in FIG.
FIG. 3 is a side view as seen from line A, and is an explanatory plan view showing a state in which the paper material is cut into three pieces. 2...Rack base, 3...Shaft, 4...Screw bolt part, 13...Fine adjustment handle, 14,1
5, 16, 18...Gearbox moving means, 17
...Gearbox, 20...Slitting blade.

Claims (1)

[Scope of utility model registration request] It slides back and forth on the frame base in a fixed linear direction,
and a rack base having rack teeth provided on its outer surface along the sliding direction; and a shaft having one end formed as a threaded bolt part and screwed to the rack base along the sliding direction. , a handle operatively connected to and rotatably attached to the shaft; a drive shaft oriented parallel to the sliding direction of the rack base and rotatably provided;
A gearbox has a gear mechanism built therein and is attached to the drive shaft so as to be movable along the longitudinal direction of the shaft. A slitter having a mechanism consisting of a meshed pinion and a slitter blade which is attached to the drive shaft so as to be movable in the direction of the shaft, and which is rotatably connected to a gear mechanism in the gearbox. Device.