JP2534036Y2 - Sheet-shaped article cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cutting device for cutting a sheet-like article such as a thin metal plate, a film, and paper in parallel by a plurality of round blades arranged opposite to each other. The present invention relates to an improvement for facilitating replacement of a round blade, re-polishing, and adjustment of a mesh amount.

[Prior Art] FIGS. 7 and 8 show an example of a conventional sheet-shaped article cutting apparatus. This device is disclosed in Japanese Utility Model Publication No. Sho 63-4636. In the figure, reference numeral 1 denotes a lower unit, 2 denotes an upper unit, and a pair of plate-like spacers 3 is sandwiched between these units 1 and 2. As shown in FIG. 5, they are fixed to each other by a plurality of bolts 4 that penetrate the spacer 3 from the upper surface of the upper unit 2 and reach the lower unit 1.

The lower unit 1 is composed of a base plate 5, a pair of bearing boxes 6 fixed to both ends of an upper surface thereof, and a lower shaft 7 horizontally supported through the bearing boxes 6, and both ends of the lower shaft 7 are The bearing 8 is rotatably supported by a bearing 8 fixed inside the bearing box 6.

A large number of lower round blades 9 are coaxially supported by a fixed ring 10 at the center of the lower shaft 7. Further, both ends of the lower shaft 7 protrude from the bearing housing 6, and a driven part 11 to be engaged with a drive mechanism (not shown) is formed on a left end (the same applies hereinafter in FIG. 4), and a pulley 12 is fixed on a right end. Have been.

On the other hand, the upper unit 2 has bearing housings 14 on both lower surfaces of the top plate 13.
Are fixed, and the upper shaft 15 is horizontally supported through the bearing boxes 14. Both ends of the upper shaft 15 are rotatably supported by bearings 16 fixed inside each bearing box 14. This upper axis
At the center of the upper 15 is an upper round blade 17 meshing with the lower round blade 9 respectively.
Are coaxially supported via a fixing ring 18. Also, both ends of the upper shaft 15 project from both ends of the upper unit 2,
A pulley 19 is fixed to the right end.
On the other hand, a shaft position adjusting mechanism 20 capable of finely moving the upper shaft 15 in the axial direction is provided at the left end while being connected to the shaft 12.

This shaft position adjusting mechanism 20 includes a male screw member 22 attached to the left end of the upper shaft 15 via a bearing 21 so as to be relatively rotatable,
It mainly comprises a female screw member 23 fixed to the left end face of the bearing box 14. A male screw is formed on the outer peripheral surface of the male screw member 22, and a position adjusting handle 24 is fixed to an end. In addition, a female screw to be screwed with the male screw is formed on the inner surface of the female screw member 23, and the female screw member 23
25 for reducing the diameter of the screw to prevent rattling
Is attached.

Due to the above configuration, this device can be used not only when stopped, but also when the upper shaft 15
Even when the sheet-like article is being cut by rotating the lower shaft 7 and the male screw member 22
By rotating the shaft relative to the female screw member 23, the axial position of the upper shaft 15 can be finely adjusted, and the contact pressure between the upper round blade 17 and the lower round blade 9 can be set to an optimum value. is there.

"Problem to be solved by the invention" However, the following problems have been pointed out in the above device.

When the worn round blades 9 and 17 are to be reground or replaced, first, the entire switching device is horizontally lowered on a surface plate serving as a positioning reference surface, all bolts 4 are removed, and the upper unit 2 is removed. Is removed from the lower unit 1 and the upper shaft 15 or the lower shaft 7 is removed, and the round blades 9 and 17 are reground or replaced.

Then, after the shafts 7 and 15 are housed in the units 1 and 2, the operator temporarily assembles the units 1 and 2 and the spacers 3 manually while the apparatus is horizontally lowered on the surface plate. . Further, the bolts 4 are tightened to fix them, and the bolts 4 are erected by a crane or the like and reinstalled at a predetermined position.

As described above, since a device of up to about 1 ton is laid or erected by a crane or the like, this operation necessarily involves danger. In addition, since the temporary assembly of heavy equipment is performed manually, a great deal of labor is required.At that time, the upper and lower round blades 17 and 9 may collide with each other and damage them.
The work requires careful attention, and has the disadvantage of low reliability and poor efficiency.

When the spacer 3 is replaced with one having a different thickness in order to change the engagement amount of each round blade 17, 9 as in the above, the entire device is dropped on a surface plate to disassemble, and the spacer is replaced. It took a lot of effort and time to reassemble and stand.

Although the horizontal position accuracy of the upper unit 2 with respect to the lower unit 1 is ensured only by the plurality of bolts 4,
Actually, since these bolts 4 have a slight play, each time the bolts 4 are operated, several tens of μm are added to the upper unit 2.
A horizontal error of about m occurs. This error is the upper round blade 17
And the variation in the contact pressure of the lower round blade 9, and the cutting accuracy is reduced accordingly.

"Means for solving the problem" The present invention has been made to solve the above problems,
A lower unit having a lower shaft coaxially supporting a number of lower round blades and a pair of bearing portions rotatably supporting the lower shaft,
A sheet-like article cutting device in which an upper shaft having a number of upper round blades coaxially supported thereon and an upper unit having a pair of bearing portions rotatably supporting the upper shafts are removably disposed vertically. A guide mechanism for vertically moving the upper unit with respect to the unit is provided, and the guide mechanism is provided with a guide plate provided on the lower unit, and detachably provided on the upper unit, and provided by the guide plate. The lower unit is provided with an elevating means which detachably supports the upper unit and which can raise and lower the same.

"Operation" In this cutting device, the hydraulic lift is operated to lift the upper unit and the lifting / lowering body along the guide mechanism, thereby retracting the upper round blade in the upper unit to a position where it does not contact the lower round blade. Can be done. In this retracted state, temporarily support the upper unit, remove the upper unit from the elevating body,
By vertically attaching and detaching with a crane or the like, disassembly and reassembly of the apparatus can be easily performed without fear of collision of the round blade, and work efficiency of re-polishing or replacing the round blade is enhanced.

Also, by lifting the upper unit with the hydraulic lift, the spacer can be freely removed, so that the adjustment of the meshing amount of the round blade is extremely easy.

Furthermore, the upper unit is moved in parallel with the lower unit by the guide mechanism using the guide plate and the elevating body. And the cutting accuracy of the sheet-like article can be improved accordingly.

Embodiment FIG. 1 and FIG. 2 are a front view and a left side view showing an embodiment of a sheet-like article cutting apparatus according to the present invention. In these figures, the same parts as those of the conventional apparatus are denoted by the same reference numerals, and the description thereof will be omitted. Only the differences will be described below. The front, rear, left and right used in the description are based on FIG.

As shown in FIG. 2, a rectangular plate-like guide plate (part of the guide mechanism) 30 is fixed to the back surface of the lower unit 1. At the center of the guide plate 30, a rectangular opening 31 extending in the horizontal direction is formed as shown in FIG.
A sheet-like article to be cut through is introduced into the apparatus.

On the surface of the guide plate 30 facing the upper unit 2, there is formed a step 32 cut out at a right angle as shown in FIG. On the other hand, on the back surface of the upper unit 2, a rectangular lifting plate (a lifting member and a part of a guide mechanism) 33 is fixed along the vertical surface of the step portion 33. A notch 34 is formed corresponding to the opening 31 of the guide plate 30.

Cross roller bearings that extend up and down, respectively, between both ends of the guide plate 30 and the lift plate 33 (part of the guide mechanism)
35 is interposed, and the elevating plate 33 can be moved up and down while maintaining a horizontal state.

As shown in FIG. 4, these cross roller bearings 35 are composed of a pair of rails 36 each having a V-shaped groove on the opposing surface, and a number of rolling elements 37 housed between the V-grooves. Each of the rails 36 is movable in the longitudinal direction while maintaining the parallelism and the interval with each other with high precision.

As shown in FIG. 6, four vertically extending slots 38 are formed in the guide plate 30 at positions opposed to the back surface of the bearing 14, and the lifting plate 33 is connected to the upper unit 2 through these slots 38. Bolts 39 fixed to the bearing housings 14 are tightened.

As shown in FIG. 2, L-shaped fittings 40 are fixed to upper ends of both ends of the lifting plate 33, and stopper screws 41 are vertically screwed into female screw holes formed in these fittings 40. I have. These stopper screws 41 have a handle 42 at the upper end, and the lower end faces the upper end surface of the guide plate 30. When the bolt 39 is removed and the upper unit 2 is removed from the lifting plate 33,
It serves to prevent the lifting plate 33 from falling. Note that, also in this example, a plurality of bolts 4 for mutually fixing the upper unit 2, the spacer 3, and the lower unit 1 are provided (only the left side in FIG. 1 is shown).

On the other hand, a hydraulic elevator for raising and lowering the upper shaft 15 and the upper unit 2 is provided on a side surface of the bearing box 14 on the left side of the lower unit 1.
50 is fixed with bolts 53. The hydraulic lift 50 has a thin rectangular parallelepiped shape in the longitudinal direction of the lower shaft 7, and a through hole 51 is formed horizontally at the center as shown in FIG.
The lower shaft 7 is rotatably passed through an annular bearing 52 fitted in the lower shaft 7.

The hydraulic lift 50 is a lifting rod that projects vertically from the upper surface.
A rectangular receiving plate 55 is fixed to the side surface of the bearing box 14 with a bolt 56 at each position facing the upper end of the lifting rod 54. The center of the upper surface of these receiving plates 55 has an upper shaft
A concave portion 57 cut into a semicircle is formed in conformity with the shape of No. 15.

An operation port 58 is formed on the front end surface of the hydraulic elevator 50, and a pressure screw having a hexagonal cross section for pressurizing the internal oil is formed therein.
59 are provided. Then, by inserting a hexagon wrench 60 into the pressure screw 59 and rotating, the lifting rod 54
Is raised and lowered in proportion to the rotation amount.

In the sheet-like article cutting device having the above configuration,
When re-polishing or replacing the round blades 9 and 17, first remove all bolts 4 and pressurize the screw
Turn 39 with a hexagon wrench 60 to raise the upper unit 2 in parallel to a position where the upper round blade 17 is completely separated from the lower round blade 9. After inserting the temporary supporting spacers into the gaps between the respective spacers 3 and the upper unit 2 generated by this, the hydraulic lift
The lifting rod 50 is lowered, and the upper unit 2 is supported by these temporary supporting spacers so that the upper round blade 17 does not interfere with the lower round blade 9.

Next, the bolt 39 is removed, the upper unit 2 is removed from the lifting plate 33, and the upper unit 2 is further lifted by a crane or the like and moved to a work position, and the round blades 9 and 17 in each unit 1 and 2 are reground or ground. Exchange. At this time, the lifting plate 33 does not fall because the lower end of the stopper screw 41 is locked to the guide plate 30.
Therefore, it is preferable that the tightening amount of the stopper screw 41 is set to a height at which the upper unit 2 can be easily re-fixed by the bolt 39 later.

Then, lift the upper unit 2 again with a crane or the like,
The upper unit 2 is placed on the temporary support spacer along the front surface of the elevating plate 33, temporarily supported while the upper round blade 17 is sufficiently separated from the lower round blade 9, and the upper unit 2 is positioned. Further, if necessary, the handle 24 of the shaft position adjusting mechanism 20 is turned to move the upper shaft 15 in the axial direction so that the upper round blade 17 is aligned with the groove between the lower round blades 7.

Next, the upper unit 2 is re-fixed to the elevating plate 33 with the bolt 39, and the hydraulic elevator 50 is operated to raise the upper unit 2 once, remove the temporary support spacer, and then lower the upper unit 2 It is placed on the spacer 3 and the bolt 4 is tightened and fixed to complete the operation.

As described above, in this device, the upper unit 2 is lifted by operating the hydraulic lift 50, and the upper round blade 17 in the upper unit 2 is retracted upward to a position where the upper round blade 17 does not contact the lower round blade 9, so that the round shape is obtained. The upper unit 2 can be vertically attached and detached with a crane or the like without the risk that the blades 9 and 17 collide with each other and be damaged. Therefore, when re-polishing or replacing the round blades 9 and 17, the safety of the work is greatly improved and the labor of the worker is greatly improved as compared with the conventional machine in which the entire heavy machine is knocked down. And the work efficiency is improved. In addition, since the work is performed in an upright state, a huge surface plate that was required as a reference surface during temporary assembly is not required,
This saves installation space.

On the other hand, in order to adjust the engagement amount of the round blades 9 and 17, the spacer 3 is used.
In the case of exchanging, the spacer 3 can be attached and detached only by removing the bolt 4 and lifting the upper unit 2 by the hydraulic elevator 50, so that the engagement amount can be adjusted extremely easily without using a crane or the like.

Further, since the accuracy of the upper unit 2 and the lower unit 1 in the horizontal direction is ensured by the pair of cross roller bearings 35, the positional accuracy of the two units is remarkably improved as compared with the conventional device in which the accuracy is secured only by the bolts 4. Therefore, the cutting accuracy of the sheet-like article can be improved.

Further, since the hydraulic lift 50 is used, the rattling of the lifting rod 54 is less than that of a configuration in which the upper unit 2 is raised and lowered by, for example, rotation of a screw, and the position of the round blades 9 and 17 is correspondingly reduced. There is an advantage that the accuracy is enhanced and the labor required for the operation is small because there is no force loss due to friction.

In the above embodiment, only one hydraulic lift 50 is provided. However, a similar hydraulic lift 50 is provided on the right side of the lower unit 1 and a communication pipe for pressurized oil is provided between these units, so that A configuration in which both sides of the unit 2 are simultaneously pushed up is also possible. In this way, the balance of the force applied to the upper unit 2 is good.

In addition, each part of the apparatus is not limited to the illustrated example, and may be appropriately changed in configuration as needed. For example, instead of the hydraulic elevator 30, a screw-type elevator (merely bolts and nuts may be used) may be used.
Instead of the cross roller bearing 35, another type such as a guide rod and a guide bush may be used. further,
In the above embodiment, the upper unit 2 is the top plate 13 and the lower unit 1
Has the base plate 5, but a configuration in which these are omitted is also possible.

[Effects of the Invention] As described above, according to the apparatus for cutting a sheet-like article according to the present invention, the upper unit and the elevating body are lifted along the guide mechanism by operating the elevating means, and the upper circle in the upper unit is moved. By retreating the blade upward to a position where it does not contact the lower round blade, the upper unit can be removed from the elevating body and vertically attached / detached with a crane etc. without the risk that each round blade will collide with each other and be damaged. It is possible. Therefore,
When re-polishing or replacing the round blade, the safety of the work is greatly improved and the labor of the operator is reduced, compared to the conventional equipment, in which the entire heavy equipment is knocked down. Work efficiency is increased.

Further, when replacing the spacer sandwiched between the units in order to adjust the meshing amount of each round blade, there is an advantage that the spacer can be easily attached and detached only by lifting the upper unit by the hydraulic lift.

Furthermore, since the accuracy of the upper unit and the lower unit in the horizontal direction is ensured by a pair of guide mechanisms, the positional accuracy of the two units can be remarkably improved as compared with the conventional device that ensures the accuracy only with bolts. The cutting accuracy of the sheet-like article is also improved.

[Brief description of the drawings]

1 and 2 are a front view and a left side view of a sheet-like article cutting apparatus according to the present invention, and FIG. 3 is III in FIG.
4 and 5 are plan views of the apparatus, and FIG. 6 is a rear view. 7 and 8 are a partially cutaway front view and a partially cutaway side view showing a conventional apparatus. 1 ... lower unit, 2 ... upper unit, 3 ... spacer for adjusting the engagement amount, 6 ... bearing box (bearing part), 7 ... lower shaft,
9: Lower round blade, 14: Bearing box (bearing box), 15: Upper shaft,
17 ... Upper round blade, 20 ... Shaft position adjustment mechanism, 30 ... Guide plate (part of guide mechanism), 33 ... Lifting plate (lifting body), 35 ...
… Cross roller bearing (part of guide mechanism), 41…
... Stopper screw, 50 ... Hydraulic lift (lifting means), 54 ...
... lifting rod, 55 ... receiving plate, 59 ... pressure screw, 60 ... hexagon wrench.

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-3-196912 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. A lower unit including a lower shaft coaxially supporting a plurality of lower round blades and a pair of bearing portions rotatably supporting the lower shaft, and an upper shaft coaxially supporting a number of upper round blades. And an upper unit having a pair of bearing portions rotatably supporting the upper shaft, disposing the upper round blade and the lower round blade facing each other, and rotating the upper shaft and the lower shaft. Thus, in a sheet-like article cutting device that cuts a sheet-like article in parallel between the upper round blade and the lower round blade, a guide mechanism for vertically moving the upper unit relative to the lower unit is provided. The guide mechanism includes a guide plate provided in the lower unit, and an elevating body that is detachably provided in the upper unit and that moves in a vertical direction by the guide plate. Is the above An apparatus for cutting a sheet-like article, comprising an elevating means for detachably supporting a knit and for elevating the knit.