Metal fittings separation device

Abstract

To provide a metal fitting separation device for readily and safely separating a metal fitting having a substantially U-shaped cross section and fitted to a blanket that has been used in an offset printing machine.SOLUTION: A device 1 separates a metal fitting having a substantially U-shaped cross section and fitted to an end of a blanket that is wound around a blanket cylinder of an offset printing machine from the blanket, the device including: a guide table 2 for positioning a metal fitting with a guide groove 21 that is formed at a top surface; a guide roller 3 fitted on a front side of the guide table 2; a wedge-shaped rotary cutter 4 positioned above the guide roller 3 and press-fitted to an opening of a metal fitting to push and open the metal fitting; and a motor M for rotating the wedge-shaped rotary cutter 4.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a U-shaped metal fitting attached to both ends of a blanket wound around a blanket cylinder of an offset printing press, and a separating device for separating the blanket.

Background Art

[0002] In an offset printing press, a blanket in which a cloth sheet such as a woven fabric and an elastic material such as rubber are laminated is used, and at both ends of the blanket, a metal fitting also called a fillet bar having a substantially U-shaped cross section made of aluminum for winding around a blanket cylinder is sandwiched.

[0003] When the blanket, which is a consumable, is removed from the blanket cylinder and discarded in order to be replaced with a new one, if the metal fitting remains attached, it is treated as industrial waste and must be disposed of at a cost. However, in order to recycle each material, the blanket laminated with a woven fabric or a cloth sheet and an elastic material such as rubber and the aluminum metal fitting were manually separated using tools such as pliers and cutters.

[0004] This operation requires a great deal of labor and time, so it is not only difficult to separate and recover all the metal fittings, but manual separation also involves risks.

[0005] Subsequently, a metal fitting removal device according to Patent Document 1 (Japanese Patent No. 4858163) was invented. As described in Patent Document 1, a metal fitting removal device for removing a blanket and a clamping metal fitting by cutting a part of the clamping metal fitting at both ends of the blanket is known.

Prior Art Documents

Patent Documents

[0006] /

Patent Document 1

Summary of the Invention

[0007] However, in the conventional blanket fitting removal device described above, the fitting, which has a roughly U-shaped cross-section, is linearly compressed and bent along its longitudinal direction by a clamping circular blade and a receiving roll, causing the surface plate to stand up from the blanket body surface. After the clamping state of the blanket fitting is released, the surface plate is cut along the compression bending line by a cutting circular blade and a receiving roll, thereby separating it. This separates the metal fittings and the blanket, but the device described in Patent Document 1 requires two circular blades, a clamping circular blade and a cutting circular blade. As a result, miniaturization of the device has not been achieved, and it takes up a lot of space to install. Moreover, because it uses two circular blades, adjustment and maintenance are time-consuming and inefficient, and it is also expensive. Furthermore, when separating the blanket from the metal fittings, the fittings are cut with a circular blade, causing at least the surface plate of the fittings to bend and deform significantly after cutting. This makes them bulky to store for recycling, cumbersome to manage, and requires a large storage space. In other words, the problem that this invention aims to solve is to provide a small separation device that is inexpensive, easy to use, and highly safe. [Means for solving the problem]

[0008] The invention according to claim 1 of the present invention is, A device for separating a metal fitting with a roughly U-shaped cross-section, which is attached to the end of a blanket that is wrapped around the blanket cylinder of an offset printing press, from the blanket, This fitting separation device comprises a guide base for positioning the fitting by guide grooves formed on its upper surface, a guide roller mounted in front of the guide base, a wedge-shaped rotating blade positioned above the guide roller and pressed into the opening of the fitting to push the fitting open, and a motor for rotating the wedge-shaped rotating blade.

[0009] The invention according to claim 2 of the present invention is, The metal fitting separation device according to claim 1 is a metal fitting separation device having an annular groove for maintaining the orientation of the metal fitting, wherein the guide roller has an annular groove for maintaining the orientation of the metal fitting.

[0010] The invention according to claim 3 of the present invention is, In the metal fitting separation device according to claim 2, the guide groove formed on the upper surface of the guide base Bottom portion in the depth direction The guide width is wider than the width of the fitting, and is the same as the width of the annular groove of the guide roller, in this fitting separation device.

[0011] The invention according to claim 4 of the present invention is, In the metal fitting separation device according to any one of claims 1 to 3, the outer edge of the wedge-shaped rotating blade has a tip portion formed at an acute angle, wedge-shaped rotating blade This is a separation device for a metal fitting having an annular wedge portion consisting of a base end formed at a larger angle than the tip end on the central side. [Effects of the Invention]

[0012] According to the invention described in claim 1, the device consists of a guide base having a guide groove on its upper surface, a guide roller mounted in front of the guide base, a wedge-shaped rotating blade positioned above the guide roller and pressed into the opening of the metal fitting to push the fitting open, and a motor that rotates the wedge-shaped rotating blade. Because it has a small number of parts, it can be made smaller, manufactured at low cost, and safety can be ensured. Furthermore, since there is no need to cut the metal fittings, the motor torque can be kept to a minimum, reducing unnecessary energy consumption. In addition, wear on the wedge-shaped rotating blade is minimal, making maintenance easy and economical.

[0013] According to the invention of claim 2, the annular groove of the guide roller can maintain the position of the fitting before separation, so that the blanket and fitting can be separated easily and quickly without requiring complex operations, and the work efficiency can be greatly improved.

[0014] According to the invention of claim 3, the guide groove formed on the upper surface of the guide base Bottom portion in the depth directionSince the guide width is wider than the width of the fitting and is the same as the width of the annular groove of the guide roller, when the fitting is sent from the guide groove on the upper surface of the guide table to the annular groove of the guide roller, the fitting is surely positioned, smoothly sent without getting caught or losing its posture, and the wedge-shaped rotary blade is surely press-fitted into the opening of the U-shaped fitting. Therefore, it is possible to prevent an error in which separation becomes difficult due to an unintended deformation of the fitting caused by the wedge-shaped rotary blade, and to surely separate, thereby suppressing the occurrence of unnecessary costs, improving work efficiency, and preventing economic losses.

[0015] According to the invention of claim 4, on the outer peripheral edge of the wedge-shaped rotary blade, there is a tip portion formed at an acute angle and wedge-shaped rotating blade an annular wedge portion composed of a base end portion formed at a larger angle than the tip portion on the center side. Therefore, first, the tip portion formed at an acute angle surely abuts against the opening of the U-shaped fitting, and after the U-shaped fitting is pushed open into a V shape by the wedge-shaped rotary blade, it can be further pushed open more by the base end portion formed at a larger angle than the tip portion. Thus, separation from the blanket end material can be easily and safely performed in one step by one wedge-shaped rotary blade, and work efficiency and safety can be improved.

[0016] The U-shaped fitting from which the blanket end material has been separated and removed does not deform significantly except for being opened into a V shape and maintains a long rod-like shape. Therefore, it is very efficient in subsequent storage, transportation, etc., and although it was conventionally disposed of at a cost as industrial waste, only the fitting can be recovered, resulting in an economic effect of being taken back as a valuable item.

Brief Description of the Drawings

[0017] [Figure 1] Perspective view of the fitting separation device according to the embodiment. [Figure 2] Front view of the fitting separation device according to the embodiment [Figure 3] Side view of the fitting separation device according to the embodiment [Figure 4] Plan view and front view of the blanket before separating the fitting [Figure 5] Cross-sectional view of the metal fitting with the blanket end material tightened and fixed [Figure 6] Front view of the separating device with the guide table omitted [Figure 7] Partial enlarged front view of the wedge-shaped rotary blade

Embodiments for Carrying Out the Invention

[0018] Hereinafter, embodiments of the present invention will be described by way of examples.

[0019] FIG. 1 is a perspective view of the separating device 1 of the metal fitting according to the embodiment, FIG. 2 is a front view of the separating device of the metal fitting according to the embodiment, and FIG. 3 is a plan view of the separating device of the metal fitting according to the embodiment. In addition, in FIGS. 2 and 3, the safety cover 8 made of a translucent plate such as an acrylic plate shown in FIG. 1 is omitted.

[0020] As shown in FIGS. 1 to 3, the separating device 1 of the metal fitting according to the embodiment includes a guide table 2, guide rollers 3 in front of the guide table 2, and a wedge-shaped rotary blade 4 driven by a motor M above the guide rollers 3. The guide width 21W of the guide groove 21 formed on the upper surface of the guide table 2 is wider than the width 5W of the metal fitting (see FIG. 5) and is the same as the width 31W of the annular groove portion of the guide roller 3 (see FIG. 6).

[0021] FIG. 4 shows a used blanket 6 of an offset printing machine. FIG. 4(a) is a plan view of the blanket with metal fittings 5 attached to both ends, and FIG. 4(b) is a side view of the blanket with metal fittings 5 attached to both ends.

[0022] First, as a preliminary preparation for separating the metal fitting using the separating device of the metal fitting, the metal fitting portion is separated by any method such as a cutter knife along the metal fittings 5 attached to both ends from the blanket removed from the blanket cylinder (not shown).

[0023] As shown in FIG. 5, the separated metal fitting portion is in a state where the blanket end material 6a, which is a part of the blanket, is tightened and fixed.

[0024] Figure 6 is a front view of the separation device with the guide base 2 omitted. Figure 6(a) shows the device before separation, with the U-shaped opening 51 (see Figure 5) of the metal fitting 5, to which the blanket end material 6a is fastened and secured, facing upwards. Figure 6(b) shows the U-shaped opening 51 of the metal fitting 5, to which the blanket end material 6a is fastened and secured, being pushed open in a V-shape by the wedge-shaped rotating blade 4. Figure 6(c) is a side view thereof.

[0025] When the switch (not shown) of the fitting separation device 1 is turned ON, the motor M rotates and the wedge-shaped rotating blade 4 begins to rotate. Then, the fitting 5, with the blanket end material 6a still tightened and fixed, is set in the guide groove 21 on the upper surface of the guide base 2 shown in Figures 2 and 3. With the U-shaped opening 51 of the fitting 5 facing upwards and maintaining an upright position, the fitting 5 is slid from the guide groove 21 towards the front guide roller 3. When the tip of the metal fitting 5, to which the blanket end piece 6a is tightened and fixed, is guided into the annular groove 31 of the guide roller 3, the metal fitting 5, with the blanket end piece 6a tightened and fixed, is supported by the annular groove 31 of the guide roller 3, and is caught in the U-shaped opening 51 of the metal fitting 5, which is driven by the motor M above the guide roller 3, and moves forward while the wedge-shaped rotating blade 4 is pressed in.

[0026] As shown in Figure 7, the wedge-shaped rotating blade 4 has an annular wedge portion 41 consisting of a tip portion 4a formed at an acute angle on its outer edge and a base portion 4b formed at a larger angle than the tip portion 4a on its central side. Initially, the tip portion 4a of the wedge-shaped rotating blade 4 bites into the U-shaped opening 51 of the metal fitting 5, pushing the opening 51 open in a V-shape by the angle of the tip portion 4a, and the rotational movement of the wedge-shaped rotating blade 4 pushes it forward.

[0027] As the metal fitting 5 is pushed forward, its base end portion 4b, which is formed at a larger angle than the tip portion 4a of the annular wedge portion 41, is pressed in more deeply. This causes the metal fitting 5 to be pushed open into a wider V-shape along its entire length, and the blanket end material 6a, which had been tightened and fixed, is released and discharged from the separation device.

[0028] If the annular wedge portion 41 is formed at an acute angle, it will be easier for it to enter the opening 51 of the U-shaped metal fitting 5, but the V-shape opening may not be sufficient, and the blanket end material 6a may not be completely separated. By integrally providing a base end portion 4b that has a larger angle than the acute-angled tip portion 4a, the opening 51 of the metal fitting 5, which has been reliably opened by the tip portion 4a, is further widened, forming a wide V-shape in one step, and the blanket end material 6a is released from the metal fitting 5 and discharged in a separated state or in a state that makes separation easy. In Figure 7, (a) shows an example where the cross-sectional shapes of the tip 4a and base 4b are formed as straight lines, and (b) shows an example where the cross-sectional shapes of the tip 4a and base 4b are formed as curves. In either case, the base 4b, which has a larger angle than the tip 4a, is integrally provided.

[0029] If the metal fittings 5 ​​and blanket scraps 6a are discharged in a separated state, they are collected and managed separately. If they are discharged in a state where they are not completely separated due to adhesive, etc., they are separated manually and then collected and managed separately, and the metal fittings 5 ​​can be disposed of as valuable material.

[0030] The wedge-shaped rotating blade 4 is integrally attached to the motor M, and a height adjustment bolt 7 can be installed to allow for fine adjustments to accommodate differences in the size of the fitting 5. [Explanation of Symbols]

[0031] 1. Metal fitting separation device 2. Guide stand 21... Guide groove 21W · Guide width 3. Guide roller 31. Annular groove section 31W ··Width of the annular groove 4. Wedge-shaped rotary blade 4a...Tip 4b...Proximal end 41. Ring-shaped tip 5. Hardware 51...Opening 5W...Width of the metal fittings 6. Blanket 6a. Blanket scraps 7. Height adjustment bolt 8. Safety cover M...motor

Claims

1. A device for separating a metal fitting with a roughly U-shaped cross-section, which is attached to the end of a blanket that is wrapped around the blanket cylinder of an offset printing press, from the blanket, A device for separating metal fittings, comprising a guide base for positioning the fittings by guide grooves formed on its upper surface, a guide roller mounted in front of the guide base, a wedge-shaped rotating blade positioned above the guide roller and pressed into the opening of the fitting to push the fitting open, and a motor for rotating the wedge-shaped rotating blade.

2. A metal fitting separation device according to claim 1, wherein the guide roller has an annular groove for maintaining the orientation of the metal fitting.

3. A fitting separation device according to claim 2, wherein the guide width at the bottom portion in the depth direction of the guide groove formed on the upper surface of the guide base is wider than the width of the fitting and is the same as the width of the annular groove portion of the guide roller.

4. A metal fitting separation device according to any one of claims 1 to 3, wherein the outer circumferential edge of the wedge-shaped rotating blade has an annular wedge portion consisting of a tip portion formed at an acute angle and a base portion formed on the central side of the wedge-shaped rotating blade at a larger angle than the tip portion.

Images