JPS60138B2 - Device for forming embossed patterns on cylindrical bodies - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for forming an embossed pattern on the circumferential surface of a cylindrical body.

Conventionally, in order to form an embossed pattern or a perforated pattern on a cylindrical body, a flat plate on which a pattern has been formed in advance is formed into a cylindrical body by secondary processing.

However, with the above method, it takes a lot of work to bend the flat plate into a cylindrical shape, weld the end faces of the plate that meet in the direction of the cylinder axis when bent into a cylindrical shape, and finish the welded parts, resulting in low production efficiency and uniformity. Mass production of the product was difficult. In addition, when joints are made by bending or bending in can manufacturing, etc., the thickness of the overlapped parts of the material becomes linear, which not only impairs the aesthetics but also may cause problems in terms of functionality. Ta. In the present invention, a cylindrical body to be processed is inserted into one of a pair of embossing rollers having a symmetrical uneven pattern on the outer peripheral surface, the other is pressed against the outer surface of the cylindrical body with the pattern phase matching, and the roller is pressed. To provide an apparatus that can form an uneven pattern on the circumferential surface of a cylindrical body by rotating it in opposite directions at the same speed while maintaining support. The present invention will be specifically described below based on embodiments shown in the drawings.

1 and 2 show an apparatus of the present invention, that is, an embossing machine for cylindrical bodies, in which the base end of a movable arm 2 is rotatably pivoted to one end of a fixed frame. 1 and the lower surface of the movable arm 2, bearings 1 are provided on the upper and lower surfaces of the movable arm 2 at a predetermined distance from the center or pivot portion, respectively.
1 and 21 are provided, and each bearing 11 and 21 has a pair of embossing rollers 3 and 4 which have a longer overall length than the cylindrical body to be machined and a smaller outer diameter than the inner hole of the cylindrical body. One end is rotatably fixed to the shaft, and both rollers 3 and 4 are parallel to each other and perpendicular to the frame 1 and arm 2.

The uneven patterns 31 and 41 on the outer circumferential surface of each roller 3 and 4 can be formed directly on the roller surface by a known corrosion process, or a metal tube with an uneven pattern formed thereon can be attached to and removed from the roller shaft like a rolling machine. The uneven patterns 31 and 41 on both rollers can be matched.
The rollers 3 and 4 are formed so that they match at the converging points and are always in contact with each other.

A rotary drive device 5 is connected to both rollers 3 and 4, and although a manual type using a handle is also possible, the drawing shows an electric type. That is, a variable-speed electric motor 51 is disposed on one side of the fixed frame 1, and a transmission gear 52 and a transmission gear 53 such as a helical gear are mounted on the end of the pivot shaft 12 to operate the transmission gear. 52 and the drive gear 54 of the motor rotation shaft are connected by an endless chain, and the driven gears 32, 42 such as helical gears are fixed to the ball ends of each roller 3, 4. 42 and the transmission gear 53 are pivotally supported on the side surfaces of the frame 1 and arm 2.
5 and 56 to rotate both rollers 3 and 4 in opposite directions at the same circumferential speed. At the tip of the fixed frame, there is a gap adjustment mechanism 6 that sets the gap between the upper and lower rollers 3 and 4 to be large or small according to the thickness of the cylindrical wall of the cylindrical body to be embossed.
An operating handle 7 is provided at the tip of the movable arm 2.

However, when forming the embossing pattern on the cylindrical body 8, the gap between the upper and lower loaves 3, 4 is set appropriately in advance according to the cylindrical body 8 by the adjustment mechanism 6.

First, operate the handle 7 of the movable arm 2 to release the presser roller 4.
After releasing it above the receiving roller 3 and inserting the cylindrical body 8 to be processed onto the ball of the receiving roller 3 from the free end of the roller,
When joining the presser roller 4 to the cylindrical body 8, both rollers 3
, 4 are pressed against each other with the cylindrical wall of the cylindrical body 8 sandwiched therebetween, with the pattern phases matching. Next, rotation drive device 5
When operating, both loaves 3 and 4 are rotated in opposite directions at the same circumferential angle while maintaining constant pressure contact by the gap adjustment mechanism 6, and as shown in FIG.
The rollers 3 and 4 rotate by a rotation angle corresponding to the circumferential length of the cylinder 8 and then stop, or if they are designed so that they mesh even if they continue to rotate, the entire surface of the cylinder 8 is formed. This allows an embossed pattern to be formed on the circumferential surface.

To form a perforated pattern on the cylindrical body 8, after forming the uneven pattern 81 on the circumferential surface of the cylindrical body 8 by the method described above, the cylindrical body 8 is removed from the cylindrical body roller 3, and the cylindrical body 8 is moved as shown in FIG. Fix it to a suitable fixture and rotate it in the direction of arrow A.

Further, the whetstone 9 rotating at high speed in the direction of arrow B is connected to the cylindrical body 8.
By grinding the surface of the convex pattern 82 or 83 protruding from the outer or inner surface of the cylindrical body 8, and grinding the tip of the convex pattern, the cylindrical body as shown in FIG. A uniform perforation pattern 84 can be easily formed on the entire circumferential surface of 8. When grinding the convex pattern 82 protruding from the outer periphery of the cylindrical body 8, a round shaft that is tightly loosened on the inner surface of the cylindrical body is used as a fixture for the cylindrical body, and the grindstone 9 is applied from the outer periphery as shown in FIG.
In addition, when grinding the convex pattern 83 protruding from the periphery of the cylindrical body,
The cylindrical fixture uses a shaft with a round hole that tightly loosens the outer surface of the cylindrical body, and grinds the inner surface of the cylindrical body with an internal grinding paper stone. To whetstone. When the grinding depth of the grindstone is equal to the thickness of the cylinder wall of the cylindrical body, a perforated pattern is formed on the circumference as shown in Fig. 6, but when the grinding depth is smaller than the thickness of the cylinder wall,
It is possible to form an interesting patterned cylindrical body with holes only at the top of the convex pattern. Although the embossing machine shown in the figure is a cantilever type in which one end of the pair of loaves 3 and 4 is supported on a shaft and the other end is a free end, the present invention is not limited to this, and it is of course possible to support both ends. In this case, the end of the receiving roller 3 on the driving device side is supported on a fixed bearing, and the pond end is supported on the end of the roller 3 using a removable bearing (not shown).

In this case, the cylindrical body can be inserted into and removed from the roller, and the pressing force between the rollers 3 and 4 can be strengthened. Also, although not shown in the drawings, in implementation, a pair of rollers 3 and 4 will be used.
By providing a fine adjustment mechanism for displacing the roller 3 in the circumferential direction between the scale end of one of the rollers 3 and the driven gear 32, the pattern matching of both the rollers 3 and 4 can be finely adjusted.

As described above, the present invention includes inserting the cylindrical body 8 into one of a pair of embossing loafs 3 and 4, and pressing the other roller 4 onto the roller 3 via the cylindrical body 8 with the pattern phase matching. Since both rollers 3 and 4 can be rotated in the same direction at the same circumferential speed while maintaining pressure saddle to form an uneven pattern on the circumferential surface of the cylindrical body 8, after forming a perforated pattern on a flat plate as in the conventional case, Compared to the method of bending it into a cylinder and welding or seaming the joints, uniform products can be mass-produced efficiently.

[Brief explanation of the drawing]

Fig. 1 is a slope view, Fig. 2 is a plan view, Fig. 3 is a rear view, Fig. 4 is a front view showing how the emposu pattern is formed, Fig. 5 is a front view showing how the perforated pattern is formed, FIG. 6 is a cross-sectional view of a cylindrical body on which a perforated pattern is formed. 1...Fixed frame, 2...Movable arm, 3... ...Roller, 31...Irregular pattern, 4. ．． ．． ．． ．． ．． Laura, 41... Pattern, 5.
... Rotation drive device, 8 ... Cylindrical body, 81
...Uneven pattern, 82...Perforation pattern. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1 The base end of the arm 2 is rotatably supported on one end of the frame 1, and the frame 1 and the arm 2 are each provided with a length and a cylindrical shape corresponding to the cylindrical body to be machined at corresponding positions separated by a predetermined distance from the pivot support. One end of a pair of embossing rollers 3 and 4 having an outer diameter smaller than the inner diameter of the body is rotatably fixed, and both rollers 3 and 4 are opposed to each other at the same circumferential speed. This is a device for forming an embossed pattern on a cylindrical body, which is formed by connecting a rotary drive device 5 that rotates in a direction.