JPH0623438A - Work outer shape forming device - Google Patents

Abstract

PURPOSE:To provide a work outer shape forming device by which the defect of roll abutting system is resolved, the generation of a wrinkle and crack on the formed part is eliminated and an excellent forming is carried out using a simple method in which the work is rotated and the outer circumference of the rotated work is pressurized and abutted. CONSTITUTION:A pressurizing body 4 which is abutted on the outer circumference of the rotating work 2 is freely separably provided to the work 2. Using this device, the outer shape of the work is formed to coincide with the circumference of an inner die 1 by abutting the pressurizing body 4 on the work by pressing. The abutting part of the pressurizing body 4 is formed to be an arcuate hold-abutting part 5 which is abutted on a specific range R of the outer circumference of the work 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work external shape forming apparatus for pressing and abutting a pressing body against a rotating work so as to deform and form the work into an outer shape conforming to an inner peripheral surface of an inner die disposed in the work. Is.

[0002]

2. Description of the Related Art For example, when forming a lid for a kettle as shown in FIG. 1, a work 2 having a shape as shown in the upper left diagram of FIG.
A work outer shape forming apparatus will be described as an example, in which a so-called edge winding is formed as shown in the upper right figure, and is completed as a kettle lid as shown in the lower figure of the figure.

In such so-called edge winding molding, an inner die is arranged in the work and the work is rotated by rotation.

In this device, a roller or a ball is applied as a pressing member to the outer peripheral surface of the rotating work to deform and form the work into an outer shape that matches the inner surface of the inner mold.

[0005]

However, the conventional method of applying a roller or a ball to apply processing is simpler than the method of pressing or the like, however, the processed portion is wrinkled or cracked. In many cases, there is a problem that the molding process does not go well.

Like the conventional example, the present invention is a simple method in which the work is rotated and the outer peripheral surface of the rotating work is pressed and abutted, and the drawbacks of the roller abutment method are solved, and molding processing is performed. (EN) Provided is a work external shape forming device which can be deformed and formed extremely excellently without wrinkling or cracking of a portion.

[0007]

The gist of the present invention will be described with reference to the accompanying drawings.

The inner mold 1 is arranged in the work 2, and the rotating mechanism 3 for rotating the work 2 is provided. The pressing body 4 abutting on the outer peripheral surface of the rotating work 2 can be separated from the work 2. A workpiece outer shape forming apparatus for deforming and forming the work 2 into an outer shape conforming to the peripheral surface of the inner mold 1 by pressing the work 4 against the work 2.
The workpiece contact portion of the workpiece 2 with a predetermined range R on the outer peripheral surface of the workpiece 2.
The present invention relates to a work external shape forming device characterized in that it is formed on the arcuate embracing abutting portion 5 that is in face-to-face contact with.

[0009]

Operation: The pressing body 4 moves with respect to the work 2, and the pressing body 4
The arc-shaped holding contact part 5 formed on the work contact part of
The contact pressure is applied so as to hold a predetermined range R of the outer peripheral surface of the. The work 2 is held by the arcuate holding contact portion 5 and the inner peripheral surface of the inner mold 1 inside the work 2, and the work 2 is deformed and shaped into a shape that matches the inner peripheral surface of the inner mold.

As shown in the upper diagram of FIG. 6, the conventional roller 6
In the pressing and abutting method according to the above, when the roller 6 is pressed and abutted against the work 2 as shown in the above figure (b) from the state of contact as shown in the above figure (a), the work 2 is pressed against the roller 6 at that moment. Be immersive.

Since the work 2 is continuously rotating, it is deformed and shaped into a shape (small diameter) that matches the inner surface of the inner mold as shown in FIG.

On the other hand, according to the present invention, as shown in FIG. 2A, the arcuate holding contact portion 5 which is in contact with the predetermined range R of the outer peripheral surface of the work 2 is pressed and brought into contact, and as shown in FIG. When the arc-shaped holding and abutting portion 5 is pressed and abutted, the predetermined range R of the work 2 is wholly depressed, and is deformed and formed as shown in FIG.

Therefore, this is a face-to-face contact method having a longer contact distance than the so-called conventional point contact pressing method.

Therefore, the work material efficiently extends to reduce the diameter, and since the contact distance (predetermined range R) is long, this also acts as a guide and causes wrinkles and cracks as in the conventional case. It will be deformed and molded satisfactorily.

[0015]

EXAMPLE In this example, when forming a lid of a kettle as shown in FIG. 1, a work 2 having a shape as shown in the upper left diagram of FIG.
Is a work external shape forming apparatus to which the present invention is applied when a so-called curled wire is formed as shown in the upper right figure to complete a kettle lid as shown in the lower figure.

In this embodiment, a mounting recess 8 for mounting the work 2 is formed on the upper surface of the rotary seat 7 of the rotating mechanism 3, and a flat plate-shaped pressing member is horizontally slidable above the mounting recess 8. 4, an opening 9 having a diameter larger than that of the work 2 is formed in the pressing body 4, and an annular plate 11 is rotatably attached to the inner edge of the opening 9 via a bearing 10.

The inner diameter of the annular plate 11 is designed to be slightly larger than the outer shape of the work 2 so that the annular plate 11 is arranged above the placing recess 8.

An annular inner surface of the mounting concave portion 8 within an arbitrary predetermined range serves as an arcuate holding contact portion 5 of the pressing body 4 which comes into contact with a predetermined range R of the outer peripheral surface of the work 2.

The inner mold 1 is rotatably provided and can be inserted and separated (ascended and descended) in the mounting recess 8.

Also, a pressing curved projecting surface 12 is provided on the lower end of the inner mold 1.
And a shape determining outer peripheral surface 13 is formed on the upper peripheral surface of the pressing curved protruding surface 12.

Therefore, in this embodiment, the work 2 is placed on the placement recess 8 from the annular plate body 11, the inner mold 1 is lowered in this state, and the work 2 is pressed by the pressing curved protruding surface 12 of the inner mold 1. Attach and fix.

When the rotary mechanism 3 is operated, the rotary seat body 7 rotates, and the work 2 rotates together with the inner mold 1 accordingly.

When the pressing body 4 slides horizontally in this state, the annular plate body 11 which is the arcuate holding contact portion 5 of the pressing body 4 is moved.
The predetermined range is pressed against the predetermined range R of the rising portion 2a (deformation forming part) of the work 2 in a held state.

At this time, as the work 2 rotates, the annular plate body
11 also rotates.

When the pressing contact of the inner surface of the annular plate body 11 which is the arcuate holding contact portion 5 is advanced by the movement of the pressing body 4, the work 2
The rising portion 2a is pressed and deformed until it comes into contact with the shape-determining outer peripheral surface 13 of the inner mold 1, and is molded.

Since the pressing curved protruding surface 12 of the inner mold 1 is configured to press its own rotation center at a position eccentric from the rotation center of the mounting recess 8, the inner mold 1 is also formed after the molding.
Can be lifted upward as it is.

In this embodiment, when the inner mold 1 is raised, the work 2 is locked only on one side by the step portion of the pressing curved protruding surface 12 of the inner mold 1 and the outer peripheral surface 13 for determining the shape, and the inner mold is held in a cantilever state. The work 2 is pulled up with the rise of 1.

The present invention is not limited to this embodiment, and the present invention can be applied as an alternative method to so-called bulging.

For example, when a container such as a pot is deformed as shown in the right diagram of FIG. 7, conventionally, a bulge processing method as shown in the left diagram of the same figure is adopted.

That is, the cylindrical work 2 is fitted on the rubber 14, and the rubber 14 is vertically compressed by the powerful press device 15.

Then, the rubber 14 bulges laterally, and the bulge is received by the split mold 16 to curve-form the cylindrical work 2.

However, such bulging requires a large pressing force, and the split mold becomes large.
In addition, the rubber is severely worn, and there is a problem due to a strong return force of the rubber, which causes various problems.

On the other hand, if the present invention is applied as shown in FIG. 8, the bending of the cylindrical work 2 is performed by rotating the cylindrical work 2 in the same manner as in the above embodiment, and the cylindrical work is rotated. A predetermined range R of the outer peripheral surface of the work 2 is brought into surface contact with the arcuate holding contact portion 5 in a held state, and press-deformed.

According to the method of the present invention, there is no problem due to the bulging process, and a very simple method can be used to form a pot having excellent forming precision without bearings such as wrinkles and cracks in the formed portion.

[0035]

Since the present invention is configured as described above, since it is a face-to-face contact method having a longer contact distance than the so-called conventional point contact pressing method in which pressure is formed by rollers, balls, etc., work materials can be efficiently produced. Since it extends to reduce the diameter, and the contact distance (predetermined range R) is long, this also serves as a guide function, and it can be favorably deformed and molded without causing wrinkles or cracks as in the conventional case. .

That is, as in the conventional example, this is a simple method in which the work is only rotated and the outer peripheral surface of the rotating work is pressed and abutted, and the drawbacks of the roller abutment method are solved, and the forming and processing section is wrinkled. It becomes a work external shape forming device that can be deformed and formed extremely well without being damaged or cracked.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a work and a molded product of this embodiment.

FIG. 2 is a perspective view of a main part of this embodiment.

FIG. 3 is a plan view of a main part of this embodiment.

FIG. 4 is a front sectional view of a main part of this embodiment before molding.

FIG. 5 is a front sectional view of a main part of this embodiment after molding.

FIG. 6 is an explanatory diagram of molding in comparison with a conventional example of this embodiment.

FIG. 7 is an explanatory view showing an example of bulge processing of a conventional container.

FIG. 8 is an explanatory diagram when the present invention is applied instead of the bulge processing shown in FIG. 7.

[Explanation of symbols]

 1 Inner die 2 Work piece 3 Rotation mechanism 4 Pressing body 5 Arcuate holding contact part R Predetermined range

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[Procedure amendment]

[Submission date] August 19, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

The inner mold 1 is arranged in the work 2, and the rotating mechanism 3 for rotating the work 2 is provided. The pressing body 4 abutting on the outer peripheral surface of the rotating work 2 can be separated from the work 2. A work external shape forming device for pressing and abutting the pressing body 4 on the work 2 to deform and form the work 2 into an outer shape matching the inner surface of the inner die 1.
The workpiece contact portion of the workpiece 2 with a predetermined range R on the outer peripheral surface of the workpiece 2.
The present invention relates to a work external shape forming device characterized in that it is formed on the arcuate embracing abutting portion 5 that is in face-to-face contact with.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

Operation: The pressing body 4 moves with respect to the work 2, and the pressing body 4
The arc-shaped holding contact part 5 formed on the work contact part of
The contact pressure is applied so as to hold a predetermined range R of the outer peripheral surface of the. The arc-shaped holding and abutting portion 5 and the outer peripheral surface of the inner mold 1 in the work 2 hold the work 2, and the work 2 is deformed and shaped into a shape matching the outer peripheral surface of the inner mold 1.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

Therefore, in this embodiment, the work 2 is placed in the placement recess 8 through the opening 9, the inner mold 1 is lowered in this state, and the work 2 is pressed by the pressing curved protruding surface 12 of the inner mold 1. Fix it.

Claims (1)

[Claims] 1. An inner die is provided in a work, a rotation mechanism is provided for rotating the work on its own axis, and a pressing body that comes into contact with the outer peripheral surface of the rotating work is provided so as to be separable from the work. A work external shape forming device for pressing and abutting a body to deform and shape the work into an outer shape that matches the inner peripheral surface of the work, wherein the work contact portion of the pressing body is a predetermined range of the outer peripheral surface of the work. An outer shape forming apparatus for a work, which is formed on an arcuate embracing abutting portion that is in contact with the workpiece.