JPH11207712A - Potter's wheel device for ceramic art - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor-driven potter's wheel device whose rotary table can be manually rotated by a potter with his clay work placed on the rotary table whenever this necessity arises. SOLUTION: This potter's wheel device B is equipped with a rotary table 2, installed in a freely rotatable manner, on a casing 11, a drive motor 6 for rotating the rotary table 2 and an operating handle 30 for disconnecting the drive motor 6 with the rotary table 2. In this case, after the disconnection of the drive motor 6 with the rotary table 2, this disconnection state can be maintained by the traction force of a pulling spring 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a potter's wheel apparatus for rotating a pottery table electrically, which can rotate the pottery table manually when necessary.

[0002]

2. Description of the Related Art In recent years, a potter's wheel apparatus for electrically rotating a pottery table on which a work is placed has been widely used. FIG. 7 shows an example of a potter's wheel apparatus A having a configuration in which the table is electrically rotated. Reference numeral 1 denotes a casing of a potter's wheel main body on which a rotary table 2 for pottery is rotatably mounted via a bearing 3 on an upper surface. In the vicinity of the outer peripheral edge of the rotary table 2, a cylindrical projecting piece 4 is integrally formed downward.

[0005] Reference numeral 5 denotes a mounting frame installed in the casing 1, and the mounting frame 5 is firmly fixed and supported by a driving motor 6 using a known fixing means such as a tightening screw. A non-slip member 8 made of a material having a high frictional resistance, such as rubber, is fixed to the tip of the rotor shaft 7 of the driving motor 6, and the non-slip member 8 is formed at the lower part of the periphery of the rotary table 2. The inner peripheral surface a of the overhanging piece 4 is always in sliding contact.

A tension spring 9 is provided between the mounting frame 5 for fixing and supporting the driving motor 6 and the inner wall of the casing 1, and the mounting frame 5 is mounted on the casing 1 side (rightward direction in FIG. 7). ), The non-slip member 8 of the drive motor 6 fixed to the mounting frame 5 is slidably (pressed) against the inner peripheral surface a of the overhanging piece 4 of the rotary table 2. .

When driving the potter's wheel lathe A, when a power switch 10 attached to the side wall of the casing 1 is turned on, a current is supplied to the drive motor 6 from a commercial power supply (not shown), and the drive motor 6 is turned on. 6 rotates the rotor shaft 7. A non-slip member 8 is attached to the tip of the rotor shaft 7, and the non-slip member 8 is pressed and held by the extension piece 4 of the rotary table 2 by the pulling force of the tension spring 9. By rotating the rotor shaft 7, the rotary table 6 can rotate satisfactorily without slipping the rotary table 2.

[0006]

However, the conventional potter's wheel apparatus A shown in FIG. 7 is designed to prevent the rotor shaft 7 from slipping between the rotary table 2 and the rotary table 2.
Since the non-slip member 8 is always brought into contact with the overhanging piece 4 of the turntable 2 by the pulling force of the extension spring 9, for example, when it is desired to rotate the turntable 2 slightly and view the work from another angle, A person must rotate the drive motor 6 via the non-slip member 8 by rotating the turntable 2, and the turntable 2 receives a large frictional force and can be easily rotated. Did not. Therefore, when looking at a work from another point of view, the potter must change his work position or rotate the work itself to cope with this, which is very time-consuming and There was a risk that the shape of the work would be deformed when rotating.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a potter's wheel apparatus which can easily rotate a rotary table on which a work is placed by manual operation when necessary.

[0008]

According to a first aspect of the present invention, there is provided a potter's wheel apparatus provided with a cylindrical protruding piece on an outer peripheral edge of a rotatable table rotatably mounted on an upper surface of a casing. Attaching a non-slip member provided on the rotor shaft of the motor, a mounting frame for supporting and fixing the motor is formed by notching a plurality of side end surfaces of the extension plate with a mounting groove and an engaging groove, and the mounting groove is formed in the mounting groove. Engages a support member slidably attached to the bottom plate of the casing, slidably engages a lock bar attached to the tip of an operation handle protruding on the bottom plate of the casing, and further engages with the engagement groove. An operation handle provided between the extension plate and the casing, a tension spring for urging the extension plate in a direction in which the lock bar engages with the engagement groove, and the lock bar is provided on a lower surface of the casing; So that the extension plate is rotated by engaging and disengaging Characterized in that was.

According to a second aspect of the present invention, there is provided a potter's wheel apparatus for pottery, wherein a resin-based sliding member having a small surface frictional resistance is interposed in a notch step formed at the center in the longitudinal direction of the supporting member. The sliding groove is slidably engaged with the mounting groove.

In the potter's wheel apparatus of the present invention, a lock bar connected to an operation handle is engaged with an engagement groove provided in an extension plate of an attachment frame for fixing and supporting a drive motor. Since the contact between the non-slip member fixed to the rotor shaft of the motor and the rotary table can be released, the potter can easily operate the non-slip member with the overhanging piece by operating the operation handle. Can be released, so that the rotary table can be easily rotated manually.

[0011]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. 1 to 6, the same components as those in FIG. 7 are denoted by the same reference numerals. FIG. 1 shows a potter's wheel apparatus B of the present invention. A pottery turntable 2 is rotatably supported by bearings 3 on an upper surface of a casing 1 of a potter's wheel body. In the vicinity of the outer peripheral edge of the turntable 2, a cylindrical projecting piece 4 is formed in a downward direction.
Is formed integrally with the turntable 2, and the inner peripheral surface a of the overhanging piece 4 is fixed to the tip of the rotor shaft 7 of the driving motor 6, and is made of a material having a high frictional resistance, such as rubber. The non-slip member 8 is always in sliding contact.

FIG. 2 is a plan view of the potter's wheel apparatus B of the present invention as viewed from above. In FIG. 2, reference numeral 11 denotes a box-shaped mounting frame in which the driving motor 6 is fixed and supported on the bottom by a tightening screw 12, and the bottom side of the mounting frame 11 (FIG.
(In the vertical direction), an extension plate 13 for mounting the mounting frame 11 is integrally formed. Reference numeral 14 denotes a plurality of (four in FIG. 2) U-shaped cutout grooves provided on the end surface of the extension plate 13, and a support member 15 and a fulcrum member 15a fixed to the bottom plate 1a of the casing 1. Is mounted so that it can slide horizontally.

FIG. 4 is a sectional view showing a state in which the support member 15 is supported in the mounting groove 14. Hollow metal cylinder 16
A support member 15 formed by fastening a rubber material 17 having a vertical cross section E-shape to the outer peripheral surface of the casing 1 is fastened and fixed on a bottom plate 1a of the casing 1 by bolts 18 and nuts 19, and the length direction of the support member The mounting groove 14 of the extension plate 13 forms a predetermined clearance (gap) b in the notch step portion 20 formed in the center portion, with a resin-based sliding member 21 having a small surface frictional resistance such as plastic interposed therebetween. And held.

The metal cylinder 16 is supported by a support member 15 shown in FIG.
Even when a compressive force acts in the vertical direction, the extension plate 13 slides into the notch step 20 while maintaining a sufficient clearance b between the notch step 20 and the mounting groove 14 of the extension plate 13. It can be installed freely.

As shown in FIG. 4 (b), the sliding member 21 is formed with a slit 23 communicating with the punching hole 22 in a part of a thin disk having a punching hole 22 formed in the center. The sliding member 21 is connected to the supporting member 1 shown in FIG.
In the case of attachment to the five notch step 20, the slit 23 of the sliding member 21 is expanded vertically (in the direction perpendicular to the paper surface in FIG. 4B), and the expanded slit 2 is expanded.
After passing through the notch step 20 of the support member 15 shown in FIG. 4A between the three, the sliding member 21 is released from the expansion of the slit 23 so that the sliding member 21 becomes the notch step 20 of the support member 15.
It can be securely attached without pulling out.

FIG. 5 is a longitudinal sectional view showing a supporting state of the fulcrum member 15a and the mounting groove 14. Hollow cylindrical mounting piece 24
As shown in FIG. 5 (a), the metal fulcrum member 25 has the mounting piece 24 protruding from the bottom plate 1a of the casing 1 to the outside. The mounting groove 14 of the extension plate 13 is slidably supported with a clearance (gap) c. Further, the fulcrum member 25 is formed by crushing the mounting piece 24 protruding from the bottom plate 1a of the casing 1 outward with a hitting means such as a hammer as shown in FIG. Is fixed on the bottom plate 1 a of the casing 1.

In FIG. 2, reference numeral 27 denotes an L-shaped hooking piece fixed to the surface of the extension plate 13, which is in contact with the L-shaped hooking piece 27a mounted on the bottom plate 1a of the casing 1. A tension spring 28 is provided between the mounting frame 11 and the fulcrum member 15.
It is always urged (pulled) counterclockwise around a.

Further, an engagement groove 29 is formed in the vicinity of the engaging piece 27 of the extension plate 13 by cutting a side end surface of the extension plate 13 into a large inverted U-shape. The lock bar 31 of the operation handle 30 attached to the lower side of
It is engaged and held movably.

FIG. 6 is a longitudinal sectional view showing a state in which the operating handle 30 and the casing 1 are mounted.
6A, a hollow cylindrical attachment piece 33 of a metal rivet 32 shown in FIG. 6A is inserted into the bottom plate 1a of the casing 1, and then, as shown in FIG. Installed by crushing to. At this time,
Since the bottom plate 1a of the casing 1 is mounted with a predetermined clearance d between the bottom plate 1a and the step 34 of the rivet 32, the operation handle 30 can freely rotate around the rivet 32 as a fulcrum.

At the tip of the operation handle 30, FIG.
As shown in (a), a screw thread 36 formed in a hollow cylindrical mounting piece 35 of the metal lock bar 31 is firmly screwed and fixed, and the tip of the mounting piece 35 is, for example, a hammer. As shown in FIG. 3B, the crushing device is crushed by the tapping means and is securely fixed to the operation handle 30. When the operation handle 30 is rotated about the rivet 32 as a fulcrum, the lock bar 31 can move along a guide hole 37 formed in the bottom plate 1a.

Next, the operation of the potter's wheel apparatus B of the present invention will be described. When the power switch 10 shown in FIG. 1 is turned on, a current is supplied to the drive motor 6 from a commercial power supply (not shown), and the drive motor 6 rotates the rotor shaft 7. A non-slip member 8 is attached to the tip of the rotor shaft 7, and the non-slip member 8 is constantly pressed and held on the overhanging piece 4 of the rotary table 2 by the pulling force of the tension spring 28. By rotating the rotor shaft 7, the rotary motor 6 can rotate satisfactorily without causing the rotary table 2 to slip.

Therefore, the potter can place the clay for pottery on the turntable 2 and thereafter automatically rotate the turntable 2 to process the clay for pottery into a desired shape. . Next, in FIGS.
Is rotated by manual operation.

When the potter rotates the rotary table 2 by manual operation, the potter turns the operation handle 30 shown in FIG. 2 in the direction of the arrow (clockwise). Slidably around the rivet 32 shown in FIG. As a result, the lock bar 31 attached to the tip of the operation handle 30 moves along the guide hole 37 formed in the bottom plate 1a as shown in FIG.
Is engaged with the engagement groove 29 while rotating the extension plate 13 clockwise about the fulcrum member 15a.

At this time, the extension plate 13 is
When the lock bar 31 is engaged with the engagement groove 29, the extension plate 13 is pulled by the tension plate 27. Due to the pulling force of the spring 28, the lock bar 31 engaged with the engagement groove 29 comes into contact with the lock bar 31 and is securely locked.
1 can be engaged and held in the engagement groove 29. As a result, the driving motor 6 mounted on the mounting frame 11
As shown in FIG. 3, the rotation of the extension plate 13 with the fulcrum member 15a as a fulcrum causes the non-slip member 8 attached to the rotor shaft 7 to be separated from the overhanging piece 4 of the rotary table 2, and The contact between the turntable 2 and the non-slip member 8 is released.

The potter can easily and manually rotate the turntable 2 on which the clay for pottery is mounted by releasing the contact between the turntable 2 and the non-slip member 8. Can be. When the rotary table 2 is rotated electrically, the state shown in FIG. 3 (the locked state of the lock bar 31) is used.
When the operation handle 30 is operated in the original direction, which is the direction of the arrow shown in FIG. 3, the lock bar 31 is disengaged from the engagement groove 29 against the traction force of the tension spring 28, and the operation handle 30 is By returning to the original position shown, the mounting frame 11 rotates counterclockwise around the fulcrum member 15a,
Returning to the position shown in FIG. 2, the rotor shaft 7 of the driving motor 6
Is again brought into contact with the overhanging piece 4 of the turntable 2. Thereby, the potter's wheel apparatus B shown in FIG. 2 can be returned to a normal use state in which the turntable 2 is rotated by electric drive.

Reference numeral 38 shown in FIGS. 1 and 7 denotes a clay receiver fitted between the upper surface of the casing 1 and the turntable 2.
The cut end of the clay generated during pottery making is received by the saucer 39, and the cut end enters the bearing 3 side by the undulating portion 40.
It is provided to prevent the above.

Since the potter's wheel pottery apparatus B of the present invention is constructed as described above, when the potter tries to rotate the turntable 2 by manual operation, the operation handle 3
0, it is possible to easily release the contact between the rotary table 2 and the non-slip member 8 on the side of the driving motor 6, and the release state is set by the potter by the pulling force of the tension spring 28. Since it can be maintained well even after the hand is released from the operation handle 30, the rotary table 2 can be freely rotated using both hands freely, which is convenient.

[0028]

According to the potter's wheel apparatus of the present invention, the slipping member for abutting the rotary table on which the clay for pottery is mounted and the drive motor can be easily separated by operating the operation handle. At the same time, since the potter can maintain this detached state even after the potter removes his / her hand from the operation handle by the pulling force of the tension spring, the potter can rotate the rotary table with both hands freely in the separated state of the rotary table. Since it is possible to modify the work, the work can be easily performed, which is convenient.

Further, in the potter's wheel apparatus according to the present invention, a plurality of mounting grooves are formed in an extension plate of a mounting frame for mounting a driving motor, and a notch step of a supporting member is interposed in the mounting groove with a sliding member. By engaging the mounting frame itself, the mounting frame itself is slid using the notch step of the support member, and the contact between the rotary table and the driving motor can be easily released,
It has become possible to provide a potter's wheel apparatus that has a simple configuration and can rotate a rotary table by manual operation.

[Brief description of the drawings]

FIG. 1 is a cutaway sectional view of a main part of a potter's wheel apparatus of the present invention.

FIG. 2 is a plan view showing a state before operating an operation handle of the potter's wheel apparatus of the present invention.

FIG. 3 is a plan view showing a state after operating an operation handle of the potter's wheel apparatus of the present invention.

FIG. 4A is a cross-sectional view showing a mounting frame supported by a support member of the potter's wheel apparatus of the present invention. (B) is a top view which shows the sliding member used when supporting a mounting frame.

FIG. 5A is a cross-sectional view showing a state before a fulcrum member of the potter's wheel apparatus of the present invention is fixed to a casing bottom plate. (B) is a cross-sectional view showing a state after the fulcrum member is fixed to the casing bottom plate.

FIG. 6A is a cross-sectional view showing a state before the operation handle of the potter's wheel apparatus of the present invention is fixed to the casing bottom plate. (B) is a cross-sectional view showing a state after the operation handle is fixed to the casing bottom plate.

FIG. 7 is a partially cutaway sectional view showing a conventional potter's wheel apparatus.

[Description of Signs] A Conventional potter's wheel potter B B Potter's wheel pottery 1 of the present invention 1 Casing 2 Rotary table 4 Overhanging piece 5, 11 Mounting frame 6 Driving motor 7 Rotor shaft 8 Slip member 9, 28 Pulling Spring 10 Power switch 13 Extension plate 14 Mounting groove 15 Support member 15a Support point member 20, 26 Notch step 21 Sliding member 27, 27a Hook piece 29 Engagement groove 30 Operation handle 31 Lock bar 37 Guide hole b, c, d Clearance (gap)

Claims (2)

[Claims] A rotary table rotatably mounted on an upper surface of a casing, provided with a cylindrical projecting piece on an outer peripheral edge thereof, and a non-slip member provided on a rotor shaft of the motor abutted against the projecting piece to form a motor. The mounting frame for supporting and fixing the mounting plate has a plurality of cutouts at the side end surfaces of the extension plate to form a mounting groove and an engaging groove, and the supporting groove slidably engages the supporting member fixed to the bottom plate of the casing. A lock bar attached to the tip of an operation handle projecting above the bottom plate of the casing is removably engaged with the engagement groove, and the lock bar is further engaged between the extension plate and the casing. A tension spring that urges the extension plate in the direction of engagement with the mating groove is interposed, and the lock bar is disengaged from the engagement groove with an operation handle provided on the lower surface of the casing to rotate the extension plate. A potter's wheel apparatus characterized by being made to make it. 2. The supporting member is slidably engaged with a mounting groove of an extension plate with a resin-based sliding member having a small surface frictional resistance interposed in a notch step formed at the center in the length direction. The potter's wheel apparatus according to claim 1, wherein