JPH0126841B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) This invention is used for potter's wheel molding of ceramics, and is used for molded products that are heavy, bag-shaped, and need to be molded tightly with sharp sides. The purpose is to provide the pottery industry with a potter's wheel pressing device that is useful for efficient production.

(Prior art) Conventional potter's wheel molding machines such as those disclosed in Japanese Utility Model Publication No. 57-57921, Japanese Utility Model Publication No. 57-47130, and Special Publication No. 57-49363 have a limit to the sliding amount of the molding iron, and In the case of containers, there were restrictions on molding because a sufficient amount could not be obtained, and it was impossible to mold bags with large bulges.

(Problems to be Solved by the Invention) This invention is characterized by the use of a potter's wheel spindle that can accurately and quickly mold the sides of a molded product, particularly sharply and densely. The aim is to develop a device.

[Structure of the invention]

(Means for Solving the Problems) The basic structure of the present invention as a means for solving the above-mentioned problems is that a potter's wheel shaft is provided on a slidable base together with a drive device, and this sliding base is driven by a cylinder. The main cam for rotation and the slide cam for pressing slide are provided on the cam shaft for rotation of the rotation arm, and the cylinder and the slide base are connected by a link mechanism, and the slide cam is movable between the molding position and the extraction position. and the slide base are connected by a slide arm, and the rotation of the rotary arm is linked with the large movement of the slide base between the molding position and the take-out position and the small movement of the pressing during molding.

(Function) To describe the function of this invention, the reversing machine connected to this device is at the rising end, the forming trowel is at the rising position, and the dowel containing the plaster mold is at the fixed position at the take-out position. When the clay is put into the plaster mold, the plaster mold on the slide base moves to the molding position with the potter's wheel shaft and drive unit, and the potter's wheel shaft and cam shaft rotate.
The molding trowel enters the plaster mold while rotating and molding begins. During this time, the potter's wheel axis continues to rotate at all times.

Next, during molding, the molding is finished by moving the potter's wheel shaft over a small range using a slide cam via a slide arm against the pushing force of the cylinder.

When molding is finished and just before the molding trowel is raised, the slide arm returns, and the cylinder slides the potter's wheel shaft to the leftmost molding position, raising the molding trowel.

Next, the potter's wheel shaft is stopped, the forming iron is placed in the raised position, the camshaft is stopped, and the potter's wheel shaft is moved by the cylinder to the take-out position. The reversing machine connected to this device descends with the clamp open, and at the descending end, the clamp simultaneously grasps the plaster mold inside the dowel and the empty plaster mold on the conveyor, and the reversing machine ascends to the ascending end. At the rising end, it turns 180 degrees and descends to the descending end, then opens the clamp, releases the empty plaster mold into the dowel, and ascends to the rising end. In addition, the plaster mold containing the molded product is transported by a conveyor, and
The plaster mold to be formed next is placed in the fixed position.

The above cycle is automatically repeated.

(Example) This invention will be explained based on the drawings of the example.
As shown in FIGS. 1 to 4, the potter's wheel type moving device 1 has a slide base 3 on one side of the upper surface of the base 2.
is attached so as to be slidable in the left and right direction (as shown in Fig. 1), and a potter's wheel spindle 5 with a dowel 4 fixed to the upper end is vertically hung on the slide base 3 so as to be freely rotatable via a potter's wheel spindle case 6. A V-belt 10 is hung between the drive pulley 8 of the potter's wheel drive motor 7 provided on the top and the driven pulley 9 provided on the outer periphery of the dowel 4 to allow free rotation.
1 pedestal 12 is provided protrudingly, and a support shaft 13 is attached to this pedestal 12.
The rotating arm 14 of the molding table 11 is rotatably attached to the rotary arm 14, and the slide roller 15 is freely rotatably attached to the rear part of the rotating arm 14 (the left part in FIG. 1). A balance weight 16 is attached to the rear end of the rotary arm 14, a forming iron mounting arm 17 is fixed to the front part of the rotating arm 14, and a forming iron drive motor 1 is attached to the tip of the forming iron mounting arm 17.
8 is attached, and a forming trowel 19 is directly connected to the lower part of this forming trowel drive motor 18 so as to be freely driven and rotatable, so that when the rotating arm 14 is lowered, the dowel 4 on the potter's wheel shaft 5 is in the forming position. so that it is almost concentric with the time.

On the other hand, a main cam 22 and a slide cam 23 are fixed coaxially to a camshaft 21 supported on a camshaft mount 20 protruding from the rear part of the base 2, and the slide roller 15 is rolled onto this main cam 22. A slide roller 26 at the rear end of an L-shaped slide arm 25 having a fulcrum 24 on the pedestal 12 is brought into contact with the slide cam 23 so that it can roll freely, and the lower end of the slide arm 25 and A pressing device 28 is formed by pivoting 27 the rear end of the slide base 3.

One end of the link 30 is pivoted 29 to the potter's wheel shaft case 6, and the upper end is pivoted 31 to the other end.The lower end of the other link 32 is pivoted 33 to a bearing 33 fixed on the floor F.
4, and the tip of the rod 37 of a cylinder 36 whose central portion is supported 35 on the side of the base 2 is pivoted 38 to the middle of the link 32 to form the moving device 1.

A reversing device 39, which will be described later, is mounted on the base 2 in connection with the moving device 1.

To explain the reversing device 39 in detail, four slide shafts 40 are installed on the other end of the base 2, and the upper ends are connected by an upper beam 41. A slide beam 42 is slidably fitted to the slide shaft 40 so as to face each other, and an elevator frame 44 rotatably supporting a reversing shaft 43 at the center is installed between the slide beams 42 and 42. A claw base 46 that can be slidably opened and closed is attached to the slide bar 45 of 44, and the claw 4 that clamps the dowel 4 is attached to the inside of both ends of the claw base 46.
7 are mounted facing each other, an opening/closing air cylinder 48 is mounted at the center between the claw bases 46, and a reversing motor 49 is mounted at the outer end of the reversing shaft 43.

In the figure, H indicates clay, D indicates a plaster mold, S indicates a molded product, and C indicates a conveyor.

[Brief explanation of drawings]

FIG. 1 is a front view of the embodiment of the present invention, FIG. 2 is a front view of the main parts thereof, FIG. 3 is a side view thereof, and FIG. 4 is a plan view of the reversing device section. (Explanation of symbols of main parts), 1: Mobile device,
2: base, 3: slide base, 4: dowel, 5: potter's wheel axis, 6: potter's wheel axis case, 7: potter's wheel drive motor, 11: molding table, 14: rotating arm, 1
5: Slide roller, 19: Molding trowel, 21:
Cam shaft, 22: Main cam, 23: Slide cam, 2
8: Pressing device, D: Plaster mold, S: Molded product.

Claims (1)

[Claims] 1. A potter's wheel shaft is rotatably mounted on a slide base that is slidably mounted on the base, and a rotation arm of the molding table is attached to the rear end of the slide base and a camshaft supported on the base. The cam and a coaxially fixed slide cam are connected via a slide arm,
A pressing device for a potter's wheel shaft, characterized in that the slide base is movable.