JPH0650406Y2 - Guide wheel device for powder conveying device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide wheel device for a powder carrying device, which originally freely rotates in conjunction with the running of a tow rope of the powder carrying device to smoothly bend the bent part of the powder carrying device. The guide foil having the function of guiding is prevented from adhering to the both sides of the guide foil and causing resistance to free rotation by a pulling rope or the like.

[0002]

2. Description of the Related Art A powder conveying device is often used in a foundry to convey bentonite used as a casting material in an appropriate amount in a timely manner. And a plurality of powder conveying plates 2 movably fitted to the rope 1 at substantially constant intervals, and a guide pipe 3 having a cross-sectional shape that substantially matches the outer contour of each conveying plate 2. The device a is often used. The powder conveying device a is provided with a guide wheel device b at a bending traveling portion thereof in order to bend and run the tow rope and the powder conveying plate from horizontal to vertical, or from one horizontal direction to the other horizontal direction. The guide wheel 4 has a thin plate shape to reduce the weight, and a plurality of continuous engaging teeth 7 swelling on both sides inside the wheel case 5 are formed on the outer periphery of the guide wheel 4. Then, the pulling ropes 1 are sequentially fitted into the respective engaging teeth 7 so that the guide wheel 4 is interlockedly rotated, and the inside of the foil case 5 is provided except for the passages of the plurality of powder transfer plates 2. Since the powder is clogged, if there is powder adhering to both side surfaces of the guide foil 4, it will rub against the powder clogged inside the foil case 5 and generate resistance to free rotation. There are drawbacks.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and it is an object of the present invention to solve the problem of positively eliminating the adhesion of powder on both side surfaces of the guide foil. It is a thing.

[0004]

A guide wheel device for a powder carrying device according to the present invention comprises a towing rope 1, a large number of powder carrying plates 2 fitted to the rope so as to be movable at a substantially constant interval, and each of them. The end portions of the guide pipes 3 and 3 are fixedly fitted to the inlet and the outlet of the foil case 5 arranged in the bending traveling portion of the powder conveying device a, which has a cross-sectional shape that substantially matches the outer contour of the conveying plate. At the same time, a plurality of engaging teeth 7 bulging in both sides in the plate width direction are continuously formed on the outer periphery of a plate-shaped wheel in which a central boss is rotatably fitted to a central shaft 6 supported by the wheel case 5, and each of them is formed. A guide groove 8 into which the pulling rope 1 is sequentially fitted is provided in the engaging teeth 7, and a V-shaped groove 9 that engages with the powder conveying plate 2 is provided between the engaging teeth 7 and Inside the foil case 5 between the guide pipes 3 and 3, the powder conveying plate 2 is provided.
In the guide wheel device b provided with the passage 10 of the above, a vortex-shaped powder removing blade 21 protruding from both side surfaces between the boss of the plate-shaped foil and each engaging tooth to the inner surface of the foil case 5 is provided. Therefore, there is an advantage that the free rotation of the guide wheel 4 can be smoothly performed.

[0005]

According to the present invention, the powder removing blades 21 which are spirally warped in the rotational direction are engaged with the boss 16 on both sides of the thin plate-shaped portion between the boss 16 at the center of the guide wheel 4 and the engaging teeth 7 on the outer periphery. Since the tooth case 7 is provided so as to project from the teeth 7 to the inner surface side of the wheel case 5, the powder that tends to adhere to both sides is pressed against the powder that is buried in the wheel case side to be eliminated, and the rotation resistance is given to the blade 21.
The thickness of the blade 21
Has the action of significantly reducing the rotational resistance due to the vortex-shaped warp.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The attached drawings show one embodiment of the present invention. FIG. 1 is a partially cutaway front view showing a case structure on one side of a wheel case 5 removed, and FIG. FIG. 3 is a perspective view of the guide foil 4 of the present invention.

In the figure, a shows a powder conveying device, which is a well-known device, and a traction rope 1 and a large number of powder conveying plates 2 fitted on the rope so as to be movable at substantially constant intervals. And a guide pipe 3 having a cross-sectional shape that substantially matches the outer contour of each of the transport plates, and the drive pipe (not shown) positively drives the tow rope at a constant speed (this speed can be varied) to guide the guide pipe. A powder supplying device (not shown) provided by cutting the upper surface of 3 supplies powder between the powder carrying plates 2 and drives the pulling rope as described above to carry and discharge it to a required place.

1 and 2 show an example of a towing rope 1 and a guide wheel device b of the present invention which is arranged at a bent traveling portion of a plurality of powder carrying plates 2 fitted on the rope, and a wheel case 5 is shown. Entrance 11 provided approximately 90 ° apart in the tangential direction
Fixing plate 1 by fitting the ends of guide pipes 3 and 3 into outlet 12
The boss 16 at the center of the thin plate-shaped foil 15 fixed by the members 3 and 14 is rotatably fitted and supported by the central shaft 6 supported by the wheel case 5, and the plate width of the outer periphery of the plate-shaped foil 15 is secured. The guide wheels 4 are formed by continuously forming a plurality of engaging teeth 7 that bulge toward the wheel case 5 on both sides in the direction. A guide groove 8 into which the pulling rope 1 is sequentially fitted is provided on the outer circumference of each engaging tooth 7, and the interval between the engaging teeth 7 is substantially constant by engaging with each powder conveying plate 2 described above. The V-shaped groove 9 to be corrected is provided, and the wheel case 5 between the guide pipes described above is further provided.
The passage 10 of the powder carrying plate 2 is provided inside the.

The present invention relates to the above-mentioned known guide wheel device b.
The bosses 16 and the engaging teeth 7 on both sides of the guide wheel 4
Between them, as shown in FIGS. 1 to 3, on the inner surface of the wheel case 5, there is provided a vortex-shaped powder removing blade 21 which projects in the direction opposite to the rotational direction. Reference numeral 22 is a through hole for reducing the weight of the guide foil 4. On the inner surface of the wheel case 5, there are guide wheels 4 and passages 10.
The powder to be conveyed is accumulated on each outer circumference and both sides of the powder, and the powder which tends to adhere to both side surfaces of the guide wheel 4 (plate-shaped wheel 15) between the boss 16 and the engaging teeth 7 is the powder to be accumulated. Friction with the body causes rotation resistance in the guide wheel 4 that rotates in conjunction with the tow rope that bends and travels, which affects the speed of the powder transfer device a and reduces the amount of powder transfer per hour from the planned amount. However, the powder removing blade 21 pushes the powder having the above-mentioned tendency to adhere to the piled powder side against the spiral shape, and the rotation resistance is limited to only the thickness of the blade. The vanes 21 significantly reduce the rotational resistance due to the vortex-shaped warp.

[0010]

The guide wheel device for a powder carrying device of the present invention comprises a towing rope 1, a large number of powder carrying plates 2 fitted to the rope 1 so as to be movable at substantially constant intervals, and each carrying plate 2 thereof. End portions of the guide pipes 3 and 3 at the inlet 11 and the outlet 12 in the tangential direction of the foil case 5 arranged in the bending traveling portion of the powder conveying device a having a cross-sectional shape that substantially matches the outer contour of the guide pipes 3. And a plurality of engaging teeth 7 bulging in both sides in the plate width direction on the outer circumference of a plate-shaped wheel 15 in which a central boss 16 is rotatably fitted on a central shaft 6 supported by the wheel case 5. A guide groove 8 into which the pulling rope 1 is sequentially fitted is formed in each engaging tooth 7, and a V-shaped groove 9 that engages with the powder conveying plate 2 is provided between each engaging tooth 7. Further, the powder carrying plate is passed through the inside of the foil case 5 between the guide pipes 3, 3 described above. In the well-known guide wheel device b provided with 10, the vortex-shaped powder expulsion protruding on both side surfaces between the boss 16 and each engaging tooth 7 of the plate-shaped wheel 15 and protruding from both side surfaces to the inner surface of the wheel case 5 The blade 21 is provided.

The powder that tends to adhere to both side surfaces between the boss 16 of the guide wheel 4 and the engaging teeth 7 rubs against the guide wheel 4 in the foil case 5 and the powder embedded on the outer circumference and side surfaces of the passage 10. It has already been explained that the guide wheel 4 rotating in conjunction with the tow rope that bends and runs causes a rotational resistance, which is a drawback that affects the speed of the powder conveying device a. The exclusion blade 21 is pressed against the powder side, which is the spiral-shaped powder having the above-mentioned tendency to adhere and is deposited on the foil case side and buried, and the rotation resistance is limited to the thickness of the blade 21.
Moreover, since the blade 21 significantly reduces the rotational resistance due to the vortex-like warp, there is an effect that the motor, the speed reducer, etc. of the carrier device a can be planned without expecting an unexpected increase in the rotational resistance.

[Brief description of drawings]

 The attached drawings show one embodiment of the present invention.

FIG. 1 is a partially cutaway front view showing a case structure on one side of a wheel case 5 removed.

FIG. 2 is an enlarged sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view of a guide wheel 4 of the present invention.

[Explanation of symbols]

a powder conveying device, b guide wheel device, 1 traction rope, 2 powder conveying plate, 3 guide pipe, 4 guide wheel, 5 wheel case, 6 central shaft, 7 engaging teeth, 8 guide groove, 9 V-shaped groove , 10 passages, 1
1 inlet, 12 outlet, 13 and 14 fixing plate, 15
Plate-shaped foil, 16 bosses, 21 (vortex-shaped) powder exclusion blades, 22 through holes

Claims (1)

[Scope of utility model registration request] 1. A powder comprising a traction rope, a large number of powder conveying plates fitted to the rope so as to be movable at substantially constant intervals, and a guide pipe having a cross-sectional shape that substantially conforms to the outer contour of each conveying plate. An end portion of the guide pipe is fixedly fitted to the entrance and the exit of the foil case arranged in the bending traveling part of the carrier, and a central boss is rotatably fitted to a central shaft supported by the foil case. A plurality of engaging teeth that bulge on both sides in the plate width direction are formed on the outer circumference, and each engaging tooth is provided with a guide groove into which the traction rope is sequentially fitted, and the powder conveying means is provided between the engaging teeth. In a guide wheel device having a V-shaped groove for engaging with a plate and further having a passage for a powder carrying plate inside the wheel case between the guide pipes described above, between the boss and each engaging tooth of the plate wheel. Vortex protruding from both sides to the inside of the wheel case on both sides A guide wheel device for a powder conveying device, characterized in that it is provided with a powder-removing blade of the shape.