JP2005297116A - Grinding method and grinding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adjust a clearance dimension between a sash bar and a sash bar, by improving a grinding machine of a system using an endless annular belt for connecting a large number of sash bars 20 by a link chain 19. <P>SOLUTION: A disk, a ring or a cylinder (both are unillustrated) for forming a trough by winding the endless annular belt, are detachably constituted. An inner diameter dimension of the trough is adjusted by being replaced in response to a shape dimension of a grinding object by preparing various disks, rings or cylinders having a large diameter and a small diameter. When a diametral dimension becomes small, a clearance dimension G1 between the sash bar and the sash bar contracts as the figure (A), and when the diametral dimension becomes large, a clearance dimension G2 expands as the figure (B). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a method and an apparatus for polishing by projecting a polishing material onto a workpiece, and in particular, an improved technique for performing an appropriate cleaning process according to the properties of the object to be polished. Is to provide.

As a prior art closest to the present invention, there is a “continuous object conveying and rotating device” disclosed in Japanese Patent Application Laid-Open No. Sho 62-127971.
FIG. 8 is a copy of a drawing published in Japanese Patent Laid-Open No. 62-127971. FIG. 8A is an overall perspective view corresponding to FIG. 1 of the same gazette, and FIG. It is an expansion perspective view of the board piece currently drawn by (2).
The pair of guide rollers 2a and 2c are supported by a shaft 3ac, and the pair of guide rollers 2b and 2d are supported by the shafts 3b and d. The endless annular belt 1 is wound around the pair of guide rollers 2a and 2c, the pair of guide rollers 2b and 2d, and the lower idler roller 4 and further pressed by a ring 5 to form a trough 9 (this As described above in the prior art, it is not limited to a ring but may be a disk or a cylinder).

The trough is a groove having a semicircular arc-shaped cross section and recessed upward, into which an object to be cleaned (not shown) is placed.
As the endless annular belt 1 rotates, the object to be polished rolls. Abrasive material is projected from above by the abrasive material projector 10 or the abrasive material is sprayed from the abrasive material injection nozzle 11.
Reference numeral 6 is a guide roller driving motor, 7 is a chain, and 8 is a driven (driven side) sprocket.
A large number of plate pieces (also called ribs) 1 a are implanted in the endless annular belt 1. These many plate pieces 1a are arranged so as to be different from each other as shown in FIG.
The small object to be scanned rolls between the plate pieces 1a like a maze, and the large object to be cleaned rolls on the plate piece.

As an improvement that simplifies the structure without degrading the performance of the known polishing apparatus shown in FIG.
FIG. 9 shows an embodiment of a polishing apparatus according to Japanese Patent Application No. 2003-170354, which is a copy of FIG.
Driven by the sprockets 15a to 15d, the endless annular belt 1 circulates as indicated by arrows b, c, b ', d. Abrasive material is projected from the abrasive material projection machine 10 onto an object to be polished (not shown) placed in the trough 9.
The projected abrasive material is collected and collected by the screw conveyor 17A and the screw conveyor 17B after colliding with the object to be polished.
The trapezoidal ribs 12 in FIG. 9 are configured to abut against each other as compared to a large number of plate pieces (ribs) in FIG.
The minimum curvature of the trough 9 is restricted by the mutual contact of the trapezoidal ribs 12, and the inner diameter D of the trough is automatically regulated. As a result, the ring or disc 5 in the embodiment of FIG.
Japanese Patent Laid-Open No. 62-127971 JP 2003-170354 A

Prior to the two prior arts, a wide endless annular belt made of rubber was used, and this belt had a number of holes. The projected abrasive is dropped and collected from the hole, and the object to be polished is selected to be larger than the hole diameter.
In the prior art (see FIG. 9), the abrasive is leaked and collected from the gaps between the many crosspieces 20 connected by the link chain 19.
The above holes and gaps must be smaller than the object to be polished, and allow the abrasive to pass through. For this reason, the endless annular belt has to be replaced in accordance with the shape and dimension of the object to be cleaned.

Replacing and replacing the endless annular belt not only requires a great deal of time and labor, but it is economically expensive to prepare various endless annular belts for replacement in advance, and the storage warehouse costs are not small.
The present invention has been made in view of the above circumstances, and the object of the present invention is to arbitrarily adjust the size of the “hole or gap for passing the abrasive” provided in the endless annular belt. In providing technology.

The configuration of the inventive method according to claim 1 (see FIG. 2) is to attach both ends of a large number of crosspieces (20) to a bendable endless annular member to form a wide endless annular belt,
Wrap the endless annular belt around a “disk, ring, or cylinder” and “at least two pulleys or sprockets”, and stretch the U-shaped cross section.
The object to be cleaned is put into the trough (9) formed by the U-shaped recess, and the abrasive is projected from above while rotating the object to be rotated by rotating the endless annular belt. In the method of cleaning,
In advance, multiple types of large-diameter and small-diameter disks, rings, or cylinders (cylindrical side screw 23 in the embodiment of FIG. 2) are prepared, and these are attached and detached to change the inner diameter of the trough. By adjusting the curvature of the endless annular belt that forms the trough, the “interval between adjacent bars” is controlled.

According to the method of the invention of claim 1 described above, the diameter dimension of the trough can be changed by replacing the “ring, disc, or cylinder” forming the trough without replacing the endless annular belt. Thus, an appropriate gap dimension can be obtained by utilizing the gap dimension (gap dimension between the crosspieces) accompanying the change in curvature.
That is, it is possible to adjust the gap size to an appropriate size according to the shape dimension of the workpiece so that the workpiece is not caught in the gap, and the abrasive can be collected smoothly. it can.
This function and effect cannot be obtained by a conventional rubber endless annular belt, but can be obtained only by using an endless annular belt in which a number of bars are connected by a link chain (or a similar member).

In addition to the constituent features of the inventive method of the first aspect, the configuration of the inventive method according to the second aspect (see FIG. 5) is “on the inner circumferential surface of the trough of the crosspiece forming the endless annular belt. The ridge-shaped guide rib (25) is fixed to the “corresponding side surface”,
And, a large number of guide ribs fixed to each of a large number of crosspieces are arranged in a spiral on the inner peripheral surface of the trough, and arranged so that adjacent guide ribs wrap,
The object to be cleaned is rolled in the trough direction by the spiral formed by the arrangement of the guide ribs while rolling the object to be polished by the circumferential rotation of the belt.

According to the method of the invention of claim 2 described above, the object to be cleaned in the trough is smoothly fed while rolling.
The structure of providing a spiral feed guide in the trough is well known, and it is also known to plant guide ribs on the crosspieces, but with a new structure of `` wrapping guide ribs provided on the crosspieces '' The object to be polished can be smoothly fed while rolling without being caught.

The configuration of the invention method according to claim 3 is the same as the configuration of the invention method according to claim 2 (see FIG. 5B). The guide rib (25) and the guide rib (25) are fixed to the bar. Auxiliary guide ribs (27) consisting of protrusions shorter than the guide ribs are provided in between,
Guide the material to be swollen in contact with the guide rib in a direction away from the guide rib,
It is characterized in that the distribution density of the object to be polished is made uniform in the longitudinal direction of the crosspiece.

According to the method of the invention of claim 3 described above, in an abrading machine provided with a guide rib according to the prior art, the object to be polished that tends to gather near the guide rib is automatically scraped and evenly distributed. Can be dispersed. For this reason, the projected abrasive material is applied to the object to be cleaned without waste, and the object to be polished is not blocked by the other object to be polished, so that the abrasive material is not blocked. Will improve.

In addition to the constituent features of the inventive method of the second aspect, the configuration of the inventive method according to the fourth aspect (see FIG. 1) is to attach a protection bar (26) along the edge of the crosspiece (20). By
It is characterized in that the object to be polished is prevented from being fitted while allowing the abrasive to pass through the gap between the adjacent bars.

According to the method of the invention of claim 4 described above, the object to be polished can be prevented from being caught in the gap while leaving a gap through which the abrasive can pass between the bars.
The above action has a great practical effect in relation to “the fact that the gap dimension between the crosspieces can be adjusted” according to the present invention.

In addition to the constituent features of the inventive method of the first aspect, the configuration of the inventive method according to the fifth aspect (see FIG. 6) is the place where “two pulleys or sprockets” around which the endless annular belt is wound are installed. A difference in height is provided, a high position sprocket 15H and a low position sprocket 15L are provided, and the height of the left and right walls of the U-shaped trough (9) formed by the endless annular belt (1) is differentiated.
It is characterized in that the object to be studied is introduced from the lower side of the trough side wall (see the object to be studied chute 28).

According to the method of the invention of claim 5 described above, the object to be cleaned can be introduced from the side of the trough, which is advantageous for the design of the processing line of the equipment including the sharpener.
In addition, it is economical that the abrasive material can be prevented from popping out and the number of crosspieces constituting the endless annular belt can be reduced.

The configuration of the inventive device according to claim 6 (see FIG. 2) is that a wide endless annular belt (1) is formed by attaching both ends of a number of crosspieces (20) to an endless annular member that can be bent. And
In the polishing apparatus provided with a “disk, ring, or cylinder” for forming the trough (9) by winding the endless annular belt,
It is equipped with multiple types of large and small diameter “discs, rings, or cylinders” (cylindrical side screw 23 in FIG. 2), which can be attached and detached.
By replacing with a “disk, ring, or cylinder” with a different diameter, the inner diameter of the trough changes, and with this, the distance between adjacent bars (see FIG. 1, reference numerals G1, G2) ” It is characterized by changing.

According to the invention device of the sixth aspect described above, the inventive method according to the first aspect can be easily implemented and the effects can be sufficiently exhibited.
That is, by exchanging the “ring, disc, or cylinder” forming the trough, the diameter of the trough is changed without exchanging the endless annular belt, and the gap dimension (the crosspiece with the change in curvature) is changed. An appropriate gap dimension can be obtained using the gap dimension between the rail and the crosspiece. That is, it is possible to adjust the gap size to an appropriate size according to the shape dimension of the workpiece so that the workpiece is not caught in the gap, and the abrasive can be collected smoothly. it can.
This function and effect cannot be obtained by a conventional rubber endless annular belt, but can be obtained only by using an endless annular belt in which a number of bars are connected by a link chain (or a similar member).

In addition to the constituent features of the inventive device of claim 6, the configuration of the inventive device according to claim 7 (see FIG. 5) is provided with a guide rib (25) protruding toward the inside of the trough on the endless annular belt. And
When viewed as the whole endless annular belt, a large number of guide ribs are arranged in a spiral,
And the guide rib provided in the adjacent crosspiece is lapping mutually on the trough inner peripheral surface.

According to the invention device of the seventh aspect described above, the object to be cleaned is smoothly fed while rolling by the action of the many guide ribs arranged in the trough protruding spiral shape.
The structure of providing a spiral feed guide in the trough is well known, and it is also known to plant guide ribs on the crosspieces, but with a new structure of `` wrapping guide ribs provided on the crosspieces '' The object to be polished can be smoothly fed while rolling without being caught.

The invention according to claim 8 includes the guide rib (25) and guide rib (25) fixed to one crosspiece (20) (see FIG. 5 (B)) in addition to the constituent features of the invention apparatus of claim 7. 25) is provided with an auxiliary guide rib (27) made of a ridge shorter than the guide rib,
The object to be polished bounced off by the guide rib is guided in a “direction away from the guide rib” by the auxiliary guide rib, and is uniformly distributed between the two guide ribs.

According to the apparatus of the invention described in claim 8 described above, in the scouring machine provided with the guide ribs of the prior art, the to-be-squeezed material that tends to gather near the guide ribs is automatically scraped and evenly distributed. Since it can be dispersed, the projected abrasive is applied to the object to be polished without waste, and the work efficiency is improved.

In addition to the structural requirements of the inventive device of the first aspect, the configuration of the inventive device according to the ninth aspect (see FIG. 1) includes a plurality of crosspieces (20) forming the endless annular belt,
A protective bar (26) covering the space between adjacent bars is attached,
It is characterized in that the object to be polished is not sandwiched between the crosspieces, leaving a gap allowing the abrasive to pass.

According to the invention apparatus of the ninth aspect described above, it is possible to prevent the object to be polished from being caught in the gap while leaving a gap through which the abrasive can pass between the bars.
The above action has a great practical effect in relation to “the fact that the gap dimension between the crosspieces can be adjusted” according to the present invention.

In addition to the constituent elements of the inventive device of the sixth aspect, the configuration of the inventive device according to the tenth aspect (see FIG. 6) wraps the endless annular belt (1) to form a U-shaped trough (9). The height difference between the two pulleys or sprockets is provided, and the height of the walls on both sides of the trough is different.
In addition, a means (28) for feeding the object to be cleaned is provided on the lower side of the trough wall, and an anti-pinch plate (30) is provided so as to face and separate from the lower trough wall. It is characterized by that.

According to the invention apparatus of the tenth aspect described above, since the height difference is provided in the height of the trough wall, the object to be cleaned can be introduced from the lower trough side. This is advantageous for the design of the processing line of the equipment including the sharpener.
In addition, it is economical that the abrasive material can be prevented from popping out and the number of crosspieces constituting the endless annular belt can be reduced.
In addition, because the anti-pinch plate is provided, “the object to be swept up by being swung up along the taller trough wall and thrown toward the lower trough wall” However, there is no possibility of being pinched between the crosspieces of the endless annular belt.

  In addition to the structural requirements of the inventive device of the eighth aspect, the configuration of the inventive device according to the eleventh aspect (refer to FIG. 7) A protrusion that is covered with rubber or urethane, or a similar flexible and tough material (rubber cover 29 in the example of FIG. 7), and acts as the auxiliary guide rib (27) on the covering member. The strip (29r) is integrally provided continuously.

According to the invention device of the eleventh aspect described above, even the object to be cleaned formed of a relatively soft material can be rolled in the trough without fear of being damaged.
For this reason, even if the endless annular belt is made of steel from the relationship between strength and durability, it is possible to sharpen non-ferrous metal workpieces. Further, even a workpiece having a relatively soft coating film can be cleaned without damaging the coating.

According to the method of the invention of claim 1, by changing the “ring, disk, or cylinder” forming the trough without changing the endless annular belt, the diameter of the trough is changed and the curvature thereof is changed. An appropriate gap dimension can be obtained by utilizing the gap dimension (gap dimension between the crosspieces) associated with the change in the number of bars.
That is, it is possible to adjust the gap size to an appropriate size according to the shape dimension of the workpiece so that the workpiece is not caught in the gap, and the abrasive can be collected smoothly. it can.

According to the method of the invention of claim 2, the object to be polished in the trough is smoothly fed while being rolled.
The structure of providing a spiral feed guide in the trough is well known, and it is also known to plant guide ribs on the crosspieces, but with a new structure of `` wrapping guide ribs provided on the crosspieces '' The object to be polished can be smoothly fed while rolling without being caught.

According to the method of the invention of claim 3, in the scouring machine provided with the guide rib of the prior art, the to-be-squeezed material that tends to gather near the guide rib can be automatically scraped and uniformly dispersed. it can. For this reason, the projected abrasive material is applied to the object to be cleaned without waste, and the object to be polished is not blocked by the other object to be polished, so that the abrasive material is not blocked. Will improve.

According to the method of the invention of claim 4, it is possible to prevent the object to be polished from being caught in the gap while leaving a gap through which the abrasive can pass between the crosspiece.
The above action has a great practical effect in connection with the fact that the gap size between the crosspieces can be adjusted according to the present invention.

According to the fifth aspect of the invention, the object to be polished can be introduced from the side of the trough, which is advantageous in designing the machining line of the equipment including the abrading machine.
In addition, it is economical that the abrasive material can be prevented from popping out and the number of crosspieces constituting the endless annular belt can be reduced.

According to the sixth aspect of the present invention, the inventive method according to the first aspect can be easily carried out and the effects can be sufficiently exhibited.
That is, by exchanging the “ring, disc, or cylinder” forming the trough, the diameter of the trough is changed without exchanging the endless annular belt, and the gap dimension (the crosspiece with the change in curvature) is changed. An appropriate gap dimension can be obtained using the gap dimension between the rail and the crosspiece. That is, it is possible to adjust the gap size to an appropriate size according to the shape dimension of the workpiece so that the workpiece is not caught in the gap, and the abrasive can be collected smoothly. it can.
This function and effect cannot be obtained by a conventional rubber endless annular belt, but can be obtained only by using an endless annular belt in which a number of bars are connected by a link chain (or a similar member).

According to the seventh aspect of the present invention, the object to be polished is smoothly fed while rolling by the action of a large number of guide ribs arranged in a trough protruding spiral.
The structure of providing a spiral feed guide in the trough is well known, and it is also known to plant guide ribs on the crosspieces, but with a new structure of `` wrapping guide ribs provided on the crosspieces '' The object to be polished can be smoothly fed while rolling without being caught.

According to the invention apparatus of claim 8, in the scouring machine provided with the guide rib of the prior art, the to-be-squeezed material which has a strong tendency to gather near the guide rib can be automatically scraped and uniformly dispersed. As a result, the projected abrasive material can be applied to the object to be studied without waste, and the object to be studied is not shielded from the abrasive material behind other objects to be studied, All the objects to be cleaned are uniformly cleaned, improving work efficiency.

According to the ninth aspect of the present invention, it is possible to prevent the object to be polished from being caught in the gap while leaving a gap through which the abrasive can pass between the crosspiece.
The above action has a great practical effect in relation to “the fact that the gap dimension between the crosspieces can be adjusted” according to the present invention.

According to the apparatus of the tenth aspect of the present invention, since the height difference is provided in the height of the trough wall, the object to be cleaned can be introduced from the side of the lower trough. This is advantageous for the design of the processing line of the equipment including the sharpener.
In addition, it is economical that the abrasive material can be prevented from popping out and the number of crosspieces constituting the endless annular belt can be reduced.
In addition, because the anti-pinch plate is provided, “the object to be swept up by being swung up along the taller trough wall and thrown toward the lower trough wall” However, there is no possibility of being pinched between the crosspieces of the endless annular belt.

According to the invention of the eleventh aspect, even an object to be cleaned formed of a relatively soft material can be rolled in the trough without fear of being damaged.
For this reason, even if the endless annular belt is made of steel from the relationship between strength and durability, it is possible to sharpen non-ferrous metal workpieces. Further, even a workpiece having a relatively soft coating film can be cleaned without damaging the coating.

FIG. 2 is a schematic front view of one embodiment of the device of the present invention.
An endless annular belt 1 is wound around a sprocket 15 to form a trough 9 (details will be described in the next paragraph). Reference numeral 22 denotes a belt drive motor.
17A and 17B are screw conveyors for collecting the abrasive, 18 is a bucket conveyor,
10 is a sharpening material projector, and 24 is a carry-out screw.
The object to be polished is inserted from the object to be cleaned entrance 21 and is put into the trough 9, and while being rolled by the revolution of the endless annular belt 1, the abrasive material is projected from the abrasive material projector 10 and polished. Swept away.
The scouring material that has performed the scouring action falls and is collected by the screw conveyor 17A, sent in the depth direction of the figure by the screw conveyor 17B, collected by the bucket conveyor 18, and circulated for reuse.

In the prior art shown in FIG. 8, a ring or disk (which may be a cylinder) 5 is used to form the trough by using the endless annular belt 1, and in the prior art shown in FIG. 9, the ring or disk is used. Was omitted.
In the present invention, a ring, a disk, or a cylinder for forming a trough is used (in FIG. 2, a cylindrical side screw 23 is provided.
This side screw member is a known member, and forms a trough on the endless annular belt 1 wound around the side screw, and also functions as a means for carrying in the object to be cleaned.

In the present invention, a plurality of types of side screws 23 having a large diameter and a small diameter are prepared in advance, and the inner diameter dimension of the trough is adjusted by attaching and detaching the side screw 23 according to the shape dimension of the object to be cleaned.
3A and 3B show a state in which the inner diameter of the trough is changed by exchanging the side screw. FIG. 3A is a side view schematically illustrating a state in which the inner diameter of the trough 9 is enlarged, and FIG. It is the side view which drawn the state made to do typically.
When the endless annular belt 1 is wound around the large side screw 23L as shown in FIG. 5A, a trough 9 having a large inner diameter is formed. When the endless belt 1 is wound around the small side screw 23S as shown in FIG. 'Is formed.
What is important in the present invention is not the inner diameter of the trough itself, but the change in the size of the gap between the crosspiece as the trough inner diameter changes.

FIG. 1 is a view for explaining the change in the gap size of a plurality of crosspieces connected by a link chain. FIG. 1A shows the distance between the crosspieces by reducing the radius of curvature (R1). FIG. 5B is a schematic diagram depicting a reduced state, and FIG. 5B is a schematic diagram depicting a state in which the radius of curvature (R2) is enlarged and the distance between the crosspieces is extended.
As can be easily understood from FIG. 1, when the endless annular belt is wound around a large side screw, the gap dimension between the crosspiece and the crosspiece is enlarged. The gap dimension between them is reduced. In the present embodiment, the gap size of the crosspiece is adjusted using this phenomenon.
As can be inferred from the above structural functions, a ring or disc 5 shown in FIG. 8 is used in place of the side screw which is a cylindrical member, and various types of rings or discs are prepared. The distance between the crosspieces can be adjusted by replacing them.

Reference numeral 26 shown in FIG. 1 is a protection bar. This member is an elongate member having a length in the depth direction in the figure, and is fixed to one edge of the crosspiece 20 to cover the gap between the adjacent crosspieces halfway. Covering half here means leaving a gap that allows the abrasive to pass through.
This prevents the object to be polished from being caught in the gap without hindering the recovery of the abrasive.
According to the present invention, it is possible to adjust the gap dimension between the crosspieces. However, when the gap dimension is increased, there is a possibility that the object to be cleaned is sandwiched between them. The protective bar 26 eliminates this fear.

FIG. 4 is a partially enlarged perspective view of the crosspiece shown in FIGS.
A large number (for example, 45, four in this figure) of crosspieces 20 are connected by a link chain 19. Visible in the child's figure is the side that is on the inside when the trough is formed. Guide ribs 25 are planted on this surface.
A plurality of guide ribs 25 are arranged per one cross, and when the cross 20 forms a trough, the guide ribs 25 are arranged in a spiral.
Similarly, FIG. 5 shows a crosspiece constituting an endless annular belt, (A) is a plan view illustrating the components shown in the perspective view in FIG. It is the perspective view which drew the crosspiece partially.

As shown in FIG. 5A, the arranged guide ribs 25 are slightly overlapped with the adjacent guide ribs. As a result of the inventor's test research, by providing the above wrap, the object to be scanned rolls smoothly (arrow r).
Compared to the prior art plate piece 1a shown in FIG. 8B, the guide rib 25 of this example is similar in appearance to one member, but exhibits completely different actions depending on the difference in arrangement.
As described in the publication, the prior art plate 1a rolls a small object to be scanned like a maze. Compared to this, the guide rib 25 of the present invention feeds the object to be polished by screw in the trough direction (circumferential axis direction).

As shown in FIG. 5 (A), the object to be studied rolls along the guide rib 25 as indicated by an arrow r, so that the space between the two guide ribs 25 provided on one bar (E). Of these, the tendency to gather in the area C on the left of the figure is shown.
Therefore, as shown in FIG. 5B, an auxiliary guide rib 27 having a shorter height than the guide rib 25 is provided between the two guide ribs 25, and the object to be cleaned (not shown) is separated from the guide rib 25. To "direction".
The extent to which the auxiliary guide rib 27 is short is such that the rolling object can get over.
As a result, the object to be polished is uniformly dispersed between the guide 5 and the guide rib, and can be efficiently cleaned.

FIG. 6 is a side view schematically showing still another embodiment. Two low-position sprockets 15L and high-position sprockets 15H having different heights are arranged.
For this reason, the heights of the left and right walls of the trough 9 are different.
A to-be-sweeped chute 28 is provided on the lower wall (left side in this embodiment), and the to-be-sweeped material is thrown over the lower wall. This facilitates the introduction of the object to be polished and prevents the abrasive from being dissipated.
An anti-pinch plate denoted by reference numeral 30 is installed facing the lower wall of the trough 9.
The to-be-sweeped object which is about to roll as indicated by the arrow w in the trough falls on this pinching prevention plate, so there is no possibility of being pinched between the crosspieces of the endless annular belt.

FIG. 7 is a partial cross-sectional view of a bar with a guide rib in an embodiment of the present invention.
Guide ribs 25 are planted on the inner surface when the crosspieces form the trough. Covering this inner surface, a cover made of a flexible and tough material is attached, glued or baked.
Here, “flexible” means that the Mohs hardness is lower than that of the object to be polished, and means that the object to be polished is not scratched. It means no damage.
For example, automobile tire rubber is a flexible and tough material.
In this embodiment, the rubber cover 29 is bonded. An auxiliary guide rib 29r is integrally connected to the rubber cover.

It is shown in order to explain the change of the gap size of many crosspieces connected by the link chain, and (A) shows a state in which the radius of curvature (R1) is reduced to reduce the interval dimension between the crosspieces. FIG. 4B is a schematic diagram illustrating a state in which the radius of curvature (R2) is enlarged and the distance between the crosspieces is extended. The typical front view of 1 embodiment of the device of the present invention. The state where the inner diameter of the trough is changed by exchanging the side screw is shown. (A) is a side view schematically illustrating the state where the inner diameter of the trough 9 is enlarged, and (B) is the state where the inner diameter of the trough 9 is reduced. The side view drawn typically. FIG. 4 is a partially enlarged view of the crosspiece shown in FIGS. 4A shows a crosspiece constituting an endless annular belt, FIG. 4A is a plan view illustrating the components shown in the perspective view of FIG. 4 and FIG. 4B is a partial view of one crosspiece in an embodiment different from the above. The perspective view drawn. Furthermore, the side view drawn typically which shows different embodiment. The fragmentary sectional view of the crosspiece with a guide rib in one embodiment of the present invention. It is a copy of the drawing published in Japanese Patent Laid-Open No. Sho 62-127971, (A) is an overall perspective view corresponding to FIG. 1 of the same publication, and (B) is drawn in FIG. (A) above. The expansion perspective view of the board piece which is. Schematic diagram showing an embodiment of a scouring apparatus according to the technology of the row (Japanese Patent Laid-Open No. 2001-372985).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Endless annular belt 3a, 3b ... Guide roller 3ac, 3db ... Shaft 4 ... Lower idler roller 5 ... Ring or disc 5 (cylinder may be sufficient)
6 ... Drive motor 7 ... Chain 8 ... Sprocket 9 ... Trough
10 ... Abrasive projection machine
11 ... Abrasive spray nozzle
12 ... Trapezoidal rib
15 ... Sprocket
15H ... High position sprocket 15L ... Low position sprockets 15a to 15d ... Sprocket 16 ... Hopper
17A, 17B ... Screw conveyor 18 ... Bucket conveyor
19 ... Link chain
20 ... pier
21 ... Things to be studied
22 ... Belt drive motor
23 ... Side screw
23L ... Large side screw
23S ... Side screw small
24 ... Unloading Screw
25 ... Guide rib
26 ... Protective bar
27 ... Auxiliary guide rib
28 ... Scrubbing chute 29 ... Rubber cover 29r ... Auxiliary guide rib 30 ... Workpiece pinching prevention plate

Claims (11)

Attach both ends of a number of crosspieces (20) to an endless annular member that can be bent to form a wide endless annular belt,
Wrap the endless annular belt around a “disk, ring, or cylinder” and “at least two pulleys or sprockets”, and stretch the U-shaped cross section.
The object to be cleaned is put in the trough (9) formed by the U-shaped recess, and the abrasive is projected from above while rotating the object to be rotated by rotating the endless annular belt. In the method of cleaning,
An endless annular belt forming a trough is prepared in advance by preparing multiple types of "disks, rings, or cylinders" having a large diameter and a small diameter, and adjusting the inner diameter of the trough by attaching and detaching them. A polishing method characterized by controlling the "interval distance between adjacent crosspieces" by changing the curvature. A ridge-shaped guide rib (25) is fixed to the “surface corresponding to the inner peripheral surface of the trough” of the crosspiece forming the endless annular belt,
And, a large number of guide ribs fixed to each of a large number of crosspieces are arranged in a spiral on the inner peripheral surface of the trough, and arranged so that adjacent guide ribs wrap,
2. The scouring method according to claim 1, wherein the object to be scoured is rolled by the circumferential rotation of the belt, and is screwed in the trough direction by a spiral formed by the arrangement of the guide ribs. Between the guide rib and the guide rib fixed to the crosspiece, an auxiliary guide rib made of a protrusion that is shorter than the guide rib is provided,
Guide the material to be swollen in contact with the guide rib in a direction away from the guide rib,
3. The cleaning method according to claim 2, wherein the distribution density of the object to be polished is made uniform in the longitudinal direction of the crosspiece. By attaching a protective bar (26) along the edge of the bar (20),
2. The scouring method according to claim 1, wherein the scoured material is prevented from being fitted in a gap between adjacent crosses while allowing the scouring material to pass therethrough. The difference in height between the left and right walls of the U-shaped trough (9) formed by the endless annular belt is provided by providing a difference in height at the installation location of “two pulleys or sprockets” around which the endless annular belt is wound. ,
The polishing method according to claim 1, wherein the object to be cleaned is introduced from a lower side of the trough side wall. A wide endless annular belt (1) is formed by attaching both ends of a number of crosspieces (20) to an endless annular member that can be bent,
In a polishing apparatus comprising a “disk, ring, or cylinder” in which the endless annular belt is wound to form a trough,
Equipped with multiple types of large and small diameter “discs, rings, or cylinders” that can be removed and replaced.
By replacing with a “disk, ring, or cylinder” with a different diameter, the inner diameter of the trough changes, and the “interval between adjacent bars” changes accordingly. A sharpening device characterized by The endless annular belt is provided with a guide rib (25) protruding toward the inside of the trough,
When viewed as the whole endless annular belt, a large number of guide ribs are arranged in a spiral,
The polishing apparatus according to claim 6, wherein guide ribs provided on adjacent bars on the inner circumferential surface of the trough are wrapped with each other. Between the guide rib (25) fixed to one crosspiece (20) and the guide rib (25), there is provided an auxiliary guide rib (27) made of a protrusion that is shorter than the guide rib,
The object to be polished bounced off by the guide rib is guided in a "direction away from the guide rib" by the auxiliary guide rib, and is uniformly distributed between the two guide ribs. The cleaning device described. Each of a number of crosspieces (20) forming the endless annular belt,
A protective bar (26) covering the space between adjacent bars is attached,
The polishing apparatus according to claim 1, wherein an object to be cleaned is not sandwiched between the crosspieces, leaving a gap that allows the abrasive to pass through. There is a difference in height between two pulleys or sprockets where the endless annular belt (1) is wound to form a U-shaped trough (9), and the height of the walls on both sides of the trough Are different,
In addition, a means (28) for feeding the object to be cleaned is provided on the lower side of the trough wall, and an anti-pinch plate (30) is provided so as to face and separate from the lower trough wall. The polishing apparatus according to claim 6, wherein: The side of the crosspiece (20) corresponding to the inner peripheral surface of the trough is covered with rubber, urethane, or a similar flexible and strong material, and the covering member is covered with the auxiliary member. 9. A scouring device according to claim 8, wherein the ridges (29r) acting as the guide ribs (27) are integrally connected.

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