JPH0677899B2 - Molded product finishing device - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a molded product finishing device used for removing burrs from a molded product.

[Prior art]

Conventionally, as a molding product finishing device of this type used for removing burrs from a molding product, as shown in FIG. 9, the molding product is put into a polishing basket 2 and the polishing basket 2 is rotated. Along with this, there is provided a product in which a blast material, which is a granular abrasive, is sprayed onto the molded product to polish the molded product with the blast material to remove burrs. Polishing basket 2
Has a sieve formed so that the molded article does not pass through but the blasting material passes through, and the blasting material is sprayed onto the molded article from above the polishing basket 2 by the invera 7 through the sieve of the polishing basket 2. To be The molded product and the shot material are agitated in the polishing basket 2, and the burr and the shot material that have dropped down through the sieve of the polishing basket 2 are separated by the screen 8, and then the burr collection box 19 and the shot material are separated. It is housed in each of the collection boxes 17 and 17. The blast material collected in the blast material recovery box 17 is sent to the impeller 7 again and circulated for use. In the projection material, in the path from the projection material recovery box 17 to the impeller 7, the steam generated from the steam generator 9 adheres to the peripheral surface, and burrs and dust adhere to the projection material during stirring in the polishing basket 2. It is designed to be easy to be done.

[Problems to be Solved by the Invention]

In the molded product finishing apparatus having the above configuration, it is necessary to put the molded products together into the polishing basket 2 to remove burrs, and then to take out the molded products in the polishing basket 2 together. The work to remove is a batch work. Therefore, the step of molding the molded product and the step of removing the burrs are not continuous, and it is not possible to automate these two steps without relying on manpower. Also, since it is a batch operation, it is more efficient to finish as many molded products as possible in one operation, so a polishing basket 2 with a large diameter is used. As shown in (1), the fall distance when the molded product is agitated with the rotation of the polishing basket 2 becomes large. As a result, the molded product is more likely to be cracked or chipped, resulting in a higher defective product rate. Further, when the diameter of the polishing basket 2 becomes large, the distance until the shot material discharged from the impeller 7 collides with the molded product becomes long, so that there is a problem that the effect of deburring by spraying the shot material becomes small. . The present invention is intended to solve the above-mentioned problems, and enables the continuous between the molding step and the finishing step without relying on human labor, and the occurrence of defects such as cracks or chips of the molded product. It is intended to provide a molded product finishing device capable of reducing the above-mentioned problem.

[Means for Solving the Problems]

In order to achieve the above object, the configuration of claim 1 includes a polishing basket into which a molded product is placed, and a projection gun for spraying a polishing projection material onto the molded product in the polishing basket. The polishing basket has a raceway surface that has a vertical cross section that forms at least a part of an arc and into which the molded product is inserted.Move the raceway surface in the direction in which the molded product is raised and dropped. Mix the molded product and the shot material, and on the raceway surface,
A sieving is formed to allow the shot material to pass through while leaving the molded product, and a transfer means for transferring the molded product in a direction orthogonal to the vertical plane is formed so as to project in a shape inclined in a certain direction intersecting the vertical plane. Then, a static electricity removing device for removing static electricity of the molded product is formed in the vicinity of the end of the polishing basket. In the structure of claim 2, the projection gun is arranged so that the direction in which the projection material is ejected changes. According to the structure of claim 3, the polishing basket is formed in a cylindrical shape having both ends in the axial direction opened and a sieve on the peripheral face, and the transfer means is spiral on the inner peripheral face of the polishing basket. It is a spiral blade protruding from. According to the structure of claim 4, the polishing basket is formed on the outer surface of both ends of the sieving net so that the sieving net forms a substantially U-shaped orbit with the sieving net open to the side. It consists of a pair of rings that abut each other, and a plurality of rollers that abut on the inner surface of the sieve mesh and hold the sieve mesh together with the ring.By rotating some of the rollers, the sieve mesh moves in a fixed direction. Configured to rotate to
The transfer means is a plurality of feed guides provided on the outer peripheral surface of the sieving mesh so as to be inclined at a plurality of positions in a predetermined direction intersecting the vertical plane. According to the structure of claim 5, in addition to the structure of claim 4, the projection gun is arranged in a U shape formed by a sieving net, and at least a molded product is located near a position where the molded product falls away from the sieving net. It is arranged so that it can be sprayed.

[Action]

According to the structure of claim 1, since the transfer means is formed in the polishing car, the molded product is transferred while deburring is being performed in the polishing car. Then, the flow work of introducing and discharging the molded products one after another is performed. As a result, it is not necessary to perform the deburring work as a batch work, and the molding process and the finishing process can be continued without relying on human labor. Further, since it is not a batch operation, it is possible to reduce the diameter of the polishing basket, and it is possible to reduce the occurrence of defects such as cracking or chipping of the molded product. In addition, since a static electricity removing device for removing static electricity of the molded product is formed near the end of the polishing basket, it is possible to efficiently remove powdered polishing scraps and projectiles adhering to the surface of the molded product due to static electricity. For deburring while performing deburring while transferring the molded product from the start end to the end of the polishing basket that is well separated, to remove the powdery polishing waste and deburring that occurred in the polishing basket during deburring It is possible to discharge the molded product from which the used shot material is removed from the end of the polishing basket. According to the second aspect of the present invention, the ejection direction of the projection material by the projection gun changes, so that the projection material is sprayed on the entire molded article, and deburring can be efficiently performed. The configurations of claims 3 and 4 are examples of desirable forms of the polishing basket. According to the configuration of claim 5, the projection gun can be brought closer to the molded product, so that if the ejection pressure is the same, the spraying force of the shot material with respect to the molded product is increased, and the deburring effect is enhanced. Furthermore, since the projection gun is arranged so that the shot material can be sprayed at least near the position where the molded article falls, the sprayed force of the shot material onto the molded article can reverse the molded article, and Prevents the molded product from sliding down along the peripheral surface of the basket and eliminates the condition that only one surface of the molded product is polished, so that the polishing is performed uniformly over the entire surface of the molded product. To do.

[Embodiment 1] As shown in FIG.
Is provided, and the take-out cylinder 12 is provided at the other end of the housing 1. A polishing basket 2 and a separation cylinder 3 are arranged between the input cylinder 11 and the extraction cylinder 12. Also, the molded product to be polished is supposed to be a plate for wiring equipment, which is mainly formed of thermosetting synthetic resin, but if the projection material or the projection pressure of the projection material is changed, it can be made of metal. It can also be applied to molded products. The polishing basket 2 is formed in a cylindrical shape with both axial end surfaces open, and has peripheral walls formed with sieves.
A rotating shaft 21 is attached to one end of the polishing basket 2 arranged so that the axial direction is horizontal (see FIG. 2), and the rotating shaft 21 is supported by a bearing 13 provided in the housing 1. To be done. A belt 15 for transmitting the rotation of the motor 14 fixed to the housing 1 to the polishing basket 2 is provided at the other end of the polishing basket 2.
Is hung around. Therefore, when the motor 14 rotates,
The polishing basket 2 is driven to rotate in a fixed direction. The sieving mesh does not allow a molded product that requires deburring to pass through, but is formed to a size that allows a blast material and burrs to be sprayed for polishing to pass through. As shown in FIG. 2, a spiral blade is formed on the inner peripheral surface of the polishing basket 2 with one end close to the take-out cylinder 12 left for a predetermined length.
A plurality of flexible hoses 24 each having a projection gun 23 attached to one end thereof are disposed above the portion of the polishing basket 2 in which the spiral blades 22 are formed in which the hoses 22 are formed.
An intermediate portion of 24 is fixed to a frame 16 attached to the housing 1. The other end of each hose 2 is connected to the outlet of an impeller (not shown) that pressurizes the shot material. The shot material is formed in a granular shape as in the conventional case, and is sprayed onto the molded product in the polishing basket 2 through the projection gun 23 and agitated with the molded product in the polishing basket 2 to form a molded product. To remove the burr. Further, the shot material that has dropped down through the sieve of the polishing basket 2 is collected in the shot material collecting box 17 and sent to the impeller for circulation as in the conventional device. According to the above-mentioned configuration, the molded product introduced into the polishing basket 2 from the charging cylinder 11 is agitated in the polishing basket 2 by the rotation of the polishing basket 2 and is agitated on the inner peripheral surface of the polishing basket 2. The formed spiral blades 22 are sent in the axial direction from the end near the input cylinder 11 to the end near the take-out cylinder 12, and during this time, the projection material is sprayed from the projection gas 23 and the projection material The burr is removed by being agitated together with the polishing basket 2. Projection gun
Since 23 is attached to one end of a flexible hose 24, as shown in FIG. 3, the hose 24 swings due to the discharge pressure that discharges the projection material from the projection gun 23.
The shot material can be sprayed onto the molded product from various directions. The molded product is sent to the separation cylinder 3 through the opening of the polishing basket 2 near the extraction cylinder 12. The separating cylinder 3 is a polishing basket 2
The upper and lower chambers are separated from each other via a mesh sieve 31 which is inclined downward toward the take-out cylinder 12. The upper side of the mesh sieve 31 is continuous with the take-out tube 12, and the lower side of the mesh sieve 31 is a blast material collection box 17
In succession. That is, the molded product and the shot material sent out from the polishing basket 2 are separated by the mesh sieve 31. The molded product is taken out of the housing 1 through the take-out tube 12 by being left on the upper surface side of the mesh sieve 31. The blast material and burrs fall through the sieve of the mesh sieve 31 and below the mesh sieve 31, and are collected in the blast material collection box 17. Here, as shown by the chain double-dashed line in FIG. 1, a static electricity removing device 4 is provided, and a molded product is formed at one end of the polishing basket 2 near the take-out cylinder 12 and where the spiral blade 22 is not formed. The static electricity removing air is blown so as to remove the static electricity, and by this, the powdery polishing waste and the projection material adhered to the surface of the molded product by the static electricity are efficiently separated. According to the above-mentioned configuration, since the spiral blade 22 is provided on the inner peripheral surface of the polishing basket 2, the molded product is sent in the axial direction of the polishing basket 2 as the polishing basket 2 rotates. By introducing the molded product from one end of the polishing basket 2 in the axial direction and discharging the molded product from the other end, deburring of the molded product can be performed continuously rather than in a batch operation. The finishing process can be continuously performed without human intervention. For example, as shown in FIG. 4, belt conveyors 5 and 6 are arranged between the above-mentioned molded product finishing apparatus A and a plurality of molding machines B, and the molded products taken out from each molding machine B correspond to each other. It is transferred to the belt conveyor 6 by the belt conveyor 5 and is transferred by the belt conveyor 6 to the input cylinder 11 of the finished product finishing device A. In this way, the process between the molding process and the finishing process of the molded product can be automated, and the work efficiency is significantly improved compared to the conventional batch work. The finished molded product taken out from the molded product finishing device A is stored in the product container C and sent to the next step. In addition to the advantages described above, the molded product finishing apparatus of the present embodiment does not perform a batch operation, so that the polishing basket 2
The radius of gyration can be reduced, and the drop distance of the molded product due to the rotation of the polishing basket 2 can be reduced, so that the frequency of cracking or hanging of the molded product can be reduced. Moreover, since the diameter of the polishing basket 2 becomes smaller, the projection gun 23 can be brought closer to the molded product. Therefore, if the ejection pressure of the projection material is the same, the impact force on the molded product becomes large. The polishing efficiency is improved. Further, since the diameter of the polishing basket 2 becomes small, the molded product is agitated many times, and the projection gun 23 swings, so that the projection material is sprayed almost uniformly over the entire surface of the molded product. This leads to stabilization of the finished quality of the molded product.

Second Embodiment The basic structure of this embodiment is the same as that of the first embodiment, but the structure of the polishing basket 2 is different. That is, as shown in FIGS. 5 to 7, the polishing basket 2 has an endless sieving net 25 formed in the shape of a wide band and having a length equal to or larger than the width of the sieving net 26. Two driving rollers 26a, 26b and two guide rollers 26c, 26d arranged inside the 25, and a pair of rings 27 abutting on both widthwise ends of the outer surface of the sieving net 25, respectively. ing. Drive rollers 26a, 26b, guide rollers 26c, 26d, rings
27 is arranged so that the screen 25 is in contact with the outer circumferential surface of the ring 27 over a substantially half circumference of the ring 27 to form a substantially U-shaped cross section. On the outer surface of the sieving net 25, feed guides 28 made of rubber or the like are provided at approximately equal intervals on one imaginary line forming a spiral when the sieving net 25 is formed into a cylindrical shape. Both ends of the drive rollers 26a, 26b and the guide rollers 26c, 26d are rotatably supported by bearings 13 provided in the housing 1, and a pulley 18 is attached to one end of each of the drive rollers 26a, 26b. The belt 15 is wound around the pulley 18, and the drive rollers 26a and 26b are rotationally driven by the motor 14. Therefore, when the motor 14 rotates, the drive roller
2a and 26b rotate, and the sieving net 25 rotates in the direction shown by the arrow in FIG. That is, the molded product and the projectile placed on the polishing basket 2 are carried from the lower surface of the substantially U-shaped portion opened to the side toward the curved side surface, drop from the side surface and return to the lower surface. The molded product and the shot material are agitated. As a result, although the polishing basket 2 is partially open, the molded product does not spill out of the polishing basket 2. Further, since the feed guide 28 is formed on the outer peripheral surface of the sieving net 25 as described above, the sieving net 25
As the product rotates, the molded product and the shot material are sent in one direction orthogonal to the paper surface of FIG.
The molded product put in is sent to the take-out cylinder 12. By the way, since the polishing basket 2 is formed into a substantially U-shaped cross section, as shown in FIG. 8, the projection gun 23 for ejecting the projection material can be inserted into the polishing basket 2. The distance between the injection port of the shot material and the molded product can be made closer than in Example 1, and the effect of abrasion due to the injection of the shot material can be further enhanced. Here, the projection gun 23 is arranged so that the spraying direction changes, but at least in the polishing basket 2, the projection material is sprayed near the position where the molded product falls apart from the peripheral surface of the polishing basket 2. Is able to. This allows the molded product to be reversed,
The front and back of the molded product can be sufficiently polished and the deburring effect is enhanced. Further, since a part of the polishing basket 2 is opened, it is possible to deburr a large-sized molded product with a comparatively small volume. Even if the device is downsized, even a large-sized molded product can be efficiently removed. It can be polished. The separation cylinder 3 is omitted in this embodiment.

【The invention's effect】

As described above, in the configuration of claim 1, since the transfer means is formed in the polishing basket, the molded product is transferred while deburring is being performed in the polishing basket. A work flow is performed in which the molded products are successively introduced into the polishing basket and then discharged. As a result, there is an advantage that it is not necessary to carry out the deburring work as a batch work, and the molding process and the finishing process can be continuously performed without resorting to manual labor. Also, since it is not a batch operation, it is possible to reduce the diameter of the polishing basket and reduce the occurrence of defects such as cracks and chips in the molded product. Since a static electricity removing device for removing static electricity is formed, powdery grinding dust and projectiles adhering to the surface of the molded product due to static electricity can be efficiently separated, and from the beginning to the end of the polishing basket. Deburring is performed while the molded product is being transferred and discharged from several ends. A molded product in which the powdery polishing waste generated by deburring in the polishing basket and the projection material used for deburring have been removed. There is an effect that can be discharged from the end portion of the polishing basket. According to the configuration of claim 2, the change of the spraying direction of the projection material by the projection gun causes the projection material to be sprayed over the entire molded product, which is advantageous in that deburring can be efficiently performed. . According to the configuration of claim 5, the projection gun can be brought closer to the molded product, so that if the ejection pressure is the same, the spraying force of the shot material with respect to the molded product is increased, and the deburring effect is enhanced. Furthermore, since the projection gun is arranged so that the shot material can be sprayed at least near the position where the molded article falls, the sprayed force of the shot material onto the molded article can reverse the molded article, and Prevents the molded product from sliding down along the peripheral surface of the basket and eliminates the condition that only one surface of the molded product is polished, so that the polishing is performed uniformly over the entire surface of the molded product. There is an effect of doing.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment of the present invention, FIG. 2 is a perspective view of relevant parts of the same, FIG. 3 is an operation explanatory view of the same as above, and FIG. 4 is an example of a production line using the same. FIG. 5 is a schematic configuration diagram on the front side showing Embodiment 2 of the present invention, FIG. 6 is a schematic configuration diagram on the side surface side of the same, FIG. 7 is a perspective view of essential parts of the same, and FIG. Is an operation explanatory view of the above, FIG. 9 is a sectional view of a conventional example, and FIG. 10 is an operation explanatory view of the same. 2 ... polishing basket, 22 ... spiral blade, 23 ... projection gun,
25 …… Sieving net, 26a, 26b …… Drive roller, 26c, 26d ……
Guide roller, 27 …… ring, 28 …… feed guide.

Claims (5)

[Claims] 1. A polishing basket, into which a molded product is loaded, and a projection gun for spraying a polishing projection material onto the molded product in the polishing basket, wherein the polishing basket has a vertical cross section. It has a raceway surface formed into a shape that forms at least a part of a circular arc and into which a molded product is introduced, and moves the raceway surface in a direction in which the molded product is raised and dropped, and the molded product and the projection material are stirred, On the raceway surface, a sieve is formed that allows the shot material to pass through while leaving the molded product, and is projected so as to incline in a certain direction intersecting the vertical plane and transfers the molded product in the direction perpendicular to the vertical plane. And a static electricity removing device for removing static electricity of the molded product near the end of the polishing basket. 2. The molded product finishing apparatus according to claim 1, wherein the projection gun is arranged so that the direction in which the projection material is ejected is changed. 3. A polishing basket is formed in a cylindrical shape with both ends in the axial direction being open and having a sieve on the peripheral face, and the transfer means is projected on the inner peripheral face of the polishing basket so as to form a spiral. The device for finishing a molded product according to claim 1, which is a spiral blade provided. 4. The polishing basket comprises an endless belt-shaped sieving net and an outer surface of both ends of the sieving net so that the sieving net forms a laterally open U-shaped orbit. It consists of a pair of abutting rings and a plurality of rollers that hold the sieve mesh together with the rings by abutting on the inner surface of the sieve mesh.By rotating some of the rollers, the sieve mesh moves in a certain direction. It is constituted so that it may be rotated, and the transfer means is a plurality of feed guides that are provided at multiple locations on the outer peripheral surface of the sieving mesh so as to incline in a certain direction that intersects the vertical plane, respectively. 1. The molded product finishing device according to 1. 5. The projection gun is a U formed by a sieve net.
5. The molded product finishing device according to claim 4, wherein the molded product finishing device is arranged in the shape so that the blast material can be sprayed at least near a position where the molded product falls apart from the sieving net.