JP3107432U - Barrel tank of barrel polishing machine - Google Patents

Abstract

Disclosed is a barrel tank of a barrel polishing machine having a lining layer that has moderate flexibility, improved durability, and easy repair management.
A lining layer 4 formed on an inner surface of a barrel tank body 2 is composed of three polyurethane resin layers. The polyurethane resin layer is set so that the rubber hardness increases from the outside to the inside, and the intermediate resin layer is colored in a different color from the adjacent resin layer. The inner resin layer is formed to be hard and durability is improved, and the outer resin layer is formed to be soft and have cushioning properties. In addition, since the intermediate resin layer is colored in a different color, the wear state can be easily checked.
[Selection] Figure 1

Description

  The present invention relates to a barrel tank used in a barrel polishing machine.

  Conventionally, barrel polishing in which semi-finished products such as cast products, forged products, and punched products are put into a barrel tank together with abrasives and rotated or oscillated to remove burrs generated in the product and polish them. The machine is used.

In a barrel polishing machine, the barrel tank is a metal container, so there is a lot of noise during the rotation operation, and depending on the workpiece to be polished, there is a risk of colliding with the inner surface of the barrel tank. A cushioning material is lined on the surface. For example, Patent Document 1 describes that a lining layer in which an organic substance such as rubber or synthetic resin is attached to the inner surface of a barrel tank by a method such as fluid immersion, thermal spraying, coating, or bonding is described. . Patent Document 2 describes a barrel tank for a barrel processing machine in which a polyurethane resin lining layer is formed by spraying polyurethane resin on the inner surface of an iron tank. Further, in Patent Document 3, liquid rubber flows into the bottom surface of the polygonal tank from the polishing material inlet, and after the vulcanization, the operation of rotating the barrel tank and flowing the liquid rubber into the new bottom surface is repeated. It describes the point of deposition.
Japanese Utility Model Publication No. 46-8793 JP-A-7-148659 Japanese Patent Application Laid-Open No. 11-300596

  As described in the previous document, a lining layer made of rubber or polyurethane resin is formed on the inner surface of the barrel tank as a cushioning material, eliminating problems such as noise prevention, damage to processed products, and barrel tank rusting. However, if such a lining layer is used for a long period of time, it will gradually wear out due to the processed product or abrasive. Therefore, in order to improve the durability of the lining layer, it is conceivable to harden the rubber or polyurethane resin constituting the lining layer. However, if the lining layer becomes hard, there is a possibility that it may be damaged depending on the processed product. Flexibility is necessary and difficult to set.

  In addition, when it gradually wears out, it is necessary to repair the lining layer before the inner surface of the barrel tank body is exposed. However, as in Patent Documents 2 and 3, resin is sprayed on the worn part or liquid rubber is covered. The timing of repairs is difficult when wearing. In other words, since it is too late to repair after the inner surface of the barrel tank body is exposed to the lining layer, it will be repaired when it is considered that the lining layer has worn to some extent, and wasteful repair will be performed. For some time, repair management cannot be performed properly.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a barrel tank for a barrel polishing machine having a lining layer that has moderate flexibility, improved durability, and easy repair management.

  The barrel tank of the barrel polishing machine according to the present invention has a barrel tank main body and three or more polyurethane resin layers laminated on the entire inner surface of the barrel tank main body, and the polyurethane resin layer is an outer layer. The rubber hardness is set so as to increase sequentially from the inner layer to the inner layer, and at least one of the intermediate resin layers is colored in a different color from the adjacent layers.

  A barrel tank of another barrel polishing machine according to the present invention includes a barrel tank body, a rubber layer laminated on the entire inner surface of the barrel tank body, and one or more laminated on the entire inner surface of the rubber layer. A polyurethane resin layer, and the polyurethane resin layer has a rubber hardness higher than that of the rubber layer and is colored in a different color.

  By having the above configuration, three or more polyurethane resin layers are laminated to form a lining layer, and the rubber hardness increases as the polyurethane resin layer goes from the outside to the inside, so the inside polyurethane resin layer becomes hard As a result, the durability can be improved and the outer polyurethane resin layer can be made soft and flexible. For this reason, even when a workpiece or the like collides during use, wear is suppressed by the hard polyurethane resin layer on the inner surface side, and cushioning properties are exhibited by the soft polyurethane resin layer to prevent damage to the workpiece.

  And by coloring at least one layer of the intermediate resin layer in a different color from the adjacent layer, the layer colored in a different color is exposed by being gradually scraped from the resin layer on the inner surface side by abrasion. Then, the degree of wear can be easily recognized, and the repair timing can be easily confirmed with the naked eye.

  In addition, even when one or more polyurethane resin layers are laminated on the rubber layer to form a lining layer, the polyurethane resin layer improves durability by making the rubber hardness of the polyurethane resin layer larger than that of the rubber layer. Appropriate flexibility can be ensured by the rubber layer. In addition, by coloring the polyurethane resin layer in a color different from that of the rubber layer, if the polyurethane resin is scraped off due to wear, the rubber layer of a different color is exposed and the degree of wear can be recognized at a glance, and repair is performed. Can do.

  And repair can be easily performed by laminating | stacking a polyurethane resin, and the lifetime of a lining layer can be improved significantly.

  Here, the rubber hardness means a physical property value measured by a rubber hardness meter (such as a durometer) based on JIS K6253.

  Hereinafter, embodiments according to the present invention will be described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is intended to limit the present invention particularly in the following description. Unless otherwise specified, the present invention is not limited to these forms.

  FIG. 1 shows a schematic perspective view of an embodiment according to the present invention. In FIG. 1, the internal structure is shown in a cross-sectional view on the front side. The barrel tank 1 is a cylindrical container having a hexagonal cross section, and a rotation shaft (not shown) is attached along the central axis to rotate. In the barrel tank 1, a metal inlet 2 into which a processed product and an abrasive are introduced is opened in a part of a metal main body 2, and a lid 3 is fitted into the inlet. When the charging port is closed by the lid 3, the inside of the barrel tank 1 becomes a sealed space, and the workpiece and the polishing material charged in the inside are rubbed against each other by rotation to perform polishing.

  A lining layer 4 is formed on the entire inner surface of the main body 2. FIG. 2 is an enlarged cross-sectional view showing the laminated structure of the lining layer 4. The lining layer 4 includes three polyurethane resin layers 41, 42, and 43, and a polyurethane resin is formed on the inner surface of the main body 2. The layer 41 is laminated, the polyurethane resin layer 42 is laminated on the inner side, and the polyurethane resin layer 43 is further laminated on the inner side. The polyurethane resin layer 43 forms the inner surface of the barrel tank 1. The rubber hardness of the three polyurethane resin layers is set so that the outer resin layer 41 is the smallest, the intermediate resin layer 42 is set larger than the resin layer 41, and the inner resin layer 43 is more than the intermediate resin layer 42. Is also set larger. Therefore, the rubber hardness increases in order from the outer polyurethane resin layer to the inner polyurethane resin layer. For this reason, the innermost resin layer 43 with which the processed product or abrasive material collides is hard and has improved durability, and the resin layer becomes softer and cushioning toward the outer side, so that it can withstand the impact of the processed product. And cushioning material.

  The intermediate resin layer 42 is colored in a color that is easily recognized by the naked eye, for example, red, and the resin layers 41 and 42 on both sides are colored in a color other than red. Therefore, as shown in FIG. 3, when the innermost resin layer 43 is peeled off by abrasion, the intermediate resin layer 42 is partially exposed. In that case, since the resin layer 42 is red and colored in a color different from that of the resin layer 4, the wear state of the lining layer 4 can be seen at a glance. Therefore, if the resin layer 43 is again laminated and repaired at an appropriate timing while checking the exposed state of the resin layer 42, the barrel tank 1 can always be used in a good state. If the color of the resin layer 43 is also a color that can be easily recognized by the processed product (for example, white when the processed product is black), the processed product does not remain in the barrel tank 1 after polishing. Can be easily checked. Then, if the rubber hardness of the polyurethane resin layer is set according to the processed product, and the barrel tank used for the processed product is determined by the colored color of the resin layer 43, the barrel according to the processed product. The tank can be managed finely.

  The polyurethane resin layer is formed by mixing a known polyurethane resin liquid, a curing agent, and a colorant, and adhering the inner surface of the barrel tank 1 to a uniform layer thickness by spraying, coating, fluid immersion, or the like. . If the time required for curing after forming one resin layer (1-2 hours) is formed and the next resin layer is formed, the colors of each other will not be mixed.

  The total thickness of the lining layer may be formed in the range of 1 mm to 25 mm, but it may be greater than this. As for the thickness of each resin layer, in order to improve the cushioning property of the lining layer, it is better to make the outermost resin layer thicker. Further, the innermost resin layer may be formed thin as long as sufficient durability can be secured. The rubber hardness of the outermost polyurethane resin layer (main body side resin layer) of the lining layer is softly formed in the range of 30 to 60 degrees, and the rubber hardness of the innermost polyurethane resin layer (inner side resin layer) Is preferably formed hard within a range of 80 to 90 degrees. The rubber hardness of the intermediate resin layer is set to an intermediate value between the rubber hardnesses of the innermost and outermost resin layers. The rubber hardness of the resin layer can be appropriately adjusted depending on the amount of the curing agent mixed.

  The polyurethane resin can be colored in various colors by a colorant, and the color combination of each resin layer can be selected as appropriate. It is better to select a color that is easy to recognize, such as red, for the intermediate resin layer that is a measure of wear. For the innermost resin layer, it is preferable to select a color in consideration of a management aspect such as a color that can identify a processed product or a color that changes depending on an abrasive.

  FIG. 4 shows a schematic perspective view of another embodiment according to the present invention. 4 is the same as FIG. 1 except for the lining layer 5. In this example, the lining layer 5 is composed of two layers as shown in the enlarged sectional view of FIG. 5, a rubber layer 51 is formed on the main body 2, and a polyurethane resin layer 52 is laminated on the inner surface thereof. . The rubber layer 51 is formed in the same manner as a conventional rubber lining layer and has cushioning properties, and the polyurethane resin layer 52 is formed to be harder and harder than the rubber layer 51. The polyurethane resin layer 52 is colored in a color different from that of the rubber layer 51.

  Therefore, as in the above-described embodiment, the rubber layer 51 can provide a lining layer having cushioning properties while ensuring sufficient durability with the polyurethane resin layer 52. Since the polyurethane resin layer 52 is colored in a color different from that of the rubber layer 51, when the polyurethane resin layer 52 is peeled off due to wear or the like, it can be checked that the rubber layer 51 is exposed and worn at a glance. Therefore, when the rubber layer 51 is exposed, it can be easily repaired by forming a polyurethane resin layer on the inner surface, and since the rubber layer 51 is not worn, the repair work of replacing the rubber layer 51 itself. There is no need to do.

  A resin in which 20 parts by weight of a curing agent is mixed with 100 parts by weight of a polyurethane resin liquid and a colorant is appropriately added after surface treatment is performed so that the resin adheres well to the inner surface of an iron barrel tank body. The liquid was spray-painted with a spray gun. After spray coating was performed until the layer thickness reached about 3 mm, the coating was left to cure for about 1 hour to form a first layer. Next, 15 parts by weight of a curing agent is mixed with 100 parts by weight of the polyurethane resin liquid, and a resin liquid appropriately added with a colorant is spray-coated with a spray gun to form a second layer having a thickness of about 3 mm. A resin layer was laminated. Finally, 10 parts by weight of a curing agent is mixed with 100 parts by weight of the polyurethane resin liquid, and a resin liquid appropriately added with a colorant is spray-coated with a spray gun to form a third layer having a layer thickness of about 3 mm. A resin layer was laminated. Thus, a lining layer having a thickness of about 10 mm was formed on the entire inner surface of the main body.

  The inner surface of the formed lining layer has a high wear resistance up to about 10 times that of the conventional natural rubber lining layer, improving durability, and cushioning enough to reduce the impact on the processed product There was also.

It is a schematic perspective view regarding the embodiment which concerns on this invention. It is an expanded sectional view of the lining layer of FIG. It is explanatory drawing which shows the state from which the resin layer peeled. It is a schematic perspective view regarding another embodiment which concerns on this invention. It is an expanded sectional view of the lining layer of FIG.

Explanation of symbols

1 Barrel tank 2 Body 3 Lid 4 Lining layer 5 Lining layer

Claims (2)

  It has a barrel tank body and three or more polyurethane resin layers laminated on the entire inner surface of the barrel tank body, and the polyurethane resin layer has a rubber hardness that increases in order from the outer layer to the inner layer. A barrel tank of a barrel polishing machine, characterized in that at least one of the intermediate resin layers is colored in a different color from the adjacent layers.   A barrel tank body, a rubber layer laminated on the entire inner surface of the barrel tank body, and one or more polyurethane resin layers laminated on the entire inner surface of the rubber layer, the polyurethane resin layer comprising: A barrel tank of a barrel polishing machine, wherein the rubber layer has a rubber hardness higher than that of the rubber layer and is colored in a different color.

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