JPH1177706A - Burr-removing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily remove burr from a molded member by providing a burr- removing member pressed to the burr of the molded member to apply heat for melting the burr and shearing force to the burr. SOLUTION: A burr-removing apparatus 5 is equipped with a scraper 6 becoming a burr removing member, a heater 7 for heating the whole of the scraper or the like. Power is supplied to the heater 7 to generate heat and the whole of the scraper 6 is heated to the melting temp. of rubber. Next, the scraper 6 is moved toward a rubber roller 1 to put a roller 3 in the recessed part 10 of the scraper 6 to fit the same in the recessed part 10. Subsequently, the rubber roller 1 is rotated around a metal shaft 4 in the direction shown by an arrow B. Whereupon, the scraper 6 comes into contact with burr 4 to press the burr 4 but, at this time, the burr 4 is melted by heat and the shearing force due to the movement of the scraper 6 is applied to the burr 4 to remove the burr 4 from the roller 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burr removing device for removing a burr from a rubber roller molded product or the like.

[0002]

2. Description of the Related Art Conventionally, rubber rollers are used in many products to transport a medium. This rubber roller is constructed by attaching one or more rollers made of rubber or the like to a metal shaft.
Hereinafter, a method for producing the rubber roller by molding will be described.

In order to manufacture rubber rollers by molding,
A mold is used. Each of these molds has a rubber
The shape of the la is composed of an upper die and a lower die, each of which is engraved by half, and a part where the lower roller shape is dug and a part where the upper roller shape is dug Are combined to form a single roller.

A gate hole is formed in the upper die from the portion where the roller shape is engraved to the outside, so that when the upper die and the lower die are combined, the roller shape is formed. The inside to be formed and the outside are connected. On the other hand, the lower mold is provided with a groove for placing a metal shaft.

[0005] In the rubber roller molding step, first, a metal shaft is placed in the groove of the lower die, and the upper die and the lower die are fitted together. At this time, the metal shaft is located at the center between the portion where the upper roller shape is engraved and the portion where the lower roller shape is engraved.

[0006] Then, rubber is injected from an upper gate hole by an external injection mechanism and filled. After the rubber is cured, the upper mold is lifted to separate the upper mold from the lower mold, and the molded rubber roller is taken out. Thereby, a rubber roller is formed.

[0007] On the rubber roller after molding, thin burrs are generated at locations corresponding to the separation surface between the upper mold and the lower mold.
If the burrs pose a problem in terms of the function or appearance of the rubber roller, the burrs are cut off using tools such as nippers and removed to obtain finished products.

[0008]

In the above-described conventional burrs removal by a nipper or the like, since burrs are manually removed, a large number of work steps are required when the number of rollers is large. There was a point. In addition, there is a case where there is a variation in removing burrs between individuals, and this variation causes a variation in a product, so that there is a problem that it is difficult to ensure quality.

[0009]

Means for Solving the Problems In order to solve the above-mentioned problem, a solution provided in the present invention is to press against a burr of a molding member, and apply heat and shear force at a temperature at which the burr melts to the burr. And a burr removing member to be provided.

According to the above configuration, since heat is applied to the burr from the burr removing member and the burr is melted and a shearing force is applied thereto, the burr can be easily removed from the member.

[0011]

Embodiments of the present invention will be described with reference to the drawings. Elements common to the drawings are denoted by the same reference numerals. First Embodiment FIG. 1 is Gomuro the first embodiment - a perspective view of La and burr removal apparatus, FIG. 2 of the first embodiment Gomuro - La and Sucre - a plan view showing the path is there.

In FIG. 1, a rubber roller 1 includes a metal shaft 2 and a roller 3 formed of rubber. The molding process of the rubber roller 1 is the same as that in the description of the above-described conventional technique, and thus the description thereof will be omitted. However, the roller 3 of the rubber roller 1 after molding has upper and lower molds (not shown). Thin burrs 4 are generated at portions (side surfaces) corresponding to the separation surface from the mold.

Next, a burr removing device 5 for removing the burr 4 from the roller 3 will be described. The burr removing device 5 is a scraper 6 serving as a burr removing member, a heater 7 attached to the scraper 6 with a screw 9, and heating the entire scraper 6, and supplying power to the heater 7. And a power supply 8 that operates.

The scraper 6 is made of metal. As shown in FIG. 2, when the rubber roller 1 and the scraper 6 are fitted together, the roller 3 A concave portion 10 serving as a receiving portion having substantially the same shape as the side cross section is formed. Then, the heater 7 generates heat by the electric power from the power source 8, thereby heating the scraper 6 to the melting temperature of the rubber.

A handle (not shown) is provided on the scraper 6 so as to be detachable.
A projection (not shown) is formed on the lower surface 6a of the scraper 6. The projecting portion can be movably fitted into a guide path formed in a slide mechanism (not shown). When the scraper 6 moves along the above guide path, the scraper 6 is guided to the roller 3 of the rubber roller 1 installed in a mechanism (not shown) so that the metal shaft 4 is rotatable. I have.

Next, an operation for removing burrs in the above configuration will be described.

In FIG. 1, power is supplied from a power source 8 to a heater 7 to generate heat, thereby heating the entire scraper 6 to a melting temperature of rubber. Next, the operator grips the handle (not shown) and moves the scraper 6 along the guide path of the slide mechanism (not shown) toward the rubber roller 1 installed in the mechanism (not shown). Then, as shown in FIG. 2, the roller 3 is inserted into the concave portion 10 of the scraper 6, and
The rubber 3 and the concave portion 10 are fitted. At this time, burr 4
Is below the lower surface 6a of the scraper 6 (arrow A shown in FIG. 1).
Direction).

Next, the operator moves a mechanism (not shown) to rotate the rubber roller 1 about the metal shaft 4 in the direction of arrow B (the direction perpendicular to the direction in which the burrs 4 are generated).
Then, the scraper 6 comes into contact with the burr 4 and presses the burr 4. At this time, the burr 4 is melted by heat and a shearing force due to the movement of the scraper 6 is applied to the burr 4.
Is removed from the roller 3.

When the burr 4 on one side is removed, the rubber roller 1 is further rotated about the metal shaft 4 in the direction of arrow B, and the rubber roller 1 is again rolled into the concave portion 10 of the heated scraper 6. The roller 3 is inserted on the side opposite to the previous one, and the roller 3 and the concave portion 10 are fitted. Then, the operator rotates the rubber roller 1 in the direction of arrow B, thereby making the burr 4 in the same manner as described above.
Is removed from the roller 3.

The body of the roller 3 is thicker than the burr 4 and has a large heat capacity, so that the roller 3 is not melted or deformed by the heat of the scraper 6.

In the first embodiment, if the heated scraper 6 is pressed against the burr 4, the burr 4 can be removed from the roller 3 by heat and shearing force. 4 can be easily removed.
Further, even if the number of the rollers 3 is large, the burrs 4 generated on the plurality of rollers 3 can be removed by one operation, so that the number of operation steps can be reduced. Furthermore, since the burr 4 is only traced by the scraper 6, no variation occurs when removing the burr between the individual workers, so that the quality of the product can be ensured.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to the drawings. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. FIG. 3 is a plan view showing a rubber roller and a burr removing device according to a second embodiment.

In FIG. 3, the rubber roller 1 is the same as that of the first embodiment, and the description is omitted. In the second embodiment, the burr removing device 11 includes a blast liquid injection nozzle 12 and a pump device 15 to which the blast liquid injection nozzle 12 is attached.

The pump device 15 stores water (hereinafter, referred to as a blast liquid) 13 containing an abrasive (eg, a crushed resin material of about 0.5 mm to 1.0 mm). High-speed injection is performed toward the burr 4 from the injection surface 14 of the blast liquid injection nozzle 12 having an inner diameter of about 10 mm.

The control of the injection speed of the blast liquid 13 is as follows.
It is performed by controlling the pump water supply pressure, mixing compressed air into the water supply simultaneously while controlling the compression and flow rate, or performing the above two control methods simultaneously.

The blast liquid injection nozzle 12 is positioned so that the injection surface 14 of the blast liquid injection nozzle 12 is separated from the burr 4 of the roller 3 by about 30 mm. Note that the injection length of the blast liquid 13 injected from the injection surface 14 of the blast liquid injection nozzle 12 can be appropriately adjusted by the injection speed or pressure.

Although the blast liquid 13 is made by mixing water and a resin, it is also possible to substitute abrasive by mixing compressed air without using water.

Next, an operation for removing burrs in the above configuration will be described. FIGS. 4, 5 and 6 are plan views showing a rubber roller and a burr removing device according to the second embodiment.

In FIG. 3, the blast liquid 13 is injected at a high speed from the injection surface 14 of the blast liquid injection nozzle 12 by operating the pump device 15. Rubber roller 1 with it
Is moved in the direction of arrow B so that the blast liquid 13 hits the burrs 4 of the respective rollers 3. When the blast liquid 13 injected at a high speed collides with the burr 4 of the roller 3, the burr 4 is peeled off from the roller 3 and removed as shown in FIG.

Since the metal shaft 2 serving as the axis of the rubber roller 1 is inverted by a mechanism (not shown), when the burr 4 on one side is removed, the rubber roller 1 is moved around the metal shaft 2 as an axis. It is turned over to the state shown in FIG. Then, the blast liquid injection nozzle 12 again sends the blast liquid 13
At high speed toward the roller 3 and the rubber roller 1
Is moved in the direction of arrow B to remove the remaining burrs 4.

As shown in FIG. 6, the blast liquid injection nozzles 12 may be provided in pairs. This way,
Since the blast liquid 13 from each blast liquid injection nozzle 12 hits the burrs 4 generated on both sides of the roller 3, it is possible to remove all the burrs 4 generated on the roller 3 by one operation. , Less man-hours.

Instead of moving the rubber roller 1, the blast liquid injection nozzle 12 may be moved. Further, instead of inverting the rubber roller 1, the blast liquid injection nozzle 12 may be inverted.

In the second embodiment, since the blast liquid 13 is sprayed toward the burrs 4 of the roller 3, the burrs 4 can be removed by the polishing force of the blast liquid 13. 4 can be easily removed. Further, even if the number of the rollers 3 is large or the burr 4 has a complicated shape, the burr 4 can be removed from the roller 3 in a short time. As a result, the number of steps for removing the burr 4 can be reduced. Further, the blast liquid 13
Since it is not necessary to strictly determine the direction of the jetting, the processing does not vary among the workers, and the quality of the product can be ensured.

[0034]

Since the present invention is configured as described above, the following effects can be obtained.

The burr can be easily removed from the molding member by providing the burr removing member which is pressed against the burr of the molding member and gives the burr a heat and a shearing force at a temperature at which the burr melts. . Further, since the burr can be removed only by pressing the burr removing member against the burr, it is possible to remove the burr of a plurality of molding members by one operation, and as a result, the number of operation steps can be reduced. Further, since there is no variation in removing burrs between individual workers, the quality of the product can be ensured.

In addition, since the liquid containing the abrasive or the compressed air containing the abrasive is injected against the burrs of the molded member, the burrs can be removed by the abrasive force of the liquid or compressed air. This also makes it easier to remove burrs. Furthermore,
Even if the number of molding members is large and burrs have complicated shapes, burrs can be removed from the molding members in a short time. As a result, the number of steps for removing burrs can be reduced. In addition, since it is not necessary to strictly determine the direction of injection of the liquid containing the abrasive or the compressed air containing the abrasive, there is no variation in processing among individual workers, and therefore, the quality of the product is reduced. Can be secured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a rubber roller and a burr removing device according to a first embodiment.

FIG. 2 is a plan view showing a rubber roller and a scraper according to the first embodiment.

FIG. 3 is a plan view showing a rubber roller and a burr removing device according to a second embodiment.

FIG. 4 is a plan view showing a rubber roller and a burr removing device according to a second embodiment.

FIG. 5 is a plan view showing a rubber roller and a burr removing device according to a second embodiment.

FIG. 6 is a plan view showing a rubber roller and a burr removing device according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rubber roller 3 Roller 4 Burr 5 Burr removing device 6 Scraper 7 Heater 8 Power supply 10 Concave part 11 Burr removing device 12 Blast liquid injection nozzle 13 Blast liquid 14 Injection surface 15 Pump device

Claims (4)

[Claims] 1. A deburring device comprising: a deburring member which is pressed against a burr of a molding member and applies heat and a shearing force at a temperature at which the burr melts to the burr. 2. A receiving portion having substantially the same shape as a side cross section of the forming member is formed on the burr removing member, and the forming member having a burr generated on a side surface is fitted to the receiving portion to form the receiving member. Alternatively, the burr removing member is pressed against the burr by moving the forming member, and heat and shearing force at a temperature at which the burr is melted are applied to the burr. 3. A burr removing apparatus, wherein a liquid containing an abrasive is sprayed onto burrs of a molding member. 4. A burr removing device, wherein compressed air containing an abrasive is injected to burrs of a molded member.