JPH0751289Y2 - Deburring device for rubber products - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a deburring device for a rubber product, which removes burrs from the rubber product by projecting abrasive grains onto a frozen rubber product.

[0002]

2. Description of the Related Art Conventionally, as a device of this type, a cage, which has a cylindrical shape or a polygonal cylindrical shape and has an opening at one end closed, is rotatably disposed in a freezing chamber with a support shaft in an upward state. , While freezing the rubber product stored in the cage and inverting it by rotating the cage,
In some cages, abrasive grains are projected toward the rubber product from the opening of the other end of the cage to remove the burrs of the low temperature brittle rubber product.

[0003]

However, in the conventional device having the above-mentioned structure, the rubber product in the cage spills out from the opening of the cage due to the injection of the refrigerant gas and the injection of the abrasive grains. The opening is pressed by a compression coil spring and is closed by a fixed lid with an abrasive grain projection opening, but this structure had a problem that the rubber product was caught in the gap between the cage and the lid. . In addition, the rubber product group is housed in the cage so that the vertical cross section forms an inverted triangle, and the surface of the rubber product group in the cage is greatly separated from the abrasive grain projection device and is projected. Since the abrasive grains spread in a fan shape, there are places where the rubber grains do not evenly hit the rubber product and only weakly hit even if it hits, so it takes much time to completely remove burrs. There was also a problem. The present invention has been made in order to solve the above problems.The abrasive grain projecting device can be brought close to a rubber product, and the abrasive grains can be applied to the rubber product almost uniformly. An object of the present invention is to provide a deburring device for rubber products that does not get caught in the gap between the lid and the lid.

[0004]

In order to achieve the above object, a deburring device for a rubber product of the present invention is a device for removing a burr of a rubber product by projecting abrasive grains onto a frozen rubber product. In the deburring device, a freezing room for freezing rubber products and a freezing room that can be put in and taken out and can be rotated in a vertical plane while lying in the freezing room, forming a cylindrical shape and closing one end. And a cover for opening and closing at the other end, and a rubber product storage cage having a large number of small holes through which abrasive grains to be projected can pass through at least the body wall portion, and the cage provided in the freezing chamber A support roller mechanism that rotatably supports the cage in a vertical plane, and an abrasive grain projection device that projects abrasive grains toward the body wall portion of the cage on the support roller mechanism are provided. .

[0005]

With this structure, the rubber product from which burrs should be removed is stored in the cage, the cage is placed on the support roller mechanism, and then the support roller mechanism is driven to rotate the cage. And, the rubber product is frozen to make the burr low temperature brittle. After that, when the abrasive grain projection device is driven to project the abrasive grains toward the body of the cage, the rubber product in the cage receives the abrasive grains uniformly and the burrs are crushed and removed in a short time.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
1 is a partial sectional front view, a support roller mechanism for rotatably supporting a cage 13, which will be described later, in a vertical plane at a middle position on the right side in the freezing compartment 1 having a heat insulating structure, as shown in FIG. The two rollers 2 and 2 are rotatably supported and arranged at a required interval in the left-right direction, and a driving device (not shown) is connected to the rollers 2 and 2. A chute 3 is provided below the rollers 2 and 2, and a vibrating screen 4 extending leftward is provided below the chute 3. The vibrating screen 4 has a first screen 5 made of wire mesh through which fine powdery burrs and the like can pass, and a second screen 5 made of wire mesh through which abrasive grains and burrs of the same size as the abrasive grains can pass.
The screen 6 is tightly attached.

A fine powder burr receiving box 7 is provided below the first screen 5 of the vibrating screen 4, a hopper 8 is formed below the second screen 6, and further below the left end of the vibrating screen 4. Is provided with a coarse burr receiving box 9. Further, a downward facing electric motor 10 is installed on the upper surface of the freezer compartment 1, and an impeller 11 as an abrasive grain projection device that horizontally rotates to centrifugally project abrasive grains is attached to the output shaft of the electric motor 10. An upper end of a suction pipe 12 whose lower end faces the hopper 8 is connected to a central portion of the impeller 11. In addition, in the upper part of the freezer compartment 1, the cage 13 on the rollers 2 and 2
A nozzle 14 for injecting a refrigerant gas toward the is provided.

As shown in FIG. 2 which is a longitudinal sectional view of the cage 13 and FIG. 3 which is a right side view of the cage 13, two cages 13 are formed in an annular shape and are horizontally provided at a required interval. Tires 15 and 15, four connecting rods 16 and 16 connecting these two tires 15 and 15 to each other, and tires 15 and 1
5, a cage main body 17 having a mesh shape that is formed in a cylindrical shape and through which abrasive grains projected from the impeller 11 can pass, and one tire 15 by closing an opening at one end of the cage main body 17 And a lid 18 having a mesh through which abrasive grains can pass, and an opening / closing lid 20 that is attached to the other tire 15 and is provided with stoppers 19 and 19 so that the other end opening of the cage body 17 can be opened and closed. Has been done.
Reference numeral 21 is a door that opens and closes a cage inlet / outlet 22 formed in the freezer compartment 1, and 23 is a blockage prevention pipe for the suction pipe 12 that is attached to the lower portion of the suction pipe 12.

With this construction, after the required amount of abrasive grains has been supplied into the hopper 8 and the rubber product to be deburred has been stored in the cage 13, the cage 13 is frozen from the cage inlet / outlet 22. It is put in the chamber 1, placed on the rollers 2 and 2, and the door 23 is closed. Then, when the refrigerant gas is injected from the nozzle 14 to cool the inside of the freezing chamber 1 and the inside of the freezing chamber 1 is cooled to a predetermined temperature and the burrs of the rubber product are brittle at low temperature, the electric motor 10 is driven to drive the impeller 11. Is rotated, the abrasive grains in the hopper 8 are sucked up by the suction tube 12, and then projected toward the body of the cage 13. Next, a driving device (not shown) is driven to rotate the cage 13 via the rollers 2 and 2, and the vibrating screen 4 is operated. This allows
The rubber product in the cage 13 is stirred and the impeller 1
The burr is crushed and removed by receiving the abrasive grains projected by 1 and passing through the body of the cage 13. Then, the burrs removed from the abrasive grains and the rubber products that have entered the cage 13 pass through the mesh of the cage body 17 and the lid 18 and then fall on the first screen 5 of the vibrating screen 4 to remove the fine particles, Then, it is moved to the left and dropped onto the second screen 6,
Abrasive grains and burrs of the same size as the abrasive grains are removed, and then further moved to the left to eject large burrs into the coarse burr receiving box 9.

When the above operation is performed for a required time, the cage 1
The rubber product in 3 receives the abrasive grains uniformly to remove burrs in a short time. After the removal of the burr is completed, the injection of the refrigerant gas from the nozzle 14 is stopped, and the driving of the electric motor 10, the rollers 2, 2 and the vibrating screen 4 are stopped,
The jetting of abrasive grains and the rotation of the cage 13 are stopped. Then, the door 21 is opened to take out the cage 13 on the rollers 2 and 2 from the inside of the freezing room 1, the opening / closing lid 20 of the cage 13 is opened, and the deburred rubber product is taken out from the cage 13 to complete the cycle. Although the abrasive grains are projected from the lateral direction of the cage 13 in the above embodiment, they may be projected from any direction as long as they are projected onto the body of the cage 13. The cage 13 may of course be made of a steel plate having a large number of small holes through which projected abrasive grains can pass.

[0011]

As is apparent from the above description, according to the present invention, a cage having a large number of small holes through which abrasive particles projected on the body can pass is provided so that it can be put into and out of the freezing chamber. It is possible to rotate it in a vertical plane in the state of lying inside the room, and since it has an abrasive grain projection device that projects abrasive grains toward the body of the cage in the freezing room, it is possible to use the abrasive grain projection device for rubber products as much as possible. It is possible to remove the burrs of the rubber product almost in a short time compared to the conventional device of this type because the abrasive particles can be applied almost uniformly to the rubber product in the cage. In addition, since the lid provided on the cage body rotates integrally with the cage body, the rubber product does not get caught in these gaps, which is an excellent practical effect.

[Brief description of drawings]

FIG. 1 is a sectional front view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a left side view of FIG.

[Explanation of symbols]

 1 Freezer 2 Roller 11 Impeller 13 Cage

Claims (1)

[Scope of utility model registration request] 1. A deburring apparatus for a rubber product, which removes burrs from a rubber product by projecting abrasive grains onto a frozen rubber product, and a freezing room 1 for freezing the rubber product And is rotatably laid in the freezer compartment 1 in a vertical plane and has a cylindrical shape and has one end closed and the other end provided with an openable / closable lid. A cage 13 for storing rubber products, which has a large number of small holes through which abrasive particles to be projected can pass, and the freezer compartment 1.
Support roller mechanisms 2 and 2 provided therein for rotatably supporting the cage 13 in a vertical plane, and grinding for projecting abrasive grains toward the body wall portion of the cage 13 on the support roller mechanisms 2 and 2. A deburring device for rubber products, comprising: a grain projecting device 11.