JPH0553912U - Deburring device for rubber products - Google Patents

Abstract

(57) [Abstract] [Purpose] In a deburring device for a rubber product, the abrasive grain projecting device can be brought close to the rubber product, and the abrasive grains can be applied to the rubber product almost uniformly. Avoid getting caught in the gap between the cage and the lid. [Structure] In a deburring device for a rubber product, which removes burrs from a rubber product by projecting abrasive grains onto a frozen rubber product,
A freezing room 1 for freezing a rubber product, and a freezing room 1 which can be put into and taken out of the freezing room 1 and can be rotated in a vertical plane while lying in the freezing room 1, forming a cylindrical shape and closing one end thereof. In addition, a lid 13 which can be opened and closed is provided at the other end, and a cage 13 for accommodating a rubber product, which has a large number of small holes through which abrasive grains to be projected can pass through at least the body wall portion, 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 a body wall portion of the cage 13 on the support roller mechanisms 2 and 2. And a grain projection device 11.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an improvement in a deburring device for a rubber product, which removes burrs from a rubber product by projecting abrasive grains onto a frozen rubber product.

[0002]

[Prior art]

 Conventionally, as a device of this type, a cage having a cylindrical shape or a polygonal cylinder shape and having an opening closed at one end is rotatably arranged in a freezing chamber with a supporting shaft in an upward state. While freezing the rubber product stored in the cage and inverting it by rotating the cage, the abrasive grains are projected from the opening at the other end of the cage toward the rubber product to remove the burrs of the rubber product that has become brittle at low temperature. Some are configured to do.

[0003]

[Problems to be solved by the present invention]

 However, in the conventional device configured as described above, 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, so that the opening is pressed by the compression coil spring. A fixed lid with an abrasive grain projection port is used to close it, but this structure has the problem that the rubber product gets caught in the gap between the cage and the lid. In addition, the rubber product group is housed in the cage so that the longitudinal 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, Since the abrasive grains spread in the shape of a fan, the rubber product does not hit the abrasive grains evenly, and there are some places where the abrasive particles only hit weakly. Therefore, it takes a long 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 rubber product can be almost uniformly applied with the abrasive grains. It is an object of the present invention to provide a deburring device for rubber products that does not get caught in the gap between the cage and the lid.

[0004]

Means for Solving the Problems In order to achieve the above object, a deburring device for a rubber product of the present invention is a device for deburring a rubber product by projecting abrasive grains onto a frozen rubber product. In the deburring device, a freezer compartment for freezing a rubber product and a freezer compartment that can be put in and taken out, and can be rotated in a vertical plane while lying in the freezer compartment to form a cylindrical shape. A cage for accommodating rubber products, in which one end is closed and a cover that can be opened and closed is provided at the other end and a large number of small holes through which projected abrasive grains can pass are provided at least in the body wall, and A support roller mechanism provided in the freezing chamber to rotatably support the cage in a vertical plane, and an abrasive projection device for projecting abrasive particles toward the body wall of the cage on the support roller mechanism. It is characterized by having.

[0005]

[Action]

 With this type of structure, after the rubber product whose burr is to 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. Then, 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]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 to 3, and as shown in FIG. 1 which is a partial sectional front view, a right middle position in a freezing compartment 1 having a heat insulating structure will be described later. Two rollers 2, 2 serving as a support roller mechanism for rotatably supporting the cage 13 in a vertical plane are rotatably supported and arranged at required intervals in the left-right direction. A drive device (not shown) is connected to the drive unit 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. On the vibrating screen 4, there are a first screen 5 made of wire netting through which fine powdery burrs and the like can pass, and a second screen 6 made of wire netting through which abrasive grains and burrs of the same size as the abrasive grains can pass. I'm tight.

A fine powder burr receiving box 7 is provided below the first screen 5 of the vibrating screen 4, and a hopper 8 is formed below the second screen 6, and further below the left end of the vibrating screen 4. On the other hand, a coarse burr receiving box 9 is arranged. Further, a downward facing electric motor 10 is installed on the upper surface of the freezing room 1, and an output shaft of the electric motor 10 is equipped with an impeller 11 as an abrasive grain projection device for horizontally rotating and projecting abrasive grains into a centric manner. There is. The upper end of the suction pipe 12 whose lower end faces the inside of the hopper 8 is connected to the central portion of the impeller 11. A nozzle 14 for injecting a refrigerant gas toward the cage 13 on the rollers 2 and 2 is provided in the upper portion of the freezer compartment 1.

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. The tires 15 and 15, four connecting rods 16 and 16 that connect the two tires 15 and 15 to each other, and the tires 15 and 15 are installed between the insides of the tires 15 and 15 to form a cylindrical shape and project from the impeller 11. A cage main body 17 having a mesh through which the abrasive grains can pass, and a lid 18 attached to one tire 15 so as to close an opening at one end of the cage main body 17 and having a mesh through which the abrasive grains can pass. The cage main body 17 has an opening / closing lid 20 that is attached to the other tire 15 so that the other end opening can be opened and closed and that is provided with stoppers 19 and 19. Reference numeral 21 is a door that opens and closes a cage inlet / outlet 22 formed in the freezer compartment 1, and reference numeral 23 is a blockage prevention pipe for the suction pipe 12 attached to the lower portion of the suction pipe 12.

With such a structure, the required amount of abrasive grains is supplied in advance into the hopper 8 and the rubber product to be burr is stored in the cage 13, and then the cage 13 is moved from the cage inlet / outlet 22. It is put in the freezer compartment 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 compartment 1 and the inside of the freezing compartment 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 to suck up the abrasive grains in the hopper 8 with the suction pipe 12, and then the abrasive grains are projected toward the body of the cage 13. Then, a drive device (not shown) is driven to rotate the cage 13 via the rollers 2 and 2, and the vibrating screen 4 is operated. As a result, the rubber product in the cage 13 is agitated and is projected by the impeller 11 to receive the abrasive grains that have passed through the body of the cage 13, and the burrs are crushed and removed. 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 sieve 4 to remove fines. Then, it is moved to the left and drops on the second screen 6, removing the abrasive grains and burrs of the same size as the abrasive grains, and then further moving to the left to remove coarse burrs. It is discharged into the receiving box 9.

When the above operation is performed for a required time, the rubber product in the cage 13 receives the abrasive grains uniformly and removes 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 sieve 4 are stopped, respectively, to inject the abrasive grains and rotate the cage 13. To stop. Next, 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, and the opening / closing lid 20 of the cage 13 is opened to take out the deburred rubber product from the cage 13 to cycle the cycle. finish. 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]

[Effect of the device]

 As is clear from the above description, according to the present invention, a cage having a large number of small holes through which the abrasive particles projected on the body can pass is provided so as to be able to move in and out of the freezing chamber and laid horizontally in the freezing chamber. In this state, it is possible to rotate in a vertical plane, and since an abrasive grain projection device that projects abrasive grains toward the body of the cage in the freezing room is provided, it is possible to bring the whetstone grain projection device as close to the rubber product as possible. In addition, since the abrasive particles can be applied to the rubber product in the cage almost uniformly, it is possible to almost completely remove the burrs of the rubber product in a shorter time than the conventional device of this type. Moreover, 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 the 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 device for a rubber product, which removes burrs from a rubber product by projecting abrasive grains onto a frozen rubber product, and a freezing chamber 1 for freezing the rubber product, and which can be put into and out of the freezing chamber 1. And is rotatably laid in the freezer compartment 1 in a vertical plane and has a cylindrical shape with 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 a 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.