JPS5833096B2 - Molded product deburring device - Google Patents

Description

[Detailed description of the invention] The present invention relates to an apparatus for automatically removing banners from molded products.

Conventionally, it is known to remove burrs from the peripheral surface of a circular molded product by rotating the molded product and feeding it into flat sides that approach and separate from each other.

Alternatively, simply use a flat upper and lower blade as shown in Fig. 7.

For those that cut burrs with a cutting edge, in order to cut something other than circular, set the upper and lower blades to the 8th blade according to the shape of the molded product.
It is extremely difficult to make the upper and lower blades perform an action that requires movement as shown by the chain lines in the figure, and the device becomes complicated.

For this reason, there are no molded products that automatically create beams that are not circular, and these beams are mostly removed by hand with scissors.

This has the disadvantage that not only is the work efficiency extremely low, but the finished product is also inconsistent.

The object of the present invention is to obtain a device that can automatically remove burrs from the circumferential surface of molded products of all shapes. In a device for cutting off burrs on the peripheral surface of a synthetic rubber molded product, the fixed blade and the movable blade provided in the cutting device are formed into an arcuate cross section, and the support base that supports the molded product is connected to the drive shaft. It is characterized in that it is connected to and rotatably provided, and that at least one of the cutting device and the support stand is moved forward and backward relative to the other according to the distance from the rotation center of the molded product to the cutting point surface of the molded product. .

An example of implementing the present invention will be described with reference to the drawings.

In the drawing, 1 is a machine base, 2 is a cutting device installed on the machine base 1, and 3 is a cutting device installed on the machine base 1.
indicates a support base for molded product a, and the cutting device 2 has a lower blade 2a fixed to the machine base 1 and an upper blade 2c that moves up and down in conjunction with an eccentric wheel 2b.
The lower blade 2a shown in the figure is constructed by wrapping a band-shaped steel plate 2e around the circumferential surface of a guide 2d whose front end is formed into an arc shape, and the upper blade 2C is formed from a round steel bar, Place the stick on the lower blade 2a
It is provided so as to be in contact with the inner surface of the belt-shaped steel plate 2e that constitutes the steel plate 2e.

The support stand 3 is rotatably provided via a ball bearing 10 on a sliding stand 4 that slides along a guide groove 1a provided on the machine stand 1, and the support stand 3 is an electric motor provided on the lower surface of the machine stand 1. 5 through a flexible shaft 6 for rotational driving.The sliding table 4 is pulled toward the cutting device 2 by a spring 7, and a bone having the same shape as the outer shape of the molded product is placed on the support table 3. A shape 8 is provided, and the peripheral surface of the bone shape 8 is brought into contact with the front end surface of the bone shape 8, and the sliding table 4 is moved forward and backward relative to the cutting device 2 by the rotation of the bone shape 8 and the tensile force of the spring 7. did.

In the drawing, 9 is an electric motor for driving the eccentric wheel 2b.

Next, deburring using this device will be explained.

For example, when removing burrs from the circumferential surface of a rectangular molded product, a bone shape 8 having the same shape as the molded product is provided on the support base 3, a molded product a is placed on the support base 3, and a cutting device is 2 to cut and remove the beam. When doing so, as shown in Figure 6, the support stand 3 moves forward and backward relative to the cutting device 2 as the molded product a rotates from the state shown by the solid line. A tight resection is performed.

At this time, since the blades 2a and 2b are arcuate, the beam can be reliably removed without biting into the molded product.

As described above, according to the present invention, the support base that supports the molded product is rotationally driven, and S1 at least one of the support base and the cutting device is rotated relative to the other from the rotation center of the molded product to the peripheral surface of the cutting location of the molded product. In addition to moving forward and backward according to the distance,
Since the fixed blade and movable blade provided in the cutting device are formed with an arcuate cross section, it is possible to automatically remove curved beams of not only circular molded products but also molded products with other circumferential shapes. It has the effect of easily obtaining what can be removed.

In the illustrated example, the lower blade 2a is formed in a horseshoe shape using a copper band, but the lower blade 2a may be cylindrical or other as long as it has at least one arcuate portion.

[Brief explanation of drawings]

FIG. 1 is a cutaway side view showing an example of the implementation of the present invention, FIG. 2 is a diagram showing the ■--■ line, FIG. 3 is a diagram showing the ■-■ line, and FIG. 4 is the IV-- A cross-sectional side view taken along the IV line. Fig. 5 is an oblique view of the lower blade, Fig. 6 is a diagram illustrating the cutting state, Fig. 7 is a diagram showing a normal cutting device, and Fig. 8 is a diagram showing its operating state. be. 2...Cutting device, 2a...Lower blade, 2b
... Upper blade, 3 ... Support stand.

Claims (1)

[Claims] 1. In a device that cuts off burrs on the circumferential surface of rubber or synthetic rubber molded products using a cutting device consisting of a fixed blade and a movable blade that moves forward and backward relative to the fixed blade, the fixed blade and the movable blade provided on the cutting device are A support stand having an arcuate cross section and supporting the molded product is connected to a drive shaft and is rotatably provided, and at least one of the cutting device and the support stand is connected to the other from the center of rotation of the molded product. A molded product scraping device characterized by moving forward and backward according to the distance to the circumferential surface of the cutting point.