JPH0671658A - Deburring device - Google Patents

Abstract

PURPOSE:To provide a deburring device which removes a burrs from a molded product to finish the product. CONSTITUTION:A deburring device comprises a work mounting base 1, a microframe torch 2, and a three dimensional driver 3. By the operation of the driver 3, the microframe torch 2 moves along a molded product and hot gas is ejected to the part of a burr close to the product. The part of the burr melts so that the burr is removed from the product. At the same time, the molten part of the burr left to the product is adsorbed to the product by the surface tension so that the residual part of the burr is smoothened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring device for molded articles. More specifically, the present invention relates to a deburring device capable of performing deburring finishing at the same time as separating a burr from a molded product. The deburring apparatus of the present invention can be applied to deburring work of resin blow molded products, deburring work of resin injection molded products, deburring work of die cast molded products, and the like. The deburring device of the present invention is particularly suitable for deburring work of resin blow molded products.

[0002]

2. Description of the Related Art Conventionally, the deburring work of a molded product (hereinafter referred to as a work W) having a burr P on the peripheral portion as shown in FIG. 3 has been carried out as follows. First, a punching machine or the like is used to divide into a work W and a burr F in which a burr P having a predetermined minute width remains on the peripheral edge. After that, using a burner, a warm air heater, or the like, the burrs P having a minute width remaining on the peripheral portion of the work W are melted and smoothed, and deburring is finished. In this way, the deburring work of the work W having the burrs P on the peripheral portion is completed.

[0003]

As described above, the conventional deburring work for the work W having the burrs F on the peripheral portion is the step of dividing the work W into the burrs F and the peripheral portion of the work W. This is a very time-consuming work, which consists of melting and smoothing the remaining small-width burr P, smoothing it, and finishing deburring, which has been a factor in increasing the manufacturing cost of the finished product.

The present invention has been made in view of such a problem of the conventional deburring work. Therefore, an object of the present invention is to provide a deburring device that can perform deburring finishing at the same time as separating a molded product from a burr.

[0005]

DISCLOSURE OF THE INVENTION A deburring device of the present invention comprises a holding means for holding a molded product having a burr on its peripheral edge,
A high-temperature gas ejecting means for ejecting a high-temperature gas that melts the material forming the burr and the high-temperature gas ejecting means for ejecting the high-temperature gas along a molded product and at a burr portion close to the molded product. And a three-dimensional driving means for driving, to melt the burr portion in the vicinity of the molded product to separate the molded product from the burr, and to melt the burr remaining in the molded product to form a surface thereof. It is characterized in that it is adsorbed to the molded product by tension to smooth the burr portion.

[0006]

The operation of the deburring apparatus of the present invention will be described below. First, the holding means holds a molded product having a burr on the peripheral edge, which is taken out from the molding machine. Then, the high temperature gas ejection means is activated to eject a high temperature gas that melts the material forming the burr. Further, the three-dimensional driving means is activated to drive the high temperature gas ejection means so as to eject the high temperature gas along the molded product and to the burr portion close to the molded product.

Then, the burr portion near the molded product is melted, and the molded product and the burr are separated. At the same time, the burrs remaining on the molded product are also melted, and the melted burrs are adsorbed to the molded product due to the surface tension, and the burrs are smoothed. That is, by using the deburring apparatus of the present invention, it is possible to separate the molded product from the burr and simultaneously carry out deburring finishing.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the deburring device according to the present invention (hereinafter referred to as the deburring device of the embodiment) will be described below with reference to FIGS. 1 and 2 are a plan view and a front view of a deburring device of an embodiment, respectively. As shown in FIGS. 1 and 2, the deburring device of the embodiment is
It is composed of a work mounting table 1, a microframe torch 2, and a three-dimensional drive device 3. The work mounting table 1, the microframe torch 2, and the three-dimensional drive device 3 are housed in a housing 4 composed of rectangular pipes 41, 42, 43, 44 assembled in a rectangular parallelepiped shape. The outside of the housing 4 is covered with the covers 5, 6, and 7 so that the microframe ejected by the microframe torch 2 described below is not affected by wind from the outside. Note that the cover 5 on the front of the deburring apparatus of the embodiment is openable / closable in order to insert and remove the work W having the burrs F around it as shown in FIG. Further, both ends of the lower part of the deburring device of the embodiment, that is, the housing 4
Two pairs of casters 8, 8 are attached to both ends of the square pipe 43 disposed in the lower part of the above in order to make the deburring device of the embodiment movable.

The work table 1 is arranged in the left-right direction in FIG. 1 (that is, the X-axis 31 of the three-dimensional drive device 3 described below).
Direction) and is disposed on a pair of beams 45, 45 fixed to the square pipes 42, 42. Further, as shown in FIG. 4, the work mounting table 1 holds the work W and the burr F so that the relative positional relationship between the work W and the burr F does not change even after the work W and the burr F are separated. Holding jig 1
It has 1, 12, and 13.

The micro frame torch 2 is arranged in the vertical direction in FIG. 2 (Z-axis 33 of the three-dimensional driving device 3 described below).
Direction), and the tip portion thereof is directed to the lower portion of the deburring device of the embodiment. FIG. 6 is an enlarged front view of the microframe torch 2. As shown in FIG. 6, the tip of the microframe torch 2 (shown in the lower end) is
The tip 21, the gas filter 22, and the flashback prevention filter 23 are integrally attached in this order. An L-shaped cock 24 for opening and closing is attached to the outer peripheral portion of the flashback prevention filter 23. Further, a pair of disc-shaped attachments for disposing the microframe torch 2 in the Z-axis 33 direction of the three-dimensional driving device 3 described below are attached to the end portion (the upper end portion in the drawing) of the microframe torch 2. Jig 25
Are attached integrally. The end of the microframe torch 2 communicates with a microframe generation source (not shown).

In the deburring apparatus of the embodiment, the microframe torch 2 has a temperature of about 1200 ° C. and a length of about 10 to 15 mm produced by burning hydrogen and oxygen obtained by decomposing water. The work W
Is sprayed from above onto the portion P of the burr F to melt the portion W to separate the work W and the burr F, and the burr P remaining on the work W is melted and the surface tension of the burr P is applied to the work W. The part of the burr P is smoothed by adsorption. In order to more effectively perform the deburring and finishing work at the same time as the work of dividing the work W and the burr F, the inner diameter φ of the tip 21 of the microframe torch 2 is set to 0.2 to 2.0 mm. And, the micro flame torch 2 is 5 to 40 at a temperature of 1200 to 2500 ° C.
It is preferable to eject the micro frame with a length of mm.

The three-dimensional drive device 3 extends horizontally in the left-right direction in FIG. 1 (that is, in the direction of its own X-axis 31) and is disposed on a pair of beams 45, 45 fixed to the square pipes 42, 42. ing. The three-dimensional drive device 3 includes an X axis 31, a Y axis 32, and a Z axis 33 that are orthogonal to each other. The X-axis 31 extends in the left-right direction in FIGS. 1 and 2, the Y-axis 32 extends in the vertical direction in FIG. 1, the direction perpendicular to the paper surface in FIG. 2, and the Z-axis 33 extends in the paper surface in FIG. 2 is arranged so as to extend in the vertical direction in FIG. In the deburring device of the embodiment, the three-dimensional driving device 3 drives the microframe torch 2 in the X-axis 31 direction and the Y-axis 32 direction by the servo motor, and the microframe torch 2 by the pulse motor.
Are driven in the Z-axis 33 direction. The three-dimensional drive 3
Is connected to a control device (not shown), and by operating the three-dimensional drive device 3 via the control device, the microframe torch 2 is moved in the X-axis 31 direction, the Y-axis 32 direction,
It is driven in the Z-axis 33 direction and a direction in which these are arbitrarily combined.

The operation of the deburring apparatus of the embodiment constructed as described above will be described below. Workpiece W to be deburred and deburred by the deburring apparatus of the embodiment
Was an automobile duct as shown in FIG. This work W is a blow-molded polypropylene (hereinafter, referred to as PP) molded product having a hollow inside, and has a burr F at its peripheral portion. The combined size of the work W and the burr F is approximately 170 mm in length, 400 mm in width, and 14 in height.
The length of the entire circumference of the work W was about 1200 mm per one work.

First, as shown in FIG. 4, the work W having a burr F on the peripheral portion taken out from the blow molding machine is held on the work placing table 1 via holding jigs 11, 12, and 13. At this time, the work F and the burr F are held on the work mounting table 1 by the holding jigs 11, 12, and 13 so that their relative positional relationship does not change even after they are divided. Has been done. The work placing table 1 on which the work W and the burr F are placed in this manner is arranged at a predetermined position of the deburring apparatus of the embodiment.

Then, the start switch 9 disposed on the right side of the deburring device of the embodiment is pushed to start the microframe generation source and the three-dimensional drive device 3 (not shown), and the temperature from the microframe torch 2 is reduced. 1200 ° C
In addition to ejecting a micro frame having a length of about 10 to 15 mm to the portion P of the burr F near the work W,
The microframe torch 2 was driven along the peripheral edge of the work W by operating a control device (not shown). In addition, in the deburring apparatus of the embodiment, from the peripheral portion of the work W
The microframe was ejected from the microframe torch 2 over a width of 1.5 mm, that is, the width of the burr P remaining on the work W was 1 to 1.5 mm.

By operating the deburring apparatus of the embodiment as described above, the PP constituting the portion P of the burr F close to the work W is melted and the work W and the burr F are separated. At the same time, the PP forming the burr P remaining on the peripheral portion of the work W is melted. Then, the melted PP is attracted to the peripheral portion of the work W due to its surface tension, and as a result, the portion which was the burr P remaining on the peripheral portion of the work W is smoothed. That is, by using the deburring apparatus of the embodiment, the work of dividing the work W and the burr F and the work of deburring the work W can be simultaneously performed. Therefore, according to the deburring apparatus of the embodiment,
The time required for the deburring work of the work W having the burrs F on the peripheral portion can be significantly reduced.

In the deburring apparatus of the embodiment,
The holding jigs 11, 12, and 13 are block-shaped members made of a metal material, but the present invention is not limited to this. If the work W and the burr F can be held so that their relative positional relationship does not change even after the work W and the burr F are separated, the holding jigs 11, 12,
13 may be, for example, a block-shaped member made of a resin material or a pin-shaped member made of a metal or a resin material.

Further, instead of the micro flame torch 2 used in the deburring apparatus of the embodiment, a warm air heater 2a as shown in FIG. 7 can be used. Figure 7
[Fig. 4] is an enlarged front view of a warm air heater 2a used in place of the micro flame torch 2. As shown in FIG. 7, the warm air heater 2a includes a truncated cone-shaped tip portion 21a,
A cylindrical intermediate portion 22a integrally formed at the upper end of the tip portion 21a, a cylindrical mounting portion 23a integrally formed at the upper end of the intermediate portion 22a, and an outer peripheral portion at the upper end of the intermediate portion 22a. And a heater portion 24a provided.
Here, a male screw is formed on the outer peripheral surface of the mounting portion 23a in order to dispose the warm air heater 2a in the Z-axis 33 direction of the three-dimensional drive device 3, and the upper end of the mounting portion 23a is shown in the figure. Not in communication with air source. Further, the heater part 24a is connected to a power source (not shown) by the lead wires 24b, 24b, and when a predetermined voltage is applied, the nichrome wire contained in the heater part 24a generates Joule heat, and the warm air heater The air flowing in 2a is heated.

Here, the hot air blown by the warm air heater 2a effectively separates the work W from the burrs F, melts the burrs P remaining on the work W, and causes the surface tension of the burred P to melt. In order to cause the material forming the burr P to be adsorbed on the work W and smooth the part of the burr P by 750 to 750 with the heater 24a of the warm air heater 2a.
It is heated to 850 ° C., and the inner diameter φ of its tip 21a is set to 1.5.
To 2.4 mm, and 2 to 5 from the tip 21a.
It is preferable to eject air in a length of mm.

Further, using the deburring apparatus of the embodiment,
In order to further improve the efficiency of the deburring work of the work W having the burrs F on the peripheral edge, the burrs F are provided on the peripheral edge taken out from the blow molding machine by adjusting the mold for blow molding in advance. It is more preferable that the sectional shape of the work W is adjusted so that the thickness of the burr P remaining on the work W is thinner than the thickness of the work W and the burr F as shown in FIG.
If the work W having the burrs F on the peripheral portion having such a cross-sectional shape is deburred by using the deburring apparatus of the embodiment, the burrs P remaining on the work W are more easily melted. The work of separating W from the burr F is easier and completed in a short time. Further, since the amount of the molten material forming the burr P generated when the burr P remaining on the work W is melted is small, the molten material forming the burr P is transferred to the work W in a shorter time. It is adsorbed and distributed more smoothly on the outer peripheral surface of the work W. As a result, not only is the work of deburring the work W having the burrs F on the peripheral edge more efficient, but the appearance quality of the work W after deburring is further improved.

[0021]

As described above in detail, in the deburring apparatus of the present invention, the high temperature gas jetting means melts the material forming the burr at a high temperature on the molded article having the burrs on the peripheral edge held by the holding means. Ejects the gas. Further, the three-dimensional driving means drives the high temperature gas jetting means so as to jet the high temperature gas along the molded product and to the burr portion close to the molded product.

Therefore, the deburring apparatus of the present invention melts the burr portion adjacent to the molded product to separate the molded product and the burr. At the same time, the deburring device of the present invention is
Burrs remaining in the molded product also melt. Then, the melted burr is adsorbed to the molded article by its surface tension, and the burr portion is smoothed. Thus, by using the deburring device of the present invention, it is possible to separate the molded product from the burr and simultaneously carry out deburring finishing.

As a result, the deburring apparatus of the present invention simplifies the deburring work of a molded product having burrs on the peripheral portion and shortens the time required for the deburring work. That is, if the deburring apparatus of the present invention is used, the manufacturing cost of the molded product can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of a deburring device of the present invention.

FIG. 2 is a front view of an embodiment of the deburring device of the present invention.

FIG. 3 is a plan view of a molded product having burrs on a peripheral edge portion on which deburring work is performed according to an embodiment of the deburring apparatus of the present invention.

FIG. 4 is a side view showing a state in which the molded product having a burr on the peripheral portion shown in FIG. 3 is held by a mounting means according to an embodiment of the deburring device of the present invention.

FIG. 5 is a schematic cross-sectional view of a more preferable embodiment of the molded product having burrs on the peripheral portion shown in FIG. 3, which is subjected to deburring work by an embodiment of the deburring device of the present invention.

FIG. 6 is a front view of one mode of a high temperature gas ejection unit according to an embodiment of the deburring device of the present invention.

FIG. 7 is a front view of another mode of the high temperature gas jetting means according to the embodiment of the deburring device of the present invention.

[Explanation of symbols]

1: Work placement table, 11: Holding jig, 12: Holding jig,
13: Holding jig, 2: Micro frame torch, 21:
Tip tip, 22: Gas filter, 23: Flashback prevention filter, 24: Cock, 25: Mounting jig, 3: Three-dimensional drive device, 31: X axis, 32: Y axis,
33: Z-axis, 4: Housing, 41: Square pipe, 42:
Square pipe, 43: Square pipe, 44: Square pipe, 45:
Beam, 46: Beam, 5: Cover, 6: Cover, 7: Cover,
8: Caster, 9: Start switch, W: Work, F:
Burrs, P: Burrs F near the work W

Claims (1)

[Claims] 1. A molded product comprising a holding means for holding a molded product having a burr on its peripheral edge, a high temperature gas spraying device for spraying a high temperature gas that melts a material forming the burr, and the high temperature gas spraying device to a molded product. A three-dimensional driving means that drives the high temperature gas to be ejected along the burr near the molded product, and melts the burr near the molded product to form the molded product. A deburring device, which separates burrs, melts burrs remaining on the molded product, and adsorbs the burrs on the molded product by the surface tension to smooth the burrs.