KR102379130B1 - Apparatus for elimanating burr - Google Patents

Abstract

The present invention relates to an apparatus for removing burr. More specifically, the present invention relates to an apparatus for removing burr that is capable of removing burr which is present in the parting line of an injection-molded product automatically and completely using hot air, and minimizing the loss of hot air in the process of removing burr from an injection-molded product. Furthermore, the apparatus for removing burr is configured to apply cold air to an injection-molded product, and thus prevents the physical properties of the injection-molded product from being changed due to hot air. The apparatus for removing burr according to the present invention comprises: a jig supporting an injection-molded product; and a hot air supply unit that removes burr by applying hot air to the injection-molded product supported by the jig.

Description

Deburring device {APPARATUS FOR ELIMANATING BURR}

The present invention relates to a deburring apparatus, and more particularly, to a deburring apparatus capable of automatically and completely removing burrs existing in a putting line of an injection product using hot air.

In general, a plastic injection product melts a plastic raw material and injects it into an injection molding space formed in an injection mold at high pressure to manufacture an injection product having the same shape as the injection molding space.

An injection mold for molding a plastic injection product is usually divided into a plurality of injection molds, and an injection molding space having a shape to be molded is formed in the plurality of divided injection molds.

Therefore, when a plastic injection product is to be molded using an injection mold, the plastic melt is injected into the injection molding space formed in the injection mold and filled. Then, a plastic injection product is manufactured by separating the injection mold and demolding the injection product molded in the injection molding space.

However, since the injection mold is usually manufactured separately in plurality, in order to manufacture an injection product, a plurality of separated molds are combined so that the divided molding space separated and formed in each of the molds is formed to form one completed injection molding space. Then, a plastic injection product is molded by injecting and filling a plastic melt into the injection molding space formed in the injection mold combined with each other. A gap is created on the joint surface, and the plastic melt is injected and filled into the gap created on the joint surface. Putting lines and burrs that protrude are generated.

Since the bonding surface of the injection mold is manufactured so that the injection product can be easily demolded and taken out, the putting line and the burr exist in a three-dimensional shape and location, and the burr may cause injury to the user's body, It must be removed as it can be a factor that deteriorates the quality of injection products.

Therefore, in order to remove the burr that is protruding from all plastic injection products that are demolded from the injection mold, the technology to remove the burr by blowing high-pressure hot air and compressed air is a technique for removing the burr from the injection mold. 1728979, Korean Patent Publication No. 10-2016-0106909, and the like.

In addition, in the case of injection products manufactured in a tubular shape among plastic injection products, the burr protruding on the outer surface can be removed with high-pressure air and hot air, but in the case of the burr formed on the inner surface, the high-pressure Because it is difficult or difficult to remove with the air and hot air of the operator, the operator manually removes the burr using an injection knife. In addition, since a lot of time and effort is required to manually remove the burr, there are problems such as not only the manufacturing cost of the injection product becomes expensive, but also defective products are generated.

Registered Patent Publication No. 10-1728979 Laid-open Patent Publication No. 10-2016-0106909

The present invention has been devised to solve the problems of the prior art, and it is possible to automatically and completely remove the burr existing in the putting line of the injection-molded product using hot air, and the loss of hot air in the process of removing the burr from the injection-molded product. An object of the present invention is to provide a deburring device that can minimize the physical properties of the injection-molded product by applying cold air to the injection-molded product and prevent the physical properties of the injected product from being changed by hot air.

The deburring apparatus according to the present invention includes: a jig for supporting an injection-molded product; and a hot air supply unit for removing burrs by applying hot air to the injection-molded product supported by the jig.

In addition, a plurality of the hot air supply units apply hot air to the putting line in a state in which the plurality of hot air supply units are arranged at regular intervals along the putting line positioned at the edge of the injection-molded product.

In addition, it further includes a cover for covering the upper area of the injection molding to prevent loss of hot air when the hot air supply unit is operated.

And, when the hot air supply unit is operated, it further includes a cooling unit for supplying cold air to the injection-molded material to prevent deformation of the physical properties of the injection-molded material.

In addition, the removal unit further includes a removal unit for removing foreign substances from the injection product on which the removal of the burr has been completed, wherein the removal unit includes a plurality of support pieces for partitioning and supporting the injection product in a vertical longitudinal direction on both inner side walls at regular intervals, and the upper surface a receiving unit whose opening is opened and closed by a cover; a pair of elastically deformable portions including a vertical portion disposed on one side and the other side of the receiving portion, respectively, and a curved portion formed at a lower end of the vertical portion; a support plate seated on the upper surface of the curved part; a coil spring spaced apart from each other at a predetermined distance on the upper surface of the support plate and supporting the lower surface of the accommodating part; and a deforming part disposed above the elastically deformable part and elastically deforming the elastically deformable part by repeatedly pressing the vertical part by a lifting operation.

The burr removal device according to the present invention can automatically and completely remove burrs existing in the putting line of the injection-molded product using hot air, and can minimize the loss of hot air in the process of removing the burrs from the injection-molded product. It has the effect of preventing the physical properties of the injection molding from being changed by hot air by applying cold air.

1 is a perspective view showing a deburring device according to an embodiment of the present invention.
Figure 2 is a perspective view showing a state in which the injection-molded product is seated in the deburring device according to an embodiment of the present invention.
3 is a perspective view showing the arrangement of the injection unit and the injection product applied to the deburring device according to an embodiment of the present invention.
Figure 4 is a state diagram of the use of the deburring device according to an embodiment of the present invention.
Figure 5 is a view showing a removal unit applied to the deburring device according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. Throughout the specification, like reference numerals are assigned to similar parts.

Figure 1 is a perspective view showing a deburring device according to an embodiment of the present invention, Figure 2 is a perspective view showing a state in which the injection product is seated in the deburring device according to an embodiment of the present invention, Figure 3 is this view It is a perspective view showing the arrangement of the injection unit and the injection product applied to the deburring apparatus according to an embodiment of the present invention, and FIG. 4 is a state diagram of the use of the deburring apparatus according to an embodiment of the present invention.

The deburring apparatus 1 according to an embodiment of the present invention can automatically and quickly remove the burrs present in the putting line 71 of the injection-molded product 70 using hot air, and in the process of removing the burrs It is a product that can prevent physical property deformation in the injection-molded product 70 while minimizing the loss of hot air.

To this end, the deburring device 1 according to an embodiment of the present invention may include at least any one or more of a jig 10 , a hot air supply unit 20 , a cover unit 30 , and a cooling unit 40 . can

The jig 10 may support the bottom surface of the injection-molded product 70 in a state disposed on the upper side of the work die 60 having a certain height and size.

A plurality of jigs 10 may be applied to remove burrs from a plurality of injection-molded products 70 at once, and may be disposed on the upper side of the work die 60 to be spaced apart from each other.

In the deburring apparatus 1 according to an embodiment of the present invention, the shape of the jig 10 is not limited to the shape shown in the drawing, and it is revealed that the shape of the jig 10 may be changed to correspond to the size and shape of the injection-molded product 70 .

An edge block 11 is formed at the edge of the jig 10 .

A putting line 71 formed along the longitudinal direction on the edge of the injection-molded product 70 is seated on the upper surface of the rim block 11 .

A plurality of accommodating holes 11a are disposed in the edge block 11 to be spaced apart from each other at regular intervals. Accordingly, the receiving hole 11a is located below the putting line 71 of the injection-molded product 70 .

The injection unit 21 of the hot air supply unit 20 to be described later is accommodated in the receiving hole 11a to spray hot air.

That is, the injection unit 21 ejects the hot air generated from the hot air supply unit 20 upward in a state accommodated in the receiving hole 11a, and the injected hot air is applied to the putting line 71 to remove burrs.

The working die 60 may be formed in a box shape in which one side is opened and closed by a door and a hot air supply unit 20 to be described later is accommodated therein.

The hot air supply unit 20 is configured to remove burrs by applying heat to the injection-molded product 70 supported by the jig 10 .

The hot air supply unit 20 is installed inside the working die 60 .

The hot air supply unit 20 is applied as a known product capable of generating hot air.

The hot air supply unit 20 may include a plurality of injection units 21 facing each of the receiving holes 11a at the lower side of the edge block 11 .

The injection unit 21 may be formed of a hose or tube.

At this time, the hot air supply unit 20 may be connected to one branch pipe (22).

The branch pipe 22 may include a plurality of branch holes spaced apart from each other by a predetermined interval to discharge the hot air generated by the hot air supply unit 20 to the branch.

In addition, the above-described injection unit 21 is coupled to the branch hole in a 1:1 ratio.

Therefore, the hot air generated by the hot air supply unit 20 is supplied to the inside of the branch pipe (22).

The hot air supplied to the inside of the branch pipe 22 is discharged to a branch through the branch holes and the injection unit 21 , and is evenly sprayed on the putting line 71 to remove all burrs present in the putting line 71 . .

At this time, the hot air supply unit 20 may be raised and lowered by the lifting drive unit 23 (not shown) installed in the inner space of the work die 60 .

The lift driving unit 23 may be formed of a hydraulic cylinder or a pneumatic cylinder.

In the state in which the injection product 70 is seated on the jig 10, the lifting driving unit 23 raises the hot air supply unit 20 to accommodate the injection units 21 in each receiving hole 11a to the putting line 71. To efficiently supply hot air.

In addition, the elevating driving unit 23 lowers the hot air supply unit 20 in a state in which the injection product 70 is separated from the jig 10 to withdraw the injection units 21 from the receiving hole 11a.

That is, the injection unit 21 is heated by the hot air of the hot air supply unit 20, and when the injection unit 21 maintains a state accommodated in the receiving hole 11a, the edge block 11 is unnecessarily heated or changes in physical properties. can cause

However, the injection unit 21 is controlled to be accommodated in the receiving hole 11a in a state in which the injection-molded product 70 is seated on the jig 10 , and in a state where the injection-molded product 70 is separated from the jig 10 , the injection unit 21 is ) is controlled to be drawn out to the lower side of the receiving hole 11a, it is possible to prevent unnecessary heating of the rim block 11 or change in physical properties.

For example, the work die 60 has a hot air supply unit 20 , an elevating driving unit 23 , a cylinder 61 for elevating the cover unit 30 to be described later, and a cooler for cooling the injection product 70 automatically. A button 62 for controlling may be installed.

For example, when the injection molding 70 is seated on the jig 10 and then the button 62 is pressed, the elevator driving unit 23 raises the hot air supply unit 20 to insert the injection unit 21 into each receiving hole 11a. The hot air supply unit 20 generates hot air, the cylinder 61 lowers the cover unit 30 , and the cooler can be programmed to generate cold air for cooling the injection molding 70 .

And, when the button 62 is pressed once again, the operation of the hot air supply unit 20 is stopped, the lift driving unit 23 lowers the hot air supply unit 20, and the cylinder 61 raises the cover unit 30, The chiller can be programmed to shut down.

On the other hand, the cover unit 30 is configured to prevent the loss of hot air when the hot air supply unit 20 is operated so that the hot air is efficiently applied to the injection molding 70 .

The cover part 30 may be lowered or raised with respect to the injection-molded product 70 supported on the jig 10 by driving the cylinder 61 installed on the upper side of the working die 60 .

The cylinder 61 may be formed of a pneumatic cylinder or a hydraulic cylinder, and the figure shows an example formed of a hydraulic cylinder.

The cover part 30 is disposed at the same number and at the same distance as the jig 10 , and is coupled to the bottom surface of one connecting plate 31 . And, the piston of the cylinder 61 is coupled to the upper surface of the connecting plate (31).

The cylinder 61 is operated by hydraulic pressure so that the piston is lowered or raised, whereby the connecting plate 31 and the cover part 30 are lowered or raised at the same time.

The cover part 30 may have a structure in which a bottom surface is opened and an empty space is formed therein.

The inner space of the cover part 30 functions to confine the hot air sprayed from the hot air supply unit 20 .

As shown in FIG. 4 , when the piston is lowered, the edge of the bottom surface of the cover part 30 is seated on the edge of the upper surface of the injection-molded product 70 to cover the upper region of the injection-molded product 70 .

Therefore, the hot air generated by the hot air supply unit 20 can be concentrated on the putting line 71 of the injection-molded product 70 without leaking to the outside.

Due to this, it is possible to efficiently remove the burr from the putting line 71 .

In this case, even if the cover part 30 is disposed on the upper side of the injection-molded product 70 , the edge of the injection-molded product 70 is exposed to the outside.

On the other hand, the cooling unit 40 is configured to prevent the physical properties of the injection molding 70 from being deformed by the hot air when the hot air supply unit 20 is operated.

The cooling unit 40 is a spray member having an air compressor (not shown) disposed inside or outside the working die 60 , a bellows tube 41 that is connected to the air compressor and protrudes from the upper surface of the working die 60 . (42) may be included.

An empty space connected to the inner space of the body of the bellows tube 41 is formed inside the injection member 42 , and an outlet is formed at the end to spray cold air.

By adjusting the body of the bellows tube 41 , the outlet of the injection member 42 may face the rim of the injection product 70 exposed to the outside of the cover part 30 .

Then, when the air compressor is operated through the control of the button 62 , the compressed air is injected into the injection product 70 . Accordingly, it is possible to cool the injection-molded product 70 to prevent the injection-molded product 70 from being deformed in physical properties by the hot air of the hot air supply unit 20 .

Next, the removal unit 50 applied to the deburring apparatus 1 according to an embodiment of the present invention will be described with reference to FIG. 5 .

5 is a view showing a removal unit applied to the deburring device according to an embodiment of the present invention.

The removal unit 50 is configured to remove foreign substances such as dust adhered to the injection-molded product 70 from which the burrs have been removed.

To this end, in the removal unit 50, a plurality of support pieces 511 for partitioning and supporting the injection-molded product 70 along the vertical longitudinal direction are formed on the inner side walls at regular intervals, and the opening on the upper surface is opened and closed by the cover 512. It includes an accommodating part 51 to be used, a vertical part 521 disposed on one side and the other side of the accommodating part 51, respectively, and a curved part 522 formed at the lower end of the vertical part 521, and is made of an elastic material. A pair of elastically deformable portions 52 formed, a support plate 53 seated on the upper surface of the curved portion 522, and the upper surface of the support plate 53 are spaced apart from each other by a predetermined distance, The coil spring 54 supporting the bottom surface and the elastic deformation part 52 are disposed on the upper side, and the vertical part 521 is repeatedly pressed by the lifting operation to elastically deform the elastically deformable part 52 . (55) may be included.

The lower side of the elastically deformable part 52 may be bolted to the ground or the upper surface of the workda.

The deformable portion 55 may include a pressure plate 552 disposed above the vertical portion 521 , and a cylinder 551 for elevating the pressure plate 552 .

Next, the operation of the above-described removal unit 50 will be described.

First, while accommodating the injection-molded product 70 in the interior of the accommodating part 51 , it is supported by the support piece 511 , and then the cover 512 is closed.

Thereafter, the pressure plate 552 is lowered by the cylinder 551 and then raised.

At this time, the cylinder 551 may be programmed to lower and then raise the pressure plate 552 about 3 to 5 times at intervals of about 5 to 15 seconds.

When the pressure plate 552 is lowered, the elastically deformable parts 52 are compressed to a certain level, and when the pressure plate 552 is raised, the elastically deformable parts 52 are restored to their original state by the elastic force.

When the elastically deformable parts 52 are compressed and expanded, the accommodating part 51 supported by the coil spring 54 repeatedly oscillates in the up and down directions to give the injection product 70 accommodated in the accommodating part 51 . vibration is generated.

Accordingly, dust or foreign substances attached to the injection-molded product 70 fall.

At this time, as shown in FIG. 2 , a plurality of through-holes 70a penetrating in the upper and lower directions are formed in the injection-molded product 70 , so that dust or foreign substances can easily fall through the through-holes.

Through the above-described removal unit 50 , dust or foreign substances attached to the injection-molded product 70 can be quickly and easily removed, thereby providing a clean injection-molded product 70 .

Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims described below rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. should be interpreted

1: deburring device 10: jig
11: border block 11a: receiving hole
20: hot air supply unit 21: injection unit
22: branch pipe 30: cover part
31: connection plate 40: cooling unit
41: bellows tube 42: injection member
50: removal unit 51: storage unit
511: support piece 512: cover
52: elastic deformation part 521: vertical part
522: curved part 53: support plate
54: coil spring 55: deformation part
551,61: cylinder 552: pressure plate
60: work die 62: button
70: injection molding 71: putting line

Claims (4)

Jig for supporting the injection molding;
a hot air supply unit for removing burrs by applying hot air to the injection-molded product supported by the jig;
a cover part covering an upper area of the injection-molded product to prevent loss of hot air when the hot air supply part is operated; and
Containing;
The removal unit,
a accommodating part in which a plurality of support pieces for partitioning and supporting the injection-molded product in a vertical longitudinal direction are formed on both inner side walls at regular intervals and the opening of the upper surface is opened and closed by a cover;
a pair of elastically deformable portions including a vertical portion disposed on one side and the other side of the accommodating portion, respectively, and a curved portion formed at a lower end of the vertical portion;
a support plate seated on the upper surface of the curved part; a coil spring spaced apart from each other at a predetermined distance on the upper surface of the support plate and supporting the lower surface of the accommodating part; and
Deburring device comprising a; is disposed on the upper side of the elastically deformable portion, and repeatedly pressurizes the vertical portion by a lifting operation to elastically deform the elastically deformable portion.
According to claim 1,
A deburring device for applying hot air to the putting line in a state in which a plurality of the hot air supply units are arranged at regular intervals along the putting line positioned at the edge of the injection-molded product.
delete According to claim 1,
The deburring device further comprising a cooling unit for supplying cold air to the injection-molded product to prevent physical property deformation of the injection-molded product when the hot air supply unit is operated.

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