KR101627747B1 - device for chamfering the hole formed in the injection mold - Google Patents

device for chamfering the hole formed in the injection mold Download PDF

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Publication number
KR101627747B1
KR101627747B1 KR1020160026977A KR20160026977A KR101627747B1 KR 101627747 B1 KR101627747 B1 KR 101627747B1 KR 1020160026977 A KR1020160026977 A KR 1020160026977A KR 20160026977 A KR20160026977 A KR 20160026977A KR 101627747 B1 KR101627747 B1 KR 101627747B1
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KR
South Korea
Prior art keywords
screw
housing
groove
bearing
return spring
Prior art date
Application number
KR1020160026977A
Other languages
Korean (ko)
Inventor
김진석
Original Assignee
주식회사 엠디티
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Filing date
Publication date
Application filed by 주식회사 엠디티 filed Critical 주식회사 엠디티
Priority to KR1020160026977A priority Critical patent/KR101627747B1/en
Application granted granted Critical
Publication of KR101627747B1 publication Critical patent/KR101627747B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/001—Housing of the drill, e.g. handgrip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/06—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by man-power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B23C3/126—Portable devices or machines for chamfering edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2220/00—Details of turning, boring or drilling processes
    • B23B2220/08—Deburring

Abstract

The present invention relates to a hole beveling device of an injection mold in order to remove a burr around a mold for injection or compression. The present invention comprises: a housing which is formed in a pipe shape by forming a storage hole inside and upper and lower open sides and has first and second screw units in the outer side of upper and lower end parts; a rotary unit which is supported to be rotated by a bearing in the housing, has a first screw including a screw groove extended from the upper side to the lower side, and includes a drill combining groove in the lower side; an operation unit which has a second screw including one or more screw jaws operating in the screw groove of the rotary unit and includes a handle in the upper side of the second screw; an upper cover unit which is combined with the upper end of the housing; a lower cover unit which is combined with the lower end of the housing; a return spring which is formed to return the operation unit to the initial position after pressurizing the operation unit by being formed between the lower side of the handle formed in the operation unit and the upper side of the upper cover unit; a pantograph unit which is formed between the lower side of the handle formed in the operation unit and the upper side of the upper cover unit and protects the return spring by being formed in the outer side of the return spring; and a drill which is combined with the drill combining groove of the rotary unit. The provided hole beveling device of an injection mold is convenient to carry and is able to improve workability and worker convenience without power.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device for chamfering an injection mold,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an injection molding machine for removing burrs formed around a hole formed in a mold such as injection molding or compression molding. More specifically, The present invention relates to an injection molding machine, and more particularly,

Generally, when manufacturing a mold, a plurality of holes for joining bolts or pins are machined to join the parts.

Since most of the holes are machined through machining, burrs are generated and must be removed.

Conventionally, it has been common to use a desk hand drill or the like to remove a burr formed in a hole of a mold.

Prior arts of this kind have disclosed only a chamfer for removing the burrs of straight corners as disclosed in Korean Patent Laid-Open No. 10-2009-0021066.

On the other hand, the molds which can not be laid on the tool stand of the drill machine among the molds were worked by the user using the electric drill machine.

Accordingly, after the worker connects the hand drill to the lead wire, the burr formed in the hole of the mold is removed in the site.

If the mold is in a certain space, the work is performed after the power is connected to the lead wire only at one place. Otherwise, the work for connecting the lead wire must be repeatedly performed. Respectively.

It is an object of the present invention to solve the above-mentioned problems and to provide a hollow bevel of an injection mold capable of improving the workability and improving the convenience of the operator while performing a simple and portable operation .

According to the present invention, a screw is used to convert a linear movement of a linear motion and a drill is rotated in a non-powered manner to remove a burr formed in a hole of the mold.

Further, after the burr formed in the hole of the metal mold is removed, the operation portion is returned to the first position by the return spring, and subsequent operations are possible.

The shock absorbing and returning spring inserted into the second screw of the rotary part prevents the damage due to the collision of the first and second screws and also works to increase the efficiency of the operation so that the operation part can return to the first place. It is a useful invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a hole pattern of an injection mold according to the present invention. FIG.
Fig. 2 is an exploded perspective view of Fig. 1; Fig.
Fig. 3 is an exploded perspective view of Fig. 2 taken at different angles. Fig.
Fig. 4 is a sectional view of Fig. 1; Fig.
FIG. 5 is a view showing the state of use of the injection molding machine according to the present invention. FIG.

Hereinafter, the configuration of the present invention will be described in more detail with reference to the accompanying drawings.

First, as shown in FIGS. 1 to 4, the housing 10 is opened upward and downward to have a pipe shape as a whole, and a receiving hole 11 is formed inside the housing 10.

The housing 10 has a structure for grasping by the operator, which is not shown in detail in the drawing, but has a structure in which an emboss pattern or a narrowing ring is formed on the outside in order to prevent slippage.

The first and second threaded portions B1 and B2 are formed on the upper and lower ends of the housing 10. The first and second threaded portions B1 and B2 are not particularly limited, It is better to have smaller diameter.

The rotation part 20 is inserted into the accommodation hole 11 of the housing and is supported by bearings B at the upper and lower ends of the accommodation hole 11 formed in the housing 10, .

Therefore, bearing grooves 23 are formed at the upper and lower ends of the outer side of the rotary part 20 so that the bearings B can be engaged.

In addition, a hole-shaped second screw 21 including a screw groove 21a extending from the upper side to the lower side is formed on the inner side of the rotation part 20.

Although the screw groove 21a is formed with three screw grooves 21a in the drawing, the screw groove 21a is not limited thereto and may be formed in various numbers.

However, in order to smoothly transmit the force, at least two points should be formed, and preferably three to four points are preferable.

If the number of the screw grooves 21a exceeds 4, the number of the screw grooves 21a must be so large that the size of the screw grooves 21a must be small. Therefore, Failure may occur.

A drill engaging groove 22 is formed on the lower side of the rotary part 20 so as to extend from the lower side to the upper side.

The operation portion 30 is configured to be coupled to the rotation portion 20 and includes a bolt-shaped member 31a having a screw groove 31a corresponding to the screw groove 21a formed in the rotation portion 20, 1 screw 31 is formed on the first screw 31. A handle 32 is formed on the upper side of the first screw 31 so that the operator can grip the operation portion 30. [

Therefore, when the operator grips the handle 32 and presses the operation portion 30, the operation portion 32 is vertically moved and the first screw 31 formed in the operation portion 30 causes the operation portion 20 To be able to rotate.

The amount of rotation of the second screw 21 of the rotary part 20 and the first screw 31 of the actuating part 30 is about three to five times when the operator presses the actuating part 30 once It is better to process the pitch and the number of turns so that the rotation can be done.

Next, the upper cover 40 is configured to block the upper open portion of the housing 10, and the inner side portion of the upper portion is provided with the first screw portion B1 of the housing 10 1 nut portion N1 so as to be fastened to the housing 10 by a screw.

The upper cover 40 is formed at a position where the first screw 31 of the actuating part 30 is coupled to the rotary part 20 and the first screw 31 is engaged with the rotary part 20 A first through hole 42 is formed at the center of the inner side.

Particularly, the rotation part 20 coupled to the storage hole 11 of the housing 10 described above is rotatably coupled by a bearing B. The bearing B is rotatably supported by the rotation part 20 in the gravity direction. No means is provided which is supported by the bearing groove 23 but can support the bearing B in the opposite direction.

The upper cover 40 is formed with a first pressing jaw 41 so as to press the upper side of the housing 10 and the upper side of the bearing B. [

As described above, the rotation unit 20 functions to rotate within the housing 10 by the operation unit 30. When the contact with the upper cover unit 40 is performed at this time, The rotational force of the part 30 is reduced by half and abrasion may occur.

Therefore, in the present invention, the first contact prevention groove 43 is formed in the upper part of the rotary part 20 of the upper cover part 40.

Next, the lower cover portion 50 is configured to block the lower side of the housing 10 similarly to the upper cover portion 40 described above.

A second nut portion N2 corresponding to the second screw portion B2 of the housing 10 is formed at an inner edge portion of the lower cover portion 50 so that the screw can be fastened to the housing 10 .

A second through hole 52 is formed in the center of the lower cover 50 so that interference does not occur when the lower end of the rotation unit 20 protrudes. Configure.

Particularly, like the upper cover portion 40, the lower cover portion 50 is formed with the second presser tab 42 so as to support the lower side of the housing 10 and the lower side of the bearing B, The second contact prevention groove 53 is formed so that interference does not occur when the rotation of the second contact prevention groove 53 is performed.

Next, the return spring 60 is formed between the lower portion of the handle 32 and the upper cover portion 40 of the operation portion 30 described above, so that the worker presses the operation portion 30 to perform a vertical movement, To the seat of the user.

Particularly, the screw jaw 31a formed in the first screw 31 of the operation part 30 operates in the screw groove 21a of the rotary part 20 to rotate the rotary part 20, The screw jaw 31a must be operated again so that the actuating portion 30 can be vertically moved to the first position.

Since the return spring 60 can move forward, backward, left, and right during operation, the return spring 60 can be moved to the lower side of the handle 32 formed on the operating portion 30 and the upper side The spring fixing portions h1 and h2 are further configured.

Although the spring fixing portions h1 and h2 are shown in the form of a plate in the form of a plate on the lower side of the handle 32 and on the upper side of the upper cover portion 40 in the figure, the spring fixing portions h1 and h2 may be formed by protruding the jaws.

The bellows portion 70 is formed on the outer side of the return spring 60 to protect the return spring 60 and to prevent the return spring 60 from being exposed to the outside. So that the curved portion is folded at the time of compression and expanded at the time of expansion.

The bellows portion 70 is not particularly limited, but is preferably made of synthetic resin or cloth.

Next, the drill 80 is configured to be coupled to the drill-engaging groove 22 formed in the rotary part 20, and the burr of the entrance part of the hole 1a in the metal mold 1 It is a common configuration that can be removed.

That is, the drill 80 described above is formed with a drill bit 81 at its tip end and a coupling body 82 at its rear end that can engage with a drill engaging groove 22 formed in the rotary part 20 have.

The drill 80 may be engaged with the drill-engaging groove 22 of the rotary part 20 by an intermediate fit or a holder for securing the drill 80 to the rotary part 30 It can be formed on the lower side and coupled.

In the present invention, a buffering action for preventing collision between the lower side of the first screw 31 of the actuating part 30 and the bottom surface of the second screw 21 of the rotary part 20, And a spring 90 for buffering and returning to be inserted into the second screw 21 in the form of a hole for returning the operating portion 30 to the first position.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

First, the injection molding machine 100 according to the present invention can be used without any additional power, so that convenience of the user can be ensured and, at the same time, It can be very effectively used to remove burrs after formation.

The operation of the injection mold 100 of the injection mold will be described with reference to FIGS. 4 to 5. FIG.

First, after forming the hole 1a in the mold 1, the drill 80 of the hole drilling machine 100 of the present invention is formed in order to remove a burr formed in the hole 1a. The tip of the drill bit 81 is arranged at a position where the burr of the hole 1a is formed (see Fig. 8 (a)).

Thereafter, the operator grips the handle 32 of the operating portion 30 of FIG. 4 with one hand, and the operating portion 30 is pressed by the other hand of the housing 10 after gripping the outside of the housing 10.

The screw jaws 31a formed in the first screw 31 of the actuating part 30 interlock with the screw groove 21a formed in the second screw 21 of the rotary part 20, The rotation unit 20 is rotated by the vertical motion of the first and second rotating members 30 and 30.

In particular, since the rotation unit 20 is coupled to the housing 10 so as to be rotatable by the bearing B, the rotation unit 20 rotates without any friction.

The drill bit 81 formed on the drill 80 of the rotary part 20 rotates to remove the burr formed in the hole 1a of the mold 1. [ Reference.)

Particularly, in the present invention, when the amount of rotation of the second screw 21 of the rotary part 20 and the first screw 31 of the actuating part 30 is 3 to 5 rotations when the actuating part 30 is pressed once So that the burr can be removed at a time.

That is, the metal mold 1 of the present invention is for removing a burr formed in the hole 1a of the metal mold 1 which can not be mounted on a small table-top drilling machine or the like, and the diameter of the hole 1a is relatively small It is possible.

Meanwhile, in the course of the vertical movement of the operation part 30, the return spring 60 coupled to the handle 32 of the operation part 30 and the upper side of the housing 10 is compressed to generate an elastic force .

Accordingly, when the worker removes the force applied to the operation part 30, the worker is returned to the original position by the elastic force of the return spring 60 and the burr of the other hole 1a in the mold 1 is removed It is possible to carry out the work immediately.

The bellows portion 70 is formed between the operation portion 30 and the upper cover portion 40 to protect the return spring 60 and prevent the return spring 60 from being held by the operator. It is possible to prevent a safety accident that may occur due to a finger being caught by the user.

The spring 90 for buffering and returning, which is coupled to the bottom surface of the second screw 21 of the rotary part 20, is also compressed in the same manner as the return spring 60 when the operating part 30 is pressed.

The buffering and returning spring 90 prevents the tip of the first screw 31 from colliding with the bottom surface of the second screw 21 during vertical movement of the operating part 30, An elastic force is applied so that the operating portion 30 can be returned to the first position in the same manner as the return spring 60 when the force applied by the operator is removed so that the worker removes the burr of the next hole 1a So that the workability can be improved.

As described above, according to the present invention, the burr formed in the hole 1a in the mold 1 is removed through the once pressing operation of the operation part 30. Of course, the force applied to the operation part 30 after the operation The operation portion 30 is returned to the first position by the resilience of the return spring 60 and the buffer spring 90, thereby enabling continuous operation.

Particularly, it can be very useful in removing burrs of the holes 1a in the mold 1 which can not be placed on the work table of the small table-top drill machine.

In addition, it is possible to obtain an effect of being excellent in portability in a non-powered manner and having a low production cost and being universally usable.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

B: Bearing
10: Housing
11: Storage hole B1: First screw part B2: Second screw part
20:
21: second screw 21a: screw groove 22: drill engaging groove 23: bearing groove
30:
31: First screw 31a: Screw jaw 32: Handle h1: Spring fixing part
40: upper cover part
41: first pressing jaw 42: first through hole 43: first contact preventing groove
h2: spring fixing portion N1: first nut portion
50: Lower cover part
51: second pressing jaw 52: second through hole 53: second contact prevention groove
N2: second nut portion
60: return spring
70: Bellows
80: Drill
81: drill bit 82: engaging body portion
90: Spring for buffering and returning
100: Hole of the injection mold

Claims (5)

A housing 10 having a storage hole 11 formed on its inner side and a pipe shape opened on its upper and lower sides and first and second threaded portions B1 and B2 formed on the outer sides of its upper and lower ends;
A second screw 21 is formed on the inside of the housing 10 so as to be rotatable by a bearing B and includes at least one screw groove 21a extending from the upper side to the lower side And a drill engaging groove 22 on the lower side;
A first screw 31 including at least one screw jaw 31a that operates in a screw groove 21a of the rotary part 20 is formed and a handle 32 is provided at an upper side of the first screw 31, An operating portion 30 which forms an opening;
An upper cover 40 coupled to an upper opening of the housing 10;
A lower cover part 50 coupled to a lower end opening of the housing 10;
The return spring 30 is formed between the lower side of the handle 32 formed on the operation part 30 and the upper side of the upper cover part 40 and returns the operation part 30 to the first position after the operation part 30 is pressed. (60);
A bellows part 70 formed on the outer side of the return spring 60 and formed between the lower side of the handle 32 formed on the operation part 30 and the upper side of the upper side cover part 40 for protecting the return spring 60 ); And a drill (80) coupled to the drill coupling groove (22) of the rotary part (20)
A first nut portion N1 corresponding to the first screw portion B1 of the housing 10 is formed on the upper cover portion 40 and a bearing nut B abuts against the upper surface of the bearing B and the housing 10, A first pressurizing jaw 41 capable of pressurizing the first screw 31 is formed at an inner central portion thereof so as not to be in contact with the first screw 31 of the operating portion 30, A first contact preventing groove 43 is formed to prevent contact with the upper side of the actuating part 30,
The lower cover portion 50 is formed with a second nut portion N2 corresponding to the second screw portion B2 of the housing 10 and has a bearing B and a lower side surface of the housing 10, A second pressurizing jaw 51 capable of pressurizing the bearing B is formed and a second through-hole 51 having a diameter larger than the diameter of the lower end of the rotary part 20 is provided at an inner center part thereof so as not to come into contact with the lower end of the rotary part 20. [ And a second contact prevention groove (53) for preventing contact with the lower end of the rotation part (20) is formed in the hole (52).
2. The injection molding machine as claimed in claim 1, wherein the rotation part (20) further comprises a bearing groove (23) to which the bearing (B) can be coupled.
The hinge mechanism according to claim 1, further comprising spring fixing portions h1 and h2 for fixing the return spring 60 to the lower end of the handle 32 and the upper end of the upper cover 40, Characterized by being constructed of an injection mold of an injection molding machine.
delete The method as claimed in claim 1, wherein, when the first screw (31) of the operating part (30) is inserted into the bottom surface of the second screw (21) formed in the rotary part (20) Further comprising a spring (90) for returning the operating portion (30) to its original position while preventing collision with the bottom surface of the operating portion (21).
KR1020160026977A 2016-03-07 2016-03-07 device for chamfering the hole formed in the injection mold KR101627747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160026977A KR101627747B1 (en) 2016-03-07 2016-03-07 device for chamfering the hole formed in the injection mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160026977A KR101627747B1 (en) 2016-03-07 2016-03-07 device for chamfering the hole formed in the injection mold

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KR101627747B1 true KR101627747B1 (en) 2016-06-08

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05118597A (en) * 1991-10-25 1993-05-14 Sanyo Electric Co Ltd Humidifying device
JP2002224969A (en) * 2001-01-31 2002-08-13 Matsushita Electric Ind Co Ltd Screwdriver and method for screw driving using it
KR101572008B1 (en) * 2015-09-18 2015-11-25 이상동 Built-in tools for deburring unit automatic control of the load

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05118597A (en) * 1991-10-25 1993-05-14 Sanyo Electric Co Ltd Humidifying device
JP2002224969A (en) * 2001-01-31 2002-08-13 Matsushita Electric Ind Co Ltd Screwdriver and method for screw driving using it
KR101572008B1 (en) * 2015-09-18 2015-11-25 이상동 Built-in tools for deburring unit automatic control of the load

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