KR101621753B1 - device for separating the wedge block formed in the injection mold - Google Patents

device for separating the wedge block formed in the injection mold Download PDF

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Publication number
KR101621753B1
KR101621753B1 KR1020160026958A KR20160026958A KR101621753B1 KR 101621753 B1 KR101621753 B1 KR 101621753B1 KR 1020160026958 A KR1020160026958 A KR 1020160026958A KR 20160026958 A KR20160026958 A KR 20160026958A KR 101621753 B1 KR101621753 B1 KR 101621753B1
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KR
South Korea
Prior art keywords
bolt
wedge block
groove
body portion
driving
Prior art date
Application number
KR1020160026958A
Other languages
Korean (ko)
Inventor
김진석
Original Assignee
주식회사 엠디티
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Publication date
Application filed by 주식회사 엠디티 filed Critical 주식회사 엠디티
Priority to KR1020160026958A priority Critical patent/KR101621753B1/en
Application granted granted Critical
Publication of KR101621753B1 publication Critical patent/KR101621753B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B33/00—Hand tools not covered by any other group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/36—Moulds having means for locating or centering cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/36—Moulds having means for locating or centering cores
    • B29C2045/363—Moulds having means for locating or centering cores using a movable core or core part

Abstract

The present invention relates to a wedge block separation tool for an injection mold. The wedge block separation tool can easily separate a wedge block which is for fixing, coupling, and setting a reference surface of a core in upper and lower mold frames. The wedge block separation tool includes: a body unit; a hitting means for hitting the body unit; a driving means which is formed on the body unit to rotate a bolt; and a driving unit which is rotated by the driving means to rotate the bolt to couple the bolt to the wedge block. The wedge block separation tool can simply couple the bolt to the wedge block through the driving means and the driving unit, thereby improving workability and convenience for a worker. The wedge block separation tool employs a simple structure of hitting the body unit through a hitting means to enhance separation efficiency of the wedge block while enabling the operation of easily releasing the coupling of the wedge block which is coupled to the bolt.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wedge-

The present invention relates to a wedge block separating mechanism of an injection mold for easily separating a wedge block for setting and fixing a reference plane of a core in upper and lower molds.

In general, injection molds are produced by injecting molten material into upper and lower molds, or a core including cavities formed by injection molding of molten material in a set of left and right molds.

Such an injection mold is usually used by inserting a core including a cavity into upper and lower molds. In this case, since the cavity is manufactured using an expensive mold material, the upper and lower molds Make it smaller than the mold.

Then, a wedge block having a wedge and a bolt groove formed on one or both surfaces of the upper and lower molds is inserted into the wedge surface formed on the upper and lower molds to form a reference surface And the core is fixedly coupled at the same time.

Meanwhile, in the core having the above-described structure, a correction operation may occur due to a reason such as a case where a product is not produced in a desired shape by the user, and therefore, the core must be separated in the upper and lower molds.

As a related patent, Korean Patent No. 10-0427981, "Mold Core Separation Chamber", there is also a patent for a device for separating a core, Korean Registered Utility Model No. 20-0407532, "Mold having a separate core Quot; block structure of the core "as shown in Fig.

(Patent Document 1) KR10-0427981 B1, Mold Core Separation Device

(Patent Document 2) KR20-0407532 Y1, a block structure of a mold having a separate core

However, most of the above-mentioned technologies are very complicated and difficult to use. Especially, devices for separating cores are not suitable to be used for portable purposes.

In order to solve the above problems, the wedge block separating mechanism of the injection mold of the present invention has a simple and easy to carry, and a bolt is fastened to the bolt groove formed in the wedge block, A wedge block separating mechanism for separating the wedge block from the wedge block, thereby improving the user's convenience and workability.

Another object of the present invention is to easily release the fastening of the wedge block coupled to the bolt after the detachment of the wedge block.

The bolts can be easily fastened to the bolt grooves formed in the wedge block through the driving unit rotated by the driving means and the driving means which are operated by the upward and downward pressures, thereby improving the workability.

Particularly, since the ball nut for rotating the ball screw of the driving part rotates through the rolling contact, the driving part can be easily rotated by the bearing outside the rotating part of the driving part, Can be improved.

In addition, the wedge block can be easily removed with a simple structure in which the body is hammered by the hitting means, and the size is small and the portability is simple.

In addition, after the wedge block is separated, the unclamping operation of the wedge block coupled to the bolt can be easily released by simply pulling the driving means to improve workability and convenience, It is possible to completely remove the bolt from the bolt groove in the unlocking operation after the fastening by the spring formed between the cover and the bolt, which is a useful invention in which no further work for releasing the wedge block from the bolt occurs.

1 is a perspective view illustrating a wedge block separating mechanism of an injection mold according to the present invention.
Fig. 2 is an exploded perspective view of Fig. 1; Fig.
3 is a sectional view of a wedge block separating mechanism of an injection mold according to the present invention.
4 is a state diagram showing a preparation state for separating a wedge block through the present invention;
FIG. 5 is a view showing a state where a bolt is fastened to a wedge block through the present invention. FIG.
6 is a state diagram showing a process for separating a wedge block using the hitting means of the present invention.

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

4 to 6, when the core 1 including a cavity (not shown) constituting a conventional injection mold is coupled to the upper and lower mold halves 2, the core 1 And to separate the wedge block 3, which is engaged with the upper and lower mold halves 2, in order to fix the core 1.

First, the body 10 is formed into a cylindrical shape as shown in FIGS. 1 to 3, and a space 11 formed through the inside of the body 10 is formed as a pipe.

The body 10 has upper and lower engagement protrusions 12, 13 formed at upper and lower ends thereof.

Here, the upper and lower latching jaws 12 and 13 are shown as a single unit in the figure, but they may be manufactured in a separate type and then fastened through a screw fastening method or a fastening method using bolts.

Next, the hitting means 20 is arranged between the upper and lower engagement protrusions 12, 13 of the body portion 10 described above, and is formed in the shape of a pipe as a whole.

The driving unit 30 is configured to be inserted into the space 11 formed in the body 10 and includes a rotating body 31, a bolt coupling groove 32 and a ball screw 33 have.

The rotating body 31 is formed at the lower end of the driving unit 30 and has a bearing seat groove 31a to which the bearing 41a can be coupled at upper and lower ends.

That is, the outer ring of the bearing 41a is coupled to the wall surface of the space portion 11 of the body portion 10, and the inner ring of the bearing 41a is coupled to the bearing seat groove 31a of the rotating body 31, 10 in a rotatable manner.

The bolt coupling groove 32 is formed in the shape of a hole extending upward from the lower side of the rotating body 31 to be able to engage the bolt 50.

It is preferable that the bolt coupling groove 32 is formed so as to increase the fixing force with the rotating body 31 and to be threaded to the rear end of the corresponding bolt 50 so as to be coupled through the screw connection.

The ball screw 33 described above is formed on the upper side of the rotating body 31 and has a groove section formed in a circular shape.

The driving unit 40 is configured to rotate the driving unit 30 and includes a plurality of balls 41a therein so as to be interlocked with the ball screw 33 formed in the driving unit 30. [ And an operating rod 42 and a knob 43 are formed on the upper side of the ball nut 41. When the operator presses the knob 43, the ball nut 41 Can move upward and downward to rotate the ball screw 33. As shown in Fig.

Here, the ball nut 41 may be coupled with the operation rod 42 through a normal welding connection or a bolt / nut (not shown in the drawing).

Meanwhile, in the present invention, the upper and lower covers 60 and 70 can be further formed on the body 10 having the upper and lower sides opened.

The upper cover 60 blocks the upper surface of the body 10 so that the upper cover 60 does not separate from the body 10 during operation of the driving means 40, At the same time that the driving part 30 is prevented from being detached from the body part 10,

The upper cover 60 may be coupled to the body 10 and the upper cover 60 by forming a screw thread or by forming a coupling hole on the upper cover 60 and the upper surface of the body. And can be coupled through a fastening method by a bolt.

The lower cover 70 may be formed by forming a thread on the lower side surface of the body portion 10 and the lower side cover 70 as in the case of the upper side cover 60 or by joining the lower side cover 70 and the lower side of the body portion 10 A thread may be formed on the lower end of the body 10 protruding from the body 10 of the driving unit 30 and a screw thread may be formed on the upper side of the upper cover 60 And a thread may be formed at the corresponding position to be combined.

In the present invention, a spring (not shown) is disposed between the upper end of the ball nut 41 formed in the driving means 40 inserted in the body 10 and the upper cover 60 covering the opened upper surface of the body 10, (S) may be further included.

A preferred embodiment of the wedge block separating mechanism of the present invention having the above-described structure will be described.

First, the wedge block separating mechanism 100 of the injection mold of the present invention sets the reference plane while fixing the core 1 including the cavity coupled to the upper and lower mold halves 2 constituting the injection mold. For separating the wedge block (3) coupled with the core (1) in the upper and lower die molds (2).

Therefore, in order to separate the wedge block 3 described above by using the present invention, the handle 43 of the driving means 40 is pulled upward while gripping the wedge block 3 as shown in Fig.

At this time, a spring S is formed between the upper surface of the ball nut 41 of the driving means 40 and the upper cover 60 so that the upper surface of the ball nut 41 of the driving means 40 is covered with the upper cover The ball nut 41 can be prevented from being damaged by preventing the ball nut 41 from being in contact with the ball nut 60 and the ball nut 41 and the upper cover 60 can be disposed apart from each other.

Then, the lower surface of the bolt 50 is brought into contact with the bolt groove 3b formed in the wedge block 3. At this time, the bolt 50 and the bolt groove 3b are formed by using the wedge block separating mechanism 100 of the injection mold according to the present invention in a state where the lower side of the bolt 50 is aligned with the bolt groove 3b forming the thread. Or the knob 43 of the driving means 40 is slightly pushed in the direction of the load so that the bolt 50 is rotated so that a part of the bolt 50 can be fastened.

4, in the state where the bolt 50 is partially fastened to the bolt groove 3b as described above, the operator holds the outer side of the body portion 10 while the other hand is engaged with the driving means 40 The handle 43 is pressed downward.

The ball nut 41 coupled to the driving rod 42 is linearly moved in the downward direction and the ball 41a formed in the ball nut 41 is circulated in the driving unit 40, And the ball screw 33 formed in the ball screw 30 is moved.

Accordingly, the ball screw 33 is rotated by the movement of the ball 41a formed on the ball nut 41, and the bolt (not shown) coupled to the lower side of the driving unit 30 50 are engaged with the bolt grooves 3b formed in the wedge block 3. As the ball nut 41 moves in the downward direction, And inserted into the insertion hole 42a.

The bearing B is formed at the upper and lower ends of the rotator 31 formed in the driving unit 30 in the course of the rotation of the driving unit 30 by the ball nut 41 of the driving unit 40, So that the rotation of the driving unit 30 can be smoothly performed.

Particularly, the ball nut 41 and the ball screw 33 described above change their directions without any frictional force when the linear motion is converted into rotational motion by the movement of the ball 41a, Can be fastened to the bolt groove 3b formed in the wedge block 3.

5, when the wedge block 3 is coupled with the present invention as described above, the operator instantaneously moves the hitting means 20 coupled to the outside of the body 10 upward, The wedge block 3 fastened to the bolt 50 is struck by the striking load received by the body portion 10 so that the upper and lower mold halves 2 are engaged with each other, It is possible to easily separate the wedge block 3 which has been coupled by the wedge 3a.

Thus, the wedge block 3 separated from the upper and lower mold halves 2 is in a state of being fastened by the bolts 50.

Therefore, when the worker fixes the wedge block 3 to a separate clamping device (not shown in the drawing), or the handle 43 formed on the drive means 40 in a state in which the wedge block 3 is stepped on, The driving means 40 is reversely rotated in the direction of releasing the engagement between the bolt 50 and the bolt groove 3b so that the fastening with the wedge block 3 can be easily released.

Here, in the present invention, a spring S is formed between the upper surface of the ball nut 41 and the upper cover 60 of the driving means 40 so that the lower cover 60 is lowered from the upper cover 60 before the first driving means 40 is pressed. Direction.

Therefore, when the bolt 50 fastened to the bolt groove 3b of the wedge block 3 is released, the elastic force of the spring S is generated when the handle 43 of the driving means 40 is pulled upward. The lower side of the bolt 50 is completely inserted into the bolt groove 3b because the amount of rotation generated to release the engagement is greater than the amount of rotation that was made to fasten the initial bolt 50 to the bolt groove 3b 3b. Thus, the convenience of the operator can be improved.

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.

1: core 2: upper and lower mold frame
3: Wedge block 3a: Wedge 3b: Bolt groove
10:
11: space portion 12: upper jaw 13: lower jaw
20: Hitting means
30:
31: Rotor 31a: Bearing seat groove
32: bolt connecting groove 33: ball screw
40: driving means
41: ball nut 41a: ball 42: operating rod 42a: insertion hole 43: handle
50: Bolt
60: Upper cover
70: Lower cover
S: Spring
100: wedge block separating mechanism of injection mold

Claims (4)

When the core 1 including the cavity is coupled to the upper and lower mold halves 2, the upper and lower mold halves 2 are provided on the side surface of the core 1 in order to form the fixed coupling and reference plane of the core 1 A wedge block separating mechanism of an injection mold for separating a wedge block (3) including a wedge (3a) and a bolt groove (3b)
A body portion 10 having a hollow portion 11 formed on an inner side thereof, a pipe-shaped upper and lower portions opened and having upper and lower engagement protrusions 12 and 13 formed on upper and lower ends thereof;
And is disposed between the upper and lower latching protrusions 12 and 13 of the body portion 10 so that the upper latching jaw 12 of the body portion 10 can be inserted into the body portion 10, A hitting means (20) configured to strike a horn;
A bearing seat groove 31a is formed in the upper and lower ends of the space portion 11 of the body portion 10 so as to be rotatable by the bearing B and a lower portion of the bearing seat groove 31a is further projected from the body portion 10, (30) comprising a bolt coupling groove (32) formed on the lower side of the rotary body (31) and a ball screw (33) formed on the upper side of the rotary body (31);
And a ball 41a inserted into the space portion 11 of the body portion 10 so as to be vertically and vertically movable and interlocked with the ball screw 33 of the driving portion 30, (42) formed on the upper side of the ball nut (41) and having an insertion hole (42a) for inserting the ball screw (33) A drive means (40) forming a handle (43) capable of being gripped by an operator;
A bolt 50 that engages with the bolt coupling groove 32 of the driving unit 30; And
Upper and lower covers 60 and 70 are further formed on the upper and lower sides of the body 10,
A spring S is further provided between the upper side of the ball nut 41 and the upper cover 60 of the driving means 40 coupled to the space portion 11 of the body portion 10,
The bolt coupling groove 32 of the driving unit 30 and the bolt 50 are configured to be coupled by screwing,
The bolts 50 are arranged in the bolt grooves 3b formed in the wedge block 3 inserted in the upper and the lower mold frame 2 and then the driving portion 30 is rotated by the vertical movement of the driving means 40 The bolts 50 are fastened to the bolt engagement grooves 32 and then the hitting unit 20 is used to strike the body 10 to separate the wedge block 3 from the upper and lower mold halves 2,
The upper surface of the ball nut 41 and the upper cover 60 are spaced apart from each other while preventing the upper cover 60 from coming into contact with the side surface of the ball nut 41 of the driving means 40, The spring S is further compressed and the ball nut 41 moves further in the vertical direction than the amount of rotation generated when the bolt 50 is fastened to the bolt groove 3a by the arranged spring S And the bolt (50) is operated so as to completely release the fastening in the bolt groove (3b). delete delete delete
KR1020160026958A 2016-03-07 2016-03-07 device for separating the wedge block formed in the injection mold KR101621753B1 (en)

Priority Applications (1)

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KR1020160026958A KR101621753B1 (en) 2016-03-07 2016-03-07 device for separating the wedge block formed in the injection mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160026958A KR101621753B1 (en) 2016-03-07 2016-03-07 device for separating the wedge block formed in the injection mold

Publications (1)

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KR101621753B1 true KR101621753B1 (en) 2016-06-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114800376A (en) * 2022-03-10 2022-07-29 靖江佳尔福科技有限公司 Rotating-ring assembly fixture is prevented to driving disk
WO2023145982A1 (en) * 2022-01-25 2023-08-03 백운기 Spiral screwdriver

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900005423Y1 (en) * 1986-12-30 1990-06-18 주식회사 금성사 Pin exclusion tool
JP2002224969A (en) * 2001-01-31 2002-08-13 Matsushita Electric Ind Co Ltd Screwdriver and method for screw driving using it
KR20110110902A (en) * 2010-04-02 2011-10-10 김근식 Fixing pin separating tool
JP2015016548A (en) * 2013-07-09 2015-01-29 富泰華工業（深▲セン▼）有限公司 Driver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900005423Y1 (en) * 1986-12-30 1990-06-18 주식회사 금성사 Pin exclusion tool
JP2002224969A (en) * 2001-01-31 2002-08-13 Matsushita Electric Ind Co Ltd Screwdriver and method for screw driving using it
KR20110110902A (en) * 2010-04-02 2011-10-10 김근식 Fixing pin separating tool
JP2015016548A (en) * 2013-07-09 2015-01-29 富泰華工業（深▲セン▼）有限公司 Driver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023145982A1 (en) * 2022-01-25 2023-08-03 백운기 Spiral screwdriver
CN114800376A (en) * 2022-03-10 2022-07-29 靖江佳尔福科技有限公司 Rotating-ring assembly fixture is prevented to driving disk
CN114800376B (en) * 2022-03-10 2023-12-01 靖江佳尔福科技有限公司 Rotating ring assembly fixture is prevented to movable plate

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