KR101706988B1 - Eject pin jigs for manufacture of molds - Google Patents
Eject pin jigs for manufacture of molds Download PDFInfo
- Publication number
- KR101706988B1 KR101706988B1 KR1020150059527A KR20150059527A KR101706988B1 KR 101706988 B1 KR101706988 B1 KR 101706988B1 KR 1020150059527 A KR1020150059527 A KR 1020150059527A KR 20150059527 A KR20150059527 A KR 20150059527A KR 101706988 B1 KR101706988 B1 KR 101706988B1
- Authority
- KR
- South Korea
- Prior art keywords
- head
- eject pin
- jig
- eject
- seating
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/061—Work-clamping means adapted for holding a plurality of workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for manufacturing an eject pin of a metal mold for manufacturing an eject pin used in a metal mold for molding a precision and small product and more particularly to a jig for manufacturing an eject pin, In machining the head portion of the fin, a large number of eject pins can be fixed to the jig to facilitate easy and stable machining at the same time, thereby improving productivity and precision.
This is a jig which is used for a mold and has a long rod-shaped slide bar and a jig which is integrally formed at one end of the slide rod and fixes an eject pin having a large diameter and a short length for processing, A plurality of semicircular seating grooves 111 are formed on the upper surface of the eject pin 10 in such a manner that the slide pins 11 of the eject pin 10 can be seated thereon. A seating member 110 on which a head seating groove 112 is formed; And a pressing pad 130 for pressing the eject pin 10 that is seated on the seating member 110 is integrally mounted on the bottom surface of the fixing member 110. The pressing member 130 is attached to the bottom surface of the fixing member 110 by a bolt 140, And a head cutting jig (100) composed of a head cutter (120) for cutting the head of the eject pin according to its length.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for manufacturing an eject pin of a metal mold for manufacturing an eject pin used in a metal mold for molding a precision and small product and more particularly to a jig for manufacturing an eject pin, In machining the head portion of the fin, a large number of eject pins can be fixed to the jig to facilitate easy and stable machining at the same time, thereby improving productivity and precision.
In general, in a die for injection molding various synthetic resin products or a die casting die for casting aluminum products, a component called an eject pin is inevitably used for demolding an injection molded product from a mold.
A plurality of eject pins are installed and used depending on the structure and the shape of the mold and are required to be made of a steel material made of a special steel having a very strong strength because a number of operations are repeated in order to demold the product to be molded in the mold have.
The ejection pin is composed of a circular rod so that the slide operation can be smoothly performed even though it is made of special steel such as stainless steel having excellent strength. In other words, the eject pin has a long circular rod slide bar, And has a structure in which the diameter of the one end is larger than that of the slide bar and the length of the head is integrally provided.
Accordingly, since the ejection pin as described above requires very precise operation due to its functional characteristics, it is difficult and difficult to manufacture the ejection pin. Moreover, the ejection pin used in the mold for molding relatively small products is very small in size And there was a difficulty in manufacturing.
Since the size of the eject pin is relatively small and precise, it is largely dependent on manual operation. When the rod-shaped material is fixed to the vise, the dimension of the head portion is accurately displayed Followed by cutting the surface as well as the length of the head by using a tool such as a grinder or a hand grinder.
However, the manufacturing process of such a common eject pin uses some tools such as a vise, but due to its structural characteristics, most of the work is done manually by a skilled artisan, so the workability is significantly lowered, resulting in poor productivity and a large defect rate .
Since the precision machining can not be performed by manual cutting, it is necessary to reassemble the ejected fin by a grinder after assembling the ejected fin to the mold, and there is a problem such that the die mold surface is cut off .
Accordingly, a manufacturing method of the eject pin has been proposed in order to solve such a problem, and this is an eject pin cutting apparatus for molds of Utility Model Publication No. 1990-0008410.
This is to provide an eject pin guide support portion between the abrasive tool operated by the electric motor and the dimension adjusting tool using the principle of barier caliper on the die of the jig so that the eject pin can be processed quickly and precisely. The ejection pin is pushed forward to fix the ejection pin on the axis line between the grinder and the fixing plate in a state in which the ejection pin is interposed in the guide groove between the pair of holders in the missing state, After finely setting, the cutting is performed with the accuracy of calculating the Bourneial caliper type scale.
However, although the above-mentioned design has been based on manual work only, a mechanized cutting device is used. However, due to the structural characteristics of the eject pin, there are still many parts that depend on manual work. Further, work for fixing the eject pin is very difficult However, this method is one in which cutting is performed after setting one by one, so that the workability and precision are still deteriorated.
Another conventional method of manufacturing the eject pin is disclosed in Korean Patent Registration No. 10-0845123.
The present invention relates to an eject pin used for demolding in a mold for taking out an injection or cast product from an injection mold, a die casting mold, etc., and a method of manufacturing the same, wherein the slide bar and the head of the eject pin are made of steel wires of different diameters And then the slide bar and the head are separated and assembled to each other. Thus, the manufacturing cost can be reduced.
That is, the head is assembled to a single-layer end portion at one end of the slide rod so as to have a diameter smaller than that of the slide portion and having diamond grooves crossing the entire outer surface in a single layered state, The inner surface of the assembled hole is tightly adhered to the outer surface of the end of the single layer by the forging process, and at the same time, is inserted into the diamond grooves intersecting with each other.
However, since the above-described line registration method is a system in which slidable rods and heads are respectively manufactured and assembled integrally, the efficiency of manufacturing can be expected. However, since the strength is weak, there is a possibility that the slide rods and the heads may be separated And there is a limit in manufacturing an eject pin having a very small size.
On the other hand, molds for manufacturing very precise and small-sized components used in semiconductors or very precise and small-sized products applied to various industrial fields are widely used recently.
For example, the ejection pins have a diameter of less than 1φ (0.5, 0.6, 0.7) and a diameter of the head of 2φ or less 1.6, 1.8). Another type of eject pin is required to have a diameter of the slide bar of 1? Or less (0.5, 0.6, 0.7), a head of 3 to 5Φ and a height of 2 to 4t. Since it is small and precise, there is a considerable difficulty in manufacturing.
Particularly, as described above, the size of the ejection pin or the slide bar of the very small size of the slide bar and the head is small, while the thickness of the head is relatively thick and the length is short. As such, there is a limit to automating using mechanical devices.
Therefore, in order to manufacture a small and precise eject pin, it is only necessary to manufacture the ejection pin depending on the manual operation of the skilled artisan, thereby causing a problem such that the productivity is lowered or the precision is lowered.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is an object of the present invention to provide a mold for manufacturing an eject pin of a mold which requires very small size and accuracy, And a jig for manufacturing a pin.
It is another object of the present invention to provide an ejection pin of various types such as an eject pin having a relatively small thickness and a relatively large thickness of a slide bar, So that the productivity can be improved by providing the jig for manufacturing an eject pin of a mold.
Particularly, the present invention provides a method for manufacturing a large number of eject pins at the same time, which can easily process a non-slip surface formed on a head, and a mold for easily processing an eject pin of a very small size, And a jig for manufacturing an eject pin.
According to an aspect of the present invention, there is provided a jig for manufacturing an eject pin having an improved ejection pin structure, And a non-slip surface cutting jig for cutting a non-slip surface to prevent slippage in the head portion of the eject pin processed in the head cutting jig.
A head cutting jig according to the present invention includes: a seating member in which a plurality of eject pins are seated in a row in a row; a fixing member fixedly coupled to the seating member by a bolt to firmly press the eject pin, And a pressing pad which is fixedly attached to one surface of the fixing member and fixes the ejection pin seated on the seating member firmly without any flow, thereby fixing a large number of ejection pins at a time to easily cut the head portion into an appropriate length .
The non-slip surface cutting jig also includes a seating member for seating a plurality of eject pins in a row, a fixing member fixedly coupled to the seating member by a bolt to securely fix the eject pin seated on the seating member, And a plurality of ejection pins are firmly fixed to each other, so that the non-slip surfaces can be cut at a time.
The present invention relates to a head cutting jig for cutting a head portion of an eject pin processed in a previous step to an appropriate length and a non-slip surface cutting jig for cutting a non-slip surface on the surface of the head, So that the head portions of a large number of the eject pins can be simultaneously processed at the same time and the productivity can be improved.
That is, according to the present invention, in the case of cutting a length of a head portion to an appropriate length in machining an eject pin, it is processed by using a head cutting jig, and a slip prevention surface is cut It is possible to simultaneously process the head cutting process of the eject pin at a large number of times by using the non-slip surface cutting jig, thereby remarkably improving the productivity.
Further, the present invention is advantageous in that an eject pin having a very small size or various shapes can be easily fixed, so that an eject pin having a very small size or various shapes can be easily processed all at once will be.
1 is a schematic view showing a manufacturing process of an eject pin required in the present invention;
Fig. 2 is a diagram showing the configuration of another type of ejection pin required in the present invention
3 is an exploded perspective view of the head cutting jig according to the present invention.
Fig. 4 is a side cross-sectional view
Fig. 5 shows the operating state diagram of Fig. 4
6 is an enlarged view of a part of the present invention Fig. 3
7 is a partial plan view of the seating member of the present invention
Figure 8 is a partial front view of the present invention Figure 3
FIG. 9 is a partially enlarged view of FIG. 8
Figure 10 shows the operating state diagram of Figure 9
11 is an exploded perspective view showing another embodiment of the present invention.
12 is a partially enlarged view of the present invention Fig. 11
Fig. 13 is a cross-sectional view of the operating state of Fig. 11
14 is an exploded perspective view showing the non-slip surface cutting jig of the present invention
Fig. 15 is a schematic sectional configuration diagram of Fig. 14
16 is a partially enlarged view of the present invention Fig. 15
Figure 17 is a partial plan view showing the seating member in Figure 14 of the present invention.
18 shows the state in which the eject pin is seated in Fig. 17 according to the present invention
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
FIGS. 3 to 10 show the structure of a head cutting jig for cutting a head of an eject pin. FIGS. 11 to 13 show another embodiment Fig. 14 shows a non-slip surface cutting jig for cutting the non-slip surface on the head of the eject pin.
In the figure,
The
The seating
The
In this case, the
The fixing
The
Accordingly, the
When a
In this state, the
11 to 13 of the accompanying drawings show another embodiment of the present invention.
In this embodiment, as shown in the accompanying drawings, by dividing the seating member in the
In this embodiment, the seating member of the
The
At this time, the
Particularly, in the embodiment of the present invention, since the
On the other hand, the eject pins 10 to be machined as described above are cut at least one or more
The non-slip
The seating member 210 has a rectangular body and a plurality of the
The mounting
Since the
In this case, the
The fixing
The
The non-slip
When the fixing
In this state, the non-slip
In other words, not only the plurality of eject pins 10 fixed to the non-slip
In the case where the
As another embodiment of the present invention, the same effect can be expected even if the seating groove of the seating member in which the eject pin is inserted is formed as a triangular groove instead of a semicircular shape. In this case, So that the clamping force can be doubled.
10: eject pin 11: slide rod
12:
100:
111, 211: seating
120, 220: fixing member 130: compression pad
140: Bolt 150: Slide rod seating member
151: slide bar seating groove 152: fastening surface
160: head seating member 200: non-slip surface cutting jig
Claims (5)
A slide rod seating member 150 having a rectangular body and having a plurality of semicircular slide rod seating grooves 151 formed at equal intervals so that only the slide rods 11 can be inserted and seated;
A plurality of semicircular head seating grooves 161 are formed in the front end of the slide bar seating member 150 so as to be detachable by a bolt 140 and the head 12 of the eject pin 10 is inserted into the groove. A head seating member 160 to be formed;
And a fixing member 120 detachably mounted on the front surface of the slide bar seating member 150 and integrally attached with a pressing pad 130 for pressing and fixing the eject pin 10, Wherein the jig for manufacturing an eject pin of a mold is characterized in that the jig for manufacturing an eject pin of a mold is characterized in that the jig can be cut to meet the length.
Wherein the slide bar seating groove (151) of the slide bar seating member (150) is formed as a triangular groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150059527A KR101706988B1 (en) | 2015-04-28 | 2015-04-28 | Eject pin jigs for manufacture of molds |
Applications Claiming Priority (1)
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KR1020150059527A KR101706988B1 (en) | 2015-04-28 | 2015-04-28 | Eject pin jigs for manufacture of molds |
Publications (2)
Publication Number | Publication Date |
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KR20160127955A KR20160127955A (en) | 2016-11-07 |
KR101706988B1 true KR101706988B1 (en) | 2017-02-15 |
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KR1020150059527A KR101706988B1 (en) | 2015-04-28 | 2015-04-28 | Eject pin jigs for manufacture of molds |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190108430A (en) | 2018-03-14 | 2019-09-24 | 재영솔루텍 주식회사 | Apparatus for fabricating eject pin automatically |
KR102253325B1 (en) | 2020-03-03 | 2021-05-18 | 김옥현 | Jig for supporting head of eject pin, apparatus for fabricating eject pin with the same, and method for fabricating eject pin using the apparatus for fabricating eject pin |
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CN107297447B (en) * | 2017-07-04 | 2023-12-22 | 惠州市其正科技有限公司 | Jig for thimble cutting |
KR102405550B1 (en) * | 2020-11-25 | 2022-06-03 | 이수영 | jig for machining diamond shape pins for positioning |
CN112975786A (en) * | 2021-03-01 | 2021-06-18 | 辽宁优迅科技有限公司 | Box laser external lens mounting and fixing device and mounting method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004291188A (en) * | 2003-03-27 | 2004-10-21 | Nisshin Kasei:Kk | Polishing tool, end face polishing device, and set jig for polishing tool |
-
2015
- 2015-04-28 KR KR1020150059527A patent/KR101706988B1/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004291188A (en) * | 2003-03-27 | 2004-10-21 | Nisshin Kasei:Kk | Polishing tool, end face polishing device, and set jig for polishing tool |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190108430A (en) | 2018-03-14 | 2019-09-24 | 재영솔루텍 주식회사 | Apparatus for fabricating eject pin automatically |
KR102253325B1 (en) | 2020-03-03 | 2021-05-18 | 김옥현 | Jig for supporting head of eject pin, apparatus for fabricating eject pin with the same, and method for fabricating eject pin using the apparatus for fabricating eject pin |
Also Published As
Publication number | Publication date |
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KR20160127955A (en) | 2016-11-07 |
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