KR101594801B1 - No weld in mold - Google Patents
No weld in mold Download PDFInfo
- Publication number
- KR101594801B1 KR101594801B1 KR1020150048303A KR20150048303A KR101594801B1 KR 101594801 B1 KR101594801 B1 KR 101594801B1 KR 1020150048303 A KR1020150048303 A KR 1020150048303A KR 20150048303 A KR20150048303 A KR 20150048303A KR 101594801 B1 KR101594801 B1 KR 101594801B1
- Authority
- KR
- South Korea
- Prior art keywords
- mold
- hole
- cavity
- air cylinder
- product
- Prior art date
Links
- 238000001746 injection moulding Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 238000000465 moulding Methods 0.000 claims abstract description 22
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 238000005520 cutting process Methods 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 5
- 239000012768 molten material Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2803—Closure devices therefor comprising a member with an opening or the injection nozzle movable into or out of alignment with the sprue channel or mould gate
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/7613—Measuring, controlling or regulating the termination of flow of material into the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention relates to a molding die and method for a product without a weld line, and more particularly, to a molding process for filling a hole-free state in order to eliminate the occurrence of a weld line during injection molding, Mold and method.
The mold for a product without a weld line according to the present invention is characterized in that the air cylinder rod 1110 is operated in one direction by the air supplied to the one-way valve and the air cylinder rod 1110 is operated by the air supplied to the other- The air cylinders 1100 are provided so as to be rotatable in one direction with respect to the hinge point S by one-directional operation of the air cylinder rod, and operate in the other direction of the air cylinder rod And the upper and lower plates 2100 and 2200 provided at the other end of the seesaw bar and fixed to the upper and lower plates 2100 and 2200 in the mold 2000 Before the cavity C formed by the cavity cores 2110 and 2210 is solidified, the seesaw bar is rotated in one direction so as to rotate around the hinge point, and at the position where holes of the cavities provided in the mold are formed, The hole of the product by blocking by the resin which comprises a sleeve cutter hole unit 1300 is formed in the mold.
Description
The present invention relates to a molding die and method for a product without a weld line, and more particularly, to a mold for molding a product without a weld line in order to eliminate the occurrence of a weld line during the injection molding process, The present invention relates to a molding die of a product and a method thereof.
Generally, the production of a conventional hole-formed article requires that the flow of the molten material is diverted by the core because the molten material is injected into the mold with the core for making the hole fixed in the cavity, The molten material solidifies and the molten material on the side of the mold wall is bonded in a hardened state, so that there is a problem in that a long line-shaped weld line is formed along the flow direction in an apparent manner in which complete bonding is not achieved.
Such a weld line is vulnerable to an external impact and is accompanied by drawbacks that the strength is significantly lower than other portions. In order to solve each of these problems, conventionally, in order to hide the weld line, which is a visible defect on the surface of a molded product, a thin color is painted on the surface of the weld line and the gate position is changed to induce the weld line Although the strength of the weld line portion was reinforced to partially improve the strength, a process for painting a molded product was added, and a modification of the gate and the thickness of the molded product were not only a general method but a partial method. There is a difficulty in producing a required molded article.
In order to solve the above problems, the Korean Intellectual Property Office (KIPO) No. 10-1048625 discloses an injection molding die, in which a core is formed between a fixed side mold and a movable side mold to form a through hole in an injection molding In a plastic injection-molded metal mold, upper and lower core fins provided with a lifting means are respectively provided in a stationary-side mold and a movable-side mold at positions where through-holes are formed, and between the upper and lower core pins, resin So that the bottom surface of the through-hole can be formed. After the resin injected into the cavity is solidified, the bottom surface of the through-hole is cut by the rising of the lower core pin to form a through-hole Lt; / RTI >
In the injection molding die provided with such a weldless process, a gate, which is a resin injection port, is connected to one side of a cavity formed between the fixed side mold and the movable side mold. When a proper amount of fusion resin is injected through the gate, The resin is injected while flowing through the both side surfaces of the lower core pin and the upper side of the lower core pin to fill the inside of the cavity without separating the flow of the resin.
Therefore, since the resin injected by the core passing through the upper and the lower part of the cavity is separated to both sides of the core, the phenomenon that the leading end of the resin is united in a hardened state does not occur on the rear surface of the core. Generation is suppressed.
The lower core pin forming the through hole of the injection molded article is located at a lower portion of the through hole forming the through hole of the injection molding in the cavity and spaced apart from the upper face of the cavity by a predetermined distance to form the bottom face of the through hole, The upper core pin is located on the upper side where the core pin is located, that is, on the lower side of the floor, so that leakage of the resin injected into the cavity is prevented while the lower core pin rises together with the rising of the lower core pin.
The thickness of the bottom surface formed between the lower core pin and the upper wall of the cavity is preferably made to be a thickness considering the fluidity such that the weld line does not occur and is made possible with a minimum force during cutting by the pressing operation of the bottom surface Do.
When the bottom surface of the through-hole is cut by the pressing operation by the lower core pin after the resin injected into the cavity is hardened, the stationary-side mold and the movable-side mold are separated from each other to be opened and the molded article solidified in the cavity is taken out When the injection molding is taken out, scrap on the bottom surface cut in the through-hole by the lower core pin is also discharged.
However, in the product manufactured by the injection molding, the bottom surface is cut and the surface of the product is irregularly protruded so that the worker has to manually finish the irregular surface, and the commerciality due to the irregular surface is lowered. There is a problem that the productivity is deteriorated due to a large amount of defects in the product due to cracks in the area.
References: Korean Patent No. 10-1048625 entitled "Injection molding die"
SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of filling a hole without holes in order to eliminate generation of a weld line during injection molding, And it is an object of the present invention to provide a mold and a method for molding a product without a weld line for forming a hole by cutting off a sleeve cutter.
The length of the seesaw bar for operating the hole sleeve cutter is longer than the length of the seesaw bar connected to the air cylinder rod at the hinge point and connected to the hole sleeve cutter so that even if the capacity of the air cylinder is small, And it is an object of the present invention to provide a molding die and method for a product without a weld line.
The present invention is characterized in that the hole sleeve cutter is provided with a sloped surface at a point where the flat surface of the hole sleeve is perpendicular to the axial direction and a flat surface at the end of the flat surface so that the life of the hole sleeve cutter is prolonged, And to provide a mold and a method for molding a product without weld line.
The present invention is characterized in that the upper cavity core surface or the lower cavity core surface on the side where the hole sleeve cutter is not provided is protruded toward the hole sleeve cutter, The present invention has been made in view of the above problems.
In order to accomplish the above object, according to the present invention, there is provided a molding die for a product without a weld line, in which an air cylinder rod is operated in one direction by air supplied to a unidirectional valve, Each of the air cylinders being provided so that the air cylinder rod is operated in the other direction and the other end of the air cylinder rod being rotatable in one direction with respect to the hinge point by the unidirectional operation of the air cylinder rod, A seesaw bar provided inside the mold so as to rotate in the other direction, and a seesaw bar is rotated and pressed in one direction before the cavity formed by the upper and lower cavity cores fixed to the upper and lower plates in the mold is solidified, The resin supplied to the position where the hole of the cavity provided in the mold is formed Removing the sleeve comprises parts of the hole cutter to form the hole in the block by the product in the mold.
Wherein the seesaw bar is longer than a length of the seesaw connected to the air cylinder rod at a hinge point and connected to the hole sleeve cutter at a hinge point.
The hinge point is formed by a hinge block formed in the mold by forming a hinge hole so that the
The hole sleeve cutter unit may include a hole sleeve cutter fixing block fixed to the other end of the seesaw bar, and a hole sleeve cutter fixing block which is inserted into the hole sleeve cutter fixing block and presses and cuts a hole forming part of the cavity before the cavity is solidified, A hole sleeve cutter configured to move backward by rotating the seesaw bar in the other direction, and a hole sleeve cutter which is fitted in the axial center direction of the hole sleeve cutter and which is provided on a plate of the mold to operate the ejection rod of the injection molding machine And a sleeve pin which is moved forward and backward by the hollow sleeve portion to discharge the scrap formed in the cavity.
Meanwhile, the hole sleeve cutter is characterized in that an end portion of the inner hole protruding from the sleeve fin is formed with an inclined surface of 40 to 50 degrees, the diameter of which becomes larger toward the tip from the inner diameter.
In addition, the hole sleeve cutter is characterized in that a flat surface in a state in which the sleeve pin is perpendicular to the axial direction is provided at an end portion of the sleeve pin protruding.
And a stopper installed to control the angle of rotation of the seesaw bar in a mold to which the seesaver is connected.
And a cut hidden protrusion protruding toward the hole sleeve cutter on a side of the upper cavity core or the lower cavity core on the side where the hole sleeve cutter is not provided and the cut hidden protrusion corresponding to the shape of the hole rib cutter and formed in a larger size .
The method for molding a product without a weld line according to the present invention includes the steps of: starting filling of a cavity with a resin through a runner and a gate of a mold by an injection signal after the mold is formed in an injection molding machine; Supplying a signal to the sequence time controller connected to the periphery of the injection molding machine; supplying air to the sequence time controller through a one-way valve of a solenoid valve unit installed in a mold or around a mold; The air cylinder rod of each of the air cylinders installed in the mold is operated in one direction by the air supplied to the one-way valve of the solenoid valve unit, and a seesaw bar rotatably installed by the operation of the air cylinder rod is operated And is rotated on the basis of the hinge point, and at the other end of the seesaw bar A step of forming a hole in the mold by blocking the resin supplied to the position of the hole by pressurizing the cavity before the cavity provided in the molten hole sleeve cutter portion is solidified; A step of cooling the product after applying a holding pressure to the product, a step of opening the mold by opening the mold of the movable part in the injection molding machine to open the mold, and a step of operating the ejection rod in the injection molding machine, A step of discharging the hole scrap and the product by using an installed sleeve pin and an eject pin; operating the air cylinder rod in the other direction by the air supplied to the other directional valve of the solenoid valve unit; So that the seesaw bar rotates with respect to the hinge point, And a step of causing the sub cutter portion to come out to the rear and to be in a standby state.
Here, in the step of supplying air from the sequence time controller to the one-way valve of the solenoid valve unit, a signal for supplying air to the one-way valve of the solenoid valve unit in the sequence time controller after a predetermined time has elapsed according to the product shape and size of the cavity .
As described above, according to the molding die and method of a product without a weld line according to the present invention, in order to eliminate generation of a weld line during injection molding, filling is performed in a state without a hole, The holes are formed by cutting off the supplied resin by removing the hole sleeve cutter, thereby forming a product without a weld line.
According to the molding die and method of a product without a weld line according to the present invention, the seesaw bar for operating the hole sleeve cutter is longer than the length connected to the air cylinder rod at the hinge point and longer than the length connected to the hole sleeve cutter at the hinge point, It is easy to form a hole even if the capacity of the capacitor is small.
According to the molding die and method of the present invention, the hole sleeve cutter is provided with a sloped surface at a point where the flat surface and the flat surface end in a direction perpendicular to the axial direction at the front end and the lifetime of the hole sleeve cutter It is possible to cut the resin before solidification, as well as to be long.
According to the molding die and method of a product without a weld line according to the present invention, the mold is protruded toward the hole sleeve cutter on the side of the upper cavity core or the lower cavity core on which the hole sleeve cutter is not provided, And the outer surface of the product is improved by the cutting hidden protrusion which is formed to be larger.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of an assembly state for explaining a molding die of a product without a weld line according to an embodiment of the present invention,
FIG. 2 is an explanatory view showing the main part of FIG. 1,
3 is an explanatory view showing a hole sleeve cutter of the present invention,
4 is an explanatory view showing a state in which a cavity and an upper core are formed in a state where the hole sleeve cutter and the hole sleeve of the present invention are mounted on the lower core;
5 is a perspective view of a product molded by a molding die of a product without a weld line of the present invention,
6 is a block diagram showing a method of forming a product without a weld line according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a molding die and method of a product without a weld line according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
In the drawings, the same reference numerals are given to the same elements even when they are shown in different drawings. In the drawings, the same reference numerals as used in the accompanying drawings are used to designate the same or similar elements. And detailed description of the configuration will be omitted. Also, directional terms such as "top", "bottom", "front", "back", "front", "forward", "rear", etc. are used in connection with the orientation of the disclosed drawing (s). Since the elements of the embodiments of the present invention can be positioned in various orientations, the directional terminology is used for illustrative purposes, not limitation.
Further, in the present invention, a general process of mounting a mold to an injection molding machine and performing injection molding and a structure of a mold will not be described in detail.
As shown in Figs. 1 and 2, the molding die 2000 of a product without a weld line according to an embodiment of the present invention operates the
Therefore, when the
The length of the
In this embodiment, the length of the
Therefore, even if the
The hinge point S includes a
When the
1 to 4, the hole
Accordingly, when the
The
Therefore, when the
The
Therefore, the leading end of the
Meanwhile,
That is, the
The
On the other hand, the protrusion is protruded toward the
Therefore, since the cut line of the
When the
Therefore, in the present invention, the process of forming the holes in the cavity automatically cuts the holes in the molds without any additional time, so that the productivity is improved. In addition, The mold structure can be established and the standardization of the cutting die in the mold can be established.
Hereinafter, as shown in FIGS. 1 to 6, a method of molding a product without a weld line according to the present invention will be described with reference to FIGS. 1 to 6, wherein a mold 2000 is formed in an injection molding machine 100, (S2) of starting a filling of the cavity (C) through the cavity (C) through the cavity (C) and sending a signal that the injection is started in the injection molding machine to a sequence time controller (200) connected to the periphery of the injection molding machine (S3) of supplying air to the mold through a one-way valve of a solenoid valve unit (300) installed in a mold at a time controller or around a mold, and a step A step S4 of operating the air cylinder rod 1110 of each air cylinder 1100 in one direction and a seesaw 1200 installed rotatably by the operation of the air cylinder rod The hole sleeve cutter portion 1300 provided at the other end of the seesaw bar rotates with respect to the hinge point S by the operation of the cylinder rod and presses it before the cavity C provided in the mold is solidified, (S5) forming a hole (H) in the mold by cutting off the resin to be supplied, applying a holding pressure to the product of the cavity in the injection molding machine after the step of forming the hole (S6) A step S8 of cooling the product after applying the holding pressure to the molds, a step S8 of opening the mold by opening the mold of the movable part in the injection molding machine in the injection molding machine, and operating the ejection rod in the injection molding machine, (S9) of discharging the hole scrap and the product with the sleeve pin (2500) and the eject pin (2501) installed in the solenoid valve unit (2420), and the air cylinder rod is moved in the other direction Operating stage (10), and the seesaw bar (1200) is rotated with respect to the hinge point (S) by operating in the other direction of the air cylinder rod, and the hole sleeves cutter portion (1300) provided at the other end of the seesaw bar (Step S11).
Therefore, the
At this time, in the present invention, the
Here, in the step of supplying air to the one-way valve of the
Accordingly, the
The
The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention if they are apparent to those skilled in the art.
C: cavity H: hole
S: Hinge point 100: Injection molding machine
200: Sequence time controller 300: Solenoid valve unit
1100: air cylinder 1110: air cylinder rod
1200: Seesaw bar 1210: Seesaw bar hinge hole
1300: hole sleeve cutter part 1310: hole sleeve cutter fixing block
1320: Hole sleeve cutter 1321: Inner hole
1322: sloped surface 1323: flat surface
1330: Sleeve pin 1340: Cutting hidden projection
2000: mold 2100: top plate
2110: upper cavity core 2200: bottom plate
2210: Lower cavity core 2300: Hinge block
2310: Hinge holes 2410, 2420:
2700:
3000: Products
Claims (10)
A sipe installed inside the mold 2000 so as to be pivotable in one direction with respect to the hinge point S by one-directional operation of the air cylinder rod and to rotate in the other direction by operating in the other direction of the air cylinder rod Bar 1200,
The seesaw bars are rotated and pressed in one direction before the cavities C formed by the upper and lower cavity cores 2110 and 2210 fixed to the upper and lower plates 2100 and 2200 in the mold 2000 are solidified, And a hole sleeve cutter 1300 for forming a hole of the product in the mold by removing the resin supplied to a position where the hole of the cavity is formed while rotating with respect to the hinge point, Molding mold of the product without.
The seesaver 1200 includes:
Wherein a length of the hinge point connected to the air cylinder rod is longer than a length of the hinge point connected to the hole sleeve cutter part (1300).
The hinge point (S)
A hinge block 2300 formed inside the mold by forming a hinge hole 2310 so that the seesick bar 1200 is inserted and rotatably installed,
Wherein the seesaw bar is rotatable by a hinge pin formed in a hinge block and a hinge pin (2700) fitted in a seesaw bar hinge hole (1210) formed in a seesaw bar.
The hole sleeve cutter unit 1300 includes:
A hole sleeve cutter fixing block 1310 fixed to the other end of the seesaw bar,
A hole is formed in the cavity in the mold by pressing and blocking the hole forming portion of the cavity before the cavity is solidified by being fitted in the hole sleeve cutter fixing block and the hole sleeve configured to move backward by rotating the seesaver in the other direction A cutter 1320,
And is disposed on the mold plates 2410 and 2420 of the mold sleeve and is moved forward and backward by the operation of the ejection rod of the injection molding machine to discharge the scraps formed in the cavities by the Hollis- And a sleeve pin (1330).
The hole sleeve cutter 1320 includes:
Wherein an inclined surface (1322) is formed at an angle of 40 to 50 degrees at an end of the inner hole (1321) where the sleeve pin (1330) protrudes from the inner diameter to the tip.
The hole sleeve cutter 1320 includes:
And a flat surface (1323) perpendicular to the axial direction is provided at an end of the sleeve pin (1330) protruding from the sleeve pin (1330).
And a stopper (2810, 2820) installed to control the angle of rotation of the seesaw bar in the interior of the mold to which the seesaver is connected.
And protrudes toward the hole sleeve cutter 1320 on the side of the upper cavity core 2110 or the lower cavity core 2210 on which the hole sleeve cutter 1300 is not provided, Further comprising a cutting hidden protrusion (1340) formed in the mold.
A step (S2) of sending a signal indicating that the injection is started in the injection molding machine to the sequence time controller 200 connected to the periphery of the injection molding machine,
A step (S3) of supplying air to the solenoid valve unit (300) installed in the mold in the sequence time controller or around the mold,
A step S4 of operating the air cylinder rod 1110 of each of the air cylinders 1100 provided in the mold by the air supplied to the one-way valve of the solenoid valve unit in one direction,
The seesaw bar 1200 rotatably installed by the operation of the air cylinder rod is rotated by the air cylinder rod to rotate about the hinge point S and the hole sleeve cutter 1300 provided at the other end of the seesaw bar is rotated, (S5) of forming a hole (H) in a mold by pressing the resin before the cavity (C) provided in the mold is solidified to block the resin supplied to the hole,
A step (S6) of applying a holding pressure to the product of the cavity in the injection molding machine after the step of forming the hole,
A step (S7) of cooling the product after applying the holding pressure to the product (3000)
A step (S8) of opening the mold by spreading the template of the movable part in the injection molding machine at the fixing part,
A step (S9) of operating the ejection rod in the injection molding machine to discharge the hole scrap and the product with the sleeve pin (2500) and the eject pin (2501) provided on the plate (2410, 2420)
A step S10 of operating the air cylinder rod in the other direction by air supplied to the other directional valve of the solenoid valve unit,
By operating in the other direction of the air cylinder rod, the seesaw bar 1200 rotates with respect to the hinge point S, and the Holsley sub-cutter portion 1300 provided at the other end of the seesaw bar is withdrawn rearward (S11). ≪ RTI ID = 0.0 > 11. < / RTI >
In the step of supplying air to the one-way valve of the solenoid valve unit (300) in the sequence time controller (200), after a predetermined time has elapsed according to the product shape and size of the cavity, the sequence time controller And a signal for supplying the weld line-free product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150048303A KR101594801B1 (en) | 2015-04-06 | 2015-04-06 | No weld in mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150048303A KR101594801B1 (en) | 2015-04-06 | 2015-04-06 | No weld in mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR101594801B1 true KR101594801B1 (en) | 2016-02-18 |
Family
ID=55458062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150048303A KR101594801B1 (en) | 2015-04-06 | 2015-04-06 | No weld in mold |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101594801B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200089804A (en) * | 2019-01-18 | 2020-07-28 | 윤봉남 | method of manufacturing Cover plate for electrical apparatus and Cover plate for electrical apparatus manufactured thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930003660Y1 (en) * | 1990-11-27 | 1993-06-21 | 현대전자산업 주식회사 | Gate for injection molding articles |
| JPH0560822U (en) * | 1992-01-31 | 1993-08-10 | エヌオーケー株式会社 | Injection mold |
| JP2007283497A (en) * | 2006-04-12 | 2007-11-01 | Kanto Itami Denki Kk | Mold, method for molding resin product, and resin product |
| KR101456999B1 (en) * | 2014-07-22 | 2014-11-04 | 경성정밀주식회사 | Controlling method of injection molding which having groove in surface without weldline |
-
2015
- 2015-04-06 KR KR1020150048303A patent/KR101594801B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930003660Y1 (en) * | 1990-11-27 | 1993-06-21 | 현대전자산업 주식회사 | Gate for injection molding articles |
| JPH0560822U (en) * | 1992-01-31 | 1993-08-10 | エヌオーケー株式会社 | Injection mold |
| JP2007283497A (en) * | 2006-04-12 | 2007-11-01 | Kanto Itami Denki Kk | Mold, method for molding resin product, and resin product |
| KR101456999B1 (en) * | 2014-07-22 | 2014-11-04 | 경성정밀주식회사 | Controlling method of injection molding which having groove in surface without weldline |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200089804A (en) * | 2019-01-18 | 2020-07-28 | 윤봉남 | method of manufacturing Cover plate for electrical apparatus and Cover plate for electrical apparatus manufactured thereof |
| KR102147643B1 (en) | 2019-01-18 | 2020-08-25 | 윤봉남 | method of manufacturing Cover plate for electrical apparatus and Cover plate for electrical apparatus manufactured thereof |
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