KR20020085523A - Method for manufacturing of panel film insert molding, injection mold for manufacturing of panel - Google Patents

Abstract

PURPOSE: A method for manufacturing a panel by inserting a film and a die for manufacturing the panel are provided to simplify the structure of a die, to cut down the cost of manufacturing, and to reduce the capacity of an injector for molding by forming a panel without turning over the panel. CONSTITUTION: A panel(W) charged in a cavity(Q) moves while closely adhering to the lower core of a lower die(200) retreating with a lower template. An eject panel(220) interlocking with the operation of an eject bar placed behind the lower template and many angular eject pins(240) fixed on an eject pin fixing plate(230) push each runner core toward an upper template. The runner core horizontally moves on the end portion of the angular eject pin and a pair of runner cores push out a runner(R) by gradually widening in a specific angle. If the force of the eject bar is removed from the eject panel and the eject pin fixing plate, the eject pin fixing plate and the angular eject pin move toward a lower fixing plate fixed on the lower template and each angular eject pin pulls each runner core toward a lower panel.

Description

Method for manufacturing a panel for inserting and molding a film and a mold used for manufacturing the same {Method for manufacturing of panel film insert molding, injection mold for manufacturing of panel}

The present invention relates to a method for manufacturing a panel for inserting and molding a film, and to a mold used for the production of the panel, and in particular, to allow the mold of the panel for inserting and molding the film to mold the panel without inverting the state of the product. The present invention relates to a method for manufacturing a panel for inserting and molding a film which is made possible by a simple structure of a mold and a low mold making cost and a small capacity of an injection machine for molding, and a mold used in the manufacture thereof.

In general, a front panel of an industrial electrical or electronic device such as an electric or electronic product such as a washing machine, a kimchi refrigerator, or a business is provided with a panel made of plastic resin to display the operation state of the devices as well as to control the operation thereof.

The panel is provided with a display unit such as a liquid crystal display or a lamp and a plurality of buttons for controlling the operation of the electrical or electronic device to display the operating state of the electrical or electronic device.

The conventional molding method of such a panel is manufactured by a rear injection method in which a state of a product is reversed and seated on a mold as shown in FIG. 19.

That is, the panel 11 is provided with a screw bush 13 in which resin is supplied by being in close contact with the nozzle of the injection machine (not shown) in the lower mold 10 in which the eject plate 11 and the eject pin fixing plate 12 are provided with a plurality of eject pins. When the lower mold 10 and the upper mold 20 are separated from the parting line PL, the lower mold 14 is installed to communicate with the lower core 14 on which the pinpoint gate G is formed so as to be seated upside down. A stripper pin (not shown) is installed on the upper plate 22 on which the upper core 21 is installed to operate the eject plate 11 and the eject pin fixing plate 12 to expel the panel W.

Meanwhile, reference numeral 15 is a lower plate on which the lower core 14 is installed, 16 is a lower fixing plate fixed to the upper plate of the injection molding machine, and 17 is a leg block for setting the moving distance of the eject pin.

23 is an upper fixing plate fixed to the lower template of the injection molding machine.

Therefore, the film (F) is supplied to the parting line (PL) and at the same time the lower mold of the injection machine is advanced, the upper core 21 and the lower core 14 planted in the upper plate 22 and the lower plate 15 are in close contact with each other. After the resin is injected from the nozzle of the injection molding machine, the resin is filled into the cavity space formed by the upper core 21 and the lower core 14 through the screw bush 13 and the pin point gate G. This is to be molded.

When the coolant is cooled in the filled state for a predetermined time, the upper mold 20 is separated from the parting line PL, and is separated from the lower mold 10, and at the same time, the stripper pin is separated from the eject plate 11. By pulling the eject pin fixing plate 12, the lower core 14 and the screw bush 13 are filled in to eject the cooled injection.

After the above process is repeated, the film is obtained with a plurality of insert-inserted panels in front.

However, the resin supplied through the screw bush 13 has a lower core (P) having a pinpoint gate G formed through the fixing plate 16, the eject plate 11, the eject pin fixing plate 12, and the lower plate 15. 14), the size of the mold is increased, that is, the length is long, so that the capacity of the injection machine for molding is required to be unnecessarily large, there is a problem that the manufacturing cost of the mold is increased.

Accordingly, the present invention has been made in order to solve the above problems, the mold of the panel to insert the film to be molded to be able to mold the panel without inverting the state of the product, the mold structure is simple and the mold production It is an object of the present invention to provide a method for manufacturing a panel for inserting and molding a film which is made possible by the low cost and low capacity of an injection machine for molding.

Another object is that the mold of the panel inserting the film can be molded without inverting the state of the product, so that the mold structure is simple, the mold manufacturing cost is low, and the capacity of the injection machine for molding is increased. It is to provide a mold for manufacturing a panel for inserting and molding a film made possible with a small number.

1 is an assembly view of a mold according to the present invention,

2 is an assembly view illustrating a panel take-out of a mold according to the present invention;

Figure 3 is a plan view showing a lower mold according to the present invention,

4 is a right cross-sectional view showing a panel forming state of FIG. 1;

5 is a plan view showing the upper mold according to the present invention,

6 is a plan view showing the runner core base of FIG.

7 is a plan view of FIG. 6;

8 is a cross-sectional view taken along the line A-A of FIG.

9 is a plan view showing a lower core of the panel according to the present invention;

10 is a front view of FIG. 9,

11 is a plan view of the first runner core fitted to the runner core base of FIG. 6;

12 is a right side view of FIG. 11;

13 is a front view of FIG. 11,

14 is a plan view of a second runner core fitted to the runner core base of FIG. 6;

15 is a left side view of FIG. 14;

16 is a bottom view of FIG. 14;

17 is a front view of an angular eject pin coupled to the first and second runner cores of FIGS. 11 and 14 to move the first and second runner cores up and down;

18 is a plan view of FIG. 17;

19 is a cross-sectional view illustrating a mold for molding a panel by inserting a film according to the prior art;

* Description of the symbols for the main parts of the drawings *

F: Film G: Pinpoint Gate

Q: Cavity Space R: Runner

PL: Parting Line W: Panel

100: upper mold 110: screw bush

120: hot runner 130: top plate

130a: groove 131: upper core

131a: upper panel forming core 131b: screw fixing core

140: fixed plate 150: block

200: lower mold 210: lower plate

210a: home 211: bottom core

211a: panel lower core fixing block 211b: panel lower core

211c: runner core base 220: eject plate

230: eject pin pin 240: angular eject pin

241: head 242: angular eject pin coupling portion

250,255: 1st, 2nd runner core 260: Fixed version

270: leg block

In order to achieve the above object, the present invention inserts a film into a parting line formed by an upper mold fixed to the upper mold of the injection molding machine and a lower mold fixed to the lower die, and the resin flowing into the upper and lower plates by the nozzle and the screw bush of the injection molding machine. A method of forming a panel by filling into a cavity space of the upper and lower cores accommodated and cooling and decharging for a predetermined time, the method comprising: a panel filled in the cavity space is in close contact with the lower core of the lower mold retreating together with the lower plate; Pushing each of the first and second runner cores toward the upper plate by a plurality of angular eject pins whose ends are fixed by the eject plate and the eject pin fixing plate which are interlocked as the ejecting rod disposed at the rear of the lower plate is operated; The first and second runner cores move laterally at the ends of the angular eject pins. A pair of first and second runner cores are gradually opened at a predetermined inclination angle according to the protrusion length of the eject rod and the angular eject pin to push out the runner which is a supply passage of the resin to the outside, and the force of the eject rod is separated from the eject plate When it is removed from the eject pin fixing plate, the eject plate, the eject pin fixing plate, and the angular eject pin move to the fixing plate fixed to the lower plate, and at the same time, each of the angular eject pins pulls each of the first and second runner cores toward the lower plate to prepare for forming. It characterized in that it comprises a step of becoming a state.

In addition, the film is inserted into a parting line formed by the upper mold fixed to the upper mold of the injection molding machine and the lower mold fixed to the lower mold, and the resin flowing through the screw bush is filled into the cavity space of the upper and lower cores accommodated in the upper and lower plates, and cooled for a predetermined time. In a mold for molding a panel by discharging, a cavity space corresponding to an upper surface of the panel is formed to form an upper core installed under the upper plate fastened to the upper fixing plate, and a cavity space corresponding to the lower surface of the panel. And a lower core installed at an upper part of the lower plate fastened to the fixing plate, and resin supplied to the screw bush is connected to a runner of the upper and lower cores, guided downward from the side of the panel, and supplied to the cavity space by a curved gate. As it protrudes into the opening to help the runners out and sink backwards A pair of one or more first and second runner cores installed in close contact with each other to form a runner, and one end is inserted into a lower portion of the first and second runner cores so as to be slidable in the width direction and restricted in the longitudinal direction. A plurality of angular eject pins, one end of which is fixed by an eject plate and an eject pin fixing plate interlocked as the ejecting rod disposed at the rear of the lower plate is operated, is provided.

Hereinafter, with reference to the accompanying drawings will be described in detail a method for producing a panel for inserting and molding the film of the present invention.

1 is an assembly diagram of a mold according to the present invention, Figure 2 is an assembly diagram illustrating a panel take-out of the mold according to the present invention, the same parts as in Fig. 19 illustrating the prior art with the same reference numerals, the description is Omit.

The present invention inserts the film F into the parting line PL formed by the upper mold 100 fixed to the upper plate of the injection molding machine and the lower mold 200 fixed to the lower plate, thereby inserting the nozzle and screw bush of the injection machine (not shown). In the method of forming a panel by filling the resin flowing through the 110 into the cavity space (Q) of the upper and lower cores (131, 211) accommodated in the upper and lower plates (130, 210) to cool for a predetermined time, the panel space is formed in the cavity space (Q) The filled panel W moves in close contact with the lower core 211 of the lower mold 200 with which the lower mold is retracted (S1), and the ejection rod disposed at the rear of the lower mold is interlocked as it operates. A plurality of angular eject pins 240 having one end fixed by the eject plate 220 and the eject pin fixing plate 230 pushing the first and second runner cores 250 and 255 toward the upper plate (S2); The first and second runner cores 250 and 255 are the angular In addition, the pair of first and second runner cores 250 and 255 gradually move at a predetermined inclination angle according to the protruding lengths of the eject rods and the angular eject pins 240. The step (S3) of discharging the runner (R) and the curved gate (C) as the supply passage to the outside (S3), and when the force of the eject rod is removed from the eject plate 220 and the eject pin fixing plate 230, the eject plate 220 ) And the eject pin fixing plate 230 and the angular eject pin 240 move toward the fixed plate 260 fixed to the lower plate, and each of the angular eject pins 240 is the first and second runner cores ( It characterized in that it comprises a step (S4) to be prepared by pulling the 250, 255) toward the lower plate 210.

In this case, a hot runner 120 is installed in the screw bush 110, the upper plate 130, and the upper core 131 to improve the fluidity of the resin.

Next, the metal mold | die for manufacturing the panel which inserts and shape | molds the film of this invention is demonstrated in detail.

1 to 5, the mold of the present invention is a parting line (PL) formed by the upper mold 100 and the lower mold 200 fixed to the lower mold plate (F) fixed to the upper plate of the injection molding machine (F). In the mold for molding the panel by inserting the resin flowing through the screw bush 110 is filled into the cavity space (Q) of the upper and lower cores (131, 211) accommodated in the upper and lower plates (130, 210) and cooled and removed for a predetermined time. Cavity space (Q) corresponding to the upper surface of the (W) is formed and the upper core 131 is installed on the lower portion of the upper plate 130 is fastened to the upper fixing plate 140 and the lower surface of the panel (W) The lower core 211 installed on the upper portion of the lower plate 210 to which the corresponding cavity space Q is formed and fastened to the fixed plate 260 and the resin supplied to the screw bush 110 are upper and lower cores 131 and 211. Connected to the runner (R) of the One type of tunnel gate, the curve gate type (CURVE GATE; C), which is supplied to the cavity space (Q) and protrudes toward the front to help the runner (R) to be discharged and sinks to the rear to run the curve gate (C) type. One or more pairs of the first and second runner cores 250 and 255 installed in close contact with each other and the first and second runner cores 250 and 255 are fitted to one end of the first and second runner cores 250 and 255 so as to be slidable in the width direction and restricted in the longitudinal direction. In addition, a plurality of angular eject pins 240, one end of which is fixed by the eject plate 220 and the eject pin fixing plate 230, which are interlocked as the ejecting rod disposed at the rear of the lower plate is operated. .

Reference numerals a, b and c are the respective pins for ejecting the runner R and the panel W, d and e are cooling water supply passages, and 120 is a resin supplied to the screw bush 110. The hot runner is installed to prevent the hardening, 150 is a block for installing the hot runner 120.

Here, the upper core 131 is inserted into the groove 130a of the upper plate 130 and planted in the center to form an upper panel forming core 131a coupled to the upper portion of the panel W, and It is in close contact with one side of the upper panel forming core (131a) includes a screw fixing core (131b) is fitted into the groove (130a) and is fixed, the screw bush 110 is inserted.

The lower core 211 is installed in the center of the panel lower core fixing block 211a fixed to the groove 210a of the lower plate 210 and the panel lower core fixing block 211a to be installed in the center of the panel. The panel lower core 211b forming the recess and the groove 210a are fitted to the panel lower core 211b and closely adhere to one side of the panel lower core 211b while the runner R is moved when the first and second runner cores 250 and 255 move upward. And a runner core base having a runner core guide part and a runner (R) to be described later, inclined so as to form a passage of the runner and the curve gate when the lower portion moves, and runs in both directions of the runner and the curve gate so as to discharge the curved gate (C) ( 211c).

Here, the runner core base 211c has a runner R formed at a position coinciding with the screw bush 110 as shown in FIGS. 6 to 8, and communicates with the runner R and also curvegate. The runner core guide portion 211c1 is formed in which the first and second runner cores 250 and 255 are inserted and moved up and down so that the resin is discharged to (C) to form the panel W.

The runner core guide part 211c1 guides the first and second runner cores 250 and 255 to closely contact the panel lower core 211b and the first and second runner cores 250 and 255 to form the panel W. The panel W is formed to be in communication with the sub guide groove 211c1-1 and the molding part guide groove 211c1-1, and is formed by the curved gate C, which is a kind of tunnel gate, on the side of the panel W. T-shaped guide grooves formed on the sidewalls of the runner core moving grooves 211c1-2 and the runner core moving grooves 211c1-2 to prevent lateral deviation of the first and second runner cores 250 and 255. (211c1-3).

9 and 10, the panel lower core 211b is formed in a predetermined shape to form a lower portion of the panel W, and the first and second runner cores 250 and 255 are disposed at a predetermined side surface thereof. The runner core close contact grooves 211b-1 are formed to be in close contact with each other to form a predetermined position on the side surface of the panel W.

Meanwhile, as shown in FIGS. 11 to 16, the first and second runner cores 250 and 255 are formed in one side surface of the panel W while slidingly inserted into the molding part guide grooves 211c1-1. In addition, the molded parts 250a and 255a of which the pin point gates G are formed are extended together with the molded parts 250a and 255a and guided to the runner core moving grooves 211c1-2. Runner forming portions 250b and 255b in which the pin point gates G communicate with each other are formed, and protrude inclined to one side surfaces of the runner forming portions 250b and 255b to be inserted into the guide grooves 211c1-3 and up and down. T-shaped guides 250c and 255c which are to be moved, and angular eject pin coupling grooves 250d and 255d, into which the angular eject pins 240 are fitted, are formed at the rear of the runner forming parts 250b and 255b. .

In addition, the angular eject pin 240 has a head 241 to be fitted to the eject plate 220, as shown in Figs. An angular eject pin coupling portion 242 is provided with an angular eject pin coupling groove 250d and 255d to be slidable and not to move in the axial direction.

Therefore, when the mold is installed in the upper and lower die plates of the injection molding machine, the nozzle of the injection molding machine is installed to be in close contact with the screw bush 110 and set so that the resin is supplied from the nozzle of the injection molding machine.

That is, the resin supplied to the screw bush 110 from the nozzle of the injection molding machine is formed on the upper and lower cores 131 and 211 through the hot runner 120, the runner R, and the curve gate C of the runner cores 250 and 255. It is filled into the cavity space Q.

Thereafter, the resin filled into the cavity space Q is cooled for a predetermined time, and when the lower mold 200 moves together with the lower mold plate, the panel W moves to a state in which the lower core 211 is fitted.

Next, when the ejector rod of the injection machine disposed at the rear of the fixing plate 260 is advanced, the eject plate 220 and the eject pin fixing plate 230 are advanced, and at the same time, the angular eject pin 240 is advanced. The first and second runner cores 250 and 255 move forward along the guide grooves 211c1-3 of the runner core base 211c to discharge the runner R, the curve gate C, and the panel W together. Will be.

Then, when the ejector rod of the injection machine is retracted, the eject plate 220 and the eject pin fixing plate 230 are retracted by an elastic member (not shown) installed between the leg block 270 and at the same time the angular eject pin 240 is removed. As the first and second runner cores 250 and 255 move backward, the pair of runner cores 250 and 255 closely contact each other to form the runner R and the pin point gate G.

That is, a curved gate which is a type of tunnel gate in which the panel W is formed in a two-stage mold by the first and second runner cores 250 and 255 coupled to the runner core base 211c provided in the lower core 211 ( C) can be molded, the structure of the mold is simple to reduce the cost required for manufacturing, and the productivity can be improved by molding with a small capacity when selecting an injection machine for molding.

On the other hand, even when the first and second runner cores 250 and 255 do not move up and down and are not opened, if eject pins are pushed out from the lower part of the runner R, forced ejection of the runner R and the curve gate C is performed. Would also be possible.

As described above, the mold of the panel to insert and mold the film can be molded without inverting the state of the product, so that the mold structure is simple and the mold manufacturing cost is low, and the injection molding machine for molding There is an effect that it becomes possible with a small capacity.

On the other hand, although described based on the preferred embodiment of the present invention, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit and technical means of the present invention.

Claims (4)

The film is inserted into the parting line consisting of the upper mold fixed to the upper mold of the injection molding machine and the lower mold fixed to the lower die, and the resin flowing through the nozzle of the injection molding machine and the screw bush is filled into the cavity space of the upper and lower cores accommodated in the upper and lower plates. In the method of forming a panel by cooling and discharging, The panel filled in the cavity space is moved in close contact with the lower core of the lower mold retreating together with the lower template (S1), and the eject plate and the eject pin interlocked as the ejecting rod disposed at the rear of the lower template is operated. A plurality of angular eject pins, one end of which is fixed by the fixing plate, pushing each of the first and second runner cores toward the upper die plate (S2), and the first and second runner cores are transversely formed at the ends of the angular eject pins. In addition to the step of ejecting the runner and the curve gate of the resin supply passage to the outside while gradually expanding at a predetermined inclination angle according to the ejection rod and the angular eject pin length of the eject (S3), the force of the eject rod When the eject pin and the eject pin fixing plate are removed, the eject plate, the eject pin fixing plate, and the angular eject pin are moved to the fixing plate fixed to the lower plate. Of the angular eject pin method for the production of each of the first and second panel by pulling the runner core toward the lower plate by insert molding the film characterized in that it comprises a step (S4) which is a molded readiness. The film is inserted into the parting line formed by the upper mold fixed to the upper plate of the injection molding machine and the lower mold fixed to the lower plate, and the resin flowing through the screw bushes is filled into the cavity space of the upper and lower cores accommodated in the upper and lower plates, and then cooled and removed. In the mold for forming the panel, A cavity space corresponding to an upper surface of the panel is formed, and an upper core installed at a lower portion of the upper plate fastened to the upper fixing plate, and a cavity space corresponding to a lower surface of the panel is formed to upper part of the lower plate fastened to the fixed plate. The lower core installed and the resin supplied to the screw bush are connected to the runners of the upper and lower cores to be guided downward from the side of the panel and supplied to the cavity space by the curve gate, and protrude forward to assist the discharge of the runners. And one or more pairs of first and second runner cores installed in close contact with each other to form a resin supply passage in a curved gate type, and one end of which is inserted into a lower portion of the first and second runner cores to be slidable in the width direction and moved in the longitudinal direction In addition to being installed so as to limit the interlock as the ejector rod disposed behind the lower plate is operated A mold for manufacturing a panel for inserting and molding a film comprising a plurality of angular eject pins having one end fixed by an eject plate and an eject pin fixing plate. The method of claim 2, The lower core includes a panel lower core fixing block which is inserted into and fixed to the groove of the lower plate, a panel lower core which is planted in the center of the panel lower core fixing block to form a lower part of the panel, and is fitted into the groove. Runner core guide grooves and runner core bases formed with inclined runner core guide grooves and runners are formed to be in close contact with one side of the lower panel of the panel and to allow runners and curve gates to be discharged when the upper part of the runner core is moved. A mold for manufacturing a panel for inserting and molding a film, characterized in that. The method of claim 2, The runner core is inserted into the molded part guide groove of the runner core base to form a side surface of the panel while sliding, and includes a molded part configured with a curved gate, and extends integrally with the molded part to the runner core moving groove. A runner forming portion which is guided and communicates with a runner is formed, a guide which is protruded obliquely to one side of the runner forming portion and is inserted into a guide groove to move up and down, and the angular eject pin is formed at the rear of the runner forming portion. A mold for manufacturing a panel for inserting and molding a film, characterized in that the angular eject pin coupling groove is formed.