WO2012165592A1

WO2012165592A1 - Two-color molding die and two-color molding method

Info

Publication number: WO2012165592A1
Application number: PCT/JP2012/064199
Authority: WO
Inventors: 工工藤; 勇酒寄
Original assignee: 株式会社江東彫刻
Priority date: 2011-06-03
Filing date: 2012-05-31
Publication date: 2012-12-06
Also published as: JPWO2012165592A1; JP5637648B2

Abstract

At the time of injection molding a first resin, a penetration flow path (18) is formed at the rear side of a first portion (11) by a flow path pin (14). At the time of die release, the flow path pin (14) is moved in a direction intersecting the opening/closing direction of the die to remove the pin. A second resin is filled in a second portion (12) using a second female die. The second resin is filled in the portion (second portion (12)) surrounded by the first portion (11), through the penetration flow path (18). Accordingly, the second resin is filled in a closed portion of a fine figure or a small character, through the penetration flow path (18).

Description

Two-color molding die and two-color molding method

The present invention molds a display part of a resin display part, for example, a vehicle key for locking / unlocking a vehicle door without using a mechanical key, or for starting an engine or starting a hybrid system. The present invention relates to a two-color molding die and a two-color molding method.

There are known automobiles that lock / unlock doors without using a mechanical key, or that operate an engine or start a hybrid system. Such an automobile vehicle key is provided with an operation unit having a door locking / unlocking graphic and a trunk locking / unlocking graphic. Since the display part of the vehicle key is a fine figure, it is common to form the operation part with resin and attach a figure seal to the surface of the resin.

On the other hand, the key tops for various inputs of electronic-related devices are made of colored resin or light-transmitting resin (first resin), and the parts of characters and figures are molded. The other portions are molded with a shielding resin (second resin). When molding such a key top, a two-color molding mold having a common male mold, a first female mold, and a second female mold is used.

In two-color molding using a two-color molding die, it is known that a part of a figure shape is molded with a first resin by a first shot, and a part other than the figure shape is molded by a second resin by a second shot. Yes. In this case, the first shot is performed using the common male mold and the first female mold, and the second shot is performed using the second female mold in a state where the molded product of the first resin is left in the common mold ( For example, see Patent Document 1).

In the case of forming an operation part of a car key for an automobile, it is considered that a figure of a display part is formed by two-color molding. However, since the figure of the operation part of the vehicle key is a fine figure, it is difficult to secure a route such as a bridge when a second shot is performed on the molded product of the first resin. In order to fill the second resin in the part surrounded or surrounded, it is necessary to take measures such as enlarging the operation part. Further, since the figure of the operation part of the vehicle key is a fine figure, the first resin of the figure part may be deformed by the filling pressure of the second resin when the second resin is filled, and the appearance may be deteriorated. was there.

JP 7-329111 A

The present invention has been made in view of the above circumstances, and is a two-color molding die and two-color molding die capable of performing two-color molding without deteriorating the appearance even with a member provided with a display portion of fine figures and small characters. An object is to provide a color molding method.

In order to achieve the above object, a two-color molding die of the present invention according to claim 1 is provided with a common male mold, a first female mold, and a second female mold, between the common male mold and the first female mold. The first portion of the first resin is injection-molded, and the second portion of the second resin is injection-molded between the second female mold while the first portion is left in the common male mold. In a two-color molding die for molding a molded product member in which the second part surrounded by one part is present, the mold moves in a direction intersecting the opening / closing direction of the common male mold and the first female mold, and the first resin is injected At the time of molding, after having provided a through-flow channel pin that forms a through-flow channel penetrating the first part defining the second part on the back side of the first part, and after molding the first part with the first resin When the through-flow passage pin is pulled out and the second part of the second resin is injection-molded with the second female die, the first part Wherein said second resin to said second portion being defined by the first portion through the through-passage, characterized in that it is filled in the back side of the.

According to the first aspect of the present invention, a through flow path is formed on the back side of the first portion by the through flow path pin during the injection molding of the first resin, and intersects the opening and closing direction when the common male mold and the first female mold are released. The through-flow channel pin moves and is pulled out in the direction to be filled, and the second resin of the second part is filled using the second female mold in a state where the first part of the first resin is left in the common male mold. The second resin is filled in a part (second part) partitioned by the first part through the part outside the first part (second part) and the through flow path, and is divided by the first part. A molded article member having a part is molded.

For this reason, even if the first part is a display unit for fine figures and small characters, the second resin is filled through the through flow path into the closed part (second part defined by the first part) of the fine figures and small characters. can do. Therefore, even if it is a member provided with the display part of a fine figure or a small character, it becomes possible to perform two-color molding without deteriorating appearance. *

In addition, the 2nd site | part divided by the 1st site | part contains the 2nd site | part completely enclosed by the 1st site | part.

In order to achieve the above object, a two-color molding die of the present invention according to claim 2 includes a common male mold, a first female mold, and a second female mold, and is provided between the common male mold and the first female mold. Two-color molding in which the first part of the first resin is injection-molded and the second part of the second resin is injection-molded with the second female mold in a state where the first part is left in the common male mold In the mold, a holding channel pin that moves in a direction intersecting the opening / closing direction of the common male die and the first female die and forms a holding reinforcing channel on the back side of the first portion at the time of injection molding of the first resin. The holding channel pin is pulled out after the first part is molded with the first resin, and the second part of the second resin is injection-molded with the second female mold. The holding channel on the back side of one part is filled with the second resin, and the shape of the first part is maintained.

In the present invention according to claim 2, a holding channel is formed on the back side of the first portion by the holding channel pin at the time of injection molding of the first resin, and intersects the opening and closing direction when the common male mold and the first female mold are released. The holding channel pin moves and is pulled out in the direction to be filled, and the second resin of the second part is filled using the second female mold while leaving the first part of the first resin in the common male mold. The second resin is also filled in the holding channel on the back side of the first part, and a molded product member in which the back side of the first part is held by the second resin is molded.

For this reason, even if the first part is a display unit for fine figures and small characters, the second resin is filled in the holding channel on the back side of the fine figures and small letters, and the parts of the fine figures and small characters (first part) ) Is not affected by deformation of the second part due to the filling pressure. Therefore, even if it is a member provided with the display part of a fine figure or a small character, it becomes possible to perform two-color molding without deteriorating appearance.

In order to achieve the above object, a two-color molding die of the present invention according to claim 3 includes a common male mold, a first female mold, and a second female mold, and is provided between the common male mold and the first female mold. The first portion of the first resin is injection-molded, and the second portion of the second resin is injection-molded between the second female mold while the first portion is left in the common male mold. In a two-color mold for molding a molded product member in which the second part defined by one part is present, the mold moves in a direction crossing the opening / closing direction of the common male mold and the first female mold, and the first resin is injected At the time of molding, it has a through-flow channel pin that forms a through-flow channel penetrating the first part that defines the second part on the back side of the first part, and intersects the opening and closing direction of the common male mold and the first female mold A holding channel pin that forms a holding channel on the back side of the first part during the injection molding of the first resin. After forming the first part with grease, the through flow channel pin and the holding flow channel pin are pulled out, and when the second part of the second resin is injection molded between the second female mold, The second resin is filled in the second part partitioned by the first part through the through channel on the back side of the first part, and the second resin is supplied to the holding channel on the back side of the first part. And the shape of the first part is maintained.

In the present invention according to claim 3, a through flow path is formed on the back side of the first part by the through flow path pin at the time of injection molding of the first resin, and a holding flow path is provided on the back side of the first part by the holding flow path pin. When the common male mold and the first female mold are separated from each other, the through flow channel pin and the holding flow channel pin are moved and removed in a direction crossing the opening / closing direction, and the first portion of the first resin is inserted into the common male mold. The second resin in the second part is filled with the second female mold in the state of remaining. The second resin is filled in a portion outside the first portion (second portion) and a portion (second portion) partitioned by the first portion through the through-flow channel, and the back side of the first portion is retained. A molded product member is formed in which the flow path is also filled, and there is a second part partitioned by the first part, and the back side of the first part is held by the second resin.

For this reason, even if the first part is a display unit for fine figures and small characters, the second resin is filled through the through flow path into the closed part (second part defined by the first part) of the fine figures and small characters. In addition, the second resin is filled in the holding channel on the back side of the fine figure or small character, and the fine graphic or small character part (first part) is affected by deformation due to the filling pressure of the second resin. Is not enough. Therefore, even if it is a member provided with the display part of a fine figure or a small character, it becomes possible to perform two-color molding without deteriorating appearance.

The two-color molding die of the present invention according to claim 4 is the two-color molding die according to any one of claims 1 to 3, wherein the surface shape of the first part is a fine figure. The second part is a base-shaped member including the surface of the part partitioned into the first part and partitioned into the surface shape.

In the present invention according to claim 4, the second resin can be filled in the graphic part of the base member and the closed part of the character part, and the back side of the fine graphic part and the character part can be held by the second resin. The member can be formed by two-color molding without deteriorating the appearance. When two-color molding is performed, there is no bridge for filling the second resin on the back side of the closed part of the graphic part or character part, there is no restriction on the shape of the back side of the molded product, and the shape of the member is designed The degree of freedom is greatly improved.

Further, the two-color molding die of the present invention according to claim 5 is the two-color molding die according to any one of claims 1 to 3, wherein the surface shape of the first portion is an automobile. It is the surface shape of the information representing the unlocking state of the lid member, and the second part is the shape of the grip part of the automobile key that surrounds the surface shape and is darker than the surface shape. Features.

In the present invention according to claim 5, the second resin can be filled in the closed part of the fine graphic part and the character part of the grip part of the automobile key, and the back side of the fine graphic part and the character part can be filled with the second resin. It is possible to form the grip part of the automobile key by two-color molding without deteriorating the appearance. When two-color molding is performed, there is no bridge for filling the second resin on the back side of the closed part of the graphic part or character part, there is no restriction on the shape of the back side of the molded product, and the grip of the car key The degree of freedom in designing the shape of the parts is greatly improved.

In order to achieve the above object, the two-color molding method of the present invention according to claim 6 uses the common male mold to injection-mold the first part which is the surface shape of the graphic information, and then leaves the first part. In a two-color molding method for injection molding a second part that is a base shape partitioned into the first part in a state, when the second part is injection-molded, the resin of the second part is the first part The second portion is filled with a resin in a state of being filled on the back side.

In the present invention according to claim 6, when the second part is injection-molded, the second part is filled with the resin in the state where the resin of the second part is filled on the back side of the surface-shaped part (first part). The resin can be filled into the second portion partitioned into the surface shape through the back side of the surface shape, and the resin can be held on the back side of the surface shape. For this reason, it becomes possible to form the member provided with the display part of a fine figure and a small character by two-color molding, without reducing appearance.

The two-color molding die and the two-color molding method of the present invention can perform two-color molding without deteriorating the appearance even with a member having a fine graphic or small character display portion.

It is an external view of the key for vehicles provided with the operation part shape | molded using the two-color molding metal mold | die which concerns on the example of 1 embodiment of this invention. It is a conceptual diagram of the state which shape | molds a lid unlocking operation part. It is sectional drawing of the lid unlocking operation part in which the 2nd site | part was shape | molded. It is sectional drawing in the case of carrying out injection molding of 1st resin. It is sectional drawing at the time of mold release. It is sectional drawing in the case of carrying out injection molding of 2nd resin. It is sectional drawing in the case of carrying out injection molding of 2nd resin. It is sectional drawing at the time of mold release. It is an external view of a lid unlocking operation part. It is a conceptual diagram of the state which shape | molds an alarm operation part. It is sectional drawing of the alarm operation part in which the 2nd site | part was shape | molded. It is sectional drawing in the case of carrying out injection molding of 1st resin. It is sectional drawing at the time of mold release. It is sectional drawing in the case of carrying out injection molding of 2nd resin. It is sectional drawing in the case of carrying out injection molding of 2nd resin. It is sectional drawing at the time of mold release. It is an external view of an alarm operation unit. It is a conceptual diagram of the state which shape | molds a printer button.

The molded product member molded by the two-color molding die and the two-color molding method of the embodiment of the present invention is applied to, for example, an operation part of a vehicle key of an automobile. By operating the operation part of the vehicle key, the door can be locked / unlocked, the engine can be operated, and the hybrid system can be started. The display part of the operation part of the vehicle key is made of a resin in the form of a door locked / unlocked figure, a trunk locked / unlocked figure, or a signal / alarm warning figure. ing.

In addition, as a molded article member, it can be applied to various molded article members such as key top parts for various inputs of electronic-related devices, panel switch parts for vehicle interiors, and operation switch parts for home appliances.

Referring to FIG. 1, a vehicle key provided with an operation unit that is a molded product member will be described. FIG. 1 shows the appearance of a vehicle key provided with an operation portion formed using a two-color molding die according to an embodiment of the present invention.

As shown in FIG. 1, an automobile vehicle key 1 has a lock / unlock operation unit 2 for outputting a door lock signal, and a lid unlock operation unit 4 for outputting a trunk lid unlock signal. An alarm operation unit 5 for outputting various signals and alarms is provided. The locking / unlocking operation section 2 is provided with a figure 6 indicating the door locking / unlocking state, and the lid unlocking operation section 4 is provided with a vehicle body graphic 8 indicating the unlocking state of the trunk lid. . Further, the alarm operation unit 5 is provided with a graphic 7 representing an alarm device and a level graphic 9 for displaying an alarm level.

The locking / unlocking operation unit 2, the lid unlocking operation unit 4 and the alarm operation unit 5 are molded articles made of resin. The figure 6, the figure 7, the vehicle body figure 8 indicating the unlocking state of the trunk lid, and the level figure 9 are provided. The first portion 11 (see FIG. 2 described later) is formed. In addition, the second portion 12 (the portion including the surrounded portion: between the keyhole portion, the vehicle window portion, and the level figure 9) defined by the outer portion of the first portion (the shape portion of the operation portion) and the graphic portion ( 2), which will be described later. The first part 11 (figure 6, figure 7, body figure 8 and level figure 9) is made of, for example, a white resin as the first resin, and the second part 12 is made of, for example, a black resin as the second resin. ing.

The locking / unlocking operation unit 2, the lid unlocking operation unit 4, and the alarm operation unit 5 including the first part 11 and the second part 12 are formed by injection molding the white first part 11 using a common male mold. The black second part 12 is injection-molded with the first part 11 left in the common male mold, and the locking / unlocking operation unit 2 in which the part partitioned by the first part 11 and the enclosed part exist, The lid unlocking operation unit 4 and the alarm operation unit 5 are formed.

Hereinafter, the lid unlocking operation unit 4 will be described with reference to FIGS. 2 and 3.

FIG. 2 shows a concept of a state in which a resin molded product of a display portion indicating the unlocked state of the trunk lid is molded, and FIG. 3A shows a cross section of the window portion of the vehicle body figure of the operation portion formed with the second portion. FIG. 3 (b) shows a cross section of the main body of the vehicle figure of the operation part formed with the second part.

As shown in FIGS. 2 and 3, there are provided channel pins 14 (through channel pins, holding channel pins) that move in a direction intersecting the opening / closing direction of the common male type and the first female type. The passage pin 14 penetrates to the vehicle window portion of the vehicle body graphic 8 during the injection molding of the first portion 11 (through the outer portion of the first portion 11 surrounding the vehicle window portion), and the first pin 11 A holding pin portion 16 disposed on the back side of the vehicle body portion of the vehicle body figure 8 at the time of injection molding of the one part 11 is provided.

After the first portion 11 is molded with the first resin, the flow path pin 14 moves in the direction intersecting the opening / closing direction of the common male mold and the first female mold (direction orthogonal to the mold release direction) and is pulled out. By passing the channel pin 14 (through pin portion 15) in a direction perpendicular to the mold release direction, the through channel 18 is formed on the back side of the first portion 11 (portion where the vehicle window portion is present). Further, the flow path pin 14 (holding pin portion 16) is pulled out in a direction perpendicular to the releasing direction, whereby the holding flow path 19 is formed on the back side of the first portion 11 (the portion where the vehicle body portion exists).

After molding the first part 11 in which the through channel 18 and the holding channel 19 are formed, the second part 12 of the second resin is injection molded between the common male mold and the second female mold. At this time, the second resin (black resin) flows through the through channel 18 on the back side of the first portion 11, and the second resin (black resin) is filled in the portion of the vehicle window portion of the vehicle body graphic 8. Further, the holding flow path 19 on the back side of the first portion 11 is filled with the second resin (black resin), and the shape of the vehicle body portion of the vehicle body figure 8 is held.

The situation where the lid unlocking operation unit 4 shown in FIG. 2 is molded using a two-color molding die will be described with reference to FIGS.

4 and 5 show a cross section when the first resin is injection molded, FIGS. 6 and 7 show a cross section when the second resin is injection molded, and FIG. 8 shows a cross section when released from the mold. (A) of each figure is a cross section of the part of the penetration flow path 18, (b) is a cross section of the part of the holding | maintenance flow path 19.

As shown in FIG. 4, mold parts for forming the first portion 11 are provided on the opposing surfaces of the common male mold 21 and the first female mold 22 to form the first space 23. As shown in FIG. 4A, the through pin portion 15 of the flow path pin 14 is inserted into the back side of the first portion 11 (the portion where the vehicle window portion exists). At the same time, as shown in FIG. 4B, the holding pin portion 16 of the flow path pin 14 is inserted into the back side of the first portion 11 (the portion where the vehicle body portion exists). In a state where the mold is clamped, for example, a white first resin is filled into the first space 23 from the first injection path 24 of the common male mold 21 on the fixed side.

As shown in FIG. 5, by moving the first female mold 22 away from the mold, the common male mold 21 and the first female mold 22 are released, and the flow path pin 14 is pulled out in a direction perpendicular to the release direction. The first male part 21 is left in the common male mold 21. As shown in FIG. 5A, a through flow path 18 is formed at a site where the through pin portion 15 of the flow path pin 14 of the first site 11 was present. In addition, as shown in FIG. 5B, a holding channel 19 is formed at a site where the holding pin portion 16 of the channel pin 14 of the first site 11 was present.

As shown in FIG. 6, when filling the second resin, the second female mold 25 is used instead of the first female mold 22 (see FIGS. 4 and 5). The second female mold 25 is provided with a mold part for molding the second part 12 (see FIG. 7) on the surface facing the first part 11 left in the common male mold 21, A second space 26 for forming the second portion 12 (see FIG. 7) is formed between the two female dies 25.

As shown in FIG. 7, for example, a black second resin is filled into the second space 26 (see FIG. 6) from the second injection path 27 of the common male mold 21 on the fixed side in a clamped state. . As shown in FIG. 7A, the second resin is sent from the through flow path 18 of the first part 11 to the vehicle window part together with the outer part of the second part 12, and the vehicle window part of the second part 12. The second resin (black resin) is filled in the part (the part of the vehicle window portion of the vehicle body figure 8: the part surrounded by the first part 11). Further, as shown in FIG. 7B, the holding channel 19 of the first part 11 is filled with the second resin (black resin) together with the outer part of the second part 12, and the shape of the first part 11 is The shape of the first portion 11 (the shape of the portion corresponding to the vehicle portion of the vehicle body graphic 8) is maintained without being affected by the filling pressure of the second resin.

As described above, as shown in FIG. 2, the lid unlocking operation unit 4 (locking / unlocking operation unit 2) including the first part 11 and the second part 12 is formed. FIG. 9 shows the appearance of the formed lid unlocking operation unit 4.

In the two-color molding die described above, the common male mold 21 and the first female mold 22 allow the through-flow channel 18 on the back side of the first site 11 by the through-pin portion 15 of the flow-path pin 14 during the injection molding of the first site 11. Is formed, and a holding channel 19 is formed on the back side of the first portion 11 by the holding pin portion 16 of the channel pin 14. The second male mold 21 and the second female mold 25 fill the second resin with the outer portion of the first portion 11 (second portion 12). At the same time, the portion surrounded by the first portion 11 from the through channel 18 (the vehicle window portion) is filled with the second resin, and the back side of the first portion 11 (the portion corresponding to the vehicle body portion of the vehicle body figure 8). ) Is filled with the second resin.

Thereby, the part (vehicle window part) surrounded by the first part 11 without forming a route such as a bridge in the releasing direction of the common male mold 21, the first female mold 22 and the second female mold 25. The second resin can be filled. For this reason, the lid unlocking operation unit 4 (locking / unlocking operation unit 2), which includes the first part 11 and the second part 12, and has the second part 12 surrounded by the first part 11 like a vehicle window part. ) Can be formed by inexpensive two-color molding, and it is not necessary to form a route such as a bridge in the space on the back side, so that the degree of freedom in shape is greatly improved.

Further, the back side of the first portion 11 (the portion corresponding to the vehicle body portion of the vehicle body figure 8) is held by the second resin of the holding channel 19, and the shape of the first portion 11 is not affected by the filling pressure of the second resin. The shape of the first portion 11 can be maintained. For this reason, two-color molding can be performed without impairing the appearance of the vehicle figure 8.

Next, the alarm operation unit 5 will be described with reference to FIGS.

FIG. 10 shows a concept of a state in which a resin molded product of the alarm operation unit 5 is molded, and FIG. 11 shows a cross section in a state in which the second part is molded.

As shown in FIGS. 10 and 11, there are provided channel pins 31 (through channel pins, holding channel pins) that move in a direction intersecting the opening / closing direction of the common male mold and the first female mold. The flow path pin 31 extends through the back side of the level graphic 9 (the back side of the part defined by the level graphic 9) to the back side of the graphic 7 during the injection molding of the first part 11. Yes.

After the first portion 11 is molded with the first resin, the flow path pin 31 is moved and pulled in a direction intersecting the opening / closing direction of the common male mold and the first female mold (direction orthogonal to the mold release direction). When the channel pin 31 is pulled out in a direction perpendicular to the mold release direction, a through channel 32 is formed on the back side of the level graphic 9 and a holding channel 33 is formed on the back side of the graphic 7.

After molding the first part 11 in which the through channel 32 and the holding channel 33 are formed, the second part 12 of the second resin is injection molded between the common male mold and the second female mold. At this time, the second resin (black resin) flows through the through channel 32 on the back side of the first portion 11, and the second resin (black resin) is filled in a narrow portion between the level figures 9. . In addition, the second resin (black resin) is filled in the holding flow path 33 on the back side of the figure 7 in the first portion 11, and the shape of the figure 7 is held.

The situation where the alarm operation unit 5 shown in FIG. 11 is molded using a two-color molding die will be described with reference to FIGS.

FIGS. 12 and 13 show a cross section when the first resin is injection molded, FIGS. 14 and 15 show a cross section when the second resin is injection molded, and FIG. 16 shows a cross section at the time of mold release.

As shown in FIG. 12, the first space 43 is formed by providing mold parts for forming the first portion 11 on the opposing surfaces of the common male mold 41 and the first female mold 42. The flow path pin 31 is inserted into the back side of the level graphic 9 of the first part 11, and the front end side of the flow path pin 14 is inserted into the back side of the graphic 7 of the first part 11. In a state where the mold is clamped, for example, a white first resin is filled into the first space 43 from the first injection path 44 of the common male mold 41 on the fixed side.

As shown in FIG. 13, by releasing the first female mold 42, the common male mold 41 and the first female mold 42 are released, and the flow path pin 31 is pulled out in a direction perpendicular to the release direction. The first male part 41 is left in the common male mold 41. A through channel 32 is formed on the back side of the level graphic 9, and a holding channel 33 is formed on the back side of the graphic 7.

As shown in FIG. 14, when filling the second resin, the second female mold 45 is used instead of the first female mold 42 (see FIGS. 12 and 13). The second female mold 45 is provided with a mold portion for molding the second portion 12 (see FIG. 15) on the surface facing the first portion 11 left in the common male die 41. A second space 46 for forming the second portion 12 (see FIG. 15) is formed between the two female dies 45.

As shown in FIG. 15, for example, a black second resin is filled into the second space 46 from the second injection path 47 of the fixed-side common male mold 41 in a clamped state. The second resin is sent from the through channel 32 of the first part 11 to the narrow part 12c between the level figures 9 together with the outer part of the second part 12, and is partitioned by the level figure 9 of the second part 12. The narrow portion 12c is reliably filled with the second resin (black resin). Further, the second resin (black resin) is filled in the holding channel 33 of the first part 11 together with the outer part of the second part 12, and the shape of the first part 11 is not affected by the filling pressure of the second resin. The shape (figure 7) of the first part 11 is retained.

Thus, as shown in FIG. 10, the alarm operation unit 5 including the first part 11 and the second part 12 is formed. FIG. 17 shows the appearance of the molded alarm operation unit 5.

In the two-color molding die described above, the common male mold 41 and the first female mold 42 allow the flow passage pin 31 to pass through the through-flow passage 32 on the back side of the level graphic 9 of the first portion 11 during the injection molding of the first portion 11. Is formed, and the holding channel 33 is formed on the back side of the graphic 7 of the first portion 11 by the channel pin 31. Then, the second male mold 41 and the second female mold 45 fill the second resin with a portion outside the first portion 11 (second portion 12). At the same time, the second resin is filled in the narrow portion 12c defined by the level graphic 9 of the second portion 12 from the through flow passage 32, and the holding flow channel on the back side of the first portion 11 (the portion of the graphic 7). 33 is filled with the second resin.

Thereby, the second resin can be surely filled even in the narrow portion 12c partitioned by the level graphic 9 which is a fine graphic. For this reason, the alarm operation part 5 which consists of the 1st site | part 11 and the 2nd site | part 12, and has the 2nd site | part 12 of the site | part divided by the fine figure can be formed by cheap two-color molding.

Further, the back side of the first portion 11 (the portion of the graphic 7) is held by the second resin of the holding flow path 33, and the shape of the first portion 11 is not affected by the filling pressure of the second resin, and the first portion 11 The shape can be maintained. For this reason, two-color molding can be performed without impairing the appearance of the figure 7 (the shape of the alarm device).

The lid unlocking operation unit 4 and the alarm operation unit 5 described above are integrated with the locking / unlocking operation unit 2 to form the vehicle key 1 shown in FIG.

By using the above-described two-color molding die, even if the first part 11 is a display unit for a fine figure or small character, it is partitioned or surrounded by a fine figure or small character closed part (the first part 11). The second portion 12) can be filled with the second resin through the through flow passage, and the second resin is filled in the holding passage on the back side of the fine figure or small character so that the fine figure or small character portion (first portion) 1 part 11) is not affected by deformation due to the filling pressure of the second resin. Accordingly, even if the lid unlocking operation unit 4 (locking / unlocking operation unit 2) or the alarm operation unit 5 having a display unit for fine figures and small characters is used, two-color molding can be performed without deteriorating the appearance. It becomes possible.

Note that the figures 6 and 7 and the body figure 8 of the lid unlocking operation unit 4 and the locking / unlocking operation unit 2 are examples, and molding using a two-color mold is a part corresponding to other finely shaped figures. It can be used for molding.

For example, it can be used for forming the printer button 51 shown in FIG. FIG. 18 shows the state of the first part of the printer button 51.

The printer button 51 is provided with half-width, full-width, and kanji characters, and is provided with a channel pin 52 that is inserted on the back side of the half-width and full-width characters and a channel pin 53 that is inserted on the back side of the kanji. A through channel 54 is formed by the channel pin 52, and a through channel 55 is formed by the channel pin 53.

When the second portion of the printer button 51 is molded, the second resin is filled through the through

flow paths

54 and 55 in the part where the character is partitioned and the enclosed part. By filling the second resin through the through

passages

54 and 55, it has fine parts and closed parts (second parts partitioned or surrounded by the first part) like half-width, full-width, and Chinese characters. Even in this case, the second resin can be filled through the through

channels

54 and 55.

For this reason, even in the case of the printer button 51 having a fine surrounding part or a small character, the second resin can be easily filled between the character parts (first parts), and the filling pressure is applied to the first part. Unaffected by deformation due to.

The present invention forms a display part of a resin key, for example, a key part for a vehicle for locking / unlocking a vehicle door without using a mechanical key, or for starting an engine or starting a hybrid system. The two-color molding die and the two-color molding method can be used in the industrial field.

DESCRIPTION OF SYMBOLS 1 Vehicle key 2 Locking / unlocking operation part 4 Lid unlocking

operation part

6, 7 figure 8 Car body figure 11 1st site | part 12 2nd site |

part

14, 31 Channel pin 15 Through-pin part 16 Holding |

maintenance pin part

18, 32 Through

Flow path

19, 33

Holding flow path

21, 41 Common

male mold

22, 42 First

female mold

23, 43

First space

24, 44

First injection path

25, 45 Second

female mold

26, 46

Second space

27, 47 Second injection path

Claims

A common male mold, a first female mold, and a second female mold, wherein a first portion of the first resin is injection-molded between the common male mold and the first female mold, and the first male portion is formed on the common male mold; Two-color molding in which a second part of the second resin is injection-molded between the second female mold in a state where the second part is left, and a molded product member in which the second part defined by the first part is present is formed In the mold,
It moves in a direction intersecting the opening / closing direction of the common male mold and the first female mold, and when the first resin is injection-molded, a through-flow passage that penetrates the first section that defines the second section is formed in the first section. With a through-flow channel pin formed on the back side,
When the first part is molded with the first resin, the through-flow passage pin is pulled out, and the second part of the second resin is injection-molded with the second female mold. The two-color molding die, wherein the second resin is filled in the second part partitioned by the first part through the through channel on the back side of the mold.
A common male mold, a first female mold, and a second female mold, wherein a first portion of the first resin is injection-molded between the common male mold and the first female mold, and the first male portion is formed on the common male mold; In the two-color molding mold for injection molding the second part of the second resin between the second female mold in a state of leaving
A holding flow path pin that moves in a direction intersecting the opening and closing direction of the common male mold and the first female mold, and forms a holding reinforcing flow path on the back side of the first portion at the time of injection molding of the first resin;
When the first part is molded with the first resin, the holding channel pin is pulled out, and the second part of the second resin is injection-molded with the second female mold. The two-color molding die is characterized in that the second resin is filled in the holding flow path on the back side of the first shape to hold the shape of the first portion.
A common male mold, a first female mold, and a second female mold, wherein a first portion of the first resin is injection-molded between the common male mold and the first female mold, and the first male portion is formed on the common male mold; Two-color molding in which a second part of the second resin is injection-molded between the second female mold in a state where the second part is left, and a molded product member in which the second part defined by the first part is present is formed In the mold,
It moves in a direction crossing the opening and closing direction of the common male mold and the first female mold, and a through-flow passage that penetrates the first section defining the second section is formed at the first section at the time of injection molding of the first resin. With a through-flow channel pin formed on the back side,
It moves in a direction crossing the opening and closing direction of the common male mold and the first female mold, and includes a holding channel pin that forms a holding channel on the back side of the first part at the time of injection molding of the first resin,
After the first portion is molded with the first resin, the through flow channel pin and the holding flow channel pin are removed, and when the second portion of the second resin is injection molded with the second female mold In addition,
The second resin is filled in the second part partitioned by the first part through the through channel on the back side of the first part, and the holding channel on the back side of the first part is filled with the second resin. A two-color molding die, which is filled with a resin and maintains the shape of the first portion.
In the two-color molding die according to any one of claims 1 to 3,
The surface shape of the first part is the surface shape of a fine figure,
Said 2nd site | part is a base-shaped member containing the surface of the site | part divided into the said 1st site | part and divided into surface shape. The two-color molding die characterized by the above-mentioned.
In the two-color molding die according to any one of claims 1 to 3,
The surface shape of the first part is a surface shape of information representing the unlocking status of the lid member of the automobile,
The two-color molding die, wherein the second part is a shape of a grip part of an automobile key that surrounds the surface shape and has a dark color with respect to the surface shape.
After the first part which is the surface shape of the graphic information is injection-molded using the common male mold, the second part which is the base shape defined by the first part is injection-molded with the first part remaining. In the two-color molding method, when the second part is injection-molded, the second part is filled with the resin in a state where the resin of the second part is filled on the back side of the first part. Two-color molding method.