JP2005254716A - Instrument panel of vehicle, molding method and molding apparatus of instrument panel of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an instrument panel having a tear line composed of a plurality of grooves S1 to S9 along an outer margin of a lid portion 1c and showing a good developability of an air bag, and to provide a forming method and a forming apparatus capable of easily inexpensively forming the panel. <P>SOLUTION: A plurality of partitioning plates 31 to 31 are mounted correspondingly at positions for a plurality of grooves S1 to S9 to be formed on a movable mold 11 (a second mold). An adhesive agent is cast from an opening portion 3a preliminarily formed in the portion other than the lid portion 1c of the substrate 3 into a space X between a substrate 3 and a skin material 2, and the adhesive agent is made to flow from the clearance between the partitioning plates 31 to 31 into the space X between the substrate 3 and the skin material 2 of the lid portion 1c in the state that the partitioning plates 31 to 31 penetrate through slits 3b to 3b preliminarily formed on the substrate 3 to become contact with the reverse surface of the skin material 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle instrument panel including a laminate in which a plurality of resin layers are laminated, a molding method and a molding apparatus thereof, and belongs to the technical field of resin molding.

  In order to satisfy various conditions such as rigidity, durability, tactile sensation, and designability, resin molded products such as automotive instrument panels have multiple types such as a base material layer, a skin layer, and an adhesive layer that bonds them. In some cases, it is composed of a laminate composed of a resin layer.

  This instrument panel may be provided with a lid (lid) for releasing an occupant-protecting air bag into the passenger compartment, and the lid is normally configured to be opened by pressure when the air bag is deployed. Is done. Conventionally, it has been a separate member from the instrument panel body, but if it is a separate member, color and texture differences are likely to occur between the instrument panel body and the lid, and the overall design of the instrument panel is impaired. There is.

  Therefore, in recent years, the lid is sometimes formed integrally with the instrument panel. In that case, it is constituted by a plurality of grooves along the outer edge of the lid portion in the base material layer, the adhesive layer or the like on the back side of the panel so that the lid portion is separated from the instrument panel body and opened when the airbag is deployed. Tier lines may be provided.

  For example, in Patent Document 1, from the base material side of an instrument panel having a three-layer structure having a foam layer between the skin layer and the base material layer, the back side of the skin layer, the base material layer, and foaming are performed with a laser. A method is disclosed in which a plurality of grooves are formed by leaving the surface side of the skin layer by heating and melting the body layer.

  Patent Document 2 discloses a method for forming a plurality of grooves only on the back surface side of the skin layer by pressing the processing blade on the back surface side of the skin layer in a state where only the skin layer is received and set in a jig. Has been.

JP 2000-071923 A Japanese Patent Laid-Open No. 11-077713

  By the way, when the molding method described in Patent Document 1 is applied to, for example, an instrument panel composed of the base material layer, the skin layer, and the adhesive layer described above, the melted adhesive even if the groove is formed by a laser. If the air bag is deployed, the tear line breaks at the outer edge of the lid, and the break timing of the tear line may vary, which may hinder the deployment of the airbag. There is a fear.

  Moreover, in the case of the shaping | molding method of patent document 2, there exists a problem that a process blade is difficult to pass by the viscoelasticity of resin, and a process is comparatively difficult.

  Therefore, the present invention has a tear line composed of a plurality of grooves along the outer edge of the lid portion, and an instrument panel having good airbag deployability, and the panel is easily and inexpensively molded. It is an object of the present invention to provide a molding method and a molding apparatus that can perform the above process.

  In order to solve the above-mentioned problems, the present invention is configured as follows.

  First, the invention according to claim 1 of the present application (hereinafter referred to as the first invention) is an adhesive in the space between the skin material set in the first mold and the base material set in the second mold. Are molded into a plurality of layers, provided with an airbag discharge lid portion, and a plurality of grooves along the outer edge of the lid portion are provided in the injected adhesive layer and the base material layer. A method of forming an instrument panel for a vehicle provided with a configured tear line, wherein a plurality of partition plates erected on the second mold side in correspondence with the planned positions for forming the plurality of grooves, In a state where the slit formed in the base material is penetrated and brought into contact with the back surface of the skin material, a space between the base material and the skin material is formed from an opening previously formed in a portion other than the lid portion in the base material. Inject the adhesive, and the base material in the lid part from the gap between the partition plates And wherein the flowing a adhesive into the space between the skin material.

  Further, the invention according to claim 2 of the present application (hereinafter referred to as the second invention) is the first invention, wherein the plurality of partition plates erected on the second mold side are replaced with the base material as the second mold. Before being set, it is retracted so as not to protrude into the space between the first mold and the second mold, and after the base material is set in the second mold, the slit of the base material is penetrated to It protrudes to the space side.

  In the invention according to claim 3 of the present application (hereinafter referred to as the third invention), in the first invention or the second invention, a groove constituting a tear line of a side on the vehicle front side at the outer edge of the lid portion is formed. In a state where the gap between the partition plates is set larger than the gap between the partition plates forming the grooves constituting the tear lines of the other sides, the vehicle front side further than the side on the vehicle front side at the outer edge of the lid portion. It is characterized by injecting an adhesive from an opening provided at a position on the side.

  The invention according to claim 4 of the present application (hereinafter referred to as the fourth invention) includes a first mold on which a skin material is set, a second mold on which a base material is set, and a clamped state. An adhesive injection means for injecting an adhesive into the space between the base material and the skin material, and on the outer edge of the lid portion for releasing the airbag to the injected adhesive layer and the base material layer. An instrument panel molding apparatus for forming a tear line composed of a plurality of grooves along the vertical direction and corresponding to the planned positions for forming the plurality of grooves on the second mold side. In this state, it has a plurality of partition plates that are set so as to pass through slits previously formed in the base material and come into contact with the back surface of the skin material.

  Further, the invention according to claim 5 of the present application (hereinafter referred to as the fifth invention) is the fourth invention in which the plurality of partition plates erected on the second mold side are used as the second mold. Before being set, it is retracted so as not to protrude into the space between the first mold and the second mold, and after the base material is set in the second mold, the slit of the base material is penetrated to A partition plate moving means for projecting toward the space side is provided.

  Further, the invention according to claim 6 of the present application (hereinafter referred to as the sixth invention) is the fourth invention or the fifth invention, wherein a groove constituting a tear line of a side on the vehicle front side at the outer edge of the lid portion is formed. The gap between the partition plates is set to be larger than the gap between the partition plates forming the grooves constituting the tear lines of the other sides and communicates with the opening of the base material for injecting the adhesive. The mold opening of the second mold is provided at a position that is further on the front side of the vehicle than the side that is on the front side of the vehicle at the outer edge of the lid portion.

  The invention according to claim 7 of the present application (hereinafter referred to as the seventh invention) is molded into a plurality of layers by interposing an adhesive layer between the skin material and the base material, and an airbag. An instrument panel for a vehicle, provided with a discharge lid part, and provided with a tear line formed by a plurality of grooves along an outer edge of the lid part on the adhesive layer and the base material, The adhesive layer is formed from an opening formed in a portion other than the lid portion in the base material in a state where a plurality of partition plates are in contact with the back surface of the skin material through the slit formed in the base material. The adhesive is injected into the space between the material and the skin material, and the adhesive flows into the space between the base material and the skin material in the lid portion from the gap between the partition plates. And

  In the invention according to claim 8 of the present application (hereinafter referred to as the eighth invention), in the seventh invention, the gap between the grooves constituting the tear line of the side on the vehicle front side at the outer edge of the lid portion is the other than that It is characterized in that it is made larger than the gap between the grooves constituting the tear line of the side.

  In the invention according to claim 9 of the present application (hereinafter referred to as the ninth invention), in the seventh invention or the eighth invention, the skin material is provided with a notch along the outer edge of the lid portion on the back surface thereof. It is characterized by.

  In the invention according to claim 10 of the present application (hereinafter referred to as the tenth invention), in the ninth invention, the skin material comprises a skin layer and a foam layer, and the notch penetrates the foam layer and penetrates the back surface of the skin layer. It is characterized by being provided.

  Next, the effect of the present invention will be described.

  First, according to the first invention, a plurality of partition plates erected on the second mold side corresponding to the positions where the plurality of grooves are to be formed are made to penetrate through slits formed in the base material in advance. In the state of being in contact with the back surface of the material, an adhesive is injected into the space between the base material and the skin material from an opening formed in advance in a portion other than the lid portion in the base material, and from the gap between the partition plates. A simple method in which an adhesive is allowed to flow into the space between the base material and the skin material in the lid portion, and a tear line composed of a plurality of grooves can be easily bonded to the base material layer without additional post-processing. An instrument panel in the agent layer can be formed.

  Here, for example, if an opening for injecting adhesive is provided in the lid portion, the strength of the lid portion is locally reduced, and when the airbag is deployed, the opening for injecting the adhesive is not the outer edge of the lid portion. Although there is a possibility that it breaks from the vicinity and hinders the development, according to the present invention, since the opening for injecting the adhesive in the base material is formed in a portion other than the lid portion, the strength of the lid portion is increased. There is no local degradation and it becomes uniform. As a result, when the airbag is deployed, the lid portion is first broken from the tear line at the outer edge of the lid portion, and the lid portion is satisfactorily opened.

  By the way, since the instrument panel is generally composed of a curved surface, the inner surface of the mold is also composed of a curved surface. Accordingly, a plurality of partition plates are arranged in such a mold, for example, substantially orthogonal to the mold surface. If it is fixedly set up in the direction in which the partition plate is placed, the directions of the partition plates do not coincide with each other.

  However, according to the second invention, before the base material is set in the first mold, the plurality of partition plates erected on the second mold side are separated between the first mold and the second mold. Retract so that it does not protrude into the space between them, and after the base material is set in the second mold, it penetrates the slit of the base material and protrudes toward the space side. It will penetrate well.

  According to the third aspect of the invention, the gap between the partition plates that form the groove that forms the tear line of the side on the vehicle front side at the outer edge of the lid portion is formed, and the groove that forms the tear line of the other side is formed. Adhesive injection because the adhesive is injected from an opening provided at a position on the front side of the vehicle further than the side on the front side of the vehicle at the outer edge of the lid portion in a state set larger than the gap between the partition plates. Therefore, the flowability of the adhesive into the lid portion surrounded by the plurality of partition plates is improved.

  Next, according to the fourth invention, it relates to a molding apparatus corresponding to the molding method of the first invention, and the effects described in the first invention can be achieved by a molding apparatus having a simple configuration.

  Further, according to the fifth and sixth inventions, similarly, the function and effect described in the second and third inventions can be achieved by a molding apparatus having a simple configuration.

  And according to 7th invention, it is related with the instrument panel shape | molded by the shaping | molding method of 1st invention, and the shaping | molding apparatus of 4th invention, and can be shape | molded cheaply and easily with the apparatus of simple structure. it can.

  According to the eighth aspect of the invention, the gap between the grooves constituting the tear line of the side on the vehicle front side at the outer edge of the lid portion is made larger than the gap between the grooves constituting the tear line of the other side. Therefore, when the airbag is deployed, the gap between the grooves constituting the tear line of the other side is first broken, and the grooves constituting the tear line of the side that is the front side of the vehicle on the outer edge of the lid portion. The gap can be broken later, and the gap between the grooves constituting the tear line on the front side of the lid at the outer edge of the lid portion is further increased to constitute the tear line of the other side. Only between the grooves can be broken, and the grooves constituting the tear line of the side on the vehicle front side at the outer edge of the lid portion can be prevented from breaking. In other words, before and after the outer edge of the lid part, it is possible not only to shift the break timing between the grooves constituting the tear line and to favorably direct the airbag deployment direction to the occupant side, but without providing a separate hinge material or the like However, the side located on the side opposite to the occupant can be used as the hinge of the lid portion.

  And according to 9th invention, since the notch is provided in the back surface of the skin material along the outer edge of a lid part, the tearability of a tear line improves and the expandability of an airbag becomes still better. .

  Furthermore, according to the tenth invention, the skin material is composed of a skin layer and a foam layer, and the notch does not reach the skin layer surface, so that not only the tactile feel of the instrument panel is improved, Like the invention, the deployability of the airbag is further improved.

  Embodiments of the present invention will be described below.

  First, the instrument panel 1 according to the present invention will be described. FIG. 1 is a plan view (front side) of the instrument panel 1, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is an enlarged view of a portion B of FIG. The instrument panel 1 is a front part of a passenger seat in a left-hand drive specification vehicle. When the instrument panel 1 is attached to a vehicle body, an air bag (not shown) is accommodated in the space on the back side of the panel 1. ing.

  As shown in FIG. 1, the panel 1 is provided with a blower opening 1a to the passenger side on the right end side and a blower opening 1b to the front window side on the front side. . An airbag discharge lid portion 1 c is formed integrally with the panel 1 at a substantially central portion in the width direction of the panel 1.

  As shown in FIG. 3, the instrument panel 1 includes a layer of the skin material 2 constituting the front surface side (side facing the passenger compartment) of the panel 1, and a layer of the base material 3 constituting the back surface side, It is comprised with the laminated body which consists of the layer of the adhesive agent 4 which adhere | attaches these layers. The layer of the skin material 2 includes a skin layer 5 constituting the surface and a foam layer 6 made of a foam material having cushioning properties. In addition, as the skin material 2, what was shape | molded in the instrument panel shape previously by the well-known injection molding is used for the base material 3 by a well-known powder slush molding, respectively. The layer of the adhesive 4 is formed by cooling and curing a molten hot melt adhesive as a molten resin. Each layer 2, 3 and 4 is unified with a polypropylene material in order to facilitate recycling.

  On the back side (the layer side of the base material 3) of the instrument panel 1, a tear line (fracture line) configured by a plurality of grooves S1 to S9 is provided along the outer edge of the lid portion 1c. These grooves S1 to S9 penetrate the layer of the base material 3, the layer of the adhesive 4, and the foamed layer 6 of the skin material 2 and reach the surface on the foamed layer 6 side, and the foamed layer 6 and the skin layer 5 are wedge-shaped. It is said that.

  As shown in FIG. 1, among these grooves S1 to S9 constituting the tear line, the distance between the grooves S1 and S2, the gap between the grooves S2 and S3, and the grooves S3 and S4 The gap between the grooves S4 and S5, the gap between the grooves S5 and S6, the gap between the grooves S6 and S7, and the grooves S7 and S8, respectively. The gap between the grooves, the gap between the grooves S8 and S9, and the gap between the grooves S9 and S1 are d2. The interval d1 is larger than the interval d2. This is because, when the airbag is deployed, the part of the panel 1 between the groove S4 and the groove S5, the part between the groove S5 and the groove S6, the part between the groove S6 and the groove S7, the groove S7 and the groove S8. Only the part between the groove S8 and the groove S9 and the part between the groove S9 and the groove S1 are cut, and the part between the groove S1 and the groove S2, the groove S2 and the groove S3. The purpose is to prevent the part between and the part between the grooves S3 and S4 from being cut. That is, the purpose is to use the vehicle front side edge of the outer edge of the lid portion 1c as a hinge. According to this, when the airbag is deployed, the airbag is successfully deployed toward the occupant. Conventionally, in order to provide a hinge action, it has been necessary to separately provide a hinge member or the like at a portion to be supported by the hinge, but according to the present instrument panel 1, it is not necessary to provide this hinge member. .

  As shown in FIGS. 1 and 2, a nozzle 21 (described later) is inserted into the base material 3 as a material when the adhesive 4 is injected into the space between the base material 3 and the skin material 2. An insertion hole 3a is provided, and the insertion hole 3a is filled as shown in FIG. In addition, the insertion hole 3a is provided at a position on the vehicle front side of the side on the vehicle front side at the outer edge of the lid portion 1c. This is intended to prevent a local decrease in strength of the lid portion 1c due to the insertion hole provided inside the lid portion 1c. According to this, the deployability of the lid portion 1c is not adversely affected.

  Next, the shaping | molding apparatus 10 and this shaping | molding method of this instrument panel 1 are demonstrated. In addition, as the base material 3 which is a constituent material of the instrument panel 1, a material in which the slits 3b to 3b are formed in advance at the positions where the grooves S1 to S9 are to be formed is used. A groove in which V-shaped grooves 2a. These V-shaped grooves 2a... 2a penetrate the foam layer 6 and reach the skin layer 5, but do not penetrate the skin layer 5.

  As shown in FIG. 4, the molding apparatus 10 includes a movable mold 11 that is supported by a driving unit (not shown) so as to be movable in the vertical direction in FIG. 4, and a fixed mold 12 that is fixed to a support member (not shown). Having a pair of molds.

  An adhesive injection device 20 for injecting the adhesive 4 into the space X between the skin material 2 and the base material 3 is attached to the outer surface of the mold 11 via a bracket 13, and the adhesive 4 The same number of groove forming devices 30 as the grooves S1... S9 are formed to form the grooves S1.

  The adhesive injection device 20 is slidably inserted into a nozzle insertion hole 11 a as a mold opening provided in the movable mold 11, and has a nozzle 21 having an adhesive discharge port (not shown) on the distal end surface. An applicator 22 that controls the supply of the adhesive 4, a nozzle 21 and a nozzle lifting mechanism 23 that lifts and lowers the applicator 22, and an adhesive tank 24. The applicator 22 includes a pump 22a that transfers the adhesive 4 in the adhesive tank 24 to the nozzle 21 side, and an electromagnetic valve 22b that controls the supply of the adhesive 4 to the nozzle 21 side. Is composed of an air cylinder or the like. The lifting mechanism 23 may be configured using a hydraulic cylinder, an electric motor, or the like.

  The groove forming devices 30... 30 are partition plates 31... 31 slidably inserted into slits 11 b... 11 b provided in the movable mold 11 corresponding to the grooves S 1 to S 9 of the instrument panel 1. , And partition plate raising / lowering mechanisms 32... 32 for raising and lowering the partition plates 31. In addition, what is necessary is just to comprise the partition plate raising / lowering mechanism 32 using an air cylinder, a hydraulic cylinder, an electric motor. FIG. 5 is an enlarged view of portion C in FIG. As shown in FIG. 5, the tip 31a of the partition plate 31 has a wedge shape.

  As shown in FIG. 6, the molding apparatus 10 has a controller 100, which controls the applicator 22 of the adhesive injection device 20 to control the supply of the adhesive 4 to the nozzle 21, and The lifting mechanism 23 is controlled to raise and lower the nozzle 21 and the applicator 22. Moreover, the partition plate raising / lowering mechanism 32 ... 32 of the groove | channel formation apparatus 30 is controlled, and the partition plates 31 ... 31 are raised / lowered. After the molds 11 and 12 are closed, the controller 100 is connected to a start switch for starting the operation of the adhesive injection device 20 and the groove forming devices 30.

  Next, the operation of the molding apparatus 10 and the molding method will be described. In addition, as mentioned above, as the base material 3 which is a constituent material of the instrument panel 1, a material in which slits 3b ... 3b corresponding to the grooves S1 to S9 are formed in advance is used. Similarly, V-grooves 2a to 2a having a V-shaped cross section corresponding to the grooves S1 to S9 are used in advance.

  First, as shown in FIGS. 4 and 5, the molds 11 and 12 are opened, the base material 3 is set at a predetermined position on the inner surface of the mold 11, and the skin material 2 is placed at a predetermined position on the inner surface of the mold 12. set. At the time of this setting, the start switch is turned off by the operator, and the controller 100 controls the partition plate lifting mechanism 32... 32 to retract the partition plate 31... 31 into the slit 11 b of the mold 11. At the same time, the nozzle lifting mechanism 23 is controlled to retract the nozzle 21 into the nozzle insertion hole 11 a of the mold 11.

  Next, as shown in FIGS. 7 and 8, when the operator performs mold clamping of the molds 11 and 12 and then turns on the start switch, the controller 100 moves the nozzle lifting mechanism 23 of the adhesive injection device 20. The nozzle 21 is controlled to advance (lower) to the base 3 side, and the partition plate lifting mechanisms 32... 32 of the groove forming device 30 are controlled to advance (lower) the partition plates 31. . The lowering amount of the nozzle 21 is set to an amount such that the injection port at the tip thereof faces the adhesive injection space X, and the lowering amount of the partition plates 31... 31 is V of the skin material 2 at the leading end 31a. It is set to an amount that comes into contact with the groove 2a (cut).

  Next, the controller 100 controls the applicator 22 of the adhesive injection device 20 to inject the adhesive 4 into the space X from the injection hole at the tip of the nozzle 21 for a predetermined time. At this time, the injected adhesive 4 diffuses to the surroundings, but as shown by arrows in FIG. 9, a partition plate is provided in the space between the skin material 2 and the base material 3 in the lid portion 1 c. 31... Flows from the gap between 31. In this case, the gap d1 between the partition plates 31... 31 that form the grooves S1 to S4 on the vehicle front side at the outer edge of the lid portion 1c is the partition plate 31 that forms the grooves S5 to S9 on the other sides. Since the gap d2 is set larger than the gap d2, the adhesive 4 flows well into the space X between the skin material 2 and the base material 3 in the lid portion 1c. Here, the predetermined time is set to a time until the space X is substantially filled with the adhesive 4.

  Next, after the second predetermined time has elapsed after the adhesive 4 has been injected into the space X for a predetermined time, the nozzle lifting mechanism 23 of the adhesive injection device 20 is controlled to raise the nozzle 21 so that the nozzle of the mold 11 The partition plate elevating mechanism 32 of the groove forming devices 30... 30 is controlled to retreat into the insertion hole 11 a, and the partition plates 31 to 31 are raised and retracted into the slits 11 b. Here, the second predetermined time is set to a time until the injected adhesive 4 is sufficiently solidified. According to this, the adhesive 4 is solidified in a state where the adhesive 4 is not injected into the place where the partition plates 31... 31 in the space X between the base material 3 and the skin material 2 are located. That is, the slit 4a is formed in the same layer as the slit 3b of the base material 3 layer on the adhesive 4 layer, the slit 3b of the base material 3 layer, the slit 4a of the adhesive 4 layer, and the skin material 2 The instrument panel 1 having the grooves S1 to S9 including the V-shaped groove 2a of the layer is formed.

  Then, the operator opens the molds 11 and 12 and removes the molded instrument panel 1.

  As described above, according to the molding apparatus and the molding method according to the present embodiment, a plurality of erected on the movable mold 11 (second mold) corresponding to the positions where the plurality of grooves S1 to S9 are to be formed. The partition plates 31... 31 are previously formed in a portion other than the lid portion 1 c in the base material 3 in a state of passing through the slits 3 b. The adhesive 4 is injected into the space X between the base material 3 and the skin material 2 from the opened opening 3a, and between the base material 3 and the skin material 3 in the lid portion 1c from the gap between the partition plates 31. The instrument panel 1 having a tear line composed of a plurality of grooves S1... S9 can be easily formed without adding post-processing or the like by a simple method of flowing the adhesive 4 into the space X. .

  Here, for example, if an opening for injecting the adhesive is provided in the lid portion 1c, the strength of the lid portion 1c is locally reduced, and when the airbag is deployed, the adhesive is injected instead of the outer edge of the lid portion 1c. However, in the instrument panel 1 according to the present embodiment, the opening for injecting the adhesive in the base material 3 is other than the lid portion 1c. Since it is formed in the part, the strength of the lid portion 1c does not decrease locally and becomes uniform. As a result, when the airbag is deployed, it is first broken from the outer edge of the lid portion 1c, and the lid portion 1c is satisfactorily opened.

  By the way, since the instrument panel 1 is configured by a curved surface, the inner surface of the movable mold 11 is also configured by a curved surface. Accordingly, for example, a plurality of partition plates are attached to the mold surface. Therefore, since the directions of the partition plates do not coincide with each other, the partition plates cannot be penetrated into the slits 3b.

  However, according to the present embodiment, the partition plates 31... 31 are retracted into the movable mold 11 before the base 3 is set in the movable mold 11, and the base 3 is set in the movable mold 11. Then, the partition plate 31... 31 is surely and satisfactorily penetrated into the slits 3 b... 3 b of the substrate 3 because it is configured to advance to the base material 3 side and penetrate the slits 3 b. Become.

  Further, the gap d1 between the partition plates 31 ... 31 forming the grooves S1, S2, S3, S4 constituting the side tear line on the outer edge of the lid portion 1c is the grooves S4 to S9 on the other sides. The opening (nozzle insertion hole) 3a of the base material 3 for injecting the adhesive material is set in front of the vehicle at the outer edge of the lid portion 1c. The adhesive 4 from the opening 3a for injecting the adhesive into the lid portion 1c area surrounded by the plurality of partition plates 31 ... 31 is provided at a position further on the vehicle front side than the side that becomes the side. The inflow property of is good.

  In addition, the above-described effects can be achieved with the molding apparatus 10 having a simple configuration.

  As a result, the instrument panel 1 can be formed easily and inexpensively.

  Further, as described above, the gap d1 between the grooves S1 to S4 constituting the tear line of the side on the vehicle front side at the outer edge of the lid portion 1c is between the grooves S5 to S9 constituting the tear line of the other side. By setting the gap larger than the gap d2, when the airbag is deployed, the grooves S5 to S9 constituting the tear lines of the other sides are first broken, and the vehicle front side at the outer edge of the lid portion 1c. Between the grooves S1 to S4 that constitute the tear line of the side that becomes the rear, the grooves S1 to S4 that constitute the tear line of the side that becomes the vehicle front side at the outer edge of the lid portion 1c can be broken. By further increasing the gap, only the grooves S5 to S9 on the other sides can be broken, and the grooves S1 to S4 on the front side of the vehicle can be prevented from breaking. . That is, before and after the outer edge of the lid portion 1c, not only can the break timing between the grooves S1 to S9 constituting the tear line be shifted so that the airbag deployment direction can be favorably directed toward the occupant side, but a separate hinge material Even if it is not provided, the side located on the side opposite to the occupant can be used as the hinge of the lid portion 1c.

  Further, since the V-shaped groove (cut) 2a is provided on the back surface of the skin material 2 along the outer edge 1c of the lid portion, the tear line breakability is improved and the deployability of the airbag is further improved. Become.

  Furthermore, the skin material 2 is composed of a skin layer 5 and a foam layer 6, and the V-shaped groove (cut) 2 a does not reach the surface of the skin layer 5, so that the feel of the instrument panel 1 is improved. In addition, the deployability of the airbag is further improved.

  Here, FIG. 11 shows an example of changing the shape of the tip of the partition plate. That is, the front end portion 31b 'of the partition plate 31' ... 31 'penetrating the movable mold 11' is flat, and a notch 2a 'is formed at a portion corresponding to the front end portion 31b' in the skin material 2 '. Is provided. This notch 2a 'is formed in advance before setting the skin material 2' to the fixed mold 12 ', and penetrates through the foam layer 6' of the skin material 2 'to reach the skin layer 5'. There is no penetration. Then, when the adhesive 4 'is injected into the space X', as shown in FIG. 12, perforated grooves along the outer edge of the lid portion are formed in the base 3 'and adhesive 4' layers. An instrument panel 1 'having S' is formed.

  The present invention can be widely applied to vehicle instrument panels and molding thereof.

It is a top view (surface side) of the instrument panel which concerns on embodiment of this invention. It is sectional drawing by the AA line of FIG. FIG. 3 is an enlarged view of a portion B in FIG. 2. It is principal part sectional drawing of the shaping | molding apparatus which concerns on embodiment of this invention (state which opened the type | mold). FIG. 5 is an enlarged view of a portion C in FIG. 4. It is a control block diagram of this shaping | molding apparatus. It is principal part sectional drawing of this shaping | molding apparatus (state which closed the type | mold). FIG. 8 is an enlarged view of a portion D in FIG. 7. It is sectional drawing by the EE line of FIG. FIG. 9 is a view corresponding to FIG. 8 after the adhesive is injected into the adhesive injection space. It is principal part sectional drawing equivalent to FIG. 8 of another shaping | molding apparatus. It is sectional drawing equivalent to FIG. 3 of the instrument panel shape | molded by the other shaping | molding apparatus.

Explanation of symbols

1, 1 'instrument panel 2, 2' skin material 2a, 2a 'V-shaped groove, notch 3, 3' substrate 3b, 3b 'slit 4, 4' adhesive 5, 5 'skin layer 6, 6' foam Layer 10 Molding device 11, 11 'Movable mold (second mold)
12, 12 'fixed mold (first mold)
31 ... 31, 31 '... 31' Partition plate 32 ... 32 Partition plate moving mechanism (partition plate moving means)
S1-S9, S 'groove X, X' Adhesive injection space

Claims (10)

A plurality of layers are formed by injecting an adhesive into the space between the skin material set in the first mold and the base material set in the second mold, and an airbag discharge lid is provided. And a method for molding an instrument panel of a vehicle, wherein a tear line composed of a plurality of grooves is provided along the outer edge of the lid portion in the injected adhesive layer and the base material layer, In a state where a plurality of partition plates erected on the second mold side corresponding to the planned formation positions of the plurality of grooves are in contact with the back surface of the skin material through the slits formed in the base material in advance. The adhesive is injected into the space between the base material and the skin material from an opening formed in advance in the portion other than the lid portion in the base material, and the base material and the skin material in the lid portion from the gap between the partition plates A vehicle characterized by allowing an adhesive to flow into a space between Instrument panel molding method. The plurality of partition plates erected on the second mold side are retracted so as not to protrude into the space between the first mold and the second mold before the base material is set in the second mold. 2. The vehicle instrument panel forming method according to claim 1, wherein after the base material is set in the second mold, the slit of the base material is passed through and protruded toward the space side. The gap between the partition plates that form the groove that forms the tear line of the side that is the front side of the vehicle on the outer edge of the lid portion is set larger than the gap between the partition plates that form the groove that forms the tear line of the other side. 3. The adhesive according to claim 1, wherein an adhesive is injected from an opening provided at a position on the vehicle front side further than a side on the vehicle front side in the outer edge of the lid portion. Instrument panel forming method for a vehicle. A first mold on which the skin material is set, a second mold on which the base material is set, and an adhesive injection means for injecting an adhesive into the space between the base material and the skin material in a clamped state And an instrument panel molding apparatus for forming a tear line composed of a plurality of grooves along the outer edge of the airbag discharge lid portion in the injected adhesive layer and the base material layer. In addition, it is erected on the second mold side corresponding to the position where the plurality of grooves are to be formed, and in a state where the mold is clamped, it passes through a slit previously formed in the base material and contacts the back surface of the skin material. An instrument panel forming apparatus for a vehicle, comprising: a plurality of partition plates set so as to contact each other. The plurality of partition plates erected on the second mold side are retracted so as not to protrude into the space between the first mold and the second mold before the base material is set in the second mold. 5. The vehicle according to claim 4, further comprising partition plate moving means for causing the slit of the base material to pass through and protruding toward the space after the base material is set in the second mold. Instrument panel molding equipment. The gap between the partition plates that form the groove that forms the tear line of the side that is the front side of the vehicle on the outer edge of the lid portion is set to be larger than the gap between the partition plates that form the groove that forms the tear line of the other side. And the second mold opening that communicates with the opening of the base material for injecting the adhesive is located further on the vehicle front side than the side on the vehicle outer side on the outer edge of the lid portion. The instrument panel forming apparatus for a vehicle according to claim 4, wherein the instrument panel forming apparatus is provided in the vehicle. An adhesive layer is interposed between the skin material and the base material to form a plurality of layers, an airbag discharge lid portion is provided, and the lid is provided on the adhesive layer and the base material. An instrument panel of a vehicle provided with a tear line composed of a plurality of grooves along the outer edge of the part, wherein the adhesive layer penetrates a plurality of partition plates through slits formed in the base material. The adhesive injected into the space between the base material and the skin material from the opening formed in the portion other than the lid portion in the base material in a state of being in contact with the back surface of the skin material, and the partition plates An instrument panel for a vehicle, which is molded from an adhesive that flows into a space between a base material and an outer skin material in a lid portion from a gap of the lid. The gap between the grooves constituting the tear line of the side on the vehicle front side at the outer edge of the lid portion is made larger than the gap between the grooves constituting the tear line of the other side. The instrument panel of the vehicle described in 1. The vehicle instrument panel according to claim 7 or 8, wherein the skin material is provided with a cut along the outer edge of the lid portion on the back surface thereof. The vehicle instrument panel according to claim 9, wherein the skin material includes a skin layer and a foam layer, and the cut is provided through the foam layer to the back surface of the skin layer.

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