JPH11268597A - Method and device for manufacturing vehicular interior trim material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the manufacturing cost of a vehicular interior trim material by a method wherein the interior trim material having structure that a skin material is stuck on a base member is properly manufactured by a simple constitution manufacturing device. SOLUTION: A manufacturing device for a vehicular interior trim material comprises an adhesive coating device 1 to coat an adhesive (m) on a part of the surface of a base member 9; a skin material containing device 3 to adhere a skin material 95 on the surface of a base member 9 through the adhesive (m) after the adhesive coated on the base member is heated; and a surface setting device 2 having a jig 20 for a surface setting having a down protrusion edge part for surface setting in a recessed groove, formed in the surface of the base member 9, for a part of the skin material 95. In this case, the surface setting device 2 is provided with a hot air feeding means 4 to feed hot air to a part surrounded with the down protrusion edge part of the jig 20 for surface setting. The surface setting device 2 is further functioned as a heating device to heat the adhesive (m).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the manufacture of vehicle interior materials such as automobile door trims, quarter trims (trims for covering a panel portion without a side door on the side of a seat), or instrument panels. More specifically, the present invention relates to a technique for manufacturing an interior material for a vehicle by attaching a skin material such as a cloth exhibiting a decorative effect to a surface of a predetermined base member.

[0002]

2. Description of the Related Art Conventionally, a door trim for an automobile is manufactured by the following steps, for example, as described in Japanese Patent Application Laid-Open No. Hei 2-305626. That is, in order to manufacture the door trim, first, a so-called skin material adhering operation of bonding a skin material to a surface of a base member which is a main part of the door trim is performed. Then, after unnecessary portions of the skin material are removed by cutting the skin material into a predetermined shape using a heating blade, the outer peripheral edge of the skin material is cut into a concave groove provided in advance on the surface of the base member. Wood grain. According to such a series of working steps, it is possible to obtain a door trim in which the skin material is stuck on the surface of the base member in a state where the outer peripheral edge of the skin material is well-grained into the concave groove of the base member. As a result, the sense of grade of the entire door trim can be enhanced.

On the other hand, in order to attach the skin material to the base member, it is necessary to apply an adhesive to the surface of the base member as a pre-process. Since the base member is usually made of synthetic resin and the skin material is usually made of cloth different from the base member, it is necessary to use an adhesive capable of firmly adhering these foreign members as the adhesive. . Therefore, conventionally, a chloroprene-based adhesive containing an organic solvent has been generally used as the adhesive. However, in order to exert a strong adhesive force on the chloroprene-based adhesive, it is necessary to volatilize the solvent of the adhesive and dry it in advance. It is necessary to actively heat the area where the is applied. Therefore, conventionally, a step of applying an adhesive to the base member and a heating step of drying the adhesive have been performed as steps prior to the step of attaching the skin material to the base member. In addition, as a facility for performing such a process, an adhesive application device and a heating device dedicated to the process are separately provided in front of a sticking device, a wood graining device, and the like.

[0004]

However, conventionally, there are the following problems to be solved.

That is, the conventional door trim manufacturing apparatus not only includes an adhesive application device, a sticking device, and a wood graining device, but also includes a dedicated heating device for drying the adhesive. For this reason, conventionally, the whole manufacturing apparatus becomes very large, and there has been a problem that the equipment cost is high. Also, if such expensive equipment is used, the manufacturing cost of the door trim is inevitably increased. Therefore, conventionally, there has been a problem to be solved in such a point.

[0006] In particular, conventionally, a chloroprene-based adhesive containing an organic solvent is used as the adhesive, but the organic solvent is harmful to the human body. For this reason, it is necessary to provide a local discharge device for forcibly exhausting and processing the volatile components of the organic solvent in the work space for applying the adhesive. In addition, as a heating device for drying the chloroprene-based adhesive, it is necessary to use a special drying furnace capable of preventing leakage of volatile components of harmful organic solvents. Therefore, conventionally, the equipment cost of the entire apparatus has been further increased by the necessity of using such a special local discharge device and drying oven. In addition, conventionally, there is a method of using a so-called two-component curing type adhesive of urethane instead of the chloroprene-based adhesive, but such a two-component curing type adhesive has two types of adhesives. Because of the necessity of handling, the application work and the like become considerably complicated as compared with the case of the chloroprene-based adhesive. Therefore, even if such an adhesive is used, it has been difficult to simplify the configuration of the entire equipment and reduce the equipment cost.

The present invention was conceived in view of such circumstances, and a vehicle interior material having a structure in which a skin material is adhered to a base member can be appropriately formed by a manufacturing device having a simple structure. It is an object of the present invention to make it possible to manufacture the vehicle interior material and thereby reduce the manufacturing cost of the interior material for a vehicle.

[0008]

DISCLOSURE OF THE INVENTION In order to solve the above problems, the present invention employs the following technical means.

That is, according to a first aspect of the present invention, there is provided a method of manufacturing an interior material for a vehicle. The method for manufacturing an interior material for a vehicle includes an adhesive application step of applying an adhesive to a part of the surface of the base member, a heating step of heating the adhesive applied to the base member, and a surface of the base member. A skin material attaching step of bonding the skin material through the adhesive, and a wood graining jig having a downwardly protruding edge portion which can be fitted into a concave groove formed on the surface of the base member. A wood graining step of graining a part of the skin material into the concave groove, and a method of manufacturing a vehicle interior material having a wood graining jig used in the wood graining step in the heating step. The method is characterized in that a portion on which the adhesive is applied is masked and hot air is supplied to the masked portion.

In the present invention, the following effects can be obtained.

First, according to the present invention, in the heating step of heating the adhesive applied to the surface of the base member, the portion to which the adhesive is applied is masked using a wood grain jig. Because the hot air is supplied to the portion, the adhesive is applied unlike the case where the hot air is vaguely supplied to the surface of the base member without, for example, masking the surface of the base member at all. Hot air can be efficiently supplied to the portion, and the efficiency of the heating operation of the adhesive can be increased. As a result, it is possible to shorten the heating operation time and save energy consumption required for generating hot air. Furthermore, since the wood grain jig can also prevent the hot air from acting on the area of the surface of the base member where the adhesive is not applied, the portion of the surface of the base member where the skin material is not stuck is hot air. It is also possible to avoid being damaged by the heat of. As described above, in the present invention, various excellent effects can be obtained by masking the portion where the adhesive is applied in the heating step of the adhesive.

Second, in the present invention, the masking is performed by using a wood grain jig used in the wood grain step. That is, the wood grain jig is also used as a mask for the heating step. Therefore, in the present invention, the wood graining device can also be used as a heating device simply by providing a simple means for providing the wood graining device with the hot air supply means. Need not be additionally provided. As a result, in the invention of the present application, the configuration of the entire manufacturing apparatus can be simplified and the scale can be reduced, and the equipment cost can be reduced by the amount of eliminating the dedicated heating apparatus. The special effect that the manufacturing cost of the manufactured vehicle interior material can be reduced can be obtained.

It is to be noted that the wood-groove concave grooves provided on the base member are generally annular, and when an adhesive is applied to the base member, the area surrounded by the annular concave grooves is not limited. Apply adhesive to On the other hand, since the wood grain jig is for wood graining a part of the skin material into the above-mentioned groove, the wood grain jig has a shape corresponding to the plan view shape of the above groove. Therefore, by using this wood grain jig, it is possible to accurately cover the adhesive applied to the portion surrounded by the annular groove,
This is optimal for performing masking for efficiently heating the adhesive application area with the minimum necessary during heating.

In a preferred embodiment of the present invention, the adhesive may be a hot melt. This hot melt is, for example, an adhesive obtained by adding polybutene or an adhesive to polypropylene as a main component,
It cures at room temperature and has no tackiness, but exhibits strong tackiness when softened by heating. Therefore, if the hot melt is heated and softened after the hot melt is applied to the base member, then the skin material can be firmly adhered to the surface of the base member via the hot melt.

When a hot melt is used as an adhesive, unlike a conventional chloroprene-based adhesive, components that are harmful to the human body do not volatilize during handling, and the work site can be used in a favorable environment. Can be In addition, forcibly exhausting volatile components harmful to the human body,
Alternatively, since equipment for preventing the volatile component from diffusing to the outside can be made unnecessary, there is also obtained an advantage that the configuration of the entire manufacturing apparatus can be further simplified and the equipment cost can be further reduced.

According to a second aspect of the present invention, there is provided an apparatus for manufacturing an interior material for a vehicle. The apparatus for manufacturing an interior material for a vehicle includes an adhesive application device for applying an adhesive to a part of the surface of the base member, and an adhesive application device for applying the adhesive applied to the base member to the base member after the adhesive applied to the base member is heated. A skin material sticking device for bonding a skin material to the surface via the adhesive, and a downward protruding edge for graining a part of the skin material into a groove formed in the surface of the base member A wood graining device having a wood graining jig provided with a part, and a vehicle interior material manufacturing device having the wood graining device, wherein the wood graining device includes a part surrounded by a downward projecting edge of the wood grain jig. A hot air supply means capable of supplying hot air is provided, and the wood graining device is characterized in that it also serves as a heating device for heating the adhesive.

In the vehicle interior material manufacturing apparatus provided by the second aspect of the present invention, an adhesive is applied to the surface of the base member using an adhesive application device, and then the wood grain included in the wood grain device is provided. By surrounding the portion where the adhesive is applied by the downwardly protruding edge of the jig, the portion is masked, and hot air is supplied from the hot air supply means to the masked portion, whereby the above-mentioned portion is masked. The adhesive can be efficiently and appropriately heated. Next, after the skin material is laid on the base member using the skin material laying device, a part of the skin material may be cut into the concave groove of the base member by using the wood grain jig again. it can. Therefore, according to the vehicle interior material manufacturing apparatus provided by the second aspect of the present invention, the vehicle interior material manufacturing method provided by the first aspect of the present invention can be appropriately performed. The same effects as obtained by the first aspect of the present invention can be expected.

In a preferred embodiment of the present invention, the wood graining device is provided between the adhesive coating device and the skin material stretching device so as to be adjacent to the adhesive application device and the skin material stretching device, respectively. It can be a configuration that is arranged.

According to such a configuration, after the operation of applying the adhesive to the base member using the adhesive applying device is completed, the base member is removed from the heating device disposed adjacent to the adhesive applying device. The adhesive can be heated by being supplied to the combined wood graining device. Then, when the heating operation is completed, the base member is supplied to the skin material application device located next to the wood graining device, and then the skin material application operation is performed. Thereafter, the base member is also located next to the skin material application device. The base member may be returned to the original graining device, and graining work of the skin material may be performed.
Therefore, there is little waste in transferring the base member to each of the adhesive application device, the wood graining device also serving as the heating device, and the skin material sticking device, which is preferable in increasing the work efficiency of a series of manufacturing operations. .

In another preferred embodiment of the present invention,
The above-mentioned adhesive application device can be configured to apply an adhesive dropped from a discharge nozzle to a desired position while dispersing the adhesive around the periphery with air spirally spiraling.

According to such a configuration, the adhesive can be spirally applied to a predetermined position on the surface of the base member by the guide action of the air spirally spiraling. The adhesive application operation can be performed without securing masking accuracy (positioning accuracy) and using masking. In addition, the adhesive can be applied in a form that is appropriately dispersed by the action of air that spirals spirally, making it easier to finish the thickness of the adhesive coating film to an appropriate size and reducing waste of adhesive. In addition, the amount of adhesive applied to each part can be made uniform.

The features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

First, specific examples of a base member and a skin material, which are parts for manufacturing a door trim as an example of an interior material for a vehicle, will be described to facilitate understanding of the contents of the present embodiment.

FIG. 1A is a schematic plan view showing an example of the base member 9, and FIG. 1B is a sectional view taken along line II of FIG.
It is sectional drawing. The base member 9 is a member that forms a main part of the door trim, and is entirely formed of resin using a mold. On the surface of the base member 9, there is provided a narrow groove 90 connected in a ring shape. This concave groove 90
Is for graining the skin material. Although not shown in FIG. 1, the surface of the base member 9 is provided with a projection serving as an armrest, a hole for inserting an operation handle for raising and lowering the window glass, and the like.

FIG. 2A is a schematic plan view showing an example of the skin material 95, and FIG. 2B is a sectional view taken along the line II-II of FIG. The skin material 95 is used to enhance the grade of the door trim, and is made of, for example, a rectangular cloth in a plan view. However, this skin material 95
Is cut into a predetermined shape after being attached to the base member 9 as described later.

Next, an example of an apparatus for manufacturing a vehicle interior material according to the present invention will be described.

FIG. 3 is a front view showing an example of a schematic configuration of the entire apparatus for manufacturing a vehicle interior material according to the present invention.

The vehicle interior material manufacturing apparatus A shown in FIG.
The apparatus includes an adhesive application device 1, a wood graining device 2, and a skin material sticking device 3. As will be described later, the wood graining device 2 also serves as a heating device, and the wood graining device 2 is provided with a perforation device 5 for perforating the skin material 95. Further, the skin material sticking device 3 is provided with a cutting device 7 for cutting the skin material 95 into a predetermined shape.

The adhesive application device 1 is a device for applying, for example, a hot melt mainly composed of polypropylene to the surface of the base member 9. A jig 80a for supporting the base member 9 is placed. The adhesive application device 1 has a configuration in which a discharge nozzle 10 for discharging hot melt in a heated and molten state is supported by an arm 12, and the arm 12 moves in various directions programmed in advance. Accordingly, hot melt can be applied to a desired area on the surface of the base member 9 by a so-called robot operation.
The adhesive coating device 1 includes a storage tank with a heater for storing an appropriate amount of hot melt in a heated and molten state,
A pump (all not shown) for feeding hot melt from the storage tank to the discharge nozzle 10 is provided.

As the discharge nozzle 10, for example, a nozzle having an air discharge port around a discharge port for dropping hot melt is used. The discharge nozzle 10 discharges air spirally from the air discharge port. Has become. If the discharge nozzle 10 having such a configuration is used, this discharge nozzle 1
The hot melt dropped from No. 1 can be applied to the surface of the base member 9 while being appropriately dispersed by spiral air. If the hot melt is sprayed simply in a mist state, the position where the hot melt is applied cannot be accurately controlled, and if it is dropped in a so-called bead shape, the consumption of the hot melt causes a problem that the consumption becomes large. If the ejection nozzle 10 having the configuration is used, such difficulties can be appropriately avoided.

The wood graining device 2 is disposed between the adhesive applying device 1 and the skin material sticking device 3 so as to be adjacent to the two devices. The wood graining device 2 is provided with a support table 91 for supporting a jig 80b for supporting the base member 9.
The support table 91 is capable of reciprocating in the horizontal direction indicated by an arrow N1.
It can be moved and arranged at any of the position and the skin material attaching device 3. As will be described later, the tilt angle of the support table 91 can be arbitrarily changed (see FIGS. 11 to 13).

The graining device 2 comprises a graining jig 2
0 is provided. The wood graining jig 20 is supported by the rod 81 a of the reciprocating cylinder 81 supported on the ceiling portion of the fixed frame 99 and the distal ends of the elevating guide rods 82, 82, and can be raised and lowered by the operation of the reciprocating cylinder 81. It is.

FIG. 4 is a schematic front view of a main part of the graining device 2. As shown in FIG. FIG. 5 is a sectional view taken along line VV of FIG. FIG.
FIG. 6 is a sectional view taken along line VI-VI of FIG. 4. FIG. 7 shows VII- of FIG.
It is VII sectional drawing.

As shown in FIG.
Numeral 0 has a hood-like overall configuration, and has a configuration in which a cylindrical first peripheral wall plate 22 is provided on the lower surface of a substantially horizontal ceiling plate 21. The downward protruding edge portion 22 a of the lower end portion of the first peripheral wall plate 22 is a portion used for graining the skin material 95 into the concave groove 90 of the base member 9. Therefore, as is clearly shown in FIG. 7, the cross-sectional shape and the size of the first peripheral wall plate 22 in plan view are substantially the same as the groove 90 for cutting the base member 9 shown in FIG.

A box-shaped pipe auxiliary member 42 is provided above the wood grain jig 20. A warm air inlet 42 a and a hot air outlet 42 of the pipe auxiliary member 42 are provided.
b is connected to the hot air supply device 4 including the blower 4A and the heater 4B via pipes 40a and 40b. A duct 23 for guiding and blowing hot air is provided inside the wood grain jig 20. The duct 23 communicates with the inside of the pipe auxiliary member 42. However, in the pipe auxiliary member 42, the opening 24 of the duct 23 is opened and closed to open and close the pipe auxiliary member 42.
A damper 43 is provided as a switching valve for switching the flow direction of the warm air supplied to the inside.

More specifically, the damper 43 is provided with the structure shown in FIG.
When the posture is set to the position shown by the solid line, the warm air supplied from the warm air supply device 4 into the pipe auxiliary member 42 passes through the opening 24 as it is, and flows into the duct 23. On the other hand, when the damper 43 is set to the position shown by the solid line in FIG. 8, the opening 24 is closed, while the warm air inlet 42 a and the warm air outlet 42 b in the pipe auxiliary member 42 are closed. To communicate between Therefore, in such a state, the wood grain jig 2 is
0 is returned to the hot air supply device 4 via the pipe 40b without flowing into the duct 23,
Hot air will circulate. With such a configuration,
In normal times, the hot air is circulated through a fixed path. On the other hand, when necessary, the circulating hot air can be immediately flowed into the duct 23 and blown out by simply switching the damper 43.

In FIG. 4, the duct 23 is supplied with warm air flowing into the duct 23 through a wood grain jig 20.
Are provided with a plurality of downwardly trumpet-shaped hot air blowing nozzles 23a to 23c for blowing downward. In addition, the opening 2 at the tip of each of these nozzles 23a to 23c
Below these opening portions 23a 'to 3a' to 23c ',
Shielding plates 26a to 26c for blocking warm air blown downward from 23c 'are provided. These shielding plates 2
6a to 26c are for appropriately dispersing the warm air blown out from the openings 23a 'to 23c'.

The first jig 20 has a cylindrical first shape.
Openings 23a 'to 23c' of the bottom of peripheral wall plate 22
A substantially horizontal bottom plate portion 25 for closing an area excluding the above is provided. The bottom plate 25 is provided with the wood grain jig 20.
Is formed near the surface of the base member 9 indicated by the imaginary line in FIG. 4 to form a space S for hot air circulation having an appropriate height above the surface of the base member 9. 1
The peripheral wall plate 22 is provided so as to be located above the distal end portion of the lower end by an appropriate dimension L. In addition, the first peripheral wall plate 2
Outside the second peripheral wall plate 22, a second peripheral wall plate 28 for forming a hot air flow passage 27 communicating with the warm air discharge port 42 b of the pipe auxiliary member 42 is provided around the first peripheral wall plate 22. . In the vicinity of the lower end of the first peripheral wall plate 22, a plurality of holes 29 for communicating the space S with the hot air flow passage 27 are provided. Therefore, the warm air flowing through the space S passes through the plurality of holes 29 and flows into the warm air flow passage 27, reaches the warm air outlet 42b of the pipe auxiliary member 42, and then passes through the pipe 40b. And is returned to the hot air supply device 4 via.

As clearly shown in FIG. 6, a drilling device 5 is provided inside the wood grain jig 20. The piercing device 5 includes a rod 50 of a reciprocating cylinder 50.
The reciprocating cylinder 50 is fixedly attached to the upper part of the wood grain jig 20 via a suitable bracket 52, with a heating blade 51 attached to the distal end of a.
The heating blade 51 has a built-in heater for heating, and the edge of the tip is formed in a sharp shape. As shown in FIG. 7, the perforating apparatus 5 is provided so that each part such as the heating blade 51 does not unduly interfere with the nozzles 23 a to 23 c of the duct 23. The bottom plate portion 25 is provided with a through hole 25a through which the heating blade 51 passes when the heating blade 51 moves down in the direction of arrow N3.

The wood grain jig 20 is detachably attached to an elevating plate 83 supported by a reciprocating rod of the reciprocating cylinder 81 via a suitable connecting member 84. By doing so, it is sufficient to replace only the wood grain jig 20 with another wood grain jig in accordance with the type change of the door trim to be manufactured, which facilitates the setup change work.

FIG. 9 is a sectional view of a main part of the skin material sticking device 3. As shown in FIG. FIG. 10 is a cross-sectional view of a main part showing an operation state of the skin material sticking device 3. FIG. 11 corresponds to FIG.
It is XI-XI sectional drawing. FIG. 12 is a cross-sectional view of a main part showing an operation state of the skin material sticking device 3. FIG. 13 is a sectional view of a main part showing an operation state of the cutting device 7 provided in the skin material sticking device 3.

In FIG. 9, the above-mentioned skin material sticking device 3
Is a skin material support table 6 for supporting the skin material 95.
And jigs 30 and 31 for attaching the skin material. The skin material sticking device 3 is also provided with a cutting device 7 for cutting the skin material 95.

The skin material supporting table 6 is a substantially rectangular table in plan view having an opening 60 at the center, and a skin material 95 having a rectangular shape in plan view is provided on the upper surface of the periphery of the opening 60. Clamper 61 for detachably clamping the outer peripheral edge
Are provided in an appropriate number. The clamper 61 is provided so as to be able to reciprocate between a forward position approaching the peripheral edge of the opening 60 and a retreat position moving away from the peripheral edge of the opening 60 by the operation of the cylinder 63, for example. The skin material support table 6
Is supported so as to be able to move up and down, but is urged upward by an air damper 62, as best seen in FIG. That is, the skin material support table 6 is normally urged upward by the air damper 62 so that the support table 91 supporting the jig 80b is moved from the wood graining device 2 as shown in FIG. When the jig 80b and the base member 9 are horizontally moved to the skin material application device 3 side, an appropriate gap H is formed below the skin material support table 6 so that the jig 80b and the base member 9 can be arranged. On the other hand, as shown in FIG. 10, the air damper 62 lowers the skin material support table 6 when the skin material support table 6 is pushed downward by push rods 33, 33 described later. Only a fixed stroke La is allowed, and a longer stroke exerts resistance so that the skin material support table 6 does not descend.

The jigs 30 and 31 for attaching the skin material
Is a jig for pressing the skin material 95 supported substantially horizontally by the skin material support table 6 against the surface of the base member 9. The jig 30 has a cross-sectional shape substantially similar to the cross-sectional shape of the surface of the base member 9. On the other hand, the jig 31 is a so-called core,
This is for partially pressing a predetermined area of the skin material 95 downward.

The jigs 30 and 31 for attaching the skin material
Is provided so as to be able to ascend and descend so that the skin material 95 can be pressed downward, and its driving mechanism is as follows.
That is, the first elevating plate 32 is connected to the rod 84a of the first reciprocating cylinder 84 supported on the ceiling portion of the fixed frame 99 and the tip of each of the elevating guide rods 85, 85. 32, push rods 33, 33 which come into contact with the upper surface of the skin support table 6 so as to lower the skin support table 6 by a predetermined stroke La when the first lifting plate 32 is lowered. I have. In addition, a second lifting plate 34 is connected to a lower portion of the first lifting plate 32 via second reciprocating cylinders 86, 86. The jig 30 is fixedly attached to the second lifting plate 34. Therefore, the jig 30
Are the first reciprocating cylinder 84 and the second reciprocating cylinders 86 and 8
6 can move up and down in a so-called two-stage manner. On the other hand, the jig 31 is connected to the second lifting plate 3.
4 is supported by a third reciprocating cylinder 87 attached to the cylinder 4. Therefore, the jig 31 can move up and down independently of the jig 30 by the operation of the third reciprocating cylinder 87, and can move up and down in a so-called three-stage manner.

The cutting device 7 includes one or more blades 7 formed in a shape surrounding the entire outer peripheral side surface of the jig 30.
And a fourth reciprocating cylinder 88 for moving the blade 70 up and down relative to the jig 30. The blade body 70 is formed in a shape and a size that allows the skin material 95 attached to the surface of the base member 9 to be cut at a position slightly outside the groove 90 for cutting wood. Further, the blade body 70 is a heating blade capable of smoothly cutting the skin material 95 even if the skin material 95 is made of cloth. As a means for using the blade body 70 as a heating blade, instead of a means for separately attaching an electric heater to the blade body 70, a means for directly supplying an electric current to the metal blade body 70 and causing the blade body 70 itself to generate heat. May be used. By adopting such means, unlike the case where the electric heater is separately provided, the blade body 70
Can be prevented from generating a temperature gradient at each of the points, and the temperature of the cutting edge portion can be efficiently increased.

Next, a method for manufacturing a door trim using the above-described vehicle interior member manufacturing apparatus A will be described.

In FIG. 3, first, a hot melt m is applied to the surface of the base member 9 set on the jig 80a of the adhesive application device 1. The application of the hot melt m is performed on a portion of the surface of the base member 9 to which the skin material 95 is to be attached, that is, a portion surrounded by the annular groove 90. Since the hot melt m does not contain volatile components harmful to the human body, it is not necessary to provide a local discharge device in the adhesive coating device 1, and the environment around the work site can be maintained in a good atmosphere. it can.

Next, after the hot melt m is applied, the base member 9 is attached to the wood graining device 2 which is also used as a heating device.
Then, the hot melt m is heated. The hot melt m is applied to the surface of the base member 9 in a heated and melted state in the adhesive application device 1, but at the time of being applied to the surface of the base member 9, its temperature is reduced and the adhesive is lost. Will be For this reason, in order to exert sufficient adhesive force on the hot melt m, it is necessary to actively heat the hot melt m applied to the base member 9.

When the hot melt m is heated in a state where the hot air generated by the hot air supply device 4 is circulated through a predetermined path (see FIG. 8), first, as shown in FIG. The jig 20 is lowered to approach the surface of the base member 9. As a result, the portion to which the hot melt m has been applied is moved to the first grain of the wood grain jig 20.
Masking can be performed by the inward protruding edge portion 22a of the peripheral wall plate 22. Since the protruding edge portion 22a has a shape that matches the shape of the concave groove 90 of the base member 9 in plan view, the hot melt m applied to the inner region of the concave groove 90 is formed.
This is extremely convenient for masking. Next, by operating the damper 43 of the pipe auxiliary member 42 to open the opening 24 of the duct 23, the hot air generated by the hot air supply device 4 is drawn into the duct 23, and each of the nozzles 23a to 23c. Opening 23 at the tip of
a 'to 23c'.

The warm air blown out from the openings 23a 'to 23c' once collides with the shielding plates 26a to 26c, and then forms a space formed between the bottom plate 25 and the coating layer of the hot melt m. S moves along the surface of the hot melt m. Therefore, only a part of the hot melt m is not intensively heated, and the hot air blown into the space S efficiently touches the surface of each part of the hot melt m. As a result, the heating efficiency of the hot melt m can be increased, and the hot melt m can be heated and softened to a predetermined state in a short time. In particular, the blowing operation of the hot air is performed by circulating the hot air in a predetermined path in advance.
Since the hot air that has been supplied to the inside of the hot melt 2 is performed by switching the damper 43, the blowing operation of the hot air maintained at the predetermined temperature is quickly performed, and the hot melt m The time required for heating can be further reduced.

The warm air is, for example, 110 ° C. to 130 ° C.
Although it is about ° C., the hot air is not unduly blown to a portion that is not masked by the wood grain jig 20, that is, a portion of the surface of the base member 9 where the hot melt m is not applied. Therefore, it is possible to avoid that the grain pattern (emboss pattern) formed on the surface of the base member 9 becomes unclear due to the influence of the heat of the warm air, for example. The air blown into the space S and used for heating the hot melt m passes through the holes 29 and flows into the hot air flow passage 27, and is returned to the hot air supply device 4 via the pipe 40b. , Will be reused. Therefore, by circulating and using the air having the residual heat, it is possible to reduce the energy consumption required for producing hot air having a predetermined temperature. After the hot melt m is sufficiently heated, the damper 43 is switched so that the wood grain jig 2 is turned on.
The blowing operation of the warm air from 0 is stopped, and the wood grain jig 20 is raised to separate from the base member 9.

Next, the skin material 9 is placed on the base member 9.
5 work is carried out. This digging work is done with jig 8
0b with the base member 9 set on
As shown in FIG. 9, the support table 91 is moved from the wood graining device 2 into the skin material sticking device 3 and the base member 9 is arranged below the skin material supporting table 6. At that time, the skin material support table 6 has been raised to a predetermined height by the urging force of the air damper 62, and is set at a position higher than the base member 9 by an appropriate dimension H. Therefore, the work of disposing the support table 91 and the jig 80b below the skin material support table 6 can be performed smoothly. When setting the skin material 95 on the skin material support table 6,
A receiving plate 89 for receiving the skin material 95 may be arranged below the skin material support table 6. That is, the work of setting the skin material 95 on the skin material support table 6 is performed, for example, manually, but the skin material support table 6 has a hollow frame shape, and
Since 5 is made of a soft cloth, it is difficult to directly put the skin material 95 on the skin material support table 6 and perform a clamping operation on the outer peripheral edge thereof. On the other hand, if an appropriate gap is provided below the skin material support table 6 and the receiving plate 89 is arranged at this position, the clamping operation of the skin material 95 on the skin material support table 6 is completed. Is the skin material 95
The skin material 9 may be placed on the receiving plate 89.
5 is facilitated.

After the setting operation of the skin material 95 is completed, the lowering operation of the jigs 30 and 31 for attaching the skin material is performed. In this lowering operation, first, as shown in FIG. 10, as shown in FIG. Then, the skin material support table 6 is lowered by a predetermined dimension La against the resistance of the air damper 62, and the skin material support table 6 is stopped at that position. As a result, the whole of the skin material 95 can be considerably brought close to the surface of the base member 9. Next, as a second stage, the second reciprocating cylinders 86, 86 are operated to lower the jigs 30, 31, and these jigs 3
The skin material 95 is pushed downward by 0,31.

However, at this time, the jig 31 is set in advance so as to protrude below the jig 30 by the operation of the third reciprocating cylinder 87, and the jig 31 precedes the jig 30. Then, as the jig 30 descends, the jig 31 is relatively raised with respect to the jig 30. Finally, as shown in FIG. It is pressed against the surface of the base member 9. For example, as shown in the figure, a relatively large convex portion 92 serving as, for example, an armrest portion is provided on the surface of the base member 9.
When the jig 31 is used, large wrinkles and the like easily occur in the skin material 95 at the side portions of the convex portions 92. However, when the jig 31 is used, the skin material 95 is formed at the side portions of the convex portions 92. Large wrinkles and the like can be prevented from occurring. The support table 91 may be inclined as necessary, and may be set at an angle at which the jig 31 can easily press the skin material 95 against the base member 9.

When the skin material 95 is pushed downward by the jigs 30 and 31, tension is applied to the skin material 95 because the outer peripheral edge of the skin material 95 is held by the clamper 61 of the skin material support table 6. Will be done. If the clamper 61 is moved backward by the cylinder 63, it is possible to more reliably apply the tension to the skin material 95. Therefore, this also allows the skin material 9
5 can be appropriately pressed against the surface of the base member 9 with few wrinkles. When the skin material 95 is pressed against the surface of the base member 9, the skin material 95 becomes hot melt m.
Through the surface of the base member 9.

After the above-mentioned work of sticking the skin material 95,
As shown in FIG. 13, the blade body 70 of the cutting device 7 is moved forward and downward, and the skin material 95 is cut at a position closer to the outside of the concave groove 90 of the base member 9. In this case, in order to prevent the base member 9 from being damaged by contact with the blade body 70 which is a hot blade, for example, a so-called underlay member (not shown) such as a brass plate-like member is used as the skin material. It is arranged in advance below the section 95 to be cut. Also, at the time of this cutting, the tension can be continuously applied to the skin material 95 by the clamper 61. By such a cutting operation, it is possible to obtain, from the rectangular skin material 95, a similar skin material 95 'slightly larger than the contour of the concave groove 90 by one turn. When the cutting operation of the skin material is completed, the cutting device 7 and the jigs 30 and 31 are returned to the original positions. The scrap of the skin material 95 clamped by the clamper 61 is used for the next new skin material.
It may be removed when setting to 1.

After the above operation, a wood graining operation of the skin material 95 'is performed. First, the jig 80
The support table 91 supporting b is moved back into the wood graining device 2 and the base member 9 is arranged below the wood graining jig 20. Next, the wood grain jig 20 is lowered, and as shown in FIG. 14, the outer peripheral edge of the skin material 95 ′ is pressed by the downward protruding edge portion 22 a of the wood grain jig 20, and the concave groove 90 of the base member 9 is formed. Grain inside.
At this time, the openings 23a 'to 23 of the jig 20
The blowing of warm air from c 'is of course stopped.

After the wood graining operation is completed or during the wood graining work, as shown in FIG. 15, the heating blade 51 of the drilling device 5 is advanced to pierce a predetermined portion of the skin material 95 '. This drilling operation is an operation of providing a hole at a position corresponding to, for example, a handle mounting portion of a door trim. At the time of this perforation work, a predetermined portion of the skin material 95 ′ may be completely punched out, but if so, the punched portion is completely separated from the other portions of the skin material 95 ′, and this is As scattered.
Therefore, instead of the means for punching the entire part to be pierced, a piercing method may be used in which a part of the part is connected to another part of the skin material 95 '. In this way, it is possible to appropriately prevent the punched portion from becoming a scrap separated from the skin material 95 ′ and being scattered around the woodgear device 2. Further, in the base member 9, a hole 93 is provided in advance in a portion where the skin material 95 'is perforated. Further, on the surface of the jig 80b supporting the base member 9, a receiving member 18 made of a relatively soft metal such as an aluminum plate or silicon rubber is provided in a portion facing the heating blade 51. Thereby, the cutting operation of the skin material 95 'can be appropriately performed while preventing the wear of the heating blade 51.

According to the above-described series of operations, a skin material 95 ′ of a predetermined shape is adhered to the surface of the base member 9 via the hot melt m, and the peripheral edge of the skin material 95 ′ is formed in the concave groove of the base member 9. A good-looking door trim with a grain of 90 can be obtained. In the manufacturing apparatus A, since the wood graining device 2 also serves as a heating device for the hot melt m, it is not necessary to provide a dedicated heating device separately from the wood graining device 2, and the overall structure of the manufacturing device A is simplified. Can be achieved.

In the above embodiment, the case where a hot melt mainly composed of polypropylene is used as an adhesive has been described as an example, but the present invention is not limited to this. In the present invention, other types of adhesives may be used. The present invention can be applied to various cases if it is necessary to heat the adhesive after applying the adhesive to the base member.

Further, in the above embodiment, the case of manufacturing the door trim has been described as an example, but the present invention is not limited to this. The invention of the present application can be generally applied to the case of manufacturing an interior material for a vehicle in which a skin material is stuck on a base member, and can be applied to trims other than door trims or panels such as instrument panels. Needless to say. Therefore, the specific type, material, shape, and the like of the base member and the skin material are not limited.

In addition, the specific structure of the manufacturing method and the manufacturing apparatus of the vehicle interior material according to the present invention is not limited to the above embodiment. For example, a wood grain jig for a wood grain device may be configured so that hot air can be supplied to a portion surrounded by its downwardly projecting edge,
The hot air supply means and the inside of the wood grain jig may be simply connected by piping.

[Brief description of the drawings]

FIG. 1A is a schematic plan view illustrating an example of a base member, and FIG. 1B is a cross-sectional view taken along the line II of FIG.

FIG. 2A is a schematic plan view showing an example of a skin material, and FIG. 2B is a cross-sectional view taken along the line II-II in FIG.

FIG. 3 is a front view showing an example of an overall schematic configuration of a vehicle interior material manufacturing apparatus according to the present invention.

FIG. 4 is a schematic front view of a main part showing an example of a wood graining device.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 4;

FIG. 7 is a sectional view taken along line VII-VII of FIG. 4;

FIG. 8 is a schematic front view of a main part of the wood grain cutting device shown in FIG. 4, showing a state in which hot air blowing is stopped.

FIG. 9 is a sectional view of a main part showing an example of a skin material sticking device.

FIG. 10 is a cross-sectional view of a main part showing an operation state of the skin material sticking device shown in FIG. 9;

FIG. 11 is a sectional view taken along line XI-XI of FIG. 10;

12 is a cross-sectional view of a main part showing an operation state of the skin material sticking device shown in FIG. 9;

13 is a cross-sectional view of a main part showing an operation state of a cutting device provided in the skin material sticking device shown in FIG. 9;

FIG. 14 is a cross-sectional view of a main part showing a state where a wood graining operation of the skin material is performed using the wood graining device.

FIG. 15 is a cross-sectional view of a main part showing a drilling operation on a skin material.

[Explanation of symbols]

 Reference Signs List A Vehicle interior material manufacturing device m Hot melt (adhesive) 1 Adhesive coating device 2 Wood graining device 3 Skin material gluing device 4 Hot air supply device 5 Punching device 6 Skin material support table 7 Cutting device 9 Base member 20 Wood grain Jig 22a Projecting edge 90 Recess 95,95 'Skin material

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akinobu Maeda 2-1-1 Taoyuan, Ikeda-shi, Osaka Daihatsu Industry Co., Ltd. (72) Inventor Shoji Kokubu 3-8-13 Minamikagaya, Suminoe-ku, Osaka (72) Inventor Toshikazu Iwasaki 3-8-13 Minamikagaya Suminoe-ku, Osaka-shi Pall Industry Co., Ltd.

Claims (5)

[Claims] An adhesive application step of applying an adhesive to a part of the surface of the base member; a heating step of heating the adhesive applied to the base member; and applying the adhesive to the surface of the base member. A skin material attaching step of bonding the skin material through the surface member, and a part of the skin material using a wood graining jig having a downwardly protruding edge portion that can be fitted into a concave groove formed on the surface of the base member. A wood graining step of wood graining in the concave groove, and in the heating step, the adhesive of the base member is applied by a wood graining jig used in the wood graining step. A method for producing an interior material for a vehicle, comprising masking a portion having a mask and supplying warm air to the masked portion. 2. The method according to claim 1, wherein the adhesive is hot melt. 3. An adhesive application device for applying an adhesive to a part of the surface of the base member, and the adhesive applied to the surface of the base member after the adhesive applied to the base member is heated. A skin material sticking device for bonding the skin material through the base member, and a wood grain having a downwardly projecting edge for graining a part of the skin material into a groove formed in the surface of the base member. A wood graining device having a wood grain jig, and a vehicle interior material manufacturing apparatus having the wood grain grain jig, wherein the wood grain graining device can supply hot air to a portion surrounded by a downwardly projecting edge of the wood grain grain jig. An apparatus for manufacturing an interior material for a vehicle, comprising: a hot air supply unit; and the wood graining device also serves as a heating device for heating the adhesive. 4. The wood graining device is arranged between the adhesive coating device and the skin material spreading device so as to be adjacent to the adhesive application device and the skin material spreading device, respectively. 4. The manufacturing device of the vehicle interior material according to 3. 5. The adhesive applying device according to claim 3, wherein the adhesive applied from the discharge nozzle is applied to a desired position while being dispersed by air spirally circling around the nozzle. Or the manufacturing apparatus of the vehicle interior material according to 4.