JP3511050B2 - Manufacturing method and apparatus for listing member for sheet skin - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a listing member for a seat skin, which is used to suspend and secure a seat skin on a cushion pad.

[0002]

2. Description of the Related Art Conventionally, in order to suspend and secure a seat skin on a cushion pad, a cloth-made hanging bag is sewn along the hanging portion of the seat skin, and a metal listing wire is attached to the hanging bag. Inserting the hanging wire into the bag and inserting the listing wire and the insert wire embedded in the cushion pad with a C-ring or spring to fix the hanging bag to the cushion pad. Is being carried out.

[0003] In the case of suspending and fastening the seat skin by hanging, since the metal-made listing wire is used so that the cloth-made hanging bag can withstand the tensile fixation, not only the cost becomes high, but also the listing wire is used as the bag of the hanging bag. It must be inserted separately inside and both ends of the listing wire must be curled outward from inside the bag of the hanging bag so that the listing wire does not move or come off within the bag of the hanging bag. There is also a problem, so it takes time to assemble.

Instead of the cloth-made hanging bag, the hanging band to be sewn on the seat surface side is made of a hard synthetic resin such as polyvinyl chloride, and along the longitudinal edge of the hanging band. There is also used a synthetic resin product in which a ball-shaped hanging core portion is integrally extruded and molded with a synthetic resin such as hard polyvinyl chloride. However, in the synthetic resin listing member, the hanging band portion is different in material from the seat skin, and there is a difference in hardness due to a temperature change and the like, which gives an uncomfortable feeling to the occupant.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a cloth member is used as a hanging band portion sewn along a hanging portion of a seat surface, and a hanging-shaped hanging core portion is integrally formed with the cloth member. To provide a method and an apparatus for manufacturing a listing member for a seat skin, which is capable of efficiently manufacturing a listing member for a seat skin, which can be easily and easily handled even with a simple structure by being provided, and which can be easily handled. To aim.

[0006]

According to a first aspect of the present invention, there is provided a method for manufacturing a listing member for a sheet skin, which comprises extruding a linear continuous inner core from a hard synthetic resin through a discharge port of an extrusion molding machine. , The belt-shaped cloth member is fed from the side of the inner core fed horizontally from the discharge port of the extrusion molding machine to the axis of the inner core by an assembling device and covered in two folds. The inner core covered with the cloth member fed horizontally from the assembling device is fed into the insertion passage provided inside the first sizing device, while the expanding slit is provided along the entire length in the axial direction to form a tubular shape. A continuous outer core is extruded from the discharge port of the extrusion molding machine, the rising guide is inserted into the slit of the outer core at the outlet position of the extrusion port, and is fed obliquely downward from the ejection port of the extrusion molding machine. The core is the first The cutout slope provided on the upper surface of the singing device feeds obliquely downward along the delivery angle, and the guide plate is inserted into the slit of the outer core at the center position of the cutout slope to move the outer core of the first sizing device. An insertion passage provided inside the second sizing device by guiding and feeding it near the outlet of the insertion passage provided inside and leaving the outer core slit expanded by the guide plate from the first sizing device. Of the cloth member, and the inner core covered with the cloth member is sent to the lower position of the insertion passage, and the outer core is compressed by a diameter that is narrower on the outlet side than on the inlet side of the insertion passage. The inner core covered with the member is heat-bonded.

According to a second aspect of the present invention, there is provided an apparatus for manufacturing a listing member for a sheet skin, including an inner core extrusion molding machine for extruding a continuous linear inner core from a hard synthetic resin through a discharge port, and an inner core. And an assembling device of the cloth member for feeding the strip-shaped cloth member from the side to the axial line of the inner core so as to be folded in two with respect to the inner core fed horizontally from the extrusion molding machine. At the same time, an expansion slit is provided along the entire length in the axial direction to extrude a continuous cylindrical outer core, and a rising guide that guides the outer core by cutting into the slit of the outer core at the outlet position of the outlet. And an outer core extrusion molding machine for feeding the outer core in a diagonally downward direction above the cloth member assembling apparatus, and further covering the cloth member horizontally fed from the cloth member assembling apparatus. Inside the insertion passage for feeding the inner core And a guide for guiding and feeding the outer core by notching the outer core fed from the extrusion molding machine of the outer core and feeding it obliquely downward along the angle and the slit of the outer core at the center position of the notched slope. A plate and a first sizing device provided on the upper surface near the outlet of the insertion passage, and the outer core is received in the upper position while the slit of the outer core is expanded by the guide plate, and the inner core covered with the cloth member is removed. It has a common passage that is received at the lower position and has an insertion passage whose diameter is narrower on the outlet side than on the inlet side, and the outer core is compressed by the diameter of the insertion passage and heat-bonded to the inner core covered with the cloth member. The second sizing device is sequentially arranged.

[0008]

In the method and apparatus for manufacturing a listing member for a sheet skin according to the present invention, the inner and outer cores are extruded as continuous predetermined shaft-shaped members, and the cloth member is folded in two to form an axial line of the inner core. Since the respective constituent members are integrally heat-bonded in a series of steps, the listing member in which the three members are efficiently and firmly integrated can be manufactured. Also, by forming the inner and outer cores, which are the suspended cores, with a hard synthetic resin, the cloth part covered on the axis of the inner core is integrally formed with the three parts, which is sufficient for tension fixing of the seat skin. It can be manufactured as an inexpensive and durable listing member.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, referring to the attached drawings, a listing member for a seat skin manufactured by using a mushroom has a linear inner core 1, a strip-shaped cloth member 2, as shown in FIG.
It is composed of a tubular outer core 3. In this component,
The inner core 1 and the outer core 3 are made of hard synthetic resin such as polyvinyl chloride. Along the longitudinal axis of the outer core 3,
A slit 4 is provided to allow the cloth portion to be sewn on the seat surface to protrude to the outside. As the cloth member 2, a relatively rigid cotton cloth such as Katsuragi cloth, kansai cloth or the like, a chemical fiber, a non-woven cloth or the like is used.

The inner core 1 is formed into a thin continuous wire having a diameter of about 3 mm. Since the cloth member 2 is folded in two, the cloth member 2 is covered on the axis of the inner core 1. The outer core 3 is formed in a continuous tubular shape having a diameter of about 5 mm and including the axis of the inner core 1 covered with the cloth member 2 inside. The outer core 3 has slits 4 in the cloth portion 2b extending from the cloth portion 2a covered on the axis of the inner core 1.
The inner core 1, the inner core 1, and the cloth portion 2a covered on the axis of the inner core 1 are integrally joined together by being pulled out further.

In the listing member, the cloth portion 2b pulled out from the slit 4 of the outer core 3 serves as a hanging band portion sewn to the back surface side of the seat surface. Further, the inner core 1, the cloth portion 2a covered on the inner core 1, and the outer core 3 are formed as a suspended core portion having a three-layer structure.

As shown in FIG. 2, the listing member uses the cloth portion 2b of the cloth member 2 as a suspending band, and along the suspending portion of the seat skin 5 made of a skin material, a wadding material, and a backing material, the back surface side. It is attached by sewing on.
Further, the suspension cores 1, 2a, 3 having a three-layer structure are located in the recesses of the cushion pad 6, and the stoppers 7 such as C-rings and springs are arranged on the axes of the suspension cores 1, 2a, 3. It is used to pass through the cloth portion 2a of the cloth member 2 so as to be hooked, fixedly connected to the axis of the insert wire 8 exposed in the concave portion of the cushion pad 6, and the seat skin 5 is hung and fixed to the cushion pad 6.

When the seat cover 5 is in the suspended state, the cloth portion 2b serving as the suspending band of the cloth member 2 is located on the back surface side of the seat cover 5, so that a sense of discomfort due to a difference in material from the seat cover 5 may occur. To give to someone. Further, as the suspending core portion, the cloth portion 2 covered on the axis of the inner core 1 and the inner core 1
a, the outer core 3 has a three-layer structure, and the inner core 1 and the outer core 3 made of a hard synthetic resin are formed to be rigid,
It can sufficiently withstand the tension fixing of the seat surface 5 by the stopper 7.

The listing member for the seat skin is
When sewn on the back surface of the seat skin 5 or assembled to the cushion pad 6, since the hanging cores 1, 2a, 3 are formed integrally with the cloth part 2 in a three-layer structure, it is troublesome to assemble separately. In addition, it is easy to handle because it does not move or come off.

In order to manufacture the listing member for the sheet skin, as shown in FIG. 3, an inner core forming step A, a cloth member assembling step B, an outer core forming step C, an outer core assembling step, and A manufacturing apparatus capable of continuous treatment with the joining step D is applied. This manufacturing apparatus is configured such that the equipment required for each process is arranged on one base, and the whole is treated as one processing machine to continuously process each process.

The inner core molding step A is equipped with an inner core extrusion molding machine 10 for extruding the inner core 1 into a continuous linear shape from a hard synthetic resin. In the cloth member assembling step B, the strip-shaped cloth member 2 is wound around a reel and continuously provided.

The cloth member 2 is unwound by an assembling device 11 from the side of the inner core 1 fed horizontally from the extrusion molding machine 10, folded in two and covered on the axis of the inner core 1. As the cloth member assembling apparatus 11, a vertical roller that presses one side surface of the cloth member 2 through the axis of the inner core 1 is arranged on one side, and the other side surface of the cloth member 2 is hung downward from a horizontal position and is a guide. It can be equipped with a plate arranged on the other side.

In the outer core molding step C, the outer core 3 is formed into a continuous cylindrical shape from a hard synthetic resin, and the slit 4 is formed.
Is equipped with an outer core extrusion molding machine 12 for extruding and molding with the entire length in the axial direction.

As shown in FIG. 4, the outer core extrusion molding machine 12 has a discharge port 12a for expanding the slit 4 of the outer core 3 to about 3.5 mm to extrude the outer core 3 into a cylindrical shape. A mold is provided. As shown in FIG. 5, the mold is provided with a rising guide 12b, which is inserted into the slit 4 of the outer core 3 to expand the outer core 3 to guide and feed it to a subsequent process, on the outlet side of the discharge port 12a. There is.

The outer core extrusion molding machine 12 is installed so as to feed the outer core 3 obliquely downward from above with respect to the horizontal feeding direction of the inner core 1 covered with the cloth member 2 as shown in FIG. ing.

Below the feeding direction of the outer core 3, as shown in FIG. 7, a notch slope 13a inclined obliquely downward depending on the feeding angle of the outer core 3 and a similar angle at the center position of the notch slope 13a. A first sizing device 13 having a guide plate 13b having an inclined surface and having a width of about 3 mm is provided on the upper surface. In the sizing device 13, an insertion passage 13c for feeding the inner core 1 covered with the cloth member 2 is provided inside so as to be continuous in the horizontal direction. Notch slope 13
The a and the guide plate 13b are provided so that the outer core 3 can be guided and fed near the outlet of the insertion passage 13c.

In the outer core assembling and joining step D, as shown in FIGS. 1 and 7, a common insertion passage 14a for feeding both the inner core 1 covered with the cloth member 2 and the outer core 3 is provided inside. A second sizing device 14 is provided.

In the second sizing device 14, the slit 4 of the outer core 3 is inserted into the guide plate 13b of the sizing device 13.
The outer core 3 which has been expanded is received in the upper position of the insertion passage 14a, while the inner core 1 covered with the cloth member 2 is inserted into the insertion passage 14a.
It is arranged to be received in the lower position of a. The sizing device 14 has an insertion passage 14a as shown in FIG.
Is provided with a diameter that becomes narrower from the inlet side 14b toward the outlet side 14b, and a heater is built in as a compression joining process of the outer core.

In the apparatus for manufacturing this listing member, in addition to the above-mentioned devices, as shown in FIG. 3, the water tank 15 for cooling the axis line after the extrusion molding of the inner core 1 and the compression treatment for the outer core 3 are cooled after the compression molding. A third sizing device 16, a take-up machine 17 used to continuously convey the respective constituent parts, and a cutting machine 18 for finally sizing the listing member continuously molded from the respective constituent members are provided. There is.

To explain the flow of all the steps of the apparatus for producing the listing member, after the inner core 1 is extruded and formed into a continuous linear shape by the extrusion molding machine 10, it is first passed through the water tank 15 to be cooled. The extruded inner core 1
Initially, the front end side is passed through each device and fed into the take-up machine 17 to be used as a continuous conveying means for the cloth member 2 and the outer core 3.

On the axis of the inner core 1, the cloth member 2 fed from the side of the inner core 1 in the feeding direction in the cloth member assembling step B is folded in two by the assembling device 11 and covered. The inner core 1 covered with the cloth member 2 is fed into the insertion passage 13c of the sizing device 13. Further, the extruded outer core 3 is fed from the extrusion molding machine 12 into the insertion passage 13c.

As described above, the outer core 3 of the sizing device 14 is positioned so as to be positioned above the inner core 1 covered with the cloth member 2 while the slit 4 is being spread and held by the guide plate 13b of the sizing device 13. It is sent to the insertion passage 14a.

Since the insertion passage 14a of the sizing device 14 is formed in a taper shape having a narrower diameter from the inlet side 14b toward the outlet side 14b, the inner core 1 covered with the cloth member 2 is inserted. The outer core 3 from the slit 4 on the intermediate side of 14a
It is press-fitted inside. Further, when reaching the outlet side 14b from the intermediate side of the insertion passage 14a, the outer core 3 is compressed by the diameter of the insertion passage 14a to reduce the slit 4 and the cloth member 2
Is compressed and deformed so as to be pressed around the axis of the inner core 1, and is thermocompression bonded.

After that, the insertion passage 1 of the sizing device 16
6a, the outer core 3 is cooled so as to keep it in a predetermined shape, and further fed from a take-up machine 17 to a cutting machine 18 and cut into a predetermined length to obtain a listing member for a sheet skin. During this process, the sizing device 1
In the case of 3, 14 and 16, the cloth portion 2b serving as a suspending band portion of the cloth member 2 sewn to the seat surface is also provided with the respective insertion passages 13c,
Inner core 1 that is hung at 14a and 16a and covered with a cloth member 2
It is sent along with (see FIG. 6).

[0030]

As described above, according to the method and apparatus for manufacturing a listing member according to the present invention, since the seat cover and the cloth member are sewn together, the seat occupant does not feel uncomfortable and the seat cover is tensioned and fixed. In addition, a listing member that can sufficiently withstand the hanging core formed in a three-layer structure and can be handled easily can be manufactured efficiently and inexpensively in a series of flow steps.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing a listing member for a sheet skin manufactured by a manufacturing apparatus according to the present invention.

FIG. 2 is a partial cross-sectional view showing a sheet in which the listing member is assembled.

FIG. 3 is a side sectional view schematically showing an apparatus for manufacturing a listing member for a seat skin according to the present invention.

FIG. 4 is a front view showing an extrusion molding die of an outer core provided in the manufacturing apparatus of the listing member.

5 is a side sectional view showing the outer core extrusion molding die of FIG. 4. FIG.

FIG. 6 is a side view schematically showing each sizing device arranged in a subsequent process subsequent to the extrusion molding machine of the same outer core.

FIG. 7 is a plan view showing a sizing device for guiding and guiding an outer core in the sizing device.

FIG. 8 is a plan view showing each sizing device of FIG.

[Explanation of symbols]

1 Inner core 2 Cloth member 2a Cloth part 2b covered on the axis of the inner core 2 Cloth part continuous with the cloth part covered on the axis of the inner core 3 Outer core 4 Slit 10 Inner core extrusion molding machine 11 Cloth member Assembling device 12 Outer core extrusion molding machine 12a Outer core discharge port 12b Outer core rising guide 13 First sizing device 13a Outer core delivery notched slope 13b Outer core guide feed guide plate 13c Covering cloth member Inner core insertion passage 14 Second sizing device 14a Outer core and cloth member covered inner core insertion passage 14b Insertion passage inlet side 14c Insertion passage outlet side

Claims (2)

(57) [Claims] 1. A linear continuous inner core is extruded from a hard synthetic resin through a discharge port of an extrusion molding machine, and a strip-shaped cloth is fed to the inner core that is horizontally fed from the discharge port of the extrusion molding machine. The member is unwound from the side on the axis of the inner core by the assembling device to be folded in half, and the inner core covered with the cloth member fed horizontally from the assembling device of the cloth member is subjected to the first sizing. It is fed into the insertion passage provided inside the device, and on the other hand, a wide slit is provided along the entire length in the axial direction and a cylindrical continuous outer core is extruded from the ejection port of the extrusion molding machine and the rising guide is ejected. At the outlet position of the outer core, the outer core is inserted into the slit of the outer core, and is fed obliquely downward from the discharge port of the extrusion molding machine. And send it diagonally downward , The guide plate is inserted into the slit of the outer core at the center position of the notched slope, the outer core is guided and fed to the vicinity of the outlet of the insertion passage provided inside the first sizing device, and the outer core is inserted from the first sizing device. The outer core with the slit of the guide plate expanded by the guide plate is sent to the upper position of the insertion passage provided inside the second sizing device, and the inner core of the cloth member is placed at the lower position of the insertion passage. Sent to
Manufacture of a listing member for a sheet skin, characterized in that an outer core is compressed by a diameter that is narrower on the outlet side than on the inlet side of the insertion passage to heat bond the inner core covered with the cloth member. Method. 2. An inner core extrusion molding machine for extruding a linear continuous inner core from a hard synthetic resin through a discharge port, and a strip shape for the inner core fed out horizontally from the inner core extrusion molding machine. The cloth member is attached to the inner core axis line from the side, and the cloth member assembling device for folding the cloth member in two is placed in order, and the expansion slit is provided along the entire length in the axial direction. A core that has a continuous outer core extruded and a rising guide that guides the outer core by cutting it into the slit of the outer core at the outlet position of the outlet, and sends the outer core diagonally downward. Is provided above the cloth member assembling apparatus, and further has an insertion passage for feeding the inner core covered with the cloth member fed horizontally from the cloth member assembling apparatus, and has an outer core. The outer core sent from the extrusion machine of A first sizing device provided on the upper surface near the outlet of the insertion passage with a notch slope for feeding diagonally downward and a guide plate for guiding and feeding the outer core by cutting into the slit of the outer core at the central position of the notch slope. , The outer core slit is expanded with the guide plate, the outer core is received in the upper position, and the inner core covered with the cloth member is received in the lower position. A common passage with a narrower diameter on the outlet side than on the inlet side. And a second sizing device for sequentially bonding the outer core with the inner diameter of the insertion path to heat and bond the outer core to the inner core covered with the cloth member. Equipment for manufacturing listing components.