JP3226846B2 - Terminal winding device for vehicle interior materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used to form a hemming portion by folding an edge portion of a vehicle interior material formed of a thermoplastic material applied to a molded ceiling or a door trim for a vehicle. The present invention relates to a terminal winding device for a vehicle interior material.

[0002]

2. Description of the Related Art Conventionally, as a terminal winding device for a vehicle interior material, for example, a device described in Japanese Patent Publication No. 6-41246 is known. This conventional vehicle interior material terminal winding device, the edge of the molded ceiling as an interior material covering the ceiling, in order to prevent the end face from being seen from the passenger compartment side when assembled to the vehicle, A device for forming a folded ear portion, generally called a hemming, having an edge portion turned back, and a lower die (a receiving stand) formed in a shape of an interior material so as to support the interior material.
And a plurality of upper dies (pressing dies) that form a hemming portion by folding the edge portion of the interior material, and a plurality of clamps that operate the upper dies. Then, in this conventional technique, after the interior material is pressed against the lower mold, the portion forming the hemming portion is softened by blowing hot air, and then the clamp is actuated and the upper mold is swung to operate the interior material. They were folded inward and then pressed by the upper mold to form folded ears. Further, in the interior material, in the corner portion where the edge portion has a curved shape, the upper mold divided into a plurality is configured to be aligned in a line along the curved shape when the clamp is operated. I was

[0003]

SUMMARY OF THE INVENTION In the above-mentioned conventional apparatus, since a large number of dies are used in the curved shape of the corner portion of the interior material at the corner portion, the structure of the device becomes complicated and the cost is increased. There was a problem that it would.
Therefore, in order to solve this problem, the pressing die is formed by forming a hemming portion at a corner portion of the interior material with a corner pressing die and a linear pressing die forming a hemming portion at a straight portion of the interior material. It is conceivable to reduce the number and cost. However, in such a solution, for example, when forming a hemming portion in a portion such as a sunroof opening of a molded ceiling, a pressing die,
As shown by the solid line in the explanatory view of FIG.
As shown by imaginary lines in FIG.
Is moved outward such that the inner circumference of the opening is flush, and at this position, the edge of the opening (not shown) is pressed by each of the molds 01 to 03 to form a hemming portion, as shown in the figure. When each of the dies 01 to 03 is moved outward, the corner part pressing dies 0
In order to move 1 in the oblique direction, a space is created between the corner part pressing die 01 and the straight part pressing die 02, 03. Therefore, the edge of the interior material located in this space portion is not pressed down, and a raised portion occurs in the hemming portion, which is not sufficient in product quality. For this reason, after the work by the device, it is necessary for the worker to manually press down the raised portion, and the workability is poor.

[0004] Further, conventionally, when heating and softening the edge of the interior material, in order to uniformly soften the entire edge,
The heating means is formed in such a shape that it is arranged at equal intervals on the periphery of the opening over the entire length. For this reason, it is necessary to form even a curved portion such as a corner portion of the opening so as to conform to the shape, so that the production of the heating means is extremely troublesome, resulting in an increase in cost.

[0005] In addition, since the interior material is conventionally supported flat by the work cradle, especially when processing an interior material having a large area such as a ceiling material of a one-box car as the interior material. However, there is a problem in that the installation space for the apparatus is large, which is inefficient, and furthermore, the work for transporting the interior material requires space and is troublesome, resulting in low production efficiency.

The present invention has been made in view of the above-mentioned problems, and it is possible to use a low-cost means that does not require the die to be divided into a large number at the corners of the opening of the interior member, while using the terminal. A first object is to obtain a high product quality without a part of the hemming part being lifted when the hemming part is formed by folding back, and further, to simplify the configuration of the heating means to reduce the cost. A third object is to improve the production efficiency by reducing the installation space of the apparatus.

[0007]

Means for Solving the Problems In order to achieve the above object, the present invention provides a work cradle for supporting a work made of a thermoplastic material which is finished as an interior material for a vehicle having an opening, Heating means for heating and softening the edge of the periphery of the opening of the work supported by the work receiving table; and heating and softening the edge by the heating means, and then the edge at an inner position of the opening. Perform a rising operation to move the edge in the direction perpendicular to the edge, and then perform a fold operation to move from the inside of the opening to the outside and fold the raised edge. ,afterwards,
A press die for pressing the folded edge against a general portion of the work to form a hemming portion, and a terminal winding device for a vehicle interior material, comprising: A straight part pressing die for processing a straight part and a corner pressing part for processing a corner part of an opening are provided, and both ends of the corner part pressing part and the ends of the straight part pressing parts adjacent to both ends are provided. An overlapping portion is provided in which the outer peripheral end of the corner pressing die and the inner peripheral end of the linear pressing die are overlapped with each other, and this overlapping portion is, at the time of performing the rising operation, the corner pressing die. When the outer periphery of the mold is flush with the outer periphery of the straight part stamping die, the outer ends of both molds are in contact with each other, and when the folding operation is completed, the inner periphery of the corner part stamping die and the inner periphery of the straight part stamping die are flush with each other. Becoming one and the inner ends of both types And a means which is formed so as to abut. According to a second aspect of the present invention, in the terminal winding device for an interior material for a vehicle according to the first aspect, a linear heating element is disposed along the shape of the periphery of the opening as the heating means, and the opening is formed. In the corner portion, using a means in which the heating elements are arranged so as to cross each other, the heating element generates a larger amount of heat at a place where the distance is long according to the distance from the periphery of the opening as compared with a part where the distance is short. It was formed as follows. According to a third aspect of the present invention, in the terminal winding device for an interior material for a vehicle according to the second aspect, the opening is formed in a rectangular shape having a curved corner, the heating elements are arranged orthogonally, and the heating is performed. The configuration is such that a portion formed so as to increase the calorific value is provided at a corner portion between the elements. In the invention according to claim 4, claim 1 is
4. The terminal winding device for vehicle interior materials according to any one of items 3 to 3,
A configuration in which the work cradle is formed so as to be able to support the work in an upright state, the pressing die is vertically arranged on the work cradle, and the heating means is vertically arranged to face the work cradle. And

[0008]

According to the terminal winding device for a vehicle interior material of the present invention,
When forming the hemming portion on the periphery of the opening, the work is first supported by the work receiving table, and then the inner peripheral edge of the opening of the work is heated and softened by the heating means. Next, the pressing die is caused to rise from the position inside the opening to raise the edge, and then the pressing die is turned back to turn the edge in the rising state. Next, a pressing operation is performed on the pressing die to press the folded edge to form a hemmed portion. In moving the pressing die as described above, in the present invention, both ends of the corner pressing die and an end of the linear pressing die adjacent to both ends are provided with an overlap, and the overlapping portion is Before the start-up operation is performed, the outer periphery of the corner part pressing die and the outer periphery of the straight part pressing die are flush with each other, and the outer peripheral ends of both the dies are configured to contact each other. At the time of the upward operation, the outer peripheral edge of each mold can raise the edge without cutting. Then, when the folding operation of the pressing die is performed and the edge is turned back, the inner periphery of the corner pressing die and the inner periphery of the linear pressing die are flush with each other, and the inner circumferences of both the dies are overlapped. The ends are in contact. Therefore, when the pressing operation of the pressing dies is performed thereafter, the edge portions can be pressed without being cut by the inner periphery of each die. As described above, in the present invention, the hemming portion is formed by pressing the corner portion of the opening with one corner portion pressing die, so that the number of pressing dies can be reduced. A gap is not formed between the stamping die and the straight stamping die, so that a problem that a part of the hemming portion is lifted does not occur, and high product quality can be obtained.

According to the second and third aspects of the present invention, the heating means is constituted by intersecting the linear processing elements, so that the labor for bending the processing elements is unnecessary. In addition, when such a linear processing element is used, if there is a curved shape at an edge such as a corner of the opening, the distance between the processing element and the edge of the opening is constant in this curved portion. No longer. As described above, if the distance between the two is not constant, if the heating element is configured to generate heat uniformly uniformly, the degree of heating at the edge of the opening becomes higher as the distance becomes shorter, while the temperature increases. In a distant portion, the temperature is low and does not soften, but in the present invention, the amount of heat generated is larger than that of a portion closer to the edge from the edge of the opening in accordance with the difference in the distance. Even if there is a difference in the distance, the heating softening degree at the edge of the opening can be kept constant.

In the invention according to claim 4, the work receiving table is
It is configured to support the work in an upright state. For example, even in the case of a work having a large area such as a ceiling material of a one-box car, the vertical projection area can be reduced to reduce the installation space. Further, in this case, since the work can be transported in the upright state, the transport space can be reduced, and the transport operation can be facilitated.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In describing the embodiment, first, a work to be processed will be described with reference to FIG. 3. The work W is finished as a molded ceiling of an automobile, and the work W is made of a thermoplastic resin such as polypropylene. A base made of a polyester fiber or a non-woven fabric is adhered to a base material, and is formed in a substantially semi-cylindrical shape in advance according to the shape of the ceiling of the automobile as shown in the figure, and the work W
An opening OP for a sunroof is formed at the center of the. In the present embodiment, the four edges of the opening OP are used to wind the rear side.

Next, the configuration of the embodiment will be described. FIG. 2 is a perspective view of a punch device PM which is a main part of the embodiment. In the figure, reference numeral 1 denotes a device substrate, which is formed in a rectangular plate shape. Slide bearings 2, 2, 2, 2 are provided upright at four corners of the device substrate 1, and a punch base plate 3 is movable on the slide bearing 2 in the vertical direction in FIG. It is supported by. That is, the slide bearing 2 has a cylindrical cylinder 2a.
And a rod 2 supported so as to be able to move in and out of the cylinder 2a.
b, and a punch base plate 3 is bolted to the tip of the rod 2b.

At a substantially central portion of the device substrate 1,
An upper and lower drive cylinder 4 driven by fluid pressure such as hydraulic pressure or air pressure is provided. This vertical drive cylinder 4
One end is fixed to the device substrate 1 and the other end is fixed to the punch base plate 3.
Is configured to move up and down with respect to the device substrate 1.

The punch base plate 3 has a front winding punch mechanism 51 and a side winding punch mechanism 5 corresponding to the front, rear, left and right linear portions of the opening OP of the work W.
2, a rear winding punch mechanism 53, and corner winding punch mechanisms 54, 54 corresponding to the corners of the opening OP are provided. The side winding punch mechanism 52 is not shown on the right side of the opening OP (the arrow F corresponds to the front of the workpiece W to be machined, and the arrow L corresponds to the left side of the workpiece W). In addition, the front and rear corner winding punch mechanisms 54 on the right side of the opening OP are not shown.

Each of the punch mechanisms 51 to 54 has a slide cylinder 61, 62 as a drive source, and a piston rod (not shown) which is moved into and out of the slide cylinder 61, 62.
And plates 50c-e having their base ends fixed thereto, and pressing dies 51a, 51 attached to the distal ends of the plates 50c-e.
2a, 53a and 54a.

Although the slide cylinders 62 of the corner winding punch mechanism 54 are formed independently and thinly, the slide cylinders 62 for driving the punch mechanisms 51, 52, 53 corresponding to the linear portions are used. The slide cylinder 61 is formed integrally with a cylinder portion. That is, the slide cylinder 61 has a configuration in which a cylinder hole (not shown) is formed in a cross shape, and a piston rod is provided in each hole.

The slide cylinders 61 and 62 move the pressing dies 51a to 54a outward from the inside of the opening OP and vice versa.
Plates 50c, 50d, 5 of each punch mechanism 51-54
It is guided by a slide guide 55 provided between the base plate 3 and the punch base plate 3. Although not shown, the slide guide 55 includes a guide groove and a slider that slides in the guide groove. The slide guide 55 is used to guide the movement of the pressing dies 51a to 54a as described above. In addition, it has a limiter function for restricting the movement of the press dies 51a to 54a at a predetermined position, that is, the positions of the press dies 51a to 54a during the compression stroke of each slide cylinder 61, 62 (hereinafter, this position is set). The positions of the pressing dies 51a to 54a during the extension stroke of the slide cylinders 61 and 62 (hereinafter, these positions are referred to as hemming positions) are restricted to predetermined positions. The details of these positions will be described later in the operation of the embodiment.

Overlap portions 63 are provided at both ends of each of the pressing dies 51a to 54a. That is, FIG. 1 shows each of the pressing dies 51 a to 54 a of each of the punch mechanisms 51 to 54.
FIG. 4 is a plan view of a stamper for straight lines 51a, 52a, 53a
Is formed to have a width larger than the width of the pressing die 54a at the corner portion, and stepped portions 51 for accommodating the ends of the pressing die 54a are provided at both ends of the linear pressing die 51a, 52a, 53a.
b, 52b, and 53b are formed.
The longitudinal dimension r of b, 52b, 53b is a wrap margin of the overlap portion 63. The dimension of the lap margin r will be described in the operation of the embodiment described later.

The pressing dies 51a to 54a are formed in a sectional shape as shown in FIG. Although FIG. 4 shows the pressing die 51a of the front winding punch mechanism 51, the other pressing dies 52a to 54a are also formed in the same sectional shape.

Further, in the figure, reference numeral 7 denotes a support for supporting the periphery of the opening OP of the work W. This cradle 7
It is provided outside the configuration shown in FIG. 2 and is formed in a shape along the shape of the peripheral edge of the opening OP of the work W.
A mask plate 8 is provided at a position facing the receiving table 7. Although not described in detail, the mask plate 8 is composed of a plurality of plates formed so as to be able to contact the opening OP of the work W over substantially the entire circumference. It is supported movably in the horizontal direction in the figure.

The infrared heater 10a of the heating device (heating means) 10 is located above the mask plate 8.
Is provided. As shown in FIG. 5, the heat device 10 has a linear infrared heater (heating element) 10a having a rectangular shape substantially the same size as the peripheral portion of the opening OP and supported by a rectangular frame 10b. ing. The output of the infrared heater 10a is adjusted so that the rectangular corner has a higher temperature than the middle. By the way,
When a nichrome wire or the like is used as the heater, the density of the winding of the wire at the end portion is made denser than that at the middle portion, so that the end portion can be configured to have a higher temperature as described above. .

Further, the frame 10b is supported on the support frame 10c so as to be movable in the axial direction of the push rod 10d (vertical direction described above). That is, the push rods 10d are erected at four positions on the frame 10b. Then, each push rod 10d is attached to the support frame 1
0c is inserted into the slide hole 10e.
A stopper bracket 10f is attached to the upper end of the push rod 10d so that the frame body 10b and the infrared heater 10a do not slide below the support frame 10c by a predetermined amount or more. FIG. 6 shows the details thereof. As shown in FIG. 6, the outer periphery of the lower end of the push rod 10d is provided with a touch spring 10g.
A ball plunger 10k fitted with a steel ball 10i is screwed into the lower end of the touch spring 10g, and the plate 50c (50d, 50
e) is arranged so as to be able to abut. The support frame 1
0c is the mask cylinder 9 and the mask plate 8
I support.

FIG. 7 is a side view of the punching device PM. A stopper mechanism 11 not shown in FIG. 2 is provided between the device substrate 1 and the punch base plate 3. . These stopper mechanisms 11 are for regulating the upward movement of the vertical drive cylinder 4 at a predetermined position, and have a function of changing the regulating position in two ways. The change of the restriction position 11 is performed in conjunction with the driving of the stopper cylinder 12. Hereinafter, this will be described in detail.

FIG. 8 is a perspective view of the stopper mechanism 11. The stopper mechanism 11 is inserted through a stopper post 11b having a stopper plate 11a at an upper end and an insertion hole 11c opened in the stopper plate 11a. A stopper bolt 11d having an upper end fixed to the lower surface of the punch base plate 3 (see FIG. 7), a nut 11e screwed to a lower end of the stopper bolt 11d, and a pivot pin 11p rotatable around the stopper plate 11a. And a semicircular notch 11g formed at the tip of the stopper arm 11f and having a slightly larger diameter than the stopper bolt 11d. One end of the stopper arm 11f provided on each of the stopper mechanisms 11 is connected to the connecting lever 1
1h, and the connecting lever 11h is connected to the stopper cylinder 12 (see FIG. 7). Therefore, this stopper mechanism 11 is
Moves upward, the stopper bolt 11d moves upward with respect to the stopper post 11b, and restricts the movement when the nut 11e collides with the stopper plate 11a or the stopper arm 11f. That is, the position where the stopper arm 11f is shown by a solid line in FIG. 8 (this position is the position when the stopper cylinder 12 is driven for shortening).
In this case, the nut 11e is restricted from colliding with the stopper arm 11f and moving upward from the position. However, the position of the stopper arm 11f indicated by an imaginary line (the stopper cylinder 12 is The nut 11e does not collide with the stopper arm 11f.
When the punch base plate 3 moves upward, the position restricted by the stopper mechanism 11 is restricted by the stopper arm 11f.
There are two different positions corresponding to the thickness of the sheet.

Next, the operation of the embodiment will be described.

First, the flow of the basic operation of winding the edge of the opening will be described.
The workpieces W are placed on the cradle 7 in this state. At this point, the pressing dies 51a to 54a
As shown in FIG. 4A, the work W is arranged below the terminal we on the periphery of the opening OP of the work W.

Next, the mask cylinder 9 is extended and driven to move the mask plate 8 until the mask plate 8 comes into contact with the outer edge of the opening OP of the work W, so as to be in the state shown in the drawing, and the infrared heater 10a of the heating device 10 is turned on. The heating operation is performed to soften the base end of the edge portion we of the work W. At this time, while the shape of the opening OP is curved at the corner portion as shown in FIG. 3, the infrared heater 10a is formed in a rectangular shape as shown in FIG. 5 and the corner portion forms a right angle. I have. Accordingly, there is a portion where the distance between the edge portion we and the infrared heater 10a in the corner portion is longer than the distance between the edge portion we and the infrared heater 10a in the straight portion.
In the present embodiment, since the infrared heater 10a is configured to have a higher temperature in the corner portion than in the straight portion, the whole is substantially in a softened state.

After the base end of the edge portion we is softened as described above, the vertical drive cylinder 4 of the punch device PM is driven to extend and the punch base plate 3 is raised. Along with this, the press dies 51a to 54a also rise (start-up operation), and as shown in FIG.
Bends upward. At this time, in the stopper mechanism 11 shown in FIG. 8, since the stopper cylinder 12 is in the shortened drive state, the stopper arm 11f is arranged at the position indicated by the solid line in the figure, and the nut 11e collides with the stopper arm 11f, so that the punch base plate 3 is restricted from moving upward. In this regulation position, the lower surfaces of the pressing dies 51a to 54a are arranged at positions higher than the upper surface of the mask plate 8 by the thickness of the edge portion we.

As the punch base plate 3 is raised, as shown in FIG. 6 or FIG.
The zero push rod 10d is pushed upward by the punch base plate 3 via the touch spring 10g, so that the pressing dies 51a to 54a do not interfere with the infrared heater 10a.

Next, the slide cylinders 61 and 62 (see FIG. 2) provided on the punch base plate 3 are extended and driven. At this time, first, the slide cylinder 62 of the corner winding punch mechanism 54 is extended and driven. Then, the pressing mold 54a is moved from the set position indicated by the solid line to the hemming position indicated by the imaginary line as shown in the plan view of FIG. 1 (at this time, at an angle of 45 ° with respect to the pressing dies 51a, 52a, 53a). Then, the center slide cylinder 61 is driven to extend to drive the punch mechanisms 51, 5 in the linear portions.
The pressing dies 51a to 53a are moved from the set position to the hemming position (return operation). As described above, when the pressing dies 51a to 54a are moved by the punch mechanisms 51 to 54, the moving amount of the pressing dies 54a by the corner winding punch mechanism 54 is a value obtained by multiplying the lap margin r by sec45 °. In the hemming position shown by the imaginary line in the drawing, the dies move by the wrap margin r in the front-rear direction.
a does not overlap. The moving amount of the pressing dies 51a to 53a in the linear portion is set to such an amount that the end of the pressing dies 54a and the inner circumferential position coincide with each other at the hemming position indicated by the imaginary line in the drawing.

The pressing dies 51a to 54a are moved from the set position to the hemming position, so that the lower edge of the pressing plate 51a to the hemming position as shown in FIG.
Fold almost horizontally along.

Next, the mask cylinder 9 is shortened to move the mask plate 8 away from the vicinity of the opening OP of the work W. Thereafter, the vertical drive cylinder 4 is shortened to lower the punch base plate 3, thereby causing the punch base plate 3 to move downward. Pushing die 5
As shown in FIG. 4D, 1a to 54a are lowered (pressing operation), and press the edge portion we to open the opening OP.
A hemming portion is formed at the peripheral portion of the. At this time, since the inner periphery of each of the pressing dies 51a to 54a arranged at the hemming position is arranged to be flush and continuous as shown in FIG. 1, the hemming portion is evenly distributed over the entire periphery as shown in FIG. d) It is bent into the shape shown in (e).

Next, the vertical drive cylinder 4 is extended to move each of the pressing dies 51a to 54a together with the punch base plate 3. Before this driving, the stopper cylinder 12 is extended. By the extension driving of the stopper cylinder 12, the connecting lever 11h slides in the direction of the arrow, the stopper arm 11f swings to the position shown by the imaginary line in FIG.
Move away from 1d. Therefore, the stopper bolt 11d
Is restricted by the stopper plate 11a, and the restricted position changes to an upper position by the thickness t of the stopper arm 11f.

Therefore, due to the extension driving of the vertical drive cylinder 4 described above, the pressing dies 51a to 54a are larger in dimension t (5) than the winding portion of the terminal we of the work W as shown in FIG.
mm). Thereby, the pressing mold 51a
54a does not interfere with the hemming portion of the work W, and the shape does not deteriorate even if the hemming portion has a slight vertical variation.

Next, after the slide cylinder 61 is shortened, the slide cylinder 62 is shortened to return the pressing dies 51a to 54a to the set positions shown by the solid lines in FIG. Then, together with the punch base plate 3, the pressing dies 51a to 54a are
Return to the original position shown in (a). Further, as the punch base plate 3 descends, the heating device 10 also descends by its own weight. As described above, the heat device 10 moves up and down with the movement of the punch base plate 3 while maintaining the contact state of the touch spring 10 g against the punch base plate 3. , The shock at the time of movement of the heating device 10 is reduced. By the way, instead of touch spring 10g, shock absorber and rubber
A buffer member such as sponge and resin may be provided.

As described above, the vehicle interior material winding device according to the embodiment has the following effects. (1) As shown in FIG. 1, an overlap portion 63 is provided between the pressing dies 51a to 54a, and the pressing dies 51a to 54a are moved from the set position to the hemming position when the edge portion we of the work W is involved. Sometimes, no space is formed between the pressing die 54a at the corner portion and the pressing dies 51a to 53a at the linear portions, so that the opening OP of the work W is formed.
When the hemming portion is formed by winding the edge portion we of the peripheral edge of the hemming portion, the hemming portion is formed without being lifted over the entire periphery thereof, so that manual work of an operator who corrects the hemming portion is unnecessary. As a result, productivity can be improved, and since the pressing die is not divided into a plurality at the corners, the apparatus can be simplified and the manufacturing cost can be reduced.

(2) In the heating device 10, since the infrared heater 10a is configured to generate a large amount of heat at the corners, even if the shape of the infrared heater 10a does not completely match the shape of the opening OP. , The edge w of the workpiece W
e is uniformly softened as a whole when softened, and can be uniformly softened as a whole by using an inexpensive means having a simple shape.

(3) Since the heating device 10 is configured to move with the movement of the punch base plate 3 by driving the vertical driving cylinder 4 without using the driving means itself, the configuration of the heating device 10 is simple. As a result, manufacturing costs can be reduced.

(4) Each pressing die 51a is moved by the stopper mechanism 11.
The pressing dies 51a to 54a are configured to move at different heights when performing a folding operation of moving from the set position to the hemming position and when returning to the set position after forming the hemming portion. The pressing dies 51a to 54
When "a" returns, it does not interfere with the hemming portion, and the product quality can be improved.

Next, another embodiment will be described.
FIGS. 9 and 10 show another embodiment of the stopper mechanism 11. The stopper mechanism 111 of this other embodiment is similar to that of FIG.
In the step shown in (d), this is an example in which the stopper mechanism 11 is provided with a stopper function of limiting the downward movement amount of the pressing die 51a to a predetermined amount so that the pressing die 51a does not press the work W too much. In describing this embodiment, the same components as those described above are denoted by the same reference numerals and description thereof will be omitted.

In this embodiment, an upper stopper arm 11j having the same shape as the stopper arm 11f is provided above the stopper plate 11a so as to be rotatable about the stopper pin 11p. And the upper stopper arm 1
1j, there are two guide cylinders 11 with the notch 11g interposed therebetween.
k is erected. Further, a support plate 11m is fixed to the stopper bolt 11d.

Adjustable bolts 11n, 11n are inserted into the guide cylinder 11k. The upper connecting lever 1 is attached to the upper stopper arm 11j.
An upper stopper cylinder (not shown) is connected to the connecting lever 11i.

Therefore, the stopper mechanism 111
The stopper arm 11f and the upper stopper arm 11j are independently rotatable. When the punch base plate 3 is moved downward, the notch portion 11g of the upper stopper arm 11j is moved by a predetermined amount when the punch base plate 3 is moved by a predetermined amount.
It is in a fitting state to 1d, and restricts the head of the bolt 11n from abutting against the lower surface of the support plate 11m and moving further downward. Accordingly, in the step shown in FIG. 4D, the hemmed portion of the work W is not crushed. At this time, the notch 11g of the stopper arm 11f is separated from the stopper bolt 11d.

Further, another embodiment will be described with reference to FIG. Punch device PM and heat device 1 described above
0 has been described as being arranged vertically, the terminal winding device of the embodiment shown in FIG.
1, the above-described punch device PM and the receiving table 7 are vertically arranged via a moving mechanism 102, and the above-mentioned heating device 10 is vertically arranged via a moving mechanism 104 on an apparatus base 103. In addition, both moving mechanisms 102 and 104
The above-described punching device PM, receiving table 7 and heating device 10
They are configured to approach and separate from each other in a state where they face each other.

Each of the device bases 101 and 103 is provided with a holding device 107 for holding the work W therebetween, the holding device 107 comprising a holding cylinder 105 and a buffer cylinder 106. The work W is held by the holding device 107. It is configured to be able to be held in an upright state.

In this embodiment, since the work W is held in the upright state, the vertical projection area of the apparatus is small, so that the installation space of the apparatus is small, and the transfer of the work W before and after this processing is also in the upright state. In addition, the work of loading the apparatus becomes easy, and the occupying space is reduced even during the transportation, so that the working efficiency can be improved.

Although the embodiment has been described, the present invention is not limited to this. For example, in the embodiment, the case where the hemming portion is formed at the edge of the opening of the molded ceiling is shown. However, the present invention is also applicable to other vehicle interior parts such as trim of the side wall of the passenger compartment. Good.

FIGS. 5 and 6 show a form in which a cover having a substantially U-shaped cross section is provided on the back surface of the infrared heater 10a of the heating device 10. As shown in FIG.
A cover 10h having a circular cross section may be used. This cover 1
At 0h, a slit j is formed in the irradiation direction, and the heat generated by the infrared heater 10a is narrowed down by the slit 10j for irradiation so that the heating efficiency can be improved.

[0049]

As described above, in the terminal winding device for a vehicle interior material according to the present invention, the pressing die is constituted by a corner pressing die and a linear pressing die, and both ends of the corner pressing die;
An overlap portion is provided at the end of the linear part pressing die adjacent to both ends, and at the time when the pressing die performs the rising operation, the outer periphery of the corner part pressing die and the outer periphery of the straight part pressing die are in a plane. At the same time, the outer edges of both molds abut,
At the time when the stamping die has completed the turning operation, the inner periphery of the corner stamping die and the inner periphery of the linear portion stamping die are flush with each other, and the inner peripheral ends of both molds are formed to be in contact with each other. At the time when the edge portion can be raised without being cut off by the outer peripheral edge portion of each mold, and the edge portion is folded back, at the overlap portion, the inner periphery of the corner portion pressing die and the straight portion are formed. When the inner circumferences of the pressing dies are flush with each other and the inner peripheral ends of both dies are in contact with each other, and then the pressing operation of the pressing dies is performed to form a hemming portion, the corner pressing portion and the linear portion pressing dies are formed. By providing no gap, there is no problem that a part of the hemmed portion is lifted, and an effect that high product quality can be obtained.

According to the second and third aspects of the present invention, since the heating means is constituted by intersecting the linear processing elements, the labor for bending the processing elements is unnecessary, and the cost can be reduced. At places where the distance between the element and the edge of the opening is not constant, the amount of heat generated is greater at a location farther from the edge of the opening than at a location closer to the edge according to the difference in the distance. Even if there is a difference in the distance, the degree of heat softening at the edge of the opening can be kept constant, and the effect that the product quality can be made uniform can be obtained.

According to the fourth aspect of the present invention, the work receiving table is
Since the work is configured to be supported in an upright state, and the pressing die and the heating means are arranged vertically correspondingly, for example, a work having a large area such as a ceiling material of a one-box car is processed. Even in this case, the installation space can be reduced by reducing the vertical projection area, and the work can be transported while standing up, so the transportation space can be reduced, the transport work can be facilitated, and the cost can be reduced. The effect that workability can be improved is obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing a stamp according to an embodiment.

FIG. 2 is a perspective view showing a main part of the embodiment.

FIG. 3 is a perspective view showing a work.

FIG. 4 is a diagram illustrating an operation of a pressing die according to the embodiment.

FIG. 5 is a perspective view showing a heating device according to the embodiment.

FIG. 6 is a sectional view showing a main part of the embodiment.

FIG. 7 is a side view of the punch device according to the embodiment.

FIG. 8 is a perspective view showing a main part of the embodiment.

FIG. 9 is a perspective view showing another embodiment of the stopper mechanism.

FIG. 10 is a sectional view showing another embodiment of the stopper mechanism.

FIG. 11 is a side view showing another embodiment.

FIG. 12 is a sectional view showing another embodiment of the heating means.

FIG. 13 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 W Work OP Opening edge We edge 1 Device board 2 Slide bearing 2a Cylinder 2b Rod 3 Punch base plate 4 Vertical drive cylinder 7 Receiving stand (Work receiving stand) 8 Mask plate 9 Mask cylinder 10 Heating device (heating means) 10a Infrared heater (Heating element) 10b Frame body 10c Support frame 10d Push rod 10e Slide hole 10f Stopper bracket 10g Touch spring 10h Cover 10i Steel ball 10j Slit 10k Ball plunger 11 Stopper mechanism 111 Stopper mechanism 11a Stopper plate 11b Stopper post 11c Insertion hole 11d Stopper bolt 11e Nut 11f Stopper arm 11g Notch 11h Connection lever 11i Upper connection lever 11j Upper stopper arm 11k Guide Cylinder 11m Support plate 11n Bolt 11p Hinge pin 12 Stopper cylinder 50c Plate 50d Plate 50e Plate 51 Front winding punch mechanism 51a Pressing die 51b Step 52 Side winding punching mechanism 52a Pressing 52b Step 53 Rear winding punching 53a Pressing 53b 54 Corner winding punch mechanism 54a Pressing die 55 Slide guide 61 Slide cylinder 62 Slide cylinder 63 Overlap portion 101 Device base 102 Moving mechanism 103 Device base 104 Moving mechanism 105 Nipping cylinder 106 Buffer cylinder 107 Holding device

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-198027 (JP, A) JP-A-6-127443 (JP, A) JP-A-5-111956 (JP, A) JP-A-Heisei 4- 272828 (JP, A) JP 6-41246 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60R 13/02 B29C 53/00 B60J 5/00

Claims (4)

(57) [Claims] 1. A work support for supporting a work made of a thermoplastic material, which is finished as an interior material for a vehicle having an opening, and an edge of a periphery of the opening of the work supported by the work support. Heating means for heating and softening the edge, after the edge is heated and softened by the heating means, moves in a direction perpendicular to the edge at a position inside the opening to raise the edge Performing a rising operation, and then performing a folding operation to move from the inside of the opening to the outside and fold the raised edge, and thereafter, the folded edge to a general portion of the workpiece. A pressing die for performing a pressing operation of pressing and forming a hemming portion; anda terminal winding device for a vehicle interior material, comprising: a linear portion pressing die for processing a linear portion of an opening; Corner A corner stamping die to be processed is provided. Both ends of the corner stamping die and the ends of the linear stamping die adjacent to both ends are provided with an outer peripheral end of the corner stamping die and an inner periphery of the straight stamping die. An overlap portion is provided in which the side end portions overlap each other, and the overlap portion, at the time of performing the rising operation,
At the time when the outer periphery of the corner stamping die and the outer periphery of the straight portion stamping die are flush with each other and the outer peripheral ends of both molds abut, and the folding operation is completed, the inner periphery of the corner stamping die and the inner periphery of the straight stamping die are finished. A terminal winding device for an interior material for a vehicle, wherein the inner peripheral ends of the two types are formed so as to be in contact with each other. 2. As the heating means, means for arranging a linear heating element along the shape of the periphery of the opening and intersecting the heating element at a corner of the opening is used. The terminal according to claim 1, wherein the element is formed such that the amount of heat generated at a portion that is farther from the periphery of the opening is greater than that at a portion that is farther away than the portion that is closer. Winding device. 3. A portion in which the opening is formed in a rectangular shape having a curved corner, wherein the heating elements are arranged at right angles, and the heating elements are formed in the corners of the heating elements so that the amount of heat generated is large. The terminal winding device for an interior material for a vehicle according to claim 2, wherein a terminal is provided. 4. The work receiving table is formed so as to be able to support the work in an upright state, the pressing die is vertically arranged on the work receiving table, and the heating means is vertically opposed to the work receiving table. 4. The terminal winding device for a vehicle interior material according to claim 1, wherein the terminal winding device is disposed.