JP3508980B2 - Method and equipment for forming resin sheet - 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 suitable for obtaining a resin product by stacking a heat-softened sheet-shaped base material and a non-heated sheet-shaped skin material and then press-molding these materials, and equipment therefor. .

[0002]

2. Description of the Related Art When a base material and a skin material are superposed on each other and press-molded, conventionally, these materials are superposed on each other and heated, and then simultaneously press-molded to obtain a desired resin product. In recent years, the shapes of molded articles have become diverse, and as a result, molding methods have been carried out in which only the base material is heated and softened without heating the skin material. However, a suitable resin sheet molding method and equipment therefor are not yet available, and the industry strongly requests the appearance of such a molding method and equipment. The present invention has been made in view of the above circumstances, and an object thereof is a method suitable for obtaining a resin product by press-molding them by heating and softening only the base material without heating the skin material. To provide facilities.

[0003]

In order to achieve the above-mentioned object, the resin sheet molding method according to the invention of claim 1 is a method in which a heat-softened sheet-like base material and an unheated sheet-like skin material are superposed on each other. A press-molding method to obtain a resin product, which comprises feeding an unheated sheet-shaped skin material of a predetermined size from one side to a press-molding device, and heating and softening a sheet-shaped base material of a predetermined size, and then the other From the side to the press molding device, the base material and the skin material that have been fed are stacked and press-molded, and then the molded resin product is taken out from one side to which the skin material is fed. Is characterized by.

The resin sheet molding equipment according to the second aspect of the present invention is equipment for obtaining a resin product by stacking a heat-softened sheet-shaped base material and a non-heated sheet-shaped skin material and then press-molding them. A press molding device that press-molds the stacked base material and the skin material, a base material heating device that heats the base material, and the base material is sent to the base material heating device and the press molding device in this order. A substrate transfer device,
A base material supply device that supplies the base material to the base material conveying device, and a skin material supply device that sends the skin material to the press molding device and takes out the resin product from the press molding device.
The product take-out station is provided, and the non-heated skin material is sent to the press molding apparatus, and the heat-softened base material is sent to the press molding apparatus. The product is taken out from the skin material supply / product take-out station via the substrate carrier.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is a schematic front view.
As shown in FIG. 2 which is a plan view of FIG. 1, the resin sheet molding equipment to which the present invention is applied includes a press molding apparatus 1 for press molding a base material B and a skin material S which are overlaid with each other, and the base material. The base material heating device 2 for heating the material B, the base material conveying device 3 for feeding the base material B to the base material heating device 2 and the press molding device 1 in this order, and the base material conveying device 3 for the base material The base material supply device 7 supplies the material B, and the skin material supply / product take-out station 8 sends the skin material S to the press molding apparatus 1 and takes out the resin product from the press molding apparatus 1. Further, in the press molding apparatus 1, the lower mold 11 is mounted on the mounting base 12, and the upper mold 13 is arranged so as to be able to move up and down by the elevating frame 14, and the elevating frame 14 is a gate type. It is fixed to the lower end of the piston rod of a downward cylinder (not shown) mounted on the frame 15, and the upper mold 13 is moved up and down by the expansion and contraction operation of the cylinder.

As shown in FIG. 1, the base material heating device 2 is arranged on the right side of the press molding device 1 adjacent to the base material heating device 2 and has upper and lower heaters in a substantially sealed space. 21 and 22 are fixed chain frames 31 and 3 which will be described later.
1 and the endless roller chains 32, 32 are provided so as to be sandwiched from the vertical direction at a required interval, and the base material B can be heated from the vertical direction.

Further, as shown in FIGS. 1 and 2, the base material conveying device 3 extends leftward from the base material supplying device 7 and penetrates the base material heating device 2 left and right, and as shown in FIG. As shown, a pair of beam-shaped fixed-type chain frames 31 and 31 and a movable-type chain frame 3 that are arranged at intervals wider than the widths of the base material B and the skin material S and extend in the left-right direction.
2, 32 and a pair of fixed chain frames 31, 31
And a pair of endless roller chains 33, 33 rotatably mounted along the movable chain frames 32, 32 and spaced apart from each other by a required distance. 33 is
It extends downward at the rightward position and is tensioned by a movable sheave (not shown) and a weight (not shown) so that the length of the movable chain frames 32 can be changed when the movable chain frames 32, 32 are lowered by a required distance. It is like this.

The pair of fixed chain frames 31, 31 are mounted on rails 36, 36, 3 on a machine base 34, respectively, as shown in FIG. 3, which is an AA arrow view of FIG.
It is installed movably in the left and right directions via 7, 37,
Furthermore, the pair of fixed chain frames 31, 3
At both ends of 1, two male screw shafts 38 of a ball screw mechanism,
38 is attached through the female screw member (not shown) so as to penetrate right and left. The pair of movable chain frames 32, 32 are mounted on rails 40, 4 on a frame-shaped lifting frame 39, as shown in FIG.
The two male screws of the ball screw mechanism, which are installed on the elevating frame 39, are installed at both ends of the pair of movable chain frames 32, 32 so as to be movable in the left-right direction via 0, 41, 41. Shafts 43, 43 are mounted by penetrating left and right via female screw members (not shown). The two male screw shafts 38, 38 and the two male screw shafts 4
As shown in FIG. 2, a connecting shaft 44 is provided between the ends of the shafts 3, 43.
Are connected via a bevel gear (not shown), and the connecting shaft 4
Handles 45, 45 are fitted on both left and right ends of 4, respectively.
By rotating the male screw shafts 38, 38, 43, 43 of the book forward and backward, a pair of fixed chain frames 31,
The widths of 31, the movable chain frames 32, 32, and the endless roller chains 33, 33 can be widely adjusted.

The elevating frame 39 can be moved up and down by a ball screw mechanism 46. As shown in FIG. 1, the ball screw mechanism 46 connects the left and right ends and the central portion of the elevating frame 39 with female screw members ( (Not shown)
Three pairs of male screw shafts 47, which penetrate vertically through
47 and these three pairs of male screw shafts 4 as shown in FIG.
Three connecting shafts 48, 48 connected between the lower ends of 7, 47 via a bevel gear (not shown), and these three connecting shafts 4
A rotary shaft 49 extending in the left-right direction connected to one end of each of the rotary shafts 48 and 48 via a bevel gear (not shown) (see FIG. 2), and a motor 50 with a reducer connected to the right end of the rotary shaft 49. The elevating frame 39 can be moved up and down by the forward and reverse driving of the motor 50 with a speed reducer (see FIG. 2).

The two endless roller chains 3
3, 33 are the pair of fixed chain frames 31,
Near the right end of 31 and movable chain frames 32, 3
Two chain wheels (not shown) are rotatably arranged near the center of the two chain wheels. The two chain wheels are the right end of the pair of fixed chain frames 31, 31 and the movable chain frame. A plurality of rotating shafts 51, 51 rotatably mounted on the central portions of the mold chain frames 32, 32, respectively.
(See FIG. 3). And FIG.
As shown in, the output shaft of the motor 53 with a reduction gear mounted on the machine base 34 via the bracket 52 is connected to the right end of the single rotary shaft 51 via the shaft coupling 54. The two endless roller chains 33, 33 are rotated by driving the motor 53 with a speed reducer.

A pair of base material guide members 55, 55 are mounted at the base material carrying-in positions on the upper surfaces of the pair of fixed type chain frames 31, 31, and the pair of base material guide members 55, 55 are provided. , Fixed type and movable type. The movable type is the fixed type chain frame 31,
A horizontal cylinder 56 fixed to one side (left side) of 31
It is possible to move left and right by the expansion and contraction operation of. Also, the machine base 3
An elevating table 57 for mounting and elevating the base material B is arranged in the central part of 4 so as to be able to ascend and descend via an upward cylinder (not shown) mounted on the machine base 34. Also,
On the two endless roller chains 33, 33, a large number of needles 58, 58 capable of piercing both sides of the base material B and supporting the base material B are provided at appropriate intervals in the extending direction of the endless roller chains 33, 33. It is provided in advance (see FIG. 6).

Further, as shown in FIGS. 1 to 3, a guide member 59 for guiding the base material B to the left and right in FIGS. 1 and 2 has a cylinder 60 at the center of the right end of the machine base 34. It is arranged so that it can be moved left and right through the cylinder 6
A male screw shaft 61 of a ball screw mechanism is mounted on the male screw shaft 0 through a female screw member (not shown), and a handle 62 is fitted on the male screw shaft 61. By rotation, the movement in the left-right direction in FIGS. 1 and 2 can be adjusted. Further, a pair of base material pressing mechanisms 63, 63 are mounted at the base material carrying-in positions on the upper surfaces of the pair of fixed chain frames 31, 31, and the base material pressing mechanisms 63, 63 have support shafts (see FIG. A pressing member (not shown) rotatably supported vertically via a cylinder 64 for vertically rotating a support shaft (not shown) via an arm (not shown). Yes,
The cylinder 64 is pivotally mounted on the machine base 34 (see FIG. 1).

As shown in FIG. 3, the base material supply device 7 has a gate-shaped frame 71 that extends to the left at the crotch of the machine base 34, and a rail 7 on the ceiling of the gate-shaped frame 71.
A traveling carriage 7 arranged so as to be capable of traveling in the left-right direction via
3 and a downward-facing cylinder 74 mounted on the traveling carriage 73.
And a support member 7 on the lower end of the piston rod of the cylinder 74.
5 and a plurality of suction cups 76, 76 mounted via 5, the traveling carriage 73 includes the gate frame 71.
An endless roller chain (not shown) that is normally and reversely rotated by a motor 77 with a speed reducer mounted on the top of the motor 77 allows the motor 77 to be reciprocated in the left-right direction.

As shown in FIG. 4 which is a BB arrow view of FIG. 1 and FIG. 6 which is an enlarged detailed view of a portion D of FIG. Rails 81 and 81 having an I-shaped cross section mounted on the movable chain frames 32 and 32, and a moving member 83 movably mounted on the pair of rails 81 and 81 via sliders 82 and 82. And a pair of skin material gripping mechanisms 84, 84 mounted on the moving member 83 and gripping both left and right side portions of the skin material S with the moving member 83.

Further, the pair of skin material holding mechanisms 84, 8
4, each of the moving members 83
A gripping member 86 fixed to an upper fixed support shaft 85 so as to be vertically rotatable and having a needle at its tip, and a tip of a piston rod installed on the moving member 83 and fixed to the support shaft 85. The arm 87 is composed of a horizontal cylinder 89 connected to a pin 88 at the tip of the arm 87, and the gripping members 86, 86 are vertically rotated by the expansion and contraction operation of the cylinder 89. The moving member 83 is configured to be moved in the left-right direction by an endless roller chain (not shown) that is normally and reversely rotated by forward / reverse driving of the motor 90 with a speed reducer. It is mounted on the 91.

Next, the operation of forming and manufacturing a predetermined resin product using the equipment thus constructed will be described. In advance, the two handles 45, 45 of the base material transporting device 3 are synchronized with each other to rotate forward and backward to rotate the fixed / movable chain frames 31, 31, 32, 32 and the endless roller chain 3
The widths of 3 and 33 correspond to the widths of the base material B and the skin material S, respectively, and the handle 62 of the base material conveying device 3 is rotated in the forward and reverse directions to position the cylinder 62 at the base material B and the skin material S.
It should correspond to the length of. In addition, the lifting table 57 of the base material conveying device 3 and the upper mold 13 of the press molding device 1
Are raised respectively. Further, the motor 50 with a reducer of the base material conveying device 3 is reversely driven to lower the movable chain frames 32, 32, the elevating frame 39, and the like. Further, the cylinder 64 of the base material pressing mechanism 63, 63 of the base material conveying device 3 is contracted to raise the pressing member (not shown). Further, the motor 90 with a reducer in the skin material supply / product take-out station 8 is reversely driven to move the moving member 83 backward, and the cylinder 89 of the skin material supply / product take-out station 8 is contracted to operate the skin material. The gripping members 86, 86 of the gripping mechanisms 84, 84 are rotated upward.

Under such conditions, in order to mold a resin product from the state shown in FIGS. 1 and 2, first, the skin material S
Is manually placed on the moving member 83, and then the cylinders 89, 89 of the skin material gripping mechanisms 84, 84 are extended to grip the skin material S on the moving member 83 with the gripping members 86, 86. Then, the motor 50 with a reducer is driven to rotate normally,
Movable type chain frames 32, 32 and elevating frame 39 to a height at which the skin material S to be moved does not hit the lower mold 11.
Etc., and subsequently, the motor 90 with a speed reducer in the skin material supply / product take-out station 8 is normally driven to move the skin material S upwards in the press molding apparatus 1 by the moving member 83.
It is carried in between the lower molds 13 and 11.

On the other hand, the cylinder 74 of the base material supply device 7 is extended to lower the suction cups 76, 76, etc.
76 is brought into contact with the loaded base material B, and then the suction cup 7
The base material B is adsorbed by 6,76. Then cylinder 7
4, the suction cups 76, 76, the base material B and the like are lifted, and then the motor 77 with a reduction gear of the base material supply device 7 is driven to rotate normally to move the base material B and the like through the traveling carriage 73. It is moved right above the lifting table 57 of the base material transport device 3. Next, the cylinder 74 is extended to lower the suction cups 76, 76, etc., and the base material B is placed on the elevating table 57. Subsequently, the suction action of the suction cups 76, 76 is stopped to stop the suction cups 76, 76.
Release the adsorption of the to the base material B. Next, the cylinder 74 is contracted to raise the suction cups 76 and the like, and subsequently, the two cylinders 56 and 60 of the base material transfer device 3 are extended and moved to 2
The base member B is horizontally pushed by the individual guide members 55 and 59 to be positioned at a predetermined position, and subsequently, a cylinder (not shown)
Is contracted to lower the elevating table 57, the base material B, etc., and the base material B is placed on the endless roller chains 33, 33.

Next, the cylinders 64, 64 of the base material pressing mechanisms 63, 63 are extended / contracted to move the pressing members (not shown) up and down respectively, and the needles 58, 58 of the endless roller chains 32, 32 are mounted on the base material B. Both sides are pierced, and then the motor 53 with a reducer of the base material conveying device 3 is driven to move the base material B to the left by the endless roller chains 32, 32 to move the base material heating device 2 up and down. It is carried in between the heaters 21 and 22 and heated. After heating the base material B, the motor 5 with a reducer
3 is further driven to heat and soften the base material B between the upper and lower molds 13 and 11 of the press molding apparatus 2 and the skin material S.
Bring it directly under.

Next, the motor 50 with a speed reducer of the base material conveying device 3 is reversely driven to lower the elevating frame 39, the movable chain frames 32, 32, the base material B and the skin material S, etc., and the base material B and the skin material. The material S is placed on the lower mold 11, and then a cylinder (not shown) is extended to lower the upper mold 13 by the elevating frame 14 to press-form the base material B and the skin material S. After the completion of molding, the cylinders 89, 89 of the skin material gripping mechanisms 84, 84 are contracted to release the gripping state of the skin material S by the gripping member 84, and subsequently the motor 90 with a reduction gear is reversely driven to move the moving member 83. Etc. are returned to the skin material supply / product take-out station 8. Then, the upper die 13 is contracted by the contraction operation of the cylinder (not shown).
Then, the motor with reduction gear 50 is driven in the normal direction to raise the elevating frame 39 and the like, and the motor with reduction gear 53 is further driven in the normal direction. Then, as the endless roller chains 33, 33 rotate, the endless roller chain 3
The resin product is delivered onto the moving member 83 while the needles 58 of the number 33 and the number 33 of the needle 58 are sequentially removed from the base material B after the molding. One cycle is completed by manually removing the resin product sent onto the moving member 83.

[0021]

As is apparent from the above description, according to the present invention, an unheated sheet-shaped skin material of a predetermined size is fed from one side to a press molding apparatus, and a sheet-shaped substrate of a predetermined size is heated and softened. After that, it is fed from the other side to the press molding device, the fed base material and the skin material are overlapped and press molded, and then the molded resin product is taken out from the one side to which the skin material is fed. Therefore, the skin material is not heated, only the base material is heated and softened, and these can be press-molded to obtain a resin product. Moreover, the site for installing the equipment can be relatively small The number of people is also small, and it has an excellent effect.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a view on arrow AA of FIG.

FIG. 4 is a view as seen from the arrow BB of FIG.

5 is a view taken along the line CC of FIG.

FIG. 6 is an enlarged detailed view of a portion D in FIG.

[Explanation of symbols]

1 Press molding equipment 2 Substrate heating device 3 Substrate carrier 7 Substrate supply device 8 Skin material supply / product removal station

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Claims (2)

(57) [Claims] 1. A method for obtaining a resin product by stacking a heat-softened sheet-shaped base material and a non-heated sheet-shaped skin material and then press-molding these to obtain a non-heated sheet-shaped skin material of a predetermined size. While being sent to the press molding apparatus from one side, after heating and softening a sheet-shaped base material of a predetermined size from the other side, it is sent to the press molding apparatus, and the fed base material and the skin material are overlaid. Press molding,
A resin sheet molding method, characterized in that the molded resin product is then taken out from one side into which the skin material is fed. 2. A facility for obtaining a resin product by stacking a heat-softened sheet-shaped base material and a non-heated sheet-shaped skin material, and then press-molding these to form a resin product. A press molding apparatus 1 for press molding a base material, a base material heating apparatus 2 for heating the base material, and a base material conveying apparatus 3 for feeding the base material to the base material heating apparatus 2 and the press molding apparatus 1 in this order. A base material supply device 7 for supplying the base material to the base material conveying device 3, a skin material sent to the press molding device 1 and the resin product for the press molding device 1
Skin material supply / product removal station 8
And a resin sheet forming facility.