JPH11254517A - Sheet-like resin molding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed a sheet-like resin in a sheet-like resin molding station from a sheet-like resin supply station even if a feed mechanism has no sheet-like resin grasping mechanism to accurately subject the same to pressure molding. SOLUTION: After a sheet-like resin is raised to a required height by a first sheet-like resin lift device 6, a feed mechanism 4 is moved to the part just under the sheet-like resin. After the sheet-like resin is placed on the feed mechanism by the first sheet-like resin lift device, it is fed to a sheet-like resin heating station 2 by the feed mechanism to be heated. The heated sheet-like resin is fed to a sheet-like resin molding station 3 by the mechanism to be raised by a second sheet-like resin lift device 14 and the feed mechanism is retracted from the sheet-like resin molding station. The sheet-like resin is allowed to fall by the second sheet-like resin lift device to be subjected to pressure molding by a molding apparatus 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in equipment for press-molding a sheet-like resin after heating and softening the resin.

[0002]

2. Description of the Related Art Conventionally, as one of such facilities, there is one disclosed in Japanese Patent Application Laid-Open No. 9-109243. This is configured such that a rectangular sheet-shaped resin having a predetermined size is heated and softened at a sheet-shaped resin heating station while being held by a frame-shaped transport mechanism, and then pressure-formed at a sheet-shaped resin forming station.

[0003]

However, in the conventional sheet-like resin molding equipment configured as described above, the transport mechanism is a large-sized one provided with a gripping mechanism for gripping the sheet-like resin at a peripheral portion. The entire equipment becomes large-scale, and the sheet-shaped resin of the transport mechanism is heated and softened and droops greatly, so that the heater of the heating device cannot be close to the sheet-shaped resin, and the heating efficiency of the heating device is accordingly poor. In addition, it is necessary to have a heat-resistant structure so that the holding mechanism of the sheet-like resin can be cut off by the heat of the heating device.In addition, in order to retract the transport mechanism during the pressure-forming of the sheet-like resin, It is necessary to make the portion corresponding to one side of the transport mechanism openable and closable, and there is a problem that the transport mechanism has a complicated structure.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a method for transferring a sheet-like resin without using a sheet-like resin gripping mechanism.
It is an object of the present invention to provide a facility capable of carrying a sheet-shaped resin from a sheet-shaped resin supply station to a sheet-shaped resin molding station through a sheet-shaped resin heating station, and accurately press-molding the sheet-shaped resin.

[0005]

Means for Solving the Problems In order to achieve the above-mentioned object, a sheet-like resin molding apparatus according to the present invention is an apparatus for heat-softening a sheet-like resin and then press-molding the same.
A sheet-like resin supply station provided with a first sheet-like resin lifting / lowering device for gripping and lifting a rectangular sheet-like resin of a predetermined size, and heating for heating and softening the sheet-like resin supplied from the sheet-like resin supply station Resin heating station equipped with a device, a second sheet-like resin lifting / lowering device that grips and raises and lowers the sheet-like resin heated in the sheet-like resin heating station, and molding for pressure-molding the heated sheet-like resin A sheet-shaped resin molding station equipped with a device, the sheet-shaped resin is carried into the sheet-shaped resin molding station from the sheet-shaped resin supply station through the sheet-shaped resin heating station, and the sheet-shaped resin is placed and at least substantially A multi-portion supported at the center and capable of passing the heat of the sheet-shaped resin heating device A conveying mechanism having a support member constituting the Jo, the transport mechanism, characterized in that anda transport mechanism moving device for reciprocating between the sheet-shaped resin feed station and the sheet-like resin molding station.

[0006]

According to the above-described structure, the sheet-shaped resin is raised to a required height by the first sheet-shaped resin lifting / lowering device of the sheet-shaped resin supply station, and then the conveying mechanism is provided immediately below the raised sheet-shaped resin. Then, the sheet-like resin is lowered by the first sheet-like resin lifting / lowering device and placed on the transport mechanism. Next, the sheet-shaped resin is conveyed to the sheet-shaped resin heating station by the conveying mechanism, and is heated and softened by the sheet-shaped resin heating device. Subsequently, the sheet-shaped resin is conveyed to the sheet-shaped resin molding station by the conveying mechanism. Next, after raising the sheet-like resin by the second sheet-like resin elevating device of the sheet-like resin molding station, the transport mechanism is retracted from the sheet-like resin molding station, and then, the sheet-like resin is raised and lowered by the second sheet-like resin molding station. After being lowered by the apparatus, pressure molding is performed by a molding apparatus.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
This will be described in detail with reference to FIG. As shown in FIG. 1 which is a front view, the sheet-like resin molding equipment of the present invention includes a sheet-like resin supply station 1, a sheet-like resin heating station 2, a sheet-like resin molding station 3, and a sheet-like resin molding station. Transport mechanism 4 for transporting the sheet-like resin from the sheet-shaped resin supply station 1 to the sheet-shaped resin molding station 3 through the sheet-shaped resin heating station 2, and the transport mechanism 4 is connected to the sheet-shaped resin supply station 1 and the sheet-shaped resin molding station 3. And a transport mechanism moving device 5 that reciprocates between the two.

In the sheet-like resin supply station 1, there is provided a first sheet-like resin lifting device 6 for adsorbing and raising and lowering a rectangular sheet-like resin S having a predetermined size. Reference numeral 6 denotes a plurality of sets of suction mechanisms 7.7 for sucking the sheet-like resin, a mounting member 8 to which the plurality of sets of gripping mechanisms 7.7 are mounted, and a mounting member 8.
And an electric actuator 9 for moving up and down.
The electric actuator 9 is mounted on the ceiling of the portal frame 10. The sheet-like resin supply station 1
, A sheet-like resin lifting device 11 that lifts the stacked sheet-like resins S to a required height is disposed directly below the first sheet-like resin lifting device 6.

In the sheet-shaped resin heating station 2, a heating device 12 for heating and softening the sheet-shaped resin S is supported by an auxiliary portal frame 45 provided on the left side of the portal frame 10. It is. The electric heater 13 of the heating device 12 is provided as close as possible to the passage of the transport mechanism 4.

The sheet-like resin molding station 3 is provided with a second sheet-like resin lifting / lowering device 14 for grasping and raising / lowering the sheet-like resin S, and a molding device 15 for press-molding the sheet-like resin. is there. The second sheet-shaped resin lifting device 14 is configured to hold two sets of gripping mechanisms 16 and 16 for holding the sheet-shaped resin S on both front and rear sides thereof, and move the two sets of gripping mechanisms 16 and 16 closer to and away from each other. The two sets of approach / separation mechanisms 17/17 (see FIG. 2), and the two sets of electric actuators 18/18 for raising and lowering the two sets of gripping mechanisms 16/16 and the two sets of approach / separation mechanisms 17/17, respectively.
And two sets of electric actuators 18.1
8 is mounted on a portal frame 19 at a required interval in the front-rear direction, and the portal frame 19 is installed on a machine base 20. In addition, as shown in FIG.
A lower mold 21 is provided on the upper side, and an upper mold 22 is disposed directly above the lower mold 21 so as to be able to move up and down by an electric actuator 23. It is attached.

As shown in FIG. 4 which is a side view, the gripping mechanism 16 includes a fixed claw 25 fixed to a support member 24 mounted on the electric actuator 18, and a fixed claw 25.
A movable claw 26 mounted on the support member 24 so as to be vertically rotatable;
And a link mechanism 28 for connecting the piston rod of the cylinder 27 to the movable claw 26.

As shown in FIG. 3 which is a plan view, the transport mechanism 4 has a frame-shaped main body 29 and a porous body which is mounted on the main body 29 and through which the heat of the sheet-shaped resin heating device 2 can pass. A supporting member 30 made of a wire mesh or a punched metal; The moving member 31
A ball screw mechanism 32 for moving the body 31 toward and away from each other, and a sliding member 34 that cantileverly supports the main body 29 on the right side and slidably fits on the rail 33 of the transport mechanism moving device 5 (FIG. 1). And a support member 35 having the same. The moving member 31 is provided with a handle 3 attached to a screw shaft 32 a of the ball screw mechanism 32.
6 can be moved closer to or away from each other by rotating forward and backward.

As shown in FIG. 1, the transfer mechanism moving device 5 penetrates through the sheet-shaped resin supply station 1 and the sheet-shaped resin heating device 2 to form the portal frame 10 and the auxiliary portal frame 45. A pair of rails 3 mounted on the rails and slidably mounting the sliding member 34 of the transport mechanism 4
7 and 37, an endless roller chain 39 connected to the transport mechanism 4 via a projecting member 38, two chain wheels 40 and 41 over which the endless roller chain 39 is bridged, and two chain wheels 42 and 42. And an endless roller chain 43 and a drive mechanism 45 configured to include a motor 44 with a speed reducer and configured to rotate the chain wheels 42.
Is reciprocated in the left-right direction by the forward / reverse rotation of the motor 44 with a speed reducer.

Next, with the equipment configured as described above,
A procedure for press-molding the sheet-shaped resin S from the state shown in FIG. 1 will be described. Note that the screw shaft 32a of the ball screw mechanism 32 is previously rotated in the forward and reverse directions by the handle 36 to move the moving members 31, 31, respectively, as shown in FIG.
The front and rear sides of the sheet-shaped resin S placed on the transport mechanism 4 are raised to a required height. First, in the sheet-shaped resin supply station 1, the motor 44 with a speed reducer of the transfer mechanism moving device 5 is driven to rotate in the reverse direction, and the transfer mechanism 4 waiting at the sheet-shaped resin heating station 2 is moved to the sheet-shaped resin supply station 1. The sheet-like resin S is adsorbed and moved to a position directly below the plurality of sets of adsorption mechanisms 7, 7 of the sheet-like resin elevating device 6, and then the electric actuator 9 of the first sheet-like resin elevating device 6 is extended. To lower the plurality of sets of the suction mechanisms 7, 7 and the sheet-like resin S.

Next, the suction state of the plurality of sets of suction mechanisms 7, 7 on the sheet-shaped resin S is released, and the sheet-shaped resin S is placed on the transport mechanism 4. Subsequently, the electric actuator 6 is contracted to operate the mounting member 8, By raising the plurality of sets of the suction mechanisms 7, 7 and the like, and operating the sheet-like resin lifting device 11 of the sheet-like resin supply station 1, the stacked sheet-like resin S groups are combined into one sheet-like resin S. Raise by the amount corresponding to the thickness. Next, the motor 4
4, the sheet-shaped resin S is conveyed to the sheet-shaped resin heating station 2 by the conveying mechanism 4 and heated and softened by the sheet-shaped resin heating device 12. In this case, the sheet-like resin S is entirely supported by the support member 30 of the transport mechanism 4 as well as the central portion, and does not hang down even when it is softened by heating.

After the heating of the sheet-like resin S is completed, the motor 44 with a speed reducer is further rotated in the normal direction to transfer the heated and softened sheet-like resin S by the transport mechanism 4 to the sheet-like resin forming station 3.
Then, the electric actuators (not shown) of the two sets of approach / separation mechanisms 17/17 are extended to reduce the width of the sheet-like resin S in the gripping mechanisms 16/16 in the width direction. As shown in (1), the leading ends of the fixed claws 25 of the gripping mechanisms 16 are made to enter between the main body 29 of the transport mechanism 4 and the peripheral edge of the sheet-shaped resin S. Next, the cylinders 27, 27 of the plurality of sets of gripping mechanisms 16, 16 are extended and the gripping mechanisms 16, 16 grip the front and rear sides of the sheet-shaped resin S,
Subsequently, the electric actuators 18 are contracted to raise the sheet resin S together with the gripping mechanisms 16.

Next, the transport mechanism 4 is retracted by the reverse rotation of the motor 44 with a speed reducer and made to stand by at the sheet-like resin heating station 2, and then the electric actuators 18 of the second sheet-like resin lifting device 14 are extended. The sheet-like resin S is moved down together with the gripping mechanisms 16, and the sheet-like resin S is placed on the lower mold 21 of the molding device 15 of the sheet-like resin molding station 3. Next, the electric actuator 23 of the molding device 15 is extended to operate the upper mold 2.
2 is lowered, and the cylinders 27, 27 of the gripping mechanisms 16, 16 are contracted to release the gripping state of the gripping mechanisms 16, 16 with respect to the sheet-shaped resin S, and the sheet-shaped resin S is pressure-formed. After the press-forming of the sheet-shaped resin S is completed, the electric actuators (not shown) of the two sets of approach / separation mechanisms 17/17 are contracted to reduce the width of the sheet-shaped resin S in the gripping mechanisms 16/16 in the width direction. Then, the electric actuator 23 is contracted to raise the upper mold 22.
Next, the electric actuators 18 are contracted and the plurality of sets of gripping mechanisms 16
Is raised to the level shown in FIG. 4, and then the molded resin is taken out from the lower mold 21 to complete one cycle.

[0018]

As is apparent from the above description, the present invention provides a sheet-like resin supply station provided with a first sheet-like resin lifting / lowering device for gripping and raising / lowering a rectangular sheet-like resin having a predetermined size. A sheet-shaped resin heating station provided with a heating device for heating and softening the sheet-shaped resin supplied from the sheet-shaped resin supply station, and a second sheet for gripping and moving up and down the sheet-shaped resin heated in the sheet-shaped resin heating station Resin molding station equipped with a sheet-like resin elevating device and a molding device for press-molding a heated sheet-like resin; and forming the sheet-like resin from the sheet-like resin supply station through the sheet-like resin heating station into a sheet-like form. It is carried into a resin molding station, and the sheet-like resin is further placed on the resin molding station and at least approximately in the center. And a transfer mechanism having a porous support member through which the heat of the sheet-shaped resin heating device can pass, and reciprocating the transfer mechanism between the sheet-shaped resin supply station and the sheet-shaped resin molding station. And a transport mechanism for moving the sheet-like resin from the sheet-like resin supply station to the sheet-like resin heating station even if the sheet-like resin transport mechanism does not have the sheet-like resin gripping mechanism. It has excellent effects such as being able to carry the sheet-shaped resin into the resin-shaped molding station and press-molding the sheet-shaped resin accurately.

[Brief description of the drawings]

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

FIG. 2 is a left side view of FIG.

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 4 is an enlarged detail view of a portion B in FIG. 2;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sheet-shaped resin supply station 2 sheet-shaped resin heating station 3 sheet-shaped resin molding station 4 transfer mechanism 5 transfer mechanism moving device 6 first sheet-shaped resin lifting device 12 heating device 14 second sheet-shaped resin lifting device 15 molding device 30 support Element

Claims (1)

[Claims] 1. A sheet forming apparatus for heating and softening a sheet-like resin and then press-molding the sheet-like resin, comprising a first sheet-like resin lifting / lowering device 6 for gripping and raising and lowering a rectangular sheet-like resin having a predetermined size. A sheet-shaped resin supply station 1; a sheet-shaped resin heating station 2 including a heating device 12 for heating and softening the sheet-shaped resin supplied from the sheet-shaped resin supply station 1; A sheet-like resin molding station 3 including a second sheet-like resin lifting / lowering device 14 for gripping and raising and lowering the sheet-like resin, and a molding device 15 for press-molding the heated sheet-like resin; From the resin supply station 1 to the sheet resin molding station 3 through the sheet resin heating station 2; A transfer mechanism 4 having a porous supporting member 30 on which the sheet-shaped resin is placed and supported at least at a substantially central portion and through which heat of the sheet-shaped resin heating device 12 can pass; Resin supply station 1 and sheet resin molding station 3
And a transport mechanism moving device 5 for reciprocating between the two.