JP2013078898A - Molding device and molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding device and a molding method, enhancing the adhesive strength of a sheet bonded to the bottom face of a base material to prevent peeling, and improving productivity.SOLUTION: The molding device for covering the base material 10 with the sheet 4 having an adhesive layer, and bonding the sheet 4 to the base material 10, includes a base material fixture 60 provided on a base 22 to hold the base material 10, and a bonding means for bonding the sheet 4 having the adhesive layer and covering the base material 10 held onto the base material fixture 60, to the base material 10. The base 22 is provided with a pressing part 63 facing the bottom face 10a of an outer peripheral part of the base material 10 extended outward from the side peripheral surface of the base material fixture 60. A moving means is provided for allowing the pressing part 63 to separably abut on the bottom face of the outer peripheral part of the base material 10 through the sheet 4 by relatively moving the pressing part 63 and the base material 10 on the base material fixture 60.

Description

  The present invention relates to a molding apparatus and a molding method for thermoforming a sheet and bonding it to a substrate.

Conventionally, a vacuum press lamination molding apparatus is known as an apparatus for adhering a sheet (skin sheet) to the outer surface of a molding substrate (see, for example, Patent Document 1). However, this vacuum press lamination molding apparatus has the following problems.
The heating method is radiant heating in the chamber, and this heating causes elongation due to the softening of the sheet. Therefore, it is necessary to suppress sagging due to this elongation. Therefore, the vacuum pressure in the upper and lower chambers is adjusted to keep the sheet horizontal, but since it is difficult to check the exact amount of elongation of the sheet, the temperature distribution on the entire sheet surface becomes non-uniform, Secure molding and adhesion cannot be obtained, and stable quality cannot be obtained. Furthermore, the positional deviation of the printing sheet with respect to the substrate shape occurs.

Also, when the inside of the lower chamber on the substrate side is depressurized after the sheet is heated, the sheet moves to the substrate side and adheres to the substrate according to the depressurization speed, so the pressing force of the sheet against the substrate is insufficient. There is a risk. Therefore, in the case where the outer shape of the base material has a complicated uneven shape, if the pressing force of the sheet against the base material is insufficient, air stays between the uneven portion and the sheet, causing a deterioration in quality.
Furthermore, in the conventional thermoforming by the upper and lower chambers, since the volume of the chamber is large, it takes time for depressurization, the cycle time becomes longer, and the molding efficiency is lowered.

In view of this, a thermoforming apparatus using hot plate heating has been provided (see Patent Document 2) as a solution to such a problem of the vacuum press lamination molding apparatus.
The thermoforming apparatus includes a lower frame having a space capable of accommodating a base material, and a hot plate capable of bringing a heating surface into close contact with the upper edge of the lower frame, the lower frame and the hot plate, A thermoforming device by placing a sheet between them and thermoforming the sheet to mold or bond it to the base material by hot plate heating, wherein the lower frame has the upper edge on the frame A decompression unit capable of fixing the sheet and decompressing the space below the sheet is provided, and the heating plate includes a decompression unit that sucks the heating surface side, and a heating unit that heats the heating surface. Means for releasing or pressurizing the heating surface to the atmosphere, and performing adsorption / heating control by the heat plate in a state where the lower frame and the heat plate are in close contact with the sheet interposed therebetween Means, pressure reduction control means for performing pressure reduction operation in the space below the sheet, and the suction The adsorption / heating operation by the heating control means and the decompression operation by the decompression control means are performed in parallel, the adsorption / heating operation is stopped after a predetermined time from the start of these operations, and the atmosphere between the hot plate and the sheet is opened to the atmosphere. Molding operation control means for performing or pressurizing.
According to this thermoforming apparatus, high-quality molding can be realized regardless of the base material shape, the printing sheet can be well aligned with the base material shape, and the molding cycle is further improved. The time can be shortened and the molding efficiency can be improved.

Japanese Patent No. 3102916 Japanese Patent No. 4491509

By the way, the sheet | seat coat | covered and adhere | attached with respect to a base material is normally provided with the contact bonding layer, and a sheet | seat is adhere | attached on a base material with this contact bonding layer. This sheet is usually formed in a sufficient size compared to the base material in order to improve the appearance of the molded product obtained and to further increase the adhesion to the base material, and a part of the base material It is wound on the bottom and bonded. Then, trimming of the sheet is performed outside the part adhered to the bottom surface, and the extra part extending from the base material is removed.
At that time, for example, in the thermoforming apparatus by hot plate heating of Patent Document 2, the process of winding and bonding the sheet to the bottom surface of the base material is performed by blowing compressed air on the sheet positioned on the bottom surface of the base material. Yes.

  However, with such compressed air blowing, the sheet cannot be sufficiently pressed against the bottom surface of the substrate, and therefore, the adhesion of the sheet to the bottom surface of the substrate is inadequate, and there is a possibility that peeling occurs partially. . For example, when the obtained molded product is used as a home appliance or an automobile part, a thermal shock test of about −30 ° C. to + 80 ° C. may be performed to check whether or not the sheet is peeled off. When this is performed, the sheet adhered to the edge part (peripheral part) on the bottom surface of the substrate may be peeled off.

  It is also conceivable to perform the process of adhering the sheet to the bottom surface of the base material using, for example, an apparatus different from the molding apparatus by removing the base material from the base material jig. However, in that case, the adhesive layer of the extra portion of the sheet extending from the base material during transfer adheres to the hands, other jigs, and devices, so the handling is very poor and the productivity is low. It will be greatly damaged. That is, if the adhesive layer adheres to hands, other jigs, devices, etc., it takes time to peel it off. Moreover, when an excessive force is applied at the time of peeling, the sheet may be peeled off from the substrate or the sheet may be damaged. In order to prevent the adhesive layer from adhering to hands, other jigs, devices, etc., if the adhesive layer is sufficiently cured, it is transferred to another device. Cannot be done.

  The present invention has been made in view of the above circumstances, and its object is to increase the adhesive strength of a sheet that adheres to the bottom surface of a base material, to prevent the separation thereof, and to improve the productivity, and the molding apparatus and the molding It is to provide a method.

  The molding apparatus of the present invention is a molding apparatus that covers and adheres a sheet having an adhesive layer to a base material, the base material jig provided on a base and holding the base material, and the base material jig An adhesive means for adhering a sheet having an adhesive layer coated on the base material held on the base material to the base material, wherein the base material jig has an outer peripheral portion of the base material. The base jig is formed smaller than the base so that the side peripheral face extends to the inner side of the outer peripheral face of the base so as to extend outward from the side peripheral face of the jig. A pressing portion is provided opposite to the bottom surface of the outer peripheral portion of the base material extending outward from the side peripheral surface of the base material, and the base material and the pressing portion on the base material jig are moved relatively. By the above-mentioned, it is provided with the movement means which contacts the press part to the bottom of the perimeter part of the substrate via the sheet so that contact and separation are possible. There.

  According to this molding apparatus, since the moving means is provided on the bottom surface of the outer peripheral portion of the base material so that the pressing portion comes into contact with and separates from the sheet, the sheet is placed on the bottom surface of the outer peripheral portion of the base material by the moving means. By pressure bonding, the adhesive strength of the sheet adhered to the bottom surface can be increased. In addition, since the sheet can be pressure-bonded without removing the substrate from the substrate jig, when the sheet is adhered to the bottom surface of the substrate, the adhesive layer of the extra portion of the sheet extending from the substrate is Bonding to hands, other jigs, devices, etc. is prevented.

Further, in the molding apparatus, the moving means includes an urging means for urging the base material jig in a direction in which the base material held on the base material jig is separated from the pressing portion, and the base It is preferable to include a pressing unit that presses the base material held on the material jig in a direction in contact with the pressing portion.
If it does in this way, a sheet can be easily applied to the bottom of the outer peripheral part of the substrate by pressing the substrate with the pressing unit against the urging unit and moving the substrate in a direction to contact the pressing part. It can be securely crimped.

In the molding apparatus, the pressing means may be configured using air pressure, or may include a pressing jig and a pressing mechanism that presses the pressing jig.
In this way, the base material can be pressed in the state where the base material is held by the base material jig, and the base material can be moved in the direction in contact with the pressing portion. The sheet can be easily and reliably crimped to the bottom surface.

Moreover, the said shaping | molding apparatus WHEREIN: It is preferable that the recessed part is formed in the said base side rather than the bottom face of the outer peripheral part of the said base material in the side peripheral surface of the said base material jig.
In this way, when the sheet is pressure-bonded to the bottom surface of the outer peripheral portion of the base material by the moving means, a part of the sheet is released into the concave portion provided on the side peripheral surface of the base material jig and accommodated here. The sheet can be brought into contact with the bottom surface uniformly and adhered.

  The molding method of the present invention is a molding method comprising a holding step of holding a base material on a base material jig, and an adhesion step of covering and adhering a sheet having an adhesive layer to the base material, wherein the holding In the step, the side peripheral surface of the base material jig is located inside the outer peripheral surface of the base material so that the outer peripheral portion of the base material extends outward from the side peripheral surface of the base material jig. The base material is held by the base material jig, and after the bonding step, the pressing portion disposed facing the bottom surface of the outer peripheral portion of the base material is moved relatively to the bottom surface of the outer peripheral portion of the base material. Therefore, it has the crimping | compression-bonding process of crimping | bonding the said sheet | seat adhere | attached on this bottom face to the said bottom face.

  According to this molding method, in the pressure-bonding step after the bonding step, the pressing portion is moved relative to the bottom surface of the outer peripheral portion of the base material, so that the sheet bonded on the bottom surface is pressure-bonded to the bottom surface. Therefore, the adhesive strength of the sheet bonded to the bottom surface can be increased. In addition, since the pressure bonding process of the sheet can be performed without removing the substrate from the substrate jig, when the sheet is bonded to the bottom surface of the substrate, the adhesive layer of the extra portion of the sheet extending from the substrate is Bonding to hands, other jigs, devices, etc. can be prevented.

Moreover, in the said shaping | molding method, it is preferable to use what formed the recessed part in the said press part side from the bottom face of the outer peripheral part of the said base material in the side peripheral surface as the said base material jig | tool.
In this way, when the sheet is pressure-bonded to the bottom surface of the outer peripheral portion of the base material in the press-bonding step, a part of the sheet is released into the concave portion of the side peripheral surface of the base material jig and accommodated here. The bottom surface can be uniformly contacted and adhered.

Moreover, in the said shaping | molding method, what formed the concave part in the said base-material jig side of the bottom face of the outer peripheral part extended outside from the side peripheral surface of the said base-material jig is used as the said base material. Is preferred.
In this way, when the sheet is pressure-bonded to the bottom surface of the outer peripheral portion of the base material in the pressure-bonding step, a part of the sheet escapes into the concave portion of the base material and is accommodated here, so that the sheet is not unevenly formed on the bottom surface Uniform contact and adhesion are possible.

According to the molding apparatus and the molding method of the present invention, the adhesive strength of the sheet adhered to the bottom surface can be increased by pressing the sheet to the bottom surface of the outer peripheral portion of the substrate by the pressing portion. Therefore, the peeling can be prevented and a defect due to the peeling of the sheet can be prevented.
In addition, the sheet can be crimped without removing the substrate from the substrate jig, preventing the adhesive layer of the extra portion of the sheet extending from the substrate from adhering to the hand, other jigs, or equipment. Therefore, productivity is not significantly impaired by bonding the adhesive layer of the extra portion of the sheet to the hand, other jigs, devices, etc. Therefore, the productivity can be improved.

It is a figure which shows typically schematic structure of the shaping | molding apparatus which concerns on this invention. It is a sectional side view which shows schematic structure of 1st Embodiment of the shaping | molding apparatus which concerns on this invention. (A)-(c) is a fragmentary sectional view which shows the operation | movement procedure of the shaping | molding apparatus shown in FIG. FIG. 3 is a side sectional view showing an operation procedure of a molding method subsequent to FIG. 2 of the molding apparatus shown in FIG. 2. (A), (b) is a fragmentary sectional view which shows schematic structure and operation | movement procedure of 2nd Embodiment of the shaping | molding apparatus based on this invention. (A), (b) is a fragmentary sectional view which shows schematic structure and an operation | movement procedure of 3rd Embodiment of the shaping | molding apparatus based on this invention. (A), (b) is a fragmentary sectional view which shows the operation | movement procedure of 4th Embodiment of the shaping | molding method based on this invention.

  Hereinafter, a molding apparatus and a molding method according to the present invention will be described in detail with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

  1-4 is a figure which shows 1st Embodiment of the shaping | molding apparatus of this invention, and the code | symbol 1 is a shaping | molding apparatus in these figures. This forming apparatus 1 is of a hot plate heating system, and as shown in FIGS. 1 and 2, a lower frame 2 having a space (accommodating space R) in which a base material jig 60 can be accommodated, and the lower frame 2 The heating plate 3 is provided so that the heating surface 3a can be brought into close contact with the frame upper edge 2a. And the resin-made sheet | seat 4 is arrange | positioned between the lower frame 2 and the hot platen 3, This sheet | seat 4 is thermoformed and it becomes the structure made to adhere | attach on the base material 10. FIG. Here, the lower frame 2 and the hot plate 3 are arranged vertically, and the hot plate 3 is arranged on the upper side with respect to the lower frame 2.

As shown in FIG. 2, the lower frame 2 is made of a metal member and forms an accommodation space R surrounded by the peripheral wall portion 21 in a plan view, and is on the peripheral wall portion 21 side of the base 22 serving as a bottom portion. A large number of vent holes 2b, 2b... Communicating with the accommodation space R are formed on the (outer peripheral side). These vent holes 2b are connected to a vacuum tank 5 equipped with a vacuum pump 51 shown in FIG. 1, and are configured to depressurize the accommodation space R by driving the vacuum pump 51 and performing vacuum suction during molding. .
As shown in FIG. 2, the seat 4 can be fixed to the upper end (the frame upper edge 2 a) of the peripheral wall portion 21 of the lower frame 2 so as to close the opening of the accommodation space R.
Further, the lower frame 2 is provided on a slidable base 6 that can slide on the floor, and can be moved back and forth with respect to the lower molding position of the hot plate 3 as shown in FIG.

  The heating plate 3 has a flat plate shape in which the heating surface 3a has a smooth plane, and is formed in a shape larger than the lower frame 2 in plan view. The hot plate 3 is provided so as to be movable in the vertical direction so as to move closer to and away from the lower frame 2 disposed at the lower molding position (so as to be able to contact and separate), and in a state of moving downward. The lower frame 2 is arranged in close contact with the frame upper edge 2a.

  As shown in FIG. 2, the heat plate 3 is provided with a plurality of heaters 31, 31... On the upper surface 3c side, and a plurality of vent holes 3b that open to the heating surface 3a. As shown in FIG. 1, these vent holes 3 b are connected to a vacuum tank 5 provided with the vacuum pump 51 for vacuum-suctioning the heating surface 3 a side and a pressurized tank 7 for storing compressed air by a compressor 71. That is, by providing the vacuum tank 5, the pressure reduction loss can be reduced.

Under such a configuration, at the time of thermoforming, the vacuum tank 5 maintained in a vacuum state is opened and vacuum suction is performed from the lower frame 2 side, or compressed air is supplied from the pressurized tank 7 to heat the heating surface 3a. It is the structure which can be pressurized toward the accommodation space R side.
In addition, you may make it raise a vacuum degree by making it suck | suck directly by the drive of the vacuum pump 51, without providing the vacuum tank 5. FIG.

  As shown in FIG. 2, the base material jig 60 is made of metal or the like disposed on the base 22, and the base material 10 made of resin or the like is attached to and held on the base material jig 60. . Further, as shown in FIG. 3A, the base material jig 60 is formed so that the shape in plan view is slightly smaller than that of the base material 10. Therefore, the base material 10 is held by the base material jig 60 in a state in which the outer peripheral portion extends outside the side peripheral surface of the base material jig 60 and covers the upper part of the side peripheral surface of the base material jig 60. ing. That is, the base material jig 60 is formed and arranged so that the side peripheral surface thereof is inside the outer peripheral surface of the base material 10.

  Further, in the present embodiment, the base material jig 60 can be moved up and down with respect to the base 22, that is, can be moved between a state where it is in contact with or close to the upper surface of the base 22 and a state where it is sufficiently separated. ing. Specifically, a plurality of coil springs 61 as urging means are provided on the bottom surface side of the base material jig 60. Each of the coil springs 61 is accommodated in an accommodation recess 62 formed and arranged at an appropriate interval on the outer peripheral portion of the bottom surface of the base material jig 60, and the other end is arranged in contact with the upper surface of the base 22. It is installed. With such a configuration, the base material jig 60 is urged by the coil spring 61 in a direction away from the upper surface of the base 22, and therefore, as shown in FIG. 2 and FIG. It is in a state where it floats a predetermined distance from the base 22.

  In the present embodiment, the compressed air is introduced into the accommodation space R by the pressurized tank 7 provided with the compressor 71, whereby the base material 10 is held by the base material jig 60, as will be described later. In a state where the sheet 4 is covered and adhered, the sheet 4 is pressed by the introduced compressed air and is lowered together with the base material jig 60 to the base 22 side. In the present embodiment, the air pressure of the compressed air from the pressurized tank 7 is used as the pressing means, and the moving means is configured together with the urging means (coil spring 61).

  Further, as shown in FIG. 3A, a pressing portion 63 is disposed and fixed on the base 22 so as to surround the base material jig 60 in the present embodiment. The pressing portion 63 is an annular or substantially annular shape having an upper surface as a pressing surface, and a housing portion 64 formed of a through hole or a recess having a shape corresponding to the planar view shape of the base material jig 60 is formed therein. Yes. Since the base material jig 60 is stored in the storage portion 64, the pressing portion 63 is arranged outside the side peripheral surface of the base material jig 60. Such a pressing portion 63 is arranged so as not to block the vent hole 2b of the lower frame 2.

  In this embodiment, the pressing portion 63 is formed separately from the base 22 and is disposed and fixed on the base 22, but may be formed integrally with the base 22. That is, a concave portion that accommodates the base material jig 60 may be formed directly on the base 22 to serve as the accommodating portion 64, and the outside thereof may function as the pressing portion 63.

  Under such a configuration, the upper surface of the pressing portion 63, that is, the pressing surface, is arranged to face the bottom surface 10 a of the outer peripheral portion of the base material 10 that extends outward from the side peripheral surface of the base material jig 60. ing. In addition, since the base material jig 60 is in a state of being lifted by a predetermined distance from the base 22 at a normal time (when not pressed), the pressing surface of the pressing portion 63 is a base material at a normal time (when not pressed). 10 is separated from the bottom surface 10a.

  Also, with such a configuration, the moving means moves the base material 10 on the base material jig 60 toward the pressing surface of the pressing portion 63, and the bottom surface 10a of the base material 10 via the sheet 4 as will be described later. Is brought into contact with the pressing surface (pressing portion 63) and pressed.

  The sheet 4 is a known multilayer sheet having a printing layer and a protective film or a carrier film provided on the front side thereof, and having an adhesive layer on the back side of the printing layer. As shown in FIG. 2, the outer peripheral portion 4 a of the sheet 4 is fixed to the frame upper edge 2 a of the lower frame 2 in a horizontal state by a fixing means (not shown). The base material 10 side (the lower surface 4b side) of the sheet 4 is an adhesive layer, and a gap is formed between the lower surface 4b and the base material 10 in a state of being fixed to the lower frame 2. ing. The gap between the base material 10 and the hot plate 3 (sheet 4) can be formed, for example, if it is about 5 mm. By reducing this gap, the recess (housing space R) of the lower frame 2 is minimized. Can be limited.

  Then, the molding apparatus 1 performs the adsorption / heating operation by the hot plate 3 and the pressure reducing operation in the accommodation space R below the sheet 4 in a state where the lower frame 2 and the hot plate 3 are in close contact with each other with the sheet 4 interposed therebetween. And a molding operation means (not shown) for stopping the adsorption operation by the hot plate 3 after a predetermined time from the start of these operations and releasing or pressurizing the space between the hot plate 3 and the sheet 4. I am doing. That is, in the molding apparatus 1, the base material 10 held on the base material jig 60 by the pressure reducing means including the lower frame 2, the hot plate 3, the vacuum tank 5, and the pressure tank 7 is used. An adhering means for adhering the sheet 4 is configured. The molding operation means includes, for example, a control circuit for performing the operation.

Next, a molding method using the molding apparatus 1 will be described.
First, as shown in FIGS. 1 and 3A, a pressing portion 63 is arranged and fixed on the base 22 of the lower frame 2, and a base material jig 60 is arranged in the accommodating portion 64. The base material 10 is set on the material jig 60, and the base material 10 is applied and held on the base material jig 60 (holding process). In this state, the base material jig 60 is biased upward by the action of the coil spring 61 and floats on the base 22.
Subsequently, the sheet 4 is placed on the frame upper edge 2 a of the lower frame 2 and is brought into close contact with the lower frame 2. That is, the sheet 4 is fixed to the frame upper edge portion 2 a of the peripheral wall portion 21 of the lower frame 2 so as to close the opening of the accommodation space R.

Then, the lower frame 2 on which the base material 10 is set is moved to the lower molding position of the hot plate 3.
Next, as shown in FIG. 2, the hot plate 3 is moved downward, and the outer peripheral portion of the heating surface 3 a is brought into close contact with the frame upper edge portion 2 a of the lower frame 2 via the sheet 4. At this time, the sheet 4 is disposed in a state where the entire upper surface is substantially in contact with the heating surface 3 a of the hot plate 3, and the outer peripheral portion 4 a is sandwiched between the lower frame 2 and the hot plate 3.

Subsequently, the pressure between the hot plate 3 and the sheet 4 is reduced, and the sheet is adsorbed on the heating surface 3a to be heated. In parallel with this heating step, the storage space R below the seat 4 is decompressed.
Specifically, the heating plate 3 is heated by the heater 31, the vacuum tank 5 is opened, and the sheet 4 is moved to the heating surface 3 a side of the heating plate 3 through the vent hole 3 b (arrow in FIG. 2). Vacuum suction in the P1 direction). Thereby, the sheet 4 is adsorbed on the heating surface 3a, and the adsorbed sheet 4 is heated.

  Further, during the heating, the lower frame 2 opens the vacuum tank 5 as shown in FIG. 4 and sucks the sheet 4 in a direction (arrow P2 direction) in which the sheet 4 moves downward through the vent hole 3b. As a result, the air in the accommodation space R below the seat 4 is sucked in the direction of the arrow E1 in FIG. 2, and the accommodation space R is decompressed to a high vacuum state.

Next, the adsorption operation of the sheet 4 is stopped in a state where the decompression operation of the accommodation space R is maintained, and the space between the hot plate 3 and the sheet 4 is released to the atmosphere or pressurized toward the lower frame 2 side.
Specifically, the sheet 4 adsorbed on the hot plate 3 is heated to a predetermined temperature, and after a predetermined time has elapsed, the suction operation is stopped by stopping the vacuum suction on the hot plate 3 side. Thereby, since the space between the hot plate 3 and the sheet 4 is opened to the atmosphere, a pressure difference is generated between the upper and lower spaces across the sheet 4. Therefore, as shown in FIG. 4, the sheet 4 softened by heating is separated from the heating surface 3 a of the hot plate 3 and is in the direction of arrow E <b> 2 toward the base 22 side (base material 10 side) of the lower frame 2 on the lower side of the sheet 4. And is pressed against the surface of the substrate 10 to cover and bond (bonding process).

  At that time, since the inside of the accommodation space R is uniformly depressurized, the sheet 4 is formed from the outer peripheral surface of the base material 10 to the bottom surface 10a of the outer peripheral portion of the base material 10, as shown in FIG. It winds up to a part of the side peripheral surface of the tool 60 to cover them, and further covers and adheres to the upper surface of the pressing portion 63. However, the bottom surface 10a of the outer peripheral portion of the base material 10 has a small width and a small adhesion area, and the sheet 4 is bent from the side peripheral surface of the base material 10 to the bottom surface 10a. Since the sheet 60 is bent over the side peripheral surface of the tool 60, the sheet 4 is not pressure-bonded to the bottom surface 10a in this state. That is, the sheet 4 does not have sufficient adhesive strength with respect to the bottom surface 10a in this state. Similarly, the sheet 4 is not bonded to the side peripheral surface of the base material jig 60 with sufficient adhesive strength.

Here, even if the sheet 4 adheres to the base material 10 in this way, in this state, the base material jig 60 is not applied with pressure enough to lower the base material jig 60. The floating state is maintained by the coil spring 61 without descending.
When the space between the hot plate 3 and the seat 4 is opened to the atmosphere, the compressed air is ejected from the vent hole 3b of the hot plate 3 by switching from the vacuum tank 5 to the pressurized tank 7 shown in FIG. The inside of R may be pressurized. However, the pressing force at that time is set to a pressure sufficiently smaller than the biasing force of the coil spring 61 biasing the base material jig 60 so that the base material jig 60 does not descend.

  Thereafter, compressed air having a preset pressure is introduced into the accommodation space R from the pressurized tank 7 shown in FIG. The pressure of the compressed air to be introduced (preset pressure), that is, the air pressure is sufficiently higher than the pressure when the space between the hot plate 3 and the sheet 4 is first opened to the atmosphere or pressurized toward the lower frame 2 side. A large pressure, that is, a pressure larger than the biasing force of the coil spring 61 that biases the base material jig 60 is used.

  When compressed air having a preset pressure is introduced from the pressurized tank 7 into the accommodation space R in this way, the compressed air presses the sheet 4 located on the entire opening side of the accommodation space R, thereby the sheet 4 The base material jig 60 is pressed together with the base material 10 via. Then, as described above, since the pressure (pneumatic pressure) of the compressed air is larger than the urging force of the coil spring 61, the base material 10 is held by the base material jig 60 as shown in FIG. It descends in the state.

  In this way, when the base material 10 is pressed and lowered, and the base material jig 60 is also pressed and lowered at the same time, the pressing portion 63 is arranged on the base 22 so as to face the bottom surface 10a of the outer peripheral portion of the base material 10. Therefore, the pressing portion 63 moves relatively to the bottom surface 10a side of the base material 10, contacts the sheet 4 adhered on the bottom surface 10a, presses it, and presses it. That is, the sheet 4 is sandwiched between the bottom surface 10a and the pressing surface (upper surface) of the pressing portion 63, and the sheet 4 is crushed to press the sheet 4 to the bottom surface 10a (crimping step).

  Then, after maintaining this state for a predetermined time, the introduction of compressed air from the pressurized tank 7 is stopped, and the inside of the accommodation space R is returned to atmospheric pressure again. Then, by releasing from the pressurized state (pressed state), the base material jig 60 rises again by the action of the coil spring 61 and is in a state of floating from the base 22. Accordingly, the pressing portion 63 is separated from the bottom surface 10a of the base material 10, and the pressure bonding of the sheet 4 to the bottom surface 10a is finished.

  When the bonding process and the crimping process are thus completed, the hot plate 3 is moved upward, and the lower frame 2 is moved laterally together with the gantry 6 shown in FIG. Then, by removing the completed molded product (the base material 10 coated and bonded with the sheet 4) from the base material jig 60 and taking it out from the accommodation space R, a series of molding operations by the molding apparatus 1 of the present embodiment is performed. finish. The obtained molded product is sent to the trimming process and the sheet 4 is trimmed to become a final molded product (finished product).

In such a molding apparatus 1 and a molding method using the same, the sheet 4 is bonded to the bottom surface 10 a by pressing the sheet 4 to the bottom surface 10 a of the outer peripheral portion of the base material 10 by the pressing portion 63. Strength can be increased. Therefore, the peeling can be prevented and a defect due to the peeling of the sheet 4 can be prevented.
Further, the sheet 4 can be crimped without removing the base material 10 from the base material jig 60, and the adhesive layer of the extra portion of the sheet 4 extending from the base material 10 can be applied to hands, other jigs, devices, etc. Since adhesion is prevented, the adhesive layer of the extra sheet 4 is bonded to the hand, other jigs, devices, etc., so that the productivity is not greatly impaired, and therefore the productivity is improved. Can be planned.

  Further, the moving means for moving the pressing portion 63 relative to the bottom surface 10 a of the outer peripheral portion of the base material 10 is constituted by an urging means including the coil spring 61 and a pressing means including air pressure from the pressurizing tank 7. Therefore, the sheet 4 is easily and reliably placed on the bottom surface 10a of the outer peripheral portion of the base material 10 by pressing the base material 10 with the pressing means against the urging means and moving the base material 10 to the pressing portion 63 side. It can be crimped to.

In this embodiment, the coil spring 61 is used as the biasing means, but an elastic body such as rubber may be used instead.
In the present embodiment, the urging means and the pressing means are provided as the moving means. However, instead of such a moving means, a moving means that allows the substrate jig 60 to move up and down may be used. Good. As this moving means, for example, a known air cylinder mechanism that allows the base material jig 60 to move up and down can be used. However, in that case, when the base material jig 60 is lowered by the air cylinder mechanism, the base material 10 is placed on the base material jig 60 so that the base material 10 is also lowered together with the base material jig 60. It is necessary to provide a fixing mechanism, for example, a fixing mechanism by vacuum suction or the like.

FIGS. 5A and 5B are views showing a second embodiment of the molding apparatus of the present invention.
The molding apparatus shown in FIG. 5 is different from the molding apparatus 1 shown in FIGS. 1 to 4 in that instead of using air pressure by the pressurized tank 7 as the pressing means in the moving means, The hot plate 3 as a pressing mechanism is used.

  That is, in this embodiment, a pressing jig 65 made of resin, metal, or the like is provided separately from the hot plate 3 and the lower frame 2. The holding jig 65 has a recess 65a that engages with the outer surface of the base material 10 so as to substantially cover the outer surface of the base material 10, and is moved onto the base material 10 on the base material jig 60 by a moving mechanism (not shown). It is made to adhere to the base material 10. Further, the pressing jig 65 may be manually attached to the base material 10 without being configured to be automatically attached to the base material 10 by the moving mechanism.

  In the molding method using the molding apparatus having such a holding jig 65, after the sheet 4 is bonded to the base material 10 as shown in FIG. The accommodation space R of the frame 2 is opened. Then, the holding jig 65 is attached to the base material 10 to which the sheet 4 is bonded, as shown in FIG.

  Next, as shown in FIG. 5 (b), the hot plate 3 is lowered again so as to function as a press mechanism, whereby the pressing jig 65 is pressurized and lowered. Then, the pressing force applied to the substrate 10 side via the pressing jig 65, that is, the pressing force by the hot plate 3 becomes a pressure larger than the urging force of the coil spring 61, so that the substrate jig 60 holds the substrate 10. It descends in the state that was.

  In this way, the base material jig 60 is lowered, and the base material 10 is also pressed and lowered at the same time, so that the pressing portion 63 is relatively moved toward the bottom surface of the base material 10 as in the first embodiment. It moves to the 10a side and the sheet | seat 4 adhere | attached on this bottom face 10a is crimped | bonded. That is, the sheet 4 is sandwiched between the bottom surface 10a and the pressing surface (upper surface) of the pressing portion 63, and the sheet 4 is crushed to thereby press the sheet 4 to the bottom surface 10a.

  And after maintaining this state for a predetermined time, the hot platen 3 is raised again. Then, by releasing from the pressed state, the base material jig 60 is lifted again by the action of the coil spring 61 and floats from the base 22. Accordingly, the pressing portion 63 is separated from the bottom surface 10a of the base material 10, and the pressure bonding of the sheet 4 to the bottom surface 10a is finished.

  When the bonding step and the pressure bonding step are completed in this manner, the pressing jig 65 is removed from the base material 10, and the molded product (the base material 10 coated and bonded with the sheet 4) is thereafter treated in the same manner as in the first embodiment. By removing from the base material jig 60 and taking out from the accommodation space R, a series of molding operations is completed. Then, a trimming process is performed on the obtained molded product to obtain a final molded product (finished product).

Even in such a molding apparatus 1 and a molding method using the same, the sheet 4 is bonded to the bottom surface 10a by pressing the sheet 4 to the bottom surface 10a of the outer peripheral portion of the base material 10 by the pressing portion 63. Strength can be increased. Therefore, the peeling can be prevented and a defect due to the peeling of the sheet 4 can be prevented.
Further, the sheet 4 can be crimped without removing the base material 10 from the base material jig 60, and the adhesive layer of the extra portion of the sheet 4 extending from the base material 10 can be applied to hands, other jigs, devices, etc. Since adhesion is prevented, the adhesive layer of the extra sheet 4 is bonded to the hand, other jigs, devices, etc., so that the productivity is not greatly impaired, and therefore the productivity is improved. Can be planned.

6A and 6B are views showing a third embodiment of the molding apparatus of the present invention.
The molding apparatus shown in FIGS. 6A and 6B is different from the molding apparatus 1 shown in FIGS. 1 to 4 in that a substrate jig 60 having a recess 60a is used. .

  That is, as shown in FIG. 6A, the base material jig 60 of the present embodiment has a recess 60a formed on the side of the base 22 from the bottom surface 10a of the outer peripheral portion of the base material 10 on its side peripheral surface. Yes. The concave portion 60a is formed in a groove shape on the entire circumference of the side peripheral surface of the base material jig 60. From the substantially same height position as the bottom surface 10a of the deposited base material 10, the concave portion 60a is below (the pressing portion 63). Side) with a predetermined width (predetermined height) and a predetermined depth. Here, the width (predetermined width) and depth (predetermined depth) of the recess 60a are set such that a part of the sheet 4 can be released and accommodated during the crimping process, as will be described later, and obtained in advance through experiments and simulations. And designed.

In the molding method using the molding apparatus using the base material jig 60 having such a recess 60a, after the sheet 4 is adhered to the base material 10 as shown in FIG. The base material 10 is pressed by the pressing means, and the base material jig 60 is lowered while holding the base material 10.
Then, as in the first embodiment, the pressing portion 63 moves relatively to the bottom surface 10a side of the base material 10, and the sheet 4 adhered on the bottom surface 10a as shown in FIG. 6 (b). It abuts and presses and crimps. That is, the sheet 4 is sandwiched between the bottom surface 10a and the pressing surface (upper surface) of the pressing portion 63, and the sheet 4 is crushed to thereby press the sheet 4 to the bottom surface 10a.

  At that time, since a part of the sheet 4 is located between the bottom surface 10a of the base material 10 and the pressing surface (upper surface) of the pressing portion 63, this portion extends to the base material jig 60 side by pressure bonding. And folded into a bent portion S. In the case of the first embodiment or the second embodiment, such a bent portion S extends from the bottom surface 10a of the base material 10 when the base material 10 is removed from the base material jig 60 after the crimping process. It becomes. Therefore, the bent portion S does not remain in the finished product by being removed in the subsequent trimming process.

  However, if such a bent portion S is present between the bottom surface 10a of the base material 10 and the pressing surface of the pressing portion 63 at the time of pressure bonding, the sheet 4 may contact the bottom surface 10a of the base material 10 unevenly. A slight pressure difference is generated between the position where the bent portion is present and the position where the bent portion is not present, and there is an undeniable possibility of unevenness in the adhesion of the sheet 4 to the bottom surface 10a of the substrate 10.

Therefore, in the present embodiment, since the recess 60a is formed in the base material jig 60, the bent portion S is released into the recess 60a during crimping as shown in FIG. I am doing so.
Therefore, in the molding apparatus and the molding method using the same according to the present embodiment, the sheet 4 is formed with respect to the bottom surface 10a of the base material 10 by allowing the bent portion S to escape into the recess 60a during the crimping. Can be brought into contact uniformly and pressure-bonded with a uniform pressure. Therefore, the adhesive strength of the sheet 4 that adheres to the bottom surface 10a of the base material 10 can be further increased, the peeling thereof can be prevented, and defects due to the peeling of the sheet 4 can be more reliably prevented.

  In this embodiment as well, in the same manner as in the first embodiment and the second embodiment, when the base material 10 is removed from the base material jig 60 after the crimping process, the bent portion S is the base material 10. It will be in the state extended from the bottom face 10a. Therefore, by removing in the subsequent trimming process, the bent portion S is removed from the finished product and does not remain.

  Moreover, although this embodiment demonstrated the case where the base-material jig | tool 60 in which the recessed part 60a was formed was applied to the shaping | molding apparatus 1 and shaping | molding method of 1st Embodiment, it applies to the shaping | molding apparatus and shaping | molding method of 2nd Embodiment. You can also

FIGS. 7A and 7B are views showing a fourth embodiment of the molding method of the present invention.
The molding method shown in FIGS. 7A and 7B is different from the molding method by the molding apparatus 1 shown in FIGS. 1 to 4 in that a substrate 10 having a concave portion is used. is there.

  That is, as shown to Fig.7 (a), the base material 10 of this embodiment has the base material jig 60 side of the bottom face 10a of the outer peripheral part extended outside from the side peripheral surface of the base material jig 60, ie ,. A concave step portion (concave portion) 10b is formed on the inner peripheral edge. This step portion 10b is formed in an annular shape around the entire inner periphery of the bottom surface 10a of the base material 10, and is formed by cutting out from the bottom surface 10a of the base material 10 to a predetermined width and a predetermined depth above it. It has been done. Here, the width (predetermined width) and the depth (predetermined depth) of the stepped portion 10b are such that a part of the sheet 4 can be escaped and accommodated during the crimping process, similarly to the concave portion 60a of the previous embodiment. And obtained and designed in advance through experiments and simulations.

In the molding method using the base material 10 having such a stepped portion 10b, the sheet 4 is bonded to the base material 10 as shown in FIG. The base material 10 is pressed by the means, and the base material jig 60 is lowered while holding the base material 10.
Then, as in the first embodiment, the pressing portion 63 moves relatively to the bottom surface 10a side of the base material 10, and the sheet 4 adhered on the bottom surface 10a as shown in FIG. It abuts and presses and crimps. That is, the sheet 4 is sandwiched between the bottom surface 10a and the pressing surface (upper surface) of the pressing portion 63, and the sheet 4 is crushed to thereby press the sheet 4 to the bottom surface 10a.

At that time, since a part of the sheet 4 is located between the bottom surface 10a of the base material 10 and the pressing surface (upper surface) of the pressing portion 63, this portion extends to the base material jig 60 side by pressure bonding. And folded into a bent portion S.
Therefore, in this embodiment, by forming the step portion 10b on the base material 10, the bent portion S escapes into the step portion 10b during crimping as shown in FIG. I am doing so.

  Therefore, even in the molding method of the present embodiment, as in the third embodiment, the bent portion S is allowed to escape into the stepped portion 10b during the crimping, so that the bottom surface 10a of the base material 10 is formed. On the other hand, the sheet 4 can be brought into uniform contact with each other and can be pressed with uniform pressure. Therefore, the adhesive strength of the sheet 4 that adheres to the bottom surface 10a of the base material 10 can be further increased, the peeling thereof can be prevented, and defects due to the peeling of the sheet 4 can be more reliably prevented.

  In the present embodiment, as in the first to third embodiments, when the base material 10 is removed from the base material jig 60 after the crimping process, the bent portion S is the base material 10. It will be in the state extended from the bottom face 10a. Therefore, by removing in the subsequent trimming process, the bent portion S is removed from the finished product and does not remain.

  Moreover, although this embodiment demonstrated the case where the base material 10 in which the step part 10b was formed was applied to the shaping | molding method using the shaping | molding apparatus 1 of 1st Embodiment, it applies to the shaping | molding method of 2nd Embodiment. You can also.

As mentioned above, although embodiment of the shaping | molding apparatus and shaping | molding method of this invention was demonstrated, this invention is not limited to these embodiment, A various change is possible in the range which does not deviate from the main point of this invention.
For example, in the above embodiment, as a mechanism for adhering the sheet 4 to the base material 10, a hot plate heating method is used. However, for example, a radiation heating method may be used.

  Moreover, in the said embodiment, although the structure which moves the base material 10 (base material jig 60) with respect to the press part 63 was employ | adopted as a moving means to move the base material 10 and the press part 63 relatively, The substrate 10 (substrate jig 60) may be fixed and the pressing portion 63 may be moved, or both may be moved together.

  Further, in the above embodiment, as shown in FIG. 1, the lower frame 2 of the molding apparatus can be advanced and retracted with respect to the lower molding position of the hot plate 3 as shown in FIG. However, for example, a rotary system that rotates in a circular shape in plan view may be used.

DESCRIPTION OF SYMBOLS 1 ... Molding apparatus, 2 ... Bottom frame, 3 ... Heat plate, 4 ... Sheet, 10 ... Base material, 10a ... Bottom surface, 10b ... Step part (concave part), 22 ... Base, 60 ... Base material jig, 60a ... Recess, 61 ... Coil spring (biasing means), 63 ... Pressing part, 65 ... Pressing jig, R receiving space (space), S ... Bending part

Claims (8)

A molding apparatus that coats and adheres a sheet having an adhesive layer to a substrate,
A base material jig provided on a base for holding the base material, and a sheet having an adhesive layer coated on the base material held on the base material jig is bonded to the base material. An adhesive means,
The base material jig is configured so that the outer peripheral portion of the base material extends outward from the side peripheral surface of the base material jig so that the side peripheral surface is inside the outer peripheral surface of the base material. Formed smaller than the material,
The base is provided with a pressing portion facing the bottom surface of the outer peripheral portion of the base material extending outward from the side peripheral surface of the base material jig,
The movement which makes the said press part contact | abut to the bottom face of the outer peripheral part of the said base material through the said sheet | seat so that contact / separation is possible by moving the said base material and the said press part on the said base material jig relatively A molding apparatus comprising means.   The moving means is held on the base material jig and biasing means for biasing the base material jig in a direction in which the base material held on the base material jig is separated from the pressing portion. The molding apparatus according to claim 1, further comprising: a pressing unit that presses the base material in a direction in which the base member is in contact with the pressing portion.   The molding apparatus according to claim 2, wherein the pressing means uses air pressure.   The molding apparatus according to claim 2, wherein the pressing unit includes a pressing jig and a pressing mechanism that presses the pressing jig.   The concave part is formed in the side peripheral surface of the said base material jig from the bottom face of the outer peripheral part of the said base material to the said base side, The Claim 1 characterized by the above-mentioned. Molding equipment. A holding method for holding a base material on a base material jig, and an adhesion step for covering and adhering a sheet having an adhesive layer on the base material,
In the holding step, the side peripheral surface of the base material jig is located inside the outer peripheral surface of the base material so that the outer peripheral portion of the base material extends outward from the side peripheral surface of the base material jig. Holding the base material on the base material jig,
After the bonding step, the pressing part disposed opposite to the bottom surface of the outer peripheral part of the base material is moved relative to the bottom surface of the outer peripheral part of the base material, whereby the sheet bonded on the bottom surface is A molding method comprising a crimping step of crimping to the bottom surface.   The molding apparatus according to claim 6, wherein as the base material jig, a jig in which a concave portion is formed on the side of the pressing portion from the bottom surface of the outer peripheral portion of the base material is used.   The said base material uses what formed the concave part in the said base material jig side of the bottom face of the outer peripheral part extended outside from the side peripheral surface of the said base material jig, or characterized by the above-mentioned. 8. The molding apparatus according to 7.

Images