JP6007028B2 - Belt type molding equipment - Google Patents

Description

  The present invention includes a belt mechanism that includes a plurality of rollers and a metal endless belt wound around the rollers, and the endless belt travels along a predetermined circulation path, and travels in an upper portion of the circulation path. The present invention relates to a belt-type molding apparatus for producing a belt-shaped or flat-plate shaped product by curing a flowable molding material supplied on an endless belt while being transported by the endless belt.

  Generally, it is made of a heat-melting or thermoplastic material, a thermosetting material, or a material that hardens over time. A belt-type molding apparatus having a belt mechanism having an endless belt is used. In this type of belt-type molding apparatus, normally, a fluid molding material supplied on a metal endless belt running on the upper portion of the circulation path is cured while being transferred by the endless belt. I have to.

  In addition, a belt press type belt-type molding apparatus including two belt mechanisms arranged so as to face each other vertically is also used (see, for example, Patent Document 1). In a belt-type molding apparatus including two belt mechanisms, first, a liquid molding material is supplied to the upper surface of the endless belt of the lower belt mechanism, and the molding material is cured on the endless belt. Thereafter, the molding material is introduced into the gap between the endless belt of the upper belt mechanism and the endless belt of the lower belt mechanism, and is sandwiched and molded by both endless belts.

  By the way, in the belt-type molding apparatus having one belt mechanism or two belt mechanisms as described above, when the liquid molding material is supplied to the upper surface of the endless belt of the belt mechanism or the lower belt mechanism, It is necessary to prevent the molding material from flowing out in the width direction of the endless belt (hereinafter referred to as “belt width direction”), or to control or regulate the dimension of the molding material in the belt width direction to a predetermined dimension. Therefore, in the conventional belt type molding apparatus of this type, an air curtain is provided which has an auxiliary facility such as a retainer for blocking outflow of the molding material in the belt width direction, or prevents the molding material from flowing out in the belt width direction by an air flow. Ancillary equipment for forming

JP 11-155541 A

  However, when this type of belt-type molding machine is equipped with ancillary equipment such as a retainer that blocks outflow of molding material in the belt width direction, the width, thickness, or height of the molding material on the endless belt is highly accurate. Although it can be controlled or regulated by this, there is a problem that the structure of the belt type molding apparatus becomes complicated because the structure of the incidental equipment is complicated. Further, when such a retainer is used, there is a problem that when the thickness of the molded product is changed, the retainer must be replaced in accordance with the thickness of the molded product each time.

  In addition, when ancillary equipment for forming an air curtain is provided, the structure of the ancillary equipment is simple, but it is not possible to control or regulate the width, thickness or height of the molding material on the endless belt with high accuracy. There is a problem that it is difficult. That is, the viscosity of the liquid molding material, the specifications of the nozzle for supplying the liquid molding material, the discharge pressure of air, etc. are comprehensively adjusted so that the width, thickness or height of the molding material is constant or uniform. Is extremely difficult.

  The present invention has been made to solve the above-described conventional problems, and is intended to prevent the flow of a molding material having fluidity in the belt width direction or to control the size of the molding material in the belt width direction. It is an object to be solved to provide a belt-type molding apparatus that can control the width, thickness, or height of the molding material on the endless belt with high accuracy without providing the incidental equipment having a complicated structure. .

A belt-type forming apparatus according to a first aspect of the present invention made to solve the above-described problem has a plurality of rollers and a metal ring-shaped (endless) main belt wound around the rollers. A main belt mechanism in which the main belt travels along a predetermined circulation path is provided. This belt-type molding device is a belt-shaped or plate-shaped molded product that is cured while being transferred by a main belt, and having a flowable molding material supplied on the main belt running on the upper part of the circulation path. Manufacturing. Further, the belt-type molding apparatus includes a pair of front material feeders and a rear material feeder. Here, the front material feeder is disposed above the main belt mechanism and spaced apart from each other in the width direction of the main belt (hereinafter referred to as “belt width direction”), and the main material feeder traveling on the upper portion of the circulation path. A molding material having fluidity is discharged to the upper surface of the belt in a string shape or a column shape. As a result, two weir portions parallel to each other are formed on the main belt, which extend downstream with respect to the molding material transfer direction and are formed by curing the molding material. The rear material feeder is disposed above the main belt mechanism on the downstream side of the front material feeder in the molding material transfer direction, and a fluid molding material is provided on the entire upper surface of the main belt between the two weir portions. Supply.

The belt-type molding apparatus according to the first aspect of the present invention further includes a sub-belt mechanism disposed on the upper side of the main belt mechanism on the downstream side of the rear material feeder in the molding material transfer direction. The sub-belt mechanism has a plurality of rollers and a metal ring-shaped sub-belt wound around the rollers, and the sub-belt travels along a predetermined circulation path. Here, the molding material supplied between the two dam portions and the two dam portions is transferred to the downstream side while being sandwiched between the main belt and the sub belt facing each other.

Belt press type belt molding apparatus having a Sabuberuto mechanism that provides a lower cover film supply mechanism, and an upper cover film supply mechanism. Here, the lower cover film supply mechanism continuously supplies and adheres the lower cover film to the outer peripheral surface of the main belt on the upstream side of the front material feeder in the molding material transfer direction. In addition, the upper cover film supply mechanism continues the upper cover film on the outer peripheral surface of the sub belt before the sub belt cooperates with the main belt and sandwiches the two dam portions and the molding material supplied between the two dam portions. Supply and adhere closely . Belts type molding apparatus, that provides a lower water injection nozzle, and an upper water injection nozzle. Here, the lower water spray nozzle sprays water on the outer peripheral surface of the main belt in the form of mist or spray before the lower cover film comes into close contact with the main belt. The upper water spray nozzle sprays water on the outer peripheral surface of the sub belt in the form of a mist or spray before the upper cover film comes into close contact with the sub belt.

The belt-type molding apparatus according to the first aspect of the present invention is inward from both sides in the belt width direction with respect to the molding material on the main belt between the rear material feeder and the sub-belt mechanism in the molding material transfer direction. It is preferable to provide a pair of air blowing mechanisms for ejecting air.

The belt type molding apparatus according to the second aspect of the present invention includes the same main belt mechanism as the belt type molding apparatus according to the first aspect of the present invention, a front material feeder, and a rear material feeder. . Then, molding material Ri material der thermofusible or thermoplastic, between the front material feeder and the rear material feeder with respect to the shaped material transport direction, that features a belt cooling mechanism for cooling the main belt. Moreover, the belt type molding apparatus according to the third aspect of the present invention includes the same main belt mechanism as the belt type molding apparatus according to the first aspect of the present invention, a front material feeder, and a rear material feeder. ing. Then, molding material Ri material der thermosetting, between the front material feeder and the rear material feeder with respect to the shaped material transport direction, that features a belt heating mechanism for heating the main belt. In the belt-type molding apparatus according to the second or third aspect of the present invention, it is more preferable that a belt temperature control mechanism capable of arbitrarily cooling or heating the main belt is provided.

  According to the present invention, the flowable molding material supplied from the rear material feeder to the upper surface of the main belt is held between the pair of weir portions formed on the upper surface of the main belt, and the weir in the belt width direction. It does not flow outside the section. Therefore, it is not necessary to provide an auxiliary facility (for example, a retainer) having a complicated structure for preventing the flowable molding material supplied from the rear material feeder from flowing out in the belt width direction. The structure can be simplified. In this way, since the material of the molded product itself is used as a weir for the molding material having fluidity, it is possible to prevent or suppress foreign matter from being mixed into the molding material or the molded product.

  Moreover, according to this invention, the space | interval of both dam parts can be freely set by changing the position of the belt width direction of the front side material feeder. Further, if the material supply speed of the rear material feeder is appropriately set, the height of the molding material having fluidity held between the two weir portions can be made to coincide with the height of the both weir portions. Therefore, by appropriately setting the position of the front material feeder in the belt width direction and the material supply speed of the rear material feeder, a desired uniform width and a desired uniform thickness are not formed on the upper surface of the main belt. A molding material having a height can be formed with high accuracy. In addition, since the components of the weir portion formed from the flowable molding material discharged from the front material feeder and the flowable molding material supplied from the rear material feeder are the same, the distance between the two weir portions When the molding material having the fluidity is solidified, a molding product having a uniform composition in which the molding material having the fluidity and the two weir portions are integrated is formed.

1 is a schematic side view of a belt press type belt-type forming apparatus according to Embodiment 1 of the present invention. FIG. FIG. 2 is a plan view around a material supply mechanism of the belt-type molding apparatus shown in FIG. 1. FIG. 2 is a side view around a material supply mechanism of the belt-type molding apparatus shown in FIG. 1. It is a typical perspective view around the material supply part of the belt type molding apparatus shown in FIG. (A)-(d) is sectional drawing of the cover film or molding material in the middle of manufacture of a molded product, (e) is sectional drawing of the completed molded product. It is a typical side view of the belt type shaping | molding apparatus which concerns on Embodiment 2 of this invention.

(Embodiment 1)
FIG. 1 shows a belt press type belt-type molding apparatus for manufacturing a strip-shaped or flat-plate (plate-shaped) molded product having a predetermined shape, which is covered or packaged with a cover film, according to Embodiment 1 of the present invention. This is shown schematically. As will be described in detail later, this belt-type molding apparatus P1 has two endless belt mechanisms (hereinafter referred to as “belt mechanisms”) arranged one above the other, and is made of a heat-melting or thermoplastic material or thermosetting material. A molding material made of a material or a material that hardens over time due to a chemical reaction (hereinafter referred to as a “time-curing material”) is pressed up and down to form a strip or a plate, and the molding material An apparatus for producing a molded product by covering or packaging with a cover film.

  In the following, the case where the molding material is a heat-meltable or thermoplastic material will be described. However, the belt-type molding apparatus P1 according to Embodiment 1 of the present invention is made of a thermosetting material or a time-curing material by preferably changing the temperature control (cooling, heating, etc.) of the molding material. Of course, a molded product can be produced from the molding material.

  Here, the “heat-meltable or thermoplastic material” is a material or molding material that is solid at room temperature but softens or melts and becomes flowable as the temperature rises. It has the property that the viscosity becomes lower. That is, in such a molding material, the viscosity can be adjusted by changing the temperature in the molten state or the softened state. As such a molding material, for example, a substance having a relatively high viscosity in the molten state such as pitch, hot melt, phenol resin, epoxy resin, rubber, or wax, surfactant, fats and oils, inorganic salts (sodium chloride, And a substance having a relatively low viscosity in a molten state such as magnesium chloride. Needless to say, the hot-melt or thermoplastic molding material that is the subject of the present invention is not limited to the above specific examples.

  On the other hand, the “cover film” is a thin film material that covers or packages the main body of the molding material or molded product. As this cover film, a film formed of a substance having a melting point lower than that of the main body of the molded product in which the cover film is used is used. Further, the material of the cover film is selected from a body part of a molded product in which the cover film is used and a substance having compatibility when both are in a molten state. That is, the material of the cover film is preferably selected according to the melting point of the material of the body part of the molded product to be manufactured and the compatibility of both in the molten state. As such a cover film, for example, a film of polyolefin such as polyethylene or polypropylene, or a film of nylon, PET, PVC or the like can be used.

  Thus, since the molded product is covered or packaged with a cover film having a melting point lower than that of the main body and compatible with the main body in the molten state, when the main body of the molded product is melted, the cover film Is reliably melted and dissolved in the liquid main body, and does not remain as a solid foreign substance in the molded product. The material of the cover film is preferably set so that the quality of the molded product is not substantially lowered even if the cover film is dissolved in the main body, and the purpose of use of the molded product is not substantially hindered. Of course.

  Hereinafter, a specific configuration and function of the belt-type molding apparatus P1 will be described. As shown in FIG. 1, the belt-type molding apparatus P1 includes a frame structure R that forms a skeleton, a lower belt mechanism B1 having a lower drive roller 1 and a lower driven roller 2 (“main” in the claims) Belt mechanism ”), an upper belt mechanism B2 having an upper drive roller 3 and an upper driven roller 4 (corresponding to“ sub-belt mechanism ”in the claims), a material supply mechanism F, and a product take-out And a mechanism D. Here, the lower belt mechanism B1, the upper belt mechanism B2, the material supply mechanism W, and the product take-out mechanism D are all firmly supported by the frame structure R.

  The lower belt mechanism B1 is disposed in the lower half of the frame structure R. In the lower belt mechanism B1, an annular or endless lower steel belt 5 (corresponding to a “main belt” in the claims) is wound around the lower drive roller 1 and the lower driven roller 2. ing. During the operation of the belt-type molding apparatus P1, the lower drive roller 1 is driven by the motor 6 (electric motor) via the first drive belt 7 at a predetermined rotational speed in the clockwise direction in the positional relationship in FIG. Driven by rotation. As a result, the lower steel belt 5 travels in a clockwise direction in a positional relationship in FIG. 1 at a predetermined traveling speed on a circulation path determined by the lower drive roller 1 and the lower driven roller 2. .

  Further, the lower belt mechanism B1 includes a lower pressing mechanism (not shown) that presses or urges the lower steel belt 5 that travels linearly in the horizontal direction in the upper portion of the circuit path. Is provided. The lower pressing mechanism applies a pressing force to the inner peripheral surface or the back surface of the lower steel belt 5 by, for example, an urging force or hydraulic pressure of a spring, thereby appropriately pressing or urging the lower steel belt 5 upward. . Further, the lower belt mechanism B1 has a low-temperature heat transfer medium (for example, 0 to 10 ° C.) on the inner peripheral surface or the back surface of the lower steel belt 5 running linearly on the upper portion of the circulation path. A lower heat transfer medium supply mechanism 8 for injecting water) and cooling the lower steel belt 5 is provided. The lower driven roller 2 is formed in a drum shape, and a lower drum cooler 9 for cooling the drum of the lower driven roller 2 is disposed therein. Note that the lower drum cooler 9 cools the lower driven roller 2 by injecting low-temperature (for example, 0 to 10 ° C.) cooling water onto the drum inner peripheral surface, for example.

  The upper belt mechanism B2 is disposed in the upper half portion of the frame structure R so as to face the lower belt mechanism B1 above the lower belt mechanism B1. In the upper belt mechanism B <b> 2, a ring-shaped or endless upper steel belt 10 (corresponding to a “sub-belt” in the claims) is wound around the upper drive roller 3 and the upper driven roller 4. During the operation of the belt-type molding apparatus P1, the upper drive roller 3 is identical to the lower drive roller 1 in the counterclockwise direction in FIG. 1 by the motor 6 via the second drive belt 11. It is rotationally driven at a peripheral speed of. Accordingly, the upper steel belt 10 travels in the same manner as the lower steel belt 5 in the counterclockwise direction in the positional relationship in FIG. 1 along the rotation path determined by the upper drive roller 3 and the upper driven roller 4. Drive around at speed.

  Further, the upper belt mechanism B2 is provided with an upper pressing mechanism (not shown) that presses or urges the upper steel belt 10 that travels linearly in the horizontal direction in the lower portion of the circuit path. It has been. The upper pressing mechanism applies a pressing force to the inner peripheral surface or the back surface of the upper steel belt 10 by, for example, an urging force or hydraulic pressure of a spring, thereby appropriately pressing or urging the upper steel belt 10 downward. Further, the upper belt mechanism B2 has a low-temperature heat transfer medium (for example, 0 to 10 ° C.) on the inner peripheral surface or the back surface of the upper steel belt 10 running linearly along the lower portion of the circulation path. An upper heat transfer medium supply mechanism 12 that cools the upper steel belt 10 is provided. The upper driven roller 4 is formed in a drum shape, and an upper drum cooler 13 for cooling the drum of the upper driven roller 4 is disposed therein. The upper drum cooler 13 cools the upper driven roller 4 by injecting low-temperature (for example, 0 to 10 ° C.) cooling water onto the inner peripheral surface of the drum, for example.

  The lower belt mechanism B1 and the upper belt mechanism B2 are configured such that the lower steel belt 5 traveling linearly on the upper portion of the circulation path and the lower portion of the circulation track linearly travel. The upper steel belt 10 is preferably disposed so as to maintain a gap or gap corresponding to the thickness of the molded product to be manufactured. In addition, the said space | interval or gap | interval of the lower steel belt 5 and the upper steel belt 10 changes arbitrarily and easily within a predetermined range (for example, 5-50 mm) according to the thickness of the molded product which should be manufactured. be able to.

  Thus, during the operation of the belt-type molding apparatus P1, while pressing the portion where the belt mechanisms B1 and B2 face each other in the vertical direction, that is, the molding material (work in process) that is in the process of manufacturing the molded product described later, At the portion to be transferred, the lower steel belt 5 and the upper steel belt 10 are horizontally cooled and run in a straight line at the same speed in the same direction while maintaining a predetermined interval or gap therebetween. In the following, for convenience, the side to which the molding material is supplied (the left side in FIG. 1 and the upstream side of the molding material transfer) with respect to the direction in which the molding material is transferred (left and right in the positional relationship in FIG. 1). It is called “front”, and the side from which the molding material or molded product is discharged (the right side in FIG. 1 and the downstream side of the molding material transfer) is called “rear”. Further, the left side and the right side of the belt type molding apparatus P1 as viewed from the rear side are referred to as “left” and “right”, respectively. Therefore, for example, FIG. 1 and FIG. 3 show the left side surface of the belt-type molding apparatus P1.

  As is clear from FIG. 1, the upper drive roller 3 is disposed slightly in front of the lower drive roller 1. A product take-out mechanism D for transferring the molding material or molded product discharged from both belt mechanisms B1 and B2 to a predetermined post-processing device is disposed slightly behind the upper drive roller 3 and above the lower drive roller 1. ing. Further, the upper driven roller 4 is arranged on the lower belt mechanism B1 considerably behind the lower driven roller 2 in order to secure a space for arranging a material supply mechanism F described in detail later. Yes.

  A lower film roller 15 around which a lower cover film 14 is wound in a roll shape is disposed slightly forward of the lower driven roller 2. The lower film roller 15 is attached to the frame structure R. During the operation of the belt-type molding apparatus P1, the lower cover film 14 wound around the lower film roller 15 includes a lower driven roller 2 and a lower opposing roller 16 disposed to face the lower driven roller 2. And continuously pulled out from the lower film roller 15.

  Further, the lower cover film 14 is an opposing portion or a sandwiching portion between the lower driven roller 2 and the lower opposing roller 16, and the lower steel belt 5 and the lower side that are in contact with the outer peripheral surface of the lower driven roller 2. It is sandwiched between the outer peripheral surface of the opposing roller 16 and is brought into close contact with the outer peripheral surface of the lower steel belt 5. Thereafter, the lower cover film 14 is transferred rearward while being in close contact with the lower steel belt 5. That is, behind the lower driven roller 2, the lower cover film 14 and the lower steel belt 2 move rearward at the same speed while maintaining a state of being in close contact with each other. As described above, since the drum of the lower driven roller 2 is cooled by the lower drum cooler 9, the lower steel belt 5 is cooled at the portion in contact with the outer peripheral surface of the lower driven roller 2, It becomes a low temperature state. Accordingly, the lower cover film 14 that is in close contact with the lower steel belt 5 is also in a low temperature state.

  Further, in the front-rear direction, water is sprayed on the outer peripheral surface of the lower steel belt 5 in contact with the outer peripheral surface of the lower driven roller 2 in the space between the lower driven roller 2 and the lower film roller 15. A lower water spray nozzle 17 for spraying is disposed. During operation of the belt-type molding apparatus P1, the outer peripheral surface of the lower steel belt 5 in which the mist or spray water sprayed or injected from the lower water injection nozzle 17 is not yet in close contact with the lower cover film 14 Adhere to. Thus, with the water adhering to the lower steel belt 5, the lower cover film 14 and the outer peripheral surface of the lower steel belt 5 can be brought into close contact with each other without mixing air or bubbles between them. When air or air bubbles are mixed between the two, when the molding material is sandwiched between the lower steel belt 5 and the upper steel belt 10 and pressed in the vertical direction, the air or air bubbles are present. There is a possibility that a hole or a pinhole is generated in the lower cover film 14.

  An upper film roller 19 around which an upper cover film 18 is wound in a roll shape is disposed slightly above the upper driven roller 4. The upper film roller 19 is attached to the frame structure R. During the operation of the belt-type molding apparatus P1, the upper cover film 18 wound around the upper film roller 19 is continuously formed by the upper driven roller 4 and the upper facing roller 20 disposed to face the upper driven roller 4. Pulled out from the upper film roller 19.

  The upper cover film 18 is an opposing portion or sandwiching portion between the upper driven roller 4 and the upper opposing roller 20, and the outer peripheral surfaces of the upper steel belt 10 and the upper opposing roller 20 that are in contact with the outer peripheral surface of the upper driven roller 4. Between the upper steel belt 10 and the upper steel belt 10. Thereafter, the upper film 18 is transferred substantially downward along the outer peripheral surface of the upper driven roller 4 while being in close contact with the outer peripheral surface of the upper steel belt 10, and then transferred rearward together with the upper steel belt 10. That is, behind the upper driven roller 4, the upper cover film 18 and the upper steel belt 10 move rearward at the same speed while maintaining a close contact state. As described above, since the drum of the upper driven roller 4 is cooled by the upper drum cooler 13, the upper steel belt 10 is cooled at a portion in contact with the outer peripheral surface of the upper driven roller 4 to be in a low temperature state. . Accordingly, the upper cover film 18 that is in close contact with the upper steel belt 10 is also in a low temperature state.

  Further, in the vertical direction, in the space between the upper driven roller 4 and the upper film roller 19, the upper water that sprays or sprays water on the outer peripheral surface of the upper steel belt 10 that is in contact with the outer peripheral surface of the upper driven roller 4. An injection nozzle 21 is provided. During operation of the belt type molding apparatus P1, mist or spray water sprayed or sprayed from the upper water spray nozzle 21 adheres to the outer peripheral surface of the upper steel belt 10 that is not yet in close contact with the upper cover film 18. . Thus, the water adhering to the upper steel belt 10 allows the upper cover film 18 and the outer peripheral surface of the upper steel belt 10 to be brought into close contact with each other without mixing air or bubbles between them. When air or air bubbles are mixed between the two, there is a possibility that a hole or a pinhole is formed in the upper cover film 18 for the same reason as in the case of the lower cover film 14.

  Between the lower driven roller 2 and the upper driven roller 4 with respect to the front-rear direction, the lower cover film on the lower steel belt 5 running above the lower belt mechanism B1 is located above the lower belt mechanism B1. On 14, a material supply mechanism F for supplying a material (molding material) of a molded product is disposed. As will be described in detail later, the material supply mechanism F includes a left-side material feeder 22 and a right-side material that are disposed at a predetermined interval in the width direction of the lower steel belt 5 (hereinafter referred to as “belt width direction”). A feeder 23 and a rear material feeder 24 disposed behind the both material feeders 22 and 23 are provided. Both the left and right material feeders 22 and 23 and the rear material feeder 24 are supplied with the same molding material having fluidity from a material supply source 25 via material supply devices 26 and 27, respectively.

  As shown in FIGS. 2 and 3, the left material feeder 22 and the right material feeder 23 are supply means for a cylindrical molding material extending vertically, and are provided on the lower steel belt 5 from the nozzle at the lower end thereof. A molding material having fluidity with respect to the side cover film 14 is discharged in the form of a strand or a column, for example, a square column or a column. The dimensions of the discharged strand-shaped or columnar molding material in the belt width direction or in the left-right direction, that is, the dimension in the left-right direction of the discharge port of the nozzle can appropriately form the weir portions 30, 31 described later. It is preferably set within a possible range (for example, 5 to 30 mm). The left-side material feeder 22 and the right-side material feeder 23 are arranged at a predetermined interval in the belt width direction, that is, the left-right direction. In addition, the said space | interval of the left side material feeder 22 and the right side material feeder 23 can be arbitrarily changed within a predetermined range (for example, 350-480 mm) according to the width dimension of the molded product which should be manufactured.

  On the other hand, the rear material feeder 24 is a means for supplying a molding material extending in the belt width direction, that is, in the left-right direction, and is uniform with a predetermined width across the left and right with respect to the lower cover film 14 on the lower steel belt 5. In addition, the molding material having fluidity is supplied in the form of a sheet (flow film) over the entire surface. The width (sheet width) at which the rear material feeder 24 supplies the molding material can be arbitrarily changed within a predetermined range (for example, 350 to 480 mm) according to the width dimension of the molded product to be manufactured. it can.

  As shown in FIG. 4, when the belt-type forming apparatus P1 is in operation, the lower steel belt 5 (see FIG. 5 (a)) on which the lower cover film 14 is in close contact is lowered on the upper side of the circulation path. It moves rearward from the front end of the side belt mechanism B1. And the molding material which has fluidity | liquidity is continuously discharged from the left side material feeder 22. FIG. This molding material is solid at room temperature, but softens or melts as the temperature rises, and becomes a heat-meltable or thermoplastic material (hereinafter referred to as “thermoplastic material”) whose viscosity decreases as the temperature increases. It is. That is, a molding material made of a thermoplastic material can be adjusted in viscosity by changing its temperature in a molten state or a softened state. The temperature of the molding material is preferably set so that when the molding material abuts on the lower cover film 14, the molding material has a viscosity that hardly spreads in the left-right direction and can generally maintain the width during ejection. Is done.

  The molding material made of a thermoplastic material is cooled by the low temperature lower steel belt 5 after coming into contact with the lower cover film 14, and as it moves backward, the temperature decreases and the viscosity increases. It solidifies. The molding material that is continuously discharged and solidified in this way is the left side that extends linearly in the front-rear direction on the lower cover film 14 by the rearward movement of the lower steel belt 5 or the lower cover film 14. The dam portion 30 is formed.

  The width of the left weir 30 formed in this way is substantially the same as the left and right dimensions of the columnar molding material discharged from the left material feeder 22 or the left and right dimensions of the nozzle outlet of the left material feeder 22. . That is, the width of the left dam 30 can be freely adjusted by changing the left and right dimensions of the discharge port of the nozzle of the left material feeder 22. Further, the height of the left dam 30 is determined by the moving speed of the lower steel belt 5 and the supply speed of the molding material of the left material feeder 22. Therefore, the height of the left dam 30 can be freely adjusted by changing the material supply speed of the left material feeder 22 according to the moving speed of the lower steel belt 5. In the specific example shown in FIG. 4, the left dam portion 30 is a square columnar strand extending in the front-rear direction, but the shape of the left dam portion 30 is not limited to this, and is any shape. Also good. For example, the left dam portion 30 may be a semi-cylindrical shape or a triangular prism shape.

  Similarly to the case of the left-side material feeder 22, the right-side material feeder 23 also has a lower steel belt 5 on which the lower cover film 14 is in close contact with the upper side of the circulation path during the operation of the belt-type forming device P1. The right dam portion 31 is formed on the lower cover film 14 so as to extend linearly in the front-rear direction. Therefore, on the lower film 14 on the lower steel belt 5 moving rearward, as shown in FIG. 5B, the shapes (for example, width and height) are equal to each other and straight toward the rear. A pair of parallel weir portions 30 and 31 extending in a shape are formed.

  Then, the rear material feeder 24 is placed on the lower cover film 14 between the left dam portion 30 and the right dam portion 31 formed on the lower film 14 behind the left and right material feeders 22 and 23. On the other hand, a molding material made of a thermoplastic material is continuously supplied downward in the form of a sheet (liquid film). The molding material made of a thermoplastic material is cooled by the low temperature lower steel belt 5 after coming into contact with the lower cover film 14, and as it moves backward, the temperature decreases and the viscosity increases. It solidifies. Then, the molding material continuously supplied and solidified in this way is moved downward between the left dam portion 30 and the right dam portion 31 by the rearward movement of the lower steel belt 5 or the lower cover film 14. Formed on the side cover film 14 is a molding material main body 32 extending in the front-rear direction in a strip shape.

  Here, the width (sheet width) of the sheet-shaped molding material supplied on the lower cover sheet 14 is equal to or slightly shorter than the interval between the left material feeder 22 and the right material feeder 23 ( For example, 1 to 3 mm) is set. Further, the thickness (sheet thickness) and the supply speed of the sheet-like molding material supplied onto the lower cover sheet 14 are such that the height of the molding material main body 32 is the height of both the left and right dam portions 30, 31. Or slightly higher. Thus, as shown in FIG. 5C, the rear side of the rear material feeder 24 has a substantially uniform height in which the molding material main body 32 is sandwiched between the left dam 30 and the right dam 31. Molding materials 30 to 32 are formed. In this state, since the molding materials 30 to 32 are not completely solidified, they have fluidity or plasticity. In addition, the upper surface of the molding material main body 32 must be flat or slightly convex upward, and it is not preferable to be concave.

  As shown in FIGS. 2 and 3 again, a left air blowing mechanism 28 is disposed on the left side of the lower steel belt 5 between the rear material feeder 24 and the upper driven roller 4 with respect to the front-rear direction, and left air on the right side. A spraying mechanism 29 is provided. The left-side air blowing mechanism 28 forms an air curtain by blowing air to the molding materials 30 to 32 from a plurality or a plurality of nozzles, and even if the molding material main body 32 has fluidity, the molding material main body 32 32 is prevented from flowing to the left beyond the left dam portion 30. Similarly, the right air blowing mechanism 29 prevents the molding material body portion 32 from flowing out to the right beyond the right dam portion 30.

  As shown in FIG. 1 again, the molding material 30 to 32 in which the molding material body 32 is sandwiched between the left dam 30 and the right dam 31 on the lower cover sheet 14 includes the lower belt mechanism B1. And the upper belt mechanism B2. At that time, when the molding materials 30 to 32 pass through the upper driven roller 4 and the upper surface of the lower steel belt 5 or the opposed portions of the outer peripheral surface, the upper cover film is placed on the upper surfaces of the molding materials 30 to 32 by the upper driven roller 4. 18 is brought into contact. Then, behind the upper driven roller 4, the molding materials 30 to 32 whose lower surface is covered with the lower cover film 14 and whose upper surface is covered with the upper cover film 18 are interposed between the lower steel belt 5 and the upper steel belt 10. It is sandwiched and pressed up and down.

  The molding materials 30 to 32 are cooled by the lower steel belt 5 and the upper steel belt 10 when being pressed by the lower steel belt 5 and the upper steel belt 10 and transferred backward. As a result, as shown in FIG. 5 (d), the two weir portions 30, 31 and the molding material main body portion 32 that constituted the molding materials 30 to 32 were completely solidified and integrated while fusing each other. It becomes the molded product main body 33. Thereafter, the molded product main body 33 whose lower surface is covered with the lower cover film 14 and whose upper surface is covered with the upper cover film 18 is discharged rearward from both belt mechanisms B1 and B2.

  The molded product main body 33 discharged from both belt mechanisms B1 and B2 is transferred to the product take-out mechanism D. This product take-out mechanism D covers both side surfaces of the molded product main body portion 33 with excess lower cover film 14 and upper cover film 18 extending to the left and right of the molded product main body portion 33. Thus, as shown in FIG. 5E, a molded product 35 in which the molded product main body 33 is covered or packaged with the cover film 34 is completed. The molded product 35 is transferred to a predetermined post-processing facility (not shown). In the post-processing facility, for example, a long strip-shaped molded product 35 is cut into a predetermined length, and the cut portion is covered with a cover film.

  As described above, according to the belt-type molding apparatus P1 according to the first embodiment of the present invention, the fluid molding material supplied from the rear material feeder 24 to the upper surface of the lower steel belt 5 is the lower steel belt 5. It is held between the two weir portions 30 and 31 formed on the upper surface, and does not flow out of the both weir portions 30 and 31 in the belt width direction or the left-right direction. Therefore, there is no need to provide additional equipment such as a complicated retainer for preventing the flowable molding material supplied from the rear material feeder 24 from flowing out in the belt width direction, and the structure of the belt-type molding apparatus P1 is eliminated. It can be simplified. Thus, since the molding material itself of the molding product 35 is used as a weir of the molding material having fluidity, it is possible to prevent or suppress the mixing of foreign matters. Further, by appropriately setting the position of the both material feeders 22 and 23 in the belt width direction or the left and right direction and the material supply speed of the rear material feeder 24, the upper surface of the lower steel belt 5 has a desired uniform thickness. Since a molding material having a width and a desired uniform thickness or height can be formed, a molding product 35 having a desired shape can be manufactured with high accuracy.

  In addition, when manufacturing a molded product from the molding material which consists of a thermosetting material, in the belt-type shaping | molding apparatus P1 which concerns on Embodiment 1, it flows from the left and right material feeders 22 and 23, and the rear material feeder 25. A normal or low temperature molding material having the properties is supplied to the lower steel belt 5. Then, from the lower heat transfer medium supply mechanism 8 and the upper heat transfer medium supply mechanism 12, a heat transfer medium having a temperature higher than the curing temperature of the thermosetting material (for example, higher than the curing temperature of the thermosetting material, for example, 30 The lower steel belt 5 and the upper steel belt 10 are heated by spraying oil having a high temperature of -100 ° C.

(Embodiment 2)
Hereinafter, the belt-type molding apparatus P2 according to Embodiment 2 of the present invention will be described with reference to FIG. However, the belt-type molding device P2 according to the second embodiment shown in FIG. 6 has many common points with the belt-type molding device P1 according to the first embodiment shown in FIGS. Hereinafter, differences from the belt-type molding apparatus P1 according to the first embodiment will be mainly described. In the belt-type molding apparatus P2 shown in FIG. 6, the same reference numerals as those in the belt-type molding apparatus P1 are assigned to the same constituent elements as those of the belt-type molding apparatus P1 shown in FIG. .

  As shown in FIG. 6, the belt-type molding apparatus P2 according to the second embodiment does not include an upper belt mechanism. That is, the belt mechanism of the belt type molding apparatus P2 is not a double press type belt mechanism. Therefore, the molding material supplied from the left and right material feeders 22, 23 and the rear material feeder 25 to the lower steel belt 5 of the lower belt mechanism B1 is transferred while being cooled by the lower steel belt 5, The molded product 35 is obtained. About another point, it is the same as that of the case of the belt type shaping | molding apparatus P1 which concerns on Embodiment 1. FIG.

  Also in the belt-type forming apparatus P2 according to the second embodiment, basically, as in the case of the belt-type forming apparatus P1 according to the first embodiment, a desired uniform width and a desired width are formed on the upper surface of the lower steel belt 5. Therefore, a molding product 35 having a desired shape can be manufactured with high accuracy.

  P1 Belt-type molding apparatus of belt press type according to Embodiment 1, P2 Belt-type molding apparatus according to Embodiment 2, R frame structure, B1 Lower belt mechanism (main belt mechanism), B2 Upper belt mechanism (sub-belt mechanism) , F material supply mechanism, D product take-out mechanism, 1 lower drive roller, 2 lower driven roller, 3 upper drive roller, 4 upper driven roller, 5 lower steel belt (main belt), 6 motor, 7 first drive Belt, 8 lower heat transfer medium supply mechanism, 9 lower cooler, 10 upper steel belt (sub-belt), 11 second drive belt, 12 upper heat transfer medium supply mechanism, 13 upper cooler, 14 lower cover film, 15 Lower film roller, 16 Lower opposed roller, 17 Lower water jet nozzle, 18 Upper cover film, 19 Upper film roller 20 Upper counter roller, 21 Upper water injection nozzle, 22 Left material feeder, 23 Right material feeder, 24 Rear material feeder, 25 Material supply source, 26 Front material supply device 27 Rear material supply device, 28 Left air spray mechanism 29 Right air blowing mechanism, 30 Left dam part, 31 Right dam part, 32 Material main body part, 33 Molded product main body part, 34 Cover film, 35 Molded product.

Claims (4)

A main belt mechanism that has a plurality of rollers and a metal ring-shaped main belt wound around the rollers, and the main belt travels along a predetermined circulation path; A belt-type molding apparatus for producing a strip-shaped or flat-plate-shaped molded product by curing a flowable molding material supplied on the traveling main belt while being transported by the main belt,
A molding material, which is disposed above the main belt mechanism and spaced apart from each other in the width direction of the main belt, and has fluidity with respect to the upper surface of the main belt running on the upper portion of the circulation path. A pair of front material feeders that discharge in the form of strings or pillars and extend on the main belt downstream with respect to the molding material transfer direction and form two parallel weirs formed by curing the molding material;
A rear side that is disposed above the main belt mechanism on the downstream side of the front material feeder with respect to the molding material transfer direction, and that supplies the molding material having fluidity to the entire upper surface of the main belt between the two weir portions. A material feeder ,
A plurality of rollers and a metal ring-shaped sub-belt wound around the rollers are disposed opposite to the upper side of the main belt mechanism on the downstream side of the rear-side material feeder with respect to the molding material transfer direction. Has a sub-belt mechanism that travels along a predetermined circulation path,
The molding material supplied between the two dam portions and the two dam portions is transferred to the downstream side in a state of being sandwiched between the main belt and the sub belt facing each other,
The belt-type molding device further includes
A lower cover film supply mechanism that continuously supplies and adheres a lower cover film to the outer peripheral surface of the main belt on the upstream side of the front material feeder with respect to the molding material transfer direction;
Before the sub belt cooperates with the main belt to sandwich the molding material supplied between the two dam portions and the two dam portions, the upper cover film is continuously supplied to the outer peripheral surface of the sub belt. An upper cover film supply mechanism to be closely attached,
Before the lower cover film is in close contact with the main belt, a lower water injection nozzle that injects water in the form of a mist or spray on the outer peripheral surface of the main belt;
A belt type molding apparatus comprising: an upper water spray nozzle that sprays water in a mist or spray form on the outer peripheral surface of the sub belt before the upper cover film is in close contact with the sub belt. A pair of air that causes the molding material on the main belt to be blown inward from both sides in the width direction of the main belt between the rear material feeder and the sub-belt mechanism with respect to the molding material transfer direction. The belt-type molding apparatus according to claim 1, further comprising a spraying mechanism. A main belt mechanism that has a plurality of rollers and a metal ring-shaped main belt wound around the rollers, and the main belt travels along a predetermined circulation path; A belt-type molding apparatus for producing a strip-shaped or flat-plate-shaped molded product by curing a flowable molding material supplied on the traveling main belt while being transported by the main belt,
A molding material, which is disposed above the main belt mechanism and spaced apart from each other in the width direction of the main belt, and has fluidity with respect to the upper surface of the main belt running on the upper portion of the circulation path. A pair of front material feeders that discharge in the form of strings or pillars and extend on the main belt downstream with respect to the molding material transfer direction and form two parallel weirs formed by curing the molding material;
A rear side that is disposed above the main belt mechanism on the downstream side of the front material feeder with respect to the molding material transfer direction, and that supplies the molding material having fluidity to the entire upper surface of the main belt between the two weir portions. With a material feeder,
The molding material is a heat-meltable or thermoplastic material, and a belt cooling mechanism for cooling the main belt is provided between the front material feeder and the rear material feeder in the molding material transfer direction. and be behenate belt type molding apparatus. A main belt mechanism that has a plurality of rollers and a metal ring-shaped main belt wound around the rollers, and the main belt travels along a predetermined circulation path; A belt-type molding apparatus for producing a strip-shaped or flat-plate-shaped molded product by curing a flowable molding material supplied on the traveling main belt while being transported by the main belt,
A molding material, which is disposed above the main belt mechanism and spaced apart from each other in the width direction of the main belt, and has fluidity with respect to the upper surface of the main belt running on the upper portion of the circulation path. A pair of front material feeders that discharge in the form of strings or pillars and extend on the main belt downstream with respect to the molding material transfer direction and form two parallel weirs formed by curing the molding material;
A rear side that is disposed above the main belt mechanism on the downstream side of the front material feeder with respect to the molding material transfer direction, and that supplies the molding material having fluidity to the entire upper surface of the main belt between the two weir portions. With a material feeder,
Molding material is a thermosetting material, between the front material feeder and the rear material feeder with respect to the shaped material transport direction, characterized by comprising a belt heating mechanism for heating the main belt belts type molding apparatus.

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