JP2021088100A - Manufacturing method for crimped synthetic resin plate and manufacturing apparatus for crimped synthetic resin plate - Google Patents

Abstract

To provide a manufacturing method for a crimped synthetic resin plate and a manufacturing apparatus for a crimped synthetic resin plate, which can reduce an equipment cost, improve an installation efficiency of equipment, and improve a manufacturing efficiency.SOLUTION: A manufacturing method executed on a manufacturing apparatus 10 for a crimped synthetic resin plate includes: an extrusion step for extruding a synthetic resin plate 40; and a crimping step in which the synthetic resin plate 40 molded in the extrusion step is conveyed and the synthetic resin plate 40 is crimped. The crimping step includes: an air blowing process for blowing air onto the crimped synthetic resin plate 40 crimped in the crimping step; and a sizing process that defines a size and dimension of the synthetic resin plate 40 by supplying a negative pressure, and pressing the synthetic resin plate 40 against synthetic resin plate facing surfaces 24 and 25 forming a transport path part 26 of the synthetic resin plate 40 to be cooled and solidified.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method for producing a textured synthetic resin plate for producing a textured synthetic resin plate and an apparatus for producing a textured synthetic resin plate.

Conventionally, for example, a plate with a grain pattern such as a methacrylic resin has been widely used. When such a resin plate with a grain pattern is used for lighting, it prevents the glare of the light source, enables efficient lighting, and has a large decorative effect. Alternatively, it is used as a lighting cover material. The satin-like fine uneven pattern formed on the surface of the board is called a grain pattern.

Conventionally, in such a synthetic resin plate with a grain pattern, for example, an extruder and a take-up machine are arranged on a production line, the synthetic resin is heat-melted in the extruder, and the melted synthetic resin is formed into a plate shape. Along with extruding, the synthetic resin plate that has been extruded is picked up by the take-up machine, and the synthetic resin plate that is conveyed is passed through the embossing roll arranged between the extruder and the drawer plate to perform embossing on the plate surface. It is made by applying (Patent Document 1).

Japanese Unexamined Patent Publication No. 55-14262

In such a conventional method for manufacturing a textured synthetic resin plate, the synthetic resin plate is textured by being passed through a textured roll to be textured on the surface, and is pressed to be pressed. It is stretched along the length direction.
Then, in order to cool the heated synthetic resin plate, the heated synthetic resin plate is naturally cooled by being conveyed over the predetermined distance, and as a result, the synthetic resin plate is cooled and solidified. Then, in general, the widthwise end portion of the synthetic resin plate is cut off by an ear-cutting roll arranged on the upstream side of the take-up machine, and the width dimension of the synthetic resin plate is adjusted. After that, it is cut into a predetermined length by a cutting machine and commercialized.

However, in the method for producing a textured synthetic resin plate disclosed in Patent Document 1, the textured roll is composed of three rolls sequentially arranged along the transport direction. There is a problem that the equipment cost increases because the textured roll unit made of book rolls must be arranged.
Further, in order to naturally cool the textured synthetic resin plate, it is necessary to form a transport path for the synthetic resin plate over a predetermined length before reaching the cutting machine, and as a result, it is necessary to form a transport path for the synthetic resin plate. There was a problem that the manufacturing process and the entire manufacturing equipment became large, and the installation efficiency of the equipment in the factory was not good.

Further, in the prior art, the thickness at both ends of the synthetic resin plate is increased because the thickness is adjusted by utilizing the melt viscosity of the resin. Therefore, in order to match the size of the product to be manufactured, the upstream side of the take-up machine. An ear-cutting roll was placed in the roll, and the end portion of the conveyed synthetic resin roll in the width direction was cut off.
Therefore, in such a conventional technique, it is necessary to provide an end treatment step by an ear-cutting roll, and there is also a problem that the manufacturing work of the textured synthetic resin plate is complicated.

Therefore, the subject of the present invention is a method for producing a textured synthetic resin plate and an apparatus for producing a textured synthetic resin plate, which can reduce the equipment cost, improve the installation efficiency of the equipment, and improve the manufacturing efficiency. To provide.

In order to solve the above problems, the invention according to claim 1 is an extrusion step of extruding a synthetic resin plate and a texture processing in which the synthetic resin plate formed in the extrusion step is conveyed and the synthetic resin plate is textured. A method for manufacturing a textured synthetic resin plate including a step, which comprises an air blowing step of blowing air onto the textured synthetic resin plate in the textured processing step, and an air blowing step of supplying negative pressure to the above. It is characterized by having a sizing step of defining the size and dimension of the synthetic resin plate by cooling and solidifying the synthetic resin plate by pressure-contacting it with the facing surface portion of the synthetic resin plate forming a transport path portion of the synthetic resin plate. This is a method for manufacturing a textured synthetic resin plate.

Therefore, in the invention according to claim 1, it is extruded in the extrusion step, grained in the graining step, and then air is blown and cooled in the air blowing step, and the plate surface is textured by the graining. The formed grain pattern solidifies.
After that, in the sizing step, the synthetic resin plate is cooled and solidified by pressure-contacting the synthetic resin plate with the facing surface portion of the synthetic resin plate forming the transport path portion of the synthetic resin plate by supplying negative pressure. The size and size of the synthetic resin plate are defined.

The invention according to claim 2 is the invention according to claim 1, wherein the embossing step is executed by a single embossing roll and a single receiving roll. This is a method for manufacturing a synthetic resin plate.

The invention according to claim 3 is the invention according to claim 1, wherein the facing surface portion of the synthetic resin plate is formed corresponding to the width dimension and the thickness dimension of the product to be manufactured, and the negative pressure is applied to the synthetic resin plate. It is a method for manufacturing a textured synthetic resin plate, which is characterized in that it is supplied to an upper surface portion and a lower surface portion.

In the invention according to claim 3, in the invention according to claim 1, in the sizing step, the synthetic resin plate is sucked by the negative pressure supplied from the upper surface portion and the lower surface portion of the synthetic resin plate to obtain the synthetic resin. It is pressed against the plate facing surface portion, and as a result, the synthetic resin plate is formed in the width dimension and the thickness dimension of the product to be produced.

The invention according to claim 4 is a method for producing a textured synthetic resin plate, which comprises the invention according to claim 2 and includes a cooling step for further cooling the synthetic resin plate after the sizing step.

The invention according to claim 5 is arranged between an extrusion machine that extrudes a synthetic resin plate, a take-out machine that pulls out and conveys the synthetic resin plate extruded by the extruder, and the take-out machine. A textured synthetic resin plate manufacturing apparatus provided with a textured synthetic resin plate having a textured roll portion for performing texture processing on the synthetic resin plate extruded by the extrusion machine, which is provided on the downstream side in the transport direction of the textured roll portion. , An air ejection part that blows air onto the textured synthetic resin plate and a negative pressure is applied to the textured synthetic resin plate that is arranged on the downstream side in the transport direction of the air ejection portion. A textured synthetic resin plate, which is supplied and has a sizing portion for cooling and solidifying the synthetic resin plate by pressure contacting the facing surface portion of the synthetic resin plate forming a transport path portion of the synthetic resin plate. It is a manufacturing equipment.

The invention according to claim 5 is configured as a textured synthetic resin plate manufacturing apparatus, in which a plate extruded by an extrusion machine is textured by a textured roll, and then air is blown by an air ejection portion. The textured pattern formed on the surface of the synthetic resin plate is solidified by the textured processing.

After that, in the sizing portion of the synthetic resin plate, a negative pressure is supplied to the textured synthetic resin plate, and as a result, the synthetic resin plate forms a transport path portion of the synthetic resin plate. It is cooled and solidified by pressure contacting the plate facing surface portion, and the width dimension and the thickness dimension of the synthetic resin plate are defined.

The invention according to claim 6 is characterized in that, in the invention according to claim 5, the textured roll portion is composed of a single textured roll and a single receiving roll. The textured synthetic resin plate manufacturing apparatus according to claim 5.

The invention according to claim 7 is the invention according to claim 5, wherein the sizing portion has a sizing device main body portion and the transport path portion formed in the sizing device main body portion, and faces the synthetic resin plate. The surface portion is formed according to the width dimension and the thickness dimension of the manufactured product, and one end portion of the sizing device main body portion is opened to the transport path portion and the other end portion is connected to the negative pressure supply source. It is a textured synthetic resin plate manufacturing apparatus characterized in that a vent is provided.

Therefore, in the invention according to claim 7, the synthetic resin plate facing surface portion forming the transport path portion is formed corresponding to the width dimension and the thickness dimension of the manufactured product. In the sizing section, the synthetic resin plate is defined by the dimensions of the product to be manufactured.
Further, the negative pressure is supplied to the synthetic resin plate via the ventilation path.

The invention according to claim 8 is the invention according to claim 5, wherein the sizing device main body is composed of an upper portion covering the upper surface portion of the synthetic resin plate and a lower portion covering the lower surface portion of the synthetic resin plate. The ventilation passage is a textured synthetic resin plate manufacturing apparatus provided at the upper portion and the lower portion.

Therefore, in the invention according to claim 8, the upper surface portion and the lower surface portion of the synthetic resin plate are suction-pressed with respect to the synthetic resin facing surface portion by the negative pressure supplied through the air passage.

The invention according to claim 9 is the textured synthetic resin plate manufacturing apparatus according to claim 7, wherein the one end portion of the ventilation passage is provided with a groove portion that opens into the transport passage portion. Is.

Therefore, in the invention according to claim 9, the negative pressure is supplied to the synthetic resin plate through the groove.

In the invention according to claim 10, in the invention according to claim 9, the groove portion is arranged over the entire width direction of the synthetic resin plate at right angles to the transport direction of the synthetic resin plate. The embossed synthetic resin plate manufacturing apparatus according to claim 9, wherein the full-year roads are alternately formed in the upper portion and the lower portion along the transport direction of the synthetic resin plate.

Therefore, in the invention according to claim 10, since the synthetic resin plate is arranged so as to be orthogonal to the transport direction of the synthetic resin plate over the entire width direction of the synthetic resin plate, the entire width direction of the synthetic resin plate is provided. Negative pressure is supplied over the entire width direction of the synthetic resin plate, and the entire width direction of the synthetic resin plate is suction-pressed with respect to the facing surface portion of the synthetic resin plate.

The invention according to claim 11 is an apparatus for manufacturing a textured synthetic resin plate, wherein the sizing unit is arranged in a cooling tank.
Therefore, in the invention according to claim 11, the synthetic resin plate cooled and solidified in the sizing portion is further naturally cooled in the cooling tank.

In the invention according to claim 1, the invention is extruded in an extrusion step, grained in a graining step, and then air is blown and cooled in an air blowing step to form a plate surface by graining. In the sizing process, the textured pattern is solidified, and the synthetic resin plate is pressed against the facing surface of the synthetic resin plate that forms the transport path portion of the synthetic resin plate by supplying negative pressure. As a result, the synthetic resin plate is cooled and solidified to define the size and dimension of the synthetic resin plate.
Therefore, as in the prior art, in order to naturally cool the textured synthetic resin plate, it is necessary to form a transport path for the synthetic resin plate over a predetermined length before reaching the cutting machine. As a result, the manufacturing process and the entire manufacturing apparatus can be miniaturized as compared with the conventional technique, the equipment cost can be reduced, and the installation efficiency of the equipment can be improved.

In the invention according to claim 2, since the embossing step is executed by a single embossing roll and a single receiving roll, three machines are used for embossing as in the prior art. Since the roll eliminates the need for a roll unit, in addition to the effect according to claim 1, the number of parts can be reduced and the equipment cost can be reduced. As a result, the textured synthetic resin plate as a product can be reduced. It is possible to reduce the manufacturing cost of.

In the invention according to claim 3, in the sizing step, the synthetic resin plate facing surface portion is formed corresponding to the width dimension and the thickness dimension of the product to be manufactured. In order to match the size of the product to be manufactured, an ear-cutting roll is placed on the upstream side of the pick-up machine, and the step of cutting off the widthwise end of the conveyed synthetic resin roll is not required, and the grain is easily and quickly textured. It becomes possible to manufacture a processed synthetic resin plate.

In the invention according to claim 4, since a cooling step for further cooling the synthetic resin plate is provided after the sizing step, the synthetic resin plate which has been cooled and solidified in the sizing step and which has been subjected to the textured processing is further naturally cooled. By doing so, it becomes possible to commercialize the product more stably.

In the textured synthetic resin plate manufacturing apparatus according to the invention of claim 5, the synthetic resin plate that has been textured by the textured roll is cooled by blowing air by the air ejection portion and is textured. The textured pattern formed on the surface of the plate is solidified, and the synthetic resin plate is further supplied with a negative pressure to the textured synthetic resin plate at the sizing portion, and as a result, the synthetic resin plate is described as described above. The width dimension and the thickness dimension of the synthetic resin plate are defined by being cooled and solidified by pressure contacting the facing surface portion of the synthetic resin plate forming the transport path portion of the synthetic resin plate.

As a result, as in the prior art, in order to naturally cool the textured synthetic resin plate, it is necessary to form a transport path for the synthetic resin plate over a predetermined length before reaching the cutting machine. As a result, it is possible to reduce the size of the entire manufacturing apparatus as compared with the conventional technology, and it is possible to reduce the equipment cost and improve the installation efficiency of the equipment.

In the invention according to claim 6, since the textured roll portion is composed of a single textured roll and a single receiving roll, it is used for textured processing as in the prior art. In addition to the effect of claim 5, the number of parts can be reduced and the equipment cost can be reduced because the roll unit is not required due to the roll of three machines. As a result, the grain as a product is embossed. It is possible to reduce the manufacturing cost of the processed synthetic resin plate.

In the invention according to claim 7, the sizing portion has a sizing device main body portion and the transport path portion formed in the sizing device main body portion, and the synthetic resin plate facing surface portion is manufactured. Since it is formed corresponding to the width dimension and the thickness dimension of the product, in addition to the effect of the invention according to claim 5, in order to adapt to the size of the product to be manufactured as in the prior art. The step of arranging the ear-cutting roll on the upstream side of the pick-up machine and cutting off the widthwise end portion of the conveyed synthetic resin roll becomes unnecessary, and it becomes possible to easily and quickly manufacture the textured synthetic resin plate.

In the invention according to claim 8, since the ventilation passage is provided in the upper portion and the lower portion constituting the main body of the sizing device, the entire surface includes the upper surface portion and the lower surface portion of the synthetic resin plate after the embossing. A negative pressure is supplied to the surface, and the upper surface portion and the lower surface portion are in pressure contact with the synthetic resin plate facing surface portion. As a result, the synthetic resin plate is cooled and solidified, and the cooling and solidifying treatment is performed more reliably and quickly.

In the invention according to claim 9 and 10, the groove portion to which the negative pressure is supplied is arranged over the entire width direction of the synthetic resin plate at right angles to the transport direction of the synthetic resin plate. In addition, since the upper part and the lower part facing the synthetic resin plate are formed orthogonally along the transport direction, the negative pressure is evenly supplied over the entire width direction of the synthetic resin plate. In the synthetic resin plate, the entire area of the synthetic resin plate when being conveyed in the sizing device is pressed against the facing surface portion of the synthetic resin plate. As a result, the synthetic resin plate is cooled and solidified more reliably and quickly.
Further, since the full-year path is formed alternately along the transport direction in the upper portion and the lower portion, the resistance force due to the suction force generated in the synthetic resin plate due to the negative pressure supply is reduced, and the smooth transport is performed. It becomes possible.

In the invention according to claim 11, since the sizing section is arranged in the cooling tank, the synthetic resin plate cooled and solidified in the sizing section is further naturally cooled in the cooling tank to make the product more stable. It becomes possible to change.

It is a figure which shows the embossed synthetic resin plate manufacturing apparatus and the manufacturing process of the embossed synthetic resin plate which concerns on embodiment of this invention. It is a figure which shows the upper part and the lower part of the sizing device main body part which constitutes the sizing part which concerns on embodiment of this invention. It is a figure which shows the upper part of the sizing apparatus main body which constitutes the sizing part which concerns on embodiment of this invention. It is a figure which shows the lower part of the sizing apparatus main body which constitutes the sizing part which concerns on embodiment of this invention.

Hereinafter, preferred embodiments for carrying out the present invention will be described in detail exemplary with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the present embodiment are not intended to limit the scope of the present invention to those, unless otherwise specified. Absent.

FIG. 1 is a diagram showing a textured synthetic resin plate manufacturing apparatus according to an embodiment of the present invention.

In FIG. 1, the textured synthetic resin plate manufacturing apparatus 10 includes a hopper 11, an extrusion machine 12, a textured roll portion 13 including a textured roll 14 and a receiving roll 15, an air ejection portion 16, a sizing portion 20, and a cooling tank 17. The pick-up machine 18 and the negative pressure supply source 30 are provided.

The hopper 11 stores the resin pellets as the resin material and supplies the resin pellets to the extruder 12 by connecting to the extruder 12 via a connecting pipe.

Examples of the resin material include biopolycarbonate resin. The resin materials used in the present embodiment include methacrylic resin, acrylic resin, aramid resin, polyolefin resin, polyamide resin, polyester resin, polycarbonate resin, polyarylate resin, polyacetal resin, polyphenylene sulfide resin, fluororesin, and polyacetal. It may be a resin, a polyglycolic acid resin, a polyimide resin, a polyamideimide resin, a polylactic acid resin, or the like.

The extrusion machine 12 heats and melts the resin charged in the hopper 11, forms a plate, and extrudes the resin.

In the present embodiment, the textured roll portion 13 is arranged between the extrusion machine 12 and the take-up machine 18 in the immediate vicinity downstream of the extrusion machine 12, and is textured on the synthetic resin plate 40 extruded by the extrusion machine 12. Apply processing.
In the present embodiment, the textured roll portion 13 is composed of a single textured roll 14 and a single receiving roll 15. The textured roll 14 and the receiving roll 15 hold the plate-shaped resin extruded from the extruder 12 while rotating, and impart a pattern formed on the surface of the textured roll 14 to the surface of the plate-shaped resin. Then, the textured synthetic resin plate 40 is manufactured.

The grain in the present embodiment refers to a satin-like fine uneven pattern attached to the surface of the manufactured synthetic resin plate 40. Examples of the pattern include irregularities and wrinkles, and the pattern may be a regular pattern or an irregular pattern. For example, regular irregularities or wrinkles are preferable, and leather-like irregularities or wrinkles are particularly preferable because they give a high-class feeling.

The depth of one pattern is 1 to 1000 micrometers (μm), preferably 5 to 500 micrometers. A more preferred pattern depth is 10 to 300 micrometers. When the depth of one pattern is smaller than 1 micrometer, the recognition as a pattern is weakened and the surface design is lowered. On the contrary, when the depth of one pattern is larger than 1000 micrometers, it is not recognized as a pattern, and the surface design tends to be low.

By forming such a grain on the surface of the synthetic resin plate 40, the synthetic resin plate 40 can be given a surface design and a sense of quality. The textured synthetic resin plate 40 is suitable for lighting equipment-related products, parts or housings of electronic devices such as televisions, VCRs, personal computers, cameras, digital cameras, instrument panels, automobile interior parts such as door trims, and the like. used.

The air ejection portion 16 is provided near the downstream side in the transport direction 50 when viewed from the textured roll portion 13, and air is blown onto the textured synthetic resin plate 40 to cool it. The air ejection portion 16 is provided in the longitudinal direction at the tip of a portion having a V-shaped cross section, and has an outlet. As a result, the grain pattern can be fixed to the synthetic resin plate 40 immediately after the grain processing without being rubbed in the sizing portion 20 and the grain pattern disappearing.

The sizing unit 20 is arranged on the downstream side in the transport direction 50 when viewed from the air ejection unit 16. The sizing unit 20 is installed in the cooling tank 17, and further cools and solidifies the synthetic resin plate 40 and performs sizing.
The take-up machine 18 pulls out and conveys the synthetic resin plate 40 extruded by the extrusion machine 12. That is, the cooled and sized synthetic resin plate 40 is picked up by the pick-up machine 18. The details of the sizing unit 20 will be described in detail with reference to FIGS. 2 to 4.

FIG. 2 is a diagram showing an upper portion 22 and a lower portion 23 of a sizing device main body portion constituting the sizing unit according to the embodiment of the present invention, and FIG. 3 is a diagram showing the upper portion 22 and the lower portion 23 constituting the sizing unit according to the embodiment of the present invention. It is a figure which shows the upper part 22 of the sizing device main body part, and FIG. 4 is a figure which shows the lower part 23 of the sizing device main body part which constitutes the sizing part which concerns on embodiment of this invention.

As shown in FIGS. 1 and 2, the sizing unit 20 has a sizing device main body 21 and a transport path 26 formed in the sizing device main body 21.
In the present embodiment, the sizing device main body 21 is formed in a substantially rectangular parallelepiped shape as a whole, and as shown in FIG. 2, a rectangular parallelepiped upper portion covering the upper surface portion 41 (see FIG. 1) of the synthetic resin plate 40. It is composed of 22 and a similarly rectangular parallelepiped lower portion 23 that covers the lower surface portion 42 (see FIG. 1) of the synthetic resin plate 40.
The synthetic resin plate 40 to which the textured pattern is imparted is movably arranged in the transport path portion 26 formed between the upper portion 22 and the lower portion 23. Further, in the present embodiment, the sizing device main body 21 is arranged along the width direction of the synthetic resin plate 40 in the transport direction, and the two sizing device main bodies 21 are arranged along the transport direction. It is connected in a row.

Note that FIG. 2A is a drawing obtained by extracting the upper portion 22 and the lower portion 23 in FIG. 1, and FIG. 2B is a view of the sizing device main body 21 shown in FIG. 2 from the right side of the paper. It is a front view, (c) is an AA sectional view in (a), and (d) is a BB sectional view in (a). Further, (e) is a view of the back surface portion of the upper portion 22 viewed from the lower side, and (f) is a view of the front surface portion of the lower portion 23 viewed from the upper side.

Further, the sizing device main body 21 is provided with a ventilation path 28 having one end opened in the transport path 26 and the other end connected to the negative pressure supply source 30. The ventilation passage 28 is a passage that conducts to the outside from the groove portion 27, which will be described later, and is provided in the upper portion 22 and the lower portion 23.

A negative pressure supply source 30 (not shown) connected to the air passage 28 via a hose or the like performs "vacuum drawing" in the vertical direction of the synthetic resin plate 40 held in the transport path portion 26, and the transport path portion 26 The air present in the air is discharged to the outside.
That is, the sizing unit 20 supplies a negative pressure to the textured synthetic resin plate 40 to form the synthetic resin plate 40 in the transport path portion 26 of the synthetic resin plate 40. , 25 is pressure-welded to further cool and solidify.
In this case, the synthetic resin plate facing surface portions 24 and 25 are formed corresponding to the width dimension and the thickness dimension of the manufactured product.
The synthetic resin plate facing surface portion 24 is a surface formed on the upper 22 side, and the synthetic resin plate facing surface portion 25 is a surface formed on the lower 23 side.

A plurality of groove portions 27 that open into the transport passage portion 26 are provided at one end of the ventilation passage 28.

The upper portion 22 is provided with two groove portions 27a and 27b on the lower surface facing the lower portion 23 via the transport path portion 26.

The lower portion 23 is provided with three groove portions 27c, 27d, and 27e on the upper surface facing the upper portion 22 via the transport path portion 26.
The groove portion 27 is formed along the length direction of the upper portion 22 and the lower portion 23, and as a result, is arranged so as to be orthogonal to the transport path 26 as a whole.

As shown in FIGS. 2A and 2E, the two groove portions 27a and 27b formed in the upper portion 22 are two of the three groove portions 27b, 27c and 27d formed in the lower portion 23 at both ends. It is arranged at the same position in the transport direction as the groove portions 27c and 27e of the above. In the figure, the diagonal line S is a “texture” pattern attached to the synthetic resin plate 40 by grain processing.
Since the upper and lower groove portions 27a, 27b, 27c, 27d, and 27e are provided above and below the transport path portion 26, each of the upper and lower groove portions 27a, 27b, 27c, 27d, and 27e is provided on both sides of the synthetic resin plate 40 to which the transport path portion 26 is transported in the sizing device main body 21. By suction and cooling, pressure contact can be made with the synthetic resin plate facing surfaces 24 and 25.

In the present embodiment, of the three groove portions 27 formed in the lower portion 23, one groove portion 27d in the center does not have a groove portion facing the upper portion 22, and the lower surface portion of the synthetic resin plate 40. Only 42 is sucked and cooled.

The reason why the lower portion 23 has more grooves than the upper portion 22 is as follows.
When negative pressure suction is performed from the upper 22 side, even if the groove 27 is present on the lower 23 side, the suction from the upper 22 side and the resulting cooling become stronger, and the upper surface 41 and the lower surface 42 of the synthetic resin plate 40 are cooled. There is a possibility that the progress of the plastic will be different and warpage will occur due to shrinkage.
Therefore, in order to balance the circumstances on the upper surface portion 41 side and strengthen the cooling of the lower surface portion 42, the number of groove portions 27 formed in the lower portion 23 is configured to be larger than that of the upper surface portion 22. .. Thereby, the warp of the synthetic resin plate 40 can be effectively prevented.

Each of the groove portions 27 provided in the upper portion 22 and the lower portion 23 extends in the width direction of the synthetic resin plate 40, and preferably has a width of 1 mm.
The groove portions 27 are arranged orthogonal to the transport direction 50 of the synthetic resin plate 40 over the entire width direction of the synthetic resin plate 40, and are arranged on the synthetic resin plate facing surfaces 24 and 25 of the upper portion 22 and the lower portion 23. It is formed alternately along the transport direction 50.
In the present embodiment, the upper portion 22 is provided with two ventilation passages 28a and 28b, and the lower portion 23 is arranged so as to be arranged in the middle portion of the two ventilation passages 28a and 28b. A book vent 28c is provided. The full-year road portions 28a and 28b are opened in 27a and 27b, respectively, and the 28c is opened in the groove portion 27d of the lower portion 22.

Therefore, the groove portions 27a and 27b at which the ventilation passages 28a and 28b open and the 27d at which the full-year road portion 28c opens are positioned inconsistent with each other along the transport direction of the transport path portion 26.
Since the lower ventilation passage 28c is provided so as to be arranged in the middle portion of the upper ventilation passages 28a and 28b, the negative pressure supplied at any portion of the transport passage portion 26 in the transport direction is up and down. Only one of them is provided, and the suction resistance acting in the vertical direction when a negative pressure is supplied does not interfere with the transport operation.

As shown in FIG. 1, the textured synthetic resin plate manufacturing apparatus 10 as described above manufactures the textured synthetic resin plate 40 by the following steps.

The extrusion machine 12 heats and melts the resin charged in the hopper 11 and extrudes the synthetic resin plate 40 into a plate shape (extrusion step: A).

The textured roll unit 13 conveys the synthetic resin plate 40 formed in the extrusion process and performs the textured processing on the synthetic resin plate 40 (texturing step: B). For example, this graining process is performed by a single graining roll 14 and a single receiving roll 15.

The air ejection portion 16 blows air onto the synthetic resin plate 40 that has been textured in the grain processing step (air blowing step: C).
Therefore, since air is forcibly supplied to the textured synthetic resin plate 40 in the air blowing step, the synthetic resin plate 40 is forcibly cooled and the textured pattern is solidified.

Next, the synthetic resin plate 40 that has been textured and cooled by air is further cooled and fixed in the sizing unit 20 and subjected to a sizing process (sizing step: D).
That is, in the sizing unit 20, negative pressure is supplied to the conveyed synthetic resin plate 40 by the full-year road portions 28a, 28b, 28c, and as a result, the synthetic resin plate 40 passes through the groove portions 27a, 27b, 27d. 22 is sucked into the synthetic resin plate facing surfaces 24 and 25 of the upper part and the lower part 23, respectively.

Therefore, the synthetic resin plate 40 is pressed against the synthetic resin plate facing surface portions 24 and 25 forming the transport path portion 26 of the synthetic resin plate 40, and is pressed by the synthetic resin plate facing surface portions 24 and 25 of the upper portion 22 and the lower portion 23. It is cooled and solidified.
In this case, as described above, the synthetic resin plate facing surface portions 24 and 25 forming the transport path portion 26 are formed corresponding to the width dimension and the thickness dimension of the manufactured product.
Therefore, since the synthetic resin plate 40 is cooled below the melting point of the main body by pressure contacting the synthetic resin plate facing surfaces 24 and 25 in the sizing device main body 21, the width dimension and the thickness dimension are opposed to the synthetic resin plate. It is fixed and solidified to be the same as the thickness dimension and width dimension of the product regulated by the surface portions 24 and 25.
Therefore, the conventional end treatment step in the width direction of the synthetic resin plate by the so-called "ear-cutting roll" after the natural cooling of the transport becomes unnecessary, and the manufacturing process can be simplified.

After the sizing step, the synthetic resin plate 40 is further cooled in the cooling tank 17 to become a more stable product (cooling step E).

As described above, in the textured synthetic resin plate manufacturing apparatus 10 according to the present embodiment, the sizing unit 20 is the extrusion step A in which the synthetic resin is formed into a plate shape and extruded, and the extruded plate-shaped synthetic resin is extruded. The grain processing is performed through a grain processing step B for imparting a grain pattern, a cooling step C for cooling the grained synthetic resin, a sizing step D for sizing to a desired size while cooling in the cooling step, and a cooling step E. The applied synthetic resin plate 40 is manufactured.

In particular, in the sizing portion 20 incorporated in the textured synthetic resin plate manufacturing apparatus 10, a plurality of groove portions 27 having a width of 1 mm are formed on the surfaces of the upper portion 22 and the lower portion 23 within the interval 23 through which the synthetic resin plate 40 passes. ing.
Then, at the time of sizing the synthetic resin plate 40, the negative pressure supply source 30 sucks the outside air from the outside of the sizing unit 20 to perform "vacuum drawing" to discharge the air in the vertical direction of the synthetic resin plate 40. At the time of this "evacuation", the extruded flat synthetic resin plate 40 is sucked into the inner wall of the interval 23, so that the thickness dimension is fixed and the width dimension is also defined. As a result, the manufacturing process can be significantly shortened as compared with the manufacturing device, and as a result, the manufacturing device can be miniaturized, so that the installation efficiency of the factory can be improved and the installation cost can be reduced.

Although the present embodiment has been described above, the present invention is not limited to the present embodiment, and various modifications can be made without departing from the gist of the present embodiment.

For example, the number of grooves 27 is not limited to two or three, and may be four or more or one as long as it is physically possible. Further, the width of the groove portion 27 is not limited to 1 mm, and may be less than 1 mm, for example 0.5 mm, or a width exceeding 1 mm, for example, 2 mm.

The present invention relates to a method for producing a textured synthetic resin plate for producing a textured synthetic resin plate for producing a synthetic resin plate and a textured synthetic resin plate manufacturing apparatus, and has a wide range of industrial possibilities. Have.

10 Textured synthetic resin plate manufacturing equipment 11 Hopper 12 Extruder 13 Textured roll part 14 Textured roll 15 Receiving roll 16 Air ejection part 17 Cooling tank 18 Picking machine 20 Sizing part 21 Sizing device main part 22 Upper part 23 Lower part 24, 25 Synthetic resin plate facing surface 26 Transport path 27 Groove 28 Ventilation 30 Negative pressure supply source 40 Synthetic resin plate 41 Top surface 42 Bottom surface 50 Transport direction A Extrusion process B Texture processing process C Air spraying process D Sizing process E Cooling process S Texture

The present invention relates to a method for producing a textured synthetic resin plate for producing a textured synthetic resin plate and an apparatus for producing a textured synthetic resin plate.

Conventionally, for example, a plate with a grain pattern such as a methacrylic resin has been widely used. When such a resin plate with a grain pattern is used for lighting, it prevents the glare of the light source, enables efficient lighting, and has a large decorative effect. Alternatively, it is used as a lighting cover material. The satin-like fine uneven pattern formed on the surface of the board is called a grain pattern.

Conventionally, in such a synthetic resin plate with a grain pattern, for example, an extruder and a take-up machine are arranged on a production line, the synthetic resin is heat-melted in the extruder, and the melted synthetic resin is formed into a plate shape. Along with extruding, the synthetic resin plate that has been extruded is picked up by the take-up machine, and the synthetic resin plate that is conveyed is passed through the embossing roll arranged between the extruder and the drawer plate to perform embossing on the plate surface. It is made by applying (Patent Document 1).

Japanese Unexamined Patent Publication No. 55-14262

In such a conventional method for manufacturing a textured synthetic resin plate, the synthetic resin plate is textured by being passed through a textured roll to be textured on the surface, and is pressed to be pressed. It is stretched along the length direction.

Then, in order to cool the heated synthetic resin plate, the heated synthetic resin plate is naturally cooled by being conveyed over the predetermined distance, and as a result, the synthetic resin plate is cooled and solidified. Then, in general, the widthwise end portion of the synthetic resin plate is cut off by an ear-cutting roll arranged on the upstream side of the take-up machine, and the width dimension of the synthetic resin plate is adjusted. After that, it is cut into a predetermined length by a cutting machine and commercialized.

However, in the method for producing a textured synthetic resin plate disclosed in Patent Document 1, the textured roll is composed of three rolls sequentially arranged along the transport direction. There is a problem that the equipment cost increases because the textured roll unit made of book rolls must be arranged.

Further, in order to naturally cool the textured synthetic resin plate, it is necessary to form a transport path for the synthetic resin plate over a predetermined length before reaching the cutting machine, and as a result, it is necessary to form a transport path for the synthetic resin plate. There was a problem that the manufacturing process and the entire manufacturing equipment became large, and the installation efficiency of the equipment in the factory was not good.

Further, in the prior art, the thickness at both ends of the synthetic resin plate is increased because the thickness is adjusted by utilizing the melt viscosity of the resin. Therefore, in order to match the size of the product to be manufactured, the upstream side of the take-up machine. An ear-cutting roll was placed in the roll, and the end portion of the conveyed synthetic resin roll in the width direction was cut off.

Therefore, in such a conventional technique, it is necessary to provide an end treatment step by an ear-cutting roll, and there is also a problem that the manufacturing work of the textured synthetic resin plate is complicated.

Therefore, the subject of the present invention is a method for producing a textured synthetic resin plate and an apparatus for producing a textured synthetic resin plate, which can reduce the equipment cost, improve the installation efficiency of the equipment, and improve the manufacturing efficiency. To provide.

In order to solve the above problems, the invention according to claim 1 is an extrusion step of extruding a synthetic resin plate and a texture processing in which the synthetic resin plate formed in the extrusion step is conveyed and the synthetic resin plate is textured. A method for manufacturing a textured synthetic resin plate including a step, which comprises an air blowing step of blowing air onto the textured synthetic resin plate in the textured processing step, and an air blowing step of supplying negative pressure to the above. synthesized the resin plate was cooled and solidified by pressing the synthetic resin plate opposing surface forming a transport path portion of the synthetic resin plate possess a sizing step of defining the size dimensions of the synthetic resin plate, the synthetic resin plate facing surface is formed corresponding to the width and thickness dimensions of the product to be manufactured, embossing the negative pressure, characterized in Rukoto is supplied to the upper surface portion and lower surface portion of the synthetic resin plate This is a method for manufacturing a processed synthetic resin plate.

Therefore, in the invention according to claim 1, it is extruded in the extrusion step, grained in the graining step, and then air is blown and cooled in the air blowing step, and the plate surface is textured by the graining. The formed grain pattern solidifies.

After that, in the sizing step, the synthetic resin plate is cooled and solidified by pressure-contacting the synthetic resin plate with the facing surface portion of the synthetic resin plate forming the transport path portion of the synthetic resin plate by supplying negative pressure. The size and size of the synthetic resin plate are defined.

Here, in the sizing step, the synthetic resin plate is sucked by the negative pressure supplied from the upper surface portion and the lower surface portion of the synthetic resin plate and pressed against the facing surface portion of the synthetic resin plate, and as a result, the synthetic resin plate is produced. It is formed in the width dimension and the thickness dimension of.

The invention according to claim 2 is the invention according to claim 1, wherein the embossing step is executed by a single embossing roll and a single receiving roll. This is a method for manufacturing a synthetic resin plate.

According to a third aspect of the present invention, in the first aspect, a method for producing embossed synthetic resin plate and having a cooling step of further cooling the synthetic resin plate after the sizing step.

The invention according to claim 4 is arranged between an extrusion machine that extrudes a synthetic resin plate, a take-out machine that pulls out and conveys the synthetic resin plate extruded by the extruder, and the take-out machine. A textured synthetic resin plate manufacturing apparatus provided with a textured synthetic resin plate having a textured roll portion for performing texture processing on the synthetic resin plate extruded by the extrusion machine, which is provided on the downstream side in the transport direction of the textured roll portion. , An air ejection part that blows air onto the textured synthetic resin plate and a negative pressure is applied to the textured synthetic resin plate that is arranged on the downstream side in the transport direction of the air ejection portion. supplying to said synthetic resin plate is perforated and a sizing unit for cooling and solidifying by pressing the synthetic resin plate opposing surface forming a transport path portion of the synthetic resin plate, the sizing unit, the sizing device body The sizing device has a portion and a transport path portion formed in the sizing device main body portion, and the synthetic resin plate facing surface portion is formed corresponding to the width dimension and the thickness dimension of the manufactured product. the main body, one end is the other end embossed synthetic resin plate manufacturing apparatus is characterized that you have ventilation channel is provided which is connected to a negative pressure source with open to the transport path portion ..

The invention according to claim 4 is configured as a textured synthetic resin plate manufacturing apparatus, in which a plate extruded by an extrusion machine is textured by a textured roll, and then air is blown by an air ejection portion. The textured pattern formed on the surface of the synthetic resin plate is solidified by the textured processing.

After that, in the sizing portion of the synthetic resin plate, a negative pressure is supplied to the textured synthetic resin plate, and as a result, the synthetic resin plate forms a transport path portion of the synthetic resin plate. It is cooled and solidified by pressure contacting the plate facing surface portion, and the width dimension and the thickness dimension of the synthetic resin plate are defined.

Here, since the synthetic resin plate facing surface portion forming the transport path portion is formed corresponding to the width dimension and the thickness dimension of the product to be manufactured, the synthetic resin plate is manufactured in the sizing portion. Defined in product dimensions.

Further, the negative pressure is supplied to the synthetic resin plate through the air passage.

The invention according to claim 5 is characterized in that, in the invention according to claim 4 , the textured roll portion is composed of a single textured roll and a single receiving roll. The textured synthetic resin plate manufacturing apparatus according to claim 5.

The invention according to claim 6 is the invention according to claim 4 , wherein the sizing device main body is composed of an upper portion covering the upper surface portion of the synthetic resin plate and a lower portion covering the lower surface portion of the synthetic resin plate. The ventilation passage is a textured synthetic resin plate manufacturing apparatus provided at the upper portion and the lower portion.

Therefore, in the invention according to claim 6 , the upper surface portion and the lower surface portion of the synthetic resin plate are suction-pressed with respect to the synthetic resin facing surface portion by the negative pressure supplied through the air passage.

The invention according to claim 7 is the textured synthetic resin plate manufacturing apparatus according to claim 4 , wherein the one end portion of the ventilation passage is provided with a groove portion that opens into the transport passage portion. Is.

Therefore, in the invention according to claim 7 , the negative pressure is supplied to the synthetic resin plate through the groove.

In the invention according to claim 8, in the invention according to claim 6 or 7 , the groove portion is arranged at right angles to the transport direction of the synthetic resin plate over the entire width direction of the synthetic resin plate. while being the year path, the in the upper and the lower, the synthetic resin plate embossing synthetic resin plate manufacturing apparatus according to claim 7, wherein the conveying are formed alternately along the direction of Is.

Therefore, in the invention according to claim 8, since the synthetic resin plate is arranged so as to be orthogonal to the transport direction of the synthetic resin plate over the entire width direction of the synthetic resin plate, the entire width direction of the synthetic resin plate is provided. Negative pressure is supplied over the above, and the entire width direction of the synthetic resin plate is suction-pressed with respect to the facing surface portion of the synthetic resin plate.

The invention according to claim 9 is an apparatus for manufacturing a textured synthetic resin plate, wherein the sizing unit is arranged in a cooling tank.

Therefore, in the invention according to claim 9, the synthetic resin plate cooled and solidified in the sizing portion is further naturally cooled in the cooling tank.

In the invention according to claim 1, the invention is extruded in an extrusion step, grained in a graining step, and then air is blown and cooled in an air blowing step to form a plate surface by graining. In the sizing process, the textured pattern is solidified, and the synthetic resin plate is pressed against the facing surface of the synthetic resin plate that forms the transport path portion of the synthetic resin plate by supplying negative pressure. As a result, the synthetic resin plate is cooled and solidified to define the size and dimension of the synthetic resin plate.

Therefore, as in the prior art, in order to naturally cool the textured synthetic resin plate, it is necessary to form a transport path for the synthetic resin plate over a predetermined length before reaching the cutting machine. As a result, the manufacturing process and the entire manufacturing apparatus can be miniaturized as compared with the conventional technique, the equipment cost can be reduced, and the installation efficiency of the equipment can be improved.

Further, in the sizing step, the synthetic resin plate facing surface portion is formed corresponding to the width dimension and the thickness dimension of the product to be manufactured, so that the size of the product to be manufactured can be adjusted as in the prior art. In order to make it compatible, it is possible to easily and quickly manufacture a textured synthetic resin plate by arranging an ear-cutting roll on the upstream side of the take-up machine and eliminating the step of cutting off the widthwise end of the conveyed synthetic resin roll. It will be possible.

In the invention according to claim 2, since the embossing step is executed by a single embossing roll and a single receiving roll, three machines are used for embossing as in the prior art. Since the roll eliminates the need for a roll unit, in addition to the effect according to claim 1, the number of parts can be reduced and the equipment cost can be reduced. As a result, the textured synthetic resin plate as a product can be reduced. It is possible to reduce the manufacturing cost of.

In the invention according to claim 3, since a cooling step for further cooling the synthetic resin plate is provided after the sizing step, the synthetic resin plate that has been cooled and solidified in the sizing step and has been subjected to the embossed processing is further naturally cooled. By doing so, it becomes possible to commercialize the product more stably.

In the textured synthetic resin plate manufacturing apparatus according to the invention of claim 4, the synthetic resin plate that has been textured by the textured roll is cooled by blowing air by the air ejection portion and is textured. The textured pattern formed on the surface of the plate is solidified, and the synthetic resin plate is further supplied with a negative pressure to the textured synthetic resin plate at the sizing portion, and as a result, the synthetic resin plate is described as described above. The width dimension and the thickness dimension of the synthetic resin plate are defined by being cooled and solidified by pressure contacting the facing surface portion of the synthetic resin plate forming the transport path portion of the synthetic resin plate.

As a result, as in the prior art, in order to naturally cool the textured synthetic resin plate, it is necessary to form a transport path for the synthetic resin plate over a predetermined length before reaching the cutting machine. As a result, it is possible to reduce the size of the entire manufacturing apparatus as compared with the conventional technology, and it is possible to reduce the equipment cost and improve the installation efficiency of the equipment.

Further, the sizing portion has a sizing device main body portion and the transport path portion formed in the sizing device main body portion, and the synthetic resin plate facing surface portion has a width dimension and a thickness dimension of the manufactured product. As in the prior art, the ear-cutting roll is placed on the upstream side of the take-up machine in order to match the size of the product to be manufactured, and the synthetic resin roll that has been conveyed is The step of cutting off the end portion in the width direction becomes unnecessary, and it becomes possible to easily and quickly manufacture a textured synthetic resin plate.

In the invention according to claim 5 , since the textured roll portion is composed of a single textured roll and a single receiving roll, it is used for textured processing as in the prior art. In addition to the effect of claim 4 , the number of parts can be reduced and the equipment cost can be reduced because the roll unit is not required due to the roll of three machines. As a result, the grain as a product is embossed. It is possible to reduce the manufacturing cost of the processed synthetic resin plate.

In the invention according to claim 6 , since the ventilation passage is provided in the upper portion and the lower portion constituting the main body of the sizing device, the entire surface includes the upper surface portion and the lower surface portion of the synthetic resin plate after the embossing. A negative pressure is supplied to the surface, and the upper surface portion and the lower surface portion are in pressure contact with the synthetic resin plate facing surface portion. As a result, the synthetic resin plate is cooled and solidified, and the cooling and solidifying treatment is performed more reliably and quickly.

In the invention according to claim 7 and 8 , the groove portion to which the negative pressure is supplied is arranged over the entire width direction of the synthetic resin plate at right angles to the transport direction of the synthetic resin plate. In addition, since the upper part and the lower part facing the synthetic resin plate are formed orthogonally along the transport direction, the negative pressure is evenly supplied over the entire width direction of the synthetic resin plate. In the synthetic resin plate, the entire area of the synthetic resin plate when being conveyed in the sizing device is pressed against the facing surface portion of the synthetic resin plate. As a result, the synthetic resin plate is cooled and solidified more reliably and quickly.

Further, since the full-year path is formed alternately along the transport direction in the upper portion and the lower portion, the resistance force due to the suction force generated in the synthetic resin plate due to the negative pressure supply is reduced, and the smooth transport is performed. It becomes possible.

In the invention according to claim 9 , since the sizing section is arranged in the cooling tank, the synthetic resin plate cooled and solidified in the sizing section is further naturally cooled in the cooling tank to make the product more stable. It becomes possible to change.

It is a figure which shows the embossed synthetic resin plate manufacturing apparatus and the manufacturing process of the embossed synthetic resin plate which concerns on embodiment of this invention. It is a figure which shows the upper part and the lower part of the sizing device main body part which constitutes the sizing part which concerns on embodiment of this invention. It is a figure which shows the upper part of the sizing apparatus main body which constitutes the sizing part which concerns on embodiment of this invention. It is a figure which shows the lower part of the sizing apparatus main body which constitutes the sizing part which concerns on embodiment of this invention.

Hereinafter, preferred embodiments for carrying out the present invention will be described in detail exemplary with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the present embodiment are not intended to limit the scope of the present invention to those, unless otherwise specified. Absent.

FIG. 1 is a diagram showing a textured synthetic resin plate manufacturing apparatus according to an embodiment of the present invention.

In FIG. 1, the textured synthetic resin plate manufacturing apparatus 10 includes a hopper 11, an extrusion machine 12, a textured roll portion 13 including a textured roll 14 and a receiving roll 15, an air ejection portion 16, a sizing portion 20, and a cooling tank 17. The pick-up machine 18 and the negative pressure supply source 30 are provided.

The hopper 11 stores the resin pellets as the resin material and supplies the resin pellets to the extruder 12 by connecting to the extruder 12 via a connecting pipe.

Examples of the resin material include biopolycarbonate resin. The resin materials used in the present embodiment include methacrylic resin, acrylic resin, aramid resin, polyolefin resin, polyamide resin, polyester resin, polycarbonate resin, polyarylate resin, polyacetal resin, polyphenylene sulfide resin, fluororesin, and polyacetal. It may be a resin, a polyglycolic acid resin, a polyimide resin, a polyamideimide resin, a polylactic acid resin, or the like.

The extrusion machine 12 heats and melts the resin charged in the hopper 11, forms a plate, and extrudes the resin.

In the present embodiment, the textured roll portion 13 is arranged between the extrusion machine 12 and the take-up machine 18 in the immediate vicinity downstream of the extrusion machine 12, and is textured on the synthetic resin plate 40 extruded by the extrusion machine 12. Apply processing.

In the present embodiment, the textured roll portion 13 is composed of a single textured roll 14 and a single receiving roll 15. The embossed roll 14 and the receiving roll 15 hold the plate-shaped resin extruded from the extruder 12 while rotating, and impart a pattern formed on the surface of the embossed roll 14 to the surface of the plate-shaped resin. Then, the textured synthetic resin plate 40 is manufactured.

The grain in the present embodiment refers to a satin-like fine uneven pattern attached to the surface of the manufactured synthetic resin plate 40. Examples of the pattern include irregularities and wrinkles, and the pattern may be a regular pattern or an irregular pattern. For example, regular irregularities or wrinkles are preferable, and leather-like irregularities or wrinkles are particularly preferable because they give a high-class feeling.

The depth of one pattern is 1 to 1000 micrometers (μm), preferably 5 to 500 micrometers. A more preferred pattern depth is 10 to 300 micrometers. When the depth of one pattern is smaller than 1 micrometer, the recognition as a pattern is weakened and the surface design is lowered. On the contrary, when the depth of one pattern is larger than 1000 micrometers, it is not recognized as a pattern, and the surface design tends to be low.

By forming such a grain on the surface of the synthetic resin plate 40, the synthetic resin plate 40 can be given a surface design and a sense of quality. The textured synthetic resin plate 40 is suitable for lighting equipment-related products, parts or housings of electronic devices such as televisions, VCRs, personal computers, cameras, digital cameras, instrument panels, automobile interior parts such as door trims, and the like. used.

The air ejection portion 16 is provided near the downstream side in the transport direction 50 when viewed from the textured roll portion 13, and air is blown onto the textured synthetic resin plate 40 to cool it. The air ejection portion 16 is provided in the longitudinal direction at the tip of a portion having a V-shaped cross section, and has an outlet. As a result, the grain pattern can be fixed to the synthetic resin plate 40 immediately after the grain processing without being rubbed in the sizing portion 20 and the grain pattern disappearing.

The sizing unit 20 is arranged on the downstream side in the transport direction 50 when viewed from the air ejection unit 16. The sizing unit 20 is installed in the cooling tank 17, and further cools and solidifies the synthetic resin plate 40 and performs sizing.

The take-up machine 18 pulls out and conveys the synthetic resin plate 40 extruded by the extrusion machine 12. That is, the cooled and sized synthetic resin plate 40 is picked up by the pick-up machine 18. The details of the sizing unit 20 will be described in detail with reference to FIGS. 2 to 4.

FIG. 2 is a diagram showing an upper portion 22 and a lower portion 23 of a sizing device main body portion constituting the sizing unit according to the embodiment of the present invention, and FIG. 3 is a diagram showing the upper portion 22 and the lower portion 23 constituting the sizing unit according to the embodiment of the present invention. It is a figure which shows the upper part 22 of the sizing device main body part, and FIG. 4 is a figure which shows the lower part 23 of the sizing device main body part which constitutes the sizing part which concerns on embodiment of this invention.

As shown in FIGS. 1 and 2, the sizing unit 20 has a sizing device main body 21 and a transport path 26 formed in the sizing device main body 21.

In the present embodiment, the sizing device main body 21 is formed in a substantially rectangular parallelepiped shape as a whole, and as shown in FIG. 2, a rectangular parallelepiped upper portion covering the upper surface portion 41 (see FIG. 1) of the synthetic resin plate 40. It is composed of 22 and a similarly rectangular parallelepiped lower portion 23 that covers the lower surface portion 42 (see FIG. 1) of the synthetic resin plate 40.

The synthetic resin plate 40 to which the textured pattern is imparted is movably arranged in the transport path portion 26 formed between the upper portion 22 and the lower portion 23. Further, in the present embodiment, the sizing device main body 21 is arranged along the width direction of the synthetic resin plate 40 in the transport direction, and the two sizing device main bodies 21 are arranged along the transport direction. It is connected in a row.

Note that FIG. 2A is a drawing obtained by extracting the upper portion 22 and the lower portion 23 in FIG. 1, and FIG. 2B is a view of the sizing device main body 21 shown in FIG. 2 from the right side of the paper. It is a front view, (c) is an AA sectional view in (a), and (d) is a BB sectional view in (a). Further, (e) is a view of the back surface portion of the upper portion 22 viewed from the lower side, and (f) is a view of the front surface portion of the lower portion 23 viewed from the upper side.

Further, the sizing device main body 21 is provided with a ventilation path 28 having one end opened in the transport path 26 and the other end connected to the negative pressure supply source 30. The ventilation passage 28 is a passage that conducts to the outside from the groove portion 27, which will be described later, and is provided in the upper portion 22 and the lower portion 23.

A negative pressure supply source 30 (not shown) connected to the air passage 28 via a hose or the like performs "vacuum drawing" in the vertical direction of the synthetic resin plate 40 held in the transport path portion 26, and the transport path portion 26 The air present in the air is discharged to the outside.

That is, the sizing unit 20 supplies a negative pressure to the textured synthetic resin plate 40 to form the synthetic resin plate 40 in the transport path portion 26 of the synthetic resin plate 40. , 25 is pressure-welded to further cool and solidify.

In this case, the synthetic resin plate facing surface portions 24 and 25 are formed corresponding to the width dimension and the thickness dimension of the manufactured product.

The synthetic resin plate facing surface portion 24 is a surface formed on the upper 22 side, and the synthetic resin plate facing surface portion 25 is a surface formed on the lower 23 side.

A plurality of groove portions 27 that open into the transport passage portion 26 are provided at one end of the ventilation passage 28.

The upper portion 22 is provided with two groove portions 27a and 27b on the lower surface facing the lower portion 23 via the transport path portion 26.

The lower portion 23 is provided with three groove portions 27c, 27d, and 27e on the upper surface facing the upper portion 22 via the transport path portion 26.

The groove portion 27 is formed along the length direction of the upper portion 22 and the lower portion 23, and as a result, is arranged so as to be orthogonal to the transport path 26 as a whole.

As shown in FIGS. 2A and 2E, the two groove portions 27a and 27b formed in the upper portion 22 are two of the three groove portions 27b, 27c and 27d formed in the lower portion 23 at both ends. It is arranged at the same position in the transport direction as the groove portions 27c and 27e of the above. In the figure, the diagonal line S is a “texture” pattern attached to the synthetic resin plate 40 by grain processing.

Since the upper and lower groove portions 27a, 27b, 27c, 27d, and 27e are provided above and below the transport path portion 26, each of the upper and lower groove portions 27a, 27b, 27c, 27d, and 27e is provided on both sides of the synthetic resin plate 40 to which the transport path portion 26 is transported in the sizing device main body 21. By suction and cooling, pressure contact can be made with the synthetic resin plate facing surfaces 24 and 25.

In the present embodiment, of the three groove portions 27 formed in the lower portion 23, one groove portion 27d in the center does not have a groove portion facing the upper portion 22, and the lower surface portion of the synthetic resin plate 40. Only 42 is sucked and cooled.

The reason why the lower portion 23 has more grooves than the upper portion 22 is as follows.

When negative pressure suction is performed from the upper 22 side, even if the groove 27 is present on the lower 23 side, the suction from the upper 22 side and the resulting cooling become stronger, and the upper surface 41 and the lower surface 42 of the synthetic resin plate 40 are cooled. There is a possibility that the progress of the plastic will be different and warpage will occur due to shrinkage.

Therefore, in order to balance the circumstances on the upper surface portion 41 side and strengthen the cooling of the lower surface portion 42, the number of groove portions 27 formed in the lower portion 23 is configured to be larger than that of the upper surface portion 22. .. Thereby, the warp of the synthetic resin plate 40 can be effectively prevented.

Each of the groove portions 27 provided in the upper portion 22 and the lower portion 23 extends in the width direction of the synthetic resin plate 40, and preferably has a width of 1 mm.

The groove portions 27 are arranged orthogonal to the transport direction 50 of the synthetic resin plate 40 over the entire width direction of the synthetic resin plate 40, and are arranged on the synthetic resin plate facing surfaces 24 and 25 of the upper portion 22 and the lower portion 23. It is formed alternately along the transport direction 50.

In the present embodiment, the upper portion 22 is provided with two ventilation passages 28a and 28b, and the lower portion 23 is arranged so as to be arranged in the middle portion of the two ventilation passages 28a and 28b. A book vent 28c is provided. The full-year road portions 28a and 28b are opened in 27a and 27b, respectively, and the 28c is opened in the groove portion 27d of the lower portion 22.

Therefore, the groove portions 27a and 27b at which the ventilation passages 28a and 28b open and the 27d at which the full-year road portion 28c opens are positioned inconsistent with each other along the transport direction of the transport path portion 26.
Since the lower ventilation passage 28c is provided so as to be arranged in the middle portion of the upper ventilation passages 28a and 28b, the negative pressure supplied at any portion of the transport passage portion 26 in the transport direction is up and down. Only one of them is provided, and the suction resistance acting in the vertical direction when a negative pressure is supplied does not interfere with the transport operation.

As shown in FIG. 1, the textured synthetic resin plate manufacturing apparatus 10 as described above manufactures the textured synthetic resin plate 40 by the following steps.

The extrusion machine 12 heats and melts the resin charged in the hopper 11 and extrudes the synthetic resin plate 40 into a plate shape (extrusion step: A).

The textured roll unit 13 conveys the synthetic resin plate 40 formed in the extrusion process and performs the textured processing on the synthetic resin plate 40 (texturing step: B). For example, this graining process is performed by a single graining roll 14 and a single receiving roll 15.

The air ejection portion 16 blows air onto the synthetic resin plate 40 that has been textured in the grain processing step (air blowing step: C).

Therefore, since air is forcibly supplied to the textured synthetic resin plate 40 in the air blowing step, the synthetic resin plate 40 is forcibly cooled and the textured pattern is solidified.

Next, the synthetic resin plate 40 that has been textured and cooled by air is further cooled and fixed in the sizing unit 20 and subjected to a sizing process (sizing step: D).

That is, in the sizing unit 20, negative pressure is supplied to the conveyed synthetic resin plate 40 by the full-year road portions 28a, 28b, 28c, and as a result, the synthetic resin plate 40 passes through the groove portions 27a, 27b, 27d. 22 is sucked into the synthetic resin plate facing surfaces 24 and 25 of the upper part and the lower part 23, respectively.

Therefore, the synthetic resin plate 40 is pressed against the synthetic resin plate facing surface portions 24 and 25 forming the transport path portion 26 of the synthetic resin plate 40, and is pressed by the synthetic resin plate facing surface portions 24 and 25 of the upper portion 22 and the lower portion 23. It is cooled and solidified.

In this case, as described above, the synthetic resin plate facing surface portions 24 and 25 forming the transport path portion 26 are formed corresponding to the width dimension and the thickness dimension of the manufactured product.

Therefore, since the synthetic resin plate 40 is cooled below the melting point of the main body by pressure contacting the synthetic resin plate facing surfaces 24 and 25 in the sizing device main body 21, the width dimension and the thickness dimension are opposed to the synthetic resin plate. It is fixed and solidified to be the same as the thickness dimension and width dimension of the product regulated by the surface portions 24 and 25.

Therefore, the conventional end treatment step in the width direction of the synthetic resin plate by the so-called "ear-cutting roll" after the natural cooling of the transport becomes unnecessary, and the manufacturing process can be simplified.

After the sizing step, the synthetic resin plate 40 is further cooled in the cooling tank 17 to become a more stable product (cooling step E).

As described above, in the textured synthetic resin plate manufacturing apparatus 10 according to the present embodiment, the sizing unit 20 is the extrusion step A in which the synthetic resin is formed into a plate shape and extruded, and the extruded plate-shaped synthetic resin is extruded. The grain processing is performed through a grain processing step B for imparting a grain pattern, a cooling step C for cooling the grained synthetic resin, a sizing step D for sizing to a desired size while cooling in the cooling step, and a cooling step E. The applied synthetic resin plate 40 is manufactured.

In particular, in the sizing portion 20 incorporated in the textured synthetic resin plate manufacturing apparatus 10, a plurality of groove portions 27 having a width of 1 mm are formed on the surfaces of the upper portion 22 and the lower portion 23 within the interval 23 through which the synthetic resin plate 40 passes. ing.

Then, at the time of sizing the synthetic resin plate 40, the negative pressure supply source 30 sucks the outside air from the outside of the sizing unit 20 to perform "vacuum drawing" to discharge the air in the vertical direction of the synthetic resin plate 40. At the time of this "evacuation", the extruded flat synthetic resin plate 40 is sucked into the inner wall of the interval 23, so that the thickness dimension is fixed and the width dimension is also defined. As a result, the manufacturing process can be significantly shortened as compared with the manufacturing device, and as a result, the manufacturing device can be downsized, so that the installation efficiency of the factory can be improved and the installation cost can be reduced.

Although the present embodiment has been described above, the present invention is not limited to the present embodiment, and various modifications can be made without departing from the gist of the present embodiment.

For example, the number of grooves 27 is not limited to two or three, and may be four or more or one as long as it is physically possible. Further, the width of the groove portion 27 is not limited to 1 mm, and may be less than 1 mm, for example 0.5 mm, or a width exceeding 1 mm, for example, 2 mm.

The present invention relates to a method for producing a textured synthetic resin plate for producing a textured synthetic resin plate for producing a synthetic resin plate and a textured synthetic resin plate manufacturing apparatus, and has a wide range of industrial possibilities. Have.

10 Textured synthetic resin plate manufacturing equipment 11 Hopper 12 Extruder 13 Textured roll part 14 Textured roll 15 Receiving roll 16 Air ejection part 17 Cooling tank 18 Picking machine 20 Sizing part 21 Sizing device main part 22 Upper part 23 Lower part 24, 25 Synthetic resin plate facing surface 26 Transport path 27 Groove 28 Ventilation 30 Negative pressure supply source 40 Synthetic resin plate 41 Top surface 42 Bottom surface 50 Transport direction A Extrusion process B Texture processing process C Air spraying process D Sizing process E Cooling process S Texture

Claims (11)

A method for producing a textured synthetic resin plate, which comprises an extrusion step of extruding a synthetic resin plate and a texture processing step of transporting the synthetic resin plate formed in the extrusion step and performing texture processing on the synthetic resin plate. And
An air blowing step of blowing air onto a synthetic resin plate that has been textured in the graining process, and an air blowing process.
A negative pressure is supplied to bring the synthetic resin plate into pressure contact with the facing surface portion of the synthetic resin plate forming the transport path portion of the synthetic resin plate to cool and solidify the synthetic resin plate, thereby defining the size and dimension of the synthetic resin plate. A method for producing a textured synthetic resin plate, which comprises a sizing step. The method for producing a textured synthetic resin plate according to claim 1, wherein the textured step is executed by a single textured roll and a single receiving roll. The synthetic resin plate facing surface portion is formed corresponding to the width dimension and the thickness dimension of the manufactured product, and the negative pressure is supplied to the upper surface portion and the lower surface portion of the synthetic resin plate. The method for producing a textured synthetic resin plate according to claim 1. The method for producing a textured synthetic resin plate according to claim 2, further comprising a cooling step of further cooling the synthetic resin plate after the sizing step. An extrusion machine that extrudes a synthetic resin plate, a take-out machine that pulls out and conveys the synthetic resin plate that has been extruded by the extruder, and an extruder that is arranged between the extruder and the take-out machine and is extruded by the extruder. It is a textured synthetic resin plate manufacturing apparatus provided with a textured roll portion for performing textured processing on the synthetic resin plate.
An air ejection portion provided on the downstream side in the transport direction of the textured roll portion and blowing air onto the textured synthetic resin plate, and an air ejection portion.
A composite that is arranged on the downstream side in the transport direction of the air ejection portion and supplies a negative pressure to the textured synthetic resin plate to form the transport path portion of the synthetic resin plate. A textured synthetic resin plate manufacturing apparatus characterized by having a sizing portion that is cooled and solidified by being pressed against a resin plate facing surface portion. The textured synthetic resin plate manufacturing apparatus according to claim 5, wherein the textured roll portion is composed of a single textured roll and a single receiving roll. The sizing portion has a sizing device main body portion and the transport path portion formed in the sizing device main body portion, and the synthetic resin plate facing surface portion corresponds to the width dimension and the thickness dimension of the manufactured product. Formed,
The grain according to claim 5, wherein the sizing device main body is provided with a ventilation path having one end open to the transport path and the other end connected to a negative pressure supply source. Processed synthetic resin plate manufacturing equipment. The sizing device main body is composed of an upper portion that covers the upper surface portion of the synthetic resin plate and a lower portion that covers the lower surface portion of the synthetic resin plate, and the ventilation passages are provided in the upper portion and the lower portion. The textured synthetic resin plate manufacturing apparatus according to claim 5. The embossed synthetic resin plate manufacturing apparatus according to claim 7, wherein a groove portion that opens into the transport path portion is provided at one end of the ventilation path. The groove portion is arranged orthogonal to the transport direction of the synthetic resin plate over the entire width direction of the synthetic resin plate, and the ventilation passages are provided in the upper portion and the lower portion of the synthetic resin plate for transporting the synthetic resin plate. The apparatus for producing a textured synthetic resin plate according to claim 9, wherein the textured synthetic resin plates are formed alternately along the directions. The embossed synthetic resin plate manufacturing apparatus according to claim 5, wherein the sizing unit is arranged in a cooling tank.

Images