TWI764167B - Fibre product vacuum forming method and equipment - Google Patents

Abstract

A vacuum forming method and equipment for fiber products, which uses a film forming machine to extrude plant fiber raw materials after heating and rotating and stirring to form a film-shaped fiber film, and then a warm and plastic fiber film The material is transported to a vacuum forming machine for vacuum forming operation. The vacuum forming machine is provided with a conveying unit, a vacuum machine, a vacuum pumping module and several molds on a frame, and the molds are fixed on the conveying unit for Cyclic movement, when the fiber membrane covers the molds and moves along with the conveying unit, and the fiber membrane continues to be extruded, when the empty forming machine starts the function of vacuuming, it can be made in an automated manner. The fiber membrane material is vacuum adsorbed on the surface of the mold to form a fiber product, and after hardening and stripping, it is cut to become a finished product, which achieves the purpose of completing the production of the fiber product by a vacuum forming method.

Description

Fiber product vacuum forming method and equipment

This creation belongs to a manufacturing method and equipment for making environmental protection daily necessities with plant fibers as raw materials.

Press, with the development of human science and technology civilization, modern human life is full of more and more plastic products. Plastics with cheap manufacturing process, variable properties, light weight and convenience will undoubtedly make human life more and more convenient. However, plastics The products cannot be decomposed naturally, and they often flow into the ocean with random discards, drifting around the world with ocean currents, causing all kinds of marine creatures to eat plastic and die, or get entangled in plastic products, resulting in restricted movement In addition to harming health and natural ecology, marine debris will also affect the livelihood and economic losses of the government and local residents, among which The fishing industry, tourism industry, and marine transportation industry are the most affected. In addition, most plastics will produce toxins when heated, which will cause harm to the human body. The best solution is to stop using plastic products and use natural Therefore, there are currently bowls, plates, cups, straws, etc. made of paper products; however, in order to hold beverages or water, paper cups usually need to have waterproof and thermal insulation functions, and add a layer of thin wax or It is a waterproof film extracted from plastic, so the paper cup is not a simple paper, but a composite material. And other beverage paper cups (including coffee cups, milk cartons), lunch boxes, instant noodle cups and other paper products with waterproof and food and beverage functions are all the same, called "paper containers". Such composite material characteristics also make paper cups prone to different difficulties in recycling. In the UK, the recycling rate for paper cups is less than 1%. and add The Toronto city government even announced that paper cups cannot be recycled, calling on the public to throw paper cups into the trash. The recycling rate of paper containers in Taiwan is not high. Although general waste paper processing plants can process waste paper and paper containers together, the amount of pulp extracted from paper containers is less (the pulp yield is about 40%), and the procedures are complicated. The technology of the paper processing plant is still unable to completely disperse the impurities such as plastic film. Therefore, the remaining impurities will be re-discharged into garbage, which not only causes a considerable burden on the paper processing plant, but also causes secondary damage to the environment due to the energy consumption and pollution caused by the processing. Therefore, if the production of plant fiber environmentally friendly products that do not contain plastic components is designed, it will become the direction of the applicant's thinking and creation.

The main purpose of this creation is to provide a "vacuum forming method and equipment for fiber products", which enables environmentally friendly products such as bowls, plates or boxes to be produced from plant fibers, so that the finished product does not contain any plasticization. The raw materials can not only improve the quality of environmental protection, but also 100% of the fiber components can be reused when recycled, avoiding the waste of resources.

Another purpose of this creation is to enable the production of environmentally friendly products with plant fibers as raw materials to be produced by automated equipment, so as to improve the efficiency and quality of production.

In order to achieve the above-mentioned creative purpose, this creation "fiber product vacuum forming method and its equipment" mainly includes a film forming machine, a vacuum forming machine, a sterilizing machine, a cutting machine and other machines. The following steps: a. Using a film forming machine to form a fiber film, B. The fibrous membrane material is subjected to vacuum forming using a vacuum forming machine, C. Cool and harden the formed fiber film material, D. The hardened fiber product is removed from the mold, and is sterilized by ultraviolet rays through a sterilizer. E. Fiber products are cut into finished products using this cutting machine. Among them: the film forming machine is a body with a feeding port at one end and a material extruding head at the other end, and a stirring mechanism is set between the feeding port and the extrusion head, and the stirring mechanism is horizontally arranged. A stirring screw, the stirring mechanism can extrude the film-shaped fibrous film material from the discharge port of the extrusion head after heating and rotating stirring the raw material particles placed in the feeding port. The vacuum forming machine is provided with at least a conveying unit, a vacuum machine, An empty module and a number of molds, the conveying unit is set with a chain belt between the first and second transmission wheels, and the molds are fixed on the chain belt adjacent to each other, so that they can be carried by the conveying unit Circular conveying movement; secondly, the vacuuming module is arranged on the two sides of the appropriate position corresponding to the moving path of the waiting mold, and a guide rod is appropriately set above the outer end of the frame corresponding to the waiting mold to support the The fiber membrane material covers the molds; an air inlet is provided on the outer side of each mold, and a plurality of air holes are formed on the mold core, which can be used for the air injection pipe at one end of the vacuuming module to be embedded and joined with the air inlet. Start the vacuum machine to carry out the vacuuming operation, so that the fiber film material is vacuum adsorbed on the surface of the mold core to form the desired product shape, and after cooling and hardening, the desired fiber product is formed, and the fiber product is demolded and then passed through After the ultraviolet sterilization and cutting machine cuts, the finished product that can hold food or beverage is completed. Thereby, using the above-mentioned molding equipment and manufacturing method, automatic equipment can be used to produce plant fibers as raw materials into environmentally friendly products such as bowls, plates, and boxes.

(10): Film forming machine

(11): Feeding port

(12): Extrusion head

(121): discharge port

(13): stirring mechanism

(131): stirring screw

(132): Air adjustment port

(20): Vacuum forming machine

(21): Rack

(211): Orbit

(22): Conveying unit

(221): the first transmission wheel

(222): Second transmission wheel

(223): Chain belt

(224): Power Source

(225): Linkage belt

(23): Mould

(231): Air intake

(232): Mo Ren

(24): Vacuum Machine

(25): Vacuum module

(251): Insufflation tube

(26): Limit unit

(261): Telescopic frame

(262):Limiting plate

(263):Press wheel

(27): scroll wheel

(271): Positioning hole

(272): Rod body

(28): Guide rod

(29): blower

(30): Sterilizer

(40): Cutter

(50): Fiber membrane

(51): Fiber Products

Figure 1: It is a schematic diagram of the steps of the molding method of the present invention.

Figure 2: It is a plan view of the film forming machine of the present invention.

Figure 3: It is a plan view of the vacuum forming machine of the present invention.

Figure 4: It is an embodiment diagram of the vacuum forming machine of the present invention performing steps B, C, and D.

Figure 5: It is a three-dimensional appearance view of the vacuuming module of the present invention.

Figure 6: It is a top-view embodiment diagram of the vacuum forming machine of the present invention performing steps B, C, and D.

Please refer to Figures 1 to 6. The "vacuum forming method and equipment for fiber products" of the present invention comprises a film forming machine (10), a vacuum forming machine (20), a sterilizing machine (30) and a cutting machine. (40) and other machines, using such machines to perform the following steps:

經過加熱及旋轉攪拌後擠製為膜片狀的纖維膜材(50)，該原料粒可由植物纖維粉40~60%、澱粉20~30%、澱粉發酵的植物膠粉末10~20%、水溶性高分子膠5~10%，以及纖維素蛋白質3~5%等成分製成原料粒，緣於此原料成分及比例，已另案申請專利，不再贅述。 A. forming a fiber film material, and using the film material forming machine (10) to form the raw material pellets

After heating and rotary stirring, it is extruded into a sheet-like fiber film material (50). 5~10% of polymer glue and 3~5% of cellulose protein are used to make raw material pellets. Due to the composition and proportion of these raw materials, a patent has been applied for in a separate case and will not be repeated here.

The film material forming machine (10) is provided with a material inlet (11) at one end of the body, and an extrusion head (12) at the other end, and between the material inlet (11) and the extrusion head (12) A stirring mechanism (13) is provided, and a stirring screw (131) is arranged transversely in the stirring mechanism (13). The temperature in the space where it is located is controlled, and the temperature value is set between 140 and 190 ° C. At the same time, during the stirring process, if the moisture contained in the raw material is too high, it can be adjusted through the adjustment above the stirring mechanism (13). The air port (132) adjusts the humidity, and if necessary, can also use the assistance of a pumping device to discharge the humidity to the outside. After the raw material pellets are put into the stirring mechanism (13) from the feeding port (11), the viscous plant fiber raw material will pass through the stirring screw (131) with the rotation stirring and multi-stage heating. The inside of the extruding head (12) is extruded into a sheet shape, and then a film-shaped fiber membrane material (50) is extruded outward from the discharge port (121) at the outer end.

b. For vacuum forming, the vacuum forming machine (20) is used to perform a vacuum forming operation on the warm and plastic fiber film material (50). In the vacuum forming machine (20), a frame (21) is provided with a conveying unit (22), a plurality of molds (23), a vacuum machine (24), a vacuuming module (25), and two sets of limit units (26). ) and a scroll wheel (27), of which: The conveying unit (22) includes first and second transmission wheels (221, 222) and a chain belt (223) sleeved between the two transmission wheels (221, 222). The first transmission wheel (221) can be Driven by the power source (224) to rotate, and then drive the chain The belt (223) moves in the conveying stroke; in addition, a guide rod (28) is appropriately provided above the outer end of the frame (21) corresponding to the film forming machine (10), and the guide rod (28) is connected to the first A link belt (225) is arranged between the transmission wheels (221) to drive the guide rod (28) to rotate at the same time.

The molds (23) are fixed adjacent to the outer edge of the chain belt (223), and can move cyclically with the transmission of the chain belt (223). An air inlet is provided on the outer side of each mold (23). (231), the inner edge has a mold core (232) in the shape of the product to be formed, and a plurality of air holes (not shown in the figure) are formed on the mold core (232).

The vacuum machine (24) is installed at an appropriate position of the frame (21), and cooperates with the vacuuming module (25) to perform vacuuming operation on the mold (23), and the vacuuming module (25) is arranged in the vacuuming module (25). The frame (21) corresponds to the rails (211) on the two sides of the appropriate position of the moving path of the mold (23), and there is a gas injection pipe (251) which can make a stroke displacement in the direction of the mold (23); The air inlets (231) protruding on the outside of the two molds (23) can be arranged in a staggered configuration, that is, one is on the left and the other is on the right, so that the two vacuuming modules (25) can be fixed on the machine. The two sides of the frame (21) can be vacuumed simultaneously for the two molds.

The two limit units (26) are arranged at the appropriate positions of the frame (21) corresponding to the two sides of the mold (23), and each of the limit units (26) includes a telescopic frame (261), a limit plate (262) and several pressing rollers (263), one end of the telescopic frame (261) is fixed on the top of the frame (21), and the other end is assembled with the limiting plate (262). The pressing rollers (263) The spacers are pivoted on the limiting plate (262).

The scroll wheel (27) can be driven to rotate by a power, and is fastened to the upper part of the frame (21) corresponding to the rear end of the conveying unit (22). (271), a number of rod bodies (272) can be set on the second Between the opposite positioning holes (271), when the positioning holes (271) with different centers are used for assembling the rod bodies (272), the diameters enclosed by the rod bodies (272) will also be different.

When the above-mentioned equipment is used for vacuum forming, the warm and plastic fiber film material (50) is firstly hung on the guide rod (28), so that the fiber film material (50) is supported at a high position, The fibrous film material (50) is continuously extruded along with the film material forming machine (10), while the conveying unit (22) continues to extrude the fibrous film material (50) by moving forward and conveying it to cover the mold (23) located in front of the conveying unit (22). ) also synchronously drives the molds (23) to move cyclically, and at the same time, the telescopic frames (261) of the two limit units (26) will extend to drive the limit plates (262) to move down, so that the pressure rollers (263) press against On the two side edges of several molds (23), the fiber membranes (50) are positioned. At the same time, the gas injection pipe (251) at one end of the vacuuming module (25) located on the outside of the mold (23) will protrude toward the mold (23) and engage with the air inlet (231); When the mold (23) in which the gas injection pipe (251) is embedded and engaged is driven and displaced by the conveying unit (22), the vacuuming module (25) will also move synchronously along the track (211), and the The vacuum machine (24) is activated to perform a vacuuming operation on the mold (23), so that the fiber membrane (50) is vacuum adsorbed on the surface of the mold core (232) to form a desired product shape, and then the vacuuming is performed The gas injection pipe (251) of the module (25) is separated from the air inlet (231) and moves forward of the track (211). It should be noted that the moving speed of the chain belt (223) is greater than the speed at which the film material forming machine (10) extrudes the fiber film material (50). During the vacuum forming process of the material (50), the movement of the chain belt (223) will produce a tensile force on the fiber film material (50), and the fiber film material (50) will have a uniform thickness due to the stretching of the external force. Thick phenomenon, improve the stability of vacuum forming.

c. After cooling and hardening, when the fiber film (50) is vacuum-formed on the surface of the mold core (232), the conveying unit (22) will drive the mold (23) to move to the other end. During the cooling and hardening process, in order to speed up the hardening speed, an air blower (29) can be appropriately arranged above and below the frame (21) corresponding to the middle section of the conveying unit (22) to accelerate the cooling efficiency.

D. The finished product is demolded, and the hardened and formed fiber film material (50) is removed from the mold (23) to complete the molding of the fiber product (51). 51) After releasing the film from the mold, place it on the rod body (272) of the rolling wheel (27), because the molds move cyclically with the conveying unit (22), so with the rolling wheel (27) 27), the hardened fiber product (51) can be continuously and automatically released from the mold.

D2. For disinfection and sterilization, the fiber product (51) after the film mold is passed through a sterilization machine (30) to perform sterilization operation with ultraviolet rays. The sterilization machine (30) is a general machine and will not be described again.

E. For cutting, a cutting machine (40) is used to cut the fiber product into a finished product. The cutting machine (40) is a general machine and will not be repeated here.

Thereby, the vacuum forming steps performed by the above-mentioned machinery and equipment such as the film forming machine (10), the vacuum forming machine (20), the sterilizing machine (30) and the cutting machine (40) can not only produce 100% plant fibers Produce bowls, plates, boxes and other environmentally friendly products for raw materials. At the same time, it can be produced with automated equipment. In addition to improving the efficiency and quality of production, it can also reuse 100% of the recovered fiber components to avoid waste of resources.

(10): Film forming machine

(11): Feeding port

(12): Extrusion head

(121): discharge port

(13): stirring mechanism

(20): Vacuum forming machine

(211): Orbit

(223): Chain belt

(23): Mould

(231): Air intake

(25): Vacuum module

(261): Telescopic frame

(262):Limiting plate

(263):Press wheel

(27): scroll wheel

(271): Positioning hole

(272): Rod body

(29): blower

(30): Sterilizer

(40): Cutter

(50): Fiber membrane

(51): Fiber Products

Claims (10)

A vacuum forming method for fiber products, the process comprising: A. To form a fiber film material, the raw material particles made of plant fiber raw materials are put into the feeding port at one end of a film material forming machine, so that the raw material particles are heated and rotated and stirred inside the film material forming machine. A film-shaped fiber film material is extruded from the material port, and the fiber film material is in a warm and plastic use form; B. For vacuum forming, the fiber film material is transported to the direction of a vacuum forming machine. The vacuum forming machine is equipped with at least a vacuum machine, a vacuuming module and a number of molds on a frame. The vacuuming module can be installed on the frame pair. Should wait for the two sides of the mold, an air inlet is provided on the outer side of each mold, and a number of air holes are formed on the mold core of the mold, so that the fiber film material covers the molds. The air injection pipe is connected to the air inlet, and when the vacuuming operation is started, the fiber membrane is vacuum adsorbed on the surface of the mold core to form the corresponding product shape; C. After cooling and hardening, the fiber film material is cooled and hardened after a period of time; D. The finished product is demolded, and the hardened fiber product is removed from the mold; E. Cutting, using a cutting machine to cut fiber products into finished products. A vacuum forming method for fiber products according to claim 1, wherein the film forming machine is provided with a feeding port at one end of a body and an extruding head at the other end, and between the feeding port and the extruding head A stirring mechanism is set up, and a stirring screw is arranged horizontally in the stirring mechanism. The stirring screw has a multi-section structure. Each section can be controlled by a different temperature controller. After the raw material particles fed into the stirring mechanism are heated in multiple stages and rotated and stirred, the film-shaped fibrous film material is extruded from the discharge port of the extrusion head. According to claim 1, a vacuum forming method for fiber products, wherein a guide rod is appropriately provided above the outer end of the frame corresponding to the molds to support the fiber film material to cover the molds; and the The mold can be set on a conveying unit for cyclic movement, the conveying unit Including first and second transmission wheels and a chain belt sleeved between the two transmission wheels, wherein the first transmission wheel can be driven by the power source to rotate, and then drive the chain belt to move in the conveying stroke, and the molds It is attached to the outer edge of the chain belt and can move cyclically with the transmission of the chain belt; in addition, a link belt is arranged between the first transmission wheel and the guide rod to drive the guide rod to rotate at the same time. According to the method for vacuum forming of fiber products according to claim 3, wherein the frame is provided with two sets of limit units at a suitable position above the front end of the molds corresponding to the conveying unit, and the two limit units are arranged in the corresponding positions. The position of the two sides of the mold, each of the limit units includes a telescopic frame, a limit plate and a number of pressure rollers, one end of the telescopic frame is fixed on the top of the frame, and the other end is assembled with the limit plate, these The pressure rollers are pivoted on the limit plate at intervals. When the fiber film material covers the molds, the telescopic frames of the two limit units will extend to drive the limit plates to move down, so that the pressure rollers press against the molds. On the two side edges of several molds, the cyclic movement of the molds is driven by the conveying unit to position the fiber membrane. A method for vacuum forming a fiber product according to claim 1, wherein the step D. When the finished product is demoulded, it can be driven by a rolling wheel to assist the demoulding. The rolling wheel is set at a suitable position above the frame relative to the other end of the film forming machine, and several positioning holes are formed at equal angles on both sides for the purpose of A number of rods are set between the two opposite positioning holes. When the production operation is in progress, when the hardened fiber products are to be demolded, the fiber products that have been hardened and formed in the molds can be removed from the mold and placed together. After being mounted on the rod body of the rolling wheel, the other hardened fiber products can be driven out of the mold along with the rotation of the rolling wheel. A fiber product vacuum forming equipment, which comprises at least a film material forming machine, a vacuum forming machine and a cutting machine, wherein: the film material forming machine is provided with a feeding port at one end of the body and an extrusion head at the other end. , and a stirring mechanism is set between the feeding port and the extrusion head. A stirring screw is arranged transversely in the stirring mechanism. The stirring mechanism can heat and rotate the raw material particles placed in the feeding port. After stirring, the extrusion head The film-shaped fiber film material is extruded from the discharge port of the machine and conveyed to the vacuum forming machine; the vacuum forming machine is a frame with at least one vacuum machine, a vacuuming module and several molds. The modules are arranged on the two sides of the corresponding molds, and a guide rod is appropriately set above the outer end of the frame corresponding to the corresponding molds to support the fiber film covering the molds; each mold has an outer side. There is an air inlet, and a number of air holes are formed on the mold core. After the air injection pipe at one end of the vacuuming module can be embedded and joined with the air inlet, the vacuum machine is started to perform the vacuuming operation, so that the fiber membrane is Vacuum adsorption on the surface of the mold core to form the desired product shape, and after cooling and hardening to form the desired fiber product, the fiber product is released from the mold and then transported to the cutting machine for cutting; the cutting machine is a Used to cut fiber products into finished products. A fiber product vacuum forming equipment according to claim 6, wherein a plurality of molds arranged on the frame can be arranged on a conveying unit for cyclic movement, and the conveying unit includes first and second transmission wheels and sleeves. The chain belt between the two transmission wheels, wherein the first transmission wheel can be driven to rotate by the power source, and then drive the chain belt to move in the conveying stroke, and the molds are attached to the outer edge surface of the chain belt, which can Along with the transmission of the chain belt, the belt moves cyclically; in addition, a link belt is arranged between the first transmission wheel and the guide rod to drive the guide rod to rotate at the same time. A fiber product vacuum forming equipment according to claim 7, wherein the frame corresponding to the conveying unit is provided with two sets of limit units above the front end of the molds, and the two limit units are arranged on the corresponding The position of the two sides of the mold, each of the limit units includes a telescopic frame, a limit plate and a number of pressure rollers, one end of the telescopic frame is fixed on the top of the frame, and the other end is assembled with the limit plate, these The pressure rollers are pivoted on the limit plate at intervals. When the fiber film material covers the molds, the telescopic frames of the two limit units will extend to drive the limit plates to move down, so that the pressure rollers press against the molds. On the two side edges of several molds, the cyclic movement of the molds is driven by the conveying unit to position the fiber membrane. A fiber product vacuum forming equipment according to claim 6, wherein the frame is provided with a rolling wheel at an appropriate position above the other end of the film forming machine, and a number of positioning holes are formed at equal angles on both sides of the rolling wheel for the purpose of A number of rods are set between the two opposite positioning holes. When the production operation is in progress, when the hardened fiber product is to be demolded, the fiber product hardened and formed in the mold can be removed from the mold and placed in the mold. After the rod body of the rolling wheel is mounted, the other hardened fiber products can be driven out of the mold along with the rotation of the rolling wheel. The vacuum forming equipment for fiber products according to claim 6, wherein after the fiber products are demolded, they can be passed through a sterilizer to perform sterilization operation by using ultraviolet rays.

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