JP4392196B2 - Equipment for manufacturing pulp molded products - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for producing a pulp mold molded product (pulp paper-molded product), and more specifically, paper-making molding for removing a pulp component from a pulp raw material liquid and dehydrating it to obtain a pulp mold intermediate molded product. The pulp mold intermediate molded product formed in the mechanism and the papermaking and molding mechanism is pressed under heat to perform shape heat setting, and further pressed under heating to obtain a pulp mold molded product in which pulp cellulose is cured The present invention relates to an apparatus for manufacturing a pulp molded product having a curing mechanism.
[0002]
[Prior art]
Conventionally, for the sales and storage of foodstuffs, synthetic molded products made from synthetic resin, such as polyurethane, are often used as dishes and other containers, but they are synthesized for the need for environmental protection. The use of resins is limited and the use of natural materials is required. Under such circumstances, pulp cellulose, which has been conventionally used for paper products, has attracted attention as a natural material for molding such as containers, and various technological developments have been carried out.
[0003]
In these technological developments, since the manufacturing equipment for paper making containers using pulp cellulose as a raw material is fundamentally different from the manufacturing equipment for polyurethane containers, etc., various studies have been conducted. There has been proposed a manufacturing apparatus that uses a pulp component such as pulp cellulose from a pulp raw material liquid to obtain a pulp molded product molded into a three-dimensional shape.
[0004]
For example, an apparatus for producing a papermaking container is proposed in which a pulp component is removed from a pulp raw material liquid, moisture in the pulp component is dehydrated, and the resulting water-containing papermaking container is pressed under heating and dried. (See Patent Document 1 (Japanese Patent Laid-Open No. 6-49800).) In the manufacturing apparatus, a pulp component is extracted from a pulp raw material liquid, and a water-making paper container is obtained by dehydrating water in the pulp component to obtain a water-containing paper container. It has a heating press mechanism, and after pressurizing the water-containing papermaking container in the papermaking formation space where the lower mold of the papermaking mold that picks up the pulp components in the pulp raw material liquid rises and lowers the upper mold, A configuration is adopted in which the mold is transferred to a heating press mechanism and the upper mold of the heating press is lowered and pressed. Further, a pair of gold metal molds that are immersed in a pulp slurry and sucked, the water-containing deposit obtained on the paper-making mold is sucked into the mold, and the water-made paper products are engaged with each other. There is provided an apparatus for manufacturing a paper-molded product that is transferred to a mold and heated and dried while controlling the position of the mold so as to have a predetermined clearance (see Patent Document 2 (Japanese Patent Laid-Open No. 2000-34700)). .
[0005]
In this manufacturing apparatus, a papermaking mold that removes the papermaking components from the raw material of the papermaking product and a dewatering mold that transfers the hydrous papermaking product in the papermaking mold (the mold is placed on the rotary table at regular intervals). And the paper-molded product is dry-molded).
[0006]
However, all of the manufacturing apparatuses disclosed in these prior arts are such that the paper making means and the heating press means of the pulp component in the pulp slurry are independently engaged with each other, and the lower mold is engaged with the upper mold. And the mechanism is complicated. In addition, the operation is batch-type, and the number of steps is large, and there is still a point to be improved for sufficient automation.
[0007]
Currently, food containers, etc. as pulp mold products are used in large quantities at the same time, so it is necessary to stably supply large quantities of the same quality, which must be manufactured efficiently and at low cost. Is required. Under such circumstances, it has been eagerly desired to complete an automated manufacturing apparatus for molded articles having stable quality.
[0008]
[Patent Document 1]
JP-A-6-49800 [Patent Document 2]
Japanese Patent Laid-Open No. 2000-34700
[Problems to be solved by the invention]
Therefore, the subject of the present invention is an apparatus having a simple mechanism under a situation where automation of a production apparatus for a pulp molded product that has been conventionally developed is not sufficient, and pulping a pulp component from a pulp slurry, And a papermaking and molding mechanism to obtain a pulp mold intermediate molded product by dehydration, a curing mechanism that presses the pulp mold intermediate molded product under heating, and controls shape and pulp cellulose by controlling temperature and pressure, and product automatic An object of the present invention is to provide an automated manufacturing apparatus by organically coupling a transport mechanism.
[0010]
Another object of the present invention is to provide an apparatus for manufacturing a pulp mold product, which can reduce man-hours and processes and can greatly reduce the time for manufacturing a molded product using a pulp component from pulp slurry as a raw material.
[0011]
[Means for Solving the Problems]
Therefore, in view of the development status of a conventional pulp mold molded product manufacturing apparatus, the present inventor has made extensive studies in order to solve the above-mentioned problems. As a result, the ridge forming mold and the curing mold are fixed on the same mounting board. At the same time, a movable configuration capable of reciprocation is provided, and by placing a pressure core mold that can be raised and lowered at an upper position, either the ridge-forming mold or the curing mold moves to a position below the pressure core mold. With this configuration, it is conceived that the reciprocating motion of the wrinkle forming type and the curing type can achieve automation efficiently with a simple structure by using only one pressure core type provided at the pressing position. Pay attention to the simultaneous operation of multiple processes if it is configured so that the pulp mold product is detached from the curing mold and transferred to the automatic product transport mechanism while the mold is in a pressurized state. Based on these findings, It has been reached in the completion.
[0012]
Thus, according to the present invention,
A filling bucket (2) to which pulp slurry is fed;
A koji forming mold (3) provided to be connected to the lower portion of the filling bucket (2) and scraping off the pulp component in the filling bucket;
Pressurized core mold (13) capable of forming the papermaking molding zone by moving the wrinkle forming mold (3) to a pressing position and engaging with the wrinkle forming mold (3). A papermaking mechanism consisting of and
A pressure core mold (13) having means for sucking and transferring the pulp mold intermediate molded product formed in the papermaking molding mechanism;
A curing die (7) that moves to a pressure position, engages with the pressure core die (13), and heat-presses the pulp mold intermediate molded product transferred from the pressure core die (13); And an apparatus for producing a pulp molded product, comprising: a curing mechanism comprising:
[0013]
The present invention comprises a papermaking molding mechanism as described above and a curing mechanism, and the crease forming mold of the papermaking molding mechanism and the curing mold of the curing mechanism are simultaneously reciprocated, and in the press position, the pulp mold intermediate molding is performed by the pressing means. Although it is comprised so that goods may be pressed, the thing of the following 1) -3) is included as a more preferable embodiment.
1) The manufacturing apparatus of the said pulp mold molded article which provides a pulp water liquid discharge port pipe (1) and a pulp water liquid discharge port (1 ') in the horizontal direction of the said filling bucket side surface.
2) The apparatus for producing a pulp molded product, wherein the movable platen (6) is slidable on the rail (12).
3) The manufacturing apparatus of the said pulp mold molded product which is a position where the said pressurization position exists in the hardening type | mold (7) which is a downward position of the pressurization core type | mold (13) shown in FIG.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings.
The manufacturing apparatus of the pulp molded product according to the present invention is shown in FIG. FIG. 6A is a plan view of the outer appearance of the manufacturing apparatus, and FIG. 6B is a front view showing an example in which four pressure core molds (13) are arranged through a product outlet. FIG. 6C is a right side view of the manufacturing apparatus, and shows that four connected products have been taken out by the product take-out means (20) from the product take-out port on the front side of the apparatus. The product is placed on the conveyor (30) and transferred to the next process. According to the figure, the arrangement of the dies is adjusted so that four products can be manufactured simultaneously, and cutting is performed in the final process (not shown). The operations of these molds and the various operations in steps A to F shown in FIG. 8 are configured to operate according to a program of a control mechanism incorporated in the control BOX (25).
[0015]
According to FIG. 1, on the gantry frame 17 ′, a ridge-forming mold (3) is provided connected to the lower portion of the filling bucket (2), and connected to the ridge-forming mold (3) 4) is provided. In addition, the water absorption / distribution panel (4) is fixed to the mounting plate (5), and the mounting panel (5) is fixed to the movable plate (6). A number of suction holes are perforated on the side surface and the bottom surface of the koji forming mold (3), and the pulp component is designed to be removed. Moreover, it is preferable to lay a wire mesh (not shown) on the inner wall surface of the ridge forming mold. The interior of the water absorption / distribution panel (4), the mounting panel (5) and the movable panel (6) can be designed to have an arbitrary structure capable of absorbing water. However, as shown in FIG. It is preferable for the dispersion of pressure that the entire structure is a cavity and a passage is provided between the cavities. FIG. 5 shows a cross-sectional structure of an example in which the hook forming mold (3), the bottle water absorbing and distributing board (4), the mounting board (5), and the movable board (6) are connected and fixed. In the figure, the hatched portion is a hollow portion, and is provided between the soot-forming molds 3 ′, 3 ″ and 3 ′ ″ provided as a specific example of the soot-forming mold (3) and the soot-absorbing distribution board (4). A plurality of passages 3.1 are provided and are connected to the internal cavities 3.2 and 4.1, passage 4.2. The passage 4.2 is connected to the water absorption pipe 10 through the passage 5.1 and the hollow portion (5.2) of the mounting plate (5), and further through the hollow portion (6.1) of the movable plate (6).
[0016]
The soot-forming mold (3) and soot-absorbing / distributing panel (4) may be independent device elements, or may be integrated with the internal structure. Further, it may have an integrated structure with the mounting plate (5). By making the internal structure of the water absorption / distribution board (4), mounting board (5) and movable board (6) hollow as described above, the suction pressure applied to the bowl forming mold (3) is dispersed and uniformed. The thickness of the pulp mold intermediate molded product formed on the forming mold (3) can be made uniform, and a molded product excellent in strength can be obtained.
[0017]
The pulp slurry is supplied to the filling bucket (2) from the discharge port (1 ′) of the pulp water solution discharge pipe (1), and the pulp component is removed by passing through the koji forming mold (3). Deposited on forming mold. The water in the pulp slurry passes through the soot-forming mold (3), passes through the soot-absorbing distribution board (4), and from the water absorption / exhaust pipe (10) provided on the bottom surface of the movable board (6) to the outside of the frame frames 17, 17 ′. To be drained. The movable platen (6) is placed on the movable rail (12) shown in FIG.
[0018]
As the curing mold (7) constituting the curing mechanism, a mold having the same form as that of the wrinkle forming mold selected so as to obtain a molded article having a desired form is adopted. Suction holes are provided on the bottom and side surfaces. By these suction holes, it is possible to perform a suction action of steam generated by heating the moisture contained in the intermediate molded product during the shape heat setting step D and the curing step E of the pulp mold intermediate molded product. The curing die (7) is adjacent to the mounting plate (5) to which the water absorption / distribution plate (4) provided in connection with the lower portion of the bag forming die (3) constituting the papermaking and forming mechanism is fixed. It is provided connected to the fixed intake air distribution board (8). The internal structure of the hardened intake distribution board (8) is provided with a passage and a hollow portion similar to the water-absorbing water distribution board (4), so that the suction pressure is distributed. The curable mold (7) is provided with a heating means capable of raising the temperature to at least about 250 ° C. in order to keratinize the pulp cellulose fiber.
[0019]
A pressure core mold (13) is provided above the curing mold (7) in FIG. 1, and a core board (14) is fixedly connected to the pressure core mold (13). ) Is connected to the pressure cylinder (16), the pressure core mold (13), the core disk (14), The pressure suction cup (15) is configured to be movable up and down as a whole by controlling the pressure of the pressure cylinder (16). The pressure core mold (13) is provided with a heating means, and a plurality of suction holes (not shown) are perforated (not shown), and the vapor generated during the suction transfer and heating of the intermediate molded product as will be described later. A suction action is performed.
[0020]
FIG. 4 illustrates a cross-sectional view of the internal structure of the pressure core mold (13), the core disk (14), and the pressure suction disk (15). The pressure core mold (13) is provided with three convex portions so that three pulp molded products are manufactured. A passage 13.1 is provided in the convex portion. The hatched portion of the joint between the core disk (14) and the pressure suction disk (15) shown in FIG. 4 indicates a hollow structure, and the passage 15.1 is connected to the pressure cylinder (16). The cavity structure is intended to disperse the suction pressure, and can apply a uniform suction force to the pressure core mold (13).
[0021]
The wrinkle forming mold (3) and the curing mold (7) are arranged adjacent to the same mounting board (5) through distribution boards (4) and (8), respectively, and drive the movable board (6). The mechanism (18) is configured to be movable in the left-right direction.
[0022]
According to FIG. 1, when the koji forming mold (3) is moved to a position below the pressurizing core mold (13), which is the pressing position, the pulp mold intermediate molded product on the koji forming mold (3) is Pressing is performed by lowering the pressure core mold (13), and squeezing and dehydration drying are performed. In this process, the curing mold (7) is moved to the product conveying mechanism, the pulp molded product is separated from the curing mold (7) by the suction means (21), and is conveyed by the product take-out means (20). Is placed on the conveyor 30 shown in FIG.
[0023]
The pressure core mold (13), the core disk (14), and the pressure suction disk (15) are installed on the gantry frame 17 so as to be movable up and down, and a male pressure core mold (13) and a female mold are formed. When the mold (3) or the curing mold (7) is engaged and pressed, the pulp mold intermediate molded product is controlled to be suitable for drawing and dewatering suction or heating / pressurization. The core board (14), the pressure suction board (15), etc. connected to the pressure core mold (13) have a suction action, and are sucked into the pulp mold intermediate formed body formed on the cocoon forming mold (3). It functions as a means for applying force and transferring to the curing mold (7).
[0024]
A position below the mounting position of the pressure core mold (13) is a pressure position, and immediately below that is a hook forming mold (3) or a curing mold (7) that engages with the pressure core mold (13). Is fixed so that the movable platen mounted on the movable rail moves to the left and right and can be pressurized.
[0025]
FIG. 2 is a schematic view showing elements constituting a papermaking and forming mechanism and a hardening mechanism of the main part of the apparatus for manufacturing a pulp molded product according to the present invention. In the papermaking and molding mechanism, the filling bucket (2), the cocoon forming mold (3), and the culvert water-absorbing distribution board (4) are moved to the pressurizing position, and the pressurizing core mold (13) is lowered to perform squeezing and dewatering. Consists of states. On the other hand, the curing mechanism moves the curing mold (7) and is installed directly under the pressure core mold (13), and the pulp mold is intermediated with the curing mold (7) by the lowering of the pressure core mold (13). The pulp cellulose is keratinized by pressing under heating of the molded product.
[0026]
FIG. 3 is an overall perspective view of the movable mold. The wrinkle forming mold (3) and the curing mold (7) are attached to the mounting board (5), and the movable board (6) slides on the movable rail (12) and can move left and right. This shows the peculiarity of the mechanism of the apparatus for producing a pulp molded product according to the present invention.
4 and 5 show the internal structure of the pressure core board (13), core board (14) and pressure suction board (15) shown in FIG. 1, and the soot formation mold (3), the water absorption and distribution board (4), respectively. It is an enlarged view which shows an example of the cross section of the internal structure of a mounting board (5) and a movable board (6).
[0027]
The apparatus for producing a pulp mold product according to the present invention has the above-described configuration, but the cocoon forming mold (2) and the curing mold (7) are fixed on the same mounting board and descend from an upper position. There is a structural feature in that it is reciprocated left and right so that a desired pulp mold intermediate molded product is pressurized by the pressure core mold (13). It is a simple operation called reciprocating motion, and since it has a simple structure in terms of mechanism, almost no failure occurs.
[0028]
Next, the outline | summary of the operation state of the principal part of the manufacturing apparatus of the pulp mold molded product which concerns on this invention is shown typically according to FIG.
The manufacture of the pulp molded product is performed by each step shown in FIG. 8, and the weeding from the pulp slurry in step A is performed in the state shown in (a) the paper making step in FIG. The pulp slurry filled in the filling bucket (2) is passed through the cocoon forming mold (3), whereby a hydrous pulp mold intermediate molded product S is formed on the cocoon forming mold (3).
[0029]
Next, the koji forming mold (3) is moved leftward, and the pressure core mold 13 is lowered from the upper position at the pressing position, and (b) the hydrous pulp mold on the koji forming mold (3) in the pressing and drying process. The intermediate molded product S is pressed and squeezed and dried to obtain a pulp mold intermediate molded product S ′. After pressing, suction is performed from the pressure cylinder (16), and the pulp mold intermediate molded product S 'is sucked into the pressure core mold (13) and raised.
At the same time, the curing mold (7) is moved to the right to set the pressure position, the pressure core mold (13) that adsorbs the intermediate molded product S ′ is lowered from the upper position, and the intermediate molded product S ′ is cured. The mold is moved by being transferred to the mold (7).
[0030]
Subsequently, the intermediate molded product S ′ is pressed by a pressure core mold (13) at a temperature of 150 ° C. or less, preferably 100 to 120 ° C., at 0.2 MPa or less, preferably 0.05 to 0.15 MPa. Heat-fixed, subsequently heated to 150-220 ° C, preferably 150-180 ° C, and pressed at 0.1-0.5 MPa, preferably 0.2-0.3 MPa to cure the pulp cellulose component. . The press time can be controlled to 10 to 30 seconds in consideration of the quality production speed of the molded product. In the meantime, the pulp forming mold (3) is supplied with the pulp slurry and the next papermaking is started. (D) After completion of the shape heat setting / curing step, the pressure core mold (13) rises and the curing mold (7) moves to the left, and the pulp mold product on the curing mold (7) Is adsorbed by the suction means (21) of the product transport mechanism and transported by the product take-out means (20). At the same time, the next intermediate molded product on the ridge forming mold (3) is pressed by the descending pressure core mold (13), and squeezing and dewatering are performed. Such a process is continuously performed, and a molded product is automatically manufactured by a systemized process.
[0031]
The apparatus for manufacturing a pulp mold product according to the present invention programs the pressurizing operation by the pressurizing core (13) by repeating the reciprocating motion of the koji forming mold (3) and the curing mold (7) as described above. Thus, papermaking and curing are automatically performed, and continuous production is possible.
[0032]
【The invention's effect】
The present invention is a pulp mold molded article by a simple mechanism of repeated reciprocation of the programmed mold forming mold (2) and curing mold (7) and intermittent lowering of the pressure core (13) as described above. This is an automated production. Since the mechanism is simple, there is an advantage that there is almost no failure. In addition, the entire apparatus can be reduced in size.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic view showing a configuration of a main part of a pulp molded product manufacturing apparatus according to the present invention.
FIG. 2 is a schematic view showing a main part of a pulp mold product manufacturing apparatus according to the present invention.
FIG. 3 is an external perspective view of the movable mold of the main part of the apparatus for manufacturing a pulp mold product according to the present invention.
FIG. 4 is a schematic cross-sectional view illustrating the internal structure of a pulp mold product manufacturing apparatus pressure core mold (13), core disk (14), and pressure suction disk (15) according to the present invention.
FIG. 5 is a schematic cross-sectional view illustrating the internal structure of a koji forming mold (3), a koji water absorption and distribution board (4), a mounting board (5), and a movable board (6) of a pulp mold product manufacturing apparatus according to the present invention. FIG.
FIG. 6 is a schematic view showing an appearance of a pulp molded product manufacturing apparatus according to the present invention.
FIG. 7 is an explanatory view showing an operating state of a main part of the apparatus for manufacturing a pulp molded product according to the present invention.
FIG. 8 is an explanatory view showing a manufacturing process of a pulp molded product performed by the apparatus for manufacturing a pulp molded product according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pulp water liquid discharge pipe 1 'Pulp water liquid discharge port 2 Filling bucket 3 Koji formation type 4 Kashiwa water distribution board 5 Mounting board 6 Movable board (with rail guide groove)
DESCRIPTION OF SYMBOLS 7 Curing type 8 Curing suction distribution board 9 Pulp water liquid supply pipe 10 Water absorption pipe 11 Air intake pipe 12 Movable rail 13 Pressure core type 14 Core board 15 Pressure suction board 16 Pressure cylinder 17 Mounting frame 17 Moving means 18

Claims (7)

A filling bucket (2) to which pulp slurry is fed;
A koji forming mold (3) provided to be connected to the lower portion of the filling bucket (2) and scraping off the pulp component in the filling bucket;
Pressurized core mold (13) capable of forming the papermaking molding zone by moving the wrinkle forming mold (3) to a pressing position and engaging with the wrinkle forming mold (3). A papermaking mechanism consisting of
The pressure core mold (13) having means for sucking and transferring a pulp mold intermediate molded product formed in the papermaking molding mechanism;
Curing die (7) which moves to a pressure position, engages with the pressure core die (13) and presses the intermediate molded product of the pulp mold transferred from the pressure core die (13) under heating. And a curing device comprising at least a curing mechanism comprising:
The wrinkle forming mold (3) and the curing mold (7) are fixed to the same movable platen (6) adjacent to each other via a mounting plate (5), and the movable platen (6) is horizontally arranged. By reciprocating, the wrinkle forming mold (3) and the curing mold (7) are alternately moved to the pressing position and engaged with the pressing core mold (13). Yes,
A water absorption / distribution board (4) provided connected to the bottom surface of the bottle forming mold (3), and a mounting board (5) to which the water absorption / distribution board (4) is fixed,
The mounting plate (5) is fixed and includes a movable plate (6) that can reciprocate to a non-pressurizing position or a pressurizing position, and the ridge-forming mold (3) and the ridge-absorbing water distribution It has hollow portions 3.2 and 4.1 provided in communication with each other in the respective internal directions from the contact surface of the panel (4), and the contact surfaces of the mounting panel (5) and the movable panel (6) Having cavity portions 5.2 and 6.1 provided in communication with each other in each internal direction,
An apparatus for manufacturing a pulp molded product, wherein the hollow portion 4.1 and the hollow portion 5.2 are communicated with each other through passages 4.2 and 5.1 . The components of the curing mechanism are:
Further, it is connected to the bottom surface of the curing mold (7), and fixed to the mounting plate (5) on which the water absorption / distribution plate (4) is fixed, adjacent to the water absorption / distribution plate (4). The apparatus for producing a pulp molded product according to claim 1, further comprising an intake air distribution board (8). The pressure core mold (13) is
Core board (14),
A pressure suction board (15) provided connected to the core board (14);
2. The apparatus for producing a pulp molded article according to claim 1, wherein the apparatus is a component added to a pressurizing means comprising a pressurizing cylinder (16) connected to the pressurization suction disk (15).   The pressure position is a lower position corresponding to the position where the pressure core mold (13) is installed, and the pulp mold intermediate molded product on the moved cocoon forming mold (3) or curing mold (7) On the other hand, the apparatus for producing a pulp molded product according to claim 1, which is a position where pressing is possible under heating.   The pulp slurry supply means to the filling bucket (2) includes a pulp water solution supply pipe (9), a pulp water solution discharge pipe (1) connected to the pulp water solution supply pipe (9), The apparatus for producing a pulp molded product according to claim 1, comprising a pulp slurry discharge port (1 ') perforated in the pulp water discharge port pipe (9).   The apparatus for producing a pulp molded product according to claim 1, further comprising an automatic product conveyance mechanism adjacent to the curing mechanism.   The apparatus for producing a pulp molded product according to claim 1, wherein the components of the automatic product conveyance mechanism are a product take-out means (20) and a suction means (21).