KR101653613B1 - Pulp molding apparatus - Google Patents

Abstract

Disclosed is a pulp mold manufacturing system comprising a molding part and a drying part. More particularly, the molding part is immersed and ascends in a raw material box and molds a pulp, while perpendicularly moving downwards and upwards. A water blocking member is additionally arranged in a molding device or the raw material box, and alleviates an eddy in the pulp inside the raw material box due to the upward and downward movements of the molding device. Thus, the pulp mold manufacturing system can produce favorable products having a uniform thickness.

Description

Pulp mold manufacturing system {PULP MOLDING APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulp mold manufacturing system, and more particularly, to a pulp mold manufacturing system capable of producing a good product having a uniform thickness by using a paper slurry and an organic material to form a pulp mold, To a pulp mold manufacturing system capable of enhancing the merchantability and productivity of a product.

BACKGROUND ART Generally, a pulp mold forming system is used for making various kinds of packaging materials, cushioning materials, floor mats and the like, using a paper slurry in the form of a liquid pulp made by mixing waste paper or the like with water and dissolving it, As a representative example, a rotary forming method in which a molded pulp is formed is exemplified.

As shown in FIG. 1, in the pulp mold forming apparatus of the rotary forming system, the mold machine 10 descends to the raw material box B by rotation, and dives into the raw material box B containing the pulp P , Vacuum molding, dewatering, and trans- fer are repeated.

The pulp mold forming apparatus according to the rotary forming method comprises a raw material box B for storing and feeding pulp P as much as necessary for forming from the main tank T as shown in FIG. 1, B for forming the pulp P into a specific shape and a drying section for drying the pulp molded in the forming section.

Here, the forming unit includes a mold unit 10 for forming a pulp molding M by molding the pulp P into a specific shape, a take-out aspirator 12 for transferring the pulp molding M formed by the mold unit 10 to the drying unit, (20).

2, the mold apparatus 10 includes a box-shaped mold box 12 and a mesh 14 having a specific shape at one side thereof. The mold 10 includes a mold 12 attached to the mold box 12, A mold frame 13 and suction and discharge pipes 16 and 17 connected to both ends of the mold box 12 and rotatably supporting the mold box 12.

The suction aspirator 20 comprises a suction chamber 22 and a suction frame 24 attached to the lower side of the suction chamber 22. The suction frame 24 is connected to the mesh 14 of the mold 10, And suction / discharge hoses (26) (27) are connected to the suction chamber (22).

A suction device (not shown) such as a vacuum pump is connected to the suction pipe 16 of the mold tool 10 and the suction hose 26 of the take-out suction device 20, and the discharge pipe 17 and the discharge hose 27 Is connected to a pressurizing device (not shown) such as an air compressor.

1, the drying unit includes a drying furnace 30 provided with a plurality of blowers 32 for blowing hot and dry hot air, and a conveying mechanism such as a conveyor 34 constructed along the blower 32 have.

According to the conventional rotary molding type pulp mold forming system, the molding process by the mold tool 10, the take-out conveying process by the take-out aspirator 20, and the drying process by the drying furnace 30 are sequentially performed As a result, a complete pulp mold product is produced.

First, the mold frame 13 attached to the mold box 12 of the mold apparatus 10 is inserted into the raw material box B containing the pulp P with the mesh 14 being pulled down The pulp P is adsorbed on the surface of the mesh 14 by a vacuum suction operation through a vacuum pump. At this time, the moisture in the raw material container B is discharged through the suction pipe 16 through the mesh 14.

After the pulp P is continuously adsorbed and its thickness reaches a predetermined value, the mold box 12 rotates out of the raw material box B after the pulp molding M is molded, And the pulp molding M adsorbed thereon are directed upward.

At this time, after the pulp mold mol (M) comes out of the raw material box (B), the take-out aspirator (20) descends so that the suction mold (24) and the pulp molded product (M) The suction operation by the pump is stopped and the discharge action by the air compressor is performed so that the pulp mold mol M is separated from the mesh 14. Conversely, in the suction box 22 of the take-out suction device 20, The pulp mold mol (M) is adsorbed to the suction frame (24).

The pulp molded product M adsorbed on the take-out aspirator 20 is moved to the drying section and put on the conveyor 34. The pulp molded product M passes through the drying furnace 30 by the operation of the conveyor 34, And dried by hot and dry hot air blown out to be completely molded.

That is, according to the pulp molding system of the drying furnace as described above, the pulp molding M is formed and dried by the simple molding operation of the mold apparatus 10 and the hot air drying operation of the drying furnace 30.

However, according to the pulp mold system of such a rotary forming method, the following problems occur at the time of forming a molded product.

First, the pulp P is adsorbed to the mesh 14 by the operation of the mold apparatus 10 during the molding of the pulp molding M, and then the mold box 12 rotates to come out of the raw material box B, The pulp P adsorbed is caused to flow toward the leading end side of the raw material container B later in the rotation direction of the mold compartment 12 so that the thickness of the pulp molding M varies depending on the part But, the edges are not cleanly finished and become dirty.

As a result, weight deviations occur in the forward and backward directions in the rotating direction, and the dewatering rate due to this is not uniform.

Secondly, since the pulp molding M contains a large amount of water at the time of pressing by the take-out aspirator 20, the suction frame 24 is not strongly pressed against the pulp molding M, The upper surface of the substrate is not smoothly formed.

Third, there is a problem that the pulp molded product (M) having a high water flow rate in the drying process is directly contacted with hot air, thereby shrinking and deforming due to rapid water evaporation.

Fourthly, there is a problem that the pulp phenomenon occurs in the pulp (P) in the raw material container (B) due to the rotation of the mold tool (10), and the thickness of the pulp molded product (M) may be changed.

Korean Patent Publication No. 2000-0012281

Accordingly, it is an object of the present invention to solve the above-mentioned problems, and an object of the present invention is to provide a pulp mold forming system including a forming unit and a drying unit, wherein the pulp molding apparatus comprises: And a pulp mold member is provided so as to alleviate the swirling phenomenon of the pulp inside the raw material container due to the upward and downward movement of the mold, thereby providing a pulp mold manufacturing system capable of producing a good product having a uniform thickness.

According to an aspect of the present invention, there is provided a pulp mold forming system including a forming part and a drying part, wherein the forming part includes a mold box vertically moved up and down in a raw material container, a mold frame attached to the mold box, A mold attached to an upper surface of the mold frame and having a mesh on which the pulp molding is loaded by adsorbing the pulp and a suction / discharge hose connected to the mold box; And a suction / discharge pipe attached to the bottom of the suction case and having a shape corresponding to the mold frame, and a suction / discharge pipe connected to the suction case, wherein the pulp molding placed on the mesh is pressed, A suction unit for transferring the water to the drying unit; A pulp mold having a plurality of lattices formed with an inflow hole through which pulp can pass and a dam member having a fixing member for fixing the mold to one side of the mold, Manufacturing system.

According to the above-described pulp mold manufacturing system of the present invention, it is easier to control the product thickness than the rotary forming method in which a uniform thickness can not be obtained by using the vertical up-down molding method, Since the vacuum generated by the suction hose of the pulp molding M acts in the gravity direction, it is very advantageous for dehydrating the pulp molding M during the primary molding.

Further, since the after-press is performed by the second mold unit of the present invention, it is possible to form a smooth surface on the pulp molding, increase the flavor and aesthetics associated with the food, and, if necessary, There is also an effect that can be expressed. As a result, foreign matter or wire marks remaining on the surface can be removed by the second mold.

Further, since the wire mesh conveyor of the present invention has a high rate of opening, the flow of the hot air by the blower is smoothly circulated in the drying furnace, so that the hot air is directly applied to the pulp molding material instead of the indirect hot air, The additional portion can be relatively small and the length can be shortened.

In addition, according to the present invention, it is possible to produce a variety of products such as packaging buffers and egg plates, which are bent in three-dimensional shapes, and flat products,

1 is a perspective view showing a conventional rotary type pulp mold forming apparatus.
Fig. 2 is a perspective view showing the mold and the aspirator in Fig. 1. Fig.
Fig. 3 is a perspective view showing the overall appearance of a pulp mold manufacturing system according to the present invention.
4 is a perspective view showing the aspirator and the mold tool in Fig.
5 is a perspective view showing the water film member in FIG.
FIG. 7 is a perspective view showing an overall structure of a pulp mold manufacturing system according to another embodiment of the present invention.
8 is a perspective view showing the aspirator and the mold tool in Fig.
9 is an enlarged perspective view of a portion A 'of Fig. 7 enlarged.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

First, a pulp mold manufacturing system according to the present invention is devised to solve the problems of the rotary molding type pulp mold forming apparatus as described above in the background art, and is largely divided into a forming unit and a drying unit as shown in FIG.

In this case, the forming unit includes a mold-up device 100 of a vertical up-down type and an aspirator 200 located at an upper end of the mold device 100. In detail, as shown in FIGS. 3 to 5, The mold 100 of the mold 100 includes a box type mold box 110 vertically moved up and down in the raw material box B by a pneumatic and hydraulic cylinder and a mold frame 120 attached to the mold box 110, A mesh 130 attached to the upper surface of the mold frame 120 and a suction / discharge hose 140, 150 connected to the mold box 110. In this case, a suction device such as a vacuum pump is connected to the suction hose 140, and a pressurizing device such as an air compressor is connected to the discharge hose 150.

The aspirator 200 includes a suction box 210 in the form of a box, a suction frame 220 attached to a lower surface of the suction box 210 and having a shape corresponding to the mold 120, 210 connected to the suction / discharge pipes 230, 240. In this case, the suction chamber 210 may have a heater (not shown) therein. A suction pipe 230 to which a vacuum force of the vacuum solenoid valve is applied and a discharge pipe 240 to which the air pressure of the air sol valve is applied are connected to one side of the suction box 210.

The mesh 130, which is placed on the upper surface of the mold frame 120, is covered with a steel material so that only the pulp contained in the pulp solution is adsorbed when the mold 100 is lifted, thereby completing the pulp molding M. Further, the pulp (P) may be appropriately selected because the time required for forming the pulp becomes too long and the thickness formed at the same time becomes thick when it is thickened.

First, the mold frame 120 attached to the mold box 110 of the mold 100 is inserted into the raw material box B containing the pulp P, and the suction hose through the vacuum pump The pulp P is adsorbed on the surface of the mesh 130 by the vacuum suction operation of the vacuum pump 140.

After the pulp P is continuously adsorbed and its thickness reaches a predetermined value, after the pulp molding M is formed, the mold box 110 is lifted and comes out of the raw material box B.

In this case, a vortex phenomenon is generated in the pulp (P) of the raw material container (B) when it is desired to increase the speed of immersing or raising the inside of the raw material container (B) of the mold device (100) Even if the descending speed of the mold 100 is slow, even after the mold 100 is locked into the raw material container B, strong vortexing phenomenon can be prevented completely even when the suction hose 140 is strongly inhaled There was no problem.

Particularly, in order to produce a seedling mattress mat, the mold 100 is widely formed due to the nature of the mat. When the mold 100 is immersed in the raw material housing B, The pulp raw material adsorbed to the mold box 110 is swept away from the periphery, and the thickness and the thickness of the pulp molding M are different from each other. Thus, it is difficult to produce a uniform product of the final hair growth mat. If the mold box 110 lowers the speed of rise or fall to reduce such vortexing, a problem of low productivity occurs.

Accordingly, in the present invention, a water film member 300 is disposed at the upper end of the mold 100 so as to be spaced apart from the mold 100, thereby solving the above-mentioned problem.

A fixing member 320 fixed to the upper end of the mold 100 or fixed to the upper end of the raw material box B may be provided on one side of the water film member 300 do.

6, a plurality of grids 310 are coupled to each other at upper ends of the mold basin 110 so as to form a plurality of accommodating spaces S surrounding the mold frame 120, And an inlet hole 311 through which the pulp P can pass is formed in the grid 310.

Therefore, when the mold 100 sinks into the raw material housing B or exits to the outside, the vortex phenomenon is relieved primarily by the lattice 310 of the water film member 300, and then the lattice 310 The pulp P is passed by the inflow hole 311 of the main pulley 311, and the secondary vortex phenomenon can be removed.

The suction device 200 is lowered and the suction frame 220 and the pulp molding M are closely contacted with each other. At this time, in the mold box 110, The suction operation of the suction hose 140 by the air compressor is stopped and the discharging operation of the discharge hose 150 by the air compressor is performed so that the pulp mold m is detached from the mesh 130. On the other hand, In the box 210, the suction action of the suction pipe 230 by the vacuum pump is performed, so that the pulp mold mol M is sucked to the suction frame 220.

The pulp molded product M adsorbed to the suction device 200 is moved to the drying section and dropped onto the conveyor 320 of the drying furnace 310 by the discharging action of the discharge pipe 240,

In this case, the pulp mold moler M, which is a semi-finished product molded in the mold 100, which is a lower mold, is adsorbed to the upper suction type suction device 200, the suction device 200 moves vertically and horizontally, The conveyor 320 is lowered to a height of 1 cm to 10 cm on the conveyor 320,

Thereafter, the mold 100 is cleaned and then submerged into the raw material container B, and the suction device 200 is returned to the position of the mold 100 by the horizontal and vertical movements.

This vertical up-down method is easier to control the product thickness than the rotary forming method in which a uniform thickness can not be obtained, and has a small molding weight. In addition, since the vacuum generated by the suction hose 140 acts in the direction of gravity, the pulp molding M is advantageous in dehydration during the primary molding of the pulp molding M, and the wrinkles of the pulp molding M are reduced.

The thickness variation of the pulp molding M due to the swirling phenomenon of the pulp P is reduced by the water film member 300 when the mold 100 is submerged into the raw material container B or externally, It becomes possible to manufacture a mat for a seedling.

Thereafter, the pulp-molded product M enters the drying unit. The pulp molding M passes through the drying furnace 310 by a conveying mechanism such as the conveyor 320, and is dried. At this time, the drying furnace 310 discharges hot air through the blower 330 to dry the pulp molding M by the convection heat and the radiant heat of the hot air.

3, the drying unit according to the present invention includes a conveyor 320 having a single-layer structure, which is not a multi-layer structure, and a pulp molding M at an upper end of the conveyor 320, And the drying furnace 310 performs the hot air drying by the blower 330 without using a separate carrier.

In order to efficiently perform drying in the drying furnace 310, the surface of the conveyor 320 is formed of a wire mesh made of a steel material. The wire mesh conveyor 320 has a structure in which heat is directly transferred There is an advantage that the heat transfer rate is particularly high due to the drying method.

In the drying unit of the present invention, since the opening ratio of the wire mesh conveyor 320 is high, the flow of hot air by the blower 330 is smoothly circulated in the drying furnace 310, The drying efficiency is good because the direct hot air is applied instead of the indirect hot air, so that the drying part can be relatively small, the length can be shortened, and the maintenance of the facility is also easy.

In this case, the pulp molded product M that has undergone the primary drying process by the aspirator 200 and the secondary drying process in the drying furnace 310 passes through the drying unit. In this case, the drying furnace 310 of the drying unit, Is designed to have a single-layer structure, not a multi-layer structure, so as to increase productivity of the product and to dry quickly.

Accordingly, the pulp molding M is discharged to the outside of the drying furnace 310 at a predetermined interval, and the drying time is also set by appropriately adjusting the residence time in the drying furnace 310. The hot air temperature of the blower 330 in the drying furnace 310 may vary from product to product because the mold thicknesses of the pulp molding M are substantially similar to each other, Lt; 0 > C to 350 < 0 > C.

7 to 9 show another embodiment of the present invention in which the water film member 300 is attached to the upper end of the raw material container B and the mold frame 120 of the mold box 110 is flat This is a perspective view showing that the shape is not curved.

7 to 8, the water film member 300 is attached to the upper end of the raw material container B instead of the mold 100. The position of the water film member 300 is determined by the position of the raw material container B, At a predetermined distance from the height of the pulp (P).

In this case, the height of the pulp P is supplied from the main tank T and is maintained at a constant height. When the concentration of the pulp P is high and the inflow hole 311 of the water film member 300 is clogged It is a configuration that can be installed.

That is, when the water film member 300 is attached to the upper end of the mold 100, when the mold 100 is submerged in the raw material container B, the water film member 300 is also submerged into the raw material container B, If the concentration of the pulp P is high, the inflow hole 311 may become clogged and the buffering effect of the pulp P may be deteriorated.

Therefore, when the water film member 300 is attached to the raw material container B at a constant interval to the height of the pulp P, even when the concentration of the pulp P is high, the vapors of the pulp P are continuously It can be relaxed.

The embodiments of the pulp mold manufacturing system of the present invention described above are merely exemplary and those skilled in the art will appreciate that various modifications and equivalent embodiments are possible in light of the above teachings. You will know. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: mold 110: mold
120: mold frame 130: mesh
140: Suction hose 150: Discharge hose
200: aspirator 300: water film member
310: Grid 311: Inlet ball
320: Fixing member

Claims (2)

In a pulp mold forming system including a forming section and a drying section,
The forming unit includes:
A metal mold 120 attached vertically up and down in the raw material box B and attached to the mold box 110 and a metal mold 120 attached to the upper surface of the metal mold 120 to adsorb the pulp A mold (100) having a mesh (130) on which the pulp molding (M) is loaded and a suction / discharge hose (140, 150) connected to the mold box (110);
A suction frame 220 attached to the lower surface of the suction box 210 and having a shape corresponding to the mold frame 120 and a suction / discharge pipe 210 connected to the suction box 210, 230, and 240, a suction unit 200 for pressing the pulp molded product M placed on the upper side of the mesh 130, suctioning the pulp molded product M, and transferring the pulp molded product M to the drying unit; And
A plurality of lattices 310 formed at an upper end of the mold box 110 and having an inlet hole 311 through which the pulp P can be passed to form a receiving space S for enclosing the mold frame 120, , And a fixing member (320) for fixing the mold assembly (100) to one side of the mold assembly (100);
The pulp mold manufacturing system comprising: The method according to claim 1,
The drying unit includes:
A blower 330 provided in the drying furnace 310 for performing hot air drying on the pulp molding M and a blower 330 for passing the pulp molding M through the drying furnace 310, And a conveyor (320) whose surface is formed by a wire mesh.

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