CN115627662A - Multilayer composite paper pulp bearing plate molding die and processing technology thereof - Google Patents

Abstract

The invention relates to a multilayer composite paper pulp bearing plate molding mold and a processing technology thereof, wherein the multilayer composite paper pulp bearing plate molding mold comprises: the forming die, the transferring die, the shaping lower die and the shaping upper die are arranged in the mould; utilize the shaping mould to accomplish the shaping of wet membrane of paper pulp, use and shift the mould and shift the wet membrane of paper pulp to in the design bed die, shift to in the design bed die, stack multilayer paper pulp wet membrane in the bed die and press its multilayer paper pulp to in the design mould after reaching the demand, reprocess, take off multilayer paper pulp at last, compound paper pulp is better for liking the bearing plate bearing capacity who makes with the technology, and multilayer stack also makes the bearing plate tensile, resistance to compression, ring crush strength is better, it is relatively poor to solve the paper pulp self bearing capacity that present traditional paper pulp processing technology processed out, the tensile, resistance to compression, the lower problem of ring crush strength.

Description

Multilayer composite paper pulp bearing plate molding die and processing technology thereof

Technical Field

The invention relates to paper pulp processing, in particular to a multilayer composite paper pulp bearing plate molding die and a processing technology thereof.

Background

The traditional processing technology of the paper pulp bearing plate is that paper pulp with specified concentration is transferred to a drying part for drying after vacuum dehydration after being molded by a mold, and the paper pulp bearing plate is limited by the physical conditions of the paper pulp material, so that the tensile strength, the compression strength and the ring crush strength of a product are low, the bearing capacity is limited, and the paper pulp bearing plate can only be used in the field of bearing plates of lighter objects.

Disclosure of Invention

The invention aims to solve the technical problem of providing a multilayer composite paper pulp bearing plate molding die and a processing technology thereof, and solves the problems of poor self bearing capacity, low tensile strength, low compression strength and low annular pressure strength of paper pulp processed by the traditional paper pulp processing technology.

The technical scheme for solving the technical problems is as follows: a multilayer composite paper pulp bearing plate molding mould and a processing technology thereof are characterized by comprising the following steps: the forming die, the transferring die, the shaping lower die and the shaping upper die are arranged in the mould; the forming mould is provided with a bulge and a groove which are required by pulp forming, the bulge and the groove are arranged on the bottom plate, and the forming mould is used for quickly forming the pulp; the projections and the grooves of the forming mould are mutually matched with the projections and the grooves on the transfer mould, and the transfer mould can absorb the formed paper pulp wet film on the forming mould; the shaping lower die is consistent with the forming die in structure and is used for containing the paper pulp wet film on the transfer die; the structure that moulds and shift the mould is unanimous in the design, holds down the wet membrane of multilayer paper pulp after the design and with the wet membrane crimping of paper pulp to mould in the design, mould and the lower mould of design crimping multilayer paper pulp wet membrane simultaneously, the back is dried, obtains multilayer composite paper pulp.

The invention has the beneficial effects that: the method comprises the steps of completing the forming of a paper pulp wet film by utilizing a forming die, completing the forming of the paper pulp wet film by utilizing a transfer die after the forming is finished, transferring the paper pulp wet film to the forming lower die by utilizing the transfer die, completing the forming of the paper pulp wet film on the forming die while transferring the paper pulp wet film to the forming lower die by utilizing the transfer die, and transferring the paper pulp wet film on the forming die to the forming lower die by utilizing the transfer die, so that a multilayer paper pulp wet film can be quickly formed, laminating a plurality of layers of paper pulp wet films in the lower forming die to meet the requirement, then pressing and connecting the multilayer paper pulp to the forming upper die, processing, and finally taking down the multilayer paper pulp.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, in order to ensure that each layer of paper pulp has good bearing capacity, the contour of the bulge is consistent with that of the groove, and the bulge and the groove are both arranged in a standard isosceles trapezoid shape.

Furthermore, in order to ensure that the shape structure of the edge part of the paper pulp wet film is fixed, two side edges of the forming die and the shaping lower die are provided with flange bulges, and the edge profiles of the flange bulges are matched with the grooves.

Further, in order to ensure the adaptability of the mold and avoid wasting the mold, the number of the grooves on the forming mold is consistent with the number of the protrusions on the transfer mold, and the number of the protrusions on the forming mold is consistent with the number of the grooves on the transfer mold.

A processing technology is applied to a multilayer composite paper pulp bearing plate molding die and is characterized by comprising the following steps:

s1: forming and vacuum dewatering pulp with specified concentration on a forming die for a set time; the setting time may be set according to the requirements of the existing single-layer pulp. The consistency is set to contain 2% pulp liquor. The time is typically set to 3-5 seconds.

S2: moving and adsorbing the formed paper pulp wet film to a transfer mold; when in use, the transfer mould is used for absorbing the paper pulp wet film.

S3: transferring the paper pulp wet film on the transfer mould to a shaping lower mould; the shaping lower die is a transfer position of the multilayer paper pulp wet film, and can reduce moisture before drying.

S4: uniformly placing a preset toughness material on a paper pulp wet film on a shaping lower die; the toughness of the bearing plate can be enhanced. The ratio of tough material to water is typically set to 1-1.5.

S5: repeating S1-S4, and placing a plurality of layers of paper pulp wet films on the shaping lower die; in order to realize a composite multilayer pulp bearing plate.

S6: pressing the multilayer paper pulp wet film on the lower shaping mould to the upper shaping mould; the method comprises the following steps of draining a part of liquid on the multilayer paper pulp, and pressing the drained part of liquid into a shaping upper die to ensure that the drying is quicker and more effective; the shaping upper die in the whole process is used for bearing and loading a plurality of layers of paper pulp wet films and drying the paper pulp wet films.

S7: and drying the multi-layer paper pulp wet film which is pressed together by the upper shaping mold and the lower shaping mold, and then taking down the paper pulp wet film.

Furthermore, quantitative waterproof and preservative agents are added into the pulp slurry of the S1, so that the influence of a humid environment on the strength of the bearing plate is effectively avoided. The content of the waterproof agent in the pulp liquid is about 1 percent generally, and the content of the preservative in the pulp liquid is 0.01 to 0.02 percent generally.

Further, the wet paper pulp film is fragile and cannot be held by hands or tools, and the wet paper pulp film which is just shaped can be damaged; and S3, blowing off the wet paper pulp film contained in the transfer mould by compressed air and then placing the wet paper pulp film on the shaping lower mould.

Further, when the S6 shaping upper die is used for containing the multilayer paper pulp wet film, a dryer is used for heating treatment. And drying the wet paper pulp film to ensure the hardness and strength of the paper pulp, and conveniently taking down the paper pulp to manufacture the bearing plate.

And further, when the wet S7 pulp film is taken down to form the multilayer composite pulp bearing plate on the upper die, the wet S7 pulp film is collected by a collector and is matched with compressed air for use.

The beneficial effect of adopting the further scheme is that:

1. a composite paper pulp bearing plate is manufactured among the multiple layers of paper pulp wet films, so that the bearing capacity is good; 2. the multiple molds are matched for use, so that the time delay among the forming, transferring and shaping of the wet paper pulp film can be avoided, and the whole manufacturing speed can be ensured.

Drawings

FIG. 1 is a schematic view of pulp formed on a forming die according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a wet pulp film being adsorbed onto a transfer mold according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of transferring a wet film of pulp onto a shaped lower mold and adding a tough material according to an embodiment of the present invention;

FIG. 4 is a schematic view of the accumulation of multiple layers on a wet film of pulp transferred to a shaped lower die according to an embodiment of the present invention;

FIG. 5 is a schematic view of a wet film of pulp pressed onto a sizing upper mold according to an embodiment of the present invention;

fig. 6 is a schematic view of the multi-layer composite bearing plate taken out from the upper shaping mold and the lower shaping mold according to the embodiment of the present invention.

In the drawings, the reference numbers indicate the following list of parts:

1-forming die, 2-transferring die, 3-paper pulp wet film, 4-shaping lower die, 5-shaping upper die, 6-toughness material and 7-multilayer composite paper pulp bearing plate.

Detailed Description

The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.

Example 1

A multi-layered composite pulp bearing plate molding die, as shown in fig. 1-6, comprising: the forming die comprises a forming die 1, a transfer die 2, a shaping lower die and a shaping upper die; the forming die 1 is provided with a bulge and a groove which are required by pulp forming, the bulge and the groove are arranged on the bottom plate, and the forming die 1 is used for quickly forming the pulp; the projections and the grooves of the forming die 1 are matched with the projections and the grooves of the transfer die 2, and the transfer die 2 can absorb the paper pulp wet film 3 formed on the forming die 1; the shaping lower die is consistent with the forming die 1 in structure and is used for accommodating the paper pulp wet film 3 on the transfer die 2; the structure of mould and transfer mould 2 is unanimous in the design, hold down the wet membrane 3 of multilayer paper pulp after the wet membrane 3 crimping of paper pulp to the design and go up the mould, and the mould holds the wet membrane 3 of multilayer paper pulp in the design, obtains the compound paper pulp bearing plate 7 of multilayer.

The invention has the beneficial effects that: the forming of the paper pulp wet film 3 is completed by the forming die 1, after the forming is completed, the paper pulp wet film 3 is transferred to the forming lower die by the transfer die 2, the paper pulp wet film 3 is transferred to the forming lower die, the forming of the paper pulp wet film 3 is completed on the forming die 1, the paper pulp wet film 3 on the forming die 1 can be transferred to the forming lower die by the transfer die 2, so that the multilayer paper pulp wet film 3 can be quickly formed, the multilayer paper pulp wet film 3 is pressed into the forming upper die after the requirement of the multilayer paper pulp wet film 3 is superposed in the lower forming die, the forming upper die and the forming lower die simultaneously apply pressure and are processed, and finally the multilayer paper pulp is taken down.

The specific implementation steps are as follows: a processing technology is applied to a multilayer composite paper pulp bearing plate molding mold and is characterized by comprising the following steps:

as shown in fig. 1: forming and vacuum dewatering paper pulp with specified concentration on a forming die 1 for a set time; the setting time may be set according to the requirements of the existing single-layer pulp.

As shown in fig. 2: moving and adsorbing the formed paper pulp wet film 3 to a transfer mould 2; when in use, the transfer mould 2 is used for absorbing the paper pulp wet film 3. Transferring the paper pulp wet film 3 on the transfer mould 2 to a shaping lower mould; the lower shaping die is a transfer position of the multilayer paper pulp wet film 3, and can reduce moisture before drying.

As shown in fig. 3: uniformly placing a preset toughness material 6 on the paper pulp wet film 3 on the shaping lower die; the toughness of the bearing plate can be enhanced.

As shown in fig. 4: in the first two steps, a plurality of layers of paper pulp wet films 3 are placed on the shaping lower die;

as shown in fig. 5: in order to realize a multi-layer composite pulp bearing plate 7. Pressing the multilayer paper pulp wet film 3 on the shaping lower die onto the shaping upper die 5; the method comprises the following steps of draining a part of liquid on the multilayer paper pulp, and pressing the drained part of liquid into a shaping upper die to ensure that the drying is quicker and more effective; the shaping upper die in the whole process is used for bearing and drying the multilayer paper pulp wet film 3.

As shown in fig. 6: and drying the multi-layer paper pulp wet film 3 on the shaping upper die and then taking down the multi-layer paper pulp wet film to complete the manufacture of the multi-layer composite paper pulp bearing plate 7.

In the embodiment, in order to ensure that the weight bearing capacity of each layer of pulp is good, the contour of the protrusion is consistent with that of the groove, and the protrusion and the groove are both provided with standard isosceles trapezoid shapes. In order to ensure that the shape structure of the edge part of the paper pulp wet film 3 is fixed, two side edges of the forming die 1 and the shaping lower die are provided with flange bulges, and the edge profiles of the flange bulges are matched with the grooves. In order to ensure the adaptability of the mold and avoid wasting the mold, the number of the grooves on the forming mold 1 is consistent with the number of the protrusions on the transfer mold 2, and the number of the protrusions on the forming mold 1 is consistent with the number of the grooves on the transfer mold 2. Quantitative waterproof and antiseptic agents are added into the pulp liquid, and the influence of a wet environment on the strength of the bearing plate is effectively avoided. The paper pulp wet film 3 is fragile, and the paper pulp wet film 3 which is just shaped can be damaged when a user cannot hold the paper pulp wet film or a tool; the wet pulp film 3 held in the transfer mold 2 is blown off by compressed air and then transferred to the sizing lower mold. And when the upper shaping mould and the lower shaping mould apply pressure together and the multilayer paper pulp wet film 3 is formed, a dryer is used for heating treatment. And drying the paper pulp wet film 3 to ensure the hardness and strength of the paper pulp, and conveniently taking down to prepare the bearing plate. When the wet paper pulp membrane 3 is taken down, the wet paper pulp membrane is collected by a collector and is matched with compressed air for use. The compressed air is used for ensuring the convenience of taking, in addition, the compressed air has larger energy, no special harmful performance and no fire danger, and particularly, the fire is dangerous for the dried paper pulp, so the compressed air is used.

The above-mentioned gathering machine uses the patent number as: a collector as described in patent document ZL 202220166252.1.

The multilayer composite paper pulp bearing plate 7 is different from the traditional paper pulp bearing plate: the multilayer composite paper pulp bearing plate 7 is composed of multilayer paper pulp molding materials, the number of layers of the product can be determined according to the weight requirement of the product, the tough materials 6 are added between the layers, the multilayer composite paper pulp bearing plate can be pre-supported according to the requirement, and the multilayer composite paper pulp bearing plate is welded into the paper pulp layers on two adjacent surfaces after high-temperature shaping, so that the thickness and the strength of the paper pulp molding bearing plate are greatly enhanced. The shape of the tough material 6 and the pulp molded shape are fitted to each other. The ductile material 6 comprises: plastic, metal mesh, high strength fibers, and the like.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (9)

1. A multilayer composite paper pulp bearing plate molding die is characterized by comprising:

the forming die comprises a forming die (1), a transfer die (2), a shaping lower die (4) and a shaping upper die (5); the forming die (1) comprises a bottom plate, wherein a bulge and a groove which are required by pulp forming are arranged on the bottom plate, and the forming die (1) is used for quickly forming the pulp;

the projections and the grooves of the forming die (1) are matched with the projections and the grooves of the transfer die (2), and the transfer die (2) can absorb the pulp wet film (3) formed on the forming die (1);

the shaping lower die (4) has the same structure as the forming die (1), and the shaping lower die (4) is used for containing the paper pulp wet film (3) on the transfer die (2);

the sizing upper die (5) is consistent with the structure of the transfer die (2), and the sizing lower die (4) holds the multilayer paper pulp wet film (3) and then presses the multilayer paper pulp wet film (3) onto the sizing upper die (5) to obtain the multilayer composite paper pulp bearing plate (7).

2. The molding die for bearing plate of multilayer composite pulp as claimed in claim 1, wherein the contour of the protrusion and the contour of the groove are identical and are all configured in a standard isosceles trapezoid shape.

3. The molding die for the multilayer composite pulp bearing plate as claimed in claim 1, wherein the forming die (1) and the shaping lower die (4) are provided with raised ribs at both sides, and the raised ribs and the adjacent raised ribs surround to form a groove.

4. The molding die for the bearing plate of multilayer composite pulp as claimed in claim 1, wherein the number of the grooves on the molding die (1) is the same as the number of the protrusions on the transfer die (2), and the number of the protrusions on the molding die (1) is the same as the number of the grooves on the transfer die (2).

5. A processing technology applied to the molding die of the multilayer composite paper pulp bearing plate of any one of claims 1 to 4, which is characterized by comprising the following steps:

s1: forming and vacuum dewatering pulp with specified concentration on a forming die (1) for a set time to obtain a pulp wet film (3);

s2: moving and adsorbing the paper pulp wet film (3) formed on the forming die (1) to a transfer die (2);

s3: transferring the paper pulp wet film (3) on the transfer mould (2) to a shaping lower mould (4);

s4: uniformly placing a preset tough material (6) on the paper pulp wet film (3) on the shaping lower die (4);

s5: repeating S1-S4, and placing a plurality of layers of paper pulp wet films (3) on the shaping lower die (4);

s6: pressing the multilayer paper pulp wet film (3) on the shaping lower die (4) to the shaping upper die (5);

s7: and drying and taking down the multi-layer paper pulp wet film (3) which is pressed by the shaping upper die (5) and the shaping lower die (4) together to obtain the multi-layer composite paper pulp bearing plate (7).

6. A process according to claim 5, wherein the pulp slurry of S1 is treated with a water and corrosion inhibitor.

7. A process according to claim 5, wherein S3 is carried out by blowing the wet film (3) of pulp contained in the transfer die (2) by means of compressed air onto the sizing lower die (4).

8. A process according to claim 5, wherein the S6 shaped upper mold (5) and the shaped lower mold (4) together hold the multilayer wet pulp film (3) and are heated by a dryer.

9. A process according to claim 5, wherein the wet pulp film (3) is collected by a collector when it is removed from the upper and lower shaping molds (5, 4) and is used in combination with compressed air.

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