Heat insulation and heat dissipation mold seat of paper-plastic forming machine

Abstract

The invention discloses a heat insulation and heat dissipation mold seat of a paper-plastic forming machine, which comprises a mold seat, a first heat insulation plate, a plurality of heat insulation layers, a second heat insulation plate, an air chamber cover plate, a heating air chamber plate, a third heat insulation plate and a heating plate which are sequentially connected from top to bottom, the plurality of heat insulation layers are uniformly arranged on the other end surface, far away from the mold seat, of the first heat insulation plate, and the air chamber cover plate is arranged on the second heat insulation plate. The heating air chamber plate, the third heat insulation plate and the upper heating plate are sequentially installed on the other end face, away from the heat insulation layer, of the second heat insulation plate, and when the device is used, the third heat insulation plate is arranged on the heating plate of a main heating component in the hot press forming step, and the second heat insulation plate, the heat insulation layer and the first heat insulation plate are arranged upwards in the direction of a machine frame of a forming machine. Therefore, the heat is effectively prevented from being transmitted to the machine frame of the forming machine, the thermal deformation of the machine frame is reduced, the precision of the machine frame is improved, and the yield of paper pulp molded products is improved.

Description

Technical Field

[0001] The invention relates to the field of paper plastic products, in particular to a heat-insulating and heat-dissipating mould seat of a paper plastic forming machine. Background Art

[0002] Pulp molded products are made of pulp as raw material and are molded into a certain shape by special molds on a molding machine. The production process includes a series of steps such as pulp crushing, grouting, hot pressing, trimming, selection, disinfection, and packaging.

[0003] Hot pressing is an important process step in the paper plastic product process. The paper plastic forming machine transfers the paper blank to the forming mold to complete the heat setting, and uses heat and pressure to shape the paper blank material.

[0004] However, as shown in the Chinese patent with application number CN202110016475.X, a heat-insulating seat is set in the lower mold cavity to isolate the heat from the upper mold from being transferred to the lower mold, thereby avoiding the problem of transferring the heat during hot pressing to the molding machine.

[0005] However, the above technical solution ignores the heat of the upper mold. As shown in the Chinese patent application number CN202220541261.4, electric heaters are provided in the upper and lower molds for heating in the hot pressing forming. Therefore, in actual production, the heat of the upper mold will still be transferred to the molding machine.

[0006] Therefore, when the electric heater heats the upper and lower molds, the heat of the molds is transferred to the molding machine frame. The molding machine frame is deformed by heat, which will cause the frame accuracy to decrease. The deformation makes the molding machine equipment unable to produce high-quality pulp molded products. Summary of the invention

[0007] In order to solve the deficiencies in the prior art, the present invention provides a heat-insulating and heat-dissipating mold seat for a paper-molding machine.

[0008] The technical solution of the present invention is:

[0009] The present invention provides a heat-insulating and heat-dissipating mold base for a paper-molding machine, comprising: a mold base, a first heat-insulating plate, a heat-insulating layer, a second heat-insulating plate, an air chamber cover plate, a heating air chamber plate, a third heat-insulating plate, and a heating plate, which are connected in sequence from top to bottom;

[0010] One end surface of the mold base is connected to the molding machine frame, and the other end surface is connected to the first heat insulation board.

[0011] A plurality of the heat insulation layers are evenly installed on the other end surface of the first heat insulation board away from the mold base, and the surface heights of the plurality of the heat insulation layers are aligned;

[0012] The upper and lower surfaces of the heat insulation layer are respectively a first fixing plate and a second fixing plate, support columns are evenly arranged between the first fixing plate and the second fixing plate, and a second heat insulation plate is respectively installed on one side of each second fixing plate away from the first heat insulation plate;

[0013] The air chamber cover plate, the heating air chamber plate, the third heat insulation plate and the upper heating plate are sequentially installed on the other end surface of the second heat insulation plate away from the heat insulation layer, and a heating pipe is passed through the interior of the heating plate.

[0014] Preferably, an air intake pipe is also arranged between the first fixed plate and the second fixed plate of the thermal insulation layer, and an air blowing pipe extends downward from the outer wall of the air intake pipe, and the air blowing pipe passes through the second thermal insulation plate, the air chamber cover plate, the heating air chamber plate, and the third thermal insulation plate to extend to one side end surface of the heating plate, and an air extraction cavity is formed in the heating air chamber plate, and an air extraction hole extending below the air extraction cavity passes through the third thermal insulation plate and extends to one side end surface of the heating plate, and the air extraction cavity is connected to the air extraction pipe arranged around the outside of the heating air chamber plate.

[0015] Preferably, the position inside the vacuum chamber that communicates with the external vacuum pipe is recessed to form a vacuum groove, and the edge of the vacuum groove is recessed and chamfered (to guide air flow, enhance air flow and accelerate vacuuming).

[0016] Preferably, the number of the thermal insulation layers is four, which are evenly distributed and fitted on the other end face of the first thermal insulation plate away from the mold base, and the number of the second thermal insulation plate, the air chamber cover plate, the heating air chamber plate, the third thermal insulation plate and the upper heating plate is the same as the number of the thermal insulation layers and corresponds one-to-one to the thermal insulation layers.

[0017] Preferably, the first fixing plate and the second fixing plate of the heat insulation layer are connected via a support column, and the area between the first fixing plate and the second fixing plate forms a hollow heat insulation layer.

[0018] Preferably, the first thermal insulation board, the second thermal insulation board and the third thermal insulation board are made of composite resin fiber material.

[0019] The beneficial effects achieved by the present invention are as follows: a third heat insulation board is arranged on the heating plate of the main heat-generating component in the hot pressing step, and a second heat insulation board, a heat insulation layer and a first heat insulation board are arranged upward toward the frame of the molding machine, so that the heat conducted to the mold seat is greatly reduced, thereby effectively isolating the heat from being transferred to the frame of the molding machine, reducing the thermal deformation of the frame, improving the frame accuracy, and improving the yield rate of pulp molded products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a bottom view schematic diagram of the overall structure of the present invention.

[0022] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention.

[0023] Figure 4 It is an exploded schematic diagram of the overall structure of the present invention.

[0024] Figure 5 It is an exploded schematic diagram of the overall structure of the present invention from another viewing angle.

[0025] Figure 6 It is a schematic diagram of the structure of the heating air chamber plate of the present invention.

[0026] In the accompanying drawings, 1. mold base; 2. first heat insulation board; 3. heat insulation layer; 301. first fixed plate; 302. second fixed plate; 303. support column; 4. second heat insulation board; 5. air chamber cover plate; 6. heating air chamber plate; 601. exhaust cavity; 602. exhaust groove; 603. exhaust hole; 7. third heat insulation board; 8. heating plate; 801. heating pipe; 9. air inlet pipe; 901. air blowing pipe; 10. exhaust pipe. DETAILED DESCRIPTION

[0027] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.

[0028] like Figures 1 to 5 As shown, the present invention provides a heat-insulating and heat-dissipating mold seat 1 for a paper-molding machine.

[0029] In this embodiment, the mold base 1, the first heat insulation board 2, the heat insulation layer 3, the second heat insulation board 4, the air chamber cover board 5, the heating air chamber board 6, the third heat insulation board 7, and the heating board 8 are connected in sequence from top to bottom;

[0030] One end surface of the mold base 1 is connected to the molding machine frame, and the other end surface is connected to the first heat insulation board 2.

[0031] The four heat insulation layers 3 are evenly distributed and fitted on the other end surface of the first heat insulation board 2 away from the mold base 1, and the surface heights of several heat insulation layers 3 are aligned;

[0032] The upper and lower surfaces of the thermal insulation layer 3 are respectively a first fixing plate 301 and a second fixing plate 302, support columns 303 are evenly arranged between the first fixing plate 301 and the second fixing plate 302, and a second thermal insulation plate 4 is respectively installed on one side of each second fixing plate 302 away from the first thermal insulation plate 2;

[0033] The number of the second heat insulation board 4, the air chamber cover board 5, the heating air chamber board 6, the third heat insulation board 7 and the upper heating board 8 is the same as the number of the heat insulation layer 3, and corresponds to the heat insulation layer 3 one by one. The air chamber cover board 5, the heating air chamber board 6, the third heat insulation board 7 and the upper heating board 8 are sequentially installed on the other end surface of the second heat insulation board 4 away from the heat insulation layer 3;

[0034] A heating tube 801 is provided inside the heating plate 8;

[0035] Furthermore, an air inlet pipe 9 is arranged between the first fixed plate 301 and the second fixed plate 302 of the heat insulation layer 3, and an air blowing pipe 901 extends downward from the outer wall of the air inlet pipe 9. The air blowing pipe 901 passes through the second heat insulation plate 4, the air chamber cover plate 5, the heating air chamber plate 6, and the third heat insulation plate 7 and extends to one side end surface of the heating plate 8. After the wet paper blank is hot-pressed and formed, air blowing can be used to assist the product in demolding.

[0036] An air extraction cavity 601 is formed in the heating air chamber plate 6, and an air extraction hole 603 extending below the air extraction cavity 601 passes through the third heat insulation plate 7 and extends to one side end surface of the heating plate 8. The air extraction cavity 601 is connected with an air extraction pipe 10 wound around the outside of the heating air chamber plate 6. When the wet paper embryo is hot-pressed, the air extraction hole 603 extracts water and moisture from the wet paper embryo, thereby reducing the moisture content of the wet paper embryo and accelerating the hot-pressing speed.

[0037] Furthermore, the position where the inside of the vacuum chamber 601 is connected to the external vacuum pipe 10 is recessed to form a vacuum groove 602, and the edge of the vacuum groove 602 is recessed and chamfered. The chamfer of the edge of the vacuum groove 602 can play a guiding role, guiding the airflow to be extracted from the vacuum groove 602 by the vacuum pipe 10, thereby enhancing the fluidity of the airflow and achieving the effect of accelerating vacuuming.

[0038] Furthermore, the first fixed plate 301 and the second fixed plate 302 of the insulation layer 3 are connected by a support column 303, and the area between the first fixed plate 301 and the second fixed plate 302 forms a hollow insulation layer 3. The hollow insulation layer 3 is provided, and air is a poor conductor of heat, so the heat of the mold can be effectively isolated from being transferred to the molding machine frame through the mold base 1.

[0039] Furthermore, the first insulation board 2, the second insulation board 4 and the third insulation board 7 are made of composite resin fiber material, which has low thermal conductivity and good deformation resistance and compression resistance.

[0040] Furthermore, the mold insulation structure of the present invention can be used for the upper mold or the lower mold of a pulp molding hot pressing mold.

[0041] When the present embodiment is used, a third heat insulation board 7 is arranged on the heating board 8 of the main heat generating component in the hot pressing step, and a second heat insulation board 4, a heat insulation layer 3 and a first heat insulation board 2 are arranged upwards toward the frame of the molding machine, so that the heat conducted to the mold base 1 is greatly reduced, thereby effectively isolating the heat from being transferred to the frame of the molding machine, reducing the thermal deformation of the frame, improving the frame accuracy, and improving the yield rate of pulp molding products;

[0042] The two surfaces of the air chamber cover plate 5 and the heating air chamber plate 6 after being combined are insulated by the second insulation plate 4 and the third insulation plate 7 respectively, which can reduce the gas temperature in the exhaust cavity 601, reduce the temperature of the wet paper embryo water vapor gas being extracted, reduce the heat taken away, that is, reduce the heat loss, and effectively maintain the mold temperature;

[0043] The heating plate 8, the third heat insulation plate 7, the heating air chamber plate 6, the air chamber cover plate 5, the second heat insulation plate 4 and the heat insulation layer 3 are divided into four pieces, leaving expansion gaps to reduce the influence of mold thermal expansion on mold accuracy.

[0044] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. The heat-insulating and heat-dissipating mold seat of the paper-plastic molding machine is characterized in that: include: The mold base, the first heat insulation board, the heat insulation layer, the second heat insulation board, the air chamber cover board, the heating air chamber board, the third heat insulation board, and the heating board are connected in sequence from top to bottom; One end surface of the mold base is connected to the molding machine frame, and the other end surface is connected to the first insulation board. A plurality of insulation layers are evenly installed on the other end surface of the first insulation board away from the mold base, and the surface heights of the plurality of insulation layers are aligned. The upper and lower surfaces of the heat insulation layer are respectively a first fixing plate and a second fixing plate, support columns are evenly arranged between the first fixing plate and the second fixing plate, and a second heat insulation plate is respectively installed on one side of each second fixing plate away from the first heat insulation plate; The air chamber cover plate, the heating air chamber plate, the third heat insulation plate and the upper heating plate are sequentially installed on the other end surface of the second heat insulation plate away from the heat insulation layer, and a heating pipe is passed through the interior of the heating plate.

2. The heat-insulating and heat-dissipating mold seat of the paper-molding machine according to claim 1, characterized in that: An air intake pipe is also arranged between the first fixed plate and the second fixed plate of the thermal insulation layer, and an air blowing pipe extends downward from the outer wall of the air intake pipe, and the air blowing pipe passes through the second thermal insulation plate, the air chamber cover plate, the heating air chamber plate, and the third thermal insulation plate to extend to one side end surface of the heating plate; an air extraction cavity is formed in the heating air chamber plate, and an air extraction hole extending below the air extraction cavity passes through the third thermal insulation plate to extend to one side end surface of the heating plate, and the air extraction cavity is connected to the air extraction pipe arranged around the outside of the heating air chamber plate.

3. The heat-insulating and heat-dissipating mold seat of the paper-molding machine according to claim 2, characterized in that: The position where the inside of the air extraction cavity communicates with the external air extraction pipe is recessed to form an air extraction groove, and the edge of the air extraction groove is recessed and chamfered.

4. The heat-insulating and heat-dissipating mold seat of the paper-molding machine according to claim 1 or 2, characterized in that: The number of the thermal insulation layers is four, which are evenly distributed and fitted on the other end face of the first thermal insulation board away from the mold base. The number of the second thermal insulation board, the air chamber cover plate, the heating air chamber plate, the third thermal insulation board and the upper heating plate is the same as the number of the thermal insulation layers and corresponds one-to-one to the thermal insulation layers.

5. The heat-insulating and heat-dissipating mold seat of the paper-molding machine according to claim 1, characterized in that: The first fixing plate and the second fixing plate of the heat insulation layer are connected via a support column, and the area between the first fixing plate and the second fixing plate forms a hollow heat insulation layer.

6. The heat-insulating and heat-dissipating mold seat of the paper-molding machine according to claim 1, characterized in that: The first heat insulation board, the second heat insulation board and the third heat insulation board are made of composite resin fiber material.

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