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

Abstract

The utility model 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 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] This utility model relates to the field of paper-plastic products, specifically to a heat-insulating and heat-dissipating mold base for a paper-plastic molding machine. Background Technology

[0002] Pulp molding products are paper products made from pulp as raw material and shaped into a certain shape by special molds on a molding machine. The production process includes a series of steps such as pulping, injection, hot pressing, trimming, sorting, sterilization, and packaging.

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

[0004] However, as shown in Chinese Patent Application No. CN202110016475.X, a heat insulation seat is set in the cavity of the lower mold to isolate the heat from the upper mold to the lower mold, thereby avoiding the problem of heat being transferred to the molding machine during hot pressing.

[0005] However, the above technical solutions neglect the heat of the upper mold. As shown in Chinese patent application number CN202220541261.4, electric heaters are installed in both the upper and lower molds in hot pressing to heat them. 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 from the mold is transferred to the molding machine frame. The deformation of the molding machine frame due to heat will reduce the frame's precision. The amount of deformation will prevent the molding machine from producing high-quality pulp molding products. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a heat-insulating and heat-dissipating mold base for a paper-plastic molding machine.

[0008] The technical solution of this utility model is as follows:

[0009] This utility model provides a heat-insulating and heat-dissipating mold base for a paper-plastic molding machine, comprising: a mold base, a first heat insulation plate, a heat insulation layer, a second heat insulation plate, an air chamber cover plate, a heating air chamber plate, a third heat insulation plate, and a heating plate, connected sequentially from top to bottom;

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

[0011] Several heat insulation layers are evenly distributed and installed on the other end face of the first heat insulation plate away from the mold base, and the surfaces of the several heat insulation layers are aligned at the same height;

[0012] The upper and lower sides of the heat insulation layer are respectively a first fixing plate and a second fixing plate. Support columns are evenly distributed between the first fixing plate and the second fixing plate. The second heat insulation plate is installed on the side of each second fixing plate away from the first heat insulation plate.

[0013] The air chamber cover, heating air chamber plate, third heat insulation plate, and upper heating plate are sequentially installed on the opposite end face of the second heat insulation plate away from the heat insulation layer, and a heating tube is inserted inside the heating plate.

[0014] Preferably, an air inlet pipe is arranged between the first and second fixing plates of the heat insulation layer. An air blowing pipe extends downward from the outer wall of the air inlet pipe. The air blowing pipe passes through the second heat insulation plate, the air chamber cover plate, the heating air chamber plate, and the third heat insulation plate, extending to one side end face of the heating plate. An air extraction chamber is formed inside the heating air chamber plate, and an air extraction hole extending below the air extraction chamber passes through the third heat insulation plate and extends to one side end face of the heating plate. The air extraction chamber is connected to an air extraction pipe that is arranged around the outside of the heating air chamber plate.

[0015] Preferably, the position where the air extraction chamber connects to 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 (to guide the flow, enhance the airflow, and accelerate the vacuuming process).

[0016] Preferably, the number of heat insulation layers is four, which are evenly distributed and attached to the other end face of the first heat insulation plate away from the mold base. The number of the second heat insulation plate, the air chamber cover plate, the heating air chamber plate, the third heat insulation plate and the upper heating plate is the same as the number of heat insulation layers, and they correspond one-to-one with the heat insulation layers.

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

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

[0019] The beneficial effects achieved by this utility model are as follows: a third heat insulation plate is provided on the heating plate of the main heat-generating component in the hot pressing molding step, and a second heat insulation plate, a heat insulation layer and a first heat insulation plate are respectively provided upward towards the molding machine frame, which greatly reduces the heat conducted to the mold seat. Therefore, the heat is effectively isolated from the heat transfer to the molding machine frame, reducing the thermal deformation of the frame, improving the frame accuracy and increasing the yield of pulp molded products. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a bottom view of the overall structure of this utility model.

[0022] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model.

[0023] Figure 4 This is an exploded view of the overall structure of this utility model.

[0024] Figure 5 This is an exploded view of the overall structure of this utility model from another perspective.

[0025] Figure 6 This is a schematic diagram of the heating chamber plate structure of this utility model.

[0026] In the attached diagram, 1 is the mold base; 2 is the first heat insulation plate; 3 is the heat insulation layer; 301 is the first fixing plate; 302 is the second fixing plate; 303 is the support column; 4 is the second heat insulation plate; 5 is the air chamber cover plate; 6 is the heating air chamber plate; 601 is the air extraction chamber; 602 is the air extraction groove; 603 is the air extraction hole; 7 is the third heat insulation plate; 8 is the heating plate; 801 is the heating pipe; 9 is the air inlet pipe; 901 is the air blowing pipe; and 10 is the air extraction pipe. Detailed Implementation

[0027] To facilitate understanding of this utility model by those skilled in the art, the specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0028] like Figures 1-5 As shown, this utility model provides a heat-insulating and heat-dissipating mold base 1 for a paper-plastic molding machine.

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

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

[0031] The four heat insulation layers 3 are evenly distributed and attached to the other end face of the first heat insulation plate 2 away from the mold base 1, and the surfaces of the heat insulation layers 3 are aligned at the same height.

[0032] The upper and lower sides of the heat insulation layer 3 are respectively a first fixing plate 301 and a second fixing plate 302. Support columns 303 are evenly distributed between the first fixing plate 301 and the second fixing plate 302. A second heat insulation plate 4 is installed on the side of each second fixing plate 302 that is away from the first heat insulation plate 2.

[0033] The number of the second heat insulation plate 4, the air chamber cover plate 5, the heating air chamber plate 6, the third heat insulation plate 7 and the upper heating plate 8 is the same as the number of heat insulation layers 3, and they correspond one-to-one with the heat insulation layers 3. The air chamber cover plate 5, the heating air chamber plate 6, the third heat insulation plate 7 and the upper heating plate 8 are installed sequentially on the other end face of the second heat insulation plate 4 that is away from the heat insulation layer 3.

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

[0035] Furthermore, an air inlet pipe 9 is arranged between the first fixing plate 301 and the second fixing plate 302 of the heat insulation layer 3. 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 face of the heating plate 8. After the wet paper blank is hot-pressed and formed, air blowing can assist the product demolding.

[0036] An air extraction chamber 601 is formed inside the heating chamber plate 6, and an air extraction hole 603 extending below the air extraction chamber 601 extends through the third heat insulation plate 7 to one side end face of the heating plate 8. The air extraction chamber 601 is connected to the air extraction pipe 10 surrounding the outside of the heating chamber plate 6. During the hot pressing of the wet paper blank, the air extraction hole 603 extracts water and moisture from the wet paper blank, reduces the moisture content of the wet paper blank, and speeds up the hot pressing process.

[0037] Furthermore, the space inside the suction chamber 601 that connects to the external suction pipe 10 is recessed to form a suction groove 602. The edges of the suction groove 602 are recessed and chamfered. The chamfer on the edge of the suction groove 602 can guide the airflow and guide the airflow from the suction groove 602 to be drawn by the suction pipe 10, which can enhance the airflow and achieve the effect of accelerating vacuuming.

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

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

[0040] Furthermore, the mold insulation structure of this utility model can be used as the upper or lower mold of a pulp molding hot pressing mold.

[0041] In this embodiment, a third heat insulation plate 7 is provided on the heating plate 8, the main heat-generating component in the hot pressing molding step, and a second heat insulation plate 4, a heat insulation layer 3, and a first heat insulation plate 2 are respectively provided upwards towards the molding machine frame. This greatly reduces the heat conducted to the mold base 1, thus effectively isolating the heat from being transferred to the molding machine frame, reducing the thermal deformation of the frame, improving the frame accuracy, and increasing the yield of pulp molded products.

[0042] After the air chamber cover plate 5 and the heating air chamber plate 6 are combined, their two sides are insulated by the second heat insulation plate 4 and the third heat insulation plate 7 respectively, which can reduce the temperature of the gas in the air extraction chamber 601, reduce the temperature of the water vapor gas of the wet paper blank that is extracted, reduce the heat carried away, that is, reduce 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 4 pieces, with expansion gaps to reduce the impact of mold thermal expansion on mold precision.

[0044] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A heat-insulating and heat-dissipating mold base for a paper-plastic molding machine, characterized in that, include: The mold base, first heat insulation plate, heat insulation layer, second heat insulation plate, air chamber cover plate, heating air chamber plate, third heat insulation plate, and heating plate are connected sequentially from top to bottom. One end face of the mold base is connected to the frame of the molding machine, and the other end face is connected to the first heat insulation plate. Several heat insulation layers are evenly distributed and installed on the other end face of the first heat insulation plate away from the mold base, and the surfaces of the several heat insulation layers are aligned at the same height. The upper and lower sides of the heat insulation layer are respectively a first fixing plate and a second fixing plate. Support columns are evenly distributed between the first fixing plate and the second fixing plate. The second heat insulation plate is installed on the side of each second fixing plate away from the first heat insulation plate. The air chamber cover, heating air chamber plate, third heat insulation plate, and upper heating plate are sequentially installed on the opposite end face of the second heat insulation plate away from the heat insulation layer, and a heating tube is inserted inside the heating plate.

2. The heat insulation and heat dissipation mold base of the paper-plastic molding machine according to claim 1, characterized in that, An air inlet pipe is arranged between the first and second fixing plates of the heat insulation layer. An air blowing pipe extends downward from the outer wall of the air inlet pipe. The air blowing pipe passes through the second heat insulation plate, the air chamber cover plate, the heating air chamber plate, and the third heat insulation plate, extending to one side end face of the heating plate. An air extraction chamber is formed inside the heating air chamber plate, and an air extraction hole extending below the air extraction chamber passes through the third heat insulation plate and extends to one side end face of the heating plate. The air extraction chamber is connected to an air extraction pipe that is wrapped around the outside of the heating air chamber plate.

3. The heat insulation and heat dissipation mold base of the paper-plastic molding machine according to claim 2, characterized in that, The air extraction chamber is recessed at the location where it connects to the external air extraction pipe, forming an air extraction groove. The edges of the air extraction groove are recessed and chamfered.

4. The heat insulation and heat dissipation mold base of the paper-plastic molding machine according to claim 1 or 2, characterized in that, The number of heat insulation layers is four, which are evenly distributed and attached to the other end face of the first heat insulation plate away from the mold base. The number of the second heat insulation plate, the air chamber cover plate, the heating air chamber plate, the third heat insulation plate and the upper heating plate is the same as the number of heat insulation layers, and they correspond one-to-one with the heat insulation layers.

5. The heat insulation and heat dissipation mold base of the paper-plastic molding machine according to claim 1, characterized in that, The first and second fixing plates of the insulation layer are connected by support columns, and the area between the first and second fixing plates forms a hollow insulation layer.

6. The heat insulation and heat dissipation mold base of the paper-plastic molding machine according to claim 1, characterized in that, The first, second, and third heat insulation boards are made of composite resin fiber material.

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