Pulp molding mold and method for preparing the same

Abstract

The present invention relates to a pulp molding mold, and in particular to a pulp molding mold and a method for preparing the pulp molding mold, wherein the pulp molding mold comprises: a pulp shaping mold, the upper side surface of the pulp shaping mold is provided with a shaping cavity, the cavity surface of the shaping cavity is provided with at least one water-permeable and breathable groove; a water-permeable and breathable layer, comprising a plurality of balls, each of which is arranged closely and laid on the cavity surface of the shaping cavity, and presents a mesh structure, the end of each of the balls facing the cavity surface of the shaping cavity is embedded in the pulp shaping mold, and the center of each of the balls is spaced from the cavity surface of the shaping cavity; wherein the groove edge of the water-permeable and breathable groove can limit the balls from falling into the water-permeable and breathable groove. Based on the present invention, the water-permeable and breathable layer is used to replace the screen mold, which not only has the same technical effect as the screen mold, but also does not need to frequently replace the water-permeable and breathable layer, thereby reducing the use cost of the pulp molding mold.

Description

Technical Field

[0001] The invention relates to a pulp molding mold, and in particular to a pulp molding mold and a method for preparing the pulp molding mold. Background Art

[0002] The pulp molding mold includes a pulp shaping mold and a screen mold. The screen mold is laid on the shaping cavity surface of the pulp shaping mold to ensure the water permeability of the pulp molding mold. However, the screen mold is easily damaged, resulting in the need to frequently replace the new screen mold, wasting the screen mold and thus increasing the manufacturing cost of pulp molding. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a pulp molding mold, which aims to solve the problem of high use cost of the pulp molding mold.

[0004] The present invention is achieved in that:

[0005] The present invention provides a pulp molding mold, comprising:

[0006] A pulp shaping mold, wherein the upper side of the pulp shaping mold is provided with a shaping cavity, and the cavity surface of the shaping cavity is provided with at least one water-permeable and air-permeable groove;

[0007] The water-permeable and air-permeable layer includes a plurality of balls, each of which is closely arranged and laid on the cavity surface of the shaping cavity, and has a mesh structure, and the end of each of the balls facing the cavity surface of the shaping cavity is embedded in the pulp shaping mold, and the center of each of the balls is spaced from the cavity surface of the shaping cavity;

[0008] Wherein, the groove edge of the water-permeable and breathable groove can limit the ball from falling into the water-permeable and breathable groove.

[0009] Optionally, the pulp shaping mold is made of aluminum.

[0010] Optionally, the extension path of the water-permeable and air-permeable groove is linear and passes through the molding cavity, wherein the extension direction of the water-permeable and air-permeable groove is a first direction;

[0011] The molding cavity has a plurality of water-permeable and air-permeable grooves arranged at equal intervals in a second direction, wherein the first direction is perpendicular to the second direction.

[0012] Optionally, the ball is made of stainless steel.

[0013] Optionally, the ball is a hollow structure.

[0014] The present invention also provides a method for preparing a pulp molding mold, the preparation steps of which include:

[0015] A pulp shaping mold and a plurality of balls are prepared, wherein the pulp shaping mold is made of aluminum material, a shaping cavity is provided on the upper side of the pulp shaping mold, and at least one water-permeable and air-permeable groove is provided on the cavity surface of the shaping cavity, and the groove edge of the water-permeable and air-permeable groove can limit the balls from falling into the water-permeable and air-permeable groove;

[0016] The temperature of each of the balls is heated to a first preset temperature, and each of the balls is laid in the molding cavity, wherein the first preset temperature is higher than the melting point of the aluminum material, each of the balls is closely arranged and melted into the cavity surface of the molding cavity at a corresponding position, the center of each of the balls is spaced from the cavity surface of the molding cavity, and each of the balls together forms a water-permeable and air-permeable layer with a mesh structure on the cavity surface of the molding cavity;

[0017] The temperature of each of the balls is lowered to a second preset temperature, wherein the second preset temperature is lower than the melting point of the aluminum material.

[0018] Optionally, the temperature of each of the balls is first heated to a first preset temperature, and then each of the balls is sprayed into the molding cavity one by one through a spray gun.

[0019] Optionally, the first preset temperature is 690-730°C.

[0020] Optionally, the first preset temperature is 700°C.

[0021] Optionally, before heating the temperature of each of the balls to the first preset temperature, the pulp shaping mold is preheated to the third preset temperature, and the third preset temperature is lower than the melting point of the aluminum material.

[0022] In the present invention, firstly, based on the structural characteristics of the balls, there will be gaps between the balls, and there will also be gaps between the balls and the cavity surface of the shaping cavity, that is, the water-permeable and breathable layer will not affect the water-permeable and breathable effect at any position, that is, after the pulp is laid on the water-permeable and breathable layer, water seeping out or water vapor evaporated at any position can flow through the water-permeable and breathable layer to the water-permeable and breathable groove, and then be discharged through the water-permeable and breathable groove, thereby achieving the water-permeable and breathable effect of the screen mold, and secondly, the end of each ball facing the cavity surface of the shaping cavity is embedded in the pulp shaping mold, that is, each ball is fixed on the cavity surface of the shaping cavity, and based on the structural characteristics of the balls, during use, each ball is subjected to force separately, is not easy to be damaged, and does not need to frequently replace the water-permeable and breathable layer.

[0023] From the above, it can be seen that based on the structural design of the present invention, a water-permeable and breathable layer is used to replace the wire mesh mold, that is, the wire mesh mold is replaced by fixing a plurality of beads on the cavity surface of the molding cavity. In this way, the same technical effect as the wire mesh mold is achieved, and there is no need to frequently replace the water-permeable and breathable layer, thereby reducing the use cost of the pulp molding mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic structural diagram of a pulp shaping mold provided by an embodiment of the present invention;

[0026] Figure 2 The pulp shaping mold provided by the embodiment of the present invention is provided with balls, wherein the balls only cover part of the cavity surface of the shaping cavity, but not the entire cavity surface of the shaping cavity;

[0027] Figure 3 yes Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0028] Figure 4 yes Figure 2 Another perspective structural diagram of;

[0029] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure of B;

[0030] Figure 6 It is a schematic diagram of the positional relationship between the balls and the pulp shaping mold.

[0031] Description of Figure Numbers:

[0032] Label name Label name 100 Pulp shaping mold 101 Cavity 102 Water-permeable and breathable groove 200 Balls DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should also be noted that the directional terms such as left, right, up and down in the embodiments of the present invention are merely relative concepts or are based on the normal use status of the product and should not be considered as restrictive.

[0036] The embodiment of the present invention provides a pulp molding mold, comprising a pulp shaping mold 100 and a water-permeable and air-permeable layer.

[0037] Specifically, Figure 1 , Figure 2 and Figure 4 As shown, a pulp shaping mold 100 has a shaping cavity 101 formed on its upper side, and the shaping cavity 101 has at least one water-permeable and air-permeable groove 102 formed on its surface. Figure 1 , Figure 2 and Figure 4 The shaping cavity 101 shown is only a schematic diagram, and the structural shape of the shaping cavity 101 can be set according to the needs. The cavity surface of the shaping cavity 101 includes a cavity bottom and a cavity wall. In the present embodiment, the water-permeable and air-permeable groove 102 is preferably set through from top to bottom, that is, the water-permeable and air-permeable groove 102 presents the hole structure of the pulp shaping mold 100, which is convenient for production and manufacturing.

[0038] The water-permeable and air-permeable layer includes a plurality of beads 200, such as Figures 2 to 6 As shown, the balls 200 are closely arranged and laid on the cavity surface of the shaping cavity 101, and have a mesh structure. The end of each ball 200 facing the cavity surface of the shaping cavity 101 is embedded in the pulp shaping mold 100, and the center of each ball 200 is spaced from the cavity surface of the shaping cavity 101. Regarding the close arrangement of the balls 200, it should be noted that.

[0039] Among them, the groove edge of the water-permeable and breathable groove 102 can limit the ball 200 from falling into the water-permeable and breathable groove 102, that is, the groove width of the water-permeable and breathable groove 102 is smaller than the diameter of the ball 200; in the embodiment of the present invention, the groove width of the water-permeable and breathable groove 102 is 0.2mm, and the diameter of the ball 200 is 0.5mm.

[0040] In the present invention, firstly, based on the structural characteristics of the ball 200, such as Figure 3 , Figure 5 and Figure 6 As shown, there will be gaps between the beads 200, and there will also be gaps between the beads 200 and the cavity surface of the shaping cavity 101, that is, the water-permeable and breathable layer will not affect the water-permeable and breathable effect at any position, that is, after the pulp is laid on the water-permeable and breathable layer, water seeping out or water vapor evaporated at any position can flow through the water-permeable and breathable layer to the water-permeable and breathable groove 102, and then be discharged through the water-permeable and breathable groove 102, thereby achieving the water-permeable and breathable effect of the screen mold. Secondly, the end of each ball 200 facing the cavity surface of the shaping cavity 101 is embedded in the pulp shaping mold 100, that is, each ball 200 is fixed on the cavity surface of the shaping cavity 101, and based on the structural characteristics of the ball 200, during use, each ball 200 is subjected to force separately, is not easy to be damaged, and does not need to frequently replace the water-permeable and breathable layer.

[0041] From the above, it can be seen that based on the structural design of the present invention, a water-permeable and breathable layer is used to replace the screen mold, that is, the screen mold is replaced by fixing multiple balls 200 on the cavity surface of the molding cavity 101. In this way, the same technical effect as the screen mold is achieved, and there is no need to frequently replace the water-permeable and breathable layer, thereby reducing the use cost of the pulp molding mold.

[0042] In the embodiment of the present invention, the pulp shaping mold 100 is made of aluminum material, which is helpful to reduce the manufacturing difficulty of the pulp molding mold.

[0043] Specifically, a method for preparing a pulp molding mold may be provided, wherein the preparation steps include:

[0044] First, prepare a pulp shaping mold 100 and a plurality of balls 200, wherein the pulp shaping mold 100 is made of aluminum, a shaping cavity 101 is provided on the upper side of the pulp shaping mold 100, and at least one water-permeable and air-permeable groove 102 is provided on the cavity surface of the shaping cavity 101, and the groove edge of the water-permeable and air-permeable groove 102 can limit the balls 200 from falling into the water-permeable and air-permeable groove 102.

[0045] The ball 200 is made of a high temperature resistant material with good mechanical strength. Specifically, it can be stainless steel or an alloy material. In the embodiment of the present invention, the ball 200 is preferably made of stainless steel.

[0046] Second, the temperature of each ball 200 is heated to a first preset temperature, and each ball 200 is laid on the molding cavity 101, wherein the first preset temperature is higher than the melting point of the aluminum material, and each ball 200 is arranged closely and melted into the cavity surface of the molding cavity 101 at a corresponding position, and the center of each ball 200 is spaced apart from the cavity surface of the molding cavity 101, and each ball 200 together forms a water-permeable and breathable layer with a mesh structure on the cavity surface of the molding cavity 101.

[0047] This step includes two sub-steps, namely, heating the temperature of each ball 200 to a first preset temperature, and laying each ball 200 into the molding cavity 101. The order of these two sub-steps is interchanged. In the embodiment of the present invention, in order to reduce the difficulty of heating the ball 200, the temperature of each ball 200 is first heated to the first preset temperature, and then each ball 200 is laid into the molding cavity 101.

[0048] In this step, since the pulp shaping mold 100 is made of aluminum, and the melting point of aluminum is 660°C, and the temperature of each ball 200 is a first preset temperature, and the first preset temperature is higher than the melting point of aluminum, the position of the cavity surface of the shaping cavity 101 that contacts each ball 200 will melt due to the heat, so that each ball 200 melts into the cavity surface of the shaping cavity 101 at the corresponding position.

[0049] Among them, the first preset temperature is preferably 690-730°C. The depth of the cavity surface of the ball 200 melted into the molding cavity 101 is related to the amount of heat that the ball 200 can transfer to the molding mold. If the temperature of the ball 200 is too high, it is easy to cause the ball 200 to melt into the cavity surface of the molding cavity 101 too deeply, thereby affecting the water permeability and air permeability of the water-permeable and air-permeable layer; specifically, in this embodiment, the first preset temperature is 700°C.

[0050] Third, the temperature of each ball 200 is lowered to a second preset temperature, wherein the second preset temperature is lower than the melting point of the aluminum material.

[0051] The first preset temperature is preferably 690-730°C. Since less heat needs to be dissipated, air cooling can be used in this step without any additional cooling, which helps to reduce the difficulty of cooling.

[0052] Furthermore, in the embodiment of the present invention, the temperature of each ball 200 may be heated to a first preset temperature first, and then each ball 200 may be sprayed into the molding cavity 101 one by one through a spray gun.

[0053] Among them, after each ball 200 is heated to the first preset temperature, in order to lay each ball 200 on the cavity surface of the molding cavity 101, each ball 200 is usually placed in the molding cavity 101 together. At this time, each ball 200 is stacked in the molding cavity 101 in a pile, and then each ball 200 is laid on the cavity surface of the molding cavity 101 through a paving material (such as a stainless steel pipe, a plate, etc.). Among them, when each ball 200 is stacked in the molding cavity 101 in a pile, since the temperature of each ball 200 is at the first preset temperature, the ball 200 at the bottom will be under the weight of the ball 200 at the top. There will be a problem of too deep melting into the cavity surface of the molding cavity 101, that is, the depth of some balls 200 melting into the cavity surface of the molding cavity 101 is too deep, which affects both the precision of the pulp molding mold and the water permeability and air permeability of the pulp molding mold.

[0054] Based on this, in the process of spraying each ball 200 into the molding cavity 101 one by one by the spray gun, since each ball 200 is sprayed into the molding cavity 101 one by one by the spray gun, this means that each ball 200 enters the molding cavity 101 one by one and at a certain speed, so that the ball 200 will not be stacked, which also avoids the problem of some balls 200 melting too deeply into the cavity surface of the molding cavity 101.

[0055] Based on this, by increasing the spray frequency of the spray gun, it is possible to avoid the problem of some balls 200 melting too deeply into the cavity surface of the molding cavity 101, and shorten the time required for each ball 200 to be laid on the cavity surface of the molding cavity 101.

[0056] It should be noted here that Figure 2 The balls 200 shown are only a part of the balls 200, not all the balls 200 required for the pulp molding mold.

[0057] In the embodiment of the present invention, before heating the temperature of each ball 200 to the first preset temperature, the pulp shaping mold 100 may be preheated to a third preset temperature, where the third preset temperature is lower than the melting point of the aluminum material.

[0058] Based on this, in the process of making the cavity surface of the molding cavity 101 reach the melting point of the aluminum material, the heat that the ball 200 needs to transfer can be reduced, which is beneficial to ensure the efficiency and probability of the ball 200 melting into the cavity surface of the molding cavity 101.

[0059] In addition, in other embodiments, while the temperature of each ball 200 is heated to the first preset temperature, the pulp shaping mold 100 is also preheated to the third preset temperature.

[0060] Specifically, in the embodiment of the present invention, the third preset temperature is 550-600°C.

[0061] In the embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, the extension path of the water-permeable and air-permeable groove 102 is linear and passes through the molding cavity 101, wherein the extension direction of the water-permeable and air-permeable groove 102 is a first direction;

[0062] The molding cavity 101 has a plurality of water-permeable and air-permeable grooves 102 arranged at equal intervals in the second direction, wherein the first direction and the second direction are perpendicular to each other.

[0063] First of all, based on this structural design, the manufacturing difficulty of the shaping mold can be reduced. Specifically, as to how to reduce the manufacturing difficulty of the shaping mold, it should be noted that in the prior art, the water-permeable and air-permeable of the shaping mold is mainly achieved through circular water-permeable and air-permeable holes. The molding material is paper pulp, and it is used in conjunction with a wire mesh mold. In order to prevent the paper pulp from squeezing and deforming the wire mesh mold at the water-permeable and air-permeable holes, the aperture of the water-permeable and air-permeable holes cannot be too large. In order to ensure the water-permeable and air-permeable capacity of the shaping mold, more water-permeable and air-permeable holes need to be opened, which requires frequent drilling, which greatly increases the manufacturing difficulty of the shaping mold. The extension path of the water-permeable and air-permeable groove 102 is a straight line, so it can be processed and manufactured by wire cutting.

[0064] Secondly, based on this structural design, the distance from water seeping out of the pulp or evaporated water vapor at any position to the water-permeable and breathable groove 102 can be controlled, which is beneficial to ensuring the water-permeable and breathable effect of the shaping mold.

[0065] In other embodiments of the present invention, when the required molding object is too large, in order to avoid the pulp molding mold being too heavy, the ball 200 can be made into a hollow structure, which is helpful to reduce the weight of the pulp molding mold.

[0066] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulp molding mold, characterized in that: include: A pulp shaping mold, wherein the upper side of the pulp shaping mold is provided with a shaping cavity, and the cavity surface of the shaping cavity is provided with at least one water-permeable and air-permeable groove; The water-permeable and air-permeable layer includes a plurality of balls, each of which is closely arranged and laid on the cavity surface of the shaping cavity, and has a mesh structure, and the end of each of the balls facing the cavity surface of the shaping cavity is embedded in the pulp shaping mold, and the center of each of the balls is spaced from the cavity surface of the shaping cavity; Wherein, the groove edge of the water-permeable and breathable groove can limit the ball from falling into the water-permeable and breathable groove; The extension path of the water-permeable and air-permeable groove is linear and passes through the molding cavity, wherein the extension direction of the water-permeable and air-permeable groove is a first direction; The shaping cavity has a plurality of water-permeable and air-permeable grooves arranged at equal intervals in a second direction, wherein the first direction is perpendicular to the second direction; The ball is made of stainless steel; The ball is a hollow structure; The pulp shaping mold is a pulp shaping mold made of aluminum material.

2. A method for preparing a pulp molding mold, characterized in that: The preparation steps include: A pulp shaping mold and a plurality of balls are prepared, wherein the pulp shaping mold is made of aluminum material, a shaping cavity is provided on the upper side of the pulp shaping mold, and at least one water-permeable and air-permeable groove is provided on the cavity surface of the shaping cavity, and the groove edge of the water-permeable and air-permeable groove can limit the balls from falling into the water-permeable and air-permeable groove; The temperature of each of the balls is heated to a first preset temperature, and each of the balls is laid in the molding cavity, wherein the first preset temperature is higher than the melting point of the aluminum material, each of the balls is closely arranged and melted into the cavity surface of the molding cavity at a corresponding position, the center of each of the balls is spaced from the cavity surface of the molding cavity, and each of the balls together forms a water-permeable and air-permeable layer with a mesh structure on the cavity surface of the molding cavity; Lowering the temperature of each of the balls to a second preset temperature, wherein the second preset temperature is lower than the melting point of the aluminum material; Firstly, the temperature of each of the balls is heated to a first preset temperature, and then each of the balls is sprayed into the molding cavity one by one by a spray gun; The first preset temperature is 690-730°C.

3. The method for preparing a pulp molding mold according to claim 2, characterized in that: The first preset temperature is 700°C.

4. The method for preparing a pulp molding mold according to claim 2, characterized in that: Before heating the temperature of each of the balls to the first preset temperature, the pulp shaping mold is preheated to a third preset temperature, and the third preset temperature is lower than the melting point of the aluminum material.

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