Mold for foaming vehicle seat

Abstract

The utility model discloses a mould for foaming a vehicle seat, which comprises an upper mould and a lower mould, an upper ventilation column is fixedly arranged on the upper mould, a lower ventilation column opposite to the upper ventilation column is fixedly arranged on the lower mould, a part of the upper ventilation column and / or a part of the lower ventilation column are arranged to be elastic pieces, and the upper mould can move relative to the lower mould. The lower end face of the upper ventilation column abuts against the upper end face of the lower ventilation column. Therefore, when the lower end face of the upper ventilation column abuts against the upper end face of the lower ventilation column, the elastic piece can provide extra elastic force in the height direction of the upper ventilation column and / or the lower ventilation column, and therefore the foaming material between the lower end face of the upper ventilation column and the upper end face of the lower ventilation column can be extruded out as much as possible. And when the foamed product is taken out of the mold, no foam film exists in the ventilation hole or the thickness of the foam film can be ignored, later repair by reworking personnel is not needed, the workload of the reworking personnel is reduced, and the production and manufacturing efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold processing, in particular to a mold used for foaming vehicle seats. Background Art

[0002] With the rapid development of the automobile industry, consumers have higher and higher requirements for car driving comfort. In order to improve the user's driving experience, many car seats are equipped with ventilation functions.

[0003] The ventilation function of the seat mainly relies on an independent ventilation system to blow air through the ventilation holes inside the seat to the passenger's back and buttocks, which can quickly cool the seat while ensuring the passenger's back and buttocks are dry, making the passenger feel comfortable even when sitting for a long time.

[0004] The ventilation holes inside the seat run through the thickness of the foamed product. In the current manufacturing process, the foamed product and the ventilation holes on it are integrally foamed in the mold. In order to form the ventilation holes, ventilation columns facing each other are provided in the upper and lower molds. The foaming production process is as follows: First, the foaming material is poured into the mold cavity, and then the upper mold is closed downward. During the closing process, the upper ventilation column on the lower side of the upper mold is required to rest against the upper end of the lower ventilation column of the lower mold. Because the foaming material is poured into the cavity first and then the mold is closed, there will be a thin layer of foam between the upper ventilation column and the lower ventilation column, which will result in a layer of foam film in the middle of the ventilation hole after the foamed product is taken out of the mold. In order to ensure the functionality of the ventilation hole, the film needs to be cleaned off. This work increases the workload of the rework personnel and greatly reduces the production efficiency. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a mold for vehicle seat foaming, by arranging an elastic member on a portion of an upper ventilation column and / or a portion of a lower ventilation column, when the lower end face of the upper ventilation column and the upper end face of the lower ventilation column abut against each other, the elastic member can provide additional elastic force in the height direction of the upper ventilation column and / or the lower ventilation column, so that the foaming material between the lower end face of the upper ventilation column and the upper end face of the lower ventilation column can be squeezed out as much as possible, that is, the foaming material between the contact surface of the upper ventilation column and the lower ventilation column can be removed as much as possible, so that when the foamed product is taken out of the mold, there is no foam film in the ventilation hole or the thickness of the foam film is negligible, and there is no need for repair personnel to repair it later, which reduces the workload of the repair personnel and is conducive to improving production efficiency.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model proposes a mold for vehicle seat foaming, including: an upper mold and a lower mold, the upper mold is fixedly provided with an upper ventilation column, the lower mold is fixedly provided with a lower ventilation column directly opposite to the upper ventilation column, part of the upper ventilation column and / or part of the lower ventilation column are arranged as elastic parts, and the upper mold is movable relative to the lower mold so that the lower end surface of the upper ventilation column and the upper end surface of the lower ventilation column abut against each other.

[0007] According to the mold for vehicle seat foaming according to the embodiment of the utility model, an elastic member is arranged on part of the upper ventilation column and / or part of the lower ventilation column. When the lower end face of the upper ventilation column and the upper end face of the lower ventilation column abut against each other, the elastic member can provide additional elastic force in the height direction of the upper ventilation column and / or the lower ventilation column, so that the foaming material between the lower end face of the upper ventilation column and the upper end face of the lower ventilation column can be squeezed out as much as possible, that is, the foaming material between the contact surface of the upper ventilation column and the lower ventilation column can be removed as much as possible. In this way, when the foamed product is taken out of the mold, there is no foam film in the ventilation hole or the thickness of the foam film is negligible, and there is no need for repair personnel to repair it later, which reduces the workload of the repair personnel and is conducive to improving production efficiency.

[0008] According to an embodiment of the utility model, the lower end of the upper ventilation column is arranged as a first elastic member, and the lower end surface of the first elastic member abuts against the upper end surface of the lower ventilation column.

[0009] According to an embodiment of the utility model, the lower end surface of the first elastic member and the upper end surface of the lower ventilation column are configured to be interference fit.

[0010] According to an embodiment of the utility model, the upper end of the lower ventilation column is arranged as a second elastic member, and the lower end surface of the upper ventilation column and the upper end surface of the second elastic member abut against each other.

[0011] According to an embodiment of the utility model, the lower end surface of the upper ventilation column and the upper end surface of the second elastic member are configured to be interference fit.

[0012] According to an embodiment of the present invention, the elastic member is configured as a rubber member or a silicone member.

[0013] According to an embodiment of the utility model, it is characterized in that there are multiple upper ventilation columns and multiple lower ventilation columns, and the multiple upper ventilation columns correspond one to one to the multiple lower ventilation columns.

[0014] According to an embodiment of the present invention, the elastic member is configured as a detachable member.

[0015] According to one embodiment of the utility model, the length of the upper ventilation column and the lower ventilation column is D, which satisfies the relationship: 30mm≤D≤60mm.

[0016] According to an embodiment of the present invention, the length of the elastic member is d, which satisfies the relationship: 5mm≤d≤10mm.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a mold according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of an upper ventilation column and a lower ventilation column according to a first embodiment of the utility model;

[0020] Figure 3 A schematic diagram of an upper ventilation column and a lower ventilation column according to a second embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of an upper ventilation column and a lower ventilation column according to a third embodiment of the utility model.

[0022] Reference numerals:

[0023] Mould 100;

[0024] Upper mold 1; upper ventilation column 11; first elastic member 111;

[0025] Lower mold 2; lower ventilation column 21; second elastic member 211. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The mold 100 for foaming a vehicle seat provided in an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0028] like Figure 1-Figure 4As shown, according to an embodiment of the utility model, a mold 100 for foaming a vehicle seat includes: an upper mold 1 and a lower mold 2, the upper mold 1 is fixedly provided with an upper ventilation column 11, and the lower mold 2 is fixedly provided with a lower ventilation column 21 which is directly opposite to the upper ventilation column 11. It should be noted that the lower ventilation column 21 is arranged in the cavity of the lower mold 2, and part of the upper ventilation column 11 and / or part of the lower ventilation column 21 are arranged as elastic parts. It can be understood that the elastic parts will generate corresponding elastic forces when compressed by external forces, and when the upper mold 1 moves relative to the lower mold 2, the lower end surface of the upper ventilation column 11 can be made to abut against the upper end surface of the lower ventilation column 21.

[0029] It should be noted that with the rapid development of the automobile industry, consumers have higher and higher requirements for car driving comfort. In order to improve the user's driving experience, many car seats are equipped with ventilation functions.

[0030] The ventilation function of the seat mainly relies on an independent ventilation system to blow air through the ventilation holes inside the seat to the passenger's back and buttocks, which can quickly cool the seat while ensuring the passenger's back and buttocks are dry, making the passenger feel comfortable even when sitting for a long time.

[0031] The ventilation holes inside the seat run through the thickness direction of the foamed product. In the current manufacturing process, the foamed product and the ventilation holes thereon are integrally foamed and molded in the mold 100. In order to mold the ventilation holes, ventilation columns facing each other are provided in the upper mold 1 and the lower mold 2. The foaming production process is as follows: first, the foaming material is poured into the mold cavity of the mold 100, and then the upper mold 1 is closed downward. During the closing process, the upper ventilation column 11 on the lower side of the upper mold 1 is required to rest against the upper end of the lower ventilation column 21 of the lower mold 2. Because the foaming material is poured into the cavity first and then the mold is closed, there will be a thin layer of foam between the upper ventilation column 11 and the lower ventilation column 21, which will result in a layer of foam film in the middle of the ventilation hole after the foamed product is taken out of the mold 100. In order to ensure the functionality of the ventilation hole, the film needs to be cleaned. This work increases the workload of the rework personnel and greatly reduces the production efficiency.

[0032] Based on this, the present application proposes a mold 100 for foaming vehicle seats, wherein part of the upper ventilation column 11 and / or part of the lower ventilation column 21 of the mold 100 are set as elastic parts, that is, part of the material of the upper ventilation column 11 can be set as elastic material, so that part of the upper ventilation column 11 is constructed as an elastic part. It can be understood that at this time, the lower ventilation column 21 may not be provided with an elastic part; part of the material of the lower ventilation column 21 can also be set as elastic material, so that part of the lower ventilation column 21 is constructed as an elastic part. It can be understood that at this time, the upper ventilation column 11 may not be provided with an elastic part; part of the material of the upper ventilation column 11 and part of the material of the lower ventilation column 21 can also be set as elastic material, so that part of the upper ventilation column 11 and part of the lower ventilation column 21 are constructed as elastic parts. The specific setting is based on actual production needs and is not specifically limited here.

[0033] Further, as a specific example, the case where part of the upper ventilation column 11 is constructed as an elastic part and the lower ventilation column 21 is not provided with an elastic part is taken as an example for explanation, wherein the elastic part of the upper ventilation column 11 can be set at any position of the upper ventilation column 11, for example, the elastic part of the upper ventilation column 11 can be set at the upper end, middle part or lower end of the upper ventilation column 11 body, and the number of elastic parts can also be set according to actual needs. It can be understood that the non-elastic material part of the upper ventilation column 11 can be constructed as a commonly used rigid material, including but not limited to stainless steel, aluminum alloy, etc., so that the upper ventilation column 11 can be constructed as a columnar structure composed of multiple sections of elastic parts and multiple sections of non-elastic parts. For example, the upper ventilation column 11 can be constructed by a first section of non-elastic parts, a second section of elastic parts, and a third section of non-elastic parts, or it can be constructed by a first section of non-elastic parts, a second section of elastic parts, a third section of non-elastic parts, a fourth section of elastic parts, and a fifth section of non-elastic parts, while the lower ventilation column 21 can be constructed as a columnar structure completely composed of non-elastic materials. During the production process of foamed products, foaming material is poured into the cavity of the lower mold 2. Generally speaking, the height of the foaming material will be higher than the height of the lower ventilation column 21. Then the upper mold 1 is driven downward to close the mold. During the closing process, the lower surface of the upper ventilation column 11 is required to rest against the upper end surface of the lower ventilation column 21. Corresponding ventilation holes can be formed by the matching assembly of the upper ventilation column 11 and the lower ventilation column 21. In the process of mutual extrusion between the upper ventilation column 11 and the lower ventilation column 21, the elastic part of the upper ventilation column 11 will generate an elastic force toward the lower ventilation column 21 along the height direction of the upper ventilation column 11, so that the foaming material between the lower end surface of the upper ventilation column 11 and the upper end surface of the lower ventilation column 21 can be squeezed out as much as possible, that is, the foaming material between the contact surface of the upper ventilation column 11 and the lower ventilation column 21 can be removed as much as possible. In this way, when the foamed product is taken out of the mold 100, there is no foam film in the ventilation hole or the thickness of the foam film is negligible.

[0034] Further, as another specific example, a part of the upper ventilation column 11 is constructed as an elastic part and a part of the upper ventilation column 11 is constructed as an elastic part. The elastic part of the upper ventilation column 11 can be set at any position of the upper ventilation column 11, and the elastic part of the lower ventilation column 21 can be set at any position of the lower ventilation column 21. The number of elastic parts can also be set according to actual needs. In this way, the upper ventilation column 11 can be constructed as a columnar structure composed of elastic parts and non-elastic parts, and the lower ventilation column 21 can also be constructed as a columnar structure composed of elastic parts and non-elastic parts, which will not be repeated here. During the mold closing process of foam product production, the lower surface of the upper ventilation column 11 is against the upper end surface of the lower ventilation column 21. During the mutual squeezing process of the upper ventilation column 11 and the lower ventilation column 21, the elastic parts of the upper ventilation column 11 and the elastic parts of the lower ventilation column 21 will generate relative elastic forces, so as to better extrude the foaming material between the lower end surface of the upper ventilation column 11 and the upper end surface of the lower ventilation column 21. In this way, when the foam product is taken out of the mold 100, there is no foam film in the ventilation hole or the thickness of the foam film is negligible.

[0035] It should be noted that part of the material of the lower ventilation column 21 can also be set as elastic material, while the upper ventilation column 11 is not provided with elastic parts. Please refer to the above for details, and no detailed explanation will be given here.

[0036] According to the mold 100 for vehicle seat foaming according to the embodiment of the utility model, an elastic member is arranged on a portion of the upper ventilation column 11 and / or a portion of the lower ventilation column 21. When the lower end surface of the upper ventilation column 11 and the upper end surface of the lower ventilation column 21 abut against each other, the elastic member can provide additional elastic force in the height direction of the upper ventilation column 11 and / or the lower ventilation column 21, so that the foaming material between the lower end surface of the upper ventilation column 11 and the upper end surface of the lower ventilation column 21 can be squeezed out as much as possible, that is, the foaming material between the contact surface of the upper ventilation column 11 and the lower ventilation column 21 can be removed as much as possible. In this way, when the foamed product is taken out of the mold 100, there is no foam film in the ventilation hole or the thickness of the foam film is negligible, and there is no need for later repair personnel to rework, which reduces the workload of the rework personnel and is conducive to improving production efficiency.

[0037] According to one embodiment of the utility model, Figure 2As shown, the lower end of the upper ventilation column 11 is set as a first elastic member 111, and the lower end surface of the first elastic member 111 abuts against the upper end surface of the lower ventilation column 21. Specifically, the upper ventilation column 11 has a first elastic member 111, and the first elastic member 111 is located at the lower end of the upper ventilation column 11, that is, the lower end surface of the first elastic member 111 is the lower end surface of the upper ventilation column 11. During the mold closing process of the foamed product production, the lower end surface of the first elastic member 111 abuts against the upper end surface of the lower ventilation column 21. During the mutual extrusion process between the first elastic member 111 and the lower ventilation column 21, the first elastic member 111 generates a downward elastic force, and the first elastic member 111 directly abuts against the lower ventilation column 21, which is conducive to further squeezing out the foaming material between the lower end surface of the first elastic member 111 and the upper end surface of the lower ventilation column 21. In this way, when the foamed product is taken out of the mold 100, there is basically no foam film in the ventilation hole.

[0038] According to one embodiment of the utility model, Figure 2 As shown, the lower end surface of the first elastic member 111 and the upper end surface of the lower ventilation column 21 are configured to be interference fit. That is to say, in the process of driving the first elastic member 111 and the lower ventilation column 21 to squeeze each other, the squeezing force between the two is increased as much as possible, so that the lower end surface of the first elastic member 111 and the upper end surface of the lower ventilation column 21 are in interference fit, which is conducive to increasing the elastic force applied by the first elastic member 111 to the lower ventilation column 21, and is conducive to further squeezing out the foaming material between the lower end surface of the first elastic member 111 and the upper end surface of the lower ventilation column 21. In this way, when the foamed product is taken out of the mold 100, there is basically no foam film in the ventilation hole.

[0039] According to one embodiment of the utility model, Figure 3 and Figure 4 As shown, the upper end of the lower ventilation column 21 is set as a second elastic member 211, and the lower end surface of the upper ventilation column 11 abuts against the upper end surface of the second elastic member 211. Specifically, the lower ventilation column 21 has a second elastic member 211, and the second elastic member 211 is located at the upper end of the lower ventilation column 21, that is, the upper end surface of the second elastic member 211 is the upper end surface of the lower ventilation column 21. During the mold closing process of the foaming product production, the lower end surface of the upper ventilation column 11 abuts against the upper end surface of the second elastic member 211. Optionally, as Figure 4 As shown, when the lower end of the upper ventilation column 11 is set as the first elastic member 111, the lower end surface of the first elastic member 111 is against the upper end surface of the second elastic member 211. During the mutual squeezing process of the first elastic member 111 and the second elastic member 211, the first elastic member 111 and the second elastic member 211 generate relative elastic forces, which is conducive to further squeezing out the foaming material between the lower end surface of the first elastic member 111 and the upper end surface of the second elastic member 211. In this way, when the foamed product is taken out of the mold 100, there is basically no foam film in the ventilation hole.

[0040] According to one embodiment of the utility model, Figure 3 and Figure 4 As shown, the lower end surface of the upper ventilation column 11 and the upper end surface of the second elastic member 211 are configured to be interference fit. That is to say, in the process of driving the upper ventilation column 11 and the lower ventilation column 21 to squeeze each other, the squeezing force between the two is increased as much as possible, so that the lower end surface of the upper ventilation column 11 and the upper end surface of the second elastic member 211 are in interference fit. Optionally, as Figure 4 As shown, when the lower end of the upper ventilation column 11 is set as the first elastic member 111, the lower end surface of the first elastic member 111 and the upper end surface of the second elastic member 211 are in an interference fit, which is beneficial to increase the elastic force exerted by the first elastic member 111 on the second elastic member 211, and is beneficial to further squeeze out the foaming material between the lower end surface of the first elastic member 111 and the upper end surface of the second elastic member 211. In this way, when the foamed product is taken out of the mold 100, there is basically no foam film in the ventilation hole.

[0041] According to an embodiment of the present invention, the elastic member is a rubber member or a silicone member. That is, the first elastic member 111 and the second elastic member 211 can be made of rubber or silicone, and the manufacturing method includes but is not limited to one-piece injection molding. Rubber or silicone can ensure the elastic force of the first elastic member 111 and the second elastic member 211, and the material is simple and easy to obtain, and the cost is low.

[0042] According to one embodiment of the utility model, Figure 1 As shown, it is characterized in that there are multiple upper ventilation columns 11 and multiple lower ventilation columns 21, and the multiple upper ventilation columns 11 correspond to the multiple lower ventilation columns 21. That is to say, the mold 100 can be provided with multiple upper ventilation columns 11 and lower ventilation columns 21 to form multiple ventilation holes on the foamed product. It can be understood that the multiple upper ventilation columns 11 correspond to the multiple lower ventilation columns 21 one by one, and part of the upper ventilation columns 11 and / or part of the lower ventilation columns 21 are set as elastic parts. In this way, it can be ensured that each ventilation hole has no foam film or the thickness of the foam film is negligible, which meets the ventilation requirements of the ventilation holes of the foamed product.

[0043] According to an embodiment of the utility model, the elastic member is configured as a detachable member. That is to say, the elastic members of the upper ventilation column 11 and / or the lower ventilation column 21 are configured as detachable members. For example, the first elastic member 111 is fixedly connected to the upper ventilation column 11 by bolts, and the first elastic member 111 can be removed from the upper ventilation column 11. Similarly, the second elastic member 211 is fixedly connected to the lower ventilation column 21 by bolts, and the second elastic member 211 can be removed from the lower ventilation column 21. In this way, the first elastic member 111 and the second elastic member 211 are easily replaced, which is conducive to improving the replacement efficiency.

[0044] According to an embodiment of the utility model, the length of the upper ventilation column 11 and the lower ventilation column 21 is D, which satisfies the relationship: 30mm≤D≤60mm. In other words, the length of the upper ventilation column 11 and the lower ventilation column 21 can be 30mm, 40mm, 50mm, 60mm, which is set according to the actual situation and is not specifically limited here. In this way, it can be ensured that the upper ventilation column 11 and the lower ventilation column 21 have sufficient length to meet the processing requirements of processing ventilation holes in the thickness direction of the foamed product.

[0045] According to an embodiment of the utility model, the length of the elastic member is d, which satisfies the relationship: 5mm≤d≤10mm. That is to say, the length of the elastic member of the upper ventilation column 11 and the lower ventilation column 21 can be 5mm, 6mm, 7mm, 8mm, 9mm, 0.8mm, 10mm, which is set according to the actual situation and is not specifically limited here. In this way, it can be ensured that the elastic member has a sufficient length, so that the elastic member can provide a large elastic force when compressed and deformed, and the foaming material between the lower end surface of the upper ventilation column 11 and the upper end surface of the lower ventilation column 21 can be squeezed out as much as possible.

[0046] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A mold (100) for foaming a vehicle seat, characterized in that: include: An upper mold (1) and a lower mold (2), wherein the upper mold (1) is fixedly provided with an upper ventilation column (11), and the lower mold (2) is fixedly provided with a lower ventilation column (21) directly opposite to the upper ventilation column (11), a portion of the upper ventilation column (11) and / or a portion of the lower ventilation column (21) are configured as elastic members, and the upper mold (1) is movable relative to the lower mold (2) so that the lower end surface of the upper ventilation column (11) and the upper end surface of the lower ventilation column (21) abut against each other.

2. The mold (100) according to claim 1, characterized in that: The lower end of the upper ventilation column (11) is arranged as a first elastic member (111), and the lower end surface of the first elastic member (111) abuts against the upper end surface of the lower ventilation column (21).

3. The mold (100) according to claim 2, characterized in that: The lower end surface of the first elastic member (111) and the upper end surface of the lower ventilation column (21) are configured to be interference fit.

4. The mold (100) according to claim 2, characterized in that: The upper end of the lower ventilation column (21) is arranged as a second elastic member (211), and the lower end surface of the upper ventilation column (11) and the upper end surface of the second elastic member (211) are in contact with each other.

5. The mold (100) according to claim 4, characterized in that: The lower end surface of the upper ventilation column (11) and the upper end surface of the second elastic member (211) are configured to be interference fit.

6. The mold (100) according to claim 1, characterized in that: The elastic member is configured as a rubber member or a silicone member.

7. The mold (100) according to any one of claims 1 to 6, characterized in that: There are a plurality of the upper ventilation columns (11) and a plurality of the lower ventilation columns (21), and the plurality of the upper ventilation columns (11) correspond one to one to the plurality of the lower ventilation columns (21).

8. The mold (100) according to any one of claims 1 to 6, characterized in that: The elastic member is configured as a detachable member.

9. The mold (100) according to any one of claims 1 to 6, characterized in that: The length of the upper ventilation column (11) and the lower ventilation column (21) is D, which satisfies the relationship: 30mm≤D≤60mm.

10. The mold (100) according to any one of claims 1 to 6, characterized in that: The length of the elastic member is d, which satisfies the relationship: 5mm≤d≤10mm.

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