Mold for foaming vehicle seat

Abstract

The utility model discloses a mould for foaming a vehicle seat, which comprises a mould core and a lower mould, the mould core is provided with a first cutting piece, the lower mould is provided with a storage groove for storing foaming raw materials, the first cutting piece is provided with a first cutting part opposite to the storage groove, and the mould core can move relative to the lower mould. The first cutting piece is provided with a first cutting part and a second cutting part to drive the first cutting piece to move into the storage groove and enable the first cutting part to abut against and be attached to the inner surface of the storage groove, the first cutting piece is further provided with a flowing channel extending in the thickness direction of the first cutting piece, and the flowing channel is spaced from the edge of the first cutting piece; the side wall, close to the first cutting part, of the flowing channel is provided with a second cutting part opposite to the first cutting part. Therefore, the first cutting part is used for cutting the air bag opening, and when the seat foam is taken down from the mold core, the second cutting part can cut the area, blocked by the solidified seat foam in the flowing channel, in the air bag opening, so that the air bag opening is completely cut open, manual repair cutting is not needed, and the production efficiency is improved.

Description

Technical Field

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

[0002] The seat back airbag is mainly used to block side collisions. The bursting hole is usually located on the side or front of the vehicle seat and is generally inclined at 35° to 60°. The position of the bursting hole is the position of the seat foam airbag opening. During the production process of the upper and lower molds of the foaming mold, the seat foam airbag opening is cut by the airbag knife in the foaming mold. Since the airbag opening is generally inclined at 35° to 60°, the airbag knife is in a non-vertical state. During the mold closing process, the airbag knife will divide the foaming material of the lower mold into two uneven parts, which can easily lead to defects such as dark bubbles and leakage of non-woven fabrics due to insufficient filling of the outer raw material.

[0003] In the related art, in order to solve the problem of uneven distribution of the foaming raw material inside and outside the lower mold caused by the airbag knife during the closing of the upper and lower molds, the airbag knife will be partially opened to allow the foaming raw material to flow on both sides of the airbag knife, thereby making the raw material evenly distributed, solving the defects of dark bubbles and leakage of non-woven fabrics on the outer raw material due to insufficient filling. However, the local opening position of the airbag knife will cause the airbag bursting hole to be partially blocked, so manual repair personnel are required to use a tool to separate the airbag bursting hole, which not only poses a risk of cutting crookedly, but also increases the process and reduces production efficiency. Utility Model Content

[0004] 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, which ensures the flow of foaming raw materials on both sides of the first cutting piece by setting a flow channel on the first cutting piece, so that the foaming raw materials in the lower mold storage tank can be divided into two even parts, solving the defects of dark bubbles and non-woven fabric leakage caused by insufficient filling of raw materials. At the same time, the first cutting part is used to cut the airbag opening, and when the seat foam is removed from the mold core, the second cutting part can cut the area in the airbag opening that is blocked by the solidified seat foam in the flow channel, so that the airbag opening is completely cut, without manual repair and cutting, improving production efficiency, and at the same time ensuring the consistency of the airbag opening cutting effect.

[0005] To achieve the above-mentioned purpose, the embodiment of the utility model proposes a mold for foaming a vehicle seat, comprising: a mold core and a lower mold, the mold core having a first cutting piece, the lower mold having a storage tank for storing a foaming raw material, and the first cutting piece having a first cutting portion arranged opposite to the storage tank, the mold core is movable relative to the lower mold to drive the first cutting piece to move into the storage tank and make the first cutting portion abut against and fit the inner surface of the storage tank;

[0006] The first cutting piece also has a flow channel extending in the thickness direction of the first cutting piece, and the flow channel is spaced apart from the edge of the first cutting piece. The side wall of the flow channel close to the first cutting portion has a second cutting portion arranged opposite to the first cutting portion.

[0007] According to the mold for vehicle seat foaming according to the embodiment of the utility model, a flow channel is set on the first cutting piece to ensure the flow of foaming raw materials on both sides of the first cutting piece, so that the foaming raw materials in the lower mold storage tank can be divided into two even parts, which solves the defects of dark bubbles and leakage of non-woven fabrics caused by insufficient filling of raw materials. At the same time, the first cutting part is used to cut the airbag opening, and when the seat foam is removed from the mold core, the second cutting part can cut the area in the airbag opening that is blocked by the solidified seat foam in the flow channel, so that the airbag opening is completely cut without manual rework cutting, thereby improving production efficiency and ensuring the consistency of the airbag opening effect.

[0008] According to an embodiment of the present invention, there are multiple flow channels, and the multiple flow channels are arranged at intervals along the first direction of the first cutting member.

[0009] According to an embodiment of the utility model, the first cutting member has an opening extending along the thickness direction of the first cutting member, and the first cutting member also has a cutting plate arranged corresponding to the opening, the cutting plate is arranged in the opening and defines a flow channel together with the opening.

[0010] According to an embodiment of the present invention, the cutting plate has a first side wall and a second side wall that are oppositely disposed, the first side wall is aligned with the first cutting portion, and the second side wall is configured as the second cutting portion.

[0011] According to an embodiment of the present utility model, the first side wall is configured as a first cutting portion.

[0012] According to an embodiment of the present invention, the cutting plate is an aluminum alloy part or a stainless steel part.

[0013] According to an embodiment of the present invention, the first cutting piece is an integrally formed piece.

[0014] According to an embodiment of the present invention, the width of the cutting edge of the second cutting portion is d, which satisfies the relationship: 0.3 mm ≤ d ≤ 1.0 mm.

[0015] According to an embodiment of the present invention, along the first direction of the first cutting member, at least one side of the second cutting portion has an arc segment.

[0016] According to an embodiment of the utility model, the lower mold further has a second cutting piece, and the second cutting piece is arranged on the inner surface of the storage groove. When the first cutting piece moves into the storage groove, the first cutting part and the second cutting piece are assembled in cooperation.

[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 a first cutting member according to an embodiment of the utility model.

[0020] Reference numerals:

[0021] Mould 100;

[0022] Mold core 1; first cutting member 11; first cutting portion 111; flow channel 112; second cutting portion 113; arc segment 1131; opening 114; cutting plate 115; first side wall 1151; second side wall 1152;

[0023] Lower mold 2; storage tank 21;

[0024] The first direction X. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] like Figure 1 and Figure 2 As shown, according to an embodiment of the utility model, a mold 100 for foaming a vehicle seat comprises: a mold core 1 and a lower mold 2, the mold core 1 having a first cutting piece 11, the lower mold 100 having a storage tank 21 for storing foaming raw materials, and the first cutting piece 11 having a first cutting portion 111 arranged opposite to the storage tank 21, the mold core 1 is movable relative to the lower mold 2 to drive the first cutting piece 11 to move into the storage tank 21 and make the first cutting portion 111 abut against and fit the inner surface of the storage tank 21, the first cutting piece 11 also has a flow channel 112 extending along the thickness direction of the first cutting piece 11, and the flow channel 112 is spaced apart from the edge of the first cutting piece 11, and the side wall of the flow channel 112 close to the first cutting portion 111 has a second cutting portion 113 arranged opposite to the first cutting portion 111.

[0028] Specifically, the vehicle seat foam is produced by mold 100. It should be noted that an airbag opening needs to be reserved during the vehicle seat foam production process. The airbag opening is the bursting hole when the airbag expands when the vehicle collides. For example, when the vehicle collides with an obstacle, if the collision intensity reaches a preset threshold, the airbag quickly inflates and expands outward from the airbag opening (bursting hole) to provide additional protection for the driver and passengers.

[0029] It is understandable that the seat back airbag is mainly used to prevent side collisions, and the position of the airbag opening (explosion hole) is usually located on the side or front side of the vehicle seat, and is generally inclined at 35° to 60°. Based on this, in some embodiments of the present application, such as Figure 1 As shown, the first cutting piece 11 (airbag knife) and the storage groove 21 are respectively arranged on the mold core 1 and the lower mold 2, wherein the storage grooves 21 on both sides of the lower mold 2 are symmetrically arranged, corresponding to the two sides of the vehicle seat foaming, respectively. In this way, during the vehicle seat foaming production process, the foaming raw material (including but not limited to polyurethane) is poured into the lower mold 2, and the mold core 1 is controlled to move relative to the lower mold 2. For example, the mold core 1 and the upper mold (not shown in the figure) are controlled to rotate toward the lower mold 2 as a whole, that is, during the mold closing process of the upper and lower molds 2 of the mold 100, the first cutting piece 11 is driven by the mold core 1 to move into the storage groove 21, and the first A cutting portion 111 is in contact with the inner surface of the storage tank 21, so that when the foaming raw material is solidified, the first cutting portion 111 of the first cutting piece 11 acts as a cutting blade, which can cut airbag openings on both sides of the vehicle seat foaming, wherein the specific position of the airbag opening is related to the position and angle of the first cutting piece 11. For example, when the airbag opening is arranged on the side or front side of both sides of the vehicle seat foaming, the first cutting piece 11 is correspondingly arranged on the side or front side of both sides of the storage tank 21, and when the airbag opening is inclined at 35° to 60°, the first cutting piece 11 is also inclined at 35° to 60°.

[0030] It should be noted that since the first cutting piece 11 is in a non-vertical state (inclined at 35° to 60°), during the closing process of the upper and lower molds 2 of the mold 100, the first cutting piece 11 will divide the foaming raw material in the storage tank 21 of the lower mold 2 into two uneven parts. This may easily lead to defects such as dark bubbles and leakage of non-woven fabric due to insufficient filling of the outer raw material.

[0031] Based on this, in some embodiments of the present application, Figure 2As shown, a flow channel 112 is provided on the first cutting piece 11. The flow channel 112 includes but is not limited to square holes, round holes and the like. The flow channel 112 is spaced apart from the edge of the first cutting piece 11, and the flow channel 112 extends along the thickness direction of the first cutting piece 11. In this way, during the closing process of the upper and lower molds 2 of the mold 100, the foaming raw materials on both sides of the first cutting piece 11 can flow through the flow channel 112, so that the foaming raw materials in the storage tank 21 of the lower mold 2 can be divided into two even parts, which solves the defects of dark bubbles and leakage of non-woven fabrics caused by insufficient filling of the raw materials. However, after the foaming raw materials are solidified, the flow channel 112 is blocked by the foaming raw materials, that is, the airbag opening cut by the first cutting piece 11 is partially connected at the flow channel 112.

[0032] Based on this, in some embodiments of the present application, a second cutting portion 113 is provided on the side wall of the flow channel 112 close to the first cutting portion 111 and opposite to the first cutting portion 111. It can be understood that the second cutting portion 113 and the first cutting portion 111 are sharpened in opposite directions. With this arrangement, when the foaming raw material is solidified and the vehicle seat foam needs to be removed from the mold core 1, the removal direction of the vehicle seat foam is opposite to the direction of the cutting edge of the second cutting portion 113, so that the second cutting portion 113 can cut the foaming material in the flow channel 112 during the removal process of the vehicle seat foam, that is, cut the area in the airbag opening that is blocked by the solidified seat foam in the flow channel 112, so that the airbag opening is completely cut open, and the entire process does not need to add subsequent manual repair and cutting steps, which reduces the process arrangement, is conducive to improving production efficiency, and can also ensure the consistency of the airbag opening effect.

[0033] According to the mold 100 for vehicle seat foaming according to the embodiment of the utility model, a flow channel 112 is set on the first cutting piece 11 to ensure the flow of the foaming raw material on both sides of the first cutting piece 11, so that the foaming raw material in the storage tank 21 of the lower mold 2 can be divided into two even parts, which solves the defects of dark bubbles and leakage of non-woven fabrics caused by insufficient filling of the raw materials. At the same time, the first cutting part 111 is used to cut the airbag opening, and when the seat foam is removed from the mold core 1, the second cutting part 113 can cut the area in the airbag opening that is blocked by the solidified seat foam in the flow channel 112, so that the airbag opening is completely cut without manual rework and cutting, thereby improving production efficiency and ensuring the consistency of the airbag opening effect.

[0034] In some embodiments of the present invention, Figure 2As shown, there are multiple flow channels 112, and the multiple flow channels 112 are arranged at intervals along the first direction X of the first cutting member 11. That is, the flow channels 112 of the first cutting member 11 can be set to be multiple. For example, the number of flow channels 112 can be 2, 3, 4, or 5. Further, as a specific example, Figure 2 As shown, the first cutting piece 11 is provided with three flow channels 112. It can be understood that the number of the flow channels 112 is set according to the specific situation and is not specifically limited here. By setting a plurality of flow channels 112, when the upper and lower molds 2 of the mold 100 are closed, the foaming raw materials can flow to each other through the plurality of flow channels 112 of the first cutting portion 111, so that the foaming raw materials on both sides of the first cutting piece 11 are more uniform.

[0035] Furthermore, multiple flow channels 112 are arranged at intervals along the first direction X of the first cutting piece 11, wherein the first cutting portion 111 and the second cutting portion 113 are basically parallel to the first direction X, or have a smaller angle. When the first cutting portion 111 is used to cut the airbag opening, it can ensure that the cutting direction of the cutting opening is basically perpendicular to the first direction X. When the vehicle seat foam is removed from the mold core 1, the removal direction of the vehicle seat foam is basically perpendicular to the extension direction of the cutting edge of the second cutting portion 113, which is more convenient for cutting the cutting edge of the second cutting portion 113, so that the area in the cut airbag opening blocked by the seat foam solidified in the flow channel 112 can be more easily cut by the second cutting portion 113.

[0036] In some embodiments of the present invention, Figure 2 As shown, the first cutting member 11 has an opening 114 extending along the thickness direction of the first cutting member 11 , and the first cutting member 11 also has a cutting plate 115 arranged corresponding to the opening 114 , the cutting plate 115 is arranged in the opening 114 and defines a flow channel 112 together with the opening 114 . That is to say, the first cutting piece 11 has an opening 114, and the first cutting piece 11 is provided with a cutting plate 115 assembled with the opening 114. The cutting plate 115 is a detachable part. When the cutting plate 115 is assembled with the opening 114, the cutting plate 115 is installed in the opening 114 and is separated from the bottom wall of the opening 114. In this way, the cutting plate 115 and the opening 114 jointly define a flow channel 112. That is to say, when the upper and lower molds 2 of the mold 100 are closed, the foaming raw material can flow between the cutting plate 115 and the opening 114, which solves the problem of uneven distribution of the foaming raw material in the storage tank 21 of the lower mold 2. The cutting plate 115 and the opening 114 have a simple structure and are easy to assemble, which is suitable for large-scale manufacturing and helps to reduce costs.

[0037] In some embodiments of the present invention, Figure 2As shown, the cutting plate 115 has a first side wall 1151 and a second side wall 1152 which are arranged opposite to each other, the first side wall 1151 is aligned with the first cutting portion 111, and the second side wall 1152 is configured as the second cutting portion 113. That is, during the assembly process of each cutting plate 115 with the corresponding opening 114, the first side wall 1151 of the cutting plate 115 is aligned with the first cutting portion 111 of the first cutting member 11, and the second side wall 1152 is opposite to and spaced from the bottom wall of the opening 114, wherein the second side wall 1152 is configured as the second cutting portion 113, that is, the second side wall 1152 has a cutting edge, and when the vehicle seat foam is removed from the mold core 1, the second side wall 1152 can cut the area blocked by the solidified seat foam between the cutting plate 115 and the opening 114, so that the airbag opening is completely cut open, and the second side wall 1152 of each cutting plate 115 is configured as the second cutting portion 113, which is convenient for large-scale manufacturing and conducive to reducing costs.

[0038] In some embodiments of the present invention, Figure 2 As shown, the first side wall 1151 is configured as the first cutting portion 111. That is, the first side wall 1151 of each cutting plate 115 aligned with the first cutting portion 111 of the first cutting member 11 is configured as the first cutting portion 111, so that the first side wall 1151 of the cutting plate 115 has a cutting function, which is convenient for realizing the integral cutting of the airbag opening, and is convenient for large-scale manufacturing, which is conducive to reducing costs.

[0039] In some embodiments of the present invention, the cutting plate 115 is an aluminum alloy or a stainless steel. That is, the cutting plate 115 can be made of aluminum alloy or stainless steel, thereby improving the strength and hardness of the cutting plate 115, which is conducive to improving the cutting efficiency of the vehicle seat foam. It should be noted that the cutting plate 115 can also be made of other hard alloys, which will not be illustrated one by one here.

[0040] In some embodiments of the present invention, the first cutting member 11 is an integrally formed member. That is, the first cutting member 11 can be constructed as an integrally formed member, for example, the first cutting member 11 can be integrally stamped or integrally cast, and it is understood that the first cutting portion 111 and the second cutting portion 113 of the integrally formed first cutting member 11 need to be sharpened to improve the sharpness of the first cutting portion 111 and the second cutting portion 113.

[0041] In some embodiments of the present invention, the width of the blade of the second cutting portion 113 is d, which satisfies the relationship: 0.3mm≤d≤1.0mm. In other words, the width of the blade of the second cutting portion 113 can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, which is set according to actual conditions and is not specifically limited here. In this way, the sharpness of the second cutting portion 113 can be ensured, so that the area in the airbag opening blocked by the solidified seat foam in the flow channel 112 can be cut more easily.

[0042] In some embodiments of the present invention, Figure 2 As shown, along the first direction X of the first cutting member 11, at least one side of the second cutting portion 113 has an arc segment 1131. That is, the second cutting portion 113 extends along the first direction X, and at least one side of the second cutting portion 113 is provided with an arc segment 1131, that is, both sides of the second cutting portion 113 are provided with an arc segment 1131, or any side of the two sides of the second cutting portion 113 is provided with an arc segment 1131. Further, as a specific example, the first cutting member 11 is provided according to Figure 2 Taking the placement direction shown as an example, an arc segment 1131 is provided on the lower side of the second cutting portion 113. In this way, when the vehicle seat foam is removed from the mold core 1, the arc segment 1131 first cuts the vehicle seat foam, making it easier to cut open the area in the airbag opening that is blocked by the solidified seat foam in the flow channel 112.

[0043] In some embodiments of the utility model, the lower mold 2 further has a second cutting piece, which is arranged on the inner surface of the storage groove 21. When the first cutting piece 11 moves into the storage groove 21, the first cutting portion 111 cooperates with the second cutting piece. In other words, the lower mold 2 is provided with a second cutting piece that cooperates with the first cutting piece 11, and the second cutting piece is arranged in the cutting groove. When the first cutting piece 11 moves into the storage groove 21, the first cutting portion 111 of the first cutting piece 11 moves into the cutting groove of the second cutting piece. Such a configuration makes it easier to cut the airbag opening as a whole, which helps to ensure the consistency of the cutting of the airbag opening.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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: A mold core (1) and a lower mold (2), wherein the mold core (1) has a first cutting piece (11), the lower mold (2) has a storage tank (21) for storing foaming raw materials, and the first cutting piece (11) has a first cutting portion (111) arranged opposite to the storage tank (21), and the mold core (1) is movable relative to the lower mold (2) to drive the first cutting piece (11) to move into the storage tank (21) and to make the first cutting portion (111) abut against and fit the inner surface of the storage tank (21); The first cutting piece (11) further comprises a flow channel (112) extending in a thickness direction of the first cutting piece (11), and the flow channel (112) is spaced apart from an edge of the first cutting piece (11), and a side wall of the flow channel (112) close to the first cutting portion (111) comprises a second cutting portion (113) arranged opposite to the first cutting portion (111).

2. The mold (100) according to claim 1, characterized in that: There are a plurality of flow channels (112), and the plurality of flow channels (112) are arranged at intervals along the first direction of the first cutting member (11).

3. The mold (100) according to claim 2, characterized in that: The first cutting member (11) has an opening (114), the opening (114) extending along the thickness direction of the first cutting member (11), and the first cutting member (11) also has a cutting plate (115) arranged corresponding to the opening (114), the cutting plate (115) being arranged in the opening (114) and defining the flow channel (112) together with the opening (114).

4. The mold (100) according to claim 3, characterized in that: The cutting plate (115) has a first side wall (1151) and a second side wall (1152) that are arranged opposite to each other, the first side wall (1151) is aligned with the first cutting portion (111), and the second side wall (1152) is configured as the second cutting portion (113).

5. The mold (100) according to claim 4, characterized in that: The first side wall (1151) is configured as the first cutting portion (111).

6. The mold (100) according to claim 4, characterized in that: The cutting plate (115) is an aluminum alloy part or a stainless steel part.

7. The mold (100) according to any one of claims 1 to 6, characterized in that: The first cutting piece (11) is an integrally formed piece.

8. The mold (100) according to any one of claims 1 to 6, characterized in that: The blade width of the second cutting portion (113) is d, which satisfies the relationship: 0.3mm≤d≤1.0mm.

9. The mold (100) according to any one of claims 1 to 6, characterized in that: Along the first direction of the first cutting member (11), at least one side of the second cutting portion (113) has an arc segment (1131).

10. The mold (100) according to any one of claims 1 to 6, characterized in that: The lower mold (2) also has a second cutting piece, which is arranged on the inner surface of the storage groove (21). When the first cutting piece (11) moves into the storage groove (21), the first cutting portion (111) is assembled with the second cutting piece.

Images