A seat headrest foaming mold

Abstract

The utility model relates to foaming mould technical field discloses a seat headrest foaming mould, include: fixed mould, be equipped with first top on fixed mould, first top and fixed mould rotatable connection, movable mould, set up on fixed mould, with fixed mould rotatable connection, be equipped with second top on movable mould, second top and movable mould rotatable connection, first top movable lid set up on fixed mould and movable mould, second top movable lid set up on first top, fixed mould, movable mould and first top, or fixed mould, movable mould, first top and second top enclose the cavity for shaping seat headrest, and first top is equipped with a forming boss, and the forming boss is inserted into the cavity. The utility model has the advantages of being used for shaping open seat headrest, saving material investment cost, and the overall structure stability of foaming mould is good.

Description

Technical Field

[0001] This utility model relates to the field of foam mold technology, and in particular to a foam mold for a seat headrest. Background Technology

[0002] The main structure of a car seat headrest mainly includes headrest foam and a cover. The cover covers the outer surface of the headrest foam, and the headrest foam is generally formed by foaming using a foaming mold.

[0003] Existing foam molds for seat headrests generally include a fixed mold and a moving mold. The moving mold is set on the fixed mold, and the two together form the headrest cavity. After the headrest foam is formed, the moving mold opens from the fixed mold, allowing the headrest to be removed. However, for open-type headrests, where the bottom of the headrest foam is open and not completely covered by the cover, this type of foam mold cannot be used. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a moldable open-type seat headrest that saves materials.

[0005] The technical solution adopted by this utility model to solve its technical problem is to provide a foaming mold for a seat headrest, comprising:

[0006] A fixed mold, wherein a first top cover is provided on the fixed mold, and the first top cover is rotatably connected to the fixed mold;

[0007] A moving mold is disposed on the fixed mold and rotatably connected to the fixed mold; a second top cover is provided on the moving mold and rotatably connected to the moving mold; a first top cover is movably disposed on the fixed mold and the moving mold, and a second top cover is movably disposed on the first top cover;

[0008] The fixed mold, the moving mold, and the first top cover, or the fixed mold, the moving mold, the first top cover, and the second top cover, form a cavity for molding a seat headrest, and a molding protrusion is disposed on the first top cover and the molding protrusion extends into the cavity.

[0009] Furthermore, the molded protrusion is provided with a sealing ring along its circumference, and the sealing ring is sleeved on the molded protrusion.

[0010] Furthermore, the molded protrusion has a sealing groove along its circumference, and the sealing ring is disposed in the sealing groove.

[0011] Furthermore, the shaped protrusion is inclined along a ring of sidewalls in its circumference, and the ring of sidewalls gradually inclines from the outside to the inside from top to bottom.

[0012] Furthermore, after the seat headrest is foamed and molded: the second top cover rotates open from the first top cover, the first top cover rotates open from the moving mold and the fixed mold, the moving mold rotates open from the fixed mold, and the molded seat headrest can be removed from the fixed mold.

[0013] Furthermore, the rotation direction of the second top cover is opposite to that of the first top cover, and the rotation direction of the moving mold is the same as that of the second top cover.

[0014] Furthermore, two through slots are arranged side by side on the first top cover, and the two through slots are in communication with the cavity;

[0015] The seat headrest has two support rods, which can respectively pass through the two through slots and extend into the cavity;

[0016] The second top cover is provided with two pressure blocks corresponding to the two through slots. The two pressure blocks can be inserted into the two through slots respectively to press the two support rods together.

[0017] Furthermore, the cross-sectional area of ​​the through groove gradually decreases from top to bottom, and the cross-sectional area of ​​the clamping block gradually decreases from top to bottom;

[0018] The sidewall of the clamping block is movably attached to the sidewall of the through groove, and the draft angle between the through groove and the clamping block is greater than or equal to 20 degrees.

[0019] Furthermore, the first top cover and / or the second top cover are provided with injection nozzles, which are connected to the cavity, and materials can be injected into the cavity from the injection nozzles.

[0020] Furthermore, the fixed mold includes a first fixed mold insert and a second fixed mold insert that are separately arranged, and the first fixed mold insert and the second fixed mold insert are detachably and fixedly connected;

[0021] The first top cover is made of polytetrafluoroethylene.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] In this invention, the seat headrest foaming mold includes a fixed mold, a moving mold, a first top cover, and a second top cover. The first top cover has a forming protrusion that extends into the cavity and partially fills the cavity. This structure can be used to form open-type seat headrests, which can save on the amount of cover and plastic parts used, thereby saving on cost.

[0024] In this invention, a sealing ring is provided around the circumference of the molding protrusion. After the headrest is foamed, the sealing ring is positioned precisely at the boundary line where the cover covers the foamed headrest. The sidewalls of the molding protrusion are inclined to facilitate demolding after the headrest is opened from the mold.

[0025] In this utility model, two through slots are provided side by side on the first top cover, and two pressure blocks are provided on the second top cover. When the two support rods of the seat headrest are inserted into the two through slots, they are pressed tightly by the two pressure blocks to ensure that they are fixed reliably. The support rods and the seat headrest are foamed as one piece. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the foaming mold for the seat headrest of this utility model;

[0027] Figure 2 for Figure 1 A structural diagram from another perspective;

[0028] Figure 3 A schematic diagram showing the structure of the seat headrest support rod fixed in the foam mold;

[0029] Figure 4 for Figure 3 A plan view;

[0030] Figure 5 for Figure 4 Sectional view along AA;

[0031] Figure 6 This is a schematic diagram of the structure after the foaming mold is opened.

[0032] In the picture:

[0033] 1. Fixed mold; 11. First fixed mold insert; 12. Second fixed mold insert; 100. Cavity; 120. Hinge;

[0034] 2. First top cover; 20. Molded protrusion; 21. Sealing ring; 22. Through groove; 201. Sealing groove;

[0035] 3. Moving mold;

[0036] 4. Second top cover; 40. Pressing block;

[0037] 5. Injection nozzle;

[0038] 60. Support pole. Detailed Implementation

[0039] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0040] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0041] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] like Figures 1-6 As shown, a seat headrest foaming mold of this embodiment mainly includes: a fixed mold 1, a moving mold 3, a first top cover 2, a second top cover 4, and an injection nozzle 5. Among them,

[0045] The fixed mold 1 is provided with a first top cover 2, which is rotatably connected to the fixed mold 1. The first top cover 2 is rotatably connected to the fixed mold 1 via a hinge 120, and a hinge 120 is provided at each of the left and right ends near the first top cover 2. The first top cover 2 is rotatably connected to the fixed mold 1 via these two hinges 120.

[0046] The movable mold 3 is mounted on the fixed mold 1 and is rotatably connected to the fixed mold 1. The bottom of the movable mold 3 is rotatably connected to the fixed mold 1 via two hinges 120. The movable mold 3 is provided with a second top cover 4, which is rotatably connected to the movable mold 3. The second top cover 4 is rotatably connected to the movable mold 3 via a hinge 120 near its left and right ends. The first top cover 2 is movably mounted on the fixed mold 1 and the movable mold 3. The second top cover 4 is movably mounted on the first top cover 2, and the second top cover 4 presses down on the first top cover 2.

[0047] The fixed mold 1, the moving mold 3, and the first top cover 2, or the fixed mold 1, the moving mold 3, the first top cover 2, and the second top cover 4, form a cavity 100 for molding a seat headrest. That is, the second top cover 4 may or may not participate in forming the cavity 100. A molding protrusion 20 is disposed on the first top cover 2, and the molding protrusion 20 extends into the cavity 100. The molding protrusion 20 partially fills the cavity 100 so that the foaming mold of this embodiment can be used to mold an open seat headrest.

[0048] In actual use, the seat headrest foam mold of this embodiment includes a fixed mold 1, a moving mold 3, a first top cover 2 and a second top cover 4, and a forming protrusion 20 on the first top cover 2. The forming protrusion 20 extends into the cavity 100 and partially fills the cavity 100. This structure can be used to form open seat headrests, which can save the amount of cover and plastic parts, thereby saving cost investment, because for open seat headrests, the bottom is open and does not need to be bent and covered by the cover.

[0049] Specifically, in this embodiment, the molding protrusion 20 is provided with a sealing ring 21 along its circumference, and the sealing ring 21 is sleeved on the molding protrusion 20. After the seat headrest is molded by the foaming mold, the position of the sealing ring 21 on the seat headrest is the dividing line of the cover covering. The cover covering is sufficient to cover this line, so that the bottom of the seat headrest is open.

[0050] More specifically, the forming protrusion 20 has a sealing groove 201 around its circumference, and the sealing ring 21 is disposed in the sealing groove 201. The sealing ring 21 is an O-ring sealing ring 21. After the O-ring sealing ring 21 is disposed in the sealing groove 201, a part of it protrudes out of the sealing groove 201 and protrudes from the side wall of the forming protrusion 20, while the other part is accommodated in the sealing groove 201.

[0051] In this embodiment, the molding protrusion 20 is inclined along a circumferential sidewall, and the sidewall gradually slopes from the outside to the inside from top to bottom. This inclined sidewall of the molding protrusion 20 facilitates demolding after the seat headrest is molded.

[0052] like Figures 3-6 As shown, two through slots 22 are arranged side by side on the first top cover 2, and the two through slots 22 are connected to the cavity 100. The seat headrest has two support rods 60, which can pass through the two through slots 22 and extend into the cavity 100. During the foaming process of the seat headrest, the two support rods 60 need to be foamed and molded integrally with the car seat headrest. Therefore, before foaming and molding, the two support rods 60 need to be pre-embedded in the foaming mold. In actual use, the car seat headrest is connected to the back of the car seat through the two support rods 60.

[0053] The second top cover 4 is provided with two pressure blocks 40 corresponding to the two through slots 22. The two pressure blocks 40 can extend into the two through slots 22 respectively to press the two support rods 60 together. That is, after the two support rods 60 pass through the two through slots 22 on the first top cover 2 into the cavity 100, the support rods 60 can be positioned and initially fixed by the cooperation between the first top cover 2 and the support rods 60. After the second top cover 4 is placed on the first top cover 2, the two pressure blocks 40 pass through the two through slots 22 respectively, and the two pressure blocks 40 can press the two support rods 60 together to fix the support rods 60.

[0054] In actual use, the first top cover 2 of this embodiment has two through slots 22 arranged side by side, and the second top cover 4 has two pressure blocks 40 correspondingly provided. When the two support rods 60 of the seat headrest are inserted into the two through slots 22, they are pressed by the two pressure blocks 40 to ensure that they are fixed and reliable. The support rods 60 and the seat headrest are foamed as one piece.

[0055] The cross-sectional area of ​​the through groove 22 gradually decreases from top to bottom, and the cross-sectional area of ​​the clamping block gradually decreases from top to bottom. That is, in the reference mold closing state, the cross-sectional area of ​​the through groove 22 gradually decreases from top to bottom, the cross-sectional area of ​​the clamping block gradually decreases from top to bottom, the sidewall of the through groove 22 is inclined and close together from top to bottom, and the sidewall of the clamping block is also inclined and close together from top to bottom.

[0056] Furthermore, the sidewall of the clamping block is movably attached to the sidewall of the through groove 22, and the draft angle between the through groove 22 and the clamping block is greater than or equal to 20 degrees, ensuring the fit between the clamping block and the through groove 22, which can firmly clamp the support rod 60, and the clamping block can easily detach from the through groove 22 when the mold is opened.

[0057] A filling nozzle 5 is provided on the first top cover 2 and / or the second top cover 4. The filling nozzle 5 can be optionally located on the first top cover 2 or the second top cover 4, or on both. Preferably, the filling nozzle 5 is located on both. The filling nozzle 5 communicates with the cavity 100, and material can be injected into the cavity 100 from the filling nozzle 5. That is, during the foaming molding process, material is injected into the cavity 100 through the filling nozzle 5.

[0058] In this embodiment, the fixed mold 1 includes a first fixed mold insert 11 and a second fixed mold insert 12, which are separately arranged. The first fixed mold insert 11 and the second fixed mold insert 12 are detachably and fixedly connected. If the fixed mold 1 is a single piece, it is not only inconvenient to process, but also requires a large amount of steel, resulting in high processing and steel costs. By dividing the fixed mold 1 in this embodiment into a separate, half-open first fixed mold insert 11 and second fixed mold insert 12, it is easier to process and the size of the steel can be reduced, thereby reducing processing and material costs. The first fixed mold insert 11 and the second fixed mold insert 12 are positioned by positioning blocks and positioning grooves, and are detachably and fixedly connected by fixing bolts to ensure convenient disassembly, assembly, and maintenance. The moving mold 3 in this embodiment is not divided because the moving mold 3 itself is not large in size, and the processing of part of its cavity 100 surface is not complicated, so there is no need to divide it.

[0059] In this embodiment, the first top cover 2 is made of polytetrafluoroethylene (PTFE). PTFE is a high-performance synthetic polymer material, one of its most well-known applications being its use on kitchen cookware surfaces to prevent food from sticking. Similarly, by making the first top cover 2 of this embodiment PTFE, it is ensured that the molded protrusion 20 will not stick to the headrest foam after the headrest is foamed.

[0060] After the seat headrest is foamed and molded: the second top cover 4 rotates open from the first top cover 2, the first top cover 2 rotates open from the moving mold 3 and the fixed mold 1, and the moving mold 3 rotates open from the fixed mold 1, realizing the sequential opening of the seat headrest foaming mold. The molded seat headrest can then be removed from the fixed mold 1. Furthermore, the rotation direction of the second top cover 4 is opposite to the rotation direction of the first top cover 2, and the rotation direction of the moving mold 3 is the same as the rotation direction of the second top cover 4.

[0061] In practical use, when it is necessary to mold a seat headrest using the foaming mold of this embodiment, all components should be returned to the mold-closed position, and the two support rods 60 for the seat headrest foaming should be pre-embedded and fixed in the foaming mold (e.g., Figures 3-5(As shown). After the material is injected into the foaming mold cavity 100 through the injection nozzle 5, the support rod 60 is foamed and molded as a whole with it. After the car seat headrest is molded, the mold opening action is performed. First, the second top cover 4 is rotated outward from the first top cover 2 to open, then the second top cover 4 and the moving mold 3 are rotated outward to open respectively, and finally the seat headrest is removed from the foaming mold.

[0062] In this solution, the foam mold for the seat cushion headrest can be used to mold open-type seat headrests, which can save material input costs and the overall structure of the foam mold has good stability.

Claims

1. A foaming mold for a seat headrest, characterized in that, include: A fixed mold, wherein a first top cover is provided on the fixed mold, and the first top cover is rotatably connected to the fixed mold; A moving mold is disposed on the fixed mold and rotatably connected to the fixed mold; a second top cover is provided on the moving mold and rotatably connected to the moving mold; a first top cover is movably disposed on the fixed mold and the moving mold, and a second top cover is movably disposed on the first top cover; The fixed mold, the moving mold, and the first top cover, or the fixed mold, the moving mold, the first top cover, and the second top cover, form a cavity for molding a seat headrest, and a molding protrusion is disposed on the first top cover and the molding protrusion extends into the cavity.

2. The seat headrest foam mold according to claim 1, characterized in that, The forming protrusion is provided with a sealing ring along its circumference, and the sealing ring is sleeved on the forming protrusion.

3. The seat headrest foam mold according to claim 2, characterized in that, The molded protrusion has a sealing groove along its circumference, and the sealing ring is disposed in the sealing groove.

4. The seat headrest foam mold according to claim 1, characterized in that, The shaped protrusion is inclined along a ring of sidewalls in its circumference, and the ring of sidewalls gradually inclines from the outside to the inside from top to bottom.

5. The seat headrest foam mold according to claim 1, characterized in that, After the seat headrest is foamed and molded: the second top cover rotates open from the first top cover, the first top cover rotates open from the moving mold and the fixed mold, the moving mold rotates open from the fixed mold, and the molded seat headrest can be taken out from the fixed mold.

6. The seat headrest foam mold according to claim 5, characterized in that, The rotation direction of the second top cover is opposite to that of the first top cover, and the rotation direction of the moving mold is the same as that of the second top cover.

7. The seat headrest foam mold according to claim 1, characterized in that, The first top cover has two through slots arranged side by side, and the two through slots are connected to the cavity; The seat headrest has two support rods, which can respectively pass through the two through slots and extend into the cavity; The second top cover is provided with two pressure blocks corresponding to the two through slots. The two pressure blocks can be inserted into the two through slots respectively to press the two support rods together.

8. The seat headrest foam mold according to claim 7, characterized in that, The cross-sectional area of ​​the through groove gradually decreases from top to bottom, and the cross-sectional area of ​​the pressure block gradually decreases from top to bottom; The sidewall of the pressure block is movably attached to the sidewall of the through groove, and the draft angle between the through groove and the pressure block is greater than or equal to 20 degrees.

9. The seat headrest foam mold according to claim 1, characterized in that, The first top cover and / or the second top cover are provided with a filling nozzle, which is connected to the cavity, and the material can be injected into the cavity from the filling nozzle.

10. The seat headrest foam mold according to claim 1, characterized in that, The fixed mold includes a first fixed mold insert and a second fixed mold insert that are separately arranged, and the first fixed mold insert and the second fixed mold insert are detachably and fixedly connected. The first top cover is made of polytetrafluoroethylene.

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