Massage air bag for automobile seat and manufacturing method of massage air bag
Through blow molding process and high-circuit welding technology, the problems of complex production process, high material cost and low production efficiency of car seat massage air bags are solved, and the stability of the air bag performance and production efficiency are improved, avoiding air leakage question.
Patent Information
- Application Number
- CN202411653058.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-01-10
AI Technical Summary
The existing car seat massage air bags have complex production process, high material cost, low production efficiency, and unstable performance, which is prone to air leakage.
The massage air bag for car seats is made using blow molding. By adding reinforcement components at the top and bottom ends, and discharging welding is performed using high-circuit wave equipment, the process flow is simplified and the mold design is optimized to improve material utilization and product strength.
It achieves simple process, low material cost, high production efficiency, and stable performance of the air bag, avoids air leakage and improves the overall performance of the massage air bag.
Smart Images
Figure CN119283748A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present application relate to the technical field of pneumatic massage devices for automobile seats, and in particular to a massage air bag for automobile seats and a method for manufacturing the same. Background Art
[0002] As living standards continue to improve, people's demands for car performance, appearance and safety performance continue to increase, and the comfort requirements for car seats are also constantly increasing. At present, the configuration of seat comfort is constantly improving, such as heating, ventilation, lumbar support, massage and other functions. It can be seen that people are pursuing comfort.
[0003] The massage system mainly adopts pneumatic massage, and the pneumatic massage adopts one or two layers of massage air bags or three or more layers of massage air bags. The current manufacturing process of massage air bags is: the purchased roll TPU film or other materials are cut into shape, and then connected and welded, edge welded, and air pipe welded. Taking the three-layer air bag as an example, it has the following problems: 1. Complex process: more than 6 die-cutting processes require more than 6 welding processes; 2. High material cost: low utilization rate of die-cutting materials and large waste; 3. Low production efficiency: cutting requires sorting and classification of cut pieces, welding requires multiple placement and overlapping welding, and the welding time is long; 4. Unstable performance: for the welding around the air bag, it is difficult to ensure the flatness of the periphery, and it is easy to have inconsistent welding thickness and inconsistent peeling strength. Under the high-pressure gas of long-term massage, the air bag will be welded open, leaking, and losing the massage function.
[0004] In view of the above situation, there is an urgent need to design a massage air bag with simple process, low material cost, high production efficiency and stable performance. Summary of the invention
[0005] In view of this, an embodiment of the present application provides a massage air bag for a car seat and a manufacturing method thereof to solve the technical problems raised by the background technology.
[0006] The first aspect of the embodiment of the present application provides a massage airbag for a car seat, comprising at least one airbag layer, the top of the airbag layer is provided with a top convex reinforcement part, the bottom of the airbag layer is provided with a bottom fixed layer, and the side of the airbag layer is also integrally formed with a trachea reinforcement part, and the trachea reinforcement part is connected to the trachea. In order to deal with the excess material heads at the top and bottom of the blow molding mold and the strength of the massage airbag for the car seat, a top convex reinforcement part is added to the top of the massage airbag for the car seat, and a bottom fixed layer is added to the bottom, so as to improve the massage strength at the top and increase the fixing stability at the bottom, so as to improve the performance of the massage airbag for the car seat; a puncture air inlet is added to the right side or other side of the bottom surface of the blow molding mold, and the mold blow molding port is optimized to be a trachea reinforcement part, and the large thickness facilitates subsequent welding.
[0007] In some embodiments that may include the above embodiments, the massage airbag for car seat includes three airbag layers, the three airbag layers are respectively a first airbag layer, a second airbag layer and a third airbag layer, the first airbag layer, the second airbag layer and the third airbag layer are integrally formed and connected, the top of the first airbag layer is provided with a top convex point reinforcement part, the bottom of the third airbag layer is provided with a bottom fixing layer, and the side of the third airbag layer is also integrally provided with a trachea reinforcement part, and the trachea reinforcement part is connected to the trachea. The massage airbag for car seat is composed of three airbag layers, and can also be one airbag layer, two airbag layers or four airbag layers, or even more airbag layers.
[0008] In some embodiments that may include the above embodiments, the shape of the massage airbag for the car seat includes but is not limited to a circle, a rectangle, a diamond, or a plum blossom, in order to match the seat layout. When the shape of the massage airbag for the car seat is a circle, the diameter of the massage airbag for the car seat can be different sizes such as 50mm, 55mm, 60mm, 65mm, 70mm, etc.
[0009] In some embodiments that may include the above embodiments, the shape of the top end protrusion reinforcement portion includes but is not limited to a circular arc convex shape.
[0010] In some embodiments that may include the above embodiments, the thickness of the massage airbag for car seat is 0.35-0.55 mm. In order to ensure the strength and service life of the massage airbag for car seat, the thickness of the massage airbag for car seat can be controlled within the range of 0.35-0.55 mm.
[0011] In some embodiments that may include the above embodiments, the material of the airbag layer is a TPU material containing polyester / polyether polyol; the material of the air tube is a polyester / polyether TPU material. In order to ensure the softness, pressure resistance, and process feasibility of the massage airbag for the car seat, the material of the airbag layer is a TPU material containing polyester or polyether polyol, and the air tube uses TPU polyester or polyether material.
[0012] In some embodiments that may include the above embodiments, high-frequency equipment is used to perform discharge welding on the air pipe reinforcement portion and the air pipe.
[0013] A second aspect of the embodiment of the present application further provides a method for manufacturing the above-mentioned massage airbag for a car seat, comprising the following steps:
[0014] The TPU particle raw material containing polyester or polyether polyol is dried, dehumidified, and preheated. The barrel is preheated to heat and melt the raw material, and a tubular preform is extruded through an extruder. The tubular preform is placed in a blow molding mold and sealed. The air holes are punctured from the bottom or other parts, and compressed air is introduced to inflate the inner preform to form an air bag layer structure. After cooling and repair, the air pipe reinforcement part and the air pipe are discharge-welded using high-frequency equipment to produce a massage air bag for a car seat.
[0015] In some embodiments, which may include the above embodiments, the blow molding mold is a corrugated blow molding mold.
[0016] In some embodiments that may include the above embodiments, after the air bag layer is blow-molded, the top end convex point reinforcement portion, the bottom end fixing layer and the air tube reinforcement portion are trimmed.
[0017] Preferably, the extrusion wall thickness is controlled to be between 0.9-1.5 mm during the extrusion molding process.
[0018] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0019] (1) The process of this application is simple: the entire process consists of extrusion-blow molding-molding, which is completed by a blow molding mold;
[0020] (2) The material cost of this application is low: the blow molding TPU particles or other materials are selected, the mold design is matched, the material handle is optimized, and the material cost is reduced. Due to the mature blow molding process, the product process qualification rate can be improved;
[0021] (3) The present application has high production efficiency: it adopts the blow molding process and one-time molding, which replaces the traditional multiple cutting and multiple welding process, which is simple and effective;
[0022] (4) The airbags of the present application have stable performance and good quality: blow molding is an integrated molding process, which eliminates internal welding and edge welding, and is an integrated airbag assembly, eliminating the phenomenon of air bag leakage caused by open welding. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1 This is a schematic structural diagram of a massage air bag for a car seat in an inflated state according to an embodiment of the present application;
[0025] Figure 2This is a schematic structural diagram of a massage air bag for a car seat in an embodiment of the present application in a deflated state;
[0026] Figure 3 This is a schematic diagram of blow molding of a massage air bag for a car seat according to an embodiment of the present application;
[0027] Figure 4 The left side schematic diagram of the corrugated blow molding mold;
[0028] Figure 5 It is the right schematic diagram of the corrugated blow molding mold;
[0029] Figure 6 Schematic diagram of the left and right side of the corrugated blow molding mold.
[0030] Description of reference numerals:
[0031] 1. Top convex point reinforcement part; 2. First air bag layer; 3. Second air bag layer; 4. Third air bag layer; 5. Bottom fixing layer; 6. Trachea reinforcement part; 7. Trachea. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0033] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.
[0034] Secondly, it should be noted that in the description of the present application, terms such as "up", "down", "left", "right", "front", "back", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.
[0035] Example 1
[0036] An embodiment of the present application provides a massage air bag for a car seat, comprising an air bag layer, a top convex reinforcement portion 1 is provided on the top of the air bag layer, a bottom fixing layer 5 is provided on the bottom of the air bag layer, and an air pipe reinforcement portion 6 is integrally formed on the side of the air bag layer, and the air pipe reinforcement portion is connected to an air pipe 7.
[0037] In order to deal with the excess material heads at the top and bottom of the blow mold and the strength of the massage airbag for car seats, a top convex reinforcement part is added to the top of the massage airbag for car seats, and a bottom fixing layer is added to the bottom to facilitate the massage strength at the top and the fixation stability at the bottom to improve the performance of the massage airbag for car seats; a puncture air inlet is added to the right side or other sides of the bottom of the blow mold, and the mold blow molding port is optimized to be a trachea reinforcement part with a large thickness for subsequent welding. For example, a high-frequency device is used to discharge weld the trachea reinforcement part and the trachea.
[0038] Specifically, the shape of the massage airbag for the car seat includes but is not limited to a circle, rectangle, diamond, or plum blossom, in order to match the seat layout. When the shape of the massage airbag for the car seat is a circle, the diameter of the massage airbag for the car seat can be 50mm, 55mm, 60mm, 65mm, 70mm, etc., which can be adjusted according to actual needs, and the embodiment of the present application does not limit this. Specifically, the shape of the top convex point reinforcement part 6 includes but is not limited to a circular arc convex shape.
[0039] Specifically, the thickness of the massage airbag for the car seat is 0.35-0.55 mm. In order to ensure the strength and service life of the massage airbag for the car seat, the thickness of the massage airbag for the car seat can be controlled within the range of 0.35-0.55 mm.
[0040] Furthermore, the material of the airbag layer is a TPU material containing polyester / polyether polyol; the material of the air tube is a polyester / polyether TPU material. In order to ensure the softness, pressure resistance, and process feasibility of the massage airbag for the car seat, the material of the airbag layer is a TPU material containing polyester or polyether polyol, and the air tube uses TPU polyester or polyether material.
[0041] Example 2
[0042] like Figure 1-3 As shown, the massage airbag for car seat of this embodiment can refer to the embodiment 1, the difference is that the massage airbag for car seat includes three airbag layers, the three airbag layers are respectively the first airbag layer 2, the second airbag layer 3 and the third airbag layer 4, and the first airbag layer 2, the second airbag layer 3 and the third airbag layer 4 are integrally formed and connected, the top of the first airbag layer 2 is provided with a top convex point reinforcement part 1, the bottom of the third airbag layer 4 is provided with a bottom fixing layer 5, and the side of the third airbag layer 4 is also integrally formed with a trachea reinforcement part 6, and the trachea reinforcement part 6 is connected to the trachea 7. In other specific embodiments, the massage airbag for car seat can also be two airbag layers or four airbag layers, and it is also feasible to be composed of more airbag layers.
[0043] Example 3
[0044] This embodiment provides a method for manufacturing a massage air bag for a car seat in Embodiment 2, comprising the following steps:
[0045] The TPU particle raw material containing polyester or polyether polyol is dried, dehumidified, and preheated. The barrel is preheated to heat and melt the raw material, and a tubular preform is extruded through an extruder. The tubular preform is placed in a blow molding mold and sealed. The air holes are punctured from the bottom or other parts, and compressed air is introduced to inflate the inner preform to form an air bag layer structure. After cooling and repair, the air pipe reinforcement part 6 and the air pipe 7 are discharge-welded using high-frequency equipment to obtain a massage air bag for a car seat.
[0046] The entire production process can be summarized as: TPU particle dehumidification - TPU particle preheating - TPU particle melting - extruder extrusion of tubular billet - melting and sealing in the blow mold - bottom pore puncture - compressed air inflation - cooling treatment - maintenance - high-frequency welding of air pipe.
[0047] In some embodiments that may include the above embodiments, the blow mold is a corrugated blow mold, such as Figure 4-6 As shown, the shape and size of the corrugated blow mold are adapted to the massage airbag for the car seat. The blow mold is designed in size and angle, for example, matching the design ejection height of the massage airbag for the car seat.
[0048] In some embodiments including the above embodiments, after the air bag layer is blow-molded, the top convex point reinforcement part 1, the bottom fixing layer 5 and the air tube reinforcement part 6 are trimmed. The trimming part is designed and the trimming size is set according to the actual required process parameters.
[0049] Specifically, in the extrusion molding process, the extrusion wall thickness is controlled to be between 0.9-1.5 mm, for example, the wall thickness is 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, etc. It can be set according to actual needs, and this embodiment does not limit this.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A massage air bag for a car seat, characterized in that: The invention comprises at least one air bag layer, wherein a top convex point reinforcement part (1) is arranged on the top of the air bag layer, a bottom fixing layer (5) is arranged on the bottom of the air bag layer, and an air pipe reinforcement part (6) is integrally formed on the side of the air bag layer, and the air pipe reinforcement part (6) is connected to the air pipe (7).
2. The massage air bag for automobile seat according to claim 1, characterized in that: The massage airbag for the automobile seat comprises three airbag layers, the three airbag layers being respectively a first airbag layer (2), a second airbag layer (3) and a third airbag layer (4); the first airbag layer (2), the second airbag layer (3) and the third airbag layer (4) are integrally formed and connected; the top of the first airbag layer (2) is provided with a top convex point reinforcement portion (1); the bottom of the third airbag layer (4) is provided with a bottom fixing layer (5); the side of the third airbag layer (4) is also integrally formed with an air pipe reinforcement portion (6); the air pipe reinforcement portion (6) is connected to an air pipe (7).
3. The massage air bag for automobile seat according to claim 1, characterized in that: The shape of the massage airbag for the car seat includes but is not limited to circular, rectangular, diamond, and plum blossom shapes.
4. The massage air bag for automobile seat according to claim 1, characterized in that: The shape of the top convex point reinforcement portion (1) includes but is not limited to a circular arc convex shape.
5. The massage air bag for automobile seat according to claim 1, characterized in that: The thickness of the massage airbag for the car seat is 0.35-0.55 mm.
6. The massage air bag for automobile seat according to claim 1, characterized in that: The material of the air bag layer is a TPU material containing polyester / polyether polyol; the material of the air pipe (7) is a polyester / polyether TPU material.
7. The massage air bag for automobile seat according to claim 1, characterized in that: High-frequency equipment is used to perform discharge welding on the air pipe reinforcement portion (6) and the air pipe (7).
8. A method for manufacturing a massage air bag for a car seat according to any one of claims 1 to 7, characterized in that: The following steps are involved: The TPU particle raw material containing polyester or polyether polyol is dried, dehumidified, and preheated. The barrel is preheated to heat and melt the raw material, and a tubular preform is extruded through an extruder. The tubular preform is placed in a blow molding mold and sealed. Then, air holes are punctured from the bottom or other parts, and compressed air is introduced to inflate the inner preform to form an air bag layer structure. After cooling and repair, the air pipe reinforcement part (6) and the air pipe (7) are discharge-welded using high-frequency equipment to obtain a massage air bag for a car seat.
9. The method for manufacturing a massage air bag for a car seat according to claim 8, characterized in that: The blow molding mold adopts a corrugated blow molding mold.
10. The method for manufacturing a massage air bag for a car seat according to claim 8, characterized in that: After the air bag layer is blow-molded, the top convex point reinforcement part (1), the bottom fixing layer (5) and the air pipe reinforcement part (6) are trimmed.