Bicycle saddle and preparation method thereof

Abstract

The invention discloses a bicycle saddle and a preparation method thereof.The bicycle saddle comprises an upper saddle body and a lower saddle body, the upper saddle body is made of a TPU 3D printing material, the lower saddle body is made of a TPE supercritical foaming material, the TPU 3D printing material and the TPE supercritical foaming material are made into the upper saddle body and the lower saddle body in the needed shapes respectively, and then the bicycle saddle body is manufactured through pressing. The invention relates to the technical field of bicycle cushions. According to the bicycle saddle and the preparation method thereof, double-layer design can be carried out on the bicycle saddle, so that the saddle has a good elastic buffering effect and a good wear-resisting effect, and the purposes that riding comfort of people is guaranteed, and long-term wear-resisting use can be carried out are well achieved; the wear-resisting performance and the elastic buffering effect of the bicycle saddle are greatly improved, discomfort caused by long-term riding of people is avoided, the situation that the saddle is peeled off or cracked due to long-term abrasion of the saddle is avoided, and therefore the bicycle saddle is greatly convenient to use by people.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle seat cushions, in particular to a bicycle seat cushion and a preparation method thereof. Background Art

[0002] Bicycle seats are bicycle accessories that come into direct contact with the buttocks when riding. They are composed of four parts and can be divided into two types. Narrow and slender hard seat cushions are commonly found on sports bikes and are designed for high-speed cruising. Wide and soft comfortable seat cushions are more common on entry-level or leisure-oriented bikes and are designed for slow cruising. With the continuous development of Internet technology, bicycles are gradually moving towards intelligence and realizing more functions and roles. In particular, the emergence of shared bicycles has greatly promoted the process of bicycle intelligence. The popularity of shared bicycles has solved the problem of short-distance travel for people and made people's lives more convenient.

[0003] The existing bicycle seat cushions have poor wear resistance and elastic cushioning effect, which will cause discomfort to people when riding for a long time, and long-term wear of the seat cushion will cause the seat cushion to peel or crack. It is not possible to achieve a double-layer design of the bicycle seat cushion to make the seat cushion have good elastic cushioning effect and wear resistance, and it is impossible to achieve the purpose of ensuring people's riding comfort and long-term wear-resistant use, which brings great inconvenience to people. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a bicycle seat cushion and a preparation method thereof, which solve the problems that the existing bicycle seat cushions have poor wear resistance and elastic cushioning effect, which cause discomfort to people when riding for a long time, and long-term wear of the seat cushion may cause the seat cushion to peel or crack, and it is not possible to achieve a double-layer design of the bicycle seat cushion to make the seat cushion have good elastic cushioning effect and wear resistance, and it is impossible to achieve the goal of both ensuring people's riding comfort and long-term wear-resistant use.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a bicycle seat cushion, comprising an upper cushion and a lower cushion, wherein the upper cushion is made of TPU 3D printing material, and the lower cushion is made of TPE supercritical foaming material, and the upper cushion and the lower cushion of the required shape are made by respectively using the TPU 3D printing material and the TPE supercritical foaming material, and then pressed together to form the bicycle seat cushion; The raw materials of the TPU 3D printing material include, by weight: 70-80 parts of TPU, 3-5 parts of a first foaming agent, 1-3 parts of a stabilizer, 5-10 parts of PSF, 1-3 parts of a toughening agent, and 0.5-1 parts of an antioxidant; The raw materials of the TPE supercritical foaming material include, by weight: 80-90 parts of TPE, 3-5 parts of a second foaming agent, 0.5-1 parts of a bridging agent and 1-3 parts of a lubricant.

[0007] Preferably, the first blowing agent is one of chlorofluorocarbons, dichloromonofluoroethane or cyclopentane.

[0008] Preferably, the second blowing agent is azodicarbonamide.

[0009] Preferably, the toughening agent is one of styrene-butadiene thermoplastic elastomer, methyl methacrylate-butadiene-styrene terpolymer or acrylonitrile-butadiene-styrene copolymer.

[0010] Preferably, the bridging agent is 1,4-di-tert-butylperoxyisopropylbenzene.

[0011] Preferably, the lubricant is one of zinc stearate, polyethylene wax, EBS or ammonium acrylate.

[0012] The present invention also provides a method for preparing a bicycle seat cushion, which specifically comprises the following steps: S1. Batching: using a weighing device to measure the required weight portions of TPU, the first foaming agent, the stabilizer, PSF, the toughening agent and the antioxidant TPU 3D printing material raw material and the required weight portions of TPE, the second foaming agent, the bridging agent and the lubricant TPE supercritical foaming material raw material; S2, forming the upper pad: pour the TPU, the first foaming agent, the stabilizer, the PSF, the toughening agent and the antioxidant weighed in step S1 into a mixing and stirring device in sequence, and then blend them at a rotation speed of 200-300 r / min for 20-30 min to obtain a TPU 3D printing material, and then pour the TPU 3D printing material into a feed barrel of the 3D printing device, enter the modeling data program of the bicycle upper pad into the 3D printing device, and then start the 3D printing device, so that the 3D printing device prints and processes the bicycle upper pad according to the entered program; S3, forming the bottom pad: the TPE, the second foaming agent, the bridging agent and the lubricant weighed in step S1 are blended in a mixing device at a rotation speed of 300-400 r / min to obtain a mixed material, and then the mixed material is added to a twin-screw extruder and mixed evenly to obtain a secondary mixed material, and then the secondary mixed material is injected into a molding mold designed in advance according to the size of the bottom pad for foaming to obtain a bicycle bottom pad; S4, pressing treatment: the bicycle upper pad obtained in step S2 and the bicycle lower pad obtained in step S3 are passed through a pressing device, and a layer of adhesive is applied between the upper pad and the lower pad, and then the upper pad and the lower pad are pressed together to form a complete bicycle seat cushion.

[0013] (III) Beneficial effects

[0014] The present invention provides a bicycle seat cushion and a preparation method thereof. Compared with the prior art, the present invention has the following beneficial effects: the bicycle seat cushion and the preparation method thereof, comprising an upper cushion and a lower cushion, the upper cushion being made of a TPU 3D printing material, and the lower cushion being made of a TPE supercritical foaming material, by respectively making an upper cushion and a lower cushion of a desired shape with the TPU 3D printing material and the TPE supercritical foaming material, and then pressing them together to make a bicycle seat cushion, the bicycle seat cushion can be designed with a double layer to have a good elastic cushioning effect and a wear-resistant effect, which well achieves the purpose of ensuring the comfort of people's riding and being able to be used for a long time with wear resistance, greatly improving the wear resistance and elastic cushioning effect of the bicycle seat cushion, avoiding discomfort caused by long-term riding, and avoiding the situation that the seat cushion peels or cracks due to long-term wear, thereby greatly facilitating people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a flow chart of the preparation method. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1 The embodiments of the present invention provide three technical solutions: a bicycle seat cushion and a preparation method thereof, which specifically include the following embodiments: Example 1

[0018] A bicycle seat cushion comprises an upper cushion and a lower cushion, wherein the upper cushion is made of TPU 3D printing material, and the lower cushion is made of TPE supercritical foaming material. The upper cushion and the lower cushion of required shapes are made of TPU 3D printing material and TPE supercritical foaming material respectively, and then pressed together to make the bicycle seat cushion.

[0019] The raw materials of TPU 3D printing material include, by weight: 75 parts of TPU, 4 parts of the first foaming agent, 2 parts of the stabilizer, 7 parts of PSF, 2 parts of the toughening agent and 0.7 parts of the antioxidant; The raw materials of TPE supercritical foaming material include 85 parts of TPE, 4 parts of second foaming agent, 0.7 parts of bridging agent and 2 parts of lubricant by weight. The first foaming agent is fluorochlorocarbon, the toughening agent is styrene-butadiene thermoplastic elastomer, the second foaming agent is azodicarbonamide, the bridging agent is 1,4-di-tert-butylperoxyisopropylbenzene, and the lubricant is zinc stearate.

[0020] The embodiment of the present invention also provides a method for preparing a bicycle seat cushion, which specifically comprises the following steps: S1. Batching: using a weighing device to measure the required weight portions of TPU, the first foaming agent, the stabilizer, PSF, the toughening agent and the antioxidant TPU 3D printing material raw material and the required weight portions of TPE, the second foaming agent, the bridging agent and the lubricant TPE supercritical foaming material raw material; S2, forming the upper pad: pour the TPU, the first foaming agent, the stabilizer, the PSF, the toughening agent and the antioxidant weighed in step S1 into a mixing and stirring device in sequence, and then blend them for 25 minutes at a rotation speed of 250 r / min to obtain a TPU 3D printing material, and then pour the TPU 3D printing material into a feed barrel of the 3D printing device, enter the modeling data program of the bicycle upper pad into the 3D printing device, and then start the 3D printing device, so that the 3D printing device prints and processes the bicycle upper pad according to the entered program; S3, forming the bottom pad: the TPE, the second foaming agent, the bridging agent and the lubricant weighed in step S1 are blended in a mixing device at a rotation speed of 350 r / min to obtain a mixed material, and the mixed material is then added to a twin-screw extruder for uniform mixing to obtain a secondary mixed material, and the secondary mixed material is then injected into a molding mold designed in advance according to the size of the bottom pad for foaming to obtain a bicycle bottom pad; S4, pressing treatment: the bicycle upper pad obtained in step S2 and the bicycle lower pad obtained in step S3 are passed through a pressing device, and a layer of adhesive is applied between the upper pad and the lower pad, and then the upper pad and the lower pad are pressed together to form a complete bicycle seat cushion. Example 2

[0021] A bicycle seat cushion comprises an upper cushion and a lower cushion, wherein the upper cushion is made of TPU 3D printing material, and the lower cushion is made of TPE supercritical foaming material. The upper cushion and the lower cushion of required shapes are made of TPU 3D printing material and TPE supercritical foaming material respectively, and then pressed together to make the bicycle seat cushion.

[0022] The raw materials of TPU 3D printing materials include, by weight: 70 parts of TPU, 3 parts of the first foaming agent, 1 part of the stabilizer, 5 parts of PSF, 1 part of the toughening agent and 0.5 parts of the antioxidant; The raw materials of TPE supercritical foaming material include, by weight: 80 parts of TPE, 3 parts of the second foaming agent, 0.5 parts of a bridging agent and 1 part of a lubricant. The first foaming agent is monofluorodichloroethane, the toughening agent is a terpolymer of methyl methacrylate-butadiene-styrene, the second foaming agent is azodicarbonamide, the bridging agent is 1,4-di-tert-butylperoxyisopropylbenzene, and the lubricant is polyethylene wax.

[0023] The embodiment of the present invention also provides a method for preparing a bicycle seat cushion, which specifically comprises the following steps: S1. Batching: using a weighing device to measure the required weight portions of TPU, the first foaming agent, the stabilizer, PSF, the toughening agent and the antioxidant TPU 3D printing material raw material and the required weight portions of TPE, the second foaming agent, the bridging agent and the lubricant TPE supercritical foaming material raw material; S2, forming the upper pad: pour the TPU, the first foaming agent, the stabilizer, the PSF, the toughening agent and the antioxidant weighed in step S1 into a mixing and stirring device in sequence, and then blend them at a rotation speed of 200 r / min for 20 minutes to obtain a TPU 3D printing material, and then pour the TPU 3D printing material into a feed barrel of the 3D printing device, enter the modeling data program of the bicycle upper pad into the 3D printing device, and then start the 3D printing device, so that the 3D printing device prints and processes the bicycle upper pad according to the entered program; S3, forming the bottom pad: the TPE, the second foaming agent, the bridging agent and the lubricant weighed in step S1 are blended in a mixing device at a rotation speed of 300 r / min to obtain a mixed material, and then the mixed material is added to a twin-screw extruder and mixed evenly to obtain a secondary mixed material, and then the secondary mixed material is injected into a molding mold designed in advance according to the size of the bottom pad for foaming to obtain a bicycle bottom pad; S4, pressing treatment: the bicycle upper pad obtained in step S2 and the bicycle lower pad obtained in step S3 are passed through a pressing device, and a layer of adhesive is applied between the upper pad and the lower pad, and then the upper pad and the lower pad are pressed together to form a complete bicycle seat cushion. Example 3

[0024] A bicycle seat cushion comprises an upper cushion and a lower cushion, wherein the upper cushion is made of TPU 3D printing material, and the lower cushion is made of TPE supercritical foaming material. The upper cushion and the lower cushion of required shapes are made of TPU 3D printing material and TPE supercritical foaming material respectively, and then pressed together to make the bicycle seat cushion.

[0025] The raw materials of TPU 3D printing materials include, by weight: 80 parts of TPU, 5 parts of the first foaming agent, 3 parts of the stabilizer, 10 parts of PSF, 3 parts of the toughening agent and 1 part of the antioxidant; The raw materials of TPE supercritical foaming material include, by weight: 90 parts of TPE, 5 parts of the second foaming agent, 1 part of the bridging agent and 3 parts of the lubricant, the first foaming agent is cyclopentane, the toughening agent is acrylonitrile-butadiene-styrene copolymer, the second foaming agent is azodicarbonamide, the bridging agent is 1,4-di-tert-butylperoxyisopropylbenzene, and the lubricant is ammonium acylate.

[0026] The embodiment of the present invention also provides a method for preparing a bicycle seat cushion, which specifically comprises the following steps: S1. Batching: using a weighing device to measure the required weight portions of TPU, the first foaming agent, the stabilizer, PSF, the toughening agent and the antioxidant TPU 3D printing material raw material and the required weight portions of TPE, the second foaming agent, the bridging agent and the lubricant TPE supercritical foaming material raw material; S2, forming the upper pad: pour the TPU, the first foaming agent, the stabilizer, the PSF, the toughening agent and the antioxidant weighed in step S1 into a mixing and stirring device in sequence, and then blend them at a rotation speed of 300 r / min for 30 minutes to obtain a TPU 3D printing material, and then pour the TPU 3D printing material into a feed barrel of the 3D printing device, enter the modeling data program of the bicycle upper pad into the 3D printing device, and then start the 3D printing device, so that the 3D printing device prints and processes the bicycle upper pad according to the entered program; S3, forming the bottom pad: the TPE, the second foaming agent, the bridging agent and the lubricant weighed in step S1 are blended in a mixing device at a rotation speed of 400 r / min to obtain a mixed material, and then the mixed material is added to a twin-screw extruder and mixed evenly to obtain a secondary mixed material, and then the secondary mixed material is injected into a molding mold designed in advance according to the size of the bottom pad for foaming to obtain a bicycle bottom pad; S4, pressing treatment: the bicycle upper pad obtained in step S2 and the bicycle lower pad obtained in step S3 are passed through a pressing device, and a layer of adhesive is applied between the upper pad and the lower pad, and then the upper pad and the lower pad are pressed together to form a complete bicycle seat cushion.

[0027] In summary, the present invention can achieve a good elastic cushioning effect and wear-resistant effect by using a double-layer design for the bicycle seat, which well achieves the purpose of both ensuring people's riding comfort and enabling long-term wear-resistant use, greatly improving the wear resistance and elastic cushioning effect of the bicycle seat, avoiding discomfort caused by long-term riding, and long-term wear of the seat causing the seat to peel or crack, thereby greatly facilitating people's use.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bicycle seat cushion, characterized in that: The bicycle seat cushion comprises an upper pad and a lower pad, wherein the upper pad is made of TPU 3D printing material, and the lower pad is made of TPE supercritical foaming material, and the upper pad and the lower pad of the required shape are made by using the TPU 3D printing material and the TPE supercritical foaming material respectively, and then pressed together to form an upper pad and a lower pad of the required shape; The raw materials of the TPU 3D printing material include, by weight: 70-80 parts of TPU, 3-5 parts of a first foaming agent, 1-3 parts of a stabilizer, 5-10 parts of PSF, 1-3 parts of a toughening agent, and 0.5-1 parts of an antioxidant; The raw materials of the TPE supercritical foaming material include, by weight: 80-90 parts of TPE, 3-5 parts of a second foaming agent, 0.5-1 parts of a bridging agent and 1-3 parts of a lubricant.

2. A bicycle seat according to claim 1, characterized in that: The first foaming agent is one of chlorofluorocarbons, dichloromonofluoroethane or cyclopentane.

3. A bicycle seat cushion according to claim 1, characterized in that: The second blowing agent is azodicarbonamide.

4. A bicycle seat cushion according to claim 1, characterized in that: The toughening agent is one of styrene-butadiene thermoplastic elastomer, methyl methacrylate-butadiene-styrene terpolymer or acrylonitrile-butadiene-styrene copolymer.

5. The bicycle seat according to claim 1, characterized in that: The bridging agent is 1,4-di-tert-butylperoxyisopropylbenzene.

6. The bicycle seat according to claim 1, characterized in that: The lubricant is one of zinc stearate, polyethylene wax, EBS or ammonium acrylate.

7. A method for preparing the bicycle seat cushion according to any one of claims 1 to 6, characterized in that: The specific steps include: S1. Batching: using a weighing device to measure the required weight portions of TPU, the first foaming agent, the stabilizer, PSF, the toughening agent and the antioxidant TPU 3D printing material raw material and the required weight portions of TPE, the second foaming agent, the bridging agent and the lubricant TPE supercritical foaming material raw material; S2, forming the upper pad: pour the TPU, the first foaming agent, the stabilizer, the PSF, the toughening agent and the antioxidant weighed in step S1 into a mixing and stirring device in sequence, and then blend them at a rotation speed of 200-300 r / min for 20-30 min to obtain a TPU 3D printing material, and then pour the TPU 3D printing material into a feed barrel of the 3D printing device, enter the modeling data program of the bicycle upper pad into the 3D printing device, and then start the 3D printing device, so that the 3D printing device prints and processes the bicycle upper pad according to the entered program; S3, forming the bottom pad: the TPE, the second foaming agent, the bridging agent and the lubricant weighed in step S1 are blended in a mixing device at a rotation speed of 300-400 r / min to obtain a mixed material, and then the mixed material is added to a twin-screw extruder and mixed evenly to obtain a secondary mixed material, and then the secondary mixed material is injected into a molding mold designed in advance according to the size of the bottom pad for foaming to obtain a bicycle bottom pad; S4, pressing treatment: the bicycle upper pad obtained in step S2 and the bicycle lower pad obtained in step S3 are passed through a pressing device, and a layer of adhesive is applied between the upper pad and the lower pad, and then the upper pad and the lower pad are pressed together to form a complete bicycle seat cushion.

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