CN103042641A - Manufacturing process for polyurethane barbell disk - Google Patents
Manufacturing process for polyurethane barbell disk Download PDFInfo
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- CN103042641A CN103042641A CN2012105548117A CN201210554811A CN103042641A CN 103042641 A CN103042641 A CN 103042641A CN 2012105548117 A CN2012105548117 A CN 2012105548117A CN 201210554811 A CN201210554811 A CN 201210554811A CN 103042641 A CN103042641 A CN 103042641A
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Abstract
The invention discloses a manufacturing process for a polyurethane (PU) barbell disk. The manufacturing process for the PU barbell disk is characterized by comprising the following steps: selecting dies according to the counterweight and the shapes of the produced barbell disks; adding a small amount of low-temperature PU materials into the upper die and the lower die respectively; after solidifying for 3 to 8 minutes, adding a first layer of steel particles into the upper die and the lower die respectively; quickly adding high-temperature PU materials; adding a second layer of steel particles; quickly adding the high-temperature PU materials; sequentially adding the materials until the upper die and the lower die are filled; after the surfaces of the cavities of the upper die and the lower die form a solidification layer, closing the upper die and the lower die; performing high-temperature vulcanization; after the product is formed, removing the dies; and cooling and trimming to obtain the finished product. The manufacturing process for the PU barbell disk has the advantages that the process is novel and simple to operate; casting is avoided; energy sources are saved; and the produced product is durable and has high safety.
Description
Technical field
The present invention relates to a kind of manufacture craft of disc, specifically, relate to a kind of manufacture craft of PU disc.
Background technology
Discs all in the body-building apparatus field are comprised of two large types at present, a class be by inner iron core appearance with gluing or spray paint or electroplate to soak and mould etc., two classes are full glue or full PU.But although inner with the iron core appearance with gluing spray paint or electroplates soak the disc volume of moulding little lift height freely land move in iron core can damage, and the iron core of disc inside is easy to produce soft or hard with the outer wrap place and resists mutually, make to produce between wrappage and iron core and become flexible, shortened the service life of disc.And the disc cost of full glue or full PU is high, volume is large, uses inconvenience.Therefore, need a kind of new technical scheme to solve above-mentioned technical problem.
Summary of the invention
The purpose of this invention is to provide that a kind of volume littlely, anti-falls, the manufacture craft of the PU disc of wear-resisting wiping.
The technical scheme that the present invention solves the problems of the technologies described above employing is:
A kind of manufacture craft of PU disc, counterweight and shape according to production disc are selected mould, then in mold and bed die, add respectively first a small amount of low temperature polyurethane material, after solidifying 3-8 minute, in mold and bed die, add respectively ground floor steel particle again, then add rapidly the high temperature polyurethane material, and then add again second layer steel particle, add rapidly again the high temperature polyurethane material, add successively until mold and bed die are filled full, after mold and surface, bed die shape chamber form one deck solidification layer, mold and bed die matched moulds, then carry out high temperature vulcanizedly, mould unloading after product shaping is through supercooling, finishing gets product.
The temperature of described low temperature polyurethane is 60-80 ℃.
The thickness of described low temperature polyurethane material in mold and bed die is respectively 2-5mm.
The weight ratio of total addition of described polyurethane and total addition of steel particle is 1:3-4.
Each addition of described steel particle is identical.
The temperature of described sulfuration is that 90-120 ℃, cure time are 30-50 minute.
The present invention adds the thick low temperature polyurethane of 2-5mm in the bottom of mold and bed die first, low temperature polyurethane solidifies rear formation integument, and then toward the interior gradation adding steel particle of mould and high temperature polyurethane, the high temperature polyurethane has the very strong viscosity of adhering to, itself and steel particle are combined closely, after the surface of polyurethane forms solidification layer, with mold and bed die matched moulds and send into carry out in the machine high temperature vulcanized, through after high temperature vulcanized, disc in mold and the bed die forms an integral body, disc outer wrapping layer of polyurethane after the moulding, inside is the mixed layer of steel particle and polyurethane, and inside and outside polyurethane is integrative-structure closely.Not only weight is up to standard for the disc that forms at last, and it also has that volume is little, elasticity strong, anti-ly fall, the characteristics such as wear-resisting.
Advantage of the present invention is: new technology, simple to operate, need not the casting, energy savings, the product of producing is durable in use, and is safe.
The specific embodiment
Embodiment 1
Present embodiment is take the disc of 10Kg as example
At first select supporting mould, then in mold and bed die, add respectively first 65 ℃, 0.6Kg(thickness is 5mm) polyurethane material, solidified 8 minutes, the steel particle that adds respectively again 1.875 Kg in mold and the bed die, then the high temperature polyurethane material that adds rapidly 0.3 Kg, and then the steel particle that adds again 1.875 Kg, the high temperature polyurethane material that adds rapidly again 0.35Kg, be that mould is full of, after mold and surface, bed die shape chamber formation solidification layer, then mold and bed die matched moulds vulcanized 40 minutes under 100 degrees centigrade high temperature, mould unloading after product shaping is through supercooling, finishing gets product.
Embodiment 2
Present embodiment is take the disc of 5Kg as example
At first select supporting mould, then in mold and bed die, add respectively first 60 ℃, 0.3Kg(thickness is 3mm) polyurethane material, solidified 5 minutes, the steel particle that adds respectively again 0.875 Kg in mold and the bed die, then the high temperature polyurethane material that adds rapidly 0.225Kg, and then the steel particle that adds again 0.875 Kg, the high temperature polyurethane material that adds rapidly again 0.225Kg, be that mould is full of, after mold and surface, bed die shape chamber formation solidification layer, then mold and bed die matched moulds vulcanized 50 minutes under 90 degrees centigrade high temperature, mould unloading after product shaping is through supercooling, finishing gets product.
Embodiment 3
Present embodiment is take the disc of 1.5Kg as example
At first select supporting mould, then adding respectively first 80 ℃, 0.0625Kg(thickness in mold and bed die is 2mm) polyurethane material, solidified 3 minutes, the steel particle that adds respectively again 1.125 Kg in mold and the bed die, then the high temperature polyurethane material that adds rapidly 0.25Kg, be that mould is full of, after mold and surface, bed die shape chamber formation solidification layer, mold and bed die matched moulds, then under 120 degrees centigrade high temperature, vulcanized 30 minutes, mould unloading after product shaping gets product through supercooling, finishing.
Claims (6)
1. the manufacture craft of a PU disc, it is characterized in that: counterweight and shape according to production disc are selected mould, then in mold and bed die, add respectively first a small amount of low temperature polyurethane material, after solidifying 3-8 minute, in mold and bed die, add respectively ground floor steel particle again, then add rapidly the high temperature polyurethane material, and then add again second layer steel particle, add rapidly again the high temperature polyurethane material, add successively until fill mold and bed die full, after mold and surface, bed die shape chamber formation one deck solidification layer, mold and bed die matched moulds, then carry out high temperature vulcanizedly, mould unloading after product shaping is through supercooling, finishing gets product.
2. the manufacture craft of a kind of PU disc according to claim 1, it is characterized in that: the temperature of described low temperature polyurethane is 60-80 ℃.
3. the manufacture craft of a kind of PU disc according to claim 1 and 2, it is characterized in that: the thickness of described low temperature polyurethane material in mold and bed die is respectively 2-5mm.
4. the manufacture craft of a kind of PU disc according to claim 1, it is characterized in that: the weight ratio of total addition of described polyurethane and total addition of steel particle is 1:3-4.
5. according to claim 1 or the manufacture craft of 4 described a kind of PU discs, it is characterized in that: each addition of described steel particle is identical.
6. the manufacture craft of a kind of PU disc according to claim 1 is characterized in that: the temperature of described sulfuration is that 90-120 ℃, cure time are 30-50 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554811.7A CN103042641B (en) | 2012-12-20 | 2012-12-20 | Manufacturing process for polyurethane barbell disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554811.7A CN103042641B (en) | 2012-12-20 | 2012-12-20 | Manufacturing process for polyurethane barbell disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103042641A true CN103042641A (en) | 2013-04-17 |
| CN103042641B CN103042641B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210554811.7A Active CN103042641B (en) | 2012-12-20 | 2012-12-20 | Manufacturing process for polyurethane barbell disk |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB579119A (en) * | 1941-08-21 | 1946-07-24 | Expanded Rubber Co Ltd | Improvements in or relating to the production of moulded articles of expanded rubber and like thermo-hardening materials |
| US3689343A (en) * | 1968-08-01 | 1972-09-05 | Lothar Elsner | Process for continuous manufacture of glass fiber reinforced modules of synthetic resin |
| JP2000017151A (en) * | 1998-04-28 | 2000-01-18 | Gifu Die & Mold Eng Co Ltd | Epoxy resin composition for jig and tool, and mold made of epoxy resin |
| CN201239465Y (en) * | 2008-08-11 | 2009-05-20 | 南通多邦体育用品有限公司 | Steel plastic loading trainer |
| CN102641573A (en) * | 2012-02-22 | 2012-08-22 | 南通力神国际贸易有限公司 | Exercise machine, dumbbell, barbell and strength of arm |
-
2012
- 2012-12-20 CN CN201210554811.7A patent/CN103042641B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB579119A (en) * | 1941-08-21 | 1946-07-24 | Expanded Rubber Co Ltd | Improvements in or relating to the production of moulded articles of expanded rubber and like thermo-hardening materials |
| US3689343A (en) * | 1968-08-01 | 1972-09-05 | Lothar Elsner | Process for continuous manufacture of glass fiber reinforced modules of synthetic resin |
| JP2000017151A (en) * | 1998-04-28 | 2000-01-18 | Gifu Die & Mold Eng Co Ltd | Epoxy resin composition for jig and tool, and mold made of epoxy resin |
| CN201239465Y (en) * | 2008-08-11 | 2009-05-20 | 南通多邦体育用品有限公司 | Steel plastic loading trainer |
| CN102641573A (en) * | 2012-02-22 | 2012-08-22 | 南通力神国际贸易有限公司 | Exercise machine, dumbbell, barbell and strength of arm |
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| Publication number | Publication date |
|---|---|
| CN103042641B (en) | 2014-12-24 |
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