CN1490147A - Manufacture of step wheels - Google Patents
Manufacture of step wheels Download PDFInfo
- Publication number
- CN1490147A CN1490147A CNA031399487A CN03139948A CN1490147A CN 1490147 A CN1490147 A CN 1490147A CN A031399487 A CNA031399487 A CN A031399487A CN 03139948 A CN03139948 A CN 03139948A CN 1490147 A CN1490147 A CN 1490147A
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- China
- Prior art keywords
- sizing material
- manufacture method
- injection
- sulfuration
- feeding
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A technology for manufacturing the stepped wheel includes such steps as preparing raw materials, blasting sand on the mould, coating priming paint, proportioning, pugging, injection moulding while sulfurizing, and trimming. Its advantages are high productivity and high compactness.
Description
(1) technical field
The present invention relates to a kind of manufacture method of step wheel.
(2) background technology
Nineteen fifties occurs in the rubber industry field manufacturing industrial part with the shifting formwork method, and its technical process will divide for two steps walked, and belonged to double injection molding technology.At first sizing material is contained in the barrel, sizing material is pressed into die cavity, model is moved in the vulcanizer vulcanize again with pressure.The advantage of this technology is that rubber mobility is better, can make complex-shaped, the goods that density is higher.Its weak point is that compound blank is longer because of need preheating time, and cure time is also longer, thereby labour intensity is still excessive, and production efficiency is still not high.Take turns the sizing material of such high rigidity for the rubber step, if compound blank preheat temperature and time control are improper, precocity (being incipient scorch) phenomenon will take place, even make sizing material can't enter die cavity or enter die cavity also influences sizing material because of the incipient scorch phenomenon compactness, the physical and mechanical properties of sticking and property and sizing material between sizing material and metallic framework.
(3) summary of the invention
For addressing these problems, first must control temperature; Second must control the viscosity of rubber, and viscosity is big more, and living heat is big during by the notes pressing system, and temperature rise is fast, though favourable to high temperature fast cure, because of long between injecting, easy incipient scorch influences rubber mobility.For injection moulding is carried out smoothly, the flowability of sizing material, incipient scorch and curingprocess rate three must overall balances.The present invention overcomes the deficiencies in the prior art, and a kind of shot moulding process is provided, and forming process and sulfidation are integrated.Shot moulding is the improvement and the development of double injection molding.
The manufacture method of a kind of step wheel, or shot moulding process, realize by following step: preparation blank, hub sandblast, hub are coated with primer, batching, refining glue, once penetrate moulding (sulfuration), deburring and polishing, check.
As for:
Shot moulding (sulfuration) is: mould is directly installed on the board, and bolster can automatic shutter; Its process is: skeleton → immigration lower bolster → matched moulds → notes seat of feeding → die sinking → shift out lower bolster → put into preheating advances → inject → annotates seat to move back → vulcanize → (near vulcanizing on schedule when putting) metering feeding (to sulfurizing point) die sinking → shift out the hot skeleton of lower bolster → pushing-off product → put into.More than finished a sulfidization molding cycle, begun the cycle for the second time then, so moved in circles, gone round and begun again.
In injection molding process: sizing material enters machine barrel automatically because of the rotation of machine barrel inner screw, and advances material storage jar by screw rod, then by the plunger pressurization by nozzle with sizing material by force injection model directly vulcanize.Simultaneously, the machine barrel inner screw begins rotary feeding again automatically, sizing material is plastified, and new sizing material is shifted onto in the storage tank, and when storing enough nonrecoverable sizing materials in material storage jar, screw rod stops operating, and has got a shot ready;
Feeding is: sizing material adds from charge door, starts the screw rod rotary knob, and rotating screw bolt advances sizing material while plastifying, and clamp-ons in the injection barrel.
The notes seat advances: fall the injection barrel, the injection nozzle is contacted with the mold injects mouth.
Injection is: sizing material is in the plunger effect is issued to the airtight die cavity that nozzle enters preheating rapidly during injection.
Sulfuration is: sizing material is pressure-maintaining and heat-preservation in airtight die cavity.
Eject and be: promptly by push rod goods are ejected from mould after the die sinking.
The advantage of one-shot forming technique is: because operation is simple, the automaticity height, the molding sulfuration cycle is short, annotate in the pressure process, sizing material will experience plasticizing injection and two stages of hot-press vulcanization, one-shot forming is integrated forming process and sulfidation, flowability, incipient scorch and the curingprocess rate three overall balance of sizing material have been guaranteed, one-time formed key is under proper temperature, under the pressure condition, make sizing material obtain good rheological, the sulfuration while plastifying makes up-to-standard product in short as far as possible molding cycle.So, having alleviated tool, the sizing material temperature constantly raises, and when nozzle entered mould, the sizing material temperature had reduced the temperature difference between the goods ectonexine near curing temperature, has improved the compactness of goods, had guaranteed physical and mechanical properties and other quality requirements of product.
(3) specific embodiment
Embodiment 1
1, preparation blank: rubber is cut into 10cm
3Left and right sides blob of viscose; Use mandrel: 30 * 280 polish the metallic framework of hub; 2, hub sandblast: the sand jet outlet of the vertical sand-blasting machine of hub mucilage glue surface, sand is sprayed on the hub mucilage glue surface uniformly; 3, hub is coated with primer: select for use at room temperature, carry out in dustless dry environment, first linging gluing is coated with the face gluing then, should carry out preheating before the sulfuration of skeleton dress mould, and temperature is 80 ℃, and the time is 20 minutes; 4, batching: rubber mass is contained in the barrel; 5, refining glue: sizing material is plasticated from rubber mixing machine gear wheel end input tube seam, park after 8 hours and can use, the film after plasticating carries out mixing from rubber mixing machine gear wheel end input tube seam; 5, injection moulding (sulfuration): skeleton → immigration lower bolster → matched moulds → notes seat of feeding → die sinking → shift out lower bolster → put into preheating advances → inject → annotates seat to move back → vulcanize → (near vulcanizing on schedule when putting) metering feeding (to sulfurizing point) die sinking → shift out the hot skeleton of lower bolster → pushing-off product → put into.More than finish a sulfidization molding cycle, begin the cycle for the second time then, so move in circles, go round and begin again.6, deburring and polishing: repair limit, the hub skeleton mouth of a river with pocket knife; Roller and the rotation of emery wheel limit are milled to desired size; 7, check: check the roller surface fineness and the size of having ground, reject the rejecting that pore is arranged, rot glue, starved, skeleton has should rejecting of rust staining and burr.
Embodiment 2
1, preparation blank: rubber is cut into 10cm
3Left and right sides blob of viscose; Use mandrel: 30 * 400 polish the metallic framework of hub; 2, hub sandblast: the sand jet outlet of the vertical sand-blasting machine of hub mucilage glue surface, sand is sprayed on the hub mucilage glue surface uniformly; 3, hub is coated with primer: select for use at room temperature, carry out in dustless dry environment, first linging gluing is coated with the face gluing then, should carry out preheating before the sulfuration of skeleton dress mould, and temperature is 80 ℃, and the time is 20 minutes; 4, batching: rubber mass is contained in the barrel; 5, refining glue: sizing material is plasticated from rubber mixing machine gear wheel end input tube seam, park after 8 hours and can use, the film after plasticating carries out mixing from rubber mixing machine gear wheel end input tube seam; 5, injection moulding (sulfuration): skeleton → immigration lower bolster → matched moulds → notes seat of feeding → die sinking → shift out lower bolster → put into preheating advances → inject → annotates seat to move back → vulcanize → (near vulcanizing on schedule when putting) metering feeding (to sulfurizing point) die sinking → shift out the hot skeleton of lower bolster → pushing-off product → put into.More than finish a sulfidization molding cycle, begin the cycle for the second time then, so move in circles, go round and begin again.6, deburring and polishing: repair limit, the hub skeleton mouth of a river with pocket knife; Roller and the rotation of emery wheel limit are milled to desired size; 7, check: check the roller surface fineness and the size of having ground, reject the rejecting that pore is arranged, rot glue, starved, skeleton has should rejecting of rust staining and burr.
Claims (8)
1, a kind of manufacture method of step wheel, or shot moulding process, be coated with primer, batching, refining glue, injection moulding (sulfuration), deburring and steps such as polishing, check by preparation blank, hub sandblast, hub and form, it is characterized in that injection moulding (sulfuration) is shot moulding.
2, the manufacture method of step according to claim 1 wheel is characterized in that said injection moulding (sulfuration), and its mould is directly installed on the board, and bolster can automatic shutter; The one-shot forming process: skeleton → immigration lower bolster → matched moulds → notes seat of feeding → die sinking → shift out lower bolster → put into preheating advances → inject → annotates seat to move back → vulcanize → (near vulcanizing on schedule when putting) → metering feeding (to sulfurizing point) die sinking → shift out the hot skeleton of lower bolster → pushing-off product → put into.More than finish a sulfidization molding cycle, begin the cycle for the second time then, so move in circles, go round and begin again.
3, the manufacture method of step wheel according to claim 2, it is characterized in that step takes turns in the injection molding process: sizing material enters machine barrel automatically because of the rotation of machine barrel inner screw, and advance material storage jar by screw rod, then by the plunger pressurization by nozzle with sizing material by force injection model directly vulcanize.Simultaneously, the machine barrel inner screw begins rotary feeding again automatically, sizing material is plastified, and new sizing material is shifted onto in the material storage jar, and when storing enough nonrecoverable sizing materials in material storage jar, screw rod stops operating, and has got a shot ready;
4, the manufacture method of step wheel according to claim 2 is characterized in that feeding is that sizing material adds from charge door, starts screw rod and rotates, and rotating screw bolt advances sizing material while plastifying, and clamp-ons in the injection barrel.
5, the manufacture method of step wheel according to claim 2 is characterized in that it is to fall the injection barrel that the notes seat advances, and makes the injection nozzle contact with the mold injects mouth.
6, the manufacture method of step according to claim 2 wheel, it is characterized in that injecting is sizing material in the plunger effect is issued to the airtight die cavity that nozzle enters preheating rapidly.
7, the manufacture method of step wheel according to claim 2 is characterized in that sulfuration is sizing material pressure-maintaining and heat-preservation in airtight die cavity.
8, the manufacture method of step wheel according to claim 2 is characterized in that by push rod goods being ejected from mould after the die sinking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031399487A CN1490147A (en) | 2003-07-28 | 2003-07-28 | Manufacture of step wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031399487A CN1490147A (en) | 2003-07-28 | 2003-07-28 | Manufacture of step wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1490147A true CN1490147A (en) | 2004-04-21 |
Family
ID=34155164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031399487A Pending CN1490147A (en) | 2003-07-28 | 2003-07-28 | Manufacture of step wheels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1490147A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109318444A (en) * | 2018-11-20 | 2019-02-12 | 安徽世界村新材料有限公司 | A kind of high-strength high-elasticity dual density foam-in-mould rubber and plastic pallet and its manufacture craft |
-
2003
- 2003-07-28 CN CNA031399487A patent/CN1490147A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109318444A (en) * | 2018-11-20 | 2019-02-12 | 安徽世界村新材料有限公司 | A kind of high-strength high-elasticity dual density foam-in-mould rubber and plastic pallet and its manufacture craft |
| CN109318444B (en) * | 2018-11-20 | 2020-12-25 | 安徽创事福知识产权运营有限公司 | High-strength high-elasticity double-density in-mold foaming rubber plastic tray and manufacturing process thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |