CN111761784A - Full-plastic caster and injection molding process thereof - Google Patents
Full-plastic caster and injection molding process thereof Download PDFInfo
- Publication number
- CN111761784A CN111761784A CN202010607264.9A CN202010607264A CN111761784A CN 111761784 A CN111761784 A CN 111761784A CN 202010607264 A CN202010607264 A CN 202010607264A CN 111761784 A CN111761784 A CN 111761784A
- Authority
- CN
- China
- Prior art keywords
- soft rubber
- bearing
- outer ring
- injection molding
- spoke plate
- Prior art date
- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
- B29C45/1618—The materials being injected at different moulding stations using an auxiliary treatment station, e.g. for cooling or ejecting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1671—Making multilayered or multicoloured articles with an insert
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0028—Construction of wheels; methods of assembling on axle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2310/00—Manufacturing methods
- B60B2310/20—Shaping
- B60B2310/204—Shaping by moulding, e.g. injection moulding, i.e. casting of plastics material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/10—Reduction of
- B60B2900/112—Costs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/30—Increase in
- B60B2900/321—Lifetime
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides an all-plastic truckle, belongs to the injection molding field, including bearing, radials and flexible glue outer lane, the radials cover is established at the bearing outer wall, the radials middle part set up with bearing assorted spacing recess, the spacing recess both ends integrated into one piece of radials has the screens protruding, flexible glue outer lane cover is established at the radials outer wall, flexible glue outer lane inner wall middle part integrated into one piece has the back-off protruding, radials outer wall integrated into one piece have with the protruding assorted swallow-tail form recess of back-off. The injection molding process for producing the all-plastic caster comprises the steps of firstly injecting the soft rubber outer ring, ensuring the formation of the back-off structure, then injecting the hard plastic in the middle to form the wheel disc, wrapping the soft rubber outer ring and the bearing to form a hard and soft structure, so that the wheel disc and the soft rubber outer ring are connected more tightly, the caster is silent and wear-resistant when in use, and the service life is longer.
Description
Technical Field
The invention relates to the field of injection molding parts, in particular to an all-plastic caster and provides an injection molding process of the all-plastic caster.
Background
The caster is a common structure for bearing heavy objects to roll and advance in modern industry, and is widely used in various industries and fields of engineering, equipment, logistics, warehousing, medical treatment, furniture, carts, bags and the like. The truckle can receive frictional force for a long time when bearing the weight and advancing, and need face various ground condition in the use, the truckle bears the performance of wearing and tearing very examination, the spoilage of ordinary truckle is very high, and service life is short, in order to improve the wearability, many producers can wrap up one deck rubber circle or other outside the truckle now and glue the system outer lane, but the current does not have axial limit structure between system outer lane and the truckle of gluing, connect firmly inadequately, it is not hard up easily after long-time the use, drop, how to make the connection of gluing system outer lane and truckle inseparabler, increase life, and simultaneously, simplify the production steps, and reduce production cost, become further improved direction.
Disclosure of Invention
The invention aims to solve the technical problem of providing the all-plastic caster with good wear resistance and correspondingly providing the injection molding process of the all-plastic caster with simplified process steps and accurate production size.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an all-plastic truckle, includes bearing, radials and flexible glue outer lane, the radials cover is established at the bearing outer wall, radials middle part set up with bearing assorted spacing recess, the spacing recess both ends integrated into one piece of radials has the screens protruding, flexible glue outer lane cover is established at the radials outer wall, flexible glue outer lane inner wall middle part integrated into one piece has the back-off protruding, radials outer wall integrated into one piece have with the protruding assorted swallow-tail form recess of back-off.
Furthermore, a plurality of reinforcing ribs are integrally formed on the wheel spoke plate.
An injection molding process based on the matching design of the all-plastic caster comprises the following steps:
the method comprises the following steps: firstly, manufacturing a die matched with the shape of the soft rubber outer ring and a die matched with the shape of the wheel spoke plate;
step two: installing a mould matched with the shape of the soft rubber outer ring in an injection molding machine, starting the injection molding machine, and injecting the soft rubber outer ring;
step three: after the soft rubber outer ring is cooled and formed, placing the bearing at the center of the inner side of the soft rubber outer ring, and fixing the positions of the bearing and the soft rubber outer ring;
step four: and melting the granules by the injection molding machine, and injecting the melted granules into a space between the soft rubber outer ring and the bearing to form the spoke plate.
Further, the fourth step is followed by a fifth step: and (5) after the wheel spoke plate is cooled and formed, carrying out service life and size inspection.
Further, the granules for manufacturing the wheel disk in the fourth step comprise PA66 and additives, wherein the additives are one or more of antimony trioxide, PA stabilizer, beta-crystal form nucleating agent and fiber additive.
Compared with the prior art, the invention provides the all-plastic caster and the injection molding process of the all-plastic caster, wherein the injection molding process utilizes the arrangement of the inverted buckle structure and the production steps of firstly injecting the soft rubber outer ring and then injecting the spoke plate, so that the connection between the soft rubber outer ring and the spoke plate is tighter, the dimensional precision of the spoke plate is higher, the sleeving step of the wear-resistant layer of the outer ring is reduced, and the production process is optimized; in addition, the clamping protrusions at the two ends of the spoke plate limiting groove can keep the positions of the bearing and the spoke plate unchanged, and the limiting structure is more attached by utilizing the process sequence of firstly placing the bearing and then injecting the spoke plate; the all-plastic caster wheel manufactured by the injection molding process is used for a long time, the soft rubber outer ring cannot fall off or loosen, the caster wheel is more silent, stable and wear-resistant in the operation process, the service life is long, the injection molding process steps are simplified, the production links are few, the cost is low, and the all-plastic caster wheel has good popularization and application values.
Drawings
FIG. 1 is a perspective view of the all plastic caster of the present invention.
Fig. 2 is a front view of the all plastic caster of the present invention.
FIG. 3 is a cross-sectional view of the A-A side of the all plastic caster of the present invention.
Fig. 4 is an exploded view of the all plastic caster of the present invention.
Reference numerals: 1. a bearing; 2. a wheel disc; 21. a limiting groove; 22. a clamping bulge; 23. a dovetail-shaped groove; 24. reinforcing ribs; 3. a soft rubber outer ring; 31. the inverted bulge is buckled;
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 4, the all-plastic caster sequentially comprises a bearing 1, a spoke plate 2 and a soft rubber outer ring 3 from inside to outside, wherein the spoke plate 2 is sleeved on the outer wall of the bearing 1, a limit groove 21 matched with the bearing 1 is formed in the middle of the spoke plate 2, clamping protrusions 22 are integrally formed at two ends of the limit groove 21 of the spoke plate 2 to prevent the bearing 1 from being separated from the spoke plate 2, the soft rubber outer ring 3 is sleeved on the outer wall of the spoke plate 2, inverted protrusions 31 are integrally formed in the middle of the inner wall of the soft rubber outer ring 3, namely, two sides of each inverted protrusion 31 are inverted grooves, and the width of one end, away from the soft rubber outer ring 3, of each inverted protrusion 31 is larger than the width of the inverted protrusion 31, close to the; the outer wall of the wheel spoke 2 is integrally formed with a dovetail-shaped groove 23 matched with the inverted protrusion 31, and the dovetail-shaped groove 23 wraps the inverted protrusion 31, so that the soft rubber outer ring 3 cannot fall off, loosen or shift from the wheel spoke 2 under the action of friction force in long-time use.
In addition, a plurality of reinforcing ribs 24 with different lengths are integrally formed on the front surface and the rear surface of the wheel spoke 2, so that the supporting force of the wheel spoke 2 is stronger.
An injection molding process of the all-plastic caster, namely an injection molding process for producing the all-plastic caster, comprises the following steps:
the method comprises the following steps: firstly, manufacturing a die matched with the shape of the soft rubber outer ring and a die matched with the shape of the wheel spoke plate;
step two: installing a mould matched with the shape of the soft rubber outer ring at a corresponding position of an injection molding machine, starting the injection molding machine, and firstly injecting the soft rubber outer ring to form an inverted buckle bulge;
step three: after the soft rubber outer ring is cooled and formed, a bearing is placed at the center of the inner side of the soft rubber outer ring, namely the position of the finally formed bearing of the all-plastic caster wheel; fixing the position of the bearing and the soft rubber outer ring through a related structure in the injection molding machine, so that the relative position of the fixed bearing and the soft rubber outer ring is kept unchanged;
step four: adding granules for manufacturing the wheel disc into a hopper of an injection molding machine, starting the injection molding machine, melting the granules by the injection molding machine, injecting the melted granules into a closed space formed by the soft rubber outer ring, the bearing and a mould of the wheel disc, and performing injection molding to form the wheel disc, so that the middle hard plastic wraps the inverted protrusion of the soft rubber outer ring and the bearing to form a hard-wrapping soft structure, and simultaneously forming other structures such as reinforcing ribs and the like;
step five: and after the wheel spoke plate is cooled and formed, carrying out service life inspection and size inspection on the caster.
In addition, the granules for manufacturing the wheel disk in the fourth step are prepared by taking PA66 as a main material, adding additives and then performing injection molding, wherein the additives are antimony trioxide, a PA stabilizer, a beta-crystal form nucleating agent and a fiber additive. Specifically, the granules consist of the following components in parts by mass: PA 66: 80% and additives: the additive is 16% of antimony trioxide, 24% of PA stabilizer, 24% of beta-crystal form nucleating agent and 36% of fiber additive, the fiber additive can be carbon fiber or glass fiber, so that the antimony trioxide endows the wheel disk with flame retardant performance, the PA stabilizer reduces the potential yellowing hazard of the wheel disk, the beta-crystal form nucleating agent improves the impact resistance and the heat distortion resistance of the wheel disk, and the fiber additive improves the hardness of the wheel disk. Pellets of other ingredients may also be used.
In step four, the granule that melts can be under the bellied shape of back-off to and the restraint of the mould of spoke board, and the spoke board of back injection moulding can laminate the protruding swallow-tail form recess that forms of back-off, thereby wraps the back-off arch, forms hard soft structure of package, makes the position of flexible glue outer lane for the spoke board can not remove, can be spacing each other between the structure, and the structure is more stable.
Finally, it should be noted that: the above examples are merely illustrative of the technical solutions of the present invention, and not limitative thereof; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. An all-plastic caster is characterized in that: including bearing (1), spoke plate (2) and flexible glue outer lane (3), bearing (1) outer wall is established to spoke plate (2) cover, spoke plate (2) middle part seted up with bearing (1) assorted spacing recess (21), the both ends integrated into one piece of spacing recess (21) has the screens protruding (22), flexible glue outer lane (3) cover is established at spoke plate (2) outer wall, flexible glue outer lane (3) inner wall middle part integrated into one piece has back-off arch (31), spoke plate (2) outer wall integrated into one piece have with back-off arch (31) assorted dovetail form recess (23).
2. An all-plastic castor according to claim 1, wherein said web (2) is integrally formed with a plurality of ribs (24).
3. An injection moulding process for an all plastic castor according to any one of claims 1-2, including the steps of:
the method comprises the following steps: firstly, manufacturing a die matched with the shape of the soft rubber outer ring and a die matched with the shape of the wheel spoke plate;
step two: installing a mould matched with the shape of the soft rubber outer ring in an injection molding machine, starting the injection molding machine, and injecting the soft rubber outer ring;
step three: after the soft rubber outer ring is cooled and formed, placing the bearing at the center of the inner side of the soft rubber outer ring, and fixing the positions of the bearing and the soft rubber outer ring;
step four: and melting the granules by the injection molding machine, and injecting the melted granules into a space between the soft rubber outer ring and the bearing to form the spoke plate.
4. An injection molding process for an all-plastic caster as claimed in claim 3, wherein said step four is followed by the step of
Step five: and (5) after the wheel spoke plate is cooled and formed, carrying out service life and size inspection.
5. The injection molding process of the all-plastic caster wheel as claimed in claim 3, wherein the pellet material for making the wheel disk in step four comprises PA66 and additive, wherein the additive is one or more of antimony trioxide, PA stabilizer, beta-crystal form nucleating agent and fiber additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010607264.9A CN111761784A (en) | 2020-06-29 | 2020-06-29 | Full-plastic caster and injection molding process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010607264.9A CN111761784A (en) | 2020-06-29 | 2020-06-29 | Full-plastic caster and injection molding process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111761784A true CN111761784A (en) | 2020-10-13 |
Family
ID=72723316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010607264.9A Pending CN111761784A (en) | 2020-06-29 | 2020-06-29 | Full-plastic caster and injection molding process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111761784A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117644729A (en) * | 2024-01-30 | 2024-03-05 | 珠海恒烨精密科技有限公司 | Cutter structure with prolonged service life and printer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0310780A1 (en) * | 1987-09-26 | 1989-04-12 | TENTE-ROLLEN GmbH & Co. | Wheel, especially a castor |
| DE4126938A1 (en) * | 1991-08-10 | 1993-02-11 | Schaeffler Waelzlager Kg | Caster with body injection moulded around bearing - uses plastics material channels between caster running surface and hub |
| CN2422159Y (en) * | 2000-03-28 | 2001-03-07 | 刘金成 | Castor with hollow hub |
| GB0113152D0 (en) * | 2001-05-31 | 2001-07-25 | Colson Castors Ltd | Wheels for transportation vehicles |
| CN102642268A (en) * | 2012-04-27 | 2012-08-22 | 浙江万立汽配有限公司 | Method for manufacturing escalator roller |
| EP2712743A1 (en) * | 2012-09-19 | 2014-04-02 | Mando Corporation | Motor housing integrated-type spoke for electric bicycle, manufacturing method thereof, wheel assembly having the same and manufacturing method thereof |
| CN204726150U (en) * | 2015-06-08 | 2015-10-28 | 中山市奔点五金机械有限公司 | A kind of castor |
| CN210363195U (en) * | 2019-07-31 | 2020-04-21 | 中山诚盈塑胶科技有限公司 | Light wear-resistant wheel of baby carrier |
-
2020
- 2020-06-29 CN CN202010607264.9A patent/CN111761784A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0310780A1 (en) * | 1987-09-26 | 1989-04-12 | TENTE-ROLLEN GmbH & Co. | Wheel, especially a castor |
| DE4126938A1 (en) * | 1991-08-10 | 1993-02-11 | Schaeffler Waelzlager Kg | Caster with body injection moulded around bearing - uses plastics material channels between caster running surface and hub |
| CN2422159Y (en) * | 2000-03-28 | 2001-03-07 | 刘金成 | Castor with hollow hub |
| GB0113152D0 (en) * | 2001-05-31 | 2001-07-25 | Colson Castors Ltd | Wheels for transportation vehicles |
| CN102642268A (en) * | 2012-04-27 | 2012-08-22 | 浙江万立汽配有限公司 | Method for manufacturing escalator roller |
| EP2712743A1 (en) * | 2012-09-19 | 2014-04-02 | Mando Corporation | Motor housing integrated-type spoke for electric bicycle, manufacturing method thereof, wheel assembly having the same and manufacturing method thereof |
| CN204726150U (en) * | 2015-06-08 | 2015-10-28 | 中山市奔点五金机械有限公司 | A kind of castor |
| CN210363195U (en) * | 2019-07-31 | 2020-04-21 | 中山诚盈塑胶科技有限公司 | Light wear-resistant wheel of baby carrier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117644729A (en) * | 2024-01-30 | 2024-03-05 | 珠海恒烨精密科技有限公司 | Cutter structure with prolonged service life and printer |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201013 |