CN109624180A - A kind of preparation method of composite foamed gum cover and the intake roller of printer - Google Patents
A kind of preparation method of composite foamed gum cover and the intake roller of printer Download PDFInfo
- Publication number
- CN109624180A CN109624180A CN201811604278.4A CN201811604278A CN109624180A CN 109624180 A CN109624180 A CN 109624180A CN 201811604278 A CN201811604278 A CN 201811604278A CN 109624180 A CN109624180 A CN 109624180A
- Authority
- CN
- China
- Prior art keywords
- gum cover
- raw material
- refining glue
- outer layer
- layer gum
- 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
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/06—Making multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/16—EPM, i.e. ethylene-propylene copolymers; EPDM, i.e. ethylene-propylene-diene copolymers; EPT, i.e. ethylene-propylene terpolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2409/00—Use of rubber derived from conjugated dienes, as filler
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
Abstract
The present invention relates to a kind of preparation method of composite foamed gum cover and the intake rollers of printer, and the preparation method is comprising steps of (1) produces outer layer gum cover；(2) will make internal layer gum cover foaming raw material refining glue and it is prefabricated be configured to it is barrel-shaped；(3) outer layer glue is covered in the first mold of merging, the foaming raw material of prefabricated forming is placed on the inside of outer layer gum cover；(4) heating makes foamed material foam, and vulcanizes sizing, is bonded outer layer gum cover and internal layer foamed material compound.Present invention employs completely new preparation processes, space between the foam filled full outer layer gum cover of foamed material and the first mold cores, is bonded outer layer gum cover and internal layer foamed material compound, bond degree is high, it is not likely to produce mass defect, the outer diameter and inner diameter dimensionally stable of entire composite foamed gum cover, internal layer and outer thickness uniformity, preparation method are simple, process flow is few, at low cost, quality is high, intake roller of the composite foamed gum cover of production particularly suitable for printer.
Description
Technical field
The present invention relates to the manufacturing technology field of composite foamed gum cover more particularly to a kind of preparation sides of composite foamed gum cover
The intake roller of method and printer.
Background technique
Now with the quickening of printer operating speed, there is new requirement to the paper feed efficiency and speed of paper feed component,
And the gum cover as printer paper feed system becomes improvement or improved emphasis naturally.As shown in Figure 1, paper feed system mainly includes
Roller 1 (Separation roller) and delay roller 2 (Retard roller) are separated, centre is paper paper feed path
(Paper path).Paper is brought between two rollers quickly by the rotation of separation roller 1 and is smoothly passed, we term it into
Paper, and paper feed effect with to separate 1 Facing material coefficient of friction (COF) of roller related, while being also combined with delay roller 2
It closes, delay 2 material of roller is soft, is easily deformed, and it is bigger that paper is in contact with it face, and paper is higher by efficiency and stationarity is better.
Macromolecular elastomer hardness adjustable extent is limited, and hardness accomplishes that shore A25 degree is difficult to drop again, and macromolecule foaming elastomer can
To accomplish very soft (hardness accomplish 5 degree of shore A all out of question), but simple foaming body can due to surface has hole dust accumulation, therefore,
Surface layer is closely knit, internal layer foaming structure gum cover can just fully meet needs.
Existing high molecular material foaming technique is quite mature, and the compound extruded hot-air of rubber material or microwave heating hair
Bubble technology is also being used there are many manufacturer, this provides possibility for outer layer dense layer, internal layer for the composite construction of foaming layer.But this
The composite structure product of method processing is difficult to accomplish outer diameter, internal diameter, outer layer dense layer thickness uniformity, it is difficult to meet and produce
Product demand.Ye You company first respectively makes outer layer dense layer and internal layer foaming layer, then grinds internal layer foaming layer, processing
It being assembled into outer layer to suitable fit dimension, then in foaming layer coating binder, this processing technology is more, and it is at high cost, and
There is poor attachment hidden danger of quality, therefore, completely new processing method just becomes very urgent.
Summary of the invention
The purpose of the present invention is to provide the preparation methods and printer of a kind of composite foamed gum cover at low cost, quality is high
Intake roller.
Technical solution provided by the invention are as follows: a kind of preparation method of composite foamed gum cover, the composite foamed gum cover packet
It includes the outer layer gum cover for dense layer and is the internal layer gum cover of foaming layer, comprising steps of
(1) outer layer gum cover is produced；
(2) will make internal layer gum cover foaming raw material refining glue and it is prefabricated be configured to it is barrel-shaped；
(3) outer layer glue is covered in the first mold of merging, the foaming raw material of prefabricated forming is placed on the inside of outer layer gum cover；
(4) heating makes foamed material foam, and vulcanizes sizing, is bonded outer layer gum cover and internal layer foamed material compound.
Including following sub-step wherein, in step (1):
(1.1) raw material of outer layer gum cover are subjected to refining glue；
(1.2) the second mold is placed in molding machine and is preheated；
(1.3) raw material are put into the second mold, and sulfidization molding.
Wherein, in step (2), the foaming raw material for making internal layer gum cover are cut into sheet, and wind two to three circles
It is formed barrel-shaped.
Wherein, in step (2), the foaming raw material for making internal layer gum cover are justified by extrusion shaping machine extrusion molding
Pipe, cuts into the barrel-shaped of appropriate length for round tube.
Wherein, between step (2) and (3), comprising the following steps: (2.5) the first mold is put into baking oven and preheated.
Wherein, the outer layer gum cover with a thickness of 0.8-2.0mm.
Wherein, the raw material of the outer layer gum cover and internal layer gum cover are EPDM, the process of outer layer gum cover raw material refining glue
Are as follows: EPDM raw material are put into mixer or open mill carries out refining glue, obtain A refining glue, drop temperature is 120-150 DEG C, is refined in A
Vulcanizing agent and promotor are added in glue, is kneaded again, obtains B refining glue, drop temperature is 80 ± 5 DEG C；Internal layer gum cover raw material
The process of refining glue are as follows: vulcanizing agent, promotor and foaming agent are added in above-mentioned A refining glue, is kneaded again, obtains B refining glue, discharges
Temperature is 75 ± 5 DEG C.
Wherein, the raw material of the outer layer gum cover and internal layer gum cover are NBR, the process of outer layer gum cover raw material refining glue
Are as follows: NBR raw material are put into mixer or open mill carries out refining glue, obtain A refining glue, drop temperature is 120-130 DEG C, is refined in A
Vulcanizing agent and promotor are added in glue, is kneaded again, obtains B refining glue, drop temperature is 80 ± 5 DEG C；Internal layer gum cover raw material
The process of refining glue are as follows: vulcanizing agent, promotor and foaming agent are added in above-mentioned A refining glue, is kneaded again, obtains B refining glue, discharges
Temperature is 70 ± 5 DEG C.
Wherein, the raw material of the outer layer gum cover and internal layer gum cover are silica gel, the process of outer layer gum cover raw material refining glue
Are as follows: silica gel raw material, vulcanizing agent and promotor investment open mill are subjected to refining glue, obtain B refining glue, drop temperature is 80 ± 5 DEG C；
The process of internal layer gum cover raw material refining glue are as follows: silica gel raw material, bridging agent and foaming agent investment open mill are subjected to refining glue, obtained
B refining glue, drop temperature are 70 ± 5 DEG C.
Another technical solution provided by the invention are as follows: a kind of intake roller of printer, including mandrel and according to above-mentioned system
The composite foamed gum cover of Preparation Method production, the composite foamed gum cover are set on mandrel.
The invention has the benefit that present invention employs completely new preparation processes, outer layer gum cover is first produced, can be made
It is very thin, such as 0.8-2mm or so, then will make the foaming raw material refining glue of internal layer gum cover and it is prefabricated be configured to it is barrel-shaped, then
The foaming raw material of outer layer gum cover and prefabricated forming are placed into the first mold and are heated, so that foamed material is foamed, and sulphur
Change sizing, the space between the foam filled full outer layer gum cover of foamed material and the first mold cores sends out outer layer gum cover and internal layer
Foam material bonding is compound, and the foaming and vulcanization of internal layer foamed material are disposably completed herein, outer layer gum cover and internal layer gum cover
It is chemical crosslinking bonding, bond degree is high, is not likely to produce mass defect, and the outer diameter of the type chamber control outer layer gum cover of the first mold is whole
The outer diameter and inner diameter dimensionally stable of a composite foamed gum cover, not needing grinding or a small amount of grinding can reach dimensional accuracy and wants
It asks, internal layer and outer thickness uniformity, preparation method is simple, and process flow is few, and at low cost, quality is high, the compound hair of production
Steep intake roller of the gum cover particularly suitable for printer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the paper feed system of printer；
Fig. 2 is the sectional view of the intake roller embodiment of printer of the present invention；
Fig. 3 is the first mold structure diagram of the present invention；
Fig. 4 is the structural schematic diagram of the foaming raw material embodiment one of prefabricated forming of the present invention；
Fig. 5 is the structural schematic diagram of the foaming raw material embodiment two of prefabricated forming of the present invention.
Wherein, 1, separation roller；2, postpone roller；3, outer layer gum cover；4, internal layer gum cover；5, mandrel；6, prefabricated forming
Foam raw material；7, the first mold；71, type chamber；72, type core.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The embodiment of intake roller as printer of the present invention, as shown in Fig. 2, including mandrel 5 and composite foamed glue
Set, the composite foamed gum cover are set on mandrel 5, and composite foamed gum cover includes the outer layer gum cover 3 for dense layer and is foaming
The internal layer gum cover 4 of layer, the preparation method of the composite foamed gum cover, as shown in Figures 3 to 5, comprising steps of
(1) outer layer gum cover 3 is produced；
(2) will make internal layer gum cover foaming raw material refining glue and it is prefabricated be configured to it is barrel-shaped；
(3) outer layer gum cover 3 is placed in the first mold 7, the foaming raw material 6 of prefabricated forming is placed on the inside of outer layer gum cover；
(4) heating makes foamed material foam, and vulcanizes sizing, is bonded outer layer gum cover and internal layer foamed material compound.
After step (4), it can also include step (5), composite foamed gum cover is taken out, grind, cutting obtains finished product.
But grinding it is not necessary to process, reasonable following process can be carried out according to actual needs.
Present invention employs completely new preparation processes, first produce outer layer gum cover, can be made very thin, such as 0.8-2mm left
The right side, then will make the foaming raw material refining glue of internal layer gum cover and it is prefabricated be configured to it is barrel-shaped, then outer layer gum cover and being prefabricated into
The foaming raw material of shape, which are placed into the first mold, to be heated, and so that foamed material is foamed, and vulcanize sizing, foamed material foaming
The space between full outer layer gum cover and the first mold cores 72 is filled, is bonded outer layer gum cover and internal layer foamed material compound, this
The foaming and vulcanization for locating internal layer foamed material are disposably completed, and outer layer gum cover is that chemical crosslinking is Nian Jie with internal layer gum cover, are glued
Degree of connecing is high, is not likely to produce mass defect, and the type chamber 71 of the first mold 7 controls the outer diameter of outer layer gum cover, entire composite foamed gum cover
Outer diameter and inner diameter dimensionally stable, do not need grinding or a small amount of grinding can reach dimension precision requirement, internal layer and outer thickness
Thin uniformity, preparation method is simple, and process flow is few, at low cost, and quality is high, and the composite foamed gum cover of production is particularly suitable for using
In the intake roller of printer.
Including following sub-step in the present embodiment, in step (1):
(1.1) raw material of outer layer gum cover are subjected to refining glue；
(1.2) the second mold is placed in molding machine and is preheated；
(1.3) raw material are put into the second mold, and sulfidization molding.The heating temperature of sulfidization molding is generally 150- herein
200 DEG C, heating time is generally 6-10 minutes.
In the present embodiment, in step (2), as shown in figure 4, the foaming raw material for making internal layer gum cover are cut into piece
Shape, and wind two to three circle formed it is barrel-shaped.Main cause is conveniently to be set on the mold core of the first mold, and guarantee that material is equal
It is even to be distributed in around mold core, it is simple to operation.
In another embodiment, in step (2), as shown in figure 5, the foaming raw material of internal layer gum cover will be made by squeezing
Molding machine extrusion molding is round tube out, and round tube is cut into the barrel-shaped of appropriate length, and shape is more regular, and distribution also can more
It is even, it is preferred embodiment, but need to put into extrusion equipment.
In the present embodiment, between step (2) and (3), comprising the following steps: (2.5) the first mold is put into baking oven
It is preheated.Need to preheat the first mold when making first composite foamed gum cover, in subsequent continuous production process, due to
Mold temperature be always maintained at it is higher, so being that unwanted repetition preheats this process.
In the present embodiment, the outer layer gum cover 3 with a thickness of 0.8-2.0mm.Since the outer layer gum cover of dense layer is main
Effect is to prevent dust accumulation, so thickness does not need too thick, preferred value 0.8-2.0mm, it is possible to reduce the dosage of material.
The raw material of the outer layer gum cover and internal layer gum cover can be varied, and raw material are different, corresponding technological parameter
Also it can be adjusted.Outer layer gum cover and internal layer gum cover can use identical raw material, can also use different raw material, when
When raw material are identical, the effect of compound sticking can be much better.The following are several raw material and technological parameter example.
Embodiment one: the raw material of the outer layer gum cover and internal layer gum cover are EPDM, outer layer gum cover raw material refining glue
Process are as follows: EPDM raw material are put into mixer or open mill carries out refining glue, obtain A refining glue, drop temperature is 120-150 DEG C,
Vulcanizing agent and promotor are added in A refining glue, is kneaded again, obtains B refining glue, drop temperature is 80 ± 5 DEG C；Internal layer gum cover is former
The process of material refining glue are as follows: vulcanizing agent, promotor and foaming agent are added in above-mentioned A refining glue, is kneaded again, obtains B refining glue,
Drop temperature is 75 ± 5 DEG C.The preheating temperature of first mold is 160-200 DEG C, and vulcanization heating time is 8-12 minutes.
If making prefabricated profiled foaming raw material by the way of extrusion molding, the extruded velocity of extrusion shaping machine is about
For 10 turns/MIN, extrusion mold segment temperature is 75 DEG C, squeezes out round tube, then round tube is cut into the outer layer gum cover being of convenient length.
Embodiment two: the raw material of the outer layer gum cover and internal layer gum cover are NBR, the mistake of outer layer gum cover raw material refining glue
Journey are as follows: NBR raw material are put into mixer or open mill carries out refining glue, obtain A refining glue, drop temperature is 120-130 DEG C, in A
Vulcanizing agent and promotor are added in refining glue, is kneaded again, obtains B refining glue, drop temperature is 80 ± 5 DEG C；Internal layer gum cover former material
Expect the process of refining glue are as follows: vulcanizing agent, promotor and foaming agent are added in above-mentioned A refining glue, is kneaded again, obtains B refining glue, out
Material temperature degree is 70 ± 5 DEG C.The preheating temperature of first mold is 150-180 DEG C, and vulcanization heating time is 8-12 minutes.
Embodiment three: the raw material of the outer layer gum cover and internal layer gum cover are silica gel, outer layer gum cover raw material refining glue
Process are as follows: silica gel raw material, vulcanizing agent and promotor investment open mill are subjected to refining glue, obtain B refining glue, drop temperature is 80 ±
5℃；The process of internal layer gum cover raw material refining glue are as follows: silica gel raw material, bridging agent and foaming agent investment open mill are subjected to refining glue,
B refining glue is obtained, drop temperature is 70 ± 5 DEG C.The preheating temperature of first mold is 160-200 DEG C, and vulcanization heating time is 8-12
Minute.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of preparation method of composite foamed gum cover, the composite foamed gum cover includes the outer layer gum cover for dense layer and is hair
The internal layer gum cover of alveolar layer, which is characterized in that comprising steps of
(1) outer layer gum cover is produced；
(2) will make internal layer gum cover foaming raw material refining glue and it is prefabricated be configured to it is barrel-shaped；
(3) outer layer glue is covered in the first mold of merging, the foaming raw material of prefabricated forming is placed on the inside of outer layer gum cover；
(4) heating makes foamed material foam, and vulcanizes sizing, is bonded outer layer gum cover and internal layer foamed material compound.
2. preparation method according to claim 1, which is characterized in that in step (1), including following sub-step:
(1.1) raw material of outer layer gum cover are subjected to refining glue；
(1.2) the second mold is placed in molding machine and is preheated；
(1.3) raw material are put into the second mold, and sulfidization molding.
3. preparation method according to claim 1, which is characterized in that in step (2), the foaming of internal layer gum cover will be made
Raw material are cut into sheet, and wind two to three circles formed it is barrel-shaped.
4. preparation method according to claim 1, which is characterized in that in step (2), the foaming of internal layer gum cover will be made
Raw material are round tube by extrusion shaping machine extrusion molding, and round tube is cut into the barrel-shaped of appropriate length.
5. preparation method according to claim 1, which is characterized in that between step (2) and (3), comprising the following steps:
(2.5) the first mold baking oven is put into preheat.
6. preparation method according to claim 1, which is characterized in that the outer layer gum cover with a thickness of 0.8-2.0mm.
7. preparation method according to claim 2, which is characterized in that the raw material of the outer layer gum cover and internal layer gum cover are equal
For EPDM, the process of outer layer gum cover raw material refining glue are as follows: EPDM raw material are put into mixer or open mill carries out refining glue, are obtained
A refining glue, drop temperature are 120-150 DEG C, and vulcanizing agent and promotor are added in A refining glue, is kneaded again, obtains B refining glue, out
Material temperature degree is 80 ± 5 DEG C；The process of internal layer gum cover raw material refining glue are as follows: vulcanizing agent, promotor and hair are added in above-mentioned A refining glue
Infusion is kneaded again, obtains B refining glue, and drop temperature is 75 ± 5 DEG C.
8. preparation method according to claim 2, which is characterized in that the raw material of the outer layer gum cover and internal layer gum cover are equal
For NBR, the process of outer layer gum cover raw material refining glue are as follows: NBR raw material are put into mixer or open mill carries out refining glue, obtain A
Refining glue, drop temperature are 120-130 DEG C, and vulcanizing agent and promotor are added in A refining glue, is kneaded again, obtains B refining glue, out
Material temperature degree is 80 ± 5 DEG C；The process of internal layer gum cover raw material refining glue are as follows: vulcanizing agent, promotor and hair are added in above-mentioned A refining glue
Infusion is kneaded again, obtains B refining glue, and drop temperature is 70 ± 5 DEG C.
9. preparation method according to claim 2, which is characterized in that the raw material of the outer layer gum cover and internal layer gum cover are equal
For silica gel, the process of outer layer gum cover raw material refining glue are as follows: refine silica gel raw material, vulcanizing agent and promotor investment open mill
Glue, obtains B refining glue, and drop temperature is 80 ± 5 DEG C；The process of internal layer gum cover raw material refining glue are as follows: by silica gel raw material, bridging agent
Refining glue is carried out with foaming agent investment open mill, obtains B refining glue, drop temperature is 70 ± 5 DEG C.
10. a kind of intake roller of printer, which is characterized in that including any one of mandrel and claim 1 to 9 preparation method
The composite foamed gum cover of production, the composite foamed gum cover are set on mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604278.4A CN109624180A (en) | 2018-12-26 | 2018-12-26 | A kind of preparation method of composite foamed gum cover and the intake roller of printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604278.4A CN109624180A (en) | 2018-12-26 | 2018-12-26 | A kind of preparation method of composite foamed gum cover and the intake roller of printer |
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| Publication Number | Publication Date |
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| CN109624180A true CN109624180A (en) | 2019-04-16 |
Family
ID=66077894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811604278.4A Pending CN109624180A (en) | 2018-12-26 | 2018-12-26 | A kind of preparation method of composite foamed gum cover and the intake roller of printer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111845129A (en) * | 2020-07-21 | 2020-10-30 | 平田精密器材(深圳)有限公司 | Be applied to anti-skidding drive shaft structure of color printer |
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| CN1690879A (en) * | 2004-04-29 | 2005-11-02 | 珠海天威飞马打印耗材有限公司 | Charge roller forming device |
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Application publication date: 20190416 |
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| RJ01 | Rejection of invention patent application after publication |