CN101658967A - Air gap sealed guide roller - Google Patents
Air gap sealed guide roller Download PDFInfo
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- CN101658967A CN101658967A CN200910026427A CN200910026427A CN101658967A CN 101658967 A CN101658967 A CN 101658967A CN 200910026427 A CN200910026427 A CN 200910026427A CN 200910026427 A CN200910026427 A CN 200910026427A CN 101658967 A CN101658967 A CN 101658967A
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- line wheel
- mandrel
- air gap
- bearing
- guide roller
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Abstract
The invention relates to an air circuit sealing mechanism of a guide roller bearing, in particular to an air gap sealed guide roller which works in a harsh environment and belongs to a rotary dynamicsealing system in the technical field of mechanical equipment. A thread wheel mounting base is sleeved in a mandrel hole of a thread wheel mandrel; the thread wheel mounting base is provided with an air inlet joint; an air inlet is arranged at the axes of the air inlet joint; an air circuit channel is arranged at the axes of the thread wheel mounting base; an air outlet is arranged at the bottom of the mandrel hole of a thread wheel mandrel; the air outlet is connected with a circular arc air gap formed between the thread wheel mandrel and a thread wheel sleeve; and the air inlet, the air circuit channel, the air outlet and the circuit arc air gap form a wind power air circuit. The invention is simple and convenient to manufacture and reliable to use and has great sealing property.
Description
Technical field
The present invention relates to a kind of gas circuit sealing mechanism of guide roller bearing of under adverse circumstances, working, belong to the rotary dynamic seal system of mechanical equipment technical field.
Background technology
Guide roller is commonly used on the linear cutting equipment of metal product and on-metallic article, and the linear cutting equipment of the nonmetallic materials height suitable to the stationarity running requirements of guide roller, therefore before the guide roller assembling, to conscientiously clean each affiliated part in the kerosene in cleaning, after treating that bearing and bearing block dry, low temperature grease is coated on its surface respectively, in assembling process, to guarantee lead wheel body running nimbly and freely, without any jam and degree of tightness periodically.Could guarantee the even running of guide roller and bearing like this, also be the prerequisite that guarantees machining accuracy.The operation principle of cutting be by the cutting piano wire constantly move back and forth the oiliness sand grains that drives in the cutting fluid with crystal, quartz, monocrystalline silicon, supra polymer resin etc. firmly, fragile material cutting resolves into sheet, the cutting accuracy height, work under bad environment, cause very quick-wearing of its bearing, the thing followed is that the wearing and tearing of wheel body have also aggravated, the presentation that can occur has: 1) bearing has clamping stagnation together with the lead wheel body, rotates dumb; 2) whole guide roller has beat to rock; The result is that the precision of product can promptly lower at short notice.
Sealing system mainly is divided into rotary dynamic seal, reciprocating dynamic seal and static seal.The sealing of wire cutting machine guide roller is the contactless rotary dynamic seal in the sealing classification.
The sealing of relevant this type of situation only depends on a centrifugal action to finish in the industry at present, as shown in Figure 3, make have only 200 hours the service life of bearing, and the replacing time that directly is sleeved on the polyurethane lead wheel body outside the bearing can only fix on 50～100 hours, and when changeing the line wheel body, some cutting fluids are also infiltrated the wearing and tearing that bearing quickens bearing easily, form vicious circle, and the situation of broken string often takes place.Not only make the continuity of work can not get ensureing, frequent replacing also can allow the operator time and effort consuming, and the consumption of spare part is surprisingly big, and the quality of main is product also and then is subjected to very big influence.Therefore the Seal Design of cutting machine guide roller will be present in the industry urgent problem.
Summary of the invention
In order to overcome the deficiency that above-mentioned guide roller exists, the invention provides a kind of air gap sealed guide roller.
The technical solution adopted for the present invention to solve the technical problems is: a kind of air gap sealed guide roller, have by line wheel mandrel, line wheel skirt cover, bearing, the line wheel assembly that line wheel body and bearing cover are formed, online axle center of taking turns mandrel is provided with the mandrel hole, line wheel core sleeve is contained in the line wheel skirt cover, the end of line wheel mandrel is stretched out line wheel skirt cover and is connected by bearing with the line wheel body, the wired mount pad of taking turns of suit in the online mandrel hole of taking turns mandrel, the online mount pad of taking turns is provided with inlet suction port, axle center at inlet suction port is provided with air inlet, online axle center of taking turns mount pad is provided with gas channels, online bottom of taking turns the mandrel hole of mandrel is provided with the gas outlet, the gas outlet is communicated with the circular arc air gap that forms between line wheel mandrel and the line wheel skirt cover, air inlet, gas channels, gas outlet and circular arc air gap form wind power gas circuit.Like this, have the compressed air of certain pressure to form wind power one at circular arc air gap place immediately, because that end of bearing chamber seals, wind power air-flow can only stop entering of cutting fluid along another direction, plays the sealing function to bearing.
Give vent to anger from wind power gas circuit in order to guarantee air-flow, guarantee the sealing property of guide roller, further: described bearing cover is wrapped in outward between the outside of bearing and the line wheel skirt cover and fits by cover plate fixed screw fixing seal, and making only can be from the semitight space that wind power gas circuit is given vent to anger inner formation of bearing cover.Usually structure is to link together by fixed screw between bearing cover, lead wheel body and line wheel skirt cover three, in guide roller body running process, can produce so on the one hand and rock, in addition on the one hand, because rocking of lead wheel body influences the air-tightness between the joint face.
In order to strengthen the sealing property between bearing cover and the line wheel skirt cover, further: the binding face at bearing cover and line wheel skirt cover is provided with sealing ring.
In order to improve wind power sealing property, further: form circular arc air gap place between described line wheel mandrel and the line wheel skirt cover and be provided with airtight step, make air-flow be subjected to certain resistance that passes through at airtight step place, air-flow has certain air pressure and enters into bearing cover inside to stop outside cutting fluid when overflowing by airtight step place is outwards diffusing.
Installation for the ease of line wheel mandrel and line wheel skirt cover, reduce the friction that produces simultaneously between the two as far as possible, guarantee the stationarity that the line wheel body rotates, more further: at the line wheel skirt cover opening with line wheel mandrel junction is extension mouth, also the be more convenient for formation of wind power sealing of this structure.
In order to guarantee the stability after the line wheel body is installed, one go on foot ground again: described line wheel body is sleeved on the bearing cover periphery, and the arranged outside of online wheel body has pressing plate, by line wheel body fixed screw the line wheel body is fixed between pressing plate and the bearing cover.
For the stationarity of the transmission that improves course of work middle (center) bearing, be both the wearability that improves bearing, further: described bearing is a dual bearing structure.
Beneficial effect of the present invention is mainly reflected in:
1) compact conformation of the present invention, processing technology is simple, does not need to change original installing space and size, only need be by the source of the gas on the machine.
2) low cost of manufacture of the present invention, the product percent of pass height.
3) body member of the present invention adopts carbon constructional quality steel, aluminium alloy, the processing of ceramic thread wheel body to combine, and uses reliable.
4) single cost of the present invention can be than increasing to some extent originally, but service life than prolonged 6 times, the replacement cost of bearing and line wheel body is lowered greatly, and invisible product quality lifting, human resources saving, the increase of work production capacity then are maximum bright spots of the present invention.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1: the air gap sealed line wheel construction of the present invention schematic diagram.
Fig. 2: the online flow schematic diagram of taking turns in the skirt cover of air-flow.
Fig. 3: common guide roller structural representation.
1. lines wheel mandrel, 2. lines wheel skirt overlaps 7. lines wheel mount pad, 8. inlet suction ports, 9. air inlets, 10. gas channels, 11. gas outlets, 3. bearings, 4. line wheel bodys, 5. bearing covers, 6. mandrel holes, 12. circular arc air gaps, 13. cover plate fixed screws, 14. sealing rings, 15. airtight step 16. pressing plates 17. line wheel body fixed screws among the figure
The specific embodiment
A kind of air gap sealed guide roller as shown in Figure 1, has the line wheel assembly of forming by line wheel mandrel 1, line wheel skirt cover 2, bearing 3, line wheel body 4 and bearing cover 5, online axle center of taking turns mandrel 1 is provided with mandrel hole 6, line wheel mandrel 1 suit is online takes turns in the skirt cover 2, the end of line wheel mandrel 1 is stretched out line wheel skirt cover 2 and is connected by bearing 3 with line wheel body 4, and bearing 3 is that dual bearing structure is to improve its wearability and smoothness of operation.By fixedly spiral shell 13 fixing seals applying of cover plate, be provided with sealing ring 14 between the outside that bearing cover 5 is outer to be wrapped in bearing 3 and the line wheel skirt cover 2 at binding face.Described line wheel body 4 is sleeved on bearing cover 5 peripheries, and the arranged outside of online wheel body 4 has pressing plate 16, by line wheel body fixed screw 17 line wheel body 4 is fixed between pressing plate 16 and the bearing cover 5.
The online mandrel hole 6 interior wired mount pads 7 of taking turns of suit of taking turns mandrel 1, the online mount pad 7 of taking turns is provided with inlet suction port 8, be provided with air inlet 9 in the axle center of inlet suction port 8, online axle center of taking turns mount pad 7 is provided with gas channels 10, online bottom of taking turns the mandrel hole 6 of mandrel 1 is provided with gas outlet 11, gas outlet 11 is communicated with the circular arc air gap 12 that forms between line wheel mandrel 1 and the line wheel skirt cover 2, and air inlet 9, gas channels 10, gas outlet 11 and circular arc air gap 12 form wind power gas circuit.Air is pressed into by air inlet 9, enter into gas outlet 11 by gas channels 10, because bearing cover 5 is tightly connected with line wheel skirt cover 2, so air-flow can only outwards discharge by circular arc air gap 12, under centrifugal action, air-flow is taken turns skirt along the line and is overlapped 2 inwalls and circumferentially discharge, and stops that cutting fluid enters, as shown in Figure 2.
In order to improve sealing property better, form circular arc air gap 12 places between described line wheel mandrel 1 and the line wheel skirt cover 2 and be provided with airtight step 15, overlapping 2 openings at the line wheel skirt with line wheel mandrel 1 junction is extension mouth.
Claims (7)
1. air gap sealed guide roller, have by line wheel mandrel (1), line wheel skirt cover (2), bearing (3), the line wheel assembly that line wheel body (4) and bearing cover (5) are formed, online axle center of taking turns mandrel (1) is provided with mandrel hole (6), the online wheel in the skirt cover (2) of line wheel mandrel (1) suit, the end of line wheel mandrel (1) is stretched out line wheel skirt cover (2) and is connected by bearing (3) with line wheel body (4), it is characterized in that: the online wired mount pad (7) of taking turns of the interior suit in mandrel hole (6) of taking turns mandrel (1), the online mount pad (7) of taking turns is provided with inlet suction port (8), be provided with air inlet (9) in the axle center of inlet suction port (8), online axle center of taking turns mount pad (7) is provided with gas channels (10), online bottom of taking turns the mandrel hole (6) of mandrel (1) is provided with gas outlet (11), gas outlet (11) is communicated with the circular arc air gap (12) that forms between line wheel mandrel (1) and the line wheel skirt cover (2), air inlet (9), gas channels (10), gas outlet (11) and circular arc air gap (12) form wind power gas circuit.
2. a kind of air gap sealed guide roller according to claim 1 is characterized in that: the outer outside and the line that is wrapped in bearing (3) of described bearing cover (5) taken turns between the skirt cover (2) by the applying of cover plate fixed screw (13) fixing seal.
3. a kind of air gap sealed guide roller according to claim 2 is characterized in that: the binding face of taking turns skirt cover (2) at bearing cover (5) and line is provided with sealing ring (14).
4. a kind of air gap sealed guide roller according to claim 1 is characterized in that: form circular arc air gap (12) between described line wheel mandrel (1) and the line wheel skirt cover (2) and locate to be provided with airtight step (15).
5. air gap sealed guide roller according to claim 1 is characterized in that: at line wheel skirt cover (2) opening with line wheel mandrel (1) junction is extension mouth.
6. a kind of air gap sealed guide roller according to claim 1, it is characterized in that: described line wheel body (4) is sleeved on bearing cover (5) periphery, the arranged outside of online wheel body (4) has pressing plate (16), by line wheel body fixed screw (17) line wheel body (4) is fixed between pressing plate (16) and the bearing cover (5).
7. a kind of air gap sealed guide roller according to claim 1 is characterized in that: described bearing (3) is a dual bearing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910026427A CN101658967A (en) | 2009-04-23 | 2009-04-23 | Air gap sealed guide roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910026427A CN101658967A (en) | 2009-04-23 | 2009-04-23 | Air gap sealed guide roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101658967A true CN101658967A (en) | 2010-03-03 |
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ID=41787336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910026427A Pending CN101658967A (en) | 2009-04-23 | 2009-04-23 | Air gap sealed guide roller |
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|---|---|
| CN (1) | CN101658967A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744794A (en) * | 2011-04-01 | 2012-10-24 | 江苏省惠山中等专业学校 | Double-piece independent wire guide wheel |
| CN102896706A (en) * | 2012-10-11 | 2013-01-30 | 西安隆基硅材料股份有限公司 | Guide wheel for multi-wire cutting |
| CN108069343A (en) * | 2018-01-23 | 2018-05-25 | 中国水利水电夹江水工机械有限公司 | A kind of underwater sediment prevention device and method of micro-pressure-difference |
-
2009
- 2009-04-23 CN CN200910026427A patent/CN101658967A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744794A (en) * | 2011-04-01 | 2012-10-24 | 江苏省惠山中等专业学校 | Double-piece independent wire guide wheel |
| CN102896706A (en) * | 2012-10-11 | 2013-01-30 | 西安隆基硅材料股份有限公司 | Guide wheel for multi-wire cutting |
| CN108069343A (en) * | 2018-01-23 | 2018-05-25 | 中国水利水电夹江水工机械有限公司 | A kind of underwater sediment prevention device and method of micro-pressure-difference |
| CN108069343B (en) * | 2018-01-23 | 2024-03-01 | 中国水利水电夹江水工机械有限公司 | Micro-pressure difference underwater silt prevention device and method |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100303 |