CN101470054B - Epoxy resin encapsulated standard resistance drawing stick and its production method - Google Patents
Epoxy resin encapsulated standard resistance drawing stick and its production method Download PDFInfo
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- CN101470054B CN101470054B CN200710302333A CN200710302333A CN101470054B CN 101470054 B CN101470054 B CN 101470054B CN 200710302333 A CN200710302333 A CN 200710302333A CN 200710302333 A CN200710302333 A CN 200710302333A CN 101470054 B CN101470054 B CN 101470054B
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Abstract
The invention discloses a standard resistance absorption rod and a manufacture method thereof. The resistance absorption rod comprises a plurality of glass capillaries of high length-diameter ratio, filled by epoxy resins, wherein the capillaries are uniformly distributed on one circumference concentric to the axle center of the resistance absorption rod. The manufacture method comprises: vertically fixing the glass capillaries whose two ends are sealed into a cylinder chamber formed by an upper die sleeve, a lower die sleeve and two half cylindrical bushes coated with release agents on inner surfaces, via the fine holes correspondingly distributed in the upper and the lower die sleeves; heating epoxy resins to 90 to 100 DEG C; adding curing agent; degassing in a vacuum furnace; filling the epoxy reins into the chambers containing the glass capillaries; curing and naturally cooling to room temperature; demoulding and taking out blanks; rounding, finishing, cutting and cleaning. The resistance absorption rod has simple manufacture process, is hard to be broken and has good consistence.
Description
Technical field
The present invention relates to a kind of standard resistance drawing stick and manufacturing approach thereof, belong to the standard transfer device that field of tobacco is used to measure the calibration of filter tip resistance to suction.
Technical background
In the tobacco manufacturing industry, its filter-tip quality is very important.The technical indicator that characterizes the filter tip quality is many, but resistance to suction is one of its of paramount importance technical indicator, and manufacturer must guarantee that its filter-tip resistance to suction is stabilized in a certain scope, and various countries all formulate standard with the resistance to suction of cigarette filter.Because the slight change of measuring principle, method etc., and the long-term use of same the equipment drift that causes the resistance to suction value to be measured, regularly or aperiodically calibrate its resistance to suction value and just seem extremely important.Consider that the resistance to suction of measuring cigarette filter has a scope, so its low resistance to suction value of calibration, high resistance to suction value and some spots between the two are necessary.By the external diameter glass bar identical with the cigarette filter diameter, portion's several micropores that evenly distribute within it, micropore is penetrating in the two ends of rod, and the quantity of micropore, aperture and length have just been confirmed its resistance to suction value, promptly when keeping a normal flow at the one of which end.At present, the standard resistance drawing stick that useful glass is made on the market, diameter are 8mm; Inner 10 micropores that the aperture is 0.4～0.6mm that evenly distribute; Length is generally at 120mm and 140mm, the standard resistance drawing stick done of the micropore of 0.4mm wherein, and its resistance to suction value is greatly about about 5000Pa; And the micropore standard resistance drawing stick of 0.6mm, its resistance to suction value is then about 1000Pa.But it is bigger that this standard resistance drawing stick manufactures difficulty, and accidentally, fall and just fall on the ground fragmentation easily, and color is more single, and then technical difficulty is bigger like the different apertures that alternately distribute (resistance to suction value in the middle of considering to calibrate).The inventor has only seen this product from user's hand; But the technical information of the manufacturer of this product and manufacturing approach thereof not; Have no way of to the relative merits of its product itself carry out objective, comprehensively estimate and the evaluation of manufacture difficulty; Only product and the manufacturing approach thereof with itself and inventor intuitively compares, and do not get rid of some one-sidedness that possibly exist.
Summary of the invention
The technical matters that the present invention will solve is, through using the epoxy resin dosing technology, with regularly arranged glass capillary hermetic embedding in one; Through solidify, technologies such as round as a ball, cutting, cleaning, produce the standard resistance drawing stick of predetermined hole diameter, quantity, length, external diameter is identical through choosing, the different glass capillaries of internal diameter; Can produce the standard resistance drawing stick of different resistance to suction values, and in same barred body, arrange alternately that external diameter is identical, the different glass capillaries of internal diameter; Realize the intermediate value point of resistance to suction; Through choosing different epoxy resin and hardening agent, perhaps change solidification temperature, can also obtain bright product.
For solving the problems of the technologies described above; Technical thought to be solved by this invention is: utilization at a certain temperature, the glass capillary of the high length-diameter ratio ratio of its internal diameter (length with) is when one of which end input normal flow; Form stable pressure reduction at the other end, the pressure reduction at two ends promptly is defined as the resistance to suction value.For enlarging measurement range; The glass capillary of several (generally getting 8～12) regulation length-diameter ratio is evenly arranged on the circumference, except that these spaces that constitute by capillary inner diameter, all the other equal airtight sealings; Encapsulant is an epoxy resin, is similar to the embedding of electronic devices and components.Specifically, constituting technical scheme of the present invention is:
(1) with spirit lamp or other flame back impermeability sealing-in is melted at its two ends to the glass capillary of predetermined hole diameter, wall thickness and length, any crackle is not allowed to have been permitted in whole glass tube and sealing-in position;
(2) cleaning die, coating release agent, assembly jig and slotting glass capillary
(a) clean two halves cylindrical die and upper and lower die sleeve with absolute ethyl alcohol, till cleaning up;
(b) coating release agent: with scrubbing brush or glass bar with release agent (graphite emulsion or silicone grease) coated in two halves cylindrical die inside surface; Use glass bar (suitable) under on the two halves cylindrical die inside surface, to come back rotation several times again with the mould internal diameter; Release agent is adhered to from the teeth outwards uniform and smoothly; Scrape off the unnecessary release agent in mould seam seamed edge place with tweezers at last, protruding release agent lines mustn't occur;
(c) assembly jig and insert row glass capillary: buckle well two halves cylindrical die and Upper Die-sleeve, make it to become one, fix mould with clip; Lower die-sleeve is put into support lower end pilot hole; The two halves cylindrical cast iron mould that assembles is placed on the support, and makes the gap of leaving 10mm between its lower end and the lower die-sleeve, adjust upper and lower die sleeve; Make the strict aligning of its micropore; Insert row glass capillary is in the direction of the clock guaranteed to be parallel to each other between the glass capillary and perpendicular to both ends of the surface, and guarantees that the partial-length that spills at Upper Die-sleeve is suitable.After insert row is intact, with lower die-sleeve and the fastening of sleeve die lower end.In this attention: the glass capillary surface can not speckle with release agent, can not crooked and dislocation; Place, slit at the outside surface of two halves formwork for cylindrical columns splicing also should evenly be coated with release agent, prevents to leak when postorder from pouring epoxy resin.
(3) pour preceding preparation
The above-mentioned mould that contains glass capillary that assembles is placed in the baking oven, and oven temperature toasts funnel and support thereof simultaneously in 90 ℃～100 ℃ scopes.
(4) configuration of epoxy resin and exhaust
The configuration proportion of epoxy resin and hardening agent is chosen suitable ratio in the epoxy resin mixed liquor.Earlier epoxy resin liquid is poured in the beaker, after evenly stirring, be heated to 90 ℃～100 ℃; After treating that it becomes clear solution fully, add hardening agent, after stirring; Place exhaust in the suitable vacuum drying oven of temperature and said temperature, examine exhaust process, treat that colloid liquid level bubble drains fully after; Take out beaker rapidly, get into following operation immediately;
(5) baking oven is cut off the power supply; Slowly pour in the cavity that constitutes by two semicolumns and upper and lower die sleeve and glass capillary through funnel the epoxy resin solution that sequences gas in the step (4); Time was controlled at 6～12 minutes, for the ease of observing the liquid level situation, can near the Upper Die-sleeve end face, open an aperture; Just spill like epoxy resin liquid, promptly stop to inject at this.And in the center pit of Upper Die-sleeve, take out funnel.Shut oven door, be heating and curing, according to the color that will choose, confirm solidification temperature, set time was at 4 hours; Solidify the back outage and naturally cool to room temperature, after the taking-up demoulding, obtain being evenly distributed with the standard resistance drawing stick blank of glass capillary by the inside of epoxy resin embedding.
(6) blank cold working: wipe the tree lace of the convexity on the blank side off with blade, in V-type cast iron groove, use 240 respectively
#, 303
#, 304
#Emery is implemented round as a ball.Be nominally the standard resistance drawing stick of O (8.00 ± 0.01) mm for external diameter, its concrete technology is: with 240
#Emery is rolled into 8.05mm, cleans V-type cast iron groove and blank; Change 303
#Emery is rolled into 8.02mm, cleans V-type cast iron groove and blank; Change 304
#Emery is rolled into 8.01～7.99mm, when satisfying dimensional requirement, preferably pass through simple polishing after, can clearly see the rod in each glass capillary.After outside dimension is rolled into the position, cut out Len req (like 120mm or 140mm) with diamond custting machine.
(7) clean, pack: the standard resistance drawing stick of last well cutting is successively used gasoline, alcohol wash; And the inner cleaning of kapillary to be a end at rod put the latex rubber pipette bulb; The other end successively inserts respectively and squeezes repeatedly in gasoline and the alcohol that rubber pipette bulb implements, till cleaning up.Pack with the glassware wrapping paper and to get final product.
Can produce the standard resistance drawing stick suitable fully by above-mentioned processing step with vitreum; Be that diameter is that 8mm, length are evenly to distribute 8～12 apertures at 0.4～0.6mm micropore along the shaft section direction in the barred body of 100～160mm; Micropore is penetrating in the two ends of rod; Each micropore internal diameter along its length is identical, and inside surface is smooth, and these micropores are to be realized by the internal diameter of glass capillary; Barred body is then by forming airtight sealing between epoxy resin and the glass capillary after the epoxy resin embedding.
This standard resistance drawing stick by the epoxy resin potting requires error that the internal diameter of glass capillary goes up along its length in ± 5%, and the ovality on the arbitrary axis cross section is less than 0.02mm.
According to the requirement of different resistance to suction values, said glass capillary can be chosen different inner diameters under the identical condition of external diameter, and makes their periodic arrangement on same circumference.
According to the needs of resistance to suction value about 5000Pa, following proposal meets the demands: promptly said internal diameter capillaceous is 0.4mm, and ten centers capillaceous are distributed in the circumference of Φ (4～7) mm, and length is 120mm, and all the other form for the epoxy resin potting.
According to the needs of resistance to suction value about 1000Pa, following proposal meets the demands: promptly said internal diameter capillaceous is 0.6mm, and ten centers capillaceous are distributed in the circumference of Φ (4～7) mm, and length is 140mm, and all the other form for the epoxy resin potting.
According to the needs of resistance to suction value about 2200Pa; Following proposal meets the demands: promptly said internal diameter capillaceous is respectively 0.4mm and 0.6mm, respectively gets five and alternately arranges, and their center is distributed in the circumference of Φ (4～7) mm; Length is 120mm, and all the other form for the epoxy resin potting.
According to the needs of resistance to suction value about 3600～3800Pa; Following proposal meets the demands: promptly said internal diameter capillaceous is respectively 0.4mm and 0.45mm; Respectively getting five kapillaries alternately arranges; Their center is distributed in the circumference of Φ (4～7) mm, and length is 120mm, and all the other form for the epoxy resin potting.
Choosing of above-mentioned epoxy resin and hardening agent, and proportioning, the delivery temperature scope when being heated into liquid and different solidification temperatures cause the variation of different colours, is listed below:
Epoxy resin and hardening agent type: DYD128 type resin and dimethyl benzylamine; WSR6101 resin and triethanolamine; Can also be the epoxy resin that is used for embedding of other type and corresponding with it hardening agent thereof.The principle that the proportioning of epoxy resin and hardening agent is chosen is to take all factors into consideration at the aspects such as soft durometer of finished product, and on the low side like both ratios, set time is longer, and product is softer, and higher then hardness is higher, fragility is bigger, and the finished product quality is had certain influence.For DYD128 type resin, the ratio of itself and hardening agent dimethyl benzylamine should be at 12: 1～9: 1, and for WSR6101 resin and triethanolamine hardening agent, then ratio is 15: 1～8: 1.The selection principle of delivery temperature is: minimum temperature be with under vacuum condition thoroughly exhaust be prerequisite, and maximum temperature is unsuitable too high, otherwise solidifies too fast and possibly cause color to be difficult to control.For DYD128 type resin, delivery temperature scope: 92 ℃～98 ℃, can also further narrow down to 94 ℃～96 ℃; And for the WSR6101 resin, delivery temperature scope then: 90 ℃～100 ℃.For the selection of solidification temperature, be Embedding Material with DYD128 type resin and dimethyl benzylamine, when solidification temperature during at 75 ℃～80 ℃, product is the water white transparency body; When solidification temperature during at 90 ℃～120 ℃, product is faint yellow; With WSR6101 resin and triethanolamine is Embedding Material, and when solidification temperature during at 90 ℃～120 ℃, product is an aubergine.
Above-mentioned mould can be used the alloy aluminum material, also can use steel mold, can also be other material, as long as can anti-150 ℃ of long-term disposal, and indeformable getting final product.And release agent can be chosen aquadag or silicone grease.
The standard resistance drawing stick that the epoxy resin dosing technology that the present invention adopted is made; Technology is simple; With low cost, and obtained the calibration effect same with all-glass standard resistance drawing stick, and also color can be adjusted according to manufacturing process; Less demanding to equipment etc., be specially adapted to the small serial production of the little standard transfer device of output.
Description of drawings
Fig. 1 is the synoptic diagram of standard resistance drawing stick described in the invention.
Fig. 2 a, 2b are respectively Upper Die-sleeve vertical view and the shaft section figure that makes standard resistance drawing stick according to the invention.
Fig. 3 a, 3b are respectively lower die-sleeve vertical view and the shaft section figure that makes standard resistance drawing stick according to the invention.
Fig. 4 a, 4b are respectively the front elevation and the vertical view of the semicolumn mould of making standard resistance drawing stick according to the invention.
Fig. 5 is the synoptic diagram of the mould that assembles.
Embodiment
In order accurately to understand the present invention, combine accompanying drawing and preferred embodiment thereof that the present invention is done further statement at present.
First preferred embodiment of the present invention is that to make physical dimension as shown in Figure 1 be that the length of Φ 8mm is the standard resistance drawing stick 1 of 120mm; Its inner evenly distributed ten glass capillaries 2, its internal diameter is 0.40mm, it is that the diameter at center is on the 4mm cylinder that these centers capillaceous are uniformly distributed in the resistance drawing stick axle center; Remainder filling epoxy resin 3; Its making step is: it is that 0.75～0.80mm, length are ten of the glass capillaries of 150～160mm that internal diameter 0.4mm, external diameter are got in (1), requires error that the internal diameter of glass capillary goes up along its length in scholar 5%, and the ovality on the arbitrary axis cross section is less than 0.02mm; Surfaces externally and internally is smooth transparent; Have no the optics flaw, with spirit lamp or other flame the back sealing-in is melted at its two ends, any crackle is not allowed to have been permitted in whole glass tube and sealing-in position; (2) cleaning die: with absolute ethyl alcohol clean upper and lower die sleeve (see respectively Fig. 2 b 4, Fig. 3 b 8) and two halves cylindrical cast iron mould (Fig. 4 10), guarantee during cleaning that the endoporus 5,9 of upper and lower die sleeve is unobstructed, clean, till cleaning up; (3) be coated with silicone grease: the inside surface 11 of two half-cylindrical No. 45 steel mold 10 is coated silicone grease; Use glass bar (about 7.0mm) will go up down back rotation several times then; Make silicone grease uniform and smooth attached on the surface 11; Scrape off the unnecessary silicone grease in above-mentioned mould seam seamed edge place with tweezers at last, protruding silicone grease lines mustn't occur; (4) assembly jig and slotting glass capillary: buckle well half-cylindrical mould 10 and Upper Die-sleeve 4, make it to become one (shown in the top of Fig. 5) fixes mould with clip 12; Lower die-sleeve 8 is put into support lower end pilot hole, the two halves cylindrical die 10 that assembles is placed on the support, and make the gap of leaving 10mm between its lower end and the lower die-sleeve 8; Adjust upper and lower die sleeve (4,8), make its micropore (5; 9) the strict aligning; The insert row glass capillary 2 in the direction of the clock, guarantee to be parallel to each other between the glass capillary 2 and perpendicular to both ends of the surface, and guarantee that the partial-length that spills at Upper Die-sleeve is suitable.The two halves cylindrical die that assembles is placed on the support, after insert row is intact, lower die-sleeve 8 and sleeve die 10 lower end fastenings.In this attention: glass capillary 2 surfaces can not speckle with silicone grease, can not crooked and dislocation; Place, slit at the outside surface of two halves cylindrical die splicing should evenly be coated with silicone grease, prevents to leak when postorder from pouring epoxy resin; (5) pour preceding preparation: the above-mentioned mould that contains glass capillary 2 that assembles is placed in the baking oven, and oven temperature toasts funnel 14 and support 15 thereof simultaneously at 95 ℃; (6) configuration of epoxy resin and exhaust: the ratio of epoxy resin and hardening agent is 10: 1 in the epoxy resin mixed liquor, as gets 40 gram DYD128S resin liquid and pour in the beaker, after evenly stirring; Be heated to 95 ℃, treat that it becomes clear solution fully after, add 4 gram dimethyl benzylamines; After stirring, place exhaust in the suitable vacuum drying oven of temperature and said temperature, examine exhaust process; After treating that glue face bubble drains fully, take out beaker rapidly, get into following operation immediately; (7) baking oven is cut off the power supply; Slowly pour in the cavity that constitutes by two half-cylindrical and upper and lower die sleeves and glass capillary through funnel 14 epoxy resin solution that sequences gas in the step (6); Time was controlled at 6～12 minutes, for the ease of observing the liquid level situation, can consider near the Upper Die-sleeve end face, to open an aperture 7; Just spill like epoxy liquid, promptly stop to inject at this.And center pit 6 interior take out of funnel 14 from Upper Die-sleeve; (7) shut oven door, be heating and curing, 80 ℃ of solidification temperatures, 4 hours set times; Solidify the back outage and naturally cool to room temperature, after the taking-up demoulding, obtain being evenly distributed with glass capillary standard resistance drawing stick blank by the water white inside of epoxy resin embedding; (8) cold working of blank: wipe the tree lace of the convexity on the blank side off with blade, in V-type cast iron groove, use 240 respectively
#, 303
#, 304
#Emery is implemented round as a ball.Be nominally O (8.00 ± 0.01) mm standard resistance drawing stick for external diameter, its concrete technology is: with 240
#Emery is rolled into 8.05mm, cleans V-type cast iron groove and blank; Change 303
#Emery is rolled into 8.02mm, cleans V-type cast iron groove and blank; Change 304
#Emery is rolled into 8.01～7.99mm, through after polishing simply, can clearly see each glass capillary in the rod simultaneously again.After outside dimension is rolled into the position, cut out Len req (120mm) with diamond custting machine; (9) clean, pack: the standard resistance drawing stick of last well cutting is successively used gasoline, alcohol wash; And the inner cleaning of kapillary to be a end at rod put the latex rubber pipette bulb; The other end successively inserts and squeezes repeatedly in gasoline and the alcohol that rubber pipette bulb implements, till cleaning up.Pack with the glassware wrapping paper and to get final product.
Second preferred embodiment of the present invention is that to make physical dimension as shown in Figure 1 be that the length of Φ 8mm is the standard resistance drawing stick 1 of 140mm; Its inner evenly distributed ten glass capillaries 2 that internal diameter is 0.60mm; It is that central diameter is on the 6mm cylinder that these centers capillaceous are uniformly distributed in the resistance drawing stick axle center; Remainder filling epoxy resin 3, its manufacture craft only are that to change the glass capillary in first preferred embodiment into internal diameter be that 0.60mm, external diameter are that 0.75～0.80mm, length are that the glass capillary of 170～190mm gets final product, and other processing step is identical; Cut into 140mm at last, clean the back test package and get final product.
The 3rd preferred embodiment of the present invention is that to make physical dimension as shown in Figure 1 be that the length of Φ 8mm is the standard resistance drawing stick 1 of 120mm; Its inner evenly distributed ten glass capillaries 2; The internal diameter of these ten glass capillaries is respectively 0.40mm and 0.60mm; Alternately being arranged in the resistance drawing stick axle center is that the center of circle, diameter are on the 5mm cylinder; Remainder filling epoxy resin 3, its manufacture craft only are that to change internal diameter into be that 0.40mm, external diameter are that 0.75～0.80mm, length are that the glass capillary of 150～170mm gets final product other five of the glass capillary in second preferred embodiment, and other processing step is identical.
The 4th preferred embodiment of the present invention is that to make physical dimension as shown in Figure 1 be that the length of Φ 8mm is the standard resistance drawing stick 1 of 120mm; Its inner evenly distributed ten glass capillaries 2; The internal diameter of these ten glass capillaries is respectively 0.40mm and 0.45mm; Alternately being arranged in the resistance drawing stick axle center is that the center of circle, diameter are on the 6.5mm cylinder; Remainder filling epoxy resin 3, its manufacture craft only are that to change internal diameter into be that 0.45mm, external diameter are that 0.75～0.80mm, length are that the glass capillary of 150～160mm gets final product other five of the glass capillary in first preferred embodiment, and other processing step is identical.
In the above-described embodiments, can be according to the size of concrete resistance to suction value, the internal diameter of capillary glass to be chosen greater or lesser, the radical of arrangement is at 8～12, and the length that is cut can be at 100～160mm; The material of mould therefor can be No. 45 steel or hard aluminium, or is other anti-150 ℃ long-time indeformable other material; Release agent also can be chosen aquadag etc.; Epoxy resin also can use the WSR6101 resin, and corresponding hardening agent is a triethanolamine, or the epoxy resin that is used for embedding of other type and corresponding with it hardening agent thereof; Through optimization formula and delivery temperature, realize process lowest optimization, as for the DYD128S/ dimethyl benzylamine; Both ratios were at 12: 1～9: 1; Then in 92 ℃～98 ℃ scopes, delivery temperature can also further narrow down to 92 ℃～98 ℃ to delivery temperature, and for the WSR6101/ triethanolamine; Both ratios were at 15: 1～8: 1, and the delivery temperature scope is: 90 ℃～100 ℃.
More what is interesting is: the epoxy resin of different model, select corresponding hardening agent, the color of the standard resistance drawing stick of producing is different; Even and if the epoxy resin of same model uses the hardening agent of same ratio, different solidification temperatures; Also can cause change in color; Such as in first preferred embodiment, when solidification temperature during at 75 ℃～80 ℃, product is the water white transparency body; When solidification temperature during at 90 ℃～120 ℃, product is faint yellow; And for the WSR6101/ triethanolamine, when solidification temperature during at 90 ℃～120 ℃, product is an aubergine.
Certainly; The method of the invention is not limited to above-mentioned four kinds of manufacture crafts about standard resistance drawing stick, regardless of the glass capillary microwell array that constitutes with which kind of structure, as long as constitute the capillary array that is similar to glass capillary microwell array of the present invention or other material formation; The middle filling with epoxy resin or similar material; And produce similar products like with similar manufacture craft, as long as adopt one of technical scheme of the present invention or all, all belong within protection scope of the present invention.
Claims (14)
1. standard resistance drawing stick; Be one external diameter be 8mm, length be in the barred body of 100～160mm along 8～12 apertures that evenly distribute on the concentric circumference in xsect and axle center at 0.4～0.6mm micropore, micropore is penetrating in the two ends of rod, each micropore internal diameter along its length is identical; And inside surface is smooth; It is characterized in that: said micropore is to be realized by the internal diameter of glass capillary, and barred body is then by forming airtight sealing between epoxy resin and the glass capillary after the epoxy resin embedding.
2. standard resistance drawing stick according to claim 1 is characterized in that: the error that the internal diameter of said glass capillary is gone up along its length is in ± 5%, and the ovality on the xsect is less than 0.02mm arbitrarily.
3. standard resistance drawing stick according to claim 1 and 2 is characterized in that: said glass capillary can be chosen the different inner diameters combination, and make their periodic arrangement on same circumference under the identical condition of external diameter.
4. standard resistance drawing stick according to claim 1 is characterized in that: the internal diameter of said glass capillary is 0.4mm, and the center of ten glass capillaries is distributed in the circumference of Φ (4～7) mm, and length is 120mm, and all the other form for the epoxy resin potting.
5. standard resistance drawing stick according to claim 1 is characterized in that: the internal diameter of said glass capillary is 0.6mm, and the center of ten glass capillaries is distributed in the circumference of Φ (4～7) mm, and length is 140mm, and all the other form for the epoxy resin potting.
6. standard resistance drawing stick according to claim 3; It is characterized in that: the internal diameter of said glass capillary is respectively 0.4mm and 0.6mm; Respectively getting five glass capillaries alternately arranges; The center of ten glass capillaries is distributed in the circumference of Φ (4～7) mm, and length is 120mm, and all the other form for the epoxy resin potting.
7. standard resistance drawing stick according to claim 3; It is characterized in that: the internal diameter of said glass capillary is respectively 0.4mm and 0.45mm; Respectively getting five glass capillaries alternately arranges; The center of ten glass capillaries is distributed in the circumference of Φ (4～7) mm, and length is 120mm, and all the other form for the epoxy resin potting.
8. the manufacturing approach of standard resistance drawing stick as claimed in claim 1 comprises the steps:
(1) end socket: choose the glass capillary of required internal diameter, the length of intercepting is than the long 30～50mm of final finished, and is behind the flame sealing two ends, subsequent use;
(2) cleaning die, coating release agent: clean two halves cylindrical sleeve mould and upper and lower die sleeve with absolute ethyl alcohol, till cleaning up; Be coated with the inside surface of two halves cylindrical sleeve mould with release agent then; Rotate and move vertically with the diameter glass bar suitable with sleeve diameter; To guarantee that release agent adheres in its surface uniform and smoothly, scrape off the unnecessary release agent in two halves cylindrical sleeve mould seam seamed edge place at last;
(3) assembly jig and insert row glass capillary: buckle well two halves cylindrical sleeve mould and reach the Upper Die-sleeve of confirming size, quantity and the distribution thereof in hole in advance, make it to become one, fix two halves cylindrical sleeve mould with clip; Lower die-sleeve is put into support lower end pilot hole, the two halves cylindrical sleeve mould that assembles is placed on the support, and makes the gap of leaving 10mm between its lower end and the lower die-sleeve; Adjust upper and lower die sleeve; Make that its micropore is strict to be aimed at, insert row glass capillary is in the direction of the clock guaranteed to be parallel to each other between the glass capillary and perpendicular to both ends of the surface; After insert row is intact; With lower die-sleeve and the lower end fastening of half-cylindrical sleeve die, in this attention: the glass capillary surface can not speckle with release agent, can not crooked and dislocation; Place, slit on the surface that two halves cylindrical sleeve mould splices should evenly be coated with release agent, prevents to leak when postorder from pouring epoxy resin;
(4) baking dies, preparation epoxy resin and exhaust: the above-mentioned mould that contains glass capillary that assembles is placed in the baking oven, and oven temperature toasts funnel and support thereof simultaneously in 90 ℃～100 ℃ scopes; The ratio of epoxy resin and hardening agent is 15: 1～8: 1 in the epoxy resin mixed liquor, earlier epoxy resin is poured in the beaker, after evenly stirring; Be heated to 90 ℃～100 ℃, treat that it becomes clear solution fully after, add hardening agent; After stirring, placing temperature is exhaust in 90～100 ℃ the vacuum drying oven, examines exhaust process; After treating that the liquid level bubble drains fully, take out beaker rapidly, get into following operation immediately;
(5) baking oven is cut off the power supply; Slowly pour the epoxy resin solution that sequences gas in the step (4) in the cavity that is made up of two semicolumns and upper and lower die sleeve and glass capillary through funnel, the time was controlled at 6～12 minutes, for the ease of observing the liquid level situation; Near the Upper Die-sleeve end face, open an aperture; Just spill like epoxy resin solution, promptly stop to inject, and in the center pit of Upper Die-sleeve, take out funnel at this; Shut oven door, be heating and curing then, according to the color that will choose, confirm solidification temperature, set time was at 3～4 hours; Solidify the back outage and naturally cool to room temperature, after the taking-up demoulding, obtain being evenly distributed with the standard resistance drawing stick blank of glass capillary by the inside of epoxy resin embedding;
(6) cold working of blank: wipe the tree lace of the convexity on the blank side off with blade, in V-type cast iron groove, use 240 respectively
#, 303
#, 304
#Emery is implemented round as a ball, finally satisfies dimensional requirement, after simple polishing, can clearly see each glass capillary in the rod simultaneously, after outside dimension is rolled into the position, cuts out Len req with diamond custting machine;
(7) clean, pack: the standard resistance drawing stick of last well cutting is successively used gasoline, alcohol wash; And the inner cleaning of glass capillary to be a end at rod put the latex rubber pipette bulb; The other end successively inserts and squeezes rubber pipette bulb in gasoline, the alcohol repeatedly and implement, till clean; Pack with the glassware wrapping paper and to get final product.
9. according to the manufacturing approach of right 8 described standard resistance drawing sticks, it is characterized in that: the vacuum drying oven delivery temperature scope in the step (4) is 92 ℃～98 ℃, and the part by weight of epoxy resin and hardening agent is: 12: 1～9: 1.
10. according to the manufacturing approach of right 8 described standard resistance drawing sticks; It is characterized in that: the vacuum drying oven delivery temperature scope in the step (4) is 94 ℃～96 ℃; The part by weight of epoxy resin and hardening agent is: 10: 1, epoxy resin was chosen DYD128 type resin, and hardening agent is a dimethyl benzylamine.
11. the manufacturing approach according to right 8 described standard resistance drawing sticks is characterized in that: said half-cylindrical sleeve die is steel mold or alloy aluminum mould.
12. the manufacturing approach according to right 8 described standard resistance drawing sticks is characterized in that: said release agent is silicone grease or aquadag.
13. the manufacturing approach according to right 8 described standard resistance drawing sticks is characterized in that:, change the color of standard resistance drawing stick through changing the epoxy resin and the corresponding with it hardening agent of different model.
14. the manufacturing approach according to right 8 described standard resistance drawing sticks is characterized in that:,, change the color of standard resistance drawing stick through changing different solidification temperatures for epoxy resin of the same race and corresponding with it hardening agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710302333A CN101470054B (en) | 2007-12-26 | 2007-12-26 | Epoxy resin encapsulated standard resistance drawing stick and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710302333A CN101470054B (en) | 2007-12-26 | 2007-12-26 | Epoxy resin encapsulated standard resistance drawing stick and its production method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1257262A (en) * | 1968-03-28 | 1971-12-15 | ||
| CN1061330A (en) * | 1984-12-21 | 1992-05-27 | 美国J·R瑞诺兹烟草公司 | Smoking product |
| EP0409443B1 (en) * | 1989-07-20 | 1996-10-09 | INTERTABA S.p.A. | Control process and apparatus for the production of cigarette filters |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1257262A (en) * | 1968-03-28 | 1971-12-15 | ||
| CN1061330A (en) * | 1984-12-21 | 1992-05-27 | 美国J·R瑞诺兹烟草公司 | Smoking product |
| EP0409443B1 (en) * | 1989-07-20 | 1996-10-09 | INTERTABA S.p.A. | Control process and apparatus for the production of cigarette filters |
Non-Patent Citations (2)
| Title |
|---|
| 国家烟草专卖局.烟草专用吸阻标准棒检定规程.《JJG(烟草)15-200》.2002, * |
| 范黎等.卷烟吸阻和滤棒压降测量值与大气压力的关系.《烟草科技》.2004,(第12期),5-7. * |
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