CN107599253B - The production and processing technology of shower nozzle - Google Patents
The production and processing technology of shower nozzle Download PDFInfo
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- CN107599253B CN107599253B CN201710714309.0A CN201710714309A CN107599253B CN 107599253 B CN107599253 B CN 107599253B CN 201710714309 A CN201710714309 A CN 201710714309A CN 107599253 B CN107599253 B CN 107599253B
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Abstract
The invention discloses a kind of production and processing technologies of shower nozzle, its key points of the technical solution are that successively the following steps are included: raw material warehouse entry, thawing condenses again, idler wheel adds rush, sizing material cooling, blank, sulfidization molding, appearance trimming, post-cure processing and finished product shipment inspection；Stability when with the drawing stability for reinforcing shower nozzle and generating deformation quantity improves product to the ageing resistance and service performance of environment, improves product service life.
Description
Technical field
The present invention relates to showers to produce and process technical field, more specifically, it relates to which a kind of production of shower nozzle adds
Work technique.
Background technique
Raw rubber is heated to soften, and is hardened to the cold, embrittlement, not easily molded, is prone to wear, is soluble in the organic solvents such as gasoline,
Intramolecular has double bond, easily plays addition reaction, is easy aging.For improve rubber product performance, production on will to raw rubber into
A series of process of row chemically react raw rubber and vulcanizing agent in sizing material, make it by line style knot under certain condition
The macromolecules cross-linking of structure become space network macromolecular, make to make sizing material have high intensity, high resiliency, high abrasion,
Anticorrosive etc. excellent performance.This process is known as the vulcanization of rubber.Sulfidation is generally divided into four-stage, induction-is pre-
Sulphur-optimum cure-over cure.To realize this reaction, it is necessary to which external energy makes up to certain curing temperature, then allows rubber
Whole vulcanization reactions are completed in heat preservation in the sulfurizing temperature range.
The vulcanization of rubber can use various methods.Conventional method is that sizing material is vulcanized work using steam or Far-infrared Heating etc.
Skill.But due to heating temperature be by internally slowly thermal conductive outside medium it is right because gum material is High molecular polymer
Heating is very slow to inner layer its rate of heat transfer by surface of material for rubber, and most of the time consuming is allowing rubber to reach sulphur
Change in temperature；Microwave heating is entirely different with traditional heating mode, is to be penetrated into microwave energy inside heated medium directly
Whole heating is carried out, therefore is heated rapidly, it is energy-efficient, rubber vulcanization time is substantially reduced, keeps its heating uniformity more preferable,
Vulcanized quality is higher.
Rubber vulcanizing machine is also referred to as vulcanizing press, heat pressing forming machines, small-sized tablet press machine, automatic tableting press, is collection rubber sulphur
The function such as preheating needed for chemical industry skill, the automatic-discharging gas after feeding, pressure maintaining vulcanization, timing and alarming, automatic die sinking, product depanning
Energy Yu Yiti is the advanced hot-press equipment of various thermosetting plastics compression mouldings suitable for the vulcanization of various rubber products.
Since shower nozzle carries out desiccation by the immersion of water and after cutting off the water supply for a long time again, it is easy to make nozzle aging after long-time
Or rot, to influence the service life of shower entirety.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of production and processing work of shower nozzle
Skill has the function of improving its shower nozzle service life.
To achieve the above object, the present invention provides the following technical scheme that
A kind of production and processing technology of shower nozzle, comprising the following steps:
S1, raw material warehouse entry: silica gel receiving inspection；
S2, thawing condense again: sequentially adding rubber chemicals and colorant；
S3, idler wheel add rush: the block silica gel after condensation being flattened, and carries out vulcanization detection to it；
S4, sizing material are cooling；
S5, blank: plastic cement is sheared into strips after cooling to flattening, and is carried out material weight to strip silica gel material, expected that length is taken out
It tests；
S6, sulfidization molding: by rubber vulcanizing machine, by the strip silica gel material being placed on vulcanization forming machine working panel into
Row is hot-forming；
S7, appearance trimming: flash trimming is carried out to nozzle after molding；
S8, post-cure processing: by oven heat, high-temperature process is carried out to nozzle；
S9, finished product shipment inspection.
So set, receiving inspection is carried out by the silica gel to raw material warehouse entry first, convenient for the molding matter of power high product
The control of amount, then condensed again by melting, so that raw material is formed entirety, during which by rubber chemicals, facilitates to the fast rapid hardening of rubber
Knot, the generation for mitigating pernicious gas in reflow process and the stabilization personality for improving product after condensation, while being added colorant just
It is dyed in rubber, improves the service performance of rubber；By idler wheel plus rush, rubber is set to form the raw material of sheet, simultaneously
Whole compactedness after molding and bonding firmness are improved, while carrying out vulcanization detection, enters vulcanization convenient for the observation later period
Product quality when molding；After cooling, blank is carried out to the silica gel block of sheet, is allowed to form the rubber mass of strip, and to item
The material weight of shape silica gel material, material length are defined, whole control when convenient for forming to the later period；By rubber vulcanizing machine, make to put
Hot-forming in the strip silica gel material progress on vulcanization forming machine working panel, i.e., hot-forming is an entirety, completes shower
The hot-briquetting modeling process of nozzle；Followed by appearance is trimmed, i.e., carries out flash trimming to nozzle after molding, and it is whole to improve product
Quality and complete appearance；It carries out post-cure processing later to be heated at high temperature nozzle by oven heat, by its rubber
Harmful substance in glue is purged, at the same reinforce shower nozzle drawing stability and generate deformation quantity when stability,
Product is improved to the ageing resistance of environment, product service life is improved, finally carries out finished product shipment inspection, it is carried out finally
Check on, improve to product monitor, reduce the outflow of waste product.
Further setting: again in congealing step, rubber chemicals are N- cyclohexyl -2-[4-morpholinodithio time sulphonyl for the thawing
Amine, colorant are organic pigment.
So set, rubber chemicals inhibit to make Sulfur and rubber molecule continuation cross-linking reaction in use because of heat, and N-
Cyclohexyl -2-[4-morpholinodithio sulfenamide is suitable for natural gum and rubber polymer and tire etc. as excellent delayed action accelerator
Rubber product improves the stability of rubber after condensation, while organic pigment improves making for rubber convenient for dyeing to rubber mass
Use performance.
Further setting: in the sulfidization molding step, the temperature of hot pressing is 170 DEG C, and the time of hot pressing is 60s.
So set, being formed after melting rubber by the regelation of Liu Jia molding machine changing in temperature range, improving it
Working efficiency and product quality.
Further setting: further including having support plate, being slideably positioned in support plate in the sulfidization molding the step of
It placement plate and is set between support plate and placement plate and is in the limit assembly slided in support plate for limiting placement plate,
Offer several placing grooves in the support plate and placement plate in parallel, and support plate and placement plate it is concordant between when placing,
Placing groove in support plate communicates arrangement with the placing groove in placement plate.
So set, support plate and placement plate dislocation are arranged, at this time by the way that strip rubber mass to be placed under original state
The placing groove of placement plate, and bottom end can be such that strip rubber mass is in placement plate by support panel barrier；It is shaken hands by hand-held
Feeding auxiliary device is integrally lifted to the working panel of rubber vulcanizing machine, by by sliding support plate, and limit assembly limits
Support plate is in placement plate sliding scale, and when support plate and the placing groove in placement plate align, strip rubber mass loses support
It falls on working panel, later by making the placing groove mutual dislocation in support plate and placement plate, then general for support plate return
Its feeding auxiliary device is removed on working panel, having the function that disposably to unify feeding, improves rubber raw materials being placed in rubber
Efficiency on glue vulcanizer.
Further setting: the limit assembly includes the fixed column being fixedly installed in placement plate and is fixedly installed on
Fixed column end and diameter are greater than the limited block of limit column diameter, sliding slot are provided in the support plate, the fixed column is worn
In the sliding slot, and the end face of the limited block and support plate contradicts.
So set, by by sliding support plate, sliding in the sliding slot for being in fixed column in support plate, when fixed column with
When sliding slot contradicts, support plate aligns with the placing groove in placement plate at this time, has the function that convenient for blanking, at the same fixed column and
When the sliding slot other end is aligned, i.e., placing groove mutual dislocation in support plate and placement plate haved the function that convenient for charging, same to time limit
Position block diameter is greater than limit column diameter and reaches steady convenient for being clamped in support plate in placement plate by limited post and limited block
The effect of Dingan County's dress.
Further setting: location hole is provided on the working panel of the rubber vulcanizing machine, the limited block is plugged in
The positioning hole and with location hole be clamped.
So set, by integrally lifting feeding auxiliary device to the working panel of rubber vulcanizing machine, and make limited block
It is connected on working panel, the forming cavity on placing groove and working panel in placement plate is made to align, improve feeding auxiliary dress
The stability of feeding auxiliary device when setting the accuracy and discharging that are discharged on working panel.
Further setting: in the post-cure processing step, heating temperature is 160~200 DEG C, and when heating is a length of
60min。
Further setting: in the post-cure processing step, heating temperature is 170~190 DEG C, and when heating is a length of
60min。
Further setting: in the post-cure processing step, heating temperature is 180 DEG C, when heating a length of 60min.
So set, by being produced and processed at different temperatures, convenient for the various performances to product under different condition
The detection and exploration of parameter, so optimize or improve product quality and subsequent improvement when parameter control.
Further setting: in the blank step, a length of 120mm of the size of strip silica gel material, width 15mm, thickness 2mm.
So set, keeping the shower jet size after being formed suitable.
By using above-mentioned technical proposal, the present invention compares compared with the prior art: having the stretching for reinforcing shower nozzle steady
Stability when qualitative and generation deformation quantity improves product to the ageing resistance and service performance of environment, improves product
Service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the feeding auxiliary device of rubber vulcanizing machine；
Top view when Fig. 2 is the feeding auxiliary device discharge status of rubber vulcanizing machine；
Top view when Fig. 3 is the feeding auxiliary device state of charge of rubber vulcanizing machine；
Cross-sectional view when Fig. 4 is the feeding auxiliary device state of charge of rubber vulcanizing machine；
Fig. 5 is the enlarged drawing that A goes out in Fig. 4；
State diagram when Fig. 6 is the feeding auxiliary device discharging of rubber vulcanizing machine between support plate, placement plate and fixed column；
Fig. 7 is the structural schematic diagram of working panel in vulcanization forming machine.
In figure: 1, support plate；11, placing groove；12, sliding slot；2, placement plate；21, sliding chamber；22, notch；3, limit assembly；
31, fixed column；32, limited block；4, return component；41, pulling plate；42, fixed plate；43, return spring；44, guide post；5, it works
Panel；51, location hole；6, it shakes hands.
Specific embodiment
The production and processing technology of shower nozzle is described further referring to Figure 1 to Figure 7.
A kind of embodiment 1: production and processing technology of shower nozzle, comprising the following steps:
S1, raw material warehouse entry: silica gel receiving inspection.
S2, thawing condense again: heating to silica gel, sequentially add rubber chemicals and colorant, the liquid after alignment hot melt
Body is stirred uniformly, condenses slabbing cooling；Wherein, rubber chemicals are N cyclohexyl 2 benzothiazole sulfenamide, color
Material is organic pigment.
S3, idler wheel add rush: the block silica gel after condensation being flattened, and carries out vulcanization detection to it.
S4, sizing material are cooling；By natural cooling, make silica gel material complete cooling and shaping entirely.
S5, blank: plastic cement is sheared into strips after cooling to flattening, and is carried out material weight to strip silica gel material, expected that length is taken out
It tests；The a length of 120mm of the size of strip silica gel material, width 15mm, thickness 2mm.
S6, sulfidization molding: including rubber vulcanizing machine and the feeding auxiliary device for rubber vulcanizing machine, feeding auxiliary
Device, as shown in Figure 1, including support plate 1, the placement plate being slideably positioned in support plate 12, being set to support plate 1 and place
It is in the limit assembly 3 slided in support plate 1 for limiting placement plate 2 between plate 2 and placement plate 2 is promoted to be in support plate 1
The return component 4 of self-return after upper sliding；Support plate 1 and placement plate 2 are wooden plate.
As shown in Figure 3, wherein support plate 1 in placement plate 2 it is parallel offer it is several for accommodating strip rubber mass
Placing groove 11, and the placement on placing groove 11 and placement plate 2 when support plate 1 and placement plate 2 are placed naturally, in support plate 1
The dislocation arrangement of slot 11；As shown in Fig. 2, by sliding support plate 1, when making concordant between support plate 1 and placement plate 2, in support plate 1
Placing groove 11 and placement plate 2 on placing groove 11 align setting.
As shown in Figure 4 and Figure 5, limit assembly 3 includes the fixed column 31 being fixedly installed in placement plate 2 and fixed setting
In 31 end of fixed column and diameter is greater than the limited block 32 for limiting column diameter；Sliding slot 12, fixed column 31 are provided in support plate 1
It is arranged in the sliding slot 12, and the end face of limited block 32 and support plate 1 contradicts, fixed column 31 is in the distance slided in sliding slot 12
Equal to the width of placing groove 11；As shown in connection with fig. 3, it is provided with the fixed column 31 on four angles of placement plate 2, and supports
It is provided on plate 1 and the one-to-one sliding slot 12 of fixed column 31.
As shown in fig. 7, being offered on the working panel 5 of rubber vulcanizing machine and the one-to-one location hole of limited block 32
51, as shown in connection with fig. 6, limited block 32 is plugged in location hole 51 and is clamped with location hole 51, and limited block 32 deviates from support plate 1
One end setting hemispherical.
As shown in figure 5, return component 4 includes the pulling plate 41 being fixedly installed in support plate 1, is fixedly installed on placement plate 2
On fixed plate 42 and be set between fixed plate 42 and pulling plate 41 and original state is the return spring 43 of nature；?
Sliding chamber 21 is offered in placement plate 2, fixed plate 42 is set on one end side wall of sliding chamber 21, pulling plate 41 be arranged in sliding chamber 21 and with
Fixed plate 42 is arranged in parallel.
In conjunction with shown in Fig. 3 and Fig. 5, two return springs 43 are symmetrically disposed between pulling plate 41 and fixed plate 42；To mention
High return spring 43 generates stability when deformation, guide post 44 is fixedly installed on pulling plate 41, and return spring 43 is arranged
In outside guide post 44.
6 are shaken hands for carry feeding auxiliary device as shown in figure 3, being provided in the two sides of fagging, and in placement plate 2
On offer for shake hands 6 relative to placement plate 2 slide notches 22.
Working principle: under natural conditions, support plate 1 and the dislocation of placement plate 2 are arranged, in return component 4 at return spring 43
In nature, at this time by the way that strip rubber mass to be placed in the placing groove 11 of placement plate 2, and bottom end passes through 1 baffle of support plate,
Strip rubber mass can be made to be in placement plate 2；6 feeding auxiliary device is integrally lifted to rubber vulcanizing machine by hand-held shake hands
It on working panel 5, and is connected in the limited block 32 in positioning component in the location hole 51 on working panel 5, makes in placement plate 2
Placing groove 11 align with the forming cavity on working panel 5；At this time by pulling pulling plate 41 towards 42 direction of fixed plate, return
Spring 43 is pressurized, while fixed column 31 is in the sliding slot 12 in support plate 1 Nei and slides, when fixed column 31 and the conflict of sliding slot 12,
Support plate 1 aligns with the placing groove 11 in placement plate 2 at this time, and strip rubber mass loses support and falls on working panel 5, it
Rear bearing sheet 1 passes through 43 self-return of return spring, support plate 1 and 11 mutual dislocation of placing groove in placement plate 2, then will thereon
Material auxiliary device is removed on working panel 5, having the function that disposably to unify feeding, and rubber raw materials are placed in rubber sulphur by raising
Efficiency on change machine.
Bar shaped silica gel material is placed on vulcanization forming machine working panel 5 by feeding auxiliary device carry out it is hot-forming,
And in sulfidization molding step, the temperature of hot pressing is 170 DEG C, and the time of hot pressing is 60s；The preliminary mould of shower nozzle can be formed
Type.
S7, appearance trimming: flash trimming is carried out to nozzle after molding.
S8, post-cure processing: by oven heat, high-temperature process is carried out to nozzle；And heating temperature is 160 DEG C, is added
A length of 60min when hot.
S9, finished product shipment inspection.
Embodiment 2: a kind of production and processing technology of shower nozzle, difference from Example 1 are that post-cure is handled
In step, heating temperature is 165 DEG C, when heating a length of 60min.
Embodiment 3: a kind of production and processing technology of shower nozzle, difference from Example 1 are that post-cure is handled
In step, heating temperature is 170 DEG C, when heating a length of 60min.
Embodiment 4: a kind of production and processing technology of shower nozzle, difference from Example 1 are that post-cure is handled
In step, heating temperature is 175 DEG C, when heating a length of 60min.
Embodiment 5: a kind of production and processing technology of shower nozzle, difference from Example 1 are that post-cure is handled
In step, heating temperature is 180 DEG C, when heating a length of 60min.
Embodiment 6: a kind of production and processing technology of shower nozzle, difference from Example 1 are that post-cure is handled
In step, heating temperature is 185 DEG C, when heating a length of 60min.
Embodiment 7: a kind of production and processing technology of shower nozzle, difference from Example 1 are that post-cure is handled
In step, heating temperature is 190 DEG C, when heating a length of 60min.
Embodiment 8: a kind of production and processing technology of shower nozzle, difference from Example 1 are that post-cure is handled
In step, heating temperature is 195 DEG C, when heating a length of 60min.
Embodiment 9: a kind of production and processing technology of shower nozzle, difference from Example 1 are that post-cure is handled
In step, heating temperature is 200 DEG C, when heating a length of 60min.
Embodiment 10: rubber air oven aging test
Subjects: using the shower nozzle in above-described embodiment 1-9 as test sample, it is with shower nozzle common on the market
Comparative example 1 is used as control sample.
Content of the test: each onesize and thickness shower nozzle (120mm*120mm*13mm) is placed on an equal basis
Under the conditions of ageing oven in, according to method as defined in national standard (GBT3512-1983), and by single control variate method, inspection
Measure the anti-aging intensity of manufactured shower nozzle under different temperatures.
The air displacement rate of ageing oven is calculated with following formula:
N=3590(X-Y)/(V*D*T)
In formula, N- air displacement number per hour；Electronic rate when X- ageing oven blow-by consumes (W), it is by electric degree
The power consumption that table measures is divided by obtained from minute (h)；Electric power consumption (W) when Y- ageing oven seals, illness side
Method is same as above；The full content product of V- ageing oven, cm3；Atmospheric density around D- ageing oven, g/cm3；T- ageing oven internal and external temperature
Difference；The air displacement rate of ageing oven is 3~10 times/h.
Test result: through same time (96h/144h), being tested for the property shower nozzle under different test temperatures,
The anti-aging test color difference of its shower nozzle, that is, the results are shown in Table 1 for form.
Table 1
Shower nozzle provided by the invention be can be seen that from result above and comparative example 1 than comparative example 1 with more good
Good performance, wherein after anti-aging color difference performance under suitable process parameter control reaches 200 DEG C and duration 96h, surface
It is without exception, after temperature is 300 DEG C and duration 96h, surface slight fold and jaundice；Therefore the present invention is in suitable parameter
Controlling has down very good anti-aging property, and in above embodiments, the shower that wherein preparation process of embodiment 5 obtains sprays
Its anti-aging property of mouth is best, therefore as optimal embodiment.
Simultaneously during studying the present invention, some exploratory experiments are carried out, in order to verify the reliable of instant component
Property, it is control with embodiment 5, eliminates corresponding step under study for action, result and effect clearly, therefore illustrates this hair
The component of bright offer has good correspondence, carries out specific PROCESS OVERVIEW below.
By taking embodiment 5 as an example, during preparing shower nozzle, post-cure processing, other steps and implementation are saved
Example 5 is identical, as a result carries out anti-aging property test to the shower nozzle, and as a result there is apparent yellowing phenomenon on its surface, simultaneously also
Occurs phenomenon of rupture when having the phenomenon that obvious corrugation, while stretching, therefore post-cure is handled to anti-aging property with important
Effect.
When simultaneously by 100 DEG C of comparison, by two groups of duration 96h and 144h, in each embodiment after its anti-aging test,
Extension test is carried out again, and effect illustrates at identical temperature without significant difference, and different durations influence not its anti-aging test
Greatly.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of production and processing technology of shower nozzle, which comprises the following steps:
S1, raw material warehouse entry: silica gel receiving inspection；
S2, thawing condense again: sequentially adding rubber chemicals and colorant；
S3, idler wheel add rush: the block silica gel after condensation being flattened, and carries out vulcanization detection to it；
S4, sizing material are cooling；
S5, blank: plastic cement is sheared into strips after cooling to flattening, and is carried out material weight to strip silica gel material, expected that length is inspected by random samples；
S6, sulfidization molding: by rubber vulcanizing machine, the strip silica gel material being placed on vulcanization forming machine working panel is subjected to heat
It is molded, include support plate (1), the placement plate (2) being slideably positioned on support plate (1) and be set to support plate (1) with
It is in the limit assembly (3) slided on support plate (1) for limiting placement plate (2) between placement plate (2), in the support plate
(1) and in placement plate (2) offer in parallel several placing grooves (11), and support plate (1) and placement plate (2) it is concordant between put
When setting, the placing groove (11) in support plate (1) communicates arrangement with the placing groove (11) on placement plate (2)；
S7, appearance trimming: flash trimming is carried out to nozzle after molding；
S8, post-cure processing: by oven heat, high-temperature process is carried out to nozzle；
S9, finished product shipment inspection.
2. the production and processing technology of shower nozzle according to claim 1, it is characterised in that: described to melt congealing step again
In, rubber chemicals are N cyclohexyl 2 benzothiazole sulfenamide, and colorant is organic pigment.
3. the production and processing technology of shower nozzle according to claim 1, it is characterised in that: the sulfidization molding step
In, the temperature of hot pressing is 170 DEG C, and the time of hot pressing is 60s.
4. the production and processing technology of shower nozzle according to claim 1, it is characterised in that: limit assembly (3) packet
It includes the fixed column (31) being fixedly installed on placement plate (2) and is fixedly installed on fixed column (31) end and diameter and be greater than limit
The limited block (32) of column diameter, is provided with sliding slot (12) on the support plate (1), and the fixed column (31) is arranged in the cunning
Slot (12), and the end face of the limited block (32) and support plate (1) contradicts.
5. the production and processing technology of shower nozzle according to claim 4, it is characterised in that: in the rubber vulcanizing machine
It is provided on working panel (5) location hole (51), the limited block (32) is plugged in the location hole (51) and and location hole
(51) it is clamped.
6. the production and processing technology of shower nozzle according to claim 1, it is characterised in that: the post-cure processing step
In rapid, heating temperature is 160~200 DEG C, when heating a length of 60min.
7. the production and processing technology of shower nozzle according to claim 1, it is characterised in that: the post-cure processing step
In rapid, heating temperature is 170~190 DEG C, when heating a length of 60min.
8. the production and processing technology of shower nozzle according to claim 1, it is characterised in that: the post-cure processing step
In rapid, heating temperature is 180 DEG C, when heating a length of 60min.
9. the production and processing technology of shower nozzle according to claim 1, it is characterised in that: in the blank step, item
The a length of 120mm of the size of shape silica gel material, width 15mm, thickness 2mm.
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| CN105754353A (en) * | 2016-03-28 | 2016-07-13 | 东莞市亚马电子有限公司 | High-thermal-conductivity silicone rubber and preparation process thereof |
| CN205684343U (en) * | 2016-06-23 | 2016-11-16 | 天津天世农农牧科技有限公司 | Powder charging equipment |
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|---|---|---|---|---|
| US3890413A (en) * | 1974-08-15 | 1975-06-17 | Hydramet American Inc | Apparatus and method for compacting particulate materials |
| JPH068266A (en) * | 1992-06-25 | 1994-01-18 | Nitto Denko Corp | Spiral powder compression molded object and production tbereof |
| JP2004358673A (en) * | 2003-06-02 | 2004-12-24 | Kawada Construction Co Ltd | Arcuate molding and ageing apparatus for cement extrusion molded panel |
| CN101835588A (en) * | 2007-09-21 | 2010-09-15 | Rep国际公司 | Be used in particular for the thermosets implanter and the corresponding implementation method of the vulcanization of rubber |
| CN205303434U (en) * | 2016-01-20 | 2016-06-08 | 嘉盛半导体(苏州)有限公司 | Device is born weight of in last unloading of semiconductor package |
| CN105754353A (en) * | 2016-03-28 | 2016-07-13 | 东莞市亚马电子有限公司 | High-thermal-conductivity silicone rubber and preparation process thereof |
| CN205684343U (en) * | 2016-06-23 | 2016-11-16 | 天津天世农农牧科技有限公司 | Powder charging equipment |
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|---|---|
| CN107599253A (en) | 2018-01-19 |
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