CN1891427A - Resin formed product and mould for making same - Google Patents
Resin formed product and mould for making same Download PDFInfo
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- CN1891427A CN1891427A CN 200510079373 CN200510079373A CN1891427A CN 1891427 A CN1891427 A CN 1891427A CN 200510079373 CN200510079373 CN 200510079373 CN 200510079373 A CN200510079373 A CN 200510079373A CN 1891427 A CN1891427 A CN 1891427A
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- axial region
- moulding
- die
- synthetic resin
- encapsulant
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Abstract
This invention relates to a resin product molded by resin without parting lines at the shaft and its manufactured dies, which has a shaft of made of sealing materials, is supported in the sealing state and a column state, said shaft is a resin molding product based on the emission characterizing the said shaft has parting lines at its outside.
Description
Technical field
The present invention is the synthetic resin with cylindric axial region of supporting with encapsulant, with sealing state, and is particularly relevant with synthetic resin such as the agitating auger rod installed and mfg. moulding die thereof in the toner print cartridge of electro photography duplicator or printer.
Background technology
As shown in Figure 6, in the toner print cartridge 100 of electro photography duplicator or printer,, rifle bar 200 (for example: can refer to Patent Document 1 etc.) is installed in order to stir inner toner.
Agitating auger rod 200, as Fig. 6 and shown in Figure 7, central authorities are if when having the rifle bar portion 210 of the bar-shaped or penniform rifle bar 211 of spiral, and two ends are equipped with axial region 220.And at setting-in under the state of the encapsulant of ring-type (among the figure sign), axial region 220 can support it in bearing portion rotation of sleeve pipe 110 freely.Promptly, can realize that toner does not spill to the outside between the space between axial region 220 and the sleeve pipe 110 by encapsulant.
Agitating auger rod 200 in the past as shown in Figure 7, bears part in the bearing portion of the durability that requires to have axial region 220, is embedded with metal sleeve 300 outward, with the axial region forming part around resinous agitating auger rod body 201.
But this agitating auger rod 200, the operator at first will use hand operated on the assigned position in the mould die cavity, after making metal sleeve 300 supporting, through closing molding, the ejection formation of agitating auger rod body 201 just can be used, and thus, production operation efficiency is low, and compare with the moulding product that only use resin, cost also exceeds a lot.We also propose to use and the mould of metal sleeve automatic matching in die cavity can be able to be become complicated but install like that, and still has the high problem of production cost.
Therefore, inventor of the present invention is used for axial region agitating auger when rod of the toner print cartridge of special requirement durability, miniprinter etc. not in research, just considers whether can not use metal sleeve, but the dependence ejection formation makes axial region integral body with the moulding of rifle bar body with resin.
[patent documentation 1] spy opens flat 7-253706 communique
[patent documentation 2] spy opens flat 8-190268 communique
But as shown in Figure 7, agitating auger rod 200 places have and are embedded with the come off endless groove 221 of E ring of usefulness of the top agitating auger rod 200 that prevents axial region 220, because groove 221 is for incision, so mould must adopt the shape that the line with the central axes of agitating auger rod 200 is divided into usually.
Therefore, use ejection shaping die in the past, make the initial stage at mould, mold die does not take place or abrasion occur, problem also takes place in parting line hardly.
But in the process that repeated multiple times repeats to penetrate, because the skew of mould, as shown in Figure 8, the parting line of axial region 220 part will the section of generation differ from 400, or as shown in Figure 9, produces burr 500.
If above-mentioned big section differ from 400 or burr 500 etc. betide the surface of axial region, will differ from 400 corner or burr 500 owing to section, might cause the generation of phenomenons such as toner leakage.
Therefore, In view of the foregoing, the object of the present invention is to provide only to rely on the resin global formation and can be at the synthetic resin and the mfg. moulding die thereof of axial region generation parting line.
Summary of the invention
To achieve these goals, the synthetic resin of mentioning among the present invention is characterized by and has the cylindrical axial region of supporting with encapsulant, with sealing state, the synthetic resin that axial region forms by ejection formation, and above-mentioned axial region has the parting line of having outward.
The purposes of the synthetic resin that relates among the present invention, there is no particular limitation, is the example explanation with the agitating auger rod of toner print cartridge:
Be used for the resin of synthetic resin, there is no particular limitation, for example: polyester, polypropylene, polyethylene etc.
In addition, the mfg. moulding die of the synthetic resin that relates among the present invention, be to have with encapsulant, cylindrical axial region with the sealing state support, the mfg. moulding die of the synthetic resin of trough of belt around the axle of the top ends of axial region, has the axial region top die cavity that forms the top ends that comprises the Slot shaping portion in the axial region, the several axial regions top moulding sliding die that is divided into central shaft cut-off rule by axial region, axial region has formation at least by the cylindric die cavity with the encapsulant hermetic unit, use sliding die under opening in the moulding of axial region top, along the central shaft of cylindric die cavity portion, have and between shaping position and moulding product extracting position, to advance and retreat, the sealing support sector moulding feature of axle bush.
And has the encapsulant of using, support with sealing state, cylindrical axial region, around the axle of the top ends of this axial region is the mfg. moulding die of the synthetic resin of Slot shaping, axial region has Slot shaping portion in addition the die cavity axial region moulding axle bush of formation with the axial region top ends of the part composition of encapsulant sealing at least, the several moulds of cutting apart that are divided into the central shaft cut-off rule of using by axial region, these cut apart the mould embedding of being slided at the sliding eye place that above-mentioned axial region moulding is installed on axle bush, under closure state, possess the cut apart mould of the Slot shaping of formation groove forming die slot part with sliding eye, above-mentioned axial region moulding axle bush, fully under the state that above-mentioned Slot shaping breaks away from sliding eye, has the feature of the moulding of can between shaping position and moulding product extracting position, advancing and retreat.
Related synthetic resin as mentioned above among the present invention, being whole ejection formation forms, simultaneously owing to possess the outer parting line of above-mentioned axial region, even mould pressing mold phenomenon or appearance abrasion, the part of contact axial region encapsulant also can often keep smooth state, therefore, can guarantee the sealing of encapsulant.And need not metal sleeve, only rely on ejection formation just can make the synthetic resin global formation, so can accomplish to reduce production costs.If use the agitating auger rod of synthetic resin of the present invention as the toner print cartridge, the cost of toner print cartridge also can reduce.
The mfg. moulding die of the synthetic resin that relates among the present invention, has the axial region top die cavity portion that forms the top ends that comprises groove formation portion, severally cut apart the axial region top moulding sliding die that mould is formed by what the cut-off rule by the axial region central shaft was divided into, at least has the cylindric die cavity that formation is made up of the part of encapsulant sealing with axial region, axial region top ends mold for forming is under the state of opening, has central shaft along cylindric die cavity, can be at the encapsulant moulding axle bush of between shaping position and moulding product extracting position, freely advancing and retreat, perhaps have axial region and form the axial region moulding axle bush of the die cavity portion beyond the Slot shaping portion of the axial region top ends of forming with the part of encapsulant sealing at least, under the closure state that is divided at cut-off rule by the axial region central shaft, form several Slot shaping templates of bottom land minor diameter part, these Slot shapings with template can be installed on above-mentioned axial region moulding with the sliding eye on the axle bush in sliding gomphosis freely, while under the closure state of sliding eye, forms minor diameter part shaping mould slot part at sliding gomphosis.Above-mentioned axial region moulding axle bush, each Slot shaping with template under the state that breaks away from above-mentioned sliding eye fully, owing to have the feature of the moulding of can between shaping position and moulding product extracting position, advancing and retreat, so the present invention can realize improving the purpose of the production efficiency of synthetic resin.
Description of drawings
Fig. 1 a: example--the plane of the critical position of the agitating auger rod of toner print cartridge of the synthetic resin that relates among the present invention for expression.
Fig. 2: the profile of the trend of the critical position of running channel one side of the mfg. moulding die of the agitating auger rod of an example of the synthetic resin that relates among the present invention-be provided with toner print cartridge according to process sequence explanation.With what scheme (a) expression is the mould closure state, and figure (b) expression is to open the state that sliding die is used in the moulding of axial region top together, is to make the moulding of encapsulant support portion slide into the state of moulding product extracting position with axle bush with what scheme (c) expression.
Fig. 3: be that mould axial region top moulding in the key diagram 2 is with the profile of the trend of the sprue portion of sliding die and mould.With what scheme (a) expression is closure state, and with figure (b) expression is the state that mould is opened.
Fig. 4: the trend profile that is the critical position that is not provided with mould running channel one side in the key diagram 2.With figure (a) expression is that the resin fill front mold is closed condition, with figure (b) expression be that mould is closed condition behind the resin fill, with figure (c) expression be the state of Slot shaping after of closing with template, with figure (d) expression is the mould open mode.
Fig. 5: be the X-X line profile of Fig. 4, what figure (a) represented is the mould closed condition, and with figure (b) expression is the state that mould is opened.
Fig. 6: be the profile of an example of expression toner print cartridge in the past.
Fig. 7: be the profile of the critical position of in the past agitating auger rod.
Fig. 8: be the profile of the axial region of explanation segment occurred difference state.
Fig. 9: the profile that the axial region of burr state takes place for explanation.
Among the figure: 21 cores, 22 rifle bars, 3 axial regions, 31 top ends, 32 grooves, 4 mfg. moulding dies, the 5 axial region top moulding sliding die 5a of 1 agitating auger rod (synthetic resin), 2 rifle bar portions, 5b is cut apart mould 51 axial region top die cavity portions 6 encapsulant support portion moulding axle bush 61 cylindrical die cavity 7 sprue moulds, 71 sprues, the 8 axial region moulding axle bush 82 sliding eye 9a of 81 die cavity portions of portion, 9b Slot shaping template 91 minor diameter part forming mould plate PL parting lines
The specific embodiment
Drawing hereinafter with reference to expression the invention process form is elaborated.
Fig. 1 represents is an example--the agitating auger rod of toner print cartridge of the synthetic resin that relates among the present invention.
As shown in Figure 1, the ejection forming technique moulding of agitating auger rod integral body, the both sides of rifle bar 1 have possessed axial region (only expressing one-sided among the figure) 3.
Around the columned core 21 of rifle bar portion 2 and the core 21, have the rifle bar 22 of shape setting in the shape of a spiral.
And agitating auger rod 1 is not owing to have parting line at encapsulant support sector 33 places that the encapsulant (not indicating among the figure) of axial region 3 is supported, very level and smooth all, top ends 31 places of rifle bar portion 2 and axial region 3 have formed the parting line PL with the central axes of agitating auger rod 1.
As mentioned above, agitating auger rod 1 is not owing to form parting line at encapsulant support sector 33 places that the encapsulant (not indicating among the figure) of axial region 3 is supported, so the projections such as burr that the section difference that mold die causes or the abrasion of mould produce, just 33 places, encapsulant support portion of the axial region 3 that can not be supported by the encapsulant of axial region 3 take place.
Therefore, only use resin forming although comprise all parts of axial region 3,33 places, encapsulant support portion of the axial region 3 that the encapsulant of axial region 3 supports can often keep smooth state, thereby guarantee the sealing of encapsulant.And because only use resin forming, so can accomplish the production efficiency height, cost is low.
Fig. 2 represents is the critical position of mould of axial region forming part of representing to be provided with a side of the mould running channel of making above-mentioned agitating auger rod 1 according to the order of operation, what Fig. 3 represented is a part of representing the mfg. moulding die sprue with section, and Fig. 4 figure and 5 is trends of critical position of mould of representing not to be provided with the axial region forming part of mould running channel one side according to the order of operation.As Fig. 2 to shown in Figure 5, mould 4 have the moulding of axial region top with sliding die 5 and the moulding of encapsulant support portion with axle bush 6, sprue mould 7, axial region moulding with 8,2 Slot shapings of axle bush with template 9a, 9b.
As Fig. 2 and shown in Figure 3, by 2 axial region top moulding sliding die 5 closures, formation comprises the axial region top die cavity portion 51 of the Slot shaping in the axial region 3, and the central shaft by axial region 3, cut apart mould 5a, 5b for 2 that promptly are divided into by the cut-off rule of the central shaft of cutting apart axial region top die cavity portion 51 and form.
Encapsulant support portion axle bush 6, what have axial region 3 has the cylindric die cavity portion 61 of formation with the materials for support portion 33 of encapsulant sealing at least, shown in Fig. 2 (b) and Fig. 2 (c), can cut apart mould 5a, 5b in opened condition down with two of sliding die 5 in the moulding of axial region top, and advance and retreat freely between the moulding product extracting position shown in the shaping position shown in Fig. 2 (b) and Fig. 2 (c).
The sprue mould 7 that possesses sprue 71 as shown in Figure 3, begin to finish operations for forming from closure state shown in Figure 3, shown in Fig. 3 (b), the moulding of axial region top is moved along open direction (arrow A, B direction) with sliding die 5, moves along breaking away from the direction (arrow C direction) of axial region top moulding with sliding die 5 simultaneously.
Running channel is a pin running channel mode.Among Fig. 2, R is a cross gate, removes after moulding finishes.
Shown in Fig. 4 (a), axial region moulding axle bush 8 and 2 Slot shaping template 9a, 9b, under closure state, die cavity portion with axial region 3 of running channel one side that formation do not establish agitating auger rod 1, shown in Fig. 4 (d), have and form the axial region moulding with axle bush 8, the cylindrical die cavity portion 81 of the axial region 3 beyond the Slot shaping portion, this will narrate after the part that forms groove 32, and it is equipped with the sliding eye 82 of sliding gomphosis.
On the other hand, Slot shaping template 9a, 9b, as Fig. 4 and shown in Figure 5, be 2 divided shapes that the cut-off rule of the central shaft by axial region 3 is cut apart, these Slot shapings template 9a, 9b, sliding gomphosis as Fig. 4 (a) and shown in Fig. 5 (a), forms minor diameter part shaping mould slot part 91 under closure state on the sliding eye 82 that is located on the axial region moulding usefulness axle bush 8.
Axial region moulding axle bush 8, shown in Fig. 4 (c), Fig. 4 (d) and Fig. 5 (b), Slot shaping with template 9a, 9b under the state that breaks away from sliding eye 82 fully, can and Fig. 4 (c) shown in the moulding product extracting position of shaping position, Fig. 4 (d) between advance and retreat, moulding.
The present invention is not only limited to above-mentioned example.For example: in the above-mentioned example, synthetic resin is the agitating auger rod of toner print cartridge, but also can be used as other agitating auger rod use.And in the above-mentioned example, only be shaped to spiral helicine rifle bar around the core, and several penniform projections also can be set, perhaps both have both at the same time and all can.
Be provided with the axial region of a side of mould running channel in the above-mentioned example, axial region top moulding sliding die 5, be with the moulding of encapsulant support portion with the combination forming of axle bush 6, do not establish the axial region of a side of mould running channel, be with the axial region moulding with axle bush 8, Slot shaping template 9a, the combination forming of 9b, the both sides of axial region also can be used the combination forming of axle bush 6 by the moulding of axial region top with sliding die 5 and the moulding of encapsulant support portion, if running channel is located at the rifle bar body, then the both sides of axial region also can be by axial region moulding axle bush 8 and Slot shaping template 9a, moulding is carried out in the combination of 9b.
Cut apart mould 5a, 5b and Slot shaping with template 9a, 9b, its above-below direction at mould was moved, also can move along left and right directions.
Claims (4)
1, a kind of synthetic resin, it is characterized in that: for having the cylindric axial region of supporting with encapsulant, with sealing state, the synthetic resin of trough of belt is arranged around the axle of the top ends of this axial region, and whole ejection formation forms, and possesses above-mentioned axial region simultaneously parting line is arranged outward.
2, according to request 1 a described synthetic resin, be the agitating auger rod of toner print cartridge.
3, a kind of mfg. moulding die of synthetic resin, it is characterized in that: for having the encapsulant of using, cylindric axial region with the sealing state support, the mfg. moulding die that the synthetic resin of trough of belt is arranged around the axle of the top ends of this axial region, die cavity portion with the axial region top that forms the groove formation portion in the axial region that comprises, severally cut apart the axial region top moulding sliding die that mould is formed by what the central shaft cut-off rule by axial region was divided into, axial region has the cylindric die cavity portion that forms the part of sealing with encapsulant at least, use under the sliding die opening in the moulding of axial region top, along the central shaft of cylindric die cavity portion, can between shaping position and moulding product extracting position, freely advance and retreat, has sealing support sector moulding axle bush.
4, a kind of mfg. moulding die of synthetic resin, it is characterized in that: for having the encapsulant of using, cylindric axial region with the sealing state support, the mfg. moulding die that the synthetic resin of trough of belt is arranged around the axle of the top ends of this axial region, axial region has the axial region moulding axle bush of the die cavity portion in addition of the groove portion of formation of the axial region top ends of being made up of the part of encapsulant sealing at least, and have by the central shaft cut-off rule of axial region and cut apart, under closure state, form several Slot shaping templates of the minor diameter part die cavity of bottom land, these Slot shaping templates, do sliding gomphosis at the sliding eye place that above-mentioned axial region moulding is installed on axle bush, it is slided freely, simultaneously under the closure state after sliding in the sliding eye place, form minor diameter part die cavity portion, above-mentioned axial region moulding axle bush, under the state that each Slot shaping spins off from above-mentioned sliding eye fully with template, has the moulding that between shaping position and moulding product extracting position, freely to advance and retreat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510079373 CN1891427A (en) | 2005-07-09 | 2005-07-09 | Resin formed product and mould for making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510079373 CN1891427A (en) | 2005-07-09 | 2005-07-09 | Resin formed product and mould for making same |
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| Publication Number | Publication Date |
|---|---|
| CN1891427A true CN1891427A (en) | 2007-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510079373 Pending CN1891427A (en) | 2005-07-09 | 2005-07-09 | Resin formed product and mould for making same |
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| CN (1) | CN1891427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154786A (en) * | 2014-08-22 | 2016-11-23 | 夏普株式会社 | Toner transfer unit, developing unit and image processing system |
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2005
- 2005-07-09 CN CN 200510079373 patent/CN1891427A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154786A (en) * | 2014-08-22 | 2016-11-23 | 夏普株式会社 | Toner transfer unit, developing unit and image processing system |
| CN106154786B (en) * | 2014-08-22 | 2019-11-19 | 夏普株式会社 | Toner transfer unit, developing apparatus and image forming apparatus |
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