CN102909829A - Full hot runner forming die for injector outer sheath - Google Patents
Full hot runner forming die for injector outer sheath Download PDFInfo
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- CN102909829A CN102909829A CN2012104176920A CN201210417692A CN102909829A CN 102909829 A CN102909829 A CN 102909829A CN 2012104176920 A CN2012104176920 A CN 2012104176920A CN 201210417692 A CN201210417692 A CN 201210417692A CN 102909829 A CN102909829 A CN 102909829A
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Abstract
The invention discloses a full hot runner forming die for an injector outer sheath. The full hot runner forming die comprises a hot runner plate, a hot runner splitter plate, a mold core, a mold core fixing plate, a hot runner body, a mold cavity plate, a mold cavity baffle plate and a tightening plate; a hot tip is arranged at the tail end of the hot runner body; the hot tip and sprues on an embedded sleeve of the mold cavity are arranged around the hot runner body or arranged at the two sides of the hot runner body; the mold cavity baffle plate is provided with a cooling device; the cooling device comprises a cooling water channel on the embedded sleeve of the mold cavity, a water channel connecting block and a mold cavity baffle plate water channel; the connecting block is provided with at least one water channel through hole; and the mold cavity baffle plate water channel is connected by the water channel through hole of the connecting block. According to the full hot runner forming die for the injector outer sheath, the annular cooling water channel is matched with the water channel connecting block on the mold cavity baffle plate; a problem the products are bent is solved on condition that the service life of forming die is guaranteed; and in addition, balanced flow of resin is guaranteed by the cooling device and pressure balance in the cooling hot runner and the external pressure balance of the die sprue are guaranteed as well for improving quality of products.
Description
Technical field
The invention belongs to mould applications, particularly the mould of the full hot runner molding of a kind of syringe jacket.
Background technology
Syringe is a kind of disposable medical appliance commonly used, and the overcoat in the syringe is one of topmost parts of syringe, in use, requires overcoat without bending.Because one of design feature of these parts is that draw ratio is larger, the cross section diameter ratio that is the length of parts and parts is larger, for guarantee overcoat without crooked, crimping is straight, macromolecular material is when normally used manufacturing process-injection mo(u)lding, need along component axial direction Uniform Flow, this requirement need to realize by the position of cast gate placement and the quantity of cast gate.
For solving the problem of cast gate quantity, the at present overcoat production of syringe is adopted cold runner structure with injection mold.The mould of cold runner all has cast gate to put the characteristics such as flexible, can solve the problem of goods bending, but the runner that it is long, so that the raw material of heating is before arriving mould gate, larger temperature drop is arranged, and so that need to improve injection pressure during injection moulding, thereby reduced the mold use life-span, therefore this is a kind of mode with exchanging flexibility die life for: as adopting the heating-up temperature that improves raw material, then molding cycle must prolong; Taking of regrinding-material not only needs the such auxiliary equipment of manipulator, also prolonged the cycle of moulding; If with manually taking, then must under automanual pattern, produce, not only increase producers, the quality of product is unstable, also easily produces the personal safety problem.
Full hot flow path is because of in whole injection cycle, flow path portion is in heating always or remains on the design temperature state, and its cast gate contacts with the direct of injection-molded item, thereby without regrinding-material, injection pressure is also therefore much lower than the mould of cold runner, and problems are all effectively solved because of the characteristics of hot flow path or improve in the cold runner die.
Although full hot flow path has many advantages, its larger-size nozzle is so that the quantity of cast gate and position are put all flexible not as cold runner die; The position limitation of cast gate can cause resin flows uneven, and the product of producing is easy to bending, even can not produce complete product.
Hot flow path is in all the time in process of production heating or in the condition of high temperature of setting, cast gate is longer time of contact with goods in a molding cycle, so that the excess Temperature at product sprue place is easy to produce injection defect.To the matched moulds stage, the pressure in the hot flow path is greater than the external pressure of mould gate in die sinking, and heated resin is easy to flow out from cast gate, can affect the production of next mould, even can cause the damage of mould.For this reason, before die sinking, the cast gate place need to have one deck too thickly can not seal cast gate by too thin film, and this need to have at the cast gate place cooling system that can control the cast gate temperature.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of syringe jacket full hot runner molding mould, this mould is by the position of cast gate and the reasonable setting of cooling water channel, and goods can not produce bending after the moulding, can protect mould simultaneously.
For achieving the above object, the invention provides following technical scheme: the full hot runner molding mould of a kind of syringe jacket comprises hot runner manifold, hot runner flow distribution plate, core, core fixing plate, hot flow path body, cavity plate, die cavity baffle plate and strangles plate.Described hot flow path body is embedded in cavity plate and the die cavity baffle plate, is connected on the hot runner flow distribution plate; Be inlaid with die cavity edge cover on the cavity plate, the die cavity edge puts and offers the overcoat die cavity; Core is fixed on the core fixing plate, and passes to strangle and strangle sleeve-board and cavity plate, die cavity baffle plate on the plate, extend into to be embedded in the die cavity of offering in the cavity plate upper impression edge cover; In the hot flow path body tip heat is set and chews, the cast gate that puts with die cavity edge is corresponding, it is characterized in that, described heat is chewed, the cast gate that puts with the die cavity edge with the polygon mode be arranged in the hot flow path body on every side or be arranged in the both sides of hot flow path body; Be provided with cooling device on the die cavity baffle plate, this cooling device comprises cooling water channel, water channel contiguous block and the die cavity baffle plate water channel that the die cavity edge puts, and be arranged on the top, cast gate place of die cavity edge cover and cast gate place laterally around, cast gate can fully be cooled off, reach product cast gate place without curtain coating; A watercourse through-hole is set on the contiguous block at least, and die cavity baffle plate water channel is by the watercourse through-hole connection of contiguous block.
The present invention is done further design: described cooling water channel comprises inlet channel, direct cooling water channel, annular cooling water road and water outlet, and described annular cooling water road places around the die cavity of crimping, and is contiguous all around through cast gate; Described direct cooling water channel places the inside of other and each Die and mould plate of overcoat die cavity, respectively is provided with minute opening of at least one on described inlet channel and the water outlet, and the port in described annular cooling water road respectively and be connected the opening connection.
The present invention is done further design: described gate location is arranged on the one or both sides of two crimpings of syringe in the die cavity edge cover upper impression, and described cast gate is spot pouring mouth.
The present invention is made further design: described gate location is arranged on top and the close overcoat crimping minor axis place of syringe crimping minor axis in the die cavity edge cover upper impression.
The present invention is done further design: the quantity of minute opening of described inlet channel and water outlet is two, and described annular cooling water road is two groups, and every group water annulus runs through respectively the left and right and top of crimping cavity.
The present invention is done further design: be provided with a watercourse through-hole on the described water channel contiguous block, described through hole both sides respectively are provided with sealing ring, on the water channel contiguous block, also securing member can be set, be fastenedly connected with cavity plate, screw hole for example is set also be fastenedly connected with screw and cavity plate.
The present invention is done further design: the quantity of minute opening of described inlet channel and water outlet is one, and described annular cooling water road is single group, and water annulus runs through respectively the left and right and top of crimping cavity.
The present invention is done further design: described water channel contiguous block is comprised of two paths, and two through holes in the water channel contiguous block become upper and lower staggered designs, described watercourse through-hole both sides respectively are provided with sealing ring, screw hole also can be set on the water channel contiguous block be fastenedly connected with screw and cavity plate.。
The present invention cooperates the water channel contiguous block to realize the cooling of crimping both sides by the annular cooling water road on the die cavity baffle plate, make the annular cooling water road be arranged in the crimping both sides, and make the crimping of product reach cooling effect, so just can make the phenomenons such as its crimping that can prevent product when the demoulding upwarps, and then guarantee the quality of syringe jacket.
Description of drawings
Fig. 1 is the structural representation of the full hot runner molding mould of a kind of syringe jacket of the present invention;
Fig. 2 is the cooling water channel distribution map of the embodiment of the invention one;
Fig. 3 is the distribution map in annular cooling water road in the embodiment of the invention one;
Fig. 4 is the embodiment of the invention two cooling water channel distribution maps;
Fig. 5 is embodiment of the invention second ring cooling water channel distribution map;
Fig. 6 is the structure chart of water channel contiguous block of the present invention
Fig. 7 is that gate location of the present invention is put schematic diagram
Fig. 8 is that the another kind of gate location of the present invention is put schematic diagram
Fig. 9 is the schematic diagram of the another kind of connecting hole of contiguous block of the present invention
Figure 10 is the cutaway view of A-A direction among Fig. 9 among the present invention
Figure 11 is the cutaway view of B-B direction among Fig. 9 of the present invention
Figure 12 is the cutaway view of C-C direction among Fig. 9 of the present invention
The specific embodiment
Embodiment one: the full hot runner molding mould of a kind of syringe jacket, comprise hot runner manifold 2, hot runner flow distribution plate 12, die cavity baffle plate 32, core 9, core fixing plate 5, hot flow path body 7, cavity plate 31 and strangle plate 4, wherein, die cavity baffle plate 32 can be integrally formed with cavity plate 31, hot flow path body 7 is embedded in the cavity plate 31, be connected on the hot runner flow distribution plate 12, be inlaid with die cavity edge cover 8 on the cavity plate 31, offer the overcoat die cavity on the die cavity edge cover 8, core 9 is fixed on the core fixing plate 5, and pass to strangle and strangle sleeve-board 10 and die cavity baffle plate 32 on the plate 4, extend into and be embedded in the die cavity of offering in the cavity plate 31 upper impression edge cover 8, at hot flow path body 7 ends heat being set chews, corresponding with the cast gate on the die cavity edge cover 8, heat is chewed can be with annular, rectangle, square or polygon mode be arranged in hot flow path body 7 around or be arranged in the both sides of hot flow path body 7, be provided with cooling device on the die cavity baffle plate 32, cooling device comprises the cooling water channel 14 that the die cavity edge puts, water channel contiguous block 15, cavity plate inlet channel 16 and water outlet 17, this cooling device be arranged on the top, cast gate place of die cavity edge cover and cast gate place laterally around, be provided with one watercourse through-hole 152 on the water channel contiguous block 15, and the watercourse through-hole 152 that cavity plate inlet channel 16 is connected with water outlet by water channel contiguous block 15 connects.
Described gate location is arranged on the one or both sides of two crimpings 18 of syringe in the die cavity edge cover upper impression, and described cast gate is spot pouring mouth, specifically, referring to Fig. 7, can be arranged on when the position of cast gate 11 on crimping one side (adept part) 18 of overcoat goods, referring to Figure 12, cast gate 11 can be on the both sides of syringe crimping.Adopt the structure of single-point cast gate, during injection moulding, resin to hot-runner nozzle, is injected resin from the cast gate of hot-runner nozzle the die cavity of mould through hot flow path.Because the position of cast gate 11 is to be positioned on the crimping 18, the direction of cast gate 11 is towards the opposite side of crimping 18, and resin at first flow to without hot-runner nozzle one side by the side crimping 18 that nozzle is arranged and is full of this side crimping; If the employing double cast gate, then the crimping in the syringe both sides advances glue simultaneously, and then resin almost flows to the cephalad direction of overcoat simultaneously along the space that die cavity and core surround, until be full of the space at the head place of overcoat goods.
Referring to Fig. 8, the position of cast gate also can be arranged on the top of overcoat crimping minor axis 22 and near the side at overcoat crimping minor axis 22 places or to the both sides of correspondence.The injection direction of cast gate 11 is towards the bottom, and during injection moulding, resin flows to the direction of crimping first, and by being full of and cushion of crimping place, and resin is almost upwards mobile until be full of the space that whole core 9 and die cavity surround simultaneously.Adopt this scheme can realize a bit or the high overcoat of two spot pouring mouth production glacing flatness, effectively solved overcoat crooked.
The cooling device of annular layout comprises inlet channel 16, direct cooling water channel 13, annular cooling water road 14 and water outlet 17.With reference to figure 1,2 and 3, annular cooling water road 14 places around the die cavity of crimping 18, can enough cool off the crimping in the die cavity, makes the crimping of product straight; Cooling water channel 14 can enough cool off gate area through cast gate 11 vicinities all around, reaches cast gate without curtain coating; Direct cooling water channel 13 places the inner with each template of being advanced up and down of hot flow path body 7; Respectively be provided with minute opening of at least one on inlet channel 16 and the water outlet 17, the port in annular cooling water road respectively and be connected the opening connection; With reference to figure 6, the parallel watercourse through-hole 152 of its annular cooling water road by arranging on the water channel contiguous block 15, the through hole both sides respectively are provided with sealing ring 153, and water channel contiguous block 15 also can arrange screw hole and be fastenedly connected with screw and cavity plate.The die cavity of overcoat crimping partly is formed on the end of water channel contiguous block 15, this end with strangle sleeve-board 10 and contact.
Compare with the ring-type layout, the straight line layout is not except there being annular cooling water road 14, and all the other are identical with the ring-type layout, repeat no more here.
Specifically, this embodiment circularizes for die cavity or the multi-cavity mold of circular arrangement especially, in the time of the mould closure, chewing corresponding spot pouring mouth 11 by the heat on the hot flow path body 7 injects in the die cavity, in mold work, its each Die and mould plate comes Die and mould plate is cooled off by the direct cooling water channel.With reference to figure 2,5, each circular die cavity unit 20 is provided with two groups of annular cooling water roads 14 on die cavity baffle plate 32, cooling water passes through tap hole 161 after entering inlet channel 16,162 make in two groups of annular cooling water roads of cooling water difference route, and the tap hole 171 by water outlet 17,172 flow out, when if a plurality of circular die cavitys unit 20 is arranged in the die cavity, connect by the through hole 152 on the water channel contiguous block 15 between two die cavity unit 20, and these water channel contiguous block 15 via through holes 154 are fixed on the die cavity baffle plate 32, so just can comprehensively cool off the die cavity on the crimping;
Referring to Fig. 9 to Figure 12, for the layout that cast gate 11 is respectively established in rectangular arranged and crimping both sides, its water channel contiguous block 15 is comprised of two paths, and two through holes 155 in the water channel contiguous block 15,156 one-tenth upper and lower staggered designs; With reference to Figure 11, the annular cooling water road 14 that the watercourse through-hole 155 of its water channel contiguous block 15 connects on upper and lower two die cavities; With reference to Figure 10, its watercourse through-hole 156 connects the annular cooling water road 14 of left and right two die cavities, and its annular cooling water road 14 places the left and right and top of cast gate 11 and crimping 18, such layout, can take full advantage of mould annular cooling water road 14 is set up and down, thereby reach the purpose of abundant cooling or control cast gate temperature.
Embodiment two: be the mold cavity of unit 20 for following rectangle die cavity unit or single die cavity, be provided with a watercourse through-hole 152 on the water channel contiguous block 15, watercourse through-hole 152 both sides respectively are provided with sealing ring 153, the quantity of minute opening of described inlet channel 16 and water outlet 17 is one, annular cooling water road 14 is single group, and annular cooling water road 14 run through respectively the die cavity edge put crimping directly over or under;
Embodiment two: be the mold cavity of unit 20 for following rectangle die cavity unit or single die cavity, another kind of method is arranged, referring to Fig. 9 to Figure 12, cooling in the die cavity edge cover leans against directly over the crimping to intersect up and down the annular cooling water road 14 of ganging up, be connected to realize with minute opening that inlet channel on the cavity plate 16 is connected with water outlet, also can a mold cavity with water channel contiguous block 15 and annular cooling water road 14 correspondences and realize.
The above only is the preferred embodiment for the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (10)
1. full hot runner molding mould of syringe jacket, comprise hot runner manifold, hot runner flow distribution plate, core, core fixing plate, hot flow path body, cavity plate, die cavity baffle plate and strangle plate, described hot flow path body is embedded in cavity plate and the die cavity baffle plate, is connected on the hot runner flow distribution plate; Be inlaid with die cavity edge cover on the cavity plate, the die cavity edge puts and offers the overcoat die cavity; Core is fixed on the core fixing plate, and passes to strangle and strangle sleeve-board and cavity plate, die cavity baffle plate on the plate, extend into to be embedded in the die cavity of offering in the cavity plate upper impression edge cover; In the hot flow path body tip heat is set and chews, the cast gate that puts with die cavity edge is corresponding, it is characterized in that, described heat is chewed, the cast gate that puts with the die cavity edge with the polygon mode be arranged in the hot flow path body on every side or be arranged in the both sides of hot flow path body; Be provided with cooling device on the die cavity baffle plate, this cooling device comprises cooling water channel, water channel contiguous block and the die cavity baffle plate water channel that die cavity edge puts, described cooling device and be arranged on the top, cast gate place of die cavity edge cover and cast gate place horizontal around; A watercourse through-hole is set on the contiguous block at least, and die cavity baffle plate water channel is by the watercourse through-hole connection of contiguous block.
2. the full hot runner molding mould of a kind of syringe jacket as claimed in claim 1 is characterized in that, described cooling water channel comprises inlet channel, direct cooling water channel, annular cooling water road and water outlet.Described annular cooling water road places around the die cavity of crimping, and is contiguous all around through cast gate; Described direct cooling water channel places the inside of other and each Die and mould plate of overcoat die cavity, and minute opening of at least one respectively is set on the inlet channel on the described die cavity baffle plate water channel and the water outlet, and the port in described annular cooling water road respectively and be connected the opening connection.
3. the full hot runner molding mould of a kind of syringe jacket as claimed in claim 1 is characterized in that, described gate location is arranged on the one or both sides of two crimpings of syringe in the die cavity edge cover upper impression, and described cast gate is spot pouring mouth.
4. the full hot runner molding mould of a kind of syringe jacket as claimed in claim 1 is characterized in that, described gate location is arranged on top and the close overcoat crimping minor axis place of syringe crimping minor axis in the die cavity edge cover upper impression.
5. the full hot runner molding mould of a kind of syringe jacket as claimed in claim 2, it is characterized in that, the quantity of minute opening of described inlet channel and water outlet is two, and described annular cooling water road is two groups, and every group water annulus runs through respectively the left and right and top of crimping cavity.
6. the full hot runner molding mould of a kind of syringe jacket as claimed in claim 2, it is characterized in that, be provided with a watercourse through-hole on the described water channel contiguous block, described through hole both sides respectively are provided with sealing ring, also can be provided with securing member and cavity plate is fastenedly connected on the water channel contiguous block.
7. such as claim 5 or the full hot runner molding mould of 6 described a kind of syringe jackets, it is characterized in that, described water channel contiguous block is comprised of two paths, and two through holes in the water channel contiguous block become upper and lower staggered designs, described watercourse through-hole both sides respectively are provided with sealing ring, also can be provided with securing member and cavity plate is fastenedly connected on the water channel contiguous block.
8. such as claim 5 or the full hot runner molding mould of 6 described a kind of syringe jackets, it is characterized in that, the quantity of minute opening of described inlet channel and water outlet is one, and described annular cooling water road is single group, and water annulus runs through respectively the left and right and top of crimping cavity.
9. the full hot runner molding mould of a kind of syringe jacket as claimed in claim 1 or 2 is characterized in that, described die cavity edge overlaps interior cooling water channel above crimping, the annular cooling water road that the contiguous left-right and front-back design top-bottom cross of process cast gate is ganged up.
10. the full hot runner molding mould of a kind of syringe jacket as claimed in claim 1 is characterized in that, described cavity plate and die cavity baffle plate are integral type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417692.0A CN102909829B (en) | 2012-10-26 | 2012-10-26 | Full hot runner forming die for injector outer sheath |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417692.0A CN102909829B (en) | 2012-10-26 | 2012-10-26 | Full hot runner forming die for injector outer sheath |
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| CN102909829A true CN102909829A (en) | 2013-02-06 |
| CN102909829B CN102909829B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210417692.0A Active CN102909829B (en) | 2012-10-26 | 2012-10-26 | Full hot runner forming die for injector outer sheath |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085235A (en) * | 2013-02-26 | 2013-05-08 | 成都市联余精密机械有限公司 | Novel total heat channel needle cylinder mould |
| CN105382966A (en) * | 2015-12-02 | 2016-03-09 | 温州宏泰模具有限公司 | Pen mold core, feeding method of pen mold core and machining mold |
| CN108582684A (en) * | 2018-05-25 | 2018-09-28 | 珠海格力精密模具有限公司 | One kind is into pouring system and method |
| CN112123699A (en) * | 2020-09-03 | 2020-12-25 | 深圳市志成金科技有限公司 | Side glue feeding hot nozzle and injection molding glue feeding system |
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| CN203157025U (en) * | 2012-10-26 | 2013-08-28 | 浙江千禧光塑料模具有限公司 | A full hot runner forming die for an injector outer sheath |
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| JP2006068956A (en) * | 2004-08-31 | 2006-03-16 | Aoki Technical Laboratory Inc | Cooling structure of cavity bottom part of injection mold |
| CN2871167Y (en) * | 2006-02-22 | 2007-02-21 | 林作钱 | Disposable forming syringe casing mould with thread on end |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085235A (en) * | 2013-02-26 | 2013-05-08 | 成都市联余精密机械有限公司 | Novel total heat channel needle cylinder mould |
| CN103085235B (en) * | 2013-02-26 | 2016-01-13 | 成都市联余精密机械有限公司 | A kind of novel full heat channel needle cylinder mould |
| CN105382966A (en) * | 2015-12-02 | 2016-03-09 | 温州宏泰模具有限公司 | Pen mold core, feeding method of pen mold core and machining mold |
| CN108582684A (en) * | 2018-05-25 | 2018-09-28 | 珠海格力精密模具有限公司 | One kind is into pouring system and method |
| CN112123699A (en) * | 2020-09-03 | 2020-12-25 | 深圳市志成金科技有限公司 | Side glue feeding hot nozzle and injection molding glue feeding system |
| CN112123699B (en) * | 2020-09-03 | 2022-06-14 | 深圳市志成金科技有限公司 | Side glue feeding hot nozzle and injection molding glue feeding system |
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|---|---|
| CN102909829B (en) | 2014-12-24 |
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Denomination of invention: A full hot runner forming die for syringe jacket Effective date of registration: 20220315 Granted publication date: 20141224 Pledgee: Zhejiang Wenling Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang Qianxiguang Plastic Mold Co.,Ltd. Registration number: Y2022330000328 |
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