CN203157025U - A full hot runner forming die for an injector outer sheath - Google Patents
A full hot runner forming die for an injector outer sheath Download PDFInfo
- Publication number
- CN203157025U CN203157025U CN 201220556174 CN201220556174U CN203157025U CN 203157025 U CN203157025 U CN 203157025U CN 201220556174 CN201220556174 CN 201220556174 CN 201220556174 U CN201220556174 U CN 201220556174U CN 203157025 U CN203157025 U CN 203157025U
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- die cavity
- hot runner
- plate
- water channel
- cooling water
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Abstract
The utility model 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 utility model 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 not have bending.Because one of design feature of these parts is that draw ratio is bigger, the cross section diameter ratio that is the length of parts and parts is bigger, for guaranteeing that overcoat does not have bending, crimping is straight, macromolecular material is when normally used manufacturing process-injection mo(u)lding, need evenly to flow along the component axial direction, this requirement need realize by the position of cast gate placement and the quantity of cast gate.
For solving the problem of cast gate quantity, the overcoat production of syringe is at present adopted the cold runner structure with injection mold.The mould of cold runner all has cast gate to put characteristics such as flexible, can solve the problem of goods bending, but the runner that it is long, make the raw material that heats before arriving mould gate, bigger temperature drop is arranged, and need improve injection pressure when making injection moulding, thereby reduced the service life of mould, therefore this is a kind of with the mode that exchanges flexibility die life for: as adopting the heating-up temperature that improves raw material, then molding cycle must prolong; Taking of mouth of a river 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 instability of product also is easy to generate 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 do not have the mouth of a river and expect, 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 mould.
Though full hot flow path has many advantages, its larger-size nozzle makes the quantity of cast gate and position put all flexible not as the cold runner mould; The position restriction of cast gate can cause the resin flows imbalance, and the product of producing is easy to bending, even can not produce complete product.
Hot flow path is in heating in process of production all the time or in the condition of high temperature of setting, cast gate is longer time of contact with goods in a molding cycle, makes that the temperature at goods cast gate place is too high, 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 influence the production of next mould, even can cause the damage of mould.For this reason, before die sinking, the cast gate place need have one deck too thickly can not seal cast gate by too thin film, and this need have the cooling system that can control the cast gate temperature at the cast gate place.
The utility model content
Technical problem to be solved in the utility model 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 utility model 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 reins in 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 rein in and rein in 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, and 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 around or be arranged in the both sides of hot flow path body; The die cavity baffle plate is provided with cooling device, 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, reaching product cast gate place does not have 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 utility model is done further design: described cooling water channel comprises inlet channel, once-through cooling water road, 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 once-through cooling water road places the inside of overcoat die cavity side and each Die and mould plate, and the branch 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 is connected with a minute opening respectively.
The utility model 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 the some cast gate.
The utility model 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 utility model is done further design: the quantity of the branch 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 the left and right and top of crimping cavity respectively.
The utility model is done further design: described water channel contiguous block is provided with a watercourse through-hole, 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 utility model is done further design: the quantity of the branch opening of described inlet channel and water outlet is one, and described annular cooling water road is single group, and water annulus runs through the left and right and top of crimping cavity respectively.
The utility model is done further design: described water channel contiguous block is made up 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.
The utility model 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 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 utility model.
Fig. 2 is the cooling water channel distribution map of the utility model embodiment one.
Fig. 3 is the distribution map in annular cooling water road among the utility model embodiment one.
Fig. 4 is the utility model embodiment two cooling water channel distribution maps.
Fig. 5 is the utility model embodiment second ring cooling water channel distribution map.
Fig. 6 is the structure chart of the utility model water channel contiguous block.
Fig. 7 puts schematic diagram for the utility model gate location.
Fig. 8 puts schematic diagram for the another kind of gate location of the utility model.
Fig. 9 is the schematic diagram of the another kind of connecting hole of the utility model contiguous block.
Figure 10 is the cutaway view of A-A direction among Fig. 9 in the utility model.
Figure 11 is the cutaway view of B-B direction among the utility model Fig. 9.
Figure 12 is the cutaway view of C-C direction among the utility model Fig. 9.
Figure 13 puts the sectional structure chart of structure for another kind of gate location among Fig. 8.
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 rein in plate 4, wherein, described cavity plate 31 and die cavity baffle plate 32 are integral type, 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 rein in and rein in 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, die cavity baffle plate 32 is provided with cooling device, 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 8 and cast gate place laterally around, water channel contiguous block 15 is provided with one watercourse through-hole 152, and cavity plate inlet channel 16 is connected with the watercourse through-hole 152 of water outlet 17 by water channel contiguous block 15, and the cooling water channel in the described die cavity edge cover 8 is above crimping 18, and contiguous left-right and front-back design intersects the annular cooling water road of ganging up up and down through cast gate.
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 a cast gate, 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 no hot-runner nozzle one side and is full of this side crimping by the side crimping 18 that nozzle is arranged; If adopt the double teeming mouth, then the crimping in the syringe both sides advances glue simultaneously, and then resin almost flows the space up to the head place that is full of the overcoat goods to the cephalad direction of overcoat simultaneously along the space that die cavity and core surround.
Referring to Fig. 8 and Figure 13, 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 earlier, and by being full of and cushion of crimping place, resin is almost upwards mobile until being full of the space that whole core 9 and die cavity surround simultaneously.Adopt this scheme can realize a bit or 2 high overcoats of cast gate production glacing flatness, solved the overcoat bending effectively.
The cooling device of annular layout comprises inlet channel 16, once-through cooling water road 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, and reaching cast gate does not have curtain coating; Once-through cooling water road 13 place hot flow path body 7 up and down and each template inside of being advanced; Respectively be provided with the branch opening of at least one on inlet channel 16 and the water outlet 17, the port in annular cooling water road is connected with a minute opening respectively; 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 rein in 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 at die cavity or the multi-cavity mold of circular arrangement especially, in the time of the mould closure, chewing corresponding some cast gate 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 once-through cooling water road.With reference to figure 2,5, each circular die cavity unit 20 is provided with two groups of annular cooling water roads 14 on the die cavity baffle plate 32, cooling water enters inlet channel 16 backs by tap hole 161,162 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, at the layout that cast gate 11 is respectively established in rectangular arranged and crimping both sides, its water channel contiguous block 15 is made up 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 at following rectangle die cavity unit or single die cavity, water channel contiguous block 15 is provided with a watercourse through-hole 152, watercourse through-hole 152 both sides respectively are provided with sealing ring 153, the quantity of the branch 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 at 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 the annular cooling water road of ganging up 14 up and down, be connected to realize that also available water channel contiguous block 15 and annular cooling water road 14 correspondences a mold cavity and realized with the branch opening of inlet channel on the cavity plate 16 and water outlet 17.
The above only is the utility model preferred embodiment; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
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 rein in 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 rein in and rein in 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 around or be arranged in the both sides of hot flow path body; The die cavity baffle plate is provided with cooling device, and 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, it is characterized in that, described cooling water channel comprises inlet channel, once-through cooling water road, 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 once-through cooling water road places the inside of overcoat die cavity side and each Die and mould plate, and the branch 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 is connected with a minute opening respectively.
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 the some cast gate.
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 the branch 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 the left and right and top of crimping cavity respectively.
6. the full hot runner molding mould of a kind of syringe jacket as claimed in claim 2, it is characterized in that, described water channel contiguous block is provided with a watercourse through-hole, and 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. 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 made up 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. 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 the branch opening of described inlet channel and water outlet is one, and described annular cooling water road is single group, and water annulus runs through the left and right and top of crimping cavity respectively.
9. the full hot runner molding mould of a kind of syringe jacket as claimed in claim 1 or 2 is characterized in that, the cooling water channel in the described die cavity edge cover is above crimping, and contiguous left-right and front-back design intersects the annular cooling water road of ganging up up and down through cast gate.
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 |
|---|---|---|---|
| CN 201220556174 CN203157025U (en) | 2012-10-26 | 2012-10-26 | A full hot runner forming die for an injector outer sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220556174 CN203157025U (en) | 2012-10-26 | 2012-10-26 | A full hot runner forming die for an injector outer sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203157025U true CN203157025U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220556174 Expired - Fee Related CN203157025U (en) | 2012-10-26 | 2012-10-26 | A full hot runner forming die for an injector outer sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203157025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909829A (en) * | 2012-10-26 | 2013-02-06 | 浙江千禧光塑料模具有限公司 | Full hot runner forming die for injector outer sheath |
-
2012
- 2012-10-26 CN CN 201220556174 patent/CN203157025U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909829A (en) * | 2012-10-26 | 2013-02-06 | 浙江千禧光塑料模具有限公司 | Full hot runner forming die for injector outer sheath |
| CN102909829B (en) * | 2012-10-26 | 2014-12-24 | 浙江千禧光塑料模具有限公司 | Full hot runner forming die for injector outer sheath |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20131026 |