CN101264654A - Inner vibration sequence injection molding die device and injection molding technique thereof - Google Patents
Inner vibration sequence injection molding die device and injection molding technique thereof Download PDFInfo
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- CN101264654A CN101264654A CNA2007100296246A CN200710029624A CN101264654A CN 101264654 A CN101264654 A CN 101264654A CN A2007100296246 A CNA2007100296246 A CN A2007100296246A CN 200710029624 A CN200710029624 A CN 200710029624A CN 101264654 A CN101264654 A CN 101264654A
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- injection mold
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Abstract
The invention relates to an injection mold device with internal vibration sequence and a corresponding injection molding process thereof; wherein, the injection mold device comprises a heating body (6) arranged in a hot runner board (3) and a heating ring (1) arranged out of the hot runner board (3), wherein, the heating ring (1) is connected with the heating body (6) through a hot nozzle (18) and a hot nozzle cushion cover, a reciprocating straight line motion mechanism (A) is arranged on the heating body (6) and a plurality of spacers (7) are arranged on the outer side of the heating body (6). The injection molding process comprises the following steps: 1) the heating body (6) can heat the plastic material in the hot runner board (3); 2) the reciprocating straight line motion mechanism (A) can move reciprocally to realize the vibration for the melted high polymer; 3) the spacers (7) can separate the melted high polymer from the nozzle, control the frequency of reciprocating movement of the reciprocating straight line motion mechanism (A) to make the melted high polymer enter the different positions of the mould cavity according to priority for the purpose of casting in subsequence. The injection mold has the advantages of effectively reducing the product defects, enhancing the product mechanical performance, strengthening the competitiveness of product, reducing the production costs and increasing the economic as well as social benefits.
Description
Technical field:
The present invention is a kind of inner vibration sequence injection mold device and Shooting Technique thereof, and particularly a kind of inner vibration sequence injection mold device and Shooting Technique thereof that is used for injection moulding large mold goods belongs to the renovation technique of injection mold device and Shooting Technique thereof.
Background technology:
Large mold adopts many cast gates now, and mold heated all is to adopt hot flow path to heat outward, and the shortcoming of its existence is that power consumption is bigger.In addition, traditional injection moulding is when melt filling, because die wall temperature (40 ℃～50 ℃) is generally lower, Injection moulded part always demonstrates feature: skin and sandwich layer form.For amorphous polymer, generally be that cold mould surface annex forms one deck thin layer directional material, but, three kinds of main zones usually occur: top layer, inferior epidermal area, sandwich layer for heterogeneous or crystalline polymer.The mobile velocity gradient that exists of melt in die cavity causes the two ends of macromolecular chain to be in the different velocity fields, and macromolecular chain obtains orientation.In cooling stage, this orientation is frozen gets off, and forms to press close to the epidermal area orientation greatly the little structure of center orientation.For crystallization and non-crystalline polymer, the orientation effect has significant effects to the mechanical performance of goods, improves greatly along the mechanical performance of differently-oriented directivity.Simultaneously, because the complexity of polymer shaping, plastic part also easily forms various defectives: overlap, weld mark, air pocket, puncture, injection, viscous flow etc.
Summary of the invention:
The objective of the invention is to consider the problems referred to above and a kind of built-in heating is provided, reduce the inner vibration sequence injection mold device of energy resource consumption.The vibration order injection moulding of the utility model inner vibration sequence injection mold device is owing to adopt timing device control cast gate, make the interior melt of mould enter the diverse location of die cavity in order, can get rid of weld mark phenomenon between two cast gates, so the intensity of goods and apparent mass are greatly improved.
Another object of the present invention is to consider the problems referred to above and provide a kind of built-in heating, the inner vibration sequence injection mold device and the Shooting Technique thereof of minimizing energy resource consumption.
The technical scheme of inner vibration sequence injection mold device of the present invention is: include and place the calandria in the hot runner manifold and place the outer heating collar of hot runner manifold, heating collar is connected with calandria by Re Zui, hot mouth cushion cover, wherein also be equiped with linear reciprocating motion mechanism on the calandria, the outside of calandria is equiped with the partition of motion therewith.
Above-mentioned linear reciprocating motion mechanism) include electromagnetic block, block, electromagnetic block is connected with calandria by block and connector, and electromagnetic block places the side of the electromagnet of its adhesive of control.
Above-mentioned linear reciprocating motion mechanism or include by motor-driven cam, cam promotes the pulley motion that is connected with calandria.
Above-mentioned partition includes the chamber partition of isolated chamber and stirs the stirring partition that vibrates, and calandria includes the heating barred body and places the heater element that heats in the through hole of barred body middle part, and chamber partition and stirring partition are fixed on the lateral wall of heating barred body.
Above-mentioned chamber partition and stirring partition directly are made at the outside of heating barred body, are made of one structure with the heating barred body.
The outside of above-mentioned heating collar is provided with temperature feeling ring.
Above-mentioned hot runner manifold is provided with nozzle, and the both sides of nozzle are connected with heat insulating washer and are connected with central packing ring by the tightening part by fixture respectively; The downside of hot runner manifold by being connected with second heat insulating washer, is connected with second packing ring by the second tightening part respectively.
The above-mentioned connector and the second tightening part are pin, and fixture, tightening part, second fixture are soket head cap screw.
The Shooting Technique of inner vibration sequence injection mold device of the present invention comprises the steps:
1) heating collar is connected power supply, heat is delivered to calandria, so that the plastics in the hot runner manifold are heated;
2) the linear reciprocating motion mechanism on the calandria moves back and forth, and realizes the high polymer of the fusion in the hot runner manifold is vibrated;
3) partition that is contained on the calandria makes the high polymer of fusion separate in nozzle, the frequency that moves back and forth of control linear reciprocating motion mechanism, so that partition is controlled opening and closing of cast gate in required time, make melt in the mold hot flow plate enter the diverse location of die cavity in order, to reach the effect of order cast.
The frequency that moves back and forth of above-mentioned linear reciprocating motion mechanism is by electromagnetic switch or utilize the control of timing device, with the injection moulding order of control cast gate.
The present invention compared with prior art has following advantage:
1) inner vibration sequence injection mold device of the present invention is different from existing many cast gates and heats hot runner mould outward, adopts the structure of built-in heating, reduces energy resource consumption, can effectively utilize the energy, reduces energy loss.
2) scope of the vibration frequency of inner vibration sequence injection mold device of the present invention is very big, and the frequency of electromagnetism may be at 100 times/minute, and the machinery frequency range of cam type one by one can enlarge.
3) apparent viscosity of the melt of Shooting Technique of the present invention in oscillator field is all relevant with vibration frequency, amplitude, die temperature and injection screw rotating speed, increase along with vibration frequency, apparent viscosity is reduced to minimum earlier, substantially remain unchanged after going back up to a certain degree then, but be lower than the apparent viscosity that does not apply when vibrating all the time; Amplitude is big more, and oscillator field is just big more to the influence of apparent viscosity; When very moment mould temperature surpassed fusing point, oscillator field increased to some extent to the influence of apparent viscosity; Screw speed is big more, and oscillator field is just more little to the influence of apparent viscosity.
4) effect of valve is also played in the utilization of Shooting Technique of the present invention, change the opening time of each cast gate, by regulating each Shooting Technique parameter, reach the quality of injecting products, pressure during injection moulding and melt temperature all can be provided with much lowerly, so both can reduce the internal stress of goods, can prevent that again high temperature from threatening the degraded that goods bring, can also eliminate molding product weld marks and bubble effectively, the intensity of goods and apparent mass are greatly improved.
5) Shooting Technique of the present invention not only can be improved the mobile filling of high polymer at the injection stage of product, and at packing stage, uses the pressure differential and the frequency of many cast gates, can effectively change the Forming Quality of product, reduces the defective of product, improves mechanical performance.
6) " the frequency one temperature principle of equal effects is processed thermosensitive polymer, can have and reduce injection pressure and temperature effectively, thereby cut down the consumption of energy, and improves productive rate in Shooting Technique utilization of the present invention.
Vibration order injection moulding new equipment of the present invention and Shooting Technique can effectively reduce the defective of product, improve mechanical performance of products, increase competitiveness of product, reduce production costs, and increase economic benefit and social benefit.
Description of drawings:
Fig. 1 is the structural representation of inner vibration sequence injection mold device of the present invention;
Fig. 2 is contained in structural representation on the calandria (6) for partition (7) among the present invention;
Fig. 3 is the structural representation of middle chamber partition of the present invention (71);
Fig. 4 is for stirring the structural representation of partition (72) among the present invention;
Fig. 5 is partition (7) among the present invention and the structural representation of calandria (6) as one;
Fig. 6 is the profile of A-A among Fig. 5;
Fig. 7 is the profile of B-B among Fig. 5;
Fig. 8 is the structural representation of linear reciprocating motion mechanism (A) among the present invention.
The specific embodiment:
Embodiment:
The structural representation of inner vibration sequence injection mold device of the present invention as shown in Figure 1, include and place the calandria 6 in the hot runner manifold 3 and place hot runner manifold 3 heating collar 1 outward, heating collar 1 is connected with calandria 6 by hot mouth 18, hot mouth cushion cover 2, wherein also be equiped with the A of linear reciprocating motion mechanism on the calandria 6, the outside of calandria 6 is equiped with the partition 7 of motion therewith.
The above-mentioned linear reciprocating motion A of mechanism includes electromagnetic block 4, block 5, and electromagnetic block 4 is connected with calandria 6 by block 5 and connector 8, and electromagnetic block 4 places the side of the electromagnet of its adhesive of control.The outside of above-mentioned heating collar 1 is provided with temperature feeling ring 17.
Above-mentioned hot runner manifold 3 is provided with nozzle 21, and the both sides of nozzle 21 are connected with heat insulating washer 9 and are connected with central packing ring 11 by tightening part 12 by fixture 10 respectively; The downside of hot runner manifold 3 by being connected with second heat insulating washer 13, is connected with second packing ring 15 by the second tightening part 16 respectively.
The above-mentioned connector 8 and the second tightening part 16 are pin, and fixture 10, tightening part 12, second fixture 14 are soket head cap screw.
The above-mentioned linear reciprocating motion A of mechanism can also be a structure shown in Figure 8, includes by motor-driven cam 19, and the pulley 20 that cam 19 promotes to be connected with calandria 6 moves.
The structural representation of above-mentioned partition 7 is shown in Fig. 2,3,4, include the chamber partition 71 of isolated chamber and stir the stirring partition 72 of vibration, calandria 6 includes heating barred body 61 and places the interior heater element of heating barred body 61 middle part through holes, and chamber partition 71 and stirring partition 72 are fixed on the lateral wall of heating barred body 61.
In addition, above-mentioned chamber partition 71 and stirring partition 72 can also directly be made at the outside of heating barred body 61, are made of one structure with heating barred body 61, shown in Fig. 5,6,7,
The Shooting Technique of inner vibration sequence injection mold device of the present invention is characterized in that comprising the steps:
1) heating collar 1 is connected power supply, and heat is delivered to calandria 6, so that the plastics in the hot runner manifold 3 are heated;
2) A of linear reciprocating motion mechanism on the calandria 6 moves back and forth, and realizes the high polymer of the fusion in the hot runner manifold 3 is vibrated;
3) partition 7 that is contained on the calandria 6 makes the high polymer of fusion separate in nozzle, the frequency that moves back and forth of the control linear reciprocating motion A of mechanism, so that partition 7 is controlled opening and closing of cast gate in required time, make melts in the mold hot flow plate 3 enter the diverse location of die cavity in order, to reach the effect of order cast.
The frequency that moves back and forth of the above-mentioned linear reciprocating motion A of mechanism is by electromagnetic switch or utilize the control of timing device, with the injection moulding order of control cast gate.
When the present invention works, can control the action of electromagnetic block 4, calandria 6 is moved back and forth, also can drive, design the track of cam according to the time in injection moulding loop, control the frequency of vibration by the slewing rate of motor with mechanical cam.
The apparent viscosity of melt in oscillator field is all relevant with vibration frequency, amplitude, die temperature and injection screw rotating speed, increase along with vibration frequency, apparent viscosity is reduced to minimum earlier, remains unchanged substantially after then going back up to a certain degree, but is lower than apparent viscosity when not applying vibration all the time; Amplitude is big more, and oscillator field is just big more to the influence of apparent viscosity; When very moment mould temperature surpassed fusing point, oscillator field increased to some extent to the influence of apparent viscosity, utilizes the reduction of viscosity, can reduce injection temperature, and injection pressure helps the moulding of the plastics of high polymer, the product that is injected.Plastic part has also reduced various defectives: overlap, weld mark, air pocket, puncture, injection, viscous flow etc.
By changing vibration frequency, physics, the rapid variation of chemical state and the change of plastic melt flow direction of polymer macromolecule in injection moulding process, make that plastic melt can produce clocklike shear action, orientation phenomenon, crystalline polamer in the forming process, eliminate weld mark and residualinternal stress, these all produce favourable to the intensity of moulding.Under the shearing force effect, polymer macromolecule bond angle and bond distance's change also are forced to produce tensile deformation.When shear action strengthens, when energy surpasses big molecular bond energy, can cause big molecular breakdown degraded, thereby reduce the mechanical property of moulding.And the mechanical properties decrease of the moulding of vibrational energy prevention clocklike.The high molecular orientation of polymer makes strand along arranged by force direction, causes the anisotropy characteristics.The high molecular orientation of polymer is subjected to the influence of filling velocity, processing technology and fillers such as material properties and fiber.For fibre reinforced plastics, the influence of its fiber orientation is bigger, can not ignore.The applying vibration injection moulding helps high molecular orientation, helps improving mechanical performance of products.According to free volume theory as can be known, the motion of macromolecular chain is motion by segment and diffusion and progressively reach mass motion.Macromolecular chain is very big, easily forms nettedly, twines and then constitutes the hole between the node.When introducing the vibration field of force, on the one hand, vibration has increased the mutual shearing friction between the macromolecular chain, produce a large amount of burn-offs, increased high molecular energy of thermal motion, the hole is also along with increasing and swelling, the interaction force that molecule is asked reduces, and causes the wriggling ability of macromolecular chain to strengthen; On the other hand, vibration is constantly pushed polymer melt and is discharged, and has increased the orientation of molecule, and intermolecular hole increases, and strand centre-of gravity shift has also reduced intermolecular interaction force, thereby the flowability of polymer melt is increased.The viscosity that then shows as polymer melt on the macroscopic view reduces, and flow rate increases, and elasticity reduces, and extrusion pressure reduces. and energy consumption reduces.Improved the extrusion process of plastics therefrom, made the performance of goods obtain to a certain degree raising.
Vibration order injection moulding is owing to adopt timing device control cast gate, make the interior melt of mould enter the diverse location of die cavity in order, can get rid of weld mark phenomenon between two cast gates, so the intensity and the apparent mass of goods are greatly improved, simultaneously because the utilization of sequence valve, melt moves the influence that seldom is subjected to the cold burden factor in die cavity, so common relatively injection moulding, the all more common cast gate of pressure during injection moulding and melt temperature can be provided with much lowerly, so also reduce the existence of goods internal stress, and prevented the degraded influence that high temperature brings goods.In addition, because the utilization of sequence valve can reduce injection pressure, so for same goods, identical shape, identical projected area, different injection pressures requires different clamp forces, so it is much lower to the requirement of injection machine to the more common valve gated mold of the requirement of locking force of injection machine to use the mould of sequence valve to make goods.
Be used for the example that is injected into of bumper with the present invention, the result of its analysis contrasts as follows:
1) order injection mo(u)lding injection time more used than common injection mo(u)lding lacked 0.136s;
2) the order injection mo(u)lding is obviously lacked a lot than the weld mark of common injection mo(u)lding.Do not occur in the order injection mo(u)lding at two of common injection mo(u)lding very long weld marks, the declaration order injection mo(u)lding has very significant effect to eliminating weld mark.
3) the order injection mo(u)lding is obviously lacked a lot than the bubble of common injection mo(u)lding.Particularly in common injection mo(u)lding, can not occur by the fashionable bubble that produces in the order injection mo(u)lding by two strands of melts.
Claims (10)
1, a kind of inner vibration sequence injection mold device, include and place the calandria (6) in the hot runner manifold (3) and place the outer heating collar (1) of hot runner manifold (3), heating collar (1) is connected with calandria (6) by hot mouth (18), hot mouth cushion cover (2), it is characterized in that also being equiped with on the calandria (6) linear reciprocating motion mechanism (A), the outside of calandria (6) is equiped with the partition (7) of motion therewith.
2, inner vibration sequence injection mold device according to claim 1, it is characterized in that above-mentioned linear reciprocating motion mechanism (A) includes electromagnetic block (4), block (5), electromagnetic block (4) is connected with calandria (6) by block (5) and connector (8), and electromagnetic block (4) places the side of the electromagnet of its adhesive of control.
3, inner vibration sequence injection mold device according to claim 1 is characterized in that above-mentioned linear reciprocating motion mechanism (A) includes by motor-driven cam (19), and the pulley (20) that cam (19) promotes to be connected with calandria (6) moves.
4, inner vibration sequence injection mold device according to claim 1, it is characterized in that above-mentioned partition (7) includes the chamber partition (71) of isolated chamber and stirs the stirring partition (72) of vibration, calandria (6) includes heating barred body (61) and places the interior heater element of heating barred body (61) middle part through hole, and chamber partition (71) and stirring partition (72) are fixed on the lateral wall of heating barred body (61).
5, inner vibration sequence injection mold device according to claim 1 is characterized in that above-mentioned chamber partition (71) and stirs the outside that partition (72) directly is made at heating barred body (61), is made of one structure with heating barred body (61).
6, inner vibration sequence injection mold device according to claim 1 is characterized in that the outside of above-mentioned heating collar (1) is provided with temperature feeling ring (17).
7, according to each described inner vibration sequence injection mold device of claim 1 to 6, it is characterized in that above-mentioned hot runner manifold (3) is provided with nozzle (21), the both sides of nozzle (21) are connected with heat insulating washer (9) and are connected with central packing ring (11) by tightening part (12) by fixture (10) respectively; The downside of hot runner manifold (3) by being connected with second heat insulating washer (13), is connected with second packing ring (15) by the second tightening part (16) respectively.
8, inner vibration sequence injection mold device according to claim 7 is characterized in that the above-mentioned connector (8) and the second tightening part (16) are pin, and fixture (10), tightening part (12), second fixture (14) are soket head cap screw.
9, the Shooting Technique of inner vibration sequence injection mold device according to claim 1 is characterized in that comprising the steps:
1) heating collar (1) is connected power supply, and heat is delivered to calandria (6), so that the plastics in the hot runner manifold (3) are heated;
2) the linear reciprocating motion mechanism (A) on the calandria (6) moves back and forth, and realizes the high polymer of the fusion in the hot runner manifold (3) is vibrated;
3) partition (7) that is contained on the calandria (6) makes the high polymer of fusion separate in nozzle, the frequency that moves back and forth of control linear reciprocating motion mechanism (A), so that partition (7) is controlled opening and closing of cast gate in required time, make melt in the mold hot flow plate (3) enter the diverse location of die cavity in order, to reach the effect of order cast.
10, the Shooting Technique of inner vibration sequence injection mold device according to claim 9, the frequency that moves back and forth that it is characterized in that above-mentioned linear reciprocating motion mechanism (A) is by electromagnetic switch or utilize the control of timing device, with the injection moulding order of control cast gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710029624A CN101264654B (en) | 2007-08-06 | 2007-08-06 | Inner vibration sequence injection molding die device and injection molding technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710029624A CN101264654B (en) | 2007-08-06 | 2007-08-06 | Inner vibration sequence injection molding die device and injection molding technique thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101264654A true CN101264654A (en) | 2008-09-17 |
| CN101264654B CN101264654B (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710029624A Expired - Fee Related CN101264654B (en) | 2007-08-06 | 2007-08-06 | Inner vibration sequence injection molding die device and injection molding technique thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108215076A (en) * | 2018-01-05 | 2018-06-29 | 惠安耐亚节能科技有限公司 | A kind of new gas recoverable injection mold |
| CN109501048A (en) * | 2018-11-26 | 2019-03-22 | 南安冠玲工业设计有限公司 | A kind of plastic mould waste material recovery device removing magnetic using ferromagnetism |
| CN112519124A (en) * | 2020-11-16 | 2021-03-19 | 内蒙古农业大学 | Injection mould device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE98153T1 (en) * | 1990-03-03 | 1993-12-15 | Guenther Herbert Gmbh | DISTRIBUTOR. |
| CN2568398Y (en) * | 2002-09-26 | 2003-08-27 | 天津理工学院 | Offset cross internally heating multiple pouring heat runner of plastic injection mould |
| CN1283440C (en) * | 2002-12-13 | 2006-11-08 | 四川大学 | Dynamic pressure retaining device of injection moulding for hot runner |
| CN201105498Y (en) * | 2007-08-06 | 2008-08-27 | 广东工业大学 | Inner-oscillation ordered injection mold device |
-
2007
- 2007-08-06 CN CN200710029624A patent/CN101264654B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108215076A (en) * | 2018-01-05 | 2018-06-29 | 惠安耐亚节能科技有限公司 | A kind of new gas recoverable injection mold |
| CN109501048A (en) * | 2018-11-26 | 2019-03-22 | 南安冠玲工业设计有限公司 | A kind of plastic mould waste material recovery device removing magnetic using ferromagnetism |
| CN112519124A (en) * | 2020-11-16 | 2021-03-19 | 内蒙古农业大学 | Injection mould device |
| CN112519124B (en) * | 2020-11-16 | 2023-04-07 | 内蒙古农业大学 | Injection mould device |
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| Publication number | Publication date |
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| CN101264654B (en) | 2010-05-19 |
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Assignee: Dongguan Jusheng Plastic & Electronics Products Ltd. Assignor: Guangdong University of Technology Contract record no.: 2011440000018 Denomination of invention: Inner vibration sequence injection molding die device and injection molding technique thereof Granted publication date: 20100519 License type: Exclusive License Open date: 20080917 Record date: 20110104 |
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Granted publication date: 20100519 Termination date: 20170806 |