CN204249295U - Electromagnetic induction screw low-pressure glue-injection equipment - Google Patents
Electromagnetic induction screw low-pressure glue-injection equipment Download PDFInfo
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- CN204249295U CN204249295U CN201420706131.7U CN201420706131U CN204249295U CN 204249295 U CN204249295 U CN 204249295U CN 201420706131 U CN201420706131 U CN 201420706131U CN 204249295 U CN204249295 U CN 204249295U
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Abstract
The utility model provides a kind of electromagnetic induction screw low-pressure glue-injection equipment, comprise fluxing zone and injecting glue section, described fluxing zone is used for melten gel, described injecting glue section is used for melten gel to inject destination apparatus, described fluxing zone comprises the screw rod be connected with described injecting glue section and one first electromagnetic induction device, described screw rod is rotatable to shear and to carry described melten gel, and described first electromagnetic induction device, for heating described screw rod, melts to make sizing material.The utility model has the advantage of, programming rate is fast, the thermal efficiency is high and melten gel utilization rate is high.
Description
Technical field
The utility model relates to low-pressure glue-injection field, particularly relates to the electromagnetic induction screw low-pressure glue-injection equipment that a kind of electromagnetic induction heating and screw injection combine.
Background technology
The development of electromagnetic induction heating technology: since 19th-century people in latter stage start to utilize inductive loop to heat in the industry, makes remarkable progress in the research so far no matter at induction heating technique or the practical application at eddy-current heating all.Present induction heating technique has been widely applied to the every field of national economy.Abroad, induction heating technique reaches its maturity, is devoted to now exploitation high-power all-solid-state high frequency electric source and the complete treatment system of the supermatic heat treatment of exploitation, in China, along with the supply of power system, eddy-current heating also trends towards high frequency, high capacity development.Day by day obvious in the importance controlling induction heating technique in gold machinery, light industry chemical experiment research and sophisticated technology at present.To electric heating field research and analyse and optimal design improves eddy-current heating efficiency key point, theoretical foundation can be provided for the design of induction heating apparatus and improvement.
The development of screw rod injection molding technology: 1988, Osamu and Shzrou etc. are by installing the small-sized special thermocouple of a depth adjustable at nozzle place, measure melt in storage compartment along the Temperature Distribution of screw axial and the distribution of radial three dimensional temperature, analyze the impact that the plasticizing process conditions such as screw speed, molding cycle, barrel temperature and back pressure distribute on melt temperature, and the melt temperature distribution in storage compartment depends primarily on the geometry of screw rod.1989, vethraak etc. installed pyriform or Maddock/gan hybrid element on screw rod, or installed static mixer at nozzle place, or arranged one or two joint barrier screen, or these elements are combined mutually tested.Result shows, multiwave Maddock screw rod has best mixed performance; Temperature survey shows that the plasticizing capacity with the screw rod hindering element is best, and can shorten the machine-shaping cycle.Experiment also shows, the effect improving the structural rate raising injection cylinder back pressure of screw rod will be got well.In the same year, Peischle and Bruker is studied the Melt Temperature Homogeneity in storage compartment by the Ring-Bar device developed voluntarily.1991, Amino etc. have studied a kind of can the new method of flowing copolymer temperature in Measurement accuracy injection mo(u)lding.Screw rod by this method design has the advantages that plasticizing efficiency is high, melt temperature is homogeneous, melting effect is good.1996, Horie etc. in order to injection mo(u)lding phenol mixture better, devise a kind of contribute to improving mixture temperature and the head reducing its firewood degree with the screw rod hindering element.2003, Jin Zhiming etc. pass through infrared radiation thermometer and computer on-line acquisition system, measure the material temperature difference along screw axial, analyze the temperature difference and the relation between fabrication process condition and Screw Parameters, draw the material temperature difference formation mechenism along screw axial.In the same year, Jin Zhiming etc. have studied the melting process of injection screw with utilizing visual system, have carried out desk study to the solid bed breakup mechanism in injection moulding plasticizing system.2004, spalding etc. installed hook-shaped hybrid element on the high performance screws head of DMZ, compared with common screw rod, which reduced injection moulding cycle and percentage of damage, improve melting amount and mixed effect.2005, Jin Zhiming etc., by visualized experiment and on-line data acquisition system, have studied Maddock injection screw from aspects such as melting, temperature homogeneity, plasticizing capacities.2008, Beijing University of Chemical Technology Lee generation is protected and is studied the evaluation method of injection screw plasticizing capacity and energy consumption, by the energy consumption in measurement plasticizing process and fusion time, analyze the not threaded plasticizing output in plasticizing process of contrast and specific energy consumption, from plasticizing quality, not threaded plasticizing capacity is evaluated simultaneously.2009, woods was grand in ultrasonic detection method, is evaluated to inorganic particulate dispersing uniformity, residence time destribution and Mechanical Properties of Products three aspects not threaded mixing ability.2010, Beijing University of Chemical Technology Zhou Yawen carried out evaluation analysis from aspects such as the signs of the temperature homogeneity of the repeating weight precision of goods, plasticized melt, the viscosity homogeneity of melt, the metering accuracy of screw rod and screw mixes ability to screw performance.
At present, also electromagnetic heating technique and screw rod injecting glue combine with technique are not got up to be applied on injection-moulding device.
Low-pressure injection molding equipments all is at present all by glue cylinder 6, sebific duct 7, and injection molding machine 8 forms, as shown in Figure 1.Wherein glue cylinder 6 adopts heating rod (attached not shown in the figures) to heat, mainly play the effect of melten gel, melten gel is made to enter sebific duct by the effect of gear pump (attached not shown in the figures), sebific duct 7 adopts resistance wire to heat, mainly play the effect of conveying melten gel, glue rifle (attached not shown in the figures) on another termination injection molding machine 8 of sebific duct 7, injecting glue is carried out by glue rifle, wherein injection molding machine 8 is main parts of equipment, and all injecting glue action controls and enforcement are all carried out on injection molding machine 8.
Although low-pressure glue-injection machine present at present solves the problem of injecting glue under low-pressure low-temperature, also there is the problem that much cannot overcome:
(1) efficiency of heating surface: resistance wire and heating rod heating, efficiency is low, length consuming time, and heat loss is high, and the electric energy of waste causes again workshop condition temperature to rise, greatly shortening injection machine service life.
(2) PUR utilization rate: adopt the mode of gear pump, due to the birth defect of gear pump frame for movement, makes to occur in injecting glue process to leak the problems such as glue, injecting glue be irregular.
(3) heating and temperature control: the heat transfer process more complicated of heating process, also there is heat loss in each process, causes the hysteresis quality of heating larger, difficult control of temperature.
(4) bubble: in the fusion process of melten gel, unavoidable meeting creating pockets of air is as the steam of feed particles gap bubble, raw material self bubble (resin gas) and feed particles, make the quality affecting product when injecting glue, make product produce shrink phenomenon, the dielectric constant of product can be affected.
(5) injection pressure controls: in injecting glue process, injection pressure is too high, causes product to overflow glue phenomenon, product chips is produced to the hidden danger damaged; Injection pressure is too low, and injecting glue is not full, produce subside, shrink phenomenon in injection moulding process, there is bubble and distortion after PUR can be caused to cool in the instability of injection pressure, affects the performance of product.
Utility model content
Technical problem to be solved in the utility model is, provide a kind of electromagnetic induction screw low-pressure glue-injection equipment, its programming rate is fast, the thermal efficiency is high and melten gel utilization rate is high.
In order to solve the problem, the utility model provides a kind of electromagnetic induction screw low-pressure glue-injection equipment, comprise fluxing zone and injecting glue section, described fluxing zone is used for melten gel, described injecting glue section is used for melten gel to inject destination apparatus, and described fluxing zone comprises the screw rod be connected with described injecting glue section and one first electromagnetic induction device, and described screw rod is rotatable to shear and to carry described melten gel, described first electromagnetic induction device, for heating described screw rod, melts to make sizing material.
Further, described first electromagnetic induction device is the electromagnetic induction coil being wound around described screw rod, and described first electromagnetic induction coil makes described screw rod generate heat, and to add hot gluse size, makes it form melten gel.
Further, described injecting glue section comprises injecting glue plunger and ejecting gun, promotes described injecting glue plunger and described melten gel can be squeezed into described ejecting gun, and described ejecting gun is used for described melten gel to inject described destination apparatus.
Further, described glue injection equipment also comprises a grating scale be connected with described injecting glue plunger, and described grating scale is used for measuring injecting glue plunger displacement in real time, and then controls injecting glue amount.
Further, described glue injection equipment also comprises one first cylinder, and described first cylinder is connected with described injecting glue section, moves for promoting described injecting glue plunger.
Further, described fluxing zone comprises the runner of the described screw rod of a connection and described injecting glue section, and described screw rod can be used for closed described runner, to make described fluxing zone and described injecting glue section cut off, and then makes described injecting glue section keep constant voltage.
Further, described glue injection equipment also comprises a pressure monitoring device, for Real-Time Monitoring injection pressure.
Further, injecting glue section also comprises one second electromagnetic induction device, described second electromagnetic induction device for heating described injecting glue section, to be incubated described melten gel.
The utility model has the advantage of,
(1) thermal efficiency improves: change original Resistant heating into Electromagnetic Heating, the eddy-current heating utilizing electromagnetic induction to produce in metallic conductor is to reach the object of heating cylinder, the energy transferring of eddy-current heating carries out in the form of an electromagnetic wave, very little by extraneous interference, energy dissipation is few, the efficiency of heating surface is high, and environmental pollution is little, the efficiency of heating surface is high, preheating time is short, noncontact heating;
(2) PUR utilization rate improves: give up original gear pump injecting glue mode, adopt screw melten gel and conveying glue, quantitative glue injection is carried out by injecting glue plunger, reduce the wastage of material in injecting glue process, make injecting glue speed more mild, evenly, can improve in injecting glue process there will be simultaneously and leak glue and the uneven phenomenon of injecting glue speed;
(3) temperature controls: due to employing is electromagnetic induction heating mode, and heating-up temperature is internally conducted by surface of the work heat, by controlling frequency and the power of heating output current, and can heat the time used, controlling the temperature heated;
(4) bubble is eliminated: by the research of screw rod suitability, best screw diameter, stroke, the draw ratio of screw rod, spiral groove depth, screw compression ratio, screw speed and screw strength can be obtained, effectively eliminate the impact of bubble on low-pressure injection molding product;
(5) Stress control: compared with traditional glue-injection machine, add pressure control function, installs a pressure sensor Real-Time Monitoring injection pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art mesolow glue injection equipment;
Fig. 2 is the perspective view of the utility model electromagnetic induction screw low-pressure glue-injection equipment;
Fig. 3 is the cross section structure schematic diagram of the utility model electromagnetic induction screw low-pressure glue-injection equipment.
Detailed description of the invention
Elaborate below in conjunction with the detailed description of the invention of accompanying drawing to the electromagnetic induction screw low-pressure glue-injection equipment that the utility model provides.
See Fig. 2 and Fig. 3, the utility model electromagnetic induction screw low-pressure glue-injection equipment comprises fluxing zone 1 and injecting glue section 2.
Described fluxing zone 1 is for melten gel.In this embodiment, described fluxing zone 1 is connected with a magazine 3, and solid gum stock inputs in described fluxing zone 1 by described magazine 3.Described fluxing zone comprises the screw rod be connected with described injecting glue section 2 11 and one first electromagnetic induction device 13.Described screw rod 11 is rotatable to shear and to carry described sizing material and melten gel.Described screw rod 11 drives by a servomotor 15 and the second cylinder 16 and rotates.Described first electromagnetic induction device 13, for heating described screw rod 11, melts as liquid melten gel to make solid gum stock.In this embodiment, described first electromagnetic induction device 13 is the electromagnetic induction coils being wound around described screw rod 11, and described screw rod 11 adopts metal material to make.After passing into power supply, electromagnetic induction produces eddy current in metallic conductor (i.e. screw rod 11), effect due to electromagnetic induction coil makes screw rod 11 temperature rise rapidly simultaneously, rotating screw bolt 11 in heating process also advances sizing material, thus the sizing material under the two-way function of electromagnetic induction coil and screw rod 11, barrel 3 being entered can rapid melting.
Described fluxing zone 1 also comprises the runner 12 of the described screw rod of a connection 11 and described injecting glue section 2.Described screw rod 11 1 aspect is for promoting described melten gel, described melten gel is made to be full of described injecting glue section 2 by described runner 12, described screw rod 11 can be used for closed described runner 12 on the other hand, to make described fluxing zone 1 cut off with described injecting glue section 2, and then makes described injecting glue section 2 keep constant voltage.In this embodiment, described runner 12 is adpting flanges.
Described injecting glue section 2 is for injecting destination apparatus (accompanying drawing does not indicate) by melten gel.Described injecting glue section 2 comprises injecting glue plunger 21 and ejecting gun 22.Promote described injecting glue plunger 21 melten gel entering described injecting glue section 2 to be squeezed in described ejecting gun 22.The mode adopting injecting glue plunger 21 to carry out the defeated glue of injecting glue can improve service life greatly, has saved operating cost.Further, described glue injection equipment also comprises one first cylinder 4, and described first cylinder 4 is connected with described injecting glue section 1, moves for promoting described injecting glue plunger 21.
Described ejecting gun 22 is for aiming at described destination apparatus and further described melten gel being injected destination apparatus.Described ejecting gun 22 comprises a spring (not indicating in accompanying drawing), and sprays road (not indicating in accompanying drawing) and one and described spring contact and the needle-valve (in accompanying drawing do not indicate) coaxial with described injection road.Described needle-valve can overcome the pretightning force of described spring and allow melten gel to enter described injection road.The pretightning force of described spring can not be too large, can not be too little, as too large, needle-valve can be caused not open, can not realize injecting glue; As too little, just do not reach the object of Self Adaptive Control.Melten gel enters ejecting gun 22 by the effect of injecting glue plunger 21, and the pressure in ejecting gun 22 is raised, and needle-valve overcomes the resistance of spring, draws back, and needle-valve is disengaged with injection road, and melten gel injects destination apparatus through spraying road.After injecting glue completes, carry out pressurize certain hour, spring reset, needle-valve blocks injection road, then circulates and sprays next time.
Further described glue injection equipment also comprises a frame 9, and described frame 9 is for support and move described fluxing zone 1 and injecting glue section 2.Described frame 9 comprises one the 3rd cylinder 91, and described 3rd cylinder 91, for driving described injecting glue section 2 further, aims at described destination apparatus to make described ejecting gun 23.
Further, described glue injection equipment also comprises a grating scale 5 be connected with described injecting glue plunger 21, and described grating scale 5 for measuring injecting glue plunger 21 displacement in real time, and then controls injecting glue amount.Adopt grating scale 5 closed-loop control cylinder 4 to run, can Obtaining Accurate each injecting glue time, the distance of injecting glue plunger 21 movement, can control injecting glue amount thus reliably.When promoting injecting glue plunger 21 and travelling forward, grating scale 5 measures injecting glue plunger 21 move distance in real time, be converted into injecting glue quality, when reaching required injecting glue amount, grating scale 5 feeds back signal to cylinder 4, cylinder 4 stops travelling forward, and resets, thus accurate quantification injecting glue amount, raising injecting glue quality.
Further, injecting glue section 2 also comprises one second electromagnetic induction device 26, described second electromagnetic induction device 26 for heating described injecting glue section 2, to be incubated described melten gel.By the temperature adopting the second electromagnetic induction device 26 can effectively control and keep melten gel in injecting glue section 2, when injection moulding of melt is arrived in product, avoid damaging components and parts.In this embodiment, described second electromagnetic induction device 26 is the magnetic induction heater coils being wrapped in described injecting glue section 2 surface.
Further, described glue injection equipment also comprises a pressure monitoring device (not indicating in accompanying drawing), for Real-Time Monitoring injection pressure, thus effectively controls injection pressure, enhances product performance.Further, due to the thermal inertia of temperature, make the control ratio for temperature signal higher in signal of telecommunication difficulty, control so introduce the pid control algorithm optimized temperature, relative to common pid algorithm, its precision is higher.
The running of the utility model electromagnetic induction screw low-pressure glue-injection equipment is as follows:
After passing into power supply, the mode heated by the first electromagnetic induction device 13 is heated the sizing material from barrel 3, and described first electromagnetic induction device 13 is electromagnetic induction coil in this embodiment.Described electromagnetic induction coil is around on screw rod 11, effect due to induction coil makes screw rod 11 temperature rise rapidly simultaneously, rotating screw bolt 11 in heating process also advances sizing material, thus the sizing material under the two-way function of induction coil and screw rod 11, barrel 3 being entered can rapid melting.Through runner 12 after fusing, enter into injecting glue section 2.Second cylinder 16 lead-screw 11, makes screw rod 11 withstand runner 12, and namely close described runner 12, now injecting glue section 2 is in isopiestic state, makes sizing material be unlikely to backflow.After melten gel enters injecting glue section 2, first cylinder 4 is by promoting injecting glue plunger 21 to the control of air pressure, the position that 3rd cylinder 91 promotes ejecting gun 22 can accurately aim at the mark device, the position of injecting glue plunger 21 in injecting glue section 2 is controlled to control gel quantity by grating scale 5, melten gel is injection in ejecting gun 22, thus reach can the object of fast quantification injecting glue.
Wherein an electromagnetic heating controller (not indicating in accompanying drawing) is by 220V, the AC rectification of 50Hz becomes direct current, direct current is converted to the high-frequency high-voltage that frequency is 20-40kHz again, high speed variable-current can produce the alternating magnetic field of change at a high speed when flowing through coil, when the magnetic line of force in magnetic field by producing countless little eddy current during magnetic conductive metal material in metallic object, make the heating at a high speed voluntarily of metal material and screw rod 11 itself, thus reach the object of rapid and uniform heating.And studied by injecting glue efficiency test, continue to optimize the parameters of screw rod 11, obtain the best-fit of screw rod 11.Simultaneously by temperature sensor each process Real-Time Monitoring and control to injecting glue, by pressure sensor Real-Time Monitoring injection pressure, thus reach the object that low-pressure glue-injection accurately controls.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. an electromagnetic induction screw low-pressure glue-injection equipment, comprise fluxing zone and injecting glue section, described fluxing zone is used for melten gel, described injecting glue section is used for melten gel to inject destination apparatus, it is characterized in that, described fluxing zone comprises the screw rod be connected with described injecting glue section and one first electromagnetic induction device, and described screw rod is rotatable to shear and to carry described melten gel, described first electromagnetic induction device, for heating described screw rod, melts to make sizing material.
2. electromagnetic induction screw low-pressure glue-injection equipment according to claim 1, it is characterized in that, described first electromagnetic induction device is the electromagnetic induction coil being wound around described screw rod, and described first electromagnetic induction coil makes described screw rod generate heat, to add hot gluse size, it is made to form melten gel.
3. electromagnetic induction screw low-pressure glue-injection equipment according to claim 1, it is characterized in that, described injecting glue section comprises injecting glue plunger and ejecting gun, promotes described injecting glue plunger and described melten gel can be squeezed into described ejecting gun, and described ejecting gun is used for described melten gel to inject described destination apparatus.
4. electromagnetic induction screw low-pressure glue-injection equipment according to claim 3, it is characterized in that, described glue injection equipment also comprises a grating scale be connected with described injecting glue plunger, and described grating scale is used for measuring injecting glue plunger displacement in real time, and then controls injecting glue amount.
5. electromagnetic induction screw low-pressure glue-injection equipment according to claim 3, it is characterized in that, described glue injection equipment also comprises one first cylinder, and described first cylinder is connected with described injecting glue section, moves for promoting described injecting glue plunger.
6. electromagnetic induction screw low-pressure glue-injection equipment according to claim 1, it is characterized in that, described fluxing zone comprises the runner of the described screw rod of a connection and described injecting glue section, described screw rod can be used for closed described runner, to make described fluxing zone and described injecting glue section cut off, and then described injecting glue section is made to keep constant voltage.
7. electromagnetic induction screw low-pressure glue-injection equipment according to claim 1, it is characterized in that, described glue injection equipment also comprises a pressure monitoring device, for Real-Time Monitoring injection pressure.
8. electromagnetic induction screw low-pressure glue-injection equipment according to claim 1, it is characterized in that, injecting glue section also comprises one second electromagnetic induction device, described second electromagnetic induction device for heating described injecting glue section, to be incubated described melten gel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420706131.7U CN204249295U (en) | 2014-11-21 | 2014-11-21 | Electromagnetic induction screw low-pressure glue-injection equipment |
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| CN201420706131.7U CN204249295U (en) | 2014-11-21 | 2014-11-21 | Electromagnetic induction screw low-pressure glue-injection equipment |
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| CN204249295U true CN204249295U (en) | 2015-04-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400975A (en) * | 2014-11-21 | 2015-03-11 | 常熟康尼格科技有限公司 | Electromagnetic induction screw type low-pressure glue injection equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400975A (en) * | 2014-11-21 | 2015-03-11 | 常熟康尼格科技有限公司 | Electromagnetic induction screw type low-pressure glue injection equipment |
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Address after: 215500, Guanghua Road, Xinzhuang Town, Jiangsu, Changshou City, No. 22 Patentee after: SUZHOU KONIG ELECTRONIC TECHNOLOGY CO., LTD. Address before: 215500, Guanghua Road, Xinzhuang Town, Jiangsu, Changshou City, No. 22 Patentee before: Changshu Konig Technologies Co., Ltd. |