CN202225402U - Device for cooling injection mold and drying materials - Google Patents
Device for cooling injection mold and drying materials Download PDFInfo
- Publication number
- CN202225402U CN202225402U CN2011203419466U CN201120341946U CN202225402U CN 202225402 U CN202225402 U CN 202225402U CN 2011203419466 U CN2011203419466 U CN 2011203419466U CN 201120341946 U CN201120341946 U CN 201120341946U CN 202225402 U CN202225402 U CN 202225402U
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- cooling
- heat exchanger
- injection mold
- material drying
- drying device
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Abstract
The utility model discloses a device for cooling an injection mold and drying materials, which comprises a cooling system and a material drying system. The cooling system comprises a compressor (1), a first heat exchanger (2), a throttling element (3) and a connecting pipeline (4), and the injection mold (5) is provided with a cooling loop (6) which is provided with two inlets and two outlets. The material drying system comprises a feed hopper (9), an air pipe (10) and a fan (11), and the first heat exchanger (2), the feed hopper (9) and the fan (11) are connected in series through the air pipe (10). By the aid of the device for cooling the injection mold and drying the materials, the injection mold can be cooled uniformly so that defects caused by the fact that products are partially contracted too fast are avoided, and quality of the products is improved. Meanwhile, the cooling system and the drying system are integrated, and utilization rate of energy sources is increased.
Description
Technical field
The utility model relates to the injection mold field, is a kind of cooling and material drying device of injection mold specifically.
Background technology
In injection moulding, the temperature of mould directly has influence on Products Quality and production efficiency.Because it is the performance of various plastics is different with the moulding process requirement, also different to the requirement of mold temperature.The temperature that generally is expelled to plastics in the mould is about 200-300 ℃; After melt is solidified into goods; When mold temperature is lower, goods are carried out the demoulding; The reduction of mold temperature mainly relies on and feeds cooling medium in the mould, and heat is taken away, and depends primarily on the cooling effect of cooling system the cool time of injection mould.According to statistics, account for 2/3 of the whole infusion cycles cycle cool time of mould, be the key of enhancing productivity the cool time that therefore shortens infusion cycles cycle mould.Current to the mold cools down method more be to be cooled with circulating water, when mold cools down is had relatively high expectations, usually adopt cooling-water machine to cool off.
After creating for some plastic grain raw material, be exposed in the air particle surface airborne moisture that condensed; In the HTHP forming process; When moisture evaporated in appearance barrel that seals and mould, the space that formation density differs in size, color, density unevenness were spared, and cause the product quality that processes defective; For this type plastics, must heat drying before moulding.Current to the plastics drying means more a drying machine is set separately, utilize electric heater to assign to evaporate the plastics moisture, with the plastics heat drying through heat.
The cooling of prior art and material drying device mainly contain following shortcoming: (1), mold cools down and dry materials are two cover autonomous systems, and a cover is refrigeration system, and another set of is heating system, and two cover systems do not have Combinatorial Optimization; (2), cooling system service time of a specified duration after, the solid deposits in the water is prone to fouling in the cooling circuit of mould, reduce heat transfer efficiency, causes thermal loss; (3), during cooling die, the temperature of water will raise, there is certain temperature difference in the mould water in-out port, it is uneven and cause quality of item to descend to be easy to generate temperature control; (4), a large amount of heats of cooling water absorption mould are not fully used; (5), when dry materials; As adopt open type dry, and the humid air with higher temperature is directly discharged, and the energy is not fully used; Adopt not dry with the closed cycle of dehumidification function; Circulating air has higher humidity all the time, and it is not obvious that hopper is imported and exported psychrometric difference, and its drying effect is also undesirable.
The utility model content
The technical problem that the utility model will solve is, provides a kind of and collects dry materials and mold cools down is the cooling and the material drying device of the injection mold of one, can make injection mold is evenly cooled off, and cooling circuit is less scaling, and very energy-conservation.
The technical solution of the utility model is; A kind of cooling and material drying device of injection mold of following structure are provided, comprise cooling system and material drying system, described cooling system comprises compressor, first heat exchanger, restricting element and connecting line; On injection mold, be provided with cooling circuit; Described cooling circuit is provided with two import and export, and the exhaust end of described compressor connects first heat exchanger, and the other end of first heat exchanger is connected with restricting element; The other end of restricting element and first is imported and exported and is connected, and the inlet end of compressor and second is imported and exported and is connected; Described material drying system comprises hopper, airduct and blower fan, and described first heat exchanger, hopper and blower fan are connected through airduct.
Adopt above structure; The utility model compared with prior art has the following advantages: adopt the utility model structure, be used to cool off the evaporation latent heat that required cold comes from cold-producing medium, cold-producing medium maintains the corresponding temperature of its saturation pressure; The out temperature of cooling circuit is constant basically; So very even to the cooling of mould, can not cause the local too fast contraction of goods to form defective, improved Products Quality; Because cold-producing medium be gaseous state in cooling circuit, can fouling in the loop, it is fast to conduct heat, the cooling effectiveness height; Emit heat through after the first heat exchanger condensation, under the effect of blower fan, carry out air-dry the plastic grain in the hopper; Not only that cooling system and material drying system is integrated; The heat that has also utilized the first heat exchanger condensation to produce has improved energy utilization rate, and is very energy-conservation.
As improvement, described cooling system also comprises second heat exchanger, and described second heat exchanger is connected between the inlet end and second import and export of compressor through connecting line; Second heat exchanger is also connected with first heat exchanger through airduct; Like this, second heat exchanger and mould have served as the function of evaporimeter jointly, to cooling system; Second heat exchanger is auxiliary evaporimeter; And be to dewater to its function of material drying system, setting up second heat exchanger has improved drying effect, and has improved the stability of cooling system.
As improvement; Also be provided with heater in the described airduct; Drying not opening heat that the cooling system or first heat exchanger discharge when not enough, can heater be carried out to material in the position of described heater between hopper and blower fan; The heat that heater produces carries out heat drying to material under the effect of blower fan, improved the dry materials effect.
As improvement; Described cooling and material drying device also comprise controller; Described controller is electrically connected with compressor and blower fan, can control the operating frequency of compressor through controller, thereby changes its refrigerating capacity; Controller can also be regulated the size of the wind-force of blower fan as required, has improved the controllability of this product.
As improvement, described controller also is electrically connected with heater, to the power of controller adjusting heater, can select different working conditions according to different material.
As improvement, the lower side of described hopper is for being provided with air inlet, and the top of hopper is provided with the gas outlet, and described air inlet and place, gas outlet are equipped with screen pack, can prevent effectively that through setting up screen pack impurity or material from getting in the airduct.
As improvement, the bottom of described second heat exchanger is provided with water-collecting tray, like this, after to the hot-air heat absorption, hot air temperature is reduced, and the water that freeze-outs has improved drying effect through the water-collecting tray collection and treatment.
Description of drawings
Accompanying drawing is cooling and the structural representation of material drying device of the injection mold of the utility model.
As shown in the figure: 1, compressor, 2, first heat exchanger, 3, restricting element, 4, connecting line, 5, injection mold; 6, cooling circuit, 7, first imports and exports, and 8, second imports and exports, and 9, hopper; 10, airduct, 11, blower fan, 12, second heat exchanger, 13, heater; 14, plug, 15, deflection plate, 16, screen pack, 17, water-collecting tray.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
As shown in the figure; The cooling of the injection mold of the utility model and material drying device comprise cooling system and material drying system, and described cooling system comprises compressor 1, first heat exchanger 2, restricting element 3 and connecting line 4; On injection mold 5, be provided with cooling circuit 6; Described cooling circuit 6 is provided with two import and export, and the other end that the exhaust end of described compressor 1 connects first heat exchanger, 2, the first heat exchangers 2 is connected with restricting element 3; The other end of restricting element 3 and first is imported and exported 7 and is connected, and the inlet end of compressor 1 and second is imported and exported 8 and is connected; Described material drying system comprises hopper 9, airduct 10 and blower fan 11, and described first heat exchanger 2, hopper 9 and blower fan 11 are through airduct 10 series connection.
Described cooling system also comprises second heat exchanger 12, and described second heat exchanger 12 is imported and exported between 8 through the inlet end and second that connecting line 4 is connected compressor 1, and second heat exchanger 12 is also connected with first heat exchanger 2 through airduct 10.
Also be provided with heater 13 in the described airduct 10, the position of described heater 13 between hopper 9 and blower fan 11.
Described cooling and material drying device also comprise controller 14, and described controller 14 is electrically connected with compressor 1 and blower fan 11; Described controller 14 also is electrically connected with heater 13.
The import and export that described first import and export and second are imported and exported to cold-producing medium on the injection mold, when freezing, first import and export are import, second imports and exports to exporting; Described cooling circuit is for sealing, because cooling circuit is in processing, many positions in loop are got through, thus need employing plug 14 with its sealing, and in the loop, be provided with deflection plate 15, deflection plate can make the working medium one-way flow, and anti-backflow.
The lower side of described hopper 9 is for being provided with air inlet, and the top of hopper is provided with the gas outlet, and described air inlet and place, gas outlet are equipped with screen pack 16.
The bottom of described second heat exchanger 12 is provided with water-collecting tray 17.
The operation principle of the utility model is following: compressor and starting at first, cold-producing medium are under the compressor effect, and pressure increases; Temperature raises, and the gaseous refrigerant that becomes HTHP enters into first heat exchanger, and this moment, first heat exchanger played the condenser effect of refrigeration system; The cold-producing medium and the interior air heat exchange of first heat exchanger of flowing through are condensed into highly pressurised liquid with cooling behind the heat transferred air, through becoming the two-phase mixture of low-temp low-pressure after the restricting element throttling; Enter into the cooling circuit of mould, in cooling circuit, evaporate, from mould, absorb its needed gasification latent heat; At this moment, mould is equivalent to the evaporimeter effect of refrigeration system; Cold-producing medium is through behind the cooling circuit; The gas (if the heat deficiency also possibly be the damp steam of low-temp low-pressure) that becomes low-temp low-pressure enters into second heat exchanger; Cold-producing medium continue to absorb through the flow through heat of the second heat exchanger air of airduct; Enter into compressor, so reciprocation cycle realizes the cooling of injection mold.
On the other hand, material drying system need carry out drying to the plastic grain of easy moisture absorption, when air during through first heat exchanger; Absorb heat, temperature raises and becomes the hot blast of high temperature low humidity, and the process airduct enters into the lower end of hopper from air inlet under fan action; Material gets into from top to bottom, and hot blast moves from the bottom up, and hot blast fully contacts with material; Go out from the upper end of hopper after moisture in the absorption material becomes humid air, through behind the screen pack, the molecule that humid air is taken away in hopper is filtered; Enter into second heat exchanger, humid air is absorbed heat by second heat exchanger, and temperature is reduced to it below dew point; Separate out moisture and take away through the water-collecting tray of the second heat exchanger lower end, air becomes the air of low temperature and low humidity, becomes in the air entering hopper of high temperature low humidity through first heat exchanger absorption heat again; Circulate so repeatedly, reach the purpose of dried material.
Whether heater works according to circumstances, if the heat that first heat exchanger is provided enough carries out drying with material, then heater is not worked.If the shortage of heat that first heat exchanger is provided is with dry materials, then with heater work, the required heat that provides of heater can be regulated through controller, to improve energy use efficiency.
Below only be described, but can not be interpreted as it is restriction claim with regard to the utility model preferred embodiment.The utility model not only is confined to above embodiment, and its concrete structure allows variation.In a word, all various variations of in the protection domain of the utility model independent claims, being done are all in the protection domain at the utility model.
Claims (7)
1. the cooling of an injection mold and material drying device; It is characterized in that: comprise cooling system and material drying system; Described cooling system comprises compressor (1), first heat exchanger (2), restricting element (3) and connecting line (4), on injection mold (5), is provided with cooling circuit (6), and described cooling circuit (6) is provided with two import and export; The exhaust end of described compressor (1) connects first heat exchanger (2); The other end of first heat exchanger (2) is connected with restricting element (3), and the other end of restricting element (3) and first is imported and exported (7) and is connected, and the inlet end of compressor (1) and second is imported and exported (8) and is connected; Described material drying system comprises hopper (9), airduct (10) and blower fan (11), and described first heat exchanger (2), hopper (9) and blower fan (11) are connected through airduct (10).
2. the cooling of injection mold according to claim 1 and material drying device; It is characterized in that: described cooling system also comprises second heat exchanger (12); Described second heat exchanger (12) is imported and exported between (8) through the inlet end and second that connecting line (4) is connected compressor (1), and second heat exchanger (12) is also connected with first heat exchanger (2) through airduct (10).
3. the cooling of injection mold according to claim 1 and material drying device, it is characterized in that: also be provided with heater (13) in the described airduct (10), described heater (13) is positioned at the position between hopper (9) and the blower fan (11).
4. according to the cooling and the material drying device of claim 1 or 3 described injection molds, it is characterized in that: described cooling and material drying device also comprise controller (14), and described controller (14) is electrically connected with compressor (1) and blower fan (11).
5. the cooling of injection mold according to claim 4 and material drying device, it is characterized in that: described controller (14) also is electrically connected with heater (13).
6. the cooling of injection mold according to claim 1 and material drying device; It is characterized in that: the lower side of described hopper (9) is for being provided with air inlet; The top of hopper (9) is provided with the gas outlet, and described air inlet and place, gas outlet are equipped with screen pack (16).
7. the cooling of injection mold according to claim 1 and material drying device, it is characterized in that: the bottom of described second heat exchanger (12) is provided with water-collecting tray (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203419466U CN202225402U (en) | 2011-09-09 | 2011-09-09 | Device for cooling injection mold and drying materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203419466U CN202225402U (en) | 2011-09-09 | 2011-09-09 | Device for cooling injection mold and drying materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202225402U true CN202225402U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203419466U Expired - Lifetime CN202225402U (en) | 2011-09-09 | 2011-09-09 | Device for cooling injection mold and drying materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202225402U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358017A (en) * | 2011-09-09 | 2012-02-22 | 中国计量学院 | Cooling and material drying apparatus for injection mold |
| CN103331836A (en) * | 2013-06-26 | 2013-10-02 | 苏州长发塑胶有限公司 | Hopper drying device |
-
2011
- 2011-09-09 CN CN2011203419466U patent/CN202225402U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358017A (en) * | 2011-09-09 | 2012-02-22 | 中国计量学院 | Cooling and material drying apparatus for injection mold |
| CN102358017B (en) * | 2011-09-09 | 2013-08-21 | 中国计量学院 | Cooling and material drying apparatus for injection mold |
| CN103331836A (en) * | 2013-06-26 | 2013-10-02 | 苏州长发塑胶有限公司 | Hopper drying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120523 Effective date of abandoning: 20130821 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120523 Effective date of abandoning: 20130821 |
|
| RGAV | Abandon patent right to avoid regrant |