CN211891840U - Independent cooling device of injection molding machine - Google Patents
Independent cooling device of injection molding machine Download PDFInfo
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- CN211891840U CN211891840U CN201922361311.1U CN201922361311U CN211891840U CN 211891840 U CN211891840 U CN 211891840U CN 201922361311 U CN201922361311 U CN 201922361311U CN 211891840 U CN211891840 U CN 211891840U
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Abstract
The utility model discloses an independent cooling device of injection molding machine, include: the device comprises a screw pump oil suction pipe, a screw pump, a motor, a screw pump oil outlet pipe, a copper pipe and aluminum fin type efficient cooler (hereinafter referred to as a fin type efficient cooler), a cooler oil return pipe, a support and a temperature sensor; one end of the screw pump oil suction pipe is communicated with an oil tank of the injection molding machine, and the other end of the screw pump oil suction pipe is communicated with the screw pump; the motor is connected with the screw pump and drives the screw pump to absorb oil; the screw pump is communicated with the front end of the finned efficient cooler through an oil outlet pipe of the screw pump; the rear end of the finned efficient cooler is communicated with one end of a cooler oil return pipe, and the other end of the cooler oil return pipe is communicated with an oil tank; the temperature sensor for detecting the temperature of the oil tank is arranged in the oil tank; the support is fixedly arranged outside the oil tank of the injection molding machine. The utility model discloses cooling time increases by a wide margin, no longer receives the injection molding process change to influence, selects the more excellent fin formula cooler reinforcing radiating effect of heat dispersion for use simultaneously, saves oil mass and water consumption.
Description
Technical Field
The utility model relates to an injection molding machine field, concretely relates to independent cooling device of injection molding machine.
Background
An injection molding machine, also known as an injection molding machine or an injection machine, is a main molding apparatus for molding thermoplastic plastics or thermosetting plastics into plastic products of various shapes by using a plastic molding die, and the injection molding machine can heat the plastics, apply high pressure to the molten plastics, and inject the molten plastics to fill a die cavity.
The process of an injection molding machine can be roughly divided as follows: (1) a mold closing stage: and moving the movable template to attach to the fixed template, so that the mold is closed and locked. (2) And (3) an injection stage: comprises two steps of glue melting and glue injection. Plastic particle raw materials enter an injection screw barrel, a heating device is arranged outside the screw barrel, and plastic particles are heated and melted; at the same time, the plastic fluid in a molten state is injected into the mold cavity by the rotation of the injection screw. (3) Pressure maintaining and cooling stage: keeping the pressure applied to the mold, and waiting for the cooling molding of the plastic product in the mold cavity of the mold; (4) mold opening and demolding: and resetting the movable mould plate, and opening the mould to enable the formed plastic product to fall out.
Most of the injection molding machines used today are hydraulic, and the hydraulic oil generates a large amount of heat during operation, and needs to be cooled. The traditional cooling mode is that a cooler is arranged between an oil return pipeline for injecting and melting glue and an oil tank, and oil return after injection and melting glue is processed by the cooler and finally flows back into the oil tank. In other words, only in the process of injecting and melting glue, cooling treatment can be performed, taking a 2200t type injection molding machine as an example, the maximum heating value of a hydraulic pipeline is 28kw during production, and 2 coolers with the heat exchange requirement of 200kw are required to be adopted in the design of the traditional cooling system, and the reason is that: because the oil liquid can carry out heat exchange through the cooler only in the processes of glue injection and glue melting, the glue injection action time is about 1/8 of the whole cycle time, and the glue melting time is added, namely the time ratio of about 1/3, so that the selected cooler only has the exchange capacity of 1/8-1/3, the calculation is easy to obtain, a 200kw large-exchange-capacity cooler is required, the actually used exchange capacity is 25 kw-67 kw (200 1/8-200 1/3), and the minimum exchange capacity can approximately meet the requirement of heat balance.
Meanwhile, the development trend of the current injection molding machine tends to be less oiled, more and more electric molten glue is used, and a structure with less injected glue and less oiled oil is also formed. Therefore, the oil can not be cooled any more during the melting and partial injection time, and the cooling time of the injection molding machine is only shortened (even lower than the time ratio of 1/8-1/3). In addition, different plastic products have different manufacturing processes, the corresponding injection and melting time of part of the products is shorter, and the available cooling time is also shortened. In order to achieve heat balance, the conventional cooling method only selects a cooler with larger exchange capacity and makes the oil tank larger, and the sufficient heat dissipation effect is obtained by increasing the exchange capacity of the cooler and increasing the oil quantity. This means that the oil and water consumption (more cooling water needs to be introduced into the cooler with large exchange capacity) will be greatly increased, resulting in great waste; the cooler is greatly impacted by the oil and water consumption, so that a fin cooler with a better heat dissipation effect cannot be selected, and the internal fins are easily damaged by the large impact.
The cooling mode of blindly increasing the oil tank and selecting a cooler with large exchange capacity cannot meet the requirement of rapid development of the current injection molding machine.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of prior art, the utility model aims to provide an independent cooling device of injection molding machine, its independent setting is taken the hydraulic oil in the oil tank out through motor and oil pump outside the oil tank of injection molding machine, injects into in the oil tank again after copper pipe + aluminium fin formula cooler (hereinafter be referred to as fin formula cooler for short) cooling treatment.
The utility model discloses a following technical scheme realizes:
a self-contained cooling apparatus for an injection molding machine, comprising: the screw pump oil suction pipe, the screw pump, the motor, the screw pump oil outlet pipe, the finned efficient cooler, the cooler oil return pipe, the bracket and the temperature sensor are arranged on the screw pump; one end of the screw pump oil suction pipe is communicated with an oil tank of the injection molding machine, and the other end of the screw pump oil suction pipe is communicated with the screw pump; the motor is connected with the screw pump and drives the screw pump to absorb oil; the screw pump is communicated with the front end of the finned efficient cooler through an oil outlet pipe of the screw pump; the rear end of the finned efficient cooler is communicated with one end of the cooler oil return pipe, and the other end of the cooler oil return pipe is communicated with the oil tank; the temperature sensor for detecting the temperature of the oil tank is arranged in the oil tank; the support is fixedly arranged outside the oil tank of the injection molding machine, and the screw pump, the motor and the fin type efficient cooler are all fixedly arranged on the support.
Further, the independent cooling device of the injection molding machine further comprises a low-pressure filter; one end of the screw pump oil outlet pipe is communicated with the screw pump, the other end of the screw pump oil outlet pipe is communicated with the upper end of the low-pressure filter, and the lower end of the low-pressure filter is communicated with the front end of the finned high-efficiency cooler.
Further, the independent cooling device of the injection molding machine further comprises a one-way valve and a safety pipe; the check valve is connected to the low-pressure filter, one end of the safety pipe is connected with the check valve, and the other end of the safety pipe is connected with the screw pump.
Further, the independent cooling device of the injection molding machine also comprises a Y-shaped filter; the Y-shaped filter is connected to the water inlet end of the fin-type efficient cooler and is also connected with an external cooling water pipeline.
Further, the independent cooling device of the injection molding machine also comprises an oil suction pipe transition flange; the transition flange of the oil suction pipe is respectively connected with the oil suction pipe of the screw pump and the screw pump.
Further, the independent cooling device of the injection molding machine also comprises a motor flange; the motor flange is respectively connected with the motor and the screw pump.
Furthermore, the independent cooling device of the injection molding machine also comprises an oil outlet pipe transition flange; the oil outlet pipe transition flange is respectively connected with the screw pump oil outlet pipe and the screw pump.
Furthermore, the independent cooling device of the injection molding machine also comprises an oil return pipe transition flange; the oil return pipe transition flange is respectively connected with the cooler oil return pipe and the fin type efficient cooler.
Further, the independent cooling device of the injection molding machine also comprises a one-way valve flange; the check valve flange is respectively connected with the check valve and the low-pressure filter.
Further, the motor is a three-phase asynchronous motor.
Compared with the prior art, the beneficial effects of the utility model reside in that:
through independent cooling device of independent setting outside the oil tank of injection molding machine, as long as the hydraulic oil in the oil tank reaches preset temperature value and just can cool off, refrigerated time increases by a wide margin, no longer confine to in penetrating gluey, the time quantum of melten gel can carry out cooling treatment, cooling time no longer receives technological change (penetrate gluey, the time of melten gel account for than shorten and penetrate gluey few oilization, electronic melten gel) and shortens, select the more excellent fin formula cooler of heat dispersion to strengthen the radiating effect simultaneously.
Firstly, the screw pump absorbs oil from the oil tank at constant power, the flow of oil entering the cooler is controlled, and no large impact is caused on the cooler, so that a fin type efficient cooler with better heat dissipation effect (fins inside the cooler are not easy to be impacted) can be selected, and the cooling effect is enhanced.
Secondly, as the cooling time is increased and the cooling effect is better, the oil tank does not need to be enlarged and the oil quantity does not need to be increased for heat dissipation, the oil consumption is saved, and the occupied area of the oil tank is reduced; practice proves that the independent cooling device can save the oil consumption by 20-40%.
Because the oil consumption is reduced and a cooler with large exchange capacity is not required to be selected, on one hand, the heat exchange utilization rate of the cooler can be improved, and on the other hand, the water consumption of the cooler can be saved (the cooling water required to be introduced into the cooler with large exchange capacity is larger); in addition, the independent cooling device is independently cooled by absorbing oil, and when the temperature does not reach the threshold value, an oil pump does not need to be started, so that compared with the prior art that water needs to be continuously supplied to the cooler and the independently cooled fin type small cooler device can greatly save water consumption; practice proves that the independent cooling device can save water consumption by 20-40%.
Because the flow of the oil is reduced, the pressure loss of the return oil is reduced, and most of the return oil pressure loss can be converted into the heat energy of the oil, the oil temperature can be controlled by reducing the return oil pressure loss, and the heat generation can be reduced; practice proves that the return oil pressure loss of the independent cooling device is reduced by 10-30%.
The independent cooling device is not affected by the adjustment of the injection molding process and can better adapt to the future development trend of the injection molding machine. Particularly, no matter how long the time for injecting and melting glue is in the production takt of different products, and the structure of electric melting glue and less oil injection is adopted by the injection molding machine in the future, the length of the cooling time of the independent cooling device cannot be influenced; as long as the temperature reaches the threshold value, the independent cooling device can absorb oil for cooling, and the oil is injected into the oil tank again after being cooled to the proper temperature.
Drawings
FIG. 1 is a schematic view of the present invention in an installed state (when assembled in an injection molding machine);
fig. 2 is a perspective view of the present invention;
fig. 3 is another perspective view of the present invention;
fig. 4 is a front view of the present invention;
fig. 5 is a hydraulic oil circuit diagram of the present invention.
In the figure: 1. a separate cooling device; 2. a frame of an injection molding machine; 10. a screw pump oil suction pipe; 20. a screw pump; 30. a motor; 40. an oil outlet pipe of the screw pump; 50. a finned high efficiency cooler; 60. a cooler oil return pipe; 70. a support; 80. a low pressure filter; 90. a one-way valve; 100. a safety tube; 110. a Y-type filter; 120. an oil suction pipe transition flange; 130. a motor flange; 140. an oil outlet pipe transition flange; 150. an oil return pipe transition flange; 160. a one-way valve flange.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
The utility model discloses an independent cooling device 1 of injection molding machine for the hydraulic oil of cooling injection molding machine hydraulic system. Referring to fig. 1, a self-contained cooling apparatus 1 is mounted within an injection molding machine frame 2 and is located outside an injection molding machine fuel tank.
Referring to fig. 2 and 4, the present invention includes: the screw pump oil suction pipe comprises a screw pump oil suction pipe 10, a screw pump 20, a motor 30, a screw pump oil outlet pipe 40, a finned high-efficiency cooler 50, a cooler oil return pipe 60, a support 70, a temperature sensor (not shown), a low-pressure filter 80, a one-way valve 90, a safety pipe 100 and a Y-shaped filter 110. Wherein, one end of the screw pump oil suction pipe 10 is communicated with an oil tank of the injection molding machine, and the other end is communicated with the screw pump 20; the motor 30 is in transmission connection with the screw pump 20 and is used for driving the screw pump 20 to absorb oil from the oil tank; the screw pump 20 is communicated with the front end of the finned high-efficiency cooler 50 through a screw pump oil outlet pipe 40, a low-pressure filter 80 and the front end of the finned high-efficiency cooler 50, specifically, one end of the screw pump oil outlet pipe 40 is communicated with the screw pump 20, the other end of the screw pump oil outlet pipe is communicated with the upper end of the low-pressure filter 80, and the lower end of the low-pressure filter 80 is communicated with the front end of the finned high-efficiency cooler; the rear end of the finned efficient cooler 50 is communicated with one end of a cooler oil return pipe 60, and the other end of the cooler oil return pipe 60 is communicated with an oil tank; the temperature sensor for detecting the temperature of the oil tank is arranged in the oil tank; the bracket 70 is fixedly arranged outside the oil tank of the injection molding machine, and the screw pump 20, the motor 30 and the fin type efficient cooler 50 are all fixedly arranged on the bracket 70; the check valve 90 is connected to the low pressure filter 80, one end of the safety pipe 100 is connected to the check valve 90, and the other end is connected to the screw pump 20; the Y-filter 110 is connected to the water inlet of the finned high efficiency cooler 50, and the Y-filter 110 is also connected to an external cooling water line.
The front end, the rear end, the upper end and the rear end are not particularly limited in direction, the front end and the upper end refer to the liquid inlet end of the filter before filtration, and the rear end and the lower end refer to the liquid outlet end of the filter after filtration.
The motor 30 is used for driving the screw pump 20 to suck oil from the oil tank; the low-pressure filter 80 is used for filtering oil; the Y-shaped filter 110 is used for filtering the introduced cooling water; the function of the check valve 90 and the safety pipe 100 is to play a safety protection role for the low-pressure filter 80, when the low-pressure filter 80 is blocked or the loop pressure is too high due to other reasons, the oil pressure forces the check valve 90 to open, and the oil returns to the screw pump 20 through the safety pipe 100; the finned high-efficiency filter has good heat dissipation performance and is used for cooling oil.
Specifically, referring to fig. 3, the present invention further includes: the oil suction pipe transition flange 120 is connected with the screw pump oil suction pipe 10 and the screw pump 20 respectively, and preferably, the safety pipe 100 is also connected with the screw pump 20 through the oil suction pipe transition flange 120; the motor flange 130, the motor flange 130 is connected with the motor 30 and the screw pump 20 respectively; the oil outlet pipe transition flange 140, the oil outlet pipe transition flange 140 is respectively connected with the screw pump oil outlet pipe 40 and the screw pump 20; an oil return pipe transition flange 150, wherein the oil return pipe transition flange 150 is respectively connected with the cooler oil return pipe 60 and the finned efficient cooler 50; the check valve flange 160, the check valve flange 160 is connected with the check valve 90, the low pressure filter 80 separately; the flanges all play a role in transition connection of corresponding parts. In addition, the utility model discloses still include common coupling, fastener, the standard component in some fields, no longer describe herein.
Specifically, the motor 30 may be a three-phase asynchronous motor, the finned high efficiency cooler 50 may be a WDL-650 model, and the low pressure filter 80 may be a 10um low pressure filter 80.
The working process and principle of the present invention are explained below: referring to fig. 2 and 5, when the temperature sensor detects that the oil in the oil tank reaches a preset threshold (not limited to which process the injection molding machine is in at the moment, as long as the oil temperature reaches), the motor 30 drives the screw pump 20 to suck the oil in the oil tank, the oil is pumped into the screw pump 20 through the oil inlet pipe of the screw pump 20, then enters the low-pressure filter 80 through the oil outlet pipe 40 of the screw pump, and the oil enters the finned high-efficiency cooler 50 after being filtered; meanwhile, cooling water enters the finned high-efficiency cooler 50 after being filtered by the Y-shaped filter 110, and after the cooling water and oil liquid perform sufficient heat exchange, the cooled oil liquid is pumped into an oil tank of the injection molding machine again through the oil return pipe 60 of the cooler to finish cooling.
Through the detailed explanation to above-mentioned embodiment, can understand, the utility model discloses an independent cooling device of independent setting outside the oil tank of injection molding machine, as long as the hydraulic oil in the oil tank reaches and predetermines the temperature value and just can cool off, the refrigerated time increases by a wide margin, no longer confine to in penetrating gluey, could carry out cooling treatment in the time quantum of melten gel, cooling time no longer receives process variation (penetrate gluey, the time of melten gel accounts for than shorten and penetrate gluey few oilization, electronic melten gel) and shortens, select the more excellent fin formula cooler of heat dispersion to strengthen the radiating effect simultaneously.
Firstly, the screw pump absorbs oil from the oil tank at constant power, the flow of oil entering the cooler is controlled, and no large impact is caused on the cooler, so that a fin type efficient cooler with better heat dissipation effect (fins inside the cooler are not easy to be impacted) can be selected, and the cooling effect is enhanced.
Secondly, as the cooling time is increased and the cooling effect is better, the oil tank does not need to be enlarged and the oil quantity does not need to be increased for heat dissipation, the oil consumption is saved, and the occupied area of the oil tank is reduced; practice proves that the independent cooling device can save the oil consumption by 20-40%.
Because the oil consumption is reduced and a cooler with large exchange capacity is not required to be selected, on one hand, the heat exchange utilization rate of the cooler can be improved, and on the other hand, the water consumption of the cooler can be saved (the cooling water required to be introduced into the cooler with large exchange capacity is larger); in addition, the independent cooling device is independently cooled by absorbing oil, and when the temperature does not reach a threshold value, a motor oil pump does not need to be started, so that compared with the prior art that water needs to be continuously introduced into the cooler, the independent fin type small cooler can greatly save water consumption; practice proves that the independent cooling device can save water consumption by 20-40%.
Because the flow of the oil is reduced, the pressure loss of the return oil is reduced, and most of the return oil pressure loss can be converted into the heat energy of the oil, the oil temperature can be controlled by reducing the return oil pressure loss, and the heat generation can be reduced; practice proves that the return oil pressure loss of the independent cooling device is reduced by 10-30%.
The independent cooling device is not affected by the adjustment of the injection molding process and can better adapt to the future development trend of the injection molding machine. Particularly, no matter how long the time for injecting and melting glue is in the production takt of different products, and the structure of electric melting glue and less oil injection is adopted by the injection molding machine in the future, the length of the cooling time of the independent cooling device cannot be influenced; as long as the temperature reaches the threshold value, the independent cooling device can absorb oil for cooling, and the oil is injected into the oil tank again after being cooled to the proper temperature.
Sixthly, a low-pressure filter of 10 microns is added, heat exchange is achieved after hydraulic oil and cooling water are fully filtered, and the cleanliness of an oil circuit system is improved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. An independent cooling device of an injection molding machine, comprising: the screw pump oil suction pipe, the screw pump, the motor, the screw pump oil outlet pipe, the finned efficient cooler, the cooler oil return pipe, the bracket and the temperature sensor are arranged on the screw pump; one end of the screw pump oil suction pipe is communicated with an oil tank of the injection molding machine, and the other end of the screw pump oil suction pipe is communicated with the screw pump; the motor is connected with the screw pump and drives the screw pump to absorb oil; the screw pump is communicated with the front end of the finned efficient cooler through an oil outlet pipe of the screw pump; the rear end of the finned efficient cooler is communicated with one end of the cooler oil return pipe, and the other end of the cooler oil return pipe is communicated with the oil tank; the temperature sensor for detecting the temperature of the oil tank is arranged in the oil tank; the support is fixedly arranged outside the oil tank of the injection molding machine, and the screw pump, the motor and the fin type efficient cooler are all fixedly arranged on the support.
2. The independent cooling apparatus of an injection molding machine according to claim 1, wherein the independent cooling apparatus of an injection molding machine further comprises a low pressure filter; one end of the screw pump oil outlet pipe is communicated with the screw pump, the other end of the screw pump oil outlet pipe is communicated with the upper end of the low-pressure filter, and the lower end of the low-pressure filter is communicated with the front end of the finned high-efficiency cooler.
3. The independent cooling apparatus of an injection molding machine according to claim 2, wherein the independent cooling apparatus of an injection molding machine further comprises a check valve and a safety pipe; the check valve is connected to the low-pressure filter, one end of the safety pipe is connected with the check valve, and the other end of the safety pipe is connected with the screw pump.
4. The independent cooling apparatus of an injection molding machine according to any one of claims 1 to 3, wherein the independent cooling apparatus of an injection molding machine further comprises a Y-type filter; the Y-shaped filter is connected to the water inlet end of the fin-type efficient cooler and is also connected with an external cooling water pipeline.
5. The individual cooling apparatus of an injection molding machine according to claim 1, wherein said individual cooling apparatus of an injection molding machine further comprises an oil suction pipe transition flange; the transition flange of the oil suction pipe is respectively connected with the oil suction pipe of the screw pump and the screw pump.
6. The independent cooling apparatus of an injection molding machine according to claim 1, wherein the independent cooling apparatus of an injection molding machine further comprises a motor flange; the motor flange is respectively connected with the motor and the screw pump.
7. The individual cooling apparatus of an injection molding machine according to claim 1, wherein said individual cooling apparatus of an injection molding machine further comprises a flow line transition flange; the oil outlet pipe transition flange is respectively connected with the screw pump oil outlet pipe and the screw pump.
8. The individual cooling apparatus of an injection molding machine according to claim 1, wherein said individual cooling apparatus of an injection molding machine further comprises an oil return pipe transition flange; the oil return pipe transition flange is respectively connected with the cooler oil return pipe and the fin type efficient cooler.
9. The individual cooling apparatus of an injection molding machine according to claim 3, wherein said individual cooling apparatus of an injection molding machine further comprises a check valve flange; the check valve flange is respectively connected with the check valve and the low-pressure filter.
10. The independent cooling apparatus of an injection molding machine as claimed in claim 1, wherein said motor is a three-phase asynchronous motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922361311.1U CN211891840U (en) | 2019-12-25 | 2019-12-25 | Independent cooling device of injection molding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922361311.1U CN211891840U (en) | 2019-12-25 | 2019-12-25 | Independent cooling device of injection molding machine |
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| CN211891840U true CN211891840U (en) | 2020-11-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111037864A (en) * | 2019-12-25 | 2020-04-21 | 博创智能装备股份有限公司 | Independent cooling device of injection molding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111037864A (en) * | 2019-12-25 | 2020-04-21 | 博创智能装备股份有限公司 | Independent cooling device of injection molding machine |
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