Cooling system of injection molding machine
By designing a cooling system for injection molding machines, a circulating pump and cooler are used to filter and cool the hydraulic oil, and to exchange heat with the motor and reducer. This solves the problem of untimely heat dissipation from the motor and reducer in injection molding machines, achieving efficient cooling and cost reduction.
Patent Information
- Application Number
- CN202422493380.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-10-15
AI Technical Summary
The motors and reducers of existing injection molding machines cannot dissipate heat in time during use, resulting in temperature rise, which affects the life of the equipment. In addition, traditional cooling methods are costly or ineffective.
Design a cooling system for an injection molding machine, including a first filter, a circulating pump, a first cooler, and a second cooler. The circulating pump filters and cools the hydraulic oil in the oil tank. The cooled hydraulic oil exchanges heat with the motor and reducer respectively, and then returns to the oil tank after cooling, thus achieving simultaneous cooling of the hydraulic oil, motor, and reducer.
It improves the heat dissipation of the motor and reducer, reduces cooling costs, simplifies the cooling system structure, and enhances the reliability and stability of the equipment.
Smart Images
Figure CN223657553U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection molding equipment technical field especially, relate to a kind of injection molding machine cooling system. BACKGROUND
[0002] The existing injection molding machine electric melting glue is mainly driven by the driving mechanism of motor and reducer to provide rotational driving force for plasticizing screw. Based on the special use of injection molding machine, the plastic extrusion thrust is large during use, which can cause the temperature in the motor and reducer to rise sharply. If these heat cannot be dissipated in time and quickly, it will seriously affect the service life of the motor and reducer.
[0003] The traditional motor cooling method is water cooling and oil cooling. Water cooling requires water treatment to prevent scale formation, but the cost of water treatment is high. Oil cooling mainly involves pumping oil from the oil tank of the injection molding machine to exchange heat with the motor and then returning to the oil tank. However, the oil in the oil tank is at a high temperature, which affects the cooling effect of the motor and causes the temperature of the oil in the oil tank to rise, resulting in high energy consumption of the cooling device in the oil tank. Traditional reducers mostly use water cooling, which also has the problem of high water treatment cost.
[0004] Therefore, there is an urgent need for an injection molding machine cooling system to solve the above technical problems. INVENTION CONTENTS
[0005] The utility model provides a kind of injection molding machine cooling system, it can cool the hydraulic oil of injection molding machine, can also cool the motor and reducer of electric melting glue, and structure is simple, while reducing the cooling cost of injection molding machine, improve the cooling effect of injection molding machine.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] The injection molding machine cooling system is used for cooling the hydraulic oil, motor and reducer of injection molding machine. The injection molding machine cooling system comprises a first filter, a circulating pump, a first cooler and a second cooler.
[0008] The oil inlet of the first filter is communicated with the oil tank, the oil outlet of the first filter is communicated with the oil inlet of the circulating pump, the oil outlet of the circulating pump is communicated with the oil inlet of the first cooler, the oil outlet of the first cooler is communicated with the oil inlet of the motor, the oil outlet of the motor is communicated with the oil inlet of the reduction gearbox of the reducer, the oil outlet of the reduction gearbox is communicated with the oil inlet of the second cooler, and the oil outlet of the second cooler is communicated with the oil tank.
[0009] Optionally, the injection molding machine cooling system further comprises:
[0010] A first electromagnetic valve, one end of the first electromagnetic valve is communicated with the oil outlet of the first cooler, and the other end is communicated with the oil inlet of the motor;
[0011] A second electromagnetic valve, one end of the second electromagnetic valve is communicated with the oil outlet of the first cooler, and the other end is communicated with the oil inlet of the reduction gearbox;
[0012] A third electromagnetic valve, one end of the third electromagnetic valve is communicated with the other end of the second electromagnetic valve and the oil outlet of the motor, and the other end is communicated with the oil inlet of the second cooler.
[0013] Optionally, the motor is provided with a first temperature sensor for detecting the temperature thereof, the reduction gearbox is provided with a second temperature sensor for detecting the temperature thereof, and the oil tank is provided with a third temperature sensor for detecting the temperature of the hydraulic oil, and the injection molding machine cooling system further comprises a controller, the controller is signal connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve, and the controller is used for controlling the opening and closing of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve according to the temperature of the motor detected by the first temperature sensor, the temperature of the reduction gearbox detected by the second temperature sensor and the temperature of the hydraulic oil detected by the third temperature sensor.
[0014] Optionally, the injection molding machine cooling system further comprises a second filter, the oil inlet of the second filter is communicated with the oil outlet of the circulating pump, and the oil outlet of the second filter is communicated with the oil inlet of the first cooler.
[0015] Optionally, the second filter is a low-pressure precision filter.
[0016] Optionally, the first filter is a self-sealing oil suction filter.
[0017] Optionally, the oil outlet of the self-sealing oil suction filter is further communicated with the oil inlet of an oil pump on the main oil circuit of the injection molding machine.
[0018] Optionally, the first filter is provided with a pressure sensor, the pressure sensor is used for detecting the pressure of the hydraulic oil passing through the first filter, and the pressure sensor is signal connected with an alarm, and the alarm is used for issuing an alarm when the pressure value of the pressure sensor exceeds a preset pressure.
[0019] Optionally, the circulating pump comprises a circulating oil pump and an oil pump motor for driving the circulating oil pump to work.
[0020] Optionally, the circulating oil pump is a one-way constant-displacement hydraulic pump.
[0021] The utility model discloses a beneficial effect:
[0022] The utility model provides a kind of injection molding machine cooling system for cooling the hydraulic oil, motor and speed reducer of injection molding machine, including first filter, circulating pump, first cooler and second cooler.The injection molding machine cooling system works, the hydraulic oil in oil tank is under the action of circulating pump first into first filter and is filtered, and the hydraulic oil after filtering is cooled and cooled in first cooler by circulating pump, and the hydraulic oil after cooling is sequentially heat exchanged with motor and speed reducer, so that the temperature of motor and speed reducer is reduced, and the hydraulic oil after heating exchange is cooled and cooled in second cooler, and the hydraulic oil after cooling is returned to oil tank.The injection molding machine cooling system is cooled by first cooler for the hydraulic oil that comes out in oil tank, and the motor and speed reducer are oil-cooled using the hydraulic oil after cooling, compared with the hydraulic oil in oil tank in prior art is directly used to cool motor or speed reducer, and the oil temperature of the hydraulic oil that is heat exchanged with motor and speed reducer is lower, improve the heat dissipation effect of motor and speed reducer, and then improve the reliability of motor and speed reducer work.Moreover, the hydraulic oil in oil tank is cooled by second cooler for the hydraulic oil after heat exchange with motor and speed reducer, so that the temperature of the hydraulic oil in oil tank is reduced, and the purpose of cooling hydraulic oil is realized.That is, the injection molding machine cooling system can simultaneously cool hydraulic oil, motor and speed reducer, compared with the cooling system of hydraulic oil, motor and speed reducer is all separately configured, greatly simplify the structure of injection molding machine cooling system, reduce cost, and improve cooling effect.
[0023] By setting first filter, the hydraulic oil circulating in the injection molding machine cooling system is filtered, which can reduce the risk of part blockage, and thus improve the stability of the injection molding machine cooling system. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the description of the embodiments of the utility model will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the content of the embodiments of the utility model and these drawings without creating labor.
[0025] Figure 1 It is the structure schematic diagram of injection molding machine cooling system provided by the embodiments of the utility model.
[0026] In the figure:
[0027] 10, oil tank; 20, motor; 30, speed reducer box;
[0028] 100, first filter; 200, circulating pump; 210, circulating oil pump; 220, oil pump motor; 300, first cooler; 400, second cooler; 500, first electromagnetic valve; 600, second electromagnetic valve; 700, third electromagnetic valve; 800, second filter. DETAILED DESCRIPTION
[0029] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, for the convenience of description, only the parts related to the utility model are shown in the drawings, not all the structures.
[0030] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0031] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature in the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature in the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature in the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0032] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.
[0033] Embodiment one
[0034] The embodiment provides an injection molding machine cooling system which can cool hydraulic oil of the injection molding machine, can cool a motor and a speed reducer of electric melting glue, has a simple structure, reduces cooling cost of the injection molding machine, and improves cooling effect of the injection molding machine.
[0035] Specifically, as shown in the figure, Figure 1 The injection molding machine cooling system comprises a first filter 100, a circulating pump 200, a first cooler 300 and a second cooler 400.
[0036] The connection relationship between the parts of the injection molding machine cooling system and the oil tank 10, the motor 20 and the speed reducer of the injection molding machine is as follows:
[0037] The oil inlet of the first filter 100 is communicated with the oil tank 10, the oil outlet of the first filter 100 is communicated with the oil inlet of the circulating pump 200, the oil outlet of the circulating pump 200 is communicated with the oil inlet of the first cooler 300, the oil outlet of the first cooler 300 is communicated with the oil inlet of the motor 20, the oil outlet of the motor 20 is communicated with the oil inlet of the speed reducer box 30 of the speed reducer, the oil outlet of the speed reducer box 30 is communicated with the oil inlet of the second cooler 400, and the oil outlet of the second cooler 400 is communicated with the oil tank 10.
[0038] The working principle of the injection molding machine cooling system is as follows:
[0039] The hydraulic oil in the oil tank 10 is first introduced into the first filter 100 under the action of the circulating pump 200 for filtration, the filtered hydraulic oil is introduced into the first cooler 300 through the circulating pump 200 and is cooled, the cooled hydraulic oil is sequentially heat-exchanged with the motor 20 and the speed reducer, so that the temperature of the motor 20 and the speed reducer is reduced, the heat-exchanged and heated hydraulic oil is introduced into the second cooler 400 and is cooled, and the cooled hydraulic oil is returned to the oil tank 10.
[0040] The injection molding machine cooling system cools the hydraulic oil in the oil tank 10 through the first cooler 300, and cools the motor 20 and the speed reducer by using the cooled hydraulic oil, so that the oil temperature of the hydraulic oil heat-exchanged with the motor 20 and the speed reducer is lower, the heat dissipation effect of the motor 20 and the speed reducer is improved, and the reliability of the motor 20 and the speed reducer is improved. Moreover, the second cooler 400 is used to cool the hydraulic oil heat-exchanged with the motor 20 and the speed reducer, so that the temperature of the hydraulic oil returned to the oil tank 10 is reduced, and the purpose of cooling the hydraulic oil is achieved. That is, the injection molding machine cooling system can cool the hydraulic oil, the motor 20 and the speed reducer at the same time, compared with the hydraulic oil, the motor 20 and the speed reducer which are respectively provided with cooling systems, the structure of the injection molding machine cooling system is greatly simplified, the cost is reduced, and the cooling effect is improved.
[0041] By setting the first filter 100 to filter the hydraulic oil circulating in the injection molding machine cooling system, the risk of part blockage can be reduced, thereby improving the stability of the injection molding machine cooling system.
[0042] Optionally, the first filter 100 can adopt a self-sealing oil suction filter. The self-sealing oil suction filter has a self-sealing valve, which can isolate the oil tank 10 oil circuit, so that the hydraulic oil in the oil tank 10 cannot flow outwards, thereby making it more convenient to replace, clean the filter element or maintain the system.
[0043] Further, the injection molding machine cooling system can share the self-sealing oil suction filter with the main oil circuit of the injection molding machine. Specifically, the oil outlet of the self-sealing oil suction filter is in communication with the oil inlet of the oil pump on the main oil circuit of the injection molding machine in addition to the oil inlet of the circulating pump 200. In this way, the cost of parts can be reduced.
[0044] Preferably, the injection molding machine cooling system further comprises a pressure sensor and an alarm. The pressure sensor is arranged on the first filter 100, and the pressure sensor is in signal connection with the alarm. The alarm is used to issue an alarm when the pressure value of the pressure sensor exceeds the preset pressure. It can be understood that when the pressure value of the pressure sensor exceeds the preset pressure, it indicates that the first filter 100 is severely blocked, which will affect the cooling effect of the motor 20 and the reducer. Therefore, at this time, the alarm issues an alarm to remind the staff to timely maintain the first filter 100, thereby improving the reliability of the injection molding machine cooling system, and further improving the reliability of the motor 20 and the reducer.
[0045] Further, continuing to refer to Figure 1 In the present embodiment, the circulating pump 200 comprises a circulating oil pump 210 and an oil pump motor 220 for driving the circulating oil pump 210 to work.
[0046] Optionally, the circulating oil pump 210 can be a one-way constant-displacement hydraulic pump. The one-way constant-displacement hydraulic pump has a simple structure and can reduce maintenance costs.
[0047] Further, continuing to refer to Figure 1 The injection molding machine cooling system can further comprise a second filter 800. The oil inlet of the second filter 800 is in communication with the oil outlet of the circulating pump 200, and the oil outlet of the second filter 800 is in communication with the oil inlet of the first cooler 300. The second filter 800 is used to assist the first filter 100 in filtering the hydraulic oil, further reducing the risk of impurities in the hydraulic oil blocking the first cooler 300, the motor 20, the reducer and the second cooler 400.
[0048] Optionally, the second filter 800 can adopt a low-pressure precision filter. The low-pressure precision filter has low cost, long service life, and can perform more precise filtration, thereby having better filtration effect.
[0049] Optionally, the first cooler 300 and the second cooler 400 can each be a small-flow cooler, so that the system cost can be reduced.
[0050] Embodiment Two
[0051] The injection molding machine cooling system of the present embodiment is substantially the same as that of Embodiment One, and only improved on the basis of Embodiment One. Therefore, only the differences between the two will be described herein, and the same structures of the present embodiment and Embodiment One will not be described again.
[0052] Specifically, continuing to refer to Figure 1 In the present embodiment, the injection molding machine cooling system further comprises a first electromagnetic valve 500, a second electromagnetic valve 600, and a third electromagnetic valve 700.
[0053] The one end of the first electromagnetic valve 500 is in communication with the oil outlet of the first cooler 300, and the other end is in communication with the oil inlet of the motor 20. The one end of the second electromagnetic valve 600 is in communication with the oil outlet of the first cooler 300, and the other end is in communication with the oil inlet of the speed reducer 30. The one end of the third electromagnetic valve 700 is in communication with the other end of the second electromagnetic valve 600 and the oil outlet of the motor 20, and the other end is in communication with the oil inlet of the second cooler 400.
[0054] By arranging the first electromagnetic valve 500, the second electromagnetic valve 600, and the third electromagnetic valve 700, the injection molding machine cooling system has a single hydraulic oil cooling mode, a single motor cooling mode, a single speed reducer cooling mode, and a comprehensive hydraulic oil, motor, and speed reducer cooling mode.
[0055] Specifically, in the single hydraulic oil cooling mode, the first electromagnetic valve 500 is closed, and the second electromagnetic valve 600 and the third electromagnetic valve 700 are both opened. In the single motor cooling mode, the first electromagnetic valve 500 and the third electromagnetic valve 700 are opened, and the second electromagnetic valve 600 is closed. In the single speed reducer cooling mode, the first electromagnetic valve 500 and the third electromagnetic valve 700 are both closed, and the second electromagnetic valve 600 is opened. In the comprehensive hydraulic oil, motor, and speed reducer cooling mode, the first electromagnetic valve 500 is opened, and the second electromagnetic valve 600 and the third electromagnetic valve 700 are both closed.
[0056] The injection molding machine cooling system can switch between the single hydraulic oil cooling mode, the single motor cooling mode, the single speed reducer cooling mode, and the comprehensive hydraulic oil, motor, and speed reducer cooling mode by controlling the opening and closing of the first electromagnetic valve 500, the second electromagnetic valve 600, and the third electromagnetic valve 700, so that the use flexibility is high, and various use requirements of users can be met.
[0057] Further, the motor 20 is provided with a first temperature sensor for detecting the temperature of the motor 20, the reduction gearbox 30 is provided with a second temperature sensor for detecting the temperature of the reduction gearbox 30, and the oil tank 10 is provided with a third temperature sensor for detecting the temperature of the hydraulic oil. The injection molding machine cooling system further comprises a controller, the controller is in signal connection with the first temperature sensor, the second temperature sensor, the third temperature sensor, the first electromagnetic valve 500, the second electromagnetic valve 600 and the third electromagnetic valve 700, and the controller is used for controlling the opening and closing of the first electromagnetic valve 500, the second electromagnetic valve 600 and the third electromagnetic valve 700 according to the temperature of the motor 20 detected by the first temperature sensor, the temperature of the reduction gearbox 30 detected by the second temperature sensor and the temperature of the hydraulic oil detected by the third temperature sensor.
[0058] That is, by arranging the first temperature sensor, the second temperature sensor, the third temperature sensor and the controller, intelligent temperature control of the hydraulic oil, the motor 20 and the reduction gearbox can be realized, so that the hydraulic oil, the motor 20 and the reduction gearbox can always be kept at a suitable working temperature, which is beneficial to improve the working reliability of the motor 20 and the reduction gearbox and prolong the service life of the motor 20 and the reduction gearbox.
[0059] Exemplarily, if the first temperature sensor detects that the temperature of the motor 20 is relatively high and the second temperature sensor detects that the temperature of the reduction gearbox is not high, the controller can control the first electromagnetic valve 500 and the third electromagnetic valve 700 to be opened and the second electromagnetic valve 600 to be closed, so that the injection molding machine cooling system executes the single-motor cooling mode.
[0060] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made in the spirit and principle of the utility model should be included in the protection scope of the utility model claim.
Claims
1. Injection molding machine cooling system for cooling the hydraulic oil, the motor (20) and the reduction gear of an injection molding machine, characterized in that The injection molding machine cooling system comprises a first filter (100), a circulating pump (200), a first cooler (300) and a second cooler (400); An oil inlet of the first filter (100) is communicated with an oil tank (10), an oil outlet of the first filter (100) is communicated with an oil inlet of the circulating pump (200), an oil outlet of the circulating pump (200) is communicated with an oil inlet of the first cooler (300), an oil outlet of the first cooler (300) is communicated with an oil inlet of the motor (20), an oil outlet of the motor (20) is communicated with an oil inlet of a reduction gearbox (30) of a speed reducer, an oil outlet of the reduction gearbox (30) is communicated with an oil inlet of the second cooler (400), and an oil outlet of the second cooler (400) is communicated with the oil tank (10).
2. The injection molding machine cooling system of claim 1, wherein, The injection molding machine cooling system further comprises: A first electromagnetic valve (500), one end of which is communicated with the oil outlet of the first cooler (300), and the other end of which is communicated with the oil inlet of the motor (20); A second electromagnetic valve (600), one end of which is communicated with the oil outlet of the first cooler (300), and the other end of which is communicated with the oil inlet of the reduction gearbox (30); A third electromagnetic valve (700), one end of which is communicated with the other end of the second electromagnetic valve (600) and the oil outlet of the motor (20), and the other end of which is communicated with the oil inlet of the second cooler (400).
3. The injection molding machine cooling system of claim 2, wherein, A first temperature sensor for detecting the temperature of the motor (20) is arranged on the motor (20), a second temperature sensor for detecting the temperature of the reduction gearbox (30) is arranged on the reduction gearbox (30), and a third temperature sensor for detecting the temperature of the hydraulic oil is arranged on the oil tank (10), and the injection molding machine cooling system further comprises a controller, which is signal connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the first electromagnetic valve (500), the second electromagnetic valve (600) and the third electromagnetic valve (700).
4. The injection molding machine cooling system of claim 1, wherein, The injection molding machine cooling system further comprises a second filter (800), an oil inlet of which is communicated with an oil outlet of the circulating pump (200), and an oil outlet of which is communicated with an oil inlet of the first cooler (300).
5. The injection molding machine cooling system of claim 4, wherein, The second filter (800) is a low-pressure precision filter.
6. The injection molding machine cooling system of claim 1, wherein, The first filter (100) is a self-sealing oil suction filter.
7. The injection molding machine cooling system of claim 6, wherein, The oil outlet of the self-sealing oil suction filter is further communicated with an oil inlet of an oil pump on a main oil circuit of the injection molding machine.
8. The injection molding machine cooling system of claim 1, wherein, A pressure sensor is arranged on the first filter (100), which is used for detecting the pressure of the hydraulic oil passing through the first filter (100), and the pressure sensor is signal connected with an alarm, which is used for issuing an alarm when the pressure value of the pressure sensor exceeds a preset pressure.
9. The injection molding machine cooling system of claim 1 wherein, The circulating pump (200) comprises a circulating oil pump (210) and an oil pump motor (220) for driving the circulating oil pump (210) to work.
10. The injection molding machine cooling system of claim 9, wherein, The circulating oil pump (210) is a one-way constant-displacement hydraulic pump.