A transmission gear box for injection molding machine

Abstract

The invention relates to the field of injection molding, and discloses a transmission gear box for an injection molding machine, comprising a gear box and a heat dissipation component. The parts in the gear box are immersed in lubricating oil, and there is no need to regularly and separately add lubricating grease to the gear bearings in the gear box. The heat dissipation component comprises an outer shell, and a heat dissipation component is arranged in the outer shell. The heat dissipation component comprises a heat dissipation tank, and an annular magnet is inlaid on the outer cylindrical surface of the heat dissipation tank. A plurality of heat dissipation fins are arranged on the outer surface of the heat dissipation tank. The lubricating oil can be centrifugally thrown out to the tank wall of the heat dissipation tank through the heat dissipation component, so that it flows downward in a thin oil film state, thereby improving the heat dissipation effect of the lubricating oil, and can make iron filings in the lubricating oil closer to the tank wall, more easily captured by the annular magnet, and better iron filings removal effect. The cover plate of the gear box can be opened, so that it is more convenient to disassemble and assemble the parts in the gear box.

Description

Technical Field

[0001] The invention relates to the field of injection molding, and in particular to a transmission gear box for an injection molding machine. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. Gearbox is a commonly used power transmission technology for injection molding machines. There are gears, bearings and other parts in the gearbox. These parts need to be lubricated regularly. Once you forget to add it, it is very easy to cause damage to the parts and affect the service life. In order to solve this problem, in the prior art, the gearbox is generally set to a sealed structure with lubricating oil filled inside so that the parts are immersed in the lubricating oil. However, when the gearbox is used, the internal parts will generate heat, causing the temperature of the lubricating oil to rise. In order to ensure that the lubricating oil is in a low temperature state, to ensure that it can play the best lubrication performance and ensure the stable and reliable operation of the gearbox, it needs to be subjected to heat dissipation and cooling treatment.

[0003] Based on the heat dissipation and cooling treatment of lubricating oil, a Chinese invention patent with application publication number CN113790091A was found after searching, which disclosed a lubricating oil cooling system. The prior art of this article is to circulate the lubricating oil by pulling it, and exchange heat with the coolant circulation pipeline during the circulation, so as to achieve the heat dissipation of the lubricating oil. In addition, when the lubricating oil flows, it will drive the power blades to rotate, so that the magnetic adsorption plate can rotate, and the fine iron chips in the lubricating oil can be adsorbed, so as to achieve the iron chip removal of the lubricating oil. However, it still has some problems. Insufficient points: The lubricating oil flows in the lubricating oil circulation pipeline. Therefore, the heat exchange effect of the part of the lubricating oil close to the pipe wall is better, and the heat dissipation effect is good. The heat exchange effect of the part of the lubricating oil far away from the pipe wall is relatively poor, and the heat dissipation effect is not good. Therefore, its heat dissipation performance needs to be improved. In addition, the iron filings are located in the lubricating oil and flow with the lubricating oil. Therefore, there is a layer of lubricating oil between the magnetic adsorption plate and the iron filings. The iron filings need to overcome the resistance to moving in the lubricating oil before they can be adsorbed by the magnetic adsorption plate. Therefore, there is room for further improvement in the effect of removing iron filings.

[0004] Based on the above, the present invention proposes a transmission gearbox for an injection molding machine. Summary of the invention

[0005] In order to solve the problems mentioned in the above background, the present invention provides a transmission gear box for an injection molding machine.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0007] A transmission gearbox for an injection molding machine comprises a gearbox and a heat dissipation component, the heat dissipation component comprises an outer shell, a heat dissipation assembly is arranged in the outer shell, the heat dissipation assembly comprises a heat dissipation tank, an annular magnet is inlaid on the outer circumferential surface of the heat dissipation tank, a plurality of heat dissipation fins are arranged in an array on the outer surface of the heat dissipation tank, a fan coaxially located above the heat dissipation tank and a motor connected to the fan in power are arranged in the outer shell, a bottom tube coaxially extends from the tank bottom of the heat dissipation tank, and the bottom of the bottom tube is closed;

[0008] The outer shell is provided with a first oil pump and a second oil pump coaxially located below the heat sink, and the output shafts of the two oil pumps are coaxially connected, a chip storage box is provided at the bottom of the output shaft of the second oil pump, the first oil pump is located above the second oil pump, a side nozzle 1 is provided on the outer circumferential surface of the bottom pipe, the liquid inlet end of the first oil pump is connected to the side nozzle 1 through an oil inlet pipe, and the liquid outlet end of the first oil pump is connected to the gear box through an oil delivery pipe;

[0009] The bottom of the fan shaft is coaxially connected with connecting shaft one, and a centrifugal part is arranged at the bottom of connecting shaft one. The liquid inlet end of the second oil pump is connected to the gear box through an oil suction pipe, and the liquid outlet end of the second oil pump is connected to the centrifugal part through an oil outlet pipe. The bottom of the centrifugal part is coaxially connected with connecting shaft two, and a scraper part is connected to the bottom of connecting shaft two.

[0010] As a further improvement and optimization of the present invention, the outer surface of the gear box is provided with heat dissipation fins, and a fan is provided in the outer shell.

[0011] As a further improvement and optimization of the present invention, the centrifugal component includes a centrifugal disk coaxially located in the heat dissipation tank, the centrifugal disk includes a lower disk connected to the connecting shaft 1, an upper disk located above the lower disk, and an arc plate arranged between the upper disk and the lower disk, the end surface of the upper disk is provided with an avoidance hole for avoiding the connecting shaft 1, a plurality of arc plates are arranged in an array along the circumferential direction of the centrifugal disk, a convex tube coaxially extends at the orifice of the avoidance hole, the convex tube is located on the periphery of the connecting shaft 1, and the upper pipe mouth of the convex tube extends out of the heat dissipation tank and is connected to the oil outlet pipe through a rotating joint.

[0012] As a further improvement and optimization of the present invention, the scraper member includes a connecting sleeve coaxially located in the heat dissipation tank, the lower opening of the connecting sleeve is coaxially connected to the connecting shaft three, the bottom of the connecting shaft three extends out of the heat dissipation tank and is connected to the output shaft of the first oil pump, the upper opening of the connecting sleeve is coaxially connected to the upper shaft, and the upper shaft is connected to the connecting shaft two;

[0013] A notch is provided on the outer circumferential surface of the connecting sleeve, and an upwardly inclined chip guide tube is connected to the notch. A plurality of oil drain holes are arranged in an array on the lower surface of the chip guide tube. The upper open end of the chip guide tube is in contact with the tank wall of the heat sink. A spirally extending scraper rod is connected to the upper open end of the chip guide tube. The scraper rod is in contact with the tank wall of the heat sink. The upper end of the scraper rod is higher than the upper end of the annular magnet, and the lower end of the scraper rod is lower than the lower end of the annular magnet. The portion of the scraper rod below the annular magnet is directly above the upper open end of the chip guide tube.

[0014] As a further improvement and optimization of the present invention, the upper shaft and the second connecting shaft are dynamically connected via a reducer.

[0015] As a further improvement and optimization of the present invention, the output shafts of the first oil pump and the second oil pump, the connecting shaft three, the upper shaft, the connecting shaft two and the connecting shaft one are all in the shape of hollow shafts, and the upper end of the connecting shaft one is connected to an air pipe through a rotary joint, the outer cylindrical surface of the connecting shaft one is provided with an air hole connected to the rotary joint, and the end of the air pipe is connected to the air compressor.

[0016] As a further improvement and optimization of the present invention, a second side nozzle is provided on the outer circumferential surface of the bottom pipe, an end of the second side nozzle is connected to an oil drain pipe, and a sealing plug is provided at the end of the oil drain pipe.

[0017] As a further improvement and optimization of the present invention, a plurality of blades are arranged in an array along the circumferential direction on the outer circumferential surface of the connecting shaft 2.

[0018] As a further improvement and optimization of the present invention, a power connection is achieved between the output shaft of the first oil pump and the connecting shaft three through a speed increaser.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This solution can achieve heat dissipation of lubricating oil and iron chips removal through heat dissipation components, specifically:

[0021] 1. When cooling:

[0022] On the one hand, the lubricating oil flows down along the tank wall of the heat sink, and the lubricating oil is very thin, so the heat in the lubricating oil can be quickly transferred to the heat sink and the heat sink fins, so the heat dissipation effect and efficiency of the lubricating oil are significantly improved. In addition, the lubricating oil falls on the tank wall of the heat sink in a centrifugal manner, so the lubricating oil is in close contact with the tank wall of the heat sink, making it easier to transfer heat to the heat sink;

[0023] On the one hand, the first oil pump, the second oil pump, the fan and the centrifugal member are all driven by the motor. Therefore, when the temperature of the lubricating oil rises quickly, the motor drives the above structure to run quickly, and the lubricating oil thrown onto the wall of the heat dissipation tank, the wind force generated by the fan, and the flow rate of the lubricating oil pulled by the oil pump are correspondingly increased to accelerate the heat dissipation. When the temperature of the lubricating oil rises relatively slowly, the speed at which the motor drives the above structure to run can be slower, and no unnecessary heat dissipation energy consumption will be generated, that is, while ensuring the heat dissipation effect, the heat dissipation energy consumption is reduced;

[0024] 2. When removing iron chips, since the lubricating oil on the tank wall is thin, the iron chips in the lubricating oil are very close to the tank wall and can be easily attracted by the magnet and remain on the tank wall, so the effect of removing iron chips is better;

[0025] 3. The setting of the blades. On the one hand, the rotation of the blades will form a wind force flowing toward the wall of the heat sink. In the process of the lubricating oil being centrifugally thrown onto the wall of the heat sink, it is inevitable that a small amount of the lubricating oil will be splashed due to collision. This part of the lubricating oil is in the form of very small oil droplets, which are blocked by the wind force of the blades and will eventually be blown back to the wall of the heat sink. The wind force will press the lubricating oil, making it fit more closely with the wall of the heat sink and slowing down the downward flow rate, which can further improve the heat dissipation effect. On the other hand, the wind force generated by the blades presses the iron filings, causing them to pass through the lubricating oil, directly contact the tank wall, and be closer to the annular magnet, further improving the iron filings removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the gearbox and the cooling fins;

[0028] Figure 3 is a cross-sectional view of the gearbox;

[0029] Figure 4 is a schematic diagram of a heat dissipation component;

[0030] Figure 5 Schematic diagram of heat dissipation components Figure 1 ;

[0031] Figure 6 Schematic diagram of heat dissipation components Figure 2 ;

[0032] Figure 7 is a cross-sectional view of a heat dissipation component;

[0033] Figure 8 A schematic diagram of a centrifugal component and a scraping component;

[0034] Fig. 9 is a cross-sectional view of a centrifugal component;

[0035] Fig.10 is a schematic diagram of a scraper;

[0036] Fig.11 It is a partial cross-sectional view of the scraper.

[0037] The reference numerals in the accompanying drawings are:

[0038] 100, gearbox; 101, cooling fins; 102, thrust bearing; 200, heat dissipation component; 201, outer shell; 202, fan; 203, heat dissipation tank; 204, annular magnet; 205, bottom pipe; 2051, side nozzle 1; 2052, side nozzle 2; 206, first oil pump; 207, second oil pump; 208, chip storage box; 209, speed increaser; 210, oil drain pipe; 211, plug; 212, oil extraction pipe; 213, oil outlet pipe; 214, oil inlet pipe; 215, Oil delivery pipe; 216, air pipe; 217, motor; 218, fan; 219, cooling fin; 220, connecting shaft one; 2201, air hole; 221, centrifugal part; 2211, centrifugal disc; 2212, arc plate; 2213, convex pipe; 222, connecting shaft two; 2221, blade; 223, reducer; 224, scraper; 2241, scraper rod; 2242, chip guide tube; 2243, connecting sleeve; 2244, upper shaft; 2245, air guide bracket; 225, connecting shaft three. DETAILED DESCRIPTION

[0039] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0040] Reference Figure 1-Figure 11 A transmission gearbox for an injection molding machine includes a gearbox 100 and a heat dissipation component 200 for dissipating heat and cooling lubricating oil in the gearbox 100.

[0041] The components in the gear box 100 are immersed in lubricating oil, and there is no need to add lubricating grease to the gear bearings in the gear box 100 separately and regularly.

[0042] Reference Figure 3 , a refers to the cover of the gear box 100. The parts inside the gear box 100 can be disassembled and assembled by opening the cover, which is more convenient. The parts inside the gear box 100 are immersed in lubricating oil; a thrust bearing 102 is provided in the gear box 100, which solves the problem that the traditional gear box cannot withstand axial loads, making the gear box suitable for the injection molding machine structure that follows the movement of the shooting platform.

[0043] Reference Figure 2 and Figure 4The outer surface of the gear box 100 is provided with heat dissipation fins 101, and the heat dissipation component 200 includes an outer shell 201, and a heat dissipation component and a fan 202 are provided in the outer shell 201. The outer surface of the outer shell 201 is provided with ventilation holes. When the injection molding machine is in use, the temperature change is monitored by a temperature sensor arranged in the gear box 100. If the temperature rise is not large, the heat dissipation of the gear box 100 can be achieved by the cooperation of the fan 202 and the heat dissipation fins 101. If the temperature rise is large, the heat dissipation of the gear box 100 is achieved quickly and efficiently through the heat dissipation component. In addition, the iron filings of the lubricating oil can be removed regularly through the heat dissipation component.

[0044] Reference Figure 5-Figure 11 The heat dissipation component includes a heat dissipation tank 203, the outer cylindrical surface of which is inlaid with an annular magnet 204, and the outer surface of the heat dissipation tank 203 is also arranged with a plurality of heat dissipation fins 219 in an array. The outer shell 201 is also provided with a fan 218 coaxially located above the heat dissipation tank 203 and a motor 217 that is power-connected to the fan 218. The fan 218 is driven to rotate by the motor 217, thereby taking away the heat from the heat dissipation fins 219.

[0045] A bottom tube 205 coaxially extends from the bottom of the heat dissipation tank 203 , and the bottom of the bottom tube 205 is closed.

[0046] A first oil pump 206 and a second oil pump 207 are coaxially located below the heat sink 203 in the outer shell 201. The output shafts of both oil pumps are hollow shaft-shaped and coaxially connected. A chip box 208 is provided at the bottom of the output shaft of the second oil pump 207. A ventilation hole is provided on the outer surface of the chip box 208. The first oil pump 206 is located above the second oil pump 207.

[0047] Reference Figure 7 The bottom of the fan shaft of the fan 218 is coaxially connected with a connecting shaft 220, and a centrifugal part 221 is provided at the bottom of the connecting shaft 220. The liquid inlet end of the second oil pump 207 is connected to the gear box 100 through an oil suction pipe 212, and the liquid outlet end of the second oil pump 207 is connected to the centrifugal part 221 through an oil outlet pipe 213. The lubricating oil in the gear box 100 is extracted by the second oil pump 207 and sent to the centrifugal part 221, and the lubricating oil is thrown onto the tank wall of the heat sink 203 through the centrifugal part 221.

[0048] Further, see Fig. 9The centrifugal member 221 includes a centrifugal disc 2211 coaxially located in the heat dissipation tank 203, the centrifugal disc 2211 includes a lower disc connected to the connecting shaft 220, an upper disc located above the lower disc, and an arc plate 2212 arranged between the upper disc and the lower disc, the end surface of the upper disc is provided with an avoidance hole for avoiding the connecting shaft 220, and a plurality of arc plates 2212 are arranged in an array along the circumferential direction of the centrifugal disc 2211, and a convex pipe 2213 coaxially extends from the orifice of the avoidance hole, the convex pipe 2213 is located at the periphery of the connecting shaft 220, and the upper pipe mouth of the convex pipe 2213 extends out of the heat dissipation tank 203 and is connected to the oil outlet pipe 213 through the existing rotary joint technology; the lubricating oil in the second oil pump 207 traction gear box 100 flows into between the upper disc and the lower disc through the oil outlet pipe 213, the rotary joint, and the convex pipe 2213, and at the same time, the fan 218 rotates The centrifugal part 221 rotates together with the connecting shaft 220. During the rotation of the centrifugal part 221, the lubricating oil is thrown out by centrifugal force, and the lubricating oil will eventually fall on the tank wall of the heat sink 203, and then flow downward along the tank wall. The advantage of this method is that the lubricating oil can flow downward along the tank wall of the heat sink 203, and the lubricating oil is very thin, so the heat in the lubricating oil can be quickly transferred to the heat sink 203. The heat sink 203 is made of heat-conducting material, such as copper. The heat of the heat sink 203 is taken away by the cooperation of the heat sink fins 219 and the fan 218. Therefore, the heat dissipation effect and efficiency of the lubricating oil are significantly improved. In addition, the lubricating oil falls on the tank wall of the heat sink 203 in a centrifugal manner. Therefore, the lubricating oil is in close contact with the tank wall of the heat sink 203, and it is easier to transfer heat to the heat sink 203.

[0049] Reference Figure 7 The bottom of the centrifugal member 221 is coaxially connected to a second connecting shaft 222, and the bottom of the second connecting shaft 222 is connected to a scraper member 224 through a reducer 223. When the lubricating oil flows down along the tank wall of the heat dissipation tank 203, since the lubricating oil is thin, the iron filings in the lubricating oil are very close to the tank wall. When the iron filings flow downward with the lubricating oil, they will pass through the position of the annular magnet 204. Therefore, the iron filings are easily magnetically adsorbed and retained on the tank wall. At the same time, the iron filings on the tank wall are collected by the scraper member 224.

[0050] Further, see Figure 10-11 The scraper 224 includes a connecting sleeve 2243 coaxially located in the heat sink 203, a connecting shaft 3 225 is coaxially connected to the lower opening of the connecting sleeve 2243, the bottom of the connecting shaft 3 225 extends out of the heat sink 203 and is connected to the output shaft of the first oil pump 206, an upper shaft 2244 is coaxially connected to the upper opening of the connecting sleeve 2243, the upper end of the upper shaft 2244 is connected to the output end of the reducer 223, and the input end of the reducer 223 is connected to the connecting shaft 222.

[0051] A notch is provided on the outer circumferential surface of the connecting sleeve 2243, and an upwardly inclined chip guide tube 2242 is connected to the notch. A plurality of oil drain holes are arranged in an array on the lower surface of the chip guide tube 2242. The upper open end of the chip guide tube 2242 is in contact with the tank wall of the heat sink 203. The upper open end of the chip guide tube 2242 is connected to a spirally extending scraper rod 2241, and the scraper rod 2241 is also in contact with the tank wall of the heat sink 203, wherein the upper end of the scraper rod 2241 is slightly higher than the upper end of the annular magnet 204, and the lower end of the scraper rod 2241 is slightly lower than the lower end of the annular magnet 204. The portion of the scraper rod 2241 located below the annular magnet 204 is located directly above the upper open end of the chip guide tube 2242, that is, the upper opening of the chip guide tube 2242 can cover the portion of the scraper rod 2241 located below the annular magnet 204 from below.

[0052] When the centrifugal part 221 rotates, it rotates together with the scraper part 224 through the connecting shaft 222 and the reducer 223. Due to the existence of the reducer 223, the scraper part 224 rotates at a relatively low speed. During rotation, the scraper rod 2241 will scrape off the iron filings on the tank wall. The iron filings are pulled by the scraper rod 2241 extending in a spiral shape, gradually move downward, and finally fall into the chip guide tube 2242 after leaving the position of the annular magnet 204. In this process, part of the lubricating oil will also fall into the chip guide tube 2242, and the lubricating oil will leave through the oil drain hole, while the iron filings will remain in the chip guide tube 2242 and gradually fall into the connecting sleeve 2243.

[0053] Furthermore, the output shafts of the first oil pump 206 and the second oil pump 207, the connecting shaft three 225, the upper shaft 2244, the shaft of the reducer 223, the connecting shaft two 222, and the connecting shaft one 220 are all in the shape of hollow shafts, and the upper end of the connecting shaft one 220 is connected to the air pipe 216 through the existing rotary joint technology, and the outer cylindrical surface of the connecting shaft one 220 is provided with an air hole 2201 connected to the rotary joint, and the end of the air pipe 216 is connected to an air pump, an air compressor and other equipment that can provide airflow, and an air guide bracket 2245 is also provided between the connecting sleeve 2243 and the upper shaft 2244 for guiding part of the airflow to flow to the inner wall of the connecting sleeve 2243 and part of the airflow to flow to the connecting shaft three 225; with the assistance of the airflow, the iron filings in the connecting sleeve 2243 can be blown off and fall into the chip storage box 208, and the chip storage box 208 can be disassembled regularly for cleaning.

[0054] Reference Figure 6 and Figure 7 The outer circumferential surface of the bottom pipe 205 is provided with a side nozzle 2051, the liquid inlet end of the first oil pump 206 is connected to the side nozzle 2051 through an oil inlet pipe 214, and the liquid outlet end of the first oil pump 206 is connected to the gear box 100 through an oil delivery pipe 215; the lubricating oil after heat dissipation or iron filings removal will eventually fall into the bottom pipe 205, and be pulled back to the gear box 100 through the first oil pump 206.

[0055] Preferred embodiment, refer to Figure 6 and Figure 7 The outer circumferential surface of the bottom tube 205 is provided with a side nozzle 2052, the end of the side nozzle 2052 is connected to an oil drain pipe 210, and the end of the oil drain pipe 210 is provided with a sealing plug 211; after long-term use, the lubricating oil will inevitably deteriorate and be damaged and need to be replaced. Therefore, by opening the sealing plug 211, the lubricating oil in the heat sink 203 can be discharged through the oil drain pipe 210.

[0056] Preferred embodiment, refer to Figure 8 The outer circumferential surface of the second connecting shaft 222 is provided with a plurality of blades 2221 in an array along the circumferential direction; the second connecting shaft 222 rotates with the blades 2221, and the rotation of the blades 2221 will form a wind force flowing toward the wall of the heat sink 203. The significance of this is that, on the one hand, in the process of the lubricating oil being centrifugally thrown out to the wall of the heat sink 203, it is inevitable that a small amount of the lubricating oil will be splashed due to collision. This part of the lubricating oil is in the form of very small oil droplets, which are blocked by the wind force of the blades 2221 and will eventually be blown back to the wall of the heat sink 203. On the other hand, the wind force will press the lubricating oil, making it fit more closely with the wall of the heat sink 203 and slowing down the downward flow rate, thereby improving the heat dissipation effect. On the other hand, when removing iron filings, the iron filings are solid and hard. Under the pressure of the wind force, they will pass through the lubricating oil and directly contact the wall of the tank, closer to the annular magnet 204, and the iron filings removal effect is better.

[0057] Preferred embodiment, refer to Figure 6 The output shaft of the first oil pump 206 and the connecting shaft 3 225 are connected in power via a speed increaser 209. The significance of this is that, due to the existence of the speed reducer 223, the output shaft speeds of the first oil pump 206 and the second oil pump 207 will be reduced, thereby affecting their operation. Therefore, a speed increaser 209 is required.

[0058] Working principle of the present invention:

[0059] The lubricating oil in the gear box 100 is drawn by the second oil pump 207, and flows into between the upper disc and the lower disc through the oil outlet pipe 213, the rotary joint, and the convex pipe 2213. At the same time, the fan 218 rotates and rotates with the centrifugal member 221 through the connecting shaft 1 220. During the rotation of the centrifugal member 221, the lubricating oil is thrown out by centrifugal force. The lubricating oil will eventually fall on the tank wall of the heat dissipation tank 203, and then flow downward along the tank wall. The advantages of this method are:

[0060] On the one hand, the lubricating oil can flow down along the tank wall of the heat sink 203, and the lubricating oil is very thin, so the heat in the lubricating oil can be quickly transferred to the heat sink 203. The heat sink 203 is made of a heat-conducting material, such as copper. The heat of the heat sink 203 is taken away by the cooperation of the heat sink fins 219 and the fan 218, so the heat dissipation effect and efficiency of the lubricating oil are significantly improved. In addition, the lubricating oil falls on the tank wall of the heat sink 203 in a centrifugal manner, so the lubricating oil is in close contact with the tank wall of the heat sink 203, making it easier to transfer heat to the heat sink 203.

[0061] On the one hand, the first oil pump 206, the second oil pump 207, the fan 218 and the centrifugal member 221 are all driven by the motor 217. Therefore, when the temperature of the lubricating oil rises quickly, the motor 217 drives the above structure to run quickly, and the lubricating oil thrown onto the wall of the heat dissipation tank 203, the wind force generated by the fan 218, and the flow rate of the lubricating oil drawn by the oil pump are all increased accordingly, so as to accelerate the heat dissipation. When the temperature of the lubricating oil rises relatively slowly, the speed at which the motor 217 drives the above structure to run can be slower, so as not to generate unnecessary heat dissipation energy consumption, that is, while ensuring the heat dissipation effect, the heat dissipation energy consumption is reduced.

[0062] On the one hand, the rotation of the blades 2221 will form a wind force flowing toward the wall of the heat dissipation tank 203. In the process of the lubricating oil being centrifugally thrown onto the wall of the heat dissipation tank 203, a small amount of lubricating oil will inevitably be splashed due to collision. This part of the lubricating oil is in the form of very small oil droplets, which are blocked by the wind force of the blades 2221 and will eventually be blown back to the wall of the heat dissipation tank 203. In addition, the wind force will press the lubricating oil, making it fit more closely with the wall of the heat dissipation tank 203 and slowing down the downward flow rate, which can further improve the heat dissipation effect.

[0063] The lubricating oil after heat dissipation will eventually fall into the bottom pipe 205 and be drawn back to the gear box 100 by the first oil pump 206 .

[0064] In addition to the above-mentioned lubricating oil heat dissipation, the heat dissipation component can also remove iron chips, specifically:

[0065] When the lubricating oil flows down along the tank wall of the heat dissipation tank 203, the iron filings in the lubricating oil are very close to the tank wall because the lubricating oil is relatively thin. When the iron filings flow down along with the lubricating oil, they will pass through the location of the annular magnet 204. Therefore, the iron filings are easily magnetically attracted and retained on the tank wall.

[0066] At the same time, when the centrifugal part 221 rotates, it rotates with the scraper part 224 through the connecting shaft 222 and the reducer 223. Due to the existence of the reducer 223, the scraper part 224 rotates at a relatively low speed. During the rotation, the scraper rod 2241 will scrape the iron filings on the tank wall. The iron filings are pulled by the scraper rod 2241 extending in a spiral shape, gradually move downward, and finally fall into the chip guide tube 2242 after leaving the position of the annular magnet 204. In this process, part of the lubricating oil will also fall into the chip guide tube 2242, and the lubricating oil will leave through the oil drain hole, while the iron filings will remain in the chip guide tube 2242 and gradually fall into the connecting sleeve 2243. At the same time, the air pump or air compressor provides airflow to blow the iron filings in the connecting sleeve 2243, so that they fall into the chip storage box 208, and the chip storage box 208 can be regularly disassembled for cleaning;

[0067] During the iron chip removal process, since the lubricating oil on the tank wall is thin, the iron chips in the lubricating oil are very close to the tank wall and can be easily magnetically adsorbed and retained on the tank wall. Furthermore, on the one hand, during the process of the lubricating oil being centrifugally thrown onto the tank wall of the heat sink 203, it is inevitable that a small amount of the lubricating oil will be splashed due to collision. This part of the lubricating oil is in the form of very small oil droplets, which are hindered by the wind force of the blades 2221 and will eventually be blown back to the tank wall of the heat sink 203. The wind force generated by the blades 2221 will press the iron chips and make them pass through the lubricating oil, directly contact the tank wall, and be closer to the annular magnet 204, thereby achieving a better iron chip removal effect.

[0068] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A transmission gearbox for an injection molding machine, comprising a gearbox (100) and a heat dissipation component (200), characterized in that: The heat dissipation component (200) comprises an outer shell (201), a heat dissipation component is arranged in the outer shell (201), the heat dissipation component comprises a heat dissipation tank (203), an annular magnet (204) is inlaid on the outer circumferential surface of the heat dissipation tank (203), a plurality of heat dissipation fins (219) are arranged in an array on the outer surface of the heat dissipation tank (203), a fan (218) coaxially located above the heat dissipation tank (203) and a motor (217) connected to the fan (218) in power are arranged in the outer shell (201), a bottom tube (205) coaxially extends from the tank bottom of the heat dissipation tank (203), and the bottom of the bottom tube (205) is closed; A first oil pump (206) and a second oil pump (207) are coaxially disposed below the heat dissipation tank (203) in the outer shell (201), and the output shafts of the two oil pumps are coaxially connected. A chip storage box (208) is disposed at the bottom of the output shaft of the second oil pump (207). The first oil pump (206) is located above the second oil pump (207). A side nozzle 1 (2051) is disposed on the outer circumferential surface of the bottom tube (205). The liquid inlet end of the first oil pump (206) and the side nozzle 1 (2051) are connected via an oil inlet pipe (214), and the liquid outlet end of the first oil pump (206) and the gear box (100) are connected via an oil delivery pipe (215). The fan shaft bottom of the fan (218) is coaxially connected to a connecting shaft 1 (220), a centrifugal component (221) is provided at the bottom of the connecting shaft 1 (220), a liquid inlet end of the second oil pump (207) is connected to the gear box (100) via an oil extraction pipe (212), a liquid outlet end of the second oil pump (207) is connected to the centrifugal component (221) via an oil outlet pipe (213), a connecting shaft 2 (222) is coaxially connected to the bottom of the centrifugal component (221), and a scraping component (224) is connected to the bottom of the connecting shaft 2 (222); The centrifugal member (221) comprises a centrifugal disc (2211) coaxially located in the heat dissipation tank (203); the centrifugal disc (2211) comprises a lower disc connected to the first connecting shaft (220), an upper disc located above the lower disc, and an arc plate (2212) arranged between the upper disc and the lower disc; an avoidance hole for avoiding the first connecting shaft (220) is arranged on the end surface of the upper disc; a plurality of arc plates (2212) are arranged in an array along the circumferential direction of the centrifugal disc (2211); a convex tube (2213) coaxially extends from the orifice of the avoidance hole; the convex tube (2213) is located at the periphery of the first connecting shaft (220); an upper tube opening of the convex tube (2213) extends out of the heat dissipation tank (203) and is connected to the oil outlet pipe (213) via a rotary joint; The scraper member (224) comprises a connecting sleeve (2243) coaxially located in the heat dissipation tank (203); a connecting shaft 3 (225) is coaxially connected to the lower opening of the connecting sleeve (2243); the bottom of the connecting shaft 3 (225) extends out of the heat dissipation tank (203) and is connected to the output shaft of the first oil pump (206); an upper shaft (2244) is coaxially connected to the upper opening of the connecting sleeve (2243); and the upper shaft (2244) is connected to the connecting shaft 2 (222); A notch is provided on the outer circumferential surface of the connecting sleeve (2243), and an upwardly inclined chip guide tube (2242) is connected to the notch; a plurality of oil drain holes are arranged in an array on the lower surface of the chip guide tube (2242); the upper open end of the chip guide tube (2242) is in contact with the tank wall of the heat dissipation tank (203); the upper open end of the chip guide tube (2242) is connected to a scraper rod (2241) extending in a spiral shape; the scraper rod (2241) is in contact with the tank wall of the heat dissipation tank (203); the upper end of the scraper rod (2241) is higher than the upper end of the annular magnet (204); the lower end of the scraper rod (2241) is lower than the lower end of the annular magnet (204); and the portion of the scraper rod (2241) located below the annular magnet (204) is located directly above the upper open end of the chip guide tube (2242).

2. The transmission gearbox for an injection molding machine according to claim 1, characterized in that: The outer surface of the gear box (100) is provided with heat dissipation fins (101), and a fan (202) is provided inside the outer shell (201).

3. The transmission gearbox for an injection molding machine according to claim 1, characterized in that: The upper shaft (2244) and the second connecting shaft (222) are dynamically connected via a reducer (223).

4. The transmission gearbox for an injection molding machine according to claim 1, characterized in that: The output shafts of the first oil pump (206) and the second oil pump (207), the connecting shaft three (225), the upper shaft (2244), the connecting shaft two (222) and the connecting shaft one (220) are all in the shape of hollow shafts, and the upper end of the connecting shaft one (220) is connected to the air pipe (216) via a rotary joint, the outer cylindrical surface of the connecting shaft one (220) is provided with an air hole (2201) connected to the rotary joint, and the end of the air pipe (216) is connected to the air compressor.

5. The transmission gearbox for an injection molding machine according to claim 1, characterized in that: The outer circumferential surface of the bottom tube (205) is provided with a second side nozzle (2052), the end of the second side nozzle (2052) is connected to an oil drain pipe (210), and the end of the oil drain pipe (210) is provided with a sealing plug (211).

6. The transmission gearbox for an injection molding machine according to claim 1, characterized in that: The outer circumferential surface of the second connecting shaft (222) is provided with a plurality of blades (2221) in an array along the circumferential direction.

7. The transmission gearbox for an injection molding machine according to claim 1, characterized in that: The output shaft of the first oil pump (206) and the third connecting shaft (225) are connected to each other in a power manner via a speed increaser (209).

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