Injection seat pre-plasticized bearing cooling and lubricating system

Abstract

The utility model relates to the field of injection molding machines, and discloses an injection seat pre-plasticized bearing cooling and lubricating system which comprises an injection seat (1), a charging barrel cavity (2) formed in the injection seat (1), a transmission rod (3) rotationally arranged in the charging barrel cavity (2) in a penetrating manner, and a bearing (4) arranged between the transmission rod (3) and the inner wall of the charging barrel cavity (2), the injection base pre-plasticized bearing cooling and lubricating system is characterized in that the charging barrel cavity (2) is filled with lubricating oil which immerses the bearing (4) by more than half of the height, and sealing covers (5) are arranged at openings in the two ends of the charging barrel cavity (2) respectively, and the two ends of the transmission rod (3) penetrate through the sealing covers (5) in a rotating mode so as to seal the lubricating oil. And more than half of the height of the bearing (4) is immersed in the lubricating oil, so that the bearing (4) can be lubricated in real time, and the lubrication degree of the bearing (4) is maintained. Meanwhile, the lubricating oil can reduce the working temperature of the bearing (4) through heat exchange, so that the bearing (4) works more stably, and the service life of the bearing (4) is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of injection molding machines, in particular to a cooling and lubricating system for a pre-molded bearing of an injection seat. Background Art

[0002] The function of the injection molding machine injection system is to uniformly plasticize the plastic material into a molten melt, and inject a certain amount of the plastic melt into the mold cavity of the mold at a certain injection pressure and injection speed. For example, the patent document with the announcement number CN116080021A discloses a similar injection molding machine injection system.

[0003] The injection molding machine injection system, such as Figure 1 As shown, it is mainly composed of an injection seat 1, a screw 21, a barrel 25 and a transmission mechanism 26. Among them, the screw 21 is inserted into the barrel 25, and a transmission rod 3 is coaxially arranged at the tail end of the screw 21. The injection seat 1 is provided with a barrel cavity 2 for the transmission rod 3 to rotate and pass through. The end of the transmission rod 3 away from the screw 21 passes through the barrel cavity 2 and is connected to the transmission mechanism 26. The transmission mechanism 26 can transmit power to the transmission rod 3 and the screw 21 in sequence to drive the material in the barrel 25 to move forward, thereby realizing the injection function of the injection system of the injection molding machine.

[0004] In order to ensure the stability and smoothness of the screw 21 during rotation, the injection system of the traditional injection molding machine usually sets one or more sets of bearings 4 between the transmission rod 3 and the inner wall of the barrel cavity 2. However, large bearings 4 have certain requirements on lubrication and working temperature, and are expensive. Frequent replacement will increase the equipment maintenance cost, so there is still room for improvement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides an injection seat pre-plastic bearing cooling and lubrication system, which can lubricate the bearing arranged between the transmission rod and the inner wall of the barrel cavity through the lubricating oil in the barrel cavity, and effectively reduce the working temperature of the bearing, thereby extending the service life and reducing the replacement cost of the bearing.

[0006] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0007] An injection seat pre-plastic bearing cooling and lubrication system includes an injection seat, a barrel cavity opened in the injection seat, a transmission rod rotatably inserted into the barrel cavity, and a bearing arranged between the transmission rod and the inner wall of the barrel cavity. The barrel cavity is filled with lubricating oil to immerse more than half the height of the bearing, and both end openings of the barrel cavity are provided with covers for the two ends of the transmission rod to rotatably penetrate to seal the lubricating oil.

[0008] By adopting the above scheme, by filling the barrel cavity with lubricating oil and immersing more than half of the bearing in the lubricating oil, the bearing can be lubricated in real time to maintain the lubrication of the bearing. At the same time, the lubricating oil can reduce the operating temperature of the bearing through heat exchange, so that the bearing works more stably and its service life is extended.

[0009] Preferably, an oil filling hole connected to the barrel cavity is provided on the top of the injection seat.

[0010] By adopting the above scheme, the staff can add lubricating oil to the barrel cavity through the oil filling hole to ensure the cooling and lubrication effect of the bearing.

[0011] Preferably, the upper opening of the oil filling hole is provided with a first sealing plug.

[0012] By adopting the above solution, the first sealing plug can block the upper opening of the oil filling hole, thereby preventing the lubricating oil in the barrel cavity from splashing out of the oil filling hole when the bearing is working.

[0013] Preferably, a gripping piece is provided at the upper end of the first sealing plug.

[0014] By adopting the above solution, the holding piece can improve the convenience of disassembly and assembly of the first sealing plug.

[0015] Preferably, a detection hole is opened on the side of the injection seat and on one side of the barrel cavity, and a temperature sensor for detecting temperature changes in the barrel cavity is inserted into the detection hole.

[0016] By adopting the above scheme, the temperature in the barrel cavity can be transferred to the detection hole through heat conduction. At this time, the temperature change in the barrel cavity can be indirectly obtained with the help of the temperature sensor in the detection hole, thereby avoiding damage to the bearing caused by excessive temperature in the barrel cavity.

[0017] Preferably, a main channel is opened downward at the bottom of the barrel cavity, a first branch channel is extended laterally from the main channel, the first branch channel extends to the outer side of the injection seat and forms a connecting port, and the connecting port is connected to a level meter arranged on the side of the injection seat through a drainage tube to detect the height of the lubricating oil liquid in the barrel cavity.

[0018] By adopting the above scheme, the staff can observe the liquid level of the lubricating oil in the barrel cavity through the liquid level gauge, and add lubricating oil in time according to the change of the liquid level so that the liquid level of the lubricating oil can be at a suitable position.

[0019] Preferably, the main channel is further laterally extended with a second branch channel, the second branch channel extends to the outer side surface of the injection seat and is formed with an oil drain hole, and a second sealing plug is arranged on the oil drain hole.

[0020] By adopting the above solution, the waste oil in the barrel cavity can be discharged by opening the second sealing plug, so that the performance of the lubricating oil is maintained in a better state.

[0021] Preferably, an emergency oil drain hole extends downward from the lower end of the main channel, the emergency oil drain hole extends to the bottom of the injection seat and is provided with a third sealing plug.

[0022] By adopting the above solution, when the oil drain hole is blocked, the waste oil in the barrel cavity can be urgently discharged by opening the third sealing plug, thereby improving work efficiency.

[0023] The utility model has a significant technical effect due to the adoption of the above technical solution: by filling the barrel cavity with lubricating oil and immersing more than half of the height of the bearing with lubricating oil, the bearing can be lubricated in real time to maintain the lubrication of the bearing. At the same time, the lubricating oil can reduce the working temperature of the bearing through heat exchange, so that the bearing works more stably and its service life is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an injection system of an injection molding machine in the prior art;

[0025] Figure 2 The structure of this embodiment is shown in FIG. Figure 1 ;

[0026] Figure 3 The structure of this embodiment is shown in FIG. Figure 2 ;

[0027] Figure 4 for Figure 2 An enlarged schematic diagram of section A is shown;

[0028] Figure 5 for Figure 2 An enlarged schematic diagram of portion B is shown;

[0029] Figure 6 is a system architecture diagram of this embodiment;

[0030] Figure 7 The structure of this embodiment is shown in FIG. Figure 3 ;

[0031] Figure 8 for Figure 7 An enlarged schematic diagram of section C is shown.

[0032] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Injection seat; 2. Barrel cavity; 3. Transmission rod; 4. Bearing; 5. Cover; 6. Oil filling hole; 7. First sealing plug; 8. Holding piece; 9. Detection hole; 10. Temperature sensor; 11. Main channel; 12. First branch channel; 13. Connecting port; 14. Drainage tube; 15. Liquid level gauge; 16. Second branch channel; 17. Oil drain hole; 18. Second sealing plug; 19. Emergency oil drain hole; 20. Third sealing plug; 21. Screw; 22. Controller; 23. Display; 24. Alarm; 25. Barrel; 26. Transmission mechanism. DETAILED DESCRIPTION

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] like Figure 2 and Figure 3 As shown, the present embodiment discloses an injection seat pre-plastic bearing cooling and lubrication system, comprising an injection seat 1, a screw 21, a barrel cavity 2 opened in the injection seat 1, a transmission rod 3 coaxially arranged at the tail end of the screw 21 and rotatably penetrated in the barrel cavity 2, and one or more bearings 4 arranged between the transmission rod 3 and the inner wall of the barrel cavity 2. The barrel cavity 2 is filled with lubricating oil to submerge more than half the height of the bearing 4, and both end openings of the barrel cavity 2 are provided with sealing caps 5 for the two ends of the transmission rod 3 to rotatably penetrate to seal the lubricating oil. In the present embodiment, the sealing cap 5 is preferably a skeleton oil seal, which can not only effectively seal the lubricating oil in the barrel cavity 2, but also ensure the normal operation of the transmission rod 3.

[0035] like Figure 4 As shown, in order to facilitate the addition of lubricating oil, an oil filling hole 6 connected to the barrel cavity 2 is opened on the top of the injection seat 1. A first sealing plug 7 is provided at the upper opening of the oil filling hole 6. A gripping member 8 is provided at the upper end of the first sealing plug 7.

[0036] like Figure 5 and Figure 6As shown, in order to avoid the bearing 4 from being damaged due to excessive temperature in the barrel cavity 2, a detection hole 9 is opened on the side of the injection seat 1 and on one side of the barrel cavity 2. A temperature sensor 10 for detecting temperature changes in the barrel cavity 2 is inserted into the detection hole 9. The temperature sensor 10 is preferably a thermocouple. A controller 22 is coupled to the temperature sensor 10, and the controller 22 is preferably a PLC. A display 23 and an alarm 24 are coupled to the controller 22. The temperature signal measured by the temperature sensor 10 can be sent to the controller 22, and the controller 22 can display the measured temperature through the display 23 so that the staff can clearly understand the temperature changes in the barrel cavity 2. When the temperature value measured by the temperature sensor 10 is greater than or equal to the temperature threshold built into the controller 22, it means that the temperature in the barrel cavity 2 is too high. At this time, the controller 22 controls the alarm 24 to sound an alarm to remind the staff to take timely measures. The above process can be implemented with the help of the built-in program or equivalent analog circuit of the controller 22, which belongs to common knowledge in the field and will not be repeated here.

[0037] like Figure 2 and Figure 8 As shown, in order to conveniently observe the change of the liquid level of the lubricating oil in the barrel cavity 2, a main flow channel 11 is opened downward at the bottom of the barrel cavity 2, and a first branch flow channel 12 is extended laterally from the main flow channel 11. The first branch flow channel 12 extends to the outer side of the injection seat 1 and forms a connecting port 13. The connecting port 13 is connected to a liquid level gauge 15 arranged on the side of the injection seat 1 through a drainage pipe 14 to detect the liquid level of the lubricating oil in the barrel cavity 2. In this embodiment, the liquid level gauge 15 is preferably an oil tank liquid level gauge.

[0038] like Figure 7 and Figure 8 As shown, in order to conveniently discharge the waste oil in the barrel cavity 2, the main channel 11 is also laterally extended with a second branch channel 16, which extends to the outer side of the injection seat 1 and forms an oil drain hole 17, and a second sealing plug 18 is provided on the oil drain hole 17. An emergency oil drain hole 19 extends downward from the lower end of the main channel 11, and the emergency oil drain hole 19 extends to the bottom of the injection seat 1 and is provided with a third sealing plug 20 to achieve emergency discharge of waste oil. In this embodiment, the second sealing plug 18 and the third sealing plug 20 are preferably threaded oil plugs, which can improve the sealing performance and disassembly convenience of the second sealing plug 18 and the third sealing plug 20.

[0039] The specific working principle is as follows:

[0040] When the bearing 4 on the transmission rod 3 is working, the lubricating oil in the barrel cavity 2 can be turned up to lubricate the bearing 4. At the same time, the lubricating oil can cool the bearing 4 through heat exchange to prevent the bearing 4 from overheating, thereby extending the service life of the bearing 4. At this time, the temperature sensor 10 in the detection hole 9 can monitor the temperature change in the barrel cavity 2, and the staff can understand the temperature change inside the barrel cavity 2 through the display 23. When the temperature in the barrel cavity 2 is too high, the controller 22 can control the alarm 24 to alarm, so as to remind the staff to take timely measures to avoid damage to the bearing 4 due to high temperature.

[0041] At the same time, the staff can observe the liquid level of the lubricating oil in the barrel cavity 2 through the liquid level meter 15 and replenish the lubricating oil in time to maintain the cooling and lubricating effect of the lubricating oil.

[0042] When adding lubricating oil, the first sealing plug 7 is first opened by the holding piece 8 to expose the upper opening of the oil filling hole 6, thereby making it convenient for the staff to add lubricating oil to the barrel cavity 2 through the oil filling hole 6.

[0043] When the waste oil in the barrel chamber 2 is discharged, the second sealing plug 18 is opened to expose the oil discharge hole 17, so that the waste oil in the barrel chamber 2 can be discharged through the main flow channel 11, the first branch flow channel 12 and the oil discharge hole 17 in sequence.

[0044] When the oil drain hole 17 is blocked, the third sealing plug 20 is opened to expose the emergency oil drain hole 19, so that the waste oil in the barrel cavity 2 can be discharged through the main flow channel 11, the second branch flow channel 16 and the emergency oil drain hole 19 in sequence.

[0045] During the oil discharge process, in order to prevent the barrel chamber 2 from being in a negative pressure state, the first sealing plug 7 can be opened to keep the air pressure balance between the barrel chamber 2 and the outside, thereby preventing the waste oil from being unable to be discharged.

Claims

1. An injection seat pre-plastic bearing cooling and lubrication system, comprising an injection seat (1), a barrel cavity (2) opened in the injection seat (1), a transmission rod (3) rotatably inserted into the barrel cavity (2), and a bearing (4) arranged between the transmission rod (3) and the inner wall of the barrel cavity (2), characterized in that: The barrel cavity (2) is filled with lubricating oil to submerge more than half the height of the bearing (4), and both end openings of the barrel cavity (2) are provided with sealing caps (5) for the two ends of the transmission rod (3) to rotate and penetrate respectively to seal the lubricating oil.

2. The injection seat pre-plastic bearing cooling and lubrication system according to claim 1 is characterized in that: The top of the injection seat (1) is provided with an oil injection hole (6) which is connected to the barrel cavity (2).

3. The injection seat pre-plastic bearing cooling and lubrication system according to claim 2 is characterized in that: The upper opening of the oil filling hole (6) is provided with a first sealing plug (7).

4. The injection seat pre-plastic bearing cooling and lubrication system according to claim 3 is characterized in that: A gripping piece (8) is provided at the upper end of the first sealing plug (7).

5. The injection seat pre-plasticized bearing cooling and lubrication system according to claim 1 is characterized in that: A detection hole (9) is provided on the side of the injection seat (1) and on one side of the barrel cavity (2), and a temperature sensor (10) for detecting temperature changes in the barrel cavity (2) is inserted into the detection hole (9).

6. The injection seat pre-plasticized bearing cooling and lubrication system according to claim 1 is characterized in that: A main flow channel (11) is provided downwardly at the bottom of the barrel cavity (2), a first branch flow channel (12) is extended transversely from the main flow channel (11), the first branch flow channel (12) extends to the outer side surface of the injection seat (1) and forms a connecting port (13), and the connecting port (13) is connected to a level meter (15) arranged on the side surface of the injection seat (1) through a drainage pipe (14) to detect the height of the lubricating oil liquid level in the barrel cavity (2).

7. The injection seat pre-plasticized bearing cooling and lubrication system according to claim 6, characterized in that: The main channel (11) also has a second branch channel (16) extending transversely, the second branch channel (16) extending to the outer side of the injection seat (1) and forming an oil drain hole (17), and a second sealing plug (18) is arranged on the oil drain hole (17).

8. The injection seat pre-plasticized bearing cooling and lubrication system according to claim 6 or 7, characterized in that: An emergency oil drain hole (19) extends downward from the lower end of the main channel (11); the emergency oil drain hole (19) extends to the bottom of the injection seat (1) and is provided with a third sealing plug (20).

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