Lubricating structure for long hinge steel sleeve and large pin shaft of movable template of injection molding machine

Abstract

The utility model relates to a lubricating structure for a long hinged steel sleeve and a large pin shaft of a movable template of an injection molding machine. The device comprises a long hinge steel sleeve, a large pin shaft and a movable template, the large pin shaft is arranged in the long hinge steel sleeve, the movable template is sleeved on the outer surface of the long hinge steel sleeve in a penetrating mode, a closed-loop oil passing groove is formed outside the long hinge steel sleeve, an oil injection channel for injecting oil into the closed-loop oil passing groove is formed in the movable template, and an oil injection hole is formed in the closed-loop oil passing groove. The inner surface of the long hinge steel sleeve is provided with an open-ring-shaped oil passing groove with the angle alpha ranging from 90 degrees to 130 degrees in the circumferential direction, and the open-ring-shaped oil passing groove is communicated with the oil passing groove. The installation angle beta of the long hinged steel sleeve and the movable mold plate is within the range of-10 degrees to 40 degrees of clockwise deflection of the oil injection hole and the movable mold plate in the vertical direction. The open-ring-shaped oil passing groove can store lubricating oil to continuously lubricate the main stress surfaces of the long hinge steel sleeve and the large pin shaft, the lubricating oil in the oil passing groove does not cause an oil quantity gap due to gravity, the phenomenon of oil-free occlusion of the steel sleeve is avoided, and damage caused by continuous stress during working is reduced.

Description

Technical Field

[0001] This utility model relates to a lubrication structure for a long hinge steel sleeve and a large pin shaft of an injection molding motor template. Background Technology

[0002] A conventional injection molding machine consists of the following systems: 1. Injection system, 2. Melting system, 3. Cooling system, 4. Control system, 5. Hydraulic transmission system, 6. Electrical control system, 7. Lubrication system, 8. Heating and cooling system, and 9. Safety monitoring system. The lubrication system ensures that all components of the injection molding machine receive proper lubrication, reducing wear and friction and extending the equipment's service life. In the mold clamping mechanism of the injection molding machine, because the moving platen needs to operate frequently, the long hinge steel sleeve and the large pin shaft inside have a large contact area, requiring an additional lubrication structure within the steel sleeve. However, common steel sleeve lubrication structures are often manufactured in a simple and crude manner, frequently with only one oil passage. This causes the lubricating oil in the oil groove of the steel sleeve to often slide downwards due to gravity, resulting in a lack of oil and engagement on certain stress surfaces. Furthermore, due to long-term stress and frequent friction, high temperatures and abnormal noises are easily generated, leading to significant wear on core components. Utility Model Content

[0003] The purpose of this invention is to provide a lubrication structure for the long hinge steel sleeve and large pin shaft of an injection molding machine template that can effectively lubricate the main contact surfaces.

[0004] The above objectives are achieved in this way.

[0005] A lubrication structure for a long hinge steel sleeve and a large pin shaft of an injection molding machine template includes a long hinge steel sleeve, a large pin shaft, and a moving template. The large pin shaft is disposed inside the long hinge steel sleeve, and the moving template is sleeved on the outer surface of the long hinge steel sleeve. The outer surface of the long hinge steel sleeve is provided with a closed-loop oil groove, and the moving template body is provided with an oil injection channel for injecting oil into the closed-loop oil groove. The closed-loop oil groove is provided with an oil injection hole, which connects the inner and outer surfaces of the long hinge steel sleeve. The inner surface of the long hinge steel sleeve is provided with at least four oil grooves, which extend along the axial direction of the long hinge steel sleeve and are arranged in parallel at intervals. The large pin shaft and the long hinge steel sleeve are tightly fitted so that lubricating oil can be stored in the oil grooves. The inner surface of the long hinge steel sleeve is provided with an open-loop oil groove with an angle α between 90 and 130 degrees along the circumferential direction, and the open-loop oil groove is connected to the oil groove.

[0006] The installation angle β between the long hinge steel sleeve and the moving template is within -10 to 40 degrees clockwise from the vertical direction of the oil injection hole and the moving template.

[0007] The objective of this utility model can be further optimized by the following technical measures.

[0008] Preferably, the open annular oil groove is connected to the oil injection hole.

[0009] Preferably, the open annular oil passage groove connects at least two oil passage grooves.

[0010] Preferably, the oil channel is straight.

[0011] Preferably, the closed-loop oil groove is located in the middle of the outer surface of the long hinge steel sleeve.

[0012] Preferably, the long hinge steel sleeve is provided with an installation mark, the position of which is on the same horizontal line as the oil injection hole. The long hinge steel sleeve is inserted into the vertical direction of the moving template at the position of the installation mark by 30º clockwise, which is the installation position.

[0013] After adopting the above technical solution, this utility model determines the angle α of the annular oil groove based on the main force-bearing surface generated during the movement of the moving template, and sets the installation angle of the long hinge steel sleeve to β. When the long hinge steel sleeve is embedded in the moving template, it is embedded clockwise in the vertical direction of the moving template according to the mark on the long hinge steel sleeve (the mark position is on the same horizontal line as the oil injection hole). The area of ​​the annular oil groove corresponding to the installation angle β is the main force-bearing surface in the contact surface between the long hinge steel sleeve and the large pin. When lubricating oil is injected into the oil injection hole of the moving template, the annular oil groove can store lubricating oil to ensure continuous lubrication of the main force-bearing surface in the contact surface between the long hinge steel sleeve and the large pin. The lubricating oil in the oil groove will not have an oil shortage due to gravity, avoiding the phenomenon of oilless seizing of the steel sleeve and reducing the damage caused by continuous force during operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a long hinge steel sleeve.

[0015] Figure 2 This is the main view of the long hinge steel sleeve.

[0016] Figure 3 for Figure 2 AA sectional view.

[0017] Figure 4 This is a schematic diagram showing the combination of the moving template, the long hinge steel sleeve, and the large pin shaft.

[0018] Figure 5 for Figure 4 Enlarged view of part B. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Combination Figures 1 to 5A lubrication structure for a long hinge steel sleeve and a large pin shaft of a moving template in injection molding includes a long hinge steel sleeve 1, a large pin shaft 3 and a moving template 2. The large pin shaft 3 is disposed inside the long hinge steel sleeve 1, and the moving template 2 is sleeved on the outer surface of the long hinge steel sleeve 1. The outer surface of the long hinge steel sleeve 1 is provided with a closed-loop oil groove 13, which is located in the middle of the outer surface of the long hinge steel sleeve 1.

[0021] Combination Figure 3 The moving template 2 body is provided with an oil injection channel 21 for injecting oil into the closed-loop oil groove 13. The closed-loop oil groove 13 is provided with an oil injection hole 12, which connects the inner and outer surfaces of the long hinge steel sleeve 1. The inner surface of the long hinge steel sleeve 1 is provided with at least 4 oil grooves 11. In this embodiment, the inner surface of the long hinge steel sleeve 1 is provided with at least 6 oil grooves 11. The oil grooves 11 are straight and extend along the axial direction of the long hinge steel sleeve 1. The 6 oil grooves 11 are arranged in parallel at intervals. The large pin 3 is tightly fitted with the long hinge steel sleeve 1 so that the lubricating oil can be stored in the oil grooves 11 and 14.

[0022] Combination Figure 5 The inner surface of the long hinge steel sleeve 1 is provided with an open annular oil passage groove 14 with an angle α ranging from 90 to 130 degrees along the circumferential direction. The open annular oil passage groove connects at least two oil passage grooves 11, and the groove body of the open annular oil passage groove is connected to the oil injection hole 12.

[0023] Combination Figure 1 The long hinge steel sleeve 1 is provided with an installation mark 15, which is located on the same horizontal line as the oil injection hole 12. The long hinge steel sleeve 1 is inserted into the moving template at the position of the installation mark 15, which is 30° clockwise. After the long hinge steel sleeve 1 is installed into the moving template 2, the oil injection hole 12 is deflected within the range of -10° to 40° clockwise relative to the moving template 2.

Claims

1. A lubricating structure of a long hinge steel sleeve and a large pin shaft of a movable mold plate of an injection molding machine, comprising a long hinge steel sleeve, a large pin shaft and a movable mold plate, the large pin shaft is arranged inside the long hinge steel sleeve, the movable mold plate is sleeved on the outer surface of the long hinge steel sleeve, the outer surface of the long hinge steel sleeve is provided with a closed loop oil groove, the movable mold plate is provided with an oil injection channel for injecting oil into the closed loop oil groove, the closed loop oil groove is provided with an oil injection hole, the oil injection hole is communicated between the inner and outer surfaces of the long hinge steel sleeve, the inner surface of the long hinge steel sleeve is provided with at least four oil grooves, the oil grooves extend along the axial direction of the long hinge steel sleeve, and the oil grooves are arranged in parallel at intervals, the large pin shaft is closely combined with the long hinge steel sleeve so that lubricating oil can be stored in the oil grooves, characterized in that: The inner surface of the long hinge steel sleeve is provided with an open ring-shaped oil passing groove with an angle α of 90-130 degrees in the circumferential direction, and the open ring-shaped oil passing groove is connected with the oil groove; ​ The installation angle β of the long hinge steel sleeve and the movable die plate is within 10-40 degrees clockwise deflection of the oil injection hole and the vertical direction of the movable die plate.

2. The lubricating structure of the long hinge steel sleeve and the large pin shaft of the movable template of the injection molding machine according to claim 1, characterized in that: The open ring-shaped oil passing groove is communicated with the oil injection hole.

3. The lubricating structure of the long hinge steel sleeve and the large pin shaft of the movable template of the injection molding machine according to claim 1, characterized in that: The open ring-shaped oil passing groove is communicated with at least two oil passing grooves.

4. The lubricating structure of the long hinge steel sleeve and the large pin shaft of the movable template of the injection molding machine according to claim 1, characterized in that: The oil passing groove is in a straight line shape.

5. The lubricating structure of the long hinge steel sleeve and the large pin shaft of the movable template of the injection molding machine according to claim 1, characterized in that: The closed ring-shaped oil passing groove is located in the middle of the outer surface of the long hinge steel sleeve.

6. The lubricating structure of the long hinge steel sleeve and the large pin shaft of the movable template of the injection molding machine according to claim 1, characterized in that: An installation mark is arranged on the long hinge steel sleeve, and the installation mark is located on the same horizontal line as the oil injection hole. The long hinge steel sleeve is embedded in the movable die plate with the installation mark position 30º clockwise to the vertical direction of the movable die plate as the installation position.

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