Injection mold with guide structure

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold with a guide structure, which comprises a bottom plate, supporting legs, a door frame, a hydraulic cylinder, an upper mold, a lower mold, a positioning rod, a limiting hole, the guide structure, a lubricating component and a circulating component, through cooperative operation of the guide structure, the lubricating assembly and the circulating assembly, the upper die can accurately move according to a preset track and then can be accurately assembled with the lower die, and friction between the sliding ring and the guide rod can be further reduced by providing lubricating oil, so that the sliding efficiency is improved, and the service life of the sliding ring is prolonged. The circulating assembly can recycle the lubricating oil, continuous supply and cyclic utilization of the lubricating oil are guaranteed, in addition, friction between the sliding ring and the guide rod is reduced through the balls, abrasion is reduced, and the sliding efficiency can be further improved through cooperation of the balls and the lubricating oil on the outer wall of the guide rod.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with a guide structure. Background Art

[0002] Injection molds are tools for producing plastic products. They are made by injecting molten plastic material into the mold cavity under high pressure using an injection molding machine, and then forming it after solidification. They have the characteristics of fast production speed and high efficiency. In order to ensure that the position of the injection mold will not shift after opening and closing, a guide structure is generally designed.

[0003] However, the guide structures of current injection molds generally lack lubrication devices, which makes the guide structures susceptible to wear during use. The accumulation of wear will gradually affect the accuracy of the guide structure, thereby reducing the mold closing accuracy and overall operating efficiency.

[0004] Therefore, in view of the fact that the guide structure of the above-mentioned injection mold generally lacks a lubrication device, which leads to a reduction in the accuracy of mold closing after long-term operation, an injection mold with a guide structure can be designed. By adding a lubrication effect to the guide structure and setting a rolling structure, the problem of reduced mold closing accuracy caused by long-term wear of the guide structure can be avoided. Utility Model Content

[0005] In order to overcome the problem that the guide structure of the injection mold generally lacks a lubrication device, which leads to a reduction in the accuracy of the mold when closing the mold after a long period of work.

[0006] The technical solution of the utility model is: an injection mold with a guide structure, including a base plate, support legs, a door frame, a hydraulic cylinder, an upper mold, a lower mold, a positioning rod, a limiting hole, a guide structure, a lubrication component and a circulation component; the lower end of the base plate is fixedly connected to four support legs for support, the upper end of the base plate is fixedly connected to a group of door frames, the lower end of the door frames is symmetrically installed with two hydraulic cylinders, the lower ends of the power output elements of the two hydraulic cylinders are fixedly connected to the upper end of the upper mold, the four corners of the lower end of the upper mold are respectively fixedly connected to the positioning rods, the lower mold is fixedly connected to the upper end of the base plate, and the four corners of the upper end of the lower mold are correspondingly provided with limiting holes adapted to the positioning rods, the guide structure is fixedly connected between the door frame and the base plate, the lubrication component is installed at the upper end of the base plate, and the circulation component is installed at the lower end of the base plate.

[0007] Preferably, the base plate is the basic part of the entire injection mold, the support legs are used to support the entire device, and the gantry is used to install the hydraulic cylinder. The hydraulic cylinder is the power source of the injection mold. Through its telescopic movement, it drives the upper mold to move up and down to realize mold closing and mold opening. The upper mold and the lower mold together constitute the cavity of the injection mold, which is used to form the shape and size of the plastic product. The positioning rod and the limit hole are positioning structures in the injection mold, which are used to ensure the precise alignment of the upper mold and the lower mold during the mold closing process. The guide structure is used to guide the smooth movement of the upper mold and prevent it from offsetting. The lubrication assembly is used to lubricate the guide rod, thereby reducing the wear of the upper mold on the guide rod when it moves. The circulation assembly is used to recover the sprayed lubricating oil, thereby saving materials.

[0008] Preferably, the guide structure includes a guide rod and a limit frame; the limit frame is annular and symmetrically fixed to the upper end of the base plate, the lower end of the guide rod is fixed to the upper end of the base plate and is located in the corresponding limit frame, the upper end of the guide rod is fixed to the lower end of the door frame, and the guide rod plays a guiding and supporting role in the guide structure. It ensures that the upper mold can move along a predetermined trajectory to prevent deviation or shaking. The limit frame serves as an auxiliary component of the guide structure to isolate the lubricating oil, so that the lubricating oil can all pass through the oil hole, while also avoiding the problem of lubricating oil contaminating the base plate.

[0009] Preferably, the lubrication assembly includes a No. 1 water pump and an oil storage tank; the No. 1 water pump is installed at the upper end of the gantry, and the oil storage tank is installed at the upper end of the gantry and is located on the left side of the No. 1 water pump. The water inlet port of the No. 1 water pump is connected to the oil outlet of the oil storage tank through a hose. The No. 1 water pump is the power source of the lubrication assembly and is responsible for extracting the lubricating oil from the oil storage tank and pressurizing it into the annular pipe. The oil storage tank is used to store the lubricating oil and provide sufficient oil for the entire lubrication system.

[0010] Preferably, the lubrication assembly includes a fixing seat, an annular tube, an oil outlet hole and an oil outlet pipe; the fixing seat has two and is symmetrically fixed to the lower end of the door frame, the inner wall of the fixing seat is provided with an annular mounting groove, an annular tube is provided in the mounting groove, the outer wall of the annular tube is provided with an oil outlet hole, the oil inlet port of the oil outlet pipe is connected to the water outlet port of the No. 1 water pump, and the oil outlet port of the oil outlet pipe is connected to the annular tube, the fixing seat provides a stable support and installation basis for the annular tube, the inner wall of the fixing seat is provided with an annular mounting groove, and the annular tube sprays the lubricating oil evenly onto the outer wall of the guide rod through the oil outlet hole, so that the lubricating oil can flow along the guide rod to the lower end, and then the entire outer wall of the guide rod is covered with lubricating oil.

[0011] Preferably, the lubrication assembly also includes a sliding ring and a ball; the sliding ring has two through grooves with a through groove in the center, and the inner wall of the through groove is provided with a ball. The side end of the sliding ring is fixedly connected to the side end of the upper mold, and the two sliding rings are connected to the outer wall of the guide rod through the rolling of the ball. The sliding ring serves as a sliding connection between the upper mold and the guide rod, and the ball reduces the friction between the sliding ring and the guide rod, reduces wear, and cooperates with the lubricating oil on the outer wall of the guide rod to improve the sliding efficiency.

[0012] Preferably, the circulation component includes an oil hole and a No. 2 water pump; the upper end of the base plate is penetrated by an oil hole, the oil hole is located in the limit frame, the lower end of the base plate is installed with a bracket, and the No. 2 water pump is installed at the upper end of the bracket. The oil hole is one of the channels for the circulation of the lubricating oil, which allows the lubricating oil to flow from the upper end of the base plate to the lower end of the base plate, and then be extracted by the No. 2 water pump and sent back to the oil storage tank, forming a circulation of the lubricating oil. The No. 2 water pump is the power source of the circulation component, and is responsible for extracting the lubricating oil from the oil hole and sending it back to the oil storage tank through the oil pipe, thereby maintaining the circulation of the lubricating oil.

[0013] Preferably, the circulation component also includes a three-way oil pipe and an oil delivery pipe; the oil inlet port of the three-way oil pipe is fixedly connected to the lower end of the oil hole, the oil outlet port of the three-way oil pipe is connected to the water inlet port of the No. 2 water pump, and the water outlet port of the No. 2 water pump is connected to the oil inlet of the oil storage tank through the oil delivery pipe. The three-way oil pipe is a component connecting the oil hole and the No. 2 water pump, which allows lubricating oil to flow into the oil hole and be diverted to the water inlet port of the No. 2 water pump. The three-way oil pipe has three ports, specifically two inlets and one outlet, to realize the flow direction control of the lubricating oil. The oil delivery pipe is a pipe connecting the No. 2 water pump and the oil storage tank, which is responsible for returning the lubricating oil extracted by the No. 2 water pump to the oil storage tank to complete the circulation of the lubricating oil.

[0014] Beneficial effects of the utility model:

[0015] 1. The coordinated operation of the guide structure, lubrication component, and circulation component not only ensures that the upper mold moves accurately along the predetermined trajectory and thus precisely closes with the lower mold, but also further reduces the friction between the sliding ring and the guide rod by providing lubricating oil, thereby improving the sliding efficiency. The circulation component will recycle the lubricating oil, ensuring the continuous supply and recycling of lubricating oil.

[0016] 2. The balls reduce the friction between the sliding ring and the guide rod, reducing wear. Combined with the lubricating oil on the outer wall of the guide rod, the sliding efficiency can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the injection mold with a guide structure of the utility model;

[0018] Figure 2Shown is a front view schematic diagram of the injection mold with a guide structure of the utility model;

[0019] Figure 3 Shown is a top view schematic diagram of the injection mold with a guide structure of the utility model;

[0020] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the guide structure of the injection mold with the guide structure of the utility model;

[0021] Figure 5 Shown is a schematic diagram of the three-dimensional structure of the injection mold lubrication component with a guide structure of the utility model;

[0022] Figure 6 What is shown is a schematic diagram of the three-dimensional structure of the injection mold circulation component with a guide structure of the present invention.

[0023] Explanation of the mold figure markings: 1. Base plate; 2. Support leg; 3. Door frame; 4. Hydraulic cylinder; 5. Upper mold; 6. Lower mold; 7. Positioning rod; 8. Limiting hole; 901. Guide rod; 902. Limiting frame; 1001. Water pump No. 1; 1002. Oil storage tank; 1003. Fixed seat; 1004. Annular pipe; 1005. Oil outlet hole; 1006. Oil outlet pipe; 1007. Sliding ring; 1008. Ball; 1101. Oil hole; 1102. Water pump No. 2; 1103. Three-way oil pipe; 1104. Oil pipeline. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See also Figure 1-Figure 3The utility model provides an embodiment: an injection mold with a guide structure, including a base plate 1, support legs 2, a door frame 3, a hydraulic cylinder 4, an upper mold 5, a lower mold 6, a positioning rod 7, a limiting hole 8, a guide structure, a lubrication component and a circulation component; the lower end of the base plate 1 is fixedly connected to four support legs 2 for support, the upper end of the base plate 1 is fixedly connected to a group of door frames 3, the lower end of the door frames 3 is symmetrically installed with two hydraulic cylinders 4, the lower ends of the power output elements of the two hydraulic cylinders 4 are fixedly connected to the upper end of the upper mold 5, the four corners of the lower end of the upper mold 5 are respectively fixedly connected to the positioning rod 7, the lower mold 6 is fixedly connected to the upper end of the base plate 1, and the four corners of the upper end of the lower mold 6 are correspondingly provided with limiting holes 8 adapted to the positioning rod 7, the guide structure is fixedly connected between the door frame 3 and the base plate 1, the lubrication component is installed at the upper end of the base plate 1, the circulation component The component is installed at the lower end of the base plate 1. The base plate 1 is the basic part of the entire injection mold. The support leg 2 is used to support the entire device. The door frame 3 is used to install the hydraulic cylinder 4. The hydraulic cylinder 4 is the power source of the injection mold. Through its telescopic movement, it drives the upper mold 5 to move up and down to realize the mold closing and opening actions. The upper mold 5 and the lower mold 6 together constitute the cavity of the injection mold, which is used to form the shape and size of the plastic product. The positioning rod 7 and the limit hole 8 are positioning structures in the injection mold, which are used to ensure the precise alignment of the upper mold 5 and the lower mold 6 during the mold closing process. The guide structure is used to guide the smooth movement of the upper mold 5 and prevent it from offsetting. The lubrication component is used to lubricate the guide rod 901, thereby reducing the wear of the upper mold 5 on the guide rod 901 when it moves. The circulation component is used to recycle the sprayed lubricating oil, thereby saving materials.

[0026] See also Figure 4 and Figure 6In this embodiment, the guide structure includes a guide rod 901 and a limit frame 902; the limit frame 902 is annular and symmetrically fixed to the upper end of the base plate 1, the lower end of the guide rod 901 is fixedly connected to the upper end of the base plate 1 and is located in the corresponding limit frame 902, the upper end of the guide rod 901 is fixedly connected to the lower end of the door frame 3, and the guide rod 901 plays a guiding and supporting role in the guide structure. It ensures that the upper mold 5 can move along a predetermined trajectory to prevent deviation or shaking. The limit frame 902 serves as an auxiliary component of the guide structure to isolate the lubricating oil. 1102 is installed on the upper end of the bottom plate 1, and the oil inlet port of the three-way oil pipe 1103 is fixedly connected to the lower end of the oil hole 1101, and the oil inlet port of the three-way oil pipe 1103 is fixedly connected to the lower end of the oil hole 1101. The oil outlet port of 1103 is connected to the water inlet port of the second water pump 1102, and the water outlet port of the second water pump 1102 is connected to the oil inlet of the oil storage tank 1002 through the oil pipe 1104. The oil hole 1101 is one of the channels for the circulation of lubricating oil. It allows the lubricating oil to flow from the upper end of the bottom plate 1 to the lower end of the bottom plate 1, and then be extracted by the second water pump 1102 and sent back to the oil storage tank 1002, forming a circulation of lubricating oil. The second water pump 1102 is the power source of the circulation component, responsible for extracting the lubricating oil in the oil hole 1101 and sending it out through the oil pipe 1104. Return to the oil storage tank 1002, thereby maintaining the circulation of the lubricating oil. The three-way oil pipe 1103 is a component connecting the oil hole 1101 and the No. 2 water pump 1102. It allows the lubricating oil to flow in from the oil hole 1101 and be diverted to the water inlet port of the No. 2 water pump 1102. The three-way oil pipe 1103 has three ports, specifically two inlets and one outlet, to realize the flow direction control of the lubricating oil. The oil delivery pipe 1104 is a pipeline connecting the No. 2 water pump 1102 and the oil storage tank 1002, which is responsible for sending the lubricating oil extracted by the No. 2 water pump 1102 back to the oil storage tank 1002 to complete the circulation of the lubricating oil.

[0027] See also Figure 5In this embodiment, the lubrication assembly includes a water pump 1001 and an oil storage tank 1002; the water pump 1001 is installed at the upper end of the mast 3, and the oil storage tank 1002 is installed at the upper end of the mast 3 and is located on the left side of the water pump 1001. The water inlet port of the water pump 1001 is connected to the oil outlet of the oil storage tank 1002 through a hose. The lubrication assembly also includes a fixing seat 1003, an annular pipe 1004, an oil outlet hole 1005 and an oil outlet pipe 1006; the fixing seat 1003 has two and is fixedly connected to the mast symmetrically on the left and right. 3, an annular mounting groove is provided on the inner wall of the fixing seat 1003, an annular tube 1004 is provided in the mounting groove, an oil outlet hole 1005 is provided on the outer wall of the annular tube 1004, an oil inlet port of the oil outlet pipe 1006 is connected to the water outlet port of the first water pump 1001, and the oil outlet port of the oil outlet pipe 1006 is connected to the annular tube 1004. The lubrication assembly further includes a sliding ring 1007 and a ball 1008; the sliding ring 1007 has two through grooves with a through groove in the center, and the inner wall of the through groove is provided with a ball 1008. The side ends of the sliding ring 1007 are fixedly connected to the side ends of the upper mold 5. The two sliding rings 1007 are rollingly connected to the outer wall of the guide rod 901 through the ball bearings 1008. The No. 1 water pump 1001 is the power source of the lubricating assembly, responsible for extracting the lubricating oil from the oil tank 1002 and pressurizing it to the annular tube 1004. The oil tank 1002 is used to store the lubricating oil and provide sufficient oil for the entire lubrication system. The fixed seat 1003 provides a stable support and installation foundation for the annular tube 1004, and its inner wall is provided with an annular The annular tube 1004 sprays the lubricating oil evenly onto the outer wall of the guide rod 901 through the oil outlet 1005, so that the lubricating oil can flow along the guide rod 901 to the lower end, and then the entire outer wall of the guide rod 901 is covered with the lubricating oil. The sliding ring 1007 serves as a sliding connection between the upper mold 5 and the guide rod 901, and the ball 1008 reduces the friction between the sliding ring 1007 and the guide rod 901, reduces wear, and cooperates with the lubricating oil on the outer wall of the guide rod 901 to improve the sliding efficiency.

[0028] During the workflow, the staff starts the hydraulic cylinder 4, driving the upper mold 5 to slowly descend. At the same time, the No. 1 water pump 1001 is activated, drawing lubricating oil from the oil tank 1002, pressurizing it and delivering it to the annular pipe 1004. The annular pipe 1004 sprays the lubricating oil onto the outer surface of the guide rod 901 through the oil outlet 1005, ensuring that the lubricating oil can smoothly flow along the guide rod 901 to its lower end, fully covering the outer wall of the guide rod 901. Under such lubricating conditions, the sliding ring 1007 slides on the outer wall of the guide rod 901 more smoothly and efficiently with the help of the ball bearing 1008.

[0029] As the upper mold 5 gradually approaches the lower mold 6, the precise coordination between the positioning rod 7 and the limiting hole 8 ensures that the two can be accurately closed. At this time, the No. 2 water pump 1102 is also started in time. It extracts the used lubricating oil from the oil hole 1101 and returns it to the oil tank 1002 through the oil pipe 1104, so as to maintain the circulation flow of the lubricating oil system.

[0030] Through the above steps, through the coordinated operation of the guide structure, lubrication component and circulation component, not only can the upper mold 5 be accurately moved according to the predetermined trajectory and then accurately closed with the lower mold 6, but also the friction between the sliding ring 1007 and the guide rod 901 can be further reduced by providing lubricating oil, thereby improving the sliding efficiency. The circulation component will recycle the lubricating oil to ensure the continuous supply and recycling of the lubricating oil, and solve the problem that the guide structure of the injection mold generally lacks a lubrication device, which leads to a reduction in the accuracy of the mold closing after a long period of work.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. An injection mold with a guide structure, comprising a base plate (1), a support leg (2), a door frame (3), a hydraulic cylinder (4), an upper mold (5), a lower mold (6), a positioning rod (7) and a limiting hole (8); characterized in that: The invention also includes a guide structure, a lubrication component and a circulation component; the lower end of the base plate (1) is fixedly connected to four supporting legs (2); the upper end of the base plate (1) is fixedly connected to a group of door frames (3); the lower end of the door frames (3) is symmetrically installed with two hydraulic cylinders (4); the lower ends of the power output elements of the two hydraulic cylinders (4) are fixedly connected to the upper end of the upper mold (5); the four corners of the lower end of the upper mold (5) are respectively fixedly connected to positioning rods (7); the lower mold (6) is fixedly connected to the upper end of the base plate (1); the four corners of the upper end of the lower mold (6) are correspondingly provided with limiting holes (8) adapted to the positioning rods (7); the guide structure is fixedly connected between the door frame (3) and the base plate (1); the lubrication component is installed at the upper end of the base plate (1); and the circulation component is installed at the lower end of the base plate (1).

2. The injection mold with a guide structure according to claim 1, characterized in that: The guide structure comprises a guide rod (901) and a limit frame (902); the limit frame (902) is annular and fixedly connected to the upper end of the base plate (1) in a bilaterally symmetrical manner; the lower end of the guide rod (901) is fixedly connected to the upper end of the base plate (1) and is located in the corresponding limit frame (902); and the upper end of the guide rod (901) is fixedly connected to the lower end of the door frame (3).

3. The injection mold with a guide structure according to claim 2, characterized in that: The lubrication assembly comprises a water pump (1001) and an oil storage tank (1002); the water pump (1001) is mounted on the upper end of the mast (3); the oil storage tank (1002) is mounted on the upper end of the mast (3) and is located on the left side of the water pump (1001); and the water inlet port of the water pump (1001) and the oil outlet port of the oil storage tank (1002) are connected via a hose.

4. The injection mold with a guide structure according to claim 3, characterized in that: The lubrication assembly further comprises a fixing seat (1003), an annular tube (1004), an oil outlet hole (1005) and an oil outlet pipe (1006); the fixing seat (1003) has two fixing seats symmetrically connected to the lower end of the door frame (3); an annular mounting groove is provided on the inner wall of the fixing seat (1003); an annular tube (1004) is provided in the mounting groove; an oil outlet hole (1005) is provided on the outer wall of the annular tube (1004); an oil inlet port of the oil outlet pipe (1006) is connected to the water outlet port of the first water pump (1001); and an oil outlet port of the oil outlet pipe (1006) is connected to the annular tube (1004).

5. The injection mold with a guide structure according to claim 4, characterized in that: The lubrication assembly further comprises a sliding ring (1007) and a ball bearing (1008); the sliding ring (1007) has two through grooves with a central through groove, the inner wall of the through groove is provided with a ball bearing (1008), the side end of the sliding ring (1007) is fixedly connected to the side end of the upper mold (5), and the two sliding rings (1007) are both rollingly connected to the outer wall of the guide rod (901) through the ball bearing (1008).

6. The injection mold with a guide structure according to claim 5, characterized in that: The circulation component comprises an oil hole (1101) and a second water pump (1102); the upper end of the bottom plate (1) is provided with the oil hole (1101), the oil hole (1101) is located in the limit frame (902), the lower end of the bottom plate (1) is provided with a bracket, and the second water pump (1102) is provided on the upper end of the bracket.

7. The injection mold with a guide structure according to claim 6, characterized in that: The circulation assembly further comprises a three-way oil pipe (1103) and an oil delivery pipe (1104); the oil inlet port of the three-way oil pipe (1103) is fixedly connected to the lower end of the oil hole (1101), the oil outlet port of the three-way oil pipe (1103) is connected to the water inlet port of the second water pump (1102), and the water outlet port of the second water pump (1102) is connected to the oil inlet of the oil storage tank (1002) via the oil delivery pipe (1104).

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