Injection mold for a new type of oil tank with sliding mechanism

Abstract

The utility model provides a novel oil tank's injection mold with sliding mechanism, including upper die mechanism and lower die mechanism, and the lower die mechanism includes lower die body, sliding insert, movable die insert, movable die plate and support plate, is equipped with the forming cavity in the middle of upper die mechanism and lower die mechanism, the sliding insert is fixed in support plate top surface, the movable die insert is fixed in movable die plate middle part, the movable die insert slidingly covers the sliding insert, is equipped with novel oil tank in the sliding insert side, is equipped with the oil hole in support plate bottom, the oil hole top is connected in novel oil tank, novel oil tank adopts one -way Tesla valve mechanism, and its downstream direction is novel oil tank towards the oil hole direction, and the oil hole bottom is connected with outside. The utility model sets up novel oil tank, and novel oil tank adopts one -way Tesla valve structure, increases the storage of lubricating grease, reduces the risk that impurity follows novel oil tank and flows into the forming cavity.

Description

Technical Field

[0001] This utility model relates to the field of sliding mechanism oil groove technology, and in particular to an injection mold for a novel oil groove with a sliding mechanism. Background Technology

[0002] With societal development, products in industrial production are becoming increasingly sophisticated and complex. During mold operation, multiple sliding mechanisms are often required internally to assist in product forming. Current practices involve machining oil grooves on the sliding surfaces of these mechanisms and applying high-temperature oil during production to lubricate the friction surfaces and reduce friction. Traditional oil grooves come in various types, such as dot grooves, grid grooves, and cross grooves. However, traditional oil grooves lack directionality. When the lubricating grease contains impurities, these impurities can enter the molding cavity, causing product defects. Furthermore, during high-temperature injection molding, the amount of lubricating grease applied is difficult to control. Insufficient lubrication leads to poor lubrication and can cause jamming and burning, while excessive application can overflow or seep into the molding cavity, resulting in oil stains and other cosmetic defects on the product. Utility Model Content

[0003] In view of this, the present invention proposes a novel injection mold for an oil groove with a sliding mechanism to solve the problems mentioned above.

[0004] The technical solution of this utility model is implemented as follows: An injection mold with a novel oil groove featuring a sliding mechanism includes an upper mold mechanism and a lower mold mechanism. The lower mold mechanism includes a sliding insert, a moving mold insert, a moving template, and a support plate. A molding cavity is provided between the upper mold mechanism and the lower mold mechanism. The sliding insert is fixed to the top surface of the support plate. The moving mold insert is fixed to the middle of the moving template and slidably fitted onto the sliding insert. The sliding insert has an annular novel oil groove on its side. The novel oil groove is composed of multiple one-way Tesla valve units connected continuously. The support plate has an oil drain hole at its bottom, with its top communicating with the novel oil groove and its bottom communicating with the outside. The flow direction of the one-way Tesla valve units is that the novel oil groove faces the oil drain hole.

[0005] Preferably, the moving mold insert is located inside the molding cavity, and the moving mold insert is clearance-fitted with the sliding insert.

[0006] The one-way Tesla valve unit includes a main flow channel and a branch flow channel. The bottom of the main flow channel is connected to the oil drain hole, and the top extends to the upper end of the sliding insert.

[0007] Preferably, it also includes an oil reservoir groove, which is located on the top side of the sliding insert and communicates with the top of the one-way Tesla valve unit.

[0008] Compared with the prior art, the beneficial effects of this utility model are: A new type of oil groove is designed, which adopts a one-way Tesla valve structure to increase the storage space of lubricating grease. By utilizing the principle that the resistance increases with the sliding speed when the Tesla valve flows back, the flow of lubricating grease toward the molding cavity is reduced. At the same time, it prevents the lubricating grease from carrying impurities into the molding cavity and reduces the mold maintenance cycle. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a cross-sectional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the novel oil tank of this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Reference numerals in the attached drawings: 1. Sliding insert; 2. New type of oil groove; 201. Main channel; 202. Diversion channel; 3. Oil drain hole; 4. Moving mold insert; 5. Moving mold plate; 6. Support plate; 7. Oil storage ring groove. Detailed Implementation

[0011] To better understand the technical content of this utility model, a specific embodiment is provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0012] See Figures 1 to 3 This utility model provides an injection mold for a novel oil groove with a sliding mechanism, including an upper mold mechanism and a lower mold mechanism. The lower mold mechanism includes a sliding insert 1, a moving mold insert 4, a moving template 5, and a support plate 6. A molding cavity is provided between the upper mold mechanism and the lower mold mechanism. The sliding insert 1 is fixed to the top surface of the support plate 6. The moving mold insert 4 is fixed in the middle of the moving template 5 and slidably sleeved on the sliding insert 1. The side of the sliding insert 1 is provided with an annular novel oil groove 2. The novel oil groove 2 is composed of multiple one-way Tesla valve units connected continuously. The multiple one-way Tesla valve units are evenly arranged along the circumference of the sliding insert 1. The side of each valve body is connected to the adjacent valve body through a coplanar wall to form a continuous flow guiding structure. The bottom of the support plate 6 is provided with an oil drain hole 3. Its top is connected to the novel oil groove 2 and its bottom is connected to the outside. The flow direction of the one-way Tesla valve unit is that the novel oil groove 2 faces the oil drain hole 3.

[0013] Before performing injection molding, the mold is first assembled. The moving mold insert 4 is fastened to the moving mold plate 5 with screws. Then, lubricating grease is applied to the new oil groove 2 on the side wall of the sliding insert 1. The sliding insert 1 is then inserted from the front end of the moving mold insert 4 and fixed to the support plate with screws. The mold assembly is then checked and completed.

[0014] When the injection mold is in operation, after the molded product has cooled, the lower mold mechanism is activated. The support plate 6 descends, causing the sliding insert 1 to descend relative to the moving mold insert 4. At this time, the lubricating grease is subjected to the adhesive force on the side of the sliding insert 1, and flows downward faster in the new oil groove 2, improving the lubrication effect and preventing the sliding insert 1 from being burned. When the lubricating grease contains impurities, the impurities flow downward along the Tesla valve with the lubricating grease and are discharged from the working area of ​​the mold through the bottom oil drain hole 3. After the molded product is demolded, the lower mold mechanism is activated for reset. The support plate 6 rises, causing the sliding insert 1 to rise relative to the moving mold insert 4. At this time, the lubricating grease is subjected to the adhesive force on the side of the sliding insert 1, and flows upward against the current and slows down in the new oil groove 2, preventing the lubricating grease from flowing into the molding cavity and avoiding impurities carried by the lubricating grease from entering the molding cavity and causing product defects.

[0015] Preferably, the moving mold insert 4 is located inside the molding cavity, and the moving mold insert 4 is clearance-fitted with the sliding insert 1.

[0016] The radial clearance between the sliding insert 1 and the moving mold insert 4 is controlled at 0.02 to 0.05 mm, with an H7 / f6 fit, which can balance the flexibility of movement and the oil film bearing capacity.

[0017] Preferably, the one-way Tesla valve unit includes a main flow channel 201 and a branch flow channel 202. The bottom of the main flow channel 201 is connected to the oil drain hole 3, and the top extends to the upper end of the sliding insert 1.

[0018] When the sliding insert 1 slides up and down, it drives the lubricating grease to flow in the new oil groove 2. The main channel 201 serves as the main oil passage, undertaking the function of low-resistance conduction during forward flow. When the lubricating grease contains impurities, the impurities can be discharged from the oil drain hole 3. The diversion channel 202 adopts a typical Tesla valve topology structure, forming a pressure gradient field through multi-stage tapering and expanding sections, thereby slowing down the flow of lubricating grease and preventing impurities and lubricating grease from entering the molding cavity.

[0019] Preferably, it also includes an oil storage ring groove 7, which is located on the top side of the sliding insert 1 and communicates with the top of the one-way Tesla valve unit.

[0020] The oil storage ring groove 7 is used to store lubricating grease. When the sliding insert 1 slides upward, the lubricating grease in the new oil groove 2 flows into the oil storage ring groove 7. When the sliding insert 1 slides downward, the lubricating grease in the new oil groove 2 flows out of the oil storage ring groove 7, thus preventing the lubricating grease from overflowing.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel injection mold for an oil groove with a sliding mechanism, characterized in that, The device includes an upper mold mechanism and a lower mold mechanism. The lower mold mechanism includes a sliding insert, a moving mold insert, a moving template, and a support plate. A forming cavity is provided between the upper mold mechanism and the lower mold mechanism. The sliding insert is fixed to the top surface of the support plate. The moving mold insert is fixed in the middle of the moving template and slidably sleeved on the sliding insert. The side of the sliding insert is provided with an annular novel oil groove. The novel oil groove is composed of multiple one-way Tesla valve units connected continuously. The bottom of the support plate is provided with an oil drain hole. Its top is connected to the novel oil groove, and its bottom is connected to the outside. The flow direction of the one-way Tesla valve unit is that the novel oil groove faces the oil drain hole.

2. The injection mold for a novel oil groove with a sliding mechanism according to claim 1, characterized in that, The moving mold insert is located inside the molding cavity, and the moving mold insert is clearance-fitted with the sliding insert.

3. The injection mold for a novel oil groove with a sliding mechanism according to claim 1, characterized in that, The one-way Tesla valve unit includes a main flow channel and a branch flow channel. The bottom of the main flow channel is connected to the oil drain hole, and the top extends to the upper end of the sliding insert.

4. The injection mold for a novel oil groove with a sliding mechanism according to claim 1, characterized in that, It also includes an oil reservoir groove, which is located on the top side of the sliding insert and communicates with the top of the one-way Tesla valve unit.

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