Plastic mold for precise plastic part

Abstract

The utility model discloses a precise plastic part plastic mold which comprises a bottom plate which is arranged below a lower mold and is used for supporting the lower mold, and further comprises an upper mold which is arranged above the lower mold, a second cavity is formed in the lower end face of the upper mold, a first cavity is formed in the upper end face of the lower mold, and a second cavity is formed in the lower end face of the upper mold. Supporting mechanisms are arranged on the outer sides of the lower mold and the upper mold, an injection molding opening is fixedly connected to the upper end of the upper mold, and a connecting hole is formed in the lower end of the upper mold; and the mounting rod is connected to the interior of the lower die, the upper end of the mounting rod is connected with a guide mechanism, the lower end of the mounting rod is fixedly connected with a connecting block, and a mounting hole is formed in the lower die. The precise plastic part plastic mold is good in guiding effect, and meanwhile the problems that most of existing plastic molds cannot lubricate guiding mechanisms conveniently, guide rods are prone to deviation or deformation in the using process, mold closing of the mold is inaccurate, and the product forming precision is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a plastic mold for precision plastic parts. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. Through the coordinated changes of the mold convex and concave molds and the auxiliary molding system, a series of plastic parts of different shapes and sizes can be processed;

[0003] For example, a plastic mold for automobile precision plastic parts with a Chinese patent authorization publication number of CN217257973U includes a bottom plate, a support plate fixedly connected to the bottom plate, a fixed plate fixedly connected to the support plate, a cylinder fixedly connected to the fixed plate, a drive rod of the cylinder slidably connected to the fixed plate, an upper mold fixedly connected to the drive rod, a guide rod fixedly connected to the upper mold, a lower mold slidably sleeved on the outer side of the guide rod, a guide block fixedly connected to the upper mold, a guide sleeve slidably connected to the guide block, and the guide sleeve contacts the fixed plate, the upper mold and the lower mold respectively. The utility model can guide the movement of the upper mold by designing a sliding connection between the guide rod and the guide groove on the lower mold, so that the mold closing of the upper mold and the lower mold is more accurate, thereby improving the injection molding accuracy, and the sliding connection between the guide block and the slide groove can further guide the movement of the upper mold, so that the movement of the upper mold is more stable.

[0004] However, most of the plastic molds on the market still have some shortcomings when in use. For example, most of the existing plastic molds use a sliding connection between a guide rod and a guide groove to guide and limit the upper and lower molds, which is not convenient for lubricating the guide mechanism. The guide rod is prone to offset or deformation during use, resulting in inaccurate mold closing and affecting the product molding accuracy, and thus there are certain usage defects. Therefore, we propose a precision plastic part plastic mold to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a plastic mold for precision plastic parts to solve the problem that most of the existing plastic molds mentioned in the above background technology use a sliding connection between a guide rod and a guide groove to guide and limit the upper and lower molds, which is not convenient for lubricating the guide mechanism, and the guide rod is prone to offset or deformation during use, resulting in inaccurate mold clamping and affecting the product molding accuracy.

[0006] To achieve the above object, the utility model provides the following technical solution: a precision plastic part plastic mold, including a bottom plate installed below the lower mold, and the bottom plate is used to provide support for the lower mold, and also includes:

[0007] An upper mold is arranged above the lower mold, and a second mold cavity is formed on the lower end surface of the upper mold, a first mold cavity is formed on the upper end surface of the lower mold, and support mechanisms are provided on the outer sides of the lower mold and the upper mold, an injection port is fixedly connected to the upper end of the upper mold, and a connecting hole is formed on the lower end of the upper mold;

[0008] The mounting rod is connected to the inside of the lower mold, the upper end of the mounting rod is connected to the guide mechanism, and the lower end of the mounting rod is fixedly connected to the connecting block, the lower mold is provided with a mounting hole, and the lower end of the mounting hole is connected to the connecting hole.

[0009] Preferably, the support mechanism includes a column fixedly mounted on the upper end of the bottom plate, and a top plate is fixedly mounted on the upper end of the column.

[0010] Preferably, the support mechanism further includes a hydraulic telescopic rod fixedly mounted on the lower end of the top plate, and the hydraulic telescopic rod is fixedly connected to the upper end of the upper mold.

[0011] Preferably, the guiding mechanism comprises a guide rod fixedly connected to the upper end of the mounting rod, and an annular groove is formed on the outer surface of the guide rod, and the mounting rod is slidably connected to the lower mold through the mounting hole.

[0012] Preferably, the guide mechanism further comprises a guide block fixedly connected to the upper end of the guide rod, and oil filling holes are provided inside the guide rod and the guide block, and the oil filling holes are connected to the annular groove.

[0013] Preferably, the connecting holes and the guide mechanisms are arranged one by one in upper and lower directions.

[0014] Preferably, a mounting block is fixedly connected to the lower end of the connection block, and the mounting block is arranged below the lower mold.

[0015] Preferably, the connecting block is threadedly connected to the lower mold through a connecting hole, and the connecting hole is opened on the lower end surface of the lower mold.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the plastic mold for precision plastic parts has good guiding effect, and solves the problem that most of the existing plastic molds are not convenient for lubricating the guiding mechanism, and the guide rod is prone to offset or deformation during use, resulting in inaccurate mold clamping and affecting product molding accuracy;

[0017] 1. The hydraulic telescopic rod is used to control the lifting and lowering of the upper mold. When using the precision plastic parts plastic mold, the hydraulic telescopic rod is first extended to drive the upper mold to move down and close the mold with the lower mold. At the same time, the guide block and the guide rod are inserted into the connection hole to guide and limit the upper mold, so that the mold closing accuracy is better;

[0018] Furthermore, the connecting hole and the guide mechanism are arranged one by one up and down, and the vertical section of the guide block is arranged in a trapezoidal shape, which is convenient for being disassembled into the interior of the connecting hole. During the mold closing process, the guide mechanism is not easy to collide with the upper mold, making the practicality better;

[0019] 2. Oil filling holes are provided inside the guide rod and the guide block, and the oil filling holes are connected to the annular groove. Oil can be filled into the guide rod and the guide block through the oil filling holes, and then the oil flows into the annular groove. When the guide rod is connected to the connecting hole, the oil seeping through the annular groove can lubricate the connecting hole, reducing the friction between the guide rod and the connecting hole, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0023] Figure 4 It is a schematic diagram of the overall structure of the connection between the guide rod and the annular groove of the utility model.

[0024] In the figure: 1. bottom plate; 2. lower mold; 3. upper mold; 4. first cavity; 5. second cavity; 6. column; 7. top plate; 8. hydraulic telescopic rod; 9. injection port; 10. connecting hole; 11. mounting rod; 12. guide rod; 13. guide block; 14. oil filling hole; 15. mounting hole; 16. connecting hole; 17. annular groove; 18. connecting block; 19. mounting block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4 The utility model provides a technical solution: a precision plastic part plastic mold, including a lower mold 2 installed above a bottom plate 1, and the bottom plate 1 is used to provide support for the lower mold 2, and also includes: an upper mold 3 is arranged above the lower mold 2, and a second cavity 5 is opened on the lower end surface of the upper mold 3, a first cavity 4 is opened on the upper end surface of the lower mold 2, and a support mechanism is arranged on the outer sides of the lower mold 2 and the upper mold 3, specifically as follows Figure 1 As shown in , the support mechanism includes a column 6 fixedly mounted on the upper end of the bottom plate 1, and a top plate 7 is fixedly mounted on the upper end of the column 6, and the support mechanism also includes a hydraulic telescopic rod 8 fixedly mounted on the lower end of the top plate 7, and the hydraulic telescopic rod 8 is fixedly connected to the upper end of the upper mold 3, and the upper end of the upper mold 3 is fixedly connected to the injection port 9, and the lifting of the upper mold 3 is controlled by the hydraulic telescopic rod 8;

[0027] Specific as Figure 1 and Figure 2 As shown in the figure, the lower end of the upper mold 3 is provided with a connection hole 10, the interior of the lower mold 2 is connected with a mounting rod 11, and the upper end of the mounting rod 11 is connected with a guide mechanism, combined with Figure 2 and Figure 4 As shown in the figure, the guide mechanism includes a guide rod 12 fixedly connected to the upper end of the mounting rod 11, and an annular groove 17 is formed on the outer surface of the guide rod 12. The guide mechanism also includes a guide block 13 fixedly connected to the upper end of the guide rod 12, and an oil filling hole 14 is formed inside the guide rod 12 and the guide block 13, and the oil filling hole 14 is connected to the annular groove 17. Oil can be filled into the guide rod 12 and the guide block 13 through the oil filling hole 14, and then the oil flows into the annular groove 17.

[0028] Specific as Figure 1 and Figure 2 As shown in , the lower mold 2 is provided with a mounting hole 15 inside, and the lower end of the mounting hole 15 is connected with a connecting hole 16. Since the connecting hole 10 and the guide mechanism are arranged one by one in the upper and lower parts, when the precision plastic part plastic mold is used, the upper mold 3 is firstly driven to move downward and close the mold with the lower mold 2 by extending the hydraulic telescopic rod 8, and the guide block 13 and the guide rod 12 are inserted into the connecting hole 10 to guide and limit the upper mold 3. At the same time, the oil seeping out of the annular groove 17 can lubricate the connecting hole 10, thereby reducing the friction between the guide rod 12 and the connecting hole 10;

[0029] Combination Figure 2 and Figure 3 As shown in , a connecting block 18 is fixedly connected to the lower end of the mounting rod 11, and a mounting block 19 is fixedly connected to the lower end of the connecting block 18, and the connecting block 18 is threadedly connected to the lower mold 2 through the connecting hole 16, and the mounting block 19 is arranged below the lower mold 2. At the same time, the mounting rod 11 is slidably connected to the lower mold 2 through the mounting hole 15. By rotating the mounting block 19 counterclockwise to move the connecting block 18 downward inside the connecting hole 16, the mounting rod 11 can be pulled out from the lower mold 2, and then the guide mechanism can be disassembled. This is the method of using the plastic mold for precision plastic parts.

[0030] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic mold for precision plastic parts, comprising a base plate (1) mounted below a lower mold (2), wherein the base plate (1) is used to provide support for the lower mold (2), characterized in that: Also included are: An upper mold (3) is arranged above the lower mold (2), and a second mold cavity (5) is provided on the lower end surface of the upper mold (3), a first mold cavity (4) is provided on the upper end surface of the lower mold (2), and support mechanisms are provided on the outer sides of the lower mold (2) and the upper mold (3), an injection port (9) is fixedly connected to the upper end of the upper mold (3), and a connecting hole (10) is provided on the lower end of the upper mold (3); A mounting rod (11) is connected to the interior of the lower mold (2); the upper end of the mounting rod (11) is connected to a guide mechanism, and the lower end of the mounting rod (11) is fixedly connected to a connecting block (18); a mounting hole (15) is provided inside the lower mold (2), and the lower end of the mounting hole (15) is connected to a connecting hole (16).

2. A precision plastic parts plastic mold according to claim 1, characterized in that: The support mechanism comprises a column (6) fixedly mounted on the upper end of the bottom plate (1), and a top plate (7) is fixedly mounted on the upper end of the column (6).

3. A precision plastic parts plastic mold according to claim 2, characterized in that: The support mechanism also includes a hydraulic telescopic rod (8) fixedly mounted on the lower end of the top plate (7), and the hydraulic telescopic rod (8) is fixedly connected to the upper end of the upper mold (3).

4. The precision plastic parts plastic mold according to claim 1, characterized in that: The guide mechanism comprises a guide rod (12) fixedly connected to the upper end of the mounting rod (11), and an annular groove (17) is provided on the outer surface of the guide rod (12). The mounting rod (11) is slidably connected to the lower mold (2) through the mounting hole (15).

5. A precision plastic part plastic mold according to claim 4, characterized in that: The guide mechanism also includes a guide block (13) fixedly connected to the upper end of the guide rod (12), and an oil injection hole (14) is provided inside the guide rod (12) and the guide block (13), and the oil injection hole (14) is connected to the annular groove (17).

6. The precision plastic parts plastic mold according to claim 1, characterized in that: The connection holes (10) are arranged one by one with the guide mechanism in upper and lower correspondence.

7. The precision plastic parts plastic mold according to claim 1, characterized in that: The lower end of the connection block (18) is fixedly connected to a mounting block (19), and the mounting block (19) is arranged below the lower mold (2).

8. The precision plastic parts plastic mold according to claim 7, characterized in that: The connecting block (18) is threadedly connected to the lower die (2) via a connecting hole (16), and the connecting hole (16) is provided on the lower end surface of the lower die (2).

Images