Precise plastic mold

Abstract

The utility model belongs to the technical field of molds, and discloses a precise plastic mold which comprises a bottom plate and a movable plate, a lower mold base is installed on the bottom plate, a mold cavity is formed in the upper end face of the lower mold base, a cooling cavity is formed in the lower mold base and located on the periphery of the mold cavity, and the movable plate is arranged above the lower mold base. A die pressing block is detachably installed on the lower end face of the movable plate, and the movable plate can be close to or away from the lower die base through a driving piece. The detachable pressing die block can be conveniently replaced into different types according to the configuration of a forming part, when the pressing die block is installed, the inserting strip is inserted along the inserting groove, the pressing die block can be supported, then the fastening screw is screwed on for limiting, installation is convenient and fast, in addition, when the inserting strip is inserted, the inserting strip can be lifted up firstly and then placed down, and the pressing die block is convenient to install. The limiting protruding block is embedded into the limiting groove, the position of the inserting strip in the inserting groove can be limited, alignment is convenient, and follow-up fast screwing of the fastening screw is facilitated.

Description

Technical Field

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

[0002] Plastic mold is one of many molds. It is a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low foaming molding. The mold can process plastic parts of different shapes and sizes.

[0003] In the patent application number 202221541670.0, a precision plastic mold is disclosed. The disclosed plastic mold describes that "a module is fixedly connected to the bottom of the mounting plate". The fixed connection makes the downward pressure module on each mold unique, thereby making the surface configuration of the molded part single. For compression molded parts that require different surface configurations, different plastic molds are required, which is a waste of resources. Based on this, a precision plastic mold is proposed here to realize the replaceable downward pressure module. It is very important. Utility Model Content

[0004] The purpose of the utility model is to provide a precision plastic mold to solve the problem that the existing fixedly connected pressing module proposed in the above background technology makes the surface configuration of the molded part single, and different plastic molds need to be equipped for compression molded parts with different surface configurations, which wastes resources.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a precision plastic mold, comprising:

[0006] A bottom plate, on which a lower die base is mounted, and an upper end surface of the lower die base is provided with a die cavity;

[0007] A movable plate is arranged above the lower die seat, a pressing module is detachably mounted on the lower end surface of the movable plate, and the movable plate can be moved closer to or away from the lower die seat through a driving member.

[0008] The driving member comprises:

[0009] Two vertical plates, the two vertical plates are symmetrically fixed to the two ends of the upper end surface of the bottom plate;

[0010] A top plate, the top plate being mounted on the top of the vertical plate;

[0011] A hydraulic cylinder is installed on the top plate, and the bottom end of the hydraulic cylinder is connected to the upper end surface of the movable plate.

[0012] The upper ends of both side walls of the compression module are connected with inserting strips, the lower end surface of the movable plate is provided with a slot, and the upper end surface of the movable plate is screwed with a fastening screw that can penetrate the inserting strips.

[0013] A limiting protrusion is fixed at the bottom of the slot, a limiting groove is arranged on the lower end surface of the inserting strip, and the limiting protrusion is inserted and matched in the limiting groove.

[0014] Both ends of the movable plate are connected with sliding blocks, and opposite sides of the two vertical plates are provided with sliding grooves, and the sliding blocks are slidably matched with the sliding grooves.

[0015] A cooling cavity is provided inside the lower mold base and outside the mold cavity, a liquid inlet is provided at the lower end of the outer wall of the lower mold base, and a liquid discharge port is provided at the upper end of the outer wall of the lower mold base, and both the liquid inlet and the liquid discharge port are connected to the cooling cavity.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The detachable compression module of the utility model is easy to replace with different ones according to the configuration of the molded part. When installing the compression module, the insert strip is inserted into the slot to support the compression module, and then the fastening screw is screwed on to limit the position. The installation is convenient and quick.

[0018] (2) When inserting the insertion strip, the insertion strip can be first lifted up and then lowered so that the limiting protrusion is embedded in the limiting groove, thereby limiting the position of the insertion strip in the slot, facilitating alignment and facilitating the rapid tightening of the subsequent fastening screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a top view of the vertical plate of the utility model;

[0021] Figure 3 It is a cross-sectional view of the lower die base of the utility model;

[0022] Figure 4 for Figure 1 A magnified view of part A in FIG.

[0023] In the figure: 1. bottom plate; 2. lower die base; 3. vertical plate; 4. top plate; 5. hydraulic cylinder; 6. movable plate; 7. slider; 8. pressing die block; 9. slide groove; 10. die cavity; 11. cooling cavity; 12. liquid inlet; 13. liquid outlet; 14. slot; 15. insert; 16. limiting protrusion; 17. limiting groove; 18. fastening screw. DETAILED DESCRIPTION

[0024] 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.

[0025] Figure 1 The structural schematic diagram of the utility model, as shown in the figure, the precision plastic mold includes a base plate 1 and a movable plate 6, a lower mold base 2 is installed on the base plate 1, a mold cavity 10 is provided on the upper end surface of the lower mold base 2, the movable plate 6 is arranged above the lower mold base 2, and a pressing module 8 is detachably installed on the lower end surface of the movable plate 6. The detachable pressing module 8 is convenient for replacing with different ones according to the configuration of the molded part, and the movable plate 6 can be close to or away from the lower mold base 2 through the driving member. When the driving member drives the movable plate 6 to move downward, the pressing module 8 can enter the mold cavity 10, thereby realizing compression molding.

[0026] In a specific embodiment of the present invention, refer to Figure 1 As shown, the drive member includes:

[0027] Two vertical plates 3, the two vertical plates 3 are symmetrically fixed to the two ends of the upper end surface of the bottom plate 1;

[0028] A top plate 4 is installed on the top of the vertical plate 3;

[0029] The hydraulic cylinder 5 is installed on the top plate 4, and the bottom end of the hydraulic cylinder 5 is connected to the upper end surface of the movable plate 6.

[0030] Through the above, the hydraulic cylinder 5 on the top plate 4 is started, and the hydraulic movement of the hydraulic cylinder 5 can drive the movable plate 6 to move up and down, thereby realizing the upward movement or downward pressing operation of the pressing module 8.

[0031] Further, see Figure 1-Figure 2 As shown, both ends of the movable plate 6 are connected with sliders 7 , and opposite sides of the two vertical plates 3 are provided with slide grooves 9 , and the sliders 7 are slidably matched in the slide grooves 9 .

[0032] Specifically, by using the slider 7 to slide along the linear direction of the slide groove 9 , the stability of the upward and downward movement of the movable plate 6 can be improved, thereby ensuring that the pressing die block 8 can accurately enter the mold cavity 10 .

[0033] See also Figure 1 and Figure 4 As shown, the upper ends of both side walls of the pressing module 8 are connected with inserting strips 15 , the lower end surface of the movable plate 6 is provided with a slot 14 , and the upper end surface of the movable plate 6 is screwed with a fastening screw 18 that can penetrate the inserting strips 15 .

[0034] As described above, when installing the compression module 8, the inserting strip 15 is inserted along the slot 14 to support the compression module 8, and then the fastening screw 18 is screwed on to limit the position. The installation is convenient and fast, which is conducive to subsequent replacement.

[0035] Second, see Figure 4 As shown, a limiting protrusion 16 is fixed at the bottom of the slot 14 , a limiting groove 17 is formed on the lower end surface of the inserting strip 15 , and the limiting protrusion 16 is inserted and matched in the limiting groove 17 .

[0036] As mentioned above, the width of the slot 14 is greater than the thickness of the inserting strip 15. When inserting the inserting strip 15, the inserting strip 15 can be lifted up first and then lowered so that the limiting protrusion 16 is embedded in the limiting groove 17, thereby limiting the position of the inserting strip 15 in the slot 14, facilitating alignment and facilitating the subsequent rapid tightening of the fastening screw 18.

[0037] Also, see Figure 3 As shown, a cooling cavity 11 is provided inside the lower mold base 2 and outside the mold cavity 10 , a liquid inlet 12 is provided at the lower end of the outer wall of the lower mold base 2 , and a liquid discharge port 13 is provided at the upper end of the outer wall of the lower mold base 2 , and both the liquid inlet 12 and the liquid discharge port 13 are connected to the cooling cavity 11 .

[0038] Through the above technical solution:

[0039] After the heated and softened material is compression molded, cooling water can be introduced from the lower liquid inlet 12 and discharged from the upper liquid outlet 13, so that the cooling water fills the cooling cavity 11, which can effectively accelerate the cooling speed of the compression molded part after molding and improve the processing efficiency.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision plastic mold, Features: include: A bottom plate (1), a lower die base (2) being mounted on the bottom plate (1), and a die cavity (10) being provided on the upper end surface of the lower die base (2); A movable plate (6) is arranged above the lower die seat (2), a pressing block (8) is detachably mounted on the lower end surface of the movable plate (6), and the movable plate (6) can be moved closer to or farther from the lower die seat (2) through a driving member. The upper ends of both side walls of the compression module (8) are connected with insert strips (15), the lower end surface of the movable plate (6) is provided with a slot (14), and the upper end surface of the movable plate (6) is screwed with a fastening screw (18) that can penetrate the insert strip (15). A limiting protrusion (16) is fixed at the bottom of the slot (14), a limiting groove (17) is provided on the lower end surface of the inserting strip (15), and the limiting protrusion (16) is inserted and matched in the limiting groove (17).

2. A precision plastic mold according to claim 1, Features: The driving member comprises: Two vertical plates (3), the two vertical plates (3) being symmetrically fixed to two ends of the upper end surface of the bottom plate (1); A top plate (4), the top plate (4) being mounted on the top of the vertical plate (3); A hydraulic cylinder (5) is installed on the top plate (4), and the bottom end of the hydraulic cylinder (5) is connected to the upper end surface of the movable plate (6).

3. A precision plastic mold according to claim 2, Features: Both ends of the movable plate (6) are connected with sliding blocks (7), and opposite sides of the two vertical plates (3) are provided with sliding grooves (9), and the sliding blocks (7) are slidably matched with the sliding grooves (9).

4. A precision plastic mold according to claim 1, Features: A cooling cavity (11) is provided inside the lower mold base (2) and outside the mold cavity (10); a liquid inlet (12) is provided at the lower end of the outer wall of the lower mold base (2); and a liquid discharge port (13) is provided at the upper end of the outer wall of the lower mold base (2); the liquid inlet (12) and the liquid discharge port (13) are both connected to the cooling cavity (11).

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