Mold core structure of plastic bottom shell forming mold

Abstract

The utility model discloses a mold core structure of a plastic bottom shell forming mold, which comprises an upper mold plate and a lower mold plate, the lower mold plate is positioned on the lower side of the upper mold plate, the lower mold plate and the upper mold plate are in guide fit, a mounting groove is formed in the lower mold plate, a rear mold core is mounted in the mounting groove, and the rear mold core is positioned in the mounting groove. A guide block used for guiding the rear mold core is arranged at the bottom of the mounting groove, the rear mold core is in sliding fit with the guide block, the right end of the lower mold plate is connected with a hydraulic cylinder through a bolt, and the lower mold plate and the rear mold core are detachably connected, so that the rear mold core is convenient to replace; the rear mold core is installed in the installation groove, the hydraulic cylinder drives the push plate to move leftwards, the push plate extrudes the rear mold core, the rear mold core can be stabilized at the bottom of the installation groove to be fixed in cooperation with the inclined structural design of the outer wall of the rear mold core, and when the rear mold core is disassembled, the hydraulic cylinder drives the push plate to move rightwards, and then the rear mold core can be disassembled.

Description

Technical Field

[0001] This utility model relates to the field of mold forming technology, specifically to a mold core structure for a plastic bottom shell molding mold. Background Technology

[0002] In recent years, with the rapid development of the plastics industry and the continuous improvement of general and engineering plastics in terms of strength and precision, the application scope of plastic products has been expanding, including household appliances, instruments and meters, building materials, automobile industry, daily hardware and many other fields. The proportion of plastic products is increasing rapidly.

[0003] Molds can be used to process and shape plastic base shells. After long-term use, the mold core of the plastic base shell molding mold will wear down, affecting the processing quality of the plastic base shell. The mold core is difficult to replace. Therefore, this utility model provides a mold core structure for a plastic base shell molding mold. Utility Model Content

[0004] The purpose of this utility model is to provide a mold core structure for a plastic bottom shell molding mold, which has the advantage of easy mold core replacement and solves the problem that the mold core of existing plastic bottom shell molding molds is difficult to replace.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a core structure for a plastic bottom shell molding die, comprising an upper template and a lower template, wherein the lower template is located below the upper template and the lower template and the upper template are guided together; an installation groove is provided in the lower template, and a rear mold core is installed in the installation groove; a guide block for guiding the rear mold core is provided at the bottom of the installation groove; the rear mold core and the guide block are slidably engaged; a hydraulic cylinder is bolted to the right end of the lower template; a push block is connected to the left side of the telescopic end of the hydraulic cylinder; the push block and the installation groove are slidably engaged; a groove is provided in the push block; a sliding block is slidably connected in the groove; a spring is fixedly connected between the right end of the sliding block and the right end of the groove; a push plate is connected to the left end of the sliding block; the push plate is located to the left of the push block; the left end of the installation groove is tilted to the right; the left end of the rear mold core is adapted to the left end of the installation groove; the right end of the rear mold core is tilted to the left; and the left side of the push plate is adapted to the right end of the rear mold core.

[0006] Preferably, a sliding groove is provided at the bottom right end of the mounting groove, and a slider is slidably connected in the sliding groove. The slider is fixed to the bottom of the push block by bolts.

[0007] Preferably, a front mold core is installed in the upper mold plate, and after the upper mold plate and the lower mold plate are closed, an injection molding cavity for forming a plastic bottom shell is formed between the front mold core and the rear mold core.

[0008] Preferably, a push rod is connected to the bottom of the injection cavity, and the push rod passes through the lower mold plate and extends to the lower side of the lower mold plate.

[0009] Preferably, a panel is bolted to the upper side of the upper template, a positioning ring is provided on the panel, and a sprue sleeve is provided inside the positioning ring, the sprue sleeve passing through the positioning ring and the panel.

[0010] Preferably, the left end of the push plate and the right end of the rear mold core are in planar contact.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. In this utility model, the lower template and the rear mold core adopt a detachable connection structure design, which facilitates the replacement of the rear mold core. When installing the rear mold core, the rear mold core is inserted into the mounting groove, and the push plate is moved to the left by the hydraulic cylinder. The push plate presses the rear mold core. With the inclined structure design of the outer wall of the rear mold core, the rear mold core can be stably fixed at the bottom of the mounting groove. When disassembling the rear mold core, the hydraulic cylinder drives the push plate to move to the right, and the rear mold core can be disassembled.

[0013] 2. The push block is connected to the push plate via a spring. When the push plate initially presses the rear mold core, the push plate and the rear mold core are in elastic contact, which protects the rear mold core. When the push plate and the push block come into contact, the elastic contact is removed, which can stably fix the rear mold core. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the mating structure of the lower template and the rear mold core of this utility model;

[0016] Figure 3 This utility model Figure 2 A schematic diagram of the cross-sectional structure;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the lower template of this utility model.

[0018] The reference numerals and names in the figure are as follows: 1. Upper template; 2. Lower template; 3. Panel; 4. Mounting groove; 5. Rear mold core; 6. Injection cavity; 7. Hydraulic cylinder; 8. Push block; 9. Guide block; 10. Push plate; 11. Spring; 12. Slider; 13. Groove; 14. Sliding block; 15. Slide groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0022] Please see Figures 1 to 4This utility model provides an embodiment of a mold core structure for a plastic bottom shell molding die, including an upper mold plate 1 and a lower mold plate 2. The lower mold plate 2 is located below the upper mold plate 1, and the lower mold plate 2 and the upper mold plate 1 are guided together. An installation groove 4 is provided in the lower mold plate 2, and a rear mold core 5 is installed in the installation groove 4. A guide block 9 is provided at the bottom of the installation groove 4 to guide the rear mold core 5, so that the rear mold core 5 can only move left and right. The rear mold core 5 and the guide block 9 are slidably engaged. A hydraulic cylinder 7 is bolted to the right end of the lower mold plate 2. A push block 8 is connected to the left side of the telescopic end of the hydraulic cylinder 7. The push block 8 and the installation groove 4 are slidably engaged, improving the movement of the push block 8. To ensure stability, a groove 13 is provided in the push block 8, and a sliding block 14 is slidably connected in the groove 13. A spring 11 is fixedly connected between the right end of the sliding block 14 and the right end of the groove 13. The connection difficulty of the spring 11 can be reduced by opening slots on the side of the push block 8. A push plate 10 is connected to the left end of the sliding block 14. The push plate 10 is located on the left side of the push block 8. The left end of the mounting groove 4 is tilted to the right. The left end of the rear mold core 5 is adapted to the left end of the mounting groove 4. The right end of the rear mold core 5 is tilted to the left. The left side of the push plate 10 is adapted to the right end of the rear mold core 5. Thus, when the push plate 10 presses the rear mold core 5, it can stably fix the rear mold core 5 at the bottom of the mounting groove 4.

[0023] A sliding groove 15 is provided at the bottom right end of the mounting groove 4. A slider 12 is slidably connected in the sliding groove 15. The slider 12 is fixed to the bottom of the push block 8 by bolts.

[0024] The upper mold plate 1 is equipped with a front mold core. After the upper mold plate 1 and the lower mold plate 2 are closed, an injection cavity 6 with a molded plastic bottom shell is formed between the front mold core and the rear mold core 5.

[0025] A push rod is connected to the bottom of the injection cavity 6. The push rod passes through the lower mold plate 2 and extends to the lower side of the lower mold plate 2.

[0026] A panel 3 is bolted to the upper side of the upper template 1. A positioning ring is provided on the panel 3. A sprue sleeve is provided inside the positioning ring. The sprue sleeve passes through the positioning ring and the panel 3.

[0027] The left end of the push plate 10 and the right end of the rear mold core 5 are in planar contact, which improves the uniformity of pressure and enables the push plate 10 to stably fix the rear mold core 5.

[0028] Working principle: The lower template 2 and the rear mold core 5 adopt a detachable connection structure design, which facilitates the replacement of the rear mold core 5. When installing the rear mold core 5, the rear mold core 5 is inserted into the mounting groove 4. The hydraulic cylinder 7 drives the push plate 10 to move to the left. The push plate 10 squeezes the rear mold core 5. With the inclined structure design of the outer wall of the rear mold core 5, the rear mold core 5 can be stably fixed at the bottom of the mounting groove 4. When removing the rear mold core 5, the hydraulic cylinder 7 drives the push plate 10 to move to the right, and the rear mold core 5 can be removed. The push block 8 is connected to the push plate 10 through the spring 11. So when the push plate 10 initially squeezes the rear mold core 5, the push plate 10 and the rear mold core 5 are in elastic contact, which protects the rear mold core 5. When the push plate 10 and the push block 8 come into contact, the elastic contact is removed, which can stably fix the rear mold core 5.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A core structure for a plastic bottom shell molding die, comprising an upper template (1) and a lower template (2), wherein the lower template (2) is located below the upper template (1), and the lower template (2) and the upper template (1) are guided and fitted together, characterized in that: The lower template (2) has an installation groove (4) in which a rear mold core (5) is installed. A guide block (9) for guiding the rear mold core (5) is provided at the bottom of the installation groove (4). The rear mold core (5) and the guide block (9) are slidably engaged. A hydraulic cylinder (7) is bolted to the right end of the lower template (2). A push block (8) is connected to the left side of the telescopic end of the hydraulic cylinder (7). The push block (8) and the installation groove (4) are slidably engaged. A groove (13) is provided in the push block (8). A sliding block (14) is slidably connected in the groove (13). A spring (11) is fixedly connected between the right end of the sliding block (14) and the right end of the groove (13). A push plate (10) is connected to the left end of the sliding block (14). The push plate (10) is located to the left of the push block (8). The left end of the mounting groove (4) is tilted to the right. The left end of the rear mold core (5) is adapted to the left end of the mounting groove (4). The right end of the rear mold core (5) is tilted to the left. The left side of the push plate (10) is adapted to the right end of the rear mold core (5).

2. The core structure of a plastic bottom shell molding die according to claim 1, characterized in that: The mounting groove (4) has a sliding groove (15) at the bottom right end, and a slider (12) is slidably connected in the sliding groove (15). The slider (12) is fixed to the bottom of the push block (8) by bolts.

3. The core structure of a plastic bottom shell molding die according to claim 1, characterized in that: The upper template (1) is equipped with a front mold core. After the upper template (1) and the lower template (2) are closed, an injection cavity (6) for forming a plastic bottom shell is formed between the front mold core and the rear mold core (5).

4. The core structure of a plastic bottom shell molding die according to claim 3, characterized in that: The bottom of the injection cavity (6) is connected to a push rod, which passes through the lower template (2) and extends to the lower side of the lower template (2).

5. The core structure of a plastic bottom shell molding die according to claim 1, characterized in that: The upper template (1) is connected to a panel (3) by bolts. A positioning ring is provided on the panel (3). A sprue sleeve is provided inside the positioning ring. The sprue sleeve passes through the positioning ring and the panel (3).

6. The core structure of a plastic bottom shell molding die according to claim 1, characterized in that: The left end of the push plate (10) and the right end of the rear mold core (5) are in planar contact.

Images