Double-station split type injection mold

Abstract

The utility model relates to a double-station split type injection mold. The double-station split type injection mold comprises an upper mold core, a lower mold core, an upper mold base and a lower mold base, opposite surfaces of the upper die holder and the lower die holder are respectively provided with two fixing grooves for fixing the upper die core and the lower die core; movable grooves directly communicating with the fixing grooves are formed in the positions, located on the left side and the right side of the lower mold core, of the upper surface of the lower mold base, and electric heating pieces are embedded in the side walls, facing the movable grooves, of the lower mold core; a sliding base is arranged in the movable groove in a left-right sliding mode, and an avoiding groove corresponding to the electric heating piece is formed in the sliding base. An inner cavity forming column extending into the upper surface of the lower mold core is arranged on the sliding seat; injection molding grooves corresponding to the inner cavity forming column are formed in the opposite surfaces of the upper mold core and the lower mold core; the upper die base is further provided with an inclined guide column pushing the sliding base to slide left and right, and the sliding base is provided with an inclined guide hole corresponding to the inclined guide column. In the actual maintenance process, the heating piece can be directly maintained and replaced through the movable groove after the mold is opened, operation is easy and convenient, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a dual-station split injection mold. Background Technology

[0002] Injection molds are tools used to produce plastic products. They consist of a moving mold and a fixed mold. During injection molding, the moving and fixed molds close to form the injection system and cavity. When the mold opens, the moving and fixed molds separate to remove the plastic product. An injection molding machine uses the thrust of a screw to inject molten plastic into a closed mold cavity. After solidification, the product is obtained. Injection molding is a cyclical process. A dual-station vertical injection molding machine can immediately begin injection molding another product after the first one has been completed, thus improving the machine's efficiency.

[0003] Currently, with technological advancements, many product casings are complex curved shapes, especially those with curved outer surfaces and internal round holes. These products can only be molded using a horizontal split-mold design. During injection molding, maintaining a constant temperature in the lower mold core requires an internal electric heating element. However, for these horizontally split injection molded products, existing molds cannot adequately accommodate the ease of maintenance for this heating element. Maintenance or replacement of the heating element necessitates complete disassembly of the lower mold core, significantly extending maintenance and replacement time and ultimately impacting production. Therefore, it is necessary to design a new mold to meet daily production needs. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a dual-station split injection mold that can effectively solve the aforementioned problems.

[0005] To achieve the above requirements, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A dual-station split injection mold is provided, comprising an upper mold core, a lower mold core, an upper mold base, and a lower mold base; the upper mold base and the lower mold base are respectively provided with two fixing grooves on their opposite surfaces to fix the upper mold core and the lower mold core; the upper surface of the lower mold base is provided with movable grooves on both the left and right sides of the lower mold core, which are directly connected to the fixing grooves; an electric heating element is embedded in the side wall of the lower mold core facing the movable groove; a slide block is slidably disposed in the movable groove, and the slide block is provided with a relief groove corresponding to the electric heating element; the slide block is provided with an inner cavity forming post extending into the upper surface of the lower mold core, and the opposite surfaces of the upper mold core and the lower mold core are provided with injection molding grooves corresponding to the inner cavity forming post; the upper mold base is also provided with an inclined guide post for pushing the slide block to slide left and right, and the slide block is provided with an inclined guide hole corresponding to the inclined guide post.

[0007] The dual-station split injection mold of this utility model has two upper mold cores and two lower mold cores, and the two lower mold cores are arranged adjacent to each other in the front-back direction.

[0008] The dual-station split injection mold of this utility model has a slide block that is elongated and arranged along the front-to-back direction, and multiple inner cavity forming columns that are evenly arranged on the slide block along the front-to-back direction.

[0009] The dual-station split injection mold of this utility model has a fixing hole on the side wall of the slide away from the lower mold core, corresponding to the inner cavity forming column. The side wall of the inner cavity forming column away from the lower mold core has an annular protrusion. The side wall of the slide has an annular positioning groove that matches the annular protrusion.

[0010] The dual-station split injection mold of this utility model has a lower inclined surface on the upper part of the side wall of the slide away from the lower mold core, which is inclined toward the lower mold core. The fixing hole is provided on the lower inclined surface, and a sealing plate is provided on the lower inclined surface to cover the fixing hole.

[0011] The dual-station split injection mold of this utility model has positioning seats on both the left and right sides of the upper mold core on the upper mold base, and the inclined guide post is located between the two positioning seats; the side wall of the positioning seat facing the upper mold core has an upper inclined surface that is adapted to the lower inclined surface, and when the mold is closed, the upper inclined surface and the lower inclined surface fit together and abut against each other.

[0012] The dual-station split injection mold of this utility model has guide rails on the front and rear side walls of the movable groove to guide the left and right movement of the slide. The side wall of the slide has a limiting platform extending into the guide rail. When assembled, the upper surface of the limiting platform slides and fits against the lower surface of the guide rail.

[0013] The dual-station split injection mold of this utility model has an movable groove at one end opposite to the lower mold core that penetrates the side wall of the lower mold base. A stop protrusion is provided on the bottom surface of the movable groove at one end away from the lower mold core. A guide limiting groove is provided on the side wall of the slide at one end opposite to the lower mold core, corresponding to the stop protrusion. The lower end of the guide limiting groove penetrates the bottom surface of the slide.

[0014] The dual-station split injection mold of this utility model has two stop protrusions that are opposite to each other.

[0015] The dual-station split injection mold of this utility model has an inclined guide hole that penetrates the bottom surface of the slide block, and a vertical positioning groove is provided on the bottom surface of the movable groove for the lower end of the inclined guide post to be inserted.

[0016] The beneficial effects of this utility model are as follows: In actual maintenance, the heating element can be directly maintained and replaced through the movable slot after the mold is opened. The operation is simple and convenient, which greatly improves the production efficiency. Moreover, the clearance slot on the movable seat can also provide a position for the connector of the electric heating element, which can facilitate the installation of the electric heating element without affecting the sealing effect of the movable seat on the injection molding groove. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded bird's-eye view of the overall structure of this utility model.

[0019] Figure 2 yes Figure 1 Enlarged view of a local structure.

[0020] Figure 3 This is another perspective view of the slide of this utility model.

[0021] Figure 4 This is a bottom view of the upper mold base of this utility model. Detailed Implementation

[0022] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0025] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The preferred embodiment of this utility model is a dual-station split injection mold, such as... Figure 1-4As shown, the system includes an upper mold core 10, a lower mold core 20, an upper mold base 30, and a lower mold base 40. Two fixing grooves 50 are respectively provided on the opposite surfaces of the upper mold base 30 and the lower mold base 40 to fix the upper mold core 10 and the lower mold core 20. Movable grooves 60, directly communicating with the fixing grooves 50, are provided on the upper surface of the lower mold base 40 on both the left and right sides of the lower mold core 20. The front and rear widths of the movable grooves 60 and the fixing grooves 50 are the same to facilitate synchronous processing. Multiple electric heating elements 70, specifically electric heating rods, are embedded in the side wall of the lower mold core 20 facing the movable grooves 60. Further, a slide block 80 is slidably arranged left and right within the movable grooves 60. Specifically, the upper end of the slide block 80 is higher than the upper surface of the lower mold core 20, and a corresponding clearance recess 90 is provided on the upper mold base 30 to avoid the upper end of the slide block 80. Further, the slide block 80... The upper mold base 30 is provided with a relief groove 100 corresponding to the electric heating element 70; the slide base 80 is provided with an inner cavity forming pillar 110 extending into the upper surface of the lower mold core 20. The upper mold core 10 and the lower mold core 20 are provided with injection molding grooves 120 corresponding to the inner cavity forming pillar 110 on their opposite surfaces. When the upper and lower injection molding grooves 120 are closed, an injection cavity is formed. The inner diameter of the injection cavity is larger than the diameter of the end of the inner cavity forming pillar 110 away from the movable seat. The upper mold base 30 is also provided with an inclined guide pillar 130 that pushes the slide base 80 to slide left and right. The slide base 80 is provided with an inclined guide hole 140 corresponding to the inclined guide pillar 130. Through the cooperation of the inclined guide hole 140 and the inclined guide pillar 130, the slide base 80 can be pushed in the direction away from or close to the injection molding groove 120 when the upper mold base 30 is opened or closed, so as to realize the automatic opening and closing of the inner cavity forming pillar 110.

[0028] In actual maintenance, the heating element can be directly maintained or replaced through the movable slot 60 after the mold is opened. The operation is simple and convenient, which greatly improves production efficiency. Moreover, the clearance slot 100 on the movable seat can also provide a position for the connector of the electric heating element 70, which can facilitate the installation of the electric heating element 70 without affecting the sealing effect of the movable seat on the injection molding groove 120.

[0029] In this embodiment, there are two upper mold cores 10 and two lower mold cores 20. The two lower mold cores 20 are arranged adjacent to each other in the front-back direction. The slide block 80 is long and strip-shaped and is arranged in the front-back direction. Multiple inner cavity forming pillars 110 are provided and are evenly arranged on the slide block 80 in the front-back direction, thereby forming two injection stations that are opposite each other in front and back to improve injection efficiency.

[0030] In this embodiment, a fixing hole 150 is provided on the side wall of the slide block 80 opposite to the lower mold core 20, corresponding to the inner cavity forming column 110. An annular protrusion 111 is provided on the side wall of the inner cavity forming column 110 opposite to the lower mold core 20. An annular positioning groove 81 that matches the annular protrusion 111 is provided on the side wall of the slide block 80. Through the cooperation of the annular protrusion 111 and the annular positioning groove 81, the inner cavity forming column 110 can be easily disassembled and assembled.

[0031] In this embodiment, the upper part of the side wall of the slide block 80 away from the lower mold core 20 is provided with a lower inclined surface 82 that is inclined towards the lower mold core 20. The fixing hole 150 is provided on the lower inclined surface 82, and the lower inclined surface 82 is provided with a sealing plate 160 that covers the fixing hole 150. Furthermore, the upper mold base 30 is provided with positioning seats 170 on both the left and right sides of the upper mold core 10, and the inclined guide post 130 is located between the two positioning seats 170. The side wall of the positioning seat 170 facing the upper mold core 10 is provided with an upper inclined surface 171 that is adapted to the lower inclined surface 82. When the mold is closed, the upper inclined surface 171 and the lower inclined surface 82 are fitted and pressed together, and the slide block 80 is pressed against the same side wall of the lower mold core 20 and the upper mold core 10 through the positioning seat 170, so as to ensure the sealing of the upper and lower injection molding cavities by the slide block 80 and avoid leakage of glue around the inner cavity molding post 110.

[0032] In this embodiment, the front and rear side walls of the movable groove 60 are provided with guide rails 180 to guide the left and right movement of the slide block 80. The side wall of the slide block 80 is provided with a limiting platform 83 extending into the guide rail 180. When assembled in place, the upper surface of the limiting platform 83 slides and fits against the lower surface of the guide rail 180 to ensure the stability of the slide block 80 during the mold opening and closing process.

[0033] In this embodiment, the end of the movable groove 60 away from the lower mold core 20 passes through the side wall of the lower mold base 40. A stop protrusion 190 is provided on the bottom surface of the movable groove 60 away from the lower mold core 20. A guide limiting groove 84 is provided on the side wall of the slide block 80 away from the lower mold core 20 corresponding to the stop protrusion 190. The lower end of the guide limiting groove 84 passes through the bottom surface of the slide block 80. There are two stop protrusions 190, which are opposite to each other to limit the sliding of the slide block 80 and prevent the slide block 80 from opening too much and causing it to detach from the movable groove 60.

[0034] In this embodiment, the inclined guide hole 140 penetrates the bottom surface of the slide block 80, and the bottom surface of the movable groove 60 is provided with a vertical positioning groove 61 for the lower end of the inclined guide post 130 to be inserted, so as to ensure that after the mold is closed, the inclined guide post 130 presses the slide block 80 against the side wall of the lower mold core 20, further enhancing the sealing of the injection molding cavity.

[0035] Of course, the upper mold base 30 is provided with a glue injection channel 200 for injection into the injection mold groove, while the lower mold base is provided with an ejector pin module 230 for ejecting the sprue 210 and the injection molded part 220. The specific settings of the glue injection channel 200 and the ejector pin module are existing technologies in this field, and will not be described in detail in this embodiment.

[0036] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A dual-station split injection mold, characterized in that, The system includes an upper mold core, a lower mold core, an upper mold base, and a lower mold base. Two fixing grooves are respectively provided on the opposite surfaces of the upper mold base and the lower mold base to fix the upper mold core and the lower mold core. Movable grooves directly communicating with the fixing grooves are provided on the upper surface of the lower mold base on both the left and right sides of the lower mold core. An electric heating element is embedded in the side wall of the lower mold core facing the movable groove. A slide block is slidably disposed within the movable groove, and the slide block has a clearance groove corresponding to the electric heating element. An inner cavity forming post extending into the upper surface of the lower mold core is provided on the slide block, and injection molding grooves are provided on the opposite surfaces of the upper mold core and the lower mold core corresponding to the inner cavity forming post. An inclined guide post is also provided on the upper mold base to push the slide block to slide left and right, and an inclined guide hole is provided on the slide block corresponding to the inclined guide post.

2. The dual-station split injection mold according to claim 1, characterized in that, There are two upper mold cores and two lower mold cores, and the two lower mold cores are arranged adjacent to each other in the front-to-back direction.

3. The dual-station split injection mold according to claim 1, characterized in that, The slide is elongated and arranged along the front-to-back direction, and the inner cavity forming columns are provided in multiple ways and are evenly distributed on the slide along the front-to-back direction.

4. The dual-station split injection mold according to claim 3, characterized in that, The slide block has a fixing hole on the side wall opposite to the lower mold core, corresponding to the inner cavity forming column. The inner cavity forming column has an annular protrusion on the side wall opposite to the lower mold core. The slide block has an annular positioning groove on the side wall that matches the annular protrusion.

5. The dual-station split injection mold according to claim 4, characterized in that, The upper part of the side wall of the slide block away from the lower mold core is provided with a lower inclined surface that is inclined toward the lower mold core. The fixing hole is provided on the lower inclined surface, and a sealing plate is provided on the lower inclined surface to cover the fixing hole.

6. The dual-station split injection mold according to claim 5, characterized in that, The upper mold base is provided with positioning seats on both the left and right sides of the upper mold core, and the inclined guide post is located between the two positioning seats; the side wall of the positioning seat facing the upper mold core is provided with an upper inclined surface that matches the lower inclined surface. When the mold is closed, the upper inclined surface and the lower inclined surface fit together tightly.

7. The dual-station split injection mold according to claim 1, characterized in that, The front and rear side walls of the movable groove are provided with guide rails to guide the left and right movement of the slide. The side wall of the slide is provided with a limiting platform extending into the guide rail. When assembled, the upper surface of the limiting platform slides and fits against the lower surface of the guide rail.

8. The dual-station split injection mold according to claim 7, characterized in that, The end of the movable groove opposite to the lower mold core passes through the side wall of the lower mold base. A stop protrusion is provided on the bottom surface of the movable groove at the end away from the lower mold core. A guide limiting groove is provided on the side wall of the slide block at the end opposite to the lower mold core, corresponding to the stop protrusion. The lower end of the guide limiting groove passes through the bottom surface of the slide block.

9. The dual-station split injection mold according to claim 8, characterized in that, The stop protrusion has two parts, which are opposite each other.

10. The dual-station split injection mold according to claim 1, characterized in that, The inclined guide hole penetrates the bottom surface of the slide block, and the bottom surface of the movable groove is provided with a vertical positioning groove for the lower end of the inclined guide post to be inserted.

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