Double-angle core-pulling structure of a sliding block of an injection mold

Abstract

This invention provides a slider-type double-angle core-pulling structure for injection molds, including a core-pulling assembly. The assembly comprises a slanted core plate, a driving block, a slanted plate, two limiting grooves, a fixing block, a sliding groove, two limiting blocks, mounting holes, and a guide sleeve. The slanted core plate is fixedly connected to the upper surface of the driving block. During the core-pulling operation, the lifting slider moves the guide post downwards, which in turn drives the driving block. Under downward tension, the driving block moves the slanted plate. Limited by the limiting grooves, the slanted plate moves along the predetermined direction of the limiting blocks, ensuring that the slanted core plate not only moves downwards but also achieves a 45-degree slanted displacement, thus successfully pulling the core plate. Compared to existing technologies, this invention achieves slanted core-pulling during the core-pulling process, preventing demolding interference, deformation, or damage to the plastic part during demolding.

Description

Technical Field

[0001] This utility model relates to a core-pulling structure, specifically a slider double-angle core-pulling structure for injection molds, belonging to the technical field of mold core-pulling mechanisms. Background Technology

[0002] Injection molds are specialized tools used for the mass production of plastic products. Based on the designed shape and dimensions of the plastic part, they consist of two main parts: a moving mold and a fixed mold, along with core components such as the core, cavity, gating system, guiding mechanism, and ejection mechanism. The core-pulling mechanism, also called a slider, ensures smooth demolding of the product. For example, if a plastic part has a hole on its side, the product cannot be ejected if the core through that hole is not removed after mold opening. In this case, the mold structure must employ a slider structure, making the core of the hole movable. An inclined guide post cooperates with the fixed mold, and the slider moves as the mold opens or closes; this movement is called core pulling.

[0003] When existing core-pulling mechanisms are in operation, the angle of the core-pulling cannot be adjusted, which can cause damage to the product during the core-pulling process. For example, if there is a side recess or oblique hole in the inclined direction on the side of the plastic part after it is molded, ordinary single-angle core-pulling (single-direction core-pulling) often leads to demolding interference, plastic part deformation or damage. Therefore, a slider double-angle core-pulling structure for injection molds is proposed. Utility Model Content

[0004] In view of this, the present invention provides a slider double-angle core-pulling structure for injection molds to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0005] The technical solution of this utility model embodiment is implemented as follows: a slider double-angle core pulling structure for injection mold, including a core pulling assembly, the core pulling assembly including a slanted core plate, a driving block, a slanted plate, two limiting grooves, a fixing block, a sliding groove, two limiting blocks, a mounting hole and a guide sleeve; The inclined core plate is fixedly connected to the upper surface of the drive block, the inclined plate is fixedly connected to one side of the drive block, the two limiting grooves are symmetrically opened on the front and rear surfaces of the inclined plate, the sliding groove is opened on one side of the fixed block, the two limiting blocks are symmetrically fixedly connected to the inner front wall and inner rear wall of the sliding groove, the three mounting holes are equidistantly opened on the side of the drive block away from the inclined plate, and the guide sleeve is fixedly connected to the inner side wall of the mounting hole.

[0006] More preferably, the inclined plate is slidably connected to the inner wall of the groove, and the limiting block is slidably connected to the inner wall of the limiting groove.

[0007] More preferably, the contact surfaces of the inclined plate and the fixed block are both inclined surfaces.

[0008] More preferably, the shape of the inclined plate is adapted to the shape of the fixing block.

[0009] More preferably, a drive component is provided on one side of the core-pulling assembly; The drive assembly includes three guide pillars, a guide rail, a lifting slider, a drive hydraulic cylinder, and a base plate; The bottom of the driving hydraulic cylinder is mounted on the upper surface of the base plate, which is fixedly connected to the bottom end of the guide rail. The three guide columns are fixedly connected at equal intervals to one side of the lifting slider.

[0010] More preferably, the lifting slider is slidably connected to the outer wall of the guide rail.

[0011] More preferably, the end of the telescopic shaft of the driving hydraulic cylinder is mounted on the lower surface of the lifting slider.

[0012] More preferably, the guide post is located inside the guide sleeve and is slidably connected to the guide sleeve.

[0013] The present invention has the following advantages due to the adoption of the above technical solution: In the core-pulling operation of this invention, the lifting slider drives the guide post to move downwards, which in turn drives the drive block. Under the downward pulling force, the drive block drives the inclined plate. Under the limiting action of the limiting groove, the inclined plate moves along the predetermined direction of the limiting block, thereby ensuring that the inclined groove core plate not only moves downwards but also achieves a 45-degree oblique displacement, thus enabling the successful core-pulling of the inclined groove core plate. Compared with the prior art, this invention achieves oblique core-pulling of the inclined groove core plate during the core-pulling process, and there will be no demolding interference, deformation or damage of the plastic part during core-pulling and demolding.

[0014] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a structural diagram of the inclined plate of this utility model; Figure 3 This is a structural diagram of the drive block of this utility model; Figure 4 This is a structural diagram of the drive component of this utility model.

[0017] Reference numerals: 101, core-pulling assembly; 11, inclined groove core plate; 12, drive block; 13, inclined plate; 14, limiting groove; 15, fixing block; 16, sliding groove; 17, limiting block; 18, mounting hole; 19, guide sleeve; 20, guide post; 21, guide rail; 22, lifting slider; 23, drive hydraulic cylinder; 24, base plate; 301, drive assembly. Detailed Implementation

[0018] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown, this utility model embodiment provides a slider double-angle core pulling structure for injection mold, including a core pulling assembly 101. The core pulling assembly 101 includes a slanted core plate 11, a driving block 12, a slanted plate 13, two limiting grooves 14, a fixing block 15, a sliding groove 16, two limiting blocks 17, a mounting hole 18, and a guide sleeve 19. The inclined groove core plate 11 is fixedly connected to the upper surface of the drive block 12. The inclined groove core plate 11 serves as the mold core. In the injection mold, the inclined groove can be injection molded on the product through the inclined groove core plate 11. The inclined plate 13 is fixedly connected to one side of the drive block 12. Two limiting grooves 14 are symmetrically opened on the front and rear surfaces of the inclined plate 13. The sliding groove 16 is opened on one side of the fixed block 15. Two limiting blocks 17 are symmetrically fixedly connected to the inner front and inner rear walls of the sliding groove 16. The inclined plate 13 is slidably connected to the inner side wall of the sliding groove 16. The limiting blocks 17 are slidably connected to the inner side wall of the limiting groove 14. The inclination angles of the limiting groove 14, the sliding groove 16, and the inclined core plate 11 are all forty-five degrees. The contact surfaces of the inclined plate 13 and the fixed block 15 are all inclined surfaces. The shape of the inclined plate 13 is adapted to the shape of the fixed block 15. The inclination angles of the inclined plate 13 and the fixed block 15 are all forty-five degrees. In practical applications, the inclination angle can be designed according to the angle of the core plate. The precise cooperation between the limiting block 17 and the limiting groove 14 achieves the limiting and guiding function; During the core-pulling process, the drive block 12 is driven, which in turn drives the inclined plate 13. Under the limiting action of the limiting groove 14, the inclined plate 13 moves along the predetermined direction of the limiting block 17, thereby ensuring that the inclined groove core plate 11 can move in a 45-degree direction. Three mounting holes 18 are equidistantly provided on the side of the drive block 12 away from the inclined plate 13. The guide sleeve 19 is fixedly connected to the inner wall of the mounting hole 18. The position of the guide sleeve 19 can be limited by the mounting hole 18. The inside of the guide sleeve 19 is periodically coated with lubricating grease to lubricate and reduce friction.

[0021] In one embodiment, a drive assembly 301 is provided on one side of the core-pulling assembly 101; The drive assembly 301 includes three guide pillars 20, a guide rail 21, a lifting slider 22, a drive hydraulic cylinder 23, and a base plate 24; The bottom of the driving hydraulic cylinder 23 is mounted on the upper surface of the base plate 24. The base plate 24 is fixedly connected to the bottom end of the guide rail 21. Three guide posts 20 are fixedly connected at equal intervals to one side of the lifting slider 22. The lifting slider 22 is slidably connected to the outer wall of the guide rail 21. The position of the lifting slider 22 can be limited by the guide rail 21 so that the lifting slider 22 can move vertically upward or downward. The fixing block 15, guide rail 21 and base plate 24 are all fixed inside the mold; The end of the telescopic shaft of the drive hydraulic cylinder 23 is installed on the lower surface of the lifting slider 22. The guide post 20 is located inside the guide sleeve 19 and is slidably connected to the guide sleeve 19. By driving the hydraulic cylinder 23 to pull the lifting slider 22 downward, the core pulling action can be completed. During the core pulling operation, the lifting slider 22 drives the guide post 20 to move downward. The guide post 20 then drives the drive block 12. Under the action of the downward pulling force, the drive block 12, with the guidance and assistance of the slide groove 16, the limiting groove 14, the inclined plate 13 and the limiting block 17, not only moves downward, but also achieves a 45-degree oblique displacement, thereby successfully pulling the core of the inclined groove core plate 11.

[0022] When this utility model is in operation: the lifting slider 22 is pulled down by the hydraulic cylinder 23 to complete the core pulling action. During the core pulling operation, the lifting slider 22 drives the guide column 20 to move downward. The guide column 20 then drives the drive block 12. Under the downward pulling force, the drive block 12 drives the inclined plate 13. Under the limiting action of the limiting groove 14, the inclined plate 13 moves along the predetermined direction of the limiting block 17, thereby ensuring that the inclined groove core plate 11 not only moves downward, but also achieves a 45-degree oblique displacement, so that the inclined groove core plate 11 can be successfully pulled out. Compared with the prior art, this utility model achieves oblique core pulling of the inclined groove core plate 11 during the core pulling process, and there will be no demolding interference, plastic part deformation or damage during core pulling and demolding.

[0023] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A slide double angle core-pulling structure of an injection mold, comprising a core-pulling assembly (101), characterized in that: The core-pulling assembly (101) includes a sloping core plate (11), a driving block (12), a sloping plate (13), two limiting grooves (14), a fixing block (15), a sliding groove (16), two limiting blocks (17), a mounting hole (18), and a guide sleeve (19). The inclined core plate (11) is fixedly connected to the upper surface of the drive block (12), the inclined plate (13) is fixedly connected to one side of the drive block (12), the two limiting grooves (14) are symmetrically opened on the front and rear surfaces of the inclined plate (13), the sliding groove (16) is opened on one side of the fixed block (15), the two limiting blocks (17) are symmetrically fixedly connected to the inner front wall and inner rear wall of the sliding groove (16), the three mounting holes (18) are equidistantly opened on the side of the drive block (12) away from the inclined plate (13), and the guide sleeve (19) is fixedly connected to the inner side wall of the mounting hole (18).

2. The double angle core-pulling structure of the sliding block of the injection mold according to claim 1, characterized in that: The inclined plate (13) is slidably connected to the inner wall of the slide groove (16), and the limiting block (17) is slidably connected to the inner wall of the limiting groove (14).

3. The double angle core-pulling structure of the sliding block of the injection mold according to claim 2, characterized in that: The contact surfaces of the inclined plate (13) and the fixed block (15) are both inclined surfaces.

4. The double angle core-pulling structure of the sliding block of the injection mold according to claim 3, characterized in that: The shape of the inclined plate (13) is adapted to the shape of the fixed block (15).

5. The double angle core-pulling structure of the sliding block of the injection mold according to claim 1, characterized in that: A drive assembly (301) is provided on one side of the core-pulling assembly (101). The drive assembly (301) includes three guide pillars (20), a guide rail (21), a lifting slider (22), a drive hydraulic cylinder (23), and a base plate (24). The bottom of the driving hydraulic cylinder (23) is mounted on the upper surface of the base plate (24), the base plate (24) is fixedly connected to the bottom end of the guide rail (21), and the three guide columns (20) are fixedly connected at equal intervals to one side of the lifting slider (22).

6. The double angle core-pulling structure of the sliding block of the injection mold according to claim 5, characterized in that: The lifting slider (22) is slidably connected to the outer wall of the guide rail (21).

7. The double angle core-pulling structure of the sliding block of the injection mold according to claim 6, characterized in that: The end of the telescopic shaft of the driving hydraulic cylinder (23) is mounted on the lower surface of the lifting slider (22).

8. The slider double-angle core-pulling structure of an injection mold according to claim 7, characterized in that: The guide post (20) is located inside the guide sleeve (19) and is slidably connected to the guide sleeve (19).

Images