A secondary ejecting mechanism applied to an elongated ejector pin

Abstract

This utility model relates to a secondary lifting mechanism for slender ejector pins, comprising a vertically arranged support rod, a fixing block at the upper end of the support rod, and a mold core above the fixing block; a sliding hole is longitudinally provided through the fixing block, and a first ejector plate is slidably arranged in the sliding hole, with a first ejector pin vertically facing upward on the upper surface of the first ejector plate; a first through hole is provided on the mold core for the first ejector pin to pass through; a second ejector plate is longitudinally slidably arranged below the support rod, and a connecting rod is provided on the second ejector plate for longitudinal damping sliding connection with it; a second ejector pin is vertically facing upward on the second ejector plate, and a second through hole is provided on the mold core for the second ejector pin to pass through; the secondary lifting mechanism provided by this utility model divides the lifting stroke into two parts, shortens the length of the first ejector pin ejection, increases the strength of the first ejector pin, and ensures the stability and reliability of the production process.

Description

Technical Field

[0001] This utility model relates to the field of automotive mold technology, and in particular to a secondary lifting mechanism applied to slender ejector pins. Background Technology

[0002] The horn mesh of a car door panel is an important component of the automotive interior, and its production usually relies on large molds. The horn mesh holes on the car door panel are densely arranged, with the distance between the holes sometimes only about 1 millimeter. In this case, in order to accurately eject the molded part, the ejector pins must be designed to be very small to fit these dense mesh structures.

[0003] During the production process, the ejector pin needs to withstand the weight of the molded item when lifting it. However, due to its slender shape and small diameter, the ejector pin itself has low strength, leading to breakage under pressure. These problems cause the mold to lose stability and reliability during mass production, thus affecting production efficiency and product quality. Therefore, a secondary lifting structure suitable for such slender ejector pins is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a secondary lifting mechanism for slender ejector pins, which 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 secondary lifting mechanism for slender ejector pins is provided, including a vertically arranged support rod, a fixed block at the upper end of the support rod, and a mold core above the fixed block; a sliding hole is longitudinally provided on the fixed block, a first ejector plate is slidably arranged in the sliding hole, and a first ejector pin is vertically arranged on the upper surface of the first ejector plate.

[0007] The mold core has a first through hole for the first ejector pin to pass through; a second ejector plate is longitudinally slidable below the support rod, and a connecting rod is provided on the second ejector plate for longitudinal damping sliding connection; when the first ejection is lifted to the position, the connecting rod lifts the first ejector plate to abut against the mold core, and the first ejector pin extends out of the first through hole;

[0008] The second ejector plate is vertically upward with a second ejector pin, and the mold core is also provided with a second through hole for the second ejector pin to pass through; when the second ejector pin is lifted to the position, the second ejector plate slides upward along the connecting rod and lifts the second ejector pin out of the second through hole.

[0009] This utility model discloses a secondary lifting mechanism for a slender ejector pin, wherein a fixing plate is fixedly installed inside a sliding hole, the fixing plate is located below a first ejector pin plate, and the upper end of a connecting rod passes through the fixing plate and is fixedly connected to the lower surface of the first ejector pin plate.

[0010] This utility model discloses a secondary lifting mechanism for a slender ejector pin, wherein a buffer member is provided in the fixed plate to provide a buffering force in the vertical direction, and the two ends of the buffer member are fixedly connected to the lower surface of the fixed plate and the first ejector pin plate, respectively.

[0011] This utility model discloses a secondary lifting mechanism for a slender ejector pin, wherein a guide rod is vertically downwardly provided on the lower surface of the mold core, and the lower end of the guide rod is slidably connected to the first ejector pin plate.

[0012] This utility model discloses a secondary lifting mechanism for slender ejector pins, wherein the lower end of the connecting rod is provided with a first limiting block to prevent the second ejector pin plate from sliding out of the connecting rod.

[0013] This utility model discloses a secondary lifting mechanism for a slender ejector pin, wherein there are two connecting rods, which are respectively located on both sides of the support rod.

[0014] This utility model discloses a secondary lifting mechanism for a slender ejector pin, wherein the upper surface of the second ejector pin plate is provided with a second limiting block for limiting its movement; when the second lifting is completed, the upper end of the second limiting block abuts against the lower end of the fixing block, and the upper end of the second ejector pin is higher than the upper end of the first ejector pin.

[0015] This utility model discloses a secondary lifting mechanism for a slender ejector pin, wherein the secondary lifting mechanism for the slender ejector pin further includes a driving mechanism for driving the second ejector pin plate to slide longitudinally.

[0016] The beneficial effects of this utility model are as follows:

[0017] The secondary lifting mechanism provided by this utility model effectively improves the stability and reliability of the first and second ejector pins. During the first lifting process, the second ejector plate slides vertically upwards, causing the first ejector pin to extend out of the first through hole of the mold core. At this time, the first ejector plate abuts against the mold core, providing a stable support foundation for subsequent lifting. During the second lifting, the second ejector plate slides upwards along the connecting rod, lifting the second ejector pin out of the second through hole. This staged lifting method makes the force on the ejector pin more even during the lifting process, improving the stability of the ejector pin during the lifting process, ensuring the stability and reliability of the mold during mass production, greatly reducing mold maintenance costs and production downtime, and effectively improving production efficiency.

[0018] Furthermore, both the second ejector pin and the first ejector pin are located within the first and second through holes. The mold core provides protection and lateral support for the first and second ejector pins, effectively protecting their strength and ensuring the stability of the support force of the entire lifting system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present 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.

[0020] Figure 1 This is an initial state structural diagram of a secondary lifting mechanism for a slender ejector pin according to this utility model.

[0021] Figure 2 This is a structural diagram of the secondary lifting mechanism of this utility model applied to a slender ejector pin when the first lifting is completed.

[0022] Figure 3 This is a structural diagram of the secondary lifting mechanism of this utility model applied to a slender ejector pin when the second lifting is completed.

[0023] In the diagram: 1. Support rod; 10. Base plate; 2. Fixing block; 20. Sliding hole; 21. First ejector plate; 22. First ejector pin; 23. Fixing plate; 24. Buffer; 3. Mold core; 30. First through hole; 31. Second through hole; 32. Guide rod; 4. Second ejector plate; 40. Connecting rod; 41. Second ejector pin; 42. Second limiting block; 43. First limiting block; 5. Drive mechanism. Detailed Implementation

[0024] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model 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.

[0025] 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.

[0026] "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.

[0027] 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.

[0028] 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.

[0029] A preferred embodiment of this utility model provides a secondary lifting mechanism applied to a slender ejector pin, such as... Figures 1-3 As shown, it includes a vertically arranged support rod 1, a fixing block 2 located at the upper end of the support rod 1, and a mold core 3 located above the fixing block 2; a sliding hole 20 is provided through the fixing block 2 longitudinally, and a first ejector pin 22 plate 21 is slidably arranged in the sliding hole 20; a first ejector pin 22 is provided vertically upward on the upper surface of the first ejector pin 22 plate 21.

[0030] The mold core 3 is provided with a first through hole 30 for the first ejector pin 22 to pass through; a second ejector pin 41 plate 4 is provided longitudinally below the support rod 1, and a connecting rod 40 is provided on the second ejector pin 41 plate 4 for longitudinal damping sliding connection with it; when the first ejection is lifted to the position, the connecting rod 40 lifts the first ejector pin 22 plate 21 to abut against the mold core 3, and the first ejector pin 22 extends out of the first through hole 30;

[0031] The second ejector plate 41 is vertically upwardly provided with a second ejector 41, and the mold core 3 is also provided with a second through hole 31 for the second ejector 41 to pass through; when the second ejection is lifted to the position, the second ejector plate 41 slides upward along the connecting rod 40 and lifts the second ejector 41 out of the second through hole 31.

[0032] There are multiple first thimbles 22.

[0033] During operation, the second ejector plate 41 slides vertically upwards, causing the first ejector 22 to extend out of the first through hole 30 of the mold core 3. At this time, the first ejector plate 21 abuts against the mold core 3, providing a stable support base for subsequent lifting. During the second lifting, the second ejector plate 41 slides upwards along the connecting rod 40, lifting the second ejector 41 out of the second through hole 31.

[0034] In this embodiment, a fixing plate 23 is fixedly installed inside the sliding hole 20. The fixing plate 23 is located below the first ejector pin 22 plate 21. The upper end of the connecting rod 40 passes through the fixing plate 23 and is fixedly connected to the lower surface of the first ejector pin 22 plate 21.

[0035] In this embodiment, the fixed plate 23 is provided with a buffer member 24 that provides buffering force in the vertical direction. The two ends of the buffer member 24 are fixedly connected to the lower surfaces of the fixed plate 23 and the first ejector pin 22 plate 21, respectively.

[0036] The buffer element 24 is a nitrogen spring, which is vertically embedded in the fixed plate 23. The movable end of the nitrogen spring is fixedly connected to the lower surface of the first ejector plate 21. The nitrogen spring can buffer the impact force generated during the lifting process, reduce the collision between the first ejector plate 21 and the mold core 3, and improve the ejection quality and stability of the molded part.

[0037] In this embodiment, a guide rod 32 is vertically fixed downwards on the lower surface of the mold core 3, and the lower end of the guide rod 32 is slidably connected to the first ejector plate 21. The guide rod 32 guides the lifting of the first ejector plate 21, increasing the stability of the lifting of the first lifting plate.

[0038] In this embodiment, the lower end of the connecting rod 40 is provided with a first limiting block 43 to prevent the second ejector pin 41 plate 4 from sliding out of the connecting rod 40.

[0039] In this embodiment, there are two connecting rods 40, which are respectively located on both sides of the support rod, to increase the stability when the second lifting plate lifts the first lifting plate.

[0040] In this embodiment, the upper surface of the second ejector plate 41 is provided with a second limiting block 42 for limiting it; when the second ejector is lifted into place for the second time, the upper end of the second limiting block 42 abuts against the lower end of the fixing block 2, and the upper end of the second ejector 41 is higher than the upper end of the first ejector 22.

[0041] When the second ejector pin 41 plate 4 rises to the point where the upper end of the second limit block 42 abuts against the lower end of the fixed block 2, the lifting action is accurately completed, preventing the ejector pin from damaging the mold or the molded part due to excessive lifting. At the same time, it ensures that the upper end of the second ejector pin 41 is always higher than the upper end of the first ejector pin 22, realizing the orderly ejection of the molded part, improving the ejection quality and stability of the molded part, and enabling the molded part to be completely and undamagedly removed from the mold.

[0042] In this embodiment, the secondary lifting mechanism applied to the slender ejector pin also includes a driving mechanism 5 for driving the second ejector pin 41 plate 4 to slide longitudinally.

[0043] Among them, the driving mechanism 5 is an injection molding machine ejector rod; the lower end of the support rod 1 is horizontally provided with a base plate 10, the injection molding machine ejector rod is located below the base plate 10, and vertically penetrates the base plate 10 and is fixedly connected to the lower surface of the second ejector pin 41 plate 4.

[0044] 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 secondary lifting mechanism for a slender ejector pin, characterized in that, It includes a vertically arranged support rod, a fixing block located at the upper end of the support rod, and a mold core located above the fixing block; a sliding hole is longitudinally provided on the fixing block, a first ejector plate is slidably arranged in the sliding hole, and a first ejector pin is vertically arranged on the upper surface of the first ejector plate; The mold core is provided with a first through hole for the first ejector pin to pass through; a second ejector plate is longitudinally slidably provided below the support rod, and a connecting rod is provided on the second ejector plate for longitudinal damping sliding connection with it; when the first ejection is lifted to the position, the connecting rod lifts the first ejector plate to abut against the mold core, and the first ejector pin extends out of the first through hole; The second ejector plate is provided with a second ejector pin facing upwards, and the mold core is also provided with a second through hole for the second ejector pin to pass through; when the second ejector pin is lifted to the position for the second time, the second ejector plate slides upwards along the connecting rod and lifts the second ejector pin out of the second through hole.

2. The secondary lifting mechanism for a slender ejector pin according to claim 1, characterized in that, A fixing plate is fixedly installed inside the sliding hole. The fixing plate is located below the first ejector plate. The upper end of the connecting rod passes through the fixing plate and is fixedly connected to the lower surface of the first ejector plate.

3. The secondary lifting mechanism for a slender ejector pin according to claim 2, characterized in that, The fixed plate is provided with a buffer member that provides vertical buffering force to the first ejector plate. The two ends of the buffer member are fixedly connected to the lower surfaces of the fixed plate and the first ejector plate, respectively.

4. The secondary lifting mechanism for a slender ejector pin according to claim 2, characterized in that, A guide rod is vertically downward on the lower surface of the mold core, and the lower end of the guide rod is slidably connected to the first ejector plate.

5. The secondary lifting mechanism for a slender ejector pin according to claim 1, characterized in that, The lower end of the connecting rod is provided with a first limiting block to prevent the second ejector plate from sliding out of the connecting rod.

6. The secondary lifting mechanism for a slender ejector pin according to claim 5, characterized in that, There are two connecting rods, which are respectively located on both sides of the support rod.

7. The secondary lifting mechanism for a slender ejector pin according to claim 1, characterized in that, The upper surface of the second ejector plate is provided with a second limiting block for limiting its position; when the ejector plate is lifted to the position for the second time, the upper end of the second limiting block abuts against the lower end of the fixing block, and the upper end of the second ejector is higher than the upper end of the first ejector.

8. The secondary lifting mechanism for a slender ejector pin according to claim 1, characterized in that, The secondary lifting mechanism applied to the slender ejector pin also includes a driving mechanism for driving the second ejector pin plate to slide longitudinally.

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