Novel pitched roof return structure

By employing a sloping ejector structure with two sets of sliding and returning components in the mold, the problems of misalignment and instability in the traditional large sloping ejector demolding process are solved, thereby improving the stability and reliability of the mold, reducing mold damage and product defect rate, and improving production efficiency and product quality.

CN224240254UActive Publication Date: 2026-05-15DONGGUAN HUIJING PLASTIC PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN HUIJING PLASTIC PROD CO LTD
Filing Date
2025-06-03
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Traditional large angled ejectors are prone to misalignment and instability during mold demolding, leading to mold damage and reduced product quality, which in turn affects production efficiency and product qualification rate.

Method used

The system employs two sets of sliding and return components, including a combination structure of inclined ejector, fixed positioning block, fixed rod, and inclined ejector guide block, to ensure the stability and reliability of the inclined ejector during demolding and mold closing processes.

Benefits of technology

It improves the stability and reliability of molds, reduces mold damage and product defect rate, and enhances production efficiency and product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a novel pitched roof return structure, which belongs to the field of molds and comprises two groups of slides and return components arranged on the sides, close to each other, of the two groups of slides. The return assembly comprises two sets of pitched roofs, the two sets of pitched roofs are arranged on the sides, close to each other, of the two sets of slides correspondingly, fixed positioning blocks are arranged on the sides, away from each other, of the two sets of pitched roofs correspondingly, and fixed rods are fixedly arranged on the sides, away from each other, of the two sets of fixed positioning blocks correspondingly; fixing rod screws are in threaded connection with the interiors of the two sets of fixing rods correspondingly, angle ejector rods are arranged at the bottoms of the two sets of angle ejectors correspondingly, and angle ejector rod guide blocks are slidably arranged on the outer sides of the two sets of angle ejector rods correspondingly. The novel angle ejector return structure solves the problems of vacancy and instability of a traditional large angle ejector, reduces mold damage and the defective rate of products, improves production efficiency and product quality, improves the reliability of the mold, prolongs the service life of the mold, and reduces production cost.
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Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a novel inclined ejector return structure. Background Technology

[0002] In the field of injection molds, when there are large undercuts on the inner wall of a product, traditional demolding methods often rely on large inclined ejector structures to achieve smooth demolding of complex products. Large inclined ejectors, with their tilt angle, can effectively handle situations where the product shape is complex and there are many internal undercuts, helping the mold to open smoothly and allowing the product to be ejected from the mold. It is a demolding technology widely used in mold design. Its principle is that the inclined ejector provides the space and path required for demolding through the inclined movement of the ejector during mold opening, thereby achieving product demolding.

[0003] However, large angled ejectors have a prominent problem in actual use: they are prone to play and instability. Play refers to the inability of the angled ejector to maintain a tight fit during movement, resulting in wobbling or gaps. Instability manifests as inconsistent movements of the angled ejector during reset or demolding, causing jamming or displacement. These problems can lead to mold damage and reduced product quality, seriously affecting production efficiency and product quality. Mold damage not only increases repair costs and time but may also cause production interruptions; while reduced product quality lowers the product pass rate, increases the defect rate, and causes economic losses to the company.

[0004] Therefore, a novel inclined top return structure is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a novel inclined ejector return structure, which has advantages such as strong stability, high reliability, improved production efficiency, and guaranteed product quality. It solves the problems of traditional large inclined ejectors easily causing misalignment and instability during demolding, leading to mold damage and reduced product quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel inclined top return structure, comprising two sets of rows, and a return component disposed on one side of the two sets of rows that are close to each other;

[0007] The return assembly includes two sets of inclined tops, which are respectively located on the side of the two moving parts that are close to each other. On the side of the two sets of inclined tops that are far apart from each other, there is a fixed positioning block. On the side of the two sets of fixed positioning blocks that are far apart from each other, there is a fixed rod. The inside of the two sets of fixed rods is threaded with a fixed rod screw. The bottom of the two sets of inclined tops is provided with an inclined top rod. The outside of the two sets of inclined top rods is slidably provided with an inclined top rod guide block.

[0008] Furthermore, a mold product is provided between the two sets of rows on their adjacent sides.

[0009] Furthermore, the inner wall of the mold product has a large area of ​​undercuts.

[0010] Furthermore, each of the two sets of inclined ejectors has a groove on the side that is far apart from each other, which is adapted to the size of the undercut, to facilitate the connection between the inclined ejector and the mold product.

[0011] Furthermore, each of the two sets of inclined tops has an installation groove on the side that is far apart from each other, and the two sets of fixing and positioning blocks are respectively connected to the interior of the two sets of installation grooves by bolts.

[0012] Furthermore, the inclined push rod guide block is provided with a guide hole, the diameter of which is adapted to the diameter of the inclined push rod.

[0013] Furthermore, the inclined push rod guide block is slidably disposed on the outside of the inclined push rod through the guide hole, and is used to slide and guide the inclined push rod.

[0014] Furthermore, both sets of the sliding positions have connecting holes inside, and the two sets of fixing rod screws are respectively slidably disposed inside the two sets of connecting holes.

[0015] Furthermore, the cross-sectional shape of the connecting hole is set to T-shape to accommodate the shape of the fixing rod screw.

[0016] Furthermore, the fixing rod has a threaded hole inside, and the fixing rod screw is threaded into the inside of the threaded hole.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. This novel inclined ejector return structure employs two sets of slides, with return components positioned close to each other on one side. These include two sets of inclined ejectors, with a fixed positioning block on one side of each ejector. A fixed rod is fixed to the block, and a screw is threaded into the rod. An inclined ejector rod is located at the bottom of the ejector, and a guide block slides along the outside of the rod. When the slides are pulled apart, the fixed rod disengages from the inclined ejector, achieving smooth demolding. During mold closing, the inclined ejector returns to its original position under the action of the ejector plate spring, the slide returns to its original position via the inclined guide post, and the fixed rod cooperates with the inclined ejector for positioning, ensuring stability.

[0019] 2. This new type of inclined ejector return structure solves the problems of misalignment and instability of traditional large inclined ejectors, reduces mold damage and product defect rate, improves production efficiency and product quality, enhances mold reliability and service life, and reduces production costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is an isometric view of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection axis of the positioning and return components of this utility model;

[0023] Figure 4 This is a side view of the connection between the mold product and the return assembly of this utility model;

[0024] Figure 5 This is another perspective view of the connection between the positioning and return components of this utility model;

[0025] Figure 6 This is another perspective view of the connection between the positioning and return components of this utility model;

[0026] Figure 7 This is a schematic diagram of the return component of this utility model;

[0027] Figure 8 This is a schematic diagram of the mold product of this utility model;

[0028] Figure 9 This is a cross-sectional view of the structure of this utility model.

[0029] In the diagram: 1. Slide; 11. Connecting hole; 2. Return assembly; 21. Angled ejector; 211. Mounting groove; 22. Fixed positioning block; 23. Fixed rod; 24. Fixed rod screw; 25. Angled ejector rod; 26. Angled ejector rod guide block; 261. Guide hole; 3. Mold product; 31. Undercut. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-9 The novel inclined top return structure in this embodiment includes two sets of row positions 1 and a return component 2 disposed on one side close to each other of the two sets of row positions 1.

[0032] In this embodiment, the return assembly 2 includes two sets of inclined tops 21. The two sets of inclined tops 21 are respectively arranged on the side of the two sets of moving positions 1 that are close to each other. On the side of the two sets of inclined tops 21 that are far apart from each other, a fixed positioning block 22 is provided. On the side of the two sets of fixed positioning blocks 22 that are far apart from each other, a fixed rod 23 is fixedly provided. The inside of the two sets of fixed rods 23 is threaded with a fixed rod screw 24. The bottom of the two sets of inclined tops 21 is provided with an inclined top rod 25. The outside of the two sets of inclined top rods 25 is slidably provided with an inclined top rod guide block 26.

[0033] In this embodiment, a mold product 3 is provided between the two sets of row positions 1 on their sides that are close to each other.

[0034] Specifically, mold product 3 is a product that needs to be demolded. It is placed between two sets of slides 1. The demolding and return operations of mold product 3 are realized through the action of slide 1 and return component 2.

[0035] In this embodiment, the inner wall of the mold product 3 is provided with a large area of ​​undercut 31.

[0036] It should be noted that the undercut 31 refers to the complex structure on the inner wall of the mold product 3, which makes it difficult for the product to be directly removed from the mold during demolding. By using the inclined ejector 21 to provide additional demolding space through inclined movement, the product can be smoothly removed from the mold to achieve smooth demolding.

[0037] In this embodiment, each of the two sets of inclined ejectors 21 has a groove on the side that is far apart from each other, which is adapted to the size of the undercut 31, so as to facilitate the connection between the inclined ejector 21 and the mold product 3.

[0038] It should be noted that the design of the slide allows the inclined ejector 21 to fit tightly with the undercut 31 of the mold product 3, ensuring that the inclined ejector 21 can accurately contact the mold product 3 and apply appropriate force during the demolding process, thus achieving smooth demolding.

[0039] In this embodiment, each of the two sets of inclined tops 21 has an installation groove 211 on the side that is far apart from each other, and the two sets of fixed positioning blocks 22 are respectively connected to the interior of the two sets of installation grooves 211 by bolts.

[0040] It should be noted that the mounting groove 211 is used to install the fixed positioning block 22 and is fixed by bolts, which improves the stability and disassembly of the structure and facilitates maintenance and replacement of parts.

[0041] In this embodiment, a guide hole 261 is provided on the inclined push rod guide block 26, and the diameter of the guide hole 261 is adapted to the diameter of the inclined push rod 25.

[0042] It should be noted that the guide hole 261 allows the guide block 26 of the inclined push rod to be tightly fitted onto the inclined push rod 25 and slide along it, providing guidance for the movement of the inclined push rod 25 and ensuring the linearity and stability of its movement.

[0043] In this embodiment, the inclined push rod guide block 26 is slidably disposed on the outside of the inclined push rod 25 through the guide hole 261, and is used to slide and guide the inclined push rod 25.

[0044] Specifically, the inclined push rod guide block 26 cooperates with the inclined push rod 25 through the guide hole 261 to provide sliding guidance for the movement of the inclined push rod 25, ensuring that the inclined push rod 25 keeps moving along the axis of the guide hole 261 during the movement, avoiding deviation and shaking, and improving the stability of the entire structure.

[0045] In this embodiment, both sets of row positions 1 are provided with connecting holes 11, and the two sets of fixing rod screws 24 are respectively slidably disposed inside the two sets of connecting holes 11.

[0046] In this embodiment, the cross-sectional shape of the connecting hole 11 is set to T-shape to accommodate the shape of the fixing rod screw 24.

[0047] Specifically, the connecting hole 11 is used to install the fixing rod screw 24. The fixing rod screw 24 slides in the connecting hole 11, so that the fixing rod 23 can move with the movement of the sliding position 1, realizing the disengagement and engagement with the inclined top 21.

[0048] In this embodiment, the fixing rod 23 has a threaded hole inside, and the fixing rod screw 24 is threaded into the inside of the threaded hole.

[0049] Specifically, the threaded hole allows the fixing rod screw 24 to be tightly connected to the fixing rod 23. Through the threaded connection, the fixing force between the fixing rod 23 and the inclined ejector 21 can be easily adjusted to ensure the stability of the inclined ejector 21 when the mold is closed.

[0050] It should be noted that the return component 2 solves the problems of misalignment and instability that are prone to occur during the demolding process of traditional large inclined ejectors, improves the stability and reliability of the mold, reduces mold damage and product defect rate, thereby improving production efficiency and product quality.

[0051] The working principle of the above embodiments is as follows:

[0052] When the mold is opened, the slide (1) is pulled open, and the fixed rod (23) disengages from the inclined ejector (21) through the movement of the slide (1), so that the inclined ejector (21) can be demolded smoothly. At this time, the inclined ejector guide block (26) slides along the inclined ejector (25) to provide guidance for the movement of the inclined ejector (21). When the mold is closed, the inclined ejector (21) returns to its original position under the action of the ejector plate spring, and the slide (1) is reset under the guidance of the inclined guide post. The fixed rod (23) cooperates with the inclined ejector (21) and positions it through the fixed rod screw (24) to ensure that the inclined ejector (21) remains stable in the mold closed state.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] If this patent discloses or relates to components or structural parts that are fixedly connected to each other, then unless otherwise stated, a fixed connection can be understood as: a fixed connection that can be detached (e.g., using bolts or screws), or a fixed connection that cannot be detached (e.g., riveting, welding). Of course, a fixed connection can also be replaced by an integral structure (e.g., manufactured by casting) (except where it is obviously impossible to use an integral forming process).

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A novel inclined top return structure, characterized in that: It includes two sets of rows (1) and a return component (2) set on one side of the two sets of rows (1) that are close to each other. The return assembly (2) includes two sets of inclined tops (21). The two sets of inclined tops (21) are respectively set on the side of the two sets of moving positions (1) that are close to each other. The two sets of inclined tops (21) are each provided with a fixed positioning block (22) on the side that is far away from each other. The two sets of fixed positioning blocks (22) are each fixedly provided with a fixed rod (23) on the side that is far away from each other. The two sets of fixed rods (23) are each threaded with a fixed rod screw (24). The bottom of the two sets of inclined tops (21) is provided with an inclined top rod (25). The outer side of the two sets of inclined top rods (25) is slidably provided with an inclined top rod guide block (26).

2. The novel inclined top return structure according to claim 1, characterized in that: A mold product (3) is provided between the two sets of rows (1) on their sides that are close to each other.

3. The novel inclined top return structure according to claim 2, characterized in that: The inner wall of the mold product (3) is provided with a large area of ​​undercut (31).

4. A novel inclined top return structure according to claim 3, characterized in that: Both sets of inclined tops (21) have grooves on the opposite sides that are far apart from each other, which are adapted to the size of the undercut (31) to facilitate the connection between the inclined tops (21) and the mold product (3).

5. A novel inclined top return structure according to claim 4, characterized in that: The two sets of inclined tops (21) are provided with mounting grooves (211) on the side away from each other, and the two sets of fixed positioning blocks (22) are respectively connected to the interior of the two sets of mounting grooves (211) by bolts.

6. A novel inclined top return structure according to claim 5, characterized in that: The inclined push rod guide block (26) is provided with a guide hole (261), and the diameter of the guide hole (261) is adapted to the diameter of the inclined push rod (25).

7. A novel inclined top return structure according to claim 6, characterized in that: The inclined push rod guide block (26) is slidably disposed on the outside of the inclined push rod (25) through the guide hole (261) to guide the inclined push rod (25) in a sliding manner.

8. A novel inclined top return structure according to claim 7, characterized in that: Both sets of the row positions (1) have connecting holes (11) inside, and the two sets of fixing rod screws (24) are respectively slidably disposed inside the two sets of connecting holes (11).

9. A novel inclined top return structure according to claim 8, characterized in that: The cross-sectional shape of the connecting hole (11) is set to T-shape to accommodate the shape of the fixing rod screw (24).

10. A novel inclined top return structure according to claim 9, characterized in that: The fixing rod (23) has a threaded hole inside, and the fixing rod screw (24) is threaded into the inside of the threaded hole.