A honeycomb forming die

Abstract

The utility model belongs to mould technical field, concretely relates to a honeycomb hole forming die, including the die shell, the die shell is sequentially provided with the die core, spring, back seat, the die core is located the lowest side of die shell and the die core bottom surface is with the die shell bottom surface is in the same horizontal plane, and the die core can slide in the die shell, back seat is fixed in the die shell, and back seat is coaxial with the die core and is provided, and the end of back seat towards the die core is coaxial and is provided with the support column of the diameter less than back seat, and spring is sleeved on the support column, and one end of spring is in contact with back seat, and the other end is in contact with the die core, and spring makes the die core bottom surface and die shell bottom surface keep in the same horizontal plane, the die core middle coaxial heart is provided with the thimble hole, and the thimble hole is movably provided with the thimble, still be provided with a plurality of movable holes in the die core, and movable hole is parallelly arranged with the thimble hole, and movable hole is provided with the hole needle fixed in the support column. Through the setting of above-mentioned component, improve the reliability, stability of mould when producing, improve the functional integration of mould simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a honeycomb hole forming mold. Background Technology

[0002] In the field of mechanical manufacturing, drilling machines are traditionally used for machining porous structures (such as honeycomb holes) at the head of products. However, this method has significant limitations: firstly, drilling requires cutting each hole individually, resulting in low efficiency and difficulty in meeting the needs of mass production; secondly, due to the influence of the precision of the cutting tools and the stability of operation, the diameter accuracy and positional accuracy of the machined holes are poor, easily leading to problems such as hole position misalignment and inconsistent hole diameters, which in turn affect the assembly performance and reliability of the product.

[0003] To address the aforementioned issues, cold drawing technology has been increasingly applied to multi-hole machining of product heads. This process involves applying pressure to the material at room temperature using a mold or specialized tool, causing plastic deformation or direct punching to create through holes or blind holes. Compared to drilling, this method significantly improves processing efficiency, enables simultaneous machining of multiple holes, and, thanks to the high-precision positioning of the mold, effectively ensures the accuracy of the hole diameter and position, meeting the high-precision requirements of the product.

[0004] There is also room for improvement in structural stability and functional integration. In actual production, numerous defects have been found in existing cold-drawing hole molds. For example, the positioning of the mold core and multi-hole pins in some molds is inaccurate, leading to fluctuations in hole position accuracy; the reliability of the mold core return mechanism is insufficient, affecting processing continuity; especially for... Figure 2 When processing the workpiece 70 shown, the lack of protective measures for the rod part of the workpiece 70 can easily cause deformation or damage to the rod part of the workpiece 70 during processing.

[0005] Furthermore, in the practical application of the existing cold drawing process, some mold structures are poorly designed when machining through holes, causing waste material to easily accumulate on the mold. After the workpiece is finished, it may get stuck on the multi-hole pin, preventing automatic unloading. This unreasonable design will interfere with the next drawing operation, affecting the machining accuracy of the hole at best, and damaging the mold and product at worst. It also increases downtime and cleaning time and production costs, hindering the further promotion and application of the cold drawing process in mass production. Utility Model Content

[0006] The purpose of this utility model is to provide a honeycomb hole forming mold, which aims to solve the technical problems of insufficient reliability, stability and functional integration of existing molds when producing workpieces.

[0007] To achieve the above objectives, this utility model provides a honeycomb hole forming mold, comprising a mold shell with a through hole in the middle, in which a mold core, a spring, and a rear seat are sequentially arranged. The mold core is located at the bottom of the mold shell, and the bottom surface of the mold core is at the same horizontal plane as the bottom surface of the mold shell. The mold core can slide within the mold shell. The rear seat is fixed inside the mold shell and is coaxially arranged with the mold core. A support column with a diameter smaller than the rear seat is coaxially arranged at one end of the rear seat facing the mold core. The spring is sleeved on the support column, with one end of the spring abutting against the rear seat and the other end abutting against the mold core. The spring keeps the bottom surface of the mold core and the bottom surface of the mold shell at the same horizontal plane. A ejector pin hole is coaxially arranged in the middle of the mold core, and an ejector pin is movably arranged in the ejector pin hole. The mold core also has multiple movable holes, which are arranged parallel to the ejector pin hole. A hole-pulling pin fixed to the support column is arranged in the movable hole.

[0008] Preferably, the mold shell is provided with an installation hole and a protective hole, the protective hole being located below the installation hole, and the diameter of the protective hole being smaller than the diameter of the installation hole.

[0009] Preferably, the diameter of the protective hole matches the diameter of the workpiece to be processed to achieve precise assembly. When the mold core moves towards the rear seat, the workpiece to be processed enters the protective hole, so that the workpiece to be processed is wrapped by the mold shell.

[0010] Preferably, the mold core consists of two parts: a cylinder with a larger diameter and a cylinder with a smaller diameter. In the initial state, the part with a larger diameter is located in the mounting hole, and the part with a smaller diameter is located in the protective hole.

[0011] Preferably, the ejector pin passes through the rear seat and the support column. In the initial state, one end of the ejector pin is flush with the bottom surface of the mold core, and the other end of the ejector pin is provided with a protrusion with a diameter larger than the diameter of the ejector pin. The protrusion protrudes from the rear seat.

[0012] Preferably, in the initial state, one end of the punching pin is fixed to the support column, and the other end is flush with the bottom surface of the mold core.

[0013] Preferably, the diameter of the ejector pin is not less than the diameter of the rod portion of the workpiece.

[0014] Preferably, the diameter of the ejector pin is equal to the diameter of the rod portion of the workpiece.

[0015] The honeycomb hole forming mold provided in this embodiment of the utility model has at least one of the following technical effects:

[0016] This utility model discloses a honeycomb hole forming mold. With the cooperation of the mold shell, mold core, ejector pin, hole-pulling pin, and back seat, the workpiece to be processed is hole-pulled in the mold shell. The positioning is accurate and the hole position is highly precise, while avoiding deformation of the workpiece during hole-pulling. The rod part of the workpiece enters the mold core and is wrapped by the mold core, which protects the rod part of the workpiece. The mold core can accurately return to its original position under the action of the spring. Furthermore, under the action of the ejector pin, the processed product can be automatically demolded, which improves production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 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 a top view of a honeycomb hole forming mold provided in an embodiment of the present utility model.

[0019] Figure 2 for Figure 1 Sectional view at point AA.

[0020] Figure 3 A cross-sectional view of the mold shell in a honeycomb hole forming mold provided for an embodiment of this utility model.

[0021] Figure 4 This is a diagram showing the state of a honeycomb hole forming mold during hole extraction, as provided in an embodiment of this utility model.

[0022] The following are the labeling elements in the figure:

[0023] 10—Mold shell; 11—Mounting hole; 12—Protective hole; 20—Mold core; 21—Ejector pin hole

[0024] 22—Modible Hole; 30—Ejector Pin; 40—Pulling Pin; 50—Rear Seat; 51—Support Column

[0025] 60—Spring; 70—Workpiece to be processed. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0027] 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", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0028] 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 as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] 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.

[0030] In one embodiment of this utility model, such as Figure 1-3 As shown, a honeycomb hole forming mold is provided, including as follows: Figure 1-3 As shown, this embodiment provides a honeycomb hole forming mold, including a mold shell 10. A through hole is formed inside the mold shell 10, and a mold core 20, a spring 60, and a rear seat 50 are sequentially assembled in the through hole. The mold core 20, spring 60, and rear seat 50 are coaxially arranged with the mold shell 10. The mold core 20 is located below the through hole in the mold shell 10 and can slide axially within the mold shell 10. The rear seat 50 is fixed at the upper position of the through hole in the mold shell 10. The spring 60 is disposed between the rear seat 50 and the mold core 20, providing elastic support for the mold core 20 and keeping the bottom surface of the mold core 20 at the same level as the bottom surface of the mold shell 10. The mold core 20 has a coaxial ejector hole 21 in the middle, and the ejector pin 30 is movably inserted in the ejector hole 21. At the same time, the mold core 20 also has multiple movable holes 22 parallel to the ejector hole 21. A hole-pulling pin 40 is installed in the movable hole 22. The end of the hole-pulling pin 40 away from the mold core 20 is fixed to the side of the rear seat 50 facing the mold core 20.

[0031] Specifically, the through hole of the mold shell 10 consists of two parts: a mounting hole 11 and a protective hole 12. The protective hole 12 is located below the mounting hole 11, and the diameter of the protective hole 12 is smaller than the diameter of the mounting hole 11. The mounting hole 11 is mainly used to accommodate the upper structure of the mold core 20, the spring 60, and the rear seat 50. The protective hole 12 plays a protective role in the shape of the workpiece 70 to be processed during the processing.

[0032] The mold core 20 has a stepped cylindrical structure, consisting of a cylinder with a larger diameter and a cylinder with a smaller diameter. In the initial state, the larger diameter part is located in the mounting hole 11 of the mold shell 10, and the smaller diameter part is located in the protective hole 12. The structural design of the mold core 20 not only ensures the stability of the mold core 20 sliding within the mold shell 10, but also cooperates with the protective hole 12 during processing to limit and protect the workpiece. At the same time, the structure of the mold core 20 cooperates with the structure of the mold shell 10, so that the mold core 20 is confined within the mold shell 10.

[0033] The rear seat 50 is fixed to the upper part of the mounting hole 11 of the mold shell 10. The end face of the rear seat 50 away from the mold core 20 is at the same level as the top surface of the mold shell 10. A support column 51 is coaxially provided at the end of the rear seat 50 facing the mold core 20. The diameter of the support column 51 is smaller than the diameter of the rear seat 50. The spring 60 is sleeved on the support column 51. One end of the spring 60 abuts against the rear seat 50, and the other end of the spring 60 abuts against the mold core 20. Under the elastic force of the spring 60 and the cooperation of the protective hole 12 and the structure of the mold core 20, the bottom surface of the mold core 20 and the bottom surface of the mold shell 10 always remain at the same level, ensuring the stability of the initial state.

[0034] The ejector pin 30 is installed through the rear seat 50 and the support column 51. One end of the ejector pin 30 is movably inserted into the ejector pin hole of the mold core 20. In the initial state, the bottom surface of the ejector pin 30 is flush with the bottom surface of the mold core 20. The other end of the ejector pin 30 is provided with a protrusion with a diameter larger than that of the ejector pin 30. The protrusion protrudes from the rear seat 50. The protrusion restricts the ejector pin 30 in the rear seat 50 and the mold shell 20, while facilitating the external pressure mechanism to apply force to the ejector pin 30.

[0035] The hole-pulling needle 40 is inserted into the movable hole of the mold core 20. One end is fixed to the support column 51, and the other end is flush with the bottom surface of the mold core 20 in the initial state. Multiple hole-pulling needles 40 are distributed on the mold core 20 corresponding to the positions of the through holes to be processed on the workpiece 70, so as to ensure that the position of the honeycomb holes of the processed workpiece is accurate.

[0036] This mold is fixed to an external pressure mechanism during use. The processing procedure is as follows: The external pressure mechanism drives the mold to press down on the workpiece 70. The workpiece 70 contacts the mold core 20 and pushes the mold core 20 towards the rear seat 50. The spring 60 is compressed. At this time, the workpiece 70 gradually enters the protective hole 12 of the mold shell 10, and its rod enters the ejector pin hole 21 of the mold core 20. The workpiece 70 is wrapped and protected by the mold core 20 and the mold shell 10. Since the hole-pulling pin 40 is fixed, during the movement of the mold core 20 relative to the hole-pulling pin 40, the hole-pulling pin 40 performs cold hole-pulling operation on the workpiece 70 that has entered the mold shell 10, forming the required honeycomb holes. At this time, the state of the mold is as follows. Figure 4 As shown. When processing through holes that will generate waste, the female mold that fixes the workpiece 70 is provided with a hollow structure through which the waste can pass. The waste generated during processing falls directly into the waste collection box through the hollow structure corresponding to the female mold that fixes the workpiece 70, avoiding accumulation and affecting subsequent processing.

[0037] After the hole-pulling operation is completed, the downward pressing component of the external pressure mechanism applies pressure to the protrusion of the ejector pin 30. The ejector pin 30 moves downward along the ejector pin hole 21, pushing the finished part out of the mold core 20 and the mold shell 10, achieving automatic demolding. Subsequently, the external pressure mechanism resets, and under the action of gravity of the mold core 20 and the elastic deformation of the spring 60, the mold core 20 is pushed back to its initial position, waiting for the next processing cycle.

[0038] The honeycomb hole forming mold in this embodiment achieves efficient and high-precision processing of the honeycomb holes in the workpiece 70 through the precise cooperation of its components. The stepped structure design of the mold shell 10 and the mold core 20 ensures both assembly accuracy and effective protection of the workpiece during processing. The spring 60 ensures the reliable return of the mold core 20, guaranteeing the stability of continuous processing. The automatic demolding function of the ejector pin 30 and the precise positioning of the hole-pulling pin 40 significantly improve production efficiency and product quality, effectively solving the problems of low efficiency, poor precision, and easy damage to workpieces in traditional processing methods.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A honeycomb hole forming mold, characterized in that: The system includes a mold shell (10) with a through hole in the middle. A mold core (20), a spring (60), and a rear seat (50) are sequentially arranged in the through hole of the mold shell (10). The mold core (20) is located at the bottom of the mold shell (10), and its bottom surface is at the same horizontal plane as the bottom surface of the mold shell (10). The mold core (20) can slide within the mold shell (10). The rear seat (50) is fixed inside the mold shell (10) and is coaxially arranged with the mold core (20). A support column (51) with a diameter smaller than the rear seat (50) is coaxially arranged at one end of the rear seat (50) facing the mold core (20). A spring (60) is sleeved on a support column (51). One end of the spring (60) abuts against the rear seat (50), and the other end abuts against the mold core (20). The spring (60) keeps the bottom surface of the mold core (20) and the bottom surface of the mold shell (10) at the same level. A pin hole (21) is coaxially arranged in the middle of the mold core (20), and a pin (30) is movably arranged in the pin hole (21). The mold core (20) is also provided with multiple movable holes (22), which are arranged parallel to the pin hole (21). A hole-pulling pin (40) fixed to the support column (51) is provided in the movable hole (22).

2. The honeycomb hole forming mold according to claim 1, characterized in that: The mold shell (10) is provided with an installation hole (11) and a protective hole (12). The protective hole (12) is located below the installation hole (11), and the diameter of the protective hole (12) is smaller than the diameter of the installation hole (11).

3. The honeycomb hole forming mold according to claim 2, characterized in that: The diameter of the protective hole (12) matches the diameter of the workpiece (70) to achieve precise assembly. When the mold core (20) moves towards the rear seat (50), the workpiece (70) enters the protective hole (12), so that the workpiece (70) is wrapped by the mold shell (10).

4. The honeycomb hole forming mold according to claim 1, characterized in that: The mold core (20) consists of two parts: a cylinder with a large diameter and a cylinder with a small diameter. In the initial state, the part with a large diameter is located in the mounting hole (11), and the part with a small diameter is located in the protective hole (12).

5. A honeycomb hole forming mold according to claim 1, characterized in that: The ejector pin (30) is set through the rear seat (50) and the support column (51). In the initial state, one end of the ejector pin (30) is flush with the bottom surface of the mold core (20), and the other end of the ejector pin (30) is provided with a protrusion with a diameter larger than the diameter of the ejector pin (30). The protrusion protrudes from the rear seat (50).

6. A honeycomb hole forming mold according to claim 1, characterized in that: In the initial state, one end of the punching needle (40) is fixed to the support column (51), and the other end is flush with the bottom surface of the mold core (20).

7. A honeycomb hole forming mold according to claim 1, characterized in that: The diameter of the ejector pin (30) is not less than the diameter of the rod of the workpiece (70).

8. A honeycomb hole forming mold according to claim 7, characterized in that: The diameter of the ejector pin (30) is equal to the diameter of the rod of the workpiece (70).

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