Multi-bend enameled wire rubber shell forming die

Abstract

The utility model provides a multi-bend enameled wire rubber shell forming mold which comprises an upper mold and a lower mold, the lower mold comprises a lower mold plate, an ejector plate and a lower mold bottom plate, a lower mold insert used for forming a multi-bend enameled wire rubber shell is arranged on the lower mold plate, and a first rubber shell forming groove is formed in the upper surface of the lower mold insert; the bottom surface of the first plastic shell forming groove is provided with a first forming protruding part, the corner of the left side wall of the first plastic shell forming groove is provided with a first straight top, the corner of the right side wall of the first plastic shell forming groove is provided with a second straight top, and the first plastic shell forming groove is provided with a first enameled wire avoiding groove below the head of the second straight top. The multi-bend enameled wire rubber shell forming mold has the remarkable beneficial effects in the aspects of optimizing the mold stripping process, improving the mold stripping efficiency, reducing mold abrasion, protecting products, meeting diversified production requirements and the like, and has important significance in improving the product quality, reducing the production cost and enhancing the enterprise competitiveness.

Description

Technical Field

[0001] This application relates to the field of injection molds, and particularly to a multi-bend enameled wire plastic shell forming mold. Background Art

[0002] In the field of electronic component manufacturing, multi-bend enameled wires, as important connection and transmission components, are widely used in various motors, transformers, and electrical control systems. These enameled wires not only need to have good electrical conductivity and insulation properties, but the plastic shells coated on their exteriors also need to meet specific mechanical strength and shape requirements to protect the internal enameled wires from the external environment. However, during the forming process of the multi-bend enameled wire plastic shell, due to its complex structure with multiple bending parts, the forming and demolding operations become particularly difficult.

[0003] The existing multi-bend enameled wire plastic shell forming technologies face many challenges. On the one hand, due to the irregular shape at the bending points of the enameled wire, directly forming in the mold at one time often causes defects in the plastic shell at these parts, such as cracks, deformations, or inaccurate dimensions, affecting the overall quality and service life of the product. To make up for this deficiency, the traditional method often adopts a secondary encapsulation process, that is, after the preliminary forming, additional encapsulation treatment is carried out on the key parts to enhance the strength and integrity of the plastic shell. However, this method not only increases the production process and cost, but may also lead to low production efficiency and is difficult to meet the requirements of large-scale production.

[0004] On the other hand, to solve the problem of difficult demolding, some manufacturers try to adopt complex mold structures such as slider lifters. Although these structures can improve the demolding effect to a certain extent, they are complex in design, difficult to manufacture, costly, and pose higher requirements for the maintenance and management of the mold. In addition, the complex mold structure may also lead to a long mold debugging cycle, affecting the rapid market launch of new products. Summary of the Utility Model

[0005] The purpose of this application is to provide a multi-bend enameled wire plastic shell forming mold, aiming to achieve efficient one-time forming of the multi-bend enameled wire plastic shell by optimizing the mold structure, while reducing production costs and improving production efficiency.

[0006] To achieve the above purpose, this application provides the following technical solutions:

[0007] A multi-bending enameled wire plastic shell forming die, including an upper die and a lower die. The lower die includes a lower template, a thimble plate and a lower die bottom plate. A lower die insert for forming a multi-bending enameled wire plastic shell is arranged on the lower template. A first plastic shell forming groove is arranged on the upper surface of the lower die insert. A first forming protrusion is arranged on the bottom surface of the first plastic shell forming groove. A first direct ejector is arranged at the corner of the left side wall of the first plastic shell forming groove. A second direct ejector is arranged at the corner of the right side wall of the first plastic shell forming groove. A first enameled wire avoiding groove is arranged below the head of the second direct ejector of the first plastic shell forming groove.

[0008] Furthermore, a first limit card slot part is arranged on the first enameled wire avoiding groove for fixing the first enameled wire.

[0009] Furthermore, a second limit card slot part is arranged on one side of the lower die insert for fixing the first enameled wire.

[0010] Furthermore, ejector rods are arranged at the bottom of the lower die insert.

[0011] Furthermore, a first thimble is arranged at the bottom of the first direct ejector, and a second thimble is arranged at the bottom of the second direct ejector.

[0012] Furthermore, the first direct ejector includes a first vertical part and a first horizontal forming part.

[0013] The beneficial effects of this application are as follows:

[0014] (1) This application adopts a unique mold ejection mechanism, that is, the lower die insert drives the first direct ejector and the second direct ejector to first rise upward, and preliminarily ejects the entire formed plastic shell out of the lower template. This step effectively reduces the adhesion between the plastic shell and the mold, laying a foundation for subsequent complete demolding. Subsequently, the first direct ejector and the second direct ejector continue to move upward synchronously, ejecting the formed multi-bending enameled wire and plastic shell as a whole out of the lower die insert, realizing a fast and smooth mold ejection process, and greatly improving the production efficiency and automation degree.

[0015] (2) Through the design of staged mold ejection in this application, the direct friction and collision between mold components are reduced during the mold ejection process, and the wear degree of the mold is reduced. Especially the first direct ejector and the second direct ejector, as key mold ejection components, are reasonably designed and accurately operated, effectively avoiding the problem of mold damage caused by improper mold ejection, thereby prolonging the service life of the mold and reducing the maintenance cost of the enterprise.

[0016] (3) During the mold ejection process, this mold can ensure that the multi-bent enameled wire and the plastic shell are ejected smoothly as a whole, avoiding problems such as deformation, fracture of the enameled wire or damage to the plastic shell caused by uneven ejection force or improper direction. This protection mechanism helps to improve the product qualification rate, reduce waste generation, and lower production costs. Brief Description of the Drawings

[0017] Figure 1 It is a cross-sectional view of the multi-bent enameled wire plastic shell forming mold provided by an embodiment of the present application;

[0018] Figure 2 It is a three-dimensional structure schematic diagram of the lower mold insert, the first direct ejector and the second direct ejector provided by an embodiment of the present application;

[0019] Figure 3 It is a three-dimensional structure schematic diagram of the first direct ejector and the second direct ejector after leaving the lower mold insert provided by an embodiment of the present application;

[0020] Figure 4 It is a three-dimensional structure schematic diagram of the first direct ejector and the second direct ejector after leaving the plastic shell provided by an embodiment of the present application;

[0021] Figure 5 It is a three-dimensional structure schematic diagram of the multi-bent enameled wire plastic shell after forming provided by an embodiment of the present application;

[0022] Description of the Reference Numerals:

[0023] 1. Upper mold; 2. Lower mold; 3. Enameled wire; 4. Plastic shell;

[0024] 21. Lower template; 22. Ejector plate; 23. Lower mold bottom plate; 24. Lower mold insert; 25. First direct ejector; 26. Second direct ejector; 27. Ejector rod; 28. First ejector pin; 29. Second ejector pin;

[0025] 241. First plastic shell forming groove; 242. First forming protrusion; 243. First enameled wire avoiding groove; 244. First limiting card slot part; 245. Second limiting card slot part;

[0026] 251. First vertical part; 252. First horizontal forming part; Detailed Embodiment

[0027] The terms used in the embodiment part of the present application are only used to explain the specific embodiments of the present application, rather than aiming to limit the present application. The following will describe the embodiments of the present application in detail with reference to the drawings.

[0028] As Figure 1 and Figure 5As shown, this embodiment provides a multi-bending enameled wire plastic shell forming mold, which includes an upper mold 1 and a lower mold 2. The lower mold is specifically composed of a lower template 21, a thimble plate 22, and a lower mold bottom plate 23, which are interconnected by fasteners or guiding mechanisms to ensure the stability and precision of the mold.

[0029] As Figure 2 shown, on the lower template 21, a key component for forming the multi-bending enameled wire plastic shell - a lower mold insert 24 is provided. The lower mold insert 24 is made by precision machining, and its upper surface is provided with a first plastic shell forming groove 241, and the shape of this groove matches the multi-bending enameled wire plastic shell to be formed. On the bottom surface of the first plastic shell forming groove 241, a first forming protrusion 242 is provided, which is used to form the inner cavity structure of the plastic shell during the forming process.

[0030] The lower mold insert 24 and the first plastic shell forming groove 241 can be set according to the number of enameled wires.

[0031] To solve the problems of multi-bending enameled wires during the forming and demolding processes, in this embodiment, a first straight ejector 25 is provided at the left side wall corner of the first plastic shell forming groove 241, and a second straight ejector 26 is provided at the right side wall corner. The design of these two straight ejectors enables sufficient ejection force to be provided during demolding, ensuring that the plastic shell and the enameled wire can smoothly separate from the lower mold insert 24.

[0032] As Figure 2 shown, in addition, at the position of the first plastic shell forming groove 241 below the head of the second straight ejector 26, a first enameled wire avoidance groove 243 is also provided, which is used to provide sufficient space for the bent part of the enameled wire during the forming process. At the same time, a first limit card slot part 244 is also provided on the first enameled wire avoidance groove 243, and this card slot part can accurately fix the position of the first enameled wire, ensuring its stability and accuracy during the forming process.

[0033] As Figure 3 and Figure 4 shown, during the demolding process, the lower mold insert 24 first drives the first straight ejector 25 and the second straight ejector 26 to rise upward, initially ejecting the entire formed plastic shell out of the lower template 21. Subsequently, the first straight ejector 25 and the second straight ejector 26 continue to move upward synchronously, ejecting the formed multi-bending enameled wire and plastic shell as a whole out of the lower mold insert 24. At this time, due to the existence of the first limit card slot part 244, the enameled wire is stably fixed in the plastic shell and is not easily detached or displaced. Finally, the operator can take out the first straight ejector 25 and the second straight ejector 26 from both sides respectively, thus completing the demolding operation of the multi-bending enameled wire and the plastic shell.

[0034] Further implementation

[0035] Embodiment Two

[0036] As Figure 2 shown, on the basis of Embodiment 1, the mold structure is further optimized in this embodiment. Specifically, a second limiting slot portion 245 is further provided on one side of the lower die insert 24. This slot portion cooperates with the first limiting slot portion 244 to jointly provide a double fixation effect for the first enameled wire. This design further improves the stability of the enameled wire during the molding and demolding processes, reducing the rejection rate caused by the displacement or detachment of the enameled wire.

[0037] Embodiment 3

[0038] As Figure 2 shown, in addition, in order to improve the automation degree and demolding efficiency of the mold, a ejector rod 27 is further provided at the bottom of the lower die insert 24 in this embodiment. The ejector rod 27 is connected to the ejector pin plate 22 or an external driving mechanism, and can provide an additional ejection force for the lower die insert 24 during the demolding process. In this way, during demolding, the ejector rod 27, together with the first direct ejector 25 and the second direct ejector 26, can eject the molded plastic shell and the enameled wire out of the mold more quickly and smoothly, improving the production efficiency.

[0039] Embodiment 4

[0040] As Figure 2 shown, in order to enhance the ejection effect of the direct ejector, a first ejector pin 28 is provided at the bottom of the first direct ejector 25, and a second ejector pin 29 is provided at the bottom of the second direct ejector 26 in this embodiment. These ejector pins are made of high-strength materials and have sufficient hardness and wear resistance.

[0041] Embodiment 5

[0042] As Figure 2 shown, finally, in order to further optimize the structure and performance of the direct ejector, the first direct ejector 25 is improved in this embodiment. Specifically, the first direct ejector 25 is designed to include two parts: a first vertical portion 251 and a first horizontal molding portion 252. The first vertical portion 251 is used to connect with the ejector pin to transfer the ejection force; while the first horizontal molding portion 252 is closely fitted with the side wall of the first plastic shell molding groove 241 to provide support and guidance for the plastic shell during the demolding process. This design not only improves the rigidity and stability of the direct ejector, but also helps to ensure the shape and dimensional accuracy of the plastic shell during the demolding process.

[0043] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, or an indirect connection through an intermediate medium, or the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0044] The devices or elements referred to in the embodiments of the present application or implied must have a specific orientation, be constructed and operate in a specific orientation, and thus cannot be construed as a limitation on the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely defined.

[0045] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and the above-mentioned drawings of the embodiments of the present application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described here, for example, can be implemented in an order other than those illustrated or described here. In addition, the terms "may include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and not to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features. And these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-bend enameled wire shell forming mold, comprising an upper mold and a lower mold, wherein the lower mold comprises a lower mold plate, an ejector plate and a lower mold bottom plate, characterized in that: The lower mold plate is provided with a lower mold insert for forming a multi-bend enameled wire rubber shell, the upper surface of the lower mold insert is provided with a first rubber shell molding groove, the bottom surface of the first rubber shell molding groove is provided with a first molding protrusion, the first rubber shell molding groove is provided with a first straight top at the corner of the left side wall, the first rubber shell molding groove is provided with a second straight top at the corner of the right side wall, and the first rubber shell molding groove is provided with a first enameled wire avoidance groove below the head of the second straight top.

2. The multi-bend enameled wire shell forming mold according to claim 1, characterized in that: The first enameled wire avoidance groove is provided with a first limit clamping groove portion for fixing the first enameled wire.

3. The multi-bend enameled wire shell forming mold according to claim 1, characterized in that: A second limiting groove portion is provided on one side of the lower mold insert for fixing the first enameled wire.

4. The multi-bend enameled wire shell forming mold according to claim 1, characterized in that: A push rod is arranged at the bottom of the lower mold insert.

5. The multi-bend enameled wire shell forming mold according to claim 1, characterized in that: A first ejector pin is disposed at the bottom of the first straight top, and a second ejector pin is disposed at the bottom of the second straight top.

6. The multi-bend enameled wire shell forming mold according to claim 1, characterized in that: The first straight top includes a first vertical portion and a first horizontal forming portion.

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