A structure for optimizing die assembly of a bumper inner split die steel interference

Abstract

The utility model belongs to the field of automobile injection mold, concretely relates to a kind of bumper inner parting mold steel interference's mould matching optimization structure of mould closing, including front mould component and rear mould component, and the surface of front mould component and rear mould component is the steel interference form of mutual locking in the direction of mould opening, and rear mould component and front mould component mutual locking range are provided with research and matching insert slot, research and matching insert slot is fixed with research and matching insert, and the surface of research and matching insert and the surface of rear mould component smoothly meet according to product shape.The utility model designs research and matching insert on rear mould component in the position of existing steel interference, research and matching insert is taken out when early research and matching mold, so that front and rear mould can directly mould closing, and mould closing action and effect are not different from common mould, simple and convenient, stable and reliable.After mould matching is completed, research and matching insert is loaded into rear mould component again, to meet product modeling and process demand, mould normal production work.

Description

Technical Field

[0001] This utility model belongs to the field of automotive injection molds, specifically relating to an optimized mold matching structure for rigidity interference during the parting mold assembly of a bumper inner parting mold. Background Technology

[0002] like Figure 1 As shown, for bumper plastic molds, due to product design and process requirements, some internal parting molds often exhibit rigid interference between the front and rear mold components in the mold opening direction. During the initial mold assembly, the fitter on the production floor needs to use nitrogen springs to assist in ejection, first pushing the rear mold component out via a push plate and rear mold component rod, then retracting it until there is no interference before closing the mold. This assembly process is cumbersome, unstable, and because the rear mold is a moving part, the assembly effect is poor, making it difficult to meet product process requirements. Alternatively, some mold factories grind away the interference area of ​​the rear mold component, re-weld it after mold assembly, and re-process it, which is time-consuming, labor-intensive, and inconvenient for later maintenance. These issues pose a significant technical challenge for stable and reliable production, convenient processing, and cost savings. Utility Model Content

[0003] To address the aforementioned problems in existing technologies, this utility model provides an optimized mold-fitting structure for rigid interference during the parting mold assembly of a bumper. At the location where rigid interference exists in the rear mold component, a mating insert is designed and fitted onto the rear mold component. During mold assembly, the mating insert is first removed, allowing the front and rear molds to be directly assembled. The assembly action and effect are indistinguishable from conventional molds, offering simplicity, convenience, stability, and reliability. After assembly, the mating insert is then installed into the rear mold component, thus meeting product styling and process requirements, and enabling normal mold production.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an optimized mold fitting structure for rigid interference during the parting mold closing process of a bumper, comprising a front mold component and a rear mold component. The surfaces of the front mold component and the rear mold component are in contact and their contact surfaces are compatible. A fitting insert groove is provided at one corner where the rear mold component contacts the front mold component. A fitting insert is fixed in the fitting insert groove. The surface of the fitting insert is smoothly connected to the surface of the rear mold component and is on the same surface. When the mold is closed, the corner where the rear mold component contacts the front mold component is designed as a fitting insert groove.

[0005] Furthermore, the distance between the outermost edge of the groove of the fitting insert and the lower end of the groove on the contact surface of the front mold component is b, where b is 2mm.

[0006] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model has a simple and reliable structure. At locations where there is rigid interference in the rear mold components, a mating insert is designed and fitted on the rear mold components. During the initial mold assembly process, the mating insert is removed first, allowing the front and rear molds to be directly closed. The closing action and effect are no different from conventional molds, making it simple, convenient, stable, and reliable. After mold assembly is completed, the mating insert is then installed into the rear mold components, thus meeting product design and process requirements, and enabling normal mold production. This utility model optimizes the structure of the rear mold components, allowing for mold assembly like conventional molds. The mating insert reduces the difficulty and workload for fitters, eliminates the need for auxiliary ejection nitrogen springs, significantly reduces the procurement, processing, and mating costs of mold accessories, and avoids the risk of mold collisions during assembly. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of a conventional mold when rigid interference exists;

[0008] Figure 2 This is a schematic diagram of the rear mold component structure of this utility model. Figure 1 ;

[0009] Figure 3 This is a schematic diagram of the fitting structure of the present utility model;

[0010] Figure 4 This is a schematic diagram of the front mold component and the rear mold component of this utility model when they are closed.

[0011] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0012] Figure 6 This is a schematic diagram of the rear mold component structure of this utility model. Figure 2 ;

[0013] Figure 7 for Figure 6 Enlarged view of section B in the middle. Detailed Implementation

[0014] 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.

[0015] like Figure 1As shown, for bumper plastic molds, due to product design and process requirements, some internal parting molds often exhibit rigid interference between the front mold component 1 and the rear mold component 2 in the mold opening direction, with an interference amount of 'a'. In this case, during the initial mold assembly, the fitter on the production site needs to use a nitrogen spring 6 to assist in ejection. Through the push plate 8 and the rear mold component rod 7, the rear mold component 2 is first ejected, and then retracted until it no longer interferes before the mold is closed. Therefore, the ejection height assisted by the nitrogen spring 6 × tan(inclination angle of the rear mold component rod 7) > a + 2mm, where 2mm is the safe distance for mold assembly. Only then will the front mold component 1 and the rear mold component 2 not interfere when the mold is closed. The mold assembly process is cumbersome, has poor stability, and because the rear mold is a moving part, the assembly effect is poor, making it difficult to meet product process requirements.

[0016] Alternatively, some mold factories grind away the interference position of the rear mold component 2, re-weld it after the mold is assembled, and process it again, which is time-consuming and labor-intensive, and makes later maintenance inconvenient.

[0017] These challenges pose a technical hurdle to achieving stable and reliable production, convenient processing, and cost savings.

[0018] Please see Figure 2-7 Based on the above problems, this utility model provides the following technical solution: an optimized mold fitting structure for rigid interference during the mold closing of a parting mold inside a bumper, comprising a front mold component 1 and a rear mold component 2. The surfaces of the front mold component 1 and the rear mold component 2 have a rigid interference shape with interlocking parts in the mold opening direction. A fitting insert groove 5 is provided at the interlocking range between the rear mold component 2 and the front mold component 1. The position of the fitting insert groove 5 is determined according to the interference position when the front mold component 1 and the rear mold component 2 are closed. A fitting insert 3 is fixed in the fitting insert groove 5. The surface of the fitting insert 3 smoothly contacts the surface of the rear mold component 2 according to the product shape. The fitting insert 3 is fixed to the rear mold component 2 by fixing screws 4. After mold component 2 is installed, the rear mold component 2 and the front mold component 1 can meet the normal production of the mold and also meet the needs of product styling and process. When the mold is closed, the mating insert 3 on the rear mold component 2 is removed. The area where the rear mold component 2 and the front mold component 1 interlock is designed as a mating insert groove 5. The distance between the outermost part of the groove 5 and the lower end of the groove on the contact surface of the front mold component 1 is b, which is 2mm. This distance is the safe distance when the rear mold component 2 and the front mold component 1 are closed, so that there is no interference when the rear mold component 2 and the front mold component 1 are closed. The mold can be closed normally, and the mold closing action and effect are no different from those of conventional molds. It is simple, convenient, stable and reliable.

[0019] This invention is also applicable to other types of molds where rigid interference between the front and rear molds prevents direct mold closing, and where there is a feasible solution for designing and fitting insert 3. It should be noted that during normal production, mold rigidity interference is resolved by the front mold component 1 pressing and resetting the rear mold component 2 to complete the mold closing action; this is a common mold closing method for bumper molds.

[0020] The principle of this utility model during mold closing and normal production is as follows: When the mold is initially prepared for assembly, the fitting insert 3 is first removed from the rear mold component 2, allowing the front and rear molds to be directly closed. After the mold is assembled, the fitting insert 3 is then reinstalled into the rear mold component 2 using fixing screws 4, thus meeting the product's shape and process requirements, and the mold can then operate normally. This structure is safe and reliable in actual production, avoids the risk of mold collision during assembly, and facilitates subsequent mold maintenance, as has been fully verified.

[0021] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mold-fitting optimization structure for rigid interference during parting mold assembly in a bumper, comprising a front mold component (1) and a rear mold component (2), wherein the surfaces of the front mold component (1) and the rear mold component (2) have an interlocking rigid interference pattern in the mold opening direction, characterized in that, The rear mold component (2) has a fitting insert groove (5) at the interlocking range with the front mold component (1). A fitting insert (3) is fixed in the fitting insert groove (5). The surface of the fitting insert (3) is smoothly connected to the surface of the rear mold component (2). When the mold is fitted in the early stage, the fitting insert (3) at the interlocking range between the rear mold component (2) and the front mold component (1) is taken out from the fitting insert groove (5).

2. The optimized mold-fitting structure for rigidity interference during parting mold assembly in a bumper, as described in claim 1, is characterized in that... The distance between the outermost edge of the groove of the fitting insert (5) and the lower end of the groove on the contact surface of the front mold component (1) is b, where b is 2mm.

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