Pre-forming die for single-side lateral pushing of pipe parts
By designing a pre-forming mold for single-sided side-push of tubular parts, and using the side-push mechanism and sliding components to form a U-shaped cavity, the radial uniform distribution of the tube blank material is achieved, solving the problem that existing molds cannot be assembled for production, improving production efficiency and reducing costs.
Patent Information
- Application Number
- CN202520317531.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-02-26
AI Technical Summary
The existing preform mold structure cannot achieve the joint production of left and right parts, which affects production efficiency.
A preforming mold for single-sided side-push of tubular parts is designed, including an upper mold base, a lower mold base, an upper mold insert, an L-shaped insert, a sliding component, and a side-push mechanism. The side-push mechanism pushes the sliding component to form a U-shaped cavity, and the upper mold insert is used to shape the tube blank to achieve radial uniform distribution of material in a local area.
It achieves radial uniform distribution of tube blank material in local areas, improves production efficiency by 50%, meets the needs of assembling left and right parts of similar products, and reduces the production cost of hydroformed products.
Smart Images
Figure CN223847882U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of preforming mould, especially a kind of preforming mould of unilateral side pushing of pipe class parts. BACKGROUND
[0002] In prior art, hydraulic forming process is carried out in internal high pressure forming, and before the overall bulging of parts reaches design state, it is usually necessary to first pass through a procedure, i.e., to press the pipe blank to specified modeling, which is simply called preforming. Preforming can play the role of uniformly distributing materials along the radial direction of pipe blank, and this process is the key process of hydraulic forming process.
[0003] Figure 1 It is a schematic view of the structure of conventional preforming mould in prior art. As shown in Figure 1 The conventional preforming mould structure is composed of upper die 10 and lower die 20. The pipe blank 30 is placed in the lower die cavity, and the upper die 10 goes down until the mould is closed in place to complete forming.
[0004] Figure 2 It is a schematic view of local protruding product and expansion rate. As shown in Figure 2 For the parts with protruding modeling in the middle and expansion rate greater than 3%, the protruding sides are first in contact with the mould surface in the preforming process, while the middle part is in passive state of being pressed down, and it is impossible to uniformly distribute the pipe blank materials in the radial direction. In the internal high pressure forming process, if there is no axial feed in the protruding area, the bulging will be cracked due to excessive deformation.
[0005] At present, affected by the current automobile industry environment, cost reduction and efficiency improvement are the top priority of current project development. If the conventional preforming mould structure is used, the left and right parts cannot be produced by splicing, which seriously affects production efficiency.
[0006] Therefore, the present application inventors design a preforming mould of unilateral side pushing of pipe class parts to overcome the above technical problems. CONTENT OF UTILITY MODEL
[0007] The utility model solves the technical problem that the preforming mould structure in prior art cannot realize left and right part splicing production, and affects production efficiency, and provides a preforming mould of unilateral side pushing of pipe class parts.
[0008] The utility model solves the above technical problems by the following technical scheme:
[0009] A preforming mould of unilateral side pushing of pipe class parts, characterized in that the preforming mould comprises an upper die seat, a lower die seat, an upper die insert, an L-shaped insert, a sliding assembly and a side pushing mechanism, the L-shaped insert is fixed on the lower die seat, and the sliding assembly is slidingly installed on the lower die seat.
[0010] The side pushing mechanism is installed between the upper die seat and the lower die seat, and is used for pushing the sliding assembly to move towards the L-shaped insert, so that a U-shaped cavity is formed between the sliding assembly and the L-shaped insert;
[0011] The upper die insert is fixed on the upper die seat, and is inserted into the U-shaped cavity when the upper die seat moves towards the lower die seat, so as to reshape the pipe blank.
[0012] According to an embodiment of the utility model, the sliding assembly includes a vertical insert and a sliding wedge, the vertical insert is fixed on one side of the sliding wedge, and faces the L-shaped insert.
[0013] According to an embodiment of the utility model, the end faces of the L-shaped insert and the vertical insert are matched with each other in shape, and form the U-shaped cavity.
[0014] According to an embodiment of the utility model, the upper die insert is T-shaped, and the end part facing the U-shaped cavity protrudes outward, and when the upper die insert moves to the L-shaped insert, the end part of the upper die insert is inserted into the U-shaped cavity.
[0015] According to an embodiment of the utility model, the side pushing mechanism includes a driving seat and a reverse side guide plate, the driving seat is fixed on the upper die seat and faces the lower die seat, and the reverse side guide plate is fixed on the lower die seat and is located on the outside of the driving seat.
[0016] When the upper die seat moves towards the lower die seat, the driving seat pushes the sliding wedge to move, so as to drive the vertical insert to move towards the L-shaped insert.
[0017] According to an embodiment of the utility model, the upper part of the other side of the sliding wedge is provided with a first inclined surface, and the lower part of the side surface of the driving seat facing the sliding wedge is provided with a second inclined surface, and the second inclined surface pushes the first inclined surface.
[0018] According to an embodiment of the utility model, the sliding wedge is provided with a limiting part at the lower part of the side surface facing the side pushing mechanism.
[0019] According to an embodiment of the utility model, the thickness of the sliding wedge is greater than or equal to 100mm.
[0020] According to an embodiment of the utility model, the wedge angle of the first inclined surface is 60°.
[0021] According to an embodiment of the utility model, when the driving seat moves to the lowest position, the distance between the first inclined surface and the second inclined surface is greater than or equal to the convex hull difference.
[0022] The positive progress effect of the utility model lies in that:
[0023] The utility model discloses a preforming die of unilateral side pushing of pipe parts, which can realize the radial uniform distribution of pipe blank materials in a local area to meet the purpose of left and right piece splicing production of similar products, thereby improving the production efficiency by 50% and effectively reducing the production cost of the hydraulic forming product.
[0024] The preforming die can be continuously improved in the subsequent use process and finally can be widely applied in the preforming die of hydraulic forming. BRIEF DESCRIPTION OF DRAWINGS
[0025] The above and other features, properties and advantages of the utility model will become more apparent through the following description in combination with the drawings and embodiments, wherein the same reference signs always represent the same features, and wherein:
[0026] Figure 1 It is a structural schematic view of the conventional preforming die in the prior art.
[0027] Figure 2 It is a schematic view of a local protruding product and an expansion rate.
[0028] Figure 3 It is a state schematic view of the preforming die of unilateral side pushing of pipe parts of the utility model in the closed state.
[0029] Figure 4 It is a state schematic view of the preforming die of unilateral side pushing of pipe parts of the utility model in the open state.
[0030] Figure 5 It is a schematic view of the side pushing mechanism in the preforming die of unilateral side pushing of pipe parts of the utility model.
[0031] REFERENCE SIGNS
[0032] Upper die 10
[0033] Lower die 20
[0034] Pipe blank 30, 800
[0035] Upper die holder 100
[0036] Lower die holder 200
[0037] Upper die insert 300
[0038] L-shaped insert 400
[0039] Sliding assembly 500
[0040] Side pushing mechanism 600
[0041] U-shaped cavity 700
[0042] Vertical insert 510
[0043] Sliding wedge 520
[0044] Driving seat 610
[0045] Reverse side guide plate 620
[0046] First inclined surface 521
[0047] Sliding wedge 520
[0048] Second inclined surface 611
[0049] Wedge angle a
[0050] Thickness h1 of sliding wedge
[0051] Distance h2 between first inclined surface and second inclined surface DETAILED DESCRIPTION
[0052] In order to make the above objectives, characteristics and advantages of the present application more apparent, the following will describe the specific embodiments of the present application in detail in conjunction with the drawings.
[0053] Reference will now be made in detail to the embodiments of the present application. The embodiments of the present application will be described in detail with reference to the drawings, wherein the same or similar components are denoted by the same reference numerals. Wherever possible, the same or like reference numerals will be used throughout the drawings to refer to same or like parts, elements or features.
[0054] In addition, although the terms used in the present application are selected from publicly-known terms, some of the terms mentioned in the specification of the present application can be selected by the applicant in his or her judgment, and the detailed meanings thereof are described in the relevant part of the description herein.
[0055] In addition, the present application should be understood not only through the actual terms used, but also through the meanings implied by each term.
[0056] As Figures 3 to 5The utility model discloses a kind of preforming moulds of unilateral side pushing of pipe parts, it includes upper die seat 100, lower die seat 200, upper die insert 300, L-shaped insert 400, sliding assembly 500 and side pushing mechanism 600. Among them, L-shaped insert 300 is fixed on lower die seat 200, and sliding assembly 500 is slidably installed on lower die seat 200. Side pushing mechanism 600 is installed between upper die seat 100 and lower die seat 200, for pushing sliding assembly 500 moves towards L-shaped insert 400, so that sliding assembly 500 and L-shaped insert 400 form a U-shaped cavity 700. Upper die insert 300 is fixed on upper die seat 100 (for example, the upper die insert 300 of protruding screw lock on upper die seat 100). When upper die seat 100 moves towards lower die seat 200, upper die insert 300 inserts U-shaped cavity 700, and performs shaping to pipe blank 800.
[0057] Preferably, sliding assembly 500 includes vertical insert 510 and sliding wedge 520, vertical insert 510 is fixed on one side of sliding wedge 520, towards L-shaped insert 400. The shape of the opposite end face of L-shaped insert 400 and vertical insert 510 matches each other, and forms U-shaped cavity 700.
[0058] Here, L-shaped insert 400 is a fixed part, and is screwed on lower die seat 200. Vertical insert 510 is a side pushing part, and is screwed on sliding wedge 520, so that it can slide on lower die seat 200 in the direction of movement. Side pushing mechanism 600 is arranged outside sliding wedge 520.
[0059] In the embodiment, upper die insert 300 is in T shape, and the end of U-shaped cavity 700 protrudes outward. When upper die insert 300 moves to L-shaped insert 400, the end of upper die insert 300 inserts U-shaped cavity 700.
[0060] Further preferably, side pushing mechanism 600 includes driving seat 610 and reverse guide plate 620, driving seat 610 is fixed on upper die seat 100 (for example, driving seat 610 is screwed on upper die seat 100), towards lower die seat 200, and reverse guide plate 620 is fixed on lower die seat 200 (for example, reverse guide plate 620 is screwed on lower die seat 200), outside driving seat 610. When upper die seat 100 moves towards lower die seat 200, driving seat 610 pushes sliding wedge 520 to move, so as to drive vertical insert 510 to move towards L-shaped insert 400.
[0061] A first inclined surface 521 is arranged on the upper portion of the other side of the sliding wedge 520, and a second inclined surface 611 is arranged on the lower portion of the side of the driving seat 610, and the first inclined surface 521 is pushed by the second inclined surface 611. The wedge angle of the first inclined surface 521 can be preferably 60°, and the wedge angle of the second inclined surface 611 can also be preferably 60°, so that the two are matched up and down.
[0062] In addition, in order to meet the process requirements and the stability of production, a limiting portion 522 is arranged on the lower portion of the side of the sliding wedge 520 towards the side pushing mechanism 600. The thickness h1 of the sliding wedge 520 is preferably greater than or equal to 100 mm.
[0063] When the driving seat 610 moves to the lowest position, the distance h2 between the first inclined surface 521 and the second inclined surface 611 is greater than or equal to the convex fall. Here, the "convex fall" is the normal distance from the convex top point of the local convex region to the convex root, as shown in the normal distance A. Figure 2
[0064] According to the above structural description, as shown in the figure, Figure 4 When the upper die seat 100 moves downward, the driving seat 610 of the side pushing mechanism 600 drives the sliding wedge 520 and the vertical insert 510 to move to the side of the L-shaped insert 400. At the same time, the upper die insert 300 moves downward to shape the pipe blank 800.
[0065] As shown in the figure, Figure 3 When the pre-forming die is closed, the forming of the pipe blank is completed, and the radial uniform distribution of the pipe blank material is ensured. After the pipe blank is formed, the upper die seat 100 moves upward, and the driving seat 610 of the side pushing mechanism 600 drives the sliding wedge 520 and the vertical insert 510 to move reversely to the L-shaped insert 400 to open the die. In this way, the workpiece can be easily taken out for circulation, and the pipe blank can be put in again for the next working cycle. The pre-forming die meets the process requirements and can realize batch production.
[0066] The pre-forming die for unilateral side pushing of pipe parts can realize the radial uniform distribution of the pipe blank material in the local region, so as to realize the purpose of left and right piece splicing production of the product, and improve the production efficiency by 50%.
[0067] In summary, the pre-forming die for unilateral side pushing of pipe parts can realize the radial uniform distribution of the pipe blank material in the local region, so as to meet the purpose of left and right piece splicing production of the product, and improve the production efficiency by 50%, thereby effectively reducing the production cost of the hydraulic forming product.
[0068] The pre-forming die can be continuously improved in the subsequent use process, and finally can be widely applied to the pre-forming die of hydraulic forming.
[0069] The above-described disclosure merely provides examples for those skilled in the art, and does not constitute a limitation on the present application. Although the present application is not explicitly described, those skilled in the art can make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in the present application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present application.
[0070] Meanwhile, the present application uses specific words to describe the embodiments of the present application. As "one embodiment", "an embodiment", and / or "some embodiments" means a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "an embodiment" or "one embodiment" or "an alternative embodiment" mentioned in different places in the specification twice or more does not necessarily mean the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be properly combined.
[0071] Similarly, it should be noted that, in order to simplify the description of the present application and to help understand one or more embodiments of the present application, the foregoing description of the embodiments of the present application sometimes combines various features into one embodiment, figure or description thereof. However, this method of disclosure does not mean that the features required by the present application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiments disclosed above. Some embodiments use numbers to describe components, attributes and quantities. It should be understood that such numbers used in the description of the embodiments are modified by the modifier "about", "approximately" or "generally" in some examples.
[0072] Although the above describes the specific embodiments of the present application, those skilled in the art should understand that these are only illustrative, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application. However, these changes and modifications all fall within the protection scope of the present application.
Claims
1. A preforming die for single-sided push of tubular parts, characterized by, The preforming die comprises an upper die seat, a lower die seat, an upper die insert, an L-shaped insert, a sliding assembly and a side pushing mechanism, the L-shaped insert is fixed on the lower die seat, and the sliding assembly is slidingly installed on the lower die seat; The side pushing mechanism is installed between the upper die seat and the lower die seat, and is used for pushing the sliding assembly to move towards the L-shaped insert, so that a U-shaped cavity is formed between the sliding assembly and the L-shaped insert; The upper die insert is fixed on the upper die seat, and is inserted into the U-shaped cavity when the upper die seat moves towards the lower die seat, so as to reshape the pipe blank.
2. The preforming die for one-side push of a tubular part according to claim 1, wherein The sliding assembly comprises a vertical insert and a sliding wedge, the vertical insert is fixed on one side of the sliding wedge and faces the L-shaped insert.
3. The preforming die for one-side push of a tubular part according to claim 2, wherein The opposite end faces of the L-shaped insert and the vertical insert are matched with each other in shape to form the U-shaped cavity.
4. The preforming die for one-side push of a tubular part according to claim 3, wherein The upper die insert is T-shaped and protrudes outward at the end facing the U-shaped cavity, and the end of the upper die insert is inserted into the U-shaped cavity when the upper die insert moves to the L-shaped insert.
5. The preform mold for one-side push of a tubular part according to claim 2, wherein The side pushing mechanism comprises a driving seat and a reverse guide plate, the driving seat is fixed on the upper die seat and faces the lower die seat, and the reverse guide plate is fixed on the lower die seat and located outside the driving seat. When the upper die seat moves towards the lower die seat, the driving seat pushes the sliding wedge to move, so as to drive the vertical insert to move towards the L-shaped insert.
6. The preform mold for one-side push of a tubular part according to claim 5, wherein An upper portion of the other side of the sliding wedge is provided with a first inclined surface, and a lower portion of the side of the driving seat facing the sliding wedge is provided with a second inclined surface, and the second inclined surface pushes the first inclined surface.
7. The preform mold for one-side push of a tubular part according to claim 2, wherein A limiting portion is arranged on the lower portion of the side of the sliding wedge facing the side pushing mechanism.
8. The preform mold for one-side push of a tubular part according to claim 2, wherein The thickness of the sliding wedge is greater than or equal to 100 mm.
9. The preform mold for one-side push of a tubular part according to claim 6, wherein The wedge angle of the first inclined surface is 60°.
10. The preform mold for one-side push of a tubular part according to claim 6, wherein When the driving seat moves to the lowest position, the distance between the first inclined surface and the second inclined surface is greater than or equal to the convex hull difference.