A mold capable of processing different axle base front floor

Abstract

A die for processing front floor with different wheelbase includes a head punch and a tail punch, which are used to make the front part and the rear part of the front floor through an open draw process in the step direction, and further includes a wheelbase length variation area for adapting to the length variation of the front floor, which is used to make the front floor with the same cross-sectional shape in the step direction. The die for processing front floor with different wheelbase according to the present application uses the open draw process to make the conformal area of the rear part of the front floor under the premise of ensuring the product quality and not wasting raw materials, realizes the die sharing of the front floor parts with different total wheelbase but the same cross-sectional shape of the conformal area, and can produce the front floor through a double-cavity process or a one-die two-piece process, which optimizes the die investment, material cost, production cost and development cycle, and has excellent economic benefits.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile front floor architecture development, and particularly relates to a mold capable of processing front floors with different wheelbases. BACKGROUND

[0002] At present, the competition in the automobile market is increasingly fierce, and automobile manufacturers need to speed up the product update cycle on the premise of cost control to ensure market competitiveness. Therefore, modularization and architecture vehicle construction have become a trend.

[0003] Common development work of making the same architecture bear high, low, crossover and other different models often sets the wheelbase change area of the front floor in the rear part of the front floor area, and the change in the wheelbase length of high, low, crossover and other different models is generally absorbed through the rear part of the architecture front floor area, which is mainly realized by designing front floors, longitudinal beams, door sills and their inner plates with different lengths.

[0004] However, under the concept of architecture vehicle construction, not only the engine compartment, rear floor area parts and molds are shared, but also the front floor wheelbase change area molds are shared to reduce the development work of parts and tooling, reduce the development cycle and investment cost. For the current conventional development mode of parts and molds, three front floor parts and their corresponding molds are generally developed for three types of vehicles, totaling nine to twelve sets of molds, and even if the mold sharing of one process can be realized, it will also cost millions of raw materials, which loses the meaning of mold sharing. SUMMARY

[0005] The present application provides a mold capable of realizing common mold production of front floors of different wheelbase vehicles.

[0006] The mold capable of processing front floors with different wheelbases provided by the present application comprises a head male die and a tail male die, the head male die and the tail male die are respectively used to make the front part and the rear part of the front floor through the opening draw process in the step direction, the mold further comprises a wheelbase length change area for adapting to the length change of the front floor, and the wheelbase length change area is used to make the front floor with the same arbitrary cross-sectional shape in the step direction.

[0007] Further, the mold capable of processing front floors with different wheelbases further comprises a locking rib for closing draw, and the locking rib is arranged on both sides of the mold capable of processing front floors with different wheelbases in the step direction.

[0008] Further, the mold capable of processing front floors with different wheelbases further comprises a blank holder for controlling material inflow, and the initial position of the blank of the left and right side edges of the front floor is located on the blank holder.

[0009] Further, the initial position of the blank of the front floor front part is located on the head punch, and the initial position of the blank of the front floor rear part is located on the tail punch.

[0010] Further, the mold comprises a plurality of reinforcement rib forming portions provided on the tail punch, and the reinforcement rib forming portions are used to form rear reinforcement ribs arranged continuously along the width direction of the front floor.

[0011] Further, the reinforcement rib forming portions comprise adjacent and alternating reinforcement punches and reinforcement recesses, and the reinforcement punches and the reinforcement recesses are used to form convex ribs and concave ribs of the rear reinforcement ribs, and the convex ribs and the concave ribs are connected in a curved surface.

[0012] Further, the mold comprises a first mold cavity and a second mold cavity, and the first mold cavity and the second mold cavity share upper and lower bottom plates, and the first mold cavity and the second mold cavity are respectively provided with first and second punches separated from each other for producing the front floor, and the first mold cavity and the second mold cavity are used to produce two front floors respectively using two rolls of blanks.

[0013] Further, the mold comprises a third punch, and the third punch comprises first and second punches connected integrally for producing the front floor, and the third punch is used to produce two front floors using a single roll of blank.

[0014] Further, the outside of the locking rib is provided with a positioning plate located on the pressure pad, and the positioning plate can move along the extension direction of the locking rib in the step direction and is fixed relative to the pressure pad when moving to any position, and the edge of the blank is positioned in the wheelbase length change area, and the front floor comprises a first front floor with a first preset length of wheelbase, a second front floor with a second preset length of wheelbase, and a third front floor with a third preset length of wheelbase, and the position of the positioning plate in the step direction is different when producing front floors of different lengths.

[0015] Further, the first preset length is greater than the third preset length and the second preset length, the third preset length is greater than the second preset length, and the length of the conformal region of the first front floor is greater than the length of the conformal region of the third front floor, and the length of the conformal region of the second front floor.

[0016] The mold capable of machining front floor with different wheelbase of the present application realizes mold sharing of front floor parts with different wheelbase but same cross section of conformal area under the premise of ensuring product quality and not wasting raw materials. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The schematic diagram of the mold capable of machining front floor with different wheelbase provided by the present application.

[0018] Figure 2 The schematic diagram of the front floor in the present application.

[0019] Figure 3 The A-A sectional view of the rear reinforcing rib in the present application.

[0020] Figure 4 The schematic diagram of the first punch and the second punch in the present application.

[0021] Figure 5 The schematic diagram of the third punch in the present application. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present application to achieve the predetermined purposes, the present application is described in detail below in combination with the drawings and preferred embodiments.

[0023] The terms "first", "second", "third", "fourth" and the like in the specification and claims 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.

[0024] In the specification and claims of the present application, the step distance direction is the direction in which the blank roll is unrolled during process execution and the length direction of the blank, and at the same time, it is also the length direction of the front floor 1; the roll width direction is the width direction of the blank, and at the same time, it is also the width direction of the front floor 1.

[0025] Please refer to Figure 1 The mold capable of machining front floor with different wheelbase of the present application, hereinafter referred to as the mold, includes head punch 3 and tail punch 4 for open drawing and locking rib 2 for closed drawing, head punch 3 and tail punch 4 are respectively used to make the front and rear parts of front floor 1 by open drawing in the step distance direction, and locking rib 2 is used to make the left and right sides of front floor 1 by closed drawing in the step distance direction.

[0026] Please refer to Figure 2, specifically, the mold of the present application is used to process front floors 1 of different wheelbase vehicles, and to achieve the processing of front floors 1 of different wheelbase vehicles, a conformal region for absorbing the wheelbase change of the front floor 1 is designed for the front floor 1, and correspondingly, a wheelbase length change area 1a for processing the conformal region is arranged on the mold. For front floors 1 of different wheelbase vehicles, the cross-sectional shape of the conformal region is completely the same, and the design of other regions except the conformal region thereon can be completely the same, so as to achieve the purpose of common mold production. It is easy to understand that the conformal region is arranged at the rear part of the front floor 1, on the one hand, the area of the front floor 1 does not need to be provided with complex structure, on the other hand, the rear part of the front floor 1 is easy to use the open draw process in production. The shape of the cross section obtained by cutting the rear part of the front floor 1 of the present application at any position in the step direction by a plane parallel to the roll width direction is the same, so that the mold of the present application can be used to produce a plurality of front floors 1 with a wheelbase difference less than or equal to the length of the conformal region. In order to avoid the risk of insufficient plastic deformation and wrinkles caused by the open draw process, the left and right sides of the front floor 1 are made by using the closed draw process, and the locking rib 2 arranged on both sides of the mold can control the material flow, ensure that the material is fully plastic deformed in the forming process, and avoid the influence of the rigidity of the part caused by the open draw process. In the embodiment, the initial position of the blank of the front part of the front floor 1 is located on the head punch 3, the initial position of the blank of the conformal region is located on the tail punch 4, and the initial position of the edge of the left and right sides of the front floor 1 is located on the blank holder 5.

[0027] Further, the mold of the present application further comprises a blank holder 5 and a positioning plate 6, the blank holder 5 is used to control the material flow, and the positioning plate 6 is arranged on the blank holder 5 in the roll width direction and located outside the locking rib 2, the blank line 9 is located inside the positioning plate 6, the positioning plate 6 can move along the extension direction of the locking rib 2 in the step direction and is fixed relative to the blank holder 5 when moving to any position, and the edge of the blank is positioned in the wheelbase length change area 1a. Specifically, by adjusting the uncoiling step, the length of the blank used for the front floor 1 can be adjusted, and by fixing the positioning plate 6 at a specified position, different lengths of the blank can be positioned on the mold, so as to produce front floors 1 of different wheelbase on the same set of molds without wasting materials.

[0028] Please see Figure 3Further, the mold in the present application comprises a reinforcing rib forming part, the reinforcing rib forming part is arranged on the tail male die 4, and is used for forming the rear reinforcing ribs 1b arranged in the continuous array along the width direction of the roll at the rear part of the front floor 1, the rear reinforcing ribs 1b are arranged on the tail male die 4 and extend from the tail male die 4 to the rear end edge of the mold, the rear reinforcing ribs 1b are arranged in the continuous array along the width direction of the roll, and the length of the rear reinforcing ribs 1b in the step direction is greater than the length of the conformal region in the step direction, so that the two ends of the rear reinforcing ribs 1b extend out of the conformal region. Specifically, in one embodiment of the present application, the reinforcing rib forming part comprises adjacent and alternating reinforcing male dies and reinforcing female dies, the reinforcing male dies and the reinforcing female dies are used for forming convex ribs and concave ribs of the rear reinforcing ribs 1b, and the convex ribs and the concave ribs are connected in a curved surface. The convex ribs are formed by stamping from the first surface (for example, the lower surface) to the second surface (for example, the upper surface) of the front floor 1, the concave ribs are formed by stamping from the second surface to the first surface of the front floor 1, the convex ribs and the concave ribs are connected in a curved surface, the rear middle part of the front floor 1 is provided with the largest concave rib, the two sides of the rear middle part of the front floor 1 are symmetrically provided with the continuously arranged convex ribs and concave ribs with smaller sizes, and the bottom of the rear middle part of the front floor 1 is also provided with the continuously arranged convex ribs and concave ribs with smaller sizes. The arrangement of the dense, continuous and adjacent reinforcing ribs on the surface of the front floor 1 can ensure that the plastic deformation is sufficient during the forming process, control the occurrence of springback, and thus ensure the successful implementation of the opening drawing process and guarantee the product quality.

[0029] Please refer to Figure 4 Specifically, in the first embodiment of the present application, the mold is arranged using a double-cavity process, which comprises a first mold cavity 7 and a second mold cavity 8, the first mold cavity 7 and the second mold cavity 8 share upper and lower bottom plates, the first mold cavity 7 and the second mold cavity 8 are respectively provided with a first male die and a second male die for producing the front floor 1, the first male die and the second male die are both provided with the head male die 3, the tail male die 4, the locking rib 2 and the positioning plate 6, and the first mold cavity 7 and the second mold cavity 8 are used for producing two front floors 1 respectively using two rolls of blank.

[0030] Please refer to Figure 5 In the second embodiment of the present application, the mold is arranged using a one-mold-two-pieces process, which comprises a third male die 71, the third male die 71 comprises a first male die and a second male die connected and integrated for producing the front floor 1, and the third male die 71 is used for producing two front floors 1 using a single roll of blank. It is easy to understand that the molds in the first embodiment and the second embodiment can save 50% of the punching cost, thereby effectively reducing the production cost.

[0031] Further, the front floor 1 of different wheelbase in the application specifically includes a first front floor with a first preset wheelbase, a second front floor with a second preset wheelbase and a third front floor with a third preset wheelbase, and the first front floor, the second front floor and the third front floor can be drawn and flanged and trimmed by using the die in the application. When the front floor 1 with different lengths is produced, the position of the positioning plate 6 in the step direction is different. In the embodiment, the first preset length is greater than the third preset length which is greater than the second preset length, and the length of the conformal region of the first front floor is greater than the length of the conformal region of the third front floor which is greater than the length of the conformal region of the second front floor. When the first front floor is produced, the positioning plate 6 positions the edge of the blank on the conformal region at a position closer to the rear end, and when the second front floor is produced, the positioning plate 6 positions the edge of the blank on the conformal region at a position closer to the front end. The drawing and flanging and trimming process is first opened according to the first front floor with the longest wheelbase, and the second front floor and the third front floor with shorter wheelbases are produced by borrowing the die of the first front floor, thereby saving the materials required for four sets of large casting dies. The length of the first front floor is 1258mm, the length of the second front floor is 1138mm, and the length of the third front floor is 1223mm. The use of the die in the application for drawing and flanging and trimming can improve the utilization rate of the open drawing material by 3.15%, save 0.4kg of raw materials per vehicle, and additionally save 0.3kg of raw materials per vehicle due to the avoidance of material waste in closed drawing. In addition, the trimming and punching die of the first front floor, the second front floor and the third front floor still needs to be separately opened and adjusted in the uncoiling and shearing step distance to avoid material waste.

[0032] In summary, the die for processing front floors with different wheelbases in the application can realize the die sharing of front floor parts with different total wheelbases but the same conformal region cross section under the premise of ensuring product quality and not wasting raw materials. The application can also produce front floors through a double-cavity process or a one-die two-piece process, which optimizes mold investment, material cost, production cost and development cycle, and has excellent economic benefits.

[0033] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the application, which should be covered within the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A mold for processing different axially spaced front floors, characterized by: The die includes a head punch (3) and a tail punch (4) for forming the front and rear parts of a front floor (1) by an opening drawing process in a step direction, and a wheelbase length variation area (1a) for accommodating a length variation of the front floor (1), the wheelbase length variation area (1a) being used to form a conformal area of the front floor (1) having the same cross-sectional shape in the step direction, the conformal area being arranged at the rear part of the front floor, the die capable of processing front floors with different wheelbases further includes a plurality of reinforcement rib forming portions arranged on the tail punch (4), the reinforcement rib forming portions being used to form rear reinforcement ribs (1b) arranged continuously in a width direction at the rear part of the front floor (1), the reinforcement rib forming portions being arranged on the tail punch (4) and extending from the tail punch (4) to a rear end edge of the die, the rear reinforcement ribs (1b) having a length in the step direction greater than that of the conformal area in the step direction.

2. The mold for processing a front floor panel having different axial distances according to claim 1, wherein: The die capable of processing front floors with different wheelbases further includes a locking rib (2) for closing the drawing, the locking rib (2) being arranged on both sides of the die capable of processing front floors with different wheelbases in the step direction.

3. The mold for processing a different-diaxial front floor according to claim 2, wherein: The die capable of processing front floors with different wheelbases further includes a blank holder (5) for controlling material flow, the initial positions of the blank for the left and right side edges of the front floor (1) being located on the blank holder (5).

4. The mold for processing a different-diaxial front floor according to claim 3, wherein: The initial position of the blank for the front part of the front floor (1) is located on the head punch (3), and the initial position of the blank for the rear part of the front floor (1) is located on the tail punch (4).

5. The mold capable of processing different axially spaced front floors as recited in claim 1, wherein: The reinforcement rib forming portions include adjacent and alternating reinforcement punches and reinforcement recesses for forming convex ribs and concave ribs of the rear reinforcement ribs (1b), the convex ribs and the concave ribs being connected by a curved surface.

6. The mold capable of processing different axially spaced front floors of claim 1, wherein: The die includes a first die cavity (7) and a second die cavity (8) sharing an upper and lower bottom plate, the first die cavity (7) and the second die cavity (8) respectively having a first punch and a second punch separated from each other for producing the front floor (1), the first die cavity (7) and the second die cavity (8) being used to produce two front floors (1) using two rolls of blank.

7. The mold capable of processing different wheelbase front floor panels of claim 1, wherein: The die includes a third punch (71) including a first punch and a second punch connected integrally for producing the front floor (1), the third punch (71) being used to produce two front floors (1) using a single roll of blank.

8. The mold for processing a different-diaxial front floor according to claim 3, wherein: The locking rib (2) is provided with a positioning plate (6) on the outer side of the blank holder (5), the positioning plate (6) can move along the extension direction of the locking rib (2) in the step direction and is fixed relative to the blank holder (5) when moving to any position, the edge of the blank is positioned in the wheelbase length change area (1a), the front floor (1) includes a first front floor with a first preset wheelbase length, a second front floor with a second preset wheelbase length and a third front floor with a third preset wheelbase length, when producing front floors (1) with different lengths, the position of the positioning plate (6) in the step direction is different.

9. The mold capable of processing front floors with different wheelbases as claimed in claim 8, characterized in that: The first preset length is greater than the third preset length and the second preset length, the third preset length is greater than the second preset length, the length of the conformal area of the first front floor is greater than the length of the conformal area of the third front floor, and the length of the conformal area of the third front floor is greater than the length of the conformal area of the second front floor.

Images