Drawing, trimming and flanging composite die
By designing a composite mold with integrated drawing, trimming and flanging functions, the problems of poor quality and low efficiency caused by the separation of multiple processes in the production of engine heat shields were solved, achieving efficient production and cost reduction.
Patent Information
- Application Number
- CN202422812301.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In the prior art, the production process of the engine heat shield is multiple and separate, resulting in problems such as poor product quality, high cost and low production efficiency.
A drawing, trimming and flanging composite die is designed, which integrates the functions of drawing, trimming and flanging. Through the cooperation of the upper and lower die structures, multiple processes can be completed in one die.
Improve product quality and consistency, reduce mold development costs, shorten production cycles, and improve production efficiency.
Smart Images
Figure CN223440879U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cold stamping die technical field, specifically is a compound die of drawing trimming and flanging, and is mainly used for drawing trimming and flanging in heat shield production. BACKGROUND
[0002] The position of the die in the manufacturing industry is very important, and the die is praised as "the mother of manufacturing", and the process and manufacturing of the die directly affect the quality and efficiency of products. With the development of the automobile industry, market trend demand, higher requirements are put forward for product quality improvement, production efficiency improvement and product cost control. The heat shield is an important protective product of the engine; at present, the conventional engine heat shield die process technology is (as shown in Figure 3 ): drawing 16→ trimming 17→ flanging 18→ crimping 19→ pressing 20, five processes are completed, each process corresponds to a set of die, and the following disadvantages exist: 1) poor product quality: when the multiple process dies are operated separately, the conversion between workpiece processes and the repositioning of the workpiece will introduce certain errors, and these errors will have a great influence on the final quality of the product after being accumulated in multiple processes; 2) high cost: the development of a single drawing, trimming and flanging die needs to be designed, manufactured and debugged respectively, and involves the development cost of multiple dies; 3) low production efficiency: in the production process, when the separate drawing, trimming and flanging dies are used, each process needs to be completed separately, and the process involves die disassembly, installation and debugging, which consumes a lot of time. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at overcoming the deficiencies of the prior art, and provides a drawing trimming and flanging compound die.
[0004] The technical scheme provided by the utility model is as follows: a drawing trimming and flanging compound die, comprising an upper die structure and a lower die structure; the special feature is that the upper die structure comprises a female die, an upper backing plate is arranged above the female die, a punch flanging hole is arranged in the female die, a pressing block is arranged in the accommodation cavity of the female die, and the pressing block is gap-fitted with the female die; the pressing block slides up and down in the accommodation cavity;
[0005] The lower die structure comprises a lower clamping plate, a lower backing plate is arranged below the lower clamping plate, and a pressure ring is arranged above the lower clamping plate; a male die is arranged between the lower clamping plate and the pressure ring, and a punch flanging block is arranged on the side of the lower clamping plate and the pressure ring; the number of punch flanging blocks is matched with that of punch flanging holes, and the positions are corresponding.
[0006] Further, a first male die mounting hole is arranged in the middle of the lower clamping plate, a first punch flanging block mounting hole is arranged on the side, a second male die mounting hole is arranged in the middle of the pressure ring, and a second punch flanging block mounting hole is arranged on the side; male dies are arranged in the first male die mounting hole and the second male die mounting hole, and punch flanging blocks are arranged in the first punch flanging block mounting hole and the second punch flanging block mounting hole.
[0007] Further, the blank holder ring cooperates with the female die, the male die cooperates with the female die to form and position the heat shield, and the heat shield is fixed between the male die and the female die.
[0008] The present application has the following beneficial effects:
[0009] 1. Improved product quality: The drawing, trimming and flanging combined die completes multiple processes in one die, reduces the conversion between processes, thereby reducing error accumulation and avoiding the generation of secondary positioning errors, which helps to improve product consistency and quality, and improves product size accuracy and quality stability.
[0010] 2. Reduced cost: The drawing, trimming and flanging combined die only needs to develop a set of dies, reducing the design and manufacturing workload of the dies and reducing the die development cost.
[0011] 3. Improved production efficiency: The replacement of the dies and the transfer time between processes are reduced, making the entire production process more compact and efficient; the drawing, trimming and flanging processes can be completed in one stamping process, and compared with the independent dies for the three processes, the production cycle is greatly shortened. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a closed die state structure schematic diagram of the present application;
[0013] Figure 2 is a die opening state structure schematic diagram of the present application;
[0014] Figure 3 is a schematic diagram of the existing processing process;
[0015] Figure 4 is a schematic diagram of the processing process of the present application.
[0016] In the figure: 1, upper pad plate, 2, female die, 3, heat shield, 4, blank holder ring, 5, lower clamping plate, 6, punching and turning block, 7, lower pad plate, 8, male die, 9, first male die mounting hole, 10, first punching and turning block mounting hole, 11, second male die mounting hole, 12, second punching and turning block mounting hole, 13, punching and turning hole, 14, pressing block, 15, accommodating cavity, 16, drawing, 17, trimming, 18, flanging, 19, edge rolling, 20, pressing, 21, drawing, trimming and flanging, 22, edge material. DETAILED DESCRIPTION
[0017] In order to better understand and implement, the present application will be described in detail below with reference to the accompanying drawings.
[0018] As Figure 1 , 2As shown, a combined die for drawing, trimming and flanging includes an upper die structure and a lower die structure.
[0019] The upper die structure includes a female die 2, above which is fixed an upper backing plate 1 by screws, the female die 2 is made of YXr33 high-speed steel, having high hardness, wear resistance and thermal hardness, and being able to withstand increased pressure and friction, a punch flanging hole 13 is formed in the female die 2, and the compensation angle of the punch flanging hole 13 can be adjusted according to the flanging springback of the heat shield; a pressure block 14 is installed in a receiving cavity 15 of the female die 2, and the two are gap fitted; the pressure block 14 slides up and down in the receiving cavity 15 under the action of the spring force, and plays a pressure function in the drawing process, and plays a material removal function in the opening process of the flanging die;
[0020] The lower die structure includes a lower clamping plate 5, which is fixed with a lower backing plate 7 below; a first punch installation hole 9 and a first punch flanging block installation hole 10 are formed on the lower clamping plate 5, the punch flanging block 6 is interference fitted with the first punch flanging block installation hole 10, the punch flanging block 6 is made of SKD11 high-strength die steel, and the punch 8 is gap fitted with the first punch installation hole 9; a blank holder 4 is provided above the lower clamping plate 5, a second punch installation hole 11 and a second punch flanging block installation hole 12 are formed on the blank holder 4, the punch flanging block 6 is gap fitted with the second punch flanging block installation hole 12, and the punch 8 is gap fitted with the second punch installation hole 11; the punch flanging block 6 is matched in number and corresponding in position with the punch flanging hole 13; the blank holder 4 is matched with the female die 2, and the heat shield 3 is formed, positioned and fixed between the punch 8 and the female die 2 under the action of the punch 8.
[0021] The die structure for drawing, trimming and flanging is suitable for various heat shield structures, such as single-layer structure or multi-layer outer plate.
[0022] As shown in the drawing, Figure 4 The process scheme for using the die for drawing, trimming and flanging is as follows: drawing, trimming and flanging 21→ crimping 19→ pressing 20, three processes are completed, and each process corresponds to a set of dies.
[0023] The utility model discloses a draw trimming and flanging combined die, when working: the plate blank positioning and fixed between the edge ring 4 and the female die 2 of the upper die downstroke, the edge ring 4 is synchronous downstroke under the pressure of the upper die downstroke, the material block 14 is synchronous upstroke under the pressure of the upper die downstroke, the male die 8 works into the female plate blank plastic deformation and obtains the design heat shield shape, the male die 8, female die 2, heat shield 3 complete contact, the upper die closed mould, the upper die continues downstroke, the male die 8, edge ring 4 synchronous downstroke, the punch and overturning block 6 work punch and cut heat shield edge material 22, punch and overturning block 6 enter punch and overturning hole 13, and heat shield 3 flanging is completed, the upper die downstroke reaches the extreme position and then rises, the male die 8, edge ring 4 and the upper die synchronous upstroke, and heat shield 3 separates from punch and overturning hole 13, female die 2 under the action of material block 14, the male die 8, edge ring 4 rises to the design position and stops rising, and the upper die continues to rise to the upper limit position, and completes a punch working cycle.
[0024] It should be understood that the technical features not elaborated in the specification are all prior art. Although the embodiments of the utility model patent are described above in combination with the drawings, the utility model is not limited to the above specific embodiments, and the above specific embodiments are only illustrative and not restrictive. Those skilled in the art can make more forms under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims.
Claims
1. A drawing, trimming and flanging composite die, comprising an upper die structure and a lower die structure; characterized in that: The upper die structure comprises a die (2), an upper pad (1) is provided above the die (2), a punching hole (13) is provided in the die (2), and a pressing block (14) is provided in the receiving cavity (15) of the die (2), and the two are clearance-matched; the pressing block (14) slides up and down in the receiving cavity (15); The lower die structure comprises a lower clamping plate (5), a lower pad (7) is provided under the lower clamping plate (5), and a pressure ring (4) is provided above the lower clamping plate (5); a punch (8) is provided between the lower clamping plate (5) and the pressure ring (4), and a punching block (6) is provided on the edge of the lower clamping plate (5) and the pressure ring (4); the punching blocks (6) match the punching holes (13) in number and have corresponding positions.
2. The drawing, trimming and flanging composite die according to claim 1, characterized in that: A first punch mounting hole (9) is provided in the middle of the lower clamping plate (5), and a first punching block mounting hole (10) is provided on the edge; a second punch mounting hole (11) is provided in the middle of the pressure ring (4), and a second punching block mounting hole (12) is provided on the edge; a punch (8) is provided in the first punch mounting hole (9) and the second punch mounting hole (11), and a punching block (6) is provided in the first punching block mounting hole (10) and the second punching block mounting hole (12).
3. The drawing, trimming and flanging composite die according to claim 1, characterized in that: The pressure ring (4) cooperates with the die (2), and the heat insulation cover (3) is formed and positioned between the punch (8) and the die (2), and the heat insulation cover (3) is fixed between the punch (8) and the die (2).