Punching die for multiple holes in lateral space angle in heat shield production

Abstract

The utility model discloses a punching die for a plurality of lateral space angle holes in heat shield production. The punching die comprises an upper die structure and a lower die structure. The die is characterized in that the upper die structure comprises an upper clamping plate, an upper material pressing body, a wedge and a guide column are arranged on the upper clamping plate, and the upper material pressing body and the guide column are in interference fit in the upper clamping plate; an upper die holder is arranged above the upper clamping plate; the lower die structure comprises a lower clamping plate, a lower die base is arranged below the lower clamping plate, and guide column holes are formed in the lower clamping plate. A fixed male die is arranged above the lower clamping plate and provided with a first steel hole, a second steel hole and a material leakage hole. A heat shield is placed on the fixed male die; an inclined punching punch top block structure device is additionally arranged in a lateral punching mechanism unit, the limitation that one lateral punching mechanism unit can only punch one side face hole is overcome, and meanwhile the problem that multiple working procedures are needed for punching due to the fact that the distance between a plurality of side face holes is short and the material pressing space is insufficient is solved. The die is simple in structure and easy to machine, and product quality and production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold stamping die technical field, specifically is a kind of punching die for multiple holes of lateral space angle in heat shield production. BACKGROUND

[0002] In modern manufacturing industry, as an important tool, the design and application of die directly affect the quality and production efficiency of product. Especially in the field of automobile parts processing, the application of punching die is very wide. With the development of automobile technology, the functional and compact requirements of engine heat shield are improved, to meet the installation of heat shield itself, the protection function of other parts of engine, also to meet the riveting of other accessory parts on the side of heat shield to meet the design and application requirements of engine;The consistency, uniformity and stability of heat shield processing and manufacturing quality are improved to ensure reliability and safety. The traditional hole punching die cannot meet the market demand.

[0003] At present, the conventional engine heat shield side punching die, different angle holes, each side punching mechanism can only punch one hole on the side of heat shield;The basic principles of side punching die design and application are as follows: 1, the direction of punch blanking is perpendicular to the side hole of heat shield;2, the hole around heat shield position is pressed before punching blanking work;Heat shield side riveting accessory parts need to punch multiple accessory part mounting holes with close distance and high relative position degree on the side of heat shield, the side of heat shield is curved surface shape, the center axis of mounting hole is normal to the curved surface, and the center axis of heat shield mounting hole is relative to the process coordinate system of heat shield space angle;The existing die structure process can only punch one hole in one process, and the part needs to be processed in multiple processes, so as to increase the error caused by multiple positioning, reduce the relative position degree precision of hole;The existing die process has low production efficiency, low product precision, high scrap rate and high product cost. SUMMARY

[0004] The utility model aims at overcoming the deficiency of prior art, and provides a kind of punching die for multiple holes of lateral space angle in heat shield production.

[0005] The technical scheme provided by the utility model is: a kind of punching die for multiple holes of lateral space angle in heat shield production, including upper die structure and lower die structure;Its special feature is that the upper die structure includes upper clamping plate, and the upper clamping plate is equipped with upper guide column, inclined wedge and upper material pressing body, and the guide column and the upper material pressing body are respectively fitted in the upper clamping plate;Upper die holder is arranged above the upper clamping plate;

[0006] The lower die structure comprises a lower clamping plate, a lower die base arranged below the lower clamping plate, and a guide column hole arranged on the lower clamping plate; a fixed convex die is arranged above the lower clamping plate, the fixed convex die is provided with a first steel eye, a second steel eye and a material leakage hole, the first steel eye, the second steel eye and the material leakage hole are communicated with each other, and a heat shield is arranged on the fixed convex die;

[0007] A stop block is arranged on the lower clamping plate, a pull rod is arranged on the stop block, a fifth spring is arranged on the pull rod, the pull rod is threadedly fixed on an inclined sliding block through the stop block; first and second fixed blocks are arranged on the two sides of the inclined sliding block, and the inclined sliding block reciprocally slides between the first and second fixed blocks; a lateral clamping plate is arranged on the inclined sliding block, and first and second punch top blocks are arranged on the lateral clamping plate; the first punch top block has a first space surface perpendicular to a first punch, and the second punch top block has a second space surface perpendicular to a second punch; first and second lateral guide columns are arranged on the lateral clamping plate; first and second springs are arranged on the first and second lateral guide columns respectively; lateral pressing blocks are fixed on the first and second lateral guide columns; first and second punches are arranged on the lateral pressing blocks; third and fourth springs are arranged on the first and second punches respectively, and first and second semicircular heads are arranged at the ends of the first and second punches respectively; a limiting pin is arranged on the lower clamping plate.

[0008] Further, mounting holes are arranged on the lateral clamping plate, and the first and second punch top blocks are arranged in the mounting holes in an interference fit.

[0009] Further, first and second guide holes are arranged on the lateral clamping plate, and the first and second lateral guide columns are arranged in the first and second guide holes in a clearance fit.

[0010] Further, first and second punch fixing holes are arranged on the lateral pressing blocks, and the first and second punches are arranged in the first and second punch fixing holes respectively.

[0011] Further, the lateral pressing blocks and the fixed convex die cooperate to position and fix the heat shield between the lateral pressing blocks and the fixed convex die.

[0012] Further, the first and second semicircular heads of the first and second punches respectively contact and slide on the first and second space surfaces.

[0013] The utility model discloses the beneficial effects of:

[0014] 1. The punch die with multiple holes in lateral space angle, the inclined punch head top block structure device is added in the lateral punch mechanism unit, the demand that one lateral punch mechanism unit can punch multiple holes in space angle is met, and the limitation that one lateral punch mechanism unit can only punch one side hole is solved;

[0015] 2. The punch die with multiple holes in lateral space angle solves the problem of insufficient pressing space due to the close distance of multiple side holes, and the multiple step process punching problem is solved;

[0016] 3. The die structure is simple and easy to process, the multiple holes in lateral space angle are completed once, the number of dies and the number of processing procedures are reduced, the consistency, uniformity and stability of product quality are improved, the design application requirement and processing precision are ensured, the cost is low, and the production efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the closed die state structure schematic diagram of the utility model;

[0018] Figure 2 is the open die state structure schematic diagram of the utility model;

[0019] Figure 3 is the blanking cross section structure schematic diagram of the utility model;

[0020] Figure 4 is the die processing heat shield structure schematic diagram of the utility model.

[0021] In the drawing: 1, upper die holder, 2, upper clamping plate, 3, guide column, 4, inclined wedge, 5, upper pressing body, 10, lower die holder, 11, lower clamping plate, 12, guide column hole, 13, fixed punch, 14, leakage hole, 15, first steel eye, 16, second steel eye, 20, heat shield, 21, first heat shield side hole, 22, second heat shield side hole, 30, pull rod, 31, fifth spring, 32, stop block, 33, first fixed block, 34, second fixed block, 35, limit pin, 36, inclined sliding block, 37, first punch top block, 38, second punch top block, 39, mounting hole, 40, lateral clamping plate, 41, first space surface, 42, second space surface, 43, second guide hole, 44, first guide hole, 45, first spring, 46, second lateral guide column, 47, second spring, 48, second lateral guide column, 49, second half round head, 50, fourth spring, 51, second punch, 52, first half round head, 53, third spring, 54, first punch, 55, lateral pressing block, 56, first punch fixing hole, 57, second punch fixing hole. DETAILED DESCRIPTION

[0022] In order to better understand and implement, the utility model is described in detail below in conjunction with the drawings.

[0023] As Figure 4 shown, taking the first heat shield side hole 21 and the second heat shield side hole 22 on the processed heat shield 20 as an example, the two holes are on the side surface curve of the heat shield, the distance between the two holes is small, and the axis of the two holes is in a spatial direction relative to the upper surface of the heat shield; the center lines of the first heat shield side hole 21 and the second heat shield side hole 22 are in different directions; a conventional side punch die structure unit cannot simultaneously process two holes with different angles; if two side punch die structure units are designed in the same die to simultaneously punch and process, the material pressing space is insufficient, and the requirement cannot be met.

[0024] As Figure 1 , 2 , 3 shows a punching die for multiple holes with different space angles in the production of heat shields, comprising an upper die structure and a lower die structure.

[0025] The upper die structure comprises an upper clamping plate 2, a screw is used to fix an upper material pressing body 5 on the upper clamping plate 2, a guide column 3, a cam 4 and the upper material pressing body 5 on the upper clamping plate 2 are respectively fitted in the mounting holes of the upper clamping plate 2; the upper material pressing body 5 is made of elastic material, so that the profile fully adheres to ensure reliable material pressing; a screw is used to fix an upper die seat 1 above the upper clamping plate 2.

[0026] The lower die structure comprises a lower clamping plate 11, which is fixed with a lower die seat 10 below; a guide column hole 12 is formed in the lower clamping plate 11, which is in clearance fit with the guide column 3 during die working; a fixed punch 13 is fixed above the lower clamping plate 11; the fixed punch 13 has a first steel eye 15, a second steel eye 16 and a material leakage hole 14, the first steel eye 15 and the second steel eye 16 are communicated with the material leakage hole 14; the first steel eye 15 and the second steel eye 16 are made of Cr12Mov die steel HRC59° heat treated, and the surface is treated with titanium plating to increase wear resistance; the heat shield 20 is placed on the fixed punch 13 for positioning the heat shield 20.

[0027] The block 32 is fixed on the lower clamp plate 11 to eliminate the lateral force of the wedge 4. The block 32 is in clearance fit with the pull rod 30, the fifth spring 31 is installed on the pull rod 30, the pull rod 30 is fixed on the inclined sliding block 36 for the return of the inclined sliding block 36, the inclined sliding block 36 is in clearance fit with the first fixed block 33 and the second fixed block 34 on both sides, and the inclined sliding block 36 reciprocates between the first fixed block 33 and the second fixed block 34. The lateral clamp plate 40 is fixed on the inclined sliding block 36, the mounting hole 39 is provided on the lateral clamp plate 40, the first punch block 37 and the second punch block 38 are respectively in interference fit in the mounting hole 39, the first punch block 37 has the first space surface 41 perpendicular to the first punch 54, the second punch block 38 has the second space surface 42 perpendicular to the second punch 51, the surfaces are treated by titanium plating to increase wear resistance, the first guide hole 44 and the second guide hole 43 are provided on the lateral clamp plate 40, the first lateral guide column 46 and the second lateral guide column 48 are respectively in clearance fit in the first guide hole 44 and the second guide hole 43, the first spring 45 and the second spring 47 are respectively installed on the first lateral guide column 46 and the second lateral guide column 48, the first spring 45 and the second spring 47 are used to move the lateral pressure block 57 transversely under the action of the first spring 45 and the second spring 47 during the upward movement of the upper die after the punching of the heat shield is completed, so that the first punch 54 and the second punch 51 are separated from the heat shield 20, the lateral pressure block 55 is fixed on the first lateral guide column 46 and the second lateral guide column 48 by threads, the first punch fixing hole 56 and the second punch fixing hole 57 are provided on the lateral pressure block 55, the first punch 54 and the second punch 51 are respectively installed in the first punch fixing hole 56 and the second punch fixing hole 57, the third spring 53 and the fourth spring 50 are respectively installed on the first punch 54 and the second punch 51 to ensure that the lateral pressure block 55 reliably presses the material during the punching process, and the limit pin 35 is installed on the lower clamp plate 11 to limit the stroke of the inclined sliding block 36.

[0028] The lateral pressure block 55 is in cooperation with the fixed convex die 13 to position and fix the heat shield 20 between the lateral pressure block 55 and the fixed convex die 13, the first semicircular head 52 and the second semicircular head 49 on the first punch 54 and the second punch 51 are respectively in contact with the first space surface 41 and the second space surface 42 and slide on the space surfaces.

[0029] The punching die structure is suitable for various heat shield structures, such as single-layer, double-layer or three-layer structures.

[0030] The utility model discloses a punch die for lateral space angle multiple holes in heat shield production, when working: the upper die goes down, and heat shield 20 is positioned and fixed between lateral pressure piece 55 and fixed convex die 13, under the pressure of the upper die going down, inclined wedge 4 laterally pushes inclined sliding block 36, and lateral clamping plate 40, first punch top block 37, second punch top block 38, lateral pressure piece 55, synchronous lateral sliding, first spring 45, second spring 47, third spring 53, fourth spring 50, fifth spring 31 synchronous compression, first punch top block 37, second punch top block 38 respectively push first punch 54, second punch 51 work, respectively enter first steel eye 15, second steel eye 16 through heat shield 20, and first heat shield side hole 21, second heat shield side hole 22 are processed; the upper die goes down to the limit position and then rises, and heat shield 20 is separated from first punch 54, second punch 51 under the action of lateral pressure piece 55, and lateral clamping plate 40, first punch top block 37, second punch top block 38, lateral pressure piece 57 move laterally and return to the design position under the action of spring and stop, and the upper die continues to rise to the upper limit position, and completes a punch working cycle.

[0031] 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, and 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, and these all belong to the protection scope of the utility model.

Claims

1. A punching die for punching multiple holes at lateral spatial angles in the production of heat shields, comprising an upper die structure and a lower die structure; characterized in that: The upper die structure comprises an upper clamping plate (2), on which a guide column (3), an inclined wedge (4) and an upper pressing body (5) are provided, wherein the guide column (3) and the upper pressing body (5) are respectively interference-fitted in the upper clamping plate (2); an upper die base (1) is provided above the upper clamping plate (2); The lower die structure comprises a lower clamping plate (11), a lower die base (10) is provided below the lower clamping plate (11), and a guide post hole (12) is provided on the lower clamping plate (11); a fixed punch (13) is provided above the lower clamping plate (11), and the fixed punch (13) is provided with a first steel eye (15), a second steel eye (16) and a material leakage hole (14), and the first steel eye (15), the second steel eye (16) and the material leakage hole (14) are in communication; and a heat shield (20) is placed on the fixed punch (13); A stopper (32) is provided on the lower clamping plate (11), a pull rod (30) is provided on the stopper (32), a fifth spring (31) is provided on the pull rod (30), and the pull rod (30) passes through the stopper (32) and is threadedly fixed on the inclined slider (36); a first fixed block (33) and a second fixed block (34) are provided on both sides of the inclined slider (36), and the inclined slider (36) slides back and forth between the first fixed block (33) and the second fixed block (34); a lateral clamping plate (40) is provided on the inclined slider (36), and a first punch top block (37) and a second punch top block (38) are provided on the lateral clamping plate (40); the first punch top block (37) has a first spatial surface (41) perpendicular to the first punch (54), and the second punch top block (38) has a vertical A second spatial surface (42) perpendicular to the second punch (51); a first lateral guide column (46) and a second lateral guide column (48) are provided on the lateral clamping plate (40); a first spring (45) and a second spring (47) are provided on the first lateral guide column (46) and the second lateral guide column (48); a lateral pressing block (55) is fixed on the first lateral guide column (46) and the second lateral guide column (48); a first punch (54) and a second punch (51) are provided on the lateral pressing block (55); a third spring (53) and a fourth spring (50) are provided on the first punch (54) and the second punch (51), and a first semicircular head (52) and a second semicircular head (49) are provided on the ends thereof; a limit pin (35) is provided on the lower clamping plate (11).

2. A punching die for punching multiple holes at lateral spatial angles in the production of heat shields according to claim 1, characterized in that: The lateral clamping plate (40) is provided with a mounting hole (39), and a first punch top block (37) and a second punch top block (38) are provided in the mounting hole (39). The first punch top block (37) and the second punch top block (38) are respectively interference-fitted in the mounting hole (39).

3. A punching die for punching multiple holes at lateral spatial angles in the production of heat shields according to claim 1, characterized in that: The lateral clamping plate (40) is provided with a first guide hole (44) and a second guide hole (43), and a first lateral guide column (46) and a second lateral guide column (48) are respectively provided in the first guide hole (44) and the second guide hole (43), and the first lateral guide column (46) and the second lateral guide column (48) are loosely fitted in the first guide hole (44) and the second guide hole (43).

4. A punching die for punching multiple holes at lateral spatial angles in the production of heat shields according to claim 1, characterized in that: A first punch fixing hole (56) and a second punch fixing hole (57) are provided on the lateral pressing block (55), and a first punch (54) and a second punch (51) are respectively provided in the first punch fixing hole (56) and the second punch fixing hole (57).

5. The punching die for punching multiple holes at lateral spatial angles in the production of heat shields according to claim 1, characterized in that: The lateral pressing block (55) cooperates with the fixed punch (13) to position and fix the heat shield (20) between the lateral pressing block (55) and the fixed punch (13).

6. A punching die for punching multiple holes at lateral spatial angles in the production of heat shields according to claim 1, characterized in that: The first punch (54), the first semicircular head (52), and the second semicircular head (49) of the second punch (51) are in contact with the first spatial surface (41) and the second spatial surface (42), respectively, and slide on the spatial surfaces.

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