Die assembly shared by drawing and flanging

Abstract

The utility model provides a die assembly shared by drawing and flanging, and belongs to the technical field of vehicle production equipment. The drawing and flanging common die assembly comprises a female die assembly and a male die, the female die assembly comprises a female die, a female die insert and a flanging cutter block, a first groove is formed in the female die, the female die insert and the flanging cutter block are both installed in the first groove, and the male die and the female die assembly are oppositely arranged and used for being in detachable abutting connection with the female die assembly. A second groove is formed in the position, corresponding to the flanging cutter block, of the convex face of the male die, a gap is formed between the female die insert and the side wall of the first groove, the flanging cutter block can move between a first position and a second position in a switching mode, the first position of the flanging cutter block is located in the gap, and the second position of the flanging cutter block stretches out of the gap and stretches into the second groove.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle production equipment, in particular to a drawing and flanging common die assembly. Background Art

[0002] At present, for parts that need flanging, such as hood outer panels and door outer panels, two sets of molds need to be developed in small batch production, one set of drawing molds and the other set of flanging molds. This has the problem of high mold development costs and occupied site space. In addition, since the existing drawing and flanging are not on the same surface, there is a problem of inconsistency between the shapes of the previous and subsequent processes. Utility Model Content

[0003] The utility model aims to provide a common die assembly for drawing and flanging, which realizes that drawing and flanging share a set of die assemblies, and drawing and flanging share the same molding surface.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] According to one aspect of the utility model, a common die assembly for drawing and flanging is provided, comprising a die assembly and a punch, the die assembly comprising a die, a die insert and a flanging knife block, the die is provided with a first groove, the die insert and the flanging knife block are both installed in the first groove, the punch is arranged relative to the die assembly for releasable abutment with the die assembly, the convex surface of the punch is provided with a second groove corresponding to the flanging knife block, wherein a gap is provided between the die insert and the side wall of the first groove, the flanging knife block can switch between a first position and a second position, the first position of the flanging knife block is located in the gap, and the second position of the flanging knife block extends out of the gap and extends into the second groove.

[0006] According to one embodiment of the utility model, a first step is provided at one end of the die insert, and a second step is provided at one end of the flanging knife block. The second step can move between the first step and the bottom wall of the first groove. When the flanging knife block is in the first position, the second step abuts against the bottom wall of the first groove. When the flanging knife block is in the second position, the second step abuts against the first step.

[0007] According to one embodiment of the utility model, the flanging blade block is in any one of the shapes of annular, C-shaped, L-shaped, and straight, and the second groove, the gap, the first step, and the second step are all adapted to the shape of the flanging blade block.

[0008] According to one embodiment of the utility model, the cross section of the die insert is in a "convex" shape, and the cross section of the flanging blade block is in a "7" shape.

[0009] According to one embodiment of the utility model, it also includes a blank holder ring, which is sleeved outside the punch, and the blank holder ring and the punch are jointly in contact with the die assembly to draw the workpiece.

[0010] According to one embodiment of the utility model, when the flanging knife block is in the first position, one end of the flanging knife block is fixed on the bottom wall of the die, and the blade portion of the other end of the flanging knife block is flush with the surface of the die insert.

[0011] According to an embodiment of the present invention, the die assembly is located above the punch, and the die assembly and the punch are configured to draw the workpiece together.

[0012] According to one embodiment of the utility model, the die assembly further includes a plurality of first bolts and a plurality of second bolts. When the flanging knife block is in the first position, one end of the flanging knife block is fixed to the bottom wall of the first groove by the first bolt, and one end of the die insert is fixed to the bottom wall of the first groove by the second bolt.

[0013] According to an embodiment of the utility model, the flanging tool block is movably installed in the gap, and when flanging the workpiece, the flanging tool block is driven from the first position to the second position by an external force.

[0014] According to one embodiment of the utility model, the female mold assembly is located below the male mold.

[0015] An embodiment of the present invention has the following advantages or beneficial effects:

[0016] The utility model discloses a common die assembly for drawing and flanging, comprising a die assembly and a punch, wherein the die assembly comprises a die, a die insert and a flanging knife block, the die is provided with a first groove, the die insert is installed in the groove, a gap is provided between the die insert and the side wall of the first groove, the punch is arranged relative to the die assembly and is used for releasably abutting with the die assembly, a second groove is provided on the convex surface of the punch corresponding to the flanging knife block, wherein the flanging knife block is installed in the gap, and the flanging knife block can switch between a first position and a second position, the first position of the flanging knife block is located in the gap, and the second position of the flanging knife block extends out of the gap and extends into the second groove. The common die assembly for drawing and flanging of the embodiment of the utility model is installed on a press device. When drawing the sheet metal, the flanging knife block is first locked in the first position; the press device drives the punch and / or die assembly to separate the punch and die assemblies; the sheet metal is placed between the punch and die assemblies; the press device drives the punch and die assemblies to move toward each other, so that the punch and die assemblies jointly extrude and draw the sheet metal.

[0017] When flanging the sheet, release the lock on the flanging knife block; swap the positions of the punch and die assembly on the press equipment, and make the push rod of the press equipment abut against the flanging knife block; place the sheet between the punch and die assembly; the press equipment drives the punch and / or die assembly to move, so that the punch and die assembly extrude the sheet together, and at the same time, the press equipment drives the push rod to move, and the push rod drives the flanging knife block to move to the second position, and the blade of the flanging knife block presses the corresponding part of the sheet into the second groove to flanging the sheet, thereby realizing a set of mold assemblies for drawing and flanging, thereby reducing mold costs and occupied space. Since drawing and flanging share the same molding surface, the risk of part deformation caused by inconsistent molds in the previous and next processes is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0019] Figure 1 is a cross-sectional view of a common die assembly for drawing and flanging in a drawing state according to an exemplary embodiment.

[0020] Figure 2 is a cross-sectional view of a common die assembly for drawing and flanging in a flanging state according to an exemplary embodiment.

[0021] Figure 3 yes Figure 2 Magnified view of part A in FIG.

[0022] Figure 4 is a perspective view of a female mold assembly according to an exemplary embodiment.

[0023] Figure 5 is a perspective view of a flanging blade block according to an exemplary embodiment.

[0024] Figure 6 is a perspective view of a male mold according to an exemplary embodiment.

[0025] Figure 7 is a perspective view of a blank holder according to an exemplary embodiment.

[0026] The reference numerals are described as follows:

[0027] 1. Die assembly; 11. Die; 12. Die insert; 121. First step; 13. Flanging knife block; 131. Second step; 14. First bolt; 15. Second bolt; 2. Punch; 21. Second groove; 3. Blank holder; 4. Sheet material; 5. Air cushion push rod. DETAILED DESCRIPTION

[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0029] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0030] like Figure 1-7 As shown, a common die assembly for drawing and flanging according to an embodiment of the utility model comprises a concave die assembly 1 and a convex die 2.

[0031] like Figure 1 , 2 As shown, the die assembly 1 includes a die 11, a die insert 12 and a flanging cutter block 13. The die 11 is provided with a first groove, and the die insert 12 and the flanging cutter block 13 are both installed in the first groove.

[0032] like Figure 1 , 2 As shown in FIGS. 6 and 7 , the punch 2 is arranged opposite to the die assembly 1 and is used for releasably abutting against the die assembly 1 . The convex surface of the punch 2 is provided with a second groove 21 corresponding to the flanging knife block 13 .

[0033] There is a gap between the die insert 12 and the side wall of the first groove, and the flanging knife block 13 can switch between the first position and the second position. The first position of the flanging knife block 13 is located in the gap, and the second position of the flanging knife block 13 extends out of the gap and into the second groove 21.

[0034] like Figure 1 As shown, when the sheet material 4 is drawn, the drawing and flanging common die assembly of the embodiment of the utility model is installed on the press equipment, and the flanging knife block 13 is first locked in the first position;

[0035] The press device drives the punch 2 and / or the die assembly 1 so that the punch 2 is separated from the die assembly 1;

[0036] Placing the sheet material 4 between the male die 2 and the female die assembly 1;

[0037] The press equipment drives the punch 2 and the die assembly 1 to move toward each other, so that the punch 2 and the die assembly 1 extrude and draw the sheet material 4 together.

[0038] like Figure 2As shown, when the sheet material 4 is flanging, the flanging knife block 13 is unlocked;

[0039] The positions of the punch 2 and the die assembly 1 on the press equipment are swapped, and the air cushion push rod 5 of the press equipment is brought into contact with the flanging knife block 13;

[0040] Placing the sheet material 4 between the male die 2 and the female die assembly 1;

[0041] The press equipment drives the punch 2 and / or the die assembly 1 to move, so that the punch 2 and the die assembly 1 jointly extrude the sheet material 4. At the same time, the press equipment drives the air cushion push rod 5 to move, and the air cushion push rod 5 drives the flanging knife block 13 to move to the second position. The blade of the flanging knife block 13 presses the corresponding part of the sheet material 4 into the second groove 21, thereby flanging the sheet material 4.

[0042] like Figure 1 , 2 As shown, in a preferred embodiment of the present invention, a first step 121 is provided at one end of the die insert 12, and a distance is provided between the first step 121 and the bottom wall of the first groove.

[0043] like Figure 1 , 2 As shown in Figure 5, a second step 131 is provided at one end of the flanging blade block 13, and the second step 131 can move between the first step 121 and the bottom wall of the first groove.

[0044] When the flanging blade 13 is at the first position, the second step 131 abuts against the bottom wall of the first groove.

[0045] When the flanging blade 13 is at the second position, the second step 131 abuts against the first step 121 .

[0046] In a preferred embodiment of the utility model, when viewed from above or above, the flanging blade block 13 is in any of the following shapes: annular, C-shaped, L-shaped, or straight, and the second groove 21, the gap, the first step 121, and the second step 131 are all adapted to the shape of the flanging blade block 13.

[0047] like Figure 5 , 6 As shown, when the flanging blade 13 is annular, the second groove 21, the gap, the first step 121 and the second step 131 are all correspondingly annular.

[0048] like Figure 1 As shown, in a preferred embodiment of the present utility model, the cross section of the die insert 12 is in the shape of a "convex" character, and the cross section of the flanging blade block 13 is in the shape of a "7" character.

[0049] like Figure 1 , 7As shown, in a preferred embodiment of the present invention, a blank holder ring 3 is further included, which is sleeved outside the punch 2. The blank holder ring 3 and the punch 2 are in contact with the die assembly 1 to draw the workpiece. When the flanging operation is performed, the blank holder ring 3 can be removed.

[0050] The press equipment drives the blank holder 3 through the air cushion push rod 5, so that the blank holder 3 and the punch 2 are in contact with the die assembly 1 together.

[0051] In a preferred embodiment of the present invention, when the flanging knife block 13 is in the first position, one end of the flanging knife block 13 is fixed to the bottom wall of the die 11 , and the blade portion of the other end of the flanging knife block 13 is flush with the surface of the die insert 12 .

[0052] like Figure 1 As shown, in a preferred embodiment of the present invention, when the sheet material 4 is drawn, the die assembly 1 is located above the punch 2, and the die assembly 1 and the punch 2 are configured to draw the workpiece together.

[0053] like Figure 1 , 2 As shown, in a preferred embodiment of the utility model, the die assembly 1 also includes a plurality of first bolts 14 and a plurality of second bolts 15, the bottom wall of the die 11 is provided with a plurality of first through holes and a plurality of second through holes, one end of the flanging knife block 13 is provided with a first threaded hole corresponding to the first through hole, and when the flanging knife block 13 is in the first position, one end of the flanging knife block 13 is fixed to the die 11 by the first bolt 14.

[0054] A second threaded hole is formed at one end of the die insert 12 corresponding to the second through hole, and the die insert 12 is fixed to the bottom wall of the first groove by a second bolt 15 .

[0055] In a preferred embodiment of the present invention, the flanging tool block 13 can be movably installed in the gap. When flanging the workpiece, the flanging tool block 13 is driven from the first position to the second position by an external force.

[0056] The bottom wall of the die 11 is provided with a plurality of third through holes corresponding to the flanging blade block 13 , and the air cushion push rod 5 of the press equipment extends into the die 11 through the third through holes to drive the flanging blade block 13 to move from the first position to the second position.

[0057] like Figure 2 As shown, in a preferred embodiment of the utility model, when it is necessary to flanging the sheet material 4, the first bolt 14 is removed so that the flanging knife block 13 can move freely, and the positions of the punch 2 and the die assembly 1 on the press equipment are swapped so that the die assembly 1 is located below the punch 2. The air cushion push rod 5 of the press equipment pushes the flanging knife block 13 upward, and when the second step 131 of the flanging knife block 13 abuts against the first step 121, the flanging is completed.

[0058] The air cushion ejector of the press equipment provides pressure for the drawing blank holder and the flanging knife block, saving nitrogen springs.

[0059] The drawing and flanging common die assembly provided in the embodiment of the utility model can reduce one set of flanging dies for each door cover part, saving about 50,000 to 80,000 yuan in die costs for a single door cover part. A vehicle model has four doors and two covers with a total of 10 parts, saving about 500,000 to 800,000 yuan in development costs.

[0060] In the embodiments of the present invention, the term "multiple" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0061] In the description of the embodiments of the present invention, it is necessary to understand that the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0062] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A common die assembly for drawing and flanging, characterized in that: include: A die assembly (1) comprises a die (11), a die insert (12) and a flanging knife block (13); the die (11) is provided with a first groove; the die insert (12) and the flanging knife block (13) are both installed in the first groove; The punch (2) is arranged opposite to the die assembly (1) and is used for releasably abutting against the die assembly (1). The convex surface of the punch (2) is provided with a second groove (21) corresponding to the flanging knife block (13). There is a gap between the die insert (12) and the side wall of the first groove, and the flanging knife block (13) can switch between a first position and a second position. The first position of the flanging knife block (13) is located in the gap, and the second position of the flanging knife block (13) extends out of the gap and into the second groove (21).

2. The common drawing and flanging die assembly according to claim 1, characterized in that: A first step (121) is provided at one end of the die insert (12), and a second step (131) is provided at one end of the flanging knife block (13). The second step (131) can move between the first step (121) and the bottom wall of the first groove. When the flanging knife block (13) is in the first position, the second step (131) abuts against the bottom wall of the first groove. When the flanging knife block (13) is in the second position, the second step (131) abuts against the first step (121).

3. The common drawing and flanging die assembly according to claim 2, characterized in that: The flanging blade block (13) is in any one of the shapes of annular, C-shaped, L-shaped and straight, and the second groove (21), the gap, the first step (121) and the second step (131) are all adapted to the shape of the flanging blade block (13).

4. The common drawing and flanging die assembly according to claim 2, characterized in that: The cross section of the die insert (12) is in the shape of a "convex" character, and the cross section of the flanging knife block (13) is in the shape of a "7" character.

5. The common drawing and flanging die assembly according to claim 1, characterized in that: It also includes a blank holder ring (3), which is sleeved outside the punch (2). The blank holder ring (3) and the punch (2) are jointly in contact with the die assembly (1) to draw the workpiece.

6. The common drawing and flanging die assembly according to claim 1, characterized in that: When the flanging knife block (13) is in the first position, one end of the flanging knife block (13) is fixed on the bottom wall of the die (11), and the blade portion of the other end of the flanging knife block (13) is flush with the surface of the die insert (12).

7. The common drawing and flanging die assembly according to claim 6, characterized in that: The die assembly (1) is located above the punch (2), and the die assembly (1) and the punch (2) are configured to draw a workpiece together.

8. The common drawing and flanging die assembly according to claim 6, characterized in that: The die assembly (1) further comprises a plurality of first bolts (14) and a plurality of second bolts (15); when the flanging blade block (13) is in the first position, one end of the flanging blade block (13) is fixed to the bottom wall of the first groove via the first bolt (14), and one end of the die insert (12) is fixed to the bottom wall of the first groove via the second bolt (15).

9. The common drawing and flanging die assembly according to claim 1, characterized in that: The flanging knife block (13) can be movably installed in the gap. When flanging the workpiece, the flanging knife block (13) is driven from a first position to a second position by an external force.

10. The common drawing and flanging die assembly according to claim 9, characterized in that: The female mold assembly (1) is located below the male mold (2).

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