Trimming die assembly for sheet metal parts

Abstract

The utility model discloses a trimming die assembly for a sheet metal part, the trimming die assembly is used for the sheet metal part, the sheet metal part is provided with a first section extending along a first direction and a second section extending along a second direction, the trimming die assembly comprises a first cutter block and a second cutter block, a first cutting edge suitable for cutting the first section is formed on the first cutter block; a second cutting edge suitable for cutting the second section is formed on the second cutter block; wherein the first cutter block forms an avoiding cutting edge at the edge of the first cutting edge, and the avoiding cutting edge obliquely extends between the first direction and the second direction. According to the trimming die assembly, the avoiding cutting edge is arranged on the edge of the first cutting edge of the first cutter block, the first cutter block and the second cutter block do not interfere with each other in movement and do not generate a mutual intersection area, the risk caused by chippings is reduced, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the manufacturing field, in particular to a trimming die assembly for sheet metal parts. Background Art

[0002] In the automotive manufacturing industry, stamping production of cover parts dies is a key link in ensuring the quality of vehicle appearance. However, for a long time, stamping engineers have faced a common and thorny problem in the production process - trimming debris. These debris are inevitably generated during the stamping process and often fall on the die surface, causing serious impact on product quality. When the debris falls on the surface of the product, it will cause quality defects such as crushing and dents on the product, which not only affects the appearance of the vehicle, but may also affect the strength and durability of the structure.

[0003] There are two different cutting methods: tangent and side cutting. In tangent, the punch cuts into the workpiece vertically from top to bottom, while in side cutting, the punch cuts into the workpiece at an inclined angle.

[0004] During the mold design process, engineers often have to face the situation where side cuts and tangents coexist in adjacent areas of the same mold, which will result in an area where the tangent and side cuts intersect, the so-called "cutting intersection". During mass production, the cutting intersection area becomes a high-risk area for debris generation due to the concentration of cutting forces and the staggered cutting directions. If the debris is not cleaned up in time or effectively isolated, it will have a serious impact on subsequent sheet metal processing and affect production efficiency. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a trimming die assembly. According to the trimming die assembly of the utility model, by setting an avoidance edge on the edge of the first cutting edge of the first cutting block, the movements of the first cutting block and the second cutting block do not interfere with each other and do not produce a mutually intersecting area, thereby reducing the risk of debris generation and improving production efficiency and product quality.

[0006] According to the utility model, the trimming die assembly is used for a sheet metal part, the sheet metal part has a first section extending along a first direction and a second section extending along a second direction, the trimming die assembly comprises: a first cutting block, the first cutting block is formed with a first cutting edge suitable for cutting the first section; a second cutting block, the second cutting block is formed with a second cutting edge suitable for cutting the second section; wherein the first cutting block forms an avoidance cutting edge on the edge of the first cutting edge, and the avoidance cutting edge extends obliquely between the first direction and the second direction.

[0007] According to the trimming die assembly of the utility model, by setting a first cutting block and a second cutting block, the first cutting block can cut the first section extending in the first direction, and the second cutting block can cut the second section extending in the second direction. The first direction and the second direction are used to indicate two different extension directions of the edge of the sheet metal part in space. The first section and the second section are adjacent edge parts on the sheet metal part. The first cutting block cuts the first section to obtain an edge extending in the first direction, and the second cutting block cuts the second section to obtain an edge extending in the second direction. After the sheet metal part is processed by the trimming die assembly, the excess material can be removed to obtain a more regular and smooth edge. Specifically, the first cutting block is formed with a first cutting edge, and the first cutting edge is designed according to the specific shape and size of the first section, so that the first cutting block can accurately and efficiently cut off the excess part on the first section through the first cutting edge; the second cutting block is formed with a second cutting edge, and the second cutting edge is designed according to the specific shape and size of the second section, so that the second cutting block can accurately and efficiently cut off the excess part on the second section through the second cutting edge. At the same time, the first cutting block is also formed with an avoidance edge at the edge of the first cutting edge, and the avoidance edge can avoid the movement of the second cutting block, so that the movement of the first cutting block and the second cutting block will not interfere with each other. And the avoidance edge extends obliquely between the first direction and the second direction, the first cutting block moves to "tangent" the first section, and the second cutting block moves along the oblique extension direction of the avoidance edge to "side cut" the second section, and the movement trajectories of the first cutting block and the second cutting block will not produce an area of ​​mutual intersection, thereby effectively reducing the risk of debris generation.

[0008] According to some embodiments of the utility model, the trimming mold assembly includes: a base, which is suitable for supporting the sheet metal part; an upper mold base, which can move relative to the base, and the first cutting block and the second cutting block are respectively arranged on the upper mold base; wherein the second cutting block is movably arranged on the upper mold base and the moving direction is the same as the inclination direction of the avoidance cutting edge.

[0009] According to some embodiments of the present utility model, after the first cutting block and the second cutting block cut into the sheet metal part, a gap is formed between the second cutting block and the avoidance edge.

[0010] According to some embodiments of the present invention, the width of the gap is d1 and satisfies: 0.4 mm ≤ d1 ≤ 0.9 mm.

[0011] According to some embodiments of the present invention, an avoidance groove is formed on one side of the avoidance edge of the first cutting block and is open along the moving direction of the second cutting block.

[0012] According to some embodiments of the present invention, after the first cutting block and the second cutting block cut into the sheet metal part, the distance between the bottom wall of the avoidance groove and the second cutting block is d2 and satisfies: 2mm≤d2≤4mm.

[0013] According to some embodiments of the utility model, the trimming mold assembly also includes: an inclined piece, which is arranged on the upper mold base and movably cooperates with the upper mold base, and the second cutting block is arranged on the inclined piece and is suitable for moving on the upper mold base driven by the inclined piece.

[0014] According to some embodiments of the utility model, the oblique piece includes: a base, the second cutting block is arranged on the base; and a guide plate, the guide plate is formed with a sliding surface, and the sliding surface can be slidably matched with the upper mold base to enable the oblique piece to move on the upper mold base.

[0015] According to some embodiments of the present invention, the guide plate extends in the length direction and is configured as a plurality of guide plates spaced apart in the width direction.

[0016] According to some embodiments of the present invention, the second cutting block extends in the width direction, and the first cutting block structure is respectively arranged at two ends of the second cutting block, and each of the first cutting blocks forms the avoidance edge at the edge of the first cutting edge.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a cross-sectional schematic diagram of the intersection of a tangential cutting blade block and a side cutting blade block in the related art;

[0020] Figure 2 is a cross-sectional schematic diagram of a first cutting block and a second cutting block according to an embodiment of the utility model;

[0021] Figure 3 The utility model is a schematic structural diagram of a first cutting block, a second cutting block and an inclined member according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] A first cutting block 11, a first cutting edge 111, an avoidance cutting edge 112, and an avoidance groove 113;

[0024] A second cutting block 12, a second cutting edge 121;

[0025] Inclined member 13 , base 131 , guide plate 132 . DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In related technologies, such as Figure 1 As shown in the figure, during the mold design process, engineers often need to face the situation where the side cut and the tangent exist simultaneously in adjacent areas of the same mold, which will result in an area where the tangent and the side cut intersect, the so-called "cutting intersection". During mass production, the cutting intersection area becomes a high-risk area for debris generation due to the concentration of cutting force and the staggered cutting direction. If the debris is not cleaned in time or effectively isolated, it will have a serious impact on subsequent sheet metal processing and affect production efficiency.

[0030] Reference below Figure 2 and Figure 3 A trimming die assembly according to an embodiment of the utility model is described.

[0031] like Figure 2 and Figure 3 As shown, the trimming die assembly according to the utility model is used for a sheet metal part, and the sheet metal part has a first section extending along a first direction and a second section extending along a second direction. The trimming die assembly includes a first cutting block 11 and a second cutting block 12. The first cutting block 11 is formed with a first cutting edge 111 suitable for cutting the first section; the second cutting block 12 is formed with a second cutting edge 121 suitable for cutting the second section; wherein the first cutting block 11 forms an avoidance cutting edge 112 on the edge of the first cutting edge 111, and the avoidance cutting edge 112 extends obliquely between the first direction and the second direction.

[0032] According to the trimming die assembly of the utility model, by setting the first cutting block 11 and the second cutting block 12, the first cutting block 11 can cut the first section extending along the first direction, and the second cutting block 12 can cut the second section extending along the second direction. The first direction and the second direction are used to represent two different extension directions of the edge of the sheet metal part in space. The first section and the second section are adjacent edge parts on the sheet metal part. The first cutting block 11 cuts the first section to obtain an edge extending in the first direction, and the second cutting block 12 cuts the second section to obtain an edge extending in the second direction. After the sheet metal part is processed by the trimming die assembly, the excess material can be removed to obtain a more regular and smooth edge. Specifically, the first cutting block 11 is formed with a first cutting edge 111, which is designed according to the specific shape and size of the first section, so that the first cutting block 11 can accurately and efficiently cut off the excess part of the first section through the first cutting edge 111; the second cutting block 12 is formed with a second cutting edge 121, which is designed according to the specific shape and size of the second section, so that the second cutting block 12 can accurately and efficiently cut off the excess part of the second section through the second cutting edge 121. At the same time, the first cutting block 11 is also formed with an avoidance cutting edge 112 on the edge of the first cutting edge 111, and the avoidance cutting edge 112 can avoid the movement of the second cutting block 12, so that the movement of the first cutting block 11 and the second cutting block 12 will not interfere with each other. In addition, the avoidance cutting edge 112 extends obliquely between the first direction and the second direction. The first cutting block 11 moves to "tangent" the first section, while the second cutting block 12 moves along the oblique extension direction of the avoidance cutting edge to "side cut" the second section. The movement trajectories of the first cutting block 11 and the second cutting block 12 will not produce an area where they intersect with each other, thereby effectively reducing the risk of debris generation and improving production efficiency and product quality.

[0033] Therefore, according to the trimming die assembly of the utility model, by setting an avoidance edge 112 on the edge of the first cutting edge 111 of the first cutting block 11, the movements of the first cutting block 11 and the second cutting block 12 do not interfere with each other and no intersection area will be generated, thereby reducing the risk of debris generation and improving production efficiency and product quality.

[0034] According to some embodiments of the utility model, the trimming die assembly includes a base and an upper die seat, the base is suitable for supporting a sheet metal part; the upper die seat can move relative to the base, and the first cutting block 11 and the second cutting block 12 are respectively arranged on the upper die seat; wherein the second cutting block 12 can be movably arranged on the upper die seat and the moving direction is the same as the tilting direction of the avoidance edge 112. By setting the base, the base is used to support and position the sheet metal part to be processed. By setting the upper die seat, the upper die seat can move relative to the base to cooperate with the base to cut the sheet metal parts between each other. Specifically, when the upper die seat moves toward the base, the first cutting block 11 and the second cutting block 12 will contact and cut the sheet metal part located on the base, thereby realizing the trimming operation of the sheet metal part. The first cutting block 11 and the second cutting block 12 can contact the sheet metal part at the same time. Since there is no area where the first cutting block 11 and the second cutting block 12 move and intersect with each other, there will be no phenomenon that the sheet metal may be pierced due to the intersection of the knives. When the upper die seat moves toward the base, the first cutting block 11 moves under the drive of the upper die seat to contact the sheet metal. By movably setting the second cutting block 12 on the upper die seat, the second cutting block 12 not only moves under the drive of the upper die seat, but also can move on the upper die seat relative to the upper die seat to cut the sheet metal at an inclined angle to meet specific process requirements.

[0035] According to some embodiments of the present invention, Figure 2 As shown, after the first cutting block 11 and the second cutting block 12 cut into the sheet metal part, a gap is formed between the second cutting block 12 and the avoidance edge 112. The first cutting block 11 and the second cutting block 12 can work simultaneously or successively, but after the first cutting block 11 and the second cutting block 12 cut into the sheet metal part, a gap is formed between the second cutting block 12 and the avoidance edge 112, thereby ensuring the smoothness and accuracy of the cutting process, reducing the downtime caused by tool interference, and thus improving production efficiency.

[0036] According to some embodiments of the utility model, the width of the gap is d1 and satisfies: 0.4mm≤d1≤0.9mm. The existence of the gap d1 is to ensure that during the cutting process, after the first cutting block 11 and the second cutting block 12 cut into the sheet metal, the second cutting block 12 will not interfere with or collide with the avoidance edge 112 when continuing to move or returning. The selection of the gap width d1 is based on actual process requirements and experience. The gap width in the range of 0.4mm to 0.9mm can ensure the stability and accuracy of the cutting process, and achieve that the movement of the first cutting block 11 and the second cutting block 12 will not interfere with each other while ensuring the cutting accuracy and cutting effect.

[0037] According to some embodiments of the present invention, Figure 2 As shown, the first cutting block 11 is formed with an avoidance groove 113 open along the moving direction of the second cutting block 12 on one side of the avoidance edge 112. The avoidance groove 113 is located on the first cutting block 11, and the avoidance groove 113 is formed on the side of the first cutting block 11 close to the avoidance edge 112. By providing the avoidance groove 113, it is convenient to install the first cutting block 11 and the second cutting block 12, and to calibrate the positions of the first cutting block 11 and the second cutting block 12 after installation, so as to ensure that the first cutting block 11 and the second cutting block 12 can be accurately aligned and matched during the cutting process. In addition, the provision of the avoidance groove 113 allows the second cutting block 12 to have space to move when it is impacted and vibrated, thereby avoiding direct rigid collision, reducing the risk of damage to the cutting block, and extending the service life of the cutting block.

[0038] According to some embodiments of the utility model, after the first cutting block 11 and the second cutting block 12 cut into the sheet metal part, the distance between the bottom wall of the avoidance groove 113 and the second cutting block 12 is d2 and satisfies: 2mm≤d2≤4mm. After the first cutting block 11 and the second cutting block 12 cut into the sheet metal part, a specific relative position relationship will be formed between the first cutting block 11 and the second cutting block 12, and at this time, the distance d2 between the bottom wall of the avoidance groove 113 and the second cutting block 12 satisfies: 2mm≤d2≤4mm. The distance d2 between 2mm and 4mm can facilitate the calibration of the relative position relationship between the first cutting block 11 and the second cutting block 12 after the installation is completed, and also allow the second cutting block 12 to have sufficient space to move when subjected to impact and vibration, thereby reducing the risk of collision. Preferably, d2=3mm.

[0039] According to some embodiments of the present invention, Figure 3As shown, the trimming die assembly also includes an inclined piece 13, which is arranged on the upper die seat and is movably matched with the upper die seat, and the second cutting block 12 is arranged on the inclined piece 13 and is suitable for moving on the upper die seat driven by the inclined piece 13. By arranging the inclined piece 13 on the upper die seat, relative movement can occur between the inclined piece 13 and the upper die seat. By arranging the second cutting block 12 on the inclined piece 13, since there is a movable match between the inclined piece 13 and the upper die seat, the second cutting block 12 can move on the upper die seat through the movement of the inclined piece 13, thereby cutting the sheet metal at an inclined angle to meet specific process requirements.

[0040] According to some embodiments of the present invention, Figure 3 As shown, the inclined member 13 includes a base 131 and a guide plate 132, and the second cutting block 12 is arranged on the base 131; the guide plate 132 is formed with a sliding surface, and the sliding surface can slide with the upper die seat to allow the inclined member 13 to move on the upper die seat. By setting the base 131, the base 131 is used to support and fix other components, and the second cutting block 12 is set on the base 131. Since there is a movable matching relationship between the inclined member 13 and the upper die seat, the second cutting block 12 can move on the upper die seat through the movement of the inclined member 13. By setting the guide plate 132 on the inclined member 13, the sliding surface is used to slide with the upper die seat, thereby allowing the inclined member 13 to move on the upper die seat along the extension direction of the guide plate 132, so that the second cutting block 12 moves smoothly on the upper die seat to achieve precise cutting operations.

[0041] According to some embodiments of the present invention, Figure 3 As shown, the guide plate 132 extends in the length direction and is configured as a plurality of guide plates 132 spaced apart in the width direction. The guide plate 132 is extended along the length direction, which is also the first direction, so that the guide plate 132 can provide sufficient support and stability so that the inclined member 13 can slidably cooperate with the upper die seat along the extension direction of the guide plate 132. By configuring the guide plate 132 as a plurality of guide plates 132 spaced apart in the width direction, the plurality of guide plates 132 can provide more support points, thereby increasing the stability and sliding accuracy between the inclined member 13 and the upper die seat. In addition, the plurality of guide plates 132 spaced apart can reduce the friction between each guide plate 132 and the upper die seat by dispersing the load, making the sliding smoother.

[0042] According to some embodiments of the present invention, Figure 3As shown, the second cutting block 12 extends in the width direction, and the first cutting block 11 is respectively arranged at two ends of the second cutting block 12, and each first cutting block 11 forms an avoidance edge 112 at the edge of the first edge 111. In order to match the portion to be cut on the second section of the sheet metal, the second cutting block 12 extends along the width direction, which is also the second direction. By arranging the first cutting block 11 at two ends of the second cutting block 12, the two first cutting blocks 11 respectively cut the two first sections of the sheet metal separated in the second direction to obtain a regular edge extending in the first direction. At the same time, each first cutting block 11 forms an avoidance edge 112 on the edge of the first cutting edge 111, so that each first cutting block 11 can avoid the movement of the second cutting block 12, so that when the second cutting block 12 moves, any first cutting block 11 will not interfere with the second cutting block 12, and the movement trajectories of the first cutting block 11 and the second cutting block 12 will not produce an area of ​​mutual intersection, which effectively reduces the risk of debris generation.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 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.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A trimming die assembly for a sheet metal part, the sheet metal part having a first section extending along a first direction and a second section extending along a second direction, characterized in that: The trimming die assembly comprises: A first cutting block (11), the first cutting block (11) being formed with a first cutting edge (111) suitable for cutting the first segment; A second cutting block (12), wherein the second cutting block (12) is formed with a second cutting edge (121) suitable for cutting the second section; The first cutting block (11) forms an avoidance cutting edge (112) at the edge of the first cutting edge (111), and the avoidance cutting edge (112) extends obliquely between the first direction and the second direction.

2. The trimming die assembly according to claim 1, characterized in that: include: a base, the base being adapted to support the sheet metal member; An upper die seat, the upper die seat being movable relative to the base, the first cutting block (11) and the second cutting block (12) being respectively arranged on the upper die seat; wherein The second cutting block (12) is movably arranged on the upper die seat, and the moving direction is the same as the inclination direction of the avoidance cutting edge (112).

3. The trimming die assembly according to claim 2, characterized in that: After the first cutting block (11) and the second cutting block (12) cut into the sheet metal part, a gap is formed between the second cutting block (12) and the avoidance edge (112).

4. The trimming die assembly according to claim 3, characterized in that: The width of the gap is d1 and satisfies: 0.4 mm ≤ d1 ≤ 0.9 mm.

5. The trimming die assembly according to claim 3, characterized in that: The first cutting block (11) is formed with an avoidance groove (113) on one side of the avoidance edge (112), the avoidance groove being open along the moving direction of the second cutting block (12).

6. The trimming die assembly according to claim 5, characterized in that: After the first cutting block (11) and the second cutting block (12) cut into the sheet metal part, the distance between the bottom wall of the avoidance groove (113) and the second cutting block (12) is d2 and satisfies: 2mm≤d2≤4mm.

7. The trimming die assembly according to claim 2, characterized in that: Also includes: An inclined piece (13) is arranged on the upper die base and is movably matched with the upper die base. The second cutting block (12) is arranged on the inclined piece (13) and is suitable for moving on the upper die base under the drive of the inclined piece (13).

8. The trimming die assembly according to claim 7, characterized in that: The inclined member (13) comprises: A base (131), wherein the second cutting block (12) is arranged on the base (131); A guide plate (132) is formed with a sliding surface, and the sliding surface can be slidably matched with the upper die seat to enable the inclined member (13) to move on the upper die seat.

9. The trimming die assembly according to claim 8, characterized in that: The guide plate (132) extends in the length direction and is configured to be a plurality of guide plates that are spaced apart in the width direction.

10. The trimming die assembly according to claim 8, characterized in that: The second cutting block (12) extends in the width direction, and the first cutting block (11) is structured as two blocks respectively arranged at both ends of the second cutting block (12), and each of the first cutting blocks (11) forms the avoidance cutting edge (112) at the edge of the first cutting edge (111).

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