Scrap knife set and edge trimming device for automobile sheet metal

Abstract

The utility model belongs to automobile sheet metal trimming equipment technical field discloses a kind of waste knife groups and trimming equipment for automobile sheet metal.The waste knife group includes the first waste knife being arranged in upper die, first trimming knife, and the second waste knife being arranged in lower die, second trimming knife.The first waste knife is equipped with puncture part.When upper die and lower die moulding are trimmed to the discarded part of automobile sheet metal, the puncture part is first punctured into discarded part and forms a recess;Subsequently, first, second trimming knife cuts with this recess as tearing starting point, and the reserved part is separated from discarded part, and this process changes material separation mode from pure shearing to controllable tearing, to inhibit the generation of debris from the root.The discarded part that has been separated is divided into two parts by first, second waste knife.By changing separation mechanism, the debris problem generated by traditional shearing mode is completely avoided, with the significant advantages of reliable structure, low cost and no additional manual intervention.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive sheet metal trimming equipment, and in particular to a waste material cutting tool set and trimming equipment for automotive sheet metal. Background Technology

[0002] With the rapid development of the automotive industry, consumers are increasingly demanding higher quality automotive appearance. In the stamping production of automotive sheet metal parts, the trimming process is a crucial step in forming the part's contour. However, current traditional trimming equipment and methods have a significant drawback: during sheet metal trimming, a large amount of metal debris is often generated between the pre-reserved portion and the scrap portion of the part.

[0003] The generation of these debris fragments can severely disrupt the continuity of high-speed stamping production, leading to frequent downtime and reduced equipment efficiency. Simultaneously, these fragments can scratch the surface of parts, resulting in substandard finishes and increasing the risk of rework or even scrap. Current common countermeasures, such as applying adhesive to the scrap cutter, using a secondary cutting method, multi-stage trimming, or vacuum removal of debris, all have limitations and cannot simultaneously improve debris removal efficiency while saving costs. Utility Model Content

[0004] The purpose of this invention is to provide a waste cutting tool assembly and a trimming device for automotive sheet metal, which can improve the removal effect of debris while saving costs.

[0005] According to one aspect of the present invention, a scrap cutting tool assembly is provided, which is disposed on a trimming device and used for cutting automotive sheet metal, characterized in that it comprises: The first waste cutter is disposed on the upper mold of the trimming device, and has a first side blade and a piercing part thereon; The second waste cutter is disposed on the lower die of the trimming device, and has a second side blade surface thereon; The first trimming blade is disposed on the upper mold of the trimming device; The second trimming blade is disposed on the lower mold of the trimming device; The automotive sheet metal includes a reserved portion and a discarded portion. The discarded portion is located between the first waste cutting tool and the second waste cutting tool. When the upper mold and the lower mold are closed, the piercing part can pierce part of the discarded portion and leave a depression on the discarded portion. Then, the first side cutting surface and the second side cutting surface are attached and gradually approach each other. After the depression is left on the discarded portion, the first trimming tool and the second trimming tool can leave the reserved portion on the automotive sheet metal and cut the discarded portion off the reserved portion. Then, the discarded portion is separated into two parts by the first waste cutting tool and the second waste cutting tool.

[0006] Preferably, the puncture portion is a first pointed protrusion provided on a first preset surface of the first waste knife, and the first preset surface is the side of the first waste knife facing the second waste knife.

[0007] Preferably, the first pointed protrusion is a square pyramid or a triangular pyramid.

[0008] Preferably, the first pointed protrusion is a square pyramid shape, and the tip of the first pointed protrusion is located at a first preset angle on the first preset surface. The first preset angle is the angle formed by the first side blade surface and the side of the first waste blade near the reserved portion.

[0009] Preferably, a second pointed protrusion is provided on the second preset surface of the first trimming knife, the second preset surface being the side of the first trimming knife facing the second trimming knife, and the second pointed protrusion can continue to expand the volume of the recess during the movement of the upper mold.

[0010] Preferably, when the first trimming blade and the first waste blade move with the upper die, the first pointed protrusion can contact the waste portion before the second pointed protrusion.

[0011] Preferably, the relative height of the first pointed protrusion is higher than the relative height of the second pointed protrusion.

[0012] Preferably, the second waste cutter is provided with a reserved notch that can accommodate the second pointed protrusion.

[0013] According to another aspect of the present invention, a trimming device for automotive sheet metal is provided, comprising a scrap cutter assembly, an upper die, a lower die, and a driving device as described above. The driving device is capable of driving the upper die and the lower die to close together, and the scrap cutter assembly cuts the automotive sheet metal as it moves with the upper die and the lower die.

[0014] Beneficial effects: The waste cutting blade assembly provided in this embodiment first creates a piercing indentation in the waste area using the piercing part on the first waste blade. Then, the first and second trimming blades use this indentation as the tearing starting point to trim the edges, transforming the separation process from pure shearing to controlled tearing controlled by the starting point. The waste portion is then further divided in two by the action of the first and second waste blades. This method fundamentally avoids the debris problem caused by complete shearing. Compared to existing technologies such as coating with adhesives, secondary cutting, or vacuum adsorption, this solution, by improving the separation mechanism itself, has significant advantages such as low cost, high reusability, and no need for additional manual intervention.

[0015] The trimming equipment for automotive sheet metal provided in this embodiment improves the removal effect of debris while saving costs through the improvement of the waste blade assembly, thereby avoiding downtime caused by debris and improving production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0017] Figure 1 This is a partial structural schematic diagram of the waste cutting tool assembly provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the waste cutting tool assembly provided in this embodiment of the utility model cutting the waste part; Figure 3 This is a schematic diagram of the structure of the first waste cutter provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the structure of the first trimming knife provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the waste cutting tool assembly provided in this embodiment of the present invention, showing the uncut automotive sheet metal. Figure 6 This is a schematic diagram of the waste cutting tool assembly provided in this embodiment of the present invention leaving a dent on the automotive sheet metal; Figure 7 This is a schematic diagram of the waste cutting tool assembly provided in this embodiment of the utility model cutting off the waste portion; Figure 8 This is a schematic diagram of the scrap cutting tool assembly provided in this embodiment of the present invention after cutting automotive sheet metal.

[0018] In the picture: 1. First scrap cutter; 11. First side blade; 12. First pointed protrusion; 2. Second scrap cutter; 3. First trimming knife; 31. Second pointed protrusion; 4. Second trimming knife; 10. Automotive sheet metal work; 101. Reserved portion; 102. Scrapped portion; 1021. Dent. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0023] Figure 1 This is a partial structural schematic diagram of the waste cutting tool assembly shown in this embodiment. Figure 2 This is a schematic diagram showing the waste cutting tool assembly cutting the waste portion 102 as illustrated in this embodiment. Figure 1 and Figure 2As shown, this embodiment provides a scrap cutter assembly, which is mounted on a trimming device and used to cut automotive sheet metal 10. The scrap cutter assembly includes a first scrap cutter 1, a second scrap cutter 2, a first trimming cutter 3, and a second trimming cutter 4. The first scrap cutter 1 is mounted on the upper die of the trimming device and has a first side blade 11 and a piercing portion thereon. The second scrap cutter 2 is mounted on the lower die of the trimming device and has a second side blade. The first trimming cutter 3 is mounted on the upper die of the trimming device. The second trimming cutter 4 is mounted on the lower die of the trimming device. The automotive sheet metal 10 includes a reserved portion 101 and a discarded portion 102. The discarded portion 102 is located between the first waste cutter 1 and the second waste cutter 2. When the upper mold and the lower mold are closed, the piercing part can pierce part of the discarded portion 102 and leave a recess 1021 on the discarded portion 102. Then, the first side blade 11 and the second side blade are attached and gradually approach each other. After the recess 1021 is left on the discarded portion 102, the first trimming cutter 3 and the second trimming cutter 4 can leave the reserved portion 101 on the automotive sheet metal 10 and cut the discarded portion 102 off the reserved portion 101. Then, the discarded portion 102 is divided into two parts by the first waste cutter 1 and the second waste cutter 2.

[0024] The waste cutting tool assembly provided in this embodiment first creates a recess 1021 in the waste area through the piercing part on the first waste cutting tool 1. Subsequently, the first trimming tool 3 and the second trimming tool 4 use this recess 1021 as the tearing starting point to trim the edges, changing the separation process between the waste part and the reserved part 101 from pure shearing to controlled tearing controlled by the starting point. Then, the waste part 102 is further divided into two parts by the action of the first waste cutting tool 1 and the second waste cutting tool 2. This method fundamentally avoids the debris problem caused by complete shearing. Compared with existing technologies such as coating adhesives, secondary cutting, or vacuum adsorption, this solution has significant advantages such as low cost, high reusability, and no need for additional manual intervention by improving the separation mechanism itself.

[0025] Figure 3 This is a schematic diagram of the structure of the first waste cutting tool 1 shown in this embodiment. Figure 3 and combined Figure 1 and Figure 2 As shown, the piercing part is a first pointed protrusion 12 provided on the first preset surface of the first waste blade 1, and the first preset surface is the side of the first waste blade 1 facing the second waste blade 2. Due to its special shape, the first pointed protrusion 12, compared with long needle-shaped or cylindrical protrusions, can not only pierce the waste part of the automotive sheet metal 10, but also form a certain pre-shearing path (i.e., form a depression 1021) after piercing, thereby changing the separation process of the waste part and the reserved part 101 from pure shearing to controllable tearing controlled by the starting point.

[0026] Specifically, the first pointed protrusion 12 is a square pyramid or a triangular pyramid, which not only pierces the waste part of the automotive sheet metal 10, but also forms a certain pre-shearing path (i.e., forms a depression 1021) after piercing. Compared with a simple arrow shape, the square pyramid or triangular pyramid shape of the first pointed protrusion 12 can concentrate the stress more and make the connection root with the first waste knife 1 more stable, resulting in a longer service life and a better piercing effect.

[0027] Preferably, the first pointed protrusion 12 is a square pyramid shape, and the tip of the first pointed protrusion 12 is located at the first preset angle of the first preset surface. The first preset angle is the angle formed by the first side blade surface 11 and the side of the first waste blade 1 near the reserved portion 101. The first pointed protrusion 12 located at the first preset angle can effectively cooperate with the second waste blade 2, thereby cutting the waste portion 102 into two parts, so that the waste portion 102 can smoothly enter the subsequent recycling equipment.

[0028] Figure 4 This is a schematic diagram of the structure of the first trimming knife 3 shown in this embodiment. Figure 4 and combined Figures 1-3 As shown, a second pointed protrusion 31 is provided on the second preset surface of the first trimming knife 3. The second preset surface is the side of the first trimming knife 3 facing the second trimming knife 4. The second pointed protrusion 31 can continue to expand the volume of the recess 1021 during the movement of the upper mold, thereby cooperating with the first pointed protrusion 12 of the first waste knife 1, so that the separation process of the waste part and the reserved part 101 changes from pure shearing to controllable tearing controlled by the starting point.

[0029] Specifically, when the first trimming blade 3 and the first waste blade 1 move with the upper die, the first pointed protrusion 12 can contact the waste part 102 before the second pointed protrusion 31, thereby preventing the first trimming blade 3 from contacting the waste part 102 of the car half, and thus preventing the separation process of the waste part and the reserved part 101 from becoming a pure shearing process.

[0030] Furthermore, the relative height of the first pointed protrusion 12 is higher than the relative height of the second pointed protrusion 31, so that the first pointed protrusion 12 can contact the waste portion 102 before the second pointed protrusion 31.

[0031] Furthermore, the second waste cutter 2 is provided with a reserved notch that can be adapted to the second pointed protrusion 31 so that the second pointed protrusion 31 can enter, thereby ensuring that the waste part 102 can be smoothly cut out from the reserved part 101.

[0032] This embodiment also provides a trimming device for automotive sheet metal 10, including the scrap cutter set, upper mold, lower mold and driving device as described above. The driving device can drive the upper mold and the lower mold to close. When the scrap cutter set moves with the upper mold and the lower mold, it cuts the automotive sheet metal 10.

[0033] The trimming equipment for automotive sheet metal 10 provided in this embodiment improves the removal effect of debris while saving costs through the improvement of the waste blade group, thereby avoiding downtime caused by debris problems and improving production efficiency.

[0034] Figure 5 This is a schematic diagram of the scrap cutting tool assembly shown in this embodiment, before it cuts the automotive sheet metal 10. Figure 6 This is a schematic diagram showing the waste cutting tool assembly leaving a recess 1021 on the automotive sheet metal 10 as illustrated in this embodiment. Figure 7 This is a schematic diagram showing the waste cutting tool assembly cutting off the waste portion 102 as illustrated in this embodiment. Figure 8 This is a schematic diagram showing the scrap cutter assembly cutting automotive sheet metal 10 as illustrated in this embodiment. Figures 5-8 As shown, the working process of this scrap cutting tool assembly is as follows: Figures 5-6 - Figures 7-2 - Figure 8 First, the upper mold drives the first pointed protrusion 12 of the first waste cutter 1 to leave a recess 1021 on the waste part 102. Then, the upper mold and the lower mold continue to perform the mold closing action. During the process of the mold closing action, the first trimming cutter 3 and the second trimming cutter 4 separate the reserved part 101 of the automotive sheet metal 10 from the waste part 102. After that, the upper mold and the lower mold continue to perform the mold closing action. The first waste cutter 1 and the second waste cutter 2 divide the waste part 102 into two parts.

[0035] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A scrap cutting tool assembly, mounted on a trimming device and used for cutting automotive sheet metal, characterized in that, include: The first waste cutter is disposed on the upper mold of the trimming device, and has a first side blade and a piercing part thereon; The second waste cutter is disposed on the lower die of the trimming device, and has a second side blade surface thereon; The first trimming blade is disposed on the upper mold of the trimming device; The second trimming blade is disposed on the lower mold of the trimming device; The automotive sheet metal includes a reserved portion and a discarded portion. The discarded portion is located between the first waste cutting tool and the second waste cutting tool. When the upper mold and the lower mold are closed, the piercing part can pierce part of the discarded portion and leave a depression on the discarded portion. Then, the first side cutting surface and the second side cutting surface are attached and gradually approach each other. After the depression is left on the discarded portion, the first trimming tool and the second trimming tool can leave the reserved portion on the automotive sheet metal and cut the discarded portion off the reserved portion. Then, the discarded portion is separated into two parts by the first waste cutting tool and the second waste cutting tool.

2. The waste cutting tool assembly according to claim 1, characterized in that, The puncture portion is a first pointed protrusion provided on the first preset surface of the first waste knife, and the first preset surface is the side of the first waste knife facing the second waste knife.

3. The waste cutting tool assembly according to claim 2, characterized in that, The first pointed protrusion is a square pyramid or a triangular pyramid.

4. The waste cutting tool assembly according to claim 3, characterized in that, The first pointed protrusion is a four-sided pyramid shape, and the tip of the first pointed protrusion is located at the first preset angle of the first preset surface. The first preset angle is the angle formed by the first side blade surface and the side of the first waste blade near the reserved part.

5. The waste cutting tool assembly according to claim 2, characterized in that, The first trimming blade has a second pointed protrusion on its second preset surface. The second preset surface is the side of the first trimming blade facing the second trimming blade. The second pointed protrusion can continue to expand the volume of the recess during the movement of the upper mold.

6. The waste cutting tool assembly according to claim 5, characterized in that, When the first trimming blade and the first waste blade move with the upper mold, the first pointed protrusion can contact the waste portion before the second pointed protrusion.

7. The waste cutting tool assembly according to claim 6, characterized in that, The relative height of the first pointed protrusion is higher than the relative height of the second pointed protrusion.

8. The waste cutting tool assembly according to claim 5, characterized in that, The second waste cutter is provided with a reserved notch that can be adapted to the second pointed protrusion.

9. A trimming device for automotive sheet metal work, characterized in that, The device includes a scrap cutting tool assembly, an upper die, a lower die, and a driving device as described in any one of claims 1-8, wherein the driving device is capable of driving the upper die and the lower die to close, and the scrap cutting tool assembly cuts the automotive sheet metal as it moves with the upper die and the lower die.

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