Correcting punching lower die, correcting die and skylight guide rail

Abstract

The utility model discloses a correction punching lower die, a correction die and a skylight guide rail, the correction punching lower die comprises a lower die fixed plate, a lower die fixed plate, a lower die fixed plate and a correction die, the lower die fixed plate is connected with a positioning bearing platform, the positioning bearing platform is provided with a profiling surface for placing a workpiece to be corrected, the area of the workpiece to be corrected on the profiling surface is a processing area, and the profiling surface is provided with a plurality of initial positioning parts outside the processing area; the positioning bearing platform is divided into a front machining area and a rear machining area in the length direction, the front machining area is connected with a vertically-upward positioning pin in the machining area, the rear machining area is connected with an X-axis telescopic device and a Y-axis telescopic device outside the machining area, and a plurality of blanking die holes are formed in the rear machining area. Compared with the prior art, the machining process can be saved, the cost can be reduced, and design holes better meeting the design requirements can be machined.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile manufacturing, and in particular to a correction punching die, a correction mold, and a sunroof guide rail. Background Technology

[0002] The processing of sunroof guide rails generally consists of three main steps: punching, bending, and straightening. In the punching step, the blank is flat at this time, which facilitates the design of the punched holes. The bending step is used to bend the workpiece to give it a certain curvature, thus adapting it to the shape of the car roof. The straightening step is used to straighten the bent workpiece; the straightening process can be referenced in the earlier application with publication number CN211679411U, "Sunroof Guide Rail Shaping Device."

[0003] However, as sunroof rails are non-standard products, different OEMs can design sunroof rails with different structures for different car models. For example... Figure 1 As shown, this is a sunroof guide rail designed by an OEM. Its biggest difference from the existing structure is that there is a special hole 33 on the sunroof guide rail. This special hole 33 is located directly below the rail edge strip 34, which makes it impossible to process the special hole 33 using conventional punching dies.

[0004] To produce the aforementioned special hole 33, a separate punching die needs to be designed. Using the existing processing method, the punching process would need to be performed twice, each time using two different punching dies. Furthermore, according to feedback from the OEM, with the existing processing method, if the punching location is within the bending deformation zone, the hole may experience diameter deformation or positional displacement during bending due to material compression or stretching. Utility Model Content

[0005] The present invention aims to provide a corrective punching die to solve the technical problems existing in the prior art.

[0006] According to a first aspect embodiment of the present invention, a corrective punching die includes:

[0007] The lower die plate is connected to a positioning support. The positioning support has a contoured surface for placing the workpiece to be corrected. The area of ​​the workpiece to be corrected on the contoured surface is the processing area. The contoured surface is provided with multiple initial positioning parts outside the processing area. The positioning support is divided into a front processing area and a rear processing area along its length. The front processing area is connected to a vertically upward positioning pin within the processing area. The rear processing area is connected to an X-axis telescopic device and a Y-axis telescopic device outside the processing area. The rear processing area is provided with multiple punching die holes.

[0008] The correcting punching die according to the present invention has at least the following beneficial effects: For sunroof guide rails with special structures, a special die is first used in the punching process to punch a small portion of the blank to process positioning holes, special hole positions, and some designed holes. Then, in the bending process, the punched workpiece is bent to obtain the workpiece to be corrected. During correction, the positioning hole of the workpiece to be corrected is first inserted into the positioning pin of the positioning support. Then, multiple initial positioning parts are used to initially position the workpiece to be corrected. Subsequently, the X-axis telescopic device and the Y-axis telescopic device are activated. The two telescopic devices position a portion of the edge of the workpiece to be corrected against the corresponding initial positioning part. This invention provides final positioning for the workpiece to be corrected, replacing the existing technology that relies on the shape of the workpiece for positioning. The pre-processing area corresponds to the punched portion of the workpiece, while the post-processing area corresponds to the unpunched portion. Since the lower die for correction punching integrates a blanking die hole, the remaining design holes can be punched out during the bending correction process, preventing problems such as hole diameter deformation and positional displacement caused by material compression or stretching during bending. Compared with the prior art, this invention not only saves processing steps and reduces costs but also produces design holes that better meet design requirements.

[0009] According to some embodiments of this utility model, the corrective punching die further includes a lower die base plate, which is spaced below the lower die fixed plate. A blanking space is provided between the lower die base plate and the lower die fixed plate, and all punching die holes are connected to the blanking space. Because a blanking space is provided between the lower die base plate and the lower die fixed plate, the punched scrap can fall from the corresponding punching die hole into the blanking space, thus preventing the scrap from blocking the punching die hole.

[0010] According to some embodiments of the present invention, in order to reduce manufacturing costs, the positioning support includes a plurality of lower contour blocks, and the surfaces of all the lower contour blocks together form the contour surface.

[0011] According to some embodiments of the present invention, specifically, the plurality of punching die holes include punching die holes and trimming die holes.

[0012] According to some embodiments of the present invention, in order to better cut off the scrap material, the upper dimension of the punching die hole is smaller than the lower dimension of the punching die hole.

[0013] According to some embodiments of this utility model, specifically, the X-axis telescopic device and the Y-axis telescopic device are any one of a cylinder, a hydraulic cylinder, or an electric push rod.

[0014] According to some embodiments of this utility model, the contoured surface is provided with an engraving position in the processing area, so that the workpiece to be corrected can be processed with engraving information during the bending correction process.

[0015] The calibration mold according to a second aspect embodiment of the present invention includes:

[0016] The aforementioned corrective punching die;

[0017] The upper die for correcting punching moves vertically relative to the lower die for correcting punching. The upper die for correcting punching is provided with an upper die moving plate. The upper die moving plate is connected to a correcting punch and a punching punch. The correcting punch and the contour surface together perform bending correction on the workpiece to be corrected. The punching punch and the blanking die hole together perform material reduction on the workpiece to be corrected.

[0018] According to some embodiments of this utility model, the contoured surface is provided with an engraving position in the processing area, and the upper mold moving plate is provided with an engraving punch corresponding to the engraving position, so that the workpiece to be corrected can be processed with engraving information during the bending correction process.

[0019] According to the third aspect of the present invention, the sunroof guide rail is processed using the aforementioned correction mold.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the workpiece to be corrected provided in an embodiment of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the corrective punching die provided in this embodiment of the utility model;

[0024] Figure 3 yes Figure 2 The top view of the correcting punch lower die shown;

[0025] Figure 4 This is a three-dimensional structural schematic diagram of the calibration mold provided in this embodiment of the utility model;

[0026] Figure 5 yes Figure 4 The side view of the calibration mold shown;

[0027] Figure 6This is a bottom view of the upper die for correcting punching provided in this embodiment of the utility model.

[0028] In the attached diagram: 10-Correcting punch lower die, 100-Lower die base plate, 200-Lower die fixed plate, 300-Positioning support, 110-Padded block, 101-Blanking space, 311-Following surface, 310-Lower following block, 320-Initial positioning part, 31-Design hole, 32-Positioning hole, 33-Special hole position, 30-Workpiece to be corrected, 301-Pre-processing area, 302-Post-processing area. 370-Positioning pin, 350-X-axis telescopic device, 360-Y-axis telescopic device, 330-Punching die hole, 331-Punching die hole, 332-Trimming die hole, 36-Round hole, 35-Edge notch, 340-Engraving position, 20-Correcting punch upper die, 21-Guide post, 22-Limiting post, 23-Upper die moving plate, 24-Correcting punch, 25-Punching punch, 26-Engraving punch. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] like Figure 2 and Figure 3As shown, the corrective punching lower die 10 according to the first aspect embodiment of this utility model includes a lower die base plate 100, a lower die fixed plate 200, and a positioning support 300. The lower die base plate 100 is fixedly connected to the die holder. Since the position of the die holder is fixed, the position of the lower die base plate 100 is also fixed. The surface of the lower die base plate 100 is provided with a plurality of pads 110, which are used to raise the height of the lower die fixed plate 200 so that the lower die fixed plate 200 can be spaced apart above the lower die base plate 100. At this time, a blanking space 101 is provided between the lower die base plate 100 and the lower die fixed plate 200. That is to say, the corrective punching lower die 10 is a fixed die, and its position remains fixed during processing.

[0034] Furthermore, the positioning support 300 is connected to the upper surface of the lower mold plate 200, and the positioning support 300 has a contour surface 311 for placing the workpiece 30 to be corrected. The shape of the contour surface 311 is designed according to the design drawings of the workpiece. If the curvature and / or overall shape of the workpiece 30 to be corrected deviates from the design drawings, then it is necessary to perform correction in the correction mold to process the sunroof guide rail of the preset shape.

[0035] Because the workpiece 30 to be corrected is relatively large, the positioning support 300 is also relatively large. If the positioning support 300 were integrally machined, the production cost would increase, and the yield rate would not be guaranteed. To reduce costs, the positioning support 300 includes multiple lower contour blocks 310, the surfaces of all lower contour blocks 310 forming a contour surface 311. In this embodiment, the positioning support 300 is divided into multiple lower contour blocks 310, each with a corresponding number to avoid errors during assembly. Since the production cost and quality control of a single lower contour block 310 can reach a higher level, this modular manufacturing method can significantly reduce production costs and improve mold quality, and is beneficial for later maintenance and upkeep.

[0036] As is well known, the area of ​​the workpiece 30 to be corrected on the contour surface 311 is the machining area. The contour surface 311 has multiple initial positioning parts 320 outside the machining area. These initial positioning parts 320 can be raised blocks, and their distribution is based on the workpiece's design drawings. Theoretically, when the workpiece 30 to be corrected is placed in the area composed of the multiple initial positioning parts 320, the workpiece 30 can be positioned by all the initial positioning parts 320. However, in actual operation, due to the dimensional deviation of the workpiece 30 itself, it is difficult to achieve positioning solely through the multiple initial positioning parts 320. Existing technologies mostly use this external shape positioning method for final positioning of the workpiece 30, resulting in a certain dimensional deviation still existing in the sunroof guide rail after correction.

[0037] To solve the aforementioned technical problems, the blank needs to be processed step by step. For the sunroof guide rail with a special structure, a special die is first used in the punching process to punch a small portion of the blank to process the positioning hole 32, special hole position 33 and part of the design hole 31. Then, in the bending process, the punched workpiece is bent to obtain the workpiece 30 to be corrected.

[0038] The positioning platform 300 is divided into a pre-processing area 301 and a post-processing area 302 along its length. The pre-processing area 301 corresponds to the punched portion of the workpiece 30 to be corrected, while the post-processing area 302 corresponds to the unpunched portion of the workpiece 30 to be corrected. Since the punching process only punches a small portion of the blank, the size of the pre-processing area 301 is much smaller than the size of the post-processing area 302. A vertically upward positioning pin 370 is connected to the positioning platform 300 within the pre-processing area 301, and the positioning pin 370 matches the positioning hole 32 of the workpiece 30 to be corrected. The post-processing area 302 is connected to an X-axis telescopic device 350 and a Y-axis telescopic device 360 ​​outside the processing area. The X-axis telescopic cylinder and the Y-axis telescopic cylinder include, but are not limited to, pneumatic cylinders, hydraulic cylinders, or electric push rods. The post-processing area 302 also has multiple punching die holes 330. The multiple punching die holes 330 include punching die holes 331 and trimming die holes 332. Punching die holes 331 are used to punch out round holes 36, while trimming die holes 332 are used to punch out edge notches 35.

[0039] It is understood that the punching die hole 330 may also include other types of die holes, such as folding die holes for folding, and is not limited to the above embodiments.

[0040] During calibration, the positioning hole 32 of the workpiece 30 to be calibrated is first inserted into the positioning pin 370 of the positioning platform 300. Then, multiple initial positioning parts 320 are used to initially position the workpiece 30. Subsequently, the X-axis telescopic device 350 and the Y-axis telescopic device 360 ​​are activated. These two telescopic devices position a portion of the edge of the workpiece 30 to be calibrated against the corresponding initial positioning part 320, thereby achieving final positioning of the workpiece 30. Since the positioning hole 32 has been machined in the punching process, it has a unique relative position with the design hole 31. Therefore, the positioning hole 32 can serve as the reference hole for the workpiece 30 to be calibrated. Even if the workpiece itself has dimensional deviations, under the action of the telescopic device, a portion of the edge of the workpiece 30 to be calibrated can maintain contact with a portion of the initial positioning part 320. This portion of the initial positioning part 320 can serve as the positioning reference for the workpiece 30 to be calibrated. Compared with existing technical solutions that rely on the shape of the workpiece 30 to be calibrated for positioning, the positioning scheme of this utility model has a more accurate positioning effect.

[0041] Furthermore, since the lower die 10 for correcting punching integrates a blanking die hole 330, the workpiece 30 to be corrected can be punched out along with the remaining design hole 31 during the bending correction process, thus preventing problems such as hole diameter deformation and positional displacement of the design hole 31 due to material compression or stretching during bending. Compared with the prior art, after applying the correcting die of this utility model, the sunroof guide rail only needs to perform one punching process, one bending process, and one correction process during processing, and each process uses only one set of dies. Compared with the prior art, at least one punching process and one set of punching dies are saved.

[0042] In some embodiments of this utility model, since a blanking space 101 is provided between the lower die base plate 100 and the lower die fixed plate 200, in order to allow the blanking scrap to fall from the corresponding blanking die hole 330 to the blanking space 101, all blanking die holes 330 penetrate the bottom surface of the lower die fixed plate 200 and are connected to the blanking space 101, so as to prevent the blanking scrap from blocking the blanking die hole 330.

[0043] Furthermore, to better handle the scrap material, the upper dimension of the punching die hole 330 is smaller than the lower dimension. In other words, although the cut size of the punching die hole 330 is a standard size, the punching die hole 330 has an enlarged inner cavity, which facilitates the smooth falling of the scrap material and prevents the scrap material from clogging the punching die hole 330.

[0044] In some embodiments of this utility model, the contoured surface 311 is provided with an engraving position 340 in the processing area. The engraving position 340 forms text, graphics, or other information, such as serial numbers or QR codes, through a convex surface to facilitate product traceability. This arrangement allows the workpiece 30 to be engraved during the bending correction process, eliminating the need for a marking step. Since the engraving is performed after the bending process, the engraving information will not be deformed due to the bending process, which is beneficial for the identifier to recognize it.

[0045] In some embodiments of this utility model, the lower die 10 for correcting punching has two correcting stations with identical structures. Each station can accommodate a workpiece 30 to be corrected, allowing two sunroof guide rails to be processed simultaneously in one correcting operation, thereby improving correcting efficiency. It is understood that the number of correcting stations can also be three, four, etc., and is not limited to the embodiments described above.

[0046] like Figures 4 to 6As shown, the correction mold according to the second aspect embodiment of the present invention includes a correction punching lower mold 10 according to the first aspect embodiment of the present invention, and a correction punching upper mold 20. The basic structure of the correction punching upper mold 20 can follow the structure of existing correction upper molds, which is provided with guide post 21, limiting post 22 and upper mold moving plate 23. The guide post 21 is used to guide and connect with the correction punching lower mold 10, the limiting post 22 is used to limit the minimum distance between the upper and lower molds, and the upper mold moving plate 23 is fixedly connected to the punch of the stamping machine so that the correction punching upper mold 20 can move in the vertical direction relative to the correction punching lower mold 10. The upper die moving plate 23 is connected to a straightening punch 24, a punching punch 25 and an engraving punch 26. The straightening punch 24 and the contour surface 311 work together to bend and straighten the workpiece 30 to be straightened. The punching punch 25 and the blanking die hole 330 work together to reduce the material of the workpiece 30 to be straightened. The engraving punch 26 and the engraving position 340 work together to engrave the workpiece 30 to be straightened.

[0047] Since the calibration mold adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0048] According to the third aspect embodiment of the present invention, the sunroof guide rail is processed using the correction mold described in the second aspect embodiment of the present invention.

[0049] Since the sunroof guide rail adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A punching die for straightening, characterized in that, include: The lower die plate (200) is connected to a positioning support (300). The positioning support (300) has a contour surface (311) for placing the workpiece (30) to be corrected. The area of ​​the workpiece (30) to be corrected on the contour surface (311) is the processing area. The contour surface (311) is provided with multiple initial positioning parts (320) outside the processing area. The positioning support (300) is divided into a front processing area (301) and a rear processing area (302) along the length direction. The front processing area (301) is connected to a vertically upward positioning pin (370) within the processing area. The rear processing area (302) is connected to an X-axis telescopic device (350) and a Y-axis telescopic device (360) outside the processing area. The rear processing area (302) is provided with multiple punching die holes (330).

2. The corrective punching die according to claim 1, characterized in that: It also includes a lower die base plate (100), which is spaced below the lower die fixed plate (200). A blanking space (101) is provided between the lower die base plate (100) and the lower die fixed plate (200), and all the punching die holes (330) are connected to the blanking space (101).

3. The corrective punching die according to claim 1, characterized in that: The positioning platform (300) includes a plurality of lower contour blocks (310), and the surfaces of all the lower contour blocks (310) together form the contour surface (311).

4. The corrective punching die according to claim 1, characterized in that: The plurality of said punching die holes (330) include punching die holes (331) and trimming die holes (332).

5. The corrective punching die according to claim 4, characterized in that: The upper dimension of the blanking die hole (330) is smaller than the lower dimension of the blanking die hole (330).

6. The corrective punching die according to claim 1, characterized in that: The X-axis telescopic device (350) and the Y-axis telescopic device (360) are any one of a cylinder, a hydraulic cylinder, or an electric push rod.

7. The corrective punching die according to claim 1, characterized in that: The contoured surface (311) has an engraving position (340) in the processing area.

8. A calibration mold, characterized in that, include: The corrective punching die (10) as described in any one of claims 1 to 6; The upper punching die (20) is movable in the vertical direction relative to the lower punching die (10). The upper punching die (20) is provided with an upper die moving plate (23). The upper die moving plate (23) is connected to a correction punch (24) and a punching punch (25). The correction punch (24) and the contour surface (311) together perform bending correction on the workpiece (30) to be corrected. The punching punch (25) and the blanking die hole (330) together perform material reduction on the workpiece (30) to be corrected.

9. The calibration mold according to claim 8, characterized in that: The contoured surface (311) has an engraving position (340) in the processing area, and the upper mold moving plate (23) has an engraving punch (26) corresponding to the engraving position (340).

10. Sunroof guide rail, characterized in that: The sunroof guide rail is processed using the correction mold as described in any one of claims 8 to 9.

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