Bending and stamping die for skylight guide rail

Abstract

The utility model provides a bending and stamping die of a skylight guide rail. The bending and stamping die comprises a guide column, a lower die plate, a male die, a female die and an upper die plate. The lower surface of the male die is provided with an upper forming cambered surface. The upper surface of the female die is provided with a lower forming cambered surface, a containing cavity of the skylight guide rail is defined by the upper forming cambered surface and the lower forming cambered surface, the upper forming cambered surface and the lower forming cambered surface extend in the length direction of the containing cavity, the female die is provided with a first receding groove, the first receding groove is located in the containing cavity, and the first receding groove extends in the length direction of the containing cavity. The first receding groove is used for forming a first guide rail part of the skylight guide rail, the containing cavity is further provided with a containing part, the containing part is used for forming a mounting part of the skylight guide rail, and the first receding groove and the containing part are arranged in the width direction of the containing cavity; in the width direction of the containing cavity, the upper forming arc face and the lower forming arc face are obliquely arranged from top to bottom in the direction from the first receding groove to the containing part. According to the die, the risk of deformation of the skylight guide rail in the bending and stamping process can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a bending and stamping mold for a sunroof guide rail of an automobile. Background Art

[0002] With the rapid development of the economy, cars are becoming more and more popular and entering every household. Cars have added more functions on the basis of providing convenient travel, such as sunroofs. Open the car sunroof and use its superior negative pressure ventilation principle to filter the air in the car to protect the health of the driver and passengers.

[0003] Existing skylights are all electrically opened, so they need to be matched with guide rails. Due to installation requirements, the guide rails need to be made into an arc shape. Currently, the industry uses manual bending to form the arc of the guide rails, which has low precision. Moreover, the guide rails are hollow structures, which can easily cause the hollow part to be flattened, affecting the installation of the rollers.

[0004] A Chinese utility model patent with announcement number CN203936270U discloses a bending stamping die for a car sunroof guide rail, the die comprising an upper die 1, a lower die 2, a punch, and a mounting seat, the mounting seat being provided with an arc-shaped recess, the side surface of the arc-shaped recess being provided with a plurality of grooves matching the shape of the guide rail, the upper surface of the arc-shaped recess being provided with a recess 3 matching the lower end face of the guide rail; the die also comprises a filling strip for preventing the guide rail from being deformed, the size and shape of the filling strip being matched with the hollow cavity of the guide rail; the lower edge of the die bar of the upper die is provided with a positioning groove which is recessed upward and matches the upper end face of the guide rail.

[0005] However, due to the uneven cross-sectional shape of the sunroof guide rail after bending and stamping, the material rebounds unevenly and deforms laterally after stamping, resulting in a deformation gap after the left and right sunroof guide rails are combined. Summary of the invention

[0006] In order to solve the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a bending stamping die for a sunroof guide rail which reduces the risk of deformation.

[0007] In order to achieve the above-mentioned purpose, the bending stamping die of the sunroof guide rail provided by the utility model comprises a guide column, a lower template and an upper template, the sunroof guide rail comprises a mounting portion and a first guide rail portion located on both sides in the width direction; a convex die is arranged on the upper template, and the lower surface of the convex die has an upper forming arc surface; a concave die is arranged on the lower template, and the upper surface of the concave die corresponds to a lower forming arc surface arranged corresponding to the upper forming arc surface, and a receiving cavity for placing the sunroof guide rail can be enclosed between the upper forming arc surface and the lower forming arc surface, and the upper forming arc surface and the lower forming arc surface are both along the receiving cavity The die is provided with a first evacuation groove, the first evacuation groove is located in the accommodating cavity, the first evacuation groove extends along the length direction of the accommodating cavity, the first evacuation groove is used to form the first guide rail portion, the accommodating cavity also has an accommodating portion, the accommodating portion is used to form the mounting portion, the first evacuation groove and the accommodating portion are arranged along the width direction of the accommodating cavity; the upper template and the lower template are connected by a guide column; in the width direction of the accommodating cavity, the upper forming camber surface and the lower forming camber surface are both arranged obliquely from top to bottom along the direction from the first evacuation groove to the accommodating portion.

[0008] As can be seen from the above, due to the uneven force during the bending and stamping of the existing sunroof rails, deformation occurs along the width direction, resulting in deformation gaps near the two ends of the rails after the two rails are combined. The utility model tilts the upper and lower molding arc surfaces of the mold so that the sunroof rail is tilted during bending. During the bending and stamping, the downward punching force is decomposed into a vertical downward punching force and a shaping force in the tilted direction. The shaping force is opposite to the direction of the extension deformation, thereby offsetting the deformation force during the stamping process of the sunroof rail and reducing the risk of deformation of the sunroof rail. When using hard metal, due to its material properties, the track groove is not easy to deform, so when bending and stamping, the upper molding arc surface of the punch and the bottom wall surface of the first give-way groove of the die need to contact the sunroof rail.

[0009] A further solution is that when the sunroof guide rail is bent, the first guide rail portion is located in the first clearance groove and is spaced apart from the bottom wall of the first clearance groove.

[0010] It can be seen from the above that when soft metals such as aluminum or copper are used, in order to prevent the track groove from deforming during the stamping process, the bottom wall surface of the first clearance groove does not contact the sunroof guide rail, thereby avoiding deformation of the track groove.

[0011] A further solution is that a second clearance groove is further provided on the die; in the width direction of the accommodating cavity, the second clearance groove is located on a side of the first clearance groove away from the accommodating portion, and the first clearance groove and the second clearance groove are arranged in parallel. The sunroof guide rail also includes a second guide rail portion located on a side of the first guide rail portion away from the mounting portion, a track groove is formed between the first guide rail portion and the second guide rail portion, and the second clearance groove is used to form the second guide rail portion.

[0012] As can be seen from the above, the design requirements of the sunroof guide rail are met by designing the second clearance groove.

[0013] A further solution is that when the sunroof guide rail is bent, the second guide rail portion is located in the second clearance groove and is spaced apart from the bottom wall of the second clearance groove.

[0014] It can be seen from the above that when soft metals such as aluminum or copper are used, in order to prevent the track groove from deforming during the stamping process, the bottom wall surface of the second clearance groove does not contact the sunroof guide rail, thereby avoiding deformation of the track groove.

[0015] A further solution is that a first elastic block extending along the length direction is provided on the die, the first elastic block is located between the first clearance groove and the accommodating portion, and the first part of the lower molding arc surface is located on the upper surface of the first elastic block.

[0016] It can be seen from the above that the first elastic block can effectively increase the contact area with the sunroof guide rail during the stamping process, so that the linear force is changed to surface force, and the bending curvature is smoother.

[0017] A further solution is that the mounting portion is L-shaped; the receiving portion is recessed downward from the upper surface of the die, and the second portion of the lower molding arc surface is located on the bottom surface of the receiving portion.

[0018] It can be seen from the above that the designed molding groove can meet the installation requirements of the skylight guide rail.

[0019] A further solution is that the upper surface of the first elastic block also includes a first bending surface, which is in contact with the side wall of the mounting portion; and / or the upper surface of the first elastic block also includes a second bending surface, which is in contact with the side wall of the first guide rail portion.

[0020] It can be seen from the above that the provision of the first bending surface and the second bending surface can enhance the designability of the sunroof guide rail, providing more possibilities for improving its performance.

[0021] A further solution is that a second elastic block extending along the length direction is provided on the die, the second elastic block is located between the first clearance groove and the second clearance groove, and the third part of the lower molding arc surface is located on the upper surface of the second elastic block.

[0022] It can be seen from the above that the second elastic block can effectively increase the contact area with the sunroof guide rail during the stamping process, so that the linear force is changed to surface force, and the bending curvature is smoother.

[0023] A further solution is that a buffer rubber block is provided on the male mold, a part of the upper molding arc surface is located on the lower surface of the buffer rubber block, and the buffer rubber block can extend into the molding groove and abut against the mounting portion of the sunroof guide rail.

[0024] It can be seen from the above that the buffer rubber block can effectively prevent the sunroof guide rail from being crushed during the stamping process.

[0025] A further solution is that the inclination angles of the upper forming camber surface and the lower forming camber surface are in the range of 5° to 15°.

[0026] In summary, it can be seen that the bending stamping die of the sunroof guide rail of the utility model can effectively reduce the risk of deformation of the sunroof guide rail during the stamping process, while greatly improving the quality of the bending and forming of the sunroof guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the direction of deformation after stamping in the prior art.

[0028] Figure 2 It is a schematic diagram of the state in which two sunroof guide rails have deformation defects after being combined after being stamped by the sunroof guide rail bending stamping die embodiment of the prior art.

[0029] Figure 3 It is a schematic diagram of the normal state of two sunroof guide rails after being stamped by the sunroof guide rail bending stamping die embodiment of the utility model and then assembled.

[0030] Figure 4 It is a structural diagram of an embodiment of a skylight guide rail bending stamping die of the utility model.

[0031] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0032] Figure 6 It is a cross-sectional view of an embodiment of a skylight guide rail bending and stamping die of the utility model.

[0033] Figure 7 for Figure 5 Enlarged view of point B in the middle.

[0034] Figure 8 It is an exploded view of the punch of the skylight guide rail bending stamping die embodiment of the utility model.

[0035] Fig. 9 It is an exploded view of the female die of the skylight guide rail bending stamping die embodiment of the utility model. DETAILED DESCRIPTION

[0036] See also Figures 4 to 6, the sunroof guide rail includes a mounting portion 42, a first guide rail portion 40 and a second guide rail portion 41 located on both sides in the width direction, and a track groove is formed between the first guide rail portion 40 and the second guide rail portion 41. The sunroof guide rail bending stamping die provided in this embodiment includes an upper template 1, a lower template 2 and two guide columns 3, and the upper template 1 and the lower template 2 are connected by the two guide columns 3. A punch 5 is provided on the upper template 1, and the lower surface of the punch 5 has an upper molding arc surface 50. A die 6 is provided on the lower template 2, and the upper surface of the die 6 is correspondingly provided with a lower molding arc surface 60 corresponding to the upper molding arc surface 50. An accommodating cavity for placing the sunroof guide rail 4 can be formed between the upper molding arc surface 50 and the lower molding arc surface 60. Both the upper molding arc surface 50 and the lower molding arc surface 60 extend along the length direction of the accommodating cavity of the sunroof guide rail 4. The mounting portion 42 is L-shaped, and the die 6 is provided with a receiving portion 67, a first clearance groove 61, and a second clearance groove 62. The receiving cavity of the sunroof guide rail 4 includes the receiving portion 67, the first clearance groove 61, and the second clearance groove 62 arranged along the width direction of the receiving cavity. The first clearance groove 61 is used to form the first guide rail portion 40, the second clearance groove 62 is used to form the second guide rail portion 41, and the receiving portion 67 is used to form the mounting portion 42. In this embodiment, the receiving portion 67 is recessed downward from the upper surface of the die 6. In the width direction of the receiving cavity of the sunroof guide rail 4, the upper molding arc surface 50 and the lower molding arc surface 60 are both inclined from top to bottom along the direction from the receiving portion 67 to the first clearance groove 61, and the inclination angle of the upper molding arc surface 50 and the lower molding arc surface 60 is in the range of 5° to 15°.

[0037] Optionally, the track groove is arranged on the first clearance groove 61 , and the second clearance groove 62 can be determined according to the design requirements of the sunroof guide rail 4 .

[0038] The sunroof guide rail 4 is made of soft metal materials such as aluminum, copper or aluminum alloy. In order to prevent the track groove of the sunroof guide rail 4 from being deformed, when the sunroof guide rail 4 is bent, the first guide rail portion 40 is located in the first clearance groove 61 and is spaced apart from the bottom wall of the first clearance groove 61, and the second guide rail portion 41 is located in the second clearance groove 62 and is spaced apart from the bottom wall of the second clearance groove 62. When the sunroof guide rail 4 is made of hard metal materials, since it is not easy to deform, the bottom wall surface of the first clearance groove 61 needs to contact the first guide rail portion 40 during the stamping process, and the bottom wall surface of the second clearance groove 62 needs to contact the second guide rail portion 41 during the stamping process to complete the bending of the sunroof guide rail 4.

[0039] See also Figure 6The die 6 is provided with a first mounting groove 63 and a second mounting groove 64, both of which extend in the first horizontal direction. A first elastic block 65 is embedded in the first mounting groove 63, and a second elastic block 66 is embedded in the second mounting groove 64. The first elastic block 65 is located between the receiving portion 67 and the first clearance groove 61, and the second elastic block 66 is located between the first clearance groove 61 and the second clearance groove 62. The first part of the lower molding arc surface 60 is located on the upper surface of the first elastic block 65, the second part of the lower molding arc surface 60 is located on the bottom surface of the receiving portion 67, and the third part of the lower molding arc surface 60 is located on the upper surface of the second elastic block 66. Optionally, the bottom surface of the receiving portion 67 is coplanar with the upper surface of the first elastic block 65. When the skylight guide rail 4 is made of soft metal material, the skylight guide rail 4 can be bent and formed by the first elastic block 65, the second elastic block 66, and the punch 5 contacting the skylight guide rail 4 together.

[0040] The upper surface of the first elastic block 65 further includes a first bending surface 651 and a second bending surface 652. The first bending surface 651 is close to the accommodating portion 67 and fits with the side wall of the mounting portion 42 during stamping. The second bending surface 652 is close to the first clearance groove 61 and fits with the side wall of the first guide rail portion 40 during stamping. Optionally, whether to design the first bending surface 651 or the second bending surface 652 is determined according to the design requirements of the sunroof guide rail 4. Optionally, a bending surface may also be provided on the second elastic block 66.

[0041] See also Figure 5 A third mounting groove 51 is provided on the punch 5, and the third mounting groove 51 extends along the first horizontal direction. A buffer rubber block 52 is embedded in the third mounting groove 51, and a portion of the upper molded arc surface 50 is located on the lower surface of the buffer rubber block 52. The buffer rubber block 52 can extend into the accommodating portion 67 and abut against the mounting portion 42 of the sunroof guide rail 4 during the stamping process.

[0042] If the sunroof guide rail 4 to be punched is relatively long, the sunroof guide rail 4 can be bent and formed by means of segmented punching.

[0043] In summary, the bending stamping die of the sunroof guide rail of the utility model can effectively reduce the risk of deformation of the sunroof guide rail 4 during the stamping process, while greatly improving the quality of the bending and forming of the sunroof guide rail.

[0044] Finally, it should be emphasized that 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 changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bending stamping die for a sunroof guide rail, wherein the sunroof guide rail comprises a mounting portion and a first guide rail portion located on both sides in the width direction; The bending stamping die comprises: An upper mold plate, wherein a convex mold is arranged on the upper mold plate, and a lower surface of the convex mold has an upper molding cambered surface; A lower template, wherein a concave mold is arranged on the lower template, and the upper surface of the concave mold corresponds to a lower molding arc surface arranged corresponding to the upper molding arc surface, and a receiving cavity for placing the sunroof guide rail can be enclosed between the upper molding arc surface and the lower molding arc surface, and the upper molding arc surface and the lower molding arc surface both extend along the length direction of the receiving cavity, and a first giving way groove is arranged on the concave mold, and the first giving way groove is located in the receiving cavity, and the first giving way groove extends along the length direction of the receiving cavity, and the first giving way groove is used to form the first guide rail part, and the receiving cavity further has an accommodating part, and the accommodating part is used to form the mounting part, and the first giving way groove and the accommodating part are arranged along the width direction of the accommodating cavity; A guide column, through which the upper template and the lower template are connected; Features: In the width direction of the accommodating cavity, the upper molding arc surface and the lower molding arc surface are both arranged to be inclined from top to bottom along the direction from the first clearance groove to the accommodating portion.

2. The bending stamping die for the sunroof guide rail according to claim 1, characterized in that: When the sunroof guide rail is bent, the first guide rail portion is located in the first clearance groove and is spaced apart from the bottom wall of the first clearance groove.

3. The bending stamping die for the sunroof guide rail according to claim 1, characterized in that: The die is also provided with a second relief groove; In the width direction of the accommodating cavity, the second paving groove is located on a side of the first paving groove away from the accommodating portion, and the first paving groove and the second paving groove are arranged in parallel; The sunroof guide rail also includes a second guide rail portion located on a side of the first guide rail portion away from the mounting portion. The first guide rail portion and the second guide rail portion form the track groove, and the second clearance groove is used to form the second guide rail portion.

4. The bending stamping die for the sunroof guide rail according to claim 3, characterized in that: When the sunroof guide rail is bent, the second guide rail portion is located in the second clearance groove and is spaced apart from the bottom wall of the second clearance groove.

5. The bending stamping die for the sunroof guide rail according to any one of claims 1 to 4, characterized in that: The die is provided with a first elastic block extending along the length direction, the first elastic block is located between the first clearance groove and the accommodating portion, and the first part of the lower molding arc surface is located on the upper surface of the first elastic block.

6. The bending stamping die for the sunroof guide rail according to claim 5, characterized in that: The mounting portion is L-shaped; The accommodating portion is recessed downward from the upper surface of the concave mold, and the second portion of the lower molding arc surface is located on the bottom surface of the accommodating portion.

7. The bending stamping die for the sunroof guide rail according to claim 6, characterized in that: The upper surface of the first elastic block further includes a first bending surface, and the first bending surface is in contact with the side wall of the mounting portion; and / or, The upper surface of the first elastic block further includes a second bent surface, and the second bent surface is in contact with the side wall of the first guide rail portion.

8. The bending stamping die for the sunroof guide rail according to claim 3 or 4, characterized in that: The die is provided with a second elastic block extending along the length direction, the second elastic block is located between the first paving groove and the second paving groove, and the third portion of the lower molding arc surface is located on the upper surface of the second elastic block.

9. The bending stamping die for the sunroof guide rail according to claim 6, characterized in that: A buffer rubber block is arranged on the male mold, a part of the upper molding arc surface is located on the lower surface of the buffer rubber block, and the buffer rubber block can extend into the accommodating portion and abut against the mounting portion of the sunroof guide rail.

10. The bending stamping die for the sunroof guide rail according to any one of claims 1 to 4, characterized in that: The inclination angles of the upper molding camber surface and the lower molding camber surface are in the range of 5° to 15°.

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