A window frame assembly cold stamping forming die

Abstract

The utility model relates to a window frame assembly cold stamping forming die, including upper die, lower die, the recessed die of setting on the upper die, the male die of setting on the lower die and first locating block, when closing die, recessed die and male die close and form the cavity, correspond to the hollow position on the window frame assembly, set the positioning convex on the recessed die, set the positioning groove on the male die for the positioning convex to stretch in, first locating block sets at least two, first locating block surrounds and sets the male die, rotation setting reset rotary arm on first locating block, the surface of reset rotary arm towards male die is movable locating face, the initial position of reset rotary arm, movable locating face aligns the outer edge of blank, the utility model discloses through movable locating face on reset rotary arm aligning the outer edge of blank, can accurate positioning blank to the quality of product forming of preset cold stamping position, avoid blank deviation influence the dislocation of product hole position and contour after forming, improve product forming quality.

Description

Technical Field

[0001] This utility model relates to the technical field of cold stamping forming equipment, and in particular to a cold stamping forming mold for window frame assembly. Background Technology

[0002] The window frame assembly is a core structural component of a car door, serving as the door's skeleton and providing fixing points for multiple parts.

[0003] Because the window frame assembly is integrated with multiple components such as the door inner panel, glass guide rail, sealing strip, and rearview mirror, its dimensional accuracy requirements are extremely high. Furthermore, the complex three-dimensional curved shape of the window frame assembly, along with the large hollow structure in the middle, leads to disordered material flow during the forming process, making it very difficult to improve the precision of the cold stamping forming of the window frame assembly.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a cold stamping forming mold for window frame assembly, so as to improve the dimensional accuracy of the window frame assembly after cold stamping.

[0006] The technical solution of this utility model is as follows: The cold stamping die for the window frame assembly includes an upper die, a lower die, a concave die on the upper die, a convex die on the lower die, and a first positioning block. When the die is closed, the concave die and the convex die close to form a cavity. A positioning protrusion is provided on the concave die corresponding to the hollowed-out position on the window frame assembly, and a positioning groove is provided on the convex die for the positioning protrusion to extend into. At least two first positioning blocks are provided, surrounding the convex die. A reset rotating arm is rotatably mounted on the first positioning block. The surface of the reset rotating arm facing the convex die is the movable positioning surface. In the initial position of the reset rotating arm, the movable positioning surface is aligned with the outer edge of the blank.

[0007] A further technical solution is that the side of the first positioning block facing the die is a fixed positioning surface. A gap is provided between the fixed positioning surface and the outer edge of the blank.

[0008] A further technical solution involves providing a second positioning block on the lower die, surrounding the punch. The second positioning block faces the surface of the punch and has a gap between it and the outer edge of the blank.

[0009] A further technical solution involves providing a positioning guide groove on the lower die. The positioning guide groove faces the punch. The first positioning block and the second positioning block are positioned within the positioning guide groove.

[0010] A further technical solution is that the lower mold includes a separate mold base and a positioning seat disposed on the mold base. A base positioning post extends from the mold base, and a positioning hole is provided on the positioning seat for the base positioning post to extend into.

[0011] A further technical solution is that adjustment shims are respectively provided on the surface of the positioning hole contacting the positioning post of the base and the surface of the positioning post contacting the positioning hole.

[0012] A further technical solution involves an upper guide extension portion being provided on the upper mold facing the lower mold. A lower guide groove is provided on the lower mold for the upper guide extension portion to extend into.

[0013] A further technical solution involves providing a lower guide rib within the lower guide groove, perpendicular to its length. A corresponding upper guide groove is provided on the upper guide extension for the lower guide rib to extend into.

[0014] A further technical solution involves providing mounting grooves on both the upper and lower molds. A die and a punch are positioned within these mounting grooves. Balance blocks are positioned perpendicular to the mold closing direction, between the mounting groove and the die, and between the mounting groove and the punch.

[0015] A further technical solution is that the mounting groove gradually expands from the bottom to the opening, i.e., the mounting groove is set with an open opening.

[0016] The beneficial technical effects of this utility model are as follows: (1) The cold stamping die for the window frame assembly in this utility model closes the die and the punch to form a cavity to form the product. For the corresponding hollowed-out position of the product, a positioning protrusion is provided on the die, and a positioning groove is provided on the punch to cooperate with the positioning protrusion. When the die is closed, the positioning protrusion extends into the positioning groove, aligning the die and the punch while partially hindering the flow of the blank, thus improving the quality of the cold stamping. Additionally, the lower die is provided with a first positioning block with a reset rotating arm. In the initial position, the movable positioning face on the reset rotating arm aligns with the outer edge of the blank, accurately positioning the blank to the preset cold stamping position, preventing blank offset from affecting the misalignment of holes and contours on the formed product, thus improving the quality of the formed product. Furthermore, the reset rotating arm can rotate around the first positioning block; when the upper die moves downwards for stamping, the reset rotating arm can rotate away from the die-closing area to avoid interference.

[0017] (2) Furthermore, a fixed positioning surface is provided on the first positioning block, and a second positioning block is provided on the lower mold. The fixed positioning surface and the second positioning block are both left with gaps away from the mold closing area, so as not to interfere with the mold closing action. When placing the blank, the blank is first initially positioned by the fixed positioning surface and the second positioning block, and then guided into the range surrounded by the movable positioning surface for precise positioning, which facilitates the placement of the blank.

[0018] (3) Furthermore, the lower die is divided into a die base and a positioning seat. When adjusting the position of the punch, the position between the die base and the positioning seat can be adjusted relative to each other, or the position between the punch and the positioning seat can be adjusted to improve the range and flexibility of punch position adjustment. Attached Figure Description

[0019] Figure 1 An exploded structural diagram of a cold stamping die for a window frame assembly according to an embodiment of the present disclosure is shown.

[0020] Figure 2 The diagram shows a three-dimensional structural schematic of the upper mold in a cold stamping forming die for a window frame assembly according to an embodiment of the present disclosure, viewed from below.

[0021] Figure 3 A three-dimensional structural schematic diagram of the first positioning block in a cold stamping die for a window frame assembly according to an embodiment of the present disclosure is shown.

[0022] Figure 4 A vertical cross-sectional view of a cold stamping die for a window frame assembly according to an embodiment of the present disclosure is shown.

[0023] Marked in the attached diagram: 1. Upper mold; 11. Mounting groove; 111. Cavity mold; 112. Positioning protrusion; 113. Balance block; 12. Upper guide extension; 121. Upper guide inclined groove; 2. First positioning block; 21. Fixed positioning surface; 22. Reset rotating arm; 221. Movable positioning surface; 222. Limiting part; 23. Waist-shaped hole; 3. Second positioning block; 31. Positioning guide groove; 4. Lower mold; 41. Punch; 411. Positioning groove; 42. Lower guide groove; 421. Lower guide rib; 43. Positioning seat; 431. Positioning hole; 432. Adjusting shim; 44. Mold base; 441. Base positioning post. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0025] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation 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.

[0026] Figure 1 An exploded structural diagram of a cold stamping die for a window frame assembly according to an embodiment of the present disclosure is shown. Figure 2 The diagram shows a three-dimensional structural schematic of the upper mold in a cold stamping forming die for a window frame assembly according to an embodiment of the present disclosure, viewed from below. Figure 3 A three-dimensional structural schematic diagram of the first positioning block 2 in a cold stamping die for a window frame assembly according to an embodiment of this disclosure is shown. Please refer to... Figure 1 , Figure 2 and Figure 3 The cold stamping die for the window frame assembly includes an upper die 1, a lower die 4, a concave die 111 mounted on the upper die 1, a convex die 41 mounted on the lower die 4, and a first positioning block 2. When the die is closed, the concave die 111 and the convex die 41 close to form a cavity to shape the product. Corresponding to the hollowed-out positions on the window frame assembly, the concave die 111 is provided with a positioning protrusion 112, and the convex die 41 is provided with a positioning groove 411 into which the positioning protrusion 112 extends. When the die is closed, the positioning protrusion 112 extends into the positioning groove 411, aligning the concave die 111 and the convex die 41, while also partially hindering the flow of the blank, thus improving the quality of the cold stamping. At least two first positioning blocks 2 are provided, arranged around the convex die 41. A reset rotating arm 22 is rotatably mounted on the first positioning block 2. The surface of the reset rotating arm 22 facing the convex die 41 is a movable positioning surface 221. In the initial position of the reset rotating arm 22, the movable positioning surface 221 is aligned with the outer edge of the blank. In the initial position, the movable positioning surface 221 on the reset rotating arm 22 aligns with the outer edge of the blank, accurately positioning the blank to the preset cold stamping position. This prevents blank offset from affecting the misalignment of holes and contours on the formed product, improving the quality of product forming. Furthermore, the reset rotating arm 22 can rotate around the first positioning block 2. When the upper die 1 descends for stamping, the reset rotating arm 22 can rotate away from the mold closing area to avoid interference. In some embodiments, a clearance hole (not shown in the figure) can be provided on the upper die 1. When the mold closes, the first positioning block 2 enters the clearance hole to avoid interference between the first positioning block 2 and the upper die 1.

[0027] Preferably, the die 111 and the punch 41 are respectively provided with snap-down blocks (not shown in the figure), and the positioning protrusions 112 and positioning grooves 411 are provided on the detachable block to facilitate quick replacement and maintenance of the positioning protrusions 112 and positioning grooves 411. In some embodiments, the detachable block, the die 111 and the punch 41 are respectively provided with countersunk holes (not shown in the figure) and are connected to the upper mold 1 by bolts.

[0028] More preferably, the reset rotating arm 22 and the first positioning block 2 can be connected by a torsion spring, and a limiting part 222 is provided at the end of the reset rotating arm 22 away from the blank. In the initial position, the limiting part 222 abuts against the first positioning block 2 to fix the position of the reset rotating arm 22.

[0029] Please refer to Figure 1 , Figure 2 and Figure 3 The side of the first positioning block 2 facing the die 111 is a fixed positioning surface 21. A gap is provided between the fixed positioning surface 21 and the outer edge of the blank, that is, the fixed positioning surface 21 is far away from the mold closing area and will not interfere with the mold closing action. When placing the blank, the blank is first initially positioned by the fixed positioning surface 21 and then guided into the area surrounded by the movable positioning surface 221 for precise positioning, which facilitates the placement of the blank.

[0030] Preferably, a second positioning block 3 is also provided on the lower die 4 surrounding the punch 41. A gap is provided between the surface of the second positioning block 3 facing the punch 41 and the outer edge of the blank, meaning the second positioning block 3 is far from the mold closing area and will not interfere with the mold closing action. When placing the blank, the fixed positioning surface 21 and the second positioning block 3 cooperate to initially position the blank, and then guide the blank into the area surrounded by the movable positioning surface 221 for precise positioning, simplifying blank placement. The fixed positioning surface 21 and the second positioning block 3 work together to position the blank, limiting the blank from more angles and improving the stability of the blank during initial positioning. Furthermore, the second positioning block 3 does not have complex structures such as the reset rotating arm 22, reducing the cost of the cold stamping forming die for the window frame assembly.

[0031] More preferably, the lower die 4 is further provided with a positioning guide groove 31. The positioning guide groove 31 is positioned towards the punch 41. The first positioning block 2 and the second positioning block 3 are disposed within the positioning guide groove 31. The positioning guide groove 31 guides the first positioning block 2 and the second positioning block away from or close to the blank, preventing the first positioning block 2 and the second positioning block from shifting. In some embodiments, the first positioning block 2 and the second positioning block are respectively provided with oblong holes 23, and screws (not shown in the figure) pass through the oblong holes 23 and connect to the lower die 4, fixing the first positioning block 2 and the second positioning block 3 on the lower die 4.

[0032] Please refer to Figure 1 , Figure 2 and Figure 3The lower mold 4 includes a separate mold base 44 and a positioning seat 43 disposed on the mold base 44. A base positioning post 441 extends from the mold base 44, and a positioning hole 431 is formed on the positioning seat 43 for the base positioning post 441 to extend into. When adjusting the position of the punch 41, the position between the mold base 44 and the positioning seat 43 can be adjusted relative to each other, or the position between the punch 41 and the positioning seat 43 can be adjusted, thereby improving the range and flexibility of punch position adjustment. In some embodiments, the positioning seat 43 and the mold base 44 can be connected by bolts.

[0033] Preferably, adjusting shims 432 are provided on the surfaces of the positioning holes 431 and the base positioning posts 441, respectively. The adjusting shims 432 compensate for manufacturing tolerances and module wear between the positioning holes 431 and the base positioning posts 441, adjusting the gap between them, thereby adjusting the position of the punch 41 on the positioning seat 43 to align with the die 111. Simultaneously, the adjusting shims 432 prevent direct friction between the mold base 44 and the positioning seat 43, reducing wear and extending the service life of the lower mold 4. In some embodiments, the adjusting shims 432 can be made of high-carbon steel. The adjusting shims 432 and the positioning holes 431, as well as the adjusting shims 432 and the base positioning posts 441, can be bonded together with epoxy resin.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 The upper mold 1 is provided with an upper guide extension 12 facing the lower mold 4. The lower mold 4 has a lower guide groove 42 for the upper guide extension 12 to extend into. The side wall of the upper guide extension 12 perpendicular to the mold closing direction and the lower guide groove 42 cooperate to position the relative positions of the upper mold 1 and the lower mold 4, ensuring that the die 111 and the punch 41 are aligned.

[0035] Preferably, a lower guide rib 421 is provided in the lower guide groove 42 perpendicular to its length direction. An upper guide groove 121 is correspondingly provided on the upper guide extension 12 for the lower guide rib 421 to extend into. The guide rib and guide groove work together to position the upper mold 1 and the lower mold 4 relative to each other, while simultaneously improving the structural strength of the lower mold 4 and extending its service life.

[0036] Figure 4 A vertical sectional view of a cold stamping die for a window frame assembly according to an embodiment of this disclosure is shown. Please refer to... Figure 1 , Figure 2 and Figure 4The upper mold 1 and the lower mold 4 are each provided with a mounting groove 11. The die 111 and the punch 41 are disposed within the mounting groove 11. Perpendicular to the mold closing direction, balance blocks 113 are respectively provided between the mounting groove 11 and the die 111, and between the mounting groove 11 and the punch 41. The gap between the upper mold 1 and the die 111, and between the lower mold 4 and the punch 41 can be adjusted by the balance blocks 113, thereby adjusting the position between the punch 41 and the die 111 to align the punch 41 and the die 111.

[0037] Preferably, the mounting groove 11 gradually expands from its bottom towards its opening, meaning it is open. Correspondingly, the cross-section of the balance block 113 along the mold closing direction can be frustum-shaped to increase the contact area between the balance block 113 and the mounting groove 11. By adjusting the position of the balance block 113 along the depth direction of the mounting groove 11 and replacing it with balance blocks 113 of different thicknesses, the relative position between the die 111 and the upper die 1, or the relative position between the punch 41 and the lower die 4, can be easily adjusted.

[0038] The specific workflow of this utility model is as follows: Before cold stamping, the operator can change the thickness of the adjusting shim 432 between the positioning seat 43 and the mold base 44 to adjust the relative position between the positioning seat 43 and the mold base 44, thereby adjusting the relative position between the die 111 and the punch 41. Then, the operator or the feeding mechanism (not shown in the figure) moves the blank onto the punch 41. First, the positioning surface 21 and the second positioning surface are fixed to initially position the blank until the blank contacts the reset rotating arm 22 and is precisely positioned in the preset forming position by multiple movable positioning surfaces 221. Finally, the operator activates the lifting mechanism (not shown in the figure), which drives the upper die 1 to descend and cold stamp the blank. When the die is closed, the positioning protrusion 112 extends into the positioning groove 411. During the descent of the upper die 1, it contacts the reset rotating arm 22, which is pushed to rotate around the first positioning block 2 to avoid interference between the reset rotating arm 22 and the upper die 1. After molding is completed, the upper mold 1 is reset. Under the elastic force of the torsion spring, the reset rotating arm 22 rotates in the opposite direction around the first positioning block 2 to the initial position. At this time, the limiting part 222 abuts against the first positioning block 2.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cold stamping forming die for a window frame assembly, characterized in that, The cold stamping die for the window frame assembly includes an upper die, a lower die, a concave die on the upper die, a convex die on the lower die, and a first positioning block. When the die is closed, the concave die and the convex die close to form a cavity. Corresponding to the hollowed-out position on the window frame assembly, the concave die is provided with a positioning protrusion, and the convex die is provided with a positioning groove for the positioning protrusion to extend into. At least two first positioning blocks are provided, and the first positioning blocks are arranged around the convex die. A reset rotating arm is rotatably provided on the first positioning block. The surface of the reset rotating arm facing the convex die is a movable positioning surface. In the initial position of the reset rotating arm, the movable positioning surface is aligned with the outer edge of the blank.

2. The cold stamping forming die for the window frame assembly as described in claim 1, characterized in that: The side of the first positioning block facing the die is a fixed positioning surface; a gap is provided between the fixed positioning surface and the outer edge of the blank.

3. The cold stamping forming die for the window frame assembly as described in claim 1, characterized in that: A second positioning block is also provided on the lower die surrounding the punch; a gap is provided between the surface of the second positioning block facing the punch and the outer edge of the blank.

4. The cold stamping forming die for the window frame assembly as described in claim 3, characterized in that: The lower die is also provided with a positioning guide groove; the positioning guide groove is oriented toward the punch; the first positioning block and the second positioning block are disposed in the positioning guide groove.

5. The cold stamping forming die for the window frame assembly as described in claim 1, characterized in that: The lower mold includes a mold base and a positioning seat disposed on the mold base; a base positioning post extends from the mold base, and a positioning hole is provided on the positioning seat for the base positioning post to extend into.

6. The cold stamping forming die for the window frame assembly as described in claim 5, characterized in that: The positioning hole contacts the surface of the base positioning post, and adjustment shims are respectively provided on the surface of the base positioning post that contacts the positioning hole.

7. The cold stamping forming die for the window frame assembly as described in claim 1, characterized in that: The upper mold is provided with an upper guide extension facing the lower mold; the lower mold has a lower guide groove for the upper guide extension to extend into.

8. The cold stamping forming die for the window frame assembly as described in claim 7, characterized in that: A lower guide rib is provided in the lower guide groove perpendicular to its length direction; an upper guide groove is correspondingly provided on the upper guide extension for the lower guide rib to extend into.

9. The cold stamping forming die for the window frame assembly as described in claim 1, characterized in that: The upper mold and the lower mold are respectively provided with mounting grooves; the concave mold and the convex mold are disposed in the mounting grooves; perpendicular to the mold closing direction, balance blocks are respectively provided between the mounting groove and the concave mold, and between the mounting groove and the convex mold.

10. The cold stamping forming die for the window frame assembly as described in claim 9, characterized in that: From the bottom of the mounting groove toward the opening of the mounting groove, the mounting groove gradually expands, that is, the mounting groove is open.

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