Side flanging die

Abstract

The utility model discloses a side flanging die, which relates to the technical field of automobile stamping and comprises an upper die holder, a lower die holder and a flanging mechanism. A material pressing core is arranged on the upper die base, a material floating block and a first flanging die are arranged on the lower die base, the first flanging die is fixed relative to the lower die base, and a first cavity used for forming a main body part of a workpiece is formed among the material pressing core, the material floating block and the first flanging die; the flanging mechanism comprises a driving block and a second flanging die, the driving block is arranged on the upper die base and can move along with the upper die base, the second flanging die is arranged on the lower die base and can be driven by the driving block to get close to or get away from the first flanging die, and a second cavity used for forming the side flanging of the workpiece can be formed between the first flanging die and the second flanging die; in the descending process of the upper die base, the driving block drives the second flanging die to be close to the first flanging die, and the second flanging die and the first flanging die form a flanging of a workpiece together. Only one group of movable flanging dies are arranged, so that the die structure is relatively simple, and the development cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile stamping, in particular to a side flanging die. Background Art

[0002] Existing side-flanging dies typically consist of two cam mechanisms. One is the main cam mechanism with the flanging die, typically installed in the upper die assembly. The other is the return cam mechanism with the flanging punch, typically installed in the lower die assembly. The basic process for this type of side-flanging die is as follows: While the punch acts on the workpiece to be flanged, the return cam mechanism drives the flanging punch into the working position. As the die continues to descend, the main cam mechanism drives the flanging die into contact with the workpiece until the flanging die and punch close, completing the workpiece and achieving the side-flanging process.

[0003] This type of mold has two sets of cam mechanisms, resulting in a relatively complex structure. These mechanisms also occupy a significant amount of mold space, making the mold larger and increasing mold development costs. Furthermore, the flanging die and punch are located on the main and return cam mechanisms, respectively, which can easily lead to poor fit between them. To ensure a smooth fit between the flanging die and punch, a significant amount of time is required for mold testing and debugging, reducing mold development efficiency and increasing costs. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a side flanging die with lower development cost.

[0005] The utility model provides a side flanging mold, comprising an upper mold base, a lower mold base and a flanging mechanism; the upper mold base is provided with a pressing core, the lower mold base is provided with a floating block and a first flanging mold, the first flanging mold is fixed relative to the lower mold base, and a first cavity for forming a main body of a workpiece is formed between the pressing core, the floating block and the first flanging mold; the flanging mechanism comprises a driving block and a second flanging mold, the driving block is provided on the upper mold base and can move with the upper mold base, the second flanging mold is provided on the lower mold base and can approach or move away from the first flanging mold under the drive of the driving block, and a second cavity for forming the side flanging of the workpiece can be formed between the first flanging mold and the second flanging mold.

[0006] Optionally, the flanging mechanism also includes a slider, which is connected to the second flanging mold, and the driving block and the slider are respectively formed with a first inclined surface and a second inclined surface relative to each other. In the process of the upper mold base moving toward the lower mold base, the first inclined surface pushes the second inclined surface, driving the slider to drive the second flanging mold to move toward the first flanging mold.

[0007] Optionally, the flanging mechanism further includes a reset mechanism, which is connected to the slider and drives the slider to move away from the first flanging die after the workpiece is formed, thereby causing the second flanging die to reset.

[0008] Optionally, a lifting mechanism is further included, wherein the lifting mechanism is connected to the floating material block, and drives the floating material block to move downward and separate from the workpiece after the workpiece is formed.

[0009] Optionally, the lifting mechanism includes a top block and a lifting member, wherein the top block is connected between the lifting member and the floating material block, and is driven by the lifting member to move the floating material block up and down.

[0010] Optionally, a guide plate is provided on the float block, and a float block mounting hole is opened on the surface of the lower mold base facing the float block. The guide plate is located between the float block and the hole wall of the float block mounting hole on the lower mold base, and the surface of the guide plate away from the float block is flush with the surface of the float block close to the hole wall of the float block mounting hole.

[0011] Optionally, the press core is mounted on the upper die base via a press core mounting piece, and the press core can slide along the press core mounting piece toward or away from the lower die base.

[0012] Optionally, the first end of the press core mounting piece is fixedly connected to the upper die base, and a stop portion is provided at the second end of the press core mounting piece. When the upper die base moves away from the lower die base, the stop portion abuts against the press core to prevent the press core from continuing to move.

[0013] Optionally, a reset connector is provided between the upper die base and the pressing core, one end of the reset connector is fixedly connected to the upper die base, and the other end is fixedly connected to the pressing core. When the upper die base moves toward the lower die base, the length of the reset connector changes, providing a pressing force for the pressing core.

[0014] Optionally, one of the first flanging die and the second flanging die has a recess, and the other of the first flanging die and the second flanging die has a protrusion. When the second flanging die moves toward the first flanging die, the protrusion extends into the recess, clamping the blank of the workpiece to be processed between the protrusion and the recess to form the flanging of the workpiece.

[0015] The side-flanging die provided by this utility model has only one set of movable flanging mechanisms. Compared to side-flanging dies with two sets of movable wedge mechanisms, its die structure is relatively simple, its die size is relatively small, and its die development costs are relatively low. Furthermore, because the first flanging die is fixed in the lower die holder, only the second flanging die needs to be ground and debugged during the debugging process, which can improve the efficiency of die grinding and debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the assembly state of a side flanging mold of the present invention.

[0018] Figure 2 This is a cross-sectional view of an assembled side flanging die of the present invention.

[0019] Figure 3 This is a structural schematic diagram of an upper die base and a pressing core in a side flanging die of the utility model.

[0020] Figure 4 This is a structural schematic diagram of a material pressing core in a side flanging die of the utility model.

[0021] Figure 5 The utility model is a cross-sectional schematic diagram of an upper die base and a pressing core in a side flanging die.

[0022] Figure 6 The utility model is a structural schematic diagram of a lower die base in a side flanging die.

[0023] Figure 7 It is a schematic cross-sectional view of a partial structure of a lower die base in a side flanging die of the utility model.

[0024] Figure 8 for Figure 7 A local enlarged schematic diagram of point A in the middle.

[0025] In the picture:

[0026] Upper die base 10, press core mounting member 11, threaded portion 111, stopper 112, guide portion 113, reset connector 12, first cavity 13;

[0027] Lower die base 20, first flanging die 21, recess 211, float block 22, second molding surface 221, guide plate 223, base 23, lifting mechanism 24, top block 241, lifting member 242, float block mounting hole 25;

[0028] Flanging mechanism 30, driving block 31, first inclined surface 311, slider 32, second inclined surface 321, second flanging die 33, protrusion 331;

[0029] Pressing core 40 , stepped hole 41 , upper hole section 411 , lower hole section 412 , first molding surface 42 . DETAILED DESCRIPTION

[0030] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0031] Unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0032] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.

[0033] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.

[0034] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0035] like Figure 1 and Figure 2As shown, the utility model provides a side flanging die, comprising an upper die base 10, a lower die base 20 and a flanging mechanism 30. A pressing core 40 capable of moving up and down relative to the upper die base 10 is provided in the middle of the upper die base 10. A floating block 22 and a first flanging die 21 are provided on the lower die base 20. The floating block 22 is provided in the middle of the lower die base 20 and is capable of moving up and down relative to the lower die base 20. The first flanging die 21 is located on one side of the floating block 22 and is fixed relative to the lower die base 20. In addition, the pressing core 40, the floating block 22 and the first flanging die 21 together form a first cavity for forming the main body of the workpiece. The flanging mechanism 30 comprises a driving block 31, a slider 32 and a second flanging die 33. The driving block 31 is provided on the upper die base 10 and is capable of moving up and down with the upper die base 10. The slider 32 and the second flanging die 33 are arranged on the lower die base 20 and can be driven by the driving block 31 to move closer to the first flanging die 21 in the left and right directions. During the downward movement of the upper die base 10, the driving block 31 drives the second flanging die 33 to gradually move closer to the first flanging die 21, and together with the first flanging die 21, form a second cavity for forming the flanging of the workpiece. Figures 3 to 5 The pressing core 40 is arranged in the first cavity 13 in the middle of the upper die base 10, and the lower surface of the pressing core 40 forms a first molding surface 42 for forming the upper surface of the workpiece. The pressing core 40 is fixed to the upper die base 10 by a number of pressing core mounting members 11, and can slide up and down relative to the upper die base 10 under the guidance of the pressing core mounting members 11. Specifically, the pressing core mounting member 11 includes a threaded portion 111 located at the first end, a stop portion 112 located at the second end, and a guide portion 113 located between the threaded portion 111 and the stop portion 112. Among them, the diameter of the stop portion 112 is larger than the diameter of the guide portion 113, and the diameter of the guide portion 113 is larger than the diameter of the threaded portion 111.

[0036] Corresponding to the binder core mounting piece 11, a stepped hole 41 is opened on the binder core 40. The stepped hole 41 passes through the binder core 40 in the up and down directions, and includes an upper hole section 411 and a lower hole section 412. The diameter of the upper hole section 411 is smaller than the diameter of the lower hole section 412. At the same time, the diameter of the upper hole section 411 is slightly larger than the diameter of the guide portion 113 of the binder core mounting piece 11, and smaller than the diameter of the stopping portion 112 of the binder core mounting piece 11. When the pressure core mounting part 11 is used to fix the pressure core 40, the pressure core mounting part 11 passes through the stepped hole 41 of the pressure core 40 from bottom to top, and is fixedly connected to the upper mold base 10 through the threaded part 111. At the same time, the guide part 113 of the pressure core mounting part 11 is accommodated in the upper hole section 411 of the stepped hole 41, and the stopping part 112 of the pressure core mounting part 11 is accommodated in the lower hole section 412 of the stepped hole 41. In this way, the guide part 113 can be used to guide the up and down movement of the pressure core 40, and the stopping part 112 can be used to limit the downward sliding stroke of the pressure core 40 relative to the upper mold base 10. When the pressure core 40 slides downward to the limit position, the stopping part 112 is against the step surface of the step hole, preventing the pressure core 40 from continuing to move downward.

[0037] Furthermore, a reset connector 12 is provided between the pressing core 40 and the upper die base 10. The upper end of the reset connector 12 is fixedly connected to the upper die base 10, and the lower end is fixedly connected to the pressing core 40. The reset connector 12 in this embodiment is a plurality of reset springs. These reset springs are sleeved outside the corresponding pressing core mounting members 11. They can not only maintain the connection between the pressing core 40 and the upper die base 10, but also limit the upward movement stroke of the pressing core 40 relative to the upper die base 10. When the pressing core 40 moves upward to the extreme position, the reset connector 12 contracts to the shortest position. It can be understood that the reset connector 12 in this embodiment can also be other components that can achieve the same function, such as a cylinder, a hydraulic cylinder, etc. When the pressing core 40 moves upward relative to the upper die base 10, the length of the reset connector 12 becomes shorter. When the pressing core 40 moves downward relative to the upper die base 10, the length of the reset connector 12 becomes longer to adapt to the movement of the pressing core 40.

[0038] Please also refer to Figures 6 to 8The driving block 31 is located near the edge of the upper die base 10. A first inclined surface 311 is formed on its lower surface. Correspondingly, a second inclined surface 321 is formed on the slider 32. During the downward movement of the upper die base 10, the first inclined surface 311 pushes the second inclined surface 321, driving the slider 32 to move the second flanging die 33 toward the first flanging die 21. Specifically, the slider 32 is mounted on the base 23. The base 23 is provided with a sliding groove that matches the slider 32. The slider 32 is slidably mounted on the lower die base 20 through the base 23. The second flanging die 33 is located on the side of the slider 32 near the first flanging die 21. The side edges of the first flanging die 21 and the side edges of the second flanging die 33 have matching recesses 211 and protrusions 331. As the slider 32 drives the second flanging die 33 toward the first flanging die 21, the protrusion 331 gradually enters the recess 211, forming a second cavity for forming the workpiece flanging between the first flanging die 21 and the second flanging die 33. The workpiece blank to be processed is clamped between the protrusion 331 and the recess 211, thereby forming the side flanging of the workpiece. It is understood that in other embodiments of the present invention, the positions of the recess 211 and the protrusion 331 can be interchanged, as long as a second cavity for forming the workpiece flanging can be formed between the first flanging die 21 and the second flanging die 33.

[0039] Furthermore, a reset mechanism (not shown) is provided between the slider 32 and the lower die base 20. The reset mechanism has two ends connected to the slider 32 and the lower die base 20, respectively, and is used to drive the slider 32 away from the first flanging die 21 after the workpiece is formed, thereby returning the second flanging die 33 to its initial position. The reset mechanism in this embodiment can be a reset spring, a reset cylinder, a reset hydraulic cylinder, etc.

[0040] The float block 22 is mounted within the float block mounting hole 25 in the center of the lower die base 20. Together with the press core 40 and the first flanging die 21, it forms a first cavity for molding the main portion of the workpiece. Specifically, the float block 22 and the first flanging die 21 are spaced horizontally apart. The top surfaces of the float block 22, the first flanging die 21, and the portion of the lower die base 20 between them are each formed with contoured surfaces that align with corresponding portions of the workpiece. Together, these three contoured surfaces form a second molding surface 221 for molding the lower surface of the workpiece. The first molding surface 42 and the second molding surface 221 respectively form the top and bottom surfaces of the first cavity.

[0041] To facilitate removal of the workpiece from the mold after machining, the side flanging mold provided by the present invention also includes a lifting mechanism 24. The lifting mechanism 24 is connected to the float block 22 and is used to drive the float block 22 downward and separate from the workpiece after the workpiece is formed. It also resets the float block 22 after the workpiece is removed. Specifically, the lifting mechanism 24 includes a top block 241 and a lifting member 242. The top block 241 is located within a receiving groove provided below the float block 22 and is fixedly connected between the lifting member 242 and the float block 22, enabling the float block 22 to move up and down under the drive of the lifting member 242. In this embodiment, the material hardness of the top block 241 is greater than that of the float block 22 to prevent the lifter 242 from directly contacting the float block 22, thereby preventing the float block 22 from being pushed out of the float block 22. The lifting member 242 in this embodiment can be a component such as a pneumatic cylinder or hydraulic cylinder that can provide active driving force for the float block 22, thereby driving the float block 22 up and down after the workpiece is formed.

[0042] To ensure the linearity of the float block 22's ascent and descent, guide plates 223 are provided on the sides of the float block 22. These guide plates 223 are secured within a recess at the bottom of the float block 22. The surface of the guide plates 223, facing away from the centerline of the float block 22, is flush with the surface of the upper portion of the float block 22, near the wall of the float block mounting hole 25. In this embodiment, multiple guide plates 223 are arranged at intervals to guide the movement of the float block 22, even with minimal contact area with the sidewalls of the float block mounting hole 25, ensuring excellent linearity.

[0043] When the side flanging die provided by the present invention is in operation, first, the blank is placed on the second molding surface 221 composed of the first flanging die 21, the lower die base 20, and the floating block 22. At this time, the second flanging die 33 is in the initial position and does not contact the workpiece. Then, the upper die base 10 is driven downward by the driving mechanism, and the movable pressure core 40 follows and stops descending after contacting the blank. Then, the upper die base 10 continues to descend, and the pressure core 40 applies pressure to the blank by compressing or shortening the reset connector 12, thereby providing a pressing force on the blank. During this process, the driving block 31 installed on the upper die base 10 descends, pushing the slider 32 to drive the second flanging die 33 gradually close to the first flanging die 21. As the upper die base 10 descends to a closed state, the second flanging die 33 moves to fit the first flanging die 21, clamping the edge of the blank between the first flanging die 21 and the second flanging die 33, completing the press forming of the workpiece.

[0044] After the workpiece is pressed, the driving mechanism drives the upper die base 10 upward, and moves the driving block 31 upward. The slider 32 and the second flanging die 33 are reset under the action of the reset mechanism and are separated from the pressed workpiece; during this process, the reset connecting piece 12 gradually extends, but the pressure core 40 does not move upward under the action of the reset connecting piece 12, and continues to press the workpiece to provide unloading force; as the upper die base 10 gradually rises, the reset connecting piece 12 continues to extend and begins to provide pulling force to the pressure core 40, and the pressure core 40 follows the upward action of the pressure core mounting piece 11 and begins to separate from the workpiece; afterward, the top block 241 of the lifting mechanism 24 is driven downward, driving the floating block 22 downward, so that the floating block 22 is separated from the workpiece. The upper die base 10 continues to move upward to the open state. At this time, since the lower surface of the workpiece is separated from the floating block 22, the workpiece can be smoothly taken out from the side flanging direction. At the same time, the top block 241 of the lifting mechanism 24 is driven to rise, pushing the floating block 22 to rise and return to the initial state, completing the entire pressing process of the side flanging of the workpiece.

[0045] In summary, in the side flanging die of the present invention, since one of the two sets of flanging mechanisms 30 (i.e., the first flanging die 21) is a fixed flanging mechanism 30 and the other set (i.e., the second flanging die 33) is a movable flanging mechanism 30, compared to the side flanging die with two sets of movable flanging mechanisms 30, its mold structure is relatively simple, occupies less space, and the mold development cost is relatively low. In addition, since the first flanging die 21 is fixed in the lower die base 20, only the second flanging die 33 can be ground and debugged during the debugging process, which can improve the grinding and debugging efficiency of the mold and is beneficial to the later mold precision debugging. In addition, the workpiece after stamping can be smoothly removed by the downward movement of the floating block 22, which facilitates demoulding and improves demoulding efficiency.

[0046] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A side flanging die, comprising an upper die base (10), a lower die base (20) and a flanging mechanism (30), characterized in that: The upper die base (10) is provided with a pressing core (40), the lower die base (20) is provided with a floating block (22) and a first flanging die (21), the first flanging die (21) is fixed relative to the lower die base (20), and a first cavity for forming a main body of a workpiece is formed between the pressing core (40), the floating block (22) and the first flanging die (21); The flanging mechanism (30) includes a driving block (31) and a second flanging die (33), wherein the driving block (31) is arranged on the upper die base (10) and can move along with the upper die base (10), and the second flanging die (33) is arranged on the lower die base (20) and can move closer to or farther away from the first flanging die (21) under the drive of the driving block (31), and a second cavity for forming a side flanging of a workpiece can be formed between the first flanging die (21) and the second flanging die (33).

2. The side flanging mold according to claim 1, characterized in that: The flanging mechanism (30) further includes a slider (32), which is connected to the second flanging die (33); the driving block (31) and the slider (32) are respectively formed with a first inclined surface (311) and a second inclined surface (321) relative to each other; when the upper die base (10) moves toward the lower die base (20), the first inclined surface (311) pushes the second inclined surface (321), driving the slider (32) to drive the second flanging die (33) to move toward the first flanging die (21).

3. The side flanging mold according to claim 2, characterized in that: The flanging mechanism (30) further includes a reset mechanism, which is connected to the slider (32) and drives the slider (32) to move away from the first flanging die (21) after the workpiece is formed, thereby causing the second flanging die (33) to reset.

4. The side flanging mold according to claim 1, characterized in that: It also includes a lifting mechanism (24), which is connected to the floating material block (22) and drives the floating material block (22) to move downward and separate from the workpiece after the workpiece is formed.

5. The side flanging die according to claim 4, characterized in that: The lifting mechanism (24) comprises a top block (241) and a lifting member (242). The top block (241) is connected between the lifting member (242) and the floating material block (22), and is driven by the lifting member (242) to move the floating material block (22) up and down.

6. The side flanging mold according to claim 1, characterized in that: A guide plate (223) is provided on the float block (22); a float block mounting hole (25) is provided on the surface of the lower die base (20) facing the float block (22); the guide plate (223) is located between the float block (22) and the hole wall of the float block mounting hole (25) on the lower die base (20); the surface of the guide plate (223) away from the float block (22) is flush with the surface of the float block (22) close to the hole wall of the float block mounting hole (25).

7. The side flanging mold according to claim 1, characterized in that: The pressing core (40) is mounted on the upper die base (10) via a pressing core (40) mounting member (11), and the pressing core (40) can slide along the pressing core (40) mounting member (11) toward or away from the lower die base (20).

8. The side flanging die according to claim 7, characterized in that: The first end of the pressing core (40) mounting member (11) is fixedly connected to the upper die base (10), and the second end of the pressing core (40) mounting member (11) is provided with a stopper (112). When the upper die base (10) moves in a direction away from the lower die base (20), the stopper (112) abuts against the pressing core (40) to prevent the pressing core (40) from continuing to move.

9. The side flanging die according to claim 7, wherein: A reset connector (12) is further provided between the upper die base (10) and the pressing core (40), one end of the reset connector (12) being fixedly connected to the upper die base (10), and the other end being fixedly connected to the pressing core (40). When the upper die base (10) moves toward the lower die base (20), the length of the reset connector (12) changes, thereby providing a pressing force for the pressing core (40).

10. The side flanging mold according to claim 1, characterized in that: One of the first flanging die (21) and the second flanging die (33) has a recess (211), and the other of the first flanging die (21) and the second flanging die (33) has a protrusion (331). When the second flanging die (33) moves toward the first flanging die (21), the protrusion (331) extends into the recess (211), clamping the blank of the workpiece to be processed between the protrusion (331) and the recess (211), thereby forming a flanging of the workpiece.

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