Device and method for forming a stacking structure on a sheet metal part with a flange

Abstract

The present invention discloses a device and method for forming a stacking structure on a sheet metal part with a flange, the device comprises a lower die, a mold core arranged on the lower die, and an upper die for pressing the sheet metal part onto the mold core, at least three stacking structure forming mechanisms are arranged between the lower die and the mold core, each set of the stacking structure forming mechanisms comprises a lifting guide seat arranged on the mold core and having two guide holes, two punches that can be lifted and lowered along the corresponding guide holes, and a punch driving assembly for driving the two punches to alternately extend out of the corresponding guide holes. By adopting the above technical scheme, the shaped sheet metal parts are alternately stacked, and can be stacked and supported by the corresponding convex bumps protruding upward and the convex bumps protruding downward, and the flanges no longer contact the adjacent sheet metal parts, thereby avoiding the problem of extrusion deformation of the flanges of the sheet metal parts during stacking, ensuring the surface quality accuracy of the sheet metal parts, and avoiding the problem of assembly difficulties.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal processing, and in particular to a device and method for forming a stacking structure on a sheet metal with a flange. Background Art

[0002] At present, when sheet metal parts with flanges are stacked, the sheet metal part on top is usually placed directly on the flange of the sheet metal part on the bottom. Due to the heavy weight of the sheet metal parts themselves, the flanges of the sheet metal parts are easily squeezed and deformed during stacking, which affects the surface accuracy and causes problems during assembly of the sheet metal parts.

[0003] Sheet metal parts can be formed with several bulges at the same time during stamping. The applicant hopes to design a new device and method for forming a stacking structure on sheet metal parts with flanges. By shaping some of the bulges, a new sheet metal stacking structure is formed, which can not only reliably stack sheet metal parts, but also avoid extrusion deformation of the flanges of the sheet metal parts. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a device and method for forming a stacking structure on a sheet metal part with a flange.

[0005] The technical solution is as follows:

[0006] A device for forming a stacking structure on a sheet metal part with a flange, comprising a lower die, a die core arranged on the lower die, and an upper die for pressing the sheet metal part onto the die core, characterized in that at least three stacking structure forming mechanisms are arranged between the lower die and the die core, and each set of the stacking structure forming mechanisms comprises a lifting guide seat arranged on the die core and having two guide holes, two punches that can be lifted and lowered along the corresponding guide holes, and a punch driving assembly for driving the two punches to alternately extend out of the corresponding guide holes;

[0007] When one of the punches extends out of the corresponding guide hole, the punch can form a convex bump protruding downward from the sheet metal part into a convex bump protruding upward, while the other punch sinks into the corresponding guide hole.

[0008] The sheet metal part has a number of convex bulges protruding downward in groups of two. With the above structure, the sheet metal part is placed on the device, and one of the punches of each set of stacking structure forming mechanisms shapes one of the downwardly protruding bulges in each group of bulges on the sheet metal part into an upwardly protruding bulge. Then the sheet metal part is removed and replaced with another sheet metal part, and another punch of each set of stacking structure forming mechanisms shapes another downwardly protruding bulge in each group of bulges on the sheet metal part into an upwardly protruding bulge. The sheet metal parts after this shaping are stacked alternately, and can be stacked and supported by the corresponding upwardly protruding bulges and downwardly protruding bulges, and the flanges no longer contact the adjacent sheet metal parts, thereby avoiding the problem of extrusion and deformation of the flanges of the sheet metal parts during stacking, ensuring the surface quality accuracy of the sheet metal parts, and avoiding the problem of assembly difficulties.

[0009] Preferably, the punch driving assembly comprises a special-shaped slider, a driving device for driving the special-shaped slider to slide along the lower die, and two lifting guide rods arranged in parallel, the two punches are respectively fixedly mounted on the upper ends of the corresponding lifting guide rods, and the special-shaped slider is provided with two groups of lifting guide structures consisting of a high-position supporting surface, a transition inclined surface and a low-position supporting surface, the height of the high-position supporting surface is higher than the height of the low-position supporting surface, and the transition inclined surface is inclined downward from the high-position supporting surface to the low-position supporting surface; the two groups of lifting guide structures are arranged in parallel, the high-position supporting surface of one group of lifting guide structures is located at one end close to the driving device, and the low-position supporting surface is located at one end away from the driving device, and the low-position supporting surface of the other group of lifting guide structures is located at one end close to the driving device, and the high-position supporting surface is located at one end away from the driving device; when the lower end portion of one lifting guide rod is supported on the low-position supporting surface of one group of lifting guide structures, the lower end portion of the other lifting guide rod is supported on the high-position supporting surface of the other group of lifting guide structures. By adopting the above structure and newly designing the structure of the special-shaped slider, the two punches of each set of stacking structure forming mechanism can be alternately extended and retracted when the special-shaped slider is pushed outward and pulled back. The structure is simple, stable and reliable, and the design is ingenious.

[0010] As a preferred embodiment, the lifting guide rod includes a main body with a rod-shaped structure and adapted to the guide hole, and a seat body with a block-shaped structure, the upper end of the main body is connected to a corresponding punch, and the seat body is fixed to the lower end of the main body and has a guiding slope that matches the corresponding transition slope. With the above structure, the main body can be lifted and lowered along the guide hole, ensuring the stability and reliability of the fit; at the same time, by setting the guiding slope, the special-shaped slider drives the lifting guide rod to lift and lower more smoothly, avoiding jamming, and improving the stability and reliability of the fit.

[0011] Preferably, the punch includes an integrally formed punch body and a forming boss, the punch body is mounted on the upper end of the main body, and the forming boss is an upwardly protruding boss structure and is located on the upper end surface of the punch body. The above structure is reasonably designed, simple and reliable.

[0012] Preferably, the punch drive assembly further comprises guide blocks located on both sides of the special-shaped slider, the two guide blocks are mounted on the lower die, and form a slideway adapted to the special-shaped slider, and the special-shaped slider can slide along the slideway driven by the drive device. With the above structure, the sliding track of the special-shaped slider can be limited, which is simple and reliable.

[0013] As a preferred embodiment, the driving device is an oil cylinder. The above structure is simple and reliable, low in cost, strong in strength, and ensures the stability of the convex hull shaping.

[0014] As a preferred embodiment, there are four stacking structure forming mechanisms, and the four stacking structure forming mechanisms are symmetrically arranged on the lower mold in pairs. The above structure can ensure the reliability of sheet metal parts stacking.

[0015] As a preferred embodiment: the upper surface of the lower mold is concavely formed with an installation groove, each stacking structure forming mechanism is installed in the installation groove, and the mold core covers the installation groove. The above structure is reasonably designed and easy to assemble and arrange.

[0016] A method for forming a stacking structure on a sheet metal part with a flange comprises the following steps:

[0017] S1: Processing a number of convex hulls protruding downward in groups of two on each sheet metal part;

[0018] S2: Position the sheet metal part on the mold core;

[0019] S3: The upper die cover is closed on the lower die to press the sheet metal part;

[0020] S4: simultaneously starting the punch driving components of each set of stacking structure forming mechanisms, so that one of the punches of each set of stacking structure forming mechanisms extends out of the corresponding guide hole, and forming the corresponding downwardly protruding bulge on the sheet metal part into an upwardly protruding bulge, thereby obtaining a sheet metal part finished product 1;

[0021] S5: Positioning the sheet metal part on the mold core;

[0022] S6: The upper die cover is closed on the lower die to press the sheet metal part;

[0023] S7: Simultaneously start the punch driving components of each set of stacking structure forming mechanisms, so that another punch of each set of stacking structure forming mechanisms extends out of the corresponding guide hole, and forms the corresponding downwardly protruding bulge on the sheet metal part into an upwardly protruding bulge, thereby obtaining a second sheet metal part product;

[0024] S8: Repeat steps S2-S7 until all sheet metal parts are processed.

[0025] By adopting the above method, the finished sheet metal part one and the finished sheet metal part two are stacked alternately, the convex bulge of the finished sheet metal part one protruding upward can be supported and cooperated with the convex bulge of the finished sheet metal part two protruding downward, and the convex bulge of the finished sheet metal part one protruding downward can be supported and cooperated with the convex bulge of the finished sheet metal part two protruding upward, and the flange no longer contacts the adjacent sheet metal parts, thereby avoiding the problem of extrusion and deformation of the flanges of the sheet metal parts when stacking, ensuring the surface quality accuracy of the sheet metal parts, and avoiding the problem of assembly difficulties.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The device and method for forming a stacking structure on a sheet metal part with a flange using the above technical solution are cleverly designed and easy to implement. The shaped sheet metal parts are stacked alternately and can be supported by stacking through the corresponding upwardly protruding bulges and downwardly protruding bulges, and the flanges no longer contact the adjacent sheet metal parts, thereby avoiding the problem of sheet metal parts being easily squeezed and deformed by the flanges when stacking, ensuring the surface quality accuracy of the sheet metal parts and avoiding the problem of assembly difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the matching relationship between the lower mold and the mold core;

[0029] Figure 2 It is a schematic diagram of the cooperation relationship between the stacking structure forming mechanism and the lower die;

[0030] Figure 3 A schematic diagram of one state of the stacking structure forming mechanism;

[0031] Figure 4 A schematic diagram of another state of the stacking structure forming mechanism;

[0032] Figure 5 It is a schematic diagram of the matching relationship between the driving device and the special-shaped slider;

[0033] Figure 6 This is a schematic diagram of stacking finished sheet metal parts one and two. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with embodiments and drawings.

[0035] like Figure 1As shown, a device for forming a stacking structure on a sheet metal part with a flange mainly comprises a lower die 100, a core 200 arranged on the lower die 100, and an upper die for pressing the sheet metal part on the core 200. The core 200 is provided with a plurality of positioning pins 300. When the sheet metal part is placed on the core 200, each positioning pin 300 is respectively inserted into a positioning hole on the sheet metal part, which can play a positioning role on the sheet metal part. When the upper die is covered on the lower die 100, the sheet metal part can be reliably pressed.

[0036] See also Figure 1 and Figure 2 At least three stacking structure forming mechanisms 300 are arranged between the lower mold 100 and the mold core 200. Each set of stacking structure forming mechanisms 300 includes a lifting guide seat 310 arranged on the mold core 200 and having two guide holes 311, two punches 320 that can be lifted and lowered along the corresponding guide holes 311, and a punch driving assembly for driving the two punches 320 to alternately extend out of the corresponding guide holes 311.

[0037] When one of the punches 320 extends out of the corresponding guide hole 311 , the punch 320 can form the convex bump A1 protruding downward of the sheet metal part into the convex bump A1 protruding upward, while the other punch 320 sinks into the corresponding guide hole 311 .

[0038] In this embodiment, the upper surface of the lower mold 100 is concavely formed with an installation groove 110, each stacking structure forming mechanism 300 is installed in the installation groove 110, and the mold core 200 covers the installation groove 110. There are four stacking structure forming mechanisms 300, and the four stacking structure forming mechanisms 300 are symmetrically arranged on the lower mold 100 in pairs.

[0039] See also Figure 3-Figure 5The punch driving assembly includes a special-shaped slider 330, a driving device 340 for driving the special-shaped slider 330 to slide along the lower die 100, and two parallel lifting guide rods 350, wherein the driving device 340 is preferably a cylinder. The two punches 320 are respectively fixedly mounted on the upper ends of the corresponding lifting guide rods 350. The special-shaped slider 330 is provided with two sets of lifting guide structures consisting of a high-position support surface 331, a transition slope 332 and a low-position support surface 333. The height of the high-position support surface 331 is higher than the height of the low-position support surface 333, and the transition slope 332 is inclined downward from the high-position support surface 331 to the low-position support surface 333; the two sets of lifting guide structures are arranged in parallel, the high-position support surface 331 of one set of lifting guide structures is located at an end close to the driving device 340, and the low-position support surface 333 is located at an end away from the driving device 340, and the low-position support surface 333 of the other set of lifting guide structures is located at an end close to the driving device 340, and the high-position support surface 331 is located at an end away from the driving device 340; when the lower end of one lifting guide rod 350 is supported on the low-position support surface 333 of one set of lifting guide structures, the lower end of the other lifting guide rod 350 is supported on the high-position support surface 331 of the other set of lifting guide structures.

[0040] When the driving device 340 pushes the special-shaped slider 330 outward, one of the lifting guide rods 350 is supported on the high-position support surface 331, and the punch 320 thereon extends out of the guide hole 311, and the other lifting guide rod 350 is supported on the low-position support surface 333, and the punch 320 thereon retracts into the guide hole 311.

[0041] The lifting guide rod 350 includes a main body 351 with a rod-shaped structure and adapted to the guide hole 311, and a seat body 352 with a block-shaped structure. The upper end of the main body 351 is connected to the corresponding punch 320, and the seat body 352 is fixed to the lower end of the main body 351 and has a guiding inclined surface 352a that cooperates with the corresponding transition inclined surface 332.

[0042] The punch 320 includes an integrally formed punch body 321 and a forming boss 322 . The punch body 321 is mounted on the upper end of the main body 351 . The forming boss 322 is an upwardly protruding boss structure and is located on the upper end surface of the punch body 321 .

[0043] Furthermore, the punch drive assembly also includes guide blocks 360 located on both sides of the special-shaped slider 330. The two guide blocks 360 are both installed on the lower mold 100 and form a slideway adapted to the special-shaped slider 330. The special-shaped slider 330 can slide along the slideway driven by the driving device 340.

[0044] A method for forming a stacking structure on a sheet metal part having a flange, comprising the following steps:

[0045] S1: Processing a number of convex hulls protruding downward in groups of two on each sheet metal part;

[0046] S2: Positioning the sheet metal part on the mold core 200;

[0047] S3: The upper mold cover is closed on the lower mold 100 to press the sheet metal part;

[0048] S4: Simultaneously start the punch driving components of each set of stacking structure forming mechanisms 300, so that one of the punches 320 of each set of stacking structure forming mechanisms 300 extends out of the corresponding guide hole 311, and forms the corresponding downwardly protruding bulge on the sheet metal part into an upwardly protruding bulge, thereby obtaining a sheet metal finished product A1;

[0049] S5: Positioning the sheet metal part on the mold core 200;

[0050] S6: The upper mold cover is closed on the lower mold 100 to press the sheet metal part;

[0051] S7: Simultaneously start the punch driving components of each set of stacking structure forming mechanisms 300, so that another punch 320 of each set of stacking structure forming mechanisms 300 extends out of the corresponding guide hole 311, and forms the corresponding downwardly protruding bulge on the sheet metal part into an upwardly protruding bulge, thereby obtaining a second sheet metal finished product A2;

[0052] S8: Repeat steps S2-S7 until all sheet metal parts are processed.

[0053] After completion, the finished sheet metal part A1 and the finished sheet metal part A2 are stacked alternately, and the upward protruding bulge of the finished sheet metal part A1 can be supported and cooperated with the downward protruding bulge of the finished sheet metal part A2, and the downward protruding bulge of the finished sheet metal part A1 can be supported and cooperated with the upward protruding bulge of the finished sheet metal part A2, and the flanges no longer contact the adjacent sheet metal parts, thereby avoiding the problem of extrusion and deformation of the flanges when the sheet metal parts are stacked, ensuring the surface quality accuracy of the sheet metal parts, and avoiding the problem of assembly difficulties.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A device for forming a stacking structure on a sheet metal part having a flange, comprising a lower die (100), a die core (200) arranged on the lower die (100), and an upper die for pressing the sheet metal part onto the die core (200), characterized in that: At least three stacking structure forming mechanisms (300) are arranged between the lower die (100) and the die core (200), each set of the stacking structure forming mechanisms (300) comprising a lifting guide seat (310) arranged on the die core (200) and having two guide holes (311), two punches (320) capable of lifting and lowering along corresponding guide holes (311), and a punch driving assembly for driving the two punches (320) to alternately extend out of the corresponding guide holes (311); When one of the punches (320) extends out of the corresponding guide hole (311), the punch (320) can form a convex bump (A1) protruding downward of the sheet metal part into a convex bump (A1) protruding upward, while the other punch (320) sinks into the corresponding guide hole (311); The punch drive assembly comprises a special-shaped slider (330), a drive device (340) for driving the special-shaped slider (330) to slide along the lower die (100), and two parallel lifting guide rods (350). The two punches (320) are respectively fixedly mounted on the upper ends of the corresponding lifting guide rods (350). The special-shaped slider (330) is provided with two sets of lifting guide structures consisting of a high-position support surface (331), a transition inclined surface (332), and a low-position support surface (333). The height of the high-position support surface (331) is higher than the height of the low-position support surface (333). The transition inclined surface (332) is downwardly extending from the high-position support surface (331) toward the low-position support surface (333). The two groups of lifting guide structures are arranged in parallel, wherein the high-position support surface (331) of one group of lifting guide structures is located at one end close to the driving device (340) and the low-position support surface (333) is located at one end away from the driving device (340), and the low-position support surface (333) of the other group of lifting guide structures is located at one end close to the driving device (340) and the high-position support surface (331) is located at one end away from the driving device (340); when the lower end of one lifting guide rod (350) is supported on the low-position support surface (333) of one group of lifting guide structures, the lower end of the other lifting guide rod (350) is supported on the high-position support surface (331) of the other group of lifting guide structures; The lifting guide rod (350) comprises a main body (351) having a rod-shaped structure and adapted to the guide hole (311), and a seat body (352) having a block-shaped structure, wherein the upper end of the main body (351) is connected to a corresponding punch (320), and the seat body (352) is fixed to the lower end of the main body (351) and has a guiding inclined surface (352a) that matches the inclined surface of the corresponding transition inclined surface (332); The punch drive assembly further comprises guide blocks (360) respectively located on both sides of the special-shaped slider (330); the two guide blocks (360) are both mounted on the lower die (100) and form a slideway adapted to the special-shaped slider (330); the special-shaped slider (330) can slide along the slideway under the drive of the drive device (340).

2. The device for forming a stacking structure on a sheet metal part with a flange according to claim 1, characterized in that: The punch (320) comprises an integrally formed punch body (321) and a forming boss (322); the punch body (321) is mounted on the upper end of the main body (351); the forming boss (322) is a boss structure protruding upward and is located on the upper end surface of the punch body (321).

3. The device for forming a stacking structure on a sheet metal part with a flange according to claim 1, characterized in that: The driving device (340) is an oil cylinder.

4. The device for forming a stacking structure on a sheet metal part with a flange according to claim 1, characterized in that: There are four stacking structure forming mechanisms (300) in total, and the four stacking structure forming mechanisms (300) are arranged symmetrically in pairs on the lower mold (100).

5. The device for forming a stacking structure on a sheet metal part with a flange according to claim 1, characterized in that: The upper surface of the lower mold (100) is concavely formed with an installation groove (110), each stacking structure forming mechanism (300) is installed in the installation groove (110), and the mold core (200) covers the installation groove (110).

6. A method for forming a stacking structure on a sheet metal part having a flange, characterized in that: The device for forming a stacking structure on a sheet metal part with a flange according to any one of claims 1 to 5 is used, and the method for forming a stacking structure on a sheet metal part with a flange comprises the following steps: S1: Processing a number of convex hulls protruding downward in groups of two on each sheet metal part; S2: Position the sheet metal part on the mold core (200); S3: The upper die cover is closed on the lower die (100) to press the sheet metal part; S4: simultaneously starting the punch drive components of each set of stacking structure forming mechanisms (300), so that one of the punches (320) of each set of stacking structure forming mechanisms (300) extends out of the corresponding guide hole (311), and the corresponding downwardly protruding bulge on the sheet metal part is formed into an upwardly protruding bulge, thereby obtaining a sheet metal part finished product 1 (A1); S5: Positioning the sheet metal part on the mold core (200); S6: The upper die cover is closed on the lower die (100) to press the sheet metal part; S7: simultaneously starting the punch driving components of each set of stacking structure forming mechanisms (300), so that another punch (320) of each set of stacking structure forming mechanisms (300) extends out of the corresponding guide hole (311), and the corresponding downwardly protruding convex bulge on the sheet metal part is formed into an upwardly protruding convex bulge, thereby obtaining a sheet metal part finished product 2 (A2); S8: Repeat steps S2-S7 until all sheet metal parts are processed.

Images