progressive die

Abstract

A kind of continuous die, to form guard board support, the continuous die includes upper die and lower die, the continuous die includes transverse sequential distribution blanking station, forming station, flanging station and separation station, the upper die and lower die are provided with two groups of blanking mould core, two groups of forming mould core, two groups of flanging mould core and two groups of shearing mould core about a transverse extension symmetry axis symmetry in corresponding station.The utility model continuous die, with multiple stations, make the force that mould is suffered when clamping more dispersed, and bend structure is symmetrically arranged, force is symmetrical, prolongs the service life of mould.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a progressive mold. Background Technology

[0002] Existing metal guard plate brackets are mostly formed using composite molds, but composite molds have low production efficiency, and because the product structure is complex, the composite mold structure is even more complex. The stamping process is prone to uneven stress, resulting in low manufacturing precision and a short mold life. Utility Model Content

[0003] This invention aims to solve one of the technical problems in related technologies to a certain extent. To achieve this objective, this invention provides a progressive die with high manufacturing precision, high production efficiency, and long service life.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A progressive die for forming a protective plate bracket, the progressive die including an upper die and a lower die, a horizontal plane for placing a strip material is formed between the upper die and the lower die, the horizontal plane defining mutually perpendicular transverse and longitudinal directions, the strip material being movable transversely to form the protective plate bracket, characterized in that: the progressive die includes a blanking station, a forming station, a flanging station and a separating station arranged transversely in sequence, the upper die and the lower die having two sets of blanking die cores, two sets of forming die cores, two sets of flanging die cores and two sets of shearing die cores symmetrical about a transversely extending axis of symmetry at corresponding stations. The die core consists of two sets of blanking die cores that cut the strip into a connecting strip and two protective plate bracket blanks connected to the connecting strip. Two sets of forming die cores are symmetrically arranged near the connecting strip to stamp the symmetrical inner ends of the two protective plate brackets into horizontal portions of a predetermined shape. Two sets of folding die cores are arranged on the symmetrical outer sides of the forming die core to fold the symmetrical outer ends of the two protective plate brackets towards the lower die to form two side wings. Two sets of shearing die cores are arranged on the symmetrical inner sides of the two forming die cores to cut off the connecting strip. Compared to existing technologies, this invention, by employing a continuous die with multiple stations, distributes the force on the die more evenly during mold closing. Furthermore, the symmetrical arrangement of the bending structure ensures symmetrical force distribution, allowing lateral forces to be canceled internally, preventing the generation of overall lateral forces. This improves the manufacturing accuracy of the continuous die, increases production efficiency, and extends its service life.

[0006] As a possible further design, the blanking die includes a first blanking die and a second blanking die for cutting off longitudinal waste in the horizontal section. The first blanking die and the second blanking die are separately disposed from each other. The separation of the blanking die into the first blanking die and the second blanking die avoids excessive local stress, balances the stress on each part of the die, and facilitates the replacement of damaged die.

[0007] As a possible further design, the first blanking die is used to cut off the waste material in the middle section of the longitudinal direction of the horizontal part, the second blanking die is used to cut off the waste material in the inner section of the horizontal part, the blanking die also includes a third blanking die for cutting off the waste material around the side wing, a fourth blanking die for cutting off the waste material in the outer section of the horizontal part, and a fifth blanking die for cutting off the waste material between the connecting strip and the horizontal part. The blanking station includes a first blanking station, a second blanking station and a third blanking station that are continuously distributed. The first blanking die is set at the first blanking station, the second blanking die and the third blanking die are set at the second blanking station, and the fourth blanking die and the fifth blanking die are set at the third blanking station. The first blanking die for the middle section of the horizontal part is set at the first blanking station. The second blanking die for the inner section of the horizontal part and the third blanking die for the side wing are arranged at the second blanking station. The fourth blanking die for the outer section of the horizontal part and the fifth blanking die for the connecting strip are arranged at the second blanking station. This makes the force on each station relatively uniform, and the initial position die is subjected to less force, while the middle position die is subjected to more force, so that the continuous die is subjected to balanced force overall.

[0008] As a possible further design, the progressive die also includes a first positioning hole punching station, which is located before the blanking station. The first positioning hole punching station is equipped with a first positioning hole punching die core for forming the first positioning hole, which includes an intermediate first positioning hole located on the connecting strip. The progressive die provides a positioning hole structure on the connecting strip, forming precise positioning, ensuring accurate positioning of the strip during subsequent forming processes, improving forming accuracy, and reducing the need for positioning process holes on the guard plate support, thus having minimal impact on the shape of the guard plate support.

[0009] As a possible further design, the first positioning hole may also include an outer first positioning hole disposed on the waste material around the side wing, the outer first positioning hole leaving the conveyor belt along with the removed waste material around the side wing after the waste material around the side wing is removed.

[0010] As a possible further design, the connecting strip is also provided with two positioning pieces that bend from both longitudinal sides of the connecting strip toward the lower die. The two positioning pieces are perpendicular to the longitudinal direction. The continuous die is provided with a bending station between the blanking station and the forming station. The bending station is provided with a bending die core for forming the two positioning pieces. The lower die is provided with a positioning punch corresponding to the positioning pieces. The positioning punch extends laterally, and the two positioning pieces are respectively guided and fitted on both longitudinal sides of the positioning punch.

[0011] As a possible further design, the third blanking station is also provided with a second positioning hole punching die core for punching the second positioning hole, which is located on the horizontal part. The second positioning hole is a process hole located on the horizontal part of the guard plate bracket, which can increase the positioning effect and ensure the forming accuracy of the guard plate bracket.

[0012] As a possible further design, the progressive die also includes a side shaping station disposed between the flanging station and the separation station. The side shaping station is equipped with a side shaping slider that can slide in the longitudinal direction. The side shaping slider has a side shaping die core that presses against the side wing. Because the two rows of guard plate supports are symmetrically arranged on the strip, the side shaping sliders are also in symmetrical positions. Since the side shaping sliders slide in the longitudinal alignment direction, the forces acting on the two symmetrically positioned side shaping sliders are completely aligned along a straight line in the longitudinal direction, thus maximally canceling each other out.

[0013] As a possible further design, a punching station is provided between the side forming station and the separation station, where the progressive die enlarges the second positioning hole into a fixing hole for the guard plate bracket at the punching station. By utilizing the position of the fixing hole in the guard plate bracket to set the second positioning hole, and then enlarging it into a fixing hole for the guard plate bracket after the final forming step, precise positioning is provided while minimizing the impact on the shape of the guard plate bracket.

[0014] As a possible further design, an empty station is provided on the rear side of the feeding direction of the forming station, the flanging station, the side shaping station, and the punching station. This makes the force of the continuous die more dispersed and the die strength better.

[0015] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] Figure 1 This utility model relates to a continuously molded protective plate bracket.

[0018] Figure 2 for Figure 1 The diagram shown is a layout diagram of the guard plate bracket on the continuous mold of this utility model.

[0019] Figure 3 This is a perspective view of the upper mold of the continuous mold of this utility model.

[0020] Figure 4 for Figure 3 The front view of the upper mold shown.

[0021] Figure 5 for Figure 3 The top view of the upper mold is shown.

[0022] Figure 6 This is a front view of the lower die of the continuous mold of this utility model.

[0023] Figure 7 for Figure 6 The top view of the lower mold is shown. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0025] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in one embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0026] The continuous die of this invention is intended to produce 50 car skid plate brackets. Figure 1 As shown, the guard plate bracket 50 includes a horizontal portion 52 with a certain width and a certain length, and a side wing 54 perpendicularly connected to one end of the horizontal portion 52 along its length. The length of the horizontal portion 52 is more than three times its width, and its shape is relatively complex. A first fixing hole 522 is provided on the horizontal portion 52 at the end away from the side wing 54, a second fixing hole 524 is provided at the end near the side wing, and a third fixing hole 542 is provided on the side wing 54. The fixing holes are used to form a fixing structure for the guard plate bracket 50 on the vehicle.

[0027] Please refer to Figures 2 to 7This utility model discloses a progressive die (not labeled) for forming the guard plate bracket 50, which includes an upper die 200 and a lower die 400. A horizontal surface (not labeled) for placing a strip of material 500 is formed between the upper die 200 and the lower die 400, and the strip of material 500 is used to form the guard plate bracket 50. After the progressive die is installed on a stamping machine (not shown), the upper die, driven by the stamping machine, performs a reciprocating up-and-down closing action, thereby stamping the strip of material 500 placed between the upper die 200 and the lower die 400 to form the guard plate bracket 50.

[0028] The upper mold 200 includes an upper mold core (not labeled) for forming the guard plate bracket 50, an upper template 220 for fixing the upper mold core, an upper mold pad 222 for providing support for the upper mold core, a guide plate 224 for rough guiding and positioning with the lower mold 400, an outer guide post 226 for fine guiding and engaging with the lower mold 400, an upper mold press plate 228 for fixing the upper mold 200 on the press table, and lifting lugs 230 for facilitating the lifting and transport of the mold.

[0029] The lower die 400 includes a lower die core (unlabeled) for forming the guard plate bracket 50, a lower template 420 for fixing the lower die core, a guide plate 422 for guiding the material strip 500 to move laterally at a predetermined position, a forklift pad 424 for providing forklift action, a die foot 426 for supporting the lower template 420, a lower die press plate 428 for fixing the lower die 400 to the stamping machine, an outer guide sleeve 430 for cooperating with the outer guide post 226 of the upper die 200, a misfeed sensor 432 for detecting the material strip delivery position, an outer guide plate 434 for cooperating with the guide plate 224 of the upper die 200, and a lifting lug 436 for facilitating the lifting and transport of the die.

[0030] Please see Figure 2 , Figure 5 and Figure 7 The continuous die has multiple horizontally arranged stations. The feeding direction of the strip 500 is defined as the horizontal direction on the horizontal plane, and the other vertical direction is defined as the longitudinal direction. The station arrangement places the horizontal portion 52 of the guard plate bracket 50 on the horizontal plane, and the length direction of the horizontal portion 52 is consistent with the longitudinal direction of the horizontal plane. The guard plate brackets 50 are arranged in two horizontally parallel rows on the strip 500, and one row of guard plate brackets 50 and the other row of guard plate brackets 50 have a horizontally extending axis of symmetry. The side wings 54 are located on the outer side of the symmetry and extend towards the lower die 400. The two rows of guard plate brackets 50 are connected to the strip 500 by a connecting strip 56 located at the middle position of the axis of symmetry.

[0031] The continuous die, from the feeding sequence of the strip 500, has the following stations in sequence: first positioning hole punching station 110, blanking station 120, positioning piece bending station 130, forming station 140, flanging station 150, side shaping station 160, punching station 170, and separation station 180.

[0032] At the first positioning hole punching station 110, the progressive die is provided with a first positioning hole punching die core to punch the strip 500, so that the strip 500 forms a central first positioning hole 504 distributed on the connecting strip 56 and an outer first positioning hole 506 distributed in the waste area outside the guard plate bracket 50. The design of the first positioning hole punching die core is as follows: to punch the central first positioning hole 504 and the outer first positioning hole 506, the upper die 200 is provided with a central first positioning hole punch 204, and the lower die 400 is provided with a central first positioning hole die 404; to punch the outer first positioning hole 506, the upper die 200 is provided with an outer first positioning hole punch 206, and the lower die 400 is provided with an outer first positioning hole die 406. See also... Figure 3 To achieve positioning, the upper mold 200 in subsequent workstations is equipped with a central first positioning post 205 and an outer first positioning post 207, which are used to position and cooperate with the central first positioning hole 504 and the outer first positioning hole 506. Because the outer first positioning hole 506 is closest to the outer edge of the strip 500, increasing the distance between the positioning holes provides maximum positioning accuracy. Neither the central first positioning hole 504 nor the outer first positioning hole 506 is distributed on the guard plate bracket 50, reducing the need for positioning process holes on the guard plate bracket 50 and minimizing the impact on the shape of the guard plate bracket 50.

[0033] At the blanking station 120, because the guard plate bracket 50 is relatively long, and in order to save material on the strip 50, the guard plate brackets 50 in the same row are arranged very closely, that is, the gap between two adjacent guard plate brackets 50 is very small. This results in the punch used to cut the waste material in the middle gap being very thin and relatively weak. At the same time, in order to facilitate the replacement of the die core after damage, the blanking die core is divided into multiple segments and distributed. Therefore, the blanking station 120 is designed as three stations: the first blanking station 121, the second blanking station 124, and the third blanking station 127.

[0034] The first unloading station 121 is used to cut off the waste material 521 in the middle section of the horizontal part 52. To achieve this action, the continuous die is provided with a first unloading die core, which includes a first unloading punch 211 provided in the upper die 200 and a first unloading die 411 provided in the lower die.

[0035] The second unloading station 124 is used to remove the waste material 523 from the inner section of the horizontal portion 52 and the waste material 544 from the outer side of the side wing. To achieve this action, the progressive die is provided with a second unloading die core and a third unloading die core. The second unloading die core includes a second unloading punch 212 provided on the upper die 200 and a second unloading die 412 provided on the lower die 400. The third unloading die core includes a third unloading punch 213 provided on the upper die 200 and a third unloading die 413 provided on the lower die 400. After the waste material 544 around the side wing is removed, the outer first positioning hole 506 leaves the strip along with the removed waste material 544 around the side wing.

[0036] The third unloading station 127 is used to remove the waste material 525 between the connecting strip 56 and the horizontal portion 52, and to remove the waste material 527 on the outer side of the horizontal portion 52. To achieve this action, the progressive die includes a fourth unloading die core and a fifth unloading die core. The fourth unloading die core includes a fourth unloading punch 214 provided on the upper die 200 and a fourth unloading die 414 provided on the lower die 400. The fifth unloading die core includes a fifth unloading punch 215 provided on the upper die 200 and a fifth unloading die 415 provided on the lower die 400.

[0037] In addition to blanking, the third blanking station 127 also performs the following two functions: First, when punching the edge of the connecting strip 56, it forms two protruding pieces 564 on the connecting strip 56, the function of which will be explained later. Second, it sets a second positioning hole punching die core to form a second positioning hole 508 on the horizontal part 52 near the side wing 54. To achieve this function, the second positioning hole punching die core includes a second positioning hole punch 216 provided on the upper die 200 and a second positioning hole die 416 provided on the lower die 400. In subsequent stations, to achieve the above positioning function, the upper die 200 is also provided with a second positioning post 209 for cooperating with the second positioning hole 508. The second positioning hole 508 is a process hole provided on the horizontal part 52 of the guard plate bracket 50, which can increase the positioning function during the forming process and ensure the forming accuracy of the guard plate bracket 50.

[0038] from Figure 2 , Figure 5 and Figure 7 As can be seen, the first, second, third, fourth, and fifth blanking mold cores are separated from each other. This avoids excessive local stress, balances the stress on each mold core, and facilitates replacement if a mold core is damaged.

[0039] At the positioning piece bending station 130, the continuous die bends downwards the two protruding pieces 564 formed at the third unloading station, thereby forming two positioning pieces 566 bent from both longitudinal sides of the connecting strip 56 toward the lower die 400. The two positioning pieces 566 are bent perpendicular to the longitudinal direction. The continuous die is provided with bending die cores 253 and 453 at the positioning piece bending station 130 to form the two positioning pieces 566. Furthermore, at a subsequent station, the upper die 200 is provided with a positioning pressure die 255 that pushes the connecting strip 56 downwards, and the lower die 400 is provided with a positioning punch 455 corresponding to the positioning pressure die 255 and the positioning pieces 566 at a subsequent station. The positioning punch 455 extends laterally, and the two positioning pieces 253 are respectively guided and fitted on both longitudinal sides of the positioning punch 455.

[0040] The forming station 140 includes a forming operation station 142 and a forming empty station 144. At the forming operation station 142, the progressive die stamps the horizontal portion 52 of the guard plate support 50 from a flat blank into a predetermined shape. To achieve this action, the progressive die includes forming mold cores, specifically an upper mold forming mold core 268 disposed on the upper die 200 and a lower mold forming mold core 468 disposed on the lower die 400. At the forming empty station 144, the progressive die does not have a forming mold, primarily used to facilitate the placement and fixing of mold cores from the previous and subsequent stations.

[0041] The flanging station 150 includes a flanging operation station 152 and a flanging empty station 154. At the flanging operation station 152, the progressive die includes a folding die core for folding the blank of the side wing 54, which is on the horizontal plane, toward the lower die. The folding die core includes an upper die folding die core 260 disposed on the upper die 200 and a lower die folding die core 460 disposed on the lower die 400. The function of the flanging empty station 154 is the same as that of the aforementioned forming empty station 144, and will not be repeated here.

[0042] The side-forming station 160 includes a side-forming operation station 162 and a side-forming empty station 164. At the side-forming operation station 162, the progressive die further folds the side wing 54, so that the side wing 54 is folded approximately perpendicular to the horizontal plane. To achieve this action, the lower die 200 is provided with a side-forming slider 462, and the side-forming slider 462 is provided with a side-forming mold core (not labeled). The upper die 200 is provided with a wedge-shaped side-forming pressure block 262. After mold closing, the side-forming pressure block 262 presses against the side-forming slider 462, pushing the side-forming slider 462 so that the side-forming slider 462 presses against the side wing 54, ensuring that the side wing 54 is folded into place. Because the two rows of guard plate supports 50 are symmetrically arranged on the material strip 500, the side shaping sliders 462 are also in symmetrical positions. Since the side shaping sliders 462 slide in the longitudinal alignment direction, the forces acting on the two symmetrically positioned side shaping sliders 462 are entirely on a straight line in the longitudinal direction, thus maximally canceling each other out. The function of the side shaping empty station 164 is the same as that of the aforementioned forming empty station 144, and will not be repeated here.

[0043] The punching station 170 includes a punching operation station 172 and a punching empty station 174. At the punching operation station 172, the continuous die punches to form the first fixing hole 522, the second fixing hole 524, and the third fixing hole 542, wherein the first fixing hole 522 is formed by enlarging the second positioning hole 508. The second positioning hole 508 is positioned using the location of the first fixing hole 522 of the guard plate bracket 50, and after the final forming step, the second positioning hole 508 is enlarged to become the first fixing hole 522, thereby providing precise positioning while reducing the impact on the shape of the guard plate bracket 50. At the punching station 172, to perform the punching operation, the upper die 200 is provided with a first fixed hole punch 272 and a second fixed hole punch 274, and the lower die 400 is provided with a first fixed hole die 472 and a second fixed hole die 474; the lower die 400 is also provided with a longitudinally sliding punching slider 464, on which a third fixed hole punch 476 is provided, and the lower die is provided with a third fixed hole die (unlabeled) that longitudinally cooperates with the third fixed hole punch 476 to punch the third fixed hole 542. The punching station 172 has the same function as the aforementioned forming station 144, and will not be described in detail here.

[0044] At the separation station 180, the continuous die cuts the guard plate bracket 50 from the material strip 500 to become a finished part, and simultaneously cuts the connecting strip 56 to become waste material to be recycled. To achieve this action, the continuous die is provided with shearing die cores, which include an upper die shearing die core 266 provided in the upper die 200 and a lower die shearing die core 466 provided in the lower die 400.

[0045] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A progressive die for forming a protective plate bracket, the progressive die comprising an upper die and a lower die, a horizontal plane for placing a strip of material formed between the upper die and the lower die, the horizontal plane defining mutually perpendicular transverse and longitudinal directions, the strip of material being movable transversely to form the protective plate bracket, characterized in that: The continuous die includes a blanking station, a forming station, a flanging station, and a separating station arranged in a transverse sequence. The upper die and the lower die are provided with two sets of blanking die cores, two sets of forming die cores, two sets of folding die cores, and two sets of shearing die cores at corresponding stations about a transversely extending axis of symmetry. The two sets of blanking die cores cut the strip into a connecting strip and two protective plate bracket blanks connected to the connecting strip. The two sets of forming die cores are symmetrically arranged near the connecting strip to stamp the symmetrical inner ends of the two protective plate brackets into horizontal parts with a predetermined shape. The two sets of folding die cores are arranged on the symmetrical outer side of the forming die cores to fold the symmetrical outer ends of the two protective plate brackets toward the lower die to form two side wings. The two sets of shearing die cores are arranged on the symmetrical inner side of the two sets of forming die cores to cut off the connecting strip.

2. The continuous modulus as described in claim 1, characterized in that: The blanking die includes a first blanking die and a second blanking die for cutting off longitudinal waste material in the horizontal section. The first blanking die and the second blanking die are separated from each other.

3. The continuous modulus as described in claim 2, characterized in that: The first blanking die is used to cut off the waste material in the middle section of the longitudinal direction of the horizontal part, the second blanking die is used to cut off the waste material in the inner section of the horizontal part, the blanking die also includes a third blanking die for cutting off the waste material around the side wing, a fourth blanking die for cutting off the waste material in the outer section of the horizontal part, and a fifth blanking die for cutting off the waste material between the connecting strip and the horizontal part. The blanking station includes a first blanking station, a second blanking station and a third blanking station that are continuously distributed. The first blanking die is set at the first blanking station, the second blanking die and the third blanking die are set at the second blanking station, and the fourth blanking die and the fifth blanking die are set at the third blanking station.

4. The continuous modulus as described in claim 1, characterized in that: The progressive die further includes a first positioning hole punching station, which is located before the blanking station. The first positioning hole punching station is provided with a first positioning hole punching die core for forming a first positioning hole. The first positioning hole includes an intermediate first positioning hole located on the connecting strip.

5. The continuous modulus as described in claim 4, characterized in that: The first positioning hole also includes an outer first positioning hole disposed on the waste material around the side wing. After the waste material around the side wing is cut off, the outer first positioning hole leaves the conveyor belt along with the cut-off waste material around the side wing.

6. The continuous modulus as described in claim 1, characterized in that: The connecting strip is also provided with two positioning pieces that bend from both longitudinal sides of the connecting strip toward the lower die. The two positioning pieces are perpendicular to the longitudinal direction. The continuous die is provided with a bending station between the blanking station and the forming station. The bending station is provided with a bending die core for forming the two positioning pieces. The lower die is provided with a positioning punch corresponding to the positioning pieces. The positioning punch extends laterally, and the two positioning pieces are respectively guided and fitted on both longitudinal sides of the positioning punch.

7. The continuous mold as described in claim 3, characterized in that: The third unloading station is also provided with a second positioning hole punching die core for punching the second positioning hole, and the second positioning hole is located on the horizontal part.

8. The continuous mold as described in claim 7, characterized in that: The continuous mold also includes a side shaping station disposed between the flanging station and the separation station. The side shaping station is provided with a side shaping slider, which can slide in the longitudinal direction. The side shaping slider is provided with a side shaping mold core that abuts against the side wing.

9. The continuous mold as described in claim 8, characterized in that: A punching station is provided between the side shaping station and the separation station, and the continuous die enlarges the second positioning hole into a fixing hole for the guard plate bracket at the punching station.

10. The continuous modulus as described in claim 9, characterized in that: Each of the forming station, the flanging station, the side shaping station, and the punching station has an empty station on the rear side of the feeding direction.

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