Stamping assembly and stamping die having the same

Abstract

The present application relates to a stamping assembly and a stamping die having the same, wherein the stamping assembly includes: a fixed seat, a first outer die mechanism and a driving mechanism, wherein the fixed seat is fixedly arranged in the lower die; the first outer die mechanism includes a fixedly connected molding structure and a locking structure, and the first outer die mechanism is rotatably connected to the fixed seat; the driving mechanism is slidably arranged in the lower die along a first direction. The first outer die mechanism is rotatably connected to the fixed seat to realize gradual extrusion of the part to be bent, so that the deformation area of ​​the part to be bent is larger, that is, the bending area is larger. In the case of gradual extrusion, the deformation is more uniform and the bending accuracy is higher. The present application effectively solves the problem in the prior art that the bending area of ​​the bending part has poor accuracy due to the need for multiple bending of the bending part with a large angle.

Description

Technical Field

[0001] The present application relates to the technical field of stamping dies, and in particular to a stamping assembly and a stamping die having the same. Background Art

[0002] As an important means of production, stamping products have diverse structures, complex types, and large demand. The corresponding types of production molds are also numerous. Affected by factors such as the performance requirements (including the direction of the stamping texture) of the stamped products and process needs, the requirements for stamping molds are getting higher and higher. Conventional mold settings need to be comprehensively selected based on the structural characteristics, performance, and needs of the stamped products themselves.

[0003] In the prior art, when faced with large-angle bending, multiple bending processes are often used to meet the requirements. However, since the bent parts have a certain degree of deformation and the position of the deformation cannot be completely controlled, this leads to deviations in positioning and fixation during the multiple bending processes, resulting in the final product being able to meet the processing requirements only in the non-bending area, while the shape accuracy of the bending area is relatively poor, especially the connection position accuracy of different bending points is poor, which affects the overall quality of the bent parts. Summary of the invention

[0004] The present application provides a stamping assembly and a stamping die having the same, so as to solve the problem in the prior art that a large-angle bending part needs to be bent multiple times, resulting in poor accuracy of the bending area of ​​the bending part.

[0005] In the first aspect, the present application provides a stamping assembly, which is applied to a stamping mold. The stamping mold includes an upper mold and a lower mold, including: a fixed seat, a first outer mold mechanism and a driving mechanism. The fixed seat is fixedly arranged in the lower mold; the first outer mold mechanism includes a fixedly connected molding structure and a locking structure, and the first outer mold mechanism is rotatably connected to the fixed seat; the driving mechanism can be slidably arranged in the lower mold along a first direction; when the upper mold and the lower mold are closed, the upper mold pushes the driving mechanism to contact the locking structure, and the locking structure drives the first outer mold mechanism to rotate so that the molding structure gradually squeezes the part to be bent. After the upper mold and the lower mold are closed, the driving mechanism is locked with the locking structure.

[0006] In some embodiments of the present application, the stamping assembly further includes a reset mechanism, the reset mechanism includes a first reset structure, and the first reset structure pushes the locking structure along a first direction close to the upper mold.

[0007] In some embodiments of the present application, the fixed seat is provided with a sliding cavity extending along a first direction, the first reset structure includes a pressure block and a first elastic member, the pressure block is slidably disposed in the sliding cavity, the first elastic member applies a force to the pressure block approaching the upper mold, and the end of the pressure block away from the first elastic member is against the first outer mold mechanism.

[0008] In some embodiments of the present application, the reset mechanism further includes a second reset structure, which is disposed in the lower mold, and the second reset structure pushes the driving mechanism along the first direction close to the upper mold.

[0009] In some embodiments of the present application, the fixing seat is provided with an arc-shaped cavity, and the first outer mold mechanism is provided with a roller structure in a cylindrical shape, and the roller structure is rotatably disposed in the arc-shaped cavity.

[0010] In some embodiments of the present application, the fixed seat is provided with a first limit surface and a second limit surface, and the first limit surface and the second limit surface are respectively connected to the inner cavity surface of the arc-shaped cavity, and the first outer mold mechanism is provided with a first mating surface and a second mating surface, and the first mating surface and the second mating surface are respectively connected to the cylindrical surface of the roller structure, and the angle formed by the first limit surface and the second limit surface is greater than the angle formed by the first mating surface and the second mating surface.

[0011] In some embodiments of the present application, the locking structure includes a first locking surface and a second locking surface set at an angle, and the driving mechanism includes a snap-fit ​​structure, the snap-fit ​​structure includes a first snap-fit ​​surface and a second snap-fit ​​surface set at an angle, and when the first locking surface contacts the first snap-fit ​​surface, the second locking surface contacts the second snap-fit ​​surface to achieve locking of the driving mechanism and the locking structure.

[0012] In some embodiments of the present application, the first outer mold mechanism is an integrally molded structure.

[0013] In some embodiments of the present application, the molding structure is disposed on the first locking surface, and the molding structure is a U-shaped cavity.

[0014] In the second aspect, the present application provides a stamping die, which includes an upper die, a lower die and a stamping assembly. The stamping assembly is the above-mentioned stamping assembly, and the stamping assembly is driven by the upper die and the lower die to stamp the part to be bent.

[0015] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0016] The embodiment of the present application provides a stamping assembly and a stamping die having the same, wherein the stamping assembly includes: a fixed seat, a first outer die mechanism and a driving mechanism, wherein the fixed seat is fixedly arranged in the lower die; the first outer die mechanism includes a fixedly connected forming structure and a locking structure, and the first outer die mechanism is rotatably connected to the fixed seat; the driving mechanism can be slidably arranged in the lower die along a first direction; when the upper die and the lower die are closed, the upper die pushes the driving mechanism to contact the locking structure, and the locking structure drives the first outer die mechanism to rotate, so that the forming structure gradually squeezes the part to be bent, and after the upper die and the lower die are closed, the driving mechanism is locked with the locking structure. The first outer die mechanism is rotatably connected to the fixed seat to realize the gradual extrusion of the part to be bent, so that the deformation area of ​​the part to be bent is larger, that is, the bending area is larger, and in the case of gradual extrusion, the deformation is more uniform and the bending accuracy is higher. The present application effectively solves the problem in the prior art that the bending part with a large angle needs to be bent multiple times, resulting in poor accuracy of the bending area of ​​the bending part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 A partial cross-sectional schematic diagram of a stamping assembly provided in an embodiment of the present application is shown;

[0021] Figure 2 Shows Figure 1 A partial cross-sectional schematic diagram of a stamping component in a state to be bent;

[0022] Figure 3 Shows Figure 1 A schematic diagram of the main view of the stamping component in a state to be bent;

[0023] Figure 4 Shows Figure 1 Exploded schematic diagram of stamping assembly;

[0024] Figure 5 Shows Figure 4 A schematic diagram of the three-dimensional structure of the first outer mold mechanism of the stamping assembly;

[0025] Figure 6 A cross-sectional schematic diagram of a stamping die provided in an embodiment of the present application when ready for stamping is shown;

[0026] Figure 7 Shows Figure 6 A schematic cross-sectional view of a stamping die during the stamping process;

[0027] Figure 8 A schematic diagram of the stamping process of the parts to be stamped is shown.

[0028] The above drawings contain the following reference numerals:

[0029] 11. upper mold; 12. lower mold; 20. fixed seat; 21. sliding cavity; 22. arc cavity; 23. first limiting surface; 24. second limiting surface; 30. first outer mold mechanism; 31. molding structure; 32. locking structure; 321. first locking surface; 322. second locking surface; 33. roller structure; 34. first matching surface; 35. second matching surface; 40. driving mechanism; 41. snap-fit ​​structure; 411. first snap-fit ​​surface; 412. second snap-fit ​​surface; 50. reset mechanism; 51. first reset structure; 511. pressing block; 512. first elastic Part; 52, second reset structure; 521, push block; 522, second elastic part; 60, first inner mold mechanism; 61, inner mold core; 62, sliding seat body; 621, engaging cavity; 622, mounting hole; 623, first inclined surface; 63, fixed seat body; 631, slideway; 64, third elastic part; 70, fixed top block; 71, second inclined surface; 72, third inclined surface; 80, second bending assembly; 81, second outer mold mechanism; 82, second inner mold mechanism; 90, third bending assembly; 91, third outer mold mechanism; 92, third inner mold mechanism; 100, part to be bent. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0032] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0033] like Figures 1 to 4As shown, in the first aspect, an embodiment of the present application provides a stamping assembly, which is applied to a stamping die. The stamping die includes an upper die 11 and a lower die 12, including: a fixed seat 20, a first outer die mechanism 30 and a driving mechanism 40. The fixed seat 20 is fixedly arranged in the lower die 12; the first outer die mechanism 30 includes a fixedly connected molding structure 31 and a locking structure 32, and the first outer die mechanism 30 is rotatably connected to the fixed seat 20; the driving mechanism 40 can be slidably arranged in the lower die 12 along a first direction; when the upper die 11 and the lower die 12 are closed, the upper die 11 pushes the driving mechanism 40 to contact the locking structure 32, and the locking structure 32 drives the first outer die mechanism 30 to rotate, so that the molding structure 31 gradually squeezes the part to be bent 100, and after the upper die 11 and the lower die 12 are closed, the driving mechanism 40 is locked with the locking structure 32. The first outer mold mechanism 30 is rotatably connected to the fixed seat 20 to realize the gradual extrusion of the part to be bent 100, so that the deformation area of ​​the part to be bent 100 is larger, that is, the bending area is larger. In the case of gradual extrusion, the deformation is more uniform and the bending accuracy is higher. The present application effectively solves the problem in the prior art that the bending area of ​​the bending part has poor accuracy due to the need for multiple bending of the bending part with a large angle. Such a setting can also effectively eliminate the creases at the bending position of the bending area caused by multiple bending. Through such a setting, the creases on the appearance surface can be eliminated in the final molding stage.

[0034] It should be noted that, due to the long plates on both sides of the bending area, it is difficult to achieve one-time forming during the bending process, especially in precision stamping dies, because the relative displacement of the upper and lower dies during the mold closing process is very small, and cannot meet the horizontal displacement of the long-distance plate during the bending process, so multiple bendings are required, and such a setting is also conducive to the placement of the part 100 to be bent. The present application uses the setting of the stamping assembly to enable the part 100 to be bent to be bent according to a certain procedure according to the setting of the forming structure 31 during the final forming, and the accuracy of the bending process is more reliable. The driving mechanism 40 presses the first outer mold mechanism 30 downward along the first direction to rotate it, and finally realizes the extrusion of the part 100 to be bent. The first direction is the movement direction of the upper and lower molds for closing and opening.

[0035] like Figures 1 to 4As shown, in the technical solution of this embodiment, the stamping assembly also includes a reset mechanism 50, and the reset mechanism 50 includes a first reset structure 51. The first reset structure 51 pushes the locking structure 32 in the direction close to the upper mold 11 along the first direction. The first reset structure 51 is used to push the locking structure 32 to push the locking structure 32 to rotate, so as to separate the first outer mold mechanism 30 from the part to be bent 100, and realize the function of automatic separation and reset, so as to facilitate the next bending. In some optional embodiments, the first reset structure 51 can be set as a torsion spring, and the torsion spring is twisted during the bending process to realize the storage of elastic potential energy. After the upper mold 11 releases the restriction on the driving mechanism 40, the torsion spring releases the elastic potential energy and converts it into elastic force, so that the first outer mold mechanism 30 rotates in the opposite direction of the bending, thereby realizing the separation of the first outer mold mechanism 30 from the part to be bent 100, and automatic reset.

[0036] like Figures 1 to 4 As shown, in the technical solution of this embodiment, the fixed seat 20 is provided with a sliding cavity 21 extending along the first direction, and the first reset structure 51 includes a pressing block 511 and a first elastic member 512. The pressing block 511 is slidably arranged in the sliding cavity 21. The first elastic member 512 applies a force close to the upper mold 11 to the pressing block 511, and the end of the pressing block 511 away from the first elastic member 512 is against the first outer mold mechanism 30. The setting of the sliding cavity 21 is used to position the pressing block 511 and the first elastic member 512, and limit the sliding direction and action of the pressing block 511. The sliding cavity 21 is arranged inside the fixed seat 20, and the structure is more compact and the application effect is better. The first elastic member 512 can be a spring, and the spring and the pressing block 511 can be fixedly connected or in contact, and can achieve push. The selection of the spring is relatively simple, the reliability is strong, it is convenient for push, and the force of push can be controlled, so as to achieve more accurate automatic reset.

[0037] It should be noted that, in the technical scheme of a specific embodiment, the pressure block 511 is arranged in a truncated cone shape to form a step shape, and the diameter of the end away from the first elastic member 512 is smaller, and the side close to the first elastic member 512 is clearance-fitted with the sliding cavity 21. A through hole is arranged at the end of the sliding cavity 21 away from the first elastic member 512, and the diameter of the through hole is smaller than the diameter of the sliding cavity 21. The through hole is clearance-fitted with the end of the pressure block 511 away from the first elastic member 512, that is, the end of the pressure block 511 away from the first elastic member 512 can pass through the through hole and abut against the first outer mold mechanism 30. Such a setting limits the maximum displacement of the pressure block 511 against the first outer mold mechanism 30, thereby avoiding the first outer mold mechanism 30 from being subjected to excessive resistance, resulting in excessive reset and failure.

[0038] like Figures 1 to 4As shown, in the technical solution of this embodiment, the reset mechanism 50 also includes a second reset structure 52, which is arranged in the lower mold 12, and the second reset structure 52 pushes the driving mechanism 40 in the direction close to the upper mold 11 along the first direction. The second reset structure 52 is used to reset the driving mechanism 40, and such a setting can push the driving mechanism 40 away, thereby reducing the pressure on the first reset structure 51, and the two can be better reset by cooperating at the same time.

[0039] It should be noted that the second reset structure 52 includes a pushing block 521 and a second elastic member 522. The pushing block 521 and the second elastic member 522 are both slidably arranged inside the lower mold 12. The sliding direction is a first direction. The second elastic member 522 pushes the pushing block 521. The side of the pushing block 521 away from the second elastic member 522 is against the bottom of the driving mechanism 40. Such a setting is similar to the first reset structure 51 and has the same principle. The difference is that the sliding cavity of the pushing block 521 and the second elastic member 522 is arranged inside the lower mold 12. Such a setting has a compact structure and high stability and can effectively realize the reset work.

[0040] like Figures 1 to 5 As shown, in the technical solution of this embodiment, the fixed seat 20 is provided with an arc-shaped cavity 22, and the first outer mold mechanism 30 is provided with a cylindrical roller structure 33, and the roller structure 33 is rotatably arranged in the arc-shaped cavity 22. The arrangement of the arc-shaped cavity 22 and the roller structure 33 realizes the rotation arrangement of the first outer mold mechanism 30 relative to the fixed seat 20, and the arrangement of the arc-shaped cavity 22 provides the possibility of rotation. The arrangement of the roller structure 33 is similar to the shaft body, and the rotation is realized by the cooperation of the shaft and the cavity. Such an arrangement is compact in structure, and the direction and angle of rotation can be better controlled, so as to control the displacement of the rotating extruded part 100 to be bent, and thus more accurately.

[0041] like Figures 1 to 5As shown, in the technical solution of this embodiment, the fixing seat 20 is provided with a first limiting surface 23 and a second limiting surface 24, and the first limiting surface 23 and the second limiting surface 24 are respectively connected to the inner cavity surface of the arc cavity 22, and the first outer mold mechanism 30 is provided with a first matching surface 34 and a second matching surface 35, and the first matching surface 34 and the second matching surface 35 are respectively connected to the cylindrical surface of the roller structure 33, and the angle formed by the first limiting surface 23 and the second limiting surface 24 is greater than the angle formed by the first matching surface 34 and the second matching surface 35. Such a setting realizes the rotation angle restriction of the roller structure 33, that is, the angle difference between the angle formed by the first limiting surface 23 and the second limiting surface 24 and the angle formed by the first matching surface 34 and the second matching surface 35 is the amount that the roller structure 33 can rotate. Such a setting is conducive to cooperating with the function of the first reset structure 51, realizing the precise bending and reset of the first outer mold mechanism 30, and can avoid excessive reset during reset, which leads to the failure of the first outer mold mechanism 30. The mechanism is compact and has a high degree of matching, which is more conducive to the realization of automation.

[0042] It should be noted that the angle formed by the connection position of the first limiting surface 23 and the arc-shaped cavity 22, as well as the connection position of the second limiting surface 24 and the arc-shaped cavity 22 and the straight line between the two and the central axis of the arc-shaped cavity 22 is less than 180 degrees, that is, the straight-line distance between the two is less than the diameter of the arc-shaped cavity 22. Such a setting can limit the roller structure 33, that is, it will not detach from the lateral opening of the arc-shaped cavity 22. Such a setting fixes the roller structure 33, making the structure further compact and not damaged.

[0043] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the locking structure 32 includes a first locking surface 321 and a second locking surface 322 set at an angle, and the driving mechanism 40 includes a snap-fit ​​structure 41, and the snap-fit ​​structure 41 includes a first snap-fit ​​surface 411 and a second snap-fit ​​surface 412 set at an angle. When the first locking surface 321 contacts the first snap-fit ​​surface 411, the second locking surface 322 contacts the second snap-fit ​​surface 412, so as to achieve locking of the driving mechanism 40 and the locking structure 32. The first locking surface 321 and the second locking surface 322 are arranged as well as the first engaging surface 411 and the second engaging surface 412, so as to form a locked state. When the driving mechanism 40 slides along the first direction close to the lower mold 12, the second engaging surface 412 first abuts against the side of the second locking surface 322 away from the first locking surface 321, and at the same time transmits the pressing force to the first outer mold mechanism 30, so that the first outer mold mechanism 30 rotates in the clockwise direction until the first locking surface 321 contacts the first engaging surface 411. At this time, the upper mold 11 and the lower mold 12 complete the stamping. Such an arrangement makes the driving of the driving mechanism 40 ingenious, compact and precise, and is conducive to high-precision stamping operations.

[0044] Furthermore, in order to facilitate the reliable locking of the locking structure 32 and the engaging structure 41, the angle between the first locking surface 321 and the second locking surface 322 can be set to 90 degrees, and the angle between the first engaging surface 411 and the second engaging surface 412 can be set to 90 degrees, and there are transition fillets between the first locking surface 321 and the second locking surface 322 and between the first engaging surface 411 and the second engaging surface 412, and the diameters of the fillets are equal. Such a setting makes the locking of the locking structure 32 and the engaging structure 41 more accurate and reliable. At the same time, the setting of the fillets will not cause scratches when the two are in contact with each other, resulting in a decrease in accuracy.

[0045] Furthermore, a separation surface is connected between the second locking surface 322 and the second mating surface 35. The separation surface is a straight surface and does not contact any surface, that is, a gap is set with any surface adjacent to it, that is, the separation surface and the second locking surface 322 are set at an acute angle, and the separation surface and the second mating surface 35 are set at an obtuse angle. When the upper and lower molds are closed along the first direction downward, the gap between the separation surface and the driving mechanism 40 gradually increases. On the one hand, such a setting will not cause interference and has a compact structure. On the other hand, when the first outer mold mechanism 30 is rotated, the degree of fit with the driving mechanism 40 is higher.

[0046] It should be noted that in the technical solution of this embodiment, the first limit surface 23, the second limit surface 24, the first mating surface 34, the second mating surface 35, the first locking surface 321, the second locking surface 322, the first snap-fit ​​surface 411 and the second snap-fit ​​surface 412 are all planes. The setting of the planes facilitates processing and customizing the reference so as to maintain accuracy during the stamping process.

[0047] like Figure 5 As shown, in the technical solution of this embodiment, the first outer mold mechanism 30 is an integrated molding structure. The use of an integrated molding structure makes the first outer mold mechanism 30 have high structural strength, is easy to manufacture and process, saves assembly procedures, and is conducive to the production and manufacturing of the mold. It should be noted that Figure 4 As shown, there is a sliding connection relationship between the fixed seat 20 and the driving mechanism 40, that is, the fixed seat 20 is provided with a boss arranged along the driving mechanism 40, and the driving mechanism 40 is provided with a corresponding through groove, and the bottom of the through groove is connected, and after being able to accommodate the boss, the circumferential freedom of the sliding of the driving mechanism 40 is limited. Such a setting ensures that the driving reset process of the driving mechanism 40 can maintain a high degree of accuracy, and such a setting is more conducive to the realization of automated processing. The through groove can also limit the maximum displacement of the driving mechanism 40 along the first direction close to the lower mold 12, avoiding excessive compression of the rotatable first outer mold mechanism 30, and thus avoiding the situation of crushing the first outer mold mechanism 30 or the connection position of the first outer mold mechanism 30.

[0048] like Figure 5 As shown, in the technical solution of this embodiment, the molding structure 31 is arranged on the first locking surface 321, and the molding structure 31 is a U-shaped cavity. The molding structure 31 is provided with a U-shaped cavity to cooperate with the deformation area of ​​the part to be bent 100 after bending. Since the molding structure 31 realizes the bending of the part to be bent 100 by extrusion deformation, and the bending process is gradually carried out, such a setting makes part of the material of the part to be bent 100 extend into the molding structure 31, and a stable structure is formed by the effect of extrusion. Such a setting can control the deformation degree of the bending area on the one hand to obtain a higher U-shaped saturation, and such a setting is more conducive to the implementation of maximum angle bending. The technical solution of the present application can be applied to bending requirements of up to 180°.

[0049] It should be noted that if Figures 1 to 4 As shown, in the technical solution of this embodiment, a first inner mold mechanism 60 is also provided in the upper mold 11, and the first inner mold mechanism 60 includes an inner mold core 61, a sliding seat body 62, a fixed seat body 63 and a third elastic member 64. The fixed seat body 63 is fixedly installed in the upper mold 11, and the sliding seat body 62 can be slidably arranged on the sliding seat body 62 along the second direction. The inner mold core 61 is arranged at a position of the sliding seat body 62 close to the lower mold 12, and the sliding of the inner mold core 61 is realized by a close fit or fixed connection with the engaging cavity 621. The engaging cavity can be a square hole with a notch, and the mutual limitation of the inner mold core 61 and the engaging cavity 621 is realized by the setting of the notch. The second direction is perpendicular to the first direction and is consistent with the thickness direction of the part 100 to be bent. The sliding of the sliding seat body 62 can realize the position of the inner mold core 61 before extruding the part 100 to be bent during the mold closing process.

[0050] Further, the sliding seat body 62 has a mounting hole 622 arranged along the second direction, and a third elastic member 64 is arranged in the mounting hole 622. The third elastic member 64 pushes the sliding seat body 62 away from the part to be bent 100 along the second direction. A fixed top block 70 is arranged in cooperation, and the fixed top block 70 is fixedly arranged in the lower mold 12. A first inclined surface 623 is arranged on the side of the sliding seat body 62 away from the third elastic member 64. The fixed top block 70 is provided with a second inclined surface 71 and a third inclined surface 72. When the sliding seat body 62 is molded along the first direction, the second inclined surface 71 on the fixed top block 70 contacts the first inclined surface 623, so that the sliding seat body 62 slides outward along the second direction. At this time, the inner mold core 61 is located inside the bending area of ​​the part to be bent 100 through the displacement in the second direction. At this time, the inner mold core 61 and the molding structure 31 can be used to squeeze the inside and outside of the deformation area of ​​the part to be bent 100, thereby achieving better shape control of the deformation area. The third inclined surface 72 can be arranged to cooperate with the sliding seat body 62 at different stages to achieve the effect of sliding twice along the second direction, thereby avoiding sliding too early or too late, which may cause interference with the part to be bent 100 or other components.

[0051] It should be noted that if Figures 1 to 4 As shown, in the technical solution of this embodiment, the projection of the sliding seat body 62 on the cross section perpendicular to the second direction is T-shaped, and correspondingly, the slide 631 on the fixed seat body 63 is also arranged to be T-shaped. Such a setting avoids the freedom of the sliding seat body 62 along other directions and can only slide in the second direction. Such a setting has higher precision control and better fit.

[0052] The stamping assembly of this embodiment can be used for 180° precision stamping of the part 100 to be bent, and its main part mainly includes: a fixed seat body 63, a sliding seat body 62, an inner model core 61, a fixed seat 20, etc. After the inner model core 61 and the sliding seat body 62 are assembled, they are installed in the fixed seat body 63, and the third elastic member 64 is installed to ensure that the sliding seat body 62 is effectively reset during the opening and closing process of the mold; the first outer mold mechanism 30 and the fixed seat 20 are in a sliding state, and the single-side matching clearance is 0.002mm, and then the swing block pressure block 511 and the first elastic member 512 are installed to enable the first outer mold mechanism 30 to be effectively reset during the opening and closing process.

[0053] like Figure 7 and Figure 8As shown, in the second aspect, the embodiment of the present application provides a stamping die, the stamping die comprises an upper die 11, a lower die 12 and a stamping assembly, the stamping assembly is the above-mentioned stamping assembly, and the stamping assembly is driven by the upper die 11 and the lower die 12 to stamp the part to be bent 100. The above-mentioned stamping assembly is used to bend the part to be bent 100, which can effectively avoid the problem of poor accuracy of the bending area of ​​the part to be bent 100 due to the need for multiple bending of the part with a large angle.

[0054] It should be noted that in the prior art, when faced with a larger bending angle of about 180°, in order to consider the realization of bending and the control of deformation in the bending area, the bending process is usually divided into four or more times to achieve precise deformation control. In the mass production process, such a setting greatly affects the production efficiency. However, in this embodiment, due to the use of a stamping assembly, the deformation of the last bending can be controlled by setting the forming structure 31 under a larger bending angle, thereby accurately controlling the accuracy of the bending area. On the one hand, it reduces the cumulative error caused by too many times, and on the other hand, it reduces the processing order and effectively improves the production efficiency.

[0055] Furthermore, if Figure 8 As shown, in the technical solution of this embodiment, the 180° bending process of the part 100 to be bent can be achieved through three forming steps, and the multiple bending mechanisms can be performed using the same mold, that is, the force of each bending can be guaranteed to be consistent. Such a setting is not only compact in structure and has the same accuracy standard, but also can save the error in the assembly of the part 100 to be bent.

[0056] Specifically, Figure 8 As shown in the schematic diagram of the stamping process of the part to be stamped, the first bending of the part to be bent 100 is achieved by cooperating with the second outer mold mechanism 81 and the second inner mold mechanism 82 in the second bending assembly 80. The angle of the first bending is slightly less than 90 degrees. By setting a molding structure with a corresponding angle on the second outer mold mechanism 81, and cooperating with the mold opening, the processing effect of the sheet metal can be maintained. Then, the third bending assembly 90 is used for secondary bending. The third bending assembly 90 includes a third outer mold mechanism 91 and a third inner mold mechanism 92. The combination of the two has a solution for making the material deflect at a large angle. Specifically, the third outer mold mechanism 91 is provided with an arc-shaped groove body corresponding to the molding structure 31 in the first outer mold mechanism 30. The angle between the end points on both sides of the arc-shaped groove body and the central axis of the arc-shaped groove body is so as to form a preliminary large-angle transition. After processing by the third bending assembly 90, the stamping assembly is used for the third bending operation. Such a setting not only meets the requirements of the bending operation, but also effectively improves the production efficiency.

[0057] When the upper and lower molds are combined, the sliding seat body 62 moves from top to bottom by removing the plate. When the sliding seat body 62 reaches the fixed position and contacts the fixed top block 70, the sliding seat body 62 continues to move downward to contact the driving mechanism 40. At the same time, the sliding seat body 62 moves along the second direction. When the sliding seat body 62 reaches the fixed position, it stops moving forward. The sliding seat body 62 continues to slide, and the driving mechanism 40 synchronously pushes the first outer mold mechanism 30 downward along the first direction and transmits force to the pressing block 511 and the first elastic member 512. The first outer mold mechanism 30 rotates rightward by 5° with the center of the circle as the axis, and bends the part to be bent 100 after the second bending to obtain the part to be bent 100 after the third bending.

[0058] When the mold changes from a closed state to an open state, the fixed seat body 63 moves upward with the upper mold 11. During this process, the fixed top block 70 releases the restriction on the sliding seat body 62, and the sliding seat body 62 is separated from the fixed top block 70 and reset by the push action of the third elastic member 64, completing the U-shaped molding action.

[0059] It should be noted that the fixed seat body 63 moves with the upper mold 11, and cooperates with the sliding seat body 62 to drive the movement of the inner mold core 61 and the contact between the workpiece 100 to be bent after the second bending needs to be set for a certain time.

[0060] When the upper die 11 reaches the limit position under the punch press, the bending piece 100, the inner mold core 61 and the first outer mold mechanism 30 are completely fitted together to achieve processing. Such a setting can make the dimensional accuracy of the U-shaped part of the product reach 0.02mm.

[0061] Action steps in the closed state: the upper mold 11 moves downward as a whole. When the downward movement reaches the point where the first inclined surface 623 contacts the second inclined surface 71, the fixed seat body 63 continues to move downward, and the third elastic member 64 is compressed by the force generated by the sliding seat body 62, so that the inner mold core 61 moves along the second direction until the first inclined surface 623 is completely separated from the second inclined surface 71 and then stops sliding. The fixed seat body 63 continues to move downward to continue pressing the driving mechanism 40 downward, and the first outer mold mechanism 30 rotates under the force of the driving mechanism 40, thereby completing the bending forming of the stamped product.

[0062] Action steps in the open state: the upper mold 11 moves upward, driving some parts to move upward, and the reset mechanism 50 resets the driving mechanism 40 and the first outer mold mechanism 30. The driving mechanism 40 releases the pressure on the first outer mold mechanism 30 while rising. The first outer mold mechanism 30 extends the first elastic member 512 to push the pressing block 511 to reset the rotating first outer mold mechanism 30. When the upper mold 11 rises to the point where the first inclined surface 623 contacts the second inclined surface 71, the sliding seat body 62 is reset after being pushed by the third elastic member 64.

[0063] The stamping die using the above technical solution is not only suitable for eliminating the die marks on the appearance surface, but also can make the U-shaped part formed by the bent product more saturated. When bending, the gap between the first outer die mechanism 30 and the first inner die mechanism 60 is 1 material thickness, which can better ensure the dimensional stability of the product when bending. When using the stamping die, the program setting of at least one stage can be reduced, thereby reducing the setting length of a stamping die and saving material and parts costs.

[0064] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0065] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0066] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A stamping assembly, used in a stamping die, the stamping die comprising an upper die (11) and a lower die (12), characterized in that: include: A fixed seat (20), the fixed seat (20) being fixedly disposed in the lower mold (12); A first outer mold mechanism (30), the first outer mold mechanism (30) comprising a fixedly connected molding structure (31) and a locking structure (32), the first outer mold mechanism (30) being rotatably connected to the fixing seat (20), the locking structure (32) comprising a first locking surface (321) and a second locking surface (322) arranged at an angle; a driving mechanism (40), the driving mechanism (40) being slidably disposed in the lower mold (12) along a first direction, the driving mechanism (40) comprising a snap-fitting structure (41), the snap-fitting structure (41) comprising a first snap-fitting surface (411) and a second snap-fitting surface (412) disposed at an angle, and when the first locking surface (321) and the first snap-fitting surface (411) are in contact, the second locking surface (322) and the second snap-fitting surface (412) are in contact, so as to achieve locking of the driving mechanism (40) and the locking structure (32); When the upper mold (11) and the lower mold (12) are molded together, the upper mold (11) pushes the driving mechanism (40) to contact the locking structure (32), and the locking structure (32) drives the first outer mold mechanism (30) to rotate, so that the molding structure (31) gradually squeezes the part to be bent (100), and after the upper mold (11) and the lower mold (12) are molded together, the driving mechanism (40) and the locking structure (32) are locked; The molding structure (31) is arranged on the first locking surface (321), and the molding structure (31) is a U-shaped cavity; The fixing seat (20) is provided with an arc-shaped cavity (22), and the first outer mold mechanism (30) is provided with a cylindrical roller structure (33), and the roller structure (33) is rotatably arranged in the arc-shaped cavity (22); The fixing seat (20) is provided with a first limiting surface (23) and a second limiting surface (24), the first limiting surface (23) and the second limiting surface (24) are respectively connected to the inner cavity surface of the arc-shaped cavity (22), the first outer mold mechanism (30) is provided with a first matching surface (34) and a second matching surface (35), the first matching surface (34) and the second matching surface (35) are respectively connected to the cylindrical surface of the roller structure (33), and the angle formed by the first limiting surface (23) and the second limiting surface (24) is greater than the angle formed by the first matching surface (34) and the second matching surface (35).

2. The stamping assembly according to claim 1, characterized in that: The punching assembly further comprises a reset mechanism (50), wherein the reset mechanism (50) comprises a first reset structure (51), wherein the first reset structure (51) pushes against the locking structure (32) in a first direction approaching the upper die (11).

3. The stamping assembly according to claim 2, characterized in that: The fixing seat (20) is provided with a sliding cavity (21) extending along a first direction. The first reset structure (51) comprises a pressing block (511) and a first elastic member (512). The pressing block (511) is slidably arranged in the sliding cavity (21). The first elastic member (512) applies a force to the pressing block (511) approaching the upper mold (11). An end of the pressing block (511) away from the first elastic member (512) abuts against the first outer mold mechanism (30).

4. The stamping assembly according to claim 2, characterized in that: The reset mechanism (50) further comprises a second reset structure (52), wherein the second reset structure (52) is arranged in the lower mould (12), and the second reset structure (52) pushes the driving mechanism (40) in a direction close to the upper mould (11) along the first direction.

5. The stamping assembly according to claim 1, characterized in that: The first outer mold mechanism (30) is an integrally molded structure.

6. A stamping die, characterized in that: The stamping die comprises an upper die (11), a lower die (12) and a stamping assembly, wherein the stamping assembly is the stamping assembly described in any one of claims 1 to 5, and the stamping assembly is driven by the upper die (11) and the lower die (12) to stamp the part to be bent (100).

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