Car roof camber beam punching die

Abstract

The invention provides a car roof camber beam punching die, which belongs to the technical field of stamping dies and comprises an upper die plate, a lower die plate, a male die assembly and a female die assembly. The lower template and the upper template are correspondingly arranged up and down; the male die assembly is arranged on the upper die plate. The male die assembly is provided with a stamping part matched with the outer surface of the top of the camber beam. The female die assembly is arranged on the lower die plate. The female die assembly is provided with a positioning part matched with the inner surface of the top of the camber beam. When the upper die plate and the lower die plate are closed, an arc-shaped positioning space is defined by the male die assembly and the female die assembly, the bent beam is flatly placed in the arc-shaped positioning space, the positioning part abuts against the inner surface of the top of the bent beam, and the punching part is used for punching the top of the bent beam. According to the car roof camber beam punching die, the camber beam is flatly placed in the arc-shaped positioning space, and all mounting holes can be punched at a time; the camber beam which is horizontally placed can correspondingly reduce the height of the die, increase the width of the die and simplify the manufacturing difficulty, the camber beam cannot turn over, and potential safety hazards are eliminated.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping dies, and more specifically, relates to a roof curved beam punching die. Background Art

[0002] As locomotives and rolling stock enter the high-speed era, their dynamic performance and comfort requirements are attracting more and more attention. The roof curved beam is an important component in the roof of a rail vehicle and is the main load-bearing part of the roof structure and roof interior components.

[0003] With the improvement of vehicle body quality, full-length roof curved beams are increasingly widely used. In the prior art, in order to reduce the amount of welding on the vehicle body and reduce the deformation of the vehicle body welding, the number of welded roof hangers is getting smaller and smaller. Instead, round holes or hexagonal holes are processed on the roof parts to install rivet nuts, and the roof hangers are installed by bolt connection. Therefore, a punching die is needed to punch holes in the roof curved beam.

[0004] Most of the existing punching dies are used for punching flat materials, and adopt an up and down punching working mode. The roof curved beam is a curved arc structure, which causes the punching direction of the mounting hole to be not parallel to the movement direction of the punch, and the stroke of the punch is also uneven, making it difficult to process all the mounting holes at one time; in addition, since the two sides of the curved beam are bent downward and have a certain height, the mold is extremely high and the width is small, making the mold difficult to manufacture. In addition, the curved beam is prone to tipping over when placed, posing a safety hazard. Summary of the invention

[0005] The purpose of the present invention is to provide a roof bow beam punching die, aiming to solve the technical problems that the punching die in the prior art cannot punch out all the mounting holes for the roof bow beam at one time and the die manufacturing is difficult due to the limitation of the roof bow beam structure.

[0006] To achieve the above object, the technical solution adopted by the present invention is: to provide a roof curved beam punching die, comprising: Upper template; A lower template is arranged correspondingly to the upper template; A male mold component is arranged on the upper mold plate; the male mold component has a stamping portion adapted to the top outer surface of the curved beam; and A concave mold component is arranged on the lower mold plate; the concave mold component has a positioning portion adapted to the top inner surface of the curved beam; Wherein, when the upper mold plate and the lower mold plate are closed, an arc-shaped positioning space is enclosed between the male mold component and the female mold component, the curved beam is placed flat in the arc-shaped positioning space, and the positioning portion abuts against the top inner surface of the curved beam, and the stamping portion is used to punch a hole in the top of the curved beam.

[0007] In a possible implementation, an extension direction of the curved beam is defined as a reference circumferential direction; The upper mold plate is provided with a plurality of first positioning holes spaced apart along the reference circumferential direction; the punch component comprises a plurality of punch modules spaced apart along the reference circumferential direction, and the number of the punch modules is less than or equal to the number of the first positioning holes; each of the punch modules is fixed in one of the first positioning holes by a first positioning pin.

[0008] In some embodiments, the male mold module includes: An upper fixing seat is arranged on the upper template; the upper fixing seat is connected with a guide wedge; and A sliding block is located below the upper fixed seat; the sliding block has a guide inclined surface, and the guide wedge block is slidably arranged on the guide inclined surface; the sliding block is connected to the stamping part, and the stamping part is arranged opposite to the guide inclined surface; Wherein, when the upper mold plate and the lower mold plate are closed, the sliding block and the die are in abutment with each other, and when the upper mold plate is continuously pressed down, the guide wedge block and the guide inclined surface are slidably matched to push the sliding block and the stamping part to move toward the bending beam.

[0009] In some embodiments, the die assembly comprises a plurality of abutment blocks; the plurality of abutment blocks correspond one-to-one to the plurality of sliding blocks; The upper surface of the abutment block forms a sliding surface, and the vertical cross-section of the sliding surface is a trapezoid or a triangle; the lower surface of the sliding block is adapted to the sliding surface; Wherein, when the upper mold plate and the lower mold plate are molded together, the lower surface of the sliding block is mounted on the sliding surface, and when the upper mold plate is continuously pressed down, the lower surface of the sliding block is slidably matched with the sliding surface.

[0010] In some embodiments, the upper fixing seat is further connected to a guide column; the sliding block further has a guide cavity; the guide column is inserted into the guide cavity; The upper fixed seat is also connected to a stopper; the top surface of the sliding block has a stopper notch; the stopper corresponds to the stopper notch up and down; wherein, when the stopper is placed in the stopper notch, the guide wedge is in a stagnant state and no longer pushes the sliding block to move.

[0011] In some embodiments, the bottom surface of the upper template is provided with an upper arc guide groove, and the upper arc guide groove is extended along the reference circumferential direction; the upper fixing seat is connected with an upper limit block, and the upper limit block is inserted in the upper arc guide groove; The bottom surface of the upper mold plate is also provided with an inner arc stopper, and the inner arc stopper is extended along the reference circumferential direction, and the radial end surface of the upper fixed seat abuts against the inner arc stopper.

[0012] In a possible implementation, an extension direction of the curved beam is defined as a reference circumferential direction; The lower mold plate is provided with a plurality of second positioning holes spaced apart along the reference circumferential direction; the die component comprises a plurality of die modules spaced apart along the reference circumferential direction, and the number of the die modules is less than or equal to the number of the second positioning holes; each of the die modules is fixed in one of the second positioning holes by a second positioning pin.

[0013] In some embodiments, the concave mold module includes: A lower fixing seat, arranged on the lower template; A positioning block is arranged on the lower fixing seat; the positioning block has the positioning portion; and The material receiving box is arranged on the lower fixing seat and is located below the positioning portion.

[0014] In some embodiments, the top surface of the lower template is provided with a lower arc guide groove, and the lower arc guide groove is extended along the reference circumferential direction; the lower fixing seat is connected with a lower limit block, and the lower limit block is inserted in the lower arc guide groove; The top surface of the lower template is also provided with a lower outer arc stopper, the lower outer arc stopper is extended along the reference circumferential direction, and the radial end surface of the lower fixed seat abuts against the lower outer arc stopper; An upper outer arc-shaped stopper is also provided on the bottom surface of the upper template, and the upper outer arc-shaped stopper is extended along the reference circumferential direction, and the radial end surface of the positioning block abuts against the upper outer arc-shaped stopper.

[0015] In a possible implementation, a pressing plate is connected to the bottom surface of the upper template, and when the upper template and the lower template are molded together, the pressing plate is used to press the bending beam.

[0016] The beneficial effect of the roof curved beam punching die provided by the present invention is that compared with the prior art, the roof curved beam punching die of the present invention can enclose an arc-shaped positioning space between the male mold component and the female mold component when the upper mold plate and the lower mold plate are closed, so that the curved beam can be placed flat in the arc-shaped positioning space, and when punching, the positioning part abuts against the top inner surface of the curved beam to limit the misalignment movement of the curved beam, and the stamping part abuts against the top outer surface of the curved beam to punch the top of the curved beam, and all installation holes can be punched out at one time; in addition, relative to the vertical placement of the curved beam, the flat curved beam can reduce the height of the mold accordingly, increase the width of the mold, simplify the difficulty of mold manufacturing, and the curved beam will not flip over, eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the structure of the roof curved beam punching die provided in the embodiment of the present invention Figure 1 ; Figure 2 Schematic diagram of the structure of the roof curved beam punching die provided in the embodiment of the present invention Figure 2 (The upper template is not shown in the figure); Figure 3 A schematic diagram of the position structure of the male die module, the female die module and the curved beam of the roof curved beam punching die provided in an embodiment of the present invention; Figure 4 A schematic diagram of the matching structure of the punching die of the roof curved beam provided by an embodiment of the present invention and the upper die plate; Figure 5 A schematic diagram of the matching structure of the concave die component and the lower die plate of the roof curved beam punching die provided in an embodiment of the present invention; Figure 6 A schematic structural diagram of a male die module of a roof curved beam punching die provided by an embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the explosion structure; Figure 8 A schematic structural diagram of a die module of a roof curved beam punching die provided in an embodiment of the present invention; Fig. 9 A schematic structural diagram of an upper template of a roof curved beam punching die provided in an embodiment of the present invention; Fig.10 A schematic structural diagram of the lower template of the roof curved beam punching die provided in an embodiment of the present invention.

[0019] In the figure: 1. Upper template; 11. First positioning hole; 12. Upper arc guide groove; 13. Inner arc stopper; 14. Upper outer arc stopper; 2. Lower template; 21. Second positioning hole; 22. Lower arc guide groove; 23. Lower outer arc stopper; 24. Intermediate support seat; 3. Punch module; 31. Stamping part; 32. Upper fixed seat; 33. Sliding block; 331. Guide slope; 332. Stop notch; 333. Guide cavity; 34. Guide wedge; 35. First positioning pin; 36. Guide column; 37. Stop part; 38. Upper limit block; 4. Concave die module; 41. Positioning portion; 42. Lower fixed seat; 43. Positioning block; 44. Material receiving box; 45. Second positioning pin; 46. Abutment block; 461. Sliding surface; 47. Lower limit block; 5. Pressing plate; 6. Guidance composition; 100. Curved beam. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] Please also read Figures 1 to 3 Now, the roof curved beam punching die provided by the present invention is described. The roof curved beam punching die comprises an upper die plate 1, a lower die plate 2, a male die component and a female die component. The lower die plate 2 is arranged correspondingly to the upper die plate 1; the male die component is arranged on the upper die plate 1; the male die component has a stamping portion 31 adapted to the top outer surface of the curved beam 100; the female die component is arranged on the lower die plate 2; the female die component has a positioning portion 41 adapted to the top inner surface of the curved beam 100.

[0022] Among them, when the upper template 1 and the lower template 2 are closed, an arc-shaped positioning space is formed between the male mold component and the female mold component, the curved beam 100 is placed flat in the arc-shaped positioning space, and the positioning part 41 abuts against the top inner surface of the curved beam 100, and the stamping part 31 is used to punch the top of the curved beam 100.

[0023] The roof curved beam punching die is installed on a press, the upper template 1 is connected to the lifting mechanism of the press, and the lower template 2 is fixed on the base of the press. The lifting mechanism moves upward to drive the upper template 1 and the lower template 2 to separate, and the lifting mechanism moves downward to close the upper template 1 and the lower template 2.

[0024] In addition, multiple guide components 6 are provided between the upper template 1 and the lower template 2, such as Figure 2 The guide assembly 6 generally includes a sleeve and a column, wherein the column is sleeved in the sleeve, one of which is connected to the upper template 1 and the other is connected to the lower template 2.

[0025] The structure of the curved beam 100 is as follows: Figure 2 and Figure 3 As shown, the curved beam 100 includes a middle main body section and two arc sections, the two arc sections are bent downward relative to the middle main body section to adapt to the roof structure of the rail vehicle. It should be noted that the punching position of the curved beam 100 is generally on the arc section.

[0026] The convex mold component is arranged on the lower surface of the upper mold plate 1, and the concave mold component is arranged on the upper surface of the lower mold plate 2. The convex mold component and the concave mold component are not arranged correspondingly from top to bottom. After the upper mold plate 1 and the lower mold plate 2 are molded together, the stamping part 31 of the convex mold component and the positioning part 41 of the concave mold component are respectively located on both sides of the radial direction of the top surface of the bending beam 100, such as Figure 3 shown.

[0027] It should be noted that the punch assembly has a plurality of stamping parts 31 distributed at intervals, and the distribution direction of the plurality of stamping parts 31 is the same as the bending direction of the bending beam 100, that is, the axial directions of the plurality of stamping parts 31 are not parallel, but the axial direction of each stamping part 31 is co-directional with the axial direction of the corresponding mounting hole, so that the punch assembly can punch out a plurality of mounting holes at the same time in one operation.

[0028] During specific application, the lifting mechanism of the press drives the upper template 1 to move upward, the upper template 1 is separated from the lower template 2, the bent beam 100 is placed flat on the lower template 2, and the position of the bent beam 100 is adjusted so that the top inner surface of the bent beam 100 abuts against the positioning portion 41 of the concave mold component to position the bent beam 100; then the lifting mechanism of the press drives the upper template 1 downward so that the upper template 1 and the lower template 2 are molded together; finally, the punch component is started to make the stamping part 31 move toward the top of the bent beam 100, the stamping part 31 first presses the bent beam 100, and then continues to move forward to punch; after the punching is completed, the lifting mechanism of the press moves upward, and the stamping part 31 retreats and separates from the bent beam 100.

[0029] It should be noted that the above-mentioned punch assembly can be independently equipped with a driving system to enable the stamping portion 31 to move forward and backward, and the driving system can also be used together with the lifting mechanism. The present embodiment does not limit the specific driving method of the punch assembly, as long as the stamping portion 31 of the punch assembly can move forward and backward toward the top of the bending beam 100 after the upper mold 1 and the lower mold 2 are closed.

[0030] Compared with the prior art, the roof curved beam punching die provided by the present invention is capable of enclosing an arc-shaped positioning space between the male die component and the female die component when the upper die plate 1 and the lower die plate 2 are closed, so that the curved beam 100 can be placed flat in the arc-shaped positioning space; when punching, the positioning portion 41 abuts against the top inner surface of the curved beam 100 to limit the misalignment and movement of the curved beam 100; the stamping portion 31 abuts against the top outer surface of the curved beam 100 to punch holes in the top of the curved beam 100, and all mounting holes can be punched out at one time; in addition, relative to the vertical placement of the curved beam 100, the flat curved beam 100 can reduce the height of the mold accordingly, increase the width of the mold, simplify the difficulty of mold manufacturing, and the curved beam 100 will not flip over, eliminating safety hazards.

[0031] In some embodiments, the upper mold plate 1 and the male mold can be formed as follows: Figure 4 and Fig. 9 The structure shown, see Figure 4 and Fig. 9 , defining the extension direction of the bending beam 100 as the reference circumferential direction; the upper template 1 is provided with a plurality of first positioning holes 11 spaced apart along the reference circumferential direction; the punch composition includes a plurality of punch modules 3 spaced apart along the reference circumferential direction, and the number of the punch modules 3 is less than or equal to the number of the first positioning holes 11; each punch module 3 is fixed in one of the first positioning holes 11 by a first positioning pin 35.

[0032] Each of the male mold modules 3 has a stamping portion 31. The male mold modules 3 are not directly fixed on the upper mold plate 1, and the position of each male mold module 3 relative to the upper mold plate 1 can be changed, specifically by positioning the first positioning pins 35; although the position of each male mold module 3 can be changed, since the plurality of first positioning holes 11 are spaced apart along the reference circumferential direction, that is, after the male mold modules 3 are fixed by the first positioning pins 35, the plurality of male mold modules 3 are still spaced apart along the reference circumferential direction, so that the distribution of the plurality of stamping portions 31 conforms to the bending structure of the bending beam 100.

[0033] In the prior art, the positions of the mounting holes on the curved beam 100 are different due to the different positions and functions of the accessories on different vehicle models, and the punching positions of conventional punching dies are fixed. Therefore, the roof curved beam punching dies of different vehicle models cannot be used universally and need to be manufactured separately.

[0034] In this embodiment, the punch component is divided into a plurality of punch modules 3, and the number of the first positioning holes 11 is greater than or equal to the number of the punch modules 3, so that the fixed position of each punch module 3 can be changed to adapt to the punching position requirements of different bending beams 100.

[0035] Specifically, when replacing the bending beam 100 of a different vehicle model, after separating the upper template 1 from the lower template 2, take out the first positioning pin 35, separate the punch module 3 from the upper template 1, and then move the punch module 3 to a suitable angle according to the position of the mounting hole of the bending beam 100, and fix it again with the first positioning pin 35 to achieve rapid adjustment of the mold when punching holes at different positions.

[0036] In some embodiments, the male mold module 3 may be used as follows: Figure 6 and Figure 7 The structure shown, see Figure 6 and Figure 7 The punch module 3 includes an upper fixed seat 32 and a sliding block 33; the upper fixed seat 32 is arranged on the upper template 1; the upper fixed seat 32 is connected with a guide wedge 34; the sliding block 33 is located below the upper fixed seat 32; the sliding block 33 has a guide inclined surface 331, and the guide wedge 34 is slidably arranged on the guide inclined surface 331; the sliding block 33 also has a stamping portion 31, and the stamping portion 31 is arranged opposite to the guide inclined surface 331.

[0037] When the upper mold plate 1 and the lower mold plate 2 are closed, the sliding block 33 abuts against the die, and when the upper mold plate 1 is continuously pressed down, the guide wedge block 34 slides with the guide slope 331 to push the sliding block 33 and the stamping part 31 to move toward the bending beam 100.

[0038] The upper fixing seat 32 is used to connect with the upper mold plate 1 so that the punch module 3 is fixed as a whole. The sliding block 33 is used to connect the punching part 31 and drive the punching part 31 to slide toward and away from the top of the bending beam 100. Specifically, the guide inclined surface 331 of the sliding block 33 is inclined relative to the up and down direction, and the guide inclined surface 331 and the guide wedge block 34 can slide relative to each other.

[0039] Specifically, after the upper mold 1 and the lower mold 2 are closed, the sliding block 33 moves down to form abutment with the die, the sliding block 33 is limited by the groove in the up and down directions, and the upper fixed seat 32 and the guide wedge block 34 are limited by the upper mold 1 in the up and down directions. When the upper mold 1 is continuously pressed down, the guide inclined surface 331 can slide forward (i.e., close to the bending beam 100) relative to the guide wedge block 34, that is, the guide wedge block 34 can push the sliding block 33 and the stamping part 31 to slide forward to punch the bending beam 100.

[0040] After the punching is completed, the upper template 1 moves upward, driving the upper fixed seat 32 and the guide wedge block 34 to move upward, and at the same time the guide wedge block 34 slides upward relative to the guide inclined surface 331 to return the sliding block 33 to its original position.

[0041] It should be noted that the guide wedge block 34 is always in contact with the guide inclined surface 331 , and the sliding distance of the sliding block 33 is slightly greater than the top thickness of the curved beam 100 . The sliding block 33 will not be separated from the guide wedge block 34 .

[0042] The operation of the punch module 3 in this embodiment is driven by the upper template 1, that is, the punch module 3 and the upper template 1 use a common drive system, which reduces the drive components of the mold and reduces the cost; and there is no need to set a drive line between the upper template 1 and the lower template 2, which will not affect the mold closing and optimize the structural layout.

[0043] See also Figure 8 On the basis of the above-mentioned embodiment, the die composition comprises a plurality of abutment blocks 46; the plurality of abutment blocks 46 correspond one to one with the plurality of sliding blocks 33; the upper surface of the abutment block 46 forms a sliding surface 461, and the vertical cross-section of the sliding surface 461 is a trapezoid or a triangle; the lower surface of the sliding block 33 is adapted to the sliding surface 461; wherein, when the upper mold plate 1 and the lower mold plate 2 are closed, the lower surface of the sliding block 33 is mounted on the sliding surface 461, and when the upper mold plate 1 is continuously pressed down, the lower surface of the sliding block 33 slides and matches with the sliding surface 461.

[0044] The vertical cross-section of the sliding surface 461 is a trapezoid or a triangle, that is, the sliding surface 461 can be regarded as a guide rail structure, and the lower surface of the sliding block 33 is mounted on the sliding surface 461. On the one hand, it ensures that the abutment block 46 can form a stable support for the sliding block 33. On the other hand, the guide rail structure can ensure that the sliding path of the sliding block 33 is stable and will not deviate.

[0045] In some embodiments, the male mold module 3 may also be used as follows: Figure 6 and Figure 7 The structure shown, see Figure 6 and Figure 7 The upper fixing seat 32 is also connected to the guide column 36 ; the sliding block 33 also has a guide cavity 333 ; the guide column 36 is inserted into the guide cavity 333 .

[0046] The guide post 36 is inclined relative to the up-down direction, and the inclination direction is the same as the inclination direction of the guide slope 331. The guide post 36 is slidably matched with the guide cavity 333, which plays a role of further guiding and connecting with the sliding block 33. In addition, friction can be generated between the guide post 36 and the cavity wall of the guide cavity 333, which can slow down the moving speed of the sliding block 33 and increase the force applied to the sliding block 33, so as to ensure that the stamping part 31 passes through the top of the curved beam 100.

[0047] When the punching is completed, the upper template 1 moves upward, driving the upper fixed seat 32 and the guide wedge block 34 to move upward, and at the same time, the guide wedge block 34 slides upward relative to the guide inclined surface 331 to return the sliding block 33. Since the guide column 36 is inserted into the guide cavity 333, the sliding block 33 can be driven to move upward at the same time. When the sliding block 33 is separated from the abutment block 46 upward, the sliding block 33 is no longer limited in the vertical direction, and no sliding occurs between the sliding block 33 and the guide wedge block 34. The sliding block 33 moves upward with the upper fixed seat 32.

[0048] In some embodiments, the male mold module 3 may also be used as follows: Figure 6 and Figure 7 The structure shown, see Figure 6 and Figure 7 The upper fixed seat 32 is also connected to a stopper 37; the top surface of the sliding block 33 has a stopper notch 332; the stopper 37 corresponds to the stopper notch 332 up and down; wherein, when the stopper 37 is placed in the stopper notch 332, the guide wedge 34 is in a stagnant state and no longer pushes the sliding block 33 to move.

[0049] The stopper 37 serves as a position limit reminder. When the upper fixing seat 32 moves down until the stopper 37 is completely placed in the stopper notch 332, the punching portion 31 passes through the top of the curved beam 100 to complete the punching. In addition, at this position, the stopper 37 and the stopper notch 332 form a plug-in fit, and the two form a position limit in the travel direction of the sliding block 33 to prevent the sliding block 33 from continuing to slide and disengage from the guide wedge 34 when the upper fixing seat 32 is continuously pressed.

[0050] Preferably, the stop portion 37 is a triangular block with its tip facing downward, and the stop notch 332 is a triangular notch matched with the stop portion 37 .

[0051] It should be noted that the upper fixing seat 32 can be a whole block structure or a structure composed of multiple split blocks. Figure 7 For example, the upper fixing seat 32 is divided into two parts, one part is a rectangular parallelepiped structure, and the other part is a triangular structure. The rectangular parallelepiped structure is connected to the upper template 1, and the triangular structure is connected to the guide wedge 34 and the guide column 36, and a stopper 37 is provided on the triangular structure.

[0052] In some embodiments, the upper mold plate 1 and the male mold can be formed as follows: Figure 4 , Figure 6 , Figure 7 and Fig. 9 The structure shown, see Figure 4 , Figure 6 , Figure 7 and Fig. 9 The bottom surface of the upper template 1 is provided with an upper arc guide groove 12, and the upper arc guide groove 12 is extended along the reference circumferential direction; the upper fixed seat 32 is connected to an upper limit block 38, and the upper limit block 38 is inserted in the upper arc guide groove 12; specifically, the upper limit block 38 is located in the upper arc guide groove 12 and is fixed to the upper template 1 by bolts.

[0053] An inner arc-shaped stopper 13 is further provided on the bottom surface of the upper mold plate 1 . The inner arc-shaped stopper 13 is extended along the reference circumferential direction, and the radial end surface of the upper fixing seat 32 abuts against the inner arc-shaped stopper 13 .

[0054] Preferably, a plurality of upper arc-shaped guide grooves 12 are provided and are distributed at intervals along the radial direction of the curved beam 100 , and each of the male mold modules 3 is connected to an upper limit block 38 that is plugged into and fits with each of the upper arc-shaped guide grooves 12 .

[0055] The upper arc guide groove 12 and the inner arc stopper 13 both play the role of radially limiting the punch module 3, ensuring that the axial direction of the stamping portion 31 of the punch module 3 is completely coincident with the axial direction of the mounting hole of the curved beam 100, thereby avoiding misalignment of the punch module 3.

[0056] In some embodiments, the lower mold plate 2 and the concave mold module 4 may be connected by Figure 5 and Fig.10 The structure shown, see Figure 5 and Fig.10 , defining the extension direction of the bending beam 100 as the reference circumferential direction; the lower template 2 is provided with a plurality of second positioning holes 21 spaced apart along the reference circumferential direction; the die composition includes a plurality of die modules 4 spaced apart along the reference circumferential direction, and the number of die modules 4 is less than or equal to the number of the second positioning holes 21; each die module 4 is fixed in one of the second positioning holes 21 by a second positioning pin 45.

[0057] Each die module 4 has a positioning portion 41. The die modules 4 are not directly fixed on the lower template 2, and the position of each die module 4 relative to the lower template 2 can be changed, specifically by positioning through the second positioning pins 45; although the position of each die module 4 can be changed, since the plurality of second positioning holes 21 are distributed along the reference circumferential direction, that is, after the die modules 4 are fixed by the second positioning pins 45, the plurality of die modules 4 are still distributed along the reference circumferential direction, so that the distribution of the plurality of positioning portions 41 conforms to the bending structure of the curved beam 100.

[0058] It should be noted that the plurality of concave die modules 4 correspond one to one to the plurality of convex die modules 3 .

[0059] In this embodiment, the die assembly is divided into a plurality of die modules 4 , and the number of the second positioning holes 21 is greater than or equal to the number of the die modules 4 , so that the fixed position of each die module 4 can be changed to adapt to the punching position requirements of different bending beams 100 .

[0060] Specifically, when replacing the bending beam 100 of a different vehicle model, after separating the upper template 1 from the lower template 2, take out the second positioning pin 45 to separate the die module 4 from the lower template 2, and then move the die module 4 to a suitable angle according to the position of the mounting hole of the bending beam 100, and fix it again with the second positioning pin 45 to achieve rapid adjustment of the mold when punching holes at different positions.

[0061] In some embodiments, the above-mentioned die module 4 can be used as follows Figure 8 The structure shown, see Figure 8 The female mold module 4 includes a lower fixed seat 42, a positioning block 43 and a material receiving box 44. The lower fixed seat 42 is arranged on the lower mold plate 2; the positioning block 43 is arranged on the lower fixed seat 42; the positioning block 43 has a positioning portion 41; the material receiving box 44 is arranged on the lower fixed seat 42 and is located below the positioning portion 41. In addition, the abutment block 46 is fixed on the lower fixed seat 42.

[0062] The lower fixing seat 42 is used to connect with the lower template 2 so that the die module 4 is fixed as a whole. The positioning block 43 is used to connect with the positioning part 41. In addition, a waste crusher can be provided on the positioning part 41. The material collecting box 44 is used to collect the waste punched down by the punching part 31.

[0063] In some embodiments, the lower mold plate 2 and the concave mold module 4 may be connected by Figure 5 , Figure 8 and Fig.10 The structure shown, see Figure 5 , Figure 8 and Fig.10 The top surface of the lower template 2 is provided with a lower arc guide groove 22, and the lower arc guide groove 22 is extended along the reference circumferential direction; the lower fixed seat 42 is connected to a lower limit block 47, and the lower limit block 47 is inserted in the lower arc guide groove 22; specifically, the lower limit block 47 is located in the lower arc guide groove 22 and is fixed to the lower template 2 by bolts.

[0064] A lower outer arc stopper 23 is further provided on the top surface of the lower template 2 . The lower outer arc stopper 23 is extended along the reference circumferential direction, and the radial end surface of the lower fixing seat 42 abuts against the lower outer arc stopper 23 .

[0065] Preferably, a plurality of lower arc-shaped guide grooves 22 are provided and are distributed at intervals along the radial direction of the curved beam 100 , and each of the die modules 4 is connected to a lower limit block 47 that is plugged into and fits with each of the lower arc-shaped guide grooves 22 .

[0066] The lower arc-shaped guide groove 22 and the lower outer arc-shaped stopper 23 both play a role in radially limiting the die module 4, ensuring that the plurality of positioning portions 41 are compatible with the curved structure of the curved beam 100, thereby avoiding misalignment of the die module 4.

[0067] In addition, an upper outer arc stopper 14 is further provided on the bottom surface of the upper mold plate 1 . The upper outer arc stopper 14 is extended along the reference circumferential direction, and the radial end surface of the positioning block 43 abuts against the upper outer arc stopper 14 .

[0068] The upper outer arc stopper 14 plays a role in radial positioning of the positioning block 43, and further plays a role in preventing the die module 4 from being offset and misaligned during punching.

[0069] In some embodiments, the roof bow beam punching die can also be used as follows: Figure 2 The structure shown, see Figure 2 The bottom surface of the upper template 1 is connected with a pressing plate 5, and when the upper template 1 and the lower template 2 are molded together, the pressing plate 5 is used to press the bending beam 100.

[0070] The shape of the pressing plate 5 is adapted to the shape of the arc section of the bending beam 100. The pressing plate 5 is fixed to the bottom surface of the upper mold plate 1 by bolts. When the upper mold plate 1 and the lower mold plate 2 are closed, the pressing plate 5 presses the bending beam 100 downward to prevent the bending beam 100 from radial misalignment.

[0071] In addition, in order to prevent the pressing plate 5 from slipping, stoppers are respectively provided at both ends and the middle portion of the pressing plate 5 , and the plurality of stoppers limit the pressing plate 5 in the circumferential direction thereof.

[0072] In some embodiments, an intermediate support seat 24 is further provided on the top surface of the lower template 2. Figure 5 shown.

[0073] The structure of the curved beam 100 is as follows: Figure 2 and Figure 3 As shown, it includes a middle main body section and two arc sections, and the two arc sections are bent downward relative to the middle main body section to adapt to the roof structure of the rail vehicle. It should be noted that the punching position of the curved beam 100 is generally on the arc section, so the female mold assembly and the male mold assembly also correspond to the arc section.

[0074] In order to prevent the middle main section of the curved beam 100 from sagging under the action of gravity when laid flat, an intermediate support seat 24 is further provided at the middle main section. The lateral portion of the intermediate support seat 24 is inserted into the interior of the curved beam 100 to support the curved beam 100 and prevent it from sagging.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roof curved beam punching die, characterized in that: include: Upper template (1); A lower template (2) is arranged in correspondence with the upper template (1) in an upper and lower manner; A male mold component is arranged on the upper mold plate (1); the male mold component has a stamping portion (31) adapted to the top outer surface of the curved beam (100); as well as A concave mold component is arranged on the lower mold plate (2); the concave mold component has a positioning portion (41) adapted to the top inner surface of the curved beam (100); Wherein, when the upper mold plate (1) and the lower mold plate (2) are molded together, an arc-shaped positioning space is formed between the male mold component and the female mold component, the curved beam (100) is placed flat in the arc-shaped positioning space, and the positioning portion (41) abuts against the top inner surface of the curved beam (100), and the punching portion (31) is used to punch a hole in the top of the curved beam (100).

2. The roof bow punching die according to claim 1, characterized in that: defining the extension direction of the curved beam (100) as a reference circumferential direction; The upper mold plate (1) is provided with a plurality of first positioning holes (11) spaced apart along the reference circumferential direction; the punch component comprises a plurality of punch modules (3) spaced apart along the reference circumferential direction, the number of the punch modules (3) being less than or equal to the number of the first positioning holes (11); each of the punch modules (3) is fixed in one of the first positioning holes (11) by a first positioning pin (35).

3. The roof bow punching die according to claim 2, characterized in that: The male mold module (3) comprises: an upper fixing seat (32) disposed on the upper template (1); the upper fixing seat (32) is connected to a guide wedge (34); and A sliding block (33) is located below the upper fixed seat (32); the sliding block (33) has a guiding inclined surface (331), and the guiding wedge block (34) is slidably arranged on the guiding inclined surface (331); the sliding block (33) is connected to the stamping portion (31), and the stamping portion (31) is arranged opposite to the guiding inclined surface (331); When the upper mold plate (1) and the lower mold plate (2) are closed, the sliding block (33) and the die are in contact with each other, and when the upper mold plate (1) is continuously pressed downward, the guide wedge block (34) and the guide inclined surface (331) are slidably matched to push the sliding block (33) and the stamping portion (31) to move toward the bending beam (100).

4. The roof bow punching die according to claim 3, characterized in that: The die assembly comprises a plurality of abutment blocks (46); the plurality of abutment blocks (46) correspond one-to-one to the plurality of sliding blocks (33); The upper surface of the abutment block (46) forms a sliding surface (461), and the vertical cross-section of the sliding surface (461) is a trapezoid or a triangle; the lower surface of the sliding block (33) is adapted to the sliding surface (461); Wherein, when the upper mold plate (1) and the lower mold plate (2) are molded together, the lower surface of the sliding block (33) is mounted on the sliding surface (461), and when the upper mold plate (1) is continuously pressed downward, the lower surface of the sliding block (33) is slidably matched with the sliding surface (461).

5. The roof bow punching die according to claim 3, characterized in that: The upper fixed seat (32) is also connected to a guide column (36); the sliding block (33) also has a guide cavity (333); the guide column (36) is inserted into the guide cavity (333); The upper fixed seat (32) is also connected to a stopper (37); the top surface of the sliding block (33) has a stopper notch (332); the stopper (37) corresponds to the stopper notch (332) in a vertical direction; when the stopper (37) is placed in the stopper notch (332), the guide wedge block (34) is in a stagnant state and no longer pushes the sliding block (33) to move.

6. The roof bow punching die according to claim 3, characterized in that: An upper arc-shaped guide groove (12) is provided on the bottom surface of the upper template (1), and the upper arc-shaped guide groove (12) is extended along the reference circumferential direction; an upper limit block (38) is connected to the upper fixed seat (32), and the upper limit block (38) is inserted into the upper arc-shaped guide groove (12); The bottom surface of the upper mold plate (1) is also provided with an inner arc-shaped stopper (13), the inner arc-shaped stopper (13) extending along the reference circumferential direction, and the radial end surface of the upper fixed seat (32) abuts against the inner arc-shaped stopper (13).

7. The roof bow punching die according to claim 1, characterized in that: defining the extension direction of the curved beam (100) as a reference circumferential direction; The lower mold plate (2) is provided with a plurality of second positioning holes (21) spaced apart along the reference circumferential direction; the die assembly comprises a plurality of die modules (4) spaced apart along the reference circumferential direction, the number of the die modules (4) being less than or equal to the number of the second positioning holes (21); each of the die modules (4) is fixed in one of the second positioning holes (21) by a second positioning pin (45).

8. The roof bow punching die according to claim 7, characterized in that: The die module (4) comprises: A lower fixing seat (42) is arranged on the lower template (2); A positioning block (43) is arranged on the lower fixing seat (42); the positioning block (43) has the positioning portion (41); and The material receiving box (44) is arranged on the lower fixing seat (42) and is located below the positioning portion (41).

9. The roof bow punching die according to claim 8, characterized in that: The top surface of the lower template (2) is provided with a lower arc-shaped guide groove (22), and the lower arc-shaped guide groove (22) is extended along the reference circumferential direction; the lower fixing seat (42) is connected with a lower limit block (47), and the lower limit block (47) is inserted into the lower arc-shaped guide groove (22); The top surface of the lower template (2) is also provided with a lower outer arc-shaped stopper (23), the lower outer arc-shaped stopper (23) is extended along the reference circumferential direction, and the radial end surface of the lower fixed seat (42) abuts against the lower outer arc-shaped stopper (23); The bottom surface of the upper mold plate (1) is also provided with an upper outer arc-shaped stopper (14), the upper outer arc-shaped stopper (14) extending along the reference circumferential direction, and the radial end surface of the positioning block (43) abuts against the upper outer arc-shaped stopper (14).

10. The roof bow punching die according to claim 1, characterized in that: A pressing plate (5) is connected to the bottom surface of the upper mold plate (1), and when the upper mold plate (1) and the lower mold plate (2) are molded together, the pressing plate (5) is used to press the bending beam (100).

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