CN113083941B - Automobile top cover shaping die and forming method thereof - Google Patents
Automobile top cover shaping die and forming method thereof Download PDFInfo
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- CN113083941B CN113083941B CN202110354232.7A CN202110354232A CN113083941B CN 113083941 B CN113083941 B CN 113083941B CN 202110354232 A CN202110354232 A CN 202110354232A CN 113083941 B CN113083941 B CN 113083941B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/12—Straightening vehicle body parts or bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The invention provides an automobile roof shaping die and a forming method thereof, wherein the automobile roof shaping die comprises a lower die and an upper die, wherein the lower die is provided with an upper supporting surface for supporting a top section, a side forming surface for forming a tail section, a fillet connecting surface for connecting the upper supporting surface and the side forming surface and a side supporting surface for supporting a process edge pressing section; the upper die correspondingly comprises a positive pressure material block, a positive rounded corner pressing block, a side pressing block and a side pressing material block. When the mold is closed, the positive pressure material block correspondingly presses the top section, the side pressure material block correspondingly presses the technological edge pressing section, the side shaping press block laterally trims the tail section, and the side shaping press block and the positive shaping fillet press block are used for jointly forming the fillet connecting section. Because the positive whole fillet briquetting is introduced with positive plastic fillet linkage segment in the later stage of side plastic afterbody section, avoided the fillet linkage segment the condition that does not have the compress tightly to appear, the top section that the offside plastic leads to warp simultaneously carries out positive plastic for the top section is stable with the department of meeting characteristic of fillet linkage segment, and the top section does not have sunken deformation.
Description
Technical Field
The invention relates to the technical field of automobile top cover processing, in particular to an automobile top cover shaping die and a forming method thereof.
Background
The outer shape of the automobile body is formed by welding a plurality of covering parts with larger outline size and spatial curved surface shape, so that the requirements on the size precision and the surface quality of the covering parts are higher. The automobile top cover outer plate is used as one of the core outer covering parts and is respectively lapped with the side wall outer plate and the tail door outer plate, and the precision and the surface quality of stamping parts directly influence the precision of the whole automobile and the appearance quality of the automobile body. Due to the requirements of product modeling and assembly functions, a Z-shaped negative angle structure exists on the whole edge of the lap joint position of the outer plate of the automobile roof and the outer plate of the tail door, and the double-sided negative angle structure needs to be realized through side shaping.
When the existing shaping die is used for laterally shaping a 'B' -shaped negative angle structure, a local neutral position region which can not be pressed can be formed at a fillet connecting section of the 'B' -shaped negative angle structure in a circle in a figure 2. When the side finishing is carried out, the side finishing pressing block is in contact with the plate to deform, the negative angle structure is only formed through the male die surface below when the die is closed, and a pressing part is not arranged above the plate, so that the top section of the top cover outer plate is sunken and deformed in the side finishing process, and the quality of the surface product and the precision of the tail section are influenced.
Disclosure of Invention
The invention mainly aims to provide an automobile top cover shaping die, and aims to solve the problem that the top section of an automobile top cover is easy to dent and deform when the conventional shaping die is used for shaping a Z-shaped negative angle structure by side shaping.
In order to achieve the above object, the present invention provides a vehicle roof shaping mold, the vehicle roof including a top section, a tail section, a fillet connecting section between the top section and the tail section, and a process edging section at a side of the tail section far from the fillet connecting section, the mold comprising:
a lower die formed with an upper support surface for supporting the top section, a side forming surface for forming the tail section, a fillet connecting surface connecting the upper support surface and the side forming surface, and a side support surface for supporting the process edging section; and the number of the first and second groups,
the upper die comprises an upper die base which is arranged above the lower die and can move up and down, wherein a positive pressure material block, a positive rounding corner pressing block, a side rounding pressing block and a side pressing material block are arranged on the upper die base, the positive pressure material block, the positive rounding corner pressing block, the side rounding pressing block and the side pressing material block are respectively arranged corresponding to the upper supporting surface, the fillet connecting surface, the side forming surface and the side supporting surface, the positive pressure material block can be movably arranged on the upper die base up and down, the positive rounding corner pressing block is fixedly arranged on the upper die base, and the side rounding pressing block and the side pressing material block respectively have front-back and up-down moving strokes relative to the upper die base;
the upper die base moves downwards, the positive pressure material block moves downwards to be correspondingly pressed and held on the top section, the side pressure material block moves downwards to be correspondingly pressed and held on the process edge pressing section, the side finishing pressure block moves relative to the upper die base to laterally finish the tail section, the upper die base continues to move downwards, and the side finishing pressure block and the right finishing fillet pressure block are used for jointly forming the fillet connecting section.
Optionally, the lower mold includes:
a lower die holder;
the first shaping male die comprises a mounting part and a shaping convex part arranged on the mounting part, the mounting part is arranged on the lower die holder, the upper end surface of the shaping convex part forms the upper supporting surface, and the fillet connecting surface is formed between the upper end surface of the shaping convex part and the side surface of the shaping convex part; and the number of the first and second groups,
the second shaping male die is arranged on the lower die seat, the second shaping male die is arranged on the rear side of the shaping convex part, the front side surface of the second shaping male die is connected with the rear side surface of the shaping convex part, the upper end surface part of the second shaping male die and the rear side surface of the shaping convex part form the side forming surface together, and the rest part of the upper end surface of the second shaping male die forms the side supporting surface;
the upper die base is movably arranged on the lower die base along the vertical direction.
Optionally, the second shaping male die is fixedly mounted on the lower die holder;
the mounting part can be arranged on the lower die holder in a sliding manner in the front-back direction, and is provided with a shaping position and a demolding position, wherein the shaping position can be in backward sliding until the rear side surface of the shaping convex block is abutted against the front side surface of the second shaping male die, and the demolding position can be in forward sliding until the rear side of the shaping convex block is separated from the front side surface of the second shaping male die;
the automobile roof shaping mold comprises a switching component, and the switching component is used for switching the mounting part between the shaping position and the demolding position.
Optionally, the mounting portion is formed with a first mating ramp;
the switching assembly includes:
the first driving block is arranged on the upper die base, a first driving inclined surface is formed on the first driving block, and in the downward moving stroke of the upper die base, the first driving inclined surface abuts against the first matching inclined surface to drive the mounting part to be switched from the demolding position to the shaping position; and the number of the first and second groups,
the first elastic piece is connected to the mounting part and the lower die holder, and the first elastic piece resets and drives the mounting part to be switched to a demoulding position from a shaping position.
Optionally, the die further comprises a sliding fit structure, the sliding fit structure comprises a sliding guide surface and a sliding guide block which are in sliding fit with each other, one of the sliding guide surface and the sliding guide block is arranged on the lower die base, and the other is arranged on the mounting portion.
Optionally, the automobile roof shaping mold further comprises a front-back limiting assembly, and the front-back limiting assembly comprises:
the limiting matching block is arranged on the front side surface of the mounting part; and the number of the first and second groups,
the limiting block is arranged on the lower die seat corresponding to the limiting matching block and can slide left and right to be provided with a supporting position where the limiting back side surface abuts against the front side surface of the limiting matching block and a abdicating position where the limiting back side surface is separated from the front side surface of the matching block;
wherein, when the installation department is in the plastic position, the stopper is in the support position, and when the installation department is in the drawing of patterns position, the stopper is in the position of stepping down.
Optionally, the upper die further comprises an upper driving seat, the upper driving seat is mounted on the upper die base and has a forward-backward moving stroke and a vertical-downward moving stroke relative to the upper die base, the lateral pressing block is fixedly arranged on the upper driving seat, and the lateral pressing block is movably mounted on the upper driving seat.
Optionally, the mounting part also forms a guide surface inclined downwards from back to front;
the upper driving seat is provided with a guide matching part corresponding to the guide surface, and the guide matching part slides along the guide surface.
Optionally, the side press block is mounted on the upper driving seat through an elastic connecting piece;
the automobile top cover shaping die further comprises a side pressing block driving assembly, the side pressing block driving assembly comprises an elongated groove and a pushing block, the elongated groove and the pushing block are matched with each other, the elongated groove extends along the moving direction of the upper driving seat, the pushing block can be movably arranged in the elongated groove along the elongated groove, one of the elongated groove and the pushing block is arranged on the side surface of the side pressing block in the left-right direction, and the other one of the elongated groove and the pushing block is correspondingly arranged on the upper driving seat.
The invention also provides a method for forming the automobile top cover, which comprises the following steps:
drawing and processing a sheet material into an automobile roof prefabricated part, wherein the automobile roof prefabricated part comprises a formed top section, a tail section to be formed and a fillet connecting section to be formed between the top section and the tail section;
and simultaneously performing positive shaping and side shaping on the automobile roof prefabricated part to form the fillet connecting section and the tail section.
When the automobile roof reshaping mould provided by the invention is used for reshaping the automobile roof, firstly, a drawn automobile roof prefabricated part is placed on a lower mould; then the upper die base moves downwards to a certain height, the positive pressure material block continuously moves downwards to compact the top section of the automobile top cover prefabricated part, the side reforming block and the side pressure material block continuously move downwards and forwards, the side pressure material block firstly contacts with the process edge pressing section and compacts the process edge pressing section, and then the side reforming block contacts with the material and is matched with the side forming surface of the lower die to gradually form the tail section; meanwhile, in the middle and later period of the forming tail section of the side rounding pressing block, the upper die base continues to move downwards to enable the positive rounding corner pressing block to contact the plate and to be matched with the round corner connecting surface to gradually form the round corner connecting section. Because the positive whole fillet pressing block positive whole fillet connecting section is introduced at the later stage of the side shaping tail section, the condition that the fillet connecting section is free of neutral position and compression is avoided, and meanwhile, the top section deformation caused by side shaping is positively shaped, so that the product characteristics of the joint of the top section and the fillet connecting section are stable, and the top section is free of concave deformation. In addition, the tight crimping of malleation material piece is in vapour car roof's top section, and to the drawing deformation of top section when reducing tail section side plastic, the top section that reduces to lead to owing to the inhomogeneous internal stress of the whole process of side caves in and warp to and the whole back tail section resilience deformation of reduction. The side pressure material block is tightly pressed on the process edge pressing section before the side shaping is started, so that the sheet material of the tail section is expanded and formed during the side shaping, and the problems of wrinkling and the like caused by rapid inflow of the sheet material during the side shaping are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram showing a comparison of the front and rear structures of a drawn and formed automobile roof preform to obtain an automobile roof transition piece through forward shaping in the prior art;
FIG. 2 is a schematic diagram showing a front-to-back structure comparison of the roof transition piece of FIG. 1 after side trimming to obtain a roof;
FIG. 3 is a schematic structural diagram of an embodiment of a vehicle roof provided in the present invention;
FIG. 4 is a top plan view of the automobile roof shown in FIG. 3;
FIG. 5 is an enlarged partial top view of the vehicle roof shown in FIG. 4;
FIG. 6 is a schematic cross-sectional view of an embodiment of a trimming mold for a vehicle roof according to the present invention;
FIG. 7 is an enlarged, fragmentary, cross-sectional view of the automotive roof reforming mold shown in FIG. 6;
FIG. 8 is a schematic structural view of the automobile roof shaping mold shown in FIG. 6;
FIG. 9 is a schematic structural view of a lower die of the automobile roof shaping die shown in FIG. 6;
FIG. 10 is a schematic partial structural view of the automobile roof trimming mold shown in FIG. 6;
fig. 11 is a partial structural view of a lower die of the automobile roof reforming die shown in fig. 6.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front, rear, outer and inner … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The forming process of the tail section 120 of the existing automobile roof generally comprises three processes, namely a first process: firstly, forming the structure of the drawing surface 01 in the figure 1 by drawing; a second step: the partial positive shaping is carried out on the vertical wall surface of the tail section 120 to form a structure of a transition surface 02 in the figure 1; a third step: the tail section 120 is side-shaped to form the product side 03 configuration of fig. 2. In the forming process, when the third process is completed, a local "neutral" region where material cannot be pressed appears in the rounded connecting section 130 of the "b" shaped negative angle structure 150 in the circle in fig. 2. During side finishing, the side finishing pressing block 320 contacts the plate to deform, the Z-shaped negative angle structure 150 is only formed by the lower male die profile when the die is closed, and a pressing part is not arranged above the plate, so that the rear end of the top section 110 of the top cover outer plate is sunken and deformed during the side finishing process, and the quality of the surface product is influenced; in addition, the lower end of the fillet connecting section 130 has a large internal stress after the side finishing, and the tail section 120 has a large influence on the accuracy due to the elastic deformation after the side finishing.
In view of the above, the invention further provides a shaping die for an automobile roof, so as to solve the problem that the top section 110 of the automobile roof is easy to be sunken and deformed when the side shaping die is used for shaping the negative angle structure 150 in a shape like a Chinese character 'yi'. Referring to fig. 3 to 5, the sunroof includes a top section 110, a tail section 120, a fillet connecting section 130 between the top section 110 and the tail section 120, and a process edging section 140 on a side of the tail section 120 away from the fillet connecting section 130, and, referring to fig. 6 to 11, the sunroof reshaping mold includes a lower mold and an upper mold, wherein the lower mold is formed with an upper support surface 221 to support the top section 110, a side molding surface 222 to mold the tail section 120, a fillet connecting surface 223 connecting the upper support surface 221 and the side molding surface 222, and a side support surface 224 to support the process edging section 140; the upper die comprises an upper die holder which is arranged above the lower die and can move up and down, a positive pressure block 310, a positive rounded corner pressing block 330, a side trimming pressing block 320 and a side pressing block 340 are sequentially arranged on the upper die holder from front to back, the positive pressure block 310, the positive rounded corner pressing block 330, the side trimming pressing block 320 and the side pressing block 340 are respectively arranged corresponding to the upper supporting surface 221, the rounded corner connecting surface 223, the side forming surface 222 and the side supporting surface 224, the positive pressure block 310 can be movably arranged on the upper die holder up and down, the positive rounded corner pressing block 330 is fixedly arranged on the upper die holder, and the side trimming pressing block 320 and the side pressing block 340 both have front-to-back and up-to-down moving strokes relative to the upper die holder; wherein, the upper die base moves downwards, the positive pressure material block 310 moves downwards to be correspondingly pressed on the top section 110, the side pressure material block 340 moves downwards to be correspondingly pressed on the edge pressing section 140 of the pressing and holding process, the side trimming press block 320 moves relative to the upper die base to laterally trim the tail section 120, the upper die base continues to move downwards, and the side trimming press block 320 and the positive trimming press block 330 are used for jointly forming the fillet connecting section 130.
When the automobile roof reshaping mould provided by the invention is used for reshaping the automobile roof, firstly, a drawn automobile roof prefabricated part is placed on a lower mould; then the upper die base moves downwards to a certain height, the positive pressure material block 310 continues to move downwards to compact the top section 110 of the automobile roof prefabricated part, the side pressure material block 320 and the side pressure material block 340 continue to move downwards and forwards, the side pressure material block 340 contacts the process edge pressing section 140 firstly and compacts the process edge pressing section 140, and then the side pressure material block 320 contacts the plate and is matched with the side molding surface 222 of the lower die to gradually form the tail section 120; meanwhile, in the middle and later stages of the forming of the tail section 120 by the side rounding press block 320, the upper die base continues to move downwards so that the positive rounding press block 330 contacts the plate and cooperates with the rounding connecting surface 223 to gradually form the fillet connecting section 130. Because the positive whole fillet pressing block 330 is introduced into the positive whole fillet connecting section 130 at the later stage of the side shaping tail section 120, the situation that the fillet connecting section 130 is free of neutral position and compression is avoided, and meanwhile, the deformation of the top section 110 caused by the side shaping is positively shaped, so that the product characteristics of the joint of the top section 110 and the fillet connecting section 130 are stable, and the top section 110 is free of concave deformation. In addition, the positive pressure material block 310 is tightly pressed on the top section 110 of the automobile roof, so that the pulling deformation of the top section 110 during the side shaping of the tail section 120 is reduced, the concave deformation of the top section 110 caused by the uneven internal stress of the side shaping process is reduced, and the rebound deformation of the tail section 120 after the side shaping is reduced. The side pressing block 340 is tightly pressed on the process edging section 140 before the side shaping is started, so that the sheet material of the tail section 120 is expanded and formed during the side shaping, and the problems of wrinkling and the like caused by rapid inflow of the sheet material during the side shaping are avoided.
It should be noted that the "b" shaped negative angle structure 150 refers to a structure in which the sheet material located at the rear side of the top section 110 of the car roof is bent downward to more than 90 ° so that the top section 110 and the tail section 120 form the "b" shaped negative angle structure 150 having an acute angle, and the rounded corner connecting section 130 refers to an acute angle portion of the "b" shaped negative angle structure 150, as shown by the circled area in fig. 2 and 3.
With continued reference to fig. 6, the lower die comprises a lower die holder, a first shaping male die 200 and a second shaping male die 400, the first shaping male die 200 comprises a mounting part 210 and a shaping convex part 220 arranged on the mounting part 210, the mounting part 210 is arranged on the lower die holder, an upper supporting surface 221 is formed on the upper end surface of the shaping convex part 220, and a fillet connecting surface 223 is formed between the upper end surface of the shaping convex part 220 and the side surface of the shaping convex part 220; the second shaping convex die 400 is arranged on the lower die seat, the second shaping convex die 400 is arranged at the rear side of the shaping convex part 220, the front side surface of the second shaping convex die 400 is connected with the rear side surface of the shaping convex part 220, the upper end surface part of the second shaping convex die 400 and the rear side surface of the shaping convex part 220 form a side forming surface 222 together, and the rest part of the upper end surface of the second shaping convex die 400 forms a side supporting surface 224. The upper die base is movably arranged on the lower die base along the up-down direction.
Because the negative angle structure 150 is formed between the top section 110 and the tail section 120 of the shaped automobile roof, the fillet connecting section 130 of the negative angle structure 150 prevents the automobile roof from being demolded upwards during demolding. In view of this, in the automobile roof shaping mold provided by the present invention, the first shaping male mold 200 may be movably disposed on the lower mold base in the front-back direction, so that after shaping, the first shaping male mold 200 moves forward to the fillet connecting surface 223 on the shaping convex portion 220 and completely exits the fillet connecting section 130 of the automobile roof, so that the automobile roof can move upward to be demolded. Specifically, referring to fig. 6 and 8, in the present embodiment, the second shaping punch 400 is fixedly mounted on the lower die holder; the mounting part 210 can be arranged on the lower die base in a sliding mode in the front-back direction, and the mounting part 210 is provided with a shaping position and a demolding position, wherein the shaping position can slide backwards until the rear side face of the shaping convex block is abutted to the front side face of the second shaping convex die 400, and the demolding position can slide forwards until the rear side face of the shaping convex block is separated from the front side face of the second shaping convex die 400. When the mounting seat is located at the demolding position, the fillet connecting surface 223 on the shaping convex part 220 completely exits the fillet connecting section 130 of the automobile roof, so that the automobile roof can move upwards to perform demolding. The first shaping male die 200 only has the moving stroke along the front-back direction, and does not have the moving stroke along the up-down direction, so that the height of the lower die can be effectively reduced, the requirement of automatic production is met, the size of the die is reduced, and the development cost of the die tool is reduced.
Further, the sunroof dressing mold includes a switching assembly for switching the mounting portion 210 between the dressing position and the demolding position. In the invention, a first matching inclined surface 2111 is formed on the mounting part 210, the switching component comprises a first driving block 360 and a first elastic part 240, the first driving block 360 is arranged on the upper die holder, a first driving inclined surface 361 is formed on the first driving block 360, and in the process of moving the upper die holder downwards, the first driving inclined surface 361 abuts against the first matching inclined surface 2111 to drive the mounting part 210 to be switched from a demoulding position to a shaping position; the first elastic element is connected to the mounting portion 210 and the lower die holder, and when the upper die holder moves upwards to the position where the first driving block 360 is separated from the first driving inclined plane 361, the elastic element resets to drive the mounting portion 210 to switch from the shaping position to the demolding position.
As for the specific structure of the mounting portion 210 forming the first matching inclined surface 2111, the present invention is not limited as long as the effect of the first matching inclined surface 2111 and the first driving inclined surface 361 abutting against and driving the mounting portion 210 to move can be achieved. In this embodiment, referring to fig. 6, the mounting portion 210 includes a mounting portion body, and a first supporting portion 211 and a second supporting portion 212 provided at both ends of the mounting portion body in the front-rear direction, and a first matching inclined surface 2111 is formed at a front side surface of the second supporting portion 212. The first engaging inclined surface 2111 is inclined downward from the rear to the front, and the first driving inclined surface 361 on the first driving block 360 is correspondingly inclined downward from the rear to the front, so that when the first driving block 360 moves downward, the first driving inclined surface 361 provides a backward component force to the first engaging inclined surface 2111, and the mounting portion 210 is driven to move backward to switch from the demolding position to the shaping position.
As to the specific structure of the first elastic element 240, the present invention is not limited, and the first elastic element may be a common steel spring element, or may be a nitrogen spring provided in this embodiment. The present invention is not limited to the mounting position of the first elastic member 240, as long as the function of switching the reset driving mounting portion 210 from the shaping position to the demolding position can be achieved. In this embodiment, referring to fig. 8, one end of the first elastic element 240 is connected to the rear side surface of the second supporting portion 212, and the other end is connected to the lower die base. The switching assembly provided by the invention has the advantages of simple and effective structure and small occupied space, so that the volume of the lower die is reduced, and the cost is saved.
When the upper die and the lower die are combined to punch and shape the automobile roof, the upper die applies very large punching force to the lower die, and the invention also provides a forward and backward limiting component, so that when the first shaping male die 200 is at the shaping position, the forward and backward limiting component and the first driving block 360 jointly limit the first shaping male die 200 to slide forwards. The front and back limiting component comprises a limiting matching block 270 and a limiting block 231, wherein the limiting matching block 270 is arranged on the front side surface of the mounting part 210; the limiting block 231 is arranged on the lower die base corresponding to the limiting matching block 270, and the limiting block 231 can be arranged in a left-right sliding mode so as to have a supporting position where the rear side face of the limiting block 231 is abutted to the front side face of the limiting matching block 270 in a sliding mode and a yielding position where the rear side face of the limiting block is separated from the front side face of the matching block in a sliding mode; when the mounting portion 210 is in the shaping position, the limiting block 231 is in the supporting position, and when the mounting portion 210 is in the demolding position, the limiting block 231 is in the yielding position. In the shaping process, after the first driving block 360 drives the mounting part 210 to slide backwards to the shaping position, the limiting block 231 moves to the supporting position, so that the rear side surface of the limiting block 231 abuts against the front side surface of the limiting fitting block 270 to limit the mounting part 210 to slide forwards; when the shaping is finished, the first driving block 360 moves upwards to release the driving of the mounting part 210, meanwhile, the limiting block 231 releases the limiting of the mounting block, and the elastic piece drives the mounting part 210 to slide forwards to switch from the shaping position to the demoulding position.
The specific structure of the limit engaging block 270 disposed on the mounting portion 210 is not limited in the present invention, as long as the function of engaging the limit block 231 to limit the mounting portion 210 at the shaping position can be achieved. In this embodiment, referring to fig. 9, the limiting fitting block 270 is disposed on the front side surface of the first supporting portion 211 of the mounting portion 210, the automobile roof shaping mold further includes a limiting slide seat 230, the limiting block 231 is mounted on the rear side surface of the limiting slide seat 230, and the limiting slide seat 230 can be slidably disposed on the lower mold seat in the left-right direction, so that the limiting block 231 can be switched between the supporting position and the receding position. In this embodiment, the first driving block 360 and the limiting block 231 are respectively disposed at the front end and the rear end of the mounting portion 210, so that the mounting portion 210 is more balanced and limited at the shaping position.
In order to drive the limiting slide seat 230 to move left and right, the automobile roof shaping mold further comprises a limiting slide seat driving assembly, referring to fig. 8, the limiting slide seat driving assembly comprises a second driving block 370 and a second elastic piece, the second driving block 370 is arranged on the upper mold seat, a second driving inclined plane 371 is formed on the second driving block 370, a second matching inclined plane 232 is correspondingly formed on the limiting slide seat 230, and in the downward moving stroke of the upper mold seat, the second driving inclined plane 371 abuts against the second matching inclined plane 232 to drive the limiting slide seat 230 to slide so as to enable the limiting block 231 to be switched from the abdicating position to the supporting position; the second elastic element is connected with the limiting slide carriage 230 and the lower die holder, and the second elastic element resets to drive the limiting block 231 to switch from the supporting position to the abdicating position. Further, in the present embodiment, the second fitting slope 232 is provided inclined downward from the right to the left, and the second driving slope 371 is correspondingly provided inclined downward from the right to the left. Further, optionally, the second elastic member is a common steel elastic member, and/or a nitrogen spring.
In addition, in order to realize the sliding arrangement of the mounting seat along the front-back direction, the automobile top cover shaping mold also comprises a sliding fit structure. The present invention is not limited to the specific structure of the sliding fit structure, and in an embodiment, the sliding fit structure includes a guide rail and a slider, which are slidably fitted with each other, one of the guide rail and the slider is disposed on the lower die base, and the other of the guide rail and the slider is disposed on the mounting portion 210, the guide rail extends in the front-back direction, and the slider is movably disposed on the guide rail in the front-back direction. In this embodiment, the sliding fit structure includes a sliding guide surface and a sliding guide block 250 that are in sliding fit with each other, one of the sliding guide surface and the sliding guide block 250 is disposed on the lower die base, the other is disposed on the mounting portion 210, the sliding guide surface extends in the front-back direction, and the sliding guide block 250 can be mounted on the sliding guide surface in the front-back direction in a sliding manner, so that the mounting portion 210 can slide relative to the lower die base. Further, the end surface of the guide sliding block 250 contacting with the guide sliding surface is provided with a guide sliding medium to make the sliding more smooth. In this embodiment, the sliding guide 250 is a sliding guide plate, and the sliding guide medium is sliding guide graphite.
The invention is not limited to the specific structure of the sliding fit structure disposed on the mounting portion 210 and the lower die holder. In this embodiment, specifically, referring to fig. 6, a first protruding portion is convexly provided on a front side surface of the first supporting portion 211, a sliding fit structure is provided between a lower end surface of the first protruding portion and an upper end surface of the limiting slide seat 230, a second protruding portion is convexly provided on a rear side surface of the second supporting portion 212, and a sliding fit structure is provided between a lower end surface of the second protruding portion and the lower die base. Further, a guide sliding block 250 is arranged on the lower end face of the first extension portion, a guide sliding face is formed on the upper end face of the limiting sliding seat 230, a guide sliding block 250 is arranged on the lower end face of the second extension portion, and a guide sliding face is correspondingly arranged on the lower die seat. In this implementation, locate spacing slide 230 with the front end slidable of installation department 210, the die holder is located in the rear end slidable, realizes that overall structure is steady, avoids the plastic process to rock, or the too big slight deformation of side pressure.
Further, the first shaping male die 200 is disposed on the first supporting portion 211, the second shaping male die 400 is disposed between the first supporting portion 211 and the second supporting portion 212, a third extending portion 213 is convexly disposed on a rear side surface of the first supporting portion 211, and a sliding fit structure is disposed between an upper end surface of the third extending portion 213 and a lower end surface of the second shaping male die 400, so that the first shaping male die 200 can slide more smoothly. Alternatively, the upper end surface of the third protruding part 213 is provided with a guide block 250, and the lower end surface of the second shaping punch 400 forms a guide slide surface.
Referring to fig. 6, 8 and 10, the upper mold further includes an upper driving seat 350, the upper driving seat 350 is mounted on the upper mold base and has a moving stroke in a forward-backward direction and a forward-downward direction with respect to the upper mold base, the side pressing block 320 is fixedly disposed on the upper driving seat 350, and the side pressing block 340 is movably mounted on the upper driving seat 350.
In order to realize that the side pressing block 340 is movably arranged on the upper driving seat 350, the side pressing block 340 is arranged on the upper driving seat 350 through the elastic connecting piece 341, the automobile roof shaping mold further comprises a side pressing block driving assembly, referring to fig. 10, the side pressing block driving assembly comprises an elongated groove 381 and a pushing block 380 which are mutually matched, the elongated groove 381 extends along the moving direction of the upper driving seat 350, the pushing block 380 can be movably arranged in the elongated groove 381 along the elongated groove 381, one of the elongated groove 381 and the pushing block 380 is arranged on the side surface of the side pressing block 340 along the left-right direction, and the other is correspondingly arranged on the upper driving seat 350. When the upper driving seat 350 moves upward and rearward, the pushing block 380 pushes against the rear end surface of the elongated slot 381 to drive the side pressing block 340 to move upward obliquely, when the upper driving seat 350 moves forward and downward until the side pressing block 340 contacts the side supporting surface 224, the upper driving seat 350 continues to move forward and downward, so that the side shaping block 320 gradually contacts the side forming surface 222, and simultaneously the pushing block 380 moves along the elongated slot 381 to press the elastic connecting member 341, so as to increase the pressure of the side pressing block 340 on the process edging section 140. In this embodiment, the long groove 381 is disposed on the lateral side of the side press block 340 along the left-right direction, and the pushing block 380 is disposed on the upper driving seat 350. Further, two long grooves 381 are arranged, the two long grooves 381 are respectively arranged on the two side surfaces of the side press blocks 340 along the left and right directions, and correspondingly, the upper driving seat 350 is provided with two pushing blocks 380 to drive the side press blocks 340 to move in a balanced manner. Optionally, pusher block 380 includes side pins.
The present invention is not limited with respect to the structure of the elastic connection member 341. Alternatively, the elastic connector 341 may be a spring, an elastic plastic member, a nitrogen spring, or the like.
Further, the automobile roof shaping mold further comprises a side pressure block limiting assembly, the side pressure block limiting assembly comprises a stop block 390 arranged on the side pressure block, the second shaping male mold 400 is correspondingly provided with a stop matching surface, and when the side pressure block moves downwards, the stop block 390 abuts against the stop matching surface to limit the moving stroke of the side pressure block 340 to the second shaping male mold 400. The active stroke of the side press block 340 is individually adjusted by the side press block limiting assembly to match the active stroke of the side press block 340 and the side trim block 320, and the pressure applied by the side press block 340 to the process edging section 140 is adjusted by controlling the active stroke of the side press block 340.
In addition, in order to guide the movement of the upper driving seat 350, the mounting portion 210 is further formed with a guide surface 261 which is inclined downward from the rear to the front; the upper driving holder 350 is provided with a guide engagement portion 352 corresponding to the guide surface 261, and the guide engagement portion 352 slides along the guide surface 261 to allow the upper driving holder 350 to have a forward-backward and upward-downward moving stroke. Specifically, in the present embodiment, the upper end surface of the body of the mounting portion 210 is provided with a guide block 260, and the upper end surface of the guide block 260 is formed with a guide surface 261 that is inclined downward from the rear to the front. When the upper driving holder 350 moves down, the guide engagement portion 352 presses against the guide surface 261 and slides along the guide surface 261, and the support of the upper driving holder 350 by the guide surface 261 enables the upper driving holder 350 to slide downward and forward more smoothly.
The invention also provides a forming method of the automobile top cover, which comprises the following steps:
s10, drawing and processing the sheet into an automobile roof preform, wherein the automobile roof preform comprises a formed top section 110, a tail section 120 to be formed and a fillet connecting section 130 to be formed between the top section 110 and the tail section 120;
and S20, simultaneously performing positive reshaping and side reshaping on the automobile roof prefabricated part to form the fillet connecting section 130 and the tail section 120.
According to the automobile roof forming method, after the automobile roof prefabricated part is obtained through drawing, the automobile roof prefabricated part is subjected to forward shaping and side shaping simultaneously based on the automobile roof shaping die provided by the invention, wherein the automobile roof is formed through the side shaping forming tail section 120 and the forward shaping forming fillet connecting section 130 in one step. It should be noted that the positive shaping means that the positive pressure block moves up and down to achieve the punch forming, the side shaping means that the side pressure block 320 moves up and down in an inclined direction forming a certain angle with the up and down direction to achieve the punch forming, and in the process of the side shaping, the side pressure block 320 moves up and down and back and forth simultaneously.
In step S20, for the areas of the automobile roof to be formed by the positive reforming and the side reforming, referring to fig. 4 and 5, the top section 110 is an area a and an area E, and is pressed against the upper support surface 221 by the positive briquetting 310; the tail section 120 is a C area surrounded by a side integral parting line bcdjf and is subjected to side shaping forming through the cooperation of a side integral pressing block 320 and a side forming surface 222; the process edge pressing section 140 is a B area behind a side material pressing parting line abcde and is pressed on the side supporting surface 224 through a side material pressing block 340; the fillet connecting section 130 is a D area surrounded by a positive integral parting line fkjihg and is positively shaped and formed by a positive integral fillet pressing block 330 and a fillet connecting surface 223.
In step S20, to avoid the deformation of the areas E on the two sides of the rear end of the top cover section during the side trimming process, the pressing pressure may be increased on the areas E on the two sides of the rear end of the top section 110 to avoid the deformation of the positive pressure material block 310 after the removal of the material block due to the large internal stress generated by the deformation of the material during the forming process. Specifically, in the process of pressing the top cover section by the positive pressure material block 310, the pressing pressure is increased by processing the regions on the two sides of the rear end of the top cover section through an unequal gap scheme and an increased elastic pressing part, and the deformation of the top cover section in the lateral whole process is reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a vapour car roof plastic mould, vapour car roof includes top section, afterbody section, is in the top section with fillet linkage segment between the afterbody section and be in the afterbody section is kept away from the technology edging section of fillet linkage segment one side, its characterized in that, vapour car roof plastic mould includes:
a lower die formed with an upper support surface for supporting the top section, a side forming surface for forming the tail section, a fillet connecting surface connecting the upper support surface and the side forming surface, and a side support surface for supporting the process edging section; and the number of the first and second groups,
the upper die comprises an upper die base which is arranged above the lower die and can move up and down, wherein a positive pressure material block, a positive rounding corner pressing block, a side rounding pressing block and a side pressing material block are arranged on the upper die base, the positive pressure material block, the positive rounding corner pressing block, the side rounding pressing block and the side pressing material block are respectively arranged corresponding to the upper supporting surface, the fillet connecting surface, the side forming surface and the side supporting surface, the positive pressure material block can be movably arranged on the upper die base up and down, the positive rounding corner pressing block is fixedly arranged on the upper die base, and the side rounding pressing block and the side pressing material block respectively have front-back and up-down moving strokes relative to the upper die base;
the upper die base moves downwards, the positive pressure material block moves downwards to be correspondingly pressed and held on the top section, the side pressure material block moves downwards to be correspondingly pressed and held on the process edge pressing section, the side finishing pressure block moves relative to the upper die base to laterally finish the tail section, the upper die base continues to move downwards, and the side finishing pressure block and the right finishing fillet pressure block are used for jointly forming the fillet connecting section;
the lower die comprises:
a lower die holder;
the first shaping male die comprises a mounting part and a shaping convex part arranged on the mounting part, the mounting part is arranged on the lower die holder, the upper end surface of the shaping convex part forms the upper supporting surface, and the fillet connecting surface is formed between the upper end surface of the shaping convex part and the side surface of the shaping convex part; and the number of the first and second groups,
the second shaping male die is arranged on the lower die seat, the second shaping male die is arranged on the rear side of the shaping convex part, the front side surface of the second shaping male die is connected with the rear side surface of the shaping convex part, the upper end surface part of the second shaping male die and the rear side surface of the shaping convex part form the side forming surface together, and the rest part of the upper end surface of the second shaping male die forms the side supporting surface;
the upper die base is movably arranged on the lower die base along the vertical direction.
2. The automobile roof trim mold of claim 1, wherein the second trimming male mold is fixedly mounted on the lower mold base;
the mounting part can be arranged on the lower die holder in a sliding manner in the front-back direction, and is provided with a shaping position and a demolding position, wherein the shaping position can be in backward sliding until the rear side surface of the shaping convex block is abutted against the front side surface of the second shaping male die, and the demolding position can be in forward sliding until the rear side of the shaping convex block is separated from the front side surface of the second shaping male die;
the automobile roof shaping mold comprises a switching component, and the switching component is used for switching the mounting part between the shaping position and the demolding position.
3. The automobile roof trimming mold of claim 2, wherein the mounting portion is formed with a first mating slope;
the switching assembly includes:
the first driving block is arranged on the upper die base, a first driving inclined surface is formed on the first driving block, and in the downward moving stroke of the upper die base, the first driving inclined surface abuts against the first matching inclined surface to drive the mounting part to be switched from the demolding position to the shaping position; and the number of the first and second groups,
the first elastic piece is connected to the mounting part and the lower die holder, and the first elastic piece resets and drives the mounting part to be switched to a demoulding position from a shaping position.
4. The automobile roof shaping mold of claim 2, further comprising a sliding fit structure, wherein the sliding fit structure comprises a sliding guide surface and a sliding guide block which are in sliding fit with each other, one of the sliding guide surface and the sliding guide block is arranged on the lower mold base, and the other is arranged on the mounting portion.
5. The automotive roof reforming mold defined in claim 2, further comprising a forward and rearward restraining assembly, the forward and rearward restraining assembly comprising:
the limiting matching block is arranged on the front side surface of the mounting part; and the number of the first and second groups,
the limiting block is arranged on the lower die seat corresponding to the limiting matching block and can slide left and right to be provided with a supporting position where the limiting back side surface abuts against the front side surface of the limiting matching block and a abdicating position where the limiting back side surface is separated from the front side surface of the matching block;
wherein, when the installation department is in the plastic position, the stopper is in the support position, and when the installation department is in the drawing of patterns position, the stopper is in the position of stepping down.
6. The automobile roof trimming mold of claim 1, wherein the upper mold further comprises an upper driving seat mounted to the upper mold base and having a forward-backward and a upward-downward moving stroke with respect to the upper mold base, the side pressing blocks are fixedly mounted to the upper driving seat, and the side pressing blocks are movably mounted to the upper driving seat.
7. The automobile roof trimming mold of claim 6, wherein the mounting portion further forms a downwardly inclined guide surface from the rear toward the front;
the upper driving seat is provided with a guide matching part corresponding to the guide surface, and the guide matching part slides along the guide surface.
8. The automobile roof trim mold of claim 6, wherein the side plugs are mounted to the upper driving seat through elastic connectors;
the automobile top cover shaping die further comprises a side pressing block driving assembly, the side pressing block driving assembly comprises an elongated groove and a pushing block, the elongated groove and the pushing block are matched with each other, the elongated groove extends along the moving direction of the upper driving seat, the pushing block can be movably arranged in the elongated groove along the elongated groove, one of the elongated groove and the pushing block is arranged on the side surface of the side pressing block in the left-right direction, and the other one of the elongated groove and the pushing block is correspondingly arranged on the upper driving seat.
9. A method for forming a vehicle roof based on the mold for reforming a vehicle roof according to any one of claims 1 to 8, comprising:
drawing and processing a sheet material into an automobile roof prefabricated part, wherein the automobile roof prefabricated part comprises a formed top section, a tail section to be formed and a fillet connecting section to be formed between the top section and the tail section;
and simultaneously performing positive shaping and side shaping on the automobile roof prefabricated part to form the fillet connecting section and the tail section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110354232.7A CN113083941B (en) | 2021-03-31 | 2021-03-31 | Automobile top cover shaping die and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110354232.7A CN113083941B (en) | 2021-03-31 | 2021-03-31 | Automobile top cover shaping die and forming method thereof |
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| CN113083941A CN113083941A (en) | 2021-07-09 |
| CN113083941B true CN113083941B (en) | 2022-03-08 |
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| CN202110354232.7A Active CN113083941B (en) | 2021-03-31 | 2021-03-31 | Automobile top cover shaping die and forming method thereof |
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| CN117548545B (en) * | 2024-01-12 | 2024-04-02 | 德阳华智精密科技有限公司 | Dovetail groove stamping die |
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| CN105499431A (en) * | 2015-12-21 | 2016-04-20 | 安徽江淮汽车股份有限公司 | Stamping forming process and trimming and shaping composite mould for automobile roof cover |
| CN105880383A (en) * | 2016-04-27 | 2016-08-24 | 富士瑞鹄技研（芜湖）有限公司 | Mold structure for achieving top cover tail portion primary shaping and front shaping and side shaping method of mold structure |
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| CN110976649A (en) * | 2019-12-20 | 2020-04-10 | 奇瑞汽车股份有限公司 | Three railway carriage or compartment vapour car roof afterbody turn-ups plastic mould |
| CN211614049U (en) * | 2019-12-24 | 2020-10-02 | 安徽江淮福臻车体装备有限公司 | Tail side adjusting mechanism of automobile top cover stamping die |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10590652B2 (en) * | 2017-03-14 | 2020-03-17 | James Hardie Technology Limited | Drip edge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499431A (en) * | 2015-12-21 | 2016-04-20 | 安徽江淮汽车股份有限公司 | Stamping forming process and trimming and shaping composite mould for automobile roof cover |
| CN105880383A (en) * | 2016-04-27 | 2016-08-24 | 富士瑞鹄技研（芜湖）有限公司 | Mold structure for achieving top cover tail portion primary shaping and front shaping and side shaping method of mold structure |
| CN208162493U (en) * | 2018-05-02 | 2018-11-30 | 上海实树汽车工程技术有限公司 | A kind of interspersed binder side apparatus for shaping of interaction |
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| CN113083941A (en) | 2021-07-09 |
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