CN112170697A

CN112170697A - Eight-way forward rolling bracket punch forming die for automobile

Info

Publication number: CN112170697A
Application number: CN202011029887.9A
Authority: CN
Inventors: 吴煦东; 陈刚
Original assignee: Changsha Jinbaili Auto Parts Co ltd
Current assignee: Changsha Jinbaili Auto Parts Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-05
Anticipated expiration: 2040-09-27
Also published as: CN112170697B

Abstract

A punch forming die for an eight-way forward-connected rolling support of an automobile is characterized in that a lower die assembly comprises a first guide pillar (4), a floating guide pin (5), an inner guide sleeve (6), a first punching fixed die (7), a pre-punching fixed die (8), a primary cutting fixed die (9), a secondary cutting fixed die (10), a bending fixed die (11), a side forming die (12), a side punching die (13), a second punching fixed die (14), a cutting fixed die (15), a guide pin column (16), a guide pin hole (49), a lower material returning pin (17) and a material supporting platform (18); the upper die assembly is provided with a material returning spring (33), an inner guide pillar (34), a guide pin (35), a guide sleeve (36), a first upper wedge block (37), a second upper wedge block (38), a pre-punching punch (39), a primary punching punch (40), a primary material cutting punch (41), a secondary material cutting punch (42), a forming punch (43), a secondary punching punch (44), a cutting punch (45) and an upper material returning pin (46).

Description

Eight-way forward rolling bracket punch forming die for automobile

Technical Field

The invention relates to the technical field of automobile parts and processing thereof, in particular to an automobile eight-direction forward-connected rolling support punch forming die.

Background

A car seat is an important component in a car that provides support and safety protection for the occupants. With the increasingly intense competition in the automobile market, the comfort of the seat and the convenience of adjustment become indexes for evaluating the quality of the automobile seat and even the whole automobile. The eight-direction front-connected rolling bracket is one of parts for adjusting the front and rear positions of the automobile seat. The existing eight-forward-connected rolling support machining process needs a plurality of independent dies to respectively machine, and the material block is continuously disassembled and assembled in the machining process, so that the production efficiency of products is seriously influenced, and the machining precision of the products is also influenced.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the punch forming die for the eight-forward rolling bracket of the automobile, which can greatly improve the production efficiency and the product precision.

In order to solve the technical problem, the invention provides an automobile eight-forward-link rolling support punch forming die which comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are continuous dies; the lifting material guide pins are connected with the lower die connecting plate, and at least four lifting material guide pins are symmetrically arranged on two sides of the central axis of the lower die connecting plate; at least four inner guide sleeves respectively connected with the lower die connecting plate; the first punching fixed die is connected with the lower die connecting plate and positioned on the central axis of the lower die connecting plate, and the pre-punching fixed die, the primary blanking fixed die, the secondary blanking fixed die, the bending fixed die, the side forming die, the side punching die, the second punching fixed die and the cutting fixed die are sequentially and symmetrically positioned on two sides of the central axis of the lower die connecting plate; the guide pin holes are connected with the lower die connecting plate, positioned on the central axis of the lower die connecting plate and positioned on two sides of the central axis of the lower die connecting plate; the first lower material returning pin is connected with the lower die base and penetrates through the lower base plate, the lower die connecting plate and the bending fixed die; a second lower material returning pin connected with the lower die base and penetrating through the lower base plate, the lower die connecting plate and the second punching fixed die; the material supporting platform is connected with the lower die connecting plate and is positioned on the central axis of the lower die connecting plate; the side forming die and the side punching die respectively comprise a forming concave table, guide grooves which are positioned at two sides of the forming concave table, a first lower wedge block and a second lower wedge block which are symmetrically positioned at two sides of the forming concave table and are in sliding connection with the guide grooves, a punch which is respectively connected with one sides of the first lower wedge block and the second lower wedge block close to the forming concave table, and a first fixed leaning block and a second fixed leaning block which are connected with the lower backing plate, a first guide rod connected with the first fixed leaning block in a sliding way and with a first end connected with the first lower wedge block, a first return spring positioned between the first fixed leaning block and the other end of the first guide rod and sleeved on the periphery of the first guide rod, the second guide rod is connected with the second fixed backup block in a sliding mode, the first end of the second guide rod is connected with the second lower wedge block, and the second reset spring is located between the second fixed backup block and the other end of the second guide rod and sleeved on the periphery of the second guide rod; the upper die assembly is at least provided with an upper die base, an upper base plate, an upper connecting plate, a reinforcing plate, a material pressing plate, at least four material returning springs, inner guide posts, guide pins, a guide pin hole, a guide sleeve, a first upper wedge block, a second upper wedge block, a pre-punching punch head, a second upper wedge block, a second lower wedge block, a second upper wedge block, a pre-punching punch head and a pre-punching punch head, wherein the upper base plate is positioned below a bottom plate of the upper die base and connected with the upper die base, the upper connecting plate is positioned below the upper base plate of the upper die base, the upper connecting plate is positioned below the upper base plate and connected with the upper base plate, the reinforcing plate is positioned below the upper connecting plate and positioned below the upper connecting plate, the reinforcing plate is positioned below the upper connecting plate and positioned below the upper connecting plate, the upper connecting plate is positioned below, with the upper padding plate connect, and with a punching die matched with drift that punches a hole once, with the upper padding plate connect, and with a first blank drift of blank cover half matched with, with the upper padding plate connect, and with a second blank drift of secondary blank cover half matched with, with the upper padding plate connect, and with a cover half matched with shaping of once bending is dashed, with the upper padding plate connect, and with the second punch drift that punches a hole cover half matched with second, with the upper padding plate connect, and with cut off cover half matched with and cut off the drift, with the last material returned round pin that the reinforcing plate connects.

As an improved technical scheme, the invention provides an automobile eight-way forward-connected rolling bracket punch forming die, wherein a first guide pillar is a ball guide pillar.

As an improved technical scheme, the punch forming die for the eight-direction forward rolling support of the automobile, provided by the invention, is characterized in that a round counter bore is formed in the top end of the guide pin column, the top of the guide pin is conical, and the guide pin is inserted into the round counter bore during punching.

As an improved technical scheme, the eight-direction front rolling support punch forming die for the automobile is characterized in that a blank step is arranged on one side, away from the feeding end, of each of the bending fixed die and the side punching die.

As an improved technical scheme, the stamping forming die for the eight-way forward rolling bracket of the automobile, provided by the invention, is also provided with a feeding protection groove connected with one end of the lower die holder.

The above improvements can be implemented alone or in combination without conflict.

According to the technical scheme provided by the invention, the automatic continuous die is adopted, the matching precision of the die is high, the disassembling and assembling operation of the material block is not required in the processing process, the process step alignment precision of the material block is high, and the production efficiency and the processing precision of the product are greatly improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an eight-forward rolling bracket of an automobile according to an embodiment;

FIG. 2 is a schematic view of a schematic structural principle of a stamping forming die for an eight-forward rolling bracket of an automobile in a front view;

FIG. 3 is a schematic top view of a lower mold assembly according to an embodiment;

FIG. 4 is a schematic bottom view of the upper die assembly of the embodiment;

FIG. 5 is a schematic structural diagram of a side forming die of an automobile eight-forward rolling bracket punch forming die;

FIG. 6 is a schematic diagram of the stamping forming process of the eight forward rolling brackets of the automobile.

Detailed Description

The punch forming die for the eight-forward-link rolling bracket of the automobile shown in fig. 2 to 4 comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are continuous dies. The lower die assembly comprises a lower die base 1; a lower backing plate 2 positioned above the lower die holder 1; a lower die connecting plate 3 positioned above the lower backing plate 2; at least four first guide posts 4 connected to the lower die holder 1; the lifting material guide pins 5 are connected with the lower die connecting plate 3 and are symmetrically arranged on two sides of the central axis of the lower die connecting plate 3; at least four inner guide sleeves 6 respectively connected with the lower die connecting plate 3; the first punching fixed die 7 is connected with the lower die connecting plate 3 and is positioned on the central axis of the lower die connecting plate 3; the pre-punching fixed die 8, the primary blanking fixed die 9, the secondary blanking fixed die 10, the bending fixed die 11, the side forming die 12, the side punching die 13, the second punching fixed die 14 and the cutting fixed die 15 are sequentially and symmetrically positioned on two sides of the central axis of the lower die connecting plate 3; a plurality of guide pin columns 16 which are connected with the lower die connecting plate 3 and are positioned on the central axis of the lower die connecting plate 3, and guide pin holes 49 which are positioned at two sides of the central axis of the lower die connecting plate 3; the first lower material returning pin 17 is connected with the lower die base 1 and penetrates through the lower base plate 2, the lower die connecting plate 3 and the bending fixed die 11; a second lower material returning pin 47 connected with the lower die base 1 and penetrating through the lower backing plate 2, the lower die connecting plate 3 and the second punching fixed die 14; and the material supporting platform 18 is connected with the lower die connecting plate 3 and is positioned on the central axis of the lower die connecting plate 3.

Referring to fig. 5, each of the side forming mold 12 and the side punching mold 13 includes a forming recess 19, guide grooves 50 at both sides of the forming recess 19, first and second

lower wedges

20 and 21 symmetrically located at both sides of the forming recess 19 and slidably connected to the guide grooves 50, a forming punch or a side punching punch respectively connected to one sides of the first and second

lower wedges

20 and 21 near the forming recess 19, first and second fixed backup blocks 22 and 23 connected to the lower pad 3, a first guide rod 24 slidably connected to the first fixed backup block 22 and having a first end connected to the first lower wedge 20, a first return spring 25 located between the other ends of the first fixed backup block 22 and the first guide rod 24 and fitted around the outer periphery of the first guide rod 24, a second guide rod 26 slidably connected to the second fixed backup block 23 and having a first end connected to the second lower wedge 21, and a second guide rod 26 located between the other ends of the second fixed backup block 23 and the second guide rod 26, And a second return spring 27 fitted over the outer periphery of the second guide bar 26.

The upper die assembly at least comprises an upper die base 28, an upper backing plate 29 which is positioned below a bottom plate of the upper die base 28 and connected with the upper die base 28, an upper connecting plate 30 which is positioned below the upper backing plate 29 and connected with the upper backing plate 29, a reinforcing plate 31 which is positioned below the upper connecting plate 30 and can slide up and down, a pressure plate 32 which is positioned below the reinforcing plate 31 and can slide up and down, at least four material returning springs 33 which are respectively connected with the upper die base 28, an inner guide pillar 34 which is matched with the inner guide pillar 6 and connected with the upper backing plate 29, a guide pin 35 which is connected with the reinforcing plate 31 and matched with the guide pin pillar 16 and the guide pin hole 49, a guide sleeve 36 which is arranged on the upper die assembly and matched with the first guide pillar 4, a first upper wedge block 37 and a second upper wedge 38 which are respectively matched with the first lower wedge 15 and the second lower wedge 16, a pre-punching punch 39 which is connected with the upper backing plate 29 and matched with the pre-punching fixed die 8, be connected with the upper padding plate 29 and with a punching die 7 matched with punch 40 once, be connected with the upper padding plate 29 and with a blank cover half 9 matched with first blank drift 41, be connected with the upper padding plate 29 and with secondary blank cover half 10 matched with second blank drift 42, with the upper padding plate 29 is connected, and with bend cover half 11 matched with shaping and dash 43 once, be connected with the upper padding plate 29 and with second cover half 14 matched with second punch drift 44, be connected with the upper padding plate 29 and with cut off cover half 15 matched with and cut off drift 45, the last material returned round pin 46 of being connected with reinforcing plate 31.

As shown in fig. 6, when the eight-forward rolling bracket of the automobile is processed, the external feeding mechanism of the punch forming die of the eight-forward rolling bracket of the automobile feeds the steel plate for processing the eight-forward rolling bracket of the automobile into the feeding protective groove 48, the feeding protective groove 48 plays a guiding role, and after the steel plate passes through the feeding protective groove 48, two sides of the steel plate are clamped into the annular groove of the buoyancy lifting guide pin 5, so that the initial positioning precision of the steel plate is ensured; when the upper die assembly descends for the first time, a first working step operation is carried out, the first punching fixed die 7 punches the guide and guide holes in the middle of the steel plate, the pre-punching fixed die 8 punches the guide and guide holes on two sides so as to be beneficial to the processing of the subsequent working step, the guide and guide holes are matched with the guide pin column 16 and the guide pin 35 in the subsequent working step, and the guide pin 35 penetrates through the guide and guide holes when the upper die descends for the guide of the steel plate in the punching process; when the upper die assembly descends for the second time and the third time, the second working step (primary cutting) and the third working step (secondary cutting) are carried out, part of steel is symmetrically punched on two sides of the central axis of the steel plate, the guide pin column 16 and the guide pin hole 49 are both provided with springs and can float up and down, the top ends of the guide pin column 16 and the guide pin hole 49 are provided with circular counter bores, the top of the guide pin 35 is conical, the guide pin 35 is inserted into the circular counter bores during punching, and the top of the guide pin 35 is conical so as to be conveniently inserted into the guide and guide holes and the circular counter bores; the guide pin column 16 and the guide pin hole 49 are provided with springs which can float up and down, when in punching, the steel plate is in contact with the first punching fixed die 7, the pre-punching fixed die 8, the primary cutting fixed die 9, the secondary cutting fixed die 10, the bending fixed die 11, the side forming die 12, the side punching die 13, the second punching fixed die 14 and the cutting fixed die 15, when the upper die assembly is lifted, the guide pin column 16 and the guide pin hole 49 are matched with the first lower material returning pin 17 and the second lower material returning pin 47 to jack up the steel plate, so that feeding is facilitated. The middle guide and guide hole punched by the first punching fixed die 7 is matched with the guide pin column 16 and the guide pin 35, when the upper die assembly moves downwards, the guide pin 35 penetrates through the guide and guide hole on the central axis and then is inserted into the guide pin column 16 for guide and guide of subsequent steps, the guide and guide holes on two sides punched by the pre-punching fixed die 8 are matched with the guide pin hole 49 and the guide pin 35, when the upper die assembly moves downwards, the guide pin 35 penetrates through the guide and guide holes on two sides and then is inserted into the guide pin hole 49 for guide and guide of initial steel plates and cut materials, and the precision during blanking is provided; when the upper die assembly descends for the fourth time, a fourth working step (forming) operation is carried out, the forming punch 43 moves downwards and is matched with the bending fixed die 11 to bend two sides of the central axis of the steel plate, so that two blank pieces which are symmetrically arranged are arranged on the steel plate; the upper die assembly is idle when going down for the fifth time and the sixth time, so that the problem of insufficient space for arranging the side forming die 12 is solved; when the upper die assembly descends for the seventh time, the seventh working step (side forming) operation is carried out, the first upper wedge block 37 and the second upper wedge block 38 move downwards and impact the first lower wedge block 20 and the second lower wedge block 21, the first lower wedge block 20 and the second lower wedge block 21 push the forming punch to move towards one side of the forming concave table 19, and the two blank pieces which are symmetrically arranged are formed and pressed into the shape required by the product; the upper die assembly is idle when going down for the eighth time, so that the problem of insufficient space for arranging the side punching die 13 is solved; when the upper die assembly descends for the ninth time, a ninth working step (side punching) operation is carried out, the first upper wedge block 37 and the second upper wedge block 38 move downwards and impact the first lower wedge block 20 and the second lower wedge block 21, the first lower wedge block 20 and the second lower wedge block 21 push the side punching punch to move towards one side of the forming concave station 19, and product holes are punched on the side surfaces of two symmetrically-arranged forming blank pieces; when the upper die assembly descends for the tenth time, the tenth step (punching) operation is carried out, the second punching punch 44 is matched with the second punching fixed die 14, and required holes are punched in the two symmetrical formed parts; when the upper die assembly moves upwards, the second lower material returning pin 47 jacks up the steel plate; the upper die assembly is idle when descending for the eleventh time, so that the problem of improving the strength of the cutting fixed die 15 is solved; and when the upper die assembly descends for the twelfth time, the twelfth working step (cutting) operation is carried out, the cutting punch 45 descends and is matched with the cutting fixed die 15, the punched product is cut off from the steel plate to obtain a required finished product, and the two finished products slide out from the two discharge holes respectively. The continuous stamping process of the eight-direction forward rolling support of the automobile is explained according to the process steps, in the machining process, after the upper die assembly ascends and leaves the lower die assembly every time, the feeding mechanism pushes the steel plate for machining the eight-direction forward rolling support of the automobile forward by a process step distance, in the continuous operation process, the first process step to the twelfth process step are carried out simultaneously, and the upper die assembly descends every time to complete the operation of twelve process steps. In the descending process of the upper die assembly, the four first guide columns 4 are in contact fit with the four guide sleeves 36 arranged on the upper die assembly firstly, so that the initial positioning of the upper die assembly and the lower die assembly is completed; then, the inner guide post 34 is inserted into the inner guide sleeve 6 to complete the positioning of the upper and lower die assemblies; the middle guide and guide hole punched by the first punching fixed die 7 is matched with the guide pin column 16 and the guide pin 35, when the upper die assembly moves downwards, the guide pin 35 penetrates through the guide and guide hole on the central axis and then is inserted into the guide pin column 16 for guiding and guiding in subsequent working steps, the two sides guide and guide hole punched by the pre-punching fixed die 8 are matched with the guide pin hole 49 and the guide pin 35, when the upper die assembly moves downwards, the guide pin 35 penetrates through the two sides guide and guide hole and then is inserted into the guide pin hole 49 for guiding and guiding initial steel plates and cut materials, the precision in blanking is improved, the alignment of the working step position of the steel plates and the fixation of the steel plate position in processing are ensured, and the material returning spring 33 is added for extruding the steel plates so that the steel plates are tightly attached to the die.

In other embodiments, the first guide post 4 is a ball guide post.

The present invention is not limited to the above preferred embodiments, and various changes and modifications can be made within the spirit of the present invention defined by the claims and the description, so that the same technical problems can be solved and the intended technical effects can be obtained, and thus, they are not repeated. All solutions which can be directly or indirectly derived from the disclosure of the present invention by a person skilled in the art are within the spirit of the present invention as defined by the appended claims.

Claims

1. The punch forming die for the eight-forward-connected rolling support of the automobile comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are continuous dies, the lower die assembly comprises a lower die base (1), a lower backing plate (2) positioned above the lower die base (1), a lower die connecting plate (3) positioned above the lower backing plate (2), and at least four first guide columns (4) connected to the lower die base (1); the method is characterized in that: the lifting guide pins (5) are connected with the lower die connecting plate (3) and are symmetrically arranged on two sides of the central axis of the lower die connecting plate (3); at least four inner guide sleeves (6) respectively connected with the lower die connecting plate (3); the first punching fixed die (7) is connected with the lower die connecting plate (3) and positioned on the central axis of the lower die connecting plate (3), and the pre-punching fixed die (8), the primary blanking fixed die (9), the secondary blanking fixed die (10), the bending fixed die (11), the side forming die (12), the side punching die (13), the second punching fixed die (14) and the cutting fixed die (15) are sequentially and symmetrically positioned on two sides of the central axis of the lower die connecting plate (3); a plurality of guide pin columns (16) which are connected with the lower die connecting plate (3) and are positioned on the central axis of the lower die connecting plate (3), and guide pin holes (49) which are positioned on two sides of the central axis of the lower die connecting plate (3); a first lower material returning pin (17) which is connected with the lower die base (1) and penetrates through the lower backing plate (2), the lower die connecting plate (3) and the bending fixed die (11); a second lower material returning pin (47) which is connected with the lower die base (1) and penetrates through the lower backing plate (2), the lower die connecting plate (3) and the second punching fixed die (14); the material supporting platform (18) is connected with the lower die connecting plate (3) and is positioned on the central axis of the lower die connecting plate (3); the side forming die (12) and the side punching die (13) respectively comprise a forming concave table (19), guide grooves (50) which are positioned on two sides of the forming concave table (19), first lower wedges (20) and second lower wedges (21) which are symmetrically positioned on two sides of the forming concave table (19) and are in sliding connection with the guide grooves (50), punches which are respectively connected with one sides of the first lower wedges (20) and the second lower wedges (21) close to the forming concave table (19), first fixed leaning blocks (22) and second fixed leaning blocks (23) which are connected with the lower backing plate (3), first guide rods (24) which are in sliding connection with the first fixed leaning blocks (22) and are connected with the first lower wedges (20), first return springs (25) which are positioned between the other ends of the first fixed leaning blocks (22) and the first guide rods (24) and are sleeved on the periphery of the first guide rods (24), and second fixed leaning blocks (23) which are in sliding connection with the second fixed leaning blocks (22), A second guide rod (26) with a first end connected with the second lower wedge block (21), and a second return spring (27) which is positioned between the second fixed leaning block (23) and the other end of the second guide rod (26) and is sleeved on the periphery of the second guide rod (26); the upper die assembly at least comprises an upper die holder (28), an upper backing plate (29) which is positioned below a bottom plate of the upper die holder (28) and connected with the upper die holder (28), an upper connecting plate (30) which is positioned below the upper backing plate (29) and connected with the upper backing plate (29), a reinforcing plate (31) which is positioned below the upper connecting plate (30) and can slide up and down, a material pressing plate (32) which is positioned below the reinforcing plate (31) and can slide up and down, at least four material returning springs (33) which are respectively connected with the upper die holder (28), an inner guide post (34) which is matched with the inner guide sleeve (6) and connected with the upper backing plate (29), a guide pin (35) which is connected with the reinforcing plate (31) and matched with a guide pin post (16) and a guide pin hole (49), and a guide sleeve (36) which is arranged on the upper die assembly and matched with a first guide post (4), with the upper padding plate (29) connect, respectively with first lower voussoir (15) and second lower voussoir (16) matched with first upper wedge (37) and second upper wedge (38), with the upper padding plate (29) connect, and with punch head (39) in advance of punching a hole cover half (8) matched with, with upper padding plate (29) connect, and with a punching die (7) matched with punch head (40) once, with upper padding plate (29) connect, and with a blank cover half (9) matched with first blank punch head (41) once, with upper padding plate (29) connect, and with second blank cover half (10) matched with second blank punch head (42), with upper padding plate (29) connect, and with a bending punch cover half (11) matched with shaping drift (43), with upper padding plate (29) connect, a, And a second punching punch (44) matched with the second punching fixed die (14), a cutting punch (45) connected with the upper backing plate (29) and matched with the cutting fixed die (15), and an upper material returning pin (46) connected with the reinforcing plate (31).

2. The eight-forward-link rolling bracket punch forming die for the automobile according to claim 1, characterized in that: the first guide post (4) is a ball guide post.

3. The eight-forward-link rolling bracket punch forming die for the automobile according to claim 1, characterized in that: the top end of the guide pin column (16) is provided with a circular counter bore, the top of the guide pin (35) is conical, and the guide pin (35) is inserted into the circular counter bore during stamping.

4. The eight-forward-link rolling bracket punch forming die for the automobile according to claim 1, characterized in that: and idle steps are arranged on one sides, far away from the feeding end, of the bending fixed die (11) and the side punching die (13).

5. The eight-forward-link rolling bracket punch forming die for the automobile according to claim 1, characterized in that: and a feeding protection groove (48) connected with one end of the lower die holder (1).