An automobile seat backrest side plate blanking and drawing die and a die machining method thereof

Abstract

The application discloses a material blanking and drawing die for a backrest side plate of an automobile seat and a die machining method thereof, and relates to the technical field of automobile seat manufacturing. The material blanking die comprises a lower die block and an upper die plate. The corresponding protrusions on the lower die block and the matching concave die on the upper die plate are oppositely matched to stamp out a material sheet. The matching concave die is outwardly protruded on one side edge, and the other side edge is concave-convex. The material sheet is bent by the drawing die. The drawing die is provided with strip-shaped protrusions in the lower concave die. The upper protrusion block of the drawing die is correspondingly matched with the material sheet to be embedded in the lower concave die, and the middle part of the material sheet is pressed and attached to the surface of the strip-shaped protrusions. The application provides a material blanking and drawing die for a backrest side plate of an automobile seat and a die machining method thereof. The material sheet with a concave-convex edge is machined by the material blanking die, and then the protruding edge of the material sheet is embedded in the lower concave die by the drawing die to be formed, so that the machining misalignment phenomenon of the material sheet during the drawing machining is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile seat backrest edge plate blanking and drawing die. BACKGROUND

[0002] Automobiles play an important role in people's daily life, and automobile seats can provide safety and comfort for people; usually, a die is used to process and produce automobile seat backrest edge plates, and the existing processing die is prone to misalignment during subsequent processing of the processed sheet after blanking, which can cause the processed backrest edge plate to be difficult to install. SUMMARY

[0003] The present application provides an automobile seat backrest edge plate blanking and drawing die and a die processing method thereof, which overcomes the shortcomings of the prior art. The die processes a sheet with a concave-convex edge, then the drawing die forms a concave-convex edge of the sheet by embedding it into a drawing lower die, and a strip-shaped protrusion can be simultaneously drawn in the middle of the sheet to avoid misalignment during drawing.

[0004] Technical solution: To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0005] An automobile seat backrest edge plate blanking and drawing die, comprising a blanking die and a drawing die, the blanking die comprising a blanking lower die block and a blanking upper die plate; corresponding protrusions on the blanking lower die block and matching concave dies on the blanking upper die plate are adapted to cooperate to stamp out a sheet, and one side edge of the matching concave die is convex, and the other side edge is concave-convex; the sheet is bent by stamping through the drawing die; a strip-shaped protrusion is provided in the drawing lower die of the drawing die; the upper protrusion block of the drawing die corresponds to the stamping of the sheet embedded in the drawing lower die, and the middle part of the sheet is pressed against the surface of the strip-shaped protrusion.

[0006] Further, the blanking lower die block is provided on the blanking lower fixed plate through the blanking lower cushion plate; corresponding protrusions are provided in the middle length direction of the blanking lower die block, one end of the corresponding protrusions is inclined to one corner direction of the blanking lower die block as an inclined end, and the width of the inclined end gradually decreases; the edge of the other end of the corresponding protrusions is arc-shaped as a curved end, and the side edge between the inclined direction of the inclined end and the curved end is concave-convex as a concave-convex side edge; the concave-convex side edge comprises a first notch and a second protrusion; the first notch is provided close to the inclined end, and the second protrusion is connected with the first notch.

[0007] Further, the second protrusion and the arc-shaped end are provided with a notch, and a line connecting the first notch, the second protrusion and the notch is a fold line; one side of the inclined end and the arc-shaped end are a curved side, the curved side is arranged opposite to the concave-convex side, the curved side is outwardly convex near one end of the arc-shaped end, and the outward convexity is arranged opposite to the notch.

[0008] Further, edges of a matching groove on the blanking upper die plate are arranged opposite to the concave-convex side and the curved side; a top post is arranged in the matching die; the blanking upper die plate is arranged on a blanking upper fixed plate block through a rectangular spring; guide sleeves and limiting column bodies are arranged on both ends of the blanking upper fixed plate block, a plurality of guide sleeves are arranged on both sides of the limiting column bodies, and a plurality of guide sleeves and limiting column bodies are arranged on both ends of the blanking upper die plate; guide columns corresponding to the guide sleeves are arranged on a blanking lower fixed plate, and limiting column bodies on the blanking lower fixed plate are arranged corresponding to the limiting column bodies on the blanking upper die plate.

[0009] Further, the drawing lower die is arranged on a drawing lower plate block through a rectangular spring; a drawing corresponding groove is arranged in the middle of the drawing lower die, one end of the drawing corresponding groove gradually decreases to an opening end, and the other end of the drawing corresponding groove is bent to be a twisted end; a strip-shaped protrusion is arranged to adapt to the trajectories of the opening end and the twisted end, and the strip-shaped protrusion is arranged at a distance from the inner walls of the opening end and the twisted end.

[0010] Further, one end of the opening end is arranged to be open, and the strip-shaped protrusion is arranged at a distance from the opening of the opening end; one end of the strip-shaped protrusion gradually decreases in height to be a collapsed end, and the collapsed end is arranged corresponding to the position of the opening end; the other end of the strip-shaped protrusion is a parallel end, and the parallel end is arranged corresponding to the position of the twisted end; the collapsed end and the parallel end are connected as a whole; a plurality of grooves are arranged on the collapsed end and the parallel end, and the openings of the plurality of grooves gradually increase; the plurality of grooves are arranged staggered with each other; the grooves are arranged to penetrate the drawing lower plate block; a top rod is arranged at the bottom of the strip-shaped protrusion, a driving device is drivingly connected to the bottom end of the top rod penetrating the drawing lower plate block; and the concave-convex surface of the upper protrusion block is arranged to adapt to the drawing corresponding groove and the strip-shaped protrusion.

[0011] Further, a lower notch is arranged at the connection between the collapsed end and the parallel end, one end of the lower notch is arranged to be gradually recessed towards the collapsed end; a first notch is arranged on the collapsed end, the first notch is arranged close to the lower notch, and the width of one end of the first notch away from the lower notch gradually decreases; and the edge of the first notch is arranged to be gradually recessed inward.

[0012] Further, a convex edge is arranged at the edge of the lower notch, one end of the convex edge is provided with a gradually convex port, and the opening of the gradually convex port gradually increases towards the parallel end; a plurality of matching holes are arranged on the parallel end, and the plurality of matching holes are arranged staggered with the grooves.

[0013] Furthermore, the mold processing method is as follows:

[0014] Step 1: The corresponding protrusions of the blanking die and the mating die cooperate to stamp out a sheet of material with uneven edges.

[0015] Step 2: The edge of one side of the stamped sheet with the concave and convex sides is concave and convex, and the edge of the other side of the stamped sheet with the curved sides is arc-shaped;

[0016] Step 3: After being punched by the blanking die, the sheet is placed on the corresponding deep drawing groove. Then, the upper convex module cooperates with the sheet to press it. The corresponding position of the strip-shaped convex block protrudes upward, and the edge of the sheet is embedded downward into the edge of the corresponding deep drawing groove, so that the middle part of the sheet can be deep drawn.

[0017] Beneficial effects: The corresponding protrusions on the blanking lower die of the present invention cooperate with the mating die on the blanking upper die to extrude the sheet material, which can punch the sheet material to form the required sheet shape. The punched sheet material is then deep-drawn by the deep-drawing die. During the deep-drawing process, the sheet material is first placed on the deep-drawing lower die, and then the upper die moves relative to the sheet material to extrude it, causing the sheet material to fit into the deep-drawing lower die. At the same time, the middle part of the sheet material corresponds to the position of the strip-shaped protrusion, and the middle part of the sheet material bulges upward, while the edge of the sheet material bends downward, thereby drawing the sheet material into a groove-shaped structure, which facilitates the forming of the sheet material. The blanking die processes the sheet material first, and the shape of the sheet material conforms to the deep-drawing shape of the deep-drawing die. After deep drawing, it can be quickly pre-formed, reducing the need for multi-step and multi-position deep-drawing processing, avoiding differences between the forming positions of the pre-formed sheet material, and avoiding problems of difficult matching and installation after processing. Attached Figure Description

[0018] Appendix Figure 1 This is a structural diagram of the blanking template;

[0019] Appendix Figure 2 This is a structural diagram of the blanking template;

[0020] Appendix Figure 3 Here is a structural diagram of the blanking die;

[0021] Appendix Figure 4 The corresponding convex block structure diagram;

[0022] Appendix Figure 5 To match the die structure diagram;

[0023] Appendix Figure 6 This is a diagram of a strip-shaped bump structure;

[0024] Appendix Figure 7 This is a structural diagram of the convex upper module;

[0025] Appendix Figure 8 This is a structural diagram of a deep drawing die. DETAILED DESCRIPTION

[0026] The application will be further described below with reference to the drawings.

[0027] As shown in the drawings Figures 1-8 The automobile seat backrest edge plate blanking and drawing die comprises a blanking die 1 and a drawing die 4, the blanking die 1 comprises a blanking lower die block 2 and a blanking upper die plate 3; corresponding protrusions 21 on the blanking lower die block 2 and matching recesses 31 on the blanking upper die plate 3 are adapted to cooperate to stamp out a blank 7, and one side edge of the matching recess 31 is outwardly protruding, and the other side edge of the matching recess 31 is recessed and protruding; the blank 7 is bent by the drawing die 4; a strip-shaped protrusion 51 is arranged in a drawing lower recess 5 of the drawing die 4; a drawing upper die block 6 of the drawing die 4 is embedded in the drawing lower recess 5 corresponding to the blank 7, and the middle part of the blank 7 is pressed and attached to the surface of the strip-shaped protrusion 51. The corresponding protrusions on the blanking lower die block are adapted to cooperate with the matching recesses on the blanking upper die plate to extrude the sheet material, so that the sheet material can be punched, and the required shape of the blank is formed after punching. The punched blank is subjected to drawing processing by the drawing die. During the drawing processing, the blank is first arranged on the drawing lower recess, and then the drawing upper die block moves relatively to extrude the blank, so that the blank is embedded in the drawing lower recess, and the middle part of the blank corresponds to the position of the strip-shaped protrusion, and then the middle part of the blank protrudes upward, and the edge of the blank is bent downward, so that the blank can be drawn into a groove-shaped structure, and the blank is conveniently formed. The blank is first processed by the blanking die, and the shape of the blank conforms to the drawing shape of the drawing die. After drawing, the blank can be quickly preformed, the drawing processing in multiple steps and positions is reduced, differences between the forming positions of the preformed blank are avoided, and the problem of difficult installation after processing is avoided.

[0028] The blanking lower die block 2 is arranged on a blanking lower fixing plate 25 through a blanking lower gasket 24; corresponding protrusions 21 are arranged in the middle part of the length direction of the blanking lower die block 2, one end of the corresponding protrusions 21 is inclined to one corner direction of the blanking lower die block 2 as an inclined end 211, and the width of the inclined end 211 gradually decreases; the edge of the other end of the corresponding protrusions 21 is arc-shaped as a curved end 212, and the side between the inclined direction of the inclined end 211 and the curved end 212 is recessed and protruding as a recessed and protruding side 22; the recessed and protruding side 22 comprises a first recess 221 and a second protrusion 222; the first recess 221 is arranged close to the inclined end 211, and the second protrusion 222 is connected with the first recess 221. One end of the corresponding protrusion is inclined, and the other end is a curved end, and the recessed and protruding side is divided into a first recess and a second protrusion, so that the edge of the processed blank is recessed and protruding, and the subsequent drawing processing is facilitated.

[0029] The notch 223 is arranged between the second protrusion 222 and the arc-shaped end 212, and the connection line of the first notch, the second protrusion 222 and the notch 223 is a fold line; the curved side 23 is arranged between one side of the inclined end 211 and the arc-shaped end 212, and the curved side 23 is arranged opposite to the concave-convex side 22; the outer convex 231 is arranged at one end of the curved side 23 close to the arc-shaped end 212, and the outer convex 231 is arranged opposite to the notch 223. One end of the corresponding protrusion is arranged at the concave-convex side, and the other end is arranged at the curved side. After processing, one side of the edge of the material sheet is concave-convex, and the other side is curved, which facilitates subsequent direct deep drawing processing, reduces the processing steps of the multiple sides of the material sheet, and avoids the misalignment of the edge of the material sheet caused by multiple step distribution processing.

[0030] The edge of the matching groove 31 on the blanking upper die plate 3 is arranged opposite to the concave-convex side 22 and the curved side 23; the matching groove 31 is provided with a top column; the blanking upper die plate 3 is arranged on the blanking upper fixed plate block 32 through a rectangular spring; the guide sleeve 33 and the limiting column body 34 are arranged at both ends of the blanking upper fixed plate block 32, and multiple guide sleeves 33 are arranged on both sides of the limiting column body 34; the guide column 331 corresponding to the guide sleeve 33 is arranged on the blanking lower fixed plate 25, and the limiting column body 34 on the blanking lower fixed plate 25 is arranged opposite to the limiting column body 34 on the blanking upper die plate 3. When the blanking upper die plate and the blanking lower die plate are relatively matched, the guide column and the guide sleeve are matched, which can play a guiding role and avoid the misalignment of the punched material sheet; meanwhile, the limiting column bodies arranged above and below can be relatively contacted, which can avoid the excessive extrusion of the blanking upper die plate and the blanking lower die plate to the surface of the material sheet.

[0031] The deep drawing lower die 5 is arranged on the deep drawing lower plate 52 through a rectangular spring; the deep drawing corresponding groove 53 is arranged in the middle of the deep drawing lower die 5, one end of the deep drawing corresponding groove 53 gradually decreases to the opening end 531, and the other end of the deep drawing corresponding groove 53 is bent to the twisted end 532; the strip-shaped protrusion 51 is arranged along the track of the opening end 531 and the twisted end 532, and the strip-shaped protrusion 51 is arranged at a distance from the inner wall of the opening end 531 and the twisted end 532; the edge of the material sheet can be embedded in the deep drawing lower die, and the edge of the material sheet can be quickly formed, and the strip-shaped protrusion arranged in the middle of the deep drawing lower die can correspondingly perform deep drawing processing on the middle of the material sheet, so as to promote the pre-forming of the material sheet.

[0032] The open end 531 is reduced and open, the strip-shaped protrusion 51 is arranged at a distance from the open end 531, one end of the strip-shaped protrusion 51 gradually decreases in height to form a collapsed end 511, the collapsed end 511 is arranged at the position corresponding to the open end 531, the other end of the strip-shaped protrusion 51 is a parallel end 512, the parallel end 512 is arranged at the position corresponding to the twisted end 532, the collapsed end 511 and the parallel end 512 are connected as a whole, a plurality of grooves 513 are formed in the collapsed end 511 and the parallel end 512, the openings of the plurality of grooves 513 gradually increase, the plurality of grooves 513 are arranged staggered, the grooves 513 are penetrated by a deep-drawn lower plate 52, a top rod 514 is arranged at the bottom of the strip-shaped protrusion 51, a driving device is drivingly connected to the bottom end of the top rod 514 penetrating the deep-drawn lower plate 52, and the concave-convex surface of the upper protrusion module 6 is adapted to the deep-drawn corresponding groove 53 and the strip-shaped protrusion 51. The parallel end and the collapsed end of the strip-shaped protrusion can quickly form the two ends of the deep-drawn sheet, and the top rod is arranged at the bottom of the strip-shaped protrusion, which can adjust the height of the strip-shaped protrusion through the top rod, thereby adjusting the deep-drawing height.

[0033] The connection between the collapsed end 511 and the parallel end 512 is provided with a lower groove 515, one end of the lower groove 515 is gradually recessed towards the collapsed end 511, a first groove 516 is formed in the collapsed end 511, the first groove 516 is arranged close to the lower groove 515, the width of the first groove 516 gradually decreases away from the lower groove 515, and the edge of the first groove 516 is gradually recessed. The edge of the lower groove 515 is provided with a raised edge 517, one end of the raised edge 517 is provided with a gradually convex mouth 518, the opening of the gradually convex mouth 518 gradually increases in the direction of the parallel end 512, a plurality of matching holes 519 are formed in the parallel end 512, and the plurality of matching holes 519 are arranged staggered with the grooves 513. The parts of the sheet corresponding to the first groove, the lower groove, and the gradually convex mouth can be correspondingly extruded and formed, and then punched and deep-drawn, so that corresponding concave-convex shapes can be machined on multiple positions of the sheet, thereby improving the machining efficiency.

[0034] The mold machining method is as follows:

[0035] First step: the corresponding protrusion 21 of the blanking die 1 and the matching recess die 31 are relatively matched to punch out a sheet 7 with an edge concave-convex shape; the edge of the machined sheet is concave-convex, so that corresponding shapes can be punched out at the edge position of the sheet during subsequent processing, thereby facilitating subsequent deep-drawing processing.

[0036] Second step: the edge of one side of the blank 7 stamped by the concave-convex side 22 is concave-convex, and the edge of the other side of the blank 7 stamped by the curved side 23 is arc-shaped; the edge of one side of the processed blank is concave-convex, and the edge of the other side is arc-shaped, so that corresponding shapes can be stamped on corresponding positions during deep drawing processing, and rapid preforming can be realized.

[0037] Third step: the blank cut by the blanking die 1 is arranged on the deep drawing corresponding groove 53, then the upper punch module 6 is relatively matched to stamp the blank 7, the strip-shaped convex block 51 is upwardly convex at the corresponding position, and the edge of the blank 7 is correspondingly embedded into the edge of the deep drawing corresponding groove 53, so that the middle part of the blank 7 can be subjected to deep drawing processing; during deep drawing processing of the blank, the edge of the blank is embedded into the deep drawing lower concave die, and the strip-shaped convex block can correspondingly perform deep drawing processing on the middle part of the blank, and the height of the strip-shaped convex block can be adjusted by the ejector rod, so that the deep drawing depth can be adjusted.

[0038] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and those skilled in the art can make several improvements and changes without departing from the above principles of the present application, and these improvements and changes are also considered to be within the protection scope of the present application.

Claims

1. A blanking and deep drawing die for automotive seat back panel side panels, characterized in that: The die includes a blanking die (1) and a drawing die (4). The blanking die (1) includes a blanking lower module (2) and a blanking upper template (3). The corresponding protrusion (21) on the blanking lower module (2) and the mating die (31) on the blanking upper template (3) are adapted to fit and stamp the sheet (7). The mating die (31) has one side edge protruding outward and the other side edge protruding and concave. The sheet (7) is stamped and bent by the drawing die (4). The drawing lower die (5) of the drawing die (4) is provided with a strip-shaped protrusion (51). The upper protrusion module (6) of the drawing die (4) is embedded in the drawing lower die (5) to press the sheet (7). The middle part of the sheet (7) is pressed against the surface of the strip-shaped protrusion (51). The material unloading module (2) is mounted on the material unloading fixing plate (25) via the material unloading pad (24); a corresponding protrusion (21) is provided in the middle length direction of the material unloading module (2), one end of the corresponding protrusion (21) is inclined towards one corner of the material unloading module (2) as an inclined end (211), and the width of the inclined end (211) is gradually reduced; the edge of the other end of the corresponding protrusion (21) is arc-shaped as a curved end (212), and the side of the inclined end (211) and the curved end (212) is concave and convex as a concave and convex side (22); the concave and convex side (22) includes a first notch (221) and a second protrusion (222); the first notch (221) is located near the inclined end (211), and the second protrusion (222) is connected to the first notch (221); A slot (223) is provided between the second protrusion (222) and the curved end (212), and the line connecting the first recess, the second protrusion (222) and the slot (223) is a broken line; one side of the inclined end (211) and the curved end (212) is a curved side (23), the curved side (23) is arranged opposite to the concave and convex side (22), the curved side (23) protrudes outward (231) near the curved end (212), and the protrusion (231) is positioned relative to the slot (223); The edge of the mating die (31) on the upper blanking template (3) is adapted to the concave and convex side (22) and curved side (23); a top post is provided inside the mating die (31); the upper blanking template (3) is set on the upper blanking fixing plate (32) by a rectangular spring; guide sleeves (33) and limiting posts (34) are provided on both ends of the upper blanking fixing plate (32), multiple guide sleeves (33) are located on both sides of the limiting posts (34), and multiple guide sleeves (33) and limiting posts (34) are located at both ends of the upper blanking template (3); a guide post (331) corresponding to the guide sleeve (33) is provided on the lower blanking fixing plate (25), and the limiting posts (34) on the lower blanking fixing plate (25) are corresponding to the limiting posts (34) at both ends of the upper blanking template (3); The drawing die (5) is mounted on the drawing plate (52) by a rectangular spring; a drawing corresponding groove (53) is provided in the middle of the drawing die (5), one end of the drawing corresponding groove (53) gradually decreases to an open end (531), and the other end of the drawing corresponding groove (53) is bent to a twisted end (532); the strip-shaped protrusion (51) is adapted to the trajectory of the open end (531) and the twisted end (532), and the distance between the strip-shaped protrusion (51) and the inner wall of the open end (531) and the twisted end (532) is set; The opening end (531) is open at one end, and the distance between the strip-shaped protrusion (51) and the opening end (531) is set; one end of the strip-shaped protrusion (51) gradually decreases in height to become a collapsed end (511), and the collapsed end (511) is set at the position corresponding to the opening end (531); the other end of the strip-shaped protrusion (51) is a parallel end (512), and the parallel end (512) is set at the position corresponding to the twisted end (532); the collapsed end (511) and the parallel end (512) are connected as one piece; the collapsed end (511) 11) A plurality of slots (513) are provided on the parallel end (512), the openings of the plurality of slots (513) gradually increase; the plurality of slots (513) are staggered from each other; the bottom of the slots (513) penetrates the lower drawing plate (52); the bottom of the strip-shaped protrusion (51) is provided with a top rod (514), and the driving device is driven to the bottom end of the top rod (514) penetrating the lower drawing plate (52); the concave and convex surfaces of the upper protrusion module (6) are adapted to the drawing corresponding slots (53) and the strip-shaped protrusion (51).

2. The blanking and deep drawing die for an automotive seat back panel as described in claim 1, characterized in that: A recessed groove (515) is provided at the connection between the collapsed end (511) and the parallel end (512). One end of the recessed groove (515) is gradually recessed towards the collapsed end (511). A first groove (516) is provided on the collapsed end (511). The first groove (516) is located close to the recessed groove (515). The width of the first groove (516) gradually decreases at the end away from the recessed groove (515). The edge of the first groove (516) is gradually recessed.

3. The blanking and deep drawing die for an automotive seat back panel as described in claim 2, characterized in that: The lower groove opening (515) has a raised edge (517) at its edge, and a gradually convex opening (518) is provided at one end of the raised edge (517). The opening of the gradually convex opening (518) gradually increases towards the parallel end (512). A plurality of mating holes (519) are provided on the parallel end (512), and the plurality of mating holes (519) are staggered with the groove opening (513).

4. The die processing method for a blanking and deep drawing die for an automotive seat back panel as described in claim 3, characterized in that, The mold processing method is as follows: Step 1: The corresponding protrusion (21) of the blanking die (1) and the mating die (31) cooperate to stamp out a piece of material (7) with concave and convex edges. Step 2: The edge of one side of the sheet (7) stamped by the concave-convex side (22) is concave-convex, and the edge of the other side of the sheet (7) stamped by the curved side (23) is arc-shaped; Step 3: After being punched by the blanking die (1), the sheet is placed on the deep drawing groove (53). Then, the upper convex module (6) is used to press the sheet (7). The corresponding position of the strip-shaped convex block (51) is raised upward, and the edge of the sheet (7) is embedded downward into the edge of the deep drawing groove (53), so that the middle part of the sheet (7) can be deep drawn.

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