CN117046985B

CN117046985B - Stamping die

Info

Publication number: CN117046985B
Application number: CN202311315696.2A
Authority: CN
Inventors: 刘平; 边德龙; 邹永超; 徐志强
Original assignee: Chengdu Yuyuan Aviation Intelligent Manufacturing Co ltd
Current assignee: Chengdu Yuyuan Aviation Intelligent Manufacturing Co ltd
Priority date: 2023-10-12
Filing date: 2023-10-12
Publication date: 2024-01-05
Anticipated expiration: 2043-10-12
Also published as: CN117046985A

Abstract

The invention provides a stamping die, and relates to the technical field of stamping. The part for processing comprises a plate body provided with a first strip hole, wherein one side of the plate body is provided with a first bending part which is bent upwards, the first bending part is provided with a through hole, and the side parts of the plate body at two sides of the first bending part are provided with second bending parts which are bent downwards; the stamping die comprises a lower die body and an upper die body, wherein a material channel exists between the lower die body and the upper die body, a die assembly is arranged on the lower die body, and comprises a plate groove, a through hole groove, a first strip hole groove, a cutting groove, a bending groove, a forming block, a round hole groove, a waste groove and a plurality of round hole positioning grooves; the upper die body is provided with a cutter assembly, and the cutter assembly comprises a bending cutter and a plurality of blanking cutters, wherein the bending cutter is positioned corresponding to bending grooves in the die assembly, and the blanking cutters are positioned corresponding to other grooves and holes in the die assembly. The invention can improve the working efficiency and avoid the positioning error of materials in different stamping steps.

Description

Stamping die

Technical Field

The invention relates to the technical field of stamping, in particular to a stamping die.

Background

Stamping is a press working method in which a material is pressed at room temperature by a die attached to a press to be separated or plastically deformed, thereby obtaining a desired part. The method belongs to cold stamping processing, and the used die is special technological equipment for processing materials (metal or nonmetal) into parts (or semi-finished products), and is called cold stamping die (commonly called cold stamping die).

At present, when sheet metal parts shown in fig. 1 and 2 are processed, a stamping die is adopted for one-step forming to form a sheet metal product, and the forming mode is easy to deform the sheet metal product and the sheet metal product is easy to deform when stored in a later period; the mode of manually stamping in multiple steps to form the sheet metal product is adopted, so that the working efficiency is low, and because of more stamping steps and operation errors in different stamping steps due to manual operation, errors in positioning of the sheet metal part in different stamping steps are caused, and the quality of the sheet metal part is affected.

Disclosure of Invention

The invention aims to develop a stamping die which improves the operation efficiency and can avoid material positioning errors in different stamping steps.

The invention is realized by the following technical scheme:

a stamping die for processing the part, the part includes the plate body, has seted up first rectangular hole on the plate body, and plate body one side has the first kink of upwards buckling, has seted up the through-hole on the first kink, and the plate body lateral part of first kink both sides has the second kink of buckling downwards, and stamping die includes:

a material channel is arranged between the lower die body and the upper die body, the material channel is divided into a waste channel and two forming channels symmetrically positioned at two sides of the waste channel in the direction perpendicular to the material travelling direction, and each forming channel is sequentially divided into a first forming area, a second forming area, a third forming area, a fourth forming area, a fifth forming area, a sixth forming area and a seventh forming area in the conveying direction of the sheet metal sheet;

the mould subassembly is located on the lower die body, includes:

the plate groove is arranged in the first forming area;

the through hole groove is arranged in the second molding area;

the first strip hole groove is arranged in the third forming area;

the cutting groove is arranged between the third forming area and the fourth forming area;

the bending groove is arranged between the fourth forming area and the fifth forming area;

the molding block is arranged in the sixth molding zone;

the round hole groove is arranged on the waste material channel between the two first forming areas;

the waste material groove is arranged on a waste material channel between the two seventh forming areas;

the circular hole positioning grooves are arranged on the waste material channel between the circular hole grooves and the waste material groove;

the cutter assembly is arranged on the upper die body and comprises a bending cutter and a plurality of blanking cutters, wherein the bending cutter is positioned corresponding to bending grooves in the die assembly, and the blanking cutters are positioned corresponding to other grooves and holes in the die assembly;

the feeding mechanism is arranged on the lower die body and is positioned at the starting end of the material channel;

the plate groove is matched with the first bending part of the part, and the corresponding blanking knife cuts out materials along the plate groove to obtain the outline of the first bending part; the position of the through hole groove corresponds to the first bending part, and the corresponding blanking knife punches down along the through hole groove to obtain a through hole on the first bending part; the position of the first strip hole groove corresponds to the first strip hole, and the corresponding blanking knife punches down along the first strip hole groove to obtain a first strip hole of the part; the shape and the position of the cutoff groove correspond to those of the second bending part, and the corresponding blanking knife is used for obtaining the outline of the second bending part of the parts on two sides in the cutoff groove after being punched along the cutoff groove; the positions of the bending grooves correspond to the second bending parts, and the corresponding bending cutters are punched down along the bending grooves to enable the parts on two sides to be bent downwards at the second bending parts in the bending grooves; the position of the forming block corresponds to the first bending part, and the upper die body presses down the material to enable the first bending part to be bent upwards through the forming block; punching a round hole on the material along the round hole groove by the corresponding punching cutter, enabling the round hole to be positioned at the round hole positioning groove by the material in advance, and enabling the punching cutter above the round hole positioning groove to descend and pass through the round hole to guide, position and fix the material; the corresponding blanking knife is punched down along the waste chute to cut off the materials in the waste chute, so that the two parts which are formed in the two seventh forming areas are disconnected.

Optionally, the die assembly further includes a second elongated slot and a third elongated slot disposed on the waste channel, where the second elongated slot and the third elongated slot are located at edges of two sides of the waste channel respectively; the second strip-shaped hole groove is positioned between the first forming area and the second forming area, and the third strip-shaped hole groove is positioned between the second forming area and the third forming area; the cutter component is matched with the second long-strip hole groove and the third long-strip hole groove respectively, and the second long-strip hole and the third long-strip hole are formed in two edges of the material in the waste material channel respectively.

Optionally, the seventh forming area is provided with a discharge chute, and the discharge chute comprises a guiding-out section and a sliding-out section; the guide-out section is positioned on the lower die body right below the seventh forming area, the setting direction of the guide-out section is perpendicular to the conveying direction of the materials in the material channel, the guide-out section is an inclined plane, one end far away from the waste material channel is a lower end, the guide-out section is provided with a guide block, and the profile of the guide block is matched with the plate body of the part and the two second bending parts; the sliding-out section is arranged along a conveying direction parallel to the material in the material channel, the sliding-out section is arranged on the lower die body below the guiding-out section, and the end part of the sliding-out section, which is arranged in an inclined manner and positioned at the outer side, is a lower end; the parts formed in the seventh forming area fall onto the guide block of the guiding-out section, the plate body of the parts is in sliding contact with the top surface of the guide block, the two second bending parts of the parts are in contact with the two side walls of the guide block, the guide block is used for guiding the parts in a sliding manner on the guiding-out section, and the parts are conveyed to the sliding-out section from the guiding-out section and finally output from the sliding-out section to the die.

Optionally, be equipped with the material guide post of a plurality of positions and material edge adaptation on the lower die body, be equipped with round guide slot on the vertical setting of material guide post and the outer wall, the width of guide slot in vertical direction and the thickness adaptation of material, the coaxial rotation in material guide post bottom is connected with the spring rod, correspond the position on the lower die body and be equipped with the guiding hole with spring rod sliding connection, be equipped with the elastic component that is connected with the spring rod in the guiding hole.

Optionally, the lower die body includes by lower supreme bolted connection's fixed plate, two boards down, lower bolster down, the mould subassembly is located on the lower bolster.

Optionally, the upper die body sequentially comprises an upper die plate, a tool guide plate, a tool fixing plate, a tool limiting plate, an upper two plates and a movable plate from bottom to top, wherein the upper die plate is connected with the tool guide plate through bolts, the tool fixing plate, the tool limiting plate, the upper two plates and the movable plate are sequentially connected through bolts, and the upper die plate and the tool guide plate which are used as a whole can slide relatively with the tool fixing plate, the tool limiting plate, the upper two plates and the movable plate which are used as a whole; the cutter component is arranged on the cutter fixing plate, and a cutter limiting plate fixedly arranged at the top of the cutter fixing plate is used for assisting in fixing the cutter component; and the upper template and the cutter guide plate are provided with a plurality of guide grooves with positions and outlines corresponding to the bending cutter and the blanking cutters.

Optionally, the upper template is parallel to the lower template, and the upper templates above the sixth molding area and the seventh molding area correspond to the first bending parts of the molding blocks and the parts in shape; when the upper templates of the two sixth forming areas descend, the upper templates descend between the two forming blocks, and the upper templates are matched with the forming blocks so that the first bending parts bend upwards on the side walls of the forming blocks; when the upper templates of the two seventh molding areas descend, the edges of the two sides of the upper templates are contacted with the inner side walls of the first bending parts of the parts in the two seventh molding areas.

Optionally, a guide assembly is arranged between the lower die body and the upper die body, the guide assembly comprises four lower guide sleeves arranged on the lower two plates, a guide outer sleeve is coaxially arranged in the lower guide sleeve in a sliding manner, the guide outer sleeve is connected with the cutter guide plate, a guide inner sleeve is coaxially arranged in the guide outer sleeve in a sliding manner, the guide inner sleeve elastically slides in the guide outer sleeve, and an upper guide sleeve connected with the upper two plates is arranged at the top of the guide inner sleeve; the upper limiting columns and the lower limiting columns corresponding to the four positions are respectively arranged at the bottom of the upper two plates and the top of the lower two plates, and the lower two plates are also provided with four supporting pins corresponding to the cutter guide plates.

Optionally, be equipped with a plurality of buffer columns between two boards and the cutter deflector, the buffer column is including the sealed tube of vertical locating cutter deflector top, sealed tube bottom is equipped with air release structure and inlet structure, coaxial slip is equipped with the optical axis in the sealed tube, the optical axis is connected with two boards.

Optionally, feed mechanism is including vertical backup pad that sets up on lower die body lateral wall, backup pad top level is equipped with the charge plate, it is equipped with two first stoppers to slide on the charge plate, the slip direction perpendicular to material of first stopper is in the advancing direction on the material passageway, first stopper top is connected with the second stopper, the bottom surface of second stopper is located the top between two first stoppers.

The beneficial effects of the invention are as follows:

the stamping steps of the materials are concentrated in one die, the materials can travel successively along with the stamping, and the stamping efficiency is greatly improved;

the parts are molded by stamping for multiple times, compared with one-step molding, deformation of the sheet metal product can be avoided, and finally, the residual internal stress in the sheet metal product is further released by bending the first bending part, so that later storage deformation is avoided;

in the punching and bending processes of the materials, the cutter component is matched with the round hole positioning groove to guide, position and fix the materials all the time, so that the forming quality of the parts is prevented from being influenced due to positioning errors;

the buffer column can reduce the damage to the cutter component when the upper die body is closed, and avoids the raw material crack and fracture caused by the fact that the larger impact force is applied to the sheet metal sheet.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a part;

FIG. 2 is a schematic three-dimensional structure of a part;

FIG. 3 is a schematic structural view of a stamping die;

FIG. 4 is a view in the A-A direction of FIG. 3;

FIG. 5 is a schematic view of the guide assembly;

FIG. 6 is a schematic three-dimensional view of a guide assembly;

FIG. 7 is a schematic view of the structure of the lower die plate;

FIG. 8 is a trace of the material passageway of FIG. 7;

fig. 9 is a schematic structural view of a mold assembly.

Reference numerals: 100. a lower die body; 101. a fixing plate; 102. a lower two plates; 103. a lower template; 104. a lower limit column; 105. a support pin; 106. a material guide column; 200. an upper die body; 201. an upper template; 202. a cutter guide plate; 203. a cutter fixing plate; 204. a cutter limiting plate; 205. an upper two plates; 206. a movable plate; 207. an upper limit column; 208. a buffer column; 300. a material passage; 301. a waste channel; 302. forming a channel; 3021. a first molding zone; 3022. a second molding zone; 3023. a third forming zone; 3024. a fourth forming zone; 3025. a fifth forming zone; 3026. a sixth forming zone; 3027. a seventh forming zone; 400. a mold assembly; 401. a plate groove; 402. a through hole groove; 403. a first elongated slot; 404. cutting off the groove; 405. a through hole positioning groove; 406. a bending groove; 407. molding blocks; 408. a discharge chute; 4081. a lead-out section; 4082. a guide block; 4083. a slide out section; 409. a circular hole groove; 410. a round hole positioning groove; 411. a second elongated slot; 412. a third elongated slot; 413. a waste tank; 500. a feed mechanism; 501. a support plate; 502. a feed plate; 503. a first limiting block; 504. a second limiting block; 600. a guide assembly; 601. a lower guide sleeve; 602. a guide sleeve; 603. a guide inner sleeve; 604. an upper guide sleeve; 700. a part; 701. a plate body; 702. a first bending part; 703. a through hole; 704. a second bending part; 705. a first elongated aperture.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those skilled in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 3 to 9, the invention discloses a stamping die for stamping a sheet metal into a part 700 shown in fig. 1 and 2, wherein the part 700 comprises a plate body 701, a first strip hole 705 is formed in the plate body 701, a first bending part 702 bending upwards is formed on one side of the plate body 701, a through hole 703 is formed in the first bending part 702, and second bending parts 704 bending downwards are formed on the side parts of the plate body 701 on two sides of the first bending part 702.

The stamping die comprises a lower die body 100 and an upper die body 200, a material channel 300 for a sheet metal to pass through is arranged between the lower die body 100 and the upper die body 200, the material channel 300 can be divided into a waste material channel 301 and two forming channels 302 in the advancing direction perpendicular to the sheet metal, the two forming channels 302 are symmetrical on two sides of the waste material channel 301, the forming channels 302 are sequentially divided into a first forming area 3021, a second forming area 3022, a third forming area 3023, a fourth forming area 3024, a fifth forming area 3025, a sixth forming area 3026 and a seventh forming area 3027 in the conveying direction of the sheet metal, and the sheet metal is sequentially processed in each forming area. The lower die body 100 at the bottom of the material channel 300 is provided with a die assembly 400, the upper die body 200 at the top of the material channel 300 is provided with a cutter assembly, the side part of the lower die body 100 is also connected with a feeding mechanism 500 at the beginning end of the material channel 300, and the beginning end of the material channel 300, namely the end of the material channel 300, which is close to the first forming area 3021.

The sheet metal sheet enters the material channel 300 through the feeding mechanism 500, the upper die body 200 descends to enable the cutter assembly to be matched with the die assembly 400 to punch the sheet metal sheet, the sheet metal sheet on the waste material channel 301 does not participate in forming, the sheet metal sheet does not belong to the structure of the part 700, the sheet metal sheet on the two forming channels 302 sequentially passes through seven forming areas to be processed into the part 700, and the two punched parts 700 and waste materials in the middle of the two parts are output from the tail end of the material channel 300.

The lower die body 100 comprises a fixed plate 101, a lower two plates 102 and a lower die plate 103 which are sequentially connected through bolts from bottom to top, and the die assembly 400 is arranged on the lower die plate 103.

The die assembly 400 includes a plate slot 401 in a first molding zone 3021, a through hole slot 402 in a second molding zone 3022, a first elongated hole slot 403 in a third molding zone 3023, a cutoff slot 404 between the third molding zone 3023 and a fourth molding zone 3024, a through hole positioning slot 405 in the fourth molding zone 3024 and a fifth molding zone 3025, a bending slot 406 between the fourth molding zone 3024 and the fifth molding zone 3025, a molding block 407 in a sixth molding zone 3026, and a discharge slot 408 in a seventh molding zone 3027, wherein:

the plate groove 401 is matched with the first bending part 702 of the part 700, and after the sheet metal thin plate in the plate groove 401 area is cut off by the cutter component, the sheet metal thin plate at the inner side of the plate groove 401 is the first bending part 702 of the part 700;

after the first forming area 3021 finishes forming the first bending portion 702, the sheet metal plate enters the second forming area 3022, the position of the through hole groove 402 corresponds to the first bending portion 702, and the cutter assembly cuts off the sheet metal plate of the through hole groove 402, so that the through hole 703 on the first bending portion 702 is formed;

after the second forming area 3022 completes forming the through hole 703, the sheet metal sheet enters the third forming area 3023, the position of the first elongated hole groove 403 corresponds to the first elongated hole 705 of the part 700, the cutter assembly cuts off the sheet metal sheet of the first elongated hole groove 403 so as to form the first elongated hole 705 on the plate body 701, the shape and the position of the cutting groove 404 correspond to the second bending portion 704, and the cutter assembly cuts off the sheet metal sheet at the cutting groove 404 so as to form the second bending portion 704 positioned on the right side of the plate body 701 of the third forming area 3023;

after the third forming area 3023 completes the forming of the first elongated hole 705, the sheet metal enters the fourth forming area 3024, the position of the through hole positioning groove 405 corresponds to the through hole 703, the cutter assembly is matched with the through hole positioning groove 405, the waste possibly remained in the through hole 703 is ejected downwards, the sheet metal is positioned and fixed, the cutter assembly cuts the sheet metal of the cutting groove 404, the second bending part 704 positioned at the left side of the plate body 701 of the fourth forming area 3024 is formed, the position of the bending groove 406 corresponds to the second bending part 704, and the cutter assembly is matched with the bending groove 406, so that the second bending part 704 positioned at the right side of the plate body 701 of the fourth forming area 3024 is bent downwards;

the sheet metal is formed at the second bending part 704 at the left side of the plate body 701 in the fourth forming area 3024, and after the second bending part 704 at the right side is bent, the sheet metal enters the fifth forming area 3025, the cutter assembly is matched with the through hole positioning groove 405 to eject the waste possibly remained in the through hole 703 downwards and realize positioning and fixing of the sheet metal, and the cutter assembly is matched with the bending groove 406 to enable the second bending part 704 at the left side of the plate body 701 in the fifth forming area 3025 to be bent downwards;

after the sheet metal sheet is bent at the second bending part 704 at the left side of the plate body 701 in the fifth forming region 3025, the sheet metal sheet enters the sixth forming region 3026, the position of the forming block 407 corresponds to the first bending part 702, and the upper die body 200 is matched with the forming block 407, so that the first bending part 702 is bent upwards;

after the sixth forming zone 3026 completes bending of the first bending portion 702, the sheet metal sheet is formed into the part 700, the part 700 enters the seventh forming zone 3027, the cutter assembly cuts the formed part 700 from the sheet metal sheet, and the part 700 is output from the spout 408.

The mold assembly 400 further comprises a circular hole slot 409, a circular hole positioning slot 410, a second elongated hole slot 411, a third elongated hole slot 412, and a waste slot 413 disposed on the waste channel 301, wherein:

the round hole groove 409 is positioned in the middle of the two first forming areas 3021, and the cutter component is matched with the round hole groove 409 to form a round hole for the sheet metal, wherein the round hole is a guiding and positioning hole;

the second strip hole slot 411 and the third strip hole slot 412 are respectively positioned at the edges of two sides of the waste channel 301, the second strip hole slot 411 is positioned between the first forming area 3021 and the second forming area 3022, the third strip hole slot 412 is positioned between the second forming area 3022 and the third forming area 3023, the cutter component is respectively matched with the second strip hole slot 411 and the third strip hole slot 412, and the second strip hole and the third strip hole are respectively formed at the two edges of the sheet metal positioned in the waste channel 301, so that the area of the sheet metal on the waste channel 301 is reduced, the sheet metal on the waste channel 301 is convenient to cut off subsequently, meanwhile, the connection area of the sheet metal on the waste channel 301 and the sheet metal on the forming channel 302 is reduced, and when the sheet metal on the subsequent waste channel 301 is cut off, the sheet metal on the forming channel 302 is ensured to be completely separated and the cut is flat;

the circular hole positioning grooves 410 are respectively arranged in the middle of the two second molding areas 3022, the two fourth molding areas 3024, the two fifth molding areas 3025 and the two sixth molding areas 3026, the positions of the circular hole positioning grooves 410 correspond to the positions of the circular holes, the cutter assemblies are matched with the circular hole positioning grooves 410, waste possibly remained in the circular holes are ejected downwards, the sheet metal sheets are positioned and fixed, the bottoms of the cutter assemblies matched with the circular hole positioning grooves 410 are in a circular table or cone shape, and when the circular holes deviate to a certain extent on the circular hole positioning grooves 410, the cutter assemblies descend through the circular holes and guide, position and fix the circular holes;

the scrap box 413 is located between the two seventh forming areas 3027, and the cutter assembly is matched with the scrap box 413 to cut the sheet metal sheet located on the scrap channel 301 between the two seventh forming areas 3027, so that the separation of the scrap and the parts 700 in the two seventh forming areas 3027 is achieved.

In the die assembly 400, blanking grooves are formed in the lower die body 100 below all grooves and holes except the bending grooves 406, and penetrate through the lower die plate 103, the lower two plates 102 and the fixing plate 101 of the lower die body 100. The profile of the top end of the blanking groove is matched with the groove and the hole above the blanking groove, so that cut materials on the sheet metal sheet can slide into the blanking groove, the caliber of the blanking groove is gradually increased from top to bottom, and the cut materials are prevented from being blocked in the blanking groove.

The spout 408 includes a lead-out section 4081 and a slide-out section 4083, and the molded part 700 is dropped into the lead-out section 4081, transported from the lead-out section 4081 to the slide-out section 4083, and finally output from the slide-out section 4083. The guiding section 4081 is positioned on the lower template 103 right below the seventh forming area 3027, the setting direction of the guiding section 4081 is perpendicular to the conveying direction of the sheet metal sheet in the material channel 300, the guiding section 4081 is an inclined plane, one end far away from the scrap channel 301 is a lower end, the guiding section 4081 is provided with a guiding block 4082, the profile of the guiding block 4082 is matched with the plate body 701 and the two second bending parts 704 of the part 700, the part 700 falls onto the guiding block 4082, the plate body 701 of the part 700 is in sliding contact with the top surface of the guiding block 4082, and the two second bending parts 704 of the part 700 are in contact with the two side walls of the guiding block 4082. The sliding-out section 4083 is arranged along the conveying direction of the sheet metal in the material channel 300, the sliding-out section 4083 is arranged on the lower two plates 102 below the guiding-out section 4081, and the sliding-out section 4083 is obliquely arranged and the end part at the outer side is the lower end.

The lower template 103 is also provided with a plurality of material guide posts 106 which are matched with the edges of the sheet metal, and the material guide posts 106 are respectively positioned at two sides of the material channel 300. The material guide column 106 is vertically arranged, a circle of guide groove is formed in the outer wall, and the width of the guide groove in the vertical direction is matched with the thickness of the sheet metal. The bottom of the material guide column 106 is coaxially and rotatably connected with a spring rod, a guide hole which is in sliding connection with the spring rod is arranged at a corresponding position on the lower template 103, and an elastic piece which is connected with the spring rod is arranged in the guide hole.

When the sheet metal sheet is conveyed on the material channel 300, edges on two sides of the sheet metal sheet are respectively guided by the material guide posts 106 in the guide grooves of the corresponding material guide posts 106, and the sheet metal sheet is guided by the material guide posts 106 to travel on the material channel 300. When the upper die body 200 descends to push the sheet metal sheet to descend, the material guide column 106 correspondingly descends, and the elastic piece in the guide hole is compressed; when the upper die body 200 is lifted, the material guide column 106 is lifted to drive the sheet metal sheet to lift up under the elasticity of the elastic piece, so that the sheet metal sheet rises to a position not lower than the top of the forming block 407.

As shown in fig. 3 and 4, the upper mold 200 sequentially includes, from bottom to top, an upper mold 201, a tool guide 202, a tool fixing plate 203, a tool limiting plate 204, an upper two plates 205, and a movable plate 206, where the upper mold 201 is bolted to the tool guide 202, and the tool fixing plate 203, the tool limiting plate 204, the upper two plates 205, and the movable plate 206 are bolted to each other sequentially, so that the upper mold 201 and the tool guide 202 as a whole can slide relative to the tool fixing plate 203, the tool limiting plate 204, the upper two plates 205, and the movable plate 206 as a whole.

The upper templates 201 are parallel to the lower templates 103, the shapes of the upper templates 201 above the sixth forming area 3026 and the seventh forming area 3027 correspond to the forming blocks 407 and the first bending portion 702 of the part 700, so that when the upper templates 201 of the two sixth forming areas 3026 descend, the upper templates 201 descend between the two forming blocks 407, and the upper templates 201 cooperate with the forming blocks 407 to cause the first bending portion 702 to bend upwards on the side wall of the forming block 407; when the upper die plates 201 of the seventh molding regions 3027 are lowered, the edges of the upper die plates 201 contact the inner side walls of the first bending portions 702 of the component 700 in the seventh molding regions 3027.

The cutter assembly is arranged on the cutter fixing plate 203, and comprises a bending cutter with a position corresponding to a bending groove 406 in the die assembly 400 and a plurality of blanking cutters corresponding to other grooves and holes in the die assembly 400, wherein the cutter limiting plate 204 fixedly arranged at the top of the cutter fixing plate 203 is used for assisting in fixing the cutter assembly, so that upward displacement of the cutter assembly on the cutter fixing plate 203 is avoided. The upper die plate 201 and the cutter guide plate 202 are provided with a plurality of guide grooves with positions and contours corresponding to the bending cutters and the blanking cutters, and the cutter assembly slides in the guide grooves on the upper die plate 201 and the cutter guide plate 202 when lifting.

A guide assembly 600 is arranged between the lower die body 100 and the upper die body 200, the guide assembly 600 comprises four lower guide sleeves 601 arranged on the lower two plates 102, a guide outer sleeve 602 is coaxially arranged in the lower guide sleeve 601 in a sliding manner, the guide outer sleeve 602 is connected with the cutter guide plate 202, a guide inner sleeve 603 is coaxially arranged in the guide outer sleeve 602 in a sliding manner, the guide inner sleeve 603 elastically slides in the guide outer sleeve 602, and an upper guide sleeve 604 connected with the upper two plates 205 is arranged at the top of the guide inner sleeve 603.

Four upper limit posts 207 and four lower limit posts 104 are respectively arranged at the bottom of the upper two plates 205 and the top of the lower two plates 102, and the upper die body 200 descends to the lowest position when the upper limit posts 207 are contacted with the lower limit posts 104. Four support pins 105 are further arranged on the lower two plates 102, the positions of the four support pins 105 correspond to the cutter guide plates 202, and the cutter guide plates 202 descend until reaching the lowest position when contacting with the support pins 105.

A plurality of buffer columns 208 are arranged between the upper two plates 205 and the cutter guide plate 202, the buffer columns 208 comprise sealing pipes vertically arranged at the top of the cutter guide plate 202, an air leakage structure and an air inlet structure are arranged at the bottoms of the sealing pipes, an optical axis is coaxially arranged in the sealing pipes in a sliding manner, and the optical axis is connected with the upper two plates 205. When the cutter fixing plate 203, the cutter limiting plate 204, the upper two plates 205 and the movable plate 206 descend, the optical axis descends in the sealing tube, gas in the sealing tube is compressed, the descending resistance of the optical axis gradually increases, after the gas pressure is high to a certain degree, part of gas in the sealing tube is slowly discharged through the gas leakage structure, the descending resistance of the optical axis gradually increases, the downward movement resistance of the upper die body 200 gradually increases, the damage to the cutter assembly when the upper die body 200 is closed is reduced, and raw material cracks and fractures caused by the fact that larger impact force is applied to a sheet metal sheet are avoided. When the cutter fixing plate 203, the cutter limiting plate 204, the upper two plates 205 and the movable plate 206 are lifted, the optical axis is lifted in the sealing tube, the compressed gas in the sealing tube also plays a role in lifting the optical axis, the internal air pressure of the sealing tube gradually drops along with the lifting of the optical axis, and the external air enters the sealing tube from the air inlet structure to restore the internal air pressure.

The feeding mechanism 500 comprises a vertically arranged supporting plate 501, and the supporting plate 501 is connected with the lower template 103 and the side walls of the lower two plates 102 through bolts. The top of the supporting plate 501 is connected with a horizontally arranged feeding plate 502 by bolts, and the height of the feeding plate 502 corresponds to that of the lower template 103. Two first limiting blocks 503 are slidably arranged on the feeding plate 502, and the sliding direction of the first limiting blocks 503 is perpendicular to the advancing direction of the sheet metal on the material channel 300.

Two sliding grooves are correspondingly formed in the feeding plate 502 at the bottom of the first limiting block 503, locking screws are arranged in the sliding grooves in a sliding mode, the locking screws are vertically arranged and are in threaded fit with the first limiting block 503, and expansion ends incapable of penetrating through the sliding grooves are arranged on the locking screws below the sliding grooves. The locking screw is loosened, the first limiting blocks 503 can slide to adjust the positions of the locking screw, the distance between the two first limiting blocks 503 is matched with the width of the sheet metal, and the locking screw is screwed to fix the positions of the first limiting blocks 503.

The top bolted connection of first stopper 503 has second stopper 504, and the bottom surface of second stopper 504 is located the top between two first stoppers 503, and second stopper 504 is used for restricting the displacement of sheet metal sheet in vertical direction.

The working principle of the invention is as follows:

the distance between the two first limiting blocks 503 is adjusted to be matched with the width of the sheet metal sheet, the sheet metal sheet is inserted between the two first limiting blocks 503, the sheet metal sheet advances towards the material channel 300 between the upper die body 200 and the lower die body 100 under the guidance of the two first limiting blocks 503, the edge of the sheet metal sheet enters the guide groove of the corresponding material guide column 106, and the material guide column 106 also guides the advancing of the sheet metal sheet;

after the sheet metal thin plate enters the two first forming areas 3021, the upper die body 200 descends, under the cooperation of the cutter assembly and the die assembly 400, round holes and second strip holes are punched in the sheet metal thin plate of the waste material channel 301, waste materials at the plate grooves 401 of the two first forming areas 3021 are cut off, so that the partial outline of the part 700 is presented, the plate body 701 and the first bending part 702 of the part 700 are positioned on the same plane, the upper die body 200 ascends to realize resetting, the spring rod is pushed by the elastic force of the elastic piece to ascend, the material guide column 106 drives the sheet metal thin plate to ascend, and the second limiting block 504 limits the vertical movement distance of the sheet metal thin plate on the feeding mechanism 500;

after the sheet metal thin plate continues to travel to the second forming area 3022, the upper die body 200 descends, the sheet metal thin plate is positioned and fixed under the cooperation of the cutter assembly and the die assembly 400, through holes 703 are punched in the first bending parts 702 of the parts 700 of the two second forming areas 3022, third strip holes are punched in the sheet metal thin plate of the waste material channel 301, the upper die body 200 ascends to realize resetting, and the material guide posts 106 elastically ascend to drive the sheet metal thin plate to ascend;

after the sheet metal sheet continues to travel to the third forming area 3023, the upper die body 200 descends, the sheet metal sheet is positioned and fixed under the cooperation of the cutter assembly and the die assembly 400, the first strip holes 705 are punched on the plate bodies 701 of the parts 700 in the two third forming areas 3023, the waste materials on the side parts of the plate bodies 701 close to the fourth forming area 3024 are cut off, the outline of the second bending part 704 on the side parts of the plate bodies 701 close to the fourth forming area 3024 is presented, the upper die body 200 ascends to reset, and the material guide columns 106 elastically ascend to drive the sheet metal sheet;

after the sheet metal sheet continues to travel to the fourth forming area 3024, the upper die body 200 descends, the sheet metal is positioned and fixed under the cooperation of the cutter assembly and the die assembly 400, the parts 700 positioned in the two fourth forming areas 3024 are cut off, waste materials on the side parts of the sheet metal sheet 701, close to the third forming area 3023, are cut off, the outline of the second bending portion 704 on the side of the sheet metal sheet 701, close to the third forming area 3023, is presented, the second bending portion 704 of the sheet metal sheet 701, close to the fifth forming area 3025, is bent downwards, the upper die body 200 ascends to reset, and the material guide column 106 is elastically ascended to drive the sheet metal to ascend;

after the sheet metal sheet continues to travel to the fifth forming area 3025, the upper die body 200 descends, the sheet metal is positioned and fixed under the cooperation of the cutter assembly and the die assembly 400, the parts 700 positioned in the two fifth forming areas 3025 are bent downwards at the second bending part 704 of the plate body 701 close to one side of the fourth forming area 3024, the upper die body 200 ascends to realize resetting, and the material guide column 106 elastically ascends to drive the sheet metal sheet to ascend;

after the sheet metal sheet continues to travel to the sixth forming area 3026, the upper die body 200 descends, the sheet metal sheet is positioned and fixed under the cooperation of the cutter assembly and the die assembly 400, the first bending portion 702 of the part 700 located in the two sixth forming areas 3026 is bent upwards, the upper die body 200 ascends to reset, and the material guide column 106 elastically ascends to drive the sheet metal sheet to ascend;

after the sheet metal plate continues to travel to the seventh forming zone 3027, the upper die body 200 is lowered, the sheet metal plate is positioned and fixed by the cooperation of the cutter assembly and the die assembly 400, the scrap between the parts 700 in the two seventh forming zones 3027 is cut off, the two parts 700 are formed and divided, and the two parts 700 slide out of the discharge chute 408 under the two seventh forming zones 3027 respectively.

The invention has the beneficial effects that:

the part 700 is molded by stamping for several times, compared with one-step molding, deformation of a sheet metal product can be avoided, and finally, the first bending part 702 is subjected to bending treatment to further release residual internal stress in the sheet metal product, so that later storage deformation is avoided;

in the process of punching and bending the material, the cutter component is matched with the round hole positioning groove 410 to guide, position and fix the material all the time, so that the forming quality of the part 700 is prevented from being influenced due to positioning errors;

the buffer column 208 can reduce damage to the cutter assembly when the upper die body 200 is closed, and avoid raw material cracks and fractures caused by applying a large impact force on the sheet metal sheet.

The above embodiments are only preferred embodiments of the present invention, and are not limiting to the technical solutions of the present invention, and any technical solution that can be implemented on the basis of the above embodiments without inventive effort should be considered as falling within the scope of protection of the patent claims of the present invention.

Claims

1. The utility model provides a stamping die for processing part, part include the plate body, have seted up first rectangular hole on the plate body, and plate body one side has the first kink of upwards buckling, has seted up the through-hole on the first kink, and the plate body lateral part of first kink both sides has the second kink of buckling downwards, its characterized in that stamping die includes:

the mould subassembly is located on the lower die body, includes:

the plate groove is arranged in the first forming area;

the through hole groove is arranged in the second molding area;

the first strip hole groove is arranged in the third forming area;

the molding block is arranged in the sixth molding zone;

the plate groove is matched with the first bending part of the part, and the corresponding blanking knife cuts out materials along the plate groove to obtain the outline of the first bending part; the position of the through hole groove corresponds to the first bending part, and the corresponding blanking knife punches down along the through hole groove to obtain a through hole on the first bending part; the position of the first strip hole groove corresponds to the first strip hole, and the corresponding blanking knife punches down along the first strip hole groove to obtain a first strip hole of the part; the shape and the position of the cutoff groove correspond to those of the second bending part, and the corresponding blanking knife is used for obtaining the outline of the second bending part of the parts on two sides in the cutoff groove after being punched along the cutoff groove; the positions of the bending grooves correspond to the second bending parts, and the corresponding bending cutters are punched down along the bending grooves to enable the parts on two sides to be bent downwards at the second bending parts in the bending grooves; the position of the forming block corresponds to the first bending part, and the upper die body presses down the material to enable the first bending part to be bent upwards through the forming block; punching a round hole on the material along the round hole groove by the corresponding punching cutter, enabling the round hole to be positioned at the round hole positioning groove by the material in advance, and enabling the punching cutter above the round hole positioning groove to descend and pass through the round hole to guide, position and fix the material; the corresponding blanking knife is punched down along the waste chute, and the materials in the waste chute are cut off, so that two parts which are formed in the two seventh forming areas are disconnected; the lower die body comprises a fixed plate, a lower two plates and a lower die plate which are sequentially connected through bolts from bottom to top, and the die assembly is arranged on the lower die plate; the upper die body sequentially comprises an upper die plate, a cutter guide plate, a cutter fixing plate, a cutter limiting plate, an upper two plates and a movable plate from bottom to top, wherein the upper die plate is connected with the cutter guide plate through bolts, the cutter fixing plate, the cutter limiting plate, the upper two plates and the movable plate are sequentially connected through bolts, and the upper die plate and the cutter guide plate which are used as a whole can slide relatively with the cutter fixing plate, the cutter limiting plate, the upper two plates and the movable plate which are used as a whole; the cutter component is arranged on the cutter fixing plate, and a cutter limiting plate fixedly arranged at the top of the cutter fixing plate is used for assisting in fixing the cutter component; the upper die plate and the cutter guide plate are provided with a plurality of guide grooves with positions and outlines corresponding to the bending cutter and the blanking cutters; a plurality of buffer columns are arranged between the upper two plates and the cutter guide plate, each buffer column comprises a sealing tube vertically arranged at the top of the cutter guide plate, an air leakage structure and an air inlet structure are arranged at the bottom of each sealing tube, an optical axis is coaxially arranged in each sealing tube in a sliding manner, and the optical axis is connected with the upper two plates;

the upper template is parallel to the lower template, and the shape of the upper template above the sixth forming area and the seventh forming area corresponds to the first bending parts of the forming blocks and the parts; when the upper templates of the two sixth forming areas descend, the upper templates descend between the two forming blocks, and the upper templates are matched with the forming blocks so that the first bending parts bend upwards on the side walls of the forming blocks; when the upper templates of the two seventh molding areas descend, the edges of the two sides of the upper templates are contacted with the inner side walls of the first bending parts of the parts in the two seventh molding areas;

the feeding mechanism comprises a supporting plate vertically arranged on the side wall of the lower die body, a feeding plate is horizontally arranged at the top of the supporting plate, two first limiting blocks are slidably arranged on the feeding plate, the sliding direction of each first limiting block is perpendicular to the advancing direction of a material on a material channel, the top of each first limiting block is connected with a second limiting block, and the bottom surface of each second limiting block is located above between the two first limiting blocks.

2. The stamping die of claim 1, wherein the die assembly further comprises a second elongated slot and a third elongated slot disposed on the waste channel, the second elongated slot and the third elongated slot being located at edges of both sides of the waste channel, respectively; the second strip-shaped hole groove is positioned between the first forming area and the second forming area, and the third strip-shaped hole groove is positioned between the second forming area and the third forming area; the cutter component is matched with the second long-strip hole groove and the third long-strip hole groove respectively, and the second long-strip hole and the third long-strip hole are formed in two edges of the material in the waste material channel respectively.

3. The stamping die of claim 1, wherein the seventh forming zone is provided with a spout comprising a lead-out section and a slide-out section; the guide-out section is positioned on the lower die body right below the seventh forming area, the setting direction of the guide-out section is perpendicular to the conveying direction of the materials in the material channel, the guide-out section is an inclined plane, one end far away from the waste material channel is a lower end, the guide-out section is provided with a guide block, and the profile of the guide block is matched with the plate body of the part and the two second bending parts; the sliding-out section is arranged along a conveying direction parallel to the material in the material channel, the sliding-out section is arranged on the lower die body below the guiding-out section, and the end part of the sliding-out section, which is arranged in an inclined manner and positioned at the outer side, is a lower end; the parts formed in the seventh forming area fall onto the guide block of the guiding-out section, the plate body of the parts is in sliding contact with the top surface of the guide block, the two second bending parts of the parts are in contact with the two side walls of the guide block, the guide block is used for guiding the parts in a sliding manner on the guiding-out section, and the parts are conveyed to the sliding-out section from the guiding-out section and finally output from the sliding-out section to the die.

4. The stamping die of claim 1, wherein the lower die body is provided with a plurality of material guide posts with positions matched with edges of materials, the material guide posts are vertically arranged, the outer wall of each material guide post is provided with a circle of guide grooves, the width of each guide groove in the vertical direction is matched with the thickness of the materials, the bottoms of the material guide posts are coaxially and rotatably connected with spring rods, the corresponding positions of the lower die body are provided with guide holes in sliding connection with the spring rods, and elastic pieces connected with the spring rods are arranged in the guide holes.

5. The stamping die according to claim 1, wherein a guide assembly is arranged between the lower die body and the upper die body, the guide assembly comprises four lower guide sleeves arranged on the lower two plates, a guide outer sleeve is coaxially arranged in the lower guide sleeve in a sliding manner, the guide outer sleeve is connected with the cutter guide plate, a guide inner sleeve is coaxially arranged in the guide outer sleeve in a sliding manner, the guide inner sleeve elastically slides in the guide outer sleeve, and an upper guide sleeve connected with the upper two plates is arranged at the top of the guide inner sleeve; the upper limiting columns and the lower limiting columns corresponding to the four positions are respectively arranged at the bottom of the upper two plates and the top of the lower two plates, and the lower two plates are also provided with four supporting pins corresponding to the cutter guide plates.