A front punching and flanging die for an upper case

Abstract

A front punching and flanging die of upper box body, comprising an upper die seat and a lower die seat, the lower die seat is provided with positioning pins for positioning workpieces, a punching assembly, a flanging assembly, a material collecting assembly and a material pressing assembly are arranged between the upper die seat and the lower die seat; the punching assembly comprises multiple sets of punches and multiple sets of concave die sleeves, the multiple sets of punches are vertically fixed on the lower bottom surface of the upper die seat, and the multiple sets of concave die sleeves are vertically fixed on the upper top surface of the lower die seat; the flanging assembly comprises an upper die insert block and a lower die insert block, the upper die insert block and the lower die insert block are matched for flanging the workpieces; the material pressing assembly comprises a material pressing body for pressing the workpieces; the material collecting assembly is arranged on the lower die seat for collecting the waste materials generated after stamping. By using the die, the punching and flanging shaping process can be completed by only one set of die, the process is simple, no too many personnel are involved, the machining product precision is very high, the part transfer process and the clamping time of multiple sets of dies are saved, energy consumption is reduced, and production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing, in particular to a front punching and flanging die for an upper box body. BACKGROUND

[0002] Punching is a kind of stamping process that separates part of material or workpiece from another part of material, workpiece or waste by using a punch. Punching is a general term for separation processes such as shearing, blanking, punching, punching, slotting, cutting, chiseling, trimming, tongue cutting, cutting, trimming, etc.

[0003] At present, in the production process of the upper box body of the automobile, the material often needs to be punched and flanged. If the material needs to be punched and flanged, the material needs to be put into the punching die and the flanging die respectively. The disadvantage of this processing method is:

[0004] The entire production process requires at least two sets of punching die and flanging die to complete, if the product has multiple processes, effective protection is required between processes, and at least two relevant professionals are required for each process. Due to the involvement of multiple sets of stamping dies and part transfer, it is easy to cause product rejection due to missing processes, product transfer scratches, part deformation, etc. This is the deficiency of the prior art. SUMMARY

[0005] In order to solve the technical problems of low product precision and deformation of the transferred parts caused by the separation of the front punching and flanging processes of the upper box body in the prior art, the present application provides a technical solution of a front punching and flanging die for an upper box body, which can avoid the above problems.

[0006] The technical solution adopted by the present application to solve the technical problem is a front punching and flanging die for an upper box body, comprising an upper die seat and a lower die seat, the lower die seat is provided with a positioning pin for positioning the workpiece, the upper die seat and the lower die seat are provided with a punching assembly, a flanging assembly, a material collecting assembly and a material pressing assembly;

[0007] The punching assembly comprises a plurality of punches and a plurality of concave die sleeves, a plurality of punches are vertically fixed on the lower bottom surface of the upper die seat, a plurality of concave die sleeves are vertically fixed on the upper top surface of the lower die seat, and the punch and the concave die sleeve cooperate to punch the workpiece;

[0008] The flanging assembly comprises an upper die insert and a lower die insert, the upper die insert is fixed on the bottom of the left end of the upper die seat, and the lower die insert is fixed on the top of the left end of the lower die seat. The upper die insert and the lower die insert cooperate to flange the workpiece;

[0009] The material pressing assembly comprises a material pressing body, the material pressing body is provided with a plurality of through holes matched with the plurality of punches for pressing the workpiece;

[0010] The aggregate assembly comprises a waste box arranged on the lower die base; and a waste collecting device for collecting the waste generated after stamping.

[0011] Further improvements of the present application are that the left and right ends of the upper die base extend downward to form mounting boxes, the left and right ends of the lower die base sink to form mounting grooves, and the mounting grooves are matched with the mounting boxes; the mounting boxes and the mounting grooves are provided with connecting mechanisms, the connecting mechanisms comprise end head guide columns and end head guide sleeves, the end head guide columns are vertically arranged in the mounting grooves, the end head guide sleeves are vertically arranged in the mounting boxes, and the end head guide columns are slidably connected with the end head guide sleeves.

[0012] Further improvements of the present application are that the bottom of the upper die insert is a downward protruding right angle, and the top of the lower die insert is a downward concave right angle.

[0013] Further improvements of the present application are that the pressing body is a cavity structure with an open top, a grid-shaped supporting plate is arranged in the cavity structure, the side wall of the pressing body is provided with a first side pin hole, the side wall of the upper die base is provided with a second side pin hole, and a side fixing pin for working and safety limiting of the pressing body is arranged in the first side pin hole and the second side pin hole.

[0014] Further improvements of the present application are that the upper die base is a cavity structure with an open top, a group of springs are arranged at the bottom surface of the cavity structure and close to the side wall, and a spring retainer is arranged in the interior of each spring.

[0015] Further improvements of the present application are that a limiting block for controlling the pressing depth of the upper die is fixed at the front end and the rear end of the mounting groove and on the lower die base, and a movable block is connected to the upper part of the limiting block through a hinge.

[0016] Further improvements of the present application are that a dead block is arranged at the top of the pressing body and surrounds the pressing body.

[0017] Further improvements of the present application are that the three side walls of the mounting groove are provided with first end head guide plates, the first end head guide plates are fixed to the mounting groove through screws, and second end head guide plates are arranged on the mounting surface of the mounting box and fixed to the mounting box through screws.

[0018] Further improvements of the present application are that the four side walls of the pressing body are provided with pressing body guide plates, and the pressing body guide plates are fixed to the pressing body through screws.

[0019] Further improvements of the present application are that end head buffers with a buffering function are fixed at the front and rear parts of the mounting groove and on the lower die base.

[0020] The present application has the following beneficial effects:

[0021] 1. Using this invention, only one set of molds is needed to complete the punching and flanging process. The process is simple, requires few personnel, and produces products with very high precision.

[0022] 2. This invention can combine processing steps, thereby improving production efficiency;

[0023] 3. This invention eliminates the parts transfer process and the clamping time of multiple sets of molds, saving energy and reducing consumption, and increasing production efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the upper and middle mold after it has been flipped 180 degrees in the vertical direction;

[0026] Figure 3 for Figure 1 Schematic diagram of the middle and lower mold;

[0027] Figure 4 for Figure 1 A schematic diagram of the structure of the medium-pressure material assembly after it has been flipped 180 degrees in the vertical direction;

[0028] Figure 5 For the present invention Figure 3 A schematic diagram of the structure of part A in the middle.

[0029] In the figure: 1 is the upper die holder, 101 is the first punch, 102 is the second punch, 103 is the spring retainer, 104 is the lifting lug, 105 is the lifting rod, 107 is the upper die insert, 108 is the second end guide plate, 109 is the end guide sleeve, 110 is the mounting box, and 111 is the side fixing pin.

[0030] 2 is the lower mold base, 201 is the waste box, 202 is the second concave mold sleeve, 203 is the sensor, 204 is the first concave mold sleeve, 205 is the end buffer, 206 is the sensor connector, 207 is the first end guide plate, 208 is the end guide post, 209 is the limit block, 210 is the cylinder assembly, 211 is the lower mold insert, 212 is the lower mold insert, 213 is the movable block, 214 is the hinge, 215 is the mounting groove, and 216 is the positioning pin.

[0031] 3 is the pressing body, 301 is the pressing body guide plate, 302 is the dead block, 304 is the through hole, and 305 is the first side pin hole. Detailed Implementation

[0032] For ease of description, the coordinate system is defined as follows: Figure 1 As shown, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical.

[0033] As Figures 1-5 shown, a front punching and flanging die of upper box body, comprising an upper die seat 1 and a lower die seat 2, the lower die seat 1 is provided with a positioning pin for positioning the workpiece, the upper die seat 1 and the lower die seat 2 are provided with a punching assembly, a flanging assembly, a material collecting assembly and a material pressing assembly;

[0034] The punching assembly comprises a plurality of punch heads and a plurality of concave die sleeves, the plurality of punch heads are vertically fixed on the lower bottom surface of the upper die seat 1, and the plurality of concave die sleeves are fixed on the upper top surface of the lower die seat 2, the punch heads and the concave die sleeves cooperate to punch the workpiece; the punching assembly comprises two punch heads, which are a first punch head 101 and a second punch head 102; correspondingly, the upper top surface of the lower die seat 2 should also be provided with two concave die sleeves.

[0035] The flanging assembly comprises an upper die insert 107 and a lower die insert 211, the upper die insert 107 is fixed on the bottom of the left end of the upper die seat 1, and the lower die insert 211 is fixed on the top of the left end of the lower die seat 2; specifically, the bottom of the upper die insert 107 is a downward protruding right angle, and the top of the lower die insert 211 is a downward recessed right angle. During work, the lower die insert 211 is fixed, and the upper die insert 107 moves downward with the movement of the upper die seat 1, so that the protruding right angle of the upper die insert 107 is just clamped in the recessed right angle of the lower die insert 211, and the workpiece between the upper die insert 107 and the lower die insert 211 is formed into a right angle flange.

[0036] The material pressing assembly comprises a material pressing body 3, the material pressing body 3 is provided with a plurality of through holes 304 for cooperating with the plurality of punch heads; for pressing the workpiece. In the present application, the upper die seat is provided with two punch heads, and correspondingly, two through holes 304 are provided in the material pressing body 3, so that the punch heads can smoothly pass through.

[0037] The material collecting assembly comprises a waste box 201 provided in the lower die seat 2, for collecting the waste generated after stamping; a plurality of sliding grooves are provided in the lower die seat 2 and cooperate with the waste box 201, the waste box 201 is slidingly connected with the sliding grooves, the waste generated during the stamping process falls into the waste box 201 through the concave die sleeve, and after the waste in the waste box 201 is full, the waste box 201 is pulled out at the front of the lower die seat 2 to pour out the waste.

[0038] Further, the left and right ends of the upper die seat 1 extend downward to form installation boxes 110, and the left and right ends of the lower die seat 2 sink downward to form installation grooves 215, which are matched with the installation boxes 110; the installation boxes 110 and the installation grooves 215 are provided with connecting mechanisms, which include end head guide columns 208 and end head guide sleeves 109, the end head guide columns 208 are vertically arranged in the installation grooves 215, the end head guide sleeves 109 are vertically arranged in the installation boxes 110, and the end head guide columns 208 are slidably connected with the end head guide sleeves 109. The end head guide columns 208 and the end head guide sleeves 109 play a guiding role for the upper and lower dies of the die, and can ensure the blanking precision.

[0039] Further, the pressure material body 3 is a cavity structure with an open top, and a grid-shaped supporting plate is arranged in the cavity structure; a first side pin hole 305 is arranged on the side wall of the pressure material body 3, a second side pin hole is arranged on the side wall of the upper die seat 1, and a side fixing pin 111 for working and limiting the pressure material body 3 is arranged in the first side pin hole 305 and the second side pin hole; the side fixing pin 111 is used for fixing the pressure material body 3 in the upper die seat 1, so as to fix the pressure material body 3.

[0040] Further, the upper die seat 1 is a cavity structure with an open top, and a group of springs are arranged at the bottom surface of the cavity structure and close to the side wall; a spring retainer 103 is arranged in each spring. The spring is used for exerting pressure on the pressure material body 3, so as to tightly fix the workpiece. The spring guide retainer is used for preventing the spring from moving during the stamping process.

[0041] Further, as shown in Figure 5 limiting blocks 209 for controlling the pressing depth of the upper die are fixed at the front end and the rear end of the installation groove 215 and on the lower die seat 2; the upper part of each limiting block 209 is connected with a movable block 213 through a hinge 214. The pressing depth of the upper die is controlled by adjusting the height of the limiting blocks; because the die contains elastic elements such as springs, when the die is not used, in order not to compress the spring (the compression work is easy to reduce the service life of the spring), the movable block 213 is placed on the limiting block to lift the upper die; when the upper die is ready to work, the movable block 213 is taken down; and in order to prevent the movable block 213 from being lost during taking and placing, the movable block 213 and the limiting block are connected through a chain.

[0042] Further, a dead block 302 is arranged at the top of the pressure material body 3 and surrounds the pressure material body 3. The dead block 302 is arranged along the side wall of the pressure material body 3, and is mainly used for adjusting the closing position of the die. If the die is not closed in place, the height of the dead block 302 can be adjusted to reduce the closing gap of the upper die and the lower die.

[0043] Further, the three side walls of the installation groove 215 are provided with first end head guide plates 207, which are fixed with the installation groove 215 through screws; the installation surface of the installation box 110 is provided with second end head guide plates 108, which are fixed with the installation box 110 through screws. The first end head guide plates 207 and the second end head guide plates 108 are used for guiding and sliding of the upper and lower molds. When the machining error of the mold sliding surface is large or the machining error is wrong, shims can be arranged on the back surface of the end head guide plates to adjust or remedy.

[0044] Further, the four side walls of the pressure material body 3 are provided with pressure material body guide plates 301, which are fixed with the pressure material body 3 through screws. The pressure material body guide plates 301 are used for guiding and sliding between the upper mold and the pressure material body 3. When the machining error of the mold sliding surface is large or the machining error is wrong, shims can be arranged on the back surface of the pressure material body guide plates 301 to adjust or remedy.

[0045] Further, one end of the upper mold base 1 is provided with a lifting lug 104 and a lifting bar 105, which are used for loading and unloading and lifting the upper mold.

[0046] Further, the front and rear parts of the installation groove 215 and located on the lower mold base 2 are respectively fixed with end head buffers 205 with buffering function, which can play a certain damping effect when the mold is punched.

[0047] The working principle of the present application is as follows:

[0048] The workpiece plate is fed by a manual or automatic feeder, and the workpiece is stably fed through the product profile of the lower mold and the positioning pin 216;

[0049] During stamping, the upper mold moves downward, the spring exerts a downward force on the pressure material assembly, so that the pressure material assembly presses the workpiece, preventing the workpiece from moving during stamping;

[0050] The upper mold continues to move downward, the upper mold insert 107 contacts the workpiece, and the lower mold insert 211 together flanges the workpiece;

[0051] The upper mold continues to move downward, the punch of the upper mold and the concave die sleeve of the lower mold cooperate to punch the workpiece, and the waste material is collected by the waste material box 201;

[0052] After stamping is completed, the workpiece is ejected by the cylinder assembly 210 to prevent material from being stuck.

[0053] In addition to the technical features described in the specification, they are known to those skilled in the art.

Claims

1. A punching and flanging die for the front part of an upper box body, comprising an upper die base and a lower die base, characterized in that, The lower die base is provided with a positioning pin for positioning the workpiece, and a punching assembly, a flanging assembly, a material collecting assembly and a pressing assembly are provided between the upper die base and the lower die base; A punching assembly includes multiple sets of punches and multiple sets of die sleeves. The multiple sets of punches are vertically fixed to the lower bottom surface of the upper die base, and the multiple sets of die sleeves are vertically fixed to the upper top surface of the lower die base. The punches and die sleeves cooperate to punch the workpiece. The flanging assembly includes an upper die insert and a lower die insert. The upper die insert is fixed to the bottom of the left end of the upper die base, and the lower die insert is fixed to the top of the left end of the lower die base. The upper die insert and the lower die insert cooperate to flanging the workpiece. A clamping assembly includes a clamping body, which has multiple sets of through holes for cooperating with multiple sets of punches; used to clamp the workpiece. The material collection assembly includes a scrap box disposed on the lower die holder for collecting scrap generated after stamping. The left and right ends of the upper mold base extend downward to form a mounting box, and the left and right ends of the lower mold base sink downward to form a mounting groove. The mounting groove cooperates with the mounting box. A connecting mechanism is provided in the mounting box and the mounting groove. The connecting mechanism includes an end guide post and an end guide sleeve. The end guide post is vertically set in the mounting groove, and the end guide sleeve is vertically set in the mounting box. The end guide post and the end guide sleeve are slidably connected. The bottom of the upper mold insert is a downward-convex right angle, and the top of the lower mold insert is a downward-concave right angle; The pressure body is a cavity structure with an open top. A grid-like support plate is provided inside the cavity structure. The side wall of the pressure body is provided with a first side pin hole, and the side wall of the upper mold base is provided with a second side pin hole. Side fixing pins for working and safety limiting of the pressure body are installed in the first side pin hole and the second side pin hole. The upper mold base is a cavity structure with an open top. There is a set of springs on the bottom surface of the cavity structure near the side wall, and each spring is equipped with a spring retainer inside. Limiting blocks for controlling the pressing depth of the upper mold are fixed at the front and rear ends of the mounting groove and on the lower mold base, respectively. The upper part of the limiting block is connected to a movable block by a hinge. A dead block is installed on the top of the pressing body and around the pressing body.

2. The punching and flanging die for the front part of the upper housing according to claim 1, characterized in that, Each of the three side walls of the mounting slot is provided with a first end guide plate, which is fixed to the mounting slot by screws; a second end guide plate is provided on the mounting surface of the mounting box, which is fixed to the mounting box by screws.

3. The punching and flanging die for the front part of the upper housing according to claim 1, characterized in that, The pressing body is provided with pressing body guide plates on all four side walls, and the pressing body guide plates are fixed to the pressing body by screws.

4. The punching and flanging die for the front part of the upper housing according to claim 2, characterized in that, End buffers with buffering function are fixed at the front and rear of the mounting slot and on the lower mold base, respectively.

Images