CN215544185U

CN215544185U - Die set

Info

Publication number: CN215544185U
Application number: CN202121689838.8U
Authority: CN
Inventors: 林良海; 毕洪涛
Original assignee: Leqing Mingshi Vehicle Fitting Co ltd
Current assignee: Leqing Mingshi Vehicle Fitting Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-01-18
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a die which comprises a long circular hole punching mechanism, a fillet cutting mechanism and a length adjusting mechanism, wherein the length adjusting mechanism is used for adjusting the distance between the long circular hole punching mechanism and the fillet cutting mechanism. According to the stamping and cutting die disclosed by the utility model, the distance between the upper die punch of the long round hole and the upper die cutter with the edge round conduction angle can be adjusted by adjusting the upper length positioning block, and the distance between the lower die base and the lower die fixing plate can be adjusted by adjusting the lower length positioning block, so that the blanking requirements of cold bending angle steel type pipe hangers with different total lengths, different long round holes and different end part distances can be met. The stamping and cutting die disclosed by the utility model has the advantages that the production efficiency is improved, the manufacturing process is simplified, the consumption of raw materials is reduced, and the production cost is greatly reduced.

Description

Die set

Technical Field

The utility model relates to the technical field of part processing, in particular to a punching, fillet forming and cutting combined die.

Background

The underframe of the railway freight car has more accessories, the shape and structure of different types of underframe are different greatly, and the accessories play a role in fixing braking parts. Among these underframe accessories, there is one commonly known in the industry as a "cold bend angle steel type pipe hanger," which has a rounded corner at one end and two oblong holes for securing a brake fitting. The cold-bending angle steel type pipe hanger has the same appearance structure, but has various lengths and different distances between two long circular hole holes and an end part, and the prior manufacturing process generally has two types, one type is that after cold-bending angle steel is directly adopted for cutting and blanking, the end part of the cold-bending angle steel is guided into a circular bead and the long circular hole is formed in the cold-bending angle steel through machining, the production period of the mode is longer, the machining working hours are longer, and the manufacturing cost is higher; the other type is that the steel plate is used as a raw material, and is bent and formed after a round angle, a long round hole and an outer contour are cut out from the steel plate by a laser cutting machine, so that the manufacturing cost is high due to low material utilization rate and high laser cutting cost. Because this cold bend angle steel shaped tube gallows size is various, for this reason, need make many sets of stamping die and carry out stamping production, not only inefficiency, the expense is still high moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a die, which is used for solving the problems of low efficiency and high cost caused by the fact that a plurality of sets of stamping dies are needed for stamping production in the production process of a cold-bending angle steel type pipe hanger for a railway freight car underframe.

The present invention provides a mold comprising: the long circular hole punching mechanism comprises two long circular hole upper die punching heads and a lower die base, wherein the lower die base is provided with two long circular hole lower die punching grooves, and the two long circular hole upper die punching heads correspond to the two long circular hole lower die punching grooves respectively; the fillet cutting mechanism comprises a fillet cutting upper die cutter and a lower die fixing plate, wherein round guide corners are respectively arranged at two ends of the fillet cutting upper die cutter, a fillet cutting upper die groove is arranged on the lower die fixing plate, and the fillet cutting upper die groove and the fillet cutting upper die cutter are identical in shape and size and correspond to each other in spatial position; the length adjusting mechanism is used for adjusting the distance between the long circular hole punching mechanism and the fillet cutting mechanism and comprises a plurality of upper length positioning blocks and a plurality of lower length positioning blocks, the upper length positioning blocks are spliced between the long circular hole upper die punch and the fillet cutting upper die cutter, and the lower length positioning blocks are spliced between the lower die base and the lower die fixing plate; when steel sheet strip or belted steel strip walk in proper order in the slotted hole punching press mechanism length adjustment mechanism with during the fillet shutdown mechanism, mould drift strikes the strip and falls into two slotted hole lower mould die-cuts inslot on two slotted holes, forms two slotted holes on the strip, the fillet cuts out mould sword cutting strip and falls into the fillet and cuts out the die cavity in, forms two fillets with one side both ends on the strip.

The upper template and the lower template are arranged in parallel up and down, two guide sleeves are fixedly connected to two sides of the bottom surface of the upper template respectively, two guide posts are fixedly connected to two sides of the top surface of the lower template respectively, and the two guide sleeves are movably sleeved on the two guide posts respectively to connect the upper template and the lower template into a whole; the long round hole punching mechanism and the fillet cutting mechanism are respectively arranged on two sides of the area between the upper template and the lower template; the two slotted hole upper die punches are fixedly connected to the bottom surface of the upper die plate, the lower die base is fixedly connected to the top surface of the lower die plate, the fillet cutting upper die cutter is fixedly connected to the bottom surface of the upper die plate, and the lower die fixing plate is fixedly connected to the top surface of the lower die plate.

Furthermore, the long round hole punching mechanism comprises a long round hole upper die assembly and a long round hole lower die assembly, the long round hole upper die assembly comprises an upper die base plate, an upper die pressing plate, an upper die base, two long round hole upper die punches and an upper die base plate, an upper die base plate pressing plate groove is formed in the left side of the bottom surface of the upper die plate, an upper die base plate installation groove is formed in the top surface of the upper die plate, and the upper die base plate pressing plate groove is communicated with the left side of the upper die base plate installation groove; the upper die base plate and the upper die pressing plate are arranged in the upper die base plate pressing plate groove side by side, the upper die base plate is arranged in the upper die base plate mounting groove, and the upper die base plate and the upper die pressing plate are fixedly connected; the upper die base is fixedly connected with the upper die base cushion plate, the upper die base is provided with two hole grooves, and two long-circular-hole upper die punches are respectively arranged in the two hole grooves of the upper die base; the slotted hole lower die assembly comprises a lower die base cushion plate, a lower die pressing plate, a lower die base and a lower die base plate, wherein a lower die base cushion plate pressing plate groove is formed in the left side of the top surface of the lower die plate, a lower die base plate mounting groove is formed in the bottom surface of the lower die plate, and the lower die base cushion plate pressing plate groove is communicated with the left side of the lower die base plate mounting groove; the lower die base plate and the lower die pressing plate are arranged in the lower die base plate pressing plate groove side by side, the lower die base plate is arranged in the lower die base plate mounting groove, and the lower die base plate and the lower die pressing plate are fixedly connected; the lower die base is fixedly connected with the lower die base cushion plate, the lower die base is provided with two long circular hole lower die punching grooves, and two long circular hole upper die punching heads correspond to the two long circular hole lower die punching grooves respectively.

Furthermore, the pressing plate groove of the upper die seat cushion plate is a chute with one inclined side, the section of the upper die seat cushion plate is trapezoidal, the two side surfaces of the upper die seat cushion plate are inclined surfaces, one side surface of the upper die pressing plate is an inclined surface, and the two inclined surfaces of the upper die seat cushion plate are respectively matched with the inclined surface of the pressing plate groove of the upper die seat cushion plate and the inclined surface of the upper die pressing plate; the lower die seat cushion plate pressing plate groove is a chute with one side edge being an inclined plane, the cross section of the lower die seat cushion plate is trapezoidal, two side surfaces of the lower die seat cushion plate are inclined planes, one side surface of the lower die pressing plate is an inclined plane, and the two inclined planes of the lower die seat cushion plate are respectively matched with the inclined plane of the lower die seat cushion plate pressing plate groove and the inclined plane of the lower die pressing plate.

Further, the fillet cutting mechanism comprises a fillet cutting upper die assembly and a fillet cutting lower die assembly, the fillet cutting upper die assembly comprises an upper die fixing plate and a fillet cutting upper die cutter, the upper die fixing plate is fixed on the right side of the bottom surface of the upper die plate, and the fillet cutting upper die cutter is clamped on the upper die fixing plate; the fillet cutting lower die assembly comprises a lower die fixing plate, and the lower die fixing plate is fixed on the right side of the top surface of the lower die plate.

Further, the length adjusting mechanism comprises an upper template length adjusting mechanism and a lower template length adjusting mechanism, the upper template length adjusting mechanism comprises a plurality of upper length positioning blocks and upper tightening bolts, the plurality of upper length positioning blocks are arranged on the bottom surface of the upper template between the upper die base plate and the upper die fixing plate, the upper tightening bolts are fastened on the side surface of the upper template, and the upper die base plate, the plurality of upper length positioning blocks and the upper die fixing plate are fixed from the side surface; the lower template length adjusting mechanism comprises a positioning block assembly, the positioning block assembly comprises a positioning pressing plate, a positioning base plate and a plurality of lower length positioning blocks, a positioning groove is formed in the lower template, and the positioning pressing plate and the positioning base plate are respectively arranged on the upper side and the lower side of the positioning groove of the lower template and are detachably fixed on the lower template; the lower die base backing plate, the lower length positioning blocks and the lower die fixing plate are arranged on the top surface of the lower die plate from left to right, and the lower length positioning blocks are detachably fixed on the lower die plate; and a lower tightening bolt is fastened on the left side surface of the upper template to fix the lower die base cushion plate, the lower length positioning blocks and the lower die fixing plate from the side surface.

Further, the locating block subassembly still includes the locating pin, be provided with the locating hole on the length locating piece, the locating pin set up in the locating hole of length locating piece.

Furthermore, the positioning block assembly further comprises a plurality of long round hole positioning pins, a plurality of positioning holes are formed in the lower die base, and the long round hole positioning pins are respectively arranged in the plurality of positioning holes of the lower die base.

Furthermore, a die handle is pressed in the middle of the top surface of the upper die plate.

Compared with the prior art, the utility model has the beneficial effects that:

the stamping and cutting die disclosed by the utility model is simple and convenient to operate, can adjust the distance between the round guide angle and the long round hole, is suitable for stamping production of a plurality of sets of stamping dies, solves the problems of low efficiency and high cost in the production process of the cold-bending angle steel type pipe hanging frame for the railway freight car chassis, and has the following other advantages:

1. the distance between the round corner cutting lower die assembly and the locating pin of the locating block and the long round hole lower die assembly is adjusted, so that the blanking requirements of auxiliary pieces of the angle steel type underframe with different total lengths, different long round holes and different end distances can be met.

2. The one-time stamping can complete two long round holes and two end part round guide angles simultaneously and has the cutting function, the production efficiency is high, the utilization rate of raw materials is high, and the manufacturability is good.

3. The upper and lower die assemblies of the long circular hole are respectively fixed with the upper and lower die plates in a chute and inclined plane pressing plate connection mode, so that the straight line movement can be ensured in the transverse direction, and the adjustment and the reliable fixation of the distance are facilitated.

4. The length of the fillet cutting lower die assembly is 3 mm-5 mm longer than the width of the raw material, and a transition mode that a straight line and a fillet are tangent is adopted at a fillet at the end part so as to ensure that the fillet can be in smooth transition when the width of the raw material has an error.

Drawings

FIG. 1 is an isometric view of a cold bend angle steel section pipe hanger provided in example 1 of the present invention;

figure 2 is a schematic diagram of a semi-finished product of a cold-bending angle steel type pipe crane in the forming process provided by the embodiment 2 of the utility model,

FIG. 3 is an isometric view of a die-cutting die provided in embodiment 3 of the present invention;

fig. 4 is a front view of a die for press cutting provided in embodiment 3 of the present invention;

fig. 5 is a plan view of a die for press cutting provided in embodiment 3 of the present invention;

fig. 6 is a left side view of a die for press cutting provided in embodiment 3 of the present invention;

fig. 7 is a bottom view of a die for press cutting provided in embodiment 3 of the present invention;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 10 is a cross-sectional view taken along line D-D of FIG. 4;

FIG. 11 is a sectional view taken along line B-B of FIG. 4;

FIG. 12 is a cross-sectional view taken along line E-E of FIG. 4;

FIG. 13 is a schematic diagram of the relationship between the dimensions of the die and the raw material provided in embodiment 3 of the present invention;

figure 14 is a cross-sectional view of a radiused cutting cope knife provided in example 3 of the present invention.

Detailed Description

The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

The utility model discloses a railway freight car underframe accessory, a die and a stamping and cutting die thereof, wherein the railway freight car underframe accessory is a cold bending angle steel section pipe hanger, a sheared steel plate strip or strip steel strip is used as a raw material, the stamping and cutting die is used for stamping two long round holes and round guide corners on the strip material at one time and cutting the long round holes and the round guide corners to form a semi-finished product, and then the semi-finished product is bent and formed into a finished product.

Example 1: cold bending angle steel section pipe hanger as railway wagon underframe accessory

Embodiment 1 provides a railroad freight car underframe accessory, the structure of which is described in detail below.

Referring to fig. 1, the underframe accessory of the railway freight car, commonly known as a "cold bending angle steel type pipe hanger", comprises a horizontal plate part 200 and a vertical plate part 100, wherein the horizontal plate part 200 and the vertical plate part 100 are equal in length, and the horizontal plate part 200 and the vertical plate part 100 are perpendicular to each other and are fixedly connected into a whole through the edge where the length is located;

two angles of the end part of the same side of the horizontal plate part 200 and the vertical plate part 100 are respectively set as fillets 101;

two oblong holes 102 are formed in the vertical plate portion 100 at one end close to the round corner 101 in parallel along the length direction.

In a specific embodiment, the horizontal plate portion 200 and the vertical plate portion 100 are formed by bending the same plate material by a bending machine, and specifically, the underframe accessory of the railway wagon adopts a steel plate strip or a strip steel strip as a raw material.

In another specific embodiment, the horizontal plate portion 200 and the vertical plate portion 100 are integrally formed, and specifically, the underframe accessory of the railway freight car adopts cold-formed angle steel as a raw material.

Example 2: semi-finished product of railway freight car chassis accessory

Embodiment 2 provides a semi-finished product for producing the underframe accessory of the railway wagon in embodiment 1, which is formed by spreading the horizontal plate part 200 and the vertical plate part 100 of the underframe accessory of the railway wagon in embodiment 1 along the common long side to the same plane in the opposite direction, and the structure thereof will be described in detail below.

Referring to fig. 2, the semi-finished product uses a steel plate strip or a steel strip as a raw material, and two corners at two ends of the same side of the semi-finished product are respectively set as fillets 101; two long round holes 102 are arranged in parallel along the length direction at one end of the upper part of the semi-finished product close to the round angle 101.

When the semi-finished product is bent 90 degrees along the length direction of the middle portion to form the horizontal plate portion 200 and the vertical plate portion 100, the horizontal plate portion 200 is formed at the upper portion of the semi-finished product, and the vertical plate portion 100 is formed at the lower portion of the semi-finished product.

Example 3: die set

Embodiment 3 provides a die, which is a stamping and cutting die, and is configured to perform a stamping process on the semi-finished product of embodiment 2 to form two oblong holes 102 in the upper portion of the semi-finished product and perform a trimming process on the semi-finished product to form two rounded corners 101 at two ends of the same side of the semi-finished product, and the structure of the die is described in detail below.

Referring to fig. 4, in conjunction with fig. 3, the die-cutting die includes an upper die plate 11, a lower die plate 21, an oblong hole punching mechanism 1, a round cutting mechanism 2 and a length adjusting mechanism,

the upper template 11 and the lower template 21 are arranged in parallel up and down, the long circular hole punching mechanism 1 and the fillet cutting mechanism 2 are respectively arranged on two sides of the area between the upper template 11 and the lower template 21, and the length adjusting mechanism is arranged between the long circular hole punching mechanism 1 and the fillet cutting mechanism 2.

Two guide sleeves 13 are respectively and fixedly connected to two sides of the rear portion of the bottom surface of the upper template 11, two guide posts 23 are respectively and fixedly connected to two sides of the rear portion of the top surface of the lower template 21, and the two guide sleeves 13 are respectively and movably sleeved on the two guide posts 23 to connect the upper template 11 and the lower template 21 into a whole.

Specifically, two round lugs are respectively arranged on two sides of the rear part of the upper template 11, and two guide sleeves 13 are respectively pressed at the two round lugs of the upper template 11; two round lugs are respectively arranged on two sides of the rear part of the lower die plate 21, and two guide posts 23 are respectively pressed on the two round lugs of the lower die plate 21. The middle part of the top surface of the upper template 11 is pressed with a template handle 12.

With continued reference to fig. 3 and 4, the long circular hole punching mechanism 1 includes a long circular hole upper die assembly 15 and a long circular hole lower die assembly 25, the fillet cutting mechanism 2 includes a fillet cutting upper die assembly 14 and a fillet cutting lower die assembly 24, the fillet cutting upper die assembly 14 and the long circular hole upper die assembly 15 are respectively disposed on the right side and the left side of the bottom surface of the upper die plate 11, the fillet cutting lower die assembly 24 and the long circular hole lower die assembly 25 are respectively disposed on the right side and the left side of the bottom surface of the lower die plate 21, and the fillet cutting lower die assembly 24 and the long circular hole lower die assembly 25 respectively correspond to the fillet cutting upper die assembly 14 and the long circular hole upper die assembly 15.

Referring to fig. 3 to 6, 9 and 12, the upper die assembly for fillet cutting 14 includes an upper die fixing plate 142, an upper die cutter for fillet cutting 141 and a plurality of first bolts 41, the upper die fixing plate 142 is fixed to the right side of the bottom surface of the upper die plate 11 by the plurality of first bolts 41, and rounded corners 1410 are respectively disposed at both ends of the upper die cutter for fillet cutting 141, as shown in fig. 14, and the upper die cutter for fillet cutting 141 is clamped on the upper die fixing plate 142.

Referring to fig. 3 to 6, 8 and 12, the upper slotted die assembly 15 includes an upper die base plate 154, an upper die press plate 155, an upper die base 152, two upper slotted die punches 151, an upper die base plate 153, second bolts 42 and third bolts 43,

specifically, referring to fig. 8 in combination with fig. 3, an upper die cushion plate pressing groove is formed in the left side of the bottom surface of the upper die plate 11, an upper die cushion plate mounting groove is formed in the top surface of the upper die plate 11, and the upper die cushion plate pressing groove is communicated with the left side of the upper die cushion plate mounting groove;

the upper die base plate 154 and the upper die pressing plate 155 are installed side by side in the upper die base plate pressing groove, the upper die base plate 153 is installed in the upper die base plate installing groove, and the upper die base plate 153 and the upper die pressing plate 155 are fastened together by a plurality of second bolts 42.

The upper die holder 152 is fixedly connected with the upper die holder backing plate 154 through a third bolt 43, the upper die holder 152 is provided with two hole grooves, and the two long-circular-hole upper die punches 151 are respectively arranged in the two hole grooves of the upper die holder 152.

The specific installation manner of the connection relationship may be: firstly, two long round hole upper die punches 151 are arranged in two corresponding hole grooves of an upper die base 152, and then the upper die base 152 and an upper die base plate 154 are fastened together through a third bolt 43.

In a preferred embodiment, upper die pad plate 154 and upper platen 155 are fixedly attached and integrally formed.

In another preferred embodiment, the pressing plate groove of the upper die cushion plate is a tapered groove with one side being an inclined surface, the cross section of the upper die cushion plate 154 is trapezoidal, both sides of the upper die cushion plate are inclined surfaces, one side of the upper die pressing plate 155 is an inclined surface, and the two inclined surfaces of the upper die cushion plate 154 are respectively engaged with the inclined surface of the pressing plate groove of the upper die cushion plate and the inclined surface of the upper die pressing plate 155.

Referring to fig. 3 to 7, 9 and 11, the lower fillet cutting die assembly 24 includes a lower die fixing plate 242 and a plurality of fourth bolts 44, the lower die fixing plate 242 is fastened to the right side of the top surface of the lower die plate 21 by the plurality of fourth bolts 44, a fillet cutting upper die cavity 241 is provided on the lower die fixing plate 242, and the fillet cutting upper die cavity 241 and the fillet cutting upper die cutter 141 have the same shape and size and correspond to each other in spatial position.

Referring to fig. 3-7, 8 and 11, oblong lower die assembly 25 includes a lower die plate 254, a lower die platen 255, a lower die plate 252, a lower die plate 253, fifth bolts 45, sixth bolts 46,

a lower die cushion plate mounting groove is formed in the left side of the top surface of the lower die plate 21, and is communicated with the left side of the lower die cushion plate mounting groove;

the lower die base plate 254 and the lower die pressing plate 255 are arranged in the lower die base plate pressing plate groove side by side, the lower die base plate 253 is arranged in the lower die base plate mounting groove, and the lower die base plate 253 and the lower die pressing plate 255 are fastened together through a plurality of fifth bolts 45;

the lower die base 252 is fixedly connected with the lower die base cushion plate 254 through a sixth bolt 46, the lower die base 252 is provided with two slotted hole lower die punching grooves 251, and the two slotted hole upper die punching heads 151 correspond to the two slotted hole lower die punching grooves 251 respectively.

In a preferred embodiment, the lower die plate 254 and the lower platen 255 are fixedly attached to form a unitary body.

In another preferred embodiment, the lower die seat cushion plate pressure plate groove is a tapered groove with a side edge being an inclined surface, the lower die seat cushion plate 254 has a trapezoidal cross section, both side surfaces thereof are inclined surfaces, one side surface of the lower die pressure plate 255 is an inclined surface, and the two inclined surfaces of the lower die seat cushion plate 254 are respectively engaged with the inclined surface of the lower die seat cushion plate pressure plate groove and the inclined surface of the lower die pressure plate 255.

The length adjusting mechanism comprises an upper template length adjusting mechanism and a lower template length adjusting mechanism, wherein the upper template length adjusting mechanism is used for adjusting the distance between the two long-circular-hole upper die punches 151 and the round-corner cutting upper die cutter 141, and the lower template length adjusting mechanism is used for adjusting the distance between the two long-circular-hole upper die punches 151 and the round-corner cutting upper die cutter 141.

A plurality of upper length positioning blocks 17 are disposed on the bottom surface of the upper mold plate 11 between the upper mold base plate 154 and the upper mold fixing plate 142, and specifically, the upper length positioning blocks 17 are fixed on the bottom surface of the upper mold plate 11 by a plurality of seventh bolts 47.

The upper die plate length adjusting mechanism comprises a plurality of upper length positioning blocks 17 and upper tightening bolts 16, and in order to fix the upper die base plate 154, the plurality of upper length positioning blocks 17 and the upper die fixing plate 142 from the side, the upper tightening bolts 16 are fastened on the side surface of the upper die plate 11, and the upper die base plate 154, the plurality of upper length positioning blocks 17 and the upper die fixing plate 142 are fixed from the side surface.

The lower template length adjustment mechanism includes a positioning block assembly 22, with continued reference to fig. 4, 8 and 11, the positioning block assembly 22 includes a positioning pressure plate 223, a positioning backing plate 224, a plurality of eighth bolts 48, a plurality of lower length positioning blocks 27 and a plurality of ninth bolts 49,

the lower mold plate 21 is provided with positioning grooves therein, and the positioning pressing plate 223 and the positioning backing plate 224 are respectively arranged above and below the positioning grooves of the lower mold plate 21 and fixed to the lower mold plate 21 by a plurality of eighth bolts 48, as shown in fig. 10.

The lower die base cushion plate 254, the lower length positioning blocks 27 and the lower die fixing plate 242 are spliced on the top surface of the lower die plate 21 from left to right; and a plurality of lower length positioning blocks 27 are detachably fixed to the lower template 21 by ninth bolts 49, as shown in fig. 11.

In order to fix the lower die base plate 254, the plurality of lower length positioning blocks 27, and the lower die fixing plate 242 from the side, the lower clamp bolt 26 is fastened to the left side surface of the lower die plate 21, and the lower die base plate 254, the plurality of lower length positioning blocks 27, and the lower die fixing plate 242 are fixed from the side.

The positioning block assembly 22 further comprises a positioning pin 222, the length positioning block 27 is provided with a positioning hole, and the positioning pin 222 is press-fitted in the positioning hole of the length positioning block 27 as required.

The positioning block assembly 22 further includes a plurality of long circular hole positioning pins 250, the lower die base 252 is provided with a plurality of positioning holes, and the plurality of long circular hole positioning pins 250 are respectively disposed in the plurality of positioning holes of the lower die base 252. One possible specific mounting manner may be: the lower die base 252 and the lower die base backing plate 254 are fixed together by the sixth bolt 46, and then a plurality of long round hole positioning pins 250 are pressed into a plurality of positioning holes corresponding to the lower die base 252.

The distance between the round corner cutting lower die assembly and the positioning cylinder of the positioning block and the distance between the long round hole lower die assembly are adjusted, so that the blanking requirements of auxiliary pieces of the angle steel type underframe with different total lengths, different long round holes and different end distances can be met. The fillet cuts off lower mould subassembly width and 3mm ~ 5mm than raw and other materials width length, and tip fillet adopts the tangent transition mode of sharp and fillet in addition to guarantee to make bight rounding off when raw and other materials width has the error.

Example 4: use method of stamping and cutting die

Embodiment 4 provides a method for using the die for press cutting of embodiment 3, which mainly includes the following steps:

and (3) adjusting the distance: the distance between the upper template 11 and the lower template 12 is adjusted according to the size of the accessory of the underframe, the two guide sleeves 13 are respectively arranged in the two guide posts 23, and after the gap between each upper template 11 and each lower template 21 is finely adjusted, bolts at each position are fastened for punching production;

blanking: when a steel plate strip or a strip steel strip sequentially passes through the long circular hole punching mechanism 1, the length adjusting mechanism and the fillet cutting mechanism 2, the two long circular hole upper die punch heads 151 impact the strip and fall into the two long circular hole lower die punching grooves 251 to form two long circular holes 102 on the strip, the fillet cutting upper die cutter 141 cuts the strip and falls into the fillet cutting upper die groove 241, and two fillets 101 at two ends of the same side are formed on the strip.

The main steps in die adjustment are as follows:

adjusting the distance between the positioning cylinder of the positioning block and the left side of the fillet cutting lower die assembly to be equal to the distance between the left side of the long circular hole and the end part of the chassis accessory;

adjusting the distance between the left positioning cylinder of the long round hole lower die assembly and the positioning cylinder of the positioning block to the sum of the total length of the underframe accessory and the thickness of the fillet cutting lower die assembly;

then adjusting the gap between the upper long circular hole die and the lower long circular hole die assembly corresponding to the upper die device;

and finally, fixing the positioning block, the upper and lower dies of the long round hole and the upper and lower templates into a whole by using a plurality of adjusting blocks, a pressing plate and bolts.

The main steps in the stamping production of the underframe accessories are as follows:

firstly, placing a steel plate raw material on a lower long circular hole die assembly from the left end, enabling one side of the steel plate raw material to be attached to a positioning point, and enabling the right side of the steel plate raw material to extend out for a certain distance, and punching two long circular holes on the steel plate;

continuously moving the steel plate raw material to the right, sleeving the left long circular hole outside the positioning cylinder of the positioning block, enabling the left end of the long circular hole to be attached to the positioning cylinder, punching to form a second group of long circular holes, simultaneously cutting off redundant steel plate material on the right side of the first group of long circular holes, and leaving two circular guide angles at the end part;

by repeating the punching operation, two long round holes and two end part round guide angles can be punched at one time and cut off simultaneously.

The component adjustment and working process of the utility model is as follows:

the cold bending angle steel type pipe hanger disclosed by the utility model is shown in figure 1, and a semi-finished product of an unfolded part is shown in figure 2, and is bent to form an angle steel type underframe accessory finished product. The cold bending angle steel type pipe hanger has the same section size, and only the length size c and the distance b between the two long circular holes and the end part are combined differently, so that the cold bending angle steel type pipe hanger with various sizes is provided. In order to adapt to the production of cold-bending angle steel type pipe hangers with various sizes, the adjustment needs to be carried out according to the actual size of the cold-bending angle steel type pipe hanger before stamping production, so that the distance between the center of the positioning pin 222 of the positioning block assembly 22 and the left side of the fillet cutting lower die assembly 24 is equal to the size b of the cold-bending angle steel type pipe hanger. The distance L between the center of the left long circular hole of the long circular hole lower die assembly 25 and the center of the positioning pin 222 of the positioning block assembly 22 is adjusted to be the sum of the size c of the underframe accessories and the opening width K of the cutting lower die 24. After the size is adjusted, the spare part in the pressure plate groove of the lower die base cushion plate of the lower die plate is additionally arranged, and a plurality of lower length positioning blocks 27 are fixed by bolts so as to ensure that the transverse distance between the positioning block assembly 22 and the long circular hole lower die assembly 25 and the lower die plate 21 is reliably fixed and is clamped by a transverse lower tightening bolt 26. After the gap between the upper long hole die assembly 15 and the lower die 25 is adjusted to be proper, the upper long hole die assembly is fixed with the transverse distance from the upper die plate 11 and clamped by a transverse lower tightening bolt 26.

When the underframe accessory unfolding piece is produced by punching, referring to fig. 13, a raw material steel plate strip is put on the long circular hole lower die assembly 25 from the left end, the right end of the steel plate strip is firstly formed into a plurality of long distances larger than b + K through the long circular hole lower die assembly 25, the rear end of the steel plate strip is attached to the long circular hole positioning pin 250, and two long circular holes are punched. In the second step, the long round hole punched for the first time is sleeved in the positioning pin 222 of the positioning block 22 and attached to the left side of the hole, the rear side of the long round hole is attached to the long round hole positioning pin 250, a second group of long round holes are punched, and redundant raw materials at the right end are cut to be uniform and two round guide angles are punched. Repeating the second step can produce one product for each punching.

Since the width H of the base material of the underframe accessory extension piece has a certain dimensional error, the width H of the pass of the fillet cutting lower die assembly 24 is preferably set to H +3mm to 5 mm. In order to ensure the size of the fillet R and adapt to the change of the width size h of the raw material, the arc tangent line W is in transitional connection with the corner.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims

1. A mold, characterized by comprising

The long round hole punching mechanism (1) comprises two long round hole upper die punching heads (151) and a lower die base (252), wherein the lower die base (252) is provided with two long round hole lower die punching grooves (251), and the two long round hole upper die punching heads (151) correspond to the two long round hole lower die punching grooves (251) respectively;

the fillet cutting mechanism (2) comprises a fillet cutting upper die cutter (141) and a lower die fixing plate (242), both ends of the fillet cutting upper die cutter (141) are respectively provided with a round conduction angle (1410), the lower die fixing plate (242) is provided with a fillet cutting upper die cavity (241), and the fillet cutting upper die cavity (241) and the fillet cutting upper die cutter (141) have the same shape and size and correspond to each other in spatial position;

the length adjusting mechanism is used for adjusting the distance between the long round hole punching mechanism (1) and the fillet cutting mechanism (2), and comprises a plurality of upper length positioning blocks (17) and a plurality of lower length positioning blocks (27), wherein the plurality of upper length positioning blocks (17) are spliced between the long round hole upper die punch head (151) and the fillet cutting upper die cutter (141), and the plurality of lower length positioning blocks (27) are spliced between the lower die base (252) and the lower die fixing plate (242);

when steel sheet strip or belted steel strip walk in proper order in slotted hole punching press mechanism (1) length adjustment mechanism with during fillet shutdown mechanism (2), mould drift (151) are gone up in two slotted holes impact the strip and fall into two slotted hole lower mould die-punching grooves (251), form two slotted holes (102) on the strip, the fillet is cut off in mould sword (141) cutting strip and fall into the fillet and cut off mould groove (241), form two fillets (101) with one side both ends on the strip.

2. The mold according to claim 1, further comprising an upper mold plate (11) and a lower mold plate (21),

the upper template (11) and the lower template (21) are arranged in parallel up and down, two guide sleeves (13) are respectively and fixedly connected to two sides of the bottom surface of the upper template (11), two guide posts (23) are respectively and fixedly connected to two sides of the top surface of the lower template (21), and the two guide sleeves (13) are respectively and movably sleeved on the two guide posts (23) to connect the upper template (11) and the lower template (21) into a whole;

the long round hole punching mechanism (1) and the round corner cutting mechanism (2) are respectively arranged on two sides of the area between the upper template (11) and the lower template (21);

the two slotted hole upper die punches (151) are fixedly connected to the bottom surface of the upper die plate (11), the lower die base (252) is fixedly connected to the top surface of the lower die plate (21), the round corner cutting upper die cutter (141) is fixedly connected to the bottom surface of the upper die plate (11), and the lower die fixing plate (242) is fixedly connected to the top surface of the lower die plate (21).

3. The mold of claim 2,

the long round hole punching mechanism (1) comprises a long round hole upper die assembly (15) and a long round hole lower die assembly (25),

the long round hole upper die assembly (15) comprises an upper die base plate (154), an upper die pressing plate (155), an upper die base (152), two long round hole upper die punches (151) and an upper die base plate (153),

an upper die cushion plate mounting groove is formed in the left side of the bottom surface of the upper die plate (11), an upper die cushion plate mounting groove is formed in the top surface of the upper die plate (11), and the upper die cushion plate mounting groove is communicated with the left side of the upper die cushion plate mounting groove;

the upper die base plate (154) and the upper die pressing plate (155) are arranged in the upper die base plate pressing plate groove side by side, the upper die base plate (153) is arranged in the upper die base plate mounting groove, and the upper die base plate (153) and the upper die pressing plate (155) are fixedly connected;

the upper die holder (152) is fixedly connected with the upper die holder base plate (154), the upper die holder (152) is provided with two hole grooves, and the two long round hole upper die punches (151) are respectively arranged in the two hole grooves of the upper die holder (152);

the long round hole lower die assembly (25) comprises a lower die base backing plate (254), a lower die pressing plate (255), a lower die base (252) and a lower die backing plate (253),

a lower die cushion plate mounting groove is formed in the left side of the top surface of the lower template (21), a lower die cushion plate mounting groove is formed in the bottom surface of the lower template (21), and the lower die cushion plate pressing groove is communicated with the left side of the lower die cushion plate mounting groove;

the lower die base plate (254) and the lower die pressing plate (255) are arranged in the lower die base plate pressing plate groove side by side, the lower die base plate (253) is arranged in the lower die base plate mounting groove, and the lower die base plate (253) and the lower die pressing plate (255) are fixedly connected;

the lower die base (252) is fixedly connected with the lower die base cushion plate (254), the lower die base (252) is provided with two long circular hole lower die punching grooves (251), and the two long circular hole upper die punching heads (151) correspond to the two long circular hole lower die punching grooves (251) respectively.

4. The mold of claim 3,

the upper die seat cushion plate pressing groove is a chute with one inclined side, the section of the upper die seat cushion plate (154) is trapezoidal, the two side surfaces of the upper die seat cushion plate are inclined surfaces, one side surface of the upper die pressing plate (155) is an inclined surface, and the two inclined surfaces of the upper die seat cushion plate (154) are respectively matched with the inclined surface of the upper die seat cushion plate pressing groove and the inclined surface of the upper die pressing plate (155);

the lower die seat cushion plate pressing groove is a chute with one side edge being an inclined plane, the cross section of the lower die seat cushion plate (254) is trapezoidal, two side surfaces of the lower die seat cushion plate are inclined planes, one side surface of the lower die pressing plate (255) is an inclined plane, and the two inclined planes of the lower die seat cushion plate (254) are respectively matched with the inclined plane of the lower die seat cushion plate pressing groove and the inclined plane of the lower die pressing plate (255).

5. The mold of claim 2,

the fillet cutting mechanism (2) comprises a fillet cutting upper die assembly (14) and a fillet cutting lower die assembly (24),

the fillet cutting upper die assembly (14) comprises an upper die fixing plate (142) and a fillet cutting upper die cutter (141), the upper die fixing plate (142) is fixed on the right side of the bottom surface of the upper die plate (11), and the fillet cutting upper die cutter (141) is clamped on the upper die fixing plate (142);

the fillet cutting lower die assembly (24) comprises a lower die fixing plate (242), and the lower die fixing plate (242) is fixed on the right side of the top surface of the lower die plate (21).

6. The mold of claim 2,

the length adjusting mechanism comprises an upper template length adjusting mechanism and a lower template length adjusting mechanism,

the upper template length adjusting mechanism comprises a plurality of upper length positioning blocks (17) and upper tightening bolts (16), the plurality of upper length positioning blocks (17) are arranged on the bottom surface of the upper template (11) between an upper template base plate (154) and an upper template fixing plate (142), the upper tightening bolts (16) are fastened on the side surface of the upper template (11), and the upper template base plate (154), the plurality of upper length positioning blocks (17) and the upper template fixing plate (142) are fixed from the side surface;

the lower template length adjusting mechanism comprises a positioning block assembly (22), the positioning block assembly (22) comprises a positioning pressure plate (223), a positioning base plate (224) and a plurality of lower length positioning blocks (27),

a positioning groove is formed in the lower template (21), and the positioning pressing plate (223) and the positioning backing plate (224) are respectively arranged on the upper side and the lower side of the positioning groove of the lower template (21) and are detachably fixed on the lower template (21);

the lower die base cushion plate (254), the lower length positioning blocks (27) and the lower die fixing plate (242) are arranged on the top surface of the lower die plate (21) from left to right, and the lower length positioning blocks (27) are detachably fixed on the lower die plate (21);

and a lower fastening bolt (26) is fastened on the left side surface of the upper template (11) to fix the lower die base cushion plate (254), the lower length positioning blocks (27) and the lower die fixing plate (242) from the side.

7. The mold according to claim 6, wherein the positioning block assembly (22) further comprises a positioning pin (222), the length positioning block (27) is provided with a positioning hole, and the positioning pin (222) is arranged in the positioning hole of the length positioning block (27).

8. The mold according to claim 6, wherein the positioning block assembly (22) further comprises a plurality of slotted hole positioning pins (250), the lower mold base (252) is provided with a plurality of positioning holes, and the plurality of slotted hole positioning pins (250) are respectively arranged in the plurality of positioning holes of the lower mold base (252).

9. The mold of claim 2,

and a die handle (12) is pressed in the middle of the top surface of the upper die plate (11).