CN113523105A

CN113523105A - Progressive die for forming C-shaped oblate

Info

Publication number: CN113523105A
Application number: CN202110682873.5A
Authority: CN
Inventors: 袁石华; 何柏林; 王鑫; 何晓溪; 史文亮
Original assignee: General Casting And Forging Branch Of Dongfeng Auto Parts Group Co ltd
Current assignee: General Casting And Forging Branch Of Dongfeng Auto Parts Group Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-10-22
Anticipated expiration: 2041-06-17
Also published as: CN113523105B

Abstract

The invention discloses a progressive die for forming a C-shaped oblate, which comprises an upper die plate and a lower die plate, wherein a strip punching mechanism for processing a coil material into a strip-shaped wire material, a oblate rolling mechanism for processing the strip-shaped wire material into the C-shaped oblate and an off-line leveling mechanism for leveling off the off-line of the C-shaped oblate are sequentially arranged between the upper die plate and the lower die plate from top to bottom. Compared with the prior art, the method for processing the coiled material has the advantages of high material utilization rate, good quality of the formed C-shaped oblate and high processing efficiency, and can obviously reduce the processing cost compared with the flat wire in the prior art.

Description

Progressive die for forming C-shaped oblate

Technical Field

The invention discloses a progressive die, belongs to the technical field of stamping dies, and particularly discloses a progressive die for forming a C-shaped oblate.

Background

At present, a lot of opening products such as check rings, collar oblate circles and the like are mostly produced by adopting coil materials or flat wire materials, if the coil materials are adopted for stamping and forming the opening products such as the check rings, the collar oblate circles and the like, as shown in Chinese utility model patent CN208033457U, the material utilization rate is only about 17% to 25%, so the technical problem of low material utilization rate exists; if an operator processes opening products such as check rings, collar oblate circles and the like one by one through a machine tool by adopting a flat wire material, the hardness of the flat wire material is high about HRC35, great difficulty is brought to stamping, rolling and leveling, the cost of the material needing tempering is higher, meanwhile, the flat wire material is more than 1.5 times of that of a coil stock, the processing efficiency is low, the technical problems that the technical requirements of products cannot be met, and the processing cost cannot be reduced exist.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides the progressive die for forming the C-shaped oblate, which has the advantages of high material utilization rate, good quality of the formed C-shaped oblate and high processing efficiency compared with a coil processing mode in the prior art, and can obviously reduce the processing cost compared with a flat wire in the prior art.

The invention discloses a progressive die for forming a C-shaped oblate, which comprises an upper die plate and a lower die plate, wherein a strip punching mechanism for processing a coil material into a strip-shaped wire material, a oblate rolling mechanism for processing the strip-shaped wire material into the C-shaped oblate and an off-line leveling mechanism for leveling off the off-line of the C-shaped oblate are sequentially arranged between the upper die plate and the lower die plate from top to bottom.

In a preferred embodiment of the present invention, the strip punching mechanism includes an upper punching assembly disposed on the upper die plate and a lower punching assembly disposed on the lower die plate, the upper punching assembly includes a punch for punching a coil and a punching male die for punching the coil into a strip-shaped wire, the lower punching assembly includes a punching female die for cooperating with the punch and a punching female die for cooperating with the punching male die, and the punching female die is provided with a punching through hole for cooperating with the punching male die to form the strip-shaped wire and enabling the strip-shaped wire to fall into the rolling oblate mechanism.

In a preferred embodiment of the present invention, the upper punching component includes a backing plate for connecting an upper die plate, a fixing plate for connecting a punch and a punching male die, and a pressing plate for positioning a coil, which are sequentially arranged from top to bottom, the backing plate and the pressing plate are fixedly connected through a hook plate, the fixing plate is fixedly connected with the punch and the punching male die, the punch is located at an upstream of the punching male die along a coil feeding direction, the pressing plate is provided with a punch through hole and a punching male die through hole, and a punching protective sleeve is arranged at a lower end of the pressing plate.

In a preferred embodiment of the present invention, the lower punching component includes a female die fixing plate, the female die for punching and the punching female die are provided on the female die fixing plate, a floating block for ensuring levelness of the coil during conveying, a side limiting block for limiting the coil left and right in a direction perpendicular to a feeding direction of the coil, and an end stop block for limiting the coil in the feeding direction of the coil are further provided on the female die fixing plate, and the floating block, the female die for punching, the side limiting block, the punching female die, and the end stop block are sequentially arranged in the feeding direction of the coil.

In a preferred embodiment of the invention, each buoyancy block is provided with a groove corresponding to the thickness of the web.

In a preferred embodiment of the present invention, the flatting mechanism includes a lower substrate, a pre-pressing mechanism arranged along a feeding direction of the coil material for pressing the strip-shaped wire material into a U-shaped flatting circle and a forming mechanism arranged along a direction perpendicular to the feeding direction of the coil material for pressing the U-shaped flatting circle into a C-shaped flatting circle are disposed on the lower substrate, and a positioning groove for bearing and positioning the strip-shaped wire material and a guiding blanking hole for blanking the formed C-shaped flatting circle to the leveling off-line mechanism are disposed on the lower substrate.

In a preferred embodiment of the present invention, the prepressing mechanism includes a U-shaped flat round rolling female die fixedly disposed on the lower substrate and a U-shaped flat round rolling male die movably disposed on the lower substrate along a material feeding direction, the forming mechanism includes a pair of C-shaped flat round rolling female dies capable of approaching or deviating from the U-shaped flat round rolling male die along a direction perpendicular to the material feeding direction, and the U-shaped flat round rolling male die and the C-shaped flat round rolling female die are driven by an inclined plane driving component and an elastic component in a matching manner.

In a preferred embodiment of the invention, the bevel driving assembly comprises a push rod for connecting the rolled U-shaped oblate male die or the rolled C-shaped oblate female die and a beveler for connecting an upper template, wherein the push rod is matched with the beveler in a bevel way; the elastic component comprises a spring for resetting the U-shaped flat round rolling male die and the C-shaped flat round rolling female die.

In a preferred embodiment of the invention, the leveling downlead mechanism comprises a conveying track arranged along the coil feeding direction and a leveling male die connected to the upper die plate for leveling the C-shaped oblate.

In a preferred embodiment of the invention, a guide pillar and guide sleeve mechanism for ensuring vertical stamping is arranged between the upper template and the lower template.

The invention has the beneficial effects that: the invention has simple structure, low cost and high universality, integrates the advantages of forming C-shaped oblate based on coil stock and flat wire stock in the prior art through a continuous die structure designed by a three-layer structure from top to bottom, feeds the coil stock into a die area through a feeder to punch and die cut the required flat wire stock (a first layer) and press the flat wire stock into a second layer to roll the C-shaped oblate, finishes the rolling of the rolled C-shaped oblate by an upper die and a C-shaped oblate convex die to bring the rolled C-shaped oblate back to the position to be rolled and fall into a third layer of guide groove, and feeds the flat wire stock into a oblate leveling area for leveling by a pneumatic device according to a certain distance, finishes the completion of subsequent machining of blanks, adopts the continuous die structure from top to bottom in a breakthrough manner, greatly saves space and improves the machining efficiency; furthermore, the strip mechanism is designed into a split structure of an upper punching assembly and a lower punching assembly, so that the structure is simple, the punching precision is high, and the stability is high; furthermore, the upper punching component is designed into a combined structure of the backing plate, the fixing plate and the material pressing plate, so that the assembly and replacement are facilitated; furthermore, the floating block, the side limiting block and the end stop block are additionally arranged on the lower punching component, so that the position precision of the coiled material is effectively ensured, and the rate of finished products of strip-shaped wire materials is improved; furthermore, the floating block can effectively ensure the parallelism of the coil stock; furthermore, the rolling oblate mechanism adopted by the invention comprises a prepressing mechanism and a forming mechanism, and the strip-shaped wire material is processed into the U-shaped oblate firstly, and then the U-shaped oblate is processed into the C-shaped oblate, so that the strength requirement of the oblate male die can be reduced, and the pulling crack of the bent part caused by the one-time forming of the C-shaped oblate can be effectively avoided; furthermore, the prepressing mechanism and the forming mechanism of the invention share one U-shaped oblate male die, thus effectively reducing the processing and manufacturing cost of the die; furthermore, the inclined plane driving assembly and the elastic assembly are adopted to drive the pre-pressing mechanism and the forming mechanism, and the forming of the C-shaped oblate can be realized only by controlling the stroke of the upper template without adding any other additional driving equipment; furthermore, the leveling offline mechanism can effectively ensure the parallelism of the C-shaped oblate and realize automatic blanking; furthermore, the guide pillar and guide sleeve mechanism is additionally arranged between the upper template and the lower template, so that the yield of the C-shaped oblate is ensured.

Drawings

FIG. 1 is a front view of a prior art process for stamping a C-shaped oblate from a coil stock;

FIG. 2 is a top view of a prior art process for stamping a C-shaped oblate from a coil stock;

FIG. 3 is a schematic view of a blank for forming a C-shaped oblate of the present invention;

FIG. 4 is a schematic view of a progressive die for forming C-shaped oblate circles of the present invention (open die);

FIG. 5 is a schematic view of a progressive die for forming C-shaped oblate circles of the present invention (closed die);

FIG. 6 is a schematic view of an upper die plate of a progressive die for forming C-shaped oblate circles of the present invention;

FIG. 7 is a bottom view of an upper plate of a progressive die for forming C-shaped oblate circles of the present invention;

FIG. 8 is a cross-sectional view of an upper die plate of a progressive die for forming C-shaped oblate circles of the present invention;

FIG. 9 is a schematic view of an upper die cutting assembly of a progressive die for forming C-shaped oblate circles in accordance with the present invention;

FIG. 10 is an exploded view of an upper punch assembly of a progressive die for forming C-shaped oblate circular shapes in accordance with the present invention;

FIG. 11 is a schematic view of the lower platen of a progressive die of the present invention for forming C-shaped oblate;

FIG. 12 is a schematic view of a lower punch assembly of a progressive die for forming C-shaped oblate circles of the present invention;

FIG. 13 is an exploded view of a lower punch assembly of a progressive die for forming C-shaped oblate circular shapes in accordance with the present invention;

FIG. 14 is a schematic view of a strip-punching mechanism of a progressive die for forming C-shaped oblate circles of the present invention;

FIG. 15 is a schematic view of a rolling oblate mechanism of a progressive die of the present invention for forming C-shaped oblate;

FIG. 16 is a top view of a rolling oblate mechanism of a progressive die of the present invention for forming C-shaped oblate;

FIG. 17 is an exploded view of a roll oblate mechanism of a progressive die of the present invention for forming C-shaped oblate;

FIG. 18 is a schematic view of a leveling offline mechanism of a progressive die for forming C-shaped oblate rings in accordance with the present invention;

FIG. 19 is an exploded view of a leveling downlead mechanism of a progressive die for forming C-shaped oblate donuts in accordance with the present invention;

FIG. 20 is a cross-sectional view of a leveling offline mechanism of a progressive die for forming C-shaped oblate rings in accordance with the present invention;

FIG. 21 is a schematic view of a leveling male die of the present invention for use with a progressive die for forming C-shaped oblate;

FIG. 22 is a schematic view of the lower platen of a progressive die of the present invention for forming C-shaped oblate.

Detailed Description

The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings and by way of illustration of some alternative embodiments of the invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Preferably, towards strip material mechanism including set up in go up on the cope match-plate pattern cut the subassembly with set up in down cut the subassembly on the lower bolster, go up cut the subassembly including being used for to the drift that the coil stock punches a hole with be used for with the coil stock die-cut for the die-cut terrace die of bar wire material, down cut the subassembly including be used for with drift complex die and be used for with die-cut terrace die complex die-cut die, be provided with on the die-cut die with the bar wire material that takes shape is gone up in the die-cut terrace die cooperation and can make the bar wire material fall into the die-cut through-hole of rolling oblate mechanism.

Preferably, go up die-cut subassembly including the backing plate that is used for connecting the cope match-plate pattern, the pressure flitch that is used for connecting the fixed plate of drift and die-cut terrace die and is used for fixing a position the coil stock that from top to bottom arranges in proper order, the backing plate with pressure flitch passes through the hook plate rigid coupling, the rigid coupling has on the fixed plate the drift with the die-cut terrace die, the drift is located the upper reaches of the edge coil stock pay-off direction of die-cut terrace die, be provided with drift via hole, die-cut terrace die via hole on the pressure flitch, the lower extreme of pressure flitch is provided with the protective sheath that punches a hole.

Preferably, die-cut subassembly includes die holder plate down, be provided with on the die holder plate punch a hole the die with die-cut die, still be provided with on the die holder plate and be used for guaranteeing the coil stock when carrying the buoyancy of levelness and rise the piece, be used for along the side spacing piece of spacing coil stock about the direction of perpendicular to coil stock pay-off direction and be used for along the end dog of the spacing coil stock of coil stock pay-off direction, the buoyancy rises the piece the die punches a hole the side spacing piece die-cut die with the end dog is arranged in proper order along the pay-off direction of coil stock.

Preferably, each buoyancy block is provided with a groove corresponding to the thickness of the coil.

Preferably, roll up oblate mechanism and include the infrabasal plate, be provided with on the infrabasal plate along the coil stock direction of feeding arrange be used for with bar wire material stamping U-shaped oblate's prepressing mechanism and along the perpendicular to coil stock direction of feeding arrange be used for with U-shaped oblate stamping C-shaped oblate's forming mechanism, be provided with on the infrabasal plate and be used for bearing the constant head tank of location bar wire material and be used for the direction blanking hole of C-shaped oblate blanking to levelling off-line mechanism after shaping.

Preferably, the prepressing mechanism comprises a rolling U-shaped oblate female die fixedly arranged on the lower substrate and a rolling U-shaped oblate male die capable of moving along the feeding direction of the coil materials, the forming mechanism comprises a pair of rolling C-shaped oblate female dies capable of moving along the feeding direction of the coil materials perpendicular to the feeding direction of the coil materials and being close to or deviating from the rolling U-shaped oblate male dies, and the rolling U-shaped oblate male dies and the rolling C-shaped oblate female dies are driven by an inclined plane driving assembly and an elastic assembly in a matched mode.

Preferably, the inclined plane driving assembly comprises a push rod and an inclinator, the push rod is used for connecting the U-shaped oblate male die or the C-shaped oblate female die, the inclinator is used for connecting the upper template, and the push rod is matched with the inclinator in an inclined plane; the elastic component comprises a spring for resetting the U-shaped flat round rolling male die and the C-shaped flat round rolling female die.

Preferably, the leveling lower line mechanism comprises a conveying track arranged along the coil feeding direction and a leveling male die connected to the upper die plate and used for leveling the C-shaped oblate.

Preferably, a guide post and guide sleeve mechanism for ensuring vertical stamping is arranged between the upper template and the lower template.

The invention is further explained with reference to the accompanying drawings, as shown in fig. 3, the 65Mn coil stock is adopted as the coil stock of the invention, and after the 65Mn coil stock is punched to obtain the required C-shaped oblate, the C-shaped oblate is a blank for processing opening products such as check rings, collar oblate and the like, thereby solving the problem that the coil stock adopted by the traditional processing equipment is processed into fig. 1, greatly reducing the stamping waste and lowering the cost.

The coil stock passes through the mould of attached figure 4-5 and accomplishes one set of processing modulus of continuity of rolling up the oblate, including last mould 1, lower mould 2, coil stock 3, the C shape oblate of processing completion, and this modulus of continuity structure comprises the triplex from top to bottom, is respectively: an upper die portion, a lower die portion, and a support portion.

The upper die part is shown in attached figures 6-8 and comprises an upper die plate 1-1, four guide sleeves 1-2 connected with the lower die, two longitudinal slants 1-3 used for stamping a U-shaped oblate into a C-shaped oblate and one transverse slant 1-3 used for stamping a strip-shaped wire into a U-shaped oblate, wherein the transverse direction refers to the direction along the coil conveying direction, and the longitudinal direction refers to the direction perpendicular to the coil conveying direction.

As shown in the attached drawings 9-10, the upper punching component comprises a base plate 1-6, a fixing plate 1-7 and a pressure plate 1-18, the base plate 1-6 and the pressure plate 1-18 are connected through hook plates 1-16 on two sides, the fixing plate 1-7 is fixedly clamped between the base plate 1-6 and the pressure plate 1-18 and fixedly connected with the hook plates 1-16 through fixing screws 17, four inner guide posts 1-15 are connected at four corners of the base plate 1-6, the fixing plate 1-7 and the pressure plate 1-18, two punches 1-8 for punching are arranged between the fixing plate 1-7 and the pressure plate 1-18, and the punches 1-8 are fixed on the fixing plate 1-7 through two punch fixing blocks 1-9 and four screws; two ejector pins 1-15, two springs 1-14 and two ejector screws 1-13 are arranged in the punching male die 2-11, the punching male die 2-11 is fixedly connected with a fixing plate 1-7, the ejector pins 1-15 press strip-shaped wires 2-27 into a flat rolling area, the pressure plate 1-18 mainly functions to press a coil 3 to facilitate punching and punching of the flat wires, and two punching protective sleeves 1-19 are arranged below the pressure plate 1-18 through four screws 1-12.

The main structure of the lower die part is shown in the attached drawing 11, the main structure comprises a three-layer structure designed from top to bottom, the processing procedures of coil material- > strip wire material- > C-shaped oblate- > leveling blanking are realized, all processed blanks automatically enter the next layer through gravity, blanking is not needed by means of external force, and the part is the core structure of the invention;

the first layer is used for realizing the processing procedure of material- > strip-shaped wire material: the strip material punching mechanism is shown in the attached figures 12-14: the punching die comprises a die fixing plate 2-1, two punching dies 2-2 (adopting an insert structure) and a punching die 2-3 (adopting an insert structure) are fixedly arranged on the die fixing plate 2-1, the two punching dies 2-2 are positioned by positioning pins 2-4, in order to ensure stable and smooth coil feeding, two floating blocks 2-5 and a side limiting block 2-7 are symmetrically arranged on the two sides of the die fixing plate 2-1 in the coil feeding direction respectively, in order to prevent materials from being fed to the punching dies 2-3, two end stopping blocks 2-6 are arranged on the downstream of the punching dies 2-3 to ensure that the materials are not fed to be transited, an inner guide sleeve 2-8 matched with an inner guide pillar 1-15 is arranged on the die fixing plate 2-1, and the guide pillar and guide sleeve structure design can ensure uniform punching clearance, each floating block 2-5 is provided with a limiting groove for upper and lower coil stock, the spacing between the limiting grooves on the two oppositely arranged floating blocks 2-5 corresponds to the width of the coil stock or is slightly larger than the width of the coil stock, and a spring 2-9 is arranged between each floating block 2-5 and the female die fixing plate 2-1.

The second layer is shown in the attached figures 15-17 and is used for realizing the processes of the strip wire material- > C oblate, and it is pointed out that the strip wire material of the invention is firstly processed into the U-shaped oblate and then processed into the C-shaped oblate, namely the processes of the strip wire material- > U-shaped oblate- > C-shaped oblate, the oblate rolling mechanism for realizing the processes comprises two first inclinators 1-3 arranged on the upper template 1-1, one second inclinator 1-4, a U-shaped oblate female die 2-10, two C-shaped oblate female dies 2-12 and a U-shaped oblate male die 2-14, the U-shaped oblate male die 2-14 is matched with the U-shaped oblate female die 2-10 to realize the processes of the strip wire material- > U-shaped oblate, the U-shaped oblate male die 2-14 is matched with the two C-shaped oblate female dies 2-12 to realize the processes of the U-shaped oblate- > C-shaped oblate, the rolling U-shaped oblate female die 2-10 is fixedly arranged on a lower substrate 2-19, the rolling U-shaped oblate male die 2-14 is connected to the lower substrate 2-19 through a push rod 2-13 in a sliding fit mode, the moving direction of the push rod 2-13 is consistent with the feeding direction of a rolled material, the two rolling C-shaped oblate female dies 2-12 are symmetrically arranged on the left side and the right side of the two rolling C-shaped oblate female dies 2-12, the two rolling C-shaped oblate female dies 2-12 are connected to the lower substrate 2-19 through a longitudinal rolling oblate push rod 2-11 in a sliding fit mode, the moving direction of the longitudinal rolling oblate push rod 2-11 is perpendicular to the feeding direction of the rolled material, and the first inclinator 1-3 and the second inclinator 1-4 are used for driving the longitudinal rolling oblate push rod 2-11 and the push rod 2-13 to move; and the U-shaped oblate male die 2-14 and the roller 2-23 on the connecting slide block 2-20 are used for completing the U-shaped oblate under the action of the second inclinator 1-4 through the push rod 2-13. At the moment, the two first vertical inclinators 1-3 push the push plate 2-29, the vertical rolling flat push rod 2-11 and the rolling C-shaped flat concave die 2-12 to complete the rolling flat task; after the C-shaped oblate is formed, the upward edge rolling mechanism of the upper template 1-1 returns to the pre-rolling oblate position, and the rolled C-shaped oblate 4 enters the third layer of guide groove through the leak hole.

The lower base plate 2-19 is fixedly provided with U-shaped flat round concave dies 2-10, each C-shaped flat round concave die 2-12 is arranged on the lower base plate 2-19 through a longitudinal flat round rolling push rod 2-11, a push plate 2-29, a spring stop block 2-15, a return spring 2-25, a backing plate 2-17 and a push plate left and right slide way 2-26, wherein, the C-shaped flat round female die 2-12 and the push plate 2-29 are inserted and connected through a dovetail groove insertion structure, the backing plate 2-17 is used for installing the left and right slide ways 2-26 of the push plate, the push plate 2-29 and the first inclinator 1-3 are matched to drive the longitudinal flat round rolling push rod 2-11 to displace, when the external force loaded on the push plate 2-29 is eliminated, the reset spring 2-25 pushes the longitudinal rolling oblate push rod 2-11 to reset, so that the C-shaped oblate female die 2-12 is prevented from interfering when the C-shaped oblate 4 falls into the next layer; the U-shaped rolling flat round male die 2-14 is arranged on a lower substrate 2-19 through a push rod 2-13, a connecting slide block 2-20, a pulley 2-23, two reset rods 2-16, two reset springs 2-22, a left slide way 2-18, a right slide way connecting plate 2-24 and a left guide plate 2-16, the moving working principle of the U-shaped rolling flat round male die 2-14 is consistent with the moving working principle of the C-shaped rolling flat round female die 2-12, the U-shaped rolling flat round male die 2-14 works firstly, the C-shaped rolling flat round female die 2-12 works secondly, and the working sequence of the U-shaped rolling flat round male die is determined based on different inclined plane strokes of a first inclinator 1-3 and a second inclinator 1-4; in particular, the blanking holes on the lower substrates 2-19 of the present invention have the same shape as the C-shaped oblate 4, and the blanking holes are provided with a guide boss, the width of which corresponds to the opening width of the C-shaped oblate 4.

The third level is the station for conveying the C-shaped oblate 4 and for leveling the C-shaped oblate 4, the leveling off-line mechanism being shown in figures 18-20 and comprising: 2-30 parts of a push plate cover plate, 2-36 parts of a push plate, 2-37 parts of a cylinder, 2-38 parts of a cylinder supporting plate, 2-31 parts of a limiting pin, 2-32 parts of a left guide plate and a right guide plate, 2-34 parts of an anti-bouncing pressure plate, 2-33 parts of two connecting anti-bouncing pressure plate fixing plates, 2-39 parts of a slide way, 2-35 parts of a leveling C-shaped oblate guide plate, 2-40 parts of a leveling C-shaped oblate fixing plate, 2-41 parts of a leveling C-shaped oblate dome material block, 2-43 parts of a leveling C-shaped oblate cushion block, 2-42 parts of a leveling C-shaped oblate dome material block spring, 2-45 parts of a connecting cylinder, a supporting slide way fixing seat and 2-44 parts of a connecting supporting slide way fixing seat; after the C-shaped oblate 4 falls into the slide ways 2-39 from the second layer, the cylinders 2-37 drive the push plates 2-36 to push the C-shaped oblate 4 to displace, and the upper template 1-1 works to drive the leveling male dies 1-23 shown in the attached figure 7 to level the C-shaped oblate 4 after the C-shaped oblate 4 displaces to level the C-shaped oblate fixing plates 2-40. The C-shaped oblate is sent into a leveling station according to a certain distance through a slide way, and the leveling off-line mechanism can also adopt a conveying device and a leveling device in the prior art.

The attached figure 21 of the invention shows a leveling male die assembly in a leveling off-line mechanism for leveling a C-shaped oblate, wherein the leveling male die assembly comprises fixed cushion blocks 1-21, fixed plates 1-22 and leveling male dies 1-23, the fixed cushion blocks 1-21 are used for connecting an upper template 1-1, the fixed plates 1-22 are used for positioning and installing the leveling male dies 1-23, and the fixed plates 1-22 are fixedly connected with the fixed cushion blocks 1-21.

The support part of the invention is mainly a connecting part of the support of the lower die and the upper die, which is shown in figure 22 and comprises a lower template 2-47, six support pads 2-48, a lower template 2-49 and four clamping die cushion blocks 2-50.

The present invention is not limited to the above embodiments, and any modification, combination, replacement, or improvement made by the spirit and principle of the present invention is included in the protection scope of the present invention.

Claims

1. The utility model provides a progressive die for taking shape C shape oblate, includes cope match-plate pattern and lower bolster, its characterized in that: the upper die plate with from top to bottom has set gradually between the lower bolster be used for with the coil stock processing for the bar wire material towards the strip material mechanism, be used for with the bar wire material processing is the book oblate mechanism of C shape oblate and is used for the levelling to roll off the line the mechanism of rolling off the line of the levelling of C shape oblate.

2. The progressive die for forming C-shaped oblate circles of claim 1 wherein: the strip punching mechanism comprises an upper punching component arranged on the upper die plate and a lower punching component arranged on the lower die plate, the upper punching component comprises a punch used for punching the coil stock and a punching male die used for punching the coil stock into strip-shaped wire stock, the lower punching component comprises a punching female die used for matching with the punch and a punching female die used for matching with the punching male die, and the punching female die is provided with a punching through hole which is matched with the punching male die to form the strip-shaped wire stock and can enable the strip-shaped wire stock to fall into the rolling oblate mechanism.

3. The progressive die for forming C-shaped oblate circles of claim 2 wherein: the subassembly is cut on the upper punch includes the pressure flitch that is used for connecting the backing plate of cope match-plate pattern, is used for connecting the fixed plate of drift and die-cut terrace die and is used for fixing a position the coil stock that from top to bottom arranges in proper order, the backing plate with pressure flitch passes through the hook plate rigid coupling, the rigid coupling has on the fixed plate the drift with the die-cut terrace die, the drift is located the upper reaches of die-cut terrace die along coil stock pay-off direction, be provided with drift via hole, die-cut terrace die via hole on the pressure flitch, the lower extreme of pressure flitch is provided with the protective sheath that punches a hole.

4. The progressive die for forming C-shaped oblate circles of claim 2 wherein: the subassembly is cut to undershoot includes die fixing plate, be provided with on the die fixing plate the die that punches a hole with die-cut die, still be provided with on the die fixing plate and be used for guaranteeing the coil stock when carrying the buoyancy lift piece of levelness, be used for along the side spacing piece of spacing coil stock about the direction of perpendicular to coil stock pay-off direction and be used for along the end dog of the spacing coil stock of coil stock pay-off direction, the buoyancy lift piece the die that punches a hole side spacing piece die-cut die with the end dog is arranged in proper order along the pay-off direction of coil stock.

5. The progressive die for forming C-shaped oblate circles of claim 4 wherein: each floating block is provided with a groove corresponding to the thickness of the coil stock.

6. The progressive die for forming C-shaped oblate circles of claim 1 wherein: roll up oblate mechanism and include the infrabasal plate, be provided with on the infrabasal plate along the coil stock pay-off direction arrange be used for with the bar wire material stamping become U-shaped oblate prepressing mechanism and along the perpendicular to coil stock pay-off direction arrange be used for with the forming mechanism of U-shaped oblate stamping become C-shaped oblate, be provided with the direction blanking hole that is used for bearing the constant head tank of location bar wire material and is used for the C-shaped oblate blanking after will forming on the infrabasal plate.

7. The progressive die for forming C-shaped oblate circles of claim 6 wherein: pre-pressing mechanism including fixed set up in roll up U-shaped oblate die on the infrabasal plate with can follow that coil stock pay-off direction removes set up in roll up U-shaped oblate terrace die on the infrabasal plate, forming mechanism includes that a pair of direction that can follow perpendicular to coil stock pay-off direction is close to or deviates from roll up C-shaped oblate die of U-shaped oblate terrace die, roll up U-shaped oblate terrace die with roll up C-shaped oblate die and all drive through inclined plane drive assembly and elastic component cooperation.

8. The progressive die for forming C-shaped oblate circles of claim 7 wherein: the inclined plane driving assembly comprises a push rod and an inclinator, the push rod is used for connecting a rolled U-shaped oblate male die or a rolled C-shaped oblate female die, the inclinator is used for connecting an upper template, and the push rod is matched with the inclined plane of the inclinator; the elastic component comprises a spring for resetting the U-shaped flat round rolling male die and the C-shaped flat round rolling female die.

9. The progressive die for forming C-shaped oblate circles of claim 1 wherein: the leveling off-line mechanism comprises a conveying track arranged along the coil feeding direction and a leveling male die connected to the upper template and used for leveling the C-shaped oblate.

10. The progressive die for forming C-shaped oblate circles of claim 1 wherein: and a guide post and guide sleeve mechanism used for ensuring vertical stamping is arranged between the upper template and the lower template.