CN219564107U - Windmill blade forming die - Google Patents

Abstract

The utility model discloses a windmill blade forming die which comprises a die body, a traction guiding device for traction of a material belt and at least one stamping forming group, wherein the traction guiding device and the stamping forming group are respectively arranged on the die body, and the stamping forming group corresponds to the traction guiding device in position; the die body comprises an upper die and a lower die; the method is characterized in that: the stamping forming set comprises a shaping assembly, a cutting assembly, at least one clamping part positive pressure assembly and at least one clamping part back pressure assembly, wherein the shaping assembly, the clamping part positive pressure assembly, the clamping part back pressure assembly and the cutting assembly are sequentially arranged from front to back; the material belt sequentially passes through the shaping assembly, the clamping part positive pressure assembly, the clamping part back pressure assembly and the cutting assembly. The windmill blade forming die can cut the windmill blade into pieces, and the clamping part and the cover part of the windmill blade are kept in a mutually perpendicular state, so that the cost is low.

Description

Windmill blade forming die

Technical Field

The utility model relates to a mold, in particular to a windmill blade forming mold.

Background

In the production of micro-motors, it is necessary to assemble the blades, i.e. to clamp them to the ends of the rotor core. The windmill blade is made of insulating materials and is a thin sheet with a certain shape and direction, and the windmill blade generally comprises a cover part and a clamping part, wherein the cover part covers the end face of the rotor core, and the clamping part is inserted into a wire winding groove of the rotor core and is tightly contacted with the side wall of the wire winding groove, so that the clamping part is required to be perpendicular to the cover part during manufacturing, and the clamping part can be tightly clamped on the rotor core during subsequent installation.

However, in the conventional windmill blade punching and shearing device, the upper and lower dies are generally used to directly cut and press down the windmill blade, so that the inner edges of the holes in the outline of the windmill blade are turned upwards to directly form the engaging parts. The full-automatic assembly machine for the windmill blades and the commutators at the two ends of the rotor of the micro-motor disclosed by publication No. CN103956861A and publication No. 2014, 7 and 30 comprises an upper die table, a lower die table, an upper die, a first lower die, a second lower die and an upper die table lifting mechanism, wherein the first lower die and the second lower die are respectively provided with a through hole and a notch facing the center of a turntable; the upper die table, the lower die table and the upper die table lifting mechanism are all arranged on the frame, and the upper die table is connected with the power output end of the upper die table lifting mechanism; the upper die is arranged on the upper die table; the lower die table is provided with a die cavity, a first guide rail and a second guide rail which extend along the radial direction of the turntable are arranged in the die cavity, the first guide rail is positioned in front of the second guide rail, the tail end of the first guide rail corresponds to the lower windmill blade pressing-in station, and the tail end of the second guide rail corresponds to the upper windmill blade pressing-in station; the first lower die is arranged on the first guide rail, the second lower die is arranged on the second guide rail, the lower windmill blade push rod and the upper windmill blade push rod are both positioned in the die cavity, one end of the lower windmill blade push rod is connected with the first lower die, and one end of the upper windmill blade push rod is connected with the second lower die. The windmill blade punching and shearing device adopts a mode of single mold clamping, punches and shears the windmill blade out on a material belt, and simultaneously directly folds the inner edges of all hole sites in the outline of the windmill blade through a windmill blade push rod to form a clamping part. The punching shear mode is high in punching shear speed, however, the mode of folding the clamping part by means of single pressing cannot enable the clamping part to be perpendicular to the cover part, the angle between the clamping part and the cover part is far greater than 90 degrees, even if repeated positive pressure pressing is carried out on the clamping part for many times, the clamping part can only be enabled to be as close to perpendicular as possible, clamping is difficult to achieve during installation, the service life of the rotor is short, and meanwhile, the bending part is easy to break due to fatigue caused by multiple bending. In order to improve the service life of the rotor, there is also a method of directly injection molding the windmill blade by injection molding, which can ensure that the engaging portion is perpendicular to the covering portion, but has high manufacturing cost.

Disclosure of Invention

The utility model aims to provide a windmill blade forming die which can cut a windmill blade and keep the clamping part and the cover part of the windmill blade in a mutually perpendicular state, and has low cost.

In order to solve the technical problems, the technical scheme adopted is as follows:

the windmill blade forming die comprises a die body, a traction guiding device for traction of a material belt and at least one stamping forming group, wherein the traction guiding device and the stamping forming group are respectively arranged on the die body, and the stamping forming group corresponds to the traction guiding device in position; the die body comprises an upper die and a lower die; the method is characterized in that: the stamping forming set comprises a shaping assembly, a cutting assembly, at least one clamping part positive pressure assembly and at least one clamping part back pressure assembly, wherein the shaping assembly, the clamping part positive pressure assembly, the clamping part back pressure assembly and the cutting assembly are sequentially arranged from front to back; the material belt sequentially passes through the shaping assembly, the clamping part positive pressure assembly, the clamping part back pressure assembly and the cutting assembly.

The front-back direction is determined according to the conveying direction of the material belt, and the position where the material belt passes through is the front and the position where the material belt passes through is the back.

When the windmill blade forming die performs windmill blade forming processing, the traction guiding device guides and pulls the conveyed material belt; along with the conveying, the front part of the material belt moves to the position corresponding to the shaping assembly, at the moment, the upper die and the lower die are clamped, the profile of the windmill blade is extruded on the material belt, and a plurality of hole sites are formed at the corresponding positions; then the upper die and the lower die are separated again, the material belt is conveyed backwards to a station, the position of the material belt, which is shaped, is moved to a positive pressure component of a clamping part, at the moment, the upper die and the lower die are clamped, the positive pressure component of the clamping part carries out positive pressure on the outline of the windmill blade from the lower side, the inner edges of all hole positions in the outline of the windmill blade are turned upwards, the clamping part of the outline of the windmill blade is formed preliminarily, and at the moment, the angle between the clamping part and the covering part is larger than 90 degrees; then the upper die and the lower die are separated again, the material belt is conveyed backwards to a station, the position of the material belt, where the positive pressure of the clamping part is completed, is moved to a clamping part back pressure assembly, at the moment, the upper die and the lower die are clamped, and the clamping part back pressure assembly back pressure is carried out on the windmill blade profile from the upper side, so that the clamping part of the windmill blade profile is turned outwards, and the clamping part is vertically erected; and then the upper die and the lower die are separated again, the material belt is conveyed backwards to a station, the position of the material belt for completing the back pressure of the clamping part is moved to a cutting assembly, the upper die and the lower die are clamped at the moment, and the cutting assembly cuts off the outline of the windmill blade to form a complete windmill blade and sends the windmill blade out. The windmill blade forming die can turn over the clamping part from the upper outer side of the clamping part in the opposite direction by arranging the clamping part back pressure assembly, so that the clamping part is not broken, and the clamping part can be ensured to vertically stand.

The inner and outer directions are determined according to the positions of two adjacent clamping parts in the same hole site in the windmill blade, the positions of the two clamping parts close to each other are inner, and the positions of the two clamping parts far away from each other are outer; the vertical direction is determined by the orientation of the engaging portion of the wind turbine blade, and the position of the engaging portion is upward.

In a preferred embodiment, the back pressure assembly of the clamping part includes a plurality of first guide grooves formed in the lower die and a plurality of first top sheet columns formed in the upper die, the first guide grooves and the first top sheet columns are the same in number and correspond to each other one by one, and the first top sheet columns correspond to the middle positions of the corresponding first guide grooves. Generally, each first guide groove is uniformly arranged along the circumferential direction; the upper die is also typically provided with a lift drive mechanism capable of driving the first topsheet column to move up and down. When back pressure is carried out, the first top sheet column stretches into the corresponding hole position from the upper part of the windmill blade outline, and in the stretching process, the clamping part is pushed to be turned outwards from the inner side of the clamping part, so that the clamping part is vertically erected.

In a further preferred scheme, the lower extreme of first top piece post is equipped with the top piece head, and the top piece head is including stretching into portion and back pressure portion, and the upper end of stretching into portion is connected with the lower extreme of back pressure portion, and the lateral wall of stretching into portion and back pressure portion is all inwards inclined from top to bottom gradually to the inclination of stretching into portion lateral wall is greater than the inclination of back pressure portion lateral wall. Through this kind of setting, stretch into the portion and pass in the hole site of windmill blade profile earlier, along with first roof column continues to push down, the block portion can with the lateral wall contact of back pressure portion and turn over the book outwards gradually along the lateral wall of back pressure portion.

In the preferred scheme, the quantity of clamping part malleation subassembly is two, and two clamping part malleation subassemblies set gradually along fore-and-aft direction, and wherein, the clamping part malleation subassembly that is in the place ahead is first malleation subassembly, and the clamping part malleation subassembly that is in the rear is the second malleation subassembly.

In a further preferred aspect, the first positive pressure component includes a plurality of second guide grooves formed in the upper die and a plurality of second top sheet columns formed in the lower die, the second guide grooves and the second top sheet columns are the same in number and in one-to-one correspondence, and the second top sheet columns correspond to intermediate positions of the corresponding second guide grooves. Typically, each second guide groove is uniformly arranged along the circumferential direction; the lower die is also typically provided with a lift drive mechanism capable of driving the second topsheet column to move up and down.

In a further preferred aspect, the second positive pressure component includes a plurality of third guide grooves provided on the upper die and a plurality of third top sheet columns provided on the lower die, the number of the third guide grooves and the third top sheet columns are the same and correspond to each other, and the third top sheet columns correspond to the middle positions of the corresponding third guide grooves; the third guide groove has a size greater than the second guide groove, and the third topsheet post has a size greater than the second topsheet post. Typically, each third guide groove is uniformly arranged along the circumferential direction; the lower die is usually further provided with a lift drive mechanism capable of driving the third top sheet column to move up and down. When the first positive pressure is carried out, the inner edges of all hole sites are upwards turned over by the second top sheet column, and the upwards turned over parts are smaller than the required size of the clamping parts; when the secondary positive pressure is carried out, the inner edges of all hole positions are turned upwards by the third top sheet column, and the upwards turned parts are the required sizes of the clamping parts. According to the required size of the clamping part, the number of times of positive pressure of the clamping part can be selected, and the size of the top sheet column is gradually increased from front to back; because the material belt is made of a harder material, the area of the inner edge of each hole position on the windmill blade, which is turned upwards, is gradually enlarged by adopting a repeated turning mode, so that the size of the upward turning when the windmill blade is turned upwards for the last time can be ensured to be the size required by the clamping part.

Typically, the cross-sectional area of the counter-pressure portion in the first topsheet column is larger than the cross-sectional area of the third topsheet column, which is larger than the cross-sectional area of the extension portion in the first topsheet column.

The number of the first guide grooves, the second guide grooves and the third guide grooves can be set according to the motor rotor which is correspondingly installed on the windmill blade, and the number of the guide grooves and the top sheet column can be set according to the shape of the windmill blade which is required to be formed. The number of the positive pressure components of the clamping part can be set according to the requirement, and the guide grooves and the top sheet columns are sequentially arranged on the upper die and the lower die along the front-back direction according to the number, meanwhile, the size of the guide groove at the back is larger than that of the guide groove at the front, and the size of the top sheet column at the back is larger than that of the top sheet column at the front.

In the preferred scheme, the cutting assembly comprises a through hole and a first cutter, the through hole is formed in the upper die or the lower die along the up-down direction, the first cutter is arranged on the lower die or the upper die, and the first cutter is matched with the through hole in shape and corresponds to the through hole in position. Typically, the through hole and the first cutter match the shape of the blade; the first cutter can be fixedly arranged on the die body, and a lifting driving mechanism capable of driving the first cutter to move up and down can be additionally arranged at the cutting-off assembly. When the lower die and the lower die are used for die pressing, the first cutter cuts off the windmill blade with the folded clamping part and sends out the die body through the through hole.

In a further preferred aspect, the windmill blade molding die further comprises at least one discharging device, the number of the discharging devices is the same as that of the punch forming groups and corresponds to one, and the discharging devices correspond to the positions of the through holes of the cutting assemblies in the corresponding punch forming groups.

In a further preferred scheme, a transverse guide channel communicated with the through hole is arranged in the die body; the discharging device comprises a pushing piece block and a translation driving mechanism capable of driving the pushing piece block to move along the transverse guide channel, the translation driving mechanism is arranged on the die body, and a slide notch is formed in the end portion of the pushing piece block. When the material belt moves from the clamping part back pressure assembly to the cutting assembly, the slide notch on the push piece block corresponds to the position of the through hole; when the windmill blade is cut off, the windmill blade can fall to the slide glass notch of the pushing blade block along the through hole, and then the translation driving mechanism drives the pushing blade block to move to the outside along the transverse guide channel, so that the windmill blade is sent out.

In the preferred scheme, the shaping assembly comprises a second cutter and a plurality of fourth guide grooves, the fourth guide grooves are formed in the upper die or the lower die, the second cutter is arranged on the lower die or the upper die, and the shapes of the second cutter and the fourth guide grooves are matched. Typically, the fourth guide slot has a smaller size than the second guide slot; the second cutter can be fixedly arranged on the die body, and a lifting driving mechanism capable of driving the second cutter to move up and down can be additionally arranged at the cutting-off assembly. When the lower die and the lower die are used for die pressing, the second cutter cuts the profile of the windmill blade on the material belt.

In the preferred scheme, the material belt traction guiding device comprises a plurality of guiding paper clamping groups arranged along the front-back direction, each guiding paper clamping group comprises two guiding paper clamping pieces, and the two guiding paper clamping pieces are respectively arranged on two sides of the stamping forming group. In the specific scheme, the direction presss from both sides paper spare includes fixed block, clamping piece and compression spring, and fixed block fixed mounting is in go up on mould or the lower mould, be equipped with the fifth guide way on the fixed block, the clamping piece includes the clamping piece head and the movable column of being connected with the clamping piece head, and the movable column can set up in the fifth guide way with reciprocating, and compression spring cover is established on the movable column to compression spring's one end and the bottom contact of movable column, compression spring's the other end and the top contact of fifth guide way. When the material belt is conveyed, the edges of the two sides of the material belt are respectively positioned between the fixed block and the clamping piece block, and when the upper die and the lower die are pressed, the clamping piece block is pushed to be pressed down, so that the fixed block and the clamping piece block clamp the material belt together.

The utility model has the beneficial effects that: the windmill blade forming die can cut the windmill blade into pieces, and the clamping part and the cover part of the windmill blade are kept in a mutually perpendicular state, so that the cost is low.

Drawings

FIG. 1 is a schematic diagram of an upper die in an embodiment of the present utility model;

FIG. 2 is a schematic view of another angle of the upper die according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the lower die in an embodiment of the utility model;

FIG. 4 is a schematic view of a first topsheet post according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a wind turbine blade according to an embodiment of the present utility model.

Detailed Description

The utility model is further described with reference to the accompanying drawings and specific embodiments:

the windmill blade forming die comprises a die body, a traction guide device 3 for drawing a material belt and two stamping forming groups 4, wherein the die body comprises an upper die 1 and a lower die 2; the traction guide device 3 and the punch forming group 4 are respectively arranged on the die body, and the punch forming group 4 corresponds to the traction guide device 3 in position; the press forming set 4 comprises a shaping assembly 401, two positive pressure assemblies 402 of clamping parts, a back pressure assembly 403 of clamping parts and a cutting assembly 404, wherein the shaping assembly 401, the positive pressure assemblies 402 of clamping parts, the back pressure assemblies 403 of clamping parts and the cutting assembly 404 are sequentially arranged from front to back; the material tape passes through a shaping assembly 401, a clamping part positive pressure assembly 402, a clamping part back pressure assembly 403 and a cutting assembly 404 in sequence.

The front-back direction is determined according to the conveying direction of the material belt, and the position where the material belt passes through is the front and the position where the material belt passes through is the back.

When the windmill blade forming mold performs windmill blade forming processing, the traction guiding device 3 guides and pulls the conveyed material belt; along with the conveying, the front part of the material belt moves to the position corresponding to the shaping assembly 401, at the moment, the upper die 1 and the lower die 2 are clamped, the outline of the windmill blade is extruded on the material belt, and a plurality of hole sites are formed at the corresponding positions; then the upper die 1 and the lower die 2 are separated again, the material belt is conveyed backwards to a station, the position of the material belt, which is shaped, is moved to the positive pressure component 402 of the clamping part, at the moment, the upper die 1 and the lower die 2 are clamped, the positive pressure component 402 of the clamping part positive pressure carries out positive pressure on the outline of the windmill blade from the lower part, the inner edges of all hole positions in the outline of the windmill blade are turned upwards, the clamping part of the outline of the windmill blade is formed preliminarily, and at the moment, the angle between the clamping part and the cover part is larger than 90 degrees; then the upper die 1 and the lower die 2 are separated again, the material belt is conveyed backwards to a station, the position of the material belt, where positive pressure of the clamping part is completed, is moved to the clamping part back pressure assembly 403, at the moment, the upper die 1 and the lower die 2 are clamped, the clamping part back pressure assembly 403 carries out back pressure on the windmill blade profile from above, the clamping part of the windmill blade profile is turned outwards, and the clamping part is vertically erected; subsequently the upper die 1 and the lower die 2 are separated again, the material strip is fed back to a station, the position of the material strip where the back pressure of the clamping part is completed is moved to the cutting assembly 404, at this time, the upper die 1 and the lower die 2 are clamped, the cutting assembly 404 cuts the profile of the windmill blade to form a complete windmill blade and sends out the windmill blade (the structure of the windmill blade 7 is shown in fig. 5, wherein the clamping part is 701, and the cover part is 702). The windmill blade forming mold can turn over the clamping part from the upper outer side of the clamping part in the opposite direction by arranging the clamping part back pressure assembly 403, so that the clamping part is not broken, and the clamping part can be ensured to vertically stand.

The inner and outer directions are determined according to the positions of two adjacent clamping parts in the same hole site in the windmill blade, the positions of the two clamping parts close to each other are inner, and the positions of the two clamping parts far away from each other are outer; the vertical direction is determined by the orientation of the engaging portion of the wind turbine blade, and the position of the engaging portion is upward.

The clamping part back pressure assembly 403 comprises a plurality of first guide grooves 4031 arranged on the lower die 2 and a plurality of first top sheet columns 4032 arranged on the upper die 1, wherein the first guide grooves 4031 and the first top sheet columns 4032 are the same in number and in one-to-one correspondence, and the first top sheet columns 4032 correspond to the middle positions of the corresponding first guide grooves 4031. Each first guide groove 4031 is uniformly arranged in the circumferential direction; the upper die 1 is further provided with a lift drive mechanism (not visible in the drawing) capable of driving the first top sheet column 4032 to move up and down. When back pressure is carried out, the first top sheet column 4032 stretches into the corresponding hole position from the upper side of the windmill blade outline, and in the stretching process, the clamping part is pushed to be turned outwards from the inner side of the clamping part, so that the clamping part is vertically erected.

The lower end of the first top sheet column 4032 is provided with a top sheet head 40321, the top sheet head 40321 comprises an extending portion 403211 and a back pressure portion 403212, the upper end of the extending portion 403211 is connected with the lower end of the back pressure portion 403212, the side walls of the extending portion 403211 and the back pressure portion 403212 are inclined inwards gradually from top to bottom, and the inclination angle of the side wall of the extending portion 403211 is larger than that of the side wall of the back pressure portion 403212. With this arrangement, the protruding portion 403211 passes through the hole in the profile of the blade, and as the first top sheet column 4032 continues to be pressed down, the engaging portion can contact the side wall of the back pressure portion 403212 and gradually fold outwards along the side wall of the back pressure portion 403212.

The two positive pressure components 402 of the clamping part are sequentially arranged along the front-back direction, wherein the positive pressure component 402 of the clamping part at the front is a first positive pressure component 4021, and the positive pressure component 402 of the clamping part at the back is a second positive pressure component 4022; the first positive pressure assembly 4021 includes a plurality of second guide grooves 40211 provided in the upper die 1 and a plurality of second topsheet posts 40212 provided in the lower die 2, the number of second guide grooves 40211 and second topsheet posts 40212 being the same and in one-to-one correspondence, and the second topsheet posts 40212 corresponding to intermediate positions of the corresponding second guide grooves 40211. Each second guide groove 40211 is uniformly arranged in the circumferential direction; the lower die 2 is further provided with a lift drive mechanism (not visible in the drawing) capable of driving the second topsheet post 40212 to move up and down.

The second positive pressure assembly 4022 includes a plurality of third guide grooves 40221 provided in the upper die 1 and a plurality of third topsheet posts 40222 provided in the lower die 2, the number of third guide grooves 40221 and third topsheet posts 40222 being the same and corresponding one to one, and the third topsheet posts 40222 corresponding to intermediate positions of the corresponding third guide grooves 40221; the third guide groove 40221 is larger in size than the second guide groove 40211 and the third topsheet column 40222 is larger in size than the second topsheet column 40212. Each third guide groove 40221 is uniformly arranged in the circumferential direction; the lower die 2 is further provided with a lift drive mechanism (not visible in the drawing) capable of driving the third top sheet column 40222 to move up and down. During the first positive pressure, the second top sheet column 40212 turns over the inner edge of each hole site upward, and the upward turned-over part is smaller than the required size of the engaging part; when the second positive pressure is applied, the inner edges of the holes are folded upward by the third top sheet column 40222, and the folded upward parts are the required sizes of the engaging parts. According to the required size of the clamping part, the number of times of positive pressure of the clamping part can be selected, and the size of the top sheet column is gradually increased from front to back; because the material belt is made of a harder material, the area of the inner edge of each hole position on the windmill blade, which is turned upwards, is gradually enlarged by adopting a repeated turning mode, so that the size of the upward turning when the windmill blade is turned upwards for the last time can be ensured to be the size required by the clamping part.

The cross-sectional area of the counter-pressure portion 403212 in the first topsheet column 4032 is greater than the cross-sectional area of the third topsheet column 40222 and the cross-sectional area of the third topsheet column 40222 is greater than the cross-sectional area of the protruding portion 403211 in the first topsheet column 4032.

The number of the above-described first, second and third guide grooves 4031, 40211 and 40221 is set to three according to the motor rotor to which the wind blade is correspondingly attached, and the shapes of the guide grooves and the top sheet posts are set according to the shape of the wind blade to be molded.

The cutting assembly 404 includes a through hole 4041 and a first cutter 4042, the through hole 4041 is opened in the up-down direction on the upper die 1, the first cutter 4042 is provided on the lower die 2, and the first cutter 4042 is matched with the through hole 4041 in shape and in position. The through hole 4041 and the first cutter 4042 match the shape of the windmill blade; the first cutter 4042 may be fixedly mounted on the die body, or a lifting driving mechanism capable of driving the first cutter 4042 to move up and down may be added to the cutting assembly 404. When the lower die 2 and the lower die 2 are pressed together, the first cutter 4042 cuts out the windmill blade with the completed snap-fit portion folded over and sends out the die body through the through hole 4041.

The windmill blade forming mold further comprises two discharging devices 5, the number of the discharging devices 5 and the number of the punching forming groups 4 are the same and correspond to each other, and the discharging devices 5 correspond to the positions of the through holes 4041 of the cutting assembly 404 in the corresponding punching forming groups 4.

A transverse guide channel 6 communicated with the through hole 4041 is arranged in the die body; the discharging device 5 comprises a pushing piece 501 and a translation driving mechanism 502 capable of driving the pushing piece 501 to move along the transverse guide channel 6, the translation driving mechanism 502 is arranged on the die body, and a slide gap 5011 is formed at the end part of the pushing piece 501. When the material belt moves from the clamping part back pressure assembly 403 to the cutting assembly 404, the slide notch 5011 on the push piece 501 corresponds to the position of the through hole 4041; when the blade is cut, it can drop down the through hole 4041 to the slide notch 5011 of the blade block 501, and then the translational driving mechanism 502 drives the blade block 501 to move to the outside along the lateral guide channel 6, and the blade is sent out.

The shaping assembly 401 comprises a second cutter 4011 and a plurality of fourth guide grooves 4012, the fourth guide grooves 4012 are formed in the upper die 1, the second cutter 4011 is arranged on the lower die 2, and the shapes of the second cutter 4011 and the fourth guide grooves 4012 are matched. The fourth guide groove 4012 has a smaller size than the second guide groove 40211; the second cutter 4011 may be fixedly installed on the die body, or a lifting driving mechanism capable of driving the second cutter 4011 to move up and down may be additionally provided at the cutting assembly 404. When the lower die 2 and the lower die 2 are pressed, the second cutter 4011 cuts the profile of the blade on the strip.

The web traction guide 3 includes a plurality of guide paper clamping groups 301 arranged in the front-rear direction, the guide paper clamping groups 301 include two guide paper clamping members 3011, and the two guide paper clamping members 3011 are respectively arranged at both sides of the press forming group 4.

The guiding paper clamping piece 3011 comprises a fixed block 30111, a clamping piece 30112 and a compression spring (not visible in the figure), wherein the fixed block 30111 is fixedly arranged on the upper die 1, a fifth guide groove is formed in the fixed block 30111, the clamping piece 30112 comprises a clamping piece head and a movable column connected with the clamping piece head, the movable column is arranged in the fifth guide groove in a vertically movable manner, the compression spring is sleeved on the movable column, one end of the compression spring is contacted with the bottom of the movable column, and the other end of the compression spring is contacted with the top end of the fifth guide groove. When the material belt is conveyed, the edges of the two sides of the material belt are respectively positioned between the fixed block 30111 and the clamping piece 30112, and when the upper die 1 and the lower die 2 are pressed, the clamping piece 30112 is pushed to be pressed down, so that the fixed block 30111 and the clamping piece 30112 clamp the material belt together.

Claims (10)

1. The windmill blade forming die comprises a die body, a traction guiding device for traction of a material belt and at least one stamping forming group, wherein the traction guiding device and the stamping forming group are respectively arranged on the die body, and the stamping forming group corresponds to the traction guiding device in position; the die body comprises an upper die and a lower die; the method is characterized in that: the stamping forming set comprises a shaping assembly, a cutting assembly, at least one clamping part positive pressure assembly and at least one clamping part back pressure assembly, wherein the shaping assembly, the clamping part positive pressure assembly, the clamping part back pressure assembly and the cutting assembly are sequentially arranged from front to back; the material belt sequentially passes through the shaping assembly, the clamping part positive pressure assembly, the clamping part back pressure assembly and the cutting assembly.

2. A wind blade forming die according to claim 1, wherein: the clamping part back pressure assembly comprises a plurality of first guide grooves and a plurality of first top sheet columns, wherein the first guide grooves are formed in the lower die, the first top sheet columns are arranged in the upper die, the first guide grooves and the first top sheet columns are the same in number and correspond to each other one by one, and the first top sheet columns correspond to the middle positions of the corresponding first guide grooves.

3. A wind blade forming die according to claim 2, wherein: the lower extreme of first top piece post is equipped with the top piece head, and the top piece head is including stretching into portion and back pressure portion, and the upper end of stretching into portion is connected with the lower extreme of back pressure portion, and the lateral wall of stretching into portion and back pressure portion is all inwards inclined from last to down gradually to the inclination who stretches into portion lateral wall is greater than the inclination of back pressure portion lateral wall.

4. A wind blade forming die according to claim 1, wherein: the number of the positive pressure components of the clamping part is two, and the positive pressure components of the two clamping parts are sequentially arranged along the front-back direction, wherein the positive pressure component of the clamping part at the front is a first positive pressure component, and the positive pressure component of the clamping part at the rear is a second positive pressure component.

5. A wind blade forming die according to claim 4, wherein: the first positive pressure component comprises a plurality of second guide grooves arranged on the upper die and a plurality of second top sheet columns arranged on the lower die, the number of the second guide grooves is the same as that of the second top sheet columns, the second top sheet columns correspond to the middle positions of the corresponding second guide grooves one by one.

6. A wind blade forming die according to claim 5, wherein: the second positive pressure assembly comprises a plurality of third guide grooves arranged on the upper die and a plurality of third top sheet columns arranged on the lower die, the number of the third guide grooves is the same as that of the third top sheet columns, the third top sheet columns correspond to the middle positions of the corresponding third guide grooves one by one; the third guide groove has a size greater than the second guide groove, and the third topsheet post has a size greater than the second topsheet post.

7. A wind blade forming die according to claim 1, wherein: the cutting assembly comprises a through hole and a first cutter, the through hole is formed in the upper die or the lower die along the up-down direction, the first cutter is arranged on the lower die or the upper die, and the first cutter is matched with the through hole in shape and corresponds to the through hole in position.

8. A wind blade forming die according to claim 7, wherein: the windmill blade forming die further comprises at least one discharging device, the number of the discharging devices is the same as that of the punching forming groups and corresponds to that of the through holes of the cutting assembly in the corresponding punching forming groups one by one.

9. A wind blade forming die according to claim 8, wherein: a transverse guide channel communicated with the through hole is arranged in the die body; the discharging device comprises a pushing piece block and a translation driving mechanism capable of driving the pushing piece block to move along the transverse guide channel, the translation driving mechanism is arranged on the die body, and a slide notch is formed in the end portion of the pushing piece block.

10. A wind blade forming die according to claim 1, wherein: the shaping assembly comprises a second cutter and a plurality of fourth guide grooves, the fourth guide grooves are formed in the upper die or the lower die, the second cutter is arranged on the lower die or the upper die, and the shapes of the second cutter and the fourth guide grooves are matched; the material belt traction guiding device comprises a plurality of guiding paper clamping groups arranged along the front-back direction, each guiding paper clamping group comprises two guiding paper clamping pieces, and the two guiding paper clamping pieces are respectively arranged on two sides of the stamping forming group.