CN116967369A - Mould for manufacturing air fryer fan blade - Google Patents

Abstract

The invention relates to a die for manufacturing air fryer fan blades, which is used for processing a substrate to form the fan blades, wherein the die comprises: a first mold; the second die is arranged opposite to the first die, and a processing channel for placing a substrate to be processed therein and allowing the substrate to move forward along the length direction of the processing channel is defined between the second die and the first die; the processing channel is sequentially provided with a convex forming area for forming convex ribs and bosses, a hole groove processing area for forming a connecting shaft hole, a residual material cutting area for cutting residual materials outside one fan blade processing area on the base plate, a fan blade forming area for forming fan blades and a flanging forming area for forming flanging and separating the fan blades from the base plate. The forming processing of each part can be simultaneously carried out in each fan blade processing area on the substrate only by one stamping process of the first die and the second die, so that the continuous processing of each part of the fan blade is realized, and the processing efficiency of the fan blade is greatly improved.

Description

Mould for manufacturing air fryer fan blade

Technical Field

The invention relates to the technical field of processing dies, in particular to a die for manufacturing air fryer fan blades.

Background

An air fryer is a small household appliance that utilizes high-speed air circulation technology for cooking. The heating device of the existing air fryer comprises a motor for generating hot air and a fan (fan blade), the fan comprises a base body and the fan blade connected with the base body for ensuring the overall strength of the fan, and blade parts of the fan blades are connected together in sequence.

Such a fan structure is disclosed in chinese patent application No. CN201520316379.7 (grant notice No. CN 204708674U). The fan structure with integrated fan blades generally adopts a stamping mode to form the blades on the substrate plate, and the included angle between the blades and the plane of the substrate is generally about 90 degrees. In addition, the middle part of the base member of fan still generally is provided with circular boss, has offered the connecting axle hole on the circular boss, and the outer periphery of base member still has the turn-ups, still need set up radial extension's protruding muscle structure on the base member. However, there is no mold for continuous and efficient molding of the fan in the prior art.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art, and provides a die for manufacturing air fryer fan blades, which can continuously process each part of the fan blades, so that the processing efficiency of the fan blades is effectively improved.

The technical scheme adopted for solving the technical problems is as follows: the die for manufacturing the air fryer fan blade is used for processing the substrate to form the fan blade, wherein the fan blade comprises a substrate with an axis and blades which are sequentially arranged in the circumferential direction around the axis of the substrate, each blade is turned over along the axis of the substrate, a boss protruding to one side along the axis is arranged in the middle of the substrate, a connecting shaft hole is formed in the boss, and convex ribs and flanges formed on the outer periphery of the convex ribs are sequentially arranged in the circumferential direction around the axis of the substrate;

comprising the following steps:

a first mold;

a second die disposed opposite to the first die, defining a processing channel therebetween in which a substrate to be processed is placed and which allows the substrate to advance in a length direction thereof, the second die being drivable by a driving mechanism to approach the first die to process the substrate placed in the processing channel and to be distant from the first die to open the processing channel to allow the substrate to continue advancing along the processing channel;

The processing channel is sequentially provided with a convex forming area for forming the convex ribs and the convex plates, a hole groove processing area for forming a connecting shaft hole, a residual material cutting area for cutting residual materials outside one fan blade processing area on the substrate, a fan blade forming area for forming the fan blades and a flanging forming area for forming the flanging and separating the fan blades from the substrate.

In order to facilitate continuous feeding in the substrate processing process, the first die is located below the second die, a plurality of groups of centralizing column assemblies are sequentially arranged on the first die along the length direction of the processing channel, each group of centralizing column assemblies comprises a first centralizing column and a second centralizing column which are respectively located at the left side and the right side of the substrate, a first limiting guide groove for limiting the left side of the substrate is formed in the side wall of the first centralizing column, a second limiting guide groove for limiting the right side of the substrate is formed in the side wall of the second centralizing column, the first limiting guide grooves and the second limiting guide grooves of each group of centralizing column assemblies are basically located on the same horizontal plane, the first centralizing column and the second centralizing column can move up and down relative to the first die so as to allow the substrate placed in the first limiting guide grooves and the second limiting guide grooves of the centralizing column assemblies to move down under the action of the second die to be attached to the first die, and after the second die is moved back to the first die, the substrate is driven to the initial position by the first die to reset to the initial position, and the substrate is placed on the initial position of the first die, and the initial position of the substrate is reset to the initial position.

In order to carry out stamping processing after the precompaction to the base plate, guarantee machining precision, the second mould includes connecting seat, floating mould and second elastic component, floating mould is with can be relative the mode that the connecting seat was floated from top to bottom is located the below of connecting seat, the second elastic component is located the connecting seat with between the floating mould, and act on the floating mould, thereby make the floating mould has the trend of relative the connecting seat moves down all the time.

In order to form protruding muscle and boss structure on the base plate punching press, first mould includes the location base and locates on the location base and with the corresponding first submodule of convex part shaping district, be equipped with on the floating mould with the corresponding second submodule of convex part shaping district, have punching press protruding muscle portion and punching press boss portion on the top surface of first submodule, have on the bottom surface of second submodule with punching press muscle slot portion and with the punching press recess portion of punching press boss portion looks adaptation.

In order to form an arc groove and a connecting shaft hole by punching on a substrate, the first die comprises a third sub die and a fourth sub die which are arranged on the positioning base and correspond to the forming area of the hole groove, the connecting seat is provided with an arc punching plate and a first punching needle which extend vertically, the arc punching plate and the first punching needle can move up and down along with the connecting seat, the floating die is provided with an arc yielding groove for the arc punching plate to pass through and a first yielding hole for the first punching needle to pass through, the third sub die is provided with an arc punching groove for sleeving the arc punching plate, the fourth sub die is provided with a first punching hole for sleeving the first punching needle, the arc punching plate is provided with two arc punching plates which are arranged at left and right intervals, the notch orientations of the arc punching plate are opposite, the third sub die is also provided with two arc punching grooves which are opposite left and right, the third sub die is provided with the arc punching groove, the two arc punching plates and the two arc punching plates are matched with the two arc punching grooves on the first sub die to form an arc blade section opposite to the arc blade section on the first arc section of the substrate, and the second arc section is formed by the arc blade section opposite to the arc section on the first arc section.

In order to form the peripheral outline of the fan blade on the base plate and ensure that the fan blade to be processed and the base plate do not separate, the first die comprises a fifth sub-die which is arranged on the positioning base and corresponds to the residual material cutting area, the connecting base is provided with a residual material punching block which can move up and down along with the connecting base, the floating die is provided with a yielding opening for the residual material punching block to pass through, the fifth sub-die is provided with a punching notch for sleeving the residual material punching block, the residual material punching block is provided with two opposite arc walls, the two arc walls extend in the left and right directions of a processing channel, notches of the two arc walls are respectively arranged forwards and backwards, the residual material punching block and the punching notch on the fifth sub-die are mutually matched so as to cut off the residual material part between two adjacent fan blade processing areas on the base plate to form a separation notch, the inner wall parts corresponding to the two arc walls on the separation notch respectively form a fourth section on the periphery of a base body of a rear fan blade on the base plate and a first arc-shaped groove on the base plate, the front end of the front arc-shaped groove is used for connecting the front arc-shaped groove with the front arc-shaped groove of the front end of the first fan blade on the base plate, and the front arc-shaped groove is reserved on the front arc-shaped groove of the base plate.

In order to reduce the processing difficulty of the blade and reduce the rejection rate, the blade forming area comprises a first stamping area and a second stamping area which are sequentially arranged along the feeding direction of the substrate;

the first die comprises a sixth sub-die which can be arranged on the positioning base in a vertically movable manner and corresponds to the first stamping area, a seventh sub-die which is opposite to the sixth sub-die is arranged on the floating die, first stamping blocks which are sequentially arranged along the circumferential direction are arranged on the positioning base corresponding to the sixth sub-die, first guide channels for accommodating the first stamping blocks are arranged on the sixth sub-die, a first wedge-shaped surface is arranged at the top of each first stamping block, a first mounting opening corresponding to each first guide channel is arranged on the seventh sub-die, a first stamping matching block is correspondingly arranged in each first mounting opening, a second wedge-shaped surface which is consistent with the inclination direction of the first wedge-shaped surface of each first stamping block is arranged on each first stamping matching block, a third elastic piece is arranged between the sixth sub-die and the positioning base, the sixth sub-die can overcome the elasticity of the third elastic piece in the seventh sub-die moving downwards and downwards in the pressing process, the first wedge-shaped surface is arranged at the top of each first sub-die, a first wedge-shaped surface is arranged on the first sub-die, a first blade is formed by the first wedge-shaped surface corresponding to the first guide channel, a first stamping block is formed in the upward direction, and a preset blade is removed from the first blade, and the first blade is formed by the first wedge-shaped surface is inclined upwards, and the first blade is exposed by the first wedge-shaped surface is formed by the first wedge-shaped surface and has a first wedge-shaped surface and is formed by the first wedge-shaped surface and has a first wedge-shaped surface;

The first die comprises an eighth sub-die which can be arranged on the positioning base in a vertically movable mode and corresponds to the second stamping area, the positioning base is provided with second stamping blocks which are sequentially arranged along the circumferential direction and correspond to the eighth sub-die, the eighth sub-die is provided with second guide channels for accommodating the second stamping blocks, the floating die is provided with second mounting holes which correspond to the second guide channels, each second mounting hole is correspondingly provided with a second stamping matching block, a fourth elastic piece is arranged between the eighth sub-die and the positioning base, the eighth sub-die can overcome the elastic force of the fourth elastic piece in the downward movement pressing process of the floating die, the top of each second stamping block is exposed, so that each blade on a substrate is deflected to be approximately perpendicular to the substrate by a preset inclination angle, and after the pressure of the floating die is removed, each second stamping block is driven upwards to reset to an initial position by the fourth elastic piece, and is accommodated in each second guide channel of each second stamping block.

In order to process and form the flanging of the fan blade, the first die also comprises a first fixed die arranged on the positioning base and a first movable die capable of moving up and down relative to the first fixed die, the top surface of the first fixed die is basically flush with the top surface of the positioning base, a first mounting cavity for arranging the first movable die is arranged on the first fixed die, a fifth elastic piece which acts on the bottom of the first movable die to enable the first movable die to move upwards is further arranged on the positioning base, the top surface of the first movable die is higher than the top surface of the first fixed die under the action of no external force, the size of the cross section of the first mounting cavity is smaller than the peripheral size of the fan blade base, a third punching block corresponding to the first interval and the second interval on the fan blade processing area on the substrate is further arranged on the first fixed die, and the top surface of the third punching block is higher than the top surface of the first fixed die;

The floating die is also provided with a second fixed die corresponding to the first fixed die, the connecting seat is provided with a second movable die which can move up and down relative to the second fixed die, the bottom surface of the second fixed die is basically flush with the bottom surface of the floating die, the second fixed die is provided with a through hole through which the second movable die passes, the second fixed die is also provided with a positioning notch corresponding to the third stamping block, the top of the third stamping block is accommodated in the positioning notch, and a profiling cavity matched with the shape of the fan blade is formed between the top surface of the first movable die and the bottom surface of the second movable die when the first movable die and the second movable die are in abutting connection;

and in the process that the first movable die is pressed by the second movable die to move downwards relative to the first fixed die, the third stamping block cuts off the first interval and the second interval on the substrate, so that the fan blade is separated from the substrate, and in the process that the first movable die moves downwards relative to the first fixed die, the first fixed die presses upwards on the peripheral edge of the fan blade substrate to form the flanging.

In order to accurately position the substrate relative to the positioning base and avoid the problem of deviation, the position, adjacent to the convex part forming area, of the connecting seat is also provided with a second punching needle which can penetrate through the floating die to punch the substrate to form a positioning hole, and the first die is provided with a second punching hole for sleeving the second punching needle;

The floating die is also provided with positioning pins which are sequentially arranged along the length direction of the processing channel, the first die is provided with positioning sockets corresponding to the positioning pins, and the positioning pins can penetrate through the positioning holes on the substrate to be inserted into the positioning sockets on the first die so as to position the substrate relative to the first die.

In order to ensure the stability of the relative movement between the first die and the second die, one of the first die and the second die is provided with a guide post extending vertically, and the other one is provided with a guide cylinder which is inserted into the guide post in a sliding way.

Compared with the prior art, the invention has the advantages that: the base plate can form a plurality of fan blade processing areas along its length direction, and each fan blade processing area can accomplish protruding muscle, boss's shaping processing, the processing of connecting shaft hole, the processing of the outline of fan blade base member, the shaping processing of fan blade and the processing of the turn-ups of fan blade base member in proper order in processing passageway protruding portion shaping district, hole groove processing district, clout excision district, fan blade shaping district and turn-ups shaping district to can break away from fan blade and base plate when carrying out turn-ups processing. The series of processing processes are performed on the same die, namely, only one stamping process of the first die and the second die is needed, the forming processing of each part can be simultaneously performed in each fan blade processing area on the substrate, continuous processing of each part of the fan blade is realized, and the processing efficiency of the fan blade is greatly improved.

Drawings

FIG. 1 is a schematic perspective view of a finished fan blade product after processing according to an embodiment of the present invention;

FIG. 2 is a schematic view of a continuous processing process of a substrate according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a mold according to an embodiment of the present invention (a second mold is in a pressed state);

FIG. 4 is a schematic perspective view of a mold according to an embodiment of the present invention (a second mold is in a raised state);

FIG. 5 is a right side view of a mold according to an embodiment of the present invention;

FIG. 6 is a vertical cross-sectional view of a mold of an embodiment of the present invention taken in a front-to-rear direction;

FIG. 7 is a schematic perspective view of a first mold according to an embodiment of the present invention, showing a substrate;

FIG. 8 is a schematic perspective view of the omitted substrate of FIG. 7;

FIG. 9 is a schematic perspective view of a second mold according to an embodiment of the present invention;

FIG. 10 is a schematic perspective view of FIG. 9 with the floating mold omitted;

FIG. 11 is a schematic perspective view of a partial portion of a first mold according to an embodiment of the present invention;

fig. 12 is a schematic perspective view of the sixth sub-mold and the eighth sub-mold in fig. 11 in a downward moving state;

FIG. 13 is a schematic perspective view of a partial portion of a second mold according to an embodiment of the present invention;

fig. 14 is a schematic perspective view of a first sub-mold according to an embodiment of the present invention;

FIG. 15 is a schematic perspective view of a second sub-mold according to an embodiment of the present invention;

fig. 16 is a schematic diagram of processing a flange of a fan blade in an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the embodiments of the drawings.

In the description and claims of the present invention, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the invention may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Fig. 1 shows a finished structure of a fan blade 10 of an air fryer, comprising a base body 11 having an axis and blades 12 arranged in succession in a circumferential direction about an axis O of the base body 11. The outer periphery of the base body 11 is substantially circular and is formed with a flange 15. Each blade 12 is turned over along the axis of the base 11 and extends radially of the base 11 (or is arranged slightly eccentrically with respect to the axis O of the base 11), the angle between the blade 12 and the plane of the base 11 being generally about 90 °. The middle part of the base 11 is provided with a boss 14 protruding to one side along the axis O, and the boss 14 is provided with a connecting shaft hole 140. The base 11 also has ribs 131 arranged in sequence in the circumferential direction around the axis O of the base 11, the number of ribs 131 being identical to the number of blades 12 and being arranged adjacent to the joint position of the blades 12 with the base 11.

Fig. 2 shows a schematic diagram of a continuous processing procedure for processing the substrate 1 to form the fan blade 10, wherein the substrate 1 is a strip-shaped plate, and after being fed into the processing channel 20 of the die, the forming process of the ribs 131, the bosses 14, the forming process of the connecting shaft holes 140 and the arc-shaped grooves 16, the forming process of the partition notches 18, the forming process of the fan blade 12, and the processing of the flanges 15 of the base 11 of the fan blade 10 (while separating the fan blade 10 from the substrate 1) can be sequentially performed along the feeding direction (the A1 direction shown in fig. 2). Specifically, a plurality of fan blade processing areas are formed on the substrate 1, and the distance of each forward movement of the substrate 1 is the length of one fan blade processing area.

The forming process of the arc groove 16 and the forming process of the partition notch 18 are to form the peripheral outline of the base 11 of the fan blade 10, and prevent the base 11 of the fan blade 10 from falling off from the substrate 1, for example, after the forming process of the arc groove 16 and the forming process of the partition notch 18, the base 11 of the fan blade 10 and the substrate 1 are connected together by the first space 191 and the second space 192 to ensure the accurate positioning of the subsequent forming process of the fan blade 12, after the forming process of the fan blade 12 is completed, the first space 191 and the second space 192 can be cut off (as shown in fig. 2b with a partial enlarged view of fig. 2), so that the fan blade 10 is separated from the substrate 1, and the flanging 15 of the base 11 of the fan blade 10 is completed while the fan blade 10 is separated from the substrate 1. The above-described processing of the substrate 1 will be specifically described below in connection with the specific structure of the mold.

With continued reference to fig. 2, the substrate 1 is further provided with positioning holes 190, and the positioning holes 190 are formed by punching a second punching pin 471 arranged on the second die 4 at an initial feeding position of the substrate 1, and the positioning holes 190 on the substrate 1 are provided with two positioning holes arranged at left and right intervals. After the substrate 1 is continuously processed, two parallel sets of alignment holes 190 are formed in the substrate 1. The floating die 41 further has positioning pins 472 sequentially provided along the longitudinal direction of the processing passage 20, and the first die 3 has positioning sockets 302 corresponding to the positioning pins 472. When the second mold 4 moves down, each positioning pin 472 can be inserted into the positioning socket 302 on the first mold 3 through the positioning hole 190 on the substrate 1, so as to accurately position the substrate 1 relative to the first mold 3.

Referring to fig. 3-16, a mold for manufacturing air fryer blade 10 is shown for processing substrate 1 as described above to form blade 10.

The mold of the present embodiment includes a first mold 3 and a second mold 4, wherein the second mold 4 is disposed opposite to the first mold 3, and the second mold 4 is located above the first mold 3, and defines a processing channel 20 therebetween in which the substrate 1 to be processed is placed and which allows the substrate 1 to advance in a length direction thereof. Wherein the second mould 4 can be driven by a driving mechanism (not shown) to be close to the first mould 3 for processing the substrate 1 placed in the processing channel 20 and to be far away from the first mould 3 for opening said processing channel 20 for allowing a continued advance of said substrate 1 along the processing channel 20.

For convenience of explanation of the processing region of the processing channel 20, fig. 7 shows a die structure diagram with the second die 4 omitted, and the processing channel 20 is sequentially provided with a convex forming region 21 for forming the convex rib 131, the convex boss 14, a hole groove processing region 22 for forming the connecting shaft hole 140, a remainder cutting region 23 for cutting the remainder outside one fan blade processing region on the base plate 1, a blade forming region 24 for forming the fan blade 12, and a flange forming region 25 for forming the flange 15 and simultaneously separating the fan blade 10 from the base plate 1, along the feeding direction of the base plate 1. The connecting shaft hole 140 and the arc-shaped groove 16 can be formed at the same time when the substrate 1 is processed in the hole groove processing area 22, and the residual material cutting area 23 can process the substrate 1 to form the partition notch 18. The blade forming area 24 sequentially includes a first punching area 241 and a second punching area 242, wherein the blade 12 having a predetermined inclination angle (e.g., about 45 °) is formed in the first punching area 241 in advance, and then the blade 12 is continuously punched in the second punching area 242 to form the blade 12 structure having an angle of 90 ° with respect to the base 11. By two stamping operations, the stamping difficulty of the blade 12 can be reduced, and the rejection rate can be reduced.

With continued reference to fig. 7, for convenience of space layout considerations, there is also a void region 250 between the second stamped region 242 of the blade forming region 24 and the turn-up forming region 25. In this vacancy zone 250, the substrate 1 is not processed in order to adapt to the beat considerations during the feeding of the substrate 1, and at the same time, in order to avoid the problem of deformation of the corresponding portion of the substrate 1 due to the fact that the blade forming zone 24 is too close to the flanging forming zone 25. Correspondingly, the fan blade processing area corresponding to the vacancy area 250 on the substrate 1 is the S area in fig. 2.

Referring to fig. 6 to 8, the first mold 3 includes a positioning base 30, a first sub-mold 31, a third sub-mold 32, a fourth sub-mold 33, a fifth sub-mold 34, a sixth sub-mold 35, an eighth sub-mold 36, a ninth sub-mold 39, a first fixed mold 37, and a first movable mold 38. Wherein the positioning base 30 provides a support platform for mounting the above components.

Referring to fig. 9 and 10, the second mold 4 includes a connecting base 40, a floating mold 41, a second sub-mold 42, a seventh sub-mold 43, a second fixed mold 45, a second movable mold 46, a first punch pin 402, a second punch pin 471, an arc punch plate 401, and a remainder punch block 403. The floating mold 41 is disposed below the connecting seat 40 and can move up and down relative to the connecting seat 40. The second sub-mold 42, the seventh sub-mold 43, and the second fixed mold 45 are provided on the floating mold 41, and can move up and down with the floating mold 41. The first punch pin 402, the second punch pin 471, the arc punch plate 401, the remainder punch block 403 and the second movable die 46 are disposed on the connecting base 40 and can move up and down along with the connecting base 40. Correspondingly, the floating mold 41 is correspondingly provided with a first abdication hole 411 for the first punch pin 402 to pass through, a second abdication hole 415 for the second punch pin 471 to pass through, an arc abdication groove 410 for the arc punch plate 401 to pass through, an abdication port 412 for the residual material punch block 403 to pass through and an abdication hole 414 for the second movable mold 46 to pass through, and the second fixed mold 45 is installed in the above abdication hole 414.

The connecting seat 40 substantially conforms to the overall shape of the floating die 41. The connection base 40 may be connected to an external driving mechanism so as to be moved up and down by the driving mechanism. The connecting seat 40 is provided with a connecting frame 404 extending vertically, the connecting frame 404 is provided with a limit sliding block, correspondingly, the peripheral wall of the floating mould 41 is provided with a limit sliding groove 413 extending vertically, and the limit sliding block on the connecting frame 404 of the connecting seat 40 is slidingly restrained in the limit sliding groove 413 of the floating mould 41. A second elastic member 532 is further disposed between the connecting seat 40 and the floating mold 41, and the second elastic member 532 may be a spring, under the action of which the floating mold 41 always has a downward movement tendency relative to the connecting seat 40. In a natural state, that is, in a state that the floating mold 41 moves down to a low position relative to the connecting seat 40, the first punch pin 402, the second punch pin 471, the arc punch plate 401 and the remainder punch block 403 are correspondingly accommodated in the first abdication hole 411, the second abdication hole 415, the arc abdication groove 410 and the abdication opening 412 of the floating mold 41.

Referring to fig. 3 and 4, in order to ensure a relatively smooth movement between the first mold 3 and the second mold 4, the positioning base 30 of the first mold 3 is provided with vertically extending guide posts 300, and the connecting base 40 of the second mold 4 is provided with guide cylinders 48 at positions corresponding to the guide posts 300. When the second die 4 moves downwards, the guide cylinder 48 can be sleeved in the guide column 300 and moves along the guide column 300, so that the second die 4 is prevented from shifting relative to the first die 3 in the moving downwards process, and the machining precision of the fan blade 10 is further guaranteed. The guide post 300 can be restrained on the positioning base 30 in a vertically movable manner, the positioning base 30 is further provided with a sixth elastic element 536, the sixth elastic element 536 is a spring sleeved on the guide post 300, and under the action of the sixth elastic element 536, the guide post 300 has a tendency to move upwards and plays a role in vibration reduction.

Referring to fig. 7 and 8, a plurality of sets of centralizing column assemblies are further sequentially disposed on the first mold 3 along the length direction of the processing passage 20. Each group of centralizing column components comprises a first centralizing column 51 and a second centralizing column 52 which are respectively positioned at the left side and the right side of the base plate 1, wherein a first limiting guide groove 510 for limiting the left side of the base plate 1 is arranged on the side wall of the first centralizing column 51, and a second limiting guide groove 520 for limiting the right side of the base plate 1 is arranged on the side wall of the second centralizing column 52. The first and second limit channels 510, 520 of each set of centralizer assemblies are located substantially on the same horizontal plane to better position the substrate 1 and to provide for forward movement of the substrate 1 along the first and second limit channels 510, 520.

The positioning base 30 of the first mold 3 has a plurality of vertically extending guide holes 303 thereon. The first centering column 51 and the second centering column 52 are each provided in the corresponding guide hole 303 so as to be movable up and down. A first elastic member is further provided in the guide hole 303 of the first mold 3. Under the pressing action of the second mold 4, the first centering columns 51 and the second centering columns 52 move downward, so that the substrate 1 placed in the first limit guide groove 510 and the second limit guide groove 520 of the centering column assembly can also move downward to be attached to the first mold 3 and be pressed by the floating mold 41. After the second mold 4 is moved up, each of the first centering post 51 and the second centering post 52 is reversely reset to the initial position by the first elastic member, and in the initial position state, the substrate 1 placed on the centering post assembly has a predetermined distance from the top surface of the first mold 3, thereby avoiding that the substrate 1 and the top surface of the positioning base 30 of the first mold 3 cannot be smoothly moved forward due to a large friction force therebetween.

With continued reference to fig. 7, a guide seat 301 is also provided on the positioning base 30 at a location corresponding to the feed location of the process tunnel 20. The guide holder 301 has a guide opening 3010 tapered in the feeding direction of the substrate 1. Under the guiding action of the guiding opening 3010, the substrate 1 can more accurately enter the first limiting guide groove 510 and the second limiting guide groove 520 of the centralizing column assembly in the initial feeding process.

Since the first and second centering columns 51 and 52 of the centering column assembly only provide support to the left and right sides of the base plate 1, the base plate 1 has a problem that a central region thereof is depressed to some extent, and for this purpose, support blocks 70 are sequentially disposed in the central portion of the positioning base 30 along the length direction of the processing channel 20, wherein seventh elastic members 537 are provided at the bottom of the support blocks 70, and the seventh elastic members 537 may employ springs. Under the action of the seventh elastic member 537, the top surface of the support block 70 exposed from the positioning base 30 is supported on the bottom of the substrate 1, and when the floating mold 41 presses the substrate 1 downward, the support block 70 can move downward against the elastic force of the seventh elastic member 537 and shift below the top surface of the positioning base 30. The top of the supporting block 70 is of an inclined plane structure, so that the influence on the forward movement of the substrate 1 is avoided.

Referring to fig. 8 and 10, the second punch needle 471 is disposed on the connecting base 40 and is disposed adjacent to the protrusion forming region 21. A ninth sub-die 39 is provided on the positioning base 30 of the first die 3 corresponding to the second punch 471, and a top surface of the ninth sub-die 39 is substantially flush with a top surface of the positioning base 30. The ninth sub-die 39 has a second punched hole 390 for sleeving a second punch pin 471, and the second punched hole 390 has a through hole structure so as to facilitate the falling of the waste material.

The first sub-die 31 is disposed on the positioning base 30 and corresponds to the protrusion forming region 21 of the processing channel 20. The top surface of the first sub-die 31 fitted on the positioning base 30 is substantially flush with the top surface of the positioning base 30. The first sub-die 31 has a punched rib portion 311 and a punched boss portion 312 on its top surface. The second sub-die 42 is provided on the floating die 41, and also corresponds to the convex portion forming region 21, and the bottom surface of the second sub-die 42 fitted on the floating die 41 is substantially flush with the bottom surface of the floating die 41. The second sub-mold 42 is opposite to the first sub-mold 31 in the up-down direction. The second sub-die 42 has a punched rib groove portion 421 adapted to the punched rib portion 311 and a punched groove portion 422 adapted to the punched boss portion 312 on the bottom surface. The press fit of the first sub-die 31 and the second sub-die 42 can form the convex rib 131 and the boss 14 structure of the fan blade 10 on the substrate 1.

Referring to fig. 8, the third sub-die 32 and the fourth sub-die 33 correspond to the hole-slot forming region of the process tunnel 20. The third sub-die 32 has an arc punching slot 320 for sleeving the arc punching plate 401, and the fourth sub-die 33 has a first punching hole 330 for sleeving the first punching pin 402. The arc-shaped punching plates 401 connected to the connecting seat 40 have two arc-shaped punching plates 401 arranged at left and right intervals, the notches of the two arc-shaped punching plates 401 are oppositely arranged, and the third sub-die 32 also has two arc-shaped punching plates correspondingly arranged at left and right. The two arc punching plates 401 and the two arc punching grooves 320 are mutually matched so as to punch two opposite arc grooves 16 on one fan blade processing area on the base plate 1, and the inner wall parts of the two arc grooves 16 form opposite first arc sections 171 and second arc sections 172 on the peripheral edge of the base body 11 of the fan blade 10. The arc-shaped punching groove 320 and the first punching hole 330 are also through-hole structures so as to facilitate the falling of waste materials

It will be appreciated that the third sub-die 32 and the fourth sub-die 33 may be separate pieces or may be integrated, that is, the arc-shaped slot 320 and the first punched hole 330 may be provided on one sub-die.

The fifth sub-die 34 corresponds to the remainder cut-out 23 of the process tunnel 20, and the top surface of the fifth sub-die 34 is also substantially flush with the top surface of the locating base 30. The fifth sub-die 34 has a stamping notch 340 for receiving the slug of the remainder. Specifically, the slug has two opposing arcuate walls 4030, the two arcuate walls 4030 extending in the left-right direction of the process channel 20, and the recesses of the two are disposed forward and rearward, respectively. The shape of the cross-section of the punching gap 340 on the fifth sub-die 34 corresponds to the shape of the cross-section of the punching gap 340. The excess material punching block is matched with the punching notch 340 on the fifth sub-die 34 so as to cut off the excess material part between the adjacent two fan blade processing areas on the substrate 1 to form a partition notch 18, and the inner wall parts corresponding to the two arc walls on the partition notch 18 respectively form a fourth arc-shaped section 174 on the peripheral edge of the base body 11 of the next fan blade 10 on the substrate 1 and a third arc-shaped section 173 on the peripheral edge of the base body 11 of the previous fan blade 10. The front end portions of the front partition notch 18 and the two arc-shaped grooves 16 on the base plate 1 are reserved with a first space 191 for connecting the base body 11 of the fan blade 10, and the rear end portions of the rear partition notch 18 and the two arc-shaped grooves 16 on the base plate 1 are reserved with a second space 192 for connecting the base body 11 of the fan blade 10, see the structure of the base plate 1 shown in fig. 2a, which is shown in a partial enlarged view in fig. 2.

Referring to fig. 11 and 12, the sixth sub-die 35 is movably disposed on the positioning base 30 up and down, and corresponds to the first punching area 241 of the blade forming area 24. The positioning base 30 is further provided with first punching blocks 351 which are sequentially arranged along the circumferential direction corresponding to the sixth sub-die 35, the sixth sub-die 35 is provided with first guide channels 350 for accommodating the first punching blocks 351 therein, and the top of each first punching block 351 is provided with a first wedge-shaped surface 3510. A third elastic member 533 is disposed between the sixth sub-die 35 and the positioning base 30, and the third elastic member 533 may be a gas spring structure. In a natural state, the sixth sub-mold 35 is acted by the third elastic member 533, the top surface of the sixth sub-mold 35 is higher than the top surface of the positioning base 30, and each first punch 351 is accommodated in the corresponding first guide channel 350 of the sixth sub-mold 35. The seventh sub-die 43 is provided in the floating die 41 and vertically faces the sixth sub-die 35. The bottom surface of the seventh sub-die 43 is substantially flush with the bottom surface of the floating die 41, and the seventh sub-die 43 has first mounting openings 430 corresponding to the respective first guide passages 350. The first mounting openings 430 of the seventh sub-die 43 are correspondingly provided with first press-fitting blocks 431, and the bottom of each first press-fitting block 431 is provided with a second wedge surface 4310 which is in accordance with the inclination direction of the first wedge surface 3510 of the first press-fitting block 351. The sixth sub-die 35 can move downward against the elastic force of the third elastic member 533 during the downward movement of the seventh sub-die 43 (with the floating die 41) and expose the top of each of the first punching blocks 351 to form the blade 12 having a predetermined inclination angle at the blade processing region on the substrate 1. After the pressure of the seventh sub-die 43 is released, the sixth sub-die 35 may be driven upward by the third elastic member 533 to be reset, and the first punch blocks 351 may be received in the corresponding first guide channels 350 again.

Since the top of the first punch 351 and the bottom of the first press-fit 431 are both wedge-shaped, the blade 12 with a predetermined angle of inclination (e.g., about 45 °) may be preformed in the first punch 241 in the blade processing area on the substrate 1.

The eighth sub-die 36 is also movably disposed on the positioning base 30, and corresponds to the second punching area 242 of the processing channel 20. The positioning base 30 further has second punching blocks 361 arranged in sequence along the circumferential direction corresponding to the eighth sub-die 36, and the eighth sub-die 36 has second guide channels 360 for accommodating the second punching blocks 361 therein. A fourth elastic member 534 is disposed between the eighth sub-die 36 and the positioning base 30, and the fourth elastic member 534 may adopt a gas spring structure. In a natural state, the eighth sub-die 36 is acted by the fourth elastic member 534, the top surface of the eighth sub-die 36 is higher than the top surface of the positioning base 30, and each second punching block 361 is accommodated in the second guide channel 360 corresponding to the eighth sub-die 36. The floating mold 41 has second mounting openings 440 corresponding to the second guide channels 360, and each second mounting opening 440 corresponds to the second guide channel 360 of the eighth sub-mold one by one in the up-down direction. A second press-fit block 441 is correspondingly disposed in each second mounting opening 440, wherein after the second mounting openings 440 are assembled in place, the remaining space in the second mounting openings 440 forms a reserved opening 4401 opposite to the second press-fit block 361. The side wall of the second press-fit block 441 facing the reserved opening 4401 is a vertical extending flat wall, and the side wall of the second press-fit block 361 corresponding to the second press-fit block 441 is also a vertical extending flat wall. The bottom of the second press-fit block 441 and the top of the second press-fit block 361 are both planar structures. During the downward movement and pressing process of the floating mold 41, the eighth sub-mold 36 moves downward against the elastic force of the fourth elastic member 534, and the top of each second punching block 361 is exposed to the eighth sub-mold and extends into the reserved opening 4401 of the floating mold 41, so that each blade 12 on the substrate 1 is deflected from a predetermined inclination angle to an angle state substantially perpendicular to the substrate 1. After the pressure of the floating mold 41 is removed, the eighth sub-mold can be driven upward by the fourth elastic member 534 to return to the initial position, and each second punch 361 is accommodated in the corresponding second guide channel 360 on the eighth sub-mold.

The bottom surface of the floating die 41 is provided with a second profiling concave part 49 which is matched with the shape of the fan blade 10 corresponding to the vacancy zone 250, and the positioning base 30 is provided with a supporting block 70 corresponding to the second profiling concave part 49 so as to upwards support the fan blade processing area on the base plate 1.

Referring to fig. 8 and 13, a first fixed die 37 and a first movable die 38 are provided on the positioning base 30 and correspond to the burring area 25 of the processing passage 20. The top surface of the first die 37 is substantially flush with the top surface of the positioning base 30. The middle part of the first fixed die 37 is provided with a first installation cavity 370 which is vertically penetrated, the first movable die 38 is vertically movably arranged in the first installation cavity 370 of the first fixed die 37, and the size of the cross section of the first installation cavity 370 is smaller than the peripheral size of the base body 11 of the fan blade 10. The positioning base 30 is further provided with a fifth elastic member 535 that can act on the bottom of the first movable mold 38 to make the first movable mold 38 have an upward movement tendency, and the fifth elastic member 535 may be a gas spring. Under the condition that the first movable mould 38 is not subjected to external force, the top surface of the first movable mould 38 is higher than the top surface of the first fixed mould 37, a third punching block 380 corresponding to a first space 191 and a second space 192 on a fan blade processing area on the substrate 1 is further arranged on the first fixed mould 37, and the top surface of the third punching block 380 is higher than the top surface of the first fixed mould 37. As shown in fig. 2, the first and second spaces 191 and 192 each have two, and correspondingly, the third punching block 380 has four, which are in one-to-one correspondence with the two first and second spaces 191 and 192, respectively.

The floating mold 41 further has a second fixed mold 45 corresponding to the first fixed mold 37 in the up-down direction, the bottom surface of the second fixed mold 45 is substantially flush with the bottom surface of the floating mold 41, and the second fixed mold 45 further has a positioning recess 451 corresponding to the third punching block 380 for accommodating the top of the third punching block therein. The connecting seat 40 is provided with a second movable mold 46 which can move up and down relative to a second fixed mold 45, and the second fixed mold 45 is provided with a through hole 450 for the second movable mold 46 to pass through. The second movable mold 46 has a concave area for accommodating the fan blade 10 or a first profiling concave 460 adapted to the top of the fan blade 10 on the bottom surface, and the peripheral edge portion of the second movable mold 46 can be pressed against the inner side portion of the outer peripheral edge of the base 11 of the fan blade 10.

In the process that the first movable die 38 is pressed by the second movable die 46 to move downwards relative to the first fixed die 37, the third punching block 380 is matched with the positioning notch 451 on the second fixed die 45 to cut off the first space 191 and the second space 192 on the base plate 1, so that the fan blade 10 base body 11 is separated from the base plate 1, and in the process that the first movable die 38 is continuously moved downwards relative to the first fixed die 37, the first fixed die 37 presses upwards the outer periphery of the fan blade 10 base body 11 to form a flanging 15 structure of the fan blade 10. In a state that the top surface of the first movable mold 38 is abutted against the bottom surface of the second movable mold 46, a profiling cavity matched with the shape of the fan blade 10 or a concave cavity 60 for integrally accommodating the fan blade 10 is formed between the top surface of the first movable mold 38 and the bottom surface of the second movable mold 46.

The middle part of the second movable mold 46 has a mounting hole extending up and down, in which an ejector pin 71 capable of moving up and down and an eighth elastic member 538 are provided, the eighth elastic member 538 is preferably a spring, and the lower end of the ejector pin 71 always has a tendency to expose the bottom surface of the second movable mold 46 under the action of the eighth elastic member 538. After the flanging 15 of the fan blade 10 is processed, the second movable mold 46 and the second fixed mold 45 move upwards along with the moving seat, the processed fan blade 10 stays on the first movable mold 38 under the action of the ejector pin 71, wherein the first movable mold 38 is reset upwards to the initial position under the action of the fifth elastic piece 535, and the fan blade 10 separated from the substrate 1 and the substrate 1 are basically on the same horizontal plane under the state that the first movable mold 38 is at the initial position, so that the separated fan blade 10 can be moved out of the flanging forming area 25 to realize automatic blanking under the pushing of the substrate 1 in the continuous advancing process of the substrate 1.

Along with the continuous feeding of the substrate 1 into the processing channel 20, the substrate 1 may form a plurality of fan blade processing areas along the length direction thereof, and each fan blade processing area may sequentially complete the forming process of the ribs 131, the boss 14, the processing of the connecting shaft hole 140, the processing of the outer contour of the substrate 11 of the fan blade 10, the forming process of the blade 12, and the processing of the flange 15 of the substrate 11 of the fan blade 12 in the protrusion forming area 21, the hole slot processing area 22, the remainder cutting area 23, the blade forming area 24, and the flange forming area 25, and may separate the fan blade 10 from the substrate 1 while performing the flange 15 processing. The series of processing processes are performed on the same die, namely, only one stamping process of the first die 3 and the second die 4 is needed, the forming processing of each part can be simultaneously performed in each fan blade processing area on the substrate 1, the continuous processing of each part of the fan blade 10 is realized, and the processing efficiency of the fan blade 10 is greatly improved.

Claims (10)

1. A mould for manufacturing air fryer blades, which is used for processing a substrate (1) to form a blade (10), wherein the blade (10) comprises a substrate (11) with an axis and blades (12) which are sequentially arranged in the circumferential direction around the axis of the substrate (11), each blade (12) is folded along the axis of the substrate (11), the middle part of the substrate (11) is provided with a boss (14) which protrudes to one side along the axis, the boss (14) is provided with a connecting shaft hole (140), and the substrate (11) is also provided with a flange (15) which is sequentially arranged with ribs (131) in the circumferential direction around the axis of the substrate (11) and is formed at the outer periphery of the flange;

the method is characterized by comprising the following steps:

a first mold (3);

a second die (4) disposed opposite to the first die (3) and defining a processing channel (20) therebetween for placing therein a substrate (1) to be processed and allowing the substrate (1) to advance along a length direction thereof, the second die (4) being drivable by a driving mechanism so as to be close to the first die (3) for processing the substrate (1) placed in the processing channel (20) and so as to be distant from the first die (3) for opening the processing channel (20) to allow the substrate (1) to continue advancing along the processing channel (20);

the processing channel (20) is sequentially provided with a convex forming area (21) for forming the convex ribs (131) and the convex plates (14), a hole groove processing area (22) for forming the connecting shaft holes (140), a residual material cutting area (23) for cutting residual materials out of one fan blade processing area on the substrate (1), a blade forming area (24) for forming the blades (12) and a flanging forming area (25) for forming the flanging (15) and separating the fan blades (10) from the substrate (1) along the feeding direction of the substrate (1).

2. The mold for making air fryer blades according to claim 1, wherein: the first die (3) is located below the second die (4), a plurality of groups of centralizing column assemblies are sequentially arranged on the first die (3) along the length direction of the processing channel (20), each group of centralizing column assemblies comprises a first centralizing column (51) and a second centralizing column (52) which are respectively located at the left side and the right side of the base plate (1), a first limiting guide groove (510) for limiting the left side of the base plate (1) is formed in the side wall of the first centralizing column (51), a second limiting guide groove (520) for limiting the right side of the base plate (1) is formed in the side wall of the second centralizing column (52), the first limiting guide groove (510) and the second limiting guide groove (520) of each group of centralizing column assemblies are basically located on the same horizontal plane, the first centralizing column (51) and the second centralizing column (52) can move up and down relative to the first die (3) so as to allow the first limiting guide groove (510) placed in the first centralizing column assemblies to move to the first die (4) and the second die (4) to the second limiting guide groove (520) to be in the opposite direction, and the first die (4) can be driven to the first die (4) and the second die (4) to reset to the limiting guide groove.

3. The mold for making air fryer blades according to claim 2, wherein: the second die (4) comprises a connecting seat (40), a floating die (41) and a second elastic piece (532), wherein the floating die (41) is arranged below the connecting seat (40) in a manner of being capable of floating up and down relative to the connecting seat (40), and the second elastic piece (532) is arranged between the connecting seat (40) and the floating die (41) and acts on the floating die (41), so that the floating die (41) always has a trend of moving downwards relative to the connecting seat (40).

4. A mold for making air fryer blades according to claim 3, wherein: the first die (3) comprises a positioning base (30) and a first sub-die (31) which is arranged on the positioning base (30) and corresponds to the convex forming area (21), a second sub-die (42) which corresponds to the convex forming area (21) is arranged on the floating die (41), a stamping rib part (311) and a stamping boss part (312) are arranged on the top surface of the first sub-die (31), and a stamping rib groove part (421) which is matched with the stamping rib part (311) and a stamping groove part (422) which is matched with the stamping boss part (312) are arranged on the bottom surface of the second sub-die (42).

5. The mold for making air fryer blades according to claim 4, wherein: the first die (3) comprises a third sub-die (32) and a fourth sub-die (33) which are arranged on the positioning base (30) and correspond to the hole slot forming area, the connecting seat (40) is provided with a vertically extending arc punching plate (401) and a first punching needle (402), the arc punching plate (401) and the first punching needle (402) can move up and down along with the connecting seat (40), the floating die (41) is provided with an arc yielding groove (410) for the arc punching plate (401) to pass through and a first yielding hole (411) for the first punching needle (402) to pass through, the third sub-die (32) is provided with an arc punching groove (320) for sleeving the arc punching plate (401), the fourth sub-die (33) is provided with two arc punching plates (401) which are arranged at intervals left and right, the two floating die (41) are arranged towards the opposite to each other, the two opposite arc punching grooves (16) are formed on the two opposite arc punching plates (32), the inner wall parts of the two arc-shaped grooves (16) form a first arc-shaped section (171) and a second arc-shaped section (172) which are opposite to each other on the periphery of the base body (11) of the fan blade (10).

6. The mold for making air fryer blades according to claim 5, wherein: the first die (3) comprises a fifth sub-die (34) arranged on the positioning base (30) and corresponding to the residual material cutting-off area (23), the connecting seat (40) is provided with a residual material punching block (403) capable of moving up and down along with the connecting seat (40), the floating die (41) is provided with a yielding port (412) for the residual material punching block (403) to pass through, the fifth sub-die (34) is provided with a punching notch (340) for sleeving the residual material punching block (403), the residual material punching block (403) is provided with two opposite arc walls (4030), the two arc walls (4030) extend in the left and right directions of the processing channel (20), notches of the two arc walls (4030) are respectively arranged forward and backward, the residual material punching block (403) and the punching notch (340) on the fifth sub-die (34) are mutually matched so as to cut off a residual material part between two adjacent blade processing areas on the base plate (1) to form a cutting-off notch (18), the residual material part between the two blade processing areas on the base plate (1) and the two blade parts form a cutting-off notch (18) along the arc-shaped base body (11) on the front part (11) and the arc-shaped base body (11) on the front part (11) of the arc-shaped base body (11) on the front part (10), the front end parts of the front cut-off notch (18) and the two arc-shaped grooves (16) on the base plate (1) are reserved with a first interval (191) for connecting the base body (11) of the fan blade (10), and the rear end parts of the rear cut-off notch (18) and the two arc-shaped grooves (16) on the base plate (1) are reserved with a second interval (192) for connecting the base body (11) of the fan blade (10).

7. The mold for making air fryer fan blade according to claim 6, wherein: the blade forming area (24) comprises a first stamping area (241) and a second stamping area (242) which are sequentially arranged along the feeding direction of the substrate (1);

the first mold (3) comprises a sixth sub-mold (35) which can be movably arranged on the positioning base (30) up and down and corresponds to the first stamping area (241), the floating mold (41) is provided with a seventh sub-mold (43) which is opposite to the sixth sub-mold (35), the positioning base (30) is provided with first stamping blocks (351) which are sequentially arranged along the circumferential direction corresponding to the sixth sub-mold (35), the sixth sub-mold (35) is provided with first guide channels (350) for accommodating the first stamping blocks (351), the top of each first stamping block (351) is provided with a first wedge-shaped surface (3510), the seventh sub-mold (43) is provided with a first mounting opening (430) which corresponds to each first guide channel (350), each first mounting opening (430) is provided with a first stamping matching block (431), each first stamping matching block (431) is provided with a second wedge-shaped surface (3510) which is used for accommodating each first stamping block (351), and the third sub-mold (43) can move downwards in an elastic manner against the elastic force between the third wedge-shaped surface (533) and the sixth sub-mold (43) in the elastic force of the positioning base (30), and the top of each first punching block (351) is exposed to form a blade (12) with a preset inclination angle in a blade processing area on the substrate (1), and the blade is reset by being driven upwards by a third elastic piece (533) after the pressure of the seventh sub-die (43) is removed, and each first punching block (351) is accommodated in each first guide channel (350);

The first die (3) comprises an eighth sub-die (36) which can be arranged on the positioning base (30) in a vertically movable manner and corresponds to the second punching area (242), the positioning base (30) is provided with second punching blocks (361) which are sequentially arranged along the circumferential direction and correspond to the eighth sub-die (36), the eighth sub-die (36) is provided with second guide channels (360) for accommodating the second punching blocks (361) therein, the floating die (41) is provided with second mounting openings (440) corresponding to the second guide channels (360), each second mounting opening (440) is provided with a second punching matching block (441) correspondingly, a fourth elastic piece (534) is arranged between the eighth sub-die (36) and the positioning base (30), the eighth sub-die (36) can overcome the elastic force of the fourth elastic piece (534) to move downwards in the pressing process of the floating die (41) and enable the second punching blocks (361) to be accommodated therein, so that the top blades (361) are inclined to restore the substrate (1) from the initial position (534) to the initial position (1) to the initial position (41) to the initial position (1) which is retracted vertically, and each second punching block (361) is accommodated in each second guide channel (360).

8. The mold for making air fryer fan blade according to claim 7, wherein: corresponding to the flanging forming area (25), the first die (3) further comprises a first fixed die (37) arranged on the positioning base (30) and a first movable die (38) capable of moving up and down relative to the first fixed die (37), the top surface of the first fixed die (37) is basically flush with the top surface of the positioning base (30), a first mounting cavity (370) for placing the first movable die (38) is arranged on the first fixed die (37), a fifth elastic piece (535) acting on the bottom of the first movable die (38) to enable the first movable die (38) to have an upward moving trend is further arranged on the positioning base (30), the top surface of the first movable die (38) is higher than the top surface of the first fixed die (37) under the action of no external force, the size of the cross section of the first mounting cavity (370) is smaller than the peripheral size of the fan blade (10) matrix (11), and a pressing block (380) is further arranged on the first fixed die (38) and corresponds to the top surface of the first fan blade (37) in a first pressing area (37);

The floating die (41) is further provided with a second fixed die (45) corresponding to the first fixed die (37), the connecting seat (40) is provided with a second movable die (46) capable of moving up and down relative to the second fixed die (45), the bottom surface of the second fixed die (45) is basically flush with the bottom surface of the floating die (41), the second fixed die (45) is provided with a through hole (450) for the second movable die (46) to pass through, the second fixed die (45) is further provided with a positioning notch (451) for accommodating the top of the third stamping block corresponding to the third stamping block (380), and a profiling cavity matched with the shape of the fan blade (10) is formed between the top surface of the first movable die (38) and the bottom surface of the second movable die (46) in a state that the first movable die (38) and the second movable die (46) are abutted together;

in the process that the first movable die (38) is pressed by the second movable die (46) to move downwards relative to the first fixed die (37), the third punching block (380) cuts off the first space (191) and the second space (192) on the substrate (1), so that the fan blade (10) is separated from the substrate (1), and in the process that the first movable die (38) is continuously moved downwards relative to the first fixed die (37), the first fixed die (37) presses upwards the periphery of the substrate (11) of the fan blade (10) to form the flanging (15).

9. A mould for making air fryer blades according to any one of claims 3-8, wherein: the connecting seat (40) is provided with a second punching needle (471) which can penetrate through the floating die (41) to punch the base plate (1) to form a positioning hole (190), and the first die (3) is provided with a second punching hole (390) for sleeving the second punching needle (471);

the floating die (41) is further provided with positioning pins (472) which are sequentially arranged along the length direction of the processing channel (20), the first die (3) is provided with positioning sockets (302) corresponding to the positioning pins (472), and the positioning pins (472) can be inserted into the positioning sockets (302) on the first die (3) through the positioning holes (190) on the substrate (1) so as to position the substrate (1) relative to the first die (3).

10. The mold for making air fryer fan blades according to any one of claims 1-8, wherein: one of the first die (3) and the second die (4) is provided with a guide column (300) extending vertically, and the other one is provided with a guide cylinder (48) which is inserted into the guide column (300) in a sliding way.