CN220050231U - Strip cutting device and magnetic core winding system - Google Patents

Abstract

The utility model provides a strip cutting device and a magnetic core winding system, wherein the strip cutting device comprises a columnar vertically arranged cutter body, and a cutting end face is arranged on the lower side of the cutter body; the lifting driving device is connected to the upper side of the cutter body, the cutting platform is arranged below the cutter body, the cutting platform is provided with a cutting groove corresponding to the projection position of the cutter body, the shape of the cutting groove is matched with the horizontal projection shape of the cutter body, and an assembly gap is formed between the cutting groove and the outer side of the cutter body. The application of the strip cutting device is based on the arrangement of the columnar cutter body, so that the sectional cutting can be effectively carried out on the alloy strip Jin Daicai, and the cutting treatment can be completed in three sections; compared with the traditional mode that the straight blade is directly cut and divided into two sections of strips, the cutting ports of the first material section and the second material section obtained by dividing can be tidier, and the possibility of the phenomenon of warping after the magnetic core is wound and processed is reduced.

Description

Strip cutting device and magnetic core winding system

Technical Field

The utility model relates to the technical field of wound magnetic core processing, in particular to a strip cutting device and a magnetic core winding system.

Background

The winding and spraying magnetic core applied to the modern industry is prepared through 6 working procedures of master alloy smelting, amorphous strip throwing, amorphous strip winding, heat treatment, spraying and copper wire winding. The winding mode of the amorphous and nanocrystalline winding magnetic core basically adopts a full-automatic winding machine to wind the magnetic core before heat treatment, has low manual strength and high working efficiency, and is a representation form of full-automatic production.

The full-automatic winding machine is provided with a magnetic core winding and cutting device, and cutting tools in the current cutting device are all sharp knife edges which are in a straight shape and form an included angle of 90 degrees with the running direction of the strip. The cutter of the straight-line port has simple structure and high cutting efficiency of the strip, but the magnetic core wound by the strip cut by the cutter has a certain curling condition in microcosmic view, and the magnetic core wound by the strip is easy to generate a phenomenon of warping after a spraying process.

Disclosure of Invention

The utility model provides a strip cutting device and a magnetic core winding system for overcoming the defects in the prior art. The alloy material of the alloy strip is typically applied with respect to amorphous or nanocrystalline alloy materials.

The strip cutting device comprises a cutter body which is vertically arranged in a columnar shape, and a cutting end face is arranged on the lower side of the cutter body; the lifting driving device is connected to the upper side of the cutter body, the cutting platform is arranged below the cutter body, the cutting platform is provided with a cutting groove corresponding to the projection position of the cutter body, the shape of the cutting groove is matched with the horizontal projection shape of the cutter body, and an assembly gap is formed between the cutting groove and the outer side of the cutter body.

Further, the cutting end face is provided with an inclined face with an inclined angle relative to the horizontal plane, and the horizontal projection shape of the cutting end face is H-shaped, and comprises straight edges vertically arranged at two sides, connecting edges positioned at four corner side positions and concave positions of which two ends are concave inwards at the central position.

Further, the inclination angle of the cutting end face with respect to the horizontal plane is in the range of 0.1 ° to 6 °.

Further, in the horizontal projection shape of the cutting end face, the connecting edges at the four corners are all inclined towards the inner side; the connecting edge and the straight edge are in arc transition.

Further, the concave position is arranged in a V shape; the V-shaped central connection part is arranged in a circular arc transition way; the inclined side slope of the V-shaped concave position ranges from 5 degrees to 35 degrees.

Further, the concave position is arranged in a circular arc shape.

Further, the concave position is arranged in a semicircular shape.

The magnetic core winding system comprises a frame, wherein a belt material disc, a belt material cutting part and a magnetic core preparation part are sequentially arranged in the direction from a feeding end to a discharging end of the frame; the strip cutting part comprises the strip cutting device, the magnetic core preparation part comprises a winding device for winding the input alloy strip, a welding device for welding a cutting port of the alloy strip after winding and the surface of the magnetic core, and a knocking device for knocking the side end face of the magnetic core after welding.

Further, a strip guiding device is arranged between the strip material disc and the strip cutting part, the strip guiding device comprises a clamping mechanism used for clamping and driving displacement of the alloy strip, a roller set formed by combining a plurality of rollers and used for adjusting an output path of the alloy strip is arranged between the clamping mechanism and the strip material disc, and a detection device used for judging and detecting breakage of the alloy strip is arranged between the roller set and the clamping mechanism; and a magnetic device is arranged in the clamping mechanism.

Further, the discharge end of the magnetic core preparation portion is provided with a magnetic core collection portion, the magnetic core collection portion comprises a receiving guide groove for guiding the coiled magnetic core output by the magnetic core preparation portion in a moving mode, and the guide end of the receiving guide groove is provided with a receiving tray.

The utility model has the beneficial effects that:

the application of the strip cutting device is based on the arrangement of the columnar cutter body, so that the sectional cutting can be effectively carried out on the alloy strip Jin Daicai, and the cutting treatment can be completed in three sections; compared with the traditional mode that the straight blade is directly cut and divided into two sections of strips, the cutting ports of the first material section and the second material section obtained by dividing can be tidier, and the possibility of the phenomenon of warping after the magnetic core is wound and processed is reduced.

After the strip is cut by the strip cutting device in the magnetic core winding system, the strip is wound, welded and knocked by the magnetic core preparation part, so that the high-efficiency preparation requirement of the wound magnetic core is met.

Drawings

FIG. 1 is a schematic view of an arrangement of a tape cutting apparatus of the present utility model;

FIG. 2 is a schematic view of the tape cutting apparatus of the present utility model;

FIG. 3 is a schematic view showing the cross-sectional configuration and shape of a strip obtained by cutting in accordance with application example 1 of the cutter body of the present utility model;

FIG. 4 is a schematic view showing the cross-sectional configuration and shape of a strip obtained by cutting in accordance with application example 2 of the cutter body of the present utility model;

FIG. 5 is a schematic view of an arrangement of a first magnetic core;

FIG. 6 is a schematic diagram of an arrangement of a second magnetic core;

FIG. 7 is a schematic diagram of a third magnetic core arrangement;

FIG. 8 is a schematic diagram of a fourth magnetic core arrangement;

FIG. 9 is a force analysis diagram of a first magnetic core;

FIG. 10 is a force analysis diagram of a second magnetic core;

FIG. 11 is a force analysis diagram of a third magnetic core;

FIG. 12 is a force analysis diagram of a fourth magnetic core;

fig. 13 is a schematic view of a magnetic core winding system of the present utility model.

Reference numerals illustrate:

the cutter body 1, a cutting end face 11, a straight edge 111, a connecting edge 112, a concave position 113,

Cutting table 2, cutting groove 21, fitting gap 22,

Alloy strip 3, raised portion 30, first segment 31, second segment 32,

A first magnetic core 401, a second magnetic core 402, a third magnetic core 403, a fourth magnetic core 404, a cutting port 41, a junction 411, a V-shaped central connection 412, an edge 42, a welding zone 43, a winding direction 44, a magnetic core surface 45,

The apparatus includes a frame 51, a tape tray 52, a tape guiding device 53, a clamping mechanism 531, a roller train 532, a support table 533, a detecting device 534, a tape cutting unit 54, a core preparation unit 55, a winding device 551, a welding device 552, a knocking device 553, and a core collecting unit 56.

Detailed Description

In order to make the technical scheme, the purpose and the advantages of the utility model more clear, the utility model is further explained below with reference to the drawings and the embodiments.

As shown in fig. 1 to 4, a tape cutting device of the present utility model is provided as follows:

including the cutter body 1 of column setting, lift drive is connected to cutter body 1 upside, cutter body 1 below sets up cutting platform 2, correspond among the cutting platform 2 the projection position of cutter body 1 sets up cutting groove 21, the shape of cutting groove 21 with the horizontal projection shape cooperation of cutter body 1, cutting groove 21 with have fit-up gap 22 between the cutter body 1 outside.

The strip is input between the cutting platform 2 and the cutter body 1, the lifting driving device drives the cutter body 1 to fall, the matching edge between the falling cutter body 1 and the cutting groove 21 forms a cutting action matched up and down on the strip, and the strip is divided into a first material section 31 positioned at one side of the discharging end of the cutting platform 2, a second material section 32 positioned at one side of the feeding end of the cutting platform 2 and a third material section falling into the cutting groove 21.

Example 1:

in a preferred embodiment, the cutter body 1 of the strip cutting device according to the utility model is applied with a lower side provided with a cutting end face 11, said cutting end face 11 being provided as an inclined face having an inclination angle with respect to the horizontal plane.

When the cutter body 1 contacts the alloy strip 3 with the cutting end face 11, the cutter body 1 contacts one side edge of the alloy strip 3 in the width direction, and the concentrated stress causes the position of one side of the alloy strip 3 to be cracked and local fault to be caused; along with the falling and pushing of the cutter body 1, the cutter body 1 is guided along with the two side edges of the cutting end face 11, so that the fault breaks the strip.

Therefore, the cutting positions of the first material section 31 and the second material section 32 of the alloy strip 3 are subjected to the breaking pressure along the width direction of the alloy strip 3 by the inclined surfaces during the cutting process.

By the application of the structure, the cutter body 1 can more easily and effectively cut the alloy strip Jin Daicai 3 based on the application of breaking pressure, and the possibility of subsequent processing and production of the 'raised edges' of the wound magnetic core due to the fact that the tail end position of the alloy strip 3 has corresponding stress accumulation due to cutting fracture is reduced.

The angle of inclination of the cutting end face 11 with respect to the horizontal is in the range of 0.1 ° to 6 °, preferably set to 3 °; the inclination angle is determined depending on the cutting toughness and breaking strength of the cut alloy strip 3. The greater the cutting toughness and the higher the breaking strength of the cut alloy strip 3, the greater the desired angle of inclination of the cut end face 11 with respect to the horizontal. When the cutting toughness and the breaking strength of the alloy strip 3 are significantly increased, the angle range of the cut end face 11 needs to be set larger.

As a further preferred embodiment of the fit-up, the setting of the fitting gap 22 is in the range of 0.2-0.6mm, the setting size of the fitting gap 22 being determined depending on the thickness and the cutting toughness of the alloy strip 3. The greater the thickness of the alloy strip 3, the less the cutting toughness, the greater the assembly gap 22 required. The thicker the alloy strip 3 is, the more fragile the material is, the larger the range of the fitting gap is required.

Example 2:

in order to further reduce the possibility of "edge tilting" in the winding magnetic core processing, in the structure of the cutter body 1 of the present utility model, the horizontal projection shape of the cutting end face 11 is H-like, and the horizontal projection shape includes straight edges 111 vertically arranged at two sides, connecting edges 112 at four corner sides, and concave positions 113 at the central positions at two ends; the inclined direction of the inclined surface is along the connection direction of the straight sides 111. In the horizontal projection shape of the cut end surface 11, the connecting edges 112 at the four corners are all inclined toward the inner side, and the connecting edges 112 and the straight edges 111 are arranged in a circular arc transition.

As an embodiment, the concave portion 113 is V-shaped, and the V-shaped central connection portion 412 is arranged in a circular arc transition manner; the slope theta 1 of the oblique side of the V-shape is set to be 5-35 DEG with respect to the connection direction of the concave portions 113 at the opposite ends; the inclination angle theta 2 of the connecting edge 112 is set to be greater than the inclination angle theta 1 of the V-shaped hypotenuse.

Alternatively, the concave portion 113 may be circular arc, and preferably is semicircular.

Taking the connecting direction of the straight edges 111 at two sides of the cutter body 1 as the width direction and the connecting direction of the concave positions 113 at two ends as the length direction; the alloy strip 3 is centrally input along the length direction of the cutter body 1 and corresponds to the concave positions 113 at the two ends, and the width of the alloy strip 3 is within the width range of the cutter body 1. When the cutter body 1 is cut by the involution Jin Daicai 3, the centers of the cutting position tail ends of the first material section 31 and the second material section 32 of the cut alloy strip 3 form convex positions 30 protruding towards the cutting platform 2 side, and the convex positions 30 are matched with the concave positions 113 in shape; the convex portion 30 is preferably circular arc-shaped or semicircular.

Therefore, during the cutting process, the cutting positions of the first and second material sections 31 and 32 of the alloy strip 3 are subjected to the cutting pressure concentrated toward the inside of the cutting groove 21 and toward the center by the connecting edges 112 and the concave portions 113 on both sides of the cutter body 1. After the cutting pressure, the cutting positions of the first material section 31 and the second material section 32 form a convex position 30 protruding towards the inner side of the cutting groove 21, and the convex position 30 is in a V shape or an arc shape.

As shown in fig. 5 to 12, the wound magnetic core structure obtained by winding the alloy strip 3 cut by the different cutter bodies 1 is demonstrated, and the mechanical analysis of the cutting position of the wound end section (first material section 31) of each cut alloy strip 3 is clarified.

The alloy strip 3 with the first magnetic core 401 is cut by a cutter body 1 with a square cutting end face 11, after cutting, the cutter body does not have a convex part 30, and a cut port 41 obtained by cutting is in a straight shape.

The alloy strip 3 for processing the second magnetic core 402 is cut by adopting the cutter body 1 with the V-shaped concave position 113 on the cutting end face 11, the cut cutting port 41 is V-shaped, and the V-shaped central connection part 412 of the cutting port 41 is in angle folding transition.

The alloy strip 3 for processing the third magnetic core 403 is cut by adopting the cutter body 1 with the V-shaped concave position 113 on the cutting end face 11, the cut cutting port 41 is V-shaped, and the V-shaped central connection part 412 of the concave position of the cutting port 41 has arc transition.

The alloy strip 3 with the fourth magnetic core 404 is cut by the cutter body 1 with the cutting end face 11 provided with the arc-shaped concave position 113, so that the cut port 41 is arc-shaped.

In the application of the first to fourth magnetic cores 401 to 404, the situation of stepwise optimization selection of the cutting ports 41 (the cutting positions of the first material segments 31) of the alloy strip 3 is the case, wherein the cutting ports 41 of the alloy strip 3 and the widthwise both side edges 42 of the strip form the both side junctions 411, respectively; in the preparation of the wound core, the weld Jin Daicai 3 is welded, with the weld zone 43 being located at the intersection of the bead 30 and the underlying strip, so that the cut port 41 of the corresponding core is in welded close engagement with the core surface 45.

The two-dimensional coordinate axes of the partial region formed by taking the direction perpendicular to the tape winding direction 44 as the x-axis direction and the direction parallel to the tape winding direction 44 as the y-axis direction are described; the welding paths of the welding areas 43 are arranged along the 4-axis direction, and the welding areas 43 are arranged into two groups along the x-axis direction; the distance between the center of the connection between the two sets of welding zones 43 and the center of the two-sided junction 411 of the strip is h, h=0 in the first core 401, and h > 0 in the arrangement of the second core 402 to the fourth core 404. The distance h is set in the same direction as the x-axis direction.

Mechanical analysis is performed on the cut port 41 of the first magnetic core 401, and the mechanical analysis shows that: the direction of the force applied by the welding zone 43 at the two-side junction 411 between the two-side edges 42 of the alloy strip 3 of the first magnetic core 401 and the in-line cutting port 41 is perpendicular to the strip winding direction 44, and only the tension component F perpendicular to the strip winding direction 44 _x ，F _x > 0; without a tension component F parallel to the direction of winding 44 of the strip _y ，F _y =0; i.e.F _1x ＝F，F _2x ＝-F，F _1y ＝F _2y ＝0。

Then, mechanical analysis is performed on the cut ports 41 applied to the second to fourth magnetic cores 402 to 404, and the mechanical analysis shows that: the direction in which the welding zone 43 acts on the junction 411 between the edges 42 on both sides of the alloy strip 3 and the cutting port 41 and the winding direction 44 of the alloy strip 3With an angle such that its application has a tension component perpendicular to the direction of web winding 44 and parallel to the direction of web winding 44, i.eF _1x ＞0，F _2x ＜0，F _1y ＝F _2y > 0. When parallel to the direction of winding 44 of the strip _y At > 0, junction 411 may be subjected to a pulling force acting in the direction of tape winding 44 to draw the partial tape at junction 411 closer to core surface 45.

Since fy=0 in the first core 401 and Fy > 0 in the second to fourth cores 402 to 404, the shape of the cut port 41 of the second to fourth cores 402 to 404 is more conducive to the improvement of the degree of adhesion between the tape cut port 41 and the core surface 45 than the shape of the cut port 41 of the first core 401, and the improvement of the core-up phenomenon according to the above theory.

The difference between the cut ports 41 of the two cores, compared to the second core 402 and the third core 403, is the V-shaped central junction 412 where the lands 30 are located, one with a corner transition and the other with an arc transition.

After the cutting position is fixed on the magnetic core surface 45 through the welding procedure, on the one hand, the magnetic core can be subjected to the action of the air flow of the spray gun in the spraying procedure, when the air flow carrying spray sol particles acts on the vertex of the V-shaped central connecting position 412 of the outer edge of the cutting port 41 along the y-axis direction at a certain flow rate, the probability of occurrence of an eversion event of the local strip at the vertex of the V-shaped central connecting position 412 of the second magnetic core 402 is increased under the action of the air flow of the spray gun due to the small acting surface area and the strong pressure of the vertex of the V-shaped central connecting position 412 of the second magnetic core 402, and the bad appearance of the tilted sheet is easy to form, and the probability of occurrence of the eversion event of the local strip at the vertex of the V-shaped central connecting position 412 of the third magnetic core 403 is reduced due to the relatively large acting surface area and the small pressure of the vertex of the V-shaped central connecting position 412 of the third magnetic core 403, and the attaching flat state of the magnetic core surface 45 can be basically maintained.

On the other hand, the cutting port 41 of the alloy strip 3 is limited by the welding area 43, the stress included angle α of the V-shaped central connection 412 in the structure of the third magnetic core 403 is larger than the stress included angle α of the V-shaped central connection 412 in the structure of the second magnetic core 402, the alloy strip 3 at the transition point in the third magnetic core 403 can form a fit with the magnetic core surface 45 under the action of the tensile force adopting the circular arc structure, and the strip at the transition point in the second magnetic core 402 is more prone to form a certain gap with the magnetic core surface 45 under the action of the tensile force adopting the folded angle structure.

Therefore, the V-shaped central connection 412 of the cutting port 41 of the strip material adopts a circular arc structure to make transition more beneficial to improving the adhesion degree between the cutting port 41 of the strip material and the magnetic core surface 45 than adopting a bevel structure, and improving the bad phenomenon of fin.

The structure of the cutting port 41 of the third magnetic core 403 and the structure of the cutting port 41 of the fourth magnetic core 404 are compared in a similar way, because the stress included angle beta of the intersection point 411 of the cutting port 41 and the edges 42 on two sides of the strip in the third magnetic core 403 is smaller than 180 degrees, the area of the action surface of the intersection point 411 under the action of air flow in the spraying process is small; the forced included angle β=180° of the intersection point 411 between the cutting port 41 and the edges 42 on both sides of the strip in the fourth magnetic core 404, so that the area of the acting surface of the intersection point 411 under the action of air flow is relatively large during the spraying process; therefore, the semicircular shape structure of the cutting port 41 is more conducive to tightly attaching the cutting port 41 of the strip to the magnetic core surface 45 than the V-shaped structure with arc transition at the central joint 412, and the problem of poor appearance of the magnetic core surface 45 caused by the fins is solved.

The structural arrangement of the cutter body 1 and the width relation of the alloy strip 3 input to the cutter body are as follows:

on the one hand, as in the cutter body application example 1 of fig. 3, the width of the alloy strip 3 is optionally larger than the arrangement width of the concave portion 113 and smaller than the width arrangement range of the straight edges 111 on both sides; the alloy strip 3 is centrally fed into the cutting area of the cutter body 1, and the cut position of the first material section 31 of the alloy strip 3 after cutting forms a cutting shape of the convex portion 30 formed by combining the connecting edges 112 on two sides with the concave portion 113.

The cutter body 1 is provided with a connecting edge 112 and a concave position 113 based on the horizontal projection shape of the cutting end surface 11, and an inclination progressive arrangement which is further arranged towards the center of the inner side of the cutter body 1 is arranged between the connecting edges 112 of the two sides and the concave position 113; when the alloy strip 3 with wider width is cut, the cutting pressure which is respectively brought by the connecting edge 112 and the concave position 113 and is concentrated towards the cutting groove (the cutter body side) is respectively received, so that the cutting stress applied to the cutting position of the alloy strip 3 can be relatively concentrated towards the center of the cutting position, and the degree of forming a fin at the cutting position of the alloy strip 3 when the alloy strip 3 is wound to prepare a winding magnetic core later can be effectively reduced.

On the other hand, as set in application example 2 of the cutter body of fig. 4, if the width of the alloy strip 3 is optionally equal to or smaller than the concave portion 113, and the alloy strip 3 is centrally fed into the cutting range of the cutter body 1, the cutting position of the first material section 31 of the alloy strip 3 after cutting forms a cutting shape which is partially identical to the concave portion 113 of the cutter body 1. Preferably, the concave portion 113 of the cutter body 1 is arranged in a semicircular shape, and the width of the alloy strip 3 is equal to the diameter of the concave portion 113.

Example 3:

as shown in fig. 13, the application of the tape cutting device is based on the above; to meet the full-process automated production requirements of wound core preparation, this embodiment further provides a core winding system for illustration.

The magnetic core winding system comprises a frame 51, and a belt material disc 52, a belt material guiding device 53, a belt material cutting part 54, a magnetic core preparation part 55 and a magnetic core collecting part 56 which are sequentially arranged in the direction from the feeding end to the discharging end of the frame 51. The coil plate 52 is used for placing a coiled disc-shaped alloy strip 3, the alloy strip 3 is driven and led out by a strip guiding device 53, and then one end of the alloy strip 3 is connected to a magnetic core preparation part 55 through a strip cutting part 54 for preparation of coiling operation.

The tape cutting portion 54 includes a tape cutting device to which the above embodiment is applied.

The strip guiding device 53 comprises a clamping mechanism 531 for clamping and driving the alloy strip 3 to move, a roller set 532 formed by combining a plurality of rollers for adjusting the output path of the alloy strip 3 is arranged between the clamping mechanism 531 and the strip material disc 52, a supporting platform 533 is arranged between the roller set 532 and the clamping mechanism 531, a detection device 534 for detecting the breakage judgment of the alloy strip 3 is arranged at the feeding end side of the supporting platform 533, and a magnetic device is arranged in the clamping mechanism 531.

The core preparation section 55 includes a winding device 551 for winding the input strip, a welding device 552 for welding the cut port 41 of the strip after the winding process and the core surface 45, and a hammering device 553 for hammering the side end face of the wound core after the welding process; then, after the input alloy strip 3 is wound in the winding device 551 to meet the standard of a specific layer number and a specific size, the alloy strip 3 is cut by the strip cutting device, and then the welding device 552 performs welding treatment on the cut port 41 of Jin Daicai and the magnetic core surface 45 formed by winding; after the welding process, the knock-out device 553 located on the side of the side end face of the molded wound core presses against the side end face of the core, and the knock-out process is performed on the wound core.

After the alloy strip 3 is comprehensively processed in the magnetic core preparation part 55, an independent wound magnetic core product is formed, and the wound magnetic core product is uniformly collected by the magnetic core collecting part 56; the core collecting unit 56 includes a receiving guide groove for guiding the movement of the wound core outputted from the core preparing unit 55, and a receiving tray is provided at the guide end of the receiving guide groove.

The operation of the magnetic core winding system is described as follows:

1) Rolling the alloy strip 3 cut according to the required width into a raw material disc, placing the rolled raw material disc in a belt material disc 52 in a mode of being vertical to the horizontal plane, and leading out one end of the alloy strip 3 from the outermost side of the raw material disc;

2) The alloy strip 3 led out from the strip material disc 52 sequentially passes through rollers at different positions in the roller group 532 to guide the alloy strip 3 to be output, and the output alloy strip 3 is in a continuously and smoothly moving state in the transmission and position application of the rollers;

3) The alloy strip 3 output by the roller group 532 reaches the supporting platform 533, and the detection device 534 at the feeding end side of the supporting platform 533 detects and judges whether the continuous alloy strip 3 breaks before reaching the supporting platform 533; if the fracture condition is found, an instruction is required to be sent to the control panel, so that an alarm prompt is given;

4) The alloy strip 3 passing through the detection device 534 passes through the supporting platform 533 and is connected to the clamping mechanism 531, and under the bearing of the supporting platform 533, the alloy strip 3 sections between the supporting platform 533 and the winding device 551 are positioned at the same horizontal plane position, so that the clamping mechanism 531 can be ensured to effectively guide the alloy strip 3 into the winding device 551 directly through translation operation, and the stability of strip tension control due to the self gravity of local strips in the area is avoided;

5) One end of the alloy strip 3 extends out of the clamping mechanism 531, and under the clamping and guiding action of the clamping mechanism 531, the extending alloy strip 3 section passes through a position between the lower side of the cutter body 1 and the cutting platform 2 and reaches the output end of the strip cutting device; in the clamping process of the clamping mechanism 531, the magnetic device is electrified, so that the clamping mechanism 531 has certain magnetic adsorption capacity, and the stability of clamping the strip is ensured more effectively.

6) The strip cutting device executes a cutting command for the first time; after cutting, the head end of the alloy strip 3 is cut with a cutting port 41 of a specific shape; driving the clamping mechanism 531 to displace along the horizontal direction, wherein the output end of the clamping mechanism 531 drives alloy raw materials cut out of the cutting port 41 to be pushed into the winding device 551 through the position of the strip cutting device, the core mould in the winding device 551 stretches out, and the cutting port 41 abutting against the head end of the alloy strip 3 is fixed by the notch;

7) After the first end of the alloy strip 3 is fixed in the core mold, the clamping mechanism 531 releases the clamping restriction on the alloy strip 3 and returns to the input end side of the strip cutting device; the core mould starts to rotate around the shaft, and the magnetic core starts to wind; in the winding process, the magnetic devices in the clamping mechanism 531 still continuously adsorb the raw material strips, provide continuous and stable tension for the input wound alloy strip 3, and adjust the gap between the layers of the wound alloy strip 3 so as to obtain proper winding tightness of the wound magnetic core obtained by processing;

8) The outer diameter limiter is arranged on the periphery of the winding device 551, when the outer diameter of the magnetic core is detected to be wound to the target size, a signal is transmitted to the core mold, and the magnetic core stops winding;

9) After the winding of the magnetic core is stopped, the strip cutting device starts the cutting action again to finish the end port cutting of the alloy strip 3;

10 After the re-cutting operation is completed, the welding device 552 contacts the outer surface of the magnetic core, the auxiliary rotation of the core mold is controlled, the welding device 552 completes the operation of double-line welding on the periphery of the magnetic core, and the strip cutting port 41 of the inner ring of the magnetic core is subjected to spot welding to complete the welding of the magnetic core;

11 A knocking device 553 is driven, and the knocking device 553 presses and knocks the magnetic core by a mechanism positioned at the winding end surface positions at two sides of the magnetic core; the height of the magnetic core is controlled to fluctuate within a positive tolerance range of the width of the strip, and the risk of collision and breakage of the strip protruding partially from the magnetic core in the production process is reduced, so that the appearance of a finished product of the magnetic core is affected;

12 After the end face of the magnetic core is knocked flat, the core mould is retracted, the coiled magnetic core falls into the material receiving guide groove, and the magnetic core slides into the material receiving tray along the inclined direction of the material receiving guide groove;

13 A command returns to step 6) to connect the head end of the next alloy strip 3 cut by the clamping device into the mandrel and continue to start winding the core;

14 Repeating the above operation until the number of winding cores reaches the required number, and commanding termination.

The foregoing is merely a preferred embodiment of the present utility model, and modifications of the embodiments described above can be made by those skilled in the art without departing from the implementation principles of the present utility model, and the corresponding modifications should also be considered as the protection scope of the present utility model.

Claims (10)

1. The strip cutting device is characterized by comprising a columnar vertically arranged cutter body, wherein a cutting end face is arranged on the lower side of the cutter body; the lifting driving device is connected to the upper side of the cutter body, the cutting platform is arranged below the cutter body, the cutting platform is provided with a cutting groove corresponding to the projection position of the cutter body, the shape of the cutting groove is matched with the horizontal projection shape of the cutter body, and an assembly gap is formed between the cutting groove and the outer side of the cutter body.

2. The strip cutting device as in claim 1, wherein the cutting end face is provided as an inclined face having an inclination angle with respect to a horizontal plane, and a horizontal projection shape of the cutting end face is H-like, the horizontal projection shape including straight edges vertically provided at both sides, connecting edges at four corner side positions, and concave positions of both ends at a central position concave toward the inner side.

3. The strip cutting device of claim 2, wherein the angle of inclination of the cutting end face with respect to the horizontal is in the range of 0.1 ° to 6 °.

4. The strip cutting device as claimed in claim 2, wherein in the horizontal projection shape of the cut end face, the connecting edges at four corners are all inclined toward the inside; the connecting edge and the straight edge are in arc transition.

5. The strip cutting device as in any one of claims 2 to 4, wherein the concave portion is provided in a V-shape; the V-shaped central connection part is arranged in a circular arc transition way; the inclined side slope of the V-shaped concave position ranges from 5 degrees to 35 degrees.

6. The strip cutting device as in any one of claims 2 to 4, wherein the concave portion is configured in a circular arc shape.

7. The web cutting apparatus of claim 6 wherein the concave portion is configured in a semi-circular shape.

8. The magnetic core winding system is characterized by comprising a rack, wherein a belt material disc, a belt material cutting part and a magnetic core preparation part are sequentially arranged in the direction from a feeding end to a discharging end of the rack; the strip cutting section includes a strip cutting device to which the strip cutting device according to any one of claims 1 to 7 is applied, and the core preparation section includes a winding device that winds an input alloy strip, a welding device that welds a cut port of the wound alloy strip to a core surface, and a striking device that strikes a core-side end surface after the welding.

9. The magnetic core winding system according to claim 8, wherein a strip guiding device is provided between the strip tray and the strip cutting portion, the strip guiding device includes a clamping mechanism for clamping and driving displacement of the alloy strip, a roller group formed by combining a plurality of rollers for adjusting an output path of the alloy strip is provided between the clamping mechanism and the strip tray, a detecting device for detecting breakage determination of the alloy strip is provided between the roller group and the clamping mechanism, and a magnetic device is provided in the clamping mechanism.

10. The magnetic core winding system of claim 9, wherein the discharge end of the magnetic core preparation portion is provided with a magnetic core collection portion, the magnetic core collection portion includes a material receiving guide groove for guiding movement of the wound magnetic core output from the magnetic core preparation portion, and the guide end of the material receiving guide groove is provided with a material receiving tray.