CN212909955U - Magnetic circuit's equipment tool - Google Patents

Abstract

The application discloses magnetic circuit's equipment tool. This equipment tool includes first equipment tool, and first equipment tool includes: the first carrying platform is provided with a first positioning groove for positioning the annular peripheral wall of the magnetic conduction cover; the second microscope carrier is provided with a guide channel, assembled with the first microscope carrier in an alignment mode and inserted into the containing cavity of the magnetic conduction cover so as to position an assembling area assembled with the bottom magnetic plate on the bottom wall, and the bottom magnetic plate is placed into the containing cavity through the guide channel and then can be assembled and fixed with the assembling area of the bottom wall and is spaced from the annular peripheral wall. Through the mode, the assembling jig provided by the application can ensure that the assembling positions of the bottom magnetic plate and the magnetic conduction cover are accurate.

Description

Magnetic circuit's equipment tool

Technical Field

The application relates to the technical field of jigs, in particular to an assembling jig of a magnetic circuit system.

Background

In the development process of the bone conduction earphone technology, the original magnetic circuit system is optimized, a new magnetic circuit system structure is provided, and new requirements are provided for an assembly jig of the bone conduction earphone structure based on the new magnetic circuit system structure.

SUMMERY OF THE UTILITY MODEL

The application mainly provides a magnetic circuit's equipment tool to solve the magnetic circuit equipment in-process, magnetic circuit's end magnetic plate and the inaccurate problem of magnetic conduction cover mounted position.

In order to solve the technical problem, the application adopts a technical scheme that: an assembling jig for a magnetic circuit system is provided. This equipment tool includes first equipment tool, and first equipment tool includes: the first carrying platform is provided with a first positioning groove for positioning the annular peripheral wall of the magnetic conduction cover; the second microscope carrier is provided with a guide channel, assembled with the first microscope carrier in an alignment mode and inserted into the containing cavity of the magnetic conduction cover so as to position an assembling area assembled with the bottom magnetic plate on the bottom wall, and the bottom magnetic plate is placed into the containing cavity through the guide channel and then can be assembled and fixed with the assembling area of the bottom wall and is spaced from the annular peripheral wall.

The beneficial effect of this application is: being different from the situation of the prior art, the application discloses an equipment tool of magnetic circuit. Through setting up first microscope carrier and second microscope carrier, wherein first microscope carrier is equipped with the first positioning groove that is used for fixing a position the annular perisporium of magnetic conduction cover, and the second microscope carrier is equipped with the direction passageway, and second microscope carrier and first microscope carrier counterpoint assembly, and then the second microscope carrier inserts the holding intracavity of magnetic conduction cover, fix a position out the assembly region with end magnetic sheet looks assembly on the diapire, make end magnetic sheet can be fixed with this assembly region assembly via the direction passageway, thereby ensure that end magnetic sheet and magnetic conduction cover assembly position are accurate.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts, wherein:

fig. 1 is a schematic cross-sectional view of a magnetic circuit system of the present application;

FIG. 2 is an exploded view of the magnetic circuit system of FIG. 1;

FIG. 3 is a schematic diagram of an embodiment of an automated assembly system provided herein;

fig. 4 is a schematic structural diagram of an embodiment of a second assembly jig in the assembly jig of the present application;

fig. 5 is a schematic top view of the third stage of the second assembly fixture of fig. 4;

fig. 6 is a schematic structural diagram of an embodiment of a first assembly jig in the assembly jig of the present application;

fig. 7 is a schematic cross-sectional exploded view of the first assembly jig shown in fig. 6;

fig. 8 is a schematic structural diagram of a third assembly fixture in the assembly fixture of the present application;

fig. 9 is a schematic structural diagram of the fourth stage and the fifth stage in fig. 8;

fig. 10 is a schematic structural view of a positioning carrier in the third assembly fixture of fig. 8;

FIG. 11 is a schematic structural view of an embodiment of the plastic part assembling apparatus shown in FIG. 3;

FIG. 12 is a schematic diagram of an embodiment of the flux cap assembly apparatus of FIG. 3;

FIG. 13 is a schematic diagram of the construction of one embodiment of the product assembly apparatus of FIG. 3;

FIG. 14 is a schematic view of the construction of the flipping mechanism of FIG. 13;

FIG. 15 is a schematic view of the guide press of FIG. 13;

fig. 16 is a schematic structural view of the jack mechanism in fig. 13.

Detailed Description

Referring to fig. 1 to 2, fig. 1 is a schematic cross-sectional structure diagram of a magnetic circuit system of the present application, and fig. 2 is an exploded schematic view of the magnetic circuit system shown in fig. 1.

The magnetic circuit 5 is an important component of the bone conduction earphone and functions to provide a constant magnetic field. The constant magnetic field is further matched with a variable magnetic field generated by the voice coil in a power-on state, converts an electric signal into mechanical vibration, and directly transmits the mechanical vibration to auditory nerves through bones and human tissues, so that a user can generate auditory response.

As shown in fig. 1, the magnetic circuit system 5 includes a magnetic conductive cover 51, a bottom magnetic plate 52, a magnetic conductive plate 53, a top magnetic plate 54, and a plastic part 55. The magnetic conducting cover 51 includes a bottom wall 512 and an annular peripheral wall 514 connected to the bottom wall 512, thereby forming an accommodating cavity 516. The bottom magnetic plate 52, the magnetic conducting plate 53, the top magnetic plate 54 and the plastic part 55 are accommodated in the accommodating cavity 516 and sequentially stacked on the bottom wall 512, wherein the adjacent end surfaces of the bottom magnetic plate 52 and the top magnetic plate 54 have the same polarity.

It should be noted that "bottom" and "top" of bottom magnetic plate 52 and top magnetic plate 54 are used to describe the positional relationship between the two relative to bottom wall 512, and specifically, in the stacked structure shown in fig. 1, bottom magnetic plate 52 is closer to bottom wall 512 than top magnetic plate 54.

In the above-mentioned magnetic circuit system 5, because the bottom magnetic plate 52, the magnetic conductive plate 53, the top magnetic plate 54 and the plastic part 55 need to be stacked and disposed in the accommodating cavity 516 with a relatively small space, and the polarities of the adjacent end surfaces of the bottom magnetic plate 52 and the top magnetic plate 54 are the same, the assembly difficulty of the magnetic circuit system 5 is increased, so in the present application, the magnetic circuit system 5 is assembled step by step through various assembling jigs and assembling devices described below, so as to reduce the assembly difficulty.

As shown in fig. 2, in the assembling process of the magnetic circuit system 5, the plastic part 55 and the top magnetic plate 54 are firstly stacked and assembled to form the first semi-finished product 550, the bottom magnetic plate 52 and the magnetic conductive cover 51 are assembled to form the second semi-finished product 510, the magnetic conductive plate 53 and the first semi-finished product 550 are sequentially stacked on the bottom magnetic plate 52, and the first semi-finished product 550, the magnetic conductive plate 53 and the second semi-finished product 510 are fastened to form the magnetic circuit system 5.

Specifically, the first semi-finished product 550 includes a top magnetic plate 54 and a plastic part 55 that are stacked and fixed to each other, and the second semi-finished product 510 includes a magnetic conductive cover 51 and a bottom magnetic plate 52 that is accommodated in the accommodating cavity 516 and fixed to the bottom wall 512.

Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of an automatic assembly system provided in the present application.

The automatic assembly system 100 comprises an assembly jig and an automatic assembly device, wherein the assembly jig comprises a second assembly jig 12, a first assembly jig 14 and a third assembly jig 16, and the automatic assembly device comprises a plastic part assembly device 2, a magnetic conduction cover assembly device 3 and a finished product assembly device 4.

The plastic part assembling equipment 2 is used for laminating and fixing the top magnetic plate 54 and the plastic part 55 through the second assembling jig 12 to form a first semi-finished product 550; the magnetic conduction cover assembling device 3 is used for placing the bottom magnetic plate 52 into the accommodating cavity 516 through the first assembling jig 14 and laminating and fixing the bottom magnetic plate with the bottom wall 512 of the magnetic conduction cover 51 to form a second semi-finished product 510; the finished product assembling device 4 is used for laminating and fixing the first semi-finished product 550 and the magnetic conductive plate 53 on the bottom magnetic plate 52 through the third assembling jig 16.

Referring to fig. 4 and 5, the second assembly fixture 12 includes a third carrier 120 and a first magnetic attraction element 122, the third carrier 120 is provided with a second positioning groove 1210, a third positioning groove 1211 and an accommodating groove 1212, which are sequentially communicated from the surface of the third carrier 120 to the inside, the third positioning groove 1211 is disposed at the bottom of the second positioning groove 1210, the accommodating groove 1212 is disposed at the bottom of the third positioning groove 1211, and the first magnetic attraction element 122 is disposed in the accommodating groove 1212.

The second positioning groove 1210 is used for positioning the top magnetic plate 54, the third positioning groove 1211 is used for positioning the plastic part 55, and the first magnetic part 122 is used for magnetically attracting the top magnetic plate 54 and preventing the magnetic poles of the top magnetic plate 54 from being reversely installed.

When the first semi-finished product 550 is assembled, the plastic part 55 and the top magnetic plate 54 are sequentially disposed in the third positioning groove 1211 and the second positioning groove 1210, and the top magnetic plate 54 disposed in the second positioning groove 1210 is stacked and bonded to the plastic part 55 to form the first semi-finished product 550. In other embodiments, the plastic part 55 and the top magnetic plate 54 may be fixed by heat fusion or other fixing methods.

The third stage 120 is made of a non-magnetic material, which has neither magnetism nor can be magnetized, for example, the third stage 120 is made of stainless steel or copper. The edge of the open end of the second positioning groove 1210 may also be chamfered to facilitate assembly of the top magnetic plate 54.

The bottom of the second positioning groove 1210 is further provided with a first vent hole 1213, the bottom of the third positioning groove 1211 is provided with a second vent hole 1214, and the aperture of the first vent hole 1213 is larger than that of the second vent hole 1214, so as to avoid a local positive pressure that may be formed when the loading plastic part 55 and the top magnetic plate 54 are assembled with the corresponding positioning groove, and avoid a bad influence of the local positive pressure on the positioning effect, thereby ensuring that the plastic part 55 and the top magnetic plate 54 are assembled in a stacked manner through the third carrier 120 with a good effect. Further, the first venting hole 1213 and the second venting hole 1214 can be further communicated to corresponding negative pressure devices, so as to provide negative pressure in the corresponding positioning slots, thereby accelerating the positioning process of the plastic part 55 and the top magnetic plate 54.

The accommodating groove 1212 includes a first cavity 1216 and two second cavities 1217 disposed on two sides of the first cavity 1216, the first cavity 1216 is communicated with the two second cavities 1217, the first cavity 1216 accommodates the first magnetic attraction 122, and the second cavities 1217 are used for avoiding the plastic part 55.

The side surface of the third carrying platform 120 is provided with a positioning part 1215, and the positioning part 1215 is used for cooperatively positioning the position of the third carrying platform 120 on the plastic part assembling apparatus 2. The positioning part 1215 may be a positioning groove, a positioning hole, etc.

Referring to fig. 6 and 7, the first assembly fixture 14 includes a first stage 140 and a second stage 142, the first stage 140 is provided with a first positioning groove 1402 for positioning the annular peripheral wall 514 of the magnetic conductive cover 51; the second stage 142 is provided with a guide channel 1422, the second stage 142 is assembled with the first stage 140 in an aligned manner, and then the second stage 142 is inserted into the accommodating cavity 156 of the magnetic conductive cover 51 of the first positioning groove 1402, so that the guide channel 1422 positions an assembling area on the bottom wall 512, where the bottom magnetic plate 52 is assembled with the bottom magnetic plate 52, and the bottom magnetic plate 52 is placed into the accommodating cavity 516 through the guide channel 1422, and then can be assembled and fixed with the assembling area on the bottom wall 512, and is spaced from the annular peripheral wall 514.

The bottom magnetic plate 52 is aligned and assembled with the assembly region through the guide channel 1422, and the bottom magnetic plate 52 and the bottom wall 512 are fixed, so that the magnetic conductive cover 51 and the bottom magnetic plate 52 are fixed in a stacked manner to form the second semi-finished product 510. The bottom magnetic plate 52 and the bottom wall 512 can be fixed by glue or other fixing methods.

Specifically, the first stage 140 is used to position the assembly area on the bottom wall 512, and then the bottom magnetic plate 52 is stacked on the assembly area, so that the bottom magnetic plate 52 and the bottom wall 512 are stacked and fixed at specific positions, a required gap is formed between the bottom magnetic plate 52 and the annular peripheral wall 514, and finally, the assembly accuracy of the magnetic conductive cover 51 and the bottom magnetic plate 52 is effectively improved, and the assembly difficulty is reduced.

Alternatively, the second carrier 142 may be a sleeve structure, the outer peripheral wall of the second carrier is attached to the inner side of the annular peripheral wall 514, and the wall thickness of the second carrier is set according to the required gap width between the bottom magnetic plate 52 and the annular peripheral wall 514 to occupy the non-assembly region in the accommodating cavity 516, so that the guide channel 1422 and the bottom wall 512 are located in the assembly region, and the bottom magnetic plate 52 is guided along the guide channel 1422 and is limited to be disposed in the assembly region.

In this embodiment, the second carrying table 142 includes a first sleeve 1421 and a second sleeve 1423 disposed on one side of the first sleeve 1421, the guiding channel 1422 penetrates through the first sleeve 1421 and the second sleeve 1423, the second sleeve 1423 is inserted into the accommodating cavity 516, and the first sleeve 1421 is stacked on the first carrying table 140 and assembled with the first carrying table 140 in an alignment manner.

By positioning the annular peripheral wall 514 by using the first positioning groove 1402 and aligning and assembling the first sleeve 1421 and the first carrier 140, excessive friction or collision between the second sleeve 1423 and the inner side of the annular peripheral wall 514 due to alignment deviation can be avoided in the process of inserting the second sleeve 1423 into the accommodating cavity 516, which is beneficial to reducing damage to the magnetic conductive cover 51 and improving positioning accuracy.

The height of the second sleeve 1423 along the extending direction of the guide channel 1422 is smaller than the depth of the accommodating cavity 516 in the extending direction, so as to prevent the second sleeve 1423 from abutting against the bottom wall 512, and thus the bottom wall 512 is prevented from being deformed.

The first carrying table 140 is further provided with a positioning column 144, the first sleeve 1421 is provided with a positioning hole 1424, and when the first sleeve 1421 and the first carrying table 140 are assembled in a positioning manner, the positioning column 144 correspondingly penetrates through the positioning hole 1424, so that the first carrying table 140 and the second carrying table 142 are assembled in a positioning manner through the positioning column 144 and the positioning hole 1424. In another embodiment, the first stage 140 may be provided with alignment holes, and the first sleeve 1421 may be provided with alignment posts.

In this embodiment, the magnetic conductive cover 51 is provided with a first through hole 511, the bottom magnetic plate 52 is provided with a second through hole 520, and the bottom of the first positioning slot 1402 is provided with a first avoiding hole 1406 corresponding to the first through hole 511 and the second through hole 520. The first and second through holes 511, 520 may be used for fasteners to pass through during subsequent assembly of the finished product.

The first avoiding hole 1406 is formed in the bottom of the first positioning groove 1402, so that when the bottom magnetic plate 52 is bonded to the bottom wall 512 in a glue mode, the glue for bonding can cover the first through hole 511 and the second through hole 520 with a high probability, and the glue is prevented from solidifying to block the first through hole 511 and the second through hole 520, so that the magnetic circuit system 5 cannot be fixed through a fastener during subsequent assembly. Meanwhile, if the glue solution is solidified and blocked, the first through hole 511 and the second through hole 520 can be dredged by adopting a rod piece through the first avoiding hole 1406.

The bottom of the first positioning groove 1402 is further provided with an air vent 1407 to prevent the magnetic conduction cover 51 from being placed in the first positioning groove 1402 so that the assembly is affected by local positive pressure.

The side wall of the first stage 140 is provided with a positioning portion 1404, and the positioning portion 1404 is used for defining the position of the first stage 140 on the magnetic conductive cover assembling apparatus 3. The positioning portion 1404 may be a positioning groove, a positioning hole, or the like.

Referring to fig. 8 to 9, the third assembly jig 16 includes a fourth stage 160 and a fifth stage 162, the fourth stage 160 is provided with a fourth positioning groove 1602 for positioning the magnetic conductive plate 53 and the first semi-finished product 550 at the same time, and the bottom of the fourth positioning groove 1602 is provided with a second avoidance hole 1601 for avoiding the first fastener; the fifth stage 162 is provided with a fifth positioning groove 1622 for positioning the second semi-finished product 510. The bottom of the fifth positioning groove 1622 is provided with a positioning hole 1621 for placing a second fastener.

The fourth carrying platform 160 is configured to be fastened to the fifth carrying platform 162 in an alignment manner, so that the first semi-finished product 550 borne by the fourth carrying platform 160, the magnetic conductive plate 53, and the second semi-finished product 510 borne by the fifth carrying platform 162 are stacked, and the first fastening member sequentially penetrates through the plastic part 55, the top magnetic plate 54, the magnetic conductive plate 53, the bottom magnetic plate 52, and the magnetic conductive cover 51 and is fixedly connected to the second fastening member located on one side of the magnetic conductive cover 51 departing from the plastic part 55.

In this embodiment, the first fastener may be a screw and the second fastener may be a nut; or the first fastener is a bolt, the second fastener is a buckle, and the bolt is clamped and fixed with the buckle.

In other embodiments, the second fastening member and the positioning hole 1621 may be eliminated, and the first semi-finished product 550, the magnetic conductive plate 53, and the second semi-finished product 510 are sequentially inserted and fixed through the second avoiding hole 1601 by using the first fastening member, so as to form the magnetic circuit system 5. In this case, the first fastener is, for example, a pin, which can independently penetrate and fix the first semi-finished product 550, the magnetic conductive plate 53, and the second semi-finished product 510 to form the magnetic circuit system 5. Or, the first through hole 511 of the magnetic conductive cover 51 is a threaded hole, and the first fastening member is a screw, so that the first fastening member is screwed and fixed with the magnetic conductive cover 51 to form the magnetic circuit system 5.

The fourth stage 160 is further provided with a second magnetic attraction member 1603, and the second magnetic attraction member 1603 magnetically attracts the first semi-finished product 550 and the magnetic conductive plate 53 located in the fourth positioning groove 1602, so as to prevent the magnetic conductive plate 53 and the first semi-finished product 550 from falling off when the fourth stage 160 is buckled with respect to the fifth stage 162.

The fifth stage 162 is provided with an avoidance notch 1627, and the avoidance notch 1627 is used for avoiding the clamping mechanism for clamping the fourth stage 160, so that the fourth stage 160 and the fifth stage 162 are relatively locked.

The bottom of fourth constant head tank 1602 still is equipped with the third and dodges hole 1604, and third dodges hole 1604 and communicates fourth constant head tank 1602, after forming magnetic circuit 5, accessible third dodges hole 1604 and pushes up plastic part 55 to separation fourth microscope carrier 160 and magnetic circuit 5, and ensure that the magnetic circuit 5 after the equipment is accomplished all is located fifth microscope carrier 162.

In this embodiment, the second magnetic attraction member 1603 is disposed on a side of the fourth carrying stage 160 departing from the fourth positioning groove 1602, the third avoiding hole 1604 penetrates through the second magnetic attraction member 1603, and the third avoiding hole 1604 is used for inserting the ejector rod and pushing against the first semi-finished product 550 when the fourth carrying stage 160 and the fifth carrying stage 162 are separated. Optionally, the second magnetic member 1603 may be disposed offset from the third avoiding hole 1604.

The fifth stage 162 is further provided with guide posts 1626, and the fourth stage 160 is provided with guide holes 1608, the guide holes 1608 being for aligned guiding engagement with the guide posts 1626. The fourth stage 160 and the fifth stage 162 are aligned and fastened with the guide post 1626 through the guide hole 1608, so that the problem that the fourth stage 160 and the fifth stage 162 are difficult to align and attach, and even easy to be dislocated due to the fact that the polarities of the adjacent end surfaces of the bottom magnetic plate 52 and the top magnetic plate 54 are the same and the magnetism of the first semi-finished product 550 and the magnetism of the second semi-finished product 510 repel each other can be solved. Therefore, after the fourth stage 160 and the fifth stage 162 are aligned and fastened, the guide holes 1608 are inserted into the guide posts 1626, which facilitates the alignment and fastening and prevents the displacement.

The fourth stage 160 is further provided with an annular positioning rib 1607, the annular positioning rib 1607 is disposed around the fourth positioning groove 1602, and the annular positioning rib 1607 is inserted into the accommodating cavity 516 along with the alignment and buckling of the fourth stage 160 and the fifth stage 162, so as to position the bottom magnetic plate 52 in the accommodating cavity 516, and the first semi-finished product 550 and the magnetic conductive plate 53 are stacked on the bottom magnetic plate 52.

Fourth microscope carrier 160 still is equipped with counterpoint groove 1606, and counterpoint groove 1606 encircles this annular location muscle 1607 and sets up, and fifth microscope carrier 162 is equipped with counterpoint arch 1624, and counterpoint arch 1624 encircles the setting of fifth constant head tank 1622, and counterpoint groove 1606 and the protruding 1624 counterpoint lock of counterpoint.

In this embodiment, the alignment groove 1606 is disposed on the fourth stage 160 to form the annular positioning rib 1607 between the alignment groove 1606 and the fourth positioning groove 1602, and when the alignment protrusion 1624 is engaged with the alignment groove 1606 in an alignment manner, the annular positioning rib 1607 is inserted into the accommodating cavity 516 through the area surrounded by the alignment protrusion 1624.

Wherein the guiding posts 1626 and the guiding holes 1608 are guided and matched with relatively low precision, and the alignment grooves 1606 and the alignment protrusions 1624 are positioned and assembled with relatively high precision, so that the annular positioning ribs 1607 can be positioned more precisely in the accommodating cavity 516 and the bottom magnetic plate 52.

In other embodiments, the alignment groove 1606 and the alignment protrusion 1624 may be eliminated, the guide post 1626 and the guide hole 1608 may be eliminated, and the height and thickness of the annular positioning rib 1607 may be set appropriately, which may also serve as the above-mentioned features.

Further referring to fig. 10, the third assembly jig 16 further includes a positioning stage 164, the positioning stage 164 is provided with a first positioning cavity 1642 and a second positioning cavity 1644, the first positioning cavity 1642 is used for carrying and positioning the fourth stage 160, and the second positioning cavity 1644 is used for carrying and positioning the fifth stage 162, so that the paired fourth stage 160 and fifth stage 162 are synchronously conveyed by the positioning stage 164, and the magnetic circuit system 5 is assembled by using the paired fourth stage 160 and fifth stage 162.

The positioning stage 164 is further provided with an avoiding notch 1643 communicated with the first positioning cavity 1642 and an avoiding notch 1645 communicated with the second positioning cavity 1644, and the avoiding notch 1643 and the avoiding notch 1645 are used for avoiding and clamping the clamping mechanism of the fourth stage 160.

Referring to fig. 11, in the embodiment, the plastic part assembling apparatus 2 generally includes a second assembling jig conveying line 21, a plastic part assembling station 22, a glue dispensing station 23, a top magnetic plate assembling station 24, a pressing station 25, a glue blowing station 26, a blanking station 27, an empty-load detecting station 28 and a purging station 29, and the second assembling jig conveying line 21 circularly conveys the second assembling jig 12 to sequentially pass through the plastic part assembling station 22, the glue dispensing station 23, the top magnetic plate assembling station 24, the pressing station 25, the glue blowing station 26, the blanking station 27, the empty-load detecting station 28 and the purging station 29.

Wherein, the plastic part assembling station 22 is configured to load the plastic part 55 into the third positioning groove 1211, the glue dispensing station 23 is configured to apply a glue solution on the loaded plastic part 55, the top magnetic plate assembling station 24 is configured to load the top magnetic plate 54 into the second positioning groove 1210, so that the top magnetic plate 54 and the plastic part 55 applied with the glue solution are stacked, and the first magnetic attraction member 122 attracts the top magnetic plate 54 to prevent the top magnetic plate 54 and the plastic part 55 from jumping, so as to initially form the first semi-finished product 550; the pressing station 25 is used for pressing the top magnetic plate 54 after the first semi-finished product 550 is preliminarily formed so as to enable the top magnetic plate 54 to be tightly adhered to the plastic part 55; the glue blowing station 26 is used for blowing the pressed first semi-finished product 550 so as to enable the volatilized glue solution to be away from the second assembly jig 12 along with the air flow, and prevent the gaseous glue solution from condensing and falling on the first semi-finished product 550 or the second assembly jig 12; the glue solution in the first semi-finished product 550 is condensed along with the transmission of the second assembly jig conveying line 21, so that the first semi-finished product 550 is fixed into a whole, and the blanking station 27 is used for transferring the fixed first semi-finished product 550 to the finished product assembly equipment 4; the no-load detection station 28 is configured to detect whether the first semi-finished product 550 still exists in the second assembly jig 12 after the blanking, and send a prompt signal if the first semi-finished product 550 exists; the purging station 29 is used for purging the empty second assembly jig 12 before the plastic part 55 is assembled, so as to clean the second assembly jig 12, thereby being beneficial to improving the quality of the assembled first semi-finished product 550.

In other embodiments, the plastic part assembling apparatus 2 may not include the pressing station 25, the glue blowing station 26, the empty detecting station 28, and the purging station 29. Or, the plastic part assembling apparatus 2 only includes an assembling station and a dispensing station, wherein the assembling station is used for sequentially loading the plastic part 55 and the top magnetic plate 54 to the second assembling jig 12, and the dispensing station is used for applying the glue solution on the plastic part 55.

In this embodiment, the plastic part assembling station 22 includes a plastic part feeding device 220 and a plastic part taking device 221, the plastic part feeding device 220 is used for providing the plastic parts 55 in sequence, and the plastic part taking device 221 is used for picking up the plastic parts 55 provided by the plastic part feeding device 220 and loading the plastic parts 55 into the third positioning groove 1211. The plastic part taking device 221 may be a suction cup or a clamping jaw mechanism, which can pick up the plastic part 55.

The top magnetic plate assembling station 24 includes a magnet feeding device 240 and a magnetic material taking device 241, the magnet feeding device 240 is configured to provide the top magnetic plate 54, the magnetic material taking device 241 is configured to pick up the top magnetic plate 54 provided by the magnet feeding device 240, and load the top magnetic plate 54 into the second positioning groove 1210, so that the top magnetic plate 54 and the plastic part 55 applied with the glue solution are stacked.

The pressing station 25 includes a driving mechanism and a pressing member, the driving mechanism is connected to the pressing member and drives the pressing member to move up and down, so that after the top magnetic plate 54 and the plastic member 55 are laminated and bonded to form the first semi-finished product 550, the top magnetic plate 54 is pressed for a period of time, so that the bonding between the top magnetic plate 54 and the plastic member 55 is tight and uniform.

The glue blowing station 26 may be a fan, a blower, or the like, which continuously provides wind to take away volatilized glue and accelerate solidification of the glue, so that the first semi-finished product 550 is fixed into a whole.

The empty detection station 28 may be a photoelectric sensor or a camera for detecting and identifying whether the first semi-finished product 550 is still present in the second assembly jig 12. The purging station 29 can be a pipeline communicated with negative pressure and used for adsorbing the scraps in the second assembly jig 12; or the purging station 29 may be a felt or the like for cleaning and removing debris from the second assembly jig 12.

Referring to fig. 12, in the present embodiment, the magnetic conductive cover assembling apparatus 3 generally includes a first stage conveyor line 30, a magnetic conductive cover assembling station 31, a dispensing station 32, a second stage loading mechanism 33, a bottom magnetic plate assembling station 34, a glue cleaning station 35, a heating station 36, a second stage unloading mechanism 37, a blanking station 38, and a purging station 39. The first stage conveyor line 30 circularly conveys the first stage 140 to sequentially pass through the magnetic conductive cover assembling station 31, the dispensing station 32, the second stage loading mechanism 33, the bottom magnetic plate assembling station 34, the glue cleaning station 35, the heating station 36, the second stage unloading mechanism 37, the blanking station 38 and the purging station 39.

The magnetic conductive cover assembling station 31 is configured to load the magnetic conductive cover 51 to the first positioning groove 1402; the glue dispensing station 32 is used for applying glue liquid in an assembly area assembled with the bottom magnetic plate 52 on the bottom wall 512; the second stage loading mechanism 33 is used for carrying the second stage 142 to be aligned with the first stage 140, and inserting the second stage 142 into the accommodating cavity 516, so as to position an assembling area assembled with the bottom magnetic plate 52 on the bottom wall 512; the bottom magnetic plate assembling station 34 is used for loading the bottom magnetic plate 52 to the assembling area through the guide channel 1422, so that the bottom magnetic plate 52 is assembled and fixed with the assembling area of the bottom wall 512 and is spaced from the annular peripheral wall 514; the glue cleaning station 35 cleans the first through hole 511 and the second through hole 520 after the magnetic conductive cover 51 and the bottom magnetic plate 52 are stacked, so as to prevent the glue solution from solidifying and blocking the first through hole 511 and the second through hole 520, so as to fix the magnetic circuit system 5 subsequently; the heating station 36 is used for heating and insulating the bonded magnetic conduction cover 51 and the bottom magnetic plate 52 to accelerate the solidification of glue solution, so that the second semi-finished product 510 is fixed into a whole; the second stage unloading mechanism 37 is used for taking away the second stage 142 which is aligned with the first stage 140 after the bottom magnetic plate 52 and the magnetic conductive cover 51 are fixed into a whole after being heated, so as to unload the second semi-finished product 510 later; the blanking station 38 is used to transfer the second semi-finished product 510 to the finished product assembly apparatus 4; the purging station 39 is used for purging the first carrying table 140 before the magnetic conductive cover 51 is assembled, so as to clean the first carrying table 140, and further to improve the quality of the assembled second semi-finished product 510.

An idle detection station is further arranged between the blanking station 38 and the purging station 39, and the idle detection station is used for detecting whether the second semi-finished product 510 still exists in the blanked first carrying platform 140, and sending a reminding signal if the second semi-finished product 510 exists.

Further, the magnetic conductive cover assembling apparatus 3 further includes a second stage conveyor line 310, and the second stage conveyor line 310 is configured to convey the second stage 142 unloaded by the second stage unloading mechanism 37 to a position where the second stage loading mechanism 33 can pick up the second stage, so that the second stage 142 can be recycled.

The second stage conveying line 310 may be a belt conveying mechanism, and thus the second stage 142 is circularly conveyed by a belt. The second stage transport line 310 may be a roller mechanism that cyclically transports the second stage 142 through a plurality of rollers side by side.

In this embodiment, the magnetic conductive cover assembling station 31 includes a magnetic conductive cover feeding device 312 and a magnetic suction taking device 311, the magnetic conductive cover feeding device 312 is used for providing the magnetic conductive covers 51 in sequence, and the magnetic suction taking device 311 is used for picking up the magnetic conductive covers 51 provided by the magnetic conductive cover feeding device 312 and loading the magnetic conductive covers 51 to the first positioning slot 1402.

The second stage loading mechanism 33 and the second stage unloading mechanism 37 each include a driving mechanism 330 and a pickup mechanism 331, the driving mechanism 330 is connected to the pickup mechanism 331 and drives the pickup mechanism 331 to move back and forth between the first stage transfer line 30 and the second stage transfer line 310, and the pickup mechanism 331 is used to pick up and place the second stage 142.

Pick-up mechanism 331 may be a finger grip cylinder or suction cup; the driving mechanism 330 includes a motor and an air cylinder, the motor drives the picking mechanism 331 to move back and forth between the first stage conveying line 30 and the second stage conveying line 310, and the air cylinder drives the picking mechanism 331 to move up and down so as to avoid interference with other components; the driving mechanism 330 may also include a plurality of cylinders or a plurality of motors to achieve the above-mentioned functions.

The bottom magnetic plate assembling station 34 includes a magnet feeding device 340 and a magnetic material taking device 341, the magnet feeding device 340 is configured to sequentially provide the bottom magnetic plates 52, and the magnetic material taking device 341 is configured to pick up the bottom magnetic plates 52 provided by the magnet feeding device 340 and load the bottom magnetic plates 52 to the assembling area on the bottom wall 512 through the guide passage 1422.

The glue cleaning station 35 comprises an ejector pin, a driving mechanism and a wiping mechanism, after the ejector pin is aligned with the second through hole 520, the driving mechanism drives the ejector pin to sequentially penetrate through the second through hole 520, the first through hole 511 and the first avoiding hole 1406 so as to clean glue in the second through hole 520 and the first through hole 511, and the wiping mechanism wipes the ejector pin part penetrating through the first avoiding hole 1406 so as to remove the glue on the ejector pin.

The heating station 36 comprises a heat source which provides heat to perform heat preservation treatment on the preliminarily formed second semi-finished product 510 so as to accelerate the solidification of the glue solution.

After passing through the heating station 36, the second semi-finished product 510 is fixed into a whole, then the second stage unloading mechanism 37 takes away the second stage 142 and places the second stage 142 on the second stage conveyor line 310, so that the second semi-finished product 510 is exposed, the blanking station 38 transfers the second semi-finished product 510 to the finished product assembling equipment 4, then the empty detection station detects whether the first semi-finished product 550 still exists in the first stage 140, and the purging station 39 purges the empty first stage 140.

Referring to fig. 13 to 16, in the present embodiment, the finished product assembling apparatus 4 generally includes a third assembling jig conveying line 410, a first semi-finished product assembling station 412, a second semi-finished product assembling station 414, a dispensing station 416, a magnetic conductive plate assembling station 418, a flipping device 420, a guiding and pressing member 422, an assembling mechanism 424, a pushing rod mechanism 426, a detecting device 428, a sorting station 430, and a second fastener assembling station 432, and the third assembling jig conveying line 410 circularly conveys the third assembling jig 16 to pass through the second semi-finished product assembling station 414, the first semi-finished product assembling station 412, the dispensing station 416, the magnetic conductive plate assembling station 418, the flipping device 420, the guiding and pressing member 422, the assembling mechanism 424, the pushing rod mechanism 426, the detecting device 428, the sorting station 430, and the second fastener assembling station 432 in sequence.

Wherein, the first semi-finished product assembling station 412 is used for loading the first semi-finished product 550 to the fourth positioning groove 1602, the second semi-finished product assembling station 414 is used for loading the second semi-finished product 510 to the fifth positioning groove 1622, and the glue dispensing station 416 is used for applying glue solution on the bottom magnetic plate 52 and the top magnetic plate 54; the magnetic conductive plate assembly station 418 is configured to load the magnetic conductive plate 53 into the fourth positioning slot 1602 to be stacked with the top magnetic plate 54; the turnover device 420 is configured to turn over the fourth stage 160 carrying the first semi-finished product 550 and the magnetic conductive plate 53, and is aligned and fastened with the fifth stage 162 carrying the second semi-finished product 510, so that the first semi-finished product 550, the magnetic conductive plate 53, and the second semi-finished product 510 are stacked one on another.

The guide pressing piece 422 is used for pressing the buckled fourth stage 160 and fifth stage 162, and the guide pressing piece 422 is provided with an assembly opening 4220 aligned with the second avoidance hole 1601; the assembling mechanism 424 is used for inserting a first fastener through the assembling opening 4220 and the second avoiding hole 1601, and the first fastener penetrates through the first semi-finished product 550, the magnetic conducting plate 53 and the second semi-finished product 510, so that the magnetic circuit system 5 is fixed into a whole; the ejector rod mechanism 426 is used for penetrating into the third avoidance hole 1604 to push against the magnetic circuit system 5, and is pulled out from the third avoidance hole 1604 after the fourth carrying platform 160 is separated from the magnetic circuit system 5; the turning device 420 is further configured to lift the fourth stage 160 in a state where the ejector mechanism 426 is inserted into the third avoidance hole 1604, turn over the fourth stage 160 after the ejector mechanism 426 is pulled out from the third avoidance hole 1604, and place the fourth stage 160 on the third assembly jig conveyor line 410, so that the fourth stage 160 and the corresponding fifth stage 162 are arranged side by side.

The detecting device 428 is used for detecting the quality of the magnetic circuit system 5 located in the fifth positioning groove 1622, and the sorting station 430 is used for loading the magnetic circuit system 5 with qualified quality into a tray and sorting the magnetic circuit system 5 with unqualified quality into a recovery box; second fastener assembly station 432 is used to load a second fastener into locating hole 1621 on empty fifth stage 162.

The magnetic conductive plate assembling station 418 includes a magnetic conductive plate feeding device 4181 and a magnetic material taking device 4182, the magnetic conductive plate feeding device 4181 is configured to provide the magnetic conductive plates 53 in sequence, and the magnetic material taking device 4182 is configured to pick up the magnetic conductive plates 53 provided by the magnetic conductive plate feeding device 4181, and load the magnetic conductive plates 53 into the fourth positioning slot 1602 to be stacked with the top magnetic plate 54.

In this embodiment, the number of the turning devices 420 is two, one of the turning devices 420 is located at the upstream of the guide pressing member 422, the other turning device 420 is located at the downstream of the guide pressing member 422, the upstream turning device 420 is configured to turn the fourth stage 160 to be aligned and fastened with the fifth stage 162, and the downstream turning device 420 is configured to separate the fastened fourth stage 160 and fifth stage 162.

In other embodiments, the number of the turning devices 420 may also be one, and the turning devices 420 may reciprocate upstream and downstream of the guide holder 422 to simultaneously align and couple the fourth stage 160 and the fifth stage 162.

Referring to fig. 14, flipping unit 420 includes a telescoping mechanism 4201, a lifting mechanism 4203, a rotating mechanism 4205, and a clamping mechanism 4207, where clamping mechanism 4207 is used for clamping fourth stage 160, and where clamping mechanism 4207 includes two clamping ends respectively clamping a side away from fourth positioning slot 1602 and a side opposite to the side; the telescopic mechanism 4201 is configured to drive the clamping mechanism 4207 to move toward the notch on the third assembly fixture conveyor line 410, so that the two expanded clamping ends are respectively located at two sides of the fourth stage 160 aligned with the notch; the lifting mechanism 4203 is configured to drive the clamping mechanism 4207 for clamping the fourth stage 160 to perform a lifting motion, so that the fourth stage 160 and the fifth stage 162 are aligned and engaged or disengaged; after the lifting mechanism 4203 suspends the holding mechanism 4207 holding the fourth stage 160, the rotating mechanism 4205 is configured to drive the holding mechanism 4207 to perform a turning motion, so that the fourth stage 160 is disposed directly above the fifth stage 162, and the fourth positioning groove 1602 and the fifth positioning groove 1622 are disposed at a distance and opposite to each other, or the fourth stage 160 and the fifth stage 162 are misaligned with each other directly above the fifth stage 162.

When the engaged fourth stage 160 and fifth stage 162 are separated, the telescopic mechanism 4201 is configured to drive the clamping mechanism 4207 to move toward the notch on the third assembly fixture conveyor 410, so that one clamping end of the clamping mechanism 4207 is located on one side of the fourth stage 160 opposite to the fifth stage 162 through the avoiding notch 1627, and the other clamping end is located on the other side of the fourth stage 160 opposite to the fifth stage 162, thereby clamping the fourth stage 160 from both sides of the fourth stage 160.

After the turning device 420 aligns and fastens the fourth stage 160 and the fifth stage 162, the fastened fourth stage 160 and fifth stage 162 pass through the guiding and pressing member 422, and the guiding and pressing member 422 is used for pressing the repellent first semi-finished product 550 and the second semi-finished product 510.

Referring to fig. 15, the guiding pressing member 422 is provided with a guiding inclined plane 4221 and a pressing plane 4223, the third assembly jig conveying line 410 conveys the fastened fourth stage 160 and fifth stage 162 to pass through the guiding inclined plane 4221 and the pressing plane 4223 in sequence, the fastened fourth stage 160 and fifth stage 162 are gradually fastened and tightly attached to each other under the action of the guiding inclined plane 4221, and the pressing plane 4223 is used for keeping the fourth stage 160 and fifth stage 162 in a tightly attached state.

The assembling port 4220 is located on the pressing plane 4223, and after the assembling port 4220 and the second avoiding hole 1601 are aligned, the assembling mechanism 424 penetrates through the first semi-finished product 550, the magnetic conducting plate 53 and the second semi-finished product 510 via the assembling port 4220 and the second avoiding hole 1601 to form a fastener, so that the magnetic circuit system 5 is fixed into a whole.

The assembly mechanism 424 includes a fastener feeder 4241 and an electric driver 4243, and the electric driver 4243 loads the first fastener from the fastener feeder 4241 and inserts the first fastener into the assembly opening 4220 and the second relief hole 1601 to assemble the magnetic circuit system 5.

The electric screwdriver 4243 comprises a driving mechanism and an electric screwdriver, wherein the driving mechanism drives the electric screwdriver to load the first fastener from the fastener feeder 4241 and align the electric screwdriver with the assembling opening 4220 to penetrate the first fastener into the magnetic circuit system 5.

In this embodiment, the first fastening member is a screw, and the screw is fixedly connected to the second fastening member (nut) located in the positioning hole 1621 so as to form the magnetic circuit system 5 into a whole.

Thus, the second fastener assembly station 432 loads the second fastener into the locating hole 1621 before the second blank assembly station 414 loads the second blank 510 into the fifth locating slot 1622.

The second fastener assembly station 432 includes a second fastener feeder 4321 and a second fastener extractor 4323, the second fastener feeder 4321 for sequentially providing second fasteners, the second fastener extractor 4323 for loading the sequentially provided second fasteners into the pilot holes 1621.

After the magnetic circuit system 5 is formed, the fourth stage 160 and the fifth stage 162 that are engaged with each other need to be separated so as to take out the magnetic circuit system 5. However, during the process of removing the fourth stage 160, the magnetic circuit system 5 may move synchronously with the fourth stage 160, thereby causing difficulty in subsequent blanking.

Referring to fig. 16, the ejector mechanism 426 includes an ejector rod 4261 and an ejector rod driving mechanism 4263, the ejector rod driving mechanism 4263 drives the ejector rod 4261 to penetrate through the third avoidance hole 1604 to abut against the magnetic circuit system 5, and drives the ejector rod 4261 to be pulled out of the third avoidance hole 1604 after the fourth carrier stage 160 is separated from the magnetic circuit system 5. The turning device 420 is further configured to, in a state where the lift rod 4261 is inserted into the third avoidance hole 1604, lift the fourth stage 160 along the lift rod 4261, turn over the fourth stage 160 after the lift rod 4261 is pulled out from the third avoidance hole 1604, and place the fourth stage 160 on the stage conveyor line 410, so that the fourth stage 160 and the corresponding fifth stage 162 are arranged side by side.

This application is through setting up ejector pin mechanism 426 and propping magnetic circuit 5 when separating fourth microscope carrier 160 and fifth microscope carrier 162 of looks lock to ensure that fashioned magnetic circuit 5 all is located fifth microscope carrier 162, be convenient for follow-up detect and sort magnetic circuit 5.

The detecting device 428 includes an image capturing device, and the image capturing device is configured to acquire an image of the magnetic circuit system 5, and further identify whether the magnetic circuit system 5 has a defect such as a crack or a dislocation according to the acquired image, where if the defect is not detected, the quality of the magnetic circuit system 5 is acceptable, and if the defect is detected, the quality of the magnetic circuit system 5 is not acceptable. For example, when the first semi-finished product 550, the magnetic conductive plate 53, and the second semi-finished product 510 are fixed by screws, cracks are generated on the top magnetic plate 54 due to excessive force, and the magnetic circuit system 5 is rejected, so that the defective magnetic circuit system 5 can be identified by the detection device 428.

The detection device 428 feeds the detection result back to the sorting station 430, and the sorting station 430 is used for sorting the magnetic circuit systems 5 detected by the detection device 428, loading the magnetic circuit systems 5 with qualified quality into trays, and sorting the magnetic circuit systems 5 with unqualified quality to the recovery boxes.

Being different from the situation of the prior art, the application discloses an equipment tool of magnetic circuit. Through setting up first microscope carrier and second microscope carrier, wherein first microscope carrier is equipped with the first positioning groove that is used for fixing a position the annular perisporium of magnetic conduction cover, and the second microscope carrier is equipped with the direction passageway, and second microscope carrier and first microscope carrier counterpoint assembly, and then the second microscope carrier inserts the holding intracavity of magnetic conduction cover, fix a position out the assembly region with end magnetic sheet looks assembly on the diapire, make end magnetic sheet can be fixed with this assembly region assembly via the direction passageway, thereby ensure that end magnetic sheet and magnetic conduction cover assembly position are accurate.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (10)

1. The utility model provides an equipment tool of magnetic circuit, its characterized in that, equipment tool includes first equipment tool, first equipment tool includes:

the first carrying platform is provided with a first positioning groove for positioning the annular peripheral wall of the magnetic conduction cover, and the magnetic conduction cover comprises a bottom wall and the annular peripheral wall connected with the bottom wall to form an accommodating cavity;

and the second microscope carrier is provided with a guide channel, is assembled with the first microscope carrier in an alignment way, is inserted into the accommodating cavity of the magnetic conduction cover so as to position an assembly area assembled with the bottom magnetic plate on the bottom wall, and the bottom magnetic plate is placed into the accommodating cavity through the guide channel so as to be assembled and fixed with the assembly area of the bottom wall and be spaced from the annular peripheral wall.

2. The assembly jig according to claim 1, wherein the second carrier includes a first sleeve and a second sleeve disposed on one side of the first sleeve, the guide channel penetrates through the first sleeve and the second sleeve, the second sleeve is inserted into the accommodating cavity, and the first sleeve is stacked on the first carrier and assembled with the first carrier in an alignment manner.

3. The assembly jig of claim 2, wherein a height of the second sleeve along an extending direction of the guide channel is smaller than a depth of the accommodating cavity in the extending direction.

4. The assembly jig of claim 2, wherein the first carrying stage is further provided with alignment posts, the first sleeve is provided with alignment holes, and the first carrying stage and the second carrying stage are assembled by aligning the alignment posts and the alignment holes.

5. The assembly jig according to claim 1, wherein a side wall of the first stage is provided with a positioning portion for defining a position of the first stage.

6. The assembly jig according to claim 1, wherein a first avoiding hole is formed in the bottom of the first positioning groove, a first through hole is formed in the magnetic conduction cover, a second through hole is formed in the bottom magnetic plate, the first avoiding hole is aligned with the first through hole and the second through hole, and the first avoiding hole is used for allowing a rod piece to be inserted into the first through hole and the second through hole so as to clean glue in the first through hole and the second through hole.

7. The assembly jig of claim 2, further comprising a second assembly jig, the second assembly jig comprising:

the third positioning groove is arranged at the bottom of the second positioning groove, and the accommodating groove is arranged at the bottom of the third positioning groove;

the first magnetic suction piece is arranged in the accommodating groove;

the second positioning groove is used for positioning the top magnetic plate, the third positioning groove is used for positioning the plastic part, and the first magnetic part is used for magnetically adsorbing the top magnetic plate.

8. The assembly jig of claim 7, further comprising a third assembly jig, the third assembly jig comprising:

the fourth carrier is provided with a fourth positioning groove for positioning the magnetic conduction plate and the first semi-finished product at the same time, the first semi-finished product comprises the top magnetic plate and the plastic part which are arranged in a stacked mode and fixed with each other, and a second avoidance hole is formed in the bottom of the fourth positioning groove;

the fifth carrying platform is provided with a fifth positioning groove for positioning a second semi-finished product, and the second semi-finished product comprises the magnetic conduction cover and the bottom magnetic plate which is accommodated in the accommodating cavity and fixed with the bottom wall;

the fourth carrying platform is also used for being in counterpoint buckling with the fifth carrying platform, so that the first semi-finished product, the magnetic conducting plate and the second semi-finished product are mutually stacked, the first semi-finished product and the magnetic conducting plate are accommodated in the accommodating cavity, the adjacent end surfaces of the bottom magnetic plate and the top magnetic plate have the same polarity, and a fastener is allowed to sequentially penetrate through and fix the first semi-finished product, the magnetic conducting plate and the second semi-finished product through the second avoiding hole to form the magnetic circuit system.

9. The assembly jig according to claim 8, wherein the fourth stage further includes an alignment groove, the alignment groove is disposed around the fourth positioning groove, an annular positioning rib is formed between the alignment groove and the fourth positioning groove, the fifth stage includes an alignment protrusion, the alignment protrusion is disposed around the fifth positioning groove, the alignment groove and the alignment protrusion are assembled in alignment, and the annular positioning rib is inserted into the accommodating cavity of the magnetic conductive cover along with the alignment assembly of the fourth stage and the fifth stage, so that the first semi-finished product and the magnetic conductive plate are stacked on the bottom magnetic plate.

10. The assembly jig of claim 8, wherein a third avoiding hole is formed in a side of the fourth stage facing away from the fourth positioning groove, a second magnetic attraction member is formed in a side of the fourth stage facing away from the fourth positioning groove, the third avoiding hole further penetrates through the second magnetic attraction member, and the third avoiding hole is used for allowing a push rod to be inserted and abut against the first semi-finished product when the fourth stage and the fifth stage are separated.

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