阅读说明：本技术 一种一体成型电感热压模具 (Integrated into one piece inductance hot pressing mould ) 是由 徐可心 马飞 林涛 王进良 孙洪波 吴长和 王劲 于 2021-07-15 设计创作，主要内容包括：本发明提供一种一体成型电感热压模具,包括：模架,所述模架包括一上模固定板,所述上模固定板的下方相对设有一下模固定板,所述上模固定板和所述下模固定板之间通过一活动支撑件连接；上模模块,可拆卸连接于所述上模固定板的底部；下模模块,可拆卸连接于所述下模固定板的顶部；中模模块,可拆卸连接于所述下模模块的朝向所述上模模块的一侧,且所述上模模块、所述中模模块和所述下模模块沿所述活动支撑件的长度方向依次对齐。有益效果是通过将上模模块、中模模块和下模模块的结构进行整合且配置为可拆卸连接,便于装配和拆解,有效节约模具更换时间,进而有效提升生产效率。(The invention provides an integrally formed inductor hot-pressing die, which comprises: the die carrier comprises an upper die fixing plate, a lower die fixing plate is oppositely arranged below the upper die fixing plate, and the upper die fixing plate is connected with the lower die fixing plate through a movable support piece; the upper die module is detachably connected to the bottom of the upper die fixing plate; the lower die module is detachably connected to the top of the lower die fixing plate; the middle die module is detachably connected with the lower die module towards one side of the upper die module, and the upper die module, the middle die module and the lower die module are sequentially aligned along the length direction of the movable support piece. The beneficial effects are that the structure through going up mould module, well mould module and lower mould module integrates and configure to can dismantle the connection, and the assembly and the disassembly of being convenient for effectively practice thrift the mould change time, and then effectively promote production efficiency.)

1. The utility model provides an integrated into one piece inductance hot pressing mould which characterized in that includes:

the die carrier comprises an upper die fixing plate, a lower die fixing plate is oppositely arranged below the upper die fixing plate, and the upper die fixing plate is connected with the lower die fixing plate through a movable support piece;

the upper die module is detachably connected to the bottom of the upper die fixing plate;

the lower die module is detachably connected to the top of the lower die fixing plate;

the middle die module is detachably connected with the lower die module towards one side of the upper die module, and the upper die module, the middle die module and the lower die module are sequentially aligned along the length direction of the movable support piece.

2. The integrally formed inductor hot pressing mold of claim 1, wherein the upper mold module comprises:

the top of the upper template is detachably connected to the bottom of the upper mold fixing plate;

the female part is arranged at the bottom of the upper template, and a plurality of first mold cavities are arranged in the female part in a penetrating manner along the length direction of the movable support piece;

the upper punch penetrates through the first die cavity and is in sliding fit with the first die cavity, the bottom end of the upper punch extends out of the female part, and the top end of the upper punch is abutted to the upper die plate;

and the upper die floating plate is elastically connected below the female die piece, and a plurality of second die cavities corresponding to the first die cavities are arranged on the upper die floating plate in a penetrating manner.

3. The integrally formed inductor hot-pressing mold according to claim 2, wherein at least one upper mold boss is disposed at the top of the upper mold plate, at least one upper mold guide groove corresponding to the upper mold boss is disposed at the bottom of the upper mold fixing plate, one end of the upper mold guide groove is open, and the upper mold boss and the upper mold guide groove are slidably connected to enable the top of the upper mold plate to be detachably connected to the bottom of the upper mold fixing plate.

4. The integrally formed inductor hot pressing mold according to claim 2, further comprising a first limiting structure, comprising:

the first positioning column is arranged at the edge of the upper die fixing plate and is positioned on one side of the opening end far away from the upper die guide groove;

the first positioning hole is formed in the edge of the upper template corresponding to the first positioning column;

the first fixing piece is arranged on the side face of the upper die fixing plate and covers the opening end of the upper die guide groove.

5. The integrally formed inductor hot-pressing mold according to claim 4, wherein the first limiting structure further comprises at least two upper mold guide rails oppositely arranged, the upper mold guide rails are arranged on the upper mold fixing plate and parallel to the upper mold guide grooves, and two sides of the upper mold plate are slidably connected with the upper mold guide rails.

6. The integrally formed inductor hot pressing mold of claim 1, wherein the lower mold module comprises:

the bottom of the lower die plate is provided with at least one lower die boss, the top of the lower die fixing plate is provided with at least one lower die guide groove corresponding to the lower die boss, one end of the lower die guide groove is opened, and the lower die boss is in sliding connection with the lower die guide groove to realize that the bottom of the lower die plate is detachably connected with the top of the lower die fixing plate;

and the fixing plate is arranged at the top of the lower template and is detachably connected with the middle die module.

7. The integrally formed inductor hot pressing mold of claim 6, further comprising a second limiting structure, comprising:

the second positioning column is arranged at the edge of the lower die fixing plate and is positioned at one side of the opening end far away from the lower die guide groove;

the second positioning hole is formed in the edge of the lower template corresponding to the second positioning column;

and the second fixing piece is arranged on the side surface of the lower die fixing plate and covers the opening end of the lower die guide groove.

8. The integrally formed inductor hot pressing mold according to claim 7, wherein the second limiting structure further comprises at least two lower mold guide rails arranged oppositely, the lower mold guide rails are arranged on the lower mold fixing plate and parallel to the lower mold guide grooves, and two sides of the lower mold plate are slidably connected with the lower mold guide rails.

9. The integrally formed inductor hot pressing mold of claim 6, wherein the middle mold module comprises:

the bottom of the base is detachably connected with the top of the fixed plate, and a handle is arranged on the side face of the base;

and the middle template is arranged on the top of the base and is detachably connected with the base.

10. The integrally formed inductor hot-pressing mold as claimed in claim 1, wherein the bottom of the upper mold block has at least one middle guide post, and the middle mold block and the lower mold block have guide post holes corresponding to the middle guide post, respectively.

Technical Field

The invention relates to the technical field of dies, in particular to an integrally formed inductor hot-pressing die.

Background

With the development of the inductor industry and the continuous improvement of the manufacturing technology and the research and development technology, the inductor products are also continuously upgraded and updated, and the types of inductors are also endlessly varied. The integrated inductor is of a fully-closed structure formed by die-casting, is good in magnetic shielding effect, can effectively reduce electromagnetic interference, is wider in application range, and is accepted by the market.

The integrated into one piece inductance need carry out hot briquetting when preparing, and hot briquetting mould is one kind and is become the production mould of inductance component with metal powder hot briquetting, and current integrated into one piece inductance hot pressing mould adopts spare part stromatolite equipment, and part class quantity is various, assembles, disassembles and changes time-consuming and energy-consuming, influences assembly precision and production efficiency.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an integrally formed inductor hot-pressing die, which comprises:

the die carrier comprises an upper die fixing plate, a lower die fixing plate is oppositely arranged below the upper die fixing plate, and the upper die fixing plate is connected with the lower die fixing plate through a movable support piece;

the upper die module is detachably connected to the bottom of the upper die fixing plate;

the lower die module is detachably connected to the top of the lower die fixing plate;

the middle die module is detachably connected with the lower die module towards one side of the upper die module, and the upper die module, the middle die module and the lower die module are sequentially aligned along the length direction of the movable support piece.

Preferably, the upper die module includes:

the top of the upper template is detachably connected to the bottom of the upper mold fixing plate;

the female part is arranged at the bottom of the upper template, and a plurality of first mold cavities are arranged in the female part in a penetrating manner along the length direction of the movable support piece;

the upper punch penetrates through the first die cavity and is in sliding fit with the first die cavity, the bottom end of the upper punch extends out of the female part, and the top end of the upper punch is abutted to the upper die plate;

and the upper die floating plate is elastically connected below the female die piece, and a plurality of second die cavities corresponding to the first die cavities are arranged on the upper die floating plate in a penetrating manner.

Preferably, the top of cope match-plate pattern is equipped with one at least and goes up the mould boss, the bottom of cope match-plate pattern be equipped with corresponding to go up the mould guide slot on one at least of mould boss, go up the one end opening of mould guide slot, go up the mould boss with it realizes to go up mould guide slot sliding connection the top of cope match-plate pattern can dismantle connect in the bottom of cope match-plate pattern board.

Preferably, still include a first limit structure, include:

the first positioning column is arranged at the edge of the upper die fixing plate and is positioned on one side of the opening end far away from the upper die guide groove;

the first positioning hole is formed in the edge of the upper template corresponding to the first positioning column;

the first fixing piece is arranged on the side face of the upper die fixing plate and covers the opening end of the upper die guide groove.

Preferably, the first limiting structure further comprises at least two upper die guide rails which are arranged oppositely, the upper die guide rails are arranged on the upper die fixing plate and are parallel to the upper die guide grooves, and two sides of the upper die plate are connected with the upper die guide rails in a sliding mode.

Preferably, the lower mold module includes:

the bottom of the lower die plate is provided with at least one lower die boss, the top of the lower die fixing plate is provided with at least one lower die guide groove corresponding to the lower die boss, one end of the lower die guide groove is opened, and the lower die boss is in sliding connection with the lower die guide groove to realize that the bottom of the lower die plate is detachably connected with the top of the lower die fixing plate;

and the fixing plate is arranged at the top of the lower template and is detachably connected with the middle die module.

Preferably, still include a second limit structure, include:

the second positioning column is arranged at the edge of the lower die fixing plate and is positioned at one side of the opening end far away from the lower die guide groove;

the second positioning hole is formed in the edge of the lower template corresponding to the second positioning column;

and the second fixing piece is arranged on the side surface of the lower die fixing plate and covers the opening end of the lower die guide groove.

Preferably, the second limiting structure further comprises at least two lower die guide rails arranged oppositely, the lower die guide rails are arranged on the lower die fixing plate and parallel to the lower die guide grooves, and two sides of the lower die plate are connected with the lower die guide rails in a sliding manner.

Preferably, the middle module comprises:

the bottom of the base is detachably connected with the top of the fixed plate, and a handle is arranged on the side face of the base;

and the middle template is arranged on the top of the base and is detachably connected with the base.

Preferably, the bottom of the upper die module is provided with at least one middle guide pillar, and the middle die module and the lower die module are respectively provided with a guide pillar hole corresponding to the middle guide pillar.

The technical scheme has the following advantages or beneficial effects:

1) the upper die module, the middle die module and the lower die module are integrated and configured to be detachably connected, so that the assembly and disassembly are convenient, the middle die module can be independently disassembled to carry out powder filling before hot pressing and demolding after hot pressing in the preparation process of the integrally formed inductor, the replacement time of a die is effectively saved, and the production efficiency is effectively improved;

2) the upper die module, the middle die module and the lower die module are detachably configured, so that the upper die module, the middle die module and the lower die module are convenient to independently disassemble, assemble and replace, the maintenance time of equipment is effectively saved, and the production and operation cost is further saved;

3) when the production of the integrated into one piece inductance of different models needs to be carried out, only need to change corresponding upper punch and well template can, application scope is wide, and can satisfy the production of different models integrated into one piece inductance simultaneously.

Drawings

Fig. 1 is a schematic overall structure diagram of an integrally formed inductor hot-pressing mold according to a preferred embodiment of the present invention;

FIG. 2 is an exploded view of a scaffold in a preferred embodiment of the invention;

FIG. 3 is an exploded view of the upper mold module in accordance with the preferred embodiment of the present invention;

fig. 4 is an exploded view of an intermediate mold block and a lower mold block in accordance with a preferred embodiment of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The present invention is not limited to the embodiment, and other embodiments may be included in the scope of the present invention as long as the gist of the present invention is satisfied.

In a preferred embodiment of the present invention, based on the above problems in the prior art, there is provided an integrally formed inductor hot-pressing mold, as shown in fig. 1 to 4, including:

the die carrier 1, the die carrier 1 includes a upper die fixed plate 11, there is a lower die fixed plate 12 relatively under the upper die fixed plate 11, connect through a movable strutting piece between lower die fixed plate 12 and the upper die fixed plate 11;

the upper die module 2 is detachably connected to the bottom of the upper die fixing plate 11;

the lower die module 3 is detachably connected to the top of the lower die fixing plate 12;

and the middle die module 4 is detachably connected to one side, facing the upper die module 2, of the lower die module 3, and the upper die module 2, the middle die module 4 and the lower die module 3 are sequentially aligned along the length direction of the movable support.

Specifically, in this embodiment, the upper mold fixing plate 11 and the lower mold fixing plate 12 may be fixed to a hot pressing device during hot pressing, further, the upper mold fixing plate 11 is used to mount and fix the upper mold module 2, and when the upper mold module 2 or a part of the upper mold module 2 needs to be replaced, the upper mold module 2 may be removed from the mold frame 1 as a whole; when the middle die module 4 needs to be replaced, the middle die module 4 can be detached from the lower die module 3 as a whole; when the lower die module 3 needs to be replaced, the middle die module 4 can be detached from the lower die module 3, the lower die module 3 can be detached from the die set 1, and the middle die module 4 and the lower die module 3 can be detached from the die set 1 as a whole. Based on this, need to change or when maintaining the mould module 4 among the integrated into one piece inductance heated press die of this application go up mould module 2, lower mould module 3, need not to demolish die carrier 1 by the hot pressing equipment, the maintenance time of lifting means greatly practices thrift production operation cost.

Further specifically, the preparation process of integrated into one piece inductance can be in proper order including implanting, fill out the powder, hot briquetting and drawing of patterns, wherein, can pull down well mould module 4 in by the integrated into one piece inductance hot pressing mould of this application, implant the magnetic core that the wire winding was accomplished in this well mould module 4 afterwards, can remove well mould module 4 to filling out the powder machine and fill in the magnetic after loading is accomplished, well mould module 4 that will fill out the powder completion loads to the integrated into one piece inductance hot pressing mould's of this application on lower mould module 3 afterwards, and start hot pressing equipment and accomplish the hot pressing action, demolish well mould module 4 with hot briquetting again on by lower mould module 3 at last, and remove to carry out the product drawing of patterns in the drawing of patterns machine, in order to prepare and obtain the integrated into one piece inductance. As an optimal implementation manner, for the production of integrally formed inductors of the same product model, a plurality of middle mold modules 4 may be configured, taking a hot pressing action as an example, after the hot pressing of the current middle mold module 4 is completed, the middle mold module 4 is removed from the lower mold module 3, and then the next middle mold module 4 after powder filling is loaded onto the lower mold module 3 to perform the hot pressing action, so that the waiting time is saved, and the production efficiency is effectively improved.

Preferably, after the middle mold module 4 with powder filled is loaded on the lower mold module 3, the hot pressing device is started to compress the movable supporting piece so as to drive the upper mold fixing plate 11 and the lower mold fixing plate 12 to move relatively, and further drive the upper mold module 2 and the middle mold module 4 to move relatively to realize the hot pressing action.

As a preferred embodiment, the movable supporting member may include four supporting columns 50, and two ends of each supporting column 50 are respectively and fixedly connected to the upper mold fixing plate 11 and the lower mold fixing plate 12, wherein each supporting column 50 is respectively perpendicular to the upper mold fixing plate 11 and the lower mold fixing plate 12, and is used for supporting and positioning the upper mold fixing plate 11 and the lower mold fixing plate 12, so as to ensure that the upper mold fixing plate 11 and the lower mold fixing plate 12 can be vertically aligned to operate during hot pressing. Further, each support column 50 is sleeved with a formwork spring 51, one end, facing the upper die fixing plate 11, of each formwork spring 51 is provided with a formwork spring guide sleeve 52, the formwork spring guide sleeves 52 are abutted to the formwork springs 51, when hot pressing is carried out, the upper die fixing plate 11 compresses the formwork springs 51 through the formwork spring guide sleeves 52 to drive the upper die module 2 and the middle die module 4 to move relatively to realize hot pressing action, and when the hot pressing is completed, the formwork springs 51 are restored by a compression state to realize resetting of the upper die module 2. Preferably, the mold frame spring guide 52 and the corresponding mold frame spring 51 may be provided at one end of the support column 50 facing the lower mold fixing plate 12.

As preferred embodiment, because on ordinary alloy material mould during the continuous punching press on the punch with magnetic powder looks mutual friction can produce magnetism, thereby send into the sticking die and cause the product outward appearance to produce badly, must regularly stop, disassemble the clearance mould, waste time and energy, seriously influence product quality and production efficiency, the integrated into one piece inductance hot pressing mould's of this application die carrier 1, go up mould module 2, lower mould module 3 and well mould module 4 can be ceramic material, because ceramic material's hardness is high, stand wear and tear and do not have the magnetism characteristic, when making the integrated into one piece inductance hot pressing mould of this application possess long-time continuous punching press, can effectively stop mould sticking die phenomenon.

In a preferred embodiment of the present invention, the upper mold block 2 includes:

the top of the upper template 21 is detachably connected with the bottom of the upper mold fixing plate 11;

a female member 22 disposed at the bottom of the upper mold plate 21, the female member 22 having a plurality of first mold cavities formed along the length direction of the movable support member;

at least one upper punch 23, the upper punch penetrates the first die cavity and is in sliding fit with the first die cavity, the bottom end of the upper punch 23 extends out of the female part 22, and the top end of the upper punch 23 is abutted to the upper die plate 21;

and an upper floating plate 24 elastically connected to a lower portion of the female mold member 22, wherein the upper floating plate 24 is provided with a plurality of second mold cavities 241 corresponding to the first mold cavities.

Specifically, in this embodiment, when hot pressing is performed, the upper die module 2 and the middle die module 4 operate relatively, the upper floating plate 24 abuts against the top of the middle die module 4 first, and then pressure is applied continuously, because the upper floating plate 24 is elastically connected to the female die 22, at this time, the female die 22 and the upper die plate 21 drive the upper punch 23 to pass through the second die cavity 241 to contact the middle die module 4 and perform hot pressing on the magnetic core loaded in the middle die module 4 and subjected to powder filling.

In a preferred embodiment, there is provided an elastic coupling structure by which the upper floating plate 24 is elastically coupled to the female mold 22, the elastic coupling structure including:

a plurality of grooves 61 opened at the bottom of the female member 22, each groove 61 being fixed with a guide post spring 62;

a plurality of holes 63 opened on the upper die floating plate 24 and arranged in one-to-one correspondence with the grooves 61;

a plurality of adjustment rods 64, one end of each adjustment rod 64 is clamped on the side wall of the groove 61 and is abutted against the guide post spring 62, and the adjustment rods 64 can vertically move along the side walls to compress the guide post springs 62;

a plurality of bolts 65 are inserted through the bottom of the upper floating plate 24 and are screwed to one ends of the corresponding adjustment rods 64 facing the upper floating plate 24.

Before hot pressing, the hot pressing distance can be adjusted through the bolt 65, that is, the adjusting bolt 65 and the adjusting rod 64 are screwed together to adjust the hot pressing distance, when hot pressing is performed, the upper die floating plate 24 and the female die 22 move relatively by compressing the guide pillar spring 62, so that the upper punch 23 passes through the second die cavity 241 to contact the middle die module 4 and perform hot pressing on the magnetic core loaded in the middle die module 4 and subjected to powder filling, and the hot pressing distance is limited by the adjusting rod 64 and the bolt 65 to prevent the punch of the upper punch 23 from being damaged.

Preferably, one end of the upper punch 23 facing the upper die plate 21 is defined as a punch top, one end of the upper punch 23 facing the upper die floating plate 24 is defined as a punch head, different punch heads 23 need to be configured when different types of inductance products are hot-pressed, in order to be suitable for hot pressing of a plurality of different types of inductance products, the upper punch 23 and the first die cavity are configured to be in sliding fit, when different types of inductance products are hot-pressed, the upper die plate 21 can be detached, the corresponding upper punch 23 is drawn out from the upper side of the female die 22, and then the upper punch 23 of the corresponding type of inductance product is replaced. In a preferred embodiment, in order to be able to apply the hot pressing of a plurality of different types of inductance products, the dimensions of the first die cavity and the second die cavity are not less than the maximum dimension of the punch, so that the punches with different dimensions of different punches 23 can freely extend into the first die cavity and the second die cavity. Further, the shape of the first die cavity is preferably adapted to the shape of the punch top, so that the punch top 23 can be clamped with the first die cavity after being loaded into the female part 22, and further preferably, after the upper punch 23 is loaded, the punch top can be flush with the top of the female part 22, so that the upper die plate 21 can vertically position the upper punch 23 when being covered on the female part 22.

In the preferred embodiment of the present invention, the top of the upper mold plate 21 is provided with at least one upper mold boss 211, the bottom of the upper mold fixing plate 11 is provided with at least one upper mold guide slot 212 corresponding to the upper mold boss 211, one end of the upper mold guide slot 212 is open, and the upper mold boss 211 and the upper mold guide slot 212 are slidably connected to realize that the top of the upper mold plate 21 is detachably connected to the bottom of the upper mold fixing plate 11.

In a preferred embodiment of the present invention, the apparatus further includes a first limiting structure, which includes:

at least one first positioning column, which is arranged at the edge of the upper mold fixing plate 11 and is positioned at one side of the opening end far away from the upper mold guide groove 212;

at least one first positioning hole 111 opened at an edge of the upper mold plate 21 corresponding to the first positioning post;

the first fixing member 112 is disposed on a side surface of the upper mold fixing plate 11 and covers an opening end of the upper mold guide groove 212.

Specifically, in this embodiment, by providing the first positioning column and the first positioning hole 111, the upper die module 2 is limited when sliding into the bottom of the upper die fixing plate 11 along the upper die guide groove 212, that is, when the first positioning column falls into the first positioning hole 111, it indicates that the installation is in place. By providing the first fixing member 112, the upper die module 2 is fixed between the first positioning column and the first fixing member 112. Preferably, the first fixing member 112 is detachably connected to the upper fixing plate 11, and the detachable connection may be a screw fastening manner. Based on this, after the first fixing member 112 is removed, the upper mold block 2 is slid along the upper mold guide groove 212 in a direction away from the first positioning post to remove the upper mold block 2 from the mold frame 1. The first positioning posts are disposed opposite to the second positioning posts 121 of the lower mold module 3, which is not shown in the figure.

In a preferred embodiment of the present invention, the first limiting structure further includes at least two upper mold guide rails 114 disposed oppositely, and disposed on the upper mold fixing plate 11 and parallel to the upper mold guide grooves 212, and two sides of the upper mold plate 21 are slidably connected to the upper mold guide rails 114.

Specifically, in this embodiment, the two upper mold rails 114 are provided to position the upper mold block 2 in a direction perpendicular to the upper mold guide groove 212, thereby further ensuring that the position of the upper mold block is kept stable during hot pressing.

In a preferred embodiment of the present invention, the lower mold module 3 includes:

the bottom of the lower template 31 is provided with at least one lower die boss 311, the top of the lower die fixing plate 12 is provided with at least one lower die guide groove 312 corresponding to the lower die boss 311, one end of the lower die guide groove 312 is open, and the lower die boss 311 is in sliding connection with the lower die guide groove 312 to realize that the bottom of the lower template 31 is detachably connected to the top of the lower die fixing plate 12;

and the fixing plate 32 is arranged at the top of the lower template 31, and the fixing plate 32 is detachably connected with the middle die block 4.

In a preferred embodiment of the present invention, the apparatus further includes a second limiting structure, which includes:

at least one second positioning column 121 disposed at the edge of the lower mold fixing plate 12 and located at one side of the opening end far away from the lower mold guiding groove 312;

at least one second positioning hole 122, which is opened at the edge of the lower mold plate 31 corresponding to the second positioning column 121;

and a second fixing member 123 provided on a side surface of the lower mold fixing plate 12 and covering an opening end of the lower mold guide groove 312.

Specifically, in the present embodiment, the second positioning columns 121 and the second positioning holes 122 are arranged, so that the lower mold module 3 is limited when sliding into the top of the lower mold fixing plate 12 along the lower mold guiding grooves 312, that is, when the second positioning columns 121 fall into the second positioning holes 122, the installation is indicated in place. By providing the second fixing member 123, the lower mold module 3 is fixed between the second positioning column 121 and the second fixing member 123. Preferably, the second fixing member 123 is detachably connected to the lower mold fixing plate 12, and the detachable connection may be a screw fastening manner. Based on this, after the second fixing member 123 is removed, the lower mold module 3 is slid along the lower mold guiding groove 312 in a direction away from the second positioning column 121, so that the lower mold module 3 is removed from the mold frame 1.

In a preferred embodiment of the present invention, the second limiting structure further includes at least two lower mold guide rails 124 disposed opposite to each other, and disposed on the lower mold fixing plate 12 and parallel to the lower mold guide grooves 312, and two sides of the lower mold plate 31 are slidably connected to the lower mold guide rails 124.

Specifically, in this embodiment, the two lower mold guide rails 124 are provided to position the lower mold block 3 in a direction perpendicular to the lower mold guide grooves 312, so as to further ensure that the position of the lower mold block is kept stable during hot pressing.

In a preferred embodiment of the present invention, middle module 4 includes:

the bottom of the base 41 is detachably connected with the top of the fixing plate 32, and a handle 411 is arranged on the side surface of the base 41;

and the middle template 42 is arranged on the top of the base 41 and is detachably connected with the base 41.

In the preferred embodiment of the present invention, two sides of the base 41 perpendicular to the side of the handle 411 are oppositely provided with a middle mold guide 412, two sides of the fixing plate 3 are oppositely provided with a base guide 413, two sides of the middle mold 42 are detachably connected with the middle mold guide 412, and the middle mold guide 412 is detachably connected with the base guide 413.

Specifically, in this embodiment, in the preparation process of the integrally formed inductor, the middle mold module 4 needs to be moved to different devices to complete the corresponding process flow, and the operation is more convenient by setting the handle 411. The middle mold plate 42 is detachably connected with the base 41, so that the middle mold plate 42 can be replaced conveniently according to the product preparation requirements of different inductance models, a plurality of third mold cavities 421 are arranged on the middle mold plate 42, and the third mold cavities 421 are matched with the punch specifications of the upper punch 23. Furthermore, a third die cavity 421 suitable for different punch specifications can be disposed on one middle die plate 42, and the corresponding upper punch 23 is installed at the corresponding position in the female die member 22, so as to realize simultaneous preparation of products with different inductance models, and further improve the production efficiency.

As a preferred embodiment, the device further comprises a third limiting structure, which comprises:

at least one third positioning column 321 disposed at the edge of the fixing plate 32;

at least one third positioning hole 322 is opened on the edge of the base 41 and the middle mold plate 42 corresponding to the third positioning post 321.

Specifically, in the present embodiment, the third positioning posts 321 and the third positioning holes 322 are arranged, so that the lower mold module 3 is limited when sliding into the top of the lower mold fixing plate 12 along the lower mold guiding grooves 312, that is, when the third positioning posts 321 fall into the third positioning holes 322, the lower mold module is installed in place, and the middle mold plate 42 is fixed between the third positioning posts 321 and the handle 411.

In the preferred embodiment of the present invention, the bottom of the upper mold 2 is provided with at least one middle guide post 25, and the middle mold 4 and the lower mold 3 are respectively provided with guide post holes 26 corresponding to the middle guide posts 25.

Specifically, in the present embodiment, the middle guide post 25 is preferably disposed at the bottom of the female mold element 22, and the upper floating plate 24 is correspondingly provided with a hole for the middle guide post 25 to pass through. When the hot pressing device drives the upper die fixing plate 11 and the lower die fixing plate 12 to move relatively, before the upper die module 2 contacts the middle die module 4, the middle guide post 25 firstly sequentially penetrates through the guide post holes 26 of the middle die module 4 and the lower die module 3, so that the upper die module 2, the middle die module 4 and the lower die module 3 are sequentially aligned along the vertical direction, the punch of the upper punch 23 is further ensured to be aligned with the third die cavity of the middle die module 4, and the punch of the upper punch 23 is prevented from being dislocated with the third die cavity of the middle die module 4 during hot pressing.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.