CN214324017U - Mould for manufacturing injection molding inductor - Google Patents

Mould for manufacturing injection molding inductor Download PDF

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Publication number
CN214324017U
CN214324017U CN202022920438.5U CN202022920438U CN214324017U CN 214324017 U CN214324017 U CN 214324017U CN 202022920438 U CN202022920438 U CN 202022920438U CN 214324017 U CN214324017 U CN 214324017U
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mold
groove
grooves
die
cover
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CN202022920438.5U
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赵家彦
李永权
高维政
刘宇
杜君豪
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Kunshan Maji Electronics Co ltd
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Kunshan Maji Electronics Co ltd
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Abstract

The utility model relates to a mould of preparation injection moulding inductance installs on the board, include: the die closing module is provided with an upper die cover arranged on the machine table, die grooves and grooves are formed in two opposite sides of the upper die cover, and a sprue channel communicated with the die grooves and the grooves is formed in the upper die cover; the demolding module is provided with a middle mold which is movably arranged below the upper mold cover, the middle mold is provided with a plate body, the plate body is provided with through grooves and bosses which are arranged in an array mode, and the bosses are arranged around the through grooves and matched with the mold grooves; the upper punching module is provided with an upper punch which is movably arranged above the upper die cover and matched with the groove; the lower punching module is provided with a lower punch which is movably arranged on the machine table and matched with the through groove. The upper punch extrudes the liquid magnetic powder glue in the groove into the sprue channel, and injects into the space formed by the die groove, the boss and the lower punch in the through groove, the liquid magnetic powder glue and the coil are pressed into a whole, and the lower punch moves towards the upper die cover in the through groove to realize demoulding, so that the structure is simple, and the processing cost is lower.

Description

Mould for manufacturing injection molding inductor
Technical Field
The utility model relates to an inductor forming die technical field especially relates to a mould of preparation injection moulding inductance.
Background
The inductor is one of three passive components, and is widely applied to various electronic fields such as consumer electronics, communication, automobiles, aerospace and the like, and the integrally formed inductor is increasingly applied to complex and harsh environments due to good structure and electrical performance of the integrally formed inductor.
At present, an integrally formed inductor is mainly formed by pressing metal powder and a coil for two times in a cold pressing one-step forming mode or a combination mode of one-step cold pressing and secondary hot pressing by an integrally formed inductance die, but the integrally formed inductance die is limited by powder pressing density during combined pressing, the electrical characteristics of the inductor prepared by the integrally formed inductance die need to be improved, researches show that the integrally formed inductor prepared by the combination pressing of the liquid magnetic powder glue and the coil has better electrical characteristics, but the existing integrally formed inductance die is only suitable for the combined pressing of the metal powder and the coil due to the limitation of the composition structure of the liquid magnetic powder glue in a liquid state, cannot press the liquid magnetic powder glue and the coil, and causes great trouble to product development, and if the existing injection molding machine is adopted to prepare the inductor by an injection molding process, the investment cost can be infinitely increased, resulting in higher production costs.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a mold for manufacturing an injection molded inductor, which is difficult to manufacture the integrally molded inductor formed by pressing the liquid magnetic powder and the coil in combination.
A mold for manufacturing an injection molding inductor is installed on a machine table and comprises:
the die closing module is provided with an upper die cover arranged on the machine table, die grooves and grooves are formed in two opposite sides of the upper die cover, and a sprue channel communicated with the die grooves and the grooves is formed in the upper die cover;
the demolding module is provided with a middle mold which is movably arranged below the upper mold cover, the middle mold is provided with a plate body, the plate body is provided with through grooves and bosses which are arranged in an array mode, and the bosses are arranged around the through grooves and matched with the mold grooves;
the upper punching module is provided with an upper punch which is movably arranged above the upper die cover and matched with the groove;
the lower punching module is provided with a lower punch which is movably arranged on the machine table and matched with the through groove.
In one embodiment, the boss comprises two protruding parts arranged at intervals, and the two protruding parts are symmetrically arranged on two sides of the through groove; the die cavity comprises two concave parts and a spacing part, the concave parts are matched with the convex parts, and the spacing part corresponds to a gap between the two convex parts.
In one embodiment, the plate body is provided with a plurality of pits for exhausting air, and the pits are arranged on two sides of the boss and located between the two bulges.
In one embodiment, the gate channel is arranged at the bottom of the groove and opens at the side wall of the groove, and the gate channel and the side wall of the groove extend to the side wall of the mold cavity in an inclined manner.
In one embodiment, the gate passage extends to a side wall of the spacer portion, and an open end on the spacer portion is located at a middle position of the spacer portion.
In one embodiment, the number of the gate channels is multiple, and the multiple gate channels are symmetrically arranged on the opposite side walls of the groove.
In one embodiment, a first heating pipe is arranged in the upper die cover, and the first heating pipe is positioned above the sprue channel and close to the sprue channel; and/or a second heating pipe is arranged in the middle die, and the extending direction of the second heating pipe is parallel to the arrangement direction of the bosses and is close to the bosses.
In one embodiment, the mold clamping module further includes a first supporting plate fixed at a predetermined height of the machine, the first supporting plate is formed with a first through hole penetrating through a thickness thereof, and the upper mold cover is fixed to the first supporting plate and covers the first through hole.
In one embodiment, the mold for manufacturing the injection molding inductor further comprises at least two sets of connecting assemblies, each connecting assembly comprises a linear optical axis, a first linear bearing, a fixed bearing, a second linear bearing and an elastic member, wherein:
the first linear bearing, the elastic piece, the fixed bearing and the second linear bearing are sequentially sleeved on the linear optical axis;
the upper punch is fixed on a second supporting plate, and a first accommodating hole for accommodating the first linear bearing is formed in the second supporting plate;
the first supporting plate is provided with a second accommodating hole for accommodating the fixed bearing;
the plate body is fixed on a third supporting plate, and a third containing hole used for containing the second linear bearing is formed in the third supporting plate.
In one embodiment, the undershoot module further includes a base and a fourth support plate fixed to the base, wherein:
the base is fixed on the machine table and provided with at least one slot, and the opening of the slot is formed in the surface, close to the fourth supporting plate, of the base and is opposite to the lower punch;
the lower punch is fixed on one side, far away from the base, of the fourth supporting plate.
In the above mold for manufacturing the injection molding inductor, the middle mold and the upper punch are mounted on the upper mold cover, so that the mold closing module, the mold releasing module and the upper punch are assembled into a whole and move up and down, and the upper mold cover and the lower punch are mounted on the machine table, so that the mold for integrally manufacturing the injection molding inductor is mounted on the machine table and the machine table drives a plurality of parts in the mold for manufacturing the injection molding inductor to move. The specific working process is as follows: adding liquid magnetic powder glue into a groove of an upper die cover, placing a coil on a boss of a middle die, enabling an upper punch to move towards the upper die cover under the action of external force, enabling the middle die to move towards the upper die cover under the action of external force, enabling the die groove to be abutted to the boss, extruding the liquid magnetic powder glue in the groove into a sprue channel under the action of external force when the upper punch moves into the groove, injecting the liquid magnetic powder glue into a space formed by the die groove, the boss and a lower punch in a through groove through the sprue channel, pressing the liquid magnetic powder glue and the coil into an integrally formed injection molding inductor in the space, and after pressing, enabling the lower punch to move towards the upper die cover in the through groove to eject the injection molding inductor out of the boss to realize demolding, resetting the upper punch and the middle die to finish the preparation of the integrally formed inductor.
Therefore, the injection molding inductor can be conveniently manufactured through the mold for manufacturing the injection molding inductor, and the mold for manufacturing the injection molding inductor is simple in structure and low in processing cost.
Drawings
Fig. 1 is a schematic structural diagram of a mold and a machine station forming module for manufacturing an injection molded inductor according to the present invention;
fig. 2 is a schematic structural diagram of a mold for manufacturing an injection molded inductor according to the present invention;
fig. 3 is an exploded view of the mold for making the injection molded inductor of fig. 2;
fig. 4 is a right side view of the mold for making the injection molded inductor of fig. 2;
fig. 5 is a cross-sectional view of the mold for manufacturing the injection molded inductor in fig. 4 in a direction a-a;
fig. 6 is a schematic structural diagram of an upper mold cover in a mold for manufacturing an injection molded inductor according to the present invention;
FIG. 7 is a schematic view of the upper mold cover of FIG. 6 at another angle;
FIG. 8 is a bottom view of the upper mold cover of FIG. 6;
FIG. 9 is a sectional view of the upper mold cover and the liquid magnetic powder glue module in the B-B direction of FIG. 8;
fig. 10 is an explosion diagram of a module formed by a middle mold and a coil material sheet in a mold for manufacturing an injection molded inductor according to the present invention.
Reference numerals:
10. manufacturing a mold for injection molding of the inductor;
100. a mold closing module; 110. putting a mold cover; 111. a die cavity; 1111. a recessed portion; 1112. a spacer section; 112. a groove; 113. a gate channel; 114. a first heating pipe; 120. a first support plate; 121. a first through hole; 122. a second housing hole;
200. demolding the module; 210. a middle mold; 211. a plate body; 212. a through groove; 213. a boss; 2131. a projection; 2132. a gap; 214. a pit; 215. a second heating pipe; 220. a third support plate; 221. a third housing hole; 222. a second through hole;
300. an upper punching module; 310. an upper punch; 320. a second support plate; 321. a first housing hole; 330. punching a fixed block;
400. an undershoot module; 410. a lower punch; 420. a base; 421. grooving; 430. a fourth support plate; 440. cushion blocks;
500. a connecting assembly; 510. a linear optical axis; 520, respectively; a first linear bearing; 530. fixing the bearing; 540. a second linear bearing; 550. an elastic member;
20. a machine platform; 21. a column;
30. liquid magnetic powder glue;
40. a coil web; 41. and a coil.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The technical solution provided by the embodiments of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present invention provides a mold 10 for manufacturing an injection molded inductor, wherein the mold 10 for manufacturing an injection molded inductor is used for combined pressing of liquid magnetic powder glue and a coil to form an injection molded inductor. The mould 10 of preparation injection moulding inductance is installed on board 20, and this board 20 can be the four-column press, through on the mould 10 direct application four-column press with preparation injection moulding inductance to can provide drive power for the mould 10 of preparation injection moulding inductance comparatively conveniently, simple structure, and saved investment cost.
As shown in fig. 1, 2 and 3, the mold 10 for manufacturing the injection molded inductor includes a mold clamping module 100, a mold releasing module 200, an upper punch module 300 and a lower punch module 400, wherein:
referring to fig. 4, 5, 6, 7, 8 and 9, the mold clamping module 100 has an upper mold cover 110, the upper mold cover 110 is mounted on the machine 20, mold cavities 111 and grooves 112 are formed on two opposite sides of the upper mold cover 110, and gate channels 113 communicating the mold cavities 111 and the grooves 112 are formed in the upper mold cover 110. When the injection molding inductor is specifically arranged, the upper mold cover 110 may be fixedly installed on the machine table 20 to provide a support for the mold 10 for manufacturing the injection molding inductor, a groove 112 is formed on one side of the upper mold cover 110 away from the machine table 20, the groove 112 is opened on the surface of the upper mold cover 110 away from the machine table 20, and extends to a certain depth towards the inside of the upper mold cover 110, and the depth is smaller than the thickness of the upper mold cover 110 in the direction towards the machine table 20 to form the groove 112 with a groove bottom, so as to facilitate the placement of the liquid magnetic powder adhesive 30; a die cavity 111 is formed on one side of the upper die cover 110 facing the machine table 20, the shape of the die cavity 111 matches with the shape of the coil 40, the die cavity 111 opens on the surface of the upper die cover 110 facing the machine table 20 and extends to a certain depth towards the inside of the upper die cover 110, and the depth is smaller than the thickness of the upper die cover 110 in the direction away from the machine table 20, so as to form a press forming space for the liquid magnetic powder glue 30 and the coil 40; the number of the cavities 111 may be multiple, and the multiple cavities 111 are distributed in an array, for example, the multiple cavities 111 may be distributed in an array in two, three or more rows, and correspondingly, the number of the grooves 112 may be two, three or more, and the arrangement relationship between the cavities 111 and the grooves 112 may be multiple, for example, the grooves 112 may be arranged between two rows of the cavities 111, and of course, the number and arrangement relationship between the cavities 111 and the grooves 112 are not limited thereto; the gate channel 113 is disposed in the groove 112, and one end of the gate channel 113 is open to a side wall or a bottom wall of the groove 112, and the other end of the gate channel 113 is open to a side wall of the cavity 111, and an extension path of the gate channel 113 in the upper mold cover 110 may be a straight line or a curved line.
Referring also to fig. 10, the stripper module 200 has a middle mold 210, the middle mold 210 is located below the upper mold cover 110, and the middle mold 210 is movably mounted to the upper mold cover 110, the middle mold 210 has a plate body 211, the plate body 211 has through slots 212 and bosses 213 arranged in an array, the bosses 213 are disposed around the through slots 212, and the bosses 213 are matched with the mold slots 111. In a specific setting, the middle mold 210 is installed below the upper mold cover 110, and the middle mold 210 can move up and down relative to the lower mold cover; the number of the through grooves 212 and the bosses 213 is plural, and the bosses 213 and the through grooves 212 are arranged in a one-to-one correspondence, the bosses 213 and the plate body 211 may be of an integrated structure, for example, the body, the through grooves 212 and the bosses 213 are integrally manufactured by a casting process, and of course, the structural relationship between the bosses 213 and the plate body 211 is not limited thereto; the bosses 213 are disposed outside the through slots 212, and the bosses 213 are disposed around the through slots 212 to facilitate placement of the coils 40, the bosses 213 are configured and numbered to match the mold chase 111, and the protruding surfaces of the bosses 213 are complementary to the recessed surfaces of the mold chase 111 to facilitate complete covering of the upper mold cover 110 on the middle mold 210 during clamping and pressing of the knock-out module 200 and the knock-out module 100, thereby facilitating implementation of the pressing process.
The upper die block 300 has an upper punch 310, the upper punch 310 is located above the upper die cover 110, and the upper punch 310 is movably mounted to the upper die cover 110, the upper punch 310 is matched with the recess 112. In a specific arrangement, the upper punch 310 is mounted on the upper die cover 110, and the upper punch 310 can move up and down relative to the upper die cover 110; the upper punch 310 is shaped and sized to match the recess 112, the size of the upper punch 310 is slightly smaller than the size of the recess 112 so that the upper punch 310 can be inserted into the recess 112, and the shape of the upper punch 310 substantially conforms to the shape of the recess 112, for example, the upper punch 310 and the recess 112 are rectangular in cross section so that the upper punch 310 extrudes the liquid magnetic powder paste 30 into the gate passage 113 when inserted into the recess 112.
The lower die block 400 has a lower punch 410, the lower punch 410 is located below the middle die 210, and the lower punch 410 is movably mounted to the machine table 20, the lower punch 410 is matched with the through groove 212. In a specific setting, the lower punch 410 is mounted on the machine 20, and the lower punch 410 can move up and down relative to the machine 20; the lower punch 410 is matched in shape and size to the through groove 212, the lower punch 410 is slightly smaller in size than the through groove 212 so that the lower punch 410 can be inserted into the through groove 212, and the lower punch 410 is substantially identical in shape to the through groove 212, for example, the lower punch 410 and the through groove 212 are both rectangular in cross section so that the lower punch 410 can be inserted into the through groove 212, and the lower punch 410 can be easily fitted with the die groove 111 and the boss 213 to form a press-molding space of the injection-molded inductor.
In the above-described mold 10 for manufacturing an injection molded inductor, the middle mold 210 and the upper punch 310 are mounted on the upper mold cover 110 so that the mold clamping module 100, the mold releasing module 200, and the upper punch 300 are assembled as one body and move up and down, and the upper mold cover 110 and the lower punch 410 are mounted on the machine base 20 so that the mold 10 for integrally manufacturing an injection molded inductor is mounted on the machine base 20 and the movement of a plurality of parts in the mold 10 for manufacturing an injection molded inductor is driven by the machine base 20. The specific working process is as follows: adding liquid magnetic powder glue 30 into a groove 112 of an upper die cover 110, placing a coil material sheet 40 on a boss 213 of a middle die 210, enabling a coil 41 to be positioned in a through groove 212, enabling an upper punch 310 to move towards the upper die cover 110 under the action of external force, enabling the middle die 210 to move towards the upper die cover 110 under the action of external force so as to enable a die groove 111 to be abutted against the boss 213, enabling the liquid magnetic powder glue 30 in the groove 112 to be extruded into a gate channel 113 under the action of external force when the upper punch 310 moves into the groove 112, enabling the liquid magnetic powder glue 30 to be injected into a space formed by the die groove 111, the boss 213 and a lower punch 410 in the through groove 212 through the gate channel 113, enabling the liquid magnetic powder glue 30 to be pressed into an integrally-formed injection-molded inductor together with the coil 40 in the space, enabling the lower punch 410 to move towards the upper die cover 110 in the through groove 212 after pressing is finished so as to eject the injection-molded inductor out of the boss 213, and enabling the upper punch 310 and the middle die 210 to reset, and finishing the preparation of the integrally formed inductor.
Therefore, the mold 10 for manufacturing the injection molded inductor can conveniently realize the preparation of the injection molded inductor, and the mold 10 for manufacturing the injection molded inductor has a simple structure and lower processing cost.
The structural forms of the boss 213 and the mold cavity 111 are various, as shown in fig. 6, 7, 8, 9 and 10, in a preferred embodiment, the boss 213 includes two protrusions 2131, the two protrusions 2131 are arranged at intervals, the two protrusions 2131 are symmetrically arranged on two sides of the through groove 212, and a gap 2132 is arranged between the two protrusions 2131 on two sides of the through groove 212; the mold chase 111 includes two recesses 1111 and two spacers 1112, the two recesses 1111 and the two spacers 1112 are connected together, the recesses 1111 and the protrusions 2131 are matched, and the spacers 1112 correspond to the gaps 2132 between the two protrusions 2131.
In the mold 10 for manufacturing the injection molded inductor, when the mold clamping module 100 and the mold stripping module 200 are clamped, the two protrusions 2131 of the boss 213 are inserted into the two recesses 1111 of the mold cavity 111, respectively, the two spacers 1112 of the mold cavity 111 are inserted into the gap 2132 between the protrusions 2131 of the boss 213, respectively, at this time, the protrusions 2131 abut against the end faces of the recesses 1111, the spacers 1112 abut against the plate body 211, and the boss 213, the mold cavity 111, and the lower punch 410 in the through groove 212 together form the press molding space of the injection molded inductor, so that the boss 213 and the mold cavity 111 in this configuration form can easily perform the press molding of the injection molded inductor. In a specific arrangement, the protruding portion 2131 may be a square platform, and correspondingly, the recessed portion 1111 may be a square groove, and the protruding portion 2131 may also be a trapezoidal platform, and correspondingly, the recessed portion 1111 may be an inverted trapezoidal groove; two adjacent bosses 213 may share one protrusion 2131, and the adjacent protrusions 2131 of two adjacent bosses 213 may be spaced from each other; of course, the structural form of the boss 213 and the die cavity 111 is not limited to the above structural form, and may be other structural forms that can meet the requirement, for example, the boss 213 may be an annular boss, and the die cavity 111 may be an annular groove.
In order to facilitate the air discharge from the mold 10 for manufacturing the injection molded inductor during the injection molding, as shown in fig. 10, specifically, a plurality of concave recesses 214 are provided on the plate body 211, the concave recesses 214 are used for air discharge, the plurality of concave recesses 214 are provided on both sides of the boss 213, and each concave recess 214 is located between two protrusions 2131.
In the mold 10 for manufacturing the injection molding inductor, the concave recesses 214 are formed in the plate body 211, so that when the mold clamping module 100 and the mold stripping module 200 are clamped, the two spacing parts 1112 of the mold cavity 111 are respectively inserted into the gaps 2132 between the protruding parts 2131 of the bosses 213, at this time, the spacing parts 1112 are in contact with the surface of the plate body 211 opposite to each other, and the concave recesses 214 are used for exhausting air in the mold 10 for manufacturing the injection molding inductor during injection molding, thereby facilitating the realization of the injection molding process. In a specific configuration, the concave portion 214 may be a slot that is opened on a surface of the plate body 211 facing the mold cavity 111 and extends to a certain thickness toward the inside of the plate body 211.
To facilitate the injection of the liquid magnetic powder magnetic paste 30, specifically, as shown in fig. 6, 7 and 9, the gate channel 113 is disposed at the bottom of the groove 112, and the gate channel 113 is opened at the side wall of the groove 112, and the gate channel 113 and the side wall of the groove 112 extend obliquely to the side wall of the cavity 111.
In the mold 10 for manufacturing the injection molding inductor, the gate channel 113 is defined to be arranged at the bottom of the groove 112, and the gate channel 113 is opened at the side wall of the groove 112, so that the open end of the gate channel 113 is close to the intersection position of the bottom wall and the side wall of the groove 112, and more liquid magnetic powder glue 30 can enter the gate channel 113; the gate channel 113 and the side wall of the groove 112 are defined to extend obliquely to the side wall of the mold cavity 111, so that the gate channel 113 extends obliquely downward relative to the side wall of the groove 112, and the liquid magnetic powder adhesive 30 can smoothly enter the mold cavity 111 through the gate channel 113. In a specific arrangement, the gate channel 113 may be disposed near the bottom of the groove 112, and the gate channel 113 may be directly opened at the intersection of the bottom wall and the side wall of the groove 112, although the disposition position of the gate channel 113 is not limited thereto; the extending path of the gate passage 113 may be a straight line inclined downward relative to the side wall of the groove 112, and the extending path of the gate passage 113 may also be a curve inclined downward relative to the side wall of the groove 112, for example, the extending path of the gate passage 113 may be a circular arc; of course, the extending path of the gate passage 113 is not limited to this, and may be in other forms as required.
To ensure a good injection molding effect, more specifically, as shown in fig. 6, 7, and 9, gate channel 113 extends to the side wall of spacer 1112, and the open end of gate channel 113 on spacer 1112 is located at the middle position of spacer 1112.
In the mold 10 for manufacturing the injection molding inductor, the gate channel 113 is limited to extend to the sidewall of the spacer 1112, so that the liquid magnetic powder adhesive 30 can be uniformly distributed on the coil 40, and the occurrence of uneven coating is avoided; by limiting the opening end of the gate channel 113 on the spacing part 1112 to be located at the middle position of the spacing part 1112, the uniform distribution of the liquid magnetic powder glue 30 can be better ensured, so that the injection molding effect is better. In a specific arrangement, the open end of gate channel 113 may be disposed on the sidewall of spacer 1112, but the arrangement of the open end of gate channel 113 is not limited thereto, and the open end of gate channel 113 may be disposed on the sidewall of recess 1111. While the open end of gate channel 113 is disposed on the sidewall of spacer 1112, the open end of gate channel 113 may be located in the middle of spacer 1112, and of course, the location of the open end of gate channel 113 is not limited thereto, and the open end of gate channel 113 may also be disposed in the area near the middle to accommodate different coils 40.
In order to improve the injection molding efficiency, as shown in fig. 6, 7 and 9, in a preferred embodiment, the number of gate channels 113 is plural, and the plural gate channels 113 are symmetrically disposed on the opposite side walls of the groove 112.
In the mold 10 for manufacturing the injection molding inductor, the gate channels 113 are symmetrically arranged on the opposite side walls of the groove 112, so that when one upper punch 310 is inserted into the groove 112, the liquid magnetic powder glue 30 enters the mold cavity 111 through the gate channels 113 opened on the opposite side walls of the groove 112, and simultaneously, a plurality of coils 40 can be molded, thereby improving the injection molding efficiency. In specific arrangement, only one group of opposite side walls of the groove 112 may be provided with the plurality of gate channels 113, so that two groups of coils 40 can be formed simultaneously, and two groups of opposite side walls of the groove 112 may be provided with the plurality of gate channels 113, so that four groups of coils 40 can be formed simultaneously, although the arrangement mode of the gate channels 113 is not limited thereto; and a plurality of gate channels 113 may be symmetrically disposed on opposite sidewalls of recess 112. a plurality of gate channels 113 may also be offset on opposite sidewalls of recess 112 to accommodate different coils 40.
In order to improve the applicability of the mold 10 for manufacturing the injection molded inductor, in a preferred embodiment, as shown in fig. 6 and 10, a first heating pipe 114 is disposed in the upper mold cover 110, the first heating pipe 114 is located above the gate channel 113, and the first heating pipe 114 is close to the gate channel 113; and/or, a second heating pipe 215 is arranged in the middle mold 210, the extending direction of the second heating pipe 215 is parallel to the arrangement direction of the boss 213, and the second heating pipe 215 is arranged close to the boss 213.
In the above mold 10 for manufacturing the injection molded inductor, the liquid magnetic powder glue 30 can be directly fed into the groove 112, at this time, the first heating pipe 114 is arranged on the upper mold cover 110 to improve the fluidity of the liquid magnetic powder glue 30 in the sprue channel 113, so that the liquid magnetic powder glue 30 can be conveniently injected into the mold cavity 111, and the second heating pipe 215 is arranged in the middle mold 210, so that the liquid magnetic powder glue 30 can be fully and uniformly coated on the coil 40 during injection molding, thereby ensuring the injection molding effect; the magnetic powder glue can also be fed into the groove 112, at this time, the first heating pipe 114 is arranged on the upper die cover 110 to heat the magnetic powder glue, so that the magnetic powder glue is softened into a liquid state and is convenient to inject, and the second heating pipe 215 is arranged in the middle die 210 to enable the magnetic powder glue to uniformly flow to the coil 40 and facilitate injection molding. In specific arrangement, the first heating pipe 114 may be arranged only in the upper mold cover 110, and at this time, the first heating pipe 114 is located above the gate passage 113, and the first heating pipe 114 is close to the gate passage 113, so as to heat the magnetic powder adhesive or the liquid magnetic powder adhesive 30, and reduce heat waste, although the arrangement position of the first heating pipe 114 is not limited thereto; the second heating pipe 215 may be disposed only in the middle mold 210, at this time, the extending direction of the second heating pipe 215 is parallel to the arrangement direction of the boss 213, and the second heating pipe 215 is disposed near the boss 213, so as to heat the magnetic powder cement or the liquid magnetic powder cement 30, and reduce the heat waste, although the disposition position of the second heating pipe 215 is not limited thereto; the first heating pipe 114 may be further disposed in the upper mold cover 110, and the second heating pipe 215 is disposed in the middle mold 210, so as to better heat the magnetic powder glue or the liquid magnetic powder glue 30, so that the magnetic powder glue or the liquid magnetic powder glue 30 is heated up and down uniformly, thereby improving the injection molding effect.
In order to facilitate the installation of the upper mold cover 110 on the machine 20, as shown in fig. 1, 2 and 3, in a preferred embodiment, the mold clamping module 100 further includes a first supporting plate 120, the first supporting plate 120 is fixed at a set height of the machine 20, the first supporting plate 120 is provided with a first through hole 121 penetrating through a thickness thereof, the upper mold cover 110 is fixed on the first supporting plate 120, and the upper mold cover 110 covers the first through hole 121.
In the mold 10 for manufacturing an injection molded inductor, the first support plate 120 is disposed to support the upper mold cover 110, and the first support plate 120 is fixed at a set height of the machine 20 by the plurality of columns 21 to dispose the upper mold cover 110 at the set height of the machine 20, so as to facilitate the disposition of the demolding module 200 and the lower punching module 400; by providing the first through hole 121 on the first support plate 120 and defining the upper mold cover 110 to cover the first through hole 121, the cavity 111 of the upper mold cover 110 is disposed right opposite to the first through hole 121 so that the cavity 111 exposes the first support plate 120 after the upper mold cover 110 is fixed to the first support plate 120, thereby enabling to secure a mold closing operation. When the device is specifically arranged, the first supporting plate 120 is fixedly connected with the upright 21 fixed on the machine 20 by means of fastening, screwing and the like, and the upper mold cover 110 is fixedly connected with the first supporting plate 120 by means of fastening, screwing and the like, however, the fixing connection between the first supporting plate 120 and the machine 20, and between the upper mold cover 110 and the first supporting plate 120 is not limited thereto, and other modes meeting the requirements may also be adopted; of course, the upper mold cover 110 may be fixed on the machine table 20 by the first support plate 120, and the upper mold cover 110 and the first support plate 120 may also be of an integral structure and formed by one-step processing, for example, by casting.
To facilitate assembly of the mold 10 for manufacturing the injection molded inductor, as shown in fig. 2 and fig. 3, specifically, the mold 10 for manufacturing the injection molded inductor further includes at least two sets of connecting assemblies 500, the specific number of the connecting assemblies 500 may be two, three, four or more, each set of connecting assemblies 500 includes a linear optical axis 510, a first linear bearing 520, a fixed bearing 530, a second linear bearing 540 and an elastic member 550, wherein:
the linear optical axis 510 is sequentially sleeved with a first linear bearing 520, an elastic element 550, a fixed bearing 530 and a second linear bearing 540; in a specific arrangement, the first linear bearing 520 and the second linear bearing 540 may move up and down along the axial direction with respect to the linear optical axis 510, the elastic member 550 is disposed between the first linear bearing 520 and the fixed bearing 530 and can be compressed or rebound when the first linear bearing 520 and the fixed bearing 530 move relatively, the elastic member 550 may be a compression spring or a spring of other form, and of course, the elastic member 550 is not limited thereto and may be in other satisfactory structural forms.
The upper punch 310 is fixed to the second support plate 320, and the second support plate 320 is provided with a first accommodating hole 321 for accommodating the first linear bearing 520; when specifically setting, the upper die block 300 includes an upper punch fixing block 330, a second support plate 320, and an upper punch 310, the upper punch 310 is fixed on the upper punch fixing block 330 by means of snap connection, screw connection, or the upper punch 310 and the upper punch fixing block 330 are integrally formed by casting or the like, the upper punch fixing block 330 is fixed on the second support plate 320 by means of snap connection, screw connection, or the like, of course, the upper punch 310, the upper punch fixing block 330, and the second support plate 320 may be integrally formed by casting or the like, the first linear bearing 520 is disposed in the first accommodation hole 321, and the first linear bearing 520 is fixed on the second support plate 320 by means of screw connection, snap connection, or the like.
The first supporting plate 120 is provided with a second accommodating hole 122 for accommodating the fixed bearing 530; in a specific arrangement, the fixing bearing 530 is disposed in the second receiving hole 122, and the fixing bearing 530 is fixed to the first support plate 120 by a screw connection, a snap connection, or the like.
The plate body 211 is fixed to the third supporting plate 220, and a third accommodating hole 221 for accommodating the second linear bearing 540 is formed in the third supporting plate 220. In a specific arrangement, the demolding module 200 includes a third supporting plate 220 and a middle mold 210, which is used for fixing the coil 40, and the boss 213 of the middle mold 210 has a position for placing the coil 40 and has a through groove 212 matching with the lead frame of the coil 40 in size, so as to firmly fix the lead frame; the plate body 211 is fixed on the third support plate 220 by means of screw connection, snap connection and the like, the third support plate 220 is provided with a second through hole 222, the plate body 211 is fixed on the third support plate 220, and the through groove 212 is arranged opposite to the second through hole 222 so as to expose the through groove 212, thereby facilitating the movement of the lower punch 410; the middle mold 210 and the third support plate 220 may be integrally formed by casting, etc., the second linear bearing 540 is disposed in the third receiving hole 221, and the second linear bearing 540 is fixed to the third support plate 220 by means of screw connection, snap connection, etc.
In the above mold 10 for manufacturing the injection molded inductor, the first linear bearing 520 is installed in the first accommodating hole 321, the fixing bearing 530 is installed in the second accommodating hole 122, and the linear optical axis 510 is inserted into the first linear bearing 520, the fixing bearing 530 and the second linear bearing 540, so as to realize the installation and positioning of the entire mold 10 for manufacturing the injection molded inductor, and when the external force of the machine 20 acts, the second supporting plate 320 and the third supporting plate 220 move up and down relative to the linear optical axis 510, so as to realize the mold closing or demolding. When not receiving external force, the upper punch module 300 is bounced to a set position under the elastic action of the elastic member 550, and at this time, the feeding of the material can be conveniently realized. The specific working process is as follows: the upper punch module 300 and the upper die cover 110 are arranged at intervals under the elastic action of the elastic piece 550, liquid magnetic powder glue 30 is added in the groove 112 of the upper die cover 110, the coil material piece 40 is placed on the boss 213 of the middle die 210, the coil 41 is positioned in the through groove 212, the external force action of the machine table 20 is acted on the second support plate 320, the second support plate 320 drives the upper punch 310 to move towards the upper die cover 110, the external force action of the machine table 20 is acted on the third support plate 220, the third support plate 220 drives the middle die 210 to move towards the upper die cover 110, so that the die groove 111 is abutted against the boss 213, when the upper punch 310 moves into the groove 112, the liquid magnetic powder glue 30 in the groove 112 is extruded into the gate channel 113 under the external force action and is injected into a space formed by the die groove 111, the boss 213 and the lower punch 410 in the through groove 212 through the gate channel 113, the liquid magnetic powder glue 30 and the coil 40 are pressed into an injection molding inductor integrally in the space, after the pressing is finished, the lower punch 410 moves towards the upper die cover 110 in the through groove 212 to eject the injection molded inductor out of the boss 213, and the upper punch 310 and the middle die 210 are reset to finish the preparation of the integrally molded inductor.
The lower punch module 400 has various structural forms, and in a preferred embodiment, as shown in fig. 3, the lower punch module 400 further includes a base 420 and a fourth support plate 430, and the fourth support plate 430 is fixed to the base 420 by a screw connection, a snap connection, or the like, although the fixing manner between the base 420 and the fourth support plate 430 is not limited thereto, and among them:
the base 420 is fixed to the machine table 20 by means of screw connection, snap connection, etc., and certainly, the fixing manner between the base 420 and the machine table 20 is not limited thereto, the base 420 has at least one slot 421, the slot 421 is opened on the surface of the base 420 close to the fourth supporting plate 430, the slot 421 extends to a certain depth towards the inside of the base 420, and the slot 421 is arranged opposite to the lower punch 410, and the slot 421 can play a certain role in heat dissipation when the mold 10 for manufacturing the injection molding inductor is in the heating process;
the lower punch 410 is fixed to the side of the fourth support plate 430 away from the base 420 by means of screw connection, snap connection, or the like, but the fixing means between the lower punch 410 and the fourth support plate 430 is not limited thereto.
In the mold 10 for manufacturing an injection molded inductor, the lower punch module 400 is provided with the base 420 and the fourth support plate 430, so that the lower punch 410 and the machine base 20 can be installed with a simpler structure, but the lower punch module 400 is not limited to this structure, and may be provided with other structures that can meet the requirement, for example, the spacer 440 may be provided between the fourth support plate 430 and the base 420 in order to adjust the position of the lower punch 410. In a specific working process, in an initial state, the lower punch 410 is located in the through groove 212, the lower punch 410 is flush with the plate body 211 or is higher than the plate body 211, before feeding, the base 420 drives the fourth support plate 430 to move downwards, the fourth support plate 430 drives the lower punch 410 to move downwards slightly, so that the coil 40 can be placed on the boss 213, after pressing is finished, the base 420 drives the fourth support plate 430 to move upwards, the fourth support plate 430 drives the lower punch 410 to move towards the upper mold cover 110 in the through groove 212, so that the injection molding inductor is ejected out of the boss 213 to realize demolding, and preparation of the integrally molded inductor is completed.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a mould of preparation injection moulding inductance installs on the board, its characterized in that includes:
the die closing module is provided with an upper die cover arranged on the machine table, die grooves and grooves are formed in two opposite sides of the upper die cover, and a sprue channel communicated with the die grooves and the grooves is formed in the upper die cover;
the demolding module is provided with a middle mold which is movably arranged below the upper mold cover, the middle mold is provided with a plate body, the plate body is provided with through grooves and bosses which are arranged in an array mode, and the bosses are arranged around the through grooves and matched with the mold grooves;
the upper punching module is provided with an upper punch which is movably arranged above the upper die cover and matched with the groove;
the lower punching module is provided with a lower punch which is movably arranged on the machine table and matched with the through groove.
2. The mold for manufacturing an injection molded inductor according to claim 1, wherein the boss comprises two protrusions arranged at intervals, and the two protrusions are symmetrically arranged at two sides of the through groove; the die cavity comprises two concave parts and a spacing part, the concave parts are matched with the convex parts, and the spacing part corresponds to a gap between the two convex parts.
3. The mold for manufacturing an injection molded inductor according to claim 2, wherein a plurality of air exhaust recesses are formed in the board body, and the plurality of air exhaust recesses are formed on both sides of the boss and between the two protrusions.
4. The mold for manufacturing an injection molded inductor according to claim 2, wherein the gate channel is disposed at the bottom of the groove and opens at the side wall of the groove, and the gate channel and the side wall of the groove extend obliquely to the side wall of the mold cavity.
5. The mold for manufacturing an injection molded inductor according to claim 4, wherein the gate channel extends to a sidewall of the spacer, and an open end of the gate channel on the spacer is located at a middle position of the spacer.
6. The mold for manufacturing an injection molded inductor according to claim 1, wherein the number of the gate channels is plural, and the plural gate channels are symmetrically disposed on the opposite side walls of the recess.
7. The mold for manufacturing an injection molded inductor according to claim 1, wherein a first heating pipe is disposed in the upper mold cover, and the first heating pipe is located above and close to the sprue channel; and/or a second heating pipe is arranged in the middle die, and the extending direction of the second heating pipe is parallel to the arrangement direction of the bosses and is close to the bosses.
8. The mold for manufacturing an injection molding inductor according to claim 1, wherein the mold clamping module further comprises a first supporting plate, the first supporting plate is fixed at a predetermined height of the machine platform, the first supporting plate is provided with a first through hole penetrating through the thickness of the first supporting plate, and the upper mold cover is fixed to the first supporting plate and covers the first through hole.
9. The mold for manufacturing an injection molded inductor according to claim 8, further comprising at least two sets of connecting members, wherein the connecting members comprise a linear optical axis, a first linear bearing, a fixed bearing, a second linear bearing and an elastic member, and wherein:
the first linear bearing, the elastic piece, the fixed bearing and the second linear bearing are sequentially sleeved on the linear optical axis;
the upper punch is fixed on a second supporting plate, and a first accommodating hole for accommodating the first linear bearing is formed in the second supporting plate;
the first supporting plate is provided with a second accommodating hole for accommodating the fixed bearing;
the plate body is fixed on a third supporting plate, and a third containing hole used for containing the second linear bearing is formed in the third supporting plate.
10. The mold for manufacturing an injection molded inductor according to claim 1, wherein the lower punch module further comprises a base and a fourth support plate fixed to the base, wherein:
the base is fixed on the machine table and provided with at least one slot, and the opening of the slot is formed in the surface, close to the fourth supporting plate, of the base and is opposite to the lower punch;
the lower punch is fixed on one side, far away from the base, of the fourth supporting plate.
CN202022920438.5U 2020-12-08 2020-12-08 Mould for manufacturing injection molding inductor Active CN214324017U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN202022920438.5U CN214324017U (en) 2020-12-08 2020-12-08 Mould for manufacturing injection molding inductor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112519130A (en) * 2020-12-08 2021-03-19 昆山玛冀电子有限公司 Mould for manufacturing injection molding inductor
CN114628136A (en) * 2022-03-22 2022-06-14 横店集团东磁股份有限公司 Inductor forming die

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112519130A (en) * 2020-12-08 2021-03-19 昆山玛冀电子有限公司 Mould for manufacturing injection molding inductor
CN114628136A (en) * 2022-03-22 2022-06-14 横店集团东磁股份有限公司 Inductor forming die
CN114628136B (en) * 2022-03-22 2022-12-02 横店集团东磁股份有限公司 Inductor forming die

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