A coil production forming cavity groove size adjusting mechanism

Abstract

The present application relates to the technical fields of inductance processing, in particular to a forming cavity groove size adjusting mechanism for coil production, comprising an outer mold, the inner mold is slidably matched in the inner part of the outer mold, the movable mold is slidably matched in the inner part of the inner mold, the limiting assembly limiting the height of the inner mold and the movable mold is arranged at the bottom of the outer mold, and the supporting assembly is arranged at the outer side and the bottom of the outer mold. The forming cavity groove size adjusting mechanism for coil production, through the movable inner mold and the movable mold, the inner mold and the movable mold can form a small cavity, and the inner mold and the movable mold form a large cavity with the outer mold, so that the size of the cavity can be adjusted according to the production needs during production, the assembly mold does not need to be replaced, and the versatility is improved, which is convenient for switching the cavity during small-scale production, without disassembly, positioning and assembly, thereby improving the operability.

Description

Technical Field

[0001] This invention relates to the field of inductor processing technology, specifically to a molding cavity groove size adjustment mechanism for coil production. Background Technology

[0002] An integrated inductor is a high-performance surface mount inductor made by die-casting and encapsulating the winding coil as a whole using metal magnetic powder. Its core features are integrated structure, no independent magnetic core, and fully enclosed magnetic circuit. It has high mechanical strength, low electromagnetic interference (EMI), high current carrying capacity, and excellent temperature rise characteristics.

[0003] Electronic devices typically require one to three specifications of integrated inductors. In the current production process, the cavity size of the mold is fixed and single. When producing inductors of different specifications, it is necessary to change the mold of different specifications. In small-scale production, it is necessary to change to a suitable mold to meet different customer needs. The mold change requires disassembly, positioning and assembly. During the disassembly, positioning and assembly process, the equipment cannot be put into production, thus affecting the overall production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a molding cavity groove size adjustment mechanism for coil production, to solve the problem of low production efficiency caused by frequent mold changes in small-scale inductor production mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: A molding cavity groove size adjustment mechanism for coil production includes an outer mold, an inner mold slidably fitted inside the outer mold, a movable mold slidably fitted inside the inner mold, a limiting component at the bottom of the outer mold to limit the height of the inner mold and the movable mold, a support component at the outer side and bottom of the outer mold, a driving component inside the support component to drive the movable mold and the inner mold to move up and down, a support seat inside the support component to limit the lowest position of the inner mold and the movable mold, the top of the movable mold and the inner walls of the inner mold together forming a small cavity, the inner mold being driven downward by the driving component to form a large cavity with the top of the inner mold and the inner walls of the outer mold, and an integrally formed outwardly protruding baffle at the bottom of the inner mold, the baffle slidingly fitted onto the inner edge of the bottom of the outer mold.

[0005] More preferably, the limiting component includes a telescopic part disposed between the inner mold and the movable mold, used to limit the relative lifting stroke of the inner mold and the movable mold; The telescopic part includes a movable limiting member and an elastic member; the movable limiting member can slide up and down relative to the inner mold, and its upper end is provided with a limiting protrusion to limit the downward stroke of the movable mold, and its lower end is connected to the movable mold. The elastic element acts between the inner mold and the movable mold, keeping the inner mold and the movable mold in their initial relative positions. When the inner mold is driven to move downward, the movable limiting element is allowed to retract relative to the inner mold, so as to make the tops of the inner mold and the movable mold flush.

[0006] More preferably, the bottom of the inner mold has interconnected movable slots and mounting slots on both sides. Each mounting slot has a set of plug-in blocks inserted into it. Each set of plug-in blocks has a step integrally formed inside. The inner sidewall of the step forms a guide channel for the movable limiting member to pass through. The movable limiting member can slide up and down along the guide channel and restricts the downward stroke of the movable mold by closely abutting the top surface of the step with a limiting protrusion. The bottom of the movable mold is provided with an outwardly extending base plate, and the elastic element is sleeved on the outside of the movable limiting element with its upper and lower ends abutting the bottom surface of the step and the top surface of the base plate, respectively.

[0007] More preferably, the adjusting part includes a slide groove formed on the opposite side of the outer mold. Fixed seats are fixedly connected to both sides of the bottom of the outer mold. A bidirectional screw is rotatably connected inside one of the fixed seats via a bearing. A slide rod is fixedly connected inside the other fixed seat. Two movable seats are slidably fitted on the outer wall of the slide rod. The two threaded sections of the bidirectional screw are respectively connected to internal thread seats. Each adjacent internal thread seat and movable seat forms a group. A support rod is fixedly connected to the top of each group of internal thread seats and movable seats. A slider is fixedly connected to both ends of each support rod, and the slider is slidably fitted with the slide groove.

[0008] More preferably, the support assembly consists of a mold support part and a drive support part. The mold support part includes connecting ears fixedly connected to the four corners of the outer mold. The bottom of the connecting ears is fixedly connected to an outer frame by bolts. The bottom of the outer frame is fixedly connected to four support rods.

[0009] More preferably, the drive support includes a bracket that is fixedly connected to the bottom of a plurality of support rods, and a protective sleeve is fixedly connected to the bottom of the bracket.

[0010] More preferably, the driving assembly includes a driving part and a connecting part, the driving part being used to drive the connecting part to rise or fall, and the top of the connecting part being fixedly connected to the bottom of the inner mold.

[0011] More preferably, the drive unit includes a push rod motor fixedly connected inside the sheath, the bottom of the support base is provided with a clearance groove to avoid the output shaft end of the push rod motor, and a crossbar is transversely inserted at the output end of the push rod motor.

[0012] More preferably, the connecting part includes push-pull rods respectively fixedly connected to both ends of the crossbar, and the tops of the two push-pull rods are jointly fixedly connected to the bottom of the inner mold.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, the movable inner mold and the movable mold can form a small cavity, while the inner mold and the movable mold together with the outer mold form a large cavity. This allows for the adjustment of the size of the cavity according to production needs during the production process, eliminating the need to change the assembly mold and improving versatility. It also facilitates the switching of cavities in small-scale production without the need for disassembly, positioning, and assembly, thereby improving operability.

[0014] In this invention, the size of the cavity can be adjusted as needed by the limiting component, the supporting component, and the driving component, while making the structure compact. Through the cooperation of the telescopic part and the support base, when switching to the large cavity, the movable mold will move down to the top of the support base, so that the depth of the large cavity is deeper than that of the small cavity. This switching method can effectively switch the length, width and height according to the size of the inductor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the localized explosion structure of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the adjustment part of the present invention; Figure 5 This is a schematic diagram of the localized explosion structure of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the plug-in block structure of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 1 ; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 2 ; Figure 10 This is a schematic diagram of the internal mold and mounting groove structure of the present invention.

[0016] In the diagram: 1. Outer frame; 2. Inner mold; 3. Limiting protrusion; 4. Movable mold; 5. Slide groove; 6. Support seat; 7. Push-pull rod; 11. Connecting ear; 12. Outer mold; 13. Support rod; 14. Bracket; 15. Protective sleeve; 21. Baffle frame; 22. Movable groove; 23. Insert block; 24. Mounting plate; 25. Step; 26. Mounting groove; 31. Movable limiting component; 32. Elastic component; 41. Base plate; 51. Slider; 52. Support rod; 53. Bidirectional screw; 54. Slide rod; 55. Fixed seat; 56. Internal thread seat; 57. Movable seat; 61. Clearance groove; 71. Crossbar; 72. Push rod motor. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1 - Figure 10 The present invention provides a technical solution: the molding cavity groove size adjustment mechanism for coil production includes an outer mold 12, an inner mold 2 that is slidably fitted inside the outer mold 12, a movable mold 4 that is slidably fitted inside the inner mold 2, a limiting component that limits the height of the inner mold 2 and the movable mold 4 at the bottom of the outer mold 12, a support component that is provided on the outer side and bottom of the outer mold 12, a drive component that drives the movable mold 4 and the inner mold 2 to move up and down inside the support component, a support seat 6 that limits the lowest position of the inner mold 2 and the movable mold 4 inside the support component, the top of the movable mold 4 and the inner walls of the inner mold 2 together form a small cavity, the inner mold 2 is driven downward by the drive component to form a large cavity with the top of the inner mold 2 and the inner walls of the outer mold 12, and an outwardly protruding baffle 21 integrally formed at the bottom of the inner mold 2, and the baffle 21 is slidably fitted into the inner edge of the bottom of the outer mold 12; like Figure 3 and Figure 8 As shown, a groove adapted to the baffle 21 is provided on the inner edge of the bottom of the outer mold 12. The baffle 21 and the groove cooperate to limit the maximum height of the inner mold 2. When the inner mold 2 rises to the highest position, the top of the inner mold 2 and the top of the outer mold 12 are coplanar. In the initial state, the top of the movable mold 4 is lower than the top of the inner mold 2, so that the top of the movable mold 4 and the inner wall of the inner mold 2 form a small cavity. This cavity is used for pressing and forming small-sized coil inductors. When the inner mold 2 moves down to the top of the support base 6, the top of the inner mold 2 and the top of the movable mold 4 are flush and coplanar, so that the inner wall of the outer mold 12, the inner mold 2 and the movable mold 4 form a large cavity. This cavity is used for pressing and forming large-sized coil inductors.

[0019] In this embodiment, as Figure 7 , Figure 8 and Figure 10 As shown, the limiting component includes a telescopic part disposed between the inner mold 2 and the movable mold 4, which is used to limit the relative lifting stroke of the inner mold 2 and the movable mold 4. The telescopic part includes a movable limiting member 31 and an elastic member 32; the movable limiting member 31 can slide up and down relative to the inner mold 2, and its upper end is provided with a limiting protrusion 3 to limit the downward stroke of the movable mold 4, and its lower end is connected to the movable mold 4. The elastic element 32 acts between the inner mold 2 and the movable mold 4, so that the inner mold 2 and the movable mold 4 maintain their initial relative positions, and when the inner mold 2 is driven to move downward, the movable limiting element 31 is allowed to retract relative to the inner mold, so as to achieve that the tops of the inner mold 2 and the movable mold 4 are flush. In this embodiment, as Figure 7 , Figure 8 and Figure 10 As shown, movable grooves 22 and mounting grooves 26 are opened on both sides of the bottom of the inner mold 2. A set of plug-in blocks 23 are inserted into each mounting groove 26. A step 25 is integrally formed inside each set of plug-in blocks 23. The inner sidewall of the step 25 forms a guide channel for the movable limiting member 31 to pass through. The movable limiting member 31 can slide up and down along the guide channel and restrict the downward stroke of the movable mold 4 by the limiting protrusion 3 closely abutting the top surface of the step 25. The bottom of the movable mold 4 is provided with an outwardly extending base plate 41, and the elastic element 32 is sleeved on the outside of the movable limiting element 31, with its upper and lower ends respectively abutting the bottom surface of the step 25 and the top surface of the base plate 41. When installing the elastic element 32, a 10%-15% compression margin should be reserved to prevent the elastic element 32 from "locking up" and to extend the effective stroke and life. The plug-in block 23 is fixedly connected to the bottom of the retaining frame 21 by the mounting plate 24 and bolts; The semi-circular steps 25 on the two sets of plug-in blocks 23 are combined to form a complete ring structure, which restricts the movement of the limiting protrusion 3 and the movable limiting member 31 to the lowest position. The combination of the two plug-in blocks 23 is convenient for assembly. The elastic member 32 provides an upward force to the inner mold 2 and a downward force to the movable mold 4, maintaining the initial relative height between the inner mold 2 and the movable mold 4, ensuring the stability of the molding size of the small cavity, and forming a small cavity with the inner walls of the inner mold 2 and the top of the movable mold 4. When the inner mold 2 moves downward, the bottom of the base plate 41 first abuts against the top of the support base 6. The drive assembly continues to drive the inner mold 2 to move downward, and the movable limiting member 31 extends into the movable groove 22 until the bottom of the inner mold 2 also abuts against the top edge of the base plate 41. At this time, the top of the inner mold 2 and the top of the movable mold 4 are coplanar. At the same time, the inner walls of the outer mold 12, together with the tops of the inner mold 2 and the movable mold 4, form a large cavity.

[0020] In this embodiment, as Figure 2 , Figure 4 and Figure 7 As shown, the adjustment part includes a slide groove 5 opened on the opposite side of the outer mold 12. Fixed seats 55 are fixedly connected to the bottom sides of the outer mold 12 respectively. A bidirectional screw 53 is rotatably connected inside one of the fixed seats 55 through a bearing. A slide rod 54 is fixedly connected inside the other fixed seat 55. Two movable seats 57 are symmetrically slidably fitted on the outer wall of the slide rod 54. Internal thread seats 56 are symmetrically threaded on the two threaded sections of the bidirectional screw 53. Each internal thread seat 56 and the adjacent movable seat 57 form a group. A support rod 52 is fixedly connected to the top of each group of internal thread seats 56 and the adjacent movable seat 57. A slider 51 is fixedly connected to both ends of each support rod 52, and the slider 51 slides with the slide groove 5. One section of the thread on the double-ended screw 53 is left-handed, and the other section is right-handed; A knob is fixedly connected to one end of the bidirectional screw 53. By rotating the knob, the two support rods 52 are brought closer or further apart. When the support rods 52 move to the bottom of the inner mold 2, the support rods 52 provide upward support for the inner mold 2. When the two support rods 52 move away from each other, the support rods 52 move to the sides and no longer block the inner mold 2, so that the inner mold 2 can move downward. The position of the slider 51 can be observed through the gap between the outer frame 1 and the outer mold 12. By visually judging the position of the slider 51, it can be determined whether the support rod 52 has moved to the corresponding position.

[0021] In this embodiment, as Figure 1 , Figure 2 and Figure 9As shown, the support assembly consists of a mold support part and a drive support part. The mold support part includes connecting ears 11 fixedly connected to the four corners of the outer mold 12. The bottom of the connecting ears 11 is fixedly connected to the outer frame 1 by bolts. The bottom of the outer frame 1 is fixedly connected to four support rods 13. The outer frame 1 is a rectangular hollow frame, and the four sides of the bottom of the outer frame 1 are fixedly connected to the support rod 13 by bolts.

[0022] In this embodiment, as Figure 1 , Figure 2 and Figure 7 As shown, the drive support includes a bracket 14 that is fixedly connected to the bottom of a plurality of support rods 13, and a protective sleeve 15 is fixedly connected to the bottom of the bracket 14. The bottom of the support rod 13 is fixedly connected to the four ends of the cross-shaped bracket 14.

[0023] In this embodiment, as Figure 1 , Figure 2 and Figure 7 As shown, the drive assembly includes a drive part and a connecting part. The drive part is used to drive the connecting part to rise or fall, and the top of the connecting part is fixedly connected to the bottom of the inner mold 2. The drive unit is connected to the retaining frame 21 of the inner mold 2 via the connecting part, so that the inner mold 2 can be raised and lowered with the drive unit.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 7 As shown, the drive unit includes a push rod motor 72 fixedly connected inside the sheath 15. The bottom of the support base 6 is provided with a clearance groove 61 to avoid the output shaft end of the push rod motor 72. A crossbar 71 is inserted laterally through the output end of the push rod motor 72. The output end of the push rod motor 72 is provided with a transverse through hole, and the crossbar 71 passes through the transverse through hole, so that when the output end of the push rod motor 72 is raised or lowered, the crossbar 71 is raised or lowered at the same time, and the clearance groove 61 provides space for the crossbar 71 to rise or fall.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 7 As shown, the connecting part includes push-pull rods 7 that are fixedly connected to both ends of the crossbar 71, and the tops of the two push-pull rods 7 are fixedly connected to the bottom of the inner mold 2. The two ends of the crossbar 71 are connected to two vertical push-pull rods 7 by bolts.

[0026] The method of use and advantages of this invention: The working process of this coil production molding cavity groove size adjustment mechanism is as follows: When performing small-scale inductor pressing molding, the push rod motor 72 is activated, causing the output end of the push rod motor 72 to extend upwards, such as... Figure 9 As shown, the inner mold 2 and the outer mold 12 are integrated until the baffle 21 on the inner mold 2 enters the groove at the bottom inner edge of the outer mold 12. At this time, the inner mold 2 and the outer mold 12 form a whole, and the inner wall of the inner mold 2 and the top of the movable mold 4 form a small cavity. Next, rotate the bidirectional screw 53 so that the two support rods 52 move to the bottom of the inner mold 2. The support rods 52 support the bottom of the inner mold 2, which not only restricts the inner mold 2 from moving down, but also bears and disperses the downward force during the pressing process, thus preventing the inner mold 2 from being displaced due to the pressing force. When performing large-scale inductor pressing, rotate the bidirectional screw 53 to move the two support rods 52 away from the bottom of the inner mold 2, so that the inner mold 2 descends without restraint. Then start the push rod motor 72 to make the output end of the push rod motor 72 retract downward. As the output end of the push rod motor 72 retracts downward, the base plate 41 will move closer to the support seat 6 below until the bottom of the base plate 41 contacts the top of the support seat 6. Because the large-size inductor is not only longer and wider than the small-size inductor, but also thicker, the inner mold 2 will continue to move downwards with the output of the push rod motor 72 and overcome the elastic force of the elastic element 32 until the bottom of the baffle 21 on the inner mold 2 abuts against the top of the base plate 41. At this time, the top of the inner mold 2 is coplanar with the top of the movable mold 4, and this coplanarity forms a large cavity with the inner walls of the outer mold 12. Then the coil is placed and filled with magnetic powder, and then pressing is performed. At this time, the pressure during the pressing process is borne by the support seat 6.

Claims

1. A molding cavity groove size adjustment mechanism for coil production, characterized in that, The outer mold (12) is slidably fitted with an inner mold (2) inside the outer mold (12), and a movable mold (4) is slidably fitted with an inner mold (2) inside the inner mold (2). A limiting component is provided at the bottom of the outer mold (12) to limit the height of the inner mold (2) and the movable mold (4). A support component is provided on the outside and bottom of the outer mold (12). A drive component is provided inside the support component to drive the movable mold (4) and the inner mold (2) to move up and down. A support seat (6) is provided inside the support component to limit the lowest position of the inner mold (2) and the movable mold (4). The top of the movable mold (4) and the inner walls of the inner mold (2) together form a small cavity. The inner mold (2) is driven to move downward by the drive component, so that the top of the inner mold (2) and the inner walls of the outer mold (12) together form a large cavity. The bottom of the inner mold (2) has an integrally formed outwardly protruding baffle (21), and the baffle (21) slides and fits into the bottom inner edge of the outer mold (12). The limiting component includes a telescopic part disposed between the inner mold (2) and the movable mold (4) to limit the relative lifting stroke of the inner mold (2) and the movable mold (4). The telescopic part includes a movable limiting member (31) and an elastic member (32). The movable limiting member (31) can slide up and down relative to the inner mold (2). Its upper end is provided with a limiting protrusion (3) to limit the downward stroke of the movable mold (4). Its lower end is connected to the movable mold (4). The elastic member (32) acts between the inner mold (2) and the movable mold (4) to keep the inner mold (2) and the movable mold (4) in their initial relative positions. When the inner mold (2) is driven to move down, the movable limiting member (31) is allowed to retract relative to the inner mold to achieve the top of the inner mold (2) and the movable mold (4) being flush. On both sides of the bottom of the inner mold (2), there are interconnected movable grooves (22) and mounting grooves (26). Each mounting groove (26) has a set of plug-in blocks (23) inserted into it. Each set of plug-in blocks (23) has a step (25) integrally formed inside. The inner sidewall of the step (25) forms a guide channel for the movable limiting member (31) to pass through. The movable limiting member (31) can slide up and down along the guide channel and restrict the downward stroke of the movable mold (4) by closely abutting the top surface of the step (25) with the limiting protrusion (3). The bottom of the movable mold (4) is provided with an outwardly extending base plate (41), and the elastic element (32) is sleeved on the outside of the movable limiting element (31) and its upper and lower ends respectively abut against the bottom surface of the step (25) and the top surface of the base plate (41).

2. The coil production molding cavity groove size adjustment mechanism according to claim 1, characterized in that: The adjustment part includes a slide groove (5) on the opposite side of the outer mold (12). The bottom sides of the outer mold (12) are fixedly connected to fixed seats (55). One of the fixed seats (55) is rotatably connected to a double screw (53) through a bearing. The other fixed seat (55) is fixedly connected to a slide rod (54). The outer wall of the slide rod (54) has two movable seats (57) that slide in fit. The two threaded sections of the double screw (53) are respectively connected to internal thread seats (56). Each adjacent internal thread seat (56) and movable seat (57) form a group. The top of each group of internal thread seats (56) and movable seats (57) is fixedly connected to a support rod (52). Both ends of each support rod (52) are fixedly connected to a slider (51), and the slider (51) slides in fit with the slide groove (5).

3. The coil production molding cavity groove size adjustment mechanism according to claim 1, characterized in that: The support assembly consists of a mold support part and a drive support part. The mold support part includes connecting ears (11) fixedly connected to the four corners of the outer mold (12). The bottom of the connecting ears (11) is fixedly connected to the outer frame (1) by bolts. The bottom of the outer frame (1) is fixedly connected to four support rods (13).

4. The coil production molding cavity groove size adjustment mechanism according to claim 3, characterized in that: The drive support includes a bracket (14) that is fixedly connected to the bottom of a plurality of support rods (13), and a protective sleeve (15) is fixedly connected to the bottom of the bracket (14).

5. The coil production molding cavity groove size adjustment mechanism according to claim 4, characterized in that: The drive assembly includes a drive part and a connecting part. The drive part is used to drive the connecting part to rise or fall. The top of the connecting part is fixedly connected to the bottom of the inner mold (2).

6. The coil production molding cavity groove size adjustment mechanism according to claim 5, characterized in that: The drive unit includes a push rod motor (72) fixedly connected inside the sheath (15). The bottom of the support base (6) is provided with a clearance groove (61) to avoid the output shaft end of the push rod motor (72). A crossbar (71) is inserted laterally through the output end of the push rod motor (72).

7. The coil production molding cavity groove size adjustment mechanism according to claim 6, characterized in that: The connecting part includes push-pull rods (7) that are fixedly connected to both ends of the crossbar (71), and the tops of the two push-pull rods (7) are fixedly connected to the bottom of the inner mold (2).

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