Magnetic core positioning jig

Abstract

The utility model discloses a magnetic core positioning jig, and belongs to the field of magnetic core coil winding. The magnetic core positioning jig comprises a workbench, a step is arranged on the workbench, a connecting plate capable of sliding is arranged on the step, a positioning column is fixed to the connecting plate, a magnetic core is in a circular ring shape, and an inner hole of the magnetic core is matched with the positioning column; a pressing plate capable of sliding is arranged at the upper end of the workbench, the sliding direction is parallel to the axial direction of the positioning column, and the pressing plate can press the magnetic core on the side face of the step so that automatic winding can be conducted through equipment in the follow-up process. In addition, after being pressed and fixed, the positioning column can be withdrawn and leave the inner hole of the magnetic core, so that interference can be avoided when the coil is wound in the later period.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of magnetic core winding, specifically relates to a magnetic core positioning fixture. BACKGROUND

[0002] Magnetic core is the important core component of inductance, capacitance and transformer, and the fixing and positioning of magnetic core is a very critical step in the manufacturing process of these electronic components. Magnetic core is usually composed of various iron oxide mixtures, such as manganese-zinc ferrite and nickel-zinc ferrite, which have different magnetic permeability, magnetic flux density and loss characteristics, and are suitable for the coils and transformers of various electronic devices.

[0003] When winding the magnetic core, the magnetic core needs to be positioned and fixed first to facilitate subsequent automatic winding by equipment. The circular ring is the most common shape of the magnetic core, and when winding the coil of the circular ring magnetic core, the copper wire needs to be wound on the ring-shaped magnetic core through the inner hole. Therefore, the conventional inner hole or outer circle positioning will interfere with the winding, and therefore a magnetic core positioning fixture is proposed. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a magnetic core positioning fixture to solve the problems in the prior art.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A magnetic core positioning fixture, comprising a workbench, a step is arranged on the workbench, a connecting plate capable of sliding is arranged on the step, a positioning column is fixed on the connecting plate, the magnetic core is in a circular ring type, and the inner hole of the magnetic core is matched with the positioning column.

[0007] The upper end of the workbench is provided with a press plate capable of sliding, and the sliding direction is parallel to the axial direction of the positioning column. The press plate can press the magnetic core on the side surface of the step, so as to facilitate subsequent automatic winding by equipment. In addition, after being pressed and fixed, the positioning column can be withdrawn and away from the inner hole of the magnetic core, so that interference can be avoided during winding the coil later.

[0008] Further, the press plate is slidably connected with the workbench, the lower end of the workbench is provided with two first fixed plates, a lead screw is rotatably connected between the two first fixed plates, and the lead screw penetrates through the press plate and is threadedly connected with the press plate.

[0009] Further, the thread angle of the lead screw is smaller than the equivalent friction angle.

[0010] Further, the side surface of the step close to the magnetic core is made of magnetic material.

[0011] Further, a gas cylinder is arranged on the step to drive the sliding of the connecting plate.

[0012] Further, the upper end of the step is provided with a stop rod assembly, the stop rod assembly comprises a supporting plate fixed on the upper end of the step, a stop rod capable of sliding and retracting is arranged on the supporting plate, the stop rod can slide to the side of the connecting plate away from the magnetic core and block the retracting of the connecting plate on the retracting route of the connecting plate.

[0013] Further, the stop rod penetrates through the supporting plate and is in sliding connection with the supporting plate, a first stop plate and a second stop plate are arranged on the stop rod, a spring is sleeved on the stop rod, and two ends of the spring are fixed with the second stop plate and the supporting plate respectively, under the elastic force of the spring, the first stop plate is tightly attached to the supporting plate, and at this time, the stop rod is located at the side of the connecting plate away from the magnetic core and blocks the retracting of the connecting plate.

[0014] Further, a jacking rod is arranged on the pressing plate, a second wedge-shaped block is fixed at the end of the jacking rod, and a first wedge-shaped block is fixed at the lower end of the second stop plate, after the magnetic core is positioned by the positioning column, with the pressing plate approaching the magnetic core, the inclined surface of the second wedge-shaped block can be in contact with the inclined surface of the first wedge-shaped block and drive the stop rod to slide away from the connecting plate, and when the pressing plate tightly presses the magnetic core on the side surface of the step, the stop rod is just away from the retracting route of the connecting plate.

[0015] The magnetic core positioning jig has the following beneficial effects:

[0016] 1. The positioning column capable of retracting is arranged in the positioning assembly on the step to cooperate with the inner hole of the magnetic core and the side surface of the step, so that the positioning of the magnetic core is realized; the pressing plate assembly is arranged on the workbench to realize the pressing and fixing of the magnetic core, so that the subsequent automatic winding by the equipment is facilitated; in addition, after the pressing and fixing, the positioning column can be retracted and away from the inner hole of the magnetic core, so that interference during the winding of the coil in the later period can be avoided.

[0017] 2. The stop rod assembly is arranged at the upper end of the step to prevent the retracting of the connecting plate, and the jacking rod is arranged on the pressing plate to drive the movement of the stop rod, so that the movement time and state of the stop rod are controlled, and the positioning column is prevented from retracting away from the magnetic core before the pressing plate acts on the magnetic core, so that the deviation of the final positioning position of the magnetic core is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0019] Figure 1 It is a whole structure schematic view of the magnetic core positioning jig of the present application.

[0020] Figure 2 It is a workbench structure schematic view of the present application.

[0021] Figure 3 is the positioning assembly structure schematic view of the utility model;

[0022] Figure 4 is the compression assembly structure schematic view of the utility model;

[0023] Figure 5 is the blocking rod assembly structure schematic view of the utility model;

[0024] Figure 6 is the ejector rod structure schematic view of the utility model. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] As shown in Figure 1 and Figure 2 , a magnetic core positioning jig is used for positioning and fixing the magnetic core, and the magnetic core is in the shape of a circular ring. The positioning jig comprises a workbench 1, the upper end of the workbench 1 is provided with a step 11, the upper end of the step 11 is provided with a positioning assembly 2, which is used for cooperating with the inner circle of the magnetic core to center the magnetic core, and the end face of the magnetic core is attached to the side face of the step 11 to realize the positioning of the magnetic core. The workbench 1 is also provided with a compression assembly 3, which can compress the positioned magnetic core to the side face of the step 11 to realize the positioning and fixing.

[0027] In the embodiment, in order to ensure that the positioned magnetic core does not shift axially or even disengage from the positioning before the compression assembly 3 acts on the magnetic core, the side face of the step 11 close to the magnetic core is made of a magnetic material, such as a magnet.

[0028] As shown in Figure 3 , the positioning assembly 2 comprises a gas cylinder 21 fixed to the upper end of the step 11, the driving shaft of the gas cylinder 21 is fixed with a connecting plate 22 at the end, the side of the connecting plate 22 opposite to the gas cylinder 21 is fixed with a positioning column 23. Under the driving of the gas cylinder 21, the positioning column 21 can extend out of the side face of the step 11, so as to cooperate with the inner hole of the magnetic core to center the magnetic core, and cooperate with the side face of the step 11 to realize the positioning of the magnetic core.

[0029] In addition, after the compression assembly 3 compresses and fixes the positioned magnetic core, the connecting plate 22 can be controlled to retreat, so that the positioning column 21 leaves the inner hole of the magnetic core, thereby avoiding the interference when winding the coil later.

[0030] Of course, the driving mode of the sliding connection plate 22 includes but is not limited to the cylinder 21 in the embodiment, and in some embodiments, the linear driving components such as hydraulic cylinders and telescopic rods can be arranged on the upper end of the step 11 to directly drive the sliding of the connection plate 22, so as to realize the extension and retraction of the positioning column 21.

[0031] As shown in Figure 4 The pressing assembly 3 includes a slideable pressing plate 31, and the sliding direction is parallel to the axial direction of the positioning column 23, and the pressing plate 31 can press the magnetic core on the side surface of the step 11.

[0032] In the embodiment, the pressing plate 31 is slidably connected with the workbench 1, and the lower end of the pressing plate 31 penetrates the workbench 1 and extends below the workbench 1; the lower end of the workbench 1 is fixedly connected with two first fixed plates 32, the two first fixed plates 32 are rotatably connected with a lead screw 33, the lead screw 33 penetrates the lower end of the pressing plate 31 and is threadedly connected with the lower end of the pressing plate 31, and by rotating the lead screw 33, the sliding driving of the pressing plate 31 can be realized, so that the pressing plate 31 presses the magnetic core on the side surface of the step 11.

[0033] In addition, in order to ensure the stability of the pressing of the magnetic core by the pressing plate 31, the lead screw 33 needs to have self-locking property, that is, the thread angle of the lead screw 33 is smaller than the equivalent friction angle.

[0034] Of course, the driving mode of the sliding connection plate 22 includes but is not limited to the cylinder 21 in the embodiment, and in some embodiments, the linear driving components such as hydraulic cylinders and telescopic rods can be arranged on the upper end of the step 11 to directly drive the sliding of the connection plate 22, so as to realize the extension and retraction of the positioning column 21.

[0035] The upper end of the step 11 is provided with a stop rod assembly 4, which is used to prevent the retraction of the connection plate 22, so as to prevent the positioning column 21 from retracting away from the magnetic core before the pressing plate 31 acts on the magnetic core, thereby preventing the deviation of the final positioning position of the magnetic core.

[0036] As shown in Figure 5 The stop rod assembly 4 includes a support plate 41 fixed on the upper end of the step 11, the support plate 41 is provided with a stop rod 72, the stop rod 42 penetrates the support plate 41 and is slidably connected with the support plate 41, the stop rod 42 is provided with a first stop plate 431 and a second stop plate 432, the stop rod 42 is sleeved with a spring 43, and the two ends of the spring 43 are fixedly connected with the second stop plate 432 and the support plate 41 respectively, under the elastic force of the spring 43, the first stop plate 431 is tightly attached to the support plate 41, at this time, the stop rod 42 is located on the side of the connection plate 22 away from the magnetic core, and blocks the retraction of the connection plate 22.

[0037] In this embodiment, after the magnetic core is pressed, in order to facilitate the retraction of the positioning post 21 to make way for the winding, a top rod 5 is provided on the pressure plate 31 to realize the retraction path of driving the stop rod 42 to retract and leave the connecting plate 22.

[0038] The lower end of the second baffle 432 is fixed with a first wedge block 44, such as Figure 6 As shown, the end of the top rod 5 is fixed with a second wedge block 51. After the magnetic core is positioned by the positioning post 23, as the pressure plate 31 moves closer to the magnetic core, the inclined surface of the second wedge block 51 can contact the inclined surface of the first wedge block 44 and drive the stop rod 42 to slide away from the connecting plate 22. When the pressure plate 31 presses the magnetic core onto the side of the step 11, the stop rod 42 just leaves the retraction path of the connecting plate 22. At this time, driven by the cylinder 21, the connecting plate 22 drives the positioning post 23 to retract and leave the magnetic core, making way for the subsequent winding.

[0039] In addition, in other embodiments, after the magnetic core is compressed, the positioning post 21 can be retracted and moved away from the magnetic core by manually pulling the stop bar 42 back and away from the retraction path of the connecting plate 22.

[0040] Working principle:

[0041] A positioning component 2 is installed on step 11, with a retractable positioning post 23 that engages with the inner hole of the magnetic core and the side of step 11 to position the magnetic core. A pressure plate component 3 is installed on the worktable 1 to press and fix the magnetic core, facilitating subsequent automatic winding. After pressing and fixing, the positioning post 21 can retract and leave the inner hole of the magnetic core, thus avoiding interference during later winding. A stop rod component 4 is installed at the upper end of step 11 to prevent the connecting plate 22 from retracting, and a top rod 5 is installed on pressure plate 31 to trigger the movement of stop rod 42. This controls the timing and state of the stop rod 42's movement, preventing the positioning post 21 from retracting away from the magnetic core before pressure plate 31 acts on it, thus avoiding deviation in the final positioning position of the magnetic core.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A magnetic core positioning jig comprising a worktable (1), characterized in that, The workbench (1) is provided with a step (11), the step (11) is provided with a connecting plate (22) capable of sliding, the connecting plate (22) is fixed with a positioning column (23), the magnetic core is a circular ring type, and the inner hole of the magnetic core is matched with the positioning column (23); The upper end of the workbench (1) is provided with a press plate (31) capable of sliding, and the sliding direction is parallel to the axial direction of the positioning column (23), and the press plate (31) can press the magnetic core on the side surface of the step (11).

2. The magnetic core positioning fixture of claim 1, wherein The press plate (31) is in sliding connection with the workbench (1), the lower end of the workbench (1) is provided with two first fixing plates (32), the two first fixing plates (32) are rotatably connected with a lead screw (33), and the lead screw (33) penetrates through the press plate (31) and is in threaded connection with the press plate (31).

3. The magnetic core positioning fixture of claim 2, wherein, The thread angle of the lead screw (33) is smaller than the equivalent friction angle.

4. The magnetic core positioning fixture of claim 1, wherein, The side surface of the step (11) close to the magnetic core is made of a magnetic material.

5. The magnetic core positioning fixture of claim 1, wherein, The step (11) is provided with an air cylinder (21) to drive the connecting plate (22) to slide.

6. The magnetic core positioning fixture of claim 1, wherein, The upper end of the step (11) is provided with a stop rod assembly (4), the stop rod assembly (4) comprises a support plate (41) fixed on the upper end of the step (11), the support plate (41) is provided with a stop rod (42) capable of sliding and stretching out and drawing back, the stop rod (42) can slide to the side of the connecting plate (22) away from the magnetic core and block the connecting plate (22) from retracting.

7. The magnetic core positioning fixture of claim 6, wherein, The stop rod (42) penetrates through the support plate (41) and is in sliding connection with the support plate (41), the stop rod (42) is provided with a first stop plate (431) and a second stop plate (432), the stop rod (42) is provided with a spring (43), the two ends of the spring (43) are fixed with the second stop plate (432) and the support plate (41) respectively, under the elastic force of the spring (43), the first stop plate (431) is tightly attached to the support plate (41), at this time, the stop rod (42) is located at the side of the connecting plate (22) away from the magnetic core, and the stop rod (42) blocks the connecting plate (22) from retracting.

8. The magnetic core positioning fixture of claim 7, wherein, The press plate (31) is provided with a top rod (5), the end of the top rod (5) is fixed with a second wedge block (51), the lower end of the second stop plate (432) is fixed with a first wedge block (44), after the magnetic core is positioned by the positioning column (23), with the press plate (31) approaching the magnetic core, the inclined surface of the second wedge block (51) can be in contact with the inclined surface of the first wedge block (44), and the stop rod (42) is driven to slide away from the connecting plate (22); when the press plate (31) presses the magnetic core on the side surface of the step (11), the stop rod (42) just leaves the retracting route of the connecting plate (22).

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