A winding mechanism for a meter movement

Abstract

The utility model discloses a kind of instrument movement coil winding wire direction-changing winding mechanisms, including machine table, winding unit, wire arranging unit and driving unit are provided on the machine table, the winding unit is used to fix movement core column, the wire arranging unit is used to fix coil winding drum, the driving unit drives movement core column rotation simultaneously drives coil winding drum along movement core column axial movement, coil on coil winding drum is wound on fixed movement core column, the driving unit is adapted for the speed regulating unit for adjusting movement core column rotating speed and coil winding drum moving speed ratio. The utility model realizes the adjustment of the ratio of movement core column rotating speed and coil winding drum axial movement speed (i.e. wire arranging pitch) by speed regulating unit. So that mechanism can adapt to any non-standard wire diameter enameled wire, operator only needs to move switching rod to control the density of coil, effectively relieve the pressure of manual adjustment wire arranging movement, simultaneously improve the consistency of electromagnetic performance after instrument maintenance.

Description

Technical Field

[0001] This utility model relates to the field of instrument manufacturing equipment technology, specifically to an instrument core coil winding mechanism with a reversible winding direction. Background Technology

[0002] Precision winding of instrument coils is one of the core processes in precision instrument manufacturing and repair, directly affecting the instrument's electromagnetic performance (such as sensitivity and linearity) and service life. Currently, the industry mainly uses two types of winding equipment: Fully automatic high-speed winding machines are suitable for large-scale standardized production (such as mass production of the same model of ammeter movement), but the cost of a single unit is high, and professional personnel are required to adjust parameters (such as pitch and winding direction). When instruments need to be returned for repair and the coil needs to be rewound, or when experimental production with different wire diameters and turns is carried out during the research and development stage, the high-speed and continuous production function of fully automatic equipment cannot be utilized, resulting in waste of resources.

[0003] Simple manual winding machines: These machines are widely used in repair shops due to their simple structure and low cost. However, they often lack a wire-laying mechanism (rotating winding function), relying on operators to manually control the wire-laying position. When manually moving the wire, it is necessary to maintain a constant linear motion, which can easily lead to operator fatigue over long periods of operation and make it inconvenient to adjust the wire-laying speed (i.e., wire spacing). In addition, most machines use a fixed speed ratio design with gear transmission. When it is necessary to change to enameled wire of different diameters (e.g., 0.03mm-0.3mm) or the core (e.g., 3mm-15mm), the fixed transmission ratio will cause the coil to be wound too loosely or overlapped, seriously affecting the electromagnetic performance of the instrument core.

[0004] Therefore, there is an urgent need to design a compact and flexible winding mechanism for instrument core coils to meet the needs of instrument repair workshops, laboratory prototyping, and small-batch customized production. Utility Model Content

[0005] The purpose of this utility model is to provide a winding mechanism for changing the direction of the coil winding of an instrument movement. Through a unique conical wheel speed adjustment mechanism and an adjustable wire assembly, it solves the problem that existing simple winding equipment cannot adapt to precision wiring of different wire diameters. It is particularly suitable for experimental production and maintenance of instrument movements.

[0006] The technical solution adopted by this utility model to solve the above problems is: a winding mechanism for changing the direction of an instrument core coil, including a machine base, on which a winding unit, a wiring unit, and a drive unit are provided. The winding unit is used to fix the core column of the instrument core, the wiring unit is used to fix the coil drum, and the drive unit drives the core column of the instrument core to rotate while simultaneously moving the coil drum along the axial direction of the core column of the instrument core, thereby winding the coil on the coil drum onto the fixed core column of the instrument core. The drive unit is adapted with a speed regulating unit for adjusting the ratio of the rotational speed of the core column of the instrument core to the moving speed of the coil drum.

[0007] Preferably, the winding unit includes two sets of winding bases, the core column of the mechanism is rotatably disposed between the two sets of winding bases, and one set of winding bases is adapted to be equipped with a linear module that drives it to move closer to or away from the other set of winding bases.

[0008] Preferably, the wiring unit includes a wiring base, which is slidably mounted on the machine base and driven by a drive unit to move axially along the core column of the machine. The wiring base is detachably connected to a wiring frame, and two sets of coil drums are rotatably connected to the wiring frame.

[0009] Preferably, the cable tray includes a cable arm, and two sets of cable posts are provided on one side of the cable arm. The coil drum is sleeved on the cable posts, and the ends of the two sets of cable posts are limited by limiting components to prevent the coil drum from coming off the cable posts.

[0010] Preferably, the limiting component includes a C-shaped limiting arm, with two sets of bent portions symmetrically arranged at both ends of the limiting arm. The two sets of bent portions are rotatably provided with limiting nuts, and the limiting nuts are threadedly connected to the end of the cable tray post.

[0011] Preferably, the end of the cable arm is detachably connected to a guide component, which includes an L-shaped guide arm and a guide ring disposed at the end of the guide arm.

[0012] Preferably, one side of the end of the cable arm is provided with an array of screw holes, and the guide arm is provided with a long through groove and is fixed in position by two sets of locking bolts.

[0013] Preferably, the drive unit includes a drive housing, with one set of input ports and two sets of output ports respectively on both sides of the drive housing. A rocker arm is spun into the input port of the drive housing, a lead screw that is threaded into the cable base is spun into one set of output ports, and a turntable is spun into the other set of output ports. The turntable is rotatably mounted in a fixed winding base and abuts against one end of the core column of the mechanism. The rotation of the rocker arm simultaneously drives the two sets of output ports to rotate, thereby driving the core column of the mechanism to rotate and the coil drum to move axially.

[0014] Preferably, the speed regulating unit includes a transmission component and a switching component. The transmission component includes two sets of frustum-shaped transmission wheels and a transmission belt. The two sets of transmission wheels are arranged in parallel rotation within the drive housing and face opposite directions. The two ends of one set of transmission wheels are respectively connected to a rocker arm and a turntable shaft, and one end of the other set of transmission wheels is connected to a lead screw shaft. The two ends of the transmission belt are sleeved on the two sets of transmission wheels. The switching component includes a switching rod. The lower end of the switching rod is provided with a U-shaped limiting seat clamped on both sides of the transmission belt's movement track. The switching rod is slidably arranged on the drive housing and its position is fixed by a locking nut. The switching component drives the transmission belt to move along the conical surface of the two sets of frustum-shaped transmission wheels to adjust the transmission ratio.

[0015] Compared with the prior art, this utility model has the following advantages and effects: This invention utilizes a speed-regulating unit that combines a frustum-shaped transmission wheel with a transmission belt to adjust the ratio (i.e., the wire pitch) between the rotational speed of the core rod and the axial movement speed of the coil drum under a single drive source (rocker). This allows the mechanism to adapt to enameled wires of any non-standard diameter. Operators can control the coil density simply by moving a switching lever, effectively reducing the burden of manually adjusting the wire movement. It also avoids the problems of overlapping or excessive gaps caused by fixed speed ratios in traditional simple winding machines, thus improving the consistency of electromagnetic performance after instrument maintenance.

[0016] Secondly, this invention, through the design of the winding unit adapting to the linear module and the guide component adapting to the long through slot and screw hole array, endows the mechanism with extremely high versatility. The linear module can adjust the spacing of the winding base to clamp movements of different lengths, and the multi-degree-of-freedom adjustable guide arm can adapt to the optimal tangent angle of movements of different diameters, thus solving the pain point of existing equipment being unable to handle the repair and prototyping of various specifications of instrument movements.

[0017] Furthermore, this utility model, through the detachable connection of the cable tray and the C-shaped limiting arm design, not only enables the rapid replacement of different specifications of wires and improves the efficiency of auxiliary operations, but also closes the cantilevered cable tray column into a frame structure through the limiting arm, which significantly enhances the overall rigidity of the cable tray unit, effectively prevents the drum from falling off and the cable unwinding from shaking, and ensures the stability and safety of the winding process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the instrument core coil winding and reversing mechanism of this utility model.

[0019] Figure 2 This is a top view of the instrument core coil winding and reversing mechanism of this utility model.

[0020] Figure 3 This is an exploded view of the wiring unit of this utility model embodiment.

[0021] Figure 4 This is a schematic diagram of the installation of the limiting component and the cable arm of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the transmission component inside the drive housing of this utility model.

[0023] Figure 6 This is a schematic diagram of the speed control unit of this utility model.

[0024] Figure Numbers: Machine Base 10, Winding Unit 20, Winding Base 21, Linear Module 22, Core Column of the Mechanism 23, Cable Laying Unit 30, Cable Laying Base 31, Cable Laying Frame 32, Coil Drum 33, Cable Laying Arm 34, Cable Laying Column 35, Drive Unit 40, Drive Housing 41, Rocker 42, Lead Screw 43, Turntable 44, Speed ​​Adjustment Unit 50, Frustum-shaped Transmission Wheel 51, Transmission Belt 52, Switching Rod 53, U-shaped Limit Seat 54, Locking Nut 55, Limiting Component 60, C-shaped Limiting Arm 61, Bending Part 62, Limiting Nut 63, Guide Component 70, L-shaped Guide Arm 71, Guide Ring 72, Long Strip Through Slot 73, Locking Bolt 74, Screw Hole Array 75. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments. Example

[0026] See Figure 1 - Figure 6 This embodiment relates to a reversible winding mechanism for instrument movement coils, specifically used for small-batch prototyping in instrument movement production and coil rewinding during return-to-factory repair. It includes a machine base 10, on which a winding unit 20, a wiring unit 30, and a drive unit 40 are provided. The winding unit 20 is used to fix the movement core column 23, and the wiring unit 30 is used to fix the coil drum 33. The drive unit 40 drives the movement core column 23 to rotate while simultaneously causing the coil drum 33 to reciprocate along the axial direction of the movement core column 23 (achieving forward or reverse winding), winding the coil on the coil drum 33 onto the fixed movement core column 23. The drive unit 40 is equipped with a speed regulating unit 50 for adjusting the ratio of the rotational speed of the movement core column 23 to the moving speed of the coil drum 33.

[0027] Specifically, in this embodiment, the mechanism aims to solve the problem that traditional simple winding machines cannot adapt to multiple wire diameters. In implementation, the operator first installs the core post 23 to be wound onto the winding unit 20, and then installs the coil spool 33 (carrying enameled wire) onto the wire laying unit 30. Through the power input of the drive unit 40, the core post 23 is driven to rotate to wind the wire, while the wire laying unit 30 is simultaneously driven to reciprocate linearly along the axial direction of the core post 23, thus achieving the "wire laying" function. With the intervention of the speed adjustment unit 50, the operator can change the transmission ratio between the rotational and linear motion within the drive unit 40. This invention, through the aforementioned design, enables the mechanism to adapt to enameled wires of varying thicknesses: when using thicker enameled wires, adjusting the speed control unit 50 increases the movement speed of the wire laying unit 30 (i.e., increases the pitch); when using thinner enameled wires, decreasing the movement speed (i.e., decreasing the pitch) ensures that the coils are tightly arranged, without overlapping or gaps, effectively solving the problem of poor winding quality caused by a fixed speed ratio in existing technologies. Similarly, this applies to core posts 23 of different diameters: when dealing with instrument frames of different specifications, to ensure the adhesion stability of the wires on surfaces with different radii of curvature (i.e., controlling the helix angle) or to meet the gap winding requirements under specific inductance parameters, the operator can make compensatory fine adjustments to the axial movement speed through the speed control unit 50; for example, when winding large-diameter core posts, the coil density can be flexibly set according to process requirements, avoiding the loosening or slippage problems that easily occur when traditional fixed-speed mechanisms handle non-standard diameter core posts, significantly improving the equipment's versatility.

[0028] The winding unit 20 includes two sets of winding bases 21, with the core column 23 of the mechanism rotatably disposed between the two sets of winding bases 21. One set of winding bases 21 is equipped with a linear module 22 that drives it to move closer to or away from the other set of winding bases 21. In this embodiment, one set of winding bases 21 is fixedly connected to one side of the machine base 10 and houses the drive shaft inside. The bottom of the other set of winding bases 21 is connected to the linear module 22 (such as a manual lead screw slide or guide rail slider mechanism). During implementation, for different models of instrument mechanisms with varying lengths, the operator adjusts the linear module 22 to drive the winding base 21 on the movable side closer to the fixed side, thereby firmly clamping both ends of the core column 23 of the mechanism. This variable-pitch clamping method, compared to the traditional fixed chuck, significantly improves the compatibility of the mechanism with instruments of different specifications undergoing repair, avoids coaxiality deviation of the mechanism due to unstable clamping, and ensures the flatness of the winding.

[0029] See Figure 3The wiring unit 30 includes a wiring base 31, which is slidably mounted on the machine base 10 and driven by a drive unit 40 to move axially along the core column 23 of the machine. A wiring frame 32 is detachably connected to the wiring base 31, and two sets of coil drums 33 are rotatably connected to the wiring frame 32. In this embodiment, the bottom of the wiring base 31 is fitted with a guide rail or groove, forming a transmission engagement with the lead screw 43 extending from the drive unit 40. The wiring frame 32 is detachably mounted on the base using bolts or clips (in this embodiment, a miniature bench vise is used). In practical use, especially in maintenance scenarios, it may be necessary to frequently change wires of different specifications (such as copper wire, aluminum wire, or different wire diameters). The detachable design allows operators to pre-install different coil drums 33 on the spare wiring frame 32, and quickly change the entire wiring frame 32 to achieve wire replacement, thereby shortening auxiliary operation time. Simultaneously, the two sets of coil drum positions can be used for double-wire winding processes or as spare positions, improving operational efficiency.

[0030] The cable tray 32 includes a cable tray arm 34, with two sets of cable tray posts 35 on one side of the cable tray arm 34. A coil drum 33 is sleeved on the cable tray posts 35, and the ends of the two sets of cable tray posts 35 are secured by limiting components 60 to prevent the coil drum 33 from detaching from the cable tray posts 35. In this embodiment, the cable tray posts 35 are horizontally cantilevered. During installation, the center hole of the coil drum 33 is aligned with the cable tray post 35 and pushed in until the drum abuts against the side wall of the cable tray arm 34. Subsequently, the limiting components 60 are used to lock the end of the cable tray post 35. This structure effectively prevents the coil drum 33 from axially shifting or accidentally detaching during rapid cable unwinding, ensuring the stability of the cable supply, avoiding accidents such as wire breakage or knotting due to the drum detaching, and improving operational safety.

[0031] The limiting component 60 includes a C-shaped limiting arm 61, with two sets of bent portions 62 symmetrically arranged at both ends of the limiting arm. Each set of bent portions 62 is rotatably fitted with a limiting nut 63, which is threaded to the end of the cable tray 35. In this embodiment, the span of the C-shaped limiting arm 61 is designed to match the spacing between the two sets of cable trays 35. After both coil drums 33 are installed, the operator fastens the C-shaped limiting arm 61 onto the ends of the two cable trays 35 and tightens the limiting nuts 63 at both ends. This integrated limiting structure not only prevents detachment but also connects the two originally cantilevered cable trays 35 at their ends into a closed frame structure, enhancing the overall rigidity of the cable tray 32, reducing vibration during the cable release process, and helping to maintain constant cable tension.

[0032] See Figure 4The end of the wiring arm 34 is detachably connected to a guide component 70, which includes an L-shaped guide arm 71 and a guide ring 72 disposed at the end of the guide arm. In this embodiment, after the enameled wire is drawn out from the coil drum 33, it must pass through the guide ring 72 to reach the core post 23 of the mechanism. The guide ring 72 is typically made of wear-resistant ceramic or polished metal. The L-shaped guide arm 71 extends the guide point to a position close to the core post 23 of the mechanism. During implementation, the guide component 70 plays a "rectifying" role, ensuring that the enameled wire always cuts into the winding surface at a relatively perpendicular angle. This is crucial for achieving precise wiring and preventing tangled wire.

[0033] See Figure 3 The cable arm 34 has a screw hole array 75 on one side of its end, and the guide arm has an elongated through groove 73, which is fixed in position by two sets of locking bolts 74. In this embodiment, the screw hole array 75 provides multiple mounting positions at different heights or angles, while the elongated through groove 73 allows for fine adjustment of the guide arm along its direction. When dealing with movement cores 23 of different diameters, the operator can loosen the locking bolts 74 and adjust the position of the guide ring 72 up, down, forward, and backward to bring it as close as possible to the core surface and at the optimal tangential height. This multi-degree-of-freedom adjustment capability allows the mechanism to find the optimal cable exit position when handling micro or large movements, further ensuring winding accuracy when repairing diverse instruments.

[0034] See Figure 5 The drive unit 40 includes a drive housing 41. The drive housing 41 has one set of input ports and two sets of output ports on its two sides. A rocker arm 42 is axially connected to the input port of the drive housing 41. One set of output ports is axially connected to a lead screw 43 that is threaded into the cable base 31. The other set of output ports is axially connected to a turntable 44. The turntable 44 is rotatably mounted within a fixed winding base 21 and abuts against one end of the core column 23 of the winding mechanism. Rotation of the rocker arm 42 simultaneously drives the two sets of output ports to rotate, thereby rotating the core column 23 of the winding mechanism and causing the coil drum 33 to move axially. In this embodiment, the drive housing 41 is mainly used for power distribution. The operator manually cranks the rocker arm 42 (input port), and the power is split inside the housing. One path of power is directly (or after reduction) transmitted to the turntable 44, driving the winding mechanism to rotate; the other path of power is transmitted to the lead screw 43 after speed change, and the rotation of the lead screw 43 drives the cable base 31 to translate. Through a purely mechanical linkage structure, rotation and translation are rigidly connected by a mechanical mechanism. Compared with electronically controlled dual-motor systems, it has better synchronization in low-speed maintenance operations (such as slow hand-cranked inspections), and is inexpensive and easy to maintain, making it very suitable for small-batch production and maintenance workshop environments.

[0035] See Figure 6The speed regulating unit 50 includes a transmission component and a switching component. The transmission component includes two sets of frustum-shaped transmission wheels 51 and a transmission belt 52. The two sets of transmission wheels are arranged in parallel rotation within the drive housing 41 and face opposite directions. The two ends of one set of transmission wheels are respectively connected to the rocker arm 42 and the turntable 44, and one end of the other set of transmission wheels is connected to the lead screw 43. The two ends of the transmission belt 52 are sleeved on the two sets of transmission wheels. The switching component includes a switching rod 53. The lower end of the switching rod 53 is provided with a U-shaped limiting seat 54 clamped on both sides of the movement trajectory of the transmission belt 52. The switching rod 53 is slidably disposed on the drive housing 41 and fixed in position by a locking nut 55. The switching component drives the transmission belt 52 to move along the conical surface of the two sets of frustum-shaped transmission wheels 51 to adjust the transmission ratio. In this embodiment, the two sets of frustum-shaped transmission wheels 51 (i.e., conical wheels) are arranged in opposite directions to form a speed change mechanism. The driving conical wheel connected to the rocker arm 42 is responsible for inputting the rotational speed, and the driven conical wheel connected to the lead screw 43 is responsible for outputting the winding speed. The specific adjustment steps are as follows: When winding a thin wire (requiring a small pitch, i.e., the speed of the lead screw 43 is relatively slower than that of the turntable 44), loosen the locking nut 55, move the switching rod 53, and the U-shaped limit seat 54 moves the transmission belt 52 towards the small diameter end of the driving cone wheel (corresponding to the large diameter end of the driven cone wheel). At this time, the transmission ratio decreases, the speed of the lead screw 43 decreases, and the wire arrangement becomes denser. Conversely, if winding a thick wire, move the transmission belt 52 in the opposite direction, the speed of the lead screw 43 increases, and the wire arrangement becomes sparser. The speed adjustment unit 50 realizes the adjustment of the wire arrangement pitch under a single hand-cranked drive source. This breaks through the limitation of traditional gear-type reversing mechanisms that only have a few fixed speed ratios, allowing operators to perform wire arrangement matching for enameled wires of any non-standard diameter, improving the consistency of electromagnetic performance and appearance quality after instrument maintenance.

[0036] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A mechanism for reversing the winding direction of an instrument mechanism coil, characterized in that, The device includes a machine base, on which a winding unit, a wire laying unit, and a drive unit are provided. The winding unit is used to fix the core column of the mechanism, the wire laying unit is used to fix the coil drum, and the drive unit drives the core column of the mechanism to rotate while moving the coil drum along the axial direction of the core column of the mechanism, so that the coil on the coil drum is wound onto the fixed core column of the mechanism. The drive unit is equipped with a speed regulating unit for adjusting the ratio of the rotation speed of the core column of the mechanism to the speed of the coil drum.

2. The instrument mechanism coil winding and reversing mechanism according to claim 1, characterized in that: The winding unit includes two sets of winding bases, and the core column of the mechanism is rotatably disposed between the two sets of winding bases. One set of winding bases is adapted to be equipped with a linear module that drives it to move closer to or away from the other set of winding bases.

3. The instrument mechanism coil winding direction-changing winding mechanism according to claim 1, characterized in that: The wiring unit includes a wiring base, which is slidably mounted on the machine base and driven by a drive unit to move axially along the core column of the machine. It is detachably connected to a wiring frame, and two sets of coil drums are rotatably connected to the wiring frame.

4. The instrument mechanism coil winding and reversing mechanism according to claim 3, characterized in that: The cable tray includes a cable arm, and two sets of cable posts are provided on one side of the cable arm. The coil drum is sleeved on the cable post, and the ends of the two sets of cable posts are limited by limiting components to prevent the coil drum from coming off the cable post.

5. The instrument mechanism coil winding and reversing mechanism according to claim 4, characterized in that: The limiting component includes a C-shaped limiting arm, with two sets of bent portions symmetrically arranged at both ends of the limiting arm. The two sets of bent portions are rotatably equipped with limiting nuts, which are threadedly connected to the end of the cable tray post.

6. The instrument mechanism coil winding and reversing mechanism according to claim 4, characterized in that: The end of the cable arm is detachably connected to a guide component, which includes an L-shaped guide arm and a guide ring disposed at the end of the guide arm.

7. The instrument mechanism coil winding and reversing mechanism according to claim 6, characterized in that: The cable arm has an array of screw holes on one side of its end, and the guide arm has a long through groove and is fixed in position by two sets of locking bolts.

8. The instrument mechanism coil winding direction-changing winding mechanism according to claim 1, characterized in that: The drive unit includes a drive housing, with one set of input ports and two sets of output ports on each side of the drive housing. A rocker arm is spun into the input port of the drive housing, a lead screw that is threaded into the cable base is spun into one set of output ports, and a turntable is spun into the other set of output ports. The turntable is rotatably mounted in a fixed winding base and abuts against one end of the core column of the mechanism. The rotation of the rocker arm simultaneously drives the two sets of output ports to rotate, thereby causing the core column of the mechanism to rotate and the coil drum to move axially.

9. The instrument mechanism coil winding and reversing mechanism according to claim 8, characterized in that: The speed regulating unit includes a transmission component and a switching component. The transmission component includes two sets of frustum-shaped transmission wheels and a transmission belt. The two sets of transmission wheels are arranged in parallel rotation within the drive housing and face opposite directions. The two ends of one set of transmission wheels are respectively connected to a rocker arm and a turntable shaft, and one end of the other set of transmission wheels is connected to a lead screw shaft. The two ends of the transmission belt are sleeved on the two sets of transmission wheels. The switching component includes a switching rod. The lower end of the switching rod is provided with a U-shaped limiting seat clamped on both sides of the transmission belt's movement track. The switching rod is slidably mounted on the drive housing and its position is fixed by a locking nut. The switching component drives the transmission belt to move along the conical surface of the two sets of frustum-shaped transmission wheels to adjust the transmission ratio.

Images