A servo-driven skeleton voice coil stretching machine

Abstract

The present invention discloses a servo-driven skeleton voice coil stretching machine, which includes a working platform. A fixed stretching table and a movable stretching table are provided on the working platform. A fixed mold bottom plate is provided on the fixed stretching table, and a movable mold bottom plate is provided on the movable stretching table. The advantages of the present invention are that a servo motor is used to control the stretching of the voice coil. The servo motor cooperating with the lead screw can achieve fast and accurate movement, improve the accuracy and efficiency of stretching the voice coil, and can stretch skeleton voice coils of various shapes and sizes. Before stretching, a cylinder is used to drive a fixed rod to clamp the voice coil to be processed, preventing the voice coil from sliding up and down during stretching and improving the accuracy.

Description

Technical Field

[0001] The present invention relates to the field of machinery, and particularly to a servo-driven skeleton voice coil stretching machine. Background Art

[0002] The voice coil and the diaphragm are two important components in various acoustic devices such as speakers and microphones. These two components are usually separate. During production, first, an enameled wire is wound to make a cylindrical voice coil, and then the voice coil is adhesively fixed to a pre-made diaphragm. The traditional coil is stretched manually by hand. When different-shaped coils need to be stretched, different-shaped coil modules must be relied on for shaping, resulting in slow stretching speed, low efficiency, and poor shaping effect, which cannot meet the requirements of batch production by enterprises. Summary of the Invention

[0003] Based on the technical problems existing in the background art, the present invention proposes a servo-driven skeleton voice coil stretching machine.

[0004] A servo-driven skeleton voice coil stretching machine includes a working platform. On the working platform, there are a fixed stretching table and a moving stretching table. The fixed stretching table is fixed in a positioning groove on the working platform through positioning bolts. A fixed die bottom plate is provided on the fixed stretching table, and the fixed die bottom plate is arranged on the stretching side of the fixed stretching table. A fixed stretching die is provided on the fixed die bottom plate. The inner side of the fixed stretching die is a rounded rectangle, and the outer side is a vertical plane. The outer side of the fixed stretching die is retracted 2 mm inward compared to the outer side of the fixed die bottom plate. A fixed cylinder is provided at the rear of the fixed stretching die. A push rod of the fixed cylinder is connected with a baffle. A fixing rod is connected and fixed to the baffle through a positioning clamp. The fixing rod is aligned with the fixed stretching die and a fixing block is provided at the end of the fixing rod. A voice coil groove is opened in the middle of the fixing block. The moving stretching table is arranged on a sliding track. A moving die bottom plate is provided on the moving stretching table, and the moving die bottom plate is arranged on the stretching side of the moving stretching table. A moving stretching die is provided on the moving die bottom plate. The inner side of the moving stretching die is a rounded rectangle, and the outer side is a vertical plane. The outer side of the moving stretching die is retracted 2 mm inward compared to the outer side of the moving die bottom plate. A moving cylinder is provided at the rear of the moving stretching die. A push rod of the moving cylinder is connected with a baffle. A fixing rod is connected and fixed to the baffle through a positioning clamp. The fixing rod is aligned with the fixed stretching die and a fixing block is provided at the end of the fixing rod. A voice coil groove is opened in the middle of the fixing block. A lead screw seat is provided below the moving die bottom plate. A servo motor is provided at the end of the sliding track. The servo motor and the lead screw seat are connected through a ball screw. The servo motor is electrically connected to a control cabinet. The fixed cylinder and the moving cylinder are connected to an air pump, and the air pump is connected to the control cabinet.

[0005] Preferably, static eliminator blocks are provided on the upper parts of the fixed stretching die and the moving stretching die.

[0006] Preferably, an infrared distance meter is provided on the moving die bottom plate, and the infrared distance meter is directed at the fixed die bottom plate.

[0007] Preferably, the servo motor and the ball screw are connected through a coupling.

[0008] Preferably, the fixed cylinder and the moving cylinder are connected with manual switches.

[0009] The advantages of the present invention are that a servo motor is used to control the stretching voice coil. The servo motor and the lead screw can achieve fast and accurate movement, improve the precision and efficiency of the stretching voice coil, and can stretch out skeleton voice coils of various shapes and sizes. Before stretching, the cylinder drives the fixed rod to clamp the voice coil to be processed, preventing the voice coil from sliding up and down during stretching and improving the precision. The infrared rangefinder can assist in measuring the stretching distance, and cooperating with the control cabinet can improve the precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present invention;

[0011] Figure 2 is an enlarged view of the stretching position of the present invention;

[0012] Figure 3 is a schematic structural diagram of the voice coil fixing structure of the present invention;

[0013] Figure 4 is a schematic cross-sectional view of the moving stretching table of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The present invention will be further described below in conjunction with specific embodiments.

[0015] Refer to Figures 1-4, A servo-driven skeleton voice coil stretching machine, comprising a working platform 1, on which a fixed stretching table 2 and a moving stretching table 3 are provided. The fixed stretching table 2 is fixed in a positioning groove 5 on the working platform 1 through positioning bolts 4. A fixed mold bottom plate 6 is provided on the fixed stretching table 2, and the fixed mold bottom plate 6 is arranged on the stretching side of the fixed stretching table 2. A fixed stretching mold 7 is provided on the fixed mold bottom plate 6. The inner side of the fixed stretching mold 7 is a rounded rectangle, and the outer side is a vertical plane. The outer side of the fixed stretching mold 7 is retracted 2 mm inward compared to the outer side of the fixed mold bottom plate 6. A fixed cylinder 8 is provided at the rear of the fixed stretching mold 7. A baffle 9 is connected to the push rod of the fixed cylinder 8. A fixing rod 11 is connected and fixed to the baffle 9 through a positioning clip 10. The fixing rod 11 is aligned with the fixed stretching mold 7 and a fixing block 12 is provided at the end of the fixing rod 11. A voice coil groove 13 is opened in the middle of the fixing block 12. The moving stretching table 3 is arranged on a sliding track 14. A moving mold bottom plate 15 is provided on the moving stretching table 3, and the moving mold bottom plate 15 is arranged on the stretching side of the moving stretching table 3. A moving stretching mold 16 is provided on the moving mold bottom plate 15. The inner side of the moving stretching mold 16 is a rounded rectangle, and the outer side is a vertical plane. The outer side of the moving stretching mold 16 is retracted 2 mm inward compared to the outer side of the moving mold bottom plate 15. Electrostatic eliminator blocks 22 are provided above the fixed stretching mold 7 and the moving stretching mold 16, which can remove static electricity during the stretching process. A moving cylinder 17 is provided at the rear of the moving stretching mold 16. A baffle 9 is connected to the push rod of the moving cylinder 17. A fixing rod 11 is connected and fixed to the baffle 9 through a positioning clip 10. The fixing rod 11 is aligned with the fixed stretching mold 7 and a fixing block 12 is provided at the end of the fixing rod 11. A voice coil groove 13 is opened in the middle of the fixing block 12. A lead screw seat 18 is provided below the moving mold bottom plate 15. A servo motor 19 is provided at the end of the sliding track 14. The servo motor 19 and a ball screw 20 are connected through a coupling. The servo motor 19 and the lead screw seat 18 are connected through the ball screw 20. The servo motor 19 is electrically connected to a control cabinet. The fixed cylinder 8 and the moving cylinder 17 are connected to an air pump 21, and the air pump 21 is connected to the control cabinet. An infrared distance measuring instrument 23 is provided on the moving mold bottom plate 15, and the infrared distance measuring instrument 23 faces the fixed mold bottom plate 6. The fixed cylinder 8 and the moving cylinder 17 are connected to a manual switch.

[0016] When the present invention is in use, first control the moving mold bottom plate to approach the fixed mold bottom plate, so that the moving stretching mold approaches the fixed stretching mold. Put the voice coil to be stretched onto the moving stretching mold and the fixed stretching mold, and use the cylinder to push the fixing rod to fix it. Then, control the moving stretching mold to move outward by the servo motor until the finished product of the skeleton voice coil is obtained.

[0017] The advantages of the present invention are that the servo motor is used to control the stretching of the voice coil. The servo motor and the lead screw can achieve fast and accurate movement, improving the accuracy and efficiency of stretching the voice coil. It can stretch skeleton voice coils of various shapes and sizes. Before stretching, the cylinder is used to drive the fixing rod to clamp the voice coil to be processed, preventing the voice coil from sliding up and down during stretching and improving the accuracy. The infrared distance measuring instrument can assist in measuring the stretching distance, and cooperating with the control cabinet can improve the accuracy.

[0018] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A servo-driven skeleton voice coil stretching machine, comprising a working platform (1), characterized in that, The working platform (1) is provided with a fixed stretching table (2) and a movable stretching table (3). The fixed stretching table (2) is fixed in a positioning groove (5) on the working platform (1) through positioning bolts (4). A fixed mold bottom plate (6) is provided on the fixed stretching table (2), and the fixed mold bottom plate (6) is arranged on the stretching side of the fixed stretching table (2). A fixed stretching mold (7) is provided on the fixed mold bottom plate (6). The inner side of the fixed stretching mold (7) is a rounded rectangle, and the outer side is a vertical plane. The outer side of the fixed stretching mold (7) is retracted 2 mm inward compared to the outer side of the fixed mold bottom plate (6). A fixed air cylinder (8) is provided at the rear of the fixed stretching mold (7). A first baffle (9) is connected to the push rod of the fixed air cylinder (8). A first fixed rod (11) is connected to the first baffle (9) through a first positioning clamp (10). The first fixed rod (11) is aligned with the fixed stretching mold (7), and a first fixed block (12) is provided at the end of the first fixed rod (11). A first voice coil groove (13) is opened in the middle of the first fixed block (12). The movable stretching table (3) is arranged on a sliding track (14). A movable mold bottom plate (15) is provided on the movable stretching table (3), and the movable mold bottom plate (15) is arranged on the stretching side of the movable stretching table (3). A movable stretching mold (16) is provided on the movable mold bottom plate (15). The inner side of the movable stretching mold (16) is a rounded rectangle, and the outer side is a vertical plane. The outer side of the movable stretching mold (16) is retracted 2 mm inward compared to the outer side of the movable mold bottom plate (15). A movable air cylinder (17) is provided at the rear of the movable stretching mold (16). A second baffle is connected to the push rod of the movable air cylinder (17). A second fixed rod is connected to the second baffle through a second positioning clamp. The second fixed rod is aligned with the movable stretching mold (16), and a second fixed block is provided at the end of the second fixed rod. A second voice coil groove is opened in the middle of the second fixed block. A lead screw seat (18) is provided below the movable mold bottom plate (15). A servo motor (19) is provided at the end of the sliding track (14). The servo motor (19) and the lead screw seat (18) are connected through a ball screw (20). The servo motor (19) is electrically connected to a control cabinet. The fixed air cylinder (8) and the movable air cylinder (17) are connected to an air pump (21), and the air pump (21) is connected to the control cabinet; An electrostatic eliminator block (22) is provided above the fixed stretching mold (7) and the movable stretching mold (16); An infrared rangefinder (23) is provided on the movable mold bottom plate (15), and the infrared rangefinder (23) faces the fixed mold bottom plate (6).

2. A servo-driven skeleton voice coil stretching machine according to claim 1, characterized in that, The servo motor (19) and the ball screw (20) are connected through a coupling.

3. A servo-driven skeleton voice coil stretching machine according to claim 1, characterized in that, The fixed air cylinder (8) and the movable air cylinder (17) are connected to a manual switch.

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