Voice coil framework film beveling mechanism

Abstract

The utility model relates to voice coil production equipment, in particular to a voice coil framework film beveling mechanism which comprises a rack, an unwinding device, a cutting device and a winding device which are sequentially arranged on the top face of the rack from front to back to form assembly line matching, and further comprises a transferring device arranged between the cutting device and the winding device. The cutting device comprises a cutter and a cutting cylinder for driving the cutter to move up and down above the top surface of the platform, the lower edge of the cutter is provided with a cutting edge parallel to the top surface of the platform, and the length direction of the cutting edge is inclined relative to the axial direction of the driven roller; the transferring device comprises a suction nozzle with an upward suction end, a lifting air cylinder for driving the suction nozzle to ascend and descend relative to the top face of the platform, a translation air cylinder for driving the suction nozzle to translate between the cutting device and the rolling device in the front-back direction, and a driving unit for driving the suction nozzle to rotate along a vertical center shaft. According to the utility model, the production efficiency is higher, and the film raw material is greatly saved.

Description

Technical Field

[0001] The utility model relates to voice coil production equipment, in particular to a voice coil skeleton film beveling mechanism. Background Art

[0002] The voice coil is the core structure of the speaker unit that completes the conversion from electrical energy to mechanical energy. It mainly includes a wire tube as a skeleton and a coil wound on the skeleton.

[0003] In the prior art, some voice coil frames are made of film materials such as Figure 1 The cylindrical structure shown in the figure has a film joint which is a cut 1' inclined relative to the axis of the voice coil frame. Figure 2 The processing method shown is used to obtain Figure 1 The voice coil skeleton shown in the figure is firstly cut from the film strip to obtain a rectangular film 2', and then the ends of the rectangular film 2' are beveled into parallel beveled edges to obtain a beveled film 3', and finally the beveled film 3' is rolled into Figure 1 The cylindrical structure shown.

[0004] Figure 2 The processing method shown is relatively complicated and the efficiency needs to be improved. In addition, each time a voice coil frame is formed, at least two pieces of waste scraps will be generated, which is costly. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, the utility model provides a voice coil skeleton film bevel cutting mechanism, which specifically adopts the following technical solutions.

[0006] The voice coil skeleton film beveling mechanism comprises a frame, and the top surface of the frame is sequentially provided with an unwinding device, a cutting device, and a winding device which form an assembly line, from front to back, and the unwinding device is used to output the film material tape to the rear;

[0007] It also includes a transfer device arranged between the cutting device and the coiling device;

[0008] The unwinding device comprises a platform, a material unwinding shaft axially arranged in the left-right direction is provided at the front end of the platform, a notch is provided in the middle section of the platform, a driven roller and a driving roller are provided above and below the notch, respectively, the driven roller and the driving roller form a circle-pressing-circle fit on a horizontal plane flush with the top surface of the platform, and a servo motor for driving the driving roller is also provided on the outside of the platform;

[0009] The cutting device comprises a cutting knife and a cutting cylinder driving the cutting knife to move up and down above the top surface of the platform, the lower edge of the cutting knife has a cutting edge parallel to the top surface of the platform, and the length direction of the cutting edge is inclined relative to the axial direction of the driven roller;

[0010] The transfer device includes a suction nozzle with an upward suction end, a lifting cylinder for driving the suction nozzle to rise and fall relative to the top surface of the platform, a translation cylinder for driving the suction nozzle to translate back and forth between the cutting device and the coiling device in the front-back direction, and a driving unit for driving the suction nozzle to rotate along the vertical central axis;

[0011] The winding device includes a pair of brackets arranged in left and right, an opening and closing cylinder driving the bracket to open and close left and right with a suction nozzle as the center, and a stroke cylinder driving the bracket to rise and fall vertically. The upper ends of the brackets are respectively provided with guide wheels axially arranged in the left and right directions. It also includes a cage frame arranged on the rear side of the bracket, the cage frame is provided with a main shaft axially arranged in the front and back directions, a telescopic unit driving the main shaft to move forward and backward relative to the opening and closing center of the bracket, and a main shaft motor driving the main shaft to rotate. The front end of the main shaft has an air hole on the cylindrical surface, and the rear end of the main shaft has a negative pressure air nozzle leading to the air hole along the axis line. The cage frame is also provided with a cantilever located above the front end of the main shaft, and a pressing cylinder driving the cantilever to move up and down. The lower end of the cantilever is provided with a pressing wheel axially arranged in the left and right directions. After the cantilever moves downward, the pressing wheel and the cylindrical surface with air holes on the front end of the main shaft form a circle-pressing-circle fit.

[0012] In a further development, the drive unit is a rotary cylinder or a servomotor.

[0013] In a further development, the telescopic unit is a cylinder.

[0014] Compared with the prior art, the beneficial effect of the utility model is that the straight-line output film is beveled by the cutting device, so that the required beveled film is directly obtained without generating waste scraps, and then the beveled film is straightened by the transfer device and sent to the winding device to form the expected cylindrical structure, so the production efficiency is higher and the film raw materials are greatly saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a voice coil skeleton in the prior art.

[0016] Figure 2 It is a schematic diagram of the structure of the oblique cut film in the prior art.

[0017] Figure 3 It is a structural schematic diagram of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the unwinding device in the utility model.

[0019] Figure 5 It is a structural schematic diagram of the transfer device in the utility model.

[0020] Figure 6 It is a structural schematic diagram of the coiling device in the utility model. DETAILED DESCRIPTION

[0021] In one embodiment, if Figure 3 As shown, a voice coil skeleton film beveling mechanism of the utility model comprises a frame 1, and a reeling device 2, a cutting device 3, and a reeling device 4 are sequentially arranged on the top surface of the frame 1 from front to back to form an assembly line, and the reeling device 2 is used to output the film strip to the rear;

[0022] It also includes a transfer device 5 disposed between the cutting device 3 and the coiling device 4;

[0023] The unwinding device 2 comprises a platform 21, a material unwinding shaft 22 axially arranged in the left-right direction is provided at the front end of the platform 21, a notch 23 is provided in the middle section of the platform 21, a driven roller 24 and a driving roller 25 are provided above and below the notch 23, respectively, the driven roller 24 and the driving roller 25 form a circle-pressing-circle fit on a horizontal plane flush with the top surface of the platform 21, and a servo motor 26 for driving the driving roller 25 is also provided on the outside of the platform 21;

[0024] The cutting device 3 includes a cutting knife 31 and a cutting cylinder 32 for driving the cutting knife 31 to move up and down above the top surface of the platform 21. The lower edge of the cutting knife 31 has a cutting edge parallel to the top surface of the platform 21, and the length direction of the cutting edge is inclined relative to the axial direction of the driven roller 24.

[0025] The transfer device 5 includes a suction nozzle 51 with an upward suction end, a lifting cylinder 52 for driving the suction nozzle 51 to rise and fall relative to the top surface of the platform 21, a translation cylinder 53 for driving the suction nozzle 51 to translate back and forth between the cutting device 3 and the coiling device 4 in the front-back direction, and a driving unit 54 for driving the suction nozzle 51 to rotate along the vertical central axis;

[0026] The coiling device 4 includes a pair of brackets 41 arranged in left and right columns, an opening and closing cylinder 42 driving the bracket 41 to open and close left and right with the suction nozzle 51 as the center, and a stroke cylinder 421 driving the bracket to rise and fall vertically. The upper ends of the brackets 41 are respectively provided with guide wheels 43 axially arranged in the left and right directions. The coiling device 4 also includes a cage 44 arranged at the rear side of the bracket 41, and the cage 44 is provided with a main shaft 45 axially arranged in the front and back directions, a telescopic unit 46 driving the main shaft 45 to move forward and backward relative to the opening and closing center of the bracket 41, and a self-propelled cylinder 421 driving the main shaft 45 to move upward and downward. The spindle motor 47 rotates, the front end of the spindle 45 is provided with an air hole 450 on the cylindrical surface, the rear end of the spindle 45 is provided with a negative pressure air nozzle 451 leading to the air hole 450 along the axis, the cage frame 44 is also provided with a cantilever 48 located above the front end of the spindle 45, and a pressing cylinder 49 driving the cantilever 48 to move up and down, and the lower end of the cantilever 48 is provided with a pressing wheel 40 axially arranged in the left and right directions. After the cantilever 48 moves downward, the pressing wheel 40 and the cylindrical surface of the front end of the spindle 45 with the air hole 450 formed a circle-pressing-circle fit.

[0027] In the above embodiment, the unwinding shaft 22 is used to unwind the film strip. After unwinding, the film strip is introduced through the front end of the platform 21, and then passes between the driven roller 24 and the active roller 25. The driven roller 24 and the active roller 25 cooperate to form a circular-pressing-circular feeding mechanism, thereby transferring the unwound film strip to the cutting device 3 at the front end of the platform 21.

[0028] In the above embodiment, since the length direction of the cutting edge of the cutter 31 in the cutting device 3 is tilted relative to the axial direction of the driven roller 24, the beveled film obtained by the cutting device 3 is tilted relative to the conveying direction of the assembly line, which is not convenient for directly rolling into a voice coil bobbin. The moving device in the above embodiment absorbs the bottom surface of the beveled film through the suction nozzle 51, and then rotates the suction nozzle 51 to align the beveled film with respect to the conveying direction of the assembly line, and then directly transfers it to the winding device 4 to form the expected cylindrical structure.

[0029] In the above embodiment, the initial state of the bracket is set to open, and the guide wheel is lower than the top surface of the platform. The straightened beveled film is moved between the open brackets by the suction nozzle 51, and then the bracket is closed so that the suction nozzle is located between the two guide wheels, and then the suction nozzle is lowered so that the beveled film is placed flat on the two guide wheels.

[0030] In the above embodiment, for the bevel-cut film placed flat on the two guide wheels, the main shaft is first extended so that the front end of the main shaft is located above the bevel-cut film, and then the bracket is raised to make the bevel-cut film contact the cylindrical surface with air holes 450 at the front end of the main shaft 45, so that the main shaft and the guide wheels form a circle-pressed-circle fit, and then the main shaft is rotated to move the bevel-cut film until the tip of one end contacts the cylindrical surface at the end of the main shaft, and then air is sucked through the negative pressure air nozzle 451 so that the tip of the bevel-cut film is adsorbed on the front end of the main shaft 45.

[0031] In the above embodiment, for the bevel-cut film adsorbed on the front end of the main shaft, the cantilever 48 is driven to make the pressure wheel and the main shaft also form a circle-pressing-circle fit, and then the main shaft is rotated so that the bevel-cut film is wound on the main shaft to form a voice coil frame of the expected shape, and finally the voice coil frame can be taken out.

[0032] Obviously, the above implementation not only can directly obtain the required bevel-cut film without generating waste scraps, but also can quickly roll the bevel-cut film into a voice coil skeleton, so the production efficiency is higher and the film raw materials are greatly saved.

[0033] In a preferred embodiment, the driving unit 54 is a rotary cylinder or a servo motor, and the telescopic unit 46 is a cylinder. Obviously, the bevel angle of the film strip is equal to the inclination angle of the beveled film relative to the conveying direction of the assembly line. The purpose of the driving unit 54 driving the suction nozzle 51 to rotate is to eliminate the inclination angle of the beveled film relative to the conveying direction of the assembly line, so that the beveled film is straightened. Therefore, the parameters of the rotary cylinder or servo motor can be set according to actual needs. Although this embodiment is not described in detail, it will not affect the understanding and implementation of those skilled in the art.

[0034] For those skilled in the art, the protection scope of the present invention is not limited to the details of the above-mentioned exemplary embodiments. Without departing from the spirit or basic characteristics of the present invention, the equivalent meanings and all changes in the protection scope made by those skilled in the art based on the requirements of the present invention should be included in the present invention.

Claims

1. The voice coil skeleton film beveling mechanism comprises a frame, and the top surface of the frame is sequentially provided with an unwinding device, a cutting device, and a winding device which form an assembly line from front to back, and the unwinding device is used to output the film tape to the rear; It is characterized in that It also includes a transfer device arranged between the cutting device and the coiling device; The unwinding device comprises a platform, a material unwinding shaft axially arranged in the left-right direction is provided at the front end of the platform, a notch is provided in the middle section of the platform, a driven roller and a driving roller are provided above and below the notch, respectively, the driven roller and the driving roller form a circle-pressing-circle fit on a horizontal plane flush with the top surface of the platform, and a servo motor for driving the driving roller is also provided on the outside of the platform; The cutting device comprises a cutting knife and a cutting cylinder driving the cutting knife to move up and down above the top surface of the platform, the lower edge of the cutting knife has a cutting edge parallel to the top surface of the platform, and the length direction of the cutting edge is inclined relative to the axial direction of the driven roller; The transfer device includes a suction nozzle with an upward suction end, a lifting cylinder for driving the suction nozzle to rise and fall relative to the top surface of the platform, a translation cylinder for driving the suction nozzle to translate back and forth between the cutting device and the coiling device in the front-back direction, and a driving unit for driving the suction nozzle to rotate along the vertical central axis; The winding device includes a pair of brackets arranged in left and right, an opening and closing cylinder driving the bracket to open and close left and right with a suction nozzle as the center, and a stroke cylinder driving the bracket to rise and fall vertically. The upper ends of the brackets are respectively provided with guide wheels axially arranged in the left and right directions. It also includes a cage frame arranged on the rear side of the bracket, the cage frame is provided with a main shaft axially arranged in the front and back directions, a telescopic unit driving the main shaft to move forward and backward relative to the opening and closing center of the bracket, and a main shaft motor driving the main shaft to rotate. The front end of the main shaft has an air hole on the cylindrical surface, and the rear end of the main shaft has a negative pressure air nozzle leading to the air hole along the axis line. The cage frame is also provided with a cantilever located above the front end of the main shaft, a pressing cylinder driving the cantilever to move up and down, and the lower end of the cantilever is provided with a pressing wheel axially arranged in the left and right directions. After the cantilever moves downward, the pressing wheel and the cylindrical surface with air holes on the front end of the main shaft form a circle-pressing-circle fit.

2. The voice coil skeleton film beveling mechanism according to claim 1, characterized in that: The driving unit is a rotary cylinder or a servomotor.

3. The voice coil skeleton film beveling mechanism according to claim 1, characterized in that: The telescopic unit is a cylinder.

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