Wire cutting device for earphone production

Abstract

According to the wire cutting device for earphone production, the conveyed earphone wire can be pressed and limited and then cut, and the cutting flatness is guaranteed. A wire cutting device for earphone production comprises a fixing plate and a supporting frame installed on the fixing plate, and guide frames are fixedly connected to the middle of the top of the fixing plate in a bilateral symmetry mode. The invention relates to the technical field of earphone production, in particular to a wire cutting device for earphone production. Firstly, an earphone cable extends into a left guide frame from the left side to make contact with a left material conveying wheel, a servo motor is started, the left material conveying wheel and the right material conveying wheel rotate, the left material conveying wheel rotates to drive the earphone cable to move rightwards into a right guide frame, and when the earphone cable moves to the cutting position, a telescopic rod of an electric push rod is started to drive a cutter to move downwards; in this way, the pressing plate moves downwards to press and limit the earphone cable, then the cutter cuts the pressed and limited earphone cable, the situation that cutting is affected by bending of the earphone is prevented, and therefore the cutting flatness is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of earphone production, and in particular to a wire cutting device for earphone production. Background Art

[0002] Different materials are needed in the production process of headphones, and headphone cables are needed. Due to production needs, headphone cables of different lengths need to be produced, so the headphone cables need to be cut into the required length.

[0003] A Chinese patent with publication number CN218798794U discloses a rapid wire cutting device for headphone production and processing, including a table, a frame fixedly connected to the upper end of the table, a cutting machine movably connected to the interior of the frame, two motors mounted on the upper surface of the table, each motor having an output shaft fixedly connected to a conveying roller, a disc arranged above the conveying roller, a connecting rod arranged on the side of the disc, a rotating disc arranged on the side of the connecting rod away from the disc, and the rotating disc arranged on the side of the cutting machine. Although the above patent can cut the headphone wire, the headphone wire will also be transported and moved during the cutting process, which may easily cause the headphone wire to warp and bend, affecting the smoothness of the cutting.

[0004] The present invention aims to solve the problems existing in the above patents. To this end, a wire cutting device for earphone production is proposed, which can first press and limit the earphone wire after conveying and then cut it to ensure the cutting flatness. Summary of the invention

[0005] In order to overcome the disadvantage that although the above patent can cut the headphone wire, the headphone wire will be transported and moved during the cutting process, which may easily cause the headphone wire to warp and bend, affecting the smoothness of the cutting, the present invention provides a headphone production cutting device that can press and limit the headphone wire after transportation and then cut it to ensure the smoothness of the cutting.

[0006] The present invention is achieved through the following technical approaches: A wire cutting device for earphone production comprises a fixed plate and a support frame installed on the fixed plate, a guide frame is fixedly connected to the middle of the top of the fixed plate symmetrically, a material transport component for driving the earphone line to move is arranged on the guide frame, a positioning frame is fixedly connected to the top of the fixed plate, an electric push rod is fixedly connected and penetrated in the middle of the positioning frame, a cutter is fixedly connected to the end of the telescopic rod of the electric push rod, a long strip hole matching the cutter is opened in the middle of the top of the fixed plate, pressure rods are fixedly connected to the upper part of the cutter symmetrically, and the outer bottoms of the pressure rods on the left and right sides are fixedly connected to limit plates, a clamping component is arranged on the limit plate, and the clamping component moves toward the direction of the fixed plate, thereby clamping and limiting the earphone line.

[0007] Further explanation, the clamping assembly includes a pressure plate that is slidably connected to the limit plate. The pressure plate moves toward the position of the fixed plate to clamp and limit the headphone cable. The left and right pressure plates are respectively slidably connected to the top of the left and right guide frames. Two springs A are connected between the upper part of the pressure plate and the top of the limit plate.

[0008] Further explanation, the material transport assembly includes a material transport wheel rotatably connected to the front and rear sides of the guide frame, a worm gear is fixedly mounted on the lower part of the material transport wheel along the circumferential direction, a worm gear meshing with the worm gear is rotatably connected to the left side of the bottom of the fixed plate, a servo motor is fixedly connected to the front side of the bottom of the fixed plate, and the output shaft of the servo motor and the worm gears on both sides are driven by a synchronous belt assembly.

[0009] Further description includes a positioning component arranged on the fixed plate, the positioning component is used to center the headphone cable, the positioning component includes a limit rod slidably connected to the front and rear sides of the middle of the fixed plate, the limit rod is L-shaped, and a spring B is connected between the inner side of the limit rod and the inner side of the fixed plate, three vertical rods are fixed on the left and right sides of the bottom of the fixed plate, and a positioning rod for driving the limit rod to move inward is slidably set between the three vertical rods on the same side, the positioning rod is in contact with the limit rod, and a spring C is connected between the bottom of the positioning rod and the lower part of the vertical rod, a lifting frame is fixed between the rear ends of the left and right positioning rods, a U-shaped rod is fixed to the rear side of the bottom of the cutter, the U-shaped rod slides through the rear side of the fixed plate, the U-shaped rod slides through the lifting frame, and tension springs are symmetrically connected between the bottom of the U-shaped rod and the bottom of the lifting frame.

[0010] To further explain, the middle of the positioning rod is inclined toward the fixing plate, and the inclined position of the positioning rod is in contact with the limiting rod.

[0011] Further description includes a tensioning assembly arranged on the pressure plate, the tensioning assembly is used to pull and tighten the headphone cable, the tensioning assembly includes a guide rod fixedly connected to the top of the pressure plates on both sides, a tensioning block for tightening the headphone cable is slidably mounted on the guide rod, a reset spring is connected between the upper part of the outer side of the tensioning block and the outer side of the guide rod, guide rods are fixedly connected to the top of the tensioning blocks on the left and right sides, the upper part of the guide rod is an inclined surface, and the outer sides of the bottom of the left and right limit plates are rotatably connected to positioning wheels in contact with the guide rods, and the positioning wheels move toward the direction of the fixed plate, thereby driving the guide rods to move outward.

[0012] Further description, it also includes a stripping plate and a fixing frame, the fixing frame is fixedly connected to the right side of the fixing plate, the stripping plate for guiding the headphone wire is fixedly connected to the fixing frame, and the stripping plate is set at an angle.

[0013] Further description, it also includes a brush tube, and the left inner side of the left guide frame is fixedly connected with the brush tube along the circumferential direction for removing impurities attached to the earphone wire.

[0014] Further description, it also includes a guide cover, and the left part of the outer side of the left guide frame is fixedly connected with the guide cover for guiding the headphone wire.

[0015] To further explain, the left side of the guide cover is inclined toward the center of the circle.

[0016] The present invention has significant improvements in that: 1. First, extend the earphone cable from the left side into the left guide frame and contact it with the left transport wheel. Start the servo motor to rotate the left and right transport wheels. The left transport wheel rotates to drive the earphone cable to move to the right into the right guide frame. When the earphone cable moves to the cutting position, start the telescopic rod of the electric push rod to drive the cutter to move downward, which makes the pressure plate move downward to press the earphone cable to limit the position first, and then the cutter cuts the earphone cable after pressing and limiting the position to prevent the earphone from bending and affecting the cutting, thereby ensuring the flatness of the cutting.

[0017] 2. Under the action of the limit rod, whenever the cutter starts to move downward, the limit rod moves to center the headphone cable first, and then the headphone cable is cut by the cutter after centering, which can prevent the headphone cable from bending and deviating, causing cutting deviation, thereby improving the cutting accuracy.

[0018] 3. Under the action of the tension block, whenever the pressure plate presses the headphone wire to a limit position, the tension block can pull the headphone wire tight, which can prevent the headphone wire from being loose and affecting the cutting, thereby improving the cutting effect of the headphone wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic three-dimensional structural diagram of an embodiment of a wire cutting device for earphone production.

[0020] Figure 2 A schematic diagram of the three-dimensional structure of a pressing plate in one embodiment of a wire cutting device for earphone production.

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of a material transport wheel in one embodiment of a wire cutting device for earphone production.

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of a limit rod in one embodiment of a wire cutting device for earphone production.

[0023] Figure 5 A schematic diagram of the three-dimensional structure of a positioning rod in one embodiment of a wire cutting device for earphone production.

[0024] Figure 6 A schematic diagram of the three-dimensional structure of a lifting frame in one embodiment of a wire cutting device for earphone production.

[0025] Figure 7 A schematic diagram of the three-dimensional structure of a tensioning block in one embodiment of a wire cutting device for earphone production.

[0026] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of a discharge plate and a brush tube in one embodiment of a wire cutting device for earphone production.

[0027] Among them, the above-mentioned drawings include the following drawing marks: 1. fixed plate, 2. support frame, 3. positioning frame, 4. cutter, 5. electric push rod, 6. guide frame, 7. pressure plate, 8. pressure rod, 9. limit plate, 91. spring A, 10. transport wheel, 101. worm, 102. worm wheel, 103. servo motor, 11. limit rod, 111. spring B, 112. positioning rod, 113. spring C, 114. lifting frame, 115. tension spring, 116. U-shaped rod, 117. vertical rod, 12. positioning wheel, 121. guide rod, 122. guide rod, 123. reset spring, 124. tension block, 13. unloading plate, 14. fixed frame, 15. brush tube, 16. guide cover. DETAILED DESCRIPTION

[0028] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position. Example 1

[0029] A cutting device for earphone production includes a fixing plate 1, a supporting frame 2, a positioning frame 3, a cutting knife 4, an electric push rod 5, a guide frame 6, a pressing plate 7, a pressing rod 8, a limiting plate 9, a spring A91, a material transport wheel 10, a worm 101, a worm wheel 102 and a servo motor 103, see Figure 1-Figure 3As shown, a support frame 2 is symmetrically fixed to the front and back bottom of the fixed plate 1, a guide frame 6 is symmetrically fixed to the left and right middle of the top of the fixed plate 1, and a material transport wheel 10 is rotatably connected to the front and back sides of the guide frame 6. When the material transport wheel 10 rotates, the material transport wheel 10 can drive the headphone cable to move. A worm gear 102 is fixedly sleeved on the lower part of the material transport wheel 10 along the circumferential direction, and a worm 101 meshing with the worm gear 102 is rotatably connected to the left side of the bottom of the fixed plate 1. A servo motor 103 is installed on the front side of the bottom of the fixed plate 1 by bolt connection. The output shaft of the servo motor 103 and the front sides of the worm gears 101 on the left and right sides are driven by a synchronous belt assembly. A positioning frame 3 is fixed between the front and back sides of the top of the fixed plate 1. An electric push rod 5 is fixedly connected to the middle part of the positioning frame 3, and a cutter 4 is fixedly connected to the end of the telescopic rod of the electric push rod 5. A long strip hole matching the cutter 4 is opened in the middle of the top of the fixed plate 1. A pressure rod 8 is symmetrically fixed to the upper part of the cutter 4. The outer bottoms of the left and right pressure rods 8 are fixed to limiting plates 9. The left and right limiting plates 9 are slidably connected with a pressure plate 7. The inner side of the pressure plate 7 is an arc that matches the outer side of the headphone wire. The left and right pressure plates 7 are respectively slidably connected to the top of the left and right guide frames 6. When the pressure plate 7 moves toward the direction of the fixed plate 1, the pressure plate 7 can press the headphone wire to limit it. Two springs A91 are connected between the upper parts of the left and right pressure plates 7 and the tops of the left and right limiting plates 9 respectively.

[0030] First, place the collecting container at the lower right side of the fixing plate 1, and then extend the earphone wire from the left side into the inner side of the left guide frame 6, so that the earphone wire contacts the left transport wheel 10, and then start the servo motor 103 to drive the worm 101 to rotate through the synchronous belt assembly, and the rotation of the worm 101 drives the worm wheel 102 to rotate, which also drives the front and rear transport wheels 10 to rotate towards each other, and the front and rear transport wheels 10 on the left rotate towards each other to drive the earphone wire to move to the right, and the earphone wire moves to the right into the right guide frame 6, and the earphone wire contacts the front and rear transport wheels 10 on the right, and the front and rear transport wheels 10 on the right rotate towards each other The headphone wire is driven to move to the right. When the headphone wire moves to the right to the required cutting length, the servo motor 103 is turned off, the worm 101 stops the rotation of the worm wheel 102, the material transport wheel 10 also stops rotating, the headphone wire stops moving to the right, and then the telescopic rod of the electric push rod 5 is started to extend to drive the cutter 4 to move downward. The downward movement of the cutter 4 drives the pressure rod 8 to move downward. The downward movement of the pressure rod 8 drives the limit plate 9 to move downward. The limit plate 9 moves downward and drives the pressure plate 7 to move downward through the spring A91. The pressure plate 7 moves downward to press the headphone wire to limit the position. The pressure plate 7 stops moving downward, and the limit plate 9 continues to move downward. Continue to move downward to stretch the spring A91. Since the inner side of the pressure plate 7 is an arc that matches the outer side of the earphone line, it can fit closely with the outer side of the earphone line to press and limit. At this time, the cutter 4 continues to move downward to cut the earphone line smoothly after pressing and limiting. When the cutter 4 moves downward to the slotted hole of the fixing plate 1, the smooth cutting of the earphone line is completed. The telescopic rod of the electric push rod 5 is shortened to drive the cutter 4 to move upward and reset. The reset of the cutter 4 drives the pressure rod 8 to move upward and reset. The pressure rod 8 drives the limit plate 9 to move upward and reset. The limit plate 9 moves upward and resets first, so that the spring A 91 contracts and resets, and then the limit plate 9 drives the pressure plate 7 to move upward and reset through the spring A91. The pressure plate 7 moves upward and resets to loosen the headphone wire, and the servo motor 103 is started again to rotate. The right material transport wheel 10 rotates to drive the cut headphone wire to move to the right outside the guide frame 6, and the cut headphone wire falls into the collection container. At the same time, the left material transport wheel 10 continues to drive the remaining headphone wire to move to the right. When the headphone wire moves to the right to the cutting position, the servo motor 103 is turned off, and the headphone wire stops moving to the right. According to the above operation, the headphone wire can be cut again to complete the tangent. When the headphone wire is cut, the collection container can be picked up for subsequent processing of the cut headphone wire. In this way, the headphone wire can be pressed and limited before cutting to prevent the bending of the earphone from affecting the cutting, thereby ensuring the flatness of the cutting. Example 2

[0031] On the basis of embodiment 1, it also includes a limit rod 11, a spring B111, a positioning rod 112, a spring C113, a lifting frame 114, a tension spring 115, a U-shaped rod 116 and a vertical rod 117, see Figure 4-Figure 6As shown, the front and rear sides of the middle of the fixing plate 1 are symmetrically and slidably connected with an L-shaped limit rod 11. When the limit rod 11 moves inward and contacts the earphone wire, the limit rod 11 can realize the center positioning of the earphone wire. A spring B111 is connected between the inner side of the limit rod 11 and the inner side of the fixing plate 1. Three vertical rods 117 are fixedly connected to the left and right sides of the bottom of the fixing plate 1. A positioning rod 112 is slidably mounted between the three vertical rods 117 on the same side. The middle of the positioning rod 112 is inclined toward the fixing plate 1. The inclined position of the positioning rod 112 is consistent with the limit rod 11. When the positioning rod 112 moves downward, the positioning rod 112 can drive the limiting rod 11 to move inward, and a spring C113 is connected between the bottom of the positioning rod 112 and the lower part of the vertical rod 117. A lifting frame 114 is fixedly connected between the rear ends of the left and right positioning rods 112, and a U-shaped rod 116 is fixedly connected to the rear side of the bottom of the cutter 4. The U-shaped rod 116 slides through the rear side of the fixed plate 1, and the U-shaped rod 116 slides through the lifting frame 114. Tension springs 115 are symmetrically connected between the inner bottom of the U-shaped rod 116 and the bottom of the lifting frame 114.

[0032] It also includes a positioning wheel 12, a guide rod 121, a guide rod 122, a return spring 123 and a tension block 124, see Figure 4 and Figure 7 As shown, guide rods 122 are fixedly connected to the tops of the left and right pressure plates 7, and a tensioning block 124 is slidably mounted on the guide rod 122. When the tensioning block 124 moves outward, the tensioning block 124 can pull and tighten the headphone wire. Reset springs 123 are respectively connected between the outer sides of the tensioning blocks 124 on the left and right sides and the outer sides of the guide rods 122 on the left and right sides. The tops of the tensioning blocks 124 on the left and right sides are connected to guide rods 121 by welding. The upper part of the guide rod 121 is an inclined surface. The outer sides of the bottoms of the left and right limit plates 9 are rotatably connected to positioning wheels 12 in contact with the guide rods 121. When the positioning wheel 12 moves downward, the positioning wheel 12 can drive the guide rods 121 to move outward.

[0033] When the telescopic rod of the electric push rod 5 is extended to drive the cutter 4 to move downward, the cutter 4 moves downward and drives the U-shaped rod 116 to move downward, the U-shaped rod 116 moves downward and drives the lifting frame 114 to move downward through the tension spring 115, the lifting frame 114 moves downward and drives the positioning rod 112 to move downward, the spring C113 is compressed, the positioning rod 112 moves downward and drives the front and rear limit rods 11 to move inward, the spring B111 is compressed, the front and rear limit rods 11 move inward and align with the headphone cord, the front and rear limit rods 11 center the headphone cord so that the headphone cord is directly below the cutter 4, and when the front and rear limit rods 11 move inward to the maximum stroke, the limit rods 11 stop moving inward, and the limit rods 11 stop the positioning rod 112 from moving inward. When the electric push rod 5 is moved downward, the lifting frame 114 also stops moving downward, the U-shaped rod 116 continues to move downward to stretch the tension spring 115, and then the cutter 4 continues to move downward to cut the earphone wire after being positioned in the center. When the telescopic rod of the electric push rod 5 is shortened, the cutter 4 is driven to move upward and reset. The cutter 4 is reset and the limit plate 9 is driven to move upward and reset through the pressure rod 8. The limit plate 9 moves upward to first make the tension spring 115 shrink and reset. Then the limit plate 9 drives the lifting frame 114 to move upward and reset through the tension spring 115. The lifting frame 114 moves upward and resets, driving the positioning rod 112 to move upward and reset. The positioning rod 112 resets and stops limiting the limit rod 11. Due to the action of the spring B111, the limit rod 11 moves outward and resets to disengage from the earphone wire. In this way, the phenomenon of bending and offsetting of the earphone wire can be prevented, which causes deviation in cutting, thereby improving the accuracy of cutting.

[0034] When the limit plate 9 drives the pressure plate 7 to move downward through the spring A91, the pressure plate 7 moves downward and also drives the guide rod 122 to move downward. The guide rod 122 moves downward and drives the tensioning block 124 to move downward. The tensioning block 124 moves downward and drives the guide rod 121 to move downward. At the same time, the limit plate 9 moves downward and also drives the positioning wheel 12 to move downward. The positioning wheel 12 moves downward synchronously with the guide rod 121. Then, when the pressure plate 7 moves downward to press the headphone wire to a limit position, the tensioning block 124 contacts the headphone wire, and the tensioning block 124 stops moving downward. The tensioning block 124 causes the guide rod 121 to stop moving downward. As the positioning wheel 12 continues to move downward, the positioning wheel 12 drives the guide rod 121 to move outward. The rod 121 moves outwards and drives the tension block 124 to move outwards. The reset spring 123 is compressed, and the tension block 124 moves outwards to pull the earphone wire, so that the earphone wire is tightened. Then the cutter 4 cuts the tightened earphone wire. When the earphone wire is cut, the limit plate 9 moves upwards and resets, and drives the pressure plate 7 to move upwards and resets through the spring A91. The limit plate 9 resets and first drives the positioning wheel 12 to move upwards and stop limiting the guide rod 121. Due to the action of the reset spring 123, the tension block 124 moves inwards and resets, driving the guide rod 121 to move inwards and reset. Then the pressure plate 7 resets and drives the tension block 124 to move upwards and reset through the guide rod 122. The tension block 124 resets and disengages from the earphone wire. In this way, the earphone wire can be prevented from being loose and affecting the cutting, thereby improving the effect of the earphone wire being cut. Example 3

[0035] On the basis of the embodiment 1 and the embodiment 2, a stripper plate 13 and a fixing frame 14 are also included. Figure 8 As shown, a fixing frame 14 is installed on the right side of the fixing plate 1 by means of bolt connection, and a discharge plate 13 is fixedly connected to the fixing frame 14. The discharge plate 13 is inclined. When the cut headphone wire moves to the right and falls onto the discharge plate 13, the discharge plate 13 can guide the headphone wire.

[0036] Also includes a brush tube 15, see Figure 8 As shown, a fixing frame 14 is installed on the right side of the fixing plate 1 by means of bolt connection, and a brush tube 15 is fixedly connected to the fixing frame 14 on the inner left side of the left side guide frame 6 for unloading along the circumferential direction. When the headphone cord moves to the right, the brush tube 15 can remove impurities attached to the headphone cord.

[0037] Also includes a guide cover 16, see Figure 8 As shown, a fixing frame 14 is installed on the right side of the fixing plate 1 by means of bolt connection, and a guide cover 16 is fixedly connected to the fixing frame 14, and the left side of the outer side of the left side guide frame 6 for unloading is fixedly connected to the guide cover 16. The left side of the guide cover 16 is inclined toward the center of the circle, and the guide cover 16 can guide the headphone wire.

[0038] When the cut earphone wire moves to the right outside the guide frame 6, the cut earphone wire falls onto the discharge plate 13. Since the discharge plate 13 is inclined, the earphone wire in the discharge plate 13 falls into the collection container. In this way, the earphone wire can be accurately dropped into the collection container.

[0039] When the earphone wire extends from the left side into the left guide frame 6, the earphone wire contacts the brush tube 15, and the brush tube 15 removes the impurities attached to the earphone wire. After the impurities are removed, the earphone wire continues to move rightward to the cutting position to be cut. In this way, the impurities attached to the earphone wire can be prevented from affecting the subsequent use, thereby ensuring that the earphone wire is clean and tidy.

[0040] When the headphone wire needs to be extended into the left guide frame 6 from the left side, the headphone wire contacts the guide cover 16. Since the left side of the guide cover 16 is inclined, the headphone wire can be accurately guided, so that the headphone wire can accurately enter the left guide frame 6.

[0041] Finally, it is necessary to point out that the above content is only used to help understand the technical solution of the present invention and cannot be understood as limiting the scope of protection of the present invention; non-essential improvements and adjustments made by technical personnel in the field of technology based on the above content of the present invention are all within the scope of protection required by the present invention.

Claims

1. A wire cutting device for earphone production, comprising a fixed plate (1) and a support frame (2) mounted on the fixed plate (1), a guide frame (6) symmetrically fixedly connected to the middle of the top of the fixed plate (1), a material transport component for driving the earphone wire to move is arranged on the guide frame (6), a positioning frame (3) is fixedly connected to the top of the fixed plate (1), an electric push rod (5) is fixedly connected to the middle of the positioning frame (3), a cutter (4) is fixedly connected to the end of the telescopic rod of the electric push rod (5), and a long strip hole matching the cutter (4) is opened in the middle of the top of the fixed plate (1), characterized in that: The upper part of the cutter (4) is symmetrically fixed with a pressure rod (8), and the outer bottoms of the left and right pressure rods (8) are fixedly connected to a limit plate (9). The limit plate (9) is provided with a clamping assembly, which moves toward the fixing plate (1) to clamp the headphone wire to a limit position.

2. A wire cutting device for earphone production according to claim 1, characterized in that: The clamping assembly comprises a clamping plate (7) slidably connected to the limiting plate (9), the clamping plate (7) moves toward the position of the fixing plate (1), thereby clamping and limiting the headphone wire, the left and right clamping plates (7) are respectively slidably connected to the top of the left and right guide frames (6), and two springs A (91) are connected between the upper part of the clamping plate (7) and the top of the limiting plate (9).

3. A wire cutting device for earphone production according to claim 2, characterized in that: The inner side of the pressing plate (7) is an arc shape that matches the outer side of the earphone wire.

4. A wire cutting device for earphone production according to claim 1, characterized in that: The material transport assembly comprises a material transport wheel (10) rotatably connected to the front and rear sides of the guide frame (6); a worm gear (102) is fixedly sleeved on the lower part of the material transport wheel (10) along the circumferential direction; a worm (101) meshing with the worm gear (102) is rotatably connected to the left side of the bottom of the fixed plate (1); a servo motor (103) is fixedly connected to the front side of the bottom of the fixed plate (1); and a synchronous belt assembly is used to transmit power between the output shaft of the servo motor (103) and the worm gears (101) on both sides.

5. A wire cutting device for earphone production according to claim 3, characterized in that: The invention also includes a positioning component arranged on the fixing plate (1), the positioning component is used to center the earphone cable, the positioning component includes a limit rod (11) slidably connected to the front and rear sides of the middle of the fixing plate (1), the limit rod (11) is L-shaped, and a spring B (111) is connected between the inner side of the limit rod (11) and the inner side of the fixing plate (1), three vertical rods (117) are fixedly connected to the left and right sides of the bottom of the fixing plate (1), and a positioning rod (112) for driving the limit rod (11) to move inward is slidably set between the three vertical rods (117) on the same side. The rod (112) contacts the limit rod (11), a spring C (113) is connected between the bottom of the positioning rod (112) and the lower part of the vertical rod (117), a lifting frame (114) is fixedly connected between the rear ends of the positioning rods (112) on the left and right sides, a U-shaped rod (116) is fixedly connected to the rear side of the bottom of the cutter (4), the U-shaped rod (116) slidably penetrates the rear side of the fixed plate (1), the U-shaped rod (116) slidably penetrates the lifting frame (114), and a tension spring (115) is symmetrically connected between the inner bottom of the U-shaped rod (116) and the bottom of the lifting frame (114).

6. A wire cutting device for earphone production according to claim 4, characterized in that: The middle of the positioning rod (112) is inclined toward the fixing plate (1), and the inclined position of the positioning rod (112) is in contact with the limiting rod (11).

7. A wire cutting device for earphone production according to claim 4, characterized in that: The invention also comprises a tensioning assembly arranged on the pressure plate (7), the tensioning assembly being used for pulling and tightening the earphone cable, the tensioning assembly comprising a guide rod (122) fixedly connected to the top of the pressure plates (7) on both sides, a tensioning block (124) for tightening the earphone cable being slidably mounted on the guide rod (122), a return spring (123) being connected between the upper part of the outer surface of the tensioning block (124) and the outer side of the guide rod (122), the top of the tensioning blocks (124) on both sides being fixedly connected to a guide rod (121), the upper part of the guide rod (121) being an inclined surface, the outer sides of the bottoms of the limit plates (9) on both sides being rotatably connected to a positioning wheel (12) in contact with the guide rod (121), the positioning wheel (12) moving in the direction of the fixed plate (1), thereby driving the guide rod (121) to move outward.

8. A wire cutting device for earphone production according to claim 6, characterized in that: It also includes a discharge plate (13) and a fixing frame (14), wherein the fixing frame (14) is fixedly connected to the right side of the fixing plate (1), and the discharge plate (13) for guiding the headphone wire is fixedly connected to the fixing frame (14), and the discharge plate (13) is arranged to be inclined.

9. A wire cutting device for earphone production according to claim 7, characterized in that: It also includes a brush tube (15), which is fixedly connected along the circumferential direction to the left inner side of the left guide frame (6) and is used to remove impurities attached to the earphone wire.

10. A wire cutting device for earphone production according to claim 8, characterized in that: It also includes a guide cover (16), and the guide cover (16) for guiding the earphone wire is fixedly connected to the left part of the outer side of the left guide frame (6).

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