Welding device for earphone production and assembly

Abstract

The invention relates to the field of welding, in particular to a welding device for earphone production and assembly, which comprises a worktable and a welder mounted on the worktable, and a liftable welding head is mounted on the welder. According to the invention, the motor drives the second gear to rotate so as to drive the first gear, the rotating ring and the round-hole plug to rotate, so that three wire ends of the electric wire are annularly welded in a welding area corresponding to the round-hole plug, and the situation that a ground wire, a live wire and a zero wire are connected in series is prevented; the problems that in the prior art, labor is generally relied on, the threshold is high, and labor cost is high are solved. The protective sleeve is sleeved outside the wire and the round hole plug in a thermal shrinkage mode through the thermal shrinkage sleeving assembly, an effective protective layer is provided for a welding area of the wire and the round hole plug, and the problems that in the subsequent transfer process of the wire, the wire is prone to being affected by factors such as external force pulling, collision or friction, welding points are loosened, fall off and even broken, and semi-finished products are scrapped are solved.

Description

Technical Field

[0001] This invention relates to the field of welding, and more particularly to a welding apparatus for headphone manufacturing and assembly. Background Technology

[0002] In the current headphone manufacturing technology system, the welding of the round plug and the wire still largely relies on manual operation.

[0003] Due to the structural characteristics of round-hole plugs, their welding areas are usually designed with specific partitioned structures. During the welding process, workers need to accurately weld the ground wire, neutral wire, and live wire of the wire to the three independent welding areas of the round-hole plug respectively to prevent the ground wire, neutral wire, and live wire from being connected in series. The welding operation is difficult and requires a high level of skill from workers, which raises the labor threshold for enterprises and results in high labor costs. In addition, during the welding process, workers need to hold the wire and the round-hole plug at close range, and if they are not careful, they may come into contact with the high-temperature welding head, causing burns. Furthermore, after welding the round plug to the wire, the semi-finished product needs to be transferred to the next process for injection molding to form a protective layer and ensure the stability and safety of the weld. However, during the transfer process, since the weld has not yet formed an effective protective layer, the weld between the wire and the round plug is directly exposed and is easily affected by external forces such as pulling, collision, or friction, which can cause the weld to loosen, fall off, or even break, resulting in the scrapping of the semi-finished product. This not only reduces the product qualification rate but also increases material waste and production costs, seriously affecting the continuity and stability of the entire headphone production process. Summary of the Invention

[0004] To overcome the shortcomings of existing headphone plug and wire welding operations, which generally rely on manual operation, are difficult to operate, have high labor costs, and have no effective protective layer formed at the weld point after welding, making them susceptible to detachment or even breakage due to external pulling during transportation, this invention provides a welding device for headphone production and assembly.

[0005] The technical embodiment of the present invention is as follows: a welding device for headphone production and assembly includes a workbench and a welding device mounted on the workbench; a liftable welding head is mounted on the welding device; a first movable plate is mounted on the workbench, and the first movable plate is driven to move back and forth by an electric guide rail; the welding device is slidably connected to the first movable plate; a first fixed ring is fixedly connected to the first movable plate; a rotating ring is rotatably connected to the first fixed ring; a first gear is fixedly connected to the outer side of the rotating ring; a motor is mounted on the first movable plate; a second gear is fixedly connected to the output end of the motor; the second gear meshes with the first gear; a placement block for placing a round-hole plug is fixedly connected to the first movable plate; a clamping assembly for clamping the round-hole plug is fixedly connected to the inner side of the rotating ring; a fixed plate is fixedly connected to the workbench; a buckle is fixedly connected to the fixed plate; a wire clamping assembly for fixing the fixed wire end of the wire is connected to the fixed plate; a heat-shrinkable sleeve assembly for heat-shrinking the protective sleeve onto the wire and the round-hole plug is connected to the fixed plate.

[0006] Furthermore, it is particularly preferred that the clamping assembly includes a first electric push rod and a clamping block fixedly connected to the rotating ring; two first electric push rods symmetrically connected to each other are fixedly connected to the inner ring surface of the rotating ring, and the output end of each first electric push rod is fixedly connected to a clamping block.

[0007] Furthermore, it is particularly preferred that the wire clamping assembly includes a plurality of second electric push rods and wire clamping grooves fixedly attached to a fixed plate; each second electric push rod is fixedly attached with an ohmic wire clamping groove.

[0008] Furthermore, it is particularly preferred that the heat shrink kit assembly includes a second movable plate connected to a fixed plate; the fixed plate is connected to a second movable plate that can move left and right; a second fixed ring is fixedly connected to the second movable plate; a protective cover is fixedly connected to the left side of the second fixed ring; a plurality of heaters are arrayed inside the protective cover; a slot is opened on the left side of the second fixed ring; the slot is located inside the protective cover; and the protective sleeve is inserted into the slot.

[0009] Furthermore, it is particularly preferred that the device also includes a limiting ring fixed inside the protective cover; the limiting ring is fixed to the left side of the protective cover; and the inner side of the limiting ring is fitted with the protective sleeve with a clearance.

[0010] Furthermore, it is particularly preferred that two symmetrically positioned limiting blocks are fixed to the lower side of the welding head; the limiting blocks are clearance-fitted with the round hole plug.

[0011] Furthermore, it is particularly preferred that the left side of the card slot is open.

[0012] Furthermore, it is particularly preferred that an electrode plate is provided inside the clamping block.

[0013] Furthermore, it is particularly preferred that the protective cover is made of flame-retardant epoxy resin.

[0014] Furthermore, it is particularly preferred that the device also includes a rotating wheel and a pawl connected within the second fixed ring; several pawls are rotatably connected within the second fixed ring; a rubber ring is fixedly attached to the outer side of each rotating wheel; the rubber ring contacts the outer surface of the wire; each rotating wheel is provided with a connecting part; each connecting part is provided with a ratchet tooth; several pawls are rotatably connected within each second fixed ring via a torsion spring; each ratchet tooth contacts a corresponding pawl; and, based on a front-to-back view, the pawls can only rotate clockwise.

[0015] Beneficial effects: During the welding process of wires and round hole plugs, the motor drives the second gear to rotate, which in turn drives the first gear, rotating ring and round hole plug to rotate, thereby welding the three wire ends of the wire in a ring shape in the corresponding welding area of ​​the round hole plug, preventing the ground wire, live wire and neutral wire from being connected in series, and solving the problems of high labor costs and labor barriers that are common in existing technologies. After the wire and the round hole plug are welded, the protective sleeve is heat-shrinked onto the outside of the wire and the round hole plug using a heat-shrink fitting assembly. This provides an effective protective layer for the welding area of ​​the wire and the round hole plug, and solves the problem that the wire is easily affected by external forces such as pulling, collision or friction during subsequent transportation, which can cause the welding point to loosen, fall off or even break, resulting in the scrapping of semi-finished products. This not only reduces the product qualification rate, but also increases material waste and production costs, and seriously affects the continuity and stability of the entire headphone production process. During the process of moving the heat shrink sleeve assembly to the right and resetting, the wire is pulled to test the firmness of the wire and the round hole plug after welding. At the same time, the heat shrink effect of the protective sleeve is tested, and some defective products with poor welding are directly picked out, which improves the product qualification rate, prevents defective products with poor welding from entering the subsequent processing process, reduces ineffective cost losses, and reduces resource waste. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the welding device for headphone production and assembly according to the present invention; Figure 2 This is a three-dimensional structural diagram of the welding device, round hole plug, first moving plate, first fixing ring, first gear, second gear and motor assembly of the present invention; Figure 3 This is a three-dimensional structural diagram of the combination of the round hole plug, the first fixing ring, the rotating ring, the first gear, the first electric push rod, the clamping block and the placement block of the present invention; Figure 4 This is a three-dimensional structural diagram of the combination of the wire, protective sleeve, fixing plate, second electric push rod, wire clamping groove, second moving plate, second fixing ring, protective cover and heater of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of area A in the middle; Figure 6 For the present invention Figure 4 Enlarged view of area B in the middle; Figure 7 This is a diagram showing the welding state of the welding head of the present invention; Figure 8 This is a diagram showing the heat-shrinkable state of the protective sleeve of the present invention.

[0017] In the diagram: 1-Workbench, 2-Welder, 2001-Welding head, 2002-Limit block, 3-Wire, 3001-Ground wire, 3002-Live wire, 3003-Neutral wire, 4-Round plug, 5-Protective sleeve, 101-First moving plate, 102-First fixed ring, 103-Rotating ring, 104-First gear, 105-Second gear, 106-Motor, 107-First electric push rod, 108-Clamp Holding block, 109-Placement block, 201-Fixing plate, 20101-Snap fastener, 202-Second electric push rod, 203-Wire slot, 204-Second moving plate, 205-Second fixing ring, 20501-Slot, 206-Protective cover, 207-Heater, 208-Limiting ring, 209-Rotating wheel, 20901-Rubber ring, 20902-Connecting part, 20903-Ratchet, 210-Pawl. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: A welding device for headphone manufacturing and assembly, such as... Figures 1-8 As shown, it includes a workbench 1 and a welding device 2; the welding device 2 is installed on the workbench 1; the welding device 2 is equipped with a liftable welding head 2001, which is driven to rise and fall by an electric push rod. It also includes a first movable plate 101, a first fixed ring 102, a rotating ring 103, a first gear 104, a second gear 105, a motor 106, a clamping assembly, a placement block 109, a fixed plate 201, a wire clamping assembly, and a heat shrink kit assembly; the first movable plate 101, which can move back and forth, is installed on the left side of the workbench 1, and is driven to move back and forth by an electric guide rail; the welder 2 is slidably connected to the rear side of the first movable plate 101, and is driven to move left and right by an electric guide rail; the first fixed ring 102 is fixedly connected to the left side of the first movable plate 101; the first fixed ring 102... A rotating ring 103 is rotatably connected to ring 102; a first gear 104 is fixedly connected to the outer side of rotating ring 103; a motor 106 is mounted on the first moving plate 101; a second gear 105 is fixedly connected to the output end of motor 106; the second gear 105 meshes with the first gear 104; a placement block 109 is fixedly connected to the first moving plate 101; a clamping assembly is fixedly connected to the inner side of rotating ring 103; a fixing plate 201 is fixedly connected to the right side of workbench 1; a buckle 20101 is fixedly connected to fixing plate 201; a wire clamping assembly is connected to fixing plate 201; and a heat shrink sleeve assembly is connected to fixing plate 201. In this embodiment, preparation work is first carried out. The worker places the round hole plug 4 on the placement block 109, then places the wire 3 on the buckle 20101 for fixation, and passes the left end of the wire 3 through the heat shrink sleeve assembly. Then, the three wire ends of the left end of the wire 3 are placed on the wire clamping assembly to fix the three wire ends of the wire 3. Figure 2 and Figure 4As shown: There are three wire soldering areas on the right side of the round hole plug 4, from right to left: ground wire 3001 soldering area, live wire 3002 soldering area, and neutral wire 3003 soldering area; the left side of the wire 3 is divided into three wire ends, from front to back: ground wire 3001, live wire 3002, and neutral wire 3003. After being processed by the workers in advance, the lengths of the three wire ends are: ground wire 3001 is shorter than live wire 3002, live wire 3002 is shorter than neutral wire 3003, and the exposed copper wire length of each wire end is less than the length of the corresponding soldering area of ​​the round hole plug 4.After preparation, the welding device is started. The round hole plug 4 is clamped and fixed by the clamping assembly. Then, the electric guide rail connected to the first moving plate 101 drives the first moving plate 101 to move back and forth, moving the round hole plug 4 to the ground wire 3001, so that the exposed copper wire of the ground wire 3001 contacts the welding area of ​​the ground wire 3001 of the round hole plug 4. Then, the electric push rod on the welder 2 drives the welding head 2001 to move down, and the welding head 2001 presses the exposed copper wire of the ground wire 3001 onto the welding area of ​​the ground wire 3001 of the round hole plug 4 for welding and fixing. After the ground wire 3001 is welded, with the reference from right to left, the motor 106 is started to move the first... The second gear 105 rotates 102° clockwise, which in turn drives the first gear 104, the rotating ring 103, and the clamping assembly to rotate 102° counterclockwise. This, in turn, drives the round hole plug 4 to rotate 102° counterclockwise, rotating the welded ground wire 3001 to the lower side. Then, the wire clamping assembly releases the ground wire 3001 from its fixation, and the electric push rod on the welder 2 moves the welding head 2001 upward and resets it. Then, through the electric guide rail connected to the first moving plate 101, the first moving plate 101 moves back and forth, moving the round hole plug 4 to the live wire 3002, so that the exposed copper wire of the live wire 3002 is connected to the welding area of ​​the live wire 3002 of the round hole plug 4. The exposed copper wire of the live wire 3002 is pressed onto the welding area of ​​the live wire 3002 in the round hole plug 4 by the welding head 2001 for welding and fixing. After the live wire 3002 is welded, with a reference from right to left, the motor 106 is started to rotate the second gear 105 clockwise by 102°. In turn, the second gear 105 drives the first gear 104, the rotating ring 103 and the clamping assembly to rotate counterclockwise by 102°, which in turn drives the round hole plug 4 to rotate counterclockwise by 102°, rotating the welded live wire 3002 to the lower side. Then, the wire clamping assembly is released from fixing the live wire 3002, and the welding head 2001 is moved upward and reset by the electric push rod on the welding machine 2. Then, it is connected to the welding head 2001 for welding and fixing. The electric guide rail connected to the first moving plate 101 drives the first moving plate 101 to move back and forth, moving the round hole plug 4 to the neutral wire 3003, so that the exposed copper wire of the neutral wire 3003 comes into contact with the welding area of ​​the live wire 3002 of the round hole plug 4, and the exposed copper wire of the neutral wire 3003 is pressed onto the welding area of ​​the live wire 3002 of the round hole plug 4 by the welding head 2001 for welding and fixing. In this way, the three wire ends of the wire 3 are welded in a ring in the corresponding welding area of ​​the round hole plug 4, preventing the ground wire 3001, the live wire 3002 and the neutral wire 3003 from being connected in series, solving the problems of high labor costs and reliance on manual labor in the existing technology.After the wire 3 is welded to the round-hole plug 4, a protective sleeve 5 is heat-shrinkably fitted onto the outside of the wire 3 and round-hole plug 4 using a heat-shrink fitting assembly. This provides an effective protective layer for the welding area of ​​the wire 3 and round-hole plug 4, preventing the wire 3 from being easily affected by external forces such as pulling, collisions, or friction during subsequent transportation, which could lead to loosening, detachment, or even breakage of the weld joint, resulting in the scrapping of semi-finished products. This not only reduces the product qualification rate but also increases material waste and production costs, seriously affecting the continuity and stability of the entire headphone production process. After the protective sleeve 5 is heat-shrinkably fitted, the clamping assembly is released from the round-hole plug 4, and then the worker removes the welded wire 3 and replaces it with a new wire 3 and round-hole plug 4 for welding.

[0020] In some optional implementations of this embodiment, such as Figure 2 and Figure 3 As shown, the clamping assembly includes a first electric push rod 107 and a clamping block 108; two first electric push rods 107 are fixedly connected to the inner ring surface of the rotating ring 103, and the output end of each first electric push rod 107 is fixedly connected to a clamping block 108.

[0021] In this embodiment, the specific working principle of the clamping component is as follows: After the preparation work is completed, the welding device is started, and the two clamping blocks 108 are pushed towards the round hole plug 4 by the first electric push rod 107, so that the two clamping blocks 108 fit together to wrap and clamp the round hole plug 4.

[0022] In some optional implementations of this embodiment, such as Figure 2 and Figure 4 As shown, the wire clamping assembly includes a second electric push rod 202 and a wire clamping groove 203; three second electric push rods 202 are fixedly connected to the left side of the fixing plate 201; each second electric push rod 202 is fixedly connected to an O-cage wire groove 203.

[0023] In this embodiment, the specific working principle of the wire clamping assembly is as follows: In the initial state, the telescopic end of the second electric push rod 202 extends upward. At this time, the wire clamping groove 203 is higher than the round hole plug 4. After the worker passes the wire 3 through the heat shrink kit assembly, the three wire ends of the wire 3, the ground wire 3001, the live wire 3002 and the neutral wire 3003, are inserted into the moving wire clamping groove 203 in sequence from front to back. Then, when the round hole plug 4 moves to the corresponding wire end, the wire end is exactly above the round hole plug 4, which facilitates the subsequent welding operation.

[0024] In some optional implementations of this embodiment, such as Figures 4-6 and Figure 8As shown, the heat shrinkable kit assembly includes a second movable plate 204, a second fixing ring 205, a protective cover 206, and a heater 207. The second movable plate 204, which can move left and right, is connected to the fixing plate 201 and is driven to move left and right by an electric guide rail. The second fixing ring 205 is fixedly connected to the second movable plate 204. The protective cover 206 is fixedly connected to the left side of the second fixing ring 205. Several heaters 207 are arrayed inside the protective cover 206. A slot 20501 is opened on the left side of the second fixing ring 205. The slot 20501 is located inside the protective cover 206. The protective sleeve 5 is inserted into the slot 20501.

[0025] In this embodiment, the specific working principle of the heat shrinkable kit assembly is as follows: When installing the wire 3, the worker first pushes the protective sleeve 5 into the protective cover 206 from left to right and inserts it into the slot 20501 for fixation. Then, the wire 3 is passed through the second fixing ring 205 and the protective sleeve 5 from left to right, and the three ends of the wire 3 are placed on the wire clamping assembly. The right end of the wire 3 is then connected to the external detection device. After the wire 3 is welded to the round hole plug 4, the electric guide rail on the lower side of the second moving plate 204 drives the second moving plate 204 to move to the left, thereby driving the protective sleeve 5, the second fixing ring 205, and the protective cover 206 to move to the left. When the right side of the protective cover 206 contacts the placement block 109, the second moving plate 204 stops moving. At this time, the welding area of ​​the round hole plug 4 and the wire end of the wire 3 are all located inside the protective sleeve 5. Then, the heater 207 is started to heat the protective sleeve 5. The heat-shrink sleeve 5 is placed on the outside of the wire 3 and the round hole plug 4, providing an effective protective layer for the welding area of ​​the wire 3 and the round hole plug 4. It should be noted that the heater 207 heats the protective sleeve 5 from left to right, causing the protective sleeve 5 to shrink from left to right. This solves the problem that when the entire area is heated simultaneously, the protective sleeve 5 will expand and then shrink rapidly due to the overall heating, which may cause the internal air to not be able to escape in time, forming local air bubbles and resulting in poor heat shrinkage effect. When the protective sleeve 5 shrinks to the right side, the electric guide rail on the lower side of the second moving plate 204 drives the second moving plate 204 to move a distance to the right, bringing out the protective sleeve 5 inserted in the slot 20501, and then heat shrinking the right end of the protective sleeve 5. After the protective sleeve 5 is heat-shrinked, the electric guide rail on the lower side of the second moving plate 204 drives the second moving plate 204 to move to the right and reset, releasing the clamping component from the round hole plug 4. Then the worker can take out the welded wire 3.

[0026] In a further preferred embodiment of the present invention, such as Figure 5 As shown, it also includes a limiting ring 208; the limiting ring 208 is fixedly connected to the left side of the protective cover 206; the inner side of the limiting ring 208 is clearance-fitted with the protective sleeve 5.

[0027] In this embodiment, during the process of the worker pushing the protective sleeve 5 into the protective cover 206 and inserting it into the slot 20501, the protective sleeve 5 is limited by the limiting ring 208 to prevent the protective sleeve 5 from shifting and affecting the worker's insertion of the protective sleeve 5 into the slot 20501.

[0028] In a further preferred embodiment of the present invention, such as Figure 7 As shown, two symmetrically positioned limiting blocks 2002 are fixed to the lower side of the welding head 2001; the limiting blocks 2002 are clearance-fitted with the round hole plug 4.

[0029] In this embodiment, when the welding head 2001 moves downward to perform welding, the limiting block 2002 will first contact the outer surface of the round hole plug 4 and limit the wire end in the cavity formed between the round hole plug 4 and the welding head 2001, preventing the wire end from slipping out of the welding area of ​​the welding head 2001 and affecting the welding of the wire end.

[0030] In a further preferred embodiment of the present invention, such as Figure 6 As shown, the left side of the card slot 20501 is open.

[0031] In this embodiment, the left side of the slot 20501 is open to facilitate the worker to insert the protective sleeve 5 into the slot 20501 and lock and fix the protective sleeve 5.

[0032] In a further preferred embodiment of the present invention, such as Figure 6 As shown, an electrode sheet is provided inside the clamping block 108.

[0033] In this embodiment, the wire 3 is first placed on the buckle 20101, and then the wire end on the right end of the wire 3 is connected to the external testing device. After the protective sleeve 5 is heat-shrinked, the electrode plate in the clamping block 108 is used to energize the round hole plug 4, so that the electrical performance of the wire 3 can be directly tested after welding, reducing the process and improving production efficiency.

[0034] In a further preferred embodiment of the present invention, such as Figure 4 As shown, the protective cover 206 is made of flame-retardant epoxy resin.

[0035] In this embodiment, the protective cover 206 is made of flame-retardant epoxy resin, which has good electrical insulation and fire-retardant properties. When the wire 3 is damaged during the detection process, resulting in discharge and burnout, the protective cover 206 provides insulation and flame retardancy, preventing the spread of risk, reducing the harm of accidents, and improving production safety.

[0036] Example 2: Based on Example 1, as follows Figure 4 , Figure 6 and Figure 8As shown, it also includes a rotating wheel 209 and a pawl 210; four are rotatably connected inside the second fixing ring 205; a rubber ring 20901 is fixed to the outside of each rotating wheel 209; the rubber ring 20901 is in contact with the outer surface of the wire 3; each rotating wheel 209 is provided with a connecting part 20902; each connecting part 20902 is provided with a ratchet 20903; four pawls 210 are rotatably connected inside each second fixing ring 205 by a torsion spring; each ratchet 20903 is in contact with the corresponding pawl 210; with the view from front to back as the reference, the pawl 210 can only rotate clockwise.

[0037] In this embodiment, after the worker passes the wire 3 through the second fixing ring 205, the rubber ring 20901 on the outside of the rotating wheel 209 will contact the outer surface of the wire 3 and clamp the wire 3. During the heat shrinking process of the protective sleeve 5, when the electric guide rail on the lower side of the second moving plate 204 drives the second moving plate 204, the protective sleeve 5, the second fixing ring 205 and the protective cover 206 to move to the left, the right end of the wire 3 is clamped by the buckle 20101 and cannot be pulled. Therefore, the rotating wheel 209 and the surface of the wire 3 will generate a large friction force. After friction, it will rotate counterclockwise, which in turn will drive the connecting part 20902 and the ratchet 20903 to rotate counterclockwise. During this process, the ratchet 20903 will come into contact with and squeeze the pawl 210. After being pressed, the pawl 210 will rotate clockwise. Then the ratchet 20903 will pass over the pawl 210. Therefore, during the process of the second fixing ring 205 moving to the left, the rotating wheel 209 will continuously rotate counterclockwise after friction with the surface of the wire 3, reducing the friction force and allowing the second fixing ring 205 to move smoothly to the left. After the heat shrink sleeve 5 is completed, it will be connected through the first The electric guide rail on the lower side of the second movable plate 204 drives the second movable plate 204 and the second fixed ring 205 to move to the right and reset. At this time, the rotating wheel 209 generates friction with the surface of the wire 3, and the rotating wheel 209 rotates clockwise, thereby driving the connecting part 20902 and the ratchet 20903 to rotate clockwise. During this process, the ratchet 20903 will come into contact with the pawl 210 and squeeze it. After being squeezed, the pawl 210 will rotate counterclockwise, but the pawl 210 cannot rotate counterclockwise. Therefore, after the ratchet 20903 comes into contact with the pawl 210, it will be resisted by the pawl 210. Since the stop cannot rotate, the rotating wheel 209 cannot rotate clockwise. Therefore, during the process of the second moving plate 204 and the second fixed ring 205 moving to the right and resetting, the rubber ring 20901 will generate a large friction force with the outer surface of the wire 3, thereby generating a pulling force on the wire 3. This is used to test the firmness of the wire 3 after welding to the round hole plug 4, and at the same time to test the heat shrink effect of the protective sleeve 5. This directly picks out some defective products with poor welding, improves the product qualification rate, avoids defective products with poor welding from entering the subsequent processing process, reduces ineffective cost losses, and reduces resource waste.

[0038] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the invention without departing from the principles and spirit of the invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for illustrative purposes only and is not intended to limit the invention; rather, the scope of protection is defined by the content of the claims.

Claims

1. A welding apparatus for headphone manufacturing and assembly, comprising a worktable (1) and a welding device (2) mounted on the worktable (1); a liftable welding head (2001) is mounted on the welding device (2); characterized in that: It also includes a first movable plate (101) mounted on a workbench (1), which is driven to move back and forth by an electric guide rail; a welding machine (2) is slidably connected to the first movable plate (101); a first fixed ring (102) is fixedly connected to the first movable plate (101); a rotating ring (103) is rotatably connected to the first fixed ring (102); a first gear (104) is fixedly connected to the outside of the rotating ring (103); a motor (106) is mounted on the first movable plate (101); a second gear (105) is fixedly connected to the output end of the motor (106); the second gear (105) ) meshes with the first gear (104); a placement block (109) for placing the round hole plug (4) is fixedly connected to the first moving plate (101); a clamping assembly for clamping the round hole plug (4) is fixedly connected to the inner side of the rotating ring (103); a fixing plate (201) is fixedly connected to the worktable (1); a buckle (20101) is fixedly connected to the fixing plate (201); a wire clamping assembly for fixing the wire end of the wire (3) is connected to the fixing plate (201); a heat shrink fitting assembly for heat shrinking the protective sleeve (5) onto the wire (3) and the round hole plug (4) is connected to the fixing plate (201).

2. The welding apparatus for headphone production and assembly according to claim 1, characterized in that: The clamping assembly includes a first electric push rod (107) fixed to the rotating ring (103) and a clamping block (108); two first electric push rods (107) are fixedly connected to the inner ring surface of the rotating ring (103) and are symmetrically connected to each other. The output end of each first electric push rod (107) is fixedly connected to a clamping block (108).

3. The welding apparatus for headphone production and assembly according to claim 1, characterized in that: The wire clamping assembly includes several second electric push rods (202) fixed to a fixed plate (201) and wire clamping grooves (203); each second electric push rod (202) is fixed with an ohmic wire clamping groove (203).

4. A welding apparatus for headphone production and assembly according to claim 3, characterized in that: The heat shrink kit assembly includes a second movable plate (204) connected to a fixed plate (201); the fixed plate (201) is connected to the second movable plate (204) which can move left and right; a second fixed ring (205) is fixedly connected to the second movable plate (204); a protective cover (206) is fixedly connected to the left side of the second fixed ring (205); a plurality of heaters (207) are arrayed inside the protective cover (206); a slot (20501) is opened on the left side of the second fixed ring (205); the slot (20501) is located inside the protective cover (206); and the protective sleeve (5) is inserted into the slot (20501).

5. A welding apparatus for headphone production and assembly according to claim 4, characterized in that: It also includes a limiting ring (208) fixed inside the protective cover (206); the limiting ring (208) is fixed on the left side of the protective cover (206); the inner side of the limiting ring (208) is fitted with the protective sleeve (5) with a clearance.

6. A welding apparatus for headphone production and assembly according to claim 1, characterized in that: Two symmetrically positioned limit blocks (2002) are fixed to the lower side of the welding head (2001); the limit blocks (2002) are clearance-fitted with the round hole plug (4).

7. A welding apparatus for headphone production and assembly according to claim 4, characterized in that: The left side of the card slot (20501) is open.

8. A welding apparatus for headphone production and assembly according to claim 2, characterized in that: Electrode plates are provided inside the clamping block (108).

9. A welding apparatus for headphone production and assembly according to claim 5, characterized in that: The protective cover (206) is made of flame-retardant epoxy resin.

10. A welding apparatus for headphone production and assembly according to claim 4, characterized in that: It also includes a rotating wheel (209) and a pawl (210) connected in the second fixed ring (205); several are rotatably connected in the second fixed ring (205); a rubber ring (20901) is fixed to the outside of each rotating wheel (209); the rubber ring (20901) is in contact with the outer surface of the wire (3); a connecting part (20902) is provided on each rotating wheel (209); a ratchet (20903) is provided on each connecting part (20902); several pawls (210) are rotatably connected in each second fixed ring (205) by a torsion spring; each ratchet (20903) is in contact with the corresponding pawl (210); based on the front-to-back view, the pawl (210) can only rotate clockwise.

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