A precision drawing device for enameled wire based on a composite mold adjustment structure

Abstract

This invention relates to the field of enameled wire drawing technology, specifically to a precision enameled wire drawing device based on a composite mold adjustment structure. The device includes a frame and a drawing mold mechanism mounted on the frame. The drawing mold mechanism includes a support base fixedly installed in a water tank at the top of the frame. The support base houses a plurality of circumferentially evenly distributed drawing molds, with the aperture of each drawing mold gradually increasing in a clockwise direction. When drawing enameled wire, this invention uses a drive unit to rotate a switching component at equal intervals. The switching component then moves the top drawing molds back and forth at equal intervals, enabling rapid switching of the drawing molds in the drawing groove. This allows drawing molds with different apertures to be moved into the drawing groove, facilitating the drawing of enameled wires of varying thicknesses without requiring individual mold replacements, thus improving the efficiency of mold changing.

Description

Technical Field

[0001] This invention relates to the field of enameled wire drawing technology, specifically to a precision enameled wire drawing device based on a composite mold adjustment structure. Background Technology

[0002] Enameled wire is a major type of winding wire, consisting of a conductor and an insulation layer. The bare wire is annealed and softened, then coated with enamel multiple times and baked. Enameled wire is generally processed using a wire drawing process. Wire drawing refers to a processing method in which the wire undergoes plastic deformation under a certain tensile force as it passes through a die, resulting in a reduction in cross-sectional area and an increase in length.

[0003] Common wire drawing equipment generally includes a wire drawing die mechanism and rollers located on the left and right sides of the mechanism to move the bare wire. The rollers drive the bare wire through the wire drawing die mechanism, reducing the cross-sectional area and increasing the length of the bare wire. The wire drawing die mechanism consists of a die base and wire drawing dies mounted on the die base. A die base usually has multiple wire drawing dies with different apertures, which allows for continuous drawing of the bare wire. However, the above-mentioned wire drawing equipment still has the following shortcomings in use: 1. The existing wire drawing dies are all fixed on the die base individually. When it is necessary to replace wire drawing dies with different apertures, the wire drawing dies need to be removed from the die base one by one for replacement. Replacing multiple wire drawing dies at the same time takes a long time and affects the efficiency of wire drawing die replacement; 2. When replacing wire drawing dies, it is necessary to determine the aperture of the wire drawing die to be replaced one by one to ensure that the aperture of the replaced wire drawing die changes continuously. This avoids the situation of wire breakage due to discontinuous aperture. Observing and determining the aperture of each wire drawing die will also take a lot of time and affect the efficiency of wire drawing die replacement. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a precision drawing device for enameled wire based on a composite mold adjustment structure, comprising a frame and a drawing mold mechanism mounted on the frame. The drawing mold mechanism includes a support base fixedly mounted in a water tank at the top of the frame. The support base has several drawing molds evenly distributed circumferentially installed inside it. The aperture of the several drawing molds gradually increases in a clockwise direction. The top of the support base has several drawing grooves that expose the central hole of the drawing mold and are evenly distributed front and back.

[0005] The support base is equipped with a switching component, a driving unit, and a locking component for limiting the forward and backward movement of the top wire drawing die, and an indicating unit for indicating the wire drawing die located at the foremost wire drawing groove is installed on the right side of the support base.

[0006] In one possible implementation, two adjacent wire drawing dies are staggered left and right, and the distance between two adjacent wire drawing dies is equal to the distance between two adjacent wire drawing grooves. The unit distance that the uppermost wire drawing die moves back and forth is equal to the distance between two adjacent wire drawing dies.

[0007] In one possible implementation, the switching assembly includes a rotating shaft rotatably mounted inside a support and distributed front to back. Two sets of sprockets are fixedly mounted on the rotating shaft, each set containing two sprockets. Chains are connected to the front and rear corresponding sprockets for transmission. The wire drawing die is fixedly connected between the corresponding two chains.

[0008] In one possible implementation, a plurality of equally spaced support rollers are fixedly connected to the side of the chain away from the corresponding wire drawing die, and a guide groove is provided on the inner wall of the support base on the side of the chain away from the corresponding wire drawing die, and the support rollers are slidably installed in the corresponding guide groove.

[0009] In one possible implementation, the locking assembly includes movable plates that are slidably mounted on the support base and are symmetrically distributed on both sides. A plurality of return springs that are equidistantly distributed front and back are fixedly connected between the two movable plates. A plurality of positioning pins that are equidistantly distributed front and back are fixedly connected to the opposite sides of the two movable plates. The wire drawing die has a positioning hole on the side near the corresponding movable plate. The opening of the positioning hole is provided with a flared mouth. The positioning pins are inserted into the corresponding positioning holes. The support base is also provided with an unlocking unit for unlocking.

[0010] In one possible implementation, the unlocking unit includes several fixed blocks fixedly connected to opposite sides of two movable plates and equidistantly distributed front and back. Each fixed block has a guide groove, and two corresponding guide grooves on the left and right sides form a figure-eight shape with the larger end facing forward. A pull plate located above the movable plates is slidably mounted on the support base. The bottom of the pull plate is rotatably connected to several guide rods corresponding to the fixed blocks. The guide rods are slidably connected to the corresponding guide grooves. The front end of the pull plate slides through to the front of the support base.

[0011] In one possible implementation, the drive unit includes a cover fixedly mounted on the right side of the support base, a knob rotatably mounted on the right side of the cover, the knob being driven by a grooved wheel mechanism rotatably mounted inside the cover and a rotating shaft on the front side, a pointer being fixedly connected to the outer ring wall of the knob, and a positioning block located in front of the knob being fixedly connected to the right side of the cover.

[0012] In one possible implementation, the indicating unit includes a rotating rod coaxially fixedly connected to the right end of a front rotating shaft. The right end of the rotating rod rotates through to the right side of the cover and is then fixedly connected to a gear. A gear ring is rotatably connected to the right side of the cover. The outer side of the gear meshes with the inner side of the gear ring. A turntable is fixedly connected to the right side of the gear ring. Several circumferentially distributed scale lines are provided on the right side of the turntable. A positioning block two located on the top of the turntable is fixedly connected to the right side of the cover.

[0013] The beneficial effects of the present invention are as follows: 1. When drawing enameled wire, the present invention drives the switching component to rotate at equal intervals through the drive unit. Then, the switching component drives the drawing die at the top to move back and forth at equal intervals, which can quickly switch the drawing die in the drawing groove and move the drawing die with different aperture to the drawing groove. This makes it easier to adapt to the drawing requirements of enameled wire of different thicknesses without having to replace them one by one, thus improving the efficiency of drawing die replacement.

[0014] 2. After switching the wire drawing die, the present invention uses a locking component to lock multiple wire drawing dies simultaneously, which can prevent the wire drawing die from moving during the wire drawing process, reduce the occurrence of wire breakage, and eliminate the need to fix each wire drawing die individually, making the operation faster and more convenient.

[0015] 3. The present invention uses an indicator unit to indicate the wire drawing die located at the frontmost wire drawing groove. When the switching component moves the wire drawing die back and forth at equal intervals, the rotating shaft drives the rotating rod to rotate synchronously. The rotating rod drives the turntable to rotate through the transmission of gears and gear rings. Whenever the wire drawing die moves a unit distance, the turntable rotates synchronously at a certain angle, so that the positioning block two points to the corresponding scale line. The scale line indicates the diameter of the wire drawing die, which facilitates quick switching to the required wire drawing die. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the wire drawing die mechanism of the present invention.

[0018] Figure 3 This is a cross-sectional view of the front side of the wire drawing die mechanism of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the switching component of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the cover of the present invention.

[0021] Figure 6 This is a partial cross-sectional view of the support base of the present invention.

[0022] Figure 7 This is a three-dimensional structural schematic diagram of the indicator unit of the present invention.

[0023] Figure 8 This is a partial diagram of the locking component of the present invention.

[0024] In the diagram: 1. Frame; 2. Wire drawing die mechanism; 21. Support base; 211. Drain outlet; 22. Wire drawing die; 221. Positioning hole; 222. Trumpet mouth; 23. Wire drawing groove; 24. Switching component; 241. Rotating shaft; 242. Sprocket; 243. Chain; 244. Support roller; 245. Guide groove; 25. Locking component; 251. Movable plate; 252. Return spring; 253. Positioning post; 254. Fixing block; 255. Guide groove; 256. Pull plate; 257. Guide rod; 26. Drive unit; 261. Cover; 262. Knob; 263. Grooved wheel mechanism; 264. Pointer; 265. Positioning block one; 27. Indicating unit; 271. Rotating rod; 272. Gear; 273. Gear ring; 274. Turntable; 275. Scale line; 276. Positioning block two. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Please see Figure 1 - Figure 8 A precision drawing device for enameled wire based on a composite mold adjustment structure includes a frame 1 and a drawing mold mechanism 2 installed on the frame 1. The drawing mold mechanism 2 includes a support base 21 fixedly installed in a water tank at the top of the frame 1. The support base 21 has several drawing molds 22 evenly distributed in the circumferential direction installed inside. The diameter of the holes of the several drawing molds 22 gradually increases in the clockwise direction. The top of the support base 21 is provided with several drawing grooves 23 that expose the center holes of the drawing molds 22 and are evenly distributed in the front and back. The bottom of the support base 21 is also provided with a drain outlet 211. During the drawing process, it is necessary to spray lubricating fluid to cool the drawing molds 22. The drain outlet 211 facilitates the downward flow of lubricating fluid in the support base 21.

[0027] The support base 21 is equipped with a switching component 24 for driving the wire drawing die 22 at the top to move back and forth at equal distances, a driving unit 26, and a locking component 25 for limiting the back and forth movement of the wire drawing die 22. The right side of the support base 21 is equipped with an indicator unit 27 for indicating the wire drawing die 22 located at the foremost wire drawing groove 23.

[0028] In practical use, when switching the wire drawing die 22, first release the locking component 25 from locking the wire drawing die 22, and then drive the switching component 24 intermittently through the driving unit 26. The switching component 24 drives the top wire drawing die 22 to move forward or backward at equal intervals, switching the wire drawing dies 22 with different apertures to the corresponding wire drawing grooves 23. During the switching process, the indicator unit 27 indicates the aperture of the wire drawing die 22 located in the foremost wire drawing groove 23, and the aperture of the wire drawing die 22 in the rear wire drawing grooves 23 increases sequentially. Once the aperture of the wire drawing die 22 located in the foremost wire drawing groove 23 is determined, the apertures of the wire drawing dies 22 in the rear wire drawing grooves 23 are also determined, which facilitates quick switching to the required wire drawing die 22. After the switching is completed, the locking component 25 is used to lock the wire drawing die 22 to prevent the wire drawing die 22 from moving.

[0029] During wire drawing, the enameled wire is passed from left to right through the drawing die 22 in the last drawing groove 23. Then, the enameled wire is wound around the pulleys on both sides of the drawing die mechanism 2, so that the end of the enameled wire returns to the left side of the support 21. After that, the above steps are repeated to pass through the drawing dies 22 with different apertures in sequence. The pulleys drive the enameled wire to wind at a uniform speed, so that the enameled wire passes through the drawing die 22 from left to right. The enameled wire passes through the drawing dies 22 with apertures that change from large to small in sequence. The enameled wire is drawn and shaped by the drawing die 22 to process it into a suitable diameter.

[0030] Please see Figure 2 , Figure 4 The two adjacent wire drawing dies 22 are staggered and the distance between the two adjacent wire drawing dies 22 is equal to the distance between the two adjacent wire drawing grooves 23. The unit distance that the uppermost wire drawing die 22 moves back and forth is equal to the distance between the two adjacent wire drawing dies 22.

[0031] In practical use, by staggering the two adjacent wire drawing dies 22, the distance between the center holes of the two adjacent wire drawing dies 22 can be reduced. Compared with the wire drawing dies 22 arranged side by side, the staggered arrangement can accommodate more wire drawing dies 22 in the same length of support base 21, so that the enameled wire can be drawn through more wire drawing dies 22, thereby improving the wire drawing efficiency.

[0032] When the switching component 24 moves the top drawing die 22 forward, the drawing die 22 can move from the next drawing groove 23 to the previous drawing groove 23. At the same time, the drawing die 22 hidden in the support base 21 will be added to the last drawing groove 23, making the diameter of the drawing die 22 in the drawing groove 23 larger. Similarly, when the switching component 24 moves the top drawing die 22 backward, the drawing die 22 can move from the previous drawing groove 23 to the next drawing groove 23. At the same time, the drawing die 22 hidden in the support base 21 will be added to the foremost drawing groove 23, making the diameter of the drawing groove 23 smaller. It should be noted that when the wire drawing die 22 in the foremost wire drawing groove 23 is already at its minimum diameter, moving the wire drawing die 22 further backward will switch the diameter of the wire drawing die 22 in the foremost wire drawing groove 23 to the maximum diameter. Similarly, when the wire drawing die 22 in the last wire drawing groove 23 is already at its maximum diameter, moving the wire drawing die 22 further forward will switch the diameter of the wire drawing die 22 in the last wire drawing groove 23 to the minimum diameter. Therefore, when the wire drawing die 22 in the foremost wire drawing groove 23 is already at its minimum diameter or the wire drawing die 22 in the last wire drawing groove 23 is already at its maximum diameter, the switching to a smaller or larger diameter will not continue.

[0033] Please see Figure 3 , Figure 4 and Figure 6 The switching component 24 includes a rotating shaft 241 rotatably mounted inside the support base 21 and distributed front to back. Two sets of sprockets 242 are fixedly mounted on the rotating shaft 241 and distributed left to right. There are two sprockets 242 in each set. The two corresponding sprockets 242 are connected to a chain 243 for transmission. The wire drawing die 22 is fixedly connected between the two corresponding chains 243.

[0034] In practical use, the sprocket 242 is driven to rotate by the rotating shaft 241, and then the sprocket 242 drives the chain 243 to move. The chain 243 drives the wire drawing die 22 to move forward or backward, thereby adjusting the diameter of the wire drawing die 22 in the wire drawing groove 23. By setting the chain 243 on both the left and right sides of the wire drawing die 22, it can be pulled from both the left and right sides at the same time, improving the stability of the wire drawing die 22 when it moves.

[0035] Please see Figure 3 and Figure 4 A plurality of support rollers 244 are fixedly connected to the side of the chain 243 away from the corresponding wire drawing die 22. A guide groove 245 is provided on the inner wall of the support base 21 on the side of the chain 243 away from the corresponding wire drawing die 22. The support rollers 244 are slidably installed in the corresponding guide groove 245.

[0036] In practical use, as the chain 243 drives the wire drawing die 22 to move, the chain 243 will also drive the support roller 244 to move together. At this time, the guide groove 245 is used to guide the support roller 244, so that the support roller 244 moves along the guide groove 245. The support roller 244 can guide and support the chain 243, which can improve the stability of the chain 243 when moving, and thus improve the stability of the wire drawing die 22 when moving.

[0037] Please see Figure 2 , Figure 3 and Figure 8 The locking assembly 25 includes movable plates 251 that are slidably mounted on the support base 21 and are symmetrically distributed on the left and right. A number of return springs 252 that are equidistantly distributed in front and behind are fixedly connected between the two movable plates 251. A number of positioning pins 253 that are equidistantly distributed in front and behind are fixedly connected to the opposite sides of the two movable plates 251. The wire drawing die 22 has a positioning hole 221 on the side near the corresponding movable plate 251. The opening of the positioning hole 221 is provided with a flared mouth 222. The positioning pins 253 are inserted into the corresponding positioning holes 221. The support base 21 is also provided with an unlocking unit for unlocking.

[0038] In practical use, in the initial state, the return spring 252 is in a compressed state. The rebound force of the return spring 252 pushes the movable plates 251 on the left and right sides away from each other, so that the positioning pin 253 can be inserted into the corresponding positioning hole 221. The positioning pin 253 locks the wire drawing die 22, preventing the wire drawing die 22 from moving back and forth, improving the stability of the wire drawing process and reducing the occurrence of wire breakage. By setting a flared mouth 222 at the opening of the positioning hole 221, the flared mouth 222 can guide the positioning pin 253, avoiding the situation where the positioning pin 253 cannot be inserted into the positioning hole 221 due to incomplete alignment with the positioning hole 221. This facilitates the accurate insertion of the positioning pin 253 into the corresponding positioning hole 221.

[0039] Please see Figure 2 , Figure 3 and Figure 8 The unlocking unit includes several fixed blocks 254 fixedly connected to the opposite sides of the two movable plates 251 and distributed equidistantly in front and behind. The fixed blocks 254 are provided with guide grooves 255. The two corresponding guide grooves 255 on the left and right sides form a figure-eight shape with the larger end facing forward. A pull plate 256 located above the movable plates 251 is slidably installed on the support base 21. The bottom of the pull plate 256 is rotatably connected to several guide rods 257 that correspond one-to-one with the fixed blocks 254. The guide rods 257 are slidably connected to the corresponding guide grooves 255. The front end of the pull plate 256 slides through to the front of the support base 21.

[0040] In practical use, before switching the wire drawing die 22, it needs to be unlocked first. When unlocking, by pulling the pull plate 256 forward, the guide rod 257 pushes the fixed block 254 forward. Due to the guidance of the guide groove 255, when the fixed block 254 is pushed by the guide rod 257, it will drive the two movable plates 251 on the left and right to move closer to each other, so that the return spring 252 is further compressed and contracted. At this time, the end of the positioning post 253 will separate from the positioning hole 221 under the action of the movable plate 251, releasing the lock on the wire drawing die 22, so that the wire drawing die 22 can move back and forth for switching.

[0041] After the wire drawing die 22 is switched, the pull plate 256 is released. At this time, the rebound force of the return spring 252 pushes the movable plates 251 on the left and right sides away from each other, so that the positioning pin 253 can be re-inserted into the corresponding positioning hole 221, and the wire drawing die 22 is locked again. When the movable plates 251 move away from each other, the fixing block 254 pushes the guide rod 257 and the pull plate 256 to move backward and reset.

[0042] Please see Figure 2 , Figure 3 , Figure 5 and Figure 6 The drive unit 26 includes a cover 261 fixedly installed on the right side of the support base 21. A knob 262 is rotatably installed on the right side of the cover 261. The knob 262 is connected to the rotating shaft 241 on the front side through a grooved wheel mechanism 263 rotatably installed on the inner side of the cover 261. A pointer 264 is fixedly connected to the outer ring wall of the knob 262. A positioning block 265 located in front of the knob 262 is fixedly connected to the right side of the cover 261.

[0043] In practical use, the knob 262 drives the front rotating shaft 241 to rotate intermittently through the transmission of the grooved wheel mechanism 263, causing the chain 243 to drive the wire drawing die 22 to move. Each rotation of the knob 262 causes the top wire drawing die 22 to move forward or backward by one unit distance, thus achieving evenly spaced forward and backward movement of the wire drawing die 22. This facilitates accurate switching of the wire drawing die 22 and avoids misalignment between the center hole of the wire drawing die 22 and the wire drawing groove 23 due to insufficient movement of the wire drawing die 22. The pointer 264 and... The positioning blocks 265 work together to indicate the number of rotations of the knob 262. When the knob 262 rotates, it drives the pointer 264 to rotate as well. When the pointer 264 aligns with the positioning blocks 265 again, it means that the knob 262 has completed one full rotation, thus preventing the knob 262 from not rotating to the correct position. By using the cover 261 to shield the Geneva mechanism 263, lubricant and debris are prevented from adhering to the Geneva mechanism 263 during the wire drawing process, which would affect the transmission of the Geneva mechanism 263 and ensure the smooth operation of the Geneva mechanism 263.

[0044] Please see Figure 2 - Figure 7 The indicating unit 27 includes a rotating rod 271 coaxially fixedly connected to the right end of the front rotating shaft 241. The right end of the rotating rod 271 rotates through to the right side of the cover 261 and is fixedly connected to a gear 272. The right side of the cover 261 is rotatably connected to a gear ring 273. The outer side of the gear 272 meshes with the inner side of the gear ring 273. The right side of the gear ring 273 is fixedly connected to a turntable 274. The right side of the turntable 274 is provided with several circumferentially distributed scale lines 275. The right side of the cover 261 is fixedly connected to a positioning block 276 located on the top of the turntable 274.

[0045] In practical use, when the front rotating shaft 241 rotates, it drives the rotating rod 271 to rotate as well. The rotating rod 271 drives the gear 272 to rotate, which in turn drives the gear ring 273 and the turntable 274 to rotate. Since the rotating shaft 241 rotates at a fixed angle under the drive of the Geneva mechanism 263, the turntable 274 also rotates at a fixed angle after being transmitted through the gear 272 and the gear ring 273. Each time the rotating shaft 241 rotates, the turntable 274 drives the scale line 275 to rotate. At a fixed angle, different scale lines 275 are moved to the positioning block 276. The positioning block 276 indicates the scale line 275 at the top of the turntable 274. The value displayed by the scale line 275 at the top of the turntable 274 is the size of the hole diameter of the wire drawing die 22 in the front wire drawing groove 23. This makes it easy to quickly switch the required wire drawing die 22 to the corresponding wire drawing groove 23 without having to observe the hole diameter of the wire drawing die 22 one by one, making it faster and more convenient to use.

[0046] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A precision drawing device for enameled wire based on a composite mold adjustment structure, characterized in that: The device includes a frame (1) and a wire drawing die mechanism (2) mounted on the frame (1). The wire drawing die mechanism (2) includes a support base (21) fixedly mounted in a water tank at the top of the frame (1). The support base (21) is equipped with a plurality of wire drawing dies (22) evenly distributed in the circumferential direction. The aperture of the plurality of wire drawing dies (22) gradually increases in the clockwise direction. The top of the support base (21) is provided with a plurality of wire drawing grooves (23) that expose the center hole of the wire drawing die (22) and are evenly distributed in the front and back. The support base (21) is equipped with a switching component (24) for driving the wire drawing die (22) at the top to move back and forth at equal distances, a driving unit (26), and a locking component (25) for limiting the back and forth movement of the wire drawing die (22). The right side of the support base (21) is equipped with an indicator unit (27) for indicating the wire drawing die (22) located at the foremost wire drawing groove (23). The switching component (24) includes a rotating shaft (241) rotatably mounted inside the support base (21) and distributed front and back. Two sets of sprockets (242) are fixedly mounted on the rotating shaft (241) and distributed left and right. There are two sprockets (242) in each set. The two corresponding sprockets (242) are connected to a chain (243) for transmission. The wire drawing die (22) is fixedly connected between the two corresponding chains (243). The drive unit (26) includes a cover (261) fixedly installed on the right side of the support base (21). A knob (262) is rotatably installed on the right side of the cover (261). The knob (262) is connected to the rotating shaft (241) on the front side through a grooved wheel mechanism (263) rotatably installed on the inner side of the cover (261). A pointer (264) is fixedly connected to the outer ring wall of the knob (262). A positioning block (265) located in front of the knob (262) is fixedly connected to the right side of the cover (261). The indicating unit (27) includes a rotating rod (271) coaxially fixedly connected to the right end of the front rotating shaft (241). The right end of the rotating rod (271) rotates through to the right side of the cover (261) and is fixedly connected to a gear (272). The right side of the cover (261) is rotatably connected to a gear ring (273). The outer side of the gear (272) meshes with the inner side of the gear ring (273). The right side of the gear ring (273) is fixedly connected to a turntable (274). The right side of the turntable (274) is provided with several circumferentially distributed scale lines (275). The right side of the cover (261) is fixedly connected to a positioning block two (276) located on the top of the turntable (274).

2. The precision drawing equipment for enameled wire based on a composite mold adjustment structure according to claim 1, characterized in that: The two adjacent wire drawing dies (22) are staggered and the distance between the two adjacent wire drawing dies (22) is equal to the distance between the two adjacent wire drawing grooves (23). The unit distance that the uppermost wire drawing die (22) moves back and forth is equal to the distance between the two adjacent wire drawing dies (22).

3. The precision drawing equipment for enameled wire based on a composite mold adjustment structure according to claim 1, characterized in that: The chain (243) is fixedly connected to a plurality of equally spaced support rollers (244) on the side away from the corresponding wire drawing die (22). The inner wall of the support base (21) is provided with a guide groove (245) located on the side of the chain (243) away from the corresponding wire drawing die (22). The support rollers (244) are slidably installed in the corresponding guide grooves (245).

4. The precision drawing equipment for enameled wire based on a composite mold adjustment structure according to claim 1, characterized in that: The locking assembly (25) includes movable plates (251) that are slidably mounted on the support base (21) and symmetrically distributed on the left and right. A number of return springs (252) are fixedly connected between the two movable plates (251) and are distributed at equal intervals in front and behind. A number of positioning pins (253) are fixedly connected on the opposite sides of the two movable plates (251) and are distributed at equal intervals in front and behind. The wire drawing die (22) has a positioning hole (221) on the side close to the corresponding movable plate (251). The opening of the positioning hole (221) is provided with a flared mouth (222). The positioning pins (253) are inserted into the corresponding positioning holes (221). The support base (21) is also provided with an unlocking unit for unlocking.

5. The precision drawing equipment for enameled wire based on a composite mold adjustment structure according to claim 4, characterized in that: The unlocking unit includes several fixed blocks (254) fixedly connected to the opposite sides of the two movable plates (251) and distributed equidistantly in front and behind. The fixed blocks (254) are provided with guide grooves (255). The two guide grooves (255) corresponding to the left and right sides form a figure-eight shape with the larger end facing forward. A pull plate (256) located above the movable plates (251) is slidably installed on the support base (21). The bottom of the pull plate (256) is rotatably connected to several guide rods (257) corresponding to the fixed blocks (254). The guide rods (257) are slidably connected to the corresponding guide grooves (255). The front end of the pull plate (256) slides through to the front of the support base (21).

Images