Accurate enameled wire drawing equipment based on composite die adjusting structure

Abstract

The invention relates to the technical field of enamelled wire drawing, in particular to enamelled wire accurate drawing equipment based on a composite die adjusting structure, which comprises a rack and a wire drawing die mechanism mounted on the rack, and the wire drawing die mechanism comprises a support seat fixedly mounted in a water tank at the top of the rack; a plurality of wire drawing dies which are uniformly distributed in the circumferential direction are mounted in the supporting seat, and the apertures of the plurality of wire drawing dies are gradually increased in the clockwise direction. When an enameled wire is subjected to wire drawing, the switching assembly is driven by the driving unit to circularly rotate at equal intervals, then the switching assembly drives the wire drawing die on the top to move front and back at equal intervals, the wire drawing dies in the wire drawing groove can be rapidly switched, and the wire drawing dies with different hole diameters are moved into the wire drawing groove; the wire drawing requirements of enameled wires with different thicknesses can be met conveniently, the enameled wires do not need to be replaced one by one, and the replacement efficiency of the wire drawing die is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of enameled wire drawing, and in particular to an enameled wire precision drawing device based on a composite die adjustment structure. Background Art

[0002] Enameled wire, a primary type of winding wire, consists of a conductor and an insulating layer. The bare wire is softened by annealing, then repeatedly coated and baked. This process is typically produced using wire drawing, a process in which the wire passes through a die under a certain tensile force, undergoing plastic deformation to reduce its cross-sectional area and increase its length.

[0003] Common wire drawing equipment generally consists of a drawing die mechanism and pulleys located on either side of the die mechanism to move the bare wire. The pulleys drive the bare wire through the drawing die mechanism, reducing its cross-sectional area and increasing its length. The drawing die mechanism consists of a die base and a drawing die mounted on it. A single die base is typically equipped with multiple drawing dies of varying apertures, enabling continuous drawing of the bare wire. However, the above-mentioned wire drawing equipment still has the following deficiencies during use: 1. The existing wire drawing dies are all fixed on the die base individually. When replacing wire drawing dies with different apertures, the wire drawing dies need to be removed from the die base one by one for replacement. It takes a long time to replace multiple wire drawing dies together, which affects the efficiency of replacing the wire drawing dies; 2. When replacing the wire drawing dies, it is necessary to determine the aperture of the wire drawing dies to be replaced one by one to ensure that the aperture of the replaced wire drawing dies changes continuously to avoid the situation where the bare wire is broken due to the discontinuous aperture. The aperture of each wire drawing die needs to be observed and determined, which also takes a lot of time, affecting the efficiency of replacing the wire drawing dies. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an enameled wire precision drawing equipment based on a composite die adjustment structure, including a frame and a drawing die mechanism installed on the frame, the drawing die mechanism including a support seat fixedly installed in a water tank on the top of the frame, a plurality of circumferentially evenly distributed drawing dies are installed inside the support seat, the apertures of the plurality of drawing dies gradually increase in a clockwise direction, and a plurality of drawing grooves are provided on the top of the support seat for exposing the center hole of the drawing die and equidistantly distributed front and back.

[0005] The support seat is equipped with a switching component for driving the top drawing die to move back and forth at equal intervals, a driving unit, and a locking component for limiting the forward and backward movement of the drawing die. The right side of the support seat is equipped with an indicating unit for indicating the drawing die located at the frontmost drawing groove.

[0006] In one possible implementation, two adjacent drawing dies are staggered left and right and the distance between the two adjacent drawing dies is equal to the distance between two adjacent drawing grooves, and the unit distance of the top drawing die moving forward and backward is equal to the distance between the two adjacent drawing dies.

[0007] In one possible implementation, the switching assembly includes a rotating shaft rotatably mounted inside a support seat and distributed front and back, two groups of sprockets distributed left and right are fixedly mounted on the rotating shaft, the number of sprockets in each group is two, and the two corresponding front and rear sprockets are commonly connected with a chain for transmission, and 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 drawing die, and a guide groove is provided on the inner wall of the support seat on the side of the chain away from the corresponding drawing die, and the support rollers are slidably installed in the corresponding guide grooves.

[0009] In one possible implementation, the locking assembly includes a movable plate that is slidably installed on a support seat and is symmetrically distributed on the left and right sides. A number of return springs that are evenly distributed front and back are fixedly connected between the left and right movable plates. A number of positioning columns that are evenly distributed front and back are fixedly connected to the opposite sides of the left and right movable plates. A positioning hole is provided on the side of the wire drawing die close to the corresponding movable plate. A trumpet mouth is provided at the opening of the positioning hole. The positioning column is plugged into the corresponding positioning hole. An unlocking unit for releasing the lock is also provided on the support seat.

[0010] In one possible implementation, the unlocking unit includes a plurality of fixed blocks fixedly connected to opposite sides of the left and right movable plates and equidistantly distributed front to back, a guide groove being provided on the fixed block, and the two corresponding guide grooves on the left and right forming an eight-shaped shape with the wide end facing forward, a pull plate located above the movable plate is slidably installed on the support seat, the bottom of the pull plate is rotatably connected to a plurality of guide rods corresponding to the fixed blocks one by one, the guide rods are slidably connected to the corresponding guide grooves, and the front end of the pull plate slides through to the front of the support seat.

[0011] In one possible implementation, the drive unit includes a block cover fixedly mounted on the right side of the support seat, a knob is rotatably mounted on the right side of the block cover, the knob is connected to the front shaft by rotating a groove wheel mechanism mounted on the inner side of the block cover, a pointer is fixedly connected to the outer ring wall of the knob, and a positioning block 1 located in front of the knob is fixedly connected to the right side of the block cover.

[0012] In one possible implementation, the indicating unit includes a rotating rod coaxially fixedly connected to the right end of the front rotating shaft, the right end of the rotating rod rotates through the right side of the block cover and is fixedly connected to a gear, the right side of the block cover is rotatably connected to a ring gear, the outer side of the gear is meshed with the inner side of the ring gear, the right side of the ring gear is fixedly connected to a turntable, a plurality of circumferentially distributed scale lines are provided on the right side of the turntable, and the right side of the block cover is fixedly connected to a positioning block 2 located at the top of the turntable.

[0013] The beneficial effects of the present invention are as follows: 1. When drawing the enameled wire, the present invention drives the switching component to rotate cyclically at equal intervals through the driving unit, and then the switching component drives the top drawing die to move back and forth at equal intervals, which can quickly switch the drawing dies in the drawing slot and move the drawing dies with different apertures into the drawing slot, so as to adapt to the drawing needs of enameled wires of different thicknesses. There is no need to replace them one by one, thereby improving the replacement efficiency of the drawing dies.

[0014] 2. After completing the switching of the wire drawing dies, the present invention uses a locking assembly to lock multiple wire drawing dies at the same time, which can prevent the wire drawing dies from moving during the wire drawing process and reduce the occurrence of wire breakage. In addition, there is no need to fix the wire drawing dies one by one, and the operation is faster and more convenient.

[0015] 3. The present invention utilizes an indicating unit to indicate the drawing die located at the frontmost drawing groove. When the switching assembly drives the drawing die to move back and forth at equal intervals, the rotating shaft drives the rotating rod to rotate synchronously, and the rotating rod drives the turntable to rotate through the transmission of the gear and the gear ring. Whenever the drawing die moves a unit distance, the turntable rotates a certain angle synchronously so that the positioning block 2 points to the corresponding scale line, and the scale line is used to indicate the aperture of the drawing die, which facilitates rapid switching to the required drawing die. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

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

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

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the switching component of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the blocking cover of the present invention.

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

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the indicating unit of the present invention.

[0023] Figure 8 1 is an isolated view of the locking assembly of the present invention.

[0024] In the figure: 1. frame; 2. drawing die mechanism; 21. support seat; 211. water leakage port; 22. drawing die; 221. positioning hole; 222. bell mouth; 23. drawing groove; 24. switching assembly; 241. rotating shaft; 242. sprocket; 243. chain; 244. support roller; 245. guide groove; 25. locking assembly; 251. movable plate; 252. return spring; 253. positioning column; 254. fixing block; 255. guide groove; 256. pulling plate; 257. guide rod; 26. driving unit; 261. blocking cover; 262. knob; 263. groove wheel mechanism; 264. pointer; 265. positioning block 1; 27. indicating unit; 271. rotating rod; 272. gear; 273. gear ring; 274. turntable; 275. scale line; 276. positioning block 2. DETAILED DESCRIPTION

[0025] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described below, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] See also Figure 1 - Figure 8 A precise enameled wire drawing device based on a composite die adjustment structure includes a frame 1 and a drawing die mechanism 2 installed on the frame 1. The drawing die mechanism 2 includes a support base 21 fixedly installed in a water tank on the top of the frame 1. A plurality of drawing dies 22 uniformly distributed in the circumferential direction are installed inside the support base 21. The apertures of the plurality of drawing dies 22 gradually increase in the clockwise direction. The top of the support base 21 is provided with a plurality of drawing grooves 23 equidistantly distributed front and back for exposing the center hole of the drawing die 22. A water leakage port 211 is also provided at the bottom of the support base 21. During the drawing process, the drawing die 22 needs to be sprayed with lubricating liquid for cooling. The water leakage port 211 facilitates the downward flow of the lubricating liquid in the support base 21. The support seat 21 is equipped with a switching component 24 for driving the top drawing die 22 to move equidistantly back and forth, a driving unit 26, and a locking component 25 for limiting the forward and backward movement of the drawing die 22. The right side of the support seat 21 is equipped with an indicating unit 27 for indicating the drawing die 22 located at the frontmost drawing groove 23.

[0027] During specific use, when the wire drawing die 22 is to be switched, the locking component 25 is first released to lock the wire drawing die 22, and then the switching component 24 is intermittently driven by the driving unit 26, and the switching component 24 is used to drive the top wire drawing die 22 to move forward or backward at equal intervals, and the wire drawing dies 22 with different apertures are switched to the corresponding wire drawing grooves 23. During the switching process, the indicating unit 27 is used to indicate the aperture of the wire drawing die 22 located in the frontmost wire drawing groove 23, and the aperture of the wire drawing die 22 in the rear wire drawing groove 23 increases successively. When the aperture of the wire drawing die 22 located at the frontmost wire drawing groove 23 is determined, the apertures of the wire drawing dies 22 in several rear wire drawing grooves 23 are determined accordingly, which is convenient for quickly 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.

[0028] When drawing, the enameled wire is passed from left to right through the drawing die 22 in the rearmost drawing slot 23, and then the enameled wire is wrapped around the tower wheels on the left and right sides of the drawing die mechanism 2, so that the end of the enameled wire returns to the left side of the support seat 21, and then the above steps are repeated to pass through the drawing dies 22 with different apertures in turn. The tower wheel drives the enameled wire to be wound at a uniform speed, so that the enameled wire passes through the drawing die 22 from left to right, and the enameled wire passes through the drawing dies 22 with apertures changing from large to small in turn, and the enameled wire is drawn and formed by the drawing die 22 to be processed into a suitable diameter.

[0029] See also Figure 2 、 Figure 4 The two adjacent drawing dies 22 are staggered left and right and the distance between the two adjacent drawing dies 22 is equal to the distance between the two adjacent drawing grooves 23 , and the unit distance of the top drawing die 22 moving forward and backward is equal to the distance between the two adjacent drawing dies 22 .

[0030] During specific use, by staggering the two adjacent drawing dies 22 left and right, the distance between the center holes of the two adjacent drawing dies 22 can be reduced. Compared with the drawing dies 22 distributed side by side in the front and back, the staggered distribution method can accommodate more drawing dies 22 in the support seat 21 of the same length, so that the enameled wire can be drawn through more drawing dies 22, thereby improving the efficiency of wire drawing.

[0031] When the switching component 24 drives the top drawing die 22 to move forward, the drawing die 22 can move from the rear drawing groove 23 to the front drawing groove 23, and at the same time, the drawing die 22 hidden in the support seat 21 will be added to the drawing groove 23 on the rear side, so that the aperture of the drawing die 22 in the drawing groove 23 becomes larger; similarly, when the switching component 24 drives the top drawing die 22 to move backward, the drawing die 22 can move from the front drawing groove 23 to the rear drawing groove 23, and at the same time, the drawing die 22 hidden in the support seat 21 will be added to the drawing groove 23 on the front side, so that the aperture in the drawing groove 23 becomes smaller. It should be noted that when the drawing die 22 in the frontmost drawing groove 23 has the minimum aperture, continuing to move the drawing die 22 backward will switch the aperture of the drawing die 22 in the frontmost drawing groove 23 to the drawing die 22 with the maximum aperture. Similarly, when the drawing die 22 in the rearmost drawing groove 23 has the maximum aperture, continuing to move the drawing die 22 forward will switch the aperture of the drawing die 22 in the rearmost drawing groove 23 to the drawing die 22 with the minimum aperture. Therefore, when the drawing die 22 in the frontmost drawing groove 23 has the minimum aperture or the drawing die 22 in the rearmost drawing groove 23 has the maximum aperture, it will no longer switch to a smaller aperture or a larger aperture.

[0032] See also Figure 3 、 Figure 4 and Figure 6 The switching assembly 24 includes a rotating shaft 241 rotatably mounted inside the support base 21 and distributed front and back. Two groups of sprockets 242 distributed left and right are fixedly mounted on the rotating shaft 241. There are two sprockets 242 in each group. The two corresponding front and rear sprockets 242 are commonly connected with a chain 243 for transmission. The wire drawing die 22 is fixedly connected between the corresponding two chains 243.

[0033] During specific use, the sprocket 242 is driven to rotate by the rotating shaft 241, and then the sprocket 242 drives the chain 243 to move, and the chain 243 is used to drive the drawing die 22 to move forward or backward, so as to adjust the aperture of the drawing die 22 in the drawing groove 23; by arranging chains 243 on both sides of the drawing die 22, it is possible to pull from both sides of the drawing die 22 at the same time, thereby improving the stability of the drawing die 22 when moving.

[0034] See also Figure 3 and Figure 4 The chain 243 is fixedly connected to a plurality of equally distributed support rollers 244 on the side away from the corresponding drawing die 22. A guide groove 245 is opened on the inner wall of the support seat 21 and is located on the side of the chain 243 away from the corresponding drawing die 22. The support rollers 244 are slidably installed in the corresponding guide grooves 245.

[0035] During specific use, when the chain 243 drives the drawing die 22 to move, the chain 243 will 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, thereby improving the stability of the chain 243 during movement, and thereby improving the stability of the drawing die 22 during movement.

[0036] See also Figure 2 、 Figure 3 and Figure 8 The locking assembly 25 includes a movable plate 251 that is slidably installed on the support base 21 and is symmetrically distributed on the left and right sides. A number of return springs 252 that are evenly distributed front and back are fixedly connected between the left and right movable plates 251. A number of positioning columns 253 that are evenly distributed front and back are fixedly connected to the opposite sides of the left and right movable plates 251. A positioning hole 221 is provided on the side of the wire drawing die 22 close to the corresponding movable plate 251. A trumpet mouth 222 is provided at the opening of the positioning hole 221. The positioning column 253 is plugged into the corresponding positioning hole 221. An unlocking unit for releasing the lock is also provided on the support base 21.

[0037] During specific use, in the initial state, the return spring 252 is in a compressed state, and the rebound force of the return spring 252 is used to push the movable plates 251 on the left and right sides away from each other, so that the positioning column 253 can be inserted into the corresponding positioning hole 221, and the positioning column 253 is used to lock the wire drawing die 22 to prevent the wire drawing die 22 from moving back and forth, thereby improving the stability of the wire drawing die 22 during the wire drawing process and reducing the occurrence of wire breakage; by providing a bell mouth 222 at the opening of the positioning hole 221, the bell mouth 222 can guide the positioning column 253, avoiding the situation where the positioning column 253 cannot be inserted into the positioning hole 221 due to incomplete alignment between the positioning column 253 and the positioning hole 221, which is conducive to the accurate insertion of the positioning column 253 into the corresponding positioning hole 221.

[0038] See also Figure 2 、 Figure 3 and Figure 8 The unlocking unit includes a plurality of fixed blocks 254 fixedly connected to the opposite sides of the left and right movable plates 251 and equidistantly distributed front and back. A guide groove 255 is provided on the fixed block 254. The two corresponding guide grooves 255 on the left and right form an eight-shaped shape with the large end facing forward. A pull plate 256 located above the movable plate 251 is installed on the support seat 21 for sliding back and forth. The bottom of the pull plate 256 is rotatably connected to a plurality of guide rods 257 corresponding to the fixed blocks 254 one by one. The guide rods 257 are slidably connected to the corresponding guide grooves 255, and the front end of the pull plate 256 slides through to the front of the support seat 21.

[0039] During specific use, before switching the wire drawing die 22, it is necessary to unlock it 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, the fixed block 254 will drive the left and right movable plates 251 to move closer to each other when pushed by the guide rod 257, so that the return spring 252 is further compressed and contracted. At this time, the end of the positioning column 253 will be separated from the positioning hole 221 under the drive 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.

[0040] When the drawing die 22 is switched, the pulling of the pulling plate 256 is released. At this time, the rebound force of the reset spring 252 is used to push the movable plates 251 on the left and right sides away from each other, so that the positioning column 253 can be reinserted into the corresponding positioning hole 221, and the drawing die 22 is locked again. When the movable plates 251 move away from each other, the fixed block 254 pushes the guide rod 257 and the pulling plate 256 to move backward and reset.

[0041] See also Figure 2 、 Figure 3 、 Figure 5 and Figure 6 The driving unit 26 includes a blocking cover 261 fixedly installed on the right side of the support base 21, and a knob 262 is rotatably installed on the right side of the blocking cover 261. The knob 262 is connected to the front rotating shaft 241 through a groove wheel mechanism 263 rotatably installed on the inner side of the blocking cover 261. A pointer 264 is fixedly connected to the outer ring wall of the knob 262, and a positioning block 265 located in front of the knob 262 is fixedly connected to the right side of the blocking cover 261.

[0042] When in use, the knob 262 drives the front shaft 241 to rotate intermittently through the transmission of the groove wheel mechanism 263, so that the chain 243 drives the wire drawing die 22 to move. Every time the knob 262 rotates one circle, the top wire drawing die 22 will move forward or backward by a unit distance, thereby realizing the forward and backward movement of the wire drawing die 22 at equal intervals, which is conducive to accurately switching the wire drawing die 22 and avoiding the situation where the wire drawing die 22 is not moved into place, resulting in the center hole of the wire drawing die 22 and the wire drawing groove 23 being misaligned left and right; through the pointer 264 and The mutual cooperation of the positioning block 265 indicates the number of rotations of the knob 262. When the knob 262 is rotated, the pointer 264 will be driven to rotate together. When the pointer 264 is aligned with the positioning block 265 again, it means that the knob 262 has made a complete rotation, avoiding the situation where the knob 262 is not rotated into place; by using the blocking cover 261 to cover the grooved wheel mechanism 263, it is prevented that lubricating liquid and debris adhere to the grooved wheel mechanism 263 during the wire drawing process, affecting the transmission of the grooved wheel mechanism 263, thereby ensuring the smooth operation of the grooved wheel mechanism 263.

[0043] See also 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 the right side of the blocking cover 261 and is fixedly connected to a gear 272. The right side of the blocking cover 261 is rotatably connected to a ring gear 273. The outer side of the gear 272 is engaged with the inner side of the ring gear 273. The right side of the ring gear 273 is fixedly connected to a turntable 274. A plurality of scale lines 275 distributed circumferentially are provided on the right side of the turntable 274. The right side of the blocking cover 261 is fixedly connected to a positioning block 276 located at the top of the turntable 274.

[0044] In specific use, when the front rotating shaft 241 rotates, the front rotating shaft 241 will drive the rotating rod 271 to rotate together, and the rotating rod 271 will drive the gear 272 to rotate, and the gear 272 will drive the ring gear 273 and the rotating disk 274 to rotate. Since the rotating shaft 241 rotates at a fixed angle under the drive of the groove wheel mechanism 263, the rotating disk 274 also rotates at a fixed angle after being driven by the gear 272 and the ring gear 273. Every time the rotating shaft 241 rotates once, the rotating disk 274 will drive the scale line 275 to rotate. At a certain angle, different scale lines 275 are moved to the positioning block 276, and the positioning block 276 is used to indicate the scale line 275 located at the top of the turntable 274. The value displayed by the scale line 275 located at the top of the turntable 274 is the size of the aperture of the drawing die 22 in the front drawing groove 23, which is convenient for quickly switching the required drawing die 22 to the corresponding drawing groove 23. There is no need to observe the size of the aperture of the drawing die 22 one by one, and it is faster and more convenient to use.

[0045] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0046] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A precision enameled wire drawing device based on a composite die adjustment structure, characterized by: The invention comprises a frame (1) and a wire drawing die mechanism (2) mounted on the frame (1), wherein the wire drawing die mechanism (2) comprises a support base (21) fixedly mounted in a water tank at the top of the frame (1), a plurality of wire drawing dies (22) uniformly distributed in the circumferential direction are mounted inside the support base (21), the apertures of the plurality of wire drawing dies (22) gradually increase in a clockwise direction, and a plurality of wire drawing grooves (23) are provided on the top of the support base (21) for exposing the central hole of the wire drawing die (22) and are uniformly distributed in the front and rear directions; The support seat (21) is equipped with a switching assembly (24) for driving the top drawing die (22) to move forward and backward equidistantly, a driving unit (26), and a locking assembly (25) for limiting the forward and backward movement of the drawing die (22). The right side of the support seat (21) is equipped with an indicating unit (27) for indicating the drawing die (22) located at the frontmost drawing groove (23).

2. The enameled wire precision drawing equipment based on the composite die adjustment structure according to claim 1, characterized in that: Two adjacent drawing dies (22) are staggered left and right, and the distance between the two adjacent drawing dies (22) is equal to the distance between two adjacent drawing grooves (23). The unit distance of the uppermost drawing die (22) moving forward and backward is equal to the distance between the two adjacent drawing dies (22).

3. The enameled wire precision drawing equipment based on a composite die adjustment structure according to claim 1, characterized in that: The switching assembly (24) includes a rotating shaft (241) rotatably mounted inside the support seat (21) and distributed front and back. Two groups of sprockets (242) distributed left and right are fixedly mounted on the rotating shaft (241). The number of sprockets (242) in each group is two. The two corresponding front and rear sprockets (242) are commonly connected to a chain (243). The wire drawing die (22) is fixedly connected between the two corresponding chains (243).

4. The enameled wire precision drawing equipment based on the composite die adjustment structure according to claim 3 is characterized in that: The chain (243) is fixedly connected to a plurality of support rollers (244) distributed at equal intervals on the side away from the corresponding wire drawing die (22); a guide groove (245) is provided on the inner wall of the support seat (21) and is located on the side of the chain (243) away from the corresponding wire drawing die (22); and the support rollers (244) are slidably installed in the corresponding guide groove (245).

5. The enameled wire precision drawing equipment based on a composite die adjustment structure according to claim 1, characterized in that: The locking assembly (25) includes a movable plate (251) that is slidably mounted on the support seat (21) and is symmetrically distributed on the left and right sides. A plurality of return springs (252) that are equidistantly distributed front and back are fixedly connected between the left and right movable plates (251). A plurality of positioning posts (253) that are equidistantly distributed front and back are fixedly connected to the opposite sides of the left and right movable plates (251). A positioning hole (221) is provided on a side of the wire drawing die (22) close to the corresponding movable plate (251). A trumpet mouth (222) is provided at the opening of the positioning hole (221). The positioning post (253) is plugged into the corresponding positioning hole (221). An unlocking unit for releasing the lock is also provided on the support seat (21).

6. The enameled wire precision drawing equipment based on the composite die adjustment structure according to claim 5, characterized in that: The unlocking unit includes a plurality of fixed blocks (254) fixedly connected to opposite sides of the left and right movable plates (251) and equidistantly distributed front and back, a guide groove (255) is provided on the fixed block (254), and the two corresponding guide grooves (255) on the left and right form an eight-shaped shape with the large end facing forward, a pull plate (256) located above the movable plate (251) is slidably mounted on the support seat (21) front and back, and the bottom of the pull plate (256) is rotatably connected to a plurality of guide rods (257) corresponding to the fixed blocks (254), the guide rods (257) are slidably connected to the corresponding guide grooves (255), and the front end of the pull plate (256) slides through to the front of the support seat (21).

7. The enameled wire precision drawing equipment based on a composite die adjustment structure according to claim 3, characterized in that: The driving unit (26) includes a stop cover (261) fixedly mounted on the right side of the support seat (21); a knob (262) is rotatably mounted on the right side of the stop cover (261); the knob (262) is transmission-connected to the front rotating shaft (241) by rotating a groove wheel mechanism (263) mounted on the inner side of the stop cover (261); a pointer (264) is fixedly connected to the outer ring wall of the knob (262); and a positioning block (265) located in front of the knob (262) is fixedly connected to the right side of the stop cover (261).

8. The enameled wire precision drawing equipment based on the composite die adjustment structure according to claim 7, characterized in that: 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 the right side of the blocking cover (261) and is fixedly connected to a gear (272); the right side of the blocking cover (261) is rotatably connected to a ring gear (273); the outer side of the gear (272) is meshed with the inner side of the ring gear (273); the right side of the ring gear (273) is fixedly connected to a rotating disk (274); a plurality of scale lines (275) distributed circumferentially are provided on the right side of the rotating disk (274); and the right side of the blocking cover (261) is fixedly connected to a second positioning block (276) located at the top of the rotating disk (274).

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