Hollow coil processing device and processing technology thereof

Abstract

The invention relates to the related technical field of hollow coil production, discloses a hollow coil processing device and a processing technology thereof, and aims to solve the problem that a processed hollow coil is easy to deform during unloading, an outer cylinder block and an adjusting cylinder block form a cylinder shape for coil winding, and when the hollow coil is wound and needs to be unloaded, the outer cylinder block and the adjusting cylinder block form a cylinder shape for coil winding. The adjusting cylinder blocks are retracted into the outer cylinder blocks, and the two outer cylinder blocks are relatively close to each other, so that the diameter of a cylinder formed by the outer cylinder blocks and the adjusting cylinder blocks is relatively reduced, the formed hollow coil cannot be tightly attached to the outer cylinder blocks and the adjusting cylinder blocks, and finally the effect that the diameter of the cylinder is controllable so as to facilitate discharging is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field related to hollow coil production, and in particular to a hollow coil processing device and a processing technology thereof. Background Art

[0002] An air-core coil is a toroidal inductor component wound by a conducting wire. It has no iron core or magnetic powder core inside, forming a hollow structure.

[0003] After searching, it is known that the announcement number CN113394018B discloses a hollow coil processing technology and processing device, which includes the following steps: 1. The mold core and the rib are ejected at the same time and the mold core and the mold piece are fitted together. The mold core, the rib and the mold piece form a winding groove after fitting together. 2. Move the rib to the end surface to fit the die, then the die core, rib and die rotate at the same speed under the drive of both sides, and then the winding device winds the enameled wire in sequence in the winding groove to form a hollow coil. During the winding process, the rib continues to retreat with the winding of the inner layer of enameled wire, so that the innermost layer of enameled wire is completely fitted; the surface of the enameled wire is coated with a self-adhesive paint layer, and the hollow coil is heated by a hot air blowpipe during the winding process; 3. After the hollow coil is wound and formed, the core, ribs and mold sheet stop rotating, and then the core pulling device simultaneously retracts the core and ribs, and the limiting device abuts against the ribs during the retraction process, so that the ribs and the core slide relative to each other and the end faces are flush with each other. At the same time, the hollow coil and the core are separated and fall naturally.

[0004] According to the above content, it can be clearly seen that the current coil is wound on the mandrel. After the processing is completed, the limiting device is used to abut against the rib during the retraction process, so that the rib and the core slide relative to each other and the end faces are flush with each other. At the same time, the hollow coil and the core fall naturally after separation. However, in actual application, after the coil is wrapped around the mandrel and heated by hot air, the contact surface between the enameled wire and the mandrel will increase relatively, which increases the friction between the coil and the mandrel. Therefore, during the unloading process, it is necessary to accurately match the balance between the thrust and the deadweight and friction resistance of the coil. If the thrust is too large, the coil may be squeezed and deformed; if the thrust is too small, the static friction may not be overcome, resulting in unloading failure. Therefore, how to optimize the unloading process and reduce the risk of coil deformation while ensuring the quality of the coil is one of the problems that need to be solved in the current hollow coil processing technology. Summary of the invention

[0005] The present invention provides a hollow coil processing device and a processing technology thereof, which have the advantage of controllable change of the cylindrical diameter, and are used to solve the problem of easy deformation of the processed hollow coil during unloading mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a hollow coil processing device, comprising: a support shaft, an intermediate frame is tightly connected at its end, a connecting rod is movably installed in a guide groove opened in the middle of the intermediate frame, outer cylinder blocks are symmetrically and movably installed on the side of the connecting rod and are pushed by a reset spring and approach each other, and an adjustment cylinder block is movably installed on the side of the intermediate frame using a control inclined groove; after the adjustment cylinder block is pushed outward and forms a cylinder with the outer cylinder block, a central support is provided for the winding of the hollow coil; the adjustment cylinder block is retracted into the outer cylinder block, so that the adjustment cylinder block and the outer cylinder block are away from the hollow coil for easy unloading.

[0007] Furthermore, it also includes: a winding frame, on one side of which a mold driven by a driver is installed, and a wire clamp is arranged on the side of the mold; a translation component is installed on the surface of the winding frame to realize the left and right reciprocating movement of the support shaft.

[0008] Furthermore, an inner gear ring and a retaining ring are installed at the end of the mold piece, and bolts pass through the mold piece and the inner gear ring and are fastened to the retaining ring; a connecting tooth head is fixedly installed at the end of the adjustment cylinder block; the inner gear ring and the connecting tooth head are engaged to realize the synchronous rotation of the mold piece and the support shaft.

[0009] Furthermore, a retaining ring is provided on the surface of the winding frame and is movably installed by means of a bearing; after the adjustment cylinder block is retracted into the outer cylinder block, the overall external dimension is reduced, thereby achieving relative staggering between the hollow coil and the retaining ring.

[0010] Furthermore, a detection push rod pushed by a detection push spring is movably installed on the inner side of the retaining ring, and a limited motion groove is arranged on the outer side of an adjustment cylinder block.

[0011] Furthermore, a conductive ring is fixedly installed on the outside of the detection push rod, and an electric contact head is arranged on the inside of the retaining ring. The electric contact head is connected to the electric slip ring fixed on the end of the retaining ring via a wire. A brush head slidingly connected to the electric slip ring is fixedly installed on the winding frame, and the brush head is electrically connected to the control unit via a wire.

[0012] A processing technology of a hollow coil processing device comprises the following steps: S1. After the outer cylinder block and the adjustment cylinder block are fitted outwardly into place, a circular cylinder is formed.

[0013] S2. The outer side of the circular cylinder is used for winding wires.

[0014] S3. After the wire winding is completed, the adjusting cylinder block is retracted into the outer cylinder block, so that the adjusting cylinder block and the outer cylinder block are relatively far away from the formed hollow coil.

[0015] S4. The unconstrained hollow coil is easy to remove.

[0016] The present invention has the following beneficial effects: The present invention provides a hollow coil processing device and a processing technology thereof, wherein the device is mainly composed of an outer cylinder block, an adjustment cylinder block and a corresponding control system. The outer cylinder block and the adjustment cylinder block are assembled in a precise matching manner to form a cylindrical structure for coil winding. During the winding process, the two parts maintain a stable relative position to ensure that the coil can be evenly and tightly wound on the formed cylindrical structure. When the hollow coil winding operation is completed and enters the unloading stage, the control system will gradually retract the adjustment cylinder block into the outer cylinder block according to a preset path through the control system. At the same time, the outer cylinder blocks will also approach each other through the action of springs. This action causes the cylindrical diameter originally maintained by the outer cylinder block and the adjustment cylinder block to gradually decrease, creating space for the smooth release of the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0018] The present invention may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal planar cross-sectional structure of the support shaft of the present invention; Figure 3 for Figure 2 The enlarged structural diagram at E in the middle; Figure 4 This is a schematic diagram of the internal three-dimensional structure of the support shaft of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the retaining ring of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the mold piece of the present invention; Figure 7 This is a three-dimensional structural diagram of the adjustment cylinder block of the present invention.

[0019] In the figure: 1. winding frame; 1001. discharge channel; 2. winding assembly; 200. pay-off head; 3. driver; 4. mold; 400. clamp; 5. outer cylinder block; 501. connecting rod; 502. reset spring; 6. adjustment cylinder block; 600. limit groove; 601. connecting tooth head; 7. support shaft; 8. intermediate frame; 800. control inclined groove; 801. guide groove; 9. inner gear ring; 10. retaining ring; 11. retaining ring; 12. detection push rod; 120. conductive ring; 121. detection push spring; 13. electric slip ring; 130. electric contact head; 14. brush head; 15. translation assembly. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 It can be seen that the winding frame 1 provides installation and support for the entire device. A driver 3 is fixed on one side of the surface of the winding frame 1. The driver 3 is mainly composed of a servo motor and a reducer. The power and model can be selected according to the use requirements. The output end of the driver 3 is generally fixed with a mold 4, and the mold 4 can be driven by the driver 3 to rotate.

[0022] A winding assembly 2 located above the driver 3 is fixedly mounted on the same side of the winding frame 1 surface. The winding assembly 2 can drive the pay-off head 200 located above the die 4 to reciprocate left and right. Generally speaking, the pay-off head 200 contains wire materials required for processing hollow coils, such as copper wire. Figure 1 and Figure 6 As shown, a wire clamp 400 is provided on the side of the mold piece 4. The wire clamp 400 can use manual / electric drive to relatively rotate the screw rod, so that the two clamping plates on the wire clamp 400 clamp the ends of the wire, ensuring that the ends of the hollow coil can be relatively fixed when winding.

[0023] The translation assembly 15 is movably mounted on the surface of the winding frame 1, and a support shaft 7 is movably mounted on the top of the translation assembly 15. More specifically, the translation assembly 15 is composed of a gas / hydraulic cylinder or a motor screw, which drives the movable frame to reciprocate left and right along the surface of the winding frame 1. During this process, the translation assembly 15 can also drive the support shaft 7 to reciprocate left and right. Figure 2 , Figure 4 and Figure 7 It can be seen that the end of the support shaft 7 is fastened with an intermediate frame 8, and the intermediate frame 8 is in the shape of a rectangular parallelepiped, and a guide groove 801 is provided in the middle thereof along the axial direction of the support shaft 7, and a connecting rod 501 that can only reciprocate along the axial direction of the support shaft 7 is movably installed in the guide groove 801. There are two connecting rods 501, and the outer cylinder blocks 5 are symmetrically and movably installed on the sides of the two connecting rods 501, and a reset spring 502 is installed between the outer cylinder block 5 and the nut threadedly connected to the end of the connecting rod 501. Therefore, under normal conditions, the two outer cylinder blocks 5 are pushed by the elastic force of the reset spring 502 to approach each other. Control bevel grooves 800 are provided on the sides of the intermediate frame 8, and the roller bracket on the adjustment cylinder block 6 is movably installed in the control bevel groove 800. A guide block installed by a dovetail groove is provided on the outer side of the intermediate frame 8, and a telescopic rod is provided between the guide block and the adjustment cylinder block 6. From Figure 2 and Figure 4 It can be seen that there are two adjustment barrel blocks 6, and the two adjustment barrel blocks 6 are arranged symmetrically. When the middle frame 8 pushes the outer barrel block 5 and the adjustment barrel block 6 to the end of the mold 4, the support shaft 7 that continues to move to the left will push the middle frame 8 to move further, and the adjustment barrel block 6 will be ejected outward according to the control inclined groove 800, and a complete cylinder is formed between the adjustment barrel block 6 and the outer barrel block 5. According to what was said above, the wire on the wire release head 200 is wound to the outside of the adjustment barrel block 6 to complete the processing of the hollow coil. When the hollow coil is wound, the adjustment barrel block 6 is retracted to the inside of the outer barrel block 5 along the control inclined groove 800 by retracting the middle frame 8, and the two outer barrel blocks 5 are relatively close to each other by the elastic force of the reset spring 502, so that the outer barrel block 5 and the adjustment barrel block 6 have a tendency to be relatively far away from the hollow coil, which is convenient for unloading the hollow coil.

[0024] As stated in the background technology, "the retaining edge is moved to the end surface to fit the mold, and then the mold core, retaining edge and mold rotate at the same speed under the drive of both sides." The current mold 4 and support shaft 7 are mainly controlled by two motors, and the two rotate synchronously. This requires ensuring that the synchronization of the motor movement is always consistent. However, due to the influence of life, environment and wear during long-term use, torque deviation is inevitable between the mold 4 and the support shaft 7, which leads to a differential speed between the mold 4 and the support shaft 7, and then leads to uneven distribution of the wire, thereby affecting the winding quality of the hollow coil. In order to solve the problem of asynchronous rotation of the mold 4 and the support shaft 7, the present application refers to Figure 2 and Figure 6 It can be seen that the end of the mold piece 4 is equipped with an inner gear ring 9 and a retaining ring 10, and the bolts pass through the mold piece 4 and the inner gear ring 9 and are fastened to the retaining ring 10, so as to realize the stable connection between the inner gear ring 9 and the retaining ring 10 on the mold piece 4. Correspondingly, a connecting tooth head 601 is fixedly installed at the end of the adjustment cylinder block 6. Under normal conditions, since the adjustment cylinder block 6 is retracted into the outer cylinder block 5, the outer diameter of the outer cylinder block 5 and the adjustment cylinder block 6 as a whole is relatively smaller than the inner diameter of the retaining ring 10, so that the outer cylinder block 5 and the adjustment cylinder block 6 can be smoothly inserted into the retaining ring 10. With the opening between the outer cylinder block 5 and the adjustment cylinder block 6, the connecting tooth head 601 on the outer side of the adjustment cylinder block 6 will mesh with the inner gear ring 9. Moreover, when the outer cylinder block 5 and the adjustment cylinder block 6 form a complete cylinder, the outer diameter of the cylinder is the same as the inner diameter of the retaining ring 10. Finally, when the driver 3 drives the mold 4 to rotate, the stable meshing between the inner gear ring 9 and the connecting tooth head 601 ensures that the mold 4 and the support shaft 7 always move synchronously, thereby ensuring the synchronization of the rotation of the two.

[0025] In terms of unloading, as mentioned in the background technology, the hollow coil is currently mainly pushed out by the axial push of the core mold and the retaining ring, which requires a closer fit between the two. The reason is that the hollow coil (i.e. the diameter of the copper wire) is relatively thin. If the gap between the two is too large, the coil is easy to get stuck in the gap between the two. In order to prevent such problems from occurring, combined with Figure 1 , Figure 2 and Figure 5 It can be seen that the surface of the winding frame 1 has a retaining ring 11 movably installed by using a bracket and a bearing. The diameter of the cylinder formed by the outer cylinder block 5 and the adjustment cylinder block 6 is equal to the inner diameter of the retaining ring 11 and is coaxial. Under normal conditions, when the outer cylinder block 5 and the adjustment cylinder block 6 are opened and matched, the left end is restricted by the retaining ring 10 and the right end is restricted by the retaining ring 11, ensuring that the ends of the opened outer cylinder block 5 and the adjustment cylinder block 6 are restricted. When the driver 3 drives the support shaft 7 to rotate synchronously through the mold 4, the pay-off head 200 winds the copper wire around the outside of the cylinder formed by the outer cylinder block 5 and the adjustment cylinder block 6, and uses the retaining ring 10 and the retaining ring 11 ends to restrict the ends of the hollow coil, so that the length of the hollow coil after manufacturing is the spacing value between the retaining ring 10 and the retaining ring 11 ends. When the processing is completed and the unloading is carried out, the adjusting cylinder block 6 is retracted into the outer cylinder block 5, resulting in a reduction in the overall external dimensions, i.e., the highest portion formed by the outer cylinder block 5 and the adjusting cylinder block 6 is lower than the highest portion of the inner diameter of the retaining ring 11. During this process, the hollow coil tends to move downward due to gravity, resulting in a relative offset between the hollow coil and the retaining ring 11. When the outer cylinder block 5 and the adjusting cylinder block 6 pass through the interior of the retaining ring 11, the hollow coil can be unloaded by utilizing the end of the retaining ring 11 to block the hollow coil.

[0026] In order to detect whether the outer cylinder block 5 and the adjustment cylinder block 6 form a cylindrical shape normally before winding, Figure 2 , Figure 3 and Figure 5 It can be seen that a detection push rod 12 is movably installed inside the retaining ring 11 and is pushed toward its center by a detection push spring 121. The end of the detection push rod 12 abuts against the outer side of the adjustment cylinder block 6. A limited motion groove 600 is provided on the outer side of one of the adjustment cylinder blocks 6. When the outer cylinder block 5 and the adjustment cylinder block 6 are installed horizontally in place, the end of the detection push rod 12 will abut against the limited motion groove 600. Figure 3As shown. At the same time, a conductive ring 120 is fixedly installed on the outside of the detection push rod 12, and correspondingly, an electric contact head 130 is arranged on the inside of the retaining ring 11. The electric contact head 130 is connected to the electric slip ring 13 fixed at the end of the retaining ring 11 through a wire. A brush head 14 that is slidably connected to the electric slip ring 13 is fixedly installed on the winding frame 1, and the brush head 14 is electrically connected to the control unit through a wire. When the outer cylinder block 5 and the adjustment cylinder block 6 form a normal cylinder shape, the two adjustment cylinder blocks 6 will push against their respective detection push rods 12 to move outward, causing the conductive ring 120 and the electric contact head 130 to communicate, and finally make the two electric slip rings 13 electrically connected. Since one detection push rod 12 abuts against the outer side of the adjustment cylinder block 6, and the other detection push rod 12 abuts against the stop groove 600 of the other adjustment cylinder block 6, when the outer cylinder block 5 and the adjustment cylinder block 6 form a normal cylinder, the heights of the two detection push rods 12 protruding outward are actually different, which further limits the detection push rod 12 to abut against the stop groove 600 to achieve the connection between the conductive ring 120 and the electric contact head 130. On the one hand, it is detected whether the outer cylinder block 5 and the adjustment cylinder block 6 are inserted in place, and on the other hand, it is detected whether the outer cylinder block 5 and the adjustment cylinder block 6 cooperate normally, so as to ensure that the outer cylinder block 5 and the adjustment cylinder block 6 can form the required cylindrical shape at the preset position. It should be noted that according to the adjustment of the control unit, the driver 3 can only start to start when the two electric slip rings 13 are connected, so as to ensure that the driver 3 rotates and realizes the processing of the hollow coil when the outer cylinder block 5 and the adjustment cylinder block 6 move in place.

[0027] The application process is as follows: in accordance with Figure 2 As shown, the translation assembly 15 drives the support shaft 7 to move to the left. When the outer cylinder block 5 and the adjustment cylinder block 6 pass through the retaining ring 10 and reach the end of the mold piece 4, the support shaft 7 that continues to move to the left will push the intermediate frame 8 to move further to the left. The control inclined groove 800 will push the adjustment cylinder block 6 to move outward until the adjustment cylinder block 6 is completely ejected. Figure 4 As shown, the adjustment cylinder block 6 pushed outward will abut against the inner inclined surface of the outer cylinder block 5, forcing the two outer cylinder blocks 5 to move relatively away from each other and move along the connecting rod 501 and compress the return spring 502. Finally, the cylinder formed by the outer cylinder block 5 and the adjustment cylinder block 6 respectively abuts against the inner side of the retaining ring 10 and the retaining ring 11, connecting the tooth head 601 and the inner gear ring 9 for meshing transmission.

[0028] In this process, before the outer cylinder block 5 and the adjustment cylinder block 6 are close to the mold 4, the outer cylinder block 5 is pushed by the reset spring 502 to make the two outer cylinder blocks 5 close to each other. At this time, the adjustment cylinder block 6 is retracted into the two outer cylinder blocks 5, and the detection push rod 12 is pushed by the elastic force of the detection push spring 121 to always press against the outside of the adjustment cylinder block 6. Therefore, there will be a spacing of the diameter of the detection push rod 12 between the two outer cylinder blocks 5. When the middle frame 8 drives the outer cylinder block 5 and the adjustment cylinder block 6 to move left and right, the detection push rod 12 will also move along the side of the adjustment cylinder block 6 and in the horizontal direction of the limit groove 600. It can be seen from this that when the outer cylinder block 5 and the adjustment cylinder block 6 are in place on the left (that is, completely attached to the end of the mold 4), the detection push rod 12 will press against the limit groove 600. When the outer cylinder block 5 and the adjustment cylinder block 6 move outward and form a complete cylinder, the two detection push rods 12 will push their respective conductive rings 120 to connect with the electric contact head 130, and the brush heads 14 will be connected to each other after passing through the electric slip ring 13 and the two conductive rings 120 and the electric contact head 130. The connection is transmitted to the control unit in the form of an electrical signal. If the control unit receives the electrical signal, it means that the outer cylinder block 5 and the adjustment cylinder block 6 have been installed in place; otherwise, the outer cylinder block 5 and the adjustment cylinder block 6 are not placed normally, and the driver 3 will not work.

[0029] Afterwards, the winding assembly 2 drives the pay-off head 200 so that the end of the wire is clamped by the clamp 400, and the wire is not limited to copper wire. Afterwards, when the pay-off head 200 moves axially along the mold 4, the wire passes through the rectangular groove on the side of the mold 4; after the pay-off head 200 moves to the connection position between the mold 4 and the outer cylinder block 5 / adjustment cylinder block 6, the driver 3 drives the mold 4 to rotate. At the same time, the engagement between the connecting tooth head 601 and the inner gear ring 9 forces the outer cylinder block 5 / adjustment cylinder block 6 and the support shaft 7 to rotate synchronously. The winding of the hollow coil is realized by the rotation of the outer cylinder block 5 / adjustment cylinder block 6, and the pay-off head 200 is moved axially back and forth along the support shaft 7 to finally complete the winding of the hollow coil. After the winding is completed, the wire extending from the pay-off head 200 is cut off and the clamp 400 releases the clamp on the end of the wire.

[0030] The translation assembly 15 drives the support shaft 7 to move to the right. During this process, since one detection push rod 12 abuts against the limit groove 600 and the other detection push rod 12 abuts against the outside of the other adjustment cylinder block 6, on the one hand, the two adjustment cylinder blocks 6 are relatively close to each other, so that the adjustment cylinder block 6 is retracted into the outer cylinder block 5; on the other hand, the detection push rod 12 abuts against the limit groove 600, so that the rightward movement of the adjustment cylinder block 6 is blocked. Finally, after the two adjustment cylinder blocks 6 are completely retracted into the outer cylinder block 5, the two outer cylinder blocks 5 are pushed by the elastic force of the reset spring 502 to move closer to each other until the outer cylinder block 5 is attached to the detection push rod 12 and clamped. As the support shaft 7 drives the intermediate frame 8 to continue to move to the right, the intermediate frame 8 drives the outer cylinder block 5 to disengage from the retaining ring 10. During this process, since the adjustment cylinder block 6 is retracted into the outer cylinder block 5, the overall external dimensions of the outer cylinder block 5 and the adjustment cylinder block 6 are reduced, and the formed hollow coil moves downward a certain distance. As the outer cylinder block 5 and the adjustment cylinder block 6 move to the right along the support shaft 7, the end face of the retaining ring 11 blocks the hollow coil, causing it to separate from the outer cylinder block 5 / adjustment cylinder block 6 and finally fall onto the discharge channel 1001 below.

Claims

1. A hollow coil processing device, characterized in that: include: The supporting shaft (7) has an intermediate frame (8) fixedly connected at its end, a connecting rod (501) movably mounted in a guide groove (801) provided in the middle of the intermediate frame (8), outer cylinder blocks (5) pushed by a return spring (502) and approaching each other are symmetrically and movably mounted on the side of the connecting rod (501), and an adjustment cylinder block (6) is movably mounted on the side of the intermediate frame (8) by means of a control inclined groove (800); After the adjusting cylinder block (6) is pushed outward and forms a cylinder with the outer cylinder block (5), a central support is provided for the winding of the hollow coil; the adjusting cylinder block (6) is retracted into the outer cylinder block (5), so that the adjusting cylinder block (6) and the outer cylinder block (5) are away from the hollow coil to facilitate unloading.

2. The hollow coil processing device according to claim 1, characterized in that: Also included are: A winding frame (1) has a die (4) driven by a driver (3) mounted on one side of its surface, and a wire clamp (400) is arranged on the side of the die (4); The translation assembly (15) is mounted on the surface of the winding frame (1) to enable the support shaft (7) to reciprocate left and right.

3. The hollow coil processing device according to claim 2, characterized in that: An inner gear ring (9) and a retaining ring (10) are installed at the end of the mold piece (4), and a bolt passes through the mold piece (4) and the inner gear ring (9) and is fastened to the retaining ring (10); A connecting tooth head (601) is fixedly mounted on the end of the adjusting cylinder block (6); The meshing between the inner gear ring (9) and the connecting gear head (601) enables the mold piece (4) and the support shaft (7) to rotate synchronously.

4. The hollow coil processing device according to claim 2, characterized in that: The winding frame (1) has a retaining ring (11) on its surface which is movably mounted using a bearing; After the adjustment cylinder block (6) is retracted into the outer cylinder block (5), the overall external dimensions are reduced, thereby achieving relative staggering between the hollow coil and the retaining ring (11).

5. The hollow coil processing device according to claim 4, characterized in that: A detection push rod (12) pushed by a detection push spring (121) is movably mounted on the inner side of the retaining ring (11), and a limited motion groove (600) is provided on the outer side of an adjustment cylinder block (6).

6. The hollow coil processing device according to claim 5, characterized in that: A conductive ring (120) is fixedly mounted on the outside of the detection push rod (12), an electric contact head (130) is arranged on the inside of the retaining ring (11), the electric contact head (130) is connected to an electric slip ring (13) fixed to the end of the retaining ring (11) via a wire, an electric brush head (14) slidably connected to the electric slip ring (13) is fixedly mounted on the winding frame (1), and the electric brush head (14) is electrically connected to the control unit via a wire.

7. A processing technology of the hollow coil processing device according to claim 1, characterized in that: The following steps are involved: After S1, the outer cylinder block (5) and the adjustment cylinder block (6) are fitted outwardly into place, a circular cylinder is formed; S2, the outer side of the circular cylinder is used for winding wire; S3, after the wire winding is completed, the adjusting cylinder block (6) is retracted into the outer cylinder block (5), so that the adjusting cylinder block (6) and the outer cylinder block (5) are relatively far away from the formed hollow coil; S4. The unconstrained hollow coil is easy to remove.

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