Protector resistance wire automatic forming device

Abstract

This utility model relates to an automatic forming device for resistance wires in a protector, belonging to the field of resistance wire processing. The device includes a chassis for mounting and supporting the internal mechanisms, with a protective cover on the top for protection and sound insulation. An automatic wire feeding rack, located on the outside of the chassis, holds the resistance wire coils. An automatic wire feeding mechanism draws out the resistance wire and transports it to an automatic spiral forming mechanism, which winds the resistance wire into a spiral shape according to a set pitch and diameter. An energized ring-shaped shaping mechanism is installed at the forming outlet of the automatic spiral forming mechanism to heat and shape the spiral-formed resistance wire into a ring shape. This device enables fully automated processing of resistance wires from wire feeding, forming, shaping, cutting to unloading and stacking, significantly improving production efficiency, enhancing product consistency and quality, and reducing manual labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of resistance wire processing, specifically to an automatic forming device for protector resistance wire. Background Technology

[0002] Currently, resistance wire is a crucial component in the production of electrical protectors and similar parts, and its performance directly affects the stability and service life of the protector. In existing technologies, resistance wire is mostly formed using semi-automatic winding machines. While these machines achieve a certain degree of automation, they still have the following drawbacks:

[0003] First, the winding machine generates significant noise during operation, affecting the production environment and the comfort of operators. Second, the wound resistance wires often become tangled due to the lack of proper feeding and sorting processes, leading to sorting difficulties, low efficiency, and hindering subsequent automated processes. Third, the resistance wires wound using traditional methods have poor length consistency, resulting in unstable resistance values ​​and low product consistency and pass rates. Furthermore, the final shape of the resistance wires usually relies on manual clamping, which is outdated, labor-intensive, and produces unstable shapes, easily affecting the performance of the resistance wires and product quality. Utility Model Content

[0004] To address the aforementioned issues, this invention provides an automatic forming device for protector resistance wires. This device enables fully automated forming, shaping, unloading, and stacking of resistance wires, thereby reducing noise, improving production efficiency, ensuring consistency in resistance wire dimensions and electrical performance, and reducing manual operation, thus enhancing product quality and production automation.

[0005] This utility model is achieved through the following technical solution: an automatic forming device for protector resistance wire, comprising:

[0006] A chassis for installing and supporting the internal mechanisms of the device, and a protective cover is installed on the top of the chassis;

[0007] An automatic wire feeding rack, used to hold resistance wire rolls, is located on one side of the outside of the chassis;

[0008] An automatic wire feeding mechanism is installed on the upper surface of the machine housing and connected to the automatic wire feeding frame, used to draw out and feed the resistance wire from the resistance wire coil;

[0009] An automatic spiral forming mechanism is installed on the machine housing and located on one side of the automatic wire feeding mechanism. It is used to wind the fed resistance wire into a spiral shape according to a set pitch and diameter.

[0010] An energized ring-shaped shaping mechanism is installed on the chassis and located at the forming outlet of the automatic spiral forming mechanism. It is used to heat and shape the spiral-formed resistance wire into a ring shape.

[0011] A resistance wire cutting mechanism is installed on the chassis and is perpendicular to the output end of the automatic wire feeding mechanism to cut the finished resistance wire after winding.

[0012] An automatic feeding mechanism, installed on the chassis, is used to receive the shaped resistance wires and stack them for feeding.

[0013] An automatic stacking mechanism is installed on the machine casing. The formed resistance wires are stacked on the automatic stacking mechanism by the automatic feeding mechanism.

[0014] As a preferred technical solution, the automatic yarn feeding frame includes:

[0015] The main support column has a wire feeding motor installed at its top. A winding wheel is installed at the output end of the wire feeding motor. The resistance wire is wound on the winding wheel and fed out by the wire feeding motor.

[0016] The first horizontal column is vertically installed on one of the surfaces of the main support column, and a guide wheel is installed on the first horizontal column;

[0017] At least two second transverse columns are vertically installed on the other side of the main support column. A floating guide rod is provided between the at least two second transverse columns. A tensioning slider is installed on the floating guide rod. A tensioning wheel is installed on the tensioning slider. The resistance wire is output and fed to the automatic wire feeding mechanism after passing through the guide wheel and the tensioning wheel.

[0018] As a preferred technical solution, the automatic wire feeding mechanism includes:

[0019] The first servo reciprocating drive mechanism is fixedly mounted on the chassis;

[0020] The linkage mounting block is installed on the power end of the first servo reciprocating drive mechanism;

[0021] At least two linkage rods, one end of which is fixedly connected to the linkage mounting block, and the other end of which is fixedly connected to both sides of a wire feeding slider;

[0022] A wire feeding bracket is fixedly installed on the machine housing. The wire feeding bracket is provided with a wire feeding guide rod. Each wire feeding guide rod is provided with two springs. The wire feeding slider is slidably installed on the wire feeding guide rod and located between the two springs.

[0023] A wire feeding spool is located at the output end of the wire feeding bracket. The resistance wire is fed through the wire feeding slider, the wire feeding bracket, and the wire feeding spool toward the automatic spiral forming mechanism.

[0024] As a preferred technical solution, the wire feeding slider is provided with an electromagnet and a metal positioning block. The resistance wire passes between the metal positioning block and the electromagnet. When the electromagnet is energized, it attracts the metal positioning block and presses the resistance wire to achieve the wire feeding action. A wire groove is formed between the metal positioning block and the electromagnet, and the resistance wire is positioned and pressed in the wire groove.

[0025] As a preferred technical solution, the automatic spiral forming mechanism includes a main support frame, on which a second servo reciprocating drive mechanism is mounted. An L-shaped mounting plate is provided at the power end of the second servo reciprocating drive mechanism, and a first drive motor is mounted on the mounting plate. A first drive wheel is mounted at the output end of the first drive motor. A rotating cylinder is provided on the L-shaped mounting plate, and a first driven wheel is mounted on the rotating cylinder. A first transmission belt is installed between the first drive wheel and the first driven wheel.

[0026] A first telescopic shaft is installed through the rotating cylinder. The first telescopic shaft can move up and down relative to the rotating cylinder. Guide grooves are respectively provided on both sides of the rotating cylinder. A guide slider is provided at the position of the first telescopic shaft relative to the guide groove. The guide slider is slidably disposed in the guide groove. A lifting drive rod is connected to the top of the first telescopic shaft. A first lifting drive cylinder is connected to the top of the lifting drive rod. The first lifting drive cylinder is fixedly installed on the L-shaped mounting plate by a cylinder fixing bracket. A positioning shaft is provided at the bottom of the first telescopic shaft.

[0027] A winding screw is connected to the bottom of the first telescopic shaft. The winding screw passes through the positioning shaft and can extend to the lower end face of the positioning shaft.

[0028] A second telescopic shaft is fixedly installed on the housing corresponding to the bottom of the winding screw. The bottom of the second telescopic shaft is driven to move up and down by a second lifting drive cylinder. The second telescopic shaft is provided with a relief shaft hole corresponding to the position of the winding screw, so that the winding screw can be inserted into the relief shaft hole when it descends. The lower end face of the positioning shaft is provided with a concave and convex wire slot, and the resistance wire is positioned through the wire slot.

[0029] After one end of the resistance wire is inserted into the wire slot, the end of the inserted resistance wire is bent by the swing block on one side to form a first wire end. The bent first wire end is locked with the wire slot on the positioning shaft. At this time, the first lifting drive cylinder keeps the winding screw in the ejected state, while the rotating cylinder and the positioning shaft are in a state of rotating and rising. The resistance wire is wound on the winding screw from bottom to top in a spiral state. After the winding is completed, the resistance wire cutting mechanism pushes out and cuts the resistance wire, forming a second wire end on the wound resistance wire. The locking state of the first wire end and the wire slot is unlocked by rotating the rotating cylinder and the positioning shaft in the opposite direction.

[0030] The resistance wire cutting mechanism includes a cutting cylinder and a cutting blade. The cutting blade is installed on the drive end of the cutting cylinder and is arranged perpendicular to the resistance wire.

[0031] As a preferred technical solution, the swing block is driven by a second drive motor. A second drive wheel is installed at the output end of the second drive motor. A swing drive rod is provided on one side of the second drive wheel. The swing block is installed on the swing drive rod. A second driven wheel is installed on the swing drive rod. A second transmission belt is installed between the second drive wheel and the second driven wheel. The reciprocating motion of the second drive motor drives the swing block to perform a reciprocating swinging motion. The swing block is located on one side of the positioning shaft.

[0032] As a preferred technical solution, the energized ring-shaped shaping mechanism is slidably mounted on a movable mounting plate, and the movable mounting plate is driven to reciprocate by a third servo reciprocating drive mechanism, so that the energized ring-shaped shaping mechanism can approach or move away from the resistor finished wire.

[0033] The energized ring-shaped shaping mechanism includes a housing, a spindle housing, a shaping motor, an electrode ring, a clamping plate, and shaping jaws. The spindle housing is mounted on the movable mounting plate. The spindle passes through the spindle housing and is driven by the shaping motor at its tail end to perform a circumferential winding shaping action. The head of the spindle forms a shaping head, and the electrode ring is embedded in the shaping head. A jaw support is provided on one side of the shaping head, and the shaping jaws are mounted on the jaw support. The jaw support is fixedly mounted on the movable mounting plate. A clamping cavity is formed between the clamping plate and the shaping head. The shaping jaws are used to clamp the first wire end of the resistance wire. After the resistance wire is clamped by the clamping plate, the shaping head is rotated to make the resistance wire arc-shaped. A clamping cylinder is also provided inside the shaping head, and the clamping plate is driven by the clamping cylinder.

[0034] As a preferred technical solution, a shaping and winding post is provided on the end face of the shaping head. When the shaping head rotates, the resistance wire is wound on the shaping and winding post, and a wire insertion groove is formed on the clamping plate. The second wire end of the resistance wire is located in the wire insertion groove, and the resistance wire is cut by the resistance wire cutting mechanism to form the second wire end.

[0035] As a preferred technical solution, the automatic unloading mechanism includes an unloading motor fixed on the chassis, a first bevel gear installed at the output end of the unloading motor, a rotating shaft axially connected to the first bevel gear, one end of the rotating shaft being connected to the first bevel gear, the other end of the rotating shaft being hinged to the chassis, an unloading rod fixedly installed on the rotating shaft, and a second bevel gear provided on the end face of the unloading rod, the second bevel gear being hinged to the first bevel gear;

[0036] A swing rod is provided on the side of the feeding rod opposite to the second bevel gear. A clamping cylinder is provided inside the swing rod. A drive connecting block is provided at the output end of the clamping cylinder. The drive connecting block is movably installed in the stroke groove provided on the swing rod. A limit clamp is fixedly installed on the drive connecting block. The limit clamp has a U-shaped groove. A product positioning head is provided on the side of the swing rod corresponding to the U-shaped groove. The shaped resistance wire is positioned on the product positioning head and its end face is limited by the limit clamp on one side.

[0037] As a preferred technical solution, the automatic stacking mechanism includes a stacking base, a rotating platform is provided on the stacking base, and one or more stacking rods are arranged around the upper surface of the rotating platform. The top of the stacking rod is conical. A positioning gripper is provided on one side of one of the stacking rods on the machine housing. The positioning gripper is used to stabilize the stacking rod. The finished resistance wire is stacked on the stacking rod through the automatic unloading mechanism.

[0038] The beneficial effects of this utility model are as follows: The automatic forming device for resistor wire provided by this utility model integrates multiple mechanisms such as automatic wire feeding, wire feeding, spiral forming, energized shaping, cutting, unloading, and stacking within the machine casing, thus constructing a complete automated production process for resistor wire, and has the following beneficial effects:

[0039] First, this invention utilizes an automatic wire feeding frame combined with a tensioning structure to ensure stable wire feeding, preventing resistance wire tangling and improving the smoothness of wire feeding. Second, it employs a servo reciprocating drive combined with an electromagnetic adsorption wire feeding structure to precisely control the wire feeding length and rhythm, ensuring consistent length of the formed resistance wire and improving the consistency of product resistance values. Third, the spiral forming mechanism, through multi-axis linkage and precise positioning, can efficiently achieve spiral forming of the resistance wire, ensuring pitch and diameter accuracy and improving product quality. In addition, the energized ring-type shaping mechanism can heat and shape the spiral-formed resistance wire, keeping it in a stable shape and improving product consistency and service life. Simultaneously, the resistance wire cutting mechanism of this invention, in conjunction with the automatic feeding and stacking mechanism, reduces manual operation, achieves full-process automation, significantly improves production efficiency, and reduces labor intensity. Finally, the protective cover on the chassis and exterior effectively isolates noise and moving parts, improving production safety and the comfort of the operating environment. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model;

[0042] Figure 2 This is a schematic diagram of the internal structure of the present invention. Figure 1 ;

[0043] Figure 3 This is a schematic diagram of the internal structure of the present invention. Figure 2 ;

[0044] Figure 4 This is a schematic diagram of the internal structure of the present invention. Figure 3 ;

[0045] Figure 5 This utility model Figure 4 A magnified view of a section at point A in the middle;

[0046] Figure 6 This is a schematic diagram of the automatic feeding mechanism of this utility model;

[0047] Figure 7 This is a schematic diagram of the stacking mechanism of this utility model;

[0048] Figure 8 This is a schematic diagram of the automatic wire feeding frame of this utility model;

[0049] Figure 9 This is a schematic diagram of the automatic wire feeding mechanism of this utility model;

[0050] Figure 10 This is a partial enlarged view of the energized ring-type shaping mechanism of this utility model;

[0051] Figure 11 This is a structural schematic diagram of the position of the oscillating block in this utility model;

[0052] Explanation of reference numerals in the attached figures:

[0053] 3. Chassis; 2. Protective Cover; 1. Automatic Wire Feeding Frame; 1009. Main Support Column; 1001. Wire Feeding Motor; 1002. Rewinding Roller; 1003. First Horizontal Column; 1004. Guide Roller; 1005. Second Horizontal Column; 1007. Floating Guide Rod; 1008. Tensioning Slider; 1006. Tensioning Roller; 5. Automatic Wire Feeding Mechanism; 54. First Servo Reciprocating Drive Mechanism; 100. Resistance Wire Roll; 53. Linkage Mounting Block; 55. Linkage Rod; 52. 51. Wire feeding slider; 56. Wire feeding bracket; 17. Spring; 7. Wire feeding drum; 14. Automatic spiral forming mechanism; 12. Main support; 13. Second servo reciprocating drive mechanism; 14. L-shaped mounting plate; 15. First drive motor; 76. Rotating cylinder; 77. First driven wheel; 78. Guide groove; 79. Guide slider; 70. Lifting drive rod; 71. First lifting drive cylinder; 72. Positioning shaft; 73. Winding screw; 14. Second telescopic shaft; 15. Second lifting drive cylinder; 20. Retreat shaft hole; 5005. Swing block; 5001. Second drive motor; 5002. Second driving wheel; 5003. Swing drive rod; 5004. Second driven wheel; 9. Electrified ring-shaped shaping mechanism; 8. Movable mounting plate; 11. Third servo reciprocating drive mechanism; 92. Chassis; 91. Shaping head; 15. Shaping gripper; 93. Shaping winding column; 95. Wire insertion groove; 6. Resistance wire cutting mechanism; 61. Cutting cylinder; 6 2. Cutting blade; 4. Automatic feeding mechanism; 411 Feeding motor; 414. First bevel gear; 413. Feeding rod; 412. Second bevel gear; 415. Swing rod; 416. Drive connecting block; 420. Limiting clamp; 419. U-shaped groove; 417. Product positioning head; 10. Automatic stacking mechanism; 103. Rotary table; 102. Stacking rod; 101. Positioning gripper; 18. Finished resistance wire; 181. First wire end; 182. Second wire end. Detailed Implementation

[0054] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0055] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0056] like Figures 1-11 As shown, this utility model provides an automatic forming device for resistance wire of a protector, including a housing 3. The housing 3 is used to install and support the internal mechanisms of the device. A protective cover 2 is installed on the top of the housing 3 to protect the internal working mechanisms, prevent external dust from entering, and also to provide sound insulation and protect the operator's safety. The automatic wire feeding rack 1 is used to place the resistance wire roll 100. It is set on the outside of the housing 3 to avoid the resistance wire roll 100 occupying the internal space of the housing 3 and to facilitate replacement and maintenance. The automatic wire feeding rack 1 includes a main support column 1009. A wire feeding motor 1001 is installed on the top of the main support column 1009. A take-up wheel 1002 is installed at the output end of the wire feeding motor 1001. The resistance wire roll 100 is wound on the take-up wheel 1002 and fed out by the wire feeding motor 1001 to achieve smooth release of the resistance wire. A first horizontal column 1003 is vertically installed on one side of the main support column 1009. A guide wheel 1004 is installed on the first horizontal column 1003. The guide wheel 1004 is used to change the direction of movement of the resistance wire and stabilize its running trajectory.

[0057] At least two second transverse columns 1005 are vertically installed on the other side of the main support column 1009. A floating guide rod 1007 is arranged between the at least two second transverse columns 1005. A tensioning slider 1008 is installed on the floating guide rod 1007, and a tensioning wheel 1006 is installed on the tensioning slider 1008. The tensioning wheel 1006 applies appropriate tension to the resistance wire to ensure stable output of the resistance wire during the wire feeding process. After passing through the guide wheel 1004 and the tensioning wheel 1006, the resistance wire is output and finally fed into the automatic wire feeding mechanism 5.

[0058] The automatic wire feeding mechanism 5 is installed on the upper surface of the machine housing 3 and connected to the automatic wire feeding frame 1, and is used to draw out and transport the resistance wire from the resistance wire roll 100.

[0059] The automatic wire feeding mechanism 5 includes a first servo reciprocating drive mechanism 54, which is fixedly mounted on the housing 3 and is used to drive the linkage mounting block 53 to perform reciprocating motion. The linkage mounting block 53 is mounted on the power end of the first servo reciprocating drive mechanism 54, and its reciprocating motion realizes the forward and backward movement of the wire feed.

[0060] At least two linkage rods 55 have one end fixedly connected to the linkage mounting block 53, and the other end fixedly connected to both sides of the wire feeding slider 52, so that the wire feeding slider 52 reciprocates synchronously with the linkage mounting block 53. The wire feeding bracket 51 is fixedly mounted on the housing 3. The wire feeding bracket 51 is provided with wire feeding guide rods, and each wire feeding guide rod is provided with two springs 56 to limit and buffer the movement of the wire feeding slider 52 on the guide rod. The wire feeding slider 52 is slidably mounted on the wire feeding guide rod and located between the two springs 56 so as to move back and forth stably during driving.

[0061] The wire feeding spool 17 is located at the output end of the wire feeding bracket 51 and is used to guide the fed resistance wire and accurately deliver it to the automatic spiral forming mechanism 7. The wire feeding slider 52 contains an electromagnet and a metal positioning block. The resistance wire passes between the metal positioning block and the electromagnet. When the electromagnet is energized, it attracts the metal positioning block and presses the resistance wire, achieving precise feeding or stopping of the resistance wire. A wire groove is formed between the metal positioning block and the electromagnet to accurately position the resistance wire and prevent slippage during feeding.

[0062] The automatic spiral forming mechanism 7 is installed on the housing 3 and located on one side of the automatic wire feeding mechanism 5. It is used to wind the fed resistance wire into a spiral shape according to the set pitch and diameter.

[0063] The automatic spiral forming mechanism 7 includes a main support 14, on which a second servo reciprocating drive mechanism 12 is mounted. An L-shaped mounting plate 13 is provided at the power end of the second servo reciprocating drive mechanism 12. A first drive motor 10003 is mounted on the L-shaped mounting plate 13, and a first drive wheel is mounted at the output end of the first drive motor 10003. A rotating cylinder 74 is provided on the L-shaped mounting plate 13, and a first driven wheel 71 is mounted on the rotating cylinder 74. The first drive wheel and the first driven wheel 71 are connected by a first transmission belt for power transmission.

[0064] A first telescopic shaft is installed inside the rotating cylinder 74, which can move up and down relative to the rotating cylinder 74. Guide grooves 75 are provided on both sides of the rotating cylinder 74. Guide sliders 761 are installed on the first telescopic shaft at positions corresponding to the guide grooves 75, and the guide sliders 761 can slide up and down within the guide grooves 75 to ensure stable linear movement of the telescopic shaft. A lifting drive rod 72 is connected to the top of the first telescopic shaft, and a first lifting drive cylinder 73 is connected to the top of the lifting drive rod 72. The first lifting drive cylinder 73 is fixedly mounted on the L-shaped mounting plate 13 via a cylinder fixing bracket and is used to drive the first telescopic shaft to move up and down.

[0065] A positioning shaft 76 is provided at the bottom of the first telescopic shaft. A winding screw 77 is connected to the bottom of the positioning shaft 76. The winding screw 77 passes through the positioning shaft 76 and can extend to the lower end face of the positioning shaft 76 for winding the resistance wire. Corresponding to the bottom of the winding screw 77, a second telescopic shaft 19 is fixedly installed on the housing 3. The bottom of the second telescopic shaft 19 is driven to move up and down by a second lifting drive cylinder 16. The second telescopic shaft 19 is provided with a relief shaft hole 20 at the position corresponding to the winding screw 77, so that the winding screw 77 can be inserted into the relief shaft hole 20 when descending. The lower end face of the positioning shaft 76 is provided with a concave and convex wire retaining groove for accurately positioning and clamping one end of the resistance wire.

[0066] After one end of the resistance wire is inserted into the wire slot, the swing block 5005 on one side bends one end of the resistance wire to form the first wire head 181. The bent first wire head 181 cooperates with the wire slot on the positioning shaft 76 to achieve locking and fixation.

[0067] The first lifting drive cylinder 73 drives the winding screw 77 to the ejected state, while the rotating cylinder 74 and the positioning shaft 76 rotate and rise during the winding process, thereby winding the resistance wire spirally onto the winding screw 77 from bottom to top. After winding, the resistance wire cutting mechanism 6 drives the resistance wire to be ejected and cut at a predetermined position, forming a second wire end on the wound resistance wire 18. Subsequently, the locking state between the first wire end 181 and the wire slot is unlocked by rotating the rotating cylinder 74 and the positioning shaft 76 in the opposite direction.

[0068] The resistance wire cutting mechanism 6 includes a cutting cylinder 61 and a cutting blade 62. The cutting blade 62 is mounted on the drive end of the cutting cylinder 61 and is perpendicular to the resistance wire to achieve precise cutting of the resistance wire. The swing block 5005 is driven by a second drive motor 5001. A second drive wheel 5002 is mounted on the output end of the second drive motor 5001. A swing drive rod 5003 is located on one side of the second drive wheel 5002, and the swing block 5005 is mounted on the swing drive rod 5003. A second driven wheel 5004 is also mounted on the swing drive rod 5003. The second drive wheel 5002 and the second driven wheel 5004 are connected by a second transmission belt. The reciprocating motion of the second drive motor 5001 drives the swing block 5005 to perform a reciprocating swinging motion, thereby completing the action of bending the resistance wire into the first wire end 181. The swing block 5005 is located on one side of the positioning shaft 76 and can precisely engage with the wire slot on the positioning shaft 76.

[0069] The energized ring-shaped shaping mechanism 9 is mounted on the chassis 3 and slidably mounted on a movable mounting plate 8. The movable mounting plate 8 is driven to reciprocate by the third servo reciprocating drive mechanism 11, so that the energized ring-shaped shaping mechanism 9 can approach or move away from the resistance finished wire 18. The energized ring-type shaping mechanism 9 includes a spindle box 92, a spindle, a shaping motor, an electrode ring, clamping plates, and shaping jaws 15. The spindle box 92 is mounted on a movable mounting plate 8. The spindle passes through the spindle box 92 and is driven by the shaping motor at its tail end to perform a circumferential winding shaping action. The head of the spindle forms a shaping head 91, and the electrode ring is embedded in the shaping head 91. A jaw support is provided on one side of the shaping head 91, and the shaping jaws 15 are mounted on the jaw support and fixed to the movable mounting plate 8. A clamping cavity is formed between the clamping plates and the shaping head 91 to hold the first wire end 181 of the resistance finished wire 18. After the resistance finished wire 18 is clamped by the clamping plates, the shaping head 91 rotates to make the resistance finished wire 18 arc-shaped. A shaping winding post 93 is provided on the end face of the shaping head 91. When the shaping head 91 rotates, the resistance finished wire 18 can be wound on the shaping winding post 93.

[0070] The clamping plate is equipped with a clamping cylinder. The opening and closing of the clamping plate is controlled by the action of the clamping cylinder, thereby clamping or releasing the finished resistor wire 18. A wire insertion groove 95 is formed on the clamping plate. The second wire end of the finished resistor wire 18 is located in the wire insertion groove 95 and is cut by the resistance wire cutting mechanism 6 to form the final finished resistor wire 18.

[0071] The automatic feeding mechanism 4 is mounted on the housing 3 and includes a feeding motor 411 fixed on the housing 3. A first bevel gear 414 is mounted on the output end of the feeding motor 411. The first bevel gear 414 is axially connected to a rotating shaft. One end of the rotating shaft is mated to the first bevel gear 414, and the other end is hinged to the housing 3. A feeding rod 413 is fixedly mounted on the rotating shaft. A second bevel gear 412 is provided on the end face of the feeding rod 413, and the second bevel gear 412 is hinged to the first bevel gear 414. A swing rod 415 is provided on the side of the feeding rod 413 away from the second bevel gear 412. A clamping cylinder is provided inside the swing rod 415. The output end of the clamping cylinder is connected to a drive connecting block 416. The drive connecting block 416 is movably mounted in a stroke groove provided on the swing rod 415, and a limit clamp 420 is fixedly mounted on the drive connecting block 416. The limit clamp 420 has a U-shaped groove 419. A product positioning head 417 is provided on the side of the swing rod 415 corresponding to the U-shaped groove 419. The shaped resistance wire 18 is positioned on the product positioning head 417, and its end face is limited by the limiting clamp 420 to ensure the accuracy and stability of the feeding action.

[0072] The automatic stacking mechanism 10 includes a stacking base with a rotating platform 103 on it. One or more stacking rods 102 are arranged around the upper surface of the rotating platform 103. The top of each stacking rod 102 is tapered to guide the positioning and stacking of the finished resistance wires 18. A positioning gripper 101 is located on one side of one of the stacking rods 102 on the chassis 3. The positioning gripper 101 stably clamps the stacking rod 102 before the finished resistance wires 18 are fed, preventing the stacking rod 102 from shaking during stacking and affecting the neatness of the stack. The finished resistance wires 18 are finally precisely fed onto the stacking rods 102 by the automatic feeding mechanism 4, achieving vertical stacking.

[0073] The working process of this utility model is as follows: First, the automatic wire feeding frame 1 feeds the wire. The wire feeding motor 1001 drives the take-up wheel 1002 to rotate, feeding the resistance wire to the guide wheel 1004. The guide wheel 1004 changes the direction and feeds the wire into the tension wheel 1006. The tension wheel 1006 applies tension to maintain a constant tension in the resistance wire. Then, the resistance wire is fed into the automatic wire feeding mechanism 5. The automatic wire feeding mechanism 5, driven by the first servo reciprocating drive mechanism 54, drives the linkage mounting block 53 and the wire feeding slider 52 to reciprocate, achieving precise feeding of the resistance wire. The resistance wire enters the wire feeding drum 17 through the wire feeding slider 52 and is finally fed to the automatic spiral forming mechanism 7. During the spiral forming process, the resistance wire is fed out from the bottom of the positioning shaft 76. When one end of the resistance wire is inserted into the wire slot at the bottom of the positioning shaft 76, the swing block 5005 bends the resistance wire to form the first wire head 181 through the swing drive action and locks it with the wire slot. Subsequently, the first lifting drive cylinder 73 drives the winding screw 77 to extend. Driven by the rotating cylinder 74 and the positioning shaft 76, the winding screw 77 rotates and rises, winding the resistance wire in a spiral state onto the winding screw 77. After winding, the resistance wire is precisely cut by the cutting mechanism to form a second wire end. By reversing the rotation of the rotating cylinder 74 and the positioning shaft 76, the locking of the first wire end 181 to the wire slot is released. At this time, the winding screw 77 retracts, and the third servo reciprocating drive mechanism 11 drives the movable mounting plate 8 to approach the finished resistance wire 18. The shaping head 91 and clamping plates hold the finished resistance wire 18, and the shaping jaws 15 fix the first wire end 181. Then, the shaping head 91 rotates to wind the finished resistance wire 18 onto the shaping winding column 93. After winding, the electrode ring heats the entire shaping head 91 to heat and shape the finished resistance wire 18, keeping it stable in a ring shape. After shaping, the resistance wire cutting mechanism 6 cuts the resistance wire, separating it into single finished wires. The finished wire passes through the automatic feeding mechanism 4, is positioned by the limiting clamp 420 and the product positioning head 417, and is then flipped and precisely placed into the automatic stacking mechanism 10 by the flipping mechanism. The limiting clamp 420 retracts, and the formed resistance wire 18 falls onto the stacking rod 102, completing the stacking operation. To ensure accurate stacking, the positioning gripper 101 can stably clamp the stacking rod 102 before feeding.

[0074] Through the above specific embodiments, this utility model realizes fully automated operation of resistance wire from wire feeding to forming, shaping, cutting, unloading and stacking. It not only improves production efficiency, but also effectively ensures the consistency of resistance wire forming and the quality of finished products. It has the advantages of compact structure, reliable operation, high degree of automation and convenient maintenance, and significantly improves the intelligence level of resistance wire production process.

[0075] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. An automatic forming device for a protector resistance wire, characterized in that, include: The chassis (3) is used to install and support the internal mechanisms of the device, and a protective cover (2) is installed on the top of the chassis (3); An automatic wire feeding rack (1) is used to hold resistance wire rolls (100), and is located on one side outside the housing (3); An automatic wire feeding mechanism (5) is installed on the upper end face of the machine housing (3) and connected to the automatic wire feeding frame (1) for drawing out and feeding resistance wire from the resistance wire roll (100); An automatic spiral forming mechanism (7) is installed on the housing (3) and located on one side of the automatic wire feeding mechanism (5). It is used to wind the conveyed resistance wire into a spiral shape according to the set pitch and diameter. An energized ring-shaped shaping mechanism (9) is installed on the chassis (3) and located at the forming outlet of the automatic spiral forming mechanism (7). It is used to heat and shape the spiral-formed resistance wire by energizing it into a ring shape. The resistance wire cutting mechanism (6) is installed on the chassis (3) and is perpendicular to the output end of the automatic wire feeding mechanism (5) to cut the finished resistance wire (18) after winding. An automatic feeding mechanism (4) is installed on the chassis (3) to receive the shaped resistance wire (18) and stack it for feeding. An automatic stacking mechanism (10) is installed on the machine housing (3). The automatic feeding mechanism (4) stacks the formed resistance wire (18) onto the automatic stacking mechanism (10).

2. The automatic forming device for the protector resistance wire according to claim 1, characterized in that: The automatic wire feeding frame (1) includes: A main support column (1009) is provided, and a wire feeding motor (1001) is installed on the top of the main support column (1009). A winding wheel (1002) is installed at the output end of the wire feeding motor (1001). The resistance wire coil (100) is wound on the winding wheel (1002) and the wire feeding action is performed by the wire feeding motor (1001). The first horizontal column (1003) is vertically installed on one of the surfaces of the main support column (1009), and a guide wheel (1004) is installed on the first horizontal column (1003); At least two second transverse columns (1005) are vertically installed on the other side of the main support column (1009). A floating guide rod (1007) is provided between the at least two second transverse columns (1005). A tensioning slider (1008) is installed on the floating guide rod (1007). A tensioning wheel (1006) is installed on the tensioning slider (1008). The resistance wire is output and fed to the automatic wire feeding mechanism (5) after passing through the guide wheel (1004) and the tensioning wheel (1006).

3. The automatic forming device for the protector resistance wire according to claim 1, characterized in that: The automatic wire feeding mechanism (5) includes: The first servo reciprocating drive mechanism (54) is fixedly installed on the chassis (3); The linkage mounting block (53) is installed on the power end of the first servo reciprocating drive mechanism (54); At least two linkage rods (55), one end of which is fixedly connected to the linkage mounting block (53), and the other end of which is fixedly connected to both sides of a wire feeding slider (52); A wire feeding bracket (51) is fixedly installed on the machine housing (3). A wire feeding guide rod is provided on the wire feeding bracket (51). Two springs (56) are provided on each wire feeding guide rod. The wire feeding slider (52) is slidably installed on the wire feeding guide rod and located between the two springs (56). The wire feeding spool (17) is located at the output end of the wire feeding bracket (51). The resistance wire is fed through the wire feeding slider (52), the wire feeding bracket (51) and the wire feeding spool (17) toward the automatic spiral forming mechanism (7).

4. The automatic forming device for the protector resistance wire according to claim 3, characterized in that: The wire feeding slider (52) is provided with an electromagnet and a metal positioning block. The resistance wire passes between the metal positioning block and the electromagnet. When the electromagnet is energized, it attracts the metal positioning block and presses the resistance wire to achieve the wire feeding action. A wire groove is formed between the metal positioning block and the electromagnet. The resistance wire is positioned and pressed in the wire groove.

5. The automatic forming device for the protector resistance wire according to claim 1, characterized in that: The automatic spiral forming mechanism (7) includes a main support (14), on which a second servo reciprocating drive mechanism (12) is mounted. An L-shaped mounting plate (13) is provided at the power end of the second servo reciprocating drive mechanism (12). A first drive motor (10003) is mounted on the mounting plate. A first drive wheel is mounted at the output end of the first drive motor (10003). A rotating cylinder (74) is provided on the L-shaped mounting plate (13). A first driven wheel (71) is mounted on the rotating cylinder (74). A first transmission belt is installed between the first drive wheel and the first driven wheel (71). A first telescopic shaft is provided through the rotating cylinder (74). The first telescopic shaft can move up and down relative to the rotating cylinder (74). Guide grooves (75) are provided on both sides of the rotating cylinder (74). A guide slider (761) is provided at the position of the first telescopic shaft relative to the guide groove (75). The guide slider (761) slides up and down in the guide groove (75). A lifting drive rod (72) is connected to the top of the first telescopic shaft. A first lifting drive cylinder (73) is connected to the top of the lifting drive rod (72). The first lifting drive cylinder (73) is fixedly installed on the L-shaped mounting plate (13) by a cylinder fixing bracket. A positioning shaft (76) is provided at the bottom of the first telescopic shaft. A winding screw (77) is connected to the bottom of the first telescopic shaft. The winding screw (77) passes through the positioning shaft (76) and can extend to the lower end face of the positioning shaft (76). A second telescopic shaft (19) is fixedly installed on the housing (3) at the bottom of the winding screw (77). The bottom of the second telescopic shaft (19) is driven to move up and down by a second lifting drive cylinder (16). The second telescopic shaft (19) is provided with a relief shaft hole (20) at the position of the winding screw (77) so that the winding screw (77) can be inserted into the relief shaft hole (20) when it descends. The lower end face of the positioning shaft (76) is provided with a concave and convex wire slot, and the resistance wire is positioned through the wire slot. When one end of the resistance wire is inserted into the wire slot, the end of the inserted resistance wire is bent by the swing block (5005) on one side to form a first wire head (181). The bent first wire head (181) is locked with the wire slot on the positioning shaft (76). At this time, the first lifting drive cylinder (73) keeps the winding rod (77) in the ejected state, while the rotating cylinder (74) and the positioning shaft (76) are in the state of rotating and rising. The resistance wire is wound on the winding rod (77) from bottom to top in a spiral state. After the winding is completed, the resistance wire cutting mechanism (6) pushes out and cuts the resistance wire, and forms a second wire head on the wound resistance finished wire (18). The locking state of the first wire head (181) and the wire slot is unlocked by rotating the rotating cylinder (74) and the positioning shaft (76) in the opposite direction. The resistance wire cutting mechanism (6) includes a cutting cylinder (61) and a cutting blade (62). The cutting blade (62) is installed on the drive end of the cutting cylinder (61) and is arranged perpendicular to the resistance wire.

6. The automatic forming device for the protector resistance wire according to claim 5, characterized in that: The swing block (5005) is driven by a second drive motor (5001). A second drive wheel (5002) is installed at the output end of the second drive motor (5001). A swing drive rod (5003) is provided on one side of the second drive wheel (5002). The swing block (5005) is installed on the swing drive rod (5003). A second driven wheel (5004) is installed on the swing drive rod (5003). A second transmission belt is installed between the second drive wheel (5002) and the second driven wheel (5004). The swing block (5005) is driven to perform a reciprocating swinging action by the reciprocating motion of the second drive motor (5001). The swing block (5005) is located on one side of the positioning shaft (76).

7. The automatic forming device for the protector resistance wire according to claim 1, characterized in that: The energized ring-shaped shaping mechanism (9) is slidably mounted on a movable mounting plate (8). The movable mounting plate (8) is driven to reciprocate by a third servo reciprocating drive mechanism (11), so that the energized ring-shaped shaping mechanism (9) can approach or move away from the resistor finished wire (18). The energized ring-shaped shaping mechanism (9) includes a spindle box (92), a spindle, a shaping motor, an electrode ring, clamping plates, and shaping jaws (15). The spindle box (92) is mounted on the movable mounting plate (8). The spindle passes through the spindle box (92) and is driven by the shaping motor at its tail end to perform a circumferential winding shaping action. The head of the spindle forms a shaping head (91). The electrode ring is embedded in the shaping head (91). A jaw support is provided on one side of the shaping head (91). 15) Installed on the gripper bracket, the gripper bracket is fixedly installed on the movable mounting plate (8), a clamping cavity is formed between the clamping plate and the shaping head (91), the shaping gripper (15) is used to clamp the first wire end (181) of the resistor finished wire (18), the resistor finished wire (18) is clamped by the clamping plate and then the shaping head (91) is rotated to make the resistor finished wire (18) arc-shaped, and a clamping cylinder is also provided in the shaping head (91), the clamping plate is driven by the clamping cylinder.

8. The automatic forming device for the protector resistance wire according to claim 7, characterized in that: The end face of the shaping head (91) is provided with a shaping winding post (93). When the shaping head (91) rotates, the resistance finished wire (18) is wound on the shaping winding post (93). A wire insertion groove (95) is formed on the clamping plate. The second wire end of the resistance finished wire (18) is located in the wire insertion groove (95) and the resistance wire is cut by the resistance wire cutting mechanism (6) to form the second wire end.

9. The automatic forming device for the protector resistance wire according to claim 1, characterized in that: The automatic feeding mechanism (4) includes a feeding motor (411) fixed on the housing (3), a first bevel gear (414) is installed at the output end of the feeding motor, a rotating shaft is axially connected to the first bevel gear (414), one end of the rotating shaft is connected to the first bevel gear (414), the other end of the rotating shaft is hinged to the housing (3), a feeding rod (413) is fixedly installed on the rotating shaft, and a second bevel gear (412) is provided on the end face of the feeding rod, the second bevel gear (412) is hinged to the first bevel gear (414); The feeding rod (413) is provided with a swing rod (415) on the side away from the second bevel gear (412). A clamping cylinder is provided in the swing rod (415). A drive connecting block (416) is provided at the output end of the clamping cylinder. The drive connecting block (416) is movably installed in the stroke groove provided on the swing rod (415). A limiting clamp (420) is fixedly installed on the drive connecting block (416). The limiting clamp (420) has a U-shaped groove (419). A product positioning head (417) is provided on the side of the swing rod (415) corresponding to the U-shaped groove (419). The shaped resistance wire (18) is positioned on the product positioning head (417) and the end face is limited by the limiting clamp (420) on one side.

10. The automatic forming device for the protector resistance wire according to claim 1, characterized in that: The automatic stacking mechanism (10) includes a stacking base, on which a rotating platform (103) is provided. One or more stacking rods (102) are arranged around the upper surface of the rotating platform (103). The top of the stacking rod (102) is conical. A positioning gripper (101) is provided on one side of one of the stacking rods (102) on the housing (3). The positioning gripper (101) is used to stabilize the stacking rod (102). The finished resistance wire (18) is stacked on the stacking rod (102) by the automatic unloading mechanism (4).

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