Thread end pulling mechanism

Abstract

The utility model relates to the field of winding hitching legs of inductors, in particular to a wire end pulling mechanism which is used for tilting a starting section of a flat coil. The wire end shifting mechanism is of a split structure composed of flat coil pulling devices, a carrying jig and a wire shifting device, the flat coil pulling devices are distributed outside the two sides of the carrying jig and pull an initial section out of a magnetic core to enable the initial section to be stripped outwards, and the wire shifting device is arranged below the carrying jig and is used for pulling the initial section out of the magnetic core to enable the initial section to be stripped outwards. The wire shifting device guides the flat coil on the carrying jig to enable the flat coil to pass through the magnetic core so as to enable the initial section to correspond to the flat coil pulling device; the flat coil pulling device is independently arranged outside the carrying jig, when the wire shifting device shifts wires, a margin space exists between the wire shifting device and the flat coil pulling device, the flat coil pulling device cannot be touched when the wires are shifted, the flat coil pulling device does not need to execute actions needing to avoid the wire shifting device, in the assembling process, production procedures are reduced, and in addition, the production efficiency is improved. And the split structure is easier to maintain.

Description

Technical Field

[0001] The utility model relates to the field of inductor winding and hanging pins, in particular to a wire-pulling head mechanism. Background Art

[0002] Inductor is an electrical appliance composed of a magnetic core, a coil and a frame.

[0003] Application No. 202211360465.9 is entitled "Electromagnetic Component Hanging Device and Winding Hanging Integrated Device". In this device, according to the specification, Figure 18-19 It can be seen that the thread end stripping mechanism is an integrated structure. The advantage of this structure is that it has high space utilization and has superior advantages in terms of volume.

[0004] However, there is a problem with this integrated structure, which is that its efficiency is too low. Since the structure is extremely compact, when performing an action, in order to avoid affecting the normal use of other surrounding mechanisms, other mechanisms are required to make an evasive action. In short, too many actions lead to too low production efficiency. In addition, the compactness of the structure makes maintenance extremely difficult. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a thread-pulling head mechanism, which is composed of a plurality of split structures, so that the actions between them do not affect each other, reducing the process actions required for production and making maintenance simpler.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a wire pulling head mechanism, which is used to lift the starting section of the flat coil; it is characterized in that the wire pulling head mechanism is a split structure composed of a flat coil pulling device, a loading fixture, and a wire pulling device. The flat coil pulling device is distributed on both sides of the loading fixture, and the starting section is pulled outside the magnetic core so that the starting section is peeled off. The wire pulling device is arranged below the loading fixture. The wire pulling device guides the flat coil on the loading fixture so that the flat coil passes through the magnetic core so that the starting section corresponds to the flat coil pulling device.

[0007] Furthermore, the loading fixture has a positioning groove suitable for constraining the magnetic core, and a magnet is provided at the bottom of the positioning groove.

[0008] Furthermore, the flat coil pulling device includes a first multi-axis motion component, pneumatic fingers, and a pair of thread end clamps installed on the clamping part of the pneumatic fingers. Under the action of the pneumatic fingers, the two thread end clamps move toward each other and are pulled outward through the clamping starting section.

[0009] Furthermore, it also includes a magnetic core clamping device, which is composed of a rotary lifting cylinder, a fixed block, and a stop screw. The stop screw is fixed on one end of the fixed block, and the other end of the fixed block is connected to the piston rod of the rotary lifting cylinder. The stop screw is driven by the rotation of the fixed block and moves on the magnetic core.

[0010] Furthermore, the wire-pulling device includes a fixed rack, a gear sleeve, a fixed block, and a wire-pulling shaft. A shaft is provided at the lower end of the loading fixture. The gear sleeve is stacked on the shaft. The gear sleeve is located between two fixed racks. The fixed rack is meshed with the gear. The fixed block is sleeved on the barrel part of the gear sleeve. The fixed block rotates with the rotation of the gear sleeve. The wire-pulling shaft pulls the end section to cause the flat coil to rotate on the magnetic core.

[0011] Furthermore, at least one pair of fixed racks is provided, and the racks are staggered up and down with the teeth facing each other.

[0012] Beneficial effects of the utility model:

[0013] The flattened coil pulling device of the utility model is independent of the loading fixture. In short, when the wire pulling device is pulling the wire, there is a margin space between each other. When pulling the wire, the flattened coil pulling device will not be touched. Therefore, the flattened coil pulling device does not need to perform the action of avoiding the wire pulling device. Therefore, the production process is reduced during the assembly process. In addition, the split structure is easier to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional picture of the magnetic core after it is wound with a flat coil.

[0015] Figure 2 An exploded view of the flat coil after the initial section has been separated.

[0016] Figure 3 This is a three-dimensional picture of the bobbin after it is mounted on the core and after the pins are wound.

[0017] Figure 4 It is a stereogram of the utility model.

[0018] Figure 5 It is a three-dimensional diagram of the thread dialing head mechanism.

[0019] Figure 6 It is a three-dimensional diagram of another viewing surface of the thread dialing head mechanism.

[0020] Figure 7 This is a three-dimensional diagram of the loading fixture.

[0021] Figure 8 It is a three-dimensional diagram of a pair of thread clamps.

[0022] Fig. 9It is a three-dimensional diagram of the wire dialing device.

[0023] Fig.10 yes Fig. 9 An enlarged schematic diagram of point A.

[0024] Fig.11 It is a three-dimensional diagram of the hanging foot mechanism.

[0025] Fig.12 It is a partial schematic diagram of the hanging foot mechanism.

[0026] Fig.13 It is a three-dimensional diagram of the coil clamp and the fixing fixture.

[0027] Fig.14 yes Fig.13 An enlarged schematic diagram of point B.

[0028] Fig.15 It is a relationship diagram between the clamping mechanism and the fixing fixture.

[0029] Fig.16 It is a three-dimensional diagram of the thread trimming and clamping device.

[0030] Fig.17 It is the internal structure diagram of the thread trimming and clamping device.

[0031] Fig.18 It is an exploded schematic diagram of the wire trimming and clamping device.

[0032] Fig.19 yes Fig.18 Enlarged schematic diagram of point C.

[0033] Fig. 20 It is a three-dimensional diagram of the entire line mechanism.

[0034] Fig.21 This is a three-dimensional diagram of the flat coil after the wire-straightening mechanism has straightened the wire. DETAILED DESCRIPTION

[0035] The wire winding mechanism of this embodiment is an automated device for preparing inductors. The various forms involved in the assembly of the inductor components are shown in the following figure:

[0036] The magnetic core has a frame structure, and two side columns 1C constituting the magnetic core need to be respectively wound with spirally distributed flat coils 2A. In some embodiments, two independent flat coils 2A are respectively wound on the two side columns 1C.

[0037] The result after winding is as follows Figure 1 Show.

[0038] Figure 2It is an exploded schematic diagram after the starting section 2C of the flat coil 2A is separated. It is to meet the basic condition that the subsequent starting section 2C can be smoothly pulled onto the frame 3A. The frame 3A is provided with a pin 3A', and the winding object of the starting section 2C is the pin 3A'.

[0039] Figure 3 After the skeleton 3A is installed on the magnetic core, the starting section 2C and the ending section 2B of the flat coil 2A are wound on the pin 3A', and the three-dimensional diagram after the excess flat coil 2A is cut off forms an inductor that can be directly used.

[0040] This embodiment shows an implementation method of winding four pins 3A' with a double flat coil 2A. Of course, this implementation method is not a further limitation of the present invention, but is only an implementation method proposed to make the explanation of the present invention more comprehensive. According to the needs, six pins 3A', eight pins 3A', etc., or four flat coils 2A, eight flat coils 2A, etc. can also be used.

[0041] like Figure 4 As shown, this specific embodiment includes the following parts:

[0042] Winding mechanism 1, wire pulling head mechanism 2, foot hanging mechanism 3, wire straightening mechanism 4.

[0043] The winding mechanism 1 is a prior art, and its specific composition structure and operating principle are as shown in the winding device (CN 113192751B). Therefore, the structure of the winding mechanism 1 is not described in detail in this solution.

[0044] The winding of the flat coil 2A on the magnetic core is a spiral stacking. Figure 2 It can be seen that the starting section 2C of the flat coil 2A is close to the bottom of the second closed portion 1A.

[0045] like Figure 5-6 As shown, the thread-drying head mechanism 2 provided in this embodiment is to perform the following steps: Figure 2 The starting section 2C of the flat coil 2A is pulled in the direction of the arrow to separate the starting section 2C from the magnetic core to the outside of the second closing portion 1A.

[0046] The wire pulling head mechanism 2 includes a loading fixture 21, a flat coil pulling device, and a magnetic core pressing device.

[0047] like Figure 7 As shown, specifically, the loading fixture 21 has a positioning groove 21a of the first closed portion 1B suitable for constraining the magnetic core, and a magnet 21b is provided at the bottom of the positioning groove 21a. In specific use, after the magnetic core with the flat coil 2A falls into the positioning groove 21a, the magnetic core is fixed by the magnet 21b.

[0048] The core pressing device is located above the core and is used to press the core downward. The core is held in an upright position by the positioning groove 21a, which can largely resist the imbalance caused by the starting section 2C of the flat coil 2A being pulled out from the frame 3A in a left-right manner.

[0049] like Figure 5-6 As shown, the magnetic core clamping device is composed of a rotary lifting cylinder 23a, a fixed block 23b, and a stop screw 23c. The stop screw 23c is fixed to one end of the first fixed block 23b, and the other end of the first fixed block 23b is connected to the piston rod of the rotary lifting cylinder 23a. The stop screw 23c is driven by the rotation of the first fixed block 23b and moves on the second closed part 1A of the magnetic core, and the second closed part 1A is pressurized by the rotary lifting cylinder 23a.

[0050] The flat coil pulling device is located on both sides of the magnetic core, corresponding to the flat coil 2A wound on the side column 1C. The flat coil pulling device includes a first multi-axis motion component 22a, a pneumatic finger 22b, and a pair of thread end clamps 22c installed on the clamping part of the pneumatic finger 22b. Under the action of the pneumatic finger 22b, the two thread end clamps 22c move toward each other. The first multi-axis motion component 22a drives the pneumatic finger 22b to move in multiple axial directions, for example, it can move or rotate in the X, Y, and Z directions. The first multi-axis motion component 22a drives the thread end clamps 22c to meet multiple action methods such as avoidance and contact involved in the production process.

[0051] like Figure 8 As shown, the thread end clamp 22c is parallel to the starting section 2C, and the surface of the lower thread end clamp close to one end of the starting section 2C has a sloped thread starting surface 22c'. Under the operation of the first multi-axis motion component 22a, the thread starting surface 22c' cuts into between the starting section 2C and the flat coil 2A located under the starting section 2C, so that the starting section 2C is tilted, and the starting section 2C is peeled off from the coil;

[0052] Next, the upper thread end clamp and the lower thread end clamp hold the starting section 2C and open it in the direction of the arrow (as shown in FIG. Figure 2 As shown), before the opening process, the thread end clamp 22c first passes through the first multi-axis motion component 22a to pull the starting section 2C out of the magnetic core in a nearly or completely parallel posture, and then the first multi-axis motion component 22a adjusts the flatness of the starting section 2C by rotation, which can prevent the starting section 2C from failing to smoothly enter the clamping process of the subsequent hanging foot process.

[0053] Specifically, the opening is that the starting section 2C is pulled out of the side column 1C in a bird's eye view.

[0054] After the flat coil 2A is wound on the side pole 1C, the direction of the starting section 2C is the same as that of the ending section 2B (e.g. Figure 2 As shown), at this time, the starting section 2C and the line starting surface 22c' are opposite. In order to keep the line starting surface 22c' and the starting section 2c in a relative state, a wire drawing device 24 is provided below the loading fixture 21, as shown in FIG. Figure 9-10 As shown, the wire-pulling device 24 includes a fixed rack 24a, a gear sleeve 24c, a second fixed block 24b, a wire-pulling shaft 24d, a rack mounting seat 24e, and a sliding assembly 24f. In the embodiment, a pair of fixed racks 24a and gear sleeves 24c are provided, and a shaft is provided at the lower end of the loading fixture 21. The gear sleeve 24c is sleeved on the shaft in a stacked manner, and the second fixed block 24b is sleeved on the barrel portion of the gear sleeve 24c. The second fixed block 24b rotates with the rotation of the gear sleeve 24c. Rotation, the wire-pulling shaft 24d is cylindrical, and the wire-pulling shaft 24d extends along the height direction of the loading fixture 21, therefore, the wire-pulling shaft 24d is close to the peripheral surface of the loading fixture 21 and performs rotational motion, the fixed rack 24a is mounted on the rack mounting seat 24e, and the fixed rack 24a is staggered up and down in a relative posture of the teeth, in addition, the fixed racks 24a are arranged at intervals, the gear sleeve 24c is located between the two fixed racks 24a, and the fixed rack 24a is meshed with the gear;

[0055] When in use, the sliding component 24f performs linear motion through the fixed rack 24a, causing the gear sleeve 24c to rotate and drive the wire-pulling shaft 24d to perform circular motion, thereby shifting the tail end 2B of the flat coil 2A, causing the flat coil 2A to rotate on the magnetic core (there is a gap between the flat coil 2A and the side column 1C); thus, it can be seen that the composition scheme of the wire-pulling head mechanism is composed of multiple split structures, and the split structure has a spacious space. In short, because the structure is transferred from overall integration to decentralized combination, it can reduce the interference problem caused by deliberately executing multiple strokes to overcome the overly compact structure.

[0056] like Figure 11-15 As shown, after entering the hanging mechanism 3, a skeleton 3A has been assembled on the second closed part 1A, and pins 3A' are provided on the skeleton 3A. In the embodiment, four pins 3A' are provided. The hanging mechanism 3 includes a fixing fixture 31, a plurality of coil clamping heads 32 and a first multi-axis motion platform 33. The magnetic core with the skeleton 3A is transferred to the fixing fixture 31, and the fixing fixture 31 is surrounded by the coil clamping heads 32. The coil clamping heads 32 correspond to each pin 3A' respectively. The first multi-axis motion platform 33 has a number corresponding to the coil clamping heads 32, and controls the coil clamping heads 32 to wind the starting section 2C and the end 2B of the flat coil 2A on the pins 3A' respectively.

[0057] like Fig.15As shown, since the skeleton 3A is only mounted on the second closed portion 1A, when the pin 3A' is wound, in order to prevent the skeleton 3A from falling off the magnetic core, a clamping mechanism for positioning the skeleton 3A is also provided, and the clamping mechanism includes a pressure strip 34a and a second multi-axis motion platform 34b. The second multi-axis motion platform 34b drives the pressure strip 34a to move linearly to press the skeleton 3A onto the magnetic core.

[0058] The foot hanging mechanism 3 also includes a wire cutting and clamping device 35, which is used to transfer the magnetic core after the flat coil 2A is wound on the frame 3A, and to cut off the redundant flat coil 2A on the frame 3A during the transfer process.

[0059] The wire trimming and clamping device 35 is driven by the second multi-axis motion assembly 36 to move back and forth between the hanging foot mechanism 3 and the wire straightening mechanism 4; in addition, the entire wire trimming and clamping are concentrated at the lower end of the wire trimming and clamping device 35, and the entire inductor is moved by clamping the frame 3A.

[0060] like Figure 16-19 As shown, the wire trimming and clamping device 35 includes a base 35a and a first telescopic cylinder 35b installed on two opposite sides of the base 35a, a second telescopic cylinder 35c is provided on the top of the base 35a, a push plate 35d, a pair of clamping claws 35f, and a clamping portion 35e are provided inside the base 35a, an inclined propulsion groove 35d' is provided on the inner side of the lower end of the push plate 35d, and the upper end of the clamping portion 35e cooperates with the inner side of the propulsion groove 35d'. Under the action of the second telescopic cylinder 35c, the two clamping portions 35e are close to each other along the inner side of the propulsion groove 35d', and the clamping portion 35e is located at the inner side of the clamping portion 35 e, and the magnetic core between them is clamped by shortening the distance between the clamping parts 35e; the clamping jaw 35f is L-shaped as a whole, and the clamping jaw 35f has an opening structure for the clamping part 35e to pass through. A blade 35g is provided on the edge of the bottom of the clamping jaw 35f, and the blade 35g and the clamping part 35e are staggered with each other. In short, the clamping jaw 35f is controlled by the first telescopic cylinder 35b and moves toward both sides of the base 35a, so as to cut off the flat coil 2A located outside the clamping part 35e on the skeleton 3A; through the above means, compared with manual shearing, mechanical shearing is faster.

[0061] like Fig. 20 As shown, the wire straightening mechanism 4 performs wire straightening on the winding of the flat coil 2A on the frame 3A. It should be noted that the flat coil 2A only needs to be wound around the pin 3A' of the frame 3A for one circle. In short, after the wire cutting and clamping device 35 cuts the excess flat coil 2A (such as Figure 3 As shown), the cutout of the flat coil 2A is closed so that it can be sufficiently close to the pin 3A' (as shown Fig.21 shown).

[0062] The line-forming mechanism 4 includes a base plate 41 and a material-picking cylinder 43 installed on a rotating cylinder 42. A pair of third multi-axis motion platforms 44 are provided on the base plate 41. A positioning fixture 45 is provided between the third multi-axis motion platforms 44. The inductor is fixed to the positioning fixture 45. The third multi-axis motion platform 44 is provided with corresponding clamping cylinders 46. The clamping end of the clamping cylinder 46 is provided with a wire-pulling head clamp 35f. Through the cooperation of the third multi-axis motion platform 44 and the wire-pulling head clamp 35f, the flat coil 2A is attached to the pin 3A'.

[0063] The wire trimming and clamping device 35 transfers the inductance to the material taking cylinder 43, transfers the inductance to the bottom plate 41 through the rotating cylinder 42, and transfers the inductance to the positioning fixture 45 through the manipulator.

[0064] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A wire pulling head mechanism, which is used to lift the starting section of a flat coil; characterized in that: The wire pulling head mechanism is a split structure consisting of a flat coil pulling device, a loading jig, and a wire pulling device. The flat coil pulling device is distributed on both sides of the loading jig, and the starting section is pulled outside the magnetic core so that the starting section is peeled off. The wire pulling device is arranged below the loading jig. The wire pulling device guides the flat coil on the loading jig so that the flat coil passes through the magnetic core so that the starting section corresponds to the flat coil pulling device.

2. A thread-pulling head mechanism according to claim 1, characterized in that: The loading fixture is provided with a positioning groove suitable for constraining the magnetic core, and a magnet is arranged at the bottom of the positioning groove.

3. A thread-pulling head mechanism according to claim 1, characterized in that: The flat coil pulling device includes a first multi-axis motion component, pneumatic fingers, and a pair of thread end clamps installed on the clamping part of the pneumatic fingers. Under the action of the pneumatic fingers, the two thread end clamps move toward each other and are pulled outward through the clamping starting section.

4. A thread-pulling head mechanism according to claim 1, characterized in that: It also includes a magnetic core clamping device, which is composed of a rotary lifting cylinder, a fixed block, and a stop screw. The stop screw is fixed to one end of the fixed block, and the other end of the fixed block is connected to the piston rod of the rotary lifting cylinder. The stop screw is driven by the rotation of the fixed block and moves on the magnetic core.

5. A thread-pulling head mechanism according to claim 1, characterized in that: The wire-pulling device includes a fixed rack, a gear sleeve, a fixed block, and a wire-pulling shaft. A shaft is provided at the lower end of the loading fixture. The gear sleeve is stacked on the shaft. The gear sleeve is located between two fixed racks. The fixed rack is meshed with the gear. The fixed block is sleeved on the barrel part of the gear sleeve. The fixed block rotates with the rotation of the gear sleeve. The wire-pulling shaft pulls the end section to make the flat coil rotate on the magnetic core.

6. A thread-pulling head mechanism according to claim 5, characterized in that: At least one pair of fixed racks is provided, and the fixed racks are staggered up and down with the teeth facing each other.

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