An automatic bending device for skeleton coils and a production line for skeleton coils

Abstract

The present invention discloses an automated leg bending device for a bobbin coil, comprising an inner-eight bending device and a leg bending device. The inner-eight bending device simultaneously bends the two legs of the bobbin coil, ensuring balanced force on the legs during bending, minimizing the impact on the bobbin coil, achieving high bending angle consistency, and improving quality. Furthermore, the present invention has a wider range of applications. The present invention also discloses a bobbin coil production line, comprising a loading device, a fluxing device, a tinning device, a unloading device, a robotic arm for moving the bobbin coil, and the automated leg bending device for the bobbin coil of the present invention. The bobbin coil production line of the present invention has the advantages of orderly coordination, small footprint, and high production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of coil production equipment, and in particular to an automatic leg bending device for a skeleton coil and a production line for the skeleton coil. Background Art

[0002] Bobbin coils now feature a structure with embedded pins (typically lugs / pins) to optimize the coil winding process. This type of bobbin coil consists of a bobbin, wire, and pins. During processing, one end of the wire must first be connected to one of the pins. After the wire is completely wound around the bobbin, the tail end of the wire must be wound around another pin, and both ends of the wire must be soldered to the two pins.

[0003] Some skeleton coil production lines use a turntable to connect the entire production line in series, such as the coil pin soldering device disclosed in the utility model patent application number CN202220196889.5. Its flux station, soldering station, inspection station and bending station are arranged in sequence around the turntable. By setting a clamping mechanism at each station, the skeleton coil is transferred from the turntable to each station for processing, and then moved back to the turntable to flow to the next process. The various processes of this skeleton coil production line can be carried out simultaneously. Although the production efficiency is higher, it occupies a larger area. The jigs for loading the skeleton coils on the turntable are generally arranged in sequence along the edge of the turntable. At the same station, as the number of skeleton coils being processed simultaneously increases, the size of the required turntable also needs to increase accordingly. The area occupied by the production line increases, which is not conducive to the miniaturization of production equipment.

[0004] Furthermore, after soldering, the pins need to be bent. The consistency of the bending of the bobbin coil pins is one of the criteria for judging the quality of the bobbin coil. Different products use different bobbin coils, and the number, position, and bending angle of the pins on the bobbin coils also vary. Therefore, it is necessary to design a set of bobbin coil processing equipment that suits the company's specific needs to improve production efficiency and yield rate. Summary of the Invention

[0005] In response to the above problems, one of the objectives of the present invention is to provide an automated bending device for skeleton coils with high bending consistency and high efficiency. The second objective of the present invention is to provide a production line for skeleton coils with orderly coordination, small footprint and high production efficiency.

[0006] In order to achieve the above object, the technical solution proposed by the present invention is:

[0007] An automatic leg bending device for a skeleton coil comprises an inner eight bending device and a leg bending device.

[0008] The bent-in-eight device is used to bend the pin into an eight-shaped shape, and includes a first lifting mechanism, a first driving mechanism, a first guide rod, a second guide rod, a first push rod, and a second push rod. The first guide rod is provided with a first push rod and a first sliding hole alternately along its length, and the second guide rod is provided with a second sliding hole and a second push rod alternately along its length. The first guide rod is parallel to the second guide rod, and the first push rod and the second sliding hole correspond one-to-one. The first push rod is inserted into the second sliding hole, and the second push rod corresponds one-to-one to the first sliding hole. The second push rod is inserted into the first sliding hole. The first driving mechanism drives the first and second guide rods to move synchronously and symmetrically, and the first lifting mechanism drives the first and second guide rods to move up and down.

[0009] The leg bending device is used to bend the pins to a certain angle and includes a fifth translation mechanism, a fifth lifting mechanism, a leg bending support, a leg bending rod, a sixth lifting mechanism, and a lower limit plate below the leg bending. The leg bending rod is rotatably mounted on the leg bending support, while the fifth lifting mechanism drives the leg bending support up and down. The fifth translation mechanism drives the leg bending support horizontally. The lower limit plate below the leg bending rod is located below the leg bending rod, and the sixth lifting mechanism drives the lower limit plate below the leg bending.

[0010] Preferably, the inner-eight bending device further includes a positioning plate, which is arranged below the first guide rod and the second guide rod and is used for horizontal positioning of the skeleton coil.

[0011] A bobbin coil production line includes a loading device, a fluxing device, a tinning device, a robotic arm, a unloading device, and an automated leg bending device for the bobbin coils. The robotic arm receives the bobbin coil from the loading device, moves the bobbin coil to the fluxing device to receive flux, moves the bobbin coil to the tinning device to receive tin liquid, moves the bobbin coil to the bending device to bend the legs of the bobbin coil into an "eight" shape, and finally moves the bobbin coil to the unloading device, where the leg bending device bends the legs of the bobbin coil conveyed by the unloading device.

[0012] Preferably, the tin dipping device includes a tin pot, a tin ash box, a tin scraping mechanism, a tin surface detection mechanism and a tin adding mechanism. A plurality of air-avoiding cylinders are formed between the bottom plate and a side plate of the tin pot, which are spaced apart and penetrate the bottom plate of the tin pot, and the upper end surface of the air-avoiding cylinder is higher than the tin surface. The tin scraping mechanism includes a second translation mechanism, a second drive mechanism, a tin scraping main plate, a tin scraping sub-plate and a connecting rod. A plurality of air-avoiding cylinder avoidance grooves are provided on the bottom surface of the tin scraping main plate. One end of the connecting rod is hinged to the moving element of the second translation mechanism, and the other end is fixed with the tin scraping main plate and the tin scraping sub-plate. The second drive mechanism rotates the connecting rod around the hinge point between the connecting rod and the moving element of the second translation mechanism. A tin ash box is provided below the tin outlet and the air-avoiding cylinder of the tin pot. The tin surface detection mechanism is used to detect the height of the tin surface, and the tin adding mechanism is used to inject molten tin into the tin pot.

[0013] Preferably, the flux dipping device includes a flux tank, a plurality of flux cups, a fourth drive mechanism, and a flux pump. The flux tank is provided with a liquid inlet at the top and a liquid outlet at the bottom. The flux pump is connected to the liquid inlet and is used to pump flux into the flux tank. The fourth drive mechanism drives the flux cups to move up and down in the flux tank.

[0014] Preferably, the unloading device includes an unloading jig, a first corner slide, a second corner slide, a fully loaded jig slide, an empty jig slide, a first side-pushing mechanism, a second side-pushing mechanism, a third side-pushing mechanism, and a fourth side-pushing mechanism. The first corner slide is provided with a first inlet and a first outlet, the second corner slide is provided with a second inlet and a second outlet, the first corner slide and the second corner slide are parallel to each other, the empty jig slide is vertically connected between the first inlet and the second outlet, and the fully loaded jig slide is vertically connected between the first outlet and the second inlet. The first side-pushing mechanism and the second side-pushing mechanism are provided at the first corner slide, the first side-pushing mechanism is used to push the unloading jig from the first inlet of the first corner slide to the first outlet, and the second side-pushing mechanism is used to push the unloading jig from the first outlet of the first corner slide into the fully loaded jig slide. The third side pushing mechanism and the fourth side pushing mechanism are arranged at the second corner slide. The third side pushing mechanism is used to push the unloading jig from the second entrance to the second exit of the second corner slide. The fourth side pushing mechanism is used to push the unloading jig from the second exit of the second corner slide into the unloaded jig slide.

[0015] Preferably, the blanking device further includes a first jig positioning mechanism. The blanking jig is provided with a positioning slot, the width of which tapers from its slot opening to its bottom. The first jig positioning mechanism is located on one side of the fully loaded jig slideway and comprises a first positioning member and a tenth translation mechanism that drives the first positioning member into the positioning slot. The contact surface between the first positioning member and the positioning slot is a smoothly curved surface.

[0016] Preferably, the blanking device also includes a second jig positioning mechanism. The first corner slide is provided with a horizontal sliding hole parallel to the first sliding hole. The second jig positioning mechanism includes a track plate, a guide sleeve, a second positioning member, a sliding member, a fixing member, a spring and a tenth driving mechanism. The track plate is arranged below the horizontal sliding hole, and the track plate gradually increases in height from the first inlet direction to the first outlet direction. The guide sleeve is arranged between the track plate and the horizontal sliding hole, the fixing member is fixed to the side wall of the guide sleeve, and the guide sleeve is provided with a vertical sliding hole above the fixing member. The second positioning member is inserted into the guide sleeve, and the lower end of the second positioning member is in sliding contact with the track plate, and the upper end is inserted into the horizontal sliding hole. The sliding member is inserted into the vertical sliding hole and fixedly connected to the second positioning member. One end of the spring is connected to the fixing member, and the other end is connected to the sliding member. The tenth driving mechanism drives the guide sleeve to move horizontally.

[0017] Preferably, a transfer device is provided on one side of the first corner slideway, comprising a seventh translation mechanism, a seventh lifting mechanism, and a transfer jig. The seventh lifting mechanism drives the transfer jig up and down, while the seventh translation mechanism drives the transfer jig horizontally. The transfer jig has a plurality of U-shaped slots that fit with the skeleton coil. When the robotic arm inserts the skeleton coil into the U-shaped slots from the upper sockets, the transfer device transports the skeleton coil to the blanking device and inserts the jig needle of the blanking jig into the inner hole of the skeleton coil from the side sockets of the U-shaped slots.

[0018] Preferably, the robotic arm includes an eighth translation mechanism, an eighth lifting mechanism, an eighth rotation mechanism, a fixed base, a rotating rod, and a jig. The jig has a plurality of jig pins arranged in a row, which can be inserted into the inner hole of the skeleton coil to fix the skeleton coil. The eighth translation mechanism drives the fixed base to move horizontally, the eighth lifting mechanism drives the fixed base to move up and down, the eighth rotation mechanism is fixed to the fixed base, the rotating rod is mounted on the fixed base via a bearing and is driven to rotate by the eighth rotation mechanism, and the jig is fixed to the rotating rod.

[0019] Preferably, a resistance detection device and an image detection device are also provided on one side of the fully loaded fixture slide.

[0020] By adopting the above technical solution, the beneficial effects of the present invention are:

[0021] 1. The automated bending device for the skeleton coil of the present invention bends the pins of the skeleton coil into an "eight" shape toward each other by synchronously and symmetrically moving the first push rod and the second push rod. During bending, the skeleton coil is subjected to force on both sides, and the force is balanced, thereby avoiding the influence of force on the skeleton coil from one side. The bending angle of the pins is highly consistent, which is beneficial to improving product quality. The automated bending device for the skeleton coil of the present invention improves its applicability by providing an "eight-in" bending device and a bending device. It is not only applicable to skeleton coils whose pins only need to be bent 90°, but also to skeleton coils whose pins are bent "eight-in" and have a wider range of applications.

[0022] 2. The production line of the skeleton coil of the present invention realizes the fully automatic assembly of the skeleton coil through the orderly coordination of various devices. The whole process does not require human participation and multiple skeleton coils can be processed simultaneously, with high production efficiency and small footprint. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the skeleton coil before and after the bending legs of the first embodiment.

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the production line of the skeleton coil of Example 1.

[0025] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the middle loading device.

[0026] Figure 4 for Figure 2 Schematic diagram of the three-dimensional structure of the robotic arm.

[0027] Figure 5 for Figure 2 Schematic diagram of the three-dimensional structure of the middle-bend inner eight device.

[0028] Figure 6 for Figure 5 Explosion diagram.

[0029] Figure 7 for Figure 2 Schematic diagram of the three-dimensional structure of the middle and lower feeding device.

[0030] Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure of the first fixture positioning mechanism.

[0031] Figure 9 for Figure 7 Schematic diagram of the three-dimensional structure of the second fixture positioning mechanism.

[0032] Figure 10 Schematic diagram of the three-dimensional structure of the transfer device of Example 1.

[0033] Figure 11 for Figure 2 Schematic diagram of the three-dimensional structure of the middle bending foot device.

[0034] Figure 12 for Figure 2 Schematic diagram of the three-dimensional structure of the medium resistance detection device.

[0035] Figure 13 for Figure 2 Schematic diagram of the three-dimensional structure of the image detection device.

[0036] Figure 14 This is a schematic diagram of the three-dimensional structure of the skeleton coil before and after the bending legs of the second embodiment.

[0037] Figure 15 It is a schematic diagram of the three-dimensional structure of the flux dipping device of the second embodiment.

[0038] Figure 16 This is a schematic diagram of the three-dimensional structure of the tin-dipping loading in Example 2. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] Example 1

[0041] Please refer to Figure 1In this embodiment, two pins are respectively provided on the symmetrical sides of one end of the skeleton coil A, a first pin A1 and a second pin A2 located on the first side, and a third pin A3 and a fourth pin A4 located on the second side, wherein one end of the wire is wound around the first pin A1, and the other end of the wire is wound around the second pin A2.

[0042] Please refer to Figure 2 The production line of the skeleton coil of this embodiment includes: a loading device 10, a robotic arm 11, a flux dipping device 12, a tin dipping device 13, an automatic bending device for the skeleton coil, a unloading device 16, a resistance detection device 20 and an image detection device 21. Among them, the automatic bending device for the skeleton coil includes an inner bending device 14 and a bending device 15. The production line of the skeleton coil of this embodiment moves the skeleton coil A through the robotic arm 11. Compared with the prior art that uses a turntable to achieve the movement of the skeleton coil A, the production line of this embodiment occupies a smaller area. The number of skeleton coils A transferred at one time by the robotic arm 11 can be set according to the needs. For example, in this embodiment, the robotic arm 11 can transfer 12 skeleton coils A at one time. The production line of the skeleton coil of this embodiment is not only conducive to the miniaturization of the skeleton coil production equipment, but also ensures the production efficiency of the skeleton coil A.

[0043] Please refer to Figure 3 The loading device 10 of this embodiment includes a loading translation mechanism 101, a loading lifting mechanism 102, and a loading fixture 103. The loading fixture 103 has a plurality of U-shaped slots 1031 that fit into the skeleton coil A. Both the loading translation mechanism 101 and the loading lifting mechanism 102 are pneumatically driven dual linear guide rail mechanisms. The loading lifting mechanism 102 is fixed to the moving element of the loading translation mechanism 101, and the loading fixture 103 is fixed to the moving element of the loading lifting mechanism 102.

[0044] The loading device 10 is used to remove the skeleton coil A from the conveyor fixture 22 to facilitate insertion and removal by the robotic arm 11. The specific operation is as follows: the loading translation mechanism 101 and the loading lifting mechanism 102 move the loading jig 103 to below the skeleton coil A on the conveyor fixture 22. The loading lifting mechanism 102 drives the loading jig 103 upward, allowing the skeleton coil A to be inserted into the U-shaped slot 1031 through the upper socket of the U-shaped slot 1031. The loading translation mechanism 101 then drives the loading jig 103 backward to remove the skeleton coil A from the jig needle of the conveyor fixture 22.

[0045] Please refer to Figure 4The robotic arm 11 of this embodiment includes: an eighth translation mechanism 111, an eighth lifting mechanism 112, an eighth rotation mechanism 113, a fixed seat 114, a rotating rod 115 and a jig 116. The jig 116 has a plurality of jig needles 1161 arranged in the same row. The eighth translation mechanism 111 and the eighth lifting mechanism 112 both adopt linear modules with high positioning accuracy. The eighth lifting mechanism 112 is fixed on the slide of the eighth translation mechanism 111, and the fixed seat 114 is fixed on the slide of the eighth lifting mechanism 112. Bearings are installed at both ends of the fixed seat 114, and the two ends of the rotating rod 115 are respectively installed in the two bearings. The eighth rotation mechanism 113 is fixed on the fixed seat 114, and its output shaft is connected to the rotating rod 115 through a coupling.

[0046] The eighth translation mechanism 111 and the eighth lifting mechanism 112 drive the jig 116 to move, allowing the jig needle 1161 of the jig 116 to insert into the inner hole of the bobbin coil A from the side socket of the loading jig 103, thereby securing the bobbin coil A to the jig 116. Subsequently, the eighth lifting mechanism 112 drives the jig 116 upward to remove the bobbin coil A from the U-shaped slot 1031. The robotic arm 11 then moves the bobbin coil A to the fluxing device 12, where the first and second pins A1 and A2 are dipped in flux. The bobbin coil A is then moved to the tinning device 13, where the first and second pins A1 and A2 are dipped in tin.

[0047] Please refer to Figure 5 and Figure 6The inner-bend eight device 14 of this embodiment includes: a first lifting mechanism 141, a first driving mechanism 142, a first guide rod 143, a second guide rod 144, a first push rod 145, a second push rod 146, and a positioning plate 147. The first lifting mechanism 141 includes a support base 1411, a lifting cylinder 1412 fixed to the support base 1411, two parallel linear guide rails 1413 fixed to the support base 1411, and a mounting base 1414 connected to the moving elements of the two linear guide rails 1413 and the piston rod of the lifting cylinder 1412. First guide rod 143 is provided with first push rods 145 and first sliding holes 1431 alternately along its length. Second guide rod 144 is provided with second sliding holes 1441 and second push rods 146 alternately along its length. First guide rod 143 and second guide rod 144 are arranged parallel to each other, with first push rod 145 corresponding to second sliding holes 1441, and second push rod 146 corresponding to first sliding holes 1431. First push rod 145 is inserted into second sliding holes 1441, and second push rod 146 is inserted into first sliding holes 1431. First drive mechanism 142 is fixed to fixed base 114 and drives first guide rod 143 and second guide rod 144 to move synchronously and symmetrically. Positioning plate 147 is provided below first guide rod 143 and second guide rod 144 to horizontally position bobbin coil A. Because the bobbin coil A of this embodiment has two pins on opposite sides, a plurality of U-shaped slots 1471 extending through the side of the positioning plate 147 are provided. This allows the bobbin coil A to rest on the upper surface of the positioning plate 147, with the third and fourth pins A3 and A4 of the bobbin coil A inserted into the U-shaped slots 1471. The inner-bending device 14 of this embodiment simultaneously bends the first and second pins A1 and A2, minimizing bending angle errors and facilitating high bending speed.

[0048] In this embodiment, the first driving mechanism 142 includes: a first cylinder 1421, a second cylinder 1422, a first connecting block 1423 and a second connecting block 1424. A first guide hole 1414a and a second guide hole 1414b are respectively opened on both sides of the mounting base 1414. The two ends of the first guide rod 143 are respectively inserted into the first guide holes 1414a on both sides, and the two ends of the second guide rod 144 are respectively inserted into the second guide holes 1414b on both sides. The first cylinder 1421 and the second cylinder 1422 are both fixed on the mounting base 1414. The piston rod of the first cylinder 1421 is fixedly connected to the first guide rod 143 through the first connecting block 1423, and the piston rod of the second cylinder 1422 is fixedly connected to the second guide rod 144 through the second connecting block 1424. Of course, the first driving mechanism 142 of this embodiment may also adopt a forward and reverse screw mechanism, which includes a forward and reverse screw with both ends mounted on a fixed seat 114 through bearings, a left-hand nut and a right-hand nut threadedly connected to the forward and reverse screw, and a rotating cylinder or motor for driving the forward and reverse screw forward and reverse, the first guide rod 143 is fixedly connected to the left-hand nut, and the second guide rod 144 is fixedly connected to the right-hand nut.

[0049] After tinning is completed, the robot arm 11 flips the skeleton coil A so that the first pin A1 and the second pin A2 are on the top, and the third pin A3 and the fourth pin A4 are on the bottom. At the same time, the robot arm 11 places the skeleton coil A on the upper surface of the positioning plate 147, and the first lifting mechanism 141 drives the first guide rod 143 and the second guide rod 144 to descend, so that the first pin A1 and the second pin A2 are inserted between the two adjacent first push rods 145 and the second push rod 146. The first driving mechanism 142 drives the first guide rod 143 and the second guide rod 144 to move synchronously and symmetrically, and the two adjacent first push rods 145 and the second push rod 146 move toward each other, bending the first pin A1 and the second pin A2 into an eight-shaped shape toward each other, and then the inner eight-shaped bending device 14 is reset, and the robot arm 11 moves the inner eight-shaped skeleton coil A to the unloading device 16.

[0050] Please refer to Figure 7 The unloading device 16 of this embodiment includes: an unloading fixture 161, a first corner slide 162, a second corner slide 163, a fully loaded fixture slide 164, an empty fixture slide 165, a first side pushing mechanism 166, a second side pushing mechanism 167, a third side pushing mechanism 168 and a fourth side pushing mechanism 169.

[0051] The first corner slide 162 is provided with a first inlet 1621 and a first outlet 1622, the second corner slide 163 is provided with a second inlet 1631 arranged opposite to the first outlet 1622, and a second outlet 1632 arranged opposite to the first inlet 1621. The first corner slide 162 and the second corner slide 163 are parallel to each other, the empty fixture slide 165 is vertically connected between the first inlet 1621 and the first outlet 1622, and the fully loaded fixture slide 164 is vertically connected between the first outlet 1622 and the second inlet 1631.

[0052] The first corner slide 162 defines a third sliding hole 1623 and a fourth sliding hole 1624. A first side-pushing mechanism 166 and a second side-pushing mechanism 167 are disposed below the first corner slide 162. The first side-pushing mechanism 166 includes a first side-pushing rod 1661 inserted into the third sliding hole 1623 and an eleventh translation mechanism 1662 that drives the first side-pushing rod 1661 to push the unloading jig 161 located at the first entrance 1621 of the first corner slide 162 toward the first exit 1622. The second side-pushing mechanism 167 includes a second side-pushing rod 1671 inserted into the fourth sliding hole 1624 and a twelfth translation mechanism 1672 that drives the second side-pushing rod 1671 to push the unloading jig 161 located at the first exit 1622 of the first corner slide 162 into the fully loaded jig slide 164.

[0053] The second corner slide 163 defines a fifth sliding hole 1633 and a sixth sliding hole 1634. A third side-pushing mechanism 168 and a fourth side-pushing mechanism 169 are disposed below the second corner slide 163. The third side-pushing mechanism 168 includes a third side-pushing rod 1681 inserted into the fifth sliding hole 1633 and a thirteenth translation mechanism 1682 that drives the third side-pushing rod 1681 to push the unloading jig 161 located at the second entrance 1631 of the second corner slide 163 toward the second exit 1632. The fourth side-pushing mechanism 169 includes a fourth side-pushing rod 1691 inserted into the sixth sliding hole 1634 and a fourteenth translation mechanism 1692 that drives the fourth side-pushing rod 1691 to push the unloading jig 161 located at the second exit 1632 of the second corner slide 163 into the unloaded jig slide 165. The eleventh translation mechanism 1662 , the twelfth translation mechanism 1672 , the thirteenth translation mechanism 1682 and the fourteenth translation mechanism 1692 of this embodiment are all cylinder and slide rail combination mechanisms.

[0054] In this embodiment, a circular loop is formed between the first corner slide 162, the fully loaded fixture slide 164, the second corner slide 163 and the empty fixture slide 165. The circular loop has n fixture stations, and n-1 unloading fixtures 161 are placed on the circular loop. The first side pushing mechanism 166 pushes the unloading fixture 161 at the first inlet 1621 to the first outlet 1622. After the first side pushing mechanism 166 is reset, the fourth side pushing mechanism 169 pushes the unloading fixture 161 at the second outlet 1632 of the second corner slide 163 into the empty fixture slide 165. The unloading fixture 161 on the empty fixture slide 165 enters the first corner slide 162 from the first inlet 1621. After the fourth side pushing mechanism 169 is reset, the third side pushing mechanism 168 pushes the second outlet 1632 of the second corner slide 163 into the empty fixture slide 165. The unloading jig 161 at the second inlet 1631 of the corner slide 163 is pushed to the second outlet 1632. After the third side pushing mechanism 168 is reset, the second side pushing mechanism 167 pushes the unloading jig 161 at the first outlet 1622 of the first corner slide 162 into the fully loaded jig slide 164. The unloading jig 161 on the fully loaded jig slide 164 enters the second corner slide 163 from the second inlet 1631. The second side pushing mechanism 167 is reset, and a cycle of the unloading device 16 is completed.

[0055] In this embodiment, the leg bending device 15, resistance detection device 20, and image detection device 21 are installed on one side of the fully loaded jig slide 164. Therefore, to ensure the accuracy of resistance detection and image detection, a first jig positioning mechanism 17 is installed at each workstation of the fully loaded jig slide 164.

[0056] Please refer to Figure 7 and Figure 8 In this embodiment, the blanking jig 161 has a positioning groove 1611 with a gradually decreasing width from the notch to the bottom (preferably, the inner sidewall of the positioning groove 1611 is an inclined surface or a smoothly curved surface). The first jig positioning mechanism 17 includes a first positioning member 171 having a smoothly curved contact surface with the positioning groove 1611, and a tenth translation mechanism 172 that drives the first positioning member 171 into the positioning groove.

[0057] The blanking jig 161 of this embodiment has a plurality of jig needles arranged in a row. Therefore, in order to facilitate the transfer of the skeleton coil A from the tooling jig 116 to the blanking jig 161, a transfer device 19 is provided on one side of the first corner slide 162. Figure 10The transfer device 19 of this embodiment includes: a seventh translation mechanism 191, a seventh lifting mechanism 192 and a transfer jig 193. The transfer jig 193 has a number of U-shaped slots 1931 arranged in the same row and fitting with the skeleton coil A. The seventh translation mechanism 191 and the seventh lifting mechanism 192 are both cylinder and slide rail combination mechanisms. The seventh lifting mechanism 192 is fixed on the moving element of the seventh translation mechanism 191, and the transfer jig 193 is fixed on the moving element of the seventh lifting mechanism 192. After the robot arm 11 inserts the skeleton coil A into the U-shaped slot 1931 from the upper socket of the U-shaped slot 1931, the transfer device 19 transports the skeleton coil A to the blanking device 16 and inserts the jig needle of the blanking jig 161 into the inner hole of the skeleton coil A from the side socket of the U-shaped slot 1931. The first pin A1 and the second pin A2 of the skeleton coil A in the blanking jig 161 are on the top, and the third pin A3 and the fourth pin A4 are on the bottom.

[0058] In this embodiment, a second fixture positioning mechanism 18 is also provided at the first corner slide 162 to assist the transfer device 19 in mounting the skeleton coil A on the blanking fixture 161. Figure 7 and Figure 9In this embodiment, the first corner slideway 162 defines a horizontal sliding hole 1625 parallel to the third sliding hole 1623. The second fixture positioning mechanism 18 includes a track plate 181, a guide sleeve 182, a second positioning member 183, a sliding member 184, a fixing member 185, a spring 186, and a tenth driving mechanism 187. The track plate 181 is located below the horizontal sliding hole 1625. The height of the track plate 181 gradually increases from the first inlet 1621 to the first outlet 1622. The guide sleeve 182 is arranged between the track plate 181 and the horizontal sliding hole 1625. The fixing member 185 is fixed to the side wall of the guide sleeve 182. The guide sleeve 182 is provided with a vertical sliding hole 1821 above the fixing member 185. The second positioning member 183 is inserted into the guide sleeve 182. The lower end of the second positioning member 183 is in sliding contact with the track plate 181. The upper end of the second positioning member 183 is inserted into the horizontal sliding hole 1625. The sliding member 184 is inserted into the vertical sliding hole 1821 and fixedly connected to the second positioning member 183. One end of the spring 186 is connected to the fixing member 185, and the other end is connected to the sliding member 184. The tenth driving mechanism 187 drives the guide sleeve 182 to move horizontally. The tenth translation mechanism 172 and the tenth driving mechanism 187 of this embodiment are both cylinder and slide rail combinations. The tenth driving mechanism 187 drives the guide sleeve 182 from the first inlet 1621 toward the first outlet 1622, causing the second positioning member 183 to move from the lower position of the track plate 181 to the upper position. The spring 186 is gradually stretched, causing the second positioning member 183 to gradually extend upward from the horizontal sliding hole 1625 and insert into the positioning slot 1611 of the blanking jig 161. The tenth driving mechanism 187 resets, driving the guide sleeve 182 from the first outlet 1622 toward the first inlet 1621. The second positioning member 183 moves from the upper position of the track plate 181 to the lower position. The spring 186 resets, and the second positioning member 183 retracts downward into the horizontal sliding hole 1625, allowing the first side pushing mechanism 166 to push the blanking jig 161 at the first inlet 1621 toward the first outlet 1622.

[0059] Please refer to Figure 11The bending foot device 15 of this embodiment includes: a fifth translation mechanism 151, a fifth lifting mechanism 152 fixed on the moving element of the fifth translation mechanism 151, a bending foot support 153 fixed on the moving element of the fifth lifting mechanism 152, a bending foot rod 154 fixed to the bending foot support 153 through a seat bearing, a bending foot lower limit plate 156 with a pin avoidance groove 1561 on the top surface and arranged below the bending foot rod 154, and a sixth lifting mechanism 155 that drives the bending foot lower limit plate 156 to move up and down. The sixth lifting mechanism 155 raises the lower limit plate 156 of the bending foot, allowing the bobbin coil A to rest on the upper surface of the lower limit plate 156, with the third and fourth pins A3 and A4 inserted into the pin avoidance grooves 1561. The fifth translation mechanism 151 and the fifth lifting mechanism 152 then move the bending rod 154 to the side of the first and second pins A1 and A2. The fifth translation mechanism 151 then drives the bending rod 154 to translate, bending the first and second pins A1 and A2 90°. In this embodiment, both the fifth translation mechanism 151 and the fifth lifting mechanism 152 are linear modules, offering higher precision and more accurate positioning. The sixth lifting mechanism 155 is a combination of a cylinder and a slide rail.

[0060] Please refer to Figure 12 The resistance detection device 20 of this embodiment includes a probe 201 located below the skeleton coil A and a ninth lifting mechanism 202 for lifting the probe 201. The ninth lifting mechanism 202 of this embodiment is a cylinder and slide rail combination mechanism.

[0061] Please refer to Figure 13 The image detection device 21 of this embodiment includes a ninth translation mechanism 213, a light source 211 fixed to a moving element of the ninth translation mechanism 213, and an industrial camera 212 connected to an external image processing system. The ninth translation mechanism 213 is a linear module.

[0062] The production line layout of the skeleton coil in this embodiment is reasonable and compact, and the various devices cooperate with each other in an orderly manner.

[0063] Example 2

[0064] Please refer to Figure 14 The difference between this embodiment and the first embodiment is that this embodiment is suitable for tinning a skeleton coil A with two or more pins installed on one end. The structure of the skeleton coil A in this embodiment is as follows: Figure 2 As shown, four pins are installed on one side of the skeleton end, namely the first pin A1, the second pin A2, the third pin A3 and the fourth pin A4, wherein the first pin A1 and the fourth pin A4 need to be tinned.

[0065] Please refer to Figure 15The flux dipping device 12 of this embodiment includes: a flux tank 121, a plurality of flux cups 122, a fourth drive mechanism 123, and a flux pump 124. The flux tank 121 is provided with a liquid inlet 1211 at the top and a liquid outlet 1212 at the bottom. The flux pump 124 is connected to the liquid inlet 1211 of the flux tank 121 via a hose and is used to pump flux into the flux tank 121. The fourth drive mechanism 123 includes a cup holder and a vertically arranged slide cylinder. One end of the cup holder is fixed to the slide of the slide cylinder, and the other end extends into the flux tank 121 and is fixed with a plurality of flux cups 122 arranged in the same row.

[0066] The fourth drive mechanism 123 lowers the flux cup 122 until its opening is submerged below the flux liquid level. The fourth drive mechanism 123 then raises the flux cup 122 until its opening protrudes above the flux liquid level to a specified height. At this point, the flux cup 122 is filled with flux. After the robotic arm 11 moves the skeleton coil A above the flux cup 122, it moves the skeleton coil A downward so that the first pin A1 and the fourth pin A4 are inserted into two adjacent flux cups 122 to absorb flux, while the second pin A2 and the third pin A3 are positioned between the two adjacent flux cups 122, avoiding contact with the flux. After the fluxing process is complete, the robotic arm 11 moves the skeleton coil A to the tinning device 13.

[0067] It is understandable that by setting the spacing between the flux cups 122 , the second pin A2 and the third pin A3 can also be dipped in flux, that is, the second pin A2 and the third pin A3 are respectively inserted into two adjacent flux cups 122 to be dipped in flux.

[0068] Please refer to Figure 16. The tinning device 13 of this embodiment includes: a tin pot 131, a tin ash box 132, a tin scraping mechanism 133, a tin surface detection mechanism 134, and a tin adding mechanism 135. A plurality of airtight tubes 1311 are formed between the bottom plate of the tin pot 131 and a side plate. The airtight tubes 1311 are spaced apart and extend through the bottom plate of the tin pot 131. The upper end surface of the airtight tubes 1311 is higher than the tin surface. The tin scraping mechanism 133 includes a second translation mechanism 1331, a second drive mechanism 1332, a tin scraping main plate 1333, a tin scraping auxiliary plate 1334, and a connecting rod 1335. The second translation mechanism 1331 is a guide rod cylinder. One end of the connecting rod 1335 is hinged to the moving element of the second translation mechanism 1331, and the other end is fixed to the main scraper 1333 and the auxiliary scraper plate 1334. The bottom surface of the main scraper 1333 is inclined and has several air-scraping grooves 1333a for clearing the air-scraping tubes 1311. The main scraper 1333 is primarily used to scrape the molten tin between the air-scraping tubes 1311, while the auxiliary scraper plate 1334 is primarily used to scrape the molten tin between the air-scraping tubes 1311 and the other side plate. The second drive mechanism 1332 is a pneumatic cylinder fixed to the moving element of the second translation mechanism 1331 and located above one end of the connecting rod 1335. It is used to rotate the connecting rod 1335 about the hinge point a to raise or lower the main scraper 1333 and auxiliary scraper plate 1334. Tin ash box 132 is provided under the tin outlet of tin furnace 131 and airproof cylinder 1311. Tin surface detection mechanism 134 comprises a third driving mechanism and a tin surface detection probe 201. The third driving mechanism is a tilted guide rod cylinder. The tin surface detection probe is fixed on the moving element of the third driving mechanism.

[0069] After the tin adding mechanism 135 injects tin liquid into the tin furnace 131, the second driving mechanism 1332 pushes one end of the connecting rod 1335 downward, so that the scraping main plate 1333 and the scraping auxiliary plate 1334 are lifted, and the second translation mechanism 1331 moves them to the top of the tin furnace 131. The second driving mechanism 1332 is reset, and the scraping main plate 1333 and the scraping auxiliary plate 1334 fall down. Then the second translation mechanism 1331 is reset to drive the scraping main plate 1333 and the scraping auxiliary plate 1334 to scrape off excess Tin liquid, the third driving mechanism moves the tin surface probe 201 into the tin furnace 131 to detect whether the tin surface height meets the requirements. If it meets the requirements, the robot arm 11 first moves the skeleton coil A to the top of the tin furnace 131, and then moves the skeleton coil A downward, so that the second pin A2 and the third pin A3 of the skeleton coil A are inserted into the airtight cylinder 1311, and the first pin A1 and the fourth pin A4 are inserted into the tin liquid. After the tinning is completed, the robot arm 11 moves the skeleton coil A to the next process for bending.

[0070] It can be understood that by setting the spacing between each air escape tube 1311, the second pin A2 and the third pin A3 can also be tinned, that is, the second pin A2 and the third pin A3 are inserted into the tin liquid between two adjacent air escape tubes 1311, the first pin A1 is inserted into one of the air escape tubes 1311, and the fourth pin A4 is inserted into the other air escape tube 1311.

[0071] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. An automatic bending device for a skeleton coil, characterized in that: It includes an inner eight-shaped bending device for bending the pin into an eight-shaped shape and a foot bending device for bending the pin to a certain angle; The bent inner eight device includes: a first lifting mechanism, a first driving mechanism, a first guide rod, a second guide rod, a first push rod and a second push rod; the first guide rod is alternately provided with a first push rod and a first sliding hole along its length direction, the second guide rod is alternately provided with a second sliding hole and a second push rod along its length direction, the first guide rod is parallel to the second guide rod, the first push rod and the second sliding hole correspond one-to-one, the first push rod is inserted into the second sliding hole, the second push rod and the first sliding hole correspond one-to-one, the second push rod is inserted into the first sliding hole, the first driving mechanism drives the first guide rod and the second guide rod to move synchronously and symmetrically, and the first lifting mechanism drives the first guide rod and the second guide rod to move up and down; The bending foot device includes: a fifth translation mechanism, a fifth lifting mechanism, a bending foot support, a bending foot rod, a sixth lifting mechanism and a bending foot lower limit plate; the bending foot rod is rotatably arranged on the bending foot support, the fifth lifting mechanism drives the bending foot support to move up and down, the fifth translation mechanism drives the bending foot support to move horizontally, the bending foot lower limit plate is arranged below the bending foot rod, and the sixth lifting mechanism drives the bending foot lower limit plate to move up and down.

2. The automatic leg bending device of the bobbin coil according to claim 1, characterized in that: The bent-in-eight device also includes a positioning plate, which is arranged below the first guide rod and the second guide rod and is used for horizontal positioning of the skeleton coil.

3. A production line for a skeleton coil, characterized in that: include: A feeding device, a flux dipping device, a tinning device, a robotic arm, a feeding device and an automatic leg bending device for a skeleton coil as described in claim 1 or 2; after the robotic arm obtains the skeleton coil from the feeding device, it moves the skeleton coil to the flux dipping device to dip in flux, moves the skeleton coil to the tinning device to dip in tin liquid, moves the skeleton coil to the bending device to bend the pins of the skeleton coil into an eight-shaped shape, and finally moves the skeleton coil to the feeding device; the leg bending device is arranged on one side of the feeding device and is used to bend the legs of the skeleton coil conveyed by the feeding device.

4. The production line of the skeleton coil according to claim 3, characterized in that: The tin dipping device includes: a tin furnace, a tin ash box, a tin scraping mechanism, a tin surface detection mechanism and a tin adding mechanism; a plurality of air-avoiding cylinders are formed between the bottom plate and a side plate of the tin furnace, which are arranged at intervals and pass through the bottom plate of the tin furnace, and the upper end surface of the air-avoiding cylinder is higher than the tin surface; the tin scraping mechanism includes: a second translation mechanism, a second driving mechanism, a tin scraping main plate, a tin scraping sub-plate and a connecting rod; a plurality of air-avoiding cylinder avoidance grooves are provided on the bottom surface of the tin scraping main plate, one end of the connecting rod is hinged to the moving element of the second translation mechanism, and the other end is fixed with the tin scraping main plate and the tin scraping sub-plate, and the second driving mechanism rotates the connecting rod around the hinge point of the connecting rod and the moving element of the second translation mechanism; a tin ash box is provided under the tin outlet and the air-avoiding cylinder of the tin furnace; the tin surface detection mechanism is used to detect the height of the tin surface; the tin adding mechanism is used to inject tin liquid into the tin furnace.

5. The production line of the skeleton coil according to claim 3, characterized in that: The flux dipping device includes: a flux tank, a plurality of flux cups, a fourth driving mechanism and a flux pump. The upper part of the flux tank is provided with a liquid inlet, the lower part of the flux tank is provided with a liquid outlet, the flux pump is connected to the liquid inlet and is used to pump flux into the flux tank. The fourth driving mechanism drives the flux cup to move up and down in the flux tank.

6. The production line of the bobbin coil according to claim 3, characterized in that: The unloading device includes: an unloading jig, a first corner slide, a second corner slide, a fully loaded jig slide, an empty jig slide, a first side pushing mechanism, a second side pushing mechanism, a third side pushing mechanism and a fourth side pushing mechanism; The first corner slide is provided with a first inlet and a first outlet, the second corner slide is provided with a second inlet and a second outlet, the first corner slide and the second corner slide are parallel to each other, the empty jig slide is vertically connected between the first inlet and the second outlet, and the fully loaded jig slide is vertically connected between the first outlet and the second inlet; The first side pushing mechanism and the second side pushing mechanism are arranged at the first corner slide, the first side pushing mechanism is used to push the unloading jig from the first entrance to the first exit of the first corner slide, and the second side pushing mechanism is used to push the unloading jig from the first exit of the first corner slide into the fully loaded jig slide; the third side pushing mechanism and the fourth side pushing mechanism are arranged at the second corner slide, the third side pushing mechanism is used to push the unloading jig from the second entrance to the second exit of the second corner slide, and the fourth side pushing mechanism is used to push the unloading jig from the second exit of the second corner slide into the empty jig slide.

7. The production line of the bobbin coil according to claim 6, characterized in that: The unloading device also includes a first jig positioning mechanism; the unloading jig is provided with a positioning groove, the width of the positioning groove gradually decreases from the groove mouth to the groove bottom, and the first jig positioning mechanism is arranged on one side of the fully loaded jig slide, which includes a first positioning member and a tenth translation mechanism that drives the first positioning member to insert into the positioning groove, and the contact surface between the first positioning member and the positioning groove is a smooth curved surface.

8. The production line of the bobbin coil according to claim 6, characterized in that: The blanking device also includes a second jig positioning mechanism; the first corner slide is provided with a horizontal sliding hole parallel to the first sliding hole; the second jig positioning mechanism includes: a track plate, a guide sleeve, a second positioning member, a sliding member, a fixing member, a spring and a tenth driving mechanism, the track plate is arranged below the horizontal sliding hole, the track plate gradually increases in height from the first inlet direction to the first outlet direction, the guide sleeve is arranged between the track plate and the horizontal sliding hole, the fixing member is fixed to the side wall of the guide sleeve, the guide sleeve is provided with a vertical sliding hole above the fixing member, the second positioning member is inserted in the guide sleeve, the lower end of the second positioning member is in sliding contact with the track plate, and the upper end of the second positioning member is inserted in the horizontal sliding hole, the sliding member is inserted in the vertical sliding hole and fixedly connected to the second positioning member, one end of the spring is connected to the fixing member, and the other end is connected to the sliding member, and the tenth driving mechanism drives the guide sleeve to move horizontally.

9. The production line of the bobbin coil according to claim 6, characterized in that: It also includes a transfer device provided on one side of the first corner slideway, the transfer device including: a seventh translation mechanism, a seventh lifting mechanism and a transfer jig, the seventh lifting mechanism drives the transfer jig to move up and down, the seventh translation mechanism drives the transfer jig to move horizontally, the transfer jig has a plurality of U-shaped slots that fit with the skeleton coil, when the robotic arm inserts the skeleton coil into the U-shaped slot from the upper socket of the U-shaped slot, the transfer device transports the skeleton coil to the blanking device and inserts the jig needle of the blanking jig into the inner hole of the skeleton coil from the side socket of the U-shaped slot; The robotic arm includes: an eighth translation mechanism, an eighth lifting mechanism, an eighth rotation mechanism, a fixed seat, a rotating rod and a tooling fixture. The tooling fixture has several fixture needles arranged in the same row. The fixture needles can be inserted into the inner hole of the skeleton coil to fix the skeleton coil. The eighth translation mechanism drives the fixed seat to move horizontally, the eighth lifting mechanism drives the fixed seat to move up and down, the eighth rotation mechanism is fixed on the fixed seat, the rotating rod is installed on the fixed seat through a bearing and is driven to rotate by the eighth rotation mechanism, and the tooling fixture is fixed on the rotating rod.

10. The production line of the bobbin coil according to any one of claims 6 to 9, characterized in that: It also includes a resistance detection device and an image detection device arranged on one side of the fully loaded fixture slideway.

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