Automatic press-fitting production line of low-voltage coil for distribution transformer

Abstract

The invention discloses an automatic press-fitting production line for a low-voltage coil for a distribution transformer, which comprises an upper and lower line device, a mounting and dismounting device, a transfer device and a heating device, and is also provided with a coil press-fitting area and a coil dismounting and mounting area, the wire feeding and discharging device is used for feeding a low-voltage coil to be pressed to a coil pressing area; the assembling and disassembling device is used for pressing the to-be-pressed low-voltage coil in the coil pressing area to form a low-voltage coil pressing assembly; the transfer device is used for transferring the low-voltage coil press-fitting assembly in the coil press-fitting area into the heating device; the heating device is used for heating the low-voltage coil press-fitting assembly; the transfer device is further used for transferring the low-voltage coil press-fitting assembly subjected to heating treatment in the heating device to a coil disassembly and assembly area. The assembling and disassembling device is further used for disassembling the low-voltage coil press-fitting assembly in the coil disassembling and assembling area to the low-voltage coil. The coil feeding and discharging device is further used for discharging the low-voltage coil in the coil dismounting and mounting area. According to the scheme, automatic press fitting, heating, dismounting and mounting of the low-voltage coil can be achieved, and the defects existing in an existing manual press fitting mode can be overcome.

Description

Technical Field

[0001] The invention relates to the technical field of coil manufacturing for distribution transformer products, and in particular to an automatic press-assembly production line for low-voltage coils for distribution transformers. Background Art

[0002] At present, the oblong low-voltage coil of the distribution transformer is pressed manually; the coil is manually hoisted and pressed with a pressing plate, then hoisted onto a press to press the coil and tighten the pressing plate with a screw, and then transported to a curing furnace for heating. After the coil is heated, the coil is manually taken out of the curing furnace, and finally the screw and pressing plate are removed. However, this manual pressing method has the disadvantages of high labor intensity, low automation, low production efficiency, and large floor space. Summary of the invention

[0003] In view of this, the present invention provides an automatic press-assembly production line for low-voltage coils for distribution transformers, which can realize automatic press-assembly, heating and disassembly of low-voltage coils. This automatic press-assembly method can avoid the defects of the existing manual press-assembly method.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An automatic press-fitting production line for low-voltage coils for distribution transformers, comprising: an upper and lower line device, an assembly and disassembly device, a transfer device and a heating device, and also provided with a coil press-fitting area and a coil disassembly area;

[0006] The upper and lower wire device is used to put the low-voltage coil to be pressed and installed on the coil pressing area;

[0007] The assembly and disassembly device is used to press-fit the low-voltage coil to be pressed in the coil press-fit area to form a low-voltage coil press-fit assembly;

[0008] The transfer device is used to transfer the low-voltage coil press-fitting assembly in the coil press-fitting area to the heating device;

[0009] The heating device is used to heat the low-voltage coil press-fit assembly;

[0010] The transfer device is also used to transfer the low-voltage coil press-fit assembly after the heating treatment in the heating device to the coil disassembly area;

[0011] The assembly and disassembly device is also used to disassemble the low-voltage coil press-fit assembly in the coil assembly and disassembly area to the low-voltage coil;

[0012] The above-mentioned upper and lower wire device is also used for removing the low-voltage coil from the coil disassembly and assembly area.

[0013] Preferably, it also includes: a first conveying line, a lower pressing plate, an upper pressing plate and a fixing assembly;

[0014] The lower pressing plate is placed on the first conveying line;

[0015] The upper and lower line device is used to place the low-voltage coil to be pressed on the lower pressing plate of the first conveying line;

[0016] The first conveying line is used to convey the lower pressing plate and the low-voltage coil to be pressed to the coil pressing area;

[0017] The assembly and disassembly device is used to first place the upper pressure plate on the low-voltage coil to be pressed in the coil pressing area and press the upper pressure plate downward, and then fasten the upper pressure plate and the lower pressure plate through the fixing assembly to form the low-voltage coil pressing assembly, and is also used to disassemble the fixing assembly in the low-voltage coil pressing assembly in the coil disassembly and assembly area and remove the upper pressure plate.

[0018] Preferably, the assembly and disassembly device comprises: a robot and a first press;

[0019] The robot is used to first place the upper pressure plate on the low-voltage coil to be pressed in the coil pressing area. The first press is then used to press the upper pressure plate downward. The robot then fastens the upper pressure plate and the lower pressure plate through the fixing assembly to form the low-voltage coil pressing assembly. The robot is also used to disassemble the fixing assembly in the low-voltage coil pressing assembly in the coil disassembly area and remove the upper pressure plate.

[0020] Preferably, the fixing assembly comprises: two screws and two nuts;

[0021] The automatic press-fit production line for low-voltage coils for distribution transformers also includes two screw drive assemblies;

[0022] One end of the two screw rods is rotatably connected to two opposite ends of the lower pressing plate, and both have switchable horizontal and vertical states;

[0023] The two opposite ends of the upper pressing plate are both provided with notches;

[0024] After the first press presses the upper pressing plate downward, the two screw driving assemblies are used to drive the two screws to switch to a vertical state one by one, so that the two screws are placed one by one in the two notches of the upper pressing plate, and the robot is also used to tighten the two nuts on the two screws one by one, so that the two nuts press the upper pressing plate;

[0025] After the low-voltage coil pressing assembly is transferred to the coil disassembly area, the robot is also used to remove the two nuts one by one, and is also used to drive the two screws to switch to a horizontal state respectively, so that the two screws are separated from the two notches of the upper pressure plate one by one. The robot is also used to remove the upper pressure plate at this time.

[0026] Preferably, the screw drive assembly includes a screw lifting assembly;

[0027] The screw rod lifting assembly is arranged in the coil press-fitting area and is used to lift the screw rod in the coil press-fitting area to a vertical state.

[0028] Preferably, it also includes: a second conveying line, a third conveying line, a tray stacking machine and a tray unpacking machine;

[0029] The second conveying line is used to sequentially convey the low-voltage coil press-fitting components in the coil press-fitting area to the stacking machine;

[0030] The stacking machine is used to stack the low-voltage coil press-fit assemblies conveyed by the second conveying line into multiple layers of the low-voltage coil press-fit assemblies in sequence;

[0031] The transfer device is used to transfer the multi-layer low-voltage coil press-fit assembly of the stacking machine to the heating device, and is used to transfer the multi-layer low-voltage coil press-fit assembly after the heating treatment in the heating device to the destacking machine;

[0032] The disassembling machine is used to disassemble the multi-layer low-voltage coil press-fit assembly into a plurality of low-voltage coil press-fit assemblies;

[0033] The third conveyor line is used to convey the plurality of low-voltage coil press-fit assemblies of the disc disassembling machine to the coil disassembly and assembly area in sequence.

[0034] Preferably, the transfer device comprises: a transfer vehicle, a fourth conveyor line, a fifth conveyor line and a sixth conveyor line;

[0035] The fifth conveying line is arranged in the heating device;

[0036] The transfer vehicle is used to transfer the multi-layer low-voltage coil press-fitting components of the stacking machine to the fourth conveyor line, and the fourth conveyor line is used to convey the multi-layer low-voltage coil press-fitting components to the fifth conveyor line;

[0037] The fifth conveyor line is also used to convey the multi-layer low-voltage coil press-assembled assemblies after heat treatment to the sixth conveyor line, and the sixth conveyor line is used to convey the multi-layer low-voltage coil press-assembled assemblies to the transfer vehicle, and the transfer vehicle is also used to transfer the multi-layer low-voltage coil press-assembled assemblies to the depaneling machine.

[0038] Preferably, it also includes a cache conveying line;

[0039] The sixth conveyor line is also used to convey the multi-layer low-voltage coil press-fit assembly after heating to the cache conveyor line;

[0040] The buffer conveyor line is used to buffer multiple layers of the low-voltage coil press-fit components;

[0041] The transfer vehicle is also used to transfer the multi-layer low-voltage coil press-assembled components of the cache conveyor line to the depaneling machine.

[0042] Preferably, it also includes a guide rail;

[0043] The fourth conveying line and the buffer conveying line are arranged in parallel along the first direction on both sides of the heating device;

[0044] The disk stacking machine and the disk unpacking machine are arranged in parallel along a second direction, wherein the second direction is parallel to the first direction;

[0045] The guide rail is arranged along the first direction or the second direction, and is distributed between the stacking machine and the unstacking machine, and between the fourth conveying line and the buffer conveying line;

[0046] The transfer vehicle can slide along the guide rail.

[0047] Preferably, it also includes: a detection device and a seventh conveying line;

[0048] The automatic press-fit production line for low-voltage coils for distribution transformers is also provided with a coil detection area;

[0049] The seventh conveying line is used to convey the low-voltage coils in the coil disassembly and assembly area to the coil detection area;

[0050] The detection device is used to detect the external dimensions of the low-voltage coil in the coil detection area;

[0051] The above-mentioned wire-loading and unloading device is also used for removing the low-voltage coil in the coil detection area from the wire.

[0052] It can be seen from the above technical scheme that the automatic pressing production line for low-voltage coils for distribution transformers provided by the present invention can sequentially realize the online installation of low-voltage coils to be pressed, the pressing of low-voltage coils to be pressed into low-voltage coil pressing assemblies, the transfer of low-voltage coil pressing assemblies to the heating device, the heating treatment of low-voltage coil pressing assemblies by the heating device, the transfer of low-voltage coil pressing assemblies out of the heating device, the disassembly of low-voltage coil pressing assemblies and the offline installation of low-voltage coils, thereby realizing automatic pressing, heating and disassembly of low-voltage coils. This automatic pressing method can avoid the defects of the existing manual pressing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 A schematic diagram of an automatic press-assembly production line for low-voltage coils for distribution transformers provided in an embodiment of the present invention;

[0055] Figure 2 A schematic diagram of the area division of the automatic press-fit production line for low-voltage coils for distribution transformers provided in an embodiment of the present invention;

[0056] Figure 3 A schematic diagram of the low-voltage coil press assembly provided by an embodiment of the present invention;

[0057] Figure 4 A side view of a low-voltage coil press-fit provided in an embodiment of the present invention.

[0058] Among them, 1 is a lifting device, 2 is a transfer vehicle, 3 is a first press, 4 is a robot, 5 is a stacking machine, 6 is a curing furnace, 7 is a buffer conveyor line, 8 is a de-disk machine, 9 is an auxiliary device, 10 is the first conveyor line, 11 is the seventh conveyor line, 12 is the second conveyor line, 13 is the fourth conveyor line, 14 is the sixth conveyor line, 15 is the third conveyor line, 17 is an upper pressing plate, 17.1 is a notch, 18 is a low-voltage coil to be pressed, 19 is a lower pressing plate, 20 is a coil upper line area, 21 is a coil pressing area, 22 is a coil stacking area, 23 is a coil heating area, 24 is a coil cooling buffer area, 25 is a coil de-disk area, 26 is a coil disassembly area, 27 is a coil detection area, 28 is a coil lower line area, 29 is a screw, 30 is a nut, and 31 is a guide rail. DETAILED DESCRIPTION

[0059] In view of the defects of the manual pressing method mentioned in the above background technology, the specific defects are as follows: first, the installation and removal of the pressing plate, coil pressing, coil entering and exiting the curing furnace, and coil transportation require high labor intensity; second, the press machine and curing furnace equipment are all manually operated, with low automation and low production efficiency; third, the low-voltage coil pressing process requires a large area of ​​land. To this end, the present invention proposes an automatic pressing production line for oblong low-voltage coils for distribution transformers, which is used to overcome the defects of the existing manual pressing method.

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] The embodiment of the present invention provides an automatic press assembly production line for low-voltage coils for distribution transformers, such as Figure 1 As shown, it includes: upper and lower line devices, assembly and disassembly devices, transfer devices and heating devices, such as Figure 2 As shown, the automatic press-assembly production line for low-voltage coils for distribution transformers is also provided with a coil press-assembly area 21 and a coil disassembly area 26;

[0062] The upper and lower wire devices are used to load the low-voltage coil 18 to be pressed onto the coil pressing area 21;

[0063] The assembly and disassembly device is used to press-fit the low-voltage coil 18 to be pressed in the coil pressing area 21 to form a low-voltage coil pressing assembly;

[0064] The transfer device is used to transfer the low-voltage coil press-fitting assembly in the coil press-fitting area 21 to the heating device;

[0065] The heating device is used for heating the low-voltage coil press-fit assembly;

[0066] The transfer device is also used to transfer the low-voltage coil press-fit assembly after the heating treatment in the heating device to the coil disassembly area 26;

[0067] The assembly and disassembly device is also used to disassemble the low-voltage coil press-fit assembly in the coil disassembly and assembly area 26 into the low-voltage coil;

[0068] The upper and lower wire device is also used to remove the low-voltage coil from the coil disassembly and assembly area 26 .

[0069] It should be noted that the low-voltage coil 18 to be pressed can be an oblong low-voltage coil to be pressed; the upper and lower wire device is used as a coil upper and lower wire device, which is used to put the low-voltage coil 18 to be pressed on the line (transfer) to the coil pressing area 21, and to take the low-voltage coil in the coil disassembly area 26 off the line, so that the low-voltage coil 18 to be pressed is automatically put on the line to the pressing production line, and the low-voltage coil after pressing is automatically taken off the line from the pressing production line; wherein, Figure 1 As shown, the upper and lower line devices can adopt a lifting device 1, and the lifting device 1 can adopt a KBK lifting device;

[0070] The assembly and disassembly device is used as a coil assembly and disassembly device, which is used to press the low-voltage coil 18 to be pressed in the coil pressing area 21 to form a low-voltage coil pressing assembly through the upper pressing plate 17, the lower pressing plate 19 and the fixing assembly, and is used to realize the pressing of the low-voltage coil 18 to be pressed. The details can be seen in the following description; wherein, the structure of the low-voltage coil pressing assembly can refer to Figure 4 As shown; in addition, the assembly and disassembly device is also used to disassemble the low-voltage coil press-fit assembly of the coil disassembly and assembly area 26 to the low-voltage coil, so as to realize the disassembly and assembly of the low-voltage coil press-fit assembly;

[0071] The transfer device is used as a coil transfer device, which is used to transfer the low-voltage coil press-fit assembly in the coil press-fit area 21 to the heating device, and is also used to transfer the low-voltage coil press-fit assembly after heating treatment in the heating device to the coil disassembly area 26, so as to realize the transfer of the low-voltage coil press-fit assembly; wherein the heating device can be a heating furnace device, such as Figure 1 As shown, for example, a fully automatic curing oven 6 can be used.

[0072] That is to say, the automatic pressing production line for low-voltage coils for distribution transformers provided by this scheme can sequentially realize the online installation of the low-voltage coils 18 to be pressed, the pressing of the low-voltage coils 18 to be pressed into low-voltage coil pressing assemblies, the transfer of the low-voltage coil pressing assemblies to the heating device, the heating treatment of the low-voltage coil pressing assemblies by the heating device, the transportation of the low-voltage coil pressing assemblies out of the heating device, the disassembly of the low-voltage coil pressing assemblies and the offline installation of the low-voltage coils, through the orderly use of the online and offline devices, the assembly and disassembly devices, the transfer of the low-voltage coil pressing assemblies to the heating device, the automatic pressing, heating and disassembly of the low-voltage coils, and the automatic pressing, heating and disassembly of the low-voltage coils. This automatic pressing method can avoid the defects of the existing manual pressing method, that is, high production efficiency, high degree of automation and low labor intensity. Of course, the automatic pressing production line can also be realized intelligently and unmanned, so as to greatly improve production efficiency.

[0073] In this scheme, if Figure 1 As shown, the automatic press-assembly production line for low-voltage coils for distribution transformers provided in the embodiment of the present invention further includes: a first conveyor line 10, a lower pressing plate 19, an upper pressing plate 17 and a fixing assembly;

[0074] The lower pressing plate 19 is placed on the first conveying line 10;

[0075] The upper and lower line devices are used to place the low-voltage coil 18 to be pressed onto the lower pressing plate 19 of the first conveyor line 10;

[0076] The first conveyor line 10 is used to convey the lower pressing plate 19 and the low-voltage coil 18 to be pressed to the coil pressing area 21;

[0077] The assembly and disassembly device is used to first place the upper pressure plate 17 on the low-voltage coil 18 to be pressed in the coil pressing area 21 and press the upper pressure plate 17 downward, and then fasten the upper pressure plate 17 and the lower pressure plate 19 through a fixing component to form a low-voltage coil pressing assembly, and is also used to disassemble the fixing components in the low-voltage coil pressing assembly in the coil disassembly and assembly area 26 and remove the upper pressure plate 17.

[0078] It should be noted that if Figure 1 As shown, the first conveyor line 10 can be a roller conveyor line, and the lower pressing plate 19 can be placed on the roller row of the roller conveyor line and can move with the rolling of the roller row; the upper and lower line devices are used to stack the low-voltage coil 18 to be pressed on the lower pressing plate 19 of the first conveyor line 10; after the low-voltage coil 18 to be pressed is stacked on the lower pressing plate 19, the first conveyor line 10 is used to transport the lower pressing plate 19 and the low-voltage coil 18 to be pressed to the coil pressing area 21; wherein, as Figure 2 As shown, the coil pressing area 21 may include: a front roller conveyor line, a coil pressing platform and a rear roller conveyor line arranged in sequence (the structure of the coil disassembly and assembly area 26 is the same), that is, the lower pressing plate 19 and the low-voltage coil 18 to be pressed are first conveyed to the front roller conveyor line via the first conveyor line 10, and then conveyed to the coil pressing platform by the front roller conveyor line. After the coil pressing platform completes the pressing to form a low-voltage coil pressing assembly, the rear roller conveyor line conveys the low-voltage coil pressing assembly out of the coil pressing platform, and then the low-voltage coil pressing assembly is received by the transfer device; wherein, the lower pressing plate 19 and After the low-voltage coil 18 to be pressed is transported to the coil pressing station, the assembly and disassembly device is used to first stack the upper pressing plate 17 on the low-voltage coil 18 to be pressed and press the upper pressing plate 17 downward, so that the low-voltage coil 18 to be pressed is pressed to the required size, and then the upper pressing plate 17 and the lower pressing plate 19 are fastened by the fixing assembly to form a low-voltage coil pressing assembly; in addition, the assembly and disassembly device is also used to disassemble the fixing assembly in the low-voltage coil pressing assembly of the coil disassembly and assembly area 26 and remove the upper pressing plate 17, leaving only the low-voltage coil and the lower pressing plate 19 after pressing, and finally the low-voltage coil is taken off the line by the upper and lower line devices. Of course, the present scheme is designed in this way, which can facilitate the automatic clamping of the low-voltage coil 18 to be pressed by the lower pressing plate 19 and the upper pressing plate 17, and the automatic pressing of the low-voltage coil 18 to be pressed by the lower pressing plate 19, as well as the automatic fastening of the lower pressing plate 19 and the upper pressing plate 17, which can also facilitate the automatic pressing of the low-voltage coil 18 to be pressed.

[0079] Specifically, Figure 1 As shown, the assembly and disassembly device includes: a robot 4 and a first press 3;

[0080] The robot 4 is used to first place the upper pressure plate 17 on the low-voltage coil 18 to be pressed in the coil pressing area 21. The first press 3 is then used to press the upper pressure plate 17 downward. The robot 4 then fastens the upper pressure plate 17 and the lower pressure plate 19 through a fixing assembly to form a low-voltage coil pressing assembly. The robot 4 is also used to disassemble the fixing assembly in the low-voltage coil pressing assembly in the coil disassembly area 26 and remove the upper pressure plate 17.

[0081] It should be noted that, during the press-fitting process of the low-voltage coil 18 to be press-fitted, the robot 4 is used to first stack the upper pressing plate 17 on the low-voltage coil 18 to be press-fitted, and the first press 3 is used to press the upper pressing plate 17 downwards to press the low-voltage coil 18 to be press-fitted to the required size, and the robot 4 then fastens the upper pressing plate 17 and the lower pressing plate 19 through the fixing assembly to form a low-voltage coil press-fitting assembly; during the disassembly process of the low-voltage coil press-fitting assembly, the robot 4 is also used to disassemble the fixing assembly in the low-voltage coil press-fitting assembly and remove the upper pressing plate 17, leaving only the low-voltage coil and the lower pressing plate 19; that is, the assembly and disassembly device includes: a first press 3 for pressing the upper pressing plate 17 and a robot 4 for operating the upper pressing plate 17 and the fixing assembly, so as to facilitate better realization of the automated press-fitting of the low-voltage coil 18 to be press-fitted. Among them, the first press 3 can be a fully automatic press.

[0082] Furthermore, if Figure 3 As shown, the fixing assembly includes: two screw rods 29 and two nuts 30;

[0083] The automatic press-fit production line for low-voltage coils for distribution transformers also includes two screw drive assemblies;

[0084] like Figure 3 As shown, one end of the two screw rods 29 is rotatably connected to the two opposite ends of the lower pressing plate 19, and both have switchable horizontal and vertical states; of course, when the screw rods 29 are in the horizontal state and are being conveyed, they will not interfere with the conveying line; wherein, the relative direction of the two ends of the lower pressing plate 19 can be parallel to the conveying direction of the first conveying line 10, and each screw rod 29 can be rotated back and forth between the horizontal state and the vertical state; the two screw driving assemblies can be respectively arranged on the coil pressing table of the coil pressing area 21, and are used to drive the two screw rods 29 to switch from the horizontal state to the vertical state one by one;

[0085] like Figure 1 As shown, two opposite ends of the upper pressing plate 17 are provided with notches 17.1; wherein the relative direction of the two ends of the upper pressing plate 17 may be parallel to the conveying direction of the first conveying line 10;

[0086] After the first press 3 presses the upper pressing plate 17 downward, Figure 4As shown, the two screw drive assemblies are used to drive the two screws 29 to switch to a vertical state one by one, so that the two screws 29 are close to the two notches 17.1 of the upper pressing plate 17 one by one, and the robot 4 is also used to tighten the two nuts 30 on the two screws 29 one by one, so that the two nuts 30 press the upper pressing plate 17; that is, the two nuts 30 press the upper end surfaces of the two notches 17.1 of the upper pressing plate 17 one by one, and then tighten the upper pressing plate 17 and the lower pressing plate 19 to form a low-voltage coil press-fit assembly;

[0087] After the low-voltage coil press assembly is transferred to the coil disassembly area 26, the robot 4 is also used to remove the two nuts 30 one by one, and is also used to drive the two screws 29 to switch to a horizontal state, so that the two screws 29 are separated from the two notches 17.1 of the upper pressing plate 17 one by one. The robot 4 is also used to remove the upper pressing plate 17 at this time, leaving only the low-voltage coil and the lower pressing plate 19. Among them, after the robot 4 removes the two nuts 30 one by one, it can also drive the two screws 29 to switch from a vertical state to a horizontal state by touching, that is, by touching to flip the two screws 29 downward to a horizontal state.

[0088] Among them, the robot 4 can realize the stacking and removal of the upper pressing plate 17, and realize the precise disassembly and assembly of the two nuts 30, and the two screws 29 can be switched from the horizontal state to the vertical state through the screw drive assembly, thereby effectively ensuring the reliability and accuracy of the press-fitting process of the low-voltage coil 18 to be pressed. In addition, the robot 4 can be a large-stroke six-axis robot, which can realize the transportation of the upper pressing plate 17 and the precise tightening of the nuts 30, thereby further ensuring the reliability of the coil pressing process. Of course, the robot 4 has the function of transporting the upper pressing plate 17 and disassembling and assembling the nuts 30. Among them, the head of the robot 4 is equipped with an interface, which can be used to install different operating devices; for example, when preparing to transport the upper pressure plate 17, the head of the robot 4 can be installed with forks, that is, the forks are extended into the predetermined position of the upper pressure plate 17 for transportation; for example, when preparing to install the nut 30, the head of the robot 4 can be installed with a sleeve, and the nut 30 is carried by the sleeve and the nut 30 is put on the screw 29, thereby driving the sleeve to rotate to tighten the nut 30; of course, the head of the robot 4 can automatically install the above-mentioned operating devices.

[0089] In other words, this press-fitting production line can not only meet the full automation of the low-voltage coil pressing process, but also ensure the automatic pressing and heating curing of the low-voltage coil, meet the size requirements of the low-voltage coil production, and greatly improve the production efficiency. Figure 1As shown, the pressing production line also includes an auxiliary device 9. After the low-voltage coil pressing assembly is transferred to the coil disassembly area 26, before the robot 4 removes the two nuts 30 one by one, the auxiliary device 9 is used to press the low-voltage coil pressing assembly in the coil disassembly area 26, which is actually to press the upper pressure plate 17. In this way, when the robot 4 removes the nuts 30, the low-voltage coil pressing assembly can be prevented from shaking.

[0090] Still further, the screw drive assembly includes a screw jacking assembly;

[0091] The screw lifting assembly is arranged in the coil pressing area 21, and is used to lift the screw 29 in the coil pressing area 21 to a vertical state. Among them, the two screw lifting assemblies are two lifting devices, and can be respectively arranged on the coil pressing table of the coil pressing area 21; of course, when the lower pressing plate 19 is transported to the coil pressing table of the coil pressing area 21, the two screw lifting assemblies are located one by one below the two screws 29, so that after the first press 3 presses the upper pressing plate 17 downward, it is convenient for the two screw lifting assemblies to lift the two screws 29 one by one to a vertical state; of course, the screw 29 is turned upward during the lifting process; among them, the screw lifting assembly can adopt a cylinder lifting assembly; in addition, as mentioned above, the two screws 29 are switched from a vertical state to a horizontal state, which can be driven based on the touch of the robot 4.

[0092] In this scheme, if Figure 1 As shown, the automatic press-assembly production line for low-voltage coils for distribution transformers provided in the embodiment of the present invention further includes: a second conveyor line 12, a third conveyor line 15, a stacking machine 5 and a stacking machine 8;

[0093] The second conveyor line 12 is used to sequentially convey the low-voltage coil press-fitting components in the coil press-fitting area 21 to the stacking machine 5; Figure 1 As shown, the input side of the second conveyor line 12 is connected to the output side of the coil pressing area 21, and the output side passes through the stacking machine 5, so that the stacking machine 5 can stack the low-voltage coil pressing assemblies conveyed by the second conveyor line 12 into multiple layers of low-voltage coil pressing assemblies in sequence;

[0094] The stacking machine 5 is used to stack the low-voltage coil press-fitting components conveyed by the second conveyor line 12 into multiple layers of low-voltage coil press-fitting components in sequence; wherein, as described above, when the second conveyor line 12 conveys the low-voltage coil press-fitting components to the stacking machine 5, the stacking machine 5 then lifts the low-voltage coil press-fitting components, and repeats the operation to form multiple layers of low-voltage coil press-fitting components in the stacking machine 5; of course, the stacking machine 5 can convey the multiple layers of low-voltage coil press-fitting components out with the help of the second conveyor line 12, which is convenient for the transfer device to receive them;

[0095] The transfer device is used to transfer the multi-layer low-voltage coil press-fit assembly of the stacking machine 5 to the heating device, and to transfer the multi-layer low-voltage coil press-fit assembly after the heating treatment in the heating device to the destacking machine 8; wherein the heating device can heat the multi-layer low-voltage coil press-fit assembly;

[0096] The disassembling machine 8 is used to disassemble the multi-layer low-voltage coil press-fit assembly into multiple low-voltage coil press-fit assemblies;

[0097] The third conveyor line 15 is used to sequentially convey the multiple low-voltage coil press-fit assemblies of the tray dismantling machine 8 to the coil dismantling area 26. The input side of the third conveyor line 15 passes through the tray dismantling machine 8, and the output side is docked with the input side of the coil dismantling area 26, so that it is convenient to convey the multi-layer low-voltage coil press-fit assemblies in the tray dismantling machine 8 to the coil dismantling area 26 one by one; when the third conveyor line 15 conveys the low-voltage coil press-fit assemblies of the lowest layer in the tray dismantling machine 8 to the coil dismantling area 26, the tray dismantling machine 8 then lowers the remaining layers of low-voltage coil press-fit assemblies, and repeats the operation, so that the multi-layer low-voltage coil press-fit assemblies in the tray dismantling machine 8 can be conveyed to the coil dismantling area 26 one by one. Of course, both the second conveyor line 12 and the third conveyor line 15 can adopt roller conveyor lines.

[0098] That is to say, in the automatic press-assembly production line for low-voltage coils for distribution transformers provided by the present scheme, a stacking machine 5 is added downstream of the coil press-assembly area 21 to facilitate the stacking of multiple low-voltage coil press-assembly components, which are then transported together to the heating device for heating treatment. In addition, a disassembly machine 8 is also added upstream of the coil disassembly area 26 to facilitate the disassembly of multiple stacked low-voltage coil press-assembly components one by one. In this way, not only the space occupied by multiple low-voltage coil press-assembly components is saved, but also the capacity of the heating device for heating and treating the low-voltage coil press-assembly components can be increased.

[0099] Specifically, Figure 1 As shown, the transfer device includes: a transfer vehicle 2, a fourth conveyor line 13, a fifth conveyor line and a sixth conveyor line 14;

[0100] The fifth conveying line is arranged in the heating device;

[0101] The transfer vehicle 2 is used to transfer the multi-layer low-voltage coil press-fit assembly of the stacking machine 5 to the fourth conveyor line 13, and the fourth conveyor line 13 is used to convey the multi-layer low-voltage coil press-fit assembly to the fifth conveyor line;

[0102] The fifth conveyor line is also used to convey the multi-layer low-voltage coil press-assembled components after heat treatment to the sixth conveyor line 14, and the sixth conveyor line 14 is used to convey the multi-layer low-voltage coil press-assembled components to the transfer vehicle 2, and the transfer vehicle 2 is also used to transfer the multi-layer low-voltage coil press-assembled components to the depaneling machine 8.

[0103] It should be noted that, as described above, the heating device can adopt a curing oven 6, which has an entrance door and an exit door that can be opened and closed, and the input side of the fifth conveyor line is distributed on the inner side of the entrance door of the curing oven 6, and the output side is distributed on the inner side of the exit door of the curing oven 6; the fourth conveyor line 13 is arranged on the outer side of the entrance door of the curing oven 6, and the sixth conveyor line 14 is arranged on the outer side of the exit door of the curing oven 6; wherein, the output side of the fourth conveyor line 13 is butted against the input side of the fifth conveyor line, so that when the entrance door of the curing oven 6 is in an open state, the fourth conveyor line 13 can conveniently convey the multi-layer low-voltage coil press-fitting components to the fifth conveyor line; the output side of the fifth conveyor line is connected to the input side of the sixth conveyor line 14 The entry side is docked, so that when the exit door of the curing furnace 6 is in an open state, the fifth conveyor line can facilitate the delivery of the multi-layer low-voltage coil press-fit assembly after the heating treatment to the sixth conveyor line 14; of course, the transfer vehicle 2 can be moved to the output side of the stacking machine 5 and the input side of the fourth conveyor line 13 respectively, so that the multi-layer low-voltage coil press-fit assembly of the stacking machine 5 can be transferred to the fourth conveyor line 13 through the transfer vehicle 2, and the transfer vehicle 2 can also be moved to the output side of the sixth conveyor line 14 and the input side of the depaneling machine 8 respectively. The multi-layer low-voltage coil press-fit assembly of the sixth conveyor line 14 is transferred to the depaneling machine 8 through the transfer vehicle 2; wherein, the transfer vehicle 2 can adopt an RGV conveyor vehicle. Of course, the fourth conveyor line 13, the fifth conveyor line and the sixth conveyor line 14 can all adopt roller conveyor lines. In other words, the transfer device adopts a combination of a transfer vehicle + a conveyor line, which is not only convenient for transferring the multi-layer low-voltage coil press-fit assembly to the heating device, but also avoids the use of the structure of the conveyor line throughout the process, which can help save the space occupied by the transfer device.

[0104] Furthermore, if Figure 1 As shown, the automatic press-assembly production line for low-voltage coils for distribution transformers provided in the embodiment of the present invention further includes a buffer conveyor line 7;

[0105] The sixth conveyor line 14 is also used to convey the multi-layer low-voltage coil press-fit assembly after the heating treatment to the buffer conveyor line 7;

[0106] The buffer conveyor line 7 is used to buffer the multi-layer low-voltage coil press-fit components;

[0107] The transfer vehicle 2 is also used to transfer the multi-layer low-voltage coil press-assembled components of the cache conveyor line 7 to the depaneling machine 8.

[0108] It should be noted that the output side of the sixth conveyor line 14 is docked with the input side of the cache conveyor line 7, so that the sixth conveyor line 14 can transport the multi-layer low-voltage coil press-fit assembly after the heating treatment to the cache conveyor line 7, and the transfer vehicle 2 can move to dock with the output side of the cache conveyor line 7, so that the cache conveyor line 7 can transport the multi-layer low-voltage coil press-fit assembly to the transfer vehicle 2; wherein, the cache conveyor line 7 can adopt a roller conveyor line. That is to say, in the automatic press-fit production line for low-voltage coils for distribution transformers provided by this scheme, a cache conveyor line 7 is added downstream of the sixth conveyor line 14, so that the multi-layer low-voltage coil press-fit assembly can be cached on the cache conveyor line 7. Of course, the number of multi-layer low-voltage coil press-fit assemblies cached on the cache conveyor line 7 can be multiple. In this way, it is not only convenient for the cache cooling of the multi-layer low-voltage coil press-fit assembly, but also reserves time for the disassembling machine 8, so that the disassembling machine 8 can orderly disassemble the multi-layer low-voltage coil press-fit assemblies one by one.

[0109] Furthermore, if Figure 1 As shown, the automatic press-assembly production line for low-voltage coils for distribution transformers provided in the embodiment of the present invention further includes a guide rail 31;

[0110] The fourth conveyor line 13 and the buffer conveyor line 7 are arranged in parallel on both sides of the heating device along the first direction; wherein the fourth conveyor line 13 and the buffer conveyor line 7 are arranged in parallel along the first direction, and can be distributed one by one on the outside of the entrance door and the exit door of the curing furnace 6;

[0111] The stacking machine 5 and the unstacking machine 8 are arranged in parallel along the second direction, wherein the second direction is parallel to the first direction; wherein, Figure 1 As shown, the second direction and the first direction are both horizontal directions, and may be perpendicular to the conveying direction of the second conveying line 12;

[0112] The guide rail 31 is arranged along the first direction or the second direction, and is distributed between the stacking machine 5 and the unpacking machine 8, and the fourth conveying line 13 and the buffer conveying line 7; that is, the guide rail 31 is distributed on one side of the stacking machine 5 and the unpacking machine 8, and is also distributed on one side of the fourth conveying line 13 and the buffer conveying line 7;

[0113] The transfer vehicle 2 can slide along the guide rails 31 .

[0114] It should be noted that if Figure 1As shown, the guide rail 31 can be a double guide rail; the transfer vehicle 2 has four stations along the guide rail 31, which are the first input station, the first output station, the second input station and the second output station respectively; wherein, when the transfer vehicle 2 moves along the guide rail 31 to the first input station, the input side of the transfer vehicle 2 is docked with the output side of the stacking machine 5, for receiving the multi-layer low-voltage coil press-fit components delivered from the stacking machine 5 side; when the transfer vehicle 2 moves along the guide rail 31 to the first output station, the output side of the transfer vehicle 2 is docked with the input side of the fourth conveyor line 13, for conveying the multi-layer low-voltage coil press-fit components to the fourth conveyor line 13; when the transfer vehicle 2 moves along the guide rail 31 to the second input station, the input side of the transfer vehicle 2 is docked with the output side of the cache conveyor line 7, for receiving the multi-layer low-voltage coil press-fit components delivered from the cache conveyor line 7; when the transfer vehicle 2 moves along the guide rail 31 to the second output station, the output side of the transfer vehicle 2 is docked with the input side of the depaneling machine 8, for conveying the multi-layer low-voltage coil press-fit components to the depaneling machine 8. That is to say, the present solution is designed in such a way that the transfer vehicle 2 can slide quickly along the guide rail 31 to the corresponding workstation, and then the transfer vehicle 2 is convenient for docking with the corresponding components, which is convenient for transferring the multi-layer low-voltage coil press-fit assembly from the stacking machine 5 to the fourth conveyor line 13, and transferring the multi-layer low-voltage coil press-fit assembly from the buffer conveyor line 7 to the de-stack machine 8. Moreover, such a design also makes the press-fit production line have the characteristics of reasonable layout and small space occupation. Of course, the transfer vehicle 2 also has the function of inputting and outputting the multi-layer low-voltage coil press-fit assembly, such as having a roller row structure.

[0115] In this scheme, if Figure 1 As shown, the automatic press-assembly production line for low-voltage coils for distribution transformers provided in the embodiment of the present invention further includes: a detection device and a seventh conveyor line 11;

[0116] like Figure 2 As shown, the automatic press-assembly production line for low-voltage coils for distribution transformers is also provided with a coil detection area 27;

[0117] The seventh conveying line 11 is used to convey the low-voltage coils in the coil disassembly and assembly area 26 to the coil detection area 27;

[0118] The detection device is used to detect the outer dimensions of the low-voltage coil in the coil detection area 27;

[0119] The upper and lower wire device is also used to lower the low-voltage coil in the coil detection area 27 .

[0120] The seventh conveyor line 11 is arranged between the coil disassembly and assembly area 26 and the coil detection area 27, and its input side is docked with the output side of the coil disassembly and assembly area 26, and the output side is docked with the input side of the coil detection area 27, so as to facilitate the low-voltage coil to be transported from the coil disassembly and assembly area 26 to the coil detection area 27 through the seventh conveyor line 11; the detection device can adopt a robot vision detection device to detect the outer dimensions of the low-voltage coil in the coil detection area 27, so as to detect the accuracy of the low-voltage coil pressing dimensions; wherein the outer dimensions of the low-voltage coil include three-dimensional and two-dimensional outer dimensions, and the above dimensions of the low-voltage coil can be photographed by the camera of the robot vision detection device, and then fed back to the robot. In addition, the robot vision detection device can be located at the head of the robot arm 4.

[0121] That is to say, the press assembly production line is composed of the above-mentioned devices, and two adjacent partial devices can be connected by a roller conveyor line; of course, each of the above-mentioned roller conveyor lines can be started and stopped at any time; wherein the above-mentioned devices are:

[0122] 1. Coil loading and unloading device with KBK lifting device.

[0123] 2. Coil assembly and disassembly device with robot and press.

[0124] 3. A coil destacking device with a destacking machine.

[0125] 4. Coil transfer device with RGV transfer vehicle.

[0126] 5. Coil heating and caching device with curing oven and caching conveyor line.

[0127] 6. A detection device with a robot vision detection device.

[0128] In addition, if Figure 2 As shown, the pressing production line is divided into a coil loading area 20, a coil pressing area 21, a coil stacking area 22, a coil heating area 23, a coil cooling buffer area 24, a coil disassembly area 25, a coil disassembly area 26, a coil detection area 27, and a coil offline area 28 along the flow direction of the low-voltage coil.

[0129] In addition, in order to better understand this press-fitting production line, its working process is described as follows:

[0130] The low-voltage coil 18 to be pressed is hoisted onto the lower pressing plate 19 of the coil upper line area 20 through the upper and lower line devices (i.e., the KBK hoisting device), and the low-voltage coil 18 to be pressed and the lower pressing plate 19 are transported to the coil pressing area 21 together through the first conveyor line 10. The robot 4 installs the upper pressing plate 17 to the upper part of the low-voltage coil 18 to be pressed, and then the first press 3 presses the low-voltage coil 18 to be pressed with the upper pressing plate 17 and the lower pressing plate 19 to the required size. The robot 4 then uses the screw 29 and the nut 30 to fasten the upper pressing plate 17 and the lower pressing plate 19 together to form a low-voltage coil press-fit assembly. The low-voltage coil press-fit assembly is then transported to the coil stacking area 22 through the second conveyor line 12, and then the low-voltage coil press-fit assembly is stacked into two layers by the stacking machine 5. The stacked low-voltage coil press-fit assembly is then transported to the coil stacking area 22 through the transfer vehicle 2 and the fourth The conveyor line 13 conveys the low-voltage coil to the curing furnace 6 in the coil heating area 23 for heating treatment. After the heating treatment, the low-voltage coil press-fit assembly is conveyed to the cache conveyor line 7 in the coil cooling cache area 24 through the sixth conveyor line 14 for cooling. After cooling, the low-voltage coil press-fit assembly is transferred to the coil disassembly area 25 by the transfer vehicle 2, and then conveyed to the coil disassembly area 26 through the third conveyor line 15 after passing through the disassembly machine 8. The robot 4 first removes the nut 30 and takes off the upper pressure plate 17, and then conveys the low-voltage coil to the coil detection area 27 through the seventh conveyor line 11, and uses the robot visual detection device to detect the external dimensions of the low-voltage coil. After the detection, the low-voltage coil can be conveyed to the coil offline area 28 through the eighth conveyor line, and finally the low-voltage coil is lifted out of the offline through the upper and lower line devices.

[0131] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0132] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic press-fit production line for low-voltage coils for distribution transformers, characterized in that: include: The device comprises an upper and lower wire device, an assembly and disassembly device, a transfer device and a heating device, and is also provided with a coil pressing area (21) and a coil disassembly area (26); The upper and lower wire devices are used to load the low-voltage coil (18) to be pressed onto the coil pressing area (21); The assembly and disassembly device is used to press-fit the low-voltage coil (18) to be pressed in the coil pressing area (21) to form a low-voltage coil pressing assembly; The transfer device is used to transfer the low-voltage coil press-fitting assembly in the coil press-fitting area (21) to the heating device; The heating device is used to heat the low-voltage coil press-fit assembly; The transfer device is also used to transfer the low-voltage coil press-fit assembly after the heating treatment in the heating device to the coil disassembly area (26); The assembly and disassembly device is also used to disassemble the low-voltage coil press-fit assembly in the coil assembly and disassembly area (26) to the low-voltage coil; The upper and lower wire device is also used for lowering the low-voltage coil in the coil assembly and disassembly area (26).

2. The automatic press-fit production line for low-voltage coils for distribution transformers according to claim 1 is characterized in that: Also includes: A first conveying line (10), a lower pressing plate (19), an upper pressing plate (17) and a fixing assembly; The lower pressing plate (19) is placed on the first conveying line (10); The upper and lower line devices are used to place the low-voltage coil (18) to be pressed onto the lower pressing plate (19) of the first conveying line (10); The first conveying line (10) is used to convey the lower pressing plate (19) and the low-voltage coil (18) to be pressed to the coil pressing area (21); The assembly and disassembly device is used to first place the upper pressure plate (17) on the low-voltage coil (18) to be pressed in the coil pressing area (21) and press the upper pressure plate (17) downward, and then fasten the upper pressure plate (17) and the lower pressure plate (19) through the fixing assembly to form the low-voltage coil pressing assembly, and is also used to disassemble the fixing assembly in the low-voltage coil pressing assembly in the coil disassembly and assembly area (26) and remove the upper pressure plate (17).

3. The automatic press-fitting production line for low-voltage coils for distribution transformers according to claim 2 is characterized in that: The assembly and disassembly device comprises: a robot (4) and a first press (3); The robot (4) is used to first place the upper pressing plate (17) on the low-voltage coil (18) to be pressed in the coil pressing area (21), and the first press (3) is then used to press the upper pressing plate (17) downward, and the robot (4) then fastens the upper pressing plate (17) and the lower pressing plate (19) through the fixing assembly to form the low-voltage coil pressing assembly, and the robot (4) is also used to disassemble the fixing assembly in the low-voltage coil pressing assembly in the coil disassembly area (26) and remove the upper pressing plate (17).

4. The automatic press-assembly production line for low-voltage coils for distribution transformers according to claim 3 is characterized in that: The fixing assembly comprises: two screw rods (29) and two nuts (30); The automatic press-fit production line for low-voltage coils for distribution transformers also includes two screw drive assemblies; One end of the two screw rods (29) is rotatably connected to two opposite ends of the lower pressing plate (19), and both have switchable horizontal and vertical states; Two opposite ends of the upper pressing plate (17) are both provided with notches (17.1); After the first press (3) presses the upper pressing plate (17) downward, the two screw drive assemblies are used to drive the two screws (29) to switch to a vertical state one by one, so that the two screws (29) are placed one by one in the two notches (17.1) of the upper pressing plate (17). The robot (4) is also used to tighten the two nuts (30) on the two screws (29) one by one, so that the two nuts (30) press the upper pressing plate (17); After the low-voltage coil pressing assembly is transferred to the coil disassembly area (26), the robot (4) is also used to remove the two nuts (30) one by one, and is also used to drive the two screw rods (29) to switch to a horizontal state respectively, so that the two screw rods (29) are separated from the two notches (17.1) of the upper pressure plate (17) one by one. At this time, the robot (4) is also used to remove the upper pressure plate (17).

5. The automatic press-assembly production line for low-voltage coils for distribution transformers according to claim 4 is characterized in that: The screw drive assembly includes a screw lifting assembly; The screw rod lifting assembly is arranged in the coil pressing area (21) and is used to lift the screw rod (29) in the coil pressing area (21) to a vertical state.

6. The automatic press-assembly production line for low-voltage coils for distribution transformers according to claim 1 is characterized in that: Also includes: A second conveying line (12), a third conveying line (15), a tray stacking machine (5) and a tray disassembling machine (8); The second conveying line (12) is used to sequentially convey the low-voltage coil pressing assemblies in the coil pressing area (21) to the stacking machine (5); The stacking machine (5) is used to stack the low-voltage coil press-fit assemblies conveyed by the second conveying line (12) into multiple layers of the low-voltage coil press-fit assemblies in sequence; The transfer device is used to transfer the multi-layer low-voltage coil press-fit assembly of the stacking machine (5) to the heating device, and is used to transfer the multi-layer low-voltage coil press-fit assembly after the heating treatment in the heating device to the destacking machine (8); The disassembling machine (8) is used to disassemble the multiple layers of the low-voltage coil press-fit assemblies into a plurality of the low-voltage coil press-fit assemblies; The third conveying line (15) is used to sequentially convey the plurality of low-voltage coil press-fit assemblies of the depaneling machine (8) to the coil depaneling area (26).

7. The automatic press-assembly production line for low-voltage coils for distribution transformers according to claim 6 is characterized in that: The transfer device comprises: a transfer vehicle (2), a fourth conveying line (13), a fifth conveying line and a sixth conveying line (14); The fifth conveying line is arranged in the heating device; The transfer vehicle (2) is used to transfer the multiple layers of the low-voltage coil press-fit assemblies of the stacking machine (5) to the fourth conveyor line (13), and the fourth conveyor line (13) is used to convey the multiple layers of the low-voltage coil press-fit assemblies to the fifth conveyor line; The fifth conveyor line is also used to convey the multi-layer low-voltage coil press-fit assembly after the heat treatment to the sixth conveyor line (14), and the sixth conveyor line (14) is used to convey the multi-layer low-voltage coil press-fit assembly to the transfer vehicle (2), and the transfer vehicle (2) is also used to transfer the multi-layer low-voltage coil press-fit assembly to the depaneling machine (8).

8. The automatic press-assembly production line for low-voltage coils for distribution transformers according to claim 7 is characterized in that: It also includes a buffer conveying line (7); The sixth conveyor line (14) is also used to convey the multi-layer low-voltage coil press-fit assembly after the heating treatment to the buffer conveyor line (7); The buffer conveyor line (7) is used to buffer multiple layers of the low-voltage coil press-fit components; The transfer vehicle (2) is also used to transfer the multi-layer low-voltage coil press-fit assembly of the cache conveyor line (7) to the depaneling machine (8).

9. The automatic press-assembly production line for low-voltage coils for distribution transformers according to claim 8 is characterized in that: Also includes a guide rail (31); The fourth conveying line (13) and the buffer conveying line (7) are arranged in parallel on both sides of the heating device along a first direction; The disk stacking machine (5) and the disk unpacking machine (8) are arranged in parallel along a second direction, wherein the second direction is parallel to the first direction; The guide rail (31) is arranged along the first direction or the second direction, and is distributed between the disk stacking machine (5) and the disk unpacking machine (8), and between the fourth conveying line (13) and the buffer conveying line (7); The transfer vehicle (2) is capable of sliding along the guide rail (31).

10. The automatic press-assembly production line for low-voltage coils for distribution transformers according to claim 1 is characterized in that: Also includes: A detection device and a seventh conveying line (11); The automatic press-assembly production line for low-voltage coils for distribution transformers is also provided with a coil detection area (27); The seventh conveying line (11) is used to convey the low-voltage coils in the coil disassembly and assembly area (26) to the coil detection area (27); The detection device is used to detect the external dimensions of the low-voltage coil in the coil detection area (27); The upper and lower wire device is also used to lower the low-voltage coil in the coil detection area (27).

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