Transformer assembly device

Abstract

To provide a transformer assembly device that can automate the transformer production process with a simpler configuration.SOLUTION: A transformer assembly device is provided for assembling a transformer in which an iron core, made of multiple cylindrical bodies whose both ends 1121, 1122 overlap in the circumferential direction and are overlapped radially, is inserted into a pair of adjacent coils 200, and is provided with a guide member 30 that moves inside each coil 200 and guides the insertion of the iron core into the coil 200.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a transformer assembling apparatus. [Background technology]

[0002] The manufacturing process of a transformer includes, for example, a step of inserting an iron core formed by radially stacking multiple cylindrical bodies having overlapping ends into a pair of adjacent coils whose axial lengths are parallel, with the ends spaced apart and open (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-135058 Summary of the Invention [Problem to be solved by the invention]

[0004] The process of inserting the iron core into the coil as described above requires the collaboration of multiple workers, which results in low productivity, and because it is a manual process, there is a problem that quality can vary depending on the level of skill of the workers.

[0005] In contrast, although Patent Document 1 discloses automation in the transformer production process, it uses a number of different auxiliary jigs before and after inserting the iron core into the coil, resulting in a complex configuration and complicated operation of the auxiliary jigs.

[0006] The present invention has been made in view of the above circumstances, and has as its object to provide a transformer assembly device that can automate the transformer production process with a simpler configuration. [Means for solving the problem]

[0007] The transformer assembly device of the present invention is a transformer assembly device that assembles a transformer in which an iron core, made of multiple cylindrical bodies whose both ends overlap in the circumferential direction and are overlapped radially, is inserted into a pair of adjacent coils, and is equipped with a guide member that moves inside each coil and guides the insertion of the iron core into the coil. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a transformer assembly device that can automate the transformer production process with a simpler configuration. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing an example of a transformer. [Figure 2] FIG. 2 is a schematic side view showing the configuration of a wound core. [Figure 3] 1 is a perspective view of a transformer assembly device according to an embodiment of the present invention. [Figure 4] FIG. 2 is a front view of the transformer assembly device according to the present embodiment. [Figure 5] 1 is a schematic diagram illustrating a main part of a transformer assembly device according to an embodiment of the present invention. [Figure 6] 4A to 4C are explanatory diagrams illustrating the process of incorporating a wound core into a coil in the transformer assembly device according to the present embodiment. [Figure 7] 4A to 4C are explanatory diagrams illustrating the process of incorporating a wound core into a coil in the transformer assembly device according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will now be described with reference to the drawings showing embodiments thereof.

[0011] FIG. 1 is a perspective view showing an example of a transformer. In FIG. 1, reference numeral 300 denotes the transformer. The transformer 300 is configured by incorporating one wound iron core 100 (iron core) into two adjacent coils 200. For example, each coil 200 has a hollow rounded rectangular shape in axial cross section, and the wound iron core 100 has an oval shape in axial cross section.

[0012] Fig. 2 is a schematic side view showing the configuration of wound core 100. The view within the ellipse in Fig. 2 is an enlarged view of the portion of wound core 100 enclosed by the dashed ellipse.

[0013] Generally, wound core 100 is obtained by stacking a predetermined number of thin, rectangular core elements, each of which is made by cutting a hoop material such as a silicon steel strip to a predetermined length in the longitudinal direction, and bending the stacked elements to form an ellipse in cross section. In this case, the length of each core element, in other words, the circumferential length of each ellipse core element (hereinafter referred to as a cylindrical element) 111, is longer the outermost cylindrical element 111.

[0014] More specifically, this bending process is performed for each unit number (e.g., 7 to 10) of core blanks, and multiple cylindrical bodies 111 (hereinafter referred to as core blocks 110) obtained from the unit number of core blanks are stacked radially to manufacture the wound core 100. Fig. 2 shows an example in which one core block 110 is made up of eight cylindrical bodies 111, but the present invention is not limited to this.

[0015] That is, in the wound core 100, a plurality of core blocks 110 are overlapped in the radial direction on the same axis, and a plurality of cylindrical bodies 111 are overlapped in the radial direction on the same axis in each core block 110. In the wound core 100, of two radially adjacent core blocks 110, the outer peripheral surface of the inner core block 110 contacts the inner peripheral surface of the outer core block 110, and of two radially adjacent cylindrical bodies 111, the outer peripheral surface of the inner cylindrical body 111 contacts the inner peripheral surface of the outer cylindrical body 111.

[0016] The wound core 100 has an overlapping portion 112 at one end 102 in the longitudinal direction, where both ends 1121, 1122 of each cylindrical body 111 overlap. That is, in each core block 110, the inner end 1121 and the outer end 1122 at the overlapping portion 112 of the cylindrical body 111 overlap in the radial direction of the core block 110, in other words, in the overlapping direction of the cylindrical bodies 111. In each core block 110, the overlapping portions 112 of the cylindrical bodies 111 are arranged so as to be offset by a predetermined interval in one direction in the circumferential direction. Figure 2 shows an example in which the overlapping portions 112 of the cylindrical bodies 111 are offset clockwise.

[0017] That is, in each core block 110, the overlapping portions 112 of the multiple cylindrical bodies 111 do not overlap one another in the radial direction. In other words, of two cylindrical bodies 111 adjacent in the radial direction, the outer end 1122 of the inner cylindrical body 111 does not overlap the inner end 1121 of the outer cylindrical body 111 in the radial direction.

[0018] To incorporate the wound core 100 having such a configuration into the coil 200, two coils 200 are arranged next to each other with their axial lengths parallel and their outer peripheral surfaces in contact, and then one end 102 of the wound core 100 is opened and inserted into the through-holes 201 of each coil 200. That is, the inner end 1121 and outer end 1122 of each cylindrical body 111 of each core block 110 are separated, and the wound core 100 is deformed into an inverted U-shape and inserted into the through-holes 201 of each coil 200, and then returned to its original shape.

[0019] The transformer assembly device 1 according to this embodiment can automate the process of assembling such wound core 100 into the coil 200. The process of assembling such wound core 100 into the coil 200 is performed by separating each core block 110 from the wound core 100 and for each core block 110.

[0020] Fig. 3 is a perspective view of the transformer assembly apparatus 1 according to this embodiment, and Fig. 4 is a front view of the transformer assembly apparatus 1 according to this embodiment. For ease of explanation, part of the transformer assembly apparatus 1 is not shown in Fig. 3.

[0021] The transformer assembly apparatus 1 according to this embodiment includes a frame 90, which is fitted with mounting tables 10, 10 on which two coils 200 are placed, a position adjustment mechanism 80 that finely adjusts the position of the coil 200 on the mounting table 10 left and right and front and back, a moving mechanism 20 that holds and moves the core block 110, a guide member 30 that guides the insertion of the wound core 100 into the coil 200, a drive mechanism 31 that moves the guide member 30 up and down and left and right, and a control unit 40 that controls the drive of the moving mechanism 20, the drive mechanism 31, and the position adjustment mechanism 80.

[0022] The frame 90 extends in the vertical direction and includes four columns 91 arranged to form a rectangle in plan view (the front right column 91 is not shown in FIG. 3). The columns 91 are connected at their upper ends by upper cross members 92 and at their lower ends by lower cross members 93.

[0023] The upper-end horizontal member 92 is bridged between the columns 91 corresponding to each other in the left-right direction and between the columns 91 corresponding to each other in the front-rear direction. Similarly to the upper-end horizontal member 92, the lower-end horizontal member 93 is bridged between the columns 91 corresponding to each other in the left-right direction and between the columns 91 corresponding to each other in the front-rear direction. In other words, the four columns 91 are connected by the upper-end horizontal member 92 and the lower-end horizontal member 93.

[0024] Two mounting tables 10 are provided in the middle of the frame 90 in the vertical direction. Each mounting table 10 has a thick plate shape and is provided so that the thickness direction is the vertical direction. The two mounting tables 10 are arranged at a predetermined interval in the left-right direction and are arranged side by side on the same plane. Each mounting table 10 has a rectangular cutout 101 (see FIG. 5) formed in the edge portion facing the other mounting table 10. In other words, of the two mounting tables 10, the left mounting table 10 is approximately C-shaped in plan view, and the right mounting table 10 is approximately inverted C-shaped in plan view. In plan view, the size of the cutout 101 is approximately the same as the size of the through hole 201 of the coil 200.

[0025] When assembling the wound core 100 into the coil 200, as described above, the two coils 200 are placed side by side on the two mounting tables 10, with their axial lengths aligned vertically and their outer circumferential surfaces in contact with each other. At this time, the position adjustment mechanism 80 finely adjusts the position of the coil 200.

[0026] The position adjustment mechanism 80 includes a clamping unit 82 that clamps each coil 200 placed on the mounting table 10 from behind, a guide rail 83 that extends in the left-right direction and guides the movement of the clamping unit 82, and a servo motor (not shown) that moves the clamping unit 82 left-right and front-back along the guide rail 83. The clamping unit 82 is engaged with the guide rail 83 so as to be slidable on the guide rail 83.

[0027] When two coils 200 are placed on the two mounting tables 10, each clamping unit 82 clamps the inner and outer surfaces of the coil 200, and the control unit 40 controls the servo motor to move the clamping unit 82 so that the position of the through hole 201 of the coil 200 is aligned with the notch 101 of the mounting table 10, i.e., so that the through hole 201 of the coil 200 is positioned directly above the notch 101. The position adjustment mechanism 80 has a handle 81 for manually moving the clamping portion 82, and the operator may fine-tune the position of the coil 200 by appropriately operating the handle 81.

[0028] The moving mechanism 20 includes a gripping portion 21 (holding member) that grips one iron core block 110, a guide portion 23 that guides the gripping portion 21 in the vertical direction, a connecting portion 22 that connects the gripping portion 21 to the guide portion 23, and a servo motor (not shown) that moves the gripping portion 21 up and down along the guide portion 23.

[0029] The gripping portion 21 is approximately hook-shaped and is arranged above the mounting table 10. It grips the portion of the core block 110 that is related to the other end 101 opposite to one end 102 of the wound core 100, i.e., the end opposite to the end where the overlapping portion 112 is formed, and descends from above a pair of adjacent coils 200 toward the coils 200 until the core block 110 is inserted into the coils 200.

[0030] The guide part 23 is provided behind the mounting table 10 and has a round bar 231 extending in the vertical direction and holding bars 232 provided on the left and right sides of the round bar 231 and extending in the vertical direction. The two holding bars 232 are parallel to each other and fixed to the frame 90. The round bar 231 is parallel to the holding bar 232, and both ends are held by the holding bars 232 so as to be rotatable around their axes. In addition, a thread root is formed helically on the outer circumferential surface of the round bar 231 along the length of the round bar 231.

[0031] The connecting part 22 is shaped like a square bar, with the grip part 21 attached to the underside of one end and an engagement hole 221 formed in the other end for engaging with a round bar 231. The engagement hole 221 passes through the connecting part 22 in the vertical direction, and a thread is formed on the circumferential surface of the engagement hole 221 for threading into the thread root of the round bar 231. In other words, the round bar 231 is fitted into the engagement hole 221 of the connecting part 22, and the thread of the engagement hole 221 threads into the thread root of the round bar 231.

[0032] The control unit 40 drives the servo motor to rotate the round bar 231. When the round bar 231 rotates forward or backward, the connecting part 22 moves in the axial direction of the round bar 231, i.e., upward or downward. This causes the gripping part 21 to move up or down.

[0033] In addition, the moving mechanism 20 has a handle 233 for manually moving the gripping portion 21 (connecting portion 22), and the operator can also move the gripping portion 21 (connecting portion 22) in the vertical direction by appropriately operating the handle 233.

[0034] Fig. 5 is a schematic diagram illustrating the main parts of the transformer assembly apparatus 1 according to this embodiment. Fig. 5 shows the positional relationship between the gripping part 21 of the moving mechanism 20, the mounting table 10, and the guide member 30, and for ease of explanation, shows the coil 200 in a vertical cross section, with the core block 110 being gripped by the gripping part 21 above the coil 200.

[0035] As shown in FIGS. 3 to 5, below the table 10, a guide member 30 and a drive mechanism 31 for moving the guide member 30 up and down and left and right are provided.

[0036] The guide member 30 has two guide portions, 30a and 30b. The guide portions 30a and 30b can be moved up and down and left and right by a drive mechanism 31. The guide portions 30a and 30b are made of rectangular metal plates extending in the axial direction of the coil 200, i.e., the up and down direction. The guide portions 30a and 30b are arranged opposite each other in the left and right direction. More specifically, the guide portion 30a is arranged directly below the notch 101 of one of the mounting tables 10, and the guide portion 30b is arranged directly below the notch 101 of the other mounting table 10.

[0037] Therefore, when guide portion 30a and guide portion 30b are moved up and down by drive mechanism 31, they are inserted into and removed from each coil 200. That is, guide portion 30a and guide portion 30b move upward through notch 101 of each mounting table 10 and through hole 201 of coil 200 (see dashed arrows in FIG. 5). That is, guide portion 30a and guide portion 30b can move upward from the standby position shown in FIG. 5 to a position (hereinafter referred to as the uppermost position) where their leading ends come out of the upper end surface of coil 200, passing through notch 101 of mounting table 10 and through hole 201 of coil 200.

[0038] The drive mechanism 31 has a holder 33a that holds the lower end of the guide portion 30a, and a holder 33b that holds the lower end of the guide portion 30b. The drive mechanism 31 also includes a guide rail 32 that extends in the left-right direction and guides the movement of the holder 33a (guide portion 30a) and the holder 33b (guide portion 30b), a handle 31a that moves the holder 33a left and right along the guide rail 32, and a handle 31b that moves the holder 33b left and right along the guide rail 32. The drive mechanism 31 also includes an upward movement mechanism 34a that moves the holder 33a up and down, and an upward movement mechanism 34b that moves the holder 33b up and down.

[0039] The holding portion 33a and the holding portion 33b are engaged with the guide rail 32 so as to be slidable on the guide rail 32. For example, the control portion 40 can move the holding portion 33a left and right along the guide rail 32, and the holding portion 33b can move left and right along the guide rail 32, by appropriately controlling a servo motor (not shown) for rotating the handles 31a and 31b.

[0040] The upward movement mechanism 34a is provided rearward of the guide unit 30a and has a configuration similar to that of the guide unit 23. That is, the upward movement mechanism 34a has a spiral thread formed on its outer circumferential surface in the longitudinal direction, and includes a round bar 341a extending in the vertical direction, and holding bars 342a provided parallel to the round bar 341a on both the left and right sides of the round bar 341a. The round bar 341a is held at both ends by the two holding bars 342a so as to be rotatable around its axis.

[0041] Similarly to the upper movement mechanism 34a, the upper movement mechanism 34b has a spiral thread formed on its outer circumferential surface in the lengthwise direction, and includes a round bar 341b extending in the vertical direction and retaining bars 342ab provided on the left and right sides of the round bar 341b in parallel with the round bar 341b. The round bar 341b is held at both ends by the two retaining bars 342b so as to be rotatable around its axis.

[0042] The holding portion 33a has a hollow rectangular shape in a plan view, and the guide portion 30a is attached to the outer surface of the side wall on the holding portion 33b side. The holding portion 33a also has a through-hole (not shown) with a thread that screws into the thread root of the round rod 341a of the upward movement mechanism 34a, and the round rod 341a is fitted into the through-hole of the holding portion 33a.

[0043] The holding portion 33b has a hollow rectangular shape in a plan view, and the guide portion 30b is attached to the outer surface of the side wall on the holding portion 33a side. The other configurations of the holding portion 33b are the same as those of the holding portion 33a, so detailed explanations will be omitted.

[0044] The control unit 40 drives a servo motor (not shown) to rotate the round bar 341a, causing the round bar 341a to rotate forward or backward, thereby moving the holding portion 33a (guide portion 30a) in the axial direction of the round bar 341a, i.e., upward or downward. In addition, the control unit 40 drives a servo motor (not shown) to rotate the round bar 341b, causing the round bar 341b to rotate forward or backward, thereby moving the holding portion 33b (guide portion 30b) in the axial direction of the round bar 341b, i.e., upward or downward.

[0045] 6 and 7 are explanatory diagrams illustrating the process of assembling the wound core 100 into the coil 200 in the transformer assembly apparatus 1 according to this embodiment. The process of assembling the wound core 100 into the coil 200 is performed by repeating the process of inserting the coil 200 into each core block 110 as shown in FIGS. 6A to 7F. For ease of explanation, the mounting tables 10 are not shown in Fig. 7. The following description will start from a state in which two coils 200 are mounted adjacent to each other on two mounting tables 10 and fine adjustment of their positions is completed.

[0046] First, the gripping unit 21 grips one core block 110, and the control unit 40 drives the servo motor to rotate the round rods 341a and 341b, thereby moving the guides 30a and 30b to the uppermost positions (see FIG. 6A). The guides 30a and 30b pass through the notch 101 in the mounting table 10 and the through-hole 201 in the coil 200 and move to the uppermost positions.

[0047] Next, the control unit 40 drives the servo motor to rotate the round bar 231 in the reverse direction, thereby lowering the gripping unit 21 (core block 110). When the core block 110 has been lowered to an appropriate position, the overlapping units 112 of the cylindrical bodies 111 are released, the inner end portions 1121 and the outer end portions 1122 are separated, and all of the inner end portions 1121 are hooked onto the tip portions of the guide portions 30a that have come out from the upper end surface of the coil 200, and all of the outer end portions 1122 are hooked onto the tip portions of the guide portions 30b that have come out from the upper end surface of the coil 200 (see FIG. 6B). For example, the overlapping units 112 are released by an operator or by using a predetermined mechanism by pulling the left and right portions of the core block 110 corresponding to the inner end portions 1121 and the outer end portions 1122 in opposite directions from inside the core block 110.

[0048] That is, the inner end 1121 of each cylindrical body 111 is held in contact with the outer surface of guide portion 30a, and the outer end 1122 of each cylindrical body 111 is held in contact with the outer surface of guide portion 30b (see the dashed circle in Figure 6B), and guide portion 30a and guide portion 30b hold the inner end 1121 and outer end 1122 of each cylindrical body 111 of the iron core block 110 in a mutually spaced state (hereinafter referred to as the spaced state).

[0049] Thereafter, the control unit 40 drives the servo motor to lower the gripping unit 21 (core block 110), and simultaneously drives the servo motor to lower the guide units 30a and 30b. That is, when the gripping unit 21 (core block 110) is lowered, the guide units 30a and 30b are also lowered (see FIG. 6C ) while maintaining the separation between the end units 1121 and 1122 of the cylindrical body 111. As a result, the core block 110 is inserted into the through-hole 201 of the coil 200.

[0050] When the end of the core block 110 opposite the overlapping portion 112 comes into contact with the upper end surface of the coil 200, the insertion of the coil 200 in the core block 110 into the through-hole 201 is completed, and the control unit 40 stops the lowering of the gripping unit 21. Thereafter, the control unit 40 drives the servo motor to rotate the round rods 341a and 341b, thereby further lowering the guide portions 30a and 30b and releasing the hold on the inner end portion 1121 and the outer end portion 1122.

[0051] At this time, the control unit 40 first releases the hold on the inner end portion 1121. That is, when the insertion of the coil 200 of the iron core block 110 into the through-hole 201 is completed, the control unit 40 first rotates the round bar 341a to lower the guide portion 30a and separate the guide portion 30a from the inner end portion 1121 (see FIG. 7D).

[0052] When the holding of guide portion 30a is released in this manner, a restoring force that tries to return inner end portion 1121 to its original shape is applied to inner end portion 1121 (see FIG. 7E). Note that, to facilitate the restoration of inner end portion 1121, as shown in FIG. 7E, control portion 40 may rotate round bar 341a to raise guide portion 30a toward the inside of coil 200, thereby pressing the outer peripheral surface of core block 110 related to inner end portion 1121 toward the inner peripheral surface of coil 200 (see dashed arrow in FIG. 7E).

[0053] At this time, the control unit 40 rotates the round bar 341b to lower the guide portion 30b, moving the guide portion 30b away from the outer end portion 1122 and releasing the hold of the guide portion 30b (see FIG. 7E).

[0054] When the holding of guide portion 30b is released in this manner, a restoring force is applied to outer end portion 1122 to return it to its original shape (see FIG. 7F). Note that, to facilitate the restoration of outer end portion 1122, as shown in FIG. 7F, control unit 40 may rotate round bar 341b to raise guide portion 30b toward the inside of coil 200 and press the outer peripheral surface of core block 110 related to outer end portion 1122 toward the inner peripheral surface of coil 200.

[0055] When the insertion of coil 200 into through-hole 201 of core block 110 relating to the innermost (first) of wound core 100 is completed in this manner, the steps shown in Figures 6A to 7F are then similarly performed on core block 110, the second innermost core block 110. At this time, handles 31a and 31b are appropriately operated by control unit 40 in accordance with the expansion of the diameter of core block 110, and holding portions 33a and 33b are appropriately moved left and right in directions separating them from each other. This process is repeated for all the core blocks 110 that make up the wound core 100, and this completes the process of assembling the wound core 100 into the coil 200.

[0056] As described above, the transformer assembly device 1 of this embodiment can automate the process of assembling the wound core 100 into the coil 200 by lowering each core block 110 using the gripping portion 21 (moving mechanism 20) and guiding the insertion of the core block 110 into the inside of the coil 200 using the guide portion 30a and the guide portion 30b (upper moving mechanism 34a and the upper moving mechanism 34b).

[0057] Furthermore, the transformer assembly apparatus 1 according to this embodiment uses the guide portions 30a and 30b for such automation, and therefore the configuration of the apparatus can be simplified and the operation of the apparatus can be simplified.

[0058] Furthermore, in the transformer assembly apparatus 1 according to this embodiment, the guide portions 30a and 30b have a rectangular plate shape extending in the vertical direction. Therefore, the space occupied by the guide portions 30a and 30b within the through hole 201 of the coil 200 is small, and the steps of Figures 6A to 7F can be easily performed for all of the core blocks 110 of the wound core 100, i.e., for the outermost core block 110 of the wound core 100.

[0059] Furthermore, in the transformer assembly apparatus 1 of this embodiment, when the gripping portion 21 (iron core block 110) is lowered, the guide portions 30a and 30b also descend while maintaining the separation between the two end portions 1121, 1122 of the cylindrical body 111, making it easier to insert the coil 200 of the iron core block 110 into the through hole 201.

[0060] Then, in the transformer assembly apparatus 1 according to this embodiment, as described above, when insertion of the coil 200 of the core block 110 into the through hole 201 is completed, the control unit 40 first moves the guide portion 30a, which has been holding the inner end portion 1121, away from the inner end portion 1121, and then moves the guide portion 30b, which has been holding the outer end portion 1121, away from the outer end portion 1122. This makes it possible to easily return both ends 1121, 1122 of the core block 110 to the same overlapping state as before separation from the wound core 100.

[0061] In the above, an example has been described in which the control unit 40 rotates the handles 31a and 31b to move the holding units 33a and 33b left and right along the guide rail 32, but the present invention is not limited to this. For example, the operator may operate the handle 31a as appropriate to move the holding unit 33a left and right along the guide rail 32, and the operator may operate the handle 31b as appropriate to move the holding unit 33b left and right along the guide rail 32.

[0062] In the above description, the guide portions 30a and 30b are described as having a rectangular plate shape extending in the vertical direction, but the present invention is not limited to this and may be, for example, rod-shaped. Further, recesses for positioning both ends 1121 and 1122 of the core block 110 may be provided at the tip ends of the guide portions 30a and 30b.

[0063] The technical features (constituent elements) described in this embodiment can be combined with each other, and by combining them, new technical features can be conceived. The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the claims, not by the above meaning, and is intended to include all modifications within the meaning and scope of the claims.

[0064] The matters described in the embodiments can be combined with each other. Furthermore, the independent claims and dependent claims described in the claims can be combined with each other in any and all combinations, regardless of the reference format. Furthermore, while the claims use a format in which a claim references two or more other claims (multiple claim format), this is not limited to this format. A multiple claim (multi-multi claim) that references at least one other multiple claim may also be used. [Explanation of symbols]

[0065] 1: transformer assembly device, 20: moving mechanism, 21: gripping portion (holding member), 30: guide member, 30a: guide portion, 30b: guide portion, 40: control portion, 100: wound core (iron core), 110: core block, 111: cylindrical body, 112: overlapping portion, 200: coil, 300: transformer, 1121: inner end portion, 1122: outer end portion

Claims

1. A transformer assembling device for assembling a transformer in which an iron core, in which a plurality of cylindrical bodies each having both ends overlapping in the circumferential direction and overlapping in the radial direction, is inserted into a pair of adjacent coils, A transformer assembling device comprising a guide member that moves inside each coil and guides the insertion of the iron core into the coil.

2. The guide member has two guide portions that are inserted into and removed from each coil, 2. The transformer assembling device according to claim 1, wherein the two guide portions hold both ends of each cylindrical body of the core spaced apart from each other before the core is inserted into the coil.

3. Each guide portion has a rectangular plate shape extending in the axial direction of the coil, 3. The transformer assembling device according to claim 2, wherein the two guide portions are arranged opposite to each other.

4. a holding member that holds a predetermined number of cylindrical bodies and moves down from above the pair of coils to insert the bodies into the coils; 3. The transformer assembling device according to claim 2, wherein the holding member is lowered with the two guide portions holding both ends of the cylindrical body apart from each other.

5. a control unit that, when the insertion of the unit number of cylindrical bodies into the coil is completed, lowers the two guide units to separate them from the unit number of cylindrical bodies; In the unit number of cylindrical bodies, the overlapping portions at both ends of each cylindrical body are offset in one direction in the circumferential direction, The inner end of each cylindrical body is held by one guide portion, and the outer end of each cylindrical body is held by the other guide portion.

5. The transformer assembling device according to claim 4, wherein the control unit causes the one guide portion to move away from the unit number of cylindrical bodies before the other guide portion moves away from the unit number of cylindrical bodies.

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