An auxiliary device for press-fitting silicon steel cores

Abstract

The present invention relates to an auxiliary device for press-fitting a silicon steel core, which includes a chassis and a positioning device arranged in the middle of the chassis. Stacking mechanisms are symmetrically arranged on both sides of the positioning device; the positioning device includes a lower positioning block fixed on the chassis and an upper positioning block that can be lifted and lowered above the lower positioning block. The transformer winding located in the middle of the two is positioned by the lower positioning block and the upper positioning block; the stacking mechanism includes a bottom plate horizontally fixed above the chassis and a support plate arranged above the bottom plate. A first material receiving frame and a second material receiving frame are arranged above the support plate. The first material receiving frame is located outside the second material receiving frame. The first material receiving frame and the second material receiving frame communicate up and down. An L-shaped first bracket is arranged at the bottom of the first material receiving frame, and an L-shaped second bracket is arranged at the bottom of the second material receiving frame. The auxiliary device for press-fitting the silicon steel core uses machinery to replace manual labor for press-fitting silicon steel sheets, with high press-fitting efficiency and ensuring the safety of the staff.

Description

Technical Field

[0001] The invention relates to the technical field of transformer iron core assembly, in particular to auxiliary equipment for pressing and assembling a silicon steel iron core. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil and iron core (magnetic core). Its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. The transformer core is the main magnetic circuit part of the transformer. It is usually made of hot-rolled or cold-rolled silicon steel sheets with a high silicon content and coated with insulating paint.

[0003] For EI type transformers, currently, silicon steel sheets are assembled by manual stacking. First, the silicon steel core is staggered and inserted from the left and right ends of the transformer winding. When the silicon steel sheet fills the transformer winding, it is shaped with a hammer and the pressing is completed. The pressing efficiency is low, and the edges of the silicon steel sheet are relatively sharp. Manual pressing can easily cause injuries, resulting in poor pressing safety. Therefore, it is necessary to provide an auxiliary device for pressing silicon steel cores, which can replace manual pressing of silicon steel sheets with machinery to improve the pressing efficiency and ensure the safety of workers. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an auxiliary device for pressing silicon steel core, which replaces manual work for pressing silicon steel sheets by machinery, improves the pressing efficiency and ensures the safety of workers.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] An auxiliary device for pressing a silicon steel core, comprising a base frame and a positioning device arranged in the middle of the base frame, wherein stacking mechanisms are symmetrically arranged on both sides of the positioning device; the positioning device comprises a lower positioning block fixed on the base frame and an upper positioning block which can be lifted and lowered above the lower positioning block, and the transformer winding located in the middle of the lower positioning block and the upper positioning block are positioned by the lower positioning block and the upper positioning block;

[0007] The stacking mechanism comprises a bottom plate horizontally fixed above the bottom frame and a support plate arranged above the bottom plate, a first material holding frame and a second material holding frame are arranged above the support plate, the first material holding frame is located outside the second material holding frame, the first material holding frame and the second material holding frame are connected vertically, a first L-shaped bracket is arranged at the bottom of the first material holding frame, and a second L-shaped bracket is arranged at the bottom of the second material holding frame;

[0008] On both sides of the inner end of the support plate, there are limiting plates corresponding to the two ends of the silicon steel sheet, and the bottom surface of the limiting plate is inclined with the outer side higher and the inner side lower; at the inner end of the support plate, there is an upwardly warped arc portion, and the arc portion is connected to the bottom edge of the through hole of the transformer winding provided on the positioning device;

[0009] On the support plate, along the front-rear direction, several limiting blocks are arranged on the left side of the limiting plate. The inner side of the limiting block is a vertical surface, and the outer side is a slope with the outer side lower and the inner side higher; the distance between the limiting block and the right end of the support plate is greater than the width of the E-shaped silicon steel sheet;

[0010] Above the support plate, there are at least two pushing plates. The pushing plates move left and right along the length direction of the support plate under the action of the driving device. At the inner end of the pushing plate, a pushing block is fixedly provided. The inner side of the pushing block is a vertical surface, and the outer side is a slope with the outer side lower and the inner side higher. At the upper part of the outer end of the pushing plate, a blanking block is fixedly provided. The inner side of the blanking block is a vertical surface, and the outer side is a slope with the outer side lower and the inner side higher.

[0011] As an embodiment of the present invention, the vertical portion of the first bracket is fixedly connected to the bottom of the outer end of the first material storage frame, so that the E-shaped silicon steel sheet placed above the first bracket can be separated from the first bracket under the action of the blanking block; the vertical portion of the second bracket is fixedly connected to the bottom of the outer end of the second material storage frame, so that the I-shaped silicon steel sheet placed on the second bracket can be separated from the second bracket under the action of the pushing block.

[0012] As an embodiment of the present invention, the upper surface of the horizontal portion of the first bracket is lower than the lower surface of the horizontal portion of the second bracket by at least the thickness of one E-shaped silicon steel sheet or I-shaped silicon steel sheet, so that the E-shaped silicon steel sheet on the first bracket can pass through below the second bracket under the action of the blanking block.

[0013] As an embodiment of the present invention, the distance between the upper surface of the horizontal portion of the first bracket and the bottom surface of the first material storage frame is exactly the thickness of one E-shaped silicon steel sheet, and the top of the blanking block is adapted to the height of the bottom surface of the first material storage frame; the distance between the upper surface of the horizontal portion of the second bracket and the bottom surface of the second material storage frame is exactly the thickness of one I-shaped silicon steel sheet, and the top of the pushing block is adapted to the height of the bottom surface of the second material storage frame.

[0014] As an embodiment of the present invention, both the first bracket and the second bracket are composed of a plurality of L-shaped support rods arranged side by side in the front-rear direction, and the pushing plate is located between adjacent support rods.

[0015] As an embodiment of the present invention, first partition grooves are arranged on both sides of the support plate along its length direction, and two pushing plates are provided, which are respectively fixed at two first partition grooves; the driving device includes a first rodless cylinder and a second rodless cylinder arranged on the top of the bottom plate, the first rodless cylinder and the second rodless cylinder are respectively located on both sides of the pushing plate at the first partition groove, wherein the first rodless cylinder is located outside the second rodless cylinder, and the sliders of the first rodless cylinder and the second rodless cylinder are fixedly connected to the outer end and the inner end of the pushing plate through a connecting plate respectively.

[0016] As an embodiment of the present invention, the positioning device further includes a limiting frame with an open bottom end, the upper positioning block is located inside the limiting frame and is fixed at the top of the limiting frame through a connecting column, and the top of the limiting frame is connected to the frame through a lifting rod; sleeves are vertically fixed at the four corners of the top of the limiting frame, springs are arranged inside the sleeves, and the lower ends of the sleeves are provided with pressing rods that can move up and down in a clamped manner; square positioning grooves for positioning the transformer winding are provided on the opposite surfaces of the lower positioning block and the upper positioning block, a second chamfer is arranged at the edge of the positioning groove, and a first chamfer is arranged at the open bottom end of the limiting frame.

[0017] As an embodiment of the present invention, baffles are arranged on the support plate outside the limiting plate, and the distance between the two baffles is adapted to the length of the E-shaped silicon steel sheet or the I-shaped silicon steel sheet.

[0018] As an embodiment of the present invention, a second partition groove is arranged in the middle of the support plate along its length direction, two third rodless cylinders are arranged on the top of the bottom plate along the length direction at the second partition groove, the sliders of the two third rodless cylinders are fixedly connected to the mounting plate arranged above them, two hammering devices are arranged on the mounting plate along the length direction of the third rodless cylinder, hammer heads are arranged inside the hammering devices, the outer shape of the hammer heads is the same as that of the pushing blocks, the inner side is a vertical surface, and the outer side is a slope with a lower outer side and a higher inner side; the hammering devices adopt pneumatic air hammers or pneumatic vibrators; when the pushing plate and the mounting plate are both located at the outermost side, the pushing block is flush with the end of the hammer head.

[0019] As an implementation manner of the present invention, a plurality of first telescopic cylinders are vertically and fixedly arranged at the bottom outside of the first material storage frame. The first cylinder rod of the first telescopic cylinder is arranged downward, and a first supporting block located directly below the first material storage frame is fixedly arranged at the free end of the first cylinder rod; a plurality of second telescopic cylinders are vertically and fixedly arranged at the bottom outside of the second material storage frame. The second cylinder rod of the second telescopic cylinder is arranged downward, and a second supporting block located directly below the second material storage frame is fixedly arranged at the free end of the second cylinder rod; the first supporting block is located between adjacent L-shaped supporting rods and can lift the lowermost E-shaped silicon steel sheet in the first material storage frame to a height higher than that of the blanking block. The second supporting block is located between adjacent L-shaped supporting rods and can lift the lowermost I-shaped silicon steel sheet in the second material storage frame to a height higher than that of the pushing block;

[0020] Above the chassis, hammer pads are arranged on both sides of the positioning device. A third chamfer is arranged at the inner edge of the upper end of the hammer pad, and the hammer pad is supported by a support rod below.

[0021] The beneficial effects produced by adopting the above technical solutions are as follows:

[0022] The auxiliary equipment for pressing silicon steel cores provided by the present invention first positions the transformer winding through the positioning device, and then stacks silicon steel sheets on the transformer winding alternately through the stacking mechanisms arranged on both sides of the positioning device. The mechanical method is used to replace manual pressing of silicon steel sheets, greatly improving the pressing efficiency of silicon steel sheets and ensuring the safety of staff.

[0023] When pressing the silicon steel sheets, the silicon steel sheets are pressed from bottom to top by means of the arc-shaped part at the inner end of the support plate. By arranging the first material storage frame and the first support frame, the lowermost E-shaped silicon steel sheet on the first support frame can be pushed to the right side of the limit stop on the support plate under the action of the blanking block; by arranging the second material storage frame and the second support frame, the lowermost I-shaped silicon steel sheet on the second support frame can be pushed to the upper side of the E-shaped silicon steel sheet on the right side of the limit stop under the action of the pushing block and the limit stop, and the E-shaped silicon steel sheet and the I-shaped silicon steel sheet are pushed to the transformer winding together for pressing operation. At the same time, the blanking block pushes the next E-shaped silicon steel sheet to the right side of the limit stop; after the E-shaped silicon steel sheet and the I-shaped silicon steel sheet are pressed in place, the push plate moves outward to return to its original position. Since the inner side of the limit stop is a vertical surface and the outer side is a slope with a lower outer and higher inner height, the E-shaped silicon steel sheet on its right side is restricted on its right side. Since the inner sides of the pushing block and the blanking block are vertical surfaces and the outer sides are slopes with a lower outer and higher inner height, when they pass under the first support frame and the second support frame during the process of returning to their original positions, they will lift the upper E-shaped silicon steel sheet and I-shaped silicon steel sheet to prevent interference.

[0024] The distance between the innermost end of the limiting plate and the support plate is the thickness of two silicon steel sheets. By setting the baffle and the limiting plate to guide and limit the silicon steel sheets, and cooperating with the arc portion, the silicon steel sheets can be stably pressed onto the transformer winding from the lowermost position of the through hole.

[0025] When the silicon steel sheets are almost completely pressed, in order to expel the gaps between the silicon steel sheets and ensure the tightness of the pressed silicon steel sheets, the last layer of silicon steel sheets needs to be pressed by hammering. In the present invention, by setting the third rodless cylinder and the hammering device, while the pressing is carried out by the pushing block, the third rodless cylinder moves synchronously with the first rodless cylinder and the second rodless cylinder, and the silicon steel sheets are hammered by the hammering device, so as to realize the pressing of the last layer of silicon steel sheets. Since the last layer of silicon steel sheets requires two stacking mechanisms to press one E-shaped silicon steel sheet and one I-shaped silicon steel sheet respectively, by setting the first supporting block and the second supporting block, the E-shaped silicon steel sheet or the I-shaped silicon steel sheet can be specifically lifted, and only the required E-shaped silicon steel sheet or I-shaped silicon steel sheet is conveyed to the right side of the limiting block for the pressing of the last layer of silicon steel sheets. At the same time, in order to prevent the transformer winding from vibrating greatly during the hammering process and protect the positioning device from damage, a large-mass hammer pad is respectively arranged on both sides of the positioning device. Its structural design is ingenious and practical, reducing the labor intensity of the staff.

[0026] In the positioning device, by setting the limiting frame, the pressed silicon steel sheets can be automatically arranged to ensure the neat arrangement of the silicon steel sheets; by setting the sleeve, the spring and the pressing rod, as the pressing progresses, the pressed silicon steel sheets will be pressed tighter and tighter, and the air between the silicon steel sheets is exhausted during the pressing process, reducing the gap between the silicon steel sheets. Brief Description of the Drawings

[0027] Figure 1 is the structural schematic diagram of the present invention.

[0028] Figure 2 is Figure 1 the partial enlarged schematic diagram at A in

[0029] Figure 3 is the structural schematic diagram of another angle of the present invention.

[0030] Figure 4 is the front view structural schematic diagram of the present invention.

[0031] Figure 5 is the structural schematic diagram of another angle of the present invention.

[0032] Figure 6 is the structural schematic diagram of the positioning device in the present invention.

[0033] Figure 7 is the structural schematic diagram of the chassis and the stacking mechanism in the present invention.

[0034] Figure 8 is Figure 7 The partial enlarged schematic view at position B in

[0035] Figure 9 is Figure 7 The partial enlarged schematic view at position C in

[0036] Figure 10 It is the schematic view of another angle structure of the chassis and stacking mechanism in the present invention.

[0037] Figure 11 It is the schematic view of yet another angle structure of the chassis and stacking mechanism in the present invention.

[0038] Figure 12 is Figure 11 The partial enlarged schematic view at position D in

[0039] Figure 13 It is the schematic view of the structure of the first material storage frame and the second material storage frame in the present invention.

[0040] Figure 14 It is the schematic view of the structure of the transformer winding in the present invention.

[0041] Figure 15 It is the schematic view of the structure of the chassis, stacking mechanism and partially press-fitted silicon steel sheets in the present invention.

[0042] Wherein: 1, transformer winding; 2, through hole; 3, E-shaped silicon steel sheet; 4, I-shaped silicon steel sheet; 5, chassis; 6, lower positioning block, 8, limit frame; 801, first chamfer; 9, upper positioning block; 901, second chamfer; 10, connecting column; 11, sleeve; 12, pressure rod; 13, lifting rod; 14, frame; 15, hammer pad; 1501, third chamfer; 16, support rod; 17, bottom plate; 18, support plate; 1801, first partition groove, 1802, second partition groove; 19, limit plate; 20, limit stop block; 21, pushing plate; 22, first rodless cylinder; 23, second rodless cylinder; 24, connecting plate; 25, pushing block; 26, blanking block; 27, third rodless cylinder; 28, mounting plate; 29, hammering device; 30, hammer head; 31, first material storage frame, 32, first bracket, 33, first telescopic cylinder; 34, first cylinder rod; 35, first supporting block; 36, second material storage frame; 37, second bracket; 38, second telescopic cylinder; 39, second cylinder rod; 40, second supporting block; 41, arc part; 42, baffle; 43, column; 44, leg; 45, supporting block. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be clearly and completely described below in conjunction with specific embodiments.

[0044] As Figures 1-4 , Figure 7 , Figure 8 , Figure 10 , Figures 13-15 shown, an auxiliary device for press-fitting a silicon steel core, which includes a chassis 5 and a positioning device disposed in the middle of the chassis 5. Stacking mechanisms are symmetrically arranged on both sides of the positioning device; the positioning device includes a lower positioning block 6 fixedly provided on the chassis 5 and an upper positioning block 9 that can be lifted and lowered above the lower positioning block 6. The transformer winding 1 located in the middle of the two is positioned by the lower positioning block 6 and the upper positioning block 9;

[0045] The stacking mechanism includes a bottom plate 17 horizontally fixed above the chassis 5 and a support plate 18 disposed above the bottom plate 17. A first material storage frame 31 and a second material storage frame 36 are provided above the support plate 18. The first material storage frame 31 is located outside the second material storage frame 36. The first material storage frame 31 and the second material storage frame 35 communicate up and down. An L-shaped first bracket 32 is provided at the bottom of the first material storage frame 31, and an L-shaped second bracket 37 is provided at the bottom of the second material storage frame 35;

[0046] Limiting plates 19 corresponding to both ends of the silicon steel sheet are provided on both sides of the inner end of the support plate 18. Both ends of the silicon steel sheet are located directly below the limiting plates 19. The bottom surface of the limiting plates 19 is inclined with the outer side being high and the inner side being low (refer to Figure 8 , with the left side of the bottom surface being high and the right side being low); an arc-shaped portion 41 that tilts upward is provided at the inner end of the support plate 18. The arc-shaped portion 41 is connected to the bottom edge of the through hole 2 of the transformer winding 1 provided on the positioning device;

[0047] A number of limiting blocks 20 are provided on the support plate 18 along the front and back direction of the support plate 18 on the left side of the limiting plates 19. The inner side of the limiting blocks 20 is a vertical surface, and the outer side is a slope with the outer side being low and the inner side being high; the distance between the limiting blocks 20 and the right end of the support plate 18 is greater than the width of the E-shaped silicon steel sheet 3 ( Figure 1 The left and right direction in

[0048] is the width direction of the E-shaped silicon steel sheet 3);

[0049] The auxiliary equipment for press-fitting silicon steel cores provided by the present invention first positions the transformer winding 1 through a positioning device, and then stacks silicon steel sheets on the transformer winding 1 alternately through stacking mechanisms arranged on both sides of the positioning device. The mechanical replacement of manual press-fitting of silicon steel sheets greatly improves the press-fitting efficiency of silicon steel sheets and ensures the safety of staff.

[0050] When press-fitting silicon steel sheets, the arc-shaped part 41 at the inner end of the support plate 18 is used to press-fit the silicon steel sheets from bottom to top in sequence. By setting the first material storage frame 31 and the first bracket 32, the E-shaped silicon steel sheet 3 at the bottom of the first bracket 32 can be pushed to the right side of the limit stop 20 on the support plate 18 under the action of the blanking block 26; by setting the second material storage frame 36 and the second bracket 37, under the action of the pushing block 25 and the limit stop 20, the I-shaped silicon steel sheet 4 at the bottom of the second bracket 37 can be pushed above the E-shaped silicon steel sheet 3 on the right side of the limit stop 20, and the E-shaped silicon steel sheet 3 and the I-shaped silicon steel sheet 4 are pushed together to the transformer winding 1 for press-fitting operations. At the same time, the blanking block 26 pushes the next E-shaped silicon steel sheet 3 to the right side of the limit stop 20; after the E-shaped silicon steel sheet 3 and the I-shaped silicon steel sheet 4 are press-fitted in place, the push plate 21 moves outwards to return to its original position. Since the inner side of the limit stop 20 is a vertical surface and the outer side is a slope with a lower outer part and a higher inner part, the E-shaped silicon steel sheet 3 on its right side is restricted on its right side. Since the inner sides of the pushing block 25 and the blanking block 26 are vertical surfaces and the outer sides are slopes with a lower outer part and a higher inner part, when they pass under the first bracket 32 and the second bracket 37 during the process of returning to their original positions, they will lift the upper E-shaped silicon steel sheet 3 and I-shaped silicon steel sheet 4 to prevent interference.

[0051] The distance between the innermost end of the limit plate 19 and the support plate 18 is the thickness of two silicon steel sheets. By setting the baffle 42 and the limit plate 19 to guide and limit the silicon steel sheets, and cooperating with the arc-shaped part 41, the silicon steel sheets can be stably press-fitted on the transformer winding 1 from the lowermost position of the through hole 2.

[0052] As Figure 4 and Figure 13 shown, the vertical part of the first bracket 32 is fixedly connected to the bottom of the outer end of the first material storage frame 31, so that the E-shaped silicon steel sheet 3 placed above the first bracket 32 can be separated from the first bracket 32 under the action of the blanking block 26; the vertical part of the second bracket 37 is fixedly connected to the bottom of the outer end of the second material storage frame 35, so that the I-shaped silicon steel sheet 4 placed on the second bracket 37 can be separated from the second bracket 37 under the action of the pushing block 25.

[0053] The upper surface of the horizontal portion of the first bracket 32 is lower than the lower surface of the horizontal portion of the second bracket 37 by at least the thickness of one E-shaped silicon steel sheet 3 or I-shaped silicon steel sheet 4. In this embodiment, it is the thickness of one E-shaped silicon steel sheet 3, so that the E-shaped silicon steel sheet 3 on the first bracket 32 can pass through below the second bracket 37 under the action of the blanking block 26.

[0054] The distance between the upper surface of the horizontal portion of the first bracket 32 and the bottom surface of the first material storage frame 31 is exactly the thickness of one E-shaped silicon steel sheet 3. The top of the blanking block 26 is adapted to the height of the bottom surface of the first material storage frame 31, so that the blanking block 26 can push away the lowermost E-shaped silicon steel sheet 3 on the first bracket 32; the distance between the upper surface of the horizontal portion of the second bracket 37 and the bottom surface of the second material storage frame 36 is exactly the thickness of one I-shaped silicon steel sheet 4. The top of the pusher block 25 is adapted to the height of the bottom surface of the second material storage frame 36, so that the pusher block 25 can push away the lowermost I-shaped silicon steel sheet 4 on the second bracket 37. The top of the blanking block 26 is lower than the upper surface of the second bracket 37, so that when the blanking block 26 passes below the second bracket 37, it does not contact the I-shaped silicon steel sheet 3 on the second bracket 37.

[0055] As Figure 5 、 Figure 10 and Figure 13 shown, both the first bracket 32 and the second bracket 37 are composed of a plurality of L-shaped support rods arranged side by side in the front-rear direction. The push plate 21 is located between adjacent support rods, so that the pusher block 25 and the blanking block 26 on the push plate 21 can smoothly push away the E-shaped silicon steel sheet 3 and the I-shaped silicon steel sheet 4 from the first bracket 32 and the second bracket 37 without interference.

[0056] As Figures 1-3 、 Figure 11 shown, first partition grooves 1801 are arranged along the length direction on both sides of the support plate 18. Two push plates 21 are provided and are respectively fixed at two first partition grooves 1801; the driving device includes a first rodless cylinder 22 and a second rodless cylinder 23 arranged on the top of the bottom plate 17. The first rodless cylinder 22 and the second rodless cylinder 23 are respectively located on both sides of the push plate 21 at the first partition groove 1801, wherein the first rodless cylinder 22 is located outside the second rodless cylinder 23. The sliders of the first rodless cylinder 22 and the second rodless cylinder 23 are respectively fixedly connected to the outer end and the inner end of the push plate 21 through a connecting plate 24.

[0057] As Figure 6As shown, the positioning device further includes a limiting frame 8 with an open lower end. The upper positioning block 9 is located inside the limiting frame 8 and is fixedly arranged at the top of the limiting frame 8 through a connecting column 10. The top of the limiting frame 8 is connected to the frame 14 through a lifting rod 13, and the lifting rod 13 is a cylinder rod or an electric screw rod. At the four corners of the top of the limiting frame 8, sleeves 11 are vertically fixed. Springs are arranged inside the sleeves 11, and a pressure rod 12 is clamped in the lower end of the sleeve 11 in a vertically movable manner. Opposite surfaces of the lower positioning block 6 and the upper positioning block 9 are provided with square positioning grooves for positioning the transformer winding 1. A second chamfer 901 is arranged at the edge of the positioning groove, and a first chamfer 801 is arranged at the open lower end of the limiting frame 8. By providing the first chamfer 801, it is convenient to neatly arrange the pressed silicon steel sheets, and by providing the second chamfer 901, it is convenient to position the transformer winding 1.

[0058] In the positioning device, by providing the limiting frame 8, the pressed silicon steel sheets can be automatically arranged to ensure that the silicon steel sheets are neatly arranged. By providing the sleeves 11, springs and pressure rods 12, as the pressing progresses, the pressed silicon steel sheets will be pressed tighter and tighter, and air is exhausted between the silicon steel sheets during the pressing process, reducing the gap between the silicon steel sheets.

[0059] On the support plate 18, baffles 42 are arranged outside the limiting plate 19. The distance between the two baffles 42 is adapted to the length of the E-shaped silicon steel sheet 3 or the I-shaped silicon steel sheet 4 (the length direction of the silicon steel sheet is the front-rear direction of the support plate 18).

[0060] As Figures 1-3 、 Figure 11 and Figure 12 shown, a second partition groove 1802 is arranged in the middle of the support plate 18 along its length direction. On the top of the bottom plate 17 at the second partition groove 1802, two third rodless cylinders 27 are arranged along the length direction. The sliding blocks of the two third rodless cylinders 27 are fixedly connected to a mounting plate 28 arranged above them. Two hammering devices 29 are arranged on the mounting plate 28 along the length direction of the third rodless cylinder 27. A hammer head 30 is arranged inside the hammering device 29. The outer shape of the hammer head 30 is the same as that of the pushing block 25, with a vertical surface on the inner side and a slope with a lower outer side and a higher inner side on the outer side. The hammering device 29 uses a pneumatic air hammer or a pneumatic vibrator. When the pushing plate 21 and the mounting plate 28 are both located at the outermost side, the pushing block 25 and the end of the hammer head 30 are flush with each other.

[0061] As Figure 1 、 Figure 2 、 Figure 7 、 Figure 9 and Figure 13As shown, several first telescopic cylinders 33 are vertically and fixedly arranged at the outer bottom of the first material storage frame 31. The first cylinder rod 34 of the first telescopic cylinder 33 is arranged downward. A first support block 35 located directly below the first material storage frame 31 is fixedly arranged at the free end of the first cylinder rod 34. Several second telescopic cylinders 38 are vertically and fixedly arranged at the outer bottom of the second material storage frame 36. The second cylinder rod 39 of the second telescopic cylinder 38 is arranged downward. A second support block 40 located directly below the second material storage frame 36 is fixedly arranged at the free end of the second cylinder rod 39. The first support block 35 is located between adjacent L-shaped support rods and can lift the lowermost E-shaped silicon steel sheet 3 in the first material storage frame 31 to a height higher than that of the blanking block 26. The second support block 40 is located between adjacent L-shaped support rods and can lift the lowermost I-shaped silicon steel sheet 4 in the second material storage frame 36 to a height higher than that of the pushing block 25.

[0062] Hammer pads 15 are arranged on both sides of the positioning device above the chassis 5. A third chamfer 1501 is arranged at the inner edge of the upper end of the hammer pad 15, which plays a guiding role when the limit frame 8 moves downward. The hammer pad 15 is supported by a support rod 16 below. As a further optimization, the support rod 16 is a hydraulic lifting rod.

[0063] When the silicon steel sheets are pressed to the last layer, in order to discharge the gaps between the silicon steel sheets and ensure the tightness of the pressing of the silicon steel sheets, the last layer of silicon steel sheets needs to be pressed by means of hammering. As a further optimization, the present invention realizes the pressing of the last layer of silicon steel sheets by setting a third rodless cylinder 27 and a hammering device 29. While the pushing block 25 is used for pressing, the third rodless cylinder 27 moves synchronously with the first rodless cylinder 22 and the second rodless cylinder 23, and the silicon steel sheets are hammered by the hammering device 29. Since the last layer of silicon steel sheets requires two stacking mechanisms to press an E-shaped silicon steel sheet 3 and an I-shaped silicon steel sheet 4 respectively, the first support block 35 and the second support block 40 can be used to specifically lift the E-shaped silicon steel sheet 3 or the I-shaped silicon steel sheet 4, and only the required E-shaped silicon steel sheet 3 or I-shaped silicon steel sheet 4 is conveyed to the right side of the limit stop 20 for the pressing of the last layer of silicon steel sheets. At the same time, in order to prevent the transformer winding 1 from vibrating greatly during the hammering process and protect the positioning device from being damaged, a large-mass hammer pad 15 is respectively arranged on both sides of the positioning device. Its structural design is ingenious and practical, and reduces the labor intensity of the staff.

[0064] In this embodiment, in order to ensure the distance between the second bracket 37 and the upper surface of the support plate 18, the second bracket 37 is arranged on the support plate 18 through a plurality of support blocks 45. The support plate 18 is arranged on the chassis 5 through a plurality of columns 43. A plurality of legs 44 are arranged at the bottom of the chassis 5.

[0065] Specific working process:

[0066] First, place the transformer winding 1 in the positioning groove of the lower positioning block 6. Then, control the limiting frame 8 to move downward through the lifting rod 13, position and press the top of the transformer winding 1 through the upper positioning block 9. Then, stack silicon steel sheets on the transformer winding 1 alternately through the stacking mechanisms arranged on both sides of the positioning device. That is, after pressing an E-shaped silicon steel sheet 3 and an I-shaped silicon steel sheet 4 located above it through the stacking mechanism on the left side, then press an E-shaped silicon steel sheet 3 and an I-shaped silicon steel sheet 4 located above it through the stacking mechanism on the right side. The two sides are stacked alternately. The E-shaped silicon steel sheet 3 and the I-shaped silicon steel sheet 4 in each layer of silicon steel sheets are combined into a Japanese-shaped silicon steel sheet.

[0067] When pressing the silicon steel sheets through the stacking mechanism, drive the pushing plate 21 to move towards the positioning device through the first rodless cylinder 22 and the second rodless cylinder 23. During the movement, under the action of the slopes of the pushing block 25 and the limiting block 20, the I-shaped silicon steel sheet 4 at the bottom of the second bracket 37 can be pushed above the E-shaped silicon steel sheet 3 on the right side of the limiting block 20, and the E-shaped silicon steel sheet 3 and the I-shaped silicon steel sheet 4 are pushed to the transformer winding 1 together for the pressing operation. At the same time, the blanking block 26 pushes the E-shaped silicon steel sheet 3 at the bottom of the first bracket 32 to the right side of the limiting block 20;

[0068] After the E-shaped silicon steel sheet 3 and the I-shaped silicon steel sheet 4 are pressed in place, the pushing plate 21 moves outwards to return to its original position. Since the inner side of the limiting block 20 is a vertical surface and the outer side is a slope with a lower outer and higher inner height, the E-shaped silicon steel sheet 3 on its right side is restricted on its right side. Since the inner sides of the pushing block 25 and the blanking block 26 are vertical surfaces and the outer sides are slopes with a lower outer and higher inner height, when passing under the first bracket 32 and the second bracket 37 during their return to the original position, they will lift the E-shaped silicon steel sheet 3 and the I-shaped silicon steel sheet 4 above to prevent interference; at the same time, the stacking mechanism on the other side of the positioning device performs the pressing operation of the silicon steel sheets on the other side;

[0069] Perform the pressing operation of multiple layers of silicon steel sheets in this way. As one layer of silicon steel sheets is pressed, the silicon steel sheets in its upper layer enter the limiting frame 8 along the first chamfer 801, realizing the automatic arrangement of the silicon steel sheets, and being pressed tightly under the action of the pressing rod 12;

[0070] When the silicon steel sheets are pressed to the last layer, in order to discharge the gaps between the silicon steel sheets and ensure the tightness of the pressing of the silicon steel sheets, while pressing through the pushing block 25, the third rodless cylinder 27 moves synchronously with the first rodless cylinder 22 and the second rodless cylinder 23, so that the inner end of the hammer head 30 is flush with the right end of the pushing block 26, and continuously hammer the silicon steel sheets through the hammering device 29 to realize the pressing of the last layer of silicon steel sheets.

[0071] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An auxiliary device for pressing a silicon steel core, characterized in that: It includes a base frame and a positioning device arranged in the middle of the base frame, and the positioning device is symmetrically provided with stacking mechanisms on both sides; the positioning device includes a lower positioning block fixed on the base frame and an upper positioning block which can be lifted and lowered above the lower positioning block, and the transformer winding located in the middle of the lower positioning block and the upper positioning block are positioned by the lower positioning block and the upper positioning block; The stacking mechanism comprises a bottom plate horizontally fixed above the bottom frame and a support plate arranged above the bottom plate, a first material holding frame and a second material holding frame are arranged above the support plate, the first material holding frame is located outside the second material holding frame, the first material holding frame and the second material holding frame are connected vertically, a first L-shaped bracket is arranged at the bottom of the first material holding frame, and a second L-shaped bracket is arranged at the bottom of the second material holding frame; The inner ends of the support plates are provided with limit plates corresponding to the two ends of the silicon steel sheets, and the bottom surfaces of the limit plates are inclined with the outer side higher and the inner side lower; the inner ends of the support plates are provided with an arc-shaped portion that is tilted upward, and the arc-shaped portion is connected with the bottom edge of the through hole of the transformer winding provided on the positioning device; The support plate is provided with a plurality of limit blocks on the left side of the limit plate along the front-to-back direction, the inner side of the limit block is a vertical surface, and the outer side is a slope surface with a low outer side and a high inner side; the distance between the limit block and the right end of the support plate is greater than the width of the E-shaped silicon steel sheet; At least two push plates are arranged above the support plate, and the push plates move left and right along the length direction of the support plate under the action of the driving device. A push block is fixedly arranged at the inner end of the push plate, and the inner side of the push block is a vertical surface, and the outer side is a slope surface with a lower outer side and a higher inner side. A lower block is fixedly arranged at the upper part of the outer end of the push plate, and the inner side of the lower block is a vertical surface, and the outer side is a slope surface with a lower outer side and a higher inner side. The first dividing grooves are arranged at both sides of the support plate along the length direction thereof, and the second dividing grooves are arranged at the middle part of the support plate along the length direction thereof.

2. The auxiliary equipment for pressing a silicon steel core according to claim 1, characterized in that: The vertical portion of the first bracket is fixedly connected to the bottom outer end of the first material holding frame, so that the E-type silicon steel sheet placed on the top of the first bracket can be separated from the first bracket under the action of the lower material block; the vertical portion of the second bracket is fixedly connected to the bottom outer end of the second material holding frame, so that the I-type silicon steel sheet placed on the second bracket can be separated from the second bracket under the action of the pusher block.

3. The auxiliary equipment for pressing a silicon steel core according to claim 2, characterized in that: The upper surface of the horizontal part of the first bracket is lower than the lower surface of the horizontal part of the second bracket by the thickness of at least one E-type silicon steel sheet or I-type silicon steel sheet, so that the E-type silicon steel sheet on the first bracket can pass from under the second bracket under the action of the blanking block.

4. The auxiliary equipment for pressing a silicon steel core according to claim 3, characterized in that: The distance between the upper surface of the horizontal part of the first bracket and the bottom surface of the first material holding frame is just the thickness of an E-type silicon steel sheet, and the top of the lower material block is height-matched with the bottom surface of the first material holding frame; the distance between the upper surface of the horizontal part of the second bracket and the bottom surface of the second material holding frame is just the thickness of an I-type silicon steel sheet, and the top of the pusher block is height-matched with the bottom surface of the second material holding frame.

5. The auxiliary equipment for press-fitting of silicon steel core according to claim 1, characterized in that: The first bracket and the second bracket are both composed of a plurality of L-shaped support rods arranged side by side in the front-to-back direction, and the push plate is located between adjacent support rods.

6. The auxiliary equipment for pressing a silicon steel core according to claim 1, characterized in that: The support plate is provided with first dividing grooves on both sides along its length direction, and two push plates are provided, which are respectively fixed at the two first dividing grooves; the driving device includes a first rodless cylinder and a second rodless cylinder arranged on the top of the base plate, and the first rodless cylinder and the second rodless cylinder are respectively located on both sides of the push plate at the first dividing groove, wherein the first rodless cylinder is located on the outside of the second rodless cylinder, and the sliding blocks of the first rodless cylinder and the second rodless cylinder are respectively fixed to the outer end and the inner end of the push plate through a connecting plate.

7. The auxiliary equipment for press-fitting of silicon steel core according to claim 1, characterized in that: The positioning device also includes a limit frame with an opening at the lower end, the upper positioning block is located inside the limit frame and is fixed to the top of the limit frame through a connecting column, and the top of the limit frame is connected to the frame through a lifting rod; sleeves are vertically fixed at the four corners of the top of the limit frame, a spring is arranged in the sleeve, and a pressure rod is arranged at the lower end of the sleeve so as to be movable up and down; square positioning grooves for positioning the transformer windings are provided on the opposite surfaces of the lower positioning block and the upper positioning block, a second chamfer is provided at the edge of the positioning groove, and a first chamfer is provided at the opening at the lower end of the limit frame.

8. The auxiliary equipment for press-fitting of silicon steel core according to claim 1, characterized in that: The support plate is provided with a baffle plate outside the limiting plate, and the distance between the two baffle plates is adapted to the length of the E-type silicon steel sheet or the I-type silicon steel sheet.

9. A silicon steel core press-fitting auxiliary device according to any one of claims 1 to 8, characterized in that: A second dividing groove is arranged in the middle of the support plate along its length direction, and two third rodless cylinders are arranged at the top of the bottom plate at the second dividing groove along the length direction. The sliding blocks of the two third rodless cylinders are fixedly connected with the mounting plate arranged above them, and two hammering devices are arranged on the mounting plate along the length direction of the third rodless cylinders. A hammer head is arranged on the inner side of the hammering device. The shape of the hammer head is the same as that of the pushing block, with a vertical surface on the inner side and a slope surface with a low outside and a high inside on the outer side. The hammering device adopts a pneumatic air hammer or a pneumatic vibrator. When the pushing plate and the mounting plate are located at the outermost sides at the same time, the ends of the pushing block and the hammer head are flush with each other.

10. The auxiliary equipment for press-fitting of silicon steel core according to claim 9, characterized in that: A plurality of first telescopic cylinders are vertically fixedly arranged at the bottom of the outer side of the first material holding frame, the first cylinder rod of the first telescopic cylinder is arranged downward, and a first supporting block located directly below the first material holding frame is fixedly arranged at the free end of the first cylinder rod; a plurality of second telescopic cylinders are vertically fixedly arranged at the bottom of the outer side of the second material holding frame, the second cylinder rod of the second telescopic cylinder is arranged downward, and a second supporting block located directly below the second material holding frame is fixedly arranged at the free end of the second cylinder rod; the first supporting block is located between adjacent L-shaped supporting rods, and can lift the lowest E-shaped silicon steel sheet in the first material holding frame to a height higher than the unloading block, and the second supporting block is located between adjacent L-shaped supporting rods, and can lift the lowest I-shaped silicon steel sheet in the second material holding frame to a height higher than the pushing block; Hammer pads are arranged on both sides of the positioning device above the base frame, a third chamfer is arranged at the inner edge of the upper end of the hammer pad, and the lower side of the hammer pad is supported by a support rod.

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