A heavy-duty ring workpiece centering mechanism and a heavy-duty coil demoulding machine

Abstract

The present invention proposes a centering mechanism for heavy-duty circular workpieces and a heavy-duty coil demolding machine. The centering mechanism includes a crane, a frame, four floating seats fixed to the frame, and four push columns installed on the frame via a displacement mechanism. The crane is located above the frame, and the four floating seats and four push columns are evenly distributed in a ring shape around the same central axis. The floating seat is provided with an elastic floating plate that can be translated in any horizontal direction, and the top of the push column is provided with a side pulling head. The displacement mechanism is used to drive the push column to move up and down and translate radially. The centering mechanism for heavy-duty circular workpieces pulls the molded coil placed on the floating seat through the side pulling head, and then lifts the molded coil up and resets it once to reset the elastic floating plate. The centering and positioning process is quick and safe, avoiding damage to the workpiece. The heavy-duty coil demolding machine first positions the molded coil through the above method, and then performs the demolding operation, which can fully protect the coil from damage.

Description

Technical Field

[0001] The invention relates to the technical field of superconducting magnet coil assembly, in particular to a circular heavy-duty workpiece centering mechanism and a heavy-duty coil demoulding machine. Background Art

[0002] Large superconducting coils are a crucial component of superstrong magnets. During production, they are wound onto a ring-shaped frame and solidified with epoxy resin. Once the structure is stabilized, the frame is removed. The finished coils maintain strong adhesion to the frame, requiring a demolding force of approximately 30,000 kg to remove the frame. This force must be evenly distributed across the coil's bearing surfaces. For transport and protection, the ring-shaped frame is secured with a pair of flange covers on its upper and lower sides. Demolding the coils requires removing them from the flanges and removing the ring-shaped frame. However, the magnet coils are very heavy, weighing up to 800 kg alone. This weight increases further as the magnetic field strength and range increase. Furthermore, the coils are prone to deformation during demolding, making efficient and safe coil removal a challenge. During coil removal, the first challenge is centering. Failure to properly center the coils can lead to deviations during demolding, resulting in uneven force distribution and deformation. The traditional method of centering is to lift the coil with a mold by a crane and then manually push it for calibration. However, the total mass of the coil, flange and frame is very large, and it is inevitable that they will shake due to inertia when the load is moved. Therefore, manual centering is prone to failure. It is not only time-consuming and labor-intensive, but also easy to collide with the coil during alignment and damage the insulation layer. Summary of the Invention

[0003] In view of the shortcomings of the background technology, the present invention proposes a heavy-duty ring workpiece centering mechanism that can quickly and safely center the coil with a mold. The present invention also proposes a heavy-duty coil demoulding machine that can quickly and safely demould the coil with a mold.

[0004] The present invention proposes a centering mechanism for a circular heavy workpiece, comprising a crane, a frame, four floating seats fixed to the frame, and four push columns mounted on the frame via a displacement mechanism. The crane is located above the frame, and the four floating seats and four push columns are evenly distributed in a ring around the same central axis.

[0005] The floating seat is provided with an elastic floating plate that can be translated in any horizontal direction. The top of the push column is provided with a side pull head. The displacement mechanism is used to drive the push column to rise and fall and translate radially.

[0006] The floating seat also includes an upper slide and a lower slide;

[0007] A horizontally extending upper linear guide is provided on the top of the upper slide, and the elastic floating plate is slidably mounted on the upper linear guide. A horizontally extending lower linear guide is provided on the top of the lower slide, and the upper slide is slidably mounted on the lower linear guide. The extension direction of the upper linear guide is perpendicular to that of the lower linear guide.

[0008] A pair of first sliding rods extend from the elastic floating plate to both sides of the sliding direction, and the upper slide is fixed with a pair of upper limit plates with ear holes, one of the first sliding rods is inserted into the ear hole of one upper limit plate, and the other first sliding rod is inserted into the ear hole of the other upper limit plate, and a return spring is sleeved on the circumference of the first sliding rod between the elastic floating plate and any upper limit plate;

[0009] A pair of second slide bars extend from the upper slide table on both sides of the sliding direction, and a pair of lower limit plates with ear holes are fixed to the lower slide table, wherein one of the second slide bars is passed through the ear hole of one lower limit plate, and the other second slide bar is passed through the ear hole of the other lower limit plate, and a return spring is sleeved on the circumference of the second slide bar between the upper slide table and any one of the lower limit plates;

[0010] The alignment steps include:

[0011] A. Place the workpiece flat on the elastic floating plate using a crane, with the pull heads on each side located within the workpiece circle;

[0012] B. Automatically align the workpiece using the elastic floating plate, then select the ejector pin closest to the inner wall of the workpiece, and drive the selected ejector pin to move radially outward until the workpiece is pulled by the side pulling head until its axis coincides with the central axis;

[0013] C. Drive all the push pins to lift the workpiece synchronously. After the elastic floating plate is reset, drive all the push pins to descend synchronously and place the workpiece flat on the elastic floating plate again.

[0014] Preferably, the displacement mechanism includes a pair of translation guide rails, a pair of vertical guide rails, a pulley, a first motor and a second motor;

[0015] The translation guide rail is fixedly arranged on the frame, the pulley is slidably arranged on the translation guide rail, and the push column is slidably arranged on the vertical guide rail;

[0016] The first motor is installed at the bottom of the pulley and is connected to the bottom of the push column through a telescopic rod;

[0017] The second motor is located at one end of the translation guide rail and is connected to the pulley through a lead screw.

[0018] Preferably, the overhead crane comprises a support shaft, a hanging plate and a turntable, the top of the support shaft is provided with a hanging ring, the middle of the hanging plate is fixedly connected to the support shaft, and the middle of the turntable is rotatably connected to the support shaft;

[0019] There are n horizontally extending track arms evenly arranged around the circumference of the hanging plate, and a hanging arm is slidably arranged on each track arm;

[0020] The turntable is evenly distributed with n eccentric shafts, and each eccentric shaft is connected to a corresponding boom through a connecting rod;

[0021] The turntable is also provided with a lever for driving the turntable to rotate.

[0022] The present invention also provides a heavy-duty coil demoulding machine, which uses the circular heavy-duty workpiece centering mechanism described in any of the above items to perform demoulding and positioning of the molded coil;

[0023] The molded coil includes an upper flange, a lower flange, an annular frame and a coil. The coil is sleeved on the outer circumference of the annular frame. The annular frame is clamped and fixed between the upper flange and the lower flange. A circle of support is provided on the inner circumference of the annular frame.

[0024] The frame is also provided with a set of brackets evenly distributed in a ring shape around the central axis. The brackets are mounted on bracket rails extending in the radial direction, and the push columns extend tongue plates to the side away from the central axis.

[0025] The demoulding steps include:

[0026] a. Demolding and positioning of the molded coil is performed through the heavy-duty workpiece centering mechanism of the circular ring;

[0027] b. The ejector column rises synchronously to eject the upper flange;

[0028] c. Adjust the tongue plates of each jacking column to the bottom of the support platform, then simultaneously raise each jacking column to lift the annular frame and coil, and remove the lower flange;

[0029] d. Adjust each support to the bottom of the coil and simultaneously lower each push column until the support supports the coil and the annular frame;

[0030] e. Adjust each tongue plate to the top of the support, then press down the support to separate the annular frame from the coil;

[0031] f. Use overhead crane to transport the demoulding coil away.

[0032] Preferably, the heavy-duty coil demoulding machine further comprises a locking mechanism, which comprises a bottom slide rail, a slide seat, a connecting column and a lower locking tongue;

[0033] The bottom slide rail extends radially along the coil with the mold, and the slide seat is slidably arranged on the bottom slide rail;

[0034] One end of the slide close to the central axis is fixedly connected to the connecting column, and the other end is provided with a handle;

[0035] The lower locking tongue is fixedly connected to a side of the connecting column facing away from the central axis.

[0036] Preferably, the locking mechanism further comprises an upper locking tongue, a top slide rail is provided at the top end of the connecting column, the upper locking tongue is slidably arranged on the top slide rail with its back facing the central axis, and a push-pull rod is provided at the back of the top slide rail.

[0037] Preferably, the bracket includes at least two arc-shaped supporting plates arranged at intervals.

[0038] The beneficial effects of the present invention include: the circular heavy workpiece centering mechanism pulls the workpiece placed on the floating seat through the side pulling head, and then lifts the workpiece and resets it once to reset the elastic floating plate. The centering and positioning process is fast and safe, and damage to the workpiece is avoided; the heavy coil demolding machine first positions the molded coil through the above method, and then performs the demolding operation, which can fully protect the coil from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention is described in detail below with reference to the embodiments and accompanying drawings, in which:

[0040] Figure 1 It is a three-dimensional structural diagram of the circular ring heavy workpiece centering mechanism of the present invention.

[0041] Figure 2 It is a three-dimensional structural diagram of the floating seat of the present invention.

[0042] Figure 3 It is a three-dimensional structural diagram of the push column and displacement mechanism of the present invention from a radially outer perspective.

[0043] Figure 4 It is a three-dimensional structural diagram of the push column and displacement mechanism of the present invention from the radial inner side perspective.

[0044] Figure 5 It is a three-dimensional structural diagram of the overhead crane of the present invention.

[0045] Figure 6 It is a three-dimensional structural diagram of the heavy-duty coil demoulding machine of the present invention.

[0046] Figure 7 This is a cross-sectional view of a molded coil.

[0047] Figure 8 It is a side view of the locking mechanism of the present invention.

[0048] Figure 9 It is a three-dimensional structural diagram of the bracket of the present invention.

[0049] Reference numerals:

[0050] 1- overhead crane, 11- fulcrum, 12- hanging plate, 13- turntable, 14- lifting ring, 15- track arm, 16- hanging arm, 17- eccentric shaft, 18- connecting rod, 19- lever, 2- frame, 21- workbench, 3- floating seat, 31- elastic floating plate, 311- return spring, 32- upper slide, 33- lower slide, 34- upper linear guide, 35- lower linear guide, 36- first slide, 37- upper limit plate, 38- second slide, 39- lower limit plate, 4- push column, 41- side pull head, 4 2- tongue plate, 51- translation guide rail, 52- vertical guide rail, 53- pulley, 54- first motor, 55- second motor, 6- molded coil, 61- upper flange, 62- lower flange, 63- annular frame, 64- coil, 65- support platform, 7- locking mechanism, 71- bottom slide rail, 72- slide seat, 73- connecting column, 74- upper lock tongue, 75- lower lock tongue, 76- top slide rail, 77- push-pull rod, 78- handle, 8- bracket, 81- bracket track, 82- bracket motor, 83- arc-shaped bracket. DETAILED DESCRIPTION

[0051] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] Thus, a feature indicated in this specification is intended to illustrate one of the features of one embodiment of the present invention, rather than to imply that every embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other, not explicitly described, combinations. Thus, unless otherwise noted, the described combinations are not intended to be limiting.

[0053] The principle of the present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0054] The present invention proposes a ring heavy workpiece centering mechanism, such as Figure 1 As shown, the centering mechanism comprises a crane 1, a frame 2, four floating seats 3 fixed to the frame 2, and four push columns 4 mounted on the frame 2 via a displacement mechanism. The crane 1 is positioned above the frame 2, and the four floating seats 3 and four push columns 4 are evenly distributed in a circular pattern around a common central axis. The floating seats 3 are equipped with elastic floating plates 31 that can translate in any horizontal direction. The tops of the push columns 4 are equipped with side pullers 41. The displacement mechanism is used to drive the lifting and radial translation of the push columns 4.

[0055] The ring heavy workpiece centering mechanism pulls the workpiece placed on the floating seat 3 through the side pull head 41, and then lifts the workpiece and resets it once to reset the elastic floating plate 31. The centering and positioning process is fast and safe, and can avoid damage to the workpiece. Figure 1 As shown, the frame 2 is provided with a workbench 21, four push rods 4 are arranged in a circle at 90 degrees, and four floating seats 3 are also arranged in a circle at 90 degrees. In the initial position, the push rods 4 are in the inner circle and the floating seats 3 are in the outer circle. The centering steps include:

[0056] Place the workpiece flat on the elastic floating plate 31 by the overhead crane 1. At this time, the push pin 4 is in the initial position, and the pull heads 41 on each side are located in the workpiece circle.

[0057] The elastic floating plate 31 is used for automatic centering, and then the side pulling head 41 is selected to be closest to the inner wall of the workpiece, and the selected pushing pin 4 is driven to move radially outward until the side pulling head 41 pulls the workpiece until its axis coincides with the central axis;

[0058] All the pushing pins 4 are driven to synchronously lift the workpiece. After the elastic floating plate 31 is reset, all the pushing pins 4 are driven to synchronously descend to place the workpiece flat on the elastic floating plate 31 again.

[0059] When the overhead crane first hoists the workpiece onto the elastic floating plate 31, the deviation is within control. If the deviation prevents a single side puller 41 from achieving centering, the other side pullers 41 can cooperate to fine-tune the workpiece pulling direction. When the workpiece is placed flat on the elastic floating plate 31 for the second time, the elastic floating plate 31 has dissipated the elastic force caused by the displacement, allowing the side pullers 41 to be released. The workpiece is now centered without lateral forces acting on it.

[0060] like Figure 2 In the illustrated embodiment, in addition to the elastic floating plate 31, the floating seat 3 also includes an upper slide 32 and a lower slide 33. The lower slide 33 is fixedly mounted on the workbench 21. A horizontally extending upper linear guide 34 is provided on the top of the upper slide 32. The elastic floating plate 31 is slidably mounted on the upper linear guide 34. A horizontally extending lower linear guide 35 is provided on the top of the lower slide 33. The upper slide 32 is slidably mounted on the lower linear guide 35. The upper linear guide 34 and the lower linear guide 35 extend perpendicularly.

[0061] A pair of first slide bars 36 extend from the elastic floating plate 31 on both sides in the sliding direction. The upper slide 32 is fixed with a pair of upper limit plates 37 with ears. One of the first slide bars 36 is inserted into the ear hole of one upper limit plate 37, and the other first slide bar 36 is inserted into the ear hole of the other upper limit plate 37. A return spring 311 is sleeved around the first slide bars 36 between the elastic floating plate 31 and either upper limit plate 37.

[0062] A pair of second slide bars 38 extend from the upper slide 32 on both sides of the sliding direction, and a pair of lower limit plates 39 with ear holes are fixed to the lower slide 33, wherein one of the second slide bars 38 is passed through the ear hole of one lower limit plate 39, and the other second slide bar 38 is passed through the ear hole of the other lower limit plate 39, and a return spring 311 is sleeved around the second slide bar 38 between the upper slide 32 and any lower limit plate 39.

[0063] Two return springs 311 are installed on each side of the elastic floating plate 31 and upper slide 32 in their direction of motion. As the workpiece mass increases, more springs can be added to increase the spring force. High-force springs actively center the workpiece when it is first placed. However, as the spring deflection decreases, extremely heavy workpieces cannot be perfectly aligned, requiring the side puller 41 to assist in pulling the workpiece. The elastic floating plate 31 reduces the travel of the side puller 41 pulling the workpiece, further reducing the risk of damage to the workpiece.

[0064] To facilitate control, Figure 3-4 In the illustrated embodiment, each push column is individually equipped with a displacement system. The displacement mechanism includes a pair of translational guide rails 51, a pair of vertical guide rails 52, a pulley 53, a first motor 54, and a second motor 55. The first motor 54 drives the push column 4 up and down, while the second motor 55 drives the push column 4 in translation. The translational guide rails 51 are fixedly mounted on the frame 2, the pulley 53 is slidably mounted on the translational guide rails 51, and the push column 4 is slidably mounted on the vertical guide rails 52; the first motor 54 is mounted at the bottom of the pulley 53 and is connected to the bottom of the push column 4 via a telescopic rod. The second motor 55 is located at one end of the translational guide rail 51 and is connected to the pulley 53 via a lead screw.

[0065] like Figure 5 In the illustrated embodiment, the overhead crane 1 comprises a support shaft 11, a suspension plate 12, and a turntable 13. The top of the support shaft 11 is provided with a suspension ring 14 for attaching an overhead crane. The center of the suspension plate 12 is fixedly connected to the support shaft 11, while the center of the turntable 13 is rotatably connected to the support shaft 11. Four horizontal rail arms 15 are evenly arranged around the circumference of the suspension plate 12. The rail arms 15 extend outward in a cross shape at 90° angles, and a suspension arm 16 is slidably mounted on each rail arm 15. The turntable 13 is also provided with four eccentric shafts 17, each connected to a corresponding suspension arm 16 via a connecting rod 18. A hanging plate is provided at the bottom of each suspension arm 16. The turntable 13 is also provided with a lever 19 for driving the turntable 13. In operation, manually pushing the lever 19 clockwise causes the four suspension arms 16 to expand outward synchronously, while pushing the lever 19 counterclockwise causes the four suspension arms 16 to retract synchronously. The lifting radius of the overhead crane 1 can be changed by means of the turntable 13 and the movable boom 16, making it easier to grab workpieces.

[0066] The present invention also proposes a Figure 6 The heavy-duty coil demoulding machine shown is used for demoulding the molded coil 6. It adopts the annular heavy-duty workpiece centering mechanism described in any of the above embodiments to perform demoulding and positioning on the molded coil 6.

[0067] like Figure 7 As shown, the molded coil 6 includes an upper flange 61, a lower flange 62, an annular skeleton 63 and a coil 64. The coil 64 is sleeved on the outer periphery of the annular skeleton 63. The annular skeleton 63 is clamped and fixed between the upper flange 61 and the lower flange 62. A circle of support 65 is provided on the inner periphery of the annular skeleton 63.

[0068] The heavy-duty coil demolding machine consists of a crane 1, a frame 2, four floating seats 3 fixed to the frame 2, and four push columns 4 mounted on the frame 2 via a displacement mechanism. The crane 1 is located above the frame 2. The four floating seats 3 and four push columns 4 are evenly distributed in a circular pattern around a common central axis. The floating seats 3 are equipped with elastic floating plates 31 that can translate in any horizontal direction. The tops of the push columns 4 are equipped with side pullers 41. The displacement mechanism is used to drive the lifting and radial translation of the push columns 4.

[0069] The frame 2 is further provided with a set of brackets 8 evenly distributed in an annular shape around the central axis. The brackets 8 are mounted on radially extending bracket rails 81 and driven by bracket motors 82 to move radially along the workbench 21. The ejector column 4 extends a tongue plate 42 to the side away from the central axis.

[0070] During demolding, the molded coil 6 is first aligned and positioned. The heavy-duty coil demolding machine uses the side puller 41 to pull the molded coil 6 placed on the floating seat 3. The molded coil 6 is then lifted and reset once to reset the elastic floating plate 31. This alignment process is quick and safe, and can avoid damage to the coil 64. The frame 2 is equipped with a disc-shaped workbench 21. Four push pins 4 are arranged in a circle at 90° intervals. Four floating seats 3 are also arranged in a circle at 90° intervals. In the initial position, the push pins 4 are on the inner circle and the floating seats 3 are on the outer circle. The alignment steps include:

[0071] A. Place the molded coil 6 flat on the elastic floating plate 31 using the overhead crane 1. The push pins 4 are now in their initial positions, with the pull tabs 41 on each side located within the inner ring of the molded coil 6.

[0072] B. Using the elastic floating plate 31 for automatic centering, the side pull head 41 selects the push pin 4 closest to the inner wall of the mold coil 6, and drives the selected push pin 4 to move radially outward until the side pull head 41 pulls the mold coil 6 until its axis coincides with the central axis;

[0073] C. Drive all the push pins 4 to synchronously lift the molded coil 6. After the elastic floating plate 31 is reset, drive all the push pins 4 to synchronously descend and place the molded coil 6 flat on the elastic floating plate 31 again.

[0074] When the overhead crane 1 first hoists the molded coil 6 onto the elastic floating plate 31, the deviation is within the control range. If the deviation in direction prevents a single side puller 41 from achieving centering, the other side pullers 41 can cooperate to fine-tune the pulling direction of the molded coil 6. When the molded coil 6 is placed flat on the elastic floating plate 31 for the second time, the elastic floating plate 31 has dissipated the elastic force caused by the displacement, allowing the side pullers 41 to be released. The molded coil 6 is now centered without any lateral forces acting on it.

[0075] In this embodiment, in addition to the elastic floating plate 31, the floating seat 3 also includes an upper slide 32 and a lower slide 33. The lower slide 33 is fixedly mounted on the workbench 21. A horizontally extending upper linear guide 34 is provided on the top of the upper slide 32. The elastic floating plate 31 is slidably mounted on the upper linear guide 34. A horizontally extending lower linear guide 35 is provided on the top of the lower slide 33. The upper slide 32 is slidably mounted on the lower linear guide 35. The upper linear guide 34 and the lower linear guide 35 extend perpendicularly.

[0076] A pair of first slide bars 36 extend from the elastic floating plate 31 on both sides in the sliding direction. The upper slide 32 is fixed with a pair of upper limit plates 37 with ears. One of the first slide bars 36 is inserted into the ear hole of one upper limit plate 37, and the other first slide bar 36 is inserted into the ear hole of the other upper limit plate 37. A return spring 311 is sleeved around the first slide bars 36 between the elastic floating plate 31 and either upper limit plate 37.

[0077] A pair of second slide bars 38 extend from the upper slide 32 on both sides of the sliding direction, and a pair of lower limit plates 39 with ear holes are fixed to the lower slide 33, wherein one of the second slide bars 38 is passed through the ear hole of one lower limit plate 39, and the other second slide bar 38 is passed through the ear hole of the other lower limit plate 39, and a return spring 311 is sleeved around the second slide bar 38 between the upper slide 32 and any lower limit plate 39.

[0078] There are two upper linear guides 34 and two lower linear guides 35. Two return springs 311 are installed on each side of the elastic float 31 and upper slide 32 in the direction of movement. If the mass of the molded coil 6 increases, more guides and springs can be added to increase the load-bearing capacity and elastic force. The high-elasticity springs can actively center the molded coil 6 during initial placement. As the spring deformation decreases, the extremely heavy molded coil 6 cannot be perfectly centered, requiring the side pull head 41 to assist in pulling the molded coil 6. The elastic float 31 can reduce the travel of the side pull head 41 pulling the molded coil 6, further reducing the risk of damage to the molded coil 6.

[0079] For ease of control, each push column 4 is individually equipped with a displacement system. The displacement mechanism includes a pair of translation guide rails 51, a pair of vertical guide rails 52, a pulley 53, a first motor 54 and a second motor 55. The second motor 55 is located at one end of the translation guide rail 51 and is connected to the pulley 53 through a screw. The function of the first motor 54 is to drive the push column 4 to rise and fall, and the function of the second motor 55 is to drive the push column 4 to translate. The translation guide rail 51 is fixedly set on the frame 2, the pulley 53 is slidably set on the translation guide rail 51, and the push column 4 is slidably set on the vertical guide rail 52; the first motor 54 is installed at the bottom of the pulley 53 and is connected to the bottom of the push column 4 through a telescopic rod.

[0080] In this embodiment, the overhead crane 1 comprises a support shaft 11, a suspension plate 12, and a turntable 13. The top of the support shaft 11 is provided with a suspension ring 14 for attaching an overhead crane. The middle portion of the suspension plate 12 is fixedly connected to the support shaft 11, while the middle portion of the turntable 13 is rotatably connected to the support shaft 11. Four horizontally extending rail arms 15 are evenly arranged around the circumference of the suspension plate 12. The rail arms 15 extend outward in a cross shape at 90° angles, and a suspension arm 16 is slidably mounted on each rail arm 15. The turntable 13 is also provided with four eccentric shafts 17, each connected to a corresponding suspension arm 16 via a connecting rod 18. A hanging plate is provided at the bottom of each suspension arm 16. The turntable 13 is also provided with a lever 19 for driving the turntable 13. During operation, manually pushing the lever 19 clockwise causes the four suspension arms 16 to expand outward synchronously, while pushing the lever 19 counterclockwise causes the four suspension arms 16 to retract synchronously. The lifting radius of the overhead crane 1 can be changed by means of the turntable 13 and the movable lifting arm 16, so as to facilitate the grabbing of the molded coil 6.

[0081] After completing the centering and positioning, the outer mold is removed and the coil 64 is taken out. The demoulding steps include:

[0082] a. Demolding and positioning of the molded coil 6 by a heavy-duty ring workpiece centering mechanism;

[0083] b. The ejector column rises synchronously to eject the upper flange 61;

[0084] c. Adjust the tongue plate 42 of each push column 4 to the bottom of the support platform 63, then simultaneously raise each push column 4 to lift the annular frame 63 and coil 64, and remove the lower flange 62;

[0085] d. Adjust each support 65 to the bottom of the coil 64 and simultaneously lower each push column 4 until the support 65 supports the coil 64 and the annular frame 63;

[0086] e. Adjust each tongue plate 42 to the top of the support 65, and then press down the support 65 to separate the annular frame 63 from the coil 64;

[0087] f. The coil 64 that has been demoulded is transported away by the overhead crane 1.

[0088] like Figure 8 In the illustrated embodiment, the heavy-duty coil demoulding machine further comprises a locking mechanism 7 , which comprises a bottom slide rail 71 , a slide seat 72 , a connecting post 73 , an upper locking tongue 74 and a lower locking tongue 75 .

[0089] A bottom rail 71 extends radially along the molded coil 6, and a slide 72 is slidably mounted on the rail. One end of the slide 72, closest to the central axis, is fixedly connected to a connecting post 73, while the other end is provided with a handle 78. A lower locking tongue 75 is fixedly attached to the side of the connecting post 73 facing away from the central axis. The connecting post 73, upper locking tongue 74, and lower locking tongue 75 are initially positioned within the inner ring of the molded coil 6. Once aligned, the handle is pulled outward, causing the slide 72 to move radially outward along the workbench 21. A step is provided at the bottom of the lower locking tongue 75. Once in position, the step allows the lower locking tongue 75 to engage the sidewalls and top of the inner ring of the lower flange 62, preventing displacement during demolding.

[0090] A top rail 76 is installed at the top of connecting column 73. An upper locking tongue 74 slides on top rail 76, facing away from the central axis. A push-pull rod 77 is installed on the back of the top rail. The upper flange 61 and lower flange 62 are secured together by multiple bolts. To prevent displacement between the frame and lower flange 62 when the bolts are removed, after lower locking tongue 75 locks lower flange 62, push-pull rod 77 can be pulled outward, allowing upper locking tongue 74 to press against the top of support platform 65. After upper flange 61 is removed and transported by overhead crane 1, push-pull rod 77 back in, and proceed to step c.

[0091] like Figure 9 In the illustrated embodiment, the bracket 8 includes three arc-shaped support plates 83 spaced apart from each other, which can increase the force-bearing area between the bracket 8 and the coil 64 and avoid damage to the coil 64 when it is separated from the annular frame 63.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ring heavy workpiece centering mechanism, characterized in that: It includes a traveling crane, a frame, four floating seats fixed on the frame, and four pushing columns installed on the frame through a displacement mechanism. The traveling crane is located above the frame, and the four floating seats and four pushing columns are evenly distributed in a ring around the same central axis. The floating seat is provided with an elastic floating plate that can be translated in any horizontal direction, the top of the push column is provided with a side pull head, and the displacement mechanism is used to drive the push column to rise and fall and radially translate; The floating seat also includes an upper slide and a lower slide; A horizontally extending upper linear guide is provided on the top of the upper slide, and the elastic floating plate is slidably mounted on the upper linear guide. A horizontally extending lower linear guide is provided on the top of the lower slide, and the upper slide is slidably mounted on the lower linear guide, and the upper linear guide is perpendicular to the extension direction of the lower linear guide. The elastic floating plate extends a pair of first sliding rods on both sides of the sliding direction, and the upper slide is fixed with a pair of upper limit plates with ear holes, one of the first sliding rods is inserted into the ear hole of one upper limit plate, and the other first sliding rod is inserted into the ear hole of the other upper limit plate, and a return spring is sleeved on the circumference of the first sliding rod between the elastic floating plate and any upper limit plate; A pair of second slide bars extend from the upper slide table on both sides of the sliding direction, and a pair of lower limit plates with ear holes are fixed to the lower slide table, wherein one second slide bar is inserted into the ear hole of one lower limit plate, and the other second slide bar is inserted into the ear hole of the other lower limit plate, and a return spring is sleeved on the circumference of the second slide bar between the upper slide table and any one of the lower limit plates; The alignment steps include: A. Place the workpiece flat on the elastic floating plate using a crane, with the pull heads on each side located within the workpiece circle; B. Automatically align the workpiece using the elastic floating plate, then select the ejector pin closest to the inner wall of the workpiece, and drive the selected ejector pin to move radially outward until the workpiece is pulled by the side pulling head until its axis coincides with the central axis; C. Drive all the push pins to lift the workpiece synchronously. After the elastic floating plate is reset, drive all the push pins to descend synchronously and place the workpiece flat on the elastic floating plate again.

2. The ring heavy workpiece centering mechanism according to claim 1, characterized in that: The displacement mechanism includes a pair of translation guide rails, a pair of vertical guide rails, a pulley, a first motor and a second motor; The translation guide rail is fixedly arranged on the frame, the pulley is slidably arranged on the translation guide rail, and the push column is slidably arranged on the vertical guide rail; The first motor is installed at the bottom of the pulley and is connected to the bottom of the push column through a telescopic rod; The second motor is located at one end of the translation guide rail and is transmission-connected to the pulley via a lead screw.

3. The ring heavy workpiece centering mechanism according to claim 1, characterized in that: The overhead crane comprises a support shaft, a hanging plate and a turntable, the top of the support shaft is provided with a hanging ring, the middle portion of the hanging plate is fixedly connected to the support shaft, and the middle portion of the turntable is rotatably connected to the support shaft; The circumference of the hanging plate is evenly provided with n horizontally extending track arms, and a hanging arm is slidably provided on each track arm; The turntable is evenly distributed with n eccentric shafts, and each eccentric shaft is connected to a corresponding boom through a connecting rod; The turntable is also provided with a shifting rod for driving the turntable to rotate.

4. A heavy-duty coil demoulding machine, characterized in that: The workpiece is demoulded and positioned using the ring heavy workpiece centering mechanism described in any one of claims 1 to 3; The workpiece is a molded coil, which includes an upper flange, a lower flange, an annular frame and a coil. The coil is sleeved on the outer periphery of the annular frame, and the annular frame is clamped and fixed between the upper flange and the lower flange. A circle of support is provided on the inner periphery of the annular frame. The frame is further provided with a set of brackets evenly distributed in an annular shape around the central axis, the brackets being mounted on bracket rails extending radially, and the push columns extending tongue plates toward a side away from the central axis; The demoulding steps include: a. Demolding and positioning of the molded coil is performed through the heavy-duty workpiece centering mechanism of the circular ring; b. The ejector column rises synchronously to eject the upper flange; c. Adjust the tongue plates of each jacking column to the bottom of the support platform, then simultaneously raise each jacking column to lift the annular frame and coil, and remove the lower flange; d. Adjust each support to the bottom of the coil and simultaneously lower each push column until the support supports the coil and the annular frame; e. Adjust each tongue plate to the top of the support, then press down the support to separate the annular frame from the coil; f. Use overhead crane to transport the demoulding coil away.

5. The heavy-duty coil demoulding machine according to claim 4, characterized in that: The heavy-duty coil demoulding machine further comprises a locking mechanism, which comprises a bottom slide rail, a slide seat, a connecting column and a lower locking tongue; The bottom slide rail extends radially along the coil with the mold, and the slide seat is slidably arranged on the bottom slide rail; One end of the slide close to the central axis is fixedly connected to the connecting column, and the other end is provided with a handle; The lower locking tongue is fixedly connected to a side of the connecting column facing away from the central axis.

6. The heavy-duty coil demoulding machine according to claim 5, characterized in that: The locking mechanism also includes an upper locking tongue. The top end of the connecting column is provided with a top slide rail. The upper locking tongue is slidably arranged on the top slide rail with its back facing the central axis. A push-pull rod is provided on the back of the top slide rail.

7. The heavy-duty coil demoulding machine according to claim 4, characterized in that: The bracket includes at least two arc-shaped supporting plates arranged at intervals.

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