Wire winding mechanism for wire sawing

Abstract

The application discloses a wire winding mechanism for wire cutting, which comprises a cutting head skeleton, split winding wheel mechanisms and a reversing winding mechanism; the split winding wheel mechanisms are provided in four groups, and the four groups of split winding wheel mechanisms are arranged in a "mouth" type layout at the front end of the cutting head skeleton; the reversing winding mechanism is arranged at the rear end of the cutting head skeleton; and a slot rectifying mechanism is further arranged at the upper end of the cutting head skeleton. The wire winding mechanism for wire cutting is provided with a cutting edge skin falling prevention device on the split winding wheel mechanism at the bottom, and a slot rectifying mechanism is arranged on the cutting head, so that the slot changing operation is simple, the slot changing positioning precision is high, the working efficiency is improved, and the risk of mechanical injury is reduced; the split winding wheel mechanism is installed through end face teeth, so that the installation is convenient and the weight is light; meanwhile, the split roller wheel is composed of two groups of roller wheels with opposite rotating directions, so that the cutting chip forces are offset to each other when a crystal bar is cut, and the shaking of the machining object can be reduced to the maximum extent.

Description

Technical Field

[0001] This invention relates to the field of diamond wire cutting equipment technology, and more specifically to a wire winding mechanism for wire cutting. Background Technology

[0002] The cutting principle of diamond wire cutting machines is similar to that of a bow saw. A high-speed rotating and reciprocating winding wheel drives the diamond wire in a reciprocating motion, creating a relative grinding motion between the diamond wire and the workpiece being cut, thereby achieving the cutting purpose. Multi-wire cutting technology is currently one of the most advanced silicon wafer processing technologies in the world. Its principle is to use a high-speed moving steel wire to drive a cutting blade attached to the wire to rub against hard and brittle materials such as semiconductors, thereby achieving the cutting effect. Throughout the process, the diamond wire is guided by multiple guide wheels to form a wire mesh on the main wire roller. Compared with other technologies, multi-wire cutting technology has advantages such as high efficiency, high capacity, and high precision. However, currently used conventional diamond wire cutting devices still have significant drawbacks. During diamond wire cutting, cutting debris falls and causes wire breakage; the winding wheel replacement process is complex, requiring disassembly of the winding mechanism, resulting in significant time waste.

[0003] In wire EDM, the winding wheel is a crucial component of the machine tool. It changes the direction of the diamond wire. A typical U-shaped wire EDM head consists of four pairs of winding wheel mechanisms. During production, the diamond wire frequently contacts the winding wheels, causing them to wear easily and requiring replacement after a period of use, thus increasing the consumption of the cutting wire. Currently, the winding wheels are generally mounted on the same drive shaft. During maintenance and replacement, all components of the winding wheel mechanism must be disassembled, making disassembly and maintenance difficult and significantly increasing production costs.

[0004] Patent CN209971164U discloses a three-grid horizontal strip cutting machine. Its moving cutting system includes a base plate, a self-driven spindle, a rotary wheel frame, a first support column, a second support column, and a third support column. The first, second, and third support columns are all mounted on the base plate. Each set of the first, second, and third support columns is provided and is installed rotationally symmetrically. The self-driven spindle is mounted on each set of the first, second, and third support columns. The rotary wheel frame is mounted on the base plate. The swivel wheel frame is provided with guide wheels, and the base plate is provided with... It has wire feeding holes and workpiece holes. However, the existing three-wire system... The moving cutting system of the horizontal strip cutting machine has the problem that the diamond wire needs to be routed around the spiral wheel frame when threading, which makes the winding difficult.

[0005] Furthermore, after prolonged use, the grooves on the rollers will wear down, affecting cutting accuracy. When changing the groove position of the roller, the roller's movement distance needs to be calibrated. Usually, the movement distance needs to be measured and determined manually by the operator, which is not only inefficient, but also poses a risk of mechanical injury during operation.

[0006] Based on the above, the present invention proposes a wire winding mechanism for wire cutting, which can effectively solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a winding mechanism for wire EDM. The wire EDM winding mechanism of this invention features a split-type winding wheel mechanism at the bottom, equipped with an anti-cutting edge sheath falling device to prevent the edge sheath from falling and hitting the diamond wire during the cutting process, thus preventing wire breakage. This improves the stability of the equipment during operation and increases work efficiency. A slot correction mechanism is installed on the cutting head, simplifying slot changing operations and ensuring high positioning accuracy, thereby improving work efficiency while reducing the risk of mechanical injury. The split-type winding wheel mechanism is internally mounted via end face teeth, making installation convenient and lightweight. Furthermore, the split-type roller consists of two sets of rollers rotating in opposite directions, which cancel each other out during crystal ingot cutting, minimizing vibration of the workpiece.

[0008] This invention is achieved through the following technical solution: A wire winding mechanism for wire EDM includes a cutting head frame, a split-type winding wheel mechanism, and a reversing winding mechanism; the split-type winding wheel mechanism is provided in four groups, and the four groups of split-type winding wheel mechanisms are arranged in a "U" shape at the front end of the cutting head frame; The reversing winding mechanism is located at the rear end of the cutting head frame; The upper end of the cutting head frame is also equipped with a slot-changing and correction mechanism.

[0009] The wire cutting winding mechanism of this invention features a split-type winding wheel mechanism at the bottom, equipped with an anti-cutting edge sheath falling device to prevent the edge sheath from falling and hitting the diamond wire during the cutting process, thus preventing wire breakage. This improves the stability of the equipment during operation and increases work efficiency. A groove correction mechanism is provided on the cutting head, which simplifies groove changing operations and provides high positioning accuracy, improving work efficiency while reducing the risk of mechanical injury. The split-type winding wheel mechanism is internally mounted via end face teeth, making installation convenient and lightweight. Furthermore, the split-type roller consists of two sets of rollers rotating in opposite directions, which cancel each other out during crystal rod cutting, minimizing vibration of the workpiece.

[0010] Preferably, the two sets of split-type winding wheel mechanisms located at the bottom are equipped with a device to prevent the crystal rod edge from falling off.

[0011] Preferably, the split-type winding wheel mechanism includes: a drive shaft, a driven shaft, a flexible coupling, a servo drive motor, a drive roller, and a driven roller. Both the drive shaft and the driven shaft are equipped with bushing housings. One end of the flexible coupling is sleeved on the drive shaft, and the other end is sleeved on the servo drive motor. The drive roller is connected to the drive shaft via a right-side tooth, and the driven roller is connected to the driven shaft via a left-side tooth. The right-side and left-side teeth include working tooth surfaces and non-working end surfaces. Preferably, both the right end face tooth and the left end face tooth are provided with a locking device, the locking device including a locking bolt and a threaded through hole; Preferably, the bushing housing has a bearing cavity inside, and an angular contact bearing is installed in the bearing cavity. The inner ring of the angular contact bearing is tightly fitted with the drive shaft, and the outer ring of the angular contact bearing is tightly fitted with the bearing cavity. Preferably, the angular contact bearings are provided in two sets, including an inner angular contact bearing and an outer angular contact bearing; Preferably, a bushing is provided between the two sets of angular contact bearings; Preferably, a locking nut is threaded onto the outer side of the external angular contact bearing; Preferably, the reversing winding mechanism includes a connecting plate, a reversing bracket column is provided behind the connecting plate, a reversing bracket is installed on the reversing bracket column, the reversing bracket has a stepped mounting surface, a fixing frame is hinged to the stepped mounting surface, a reversing guide wheel is installed on the fixing frame, the reversing guide wheel includes an aluminum disc and a fixed shaft, the aluminum disc is installed on the fixed shaft, a deep groove ball bearing is installed between the aluminum disc and the fixed shaft, the fixed shaft is installed through the fixing frame and has an angle adjustment device at its tail end; Preferably, the set of reversing brackets is provided with multiple stepped mounting surfaces, and each stepped mounting surface is correspondingly mounted with a reversing guide wheel. The direction of the reversing guide wheel is perpendicular to the tangential direction of the cutting line wheel, and the reversing guide wheels in each set are two degrees apart. Preferably, the rear end of the connecting plate is further provided with a cable entry / exit device, which includes a cable entry frame, a mounting frame and a cable entry guide wheel. The cable entry frame is hinged to the rear end of the connecting plate, and the cable entry / exit guide wheel is mounted on the tail end of the cable entry frame through the mounting frame. Preferably, the slot-changing and correction mechanism includes a sliding device and an adjusting device; the cutting head frame is slidably disposed at the lower end of the connecting plate via the sliding device, and the cutting head frame and one side of the connecting plate are connected and fixedly fixed. An adjusting device, the adjusting device comprising: an adjusting shaft seat, an adjusting screw, an adjusting gasket and a fixing block, wherein the adjusting shaft seat is fixedly mounted on one side of the cutting head frame; one end of the adjusting screw is fixed on the fixing block, and the other end is fixed with an adjusting post; the adjusting gasket can be inserted between the adjusting post and the fixing block; the adjusting post and the adjusting screw can lock the adjusting shaft seat and the fixing block; Preferably, the sliding device 3 comprises a linear rail and a linear bearing, the linear rail is arranged at the upper end of the cutting head frame, the linear bearing is slidably arranged on the linear rail, and the upper end of the linear bearing is fixedly connected with the connecting plate; Preferably, the upper end of the adjusting shaft seat 41 is provided with a "U"-shaped groove, and the adjusting screw is arranged in the "U"-shaped groove; Preferably, the adjusting gasket is of an inverted "U" shape, and the thickness of the adjusting gasket is equal to the distance between two adjacent wire grooves on the roller wheel.

[0012] Preferably, the outer surface of the aluminum disc is sleeved with a rubber wheel, the rubber wheel is in close contact with the aluminum disc, and the rubber wheel is made of polyurethane.

[0013] Preferably, four sets of the reversing support columns are provided in total, and two sets of reversing brackets are provided on each set of the reversing support columns.

[0014] Preferably, five sets of the adjusting gaskets are provided in total.

[0015] Preferably, a waterproof bellows guard is connected between the cutting head frame and the connecting plate.

[0016] Preferably, the shaft sleeve box is provided with a threaded hole, the outer side of the shaft sleeve box is provided with a bearing gland, and the bearing gland and the threaded hole can be connected and fixed by a bolt.

[0017] Preferably, a waterproof sealing ring is further arranged on the inner side of the shaft sleeve box.

[0018] Preferably, a tension adjusting mechanism is further arranged at the upper end of the reversing winding mechanism; Preferably, a lubricating and cooling device is further arranged at the front end of the cutting head frame, the lubricating and cooling device is arranged in a "mouth"-shaped layout on the inner side of the split winding wheel mechanism, and spray nozzles are arranged on the lubricating and cooling device at equal intervals.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects: In the winding mechanism for wire cutting of the present invention, the split winding wheel mechanism at the bottom is provided with a device for preventing cut edge scraps from falling, which prevents the edge scraps generated during the cutting process from falling and hitting the diamond wire to cause wire breakage, and improves the stability during the operation of the equipment, and improves the working efficiency; The cutting head is provided with a slot deviation correction mechanism, which makes slot changing operation simple with high slot changing positioning accuracy, improves work efficiency while reducing the risk of mechanical injury to personnel; The split winding wheel mechanism is internally mounted via face teeth, which is convenient to install and light in weight. Meanwhile, the split roller wheel set consists of two groups of roller wheels rotating in opposite directions, so that the cutting forces cancel each other out when cutting the crystal ingot, which can minimize the jitter of the processing object to the greatest extent.

[0020] The roller wheel of the split winding wheel mechanism according to the present invention is mounted on the rotating shaft via face teeth, which can be separated only by rotation during disassembly and maintenance, improving the work efficiency during maintenance; In the split winding wheel mechanism according to the present invention, two roller wheels rotating in opposite directions are arranged in the same group of split winding wheel mechanisms, which can significantly reduce the number of roller wheels, lower the cost, and operate stably, realizing the purpose of multi-wire cutting with a single cutting steel wire; Since the driving roller wheel and the driven roller wheel of the split winding wheel mechanism according to the present invention rotate in opposite directions, the cutting forces cancel each other out, which can minimize the jitter of the processing object to the greatest extent.

[0021] A single diamond wire of the reversing winding mechanism according to the present invention is wound on the cutting mechanism to form a square-shaped cutting wire mesh, achieving the purpose of realizing multi-wire cutting with a single diamond wire; The reversing winding mechanism according to the present invention realizes the staggered installation of the reversing guide wheels on the reversing support through different stepped surfaces, so that no mutual interference occurs between the reversing guide wheels when winding the diamond wire, and at the same time, the wire can be threaded directly without bypassing the guide wheel support, improving the work efficiency of wire threading.

[0022] The slot deviation correction mechanism according to the present invention can realize the function of moving the diamond wire from the original wire slot to other wire slots only by rotating the adjusting post through the adjusting device and then inserting or pulling out the corresponding adjusting shim, which is simple in operation, high in slot changing positioning accuracy, and improves work efficiency while reducing the risk of mechanical injury to personnel. Brief Description of the Drawings

[0023] Figure 1 is a first structural schematic view of the present invention; Figure 2 is a structural schematic view of the split winding wheel mechanism according to the present invention; Figure 3 is a cross-sectional view of the split winding wheel mechanism according to the present invention; Figure 4 is a partial enlarged view of part C in Figure 3 of the present invention; Figure 5 is a schematic view of the face tooth meshing structure of the split winding wheel mechanism according to the present invention; Figure 6 is a schematic view of the face tooth opening structure of the split winding wheel mechanism according to the present invention; Figure 7 is a second structural schematic view of the present invention; Figure 8 is a partial enlarged view of point A in Figure 7 of this invention; Figure 9 is a partial enlarged view of point B in Figure 7 of this invention; Figure 10 is a front view of the present invention; Figure 11 is a schematic diagram of the structure of the present invention (III) (some parts / structures omitted); Figure 12 is a schematic diagram of the structure of the present invention (IV) (mainly showing the structure of the slot changing and correction mechanism); Figure 13 is an enlarged view of part E in Figure 12 of this invention; In the diagram, D1 represents the cutting head skeleton. D2, Split-type winding wheel mechanism; 201, Drive shaft; 202, Driven shaft; 203, Flexible coupling; 204. Servo drive motor; 205, drive roller; 2051, right end face tooth; 20511, working tooth surface; 20512, non-working end face; 206, driven roller; 2061, left end face tooth; 207, bushing housing; 2071, bearing cavity; 2072, angular contact bearing; 20721, internal angular contact bearing; 20722, external angular contact bearing; 2073, bushing; 2074, locking nut; 2075, threaded hole; 2076, bearing cap; 2077, waterproof sealing ring; 208, locking device; 2081, locking bolt; 2082, threaded through hole; D24, crystal rod edge anti-drop device; D3, Reversing winding mechanism; In the figure, 301, Connecting plate; 302, Reversing bracket column; 303, Reversing bracket; 3031, Stepped mounting surface; 3032, Fixing bracket; 304, Guide wheel for changing direction; 3041, Aluminum disc; 3042, Fixing shaft; 30421, Angle adjustment device; 3043, Rubber wheel; 305, Cable entry / exit device; 3051, Cable entry frame; 3052, Mounting bracket; 3053, Cable entry / exit guide wheel; D4, Groove changing and correction mechanism; 403, Sliding device; 4031, Linear track; 4032, Linear bearing; 404, Adjustment device; 4041, Adjustment shaft seat; 40411, "U" groove; 4042, Adjustment screw; 4043, Adjustment shim; 4044, Fixing block; 4045, Adjustment column; 405, Waterproof accordion cover; D5, tension adjustment mechanism; D6, lubrication and cooling device. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of the present invention, specific embodiments are described below. Preferred embodiments of the present invention are described herein, but it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0025] Example: As shown in Figures 1 to 13, a wire cutting winding mechanism includes: a cutting head frame (in practical applications, a (wire) cutting head is installed inside the cutting head frame), a split-type winding wheel mechanism, and a reversing winding mechanism. The split-type winding wheel mechanism has four sets, arranged in a "U" shape at the front end of the cutting head frame. The reversing winding mechanism is located at the rear end of the cutting head frame. A single diamond cutting wire is wound around the V-groove of the roller, and the reversing winding mechanism reverses the direction of the wire, ultimately winding it into a 15mm x 15mm wide, 45° front-to-back interlaced wire mesh, transforming single-wire cutting into multi-wire cutting and improving production efficiency. The upper end of the cutting head frame is also equipped with a groove-changing and correction mechanism.

[0026] As a further preferred embodiment, the split-type winding wheel mechanism includes: a drive shaft, a driven shaft, a flexible coupling, a servo drive motor, a drive roller, and a driven roller. Both the drive shaft and the driven shaft are equipped with bushing housings. One end of the flexible coupling is sleeved on the drive shaft, and the other end is sleeved on the servo drive motor. The drive roller is connected to the drive shaft via a right-side tooth, and the driven roller is connected to the driven shaft via a left-side tooth. The right-side and left-side teeth include working tooth surfaces and non-working end faces. In actual use, the servo drive motor drives the drive shaft through the flexible coupling... The drive shaft rotates, driving the drive roller to rotate via the right-end teeth. As the drive roller rotates, it drives the diamond wire to cut in the predetermined direction. The driven roller rotates under the influence of the diamond wire, but in the opposite direction to the drive roller. Because the drive and driven rollers rotate in opposite directions, their cutting forces cancel each other out, minimizing vibration of the workpiece. The separate winding wheel mechanism in the same set has two rollers rotating in opposite directions, significantly reducing the number of rollers, lowering costs, and ensuring smooth movement, achieving multi-wire cutting with a single wire.

[0027] As shown in Figure 5, during the installation process of the split-type winding wheel mechanism, the driving roller is installed on the driving shaft through the right end face tooth. After the working tooth surface and non-working end face of the right end face tooth mesh with each other, the driven roller is installed. After both are installed, as shown in Figure 6, the end face tooth is rotated to lock the working tooth surfaces of the end face tooth so that they are aligned. During disassembly and maintenance, only the end face tooth needs to be rotated to separate the parts, which improves the work efficiency during maintenance.

[0028] As a further preferred embodiment, both the right end face tooth and the left end face tooth are provided with locking devices. The locking device includes a locking bolt and a threaded through hole. After installation, the end face teeth are locked by the locking device to prevent the equipment from being misaligned due to centrifugal force during operation.

[0029] As a further preferred embodiment, the bushing housing is provided with a bearing cavity, and an angular contact bearing is installed in the bearing cavity. The inner ring of the angular contact bearing is in close contact with the drive shaft, and the outer ring of the angular contact bearing is in close contact with the bearing cavity, thereby reducing friction through the angular contact bearing.

[0030] As a further preferred embodiment, the angular contact bearing is provided in two sets, including an inner angular contact bearing and an outer angular contact bearing. Providing two sets of bearings reduces friction and extends the service life of the equipment.

[0031] As a further preferred embodiment, a bushing is provided between the two sets of angular contact bearings.

[0032] As a further preferred embodiment, a locking nut is fixed to the outer thread of the outer angular contact bearing.

[0033] As a further preferred embodiment, the bushing housing is provided with a threaded hole, and a bearing cover is provided on the outside of the bushing housing. The bearing cover and the threaded hole can be connected and fixed by a bolt.

[0034] By combining the above technical solutions, the bearing can be fixed in the bushing box. When replacing the bearing, it is only necessary to remove the bolt from the threaded hole to remove the bearing cover and replace the bearing directly, which simplifies the equipment maintenance steps.

[0035] As a further preferred embodiment, a waterproof sealing ring is also provided inside the bushing housing. Since wire cutting requires cutting fluid for cooling and lubrication, there is a possibility that cutting fluid and profile debris may splash into the bushing housing during the cutting process, which may reduce the life of the bearing or drive shaft. The waterproof sealing ring can effectively prevent the above situation from occurring.

[0036] As a further preferred embodiment, the reversing winding mechanism includes a connecting plate, a reversing bracket column is provided behind the connecting plate, a reversing bracket is installed on the reversing bracket column, the reversing bracket has a stepped mounting surface, a fixing frame is hinged to the stepped mounting surface, a reversing guide wheel is installed on the fixing frame, including an aluminum disc and a fixed shaft, the aluminum disc is installed on the fixed shaft, the fixed shaft is installed through the fixing frame and has an angle adjustment device at its tail end.

[0037] In the present invention, the reversing guide wheel is mounted on the stepped mounting surface of the reversing support, and the staggered installation of the reversing guide wheels on the reversing support is realized through different stepped surfaces, so that mutual interference between the reversing guide wheels will not occur when winding the diamond wire. At the same time, the wire can be threaded directly without bypassing the guide wheel support during threading, which improves the working efficiency of threading; the aluminum disc is mounted on the fixed shaft through a deep groove ball bearing, which converts the rolling friction between the aluminum disc and the fixed shaft into the friction between the two and the deep groove ball bearing, prolongs the service life of the reversing guide wheel. At the same time, the angle adjusting device at the tail end can adjust the diamond wire according to the actual winding angle for fine adjustment, reduce the jitter phenomenon between the diamond wire reversing winding mechanism and the cutting mechanism, prolong the service life of the reversing winding mechanism and the cutting mechanism, and improve the cutting accuracy.

[0038] As a further preferred embodiment, a rubber wheel is sleeved on the outer surface of the aluminum disc, the rubber wheel is in close contact with the aluminum disc, and the rubber wheel is made of polyurethane. The rubber wheel made of polyurethane is wear-resistant, which can effectively improve the service life of the equipment, and can be directly and quickly replaced when worn to a certain extent.

[0039] As a further preferred embodiment, there are four sets of reversing support columns in total, and two sets of reversing supports are arranged on each set of the reversing support columns.

[0040] As a further preferred embodiment, one set of the reversing supports is provided with a plurality of stepped mounting surfaces, each of the stepped mounting surfaces is correspondingly installed with a reversing guide wheel, the direction of the reversing guide wheel is perpendicular to the tangential direction of the diamond wire, and there is a two-degree difference between each reversing guide wheel in each set.

[0041] As a further preferred embodiment, a wire inlet and outlet device is further arranged at the rear end of the connecting plate, the wire inlet and outlet device comprises a wire inlet frame, a mounting frame and a wire inlet and outlet guide wheel, the wire inlet frame is hinged to the rear end of the connecting plate, and the wire inlet and outlet guide wheel is mounted at the tail end of the wire inlet frame through the mounting frame.

[0042] Combined with the above technical solutions, the diamond wire exits from the wire take-up and pay-off bin, passes through the wire inlet and outlet device arranged at the rear end of the connecting plate, and is repeatedly wound on the cutting mechanism through the reversing winding mechanism to form a square-shaped cutting wire net, so as to achieve the purpose of multi-wire cutting with a single diamond wire. The wire inlet and outlet device changes the incoming direction of the diamond wire, making the incoming of the diamond wire more stable.

[0043] As a further preferred embodiment, the slot-changing and correction mechanism includes a sliding device and an adjusting device. The cutting head frame is slidably mounted on the lower end of the connecting plate via the sliding device. An adjusting device is fixedly connected to one side of the cutting head frame and the connecting plate. The adjusting device includes an adjusting shaft seat, an adjusting screw, an adjusting shim, and a fixing block. The adjusting shaft seat is fixedly mounted on one side of the cutting head frame. One end of the adjusting screw is fixed to the fixing block, and the other end is fixed to an adjusting column. The adjusting shim can be inserted between the adjusting column and the fixing block. The adjusting column and the adjusting screw can lock the adjusting shaft seat and the fixing block. In actual use, the center of the diamond wire mesh will shift each time the slot is changed. During the adjustment process, first rotate the adjusting column to separate the adjusting shaft seat and the fixing block, insert or pull out the adjusting shim to keep the diamond wire in a horizontal state in the slot, preventing the center of the wire mesh from shifting and causing damage to the equipment. Then rotate the adjusting column to lock the adjusting shaft seat and the fixing block. Simply rotating the adjusting column and inserting or pulling out the corresponding adjusting shim is enough to move the diamond wire from the original slot to the new slot. Its cable tray function is simple to operate and can correct the center of the cable network when changing trays.

[0044] In a further preferred embodiment, the sliding device includes a linear track and a linear bearing. The linear track is disposed on the upper end of the cutting head frame, and the linear bearing is slidably mounted on the linear track. The upper end of the linear bearing is fixedly connected to the connecting plate. By using the linear track and linear bearing, the direct friction between the cutting head frame and the connecting plate is converted into rolling friction between the linear track and the linear bearing, reducing the coefficient of friction and extending the service life of the equipment.

[0045] As a further preferred embodiment, the upper end of the adjusting shaft seat is provided with a "U"-shaped groove, and the adjusting screw is disposed within the "U"-shaped groove. The adjusting screw is further fixed by the "U"-shaped groove.

[0046] As a further preferred embodiment, the adjusting shim is inverted "U" shaped, and its thickness is the distance of one slot interval on the roller. Since the shim thickness is the same as the slot interval on the roller, a corresponding number of adjusting shims are inserted or removed each time a slot is changed, based on the actual slot position. This ensures high positioning accuracy during slot changing, keeping the diamond wire always relatively horizontal with the slot. This avoids the need for manual correction of the wire mesh center after each slot change, thus improving work efficiency.

[0047] As a further preferred embodiment, the adjusting shims are provided in five sets.

[0048] As a further preferred embodiment, a waterproof bellows cover is connected between the cutting head frame and the connecting plate. The waterproof bellows cover effectively prevents cutting coolant and debris generated during the cutting process from being thrown into the cutting head by the high-speed moving wire mesh, thus preventing structural damage.

[0049] During the slot-changing process, the adjustment device is adjusted to make the cutting head skeleton move relative to the connecting plate. Each movement is equal to the width of one or more slots. The operation is simple and the slot-changing positioning accuracy is high, which improves work efficiency and reduces the risk of mechanical injury.

[0050] As a further preferred embodiment, the two sets of split-type winding wheel mechanisms located at the bottom are equipped with a crystal rod edge anti-drop device. By adding the crystal rod edge anti-drop device, the edge material is prevented from falling and hitting the diamond wire during the cutting process, causing wire breakage, thereby improving the stability of the equipment during operation and increasing work efficiency.

[0051] As a further preferred embodiment, the upper end of the reversing winding mechanism is also provided with a tension adjustment mechanism. By adjusting the tension mechanism, the tension inside the diamond wire mesh is balanced, the additional tension is reduced, the breakage rate is lowered, and the maximum cutting tension and cutting speed of the diamond wire are increased.

[0052] As a further preferred embodiment, the front end of the cutting head skeleton is also provided with a lubrication and cooling device. The lubrication and cooling device is arranged in a "U" shape inside the split winding wheel mechanism, and spray nozzles are evenly spaced on the device. This device effectively reduces the temperature of the diamond wire mesh, washes away chips generated during cutting, extends the service life of the diamond wire, and improves cutting accuracy.

[0053] The wire winding mechanism for wire EDM of the present invention includes a cutting frame, a split-type winding wheel mechanism, and a reversing mechanism. The split-type winding wheel mechanism comprises four sets, arranged in a "U" shape at the front end of the cutting frame. The reversing mechanism is located at the rear end of the cutting frame. The present invention incorporates an anti-cutting edge sheath falling device on the bottom split-type winding wheel mechanism to prevent edge sheath from falling and hitting the diamond wire during the cutting process, thus preventing wire breakage and improving equipment stability and work efficiency. A groove correction mechanism is provided on the cutting head, simplifying groove changing operations and ensuring high positioning accuracy, thereby improving work efficiency while reducing the risk of mechanical injury.

[0054] The split-type winding wheel mechanism of the present invention includes: a drive shaft, a driven shaft, a flexible coupling, a servo drive motor, a drive roller, and a driven roller. Both the drive shaft and the driven shaft are equipped with bushing housings. One end of the flexible coupling is sleeved on the drive shaft, and the other end is sleeved on the servo drive motor. The drive roller is connected to the drive shaft via a right-side tooth, and the driven roller is connected to the driven shaft via a left-side tooth. Both the right-side and left-side teeth include working tooth surfaces and non-working end faces. The rollers of this invention are mounted on the rotating shaft via end-face teeth, allowing for easy separation during disassembly and maintenance by simply rotating them, thus improving work efficiency. Because the drive roller and driven roller rotate in opposite directions, their cutting forces cancel each other out, minimizing vibration of the workpiece.

[0055] The reversing winding mechanism of the present invention includes a cutting head frame, a reversing support column is provided behind the cutting head frame, a reversing support is mounted on the reversing support column, the reversing support has a stepped mounting surface, a fixing frame is hinged to the stepped mounting surface, a reversing guide wheel is mounted on the fixing frame, the reversing guide wheel includes an aluminum disc fixing shaft, the aluminum disc is mounted on the fixing shaft, the fixing shaft is mounted through the fixing frame and has an angle adjustment device at its tail end. The present invention uses a single diamond wire to wind around the cutting mechanism to form a "U"-shaped cutting wire mesh, achieving the purpose of multi-wire cutting; the winding mechanism achieves staggered installation of the reversing guide wheel on the reversing support through different stepped surfaces, preventing mutual interference between the reversing guide wheels when winding the diamond wire, and allowing wire threading without bypassing the guide wheel support, thus improving the efficiency of wire threading.

[0056] The slot-changing and correction mechanism of the present invention includes: a cutting head frame, a connecting plate, and a sliding device, wherein the cutting head frame... The cutting head frame is slidably mounted on the lower end of the connecting plate via the sliding device. An adjustment device is fixedly connected to one side of the cutting head frame and the connecting plate. The adjustment device includes an adjustment shaft seat, an adjustment screw, an adjustment shim, and a fixing block. The adjustment shaft seat is fixedly mounted on one side of the cutting head frame. One end of the adjustment screw is fixed to the fixing block, and the other end is fixed to an adjustment column. The adjustment shim can be inserted between the adjustment nut and the fixing block. This invention allows for the movement of diamond wire from its original slot to another slot simply by rotating the adjustment column and inserting or removing the corresponding adjustment shim. The operation is simple, and the slot-changing positioning accuracy is high, improving work efficiency while reducing the risk of mechanical injury.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A wire winding mechanism for wire cutting, characterized in that: comprises a cutting head frame (D1), a split wire reel mechanism (D2) and a reversing wire winding mechanism (D3); There are four sets of the split wire reel mechanism (D2) in total, and the four sets of split wire reel mechanisms (D2) are arranged at the front end of the cutting head frame (D1) in a "mouth"-shaped layout; The reversing wire winding mechanism (D3) is arranged at the rear end of the cutting head frame (D1); A slot changing and deviation correcting mechanism (D4) is further arranged at the upper end of the cutting head frame (D1); The two sets of split wire reel mechanisms (D2) located at the bottom are provided with an ingot edge skin drop prevention device (D24); The split wire reel mechanism (D2) comprises: a driving shaft (201), a driven shaft (202), an elastic coupling (203), a servo drive motor (204), a driving roller wheel (205) and a driven roller wheel (206), a shaft sleeve box (207) is mounted on each of the driving shaft (201) and the driven shaft (202), one end of the elastic coupling (203) is sleeved on the driving shaft (201), the other end is sleeved on the servo drive motor (204), the driving roller wheel (205) is connected to the driving shaft (201) through a right end face tooth (2051), the driven roller wheel (206) is connected to the driven shaft (202) through a left end face tooth (2061), and each of the right end face tooth (2051) and the left end face tooth (2061) comprises a working tooth surface (20511) and a non-working end face (20512); Each of the right end face tooth (2051) and the left end face tooth (2061) is provided with a locking device (208), and the locking device (208) comprises a locking bolt (2081) and a threaded through hole (2082); A bearing cavity (2071) is arranged inside the shaft sleeve box (207), an angular contact bearing (2072) is mounted in the bearing cavity (2071), the inner ring of the angular contact bearing (2072) is in close fit with the driving shaft (201), and the outer ring of the angular contact bearing (2072) is in close fit with the bearing cavity (2071); There are two sets of the angular contact bearings (2072), including an inner angular contact bearing (20721) and an outer angular contact bearing (20722); A bushing (2073) is arranged between the two sets of angular contact bearings (2072); A locking nut (2074) is fixed on the outer side of the outer angular contact bearing (20722) in a threaded manner; The reversing winding mechanism (D3) includes a connecting plate (301), a reversing bracket column (302) is provided behind the connecting plate (301), a reversing bracket (303) is installed on the reversing bracket column (302), the reversing bracket (303) is provided with a stepped mounting surface (3031), a fixed frame (3032) is hinged on the stepped mounting surface (3031), a reversing guide wheel (304) is installed on the fixed frame, the reversing guide wheel (304) includes an aluminum disc (3041) and a fixed shaft (3042), the aluminum disc (3041) is installed on the fixed shaft (3042), a deep groove ball bearing is installed between the aluminum disc (3041) and the fixed shaft (3042), the fixed shaft (3042) is installed through the fixed frame (3032) and an angle adjustment device (30421) is provided at its tail end; The reversing bracket (303) is provided with multiple stepped mounting surfaces (3031), and each stepped mounting surface is provided with a reversing guide wheel (304). The direction of the reversing guide wheel (304) is perpendicular to the tangential direction of the cutting wheel, and the reversing guide wheel (304) in each group is two degrees apart. The connecting plate (301) is also provided with a cable entry / exit device (305) at its rear end. The cable entry / exit device (305) includes a cable entry frame (3051), a mounting frame (3052), and cable entry / exit guide wheels (3053). The cable entry frame (3051) is hinged to the rear end of the connecting plate (301), and the cable entry / exit guide wheels (3053) are mounted on the tail end of the cable entry frame (3051) through the mounting frame (3052). The slot-changing and correction mechanism (D4) includes a sliding device (403) and an adjusting device (404); the cutting head frame (D1) is slidably disposed at the lower end of the connecting plate (301) via the sliding device (403), and the adjusting device (404) is fixedly connected to one side of the cutting head frame (D1) and the connecting plate (301). The adjusting device includes: an adjusting shaft seat (4041), an adjusting screw (4042), an adjusting shim (4043), and a fixing block (4044). The adjusting shaft seat (4041) is fixedly installed on one side of the cutting head frame (D1). One end of the adjusting screw (4042) is fixed on the fixing block (4044), and the other end is fixed with an adjusting column (4045). The adjusting shim (4043) can be inserted between the adjusting column (4045) and the fixing block (4044). The adjusting column (4045) and the adjusting screw (4042) can lock the adjusting shaft seat (4041) and the fixing block (4044). The sliding device includes a linear track (4031) and a linear bearing (4032). The linear track (4031) is disposed on the upper end of the cutting head frame (D1), and the linear bearing (4032) is slidably disposed on the linear track (4031). The upper end of the linear bearing is fixedly connected to the connecting plate (301). The upper end of the adjusting shaft seat is provided with a U-shaped groove (40411), and the adjusting screw rod (4042) is arranged in the U-shaped groove (40411); The adjusting shim (4043) is of an inverted U shape, and the thickness of the adjusting shim (4043) is equal to the distance of one wire groove interval on the driving roller wheel or the driven roller wheel.

2. The wire winding mechanism for wire cutting according to claim 1, characterized in that: A rubber wheel (3043) is sleeved on the outer surface of the aluminum disc (3041), the rubber wheel (3043) is in close contact with the aluminum disc (3041), and the material of the rubber wheel (3043) is polyurethane.

3. The wire winding mechanism for wire cutting according to claim 1, characterized in that: Four sets of the reversing support columns (302) are provided in total, and two sets of reversing supports (303) are arranged on each set of the reversing support columns (302).

4. The wire winding mechanism for wire cutting according to claim 1, characterized in that: Five sets of the adjusting shims (4043) are provided in total.

5. The wire winding mechanism for wire cutting according to claim 1, characterized in that: A waterproof organ cover (405) is connected between the cutting head framework (D1) and the connecting plate (301).

6. The wire winding mechanism for wire cutting according to claim 1, characterized in that: The shaft sleeve box (207) is provided with a threaded hole (2075), a bearing gland (2076) is arranged on the outer side of the shaft sleeve box (207), and the bearing gland (2076) and the threaded hole (2075) are connected and fixed by a bolt.

7. The wire winding mechanism for wire cutting according to claim 1, characterized in that: A waterproof sealing ring (2077) is further arranged on the inner side of the shaft sleeve box (207).

8. The wire winding mechanism for wire cutting according to claim 1, characterized in that: The upper end of the reversing winding mechanism (D3) is further provided with an adjusting tension force mechanism (D5).

9. The wire winding mechanism for wire cutting according to claim 1, characterized in that: The front end of the cutting head framework (D1) is further provided with a lubricating and cooling device (D6), the lubricating and cooling device (D6) is arranged in a square-shaped layout on the inner side of the split winding wheel mechanism (D2), and spray nozzles are arranged on the lubricating and cooling device (D6) at equal intervals.

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