A double-station wire saw structure

Abstract

The present invention discloses a double-station wire saw structure, in which a lifting mechanism drives the lifting frame to rise and fall vertically; a spring guide structure is installed on the lifting frame, and a roller in the spring guide structure elastically rolls with the outer wall of the lifting mechanism; a driving wheel assembly and a tensioning wheel assembly are respectively installed at both ends of the lifting frame, and a rope pressing mechanism is installed under the lifting frame; there are more than two groups of driving wheel assemblies and tensioning wheel assemblies at the same end and they are transmitted synchronously; the structure has a different method for cutting sheet materials from the traditional scheme. In the traditional scheme, the sheet materials lie on a conveying platform and are transported to the wire saw and the sawing machine, resulting in a large area occupied by the equipment. In this scheme, the sheet materials are stood up and then cut, and the area occupied by the double-station structure can be reduced to 1 / 4 of the original structure.

Description

Technical Field

[0001] The invention relates to the technical field of stone machinery, in particular to a double-station wire saw structure. Background Art

[0002] At present, the equipment for cutting luxury stones in the stone industry is mainly rope saws and saw blade cutting machines. Wire saws are gradually accepted by the public due to their small wire diameter, which brings small cutting volume, small loss, higher material yield, and smaller cutting dust. At present, the tensioning structure of wire saws is mainly servo tensioning, heavy hammer tensioning, and hydraulic tensioning.

[0003] The tensioning structure of existing equipment is very rigid and cannot absorb the vibration of the gear train during operation. Ultimately, the vibration force acts on the wire, causing the diamond wire to vibrate during the cutting process, affecting the cutting accuracy and wire life. The servo system and hydraulic system structures are expensive, and the heavy hammer structure is limited by the space size and cannot be used on equipment with high tension.

[0004] During the cutting process, the amount of cutting is constant. Stones often contain minerals of different compositions with different hardness. When encountering minerals with high hardness, the actual tension of the rope will increase. At this time, the tensioning structure with fixed tension (such as a heavy hammer) will cause the actual tension of the equipment to exceed the ideal value, thereby reducing the life of the diamond wire.

[0005] Because the width of the stone will change, and the position of the driving wheel and the tensioning wheel cannot be adjusted too much inward, when the stone is small, the rope will bend more during cutting, affecting the cutting efficiency. The current solution is to use a rope pressing mechanism to solve this problem. A rope pressing mechanism is added to the inside of the driving wheel and the tensioning wheel to reduce the rope bending during cutting. Currently, most of the rope pressing mechanisms on the market use a linear rail plus a screw slide structure, which is also heavy, increasing the load on the lifting mechanism and its own processing cost.

[0006] During the cutting process, the dynamic balance of the wire saw equipment is destroyed when the wheels are contaminated with waste, causing vibration of the wheel system. The vibration is transmitted to the lifting frame and finally to the guide structure connecting the lifting frame and the main body. The guide mechanism currently on the market has a large connection rigidity and the vibration cannot be absorbed. It eventually acts on the diamond bead rope or diamond wire with the weakest rigidity, which will cause the rope and wire to shake, affecting the cutting accuracy and life.

[0007] In addition, the traditional wire saw adopts a double-column structure, and the cutting direction of the stone is horizontal, resulting in a large footprint of the overall equipment. Summary of the Invention

[0008] The object of the present invention is to provide a dual-station wire saw structure to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A double-station wire saw structure, comprising:

[0011] A lifting mechanism, wherein the lifting mechanism drives the lifting frame to vertically move up and down;

[0012] A spring guide structure, the spring guide structure is mounted on the lifting frame, and the roller in the spring guide structure is elastically rolling-fitted with the outer wall of the lifting mechanism;

[0013] A driving wheel assembly and a tensioning wheel assembly are respectively installed at both ends of the lifting frame, and a rope pressing mechanism is installed below the lifting frame;

[0014] There are more than two sets of driving wheel assemblies and tensioning wheel assemblies at the same end, and they are driven synchronously.

[0015] Preferably, the tension wheel assembly moves on the lifting frame through a sliding assembly; and further comprises:

[0016] A spring seat, the spring seat is connected to the tension wheel assembly through a tension sensor, and two groups of buffer springs are sleeved on the outer side of the spring seat;

[0017] A tensioning cylinder, wherein a connecting plate is installed at the output end of the tensioning cylinder, and the connecting plate is located between the two groups of buffer springs;

[0018] The control unit is used to receive the signal value of the tension sensor and compare it with a preset value, and output the comparison result to control the tensioning cylinder to extend and retract.

[0019] Preferably, the sliding assembly includes a seat plate, a guide mechanism and a tensioning slide, the tensioning wheel assembly is installed on the tensioning slide, the seat plate is relatively fixed, and the tensioning slide is linearly slidably engaged on the seat plate through the guide mechanism.

[0020] Preferably, the tensioning cylinder and the seat plate are both fixed to the lifting frame, and further include a guide mechanism, which guides the connecting plate to move linearly.

[0021] Preferably, it also includes an air source, a proportional valve, a reversing valve and a throttle valve connected in sequence, and the throttle valve has two groups connected to the air inlet and the air outlet of the tensioning cylinder respectively, and the other ends of the two groups of throttle valves are respectively connected to the two output ends of the reversing valve; a filter assembly is arranged between the air source and the proportional valve.

[0022] Preferably, the spring guide structure includes:

[0023] A fixing plate, the fixing plate being fixedly mounted on the lifting frame;

[0024] A guide wheel connecting plate, wherein a roller is mounted on the side of the guide wheel connecting plate facing away from the fixed plate, and the roller is in rolling engagement with the outer side wall of the casing of the lifting mechanism;

[0025] A pressure adjustment plate, the pressure adjustment plate being arranged between the guide wheel connecting plate and the fixed plate;

[0026] A shock-absorbing spring, with both ends of the shock-absorbing spring connected to the guide wheel connecting plate and the pressure adjusting plate respectively;

[0027] An adjusting screw for adjusting the spacing is provided between the pressure adjusting plate and the fixed plate;

[0028] The fixed plate is provided with a fixed guide rod which passes through the guide wheel connecting plate and faces away from the pressure adjustment plate.

[0029] Preferably, the adjusting screw is threadedly connected to the fixing plate, and one end of the adjusting screw is abutted against one side of the pressure adjustment plate.

[0030] Preferably, a through hole is provided on the guide wheel connecting plate for the fixed guide rod to pass through, the outer diameter of the fixed guide rod is smaller than the inner diameter of the through hole, and an anti-slip portion with an outer diameter larger than the inner diameter of the through hole is provided at one end of the fixed guide rod away from the pressure adjustment plate.

[0031] Preferably, the rope pressing mechanism includes:

[0032] A linear rail assembly, wherein the linear rail assembly is fixedly mounted on the lifting frame;

[0033] A slide plate, which slides linearly on the linear rail assembly and is fixed at any position of the linear rail assembly through a quick-change pressure block;

[0034] A wire pressing guide wheel is used for the cutting wire to pass around, and the wire pressing guide wheel is mounted on a guide wheel seat shaft, and the guide wheel seat shaft slides along the axis direction of the wire pressing guide wheel and is fixed on the adjustment clamping block;

[0035] The adjustment clamp is installed on the slide plate, and the moving direction of the guide wheel seat shaft is perpendicular to the moving direction of the slide plate.

[0036] Preferably, limit blocks are installed at both ends of the linear rail assembly, and rubber buffer blocks are provided on the sides of the two groups of limit blocks close to each other.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] This structure's cutting method for sheet metal is different from the traditional solution. In the traditional solution, the sheet metal lies on a conveyor platform and is transported to the wire saw and sawing machine, resulting in a large equipment footprint. This solution stands the sheet metal upright before cutting, and the double-station structure can reduce the footprint to 1 / 4 of the original structure.

[0039] Closed-loop control of the tensioning force ensures ideal cutting performance under all operating conditions. A spring controls the tension curve, softening it. The flexible tension structure absorbs vibrations and ensures stability, improving cutting accuracy and diamond wire life. Pneumatic control offers cost advantages over existing industry control methods. A pull ring is integrated at the end of the spring seat for calibrating the tension sensor, resulting in a compact and highly integrated design.

[0040] The pressure sensor and proportional valve work together to form a tension closed-loop control system to ensure constant pressure during equipment operation. The buffer spring is used to control the pressure curve to buffer and absorb the vibration of the rope saw.

[0041] The use of shock-absorbing springs in the guide structure can adjust the contact pressure between the roller and the outer wall of the lifting mechanism and absorb the vibration during the wire saw cutting process;

[0042] The pressure of the shock-absorbing spring can be adjusted, so the stiffness of the guide mechanism can be adjusted. Since the spring travel does not have high requirements on the matching surface of the guide wheel, the matching surface has an inclination within a certain range. Under the automatic adjustment of the shock-absorbing spring, the roller can also stick to the outer wall of the lifting mechanism. Compared with the traditional structure, the guide wheel working surface requires additional processing, which has economic advantages.

[0043] The quick-change locking structure is convenient for workers to operate. The front and rear adjustment accuracy of the guide wheel is higher than that of the existing structure on the market. The cost is about 30% of the existing structure on the market, which has a great economic advantage.

[0044] Use the linear rail assembly as the track, lock the adjustment clamp on the slide, and cooperate with the quick locking structure to adjust the left and right and front and back positions of the rope pressing mechanism's pressure wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 This is a three-dimensional schematic diagram of the first direction of the present invention;

[0047] Figure 2 This is a perspective schematic diagram of the second direction of the present invention;

[0048] Figure 3 for Figure 2 A partial cross-sectional view of

[0049] Figure 4 This is a schematic diagram of the three-dimensional structure of the tensioning wheel assembly of the present invention;

[0050] Figure 5 A top view of the tensioning wheel assembly of the present invention;

[0051] Figure 6 The tensioning wheel assembly of the present invention adopts a proportional valve solution;

[0052] Figure 7 The tension wheel assembly of the present invention adopts a pressure reducing valve solution;

[0053] Figure 8 This is a schematic diagram of flexible tension control of the present invention;

[0054] Figure 9 This is a schematic diagram of rigid tension control of the present invention;

[0055] Figure 10 This is a schematic diagram of the spring guide structure of the present invention;

[0056] Figure 11 Schematic diagram of the rope pressing mechanism of the present invention.

[0057] 100, lifting mechanism; 200, spring guide structure; 300, lifting frame; 400, tensioning wheel assembly; 500, rope pressing mechanism; 600, sheet material; 700, driving wheel assembly;

[0058] 8. Slider; 9. Driving wheel; 10. Wheel seat; 11. Bearing; 12. Coupling; 13. Reversing reducer; 14. Main motor;

[0059] 28. Roller; 29. Guide wheel connecting plate; 210. Fixed guide rod; 211. Shock-absorbing spring; 212. Pressure adjustment plate; 213. Fixed plate; 214. Adjusting screw;

[0060] 41. Tensioning cylinder; 42. Throttle valve; 43. Reversing valve; 44. Proportional valve; 45. Filter assembly; 46. Air source; 47. Pressure reducing valve; 49. Tensioning slide; 410. Tension sensor; 411. Buffer spring; 412. Connecting plate; 413. Spring seat; 414. Second guide mechanism; 415. First guide mechanism; 416. Seat plate;

[0061] 58. Guide wheel; 59. Guide wheel seat shaft; 510. Linear rail assembly; 511. Limit block; 512. Adjustment clamp; 513. Quick change pressure block; 514. Slide plate. DETAILED DESCRIPTION

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0063] Example 1:

[0064] like Figure 1 As shown, the lifting mechanism 100 is installed on the column. The lifting mechanism 100 can adopt a screw transmission structure. The lifting frame 300 is horizontally arranged and fixed on the slide in the screw transmission structure, so that the lifting mechanism 100 drives the lifting frame 300 to move vertically up and down; a pair of driving wheel assemblies 700 are hung on the left side of the lifting frame 300, and a pair of tensioning wheel assemblies 400 are hung on the right side. A pair of pressing rope mechanisms 500 are hung below the lifting frame 300. When working, a cutting wire saw is hung on the driving wheel assembly 700 and the tensioning wheel assembly 400, and the wire passes through the pressing rope mechanism 500. The sheet material 600 is vertically in place, and the lifting mechanism 100 drives the lifting frame 300 to move up and down to cut the sheet material 600.

[0065] A pair of driving wheel assemblies 700 on the left side of the lifting frame 300 share a motor to achieve synchronous drive;

[0066] A pair of tension wheel assemblies 400 on the right side of the lifting frame 300 share a motor to achieve synchronous driving.

[0067] Example 2: Contains all the contents of Example 1;

[0068] like Figure 10 As shown, the spring guide structure 200 has two groups respectively cooperating with the two opposite outer side walls of the lifting mechanism 1 / column. The spring guide structure 200 includes a roller 28, a guide wheel connecting plate 29, a fixed guide rod 210, a shock absorbing spring 211 (compression spring), a pressure adjustment plate 212, a fixed plate 213 and an adjusting screw 214;

[0069] The fixing plate 213 is fixed to the lifting frame 300; the pressure adjustment plate 212 is located between the fixing plate 213 and the guide wheel connecting plate 29, and the adjusting screw 214 is threadedly connected to the fixing plate 213. Under the reverse elastic force of the shock-absorbing spring 211, the right end of the adjusting screw 214 abuts against the left side wall of the pressure adjustment plate 212; the adjusting screw 214 is rotated and moved along its axial direction to adjust the distance between the pressure adjustment plate 212 and the fixing plate 213, thereby adjusting the elastic force of the shock-absorbing spring 211;

[0070] The left end of the fixed guide rod 210 is fixed to the right side wall of the fixed plate 213, and the right end of the fixed guide rod 210 passes through the pressure adjustment plate 212 and the guide wheel connecting plate 29 in sequence and is provided with an anti-slip portion, which is located on the right side of the guide wheel connecting plate 29; the guide wheel connecting plate 29 is provided with a through hole for the fixed guide rod 210 to pass through. The outer diameter of the fixed guide rod 210 is slightly smaller than the inner diameter of the through hole, and the outer diameter of the anti-slip portion is larger than the inner diameter of the through hole, so that the release portion cannot pass through the through hole.

[0071] The outer diameter of the fixed guide rod 210 is smaller than the inner diameter of the through hole, which is conducive to the relative shaking of the guide wheel connecting plate 29 up and down and left and right, thereby adapting to vibrations in all directions during the wire saw cutting process.

[0072] The shock-absorbing spring 211 is sleeved on the outer wall of the fixed guide rod 210 and is located between the guide wheel connecting plate 29 and the pressure adjustment plate 212 .

[0073] The upper and lower parts of the right side of the guide wheel connecting plate 29 are rotatably connected to the roller 28. Under the elastic force of the shock-absorbing spring 211, the roller 28 is in contact with the outer wall / column side of the lifting mechanism 1. When the lifting mechanism 100 drives the lifting frame 300 to move vertically, the roller 28 rolls relative to the outer wall / column side of the lifting mechanism 1 to achieve auxiliary guidance.

[0074] It should be noted that the anti-slip portion at the right end of the fixed guide rod 210 will not come into contact with the outer side wall / column side of the lifting mechanism 1.

[0075] A pair of spring guide structures 200 are added. Since the wheel system will stick to waste materials during the cutting process, affecting the dynamic balance of the equipment and causing the equipment to shake, the shock-absorbing spring 211 in the spring guide structure 200 can absorb the shaking of the equipment during the cutting process, and the stiffness of the shock-absorbing spring 211 can be adjusted to facilitate the control of the pressure between the roller 28 and the column.

[0076] Example 3: Contains all the contents of Example 2;

[0077] The installation position of the right side rope pressing mechanism 500 is as follows Figure 1 As shown, it is located near the left side of the tensioning wheel assembly 400, and the installation position of another set of rope pressing mechanisms 500 on the left side is as shown. Figure 1 As shown, the rope pressing mechanism 500 is located near the right side of the driving wheel assembly 700 and includes a wire pressing guide wheel 58, a guide wheel seat shaft 59, a linear rail assembly 510, a limit block 511, an adjustment clamping block 512, a quick-change pressure block 513, and a slide plate 514;

[0078] The linear rail assembly 510 is fixed to the lifting frame 300, and the length direction of the linear rail assembly 510 is consistent with the length direction of the lifting frame 3; quick-change pressure blocks 513 are installed at the front and rear ends of the slide plate 514, and the quick-change pressure blocks 513 move left and right in a straight line on the corresponding linear rail assembly 510, thereby realizing the left and right movement of the slide plate 514 along the length direction of the linear rail assembly 510 / lifting frame 300 to adjust the position, and then clamped and fixed by the clamping handle of the quick-change pressure block 513, so that the slide plate 514 is fixed relative to the linear rail assembly 510 / lifting frame 3.

[0079] The lifting frame 300 is provided with a scale corresponding to the position of the linear rail assembly 510, so that the left and right movement distance of the slide plate 514 can be determined.

[0080] The quick-change pressure block 513 includes a slider and a clamping handle. The slider is fixed to the slide plate 514. The slider and the linear rail assembly 510 slide in a straight line. The clamping handle is threadedly installed on the slider. The clamping handle is rotated so that one end of the clamping handle abuts against the linear rail assembly 510 to clamp the slider to any position of the linear rail assembly 510.

[0081] Alternatively, the quick-change pressure block 513 includes a slider, a bottom block, a friction block and a clamping handle, the slider and the bottom block are fixed on the slide plate 514, the slider and the bottom block are both slidingly matched with the linear rail assembly 510, the clamping handle is threadedly connected to the bottom block and one end is movably connected to the friction block, the friction block slides on the bottom block, and the rotating clamping handle drives the friction block to move closer to or away from the linear rail assembly 510 along the length direction of the vertical linear rail assembly 510 under the guidance of the bottom block; the friction coefficient of the friction block is relatively large, so that the linear rail assembly 510 and the bottom block are clamped and fixed.

[0082] A plurality of adjustment clamps 512 are installed at the bottom of the slide plate 514. The guide wheel seat shaft 59 is a rotating body structure, so that the guide wheel seat shaft 59 can be rotatably connected to the adjustment clamps 512; and the guide wheel seat shaft 59 can move forward and backward along its axis relative to the adjustment clamps 512. The adjustment clamps 512 have automatic clamping screws, and the rotating clamping screws abut against the guide wheel seat shaft 59 to fix the guide wheel seat shaft 59 relative to the adjustment clamps 512.

[0083] The wire pressing guide wheel 58 is rotatably / fixedly connected to the end of the coaxial guide wheel seat shaft 59. The forward and backward movement direction of the guide wheel seat shaft 59 relative to the slide plate 514 and the left and right movement direction of the slide plate 514 relative to the linear rail assembly 510 are perpendicular to each other.

[0084] The guide wheel seat shaft 59 is provided with a scale along its axis, which is helpful for judging the forward and backward movement distance of the guide wheel seat shaft 9.

[0085] Limit blocks 511 are installed at both ends of the linear rail assembly 510, which prevent the quick-change clamp 13 from separating from the linear rail assembly 510; rubber buffer blocks are provided on the side where the two groups of limit blocks 511 are close to each other, and the rubber buffer blocks can reduce the impact force between the limit blocks 511 and the quick-change clamp 13.

[0086] Two rope-holding mechanisms 500 are also incorporated into the two large wheels. Because the width of the stone being cut varies, without these mechanisms, when cutting small slabs, the large wheels would be too far from the stone, reducing rope stiffness at the cutting point, leading to significant rope bending and reduced cutting efficiency. The two rope-holding guide wheels 58 in the rope-holding mechanisms 500 can slide left and right, adjusting their position according to the stone's width. The front-to-back position of the guide wheels 58 can also be adjusted, allowing them to be retracted when cutting large slabs to increase the cutting range. This simple rope-holding mechanism reduces costs by 70% compared to existing rope-holding mechanisms, offering significant cost advantages.

[0087] Example 4: includes all the contents of Example 3;

[0088] The driving wheel assembly 700 is as follows Figure 2-3 As shown, the driving wheel assembly 700 includes a slider 8, a driving wheel 9, a wheel base 10, a bearing 11, a coupling 12, a reversing reducer 13, and a main motor 14. The main motor 14 drives the reversing reducer 13, which drives the driving wheel 9 through the coupling 12 to drive the diamond wire to cut the stone. Two bearings 11 are installed at the head and tail ends of the wheel base 10, which facilitate the rotation of the driving wheel 9.

[0089] Example 5: Contains all the contents of Example 4;

[0090] The tension wheel assembly 400 is as follows Figure 4-9 As shown, the seat plate 416 is fixed to the lifting frame 300, the tensioning cylinder 41 is installed on the seat plate 416, the first guide mechanism 415 includes a guide rail and a slider, the guide rail is fixed to the seat plate 416, the tensioning slide 49 is fixed to the slider, and the tensioning wheel assembly 400 is fixed / rotated on the tensioning slide 49, so that the tensioning slide 49 slides linearly left and right on the seat plate 416 through the first guide mechanism 415; the moving direction of the tensioning slide 49 and the extension and contraction direction of the tensioning cylinder 41 are both consistent with the length direction of the lifting frame 300;

[0091] A tension sensor 410 is installed on the traction side of the tensioning slide 49. A spring seat 413 is installed on the tension sensor 410 in the traction direction. Two buffer springs 411 are passed through the outer side of the spring seat 413. A connecting plate 412 is sandwiched between the two buffer springs 411. The moving end of the tensioning cylinder 41 is connected to the connecting plate 412.

[0092] The tensioning cylinder 41 and spring seat 413 are connected by a connecting plate 412, which is interposed with a second guide mechanism 414 for auxiliary guidance. The second guide mechanism 414 comprises a guide rod and a guide seat that slide in a linear manner. The guide rod is fixed to the seat plate 416, and the guide seat is fixed to the connecting plate 412. The extension and contraction direction of the tensioning cylinder 41 is consistent with the movement direction of the tensioning wheel assembly 400.

[0093] The air from the air source 46 is filtered by the filter assembly 45, and then the air pressure is adjusted by the proportional valve 44. The air is then connected to the tensioning cylinder 41 through the reversing valve 43 and one of the throttle valves 42.

[0094] At the same time, the air outlet of the tensioning cylinder 41 is discharged through another throttle valve 42 and a reversing valve 43, thereby achieving a smooth control action.

[0095] Before the device is used, the tensioning mechanism needs to be calibrated with a portable scale by stretching the pull ring 13 on the spring seat to generate a tension value to calibrate the tension sensor 410;

[0096] The reversing valve 43 can be switched to alternate the flow directions of the two throttle valves 42, thereby controlling the extension and contraction of the tensioning cylinder 41. The reversing valve 43 has a center seal to stop the extension and contraction of the tensioning cylinder 41;

[0097] During operation, the tensioning wheel assembly 400 is hung with diamond wire, and the tensioning cylinder 41 drives the connecting plate 412 to move rightward. During the movement, the second guide mechanism 414 plays a guiding role. The connecting plate 412 squeezes the buffer spring 411 on the right side, thereby driving the spring seat 413 to move rightward. The spring seat 413 transmits the tension to the tension sensor 410. The tension sensor 410 drives the tensioning wheel assembly 400 to move rightward. During this process, the first guide mechanism 415 plays a guiding role. After the tension sensor 410 reaches the value preset in the control unit, the pressure of the tensioning cylinder 41 remains constant.

[0098] The pressure of the tensioning cylinder 41 is controlled by a proportional valve 44. During the cutting process, the pressure sensor 10 provides real-time feedback on the tensioning force, which is adjusted in conjunction with the proportional valve 44 to maintain the tensioning force of the device at a certain value. The buffer spring 411 is used to absorb the vibration of the tensioning wheel assembly 400 during operation, ensuring smooth operation of the device, and controlling the tension curve, ensuring smooth control, and providing a buffering effect during the tensioning process.

[0099] During operation, the tension may fluctuate, which can be fed back in real time through the tension sensor 410 and then adjusted through the proportional valve 44 to keep the tension within the ideal range;

[0100] When changing the rope, the tensioning cylinder 41 is retracted, and the piston end moves to the left, driving the connecting plate 412 to move to the left. The connecting plate 412 squeezes the buffer spring 411 on the left side to the left, pushing the spring seat 413 to the left. The spring seat 413 pushes the tension sensor 410 to the left. The tension sensor 410 pushes the tensioning slide 49 to the left, thereby pushing the tensioning wheel assembly 400 to move to the left, entering the rope changing state;

[0101] The throttle valve 42 adopts an exhaust throttle valve; the reversing valve 43 adopts a five-position three-way center-sealed solenoid valve; the filter assembly 45 adopts a filter triplex;

[0102] like Figure 8 、 9 The figure shows the tension fluctuation diagrams in the flexible tension control system and the rigid tension control system in the dynamic constant tension system. It can be seen that the tension curve of the flexible tension control is more stable.

[0103] The processing unit is also included, and the processing unit can be a PLC or a central processing unit; the processing unit is electrically connected to the reversing valve 43 and the tension sensor 410, and the reversing of the reversing valve 43 realizes the extension and contraction of the tensioning cylinder 41. After reaching the set position, the reversing valve 43 is in the middle position to achieve blocking;

[0104] Example 6: Contains all the contents of Example 5, except that:

[0105] The tensioning cylinder 41 can also be replaced by a hydraulic cylinder; at the same time, the air source 46 is replaced by a hydraulic oil source; and the throttle valve 42 is replaced by a hydraulic throttle valve.

[0106] If, from the perspective of economy, real-time tension feedback is not required, the proportional valve 44 can be replaced with a pressure reducing valve 47, or the tension sensor 410 can be removed at the same time to achieve the most economical configuration.

[0107] The pneumatic constant tensioning system with integrated closed-loop control can adjust the input force in real time during the cutting process to ensure constant tension in the system's cutting state. The hardness of different parts of the same stone varies. Cutting the stone with the same cutting depth will cause the tension of the diamond wire to exceed the rated tension, reducing its lifespan. Under this setting, the lifespan of the diamond wire is longer than that of traditional solutions. Currently, the constant tension solution on the market uses a servo motor solution, which costs about 2-3 times that of this solution.

[0108] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0109] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A double-station wire saw structure, characterized by: include: A lifting mechanism (100), wherein the lifting mechanism (100) drives the lifting frame (300) to vertically rise and fall; A spring guide structure (200), the spring guide structure (200) being mounted on the lifting frame (300), the roller (28) in the spring guide structure (200) being elastically rolling-fitted on the outer side wall of the lifting mechanism (100); A driving wheel assembly (700) and a tensioning wheel assembly (400) are respectively installed at both ends of the lifting frame (300), and a rope pressing mechanism (500) is installed below the lifting frame (300); There are two or more sets of the driving wheel assembly (700) and the tensioning wheel assembly (400) at the same end, and they are driven synchronously; The tension wheel assembly (400) moves on the lifting frame (300) via a sliding assembly; and further comprises: A spring seat (413), the spring seat (413) being connected to the tension wheel assembly (400) via a tension sensor (410), and two groups of buffer springs (411) being sleeved on the outer side of the spring seat (413); A tensioning cylinder (41), wherein a connecting plate (412) is installed at the output end of the tensioning cylinder (41), and the connecting plate (412) is located between two groups of buffer springs (411); a control unit, the control unit being used to receive a signal value from a tension sensor (410), compare it with a preset value, and output a comparison result to control the tensioning cylinder (41) to extend and retract; The sliding assembly includes a seat plate (416), a first guide mechanism (415) and a tensioning slide (49); the tensioning wheel assembly (400) is mounted on the tensioning slide (49); the seat plate (416) is fixed relative to the lifting frame (300); and the tensioning slide (49) linearly slides on the seat plate (416) via the first guide mechanism (415); The tensioning cylinder (41) and the seat plate (416) are both fixed to the lifting frame (300), and further include a second guide mechanism (414), wherein the second guide mechanism (414) guides the connecting plate (412) to move linearly; The spring guide structure (200) comprises: A fixing plate (213), wherein the fixing plate (213) is fixedly mounted on the lifting frame (300); A guide wheel connecting plate (29), wherein a roller (28) is mounted on a side of the guide wheel connecting plate (29) facing away from the fixed plate (213), and the roller (28) is in rolling engagement with an outer side wall of a housing of the lifting mechanism (100); a pressure adjustment plate (212), the pressure adjustment plate (212) being arranged between the guide wheel connecting plate (29) and the fixing plate (213); A shock-absorbing spring (211), wherein both ends of the shock-absorbing spring (211) are respectively connected to the guide wheel connecting plate (29) and the pressure adjustment plate (212); An adjusting screw (214) for adjusting the spacing is provided between the pressure adjustment plate (212) and the fixed plate (213); The fixed plate (213) is provided with a fixed guide rod (210) penetrating to the side of the guide wheel connecting plate (29) facing away from the pressure adjustment plate (212); The adjusting screw (214) is threadedly connected to the fixing plate (213), and one end of the adjusting screw (214) is in abutment with one side of the pressure adjustment plate (212); The guide wheel connecting plate (29) is provided with a through hole for the fixed guide rod (210) to pass through, the outer diameter of the fixed guide rod (210) is smaller than the inner diameter of the through hole, and the end of the fixed guide rod (210) away from the pressure adjustment plate (212) is provided with an anti-slip portion with an outer diameter larger than the inner diameter of the through hole; The rope pressing mechanism (500) comprises: A linear rail assembly (510), wherein the linear rail assembly (510) is fixedly mounted on the lifting frame (300); A slide plate (514), wherein the slide plate (514) slides linearly on the rail assembly (510) and is fixed at any position of the rail assembly (510) via a quick-change pressure block (513); A wire pressing guide wheel (58), the wire pressing guide wheel (58) is used for the cutting wire to pass around, the wire pressing guide wheel (58) is installed on a guide wheel seat shaft (59), and the guide wheel seat shaft (59) slides along the axis direction of the wire pressing guide wheel (58) and is fixed on the adjustment clamping block (512); The adjustment clamp (512) is mounted on the slide plate (514), and the moving direction of the guide wheel seat shaft (59) is perpendicular to the moving direction of the slide plate (514).

2. The double-station wire saw structure according to claim 1, characterized in that: It also includes an air source (46), a proportional valve (44), a reversing valve (43) and a throttle valve (42) connected in sequence, wherein the throttle valve (42) has two groups connected to the air inlet and the air outlet of the tensioning cylinder (41), and the other ends of the two groups of throttle valves (42) are respectively connected to the two output ends of the reversing valve (43); a filter assembly (45) is provided between the air source (46) and the proportional valve (44).

3. The double-station wire saw structure according to claim 1, characterized in that: Limit blocks (511) are installed at both ends of the linear rail assembly (510), and rubber buffer blocks are provided on the sides of the two sets of limit blocks (511) close to each other.

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