Multi-wire cutting machine with safety protection function

Abstract

The invention relates to the field of multi-wire cutting machines, and provides a multi-wire cutting machine with a safety protection function, the multi-wire cutting machine comprises a rack, a multi-wire cutting unit and lifting devices, and the two sides of the multi-wire cutting unit are connected with the rack through the lifting devices; the lifting device comprises a lead screw, a first driving assembly, a main nut, an auxiliary nut, a connecting piece and a displacement detection assembly. The main nut and the auxiliary nut are both in threaded connection with the lead screw, the pitch of the auxiliary nut is larger than that of the main nut, and the main nut is connected with the rack. A gap is reserved between the main nut and the auxiliary nut, one end of the connecting piece is fixedly connected with the main nut, and the other end of the connecting piece is movably connected with the auxiliary nut. The displacement detection assembly is arranged between the main nut and the auxiliary nut. The first driving assembly is arranged on the rack and connected with one end of the lead screw. The multi-wire cutting unit has the advantages that the main nut can be replaced in time according to the detected displacement, so that the multi-wire cutting unit can be prevented from falling off due to excessive abrasion of the main nut, and the use safety can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-wire cutting machines, and in particular to a multi-wire cutting machine with a safety protection function. Background Art

[0002] Diamond wire is a cutting tool made of diamond electroplated on the outer layer of metal steel wire. Diamond wire is usually used for cutting photovoltaic silicon wafers, sapphire, graphite and other materials. With the continuous development of cutting machine technology, multi-wire cutting machines using diamond wire have been used for cutting stone.

[0003] The Chinese invention patent with application number CN202410467280.0 discloses a multi-wire push-down stone cutting machine, which includes a frame and a cutting device, wherein a placement space for placing rough materials is formed at the bottom of the frame, and the cutting device is located in the frame and is lifted and lowered relative to the placement space; in the cutting device, rollers are arranged at the upper and lower ends of both sides of the lifting frame, and the diamond wire circulates around the rollers in the lifting frame, so that the diamond wire forms a plurality of parallel cutting lines below the lifting frame, and the two ends of the diamond wire are respectively connected to the retractable cylinders arranged on both sides outside the lifting frame; during operation, one of the retractable cylinders rotates forward to pull the diamond wire to rewind, while the other retractable cylinder reverses to release the diamond wire, so that the cutting lines below the lifting frame can move at a high speed; when the lifting frame descends to the placement space of the frame, the cutting lines can be pressed down at the same time to saw the rough materials at one time to form multiple pieces of stone with a thickness equal to the spacing between two adjacent cutting lines. However, the existing multi-wire cutting machine has the following defects: the lifting and lowering are achieved by the combination of screw rods and nuts, and the nuts will wear out during the operation. If they are not replaced in time after being worn to a certain extent, the entire cutting assembly may fall off, posing a safety hazard, and the entire cutting device structure is relatively complex. In view of the above problems, the applicant conducted an in-depth study on the problem, which led to the creation of this case. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a multi-wire cutting machine with a safety protection function, so as to solve the problem that the lifting and lowering of the existing multi-wire cutting machine are all achieved by the cooperation of a screw rod and a nut, and the nut will wear during the operation. If it is worn to a certain extent and is not replaced in time, it may cause the entire cutting assembly to fall off, posing a safety hazard, and there is also the problem of a relatively complex structure of the entire cutting device.

[0005] The present invention is implemented as follows: a multi-wire cutting machine with a safety protection function comprises a frame, a multi-wire cutting unit and a lifting device, both sides of the multi-wire cutting unit are connected to the frame through the lifting device; the lifting device comprises a screw rod, a first driving assembly, a main nut, a secondary nut, a connecting piece and a displacement detection assembly; The main nut and the secondary nut are both threadedly connected to the screw rod, the pitch of the secondary nut is greater than the pitch of the main nut, and the main nut is connected to the frame; a distance is left between the main nut and the secondary nut, one end of the connecting piece is fixedly connected to the main nut, and the other end of the connecting piece is movably connected to the secondary nut; the displacement detection component is arranged between the main nut and the secondary nut; the first driving component is arranged on the frame, and the first driving component is connected to one end of the screw rod.

[0006] Furthermore, the main nut is located above the secondary nut, the lead screw is a trapezoidal lead screw, the main nut is a trapezoidal copper nut, and the secondary nut is a trapezoidal nut.

[0007] Furthermore, the displacement detection assembly includes a displacement sensor and a fixing plate, the displacement sensor is connected to the side wall of the main nut, the fixing plate is connected to the side wall of the secondary nut, and the displacement sensor is located directly above the fixing plate.

[0008] Furthermore, a plurality of the connecting members are distributed at intervals around the circumferential direction between the main nut and the auxiliary nut; Each of the connecting parts includes a connecting rod and a tightening nut; a threaded hole is formed at the bottom of the main nut at a position corresponding to each connecting rod, a screw section is formed at the upper part of the connecting rod, the screw section is threadedly connected to the main nut, the tightening nut is threadedly connected to the screw section, and the tightening nut is tightened to the bottom of the main nut; a movable hole is opened on the secondary nut, and the lower part of the connecting rod is inserted into the movable hole.

[0009] Furthermore, the movable hole passes through the secondary nut from top to bottom, the lower part of the connecting rod passes through the movable hole, and a stopper is formed at the lower end of the connecting rod, and a hexagonal countersunk hole is formed at the bottom of the stopper.

[0010] Furthermore, the middle parts of both sides of the multi-wire cutting unit are formed with screw rod clearance grooves along the vertical direction, and a supporting main board is arranged in the screw rod clearance groove; A connecting convex ring is formed on the upper end of the main nut in a circumferential direction, and the supporting main board and the connecting convex ring are locked and fixed together by a plurality of locking pieces.

[0011] Furthermore, the multi-wire cutting unit includes two symmetrically arranged movable bodies and a water spray mechanism connected between the upper ends of the two movable bodies, the two movable bodies are rotatably provided with wire rollers at the upper and lower ends of the opposite sides, and a second driving component is provided at one end of each wire roller; the opposite sides of the two movable bodies are connected to the frame through a lifting device.

[0012] Furthermore, the lifting device is arranged at a middle position of the movable body, and sliding guide components are provided on both sides of the lifting device between the movable body and the frame.

[0013] Furthermore, the frame includes a first support column, a second support column, and a support beam connected between the upper ends of the first support column and the second support column; the first support column and the second support column are both formed with a storage chamber on a side facing the multi-wire cutting unit; The multi-wire cutting unit further comprises a wire taking-up assembly and a wire paying-out assembly, wherein the wire taking-up assembly and the wire paying-out assembly are arranged on the movable body, and the wire taking-up assembly and the wire paying-out assembly are located in the storage chamber.

[0014] Furthermore, it also includes a walkway guardrail arranged outside the frame and a stone conveying vehicle arranged below the multi-wire cutting unit.

[0015] By adopting the technical solution of the present invention, at least the following beneficial effects are achieved: 1. The lifting device of the multi-wire cutting machine is designed to have a main nut and a secondary nut screwed on the screw rod, and the pitch of the secondary nut is greater than the pitch of the main nut, and the main nut is fixedly connected to one end of the connecting piece, and the secondary nut is movably connected to the other end of the connecting piece. At the same time, a displacement detection component is arranged between the main nut and the secondary nut, so that in the specific working process, the displacement detection component can be used to detect the displacement of the main nut caused by wear in real time, and the main nut can be replaced in time according to the detected displacement, so as to avoid the multi-wire cutting unit from falling off due to excessive wear of the main nut, which can greatly improve the safety of use.

[0016] 2. The connecting piece is designed to include a connecting rod and a tightening nut, and the upper part of the connecting rod is screwed together with the main nut and tightened with the tightening nut. At the same time, the lower end of the connecting rod passes through the secondary nut to form a stopper with a hexagonal countersunk hole. In the process of specific use, it can not only ensure that the main nut can be displaced downward after wear, but also facilitate the upper part of the connecting rod to be reliably connected with the main nut.

[0017] 3. By forming screw rod clearance grooves in the middle of both sides of the multi-wire cutting unit, and arranging a supporting main board in the screw rod clearance grooves, and forming a connecting convex ring at the upper end of the main nut, and using a locking piece to lock the supporting main board and the connecting convex ring together, not only can the main nut and the multi-wire cutting unit be reliably connected together, so that the main nut can drive the multi-wire cutting unit to rise and fall, but also the main nut can be easily disassembled and replaced after it is worn.

[0018] 4. The multi-wire cutting unit is designed to include two symmetrically arranged movable bodies and a water spray mechanism connected between the upper ends of the two movable bodies. Traditional multi-wire cutting units usually adopt a square frame, and the overall structure is more complicated. Therefore, compared with the traditional multi-wire cutting unit, the present invention has the advantages of simpler overall structure and lower manufacturing cost; at the same time, the water spray mechanism can not only meet the water spraying needs during the cutting process, but also connect the upper ends of the two movable bodies together, so that the two movable bodies and the water spray mechanism form a whole, thereby ensuring that the two movable bodies can be lifted and lowered synchronously.

[0019] 5. By designing the first support column and the second support column to form a storage chamber on the side facing the multi-wire cutting unit, and storing the wire-receiving assembly and the wire-releasing assembly of the multi-wire cutting unit in the storage chamber, not only can the wire-receiving assembly and the wire-releasing assembly be well protected, but the wire-receiving assembly, the wire-releasing assembly, etc. are all hidden inside, which can make the overall structure of the whole multi-wire cutting machine more compact, simple and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0021] Figure 1 It is a whole machine structure diagram of a multi-wire cutting machine with safety protection function of the present invention; Figure 2 It is a structural diagram of the multi-wire cutting machine of the present invention after removing the walkway guardrail, the stone conveyor vehicle and the first support column; Figure 3 It is a structural diagram of the multi-wire cutting machine of the present invention after removing the walkway guardrail, the stone conveyor vehicle and the second support column; Figure 4 It is a structural diagram of the lifting device in the present invention; Figure 5 It is a partial enlarged view of the lifting device at the position of the main nut and the auxiliary nut in the present invention; Figure 6 It is a structural diagram of the main nut in the present invention; Figure 7 It is a structural diagram of the secondary nut in the present invention; Figure 8 is a structural diagram of a connecting member in the present invention; Fig. 9 It is a structural diagram of the water spray mechanism in the present invention; Fig.10 It is a structural diagram of the first supporting column in the present invention.

[0022] Description of reference numerals: Multi-wire cutting machine 100; Frame 1, first support column 11, second support column 12, support beam 13, storage chamber 14; Multi-wire cutting unit 2, screw rod giving way slot 21, supporting main board 22, movable body 23, water spraying mechanism 24, supporting frame 241, water receiving basin body 242, water spraying hole 2421, wire roller 25, second driving assembly 26, wire taking-up assembly 27, wire releasing assembly 28; Lifting device 3, screw rod 31, first driving assembly 32, main nut 33, threaded hole 331, connecting convex ring 332, secondary nut 34, movable hole 341, connecting member 35, connecting rod 351, screw rod segment 3511, stopper 3512, hexagon socket countersunk hole 3513, tightening nut 352, displacement detection assembly 36, displacement sensor 361, fixing plate 362, first connecting frame 363, second connecting frame 364; Locking part 4; Sliding guide assembly 5, guide rail 51, slider 52; Aisle guardrail 6; Stone conveyor truck 7. DETAILED DESCRIPTION

[0023] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] It should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing these embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. In addition, the terms "first", "second", etc., etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0025] See also Figures 1 to 10 As shown, the present invention is a multi-wire cutting machine 100 with a safety protection function, the multi-wire cutting machine 100 comprises a frame 1, a multi-wire cutting unit 2 and a lifting device 3, both sides of the multi-wire cutting unit 2 are connected to the frame 1 through the lifting device 3, so that the multi-wire cutting unit 2 is driven to be lifted and lowered by the lifting device 3; the lifting device 3 comprises a screw rod 31, a first driving assembly 32, a main nut 33, a secondary nut 34, a connecting piece 35 and a displacement detection assembly 36; The main nut 33 and the auxiliary nut 34 are both screwed to the screw rod 31, and the pitch of the auxiliary nut 34 is greater than that of the main nut 33. The main nut 33 is connected to the frame 1. Since the pitch of the auxiliary nut 34 is greater than that of the main nut 33, the main nut 33 can be tightly screwed to the screw rod 31 and drive the multi-wire cutting unit 2 to move up and down. Although the auxiliary nut 34 can also be screwed to the screw rod 31, the auxiliary nut 34 and the screw rod 31 are in a loose screw connection state. Therefore, during the specific working process, the main nut 33 will be worn due to friction with the screw rod 31, while the auxiliary nut 34 will not be worn. There is a distance between the main nut 33 and the secondary nut 34, one end of the connecting member 35 is fixedly connected to the main nut 33, and the other end of the connecting member 35 is movably connected to the secondary nut 34; the displacement detection component 36 is arranged between the main nut 33 and the secondary nut 34; the first driving component 32 is arranged on the frame 1, and the first driving component 32 is connected to one end of the screw rod 31, so as to drive the screw rod 31 to rotate through the first driving component 32, wherein the first driving component 32 can specifically adopt a reduction motor. In specific operation, when the main nut 33 is worn, the main nut 33 will move slightly downward to reduce the distance between the main nut 33 and the secondary nut 34, so by arranging the displacement detection component 36 between the main nut 33 and the secondary nut 34, the displacement detection component 36 can be used to detect the displacement of the main nut 33.

[0026] The present invention designs the lifting device 3 of the multi-wire cutting machine 100 to have a main nut 33 and a secondary nut 34 screwed on the screw rod 31, and the pitch of the secondary nut 34 is greater than the pitch of the main nut 33, and the main nut 33 is fixedly connected to one end of the connecting piece 35, and the secondary nut 34 is movably connected to the other end of the connecting piece 35, and a displacement detection component 36 is arranged between the main nut 33 and the secondary nut 34, so that in the specific working process, the displacement detection component 36 can be used to detect the displacement of the main nut 33 caused by wear in real time, and the main nut 33 can be replaced in time according to the detected displacement, so as to avoid the multi-wire cutting unit 2 from falling off due to excessive wear of the main nut 33, which can greatly improve the safety of use.

[0027] In some embodiments of the present invention, the main nut 33 is located above the secondary nut 34 to better detect the displacement of the main nut 33, the screw rod 31 is a trapezoidal screw rod, the main nut 33 is a trapezoidal copper nut, and the secondary nut 34 is a trapezoidal nut. Specifically, the secondary nut 34 can also be a trapezoidal copper nut. It should be noted that the trapezoidal screw rod and the trapezoidal copper nut in the present invention specifically refer to the cross-section of the thread on the screw rod 31 and the main nut 33 (secondary nut 34) being a trapezoidal structure.

[0028] Since copper nuts have the advantages of being not easy to rust, corrosion-resistant, and easy to conduct heat, the nuts of existing lifting devices are usually made of copper nuts. However, copper nuts are easy to wear during use, and there are certain safety hazards. The technical solution of the present invention can well realize real-time detection of the wear condition of the main nut 33, and when the main nut 33 is worn to a certain extent, the displacement detection component 36 is used to trigger an alarm, so that the staff can replace the main nut 33 in time to ensure safe use.

[0029] In some embodiments of the present invention, the displacement detection assembly 36 includes a displacement sensor 361 and a fixing plate 362, wherein the displacement sensor 361 is connected to the side wall of the main nut 33, and the fixing plate 362 is connected to the side wall of the secondary nut 34, and the displacement sensor 361 is located directly above the fixing plate 362. In the specific implementation of the present invention, the displacement sensor 361 can be directly fixedly mounted on the side wall of the main nut 33, and the fixing plate 362 can be directly fixedly mounted on the side wall of the secondary nut 34; the displacement sensor 361 can also be connected to the side wall of the main nut 33 through a first connecting frame 363, and the fixing plate 362 can be connected to the side wall of the secondary nut 34 through a second connecting frame 364.

[0030] When the displacement detection component 36 of the present invention is used in practice, when the main nut 33 and the auxiliary nut 34 are just installed on the screw rod 31, the distance between the displacement sensor 361 and the fixing plate 362 is fixed, and the distance between the displacement sensor 361 and the fixing plate 362 can be detected in real time by the displacement sensor 361; in the process of the main nut 33 and the screw rod 31 working together, when the main nut 33 is worn due to friction, the main nut 33 will be displaced downward due to the increase in the tooth pitch. At this time, the distance between the displacement sensor 361 and the fixing plate 362 will become smaller; when the displacement sensor 361 detects that the distance between the displacement sensor 361 and the fixing plate 362 reaches a certain set value, it means that the main nut 33 has been severely worn. At this time, the displacement sensor 361 can be used to trigger an alarm to prompt the staff to replace the main nut 33 in time to ensure safe use.

[0031] In some embodiments of the present invention, a plurality of connecting members 35 are distributed around the circumferential direction between the main nut 33 and the auxiliary nut 34 to better connect the main nut 33 and the auxiliary nut 34 together and ensure that the main nut 33 can move downward more smoothly after being worn; Please refer to Figure 8As shown, each of the connecting members 35 includes a connecting rod 351 and a tightening nut 352; a threaded hole 331 is formed at the bottom of the main nut 33 at a position corresponding to each connecting rod 351, a screw segment 3511 is formed at the upper part of the connecting rod 351, the screw segment 3511 is threadedly connected to the main nut 33, the tightening nut 352 is threadedly connected to the screw segment 3511, and the tightening nut 352 is tightened to the bottom of the main nut 33, so that the upper part of the connecting rod 351 can be more reliably connected to the main nut 33; a movable hole 341 is formed on the secondary nut 34, and the lower part of the connecting rod 351 is inserted into the movable hole 341. Since the lower part of the connecting rod 351 and the secondary nut 34 are movably connected up and down, the main nut 33 can be displaced downward after wear.

[0032] Furthermore, the movable hole 341 passes through the secondary nut 34 from top to bottom, the lower part of the connecting rod 351 passes through the movable hole 341, and a stopping portion 3512 is formed at the lower end of the connecting rod 351, and the stopping portion 3512 is used to limit the lower end of the connecting rod 351, so that the lower end of the connecting rod 351 cannot enter the movable hole 341; a hexagonal countersunk hole 3513 is formed at the bottom of the stopping portion 3512, so that the connecting rod 351 can be rotated by operating the connecting rod 351 with the help of a tool, so that the upper part of the connecting rod 351 is screwed together with the main nut 33.

[0033] The present invention designs the connecting piece 35 to include a connecting rod 351 and a tightening nut 352, and the upper part of the connecting rod 351 is screwed together with the main nut 33 and tightened with the tightening nut 352. At the same time, the lower end of the connecting rod 351 passes through the secondary nut 34 and forms a stopper 3512 with a hexagonal countersunk hole 3513, so that in the process of specific use, it can not only ensure that the main nut 33 can be displaced downward after wear, but also can facilitate the upper part of the connecting rod 351 and the main nut 33 to be reliably connected together.

[0034] In some embodiments of the present invention, please refer to Figure 2 and Figure 3 As shown, the middle parts of both sides of the multi-wire cutting unit 2 are formed with screw rod clearance grooves 21 along the vertical direction, and a supporting main board 22 is arranged in the screw rod clearance grooves 21; A connecting protrusion 332 is formed at the upper end of the main nut 33 around the circumferential direction, and the supporting main board 22 and the connecting protrusion 332 are locked and fixed together by a plurality of locking members 4, wherein the locking members 4 can specifically be bolts.

[0035] The present invention forms screw rod clearance grooves 21 in the middle of both sides of the multi-wire cutting unit 2, and arranges a supporting main board 22 in the screw rod clearance grooves 21, and at the same time forms a connecting convex ring 332 at the upper end of the main nut 33, and uses a locking member 4 to lock and connect the supporting main board 22 and the connecting convex ring 332 together. Not only can the main nut 33 and the multi-wire cutting unit 2 be reliably connected together so that the main nut 33 can drive the multi-wire cutting unit 2 to rise and fall, but also the main nut 33 can be very conveniently disassembled and replaced after the main nut 33 is worn.

[0036] In some embodiments of the present invention, please refer to Figure 2 and Figure 3 As shown, the multi-wire cutting unit 2 includes two symmetrically arranged movable bodies 23 and a water spraying mechanism 24 connected between the upper ends of the two movable bodies 23. The two movable bodies 23 are both rotatably provided with wire rollers 25 at the upper and lower ends of the opposite sides. A second driving assembly 26 is provided at one end of each wire roller 25, so that the wire roller 25 is driven to rotate by the second driving assembly 26. The second driving assembly 26 can be specifically a reduction motor; the opposite sides of the two movable bodies 23 are connected to the frame 1 through the lifting device 3. When the present invention is implemented, a diamond wire (not shown) is wound around each wire roller 25. When working, the second driving assembly 26 is used to drive the wire roller 25 to rotate, and each wire roller 25 is used to drive the diamond wire to transmit, so that the diamond wire can cut stone and the like.

[0037] The present invention designs a multi-wire cutting unit 2 including two symmetrically arranged movable bodies 23 and a water spraying mechanism 24 connected between the upper ends of the two movable bodies 23. Traditional multi-wire cutting units usually adopt a square frame, and the overall structure is more complicated. Therefore, compared with the traditional multi-wire cutting unit, the present invention has the advantages of simpler overall structure and lower manufacturing cost; at the same time, the water spraying mechanism 24 can not only meet the water spraying demand during the cutting process, but also connect the upper ends of the two movable bodies 23 together, so that the two movable bodies 23 and the water spraying mechanism 24 form a whole, thereby ensuring that the two movable bodies 23 can be raised and lowered synchronously.

[0038] As a specific implementation of the present invention, please focus on Fig. 9 As shown, the water spraying mechanism 24 includes a supporting frame 241 and a water receiving basin 242, wherein the supporting frame 241 is connected between the upper ends of the two movable bodies 23, the water receiving basin 242 is arranged on the supporting frame 241, and a plurality of rows of water spraying holes 2421 are evenly distributed on the bottom of the water receiving basin 242, so that water can be sprayed more evenly onto the multi-wire cutting unit 2 and the cutting object during specific operation.

[0039] In some embodiments of the present invention, the lifting device 3 is arranged in the middle of the movable body 23, and a sliding guide assembly 5 is provided on both sides of the lifting device 3 between the movable body 23 and the frame 1, wherein the sliding guide assembly 5 specifically includes a guide rail 51 and a slider 52, wherein the guide rail 51 is arranged on the frame 1 along the vertical direction, and the slider 52 is arranged on the movable body 23, and the slider 52 is slidably assembled with the guide rail 51. The present invention ensures that the entire multi-wire cutting unit 2 can be lifted and lowered more smoothly by arranging the lifting device 3 in the middle of the movable body 23 and providing the sliding guide assembly 5 on both sides of the lifting device 3.

[0040] In some embodiments of the present invention, the frame 1 includes a first support column 11, a second support column 12, and a support beam 13 connected between the upper ends of the first support column 11 and the second support column 12; the first support column 11 and the second support column 12 are both formed with a storage chamber 14 on a side facing the multi-wire cutting unit 2, such as Fig.10 As shown; The multi-wire cutting unit 2 also includes a wire taking-up assembly 27 and a wire paying-out assembly 28, and the wire taking-up assembly 27 and the wire paying-out assembly 28 are arranged on the movable body 23, and the wire taking-up assembly 27 and the wire paying-out assembly 28 are located in the storage chamber 14. When the present invention is implemented, it is necessary to arrange the wire taking-up assembly 27 on one of the movable bodies 23, and arrange the wire paying-out assembly 28 on the other movable body 23, and at the same time, the two ends of the diamond wire are respectively connected to the wire taking-up assembly 27 and the wire paying-out assembly 28.

[0041] The present invention forms a storage chamber 14 on the side facing the multi-wire cutting unit 2 on the first support column 11 and the second support column 12, and stores the wire taking-up assembly 27 and the wire paying-out assembly 28 of the multi-wire cutting unit 2 in the storage chamber 14, which not only can well protect the wire taking-up assembly 27 and the wire paying-out assembly 28, but also the wire taking-up assembly 27, the wire paying-out assembly 28 and the like are hidden inside, which can make the overall structure of the whole multi-wire cutting machine 100 more compact, simple and beautiful.

[0042] In some embodiments of the present invention, the multi-wire cutting machine 100 also includes a walkway guardrail 6 arranged outside the frame 1 and a stone conveyor 7 arranged under the multi-wire cutting unit 2, wherein the walkway guardrail 6 is used to facilitate the walking of the staff, and the stone conveyor 7 is used to transport the stone to the bottom of the multi-wire cutting unit 2 to facilitate the multi-wire cutting unit 2 to process the stone.

[0043] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A multi-wire cutting machine with a safety protection function, comprising a frame, a multi-wire cutting unit and a lifting device, wherein both sides of the multi-wire cutting unit are connected to the frame through the lifting device; characterized in that: The lifting device includes a screw rod, a first driving assembly, a main nut, a secondary nut, a connecting piece and a displacement detection assembly; The main nut and the secondary nut are both threadedly connected to the screw rod, the pitch of the secondary nut is greater than the pitch of the main nut, and the main nut is connected to the frame; a distance is left between the main nut and the secondary nut, one end of the connecting piece is fixedly connected to the main nut, and the other end of the connecting piece is movably connected to the secondary nut; the displacement detection component is arranged between the main nut and the secondary nut; the first driving component is arranged on the frame, and the first driving component is connected to one end of the screw rod.

2. A multi-wire cutting machine with safety protection function as claimed in claim 1, characterized in that: The main nut is located above the secondary nut, the lead screw is a trapezoidal lead screw, the main nut is a trapezoidal copper nut, and the secondary nut is a trapezoidal nut.

3. The multi-wire cutting machine with safety protection function as claimed in claim 1, characterized in that: The displacement detection assembly includes a displacement sensor and a fixing plate, wherein the displacement sensor is connected to the side wall of the main nut, the fixing plate is connected to the side wall of the auxiliary nut, and the displacement sensor is located directly above the fixing plate.

4. The multi-wire cutting machine with safety protection function as claimed in claim 1, characterized in that: A plurality of the connecting members are distributed at intervals around the circumference between the main nut and the auxiliary nut; Each of the connecting parts includes a connecting rod and a tightening nut; a threaded hole is formed at the bottom of the main nut at a position corresponding to each connecting rod, a screw section is formed at the upper part of the connecting rod, the screw section is threadedly connected to the main nut, the tightening nut is threadedly connected to the screw section, and the tightening nut is tightened to the bottom of the main nut; a movable hole is opened on the secondary nut, and the lower part of the connecting rod is inserted into the movable hole.

5. A multi-wire cutting machine with safety protection function as claimed in claim 4, characterized in that: The movable hole passes through the secondary nut from top to bottom, the lower part of the connecting rod passes through the movable hole, and a stopper is formed at the lower end of the connecting rod, and a hexagonal countersunk hole is formed at the bottom of the stopper.

6. The multi-wire cutting machine with safety protection function as claimed in claim 1, characterized in that: The middle parts of both sides of the multi-wire cutting unit are formed with screw rod clearance grooves along the vertical direction, and a supporting main board is arranged in the screw rod clearance groove; A connecting convex ring is formed on the upper end of the main nut in a circumferential direction, and the supporting main board and the connecting convex ring are locked and fixed together by a plurality of locking pieces.

7. A multi-wire cutting machine with safety protection function as claimed in any one of claims 1 to 6, characterized in that: The multi-wire cutting unit includes two symmetrically arranged movable bodies and a water spraying mechanism connected between the upper ends of the two movable bodies. The two movable bodies are rotatably provided with wire rollers at the upper and lower ends of the opposite sides, and a second driving component is provided at one end of each wire roller; the opposite sides of the two movable bodies are connected to the frame through a lifting device.

8. The multi-wire cutting machine with safety protection function as claimed in claim 7, characterized in that: The lifting device is arranged at the middle position of the movable body, and sliding guide components are arranged on both sides of the lifting device between the movable body and the frame.

9. The multi-wire cutting machine with safety protection function as claimed in claim 7, characterized in that: The frame includes a first support column, a second support column, and a support beam connected between the upper ends of the first support column and the second support column; the first support column and the second support column are both formed with a storage chamber on a side facing the multi-wire cutting unit; The multi-wire cutting unit further comprises a wire taking-up assembly and a wire paying-out assembly, wherein the wire taking-up assembly and the wire paying-out assembly are arranged on the movable body, and the wire taking-up assembly and the wire paying-out assembly are located in the storage chamber.

10. A multi-wire cutting machine with safety protection function as claimed in any one of claims 1 to 6, characterized in that: The machine also includes a walkway guardrail arranged outside the frame and a stone conveying vehicle arranged below the multi-wire cutting unit.

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