Synchronous adjustment of variable pitch multi-wire sawing device

Abstract

The application provides a kind of synchronous regulation variable pitch multi-wire cutting device, including frame, variable pitch driving mechanism, roller wheel group, cutting wire and second driving mechanism and synchronous transmission mechanism, variable pitch driving mechanism includes the first driving mechanism for driving outer roller wheel rotation to realize cutting operation and the variable pitch component for adjusting the pitch of roller wheel group, the pitch of roller wheel group can be synchronously adjusted by motor control without disassembling roller wheel group when adjusting pitch, stable operation of wire cutting machine can be realized in the process of variable pitch multi-wire cutting, and the pitch adjustment of the application has the characteristics of high efficiency, high stability, high precision and high flexibility, which is suitable for production scenarios with high efficiency, high precision and wide cutting range processing requirements, so that the application is easy to popularize and apply.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting equipment, in particular to a multi-wire cutting device with variable cutting interval and synchronous adjustment. BACKGROUND

[0002] The currently used multi-wire cutting device has limited adjustment range of cutting interval, cannot be adjusted simultaneously and cannot be automatically controlled, so its application range is limited, it is only suitable for cutting stone products of specific specifications, and its cutting efficiency is limited, flexibility is poor and cutting width range is limited.

[0003] Therefore, the present application is proposed after the applicant studies the prior art. SUMMARY

[0004] The present application provides a multi-wire cutting device with variable cutting interval and synchronous adjustment, which aims to improve at least one of the above technical problems.

[0005] To solve the above technical problems, the present application provides a multi-wire cutting device with variable cutting interval and synchronous adjustment, which comprises a rack, a roller wheel group and a cutting wire connected to the roller wheel group, further comprises a variable distance driving mechanism, two variable distance driving mechanisms are arranged on both sides of the rack, and a plurality of roller wheel groups are arranged on the variable distance driving mechanism; the variable distance driving mechanism comprises a first driving mechanism and a variable distance assembly, the roller wheel group is connected and arranged with the first driving mechanism to drive the roller wheel group to rotate; the variable distance assembly is connected and arranged with each roller wheel group to adjust the distance between each roller wheel group on the variable distance mechanism; further comprising a second driving mechanism, the second driving mechanism is connected and arranged with one side variable distance assembly as a driving source of the variable distance assembly; further comprising a synchronous transmission mechanism, the synchronous transmission mechanism is connected and arranged between the two variable distance assemblies.

[0006] As a further optimization, the roller wheel group comprises an inner roller, an outer roller and a first bearing, the first bearing is connected and arranged between the outer periphery of the inner roller and the inner periphery of the outer roller, and the cutting wire is arranged on the outer roller.

[0007] As a further optimization, the first driving mechanism comprises a first driving motor, a driving base plate, a driven base plate and a plurality of driving rods, the first driving motor is fixedly installed on the rack, the output end of the first driving motor is coaxially fixed on the driving base plate, the driven base plate is rotationally connected to the rack, the driving rods are fixedly connected between the driving base plate and the driven base plate, and a plurality of driving rods are arranged in a circumferential array on the driving base plate; the driving rods pass through the outer roller and are slidably connected.

[0008] As a further optimization, the variable distance assembly comprises a planetary gear set and a plurality of variable distance screws, the planetary gear set is coaxially arranged with the roller wheel set; the variable distance screws are coaxially fixed on the planetary gears of the planetary gear set; two groups of variable distance thread groove groups are symmetrically arranged on the variable distance screws, the variable distance thread groove groups are provided with a plurality of thread grooves with different pitches, one end of the thread grooves gradually converges to the middle part of the variable distance screw, and the other end gradually diverges away from the middle part; the thread grooves are arranged at equal intervals on the same generatrix of the variable distance screw; the inner roller is provided with a connecting hole through which the variable distance screw passes, and a protrusion adapted to slide with the thread groove is formed on the inner side wall of the connecting hole.

[0009] As a further optimization, the planetary gear set comprises a sun gear, a planetary gear and an inner ring gear, the inner ring gear is fixed on the frame, and a plurality of planetary gears are meshingly arranged between the sun gear and the inner ring gear; the second driving mechanism comprises a second driving motor, a worm gear and a worm, a flat key shaft is coaxially arranged on the sun gear, the worm gear is coaxially connected to the other end of the flat key shaft, the output end of the second driving motor is coaxially fixedly connected with the worm, and the worm is in transmission connection with the worm gear.

[0010] As a further optimization, the synchronous transmission mechanism comprises a synchronous belt and two synchronous wheels, the synchronous wheels are coaxially arranged on the flat key shaft, and the synchronous belt is connected between the two synchronous wheels of the two variable distance driving mechanisms.

[0011] As a further optimization, the synchronous belt and the synchronous wheel are in meshing transmission.

[0012] As a further optimization, a second bearing is connected between the driven bottom plate and the frame.

[0013] As a further optimization, the pitch of the thread groove at one end close to the middle part of the variable distance screw is the same as the thickness of the roller wheel set.

[0014] As a further optimization, the pitch of the thread groove is calculated according to the following formula: Wherein, m represents the thread groove required to calculate the pitch of the same group of variable distance thread groove groups, n=2m; D is the maximum distance between the thread grooves, and d is the minimum distance between the thread grooves.

[0015] By adopting the above technical scheme, the present application has the following beneficial effects:

[0016] 1. The first driving mechanism is used as the rotation source of the roller wheel set, so that the driving rod can rotate stably without restricting the axial displacement of the roller wheel set, and the roller wheel set is arranged on the variable distance assembly, so that the accurate variable distance control of the plurality of roller wheel sets can be realized through the variable distance assembly.

[0017] 2、The present application can make the first driving mechanism drive the outer roller wheel to rotate to realize high-speed cutting of the cutting line, and make the inner roller wheel keep relatively static under the restriction of the variable distance assembly, so as to ensure the position stability during rotary cutting.

[0018] 3、The synchronous transmission mechanism cooperates with the synchronous wheel and the synchronous belt in the toothed connection, realizes the synchronous transmission between the two groups of driving variable distance mechanisms, so as to realize the accurate synchronous variable distance operation of the roller wheel groups on both sides, and the roller wheel groups can be adjusted in distance without disassembly and only by controlling the motor.

[0019] 4、The second driving mechanism is used as the driving source, the self-locking of the worm wheel and the worm and the continuous torque of the second driving motor can realize the stable operation of the cutting device, the step motor is used as the second driving motor, the high transmission ratio of the worm wheel and the worm and the wide range transmission ratio of the planetary gear set are matched with the small step angle, so that the distance adjustment of the present application has the characteristics of high efficiency, high stability, high precision and high flexibility, is suitable for the production scene with high efficiency, high precision and wide cutting range processing demand, and is easy to popularize and apply. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of a synchronous variable distance multi-wire cutting device of the present application;

[0022] Figure 2 is a schematic diagram of the structure of one side of a synchronous variable distance multi-wire cutting device of the present application;

[0023] Figure 3 is a schematic diagram of the local structure of the second driving mechanism of the present application;

[0024] Figure 4 is a schematic diagram of the local structure of the second driving mechanism of the present application;

[0025] Figure 5 is a schematic diagram of the cross-sectional structure of the roller wheel group on the variable distance driving mechanism of the present embodiment;

[0026] Figure 6This is a partial structural diagram of one end of the threaded grooves in this embodiment.

[0027] The diagram shows the following markings: 1. Frame; 2. Roller assembly; 3. Cutting line; 4. First drive mechanism; 5. Pitch variable assembly; 6. Second drive mechanism; 7. Synchronous transmission mechanism; 201. Inner roller; 202. Outer roller; 203. First bearing; 401. First drive motor; 402. Drive base plate; 403. Driven base plate; 404. Drive rod; 405. Second bearing; 501. Planetary gear set; 502. Pitch variable screw; 601. Second drive motor; 602. Worm gear; 603. Worm; 701. Synchronous belt; 702. Synchronous pulley; 2011. Connecting hole; 2012. Protrusion; 5011. Sun gear; 5012. Planetary gear; 5013. Internal gear ring; 5014. Key shaft; 5021. Pitch variable thread groove assembly; 50211. Thread groove. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Depend on Figures 1 to 6As shown, the embodiment of the present application provides a kind of synchronous regulation variable pitch multi-wire cutting device, including rack 1, variable pitch driving mechanism, roller group 2 and cutting line 3, two groups of variable pitch driving mechanism are fixed on the both sides of rack 1, and are parallelly arranged, multiple roller groups 2 are configured on variable pitch driving mechanism, and cutting line 3 is connected between corresponding roller groups 2 of two groups of variable pitch driving mechanism;Variable pitch driving mechanism includes first driving mechanism 4 and variable pitch assembly 5, roller group 2 is arranged on the output shaft of first driving mechanism 4, to drive roller group 2 to rotate, when roller group 2 rotates, cutting line 3 is driven to cut, wherein, two groups of variable pitch driving mechanism should keep appropriate distance, to ensure that the tension degree required when cutting line 3 cuts is kept;Roller group 2 is connected and arranged on variable pitch assembly 5, and the distance between each roller group 2 on the same variable pitch mechanism is adjusted by variable pitch assembly 5;Wherein, still be provided with synchronous transmission mechanism 7 of transmission connection between two groups of variable pitch driving mechanism, to realize the synchronization of two groups of variable pitch assembly 5 when variable pitch, so that the two roller groups 2 on the same cutting line 3 are changed synchronously, ensure the stability when cutting.

[0030] Also include second driving mechanism 6, the output end of second driving mechanism 6 is connected with the input end of the variable pitch assembly 5 of one side and is arranged, and variable pitch assembly 5 is adjusted by second driving mechanism 6, in turn drives multiple roller groups 2 on variable pitch assembly 5 to change pitch, wherein, the change of pitch here refers to the distance change between multiple roller groups 2 on the same variable pitch driving mechanism.

[0031] Preferably, roller group 2 includes inner roller 201, outer roller 202 and first bearing 203, first bearing 203 is connected and arranged between the outer periphery of inner roller 201 and the inner periphery of outer roller 202, and cutting line 3 is configured on outer roller 202, wherein, first bearing 203 is small radial cylindrical roller bearing.

[0032] Further, the first driving mechanism 4 comprises a first driving motor 401, a driving base plate 402, a driven base plate 403 and a plurality of driving rods 404, the first driving motor 401 is fixedly installed on the frame 1, wherein the first driving motor 401 is arranged on one side of the variable distance driving mechanism, in this embodiment, on the right side, the output end of the second driving mechanism 6 is arranged on the other side, i.e. the left side, and is in transmission connection with the input end of the variable distance assembly 5, so that the two do not affect each other. The output end of the first driving motor 401 is coaxially fixed on the driving base plate 402, the driven base plate 403 is rotatably connected to the frame 1 through a second bearing 405, the second bearing 405 is a large-diameter cylindrical roller bearing, the driving rods 404 are fixedly connected between the driving base plate 402 and the driven base plate 403 through nuts, and the plurality of driving rods 404 are arranged in a circumferential array on the driving base plate 402; the driving rods 404 pass through the outer roller wheel 202 and are in sliding connection, so as not to constrain the axial displacement movement of the outer roller wheel 202 on the driving rods 404. In this embodiment, three driving rods 404 are arranged, the three driving rods 404 are equidistantly arranged, and the distance from the axis of the roller wheel set 2 is also the same, so that when the first driving motor 401 is driven, the outer roller wheel 202 can be driven to rotate by the driving base plate 402 and the driving rods 404, and the three driving rods 404 can drive the outer roller wheel 202 to rotate, so as to effectively ensure the stability of the first driving mechanism 4.

[0033] In this embodiment, the first driving motor 401 is a servo motor.

[0034] Preferably, the variable distance assembly 5 comprises a planetary gear set 501 and a plurality of variable distance screws 502, wherein the planetary gear set 501 comprises a sun gear 5011, a plurality of planetary gears 5012 and an inner ring gear 5013, the inner ring gear 5013 is fixedly arranged on a mounting seat of the frame 1, and the two sides are communicated, a plurality of planetary gears 5012 are arranged in meshing between the sun gear 5011 and the inner ring gear 5013, and in the embodiment, three planetary gears 5012 are arranged on the outer periphery of the sun gear 5011; the planetary gear set 501 is coaxially arranged with the roller wheel set 2; correspondingly, the three variable distance screws 502 are coaxially fixed on the three planetary gears 5012 of the planetary gear set 501. The variable distance screw 502 is symmetrically provided with two groups of variable distance thread groove groups 5021, the two groups of variable distance thread groove groups 5021 are symmetrically arranged on the variable distance screw 502, the variable distance thread groove group 5021 is provided with a plurality of thread grooves 50211 with different pitches, and the pitch here refers to the length of the thread groove 50211, wherein in the embodiment, each group of variable distance thread groove groups 5021 is provided with five thread grooves 50211, and each variable distance screw 502 is provided with ten thread grooves 50211. One end of the thread groove 50211 gradually converges at the middle part of the variable distance screw 502, and the other end gradually diverges away from the middle part. The left five thread grooves 50211 are dispersed to the left from one end to the other end of the middle part, and the right five thread grooves 50211 are dispersed to the right from one end to the other end of the middle part, forming symmetry. Among them, on the same generatrix of the variable distance screw 502, even on any generatrix, the ten thread grooves 50211 in the embodiment are arranged at equal intervals between adjacent ones. It should be noted that when the two thread grooves 50211 closest to the middle of the variable distance screw 502 are arranged at equal intervals at their ends, the equal interval arrangement of the total ten thread grooves 50211 of the left and right groups can be realized. Further, the inner roller 201 is provided with a connecting hole 2011 through which the variable distance screw 502 passes, and the inner side wall of the connecting hole 2011 is formed with a protrusion 2012 which is in sliding connection with the thread groove 50211. Conversely, the embodiment is provided with ten groups of roller wheel sets 2, each group of roller wheel set 2 is arranged on each thread groove 50211, and the adjacent intervals of the ten groups of roller wheel sets 2 are the same. When arranged, the protrusions 2012 of the ten groups of roller wheel sets 2 are located in each thread groove 50211 on the same generatrix, so that each roller wheel is also arranged at equal intervals. When the second driving mechanism 6 drives the planetary gear set 501 to operate, the three variable distance screws 502 are simultaneously driven to rotate, thereby stably enabling the protrusion 2012 to move along the thread groove 50211 with the rotation of the variable distance screw 502, thereby realizing the simultaneous reduction or expansion of the interval between the roller wheel sets 2 after rotation while maintaining equal interval arrangement. And because the inner roller 201 and the outer roller 202 can rotate relative to each other, the outer roller 202 and the inner roller 201 do not affect each other while changing the size of the interval.It should be noted that the three pitch screws 502 are arranged in parallel with equal intervals, and the angles of the pitch screw thread groove groups 5021 are also the same, so that the three pitch screws 502 can rotate synchronously, and since the three pitch screws 502 pass through the connecting inner roller 201 at the same time, the inner roller 201 is limited to rotate in the radial direction, so that the inner roller 201 can be driven to realize axial displacement when the pitch screw 502 rotates.

[0035] Further, the second driving mechanism 6 includes a second driving motor 601, a worm gear 602 and a worm 603, a flat key shaft 5014 is coaxially arranged on the sun gear 5011, the worm gear 602 is coaxially connected and arranged at the other end of the flat key shaft 5014, in the embodiment, the second driving motor 601 is a step motor, the output end thereof is coaxially fixedly connected with the worm 603 to drive the worm 603 to rotate, the worm 603 is in meshing transmission connection with the worm gear 602, so that the worm gear 602 drives the sun gear 5011 through the flat key shaft 5014 when rotating, and further drives the pitch screw 502 to rotate through the planetary gear set 501 to realize pitch change of the roller set 2.

[0036] Preferably, the synchronous transmission mechanism 7 is further included, the synchronous transmission mechanism 7 includes a synchronous belt 701 and two synchronous wheels 702, the synchronous wheels 702 are coaxially arranged on the flat key shaft 5014, the two synchronous wheels 702 are arranged on the flat key shaft 5014 of the respective pitch change driving mechanism on both sides respectively, and are connected and arranged on the two synchronous wheels 702 through the synchronous belt 701 to drive, so that when the second driving motor 601 on one side drives the pitch change assembly 5, the synchronous transmission mechanism 7 drives the pitch change assembly 5 on the other side to realize synchronous pitch change on both sides. The synchronous belt 701 and the synchronous wheel 702 are in meshing transmission, which avoids the phenomenon of slipping, realizes accurate synchronous transmission with a constant transmission ratio, and further accurately controls the pitch change.

[0037] Preferably, in the embodiment, the pitch of the thread groove 50211 at the end close to the middle of the pitch screw 502 is the same as the thickness of the roller set 2, that is, when the roller set 2 is adjusted to the end close to the middle of the thread groove 50211 by the pitch change control, each roller set 2 can be completely attached, so that the minimum cutting distance of the cutting line 3 is the thickness of the roller set 2.

[0038] Preferably, the pitch calculation formula of the thread groove 50211 is: Wherein, m refers to the thread groove 50211 required to calculate the pitch of the same group of variable pitch thread groove group 5021, n=2·m, n is also the total number of roller wheel groups 2 on a variable pitch driving mechanism; D is the maximum distance between the thread grooves 50211, and d is the minimum distance between the thread grooves 50211. It should be noted that the distance between the thread grooves 50211 refers to the distance between adjacent thread grooves 50211, which will not be described hereinafter.

[0039] Preferably, in the present embodiment, two groups of left-right symmetrical variable pitch thread groove groups 5021 are provided on the same variable pitch screw 502, each group has 5 thread grooves 50211, a total of 10 thread grooves 50211, the left side is left-handed thread, and the right side is right-handed thread. The interval distance of the converging end of the thread groove 50211, that is, the minimum distance d, is 6mm, which is also the minimum cutting distance, and the thickness of the roller wheel group 2 is also 6mm; the interval distance of the farthest diverging end of the thread groove 50211, that is, the maximum distance D, is 50mm, which is also the maximum cutting distance; the total length of the variable pitch screw 502 is 456mm, and the diameter is 15mm; the calculated pitch P m is 22mm, 66mm, 110mm, 154mm, and 198mm in order from small to large. When calculating, the maximum pitch of one thread groove 50211 can also be calculated first, for example: P max = P5, which is 198mm, and the pitch of the adjacent smaller one is: P4 = P5-(D-d), which is 154mm.

[0040] Therefore, the present application controls the variable pitch by setting two groups of variable pitch driving mechanisms on both sides of the rack 1 and synchronously driving through the synchronous transmission mechanism 7, so that the interval distance of the roller wheel group 2 changes synchronously when the second driving mechanism 6 controls the variable pitch assembly 5 to change the interval distance, and then the cutting interval distance of the cutting line 3 is changed to perform cutting operation, wherein the cutting line 3 is a diamond wire. At the same time, the first driving mechanism 4 cooperates with the outer roller 202 through the driving rod 404, so that the outer roller 202 can slide along the axial direction of the driving rod 404 when the driving rod 404 transmits torque to the outer roller 202, so as to realize variable pitch. At this time, the cutting line 3 cooperates with the outer roller 202 to drive rotation to realize cutting function, and the inner roller 201 is in a relatively static state. When the variable pitch is implemented, the first driving mechanism 4 is stopped first, and then the variable pitch is realized after the second driving mechanism 6 is adjusted and controlled. It should be noted that the second driving motor 601 needs to be powered throughout the process to continuously maintain torque throughout the process to further ensure the stability of the variable pitch multi-wire cutting process.

[0041] The above merely describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-wire cutting device with synchronously adjustable variable spacing, comprising a frame, a roller assembly, and cutting wires connected to the roller assembly, characterized in that, It also includes a pitch drive mechanism, with two sets of pitch drive mechanisms set on both sides of the frame, and multiple roller sets configured on the pitch drive mechanism; The variable pitch drive mechanism includes a first drive mechanism and a variable pitch assembly. The roller wheel assembly is connected to the first drive mechanism to drive the roller wheel assembly to rotate. The variable pitch assembly is connected to each roller wheel assembly to adjust the spacing between each roller wheel assembly on the variable pitch drive mechanism. It also includes a second drive mechanism, which is connected to one side of the pitch converter assembly and serves as the drive source for the pitch converter assembly; it also includes a synchronous transmission mechanism, which is connected between the two pitch converter assemblies. The roller assembly includes an inner roller, an outer roller, and a first bearing. The first bearing is connected between the outer circumference of the inner roller and the inner circumference of the outer roller, and the cutting line is disposed on the outer roller. The first drive mechanism includes a first drive motor, a drive base plate, a driven base plate, and multiple drive rods. The first drive motor is mounted and fixed on the frame, and its output end is coaxially fixed on the drive base plate. The driven base plate is rotatably connected to the frame. The drive rods are fixedly connected between the drive base plate and the driven base plate, and the multiple drive rods are arranged in a circumferential array on the drive base plate. The drive rods pass through the outer roller and are slidably connected. The pitch-changing assembly includes a planetary gear set and multiple pitch-changing screws. The planetary gear set is coaxially arranged with the roller set. The pitch-changing screws are coaxially fixed to the planetary gears of the planetary gear set. Two sets of pitch-changing thread grooves are symmetrically arranged on the pitch-changing screws. Each set of thread grooves has multiple thread grooves with different pitches. One end of each thread groove gradually converges at the middle of the pitch-changing screw, while the other end gradually disperses away from the middle. The thread grooves are evenly spaced on the same generatrix of the pitch-changing screws. A connecting hole suitable for the pitch-changing screws to pass through is provided through the inner roller. A protrusion adapted to slide and connect with the thread groove is formed on the inner sidewall of the connecting hole.

2. The multi-wire cutting device with synchronously adjustable variable spacing according to claim 1, characterized in that... The planetary gear set includes a sun gear, planet gears and an internal gear ring, the internal gear ring is fixed on the frame, and multiple planet gears are meshed between the sun gear and the internal gear ring; The second drive mechanism includes a second drive motor, a worm gear, and a worm. A key shaft is coaxially mounted on the sun gear. The worm gear is coaxially connected to the other end of the key shaft. The output end of the second drive motor is coaxially fixedly connected to the worm. The worm is drively connected to the worm gear.

3. The multi-wire cutting device with synchronously adjustable variable spacing according to claim 2, characterized in that... The synchronous transmission mechanism includes a synchronous belt and two synchronous pulleys. The synchronous pulleys are coaxially mounted on the key shaft, and the synchronous belt is connected between the two synchronous pulleys of the variable pitch drive mechanism on both sides.

4. The multi-wire cutting device with synchronously adjustable variable spacing according to claim 3, characterized in that... The synchronous belt and the synchronous pulley are driven by gear meshing.

5. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 1, characterized in that... A second bearing is provided between the driven base plate and the frame.

6. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 1, characterized in that... The spacing of the threaded grooves at one end near the middle of the variable pitch screw is the same as the thickness of the roller assembly.

7. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 1, characterized in that... The formula for calculating the pitch of the threaded groove is: Where m refers to the thread groove for which the pitch needs to be calculated within the same group of variable pitch thread grooves. D is the maximum spacing between thread grooves, and d is the minimum spacing between thread grooves.

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