Multi-wire cutting device capable of synchronously adjusting variable spacing

Abstract

The invention provides a multi-wire cutting device capable of synchronously adjusting variable spacing, which comprises a rack, a variable spacing driving mechanism, a roller wheel group, a cutting wire, a second driving mechanism and a synchronous transmission mechanism, the variable-pitch driving mechanism comprises a first driving mechanism used for driving the outer roller wheels to rotate to achieve cutting operation and a variable-pitch assembly used for adjusting the distance between the roller wheel sets. When the distance is adjusted, the roller wheel sets do not need to be detached, and the distance between the roller wheel sets can be synchronously adjusted only through motor control; in the variable-pitch multi-wire cutting machining process, stable operation of the wire cutting machine can be achieved, and due to the small step angle of the stepping motor, the high transmission ratio of the worm gear and the worm and the wide-range transmission ratio of the planetary gear set in the aspect of adjustment, distance adjustment of the variable-pitch multi-wire cutting machine has the beneficial effects of being high in efficiency, stability, precision and flexibility; and the method is suitable for production scenes with machining requirements of high efficiency, high precision and wide cutting range, so that the method is easy to popularize and apply.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting equipment, and in particular to a multi-wire cutting device capable of synchronously adjusting a variable spacing. Background Art

[0002] The commonly used multi-wire cutting equipment currently has a limited scope of application due to its limited cutting spacing adjustment range, inability to adjust simultaneously and non-automatic control. It is only suitable for cutting stone products of specific specifications, and has limited cutting efficiency, poor flexibility and a limited cutting width range.

[0003] In view of this, the applicant filed this application after studying the existing technology. Summary of the invention

[0004] The present invention provides a multi-wire cutting device with synchronously adjustable variable spacing, aiming to improve at least one of the above technical problems.

[0005] To solve the above technical problems, the present invention provides a multi-wire cutting device with synchronously adjustable variable spacing, comprising a frame, a roller wheel group and a cutting line connected to the roller wheel group, and also comprising a variable pitch drive mechanism, wherein two groups of variable pitch drive mechanisms are arranged on both sides of the frame, and multiple roller wheel groups are configured on the variable pitch drive mechanism; the variable pitch drive mechanism comprises a first drive mechanism and a variable pitch assembly, the roller wheel group is connected to the first drive mechanism to drive the roller wheel group to rotate; the variable pitch assembly is connected to each roller wheel group to adjust the spacing between each roller wheel group on the variable pitch mechanism; further comprising a second drive mechanism, the second drive mechanism is connected to one side of the variable pitch assembly to serve as a driving source for the variable pitch assembly; further comprising a synchronous transmission mechanism, the synchronous transmission mechanism is connected between the variable pitch assemblies on both sides.

[0006] As a further optimization, the roller wheel group includes an inner roller wheel, an outer roller wheel and a first bearing, the first bearing is connected and arranged between the outer circumference of the inner roller wheel and the inner circumference of the outer roller wheel, and the cutting line is configured on the outer roller wheel.

[0007] As a further optimization, the first driving mechanism includes a first driving motor, a driving base plate, a driven base plate and multiple driving rods, the first driving motor is installed and fixed on the frame, the output end of the first driving motor is coaxially fixed on the driving base plate, the driven base plate is rotatably connected to the frame, the driving rod is fixedly connected between the driving base plate and the driven base plate, and the multiple driving rods are arranged in a circular array on the driving base plate; the driving rod passes through the outer roller wheel and is slidably connected.

[0008] As a further optimization, the variable pitch assembly includes a planetary gear set and multiple variable pitch screws, the planetary gear set is coaxially arranged with the roller wheel set; the variable pitch screw is coaxially fixed on the planetary gear of the planetary gear set; the variable pitch screw is symmetrically arranged with two groups of variable pitch thread groove groups, the variable pitch thread groove group is provided with multiple thread grooves with different pitches, one end of the thread groove gradually converges at the middle of the variable pitch screw, and the other end is gradually dispersed toward the end away from the middle; on the same busbar of the variable pitch screw, the thread grooves are arranged at equal intervals; the inner roller wheel is penetrated by a connecting hole suitable for the variable pitch screw to pass through, and a protrusion that is adapted to be slidably connected to the thread groove is formed on the inner side wall of the connecting hole.

[0009] As a further optimization, the planetary gear set includes a sun gear, planetary gears 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 includes a second driving motor, a worm wheel and a worm, a flat key shaft is coaxially arranged on the sun gear, the worm wheel is coaxially connected to the other end of the flat key shaft, the output end of the second driving motor is coaxially fixedly connected to the worm, and the worm is transmission connected to the worm wheel.

[0010] As a further optimization, the synchronous transmission mechanism includes 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 variable pitch drive mechanisms on both sides.

[0011] As a further optimization, the synchronous belt and the synchronous wheel are driven by teeth engagement.

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

[0013] As a further optimization, the spacing of the thread grooves near one end of the middle of the variable pitch screw is the same as the thickness of the roller wheel assembly.

[0014] As a further optimization, the pitch calculation formula of the thread groove is: Wherein, m refers to the thread groove of the same set of variable pitch thread grooves for calculating the pitch, n = 2·m; D is the maximum spacing between the thread grooves, and d is the minimum spacing between the thread grooves.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects:

[0016] 1. The present invention uses the first driving mechanism as the rotation source of the roller wheel group, so that the driving rod can stabilize the transmission torque without constraining the axial displacement of the roller wheel group, and by arranging the roller wheel group on the pitch variable assembly, the pitch variable assembly can realize precise pitch control of multiple roller wheel groups.

[0017] 2. The present invention combines an inner roller wheel, an outer roller wheel and a first bearing to form a roller wheel group, so that the first driving mechanism can drive the outer roller wheel to rotate to achieve high-speed cutting of the cutting line, while the inner roller wheel is restricted by the pitch variable component to remain relatively still, thereby ensuring that the position remains stable during rotational cutting.

[0018] 3. The synchronous transmission mechanism cooperates with the toothed synchronous wheels and synchronous belts to realize the synchronous transmission between the two sets of driving pitch changing mechanisms, so that the roller wheel groups on both sides can accurately perform synchronous pitch changing operations. When adjusting the spacing, the roller wheel group does not need to be disassembled, and the spacing of the roller wheel group can be synchronously adjusted only by controlling the motor.

[0019] 4. With the second driving mechanism as the driving source, the self-locking of the worm wheel and the worm and the continuous maintenance of torque by the second driving motor can realize the smooth operation of the cutting device. With the stepping motor as the second driving motor, a smaller step angle can be achieved to match the high transmission ratio of the worm wheel and the wide transmission ratio of the planetary gear set. This makes the spacing adjustment of the present invention have the characteristics of high efficiency, high stability, high precision and high flexibility. It is suitable for production scenarios with high efficiency, high precision and wide cutting range processing requirements, making the present invention easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a multi-wire cutting device with synchronously adjustable variable spacing according to the present invention;

[0022] Figure 2 It is a schematic diagram of one side structure of a multi-wire cutting device with synchronously adjustable variable spacing according to the present invention;

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

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

[0025] Figure 5 is a schematic diagram of the cross-sectional structure of the upper roller wheel assembly of the variable pitch drive mechanism of this embodiment;

[0026] Figure 6It is a schematic diagram of the local structure of one end where the thread grooves converge in this embodiment.

[0027] Markings in the figure: 1, frame; 2, roller wheel group; 3, cutting line; 4, first driving mechanism; 5, pitch changing assembly; 6, second driving mechanism; 7, synchronous transmission mechanism; 201, inner roller wheel; 202, outer roller wheel; 203, first bearing; 401, first driving motor; 402, driving base plate; 403, driven base plate; 404, driving rod; 405, second bearing; 501, planetary gear set; 502, pitch changing screw; 601, second driving motor; 602, worm gear; 603, worm; 701, synchronous belt; 702, synchronous wheel; 2011, connecting hole; 2012, bump; 5011, sun gear; 5012, planetary gear; 5013, inner gear ring; 5014, flat key shaft; 5021, pitch changing thread groove set; 50211, thread groove. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work 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 drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Depend on Figures 1 to 6As shown, an embodiment of the present invention provides a multi-wire cutting device with synchronously adjustable variable pitch, comprising a frame 1, a pitch-variable driving mechanism, a roller wheel group 2 and a cutting line 3, wherein two sets of pitch-variable driving mechanisms are fixedly arranged on both sides of the frame 1 and are arranged in parallel, a plurality of roller wheel groups 2 are arranged on the pitch-variable driving mechanism, and the cutting line 3 is connected and arranged between the corresponding roller wheel groups 2 on the two sets of pitch-variable driving mechanisms; the pitch-variable driving mechanism comprises a first driving mechanism 4 and a pitch-variable assembly 5, and the roller wheel group 2 is arranged on the output shaft of the first driving mechanism 4 to drive the roller wheel group 2 to rotate, and when the roller wheel group 2 rotates, the roller wheel group 2 rotates. When group 2 rotates, it drives the cutting line 3 to cut, wherein the two sets of variable pitch drive mechanisms should maintain an appropriate distance to ensure the tension required for the cutting line 3 to be maintained during cutting; the roller wheel group 2 is connected to the variable pitch component 5, and the variable pitch component 5 is used to adjust the distance between each roller wheel group 2 on the same variable pitch mechanism; wherein, a synchronous transmission mechanism 7 is also provided which is connected between the two sets of variable pitch drive mechanisms to achieve synchronization of the two sets of variable pitch components 5 when changing pitch, so that the two roller wheel groups 2 on the same cutting line 3 can change synchronously to ensure stability during cutting.

[0030] It also includes a second driving mechanism 6, the output end of the second driving mechanism 6 is connected to the input end of the pitch changing assembly 5 on one side, and the second driving mechanism 6 drives the pitch changing assembly 5 to be adjusted, thereby driving the multiple roller wheel groups 2 on the pitch changing assembly 5 to change the pitch, wherein the pitch change here refers to the change in the spacing between the multiple roller wheel groups 2 on the same pitch changing driving mechanism.

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

[0032] Furthermore, the first drive mechanism 4 includes a first drive motor 401, a drive base plate 402, a driven base plate 403 and a plurality of drive rods 404, wherein the first drive motor 401 is mounted and fixed on the frame 1, wherein the first drive motor 401 is arranged on one side of the variable pitch drive mechanism, in this embodiment, on its right side, and the output end of the second drive mechanism 6 is arranged on the other side, that is, on the left side, and is transmission-connected with the input end of the variable pitch assembly 5, so that the two will not affect each other. The output end of the first driving motor 401 is coaxially fixed on the driving base plate 402, and the driven base plate 403 is rotatably connected to the frame 1 through the second bearing 405, the second bearing 405 is a large radial cylindrical roller bearing, and the driving rod 404 is fixedly connected between the driving base plate 402 and the driven base plate 403 through a nut. Multiple driving rods 404 are arranged in a circular array on the driving base plate 402; the driving rod 404 passes through the outer roller wheel 202 and is arranged in a sliding connection, so as not to constrain the axial displacement movement of the outer roller wheel 202 on the driving rod 404. Among them, in this embodiment, three driving rods 404 are arranged, and the three driving rods 404 are arranged equidistantly and have the same distance from the axis of the roller wheel group 2. Therefore, when the first driving motor 401 is driven, the torque can be transmitted to the outer roller wheel 202 through the driving base plate 402 and the driving rod 404 to make it rotate. The three driving rods 404 drive the outer roller wheel 202 to rotate, which can 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 pitch changing assembly 5 includes a planetary gear set 501 and a plurality of pitch changing screws 502, wherein the planetary gear set 501 includes a sun gear 5011, planetary gears 5012 and an inner gear ring 5013, the inner gear ring 5013 is fixed on a mounting seat of the frame 1, and is connected on both sides, and a plurality of planetary gears 5012 are meshingly arranged between the sun gear 5011 and the inner gear ring 5013. In this embodiment, three planetary gears 5012 are arranged on the outer periphery of one sun gear 5011; the planetary gear set 501 is coaxially arranged with the roller wheel set 2; correspondingly, the three pitch changing screws 502 are coaxially fixed on the three planetary gears 5012 of the planetary gear set 501, respectively. Two groups of variable pitch thread groove groups 5021 are symmetrically arranged on the variable pitch screw 502. The two groups of variable pitch thread groove groups 5021 are symmetrically arranged on the variable pitch screw 502. The variable pitch thread groove groups 5021 are provided with a plurality of thread grooves 50211 with different pitches. The pitch here refers to the length of the thread groove 50211. In this embodiment, each group of variable pitch thread groove groups 5021 is provided with 5 thread grooves 50211, and each variable pitch screw 502 has 10 thread grooves 50211. One end of the thread grooves 50211 gradually converges at the middle of the variable pitch screw 502, and the other end gradually disperses toward the end away from the middle. The 5 thread grooves 50211 on the left side are dispersed to the left from one end of the middle to the other end, and the 5 thread grooves 50211 on the right side are dispersed to the right from one end of the middle to the other end, forming symmetry. Among them, on the same busbar of the variable pitch screw 502, even on any busbar, the 10 adjacent thread grooves 50211 in this embodiment are arranged at equal intervals. It should be noted that when the two thread grooves 50211 closest to the middle of the variable pitch screw 502 are arranged at equal intervals at their ends, the equal intervals of the left and right groups of 10 thread grooves 50211 can be achieved. Further, the inner roller wheel 201 is provided with a connecting hole 2011 suitable for the variable pitch screw 502 to pass through, and a protrusion 2012 adapted to be slidably connected to the thread groove 50211 is formed on the inner side wall of the connecting hole 2011. In contrast, in the present embodiment, 10 roller wheel groups 2 are provided, each roller wheel group 2 is respectively arranged on each thread groove 50211, and the spacing between the adjacent 10 roller wheel groups 2 is the same. When configured, the protrusions 2012 of the 10 roller wheel groups 2 are located in each thread groove 50211 on the same busbar, so that each roller wheel is also arranged at an equal spacing. When the second driving mechanism 6 drives the planetary gear set 501 to operate, it drives the three variable pitch screws 502 to rotate at the same time, so that the protrusions 2012 can stably move along the thread groove 50211 with the rotation of the variable pitch screw 502, so that the spacing between the roller wheel groups 2 after rotation is reduced or expanded at the same time, and the equal spacing is still maintained. And because the inner roller wheel 201 and the outer roller wheel 202 can rotate relative to each other, the outer roller wheel 202 and the inner roller wheel 201 do not affect each other when the spacing size is changed.It should be noted that the three variable pitch screws 502 are arranged in parallel with equal intervals, and the angles of their variable pitch thread groove groups 5021 are also correspondingly the same, so that the three variable pitch screws 502 can rotate synchronously when rotating, and because the three variable pitch screws 502 are simultaneously connected to the inner roller wheel 201, the inner roller wheel 201 is limited in rotation in the radial direction, so that when the variable pitch screw 502 rotates, it can drive the inner roller wheel 201 to achieve axial displacement.

[0035] Furthermore, the second drive mechanism 6 includes a second drive motor 601, a worm wheel 602 and a worm 603. A flat key shaft 5014 is coaxially arranged on the sun gear 5011, and the worm wheel 602 is coaxially connected to the other end of the flat key shaft 5014. In this embodiment, the second drive motor 601 is a stepping motor, and its output end is coaxially fixedly connected to the worm 603 to drive the worm 603 to rotate. The worm 603 and the worm wheel 602 are connected by meshing transmission, so that the worm wheel 602 is transmitted to the sun gear 5011 through the flat key shaft 5014 when rotating, and then the pitch-changing screw 502 is driven to rotate through the planetary gear set 501 to achieve the pitch change of the roller wheel set 2.

[0036] Preferably, it also includes a synchronous transmission mechanism 7, which 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 respectively arranged on the flat key shafts 5014 of the pitch-changing drive mechanisms on both sides, and are connected to the two synchronous wheels 702 through the synchronous belt 701 for transmission. When the second drive motor 601 on one side drives the pitch-changing assembly 5, the transmission is transmitted to the pitch-changing assembly 5 on the other side through the synchronous transmission mechanism 7, so that the synchronous pitch of both sides is realized. Among them, the synchronous belt 701 and the synchronous wheel 702 are driven by gearing to avoid slipping, and accurate synchronous transmission is realized with a constant transmission ratio, thereby accurately controlling the pitch change.

[0037] Preferably, in this embodiment, the distance between the thread grooves 50211 near the middle end of the pitch-changing screw 502, i.e., the shortest distance, is the same as the thickness of the roller wheel assembly 2. That is, when the roller wheel assembly 2 is adjusted by the pitch control to the end of the thread groove 50211 near the middle, each group of roller wheel assembly 2 can be completely fitted, so that the minimum cutting distance of the cutting line 3 is the sheet thickness of the roller wheel assembly 2.

[0038] Preferably, the pitch calculation formula of the thread groove 50211 is: Among them, m refers to the thread groove 50211 for calculating the pitch of the same variable pitch thread groove group 5021, n = 2·m, n is also the total number of roller wheel groups 2 on a variable pitch drive mechanism; D is the maximum spacing between the thread grooves 50211, and d is the minimum spacing between the thread grooves 50211. It should be noted that the spacing between the thread grooves 50211 refers to the spacing between adjacent thread grooves 50211, and no further details will be given below.

[0039] Preferably, in this 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 threads, a total of 10 thread grooves 50211, the left side is a left-handed thread, and the right side is a right-handed thread, wherein the spacing distance at the convergent ends of the thread grooves 50211, that is, the minimum spacing d is 6 mm, which is also the minimum cutting spacing, and the thickness of the roller wheel group 2 is also 6 mm; the spacing distance at the farthest dispersed ends of the thread grooves 50211, that is, the maximum spacing D is 50 mm, which is also the maximum cutting spacing; the total length of the variable pitch screw 502 is 456 mm, and the diameter is 15 mm; the pitch P is calculated. m When the pitch of the variable pitch screw 502 is the first one, that is, in this embodiment, each group of thread grooves 50211 is P1, P2, P3, P4, P5 from the middle to the outside. After calculation, they are 22mm, 66mm, 110mm, 154mm, and 198mm from small to large. When calculating, you can also calculate by first calculating the pitch of the largest thread groove 50211, for example: P max =P5, which is 198mm, so the adjacent smaller pitch is: P4=P5-(Dd), which is 154mm.

[0040] Thus, the present invention sets two sets of pitch-changing drive mechanisms on both sides of the frame 1, and performs synchronous transmission control of pitch-changing through the synchronous transmission mechanism 7, so that when the second drive mechanism 6 controls the pitch-changing assembly 5 to change the spacing of the roller wheel group 2, the pitch-changing is maintained synchronously, thereby changing the cutting spacing of the cutting line 3 to perform cutting operations, wherein the cutting line 3 is a diamond wire. At the same time, the first drive mechanism 4 cooperates with the outer roller wheel 202 through the drive rod 404, so that when the drive rod 404 transmits torque to the outer roller wheel 202, the outer roller wheel 202 can slide along the axial direction of the drive rod 404 for pitch-changing. At this time, the cutting line 3 cooperates with the outer roller wheel 202 to rotate and realize the cutting function, while the inner roller wheel 201 is in a relatively static state. When implementing pitch-changing, the first drive mechanism 4 is first stopped, and then the pitch-changing multi-wire cutting process can be realized after adjusting and controlling the pitch-changing through the second drive mechanism 6. It should be noted that the second drive motor 601 needs to be powered on throughout the entire process so that the second drive motor 601 can maintain torque throughout the entire process to further ensure the stability of the variable-pitch multi-wire cutting process.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-wire cutting device with synchronously adjustable variable spacing, comprising a frame, a roller wheel group and a cutting wire connected to the roller wheel group, characterized in that: It also includes a variable pitch drive mechanism, wherein two sets of variable pitch drive mechanisms are arranged on both sides of the frame, and a plurality of roller wheel groups are arranged on the variable pitch drive mechanism; The pitch-changing drive mechanism comprises a first drive mechanism and a pitch-changing assembly, the roller wheel group is connected to the first drive mechanism to drive the roller wheel group to rotate; the pitch-changing assembly is connected to each roller wheel group to adjust the distance between each roller wheel group on the pitch-changing mechanism; It also includes a second driving mechanism, which is connected to the pitch-changing assembly on one side and is used as a driving source for the pitch-changing assembly; and a synchronous transmission mechanism, which is connected between the pitch-changing assemblies on both sides.

2. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 1, characterized in that The roller wheel group includes an inner roller wheel, an outer roller wheel and a first bearing, the first bearing is connected and arranged between the outer circumference of the inner roller wheel and the inner circumference of the outer roller wheel, and the cutting line is configured on the outer roller wheel.

3. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 2, characterized in that The first driving mechanism includes a first driving motor, a driving base plate, a driven base plate and a plurality of driving rods. The first driving motor is installed and fixed on the frame. The output end of the first driving motor is coaxially fixed on the driving base plate. The driven base plate is rotatably connected to the frame. The driving rod is fixedly connected between the driving base plate and the driven base plate. The plurality of driving rods are arranged in a circular array on the driving base plate. The driving rod passes through the outer roller wheel and is slidably connected.

4. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 2, characterized in that The variable pitch assembly includes a planetary gear set and a plurality of variable pitch screws, the planetary gear set is coaxially arranged with the roller wheel set; the variable pitch screw is coaxially fixed on the planetary gear of the planetary gear set; the variable pitch screw is symmetrically arranged with two sets of variable pitch thread groove sets, the variable pitch thread groove set is provided with a plurality of thread grooves with different pitches, one end of the thread groove gradually converges at the middle of the variable pitch screw, and the other end is gradually dispersed toward the end away from the middle; on the same generatrix of the variable pitch screw, the thread grooves are arranged at equal intervals; a connecting hole suitable for the variable pitch screw to pass through is penetrated on the inner roller wheel, and a protrusion adapted for sliding connection with the thread groove is formed on the inner side wall of the connecting hole.

5. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 4, characterized in that The planetary gear set includes a sun gear, planetary gears and an inner gear ring, the inner gear ring is fixed on the frame, and a plurality of planetary gears are meshed and arranged between the sun gear and the inner gear ring; The second driving mechanism includes a second driving motor, a worm wheel and a worm. A flat key shaft is coaxially arranged on the sun gear. The worm wheel is coaxially connected to the other end of the flat key shaft. The output end of the second driving motor is coaxially fixedly connected to the worm, and the worm is transmission-connected to the worm wheel.

6. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 5, characterized in that The synchronous transmission mechanism includes 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 variable pitch drive mechanism on both sides.

7. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 6, characterized in that , the synchronous belt and the synchronous wheel are driven by teeth engagement.

8. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 3, characterized in that A second bearing is connected between the driven base plate and the frame.

9. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 4, characterized in that The spacing of the thread groove near one end of the middle part of the variable pitch screw is the same as the thickness of the roller wheel assembly.

10. A multi-wire cutting device with synchronously adjustable variable spacing according to claim 4, characterized in that , the pitch calculation formula of the thread groove is: Wherein, m refers to the thread groove whose pitch needs to be calculated for the same set of variable pitch thread grooves, n=2·m; D is the maximum spacing between the thread grooves, and d is the minimum spacing between the thread grooves.

Images