A high-efficiency variable pitch multi-wire cutting device

Abstract

The application provides a multi-wire cutting device with high efficiency and variable pitch, which comprises a variable pitch mechanism, an adjusting mechanism, a driving mechanism and a supporting part; the variable pitch mechanism comprises counter-rotating screws and rollers; the counter-rotating screws are provided with a plurality of groups of symmetrical threads, each group of symmetrical threads is equipped with a plurality of rollers at equal intervals, and the rollers comprise central rollers, left rollers and right rollers; on each group of symmetrical threads, the rollers on the left side of the central rollers are the left rollers, and the rollers on the right side of the central rollers are the right rollers; the driving mechanism is used for transmitting torque to the rollers; the adjusting mechanism is used for synchronously rotating the counter-rotating screws in the same direction, so that the distance between the plurality of rollers in each group is expanded or reduced, and the purpose of high efficiency and variable pitch is achieved.

Description

Technical Field

[0001] This invention relates to the field of cutting equipment technology, and more specifically, to a high-efficiency variable-pitch multi-wire cutting device. Background Technology

[0002] Currently, commonly used multi-wire cutting equipment has a limited range of applications due to its low efficiency in adjusting the cutting spacing and the need for manual adjustment. It is only suitable for cutting stone products of specific specifications, resulting in limited cutting efficiency and poor flexibility.

[0003] In view of the above, this application is made after studying the prior art. Summary of the Invention

[0004] This invention provides a high-efficiency variable-pitch multi-wire cutting device, aiming to overcome the shortcomings of non-adjustable pitch multi-wire cutting equipment. The variable-pitch multi-wire cutting device of this invention can efficiently adjust the cutting pitch of the multi-wire cutting equipment, and can realize the simultaneous expansion or contraction of the pitch of multiple rollers towards the center. It has the characteristics of high efficiency, good stability, high precision, and good flexibility. It is suitable for the production of customized projects such as non-standard size stone slabs, and is suitable for changing market demands, with a wider range of applications.

[0005] To solve the above-mentioned technical problems, the present invention provides a high-efficiency variable-pitch multi-wire cutting device, including a frame, and further including a variable-pitch mechanism, an adjusting mechanism, and a driving mechanism mounted on the frame; wherein, the two ends of the variable-pitch mechanism are rotatably connected to the frame, and the variable-pitch mechanism includes multiple counter-rotating screws and multiple roller sets for connecting and setting the cutting wires; wherein, multiple symmetrical thread groups are spaced apart on the counter-rotating screws, and the symmetrical thread groups include multiple symmetrically arranged left-hand threads and right-hand threads, and each roller set includes multiple left rollers respectively matched with the left-hand threads and right-hand threads respectively matched with the right-hand threads. The system includes a matching right roller and a center roller positioned in the middle of the symmetrical threaded assembly; the counter-rotating screws between adjacent roller sets are arranged in a smooth rod configuration; the drive mechanism drives the pitch-changing mechanism and includes a servo motor and a main shaft; the roller sets are slidably mounted on the main shaft and adapted to rotate with the main shaft; the adjustment mechanism connects to the counter-rotating screws and can drive multiple counter-rotating screws to rotate synchronously in the same direction, so that when the counter-rotating screws rotate, the left and right rollers of each roller set can be controlled to move closer or further apart, thereby adjusting the spacing of the cutting lines on the roller sets.

[0006] As a further optimization, the pitch of each left-hand and right-hand thread in each symmetrical thread group gradually increases from the side closest to the center roller towards both sides, and is set in an odd ratio.

[0007] As a further optimization, the maximum cutting spacing of the cutting line is Where Lmin is the minimum cutting interval, and n is the number of rollers in each roller group.

[0008] As a further optimization, the length of the optical rod is Where d is the thickness of the roller.

[0009] As a further optimization, the adjustment mechanism includes an internal gear ring rotatably mounted on the frame, a sun gear coaxially mounted with the main shaft, and a plurality of planetary gears connected between the internal gear ring and the sun gear. Each planetary gear is connected to a counter-rotating screw, and when the sun gear rotates, it can drive each counter-rotating screw to rotate synchronously and in the same direction. The counter-rotating screws are evenly distributed around the circumference of the main shaft.

[0010] As a further optimization, the internal gear ring is fixed to the frame by a cylindrical roller bearing; the planetary gear is connected to the counter-rotating screw by a flat key to achieve synchronous rotation of the planetary gear and the counter-rotating screw; the sun gear is connected to the worm gear by a flat key shaft to achieve synchronous rotation of the sun gear and the worm gear.

[0011] As a further optimization, a dial is provided on the worm gear.

[0012] As a further optimization, one end of the counter-rotating screw is connected to the frame via the planetary gear, and a base plate is rotatably connected to the frame on the other side via a cylindrical roller bearing. The other end of the counter-rotating screw is rotatably connected to the base plate via a bearing. The end of the main shaft away from the sun gear passes through the base plate and is connected to the servo motor.

[0013] As a further optimization, the worm gear is connected to a worm, which is driven by a stepper motor.

[0014] As a further optimization, a keyway is provided at the center hole of the roller assembly, and a guide key is provided in the keyway. The roller assembly cooperates with the main shaft through the guide key so that the main shaft can drive the roller assembly to rotate.

[0015] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0016] This application provides a high-efficiency variable-pitch multi-wire cutting device suitable for variable-pitch multi-wire cutting in stone processing. Firstly, it allows for the simultaneous expansion or contraction of the spacing between multiple rollers towards the center without disassembling the rollers, significantly reducing the time required to change the cutting spacing and improving production efficiency. Secondly, the invention enables self-locking of the counter-rotating screw, ensuring smooth operation of the wire cutting process. Thirdly, thanks to the high transmission ratio of the worm gear combination, the adjustment of the roller group spacing achieves a high level of precision. Finally, the variable-pitch characteristic makes this invention more flexible than current wire cutting equipment. This invention is suitable for production scenarios requiring high-efficiency and high-precision processing, making it easy to promote and apply. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an assembly drawing of a high-efficiency variable-pitch multi-wire cutting device according to the present invention.

[0019] Figure 2 This is a side view of a high-efficiency variable-pitch multi-wire cutting device according to the present invention.

[0020] Figure 3 This is a schematic diagram of the counter-rotating screw of a high-efficiency variable-pitch multi-wire cutting device according to the present invention.

[0021] Figure 4 This is a front view of a high-efficiency variable-pitch multi-wire cutting device according to the present invention.

[0022] Figure 5 This is a schematic diagram of the base plate assembly of a high-efficiency variable-pitch multi-wire cutting device according to the present invention.

[0023] The markings in the diagram are: Reverse screw-1, Roller wheel-2, Planetary gear set-3, Worm gear mechanism-4, Main spindle-5, Servo motor-6, Frame-7, Cylindrical roller bearing-8, Ordinary bearing-9, Base plate-10, Diamond wire-11, Stepper motor-12, Left-hand thread-101, Right-hand thread-102, Left roller wheel-201, Right roller wheel-202, Center roller wheel-203, Sun gear-301, Planetary gear-302, Internal gear ring-303, Worm gear-401, Worm-402. Detailed Implementation

[0024] 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.

[0025] Depend on Figures 1 to 5 As shown, this embodiment of the invention provides a high-efficiency variable-pitch multi-wire cutting device, including a frame, and further including a variable-pitch mechanism, an adjustment mechanism, and a drive mechanism mounted on the frame. The variable-pitch mechanism is rotatably connected to the frame at both ends. The variable-pitch mechanism includes multiple counter-rotating screws 1 and multiple sets of rollers 2 for connecting and setting the cutting wire. In this embodiment, the cutting wire is diamond wire 11. Multiple symmetrical thread groups are spaced apart on the counter-rotating screws 1. Each symmetrical thread group includes multiple symmetrically arranged left-hand threads 101 and right-hand threads 102. Each set of rollers 2 includes a left roller 201 matching the left-hand thread 101, a right roller 202 matching the right-hand thread 102, and a center roller 203 located in the middle of the symmetrical thread group. The counter-rotating screws 1 between adjacent sets of rollers 2 are smooth rods. The drive mechanism is used to drive the variable pitch mechanism. It includes a servo motor 6 and a main shaft 5. The rollers 2 are slidably mounted on the main shaft 5 and are adapted to rotate with the main shaft 5. The adjustment mechanism is connected to the counter-rotating screw 1 and can drive multiple counter-rotating screws 1 to rotate synchronously in the same direction. When the counter-rotating screw 1 rotates, it can control the left roller 201 and right roller 202 of each roller 2 group to move closer or further away from each other, thereby controlling the spacing between each roller 2 in the roller 2 group. This adjusts the spacing of the cutting lines on the roller 2 group to complete the variable pitch cutting.

[0026] The number of different pitches and the minimum cutting distance in each group of symmetrical thread sets can be customized according to requirements. If each group of symmetrical thread sets needs to assemble n rollers 2, including the left roller 201, right roller 202, and center roller 203, and the minimum cutting distance is Lmin, then the maximum cutting distance is... The number of rollers 2 n, the minimum cutting distance Lmin, and the maximum cutting distance Lmax on each symmetrical thread group are related. On each symmetrical thread group, all rollers 2 are symmetrically distributed.

[0027] For example, in this example, each group of rollers has 9 rollers, the minimum cutting distance Lmin is 15mm, and the maximum cutting distance Lmax is 20mm. Since the number of rollers in this example is odd, one of the rollers, namely the center roller 203, is fixed in the middle position of each group of symmetrical thread sets to achieve symmetrical distribution; the length of the smooth rod between each group of symmetrical thread sets of the counter-rotating screw 1 is... In this example, the distance is 14mm. This is because the thickness d of roller 2 is 6mm. Therefore, when the cutting distance is adjusted to the maximum, the distance between all rollers 2 on the counter-rotating screw 1 is 20mm.

[0028] Furthermore, in this embodiment, five sets of symmetrical thread groups and roller groups are provided. Each symmetrical thread group has four left-hand threads 101 and four right-hand threads 102. The roller groups have four left rollers 201 corresponding to the left-hand threads 101 and four right rollers 202 corresponding to the right-hand threads 102. In this embodiment, the left rollers 201 and right rollers 202 are connected to the threads via guide keys. Therefore, when multiple counter-rotating screws 1 rotate simultaneously, they can move axially, thereby adjusting the spacing and thus adjusting the cutting line spacing. The center roller 203 does not have a guide key between it and the counter-rotating screw 1 and will not move left or right.

[0029] Each group of symmetrical threads has multiple pitches. The pitch of each left-hand thread 101 and right-hand thread 102 gradually increases from the side closest to the central roller 203 towards both sides, and is set in an odd ratio, such as 1:3:5:7. For example, in each group of symmetrical threads, there are 4 left-hand threads 101. The pitch of the left-hand thread 101 closest to the center is 1mm, the pitch of the second adjacent left-hand thread 101 to the outside is 3mm, and so on, such as 5mm, 7mm, etc., while the right-hand thread 102 is the same. In one embodiment, when the pitch is changed, the distance between adjacent left rollers changes from 1mm to 2mm when the counter-rotating screw 1 rotates one revolution.

[0030] Preferably, the adjustment mechanism includes a planetary gear set 3 and a worm gear mechanism 4. One end of the counter-rotating screw 1 is connected to one side of the frame via a planetary gear 302, and a base plate 10 is rotatably connected to the other side of the frame via a cylindrical roller bearing 8. The other end of the counter-rotating screw 1 is rotatably connected to the base plate 10 via a common bearing 9. The planetary gear set 3 includes an internal gear ring 303 rotatably mounted on the frame, a sun gear 301 coaxially mounted with the main shaft 5, and multiple planetary gears 302 connected between the internal gear ring 303 and the sun gear 301. Each planetary gear 302 is connected to one counter-rotating screw 1, and the counter-rotating screws 1 are evenly distributed around the circumference of the main shaft 5. When the sun gear 301 rotates, it drives each counter-rotating screw 1 to rotate synchronously and in the same direction.

[0031] The internal gear ring 303 is fixed to the frame by a cylindrical roller bearing 8; the planetary gear 302 is connected to the counter-rotating screw 1 via a key to achieve synchronous rotation between the planetary gear 302 and the counter-rotating screw 1; the sun gear 301 is connected to the worm gear 401 via a key shaft to achieve synchronous rotation between the sun gear 301 and the worm gear 401. Simultaneously, the worm gear 401 is connected to a worm 402, which is driven by a stepper motor 12, thereby rotating the counter-rotating screw 1. Specifically, in this embodiment, four sets of counter-rotating screws 1 can be provided, and the four sets of counter-rotating screws 1 are evenly distributed around the circumference of the main shaft 5.

[0032] Preferably, the end of the main shaft 5 furthest from the sun gear 301 passes through the base plate 10 and connects to the servo motor 6. In this embodiment, a keyway is formed at the center hole of the roller group 2, and a guide key is provided in the keyway. The roller group 2 transmits torque through the guide key and the main shaft 5, so that the main shaft 5 can drive the roller group 2 to rotate. At the same time, the axial displacement of the roller 2 is not restricted, so that the roller group 2 can be adjusted along the length direction of the main shaft 5 when the adjustment mechanism is adjusted. In this embodiment, the base plate 10 has a total of five holes. The hole in the middle is connected to the main shaft 5 through the guide key, and the four holes on the periphery are connected to the counter-rotating screw 1 through ordinary bearings 9. It should be noted that in other embodiments, the number of counter-rotating screws 1 and the number of thread groups are not specifically limited, and the length of the threads can also be adjusted according to actual needs.

[0033] Preferably, the worm gear 401 is equipped with a scale. During operation, the servo motor 6 is stopped first, and then the worm gear 402 is adjusted so that the pointer points to the corresponding scale value. This allows the spacing of the roller wheel 2 sets to be adjusted to the required position, thus realizing variable-pitch multi-wire cutting.

[0034] This embodiment achieves efficient adjustment of the cutting spacing by using the synchronous, unidirectional rotation of the counter-rotating screw 1 to adjust the spacing between the rollers within each roller group 2 and between roller groups 2 in general. With the servo motor 6 de-energized, rotating the worm gear 402 clockwise from the front view direction retracts the rollers within each roller group 2; similarly, rotating the worm gear 402 counter-clockwise expands the spacing between roller groups 2. In this embodiment, the maximum spacing between each roller 2 is 20mm, and the minimum spacing is 15mm. When adjusted to the maximum spacing, the spacing between each roller group 2 is also 20mm; when adjusted to the minimum spacing, the spacing between each roller group 2 is 110mm. It is important to note that the rollers 2 and the counter-rotating screw 1 are always in full thread engagement.

[0035] Preferably, with this embodiment, the roller 2 can be adjusted without disassembling, and the self-locking effect of the worm gear 401 and worm 402 can achieve the self-locking of the counter-rotating screw 1 during the wire cutting process. In terms of scale adjustment, the transmission ratio between the worm 402 and the counter-rotating screw 1 is large, which makes the spacing adjustment have the characteristics of high efficiency, high stability, high precision and high flexibility. It is suitable for production scenarios with high efficiency and high precision processing requirements, making the present invention easy to promote and apply.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A high-efficiency variable-pitch multi-wire cutting device, comprising a frame, characterized in that, It also includes a pitch-changing mechanism, an adjustment mechanism, and a drive mechanism mounted on the frame; wherein, the two ends of the pitch-changing mechanism are rotatably connected to the frame, and the pitch-changing mechanism includes multiple counter-rotating screws and multiple roller sets for connecting and setting the cutting line; wherein, multiple symmetrical thread sets are spaced apart on the counter-rotating screws, and the symmetrical thread sets include multiple symmetrically arranged left-hand threads and right-hand threads, each roller set including multiple left rollers that match the left-hand threads, right rollers that match the right-hand threads, and a center roller set in the middle of the symmetrical thread set; the counter-rotating screws between adjacent roller sets are arranged as smooth rods; The drive mechanism, which drives the pitch-changing mechanism, includes a servo motor and a main shaft. The roller set is slidably mounted on the main shaft and adapted to rotate with the main shaft. The adjustment mechanism is connected to the counter-rotating screw and can drive multiple counter-rotating screws to rotate synchronously in the same direction. When the counter-rotating screw rotates, it can control the left and right rollers of each roller set to move closer or further apart, thereby adjusting the spacing of the cutting lines on the roller set. In each group of symmetrical thread sets, the pitch of each left-hand and right-hand thread gradually increases from the side closest to the center roller towards both sides, and is arranged in an odd ratio. The maximum cutting spacing of the cutting line is Where Lmin is the minimum cutting spacing, and n is the number of rollers in each roller group; The length of the optical rod is Where d is the thickness of the roller.

2. The high-efficiency variable-pitch multi-wire cutting device according to claim 1, characterized in that... The adjustment mechanism includes an internal gear ring rotatably mounted on the frame, a sun gear coaxially mounted with the main shaft, and a plurality of planetary gears connected between the internal gear ring and the sun gear. Each planetary gear is connected to a counter-rotating screw, and when the sun gear rotates, it can drive each counter-rotating screw to rotate synchronously and in the same direction. The counter-rotating screws are evenly distributed around the circumference of the main shaft.

3. The high-efficiency variable-pitch multi-wire cutting device according to claim 2, characterized in that... The internal gear ring is fixed to the frame by a cylindrical roller bearing; the planetary gear is connected to the counter-rotating screw by a key to achieve synchronous rotation of the planetary gear and the counter-rotating screw; the sun gear is connected to the worm gear by a key shaft to achieve synchronous rotation of the sun gear and the worm gear.

4. The high-efficiency variable-pitch multi-wire cutting device according to claim 3, characterized in that... The worm gear is equipped with a dial.

5. The high-efficiency variable-pitch multi-wire cutting device according to claim 3, characterized in that... One end of the counter-rotating screw is connected to the frame via the planetary gear, and a base plate is rotatably connected to the frame on the other side via a cylindrical roller bearing. The other end of the counter-rotating screw is rotatably connected to the base plate via a bearing. The end of the main shaft away from the sun gear passes through the base plate and is connected to the servo motor.

6. The high-efficiency variable-pitch multi-wire cutting device according to claim 3, characterized in that... The worm gear is connected to a worm, which is driven by a stepper motor.

7. The high-efficiency variable-pitch multi-wire cutting device according to claim 3, characterized in that... A keyway is provided at the center hole of the roller assembly, and a guide key is provided in the keyway. The roller assembly cooperates with the main shaft through the guide key so that the main shaft can drive the roller assembly to rotate.

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