Stone wire saw cutting device and stone wire cutting method

Abstract

The invention relates to the technical field of wire cutting, in particular to a stone wire saw cutting device and a stone wire cutting method.The stone wire saw cutting device comprises a winding mechanism, a detection mechanism and a controller, the winding mechanism comprises two rollers, and the two rollers are distributed in a spaced mode and jointly used for arranging a cutting wire; the cutting line between the two rollers can be used for cutting stones; the detection mechanism comprises a first driving assembly and a detection piece, and the first driving assembly is in transmission connection with the detection piece and used for driving the detection piece to move so that the cutting line can enter or move out of the detection range of the detection piece; the controller is used for executing a first height obtaining step and a bow angle obtaining step; the first height obtaining step comprises the step of obtaining the height of the cutting line lifted by the stone according to the conditions that the cutting line enters and moves out of the detection range; in the step of bow angle obtaining, the bow angle of the cutting line is obtained according to the height of the cutting line lifted by the stone and the set distance. The cutting device and method can effectively improve the bow angle detection accuracy of the cutting line.

Description

Technical Field

[0001] The present invention relates to the technical field of wire cutting, and in particular to a stone wire saw cutting device and a stone wire cutting method. Background Art

[0002] Diamond wire cutting is one of the main technologies for stone cutting. Wire cutting has many advantages, such as high material yield, low energy consumption, and high flatness after cutting. Diamond wire for cutting stone refers to a wire with diamond particles electroplated on the surface of a metal cutting wire (usually a steel wire); when cutting, the diamond wire is retracted and released by a winding mechanism, and the diamond particles on the surface of the diamond wire can be used to efficiently cut the stone. When using diamond cutting wire to cut stone, if the speed at which the feeding mechanism delivers the stone to the cutting wire is too fast, it is easy to lift the diamond wire and produce a large wire bow angle, which can easily lead to wire breakage and even directly cause the waste stone. If the speed at which the feeding mechanism delivers the stone to the cutting wire is too slow, the wire bow angle is too small and the plate is easily bent (that is, the stone will bend and deform after cutting).

[0003] In order to ensure the quality of stone cutting and reduce the generation of waste, relevant technologies need to pay real-time attention to the size of the bow angle of the cutting line when performing wire cutting of stone; the methods of judging the size of the bow angle of the cutting line include workers observing with the naked eye, judging based on experience, or using optical equipment such as optical cameras to detect the bow angle of the cutting line.

[0004] However, the above methods for detecting the cutting line bow angle are difficult to accurately determine the cutting line bow angle. Summary of the invention

[0005] The purpose of the present invention includes providing a stone wire saw cutting device and a stone wire cutting method, wherein the cutting device and the method can effectively improve the accuracy of detecting the bow angle of the cutting line.

[0006] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a stone wire saw cutting device, comprising: The winding mechanism includes two rollers, which are spaced apart and are used together to set the cutting line, so that the cutting line between the two rollers can be used to cut the stone; The detection mechanism includes a first driving assembly and a detection member, the first driving assembly is in transmission connection with the detection member, and is used to drive the detection member to approach or move away from the cutting line in the vertical direction, so that the cutting line enters or moves out of the detection range of the detection member; A controller, which is used to execute a first height acquisition step and an arch angle acquisition step; wherein, the first height acquisition step includes acquiring the height at which the cutting wire is lifted by the stone according to the situation of the cutting wire entering and exiting the detection range; the arch angle acquisition step includes obtaining the arch angle of the cutting wire according to the height at which the cutting wire is lifted by the stone and a set distance; The set distance is: the distance from the position where the cutting wire is pulled out from one of the rollers along the horizontal direction to the intersection point where the detection piece extends vertically.

[0007] In an alternative embodiment, when the cutting wire enters the detection range, the detection piece detects the cutting wire; when the cutting wire exits the detection range, the detection piece does not detect the cutting wire; The controller is further configured to receive a first signal change of the detection piece when the cutting wire enters the detection range, and receive a second signal change of the detection piece when the cutting wire exits the detection range; Acquiring the height at which the cutting wire is lifted by the stone according to the situation of the cutting wire entering and exiting the detection range specifically includes: Obtaining the height at which the cutting wire is lifted by the stone according to the first signal change and the second signal change.

[0008] In an alternative embodiment, obtaining the height at which the cutting wire is lifted by the stone according to the first signal change and the second signal change specifically includes: When the first driving component drives the detection piece to approach vertically and detect the cutting wire, the controller acquires the first signal change; then the first driving component drives the detection piece to move away from the cutting wire vertically, so that when the detection piece does not detect the cutting wire, the controller acquires the second signal change, and records the position of the detection piece at this time as the first position; When the cutting wire is lifted by the stone until it is detected by the detection piece at the first position, the controller acquires the first signal change again; then the first driving component drives the detection piece to move away from the cutting wire vertically again, so that when the detection piece does not detect the cutting wire, the controller acquires the second signal change again, and records the position of the detection piece at this time as the second position; Obtaining the height at which the cutting wire is lifted by the stone according to the height difference between the second position and the first position.

[0009] In an alternative embodiment, the stone wire saw cutting device further includes a feeding mechanism for delivering the stone; the controller is further configured to control the feeding mechanism to reduce the speed of delivering the stone when the acquired arch angle of the cutting wire is greater than a first set angle.

[0010] In an alternative embodiment, the controller is further configured to execute the second height acquisition step and the arch angle acquisition step after a preset time when the speed of the feeding mechanism for delivering the stone is reduced; wherein, The second height acquisition step includes: again acquiring the height of the cutting line lifted by the stone according to the first signal change and the second signal change.

[0011] In an optional implementation manner, obtaining the height of the cutting line lifted by the stone again according to the first signal change and the second signal change specifically includes: When the first driving component drives the detection member to approach the cutting line vertically again and detects the cutting line, the controller obtains the first signal change; then the first driving component drives the detection member to move away from the cutting line vertically again, so that when the detection member does not detect the cutting line, the controller obtains the second signal change and records the position of the test detection member as the third position; According to the height difference between the third position and the first position, the height at which the cutting line is lifted by the stone is obtained.

[0012] In an optional embodiment, the controller is also used to control the feeding mechanism to increase the speed of delivering the stone when the acquired cutting line bow angle is smaller than a second set angle; wherein the first set angle is larger than the second set angle.

[0013] In an optional embodiment, the stone wire saw cutting device includes two detection mechanisms, and the two detection mechanisms are respectively located on both sides of the stone cut by the cutting wire; The controller is also used to execute the first height acquisition step and the bow angle acquisition step according to the two detection mechanisms respectively, and compare the bow angles of the cutting lines on the corresponding sides of the two detection mechanisms, and compare the bow angle of the cutting line with the larger angle with the first set angle.

[0014] In an optional embodiment, the detection element is a proximity switch or a limit switch.

[0015] In an optional embodiment, the multiple cutting lines are sequentially spaced apart along the axial direction of the roller; The detection mechanism also includes a second drive component, which is transmission-connected to the first drive component and used to drive the first drive component to drive the detection component to move along the direction in which the multiple cutting lines are spaced apart; or, the first drive component is transmission-connected to the detection component through the second drive component, the first drive component drives the second drive component and the detection component to vertically approach or move away from the cutting line, and the second drive component is used to drive the detection component to move along the direction in which the multiple cutting lines are spaced apart.

[0016] In a second aspect, the present invention provides a stone wire cutting method, which is used in the stone wire saw cutting device of any one of the aforementioned embodiments, and the stone wire cutting method comprises: Get the height of the cutting line lifted by the stone; The bow angle of the cutting line is obtained according to the height at which the cutting line is lifted by the stone and the set distance.

[0017] In an alternative embodiment, the stone wire cutting method further includes: reducing the speed of delivering the stone when the bow angle of the cutting wire is greater than a first set angle.

[0018] In an alternative embodiment, the stone wire cutting method further includes: increasing the speed of delivering the stone when the bow angle of the cutting wire is less than a second set angle.

[0019] The beneficial effects of the stone wire saw cutting device according to the embodiments of the present invention include: The stone wire saw cutting device provided by the embodiments of the present invention can cut the stone using the cutting wire provided on the roller, and when cutting the stone, the detection member can be used to detect the position of the cutting wire to obtain the height at which the cutting wire is lifted by the stone, and according to the height at which the cutting wire is lifted and the set distance, the bow angle of the cutting wire can be obtained; since the set distance is the distance from the position where the cutting wire is pulled out from one of the rollers along the horizontal direction to the intersection point extending vertically with the detection member, which is a fixed value, and according to the situation where the cutting wire enters and exits the detection range of the detection member, the height at which the cutting wire is lifted can be accurately obtained, so that the accurate bow angle of the cutting wire can be obtained according to the fixed set distance and the accurate height of the cutting wire, that is, the accuracy of detecting the bow angle of the cutting wire is improved.

[0020] The beneficial effects of the stone wire cutting method according to the embodiments of the present invention are similar to those of the aforementioned stone wire saw cutting device, for example: the accuracy of detecting the bow angle of the cutting wire is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 is a schematic structural diagram of the stone wire saw cutting device in the embodiments of the present invention; Figure 2 is a schematic partial structure diagram of the stone wire saw cutting device in the embodiments of the present invention Figure 1 ; Figure 3 is a schematic partial structure diagram of the stone wire saw cutting device in the embodiments of the present invention Figure 2 ; Figure 4 is a flowchart of the stone wire cutting method in the embodiments of the present invention.

[0023] Icons: 010 - Stone wire saw cutting device; 100 - Wire winding mechanism; 101 - Cutting wire; 110 - First roller; 120 - Second roller; 131 - First wire roller; 132 - Second wire roller; 200 - Detection mechanism; 210 - First drive assembly; 220 - Second drive assembly; 230 - Detection piece; 300 - Controller; 400 - Spraying mechanism; 410 - Spraying pipeline; 420 - Water valve; a - Set distance; b - Height. Detailed implementation manners

[0024] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0025] 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 present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0026] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] In addition, if terms such as "first", "second", etc. are only used for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0029] It should be noted that the features in the embodiments of the present invention can be combined with each other without conflict.

[0030] Please refer to Figure 1, this embodiment provides a stone wire saw cutting device 010, which includes a cutting wire 101 (specifically, a diamond wire), a wire winding mechanism 100, and a feeding mechanism (not shown in the figure); the cutting wire 101 is wound around the wire winding mechanism 100 to use the wire winding mechanism 100 to take in and release the cutting wire 101, so that the cutting wire 101 can reciprocate; the feeding mechanism is used to place the stone and can deliver the stone to be cut by the reciprocating cutting wire 101.

[0031] Further, the stone wire saw cutting device 010 further includes a controller 300. Both the wire winding mechanism 100 and the feeding mechanism are communicatively connected to the controller 300. The controller 300 is used to control the wire winding mechanism 100 to drive the cutting wire 101 to reciprocate, and is also used to control the feeding mechanism to deliver the stone to be cut by the cutting wire 101.

[0032] Optionally, the wire winding mechanism 100 includes two rollers (hereinafter referred to as the first rollers 110) and two second rollers 120. The two first rollers 110 and the two second rollers 120 are arranged in a rectangular array, and the two second rollers 120 are correspondingly distributed above the two first rollers 110; the two first rollers 110 and the two second rollers 120 are jointly used to arrange the cutting wire 101, and the cutting wire 101 segment between the two first rollers 110 is used to cut the stone.

[0033] It should be understood that in other embodiments, the wire winding mechanism 100 may only include two first rollers 110; or, in other embodiments, in addition to the two first rollers 110 and the two second rollers 120, at least one third roller may be further included, which is not specifically limited herein.

[0034] Optionally, the wire winding mechanism 100 further includes four parallel power components. The four power components are respectively and communicatively connected to the two first rollers 110 and the two second rollers 120 to drive the first rollers 110 and the second rollers 120 to rotate forward and backward, and then drive the cutting wire 101 to reciprocate, so that the reciprocating movement of the cutting wire 101 segment between the two first rollers 110 can be used to realize the cutting of the stone.

[0035] Optionally, the power component includes a servo driver and a motor electrically connected to the servo driver. The motor is communicatively connected to the corresponding first roller 110 or second roller 120; wherein, the servo drivers of the four power components are in parallel, and the servo driver is communicatively connected to the controller 300 to facilitate using the controller 300 to control the servo driver to drive the motor to start and stop. Of course, in other embodiments, the power component may only include a motor.

[0036] Optionally, the wire winding mechanism 100 further includes a first wire roller 131 and a second wire roller 132, both the first wire roller 131 and the second wire roller 132 are used for winding the cutting wire 101; wherein, the cutting wire 101 is an integral diamond wire, which can pay off the wire from one of the first wire roller 131 and the second wire roller 132, and after winding multiple turns around the two first rollers 110 and the two second rollers 120 (that is, multiple segments of the cutting wire 101 are distributed at intervals along the axial direction of the first roller 110 between the two first rollers 110 and the two second rollers 120), it exits from the other of the first wire roller 131 and the second wire roller 132; the cutting process includes: paying off the wire from the first wire roller 131 and taking in the wire at the second wire roller 132 to complete a forward cutting, and then paying off the wire from the second wire roller 132 and taking in the wire at the first wire roller 131 to complete a reverse cutting, and so on in a cycle; wherein, during the reverse cutting, part of the wire that has undergone forward cutting remains on the second wire roller 132, so as to achieve the purpose of renewing and supplementing new wire.

[0037] Optionally, the stone wire saw cutting device 010 further includes a spraying mechanism 400 arranged above the wire winding mechanism 100. The spraying mechanism 400 includes a spraying pipeline 410 and a water valve 420 arranged on the spraying pipeline 410. The spraying pipeline 410 is distributed above the first roller 110 and the second roller 120 and is used for spraying water downward to cool the cutting wire 101 and can take away the powder generated after cutting; the water valve 420 is used to control the opening and closing of the spraying pipeline 410. Among them, when the water valve 420 closes the spraying pipeline 410, no water is sprayed out from the spraying pipeline 410, and when the water valve 420 opens the spraying pipeline 410, water will be sprayed out from the spraying pipeline 410.

[0038] Optionally, the feeding mechanism is used for placing the stone and can drive the stone to lift, so that during the process of driving the stone to rise, the stone can be cut by the cutting wire 101. The structure and working principle of the feeding mechanism are similar to those in the related art and will not be elaborated here.

[0039] It should be noted here that when the feeding mechanism drives the stone to rise for cutting the stone with the cutting wire 101, the cutting wire 101 needs to reciprocally scrape on the stone multiple times to use the diamond particles on the surface of the cutting wire 101 to slide out cutting marks on the stone, so as to achieve the purpose of stone cutting; when the stone is fed (that is, when the feeding mechanism drives the stone to rise until it abuts against the cutting wire 101 segment between the two first rollers 110), different feeding speeds will cause the cutting wire 101 to be subjected to different tension forces. When the feeding speed is too fast, the cutting wire 101 has no time to complete the cutting, and the stone has a large abutment against the cutting wire 101 segment between the two first rollers 110, resulting in a large tension force on this cutting wire 101 segment. The cutting wire 101 will deflect to form an angle θ (that is, the bow angle of the cutting wire 101) relative to when the stone is not cut; among them, the faster the feeding speed, the greater the tension force provided by the stone on the cutting wire 101 segment between the two first rollers 110, and the larger the angle θ; the slower the feeding speed, the smaller the tension force provided by the stone on the cutting wire 101 segment between the two first rollers 110, and the smaller the angle θ.

[0040] In the related art, when using a cutting wire to cut a stone, since the cutting wire moves at a high speed and it is impossible to touch the cutting wire during stone cutting, it is necessary to stop the stone wire saw cutting device to detect the size of the bow angle of the cutting wire. This detection method has high requirements for personnel detection, has a certain degree of danger, and extremely delays the efficiency of stone cutting. In order to improve the detection efficiency of the bow angle of the cutting wire, there is also a related art that uses the method of manual visual observation to judge the size of the bow angle of the cutting wire by experience, or uses optical devices such as optical cameras to detect the bow angle of the cutting wire.

[0041] However, the inventor's research found that the method of manually observing with the naked eye and judging the size of the bow angle of the cutting wire according to experience is too rough to accurately judge the bow angle of the cutting wire. At the same time, when using optical devices such as optical cameras to detect the bow angle of the cutting wire, it will be affected by the water mist sprayed by the spraying mechanism, and the wire diameter of the cutting wire is small (the wire diameter is approximately 0.5 mm), and it is also impossible to accurately detect the size of the bow angle of the cutting wire.

[0042] In order to improve the detection accuracy of the bow angle of the cutting wire 101 and improve the detection efficiency; please refer to Figure 1 and Figure 2 , the stone wire saw cutting device 010 of this embodiment further includes a detection mechanism 200. The detection mechanism 200 is used to detect the height b at which the cutting wire 101 is lifted by the stone, so as to calculate the size of the bow angle of the cutting wire 101 according to the detected height b of the cutting wire 101 being lifted by using the controller 300.

[0043] In this embodiment, the detection mechanism 200 includes a first driving component 210 and a detection member 230. The first driving component 210 is in transmission connection with the detection member 230 and is used to drive the detection member 230 to approach or move away from the cutting line 101 vertically, so that the cutting line 101 enters or exits the detection range of the detection member 230. The controller 300 is used to execute the first height acquisition step and the bow angle acquisition step. Among them, the first height acquisition step includes acquiring the height b at which the cutting line 101 is lifted by the stone according to the situation of the cutting line 101 entering and exiting the detection range. The bow angle acquisition step includes obtaining the bow angle θ of the cutting line 101 according to the height b at which the cutting line 101 is lifted by the stone and the set distance a. The set distance a is: the distance from the position where the cutting line 101 is pulled out from one of the first rollers 110 (that is, the first roller 110 distributed on the same side of the stone as the detection member 230) along the horizontal direction to the intersection point extending vertically with the detection member 230.

[0044] It should be understood that the cutting line 101 can be pulled out from the lowest point of the corresponding first roller 110, and the detection direction of the detection member 230 is configured to be the vertical direction. The set distance a is: the distance from the lowest point of the corresponding first roller 110 along the horizontal direction to the vertical line where the vertical detection direction of the detection member 230 is located.

[0045] The height b at which the cutting line 101 is lifted can refer to: on the vertical detection path of the detection member 230, the height at which the cutting line 101 is lifted, that is, the height at which the intersection point between the cutting line 101 and the vertical line where the vertical detection direction of the detection member 230 is located is lifted.

[0046] The position of the cutting line 101 is detected by the detection member 230 to obtain the height at which the cutting line 101 is lifted by the stone, and the bow angle of the cutting line 101 is obtained according to the height b at which the cutting line 101 is lifted and the set distance a. Since the set distance a is the distance from the position where the cutting line 101 is pulled out from one of the first rollers 110 along the horizontal direction to the intersection point extending vertically with the detection member 230, which is a fixed value, and according to the situation of the cutting line 101 entering and exiting the detection range of the detection member 230, the positions of the cutting line 101 before and after cutting are obtained, so as to accurately obtain the height b at which the cutting line is lifted. Then, the accurate bow angle of the cutting line 101 can be obtained according to the fixed set distance a and the accurate height b at which the cutting line 101 is lifted, that is, the accuracy of the bow angle detection of the cutting line 101 is improved.

[0047] Optionally, when the cutting line 101 is within the detection range of the detector 230, the detector 230 detects the cutting line 101 and can emit a detection signal; when the cutting line 101 moves out of the detection range, the detector 230 does not detect the cutting line 101; the controller 300 is further configured to receive the first signal change of the detector 230 when the cutting line 101 enters the detection range, and receive the second signal change of the detector 230 when the cutting line 101 moves out of the detection range.

[0048] The detector 230 is an inductive proximity switch; one of the cutting lines 101 between the detector 230 and the first roller 110 is aligned, and the first driving assembly 210 is drivingly connected to the detector 230 for driving the detector 230 to approach or move away from the cutting line 101 vertically; when the cutting line 101 enters the detection range and the cutting line 101 is detected, the detector 230 outputs a detection signal so that the controller receives the first signal change; when the cutting line 101 moves out of the detection range and the cutting line 101 is not detected, the detector 230 has no signal output so that the controller receives the second signal change; wherein, the first height obtaining step includes obtaining the height b by which the cutting line 101 is lifted by the stone according to the first signal change and the second signal change.

[0049] When the stone wire saw cutting device 010 is used to perform wire cutting on the stone, by using the first signal change and the second signal change of the detector 230, the position of the cutting line 101 can be detected, and then the controller 300 can obtain the height b by which the cutting line 101 is lifted by the stone according to the obtained first signal change and second signal change, and obtain the bow angle of the cutting line 101 according to the height b by which the cutting line 101 is lifted and the set distance a; since the set distance a is the distance from the position where the cutting line 101 is pulled out from one of the first rollers 110 along the horizontal direction to the intersection point extending vertically with the detector 230, which is a fixed value, and the height b by which the cutting line 101 is lifted can be accurately obtained according to the first signal change and the second signal change, the accurate bow angle of the cutting line 101 can be obtained according to the fixed set distance a and the accurate height b by which the cutting line 101 is lifted, that is, the accuracy of detecting the bow angle of the cutting line 101 is improved.

[0050] It should be noted that the cutting wire 101 is a metal wire with diamond particles electroplated on its surface. The working principle of the inductive proximity switch is based on electromagnetic induction for detection. When the metal cutting wire 101 approaches the inductive proximity switch, eddy currents are induced on the surface of the object by the magnetic field, and then it is determined that a metal object is approaching, and a switching signal is output (that is, changing from no signal to having a signal output; that is, a first signal change is formed). The advantages of the inductive proximity switch include: 1. Non-contact detection, that is, it does not need to contact the object to be detected during detection; 2. Only detects metal objects, that is, it is not affected by other non-metal objects during the detection process; 3. Can adapt to harsh environments, with a waterproof level reaching IP67 or above; 4. Fast response speed, that is, high detection sensitivity.

[0051] It should also be noted that the detection range of the detection member 230 refers to the area range where the detection member 230 can detect the cutting wire 101 and output a detection signal. The above-mentioned cutting wire 101 entering the detection range of the detection member 230 means: the area where the cutting wire 101 is located relative to the detection member 230 when the detection member 230 can detect the cutting wire 101 to output a detection signal; the cutting wire 101 moving out of the detection range of the detection member 230 means: the area where the cutting wire 101 is located relative to the detection member 230 when the detection member 230 cannot detect the cutting wire 101 and no detection signal is output, which can also be understood as other areas outside the detection range.

[0052] Using the inductive proximity switch as the detection member 230 to detect the height position of the cutting wire 101 can be not affected by the water mist sprayed by the spraying mechanism 400, so as to further ensure the accuracy of the height position detection of the cutting wire 101 and improve the accuracy of the final detection of the bow angle size of the cutting wire 101. Moreover, the inductive proximity switch itself has good waterproof performance and is not easily eroded by the water mist sprayed by the spraying mechanism 400, which can ensure good detection results and a long service life.

[0053] It should be noted that the cutting wire 101 wound around the winding mechanism 100 is distributed in multiple segments between the two first rollers 110. The bow angles formed by the multiple segments of the cutting wire 101 when cutting the stone are approximately the same. Therefore, the detection member 230 can be arranged opposite to only one segment of the cutting wire 101. In this way, the number of configurations of the detection member 230 and the first driving assembly 210 can be reduced to lower the cost. Of course, in other embodiments, the detection member 230 can be distributed opposite to two or more segments of the cutting wire 101 at the same time.

[0054] The situations where the detection component 230 forms the first signal change include: 1. When the first driving component 210 drives the inductive proximity switch serving as the detection component 230 to actively move vertically closer to the cutting line 101, so that the cutting line 101 enters the detection range of the detection component 230 and is detected by the detection component 230, the detection component 230 changes from having no signal to outputting a detection signal, thus forming the first signal change that can be received by the controller; 2. When the position of the detection component 230 remains unchanged and the cutting line 101 is lifted by the stone material and approaches the detection component 230, causing the cutting line 101 to enter the detection range of the detection component 230 and be detected by the detection component 230, the detection component 230 changes from having no signal to outputting a detection signal at the moment of detecting the cutting line 101 (the "moment" here means: when the detection component 230 approaches the cutting line 101, within a time less than the preset duration after the cutting line 101 enters the detection range, the detection component 230 detects the cutting line 101 and outputs the detection signal. Among them, the preset duration is determined according to the software and hardware configuration and accuracy of the detection component 230 and / or the controller 300, and can be, for example, 5 ms, 10 ms, 20 ms or 40 ms, etc.), thus forming the first signal change that can be received by the controller.

[0055] The situations where the detection component 230 forms the second signal change include: when the first driving component 210 drives the inductive proximity switch serving as the detection component 230 to actively move vertically away from the cutting line 101, so that the cutting line 101 moves out of the detection range of the detection component 230, at the moment when the signal of the inductive proximity switch disappears, that is, when the detection component 230 switches from outputting a detection signal to having no signal output, the second signal change that can be received by the controller is formed (the "moment" here means: when the detection component 230 moves away from the cutting line 101, within a time less than the preset duration after the cutting line 101 leaves the detection range of the detection component 230, the detection component 230 no longer detects the cutting line 101 and has no signal output. Among them, the preset duration is determined according to the software and hardware configuration and accuracy of the detection component 230 and / or the controller 300, and can be, for example, 5 ms, 10 ms, 20 ms or 40 ms, etc.).

[0056] It should be understood that in other embodiments, the detection component 230 can also be a capacitive proximity switch or a limit switch, etc., which is not specifically limited herein.

[0057] The first driving component 210 can be selected as needed. For example: a lead screw assembly, an electric push rod, etc., as long as it can drive the detection component 230 to move vertically and linearly up and down, which is not specifically limited herein.

[0058] Optionally, please refer to Figure 1 and Figure 3The detection mechanism 200 further includes a second driving assembly 220, which is in transmission connection with the first driving assembly 210 and is used to drive the first driving assembly 210 to drive the detection member 230 to move along the direction in which the multiple cutting lines 101 are arranged at intervals. In this way, the detection member 230 can be driven by the second driving assembly 220 to move to face different cutting lines 101 as needed to detect the height change of the corresponding cutting lines 101.

[0059] Of course, in other embodiments, the first drive component 210 is connected to the detection component 230 through the second drive component 220. The first drive component 210 drives the second drive component 220 and the detection component 230 to approach or move away from the cutting line 101 vertically. The second drive component 220 is used to drive the detection component 230 to move in the direction in which the multiple cutting lines 101 are arranged at intervals.

[0060] The second driving component 220 includes but is not limited to a screw assembly, an electric push rod, a slide rail assembly, etc., and is a component that can achieve lateral horizontal driving.

[0061] It should be understood that the second driving assembly 220 is not a necessary component. In other embodiments, the detection mechanism 200 may only include the first driving assembly 210 .

[0062] Optionally, in the bow angle acquisition step, the bow angle of the cutting line 101 is obtained according to the height b of the cutting line 101 lifted by the stone and the set distance a. Specifically, the bow angle θ of the cutting line 101 can be calculated by an inverse tangent function. The formula of the inverse tangent function is: θ=arctan(b / a), wherein b is the height of the cutting line 101 lifted by the stone, and a is the set distance.

[0063] Optionally, see Figure 2 The stone wire saw cutting device 010 includes two detection mechanisms 200, which are respectively located on both sides of the stone cut by the cutting line 101, that is, the two detection mechanisms 200 are respectively used to detect the height b of the cutting line 101 on both sides of the stone; the controller 300 is also used to perform the first height acquisition step and the bow angle acquisition step according to the two detection mechanisms 200, and compare the bow angles of the cutting line 101 on the corresponding sides of the two detection mechanisms 200, and use the bow angle of the cutting line 101 with a larger angle as the standard for judging whether the bow angle of the cutting line 101 meets the requirements. In this way, it is possible to more effectively prevent the cutting line 101 from being broken due to its large bow angle, or to improve the phenomenon of a bent plate after stone cutting due to the small bow angle of the cutting line 101.

[0064] Of course, in other embodiments, the stone wire saw cutting device 010 may include only one detection mechanism 200. Or, in other embodiments, the number of detection mechanisms 200 of the stone wire saw cutting device 010 may also be three, four, etc., which are not specifically limited herein.

[0065] Optionally, according to the first signal change and the second signal change fed back by the detection piece 230, the height b at which the cutting wire 101 is lifted by the stone is obtained, specifically including: When the first driving component 210 drives the detection piece 230 to approach the cutting wire 101 vertically and detects the cutting wire 101, the controller 300 obtains the first signal change; then the first driving component 210 drives the detection piece 230 to move away from the cutting wire 101 vertically, so that at the moment when the detection piece 230 does not detect the cutting wire 101, the controller 300 obtains the second signal change, and records the position of the detection piece 230 at this time as the first position x; when the cutting wire 101 is lifted by the stone to be detected by the detection piece 230 at the first position, the controller 300 obtains the first signal change again; then the first driving component 210 drives the detection piece 230 to move away from the cutting wire 101 vertically again, so that at the moment when the detection piece 230 does not detect the cutting wire 101, the controller 300 obtains the second signal change again, and records the position of the detection piece 230 at this time as the second position y; the height b at which the cutting wire 101 is lifted by the stone is obtained according to the height difference (y - x) between the second position and the first position.

[0066] It should be understood that the controller 300 is communicatively connected to the detection piece 230 and can obtain the signal change information of the detection piece 230; the controller 300 is also communicatively connected to the first driving component 210 and can obtain the vertical position information corresponding to the detection piece 230 by obtaining the action information of the first driving component 210. When the first driving component 210 drives the detection piece 230 to approach or move away from the cutting wire 101 vertically, or when the cutting wire 101 is lifted by the stone, the vertical distance between the detection piece 230 and the cutting wire 101 changes, so that the relative position between the cutting wire 101 and the detection range of the detection piece 230 changes. Since the distance value of the maximum detection range of the detection piece 230 along the preset vertical line for the cutting wire 101 is fixed, the position of the cutting wire 101 before and after being lifted changes along the preset vertical line. By determining the boundary positions of the detection range of the detection piece 230 relative to the cutting wire 101 before and after the cutting wire 101 is lifted, the corresponding position change value of the detection piece 230 is the height b at which the cutting wire 101 is lifted. Therefore, the controller 300 can obtain the height b at which the cutting wire 101 is lifted by the stone according to the height difference (y - x) between the second position and the first position.

[0067] It should be noted that when the detection member 230 moves to the first position, the cutting line 101 can be regarded as being in the initial position (i.e., the initial height). That is, the first position refers to the position where the detection member 230 is located when it detects the cutting line 101 in the initial position and outputs the first signal transformation. When the cutting line 101 and the detection member 230 move relatively in the vertical direction, the distance range from the moment when the detection member 230 detects the cutting line 101 to the moment when the detection member 230 can no longer detect the cutting line 101 is fixed. Therefore, the height b by which the cutting line 101 is lifted by the stone can be calculated by the height difference between the second position and the first position of the detection member 230. Moreover, by using this method to detect the height b by which the cutting line 101 is lifted by the stone, it is not affected by water mist, and the detection result is accurate and reliable. The above-mentioned second position can refer to the position where the detection member 230 is located when the cutting line 101 moves out of the detection range of the detection member 230 after the detection member 230 moves actively twice in the direction away from the cutting line 101.

[0068] Optionally, the controller 300 is configured to control the speed of the feeding mechanism for delivering the stone according to the value of the bow angle of the cutting line 101 obtained.

[0069] Optionally, the controller 300 is further configured to control the feeding mechanism to reduce the speed of delivering the stone when the obtained bow angle of the cutting line 101 is greater than the first set angle. In this way, the problem that the cutting line 101 is broken can be effectively improved, and the cutting quality of the stone can be improved.

[0070] It should be noted that when controlling the feeding mechanism to reduce the speed of delivering the stone, the height of the cutting line 101 will decrease, that is, the height b by which the cutting line 101 is lifted by the stone will decrease, and the bow angle of the cutting line 101 will also change accordingly (decrease).

[0071] Therefore, after the feeding mechanism delivers the stone at the reduced speed for a set time (for example: about 10 minutes), the bow angle size of the cutting line 101 can be detected again. That is, the controller 300 is further configured to perform the second height acquisition step and the bow angle acquisition step after the speed of the feeding mechanism for delivering the stone is reduced; wherein, the second height acquisition step includes: obtaining the height b by which the cutting line 101 is lifted by the stone again according to the first signal change and the second signal change. The bow angle acquisition step is the same as above, including obtaining the bow angle of the cutting line 101 according to the height b by which the cutting line 101 is lifted by the stone and the set distance a. That is, the bow angle acquisition step is still calculated according to the arctangent function, as well as the height b of the cutting line 101 and the set distance a. In this way, the bow angle of the cutting line 101 can be detected more reliably and accurately during the entire stone cutting process, so as to achieve higher quality stone cutting.

[0072] Of course, in other embodiments, when the feeding mechanism reduces the speed of delivering the stone (i.e., without waiting for the set time), the bow angle size of the cutting wire 101 can be detected again.

[0073] Optionally, according to the first signal change and the second signal change again, the height b at which the cutting wire 101 is lifted by the stone is obtained. Specifically, it includes: driving the detecting member 230 by the first driving assembly 210 to approach the cutting wire 101 vertically again, and when the detecting member 230 detects the cutting wire 101, the detecting member 230 outputs a detection signal, and the controller 300 obtains the first signal change; then the first driving assembly 210 drives the detecting member 230 to move away from the cutting wire 101 vertically again, so that at the moment when the detecting member 230 does not detect the cutting wire 101, the detecting member 230 cannot output a detection signal, and the controller 300 obtains the second signal change, and records the position of the test detecting member 230 as the third position s; according to the height difference (s - x) between the third position and the first position, the height b at which the cutting wire 101 is lifted by the stone is obtained. During the process of stone wire cutting, using the first driving assembly 210 to drive the detecting member 230 to repeatedly approach or move away from the cutting wire 101 actively can accurately detect the bow angle of the cutting wire 101 repeatedly when the feeding speed of the stone changes, and the detection method is simple and easy to operate. That is, during detection, it is not necessary to re-determine the initial position of the cutting wire 101, but the bow angle of the cutting wire 101 after the change of the stone feeding speed can be directly detected according to the initial position of the original cutting wire 101 (i.e., the first position).

[0074] Optionally, the controller 300 is further configured to control the feeding mechanism to increase the speed of delivering the stone when the bow angle of the obtained cutting wire 101 is less than the second set angle; wherein, the first set angle is greater than the second set angle. In this way, the phenomenon of the stone being bent during cutting due to the too small bow angle of the cutting wire 101 can be improved.

[0075] It should be noted that after the feeding mechanism increases the speed of delivering the stone for a period of time (for example: about 10 minutes), the second height obtaining step and the bow angle obtaining step can be performed with reference to after the feeding mechanism reduces the speed of delivering the stone.

[0076] Optionally, the controller 300 is further configured to, when the bow angle of the cutting wire 101 is less than or equal to the first set angle and greater than the second set angle, that is, when the cutting wire 101 with the bow angle meets the high-quality cutting (i.e., making the stone not easy to bend) and has not reached the angle at which the cutting wire 101 breaks, the second height obtaining step and the bow angle obtaining step can be repeatedly executed to timely obtain the bow angle size of the cutting wire 101, and then accurately control the speed of the feeding mechanism to deliver the stone.

[0077] Please refer toFigure 4 , this embodiment also provides a stone wire saw cutting method for a stone wire saw cutting device 010, which includes: S100: Obtain the height b at which the cutting wire 101 is lifted by the stone; S200: Obtain the bow angle of the cutting wire 101 based on the height b at which the cutting wire 101 is lifted by the stone and the set distance a.

[0078] This cutting method can accurately detect the bow angle of the cutting wire 101 to facilitate obtaining better stone cutting quality.

[0079] Optionally, the stone wire cutting method further includes: when the bow angle of the cutting wire 101 is greater than the first set angle, reducing the speed of delivering the stone to improve the problem of the cutting wire 101 being broken.

[0080] Optionally, the stone wire cutting method further includes: when the bow angle of the cutting wire 101 is less than the second set angle, increasing the speed of delivering the stone to improve the phenomenon of the stone cutting being warped.

[0081] In summary, the cutting device and method of the present invention can effectively improve the accuracy of detecting the bow angle of the cutting wire 101.

[0082] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A stone wire saw cutting device, characterized in that: include: A winding mechanism (100), the winding mechanism (100) comprising two rollers, the two rollers being spaced apart and being used together to set a cutting line (101), so that the cutting line (101) between the two rollers can be used to cut stone; A detection mechanism (200), the detection mechanism (200) comprising a first driving assembly (210) and a detection member (230), the first driving assembly (210) being in transmission connection with the detection member (230) and used for driving the detection member (230) to move vertically toward or away from the cutting line (101), so that the cutting line (101) enters or moves out of a detection range of the detection member (230); A controller (300), the controller (300) being used to execute a first height acquisition step and a bow angle acquisition step; wherein the first height acquisition step comprises acquiring a height (b) at which the cutting line (101) is lifted by the stone according to a situation in which the cutting line (101) enters and moves out of the detection range; and the bow angle acquisition step comprises acquiring a bow angle of the cutting line (101) according to a height (b) at which the cutting line (101) is lifted by the stone and a set distance (a); The set distance (a) is: the distance from the position where the cutting line (101) is pulled out from one of the rollers in the horizontal direction to the intersection with the detection member (230) extending in the vertical direction.

2. The stone wire saw cutting device according to claim 1, characterized in that: When the cutting line (101) enters the detection range, the detection element (230) detects the cutting line (101); when the cutting line (101) moves out of the detection range, the detection element (230) does not detect the cutting line (101); The controller (300) is further used to receive a first signal change of the detection element (230) when the cutting line (101) enters the detection range, and to receive a second signal change of the detection element (230) when the cutting line (101) moves out of the detection range; The step of obtaining the height (b) of the cutting line (101) lifted by the stone material according to the situation that the cutting line (101) enters and moves out of the detection range specifically comprises: The height at which the cutting line (101) is lifted by the stone is obtained according to the first signal change and the second signal change.

3. The stone wire saw cutting device according to claim 2, characterized in that: Obtaining the height of the cutting line (101) lifted by the stone according to the first signal change and the second signal change, specifically comprising: When the first driving component (210) drives the detection member (230) to approach the cutting line (101) in a vertical direction and detects the cutting line (101), the controller (300) obtains the first signal change; thereafter, the first driving component (210) drives the detection member (230) to move away from the cutting line (101) in a vertical direction, so that when the detection member (230) fails to detect the cutting line (101), the controller (300) obtains the second signal change and records the position of the detection member (230) at this time as the first position; When the cutting line (101) is lifted by the stone material until it is detected by the detection member (230) located at the first position, the controller (300) obtains the first signal change again; thereafter, the first driving component (210) drives the detection member (230) to move vertically away from the cutting line (101) again, so that when the detection member (230) does not detect the cutting line (101), the controller (300) obtains the second signal change again, and records the position of the detection member (230) at this time as the second position; The height (b) at which the cutting line (101) is lifted by the stone is obtained according to the height difference between the second position and the first position.

4. The stone wire saw cutting device according to claim 3, characterized in that: The stone wire saw cutting device also includes a feeding mechanism for delivering the stone; the controller (300) is also used to control the feeding mechanism to reduce the speed of delivering the stone when the acquired bow angle of the cutting line (101) is greater than a first set angle.

5. The stone wire saw cutting device according to claim 4, characterized in that: The controller (300) is further used to execute the second height acquisition step and the bow angle acquisition step after a preset time at which the speed at which the feeding mechanism delivers the stone material decreases; wherein, The second height acquisition step comprises: acquiring the height (b) of the cutting line (101) lifted by the stone again according to the first signal change and the second signal change.

6. The stone wire saw cutting device according to claim 5, characterized in that: The step of obtaining the height (b) of the cutting line (101) lifted by the stone again according to the change of the first signal and the change of the second signal specifically comprises: When the first driving component (210) drives the detection member (230) again to approach the cutting line (101) in the vertical direction and detects the cutting line (101), the controller (300) obtains the first signal change; thereafter, the first driving component (210) drives the detection member (230) again to move away from the cutting line (101) in the vertical direction, so that when the detection member (230) fails to detect the cutting line (101), the controller (300) obtains the second signal change and records the position of the detection member (230) tested as a third position; According to the height difference between the third position and the first position, the height (b) at which the cutting line (101) is lifted by the stone is obtained.

7. The stone wire saw cutting device according to claim 5, characterized in that: The controller (300) is also used to control the feeding mechanism to increase the speed of delivering the stone when the acquired bow angle of the cutting line (101) is smaller than a second set angle; wherein the first set angle is larger than the second set angle.

8. The stone wire saw cutting device according to any one of claims 1 to 7, characterized in that: The stone wire saw cutting device comprises two detection mechanisms (200), the two detection mechanisms (200) being respectively located on two sides of the stone cut by the cutting line (101); the controller (300) is further used to respectively perform the first height acquisition step and the bow angle acquisition step according to the two detection mechanisms (200), and compare the bow angles of the cutting line (101) on the corresponding sides of the two detection mechanisms (200), and compare the bow angle of the cutting line (101) with the larger angle with the first set angle; and / or, The detection element (230) is a proximity switch or a limit switch.

9. The stone wire saw cutting device according to any one of claims 1 to 7, characterized in that: A plurality of sections of the cutting line (101) are sequentially spaced apart along the axial direction of the roller; The detection mechanism (200) further comprises a second driving assembly (220), the second driving assembly (220) being in transmission connection with the first driving assembly (210) and being used to drive the first driving assembly (210) to drive the detection member (230) to move along a direction in which the plurality of sections of the cutting line (101) are arranged at intervals; or, the first driving assembly (210) is in transmission connection with the detection member (230) via the second driving assembly (220), the first driving assembly (210) drives the second driving assembly (220) and the detection member (230) to move vertically toward or away from the cutting line (101), and the second driving assembly (220) is used to drive the detection member (230) to move along a direction in which the plurality of sections of the cutting line (101) are arranged at intervals.

10. A stone wire cutting method, characterized in that: The stone wire saw cutting device according to any one of claims 1 to 9, wherein the stone wire cutting method comprises: Obtaining the height (b) at which the cutting line (101) is lifted by the stone; The bow angle of the cutting line (101) is obtained according to the height (b) at which the cutting line (101) is lifted by the stone and the set distance (a).

11. The stone wire cutting method according to claim 10, characterized in that: Also includes: When the bow angle of the cutting line (101) is greater than a first set angle, reducing the speed of delivering the stone; and / or, It also includes: when the bow angle of the cutting line (101) is less than a second set angle, increasing the speed of delivering the stone.

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