Adaptive pressure bar multi-segment synchronous wire cutting device

Abstract

This invention discloses an adaptive pressure bar stock multi-segment synchronous wire cutting device, comprising a frame, a feeding mechanism, multiple wire cutting mechanisms, multiple arc-shaped pressure plates, and an adaptive pressure mechanism. The feeding mechanism includes a feeding roller and a feeding drive device. The outer circumferential surface of the feeding roller is provided with multiple material grooves. The feeding drive device is used to drive the feeding roller to rotate and transfer the bar stock to the cutting station. The multiple wire cutting mechanisms are used to synchronously cut the bar stock into several bar stock segments. The multiple arc-shaped pressure plates are rotatably mounted on the frame and arranged axially above the feeding roller. The adaptive pressure mechanism includes a pressure sensor and a downward pressure drive device. The downward pressure drive device is used to drive the corresponding wire cutting mechanism to apply pressure to the arc-shaped pressure plates, and can dynamically adjust the output pressure according to the real-time pressure detection signal fed back by the corresponding pressure sensor, so that each arc-shaped pressure plate uniformly presses the bar stock in the material groove. This invention can realize multi-segment synchronous cutting of bar stock and significantly improve production efficiency and cutting accuracy.

Description

Technical Field

[0001] This invention relates to the field of bar cutting technology, and in particular to an adaptive pressure bar multi-segment synchronous wire cutting device. Background Technology

[0002] With the rapid development of industries such as precision machining, cutting tool manufacturing, and aerospace, increasingly higher demands are being placed on the cutting quality and production efficiency of ultra-hard and ultra-brittle round bars such as cemented carbide and high-speed steel. As the first key process in bar processing, bar cutting directly affects the quality and production cost of subsequent processing due to the flatness of the cut end face, dimensional accuracy, and cutting efficiency.

[0003] Currently, the industry widely uses traditional abrasive wheel cutting for bar stock processing, but this method has several insurmountable technical drawbacks. First, traditional abrasive wheel cutting is a single-segment cutting mode, capable of cutting only one segment of a single bar stock at a time, making multi-segment simultaneous cutting impossible. This results in low production efficiency and difficulty matching the cycle time requirements of high-speed automated production lines. Second, traditional abrasive wheel cutting generally uses a single-sided clamping and fixing method, clamping only one end of the bar stock for cutting. During the cutting process, the free end of the bar stock is suspended, leading to an extremely uneven distribution of cutting force, which easily causes vibration and deviation. This results in tilted and uneven cut surfaces, and in severe cases, chipping and cracking defects. This not only significantly reduces the product yield but also requires additional end-face grinding processes, further increasing production costs and time. Furthermore, traditional abrasive wheel cutting also suffers from large kerf widths and significant material waste, resulting in substantial material loss.

[0004] Therefore, there is an urgent need to develop a bar cutting device that can achieve multi-segment synchronous cutting, uniform pressure, smooth cutting end face without chipping, and high production efficiency, in order to meet the industry's urgent need for high-precision and high-efficiency bar processing. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems existing in the prior art and to provide an adaptive pressure bar multi-segment synchronous wire cutting device to overcome the defects of low cutting efficiency and cutting quality of existing bar cutting devices.

[0006] The technical solution adopted by this invention to solve its technical problem is: an adaptive pressure bar stock multi-segment synchronous wire cutting device, comprising: frame; The feeding mechanism includes a feeding roller rotatably mounted on the frame and a feeding drive device connected to the feeding roller. The outer circumferential surface of the feeding roller is uniformly provided with a plurality of axially distributed protrusions, and a trough is formed between two adjacent protrusions to accommodate only one bar. The feeding drive device is used to drive the feeding roller to rotate so as to transfer the bars one by one to the cutting station. Multiple wire cutting mechanisms are arranged axially at the cutting station to simultaneously cut the bar stock into several bar segments. Multiple arc-shaped pressure plates are rotatably mounted on the frame and arranged axially above the feeding roller; The adaptive pressure mechanism includes multiple pressure sensors mounted one-to-one on the wire cutting mechanism and multiple pressing drive devices connected one-to-one to the wire cutting mechanism. Each pressing drive device is used to independently drive the corresponding wire cutting mechanism to apply pressure to the arc-shaped pressure plate at the corresponding position, and can dynamically adjust the output pressure according to the real-time pressure detection signal fed back by the corresponding pressure sensor, so that each arc-shaped pressure plate uniformly presses the bar stock in the trough.

[0007] As a further improvement of the present invention, a pressure plate mounting shaft is installed axially on the frame, and the middle part of each of the plurality of arc-shaped pressure plates is rotatably mounted on the pressure plate mounting shaft; the arc-shaped pressure plates are divided into a front pressure plate part and a rear pressure plate part by the pressure plate mounting shaft as the boundary, the front pressure plate part is flexibly pressed by an elastic pressing mechanism installed on the frame, and the rear pressure plate part is adaptively pressed by the downward pressing drive device through the wire cutting mechanism.

[0008] As a further improvement of the present invention, the elastic pressing mechanism includes a pressing block, a limiting screw and a spring. The pressing block is mounted on the frame by means of the limiting screw, and the spring is fitted onto the limiting screw and applies an elastic force to the pressing block so that the pressing block is always pressed against the front pressing plate portion of the arc-shaped pressing plate.

[0009] As a further improvement of the present invention, along the rotation direction of the feeding roller, the distance between each of the arc-shaped pressure plates and the outer peripheral surface of the feeding roller gradually decreases, thereby forming a progressive pressing channel that is loose at the front and tight at the back, and the cutting station is set at the outlet end of the pressing channel.

[0010] As a further improvement of the present invention, each of the feeding rollers is provided with an axial positioning reference surface at one axial end of each of the material troughs; multiple arc-shaped pressure plates are spliced ​​together to form a whole bar pressure plate, and the inner surface of the whole bar pressure plate is provided with multiple axial guide ribs at intervals. Along the rotation direction of the feeding rollers, the axial guide ribs gradually tilt toward the axial positioning reference surface to drive the bar to move axially and abut against the axial positioning reference surface.

[0011] As a further improvement of the present invention, multiple wire cutting mechanisms are synchronously driven by the same drive motor through a rotating shaft; each wire cutting mechanism includes a wire cutting fixing frame, two wire wheels, and diamond wire wound on the two wire wheels, wherein one wire wheel is fixed to the rotating shaft, one end of the wire cutting fixing frame is rotatably connected to the rotating shaft, and the other wire wheel is rotatably mounted on the other end of the wire cutting fixing frame; a protrusion is provided in the middle of the wire cutting fixing frame, and the protrusion abuts against the outer surface of the arc-shaped pressure plate.

[0012] As a further improvement of the present invention, the downward driving device is an electric cylinder, the output end of which is hinged to the wire cutting fixing frame.

[0013] As a further improvement of the present invention, the frame is provided with a feed inlet that is connected to the feeding roller, and a bar material sorting mechanism is installed on one side of the feed inlet. The bar material sorting mechanism includes a push plate and a cylinder connected to the push plate. The cylinder is used to drive the push plate to reciprocate axially within the feed inlet.

[0014] As a further improvement of the present invention, the adaptive pressure bar multi-segment synchronous wire cutting device further includes an arc-shaped baffle and a conveyor line. The arc-shaped baffle is disposed downstream of the cutting station along the feeding direction of the feeding roller and forms a bar segment guiding channel with the outer circumferential surface of the feeding roller. The conveyor line is disposed below the arc-shaped baffle and includes a conveyor belt. The outer surface of the conveyor belt is uniformly provided with multiple receiving grooves. The extending direction of the receiving grooves is consistent with the extending direction of the trough and is used to receive the bar segments that slide down guided by the bar segment guiding channel.

[0015] As a further improvement of the present invention, the feeding roller is provided with a plurality of first wire cutting clearance grooves spaced apart along the axial direction. Each first wire cutting clearance groove extends circumferentially along the feeding roller and radially penetrates each of the material grooves, and corresponds one-to-one with the cutting position of each of the wire cutting mechanisms. Each of the arc-shaped pressure plates is provided with a plurality of second wire cutting clearance grooves. The second wire cutting clearance grooves are provided through the arc-shaped pressure plate along the thickness direction, and correspond one-to-one with the position of each of the first wire cutting clearance grooves.

[0016] The beneficial effects of this invention are: 1. This invention provides an adaptive pressure bar stock multi-segment synchronous wire cutting device. By setting a feeding roller with an axial distribution groove on the frame, the bar stock can be transferred to the cutting station one by one in an orderly manner, ensuring the continuity and stability of feeding. Multiple wire cutting mechanisms are arranged along the axial direction, which can simultaneously cut a single bar stock into multiple segments, completely changing the inefficient mode of traditional abrasive wheel cutting that can only cut one segment at a time, and greatly improving production efficiency.

[0017] 2. This invention employs a structure that combines multiple independently arranged arc-shaped pressure plates along the axial direction with an adaptive pressure mechanism. Pressure sensors installed on each wire cutting mechanism collect pressure signals in real time during the cutting process, and the corresponding independently controlled pressing drive dynamically adjusts the output pressure based on the pressure feedback. This allows for adaptive adjustment of the clamping force to accommodate dimensional deviations in different sections of the bar stock, ensuring uniform and stable clamping force across the entire length of the bar stock. This fundamentally guarantees the stability of each cutting process and effectively avoids defects commonly found in traditional cutting methods, such as end face tilting, unevenness, chipping, and micro-cracks. It significantly improves the end face flatness, perpendicularity, and length dimensional accuracy of all cut bar stock sections.

[0018] 3. This invention provides multiple axially guiding ribs spaced apart on the inner surfaces of several arc-shaped pressure plates. Along the rotation direction of the feeding roller, the axially guiding ribs gradually tilt towards the axial positioning reference surface. During the feeding process, the axially guiding ribs apply a continuous axial thrust to the bar, driving it to move axially and eventually press tightly against the axial positioning reference surface. This achieves precise axial positioning of all bars, ensuring consistent length accuracy for each cut bar segment, avoiding the problem of large dimensional deviations in traditional cutting methods, and reducing the workload of subsequent manual inspection and trimming. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the adaptive pressure bar stock multi-segment synchronous wire cutting device of the present invention; Figure 2 This is a top view of the adaptive pressure bar multi-segment synchronous wire cutting device of the present invention; Figure 3 For the present invention along Figure 2 Cross-sectional view along the AA direction; Figure 4 This is a perspective view of the adaptive pressure bar multi-segment synchronous wire cutting device of the present invention after removing the support. Figure 5 This is a rear view of the feeding roller and the arc-shaped pressure plate in this invention; Figure 6 This is a perspective view of the feeding roller in this invention; Figure 7 This is a perspective view of the arc-shaped pressure plate in this invention; Figure 8This is a perspective view of the arc-shaped pressure plate in this invention from another angle.

[0021] Referring to the accompanying drawings, the following explanations are provided: 1. Frame; 101. Feed inlet; 2. Feed roller; 201. Raised tooth; 202. Feed trough; 203. Axial positioning reference surface; 204. First wire cutting clearance groove; 3. Feeding drive device; 4. Wire cutting mechanism; 401. Wire cutting fixing frame; 4011. Protrusion; 402. Steel wire wheel; 403. Diamond wire; 5. Arc-shaped pressure plate; 501. Axial guide rib; 502. Second wire cutting clearance groove; 6. Pressure sensor; 7. Downward pressure drive device; 8. Pressure plate mounting shaft; 9. Pressure block; 10. Limit screw; 11. Spring; 12. Push plate; 13. Cylinder; 14. Arc-shaped baffle; 15. Conveyor line; 1501. Conveyor belt; 16. Drive motor; 17. Rotary shaft; 100. Bar stock. Detailed Implementation

[0022] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0024] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0026] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0027] See Figures 1 to 8 The present invention provides an adaptive pressure bar multi-segment synchronous wire cutting device, comprising: a frame 1, a feeding mechanism, multiple wire cutting mechanisms 4, multiple arc-shaped pressure plates 5, and an adaptive pressure mechanism.

[0028] The feeding mechanism includes a feeding roller 2 and a feeding drive device 3. The feeding roller is mounted on the frame 1 and rotates horizontally, with one end connected to the feeding drive device 3. The outer circumferential surface of the feeding roller 2 is uniformly provided with multiple axially distributed protrusions 201. A groove 202 is formed between two adjacent protrusions 201. The length and width of the groove 202 are slightly larger than the length and diameter of the bar stock 100, and each groove 202 can only accommodate one bar stock 100. During the rotation of the feeding roller 2 driven by the feeding drive device 3, each groove 202 can receive one bar stock 100.

[0029] by Figure 3 The orientation shown is for reference. The right side of the feeding roller 2 is the feeding side, and its feeding direction (or rotation direction) is counterclockwise. It is tilted at about 45° to the upper left. A cutting station is set on the outer circumference of the feeding roller 2. The feeding drive device 3 drives the feeding roller 2 to carry the bar stock 100 to the cutting station one by one.

[0030] It should be noted that the term "axial" as used below refers to the axial direction of the feed roller 2.

[0031] Furthermore, multiple wire cutting mechanisms 4 are arranged on the upper left of the feeding roller 2 and distributed along the axial direction to simultaneously cut the bar stock 100 at the cutting station into several bar stock segments.

[0032] In this embodiment, the wire cutting mechanism 4 is specifically configured as, but not limited to, five, which can simultaneously cut the bar stock 100 at the cutting station into four bar stock segments of the target length.

[0033] Furthermore, multiple arc-shaped pressure plates 5 are rotatably mounted on the frame 1 and arranged axially above the feeding roller 2. In this invention, the number of arc-shaped pressure plates 5 is the same as the number of wire cutting mechanisms 4 and corresponds one-to-one.

[0034] Furthermore, the adaptive pressure mechanism includes multiple pressure sensors 6 mounted one-to-one on the wire cutting mechanism 4 and multiple pressing drive devices 7 connected one-to-one to the wire cutting mechanism 4. Each pressing drive device 7 is used to independently drive the corresponding wire cutting mechanism 4 to apply pressure to the arc-shaped pressure plate 5 at the corresponding position, and can dynamically adjust the output pressure according to the real-time pressure detection signal fed back by the corresponding pressure sensor 6, so that each arc-shaped pressure plate 5 uniformly presses the bar stock 100 in the material groove 202.

[0035] This invention, by setting a feeding roller 2 with an axially distributed material groove 202 on the frame 1, can transfer the bar stock 100 one by one to the cutting station in an orderly manner, ensuring the continuity and stability of feeding; and by arranging multiple wire cutting mechanisms 4 along the axial direction, it can simultaneously cut a single bar stock 100 into multiple segments, completely changing the inefficient mode of traditional abrasive wheel cutting that can only cut one segment at a time, and greatly improving production efficiency.

[0036] Because the bar stock 100 inevitably has dimensional defects such as roundness deviation and local bending left over from the raw materials or previous processes, it is very easy to cause uneven pressure distribution, bar vibration or axial displacement during the cutting process. To this end, the present invention adopts a structure in which multiple arc-shaped pressure plates 5 independently set along the axial direction cooperate with an adaptive pressure mechanism. Pressure sensors 6 installed on each wire cutting mechanism collect pressure signals in real time during the cutting process, and the corresponding independently controlled pressing drive device 7 dynamically adjusts the output pressure according to the pressure feedback. The clamping force can be adaptively adjusted according to the dimensional deviation of different axial sections of the bar stock, ensuring that each section of the bar stock obtains a uniform and stable clamping force, fundamentally guaranteeing the stability of each cutting process, effectively avoiding defects such as end face tilting, unevenness, chipping and micro-cracks common in traditional cutting methods, and significantly improving the end face flatness, perpendicularity and length dimensional accuracy of all cut bar stock sections.

[0037] In addition, the wire EDM mechanism has a smaller kerf width, which greatly reduces material waste and lowers production costs.

[0038] Preferably, the feeding drive device 3 is a geared motor, which is fixed on the outside of the frame 1.

[0039] It should be noted that the pressure sensor 6, the downward pressure drive device 7, and the control system for achieving closed-loop pressure control involved in this invention are all conventional technologies in the field. Their specific structures, working principles, and electrical connections are well known to those skilled in the art. Those skilled in the art can select appropriate models and specifications of the above-mentioned components and perform conventional circuit connections and programming based on actual pressure detection accuracy, output force requirements, and control needs. The improvement of this invention lies not in the specific structure of the individual components themselves, but in the organic integration of these conventional components with the unique mechanical structure of this invention, achieving adaptive pressure adjustment during the bar cutting process through the overall layout and coordination.

[0040] See Figure 3 and Figure 4 A pressure plate mounting shaft 8 is axially mounted on the frame 1, and the center of each of the multiple arc-shaped pressure plates 5 is rotatably mounted on the pressure plate mounting shaft 8. The arc-shaped pressure plates 5 are divided into a front pressure plate section and a rear pressure plate section by the pressure plate mounting shaft 8. It can be understood that, along the feeding direction of the feeding roller 2, the front pressure plate section is located upstream, and the rear pressure plate section is located downstream. The front pressure plate section is flexibly pressed by an elastic pressing mechanism mounted on the frame 1, while the rear pressure plate section is adaptively pressed by a downward pressing drive device 7 through a wire cutting mechanism 4. This forms a segmented pressing mode of front elastic pre-pressing and rear adaptive pressing, ensuring that the bar stock 100 at the feeding end can smoothly enter the pressing channel and that the bar stock 100 at the cutting station receives sufficient and stable pressing force. Simultaneously, the lever-type pressure plate structure allows the force of the downward pressing drive device 7 to be evenly transmitted to the surface of the bar stock 100, further improving the stability and uniformity of the pressing and reducing vibration during the cutting process.

[0041] Specifically, the number of elastic pressing mechanisms is the same as the number of arc-shaped pressure plates 5. Each elastic pressing mechanism includes a pressure block 9, a limiting screw 10, and a spring 11. A horizontal mounting plate is provided above the arc-shaped pressure plate 5 on the frame 1. The pressure block 9 can be mounted on the mounting plate of the frame 1 by means of the limiting screw 10. The spring 11 is fitted onto the limiting screw 10, and the two ends of the spring 11 elastically abut against the mounting plate of the frame 1 and the pressure block 9, respectively, thereby applying a downward elastic force to the pressure block 9 so that the pressure block 9 always remains pressed against the front pressure plate of the arc-shaped pressure plate 5.

[0042] It is worth mentioning that, such as Figure 5 As shown, along the rotation direction of the feed roller 2 (i.e. Figure 5(As indicated by the arrows) The distance between each arc-shaped pressure plate 5 and the outer circumference of the feeding roller 2 gradually decreases, thus forming a progressively tighter clamping channel with a looser front and a tighter rear. The cutting station is located at the exit end of the clamping channel. By adopting this looser-then-tighter mode, on the one hand, the bar stock 100 can more easily adapt to the conveying of the feeding roller 2; on the other hand, the bar stock 100 is gradually clamped during the conveying process, ensuring that the bar stock 100 is in a stable clamping state before entering the cutting station. Furthermore, by setting the cutting station at the exit end of the clamping channel, the clamping force on the bar stock 100 reaches its maximum value, which can suppress vibration and deviation during the cutting process to the greatest extent, further improving the flatness and dimensional consistency of the cut end face.

[0043] In this invention, multiple wire cutting mechanisms 4 are synchronously driven by the same drive motor 16 through a rotating shaft 17. The drive motor 16 is fixedly installed on the outside of the frame 1, and the rotating shaft 17 is rotatably installed inside the frame 1 along the axial direction.

[0044] Continue reading Figure 3 and Figure 4 Each wire cutting mechanism 4 includes a wire cutting fixture 401, two wire wheels 402, and diamond wire 403 wound around the two wire wheels 402. Along the feeding direction of the feed roller 2, the downstream wire wheel 402 is fixed to the rotating shaft 17; while the wire cutting fixture 401 is rotatably connected to the rotating shaft 17. Specifically, the downstream end of the wire cutting fixture 401 can be rotatably mounted on the rotating shaft 17 through a bearing; the upstream wire wheel 402 is rotatably mounted on the other end of the wire cutting fixture 401, and the pressure sensor 6 is installed between the two.

[0045] Preferably, the pressure sensor 6 is a six-dimensional force sensor.

[0046] In addition, the middle part of the wire cutting fixture 401 extends downward to form a protrusion 4011. The protrusion 4011 presses against the outer surface of the rear pressure plate of the arc-shaped pressure plate 5, so that the force of the downward pressure drive device 7 can be transmitted to the bar stock 100 through the arc-shaped pressure plate 5, and pressure detection is achieved through the pressure sensor 6.

[0047] Preferably, the pressing drive device 7 is an electric cylinder, fixedly installed on the top of the frame 1, with its output end hinged to the wire cutting fixture 401. The electric cylinder in the pressing drive device 7 offers advantages such as fast response, high control precision, and linearly adjustable output force. It can quickly and accurately adjust the output pressure based on the real-time signal fed back by the pressure sensor 6, achieving closed-loop control of the clamping force. Compared to pneumatic and hydraulic cylinders, electric cylinders offer higher control precision and smoother operation, better meeting the pressure control requirements of precision bar cutting. Furthermore, it eliminates the need for complex pneumatic or hydraulic systems, making maintenance more convenient.

[0048] See Figure 1 and Figure 2 The frame 1 is also provided with a feed inlet 101, which is inclined downward and connected to the feeding roller 2. The bar stock 100 to be cut can be arranged and placed into the feed inlet 101 by manual or automated feeding equipment. The bar stock 100 rolls towards the feeding roller 2 under its own gravity and can fall into the feed trough 202 of the feeding roller 2.

[0049] In addition, a bar stock sorting mechanism is installed on one side of the feed inlet 101. The bar stock sorting mechanism includes a push plate 12 and a cylinder 13. The push plate 12 is slidably mounted on the side wall of the feed inlet 101 via a guide shaft. The cylinder 13 is fixedly mounted on the side wall of the feed inlet 101 and is driven by the push plate 12. The cylinder 13 is used to drive the push plate 12 to reciprocate axially within the feed inlet 101, which can push the bar stock 100 to perform axial alignment during the feeding stage, so that the ends of all the bar stock 100 entering the feed roller 2 trough 202 are basically kept flush.

[0050] However, relying solely on the bar stock sorting mechanism at the feed inlet 101 for pre-alignment cannot guarantee that all bars 100 falling into the feed roller 2 trough 202 will be perfectly aligned; a certain axial positional deviation will still exist. Therefore, as... Figure 6 As shown, in this invention, each feed trough 202 of the feeding roller 2 is provided with an axial positioning reference surface 203 at one axial end; as Figure 8 As shown, multiple arc-shaped pressure plates 5 are spliced ​​together axially to form a whole bar pressure plate. The inner surface of the whole bar pressure plate is provided with multiple axial guide ribs 501 at intervals. Along the rotation direction of the feeding roller 2, the axial guide ribs 501 gradually tilt towards the axial positioning reference surface 203. During the process of the bar 100 rotating and being conveyed with the feeding roller 2, the axial guide ribs 501 can apply a continuous axial thrust to the bar 100, driving the bar 100 to move axially and finally closely abut against the axial positioning reference surface 203, thereby achieving precise axial positioning of all bars, completely eliminating the axial position error remaining in the pre-alignment stage, ensuring the consistent length accuracy of each cut bar, avoiding the problem of large dimensional deviations in traditional cutting methods, and reducing the workload of subsequent manual inspection and trimming.

[0051] In addition, the adaptive pressure bar multi-segment synchronous wire cutting device of the present invention also includes an arc-shaped baffle 14 and a conveyor line 15.

[0052] Please refer to it again. Figure 3 and Figure 4An arc-shaped baffle 14 is positioned downstream of the cutting station along the feeding direction of the feeding roller 2, forming a bar segment guide channel with the outer circumference of the feeding roller 2. The arc-shaped baffle 14 prevents the bar segments from falling out of the guide channel. A conveyor line 15 is horizontally positioned below the arc-shaped baffle 14 and includes a conveyor belt 1501. Multiple receiving grooves are evenly distributed on the outer surface of the conveyor belt 1501, extending in the same direction as the material trough 202. These grooves are used to receive the bar segments guided down by the bar segment guide channel. The conveyor belt 1501 is driven by a motor to transport the bar segments in a preset direction, facilitating subsequent automated collection, transfer, and packaging, thus achieving fully automated continuous production of the cutting process.

[0053] Preferably, the width of the receiving groove is the same as that of the material trough 202, and the interval between two adjacent receiving grooves is the same as the interval between two adjacent material troughs 202, so as to ensure that the bar segments falling in each material trough 202 can be received by the receiving groove one by one.

[0054] See Figure 4 , Figure 6 and Figure 7 The feeding roller 2 has multiple first wire cutting clearance grooves 204 spaced apart along its axial direction. Each first wire cutting clearance groove 204 extends circumferentially along the feeding roller 2 and radially penetrates each feed trough 202, corresponding one-to-one with the cutting position of each wire cutting mechanism 4. Each arc-shaped pressure plate 5 has multiple second wire cutting clearance grooves 502 correspondingly. The second wire cutting clearance grooves 502 are arranged through the thickness direction of the arc-shaped pressure plate 5 and correspond one-to-one with the position of each first wire cutting clearance groove 204. The first wire cutting clearance grooves 204 and the second wire cutting clearance grooves 502 together provide cutting clearance space for the wire cutting mechanism 4, avoiding interference between the diamond wire 403 and the feeding roller 2 and the arc-shaped pressure plate 5 during the cutting process.

[0055] The working principle of the adaptive pressure bar stock multi-segment synchronous wire cutting device of the present invention is as follows: The bar stock 100 to be cut is arranged and placed into the feed inlet 101 of the frame 1 by manual or automated feeding equipment. Under the action of its own gravity, the bar stock 100 rolls along the inclined feed inlet 101 toward the feeding roller 2. During this process, the cylinder 13 drives the push plate 12 to move axially back and forth along the guide shaft in the feed inlet 101, pushing all the bar stock 100 to perform axial pre-alignment, so that the ends of the bar stock 100 are basically flat, which facilitates subsequent falling into the feed trough 202 of the feeding roller 2.

[0056] The feeding drive device 3 drives the feeding roller 2 to rotate counterclockwise at a preset speed. When the empty trough 202 rotates to the discharge end of the feed inlet 101, a bar stock 100 falls into the trough 202 under gravity, while the remaining bars stock 100 wait for the next trough 202 to rotate into position. The feeding roller 2 continues to rotate, carrying the bars stock 100 towards the cutting station. The bars stock 100 first enter the progressive pressing channel formed by the arc-shaped pressure plate 5 and the feeding roller 2, which is loose at the front and tight at the back. As the feeding roller 2 continues to rotate, the bars stock 100 are gradually pressed in the progressive pressing channel. At the same time, the axial guide ribs 501 on the inner surface of the arc-shaped pressure plate 5 contact the surface of the bars stock 100. As the bar stock 100 rotates with the feeding roller 2, the axial guide rib 501 applies a continuous axial thrust to the bar stock 100, driving the bar stock 100 to move axially toward the axial positioning reference surface 203 until the end of the bar stock 100 is tightly pressed against the axial positioning reference surface 203 of the feeding roller 2, thus completing the precise axial positioning of the bar stock 100.

[0057] When the axially positioned bar stock 100 is transferred to the cutting station at the outlet of the clamping channel, the drive motor 16 synchronously drives the wire wheels 402 of all wire cutting mechanisms 4 to rotate at high speed via the rotating shaft 17, causing the diamond wire 403 to circulate. At this time, each downward pressure drive device 7 drives the corresponding wire cutting fixture 401 to rotate downward around the rotating shaft 17, so that the protrusion 4011 in the middle of the wire cutting fixture 401 presses against the outer surface of the rear pressure plate of the arc-shaped pressure plate 5, thereby pressing the bar stock 100 into the material groove 202 through the arc-shaped pressure plate 5. The pressure sensor 6 collects the pressure signal during the cutting process in real time and feeds it back to the control system. The control system dynamically adjusts the output pressure of each downward pressure drive device 7 according to the difference between the preset pressure value and the real-time detection value, and adaptively adjusts the clamping force for dimensional defects such as roundness deviation and local bending of different shaft sections of the bar stock 100, ensuring that all sections of the bar stock 100 receive uniform and stable clamping force. At the same time, the high-speed rotating diamond wire 403 passes through the corresponding second wire cutting clearance groove 502 and the first wire cutting clearance groove 204, and simultaneously cuts the bar stock 100 into multiple segments, cutting the single bar stock 100 into multiple segments of the same length in one go.

[0058] After cutting, the feeding roller 2 continues to rotate, carrying the cut bar segments downstream of the cutting station. The segments enter the bar segment guide channel formed by the arc-shaped baffle 14 and the outer circumference of the feeding roller 2, and finally fall precisely into the receiving slots on the lower conveyor belt 1501 that correspond one-to-one with the positions of the trough 202. The material is then transported by the conveyor belt 1501 to the next process for collection and boxing, completing the entire bar cutting process.

[0059] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An adaptive pressure bar multi-segment synchronous wire cutting device, characterized in that, include: Rack (1); The feeding mechanism includes a feeding roller (2) rotatably mounted on the frame (1) and a feeding drive device (3) connected to the feeding roller (2). The outer circumferential surface of the feeding roller (2) is uniformly provided with a plurality of axially distributed protrusions (201), and a trough (202) is formed between two adjacent protrusions (201) that can only accommodate one bar (100). The feeding drive device (3) is used to drive the feeding roller (2) to rotate so as to transfer the bar (100) one by one to the cutting station. Multiple wire cutting mechanisms (4) are arranged axially at the cutting station to simultaneously cut the bar stock (100) into several bar stock segments; Multiple arc-shaped pressure plates (5) are rotatably mounted on the frame (1) and arranged axially above the feeding roller (2); The adaptive pressure mechanism includes multiple pressure sensors (6) installed one-to-one on the wire cutting mechanism (4) and multiple pressure driving devices (7) connected to the wire cutting mechanism (4) one-to-one. Each pressure driving device (7) is used to independently drive the corresponding wire cutting mechanism (4) to apply pressure to the arc-shaped pressure plate (5) at the corresponding position, and can dynamically adjust the output pressure according to the real-time pressure detection signal fed back by the corresponding pressure sensor (6) so that each arc-shaped pressure plate (5) uniformly presses the bar stock (100) in the material groove (202).

2. The adaptive pressure bar multi-segment synchronous wire cutting device according to claim 1, characterized in that, A pressure plate mounting shaft (8) is mounted axially on the frame (1), and the middle of each of the multiple arc-shaped pressure plates (5) is rotatably mounted on the pressure plate mounting shaft (8). The arc-shaped pressure plates (5) are divided into a front pressure plate part and a rear pressure plate part by the pressure plate mounting shaft (8). The front pressure plate part is flexibly pressed by an elastic pressing mechanism mounted on the frame (1), and the rear pressure plate part is adaptively pressed by the downward pressing drive device (7) through the wire cutting mechanism (4).

3. The adaptive pressure bar multi-segment synchronous wire cutting device according to claim 2, characterized in that, The elastic pressing mechanism includes a pressing block (9), a limiting screw (10), and a spring (11). The pressing block (9) is mounted on the frame (1) by means of the limiting screw (10). The spring (11) is fitted onto the limiting screw (10) and applies an elastic force to the pressing block (9) so that the pressing block (9) is always pressed against the front pressing plate of the arc-shaped pressing plate (5).

4. The adaptive pressure bar multi-segment synchronous wire cutting device according to claim 1, characterized in that, Along the rotation direction of the feeding roller (2), the distance between each arc-shaped pressure plate (5) and the outer peripheral surface of the feeding roller (2) gradually decreases, thereby forming a progressive pressing channel that is loose at the front and tight at the back. The cutting station is located at the outlet end of the pressing channel.

5. The adaptive pressure bar multi-segment synchronous wire cutting device according to claim 1, characterized in that, The feeding roller (2) is provided with an axial positioning reference surface (203) at one axial end of each of the material troughs (202); multiple arc-shaped pressure plates (5) are spliced ​​together to form a whole bar pressure plate. The inner surface of the whole bar pressure plate is provided with multiple axial guide ribs (501) at intervals. Along the rotation direction of the feeding roller (2), the axial guide ribs (501) gradually tilt towards the axial positioning reference surface (203) to drive the bar (100) to move axially and abut against the axial positioning reference surface (203).

6. The adaptive pressure bar multi-segment synchronous wire cutting device according to claim 1, characterized in that, Multiple wire cutting mechanisms (4) are synchronously driven by the same drive motor (16) through a rotating shaft (17); each wire cutting mechanism (4) includes a wire cutting fixing frame (401), two wire wheels (402) and diamond wire (403) wound on the two wire wheels (402), one of the wire wheels (402) is fixed on the rotating shaft (17), one end of the wire cutting fixing frame (401) is rotatably connected to the rotating shaft (17), and the other wire wheel (402) is rotatably installed on the other end of the wire cutting fixing frame (401); a protrusion (4011) is provided in the middle of the wire cutting fixing frame (401), and the protrusion (4011) abuts against the outer surface of the arc-shaped pressure plate (5).

7. The adaptive pressure bar multi-segment synchronous wire cutting device according to claim 6, characterized in that, The downward driving device (7) is an electric cylinder, the output end of which is hinged to the wire cutting fixture (401).

8. The adaptive pressure bar multi-segment synchronous wire cutting device according to claim 1, characterized in that, The frame (1) is provided with a feed inlet (101) that is connected to the feed roller (2). A bar material sorting mechanism is installed on one side of the feed inlet (101). The bar material sorting mechanism includes a push plate (12) and a cylinder (13) connected to the push plate (12). The cylinder (13) is used to drive the push plate (12) to reciprocate axially within the feed inlet (101).

9. The adaptive pressure bar multi-segment synchronous wire cutting device according to claim 1, characterized in that, It also includes an arc-shaped baffle (14) and a conveyor line (15). The arc-shaped baffle (14) is set on the downstream side of the cutting station along the feeding direction of the feeding roller (2) and surrounds the outer circumference of the feeding roller (2) to form a bar segment guiding channel. The conveyor line (15) is set below the arc-shaped baffle (14) and includes a conveyor belt (1501). The outer surface of the conveyor belt (1501) is uniformly provided with multiple receiving grooves. The extending direction of the receiving grooves is consistent with the extending direction of the material trough (202) and is used to receive the bar segments that are guided and slid down by the bar segment guiding channel.

10. The adaptive pressure bar stock multi-segment synchronous wire cutting device according to claim 1, characterized in that, The feeding roller (2) is provided with a plurality of first wire cutting clearance grooves (204) spaced apart along the axial direction. Each first wire cutting clearance groove (204) extends circumferentially along the feeding roller (2) and radially penetrates each of the material grooves (202), and corresponds one-to-one with the cutting position of each of the wire cutting mechanisms (4). Each arc-shaped pressure plate (5) is provided with a plurality of second wire cutting clearance grooves (502). The second wire cutting clearance grooves (502) are provided through the arc-shaped pressure plate (5) along the thickness direction, and correspond one-to-one with the position of each of the first wire cutting clearance grooves (204).

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