Automatic unloading mechanism of high-stability numerical control band sawing machine and control method thereof

Abstract

This invention relates to the technical field of band saws, and discloses an automatic unloading mechanism and control method for a high-stability CNC band saw. The band saw includes a cutting component, a fixing component, a feeding component, and an unloading component. The cutting component includes a worktable, a band saw frame mounted on the worktable, and a control console connected to the band saw frame. The fixing component, feeding component, and unloading component are also included. The automatic unloading mechanism and control method of the high-stability CNC band saw of this invention enable single-person operation. The material is clamped, and the mounting frame is manually pushed forward. The guide rail and slider ensure that the material advances the same distance each time. The band saw frame cuts workpieces of the same thickness, and the workpieces automatically fall into the conveyor frame for storage. After all the material is cut, it is controlled to be discharged from the conveyor frame one by one, facilitating collection by the worker. The control method reduces saw band deviation and abnormal wear by controlling the uniform and stable servo feed speed, extending service life, and improving cutting accuracy and surface quality.

Description

Technical Field

[0001] This invention relates to the technical field of band saws, and more particularly to an automatic unloading mechanism and control method for a highly stable CNC band saw. Background Technology

[0002] Band saws are mainly used for sawing various metal materials with suitable cut sizes, but they face the challenge of insufficient sawing stability when cutting high-hardness materials. The saw band vibrates violently due to uneven material resistance, leading to deviation, accelerated wear, and even breakage. Traditional mechanical springs or hydraulic damping devices have limited response speed and adjustment precision, making it difficult to effectively suppress high-frequency vibrations, affecting cutting accuracy and saw band life. While existing band saws can achieve automatic feeding and clamping, the unloading process still relies on manual labor, resulting in low efficiency and safety hazards. Therefore, there is an urgent need for a band saw that can simultaneously solve these problems. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the automatic feeding mechanism and control method of the existing high-stability CNC band saw, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide an automatic feeding mechanism and control method for a highly stable CNC band saw, which can achieve automatic feeding and effectively suppress saw band vibration, thereby extending the service life of the saw band.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automatic unloading mechanism for a high-stability CNC band saw, comprising: a cutting assembly including a worktable, a band saw frame disposed on the worktable, and a control console connected to the band saw frame; a fixing assembly disposed on the worktable, including a mounting frame, a guide ring disposed on the mounting frame, a drive ring rotatably disposed within the guide ring, a telescopic cylinder connected to the drive ring, a clamping block slidably disposed on the mounting frame, and a gear disposed between the clamping block and the drive ring; a feeding assembly disposed at the bottom of the mounting frame, including a guide rail fixedly connected to the worktable, a slider slidably disposed on the guide rail, a limiting rod slidably disposed within the slider, a first spring disposed between the slider and the limiting rod, a reset rod disposed outside the slider, and a second spring disposed on the reset rod; and an unloading assembly inclinedly disposed below the band saw frame, including a conveyor frame, a crossbar rotatably disposed on one side of the conveyor frame, a ratchet fixedly connected to the crossbar, a pawl embedded in the ratchet, a third spring disposed on the pawl, a transmission rod connected to the pawl, and a trigger rod connected to the transmission rod.

[0007] As a preferred embodiment of the automatic unloading mechanism of the high-stability CNC band saw of the present invention, the band saw frame can be raised and lowered on the worktable, and the control console controls the band saw frame to cut.

[0008] As a preferred embodiment of the automatic unloading mechanism of the high-stability CNC band saw of the present invention, the mounting frame is provided with a through hole, and four straight grooves are provided around the through hole; the guide ring is partially circular, and a groove is provided on the inner wall of the guide ring; the drive ring is embedded in the groove, and the inner wall of the drive ring is provided with toothed grooves; the fixed end of the telescopic cylinder is rotatably connected to the mounting frame, and the telescopic end is rotatably connected to the drive ring.

[0009] As a preferred embodiment of the automatic unloading mechanism of the high-stability CNC band saw of the present invention, the clamping blocks are provided with four, each clamping block is slidably disposed in the slot, each clamping block is provided with a right-angle end, and the clamping blocks are arranged in close contact with each other through the right-angle ends; the clamping blocks are also provided with tooth grooves, and four gears are provided and rotatably disposed on the mounting frame, the gears respectively meshing with the tooth grooves on the clamping blocks and the drive ring.

[0010] As a preferred embodiment of the automatic unloading mechanism of the high-stability CNC band saw of the present invention, the guide rail is provided with a plurality of equidistantly arranged limiting holes, a baffle is provided at one end of the bottom of the guide rail, and a ramp is provided at the other end; the top of the slider is fixedly connected to the mounting frame, the limiting rod is vertically slidably disposed in the slider, the end section of the limiting rod is a right-angled triangle, the end of the limiting rod can be embedded in the limiting hole, and a notch is also provided on the side wall of the limiting rod; one end of the first spring is fixedly connected to the inner wall of the slider, and the other end is fixedly connected to the limiting rod.

[0011] As a preferred embodiment of the automatic unloading mechanism of the high-stability CNC band saw of the present invention, the reset rod is horizontally slidably disposed on the side wall of the slider, a crossbar is provided on the reset rod, the crossbar can be embedded in the notch, one end of the second spring is fixedly connected to the reset rod, and the other end is fixedly connected to the slider.

[0012] As a preferred embodiment of the automatic unloading mechanism of the high-stability CNC band saw described in this invention, the conveyor frame inlet is located below the band saw frame, the crossbar is placed in the conveyor frame, the ratchet is located at the bottom of the crossbar, the ratchet is coaxial with the crossbar, and four positioning holes are equidistantly provided on the ratchet.

[0013] As a preferred embodiment of the automatic unloading mechanism of the high-stability CNC band saw of the present invention, the pawl is rotatably disposed next to the ratchet, the end of the pawl is embedded in the positioning hole, and the third spring causes the pawl to retract toward the positioning hole; one end of the transmission rod is rotatably connected to the end of the pawl, and the other end is rotatably connected to the trigger rod, the trigger rod is rotatably disposed on the conveyor frame, and the trigger rod portion is placed inside the conveyor frame.

[0014] The control method for the automatic unloading mechanism of a high-stability CNC band saw includes:

[0015] A pressure sensor is installed in the clamping block to detect the pressure value received by the material in real time. When the detected pressure value does not reach the set value, the telescopic cylinder continues to operate. When the detected pressure value reaches the set value, the telescopic cylinder stops operating.

[0016] An acceleration sensor is installed on the band saw frame to detect the frequency received by the saw band. When the detected frequency does not reach the set value, the saw band continues to rotate normally; when the detected frequency reaches the set value, the PLC automatic control system device corrects the operation.

[0017] The beneficial effects of this invention are:

[0018] The automatic feeding mechanism and control method of the high-stability CNC band saw in this invention enable single-person operation. The material is clamped, and the mounting frame is manually pushed forward. The guide rail and slider ensure that the material advances the same distance each time. The band saw cuts workpieces of the same thickness, and the workpieces can automatically fall into the conveyor frame for storage. After all the material is cut, the material is controlled to be discharged from the conveyor frame one by one, which is convenient for workers to collect. The control method reduces saw band deviation and abnormal wear by controlling the uniform and stable servo feed speed, thus extending the service life and improving cutting accuracy and surface quality. Attached Figure Description

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

[0020] Figure 1 This is a schematic diagram of the overall structure of the automatic feeding mechanism of the high-stability CNC band saw of the present invention.

[0021] Figure 2 This is a side view of the overall structure of the automatic unloading mechanism of the high-stability CNC band saw of the present invention.

[0022] Figure 3 This is a schematic diagram of the fixed component structure of the automatic unloading mechanism of the high-stability CNC band saw of the present invention.

[0023] Figure 4 This is a side view of the fixed component structure of the automatic unloading mechanism of the high-stability CNC band saw of the present invention.

[0024] Figure 5 This is a schematic diagram of the internal structure of the guide ring of the automatic unloading mechanism of the high-stability CNC band saw of the present invention.

[0025] Figure 6 This is a schematic diagram of the feeding component structure of the automatic unloading mechanism of the high-stability CNC band saw of the present invention.

[0026] Figure 7 This is a cross-sectional view of the feeding component structure of the automatic unloading mechanism of the high-stability CNC band saw of the present invention.

[0027] Figure 8 This is a schematic diagram of the unloading component structure of the automatic unloading mechanism of the high-stability CNC band saw of the present invention.

[0028] Figure 9 This is a schematic diagram of the internal structure of the conveyor frame of the automatic unloading mechanism of the high-stability CNC band saw of the present invention.

[0029] Figure 10 This is a schematic diagram of the automatic unloading mechanism of the high-stability CNC band saw of the present invention, omitting the conveyor frame structure.

[0030] Figure 11 This is a schematic diagram of the crossbar structure of the automatic unloading mechanism of the high-stability CNC band saw of the present invention.

[0031] Reference numerals: 100, cutting assembly; 101, worktable; 102, band saw frame; 103, control console; 200, fixing assembly; 201, mounting bracket; 201a, through hole; 201b, straight groove; 202, guide ring; 202a, groove; 203, drive ring; 204, telescopic cylinder; 205, clamping block; 206, gear; 300, feeding assembly; 301, guide rail; 301a, limiting hole; 3 01b, baffle; 301c, ramp; 302, slider; 303, limit rod; 303a, notch; 304, first spring; 305, reset rod; 305a, crossbar; 306, second spring; 400, unloading assembly; 401, conveyor frame; 402, crossbar; 403, ratchet; 403a, positioning hole; 404, pawl; 405, third spring; 406, transmission rod; 407, trigger rod. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0036] Reference Figures 1 to 11As an embodiment of the present invention, an automatic unloading mechanism for a high-stability CNC band saw is provided. This band saw includes a cutting assembly 100, a fixing assembly 200, a feeding assembly 300, and an unloading assembly 400. The cutting assembly 100 includes a worktable 101, a band saw frame 102 mounted on the worktable 101, and a control console 103 connected to the band saw frame 102. The fixing assembly 200, mounted on the worktable 101, includes a mounting frame 201, a guide ring 202 mounted on the mounting frame 201, a drive ring 203 rotatably mounted within the guide ring 202, a telescopic cylinder 204 connected to the drive ring 203, a clamping block 205 slidably mounted on the mounting frame 201, and a gear 206 disposed between the clamping block 205 and the drive ring 203. The feeding assembly 300 is mounted on the worktable 101. The bottom of the mounting frame 201 includes a guide rail 301 fixedly connected to the worktable 101, a slider 302 slidably disposed on the guide rail 301, a limiting rod 303 slidably disposed within the slider 302, a first spring 304 disposed between the slider 302 and the limiting rod 303, a reset rod 305 disposed outside the slider 302, and a second spring 306 disposed on the reset rod 305; the unloading assembly 400 is inclinedly disposed below the band saw frame 102 and includes a conveyor frame 401, a cross bar 402 rotatably disposed on one side of the conveyor frame 401, a ratchet 403 fixedly connected to the cross bar 402, a pawl 404 embedded in the ratchet 403, a third spring 405 disposed on the pawl 404, a transmission rod 406 connected to the pawl 404, and a trigger rod 407 connected to the transmission rod 406.

[0037] The band saw frame 102 can be raised and lowered on the workbench 101, and the control console 103 controls the band saw frame 102 to cut. The mounting frame 201 has a through hole 201a, and four straight grooves 201b are formed around the through hole 201a. The guide ring 202 is partially circular, and a groove 202a is formed on its inner wall. The drive ring 203 is embedded in the groove 202a, and its inner wall has toothed grooves. The fixed end of the telescopic cylinder 204 is rotatably connected to the mounting frame 201, and its telescopic end is rotatably connected to the drive ring 203. Four clamping blocks 205 are provided, each slidably disposed within a groove 201b. Each clamping block 205 has a right-angled end, and the clamping blocks 205 are arranged in close contact through these right-angled ends. The clamping blocks 205 also have toothed grooves. Four gears 206 are provided and rotatably disposed on the mounting frame 201. The gears 206 mesh with the toothed grooves on the clamping blocks 205 and the drive ring 203, respectively.

[0038] To clamp the material, the material is inserted along the through hole 201a using the above method. It should be noted that the band saw frame 102 can only cut material passing through the through hole 201a. Therefore, the main body of the material should be inserted into the through hole 201a. The telescopic cylinder 204 is then activated, extending its telescopic end and pushing the drive ring 203 to rotate within the guide ring 202. The drive ring 203 has toothed grooves; their rotation causes the four gears 206 in the inner ring to rotate synchronously. The gears 206 then mesh with the toothed grooves on the clamping block 205. The drive ring 203... The rotation can transmit power to the toothed groove of the clamping block 205, causing the clamping block 205 to move along the groove 201b. The clamping blocks 205 are arranged at right angles to form a square movable hole. When the clamping block 205 moves along the groove 201b, it can tighten the hole to clamp and fix the material in the through hole 201a. This fixing mechanism can fix square or cylindrical materials. When releasing, simply retract the telescopic cylinder 204, reverse the drive ring 203, and drive the clamping block 205 to move in the opposite direction along the groove 201b. The hole between the clamping blocks 205 expands, and no material is released.

[0039] For precise manual feeding, several equidistant limiting holes 301a are provided on the guide rail 301. A baffle 301b is provided at one end of the bottom of the guide rail 301, and a ramp 301c is provided at the other end. The top of the slider 302 is fixedly connected to the mounting bracket 201. The limiting rod 303 is vertically slidably disposed within the slider 302. The end section of the limiting rod 303 is a right-angled triangle, and the end of the limiting rod 303 can be inserted into the limiting hole 301a. A notch 303a is also provided on the side wall of the limiting rod 303. One end of the first spring 304 is fixedly connected to the inner wall of the slider 302, and the other end is fixedly connected to the limiting rod 303. The reset rod 305 is horizontally slidably disposed on the side wall of the slider 302. A crossbar 305a is provided on the reset rod 305, and the crossbar 305a can be inserted into the notch 303a. One end of the second spring 306 is fixedly connected to the reset rod 305, and the other end is fixedly connected to the slider 302.

[0040] The slider 302 is fixedly connected to the mounting bracket 201, so the slider 302 can drive the clamped material into the working area of ​​the band saw frame 102. In order to ensure that the distance of each material feeding can be accurately controlled by the operator, a limiting rod 303 is set in the slider 302. When the slider 302 moves to the limiting hole 301a on the guide rail 301, the first spring 304 pushes the limiting rod 303 into the limiting hole 301a to complete the positioning of the slider 302. The band saw frame 102 is controlled by the control console 103. The control console 103 can make the band saw frame 102 gradually lower to cut the material. After the cutting is completed, the control console 103 makes the band saw frame 102 lift up again and return to the initial position. After the material is cut once, the slider 302 is pushed. Since the end section of the limiting rod 303 is a right triangle with a slope on the hypotenuse, pushing the slider 302 will cause the limiting rod 303 to squeeze back into the slider 302 and squeeze the first spring 304 until the slider 302 moves to the next position. The limiting hole 301a is reached, and the first spring 304 pushes the limiting rod 303 back into the limiting hole 301a, completing the positioning of the slider 302. When the slider 302 moves to the end of the guide rail 301 after multiple cutting operations, it is necessary to return the slider 302 to its initial position and push it forward again, so that the end of the limiting rod 303 is lifted along the slope 301c. At this time, the limiting rod 303 compresses the first spring 304, and at the same time, the notch 303a on the limiting rod 303 moves to the return position. On the horizontal plane where the positioning rod 305 is located, the second spring 306 drives the crossbar 305a on the reset rod 305 to embed into the notch 303a. At this time, the limiting rod 303 is fixed, and the slider 302 can retract along the guide rail 301 to the initial position. The baffle 301b squeezes the reset rod 305, causing it to move forward and push the crossbar 305a out of the notch 303a. The limiting rod 303 is no longer fixed and returns to the initial position. The reset rod 305 is reset by the second spring 306. Thus, the mounting bracket 201 returns to the initial position, and a different material can be used for fixing and cutting.

[0041] For automatic material unloading, the inlet of the conveyor frame 401 is located below the band saw frame 102. A portion of the crossbar 402 is inserted into the conveyor frame 401. A ratchet 403 is located at the bottom of the crossbar 402, coaxial with the crossbar 402. Four equidistant positioning holes 403a are provided on the ratchet 403. A pawl 404 is rotatably positioned next to the ratchet 403, with its end embedded in the positioning hole 403a. A third spring 405 causes the pawl 404 to retract towards the positioning hole 403a. One end of the transmission rod 406 is rotatably connected to the end of the pawl 404, and the other end is rotatably connected to the rod portion of the trigger rod 407. The trigger rod 407 is rotatably positioned on the conveyor frame 401, with a portion inserted into the conveyor frame 401.

[0042] Preferably, an inclined inlet can be provided on the workbench 101 to connect with the conveyor frame 401, facilitating the automatic falling of the cut material into the conveyor frame 401. After multiple cuts, the workpieces fall into the conveyor frame 401 one by one. Because the cross bar 402 blocks the workpieces, and the coaxial ratchet 403 is stuck by the pawl 404 and cannot rotate, the workpieces are accumulated above the cross bar 402. After a single person completes the cutting of the material, the trigger rod 407 is activated. The trigger rod 407 pulls the pawl 404 through the transmission rod 406, causing it to move away from the positioning hole 403a. The ratchet 403 does not... Once fixed, the cross bar 402, which is coaxially fixed, can rotate, allowing the workpiece to slide down normally. As the cross bar 402 rotates ninety degrees, the pawl 404, under the restoring force of the third spring 405, is inserted into the next positioning hole 403a, and the ratchet 403 is fixed again, stopping the workpiece feeding. At the same time, the sliding workpiece will pass through the trigger rod 407, triggering the trigger rod 407, and repeating the above steps to feed another workpiece. The workpiece will then trigger the trigger rod 407 again, thus allowing the workpiece to be fed automatically in a cycle, with a certain interval for workers to collect them one by one.

[0043] The control method for the automatic unloading mechanism of a high-stability CNC band saw includes:

[0044] A pressure sensor is installed in the clamping block 205 to detect the pressure value received by the material in real time. When the detected pressure value does not reach the set value, the telescopic cylinder 204 continues to operate. When the detected pressure value reaches the set value, the telescopic cylinder 204 stops operating.

[0045] An acceleration sensor is installed on the band saw frame 102 to detect the frequency received by the saw blade. When the detected frequency does not reach the set value, the saw blade continues to rotate normally; when the detected frequency reaches the set value, the PLC automatic control system corrects the operation. The acceleration sensor feeds the signal back to the PLC automatic control system, which then controls the operation of the balance cylinder and high-pressure water sprayer to adjust the cutting reaction force on the saw blade, prevent the saw blade from deviating and abnormally wearing, protect the saw blade, and ultimately complete the material cutting.

[0046] By adjusting the dynamic damping of the nitrogen balance cylinder, the speed reducer, the chip removal brush, and the high-pressure water sprayer, the saw blade can be fully cooled, effectively suppressing vibration and eliminating noise during the cutting of high-hardness materials, achieving complete chip removal, controlling the uniform and stable servo feed speed, reducing saw blade deviation and abnormal wear, extending service life, and improving cutting accuracy and surface quality.

[0047] Through experiments and data analysis, a highly stable CNC band saw can be developed. This band saw achieves high cutting speeds, saves on saw blades, and maintains stable blade movement during the cutting process. The basic conditions of the experimental equipment (operating environment and power parameters) are: a 380VAC±10% 50Hz±5Hz three-phase AC power supply; an experimental ambient temperature ranging from -10℃ to +45℃; and an operating environment free from rain and snow, clean air free of conductive dust, corrosive gases, and gases that damage insulation. The maximum cutting range (width × height) of the band saw is 360mm x 360mm, and the maximum sawing diameter is Φ36mm. The maximum load productivity experiment was ≥235cm² / min for 45# steel (round bar), with saw blade specifications (width x thickness) of 41mm*1.3mm, a permissible load weight of 3T on the worktable, a machine operating noise of less than 85db, saw blade speed of 30m / min-250m / min (variable frequency stepless speed regulation), feed speed of 0-500mm / min (servo stepless speed regulation), hydraulic pump power of 1.5KW, workpiece servo motor power of 0.85KW, cooling pump power of 1KW, main motor power of 7.5KW, and a single feed stroke (hydraulic) of 500mm. Table 1 below shows the data analysis of the experimental cutting materials.

[0048] Table 1 Data Analysis of Experimental Cutting Materials

[0049]

[0050]

[0051] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0053] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A high-stability numerical control band saw machine automatic unloading mechanism, characterized in that: The utility model relates to a cutting assembly (100) including a workbench (101), a band saw frame (102) arranged on the workbench (101), a control console (103) arranged on the band saw frame (102), a fixing assembly (200) arranged on the workbench (101) including a mounting frame (201), a guide ring (202) arranged on the mounting frame (201), a driving ring (203) rotatably arranged in the guide ring (202), a telescopic cylinder (204) connected with the driving ring (203), a clamping block (205) slidably arranged on the mounting frame (201), a gear (206) arranged between the clamping block (205) and the driving ring (203), a feeding assembly (300) arranged at the bottom of the mounting frame (201) including a guide rail (301) fixedly connected with the workbench (101), a sliding block (302) slidably arranged on the guide rail (301), a limiting rod (303) slidably arranged in the sliding block (302), a first spring (304) arranged between the sliding block (302) and the limiting rod (303), a reset rod (305) arranged outside the sliding block (302), a second spring (306) arranged on the reset rod (305), a blanking assembly (400) obliquely arranged below the band saw frame (102) including a conveying frame (401), a cross rod (402) rotatably arranged on one side of the conveying frame (401), a ratchet wheel (403) fixedly connected with the cross rod (402), a pawl (404) embedded in the ratchet wheel (403), a third spring (405) arranged on the pawl (404), a transmission rod (406) connected with the pawl (404), a trigger rod (407) connected with the transmission rod (406). The band saw frame (102) can be lifted on the workbench (101), and the control console (103) controls the cutting of the band saw frame (102). The mounting frame (201) is provided with a through hole (201a), four straight grooves (201b) are arranged around the through hole (201a), the guide ring (202) is a part of a circle, a groove (202a) is arranged on the inner wall of the guide ring (202), the driving ring (203) is embedded in the groove (202a), the inner wall of the driving ring (203) is provided with a gear slot, the fixed end of the telescopic cylinder (204) is rotatably arranged on the mounting frame (201), and the telescopic end is rotatably connected with the driving ring (203). The clamping block (205) is provided with four clamping blocks (205), each clamping block (205) is slidably arranged in the groove (201b), the clamping block (205) is provided with a right-angle end, the clamping blocks (205) are arranged by abutting the right-angle ends, the clamping block (205) is further provided with a gear slot, the gear (206) is provided with four gears (206) and is rotatably arranged on the mounting frame (201), and the gears (206) are respectively engaged with the gear slots on the clamping blocks (205) and the driving ring (203). ​ 2. The automatic unloading mechanism of the high-stability numerical control band saw machine according to claim 1, characterized in that: ​ 3. The automatic unloading mechanism of the high-stability numerical control band saw machine according to claim 2, characterized in that: ​ 4. The automatic unloading mechanism of the high-stability numerical control band saw machine according to claim 3, characterized in that: ​ 5. The automatic unloading mechanism of the high-stability numerical control band saw machine according to claim 4, characterized in that: The guide rail (301) is provided with a plurality of equidistantly arranged limiting holes (301a), the bottom of the guide rail (301) is provided with a baffle (301b) at one end and a slope (301c) at the other end; the top of the sliding block (302) is fixedly connected with the mounting frame (201), the limiting rod (303) is vertically and slidingly arranged in the sliding block (302), the end of the limiting rod (303) is a right triangle in cross section, the end of the limiting rod (303) can be embedded in the limiting hole (301a), and the sidewall of the limiting rod (303) is also provided with a notch (303a); one end of the first spring (304) is fixedly connected with the inner wall of the sliding block (302), and the other end is fixedly connected with the limiting rod (303).

6. The automatic unloading mechanism of the high-stability numerical control band saw machine according to claim 5, characterized in that: The reset rod (305) is horizontally and slidingly arranged on the sidewall of the sliding block (302), the reset rod (305) is provided with a cross rod (305a), the cross rod (305a) can be embedded in the notch (303a), one end of the second spring (306) is fixedly connected with the reset rod (305), and the other end is fixedly connected with the sliding block (302).

7. The automatic unloading mechanism of the high-stability numerical control band saw machine according to claim 6, characterized in that: The conveying frame (401) is arranged below the band saw frame (102), the cross rod (402) is partially arranged in the conveying frame (401), the ratchet wheel (403) is arranged at the bottom of the cross rod (402), the ratchet wheel (403) is coaxial with the cross rod (402), and four positioning holes (403a) are equidistantly arranged on the ratchet wheel (403).

8. The automatic unloading mechanism of the high-stability numerical control band saw machine according to claim 7, characterized in that: The pawl (404) is rotatably arranged beside the ratchet wheel (403), the end of the pawl (404) is embedded in the positioning hole (403a), and the third spring (405) makes the pawl (404) shrink to the positioning hole (403a); One end of the transmission rod (406) is rotatably connected with the end of the pawl (404), and the other end is rotatably connected with the rod portion of the trigger rod (407), the trigger rod (407) is rotatably arranged in the conveying frame (401), and the trigger rod (407) is partially arranged in the conveying frame (401).

9. The control method of the automatic unloading mechanism of the high-stability numerical control band saw machine according to claim 8, characterized in that: Comprising: A pressure sensor is arranged in the clamping block (205) to detect the pressure value received by the material in real time, when the detected pressure value does not reach the set value, the telescopic cylinder (204) continues to run, and when the detected pressure value reaches the set value, the telescopic cylinder (204) stops running; An acceleration sensor is arranged on the band saw frame (102) to detect the frequency received by the sawing band, when the detected frequency does not reach the set value, the sawing band continues to rotate normally, and when the detected frequency reaches the set value, the PLC automatic control system device corrects.

Images