Die steel cutting equipment

Abstract

The invention relates to die steel cutting equipment, and relates to the technical field of die steel machining. The equipment comprises a rack, a portal frame, a cutting mechanism, a driving mechanism, a safety buffer, a pressing and fixing mechanism and a positioning mechanism. The top of the rack is provided with a transmission roll shaft for conveying cut pieces; a driving mechanism on the portal frame drives the walking arm to move along the sliding rail through a lead screw transmission assembly, and a saw wheel of the cutting mechanism is driven to complete cutting feeding. In the safety buffer, vibration of a saw wheel is transmitted to a movable sleeve through a shifting sleeve and an insulating ball, vibration energy is absorbed through a buffer spring, the buffer spring is compressed to a limiting position during tooth clamping, a first electrode block and a second electrode block are in contact to form a conductive loop, and speed reduction protection of a generator can be triggered. The pressing and fixing mechanism and the positioning mechanism fix the cutting piece in the vertical direction and the horizontal direction correspondingly, and stable cutting is guaranteed. The die steel cutting device can effectively absorb shock, prevent the saw wheel from cracking, improve the cutting precision and the equipment safety, and is suitable for efficient and accurate cutting of die steel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of die steel processing, in particular to a die steel cutting equipment. BACKGROUND

[0002] In the field of die steel processing, cutting equipment is the key equipment to realize accurate material forming, and the core component saw wheel completes cutting operation through the driving of the driving mechanism. The saw wheel always maintains a high-speed rotating state during work, and the severe vibration generated thereby becomes a key factor affecting the stability and service life of the equipment.

[0003] If the saw wheel and the driving mechanism are rigidly connected, the vibration will be directly transmitted to the driving mechanism, which will easily lead to wear, looseness and even failure of the driving components under long-term operation, thereby increasing the equipment maintenance cost and possibly causing production safety hazards due to sudden failure.

[0004] To alleviate this problem, the existing technology generally adds a buffer spring at the connection between the driving mechanism and the saw wheel, expecting to absorb the vibration energy through the elastic deformation of the spring. However, in actual application, this scheme has exposed a significant defect: during the cutting of die steel, the saw wheel often appears to be stuck due to uneven material hardness, impurities embedded and other reasons. Although the high-speed rotation of the saw wheel can overcome the resistance of the stuck teeth in most cases, the stuck teeth will suddenly exert a huge impact force on the buffer spring, causing the spring to be sharply compressed to the limit state.

[0005] The completely compressed spring will release a powerful reaction force in an instant, which will form a superposition effect with the impact force generated by the stuck teeth, causing the saw wheel to swing greatly. This irregular swing is coupled with the high-speed rotation of the saw wheel itself, making the cutting trajectory of the saw wheel completely out of control, which not only seriously affects the cutting accuracy, but also may cause the saw wheel to crack due to stress concentration, resulting in equipment damage and material scrap, greatly restricting the efficiency and safety of die steel cutting processing. SUMMARY

[0006] To solve the above problems, the present application provides a die steel cutting equipment.

[0007] A die steel cutting equipment, comprising a rack, a gantry fixedly arranged on the rack, a cutting mechanism and a driving mechanism arranged on the gantry in a horizontal direction, the cutting mechanism comprising a saw wheel for performing cutting operation; The driving mechanism comprises a slide rail fixed on the top of the portal frame by bolts, a walking arm slidingly mounted on the slide rail by a sliding block, a safety buffer fixedly installed at the end of the walking arm away from the slide rail, the safety buffer comprising a buffer spring and a horizontally arranged conductive shaft, the conductive shaft comprising a cylindrical sliding portion and extension portions and a fixed portion integrally formed at both ends of the sliding portion, the extension portions and the fixed portion being collinear in axis and having a smaller diameter than the sliding portion, a pushing sleeve axially slidingly movably sleeved on the sliding portion, and an active sleeve axially movably sleeved on the outside of the extension portions, the saw wheel being kept synchronous movement with the pushing sleeve through a connecting piece; The side end of the pushing sleeve close to the active sleeve is inwardly recessed to form a horn-shaped driving hole, the small-diameter end of the driving hole facing the sliding portion and the large-diameter end facing the active sleeve, the side end of the active sleeve close to the pushing sleeve being provided with a chamfer matched with the driving hole, the driving hole being coaxially sleeved on the outside of the active sleeve when the pushing sleeve slides along the sliding portion towards the active sleeve, and at least two insulating balls being rollingly arranged between the inner wall of the driving hole and the chamfer of the active sleeve. The end face of the active sleeve away from the pushing sleeve is axially recessed to form an accommodating groove, one end of the buffer spring being embedded in the accommodating groove and abutting against the groove bottom, the other end of the buffer spring being fixedly connected with an electrode block one, the end of the fixed portion away from the sliding portion being fixedly provided with an electrode block two opposite to the electrode block one, the electrode block one and the electrode block two being in contact and forming a conductive loop when the active sleeve is compressed by an axial force to compress the buffer spring to a limit position.

[0008] Preferably, an active hole penetrating in the axial direction is formed in the inside of the active sleeve, the diameter of the active hole being larger than that of the extension portion and not being communicated with the accommodating groove, the active sleeve being gap-fitted and sleeved on the outside of the extension portion and being axially slidable along the extension portion through the active hole.

[0009] By adopting the above technical scheme, the active hole provides stable guidance for the axial sliding of the active sleeve along the extension portion, avoiding deviation or jamming of the active sleeve during sliding, and the design that the active hole is not communicated with the accommodating groove can prevent the buffer spring from interfering with the inner wall of the active hole during compression or rebound, ensuring normal deformation of the buffer spring and thus stable and reliable buffering effect of the safety buffer.

[0010] Preferably, a sliding hole gap-fitted with the sliding portion is formed in the inside of the pushing sleeve in the axial direction, the sliding hole being coaxially communicated with the driving hole and having a smaller diameter than the small-diameter end of the driving hole, the pushing sleeve reciprocally sliding on the sliding portion through the sliding hole.

[0011] By adopting the technical scheme, the clearance fit between the sliding hole and the sliding part not only ensures that the driving sleeve can smoothly reciprocate on the sliding part, but also plays a good guiding role on the sliding direction of the driving sleeve, preventing it from radial shaking; and the design that the diameter of the sliding hole is smaller than the diameter of the small end of the driving hole can form a step structure, which can limit the sliding stroke of the driving sleeve to a certain extent, avoid the collision between the driving sleeve and other components caused by excessive sliding of the driving sleeve, and ensure that the chamfer of the driving hole and the movable sleeve can be accurately matched to ensure the normal rolling transmission of the insulating ball.

[0012] Preferably, the outer circumferential surface of the driving sleeve is radially recessed to form an annular driving groove, the connecting piece includes a connecting part and a driving sleeve part, the driving sleeve part is clamped in the driving groove and clearance fits with the groove wall, the saw wheel is installed at the end of the connecting part through a bearing seat, and the central shaft of the saw wheel is connected with the output shaft of the driving motor through a shaft coupling.

[0013] By adopting the technical scheme, the cooperation mode of the driving sleeve part and the driving groove can realize stable synchronous motion transmission between the saw wheel and the driving sleeve, the driving sleeve part can make the stress uniform to avoid the deflection of the driving sleeve when stressed; the clearance fit ensures that the driving sleeve part and the driving groove will not affect the smoothness of relative motion due to excessive friction; at the same time, the installation of the saw wheel through the bearing seat and the shaft coupling connection with the driving motor can ensure the stability of the saw wheel during high-speed rotation and reduce the additional vibration caused by improper installation.

[0014] Preferably, the driving mechanism further includes a lead screw transmission assembly for driving the walking arm to move along the slide rail and a driving motor, the lead screw transmission assembly includes a ball screw arranged in parallel with the slide rail and a nut seat screwed on the lead screw, the nut seat is fixedly connected with the walking arm, and the output shaft of the driving motor is in transmission connection with the end of the ball screw through a speed reducer.

[0015] By adopting the technical scheme, the lead screw transmission assembly has the characteristics of high transmission precision and stable operation, can accurately control the moving distance and speed of the walking arm along the slide rail, and thus ensures the cutting accuracy of the saw wheel; the speed reducer can convert the high rotation speed of the driving motor into the appropriate rotation speed required by the ball screw, improve the output torque, and ensure that the walking arm can stably drive the saw wheel and other components to move, meeting the requirement of driving force for cutting operation.

[0016] Preferably, a plurality of transmission roller shafts are arranged at the top of the rack along the feeding path of the cutting member at intervals, the two ends of the transmission roller shaft are rotationally connected with the rack through bearing seats, and the top tangents of all the transmission roller shafts are on the same horizontal plane.

[0017] By adopting the technical scheme, the transmission roller shaft can realize stable conveying of the cutting piece, the multiple transmission roller shafts arranged at intervals can provide uniform support for the cutting piece, and bending or deformation of the cutting piece during conveying can be avoided; the tangent lines at the top of all the transmission roller shafts are located on the same horizontal plane, which can ensure that the cutting piece is fed in a horizontal state, ensure the consistency of the height during saw wheel cutting, and improve the cutting quality.

[0018] Preferably, a pressing mechanism is arranged below the cross beam of the gantry, the pressing mechanism comprises a horizontally arranged pressing plate, a saw slot for the saw wheel to pass through is formed in the middle of the pressing plate, and the pressing mechanism further comprises a vertically arranged pressing cylinder, the cylinder body of the pressing cylinder is fixed on the gantry, and the piston rod end is fixedly connected with the upper surface of the pressing plate.

[0019] By adopting the technical scheme, the pressing cylinder can drive the pressing plate to move up and down, and the pressing plate can tightly press the cutting piece on the transmission roller shaft during cutting operation, so that displacement or jumping of the cutting piece due to the cutting force of the saw wheel is prevented; the saw slot provides a passage for the saw wheel to pass through the pressing plate, so that the saw wheel can normally perform cutting operation, and the pressing plate does not interfere with the movement of the saw wheel.

[0020] Preferably, a plurality of rectangular pressing blocks are uniformly fixed on the inner walls of the two sides of the saw slot along the length direction of the saw slot, the bottom of the pressing block is lower than the lower surface of the pressing plate, the saw wheel moves along the length direction of the saw slot, and the length direction of the pressing block is perpendicular to the feeding direction of the cutting piece.

[0021] By adopting the technical scheme, the bottom of the pressing block is lower than the lower surface of the pressing plate, so that the pressing block can first contact the cutting piece and apply pressure during the pressing process, improving the reliability of the pressing; the rectangular pressing blocks are uniformly arranged along the length direction of the saw slot, and can uniformly press the cutting piece; the length direction of the pressing block is perpendicular to the feeding direction of the cutting piece, which can better resist the stress of the cutting piece along the feeding direction during cutting, further preventing the movement of the cutting piece and ensuring the cutting accuracy.

[0022] Preferably, positioning mechanisms are arranged on both sides of the transmission roller shaft on the rack, the positioning mechanisms comprise two groups of push-moving assemblies symmetrically arranged at the two ends of the rack, the push-moving assemblies comprise horizontally arranged push block cylinders and push blocks, the cylinder body of the push block cylinder is fixed on the side surface of the rack, and the piston rod end is fixedly connected with the push block.

[0023] By adopting the technical scheme, the two groups of symmetric push-moving assemblies can push the cutting piece from both sides to adjust the cutting piece to the center position of the transmission roller shaft, realize preliminary positioning of the cutting piece in the horizontal direction, ensure the cutting position of the cutting piece is accurate, and avoid that the cutting size does not meet the requirements due to the placement offset of the cutting piece.

[0024] Preferably, the positioning mechanism further comprises a pressing assembly, the pressing assembly comprising a pressing cylinder vertically arranged on the top of the push block and a pressing block, the cylinder body of the pressing cylinder is fixedly connected with the push block, and the piston rod is fixedly connected with the upper surface of the pressing block, and the lower surface of the pressing block is correspondingly arranged with the top tangent line of the transmission roller shaft.

[0025] By adopting the above technical scheme, after the horizontal positioning of the pushing assembly is completed, the pressing assembly can drive the pressing block to move downward through the pressing cylinder, so as to press the cutting piece on the transmission roller shaft, realize the positioning of the cutting piece in the vertical direction, prevent the cutting piece from being lifted upward due to vibration or stress in the cutting process, further ensure the stability of the cutting piece, and improve the safety and cutting precision of the cutting process.

[0026] In summary, the present application has at least one of the following beneficial technical effects: 1. The safety buffer can effectively absorb the vibration energy generated during saw wheel cutting, reduce the influence of vibration on the driving mechanism, reduce the wear and failure risk of the driving parts, and prolong the service life of the equipment; at the same time, when the saw wheel is stuck, the electrode block one and the electrode block two are in contact to form a conductive loop, which can trigger the equipment control system to reduce the speed of the driving motor in time, avoid serious damage such as saw wheel cracking, and improve the safety of equipment operation.

[0027] 2. The cooperation of the pressing mechanism and the positioning mechanism can stably fix the cutting piece from horizontal and vertical directions, prevent the cutting piece from displacement or jumping during cutting process, ensure the cutting precision, and improve the cutting quality.

[0028] 3. The driving mechanism adopts a screw transmission assembly, which has high transmission precision and can accurately control the moving speed and distance of the saw wheel, meets the requirements of different cutting sizes, improves the applicability of the equipment, and the setting of the transmission roller shaft ensures the stable feeding of the cutting piece, further provides protection for cutting precision. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a perspective view of the present embodiment, mainly showing the overall structure of the equipment; Figure 2 is a partial enlarged view of the present embodiment, mainly showing the pressing assembly and the pushing assembly; Figure 3 and Figure 4 mainly show the structure of the walking arm and the pressing plate; Figure 5 mainly show the structure of the walking arm and the connecting piece; Figure 6 mainly show the structure of the safety buffer and the connecting piece; Figure 7 is a sectional view of the safety buffer, and the state is that the electrode block one and the electrode block two are not connected; Figure 8 is a sectional view of the safety buffer, state is that electrode block one and electrode block two are connected.

[0030] Explanation of reference numerals: 1, rack; 10, transmission roller shaft; 100, gantry; 11, saw wheel; 12, slide rail; 13, screw transmission assembly; 14, driving motor; 15, walking arm; 16, pressing solid plate; 17, pressing solid block; 171, saw groove; 18, pressing solid cylinder; 21, electrode block two; 22, buffer spring; 23, connecting piece; 231, knob sleeve part; 232, connecting part; 24, conductive shaft; 241, sliding part; 25, knob sleeve; 251, driving hole; 252, sliding hole; 253, knob groove; 242, extension part; 26, movable sleeve; 261, accommodating groove; 262, movable hole; 263, chamfer; 243, fixed part; 27, electrode block one; 28, insulating ball; 31, pressing block; 32, pressing cylinder; 33, push cylinder; 34, push block. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the accompanying drawings.

[0032] In the description of the application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0033] The embodiment of the application discloses a die steel cutting device, referring to Figure 1 , comprising a rack 1, a gantry 100, a cutting mechanism, a driving mechanism, a safety buffer, a pressing mechanism and a positioning mechanism. The rack 1 serves as the basic support structure of the whole device, and plays a role in stably placing and bearing other components. On the top of the rack 1, a plurality of transmission roller shafts 10 are arranged at intervals along the feeding path of the cutting piece. The two ends of the transmission roller shaft 10 are rotatably connected to the rack 1 through a bearing seat, and the top tangent lines of all the transmission roller shafts 10 are on the same horizontal plane. The die steel cutting piece is placed on the transmission roller shaft 10, and the feeding movement of the cutting piece is realized through the rotation of the transmission roller shaft 10. Referring to Figure 3 and Figure 4The gantry 100 is fixedly arranged on the frame 1, and a pressing mechanism and a cutting mechanism are arranged on the gantry 100. The gantry 100 provides mounting and supporting positions for the pressing mechanism and the cutting mechanism, and ensures the stability of the mechanisms during work. The cutting mechanism comprises a saw wheel 11 for performing cutting work. The saw wheel 11 is mounted at the end of the connecting portion 232 through a bearing seat, and the central shaft of the saw wheel 11 is connected with the output shaft of the driving motor 14 through a shaft coupling. After the driving motor 14 is started, the rotation of the output shaft is transmitted to the central shaft of the saw wheel 11 through the shaft coupling, so that the saw wheel 11 is driven to rotate at a high speed to perform cutting work on the mold steel. The driving mechanism comprises a sliding rail 12 fixedly arranged on the top of the gantry 100. The sliding rail 12 provides a guide function for the movement of a walking arm 15. The walking arm 15 is slidably arranged on the sliding rail 12 through a sliding block, and can move along the horizontal direction of the sliding rail 12. A safety buffer is fixedly arranged at the end of the walking arm 15 away from the sliding rail 12.

[0034] The driving mechanism further comprises a lead screw transmission assembly 13 and a driving motor 14 for driving the walking arm 15 to move along the sliding rail 12. The lead screw transmission assembly 13 comprises a ball screw arranged in parallel with the sliding rail 12 and a nut seat screwed on the ball screw. The nut seat is fixedly connected with the walking arm 15, and the output shaft of the driving motor 14 is drivingly connected with the end of the ball screw through a speed reducer. When the driving motor 14 is started, the rotation of the output shaft is transmitted to the ball screw to drive the ball screw to rotate. Since the nut seat is fixedly connected with the walking arm 15 and screwed on the ball screw, the nut seat drives the walking arm 15 to move horizontally and linearly along the sliding rail 12, thereby driving the safety buffer arranged on the walking arm 15 and the saw wheel 11 connected with the safety buffer to move, so as to realize the cutting feeding action of the saw wheel 11 on the mold steel.

[0035] Referring to Figures 5-8 The safety buffer comprises a buffer spring 22 and a horizontally arranged conductive shaft 24. The conductive shaft 24 comprises a cylindrical sliding portion 241 and integrally formed extension portions 242 and fixing portions 243 at both ends of the sliding portion 241, the axes of the extension portions 242 and the fixing portions 243 are collinear and the diameters of the extension portions 242 and the fixing portions 243 are smaller than that of the sliding portion 241. A driving sleeve 25 slidable along the axial direction is movably sleeved on the sliding portion 241. A sliding hole 252 coaxially communicated with the driving hole 251 is formed in the driving sleeve 25 in the axial direction, the diameter of the sliding hole 252 is smaller than that of the small-diameter end of the driving hole 251, and the driving sleeve 25 reciprocally slides on the sliding portion 241 through the sliding hole 252. An annular driving groove 253 is formed on the outer circumferential surface of the driving sleeve 25 in the radial direction, the driving sleeve portion 231 of the connecting piece 23 is clamped in the driving groove 253 and gap-fitted with the groove wall, and the saw wheel 11 is connected with the driving sleeve portion 231 through the connecting portion 232, so that the saw wheel 11 and the driving sleeve 25 keep synchronous movement. An axially movable movable sleeve 26 is sleeved outside the extension part 242. An axially through movable hole 262 is formed inside the movable sleeve 26, the diameter of the movable hole 262 is larger than the diameter of the extension part 242 and does not communicate with the accommodating groove 261, the movable sleeve 26 is sleeved outside the extension part 242 through the gap fit of the movable hole 262 and can slide axially along the extension part 242. The end face of the movable sleeve 26 away from the push sleeve 25 is axially recessed to form the accommodating groove 261, one end of the buffer spring 22 is embedded in the accommodating groove 261 and abuts against the groove bottom, and the other end is fixedly connected with the electrode block one 27. The fixed part 243 is fixedly provided with the electrode block two 21 opposite to the electrode block one 27 at the end away from the sliding part 241.

[0036] When the saw wheel 11 is vibrated during cutting, the vibration is transmitted to the push sleeve 25 through the connecting piece 23. The push sleeve 25 slides on the sliding part 241 to the direction of the movable sleeve 26, at this time the driving hole 251 can be coaxially sleeved outside the movable sleeve 26. Since at least two insulating balls 28 are arranged between the inner wall of the driving hole 251 and the chamfer 263 of the movable sleeve 26, during the movement of the push sleeve 25, the insulating balls 28 roll between the driving hole 251 and the chamfer 263 of the movable sleeve 26, converting the axial force of the push sleeve 25 into the axial thrust of the movable sleeve 26, so that the movable sleeve 26 moves along the extension part 242 to the direction of the fixed part 243, compressing the buffer spring 22. The buffer spring 22 absorbs the energy generated by the vibration of the saw wheel 11 through its elastic deformation, plays a role of buffering and shock absorption, and reduces the influence of vibration on other parts of the driving mechanism.

[0037] When the saw wheel 11 appears to be stuck, the huge impact force generated by the stuck instant on the saw wheel 11 can make the buffer spring 22 be sharply compressed to the limit position. At this time, the movable sleeve 26 moves to the position where the electrode block one 27 contacts the electrode block two 21, the electrode block one 27 contacts the electrode block two 21 and forms a conductive loop. The conductive loop can be connected with the control system of the equipment, when the control system detects that the conductive loop is formed, it is judged that the saw wheel 11 appears to be stuck, so as to reduce the speed of the driving motor 14 in time, avoiding more serious damage such as cracking of the saw wheel 11 caused by sticking. When the buffer spring 22 rebounds, the movement path of the insulating ball 28 is inclined movement under the shape constraint of the driving hole 251 and the chamfer 263, which forms resistance when the buffer spring 22 resets, so as to reduce the rebound speed of the buffer spring 22.

[0038] The pressing mechanism arranged below the crossbeam of the gantry 100 comprises a horizontally arranged pressing plate 16 and a vertically arranged pressing cylinder 18. The cylinder body of the pressing cylinder 18 is fixed on the gantry 100, and the piston rod end is fixedly connected with the upper surface of the pressing plate 16. The middle part of the pressing plate 16 is provided with a saw slot 171 for the saw wheel 11 to pass through. A plurality of rectangular pressing blocks 17 are uniformly arranged on the inner walls on both sides of the saw slot 171 along the length direction of the saw slot 171, and the bottom of the pressing block 17 is lower than the lower surface of the pressing plate 16. Before cutting operation, the pressing cylinder 18 is started, the piston rod thereof is extended, and the pressing plate 16 is moved downward. The pressing blocks 17 on the pressing plate 16 first contact the die steel cutting piece, and as the pressing plate 16 continues to descend, the pressing blocks 17 tightly press the die steel on the transmission roller shaft 10, so as to realize the pressing positioning of the die steel. In this way, during the cutting of the saw wheel 11, the die steel can be prevented from being displaced or jumping due to the cutting force, so as to ensure the cutting precision. During the cutting of the saw wheel 11, the saw wheel 11 moves along the length direction of the saw slot 171, and the length direction of the pressing block 17 is perpendicular to the feeding direction of the cutting piece, so as to better press and fix the die steel.

[0039] With reference to Figure 2 , the positioning mechanism is arranged on the rack 1 at both sides of the transmission roller shaft 10. The positioning mechanism comprises two groups of push-moving assemblies and pressing assemblies symmetrically arranged at both ends of the rack 1. The push-moving assembly comprises a horizontally arranged push block 34 cylinder 33 and a push block 34. The cylinder body of the push block 34 cylinder 33 is fixed on the side surface of the rack 1, and the piston rod end is fixedly connected with the push block 34. When the die steel cutting piece is placed, the push block 34 cylinder 33 is started, the piston rod thereof is extended, and the push block 34 is moved to the die steel direction. The two symmetrically arranged push blocks 34 push the die steel to the center position of the transmission roller shaft 10 from both sides, so as to realize the preliminary positioning of the die steel in the horizontal direction. The pressing assembly comprises a vertically arranged pressing cylinder 32 and a pressing block 31 arranged on the top of the push block 34. The cylinder body of the pressing cylinder 32 is fixedly connected with the push block 34, and the piston rod is fixedly connected with the upper surface of the pressing block 31. The lower surface of the pressing block 31 is correspondingly arranged with the top tangent line of the transmission roller shaft 10. When the die steel is positioned in the horizontal direction, the pressing cylinder 32 is started, the piston rod thereof is extended, and the pressing block 31 is moved downward, so as to press the die steel on the transmission roller shaft 10, further ensure the stability of the die steel during the cutting process, and prevent the die steel from being displaced in the vertical direction.

[0040] The implementation principle of the embodiment of the present application is that the rack 1 bears the die steel cutting piece through the transmission roller shaft 10 at the top, the tangent lines at the top of all the transmission roller shafts 10 are at the same horizontal plane, the stable placement of the cutting piece is ensured, the transmission roller shaft 10 starts to drive the cutting piece, and the cutting piece is transported to the cutting position. Subsequently, the pushing assembly is started, the push block 34 cylinder 33 drives the push block 34 to move to the die steel direction, and the two side push blocks 34 jointly push the cutting piece to the center position of the transmission roller shaft 10, and the horizontal direction preliminary positioning is completed. Subsequently, the pressing assembly is started, the pressing cylinder 32 at the top of the push block 34 drives the pressing block 31 to move downward, and the cutting piece is pressed on the transmission roller shaft 10, so as to prevent the vertical direction displacement and further fix the workpiece.

[0041] The pressing cylinder 18 on the portal frame 100 is started, the piston rod pushes the pressing plate 16 to move downward, the pressing blocks 17 on both sides of the saw groove 171 first contact the cutting piece, and the cutting piece is tightly pressed on the transmission roller shaft 10 as the pressing plate 16 continues to descend, so as to avoid displacement or jumping of the cutting piece due to stress during cutting. The cutting mechanism is started, the driving motor 14 of the cutting mechanism is started, the saw wheel 11 is driven to rotate at high speed through the shaft coupling, and the preparation for cutting operation is completed. The driving motor 14 of the driving mechanism is started, the ball screw is driven to rotate through the speed reducer, and the nut seat screwed on the screw rod drives the walking arm 15 to move horizontally along the slide rail 12. The walking arm 15 drives the safety buffer and the connected saw wheel 11 to move synchronously, the saw wheel 11 passes through the saw groove 171 of the pressing plate 16, feeds to the die steel direction, and starts the cutting operation.

[0042] During the cutting process, the vibration of the saw wheel 11 is transmitted to the shifting sleeve 25 through the connecting piece 23, so that the shifting sleeve 25 slides to the movable sleeve 26 along the sliding part 241 of the conductive shaft 24. The driving hole 251 of the shifting sleeve 25 is sleeved outside the movable sleeve 26, the insulating ball 28 rolls between the driving hole 251 and the chamfer 263 of the movable sleeve 26, converts the axial force into the pushing force of the movable sleeve 26, and moves the movable sleeve 26 along the extension part 242 to the fixed part 243 and compresses the buffer spring 22. The buffer spring 22 absorbs the vibration energy through elastic deformation, and reduces the influence on other parts of the driving mechanism.

[0043] If the saw wheel 11 is stuck, the instantaneous impact force makes the buffer spring 22 sharply compressed to the limit position, the movable sleeve 26 contacts the electrode block two 21 on the limiting table, the electrode block one 27 forms a conductive loop with the electrode block two 21 through the conductive shaft 24. After the equipment control system detects the loop, the rotating speed of the driving motor 14 is reduced in time, so as to avoid the saw wheel 11 from being broken due to continuous stress. After the stuck is removed, the buffer spring 22 rebounds, the insulating ball 28 moves along the inclined path under the constraint of the driving hole 251 and the chamfer 263, the spring rebound speed is reduced, and the secondary impact on the parts caused by the violent reset is avoided.

[0044] After the saw wheel 11 moves to the cutting end point along the slide rail 12, the driving mechanism reversely drives the saw wheel 11 to reset, the pressing and fixing mechanism and the positioning mechanism are sequentially loosened, the transmission roller shaft 10 rotates to send out the cut workpiece, and one cutting cycle is completed.

[0045] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A mold steel cutting device, characterized in that, Includes a frame (1), on which a gantry frame (100) is fixedly installed, and a cutting mechanism and a driving mechanism are arranged on the gantry frame (100) in the horizontal direction. The cutting mechanism includes a saw wheel (11) for performing cutting operations. The drive mechanism includes a slide rail (12) fixed to the top of the gantry (100) by bolts. A traveling arm (15) is slidably mounted on the slide rail (12) by a slider. A safety buffer is fixedly mounted on the end of the traveling arm (15) away from the slide rail (12). The safety buffer includes a buffer spring (22) and a horizontally arranged conductive shaft (24). The conductive shaft (24) includes a cylindrical sliding part (241) and an extension part (242) and a fixed part (243) integrally formed at both ends of the sliding part (241). The axes of the extension part (242) and the fixed part (243) are collinear and their diameters are smaller than those of the sliding part (241). A sliding sleeve (25) that can slide along its axial direction is movably sleeved on the sliding part (241). An axially movable sleeve (26) is movably sleeved outside the extension part (242). The saw wheel (11) moves synchronously with the sliding sleeve (25) through a connector (23). The actuating sleeve (25) has a horn-shaped drive hole (251) formed by an inward recess on one side end near the movable sleeve (26). The small diameter end of the drive hole (251) faces the sliding part (241), and the large diameter end faces the movable sleeve (26). The movable sleeve (26) has a chamfer (263) that matches the drive hole (251) on one side end near the actuating sleeve (25). When the actuating sleeve (25) slides along the sliding part (241) toward the movable sleeve (26), the drive hole (251) can be coaxially sleeved on the outside of the movable sleeve (26), and at least two insulating balls (28) are rolled between the inner wall of the drive hole (251) and the chamfer (263) of the movable sleeve (26). The end face of the movable sleeve (26) away from the actuating sleeve (25) is axially recessed to form a receiving groove (261). One end of the buffer spring (22) is embedded in the receiving groove (261) and abuts against the bottom of the groove. The other end is fixedly connected to an electrode block one (27). The end of the fixed part (243) away from the sliding part (241) is fixedly provided with an electrode block two (21) opposite to the electrode block one (27). When the movable sleeve (26) is compressed by axial force to the buffer spring (22) to the limit position, the electrode block one (27) and the electrode block two (21) contact each other and form a conductive circuit.

2. The mold steel cutting equipment according to claim 1, characterized in that, The movable sleeve (26) has a through movable hole (262) axially inside. The diameter of the movable hole (262) is larger than the diameter of the extension (242) and is not connected to the receiving groove (261). The movable sleeve (26) is fitted on the outside of the extension (242) through the movable hole (262) and can slide along the axial direction of the extension (242).

3. The mold steel cutting equipment according to claim 1, characterized in that, The actuating sleeve (25) has an axially arranged sliding hole (252) that is clearance-fitted with the sliding part (241). The sliding hole (252) is coaxially connected with the driving hole (251) and the diameter of the sliding hole (252) is smaller than the small diameter end diameter of the driving hole (251). The actuating sleeve (25) slides back and forth on the sliding part (241) through the sliding hole (252).

4. The mold steel cutting equipment according to claim 1, characterized in that, The outer circumferential surface of the actuating sleeve (25) is radially recessed to form an annular actuating groove (253). The connecting member (23) includes a connecting part (232) and an actuating sleeve part (231). The two forks of the actuating sleeve part (231) are symmetrically engaged in the actuating groove (253) and are in clearance fit with the groove wall. The saw wheel (11) is mounted on the end of the connecting part (232) through a bearing seat, and the central shaft of the saw wheel (11) is connected to the output shaft of the drive motor (14) through a coupling.

5. The mold steel cutting equipment according to claim 1, characterized in that, The drive mechanism also includes a screw drive assembly (13) and a drive motor (14) for driving the walking arm (15) to move along the slide rail (12). The screw drive assembly (13) includes a ball screw arranged parallel to the slide rail (12) and a nut seat screwed onto the screw. The nut seat is fixedly connected to the walking arm (15). The output shaft of the drive motor (14) is connected to the end of the ball screw through a reducer.

6. The mold steel cutting equipment according to claim 1, characterized in that, The top of the frame (1) is provided with multiple transmission rollers (10) spaced apart along the feed path of the cutting part. The two ends of the transmission rollers (10) are rotatably connected to the frame (1) through bearing seats, and the top tangents of all transmission rollers (10) are on the same horizontal plane.

7. The mold steel cutting equipment according to claim 1, characterized in that, A clamping mechanism is provided below the crossbeam of the gantry frame (100). The clamping mechanism includes a horizontally arranged clamping plate (16). A saw groove (171) is provided in the middle of the clamping plate (16) for the saw wheel (11) to pass through. The clamping mechanism also includes a vertically arranged clamping cylinder (18). The cylinder body of the clamping cylinder (18) is fixed on the gantry frame (100), and the end of the piston rod is fixedly connected to the upper surface of the clamping plate (16).

8. A mold steel cutting device according to claim 7, characterized in that, On the inner walls of both sides of the saw groove (171), a number of rectangular pressing blocks (17) are uniformly fixed along the length direction of the saw groove (171). The bottom of the pressing block (17) is lower than the lower surface of the pressing plate (16). The saw wheel (11) moves along the length direction of the saw groove (171). The length direction of the pressing block (17) is perpendicular to the feed direction of the cutting workpiece.

9. A mold steel cutting device according to claim 1, characterized in that, Positioning mechanisms are provided on both sides of the transmission roller shaft (10) on the frame (1). The positioning mechanisms include two sets of pushing components symmetrically arranged at both ends of the frame (1). The pushing components include a horizontally arranged push block cylinder (33) and a push block (34). The cylinder body of the push block cylinder (33) is fixed on the side of the frame (1), and the end of the piston rod is fixedly connected to the push block (34).

10. A mold steel cutting device according to claim 9, characterized in that, The positioning mechanism also includes a clamping assembly, which includes a clamping cylinder (32) and a clamping block (31) vertically disposed on the top of the push block (34). The cylinder body of the clamping cylinder (32) is fixedly connected to the push block (34), and the piston rod is fixedly connected to the upper surface of the clamping block (31). The lower surface of the clamping block (31) is correspondingly disposed to the top tangent of the transmission roller shaft (10).

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