Bar cutting device

Abstract

The invention discloses a bar cutting device, relates to the technical field of machining equipment, and aims to solve the problems of low bar cutting efficiency and poor size consistency in the prior art. The device comprises a supporting frame, and an equidistant cutting mechanism, an equidistant clamping mechanism and an auxiliary assembly are arranged on the supporting frame; the equidistant cutting mechanism comprises a cutting frame, a cam shaft and a spline shaft are rotationally arranged on the cutting frame, a spacing sliding block is slidably arranged on a guide shaft, a cam shaft spiral groove drives the spacing sliding block to slide equidistantly through a driven protrusion, the spline shaft is sleeved with a spline sleeve, and the spline sleeve is connected with a saw disc. The equidistant clamping mechanism comprises a clamping frame and is linked with a distance separation sliding block through a linkage rod, so that the clamping position corresponds to the cutting position; the auxiliary assembly comprises a material supporting frame, a bar detection assembly, a limiting assembly and a material receiving plate. The device can complete multi-section equal-distance cutting of the bars at a time, is high in cutting efficiency and good in size consistency, and meets the cutting requirements of the bars of different specifications.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, specifically to a bar cutting device. Background Technology

[0002] In machining, bar cutting is a crucial preliminary process that transforms long, thin metal bars (such as round and square steel) from raw materials into blanks or semi-finished products that meet the dimensional requirements of subsequent processes. Its core function is to cut the bar stock into specific lengths or pre-formed workpieces according to the machining needs of the parts. This provides a dimensionally suitable basic blank for subsequent precision machining processes such as turning, milling, and grinding, and can also directly complete the final cutting of some simple parts. Furthermore, by rationally cutting, it can reduce machining allowances in subsequent processes, improve overall production efficiency, and reduce material waste.

[0003] However, existing technologies still have significant shortcomings, such as: Single-blade cutting machines require segmented cutting, resulting in numerous cuts, long auxiliary time, and low processing efficiency, making it difficult to meet the needs of mass production. Although punching is efficient, the material is bent and deformed under stress during cutting, which can easily lead to a horseshoe-shaped shear surface that is not perpendicular to the bar. At the same time, the cross-section of the punched material has large burrs, making it difficult to guarantee the quality of the cut. For products with strict requirements on size and shape, ordinary punching methods are hard to meet the requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a bar cutting device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A bar cutting device includes a support frame, on which an equidistant cutting mechanism and an equidistant clamping mechanism are provided, wherein the equidistant cutting mechanism drives the equidistant clamping mechanism to move in sync. The equidistant cutting mechanism includes a cutting frame vertically slidably mounted on a support frame. A camshaft and a splined shaft are rotatably mounted on the cutting frame. Several guide shafts are fixedly mounted on the cutting frame, and a spacing slider is slidably mounted on each guide shaft. The camshaft has several helical grooves, the pitch of which increases from the midpoint towards both ends of the camshaft. Each spacing slider has a driven protrusion that mates with one of the helical grooves. The number of spacing sliders matches the number of helical grooves. A plurality of spline sleeves are slidably disposed on the spline shaft, and a rotating frame is fixedly disposed at one end of a plurality of the spacing sliders. The spline sleeves are rotatably disposed on the rotating frame, and a saw blade is fixedly disposed on the spline sleeves. The splined shaft and camshaft are driven by a first drive motor and a second drive motor, respectively.

[0006] Preferably, the equidistant clamping mechanism includes a plurality of clamping frames slidably disposed on a support frame, each clamping frame being provided with a fixed fixed clamping block and a sliding movable clamping block, and a clamping cylinder being fixedly disposed on the clamping frame, the movable end of the clamping cylinder being fixedly connected to the movable clamping block; A linkage rod is fixedly installed on several of the clamping frames, and a linkage sleeve is fixedly installed on the spacing slider. The linkage sleeve is slidably sleeved on the linkage rod.

[0007] Preferably, a lifting cylinder is fixedly installed on the support frame, and the movable end of the lifting cylinder is fixedly connected to the cutting frame, thereby driving the cutting frame to rise and fall through the lifting cylinder.

[0008] Preferably, both the first drive motor and the second drive motor are fixedly mounted on the cutting frame. The first drive motor drives the camshaft to rotate through the first pulley set, and the second drive motor drives the spline shaft to rotate through the second pulley set.

[0009] Preferably, a protective cover is fixedly installed on the rotating frame.

[0010] Preferably, a material support frame is fixedly provided on one side of the support frame.

[0011] Preferably, a bar detection component is provided on the side of the support frame near the material support frame. The bar detection component includes a support plate that is slidably disposed on the support frame. A proximity sensor and a locking cylinder are fixedly disposed on the support plate. An adjusting cylinder is fixedly disposed on the support frame, and the movable end of the adjusting cylinder is fixedly connected to the support plate.

[0012] Preferably, a limit component is slidably provided on the side of the support frame away from the material carrier. The limit component includes a sliding frame slidably disposed on the support frame, and a limit switch is fixedly disposed on the sliding frame. The sliding frame can be locked onto the support frame by bolts and nuts.

[0013] Preferably, a receiving plate is fixedly installed on the support frame, and the receiving plate has several through slots.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. Achieve simultaneous equidistant cutting of multiple saw segments, significantly improving cutting efficiency: By setting multiple saw discs and cooperating with the equidistant adjustment mechanism, the bar stock can be cut into multiple equidistant segments at one time. Compared with the traditional single saw blade segment-by-segment cutting method, it significantly reduces the number of cuttings and auxiliary time, greatly improving the overall efficiency of bar stock cutting, and is especially suitable for mass production scenarios.

[0015] 2. Precise and stable saw blade spacing adjustment ensures consistent cutting dimensions: By utilizing the gradually varying pitch spiral groove on the camshaft in conjunction with the spacing slider, the equidistant sliding of the spacing slider is achieved through a preset pitch ratio, thereby driving the saw blade to adjust at equal intervals. During the adjustment process, the spacing between each saw blade remains consistent. At the same time, the spacing slider and the clamping frame move synchronously through linkage components, ensuring that the clamping position corresponds precisely to the cutting position, effectively guaranteeing the dimensional consistency of each section of the cut material and improving product quality stability.

[0016] 3. High degree of automation and convenient operation: The device integrates functions such as feeding detection, automatic clamping, automatic spacing adjustment, automatic cutting, and material collection. The control system enables coordinated operation of all mechanisms, reducing manual intervention and lowering the labor intensity of operators. Simultaneously, operations such as saw blade spacing adjustment and feeding length adjustment are achieved through corresponding drive components, making the adjustment process simple and quick, adapting to the cutting needs of different specifications of bar stock. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the overall device of the present invention; Figure 2 This is a three-dimensional structural diagram of the equidistant cutting component of the present invention; Figure 3 This is a three-dimensional structural diagram of the equidistant cutting component of the present invention from another perspective; Figure 4 This is a schematic diagram of the three-dimensional structure of the camshaft of the present invention; Figure 5 This is a top view of the equidistant cutting component of the present invention; Figure 6 This is a three-dimensional structural diagram of the bar stock detection component of the present invention; Figure 7 This is a three-dimensional structural diagram of the limiting component of the present invention.

[0018] In the diagram: 1. Support frame; 2. Equidistant cutting mechanism; 21. Cutting frame; 22. Camshaft; 23. Splined shaft; 24. Guide shaft; 25. Split slider; 26. Spiral groove; 27. Driven protrusion; 28. Splined sleeve; 29. ​​Rotating frame; 210. Saw disc; 211. First drive motor; 212. Second drive motor; 213. First pulley group; 214. Second pulley group; 215. Protective cover; 3. Equidistant clamp. Holding mechanism; 31. Clamping frame; 32. Fixed clamping block; 33. Moving clamping block; 34. Clamping cylinder; 35. Linkage rod; 36. Linkage bushing; 4. Lifting cylinder; 5. Material support frame; 6. Bar material detection assembly; 61. Support plate; 62. Proximity sensor; 63. Locking cylinder; 64. Adjusting cylinder; 7. Limiting assembly; 71. Sliding frame; 72. Limit switch; 73. Bolt; 74. Nut; 8. Receiving plate; 81. Through groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-7 The present invention provides a technical solution: The support frame 1 serves as the basic load-bearing structure of the entire bar cutting device. Its top plane is used to install and support the equidistant cutting mechanism 2 and the equidistant clamping mechanism 3. The two are distributed along the length of the support frame 1 and are positioned correspondingly to ensure that the subsequent cutting and clamping actions can be applied to the same bar.

[0021] The equidistant cutting mechanism 2 is connected to the support frame 1 through a sliding guide structure, and can move along the support frame 1 in a preset direction; the equidistant clamping mechanism 3 is also set on the support frame 1 through another set of sliding structures, and the equidistant clamping mechanism 3 and the equidistant cutting mechanism 2 are connected through linkage components. Specifically, the spacing slider 25 in the equidistant cutting mechanism 2 and the clamping frame 31 in the equidistant clamping mechanism 3 are connected by a linkage sleeve 36 and a linkage rod 35, so that the two form a motion association.

[0022] When the equidistant cutting mechanism 2 needs to adjust the spacing of the saw disc 210 to adapt to the cutting requirements of bars of different lengths, the rotation of its internal camshaft 22 will drive the spacing slider 25 to slide. When the spacing slider 25 slides, it will push the linkage rod 35 through the linkage sleeve 36, thereby driving the clamping frame 31 of the equidistant clamping mechanism 3 to slide synchronously, realizing the synchronous linkage between the equidistant cutting mechanism 2 and the equidistant clamping mechanism 3. This linkage method can ensure that after the saw disc 210 moves, the clamping frame 31 always maintains a corresponding positional relationship with the saw disc 210, avoiding the inability to accurately cut the bar after clamping due to misalignment of the two, ensuring the coordination of cutting and clamping actions, and providing a foundation for subsequent stable cutting.

[0023] The equidistant cutting mechanism 2 uses the cutting frame 21 as its core mounting carrier. The cutting frame 21 is connected to the support frame 1 via a vertical guide structure, which restricts the cutting frame 21 to move only in the vertical direction, preventing lateral deviation. A lifting cylinder 4 is fixedly installed on the support frame 1 at a position away from the bottom of the cutting frame 21. The movable end of the lifting cylinder 4 is set vertically downward and fixedly connected to the top of the cutting frame 21. When the lifting cylinder 4 is activated, its movable end can drive the cutting frame 21 to move up and down along the vertical guide structure, thereby adjusting the distance between the saw disc 210 on the cutting frame 21 and the bar to be cut, realizing the adjustment of the cutting height. During cutting, the lifting cylinder 4 pushes the cutting frame 21 downward, so that the saw disc 210 contacts the bar. After cutting, the lifting cylinder 4 drives the cutting frame 21 upward to reset.

[0024] The cutting frame 21 is rotatably mounted with a camshaft 22 and a splined shaft 23 via bearings. The camshaft 22 and splined shaft 23 are distributed parallel to each other. The inner rings of the bearings are fixed to the camshaft 22 and splined shaft 23 respectively, and the outer rings are fixed to the cutting frame 21, ensuring that the camshaft 22 and splined shaft 23 can rotate stably around their own axes. Simultaneously, several guide shafts 24 are fixedly installed on the cutting frame 21 between the camshaft 22 and splined shaft 23. All guide shafts 24 are parallel to each other and parallel to the camshaft 22 and splined shaft 23. Spreading sliders 25 are slidably mounted on the guide shafts 24, and the spreading sliders 25 can slide freely along the axial direction of the guide shafts 24. The number of spreading sliders 25 is determined by the number of bars to be cut in a single operation, and must be exactly the same as the number of spiral grooves 26 opened on the outer circumference of the camshaft 22, ensuring that each spreading slider 25 corresponds to one spiral groove 26.

[0025] Several helical grooves 26 on the camshaft 22 are symmetrically distributed with the midpoint of the camshaft 22 as the center of symmetry. The pitch of each helical groove 26 gradually increases from the midpoint of the camshaft 22 towards both ends, and the pitch change pattern of the helical grooves 26 at symmetrical positions is exactly the same. The pitch slider 25 has an integrally formed or fixed driven protrusion 27 on the side facing the camshaft 22. The shape of the driven protrusion 27 is adapted to the groove shape of the helical groove 26 and is embedded in the interior of the helical groove 26 and fits tightly against the groove wall. When the camshaft 22 rotates under the driving action, the groove wall of the helical groove 26 will generate a thrust on the driven protrusion 27 along the axis of the guide shaft 24, thereby pushing the pitch slider 25 to slide along the guide shaft 24. Since the pitch of the helical grooves 26 at different positions is different, the pitch sliders 25 can be kept at equal intervals by preset pitch ratio.

[0026] It should be noted that the spiral groove 26 shown in this application is only schematic. Operators are fully capable of processing the corresponding spiral groove 26 based on calculations or experiments. At the same time, the spacing of the spiral groove 26 in this application is only schematic and the corresponding spacing of the spiral groove 26 can be set according to the actual situation.

[0027] The outer circumferential surface of the spline shaft 23 is provided with spline teeth, and several spline sleeves 28 are slidably sleeved on it. The inner hole of the spline sleeve 28 is provided with a spline groove that matches the spline teeth, ensuring that the spline sleeve 28 can slide along the axial direction of the spline shaft 23 and rotate synchronously with the spline shaft 23. The end of each pitch slider 25 away from the camshaft 22 is fixed to a rotating frame 29 by bolts 73 or welding. The rotating frame 29 has a "U" shaped structure, with its opening facing the spline shaft 23. The spline sleeve 28 is rotatably mounted inside the opening of the rotating frame 29 by bearings. The inner ring of the bearing is fixed to the spline sleeve 28, and the outer ring is fixed to the rotating frame 29, so that the spline sleeve 28 can rotate freely relative to the rotating frame 29. A saw disc 210 is fixedly installed at the center of the outer periphery of the spline sleeve 28. The axis of the saw disc 210 coincides with the axis of the spline sleeve 28. When the spline sleeve 28 rotates, it can drive the saw disc 210 to rotate synchronously, thereby cutting the bar material below. A protective cover 215 is also fixedly installed on the outside of the rotating frame 29. The protective cover 215 is arc-shaped and covers the outside of the saw disc 210, only exposing the cutting area of ​​the saw disc 210 facing the bar material. It can block the flying debris generated during the cutting process and protect the safety of the operator.

[0028] In addition, a first drive motor 211 and a second drive motor 212 are fixedly installed on one side of the cutting frame 21. The output shaft of the first drive motor 211 is connected to the camshaft 22 via a first pulley assembly 213. The first pulley assembly 213 includes two pulleys and a transmission belt. One pulley is fixed on the output shaft of the first drive motor 211, and the other pulley is fixed on one end of the camshaft 22. The transmission belt is sleeved on the outside of the two pulleys. Starting the first drive motor 211 will drive the camshaft 22 to rotate via belt transmission. The output shaft of the second drive motor 212 is connected to the splined shaft 23 via a second pulley assembly 214. The structure of the second pulley assembly 214 is the same as that of the first pulley assembly 213. One pulley is fixed on the output shaft of the second drive motor 212, and the other pulley is fixed on one end of the splined shaft 23. After the transmission belt is sleeved, power transmission can be realized. Starting the second drive motor 212 will drive the splined shaft 23 to rotate. Since the spline sleeve 28 and the spline shaft 23 are in sliding fit, even if the spacing slider 25 drives the rotating frame 29 and the spline sleeve 28 to slide and change position along the spline shaft 23, the spline shaft 23 can still drive the spline sleeve 28 and the saw disc 210 to rotate synchronously through the fit between the spline teeth and the spline groove, ensuring that the cutting action continues.

[0029] The equidistant clamping mechanism 3 uses several clamping frames 31 as its core working components. All clamping frames 31 are connected to the support frame 1 through a sliding structure. The support frame 1 has a slide rail along its length corresponding to the position of the clamping frame 31. The bottom of the clamping frame 31 has a slider that matches the slide rail, allowing the clamping frame 31 to slide smoothly along the length of the support frame 1. The number of clamping frames 31 is exactly the same as the number of spacing sliders 25 in the equidistant cutting mechanism 2, ensuring that there is a corresponding clamping frame 31 under each saw disc 210, realizing a "one saw disc 210, one clamping" matching relationship.

[0030] It should be noted that the relative movement between the sliding parts (such as the cutting frame 21, the linkage rod 35, etc.) can be made smoother by applying grease or setting sliding bearings, so as to ensure that the linkage between the sliding parts will not get stuck.

[0031] Each clamping frame 31 is equipped with a fixed clamping block 32 and a movable clamping block 33 on its top. The fixed clamping block 32 is directly fixed to the top surface of the clamping frame 31 by bolts 73, and its position remains unchanged. The movable clamping block 33 is slidably connected to the top surface of the clamping frame 31 by another set of short slide rails. The extension direction of the short slide rails is perpendicular to the length direction of the support frame 1, so that the movable clamping block 33 can only move in the direction of approaching or moving away from the fixed clamping block 32. A clamping cylinder 34 is fixedly installed on the side of the clamping frame 31 by angle brackets or brackets. The cylinder body of the clamping cylinder 34 is rigidly connected to the clamping frame 31, and its movable end is set along the extension direction of the short slide rails and is fixed to the side of the movable clamping block 33 by a connector. When the clamping cylinder 34 is ventilated and started, the movable end will push the moving clamping block 33 to move along the short slide rail toward the fixed clamping block 32 until the clamping surfaces of the moving clamping block 33 and the fixed clamping block 32 clamp the bar together; after the cutting is completed, the clamping cylinder 34 exhausts air, the movable end retracts, and the moving clamping block 33 moves away from the fixed clamping block 32, releasing the bar.

[0032] A linkage rod 35 is fixedly connected to the same side of all clamping frames 31 by welding or bolts 73, and the linkage rod 35 is perpendicular to all clamping frames 31. At the same time, each split slider 25 is fixed with a linkage sleeve 36 on the side facing the linkage rod 35 by bolts 73. The inner diameter of the linkage sleeve 36 is adapted to the outer diameter of the linkage rod 35, and it is fitted onto the linkage rod 35 in a clearance fit manner. The linkage sleeve 36 can slide freely along the length of the linkage rod 35, and can transmit thrust through the contact between the hole wall and the linkage rod 35.

[0033] When the equidistant cutting mechanism 2 needs to adjust the spacing of the saw blade 210, the spacing slider 25 slides along the guide shaft 24. At this time, the spacing slider 25 drives the linkage sleeve 36 to move synchronously. The linkage sleeve 36 applies a thrust along the length direction to the linkage rod 35 through the hole wall, thereby driving all the clamping frames 31 to slide synchronously along the slide rail of the support frame 1. This linkage method ensures that the movement distance and direction of the clamping frame 31, the spacing slider 25, and the saw blade 210 are completely consistent, so that the clamping frame 31 always maintains a corresponding position with the saw blade 210, avoiding misalignment between the bar stock and the saw blade 210 after clamping. In addition, the cooperation between the linkage rod 35 and the linkage sleeve 36 can also provide lateral support for the spacing slider 25, reduce the radial sway of the spacing slider 25 when sliding along the guide shaft 24, improve the stability of the entire mechanism's movement, and ensure accurate spacing adjustment.

[0034] A material support frame 5 is fixedly installed on one side of the support frame 1 by welding or bolts 73. The top surface of the material support frame 5 is flush with the clamping plane of the clamping frame 31 in the equidistant clamping mechanism 3. When the length of the bar material to be cut is long, the material support frame 5 can provide support from below the middle or end of the bar material to prevent the bar material from sagging due to its own weight, prevent the bar material from bending or shifting position during feeding, and ensure that the bar material can be smoothly conveyed to the clamping position along the preset direction.

[0035] A bar detection assembly 6 is provided on the side of the support frame 1 near the material support frame 5. The core component of this assembly is a support plate 61, which is slidably connected to the support frame 1 via a slide rail extending along the length of the support frame 1, allowing the support plate 61 to move freely along the slide rail. A proximity sensor 62 and a locking cylinder 63 are fixedly mounted on the top surface of the support plate 61 by bolts 73. The detection end of the proximity sensor 62 faces the bar feeding direction and is used to detect in real time whether a bar has been fed to the preset clamping position. The movable end of the locking cylinder 63 is arranged perpendicular to the bar feeding direction, and its end can contact the side of the bar.

[0036] An adjusting cylinder 64 is fixedly installed on the support frame 1 at the position corresponding to the pallet 61. The cylinder body of the adjusting cylinder 64 is rigidly connected to the support frame 1, and its movable end is set along the extension direction of the slide rail and fixed to the side of the pallet 61 through a connector. When it is necessary to adapt to bars of different diameters or different feeding positions, the adjusting cylinder 64 is activated, and its movable end can push the pallet 61 to move along the slide rail, thereby driving the proximity sensor 62 and the locking cylinder 63 to adjust their positions synchronously, ensuring that the proximity sensor 62 can accurately detect the bar and the locking cylinder 63 can accurately act on the bar. When the proximity sensor 62 detects that the bar is in place, it will send a signal to trigger the locking cylinder 63. The movable end of the locking cylinder 63 extends and presses against the side of the bar, temporarily locking the bar in the current position to prevent the bar from shifting before subsequent feeding or clamping, thus ensuring accurate clamping later.

[0037] A limit component 7 is slidably mounted on the side of the support frame 1 away from the material carrier 5 via a slide rail. This component includes a sliding frame 71, the bottom of which is adapted to the slide rail and can move along the length of the support frame 1 to adjust the limit position. A limit switch 72 is fixedly mounted on the top surface of the sliding frame 71 via a bracket. The trigger end of the limit switch 72 faces the bar feeding direction and corresponds to the bar conveying path. When the bar moves towards the clamping position under the drive of the feeding mechanism, its end gradually approaches the limit switch 72. When the end of the bar touches the trigger end of the limit switch 72, the limit switch 72 sends a signal to the control system to stop the operation of the feeding mechanism, thereby limiting the feeding length of the bar and ensuring that the feeding length is consistent each time.

[0038] The sliding frame 71 has elongated holes on its side, distributed along the extension direction of the slide rail. Bolts 73 pass through the elongated holes and are threaded into the threaded holes on the support frame 1. Nuts 74 are fitted over the bolts 73 and fit against the side of the sliding frame 71. When it is necessary to adjust the feeding length of the bar stock, loosen the nut 74 to release the lock of the nut 74 on the sliding frame 71, push the sliding frame 71 to move along the slide rail to the target position, and then tighten the nut 74. The friction between the nut 74 and the side of the sliding frame 71 fixes the sliding frame 71 to the support frame 1, preventing the sliding frame 71 from moving due to vibration or external force during the operation of the device, and ensuring the limit accuracy.

[0039] At the bottom of the support frame 1, directly below the saw disc 210 in the equidistant cutting mechanism 2, a receiving plate 8 is fixedly installed via a bracket. The receiving plate 8 is horizontally distributed, and its top surface maintains a preset distance from the cutting plane of the saw disc 210. Several through slots 81 are formed along the length of the receiving plate 8. The width of the through slots 81 is greater than the size of the debris generated during the cutting process, but smaller than the minimum diameter of the cut bar. After the bar is cut, the movable end of the clamping cylinder 34 in the equidistant clamping mechanism 3 retracts, causing the moving clamping block 33 to move away from the fixed clamping block 32, releasing the bar. The bar falls onto the top surface of the receiving plate 8 under gravity. Simultaneously, the debris generated during cutting leaks through the through slots 81 on the receiving plate 8 and falls into a preset debris collection device below, achieving automatic separation of the cut bar and debris, reducing the workload of subsequent manual sorting and cleaning.

[0040] Working Principle: In the process of using this invention, when specifically using the bar cutting device, the feeding process is first initiated: the operator can manually push or start the automatic feeding mechanism to convey the bar raw material along the top surface of the support frame 5. The support frame 5 provides support from below the bar to prevent it from sagging or shifting. The bar moves along the preset conveying path towards the clamping frame 31 of the equidistant clamping mechanism 3 until the end of the bar touches the limit switch 72 on the limit component 7. After the limit switch 72 is triggered, it immediately sends a signal to the control system, and the feeding mechanism stops running, ensuring that the bar conveying length conforms to the initial setting.

[0041] At this time, the bar detection component 6 starts working: the proximity sensor 62 installed on the pallet 61 will detect whether there is a bar in place on the current conveying path. If the proximity sensor 62 detects the presence of the bar, it will send a signal to the control system, and the control system will then control the locking cylinder 63 to start. The movable end of the locking cylinder 63 extends and presses against the side of the bar, temporarily locking the bar in the current position to prevent the bar from shifting before subsequent clamping actions. At the same time, the clamping cylinder 34 in the equidistant clamping mechanism 3 is activated by air, and its movable end pushes the moving clamping block 33 to move along the short slide rail towards the fixed clamping block 32 until the clamping surfaces of the moving clamping block 33 and the fixed clamping block 32 clamp the bar together, completing the positioning and fixing of the bar.

[0042] If the spacing between saw blades 210 needs to be adjusted according to the target cutting length of the bar stock, the spacing adjustment process needs to be initiated: Start the second drive motor 212. The output shaft of the second drive motor 212 drives the camshaft 22 to rotate through the first pulley group 213. The two pulleys of the first pulley group 213 are fixed to the output shaft of the second drive motor 212 and the end of the camshaft 22, respectively. Power transmission is achieved after the transmission belt is sleeved. When the camshaft 22 rotates, the spiral groove 26 on its outer circumference generates a thrust on the driven protrusion 27 on the spacing slider 25 through the groove wall, pushing the spacing slider 25 to slide along the guide shaft 24. Since the pitch of the spiral groove 26 increases at a preset ratio from the midpoint of the camshaft 22 to both ends, the spacing slider 25 will maintain an equidistant spacing during the sliding process, thereby driving the rotating frame 29, spline sleeve 28, and saw blade 210 fixed to the spacing slider 25 to slide synchronously and equidistantly. At the same time, when the sliding block 25 slides, it will drive the linkage sleeve 36 to move along the linkage rod 35. The linkage sleeve 36 drives the linkage rod 35 and all the clamping frames 31 to slide synchronously along the slide rail of the support frame 1 through the thrust of the hole wall, ensuring that the position of the clamping frame 31 and the saw disc 210 always corresponds one-to-one, avoiding misalignment of clamping and cutting during subsequent cutting.

[0043] After the spacing is adjusted, the cutting process begins: the first drive motor 211 is started, and the output shaft of the first drive motor 211 drives the spline shaft 23 to rotate through the second pulley group 214. The transmission method of the second pulley group 214 is the same as that of the first pulley group 213, so as to achieve stable rotation of the spline shaft 23. When the spline shaft 23 rotates, the spline teeth and the spline groove of the spline sleeve 28 drive the spline sleeve 28 and the saw disc 210 fixed on the spline sleeve 28 to rotate at high speed. At the same time, the lifting cylinder 4 is started. The movable end of the lifting cylinder 4 pushes the cutting frame 21 to move downward along the vertical guide structure, which drives the high-speed rotating saw disc 210 to move downward synchronously. The saw disc 210 gradually contacts the bar material and cuts it at equal intervals.

[0044] After cutting, the process enters the reset and material collection phase: the movable end of the lifting cylinder 4 retracts, driving the cutting frame 21 and saw disc 210 upwards to their initial positions; the clamping cylinder 34 in the equidistant clamping mechanism 3 exhausts air, its movable end retracts, and it moves the moving clamping block 33 away from the fixed clamping block 32, releasing the cut bar stock. Under the influence of gravity, the bar stock falls from between the clamping frames 31 and finally lands on the receiving plate 8 at the bottom of the support frame 1; the debris generated during the cutting process leaks through the through groove 81 on the receiving plate 8 and falls into the preset debris collection device, achieving separation of the bar stock and debris. Thus, a complete bar stock cutting cycle is completed, and the next feeding process can be started for continuous cutting.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bar cutting device, comprising a support frame (1), characterized in that: The support frame (1) is provided with an equidistant cutting mechanism (2) and an equidistant clamping mechanism (3), and the equidistant cutting mechanism (2) drives the equidistant clamping mechanism (3) to move in sync. The equidistant cutting mechanism (2) includes a cutting frame (21) vertically slidably mounted on a support frame (1). A camshaft (22) and a spline shaft (23) are rotatably mounted on the cutting frame (21). Several guide shafts (24) are fixedly mounted on the cutting frame (21). A spacing slider (25) is slidably mounted on the guide shaft (24). Several helical grooves (26) are formed on the camshaft (22). The pitch of the helical grooves (26) increases from the midpoint of the camshaft (22) to both ends. A driven protrusion (27) that cooperates with the helical grooves (26) is fixedly mounted on the spacing slider (25). The number of spacing sliders (25) matches the number of helical grooves (26). A plurality of spline sleeves (28) are slidably arranged on the spline shaft (23), and a rotating frame (29) is fixedly arranged at one end of a plurality of the spacing sliders (25). The spline sleeves (28) are rotatably arranged on the rotating frame (29), and a saw blade (210) is fixedly arranged on the spline sleeves (28). The spline shaft (23) and camshaft (22) are driven by the first drive motor (211) and the second drive motor (212), respectively.

2. The bar cutting device according to claim 1, characterized in that: The equidistant clamping mechanism (3) includes a plurality of clamping frames (31) slidably disposed on the support frame (1). The clamping frame (31) is provided with a fixed fixed clamping block (32) and a sliding movable clamping block (33). The clamping frame (31) is fixedly provided with a clamping cylinder (34). The movable end of the clamping cylinder (34) is fixedly connected to the movable clamping block (33). A linkage rod (35) is fixedly provided on several of the clamping frames (31), and a linkage sleeve (36) is fixedly provided on the spacing slider (25). The linkage sleeve (36) is slidably sleeved on the linkage rod (35).

3. The bar cutting device according to claim 2, characterized in that: A lifting cylinder (4) is fixedly installed on the support frame (1). The movable end of the lifting cylinder (4) is fixedly connected to the cutting frame (21). The lifting cylinder (4) drives the cutting frame (21) to rise and fall.

4. The bar cutting device according to claim 3, characterized in that: The first drive motor (211) and the second drive motor (212) are both fixedly mounted on the cutting frame (21). The first drive motor (211) drives the camshaft (22) to rotate through the first pulley group (213), and the second drive motor (212) drives the spline shaft (23) to rotate through the second pulley group (214).

5. The bar cutting device according to claim 1, characterized in that: A protective cover (215) is fixedly installed on the rotating frame (29).

6. The bar cutting device according to claim 2, characterized in that: A material support frame (5) is fixedly installed on one side of the support frame (1).

7. A bar cutting device according to claim 6, characterized in that: The support frame (1) is provided with a bar material detection component (6) on the side near the material support frame (5). The bar material detection component (6) includes a support plate (61) slidably disposed on the support frame (1). A proximity sensor (62) and a locking cylinder (63) are fixedly disposed on the support plate (61). An adjusting cylinder (64) is fixedly disposed on the support frame (1). The movable end of the adjusting cylinder (64) is fixedly connected to the support plate (61).

8. A bar cutting device according to claim 6, characterized in that: A limit component (7) is slidably provided on the side of the support frame (1) away from the material support frame (5). The limit component (7) includes a sliding frame (71) slidably provided on the support frame (1). A limit switch (72) is fixedly provided on the sliding frame (71). The sliding frame (71) can be locked on the support frame (1) by bolts (73) and nuts (74).

9. A bar cutting device according to claim 1, characterized in that: A receiving plate (8) is fixedly installed on the support frame (1), and several through slots (81) are opened on the receiving plate (8).

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