A high-efficiency metal cutting band saw

Abstract

The present invention relates to the technical field of band sawing machines, and discloses an efficient metal cutting band sawing machine, comprising a band sawing machine main body, a feeding roller frame is installed on one side of the band sawing machine main body, and a material unloading unit is installed on the other side of the band sawing machine, wherein the material unloading unit comprises a frame, a first slide rail and a second slide rail, a plurality of shafts are rotatably connected in the frame, shaft rollers are fixedly connected to the outer walls of the shafts, and two groups of connecting pieces are fixedly connected to the bottom surfaces of both sides of the frame; the present invention supports the cutting section of the metal pipe workpiece by the shaft rollers on the frame, and the frame moves after the cutting is completed, driving the cut workpiece to leave the band sawing machine main body, and when the frame leaves the sawing machine main body, the frame tilts, so that the cut workpiece slides off the shaft rollers on the frame, and automatic unloading is realized, and workers do not need to run on both sides of the band sawing machine main body, but only need to control the cutting and feeding, so as to facilitate the cutting of the metal tubular workpiece, improve the work efficiency, and reduce the labor.

Description

Technical Field

[0001] The invention relates to the technical field of band saw machines, in particular to a high-efficiency metal cutting band saw machine. Background Art

[0002] Metal cutting band saw is a machine tool used to cut metal materials. It is widely used in cutting of materials such as steel, steel pipes, and plates. The main components of metal cutting band saw include base, bed, column, saw beam and transmission mechanism, guide device, workpiece clamping device, tensioning device, feed rack, hydraulic transmission system, electrical control system, saw blade, etc. Its working principle is that the motor drives the spindle to rotate through the V-belt to move the saw blade to cut the metal parts.

[0003] The loading and unloading points of the band saw are located on both sides of the bed. When cutting metal pipes, workers insert the metal pipe from one end of the band saw, cut the metal pipe, and then remove the cut metal pipe from the other end of the band saw. However, this unloading method requires workers to repeatedly go back and forth between the two ends of the bed to load and unload the workpiece, which increases the workload, is time-consuming and labor-intensive, and reduces work efficiency. Therefore, an efficient metal cutting band saw is proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a high-efficiency metal cutting band saw, which improves the cutting efficiency of the band saw on workpieces and reduces the workload of staff.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an efficient metal cutting band saw machine, comprising a band saw machine body, a feeding roller frame is installed on one side of the band saw machine body, a material unloading unit is installed on the other side of the band saw machine body, the material unloading unit comprises a frame, a first slide rail and a second slide rail, a plurality of shafts are rotatably connected in the frame, shaft rollers are fixedly connected to the outer walls of the shafts, two groups of connecting members are fixedly connected to the bottom surfaces of both sides of the frame, a first support rod and a second support rod are rotatably connected in the two groups of connecting members on both sides of the frame, universal wheels are installed at the lower ends of the first support rod and the second support rod, and the universal wheels located on both sides of the bottom of the frame are slidably connected to the first slide rail and the second slide rail. The first support rod has a first sliding opening, and the second sliding rail is provided with a universal wheel at the lower end of the first support rod, and the universal wheel at the lower end of the second support rod slides with the inner wall of the second sliding rail. Two inclined grooves are provided in the second sliding rail, and the inner wall width of the second sliding rail is greater than the wheel thickness of the universal wheel. A first sliding opening is provided on the side wall of the second support rod, and a sliding rod slidably connected to the first sliding opening is fixedly connected to the side wall of the first support rod. A cylinder is installed on the side wall of the band saw machine body, and the output end of the cylinder is fixedly connected to the side wall of one of the adjacent sliding rods. A lifting unit for lifting a workpiece is installed between the frame and the band saw machine body, and a positioning unit for positioning the workpiece is installed on the frame.

[0006] Preferably, the unloading unit also includes a second sliding opening opened on the outer wall of the sliding rod and a third sliding opening opened on the outer wall of the second support rod. The third sliding opening is perpendicular to and connected to the first sliding opening. A limiting rod is slidably connected inside the third sliding opening, and the limiting rod is slidably connected to the second sliding opening.

[0007] Preferably, the lifting unit includes two positioning plates and two sliding grooves opened on the side walls of the frame, a rectangular rod is slidably connected in the sliding groove, a lifting block is fixedly connected to the outer wall of the rectangular rod, the lifting block is located in the frame, and round blocks are fixedly connected at both ends of the rectangular rod. The two positioning plates are respectively located on both sides of the frame and fixed on the upper surface of the band saw body, a bending opening is opened on one side of the positioning plate, and the round block is slidably connected to the bending opening.

[0008] Preferably, a locking unit for locking the shaft rod is installed between the side walls of the frame and the positioning plate, the locking unit includes multiple rotating shafts rotatably connected to the side walls of the frame, the outer walls of the rotating shafts are fixedly connected to transmission arms, one ends of the multiple transmission arms are commonly rotatably connected to a driving rod, the side walls at both ends of the transmission arms are rotatably connected to connecting strips, a transmission frame is rotatably connected between two connecting strips located at the same end, the upper ends of the two transmission frames are rotatably connected, the rotation points of the upper ends of the two transmission frames are rotatably connected to the side walls of the frame, the inner walls of the two transmission frames are fixedly connected to damping blocks corresponding to the shaft rod, the lifting unit also includes a bending groove opened on the side wall of the positioning plate, and the side wall at one end of the driving rod is fixedly connected to a slider slidably connected to the bending groove.

[0009] Preferably, the lifting unit also includes a return groove opened on the side wall of the positioning plate, the return groove is connected to the bending groove, the slider is slidably connected to the return groove, a give way groove is opened at the connection between the return groove and the bending groove, a rotating rod is fixedly connected in the give way groove, the outer wall of the rotating rod is rotatably connected to a guide block, the guide block corresponds to the inclined surface of the bending groove, and the outer wall of the rotating rod is sleeved with a torsion spring for applying torsion to the guide block.

[0010] Preferably, there are two locking units, which are respectively located on two sides of the frame.

[0011] Preferably, the positioning unit includes a fixed plate installed on the upper surface of the frame, one side of the fixed plate is threadedly connected to a threaded rod, one end of the threaded rod is rotatably connected to a baffle, one side of the baffle is symmetrically fixedly connected to a positioning rod, and one end of the positioning rod passes through the fixed plate and is slidably connected to it.

[0012] Preferably, two rows of threaded holes are provided on the upper surface of the frame, the two rows of threaded holes are alternately distributed with multiple shaft rods, the fixing plate is installed on the frame by bolts matching the threaded holes, and the length of the threaded rod is greater than the spacing between two adjacent threaded holes on the same side.

[0013] Preferably, a liquid receiving box is installed on the bottom surface of the frame. The liquid receiving box has a bucket-shaped structure, and the inner bottom surface of one end of the liquid receiving box close to the band saw machine body is higher than the inner bottom surface of the other end. The end of the liquid receiving box away from the band saw machine body is connected to a drain pipe.

[0014] Preferably, the unloading unit further comprises a fixing rod, which is fixedly connected between the first slide rail and the second slide rail.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention supports the cutting section of the metal pipe workpiece by the shaft rollers on the frame. After the cutting is completed, the frame moves to drive the cut workpiece to leave the band saw machine body, and when the frame leaves the saw machine body, the frame tilts, so that the cut workpiece slides off the shaft rollers on the frame, realizing automatic unloading. The workers do not need to run on both sides of the band saw machine body, but only need to control the cutting and loading, which makes it convenient to cut the metal tubular workpiece, improves work efficiency and reduces labor.

[0017] The present invention is provided with a lifting unit. When the frame moves outward, the lifting block in the lifting unit moves upward to lift one end of the cut workpiece, thereby restricting the workpiece so that it does not slide back and forth, thereby ensuring that the workpiece is taken away from the band saw machine body for unloading, thereby improving practicality.

[0018] The present invention provides a locking unit, and when the frame moves outward, the locking unit locks the shaft rod so that the shaft roller cannot rotate, thereby increasing the restriction on the workpiece and maintaining the stability of the frame when driving the workpiece to move.

[0019] The present invention installs a positioning unit on the frame, and the position of the positioning unit is adjustable, so that the cutting section of the metal tubular workpiece is conveniently positioned. When cutting batches of workpieces, repeated measurements are unnecessary, so that the workpieces can be quickly cut.

[0020] The present invention installs a liquid collecting box in the frame. When the lifting block lifts one end of the metal tubular workpiece, the workpiece is inclined. At this time, the cutting fluid remaining in the workpiece during cutting can flow into the liquid collecting box for collection, thereby avoiding contamination of the ground.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2It is a schematic diagram of the position structure of the blanking unit and the band saw machine body of the present invention;

[0024] Figure 3 It is a detailed structural schematic diagram of the blanking unit of the present invention;

[0025] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0026] Figure 5 It is a schematic diagram of the coordination structure of the blanking unit, the locking unit and the lifting unit of the present invention;

[0027] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0028] Figure 7 It is a schematic diagram of the position structure of the lifting block of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the upper surface of the frame of the present invention;

[0030] Fig. 9 It is a schematic diagram of the matching structure of the slider and the positioning plate of the present invention;

[0031] Fig.10 for Fig. 9 A partial enlarged view of point C in the middle;

[0032] Fig.11 It is a structural schematic diagram of the positioning unit of the present invention;

[0033] Fig.12 It is a schematic diagram of the internal structure of the first slide rail and the second slide rail of the present invention.

[0034] In the figure: 1, band saw machine body; 2, feed roller frame; 3, unloading unit; 31, frame; 32, shaft rod; 33, shaft roller; 34, connecting piece; 35, first support rod; 36, second support rod; 37, universal wheel; 38, first slide rail; 39, second slide rail; 310, cylinder; 311, slide rod; 312, first slide; 313, second slide; 314, third slide; 315, limit rod; 316, fixed rod; 317, inclined groove; 4, lifting unit; 41, positioning plate; 42, bending mouth; 4 3. Bending groove; 44. Lifting block; 45. Round block; 46. Give way groove; 47. Turn rod; 48. Guide block; 49. Torsion spring; 410. Return groove; 411. Slide groove; 412. Rectangular rod; 5. Locking unit; 51. Transmission frame; 52. Damping block; 53. Connecting strip; 54. Transmission arm; 55. Driving rod; 56. Slider; 57. Rotating shaft; 6. Positioning unit; 61. Fixed plate; 62. Positioning rod; 63. Baffle; 64. Threaded rod; 7. Threaded hole; 8. Liquid collecting box; 9. Drain pipe. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 12 A high-efficiency metal cutting band saw machine of the present embodiment comprises a band saw machine body 1, a feeding roller frame 2 is installed on one side of the band saw machine body 1, a material unloading unit 3 is installed on the other side of the band saw machine body 1, the material unloading unit 3 comprises a frame 31, a first slide rail 38 and a second slide rail 39, a plurality of shafts 32 are rotatably connected in the frame 31, shaft rollers 33 are fixedly connected to the outer wall of the shafts 32, two groups of connecting members 34 are fixedly connected to the bottom surfaces of both sides of the frame 31, a first support rod 35 and a second support rod 36 are rotatably connected in the two groups of connecting members 34 on both sides of the frame 31, universal wheels 37 are installed at the lower ends of the first support rod 35 and the second support rod 36, the universal wheels 37 located on both sides of the bottom of the frame 31 are slidably connected to the first slide rail 38 and the second slide rail 39, the first The universal wheel 37 at the lower end of the support rod 35 slides with the inner wall of the first slide rail 38, and the universal wheel 37 at the lower end of the second support rod 36 slides with the inner wall of the second slide rail 39. Two inclined grooves 317 are provided in the second slide rail 39. The inner wall width of the second slide rail 39 is greater than the wheel thickness of the universal wheel 37. The side wall of the second support rod 36 is provided with a first sliding opening 312. The side wall of the first support rod 35 is fixedly connected with a sliding rod 311 slidably connected to the first sliding opening 312. A cylinder 310 is installed on the side wall of the band saw machine body 1. The output end of the cylinder 310 is fixedly connected to the side wall of one of the adjacent sliding rods 311. A lifting unit 4 for lifting a workpiece is installed between the frame 31 and the band saw machine body 1. A positioning unit 6 for positioning the workpiece is installed on the frame 31.

[0037] Specifically, the band saw structure of the present invention is similar to the existing band saw structure. The main improvement of the present invention is to improve the cutting efficiency of the band saw on the workpiece and reduce the labor of the staff. When the metal tubular workpiece needs to be cut, the workpiece is placed on the feed roller frame 2, and the workpiece slides on the feed roller frame 2, so that one end of the workpiece passes through the band saw body 1, so that the cutting part of the workpiece is moved to the shaft roller 33, and the shaft rod 32 supports the shaft roller 33. The band saw body 1 is used to clamp and cut the workpiece. After cutting, the cut part of the workpiece is supported by the shaft roller 33. At this time, the cylinder 310 is started to work, and the air cylinder 310 is started to work. The cylinder 310 drives the first support rod 35 and the second support rod 36 to move through the slide rod 311. The first support rod 35 drives the universal wheel 37 at the lower end thereof to slide in the first slide rail 38. The inner wall width of the first slide rail 38 is equal to the wheel thickness of the universal wheel 37. The first slide rail 38 restricts the left and right movement of the universal wheel 37, so that the universal wheel 37 can only move along the first slide rail 38. The universal wheel 37 at the lower end of the second support rod 36 slides in the second slide rail 39. The first slide rail 38 and the second slide rail 39 are both fixed to the ground. The first support rod 35 and the second support rod 36 drive the frame 31 to move through the connecting member 34. The frame 31 is The shaft roller 33 drives the cut workpiece to move, so that the workpiece and the frame 31 are moved out of the band saw machine body 1, and the slide bar 311 restricts the second support rod 36 through the first slide 312, so that the second support rod 36 will not rotate left and right significantly, until the universal wheel 37 at the lower end of the second support rod 36 slides into the inclined groove 317 and drives the second support rod 36 to descend. At this time, the frame 31 is tilted, the second support rod 36 and the frame 31 rotate, and the second support rod 36 drives the universal wheel 37 to slide horizontally in the second slide rail 39. The second support rod 36 moves horizontally, so that the first slide 312 on the second support rod 36 slides on the outer wall of the slide bar 311, and the frame The frame 31 is rotatably connected to the first support rod 35 and the second support rod 36 through the connecting piece 34. When the universal wheel 37 at the lower end of the second support rod 36 slides into the inclined groove 317, one side of the frame 31 is inclined, so that the workpiece slides off the shaft roller 33 to achieve unloading. Then the cylinder 310 drives the frame 31 to move back, and the universal wheel 37 at the lower end of the second support rod 36 slides out of the inclined groove 317, so that the frame 31 is horizontal and the workpiece can be cut again to achieve automatic unloading. Workers do not need to run on both sides of the band saw machine body 1, but only need to control the cutting and loading, which is convenient for cutting metal tubular workpieces, improves work efficiency and reduces labor.

[0038] Among them, the cylinder 310 mentioned above can be purchased on the market. It is a mature technology and has been fully disclosed, so it is not repeated in the specification. The cylinder 310 is equipped with a power connection line.

[0039] Specifically, the unloading unit 3 also includes a second sliding opening 313 opened on the outer wall of the sliding rod 311 and a third sliding opening 314 opened on the outer wall of the second support rod 36, the third sliding opening 314 is perpendicular to and connected to the first sliding opening 312, a limiting rod 315 is slidably connected in the third sliding opening 314, and the limiting rod 315 is slidably connected to the third sliding opening 314 and the second sliding opening 313; when the universal wheel 37 at the lower end of the second support rod 36 slides into the inclined groove 317, the universal wheel 37 drives the second support rod 36 to move horizontally and descend, and the limiting rod 315 on the second support rod 36 slides in the second sliding opening 313 and the third sliding opening 314, and the second sliding opening 313 and the third sliding opening 314 cooperate with the limiting rod 315 to limit the second support rod 36, so that the second support rod 36 remains vertical and does not tilt, thereby maintaining stability when the frame 31 is tilted.

[0040] Specifically, the lifting unit 4 includes two positioning plates 41 and two slide grooves 411 provided on the side walls of the frame 31, a rectangular rod 412 is slidably connected in the slide groove 411, a lifting block 44 is fixedly connected to the outer wall of the rectangular rod 412, the lifting block 44 is located in the frame 31, and round blocks 45 are fixedly connected at both ends of the rectangular rod 412. The two positioning plates 41 are respectively located on both sides of the frame 31 and fixed to the upper surface of the band saw machine body 1. A bending opening 42 is provided on one side of the positioning plate 41, and the round block 45 is slidably connected to the bending opening 42; when the frame 31 moves outward, the round block 45 is driven to slide in the bending opening 42 on the positioning plate 41, and the positioning plate 41 is fixed on the band saw machine body 1, and the movement of the frame 31 will drive the round block 45 The moving round block 45 is guided up by the bending mouth 42, so that the round block 45 drives the rectangular rod 412 to rise in the slide groove 411, and the rectangular rod 412 drives the lifting block 44 to rise, so that the lifting block 44 lifts one end of the cut workpiece, and the upper surface of the lifting block 44 is concave. The lifting block 44 is used to increase the friction force on the round workpiece (such as a metal pipe), so that the shaft roller 33 will not cause the workpiece to shift when the frame 31 moves, until the round block 45 slides out of the bending mouth 42. At this time, the frame 31 is tilted to unload the workpiece. The outer end of the bending mouth 42 is a chamfered structure. When the frame 31 moves back, the chamfered structure is used to make the round block 45 slide back into the bending mouth 42, thereby improving the stability of unloading the workpiece.

[0041] Specifically, a locking unit 5 for locking the shaft 32 is installed between the frame 31 and the side wall of the positioning plate 41, and the locking unit 5 includes a plurality of rotating shafts 57 rotatably connected to the side wall of the frame 31, and the outer wall of the rotating shaft 57 is fixedly connected to a transmission arm 54, and one end of the plurality of transmission arms 54 is rotatably connected to the same driving rod 55, and the side walls at both ends of the transmission arms 54 are rotatably connected to connecting strips 53, and a transmission frame 51 is rotatably connected between two connecting strips 53 located at the same end, and the upper ends of the two transmission frames 51 are rotatably connected, and the rotation points at the upper ends of the two transmission frames 51 are rotatably connected to the side wall of the frame 31, and the inner walls of the two transmission frames 51 are fixedly connected to damping blocks 52 corresponding to the shaft 32, and the lifting unit 4 also includes a bending groove 43 provided on the side wall of the positioning plate 41, and one end of the driving rod 55 is fixedly connected to a side wall slidably connected to the bending groove 43 Slider 56; when the frame 31 moves outward, the frame 31 uses the rotating shaft 57 to cooperate with the transmission arm 54 to drive the driving rod 55 to move, and the slider 56 on the side wall of the end of the driving rod 55 slides in the bending groove 43 on the side wall of the positioning plate 41, and the bending groove 43 drives the slider 56 to rise. Because the driving rod 55 is restricted by multiple transmission arms 54, the driving rod 55 can move during the rising process. The driving rod 55 drives multiple transmission arms 54 to rotate along the rotating shaft 57 as the axis, and the transmission arm 54 pulls the two connecting strips 53, so that the transmission frame 51 rotates, so that the damping block 52 on the inner wall of the transmission frame 51 is against the outer wall of the shaft rod 32, so as to limit the shaft rod 32 and prevent the shaft roller 33 from rotating, thereby improving the stability of the workpiece located on the shaft roller 33 when the frame 31 moves outward, avoiding the movement of the workpiece on the shaft roller 33 and affecting the unloading, thereby improving practicality.

[0042] Specifically, the lifting unit 4 also includes a return groove 410 provided on the side wall of the positioning plate 41, the return groove 410 is connected to the bending groove 43, the slider 56 is slidably connected to the return groove 410, a clearance groove 46 is provided at the connection between the return groove 410 and the bending groove 43, a rotating rod 47 is fixedly connected in the clearance groove 46, a guide block 48 is rotatably connected to the outer wall of the rotating rod 47, the guide block 48 corresponds to the inclined surface of the bending groove 43, and a torsion spring 49 for applying torsion to the guide block 48 is sleeved on the outer wall of the rotating rod 47; when the slider 56 moves from the bending groove 43 After sliding out, the frame 31 gradually tilts to unload the workpiece. Under the weight of the driving rod 55, the transmission arm 54 rotates and turns straight. When one end of the frame 31 moves back to the band saw machine body 1, the slider 56 slides into the return groove 410 and pushes against the guide block 48, so that the torsion spring 49 is compressed until the slider 56 slides over the guide block 48. At this time, under the elastic force of the torsion spring 49, the guide block 48 rotates, and the slider 56 slides into the bending groove 43. When the frame 31 moves again, the slider 56 slides on the inclined surface of the guide block 48 to be lifted.

[0043] Specifically, there are two locking units 5, which are respectively located on both sides of the frame 31; the locking units 5 located on both sides of the frame 31 can lock the two ends of the shaft rod 32, so that when the workpiece is moved, the limiting strength of the shaft roller 33 is maintained, thereby maintaining the stability of the workpiece when it moves.

[0044] Specifically, the positioning unit 6 includes a fixed plate 61 installed on the upper surface of the frame 31, one side of the fixed plate 61 is threadedly connected to a threaded rod 64, one end of the threaded rod 64 is rotatably connected to a baffle 63, one side of the baffle 63 is symmetrically fixedly connected to a positioning rod 62, one end of the positioning rod 62 passes through the fixed plate 61 and is slidably connected thereto; after the workpiece passes through the band saw machine body 1, one end of the workpiece is abutted against the baffle 63, and then the workpiece is positioned and cut, and the position of the baffle 63 can be adjusted by manually rotating the threaded rod 64, and the positioning rod 62 restricts the baffle 63 so that it does not rotate, thereby improving the efficiency of cutting the workpiece, and there is no need for repeated measurements when cutting batches of workpieces.

[0045] Specifically, two rows of threaded holes 7 are provided on the upper surface of the frame 31, and the two rows of threaded holes 7 are alternately distributed with the multiple shaft rods 32. The fixing plate 61 is installed on the frame 31 by bolts in conjunction with the threaded holes 7, and the length of the threaded rod 64 is greater than the distance between two adjacent threaded holes 7 on the same side; the fixing plate 61 is installed on the frame 31 by bolts in conjunction with the threaded holes 7, and the position of the fixing plate 61 is adjustable, and the baffle 63 can also be adjusted by the threaded rod 64, so that the baffle 63 can arbitrarily adjust the distance between the frame 31 and the cutting position of the band saw machine body 1 to adapt to different cutting requirements of the workpiece.

[0046] Specifically, a liquid receiving box 8 is installed on the bottom surface of the frame 31. The liquid receiving box 8 has a bucket-shaped structure. The inner bottom surface of one end of the liquid receiving box 8 close to the band saw machine body 1 is higher than the inner bottom surface of the other end. The end of the liquid receiving box 8 away from the band saw machine body 1 is connected to a drain pipe 9; when the lifting block 44 lifts one end of the workpiece, the other end of the workpiece is blocked by the baffle 63. At this time, the workpiece is inclined. At this time, the cutting fluid remaining in the workpiece due to cutting can flow into the liquid receiving box 8 for collection and be discharged through the drain pipe 9 to avoid polluting the ground and improve practicality.

[0047] Specifically, the unloading unit 3 further includes a fixing rod 316, which is fixedly connected between the first slide rail 38 and the second slide rail 39; the fixing rod 316 connects the first slide rail 38 and the second slide rail 39 to improve stability and strength.

[0048] In this embodiment, the following steps are implemented:

[0049] Step 1: When the present invention needs to cut a metal tubular workpiece, the positions of the fixing plate 61 and the baffle plate 63 are first adjusted so that the distance between the baffle plate 63 and the cutting position of the band saw machine body 1 corresponds to the size of the workpiece to be cut, and then the workpiece is placed on the feed roller frame 2. The workpiece slides on the feed roller frame 2 so that one end of the workpiece passes through the band saw machine body 1, and the cut portion of the workpiece moves to the shaft roller 33. One end of the workpiece abuts against the baffle plate 63, and the cutting size of the workpiece is positioned. The workpiece is clamped and cut by the band saw machine body 1, and the cut portion of the workpiece is supported by the shaft roller 33. At this time, the workpiece is started. The cylinder 310 works, and the cylinder 310 drives the first support rod 35 and the second support rod 36 to move through the slide rod 311. The first support rod 35 drives the universal wheel 37 at the lower end thereof to slide in the first slide rail 38, and the universal wheel 37 at the lower end of the second support rod 36 slides in the second slide rail 39. The first slide rail 38 and the second slide rail 39 are both fixed to the ground. The first support rod 35 and the second support rod 36 drive the frame 31 to move through the connecting member 34, and the frame 31 drives the workpiece to be cut to move through the shaft roller 33, so that the workpiece and the frame 31 are moved out of the band saw machine body 1. The slide rod 311 drives the first support rod 3 The second support rod 36 is restricted by cooperating with the first sliding opening 312 on the second support rod 36 until the universal wheel 37 at the lower end of the second support rod 36 slides into the inclined groove 317 and drives the second support rod 36 to descend. At this time, the frame 31 is tilted, the second support rod 36 and the frame 31 rotate, and the second support rod 36 drives the universal wheel 37 to slide horizontally in the second slide rail 39, and the second support rod 36 descends. The second support rod 36 moves horizontally, so that the first sliding opening 312 on the second support rod 36 slides on the outer wall of the slide rod 311, and the limiting rod 315 on the second support rod 36 is between the second sliding opening 313 and the third sliding opening The second support rod 36 is restricted by the second slide 313 and the third slide 314, and the slide rod 311 restricts the second support rod 36 through the restriction rod 315, so that the second support rod 36 remains vertical and does not tilt. The frame 31 rotates with the first support rod 35 and the second support rod 36 through the connecting piece 34, and one side of the frame 31 tilts, so that the workpiece slides off the shaft roller 33 to achieve unloading. Then, the cylinder 310 drives the frame 31 to move back, and the universal wheel 37 at the lower end of the second support rod 36 slides out of the inclined groove 317, so that the frame 31 is horizontal and the workpiece can be cut again.

[0050] Step 2: When the frame 31 moves outward, the round block 45 is driven to slide in the bending opening 42 on the positioning plate 41. The positioning plate 41 is fixed on the band saw machine body 1. The moving round block 45 is guided up by the bending opening 42, so that the round block 45 drives the rectangular rod 412 to rise in the slide groove 411. The slide groove 411 restricts the rectangular rod 412. The rectangular rod 412 drives the lifting block 44 to rise, so that the lifting block 44 lifts one end of the cut workpiece, thereby restricting the workpiece, so that the movement of the frame 31 does not cause the workpiece to shift, until the round block 45 slides out of the bending opening 42. At this time, the frame 31 is tilted to unload the workpiece. The outer end of the bending opening 42 is a chamfered structure. When the frame 31 moves back, the chamfered structure is used to make the round block 45 slide back into the bending opening 42.

[0051] Step 3: When the frame 31 moves outward, it drives the driving rod 55 to move. The slider 56 on the side wall of the end of the driving rod 55 slides up with the outer wall of the guide block 48 on the positioning plate 41 and slides along the bending groove 43. The bending groove 43 drives the slider 56 to rise. Due to the restriction of the driving rod 55 and the transmission arm 54, the driving rod 55 is driven to move. The driving rod 55 drives multiple transmission arms 54 to rotate along the rotating shaft 57 as the axis. The transmission arm 54 pulls the two connecting bars 53, so that the transmission frame 51 rotates, so that the damping block 52 on the inner wall of the transmission frame 51 is against the outer wall of the shaft rod 32, so as to limit the shaft rod 32 and make the shaft roller 33 unable to rotate, thereby improving the stability of the workpiece located on the shaft roller 33 when the frame 31 moves outward;

[0052] Step 4: After the slider 56 slides out of the bending groove 43, the frame 31 gradually tilts to unload the workpiece. Under the weight of the driving rod 55, the transmission arm 54 rotates and turns straight. When one end of the frame 31 moves back to the band saw machine body 1, the slider 56 slides into the return groove 410 and pushes up the guide block 48 to compress the torsion spring 49 until the slider 56 slides over the guide block 48. At this time, under the elastic force of the torsion spring 49, the guide block 48 rotates, and the slider 56 slides into the bending groove 43.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A high-efficiency metal cutting band saw, comprising a band saw body (1), characterized in that: A feeding roller frame (2) is installed on one side of the band saw machine body (1), and a material unloading unit (3) is installed on the other side of the band saw machine body (1). The material unloading unit (3) comprises a frame (31), a first slide rail (38) and a second slide rail (39). A plurality of shafts (32) are rotatably connected in the frame (31), and shaft rollers (33) are fixedly connected to the outer walls of the shafts (32). Two groups of connecting members (34) are fixedly connected to the bottom surfaces of both sides of the frame (31). A first support rod (35) and a second support rod (36) are rotatably connected in the two groups of connecting members (34) on both sides of the frame (31). Universal wheels (37) are installed at the lower ends of the first support rod (35) and the second support rod (36). The universal wheels (37) located on both sides of the bottom of the frame (31) are slidably connected to the first slide rail (38) and the second slide rail (39). The universal wheels (37) at the lower end of the first support rod (35) 37) slides with the inner wall of the first slide rail (38), the universal wheel (37) at the lower end of the second support rod (36) slides with the inner wall of the second slide rail (39), two inclined grooves (317) are provided in the second slide rail (39), the inner wall width of the second slide rail (39) is greater than the wheel thickness of the universal wheel (37), the side wall of the second support rod (36) is provided with a first sliding opening (312), the side wall of the first support rod (35) is fixedly connected to a sliding rod (311) slidably connected to the first sliding opening (312), the side wall of the band saw machine body (1) is installed with a cylinder (310), the output end of the cylinder (310) is fixedly connected to the side wall of one of the adjacent sliding rods (311), a lifting unit (4) for lifting a workpiece is installed between the frame (31) and the band saw machine body (1), and a positioning unit (6) for positioning the workpiece is installed on the frame (31); The lifting unit (4) comprises two positioning plates (41) and two slide grooves (411) provided on the side walls of the frame (31); a rectangular rod (412) is slidably connected in the slide groove (411); a lifting block (44) is fixedly connected to the outer wall of the rectangular rod (412); the lifting block (44) is located in the frame (31); both ends of the rectangular rod (412) are fixedly connected to round blocks (45); the two positioning plates (41) are respectively located on both sides of the frame (31) and fixed to the upper surface of the band saw machine body (1); a bending opening (42) is provided on one side of the positioning plate (41); and the round block (45) is slidably connected to the bending opening (42); A locking unit (5) for locking the shaft (32) is installed between the side wall of the frame (31) and the positioning plate (41), the locking unit (5) comprising a plurality of rotating shafts (57) rotatably connected to the side wall of the frame (31), the outer wall of the rotating shaft (57) being fixedly connected to a transmission arm (54), one end of the plurality of transmission arms (54) being rotatably connected to a driving rod (55), both end side walls of the transmission arms (54) being rotatably connected to a connecting strip (53), and the two connecting strips (53) at the same end being connected to each other. ) are provided with a transmission frame (51) which is rotatable between the two transmission frames (51), the upper ends of the two transmission frames (51) are rotatably connected, the rotation points of the upper ends of the two transmission frames (51) are rotatably connected to the side walls of the frame (31), the inner walls of the two transmission frames (51) are fixedly connected with damping blocks (52) corresponding to the shaft rod (32), the lifting unit (4) further includes a bending groove (43) provided on the side wall of the positioning plate (41), and one end of the side wall of the driving rod (55) is fixedly connected with a sliding block (56) which is slidably connected to the bending groove (43).

2. The high-efficiency metal cutting band saw according to claim 1, characterized in that: The material discharging unit (3) further comprises a second sliding opening (313) formed on the outer wall of the sliding rod (311) and a third sliding opening (314) formed on the outer wall of the second supporting rod (36); the third sliding opening (314) is perpendicular to and connected to the first sliding opening (312); a limiting rod (315) is slidably connected inside the third sliding opening (314); and the limiting rod (315) is slidably connected to the second sliding opening (313).

3. The high-efficiency metal cutting band saw according to claim 1, characterized in that: The lifting unit (4) further comprises a return groove (410) provided on the side wall of the positioning plate (41), the return groove (410) being connected to the bending groove (43), the slider (56) being slidably connected to the return groove (410), a clearance groove (46) being provided at the connection point between the return groove (410) and the bending groove (43), a rotating rod (47) being fixedly connected in the clearance groove (46), an outer wall of the rotating rod (47) being rotatably connected to a guide block (48), the guide block (48) corresponding to the inclined surface of the bending groove (43), and a torsion spring (49) for applying torsion force to the guide block (48) being sleeved on the outer wall of the rotating rod (47).

4. The high-efficiency metal cutting band saw according to claim 3, characterized in that: There are two locking units (5), and the two locking units (5) are respectively located on two sides of the frame (31).

5. The high-efficiency metal cutting band saw according to claim 1, characterized in that: The positioning unit (6) comprises a fixing plate (61) mounted on the upper surface of the frame (31); a threaded rod (64) is threadedly connected to one side of the fixing plate (61); one end of the threaded rod (64) is rotatably connected to a baffle (63); one side of the baffle (63) is symmetrically fixedly connected to a positioning rod (62); one end of the positioning rod (62) passes through the fixing plate (61) and is slidably connected to the fixing plate (61).

6. The high-efficiency metal cutting band saw according to claim 5, characterized in that: The upper surface of the frame (31) is provided with two rows of threaded holes (7), the two rows of threaded holes (7) and the plurality of shaft rods (32) are alternately distributed, the fixing plate (61) is mounted on the frame (31) by means of bolts matching the threaded holes (7), and the length of the threaded rods (64) is greater than the spacing between two adjacent threaded holes (7) on the same side.

7. The high-efficiency metal cutting band saw according to claim 1, characterized in that: A liquid receiving box (8) is installed on the bottom surface of the frame (31). The liquid receiving box (8) has a bucket-shaped structure. The inner bottom surface of one end of the liquid receiving box (8) close to the band saw machine body (1) is higher than the inner bottom surface of the other end. The end of the liquid receiving box (8) away from the band saw machine body (1) is connected to a liquid discharge pipe (9).

8. The high-efficiency metal cutting band saw according to claim 2, characterized in that: The unloading unit (3) further comprises a fixing rod (316), wherein the fixing rod (316) is fixedly connected between the first slide rail (38) and the second slide rail (39).

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