A valve cutting machine

Abstract

The present invention provides a valve cutting machine, belonging to the technical field of ball valve cutting. It solves the problem of low cutting efficiency of existing ball valves. This valve cutting machine includes a frame and an upper feeding roller group and a lower feeding roller group both arranged on the frame. A conveying channel is formed between the upper feeding roller group and the lower feeding roller group, which can clamp the ball valve body and convey the ball valve body. A gap is formed between the same sides of the upper feeding roller group and the lower feeding roller group for the valve stem of the ball valve body to extend out. On the frame, outside the conveying channel, there is a cutting knife two that can cut off the valve stem of the ball valve body. The frame is provided with a cutting knife one in a strip shape and vertically passing through the conveying channel. When the conveying channel conveys the ball valve body to move to the cutting knife one, the cutting knife one can cut the ball valve body. The cutting knife two is located behind the cutting knife one along the conveying direction of the ball valve body. This valve cutting machine has the advantages of ensuring the cutting stability of the ball valve while improving the cutting efficiency of the ball valve.

Description

Technical Field

[0001] The present invention belongs to the technical field of ball valve cutting, and in particular, to a valve cutting machine. Background Art

[0002] A PVC ball valve is a valve made of PVC material, mainly used to cut off or connect the medium in the pipeline, and can also be used for the regulation and control of fluids. In order to make resources recyclable, generally, a ball valve cutting machine is used to cut and disassemble the ball valve body 11. The structure of the ball valve body 11 is as Figure 1 shown. One side of the ball valve body 11 has a valve stem 11a made of metal material. First, the valve stem 11a made of metal material is cut off from the ball valve body 11, and then the PVC ball valve body 11 is cut in half to realize the recycling of metal parts and plastic parts.

[0003] At present, the Chinese Patent Network discloses a ball valve cutting machine [Authorization Publication No.: CN206840194U], which includes a workbench, a first cutting wheel, a first clamping plate and a second clamping plate. The first cutting wheel is fixed on the workbench. The first clamping plate is arranged perpendicular to the first cutting wheel. The first clamping plate and the second clamping plate are arranged opposite to each other and can both slide back and forth along the workbench. The workbench is also provided with a second cutting wheel, which is arranged parallel to the first cutting wheel and can slide left and right along the axis. When the ball valve cutting machine works, the ball valve is placed on the workbench, so that both ends of the ball valve are abutted against and clamped by the first clamping plate and the second clamping plate respectively, so that the ball valve remains stable during the cutting process. Then, the first clamping plate and the second clamping plate drive the ball valve to slide along the workbench towards the first cutting wheel. The first cutting wheel starts to cut the whole from the end of the ball valve. After the ball valve passes through the first cutting wheel, the cutting and separation are completed. The second cutting wheel cuts the copper valve stem on the side of the ball valve body.

[0004] The above-mentioned ball valve cutting machine has the following defects: Since the ball valve needs to be cut by first cutting off the metal parts and then cutting the ball valve body in half for subsequent waste recycling, the above structure places the ball valve to be cut between the first clamping plate and the second clamping plate before cutting, and then the first clamping plate and the second clamping plate approach each other to clamp and position the ball valve. Then, after cutting is completed, the cut ball valve is removed from between the first clamping plate and the second clamping plate, and then the ball valve to be cut is clamped between the first clamping plate and the second clamping plate again. The clamping and removal of the ball valve to be cut both take a certain amount of time, making the ball valve cutting non - continuous and the cutting efficiency low. Summary of the Invention

[0005] The purpose of the present invention is to address the above problems existing in the prior art and propose a valve cutting machine. The technical problem to be solved by the present invention is: how to improve the cutting efficiency of the valve cutting machine for the ball valve while ensuring the stability of the ball valve cutting.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A valve cutting machine, comprising a frame, and an upper feeding roller group and a lower feeding roller group both arranged on the frame, characterized in that a conveying channel capable of clamping a ball valve body and conveying the ball valve body is formed between the upper feeding roller group and the lower feeding roller group, a gap for the valve stem of the ball valve body to extend out is formed between the same sides of the upper feeding roller group and the lower feeding roller group, a second cutting knife capable of cutting off the valve stem of the ball valve body is arranged on the frame outside the conveying channel, the frame is provided with a first cutting knife in a strip shape and vertically passing through the conveying channel, when the conveying channel conveys the ball valve body to move to the first cutting knife, the first cutting knife can cut the ball valve body, and the second cutting knife is located behind the first cutting knife along the conveying direction of the ball valve body.

[0008] Working principle: A conveying channel is formed between the lower feeding roller group and the upper feeding roller group, and the ball valve body to be cut is stuffed into the conveying channel. During the conveying process, the conveying channel can clamp and position the ball valve body through the cooperation of the upper and lower feeding roller groups, so that the lower feeding roller group supports and holds up the ball valve body to realize the clamping of the ball valve body to be cut. During the process of the ball valve body being conveyed along the conveying channel, the second cutting knife is located outside the conveying channel. At this time, the valve stem of the ball valve body passes through the gap, and the second cutting knife cuts off the valve stem of the ball valve body. Due to the position setting of the second cutting knife, it will not affect the upper feeding roller group and the lower feeding roller group. The first cutting knife is in a strip shape and vertically passes through the conveying channel. Therefore, during the conveying process of the ball valve body, it needs to pass through the first cutting knife, and the second cutting knife is located behind the first cutting knife along the conveying direction of the ball valve body. Therefore, the second cutting knife first cuts off the valve stem of the ball valve body, and then the first cutting knife cuts the remaining ball valve body in half. Since the first cutting knife needs to cut the whole ball valve body in half, during the cutting process, the front half of the ball valve body has a tendency to separate. Therefore, through the cooperation of the upper feeding roller group, the lower feeding roller group and the conveying channel, the ball valve body is always vertically limited during the cutting process, avoiding the position deviation of the ball valve body during the cutting process, so as to improve the cutting efficiency of the valve cutting machine for the ball valve while ensuring the stability of the ball valve cutting. At the same time, during the working process of this valve cutting machine, only need to continuously stuff the ball valve body to be cut into the conveying channel. The valve cutting machine can automatically clamp, convey and cut the ball valve body, avoiding the repeated loading and unloading processes of clamping the workpiece before cutting and removing the workpiece after cutting in the traditional ball valve cutting machine, making the cutting of the ball valve body have very good continuity and significantly improving the cutting efficiency of the ball valve body.

[0009] In the above-mentioned valve cutting machine, the cutting directions of the first cutting knife and the second cutting knife are both set opposite to the conveying direction of the ball valve body.

[0010] The orientations of the first cutting tool and the second cutting tool are set such that the conveying thrust during the conveying of the ball valve body is directly opposite to the cutting forces of the first cutting tool and the second cutting tool. Therefore, the force received by the ball valve body is in one direction, which will not affect the movement of the ball valve body, avoid large offsets of the ball valve body during conveying, and improve the stability of cutting the ball valve body.

[0011] In the above-mentioned valve cutting machine, the first cutting tool is a saw blade, and the saw blade is close to the horizontal center of the conveying channel.

[0012] Using a long and small-volume cutting tool like a saw blade enables the first cutting tool to be conveniently located between two adjacent lower feeding rollers. And setting the saw blade at the horizontal center of the conveying channel allows the ball valve body to be cut in half during cutting, and the conveying of the cut ball valve body is more convenient, improving the convenience of ball valve cutting.

[0013] In the above-mentioned valve cutting machine, a sawing machine is provided on the frame. A cutting opening is formed on the sawing machine. The saw blade is arranged in the cutting opening and connected to the sawing machine. The conveying channel passes through the cutting opening.

[0014] After the ball valve body is cut in half by the saw blade, the conveying channel can always position the ball valve body and convey the ball valve body forward along the conveying channel, so that before and after being cut, the ball valve body is stably clamped and conveyed through the conveying channel. The cutting opening can make way for the conveying channel, and at the same time, it makes the setting of the saw blade more stable and the replacement more convenient.

[0015] In the above-mentioned valve cutting machine, the upper feeding roller group includes several upper feeding rollers arranged along the length direction of the conveying channel. Two mounting plates are provided on the frame and arranged opposite to each other horizontally. A plurality of sliding grooves are formed on each mounting plate, and the sliding grooves on the two mounting plates correspond one by one. A bearing seat capable of sliding vertically is arranged in each sliding groove. The upper feeding rollers are arranged between the two mounting plates. The upper feeding rollers have a first rotating shaft, and both ends of the first rotating shaft are respectively installed on the corresponding bearing seats.

[0016] The bearing seat can move vertically in the sliding groove. During the lateral conveying of the ball valve body, the ball valve body jacks up the upper feeding rollers, and the upper feeding rollers drive the bearing seats to move upward, so that the upper feeding rollers are pressed against the ball valve body, further ensuring the stability of ball valve cutting.

[0017] In the above-mentioned valve cutting machine, a plurality of guide rods are connected to the frame, and a feed upper plate that can slide vertically is sleeved on the guide rods. A clearance groove for the cutting knife to pass through is opened on the feed upper plate. The feed upper plate is located above the mounting plate and the mounting plate is fixedly connected to the feed upper plate. The plurality of guide rods are connected by a support plate, and a plurality of adjusting screws arranged vertically are rotatably connected to the feed upper plate, and one end of the adjusting screws passes through the support plate and is threadedly connected to the support plate.

[0018] When it is necessary to cut ball valve bodies of different sizes, it is only necessary to rotate the adjusting screw so that the adjusting screw can drive the feed upper plate to slide up and down to the corresponding position, then the adjusting screw stops rotating and is positioned through the threaded connection between the adjusting screw and the support plate. At the same time, the guide rod plays a guiding role to avoid displacement of the feed upper plate during adjustment, so that the initial height of the entire upper feed roller can be adjusted, thereby improving the practicability of the valve cutting machine.

[0019] In the above-mentioned valve cutting machine, each bearing seat is provided with a guide rod, one end of which passes through the feed upper plate, and the frame is provided with a spring that makes the upper feed roller always have a tendency to move downward. The spring is sleeved on the guide rod, and the lower end of the spring abuts against the bearing seat, and the upper end of the spring abuts against the feed upper plate.

[0020] When the bearing seat moves vertically in the slide groove, the guide rod plays a guiding role to prevent the bearing seat from deviation, ensuring that the bearing seat moves vertically smoothly and stably without getting stuck.

[0021] In the above-mentioned valve cutting machine, the lower feed roller group includes a plurality of lower feed rollers arranged along the length direction of the conveying channel, and the lower feed roller and the upper feed roller each include a cylindrical portion and two symmetrically arranged frustum portions, the small head ends of the two frustum portions are arranged opposite to each other, and the cylindrical portion is located between the two frustum portions.

[0022] During the transportation of the ball valve body, the top and bottom of the ball valve body are located between the two frustum parts, and the curved surfaces of the frustum parts are pressed against the outer wall of the ball valve body. The two frustum parts limit the ball valve body to the left and right, avoiding the left and right deviation of the ball valve body during transportation, thereby ensuring the stability of the ball valve body transportation.

[0023] In the above-mentioned valve cutting machine, a base is provided on the frame, a carriage and a driving member for driving the carriage to slide are connected to the base along the width direction of the conveying channel, a third motor is provided on the carriage, and the second set of cutting knives are provided on the rotating shaft of the third motor.

[0024] The driving part drives the carriage to move along the width direction of the conveying channel, thereby driving the second cutting tool to move along the width direction of the conveying channel, adjusting the distance between the second cutting tool and the lower feeding roller, facilitating the cutting of ball valve bodies of various models, and at the same time facilitating the removal of the second cutting tool and replacing the second cutting tool.

[0025] In the above-mentioned valve cutting machine, a side plate is provided on the frame on one side of the mounting plate. A second rotating shaft corresponding to the first rotating shaft one by one is rotatably connected to the side plate. The first rotating shaft and the second rotating shaft are connected by a universal joint. A second motor is provided on the frame, and the second motor drives all the second rotating shafts to rotate.

[0026] After the upper feeding roller moves upward, the first rotating shaft drives the bearing seat to move upward in the sliding groove. Since the first rotating shaft and the second rotating shaft are connected by a universal joint, after the second motor drives all the second rotating shafts to rotate through the transmission mechanism, the second rotating shaft drives the first rotating shaft to rotate through the universal joint, and the first rotating shaft drives the upper feeding roller to rotate. This structure ensures that the driving component two can always drive the upper feeding roller to rotate during the vertical movement of the upper feeding roller.

[0027] In the above-mentioned valve cutting machine, a first driven sprocket and a second driven sprocket are sleeved on each of the second rotating shafts. Two adjacent second rotating shafts are connected by a chain sleeved on the two first driven sprockets or the two second driven sprockets. A first driving sprocket connected by a chain to one of the first driven sprockets or the second driven sprockets is sleeved on the rotating shaft of the second motor.

[0028] The rotation of multiple second rotating shafts is realized through the first driven sprocket, the second driven sprocket and the chain. Then, by connecting the first driving sprocket and one of the driven sprockets through a chain, the second motor drives all the second rotating shafts to rotate synchronously, making the overall transmission process more stable.

[0029] In the above-mentioned valve cutting machine, two horizontally opposite sprocket placement plates are provided on the frame. A plurality of feeding shafts and a plurality of transition wheel shafts are penetrated in the sprocket placement plates. One end of each feeding shaft passes through the sprocket placement plate and is sleeved with the lower feeding roller. A third driven sprocket is sleeved on the other end of the feeding shaft. A fourth driven sprocket is sleeved on the transition wheel shaft. A first motor is provided on the frame. The third driven sprockets on two adjacent feeding shafts are meshed with the fourth driven sprockets on the transition wheel shafts located between two adjacent feeding shafts. One end of one feeding shaft extends out of the sprocket placement plate, and a fifth driven sprocket is sleeved on this end. A second driving sprocket meshed with the fifth driven sprocket by a chain is sleeved on the motor shaft of the first motor.

[0030] The driven sprocket three on the feeding shaft is in transmission connection through meshing with the driven sprocket four on the transition wheel shaft, and one of the feeding shafts extends out of the sprocket placement plate. The driving sprocket two on the first motor drives the driven sprocket five to rotate through a chain, realizing that the first motor drives all the feeding shafts to rotate simultaneously.

[0031] Compared with the prior art, the valve cutting machine of the present invention has the following advantages: During the working process of this valve cutting machine, it is only necessary to continuously insert the ball valve body to be cut into the conveying channel. The valve cutting machine can automatically clamp, convey, and cut the ball valve body, avoiding the repeated loading and unloading processes of clamping the workpiece before cutting and removing the workpiece after cutting in the traditional ball valve cutting machine, making the cutting of the ball valve body have very good continuity and significantly improving the cutting efficiency of the ball valve body. Brief Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of an existing ball valve.

[0033] Figure 2 is one of the three-dimensional structural schematic diagrams of the present invention.

[0034] Figure 3 is a side view of the feeding mechanism in the present invention.

[0035] Figure 4 is one of the partial three-dimensional structural schematic diagrams of the feeding mechanism in the present invention.

[0036] Figure 5 is Figure 2 an enlarged structural schematic diagram of part A in

[0037] Figure 6 is the second partial three-dimensional structural schematic diagram of the feeding mechanism in the present invention.

[0038] Figure 7 is the third partial three-dimensional structural schematic diagram of the feeding mechanism in the present invention.

[0039] Figure 8 is the fourth partial three-dimensional structural schematic diagram of the feeding mechanism in the present invention.

[0040] Figure 9 is the second partial three-dimensional structural schematic diagram of the present invention.

[0041] Figure 10 is a side view of the present invention.

[0042] Figure 11 is Figure 10 an enlarged structural schematic diagram of part B in

[0043] In the figure, 1 is the frame; 101 is the guide rod; 102 is the support plate; 103 is the sprocket placement plate; 103a is the feeding shaft; 103b is the idler wheel shaft; 103c is the fifth driven sprocket; 104 is the discharge port; 105 is the feeding port; 2 is the first cutting knife; 3 is the second cutting knife; 40 is the lower feeding roller group; 4 is the lower feeding roller; 50 is the upper feeding roller group; 5 is the upper feeding roller; 51 is the spring; 52 is the mounting plate; 52a is the chute; 53 is the bearing block; 54 is the first rotating shaft; 55 is the upper feeding plate; 55a is the relief groove; 56 is the adjusting screw; 57 is the guide rod; 58 is the side plate; 58a is the second rotating shaft; 58b is the first driven sprocket; 58c is the second driven sprocket; 59 is the universal joint; 6 is the first driving assembly; 61 is the third driven sprocket; 62 is the fourth driven sprocket; 63 is the first motor; 63a is the second driving sprocket; 7 is the second driving assembly; 71 is the second motor; 71a is the first driving sprocket; 8 is the sawing machine; 81 is the cutting opening; 9 is the cylindrical part; 10 is the frustum part; 11 is the ball valve body; 11a is the valve stem; 12 is the base; 13 is the carriage; 13a is the third motor; 15 is the front hopper; 16 is the rear hopper; 17 is the conveying channel; 18 is the gap. Detailed implementation mode

[0044] The following are specific embodiments of the present invention and in combination with the attached drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0045] Such as Figures 2 to 5 、 Figure 10 And Figure 11As shown in the figure, this valve cutting machine includes a frame 1, an upper feeding roller group 50 and a lower feeding roller group 40. The upper feeding roller group 50 includes a number of upper feeding rollers 5 arranged along the length direction of the conveying channel 17, and the lower feeding roller group 40 includes a number of lower feeding rollers 4 arranged along the length direction of the conveying channel 17. A driving component one 6 for driving all the lower feeding rollers 4 to rotate and a driving component two 7 for driving all the upper feeding rollers 5 to rotate are provided on the frame 1. A conveying channel 17 is formed between the upper feeding roller group 50 and the lower feeding roller group 40, which can clamp the ball valve body 11 and convey the ball valve body 11. The front side of the feeding channel has a feeding port 105, and the rear side has a discharging port 104. Both the lower feeding roller 4 and the upper feeding roller 5 include a cylindrical portion 9 and two symmetrically arranged frustum portions 10. The small head ends of the two frustum portions 10 are arranged opposite to each other, and the cylindrical portion 9 is located between the two frustum portions 10. A spring 51 that always makes the upper feeding roller 5 tend to move downward is provided on the frame 1. A gap 18 is formed between the same sides of the upper feeding roller group 5 and the lower feeding roller group 4 for the valve stem 11a of the ball valve body 11 to extend out. A cutting knife two 3 capable of cutting off the valve stem 11a of the ball valve body 11 is provided on the frame 1 outside the conveying channel 17. The frame 1 is provided with a cutting knife one 2 in a strip shape and vertically passing through the conveying channel 17. When the conveying channel 17 conveys the ball valve body 11 to the cutting knife one 2, the cutting knife one 2 can cut the ball valve body 11. The cutting knife two 3 is located behind the cutting knife one 2 along the conveying direction of the ball valve body 11.

[0046] Place the ball valve body 11 to be cut into the feed port 105 of the conveying channel 17, so that the lower feeding roller 4 supports and lifts the ball valve body 11. Under the action of the spring 51, the upper feeding roller 5 presses the cutting ball valve body 11 tightly against the lower feeding roller 4 to clamp the ball valve body 11 to be cut. The driving component one 6 drives all the lower feeding rollers 4 to rotate, and the driving component two 7 drives all the upper feeding rollers 5 to rotate. Under the combined action of the lower feeding roller 4 and the upper feeding roller 5, the ball valve body 11 to be cut moves along the conveying channel 17 from the feed port 105 towards the discharge port 104. The top and bottom of the ball valve body 11 are both located between the two frustum parts 10, and the curved surfaces of the frustum parts 10 are tightly pressed against the outer side wall of the ball valve body 11. The two frustum parts 10 play a role in limiting the left and right positions of the ball valve body 11, preventing the ball valve body 11 from shifting left and right during transportation and ensuring the stability of the transportation of the ball valve body 11. During the horizontal movement of the ball valve body 11 to be cut, the ball valve body 11 has an irregular shape. Each upper feeding roller 5 in this structure can move vertically relative to the lower feeding roller 4. During the horizontal transportation of the ball valve body 11, multiple upper feeding rollers 5 are tightly pressed against various parts of the ball valve body 11 horizontally, and the entire ball valve body 11 is always in a clamped state, so that the ball valve body 11 does not shift during the cutting process. The cutting knife two 3 is located outside the conveying channel 17. At this time, the valve stem 11a of the ball valve body 11 passes through the gap 18, and the cutting knife two 3 cuts off the valve stem 11a of the ball valve body 11. Since the cutting knife one 2 is strip-shaped and vertically passes through the conveying channel 17, the ball valve body 11 needs to pass through the cutting knife one 2 during the transportation process. And the cutting knife two 3 is located behind the cutting knife one 2 along the transportation direction of the ball valve body 11. Therefore, the cutting knife two 3 first cuts off the valve stem 11a of the ball valve body 11, and then the remaining ball valve body 11 is cut in half by the cutting knife one 2. Since the cutting knife one 2 needs to cut the entire ball valve body 11 in half, there is a tendency for the first half of the ball valve body 11 to separate during the cutting process. Therefore, through the cooperation of the spring 51 and the upper feeding roller 5, the upper feeding roller 5 also always vertically limits the ball valve body 11 during the cutting process, avoiding the position deviation of the ball valve body 11 during the cutting process, so as to improve the cutting efficiency of the ball valve by the valve cutting machine while ensuring the stability of the ball valve cutting. During the working process of the valve cutting machine, only need to continuously place the ball valve body 11 to be cut into the feed port 105. The valve cutting machine can automatically clamp, transport and cut the ball valve body 11, avoiding the repeated loading and unloading processes of clamping the workpiece before cutting and removing the workpiece after cutting in the traditional ball valve cutting machine, making the cutting of the ball valve body 11 have very good continuity and significantly improving the cutting efficiency of the ball valve body 11.

[0047] Such as Figure 2As shown in the figure, a sawing machine 8 is provided on the frame 1. A cutting opening 81 is formed in the sawing machine 8. The first cutting tool 2 is a saw blade. The saw blade is located at the lateral center of the conveying channel 17. The saw blade is arranged in the cutting opening 81 and connected to the sawing machine 8. The conveying channel 17 passes through the cutting opening 81.

[0048] As Figures 2 - 5 shown in the figure, two mounting plates 52 are provided on the frame 1 and arranged opposite to each other in the lateral direction. A plurality of sliding grooves 52a are formed in each of the mounting plates 52. The sliding grooves 52a on the two mounting plates 52 correspond to each other one by one. A bearing seat 53 capable of sliding vertically is arranged in each sliding groove 52a. The upper feeding roller 5 is arranged between the two mounting plates 52. The upper feeding roller 5 has a first rotating shaft 54. The two ends of the first rotating shaft 54 are respectively installed on the corresponding bearing seats 53. A plurality of guide rods 101 are connected to the frame 1. A feeding upper plate 55 capable of sliding vertically is sleeved on the guide rods 101. The feeding upper plate 55 is located above the mounting plate 52 and the mounting plate 52 is fixedly connected to the feeding upper plate 55. A guide rod 57 is arranged on each bearing seat 53. One end of the guide rod 57 passes through the feeding upper plate 55. The spring 51 is a spring. The spring is sleeved on the guide rod 57. The lower end of the spring abuts against the bearing seat 53 and the upper end abuts against the feeding upper plate 55. The bearing seat 53 can move vertically in the sliding groove 52a. During the process of the ball valve body 11 being conveyed horizontally, the ball valve body 11 jacks up the upper feeding roller 5. The upper feeding roller 5 drives the bearing seat 53 to move upward against the acting force of the spring 51, so that the upper feeding roller 5 presses tightly on the ball valve body 11. The guide rod 57 plays a guiding role, preventing the bearing seat 53 from running off, ensuring that the bearing seat 53 moves smoothly and stably vertically without getting stuck.

[0049] Furthermore, as Figures 2 - 11 shown in the figure, a relief groove 55a for the first cutting tool 2 to pass through is formed in the feeding upper plate 55. The feeding upper plate 55 is located above the mounting plate 52 and the mounting plate 52 is fixedly connected to the feeding upper plate 55. The plurality of guide rods 101 are connected by a support plate 102. A plurality of adjusting screws 56 arranged vertically are rotatably connected to the feeding upper plate 55. One end of each adjusting screw 56 passes through the support plate 102 and is threadedly connected to the support plate 102.

[0050] Furthermore, as Figures 2 - 9As shown in the figure, a side plate 58 is provided on the frame 1 on one side of the mounting plate 52. A second rotating shaft 58a corresponding to the first rotating shaft 54 one by one is rotatably connected to the side plate 58. The first rotating shaft 54 and the second rotating shaft 58a are connected by a universal joint 59. The second driving assembly 7 further includes a second motor 71 that drives all the second rotating shafts 58a to rotate. The second driving assembly 7 further includes a first driven sprocket 58b and a second driven sprocket 58c both sleeved on the second rotating shaft 58a. Adjacent second rotating shafts 58a are connected by a chain transmission sleeved on two first driven sprockets 58b or two second driven sprockets 58c. A first driving sprocket 71a connected to one of the first driven sprockets 58b or the second driven sprockets 58c by a chain is sleeved on the rotating shaft of the second motor 71. The transmission between the second motor 71 and the second rotating shaft 58a in the driving assembly can also adopt gear transmission or synchronous belt transmission.

[0051] As Figure 4 , Figure 8 and Figure 9 As shown in the figure, two sprocket placement plates 103 are provided on the frame 1 and arranged horizontally opposite to each other. A plurality of feeding shafts 103a and a plurality of transition wheel shafts 103b are passed through the sprocket placement plates 103. One end of each feeding shaft 103a passes through the sprocket placement plate 103 and is for the lower feeding roller 4 to be sleeved. The first driving assembly 6 includes a third driven sprocket 61 sleeved on the other end of the feeding shaft 103a, a fourth driven sprocket 62 sleeved on the transition wheel shaft 103b, and a first motor 63. The third driven sprockets 61 on two adjacent feeding shafts 103a are engaged with the fourth driven sprockets 62 on the transition wheel shafts 103b located between the two adjacent feeding shafts 103a. The other end of one of the feeding shafts 103a extends out of the sprocket placement plate 103, and a fifth driven sprocket 103c is sleeved on this end. A second driving sprocket 63a engaged with the fifth driven sprocket 103c by a chain is sleeved on the motor shaft of the first motor 63. The first motor 63 drives at least one feeding shaft 103a to rotate through a chain transmission mechanism. After one of the feeding shafts 103a rotates, all the feeding shafts 103a are driven to rotate through a sprocket transmission mechanism, and then all the lower feeding rollers 4 are driven to rotate.

[0052] As Figure 2 As shown in the figure, a base 12 is provided on the frame 1. A drag plate 13 is slidably connected to the base 12 along the width direction of the conveying channel 17, and a driving member for driving the drag plate 13 to slide is provided. A third motor 13a is provided on the drag plate 13. The second cutting knife 3 is sleeved on the rotating shaft of the third motor 13a. The driving member drives the drag plate 13 to move along the width direction of the conveying channel 17, and then drives the second cutting knife 3 to move along the width direction of the conveying channel 17, so as to adjust the distance between the second cutting knife 3 and the lower feeding roller 4, which is convenient for cutting ball valve bodies 11 of various different models. This driving member can be a lead screw nut mechanism or a linear cylinder, etc.

[0053] AsFigures 2 - 4 and Figure 11 As shown in Figure 11 , a front blanking hopper 15 and a rear blanking hopper 16 are fixed on the frame 1. The front blanking hopper 15 is located below the second cutting knife 3, and below the discharge port 104 of the rear blanking hopper 16. After the second cutting knife 3 cuts off the metal part on the ball valve body 11, the metal part falls into the front blanking hopper 15. After the remaining ball valve body 11 is cut in half by the first cutting knife 2, it falls into the rear blanking hopper 16, realizing the classified centralized recycling of different parts.

[0054] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A valve cutting machine, comprising a frame (1), an upper feeding roller group (50) and a lower feeding roller group (40) both arranged on the frame (1), characterized in that, A conveying channel (17) capable of clamping the ball valve body (11) and conveying the ball valve body (11) is formed between the upper feeding roller group (50) and the lower feeding roller group (40). A gap (18) for the valve stem (11a) of the ball valve body (11) to extend out is formed between the same sides of the upper feeding roller group (50) and the lower feeding roller group (40). A second cutting knife (3) capable of cutting off the valve stem (11a) of the ball valve body (11) is provided on the machine frame (1) outside the conveying channel (17). The machine frame (1) is provided with a first cutting knife (2) in a strip shape and vertically passing through the conveying channel (17). When the conveying channel (17) conveys the ball valve body (11) to move to the position of the first cutting knife (2), the first cutting knife (2) can cut the ball valve body (11). The second cutting knife (3) is located behind the first cutting knife (2) along the conveying direction of the ball valve body (11). The first cutting knife (2) is a saw blade, and the saw blade is located at the horizontal center of the conveying channel (17). A sawing machine (8) is provided on the machine frame (1). A cutting opening (81) is formed in the sawing machine (8). The saw blade is arranged in the cutting opening (81) and connected to the sawing machine (8). The conveying channel (17) passes through the cutting opening (81). The upper feeding roller group (50) includes a plurality of upper feeding rollers (5) arranged along the length direction of the conveying channel (17). Two mounting plates (52) are arranged on the machine frame (1) oppositely along the horizontal direction. A plurality of sliding grooves (52a) are formed in each of the mounting plates (52). The sliding grooves (52a) on the two mounting plates (52) correspond to each other one by one. A bearing seat (53) capable of sliding vertically is arranged in each sliding groove (52a). The upper feeding rollers (5) are all arranged between the two mounting plates (52). The upper feeding roller (5) has a first rotating shaft (54), and both ends of the first rotating shaft (54) are respectively installed on the corresponding bearing seats (53). A plurality of guide rods (101) are connected to the machine frame (1). A feeding upper plate (55) capable of sliding vertically is sleeved on the guide rods (101). A relief groove (55a) for the first cutting knife (2) to pass through is formed in the feeding upper plate (55). The feeding upper plate (55) is located above the mounting plate (52) and the mounting plate (52) is fixedly connected to the feeding upper plate (55). The plurality of guide rods (101) are connected by a support plate (102). A plurality of adjusting screws (56) arranged vertically are rotatably connected to the feeding upper plate (55). One end of each adjusting screw (56) passes through the support plate (102) and is in threaded connection with the support plate (102). A guide rod (57) is arranged on each bearing seat (53). One end of the guide rod (57) passes through the feeding upper plate (55). A spring (51) for making the upper feeding roller (5) always have a downward moving tendency is arranged on the machine frame (1). The spring (51) is sleeved on the guide rod (57), and the lower end of the spring (51) abuts against the bearing seat (53).The upper end of the spring (51) abuts against the upper feeding plate (55). The lower feeding roller set (40) includes a plurality of lower feeding rollers (4) arranged along the length direction of the conveying channel (17). Both the lower feeding roller (4) and the upper feeding roller (5) include a cylindrical portion (9) and two symmetrically arranged frustum portions (10). The small head ends of the two frustum portions (10) are arranged opposite to each other, and the cylindrical portion (9) is located between the two frustum portions (10).

2. The cutting valve machine according to claim 1, characterized in that, The cutting directions of the first cutting knife (2) and the second cutting knife (3) are both set opposite to the conveying direction of the ball valve body (11).

3. A valve cutting machine according to claim 1 or 2, characterized in that, A base (12) is provided on the frame (1). Along the width direction of the conveying channel (17), a sliding plate (13) is connected to the base (12), and a driving member for driving the sliding of the sliding plate (13) is provided. A third motor (13a) is arranged on the sliding plate (13), and the second cutting knife (3) is sleeved on the rotating shaft of the third motor (13a).

4. A valve cutting machine according to claim 1, characterized in that, A side plate (58) is provided on the frame (1) on one side of the mounting plate (52). A second rotating shaft (58a) corresponding to the first rotating shaft (54) one by one is rotatably connected to the side plate (58). The first rotating shaft (54) and the second rotating shaft (58a) are connected by a universal joint (59). A second motor (71) is provided on the frame (1), and the second motor (71) drives all the second rotating shafts (58a) to rotate.

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