Automatic spinning necking cutting equipment for elevator air conditioner body

Abstract

The invention belongs to the technical field of pipe machining, and particularly relates to automatic spinning necking cutting equipment for an elevator air conditioner device body, which comprises a base, and an electric clamping jaw is arranged on one side of the upper end of the base. The device further comprises a spinning cutting mechanism, a positioning grinding mechanism, a single-time feeding amount control mechanism, a feeding speed feedback regulation and control mechanism, a grinding pressure feedback regulation and control mechanism and an automatic grinding duration adjusting mechanism. The single-time feeding amount can be automatically adjusted and controlled according to spinning cutting resistance, the larger the resistance is, the smaller the feeding amount is, the rough deformation and uneven cutting of hard pipe fittings due to the too large feeding amount are avoided, and the rotary cutting quality is improved; the feeding speed can be automatically adjusted according to resistance, if the resistance is large, the speed is low, dimensional deviation caused by too high speed of a workpiece is prevented, and the machining precision is guaranteed; the end of the workpiece can be automatically polished after rotary cutting, the production continuity and efficiency are improved, the polishing pressure and duration can be automatically adjusted according to the characteristics of the workpiece, and the polishing quality is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe processing, and in particular relates to an automatic rotary compression port cutting device for an elevator air conditioner body. Background Art

[0002] For the steel pipe body of the air conditioner's internal oil separator, muffler, and liquid storage tank, the steel plate is usually rolled into a cylinder by argon arc welding and welded into shape, and then the two ends are spun to shrink the opening in a subsequent process. When the weld part of the cylinder is spun, it is found that the thickness at the weld will be slightly thinner, so that pinholes often appear. The longer the spun shrinkage, the more frequent the pinhole phenomenon occurs. Therefore, it is necessary to cut the shrinkage after spinning to a certain size to avoid leakage of the body parts during use. For example, the patent with patent announcement number CN111687641B proposes an automatic spun shrinkage cutting device for the air conditioner body.

[0003] At present, in the spinning and cutting process, the feed amount and feed speed of spinning and cutting are fixed. However, due to the different characteristics of the pipes being spun and cut, the spinning pressure and cutting force they withstand are different. The harder the pipe is, the greater the spinning pressure and cutting force required. However, this will also increase the extrusion pressure on the pipe and the degree of plastic deformation of the material. In order to avoid excessive deformation of the pipe, cracks on the surface or other defects, it is necessary to reduce the feed amount so that the pipe can be plastically deformed evenly under a large pressure to ensure the spinning quality. In addition, a smaller feed amount can also make the friction between the spinning wheel and the pipe relatively stable, which is conducive to controlling the force and deformation during the spinning process and further improving the dimensional accuracy and surface quality of the product. However, the current fixed spinning and cutting feed speeds will affect the spinning cutting quality of the pipe, and after the pipe is cut, the pipe needs to be moved to the grinding mechanism, and then the grinding mechanism is used to grind the end of the pipe cutting position, resulting in very discontinuous production and affecting production efficiency. Summary of the invention

[0004] The object of the present invention is to provide an automatic rotary compression port cutting device for an elevator air conditioner body in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: an automatic rotary compression port cutting device for an elevator air conditioner body, comprising a base, an electric clamping claw on one side of the upper end of the base, and further comprising: A spinning cutting mechanism is installed on the upper end of the base; A positioning and grinding mechanism is fixedly mounted on the upper end of the base and is arranged on one side of the spinning and cutting mechanism; A single feed amount control mechanism is fixedly mounted on the upper end of the spinning cutting mechanism and is transmission-connected to the spinning cutting mechanism; The feed speed feedback control mechanism is installed inside the single feed amount control mechanism; The grinding pressure feedback control mechanism is installed on the positioning grinding mechanism; The automatic adjustment mechanism for grinding duration is installed on the positioning grinding mechanism.

[0006] In the above automatic spinning compression port cutting equipment for the body of an elevator air conditioner, the spinning cutting mechanism includes a first electric slide rail fixedly installed at the upper end of the base. The upper end of the slider in the first electric slide rail is fixedly provided with a support frame. The upper end of the support frame is fixedly provided with a support frame. The rear side of the inner wall of the support frame is rotatably connected with a rotating screw rod. The lower end of the support frame is fixedly provided with a servo motor for driving the rotating screw rod to rotate. The rod wall of the rotating screw rod is threadedly sleeved with a lifting frame. The lower side of the inner wall of the lifting frame is fixedly provided with a spinning wheel. The upper side of the inner wall of the lifting frame is fixedly provided with a cutting knife.

[0007] In the above automatic spinning compression port cutting equipment for the body of an elevator air conditioner, the positioning grinding mechanism includes a second electric slide rail fixedly installed at the upper end of the base. The upper end of the slider in the second electric slide rail is fixedly provided with a moving frame. The side wall of the moving frame is fixedly provided with a positioning seat. The inner upper end of the positioning seat is rotatably connected with a deflecting seat through a rotating shaft. The outer wall of the positioning seat is fixedly provided with a deflecting motor for driving the deflecting seat to rotate. One end of the deflecting seat is fixedly provided with an outward expanding plate. The center of the side wall of the outward expanding plate is fixedly connected with a center rod. The side wall of the outward expanding plate is also fixedly provided with a grinding plate in a ring structure.

[0008] In the above-mentioned automatic rotary compression port cutting device for an elevator air conditioner body, the single feed amount control mechanism includes a plurality of electric telescopic rods symmetrically fixedly inserted into the upper end of the support frame, and the upper movable ends of the plurality of electric telescopic rods are fixedly connected to the same cover shell, the upper end of the rotating screw penetrates the upper end of the support frame and is fixedly connected to a permanent magnet block, the upper end of the cover shell is rotatably sleeved with a transmission shaft, the lower end of the transmission shaft is fixedly provided with an electromagnetic block magnetically connected to the permanent magnet block, and an increasing gear box and a control shell are also fixedly provided outside the cover shell, the lower input end of the increasing gear box is fixedly connected to the upper end of the transmission shaft, and the lower side of the inner wall of the control shell is rotatably connected to a linkage screw, one end of the linkage screw is transmission-connected to the output end of the increasing gear box through a bevel gear assembly, and the The inner wall of the control shell is also fixedly provided with a plurality of guide slide bars arranged parallel to the linkage screw, and the plurality of guide slide bars are slidably sleeved with the same trigger plate, and the trigger plate and the control shell are fixedly provided with a plurality of return springs sleeved outside the guide slide bars on the opposite side, the lower end of the trigger plate is fixedly connected with a mounting plate, and two miniature electric push rods are symmetrically fixedly inserted on the mounting plate, and the lower movable ends of the two miniature electric push rods are fixedly connected with the same arc-shaped threaded plate threadedly connected to the linkage screw, and an adjusting screw is rotatably connected to the upper side of the inner wall of the control shell, and an adjusting motor for driving the adjusting screw to rotate is fixedly provided on the outer wall of the control shell, and an adjusting plate is threadedly sleeved on the rod wall of the adjusting screw, and a trigger switch arranged opposite to the trigger plate is fixedly provided on the side wall of the adjusting plate.

[0009] In the above-mentioned automatic rotary compression port cutting device for an elevator air conditioner body, the feed speed feedback control mechanism includes a feedback resistor rod fixedly mounted on the upper side of the inner wall of the control shell, the feedback resistor rod is arranged parallel to the adjusting screw, and the upper end of the adjusting plate is fixedly mounted with a feedback conductive contact that is in electrical contact with the feedback resistor rod.

[0010] In the above-mentioned automatic rotary compression port cutting equipment for an elevator air conditioner body, the grinding pressure feedback control mechanism includes a U-shaped fixing plate fixedly mounted on one side of the movable frame, the inner wall of the U-shaped fixing plate is fixedly connected to a plurality of limit sliding rods, the lower end side wall of the positioning seat is provided with a plurality of sliding holes slidably sleeved with the limit sliding rods, a plurality of retaining springs sleeved outside the limit sliding rods are fixedly mounted on the opposite side of the U-shaped fixing plate and the positioning seat, and a pressure sensing plate arranged opposite to the positioning seat is fixedly mounted on the rear side of the vertical part of the U-shaped fixing plate.

[0011] In the above-mentioned automatic rotary compression port cutting equipment for an elevator air conditioner body, the automatic grinding time adjustment mechanism includes a confirmation circular shell, an intermediate shaft is rotatably connected at the center of the inner wall of the confirmation circular shell, a reduction motor for driving the intermediate shaft to rotate is fixedly installed on the outer wall of the confirmation circular shell, a stop switch is fixedly installed on one side of the inner wall of the confirmation circular shell, and an arc-shaped pressing block corresponding to the position of the stop switch is fixedly installed on the shaft wall of the intermediate shaft.

[0012] In the above-mentioned automatic rotary compression port cutting device for an elevator air conditioner body, a cutting groove is provided on the center rod, and the cutting groove is arranged in an annular structure.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Through the set spinning and cutting mechanism and single feed control mechanism, the single feed of spinning and cutting can be automatically adjusted based on the resistance encountered during the spinning and cutting process. The greater the resistance, the smaller the single feed, thereby avoiding the deformation of hard pipes during the spinning and cutting process due to their high hardness. If the feed is too large, the local part of the pipe may be subjected to excessive stress under the action of the spinning wheel and the cutting knife, resulting in deformation and uneven cutting problems, thereby effectively improving the spinning and cutting quality.

[0014] By setting up the feed speed feedback control mechanism, the feed speed of spinning and cutting can be automatically controlled based on the resistance encountered during the spinning and cutting process. The greater the resistance, the slower the feed speed, because the greater the resistance will cause the workpiece to produce a greater deformation force. If the feed speed is too fast, the workpiece cannot be fully stabilized and constrained during the deformation process, and dimensional deviations are likely to occur, affecting the processing accuracy.

[0015] By setting the positioning grinding mechanism, grinding pressure feedback control mechanism and grinding time automatic adjustment mechanism, the end of the workpiece can be automatically ground after the spinning cutting is completed, which effectively improves the production continuity and production efficiency, and automatically adjusts the grinding pressure and grinding time based on the characteristics of the workpiece itself. When the hardness of the workpiece increases, the grinding pressure and grinding time are automatically increased to ensure that the desired grinding effect is achieved and the grinding quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the spinning cutting mechanism of the present invention; Figure 4 It is a structural schematic diagram of the positioning and polishing mechanism of the present invention; Figure 5It is a schematic cross-sectional structure diagram of the single feed amount control mechanism of the present invention; Figure 6 It is Figure 5 a partially enlarged structure schematic diagram in Figure 7 It is a schematic structure diagram of the feed speed feedback regulation mechanism of the present invention; Figure 8 It is a schematic structure diagram of the grinding pressure feedback regulation mechanism of the present invention; Figure 9 It is a schematic structure diagram of the automatic adjustment mechanism for grinding duration of the present invention.

[0017] In the figure: 1 base, 2 spinning and cutting mechanism, 21 first electric slide rail, 22 support frame, 23 support frame, 24 rotating screw, 25 servo motor, 26 lifting frame, 27 spinning wheel, 28 cutting tool, 3 positioning and grinding mechanism, 31 second electric slide rail, 32 moving frame, 33 positioning seat, 34 deflection seat, 35 deflection motor, 36 outer expansion plate, 37 center rod, 38 grinding plate, 39 cutting groove, 4 single feed amount control mechanism, 41 electric telescopic rod, 42 housing, 43 permanent magnet block, 44 transmission shaft, 45 electromagnetic block, 46 speed increasing gearbox, 47 control housing, 48 linkage screw, 49 bevel gear assembly, 410 guiding slide rod, 411 trigger plate, 412 return spring, 413 mounting plate, 414 micro electric push rod, 415 arc-shaped threaded plate, 416 adjusting screw, 417 adjusting motor, 418 adjusting plate, 419 trigger switch, 5 feed speed feedback regulation mechanism, 51 feedback resistance rod, 52 feedback conductive contact piece, 6 grinding pressure feedback regulation mechanism, 61 U-shaped fixing plate, 62 limiting slide rod, 63 holding spring, 64 pressure sensing plate, 7 automatic adjustment mechanism for grinding duration, 71 confirmation round shell, 72 intermediate shaft, 73 reduction motor, 74 stop switch, 75 arc-shaped pressing block, 8 electric gripper. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] As Figures 1-9 shown, an automatic spinning, compressing and cutting device for an elevator air conditioner body includes a base 1, and an electric gripper 8 is arranged on one side of the upper end of the base 1. It further includes: The spinning cutting mechanism 2 is installed at the upper end of the base 1. The spinning cutting mechanism 2 includes a first electric slide rail 21 fixedly installed at the upper end of the base 1. The upper end of the slider in the first electric slide rail 21 is fixedly provided with a support frame 22. The upper end of the support frame 22 is fixedly provided with a support frame 23. The rear side of the inner wall of the support frame 23 is rotatably connected to a rotating screw 24. The lower end of the support frame 23 is fixedly provided with a servo motor 25 for driving the rotating screw 24 to rotate. The rod wall of the rotating screw 24 is threadedly sleeved with a lifting frame 26. The lower side of the inner wall of the lifting frame 26 is fixedly provided with a spinning wheel 27. The upper side of the inner wall of the lifting frame 26 is fixedly provided with a cutting knife 28.

[0020] The positioning and grinding mechanism 3 is fixedly installed at the upper end of the base 1 and is arranged on one side of the spinning cutting mechanism 2. The positioning and grinding mechanism 3 includes a second electric slide rail 31 fixedly installed at the upper end of the base 1. The upper end of the slider in the second electric slide rail 31 is fixedly provided with a moving frame 32. The side wall of the moving frame 32 is fixedly provided with a positioning seat 33. The upper end of the positioning seat 33 is rotatably connected to a deflecting seat 34 through a rotating shaft. The outer wall of the positioning seat 33 is fixedly provided with a deflecting motor 35 for driving the deflecting seat 34 to rotate. One end of the deflecting seat 34 is fixedly provided with an outward expanding plate 36. The center of the side wall of the outward expanding plate 36 is fixedly connected with a center rod 37. The side wall of the outward expanding plate 36 is also fixedly provided with a grinding plate 38 in a ring structure. A cutting groove 39 is formed on the center rod 37, and the cutting groove 39 is arranged in a ring structure.

[0021] The single feed amount control mechanism 4 is fixedly installed at the upper end of the spinning cutting mechanism 2 and is in transmission connection with the spinning cutting mechanism 2. The single feed amount control mechanism 4 includes a plurality of electric telescopic rods 41 symmetrically and fixedly inserted into the upper end of the support frame 23. The upper end moving ends of the plurality of electric telescopic rods 41 are fixedly connected to the same housing 42. The upper end of the rotating screw rod 24 penetrates through the upper end of the support frame 23 and is fixedly connected with a permanent magnet block 43. The upper end of the housing 42 is rotatably sleeved with a transmission shaft 44. The lower end of the transmission shaft 44 is fixedly provided with an electromagnetic block 45 magnetically connected to the permanent magnet block 43. A speed increasing gearbox 46 and a control housing 47 are also fixedly installed outside the housing 42. The lower end input end of the speed increasing gearbox 46 is fixedly connected to the upper end of the transmission shaft 44. The lower side inner wall of the control housing 47 is rotatably connected with a linkage screw rod 48. One end of the linkage screw rod 48 is in transmission connection with the output end of the speed increasing gearbox 46 through a bevel gear assembly 49. The inner wall of the control housing 47 is also fixedly provided with a plurality of guiding slide rods 410 arranged parallel to the linkage screw rod 48. A same trigger plate 411 is slidably sleeved outside the plurality of guiding slide rods 410. A plurality of reset springs 412 sleeved outside the guiding slide rods 410 are fixedly installed on the opposite sides of the trigger plate 411 and the control housing 47. The lower end of the trigger plate 411 is fixedly connected with a mounting plate 413. Two micro electric push rods 414 are symmetrically and fixedly inserted into the mounting plate 413. The lower end moving ends of the two micro electric push rods 414 are fixedly connected to the same arc-shaped threaded plate 415 threadedly connected with the linkage screw rod 48. The upper side inner wall of the control housing 47 is rotatably connected with an adjusting screw rod 416. An adjusting motor 417 for driving the adjusting screw rod 416 to rotate is fixedly installed on the outer wall of the control housing 47. The rod wall of the adjusting screw rod 416 is threadedly sleeved with an adjusting plate 418. A trigger switch 419 arranged opposite to the trigger plate 411 is fixedly installed on the side wall of the adjusting plate 418.

[0022] The feed speed feedback control mechanism 5 is installed inside the single feed amount control mechanism 4. The feed speed feedback control mechanism 5 includes a feedback resistance rod 51 fixedly installed on the upper side inner wall of the control housing 47. The feedback resistance rod 51 is arranged parallel to the adjusting screw rod 416. A feedback conductive contact piece 52 in electrical contact with the feedback resistance rod 51 is fixedly installed on the upper end of the adjusting plate 418.

[0023] The grinding pressure feedback control mechanism 6 is installed on the positioning grinding mechanism 3. The grinding pressure feedback control mechanism 6 includes a U-shaped fixing plate 61 fixedly installed on one side of the moving frame 32. A plurality of limiting slide rods 62 are fixedly connected to the inner wall of the U-shaped fixing plate 61. A plurality of sliding holes slidably sleeved with the limiting sliders are formed in the lower side wall of the positioning seat 33. A plurality of holding springs 63 sleeved outside the limiting slide rods 62 are fixedly installed on the opposite sides of the U-shaped fixing plate 61 and the positioning seat 33. A pressure sensing plate 64 arranged opposite to the positioning seat 33 is fixedly installed on the rear side of the vertical part of the U-shaped fixing plate 61.

[0024] The automatic grinding duration adjusting mechanism 7 is installed on the positioning grinding mechanism 3. The automatic grinding duration adjusting mechanism 7 includes a confirmation circular shell 71. A middle shaft 72 is rotatably connected to the center of the inner wall of the confirmation circular shell 71. A reduction motor 73 for driving the middle shaft 72 to rotate self is fixedly installed on the outer wall of the confirmation circular shell 71. A stop switch 74 is fixedly installed on one side of the inner wall of the confirmation circular shell 71. An arc-shaped pressing block 75 corresponding to the position of the stop switch 74 is fixedly installed on the shaft wall of the middle shaft 72.

[0025] The operating principle of the present invention is described as follows: The electric gripper 8 is used to fix the workpiece to be processed and make the workpiece extend into the lifting frame 26. First, the second electric slide rail 31 is started, and the second electric slide rail 31 drives the center rod 37 to move, so that the center rod 37 extends into the inner center position of the workpiece. The electric gripper 8 is equipped with a rotation function to drive the workpiece to rotate at a high speed (this is the prior art and will not be elaborated here). Then, the PLC controller first controls the servo motor 25 to rotate forward. The servo motor 25 drives the rotating screw rod 24 to rotate forward. Through the threaded socket connection between the rotating screw rod 24 and the lifting frame 26, the lifting frame 26 moves upward, and the spinning wheel 27 first abuts against the lower side of the workpiece. A torque sensor is provided in the servo motor 25. When the hardness of the workpiece is greater, a greater abutting pressure between the spinning wheel 27 and the workpiece is required to drive the spinning wheel 27 to move forward relative to the workpiece, thereby necking the workpiece. When the torque sensor in the servo motor 25 reaches the initial threshold value, it indicates that the spinning wheel 27 has contacted the workpiece, and the spinning wheel 27 needs to continue to advance to complete the necking work. At this time, the PLC controller controls the power supply device to supply power to the electromagnet block 45. The electromagnet block 45 is energized to generate a magnetic force opposite to that of the permanent magnet block 43, thereby making the rotating screw rod 24 and the transmission shaft 44 connected together relatively. When the servo motor 25 drives the rotating screw rod 24 to rotate self, it drives the transmission shaft 44 to rotate synchronously. The transmission shaft 44 feeds back the degree of self-rotation through the speed increasing gear box 46 and the bevel gear assembly 49 to drive the linkage screw rod 48 to rotate synchronously. At this time, the micro electric push rod 414 pushes the arc-shaped threaded plate 415 downward, so that the arc-shaped threaded plate 415 is threadedly connected with the linkage screw rod 48, thereby making the linkage screw rod 48 drive the arc-shaped threaded plate 415 and the trigger plate 411 to move in the control housing 47. And the PLC controller controls the adjustment motor 417 to work based on the maximum torque information fed back by the torque sensor when the servo motor 25 can drive the rotating screw rod 24 to rotate self. Specifically, when the hardness of the workpiece is greater, resulting in a greater abutting pressure between the spinning wheel 27 and the workpiece, the greater the torque signal monitored by the torque sensor, the longer the PLC controller controls the adjustment motor 417 to act. The adjustment motor 417 drives the adjustment screw rod 416 to rotate self. Through the threaded socket connection between the adjustment screw rod 416 and the adjustment plate 418, the adjustment plate 418 drives the trigger switch 419 to move a greater distance, thereby making the interval distance between the trigger switch 419 and the trigger plate 411 smaller. Here, the control of the adjustment motor 417 for adjustment actions is regulated based on the torque signal fed back by the torque sensor in the servo motor 25 during the first necking work. Subsequently, the positions of the adjustment plate 418 and the trigger switch 419 are kept unchanged. Thus, when the single feed amount of the spinning wheel 27 to the workpiece is smaller, the trigger plate 411 will press on the trigger switch 419. At this time, it indicates that the single feed amount of the spinning wheel 27 meets the standard. The PLC controller first controls the servo motor 25 to stop acting and controls the first electric slide rail 21 to act. The first electric slide rail 21 drives the spinning wheel 27 to move horizontally to perform the entire necking work on the end wall of the workpiece; After the first electric slide rail 21 drives the spinning wheel 27 to reset and complete the first shrinking work, the PLC controller first controls the micro electric push rod 414 to mobilize the arc threaded plate 415 to move up, so that the arc threaded plate 415 is disconnected from the linkage screw 48, and under the action of the reset spring 412, the trigger plate 411 is reset to the initial position along the guide slide rod 410, and after waiting for 5 seconds to confirm that the trigger plate 411 remains stable, the PLC controller controls the micro electric push rod 414 to drive the arc threaded plate 415 to move down, so that the arc threaded plate 415 is connected to the linkage screw 48 again, and the PLC controller controls the servo motor again 25 rotates forward, thereby advancing the spinning wheel 27 to perform the shrinking work. When the shrinking reaches the standard, the inner wall of the workpiece will be in close contact with the outside of the center rod 37, indicating that the shrinking size reaches the standard. At this time, when the trigger plate 411 has not pressed on the trigger switch 419, the servo motor 25 continues to work, which will cause the torque signal detected by the torque sensor in the servo motor 25 to further increase, and after reaching the preset threshold, it means that the workpiece cannot continue to shrink. At this time, the PLC controller controls the servo motor 25 to stop, and drives the first electric slide 21 to drive the spinning wheel 27 to move for the last time to complete the final shrinking work; When the hardness of the workpiece is greater, the resistance of the spinning wheel 27 is greater, the moving distance of the adjustment plate 418 is greater, and the feedback conductive contact 52 is driven to slide on the feedback resistor rod 51. The access resistance of the feedback resistor rod 51 is greater, and the feedback conductive contact 52 and the feedback resistor rod 51 are connected in series to the power supply circuit of the servo motor 25 and the first electric slide rail 21, so that the working power of the servo motor 25 and the first electric slide rail 21 is smaller, and the feed speed of the spinning wheel 27 is slower, ensuring stable processing of the workpiece, because the resistance will cause the workpiece to produce a larger deformation force. If the feed speed is too fast, the workpiece cannot be fully stabilized and constrained during the deformation process, and dimensional deviation is likely to occur, affecting the processing accuracy; After the spinning work is completed, the PLC controller controls the first electric slide rail 21 to drive the cutting tool 28 to move, so that the cutting tool 28 moves to a position opposite to the cutting groove 39 on the center rod 37. The PLC controller first controls the servo motor 25 to flip with a relatively large power. Until the torque sensor in the servo motor 25 feeds back that the torque information reaches the initial threshold value, it indicates that the cutting tool 28 contacts the workpiece. At this time, the PLC controller controls the servo motor 25 to be connected to the power supply circuit in series with the feedback conductive tab 52 and the feedback resistance rod 51, so that the cutting tool 28 cuts the workpiece at a slower and matching feed speed until the cutting tool 28 moves to the final displacement, that is, the cutting tool 28 enters the cutting groove 39, indicating that the workpiece cutting is completed. At this time, the PLC controller first controls the first electric slide rail 21 to drive the entire spinning and cutting mechanism 2 to move to the right, squeezing the cut part of the workpiece on the center rod 37. The PLC controller then controls the second electric slide rail 31 to drive the center rod 37 to move backward until the center rod 37 moves out of the workpiece. The PLC controller then controls the deflection motor 35 to work, and the deflection motor 35 drives the deflection seat 34 to rotate to the rear side, so that the center rod 37 tilts backward, and the self-weight of the cut workpiece is used to make the workpiece slide off the center rod 37 and be discharged. Since the surface of the center rod 37 is sprayed with a lubricant, the frictional resistance on the surface of the center rod 37 is very small, which can ensure that the cut workpiece slides off smoothly; The PLC controller controls the deflection motor 35 to reverse again, so that the center rod 37 moves to the initial position. The PLC controller controls the second electric slide rail 31 to drive the positioning and grinding mechanism 3 to move again, so that the center rod 37 moves into the workpiece again, and the grinding plate 38 abuts against the end of the workpiece. Since the workpiece is still in a high-speed rotation state, the grinding plate 38 can effectively grind the end of the workpiece, and the pressure magnitude fed back by the positioning seat 33 to the pressure sensing plate 64 can represent the grinding pressure magnitude. The PLC controller controls the second electric slide rail 31 to stop the advancing action only after the pressure sensing plate 64 reaches the grinding pressure threshold value based on the access resistance value information fed back by the feedback resistance rod 51. Specifically, when the access resistance value of the feedback resistance rod 51 is larger, it indicates that the workpiece hardness is greater, and then the PLC controller adjusts the pressure sensing plate 64 to set a larger pressure threshold value, that is, the grinding pressure is greater; And during the grinding operation, the PLC controller synchronously controls the operation of the reduction motor 73. The reduction motor 73 drives the intermediate shaft 72 to rotate, and then drives the arc-shaped pressing block 75 to move within the confirmation circular shell 71. When the arc-shaped pressing block 75 presses on the stop switch 74, it indicates that the grinding duration has reached the standard, and the grinding work is completed. Moreover, the feedback conductive tab 52 and the feedback resistance bar 51 are connected in series in the power supply circuit of the reduction motor 73. The reduction motor 73 is a DC motor. When the hardness of the workpiece is greater and the resistance value of the feedback resistance bar 51 connected is larger, the supply current of the reduction motor 73 is smaller, and the rotational speed of the reduction motor 73 is slower. As a result, the arc-shaped pressing block 75 needs a longer time to press on the stop switch 74, making the grinding duration longer. For workpieces with high hardness, the molecular structure of their materials is more compact and has higher strength. During grinding, the grinding tool needs to overcome greater resistance to remove the material, and the amount of material removed per grinding is relatively small. In order to achieve the required grinding effects, such as flatness, surface finish, etc., more grinding operations are required, resulting in an increase in the grinding duration.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic rotary compression port cutting device for an elevator air conditioner body, comprising a base (1), an electric clamping claw (8) on one side of the upper end of the base (1), characterized in that: Also includes: A spinning cutting mechanism (2) is mounted on the upper end of the base (1); A positioning and grinding mechanism (3) is fixedly mounted on the upper end of the base (1) and is arranged on one side of the spinning and cutting mechanism (2); A single feed amount control mechanism (4) is fixedly mounted on the upper end of the spinning cutting mechanism (2) and is transmission-connected to the spinning cutting mechanism (2); A feed speed feedback control mechanism (5) is arranged in the single feed amount control mechanism (4); A grinding pressure feedback control mechanism (6) is mounted on the positioning grinding mechanism (3); The automatic grinding time adjustment mechanism (7) is mounted on the positioning grinding mechanism (3).

2. The automatic rotary compression port cutting device for an elevator air conditioner body according to claim 1, characterized in that: The spinning and cutting mechanism (2) comprises a first electric slide rail (21) fixedly mounted on the upper end of the base (1); a support frame (22) is fixedly mounted on the upper end of a slider in the first electric slide rail (21); a support frame (23) is fixedly mounted on the upper end of the support frame (22); a rotating screw (24) is rotatably connected to the rear side of the inner wall of the support frame (23); a servo motor (25) for driving the rotating screw (24) to rotate is fixedly mounted on the lower end of the support frame (23); a lifting frame (26) is threadedly sleeved on the rod wall of the rotating screw (24); a spinning wheel (27) is fixedly mounted on the lower side of the inner wall of the lifting frame (26); and a cutting knife (28) is fixedly mounted on the upper side of the inner wall of the lifting frame (26).

3. The automatic rotary compression port cutting device for an elevator air conditioner body according to claim 1, characterized in that: The positioning and polishing mechanism (3) comprises a second electric slide rail (31) fixedly mounted on the upper end of the base (1); a moving frame (32) is fixedly mounted on the upper end of a slider in the second electric slide rail (31); a positioning seat (33) is fixedly mounted on the side wall of the moving frame (32); a deflection seat (34) is rotatably connected to the interior of the upper end of the positioning seat (33) via a rotating shaft; a deflection motor (35) for driving the deflection seat (34) to rotate is fixedly mounted on the outer wall of the positioning seat (33); an outer expansion plate (36) is fixedly mounted on one end of the deflection seat (34); a center rod (37) is fixedly connected to the center of the side wall of the outer expansion plate (36); and a polishing plate (38) with an annular structure is also fixedly mounted on the side wall of the outer expansion plate (36).

4. The automatic rotary compression port cutting device for an elevator air conditioner body according to claim 2, characterized in that: The single feed amount control mechanism (4) comprises a plurality of electric telescopic rods (41) symmetrically fixedly inserted into the upper end of the support frame (23); the upper movable ends of the plurality of electric telescopic rods (41) are fixedly connected to the same cover shell (42); the upper end of the rotating screw rod (24) passes through the upper end of the support frame (23) and is fixedly connected to the permanent magnet block (43); the upper end of the cover shell (42) is rotatably sleeved with a transmission shaft (44); the lower end of the transmission shaft (44) is fixedly provided with an electric magnet magnetically connected to the permanent magnet block (43); A speed increasing gear box (46) and a control housing (47) are fixedly mounted outside the housing (42); the lower input end of the speed increasing gear box (46) is fixedly connected to the upper end of the transmission shaft (44); a linkage screw (48) is rotatably connected to the lower side of the inner wall of the control housing (47); one end of the linkage screw (48) is transmission-connected to the output end of the speed increasing gear box (46) via a bevel gear assembly (49); a plurality of screws parallel to the linkage screw (48) are fixedly mounted on the inner wall of the control housing (47) A guide slide bar (410) is provided, and a plurality of the guide slide bars (410) are slidably sleeved with a same trigger plate (411) outside, and a plurality of return springs (412) sleeved outside the guide slide bar (410) are fixedly installed on one side opposite to the trigger plate (411) and the control housing (47), and a mounting plate (413) is fixedly connected to the lower end of the trigger plate (411), and two miniature electric push rods (414) are symmetrically fixedly sleeved on the mounting plate (413), and the lower end moving ends of the two miniature electric push rods (414) are fixedly sleeved with the guide slide bar (410) and the trigger plate (411) are fixedly sleeved with a mounting plate (413) and the mounting plate (413) are symmetrically fixedly sleeved with the two miniature electric push rods (414), and the lower end moving ends of the two miniature electric push rods (414) are fixedly sleeved with the guide slide bar (410) and the trigger plate (411) are fixedly sleeved with the mounting plate (413 ... A curved threaded plate (415) threadably connected to the linkage screw (48) is fixedly connected, an adjusting screw (416) is rotatably connected to the upper side of the inner wall of the control housing (47), an adjusting motor (417) for driving the adjusting screw (416) to rotate is fixedly mounted on the outer wall of the control housing (47), an adjusting plate (418) is threadably sleeved on the rod wall of the adjusting screw (416), and a trigger switch (419) arranged opposite to the trigger plate (411) is fixedly mounted on the side wall of the adjusting plate (418).

5. The automatic rotary compression port cutting device for an elevator air conditioner body according to claim 4, characterized in that: The feed speed feedback control mechanism (5) comprises a feedback resistor rod (51) fixedly mounted on the upper side of the inner wall of the control housing (47), the feedback resistor rod (51) being arranged in parallel with the adjustment screw (416), and a feedback conductive contact piece (52) in electrical contact with the feedback resistor rod (51) being fixedly mounted on the upper end of the adjustment plate (418).

6. The automatic rotary compression port cutting device for elevator air conditioner body according to claim 3, characterized in that: The grinding pressure feedback control mechanism (6) comprises a U-shaped fixing plate (61) fixedly mounted on one side of the moving frame (32); a plurality of limit slide bars (62) are fixedly connected to the inner wall of the U-shaped fixing plate (61); a plurality of sliding holes slidably sleeved with the limit slide bars are opened on the lower end side wall of the positioning seat (33); a plurality of retaining springs (63) sleeved on the outside of the limit slide bars (62) are fixedly mounted on the opposite side of the U-shaped fixing plate (61) and the positioning seat (33); and a pressure sensing plate (64) arranged opposite to the positioning seat (33) is fixedly mounted on the rear side of the vertical portion of the U-shaped fixing plate (61).

7. The automatic rotary compression port cutting device for an elevator air conditioner body according to claim 1, characterized in that: The automatic grinding time adjustment mechanism (7) comprises a confirmation round shell (71), an intermediate shaft (72) is rotatably connected at the center of the inner wall of the confirmation round shell (71), a reduction motor (73) for driving the intermediate shaft (72) to rotate is fixedly mounted on the outer wall of the confirmation round shell (71), a stop switch (74) is fixedly mounted on one side of the inner wall of the confirmation round shell (71), and an arc-shaped pressing block (75) corresponding to the position of the stop switch (74) is fixedly mounted on the shaft wall of the intermediate shaft (72).

8. The automatic rotary compression port cutting device for an elevator air conditioner body according to claim 3, characterized in that: The central rod (37) is provided with a cutting groove (39), and the cutting groove (39) is arranged in an annular structure.

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