Pipe cutting machine with automatic positioning and feeding functions and control method of pipe cutting machine

Abstract

The invention discloses a pipe fitting cutting device and aims to provide a pipe fitting cutting machine capable of automatically positioning and feeding and a control method of the pipe fitting cutting machine capable of automatically positioning and feeding, which can automatically complete feeding, clamping and positioning of pipe fittings and is high in positioning precision and automation degree of the pipe fittings. The feeding mechanism is used for feeding the pipe fittings in the feeding mechanism into the material conveying frame, the material jacking assembly is arranged between the material conveying frame and the material containing frame and used for jacking up the pipe fittings so that the centers of the pipe fittings can be matched with the center position of the material pushing assembly, positioning is convenient, the overall automation degree is high, and in the pipe fitting jacking-up process of the material jacking assembly, the pipe fittings are not prone to falling off. The diameter of the pipe fitting in the jacking assembly can be measured, the height needing to be lifted by the jacking assembly can be judged according to the measured diameter data, therefore, the center position of the pipe fitting on the jacking assembly is matched with the center position of the pipe fitting chuck, the positioning precision is high, and the pipe fitting machining device is suitable for the technical field of pipe fitting machining equipment.

Description

Technical Field

[0001] The present invention relates to a pipe cutting device, and more particularly to an automatic positioning and feeding pipe cutting machine and a control method thereof. Background Art

[0002] In the process of round tube production, in order to make the round tube meet the needs of production, the round tube is usually cut into a suitable length before use. The cutting of the round tube is an important process in the production of round tubes. At present, the cutting of the round tube is usually carried out by a grinding wheel saw. Although the cutting speed of the grinding wheel saw is fast, it is easy to deviate during the cutting process of the round tube, the cutting accuracy is low, and the flatness of the incision is poor. After the cutting is completed, the incision needs to be polished, which reduces the production efficiency.

[0003] The existing technology also has a laser tube cutting machine, which cuts round tubes through a high-power density laser beam. The cutting efficiency is high and the surface of the round tube is not damaged during the cutting process. It has been widely used in the field of round tube processing.

[0004] At present, the processing process of pipe cutting machines on the market is usually manual loading, clamping, and cutting. The loading and clamping processes are usually completed manually, and the operation process is cumbersome and difficult to operate. In addition, only a single pipe can be loaded during the entire processing process, resulting in low processing efficiency. When the diameter of the pipe is too large, manual handling is extremely difficult and prone to danger. At the same time, the calculation of the diameter of the pipe to be cut usually requires manual measurement before cutting, which further increases the time required for production. There are also components on the market for automatically loading pipe fittings, which lift the pipe fittings to the corresponding height and push the pipe fittings into the cutting device, but the lifting height needs to be adjusted manually, and the degree of automation is low. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a pipe cutting machine and a control method thereof which can automatically complete the loading and clamping positioning of pipe fittings, has high positioning accuracy of pipe fittings and a high degree of automation.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pipe cutting machine with automatic positioning and loading, comprising a frame, a material transporting rack arranged on the frame, and a pipe cutting device arranged at one end of the frame, a loading mechanism is provided on one side of the material transporting rack, the loading mechanism comprises a plurality of material placing racks arranged along the length direction of the frame and a material blocking assembly arranged on the material placing rack, the material blocking assembly comprises a moving rack arranged on the top of the frame and a material blocking member arranged on the moving rack, a transmission assembly is also provided between the material placing rack and the material transporting rack, and the pipe is transported to the material transporting rack through the loading mechanism and the transmission assembly.

[0007] The present invention is further configured as follows: the material blocking member includes a mounting plate arranged on the mobile frame, a material blocking cylinder arranged on the mounting plate and a material blocking rod arranged on the material blocking cylinder, the mobile frame includes a gear set arranged at both ends of the mobile frame and a rack connected to the gear transmission, and a rotating member is also provided at one end of the gear set close to the material transport frame, the rotating member includes a rotating connecting rod arranged in the gear and a driving motor arranged on the connecting rod, and the driving motor is used to drive the connecting rod to rotate and drive the rack to move.

[0008] The present invention is further configured as follows: the transmission assembly includes a transmission belt spanning between the loading mechanism and the material transport frame and driving gears arranged at both ends of the transmission belt, the driving gear is connected to the transmission belt for transmission, a driving rod is also provided on the driving gear, and a transmission motor is also provided at one end of the driving rod, and the driving rod is used to drive the driving gear to rotate and drive the transmission belt to move under the action of the transmission motor.

[0009] The present invention is further configured as follows: a material starting assembly is also provided on the material rack, the material starting assembly includes a pull rope arranged on the top of the material rack and a wire pulling machine arranged on the bottom of the material rack, the wire pulling machine includes a wire pulling motor and a winding rod arranged in the wire pulling motor, one end of the pull rope is fixedly connected to the material rack, and the other end is fixedly connected to the winding rod.

[0010] The present invention is further configured as follows: a lifting assembly is also provided between the material transport rack and the material storage rack, the lifting assembly includes a lifting cylinder and a lifting plate arranged on the lifting cylinder, the lifting cylinder is used to push the lifting plate to move along the height direction of the frame and lift the pipe fittings to load them into the material transport rack.

[0011] Preferably, clamping pieces are provided at both ends of the ejection plate, and a clamping cylinder is provided between the clamping piece and the ejection plate, and the clamping cylinder is used to drive the clamping pieces to move toward / away from each other along the central axis of the ejection plate.

[0012] The present invention is further configured as follows: a pushing assembly is also provided in the material transport rack, the pushing assembly includes a movable plate arranged on the material transport rack and a pipe chuck arranged on the movable plate, the pipe chuck is provided with a plurality of claws, the pushing assembly is used to clamp the pipe and push it into the pipe cutting device, the pipe cutting device includes a cutting turntable and a cutting head arranged above the cutting turntable, the cutting turntable is provided with a plurality of claws, the claws are used to clamp the pipe in the cutting turntable, and the center position of the pipe chuck matches the center position of the pipe cutting device.

[0013] The present application also provides a control method for a pipe cutting machine with automatic positioning and loading, comprising the following steps: S1, pipe inspection, before processing the pipes, the staff manually inspects the pipes in the material rack, if it is found that the number of pipes in the material rack is too small, it is necessary to add pipes in advance, otherwise, it is judged that the number of pipes in the material rack is sufficient, and jump to S2 to continue inspection; S2, the wire pulling motor drives the winding rod to rotate, and at the same time the winding rod winds the wire rope, the top of the material rack moves inward under the traction force, and pushes the pipe fittings in the material rack to the transmission assembly for loading; S3, the pipes are loaded into the transmission assembly in sequence under the blocking of the material blocking assembly, and at the same time, the driving gear in the transmission assembly rotates through the driving rod, driving the transmission belt to move, so that the pipes on the transmission belt move toward the material transport rack; S4, the ejector assembly detects whether there is a pipe above it. If so, it is determined that there is a pipe at present, and jumps to S5 for loading control. Otherwise, it is determined that there is no pipe on the ejector assembly at present, and the driving rod continues to drive the driving gear to rotate for loading; S5, the clamping parts of the ejection assembly clamp the workpiece, and at the same time the ejection cylinder lifts the ejection plate so that the position of the pipe matches the position of the pipe chuck. The pipe chuck is pushed by the moving plate, and the pipe is clamped and installed in the cutting device for cutting. After cutting, the processed pipe is taken out and jumps back to S4 for further processing.

[0014] Preferably, the material blocking rod is also provided with a pressure detection device, and the step S3 also includes material blocking detection of the pipe fitting, including the following steps: S31, the pressure detection device of the material blocking rod detects the pressure, if the pressure detection device detects that the pressure increases, it is judged that the current pipe fitting is located at the material blocking rod, and the process jumps to S32 to continue the detection; otherwise, it is judged that the current pipe fitting is not located at the material blocking rod, and the pressure detection device continues the detection; S32, the material blocking cylinder drives the blocking rod to slowly lift up, and at the same time, the pressure detection device of the blocking rod detects whether the blocking rod is under pressure. If so, it is determined that the current blocking rod is still blocking the pipe fitting, and the blocking rod continues to be lifted and detects whether the blocking rod is under pressure. Otherwise, it is determined that the distance between the current blocking rod and the transmission belt can allow the pipe fitting to pass through, and the lifting height L1 of the current blocking rod is recorded; S33, the material-blocking cylinder drives the material-blocking rod to move down and reset, and at the same time, the pressure detection device of the material-blocking rod detects whether the pressure changes. If so, it is determined that the current pipe is in contact with the material-blocking rod, and the material-blocking cylinder drives the material-blocking rod to make a reciprocating motion with a stroke of L1, so that the pipe passes through the material-blocking rod. Otherwise, it is determined that the current pipe has not reached the material-blocking rod.

[0015] Preferably, the step S5 further includes positioning of the pipe, including the following steps: S51, clamping the workpiece with a clamping member; S52, the ejector assembly measures the diameter D of the current pipe fitting according to the distance between the clamping parts; S53, set the center height of the pipe chuck to H, lift the ejector plate with the ejector cylinder, the height of the ejector plate is T, and make T+0.5D=H.

[0016] By adopting the above technical solution, the beneficial effects are as follows: 1. A feeding mechanism is provided in the device, and the feeding mechanism is used to feed the pipe fittings inside it into the transport rack. At the same time, a lifting assembly is provided between the transport rack and the material placement rack. The lifting assembly is used to lift the pipe fittings so that the center of the pipe fittings matches the center position of the pushing assembly, thereby facilitating the pipe fittings to be pushed into the pipe fitting chuck of the pushing assembly. After the pipe fittings are fed into the pipe fitting chuck, the pushing assembly pushes the pipe fitting chuck to move toward the cutting turntable, so that the pipe fittings in the pipe fitting chuck are inserted into the clamping claws of the cutting turntable and fixed. The overall automation level is high, and the ejector assembly can measure the diameter of the pipe in the ejector assembly during the process of lifting the pipe, and can determine the height to which the ejector assembly needs to be lifted according to the measured diameter data, so that the center position of the pipe on the ejector assembly matches the center position of the pipe chuck, and the positioning accuracy is high. At the same time, in the process of loading, a material stopper is provided on the material rack for realizing separate loading of pipes. The pipes are blocked by the material stopper, so that the pipes are loaded on the transmission assembly in sequence, and the pipes are prevented from stacking in the ejector assembly and affecting the processing effect.

[0017] 2. Furthermore, in order to realize automatic loading of pipes in the device, a loading mechanism is provided on one side of the material transport rack, and the loading mechanism has a material rack arranged along the length direction of the rack, and the material rack is also provided with a lifting assembly, and the lifting assembly includes a pull rope arranged at the top of the material rack and a wire drawing machine arranged at the bottom of the material rack, and the wire drawing machine includes a wire drawing motor and a winding rod arranged in the wire drawing motor, one end of the pull rope is fixedly connected to the material rack, and the other end is fixedly connected to the winding rod. When the pipe needs to be loaded onto the transmission assembly, the pull rope is tightened by the wire drawing motor, and the pull rope pulls the top of the material rack to make the material rack tilt toward the transmission assembly, and at the same time, the pipes in the material rack are loaded onto the transmission belt.

[0018] 3. At the same time, in order to enable the pipe fittings to be loaded individually to the top material assembly, a blocking assembly is provided on the material storage rack, and the blocking assembly comprises a movable rack and a blocking member arranged on the movable rack, and the blocking member slides on the movable rack and can be set to block the pipe fitting according to needs, and the blocking member comprises a blocking cylinder and a blocking rod arranged on the blocking cylinder, and the blocking rod is driven by the blocking cylinder, and the distance between the blocking rod and the transmission belt is adjusted by the blocking cylinder, so that the distance between the bottom of the blocking rod and the transmission belt is less than the diameter of the pipe fitting, so that the pipe fitting is blocked at the blocking rod, so that the pipe fitting can be loaded to the top material assembly in turn, and when there is no material at the top material assembly, the blocking cylinder can drive the blocking rod to move upward, so that the distance between the bottom of the blocking rod and the transmission belt is temporarily greater than the diameter of the pipe fitting, so that the pipe fitting can pass through the blocking rod and move to the top material assembly for loading, and the overall degree of automation is high.

[0019] 4. In addition, during the process of processing the pipe fitting by the device, in order to improve the overall use effect of the device, during the processing, in order to enable the material blocking rod to block the pipe fitting, the material blocking rod can detect the device. When the pipe fitting is located at the material blocking rod and abuts against the material blocking rod, the pressure detection device at the material blocking rod will detect the increase in pressure value, and then adjust the height of the material blocking rod. Specifically, the material blocking cylinder drives the material blocking rod to lift. At this time, the distance between the bottom of the material blocking rod and the transmission belt increases. If the distance between the bottom of the material blocking rod and the transmission belt is less than the current diameter of the pipe fitting, the pipe fitting is still blocked by the material blocking rod, and the pressure detection device of the material blocking rod measures that the pressure value has not changed and is still greater than 0. The material blocking cylinder continues to drive the material blocking rod to rise. If the distance between the bottom of the material blocking rod and the transmission belt is greater than the current diameter of the pipe fitting, the pipe fitting is not blocked by the material blocking rod. The pressure detection device of the material blocking rod measures that the pressure value is 0, and the current lifting height of the material blocking rod is recorded. The movable material blocking rod makes a reciprocating motion with a stroke of L1, so that the pipe fitting can pass through the material blocking rod while blocking the subsequent pipe fittings, thereby realizing the sequential loading of the pipe fittings in the device. Furthermore, in order to improve the accuracy of the pipe fitting when inserting the pipe fitting chuck and the cutting device, the pipe fitting is transported to the lifting assembly through the transmission assembly, and the lifting assembly lifts the pipe fitting so that the center position of the pipe fitting matches the center position of the pipe fitting chuck to facilitate the insertion of the pipe fitting. Specifically, in order to improve the positioning accuracy of the pipe fitting and the lifting assembly, the lifting assembly has a clamping piece for clamping the pipe fitting. After clamping the pipe fitting, the clamping piece can detect the diameter of the pipe fitting, and the measured diameter of the pipe fitting is D. At the same time, the height of the pipe fitting chuck is H. In order to make the pipe fitting correspond to the pipe fitting chuck, it is necessary to adjust the height of the lifting cylinder, set the height of the lifting plate to T, and adjust the height of T so that T+0.5D=H. At this time, the pipe fitting in the lifting plate matches the pipe fitting chuck, the overall positioning accuracy is high, and the operation difficulty is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the specific structure of an embodiment of a pipe cutting machine with automatic positioning and feeding and a control method thereof of the present invention; Figure 2 It is a schematic diagram of the specific structure of a material blocking assembly of an embodiment of a pipe cutting machine with automatic positioning and feeding and a control method thereof of the present invention; Figure 3 It is a schematic diagram of the specific structure of the transmission assembly of an embodiment of a pipe cutting machine with automatic positioning and feeding and a control method thereof of the present invention; Figure 4 It is a schematic diagram of the specific structure of a material rack of an embodiment of a pipe cutting machine with automatic positioning and loading and a control method thereof of the present invention; Figure 5 A schematic diagram of the specific structure of a material ejection assembly of an embodiment of a pipe cutting machine with automatic positioning and feeding and a control method thereof according to the present invention; Figure 6 It is a schematic diagram of the specific structure of a material pushing assembly of an embodiment of a pipe cutting machine with automatic positioning and loading and a control method thereof of the present invention; Figure 7 A schematic diagram of the specific structure of a pipe cutting device of an embodiment of a pipe cutting machine with automatic positioning and feeding and a control method thereof according to the present invention; Figure 8 A control method flow chart of an embodiment of a pipe cutting machine with automatic positioning and feeding and a control method thereof of the present invention; Fig. 9 It is a flow chart of material blocking detection of an embodiment of a pipe cutting machine with automatic positioning and feeding and a control method thereof of the present invention; Fig.10 It is a pipe positioning flow chart of an embodiment of a pipe cutting machine with automatic positioning and feeding and a control method thereof of the present invention; The reference numerals in the figure are as follows: 1. frame; 2. material transport frame; 3. pipe cutting device; 31. cutting turntable; 32. cutting head; 33. clamping claw; 4. feeding mechanism; 5. material placing frame; 51. material lifting assembly; 52. pull rope; 53. wire pulling motor; 54. winding rod; 6. material blocking assembly; 61. moving frame; 62. material blocking member; 63. material blocking cylinder; 64. material blocking rod; 65. gear set; 66. rack; 67. rotating connecting rod; 68. mounting plate; 7. transmission assembly; 71. transmission belt; 72. driving gear; 73. driving rod; 8. material pushing assembly; 81. material pushing cylinder; 82. material pushing plate; 83. clamping member; 84. clamping cylinder; 9. material pushing assembly; 91. moving plate; 92. pipe chuck; 93. clamping claw. DETAILED DESCRIPTION

[0021] Reference Figures 1 to 10The present invention further describes an automatic positioning and loading pipe cutting machine and a control method thereof.

[0022] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0023] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0024] A pipe cutting machine with automatic positioning and loading includes a frame 1, a transport frame 2 arranged on the frame 1, and a pipe cutting device 3 arranged at one end of the frame 1. A loading mechanism 4 is provided on one side of the transport frame 2. The loading mechanism 4 includes a plurality of material racks 5 arranged along the length direction of the frame 1 and a material blocking assembly 6 arranged on the material racks 5. The material blocking assembly 6 includes a moving frame 61 arranged on the top of the frame 1 and a material blocking member 62 arranged on the moving frame 61. A transmission assembly 7 is also provided between the material rack 5 and the transport frame 2. The pipe is transported to the transport frame 2 through the loading mechanism 4 and the transmission assembly 7.

[0025] The material-blocking member 62 includes a mounting plate 68 arranged on the mobile frame 61, a material-blocking cylinder 63 arranged on the mounting plate 68, and a material-blocking rod 64 arranged on the material-blocking cylinder 63. The mobile frame 61 includes a gear set 65 arranged at both ends of the mobile frame 61 and a rack 66 connected to the gear transmission. The gear set 65 is also provided with a rotating member at one end close to the material transport frame 2. The rotating member includes a rotating connecting rod 67 arranged in the gear and a driving motor arranged on the connecting rod. The driving motor is used to drive the connecting rod to rotate and drive the rack 66 to move.

[0026] The transmission assembly 7 includes a transmission belt 71 spanning between the loading mechanism 4 and the material transport frame 2 and a driving gear 72 arranged at both ends of the transmission belt 71. The driving gear 72 is connected to the transmission belt 71 for transmission. A driving rod 73 is also provided on the driving gear 72. A transmission motor is also provided at one end of the driving rod 73. The driving rod 73 is used to drive the driving gear 72 to rotate and drive the transmission belt 71 to move under the action of the transmission motor.

[0027] The material rack 5 is also provided with a material starting assembly 51, which includes a pull rope 52 arranged at the top of the material rack 5 and a wire pulling machine arranged at the bottom of the material rack 5. The wire pulling machine includes a wire pulling motor 53 and a winding rod 54 arranged in the wire pulling motor 53. One end of the pull rope 52 is fixedly connected to the material rack 5, and the other end is fixedly connected to the winding rod 54.

[0028] A lifting assembly 8 is also provided between the material transport rack 2 and the material storage rack 5. The lifting assembly 8 includes a lifting cylinder 81 and a lifting plate 82 arranged on the lifting cylinder 81. The lifting cylinder 81 is used to push the lifting plate 82 to move along the height direction of the frame 1 and lift the pipe fittings to be loaded into the material transport rack 2.

[0029] Preferably, clamping members 83 are further provided at both ends of the ejection plate 82 , and a clamping cylinder 84 is further provided between the clamping member 83 and the ejection plate 82 , and the clamping cylinder 84 is used to drive the clamping members 83 to move toward / away from each other along the central axis of the ejection plate 82 .

[0030] The material transport rack 2 is also provided with a pushing assembly 9, which includes a moving plate 91 arranged on the material transport rack 2 and a pipe chuck 92 arranged on the moving plate 91, and a plurality of claws 93 are provided on the pipe chuck 92. The pushing assembly 9 is used to clamp the pipe and push it into the pipe cutting device 3. The pipe cutting device 3 includes a cutting turntable 31 and a cutting head 32 arranged above the cutting turntable 31. A plurality of claws 33 are provided in the cutting turntable 31. The claws 33 are used to clamp the pipe in the cutting turntable 31, and the center position of the pipe chuck 92 matches the center position of the pipe cutting device 3.

[0031] A feeding mechanism 4 is provided in the device, and the feeding mechanism 4 is used to feed the pipe fittings inside it into the transport rack 2. At the same time, a lifting assembly 8 is provided between the transport rack 2 and the material rack 5. The lifting assembly 8 is used to lift the pipe fittings so that the center of the pipe fittings matches the center position of the pushing assembly 9, so as to facilitate the pipe fittings to be pushed into the pipe fitting chuck 92 of the pushing assembly 9. After the pipe fittings are fed to the pipe fitting chuck 92, the pushing assembly 9 pushes the pipe fitting chuck 92 to move toward the cutting turntable 31, so that the pipe fittings in the pipe fitting chuck 92 are inserted into the clamping claw 33 of the cutting turntable 31 and fixed. The degree of automation is high, and the lifting component 8 can measure the diameter of the pipe in the lifting component 8 during the process of lifting the pipe, and can determine the height to which the lifting component 8 needs to be lifted according to the measured diameter data, so that the center position of the pipe on the lifting component 8 matches the center position of the pipe clamp 92, and the positioning accuracy is high. At the same time, during the loading process, the material rack 5 is provided with a material stopper 62 for realizing separate loading of the pipe. The pipe is blocked by the material stopper 62, so that the pipe is loaded on the transmission component 7 in sequence, and the pipe is prevented from stacking in the lifting component 8 and affecting the processing effect.

[0032] Furthermore, in order to realize automatic loading of pipes in the device, a loading mechanism 4 is provided on one side of the transport rack 2, and the loading mechanism 4 has a storage rack 5 arranged along the length direction of the frame 1, and the storage rack 5 is also provided with a starting component 51, and the starting component 51 includes a pull rope 52 arranged at the top of the storage rack 5 and a wire drawing machine arranged at the bottom of the storage rack 5, and the wire drawing machine includes a wire drawing motor 53 and a winding rod 54 arranged in the wire drawing motor 53, one end of the pull rope 52 is fixedly connected to the storage rack 5, and the other end is fixedly connected to the winding rod 54, when the pipe needs to be loaded onto the transmission assembly 7, the pull rope 52 is tightened by the wire drawing motor 53, and the pull rope 52 pulls the top of the storage rack 5 so that the storage rack 5 is tilted toward the transmission assembly 7, and at the same time, the pipes in the storage rack 5 are loaded onto the transmission belt 71.

[0033] At the same time, in order to enable the pipe fittings to be fed to the top material assembly 8 separately, the material rack 5 is provided with a blocking assembly 6, and the blocking assembly 6 has a mobile rack 61 and a material blocking member 62 arranged on the mobile rack 61, and the material blocking member 62 slides on the mobile rack 61, and the position of blocking the pipe fittings can be set according to needs, and the material blocking member 62 has a material blocking cylinder 63 and a material blocking rod 64 arranged on the material blocking cylinder 63, and the material blocking rod 64 is driven by the material blocking cylinder 63, and its contact with the material blocking cylinder 63 is adjusted by the material blocking cylinder 63. The distance between the transmission belts 71 makes the distance between the bottom of the blocking rod 64 and the transmission belt 71 less than the diameter of the pipe, so that the pipe is blocked at the blocking rod 64, so that the pipe can be loaded into the top material assembly 8 in sequence. When there is no material at the top material assembly 8, the material blocking cylinder 63 can drive the blocking rod 64 to move upward, so that the distance between the bottom of the blocking rod 64 and the transmission belt 71 is temporarily greater than the diameter of the pipe, so that the pipe can pass through the blocking rod 64 and move to the top material assembly 8 for loading, and the overall degree of automation is high.

[0034] The present application also provides a control method for a pipe cutting machine with automatic positioning and loading, comprising the following steps: S1, pipe inspection, before processing the pipes, the staff manually inspects the pipes in the material rack, if it is found that the number of pipes in the material rack is too small, it is necessary to add pipes in advance, otherwise, it is judged that the number of pipes in the material rack is sufficient, and jump to S2 to continue inspection; S2, the wire pulling motor drives the winding rod to rotate, and at the same time the winding rod winds the wire rope, the top of the material rack moves inward under the traction force, and pushes the pipe fittings in the material rack to the transmission assembly for loading; S3, the pipes are loaded into the transmission assembly in sequence under the blocking of the material blocking assembly, and at the same time, the driving gear in the transmission assembly rotates through the driving rod, driving the transmission belt to move, so that the pipes on the transmission belt move toward the material transport rack; S4, the ejector assembly detects whether there is a pipe above it. If so, it is determined that there is a pipe at present, and jumps to S5 for loading control. Otherwise, it is determined that there is no pipe on the ejector assembly at present, and the driving rod continues to drive the driving gear to rotate for loading; S5, the clamping parts of the ejection assembly clamp the workpiece, and at the same time the ejection cylinder lifts the ejection plate so that the position of the pipe matches the position of the pipe chuck. The pipe chuck is pushed by the moving plate, and the pipe is clamped and installed in the cutting device for cutting. After cutting, the processed pipe is taken out and jumps back to S4 for further processing.

[0035] Preferably, the material blocking rod is also provided with a pressure detection device, and the step S3 also includes material blocking detection of the pipe fitting, including the following steps: S31, the pressure detection device of the material blocking rod detects the pressure, if the pressure detection device detects that the pressure increases, it is judged that the current pipe fitting is located at the material blocking rod, and the process jumps to S32 to continue the detection; otherwise, it is judged that the current pipe fitting is not located at the material blocking rod, and the pressure detection device continues the detection; S32, the material blocking cylinder drives the blocking rod to slowly lift up, and at the same time, the pressure detection device of the blocking rod detects whether the blocking rod is under pressure. If so, it is determined that the current blocking rod is still blocking the pipe fitting, and the blocking rod continues to be lifted and detects whether the blocking rod is under pressure. Otherwise, it is determined that the distance between the current blocking rod and the transmission belt can allow the pipe fitting to pass through, and the lifting height L1 of the current blocking rod is recorded; S33, the material-blocking cylinder drives the material-blocking rod to move down and reset, and at the same time, the pressure detection device of the material-blocking rod detects whether the pressure changes. If so, it is determined that the current pipe is in contact with the material-blocking rod, and the material-blocking cylinder drives the material-blocking rod to make a reciprocating motion with a stroke of L1, so that the pipe passes through the material-blocking rod. Otherwise, it is determined that the current pipe has not reached the material-blocking rod.

[0036] Preferably, the step S5 further includes positioning of the pipe, including the following steps: S51, clamping the workpiece with a clamping member; S52, the ejector assembly measures the diameter D of the current pipe fitting according to the distance between the clamping parts; S53, set the center height of the pipe chuck to H, lift the ejector plate with the ejector cylinder, the height of the ejector plate is T, and make T+0.5D=H.

[0037] When the device is processing the pipe fittings, in order to improve the overall use effect of the device, in the process of processing, in order to enable the blocking rod 64 to block the pipe fittings, the blocking rod 64 can detect the device. When the pipe fittings are located at the blocking rod 64 and abut against the blocking rod 64, the pressure detection device at the blocking rod 64 will detect the increase in pressure value, and then adjust the height of the blocking rod 64. Specifically, the abutting cylinder 63 drives the blocking rod 64 to lift. At this time, the distance between the bottom of the blocking rod 64 and the transmission belt 71 increases. If The distance between the bottom of the blocking rod 64 and the transmission belt 71 is smaller than the current diameter of the pipe. At this time, the pipe is still blocked by the blocking rod 64. The pressure detection device of the blocking rod 64 measures that the pressure value has not changed and is still greater than 0. The blocking cylinder 63 continues to drive the blocking rod 64 to rise. If the distance between the bottom of the blocking rod and the transmission belt 71 is greater than the current diameter of the pipe, the pipe is not blocked by the blocking rod 64. The pressure detection device of the blocking rod 64 measures a pressure value of 0, records the current lifting height of the blocking rod 64, and uses the blocking cylinder 63 in the subsequent processing. The cylinder 63 drives the blocking rod 64 to make a reciprocating motion with a stroke of L1, so that the pipe can pass through the blocking rod 64 while blocking the subsequent pipes, thereby realizing the sequential loading of the pipes in the device. Furthermore, in order to improve the accuracy of the pipe when inserting the pipe chuck 92 and the cutting device, the pipe is transported to the lifting assembly 8 through the transmission assembly 7. The lifting assembly 8 lifts the pipe so that the center position of the pipe matches the center position of the pipe chuck 92 to facilitate the insertion of the pipe. Specifically, in order to improve the positioning accuracy of the pipe and the lifting assembly 8, The ejection assembly 8 has a clamping piece 83 for clamping the pipe fitting. After clamping the pipe fitting, the clamping piece 83 can detect the diameter of the pipe fitting, and the diameter of the pipe fitting is measured to be D. At the same time, the height of the pipe fitting chuck 92 is H. In order to make the pipe fitting correspond to the pipe fitting chuck 92, it is necessary to adjust the height of the ejection cylinder 81, set the height of the ejection plate 82 to T, and adjust the height of T so that T+0.5D=H. At this time, the pipe fitting in the ejection plate 82 matches the pipe fitting chuck 92, the overall positioning accuracy is high, and the operation difficulty is low.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe cutting machine with automatic positioning and loading, comprising a frame (1), a material transport frame (2) arranged on the frame (1), and a pipe cutting device (3) arranged at one end of the frame (1), characterized in that: A loading mechanism (4) is provided on one side of the material transport rack (2), the loading mechanism (4) comprising a plurality of material racks (5) arranged along the length direction of the frame (1) and a material blocking assembly (6) arranged on the material racks (5), the material blocking assembly (6) comprising a moving frame (61) arranged on the top of the frame (1) and a material blocking member (62) arranged on the moving frame (61), a transmission assembly (7) is further provided between the material racks (5) and the material transport rack (2), and the pipe fittings are transported to the material transport rack (2) through the loading mechanism (4) and the transmission assembly (7).

2. The pipe cutting machine with automatic positioning and loading according to claim 1, characterized in that: The material-blocking member (62) comprises a mounting plate (68) arranged on the moving frame (61), a material-blocking cylinder (63) arranged on the mounting plate (68) and a material-blocking rod (64) arranged on the material-blocking cylinder (63); the moving frame (61) comprises a gear set (65) arranged at both ends of the moving frame (61) and a rack (66) connected to the gear transmission; a rotating member is further provided at one end of the gear set (65) close to the material transport frame (2); the rotating member comprises a rotating connecting rod (67) arranged in the gear and a driving motor arranged on the connecting rod; the driving motor is used to drive the connecting rod to rotate and drive the rack (66) to move.

3. The pipe cutting machine with automatic positioning and loading according to claim 1, characterized in that: The transmission assembly (7) comprises a transmission belt (71) spanning between the feeding mechanism (4) and the material transport frame (2), and a driving gear (72) arranged at both ends of the transmission belt (71); the driving gear (72) is transmission-connected to the transmission belt (71); a driving rod (73) is also arranged on the driving gear (72); a transmission motor is also arranged at one end of the driving rod (73); the driving rod (73) is used to drive the driving gear (72) to rotate and drive the transmission belt (71) to move under the action of the transmission motor.

4. The pipe cutting machine with automatic positioning and loading according to claim 1, characterized in that: The material rack (5) is also provided with a material starting assembly (51), the material starting assembly (51) comprising a pull rope (52) arranged at the top of the material rack (5) and a wire drawing machine arranged at the bottom of the material rack (5), the wire drawing machine comprising a wire drawing motor (53) and a winding rod (54) arranged in the wire drawing motor (53), one end of the pull rope (52) is fixedly connected to the material rack (5), and the other end is fixedly connected to the winding rod (54).

5. The pipe cutting machine with automatic positioning and loading according to claim 1, characterized in that: A material lifting assembly (8) is also provided between the material transport rack (2) and the material placement rack (5), the material lifting assembly (8) comprising a material lifting cylinder (81) and a material lifting plate (82) provided on the material lifting cylinder (81), the material lifting cylinder (81) being used to push the material lifting plate (82) to move along the height direction of the frame (1) and lift the pipe fittings to be loaded into the material transport rack (2).

6. The pipe cutting machine with automatic positioning and loading according to claim 5, characterized in that: The two ends of the ejection plate (82) are also provided with clamping members (83), and a clamping cylinder (84) is also provided between the clamping member (83) and the ejection plate (82). The clamping cylinder (84) is used to drive the clamping member (83) to move toward or away from each other along the central axis of the ejection plate (82).

7. The pipe cutting machine with automatic positioning and loading according to claim 1, characterized in that: The material transport frame (2) is also provided with a pushing assembly (9), the pushing assembly (9) comprising a moving plate (91) arranged on the material transport frame (2) and a pipe fitting chuck (92) arranged on the moving plate (91), the pipe fitting chuck (92) being provided with a plurality of claws (93), the pushing assembly (9) being used to clamp the pipe fitting and push it into the pipe fitting cutting device (3), the pipe fitting cutting device (3) comprising a cutting turntable (31) and a cutting head (32) arranged above the cutting turntable (31), the cutting turntable (31) being provided with a plurality of claws (33), the claws (33) being used to clamp the pipe fitting in the cutting turntable (31), and the center position of the pipe fitting chuck (92) matches the center position of the pipe fitting cutting device (3).

8. A control method for a pipe cutting machine with automatic positioning and loading according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, pipe fitting inspection. Before processing the pipe fittings, the staff will manually inspect the pipe fittings in the rack. If it is found that there are too few pipe fittings in the rack, it is necessary to add pipe fittings in advance. Otherwise, it is judged that there are enough pipe fittings in the rack, and the process will be skipped to S2 for further inspection. S2, the wire pulling motor drives the winding rod to rotate, and at the same time the winding rod winds the wire rope, the top of the material rack moves inward under the traction force, and pushes the pipe fittings in the material rack to the transmission assembly for loading; S3, the pipes are loaded into the transmission assembly in sequence under the blocking of the material blocking assembly, and at the same time, the driving gear in the transmission assembly rotates through the driving rod, driving the transmission belt to move, so that the pipes on the transmission belt move toward the material transport rack; S4, the ejector assembly detects whether there is a pipe above it. If so, it is determined that there is a pipe at present, and jumps to S5 for loading control. Otherwise, it is determined that there is no pipe on the ejector assembly at present, and the driving rod continues to drive the driving gear to rotate for loading; S5, the clamping parts of the ejection assembly clamp the workpiece, and at the same time the ejection cylinder lifts the ejection plate so that the position of the pipe matches the position of the pipe chuck. The pipe chuck is pushed by the moving plate, and the pipe is clamped and installed in the cutting device for cutting. After cutting, the processed pipe is taken out and jumps back to S4 for further processing.

9. The control method of the pipe cutting machine with automatic positioning and loading according to claim 8, characterized in that: The material blocking rod is also provided with a pressure detection device, and the step S3 also includes material blocking detection of the pipe fitting, including the following steps: S31, the pressure detection device of the material blocking rod detects the pressure, if the pressure detection device detects that the pressure increases, it is judged that the current pipe fitting is located at the material blocking rod, and the process jumps to S32 to continue the detection; otherwise, it is judged that the current pipe fitting is not located at the material blocking rod, and the pressure detection device continues the detection; S32, the material blocking cylinder drives the blocking rod to slowly lift up, and at the same time, the pressure detection device of the blocking rod detects whether the blocking rod is under pressure. If so, it is determined that the current blocking rod is still blocking the pipe fitting, and the blocking rod continues to be lifted and detects whether the blocking rod is under pressure. Otherwise, it is determined that the distance between the current blocking rod and the transmission belt can allow the pipe fitting to pass through, and the lifting height L1 of the current blocking rod is recorded; S33, the material-blocking cylinder drives the material-blocking rod to move down and reset, and at the same time, the pressure detection device of the material-blocking rod detects whether the pressure changes. If so, it is determined that the current pipe is in contact with the material-blocking rod, and the material-blocking cylinder drives the material-blocking rod to make a reciprocating motion with a stroke of L1, so that the pipe passes through the material-blocking rod. Otherwise, it is determined that the current pipe has not reached the material-blocking rod.

10. The control method of the pipe cutting machine with automatic positioning and loading according to claim 8, characterized in that: The step S5 also includes positioning the pipe fittings, The method comprises the following steps: S51, a clamping member clamps a workpiece; S52, the ejector assembly measures the diameter D of the current pipe fitting according to the distance between the clamping parts; S53, set the center height of the pipe chuck to H, lift the ejector plate with the ejector cylinder, the height of the ejector plate is T, and make T+0.5D=H.

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