Steel pipe punch forming device and steel pipe forming system for motorcycle frame

Abstract

The invention relates to the technical field of motorcycles, and particularly discloses a steel pipe punch forming device for a motorcycle frame, which comprises at least two punching machines, a conveying line is arranged between the adjacent punching machines, the conveying line has a speed regulation function, and an inductive switch is mounted at the discharge end of the conveying line. A steel pipe forming system comprises a steel pipe punch forming device for a motorcycle frame and further comprises a laser cutting machine, a blanking grid, a material frame, a discharging guide assembly, a discharging assembly, a part taking mechanical arm, a bending machine and a discharging mechanical arm. The discharging guide assembly comprises a first channel and a second channel which communicate with each other, the first channel directly faces the discharging port, and the first channel is of a big-end-up structure; the discharging assembly comprises a conveying belt and a partition piece. The scheme is used for solving the problems that steel pipes are easy to damage and workers are easy to touch the tips of the workpieces to be injured when taking the workpieces when the workpieces are transferred between adjacent procedures of punch forming of steel pipes for motorcycle frames at present.

Description

Technical Field

[0001] The invention relates to the technical field of motorcycles, and in particular to a steel pipe stamping forming device and a steel pipe forming system for a motorcycle frame. Background Art

[0002] The motorcycle frame is a load-bearing part of the motorcycle, and is often formed by steel pipes bent into different shapes and assembled through welding. In the traditional production of steel pipes, the outline is first cut by a cutting machine, and then the steel pipe is sent to a bending machine for bending. After the bending is completed, it is sent to a stamping machine for stamping. During stamping, some workpieces need to be stamped twice to complete, such as first stamping out the shape and then stamping out the required through holes. In actual operation, in order to improve production efficiency, one of the workers is often responsible for the stamping of one process. After each process is stamped, it is placed in a storage box for storage, and the worker of the next process takes it out of the storage box for stamping. During the turnover process, the steel pipe is thrown into the storage box, which is easy to damage the surface of the steel pipe on the one hand, and on the other hand, for irregularly shaped bent steel pipes, they are not neatly stacked, and the ends of the steel pipes are inconsistently oriented. When the workers in the later process take the parts, they are easily injured by the tips of the workpieces with inconsistent directions.

[0003] In addition, in the steel tube forming of the motorcycle frame, the steel tube raw materials are cut and framed, and then transported to the bending machine for bending. After bending, they are framed and sent to the punch press for stamping. In order to improve production efficiency, laser cutting is currently used for steel tube cutting. Laser cutting can achieve the cutting of the workpiece end contour and some holes, greatly improving the cutting efficiency. There are also automatic bending and forming machines for bending after the cut workpiece is installed. However, the time consumption of cutting, bending and punching is different. For workpieces with more bending times, they need to be bent multiple times, and the bending time is longer than laser cutting. The biggest time consumption of the punch press is the picking and placing of the workpiece.

[0004] In laser cutting, each time a workpiece is produced, the head end of the remaining steel pipe needs to be cut to cut out the head end contour of the next workpiece, which generates waste. Current laser cutting equipment does not have a separation structure for waste and workpieces, so that both the cut workpiece and the waste will fall into a messy pile under their own weight.

[0005] In the prior art, the patent announcement number CN112658510B is a laser tube cutting machine feeding device and its working method suitable for various tubes. The technology discloses the whole process from tube feeding, tube cutting, waste and workpiece separation, workpiece unloading, etc., with a very high degree of automation, which solves the above-mentioned problem of waste and workpieces falling into a pile and being very chaotic. And for short workpieces, they directly fall along the blanking support box through the blanking grid, while for long tubes, they are unloaded from the unloading unit and the unloading machine. For the processing of steel tubes for motorcycle frames, the length of the steel tubes of motorcycle frames is relatively short, and the cost of using the unloading unit and the unloading machine is relatively high. A more suitable method is for the workpiece to roll from the grid to the blanking support box, and then fall into the material frame. However, this method of falling along the grid will still cause chaotic accumulation of workpieces in the material frame.

[0006] As for the reason for the mess, during laser cutting, the current more common method is for the fixture to rotate while holding the steel pipe, and the laser head is located above the steel pipe. The section of steel pipe being processed is the head end first and then the tail end. When the tail end is processed, the head end is in a cantilever state. When the tail end is processed, the head end contacts the unloading grid earlier than the tail end. Therefore, after falling along the grid, the workpiece cannot roll parallel to the material frame, causing the workpiece to be in a messy state in the material frame. The laser processing efficiency is high, and the residual heat of the laser on the workpiece also takes a certain amount of time to reduce to a safe temperature. Therefore, the workpiece cannot be sorted out manually at any time. After a period of laser cutting, the cutting needs to be stopped to facilitate manual work with heat-insulating gloves to neatly sort out the workpieces in the material frame. This method, on the one hand, increases labor costs, reduces production efficiency, and there are safety hazards. On the other hand, the method of manually wearing heat-insulating gloves for sorting is not conducive to safe production. Summary of the invention

[0007] The present invention is intended to provide a steel pipe stamping and forming device for motorcycle frames, so as to solve the problems that the steel pipes are easily damaged when the workpieces are transferred between adjacent processes in the current stamping and forming of steel pipes for motorcycle frames, and the workers are easily injured by touching the tip of the workpiece when taking the workpiece.

[0008] In order to achieve the above object, the present invention adopts the following technical scheme:

[0009] A steel pipe stamping and forming device for a motorcycle frame comprises at least two punching machines. A transmission line is arranged between adjacent punching machines. The transmission line has a speed regulating function. An induction switch is installed at the discharge end of the transmission line. When the steel pipe moves to a set position at the discharge end, the transmission line stops moving.

[0010] The principle and advantage of this solution are: when this solution is adopted, even if the adjacent punching machines are performing different stamping processes, there is no need to throw the processed steel pipes into the storage box, but only need to directly take them out from one side and place them on the punching machine for stamping, and then put the products stamped in this process into the conveyor line on the other side. The workers of the next process pick up the workpieces on the conveyor line to perform the stamping of the next process. In the whole process, there is no situation where the stamped steel pipes are thrown into the storage box before the stamping is completed, and then the workers take them out from the chaotic storage box, thereby avoiding the problem of steel pipe damage caused by turnover and the problem of workers being easily injured during the process of taking the parts. In addition, it also helps to improve production efficiency.

[0011] In addition, the induction switch installed on the conveyor line ensures that when the worker in the next process fails to take the workpiece at the end of the conveyor line in time, the conveyor line stops automatically to prevent the workpiece from falling.

[0012] The present invention also provides a steel pipe forming system, including the steel pipe stamping forming device for motorcycle frame, and further including a laser cutting machine, a blanking grid, a material frame, a discharge guide assembly, a discharge assembly, a pick-up manipulator, a bending machine and a blanking manipulator. The laser cutting machine is used to cut the steel pipe. The discharge end of the blanking grid is located above the material frame. The steel pipe cut by the laser cutting machine falls into the material frame along the blanking grid. The bottom surface of the material frame is inclined. A discharge port is provided at the bottom of the material frame. The discharge guide assembly is directly opposite to the discharge port. The discharge guide assembly includes a channel 1 and a channel 2 which are interconnected. The channel 1 is directly opposite to the discharge port. The channel 1 is in a structure of being larger at the top and smaller at the bottom. The maximum width of the channel 1 is greater than the diameter of one steel pipe. The channel 2 only allows one steel pipe to pass through. The discharge assembly is located directly below the channel 2. The discharge assembly includes a conveyor belt and a partition fixed on the conveyor belt. The spacing between adjacent partitions is used to place one steel pipe.

[0013] The picking robot is used to take the steel pipe off the conveyor belt and place it on the bending machine for bending; the bent workpiece is taken away by the unloading robot.

[0014] The present invention realizes the whole process from cutting to bending and finally to stamping of steel pipes through the arrangement of a laser cutting machine, a blanking grid, a material frame, a material discharging guide assembly, a material discharging assembly, a piece picking robot, a bending machine and a material discharging robot, which helps to improve the degree of automation.

[0015] The discharge guide assembly, the discharge assembly and the piece picking robot are arranged between the cutting device and the bending machine, so that the workpieces cut by the laser cutting device are arranged one by one by the discharge assembly after passing through the blanking frame, which is convenient for the piece picking robot to accurately pick up the workpieces and send them to the bending machine.

[0016] In addition, because the cutting efficiency of the laser cutting device is often higher than the bending efficiency of the bending machine, the material frame is used to temporarily store steel pipes that cannot be bent in time; and when both the laser cutting device and the bending machine are working, the material frame can still feed and unload materials.

[0017] Preferably, as an improvement, the channel 1 of the discharge guide assembly has only one side parallel to the steel pipe as an inclined guide surface, and the inclined guide surface makes the channel 1 larger at the top and smaller at the bottom. The inclined guide surface is made of soft material, and the discharge guide assembly also includes a rotatably mounted cam, which can be pressed against the inclined guide surface.

[0018] Beneficial effect: Since the steel pipes have a certain length, it is easy for two or more steel pipes to be stuck in channel one and unable to fall during the unloading process. This solution uses a cam to push the soft inclined guide surface from bottom to top, so that the steel pipes on the inclined guide surface can move upward, thereby providing more space for the steel pipes close to channel two, ensuring that the steel pipes fall smoothly, and ensuring that the steel pipe production system using this solution will not have the problem of steel pipes getting stuck in the channel regardless of whether the material frame is feeding or unloading, or feeding and unloading are carried out simultaneously.

[0019] Preferably, as an improvement, the material frame is equipped with a plurality of inclined support plates distributed along the height of the material frame, the spacing between adjacent inclined support plates is greater than the diameter of the steel pipe, a plurality of seesaws for receiving materials are installed on the side wall of the material frame, the seesaws are rotatably connected to the wall of the material frame, and a counterweight is installed on the part of the seesaw facing the outside of the material frame, and the counterweight makes the side of the seesaw close to the empty space in the material frame tend to be upward in a free state without affecting the falling of the steel pipe;

[0020] The distance between the inclined upward end of the inclined support plate and the seesaw in a free state is greater than the diameter of a steel pipe, the bottom of the material frame is in an inclined state, the inclination direction of the bottom of the material frame is consistent with the inclination direction of the inclined support plate, the distance between adjacent seesaws is equal to the distance between adjacent inclined support plates, and the lower seesaw is pressed down by the steel pipe and rotated, and the adjacent upper seesaw can be pushed to rotate by the counterweight. After the lower inclined support plate is filled with steel pipes, the adjacent upper seesaw is in a state that enables the steel pipe to move along the non-counterweight end of the seesaw to the corresponding inclined support plate;

[0021] A limiting piece is fixed on the material frame, and the limiting piece is located below the lowest seesaw. The limiting piece and the side of the seesaw with a counterweight are counteracted in a free state, so that the non-counterweight end of the lowest seesaw is located in the middle of the gap between the inclined support plate and the seesaw in an initial state. The lowest seesaw rotates to an inclined state after being subjected to the pressure of the steel pipe, and the inclination direction is consistent with the inclination direction of the bottom of the material frame.

[0022] Beneficial effect: When the present solution is adopted, when the steel pipe falls to the gap between the seesaw and the inclined support plate, when the material frame is empty, the steel pipe falls to the non-counterweight end of the lowest seesaw, because the initial state of the lowest seesaw is in the middle of the gap between the inclined support plate and the seesaw under the action of the limiter, the steel pipe can be supported when it falls to the lowest seesaw, and at the same time, the steel pipe also presses the non-counterweight end of the seesaw from the previous upward tilt to the tilted direction toward the bottom of the material frame, so that the steel pipe moves along the bottom of the material frame to gradually fill the bottom of the material frame. When the bottom of the material frame is not filled, after the steel pipe is moved out from the lowest seesaw, the seesaw returns to its original state under the counterweight to facilitate the fall of the next steel pipe.

[0023] After the bottom of the material frame is full, the adjacent upper seesaw also rotates a certain amount under the trigger of the rotation of the lower seesaw, so that the inclined support plate of this layer is gradually filled in the same way after the steel pipe falls, and so on until all the inclined support plates are filled with steel pipes. The whole process realizes the angle and orientation adjustment of the steel pipe through the feed guide assembly, so that it can move to the feeding position of the material frame along the defined channel, and realizes the automatic sorting and arrangement of the steel pipe in the material frame with the cooperation of the inclined support plate, the seesaw and the limiter. The whole process does not require human participation, and the part that requires manual arrangement is realized with a simple mechanical structure, which solves the problem that the cut workpiece and the waste material cannot be separated after the steel pipe is cut, and also solves the problem that the fallen steel pipes after cutting are easily piled up in the material frame and require special manual processing, which increases the labor cost and safety hazards.

[0024] Preferably, as an improvement, it also includes a feed guide assembly, which is provided with a guide channel and a blanking channel which are interconnected, the guide channel has a trumpet opening, the cross-section of the guide channel is larger than the cross-section of the blanking channel, the width of the blanking channel is 1-1.5 times the width of the steel pipe, the blanking channel is located directly above the gap between the inclined support plate and the seesaw, and the steel pipe moves from the blanking grid into the guide channel.

[0025] Beneficial effect: When this solution is adopted, due to the slight falling time difference between the head and tail ends of the steel pipe, it is difficult for the steel pipe to automatically and accurately fall into the gap between the inclined support plate and the seesaw after falling; and this solution, through the setting of the feed guide component, makes it possible for the cut steel pipe workpiece to adjust the angle and position in the guide channel and then fall accurately along the blanking channel to the gap between the seesaw and the inclined support plate.

[0026] Preferably, as an improvement, the feed guide assembly also includes a single-sided guide channel, the guide surface of the single-sided guide channel faces the inside of the material frame, and the blanking channel and the single-sided guide channel at the bottom of the top guide channel form a situation where the size is the largest at the top and the smallest in the middle, and the size of the opening at the bottom is the second largest, so as to ensure accurate blanking, and automatically arrange the steel pipes neatly after there is no corresponding seesaw on the uppermost inclined support plate, and it is not easy for the steel pipes to get stuck at the discharge end of the feed guide assembly.

[0027] Preferably, as an improvement, the counterweight on the seesaw includes a short counterweight and a long counterweight, the short counterweight can be rotated to between the rotation centers of the upper and lower seesaws, the long counterweight is located outside the material frame, and a mounting groove for the seesaw is provided on the material frame. Under the free weight of the seesaw, the long counterweight abuts against the outer edge of the mounting groove so that the non-counterweight end of the seesaw can be located in the mounting groove, and both the short counterweight and the long counterweight can be used to push the adjacent upper seesaw to rotate, and the angle range of the seesaw relative to the free state is greater than 90° and less than 140°, so that the lower seesaw can rotate relative to the upper seesaw. After the steel pipe on the seesaw is removed, the upper seesaw rotates to a large enough angle under the pressure of the steel pipe to allow the upper steel pipe to move downward, so as to avoid the problem that the steel pipe on the seesaw is stuck between the nearby inclined support plate and the seesaw, ensuring that even if there are continuous steel pipes discharged from the lower discharge port, the steel pipe feeding in the material frame and the automatic neat arrangement of the steel pipes are not affected, so that the material frame can be used as both a material receiving container and a material discharging container, and when the discharge and receiving rhythms are inconsistent, the steel pipes that have been laser cut due to higher efficiency can still be temporarily stored in the material frame.

[0028] Preferably, as an improvement, the inclined support plate is detachably connected to the material frame, so that the material frame becomes a conventional material stacking frame by removing the inclined support plate.

[0029] Preferably, as an improvement, a baffle is provided on the discharge port, which can expose or block the discharge port, and the distance between the inclined support plate directly above the discharge port and the adjacent material frame wall is greater than the distance between one steel pipe, so that when the material frame is needed only for storing materials, it can be shielded by the baffle, and when the material frame needs to discharge the steel pipes, the baffle can be opened, so that the steel pipes can be automatically discharged from the discharge port one by one.

[0030] Preferably, as an improvement, the laser cutting machine is provided with an inclined surface, which is located in the falling direction of the steel pipe after being cut, and the inclined surface is inclined downward toward the material frame, the blanking grid is horizontal, the blanking grid is connected to the inclined surface, and the bell mouth of the feed guide assembly is composed of enclosed front and rear left and right side panels, one of which is located directly below the end of the blanking grid, and the remaining side panels are higher than the blanking grid; this scheme uses the inclined surface of the laser cutting machine to cooperate with the blanking grid and the feed guide assembly with highly protruding side panels, so that the steel pipe workpiece falling after laser cutting first rolls toward the blanking grid under the obstruction of the inclined surface, and then reduces the rolling speed under the action of the parallel blanking grid, thereby reducing the strength of the steel pipe when it collides with other components and reducing the noise caused by the collision. The parallel blanking grid and inclined surface use the inclined surface to make small-sized waste during laser cutting (such as flaky waste and cutting waste generated by cutting holes) fall along the inclined surface, while larger tubular waste (such as a section of waste at the end during end contour cutting) will roll to the blanking grid and fall in the blanking grid. At this time, the falling positions of the flaky waste and the tubular waste are different, so different containers can be used to collect them separately, realizing the fine and automatic separation of the waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention.

[0032] Figure 2 for Figure 1 Top view of the .

[0033] Figure 3 It is a schematic diagram of the three-dimensional structure of the steel pipe forming system according to the second embodiment of the present invention.

[0034] Figure 4 for Figure 3 Schematic diagram after rotation angle.

[0035] Figure 5 This is a schematic diagram of the three-dimensional structure of the second embodiment without showing the steel pipe stamping forming device for the motorcycle frame.

[0036] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure without showing the bending machine, the discharge guide assembly and the discharge assembly.

[0037] Figure 7 for Figure 6 The middle is a partially enlarged schematic diagram showing the relationship between the laser head, the space mobile module, and the traction component.

[0038] Figure 8 for Figure 6 A three-dimensional structural schematic diagram of the material frame, blanking grid, feed guide assembly, discharge guide assembly and discharge assembly is shown in FIG.

[0039] Fig. 9 for Figure 8 Schematic diagram of the three-dimensional structure after rotation angle.

[0040] Fig.10 for Figure 8 Left section diagram of .

[0041] Fig.11 for Fig.10 Cross-sectional view of the center frame.

[0042] Fig.12 A three-dimensional schematic diagram of the seesaw structure.

[0043] Fig.13 It is a schematic diagram of the material frame opening the discharge port and the left steel pipe of the second layer falling down when the material frame is discharging materials. DETAILED DESCRIPTION

[0044] The following is further described in detail through specific implementation methods:

[0045] The figure marks in the drawings of the specification include: punching machine 10, conveyor line 20, induction switch 30, laser cutting machine 1, chuck 11, support roller 12, spatial mobile module 13, support seat 14, driver 15, clamping block 16, rotating arm 17, inclined surface 18, blanking grid 2, material frame 3, inclined support plate 31, steel plate 32, seesaw 33, short counterweight 331, long counterweight 332, limiter 34, discharge port 35, baffle plate 36, movable roller 37 feed guide assembly 4, guide channel 41, blanking channel 42, single-sided guide channel 43, discharge guide assembly 5, channel one 51, channel two 52, cam 53, discharge assembly 6, conveyor belt 61, partition 61, bending machine 7, steel pipe 100.

[0046] Embodiment 1

[0047] Combination Figure 1 and Figure 2 A steel pipe stamping forming device for a motorcycle frame includes at least two punching machines 10. A transmission line 20 is arranged between adjacent punching machines 10. The transmission line 20 has a speed regulation function. An induction switch 30 is installed at the discharge end of the transmission line 20. When the steel pipe moves to the set position at the discharge end, the transmission line 20 stops moving. In this embodiment, the induction switch 30 is a photoelectric induction switch 30.

[0048] When this embodiment is used, even if the adjacent punch presses 10 perform different stamping processes, it is not necessary to throw the processed steel pipes into the storage frame, but only to directly take them out from one side and place them on the punch press 10 for stamping, and then put the products stamped in this process into the conveyor line 20 on the other side. The workers of the next process pick up the workpieces on the conveyor line 20 to perform the stamping of the next process. In the whole process, there is no situation where the stamped steel pipes are thrown into the storage frame before the stamping is completed, and then the workers take them out from the chaotic storage frame, thereby avoiding the problem of steel pipe damage caused by turnover and the problem of workers being easily injured during the process of taking out the parts. In addition, it also helps to improve production efficiency.

[0049] In addition, the induction switch 30 provided on the conveyor line 20 enables the conveyor line 20 to automatically stop when the worker of the next process fails to take the workpiece at the end of the conveyor line 20 in time, thereby preventing the workpiece from falling.

[0050] Embodiment 2

[0051] The second embodiment is further optimized based on the first embodiment, and the details are as follows:

[0052] Combination Figures 3 to 13 The second embodiment provides a steel pipe forming system, including a laser cutting machine 1, a blanking grid 2, a material frame 3, a feed guide assembly, a discharge guide assembly 5, a discharge assembly 6, a pick-up manipulator, a bending machine 7, a blanking manipulator and the steel pipe stamping forming device for a motorcycle frame of the first embodiment. The steel pipe cut by the laser cutting machine 1 passes through the blanking grid 2 and enters the feed guide assembly. The feed guide assembly guides the cut steel pipe workpiece to accurately fall into the material frame 3, and the material frame 3 automatically arranges and discharges the steel pipes in an orderly manner. The bottom of the material frame 3 is provided with a discharge port 35. The steel pipes discharged from the discharge port 35 enter the discharge assembly 6 under the guidance of the discharge guide assembly 5 and are arranged in sequence. The arranged steel pipes are taken by the pick-up robot at a specific and same position and sent to the bending machine 7 for bending by the bending machine 7. After the bending is completed, the unloading robot grabs the bent workpiece and places it in a preset position or directly puts it into the stamping die of the punching machine 10. The post-process personnel take the bent workpiece from the preset position and send it to the punching machine 10 for stamping. Among them, the pick-up robot and the unloading robot can be current robots or truss robots. The pick-up robot is a prior art and is not explained here and is not shown in the figure. The bending machine 7 adopts an automatic bending and forming round tube bending machine 7, also known as a pipe bending machine.

[0053] The specific structure is as follows:

[0054] 1. Laser cutting machine 1 and blanking grid 2

[0055] The laser cutting machine 1 adopts the laser cutting machine 1 in the prior art. The chuck 11 of the laser cutting machine 1 can clamp the steel pipe and drive the steel pipe to rotate at the same time. The feeding side and the laser cutting side of the processed steel pipe are located on both sides of the chuck 11, and the feeding side is supported by the support roller 12; on the laser cutting side, the laser head is installed on the space moving module 13, and the space moving module 13 drives the laser head to move up and down and / or move along the axial direction of the chuck 11. In this embodiment, the space moving module 13 includes a Z-axis module and a Y-axis module. The Z-axis module is used to drive the laser head to move up and down. The Z-axis module is installed at the output end of the Y-axis module, and the output end of the Y-axis module is also installed with The traction assembly includes a support seat 14, a driver 15 and symmetrically arranged clamping blocks 16. The support seat 14 is fixed to the output end of the Y-axis module. The driver 15 is fixed to the support seat 14. Each clamping block 16 is connected to a rotating arm 17. The driver 15 drives the rotating arm 17 to swing through a transmission assembly (the transmission assembly is not shown in the prior art figure). After the rotating arm 17 swings, it drives the corresponding clamping block 16 to stick to the steel pipe or move away from the steel pipe. After the clamping blocks 16 are close to each other and clamp the steel pipe, the chuck 11 releases the clamping of the steel pipe, and it can drive the steel pipe to move axially under the movement of the Y-axis module, so as to realize the traction before each steel pipe processing. After the traction is in place, the laser head is started to laser cut the steel pipe.

[0056] An inclined surface 18 is provided on the laser cutting machine 1. The inclined surface 18 is located in the falling direction of the steel pipe after being cut, that is, the inclined surface 18 is located directly below the laser head. The inclined surface 18 is inclined downward toward the blanking grid 2. The blanking grid 2 is horizontal. The blanking grid 2 includes a plurality of support tubes fixed on the side of the laser cutting machine 1 casing with a certain spacing. The blanking grid 2 is connected to the inclined surface 18.

[0057] The small-sized waste (such as flaky waste and cutting waste) generated by the laser cutting machine 1 slides along the inclined surface 18, while the tubular waste rolls along the inclined surface 18 to the position of the grid and falls from the gap in the grid, and the cut workpiece continues to move along the blanking grid 2 to the feed guide assembly, thereby realizing the separation of small-sized waste, tubular waste and cut workpieces, and corresponding collection containers are set at the falling positions of small-sized waste and tubular waste to facilitate collection; and during the separation process, the moving speed of the steel pipe is reduced by the horizontal blanking grid 2, which helps to reduce the collision noise caused by the falling process of the steel pipe.

[0058] 2. Feed guide assembly and material frame 3

[0059] The feed guide assembly includes front, rear, left and right side panels that are surrounded on all sides. The enclosed side panels make the feed guide assembly include a guide channel 41 and a blanking channel 42 that are interconnected. The guide channel 41 has a trumpet opening. The cross-section of the guide channel 41 is larger than the cross-section of the blanking channel 42. The width of the blanking channel 42 is 1-1.5 times the width of the steel pipe. The trumpet mouth is composed of the enclosed front, rear, left and right side panels. One of the side panels of the guide channel 41 is located directly below the end of the blanking grid 2, and the remaining side panels are higher than the blanking grid 2, so that the steel pipe can smoothly fall into the guide channel 41 and smoothly fall into the material frame 3 through the blanking channel 42.

[0060] The top of the material frame 3 is open, and a plurality of inclined support plates 31 distributed along the height of the material frame 3 are installed inside the material frame 3. The inclined support plates 31 are axially parallel to the chuck 11, and the front and rear ends of the inclined support plates 31 are inserted into the material frame 3. When the material frame 3 is used as a conventional stacking frame, the inclined support plates 31 can be directly pulled out of the material frame 3, thereby realizing two different usage methods of the material frame 3.

[0061] The spacing between adjacent inclined support plates 31 is slightly larger than the diameter of the steel pipe, so as to facilitate storing more steel pipes in the material frame 3 .

[0062] At least two mounting grooves distributed along the vertical height are provided on the side wall of the material frame 3, and a load-bearing steel plate 32 is fixed on the groove wall of each mounting groove. A plurality of seesaws 33 arranged along the height of the material frame 3 are rotatably connected to the steel plate 32. The seesaws 33 in the plurality of mounting grooves correspond to each other at corresponding heights, and the rotating shaft of the seesaw 33 is parallel to the axial direction of the chuck 11 (that is, parallel to the axial direction of the steel pipe).

[0063] The non-counterweight section of the seesaw 33 can extend into the material frame 3, and the counterweight section of the seesaw 33 is located outside the material frame 3. The counterweight makes the side of the seesaw 33 close to the empty space in the material frame 3 tend to be upward in a free state and hidden in the installation groove, thereby not affecting the falling of the steel pipe or the use of the material frame 3 as a conventional stacking frame.

[0064] The distance between the inclined upward end of the inclined support plate 31 and the seesaw 33 in a free state is greater than the diameter of a steel pipe. The bottom of the material frame 3 is in an inclined state. The inclination direction of the bottom of the material frame 3 is consistent with the inclination direction of the inclined support plate 31. The distance between adjacent seesaws 33 is equal to the distance between adjacent inclined support plates 31. After the lower seesaw 33 is pressed down by the steel pipe and rotated, the adjacent upper seesaw 33 can be pushed to rotate by the counterweight. After the lower inclined support plate 31 is filled with steel pipes, the adjacent upper seesaw 33 is in a state that enables the steel pipe to move along the non-counterweight end of the seesaw 33 to the corresponding inclined support plate 31.

[0065] The material dropping channel 42 is located just above the gap between the inclined support plate 31 and the seesaw 33; a limit piece 34 is fixed to the outer wall of the material frame 3, and the limit piece 34 is located below the lowest seesaw 33. The limit piece 34 and the side of the seesaw 33 with a counterweight are abutted against each other in a free state, so that the non-counterweight end of the lowest seesaw 33 is located in the middle of the gap between the inclined support plate 31 and the seesaw 33 in the initial state. The lowest seesaw 33 rotates to an inclined state after being subjected to the pressure of the steel pipe, and the inclination direction is consistent with the inclination direction of the bottom of the material frame 3.

[0066] A movable roller is arranged on the bottom surface of the material frame 3 to facilitate the transfer of the material frame 3 .

[0067] A discharge port 35 is provided at the lowest end of the bottom position of the material frame 3, and a shielding plate 36 is provided on the discharge port 35. The shielding plate 36 is slidably connected to the bottom of the material frame 3 so that the discharge port 35 can be exposed or blocked by sliding. The distance between the inclined support plate 31 directly above the discharge port 35 and the adjacent wall of the material frame 3 is greater than the distance between one steel pipe, and specifically, the distance between the inclined support plate 31 and the adjacent wall of the material frame 3 can be 1.2-1.5 times the diameter of the steel pipe; so that the steel pipe can be finally discharged from the discharge port 35 after falling along the inclined support plate 31.

[0068] The width of the discharge port 35 is 2-3 times the diameter of the steel pipe, so that the steel pipe can more easily roll down to the inner wall of the material frame 3 under the tilt, while at the same time being able to avoid the problem of the vertically falling steel pipe and the inclined moving steel pipe below blocking the falling space during the falling process of the steel pipe with a relatively wide spacing, thereby ensuring that there will be no obstruction during discharge.

[0069] The counterweights on the seesaw 33 include a short counterweight 331 and a long counterweight 332. The short counterweight 331 can rotate between the rotation centers of the upper and lower seesaws 33. The short counterweight 331 is located in the mounting groove, and the long counterweight 332 is located outside the mounting groove. The short counterweight 331 and the long counterweight 332 are located on both sides of the seesaw 33, and the long counterweight 332 is installed at the ends of the seesaw 33. Under the free weight of the seesaw 33, the long counterweight 332 abuts against the outer edge of the mounting groove so that the non-counterweight end of the seesaw 33 can be located in the mounting groove. The short counterweight 331 and the long counterweight 332 can both be used to push the adjacent upper seesaw 33 to rotate (specifically, the short counterweight 331 of the lower seesaw 33 pushes the long counterweight 332 of the upper seesaw 33, the lower seesaw 33 contacts the long counterweight 332 of the upper seesaw 33, and the long counterweight 332 of the lower seesaw 33 contacts and pushes the upper seesaw 33 The long counterweight 332 makes the upper seesaw 33 rotate), the angle range of the seesaw 33 relative to the free state is greater than 90° and less than 140°. In this embodiment, the maximum rotation angle of the seesaw 33 relative to the free state can reach 129°±2°, so that after the steel pipe on the lower seesaw 33 is moved out, the upper seesaw 33 is rotated to a large enough angle under the pressure of the steel pipe to allow the upper steel pipe to move downward, so as to avoid the problem that the steel pipe on the seesaw 33 is stuck between the nearby inclined support plate 31 and the seesaw 33, and ensure that even if there is continuous discharge of steel pipes at the lower discharge port 35, the steel pipe feeding in the material frame 3 and the automatic neat arrangement of the steel pipes are not affected, so that the material frame 3 can be used as both a material receiving container and a material discharging container, and when the discharge and receiving rhythms are inconsistent, the steel pipes after laser cutting with higher efficiency can still be temporarily stored in the material frame 3.

[0070] The short counterweight 331 and the long counterweight 332 have the same cross-sectional dimensions to reduce manufacturing costs.

[0071] The feed guide assembly also includes a single-sided guide channel 43, the guide surface of the single-sided guide channel 43 faces the inside of the material frame 3, and the single-sided guide channel 43 makes the channel also trumpet-shaped. The single-sided guide channel 43 at the bottom of the drop channel 42 and the top guide channel 41 forms a situation in which the upper end cross-sectional size is the largest, the middle drop channel 42 cross-sectional size is the smallest, and the cross-sectional size of the single-sided guide channel 43 at the bottom opening is the second smallest, so as to ensure the accurate drop of the steel pipes, and automatically arrange the steel pipes neatly after the uppermost inclined support plate 31 has no corresponding seesaw 33, and it is not easy for the steel pipes to get stuck at the discharge end of the feed guide assembly.

[0072] 3. Discharging guide assembly 5 and discharging assembly 6

[0073] The discharge guiding assembly 5 includes a channel 1 51 and a channel 2 52 which are interconnected. The channel 1 51 is opposite to the discharge port 35. The channel 1 51 is larger at the top and smaller at the bottom. The maximum width of the channel 1 51 is greater than the diameter of a steel pipe, and the channel 2 52 only allows one steel pipe to pass through. The channel 1 51 of the discharge guiding assembly 5 has only one side parallel to the steel pipe as an inclined guiding surface. The inclined guiding surface makes the channel 1 51 larger at the top and smaller at the bottom. The inclined guiding surface is made of soft material, such as rubber. The discharge guiding assembly 5 also includes a rotatably mounted cam 53. The cam 53 can be pressed onto the inclined guiding surface. When the cam 53 rotates, it pushes the steel pipe in the channel 1 51 upward.

[0074] The discharge assembly 6 is located directly below the channel two 52; the discharge assembly 6 includes a conveyor belt 61 and a partition 61 fixed on the conveyor belt 61. The spacing between adjacent partitions 61 is used to place a steel pipe. After the conveyor belt 61 sends away a steel pipe, the steel pipe can only fall onto the conveyor belt 61 again when the spacing between adjacent partitions 61 is aligned with the outlet end of the channel two 52 again, completing the single arrangement of the steel pipes on the discharge assembly 6, which is convenient for the subsequent material picking robot to pick up the material.

[0075] The steel pipe production method of this embodiment is as follows:

[0076] The steel pipe workpiece cut by the laser cutting machine 1 enters the gap between the seesaw 33 and the inclined support plate 31 through the inclined surface 18—the blanking grid 2—the feed guide assembly, and falls in the gap. When the material frame 3 is empty, the steel pipe falls to the non-counterweight end of the lowest set of seesaws 33. Because the lowest seesaw 33 is initially in the middle of the gap between the inclined support plate 31 and the seesaw 33 under the action of the limiter 34, the steel pipe can be received when it falls on the lowest seesaw 33. At the same time, the steel pipe also presses the non-counterweight end of the seesaw 33 from the previous upward tilt to the tilted direction toward the bottom of the material frame 3, so that the steel pipe moves along the bottom of the material frame 3 to gradually fill the bottom of the material frame 3. When the bottom of the material frame 3 is not filled, after the steel pipe is removed from the lowest seesaw 33, the seesaw 33 returns to its original state under the counterweight to facilitate the falling of the next steel pipe.

[0077] After the bottom of the material frame 3 is filled, the adjacent upper seesaw 33 also rotates to a certain extent under the rotation trigger of the lower seesaw 33, so as to facilitate the steel pipes to gradually fill the inclined support plates 31 of this layer in the same way after falling, and so on until all the inclined support plates 31 are filled with steel pipes.

[0078] When the bending process is carried out in the later stage, the baffle 36 of the discharge port 35 is opened, the steel pipe enters the discharge guide assembly 5 from the discharge port 35, and falls between the partitions 61 of the discharge assembly 6 below, and is then sent out by the transmission belt of the discharge assembly 6. The sent workpiece is grabbed by the material picking robot and sent to the bending machine 7.

[0079] The entire embodiment realizes the design of cutting, bending and punching, which helps to improve production efficiency. And because the cutting efficiency of the laser cutting device is often higher than the bending efficiency of the bending machine 7, the material frame 3 is used to realize the temporary storage of steel pipes that cannot be bent in time; and when the laser cutting device and the bending machine 7 are both working, there is still feeding and discharging in the material frame 3; in addition, through the specific design of the seesaw 33, the steel pipe in the material frame 3 will not get stuck near the seesaw 33 side and the discharge port 35 side even if it moves.

[0080] In addition, the present embodiment realizes the adjustment of the angle and orientation of the steel pipe through the feed guide assembly, so that it can move to the feeding position of the material frame 3 along the limited channel, and with the cooperation of the inclined support plate 31, the seesaw 33, and the limiter 34, the steel pipe is automatically sorted and organized in the material frame 3. The whole process does not require human participation, and the part that requires manual organization is realized with a simple mechanical structure, which solves the current problem that the cut workpiece and waste cannot be separated after the steel pipe is cut, and realizes a more delicate separation of small-sized waste, tubular waste and cut workpiece; it also solves the problem that the fallen steel pipes after cutting are easily piled up in the material frame 3, which requires special manual processing, resulting in increased labor costs and increased safety hazards.

[0081] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A steel pipe stamping device for a motorcycle frame, comprising at least two punching machines, characterized in that: A conveyor line is set between adjacent punching machines. The conveyor line has a speed regulation function. An induction switch is installed at the discharge end of the conveyor line. When the steel pipe moves to the set position at the discharge end, the conveyor line stops moving.

2. A steel pipe forming system, characterized in that: The invention comprises the steel pipe stamping and forming device for motorcycle frame as claimed in claim 1, and further comprises a laser cutting machine, a blanking grid, a material frame, a discharge guiding assembly, a discharge assembly, a pick-up robot, a bending machine and a blanking robot, wherein the laser cutting machine is used to cut the steel pipe, the discharge end of the blanking grid is located above the material frame, the steel pipe cut by the laser cutting machine falls into the material frame along the blanking grid, the bottom surface of the material frame is inclined, a discharge port is provided at the bottom of the material frame, the discharge guiding assembly is directly opposite to the discharge port, the discharge guiding assembly comprises a channel 1 and a channel 2 which are interconnected, the channel 1 is directly opposite to the discharge port, the channel 1 is of a structure with a larger upper portion and a smaller lower portion, the maximum width of the channel 1 is greater than the diameter of one steel pipe, and the channel 2 only allows one steel pipe to pass through; the discharge assembly is located directly below the channel 2; the discharge assembly comprises a conveyor belt and a partition fixed on the conveyor belt, and the spacing between adjacent partitions is used to place one steel pipe; The pick-up robot is used to take the steel pipe off the conveyor belt and place it on the bending machine for bending; The bent workpiece is taken away by the unloading robot.

3. A steel tube forming system according to claim 2, characterized in that: The channel 1 of the discharge guide assembly has only one side parallel to the steel pipe as an inclined guide surface, which makes the channel 1 larger at the top and smaller at the bottom. The inclined guide surface is made of soft material. The discharge guide assembly also includes a rotatably mounted cam that can be pressed against the inclined guide surface.

4. A steel tube forming system according to claim 2, characterized in that: The material frame is equipped with a plurality of inclined support plates distributed along the height of the material frame, the spacing between adjacent inclined support plates is greater than the diameter of the steel pipe, a plurality of seesaws for receiving materials are installed on the side wall of the material frame, the seesaws are rotatably connected to the wall of the material frame, and a counterweight is installed on the part of the seesaw facing the outside of the material frame, and the counterweight makes the side of the seesaw close to the empty space in the material frame tend to be upward in a free state without affecting the falling of the steel pipe; The distance between the inclined upward end of the inclined support plate and the seesaw in a free state is greater than the diameter of a steel pipe, the bottom of the material frame is in an inclined state, the inclination direction of the bottom of the material frame is consistent with the inclination direction of the inclined support plate, the distance between adjacent seesaws is equal to the distance between adjacent inclined support plates, and the lower seesaw is pressed down by the steel pipe and rotated, and the adjacent upper seesaw can be pushed to rotate by the counterweight. After the lower inclined support plate is filled with steel pipes, the adjacent upper seesaw is in a state that enables the steel pipe to move along the non-counterweight end of the seesaw to the corresponding inclined support plate; A limiting piece is fixed on the material frame, and the limiting piece is located below the lowest seesaw. The limiting piece and the side of the seesaw with a counterweight are counteracted in a free state, so that the non-counterweight end of the lowest seesaw is located in the middle of the gap between the inclined support plate and the seesaw in an initial state. The lowest seesaw rotates to an inclined state after being subjected to the pressure of the steel pipe, and the inclination direction is consistent with the inclination direction of the bottom of the material frame.

5. A steel tube forming system according to claim 4, characterized in that: It also includes a feed guide assembly, which is provided with a guide channel and a blanking channel that are interconnected, the guide channel has a trumpet opening, the cross-section of the guide channel is larger than the cross-section of the blanking channel, the width of the blanking channel is 1-1.5 times the width of the steel pipe, the blanking channel is located directly above the gap between the inclined support plate and the seesaw, and the steel pipe moves from the blanking grid into the guide channel.

6. A steel tube forming system according to claim 5, characterized in that: The feed guide assembly also includes a single-sided guide channel, the guide surface of the single-sided guide channel faces the inside of the material frame, the blanking channel and the single-sided guide channel at the bottom of the top guide channel form a situation where the uppermost is the largest and the middle is the smallest, and the lower opening size is the second largest.

7. A steel tube forming system according to any one of claims 5-6, characterized in that: The counterweights on the seesaw include a short counterweight and a long counterweight. The short counterweight can be rotated between the rotation centers of the upper and lower seesaws. The long counterweight is located outside the material frame. The material frame is provided with a mounting groove for the seesaw. Under the free weight of the seesaw, the long counterweight is abutted against the outer edge of the mounting groove so that the non-counterweight end of the seesaw can be located in the mounting groove. Both the short counterweight and the long counterweight can be used to push the adjacent upper seesaw to rotate. The angle range in which the seesaw can rotate relative to the free state is greater than 90° and less than 140°, so that after the steel pipe on the lower seesaw is moved out, the upper seesaw can rotate to a sufficiently large angle under the pressure of the steel pipe to allow the upper steel pipe to move downward.

8. A steel tube forming system according to any one of claims 4 to 6, characterized in that: The inclined support plate is detachably connected to the material frame.

9. A steel tube forming system according to any one of claims 2 to 6, characterized in that: The discharging port is provided with a shielding plate, which can expose or block the discharging port, and the distance between the inclined support plate directly above the discharging port and the adjacent material frame wall is greater than the distance between one steel pipe.

10. A steel pipe forming system according to any one of claims 2 to 6, characterized in that: The laser cutting machine is provided with an inclined surface, which is located in the falling direction of the steel pipe after being cut, and the inclined surface is inclined downward toward the material frame, the blanking grid is horizontal, and the blanking grid is connected to the inclined surface. The bell mouth of the feed guide assembly is composed of enclosed front, rear, left and right side panels, one of which is located directly below the end of the blanking grid, and the remaining side panels are higher than the blanking grid.

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