Bar cutting machine and method for continued cutting of bar tail

Abstract

The application provides a bar cutting machine and a method for continuously cutting bar tail, and belongs to the technical field of bar cutting. It comprises a rack and a bar feeding device arranged on one side of the rack. The rack is provided with a feeding clamping assembly and a cutting clamping assembly. The feeding clamping assembly can receive and fix the bar fed by the bar feeding device. The cutting clamping assembly is provided with a cutting assembly above and a receiving device below. The rack and the feeding clamping assembly are provided with a bar conveying mechanism capable of driving the feeding clamping assembly to approach or move away from the cutting clamping assembly for conveying the bar. The cutting clamping assembly can realize at least light clamping and heavy clamping. When the bar conveying mechanism drives the feeding clamping assembly to forwardly convey the bar, the cutting clamping assembly is switched to the light clamping, and the bar can continue to be conveyed forwardly against the force of the cutting clamping assembly. When the bar conveying mechanism stops, the cutting clamping assembly is switched to the heavy clamping to facilitate the cutting assembly to complete the cutting.

Description

Technical Field

[0001] This invention belongs to the field of bar cutting technology, and relates to a bar cutting machine and a method for further cutting bar tail material. Background Technology

[0002] Bar cutting equipment is specifically designed for cutting metal bars, enabling precise and efficient cutting to meet the needs of various industries. When cutting bars, the two ends of the bar are often fixed to allow the cutting mechanism to cut the head end. The bar is then conveyed by a conveying mechanism for continuous cutting. However, in existing technologies, due to interference between the various mechanisms within the bar cutting equipment, when only the tail section remains, the conveying mechanism cannot continue conveying it. This results in the tail section not being completely cut, leading to waste, increased production costs, and reduced economic efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a bar cutting machine.

[0004] Another object of the present invention is to provide a method for further cutting the tail material of a bar cutting machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A bar cutting machine includes a frame and a bar feeding device disposed on one side of the frame. A feeding clamping assembly is located on the frame near the bar feeding device, capable of receiving and securing the bar material fed by the bar feeding device. A cutting clamping assembly is located on the frame away from the bar feeding device. A cutting assembly is located above the cutting clamping assembly and below the cutting assembly. A bar conveying mechanism is provided between the frame and the feeding clamping assembly, capable of driving the feeding clamping assembly to move closer to or further away from the cutting clamping assembly for conveying the bar material. The cutting clamping assembly can achieve at least a light clamping mode and a heavy clamping mode. When the bar conveying mechanism drives the feeding clamping assembly to convey the bar material forward, the cutting clamping assembly switches to a light clamping mode, allowing the bar material to continue forward despite the force of the cutting clamping assembly. When the bar conveying mechanism stops, the cutting clamping assembly switches to a heavy clamping mode to facilitate cutting by the cutting assembly.

[0007] During the forward conveying of the bar stock, the cutting clamping assembly switches to a light clamping mode. At this time, the bar stock can overcome the force of the cutting clamping assembly and continue to be conveyed forward in the cutting clamping assembly. When the bar stock is conveyed to the cutting position, the bar stock conveying mechanism stops, and the cutting clamping assembly switches to a heavy clamping mode to facilitate the cutting assembly to cut the bar stock. When the bar stock is conveyed and cut, the cutting clamping assembly repeatedly switches between the light clamping mode and the heavy clamping mode to adapt to the conveying and cutting of the bar stock respectively.

[0008] In the aforementioned bar cutting machine, the feeding clamping assembly can at least achieve light clamping and heavy clamping conditions.

[0009] In the above-mentioned bar cutting machine, when the bar conveying mechanism drives the feeding clamping assembly to convey the bar forward, the feeding clamping assembly is in heavy clamping condition.

[0010] When the bar stock conveying mechanism drives the feeding clamping assembly to convey a new bar stock forward so that the new bar stock comes into contact with the tail material on the cutting clamping assembly, the feeding clamping assembly switches to a light clamping mode and switches back to a heavy clamping mode after the new bar stock and the tail material come into contact. During the forward conveying of the new bar stock and contact with the tail material, the cutting clamping assembly is in a heavy clamping mode to prevent the tail material from shifting during the contact process. After the contact is completed, the cutting clamping assembly returns to the switching between heavy clamping mode and light clamping mode. That is, when the tail material is pushed by the new bar stock for conveying, the cutting clamping assembly is in a light clamping mode, and when the tail material is being cut, the cutting clamping assembly is in a heavy clamping mode.

[0011] When the bar stock conveying mechanism drives the feeding clamping assembly to convey the bar stock forward, the feeding clamping assembly is in heavy clamping mode, and the bar stock is firmly fixed to facilitate its conveying. When the bar stock in the cutting clamping assembly is cut down to the tail material, the bar stock feeding device feeds a new bar stock to the feeding clamping assembly. At this time, the feeding clamping assembly switches to light clamping mode, and the cutting clamping assembly switches to heavy clamping mode. The bar stock conveying mechanism drives the feeding clamping assembly to convey the new bar stock forward. When the new bar stock comes into contact with the tail material on the cutting clamping assembly, the bar stock conveying mechanism continues to convey the bar stock forward for a certain distance. Since the feeding clamping assembly is in light clamping mode and the cutting clamping assembly is in heavy clamping mode, the bar stock conveying mechanism drives the feeding clamping assembly to overcome the friction with the bar stock and slide on the bar stock, so that pressure is generated between the new bar stock and the tail material to eliminate the gap between the new bar stock and the tail material, thus completing the contact between the new bar stock and the tail material, that is, the end-to-end connection of the new bar stock and the tail material. The tailings are propelled by the new bar stock for continued conveying and cutting, maximizing the utilization of raw materials and minimizing waste. Efficient utilization of tailings can effectively reduce production costs and improve economic efficiency.

[0012] In the above-mentioned bar cutting machine, the cutting clamping assembly includes a cutting fixing seat, a cutting limiting seat is provided on the cutting fixing seat, a cutting limiting groove adapted to the bar is formed between the cutting fixing seat and the cutting limiting seat, a force multiplier driver is provided on the cutting fixing seat, and the output end of the force multiplier driver is connected to a bar top block. The force multiplier driver can drive the bar top block to loosely or tightly press the bar into the cutting limiting groove to achieve light clamping and heavy clamping conditions respectively.

[0013] The cutting limit groove is used to support the head end of the bar stock. The force multiplier can drive the bar stock top block to loosely press the bar stock into the cutting limit groove to achieve the light clamping condition of the cutting clamping assembly; the force multiplier can drive the bar stock top block to tightly press the bar stock into the cutting limit groove to achieve the heavy clamping condition of the cutting clamping assembly.

[0014] In the aforementioned bar cutting machine, the force multiplier driver includes a force multiplier cylinder, which comprises a first cylinder and a second cylinder. The force of the first cylinder is greater than that of the second cylinder. The second cylinder is equipped with a reversing valve. When the first cylinder and the second cylinder act in the same direction, the combined force of the first cylinder and the second cylinder can press the bar tightly against the cutting limit groove through the bar top block to achieve a heavy clamping condition. When the second cylinder reverses its direction through the reversing valve and acts in the opposite direction to the force of the first cylinder, the combined force of the first cylinder and the second cylinder can loosely press the bar against the cutting limit groove through the bar top block to achieve a light clamping condition.

[0015] The force multiplier actuator is a force multiplier cylinder, which includes a first cylinder and a second cylinder. When the first cylinder and the second cylinder act in the same direction, the combined force of the first cylinder and the second cylinder can press the bar tightly against the cutting limit groove through the bar top block to achieve the heavy clamping condition of the cutting clamping assembly. When the second cylinder acts in the opposite direction to the first cylinder, the combined force of the first cylinder and the second cylinder can loosely press the bar against the cutting limit groove through the bar top block to achieve the light clamping condition of the cutting clamping assembly.

[0016] In the aforementioned bar cutting machine, the feeding clamping assembly includes a feeding fixed seat, on which a feeding limiting seat is provided. A feeding limiting groove adapted to the bar is formed between the feeding fixed seat and the feeding limiting seat. The feeding fixed seat is provided with a light clamping driver and a heavy clamping driver. The output ends of the light clamping driver and the heavy clamping driver are respectively connected to a light clamping top block and a heavy clamping top block. The light clamping driver can drive the light clamping top block to loosely press the bar against the feeding limiting groove to achieve a light clamping condition. The heavy clamping driver can drive the heavy clamping top block to tightly press the bar against the feeding limiting groove to achieve a heavy clamping condition.

[0017] The feeding limit groove is used to support the bar stock. Only during the forward feeding of the new bar stock and its contact with the tail material on the cutting clamping assembly, the light clamp driver drives the light clamp top block to loosely press the bar stock against the feeding limit groove to achieve the light clamping condition of the feeding clamping assembly. After the new bar stock and the tail material have contacted each other, the light clamp driver drives the light clamp top block to reset, and the heavy clamp driver drives the heavy clamp top block to tightly press the new bar stock against the feeding limit groove to achieve the heavy clamping condition of the feeding clamping assembly.

[0018] In the aforementioned bar cutting machine, the bar conveying mechanism includes a movable seat located at the bottom of the feeding fixed seat. The frame is mounted with displacement screws distributed along the moving direction of the feeding clamping assembly. The displacement screws are connected to displacement drivers. The screw nut of the displacement screws is connected to the bottom of the movable seat. The mounting frame is provided with guide slides on both sides of the displacement screws. The bottom of the movable seat is provided with a guide slider that slides with the guide slides.

[0019] The shifting driver can drive the shifting screw to rotate. Through the screw nut and the moving seat on the shifting screw, the feeding fixed seat can be driven to move back and forth towards or away from the cutting clamping assembly to continuously feed the bar stock. The guide slider at the bottom of the moving seat slides in cooperation with the guide slide rod on the mounting frame, which can provide high-precision positioning and guide the moving seat to maintain the accuracy and stability of the moving seat.

[0020] A method for further cutting bar stock tail material in a bar cutting machine includes the following steps:

[0021] S1. After the system automatically identifies, calculates, or manually controls the tail material cutting program, the bar feeding device feeds the new bar material to the feeding clamping assembly. The feeding clamping assembly switches to light clamping mode, the cutting clamping assembly switches to heavy clamping mode, and the bar material conveying mechanism drives the feeding clamping assembly to convey the new bar material forward.

[0022] S2. After the bar stock conveying mechanism conveys the newly loaded bar stock to abut against the tail stock on the cutting clamping assembly, it continues to convey it forward for a certain distance. Since the feeding clamping assembly is in a light clamping condition and the cutting clamping assembly is in a heavy clamping condition at this time, the bar stock conveying mechanism drives the feeding clamping assembly to overcome the friction with the bar stock and slide on the bar stock, so that pressure is generated between the newly loaded bar stock and the tail stock to eliminate the gap between the newly loaded bar stock and the tail stock. Thus, the end-to-end connection of the new bar stock and the tail stock is completed.

[0023] S3. After the first and last connections are completed, the feeding clamping component switches to heavy clamping mode, and the bar conveying mechanism intermittently drives the feeding clamping component to convey the newly loaded bar forward. After the bar is in place, the cutting clamping component switches to heavy clamping mode, and the cutting component starts cutting. After the cutting is completed, the cutting clamping component switches to light clamping mode, and the bar conveying mechanism feeds the bar forward. This process is repeated.

[0024] S4. When the system calculates or detects that the remaining tail material is insufficient to cut a workpiece, it switches to the tail material recycling program. At this time, the cutting clamping component switches to light clamping mode, and the bar material conveying mechanism drives the feeding clamping component to convey the newly loaded bar material forward a certain distance to push the tail material to the tail material collection station and then return to the cutting clamping component position to start cutting the new bar material until the new bar material is cut again until only tail material remains. Then, it returns to S to start the tail material cutting program.

[0025] In the above-mentioned method for continuing to cut the tail material of the bar cutting machine, in step S1, the system calculates the remaining tail material length based on the set bar length, cutting length and cutting number to determine whether to enter the tail material cutting program.

[0026] In the above-mentioned method for continuing to cut the tail material of the bar cutting machine, in step S4, the system calculates that the remaining tail material is insufficient to complete one cut based on the set bar length, cutting length and cutting number, and then switches to the tail material recycling program.

[0027] Compared with existing technologies, the advantages of this invention are: 1. When the bar stock is cut down to the tail material, the tail material can continue to move towards the cutting assembly to complete the further cutting of the tail material. By continuing to cut the tail material, the raw materials can be utilized to the maximum extent, waste can be reduced, and efficient use of the tail material can effectively reduce production costs and improve economic efficiency. 2. When the new bar stock and the tail material come into contact, the gap between them caused by burrs, unevenness of the bar stock, or other factors can be eliminated. 3. The bar stock is fixed and stable, which can prevent the bar stock from deviating from the preset path due to uneven force or vibration during the cutting process, which helps to reduce cutting errors and improve product quality. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure provided by the present invention;

[0029] Figure 2 This is a structural diagram of the frame;

[0030] Figure 3 This is a structural diagram of the feeding clamping assembly;

[0031] Figure 4 This is a structural schematic diagram of the cutting clamping assembly;

[0032] Figure 5 This is a schematic diagram of the force multiplier actuator.

[0033] In the diagram, 1 is the frame, 2 is the bar feeding device, 3 is the feeding clamping assembly, 4 is the cutting clamping assembly, 5 is the cutting assembly, 6 is the bar conveying mechanism, 7 is the cutting limit seat, 8 is the cutting groove, 9 is the receiving device, 10 is the cutting fixing seat, 11 is the cutting limit groove, 12 is the force multiplier driver, 13 is the bar top block, 14 is the force multiplier cylinder, 15 is the head end detection device, 16 is the first positioning groove, 17 is the first pressure sensor, 18 is the second positioning groove, 19 is the second pressure sensor, 20 is the feeding fixing seat, 21 is the feeding limit seat, 22 is the feeding limit groove, 23 is the light clamp driver, 24 is the heavy clamp top block, 26 is the light clamp top block, 28 is the moving seat, 29 is the mounting bracket, 30 is the shifting screw, 31 is the shifting driver, 32 is the guide slide bar, 33 is the guide slider, 34 is the bar, and 35 is the heavy clamp driver. Detailed Implementation

[0034] like Figures 1-5 As shown, a bar cutting machine includes a frame 1 and a bar feeding device 2 disposed on one side of the frame 1. A feeding clamping assembly 3 is provided on the frame 1 near the bar feeding device 2, capable of receiving and fixing the bar 34 fed by the bar feeding device 2. A cutting clamping assembly 4 is provided on the frame 1 away from the bar feeding device 2. A cutting assembly 5 for cutting is provided above the cutting clamping assembly 4, and a receiving device 9 is provided below the cutting assembly 5. A connection is provided between the frame 1 and the feeding clamping assembly 3. There is a bar conveying mechanism 6 that can drive the feeding clamping assembly 3 to approach or move away from the cutting clamping assembly 4 to convey the bar stock 34. The cutting clamping assembly 4 can achieve at least a light clamping condition and a heavy clamping condition. When the bar conveying mechanism 6 drives the feeding clamping assembly 3 to convey the bar stock forward, the cutting clamping assembly 4 switches to a light clamping condition, and the bar stock 34 can overcome the force of the cutting clamping assembly 4 to continue to be conveyed forward. When the bar conveying mechanism 6 stops, the cutting clamping assembly 4 switches to a heavy clamping condition to facilitate the cutting assembly 5 to complete the cutting.

[0035] In this invention, the feeding clamping assembly 3 can receive and fix the bar stock 34 fed by the bar stock feeding device 2. Then, the bar stock conveying mechanism 6 drives the feeding clamping assembly 3 to approach the cutting clamping assembly 4 to convey the bar stock 34 forward. During the forward conveying of the bar stock 34, the cutting clamping assembly 4 switches to a light clamping condition. At this time, the bar stock 34 can overcome the force of the cutting clamping assembly 4 and continue to be conveyed forward in the cutting clamping assembly 4. When the bar stock 34 is conveyed to the cutting position, the bar stock conveying mechanism 6 stops, and the cutting clamping assembly 4 switches to a heavy clamping condition to facilitate the cutting assembly 5 to cut the bar stock 34. When the bar stock 34 is conveyed and cut, the cutting clamping assembly 4 repeatedly switches between the light clamping condition and the heavy clamping condition to adapt to the conveying and cutting of the bar stock 34 respectively.

[0036] Specifically, combining Figures 1-4 As shown, the feeding clamping assembly 3 can achieve at least light clamping and heavy clamping conditions.

[0037] When the bar conveying mechanism 6 drives the feeding clamping assembly 3 to convey the bar 34 forward, the feeding clamping assembly 3 is in heavy clamping condition.

[0038] When the bar stock conveying mechanism 6 drives the feeding clamping assembly 3 to convey the new bar stock 34 forward so that the new bar stock 34 comes into contact with the tail material on the cutting clamping assembly 4, the feeding clamping assembly 3 switches to a light clamping mode and switches back to a heavy clamping mode after the new bar stock 34 comes into contact with the tail material. During the process of the new bar stock 34 being conveyed forward and coming into contact with the tail material, the cutting clamping assembly 4 is in a heavy clamping mode to prevent the tail material from shifting during the contact process. After the contact is completed, the cutting clamping assembly 4 returns to the switching between heavy clamping mode and light clamping mode. That is, when the tail material is pushed by the new bar stock 34 for conveying, the cutting clamping assembly 4 is in a light clamping mode, and when the tail material is being cut, the cutting clamping assembly 4 is in a heavy clamping mode.

[0039] When the bar stock conveying mechanism 6 drives the feeding clamping assembly 3 to convey the bar stock 34 forward, the feeding clamping assembly 3 is in heavy clamping mode, and the bar stock 34 is firmly fixed to facilitate its conveying. When the bar stock 34 in the cutting clamping assembly 4 is cut down to the tail material, the bar stock feeding device 2 feeds a new bar stock 34 to the feeding clamping assembly 3. At this time, the feeding clamping assembly 3 switches to light clamping mode, and the cutting clamping assembly 4 switches to heavy clamping mode. The bar stock conveying mechanism 6 drives the feeding clamping assembly 3 to convey the newly loaded bar stock 34 forward. After the material 34 comes into contact with the tail material on the cutting clamping assembly 4, the bar stock conveying mechanism 6 continues to convey it forward a certain distance. Since the feeding clamping assembly 3 is in a light clamping condition and the cutting clamping assembly 4 is in a heavy clamping condition, the bar stock conveying mechanism 6 drives the feeding clamping assembly 3 to overcome the friction with the bar stock 34 and slide on the bar stock 34. This creates pressure between the newly added bar stock 34 and the tail material to eliminate the gap between them, thus completing the contact between the new bar stock 34 and the tail material, i.e., the end-to-end connection of the new bar stock 34 and the tail material. The tail material is pushed by the new bar stock 34 to continue conveying and cutting, which can maximize the utilization of raw materials and reduce waste. Efficient utilization of tail material can effectively reduce production costs and improve economic benefits.

[0040] The feeding clamping assembly 3 is in a light clamping condition only when receiving the new bar stock 34 and during the forward conveying of the new bar stock 34 to abut against the tail stock. This is to eliminate the gap between the new bar stock 34 and the tail stock. After the new bar stock 34 abuts against the tail stock, it switches back to a heavy clamping condition. During the forward conveying of the new bar stock 34 to abut against the tail stock, the cutting clamping assembly 4 is in a heavy clamping condition to prevent the tail stock from shifting during the abutment. After the abutment is completed, the cutting clamping assembly 4 returns to the switching between heavy clamping and light clamping conditions to adapt to the conveying and cutting of the tail stock respectively. That is, when the tail stock is conveyed by being pushed by the new bar stock 34, the cutting clamping assembly 4 is in a light clamping condition; when the tail stock is being cut, the cutting clamping assembly 4 is in a heavy clamping condition.

[0041] Specifically, combining Figures 2-5 As shown, the cutting clamping assembly 4 includes a cutting fixing seat 10, a cutting limiting seat 7 on the cutting fixing seat 10, a cutting limiting groove 11 adapted to the bar stock 34 is formed between the cutting fixing seat 10 and the cutting limiting seat 7, a force multiplier driver 12 is provided on the cutting fixing seat 10, and the output end of the force multiplier driver 12 is connected to the bar stock top block 13. The force multiplier driver 12 can drive the bar stock top block 13 to loosely or tightly press the bar stock 34 into the cutting limiting groove 11 to realize light clamping and heavy clamping conditions respectively.

[0042] The cutting limiting groove 11 is used to support the head end of the bar stock 34. The force multiplier driver 12 can drive the bar stock top block 13 to loosely press the bar stock 34 against the cutting limiting groove 11 to achieve the light clamping condition of the cutting clamping assembly 4. The force multiplier driver 12 can also drive the bar stock top block 13 to tightly press the bar stock 34 against the cutting limiting groove 11 to achieve the heavy clamping condition of the cutting clamping assembly 4.

[0043] Specifically, combining Figures 2-5 As shown, the force multiplier actuator 12 includes a force multiplier cylinder 14, which comprises a first cylinder and a second cylinder. The force of the first cylinder is greater than that of the second cylinder. The second cylinder is equipped with a reversing valve. When the first cylinder and the second cylinder act in the same direction, the combined force of the first cylinder and the second cylinder can press the bar stock 34 tightly against the cutting limit groove 11 through the bar stock top block 13 to achieve a heavy clamping condition. When the second cylinder reverses its direction through the reversing valve and acts in the opposite direction to the force of the first cylinder, the combined force of the first cylinder and the second cylinder can loosely press the bar stock 34 against the cutting limit groove 11 through the bar stock top block 13 to achieve a light clamping condition.

[0044] The force multiplier actuator 12 is a force multiplier cylinder 14, which includes a first cylinder and a second cylinder. When the first cylinder and the second cylinder act in the same direction, the combined force of the first cylinder and the second cylinder can press the bar 34 tightly against the cutting limit groove 11 through the bar top block 13 to achieve the heavy clamping condition of the cutting clamping assembly 4. When the second cylinder acts in the opposite direction to the first cylinder, the combined force of the first cylinder and the second cylinder can loosely press the bar 34 against the cutting limit groove 11 through the bar top block 13 to achieve the light clamping condition of the cutting clamping assembly 4.

[0045] Specifically, combining Figures 2-4As shown, the feeding clamping assembly 3 includes a feeding fixing seat 20, a feeding limiting seat 21 on the feeding fixing seat 20, and a feeding limiting groove 22 adapted to the bar stock 34 is formed between the feeding fixing seat 20 and the feeding limiting seat 21. The feeding fixing seat 20 is provided with a light clamping driver 23 and a heavy clamping driver 35. The output ends of the light clamping driver 23 and the heavy clamping driver 35 are respectively connected to a light clamping top block 26 and a heavy clamping top block 24. The light clamping driver 23 can drive the light clamping top block 26 to loosely press the bar stock 34 into the feeding limiting groove 22 to achieve a light clamping condition. The heavy clamping driver 35 can drive the heavy clamping top block 24 to tightly press the bar stock 34 into the feeding limiting groove 22 to achieve a heavy clamping condition.

[0046] The feeding limit groove 22 is used to support the bar stock 34. Only during the forward feeding of the new bar stock 34 and its contact with the tail material on the cutting clamping assembly 4, the light clamp driver 23 drives the light clamp top block 26 to loosely press the bar stock 34 into the feeding limit groove 22 to achieve the light clamping condition of the feeding clamping assembly 3. After the new bar stock 34 and the tail material are in contact, the light clamp driver 23 drives the light clamp top block 26 to reset, and the heavy clamp driver 35 drives the heavy clamp top block 24 to press the new bar stock 34 tightly into the feeding limit groove 22 to achieve the heavy clamping condition of the feeding clamping assembly 3.

[0047] Specifically, combining Figures 1-4 As shown, the bar stock conveying mechanism 6 includes a movable seat 28 disposed at the bottom of the feeding fixed seat 20. The frame 1 is provided with a displacement screw 30 distributed along the moving direction of the feeding clamping assembly 3 via a mounting frame 29. The displacement screw 30 is connected to a displacement driver 31. The screw nut of the displacement screw 30 is connected to the bottom of the movable seat 28. The mounting frame 29 is provided with guide slides 32 on both sides of the displacement screw 30. The bottom of the movable seat 28 is provided with a guide slider 33 that slides with the guide slides 32.

[0048] The shifting driver 31 can drive the shifting screw 30 to rotate. Through the screw nut on the shifting screw 30 and the moving seat 28, it can drive the feeding fixed seat 20 to move back and forth towards or away from the cutting clamping assembly 4 to continuously feed the bar stock 34. The guide slider 33 at the bottom of the moving seat 28 slides with the guide slide rod 32 on the mounting frame 29, which can provide high-precision positioning and guide the movement of the moving seat 28, maintaining the accuracy and stability of the movement of the moving seat 28.

[0049] Preferably, combined with Figures 3-5 As shown, the cutting limiting groove 11 formed between the cutting fixing seat 10 and the cutting limiting seat 7 is at a right angle, and the bar top block 13 is gradually inclined downward from the rear end to the front end.

[0050] The cutting limiting groove 11 serves to position and support the bar stock 34. The cutting limiting groove 11 is right-angled. When the bar stock 34 is pressed by the bar stock top block 13, it can be evenly stressed within the cutting limiting groove 11. Furthermore, the bar stock top block 13 is gradually inclined downward from the rear end to the front end. The inclined bar stock top block 13 can more effectively fix the bar stock 34 and prevent it from deviating from the preset path due to uneven stress or vibration during the cutting process. This improved stability helps to reduce cutting errors and improve product quality.

[0051] Specifically, combining Figures 2-5 As shown, a head end detection device 15 for detecting the head end of the bar stock 34 is provided between the cutting fixing seat 10 and the cutting limiting seat 7. The head end detection device 15 includes a first positioning groove 16 provided on the cutting fixing seat 10, and a first pressure sensor 17 is provided in the first positioning groove 16. A second positioning groove 18 is provided on the cutting limiting seat 7, and a second pressure sensor 19 is provided in the second positioning groove 18. When there is a bar stock 34 on the cutting fixing seat 10, the bar stock top block 13 presses the bar stock 34 against the cutting limiting groove 11, and the bar stock 34 abuts against the first pressure sensor 17 and the second pressure sensor 19 respectively.

[0052] The multiplier cylinder 14 can drive the bar stock top block 13 to move closer to or further away from the cutting limit groove 11. When there is a bar stock 34 on the cutting fixture 10, the bar stock top block 13 can press the bar stock 34 into the cutting limit groove 11. The bar stock 34 abuts against the first pressure sensor 17 and the second pressure sensor 19 respectively. The first pressure sensor 17 and the second pressure sensor 19 can detect the pressure from the bar stock 34 and send a bar stock arrival signal. If there is no bar stock 34 on the cutting fixture 10, the bar stock top block 13 abuts against the cutting fixture 10 and the cutting limit seat 7 respectively. At this time, the first pressure sensor 17 and the second pressure sensor 19 cannot detect the pressure from the bar stock 34 and send a bar stock not in place signal.

[0053] Preferably, combined with Figure 3 and Figure 5 As shown, the first pressure sensor 17 is horizontally positioned with an angle of 90 degrees between it and the bar stock, and the second pressure sensor 19 is vertically positioned with an angle of 90 degrees between it and the bar stock 34.

[0054] The angle between the bar stock 34 and the first pressure sensor 17 and the second pressure sensor 19 is 90 degrees, which ensures that the first pressure sensor 17 and the second pressure sensor 19 are perpendicular to the surface of the bar stock 34. This helps to reduce measurement errors caused by angular deviation, and the perpendicular angle helps to stabilize the contact between the first pressure sensor 17 and the second pressure sensor 19 and the bar stock, reducing measurement fluctuations caused by unstable contact, thereby improving measurement stability.

[0055] A method for further cutting bar stock tail material in a bar cutting machine includes the following steps:

[0056] S1. After the system automatically identifies, calculates, or manually controls the tail material cutting program, the bar feeding device 2 feeds the new bar 34 to the feeding clamping assembly 3. The feeding clamping assembly 3 switches to light clamping mode, the cutting clamping assembly 4 switches to heavy clamping mode, and the bar conveying mechanism 6 drives the feeding clamping assembly 3 to convey the newly fed bar 34 forward.

[0057] In this invention, all mechanisms of the bar cutting machine are controlled by a PCL system.

[0058] S2. After the newly loaded bar stock 34 is conveyed by the bar stock conveying mechanism 6 and comes into contact with the tail material on the cutting clamping assembly 4, it continues to convey forward for a certain distance. Since the feeding clamping assembly 3 is in light clamping condition and the cutting clamping assembly 4 is in heavy clamping condition, the bar stock conveying mechanism 6 drives the feeding clamping assembly 3 to overcome the friction with the bar stock 34 and slide on the bar stock 34, so that pressure is generated between the newly loaded bar stock 34 and the tail material to eliminate the gap between the newly loaded bar stock 34 and the tail material. Thus, the end-to-end connection of the new bar stock 34 and the tail material is completed.

[0059] After the newly loaded bar stock 34 comes into contact with the tail stock on the cutting clamping assembly 4, the bar stock conveying mechanism 6 continues to convey it forward a certain distance. Since the feeding clamping assembly 3 is in a light clamping condition and the cutting clamping assembly 4 is in a heavy clamping condition, the bar stock conveying mechanism 6 drives the feeding clamping assembly 3 to overcome the friction with the bar stock 34 and slide on the bar stock 34. This creates pressure between the newly loaded bar stock 34 and the tail stock to eliminate gaps caused by burrs, unevenness, or other factors. During this process, the cutting clamping assembly 4 is in a heavy clamping condition to prevent the tail stock from shifting during the contact process.

[0060] S3. After the first and last connections are completed, the feeding clamping assembly 3 switches to heavy clamping mode, and the bar conveying mechanism 6 intermittently drives the feeding clamping assembly 3 to convey the newly loaded bar 34 forward. After the material is in place, the cutting clamping assembly 4 switches to heavy clamping mode, and the cutting assembly 5 starts cutting. After the cutting is completed, the cutting clamping assembly 4 switches to light clamping mode, and the bar conveying mechanism 6 feeds forward. This process is repeated.

[0061] The feeding clamping assembly 3 is only in a light clamping condition when receiving the new bar stock 34 and during the forward conveying of the new bar stock 34 and its contact with the tail material, in order to eliminate the gap between the new bar stock 34 and the tail material. After the new bar stock 34 and the tail material have contacted each other, it switches back to a heavy clamping condition.

[0062] After the new bar stock 34 comes into contact with the tail stock, the cutting clamping assembly 4 switches between heavy clamping and light clamping modes to adapt to the conveying and cutting of the tail stock respectively. That is, when the tail stock is conveyed by the new bar stock 34, the cutting clamping assembly 4 is in light clamping mode, and when the tail stock is being cut, the cutting clamping assembly 4 is in heavy clamping mode.

[0063] S4. When the system calculates or detects that the remaining tail material is insufficient to cut a workpiece, it switches to the tail material recycling program. At this time, the cutting clamping component 4 switches to light clamping mode, and the bar material conveying mechanism 6 drives the feeding clamping component 3 to convey the newly loaded bar material 34 forward a certain distance to push the tail material to the tail material collection station and then return to the position of the cutting clamping component 4 to start cutting the new bar material 34. This continues until the new bar material 34 is cut again until only tail material remains, and then it returns to S1 to start the tail material cutting program.

[0064] In this invention, the cutting clamping assembly 4 includes a cutting fixing seat 10, a cutting limiting seat 7 on the cutting fixing seat 10, and a cutting limiting groove 11 adapted to the bar stock 34 between the cutting fixing seat 10 and the cutting limiting seat 7. The cutting fixing seat 10 is provided with a force-multiplying cylinder 14, and the output end of the force-multiplying cylinder 14 is connected to a bar stock top block 13. The force-multiplying cylinder 14 includes a first cylinder and a second cylinder. When the first cylinder and the second cylinder act in the same direction, the overall force of the first cylinder and the second cylinder can press the bar stock 34 tightly against the cutting limiting groove 11 through the bar stock top block 13 to achieve the heavy clamping condition of the cutting clamping assembly 4. When the second cylinder acts in the opposite direction to the first cylinder, the overall force of the first cylinder and the second cylinder can loosely press the bar stock 34 against the cutting limiting groove 11 through the bar stock top block 13 to achieve the light clamping condition of the cutting clamping assembly 4.

[0065] The feeding clamping assembly 3 includes a feeding fixing seat 20, a feeding limiting seat 21 on the feeding fixing seat 20, and a feeding limiting groove 22 adapted to the bar stock 34 is formed between the feeding fixing seat 20 and the feeding limiting seat 21. The feeding fixing seat 20 is provided with a light clamping driver 23 and a heavy clamping driver 35. The output ends of the light clamping driver 23 and the heavy clamping driver 35 are respectively connected to a light clamping top block 26 and a heavy clamping top block 24. The light clamping driver 23 can drive the light clamping top block 26 to loosely press the bar stock 34 into the feeding limiting groove 22 to achieve a light clamping condition. The heavy clamping driver 35 can drive the heavy clamping top block 24 to tightly press the bar stock 34 into the feeding limiting groove 22 to achieve a heavy clamping condition.

[0066] Specifically, in step S1, the system calculates the remaining tail material length based on the set bar length 34, cutting length, and number of cutting operations to determine whether to enter the tail material cutting process.

[0067] Specifically, in step S4, the system calculates that the remaining tailings are insufficient to complete one cut based on the set bar length 34, cutting length, and number of cuts, and then switches to the tailings recycling program.

[0068] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0069] Although this document frequently uses terms such as frame 1, bar stock feeding device 2, feeding clamping assembly 3, cutting clamping assembly 4, cutting assembly 5, bar stock conveying mechanism 6, cutting limit seat 7, cutting groove 8, receiving device 9, cutting fixing seat 10, cutting limit groove 11, force multiplier driver 12, bar stock top block 13, force multiplier cylinder 14, head end detection device 15, first positioning groove 16, first pressure sensor 17, second positioning groove 18, second pressure sensor 19, feeding fixing seat 20, feeding limit seat 21, feeding limit groove 22, light clamp driver 23, heavy clamp top block 24, light clamp top block 26, moving seat 28, mounting bracket 29, shifting screw 30, shifting driver 31, guide slide bar 32, guide slider 33, bar stock 34, heavy clamp driver 35, etc., these terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A bar cutting machine, comprising a frame (1) and a bar feeding device (2) disposed on one side of the frame (1), wherein a feeding clamping assembly (3) is provided on the frame (1) near the bar feeding device (2), the feeding clamping assembly (3) being capable of receiving and fixing the bar (34) fed by the bar feeding device (2), a cutting clamping assembly (4) is provided on the frame (1) away from the bar feeding device (2), a cutting assembly (5) for cutting is provided above the cutting clamping assembly (4), a receiving device (9) is provided below the cutting assembly (5), and a bar conveying mechanism (6) for conveying the bar (34) is provided between the frame (1) and the feeding clamping assembly (3), characterized in that, The cutting clamping assembly (4) can realize at least light clamping and heavy clamping conditions. When the bar conveying mechanism (6) drives the feeding clamping assembly (3) to convey the bar forward, the cutting clamping assembly (4) switches to light clamping condition, and the bar (34) can overcome the force of the cutting clamping assembly (4) to continue to be conveyed forward. When the bar conveying mechanism (6) stops, the cutting clamping assembly (4) switches to heavy clamping condition to facilitate the cutting assembly (5) to complete the cutting. The feeding clamping assembly (3) can at least achieve light clamping and heavy clamping conditions; When the bar stock conveying mechanism (6) drives the feeding clamping assembly (3) to convey the bar stock (34) forward, the feeding clamping assembly (3) is in heavy clamping condition; When the bar conveying mechanism (6) drives the feeding clamping assembly (3) to convey the new bar (34) forward so that the new bar (34) comes into contact with the tail material on the cutting clamping assembly (4), the feeding clamping assembly (3) switches to light clamping mode and switches back to heavy clamping mode after the new bar (34) comes into contact with the tail material. During the process of the new bar (34) being conveyed forward and coming into contact with the tail material, the cutting clamping assembly (4) is in heavy clamping mode to prevent the tail material from shifting during the contact process. After the contact is completed, the cutting clamping assembly (4) returns to the switching between heavy clamping mode and light clamping mode. That is, when the tail material is pushed by the new bar (34) for conveying, the cutting clamping assembly (4) is in light clamping mode, and when the tail material is cut, the cutting clamping assembly (4) is in heavy clamping mode.

2. The bar cutting machine according to claim 1, characterized in that, The cutting clamping assembly (4) includes a cutting fixing seat (10), a cutting limiting seat (7) is provided on the cutting fixing seat (10), a cutting limiting groove (11) adapted to the bar stock (34) is formed between the cutting fixing seat (10) and the cutting limiting seat (7), a force multiplier driver (12) is provided on the cutting fixing seat (10), the output end of the force multiplier driver (12) is connected to a bar stock top block (13), the force multiplier driver (12) can drive the bar stock top block (13) to loosely or tightly press the bar stock (34) into the cutting limiting groove (11) to realize light clamping and heavy clamping conditions respectively.

3. The bar cutting machine according to claim 2, characterized in that, The force multiplier actuator (12) includes a force multiplier cylinder (14), which includes a first cylinder and a second cylinder. The force of the first cylinder is greater than that of the second cylinder. The second cylinder is equipped with a reversing valve. When the first cylinder and the second cylinder act in the same direction, the combined force of the first cylinder and the second cylinder can press the bar stock (34) tightly against the cutting limit groove (11) through the bar stock top block (13) to achieve a heavy clamping condition. When the second cylinder reverses its direction through the reversing valve and acts in the opposite direction to the force of the first cylinder, the combined force of the first cylinder and the second cylinder can loosely press the bar stock (34) against the cutting limit groove (11) through the bar stock top block (13) to achieve a light clamping condition.

4. The bar cutting machine according to claim 1, characterized in that, The feeding clamping assembly (3) includes a feeding fixing seat (20), a feeding limiting seat (21) is provided on the feeding fixing seat (20), and a feeding limiting groove (22) adapted to the bar stock (34) is formed between the feeding fixing seat (20) and the feeding limiting seat (21). The feeding fixing seat (20) is provided with a light clamping driver (23) and a heavy clamping driver (35). The output ends of the light clamping driver (23) and the heavy clamping driver (35) are respectively connected to a light clamping top block (26) and a heavy clamping top block (24). The light clamping driver (23) can drive the light clamping top block (26) to loosely press the bar stock (34) against the feeding limiting groove (22) to achieve a light clamping condition. The heavy clamping driver (35) can drive the heavy clamping top block (24) to tightly press the bar stock (34) against the feeding limiting groove (22) to achieve a heavy clamping condition.

5. The bar cutting machine according to claim 4, characterized in that, The bar conveying mechanism (6) includes a movable seat (28) located at the bottom of the feeding fixed seat (20). The frame (1) is provided with a displacement screw (30) distributed along the moving direction of the feeding clamping assembly (3) via a mounting frame (29). The displacement screw (30) is connected to a displacement driver (31). The screw nut of the displacement screw (30) is connected to the bottom of the movable seat (28). The mounting frame (29) is provided with guide slides (32) on both sides of the displacement screw (30). The bottom of the movable seat (28) is provided with a guide slider (33) that slides with the guide slides (32).

6. A method for further cutting the tail material of the bar stock from the bar cutting machine of claim 1, characterized in that, Includes the following steps: S1. After the system automatically identifies, calculates or manually controls the tail material cutting program, the bar feeding device (2) feeds the new bar (34) to the feeding clamping assembly (3). The feeding clamping assembly (3) switches to light clamping mode, the cutting clamping assembly (4) switches to heavy clamping mode, and the bar conveying mechanism (6) drives the feeding clamping assembly (3) to convey the newly fed bar (34) forward. S2. The bar conveying mechanism (6) conveys the newly loaded bar (34) to abut against the tail material on the cutting clamping assembly (4) and continues to convey it forward for a certain distance. Since the feeding clamping assembly (3) is in light clamping condition and the cutting clamping assembly (4) is in heavy clamping condition, the bar conveying mechanism (6) drives the feeding clamping assembly (3) to overcome the friction with the bar (34) and slide on the bar (34), so that pressure is generated between the newly loaded bar (34) and the tail material to eliminate the gap between the newly loaded bar (34) and the tail material. Thus, the end-to-end docking of the new bar (34) and the tail material is completed. S3. After the end-to-end docking is completed, the feeding clamping assembly (3) switches to heavy clamping mode, and the bar conveying mechanism (6) intermittently drives the feeding clamping assembly (3) to convey the newly loaded bar (34) forward. After the material is in place, the cutting clamping assembly (4) switches to heavy clamping mode, and the cutting assembly (5) starts cutting. After the cutting is completed, the cutting clamping assembly (4) switches to light clamping mode, and the bar conveying mechanism (6) feeds forward. This process is repeated. S4. When the system calculates or detects that the remaining tail material is insufficient to cut a workpiece, it switches to the tail material recycling program. At this time, the cutting clamping assembly (4) switches to light clamping mode, and the bar material conveying mechanism (6) drives the feeding clamping assembly (3) to convey the newly loaded bar material (34) forward a certain distance to push the tail material to the tail material collection station and then return to the position of the cutting clamping assembly (4) to start cutting the new bar material (34) until the new bar material (34) is cut again until only tail material remains, and then it returns to S1 to start the tail material cutting program.

7. The method for further cutting the tail material of the bar stock using the bar cutting machine according to claim 6, characterized in that, In step S1, the system calculates the remaining tail material length based on the set bar length (34), cutting length, and number of cutting operations to determine whether to enter the tail material cutting program.

8. The method for further cutting the tail material of the bar stock using the bar cutting machine according to claim 6, characterized in that, In step S4, the system calculates that the remaining tailings are insufficient to complete one cut based on the set bar length (34), cutting length, and number of cuts, and then switches to the tailings recycling program.

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