WO2024131915A1

WO2024131915A1 - Four-chuck tube laser cutting machine and method for using same

Info

Publication number: WO2024131915A1
Application number: PCT/CN2023/140791
Authority: WO
Inventors: 路世强; 许恒伟
Original assignee: 济南邦德激光股份有限公司
Priority date: 2022-12-22
Filing date: 2023-12-22
Publication date: 2024-06-27
Also published as: CN115647613A; CN115647613B

Abstract

The present application relates to the technical field of tube cutting, and in particular to a four-chuck tube laser cutting machine, comprising a machine bed and a laser head module arranged on the machine bed. The laser head module is fixed to the machine bed and can conduct cutting operation; four chucks are sequentially arranged on the machine bed in the axial direction thereof; the four chucks are respectively a first chuck, a second chuck, a third chuck and a fourth chuck; the four chucks can move in the axial direction of the machine bed; fixed jaws are arranged on the first chuck and the fourth chuck, and roller-type jaws are arranged on the second chuck and the third chuck; the machine bed comprises a feeding side machine bed and a discharging side machine bed; the feeding side machine bed is provided with a servo roller device; the discharging side machine bed is provided with a discharging flip plate device; the discharging flip plate device comprises a moving assembly, a flip assembly, and a flip plate; the moving assembly can drive the flip plate to move in the horizontal direction and the vertical direction; the flip assembly can drive the flip plate to flip towards one side of the machine bed. According to the present application, cutting and discharging are changed into parallel actions, and thus, the utilization rate of the machine tool is improved.

Description

A four-chuck laser tube cutting machine and use method

This application claims the priority of the Chinese patent application filed with the China Patent Office on December 22, 2022, with application number 202211652410.5 and invention name “A Four-Chuck Laser Tube Cutting Machine”, all contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the technical field of tube cutting, and in particular to a four-chuck laser tube cutting machine.

Background technique

The common laser tube cutting machines in the existing market usually use two chucks to clamp the profile for cutting. The finished parts after cutting are collected by unloading equipment, such as blanking racks, collection buckets, etc. The length of the finished parts supported by equipment such as blanking racks is usually no more than 2 meters, which cannot meet the cutting needs of longer finished parts such as 10 meters.

Some manufacturers use three-chuck cutting machines to meet the cutting needs of long finished parts, but the defects include: 1) For three-chuck cutting machines, the middle chuck cannot cut continuously when cooperating with the tail chuck to cut materials, and the automatic cutting of the whole process cannot be realized, which reduces the cutting efficiency; 2) The workpiece needs to be cut manually after cutting. For heavy finished parts, manual assisted cutting is highly dangerous, and the equipment cannot be unmanned, resulting in low work efficiency. There are also four-chuck cutting machines that meet the cutting needs of long finished parts. The movement of the four chucks is reasonably allocated and controlled to achieve the cutting of long finished parts and zero tail material cutting of pipes. However, for the existing four-chuck cutting machines, the cutting process after cutting still requires manual assisted cutting, and the automatic cutting of the whole process cannot be realized.

Summary of the invention

In view of the problem that current laser tube cutting machines cannot meet the cutting requirements of long and heavy finished parts, the present application proposes a four-chuck laser tube cutting machine.

The technical solution of this application is as follows:

According to one aspect of the present application, a four-chuck laser tube cutting machine is provided, comprising a bed and a laser head module arranged on the bed, the laser head module is fixed to the bed and can perform cutting operations, the bed is provided with four groups of chucks in sequence along its axial direction, the four groups of chucks are respectively a first chuck, a second chuck, a third chuck and a fourth chuck, the four groups of chucks are all able to move along the axial direction of the bed, the first chuck and the fourth chuck are both provided with fixed claws, the second chuck and the third chuck are both provided with roller claws; the bed comprises a loading side bed and a unloading side bed, the loading side bed is provided with a servo roller device, the unloading side bed is provided with a unloading flip plate device, the unloading flip plate device comprises a moving component, a turning component and a flip plate, the moving component The flap can be driven to move in the horizontal and vertical directions, and the flip assembly can drive the flap to flip toward one side of the bed. In this way, when cutting the profile, the machine tool feeds the material through a chuck, and the two chucks clamp and position the profile to achieve high-precision positioning. The servo roller can also position the profile to achieve auxiliary positioning during the process, and achieve cutting of high-precision long and heavy finished parts. When cutting the last finished part, zero tail material cutting can be achieved through relative coordinate transformation; the chuck clamps the finished part and moves it to the corresponding unloading flap, and automatic unloading can be achieved through the flipping of the flap; at the same time, the chuck cooperates with the flap action to achieve the parallel cutting process and unloading, changing the common serial action to parallel action, thereby improving the efficiency of the equipment.

Optionally, the material unloading flap device includes a first material unloading flap device and a second material unloading flap device, and the first material unloading flap device and the second material unloading flap device can both move along the axial direction of the bed and in a direction perpendicular to the axial direction of the bed. The first material unloading flap device and the second material unloading flap device can both realize movement along the X-axis (i.e., along the axial direction of the bed) and lifting along the Z-axis (i.e., in the vertical direction), realize multiple position operation, and realize material receiving and turning actions related to the dragging length. The material unloading flap device can be set as one or more groups according to the length of the unloading part without restriction. The material unloading flap device and the chuck can cooperate to realize automatic unloading and unattended operation.

Optionally, the moving component includes a flat plate, a horizontal driving component, a moving frame and a vertical driving component, the flat plate is fixed to the bed on the unloading side, the moving frame is movably arranged on the upper end surface of the flat plate, the horizontal driving component is fixed to the flat plate and can drive the moving frame to move along the flat plate; the vertical driving component is arranged on the moving frame, the flap is fixed to the vertical driving component through the flipping component, and the vertical driving component can drive the flipping component and the flipping plate to move in the vertical direction.

Optionally, the flip assembly includes a connecting rod and a flip cylinder, one end of each of the connecting rod and the flip cylinder is arranged on the vertical drive assembly, and the other end is supported on the lower end surface of the flap, and the connecting rod and the flip cylinder form a four-bar structure, and the flip cylinder can drive the flap to flip to one side of the bed; the length of the flip cylinder is greater than the length of the connecting rod. The flip cylinder is used to drive the flap to flip sideways to achieve material dropping or the flap to be in a horizontal state to achieve material support. The flip cylinder is equivalent to a rocker rod, which can provide a driving force for the flap to flip sideways. In the four-bar structure composed of the flip cylinder and the connecting rod, the length of the flip cylinder is greater than the length of the connecting rod, which can realize the motion trajectory curve of the flap to flip downward and move forward to the moving frame at the same time. The workpiece slides downward from the flap and generates a forward movement trend, which is convenient for the workpiece to fall onto the receiving table. The four-bar structure design can transmit a relatively large force to achieve the unloading of heavier workpieces.

Optionally, the vertical drive assembly includes a lead screw, a motor, a vertical linear guide rail, and a support block, the flap is fixed to the support block through the flip assembly, the support block is threadedly connected to the lead screw, and the two sides of the support block are respectively slidably arranged on the vertical linear guide rail, and the motor can drive the lead screw to rotate to drive the support block to move up and down along the lead screw and the vertical linear guide rail. The support block rises and slides on the vertical linear guide rail, and the lead screw is installed on the moving frame, which can drive the support block to rise and fall to realize the material supporting function.

Optionally, the horizontal drive assembly includes a horizontal linear guide rail and a horizontal cylinder, the horizontal linear guide rail is fixed to the upper end surface of the flat plate, the horizontal cylinder is fixed to the flat plate and the output end of the horizontal cylinder is connected to the mobile frame, and the horizontal cylinder can push the mobile frame to move on the horizontal linear guide rail. The cylinder is used to drive the mobile frame to move horizontally on the horizontal linear guide rail. When the cutting length changes, the position of the flip assembly changes accordingly based on the stroke of the horizontal cylinder.

Optionally, the servo roller device includes a fixed seat, a lifting drive assembly, a support seat, a roller assembly and a clamping roller assembly, the support seat is movably arranged on the fixed seat and the lifting drive assembly can drive the support seat to move up and down, and the roller assembly and the clamping roller assembly are both arranged on the support seat. The servo roller device installed on the feeding side of the bed is mainly used for supporting and assisting positioning of the profile, avoiding the profile from being affected by gravity and rotational force when rotating at high speed, eliminating deflection deformation, and improving the cutting size accuracy of the finished product.

Optionally, the roller assembly includes a roller and a roller bracket, the roller is horizontally arranged at the upper end of the support seat, and the two ends of the roller are fixed to the support seat by the roller bracket; the clamping roller assembly includes a clamping roller bracket, a first clamping roller, a second clamping roller, a first rack, a second rack, a gear and a clamping cylinder, the clamping roller bracket is fixed to the support seat, the first clamping roller and the second clamping roller are slidably arranged on the clamping roller bracket, the first rack is fixed to the first clamping roller, the second rack is fixed to the second clamping roller, the gear is rotatably arranged on the clamping roller bracket, the first rack and the second rack are both meshed with the gear and the first rack and the second rack are respectively arranged on both sides of the gear opposite to each other, and the clamping cylinder is fixed to the clamping roller bracket and can drive the first clamping roller or the second clamping roller to slide along the clamping roller bracket so that the first clamping roller and the second clamping roller are closer to or farther away from each other. The roller assembly is used to support the bottom of the profile, and the clamping roller assembly is mainly used to clamp the profile to assist in positioning; the clamping roller assembly uses a symmetrically arranged gear and rack structure to achieve asynchronous synchronous control of the first clamping roller and the second clamping roller. The racks are arranged face to face on both sides of the gear, so that one gear can simultaneously drive two face-to-face racks to perform synchronous and asynchronous movements, realizing one drive and two actions associated with each other, and can increase the opening and closing range of the clamping roller to adapt to more profile sizes.

Optionally, the bed includes a plurality of bed bodies that are spliced together, and adjacent bed bodies are fixedly connected by connecting plates; the bed body includes four square tubes, a C-shaped bending part, a rectangular tube and a side panel, the four square tubes are arranged in parallel, the C-shaped bending part connects the four square tubes in a vertical direction, and the rectangular tube is arranged at the C-shaped bending part, and the square tube, the C-shaped bending part and the rectangular tube together form a frame structure; the side panel is welded to the square tube to be arranged on the side of the frame structure, and the side panel is plugged into the C-shaped bending part. This plug-in connection method that combines concave and convex parts on two structural parts uses the mutual engagement of concave and convex parts to effectively limit the torsion in all directions between the components, plays a role in connection and stabilization, increases the strength and stability of the bed parts as a whole, and enhances the vibration absorption.

Optionally, the laser head module includes a cutting assembly, a Y-axis drive mechanism, a Z-axis drive mechanism and a gantry frame, wherein the gantry frame spans across the bed, and the chuck can pass through the gantry frame; the Y-axis drive mechanism and the Z-axis drive mechanism are both arranged on the gantry frame, and the Y-axis drive mechanism can drive the cutting assembly to move in a horizontal plane in a direction perpendicular to the axis of the bed, and the Z-axis drive mechanism can drive the cutting assembly to move in a vertical direction. The large span of the gantry frame allows the chuck to pass under the gantry frame, which facilitates equipment assembly and maintenance, and enables chuck movement and bevel cutting. The dimensional stability ensures that the high temperature environment in the cutting area does not affect the gantry. The door frame is stable in use and has no thermal deformation; the welding span of the rectangular material is large and the thermal stability is strong. The trapezoidal wing plates added at the overlap can further enhance its stability. The cutting assembly, Y-axis drive mechanism, and Z-axis drive mechanism are all side-mounted on the gantry frame, so only one mounting surface is required, which reduces the processing area, is easy to install, and easy to use for maintenance during the process. The side suspension installation will also increase the stroke of the Z-axis.

According to another aspect of the present application, a method for using any of the above four-chuck laser tube cutting machines is provided, wherein the blanking flap device is provided in plurality, and is sequentially provided as a first blanking flap device, a second blanking flap device, a third blanking flap device, a fourth blanking flap device... an Nth blanking flap device..... the length of the workpiece is divided into 6 standard values: L1, L11, L12, L2, L3, L4;

When the workpiece length is less than L11, the following steps are specifically included:

S1: The first chuck clamps the workpiece and sends it to the second chuck, the second chuck clamps the profile, and the first chuck feeds the material until the cutting is completed;

S2: The first unloading flap device is raised to a certain height to receive the material. After cutting, the unloading flap device lifts the finished part and descends to the flipping height and then flips. The workpiece slides to the receiving table to complete unloading;

When the workpiece length is between L11 and L12, the following steps are specifically included:

T1: the first chuck clamps the workpiece and sends it to the second chuck, and the second chuck clamps the workpiece and starts cutting;

T2: When the finished workpiece is cut to the length LA, the third chuck moves and clamps the workpiece, and when the cutting is completed, the third chuck moves away from the finished workpiece;

T3: The first unloading flap device is raised to a certain height to receive the material. After cutting, the first unloading flap device lifts the finished part and descends to the turning height and then turns over. The workpiece slides to the receiving table, and unloading is completed;

When the workpiece length is between L12 and L1, the following steps are specifically included:

U1: The first chuck clamps the workpiece and sends it to the second chuck, and the second chuck clamps the workpiece and starts cutting;

U2: When the finished workpiece is cut to the length LA, the third chuck moves and clamps the workpiece to perform three-chuck clamping and cutting.

U3: When the finished workpiece is cut to the length LB, the fourth chuck moves and clamps the workpiece to perform four-chuck clamping and cutting;

U4: After the cutting is completed, the third chuck and the fourth chuck clamp the finished workpiece and move so that the finished workpiece is located above the first unloading flap device, and the first unloading flap device rises to a certain height to receive the material. After cutting, the first unloading flap device lifts the finished workpiece down to the flipping height and then flips it, and the workpiece slides to the receiving table, completing the unloading;

When the workpiece length is between L1 and L2, the following steps are specifically included:

V1: Perform steps U1, U2, and U3;

V2: After the cutting is completed, the third chuck and the fourth chuck clamp the finished workpiece and move so that the finished workpiece is located above the first unloading flap device and the second unloading flap device. The first unloading flap device and the second unloading flap device are raised to a certain height to receive the material. After cutting, the two jointly lift the finished workpiece down to the flipping height and then flip it. The workpiece slides to the receiving table to complete the unloading;

When the workpiece length is between L2 and L3, the following steps are specifically included:

W1: Perform steps U1, U2, and U3;

W2: After the cutting is completed, the third chuck and the fourth chuck clamp the finished workpiece and move so that the finished workpiece is located above the first material unloading flap device, the second material unloading flap device and the third material unloading flap device, the first material unloading flap device, the second material unloading flap device and the third material unloading flap device are raised to a certain height to receive the material, and after cutting, the three jointly lift the finished workpiece down to the flipping height and then flip it, and the workpiece slides to the receiving table to complete the unloading;

When the workpiece length is between L3 and L4, the following steps are specifically included:

R1: Perform steps U1, U2, and U3;

R2: After cutting is completed, the third chuck and the fourth chuck clamp the finished part and move so that the finished part is located above the first material unloading flap device, the second material unloading flap device, the third material unloading flap device and the fourth material unloading flap device, the first material unloading flap device, the second material unloading flap device, the third material unloading flap device and the fourth material unloading flap device are raised to a certain height to receive the material, and after cutting, the four material unloading flap devices jointly lift the finished part down to the flipping height and then flip it, and the workpiece slides to the receiving table to complete the unloading.

The beneficial effects of this application are:

1. This application can achieve zero tailing cutting, save raw materials and improve material utilization.

2. This application can improve the load capacity of the machine tool, and with the help of the concept of one-time clamping, one-time positioning, and one-time cutting and forming, it makes it possible to cut long and heavy materials and improves the cutting accuracy.

3. This application changes the two original serial actions of cutting and unloading into parallel actions through the cooperation of the chuck and the flap, thereby improving the utilization rate of the machine tool in the same time period and improving the economic benefits.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of the three-dimensional structure of a four-chuck laser tube cutting machine according to one or more embodiments of the present application;

FIG2 is a front view of a four-chuck laser tube cutting machine according to one or more embodiments of the present application;

FIG3 is a schematic diagram of the simplified structure of a bed body in a four-chuck laser tube cutting machine according to one or more embodiments of the present application;

FIG4 is a schematic diagram of a partial structure of a bed body in a four-chuck laser tube cutting machine according to one or more embodiments of the present application.

FIG5 is a schematic diagram of another part of the structure of the bed body of the four-chuck laser tube cutting machine involved in one or more embodiments of the present application;

FIG6 is a front view of a servo roller device in a four-chuck laser tube cutting machine according to one or more embodiments of the present application;

FIG. 7 is a three-dimensional structure of a servo roller device in a four-chuck laser tube cutting machine according to one or more embodiments of the present application. Schematic diagram;

FIG8 is a schematic diagram of the three-dimensional structure of the servo roller device in the four-chuck laser tube cutting machine according to one or more embodiments of the present application from another angle;

FIG9 is a schematic diagram of the three-dimensional structure of a blanking and turning device in a four-chuck laser tube cutting machine according to one or more embodiments of the present application;

FIG10 is a schematic diagram of the three-dimensional structure of the blanking flap device in the four-chuck laser tube cutting machine according to one or more embodiments of the present application from another angle;

FIG11 is a schematic diagram of the three-dimensional structure of a laser head module in a four-chuck laser tube cutting machine according to one or more embodiments of the present application;

FIG12 is a front view of a laser head module in a four-chuck laser tube cutting machine according to one or more embodiments of the present application;

FIG. 13 is a side view of a laser head module in a four-chuck laser tube cutting machine according to one or more embodiments of the present application.

Description of reference numerals:
1. Bed, 2. Laser head module, 3. First chuck, 4. Second chuck, 5. Third chuck, 6. Fourth chuck, 7. Loading bed, 8. Unloading bed, 9. Servo roller device, 10. Unloading flap device, 11. Flip, 12. First unloading flap device, 13. Second unloading flap device, 14. Flat plate, 15. Mobile frame, 16. Horizontal linear guide, 17. Horizontal cylinder, 18. Lead screw, 19. Motor, 20. Vertical linear guide, 21. Support block, 22. Connecting rod, 23. Flip cylinder, 24. Fixed seat, 25. Support seat, 26. Roller, 27. Roller support Frame, 28, clamping roller bracket, 29, first clamping roller, 30, second clamping roller, 31, gear, 32, clamping cylinder, 33, guide rail, 34, roller lifting motor, 35, roller linear guide, 36, roller screw, 37, roller nut, 38, synchronous belt, 39, synchronous pulley, 40, position detection switch, 41, bed body, 42, connecting plate, 43, bed linear guide, 44, square tube, 45, C-type bending part, 46, rectangular tube, 47, side panel, 48, cutting assembly, 49, Y-axis drive mechanism, 50, Z-axis drive mechanism, 51, gantry frame, 52, mounting plate.

Detailed ways

In order to make the purpose, features and advantages of this application more obvious and easy to understand, the technical solution in this application will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of this application, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

As shown in Figures 1 to 13, in this embodiment, the present application proposes a four-chuck laser tube cutting machine, including a bed 1 and a laser head module 2 arranged on the bed 1, the laser head module 2 is fixed to the bed 1 and can perform cutting operations, the bed 1 is sequentially provided with four groups of chucks along its axial direction, the four groups of chucks are respectively the first chuck 3, the second chuck 4, the third chuck 5 and the fourth chuck 6, the four groups of chucks can all move along the axial direction of the bed 1, the first chuck 3 and the fourth chuck 6 are both provided with fixed claws, the second chuck 4 and the third chuck 5 are both provided with roller claws; the bed 1 includes a feeding side bed 7 and a unloading side bed 8, the feeding side bed 7 is provided with a servo roller device 9, the unloading side bed 8 is provided with an unloading flip device 10, and the unloading flip The plate device 10 includes a moving component, a turning component and a flap 11 . The moving component can realize the movement of the flap 11 in the horizontal and vertical directions, and the turning component can drive the flap 11 to turn to one side of the bed 1 . First, the whole machine is equipped with four chucks, which improves the profile load capacity of the machine tool. Based on the changes of four linear pressure regulating valves, continuous clamping of profiles with a clamping capacity of 200kg to 800kg is achieved, making it possible to cut long and heavy profiles; secondly, when cutting the profile, the machine tool feeds the material through a chuck, and two chucks clamp and position the profile to achieve high-precision positioning. The servo roller device 9 can also position the profile to achieve auxiliary positioning in the process, so as to achieve cutting of high-precision long and heavy finished parts. When cutting the last finished part, zero tail material cutting can be achieved through relative coordinate transformation; the chuck clamps the finished part and moves it to the corresponding unloading flap, and automatic unloading can be achieved by flipping the flap 11; at the same time, the chuck cooperates with the flap 11 to achieve parallel cutting and unloading, changing the common serial action into parallel action, thereby improving equipment efficiency.

As shown in Fig. 2, Fig. 9 to Fig. 10, in this embodiment, the material unloading flap device 10 is provided with two groups of a first material unloading flap device 12 and a second material unloading flap device 13. The first material unloading flap device 12 and the second material unloading flap device can both realize the movement of the X-axis (i.e., along the axial direction of the bed 1) and the lifting and lowering along the Z-axis (i.e., in the vertical direction), realize multiple positions, and realize the material receiving and turning actions related to the dragging length. The material unloading flap device 10 can be set as one or more groups according to the length of the unloading part, without limitation, and the material unloading flap device 10 and the chuck can cooperate to realize automatic unloading and unattended operation.

Among them, the moving component includes a flat plate 14, a horizontal driving component, a moving frame 15 and a vertical driving component. The flat plate 14 is fixed to the bed 8 on the unloading side. The moving frame 15 is movably arranged on the upper end surface of the flat plate 14. The horizontal driving component is fixed to the flat plate 14 and can drive the moving frame 15 to move along the flat plate 14. The horizontal driving component includes a horizontal linear guide rail 16 and a horizontal cylinder 17. The horizontal linear guide rail 16 is fixed to the upper end surface of the flat plate 14. The horizontal cylinder 17 is fixed to the flat plate 14 and the output end of the horizontal cylinder 17 is connected to the moving frame 15. The horizontal cylinder 17 can push the moving frame 15 to move on the horizontal linear guide rail 16. The horizontal cylinder 17 is used as a power component to drive the mobile frame 15 to move horizontally on the horizontal linear guide 16. When the cutting length changes, the corresponding change of the position of the flip assembly is based on the stroke of the horizontal cylinder 17. The mobile frame 15 in the figure is an L-shaped structure. Of course, other suitable structures can also be used. This application does not impose specific restrictions on this. The vertical drive assembly is arranged on the mobile frame 15. The flap 11 is fixed to the vertical drive assembly through the flip assembly. The vertical drive assembly can drive the flip assembly and the flap 11 to move in the vertical direction. The vertical drive assembly mainly includes a lead screw 18, a motor 19, a vertical linear guide 20 and a support block 21. The flap 11 is fixed to the support block 21 through the flip assembly. The support block 21 is threadedly connected to the lead screw 18, and the two sides of the support block 21 are respectively slidably arranged on the vertical linear guide 20. The motor 19 can drive the lead screw 18 to rotate to drive the support block 21 to move up and down along the lead screw 18 and the vertical linear guide 20. The support block 21 moves up and down and slides on the vertical linear guide rail 20. The lead screw 18 is installed on the moving frame 15 and can drive the support block 21 to move up and down to realize the material supporting function.

The flip assembly serves as the main supporting structure for the flap 11 and the main driving structure for the flap 11, and mainly includes a connecting rod 22 and a flip cylinder 23. One end of the connecting rod 22 and the flip cylinder 23 are both arranged on the vertical driving assembly, and the other end is supported on the lower end surface of the flap 11. The connecting rod 22 and the flip cylinder 23 form a four-link structure. The flip cylinder 23 can drive the flap 11 to flip to one side of the bed 1; the length of the flip cylinder 23 is greater than the length of the connecting rod 22. The flip cylinder 23 is used to drive the flap 11 to flip sideways to achieve material dropping or the flap 11 to be in a horizontal state to achieve material support. The role of the flip cylinder 23 is equivalent to a rocker rod, which can provide a driving force for the flap 11 to flip sideways. The length of the flip cylinder 23 in the four-link structure composed of the flip cylinder 23 and the connecting rod 22 is greater than the length of the flip cylinder 23. The length must be greater than the length of the connecting rod 22, so that the movement trajectory curve of the flap 11 can be realized while flipping downward and moving forward toward the movable frame 15. The workpiece slides downward from the flap 11 and generates a forward movement trend, which facilitates the workpiece to fall onto the receiving table, and the four-link structure design can transmit relatively large force to realize the unloading of heavier workpieces.

The blanking flap device 10 has different working states according to the length of the workpiece to be cut. There are multiple blanking flap devices 10, which are sequentially arranged as the first blanking flap device, the second blanking flap device, the third blanking flap device, the fourth blanking flap device...the Nth blanking flap device.....

The length of the workpiece is divided into 4 standard values: L1, L2, L3, and L4.

If L≤L1, the first unloading flap device is used for unloading.

If L1＜L≤L2, the first material unloading flap device and the second material unloading flap device are used in combination for unloading.

If L2＜L≤L3, the first material unloading flap device, the second material unloading flap device and the third material unloading flap device are combined for unloading.

If L3＜L≤L4, the first material unloading flap device, the second material unloading flap device, the third material unloading flap device and the fourth material unloading flap device are used in combination for unloading.

When the workpiece length is less than L1, two standard values are set for the workpiece length according to the working state of the chuck: L11 and L12.

When the length of the workpiece is less than L11, the first chuck 3 clamps the workpiece and sends it to the second chuck 4. The second chuck 4 clamps the profile and can perform processes such as fixed length and end cutting. The second chuck 4 clamps the workpiece, and the first chuck 3 feeds the material until the cutting is completed. The third and fourth chucks do not participate in the cutting process. When unloading, the first unloading flap device 10 rises to a fixed height to receive the material. After cutting, the unloading flap device 10 lifts the finished part and descends to the flip height and flips. The workpiece slides to the receiving table to complete unloading. Among them, the unloading flap device 10 can be flexibly moved under the chuck after descending, so as to reach the designated position for unloading.

When the length of the workpiece is between L11 and L12, the first chuck 3 clamps the workpiece and sends it to the second chuck 4. The second chuck 4 clamps the workpiece and cutting begins. When the finished part is cut to the length of L1, the third chuck 5 moves and clamps the workpiece to achieve three-chuck clamping and cutting. After the three-chuck clamping and cutting are completed, the third chuck 5 moves away from the finished part, and the first unloading flap device rises to a fixed height to receive the material. After cutting, the first unloading flap device lifts the finished part down to the flipping height and then flips over. The workpiece slides to the receiving table to complete unloading.

When the length of the workpiece is between L12 and L1, the first chuck 3 clamps the workpiece and sends it to the second chuck 4. The second chuck 4 clamps the workpiece and cutting begins. When the finished part is cut to the length LA, the third chuck 5 moves and clamps the workpiece to achieve three-chuck clamping and cutting. When the finished part is cut to the length LB, the fourth chuck 6 moves and clamps the workpiece to achieve four-chuck clamping and cutting. After the four-chuck clamping and cutting are completed, the third chuck 5 and the fourth chuck 6 clamp the finished part and move so that the finished part is located above the first unloading flap device. The first unloading flap device rises to a certain height to receive the material. After cutting, the first unloading flap device lifts the finished part down to the flipping height and then flips over. The workpiece slides to the receiving table to complete the unloading.

When the length of the workpiece is between L1 and L2, all four chucks are involved in the cutting process. After the four chucks clamp and cut, the third chuck 5 and the fourth chuck 6 clamp the finished workpiece and move so that the finished workpiece is located above the first unloading flap device and the second unloading flap device. The first unloading flap device and the second unloading flap device are raised to a certain height to receive the material. After cutting, The two together lift the finished part down to the flipping height and then flip it over. The workpiece slides to the receiving table and the unloading is completed.

When the length of the workpiece is between L2 and L3, all four chucks are involved in the cutting process. After the four chucks clamp and cut to completion, the third chuck 5 and the fourth chuck 6 clamp the finished workpiece and move so that the finished workpiece is located above the first material unloading flap device, the second material unloading flap device and the third material unloading flap device. The first material unloading flap device, the second material unloading flap device and the third material unloading flap device are raised to a certain height to receive the material. After cutting, the three jointly lift the finished workpiece down to the flipping height and then flip it over. The workpiece slides to the receiving table to complete the unloading.

When the length of the workpiece is between L3 and L4, all four chucks are involved in the cutting process. After the four chucks clamp and cut to completion, the third chuck 5 and the fourth chuck 6 clamp the finished workpiece and move so that the finished workpiece is located above the first material unloading flap device, the second material unloading flap device, the third material unloading flap device and the fourth material unloading flap device. The first material unloading flap device, the second material unloading flap device, the third material unloading flap device and the fourth material unloading flap device are raised to a certain height to receive the material. After cutting, the four material unloading flap devices jointly lift the finished workpiece down to the flipping height and then flip it over. The workpiece slides to the receiving table to complete the unloading.

Among them, the values of L1, L2, L3, and L4 can be 2600mm, 4800mm, 7600mm, and 9200mm, and the values of L11 and L12 can be 500mm and 1900mm.

As shown in Figures 6 to 8, the servo roller device 9 includes a fixed seat 24, a lifting drive assembly, a support seat 25, a roller assembly and a clamping roller assembly. The support seat 25 is movably arranged on the fixed seat 24 and the lifting drive assembly can drive the support seat 25 to move up and down. The roller assembly and the clamping roller assembly are both arranged on the support seat 25. The servo roller device 9 installed on the feeding side bed 7 is mainly used for supporting and assisting positioning of the profile, avoiding the profile from being affected by gravity and rotational force when rotating at high speed, eliminating deflection deformation, and improving the cutting size accuracy of the finished product. The roller assembly includes a roller 26 and a roller bracket 27. The roller 26 is horizontally arranged at the upper end of the support seat 25. Both ends of the roller 26 are fixed to the support seat 25 through the roller bracket 27. The roller assembly is mainly used to support the bottom of the profile; the clamping roller assembly includes a clamping roller bracket 28, a first clamping roller 29, a second clamping roller 30, a first rack, a second rack, a gear 31 and a clamping cylinder 32. The clamping roller bracket 28 is fixed to the support seat 25. A guide rail 33 is arranged on the clamping roller bracket 28. The first clamping roller 29 and the second clamping roller are connected to each other. The roller 30 is slidably arranged on the guide rail 33, the first rack is fixed to the first clamping roller 29, the second rack is fixed to the second clamping roller 30, the gear 31 is rotatably arranged on the clamping roller bracket 28, the first rack and the second rack are both meshed with the gear 31 and the first rack and the second rack are respectively arranged on both sides of the gear 31 opposite to each other, the clamping cylinder 32 is fixed to the clamping roller bracket 28 and can drive the first clamping roller 29 or the second clamping roller 30 to slide along the clamping roller bracket 28 so that the first clamping roller 29 and the second clamping roller 30 are closer to or farther away from each other. The clamping roller assembly is mainly used for clamping the profile to assist in positioning. The clamping roller assembly utilizes a symmetrically arranged gear and rack structure to achieve asynchronous synchronous control of the first clamping roller 29 and the second clamping roller 30. The racks are arranged face to face on both sides of the gear 31, so that one gear 31 can simultaneously drive two face-to-face racks to perform synchronous and asynchronous movements, thereby realizing one drive and two actions associated with each other, and can increase the opening and closing range of the clamping roller to adapt to more profile sizes.

In the servo roller device 9, the fixed seat 24 is mainly used to install various structures of the lifting drive assembly. The fixed seat 24 is equipped with a roller lifting motor 34, a roller linear guide 35, a roller screw 36, a roller nut 37, a synchronous belt 38, a synchronous pulley 39 and other moving parts to realize the lifting and moving of the material roller, thereby supporting the pipe. Furthermore, the roller lifting motor 34 is installed on one side of the upper end of the roller screw 36, and is used to drive the roller screw 36 to control the position of the roller when it is lifted. The installation position of the motor 34 is set at the upper end of the entire servo roller device 9, which is convenient for installation and maintenance. The tension of the synchronous belt can be easily adjusted by opening the motor cover. The transmission between the roller lifting motor 34 and the roller screw 36 uses a synchronous belt 38 and a synchronous pulley 39. The use of the synchronous pulley 39 can make the transmission accurate and realize the precise positioning of the roller. The roller nut seat 37 is slidably set on the roller screw 36, and the support seat 25 is fixed to the roller nut seat 37. Therefore, the roller assembly and the clamping roller assembly on the support seat 25 can be lifted and lowered along the roller screw 36 and the roller linear guide 35 with the roller nut seat 37. Different profiles can be realized by adjusting the height of the roller assembly and the clamping roller assembly to achieve follow-up support; at the same time, a position detection switch 40 is also installed on the fixed seat 24 to detect the extreme position of lifting.

There may be multiple servo roller devices 9, and the specific number may be flexibly determined according to the actual application scenario, and this application does not impose any restrictions on this.

As shown in Figures 1 to 5, the bed 1 includes a plurality of sections of bed bodies 41 that are spliced together, and adjacent bed bodies 41 are fixedly connected by connecting plates 42. Furthermore, in the embodiment shown in the figure, the bed 1 includes a splicing structure of four sections of bed bodies 41, and the splicing structure is fixedly designed at the connection of the four sections of bed bodies 41, and is used to position and fix the connection of the bed bodies 41. The bed splicing structure includes a pre-processed surface on the bed and a rectangular connecting plate 42; the pre-processed surface adopts the same reference plane and the same tolerance requirements, and the rectangular connecting plate 42 is used to connect and fix two adjacent sections of bed bodies 41. Fixed threaded holes and conical pin holes are provided on the rectangular connecting plate 42, and the threaded holes are side top threads. The bed body 41 is connected by fixed threaded holes, and the straightness of the splicing of the bed body can be adjusted by side top screws. After adjustment, it is fixed by conical pins. After fixation, the bed linear guide 43 is installed on the upper end surface to realize the four-chuck sliding structure; the bed body 41 includes four square tubes 44, C-shaped bending parts 45, rectangular tubes 46 and side panels 47. The four square tubes 44 are arranged in parallel, and the C-shaped bending parts 45 connect the four square tubes 44 in the vertical direction, and rectangular tubes 46 are arranged at the C-shaped bending parts 45. The square tubes 44, C-shaped bending parts 45 and rectangular tubes 46 together form a frame structure; the side panels 47 are welded to the square tubes 44 to be arranged on the side of the frame structure, and the side panels 47 are plugged into the C-shaped bending parts 45. This plug-in connection method of combining the concave and convex parts on two structural parts uses the concave and convex parts to bite each other, effectively limiting the twisting in all directions between the components, playing a role in connection and stability, increasing the strength and stability of the bed 1 as a whole, and enhancing the vibration absorption. Square steel can be fixed on the top of the square tube 44 to facilitate the installation of the bed linear guide 43.

As shown in Figures 11 to 13, the laser head module 2 includes a cutting assembly 48, a Y-axis drive mechanism 49, a Z-axis drive mechanism 50 and a gantry frame 51. The gantry frame 51 spans the bed 1, and the chuck can pass through the gantry frame 51; the Y-axis drive mechanism 49 and the Z-axis drive mechanism 50 are both arranged on the gantry frame 51, the Y-axis drive mechanism 49 can drive the cutting assembly 48 to move in a horizontal plane in a direction perpendicular to the axis of the bed 1, and the Z-axis drive mechanism 50 can drive the cutting assembly 48 to move in a vertical direction. The Y-axis drive mechanism 49 and the Z-axis drive mechanism 50 can select low-cost lead screws as driving components, and select high The dynamically corresponding linear motor assembly is used as the driving source, and the linear motor structure is used for driving, which has high positioning accuracy, high acceleration, fewer linear motor transmission parts, simpler structure, and no need for maintenance; the introduction of position compensation reduces interpolation lag, and the positioning accuracy and repeat positioning accuracy are greatly improved; due to the centrifugal force, the servo rotary motor will be affected by the large centrifugal stress when rotating at high speed, and the output speed and torque are limited, while the linear motor has no such limitation and no mechanical loss, which has greater advantages; the cutting assembly 48, the Y-axis drive mechanism 49, and the Z-axis drive mechanism 50 are all installed on the gantry frame 51, so only The laser cutting machine has a single mounting surface, which reduces the processing area, is easy to install, and is easy to use for maintenance during the process. The side suspension installation also increases the travel of the Z axis. The cutting assembly 48, as the main laser cutting output component, is installed on a mounting plate 52 formed of an aluminum alloy. The mounting plate 52 is provided with a vertical rib plate and four horizontal rib plates. The rib plates are in a U-shaped structure, which can ensure strong structural rigidity under the premise of light structural weight.

The working principle of the four-chuck laser tube cutting machine is:

The operator adopts manual or automatic loading method, the machine tool feeds through a chuck, two chucks clamp and position the profile to achieve high-precision positioning, the servo roller device 9 positions the profile to achieve auxiliary positioning in the process, and realizes the cutting of high-precision long and heavy finished parts. When cutting the last finished part, the relative coordinate transformation is used to achieve zero tail material cutting, the chuck clamps the finished part and moves it to the corresponding unloading flap 11 to realize automatic unloading. By setting the chuck function, the ordinary serial action is changed to parallel action. In a machine tool and a time period, the logical control of two actions is realized to be carried out simultaneously without interfering with each other, and the cutting process and unloading are realized in parallel, which improves the utilization efficiency of equipment, improves work efficiency and improves comprehensive benefits.

It can be seen from the above implementation that the beneficial effects of the present application are:

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

A four-chuck laser tube cutting machine, characterized in that it comprises a bed and a laser head module arranged on the bed, the laser head module is fixed to the bed and can perform cutting operations, the bed is sequentially provided with four groups of chucks along its axial direction, the four groups of chucks are respectively a first chuck, a second chuck, a third chuck and a fourth chuck, the four groups of chucks can all move along the axial direction of the bed, the first chuck and the fourth chuck are both provided with fixed jaws, and the second chuck and the third chuck are both provided with roller jaws;

The bed includes a loading side bed and a unloading side bed. The loading side bed is provided with a servo roller device, and the unloading side bed is provided with a unloading flap device. The unloading flap device includes a moving component, a turning component and a flap. The moving component can drive the flap to move in the horizontal and vertical directions, and the turning component can drive the flap to flip toward one side of the bed.
The four-chuck laser tube cutting machine according to claim 1 is characterized in that the unloading flap device includes a first unloading flap device and a second unloading flap device, and the first unloading flap device and the second unloading flap device can both move along the axial direction of the bed and in a direction perpendicular to the axial direction of the bed.
The four-chuck laser tube cutting machine according to claim 1 is characterized in that the moving component includes a flat plate, a horizontal drive component, a moving frame and a vertical drive component, the flat plate is fixed to the bed on the unloading side, the moving frame is movably arranged on the upper end surface of the flat plate, the horizontal drive component is fixed to the flat plate and can drive the moving frame to move along the flat plate; the vertical drive component is arranged on the moving frame, the flap is fixed to the vertical drive component through the flipping component, and the vertical drive component can drive the flipping component and the flipping plate to move in the vertical direction.
According to the four-chuck laser tube cutting machine according to claim 3, it is characterized in that the flipping assembly includes a connecting rod and a flipping cylinder, one end of the connecting rod and the flipping cylinder are both arranged on the vertical drive assembly, and the other end is supported on the lower end surface of the flip plate, and the connecting rod and the flipping cylinder form a four-bar structure, and the flipping cylinder can drive the flip plate to flip to one side of the bed; the length of the flipping cylinder is greater than the length of the connecting rod.
According to the four-chuck laser tube cutting machine according to claim 3, it is characterized in that the vertical drive assembly includes a lead screw, a motor, a vertical linear guide and a support block, the flap is fixed to the support block through the flip assembly, the support block is threadedly connected to the lead screw, and the two sides of the support block are respectively slidably arranged on the vertical linear guide, and the motor can drive the lead screw to rotate to drive the support block to move up and down along the lead screw and the vertical linear guide.
According to the four-chuck laser tube cutting machine according to claim 3, it is characterized in that the horizontal driving assembly includes a horizontal linear guide rail and a horizontal cylinder, the horizontal linear guide rail is fixed to the upper end surface of the flat plate, the horizontal cylinder is fixed to the flat plate and the output end of the horizontal cylinder is connected to the movable frame, and the horizontal cylinder can push the movable frame to move on the horizontal linear guide rail.
The four-chuck laser tube cutting machine according to claim 1 is characterized in that the servo roller device includes a fixed seat, a lifting drive assembly, a support seat, a roller assembly and a clamping roller assembly, the support seat is movably arranged on the fixed seat and the lifting drive assembly can drive the support seat to move up and down, and the roller assembly and the clamping roller assembly are both arranged on the support seat.
The four-chuck laser tube cutting machine according to claim 7 is characterized in that the roller assembly comprises a roller and a roller bracket, the roller is horizontally arranged at the upper end of the support seat, and both ends of the roller are fixed to the support seat through the roller bracket;

The clamping roller assembly includes a clamping roller bracket, a first clamping roller, a second clamping roller, a first rack, a second rack, a gear and a clamping cylinder. The clamping roller bracket is fixed to the support seat. The first clamping roller and the second clamping roller are slidably arranged on the clamping roller bracket. The first rack is fixed to the first clamping roller, and the second rack is fixed to the second clamping roller. The gear is rotatably arranged on the clamping roller bracket. The first rack and the second rack are both meshed with the gear and the first rack and the second rack are respectively arranged on both sides of the gear opposite to each other. The clamping cylinder is fixed to the clamping roller bracket and can drive the first clamping roller or the second clamping roller to slide along the clamping roller bracket so that the first clamping roller and the second clamping roller are closer to or farther away from each other.
The four-chuck laser tube cutting machine according to claim 1 is characterized in that the bed includes a plurality of spliced bed bodies, and adjacent bed bodies are fixedly connected by connecting plates; the bed body includes four square tubes, a C-shaped bending part, a rectangular tube and a side panel, the four square tubes are arranged in parallel, the C-shaped bending part connects the four square tubes in a vertical direction, and the rectangular tube is arranged at the C-shaped bending part, and the square tube, the C-shaped bending part and the rectangular tube together form a frame structure; the side panel is welded to the square tube to be arranged on the side of the frame structure, and the side panel is plugged into the C-shaped bending part.
The four-chuck laser tube cutting machine according to claim 1 is characterized in that the laser head module includes a cutting assembly, a Y-axis drive mechanism, a Z-axis drive mechanism and a gantry frame, the gantry frame spans the bed, and the chuck can pass through the gantry frame; the Y-axis drive mechanism and the Z-axis drive mechanism are both arranged on the gantry frame, the Y-axis drive mechanism can drive the cutting assembly to move in a direction perpendicular to the axis of the bed in a horizontal plane, and the Z-axis drive mechanism can drive the cutting assembly to move in a vertical direction.
The method for using the four-chuck laser tube cutting machine according to any one of claims 1 to 10 is characterized in that the blanking flap device is provided with a plurality of flap devices, which are sequentially provided as a first blanking flap device, a second blanking flap device, a third blanking flap device, a fourth blanking flap device... an Nth blanking flap device..... the length of the workpiece is divided into 6 standard values: L1, L11, L12, L2, L3, L4;

When the workpiece length is less than L11, the following steps are specifically included:

S1: The first chuck clamps the workpiece and sends it to the second chuck, the second chuck clamps the profile, and the first chuck feeds the material until the cutting is completed;

S2: The first unloading flap device is raised to a certain height to receive the material, and after cutting, the unloading flap device lifts the finished product. It descends to the turning height and then turns over, and the workpiece slides to the receiving table to complete the unloading;

When the workpiece length is between L11 and L12, the following steps are specifically included:

T1: the first chuck clamps the workpiece and sends it to the second chuck, and the second chuck clamps the workpiece and starts cutting;

T2: When the finished workpiece is cut to the length LA, the third chuck moves and clamps the workpiece, and when the cutting is completed, the third chuck moves away from the finished workpiece;

T3: The first unloading flap device is raised to a certain height to receive the material. After cutting, the first unloading flap device lifts the finished part and descends to the turning height and then turns over. The workpiece slides to the receiving table, and unloading is completed;

When the workpiece length is between L12 and L1, the following steps are specifically included:

U1: The first chuck clamps the workpiece and sends it to the second chuck, and the second chuck clamps the workpiece and starts cutting;

U2: When the finished workpiece is cut to the length LA, the third chuck moves and clamps the workpiece to perform three-chuck clamping and cutting.

U3: When the finished workpiece is cut to the length LB, the fourth chuck moves and clamps the workpiece to perform four-chuck clamping and cutting;

U4: After the cutting is completed, the third chuck and the fourth chuck clamp the finished workpiece and move so that the finished workpiece is located above the first unloading flap device, and the first unloading flap device rises to a certain height to receive the material. After cutting, the first unloading flap device lifts the finished workpiece down to the flipping height and then flips it, and the workpiece slides to the receiving table, completing the unloading;

When the workpiece length is between L1 and L2, the following steps are specifically included:

V1: Perform steps U1, U2, and U3;

V2: After the cutting is completed, the third chuck and the fourth chuck clamp the finished workpiece and move so that the finished workpiece is located above the first unloading flap device and the second unloading flap device. The first unloading flap device and the second unloading flap device are raised to a certain height to receive the material. After cutting, the two jointly lift the finished workpiece down to the flipping height and then flip it. The workpiece slides to the receiving table to complete the unloading;

When the workpiece length is between L2 and L3, the following steps are specifically included:

W1: Perform steps U1, U2, and U3;

W2: After the cutting is completed, the third chuck and the fourth chuck clamp the finished workpiece and move so that the finished workpiece is located above the first material unloading flap device, the second material unloading flap device and the third material unloading flap device, the first material unloading flap device, the second material unloading flap device and the third material unloading flap device are raised to a certain height to receive the material, and after cutting, the three jointly lift the finished workpiece down to the flipping height and then flip it, and the workpiece slides to the receiving table to complete the unloading;

When the workpiece length is between L3 and L4, the following steps are specifically included:

R1: Perform steps U1, U2, and U3;

R2: After the cutting is completed, the third chuck and the fourth chuck clamp the finished part and move so that the finished part is located at the Above the first material unloading flap device, the second material unloading flap device, the third material unloading flap device and the fourth material unloading flap device, the first material unloading flap device, the second material unloading flap device, the third material unloading flap device and the fourth material unloading flap device are raised to a certain height to receive the materials. After cutting, the four material unloading flap devices jointly lift the finished parts down to the flipping height and then flip them. The workpieces slide to the receiving table to complete the unloading.