A cutting bed tool changing system and control method thereof

Abstract

The present invention relates to a cutting bed tool changing system and a control method thereof, comprising a tool changing device, a detection device and a control device. The tool changing device comprises a tool locking assembly and a tool magazine assembly. The tool magazine assembly comprises a tool magazine body, a tool box mechanism, a tool feeding mechanism and a trigger unit. The system and the control method thereof can realize automatic replacement of the cutting bed blade after the cutting bed blade fails. Moreover, the original cutting bed can be modified and retrofitted only by replacing the fixing screws of the original blade, thereby realizing the functional upgrade of automatic tool change. The detection device can be used to perform real-time online detection of the blade status, thereby avoiding the blade from continuing to work after failure, resulting in excessive waste. The system replaces manual supervision of the blade status and blade replacement, thereby greatly improving the cutting quality and efficiency, reducing the generation of waste, reducing production costs, and reducing the time and labor costs of manual tool change.

Description

Technical Field

[0001] The present invention relates to the field of automatic tool changing for cutting machines, and in particular to a tool changing system for cutting machines and a control method thereof. Background Art

[0002] As the cutting efficiency and cutting speed of the cutting table increase, the wear of the cutting knife will accelerate sharply, and the risk of deformation and breakage of the tool blade caused by high-speed cutting will also increase. The deformation of the blade will cause the cutting trajectory to deviate, and the damage of the blade will destroy the fiber structure of the fabric, generate waste, and increase the load on the cutter head. Compared with the tool changing device of traditional machine tools, the blade of the cutting tool of the cutting table is small and thin, and the blade and the knife holder that fixes the blade need to vibrate at high speed. Therefore, it is impossible to install a large electric control fixture on the knife holder, and manual blade replacement is required. Frequent shutdowns, manual monitoring and blade replacement will affect the working efficiency and quality of the cutting table, consume manpower, generate excessive waste, waste resources, increase costs, and are also not conducive to the unmanned development of the cutting room.

[0003] In order to meet the needs of unmanned cutting tables, it is necessary to perform online detection of cutting table tools and change tools based on the detection results. The existing tool changing structure does not have the tool detection function, so it is impossible to achieve real-time monitoring and automatic replacement of cutting table tools. Summary of the Invention

[0004] To this end, it is necessary to provide a cutting table blade changing system, which aims to solve the problem that manual monitoring and replacement of blades will affect the working efficiency and quality of the cutting table, which is not conducive to the unmanned development of the cutting room. It can realize the automatic replacement of cutting table blades. The main structure is based on the existing cutting table, which is convenient for updating and modification on the existing cutting table.

[0005] To achieve the above-mentioned purpose, the inventor provides a cutting bed tool changing system, comprising a tool changing device, a detection device and a control device;

[0006] The tool changing device includes a tool locking assembly and a tool magazine assembly;

[0007] The knife locking assembly includes a knife seat and a set screw, wherein the knife seat is mounted on the knife bar of the tool, the set screw is located in the knife seat, and the tail of the set screw is provided with a rotating part;

[0008] The tool magazine assembly includes a tool magazine body, a tool box mechanism, a tool feeding mechanism and a trigger unit. The tool magazine body is connected to the machine tool, the tool box mechanism is installed on the tool magazine body, the tool feeding mechanism is installed on the tool magazine body, the tool box mechanism is used to store blades, the tool feeding mechanism is used to take and feed blades, the tool locking assembly is installed on the tool head of the cutting tool, and is used to loosen or tighten the blade on the tool head. The trigger unit is located on the tool magazine body or the tool feeding mechanism, and is used to trigger the rotation of the rotating part of the set screw;

[0009] The control device is installed on the machine head or the machine tool, and the control device is connected to the tool changing device;

[0010] The detection device is installed on a machine head or a machine tool. The detection device includes an information acquisition unit and an information processing unit. The information acquisition unit is connected to the information processing unit, and the information processing unit is connected to the control device. The detection device is used to detect whether the blade is invalid.

[0011] As a preferred structure of the present invention, the rotating part of the set screw is an outer cantilever, the outer cantilever is perpendicular to the axis of the rotating shaft of the set screw, the outer cantilever is symmetrically arranged, and the rotating part of the set screw is located outside the cutting tool.

[0012] As a preferred structure of the present invention, the trigger unit also includes a first driver and a push rod, the first driver is arranged on the tool feeding mechanism, the push rod is slidably connected to the tool feeding mechanism or the tool magazine body, the first driver is connected to the push rod, and the first driver is used to drive the push rod to move up and down.

[0013] As a preferred structure of the present invention, the knife box mechanism includes a knife box body, a knife dragging plate and a spring. The knife box body is connected to the tool magazine body. A cavity is provided inside the knife box body to make room for stacked blades. The knife box body is provided with a knife outlet. The knife dragging plate is slidably connected to the cavity of the knife box body. The spring is connected between the knife box body and the knife dragging plate.

[0014] The knife feeding mechanism includes a second driver and a drag plate, the drag plate is slidably connected to the tool magazine body, a partition is provided on the tool magazine body, the drag plate and the partition fit together, a knife groove is provided on a side of the drag plate close to the partition, the second driver is installed on the tool magazine body, the second driver is connected to the drag plate, and is used to drive the drag plate to slide, and the knife outlet of the tool magazine body abuts against the drag plate.

[0015] As a preferred structure of the present invention, the tool feeding mechanism also includes a third driver and a top block. The third driver is installed on the tool magazine body. A slot is provided on the partition. The top block is located in the slot of the partition. The top block is connected to the output end of the third driver. The top block is used to tighten the blade.

[0016] As a preferred structure of the present invention, the tool magazine assembly further includes a waste box, which is mounted on the tool magazine body and is located below the partition notch. An opening is provided at the bottom of the partition notch.

[0017] As a preferred structure of the present invention, the information acquisition unit is an image acquisition unit, the information processing unit is an image processing unit, the light source, image acquisition unit and image processing unit are installed on the machine head or machine tool, the image acquisition unit is connected to the image processing unit, the image processing unit is connected to the control device, the image acquisition unit is used to acquire fabric incision images, and the image processing unit is used to extract and analyze the fabric incision shape.

[0018] As a preferred structure of the present invention, the control device is a single chip microcomputer or a PLC controller.

[0019] Accordingly, the present application also provides a control method for a cutting table tool changing system, including the above-mentioned cutting table tool changing system, comprising the following steps:

[0020] Step 1: The information collection unit of the detection device collects the blade operating parameters and sends the collected blade operating parameters to the information processing unit. The information processing unit compares the collected blade operating parameters with the standard operating parameters to determine whether the blade has failed. If the blade has failed, the failure information is sent to the control device;

[0021] Step 2: The control device receives the blade failure information, controls the cutting bed to stop cutting, and moves the tool to the designated position;

[0022] Step 3: The control device controls the trigger unit to trigger the set screw rotating part to rotate, thereby loosening the blade on the cutter head;

[0023] Step 4: The control device controls the knife feeding mechanism to move the blade into the tool magazine assembly;

[0024] Step 5: The control device controls the knife feeding mechanism to take out a new blade from the knife box mechanism;

[0025] Step 6: The control device controls the trigger unit to trigger the set screw rotating part to rotate, thereby locking the blade on the cutter head.

[0026] This system and its control method enable automatic replacement of cutting blades after they fail. Simply by replacing the original blade's set screws, the original cutting bed can be retrofitted and retrofitted to achieve an automatic blade-changing upgrade. Furthermore, a detection device can be used to monitor blade status in real time online, preventing excessive waste from occurring after a blade fails. This eliminates the need for manual blade status monitoring and replacement, significantly improving cutting quality and efficiency, reducing waste, lowering production costs, and reducing the time and labor costs of manual blade changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of a knife locking mechanism installed on a knife rod according to an embodiment of the present invention;

[0028] Figure 2 A partial cross-sectional view of a cutting tool with a cutting tool locking mechanism according to an embodiment of the present invention;

[0029] Figure 3 A partial right side view of a cutting tool with a cutting tool locking mechanism according to an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the three-dimensional structure of the knife box mechanism according to one embodiment of the present invention;

[0031] Figure 5 A cross-sectional view of a knife box mechanism according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the three-dimensional structure of a tool changing device according to an embodiment of the present invention;

[0033] Figure 7 A schematic top view of a tool changing device according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of the tool changing device of one embodiment of the present invention when a new tool is used;

[0035] Figure 9 This is a schematic diagram of the three-dimensional structure of the tool changing device when removing an old tool according to one embodiment of the present invention;

[0036] Figure 10 This is a working diagram of a tool changing system according to an embodiment of the present invention;

[0037] Figure 11 Schematic diagram of the three-dimensional structure of the tool changing device of the tool feeding mechanism according to one embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 11. Tool holder; 12. Set screw; 121. Rotating portion; 1201. Locking cantilever; 1202. Loosening cantilever;

[0040] 20. Tool magazine body; 21. Partition; 2101. Notch; 2101a. First notch; 2101b. Second notch;

[0041] 30. Knife magazine mechanism; 31. Knife magazine body; 32. Knife drag plate; 33. Spring; 34. End cover; 35. Knife outlet;

[0042] 41. Second driver; 42. Drag board; 43. Third driver; 4301. Top block; 4201. Slot;

[0043] 50. Ejector rod;

[0044] 60. Tool; 61. Blade; 62. Toolholder

[0045] 71. Fifth driver; 72. Tool pusher; Tool feeder 721;

[0046] 81. Sixth driver; 82. Rotating arm; 83. Seventh driver; 84. Clamp. DETAILED DESCRIPTION

[0047] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0048] The present invention relates to a tool changing system for a cutting machine, which is used to replace the blade 61 of a cutting machine tool 60. The cutting machine includes a machine tool body, a crossbeam, a machine head and a tool 60. The crossbeam is slidably mounted on the table of the machine tool body, the machine head is slidably mounted on the crossbeam, and the tool 60 is slidably mounted on the machine head. The tool 60 is a high-speed vibrating knife module, which includes a shell, a high-speed motor, a crankshaft connecting rod, a knife rod 62 and a blade 61.

[0049] Example 1

[0050] The tool changing system of the cutting machine of this embodiment includes a tool changing device, a detection device and a control device.

[0051] The tool changing device includes a tool locking assembly and a tool magazine assembly;

[0052] like Figure 1 and Figure 2 As shown, the knife locking assembly includes a knife seat 11 and a set screw 12. The knife seat 11 is installed on the knife rod 62 of the knife 60. Two threaded holes are provided on both sides of the knife seat 11. Two set screws 12 are located in the two threaded holes, one for fixing the knife seat 11 to the knife rod 62, and the other for fixing the blade 61 to the knife rod 62. The tail of the set screw 12 for fixing the blade 61 extends outward to the outside of the knife shell 60 and is provided with a rotating part 121 at the tail end. The rotating part 121 of the set screw 12 is an outer cantilever, which is located on the outside of the knife 60. The outer cantilever is perpendicular to the axial direction of the rotating shaft of the set screw 12, and the outer cantilever is symmetrically arranged, as shown in FIG. Figure 3 As shown, one side is a locking cantilever 1201 and the other side is a releasing cantilever 1202.

[0053] The tool magazine assembly includes a tool magazine body 20, a tool box mechanism 30, a tool feeding mechanism and a trigger unit. The tool magazine body 20 is connected to the edge of the machine tool crossbeam. The tool box mechanism 30 is installed on the tool magazine body 20. The tool feeding mechanism is installed on the tool magazine body 20. The tool box mechanism 30 is used to store blades 61. The tool feeding mechanism is used to take and feed blades 61. The tool locking assembly is installed on the tool head of the cutting tool 60 and is used to loosen or tighten the blade 61 on the tool head. The trigger unit is located on the tool magazine body 20 or the tool feeding mechanism. The trigger unit is used to trigger the rotation portion 121 of the set screw 12 to rotate.

[0054] The trigger unit includes a first actuator (not shown) and a push rod 50. The first actuator is mounted on the tool magazine body 20. The push rod 50 is slidably connected to the tool magazine body 20. The first actuator is connected to the push rod 50 and is used to drive the push rod 50 to move up and down. Furthermore, the top of the push rod 50 is arc-shaped to prevent the push rod 50 from leaving a sharp tip that could damage the cantilever if it hits the cantilever. The outer cantilever of the push rod 50 has an upward curvature, which can ensure smoother rotation of the cantilever when the push rod 50 collides with it, reducing the acceleration of the cantilever during rotation and the impact load at the time of initial contact, thereby avoiding damage to the cantilever and the push rod 50.

[0055] By controlling the tool 60 to move to a specific position, the first driver drives the push rod 50 to rise and contact the loosening cantilever 1202 of the rotating part 121 of the locking screw 12, and triggers the rotation of the rotating part 121. The rotating part 121 drives the locking screw 12 to rotate, unlocking the blade 61, so that the blade 61 can be disengaged and replaced. After replacing the blade 61, the tool 60 adjusts the position locking cantilever 1201 so that the locking screw 12 presses the blade 61 to complete the installation of the new blade 61, realizing rapid unlocking and locking of the blade 61, and facilitating automatic replacement of the blade 61. This structure does not require clamping the blade 61 by an electric or pneumatic clamp, and will not affect the high-speed cutting performance of the blade 61. At the same time, the structure of the original tool 60 does not change, and the original cutting bed can be modified and installed to realize the functional upgrade of automatic tool changing, improve cutting quality and efficiency, and reduce the time and labor cost of manual tool changing.

[0056] like Figure 4 and Figure 5 As shown, the knife box mechanism 30 includes a knife box body 31, a knife drag plate 32 and a spring 33. The box body is connected to the tool magazine body 20 by a snap-on connection, which is convenient for disassembling and replacing the knife box mechanism 30. A cavity is provided inside the knife box body 31 to make room for the stacked blades 61. A knife outlet 35 is provided on the knife box body 31, and a sliding end cover 34 is provided at the knife outlet 35 of the knife box body 31. At the same time, protrusions and grooves are provided on both sides of the knife box body 31 for fixing and positioning the knife box body 31. The knife drag plate 32 is slidably connected to the cavity of the knife box body 31, and the spring 33 is connected between the knife box body 31 and the knife drag plate 32. The entire structure of the knife box type tool magazine is compact and simple in structure. It can store a large number of blades 61, providing a large number of blade 61 storage for the automatic tool changing equipment of the cutting table to ensure that there are enough spare blades.

[0057] like Figures 6 to 8As shown, the knife feeding mechanism includes a second driver 41 and a drag plate 42, the drag plate 42 is slidably connected to the tool magazine body 20, the tool magazine body 20 is provided with a partition 21, the drag plate 42 and the partition 21 fit together, and a knife groove 4201 is provided on the side of the drag plate 42 close to the partition 21, the shape of the knife groove 4201 is the same as the shape of the bottom of the blade 61, the thickness of the knife groove 4201 is the same as the thickness of the blade 61, and the depth of the knife groove 4201 is one third of the length of the blade 61, the second driver 41 is installed on the tool magazine body 20, the second driver 41 is connected to the drag plate 42, and is used to drive the drag plate 42 to slide, and the partition plate 21 is provided with a groove for making way for the knife box body 31, so that the knife outlet 35 of the knife box body 31 can abut against the drag plate 42. The blade 61 in the knife magazine is tightly attached to the carriage 42 by the action of the spring 33. By moving the carriage 42, the knife groove 4201 is aligned with the knife outlet 35. The front blade 61 is pressed into the knife groove 4201 by the action of the spring 33. Since the thickness of the knife groove 4201 is the thickness of one blade 61, only one blade 61 enters the knife groove 4201. The carriage 42 is continued to be moved, and the knife groove 4201 drives the blade 61 in the knife groove 4201 to move it to the specified position. This structure realizes the two actions of taking out and feeding the knife by moving the carriage 42. The structure is simple and has good stability.

[0058] Furthermore, the knife feeding mechanism also includes a third driver 43 and a top block 4301. The third driver 43 is installed on the tool magazine body 20. The partition 21 is provided with a notch 2101. The top block 4301 is located in the notch 2101 of the partition 21. The top block 4301 is connected to the output end of the third driver 43. The top block 4301 is used to tighten the blade 61. The tool magazine assembly also includes a waste box, which is used to collect discarded and ineffective blades 61. The waste box is slidably installed on the tool magazine body 20. The waste box is located below the notch 2101 of the partition 21. An opening is provided at the bottom of the notch 2101 of the partition 21. The opening is connected to the waste box. The top of the opening is an inclined surface to prevent the blade 61 from slipping when a new blade 61 is installed. After the blade 61 fails, move the drag plate 42, align the knife groove 4201 with the notch 2101 of the partition 21, and move the tool 60, such as Figure 9 As shown, the blade 61 is inserted into the knife groove 4201, the third driver 43 drives the top block 4301 to press the blade 61, and the first driver of the trigger unit drives the top rod 50 to move upward, against the loosening cantilever 1202 of the rotating part 121 of the locking screw 12 of the knife locking mechanism, and the blade 61 is unlocked from the tool 60. The tool 60 moves upward, and the failed blade 61 is pulled out by the action of the top block 4301. Then the top block 4301 is released, and the blade 61 falls into the waste box from the bottom opening of the slot 2101, completing the collection of the failed blade 61.

[0059] The information acquisition unit is an image acquisition unit, and the information processing unit is an image processing unit. The light source, image acquisition unit and image processing unit are installed on the machine head or machine tool. The image acquisition unit is connected to the image processing unit, and the image processing unit is connected to the control device. The image acquisition unit is used to acquire fabric incision images, and the image processing unit is used to extract and analyze the fabric incision shape.

[0060] The image acquisition unit includes a lens and a camera, and the image processing unit includes an image acquisition card and a visual processor. The camera, image acquisition card and visual processor are installed on the machine head or machine tool. In this embodiment, the camera is installed on the tool 60 of the machine head, located behind the cutting direction of the tool 60, and can rotate with the tool 60. The lens is installed on the camera, the camera is connected to the image acquisition card, the image acquisition card is connected to the visual processor, and the visual processor is connected to the control device. The image acquisition card controls the camera to collect the incision image of the cut fabric, and then transmits the image information to the visual processor. The visual processor extracts the incision parameters and compares them with the standard incision parameters to determine whether the blade 61 has failed. If the blade 61 has failed, the failure information of the blade 61 is sent to the control device, and the control device controls the shutdown and tool change. The failure of the blade 61 is discovered in time through machine vision, which can avoid the generation of waste, save resources, and reduce costs. At the same time, no manual monitoring is required, saving labor resources, laying the foundation for unmanned tool change.

[0061] The control device is a motion controller with a microprocessor such as a single chip microcomputer as the control core, which is used to control the operation of the first driver, the second driver 41 and the third driver 43. The first driver, the second driver 41 and the third driver 43 can optionally use an electric linear module or a starting linear module.

[0062] like Figure 10 As shown, the specific working process of this embodiment is as follows:

[0063] The information collection unit of the detection device collects the working parameters of the blade 61 and sends the collected working parameters of the blade 61 to the information processing unit. The information processing unit compares them with the standard working parameters to determine whether the blade 61 has failed. If the blade 61 has failed, the failure information is sent to the control device.

[0064] The second driver 41 drives the carriage 42 to move, and aligns the knife groove 4201 with the notch 2101 of the partition plate 21 .

[0065] Upon receiving information indicating blade 61 failure, the control device controls the cutting machine to stop cutting and move the tool 60 to the designated position. In this embodiment, the tool magazine body 20 is located at the edge of the machine tool's crossbeam. The control device controls the machine head to move the tool 60 to the edge of the crossbeam, positioning the tool 61 above the tool slot 4201 of the tool feed mechanism and the release arm 1202 of the tool lock mechanism above the ejector rod 50. The tool 60 is then moved downward, with the bottom of the tool 61 entering the tool slot 4201.

[0066] The third driver 43 is controlled to push the push block 4301 to press the blade 61 .

[0067] The first driver is controlled to drive the push rod 50 to move upward. The push rod 50 is located below the cantilever and aligned with the middle section of the loose cantilever 1202. The tool 60 moves downward. The push rod 50 presses against the loose cantilever 1202 to generate a rotational torque, causing the set screw 12 to rotate and loosen, unlocking the blade 61. After the blade 61 is completely unlocked, the loose cantilever 1202 is located at the top, the locking cantilever 1201 rotates to the bottom, and the push rod 50 is reset.

[0068] The tool 60 is controlled to move upward, and since the blade 61 is unlocked and clamped, the blade 61 is removed from the blade seat 11.

[0069] The third driver 43 is controlled to release the blade 61, and the blade 61 falls into the waste blade box from the bottom opening of the notch 2101 of the partition plate 21.

[0070] Control the second driver 41 to drive the drag plate 42 to move so that the knife groove 4201 is aligned with the knife outlet 35 of the knife box body 31. The blade 61 in the knife box body 31 is pressed into the knife groove 4201 under the action of the spring 33. Control the second driver 41 to move the blade 61 out of the knife to the predetermined position. That is, when the tool 60 is aligned with the new blade 61, the locking cantilever of the screw rotating part is just aligned with the position of the push rod 50.

[0071] The tool 60 is controlled to move. When the tool 60 is aligned with the new blade 61 , the locking cantilever of the rotating portion 121 of the set screw 12 is just aligned with the push rod 50 , the tool 60 is moved down, and the new blade 61 is installed into the tool holder 11 .

[0072] The first driver is controlled to drive the push rod 50 to move upward, and the push rod 50 presses against the locking cantilever 1201 to generate a rotational torque, so that the set screw 12 rotates to lock the blade 61, and the push rod 50 is reset to complete the installation of the new blade 61.

[0073] Example 2

[0074] On the basis of Example 1, a second slot 2101b is provided on the partition 21. For the purpose of distinction, the slot with an opening at the bottom in Example 1 is the first slot 2101a, which is used to unload the blade 61. The second slot is the second slot 2101b, which is used to tighten the new blade 61 when loading the new blade 61. At the same time, two top blocks 4301 are provided on the third driver 43, which are respectively used to clamp the new blade when loading the blade and to tighten the blade when unloading the blade.

[0075] Example 3

[0076] On the basis of Example 1, two push rods 50 can be set, namely the first push rod and the second push rod. The first push rod is driven by the first driver, and the second push rod is driven by the fourth driver. The first push rod is located below the locking cantilever 1201, and the second push rod is located below the loosening cantilever 1202, which are respectively responsible for locking and loosening the blade 61. They can be set on the tool magazine body 20, on both sides of the push block 4301, and the position of the rotating part 121 of the locking screw 12 can be adjusted by rotating the tool 60.

[0077] Example 4

[0078] The tail of the set screw 12 extends outward to the outside of the cutter 60 housing, and a rotating part is provided at the tail end. The rotating part is an external gear, and the external gear is coaxially arranged with the set screw 12.

[0079] The trigger unit is located on the tool magazine body 20 and is used to trigger the rotation of the rotating part of the set screw 12. In this embodiment, the trigger unit is a vertically arranged rack, and the rotating part gear of the set screw 12 is adapted to the rack of the trigger unit.

[0080] Example 5

[0081] The trigger unit is located on the tool magazine body 20 and is used to trigger the rotating part of the set screw 12 to rotate. The rotating part of the trigger unit is a symmetrically arranged cantilever or gear. The trigger unit is a vertically arranged push rod 50 or a vertically arranged rack.

[0082] By controlling the cutter head to move downward, the trigger unit of the tool magazine contacts or contacts the rotating part of the locking screw 12, and triggers the rotating part to rotate. The rotating part drives the locking screw 12 to rotate, unlocking the tool 60, so that the blade 61 can be disengaged and replaced. After replacing the blade 61, the tool 60 is still moved downward, and the trigger unit triggers the rotating part to rotate, so that the locking screw 12 presses against the blade 61, completing the installation of the new blade 61 and realizing the rapid unlocking and locking of the blade 61. The downward movement of the tool 60 is used to make the relative movement between the trigger unit and the rotation to unlock and lock the blade 61. The driving structure of the trigger unit can be omitted, simplifying the structure and reducing costs.

[0083] Example 6

[0084] like Figure 11 As shown, the tool magazine assembly also includes a knife-taking mechanism. The knife magazine mechanism 30 includes a knife magazine body 31, a knife dragging plate 32 and a spring 33. The knife magazine body 31 is connected to the knife magazine body 20 by a snap-on connection. A cavity is provided inside the knife magazine body 31 to make room for the stacked blades 61. A knife feed port is provided at the top right end of the knife magazine body 31. The knife feed port can just accommodate a blade 61 vertically entering the interior of the knife magazine body. A knife outlet 35 is provided at the bottom right end of the knife magazine body 31. The size of the knife outlet 35 is the same as that of the knife feed port. The knife dragging plate 32 is slidably connected to the cavity of the knife magazine body 31, and the spring 33 is connected between the knife magazine body 31 and the knife dragging plate 32.

[0085] The knife-taking mechanism includes a push rod 72 and a fifth driver 71, which are located above the knife feed port of the knife magazine body 31. The feed rod 721 is in the shape of a long plate with the same width and thickness as the blade 61, but is longer in length. A slide groove is provided on the tool magazine body 20, and the push knife is installed in the slide groove. After the push rod 72 pushes the rightmost blade from top to bottom, the push rod 72 occupies the original position of the rightmost tool, so that other blades will not move to the right to block the push rod 72 from returning to its original position. The fifth driver 71 is connected between the push rod 72 and the tool magazine body 20. The fifth driver 71 is used to drive the push rod 72 to move downward. The fifth actuator can use a linear motion module to drive the push rod 72 to move linearly.

[0086] The tool feeding mechanism includes a sixth driver 81, a rotating arm 82, and a clamp 84. The rotating arm 82 is rotatably connected to the tool magazine body 20. The sixth driver 81 is connected to the rotating shaft of the rotating arm 82 and is used to drive the rotating arm 82 to rotate. The clamp 84 is connected to the rotating arm 82 and is used to clamp the blade 61. The rack of the trigger unit is set on the rotating arm 82. The tool magazine body 20 is also provided with a tool feeding mechanism for feeding the blade 61 into the clamp 84. The tool magazine assembly also includes a seventh driver 83. The seventh driver 83 is connected between the rotating arm 82 and the clamp 84 and is used to drive the clamp 84 to clamp the blade 61. The sixth driver 81 and the seventh driver 83 can optionally be servo motors.

[0087] When the blade fails, the tool 60 is driven to move upward, the rotating arm 82 of the knife feeding mechanism gives way, and the sixth driver 81 is controlled to rotate so that the clamp 84 on the rotating arm 82 is located below the blade 61 of the tool 60. The rack of the trigger unit is located in the external tangent direction of the gear of the rotating part of the set screw 12, and then the tool 60 is driven to move downward. During the downward movement, on the one hand, the external gear of the rotating part of the set screw 12 engages with the rack, and the rotating part rotates, causing the set screw 12 to rotate and loosen the blade 61. On the other hand, the blade 61 of the tool 60 falls into the clamp 84, and the seventh driver 83 is controlled to clamp the failed blade. Then drive the tool 60 to move upward, pull out the failed blade from the cutter head of the tool 60, drive the seventh driver 83 to rotate the rotating arm 82, the rotating arm 82 rotates back into the tool magazine, loosens the clamp 84, and allows the failed blade to enter the waste blade box, then drives the tool taking mechanism to send the new blade into the clamp 84, the clamp 84 clamps the blade, rotates the rotating arm 82, and sends the new blade under the cutter head, then controls the tool 60 to move downward, so that the blade 61 is inserted into the tool holder 11, loosens the clamp 84, and the blade rises with the tool holder 11 under the action of the pre-tightening force of the tool holder 11, and the rotating part rotates in the opposite direction under the drive of the rack, locking the screw to tighten the blade, retracts the rotating arm 82, and completes the replacement of the new blade.

[0088] Example 7

[0089] The rotating part of the blade locking screw is the clutch driven plate. The contact unit includes a fourth drive unit and a clutch active plate. The fourth drive unit is connected to the tool magazine body 20, and the clutch active plate is connected to the output shaft of the fourth drive unit. The fourth drive unit is a servo motor. The clutch can be a friction clutch or a dog clutch. After the clutch is engaged, the servo motor rotates forward and reverse to unlock and release the blade 61.

[0090] In some other embodiments, the control device is a motion controller with an application specific chip (ASIC) as the core processor, or an open motion controller based on a PC bus with a DSP or FPGA as the core processor.

[0091] In the description of this application, unless otherwise expressly specified or limited, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this invention can be understood according to the specific circumstances.

[0092] In the description of this specification, it should be understood that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described from the perspectives shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0093] Although the above embodiments have been described herein, this does not limit the scope of patent protection of the present invention. Therefore, based on the innovative concept of the present invention, changes and modifications to the embodiments described herein, or equivalent structural or process transformations made using the contents of the present invention's specification and drawings, and direct or indirect application of the above technical solutions to other related technical fields, are all included in the scope of patent protection of the present invention.

Claims

1. A cutting bed tool changing system, characterized by: Including tool changing device, detection device and control device; The tool changing device includes a tool locking assembly and a tool magazine assembly; The knife locking assembly includes a knife seat and a set screw, wherein the knife seat is mounted on the knife bar of the tool, the set screw is located in the knife seat, and the tail of the set screw is provided with a rotating part; The tool magazine assembly includes a tool magazine body, a tool box mechanism, a tool feeding mechanism and a trigger unit. The tool magazine body is connected to the machine tool, the tool box mechanism is installed on the tool magazine body, the tool feeding mechanism is installed on the tool magazine body, the tool box mechanism is used to store blades, the tool feeding mechanism is used to take and feed blades, the tool locking assembly is installed on the tool head of the cutting tool, and is used to loosen or tighten the blade on the tool head. The trigger unit is located on the tool magazine body or the tool feeding mechanism, and is used to trigger the rotation of the rotating part of the set screw; The control device is installed on the machine head or the machine tool, and the control device is connected to the tool changing device; The detection device is installed on the machine head or the machine tool, and includes an information acquisition unit and an information processing unit. The information acquisition unit is connected to the information processing unit, and the information processing unit is connected to the control device. The detection device is used to detect whether the blade is invalid; The rotating part of the set screw is an outer cantilever, the outer cantilever is perpendicular to the axis of the rotating shaft of the set screw, the outer cantilever is symmetrically arranged, and the rotating part of the set screw is located outside the cutting tool; The trigger unit further includes a first driver and a push rod, wherein the first driver is provided on the tool feeding mechanism, the push rod is slidably connected to the tool feeding mechanism or the tool magazine body, and the first driver is connected to the push rod, and the first driver is used to drive the push rod to move up and down; The knife box mechanism includes a knife box body, a knife dragging plate and a spring. The knife box body is connected to the tool magazine body. A cavity is provided inside the knife box body to make room for the stacked blades. The knife box body is provided with a knife outlet. The knife dragging plate is slidably connected to the cavity of the knife box body. The spring is connected between the knife box body and the knife dragging plate. The knife feeding mechanism includes a second driver and a drag plate, the drag plate is slidably connected to the tool magazine body, a partition is provided on the tool magazine body, the drag plate and the partition fit together, a knife groove is provided on a side of the drag plate close to the partition, the second driver is installed on the tool magazine body, the second driver is connected to the drag plate, and is used to drive the drag plate to slide, and the knife outlet of the tool magazine body abuts against the drag plate.

2. The cutting tool changing system according to claim 1, characterized in that: The tool feeding mechanism also includes a third driver and a top block. The third driver is installed on the tool magazine body. A notch is provided on the partition. The top block is located in the notch of the partition. The top block is connected to the output end of the third driver and is used to tighten the blade.

3. The cutting tool changing system according to claim 2, characterized in that: The tool magazine assembly also includes a waste box, which is installed on the tool magazine body and is located below the partition slot. An opening is provided at the bottom of the partition slot.

4. The cutting machine tool changing system according to claim 1, characterized in that: The information acquisition unit is an image acquisition unit, and the information processing unit is an image processing unit. The image acquisition unit and the image processing unit are installed on the machine head or the machine tool. The image acquisition unit is connected to the image processing unit, and the image processing unit is connected to the control device. The image acquisition unit is used to acquire fabric incision images, and the image processing unit is used to extract and analyze the fabric incision shape.

5. The cutting tool changing system according to claim 1, characterized in that: The control device is a single chip microcomputer or a PLC controller.

6. A control method for a cutting machine tool changing system, characterized in that: The cutting table tool changing system according to any one of claims 1 to 5 comprises the following steps: Step 1: The information collection unit of the detection device collects the blade operating parameters and sends the collected blade operating parameters to the information processing unit. The information processing unit compares the collected blade operating parameters with the standard operating parameters to determine whether the blade has failed. If the blade has failed, the failure information is sent to the control device; Step 2: The control device receives the blade failure information, controls the cutting bed to stop cutting, and moves the tool to the designated position; Step 3: The control device controls the trigger unit to trigger the set screw rotating part to rotate, thereby loosening the blade on the cutter head; Step 4: The control device controls the knife feeding mechanism to move the blade into the tool magazine assembly; Step 5: The control device controls the knife feeding mechanism to take out a new blade from the knife box mechanism; Step 6: The control device controls the trigger unit to trigger the set screw rotating part to rotate, thereby locking the blade on the cutter head.

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