A guillotine cutting machine tool changer device and system

Abstract

The application relates to a cutting bed tool changing device and a system thereof, which comprises a shell, a cam assembly, a tool arm assembly, a pressing plate assembly and a tool feeding assembly. Three groups of intermittent actions are realized through a composite index cam, tool changing actions, tool feeding actions and pressing actions are respectively completed, all tool changing actions can be realized only by driving a servo motor, the characteristics of small and thin blades are fully utilized, that is, a right end surface groove cam drives a right rotating arm to push a blade, the action of moving the blade to a clamping mechanism is completed, a left end surface groove cam drives a left rotating arm to clamp the blade, the dismounting and mounting of a blade on a tool are facilitated, a composite arc surface index cam is used to replace new and old blades, the whole structure is exquisite, can be installed on a head of the cutting bed, and can realize automatic tool changing by cooperating with the up-down movement of the tool, replaces manual blade state supervision and blade replacement, and can greatly improve cutting quality and efficiency, reduce production cost, reduce time and manpower cost of manual tool changing.

Description

Technical Field

[0001] The present invention relates to the field of automatic tool changing equipment for cutting tables, and in particular to a tool changing device and system for cutting tables. 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 tool blade deformation and breakage 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 needs to be replaced manually. 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 addition, some tool changing devices use a robotic arm equipped with a special fixture to perform automatic tool changing. However, the tool changing process includes loosening the existing blade, removing the old blade, installing the new blade and tightening the new blade. The movements are cumbersome and require a robotic arm with multiple movable axes, which is costly. Moreover, the robotic arm can only complete one of the movements of loosening the existing blade, removing the old blade, installing the new blade and tightening the new blade at a time, resulting in low tool changing efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a cutting table blade changing system to solve the problem that manual blade replacement will affect the working efficiency and quality of the cutting table, consume manpower, increase costs, and be detrimental to the unmanned development of the cutting room.

[0005] In addition, the present application provides a cutting table tool changing device, which aims to solve the technical problems that the existing tool changing device is driven by a robotic arm, has high cost and low tool changing efficiency. It has a compact structure and high tool changing efficiency.

[0006] To achieve the above-mentioned purpose, the inventor provides a cutting bed tool changing device, comprising a housing, a cam assembly, a knife arm assembly, a pressure plate assembly and a knife feeding assembly;

[0007] The cam assembly includes a driving shaft, a compound cambered indexing cam, a driven shaft, and a roller. The compound cambered indexing cam is composed of a cambered indexing cam, a left end face groove cam, and a right end face groove cam. The compound cambered indexing cam is mounted on the housing via the driving shaft, and the roller is mounted on the housing via the driven shaft. The roller is engaged with the cambered indexing cam.

[0008] The knife arm assembly includes a clamping mechanism and a knife arm, wherein the knife arm is connected to the bottom of the driven shaft, and the clamping mechanism is installed on the knife arm, and the clamping mechanism is used to clamp the blade;

[0009] The clamping assembly includes a left swing arm and a pressure plate, the pressure plate is slidably connected to the shell or the driven shaft, the pressure plate is used to drive the clamping mechanism, one end of the left swing arm is rotatably connected to the shell, the left swing arm is provided with a first roller, the first roller is adapted to the groove of the left end face groove cam, and the other end of the left swing arm is connected to the pressure plate.

[0010] The knife feeding assembly includes a right swing arm and a knife pushing rod, the knife pushing rod is slidably connected to the shell, the knife pushing rod is used to push the blade, one end of the right swing arm is rotatably connected to the shell, the right swing arm is provided with a second roller, the second roller is adapted to the groove of the right end face groove cam, and the other end of the right swing arm is connected to the knife pushing rod.

[0011] As a preferred structure of the present invention, the clamping assembly also includes a sleeve, the pressure plate is connected to the bottom of the sleeve, the sleeve is sleeved on the driven shaft, an annular groove is provided on the top of the sleeve, and the sleeve is connected to the left swing arm through the annular groove.

[0012] As a preferred structure of the present invention, the clamping mechanism includes a first positioning block, a first push rod, a first pressure rod, a connecting rod and a first spring. The first positioning block is connected to the knife arm, and a knife groove is provided on the first positioning block. The side of the knife groove is provided with a through hole for making way for the first push rod. The first push rod is connected in the through hole, one end of the first pressure rod is hinged to the tail end of the first push rod, one end of the connecting rod is hinged to the knife arm, and the other end is hinged to the first pressure rod. The first spring is connected between the push rod and the knife arm.

[0013] As a preferred structure of the present invention, the clamping mechanism includes a second positioning block, a second push rod, and a second pressure rod. The second positioning block is connected to the knife arm, and a knife groove is provided on the second positioning block. The side of the knife groove is provided with a through hole to make way for the second push rod. The second push rod is connected in the second through hole, and one end of the second pressure rod is hinged to the tail end of the push rod, and the other end is hinged to the pressure plate.

[0014] As a preferred structure of the present invention, the tool changing device also includes a knife magazine subassembly, and the knife magazine assembly includes a knife magazine body, a knife drag plate and a second spring. The knife magazine body is connected to the shell, and a cavity is provided inside the knife magazine body to make room for the stacked blades. The knife magazine body is provided with a knife inlet and a knife outlet, and the knife drag plate is slidably connected to the cavity of the knife magazine body. The second spring is connected between the knife magazine body and the knife drag plate.

[0015] As a preferred structure of the present invention, the tool changing device further comprises a waste tool box, which is located below the tool arm and is used to collect failed blades.

[0016] As a preferred structure of the present invention, the tool changing device further includes a limiting assembly, which is mounted on the tool arm or the tool box assembly and is used to apply a pre-tightening force to the blade in the tool slot.

[0017] As a preferred structure of the present invention, the limiting assembly includes a limiting spring and a limiting plate, the limiting plate is located on the side wall of the knife groove, and the limiting spring is connected between the limiting plate and the first positioning block.

[0018] As a preferred structure of the present invention, there are two knife arms, the angle between the two knife arms is 180 degrees or 90 degrees, and each knife arm is provided with a clamping mechanism.

[0019] As a preferred structure of the present invention, the tool changing device also includes a driving assembly, the driving assembly includes a driver and a worm, the cam compound arc surface indexing cam is provided with worm gear teeth, the driver is installed on the housing, the worm is connected to the driver output shaft, and the worm is meshed with the worm gear teeth.

[0020] Different from the prior art, the present invention provides a cutting table tool changing device, comprising a housing, a cam assembly, a knife arm assembly, a pressure plate assembly, and a knife feeding assembly. Three sets of intermittent actions are realized through a composite indexing cam, which respectively complete the tool changing action, the knife feeding action, and the pressing action. Only one servo motor drive is required to realize all the tool changing actions, and the small and thin characteristics of the blade are fully utilized. That is, the right end face groove cam is used to drive the right rotating arm to push the blade to complete the action of moving the blade to the clamping mechanism, and the left end face groove cam is used to drive the left rotating arm to clamp the blade, which is convenient for the disassembly and assembly of the blade on the tool. The composite arc surface indexing cam is used to complete the replacement of the old and new blades. The entire structure is sophisticated and can be installed on the head of the cutting table. The up and down movement of the tool can realize automatic tool changing, replacing manual blade status monitoring and blade replacement. It can greatly improve cutting quality and efficiency, reduce production costs, and reduce the time and labor costs of manual tool changing.

[0021] Correspondingly, the present invention also provides a cutting bed tool changing system, comprising a detection device, a control device and the above-mentioned cutting bed tool changing device;

[0022] The cutting machine tool changing device is installed on the cutting machine head or the machine tool;

[0023] The control device is installed on the machine head or the machine tool, and the control device is connected to the cutting machine tool changing device;

[0024] The detection device is installed on the machine head or 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 unit is used to detect whether the blade is invalid.

[0025] The detection device is used to detect the blade status online in real time, and the control device is used to control the tool changing device to automatically change the tool, thereby realizing an unmanned tool changing process, avoiding the blade from continuing to work after failure, resulting in excessive waste, and replacing manual blade status supervision and blade replacement, which can greatly improve cutting quality and efficiency, reduce waste generation, reduce production costs, and reduce the time and labor costs of manual tool changing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of a tool changing device according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the tool changing device according to one embodiment of the present invention with the housing removed;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the tool changing device according to one embodiment of the present invention with the housing removed;

[0029] Figure 4 This is a front view of the tool changing device according to one embodiment of the present invention with the housing removed;

[0030] Figure 5 A partial cross-sectional view of a driven shaft of a tool changing device according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of a tool magazine assembly of a tool changing device according to an embodiment of the present invention;

[0032] Figure 7 This is a cross-sectional view of a tool magazine assembly of a tool changing device according to an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 10. Housing; 11. Bracket

[0035] 21. Compound cambered indexing cam; 211. Cambered indexing cam; 212. Left end face groove cam; 213. Right end face groove cam; 22. Driving shaft; 23. Driven shaft; 24. Roller;

[0036] 31. Knife arm; 32. First positioning block; 3201. Knife groove; 33. First push rod; 34. First pressure rod; 35. Connecting rod; 36. First spring;

[0037] 41. Left swing arm; 4101. First roller; 42. Pressing plate; 43. Sleeve; 44. Sleeve seat;

[0038] 51. Right swing arm; 5101. Second roller; 52. Push rod;

[0039] 60. Knife magazine assembly; 61. Knife magazine body; 6101. Knife inlet; 6102. Knife outlet; 62. Second spring; 63. Knife drag plate; 64. Sliding cover;

[0040] 71. Worm; 72. Worm gear; 73. Driver;

[0041] 80. Blade. DETAILED DESCRIPTION

[0042] 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.

[0043] The present invention relates to a tool changing system for a cutting machine, which is used for replacing the blade of a cutting machine tool. The cutting machine includes a machine tool body, a crossbeam, a machine head and a tool. 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 is slidably mounted on the machine head. The tool is a high-speed vibrating knife module, which includes a housing, a high-speed motor, a crankshaft connecting rod, a knife rod and a blade. The blade is fixed to the knife rod by a knife locking mechanism.

[0044] Example 1

[0045] See also Figures 1 to 7 , this embodiment provides a cutting bed tool changing device, including a housing 10, a cam assembly, a knife arm assembly, a pressure plate assembly and a knife feeding assembly;

[0046] The cam assembly includes a driving shaft 22, a compound arc surface indexing cam 21, a driven shaft 23 and a roller 24. The compound arc surface indexing cam 21 consists of an arc surface indexing cam 211, a left end face groove cam 212 and a right end face groove cam 213. The compound arc surface indexing cam 21 is installed on the driving shaft 22 by a key connection. The driving shaft 22 is installed on the housing 10 through a bearing. The roller 24 is installed on the driven shaft 23 by a key connection. The driven shaft 23 is installed in the housing 10 through a bearing. The bottom end of the driven shaft 23 extends to the outside of the housing 10, and the roller 24 engages with the arc surface indexing cam 211.

[0047] The knife arm 31 assembly includes a clamping mechanism and a knife arm 31. There are two knife arms 31, which are perpendicular to the driven shaft 23 and symmetrically connected to the bottom of the driven shaft 23. The angle between the two knife arms 31 is 180 degrees. The two knife arms 31 are provided with a clamping mechanism with the same structure.

[0048] The clamping mechanism is installed on the knife arm 31, and the clamping mechanism is used to clamp the blade 80. The clamping mechanism includes a first positioning block 32, a first push rod 33, a first pressure rod 34, a connecting rod 35 and a first spring 36. The first positioning block 32 is connected to the outer side of the knife arm 31, and a knife groove 3201 is provided on the first positioning block 32 (the knife groove 3201 runs through the entire first positioning block 32, and the width and thickness of the knife groove 3201 are the same as or slightly larger than the width and thickness of the blade 80). A through hole is provided on the side of the knife groove 3201 to make way for the first push rod 33. The first push rod 33 is connected in the through hole, and one end of the first pressure rod 34 is hinged to the tail end of the first push rod 33. One end of the connecting rod 35 is hinged to the knife arm 31, and the other end is hinged to the first pressure rod 34. The first spring 36 is sleeved on the first push rod 33 and connected between the push rod and the knife arm 31.

[0049] The clamping assembly includes a left swing arm 41, a pressure plate 42 and a sleeve 43. The pressure plate 42 is connected to the bottom of the sleeve 43. The pressure plate 42 is used to drive the clamping mechanism. The sleeve 43 is sleeved on the driven shaft 23. The bottom end of the sleeve 43 extends to the outside of the shell 10. The top of the sleeve 43 is provided with an annular groove. The sleeve 43 is connected to the left swing arm 41 through the annular groove. The sleeve 43 is rotatably connected to the shell 10 through the sleeve seat 44. One end of the left swing arm 41 is rotatably connected to the shell 10 through a bearing. A slider is provided on the other end of the left swing arm 41. The slider is rotatably connected to the left swing arm 41 and is embedded in the annular groove of the sleeve 43 when engaged. A first roller 4101 is provided on the left swing arm 41, and the first roller 4101 is adapted to the groove of the left end face groove cam 212.

[0050] The knife feeding assembly includes a right swing arm 51 and a knife pushing rod 52. The sliding portion of the knife pushing rod 52 is slidably connected to the bracket 11 at the bottom of the shell 10. The pushing portion of the knife pushing rod 52 is used to push the blade 80. The thickness and width of the pushing portion of the knife pushing rod 52 are less than or equal to the thickness and width of the blade 80, and the length is greater than the length of the blade 80. The middle section of the right swing arm 51 is rotatably connected to the shell 10 through a bearing. The inner end is located inside the shell 10, and a second roller 5101 is provided on the inner end. The second roller 5101 is adapted to the groove of the right end face groove cam 213. The outer end is located outside the shell 10, and a slide groove is provided on the outer end. A slider is provided on the knife pushing rod 52, and the slide groove and the slider are adapted to each other.

[0051] like Figure 6 and Figure 7The knife changing device also includes a knife magazine assembly. The knife magazine assembly 60 includes a knife magazine body 61, a knife drag plate 63 and a second spring 62. The knife magazine body 61 is connected to the shell body 10 through a bracket 11. The knife magazine body 61 is connected to the bracket 11 by a snap connection and is located on the outside of the shell 10. A cavity is provided inside the knife magazine body 61 to make room for the stacked blades 80. Sliding covers 64 are provided at both ends of the knife magazine body 61 to facilitate the installation of the blades 80. A knife feed port 6101 is provided at the top of one end of the knife magazine body 61, and a knife outlet port 6102 is provided at the bottom. The knife feed port 6101 is located below the knife push rod 52. The knife drag plate 63 is slidably connected to the cavity of the knife magazine body 61, and the second spring 62 is connected between the knife magazine body 61 and the knife drag plate 63.

[0052] The limiting assembly includes a limiting spring and a limiting plate. The limiting plate is located on the side wall of the knife groove 3201. The limiting spring is connected between the limiting plate and the first positioning block 32. The limiting assembly is used to apply a pre-tightening force to the blade 80 in the knife groove 3201. When the blade 80 is inserted into the knife groove 3201, the limiting plate presses against the blade 80 under the action of the limiting spring to prevent the blade 80 from falling.

[0053] The tool changing device further comprises a waste tool box, which is detachably mounted on the bracket 11 of the housing 10 and is located below the tool arm 31 . The waste tool box is used to collect failed blades 80 .

[0054] The tool changing device also includes a driving assembly, which includes a servo driver 73 and a worm 71. A worm gear 72 is provided on the arc surface indexing cam 211. The driver 73 is installed on the housing 10. The worm 71 and the output shaft of the driver 73 are connected through a coupling, and the worm 71 is meshed with the worm gear 72.

[0055] When the blade 80 on the blade 80 tool fails, the driver 73 drives the compound arc surface indexing cam 21 to rotate, and the tool changing device works in the following sequence;

[0056] Step 1: The roller 24 enters the lifting section of the cambered indexing cam 211. The cambered indexing cam 211 pushes the roller 24 to rotate 90 degrees, that is, the knife arm 31 rotates 90 degrees, so that one knife arm 31 rotates under the tool, and the blade 80 is aligned with the knife groove 3201. The other knife arm 31 rotates under the knife box body 61, and the knife outlet 6102 is aligned with the other knife groove 3201. (In this process, the first roller 4101 is located at the far rest end of the left end face groove cam 212, and the second roller 5101 is located at the near rest end of the right end face groove cam 213)

[0057] Step 2: Roller 24 enters the stationary section of the arc-surface indexing cam 211, causing the blade arm 31 to stop rotating. The first roller 4101 is located at the far resting end of the left end face groove cam 212, and the second roller 5101 enters the lifting section of the right end face groove cam 213, driving the right swing arm 51 to swing downward, pushing the push rod 52 downward. The push rod 52 enters the blade magazine body 61 from the blade inlet 6101, pushing the new blade 80 downward from the blade outlet 6102. The new blade 80 is pushed into the blade slot 3201 of the lower blade arm 31, occupying the position of the original failed blade 80. Under the push of the new blade 80, the failed blade 80 falls into the waste blade box below the blade slot 3201. (During the first cycle, there is no failed blade 80 in the blade slot 3201, and the failed blade 80 will not fall naturally due to the action of the limit assembly.) At the same time, the tool moves downward, inserting the failed blade 80 on the tool into the blade slot 3201 of the other blade arm 31.

[0058] Step 3: The first roller 4101 enters the return section of the left end face groove cam 212, driving the left swing arm 41 to swing upward, pushing the sleeve 43 upward, and the pressure plate 42 moves away from the first pressure rods 34 on both sides of the knife arm 31. The first push rod 33, under the action of the first spring 36, presses the blades 80 on both sides. At the same time, the second roller 5101 enters the return section of the right end face groove cam 213, driving the right swing arm 51 to swing upward, pushing the push rod 52 to move upward and withdraw from the knife inlet 6101. The blade 80 in the knife box body 61 moves forward under the action of the second spring 62, and enters the ready-to-install state.

[0059] Step 4: The first roller 4101 enters the near-rest section of the left end face groove cam 212, and the second roller 5101 enters the near-rest section of the right end face groove cam 213. The tool locking mechanism releases the disabled blade 80 and controls the tool to move upward.

[0060] Step 5: The roller 24 enters the second lift section of the cambered indexing cam 211. The cambered indexing cam 211 pushes the roller 24 to rotate 180 degrees, that is, the knife arm 31 rotates 180 degrees, and the new blade 80 is rotated to the bottom of the tool, and the failed blade 80 is rotated to the bottom of the tool magazine body.

[0061] Step 6: The roller 24 enters the stationary section of the arc surface indexing cam 211 , the knife arm 31 stops, the tool moves downward, and the new blade 80 enters the knife locking mechanism, which locks the blade 80 .

[0062] Step 7: The first roller 4101 enters the lifting section of the left end face groove cam 212, driving the left swing arm 41 to swing downward, pushing the sleeve 43 to move downward, and the pressure plate 42 presses against the first pressure rod 34 on both sides of the knife arm 31 to move downward. The first pressure rod 34 drives the first push rod 33 to move out of the knife groove 3201 under the action of the connecting rod 35. The failed blade 80 will not fall under the action of the limiting assembly. The tool moves up and leaves the tool changing device, completing the replacement of the tool blade 80.

[0063] Step 8: The first roller 4101 enters the far rest section of the left end face groove cam 212. The roller 24 enters the lifting section of the arc surface indexing cam 211. The arc surface indexing cam 211 pushes the roller 24 to rotate 90 degrees, that is, the knife arm 31 rotates 90 degrees and returns to standby, completing a knife change cycle.

[0064] This embodiment realizes three groups of intermittent actions through the composite indexing cam, which respectively complete the tool changing action, the tool feeding action and the pressing action. Only one servo motor drive is required to realize all the tool changing actions, and fully utilizes the small and thin characteristics of the blade 80, that is, the right end surface groove cam 213 is used to drive the right rotating arm to push the blade 80, completing the action of the blade 80 moving to the clamping mechanism, and the left end surface groove cam 212 is used to drive the left rotating arm to clamp the blade 80, which is convenient for the disassembly and assembly of the blade 80 on the tool, and the composite arc surface indexing cam 21 is used to complete the replacement of the old blade 80 with the new blade. The entire structure is sophisticated and can be installed on the head of the cutting machine. Automatic tool changing can be realized by cooperating with the up and down movement of the tool, replacing the manual supervision of the blade 80 status and the blade 80 replacement, which can greatly improve the cutting quality and efficiency, reduce production costs, and reduce the time and labor costs of manual tool changing.

[0065] Example 2

[0066] When the pressure plate 42 and the clamping mechanism are non-contact connected, the first pressure plate 42 can be connected to the left swing arm 41 through a push rod. The push rod is slidably connected to the shell 10 and extends downward through the shell 10. The top of the push rod is connected to the left swing arm 41, and the bottom is connected to the first pressure plate 42. The left swing arm 41 swings, pushing the push rod up and down, thereby driving the first pressure plate 42 to move up and down. The driven shaft 23 can be connected to the shell 10 through a bearing. There is no need to set a sleeve 43 outside the driven shaft 23, and the structure is simpler.

[0067] Example 3

[0068] As an alternative to the tightening mechanism, the clamping mechanism includes a second positioning block, a second push rod, and a second pressure rod. The second positioning block is connected to the knife arm 31, and the second positioning block is provided with a knife groove 3201. The side of the knife groove 3201 is provided with a through hole for making way for the second push rod. The second push rod is connected in the through hole, and one end of the second pressure rod is hinged to the tail end of the second push rod, and the other end is hinged to the second pressure plate 42. The second push rod is pushed by directly hinged to the second push rod and the second pressure plate 42. The second pressure plate 42 is connected to the bottom of the sleeve 43, and the sleeve 43 is required to rotate with the knife arm 31. Therefore, the driven shaft 23 is a square shaft, and the inner square and outer circle of the sleeve 43 is sleeved on the driven shaft 23, so that the sleeve 43 can move up and down and rotate with the driven shaft 23. When the second pressure plate 42 moves down, it drives the pressure rod to move toward the blade 80 and presses the blade 80. When the second pressure plate 42 moves down, it drives the pressure rod away from the blade 80 and releases the blade 80. The structure is simpler.

[0069] Example 4

[0070] As an alternative to the tightening mechanism, the drive assembly includes a large bevel gear and a small bevel gear, a gear shaft, the large bevel gear is connected to the side of the compound indexing cam, the small bevel gear is installed on the gear shaft, and the gear shaft is connected to the driver 73 through a coupling.

[0071] Example 5

[0072] The knife arm 31 can be adjusted according to the layout, and a single knife arm 31 or a double knife arm 31 can be provided. In the case of a double knife arm 31 , the angle between the two knife arms 31 can be set to 90 degrees or other angles as needed.

[0073] Example 6

[0074] The knife feeding assembly includes a right swing arm 51 and a knife pushing rod 52. The knife pushing rod 52 is slidably connected to the shell 10. The thickness and width of the knife pushing rod 52 are less than or equal to the thickness and width of the blade 80, and the length is greater than the length of the blade 80. The knife pushing rod 52 is used to push the blade 80. One end of the right swing arm 51 is rotatably connected to the shell 10 through a bearing. A second roller 5101 is provided on the right swing arm 51. The second roller 5101 is adapted to the groove of the right end face groove cam 213. The other end of the right swing arm 51 is connected to the knife pushing rod 52 through a transmission structure. In this embodiment, the intermediate rod is hinged at a fixed end on the right swing arm 51, and the bottom end extends to the outside of the shell 10. The knife pushing rod 52 is connected to the bottom of the intermediate rod.

[0075] In order to realize automatic tool changing, the inventors also provide a cutting bed tool changing system, which includes the above-mentioned cutting bed tool changing device, a detection device and a control device;

[0076] The cutting machine tool changer is installed on the cutting machine head or machine tool;

[0077] The control device is installed on the machine head or machine tool, and is connected to the cutting bed tool changing device;

[0078] The detection device is installed on the machine head or 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 unit is used to detect whether the blade is invalid.

[0079] 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.

[0080] 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 of the machine head, located behind the cutting direction of the tool, and can rotate with the tool. 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 has failed. If the blade has failed, the blade failure information is sent to the control device, and the control device controls the shutdown and tool change. The blade failure is discovered in time by 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.

[0081] 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 movement of the cutting bed tool changing device.

[0082] 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.

[0083] 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.

[0084] It should be noted that 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 equivalent 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 device, characterized in that: It includes a housing, a cam assembly, a knife arm assembly, a pressure plate assembly and a knife feeding assembly; The cam assembly includes a driving shaft, a compound cambered indexing cam, a driven shaft, and a roller. The compound cambered indexing cam is composed of a cambered indexing cam, a left end face groove cam, and a right end face groove cam. The compound cambered indexing cam is mounted on the housing via the driving shaft, and the roller is mounted on the housing via the driven shaft. The roller is engaged with the cambered indexing cam. The knife arm assembly includes a clamping mechanism and a knife arm, wherein the knife arm is connected to the bottom of the driven shaft, and the clamping mechanism is installed on the knife arm, and the clamping mechanism is used to clamp the blade; The pressure plate assembly includes a left swing arm and a pressure plate, the pressure plate is slidably connected to the driven shaft, the pressure plate is used to drive the clamping mechanism, one end of the left swing arm is rotatably connected to the housing, the left swing arm is provided with a first roller, the first roller is adapted to the groove of the left end face groove cam, and the other end of the left swing arm is connected to the pressure plate; The knife feeding assembly includes a right swing arm and a knife pushing rod, the knife pushing rod is slidably connected to the housing, the knife pushing rod is used to push the blade, one end of the right swing arm is rotatably connected to the housing, the right swing arm is provided with a second roller, the second roller is adapted to the groove of the right end surface groove cam, and the other end of the right swing arm is connected to the knife pushing rod; The pressure plate assembly further includes a sleeve, the pressure plate is connected to the bottom of the sleeve, the sleeve is sleeved on the driven shaft, an annular groove is provided on the top of the sleeve, and the sleeve is connected to the left swing arm through the annular groove; The tool changing device also includes a knife magazine assembly, which includes a knife magazine body, a knife dragging plate and a second spring. The knife magazine body is connected to the shell, and a cavity is provided inside the knife magazine body to make room for the stacked blades. The knife magazine body is provided with a knife inlet and a knife outlet, and the knife dragging plate is slidably connected to the cavity of the knife magazine body. The second spring is connected between the knife magazine body and the knife dragging plate.

2. The cutting machine tool changing device according to claim 1, characterized in that: The clamping mechanism includes a first positioning block, a first push rod, a first pressure rod, a connecting rod and a first spring. The first positioning block is connected to the knife arm. The first positioning block is provided with a knife groove. The side of the knife groove is provided with a through hole for making way for the first push rod. The first push rod is connected in the through hole. One end of the first pressure rod is hinged to the tail end of the first push rod. One end of the connecting rod is hinged to the knife arm, and the other end is hinged to the first pressure rod. The first spring is connected between the first push rod and the knife arm.

3. The cutting machine tool changing device according to claim 1, characterized in that: The clamping mechanism includes a second positioning block, a second push rod, and a second pressure rod. The second positioning block is connected to the knife arm. The second positioning block is provided with a knife groove. The side of the knife groove is provided with a through hole to make way for the second push rod. The second push rod is connected in the through hole. One end of the second pressure rod is hinged to the tail end of the second push rod, and the other end is hinged to the second pressure plate.

4. The cutting machine tool changing device according to claim 1, characterized in that: The tool changing device further comprises a waste tool box, which is located below the tool arm and is used for collecting invalid blades.

5. The cutting bed tool changing device according to claim 1, characterized in that: The tool changing device further comprises a limiting assembly, which is mounted on the tool arm and is used to apply a pre-tightening force to the blade in the tool groove.

6. The cutting machine tool changing device according to claim 5, characterized in that: The limiting assembly includes a limiting spring and a limiting plate. The limiting plate is located on the side wall of the knife groove, and the limiting spring is connected between the limiting plate and the first positioning block.

7. The cutting machine tool changing device according to claim 1, characterized in that: The tool changing device also includes a driving assembly, which includes a driver, worm gear and a worm. The compound arc surface indexing cam is provided with worm gear. The driver is installed on the housing. The worm is connected to the driver output shaft, and the worm is meshed with the worm gear.

8. A cutting bed tool changing system, characterized by: It comprises a detection device, a control device and a cutting bed tool changing device according to any one of claims 1 to 7; The cutting machine tool changing device is installed on the cutting machine head or the machine tool; The control device is installed on the machine head or the machine tool, and the control device is connected to the cutting machine tool changing device; 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.

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