Tool changing device, cutting machine and automatic tool changing method

Abstract

The invention discloses a tool changing device, a cutting machine and an automatic tool changing method. The tool changing device comprises a tool magazine assembly, a tool lifting assembly, a driving part, a storage part, a clamping assembly and a detection device. The tool magazine assembly comprises an installation support and a tool magazine body, the tool magazine body is arranged on the installation support in the mode that the tool magazine body can move in the horizontal plane, and an alignment structure is arranged on the tool magazine body and used for being matched with the sliding-down tool rest to achieve automatic alignment. The storage part is arranged on one side of the tool magazine assembly, the magnetic element of the storage part can switch the magnetic force effect, so that the storage part is switched between the adsorption state and the release state, and mute storage and convenient taking-out of the tools are achieved. Passive self-adaptive alignment of the tool magazine and the tool rest and silent storage of tools are achieved, and the automation level and operation reliability of the cutting machine are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of cutting and processing equipment technology, and more specifically, to a tool changing device for a cutting machine, a cutting machine including the tool changing device, and an automatic tool changing method. Background Technology

[0002] Small sheet cutting equipment is widely used in industries such as mobile phone screen protectors, advertising production, garment sampling, and printing and packaging. This type of equipment is mainly used for the precision cutting of flexible sheet materials such as films, paper, cardboard, self-adhesive labels, fabrics, and leather. Cutting machines typically employ a carriage-style blade holder structure, with magnets inside the holder to magnetically attract and fix different types of cutting blades (such as vibrating blades, drag blades, and creasing blades) to perform high-speed cutting along a preset trajectory.

[0003] With the increasing complexity of cutting processes and the improvement of production automation, multiple tool changes are often required frequently within a single machining operation. Therefore, a tool magazine system capable of automatic tool changing has become a key component for improving the automation level of cutting machines. While some automatic tool changing devices for small cutting machines exist, in practical applications, the tool magazine requires high alignment accuracy and is difficult to install and debug. Existing tool magazines are typically fixedly installed on the cutting machine's operating platform. However, after long-term reciprocating motion, the repeatability of the tool carriage's positioning to the tool-picking position may drift, and the tool magazine itself may also have positional errors. The accumulation of these errors often leads to inaccurate alignment between the tool carriage's picking component and the tool magazine's dismount position, resulting in tool picking failure or tool damage. To solve this problem, existing technologies typically rely on high-precision machining and assembly, or the addition of complex vision positioning and sensor detection systems, which significantly increases costs and limits the widespread application of automatic tool changing technology in small cutting machines.

[0004] In summary, existing technologies lack a tool changing system that can solve the problem of automatic tool magazine alignment while also achieving a compact structure and cost-effectiveness. How to provide a tool changing device and cutting machine that offers reliable alignment, simple structure, and low cost is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a tool changing device, cutting machine, and automatic tool changing method that solves the problems of difficult tool magazine alignment and high cost in the prior art.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a tool changing device applied to a cutting machine. The cutting machine includes a movable trolley tool holder, on which a magnetic suction element for adsorbing tools is provided. The tool changing device includes: a tool magazine assembly for accommodating at least one tool; a tool lifting assembly movably disposed on the tool magazine assembly for removing the tool from its storage position within the tool magazine assembly; a driving component, throttle-connected to the tool lifting assembly, for providing driving force for the movement of the tool lifting assembly; and a receiving component disposed on one side of the tool magazine assembly for retrieving the tool removed from the trolley tool holder. The tool magazine assembly includes a mounting bracket and a tool magazine body, the tool magazine body being movably disposed on the mounting bracket in a horizontal plane, and the tool magazine body being provided with an alignment structure for cooperating with the trolley tool holder to achieve automatic alignment.

[0007] Furthermore, the storage component includes: a housing having a storage cavity and an opening communicating with the storage cavity; and a magnetic element disposed on the housing for applying a magnetic force to the knife within the storage cavity. The magnetic force applied by the magnetic element to the knife within the storage cavity is configured to be switchable, allowing the storage component to switch between an adsorption state for securing the knife and a release state for releasing the knife.

[0008] Furthermore, the tool changing device also includes a clamping assembly disposed above the storage component and corresponding vertically to the opening of the storage component; the clamping assembly includes at least two relatively movable clamping members and a clamping drive device for driving the relative movement of the clamping members, and the clamping assembly is used to clamp the bottom of the tool when the tool is unloaded from the tool holder.

[0009] Furthermore, the tool magazine body is provided with at least one track for accommodating tools, and the bottom of the track is provided with a support structure for supporting the shoulder of the tool and keeping the cutting edge of the tool at a distance from the bottom surface of the track.

[0010] Furthermore, the tool magazine assembly also includes an automatic advance mechanism, which includes: a tool-shifting member slidably disposed within the track and located on the side of the tool away from the exit end of the track; and an elastic biasing member connected between the tool magazine body and the tool-shifting member, for applying a biasing force toward the exit end to the tool-shifting member.

[0011] Furthermore, the lifting assembly includes: A tool top block is vertically slidably mounted on the tool magazine body. The tool top block has a tool lifting part located below the tool exit end of the internal track of the tool magazine body. It is used to abut against the shoulder of the tool and lift the tool when it rises. An elastic reset component is connected between the tool magazine body and the tool top block, and is used to drive the tool top block to reset downward.

[0012] Furthermore, the tool changing device also includes a detection device disposed on the drive component, used to detect the movement state of the movable part of the drive component or the tool top block, and output a signal based on the movement state, the signal being used to indicate whether the tool magazine assembly carries a tool.

[0013] Furthermore, the detection device includes a sensor module, the detection end of which is located at the top of the stroke of the movable part of the driving component; When the tool top block carries the tool, the movable part can move to the top of the stroke and trigger the sensor module to output a first signal; when the tool magazine assembly is in an empty tool state, the tool release member of the tool magazine assembly is driven to the top of the tool lifting assembly, and the movable part and the tool lifting assembly are blocked at the bottom of the tool release member and cannot reach the top of the stroke, and the sensor module outputs a second signal different from the first signal.

[0014] Secondly, the present invention provides a cutting machine, comprising: an operating platform; a trolley tool holder movably disposed above the operating platform, the trolley tool holder being provided with a magnetic suction element for adsorbing cutting tools; a tool changing device as described in the first aspect, the tool magazine assembly and storage component of the tool changing device being disposed on the operating platform; and a control system electrically connected to the clamping drive device of the trolley tool holder, the driving component, and the clamping assembly, for controlling the coordinated action of the components to perform automatic tool picking and / or automatic tool unloading operations.

[0015] Thirdly, the present invention provides an automatic tool changing method based on the above-mentioned cutting machine, including an automatic tool picking process and / or an automatic tool unloading process.

[0016] The automatic tool retrieval process includes: an alignment step: controlling the carriage tool holder to move above the tool magazine assembly and descend, and guiding the tool magazine body relative to the mounting bracket through the alignment structure on the tool magazine body and the mating structure on the carriage tool holder, until the carriage tool holder and the tool magazine body are aligned at the tool retrieval station; a tool lifting step: controlling the drive component to drive the tool lifting assembly to rise, lifting the tool located in the tool magazine body to the handover position; and a tool retrieval step: using the magnetic attraction component on the carriage tool holder to attract and remove the tool located at the handover position.

[0017] The automatic tool unloading process includes: a clamping step: controlling the carriage tool holder to move the tool to be recycled to the top of the storage component, and controlling the clamping assembly to clamp the bottom of the tool; a demagnetizing step: controlling the carriage tool holder to move so that the magnetic attractor is separated from the tool by magnetic attraction; and a release and recycling step: controlling the clamping assembly to release the tool so that the tool falls into the storage cavity of the storage component under the action of gravity.

[0018] Furthermore, the automatic tool retrieval process also includes a detection step: the movement state of the movable part of the drive component or the tool lifting assembly is detected by a detection device installed on the drive component; if the movable part is detected to have moved to the top of its stroke, it is determined that the tool carried on the tool lifting assembly can be lifted to the tool carriage, and a tool retrieval success signal is output; if the movable part is detected to be blocked at the bottom position of the tool shifter and cannot reach the top of its stroke, it is determined that there is no tool in the tool magazine body, the tool shifter is pushed out of the track by the elastic bias member, blocking the upward movement of the tool shifter, and a tool magazine empty signal is output.

[0019] Furthermore, after the release and recovery step in the automatic tool unloading process, an adsorption and fixing step is also included: the magnetic element of the storage component is switched to the adsorption state, so that the magnetic element adsorbs and fixes the tool that has fallen into the storage cavity.

[0020] Beneficial effects Compared with existing technologies, the tool changing device, cutting machine, and automatic tool changing method provided by this invention have the following beneficial effects: They achieve passive adaptive alignment of the tool magazine and tool holder, reducing reliance on installation precision. This invention achieves mechanical passive adaptive alignment by configuring the tool magazine body to move horizontally on the mounting bracket and utilizing the guiding effect between the alignment structure on the tool magazine body and the mating structure on the trolley tool holder. When the trolley tool holder descends to retrieve the tool, even with certain positioning errors or installation errors in the tool magazine, the alignment structure can automatically guide the tool magazine body to move slightly, ensuring precise alignment between the tool retrieval slot and the tool exit hole. This design eliminates reliance on high-precision machining, assembly, or complex sensor systems, significantly reducing costs while improving the reliability of the tool retrieval action. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the cutting machine in a preferred embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram showing the structure of the cutting machine in a preferred embodiment of the present invention.

[0024] Figure 3 This is another schematic diagram showing the structure of the cutting machine in a preferred embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram showing the unfolded structure of a tool changing device according to another embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the carriage tool holder and the tool in one embodiment of the present invention.

[0027] Figure 6 This is a half-sectional schematic diagram of the carriage tool holder in one embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram showing the unfolded structure of the tool magazine assembly and the tool lifting assembly in one embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram showing the unfolded structure of the tool magazine assembly, the tool lifting assembly, and the drive component in one embodiment of the present invention.

[0030] Figure 9 This is a schematic diagram of a half-section three-dimensional structure of the tool magazine assembly in one embodiment of the present invention.

[0031] Figure 10 This is a schematic diagram showing the structure of the driving component and the detection device in one embodiment of the present invention.

[0032] Figure 11 This is a schematic diagram showing the unfolded structure of the clamping component and the storage component in one embodiment of the present invention.

[0033] Figure 12 This is a half-sectional structural diagram of the clamping component and the storage component in one embodiment of the present invention.

[0034] Figure 13 This is a schematic diagram of the structure of the cutting machine assembly clamping component and the storage component in one embodiment of the present invention.

[0035] Figure label: 100 - Cutting machine; 200 - Tool changer; 1-Operating platform; 11-Connection slot; 12-Frame body; 121-Installation window; 2-Carriage tool holder; 21-Tool take-up slot; 211-Limit ring; 22-Magnetic suction component; 221-Snap-fit ​​slot; 23-Drive element; 24-Conical guide; 3-Tool; 31-Conical head; 32-Shoulder; 33-Cutting edge; 4-Tool magazine assembly; 41-Mounting bracket; 411-Mounting hole; 412-Moving slot; 413-Slot; 414-Snap-in slot; 42-Tool magazine body; 421-Outer edge of the slot; 422-Alignment structure; 423-Tool exit hole; 424-Railway; 4241-Tool exit end; 4242-Initial end; 425-Stepped structure; 426-Guide groove; 427-Mounting slot; 428-First connecting part; 429-Second connecting part; 420-Limiting part; 43-Tool magazine cover; 431-Second movable slot; 432-Insertion part; 433-Snap-fit ​​part; 4331-Barb protrusion; 4332-Operating part; 4333-Cover cap; 44-Tool release component; 441-Connecting body; 45-First elastic element; 5- Lifting assembly; 51- Tool top block; 511- Lifting part; 512- Abutment groove; 513- Slider part; 514- Receiving part; 52- Second elastic element; 53- Optical axis; 6-Drive component; 61-Frame; 611-Through opening; 62-Slide table; 621-Clearing opening; 63-Lead screw; 64-Screw nut; 65-Sliding component; 66-Drive motor; 67-Connecting rod; 7-Detection device; 71-Sensor module; 711-Detection end; 8-Clamping assembly; 81-Clamping element; 82-Drive device; 821-Rotary drive motor; 83-Fixed clamping arm; 831-First elastic buffer; 84-Modible clamping arm; 841-Second elastic buffer; 85-Bracket; 86-Limiting component; 9-Storage component; 91-Box body; 911-Storage cavity; 912-Opening; 913-Slide rail; 914-Limiting part; 915-Guide structure; 916-Clip bar; 92-Magnetic element; 93-Moving bracket; 931-Snap-fit ​​part; 94-Deformation piece; 941-Starting end; 942-Snap-on end; 9421-Barb part; 943-Unhooking end. Detailed Implementation

[0036] Example The purpose of this invention is to provide an integrated automatic tool changing solution for cutting machines. This solution achieves mechanical, passive, adaptive alignment of the trolley tool holder and the tool magazine's tool release position through a combination of a "translatable tool magazine body" and an "alignment guide structure." A detection device on the drive component enables intelligent identification of the tool retrieval status. A storage component with a switchable magnetic element balances quiet tool storage and convenient tool removal. Furthermore, this invention integrates tool protection and storage, automatic advancement, and smooth lifting modules to form a complete automatic tool changing system.

[0037] Those skilled in the art should understand that the core concept of this invention can be applied to various types of cutting equipment, including but not limited to vibrating knife cutting machines, laser cutting machines (only the blade removal part), inkjet cutting machines, etc.; it can be applied to various scenarios that require automatic tool changing, and is not limited to cutting tools, but can also be other types of execution ends.

[0038] like Figures 1 to 3 As shown, the present invention provides a cutting machine 100, which includes an operating platform 1, a carriage tool holder 2, a tool changing device 200, and a control system (not shown in the figure).

[0039] like Figures 1 to 3 As shown, the operating platform 1 is a flat worktable used to support the sheet material to be cut. The operating platform 1 is provided with a connection slot 11 for installing components of the tool changing device 200. The bottom of the operating platform 1 has a frame body 12, which is hollow inside to accommodate components such as the clamping assembly 8, which will be described later.

[0040] like Figures 3 to 6 As shown, the carriage tool holder 2 is movably mounted above the operating platform 1 along three axes, enabling precise positioning along the X, Y, and Z directions, such as by moving the carriage tool holder 2 via a three-axis motion slide. A tool-retrieving slot 21 is provided at the bottom of the carriage tool holder 2, and a magnetic suction element 22 is provided within the slot 21. The magnetic suction element 22 is used to attract and fix the top of the tool 3. In a preferred embodiment, the magnetic suction element 22 has a locking groove 221 adapted to the shape of the tool top, such as a concave circular groove, to accommodate the conical head 31 of the tool 3, improving the stability and positioning accuracy of the attraction.

[0041] like Figure 6 As shown, in one optional implementation, the magnetic chuck 22 is movably disposed within the tool-taking slot 21 and connected to a driving element 23. The driving element 23 can be a linear drive element such as a miniature electric push rod, a miniature cylinder, or an electromagnet, fixedly disposed inside the carriage tool holder 2. Its output end is connected to the magnetic chuck 22, enabling it to drive the magnetic chuck 22 to move vertically within the tool-taking slot 21. A limiting ring 211 is provided at its bottom port of the tool-taking slot 21. This limiting ring 211 is used to limit the magnetic chuck 22 from excessively sliding out of the bottom of the tool-taking slot 21. Simultaneously, the inner circle of the limiting ring 211 is slightly larger than the outer diameter of the tool 3. In some embodiments, a spring is provided between the magnetic chuck 22 and the limiting ring 211. This spring is used to drive the magnetic chuck 22 to reset, i.e., to reset towards the top of the carriage tool holder.

[0042] During the tool retrieval process, after the trolley tool holder 2 and the tool magazine assembly are aligned, the tool top block lifts the tool 3 into the tool retrieval slot 21. The drive element 23 pushes the magnetic suction component 22 downward, causing it to contact and attract the tool 3 (when the drive element 23 pushes the magnetic suction component 22 downward to contact the top of the tool 3, its load increases, and the drive stops). The control system controls the drive element 23 to retract, or controls the trolley tool holder 2 to move upward as a whole. At this time, since the tool has been firmly attracted by the magnetic suction component 22, the tool will rise together with the magnetic suction component 22 or the trolley tool holder 2 to complete the tool retrieval action. The drive element 23 or the three-axis motion slide carrying the trolley tool holder 2 can be monitored by the control system in real time. If the tool is carried upward, its load is greater than that of the unloaded state, and the control system can further determine whether the tool retrieval was successful.

[0043] like Figure 4 As shown, the tool changing device includes a tool magazine assembly 4, a tool lifting assembly 5, a drive component 6, a detection device 7, a clamping assembly 8, and a storage component 9.

[0044] like Figures 7 to 9 As shown, the tool magazine assembly 4 includes a mounting bracket 41, a tool magazine body 42, an automatic advance mechanism, and a tool magazine cover 43.

[0045] The mounting bracket is slidably connected to the tool magazine body. For example... Figures 7 to 9 As shown, the mounting bracket 41 is a plate-shaped structure, which is fixed to the operating platform 1 of the cutting machine through multiple mounting holes 411 and fasteners (such as screws). The mounting bracket 41 is embedded in the connecting slot 11 on the operating platform 1, and after installation, its top surface is basically flush with the surface of the operating platform 1 to avoid interfering with the cutting operation.

[0046] like Figure 7 As shown, the mounting bracket 41 is provided with a movable slot 412 that extends through its thickness. The size of the movable slot 412 is slightly larger than the cross-sectional profile of the tool magazine body 42.

[0047] like Figure 3 , Figure 7 and Figure 8 As shown, the tool magazine body 42 is a shell structure, with an internal space for accommodating multiple tools 3. A circumferentially extending locking edge 421 is provided on the top of the tool magazine body 42. The tool magazine body 42 is suspended from the edge of the movable slot 412 of the mounting bracket 41 via this locking edge 421. Because the locking edge 421 and the edge of the movable slot 412 are in slidable contact, and the size of the movable slot 412 is larger than the main body of the tool magazine body 42, the tool magazine body 42 is allowed to freely translate within a limited range relative to the mounting bracket 41 in a plane parallel to the surface of the operating platform 1 (i.e., the XY plane).

[0048] As shown in Figure 7, a convex frustum is formed in the top central region of the tool magazine body 42. This frustum has a concave conical structure, forming a matching structure 422. This matching structure 422 is used to mate with the bottom of the carriage tool holder 2. The bottom of the carriage tool holder 2 has a conical guide portion 24 that is adapted to the concave conical structure.

[0049] As an alternative, the alignment structure 422 can also be a conical protrusion on the top of the tool magazine body 42, and correspondingly, a conical inner groove is provided at the bottom of the carriage tool holder to cooperate with it; or, the alignment structure can also be a trumpet-shaped opening with a conical guide surface on its inner wall, which can also achieve the function of guiding alignment.

[0050] like Figure 9 As shown, the top of the tool magazine body 42 is also provided with a tool outlet hole 423 that extends into its interior. The tool outlet hole 423 is located in the central area of ​​the alignment structure 422 and corresponds vertically to the tool outlet end of the track, which will be described below. After the carriage tool holder 2 and the tool magazine body 42 complete automatic alignment, the tool retrieval slot 21 of the carriage tool holder 2 is aligned vertically with the tool outlet hole 423.

[0051] like Figures 7 to 9 As shown, a straight track 424 is provided inside the tool magazine body 42. In this embodiment, the track 424 is a straight groove. The track 424 is defined with a first end (i.e., the tool outlet end 4241, near the tool outlet hole 423) and a second end (i.e., the initial end 4242) opposite to the first end.

[0052] like Figure 9 As shown, stepped structures 425 extending along the length of the track are symmetrically arranged on both sides of the bottom of the track 424, forming a support structure. These stepped structures 425 support the shoulder 32 of the cylindrical cutter 3. The top of the cutter 3 is a tapered head 31 made of a magnetically attractive material such as iron, and the bottom is a small-diameter cutting edge 33. When the shoulder 32 of the cutter 3 rests on the stepped structure 425, the cutting edge 33 at its bottom is suspended above the bottom surface of the track 424, maintaining a certain gap with the bottom of the track, thereby preventing the cutting edge 33 from contacting and wearing with the track 424.

[0053] like Figure 7 As shown, the tool magazine assembly 4 also includes an automatic advance mechanism, which consists of a tool shifter 44 and a first elastic member 45. The tool shifter 44 is a slider structure, slidably disposed within the track 424, and located on the side of the multiple tools 3 away from the tool exit end 4241 (i.e., close to the last tool). A guide groove 426 is formed in the side wall of the tool magazine body 42, and at least a portion of one side of the tool shifter 44 extends out of the guide groove 426 to form a connector 441, which is used to adapt and connect the first elastic member 45.

[0054] The first elastic element 45 is disposed on the side wall of the tool magazine body 42. In this embodiment, the first elastic element 45 is preferably a torsion spring. The side wall of the tool magazine body 42 is provided with a mounting groove 427 for accommodating the torsion spring. One torsion arm of the torsion spring is connected to the tool-picking member 44, and the other torsion arm abuts against the tool magazine body 42. The torsion spring always applies an elastic biasing force toward the tool-dispensing end 4241 to the tool-dispensing member 44, thereby pushing the entire tool rack toward the tool-dispensing end 4241, ensuring that the foremost tool is always located in the tool-picking position at the tool-dispensing end 4241.

[0055] Furthermore, the bottom of the tool-shifting component 44 is provided with a locking step structure, which is adapted to the abutment groove 512 opened on the tool-lifting part 511. When the tool magazine assembly 4 is in an empty tool state, that is, when there is no tool in the track 424, the outer part of the tool-shifting component 44 can slide out of the track 424 under the action of the first elastic member 45. That is, the locking step structure of the part that slides out of the track 424 is engaged in the abutment groove 512. The connecting body 441 of the tool-shifting component 44 is located in the guide groove 426. Therefore, the tool-shifting component 44 is in a limited state in the vertical direction. When the locking step structure is engaged in the abutment groove 512, the tool top block 51 cannot be lifted by the movable part.

[0056] As an alternative implementation, the first elastic element 45 may also be other elastic elements such as tension springs, compression springs or sheet springs, as long as they can apply a continuous biasing force to the pawl element 44.

[0057] like Figure 7 As shown, the tool magazine assembly 4 also includes a tool magazine cover 43. The tool magazine cover 43 is detachably connected to the mounting bracket 41 and covers the top of the tool magazine body 42 to limit the vertical displacement of the tool magazine body 42 and prevent it from being accidentally lifted during tool retrieval.

[0058] The tool magazine cover plate 43 is provided with a second movable slot 431, through which the alignment structure 422 on the top of the tool magazine body 42 protrudes upward. The size of the second movable slot 431 is slightly larger than the protruding frustum of the alignment structure 422, allowing the alignment structure 422 to move horizontally within the second movable slot 431 without interfering with the adaptive alignment function of the tool magazine body 42.

[0059] like Figure 7 As shown, the tool magazine cover 43 and the mounting bracket 41 are connected by a quick-release snap-fit ​​structure. Specifically, one end of the tool magazine cover 43 has at least one insertion part 432 protruding downwards, and the opposite end has a snap-fit ​​part 433. The mounting bracket 41 is provided with a slot 413 that matches the insertion part 432 and a snap-fit ​​groove 414 that matches the snap-fit ​​part 433.

[0060] During installation, the insertion part 432 is first inserted at an angle into the slot 413, and then the tool magazine cover 43 is pressed downwards. After elastic deformation, the latching part 433 snaps into the latching groove 414. The latching part 433 is provided with a barbed protrusion 4331, which hooks the lower surface of the latching groove 414 in the engaged state to achieve reliable locking. The top of the latching part 433 is also provided with an operating part 4332. In this embodiment, the operating part 4332 is detachably connected to a cover cap 4333. When disassembly is required, the operator pushes the operating part 4332 forward (e.g., in the direction of tool advance), causing the latching part 433 to elastically deform. The barbed protrusion 4331 disengages from the latching groove 414, allowing one end of the tool magazine cover 43 to be lifted and pulled out in the opposite direction of the insertion part 432, thereby removing the tool magazine body 42 for replacement. This snap-fit ​​connection method is convenient to operate and allows for quick installation and removal of the tool magazine body 42 without the need for additional tools.

[0061] like Figures 7 to 9 As shown, the tool lifting assembly 5 is disposed on the tool magazine body 42 of the tool magazine assembly 4, and is used to lift the tool 3 contained in the tool magazine body 42 from there so that the tool carriage 2 can take it out.

[0062] like Figure 7 As shown, the tool lifting assembly 5 includes a tool top block 51, a second elastic element 52, and a guide mechanism.

[0063] like Figures 7 to 9 As shown, the tool top block 51 preferably adopts a U-shaped structure in this embodiment, with its U-shaped opening facing the tool magazine body 42, and is slidably fitted onto at least a portion of the exterior of the tool magazine body 42. This compact design allows the tool top block 51 to make full use of the space around the tool magazine body 42.

[0064] like Figures 7 to 9 As shown, the tool top block 51 extends from the end of the tool exit end near the track 424 to form a tool lifting section 511. This lifting section 511 is located directly below the tool exit end 4241 of the track 424, and initially aligned vertically with the tool at the tool exit end 4241. The lifting section 511 has an abutment groove 512, the width and depth of which are designed to precisely accommodate the cutting edge 33 of the tool. When the tool top block 51 rises, the cutting edge 33 of the tool enters the abutment groove 512, and simultaneously, the top end face of the lifting section 511 abuts against the shoulder 32 of the tool, thereby vertically lifting the tool from the track 424.

[0065] like Figure 7As shown, a slider portion 513 is formed at the end of the side wall of the tool top block 51 away from the tool exit end of the track 424. The bottom of the tool magazine body 42 is provided with a first connecting portion 428 and a second connecting portion 429 protruding outwards. The first connecting portion 428 is used to install a guide mechanism. In this embodiment, the guide mechanism is a vertically arranged optical shaft 53. The top of the optical shaft 53 is fixed to the outer edge of the top locking portion 421 of the tool magazine body 42, and the bottom is fixed to the first connecting portion 428. The tool top block 51 is slidably sleeved on the optical shaft 53, thereby guiding the tool top block 51 to slide smoothly in the vertical direction.

[0066] like Figures 7 to 9 As shown, the second elastic element 52 is connected between the tool magazine body 42 and the tool top block 51, and is used to drive the tool top block 51 to return downward to its initial position. In this embodiment, the second elastic element 52 is preferably a tension spring. One end of the tension spring is connected to the second connecting part 429 at the bottom of the tool magazine body 42, and the other end is connected to the corresponding connecting part of the tool top block 51. Under no external force, the second elastic element 52 keeps the tool top block 51 in its initial position. At this time, the top end face of the lifting part 511 is flush with or slightly lower than the top surface of the stepped structure 425 of the track 424 to avoid hindering the normal advancement of the tool.

[0067] As an alternative implementation, the second elastic element 52 can also be a compression spring, simply by adjusting its installation position so that it can apply a downward restoring force to the tool top block 51.

[0068] like Figure 7 As shown, a receiving portion 514 is provided on the outer side of the cutter top block 51 (i.e., the bottom of the U-shaped structure), which is used for transmission connection with the drive component 6 on the cutting machine. The receiving portion 514 may be a protrusion or platform extending outward from the cutter top block 51, and its lower surface is used to abut against the connecting rod of the drive component 6.

[0069] like Figure 8 As shown, a limiting part 420 is also provided on the tool magazine body 42. This limiting part 420 is located above the tool exit end 4241 of the track 424, for example, it can be located at the top of the tool magazine body 42 near the tool exit hole 423. The limiting part 420 is strictly aligned with the tool lifting part 511 in the vertical direction. When the tool top block 51 lifts the tool upward, the top of the tool (the position below the conical head 31) is supported by the limiting part 420. The limiting part 420 plays a role in straightening and limiting, preventing the tool from tilting or falling off the track during the upward process, and ensuring that the tool can enter the tool retrieval slot vertically and accurately.

[0070] like Figure 2 and Figure 3As shown, the drive component 6 is mounted on the frame 61 of the cutting machine, located on one side of the blade lifting device, and is connected to the blade top block 51 for driving the blade top block 51 to move in the vertical direction.

[0071] In a preferred embodiment, the drive component 6 includes a lead screw transmission mechanism. For example... Figure 8 and Figure 10 As shown, the lead screw transmission mechanism includes a slide table 62, a lead screw 63, a lead screw nut 64, a sliding member 65, a drive motor 66, and a connecting rod 67.

[0072] like Figure 8 and Figure 10 As shown, the slide 62 is a long strip-shaped base, which is fixedly installed on the side wall of the frame 61 by screws and other fasteners, and its length extends in the vertical direction.

[0073] like Figure 8 and Figure 10 As shown, the lead screw 63 is rotatably supported on the slide table 62, and its axis is parallel to the vertical direction. The top or bottom end of the lead screw 63 is connected to the output shaft of the drive motor 66 via a coupling, and is driven to rotate by the drive motor 66.

[0074] like Figure 8 and Figure 10 As shown, the lead screw nut 64 is threadedly engaged with the lead screw 63. When the lead screw 63 rotates, the lead screw nut 64 moves along the axial direction of the lead screw 63.

[0075] like Figure 8 and Figure 10 As shown, the sliding member 65 is fixedly connected to the lead screw nut 64 and slidably engages with the slide table 62. The slide table 62 is provided with a guide rail or slide groove structure, along which the sliding member 65 can slide smoothly. The sliding member 65 constitutes a "movable part" of the drive component 6.

[0076] like Figure 10 As shown, the connecting rod 67 is a rod-shaped element, one end of which is fixedly connected to the sliding member 65, and the other end extends towards the tool top block 51 for abutting or connecting with the receiving part 514 of the tool top block 51. The up-and-down movement of the sliding member 65 is transmitted to the tool top block 51 through the connecting rod 67, driving the tool top block 51 to move synchronously.

[0077] like Figure 2 and Figure 3As shown, to avoid the movement path of the connecting rod 67, a clearance opening 621 is provided on the slide 62 directly opposite the connecting rod 67. The connecting rod 67 extends through the clearance opening 621 to the outside of the slide 62. At the same time, a through opening 611 is provided on the frame 61, which corresponds to the clearance opening 621 of the slide 62. After the connecting rod 67 passes through the clearance opening 621 and the through opening 611 in sequence, it connects with the receiving part 514 of the tool top block 51. This multi-layered through-hole structure design allows the drive component 6 to be compactly installed on the side wall of the frame 61, while ensuring the linearity and smoothness of the drive force transmission.

[0078] As an alternative implementation, the drive component 6 may also be any one of a cylinder drive mechanism, a linear motor drive mechanism, or a cam drive mechanism, as long as it can drive the tool top block 51 to move in the vertical direction.

[0079] like Figure 8 and Figure 10 As shown, the detection device 7 is disposed on the drive component 6 and is used to detect the movement state of the movable part (slider 65 in this embodiment) or the tool top block 51 of the drive component 6, and output a signal based on the movement state. The signal is used to indicate whether the tool magazine assembly 4 carries a tool, that is, whether it is in an empty tool state.

[0080] like Figure 10 As shown, in this embodiment, the detection device 7 includes a sensor module 71. The sensor module 71 is mounted on the slide table 62 via a bracket, and its detection end 711 is located at the top of the stroke of the slider 65 (i.e., the highest position that the slider 65 can move to). The sensor module 71 can be one of a proximity switch, a photoelectric switch, or a micro switch.

[0081] The working logic of the detection device 7 is as follows: Scenario 1: Tool top block 51 is not carrying a tool (i.e., tool magazine assembly 4 is in an empty tool state). When the tool magazine assembly 4 is in an empty state, i.e., when there are no tools in the track 424, the tool-shifting member 44, under the action of the first elastic member 45, can slide a portion of its outer side out of the track 424. That is, the portion sliding out of the track 424 engages with the stepped engagement structure into the abutment groove 512. The connecting body 441 of the tool-shifting member 44 is located in the guide groove 426, thus the tool-shifting member 44 is in a vertically limited state. When the stepped engagement structure engages with the abutment groove 512, the tool top block 51 cannot be lifted by the movable part. When the drive motor 66 drives the lead screw 63 to rotate, causing the sliding member 65 to move upwards, it cannot move to the top of its stroke due to obstruction. At this time, the sliding member 65 cannot trigger the sensor module 71, and the sensor module 71 outputs a first signal (e.g., a low-level signal). After receiving this first signal, the control system can determine that the tool magazine assembly 4 is in an empty state and issue an alarm or stop command to the control system.

[0082] Scenario 2: The tool top block 51 carries the tool and the tool is normally transferred. When the tool top block 51 carries the tool upwards, its upward movement is unrestrained and continues to move upwards. When the slider 65 slides to the top of its stroke and is blocked at the top, the sensor module 71 is triggered, outputting a second signal (e.g., a high-level signal) different from the first signal. The top of the tool 3 enters the tool-retrieving slot 21 of the carriage tool holder 2 and is attracted by the movable downward magnetic suction member 22 or a magnetic suction member 22 fixed in a suitable position. The control system receives this second signal and, in conjunction with the load change of the three-axis motion slide carrying the carriage tool holder 2, determines that the tool retrieval is successful.

[0083] Through the above detection logic, the present invention uses a sensor module 71 set at the top of the stroke, combined with the load change of the drive motor 66, to detect whether the tool magazine assembly 4 is in an empty tool state.

[0084] like Figure 2 and Figure 3 As shown, the clamping component 8 is set on the cutting machine operating platform 1, and its clamping position corresponds to the opening of the storage component 9 in the vertical direction, ensuring that the tool 3 can accurately fall into the opening after being released.

[0085] like Figure 11 and Figure 12 As shown, the clamping assembly 8 includes at least two clamping members 81 that can move relative to each other, and a drive device 82 for driving the clamping members 81 to move relative to each other.

[0086] The number of clamping elements 81 can be varied. As a preferred embodiment, a two-jaw structure is used, where two clamping elements 81 move relative to each other to achieve the clamping function. As an alternative, a three-jaw structure can also be used, where three clamping elements 81 move synchronously towards the center, suitable for circular tools or applications requiring centering.

[0087] As a preferred implementation method, such as Figure 11 and Figure 12 As shown, the clamping assembly 8 includes a fixed clamping arm 83 and a movable clamping arm 84. The fixed clamping arm 83 extends from the bracket 85 to above the opening of the receiving component 9, and the movable clamping arm 84 is movably mounted on the bracket 85. The drive unit 82 is drivenly connected to the movable clamping arm 84, driving the movable clamping arm 84 to move relative to the fixed clamping arm 83, thereby clamping or releasing the tool 3. This fixed-moving structure has the advantages of simple control and low cost, and is suitable for clamping most conventional tools.

[0088] The drive unit 82 can be implemented in various ways to adapt to different application scenarios and performance requirements: In a preferred embodiment, the drive device 82 employs a rotary drive motor 821. For example... Figure 3 and Figure 4 As shown, one end of the movable clamping arm 84 is fixedly connected to the output shaft of the rotary drive motor 821. When the rotary drive motor 821 rotates, it directly drives the movable clamping arm 84 to swing. This method has a simple structure, fast response speed, and is suitable for occasions with frequent movements.

[0089] As an alternative implementation, the drive unit 82 employs a linear drive element. The movable clamping arm 84 is driven by the linear drive element. The linear drive element can be: a pneumatic element (such as a single-acting cylinder, double-acting cylinder, pneumatic finger, etc.), suitable for applications requiring rapid response and sufficient air supply; a hydraulic element (such as a hydraulic cylinder), suitable for applications requiring large clamping forces; or an electric actuator (such as a lead screw motor, linear motor), suitable for applications requiring precise control of position and force.

[0090] like Figure 11 and Figure 12 As shown, to protect the surface and cutting edge of the tool 3 from damage, the clamping end of the fixed clamping arm 83 is provided with a first elastic buffer 831, and the clamping end of the movable clamping arm 84 is provided with a second elastic buffer 841. The elastic buffer can be made of rubber or silicone, and is fitted onto the end of the clamping arm, being soft and elastic. The elastic buffer not only protects the tool 3, but also increases the clamping friction and improves the clamping reliability.

[0091] like Figure 11 and Figure 12As shown, the clamping assembly 8 also includes a limiting member 86 disposed next to the drive device 82. The limiting member 86 is used to limit the movement angle or stroke of the movable clamping arm 84 to prevent excessive movement from damaging the mechanism or pinching the tool 3. The limiting member 86 may be a mechanical stop (fixed on the bracket 85 and abutting against a specific part of the movable clamping arm 84) or a limit switch (triggered when the movable clamping arm 84 moves to its limit position, cutting off the drive power).

[0092] like Figure 13 As shown, the storage component 9 is located on one side of the tool magazine assembly 4 and is used to retrieve the tools 3 unloaded from the carriage tool holder 2.

[0093] like Figure 11 and Figure 12 As shown, the storage component 9 includes a housing 91 and a magnetic element 92. The housing 91 can be made of non-magnetic materials such as plastic, nylon, or aluminum alloy to avoid interfering with magnetic lines of force. The housing 91 defines a storage cavity 911 for accommodating the tool 3, and its top has an opening 912 communicating with the storage cavity 911. The shape of the opening 912 can be rectangular, circular, or elliptical, and its size should be larger than the maximum cross-sectional size of the tool 3 to ensure that the tool 3 can fall in smoothly.

[0094] like Figure 11 and Figure 12 As shown, a magnetic element 92 is disposed on the housing 91 and is used to apply a magnetic force to the tool 3 inside the storage cavity 911. The magnetic force of the magnetic element 92 on the tool 3 inside the storage cavity 911 is switchable. The storage component 9 is configured to switch between an adsorption state and a release state. In the adsorption state, the magnetic lines of force generated by the magnetic element 92 act on the storage cavity 911, adsorbing and fixing the tool 3; in the release state, the magnetic lines of force generated by the magnetic element 92 do not act on the storage cavity 911, and the tool 3 is in a freely movable state.

[0095] There are multiple ways to achieve switchable magnetic force; this embodiment provides a preferred implementation method: Mechanically mobile. For example... Figure 12 As shown, the magnetic element 92 is mounted on a movable support 93. The relative position of the magnetic element 92 and the storage cavity 911 is changed by moving the support 93, thereby changing the area of ​​action of the magnetic lines of force.

[0096] The movable connection between the movable bracket 93 and the housing 91 is achieved through a sliding fit. For example... Figure 11As shown, the bottom sides of the housing 91 are provided with slide rails 913 extending along the first direction F (i.e., the sliding direction). The cross-section of the slide rails 913 can be T-shaped, L-shaped, dovetail-shaped, or cylindrical. The movable support 93 adopts a U-shaped structure, with its two side arms forming a fastening part 931 that slides and engages with the slide rails 913. The shape of the fastening part 931 matches that of the slide rails 913. A magnetic element 92 is embedded in the bottom of the U-shaped structure. This U-shaped fastening structure is simple to assemble, slides smoothly, and provides good guidance and support.

[0097] To ensure that the movable support 93 will not accidentally shift under the vibration generated by the cutting machine operation, a damped sliding fit is preferably used between the movable support 93 and the housing 91. Damping can be achieved through an interference fit: a small interference is set between the fastening part 931 and the slide rail 913, and frictional damping is generated by the elasticity of the material.

[0098] like Figure 11 As shown, to prevent the movable support 93 from sliding off the slide rail 913, limiting parts 914 are provided at both ends of the slide rail 913. The limiting part 914 can be an integral stop: a protruding stop is provided at the end of the slide rail 913, which abuts against the end face of the fastening part 931 of the movable support 93.

[0099] As an alternative implementation, the magnetic element 92 can be an electromagnet, and the magnetic force can be adjusted by controlling the on / off state and magnitude of the current to achieve remote control of the adsorption and release states.

[0100] like Figure 12 As shown, the bottom of the box 91 is provided with a guide structure 915. The guide structure 915 is located directly below the opening 912 and extends obliquely toward the storage cavity 911. The guide structure 915 can be of the ramp type: using a smooth inclined plane, the cutter 3 slides into the storage cavity 911 along the ramp after falling; or it can be of the guide groove type: a guide groove is provided to limit the sliding direction of the cutter 3 and prevent lateral deviation.

[0101] like Figure 13 As shown, the storage component 9 is detachably mounted to the bottom of the cutting machine operating platform 1. For example, the bottom of the frame body 12 is provided with an installation window 121 for the storage component 9, the size of which is similar to the size of the storage component 9.

[0102] like Figure 11As shown, deformable tabs 94 are provided on both sides of the storage component 9. Each deformable tab 94 includes a starting end 941, a snap-fit ​​end 942, and a release end 943. The snap-fit ​​end 942 is located between the starting end 941 and the release end 943, and the starting end 941 is flush with the surface of the storage component 9, allowing the top of the storage component 9 to be smoothly inserted upwards into the mounting window 121. The snap-fit ​​end 942 protrudes from both sides of the box body 91, and its outer surface is provided with barbs 9421.

[0103] As the storage component 9 is inserted upwards, the deformation piece 94 continuously deforms and narrows towards the storage component 9 until the barb 9421 is engaged with the bottom inner wall of the frame body 12, forming a complete latch. The storage component 9 is then stably fixed to the mounting window 121. At this point, the release end 943 remains exposed on the bottom surface of the frame body 12. When it is necessary to remove the storage component 9, the user can press the release ends 943 on both sides to further deform the deformation piece 94 towards the inside of the storage component 9, causing the barb 9421 of the latch end 942 to disengage from the bottom inner wall of the frame body 12. The storage component 9 can then be pulled downwards from the mounting window 121. This latching connection method is convenient to operate, requiring no additional tools for quick installation and removal of the storage component 9, facilitating regular centralized processing or maintenance of stored knives.

[0104] The automatic tool changing method of the cutting machine according to the present invention will be described in detail below with reference to the above structure. The method includes an automatic tool picking process and an automatic tool unloading process. The automatic tool changing method is uniformly coordinated and controlled by a control system, which is electrically connected to the drive device 82 and drive element 23 of the carriage tool holder 2, the drive component 6, the clamping assembly 8.

[0105] Automatic tool retrieval process, step S101: Initial state. The tool magazine assembly 4 is fully loaded, with multiple tools 3 arranged side-by-side within the track 424, their shoulders 32 supported by the stepped structure 425, and the cutting edges 33 suspended in the air. The first elastic element 45 applies a preload force towards the tool outlet end 4241 to the tool pack via the tool-pulling element 44, positioning the foremost tool at the tool retrieval position at the tool outlet end 4241. The tool top block 51 of the tool lifting assembly 5 is in the initial downward position under the action of the second elastic element 52. The sliding element 65 of the drive component 6 is also in the initial downward position.

[0106] Step S102: Movement and Alignment. The cutting machine control system controls the carriage tool holder 2 to move above the tool magazine assembly 4 and begin to descend.

[0107] Step S103: Adaptive Calibration. The tapered guide 24 at the bottom of the carriage tool holder 2 first enters the tapered alignment structure 422 at the top of the tool magazine body 42. Due to the guiding effect of the tapered surface, if there is a horizontal positional deviation between the carriage tool holder 2 and the alignment structure 422, the descending tool holder will apply a horizontal component force to the tool magazine body 42, pushing the tool magazine body 42 to make a slight translation within the movable slot 412 of the mounting bracket 41 until the tapered guide 24 and the alignment structure 422 are completely aligned. At this time, the tool retrieval slot 21 at the bottom of the carriage tool holder 2 and the tool outlet hole 423 at the top of the tool magazine body 42 are precisely aligned in the vertical direction. Throughout the process, the second movable slot 431 on the tool magazine cover plate 43 provides sufficient space for the movement of the tool magazine body 42.

[0108] Step S104: Lift the tool. After alignment, the control system triggers the start of the drive component 6. The output end of the drive component 6 extends upward, pushing the receiving part 514 of the tool top block 51, so that the entire tool top block 51 rises along the optical axis 53 against the pulling force of the second elastic member 52.

[0109] During the upward movement, the lifting section 511 first approaches the tool located at the exit end 4241. The cutting edge 33 of the tool enters the abutment groove 512 of the lifting section 511, and the top end face of the lifting section 511 contacts the shoulder 32 of the tool, thus beginning to lift the tool.

[0110] As the tool top block 51 continues to rise, the tool is vertically lifted from the track 424. At the same time, the top of the tool passes through the limiting part 420, which supports the tapered head 31 of the tool, ensuring that the tool always remains in a vertical position.

[0111] When the tool is raised to its highest point (transfer position), its conical head 31 passes through the tool exit hole 423 and enters the tool take-up slot 21 of the carriage tool holder 2.

[0112] Step S105: Tool Retrieval and Inspection. The top of the tool entering the tool retrieval slot 21 is attracted by the magnetic chuck 22 and falls into the locking slot 221 for positioning. If a movable magnetic chuck is used (i.e., an embodiment with a driving element 23), the control system controls the driving element 23 to push the magnetic chuck 22 downward. After the tool has risen, it contacts the magnetic chuck 22 and is attracted. After attraction, the control system controls the driving element 23 to retract, and the load change of the three-axis motion slide carrying the trolley tool holder 2 confirms that the tool has been firmly attracted.

[0113] During the tool lifting process, the detection device 7 works synchronously to detect whether the tool magazine assembly 4 is empty.

[0114] Step S106: Reset and Progression. After successful tool retrieval, the control system issues a command, and the carriage tool holder 2, carrying the tool, rises and leaves. Simultaneously, the drive component 6 retracts. Under the pulling force of the second elastic element 52, the tool top block 51 automatically descends and resets to its initial position.

[0115] As the foremost cutting tool is removed, the preload of the first elastic element 45 is released, pushing the cutting tool 44 forward, thereby pushing the second cutting tool in the track 424 to the cutting tool removal station at the cutting end 4241, waiting for the next cutting tool removal command.

[0116] Step S107: Tool retrieval complete. The tool holder 2 moves the newly retrieved tool to the machining area to begin the cutting operation.

[0117] Step S201: Movement and Clamping. When it is necessary to change the tool, the control system controls the carriage tool holder 2 to move the tool to be recycled to above the storage component 9, so that the bottom of the tool is aligned with the clamping position of the clamping assembly 8.

[0118] The control system activates the drive unit 82, driving the movable clamping arm 84 to move towards the fixed clamping arm 83, so that the two clamping members together hold the bottom of the tool. The first elastic buffer 831 and the second elastic buffer 841 contact the tool, providing cushioning and protection.

[0119] Step S202: Demagnetization. The control system controls the movement of the carriage tool holder 2 (e.g., lifting it upwards), so that the magnetic attractor 22 inside the carriage tool holder 2 gradually moves away from the top of the tool until the tool and the magnetic attractor 22 are completely separated from the magnetic attraction.

[0120] Step S203: Release and Drop. The control system controls the clamping assembly 8 to release the tool, and the movable clamping arm 84 moves away from the fixed clamping arm 83. The tool falls freely under its own weight and, guided by the guide structure 915, falls from the opening 912 into the receiving cavity 911.

[0121] Step S204: Adsorption and Fixing. Before step S203, the operator manually drives the movable bracket 93 to slide along the slide rail 913, moving it from the release position to the adsorption position. At this time, the magnetic element 92 embedded in the movable bracket 93 faces the receiving cavity 911, and the magnetic lines of force generated by it act on the receiving cavity 911, adsorbing and fixing the tool that has fallen into the receiving cavity 911, preventing it from causing collision noise due to platform vibration during subsequent cutting operations.

[0122] In some embodiments, the bottom surface of the box 91 is provided with a semi-circular protruding locking strip 916, corresponding to the adsorption state and the release state. The movable bracket 93 is provided with a matching locking slot, so that there will be position feedback when the corresponding state is locked, which makes it easier for the operator to accurately judge the state.

[0123] Step S205: Remove the knife. When it is necessary to remove the knife from the storage cavity 911, the operator manually drives the moving bracket 93 to slide it from the adsorption position to the release position. At this time, the magnetic element 92 deviates from the storage cavity 911, the knife is released from the adsorption state, and the operator can easily pour the knife out of the storage cavity 911.

[0124] The present invention indirectly determines whether the tool magazine assembly 4 is empty by setting a detection device on the drive component and detecting the movement state of the movable part of the drive component or the tool top block.

[0125] This invention incorporates a magnetic element on the housing of the tool storage component, with the magnetic force of the element being switchable. During normal operation of the cutting machine, the storage component is switched to the adsorption state, magnetically attracting and securing the tools that have fallen into the storage cavity. This effectively prevents tool collisions and bouncing caused by platform vibrations, significantly reducing noise and improving the working experience in quiet environments such as offices and sample rooms. When it is necessary to remove the tool, the storage component is switched to the release state, releasing the tool and allowing the operator to easily empty it, thus fulfilling the dual requirements of quiet storage and convenient retrieval.

[0126] This invention ensures that the tool remains vertical during lifting by utilizing the cooperation between the tool top block and the tool shoulder of the lifting assembly, as well as the alignment of the tool top by the limiting part, thus preventing swaying or tilting. Simultaneously, the groove design on the lifting part further protects the cutting edge. Furthermore, the automatic advancement mechanism, composed of a tool-pulling component and an elastic biasing component, automatically advances subsequent tools to the tool-retrieving station whenever the foremost tool is removed, achieving continuous and efficient automatic tool retrieval without manual intervention.

[0127] In summary, this invention, through ingenious mechanical structure design, achieves automatic alignment between the tool magazine and the tool retrieval component, detection of whether the tool magazine component is empty, tool lifting and automatic advancement, and silent storage and convenient retrieval of the tools, forming a complete automated tool changing solution that significantly improves the automation level and operational reliability of the cutting machine.

Claims

1. A tool changing device, applied to a cutting machine, the cutting machine including a movable trolley tool holder, the trolley tool holder being provided with a magnetic suction element for adsorbing the tool, characterized in that, The tool changing device includes: A single-tool magazine assembly for holding at least one tool; A tool lifting assembly is movably mounted on the tool magazine assembly for removing the tool from its storage position within the tool magazine assembly; A driving component is connected to the lifting assembly for providing driving force for the movement of the lifting assembly; A storage component is provided on one side of the tool magazine assembly for retrieving tools removed from the carriage tool holder; The tool magazine assembly includes a mounting bracket and a tool magazine body. The tool magazine body is mounted on the mounting bracket in a manner that allows it to move in a horizontal plane, and the tool magazine body is provided with an alignment structure for cooperating with the carriage tool holder to achieve automatic alignment.

2. The tool changing device according to claim 1, characterized in that, The storage component includes: A box body having a storage cavity and an opening communicating with the storage cavity; A magnetic element is disposed on the box body to apply a magnetic force to the knife inside the storage cavity; The magnetic force exerted by the magnetic element on the cutter within the storage cavity is configured to be switchable, allowing the storage component to switch between an adsorption state for securing the cutter and a release state for releasing the cutter.

3. The tool changing device according to claim 1, characterized in that, The tool changing device also includes a clamping assembly disposed above the storage component and corresponding vertically to the opening of the storage component; The clamping assembly includes at least two relatively movable clamping members and a clamping drive device for driving the relative movement of the clamping members. The clamping assembly is used to clamp the bottom of the tool when the tool is unloaded from the tool holder.

4. The tool changing device according to claim 1, characterized in that, The tool magazine body is provided with at least one track for accommodating tools. The bottom of the track is provided with a support structure for supporting the shoulder of the tool and keeping the cutting edge of the tool at a distance from the bottom surface of the track.

5. The tool changing device according to claim 4, characterized in that, The tool magazine assembly also includes an automatic advance mechanism, which comprises: A tool-pulling component is slidably disposed within the track and located on the side of the tool away from the exit end of the track; An elastic biasing element is connected between the tool magazine body and the tool release member, for applying a biasing force toward the tool release end to the tool release member.

6. The tool changing device according to claim 1, characterized in that, The lifting assembly includes: A tool top block is vertically slidably mounted on the tool magazine body. The tool top block has a tool lifting part located below the tool exit end of the internal track of the tool magazine body. It is used to abut against the shoulder of the tool and lift the tool when it rises. An elastic reset component is connected between the tool magazine body and the tool top block, and is used to drive the tool top block to reset downward.

7. The tool changing device according to claim 6, characterized in that, The tool changing device further includes a detection device disposed on the drive component, used to detect the movement state of the movable part of the drive component or the tool top block, and output a signal based on the movement state, the signal being used to indicate whether the tool magazine assembly carries a tool.

8. The tool changing device according to claim 7, characterized in that, The detection device includes a sensor module, and the detection end of the sensor module is located at the top of the stroke of the movable part of the driving component; When the tool top block carries the tool, the movable part can move to the top of the stroke and trigger the sensor module to output a first signal; when the tool magazine assembly is in an empty tool state, the tool release member of the tool magazine assembly is driven to the top of the tool lifting assembly, and the movable part and the tool lifting assembly are blocked at the bottom of the tool release member and cannot reach the top of the stroke, and the sensor module outputs a second signal different from the first signal.

9. A cutting machine, characterized in that, include: One operating platform; A tool holder is movably mounted above the operating platform, and the tool holder is equipped with a magnetic suction device for adsorbing the tool. A tool changing device as described in any one of claims 1-8, wherein the tool magazine assembly and the storage component of the tool changing device are disposed on the operating platform; A control system is electrically connected to the clamping drive device of the carriage tool holder, the drive component, and the clamping assembly, for controlling the coordinated action of each component to perform automatic tool picking and / or automatic tool unloading operations.

10. An automatic tool changing method based on the cutting machine of claim 9, characterized in that, This includes an automatic tool retrieval process; the automatic tool retrieval process includes: Alignment step: Control the carriage tool holder to move above the tool magazine assembly and lower it. Through the guiding effect between the alignment structure on the tool magazine body and the mating structure on the carriage tool holder, the tool magazine body moves horizontally relative to the mounting bracket until the carriage tool holder and the tool magazine body are aligned at the tool retrieval station. Tool lifting step: Control the drive component to drive the tool lifting assembly to rise, lifting the tool located in the tool magazine body to the handover position; Tool retrieval procedure: The tool located at the transfer position is attracted and removed by the magnetic attachment on the tool holder of the sports car.

11. The automatic tool changing method according to claim 10, characterized in that, It also includes an automatic tool unloading process, which includes: Clamping step: Control the carriage tool holder to move the tool to be recycled to the top of the storage component, and control the clamping assembly to clamp the bottom of the tool; Demagnetization step: Control the movement of the carriage tool holder to disengage the magnetic attraction component from the tool; Release and recovery step: Control the clamping assembly to release the tool, so that the tool falls into the storage cavity of the storage component under the action of gravity.

12. The automatic tool changing method according to claim 10, characterized in that, The automatic tool removal process also includes a detection step: the motion state of the movable part of the drive component or the tool lifting assembly is detected by a detection device set on the drive component; If the movable part is detected to have moved to the top of its stroke, it is determined that the tool carried on the tool lifting assembly can be lifted to the tool carriage, and a tool removal success signal is output. If the movable part is detected to be blocked at the bottom position of the tool shifter and unable to reach the top of the stroke, it is determined that there is no tool in the tool magazine body. The tool shifter is pushed out of the track by the elastic bias member, blocking the upward movement of the tool shifter, and outputting a tool magazine empty signal.

13. The automatic tool changing method according to claim 11, characterized in that, After the release and recovery step in the automatic tool unloading process, an adsorption and fixing step is also included: the magnetic element of the storage component is switched to the adsorption state, so that the magnetic element adsorbs and fixes the tool that has fallen into the storage cavity.

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