Tool changing device and cutting machine

Abstract

A tool changing device (200) applicable to a cutting machine (100); wherein the cutting machine (100) comprises a movable slide tool holder (2) equipped with a magnetic holding element (22) for suction of tools (3), characterized in that the tool changing device (200) comprises: a tool magazine assembly (4) for holding at least one tool (3); a lifting assembly (5) which is movably arranged on the tool magazine assembly (4) to move a tool (3) out of a storage position within the tool magazine assembly (4) from the at least one tool (3); a drive element (6) which is force-fitted to the lifting assembly (5) in order to provide a driving force for the movement of the lifting assembly (5); and a receiving / storage component (9) which is arranged laterally to the tool magazine assembly (4) to receive tools (3) deposited from the slide tool holder (2); wherein the tool magazine assembly (4) comprises a mounting stand (41) and a tool magazine body (42); the tool magazine body (42) is arranged on the mounting stand (41) such that it can move in a horizontal plane; the tool magazine body (42) is provided with an alignment structure (422) which serves to interact with the slide tool holder (2) to realize automatic positioning.

Description

Technical field

[0001] The present application relates to the technical field of cutting processing devices, in particular a tool changing device for a cutting machine and a cutting machine comprising this tool changing device. State of the art

[0002] Small sheet material cutting machines are widely used in industries such as mobile phone screen protectors, promotional material manufacturing, pattern cutting in the clothing industry, printing, and packaging. These machines are primarily used for the precise cutting of flexible, flat materials such as films, paper, cardboard, adhesive film, fabric, leather, and so on. Cutting machines typically employ a carriage-tool holder structure, with a magnet integrated into the tool holder. This magnet uses magnetic force to attract and secure various types of cutting tools (such as oscillating blades, drawing blades, creasing blades, etc.) to perform high-speed cutting operations along a predetermined path.

[0003] With the increasing complexity of cutting processes and the rising level of automation in production, it is often necessary to change between different tools frequently within a single machining step. Therefore, tool magazine systems that enable automatic tool changes have become a key component for increasing the automation level of cutting machines. While some automatic tool changing devices for small cutting machines already exist, in practical applications the requirements for positioning accuracy of the tool magazine are high, and installation and adjustment are difficult. Conventional tool magazines are typically permanently installed on the cutting machine's work platform.After prolonged back-and-forth operation, the repeatability of the slide toolholder at the tool removal position can deviate, and there are also assembly inaccuracies in the tool magazine itself. The accumulation of these errors often results in the tool removal component of the toolholder and the tool ejection position of the magazine not being precisely aligned, leading to failed tool removals or tool damage. To address this problem, existing technology typically relies on high-precision manufacturing and assembly or adds complex visual positioning and sensor detection systems, which significantly increases costs and limits the adoption of automatic tool changing technology in small cutting machines.

[0004] In summary, existing technology lacks a tool changing system that solves the problem of automatic tool magazine positioning while combining a compact design with cost-effectiveness. How to provide a tool changing device and a cutting machine that offer reliable positioning, a simple structure, and low cost is a technical problem that experts in this field urgently need to address. Content of the present application

[0005] The purpose of the present application is to provide a tool changing device and a cutting machine that solves the problems of difficult positioning and high costs of tool magazines in existing technology.

[0006] To achieve the above-mentioned goal, a tool changing device applicable to a cutting machine is provided in a first aspect, wherein the cutting machine comprises a movable slide tool holder equipped with a magnetic holding element for suction of tools, characterized in that the tool changing device comprises: a tool magazine assembly for holding at least one tool; a lifting assembly that is movably arranged on the tool magazine assembly to move a tool from at least one tool out of a storage position within the tool magazine assembly; a drive component that is force-fitted to the lifting assembly in order to provide a driving force for the movement of the lifting assembly; and a receiving / storage component that is arranged laterally to the tool magazine assembly to receive tools deposited from the slide tool holder; wherein the tool magazine assembly comprises a mounting stand and a tool magazine body; the tool magazine body is arranged on the mounting stand in such a way that it can move in a horizontal plane; the tool magazine body is provided with an alignment structure which serves to interact with the slide tool holder to achieve automatic positioning.

[0007] In some embodiments, a movement groove is provided on the mounting stand in which the tool magazine body is movably arranged; the tool magazine body has a retaining flange around its upper side, by which the tool magazine body is suspended on the edge of the movement groove of the mounting stand.

[0008] In some embodiments, the receiving / storage component includes: a container with a receiving chamber and an opening connected to the receiving chamber; and a magnetic element attached to the container to exert a magnetic force on the tools in the receiving space; wherein the magnetic force effect of the magnetic element on the tools in the receiving space is configured in such a way that it is switchable, so that the receiving / storage component can be switched between a suction state for sucking in and fixing tools and a release state for releasing tools.

[0009] In some embodiments, the tool changing device comprises a gripper assembly arranged above the receiving / storage component, the position of which in the vertical direction corresponds to the opening of the receiving / storage component; the gripper assembly comprises at least two gripper elements movable relative to each other and a drive device for driving the relative movement of the gripper elements, the gripper assembly serving to grip the bottom of the tool when a tool is placed from the slide tool holder.

[0010] In some embodiments, at least one guide track for receiving tools is provided in the tool magazine body, wherein the bottom of the guide track is provided with a support structure that serves to support the shank extension of the tool and to keep the cutting edge of the tool at a distance from the bottom of the guide track.

[0011] In some embodiments, the tool magazine assembly includes an automatic feed mechanism, wherein the automatic feed mechanism comprises: a sliding element that is slidably arranged in the guideway and is located on a side of the tool that is away from the output end of the guideway; and an elastic preloading element connected between the tool magazine body and the sliding element to exert a preload force on the sliding element in the direction of the output end.

[0012] In some embodiments, the lifting assembly includes: a tool lifting block arranged to be vertically displaceable on the tool magazine body; wherein the tool lifting block has a lifting section located below an exit end of the guide track in the tool magazine body and serving to engage with a shank extension of the tool during lifting and to lift the tool; and an elastic return element connected between the tool magazine body and the tool lifting block to return the tool lifting block downwards to its starting position.

[0013] In some embodiments, the tool changing device includes a sensing device attached to the drive part to detect the state of motion of a moving part of the drive part or the tool lifting block and, based on this state of motion, to output a signal indicating whether the tool magazine assembly is carrying a tool or not.

[0014] In some embodiments, the sensing device comprises a sensor module, wherein the sensing port of the sensor module is located at the upper end of the stroke of the moving part of the drive part; when the tool lifting block carries a tool, the moving part can move to the upper end of its stroke and cause the sensor module to output a first signal; when the tool magazine assembly is in an empty state, the sliding element of the tool magazine assembly is driven beyond the lifting assembly, and the moving part and the lifting assembly are prevented by the bottom of the sliding element from reaching the upper end of the stroke, whereupon the sensor module outputs a second signal different from the first signal.

[0015] A second aspect is the provision of a cutting machine, which includes: a work platform; a sliding tool holder which is movably arranged above the work platform; wherein the sliding tool holder is equipped with a magnetic holding element for suction of tools; a tool changing device according to the first aspect, wherein the tool magazine assembly and the receiving / storage component of the tool changing device are arranged on the work platform; a control system that is electrically connected to the slide tool holder, the drive part, and a drive device of a gripper assembly of the tool changing device to control the coordinated action of the individual components to perform an automatic tool picking and / or automatic tool dropping operation. Beneficial effects

[0016] Compared to existing technology, the tool changing device and cutting machine provided by the present application exhibit the following advantageous effects: It enables passive adaptive positioning between the tool magazine and the tool holder, thereby reducing the dependence on assembly accuracy. The present application achieves mechanical passive adaptive positioning by arranging the tool magazine body so that it can move horizontally on the mounting stand and by utilizing the guiding action between the alignment structure on the tool magazine body and the corresponding structure on the slide tool holder.When the slide toolholder lowers to pick up the tool, the alignment structure can automatically guide the tool magazine body into a fine adjustment, even in the event of certain positioning errors of the toolholder or assembly errors of the magazine, thus ensuring precise alignment of the tool removal groove and the tool ejection hole. This design eliminates the need for high-precision manufacturing, assembly, or complex sensor and positioning systems, significantly reducing costs while simultaneously increasing the reliability of the tool removal process. Brief description of the drawings

[0017] In order to illustrate the technical solutions in the embodiments of the present application more clearly, the drawings required in the description of the embodiments are briefly presented below. Fig. Figure 1 shows a schematic structural view of a cutting machine according to some embodiments of the present application. Fig. Figure 2 shows an unfolded schematic structural view of a cutting machine according to some embodiments of the present application. Fig. Figure 3 shows another unfolded schematic structural view of a cutting machine according to some embodiments of the present application. Fig. Figure 4 shows an unfolded schematic structural view of a tool changing device according to some other embodiments of the present application. Fig. Figure 5 shows a schematic structural view of a slide tool holder and a tool according to some embodiments of the present application. Fig. Figure 6 shows a half-section schematic structural view of a slide tool holder according to some embodiments of the present application. Fig. Figure 7 shows an unfolded schematic structural view of a tool magazine assembly and a lifting assembly according to some embodiments of the present application. Fig. Figure 8 shows an unfolded schematic structural view of a tool magazine assembly, a lifting assembly, and a drive part according to some embodiments of the present application. Fig. Figure 9 shows a half-section perspective structural view of a tool magazine assembly according to some embodiments of the present application. Fig. Figure 10 shows an unfolded schematic structural view of a drive part and a detection device according to some embodiments of the present application. Fig. Figure 11 shows an unfolded schematic structural view of a gripper assembly and a receiving / storage component according to some embodiments of the present application. Fig. Figure 12 shows a half-section schematic structural view of a gripper assembly and a receiving / storage component according to some embodiments of the present application. Fig. Figure 13 shows a schematic structural view of a cutting machine with mounted gripper assembly and receiving / storage component according to some embodiments of the present application.

[0018] Drawing reference symbols: 100 - cutting machine, 200 - tool changing device; 1 - Work platform; 11 - Connecting groove; 12 - Main frame body; 121 - Mounting window; 2 - Slide tool holder; 21 - Tool removal groove; 211 - Limiting ring; 22 - Magnetic holding element; 221 - Mounting groove; 23 - Drive element; 24 - Conical guide section; 3 - Tool; 31 - Conical head; 32 - Shank attachment; 33 - Cutting edge; 4 - Tool magazine assembly; 41 - Mounting stand; 411 - Mounting hole; 412 - Movement groove; 413 - Insertion groove; 414 - Detent groove; 42 - Tool magazine body; 421 - Retaining flange; 422 - Alignment structure; 423 - Tool ejection hole; 424 - Guide track; 4241 - Ejection end; 4242 - Starting end; 425 - Step structure; 426 - Guide groove; 427 - Mounting groove; 428 - First connecting section; 429 - Second connecting section; 420 - Limiting section; 43 - Tool magazine cover; 431 - Second movement groove; 432 - Insertion section; 433 - Detent section; 4331 - Hook projection; 4332 - Operating section; 4333 - Cover cap; 44 - Sliding element; 441 - Connecting body; 45 - First elastic element; 5 - Lifting assembly; 51 - Tool lifting block; 511 - Lifting section; 512 - Stop groove; 513 - Slide section; 514 - Receiving section; 52 - Second elastic element; 53 - Guide rod; 6 - Drive unit; 61 - Frame; 611 - Through opening; 62 - Slide; 621 - Recess; 63 - Threaded spindle; 64 - Threaded spindle nut; 65 - Sliding element; 66 - Drive motor; 67 - Connecting rod; 7 - Detection device; 71 - Sensor module; 711 - Detection port; 8 - Gripper assembly; 81 - Gripper element; 82 - Drive device; 821 - Rotary drive motor; 83 - Fixed gripper arm; 831 - First elastic damping element; 84 - Movable gripper arm; 841 - Second elastic damping element; 85 - Mounting bracket; 86 - Boundary element; 9 - Receiving / storage component; 91 - Container; 911 - Receiving space; 912 - Opening; 913 - Guide rail; 914 - Limiting section; 915 - Guide structure; 916 - Locking strip; 92 - Magnetic element; 93 - Movable holder; 931 - Snap-in section; 94 - Deformation plate; 941 - Starting end; 942 - Locking end; 9421 - Hook section; 943 - Release end. Detailed description of the embodiments

[0019] The purpose of this application is to provide an integrated automatic tool changing solution for a cutting machine. This solution achieves passive mechanical adaptive positioning between the slide tool holder and the tool dispensing position of the magazine by combining a "movable tool magazine body" with an "alignment and guidance structure." The detection device attached to the drive unit enables intelligent detection of the tool removal status. A receiving / storage component with a magnetic element featuring switchable magnetic action combines quiet storage and convenient tool removal. Building upon this, the application further integrates functional modules such as protected tool storage, automatic feed, and soft lifting to form a complete automatic tool changing system.

[0020] Experts in this field should understand that the core concept of the present application is applicable to various types of cutting devices, including but not limited to oscillating knife cutting machines, laser cutting machines (only the tool removal part), inkjet cutting machines, etc.; it can be applied to various scenarios requiring automatic tool changing, not limited to tools but also other types of finished parts.

[0021] As in the Fig. 1, Fig. 2 to Fig. As shown in Figure 3, the present application provides a cutting machine 100 comprising a work platform 1, a slide tool holder 2, a tool changing device 200, and a control system (not shown).

[0022] As in the Fig. 1, Fig. 2 to Fig. As shown in Figure 3, the work platform 1 is a flat work surface for carrying the sheet material to be cut. A connecting groove 11 is provided on the work platform 1 for mounting relevant components of the tool changing device 200. The base of the work platform 1 has a main frame body 12, the interior of which is hollow to accommodate components described below, such as a gripper assembly 8.

[0023] As in the Fig. 3, Fig. 4, Fig. 5 to Fig. As shown in Figure 6, the slide tool holder 2 is arranged to be movable in three axes above the work platform 1 and can be precisely positioned along the X, Y, and Z directions, for example, driven by a three-axis motion slide. A tool removal groove 21 is provided on the bottom of the slide tool holder 2, in which a magnetic holding element 22 is located. The magnetic holding element 22 serves to suction and fix the top of the tool 3. In a preferred embodiment, the magnetic holding element 22 has a receiving groove 221 that is adapted to the shape of the top of the tool 3, for example, a concave round groove, to receive a conical head 31 of the tool 3 and thus increase the stability of the suction and the positioning accuracy.

[0024] As in Fig. As shown in Figure 6, in an optional embodiment, the magnetic retaining element 22 is movably arranged in the tool removal groove 21 and connected to a drive element 23. This drive element 23 can be a linear drive element, such as a miniature electric cylinder, miniature pneumatic cylinder, or electromagnet, etc., which is fixedly mounted inside the slide tool holder 2, the output end of which is connected to the magnetic retaining element 22 and can move the magnetic retaining element 22 vertically in the tool removal groove 21. The tool removal groove 21 has a limiting ring 211 at its lower opening, which limits the excessive sliding of the magnetic retaining element 22 out of the lower stroke of the tool removal groove 21, while the inner ring 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 retaining element 22 and the limiting ring 211, which returns the magnetic retaining element 22 to its initial position, i.e. in the direction of the top of the slide tool holder 2.

[0025] During the tool removal process, after the slide toolholder 2 and the tool magazine assembly are positioned, the tool lifting block raises the tool 3 into the tool removal groove 21. The drive element 23 pushes the magnetic retaining element 22 downwards so that it comes into contact with the tool 3 and suctions it in place (when the drive element 23 moves the magnetic retaining element 22 downwards and it touches the top of the tool 3, the drive stops after the load increases). The control system controls the drive element 23 to retract or controls the entire slide toolholder 2 to lift.Since the tool is now firmly suctioned to the magnetic holding element 22, it follows the magnetic holding element 22 or the slide tool holder 2 upwards, thus completing the tool removal process. During this process, the drive element 23 or the three-axis motion slide carrying the slide tool holder 2 can be monitored in real time for its load by the control system. If a tool is carried along during lifting, the load is greater than in the idle state, and the control system can further assess whether the tool removal was successful.

[0026] As in Fig. As shown in Figure 4, the tool changing device comprises a tool magazine assembly 4, a lifting assembly 5, a drive part 6, a detection device 7, a gripper assembly 8, and a receiving / storage part 9.

[0027] As in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, the tool magazine assembly 4 comprises a mounting stand 41, a tool magazine body 42, an automatic feed mechanism, and a tool magazine cover 43.

[0028] The assembly stand 41 is slidably connected to the tool magazine body 42. As shown in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, the mounting stand 41 is a plate-shaped structure that is firmly attached to the work platform 1 of the cutting machine by means of several mounting holes 411 and fastening elements (such as screws). The mounting stand 41 is inserted into the connecting groove 11 on the work platform 1, and after assembly, its upper surface is essentially flush with the surface of the work platform 1 so as not to obstruct cutting operations.

[0029] As in Fig. As shown in Figure 7, a continuous movement groove 412 is provided in the mounting stand 41, the dimensions of which are slightly larger than the cross-section of the tool magazine body 42.

[0030] As in the Fig. 3, Fig. 7 and Fig. As shown in Figure 8, the tool magazine body 42 is a housing structure in which a space for receiving several tools 3 is formed. The tool magazine body 42 has a retaining flange 421 projecting outwards around its upper surface. The tool magazine body 42 is suspended by this retaining flange 421 from the edge of the movement groove 412 of the mounting stand 41. Since the retaining flange 421 and the edge of the movement groove 412 are in sliding contact and the dimensions of the movement groove 412 are larger than the main part of the tool magazine body 42, the tool magazine body 42 is allowed to slide freely in a limited area in a plane (i.e., the XY plane) parallel to the surface of the work platform 1 relative to the mounting stand 41.

[0031] As in Fig. As shown in Figure 7, the central area of ​​the upper surface of the tool magazine body 42 forms an upwardly projecting cylindrical projection which has a conical concave structure and forms an alignment structure 422. This alignment structure 422 serves to interact with the base of the slide tool holder 2. The base of the slide tool holder 2 has a corresponding conical guide section 24.

[0032] As an alternative solution, the alignment structure 422 can be a conical projection on the top of the tool magazine body 42, in which case a corresponding conical receiving groove would be provided on the bottom of the slide tool holder 2; or the alignment structure 422 can be a funnel-shaped opening whose inner wall is a conical guide surface, which also enables guide-based positioning.

[0033] As in Fig. As shown in Figure 9, a continuous tool ejection hole 423 is provided on the upper side of the tool magazine body 42. This hole is located in the center of the alignment structure 422 and is vertically aligned with an ejection end 4241 of a guide track 424, as described below. After the slide tool holder 2 and the tool magazine body 42 have completed automatic positioning, the tool removal groove 21 of the slide tool holder 2 and the tool ejection hole 423 are vertically aligned.

[0034] As in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, a linear guide track 424 is provided inside the tool magazine body 42. In some embodiments, the guide track 424 is a linear sliding groove. The guide track 424 defines a first end (the output end 4241, near the output hole 423) and a second end opposite the first end (the starting end 4242).

[0035] As in Fig. As shown in Figure 9, stepped structures 425 are arranged symmetrically along the longitudinal direction of the guideway 424 on both sides of its base, forming a support structure. These stepped structures 425 serve to support a shank extension 32 of the cylindrical tool 3. The upper surface of the tool 3 is a conical head 31 made of a magnetizable material such as iron, while the lower surface is a cutting edge 33 with a smaller diameter. When the shank extension 32 of the tool 3 rests on the stepped structures 425, the cutting edge 33 on the lower surface remains free above the base of the guideway 424 and maintains a certain distance from the base to prevent contact wear of the cutting edge 33 with the guideway 424.

[0036] As in Fig. As shown in Figure 7, the tool magazine assembly 4 further comprises an automatic feed mechanism comprising a sliding element 44 and a first elastic element 45. The sliding element 44 is a slide structure slidably arranged in the guide track 424 and is located on one side of the multiple tools 3 that is furthest from the output end 4241 (i.e., closely adjacent to the last tool). A guide groove 426 is formed in the side wall of the tool magazine body 42, with at least a portion of one side of the sliding element 44 projecting beyond the guide groove 426 and forming a connecting body 441 designed for connecting the first elastic element 45.

[0037] The first elastic element 45 is attached to the side wall of the tool magazine body 42. In some embodiments, the first elastic element 45 is preferably a torsion spring. A mounting groove 427 for receiving this torsion spring is provided on the side wall of the tool magazine body 42. One leg of the torsion spring is connected to the sliding element 44, and the other leg rests against the tool magazine body 42. This torsion spring constantly exerts an elastic preload force on the sliding element 44 in the direction of the dispensing end 4241 to push the entire row of tools to the dispensing end 4241 and to ensure that the foremost tool is always positioned at the removal position at the dispensing end 4241.

[0038] Furthermore, a detent structure is arranged on the base of the sliding element 44, which engages with the stop groove 512 formed in the lifting section 511. When the tool magazine assembly 4 is empty, i.e., when no tool is in the guide track 424, the sliding element 44 can, under the action of the first elastic element 45, slide out of the guide track 424 with a portion of its outer surface. This portion, protruding from the guide track 424, has its detent structure engage in the stop groove 512, while the connecting body 441 of the sliding element 44 remains in the guide groove 426. Thus, the sliding element 44 is in a limited position in the vertical direction. When the detent structure engages in the stop groove 512, the tool lifting block 51 cannot be lifted by the moving part.

[0039] As an alternative embodiment, the first elastic element 45 can be a tension spring, compression spring or leaf spring or another elastic element, as long as it can impose a sustained preload force on the sliding element 44.

[0040] As in Fig. As shown in Figure 7, the tool magazine assembly 4 further comprises a tool magazine cover 43. The tool magazine cover 43 is detachably connected to the mounting stand 41 and covers the top of the tool magazine body 42 to prevent vertical displacement of the tool magazine body 42 and to avoid accidental lifting during the tool removal process.

[0041] A second movement groove 431 is arranged in the tool magazine cover 43, through which the alignment structure 422 projects upwards on the top of the tool magazine body 42. The dimensions of the second movement groove 431 are slightly larger than the projecting cylindrical projection of the alignment structure 422, so that the alignment structure 422 can be moved horizontally within the second movement groove 431 without impeding the adaptive alignment function of the tool magazine body 42.

[0042] As in Fig. As shown in Figure 7, the tool magazine cover 43 and the assembly stand 41 are connected to each other via a snap-fit ​​connection. Specifically, one end of the tool magazine cover 43 has at least one downward-projecting insertion section 432, while the opposite end has a locking section 433. Corresponding plug-in slots 413 for the insertion section 432 and locking slots 414 for the locking section 433 are arranged on the assembly stand 41.

[0043] During assembly, the insertion section 432 is first inserted obliquely into the slot 413, then the tool magazine cover 43 is pressed downwards, whereby the locking section 433, after elastic deformation, engages in the locking groove 414. A hook projection 4331 is attached to the locking section 433, which, when engaged, hooks onto the underside of the locking groove 414 and provides reliable locking. An operating section 4332 is also attached to the upper side of the locking section 433, which in some embodiments is detachably connected to a cover cap 4333. To disassemble, the operator pushes the operating section 4332 forward (e.g.,(in the tool feed direction), which elastically deforms the detent section 433, releases the hook projection 4331 from the detent groove 414, then one end of the tool magazine cover 43 can be lifted and pulled out in the opposite direction to the insertion section 432 in order to remove the tool magazine body 42 for replacement. This snap connection is user-friendly, requires no additional tools and allows for quick installation and removal of the tool magazine body 42.

[0044] As in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, the lifting assembly 5 is attached to the tool magazine body 42 of the tool magazine assembly 4 in order to lift the tool 3 located in the tool magazine body 42 so that it can be picked up by the slide tool holder 2.

[0045] As in Fig. As shown in Figure 7, the lifting assembly 5 comprises a tool lifting block 51, a second elastic element 52, and a guide device.

[0046] As in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, the tool lifting block 51 is preferably designed in some embodiments as a U-shaped structure, the U-shaped opening of which faces the tool magazine body 42 and which is arranged to slide around at least a part of the tool magazine body 42. This compact design allows the tool lifting block 51 to make optimal use of the space around the tool magazine body 42.

[0047] As in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, one end of the tool lifting block 51 forms a lifting section 511 near the discharge end of the guideway 424. This lifting section 511 is located directly below the discharge end 4241 of the guideway 424 and, in its initial state, is vertically aligned with the tool at the discharge end 4241. A stop groove 512 is formed on the lifting section 511, the width and depth of which are designed to precisely accommodate the cutting edge 33 of the tool. When the tool lifting block 51 rises, the cutting edge 33 of the tool enters this stop groove 512, while simultaneously the upper end surface of the lifting section 511 rests against the shank extension 32 of the tool, thus lifting the tool vertically out of the guideway 424.

[0048] As in Fig. As shown in Figure 7, one end of the other side wall of the tool lifting block 51, which is furthest from the output end of the guide track 424, forms a slide section 513. A first connecting section 428 and a second connecting section 429 are arranged projecting from the bottom of the tool magazine body 42. The first connecting section 428 serves to mount the guide device, which in some embodiments is a vertically arranged guide rod 53. The upper side of the guide rod 53 is attached to the upper limit flange 421 of the tool magazine body 42, and the lower side to the first connecting section 428. The tool lifting block 51 is arranged to slide around this guide rod 53 in order to guide a stable vertical movement of the tool lifting block 51.

[0049] As in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, the second elastic element 52 is connected between the tool magazine body 42 and the tool lifting block 51 to return the tool lifting block 51 downwards to its initial position. In some embodiments, the second elastic element 52 is preferably a tension spring. One end of the tension spring is connected to the second connecting section 429 at the bottom of the tool magazine body 42, and the other end to a corresponding connection point on the tool lifting block 51. Without external forces, the second elastic element 52 holds the tool lifting block 51 in the initial position, with the upper end face of the lifting section 511 being flush with or slightly below the upper surface of the stepped structure 425 of the guide track 424 to ensure smooth advancement of the tool.

[0050] As an alternative embodiment, the second elastic element 52 can be a compression spring, whereby only the mounting location needs to be adapted so that it can exert a downward restoring force on the tool lifting block 51.

[0051] As in Fig. As shown in Figure 7, a receiving section 514 is attached to the outside of the tool lifting block 51 (i.e., at the base of the U-shaped structure), which serves for a force-fit connection with the drive part 6 of the cutting machine 100. The receiving section 514 can be a projection extending outwards from the tool lifting block 51 or a platform, the lower surface of which serves to abut a connecting rod 67 of the drive part 6.

[0052] As in Fig. As shown in Figure 8, a limiting section 420 is also attached to the tool magazine body 42. This limiting section 420 is located above the discharge end 4241 of the guide track 424, for example, on the top of the tool magazine body 42 near the discharge hole 423. The limiting section 420 is precisely aligned vertically with the lifting section 511. When the tool lifting block 51 lifts the tool, the top of the tool (the area below the conical head 31) is supported by the limiting section 420, which performs a guiding and limiting function to prevent the tool from tilting or leaving the track during the lift and to ensure that the tool can enter the upper tool removal groove 21 perpendicularly and precisely.

[0053] As in the Fig. 2 and Fig. As shown in Figure 3, the drive part 6 is mounted on a frame 61 of the cutting machine 100, is located to the side of the lifting assembly 5 and is positively connected to the tool lifting block 51 in order to move the tool lifting block 51 in a vertical direction.

[0054] In a preferred embodiment, the drive part 6 comprises a threaded spindle gear assembly. As described in the Fig. 8 and Fig. As shown in Figure 10, this threaded spindle gear assembly comprises a slide 62, a threaded spindle 63, a threaded spindle nut 64, a sliding element 65, a drive motor 66, and a connecting rod 67.

[0055] As in the Fig. 8 and Fig. As shown in Figure 10, the sled 62 is an elongated base which is firmly mounted to the side wall of the frame 61 by means of fastening elements such as screws and extends vertically in its longitudinal direction.

[0056] As in the Fig. 8 and Fig. As shown in Figure 10, the threaded spindle 63 is rotatably mounted in the slide 62, its axis running parallel to the vertical. The upper or lower end of the threaded spindle 63 is connected to the output shaft of the drive motor 66 via a coupling and is driven by the motor to rotate.

[0057] As in the Fig. 8 and Fig. As shown in Figure 10, the threaded spindle nut 64 is threaded with the threaded spindle 63; when the threaded spindle 63 rotates, the threaded spindle nut 64 moves along the axis of the threaded spindle 63.

[0058] As in the Fig. 8 and Fig. As shown in Figure 10, the sliding element 65 is fixedly connected to the threaded spindle nut 64 and slides on the carriage 62. Guide rails or sliding groove structures are arranged on the carriage 62, on which the sliding element 65 can slide stably. The sliding element 65 forms a "movable part" of the drive part 6.

[0059] As in Fig. As shown in Figure 10, the connecting rod 67 is a rod-shaped element, one end of which is fixedly connected to the sliding element 65 and the other end of which extends towards the tool lifting block 51 in order to bear against or be connected to the receiving section 514 of the tool lifting block 51. The up and down movement of the sliding element 65 is transmitted via the connecting rod 67 to the tool lifting block 51, which moves it synchronously.

[0060] As in the Fig. 2 and Fig. As shown in Figure 3, a recess 621 is provided in the slide 62 at the position opposite the connecting rod 67 to accommodate the movement path of the connecting rod 67. The connecting rod 67 passes through this recess 621 and protrudes from the slide 62. Furthermore, a through-opening 611 is provided in the frame 61, which corresponds to the recess 621 of the slide 62. After the connecting rod 67 has successively passed through the recess 621 and the through-opening 611, it is connected to the receiving section 514 of the tool lifting block 51. This multi-layered feedthrough structure enables compact mounting of the drive unit 6 on the side wall of the frame 61 while simultaneously ensuring linear and smooth power transmission.

[0061] As an alternative embodiment, the drive part 6 can be a pneumatic cylinder gear unit, a linear motor gear unit, or a cam gear unit, as long as it can move the tool lifting block 51 in a vertical direction.

[0062] As in the Fig. 8 and Fig. As shown in Figure 10, the detection device 7 is attached to the drive part 6 to detect the state of movement of the moving part of the drive part (in these embodiments the sliding element 65) or of the tool lifting block 51 and, based on this state of movement, to output a signal indicating whether the tool magazine assembly 4 carries a tool, i.e., whether it is in an empty state.

[0063] As in Fig. As shown in Figure 10, in some embodiments the sensing device 7 comprises a sensor module 71. The sensor module 71 is mounted on the slide 62 via a holder, and its sensing port 711 is located at the upper end of the stroke of the sliding element 65 (i.e., the highest position that the sliding element 65 can reach). The sensor module 71 can be a proximity switch, an optical switch, or a microswitch.

[0064] The operating logic of the recording device 7 is as follows. Scenario 1: The tool lifting block 51 does not carry a tool (i.e., the tool magazine assembly 4 is empty)

[0065] When the tool magazine assembly 4 is empty, i.e., no tool is in the guideway 424, the sliding element 44 can, under the action of the first elastic element 45, slide out of the guideway 424 with a portion of its outer surface. This portion, protruding from the guideway 424, has a detent structure that engages in the stop groove 512, while the connecting body 441 of the sliding element 44 remains in the guide groove 426. Thus, the sliding element 44 is in a limited position in the vertical direction. When the detent structure engages in the stop groove 512, the tool lifting block 51 cannot be lifted by the moving part. When the drive motor 66 rotates the lead screw 63 and moves the sliding element 65 upwards, it is prevented from reaching its upper stroke due to the resistance.In this case, the sliding element 65 cannot trigger the sensor module 71; the sensor module 71 outputs an initial signal (e.g., a low-level signal). After the control system receives this initial signal, it can determine that the tool magazine assembly 4 is empty and send an alarm or stop command to the control system. Scenario 2: The tool lifting block 51 carries a tool and the tool is transferred normally.

[0066] When the tool lifting block 51 lifts a tool, its upward movement is unimpeded and continues. When the sliding element 65 reaches its upper stroke, it is locked at the top of the stroke, triggering the sensor module 71, which outputs a second signal (e.g., a high-level signal) different from the first. The top of the tool 3 enters the receiving groove 21 of the slide tool holder 2 and is drawn in by the movable, downward-moving magnetic holding unit 22 or a magnetic holding unit 22 fixed in a specific position. The control system receives this second signal and, in combination with the load change on the three-axis motion slide that carries the slide tool holder 2, determines that the tool removal was successful.

[0067] Through the detection logic described above, the present application uses a sensor module 71 attached to the upper stroke path in combination with the load change of the drive motor 66 to detect whether the tool magazine assembly 4 is in an empty state.

[0068] As in the Fig. 2 and Fig. As shown in Figure 3, the gripper assembly 8 is mounted on the work platform 1 of the cutting machine, and its gripping position corresponds in the vertical direction to the opening of the receiving / storage component 9 to ensure that the released tool 3 can fall precisely into the opening.

[0069] As in the Fig. 11 and Fig. As shown in Figure 12, the gripper assembly 8 comprises at least two gripper elements 81 that are movable relative to each other and a drive device 82 for driving the relative movement of the gripper elements 81.

[0070] The number of gripper elements 81 can vary. A preferred embodiment uses a two-jaw structure, i.e., two gripper elements 81 move relative to each other to perform the gripping function. Alternatively, a three-jaw structure can be used, in which three gripper elements 81 move synchronously towards the center, suitable for round tools or situations requiring centering.

[0071] In a preferred embodiment, the gripper assembly 8 comprises, as shown in the Fig. 11 and Fig. Figure 12 shows a fixed gripper arm 83 and a movable gripper arm 84. The fixed gripper arm 83 extends from the holder 85 through an opening 912 of the receiving / storage component 9, and the movable gripper arm 84 is movably attached to the holder 85. The drive device 82 is connected to the movable gripper arm 84 on the drive side and drives it relative to the fixed gripper arm 83 to grip or release the tool 3. This structure with one fixed and one movable arm offers the advantages of simple control and low cost and is suitable for most conventional tools.

[0072] The drive device 82 can be implemented in various ways to meet different application scenarios and performance requirements:

[0073] In a preferred embodiment, the drive device 82 uses a rotary drive motor 821. As described in the Fig. 3 and Fig. As shown in Figure 4, one end of the movable gripper arm 84 is fixedly connected to the output shaft of the rotary drive motor 821, and the rotary drive motor 821 rotates and directly drives the movable gripper arm 84 to pivot. This method is simple in design, reacts quickly, and is suitable for frequently repeated actions.

[0074] As an alternative embodiment, the drive device 82 uses a linear drive element. A linear drive element drives the movable gripping arm 84. The linear drive element can be: a pneumatic element (such as a single-acting cylinder, double-acting cylinder, pneumatic finger, etc.), suitable for situations requiring rapid response and a sufficient supply of compressed air; a hydraulic element (such as a hydraulic cylinder), suitable for situations requiring high gripping forces; and an electric linear drive (such as a lead screw motor, linear motor), suitable for situations requiring precise position and force control.

[0075] As in the Fig. 11 and Fig. As shown in Figure 12, a first elastic damping element 831 is attached to the gripping end of the fixed gripping arm 83, and a second elastic damping element 841 is attached to the gripping end of the movable gripping arm 84 to protect the surface and cutting edge of the tool 3 from damage. The elastic damping element can be a rubber or silicone sleeve that is slipped over the end of the gripping arm; it is soft and elastic. Elastic damping elements not only protect the tool 3 but also increase gripping friction and improve grip reliability.

[0076] As in the Fig. 11 and Fig. As shown in Figure 12, the gripper assembly 8 further comprises a limiting element 86 next to the drive device 82. The limiting element 86 serves to limit the movement or stroke angle of the movable gripper arm 84 in order to prevent excessive movement that could damage the mechanism or jam the tool 3. The limiting element 86 can be a mechanical stop (fixed to the holder 85, which rests against a specific point on the movable gripper arm 84) or a limit switch (which cuts off the drive current when the movable gripper arm 84 reaches its end position).

[0077] As in Fig. As shown in Figure 13, the receiving / storage component 9 is attached to one side of the tool magazine assembly 4 to receive tools 3 deposited from the slide tool holder 2.

[0078] As in the Fig. 11 and Fig. As shown in Figure 12, the receiving / storage component 9 comprises a container 91 and a magnetic element 92. The container 91 can be made of non-magnetic material such as plastic, nylon, aluminum alloy, etc., to avoid interference with the magnetic field lines. The container 91 defines a receiving space 911 for receiving the tool 3, the top of which has an opening 912 connected to the receiving space 911. The shape of the opening 912 can be rectangular, round, or oval; its dimensions should be larger than the maximum cross-section of the tool 3 to ensure that the tool 3 can fall into it smoothly.

[0079] As in the Fig. 11 and Fig. As shown in Figure 12, the magnetic element 92 is attached to the container 91 to exert a magnetic effect on the tool 3 in the receiving chamber 911. The magnetic effect of the magnetic element 92 on the tool 3 in the receiving chamber 911 is configured to be switchable. The receiving / receiving component 9 is configured to switch between a suction state and a release state. In the suction state, the magnetic field lines generated by the magnetic element 92 act on the receiving chamber 911 and hold the tool 3 in place and fixed; in the release state, the magnetic field lines generated by the magnetic element 92 essentially do not act on the receiving chamber 911, and the tool 3 is in a freely movable state.

[0080] There are various ways to implement the switchability of the magnetic effect; this embodiment offers a preferred embodiment:

[0081] Mechanical method of motion. As in Fig. As shown in Figure 12, the magnetic element 92 is mounted on a movable holder 93; the movement of the holder 93 changes the relative position of the magnetic element 92 to the receiving space 911 and thus the effective area of ​​the magnetic field lines.

[0082] The movable connection between the holder 93 and the container 91 is achieved by a sliding connection. As in Fig. As shown in Figure 11, both sides of the base of the container 91 have guide rails 913 extending in a first direction F (the sliding direction). The cross-section of the guide rails 913 can be T-shaped, L-shaped, dovetail-shaped, or cylindrical. The holder 93 has a U-shaped structure, the two side arms of which form sliding snap-fit ​​sections 931 with the guide rails 913, the shape of which corresponds to the guide rails 913. The magnetic element 92 is embedded in the base of the U-shaped structure. This U-shaped snap-fit ​​structure is easy to assemble, slides smoothly, and provides good guidance and stability.

[0083] To ensure that the holder 93 does not accidentally shift under the vibration conditions during cutting operations, a damped sliding connection is preferably arranged between the holder 93 and the container 91. The damping can be achieved by an interference fit: a slight interference is arranged between the snap-in section 931 and the guide rail 913, which generates frictional damping through the elasticity of the material.

[0084] As in Fig. As shown in Figure 11, limiting sections 914 are attached to both ends of the guide rails 913 to prevent the holder 93 from sliding out of the guide rails 913. The limiting section 914 can be a one-piece stop: a protruding stop is attached to the end of the guide rail 913, which rests against the end surface of the snap-in section 931 of the holder 93.

[0085] As an alternative embodiment, the magnetic element 92 can be an electromagnet in which the current is switched on and off and the current strength is regulated in order to adjust the magnetic force and to realize remote control of the intake and release state.

[0086] As in Fig. As shown in Figure 12, a guide structure 915 is attached to the bottom of the container 91. The guide structure 915 is located directly below the opening 912 and extends obliquely towards the receiving space 911. The guide structure 915 can be configured as an inclined plane: a smooth inclined plane on which the tool 3 slides after falling into the receiving space 911; or as a guide groove: a guide groove that limits the direction of fall of the tool 3 and prevents lateral deviations.

[0087] As in Fig. As shown in Figure 13, the receiving / storage component 9 is detachably mounted below the floor of the work platform 1 of the cutting machine. For example, the frame body 12 has a mounting window 121 on its floor for the receiving / storage component 9, the size of which corresponds to that of the receiving / storage component 9.

[0088] As in Fig.As shown in Figure 11, deformation plates 94 are attached to both sides of the receiving / storage component 9. The deformation plate 94 comprises a starting end 941, a locking end 942, and a release end 943. The locking 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 receiving / storage component 9 so that the top of the receiving / storage component 9 can be easily inserted upwards into the mounting window 121. The locking end 942 projects beyond the two side surfaces of the container 91, and the outer surface of the locking end 942 has a hook section 9421.

[0089] During the entire upward insertion process of the receiving / storage component 9, the deformation plate 94 continuously deforms towards the receiving / storage component 9 and narrows until the hook section 9421 engages the inner wall of the frame 12, forming a complete lock and thus securely fixing the receiving / storage component 9 in the mounting window 121. In this case, the release end 943 is still visible on the bottom surface of the frame body 12. If the receiving / storage component 9 needs to be removed, the user can press both release ends 943, causing the deformation plate 94 to deform further inwards towards the receiving / storage component 9 and releasing the hook section 9421 of the locking end 942 from the inner wall of the frame body 12. The receiving / storage component 9 can then be pulled downwards out of the mounting window 121.This snap connection is easy to use, requires no additional tools and allows for quick installation and removal of the receiving / storage component 9, which facilitates regular central handling or maintenance of the received tools for the user.

[0090] Based on the structure described above, the automatic tool change procedure of the cutting machine according to the present application is described in detail below. This procedure includes an automatic tool removal process and an automatic tool placement process. This automatic tool change procedure is controlled in a unified and coordinated manner by the control system, which is electrically connected to the slide tool holder 2, the drive unit 6, the drive device 82 of the gripper assembly 8, and the drive element 23.

[0091] Automatic tool removal process, step S101: Initial state. The tool magazine assembly 4 is fully loaded, and several tools 3 are arranged side by side in the guideway 424, their shank ends 32 being supported by the stepped structures 425, and the cutting edges 33 being free. The first elastic element 45 exerts a preload force on the row of tools via the sliding element 44 in the direction of the output end 4241, positioning the foremost tool at the removal position at the output end 4241. The tool lifting block 51 of the lifting assembly 5 is in the lowered initial position under the action of the second elastic element 52. The sliding element 65 of the drive unit 6 is in the lowered initial position.

[0092] Step S102: Moving and positioning. The control system of the cutting machine 100 controls the slide tool holder 2 to move over the tool magazine assembly 4 and begins to lower.

[0093] Step S103: Adaptive Calibration. The conical guide section 24 at the bottom of the slide toolholder 2 first engages the conical alignment structure 422 on the top of the tool magazine body 42. Due to the guiding effect of the conical surface, if there is a horizontal positional deviation between the slide toolholder 2 and the alignment structure 422, the descending toolholder 2 exerts a horizontal force component on the tool magazine body 42 and moves it to a minimal horizontal displacement within the movement groove 412 of the mounting stand 41 until the conical guide section 24 and the alignment structure 422 are completely aligned. In this case, the receiving groove 21 at the bottom of the slide toolholder 2 and the discharge hole 423 at the top of the tool magazine body 42 are precisely aligned in the vertical direction.Throughout the entire process, the second movement groove 431 in the tool magazine cover 43 provides sufficient space for the movement of the tool magazine body 42.

[0094] Step S104: Lifting the tool. After positioning is complete, the control system triggers the start of the drive part 6. The output end of the drive part 6 extends upwards and presses against the receiving section 514 of the tool lifting block 51, causing the entire tool lifting block 51 to rise along the guide rod 53 against the tensile force of the second elastic element 52.

[0095] During the ascent, the lifting section 511 initially approaches the tool at the output end 4241. The cutting edge 33 of the tool 3 enters the stop groove 512 of the lifting section 511, and the upper end surface of the lifting section 511 touches the shank extension 32 of the tool and begins to lift the tool 3.

[0096] As the tool lifting block 51 continues to rise, the tool 3 is lifted vertically out of the guide track 424. At the same time, the top of the tool 3 passes through the limiting section 420, which supports the conical head 31 of the tool 3 and ensures that the tool 3 always remains in an upright position.

[0097] When the tool 3 reaches its highest point (transfer position), its conical head 31 penetrates the output hole 423 and enters the receiving groove 21 of the slide tool holder 2.

[0098] Step S105: Tool removal and detection. The top of the tool 3, having entered the receiving groove 21, is drawn in by the magnetic holding element 22 and falls into the receiving groove 221 for positioning. If a movable magnetic holding element is used (i.e., the embodiments with the drive element 23), the control system at this point controls the drive element 23 to push the magnetic holding element 22 downwards, and the tool 3 touches the magnetic holding element 22 after the lifting process is complete and is drawn in; after successful suction, the control system controls the drive element 23 to retract and confirms, via the load change of the three-axis motion slide that carries the slide tool holder 2, that the tool has been firmly drawn in.

[0099] During the lifting process, the detection device 7 operates synchronously to detect whether the tool magazine assembly 4 is empty.

[0100] Step S106: Reset and feed. After successful tool removal, the control system issues a command; the slide tool holder 2 lifts off with the tool 3 and moves away. Simultaneously, the drive unit 6 retracts. The tool lifting block 51 automatically returns to its starting position under the tensile force of the second elastic element 52.

[0101] After the foremost tool has been removed, the preload force of the first elastic element 45 is released and pushes the sliding element 44 forward, thereby advancing a second tool in the guide track 424 to the removal position at the output end 4241, where it waits for the next tool removal command.

[0102] Step S107: Tool removal complete. The slide tool holder 2 moves the newly picked-up tool into the machining area and begins the cutting process.

[0103] Automatic tool placement process, step S201: Move and grip. When a tool change is required, the control system controls the slide tool holder 2 to move the tool to be returned over the receiving / placement component 9 so that the base of the tool is aligned with the gripping position of the gripper assembly 8.

[0104] The control system controls the start of the drive device 82, which moves the movable gripper arm 84 towards the fixed gripper arm 83, so that the two gripper elements together grasp the base of the tool. The first elastic damping element 831 and the second elastic damping element 841 contact the tool and provide damping and protection.

[0105] Step S202: Demagnetization. The control system controls the slide tool holder 2 to move (e.g., to lift upwards), thereby gradually moving the magnetic retaining element 22 in the slide tool holder 2 away from the top of the tool until the tool is completely released from the magnetic attraction of the magnetic retaining element 22.

[0106] Step S203: Release and Drop. The control system controls the gripper assembly 8 to release the tool, and the movable gripper arm 84 moves away from the fixed gripper arm 83. The tool falls freely under its own weight, is guided by the guide structure 915, and falls through the opening 912 into the receiving chamber 911.

[0107] Step S204: Suction and Fixing. Before step S203, the operator manually drives the movable holder 93 along the guide rail 913 to move it from the release position to the suction position. In this case, the magnetic element 92 embedded in the movable holder 93 is precisely aligned with the receiving space 911. The generated magnetic field lines act on the receiving space 911 and fix the tool that has fallen into the receiving space 911 by suction, in order to prevent collision noises caused by platform vibrations during the subsequent cutting operation.

[0108] In some embodiments, the base surface of the container 91 has semicircularly protruding locking strips 916; corresponding to the suction and release states, the movable holder 93 is equipped with matching locking tabs, so that position feedback is provided when locking into the corresponding state, which facilitates an accurate assessment of the state by the operator.

[0109] Step S205: Tool removal. When the tools need to be removed from the receiving chamber 911, the operator manually moves the movable holder 93 from the suction position to the release position. In this case, the magnetic element 92 is deflected from the receiving chamber 911, the tool is released from the suction state, and the operator can easily empty the tools from the receiving chamber 911.

[0110] The present application achieves an indirect assessment of whether the tool magazine assembly 4 is empty by attaching a detection device to the drive part, which detects the state of movement of the moving part of the drive part or of the tool lifting block.

[0111] The present application incorporates a magnetic element on the container of the tool retrieval / storage unit and makes its magnetic action switchable. During normal operation of the cutting machine, the retrieval / storage unit is switched to a suction state, whereby tools that have fallen into the receiving area are magnetically drawn in and held in place. This effectively prevents collisions and tool jumps caused by platform vibrations, thereby significantly reducing the resulting noise and improving the working experience in quiet environments such as offices or showrooms. When tools need to be removed, the retrieval / storage unit is switched to a release state, the tools are released from the suction state, and the operator can easily empty them, thus fulfilling the dual requirements of quiet storage and convenient removal.

[0112] The present application ensures, through the alignment of the tool lifting block of the lifting assembly with the shank of the tool, and the guidance and limitation of the tool's upper surface by the limiting section, that the tool remains in an upright position at all times during the lifting process, thus preventing any fluctuations or tilting. Simultaneously, the groove in the lifting section further protects the cutting edge. Furthermore, the automatic feed mechanism, consisting of the sliding element and the elastic preload element, enables the subsequent tool to be automatically advanced to the removal position each time the foremost tool is removed, thereby achieving a continuous and efficient automatic tool removal process without manual intervention.

[0113] In summary, the present application achieves, through clever mechanical structural design, automatic alignment between the tool magazine and the tool removal part, detection of whether the tool magazine assembly is empty, lifting and automatic advancement of tools, as well as quiet storage and convenient removal of tools, forming a fully automated tool changing solution that significantly improves the level of automation and operational reliability of the cutting machine.

Claims

[1] A tool changing device (200) applicable to a cutting machine (100); wherein the cutting machine (100) comprises a movable slide tool holder (2) equipped with a magnetic holding element (22) for suction of tools (3), characterized by , that the tool changing device (200) includes: a tool magazine assembly (4) for holding at least one tool (3); a lifting assembly (5) which is movably arranged on the tool magazine assembly (4) to move a tool (3) out of a storage position within the tool magazine assembly (4) from the at least one tool (3); a drive element (6) which is force-fitted to the lifting assembly (5) in order to provide a driving force for the movement of the lifting assembly (5); and a receiving / storage component (9) which is arranged laterally to the tool magazine assembly (4) to receive tools (3) deposited from the slide tool holder (2); wherein the tool magazine assembly (4) comprises a mounting stand (41) and a tool magazine body (42); the tool magazine body (42) is arranged on the mounting stand (41) such that it can move in a horizontal plane; the tool magazine body (42) is provided with an alignment structure (422) which serves to interact with the slide tool holder (2) to realize automatic positioning. [2] The tool changing device (200) according to claim 1, wherein the assembly stand (41) is equipped with a movement groove (412) in which the tool magazine body (42) is movably arranged; the tool magazine body (42) has a retaining flange (421) circumferentially on its upper side, by means of which the tool magazine body (42) is suspended on the edge of the movement groove (412) of the assembly stand (41). [3] The tool changing device (200) according to claim 1, wherein the receiving / storage component (9) comprises: a container (91) with a receiving space (911) and an opening (912) connected to the receiving space (911); and a magnetic element (92) attached to the container (91) to exert a magnetic force on the tools (3) in the receiving space (911); wherein the magnetic force effect of the magnetic element (92) on the tools (3) in the receiving space (911) is configured to be switchable, so that the receiving / storage component (9) can be switched between a suction state for suction and fixing tools (3) and a release state for releasing tools (3). [4] The tool changing device (200) according to claim 1, wherein the tool changing device (200) further comprises a gripper assembly (8) arranged above the receiving / storage component (9) and whose position in the vertical direction coincides with an opening (912) of the receiving / storage component (9); wherein the gripper assembly (8) comprises at least two gripper elements (81) movable relative to each other and a drive device (82) for driving the relative movement of the gripper elements (81), wherein the gripper assembly (8) serves to grip the bottom of the tool (3) when a tool (3) is placed from the slide tool holder (2). [5] The tool changing device (200) according to claim 1, wherein at least one guide track (424) for receiving tools (3) is provided in the tool magazine body (42); the bottom of the guide track (424) is provided with a support structure which serves to support a shank extension (32) of the tool (3) and to hold a cutting edge (33) of the tool (3) at a distance from the bottom of the guide track (424). [6] The tool changing device (200) according to claim 5, wherein the tool magazine assembly (4) further comprises an automatic feed mechanism, and the automatic feed mechanism comprises: a sliding element (44) which is slidably arranged in the guide track (424) and is located on a side of the tool (3) that is away from an output end (4241) of the guide track (424); and an elastic preloading element connected between the tool magazine body (42) and the sliding element (44) to exert a preload force on the sliding element (44) in the direction of the output end (4241). [7] The tool changing device (200) according to claim 1, wherein the lifting assembly (5) comprises: a tool lifting block (51) which is arranged to be vertically displaceable on the tool magazine body (42); wherein the tool lifting block (51) has a lifting section (511) which is located below a discharge end (4241) of a guide track (424) in the tool magazine body (42) and serves to engage with a shank extension (32) of the tool (3) during lifting and to lift the tool (3); and an elastic return element connected between the tool magazine body (42) and the tool lifting block (51) to return the tool lifting block (51) downwards to its starting position. [8] The tool changing device (200) according to claim 7, wherein the tool changing device (200) further comprises a detection device (7) attached to the drive part (6) to detect the state of movement of a movable part of the drive part (6) or of the tool lifting block (51) and, based on this state of movement, to output a signal indicating whether the tool magazine assembly (4) carries a tool (3) or not. [9] The tool changing device (200) according to claim 8, wherein the detection device (7) comprises a sensor module (71), and a detection port (711) of the sensor module (71) is arranged at the upper end of the stroke of the movable part of the drive part (6); when the tool lifting block (51) carries a tool (3), the movable part can move to the upper end of the stroke and cause the sensor module (71) to output a first signal; when the tool magazine assembly (4) is in an empty state, a sliding element (44) of the tool magazine assembly (4) is driven beyond the lifting assembly (5), and the movable part and the lifting assembly (5) are prevented by the base of the sliding element (44) from reaching the upper end of the stroke, whereupon the sensor module (71) outputs a second signal different from the first signal. [10] A cutting machine (100), comprising: a work platform (1); a slide tool holder (2) which is movably arranged above the work platform (1); wherein the slide tool holder (2) is equipped with a magnetic holding element (22) for suction of tools (3); a tool changing device (200) according to one of claims 1-9, wherein the tool magazine assembly (4) and the receiving / storage component (9) of the tool changing device (200) are arranged on the work platform (1); a control system that is electrically connected to the slide tool holder (2), the drive part (6), and a drive device (82) of a gripper assembly (8) of the tool changing device (200) to control the coordinated action of the individual components to perform an automatic tool picking and / or automatic tool dropping operation.

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