A CNC engraving machine with a tool magazine

Abstract

This utility model discloses a CNC engraving machine with a tool magazine, including a base and a gantry frame mounted on the top surface of the base. The CNC engraving machine also includes a spindle, a first Y-axis drive mechanism, a worktable, a second Y-axis drive mechanism, a tool holder, a front protective plate, and a top cover structure. The spindle is mounted on the top crossbeam of the gantry frame. The worktable is movably mounted on the top surface of the base via the first Y-axis drive mechanism. The tool holder, opposite the worktable, is movably mounted on the top surface of the base via the second Y-axis drive mechanism. The front protective plate is connected to the front end of the tool holder. The top cover structure is mounted on the gantry frame and is used to cooperate with the front protective plate to cover the outer periphery of the tool holder. This utility model, through the top cover structure and the front protective plate, encloses the tool holder, preventing tool chips and waste from splashing onto the tool holder, avoiding contamination, and facilitating cleaning and maintenance. The tool holder is surrounded by the top cover structure and the front protective plate, resulting in a compact overall structure and an aesthetically pleasing appearance.

Description

Technical Field

[0001] This utility model relates to the field of engraving machine technology, specifically a CNC engraving machine with a tool magazine. Background Technology

[0002] A CNC engraving machine is a type of CNC machine tool capable of non-contact cutting and drilling of metal, non-metal sheets, and pipes. It is particularly suitable for laser cutting of materials such as aluminum alloys, glass, plastics, and acrylic sheets. During engraving, a CNC engraving machine requires tool changes to accommodate different patterns. Current CNC engraving machines typically use a tool magazine to store and change tools. To facilitate tool changes, the tool magazine is often exposed, which not only results in an unsightly appearance but also allows cutting chips and waste materials to easily splatter onto the tool magazine's disc, causing contamination. Summary of the Invention

[0003] The purpose of this invention is to provide a CNC engraving machine with a tool magazine, which can prevent tool chips and waste from splashing into the tool magazine while improving tool changing efficiency, thereby solving the problem mentioned in the background art that tool chips and waste generated by existing engraving machines are also easily splashed into the tool magazine's tool head.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A CNC engraving machine with a tool magazine includes a base and a gantry frame mounted on the top surface of the base. The CNC engraving machine also includes a spindle, a first Y-axis drive mechanism, a worktable, a second Y-axis drive mechanism, a tool holder, a front protective plate, and a top cover structure. The spindle is mounted on the top crossbeam of the gantry frame. The worktable is movably mounted on the top surface of the base via the first Y-axis drive mechanism. The tool holder, opposite to the worktable, is movably mounted on the top surface of the base via the second Y-axis drive mechanism. The front protective plate is connected to the front end of the tool holder. The top cover structure is mounted on the gantry frame and is used to cooperate with the front protective plate to cover the outer periphery of the tool holder.

[0005] Preferably, the tool holder includes a base frame, a support plate, and a plurality of tool mounting components. The support plate is connected to the top of the base frame and forms an accommodating cavity with the base frame. The plurality of tool mounting components are equally spaced on the support plate, and the front protective plate is connected to the support plate and one side of the plurality of tool mounting components.

[0006] Preferably, the tool mounting assembly includes a support plate, a fixed base, and a tool holder. The two support plates are upright and opposite to each other on the support plate. The fixed base is connected to the top of the two support plates. The tool holder is detachably mounted on the fixed base. The tool holder has a plurality of tool storage holes arranged in a rectangular array. The fixed base has through holes corresponding to the plurality of tool storage holes.

[0007] Preferably, the dome structure includes a hanging plate and a storage box connected to the bottom of the hanging plate. The bottom and lower front surfaces of the storage box are open to allow the knife holder to enter the storage box. The front protective plate blocks the lower opening of the front surface of the storage box to close the front surface of the storage box.

[0008] Preferably, a baffle is provided on the inner side of the lower opening of the front face of the storage box, the top of the baffle is connected to the front face of the storage box through an inclined surface, and the top of the front protective plate is higher than the bottom of the baffle.

[0009] Preferably, the top wall of the storage box is provided with an L-shaped bracket, and several tool sensors are arranged in a straight line along the upper edge of the L-shaped bracket.

[0010] Preferably, the rear end face of the storage box has several windows, and the top cover structure includes sealing plates that close the windows.

[0011] Preferably, the second Y-axis drive mechanism includes a guide rail, a motor, a screw, and a nut seat. The two guide rails are arranged parallel to each other on the top surface of the base. The tool holder is movably arranged on the two guide rails. The motor is horizontally arranged on the top surface of the base. The screw is rotatably arranged on the top surface of the base. One end of the output shaft of the motor is connected to one end of the screw. The nut seat is threadedly connected to the screw. The top end of the nut seat is connected to the bottom of the tool holder.

[0012] Preferably, it includes an X-axis drive mechanism, a first slide, a Z-axis drive mechanism, and a second slide. The first slide is movably mounted on the crossbeam of the gantry via the X-axis drive mechanism, the second slide is movably mounted on the first slide via the Z-axis drive mechanism, and the spindle is mounted on the second slide.

[0013] Preferably, the second slide is provided with a protective cover that covers the outer periphery of the spindle.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: During tool changing, the second Y-axis drive mechanism can quickly move the tool holder to below the spindle for tool changing without opening the top cover structure, resulting in high automatic tool changing efficiency; after tool changing, the second Y-axis drive mechanism drives the tool holder back to below the top cover structure, and the top cover structure, together with the front protective plate, seals the tool holder. In this way, the tool chips and waste generated when the spindle is machining the workpiece cannot splash onto the tool holder, avoiding contamination of the tool holder and facilitating cleaning and maintenance; in addition, when the tool holder is not in use, it is surrounded by the top cover structure and the front protective plate, resulting in a compact overall structure and an aesthetically pleasing appearance. Attached Figure Description

[0015] Figure 1 This is a perspective view of the CNC engraving machine with tool magazine of this utility model; Figure 2 This is a perspective view of the first Y-axis drive mechanism and the second Y-axis drive mechanism of this utility model; Figure 3 This is a perspective view of the tool holder and the top cover structure of this utility model; Figure 4 This is a perspective view of the tool holder and front protective plate of this utility model; Figure 5 This is a perspective view of the dome structure of this utility model; Figure 6 This is a sectional view of the tool holder and the top cover structure of this utility model; Figure 7 This is a perspective view of the X-axis drive mechanism and the Z-axis drive mechanism of this utility model.

[0016] In the diagram: 1. Spindle; 2. First Y-axis drive mechanism; 3. Worktable; 4. Second Y-axis drive mechanism; 41. Guide rail; 42. Motor; 43. Screw; 44. Nut seat; 5. Tool holder; 51. Base frame; 52. Support plate; 53. Tool mounting assembly; 531. Support plate; 532. Fixed seat; 533. Tool holder; 54. Tool setter; 6. Front protective plate; 7. Top structure; 71. Hanging plate; 72. Storage box; 721. Window; 73. Baffle; 74. Inclined surface; 75. L-shaped bracket; 76. Tool sensor; 77. Sealing plate; 8. X-axis drive mechanism; 9. First slide; 10. Z-axis drive mechanism; 11. Second slide; 12. Base; 13. Gantry. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-7 A CNC engraving machine with a tool magazine includes a base 12 and a gantry frame 13 mounted on the top surface of the base 12. The CNC engraving machine also includes a spindle 1, a first Y-axis drive mechanism 2, a worktable 3, a second Y-axis drive mechanism 4, a tool holder 5, a front protective plate 6, and a top cover structure 7. The spindle 1 is mounted on the top crossbeam of the gantry frame 13. The worktable 3 is movably mounted on the top surface of the base 12 via the first Y-axis drive mechanism 2. The tool holder 5, opposite the worktable 3, is movably mounted on the top surface of the base 12 via the second Y-axis drive mechanism 4. The front protective plate 6 is connected to the front end of the tool holder 5. The top cover structure 7 is mounted on the gantry frame 13 and is used to cooperate with the front protective plate 6 to cover the outer periphery of the tool holder 5. The tool holder 5 holds several tools for replacement.

[0019] During tool changing, the second Y-axis drive mechanism 4 can quickly move the tool holder 5 to below the spindle 1 for tool changing without opening the top cover structure 7, resulting in high efficiency of automatic tool changing. After tool changing, the second Y-axis drive mechanism 4 drives the tool holder 5 back to below the top cover structure 7. The top cover structure 7, together with the front protective plate 6, encloses the tool holder 5. In this way, the tool chips and waste generated when the spindle 1 processes the workpiece cannot splash onto the tool holder 5, avoiding contamination and facilitating cleaning and maintenance. In addition, when the tool holder 5 is not in use, it is surrounded by the top cover structure 7 and the front protective plate 6, resulting in a compact overall structure and an aesthetically pleasing appearance.

[0020] Please see Figure 2 The second Y-axis drive mechanism 4 includes a guide rail 41, a motor 42, a screw 43, and a nut seat 44. The two guide rails 41 are arranged parallel to each other on the top surface of the base 12. The tool holder 5 is movably mounted on the two guide rails 41. The motor 42 is horizontally mounted on the top surface of the base 12, and the screw 43 is rotatably mounted on the top surface of the base 12. One end of the output shaft of the motor 42 is connected to one end of the screw 43. The nut seat 44 is threadedly connected to the screw 43, and its top end is connected to the bottom of the tool holder 5. During tool changing, the motor 42 drives the screw 43 to rotate. Under the action of the screw 43, the nut seat 44 drives the tool holder 5 to move axially along the screw 43 to a position below the spindle 1 to cooperate with the spindle 1 in tool changing. The structure of the first Y-axis drive mechanism 2 is the same as that of the second Y-axis drive mechanism 4, and its structural principle will not be described in detail here. In this embodiment, the tool holder 5 and the worktable 3 share the guide rail 41, which can reduce equipment costs and facilitate maintenance.

[0021] Please see Figure 3-4 The tool holder 5 includes a base frame 51, a support plate 52, and several tool mounting components 53. The base frame 51 is connected to a nut seat 44 via a mounting plate. The support plate 52 is connected to the top of the base frame 51 and forms an accommodating cavity with the base frame 51. Several tool mounting components 53 are equally spaced on the support plate 52. The front protective plate 6 is connected to the support plate 52 and one side of several tool mounting components 53.

[0022] The tool mounting assembly 53 includes a support plate 531, a fixing base 532, and a tool holder 533. The two support plates 531 are upright and oppositely mounted on the support plate 52. The fixing base 532 is connected to the top of the two support plates 531. The tool holder 533 is detachably mounted on the fixing base 532, and the tool holder 533 has a plurality of tool storage holes arranged in a rectangular array. The fixing base 532 has through holes corresponding to the tool storage holes, and tools are placed in the tool storage holes and through holes respectively. A tool setter 54 is provided on the top surface of the support plate 52, and the fixing base 532 has a clearance groove for the tool setter 54 to pass upwards.

[0023] The mounting base 532 and the tool holder 533 each have corresponding bolt holes. During installation, bolts are passed through these holes to connect the mounting base 532 and the tool holder 533 together. When repairing or replacing the tool holder 533, simply loosening and tightening the bolts allows for replacement with similar or different tool holders 533, providing good versatility. Please refer to [link / reference]. Figure 4 In this embodiment, there are three tool holders 533, and the fixing seats 532 of adjacent tool mounting assemblies 53 are connected in sequence.

[0024] Please see Figure 5-6 The dome structure 7 includes a hanging plate 71 and a storage box 72 connected to the bottom of the hanging plate 71. The bottom and lower part of the front face of the storage box 72 are open to allow the tool holder 5 to enter the storage box 72. The front protective plate 6 blocks the lower opening of the front face of the storage box 72 to seal the front face of the storage box 72. A baffle 73 is provided inside the lower opening of the front face of the storage box 72. The top of the baffle 73 is connected to the front face of the storage box 72 through an inclined surface 74. The top of the front protective plate 6 is higher than the bottom of the baffle 73, so that the cutting waste is blocked by the baffle 73 and the front protective plate 6, preventing the cutting waste from splashing straight into the storage box 72 due to the gap between the front protective plate 6 and the opening of the front face of the storage box 72, thereby improving the splash protection capability of the storage box 72.

[0025] Among them, the hanging plate 71 is L-shaped, the top of the hanging plate 71 is fixed on the crossbeam of the gantry frame 13, and the bottom of the hanging plate 71 is connected to the top surface of the storage box 72.

[0026] Please see Figure 5-6 The top wall of the storage box 72 is equipped with an L-shaped bracket 75, and several tool sensors 76 are arranged in a straight line along the L-shaped bracket 75. When the tool holder 533 passes under the tool sensor 76 under the drive of the second Y-axis drive mechanism 4, the tool sensor 76 can detect the positions of all tool storage holes along a line of the tool holder 533 to identify whether there are tools at these positions of the tool holder 533. One tool sensor 76 corresponds to several tool storage holes on the tool holder 533, thereby reducing the number of tool sensors 76 used.

[0027] Please see Figure 3 as well as Figure 5 The storage box 72 has several windows 721 corresponding to the tool holders 533 on its rear end face. The top cover structure 7 includes a sealing plate 77 that closes the windows 721. In this embodiment, the sealing plate 77 is bolted to the rear end face of the storage box 72. The sealing plate 77 and the windows 721 are provided to facilitate opening the storage box 72 for maintenance of the tool holders 533 and other structures inside the storage box 72. The lower part of the rear end face of the storage box 72 has a notch for the tool setting device 54 to pass through.

[0028] Please see Figure 1 as well as Figure 7 The CNC engraving machine includes an X-axis drive mechanism 8, a first slide 9, a Z-axis drive mechanism 10, and a second slide 11. The first slide 9 is movably mounted on the crossbeam of the gantry frame 13 via the X-axis drive mechanism 8. The second slide 11 is movably mounted on the first slide 9 via the Z-axis drive mechanism 10. The spindle 1 is mounted on the second slide 11, and a protective cover is provided on the second slide 11 to protect the spindle 1 from dust and splashes. In this embodiment, three spindles 1 are provided. The X-axis drive mechanism 8, the Z-axis drive mechanism 10, and the second Y-axis drive mechanism 4 have the same structure, and their structural principles will not be described in detail here. The second Y-axis drive mechanism 4, the X-axis drive mechanism 8, and the Z-axis drive mechanism 10 can also be linear motors, cylinders, or hydraulic cylinders, etc., capable of linear drive actions.

[0029] During machining, the X-axis drive mechanism 8 drives the first slide 9, the second slide 11, and the spindle 1 to move horizontally so that the spindle 1 is aligned with the workpiece on the worktable 3. Subsequently, the Z-axis drive mechanism 10 drives the second slide 11 and the spindle 1 to descend, completing the machining of the workpiece. During tool changing, when the tool holder 5 moves to a position below the spindle 1 under the drive of the second Y-axis drive mechanism 4, the spindle 1 descends and releases the tool on it, placing it in the empty tool position of the tool holder 533, that is, placing it in the empty tool storage hole of the tool holder 533. Then, the spindle 1 ascends and moves horizontally to a position above the tool holder 533 of the tool to be replaced, and then descends again to mate with and clamp the target tool, thereby achieving the purpose of automatic tool changing.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC engraving machine with a tool magazine, comprising a base (12) and a gantry frame (13) disposed on the top surface of the base (12), characterized in that: The CNC engraving machine also includes a spindle (1), a first Y-axis drive mechanism (2), a worktable (3), a second Y-axis drive mechanism (4), a tool holder (5), a front protective plate (6), and a top cover structure (7). The spindle (1) is mounted on the top beam of the gantry frame (13). The worktable (3) is movably mounted on the top surface of the base (12) via the first Y-axis drive mechanism (2). The tool holder (5), which is opposite to the worktable (3), is movably mounted on the top surface of the base (12) via the second Y-axis drive mechanism (4). The front protective plate (6) is connected to the front end of the tool holder (5). The top cover structure (7) is mounted on the gantry frame (13) and is used to cooperate with the front protective plate (6) to cover the outer periphery of the tool holder (5).

2. The CNC engraving machine with a tool magazine according to claim 1, characterized in that: The tool holder (5) includes a base frame (51), a support plate (52), and several tool mounting components (53). The support plate (52) is connected to the top of the base frame (51) and forms a receiving cavity with the base frame (51). Several tool mounting components (53) are evenly spaced on the support plate (52). The front protective plate (6) is connected to the support plate (52) and one side of several tool mounting components (53).

3. The CNC engraving machine with a tool magazine according to claim 2, characterized in that: The tool mounting assembly (53) includes a support plate (531), a fixing seat (532), and a tool holder (533). The two support plates (531) are upright and opposite to each other on the support plate (52). The fixing seat (532) is connected to the top of the two support plates (531). The tool holder (533) is detachably mounted on the fixing seat (532). The tool holder (533) has a plurality of tool storage holes arranged in a rectangular array. The fixing seat (532) has through holes corresponding to the plurality of tool storage holes.

4. The CNC engraving machine with a tool magazine according to claim 1, characterized in that: The dome structure (7) includes a hanging plate (71) and a storage box (72) connected to the bottom of the hanging plate (71). The bottom and lower front surfaces of the storage box (72) are open to allow the knife holder (5) to enter the storage box (72). The front protective plate (6) blocks the lower opening of the front surface of the storage box (72) to seal the front surface of the storage box (72).

5. The CNC engraving machine with a tool magazine according to claim 4, characterized in that: A baffle (73) is provided on the inner side of the lower opening of the front face of the storage box (72). The top of the baffle (73) is connected to the front face of the storage box (72) through an inclined surface (74). The top of the front protective plate (6) is higher than the bottom of the baffle (73).

6. The CNC engraving machine with a tool magazine according to claim 4, characterized in that: The top wall of the storage box (72) is provided with an L-shaped bracket (75), and several tool sensors (76) are arranged in a straight line along the upper edge of the L-shaped bracket (75).

7. The CNC engraving machine with a tool magazine according to any one of claims 4-6, characterized in that: The rear end face of the storage box (72) has several windows (721), and the top structure (7) includes a sealing plate (77) that is closed at the windows (721).

8. The CNC engraving machine with a tool magazine according to claim 1, characterized in that: The second Y-axis drive mechanism (4) includes a guide rail (41), a motor (42), a screw (43), and a nut seat (44). The two guide rails (41) are arranged parallel to each other on the top surface of the base (12). The tool holder (5) is movably arranged on the two guide rails (41). The motor (42) is horizontally arranged on the top surface of the base (12). The screw (43) is rotatably arranged on the top surface of the base (12). One end of the output shaft of the motor (42) is connected to one end of the screw (43). The nut seat (44) is threadedly connected to the screw (43). The top end of the nut seat (44) is connected to the bottom of the tool holder (5).

9. The CNC engraving machine with a tool magazine according to claim 1, characterized in that: It includes an X-axis drive mechanism (8), a first slide (9), a Z-axis drive mechanism (10), and a second slide (11). The first slide (9) is movably mounted on the crossbeam of the gantry (13) via the X-axis drive mechanism (8), and the second slide (11) is movably mounted on the first slide (9) via the Z-axis drive mechanism (10). The main shaft (1) is mounted on the second slide (11).

10. The CNC engraving machine with a tool magazine according to claim 9, characterized in that: The second slide (11) is provided with a protective cover that covers the outer periphery of the main shaft (1).

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