Tool changing device for numerical control carving machine

Abstract

The utility model relates to a tool changing device for a numerical control engraving machine. The tool changing device comprises a tool rest, a tool rest cover and a plurality of tool changing tool clamps. The tool rest is composed of a fixed base, a movable plate, a tool clamp fixing plate and an air cylinder. And matched guide rails are arranged on two sides of the bottom surface of the movable plate and are connected with the fixed seat in a sliding manner. The tool changing tool clamp is arranged at the front end of the tool clamp fixing plate, and the rear end is fixedly connected with the movable plate. A telescopic shaft of the air cylinder is connected with the movable plate and / or the tool holder fixing plate to drive the tool changing tool holder to stretch out and draw back. The knife holder cover is provided with a knife-changing knife holder extending opening, and a protective door is connected to the knife holder cover through a hinge and controlled by a protective door control cylinder to be opened and closed. The device can efficiently and safely change tools, improves the production efficiency and the machining quality, and is high in market application value.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tool changing device for numerical control engraver belongs to numerical control engraver tool changing design technical field. BACKGROUND

[0002] Numerical control engraver can carry out relief, flat carving, openwork carving to wooden door, furniture, metal, acrylic etc., and has fast engraving speed and high precision, and the material is engraved through the free movement of milling cutter. In the use process of numerical control engraver, tool changing is a very important link, and the common tool changing is to pause the numerical control engraver and then manually change the tool, which is time-consuming and laborious. Therefore, people generally fix several tool changing holders in the specified position of numerical control engraver in advance, then place engraving tools on each tool changing holder, and when the numerical control engraver needs to change the tool, the program control is used to remove the old engraving tool on the engraving head of numerical control engraver, and then the engraving head is moved to any tool changing holder to change the tool. This process is controlled by the program, is convenient and fast, reduces the participation of manual work, and saves time and effort. However, the several tool changing holders are exposed in this way, which is unsafe. Therefore, people think of adding a protective cover to the tool changing holder, but the tool changing device with the protective cover has a relatively complex structure. SUMMARY

[0003] The utility model aims at overcoming the defects of prior art, and provides a tool changing device for numerical control engraver which is reasonable in structure, simple to use and convenient to use.

[0004] In order to achieve the above-mentioned utility model purposes, the utility model adopts the following technical scheme: a tool changing device for numerical control engraver, comprising a tool holder and a tool holder cover covering the tool holder, a plurality of tool changing holders are installed on the tool holder, and an engraving tool is placed on the tool changing holder; characterized by:

[0005] The tool holder comprises a fixed seat, a moving plate, a tool holder fixing plate and a cylinder; wherein:

[0006] Both sides of the fixed seat are provided with guide rail sliding blocks, and both sides of the bottom surface of the moving plate facing the fixed seat are provided with guide rails matched with the guide rail sliding blocks; the guide rail sliding block on one side of the fixed seat is slidably connected with the guide rail on one side of the moving plate, and the guide rail sliding block on the other side of the fixed seat is slidably connected with the guide rail on the other side of the moving plate;

[0007] The plurality of tool changing holders are installed on the front end of the tool holder fixing plate, and the rear end of the tool holder fixing plate is fixedly connected with the moving plate;

[0008] The top end of the telescopic shaft of the cylinder is fixedly connected with the moving plate and / or the tool holder fixing plate, and the telescopic shaft of the cylinder drives the plurality of tool changing holders on the tool holder fixing plate to extend or retract;

[0009] The tool holder cover is placed over the tool holder, and a tool changer clip extension is opened on one side of the tool holder cover. A protective door is hinged to the tool changer clip extension. A protective door control cylinder is also provided. The protective door control cylinder is hinged to a fixed base. The front end of the telescopic shaft of the protective door control cylinder is connected to the protective door. The extension and retraction of the telescopic shaft of the protective door control cylinder drives the opening and closing of the protective door.

[0010] The top of the tool holder cover has a maintenance opening, and a door panel is installed on the maintenance opening.

[0011] The door panel is equipped with at least one door handle.

[0012] The bottom of the fixed base is fixedly connected to the CNC engraving machine, and the bottom of the tool holder cover is fixedly connected to the CNC engraving machine.

[0013] The number of control cylinders for the protective door is 2.

[0014] A cylinder seat is fixedly mounted on the fixed base, and the protective door control cylinder is hinged to the cylinder seat of the fixed base.

[0015] Structurally, this utility model mainly includes a tool holder and a tool holder cover. The tool holder includes a fixed base, a movable plate, a tool clamp fixing plate, and a cylinder. The following is a further analysis of each component:

[0016] 1. The fixed base serves as the basic support structure for the entire tool holder, with guide rails and sliders mounted on both sides. The stability of the fixed base directly affects the reliability of the entire tool changing device. By being fixedly connected to the CNC engraving machine, it provides a stable mounting foundation for the tool holder.

[0017] 2. The movable plate matches the guide rail slider on the fixed base, achieving a sliding connection through the guide rail. The movable plate's movement function is crucial for the tool changer to extend and retract the tool holder; its sliding accuracy and smoothness are essential for the accuracy and efficiency of tool changing.

[0018] 3. Several tool changer clips are installed at the front end of the tool holder fixing plate, and the rear end is fixedly connected to the moving plate. The function of the tool holder fixing plate is to fix the tool changer clips and link them with the movement of the moving plate, so that the tool changer clips can move together with the moving plate to achieve the action of extending or retracting.

[0019] 4. A cylinder, the top of which is fixedly connected to the moving plate and / or the tool holder fixing plate. The extension and retraction of the cylinder is the power source for driving the movement of the tool holder fixing plate and the tool changer. By precisely controlling the extension and retraction of the cylinder, the accurate extension and retraction of the tool changer can be achieved.

[0020] In this invention, the tool holder cover is placed over the tool holder to protect the internal structure of the tool holder and the tool changing clamp, and to prevent external factors from interfering with or damaging the tool changing device.

[0021] A tool changer extender is located on one side of the tool holder cover, serving as the passage for the tool changer to enter and exit the cover. A protective door is hinged to the extender, and the front end of the telescopic shaft of the protective door control cylinder is connected to the door. The door is opened and closed by controlling the extension and retraction of the cylinder. The protective door further enhances the safety of the tool changing device, preventing the tool changer from being exposed when not in a tool changing state.

[0022] A maintenance opening is provided at the top of the tool holder cover, and a door panel is installed on the door panel, which has at least one door handle. The design of the maintenance opening and door panel facilitates the operator's maintenance and inspection of the inside of the tool holder, while the door panel handle makes it easy for the operator to open and close the door panel.

[0023] In this invention, the bottom of the fixed base is fixedly connected to the CNC engraving machine, and the bottom of the tool holder cover is also fixedly connected to the CNC engraving machine. This fixed connection method securely mounts the tool changing device on the CNC engraving machine, ensuring its relative position to the engraving machine remains stable during tool changing, and preventing displacement of the tool changing device due to vibration or external force, thus affecting the accuracy of tool changing.

[0024] This invention utilizes a tool holder cover to enclose the tool holder and its tool changer clips, forming a relatively independent and compact integrated structure. This integrated design not only makes the tool changing device more aesthetically pleasing but also reduces the space occupied, facilitating installation and layout within the limited space of a CNC engraving machine. Furthermore, the precise extension and retraction of the tool changer clips are achieved through the sliding connection between the guide rail slider and the moving plate, and the cylinder's drive of the moving plate and the tool changer clip fixing plate. The structure of the guide rail slider ensures the straightness and stability of the moving plate during movement, reducing motion errors and ensuring that the tool changer clips accurately reach the designated position to complete the tool changing operation. The tool holder cover itself provides some protection for the tool changer clips, while the protective door further enhances safety. In non-tool changing mode, the protective door is closed, completely enclosing the tool changer clips within the tool holder cover, avoiding potential safety hazards from exposed tools. During tool changing, the protective door opens, the tool changer clips extend for the tool changing operation, and the protective door closes again after the tool changing is completed, achieving dynamic safety protection during the tool changing process. The maintenance opening and door panel on the top of the tool holder cover, along with the door panel handle, fully consider the maintenance needs of the tool changing device. Operators can easily inspect, clean, lubricate, or replace components such as the tool holder, tool changer clip, and cylinder inside the tool holder cover by opening the door panel, improving the maintainability of the tool changing device and reducing maintenance costs and downtime.

[0025] When a tool change is required using this utility model:

[0026] S1. First, the telescopic shaft of the protective door control cylinder extends to open the protective door. At the same time, the telescopic shaft of the tool changing cylinder extends, pushing the moving plate and the tool holder fixing plate forward, so that the tool changing clip extends out of the extension port inside the tool holder cover and reaches the tool changing position.

[0027] S2. The CNC engraving machine's engraving head moves above the extended tool changer and completes the removal of the old tool and installation of the new engraving tool according to the preset program.

[0028] S3. After the tool change is completed, the telescopic shaft of the tool change cylinder retracts, causing the tool changer to retract into the tool holder cover.

[0029] S4. The telescopic shaft of the protective door control cylinder retracts, closing the protective door and restoring the tool changing device to its initial state, awaiting the next tool changing command.

[0030] The process of steps S1-S4 can be achieved by programming the controller in the CNC engraving machine.

[0031] This tool changing device for CNC engraving machines enables efficient and safe tool changing operations, improving the production efficiency and processing quality of CNC engraving machines, and has great market application and promotion value. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0034] Figure 3 This is a schematic diagram of the tool holder part in this utility model;

[0035] Figure 4 This is a schematic diagram of the tool holder portion from another direction in this utility model;

[0036] Figure 5 This is a schematic diagram of the structure of this utility model after removing the door panel;

[0037] Figure 6 This is a schematic diagram of the structure of this utility model after the engraving knife is mounted on the tool changer;

[0038] In the diagram: 1. Tool holder, 2. Tool holder cover, 3. Tool changer clip, 4. Fixed base, 5. Moving plate, 6. Tool clip fixing plate, 7. Cylinder, 8. Guide rail slider, 9. Door panel handle, 10. Guide rail, 11. Tool changer clip extension, 12. Protective door, 13. Protective door control cylinder, 14. Cylinder base, 15. Door panel, 16. Engraving knife. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and descriptions.

[0040] A tool changing device for a CNC engraving machine includes a tool holder 1 and a tool holder cover 2 covering the tool holder 1. Several tool changing clips 3 are installed on the tool holder 1, and engraving tools 16 are placed on the tool changing clips 3. The tool holder 1 includes a fixed base 4, a movable plate 5, a tool clip fixing plate 6, and a cylinder 7. Guide rail sliders 8 are installed on both sides of the fixed base 4. Guide rails 10 matching the guide rail sliders 8 are installed on both sides of the bottom surface of the movable plate 5 facing the fixed base 4. The guide rail slider 8 on one side of the fixed base 4 is slidably connected to the guide rail 10 on one side of the movable plate 5, and the guide rail slider 8 on the other side of the fixed base 4 is slidably connected to the guide rail 10 on the other side of the movable plate 5.

[0041] Several tool changer clips 3 are installed on the front end of the tool clip fixing plate 6, and the rear end of the tool clip fixing plate 6 is fixedly connected to the moving plate 5; the top end of the telescopic shaft of the cylinder 7 is fixedly connected to the moving plate 5 and / or the tool clip fixing plate 6, and the extension and retraction of the telescopic shaft of the cylinder 7 causes several tool changer clips 3 on the tool clip fixing plate 6 to extend or retract.

[0042] The tool holder cover 2 is placed over the tool holder 1, and a tool changer clip extension 11 is opened on one side of the tool holder cover 2. A protective door 12 is hinged to the tool changer clip extension 11. A protective door control cylinder 13 is also provided. The protective door control cylinder 13 is hinged to the fixed base 4. The front end of the telescopic shaft of the protective door control cylinder 13 is connected to the protective door 12. The extension and retraction of the telescopic shaft of the protective door control cylinder 13 drives the protective door 12 to open and close.

[0043] Furthermore, a maintenance opening is provided at the top of the tool holder cover 2, and a door panel 15 is installed on the maintenance opening. At least one door panel handle 9 is installed on the door panel 15. There are two protective door control cylinders 13.

[0044] In use, the bottom of the fixed base 4 is fixedly connected to the CNC engraving machine, and the bottom of the tool holder cover 2 is fixedly connected to the CNC engraving machine.

[0045] Furthermore, cylinder 7 adopts a large-stroke square power component, controlled by a solenoid valve, and achieves linear and rotary motion through compressed air.

[0046] The tool holder cover 2 effectively protects the equipment, effectively prevents dust and chipping, prevents dust accumulation, and improves the stability of tool changing.

[0047] The door panel 15 on the tool holder cover 2 adopts a closed design, which reduces noise during equipment operation and serves as a dustproof function, improving the working environment. The door panel handle 9 facilitates quick and easy opening or closing of the door panel 13.

[0048] Furthermore, a cylinder seat 14 is fixedly installed on the fixed base 4, and the protective door control cylinder 13 is hinged to the cylinder seat 4 of the fixed base 4.

Claims

1. A tool changer for a numerical control engraver, comprising a tool holder (1) and a tool holder cover (2) covering the tool holder (1), the tool holder (1) being provided with a plurality of tool changer tool holders (3) on which engraving tools (16) are placed; characterized in that: the tool holder (1) comprises a fixed base (4), a moving plate (5), a tool holder fixing plate (6), and a cylinder (7); wherein: the fixed base (4) is provided with guide rail sliders (8) on both sides, and the moving plate (5) is provided with guide rails (10) matching the guide rail sliders (8) on the bottom surface facing the fixed base (4); the guide rail slider (8) on one side of the fixed base (4) is in sliding connection with the guide rail (10) on one side of the moving plate (5), and the guide rail slider (8) on the other side of the fixed base (4) is in sliding connection with the guide rail (10) on the other side of the moving plate (5); the plurality of tool changer tool holders (3) are installed at the front end of the tool holder fixing plate (6), and the rear end of the tool holder fixing plate (6) is fixedly connected with the moving plate (5); the top end of the extension shaft of the cylinder (7) is fixedly connected with the moving plate (5) and / or the tool holder fixing plate (6), and the extension and retraction of the extension shaft of the cylinder (7) drives the plurality of tool changer tool holders (3) on the tool holder fixing plate (6) to extend or retract; the tool holder cover (2) covers the tool holder (1), and the tool holder cover (2) is provided with a tool changer tool holder extension opening (11) on one side, and a protection door (12) is hingedly connected to the tool changer tool holder extension opening (11); a protection door control cylinder (13) is further provided, the protection door control cylinder (13) is hingedly connected to the fixed base (4), the front end of the extension shaft of the protection door control cylinder (13) is connected with the protection door (12), and the extension and retraction of the extension shaft of the protection door control cylinder (13) drives the protection door (12) to open and close. A maintenance opening is provided on the top of the tool holder cover (2), and a door plate (15) is installed on the maintenance opening. At least one door plate handle (9) is installed on the door plate (15). The bottom of the fixed base (4) is fixedly connected with the numerical control engraver, and the bottom end of the tool holder cover (2) is fixedly connected with the numerical control engraver. The number of protection door control cylinders (13) is two. A cylinder seat (14) is fixedly installed on the fixed base (4), and the protection door control cylinder (13) is hingedly connected to the cylinder seat (14) of the fixed base (4).

2. The tool changer for a numerically controlled engraver according to claim 1, wherein: ​ 3. The tool changer for a numerically controlled engraver according to claim 2, wherein: ​ 4. The tool changer for a numerically controlled engraver according to claim 1, wherein: ​ 5. The tool changer for a numerically controlled engraver according to claim 1, wherein: ​ 6. The tool changer for a numerically controlled engraver according to claim 1, wherein: ​

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