Tool changing device of numerical control carving machine

Abstract

The utility model provides a numerical control carving machine tool changing device, which belongs to the field of numerical control carving machine tool changing, and comprises a carving machine, a three-dimensional moving mechanism arranged in the carving machine, a tool changing mechanism arranged on the inner side wall of the carving machine, and a tool changing mechanism arranged on the inner side wall of the carving machine, the tool changing mechanism can change tools. The cleaning mechanism is arranged on the tool changing mechanism, and the cleaning mechanism can clean the replaced carving knives, the carving knives can be conveniently replaced through the arrangement of the tool changing mechanism, the replaced carving knives can be cleaned under the cooperation of the cleaning mechanism, and the situation that chippings pollute the tool magazine is avoided; and the subsequent machining precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of tool changing for CNC engraving machines, and more specifically, to a tool changing device for CNC engraving machines. Background Technology

[0002] CNC engraving machines can perform relief carving, flat carving, and hollow carving on aluminum alloy, copper, bakelite, wood, jade, glass, plastic, and acrylic materials. They are fast and have high precision. CNC engraving machines include woodworking engraving machines, stone engraving machines, advertising engraving machines, glass engraving machines, laser engraving machines, plasma engraving machines, and laser cutting machines.

[0003] To improve engraving efficiency, engraving machines are equipped with tool magazines for easy tool changing. However, existing tool changing devices do not clean the removed tools, and residual debris on the tool surface can easily contaminate the tool magazine, thus affecting the accuracy of subsequent processing. How to invent a tool changing device for CNC engraving machines to improve these problems has become an urgent issue for those skilled in the art. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a tool changing device for CNC engraving machines. It aims to improve the current situation where, in order to improve engraving efficiency, engraving machines are equipped with tool magazines for easy tool changing. However, existing tool changing devices do not have the function of cleaning the removed tools. The residual debris on the tool surface can easily contaminate the tool magazine, thereby affecting the accuracy of subsequent processing.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a tool changing device for a CNC engraving machine, including an engraving machine and a three-dimensional moving mechanism disposed within the engraving machine. One end of the three-dimensional moving mechanism is provided with a replaceable engraving tool. The device also includes: a tool changing mechanism disposed on the inner wall of the engraving machine, which is capable of changing tools; and a cleaning mechanism disposed on the tool changing mechanism, which is capable of cleaning the replaced engraving tool.

[0007] Preferably, the tool changing mechanism includes a tool changing box provided on the inner side wall of the engraving machine, a tool holder provided in the tool changing box, multiple sets of tool slots opened on the side wall of the tool holder, a motor provided on the top of the tool changing box, and the output end of the motor being connected to the top of the tool holder.

[0008] Preferably, the tool changer box has a tool change port on its side wall, and the tool changer box has a sealing door mechanism that cooperates with the tool change port on its side wall.

[0009] Preferably, the cleaning mechanism includes an electric telescopic rod at the bottom of the tool changer box, a lifting plate at one end of the electric telescopic rod, a connecting pipe extending through the top of the lifting plate, a dust extraction pipe at one end of the connecting pipe, a dust extraction pipe connected to an external chip pump at one end, a rotary joint at the other end of the connecting pipe, a dust extraction pipe movably extending through the top of the tool changer box, a dust extraction hood at the other end of the dust extraction pipe, a driven gear fitted onto the outer wall of the dust extraction pipe, a drive motor at the top of the lifting plate, and a drive gear meshing with the driven gear at the output end of the drive motor.

[0010] Preferably, the flaking cover is funnel-shaped, and the inner wall of the flaking cover is provided with cleaning bristles.

[0011] Preferably, the top of the lifting plate has a through hole, and a bearing is sleeved on the outer wall of the connecting pipe, with the bearing cooperating with the inner wall of the through hole.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model, by setting up a tool changing mechanism, can facilitate the replacement of carving tools. With the cooperation of the cleaning mechanism, the replaced carving tools can be cleaned to avoid debris contaminating the tool magazine and improve the accuracy of subsequent processing.

[0014] 2. This utility model has cleaning bristles on the inner wall of the chip extraction hood. The electric telescopic rod can drive the chip extraction hood to rise and fall, so that the knife is located inside the chip extraction hood. With the cooperation of the drive gear, driven gear and motor, the dust suction pipe and chip extraction hood can be rotated, so that the chip extraction hood can sweep away stubborn chips on the surface of the knife. At the same time, the external chip suction pump and dust suction pipe extract and clean the chips. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the tool changing mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the cleaning mechanism of this utility model.

[0019] In the diagram: 1. Engraving machine; 2. Tool changing mechanism; 200. Tool changing box; 201. Tool holder; 202. Tool groove; 203. Motor; 204. Tool changing edge; 205. Sealing door mechanism; 3. Three-dimensional moving mechanism; 4. Engraving knife; 5. Cleaning mechanism; 500. Chip extraction hood; 501. Cleaning bristles; 502. Dust extraction pipe; 503. Driven gear; 504. Drive gear; 505. Drive motor; 506. Rotary joint; 507. Connecting pipe; 508. Dust extraction pipe; 509. Electric telescopic rod; 510. Lifting plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Example, refer to Figures 1-3 A tool changing device for a CNC engraving machine includes an engraving machine 1 and a three-dimensional moving mechanism 3 disposed within the engraving machine 1. The three-dimensional moving mechanism 3 typically employs a gantry or cantilever structure for its horizontal and vertical motion modules, achieving high-speed positioning in a plane through high-precision linear guides and ball screws. The vertical motion module requires a high-rigidity design to resist cutting forces, often employing a double guide rail + ball screw structure or linear motor drive. One end of the three-dimensional moving mechanism 3 is equipped with a replaceable engraving tool 4, which is clamped and fixed at one end of the three-dimensional moving mechanism 3 by a hydraulic clamp (this is prior art), facilitating replacement. The device also includes: a tool changing mechanism 2: the tool changing mechanism 2 is disposed on the inner wall of the engraving machine 1, and the tool changing mechanism 2 is capable of changing tools; and a cleaning mechanism 5: the cleaning mechanism 5 is disposed on the tool changing mechanism 2, and the cleaning mechanism 5 is capable of cleaning the replaced engraving tool 4.

[0022] The tool changing mechanism 2 includes a tool changing box 200 provided on the inner side wall of the engraving machine 1. The tool changing box 200 has a tool changing port 204 on its side wall. The tool changing box 200 has a sealing door mechanism 205 that cooperates with the tool changing port 204 on its side wall. The tool changing box 200 has a tool holder 201 inside. The tool holder 201 has multiple sets of tool slots 202 on its side wall. The tool changing box 200 has a motor 203 on its top. The output end of the motor 203 is connected to the top of the tool holder 201.

[0023] It should be noted that: multiple sets of tool slots 202 can store engraving tools 4 of different specifications, and the sealing door mechanism 205 can open and close the tool changing port 204, improve the sealing of the tool changing box 200, and prevent debris from entering.

[0024] The cleaning mechanism 5 includes an electric telescopic rod 509 located at the bottom of the tool changer 200. One end of the electric telescopic rod 509 has a lifting plate 510. A connecting pipe 507 passes through the top of the lifting plate 510. A through hole is formed at the top of the lifting plate 510. A bearing is fitted onto the outer wall of the connecting pipe 507, and the bearing cooperates with the inner wall of the through hole. Under the action of the bearing, the rotation of the connecting pipe 507 is more stable. A dust extraction pipe 508 is located at one end of the connecting pipe 507, and one end of the dust extraction pipe 508 connects to the external dust collection system. The pump is connected, and the other end of the connecting pipe 507 is provided with a rotary joint 506. The top of the blade changer box 200 is provided with a suction pipe 502. One end of the suction pipe 502 is connected to the rotary joint 506, and the other end of the suction pipe 502 is provided with a chip removal cover 500. A driven gear 503 is sleeved on the outer wall of the suction pipe 502. The top of the lifting plate 510 is provided with a drive motor 505. The output end of the drive motor 505 is connected to a drive gear 504 that meshes with the driven gear 503.

[0025] It should be noted that: the electric telescopic rod 509 raises the lifting plate 510, the chip extraction cover 500 wraps the old knife, the drive motor 505 starts, the cleaning brush 501 rotates to clean the knife, the chip pump extracts the debris, after cleaning is completed, the lifting plate 510 returns to its original position, and the chip extraction cover 500 separates from the knife.

[0026] The chip removal hood 500 is funnel-shaped, and the inner wall of the chip removal hood 500 is provided with cleaning bristles 501.

[0027] It should be noted that when the dust extraction hood 500 rotates, the cleaning bristles 501 can clean the replaced carving knife 4 and remove the debris. The cleaning bristles 501 are made of high-temperature resistant nylon material and can scrape off debris from the surface of the knife.

[0028] Working principle: When engraving a workpiece, the workpiece is fixed inside the engraving machine 1. Under the action of the three-dimensional moving mechanism 3, the engraving cutter 4 can move three-dimensionally within the engraving machine 1. The engraving cutter 4 can engrave the workpiece. When a tool change is required, the sealing door mechanism 205 opens the tool change port 204, the motor 203 drives the tool holder 201 to move, and rotates the empty tool slot 202 to the tool change port 204. The three-dimensional moving mechanism 3 releases the current engraving cutter 4 to the empty tool slot. Then, the electric telescopic rod 509 pushes the lifting plate 510 upward. The lifting mechanism raises the chip extraction hood 500 to fit against the tool surface. The drive motor 505, through the meshing of the drive gear 504 and driven gear 503, rotates the dust extraction pipe 502 and the chip extraction hood 500. The cleaning bristles 501 rotate with the chip extraction hood 500, scraping away debris from the surface of the carving tool 4. An external chip pump generates negative pressure through the dust extraction pipe 508, causing the debris to enter the dust collection device through the connecting pipe 507. Then, the motor 203 drives the tool holder 201 to rotate to the target new tool position. The new tool is then gripped by the hydraulic clamp on the three-dimensional moving mechanism 3, achieving tool changing.

[0029] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tool changing device for a CNC engraving machine, comprising an engraving machine (1) and a three-dimensional moving mechanism (3) disposed within the engraving machine (1), wherein one end of the three-dimensional moving mechanism (3) is provided with a replaceable engraving tool (4), characterized in that, Also includes: Tool changing mechanism (2): The tool changing mechanism (2) is installed on the inner wall of the engraving machine (1), and the tool changing mechanism (2) is capable of changing tools; Cleaning mechanism (5): The cleaning mechanism (5) is installed on the tool changing mechanism (2), and the cleaning mechanism (5) can clean the replaced carving tool (4).

2. The tool changing device for a CNC engraving machine according to claim 1, characterized in that, The tool changing mechanism (2) includes a tool changing box (200) provided on the inner side wall of the engraving machine (1), a tool holder (201) provided in the tool changing box (200), a plurality of tool slots (202) provided on the side wall of the tool holder (201), a motor (203) provided on the top of the tool changing box (200), and the output end of the motor (203) connected to the top of the tool holder (201).

3. The tool changing device for a CNC engraving machine according to claim 2, characterized in that, The tool changer box (200) has a tool change port (204) on its side wall, and a sealing door mechanism (205) that cooperates with the tool change port (204) on its side wall.

4. The tool changing device for a CNC engraving machine according to claim 1, characterized in that, The cleaning mechanism (5) includes an electric telescopic rod (509) located at the bottom of the tool changer (200). One end of the electric telescopic rod (509) is equipped with a lifting plate (510). A connecting pipe (507) runs through the top of the lifting plate (510). One end of the connecting pipe (507) is equipped with a dust extraction pipe (508), which is connected to an external chip suction pump. The other end of the connecting pipe (507) is equipped with a rotary joint (506). The tool changer (200)... A suction pipe (502) is provided through the top of the lifting plate (510). One end of the suction pipe (502) is connected to a rotary joint (506), and the other end of the suction pipe (502) is provided with a flaking cover (500). A driven gear (503) is sleeved on the outer wall of the suction pipe (502). A drive motor (505) is provided on the top of the lifting plate (510), and the output end of the drive motor (505) is connected to a drive gear (504) that meshes with the driven gear (503).

5. A tool changing device for a CNC engraving machine according to claim 4, characterized in that, The chip removal cover (500) is funnel-shaped, and the inner wall of the chip removal cover (500) is provided with cleaning bristles (501).

6. A tool changing device for a CNC engraving machine according to claim 4, characterized in that, The top of the lifting plate (510) has a through hole, and the outer wall of the connecting pipe (507) is fitted with a bearing, which cooperates with the inner wall of the through hole.

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