Multi-tool-bit engraving device

Abstract

The utility model relates to a multi-tool-bit carving device which comprises a machine frame and a working table, a tool frame is installed on the machine frame above the working table through a three-axis linear module, tools are transversely installed on the tool frame at intervals, a first motor is installed on the tool frame, and a fixing base is further transversely arranged on the working table. A transmission shaft is transversely and rotationally installed on the fixing base through a plurality of supports, a second motor used for driving the transmission shaft to rotate is installed at the position, at one end of the transmission shaft, of the fixing base, and a plurality of first bevel gears are installed on the transmission shaft at equal intervals. Positioning columns which are the same as the first bevel gears in number and are perpendicular to the transmission shaft are rotationally installed on the side, in the length direction of the transmission shaft, of the fixing base through a bearing seat, second bevel gears meshed with the first bevel gears are installed at the ends, close to the transmission shaft, of the positioning columns, and three-jaw chucks are installed at the other ends of the positioning columns. According to the utility model, synchronous rotation of each workpiece during cutter engraving can be ensured, so that the engraving accuracy is effectively improved, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control engraving, in particular to a multi-tool head engraving device. Background Art

[0002] Engraving is the process of processing materials to make them into a workpiece that everyone needs. Engraving machines are widely used and can process and carve wood, stone, metal, jade, etc., removing excess parts to make it a qualified product, laying the foundation for large-scale and rapid production of products.

[0003] In the current prior art, a multi-tool engraving device usually uses a fixture to clamp the workpiece, and then each fixture is configured with an independent motor to drive it to rotate according to different engraving positions. Due to the lack of connection between each motor, it is impossible for the rotation speed of each motor to be completely consistent, that is, the rotation speed of the workpiece clamped by each fixture will be different during the engraving process, which will easily lead to poor consistency in the patterns engraved by each tool, thereby reducing the quality of the engraved product. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a multi-tool engraving device, which can ensure that multiple workpieces rotate synchronously during engraving, thereby effectively improving the engraving accuracy and improving product quality.

[0005] The utility model is realized through the following technical solutions:

[0006] A multi-tool head engraving device is provided, comprising a frame and a workbench installed on the frame, wherein a tool holder arranged transversely is installed on the frame above the workbench through a three-axis linear module, a plurality of tools for engraving are arranged transversely at intervals on the tool holder, a first motor capable of driving each tool to rotate synchronously is arranged on the tool holder, a fixed seat is arranged transversely on the workbench, a transmission shaft is arranged transversely and rotatably on the fixed seat through a plurality of supports, a second motor for driving the transmission shaft to rotate is arranged at one end of the transmission shaft on the fixed seat, a plurality of first bevel gears are arranged at equal intervals on the transmission shaft, a positioning column having the same number as the first bevel gears and perpendicular to the transmission shaft is rotatably installed on the fixed seat through a bearing seat on one side in the length direction of the transmission shaft, a second bevel gear meshing with the first bevel gear is arranged at one end of the positioning column close to the transmission shaft, and a three-jaw chuck is arranged at the other end of the positioning column.

[0007] Furthermore, the workbench is also provided with a mounting seat horizontally on one side in the length direction of the fixed seat, and an adjustment mechanism is installed on the mounting seat corresponding to each three-jaw chuck. The adjustment mechanism includes a threaded sleeve fixed on the mounting seat, and the inner thread of the threaded sleeve is rotatably connected to a stud perpendicularly facing the center of the three-jaw chuck. One end of the stud close to the three-jaw chuck is rotatably connected to a fixed column through a bearing, and the other end of the stud is connected to a handwheel.

[0008] A mounting seat is provided on the workbench, and an adjustment mechanism is provided with the same number as and directly opposite to the three-jaw chuck. By turning the handwheel of the adjustment mechanism, the position of the locating column on the stud can be conveniently adjusted so that it can cooperate with the three-jaw chuck to clamp the workpiece tightly and ensure the stability of the workpiece when rotating.

[0009] Preferably, the end of the fixing post is formed with a tapered tip.

[0010] The workpiece forms a matching positioning opening corresponding to the conical tip, and the positioning opening and the conical tip cooperate with each other to improve the stability of clamping.

[0011] Furthermore, a protective cover is installed on the fixing seat to cover the transmission shaft, the first bevel gear and the second bevel gear, and a positioning opening for the positioning column to pass through is correspondingly opened on the side of the protective cover.

[0012] A protective cover is arranged on the fixed seat to protect the internal transmission shaft, the first bevel gear and the second bevel gear, so as to prevent the waste residues and waste materials generated during engraving from entering the bevel gears and affecting the meshing stability of the bevel gears, thereby helping to ensure the rotation stability of the transmission shaft.

[0013] Furthermore, the tool includes a mounting block with a cavity therein, the mounting block is vertically fixed to the tool holder through a connecting sleeve, a rotating shaft is rotatably installed in the cavity of the mounting block and passes through the cavity downward, the lower end of the rotating shaft is connected to the cutter head, the upper end of the rotating shaft is connected to the end of the rotating shaft rotatably connected in the connecting sleeve through an engaging bevel gear set, each end of the rotating shaft is connected to a double-groove pulley, two adjacent double-groove pulleys are connected by a synchronous belt drive, and the center of the double-groove pulley on one of the rotating shafts is connected to the drive shaft of the first motor.

[0014] By designing one motor to drive all the tools, the motor control system is simplified.

[0015] In addition, the transmission shafts connected to the tools are connected through belt transmission, so that the synchronization rate between the tools is higher and the images engraved by the engraving machine at the same time are more consistent.

[0016] Beneficial effects of the utility model:

[0017] The utility model meshes the first bevel gear and the second bevel gear through the transmission shaft, so that each workpiece is synchronously driven to rotate by a second motor during engraving, which can effectively improve the stability of tool engraving. At the same time, each tool is synchronously driven to rotate by a first motor in cooperation with a double-groove pulley and a synchronous belt, so that the rotation speed of each tool is consistent, further improving the stability of engraving, making the pattern engraved on the workpiece more consistent, and significantly improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic top view of the installation structure of the fixing seat in the utility model.

[0020] Figure 3 This is a schematic diagram of tool installation on the tool rack in the utility model.

[0021] Figure 4 It is a schematic diagram of the internal structure of the installation block in the utility model.

[0022] As shown in the figure:

[0023] 1. Frame, 2. Workbench, 3. Three-axis linear module, 4. Cutter head, 5. Fixed seat, 6. Positioning column, 7. Second motor, 8. Protective cover, 9. Three-jaw chuck, 10. Mounting seat, 11. Threaded sleeve, 12. Bearing, 13. Fixed column, 14. Stud, 15. Handwheel, 16. Transmission shaft, 17. First bevel gear, 18. Second bevel gear, 19. Bearing seat, 20. Mounting block, 21. Connecting sleeve, 22. Double-groove pulley, 23. Synchronous belt, 24. First motor, 25. Bevel gear set, 26. Rotating shaft, 27. Rotating shaft. DETAILED DESCRIPTION

[0024] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0025] A multi-tool engraving device comprises a frame 1 and a workbench 2 mounted on the frame 1, wherein the frame 1 is provided with a transversely arranged tool holder via a three-axis linear module 3 above the workbench 2, a plurality of tools for engraving are transversely installed at intervals on the tool holder, and a first motor 24 is installed on the tool holder which can drive each tool to rotate synchronously.

[0026] The tool includes a mounting block 20 with a cavity therein, the mounting block 20 is vertically fixed on the tool holder through a connecting sleeve 21, a rotating shaft 26 that penetrates the cavity downward is rotatably mounted in the cavity of the mounting block 20, the lower end of the rotating shaft 26 is connected to the cutter head 4, the upper end of the rotating shaft 26 is connected to the end of a rotating shaft 27 rotatably connected in the connecting sleeve 21 through an engaged bevel gear set 25, each end of the rotating shaft 27 is connected to a double-groove pulley 22, two adjacent double-groove pulleys 22 are connected by a synchronous belt 23, and the center of the double-groove pulley 22 on one of the rotating shafts 27 is connected to the drive shaft of the first motor 24.

[0027] A fixed seat 5 is also arranged horizontally on the workbench 2, and a transmission shaft 16 is installed on the fixed seat 5 for horizontal rotation through multiple supports. A second motor 7 for driving the transmission shaft 16 to rotate is installed on one end of the transmission shaft 16 of the fixed seat 5, and multiple first bevel gears 17 are installed on the transmission shaft 16 at equal intervals. A positioning column 6 having the same number as the first bevel gears 17 and perpendicular to the transmission shaft 16 is rotatably installed on one side of the length direction of the transmission shaft 16 of the fixed seat 5 through a bearing seat 19. A second bevel gear 18 meshing with the first bevel gear 17 is installed on one end of the positioning column 6 close to the transmission shaft 16, and a three-jaw chuck 9 is installed on the other end of the positioning column 6. In order to ensure the stability of the transmission of the transmission shaft 16, a protective cover 8 is installed on the fixed seat 5 to cover the transmission shaft 16, the first bevel gear 17 and the second bevel gear 18, and a positioning port for the positioning column 6 to pass through is correspondingly opened on the side of the protective cover 8.

[0028] The workbench 2 is also laterally provided with a mounting seat 10 on one side in the length direction of the fixed seat 5, and an adjustment mechanism is installed on the mounting seat 10 corresponding to each three-jaw chuck 9. The adjustment mechanism includes a threaded sleeve 11 fixed on the mounting seat 10, and the threaded sleeve 11 is rotatably connected to a stud 14 that is perpendicular to the center of the three-jaw chuck 9. One end of the stud 14 close to the three-jaw chuck 9 is rotatably connected to a fixed column 13 through a bearing 12. The end of the fixed column 13 is formed with a conical tip, and the other end of the stud 14 is connected to a handwheel 15.

[0029] The working process of this utility model:

[0030] First, the workpiece is clamped between the adjustment mechanism and the three-jaw chuck 9 in sequence, and the length of the stud 14 extending out of the threaded sleeve 11 is adjusted by rotating the hand wheel 15. The two ends of the workpiece are clamped by the positioning column 13 and the three-jaw chuck 9 to clamp and position the workpiece. The second motor 7 is started, and the second motor 7 drives the transmission shaft 16 to rotate. The transmission shaft 16 uses the first bevel gear 17 and the second bevel gear 18 to mesh with each other to drive each positioning column 6 to rotate synchronously, and then drives each workpiece to rotate synchronously. The first motor 24 is started, and the first motor 24 drives the double-groove pulley 22 through the double-groove pulley 22 and the synchronous belt 23. The double-groove pulley 22 that drives each tool to rotate synchronously, the double-groove pulley 22 drives the rotating shaft 27 to rotate, the rotating shaft 27 drives the rotating shaft 26 to rotate through the bevel gear set 25, and then drives the cutter head 4 to rotate for engraving. According to the different engraving patterns of the product, the controller is used in conjunction with the three-axis linear module 3 to drive the cutter head 4 to move different trajectories in space, so as to achieve the engraving task of the workpiece. During the workpiece engraving process, each workpiece keeps rotating synchronously, and the cutter head 4 above each workpiece also keeps rotating synchronously, thereby greatly improving the engraving accuracy, making the engraving patterns of each workpiece consistent, and improving the product quality.

[0031] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A multi-tool engraving device, comprising a frame and a workbench mounted on the frame, wherein a tool holder arranged transversely is mounted on the frame above the workbench through a three-axis linear module, a plurality of tools for engraving are installed transversely at intervals on the tool holder, and a first motor capable of driving each tool to rotate synchronously is installed on the tool holder, characterized in that: A fixed seat is also arranged horizontally on the workbench, and a transmission shaft is installed on the fixed seat for horizontal rotation through multiple supports. A second motor for driving the transmission shaft to rotate is installed at one end of the transmission shaft on the fixed seat. Multiple first bevel gears are installed on the transmission shaft at equal intervals. A positioning column with the same number as the first bevel gears and perpendicular to the transmission shaft is rotatably installed on one side of the length direction of the transmission shaft on the fixed seat through a bearing seat. A second bevel gear meshing with the first bevel gear is installed on one end of the positioning column close to the transmission shaft, and a three-jaw chuck is installed on the other end of the positioning column.

2. The multi-tool engraving device according to claim 1, characterized in that: The workbench is also provided with a mounting seat horizontally on one side of the length direction of the fixed seat, and an adjustment mechanism is installed on the mounting seat corresponding to each three-jaw chuck. The adjustment mechanism includes a threaded sleeve fixed on the mounting seat, and the inner thread of the threaded sleeve is rotatably connected to a stud vertically facing the center of the three-jaw chuck. One end of the stud close to the three-jaw chuck is rotatably connected to a fixed column through a bearing, and the other end of the stud is connected to a handwheel.

3. The multi-tool engraving device according to claim 2, characterized in that: The end of the fixing post is formed with a tapered tip.

4. The multi-tool engraving device according to claim 1, characterized in that: A protective cover is installed on the fixing seat to cover the transmission shaft, the first bevel gear and the second bevel gear, and a positioning opening for the positioning column to pass through is correspondingly opened on the side of the protective cover.

5. The multi-tool engraving device according to claim 1, characterized in that: The tool includes a mounting block with a cavity therein, the mounting block is vertically fixed on the tool holder through a connecting sleeve, a rotating shaft that penetrates the cavity downward and is rotatably mounted in the cavity of the mounting block, a cutter head is connected to the lower end of the rotating shaft, the upper end of the rotating shaft is connected to the end of a rotating shaft rotatably connected in the connecting sleeve through an engaged bevel gear set, each end of the rotating shaft is connected to a double-groove pulley, two adjacent double-groove pulleys are connected by a synchronous belt drive, and the center of the double-groove pulley on one of the rotating shafts is connected to the drive shaft of the first motor.

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