Four-axis carving machine

Abstract

The utility model discloses a four-shaft carving machine, which belongs to the technical field of mechanical equipment and is characterized in that a clamping mechanism is arranged on a rack and is positioned below a lifting mechanism; the clamping mechanism is mainly composed of a fixing base and a pressing base. Wherein an output shaft driven by a motor is arranged on the inner side of the fixing seat, a jackscrew rod in threaded connection with the pressing seat is arranged on the pressing seat, and a top seat is arranged at the inner end of the jackscrew rod; and the top seat is connected with a bearing at the inner end of the jackscrew. Materials are clamped, free carving can be achieved by moving the carving head within a small range, and working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model discloses a four-axis engraving machine, which belongs to the field of mechanical equipment technology and is suitable for large-scale engraving environments. Background Technology

[0002] From a processing principle perspective, engraving is a combination of drilling and milling. Its applications are wide-ranging, including woodworking engraving machines, laser engraving machines, advertising engraving machines, jade engraving machines, stone engraving machines, and cylindrical engraving machines. Engraving machines have a very wide range of applications, even replacing manual engraving techniques and laying the foundation for large-scale, rapid production. When engraving a workpiece, the cutter head needs to move and oscillate in different directions, while the workpiece also needs to rotate accordingly to achieve three-dimensional processing.

[0003] In existing large-scale engraving machines, the rotation axis of the turntable is perpendicular to the horizontal plane. During engraving, the engraving head moves with a large range of motion but at a low speed, resulting in a significant waste of time. Utility Model Content

[0004] In view of this, the present invention proposes an engraving machine with two sets of strokes, which can directly engrave in the horizontal plane by rotating the material to be engraved.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A four-axis engraving machine includes a frame and a lifting mechanism for raising and lowering the engraving head; the frame is divided into two parts, namely a left upright and a right upright; the lifting mechanism moves up and down between the left upright and the right upright; and it also includes a clamping mechanism.

[0007] The clamping mechanism serves as a workbench, located between the left and right uprights; a fixed beam and a movable beam are provided between the left and right uprights, wherein the two ends of the fixed beam are fixedly connected to the left and right uprights respectively; the movable beam and the fixed beam are parallel to each other, and the movable beam has the degree of freedom to move closer to or away from the fixed beam;

[0008] The clamping mechanism includes a fixed seat and a pressing seat; wherein, the fixed seat is mounted on a fixed beam, and its inner side is provided with an output shaft driven by a motor, the output shaft being connected to the fixed seat bearing; the pressing seat is mounted on a movable beam, and the pressing seat is provided with a screw threadedly connected to it, the inner end of the screw thread being provided with a top seat; the top seat is connected to the inner end of the screw thread bearing; the output shaft and the top seat are facing each other.

[0009] Furthermore, guide rails are provided on the inner sides of both the left and right uprights; the two ends of the moving beam are respectively constrained on the guide rails; the moving beam has the degree of freedom to slide along the guide rails.

[0010] Furthermore, the inner sides of both the left and right uprights are provided with linear modules; the linear modules drive the moving beam, allowing it to slide freely along the guide rail.

[0011] Furthermore, the linear module is a lead screw mechanism; the lead screw mechanism includes a lead screw and a lead screw drive motor; the lead screw is connected to the corresponding side of the upright bearing; the left end of the moving beam is threadedly connected to the lead screw; the lead screw drive motor is mounted on the frame, and its output end is connected to one end of the lead screw.

[0012] Furthermore, a handwheel is provided at the other end of the top screw.

[0013] Furthermore, the handwheel is detachably inserted into the end of the top screw.

[0014] Furthermore, both ends of the top screw pass through the clamping seat, with its exposed portion near the fixed beam connected to the top seat bearing; a locking handle, particularly threaded, is provided on its exposed portion away from the fixed beam.

[0015] Furthermore, it also includes two output pinions; the output shaft is fixedly installed at the central shaft position of the output large gear, and the output pinions are located on both sides of the output large gear and mesh with the output large gear; the motor drives the two output pinions to rotate at the same frequency through a commutator and a reducer.

[0016] The beneficial effects of adopting the above technical solution in this utility model are as follows:

[0017] This utility model uses a clamping structure with opposing clamping to clamp the material, allowing the engraving head to move within a small range to achieve free engraving, greatly improving work efficiency; it can also be equipped with a double lifting mechanism, with a clamping mechanism located directly below each lifting mechanism, allowing them to work simultaneously and speeding up the entire material engraving process. Attached Figure Description

[0018] Figure 1 This is a top view of a simplified structural diagram of an embodiment of this utility model.

[0019] Figure 2 This is a schematic diagram of the longitudinal movement mechanism according to an embodiment of the present invention.

[0020] Figure 3 This is a simplified structural diagram of the motor-driven output shaft in an embodiment of this utility model.

[0021] Figure 4 This is a simplified structural diagram of the gear and fixed base assembly in an embodiment of this utility model.

[0022] In the diagram: 1-1, reducer; 1-2, commutator; 2, motor; 3, output large gear; 4, output shaft; 5, output small gear; 6, lead screw; 7, guide rail; 8, top seat; 9, locking handle; 10, top lead screw; 11, moving beam; 12, handwheel; 13, transverse motor; 14, slider; 15, left mounting plate; 16, transverse lead screw; 17, transverse guide rail; 18, right mounting plate; 19, left upright; 20, right upright; 21, clamping seat; 22, fixed seat; 23, fixed beam. Detailed Implementation

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] The technical solution provided in this embodiment is applied in a carving machine, such as a 3D carving machine. The 3D carving machine includes a frame, a transverse movement mechanism, a longitudinal movement mechanism, a lifting structure, and a processing head. The frame is divided into two parts, a left upright and a right upright, which are located on opposite sides of the worktable. Two longitudinal movement mechanisms are installed on the top of the left upright, and the right transverse movement mechanism is positioned between the left and right uprights. The two ends of the transverse movement mechanism are respectively installed at the moving ends of the two longitudinal movement mechanisms. When the moving ends of the longitudinal movement mechanism move, they drive the transverse movement mechanism to move longitudinally.

[0026] The lifting mechanism is mounted on the moving end of the traversing mechanism; the machining head is mounted on the moving end of the lifting mechanism via a mounting plate. The traversing and lifting of the machining head are provided by the traversing mechanism and the lifting mechanism, respectively. The workpiece is placed on the worktable, and the machining head above the worktable performs the engraving. The specific structure of a 3D engraving machine is common knowledge in the field; the above description is only intended to provide those outside the field with a basic understanding of the structure of a 3D engraving machine.

[0027] This embodiment mainly improves the worktable and uses the clamping mechanism as the worktable.

[0028] Reference Figure 1 The clamping mechanism is located below the lifting mechanism and is connected to the frame by the moving beam 11 and the fixed beam 23; the two ends of the fixed beam 23 are fixedly connected to the left upright 19 and the right upright 20.

[0029] The two ends of the moving beam 11 are slidably connected to the left upright 19 and the right upright 20; guide rails are provided on both sides of the left upright 19 and the right upright 20; the two ends of the moving beam 11 are constrained on the guide rails on both sides; and the sliding of the moving beam 11 on the guide rails is powered by a linear module; the linear module includes, but is not limited to: a lead screw mechanism, a telescopic rod mechanism and a conveyor belt mechanism, etc.

[0030] In this embodiment, a lead screw mechanism and a moving beam 11 are provided for cooperation; specifically, the lead screw mechanism includes a lead screw 6 and a lead screw drive motor; both ends of the lead screw 6 are connected to the bearings of the left upright 19; the end of the moving beam 11 is threadedly connected to the lead screw 6; the lead screw drive motor is mounted on the frame, and its output end is connected to one end of the lead screw 6.

[0031] The output shaft of the lead screw motor rotates, driving the lead screw to rotate. Under the constraint of the guide rail, the moving beam 11 moves linearly along the guide rail, causing the moving beam 11 to move closer to or away from the fixed beam 23.

[0032] The clamping mechanism mainly consists of a fixed seat 22 and a clamping seat 21; the fixed seat 22 is installed on the fixed beam 23, and the clamping seat 21 is fixedly installed on the moving beam 11; the fixed seat 22 and the clamping seat 21 are facing each other.

[0033] To facilitate the clamping effect on the carved object, a top screw 10 is threadedly connected to the clamping seat 21. Both ends of the top screw 10 pass through the clamping seat 21, and its exposed portion near the fixed beam 23 is connected to the bearing of the top seat 8. A locking handle 9 is threadedly connected to its exposed portion away from the fixed beam 23. The end of the top screw 10 is detachably connected to a handwheel 12. The inner end of the top screw 10 is provided with a top seat 8, which is connected to the bearing of the inner end of the top screw 10.

[0034] Reference Figure 4 To facilitate the rotation of the object being carved, an output shaft 4 driven by a motor is provided on the fixed base 22. The output shaft 4 is fixed to the output gear 3 by a key, and the motor drives the output gear 3 to rotate. However, since the object being carved needs to be clamped by the fixed base 22 and the clamping base 21 to remain stable during rotation, two output pinions 5 are used to clamp the output gear 3 and mesh with it. By rotating the two output pinions 5 at the same frequency, a stable torque is further output to the output shaft 4.

[0035] The two output pinions 5 rotate at the same frequency; see reference for details. Figure 3 The motor's torque output is supplied to the reducer 1-1, which outputs two torques at the same frequency; one of them is connected to an output pinion 5 through a commutator 1-2, and the other directly drives the output pinion 5 to rotate.

[0036] A more stable effect can be achieved by making the angle between the lines connecting the two small output gears 5 and the large output gear 3 less than 90°.

[0037] The material is placed between the top seat 8 and the output shaft 4, and clamped in the first step by the linear module. Then, the handwheel 12 is rotated to drive the top screw 10 to rotate and move inward to further clamp the material. The material is then locked by the locking handle 9. After that, the engraving head above the clamping mechanism engraves the material.

[0038] To improve engraving efficiency and the utilization rate of the engraving machine, the engraving machine in this embodiment further improves the transverse movement mechanism; refer to Figure 2 :

[0039] The transverse movement mechanism includes a transverse lead screw 16, a transverse guide rail 17, and an actuation assembly (the actuating end mentioned above); wherein the transverse lead screw 16 and the transverse guide rail 17 are parallel.

[0040] The actuation components and lifting mechanisms are each provided in two sets, and the two are one-to-one. The lifting structure is installed on the corresponding actuation components. The clamping mechanism is also provided in two sets, located directly below the corresponding lifting mechanism. The fixed seats 22 and clamping seats 21 of the two clamping mechanisms are located on the same fixed beam 23 and the same moving beam 11, respectively. That is, two fixed seats 22 are installed on the fixed beam 23, and two clamping seats 21 are installed on the moving beam 11.

[0041] Each motion component includes a transverse motor 13, a transverse slider, and a mounting plate;

[0042] The transverse sliders are all threadedly connected to the transverse lead screw 16; the mounting plate is constrained in the transverse guide rail 17 and is connected to the transverse slider bearing; the transverse motor 13 is located on the mounting plate and is used to drive the slider to rotate; when the transverse motor 13 is working, it drives the transverse slider to rotate, and under the constraint of the transverse lead screw 16, it causes the mounting plate, the transverse motor 13 and the transverse slider to move along the transverse guide rail 17.

[0043] The lifting mechanisms are connected to corresponding mounting plates. One lifting mechanism has a carving head mounted at its end, while the other has a saw blade assembly mounted on it. When using the saw blade assembly, the carving head is placed to the side. In special applications, the saw blade assembly and the carving head can be used simultaneously to carve two materials separately.

Claims

1. A four-axis engraving machine, comprising a frame, a lifting mechanism for lifting an engraving head; the frame is divided into two parts, namely a left stand (19) and a right stand (20); the lifting mechanism moves up and down between the left stand (19) and the right stand (20); characterized in that, Also include clamping mechanism; The clamping mechanism is used as a workbench between the left stand and the right stand; The left stand and the right stand are provided with a fixed beam (23) and a movable beam (11), wherein the two ends of the fixed beam (23) are fixedly connected between the two stands; The movable beam and the fixed beam are parallel to each other, and the movable beam has the freedom of approaching or moving away from the fixed beam; The clamping mechanism includes a fixed seat (22) and a pressing seat (21); wherein the fixed seat is installed on the fixed beam (23), and the inner side thereof is provided with an output shaft (4) driven by a motor (2), and the output shaft is connected with the fixed seat (22) bearing; The pressing seat (21) is installed on the movable beam (11), and the pressing seat (21) is provided with a top screw rod (10) threadedly connected therewith, and the inner end of the top screw rod (10) is provided with a top seat (8); The top seat (8) is connected with the inner end of the top screw rod (10) bearing; The output shaft (4) and the top seat (8) are opposite.

2. The four-axis engraver of claim 1, wherein, The inner side of the left stand and the right stand is provided with a guide rail (7); The two ends of the movable beam are respectively constrained on the guide rail; The movable beam (11) has the freedom of sliding along the guide rail.

3. A four-axis engraver according to claim 2, wherein, The inner side of the left stand and the right stand is also provided with a linear module; The linear module drives the movable beam to slide freely along the guide rail.

4. A four-axis engraver according to claim 3, wherein, The linear module is a lead screw mechanism; The lead screw mechanism includes a lead screw (6) and a lead screw drive motor; The lead screw is connected with the left stand bearing respectively; The left end of the movable beam is threadedly connected with the lead screw; The lead screw drive motor is installed on the rack, and the output end thereof is connected with one end of the lead screw (6), for driving the lead screw (6) to rotate.

5. The four-axis engraver of claim 1, wherein, The other end of the top screw rod (10) is provided with a hand wheel (12).

6. A four-axis engraver according to claim 5, wherein, The hand wheel (12) is detachably connected with the end of the top screw rod (10).

7. The four-axis engraver of claim 1, wherein, The top screw rod (10) penetrates the pressing seat (21) at both ends, and the exposed part close to the fixed beam (23) is connected with the top seat (8) bearing; The exposed part away from the fixed beam (23) is provided with a locking handle (9) threadedly connected therewith.

8. The four-axis engraver of claim 1, wherein, Also include two output pinions (5); The output shaft is fixedly installed at the center axis position of the output gear (3), and the output pinions (5) are located on both sides of the output gear and meshed with the output gear; The motor (2) drives the two output pinions to rotate at the same frequency through the commutator (1-2) and the speed reducer (1-1).

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