A vertical engraving machine

Abstract

The present invention provides a vertical engraving machine, which belongs to the technical field of mechanical processing equipment. It solves the problem of how to improve the engraving accuracy. The vertical engraving machine includes a frame, a tool holder and a mounting seat. The frame includes a base and a three-dimensional movable frame arranged above the base and used to install the tool holder. At least two parallel slide rails are fixed on the base. The three-dimensional movable frame is a frame structure that is columnar and vertically arranged as a whole. The width direction of the three-dimensional movable frame is consistent with the direction of the slide rail; two sliders are fixed on both sides of the bottom of the three-dimensional movable frame, and the above-mentioned sliders are slidably connected with the corresponding slide rails. The mounting seat is fixed relative to the base and is located at one end of the slide rail. Through the above design, during processing, the three-dimensional movable frame moves horizontally and longitudinally with the tool, and the mounting seat does not move, thereby avoiding the problem of inaccurate clamping and positioning caused by unstable movement of the workpiece, which affects the engraving accuracy, and improving the engraving accuracy of the engraving machine.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing equipment and relates to a vertical engraving machine. Background Art

[0002] From the processing principle, engraving is a combination of drilling and milling. It has a wide range of applications, including woodworking engraving machines, laser engraving machines, advertising engraving machines, jade engraving machines, stone engraving machines, cylindrical engraving machines, etc. The application range of engraving machines is very wide, and it has even replaced manual engraving technology, laying the foundation for the rapid mass production of products. Engraving machines are divided into vertical engraving machines and horizontal engraving machines. Among them, vertical engraving machines are mainly used for engraving vertically set columnar workpieces.

[0003] For example, Chinese patent [application number: 201520260602.0] discloses a large vertical five-axis CNC engraving device including a machine body, a carving knife for engraving, a carving knife holder for mounting the carving knife, and a controller for controlling the operation of the large vertical five-axis CNC engraving device. The large vertical five-axis CNC engraving device is provided with a left-right adjustment device for pushing the carving knife holder to move left and right, and an up-down adjustment device for pushing the carving knife holder to move up and down. The carving knife of the large vertical five-axis CNC engraving device can adjust the position in the up-down and left-right directions, and can also rotate the carving knife, and the rotary platform can move forward and backward, so as to facilitate the front-back position adjustment of the handicraft and facilitate engraving.

[0004] However, in the actual processing process, due to the large overall size and heavy weight of the columnar workpiece, when the above-mentioned rotary platform moves back and forth, the clamped workpiece is prone to shaking, resulting in inaccurate position after clamping and positioning, thereby causing a decrease in engraving accuracy.

[0005] The conventional technical means in the prior art generally strengthen the clamping and positioning of the workpiece to avoid the problem that the workpiece is not firmly positioned when the rotary platform moves, which affects the engraving accuracy of the workpiece; or directly design the rotary platform to be stationary to avoid the problem that the workpiece moves and the engraving accuracy decreases. For example, a large-scale environmentally friendly vertical multifunctional three-dimensional CNC engraving machine disclosed in a Chinese patent [application number: 201410077893.X] improves the existing large-scale engraving machine, increases the feed amount of the Z-axis engraving from the center axis, uses a Y beam instead of the forward and backward moving feed, and the Z feed stroke moves within the width of the column, thus avoiding the problem of reduced engraving accuracy caused by the movement of the above-mentioned rotary platform. However, such a design requires that the frame width of the horizontal longitudinal slide rail used to cooperate with the Y-beam be sufficient, resulting in the entire gantry frame being large, which greatly increases the manufacturing cost of the machine; on the other hand, since the width of the Y-beam in the horizontal and longitudinal direction is very narrow, the area of ​​the two ends of the Y-beam in the horizontal and longitudinal direction for sliding cooperation with the slide rail is limited. In addition, due to the vibration caused by the rotation of the tool, it is easy to cause unstable sliding in the horizontal and longitudinal direction, thereby affecting the improvement of the engraving accuracy; at the same time, since the Y-beam itself is suspended on the horizontal longitudinal slide rail and has a long horizontal length, it is easy to be affected by the vertical or longitudinal shear force, resulting in unstable movement in the horizontal and longitudinal direction, which will also affect the engraving accuracy. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems in the prior art and to propose a vertical engraving machine. The technical problem solved by the present invention is how to improve the engraving accuracy.

[0007] The objective of the present invention can be achieved through the following technical solutions: A vertical engraving machine, comprising a frame, a tool rack and a mounting seat, characterized in that the frame comprises a base and a three-dimensional movable frame arranged above the base and used to mount the tool rack, at least two parallel slide rails are fixed on the base, the three-dimensional movable frame is a frame structure that is overall columnar and vertically arranged, and the width direction of the three-dimensional movable frame is consistent with the direction of the slide rail; two sliders are respectively fixed on both sides of the bottom of the three-dimensional movable frame, and the above-mentioned sliders are slidably connected to the corresponding slide rails, and the mounting seat is fixed relative to the base and is located at one end of the slide rail.

[0008] This vertical engraving machine is used to engrave vertical columnar workpieces that are large in overall size, heavy in weight and vertically arranged. During processing, the workpiece is clamped and positioned on the mounting seat. The specific principle of how this vertical engraving machine improves the engraving accuracy of vertical workpieces is as follows: In this engraving machine, the frame is split into two parts: a base and a three-dimensional movable frame for installing a tool holder. The three-dimensional movable frame and the base are slidably connected through the cooperation of a slide rail and a slider, wherein the mounting seat is located at one end of the slide rail and the two are relatively fixed and located in the length direction of the slide rail, so that the three-dimensional movable frame can move with the tool holder to the position of the mounting seat, thereby meeting the requirements of the tool head on the tool holder for engraving the workpiece on the mounting seat; from the above analysis, it can be seen that in this engraving machine, the mounting seat for clamping large-size and heavy-weight workpieces does not move, but The entire three-dimensional moving frame moves with the tool holder for installing the tool head to the position of the mounting seat, thus avoiding the problem of inaccurate clamping positioning caused by unstable movement of the workpiece and affecting the engraving accuracy. In addition, since the three-dimensional moving frame is a frame structure that is overall columnar and vertically arranged, the above structural design not only makes the overall structure of the three-dimensional moving frame stable, but also ensures that the three-dimensional moving frame has sufficient matching area in the length direction of the slide rail when sliding with the base. Combined with the matching position being located at the bottom of the three-dimensional moving frame closer to the ground, the three-dimensional moving frame is very stable and reliable when it moves longitudinally with the tool holder on the base, and then In one step, the tool holder itself is light and not easily affected by the overall movement, thereby greatly improving the engraving accuracy of the engraving machine; at the same time, when two sliders are fixed on both sides of the bottom of the three-dimensional moving frame, that is, when four sliders are used between the base and the three-dimensional moving frame, through the structural design of the three-dimensional moving frame itself, combined with the four-point rectangular arrangement design of the sliders on the bottom surface of the three-dimensional moving frame, it is ensured that the three-dimensional moving frame has sufficient matching area when it cooperates with the base while ensuring the balance of the three-dimensional moving frame, so that the three-dimensional moving frame can move more stably, thereby further improving the engraving accuracy of the engraving machine; or when the two sides of the bottom of the three-dimensional moving frame When a slide bar is fixed to each of them, that is, when two slide bars are used between the above-mentioned base and the three-dimensional movable frame, the three-dimensional movable frame itself is designed with a structure, and the design of the strip-shaped slider is long enough to ensure that the three-dimensional movable frame and the base have sufficient matching area when they are matched, so that the three-dimensional movable frame can move more stably in the horizontal and longitudinal directions, and the engraving accuracy of the engraving machine is further improved at one time; the slide bar in the above-mentioned scheme is equivalent to two sliders, therefore, the base and the three-dimensional movable frame can also be matched with a combination design of sliders and slide bars, that is, two sliders are designed on one side and one slide bar is designed on the other side, which can also improve the engraving accuracy of the engraving machine.

[0009] In the above-mentioned vertical engraving machine, the base is a flat frame structure, and the two slide rails are respectively located on the upper side surfaces of the two sides of the base. The base serves as the base for the horizontal and longitudinal movement of the three-dimensional moving frame. The above-mentioned flat frame structure design can reduce the overall height of the three-dimensional moving frame, which is beneficial to improve the stability of the movement of the three-dimensional moving frame, and further improve the engraving accuracy of the engraving machine. In addition, by designing two slide rails on the base, and the two slide rails are arranged on the upper side of the base, the slider is fixed on the bottom surface of the three-dimensional moving frame, and through the support of the base, the slide rail is not easy to deform when the three-dimensional moving frame slides with the slide rail through the slider, thereby ensuring that the three-dimensional moving frame can slide stably with the tool holder, which is beneficial to improve the engraving accuracy of the engraving machine.

[0010] In the above-mentioned vertical engraving machine, the width of the three-dimensional moving frame is smaller than the width of the base in the length direction of the slide rail. Compared with the prior art solution in which the gantry frame is stationary and the crossbeam is movable, the sliding separation design of the base and the three-dimensional moving frame can make the three-dimensional moving frame smaller in design, which is conducive to cost saving.

[0011] In the above-mentioned vertical engraving machine, the tool holder is connected to the three-dimensional moving frame and can move vertically and horizontally relative to the three-dimensional moving frame; the slide rail is arranged along the horizontal longitudinal direction. The tool holder is connected to the three-dimensional moving frame and can move vertically and horizontally relative to the three-dimensional moving frame. Through the arrangement of the slide rail, the three-dimensional moving frame is slidably connected to the base along the horizontal longitudinal direction, so that the tool holder can move vertically, horizontally, and horizontally, thereby meeting the requirements of the tool head on the tool holder for three-dimensional processing and engraving of the workpiece.

[0012] In the above-mentioned vertical engraving machine, the three-dimensional movable frame includes a frame body and a cross beam that is slidably connected to the frame body and can move vertically, and the tool holder is slidably connected to the cross beam and can slide horizontally; as another scheme, the three-dimensional movable frame includes a frame body and a vertical support plate that is slidably connected to the frame body and can move horizontally, and the tool holder is slidably connected to the vertical support plate and can slide vertically. The above-mentioned cross beam, vertical support plate, tool holder and other components can all be slid by the cooperation of guide rails and sliders. Specifically, a vertical guide rail is fixed on the frame body, and the cross beam is slidably connected to the vertical guide rail and driven by a driving member 1, a transverse guide rail is fixed on the cross beam, and the tool holder is slidably connected to the transverse guide rail and driven by a driving member 2, and the tool holder has a cantilever, and a cutter head and a reduction motor are provided on the cantilever, and the cutter head is driven to rotate by the reduction motor, and the above-mentioned driving members can be driven to slide by driving members such as cylinders, oil cylinders, and screw motors.

[0013] In the above-mentioned vertical engraving machine, the three-dimensional moving frame slides relative to the base under the drive of the driving device, and the driving device is a driving cylinder, a hydraulic cylinder or a screw motor. The driving cylinder or the driving oil cylinder can fix the piston rod to the three-dimensional moving frame to drive the three-dimensional moving frame to slide; the screw motor can cooperate with the screw by fixing a nut on the three-dimensional moving frame, so that the screw motor can drive the three-dimensional moving frame to slide.

[0014] In the above-mentioned vertical engraving machine, the mounting seats are arranged in parallel at one end of the base and connected by a connecting piece; or the mounting seats are directly fixed on one end of the base; or the mounting seats are arranged separately from the base and are located at one end of the base, and a workbench is provided on the mounting seats, and the workbench is driven to rotate by a rotary motor. The position arrangement between the mounting seats and the base adopts the above-mentioned three arrangement methods according to production needs; in addition, the workbench cooperates with the positioning structure to enable the workpiece to be clamped and positioned vertically and can rotate circumferentially at the same time.

[0015] Compared with the existing technology, this vertical engraving machine has the following advantages:

[0016] 1. This vertical engraving machine is designed by splitting the frame into a base and a three-dimensional moving frame slidably connected to the base. During processing, the three-dimensional moving frame moves horizontally and longitudinally with the tool, and the mounting seat does not move, thereby avoiding the problem of inaccurate clamping positioning caused by unstable movement of the workpiece and affecting the engraving accuracy, thereby improving the engraving accuracy of the engraving machine;

[0017] 2. The three-dimensional moving frame in this vertical engraving machine is a frame structure that is columnar and vertically arranged as a whole, and the base is a flat frame structure. This structural design enables the three-dimensional moving frame to move with the tool holder very stably and reliably, greatly improving the engraving accuracy of the engraving machine;

[0018] 3. The three-dimensional moving frame and the base of this vertical engraving machine are designed to slide separately, and the three-dimensional moving frame can be designed to be miniaturized, which is conducive to saving manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the vertical engraving machine in the first embodiment.

[0020] Figure 2 It is a structural schematic diagram of the arrangement of the slide blocks in this vertical engraving machine.

[0021] Figure 3 It is a schematic diagram of the structure of the vertical engraving machine in the second embodiment.

[0022] Figure 4 It is a schematic diagram of the structure of the vertical engraving machine in the third embodiment.

[0023] Figure 5This is a schematic diagram of the structure of the vertical engraving machine in the fourth embodiment. Figure 1 .

[0024] Figure 6 It is a schematic diagram of the single-column positioning structure in this vertical engraving machine.

[0025] Figure 7 This is a schematic diagram of the structure of the vertical engraving machine in the fourth embodiment. Figure 2 .

[0026] Figure 8 This is a schematic diagram of the structure of the vertical engraving machine in the fourth embodiment. Figure 3 .

[0027] Fig. 9 It is a structural schematic diagram of the workbench part in the fifth embodiment.

[0028] Fig.10 yes Fig. 9 A is an enlarged view of the local structure.

[0029] Fig.11 It is a schematic cross-sectional view of the workbench portion in the fifth embodiment.

[0030] Fig.12 yes Fig.11 Enlarged view of the local structure at point B.

[0031] In the figure, 1, frame; 1a, base; 1b, three-dimensional mobile frame; 1b1, frame body; 1b11, rectangular bottom frame; 1b12, column; 1b13, reinforcement frame; 2, tool holder; 2a, cantilever; 2a1, tool head; 2a2, reduction motor; 2b, saw blade; 2c, drill bit; 3, mounting seat; 3a, horizontal plate; 4, slide rail; 5, slider; 6, cross beam; 7, workbench; 71, turntable; 7a, driven gear; 7b, driving gear; 8, rotating motor; 9, reduction gear; 10, connection Parts; 11, vertical guide rail; 12, driving part one; 13, horizontal guide rail; 14, driving part two; 15, sliding sleeve; 16, mounting plate; 17, driving part three; 18, mounting table; 19, lifting block; 20, guide rod; 21, horizontal guide rod; 22, positioning block; 23, driving part four; 24, mounting column; 25, positioning frame; 26, top; 27, abutment plate; 271, limit sleeve; 272, push block; 273, adjusting bolt; 274, thrust spring; a, platform guide; a1, slide plate. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] Embodiment 1:

[0034] Specifically, if Figure 1 As shown, in this embodiment, the engraving machine is a five-axis vertical engraving machine, including a frame 1, a tool holder 2 and a mounting seat 3 for clamping a vertical workpiece, a workbench 7 is provided on the mounting seat 3, the workbench 7 is a turntable structure, and the workbench 7 is driven by a rotating motor 8. Among them, the frame 1 includes a base 1a and a three-dimensional movable frame 1b arranged above the base 1a, the base 1a is a flat frame structure, the three-dimensional movable frame 1b is a frame structure that is columnar and vertically arranged as a whole, and the length of the three-dimensional movable frame 1b in the horizontal longitudinal direction is less than the length of the base 1a in the horizontal longitudinal direction. The mounting seat 3 is arranged in parallel at one end of the base 1a and is connected by a connecting member 10, and is fixed relative to the base 1a. The connecting member 10 can adopt a plate structure, a rod structure, a bracket structure or a pipe beam structure.

[0035] More specifically, the three-dimensional mobile frame 1b includes a frame body 1b1, which includes a rectangular bottom frame 1b11, columns 1b12 fixed on the four corners of the rectangular bottom frame 1b11, and a reinforcing frame 1b13 connected between the columns 1b12. Among them, a vertical guide rail 11 is fixed on the frame body 1b1, a horizontal support beam 6 is slidably connected to the vertical guide rail 11 and driven by a driving member 12, a transverse guide rail 13 is fixed on the horizontal support beam 6, a tool holder 2 is slidably connected to the transverse guide rail 13 and driven by a driving member 2 14, and a cantilever 2a is provided on the tool holder 2, and a cutter head 2a1 and a reduction motor 2a2 are provided on the cantilever 2a, and the cutter head 2a1 is driven to rotate by the reduction motor 2a2. In this embodiment, the above-mentioned driving member is a screw motor. As another scheme, the three-dimensional mobile frame 1b can also include a frame body 1b1 and a vertical support plate slidably connected to the frame body 1b1 and capable of horizontally moving, and the tool holder 2 is slidably connected to the vertical support plate and capable of vertically sliding. The frame 1b1 includes a rectangular frame at the bottom, columns around the rectangular frame, and a reinforcing frame inside the columns. The bottom end of the three-dimensional mobile frame 1b is connected to the base 1a in a horizontal longitudinal sliding manner. The three-dimensional mobile frame 1b slides relative to the base 1a under the drive of a driving device, and can move the tool holder 2 to the top of the mounting seat 3. The driving device is a driving cylinder, a hydraulic cylinder or a screw motor.

[0036] More specifically, in this embodiment, two slide rails 4 arranged in a horizontal longitudinal direction are fixed on the base 1a, and the two slide rails 4 are respectively located on the upper side surfaces of both sides of the base 1a. The three-dimensional moving frame 1b is slidably connected to the above-mentioned slide rails 4 through a slider 5. The slider 5 is fixedly connected to the bottom surface of the three-dimensional moving frame 1b, and its arrangement is as follows: Figure 2 As shown, the width direction of the three-dimensional moving frame 1b is consistent with the length direction of the slide rail 4, and each slide rail 4 is slidably connected to two sliders 5 arranged at intervals along the width direction of the three-dimensional moving frame 1b.

[0037] In addition, this engraving machine can use a single-column positioning structure or a double-column positioning structure to assist in positioning the workpiece. The specific structure is as follows: Figure 6 As shown, a single-column positioning structure is provided on one side of the mounting seat 3, and the single-column positioning structure includes a mounting platform 18, on which four rectangularly distributed guide rods 20 are fixed, and a lifting block 19 is slidably connected to the guide rod 20, and the lifting block 19 is driven by a driving member such as a cylinder / hydraulic cylinder / screw motor, and a horizontal guide rod 21 arranged along the horizontal lateral direction is fixed to the lifting block 19, and a positioning block 22 with a top 26 is slidably connected to the horizontal guide rod 21, and the positioning block 22 is driven by a driving member 23. In this embodiment, the The driving member 23 is a screw motor. Of course, the driving member 23 can also be a driving member such as a cylinder or a hydraulic cylinder; or a double-column positioning structure is provided between the mounting seat 3 and the frame 1, and the double-column positioning structure includes mounting columns 24 located on the left and right sides of the mounting seat 3 and a positioning frame 25 located above the mounting seat 3 and arranged horizontally. The positioning frame 25 is slidably connected to the mounting column 24 and can slide vertically. The positioning frame 25 can be driven by a driving member such as a cylinder / hydraulic cylinder / screw motor, and a top 26 is provided in the middle of the positioning frame 25.

[0038] Embodiment 2:

[0039] The technical solution in this embodiment is basically the same as that in the first embodiment, except that, in this embodiment, Figure 3 As shown, the mounting seat 3 is directly fixed on one end of the base 1a.

[0040] Embodiment three:

[0041] The technical solution in this embodiment is basically the same as that in the first embodiment, except that, in this embodiment, Figure 4 As shown, the mounting seat 3 is arranged separately from the base 1a and is located at one end of the base 1a.

[0042] Embodiment 4:

[0043] The technical solution in this embodiment is basically the same as that in the first embodiment, except that Figure 5 , Figure 7 and Figure 8As shown, in this embodiment, the three-dimensional mobile frame 1b includes two columns 1b12, and the columns 1b12 are fixed with vertical guide rails 11 arranged vertically on the outer sides in the left and right directions. The two ends of the cross beam 6 are respectively provided with sliding sleeves 15 in the shape of rectangular frames. The two sliding sleeves 15 are respectively located in the extension direction of the two ends of the cross beam 6 and are respectively sleeved on the corresponding columns 1b12. The inner side of each sliding sleeve 15 is fixed with a guide block slidably connected to the vertical guide rail 11. The upper side of the cross beam 2 is slidably connected with a mounting plate 16 that can slide horizontally, and the tool holder 2 is fixed to the mounting plate 16. Among them, the upper side of the cross beam 2 is fixed with a horizontal guide rail 13 arranged horizontally, and the mounting plate 16 is slidably connected with the horizontal guide rail 13 and driven by a driving member 3 17, which is driven by a driving member such as a cylinder / hydraulic cylinder / screw motor; the front and rear ends of the tool holder 2 are respectively provided with a saw blade 2b and a drill bit 2c. From the above structural analysis, it can be seen that the vertical slide rail 11 of the engraving machine is far away from the processing area where the front mounting seat 3 of the three-dimensional moving frame 1b is located, and the dustproof effect is good, which can prevent most of the chips from entering the vertical slide rail 11, thereby reducing the wear problem of the vertical slide rail 11 caused by the entry of chips, so that the engraving accuracy of the engraving machine is not easy to decrease after a long time; at the same time, the two ends of the cross support beam 6 are sleeved on the column 1b12 through the sliding sleeve part 15, and because the sliding sleeve part 15 is designed in the straight extension direction of the strip cross support beam 6, the position relationship between the cross support beam 6 and the two columns in the front and rear direction is It will not deviate to one side, and the vertical slide rail 11 is located on the outside of the column 1b12, and the guide block is located on the inside of the sleeve part 15. In other words, none of the sliding matching position, the column 1b12 and the cross support beam 6 will deviate to the front or rear side of the vertical plane where the three are located, so that the cross support beam 6 itself is not easy to generate horizontal and longitudinal components on the vertical slide rail 11, so that the vertical slide rail 11 is not easy to deform or wear on one side, which further makes the engraving accuracy of the engraving machine not easy to decrease, so that the engraving accuracy of the engraving machine can be guaranteed and maintained for a long time. In addition, the above-mentioned sleeve part 15 is annular, and the annular shape includes a square frame structure, a circular sleeve structure, or other annular structures that are surrounded in a circle or have partial gaps.

[0044] Embodiment five:

[0045] This embodiment is a specific structure of the mounting seat 3 and the workbench 7 in the first to fourth embodiments. Specifically, Figures 9 to 12As shown, a driven gear 7a is fixed on the workbench 7, and the engraving machine also includes a driving gear 7b meshing with the driven gear 7a. A platform guide rail a is horizontally provided below the workbench 7, and a driving assembly is slidably provided on the platform guide rail a. The driving gear 7b is connected to the output end of the driving assembly, and a thrust mechanism is provided on the mounting seat 3, which can enable the driving assembly to slide along the platform guide rail a so that the driving gear 7b is pressed against the driven gear 7a. The platform guide rail a is arranged below the workbench 7, which can minimize the impact of debris, dust, etc. on the sliding parts to ensure machining accuracy. At the same time, the active gear 7b is pressed against the driven gear by the thrust of the thrust mechanism, so the tooth gap between the active gear 7b and the driven gear 7a can be eliminated, the transmission accuracy is ensured, and the machining accuracy is improved. Compared with the existing method of improving the installation accuracy of the active gear 7b and the driven gear 7a to ensure the precise fit between the two, which leads to excessively high installation accuracy requirements during disassembly and maintenance and affects the convenience of maintenance, the drive component of the present application is slidably arranged, and the active gear 7b is pushed and pressed against the driven gear 7a by the thrust mechanism. The thrust of the thrust mechanism can be released during disassembly, and there is no need to adjust the installation position of the active gear 7b during installation. It is only necessary to act on the drive component with the thrust mechanism, so maintenance and cleaning are convenient. It is more convenient, and unlike the existing gear that is pressed against the rack by an elastic member to eliminate the gap between teeth, the rack is in the shape of a long strip, and the gear can be pressed at any position of the rack. The elastic member only needs to be able to generate a component force perpendicular to the rack, that is, the position of the gear pressing and the direction of the force are relatively low. In the present application, two gears are meshed, and if the direction of the force of the active gear 7b on the driven gear 7a deviates from the center line of the driven gear 7a, the force on the driven gear 7a will be unbalanced, affecting the accuracy during long-term use. For this reason, the present application pre-sets a platform guide rail, which can accurately control the direction of the platform guide rail, and the platform guide rail a accurately controls the sliding direction of the active gear 7b, that is, accurately controls the direction of the force of the active gear 7b on the driven gear 7a. Therefore, there is no need to adjust the position of the active gear 7b during the subsequent disassembly and maintenance process, making maintenance and cleaning more convenient.

[0046] More specifically, the workbench 7 includes a turntable 71 rotatably arranged on the mounting seat 3, a driven gear 7a is located below the turntable 71 and fixed on the lower side of the turntable 71, and the driving gear 7b moves to the bottom of the turntable 71 under the thrust of the thrust mechanism and meshes with the driven gear 7a. A large amount of debris, dust, etc. will be generated during the processing, and the driving gear 7b and the driven gear 7a are meshed below the turntable 71 to avoid interference of debris, dust, etc. on the transmission, thereby ensuring the processing accuracy, and the platform guide rail a and the sliding arrangement of the drive assembly and the platform guide rail a enable the driving gear 7b located below the turntable 71 to move to the outside of the turntable 71, which is convenient for maintenance and cleaning.

[0047] One end of the platform guide rail a is located below the turntable 71, and the other end of the platform guide rail a extends from the bottom of the turntable 71. The platform guide rail a is parallel to the vertical line connecting the center line of the driving gear 7b and the center line of the driven gear 7a, so that the force of the driving gear 7b on the driven gear 7a is toward the center of the driven gear 7a, so that the driven gear 7a is balanced in force, ensuring the processing accuracy during long-term use. In addition, in this embodiment, there are two platform guide rails a, and the two platform guide rails a are symmetrically arranged on both sides of the vertical line connecting the center line of the driving gear 7b and the center line of the driven gear 7a, and the thrust mechanism is arranged between the two platform guide rails a. The two platform guide rails a provide more symmetrical and uniform support to the drive assembly and the driving gear 7b, so that the transmission accuracy after the driving gear 7b and the driven gear 7a are engaged is higher, thereby improving the processing accuracy.

[0048] The two platform rails a are slidably connected with a slide plate a1, the driving assembly is arranged on the upper side of the slide plate a1, the thrust mechanism includes a thrust spring 274, the driven gear 7a is located between the driving gear 7b and the thrust spring 74, the thrust spring 274 is parallel to the platform rail a, and one end of the thrust spring 274 acts on the driving assembly or the slide plate a1, and the other end acts on the mounting seat 3. The slide plate a1 provides stable support for the driving assembly, and the thrust spring 274 can be one or more, which are parallel to the platform rail a and can generate thrust along the length direction of the platform rail a, so that the driving gear 7b is stably pressed against the driven gear 7a to improve the accuracy. A support plate 27 is also vertically fixed on the mounting seat 3. A limit sleeve 271 is fixed on the support plate 27. The axial direction of the limit sleeve 271 is arranged along the length direction of the platform guide rail a. A push block 272 is slidably arranged in the limit sleeve 271. An adjusting bolt 273 is also screwed on the support plate 27. The end of the adjusting bolt 273 extends into the limit sleeve 271. The other end of the thrust spring 274 extends into the limit sleeve 271 and abuts against the push block 272. Under the action of the thrust spring 274, the push block 272 abuts against the end of the adjusting bolt 273. As an alternative, a slide plate a1 is slidably connected to the two platform guide rails a. The above-mentioned driving assembly is fixed on the upper side of the slide plate a1. The thrust mechanism includes a thrust cylinder, which is fixed on the mounting seat 3. The above-mentioned driven gear 7a is located between the driving gear 7b and the thrust cylinder. The push cylinder is arranged in the longitudinal direction, and the piston rod of the thrust cylinder abuts against the driving assembly or the slide plate a1. The thrust cylinder, as a gas spring, can generate a stable thrust on the driven gear 7a, so as to ensure the transmission accuracy between the driving gear 7b and the driven gear 7a.

[0049] In this embodiment, the mounting seat 3a includes two horizontal mounting plates 3a, one of which is higher than the other, the turntable 71 is rotatably mounted on the higher horizontal mounting plate 3a, the platform guide rail a and the thrust mechanism are mounted on the lower horizontal mounting plate 3a, and one end of the two platform guide rails a extends below the higher horizontal mounting plate 3a. The driving assembly includes a rotary motor 81 and a reducer 9, the reducer 9 is slidably mounted on the platform guide rail a, the rotary motor 81 is connected to the input end of the reducer 9, and the driving gear 7b is fixed to the output end of the reducer 9.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0051] Although this article uses more frame 1, base 1a, three-dimensional mobile frame 1b, frame body 1b1, rectangular bottom frame 1b11, column 1b12, reinforcement frame 1b13, tool holder 2, cantilever 2a, tool head 2a1, reduction motor 2a2, saw blade 2b, drill bit 2c, mounting seat 3, horizontal plate 3a, slide rail 4, slider 5, horizontal support beam 6, workbench 7, turntable 71, driven gear 7a, driving gear 7b, rotating motor 8, reducer 9, connector 10, vertical guide rail 1 1. Driving member 1 12, transverse guide rail 13, driving member 2 14, sleeve 15, mounting plate 16, driving member 3 17, mounting platform 18, lifting block 19, guide rod 20, horizontal guide rod 21, positioning block 22, driving member 4 23, mounting column 24, positioning frame 25, top 26, abutment plate 27, limiting sleeve 271, push block 272, adjusting bolt 273, thrust spring 274, platform guide rail a, slide plate a1 and other terms, but the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A vertical engraving machine, comprising a frame (1), a tool holder (2) and a mounting seat (3), characterized in that: The frame (1) comprises a base (1a) and a three-dimensional movable frame (1b) arranged above the base (1a) and used to mount a tool holder (2); two parallel slide rails (4) are fixed on the base (1a); the two slide rails (4) are respectively located on the upper side surfaces of two sides of the base (1a); the three-dimensional movable frame (1b) is a frame structure that is columnar and vertically arranged as a whole; the width direction of the three-dimensional movable frame (1b) is consistent with the direction of the slide rails (4); two sliders (5) are respectively fixed on both sides of the bottom of the three-dimensional movable frame (1b); the sliders (5) are slidably connected to the corresponding slide rails (4); the mounting seat (3) is fixed relative to the base (1a) and is located at one end of the slide rail (4); the tool holder (2) is connected to the three-dimensional movable frame (1b) and can move vertically and horizontally relative to the three-dimensional movable frame (1b); the slide rails (4) are arranged along the horizontal longitudinal direction; the mounting seat A single-column positioning structure is provided on one side of (3), the single-column positioning structure comprising a mounting platform (18), four rectangularly distributed guide rods (20) are fixed on the mounting platform (18), a lifting block (19) is slidably connected to the guide rod (20), a horizontal guide rod (21) arranged horizontally and laterally is fixed on the lifting block (19), a positioning block (22) provided with a top (26) is slidably connected to the horizontal guide rod (21), and the positioning block (22) is driven by a fourth driving member (23); or a double-column positioning structure is provided between the mounting seat (3) and the frame (1), the double-column positioning structure comprising mounting columns (24) located on the left and right sides of the mounting seat (3) and a positioning frame (25) located above the mounting seat (3) and arranged horizontally, the positioning frame (25) is slidably connected to the mounting columns (24) and can slide in the vertical direction, and a top (26) is provided in the middle of the positioning frame (25).

2. The vertical engraving machine according to claim 1, characterized in that: The base (1a) is a flat frame structure.

3. The vertical engraving machine according to claim 2, characterized in that: The width of the three-dimensional moving frame (1b) is smaller than the width of the base (1a) in the length direction of the slide rail (4).

4. The vertical engraving machine according to claim 1, characterized in that: The three-dimensional movable frame (1b) comprises a frame body (1b1) and a cross beam (6) slidably connected to the frame body (1b1) and capable of moving vertically; the tool holder (2) is slidably connected to the cross beam (6) and capable of sliding horizontally.

5. The vertical engraving machine according to claim 1, characterized in that: The three-dimensional movable frame (1b) comprises a frame body (1b1) and a vertical support plate slidably connected to the frame body (1b1) and capable of horizontally moving, and the tool holder (2) is slidably connected to the vertical support plate and capable of vertically sliding.

6. The vertical engraving machine according to claim 1, 2 or 3, characterized in that: The mounting seats (3) are arranged in parallel at one end of the base (1a) and are connected via a connecting piece (10); a workbench (7) is provided on the mounting seats (3); and the workbench (7) is driven to rotate by a rotating motor (8).

7. The vertical engraving machine according to claim 1, 2 or 3, characterized in that: The mounting seat (3) is directly fixed on one end of the base (1a); a workbench (7) is provided on the mounting seat (3); and the workbench (7) is driven to rotate by a rotating motor (8).

8. The vertical engraving machine according to claim 1, 2 or 3, characterized in that: The mounting seat (3) is arranged separately from the base (1a) and is located at one end of the base (1a). A workbench (7) is provided on the mounting seat (3), and the workbench (7) is driven to rotate by a rotating motor (8).

9. The vertical engraving machine according to claim 4, characterized in that: The frame body (1b1) comprises a rectangular bottom frame (1b11), upright posts (1b12) fixed on four corners of the rectangular bottom frame (1b11), and a reinforcing frame (1b13) connected between the upright posts (1b12).

10. The vertical engraving machine according to claim 4, characterized in that: A vertical guide rail (11) is fixed on the frame body (1b1), the horizontal support beam (6) is slidably connected to the vertical guide rail (11) and is driven by a first driving member (12), a transverse guide rail (13) is fixed on the horizontal support beam (6), the tool holder (2) is slidably connected to the transverse guide rail (13) and is driven by a second driving member (14), the tool holder (2) has a cantilever (2a), a cutter head (2a1) and a reduction motor (2a2) are provided on the cantilever (2a), and the cutter head (2a1) is driven to rotate by the reduction motor (2a2).

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