A four-axis double-sided engraving machine

Abstract

The invention discloses a four-axis double-sided engraving machine in the technical field of engraving machines, comprising a main frame, a telescopic support mechanism is arranged at the bottom of the inner cavity of the main frame, the telescopic support mechanism can slide left and right relative to the main frame, a workpiece lifting and pressing structure is arranged at the top of the telescopic support mechanism, a workpiece lifting and flipping mechanism is arranged on the left side of the main frame, a Y-axis moving mechanism is arranged at the top of the main frame, an X-axis moving mechanism is arranged at the top moving end of the Y-axis moving mechanism, a Z-axis moving mechanism is arranged at the front moving end of the X-axis moving mechanism, and an engraving spindle is installed below the front lifting end of the Z-axis moving mechanism. The invention provides a four-axis double-sided engraving machine, for blanks with larger surface sizes and more details to be engraved, the telescopic support mechanism can be unfolded to fit with the bottom surface of the blank to assist in supporting the blank, so as to prevent shaking during processing and thus affect the appearance of product details.

Description

Technical Field

[0001] The invention relates to the technical field of engraving machines, in particular to a four-axis double-sided engraving machine. Background Art

[0002] The main structure of the foam engraving machine is a fixed bed frame, a longitudinally movable gantry, a transversely movable head assembly, a vertically movable head, a spindle and a tool, which realize the foam engraving processing of the whole machine. The fixed bed frame adopts a high-strength square tube structure to improve the overall strength and structural stability of the frame, so as to improve the accuracy of the engraving processing. The Y-axis guide rail is laid flat on the side beam of the frame to effectively improve the stability of the gantry beam. At the same time, the foam workpiece is clamped on the fixed bed frame, and the foam engraving function is realized through the gantry beam and the head components. The foam engraving machine is a CNC equipment specialized in processing foam. It is a light CNC machine tool. Compared with heavy metal cutting machine tools, the rigidity and precision requirements of the foam engraving machine are slightly lower.

[0003] Traditional foam engraving machines can generally only support single-piece engraving processing. In order to improve the working efficiency and processing diversification of the engraving machine, such as the "practical new foam engraving machine" published in the utility model patent with patent application number CN201620998695.1, or the "a new four-axis foam engraving machine" published in the utility model patent with patent application number CN201821934352.4, such devices add a fourth axis for workpiece flipping on the basis of the traditional three-axis engraving machine, thereby realizing the function of processing the surrounding wall of columnar sculptures, and at the same time, the sculpture flipping operation of ordinary plane processing can also be automatically completed by the equipment, which improves the processing efficiency of the device to a certain extent. However, the existing four-axis engraving machine clamps the workpiece blank generally by clamping the two ends of the equipment clamping mechanism towards each other. During processing, the blank is in a completely suspended state. Especially for blanks with larger surface sizes and more required engraving details, different degrees of jitter will occur during engraving processing, which reduces the engraving accuracy and affects the appearance of product details.

[0004] Based on this, a four-axis double-sided engraving machine is invented and designed to solve the above problems. Summary of the invention

[0005] The purpose of the invention is to provide a four-axis double-sided engraving machine to solve the above technical problems.

[0006] To achieve the above-mentioned purpose, the invention provides the following technical solutions: a four-axis double-sided engraving machine, comprising a main frame, a telescopic support mechanism is arranged at the bottom of the inner cavity of the main frame, the telescopic support mechanism can be slid left and right relative to the main frame, a workpiece lifting and pressing structure is arranged on the top of the telescopic support mechanism, a workpiece lifting and flipping mechanism is arranged on the left side of the main frame, a Y-axis moving mechanism is arranged on the top of the main frame, an X-axis moving mechanism is arranged at the top moving end of the Y-axis moving mechanism, a Z-axis moving mechanism is arranged at the front moving end of the X-axis moving mechanism, and an engraving spindle is installed below the front lifting end of the Z-axis moving mechanism.

[0007] Preferably, the telescopic support mechanism includes a pair of first sliding bar guides and a pair of second sliding bar guides, the first sliding bar guides are installed upwards, and a support mounting plate for installing the workpiece lifting and pressing structure is slidably installed on the top of the first sliding bar guide through a first supporting mechanism slider, and the second sliding bar guides are installed laterally facing each other, and a plurality of profile support beams equidistantly and side by side are slidably installed on the second sliding bar guide through a second supporting mechanism slider, and a scissors-type telescopic frame is arranged between the second sliding bar guides, and both side ends of the scissors-type telescopic frame are slidably installed in the bottom slide groove of the profile support beam through a hinge pin shaft, and telescopic cylinders are hingedly installed on both sides of the bottom of the support mounting plate, and the telescopic ends of the telescopic cylinders on both sides are respectively hinged to the two side ends of the scissors-type telescopic frame.

[0008] Preferably, a positioning screw is threaded on the top of the sliding block of the first supporting mechanism, and the bottom end of the positioning screw abuts against the first sliding rod guide rail when being tightened.

[0009] Preferably, the workpiece lifting and pressing structure includes a gantry mounting frame, right lifting slide rails are provided on the left and right sides of the gantry mounting frame, a right lifting mounting plate is slidably installed on the right lifting slide rail via a right lifting slider, a pressing plate is rotatably installed on the right lifting mounting plate via a rotating bearing seat, a motor mounting seat is provided under the gantry mounting frame, a right lifting motor and a right lifting screw rod are installed on the top of the motor mounting seat, the bottom ends of the right lifting motor and the right lifting screw rod are transmission connected via a lifting synchronous belt assembly, a right lifting nut seat is screwed on the right lifting screw rod, and the right lifting nut seat is fixedly installed on one side of the right lifting mounting plate.

[0010] Preferably, the workpiece lifting and flipping mechanism comprises a left lifting rail mounted on the left side of the main frame. A left lifting mounting plate is slidably mounted on the left lifting rail through a left lifting slider, a reversing transmission box is mounted on the outer side of the left lifting mounting plate, a flip motor is mounted on the bottom of the reversing transmission box, a flip plate is installed on the inner side of the reversing transmission box, a left lifting motor seat is installed on the left side of the main frame and between the left lifting rails, a left lifting motor is mounted on the bottom of the left lifting motor seat, a left lifting screw is transmission-connected to the top output end of the left lifting motor, a left lifting nut seat is screwed on the outer wall of the left lifting screw, and the left lifting nut seat is fixedly mounted on one side of the left lifting mounting plate.

[0011] Preferably, the Y-axis moving mechanism includes a Y-axis main beam spanning the left and right sides of the main frame, main beam support seats are symmetrically arranged on the left and right sides of the bottom of the Y-axis main beam, a Y-axis slide rail is slidably installed on the bottom of the main beam support seat through a Y-axis slider, the Y-axis slide rail is fixedly installed on the main frame, a Y-axis transmission box is installed on the main beam support seat, a Y-axis motor is installed on the top of the Y-axis transmission box, a Y-axis driving gear connected to the Y-axis motor is arranged at the bottom of the Y-axis transmission box, a Y-axis rack is meshed with one side of the Y-axis driving gear, and the Y-axis rack is fixedly installed on the main frame.

[0012] Preferably, the X-axis moving mechanism includes a pair of X-axis slide rails fixedly mounted on the Y-axis moving mechanism, an X-axis mounting plate is slidably mounted on the X-axis slide rails through the X-axis slider, an X-axis transmission box is mounted on the front side of the X-axis mounting plate, an X-axis motor is mounted on the front side of the X-axis transmission box, an X-axis driving gear connected to the X-axis motor is arranged on the rear side of the X-axis transmission box, an X-axis rack is meshed on the top of the X-axis driving gear, the X-axis rack is fixedly mounted on the Y-axis moving mechanism, a Z-axis lifting frame is arranged on the front side of the X-axis mounting plate, and the back of the Z-axis lifting frame Z-axis lifting rails are fixedly installed on both sides of the surface, and the Z-axis lifting rails are slidably installed with the X-axis mounting plate through the Z-axis lifting slider, a Z-axis motor is installed on the top of the inner cavity of the Z-axis lifting frame, and a Z-axis lifting screw is rotatably installed on the middle part of the back side of the Z-axis lifting frame, and the top of the Z-axis lifting screw is transmission-connected to the top output end of the Z-axis motor through a Z-axis synchronous belt assembly, a Z-axis lifting nut seat is screwed on the outer wall of the Z-axis lifting screw, and the Z-axis lifting nut seat is fixedly installed with the X-axis mounting plate, and the engraving spindle is fixedly installed with the bottom of the Z-axis lifting frame.

[0013] Preferably, a cylinder mounting plate is installed on the front side of the X-axis mounting plate, an auxiliary lifting cylinder is installed on the cylinder mounting plate, and the bottom telescopic end of the auxiliary lifting cylinder is connected to the bottom outer side wall of the Z-axis lifting frame.

[0014] Preferably, a profile panel is laid on the bottom of the main frame, and the profile panel is located at the front and rear sides of the telescopic support mechanism.

[0015] Compared with the prior art, the invention has the following beneficial effects:

[0016] The four-axis double-sided engraving machine of the present invention mainly includes structures such as a telescopic support mechanism, a workpiece lifting and pressing structure, a workpiece lifting and flipping mechanism, a Y-axis moving mechanism, an X-axis moving mechanism, a Z-axis moving mechanism and an engraving spindle, wherein the Y-axis moving mechanism, the X-axis moving mechanism and the Z-axis moving mechanism cooperate to enable the engraving spindle to run in a three-dimensional space to realize three-dimensional stereoscopic engraving; the workpiece lifting and pressing structure and the workpiece lifting and flipping mechanism cooperate to clamp and fix the workpiece blank and realize automatic rotation or rotation, thereby realizing column sculpture processing and double-sided sculpture automatic continuous processing. In addition, the telescopic support mechanism in the device is arranged at the bottom of the main frame and can be automatically controlled to extend and retract through two sets of telescopic cylinders. When the blank is turned over or the main body blank is processed, the telescopic support mechanism can automatically retract and avoid, especially for blanks with larger surface sizes and more required engraving details, the telescopic support mechanism can be unfolded and fit with the bottom surface of the blank to assist in supporting the blank, so as to prevent shaking during the processing process and thus affect the appearance of product details. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a schematic diagram of the structure of the telescopic support mechanism of the present invention;

[0021] Figure 4 The telescopic support structure of the present invention is schematically shown in FIG. Figure 2 ;

[0022] Figure 5 This is a schematic diagram of the workpiece lifting and pressing structure of the present invention;

[0023] Figure 6 The schematic diagram of the workpiece lifting and pressing structure of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the structure of the workpiece lifting and flipping mechanism of the present invention;

[0025] Figure 8 The schematic diagram of the workpiece lifting and flipping mechanism of the present invention is shown in FIG. Figure 2 ;

[0026] Fig. 9 This is a schematic diagram of the structure of the Y-axis moving mechanism of the present invention;

[0027] Fig.10 The Y-axis moving mechanism structure of the present invention is shown in FIG. Figure 2 ;

[0028] Fig.11 This is a schematic diagram of the X-axis moving mechanism structure of the present invention;

[0029] Fig.12 The X-axis moving mechanism structure of the present invention is shown in FIG. Figure 2 .

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1-main frame, 2-telescopic support mechanism, 3-workpiece lifting and pressing structure, 4-workpiece lifting and flipping mechanism, 5-Y-axis moving mechanism, 6-X-axis moving mechanism, 7-Z-axis moving mechanism, 8-engraving spindle, 9-profile panel;

[0032] 21-first slide bar guide rail, 22-second slide bar guide rail, 23-first support mechanism slider, 24-support mounting plate, 25-second support mechanism slider, 26-profile support beam, 27-scissor telescopic frame, 28-hinge pin shaft, 29-telescopic cylinder, 210-positioning screw;

[0033] 31-gantry mounting frame, 32-right lifting rail, 33-right lifting slider, 34-right lifting mounting plate, 35-rotating bearing seat, 36-pressure plate, 37-motor mounting seat, 38-right lifting motor, 39-right lifting screw rod, 310-lifting synchronous belt assembly, 311-right lifting nut seat;

[0034] 41-left lifting rail, 42-left lifting slider, 43-left lifting mounting plate, 44-reversing transmission box, 45-flip motor, 46-flip plate, 47-left lifting motor seat, 48-left lifting motor, 49-left lifting screw rod, 410-left lifting nut seat;

[0035] 51-Y-axis main beam, 52-main beam support seat, 53-Y-axis slider, 54-Y-axis slide rail, 55-Y-axis transmission box, 56-Y-axis motor, 57-Y-axis driving gear, 58-Y-axis rack;

[0036] 61-X-axis slide rail, 62-X-axis slider, 63-X-axis mounting plate, 64-X-axis transmission box, 65-X-axis motor, 66-X-axis driving gear, 67-X-axis rack, 68-Z-axis lifting frame, 69-Z-axis lifting slide rail, 610-auxiliary lifting cylinder, 611-Z-axis motor, 612-Z-axis lifting screw, 613-Z-axis synchronous belt assembly, 614-cylinder mounting plate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0038] See also Figure 1-12 The invention provides a technical solution: a four-axis double-sided engraving machine, including a main frame 1, a telescopic support mechanism 2 is arranged at the bottom of the inner cavity of the main frame 1, the telescopic support mechanism 2 can be slid left and right relative to the main frame 1, a workpiece lifting and pressing structure 3 is arranged on the top of the telescopic support mechanism 2, a workpiece lifting and flipping mechanism 4 is arranged on the left side of the main frame 1, a Y-axis moving mechanism 5 is arranged on the top of the main frame 1, an X-axis moving mechanism 6 is arranged at the top moving end of the Y-axis moving mechanism 5, a Z-axis moving mechanism 7 is arranged at the front moving end of the X-axis moving mechanism 6, and an engraving spindle 8 is installed below the front lifting end of the Z-axis moving mechanism 7.

[0039] Further, such as Figure 3-4 As shown, the telescopic support mechanism 2 includes a pair of first slide bar guide rails 21 and a pair of second slide bar guide rails 22, the first slide bar guide rails 21 are installed upward, and a support mounting plate 24 for mounting a workpiece lifting and pressing structure 3 is slidably installed on the top of the first slide bar guide rail 21 through a first support mechanism slider 23, and the second slide bar guide rails 22 are installed laterally opposite to each other, and a plurality of profile support beams 26 equidistantly and side by side are slidably installed on the second slide bar guide rails 22 through a second support mechanism slider 25, and a scissor-type telescopic frame 27 is arranged between the second slide bar guide rails 22, and the two side ends of the scissor-type telescopic frame 27 are slidably installed in the bottom slide groove of the profile support beam 26 through a hinge pin shaft 28, and telescopic cylinders 29 are hingedly installed on both sides of the bottom of the support mounting plate 24, and the telescopic ends of the telescopic cylinders 29 on both sides are respectively hinged to the two side ends of the scissor-type telescopic frame 27, and a positioning screw 210 is screwed on the top of the first support mechanism slider 23, and the bottom end of the positioning screw 210 abuts against the first slide bar guide rail 21 when being tightened;

[0040] When clamping the blank, first retract the bottom profile support beam 26, press one end of the blank against the flip plate 46 of the workpiece lifting and flipping mechanism 4, loosen the positioning screw 210 on the first support mechanism slider 23, and push the workpiece lifting and pressing structure 3 toward one side of the workpiece lifting and flipping mechanism 4 until the other end face of the blank presses against the pressing plate 36 of the workpiece lifting and pressing structure 3. A rivet structure can be appropriately provided on the surface of the pressing plate 36 to play an anti-slip role, so as to improve the clamping stability. After clamping, it can be positioned by locking 210.

[0041] The two telescopic cylinders 29 are connected to the external air source at the same time and are controlled synchronously. When the telescopic cylinders 29 on both sides are extended at the same time, the scissors-type telescopic frame 27 is extended in the length direction, and then the spacing between each profile support beam 26 is equally spaced and evenly placed at the bottom of the blank to support the blank; when the telescopic cylinders 29 on both sides are contracted synchronously, the scissors-type telescopic frame 27 is retracted in the length direction, and then the spacing between each profile support beam 26 is reduced and gathered to one side close to the telescopic cylinder 29, providing space for flipping the blank or clamping the column blank.

[0042] Further, such as Figure 5-6 As shown, the workpiece lifting and pressing structure 3 includes a gantry mounting frame 31, and right lifting slide rails 32 are arranged on the left and right sides of the gantry mounting frame 31. A right lifting mounting plate 34 is slidably installed on the right lifting slide rail 32 through a right lifting slider 33, and a pressing plate 36 is rotatably installed on the right lifting mounting plate 34 through a rotating bearing seat 35. A motor mounting seat 37 is arranged below the gantry mounting frame 31, and a right lifting motor 38 and a right lifting screw rod 39 are installed on the top of the motor mounting seat 37. The bottom ends of the right lifting motor 38 and the right lifting screw rod 39 are transmission-connected through a lifting synchronous belt assembly 310, and a right lifting nut seat 311 is screwed on the right lifting screw rod 39, and the right lifting nut seat 311 is fixedly installed on one side of the right lifting mounting plate 34;

[0043] Starting the right lifting motor 38 to rotate can synchronously drive the right lifting screw 39 to rotate through the lifting synchronous belt assembly 310, which can drive the right lifting nut seat 311 together with the right lifting mounting plate 34 and the rotating bearing seat 35 and the pressure plate 36 installed on the right lifting mounting plate 34 to move synchronously up and down. The pressure plate 36 structure includes a disc structure, and a rotating shaft is connected to the outer center of the disc structure. The rotating shaft is installed in the inner cavity of the rotating bearing seat 35 and is freely rotatably connected to the rotating bearing seat 35.

[0044] Further, such as Figure 7-8As shown, the workpiece lifting and flipping mechanism 4 includes a left lifting rail 41 installed on the left side of the main frame 1. A left lifting mounting plate 43 is slidably installed on the left lifting rail 41 through a left lifting slider 42, a reversing transmission box 44 is installed on the outer side of the left lifting mounting plate 43, a flip motor 45 is installed at the bottom of the reversing transmission box 44, and a flip plate 46 is installed on the inner side of the reversing transmission box 44. A left lifting motor seat 47 is installed on the left side of the main frame 1 and located between the left lifting rails 41, a left lifting motor 48 is installed at the bottom of the left lifting motor seat 47, and a left lifting screw 49 is transmission-connected to the top output end of the left lifting motor 48. A left lifting nut seat 410 is screwed to the outer wall of the left lifting screw 49, and the left lifting nut seat 410 is fixedly installed on one side of the left lifting mounting plate 43;

[0045] Starting the flip motor 45 drives the left lifting screw 49 to rotate, thereby driving the left lifting nut seat 410 and the reversing transmission box 44 and the flip motor 45 and flip plate 46 installed on the reversing transmission box 44 to move up and down synchronously. The flip plate 46 includes a disc structure, and a rotating shaft is connected to the outer center of the disc structure. The rotating shaft is located at one end of the inner cavity of the reversing transmission box 44 and is connected to the output shaft of the flip motor 45. The mutually perpendicular transmission connection can be achieved through two sets of bevel gears or a worm gear mechanism.

[0046] Further, such as Figure 9-10 As shown, the Y-axis moving mechanism 5 includes a Y-axis main beam 51 spanning the left and right sides of the main frame 1, and main beam support seats 52 are symmetrically arranged on the left and right sides of the bottom of the Y-axis main beam 51, and a Y-axis slide rail 54 is slidably installed at the bottom of the main beam support seat 52 through a Y-axis slider 53, and the Y-axis slide rail 54 is fixedly installed on the main frame 1, and a Y-axis transmission box 55 is installed on the main beam support seat 52, and a Y-axis motor 56 is installed on the top of the Y-axis transmission box 55, and a Y-axis driving gear 57 connected to the Y-axis motor 56 is arranged at the bottom of the Y-axis transmission box 55, and a Y-axis rack 58 is meshed with one side of the Y-axis driving gear 57, and the Y-axis rack 58 is fixedly installed on the main frame 1;

[0047] The Y-axis motors 56 on both sides are synchronously controlled. When started at the same time, the Y-axis motors 56 drive the Y-axis driving gear 57 at the bottom to rotate through the Y-axis transmission box 55. The inner cavity of the Y-axis transmission box 55 can realize the same-direction transmission through a pair of spur gears or a synchronous belt assembly. The Y-axis driving gear 57 is meshed with the Y-axis rack 58, and the Y-axis rack 58 is fixedly installed, which can drive the main beam support seats 52 on both sides and the Y-axis main beam 51 and the X-axis moving mechanism 6 installed on the Y-axis main beam 51 to move along the length direction of the Y-axis slide rail 54 in turn.

[0048] Further, such as Figure 11-12As shown, the X-axis moving mechanism 6 includes a pair of X-axis slide rails 61 fixedly mounted on the Y-axis moving mechanism 5, an X-axis mounting plate 63 is slidably mounted on the X-axis slide rail 61 through an X-axis slider 62, an X-axis transmission box 64 is mounted on the front side of the X-axis mounting plate 63, an X-axis motor 65 is mounted on the front side of the X-axis transmission box 64, an X-axis driving gear 66 connected to the X-axis motor 65 is arranged on the rear side of the X-axis transmission box 64, an X-axis rack 67 is meshed with the top of the X-axis driving gear 66, and the X-axis rack 67 is fixedly mounted on the Y-axis moving mechanism 5, a Z-axis lifting frame 68 is arranged on the front side of the X-axis mounting plate 63, and the Z-axis lifting frame 68 is arranged on the front side of the X-axis mounting plate 63. Z-axis lifting rails 69 are fixedly installed on both sides of the back of 8, and the Z-axis lifting rails 69 are slidably installed with the X-axis mounting plate 63 through the Z-axis lifting slider. A Z-axis motor 611 is installed on the top of the inner cavity of the Z-axis lifting frame 68, and a Z-axis lifting screw rod 612 is rotatably installed in the middle of the back of the Z-axis lifting frame 68. The top of the Z-axis lifting screw rod 612 is transmission-connected with the top output end of the Z-axis motor 611 through the Z-axis synchronous belt assembly 613. The outer wall of the Z-axis lifting screw rod 612 is screwed with a Z-axis lifting nut seat, and the Z-axis lifting nut seat is fixedly installed with the X-axis mounting plate 63. The engraving spindle 8 is fixedly installed with the bottom of the Z-axis lifting frame 68;

[0049] The X-axis motor 65 is started to rotate, and the X-axis motor 65 drives the rear X-axis driving gear 66 to rotate through the X-axis transmission box 64, and the X-axis driving gear 66 is meshed with the X-axis rack 67, and the X-axis rack 67 is fixedly installed on the Y-axis main beam 51. The internal structure of the X-axis transmission box 64 is similar to that of the Y-axis transmission box 55, so the rotation of the X-axis motor 65 can drive the X-axis mounting plate 63 and the Z-axis moving mechanism 7 and the engraving spindle 8 installed on the X-axis mounting plate 63 to move along the length direction of the X-axis slide rail 61;

[0050] Start the Z-axis motor 611 to drive the Z-axis lifting screw 612 to rotate through the Z-axis synchronous belt assembly 613. The Z-axis lifting screw 612 is screwed to the Z-axis lifting nut seat (not shown in the figure). The Z-axis lifting nut seat is fixedly installed with the X-axis mounting plate 63, and Z-axis lifting rails 69 are arranged on both sides of the Z-axis synchronous belt assembly 613. The Z-axis lifting rails 69 are slidably installed with the X-axis mounting plate 63 through the Z-axis lifting slider (not shown in the figure). Therefore, the rotation of the Z-axis motor 611 can drive the Z-axis lifting frame 68 to move up and down, thereby driving the Z-axis lifting frame 68 at the bottom of the Z-axis lifting frame 68 to move up and down;

[0051] A cylinder mounting plate 614 is mounted on the front side of the X-axis mounting plate 63, and an auxiliary lifting cylinder 610 is mounted on the cylinder mounting plate 614. The bottom telescopic end of the auxiliary lifting cylinder 610 is mounted and connected to the bottom outer wall of the Z-axis lifting frame (68). When the engraving spindle 8 is lifted, the auxiliary lifting cylinder 610 can bear part of the load and reduce the load of the Z-axis moving mechanism 7.

[0052] Further, such as Figure 1-2 As shown, a profile panel 9 is laid at the bottom of the main frame 1. The profile panel 9 is located at the front and rear sides of the telescopic support mechanism 2 and can be used to fill the empty space at the bottom of the main frame 1 to form a support platform for placing spare blanks or other tools and equipment.

[0053] A specific application of this embodiment is:

[0054] Embodiment 1:

[0055] For double-sided engraving processing: the engraving spindle 8 is installed under the rear side wall of the Z-axis lifting frame 68, and the tool installed at the output end of the engraving spindle 8 is installed longitudinally. At this time, the scissor-type telescopic frame 27 in the telescopic support mechanism 2 is first retracted, and the pressure plate 36 and the flip plate 46 are synchronously lifted to a certain height, and the thick plate-shaped blank to be engraved on both sides is clamped as described above. After the clamping is completed, the scissor-type telescopic frame 27 is unfolded, and the blank is driven to descend to the bottom surface and fit the top of the scissor-type telescopic frame 27 through the workpiece lifting and pressing structure 3 and the workpiece lifting and flipping mechanism 4, and the top surface can be started. After the top surface is processed, the blank is lifted again by the workpiece lifting and pressing structure 3 and the workpiece lifting and flipping mechanism 4, and then the scissors-type telescopic frame 27 is retracted, and then the scissors-type telescopic frame 27 is flipped 180 degrees with the top surface facing down by the workpiece lifting and pressing structure 3 and the workpiece lifting and flipping mechanism 4. After the flipping is completed, the scissors-type telescopic frame 27 is unfolded, and the blank is driven down to the top surface and fits with the top of the scissors-type telescopic frame 27 by the workpiece lifting and pressing structure 3 and the workpiece lifting and flipping mechanism 4, and the bottom surface processing can be carried out. The flipping and processing process can be completed automatically by the equipment without manual operation.

[0056] Embodiment 2:

[0057] For column engraving processing: the engraving spindle 8 is installed at the bottom of the Z-axis lifting frame 68, and the tool installed at the output end of the engraving spindle 8 is installed horizontally facing forward. At this time, the scissor-type telescopic frame 27 in the telescopic support mechanism 2 is first retracted, and the pressure plate 36 and the flip plate 46 are synchronously lifted to a certain height, and then the double-sided engraved columnar blank is clamped as described above, and it can be processed after clamping. Since the lateral size of the column sculpture is equivalent to the longitudinal size, it is not easy to have unilateral deviation, and the jitter is not obvious during processing. During processing, the workpiece lifting and pressing structure 3 and the workpiece lifting and flipping mechanism 4 may be required to drive the blank to rotate to cooperate with the spindle for processing, so in this embodiment, the scissor-type telescopic frame 27 is generally not used for auxiliary support.

[0058] In the description of the invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0059] In the invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the invention according to the specific circumstances.

[0060] Although embodiments of the invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A four-axis double-sided engraving machine, characterized in that: The invention comprises a main frame (1), wherein a telescopic support mechanism (2) is arranged at the bottom of the inner cavity of the main frame (1), the telescopic support mechanism (2) can slide left and right relative to the main frame (1), a workpiece lifting and pressing structure (3) is arranged at the top of the telescopic support mechanism (2), a workpiece lifting and flipping mechanism (4) is arranged on the left side of the main frame (1), a Y-axis moving mechanism (5) is arranged at the top of the main frame (1), an X-axis moving mechanism (6) is arranged at the top moving end of the Y-axis moving mechanism (5), a Z-axis moving mechanism (7) is arranged at the front moving end of the X-axis moving mechanism (6), and an engraving spindle (8) is installed below the front lifting end of the Z-axis moving mechanism (7); The telescopic support mechanism (2) comprises a pair of first slide bar guide rails (21) and a pair of second slide bar guide rails (22), the first slide bar guide rails (21) being installed upwards, a support mounting plate (24) for mounting the workpiece lifting and pressing structure (3) being slidably mounted on the top of the first slide bar guide rails (21) through a first support mechanism slider (23), the second slide bar guide rails (22) being installed laterally opposite to each other, a plurality of profile support beams (26) equidistantly arranged and spaced side by side being slidably mounted on the second slide bar guide rails (22) through a second support mechanism slider (25), a scissor-type telescopic frame (27) being arranged between the second slide bar guide rails (22), both side ends of the scissor-type telescopic frame (27) being slidably mounted in the bottom slide groove of the profile support beam (26) through a hinge pin shaft (28), telescopic cylinders (29) being hingedly mounted on both sides of the bottom of the support mounting plate (24), the telescopic ends of the telescopic cylinders (29) on both sides being hingedly connected to both side ends of the scissor-type telescopic frame (27); A positioning screw (210) is screwed onto the top of the first support mechanism slider (23); when the bottom end of the positioning screw (210) is tightened, it abuts against the first slide bar guide rail (21); The workpiece lifting and pressing structure (3) comprises a gantry mounting frame (31), the left and right sides of the gantry mounting frame (31) are provided with right lifting slide rails (32), a right lifting mounting plate (34) is slidably mounted on the right lifting slide rail (32) via a right lifting slider (33), a pressing plate (36) is rotatably mounted on the right lifting mounting plate (34) via a rotating bearing seat (35), a motor mounting seat (37) is provided below the gantry mounting frame (31), a right lifting motor (38) and a right lifting screw rod (39) are mounted on the top of the motor mounting seat (37), the bottom ends of the right lifting motor (38) and the right lifting screw rod (39) are transmission-connected via a lifting synchronous belt assembly (310), a right lifting nut seat (311) is screwed on the right lifting screw rod (39), and the right lifting nut seat (311) is fixedly mounted on one side of the right lifting mounting plate (34); The workpiece lifting and flipping mechanism (4) comprises a left lifting rail (41) mounted on the left side of the main frame (1); a left lifting mounting plate (43) is slidably mounted on the left lifting rail (41) via a left lifting slider (42); a reversing transmission box (44) is mounted on the outer side of the left lifting mounting plate (43); a flipping motor (45) is mounted on the bottom of the reversing transmission box (44); a flipping plate (46) is transmission-mounted on the inner side of the reversing transmission box (44); a left lifting motor seat (47) is mounted on the left side of the main frame (1) and between the left lifting rail (41); a left lifting motor (48) is mounted on the bottom of the left lifting motor seat (47); a top output end of the left lifting motor (48) is transmission-connected to a left lifting screw rod (49); an outer wall of the left lifting screw rod (49) is threadedly connected to a left lifting nut seat (410); and the left lifting nut seat (410) is fixedly mounted to one side of the left lifting mounting plate (43); The Y-axis moving mechanism (5) comprises a Y-axis main beam (51) spanning the left and right sides of the main frame (1); main beam support seats (52) are symmetrically arranged on the left and right sides of the bottom of the Y-axis main beam (51); a Y-axis slide rail (54) is slidably mounted on the bottom of the main beam support seat (52) via a Y-axis slider (53); the Y-axis slide rail (54) is fixedly mounted on the main frame (1); a Y-axis transmission box (55) is mounted on the main beam support seat (52); a Y-axis motor (56) is mounted on the top of the Y-axis transmission box (55); a Y-axis driving gear (57) drivingly connected to the Y-axis motor (56) is arranged at the bottom of the Y-axis transmission box (55); a Y-axis rack (58) is meshed with one side of the Y-axis driving gear (57); and the Y-axis rack (58) is fixedly mounted on the main frame (1); The X-axis moving mechanism (6) comprises a pair of X-axis slide rails (61) fixedly mounted on the Y-axis moving mechanism (5); an X-axis mounting plate (63) is slidably mounted on the X-axis slide rails (61) via an X-axis slider (62); an X-axis transmission box (64) is mounted on the front side of the X-axis mounting plate (63); an X-axis motor (65) is mounted on the front side of the X-axis transmission box (64); an X-axis driving gear (66) connected to the X-axis motor (65) is disposed on the rear side of the X-axis transmission box (64); an X-axis rack (67) is meshed with the top of the X-axis driving gear (66); the X-axis rack (67) is fixedly mounted on the Y-axis moving mechanism (5); a Z-axis lifting frame (68) is disposed on the front side of the X-axis mounting plate (63); the Z-axis lifting frame Z-axis lifting rails (69) are fixedly installed on both sides of the back side of (68), and the Z-axis lifting rails (69) are slidably installed with the X-axis mounting plate (63) through the Z-axis lifting slider, and a Z-axis motor (611) is installed at the top of the inner cavity of the Z-axis lifting frame (68), and a Z-axis lifting screw rod (612) is rotatably installed in the middle of the back side of the Z-axis lifting frame (68), and the top of the Z-axis lifting screw rod (612) is transmission-connected to the top output end of the Z-axis motor (611) through a Z-axis synchronous belt assembly (613), and a Z-axis lifting nut seat is screwed on the outer wall of the Z-axis lifting screw rod (612), and the Z-axis lifting nut seat is fixedly installed with the X-axis mounting plate (63), and the engraving spindle (8) is fixedly installed at the bottom of the Z-axis lifting frame (68); A cylinder mounting plate (614) is mounted on the front side of the X-axis mounting plate (63), an auxiliary lifting cylinder (610) is mounted on the cylinder mounting plate (614), and a bottom telescopic end of the auxiliary lifting cylinder (610) is mounted and connected to the bottom outer side wall of the Z-axis lifting frame (68); The bottom of the main frame (1) is paved with a profile panel (9), and the profile panel (9) is located at the front and rear sides of the telescopic support mechanism (2).

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