Multi-surface colored laser engraving machine

Abstract

The invention discloses a multi-surface colored laser carving machine, which relates to the technical field of laser carving machines, and comprises a workbench, a control console, a control system mounted in the control console, a computer placed on the control console, three brackets mounted on the upper surface of the control console, and three laser carving heads mounted on the three brackets, a rack is connected to the center of the bottom of the workbench, a belt conveyor is embedded in the upper surface of the workbench, and guide assemblies are installed on the edges of the left side and the right side of the upper surface of the workbench. Through the arrangement of the turn-over assembly, the effects of automatic clamping and automatic turn-over of a workpiece can be achieved; by arranging the guide assembly and the arc-shaped supporting plate, the effects that three faces of workpieces can be machined at most, automatic feeding and discharging of the workpieces are achieved, the multi-face machining step of the workpieces is continuously carried out, the three workpieces can be machined at the same time through the three laser carving heads, and the machining speed of the workpieces is greatly increased.

Description

Technical Field

[0001] The present invention relates to the technical field of laser engraving machines, and particularly to a multi-sided color laser engraving machine. Background Art

[0002] A color laser engraving machine is a device that can achieve color marking or engraving effects on the surface of an object. A color laser engraving machine usually relies on laser technology. A high-energy density laser beam is generated by a laser and irradiated onto the surface of the workpiece, causing physical or chemical changes in the workpiece material to form engraving or marking. Currently, a color laser engraving machine usually consists of a workbench, a computer, a control system, a bracket, and a laser engraving head installed on the bracket. The laser engraving head includes a laser and a lens. The laser beam generated by the laser exits from the lens, causing the laser beam to focus on the surface of the material to be processed.

[0003] During the processing of traditional color laser engraving machines, the workpiece is manually placed at a specified position on the workbench by an operator, and then the laser beam is emitted from the laser engraving head above to process the surface of the workpiece. For workpieces with multi-sided marking or engraving, after single-sided processing, the workpiece needs to be manually flipped over by an operator for multi-sided processing. During this process, it completely relies on manual flipping, resulting in problems such as low automation and excessive manual labor burden. In addition, the loading and unloading of the workpiece are also manually operated, and continuous processing cannot be achieved, resulting in too low processing efficiency of the workpiece. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-sided color laser engraving machine to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A multi-sided color laser engraving machine, including a workbench, a console, a control system installed inside the console, a computer placed on the console, three brackets installed on the upper surface of the console, and three laser engraving heads installed on the three brackets. It is characterized in that: a frame is connected to the center of the bottom of the workbench, a belt conveyor is embedded and installed on the upper surface of the workbench, guiding components are installed at both the left and right edges of the upper surface of the workbench. The number of guiding components is four, and two of them are arranged in a group and symmetrically arranged left and right relative to the workbench. A limiting component is commonly installed on the two guiding components of the same group. An arc-shaped support plate is installed on the upper surface of the workbench between the two groups of guiding components. Fixed frames are installed on both the left and right sides of the workbench, and turning components are installed on the sides of the two fixed frames close to each other. The guiding component includes a guiding seat installed on the upper surface of the workbench. A chute is opened on one side of the guiding seat. A slider is arranged inside the chute. A ball is embedded in the side wall of the slider. A top screw hole is penetrated through the guiding seat above the slider, and a top screw is penetrated through the top screw hole. U-shaped grooves are opened on both the upper surface of the slider and the guiding seat.

[0006] Preferably, the cross section of the guide seat is a right-angled trapezoid, the slider is slidably connected to the guide seat via a slide groove, and the two sliders in the same group are in contact with the left and right side walls of the workpiece respectively via ball bearings.

[0007] Preferably, a rotating shaft is provided through the middle of the frame, an upper gear is sleeved on the outer side of the rotating shaft inside the frame, a lower gear is meshingly connected below the upper gear, and a driving motor is installed inside the frame on one side of the lower gear.

[0008] Preferably, the limit assembly includes a first fixed block installed on the upper surface of the guide seat, a second fixed block installed on the upper surface of the guide seat at the rear side of the first fixed block, a limit plate is inserted between the first fixed block and the second fixed block, screw holes are opened at the left and right edges of the limit plate, a screw is arranged inside the screw hole, a first bearing is connected between the screw and the first fixed block and the second fixed block, the front end of the screw extends from the front side of the first fixed block and is connected to a knob, a movable plate is connected to the bottom of the limit plate, a pin is arranged between the movable plate and the limit plate, the rear edge of the upper surface of the limit plate is connected to a mounting frame, and the first electric push rod is connected between the mounting frame and the rear side wall of the movable plate.

[0009] Preferably, the number of the first fixed block, the second fixed block and the screw is four, and two are grouped together and respectively installed on two guide seats in the same group. The screw passes through the limit plate through the screw hole and forms a threaded connection with the limit plate. The two sides of the limit plate are respectively slidably connected with the two guide seats in the same group.

[0010] Preferably, the movable plate is rotatably connected to the limit plate via a distribution shaft, and the upper and lower ends of the first electric push rod are rotatably connected to the mounting frame and the movable plate respectively.

[0011] Preferably, the fixed frame is integrally connected with an L-shaped frame on one side close to the workbench, and the fixed frame and the L-shaped frame are jointly provided with a central axis, and a second bearing is connected between the central axis, the fixed frame and the L-shaped frame, and an upper transmission wheel is installed on the outer side of the rotating shaft between the fixed frame and the L-shaped frame, and a lower transmission wheel is installed on the rotating shaft below the upper transmission wheel, and a transmission belt is connected between the upper transmission wheel and the lower transmission wheel for transmission. Two ends of the rotating shaft extend from the left and right sides of the frame and are connected with a third bearing between the two fixed frames, and the two fixed frames are respectively connected with cross beams on the left and right sides of the frame, and the longitudinal section of the connection between the fixed frame and the L-shaped frame forms a "丩" shape, and the central axis is rotatably connected to the rotating shaft via the upper transmission wheel and the lower transmission wheel, and the central axis is rotatably connected to the fixed frame and the L-shaped frame via the second bearing.

[0012] Preferably, support rods are connected to the four corners of the bottom of the arc-shaped support plate, the arc-shaped support plate is installed above the workbench via the support rods, and the arc-shaped support plate is coaxially arranged with the central axis.

[0013] Preferably, the turning component includes a turning frame installed outside the central axis. The turning frame is cross-shaped, and four material taking seats are respectively connected to the four outer side walls of the turning frame. A groove is formed on one side of the material taking seat, and a second electric push rod is installed inside the material taking seat on one side of the groove. The telescopic end of the second electric push rod is connected with a chuck.

[0014] Preferably, the turning frame is in contact with the side wall of the workbench, and the turning frame connected to the central axis rotates relative to the workbench. The length of the turning frame corresponds to the distance from the central axis to the front and rear groups of U-shaped grooves. When the second electric push rod extends, the chuck is movably inserted into the U-shaped groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this multi-sided color laser engraving machine, by setting the turning component, after the workpiece is processed by the frontmost laser engraving head, the second electric push rods in the turning components on both sides of the workpiece extend. The second electric push rods push the chucks to extend out of the grooves. The chucks pass through the guide seats and sliders through the U-shaped grooves, so that the two chucks clamp the left and right sides of the workpiece. Then, the driving motor drives the lower gear to rotate, the lower gear drives the upper gear to rotate, the upper gear drives the rotating shaft to rotate, and the rotating shaft drives the two central axes on both sides of the workbench to rotate through the lower transmission wheel and the upper transmission wheel. The two central axes respectively drive the two turning frames to rotate, and the turning frames drive the chucks and the clamped workpiece to rotate 90° around the central axis, so that the workpiece is turned over and continues to be processed, realizing the effects of automatically clamping and automatically turning over the workpiece.

[0016] 2. In this multi-sided color laser engraving machine, by setting the guiding component and the arc-shaped supporting plate, the workpiece is placed on the belt conveyor and conveyed backward. The hypotenuse of the front guiding seat guides the workpiece so that it moves to between the two sliders along with the belt conveyor, enabling the workpiece to automatically enter the first processing station. After the first side is processed, the turning component clamps and drives the workpiece to turn over and move to the top of the arc-shaped supporting plate. At this time, the workpiece is in the second processing station. After the second side is processed, the turning component continues to drive the workpiece to turn over and move to the third processing station. After the third side is processed, the workpiece is discharged along with the belt conveyor. This laser engraving machine can process the workpiece on at most three sides, and realizes the effects of automatically loading and unloading the workpiece. The multi-sided processing steps of the workpiece are carried out continuously, and the three laser engraving heads can process three workpieces simultaneously, greatly accelerating the processing speed of the workpiece.

[0017] 3. This multi-sided color laser engraving machine, by setting a limit component and a guide seat, when the workpiece is being processed on the first side and the third side, it is located between two sliders. The sliders in the guide seat laterally limit the left and right sides of the workpiece, and the movable plate longitudinally limits the workpiece at the rear side of the workpiece, ensuring precise processing of the workpiece. After the three-sided processing is completed, the first electric push rod contracts to pull the movable plate to rotate backward relative to the limit plate around the pin shaft, canceling the limiting effect of the movable plate on the workpiece, and enabling the workpiece to move with the belt conveyor, achieving the effect of longitudinally limiting the workpiece and having a limit opening and closing function.

[0018] 4. This multi-sided color laser engraving machine, by setting sliders, a first fixed block, a second fixed block and a screw rod, by rotating the setscrew to make it move upward in the setscrew hole, canceling the clamping effect on the slider, enabling the slider to slide left and right in the chute, facilitating the adjustment of the distance between two sliders in the same group according to the actual width of the workpiece. By rotating the knob, the knob drives the screw rod to rotate, and the screw rod drives the limit plate to move back and forth through the screw hole, facilitating the adjustment of the distance from the limit plate to the center of the U-shaped groove according to the actual length of the workpiece, enabling the guide assembly to be applicable to workpieces of different widths and different lengths, and increasing the application range of the device. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the front sectional view of the present invention; Figure 3 is the structural schematic diagram of the workbench of the present invention; Figure 4 is the partial structural schematic diagram of the present invention; Figure 5 is the structural schematic diagram of the turning-over assembly of the present invention; Figure 6 is the structural schematic diagram of the guide assembly and the limit assembly of the present invention; Figure 7 of the present invention Figure 2 is the enlarged schematic diagram of the structure of part A in; Figure 8 is the side sectional view of the limit plate of the present invention.

[0020] In the figure: 1, workbench; 2, frame; 21, rotating shaft; 22, upper gear; 23, lower gear; 24, driving motor; 3, belt conveyor; 4, guiding assembly; 41, guiding seat; 42, sliding groove; 43, slider; 44, ball; 45, set screw hole; 46, set screw; 47, U-shaped groove; 5, limiting assembly; 51, first fixing block; 52, second fixing block; 53, limiting plate; 54, screw hole; 55, screw; 56, first bearing; 57, knob; 58, movable plate; 59, pin shaft; 510, mounting bracket; 511, first electric push rod; 6, arc-shaped support plate; 61, support rod; 7, turning-over assembly; 71, turning-over frame; 72, material taking seat; 73, groove; 74, chuck; 75, second electric push rod; 8, fixing frame; 81, L-shaped frame; 82, middle shaft; 83, second bearing; 84, upper driving wheel; 85, lower driving wheel; 86, transmission belt; 87, third bearing; 88, cross beam; 9, control console; 91, control system; 92, computer; 93, bracket; 94, laser engraving head. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] As Figures 1 to 8As shown in the figure, the multi-sided color laser engraving machine of this embodiment includes a workbench 1, a control console 9, a control system 91 installed inside the control console 9, a computer 92 placed on the control console 9, three brackets 93 installed on the upper surface of the control console 9, and three laser engraving heads 94 installed on the three brackets 93. The three laser engraving heads 94 are respectively used for laser engraving three sides of the workpiece. The three laser engraving heads 94 are electrically connected to the control system 91 through circuits. The center of the bottom of the workbench 1 is connected to a frame 2. An embedded belt conveyor 3 is installed on the upper surface of the workbench 1, which is used to drive the workpiece to move backward, facilitating the loading and unloading of the workpiece. Guide assemblies 4 are installed on the left and right edges of the upper surface of the workbench 1, which are used to laterally limit the workpiece and also to guide the workpiece to the working position. The number of the guide assemblies 4 is four, and two of them are in a group and are symmetrically arranged left and right with respect to the workbench 1. A limiting assembly 5 is commonly installed on the two guide assemblies 4 in the same group, which is used to longitudinally limit the workpiece. An arc-shaped support plate 6 is installed on the upper surface of the workbench 1 between the two groups of guide assemblies 4. Fixed frames 8 are installed on both sides of the workbench 1. Flipping assemblies 7 are installed on the sides of the two fixed frames 8 close to each other, which are used to drive the workpiece to flip and continuously drive the workpiece to perform three-sided laser engraving processing in sequence. The guide assembly 4 includes a guide seat 41 installed on the upper surface of the workbench 1. A chute 42 is opened on one side of the guide seat 41. A slider 43 is arranged inside the chute 42. The slider 43 is in a rectangular block shape. A ball 44 is embedded in the side wall of the slider 43. The slider 43 contacts the workpiece through the ball 44. The ball 44 is rotatably connected to the slider 43, and the number of the balls 44 is several and they are arranged at equal intervals on the side wall of the slider 43. A set screw hole 45 is penetrated through the guide seat 41 above the slider 43. A set screw 46 is penetrated through the set screw hole 45. The set screw 46 is screwed into the set screw hole 45, and the bottom of the set screw 46 can squeeze the slider 43 to position the position of the slider 43 in the guide seat 41. U-shaped grooves 47 are opened on the upper surfaces of the slider 43 and the guide seat 41, providing an operating space for the clamping head 74 to pass through the guide seat 41 and the slider 43 to clamp the workpiece. The two sliders 43 and the movable plate 58 at the front form a U-shaped limiting area, which is the first processing station of the workpiece. The top of the arc-shaped support plate 6 is the second processing station. The two sliders 43 and the rear movable plate 58 at the rear also form a U-shaped limiting area, which is the third processing station. These three processing stations correspond to the positions of the three laser engraving heads 94 above respectively.

[0025] Specifically, the cross-section of the guiding seat 41 is a right trapezoid. When the workpiece is placed on the belt conveyor 3 and conveyed backward, the hypotenuse of the front guiding seat 41 guides the workpiece so that it moves to between the two sliders 43 along with the belt conveyor 3. The sliders 43 are slidably connected to the guiding seat 41 through the sliding grooves 42. The two sliders 43 in the same group are respectively in contact with the left and right side walls of the workpiece through the balls 44. The balls 44 are used to reduce the friction between the sliders 43 and the workpiece. In actual application, the gap between adjacent balls 44 is reduced, and it is necessary to avoid the workpiece corner from getting stuck.

[0026] Further, a rotating shaft 21 is disposed through the middle of the frame 2. The rotating shaft 21 penetrates through the frame 2 and rotates relative to the frame 2. An upper gear 22 is sleeved outside the rotating shaft 21 inside the frame 2. A lower gear 23 is meshed and connected below the upper gear 22. A driving motor 24 is installed inside the frame 2 on one side of the lower gear 23. The driving motor 24 is installed inside the frame 2, and the torque of each rotation of the driving motor 24 is 90°. The turning-over assembly 7 is maintained to clamp the workpiece to turn it over and move along a quarter of an arc path each time.

[0027] Further, the limiting assembly 5 includes a first fixing block 51 installed on the upper surface of the guiding seat 41. A second fixing block 52 is installed on the upper surface of the guiding seat 41 behind the first fixing block 51. Both the first fixing block 51 and the second fixing block 52 are rectangular blocks. A limiting plate 53 is inserted between the first fixing block 51 and the second fixing block 52. Through holes 54 are formed through the left and right side edges of the limiting plate 53. A screw rod 55 is disposed through the inside of the through holes 54. The outer diameter of the screw rod 55 is adapted to the inner diameter of the through holes 54. The screw rod 55 is connected to the first fixing block 51 and the second fixing block 52 through first bearings 56 respectively. The screw rod 55 is rotatably connected to the first fixing block 51 and the second fixing block 52 through the first bearings 56. The front end of the screw rod 55 extends out from the front side of the first fixing block 51 and is connected with a knob 57. A movable plate 58 is connected to the bottom of the limiting plate 53. A pin shaft 59 is disposed through the limiting plate 53 and the movable plate 58. An installation frame 510 for installing a first electric push rod 511 is connected to the rear edge of the upper surface of the limiting plate 53. A first electric push rod 511 is connected between the installation frame 510 and the rear side wall of the movable plate 58.

[0028] Furthermore, the number of the first fixing block 51, the second fixing block 52 and the screw 55 is four, and two are grouped together and respectively installed on the two guide seats 41 of the same group. The left and right sides of the limit plate 53 are respectively inserted between the two first fixing blocks 51 and the second fixing blocks 52 of the same group, and the bottom of the limit plate 53 contacts the upper surface of the guide seat 41. The screw 55 passes through the limit plate 53 through the screw hole 54 and forms a threaded connection with the limit plate 53. The two sides of the limit plate 53 are respectively slidably connected with the two guide seats 41 of the same group. The limit plate 53 is driven to move forward and backward by the screw 55, which is convenient for adjusting the distance from the limit plate 53 to the center of the U-shaped groove 47 according to the actual length of the workpiece, so that the guide assembly 4 can be suitable for workpieces of different lengths.

[0029] Furthermore, the movable plate 58 is rotatably connected to the limit plate 53 via the pin shaft 59, and the movable plate 58 is inserted between the two sliders 43 of the same group to longitudinally limit the workpiece. The upper and lower ends of the first electric push rod 511 are rotatably connected with the mounting frame 510 and the movable plate 58 respectively. The first electric push rod 511 passes through the limit plate 53, and is used to push the movable plate 58 to rotate around the pin shaft 59 relative to the limit plate 53, thereby achieving the effect of longitudinally limiting the workpiece and having the limit opening and closing function, which is convenient for unloading the workpiece after laser engraving on the third side.

[0030] Furthermore, an L-shaped frame 81 is integrally connected to one side of the fixed frame 8 close to the workbench 1, which is used to support the central axis 82 to maintain the stability of the installation of the flip assembly 7. The fixed frame 8 and the L-shaped frame 81 are jointly provided with a central axis 82, and a second bearing 83 is connected between the central axis 82 and the fixed frame 8 and the L-shaped frame 81. An upper transmission wheel 84 is installed on the outer side of the rotating shaft 21 between the fixed frame 8 and the L-shaped frame 81, and a lower transmission wheel 85 is installed on the rotating shaft 21 below the upper transmission wheel 84. A transmission belt 86 is connected between the upper transmission wheel 84 and the lower transmission wheel 85, and a transmission is formed between the upper transmission wheel 84 and the lower transmission wheel 85 through the transmission belt 86. The two ends of the rotating shaft 21 extend from the left and right sides of the frame 2 and are connected with the third bearing 87 between the two fixed frames 8. The rotating shaft 21 is rotatably connected to the fixed frame 8 via the third bearing 87. The two fixed frames 8 are respectively connected to the left and right sides of the frame 2 with a cross beam 88. The fixed frame 8 is connected to the L-shaped frame 81 to form a 丩-shaped longitudinal section. The central axis 82 is rotatably connected to the rotating shaft 21 via the upper transmission wheel 84 and the lower transmission wheel 85. The central axis 82 is rotatably connected to the fixed frame 8 and the L-shaped frame 81 via the second bearing 83. The drive is transmitted through the rotating shaft 21, so that the two central axes 82 on both sides of the workbench 1 rotate synchronously, thereby maintaining the synchronization of the two flipping assemblies 7 on both sides of the workbench 1.

[0031] Furthermore, support rods 61 are connected to the four corners at the bottom of the arc-shaped support plate 6. The arc-shaped support plate 6 is installed above the workbench 1 via the support rods 61. The arc-shaped support plate 6 is coaxially arranged with the central axis 82. The arc-shaped support plate 6 is used to support the bottom of the workpiece when the turning assembly 7 clamps and rotates the workpiece, maintaining the stability of the turning of the workpiece clamped by the turning assembly 7.

[0032] Furthermore, the turning assembly 7 includes a turning frame 71 installed outside the central axis 82. The turning frame 71 is in a cross shape. The turning frame 71 rotates following the central axis 82. Four material taking seats 72 are respectively connected to the four outer side walls of the turning frame 71. A groove 73 is formed on one side of the material taking seat 72. When the chuck 74 does not clamp the workpiece, the second electric push rod 75 contracts, driving the chuck 74 to retract into the groove 73. A second electric push rod 75 is installed inside the material taking seat 72 on one side of the groove 73. The telescopic end of the second electric push rod 75 is connected to the chuck 74. When the turning frame 71 drives the chuck 74 to rotate, the positions of the chuck 74 and the U-shaped grooves 47 in the front and rear groups of guide seats 41 correspond. The two groups of guide seats 41 are symmetrically arranged front and rear relative to the workbench 1. Since the turning assembly 7 needs to clamp the workpiece and move backward in an arc, to prevent the workpiece from colliding with the rear movable plate 58 during the arc movement, it is necessary to keep the rear movable plate 58 in a horizontal state when the chuck 74 clamps and turns the workpiece. Before the chuck 74 contracts, the first electric push rod 511 pushes the movable plate 58 into a vertical state.

[0033] Furthermore, the turning frame 71 is in contact with the side wall of the workbench 1, and the turning frame 71 is connected to the central axis 82 and rotates relative to the workbench 1. The length of the turning frame 71 corresponds to the distance from the central axis 82 to the U-shaped grooves 47 in the front and rear groups. When the second electric push rod 75 extends, the chuck 74 is movably inserted into the U-shaped groove 47. The turning frame 71 drives the chuck 74 and the clamped workpiece to rotate 90° around the central axis 82, enabling the workpiece to be turned over and continue processing, achieving the effects of automatically clamping and automatically turning over the workpiece.

[0034] The usage method of this embodiment is as follows: When the user actually uses the color laser engraving machine to process plastic workpieces, first place the plastic workpiece on the belt conveyor 3 from the front side of the workbench 1. The belt conveyor 3 drives the workpiece to move backward. The hypotenuse of the front guide seat 41 guides the workpiece to move with the belt conveyor 3 between the two sliders 43. The left and right side walls of the workpiece contact the balls 44, and the two side sliders 43 limit the workpiece laterally. The workpiece moves backward between the two sliders 43 until its rear side wall contacts the movable plate 58. The movable plate 58 limits the workpiece longitudinally, so that the workpiece is statically placed at the first processing station. Then, the frontmost laser engraving head 94 engraves the first surface of the workpiece. After the first surface engraving is completed, the second electric push rod 75 in the frontmost material taking seat 72 extends. The second electric push rod 75 pushes the chuck 74 to extend from the groove 73. The chuck 74 passes through the guide seat 41 and the slider 43 through the U-shaped groove 47, so that the left and right chucks 74 clamp both sides of the workpiece. Then, the driving motor 24 drives the lower gear 23 to rotate. The lower gear 23 drives the upper gear 22 to rotate. The upper gear 22 drives the rotating shaft 21 to rotate. The rotating shaft 21 drives the two middle shafts 82 on both sides of the workbench 1 to rotate through the lower transmission wheel 85 and the upper transmission wheel 84. The two middle shafts 82 drive the two turnover frames 71 to rotate respectively. The turnover frame 71 drives the chuck 74 and the clamped workpiece to rotate 90° around the middle shaft 82. During the transfer process of the workpiece, it is guided by the arc-shaped support plate 6 to maintain the stability of the chuck 74 clamping and transferring the workpiece. The chuck 74 clamps the workpiece and turns it over and transfers it to the top of the arc-shaped support plate 6. At this time, the workpiece is at the second processing station. Then, the middle laser engraving head 94 engraves the second surface of the workpiece. After the second surface engraving is completed, the driving motor 24 drives the turnover frame 71 to continue rotating 90°, so that the chuck 74 clamps the workpiece and turns it over and moves it between the two rear sliders 43. The workpiece moves backward with the belt conveyor 3 until it is limited by the movable plate 58. At this time, the workpiece is at the third processing station. Then, the rearmost laser engraving head 94 emits a laser beam to engrave the third surface of the workpiece. After the processing is completed, the first electric push rod 511 contracts to pull the movable plate 58 to rotate backward relative to the limit plate 53 around the pin shaft 59, canceling the limiting effect of the movable plate 58 on the workpiece, so that the workpiece moves backward with the belt conveyor 3 for blanking. When processing workpieces of different sizes, rotate the set screw 46 to move it upward in the set screw hole 45, canceling the clamping effect on the slider 43, so that the slider 43 slides left and right in the chute 42, and adjust the distance between the two sliders 43 in the same group according to the actual width of the workpiece. After the adjustment is completed, rotate the set screw 46 in the opposite direction to move it downward in the set screw hole 45 to squeeze the slider 43. By rotating the knob 57, the knob 57 drives the screw 55 to rotate. The screw 55 drives the limit plate 53 to move back and forth through the screw hole 54, and adjust the distance from the limit plate 53 to the center of the U-shaped groove 47 according to the actual length of the workpiece.

[0035] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-sided color laser engraving machine, comprising a workbench (1), a control console (9), a control system (91) installed inside the control console (9), a computer (92) placed on the control console (9), three brackets (93) installed on the upper surface of the control console (9), and three laser engraving heads (94) installed on the three brackets (93), characterized in that: At the center of the bottom of the workbench (1), a frame (2) is connected. On the upper surface of the workbench (1), a belt conveyor (3) is embedded and installed. On the left and right sides of the upper surface of the workbench (1), guiding components (4) are installed. The number of the guiding components (4) is four, and two of them are in a group and are symmetrically arranged left and right with respect to the workbench (1). A limiting component (5) is installed on the two guiding components (4) in the same group together. An arc-shaped support plate (6) is installed on the upper surface of the workbench (1) between the two groups of guiding components (4). On both the left and right sides of the workbench (1), fixing frames (8) are installed. On the side of the two fixing frames (8) close to each other, turning components (7) are installed; The guiding component (4) includes a guiding seat (41) installed on the upper surface of the workbench (1). A sliding groove (42) is opened on one side of the guiding seat (41). A slider (43) is arranged inside the sliding groove (42). A ball (44) is embedded in the side wall of the slider (43). A set screw (46) hole is penetrated through the upper surface of the guiding seat (41) above the slider (43). A set screw (46) is penetrated through the set screw (46) hole. U-shaped grooves (47) are opened on both the upper surface of the slider (43) and the guiding seat (41).

2. The multi-faceted color laser engraving machine according to claim 1, wherein: The cross-section of the guiding seat (41) is in the shape of a right trapezoid. The slider (43) is slidably connected with the guiding seat (41) through the sliding groove (42). The two sliders (43) in the same group are respectively in contact with the left and right side walls of the workpiece through the balls (44).

3. The multi-faceted color laser engraving machine according to claim 1, characterized in that: A rotating shaft (21) is penetrated through the middle of the frame (2). An upper gear (22) is sleeved outside the rotating shaft (21) inside the frame (2). A lower gear (23) is meshed and connected below the upper gear (22). A driving motor (24) is installed inside the frame (2) on one side of the lower gear (23).

4. The multi-faceted color laser engraving machine according to claim 1, wherein: The limiting component (5) includes a first fixing block (51) installed on the upper surface of the guiding seat (41). A second fixing block (52) is installed on the upper surface of the guiding seat (41) behind the first fixing block (51). A limiting plate (53) is inserted between the first fixing block (51) and the second fixing block (52). Screw holes (54) are penetrated through the left and right side edges of the limiting plate (53). A screw rod (55) is penetrated through the screw holes (54). First bearings (56) are connected between the screw rod (55) and the first fixing block (51) and the second fixing block (52). The front end of the screw rod (55) extends out from the front side of the first fixing block (51) and is connected with a knob (57). A movable plate (58) is connected to the bottom of the limiting plate (53). A pin shaft (59) is penetrated through the movable plate (58) and the limiting plate (53). An installation frame (510) is connected to the rear edge of the upper surface of the limiting plate (53). A first electric push rod (511) is connected between the installation frame (510) and the rear side wall of the movable plate (58).

5. The multi-faceted color laser engraving machine according to claim 4, wherein: The number of the first fixing block (51), the second fixing block (52) and the screw rod (55) is four, and two of them are respectively mounted on two guide seats (41) in the same group. The screw rod (55) passes through the limit plate (53) through the screw hole (54) and is threadedly connected to the limit plate (53). Both sides of the limit plate (53) are respectively slidably connected to the two guide seats (41) in the same group.

6. The multi-faceted color laser engraving machine according to claim 4, wherein: The movable plate (58) is rotatably connected to the limit plate (53) via the distribution shaft (59), and the upper and lower ends of the first electric push rod (511) are rotatably connected to the mounting frame (510) and the movable plate (58) respectively.

7. The multi-faceted color laser engraving machine according to claim 3, characterized in that: An L-shaped frame (81) is integrally connected to a side of the fixed frame (8) close to the workbench (1); a central axis (82) is provided through the fixed frame (8) and the L-shaped frame (81); a second bearing (83) is connected between the central axis (82) and the fixed frame (8) and the L-shaped frame (81); an upper transmission wheel (84) is installed on the outer side of the rotating shaft (21) between the fixed frame (8) and the L-shaped frame (81); a lower transmission wheel (85) is installed on the rotating shaft (21) below the upper transmission wheel (84); and a transmission wheel (84) and a lower transmission wheel (85) are connected between the upper transmission wheel (84) and the lower transmission wheel (85). The rotating shaft (21) is rotatably connected to a transmission belt (86), two ends of the rotating shaft (21) extend from the left and right sides of the frame (2) and are connected to the two fixed frames (8) with a third bearing (87), the two fixed frames (8) are respectively connected to the left and right sides of the frame (2) with a crossbeam (88), the fixed frame (8) and the L-shaped frame (81) are connected to form a 丩-shaped longitudinal section, the middle shaft (82) is rotatably connected to the rotating shaft (21) via an upper transmission wheel (84) and a lower transmission wheel (85), and the middle shaft (82) is rotatably connected to the fixed frame (8) and the L-shaped frame (81) via a second bearing (83).

8. The multi-faceted color laser engraving machine according to claim 7, characterized in that: The four corners of the bottom of the arc-shaped support plate (6) are connected to support rods (61), the arc-shaped support plate (6) is installed above the workbench (1) via the support rods (61), and the arc-shaped support plate (6) is coaxially arranged with the central axis (82).

9. The multi-faceted color laser engraving machine according to claim 7, characterized in that: The flip assembly (7) comprises a flip frame (71) mounted on the outside of the central axis (82), the flip frame (71) being in a cross shape, and the four outer side walls of the flip frame (71) are respectively connected to four material taking seats (72), one side of the material taking seat (72) is provided with a groove (73), a second electric push rod (75) is mounted inside the material taking seat (72) on one side of the groove (73), and the telescopic end of the second electric push rod (75) is connected to a clamp (74).

10. The multi-faceted color laser engraving machine according to claim 9, wherein: The flipping frame (71) is in contact with the side wall of the workbench (1), and the flipping frame (71) is connected to the central axis (82) to rotate relative to the workbench (1). The length of the flipping frame (71) corresponds to the distance from the central axis (82) to the front and rear two sets of U-shaped grooves (47). When the second electric push rod (75) is extended, the clamp (74) is movably connected to the U-shaped groove (47).

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