An efficient laser marking machine

Abstract

The present invention discloses an efficient laser marking machine, including a laser head, two flippable clamping devices, two feeding devices and an end feeding mechanism, the laser head is configured to scan along the X direction and the Y direction on a horizontal plane, the two clamping devices are symmetrically arranged, the clamping device includes a first clamping plate and a second clamping plate that are parallel and can approach and move away synchronously, the feeding device is installed on the clamping device, the feeding device includes a first conveyor belt and a second conveyor belt, the first clamping plate is enclosed in a closed loop formed by the first conveyor belt, the second clamping plate is enclosed in a closed loop formed by the second conveyor belt, an end feeding mechanism is provided at both ends of each feeding device, the two feeding devices and the four end feeding mechanisms at both ends form two parallel straight feeding tracks between the equipment inlet and outlet. The laser marking machine of the present invention can flip the product inside the device, and the feeding track adopts a three-stage type, which reduces the transmission distance of the product and improves the efficiency of marking.

Description

Technical Field

[0001] The invention relates to the technical field of laser marking, and in particular to an efficient laser marking machine. Background Art

[0002] Laser marking machines are commonly used in the industry to mark the surface of plate-type products such as PCB boards. When marking, the product is placed horizontally in the machine, and the laser head moves above the product according to the path set by the program and marks the set position. In many cases, it is necessary to print on both sides of the product. The existing laser marking machine uses a whole conveyor belt to transport the product from the feed port to the inside of the equipment. After marking one side of the product, the product is transported out of the equipment, and the product is manually turned 180° and then transported from the feed port to the equipment for marking on the other side. When one product comes out of the discharge end, the next product is placed in the feed port. Therefore, the existing marking machine is inefficient. Summary of the invention

[0003] The invention provides an efficient laser marking machine to shorten the marking time of a single product and improve the marking efficiency.

[0004] An efficient laser marking machine, comprising:

[0005] A laser head, wherein the laser head is configured to scan along an X direction and a Y direction perpendicular to the X direction on a horizontal plane;

[0006] Two flippable clamping devices, the two clamping devices are symmetrically arranged, and the clamping devices include a first clamping plate and a second clamping plate that are parallel and can move toward and away from each other synchronously;

[0007] Two feeding devices, the feeding devices are mounted on the clamping device, the feeding devices include a first conveyor belt and a second conveyor belt, the first clamping plate is enclosed in a closed loop formed by the first conveyor belt, and the second clamping plate is enclosed in a closed loop formed by the second conveyor belt;

[0008] An end feeding mechanism is provided at each end of each feeding device. The two feeding devices and the four end feeding mechanisms at both ends form two parallel straight feeding tracks between the inlet and outlet of the equipment.

[0009] In some embodiments, the feeding device also includes a first driving wheel, a first passive wheel, a second driving wheel, a second passive wheel, a first drive motor and a second drive motor. The first driving wheel, the first passive wheel and the first conveyor belt constitute a pulley transmission. The first driving wheel is connected to the output shaft of the first drive motor through gear meshing. The second driving wheel, the second passive wheel and the second conveyor belt constitute a pulley transmission. The second driving wheel is connected to the output shaft of the second drive motor through gear meshing.

[0010] In some embodiments, the end feeding mechanism includes a first pulley, a second pulley, a third pulley, a tensioning pulley, a fourth mounting plate, a fifth drive motor and a closed third conveyor belt, the fifth drive motor is fixed on the fourth mounting plate, the third pulley is connected to the output end of the fifth drive motor, the first pulley and the second pulley are located on the same horizontal plane, the third pulley and the tensioning pulley are located below the horizontal plane, the first pulley, the second pulley and the third pulley are arranged in the closed loop of the third conveyor belt to form a transmission structure, and the tensioning pulley is arranged outside the closed loop of the third conveyor belt for tensioning the third conveyor belt.

[0011] In some embodiments, it also includes a first mounting plate and a second mounting plate, and two clamping devices are rotatably connected to the first mounting plate and the second mounting plate respectively, and two end feeding mechanisms at both ends of one feeding device are fixed on the first mounting plate, and two end feeding mechanisms at both ends of the other feeding device are fixed on the second mounting plate.

[0012] In some embodiments, it also includes a flipping mechanism, a screw pair, a second guide rail and a fourth drive motor, the screw pair includes a ball screw and a screw nut, the ball screw and the second guide rail vertically pass through the first mounting plate and the second mounting plate, the ball screw is rotatably connected to the first mounting plate, the flange part of the screw nut is fixedly connected to the second mounting plate, the second guide rail is slidably connected to the second mounting plate, the fourth drive motor can drive the ball screw to rotate, the first mounting plate is fixed, and the second mounting plate can move toward or away from the first mounting plate.

[0013] In some embodiments, the flipping mechanism includes a third drive motor, a spline shaft, two first synchronous wheels, two second synchronous wheels, and two synchronous belts, wherein the third drive motor can drive the spline shaft to rotate around its center axis, the two second synchronous wheels are fixedly connected to the two clamping devices respectively, the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt, two first synchronous wheels are coaxially arranged with the spline shaft, the spline shaft vertically passes through the first mounting plate and the second mounting plate, a spline nut is sleeved on the spline shaft, a first sleeve with a flange is sleeved on the outer periphery of the spline nut, the flange part of the first sleeve is fixedly connected to the flange part of the spline nut, a second sleeve with a flange is coaxially arranged on the outer periphery of the first sleeve, a ball bearing is arranged between the second sleeve and the first sleeve, the flange part of the second sleeve is fixedly connected to the second mounting plate, and the first synchronous wheel is coaxially arranged on the outer periphery of the first sleeve and is key-connected to the first sleeve.

[0014] In some embodiments, the clamping device includes a first clamping plate, a second clamping plate, a fixed plate, a sliding assembly, a transmission assembly and a driving component. The sliding assembly is installed on the fixed plate, and the sliding direction of the sliding assembly is perpendicular to the first clamping plate. The transmission assembly includes two connecting members, a first connecting rod, a second connecting rod and a pulling rod. The two connecting members are connected to the sliding assembly, and the two connecting members are also connected to the first clamping plate and the second clamping plate, respectively. The first connecting rod and the second connecting rod are symmetrically arranged on both sides of the pulling rod, one end of the first connecting rod is hinged to one of the connecting members, and one end of the second connecting rod is hinged to the other connecting member. The other ends of the first connecting rod and the second connecting rod are connected at the same position of the pulling rod. The pulling rod is connected to the driving component, and the driving direction of the driving component is perpendicular to the sliding direction of the sliding assembly.

[0015] In some embodiments, the symmetry plane of the first connecting rod and the second connecting rod is coplanar with the rotation center axis of the clamping device, and the first clamping plate and the second clamping plate are symmetrically arranged on both sides of the symmetry plane.

[0016] In some embodiments, the sliding assembly includes a guide rail and two sliding blocks slidably connected to the guide rail, and the extension direction of the guide rail is perpendicular to the first clamping plate.

[0017] In some embodiments, the connecting member includes a transverse plate, protrusions vertically arranged from both ends of the transverse plate to the same side, and a short axis vertically arranged from the transverse plate to the other side, the short axis is equidistant from the two protrusions, a short axis is hinged at one end of the first connecting rod and the second connecting rod, a channel hole penetrating the fixed plate is provided in the groove, the protrusion passes through the channel hole, the protrusion of one connecting member is fixedly connected to the first splint, the protrusion of the other connecting member is fixedly connected to the second splint, each groove has two transverse plates, one of the sliders of the sliding assembly is fixedly connected to the transverse plate of one of the connecting members, and the other slider of the sliding assembly is fixedly connected to the transverse plate of the other connecting member.

[0018] The beneficial effects of the present invention are as follows: the laser marking machine can flip the product inside the device, thereby improving the working efficiency; the feeding track adopts a three-section type, on the one hand, the end feeding mechanism will not affect the flipping of the middle feeding device, on the other hand, there are products on the three sections of the track, which reduces the transmission distance of the product and improves the marking efficiency; synchronous clamping and synchronous flipping, there is no need to readjust the focal length after the product is flipped, thereby improving the marking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of an efficient laser marking machine according to one embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of a high-efficiency laser marking machine according to one embodiment of the present invention.

[0021] Figure 3It is a structural diagram of a flipping mechanism of an efficient laser marking machine according to one embodiment of the present invention.

[0022] Figure 4 The invention discloses an explosion of a connection structure between a spline shaft and a first synchronous wheel of an efficient laser marking machine according to one embodiment of the present invention.

[0023] Figure 5 This is a structural diagram of a clamping device for an efficient laser marking machine according to one embodiment of the present invention.

[0024] Figure 6 This is a structural diagram from another perspective of a clamping device of an efficient laser marking machine according to an embodiment of the present invention.

[0025] Figure 7 An exploded view of a clamping device of an efficient laser marking machine according to one embodiment of the present invention.

[0026] Figure 8 An exploded view of a fixing plate of an efficient laser marking machine according to an embodiment of the present invention.

[0027] Fig. 9 This is a front view of a fixing plate of a high-efficiency laser marking machine according to one embodiment of the present invention, with the fixing plate cover hidden.

[0028] Fig.10 It is a front view of a fixed plate cover of an efficient laser marking machine according to one embodiment of the present invention.

[0029] Fig.11 It is a structural diagram of a sliding assembly of an efficient laser marking machine according to one embodiment of the present invention.

[0030] Fig.12 It is a structural diagram of a transmission component of an efficient laser marking machine according to one embodiment of the present invention.

[0031] Fig.13 This is a structural diagram of a connector of an efficient laser marking machine according to one embodiment of the present invention.

[0032] Fig.14 This is a structural diagram of a pull rod of an efficient laser marking machine according to one embodiment of the present invention.

[0033] Fig.15 It is a structural diagram of a feeding device of an efficient laser marking machine according to one embodiment of the present invention.

[0034] Fig.16 This is a structural diagram of an efficient end feeding mechanism of a laser marking machine according to one embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-16 The present invention is described in further detail.

[0036] Please combine Figure 1-2 , Figure 5 and Fig.15 , an efficient laser marking machine, comprising:

[0037] A laser head 11, the laser head 11 is configured to scan along an X direction and a Y direction perpendicular to the X direction on a horizontal plane;

[0038] Two flippable clamping devices 1, the two clamping devices 1 are symmetrically arranged, and the clamping devices 1 include a first clamping plate 1100 and a second clamping plate 1200 that are parallel and can move toward and away from each other synchronously;

[0039] Two feeding devices 2, the feeding devices 2 are mounted on the clamping device 1, the feeding devices 2 include a first conveyor belt 2100 and a second conveyor belt 2200, the first clamping plate 1100 is enclosed in a closed loop formed by the first conveyor belt 2100, and the second clamping plate 1200 is enclosed in a closed loop formed by the second conveyor belt 2200;

[0040] An end feeding mechanism 10 is provided adjacent to both ends of each feeding device 2. The two feeding devices 2 and the four end feeding mechanisms 10 at both ends form two parallel straight feeding tracks between the inlet and outlet of the equipment.

[0041] This embodiment flips the product inside through the flippable clamping device 1. When one side of the product is marked, the product is immediately flipped 180° inside the device, thereby improving production efficiency. The feeding track of this embodiment adopts a three-section design, namely the middle feeding device 2 and the end feeding mechanisms 10 at both ends. The advantage is that, on the one hand, the end feeding mechanism 10 will not affect the flipping of the middle feeding device 2. On the other hand, there are products on the three sections of the track. When the middle feeding device 2 is occupied, the subsequent products can wait on the end feeding mechanism 10, thereby shortening the transmission distance between adjacent products and improving the marking efficiency.

[0042] The laser head 11 is used to provide a laser with sufficient energy density to mark the surface of the product. The laser head 11 can move linearly in the X and Y directions on the horizontal plane, and the laser scans the surface of the product through numerical control programming. Specifically, the laser head 11 is installed on a fixed frame, which is then fixed to a linear module, and the two ends of the linear module are connected to two other linear modules orthogonal to the linear module. The linear module is driven by a precision screw and a slider guide pair.

[0043] The two end feeding mechanisms 10 at one end are located at the feeding end, and the two end feeding mechanisms 10 at the other end are located at the discharging end. At the feeding end, the two opposite edges of the product are placed on the end feeding mechanisms 10 respectively, and the product is conveyed to the feeding device 2 by the end feeding mechanisms 10. After reaching the set position, the clamping device 1 clamps the two edges of the product. After one side of the product is marked, the clamping device 2 rotates 180° and then marks the other side. Finally, the feeding device 2 conveys the product to the end feeding mechanism 10 at the discharging end, and the end feeding mechanism 10 at the discharging end sends the product out of the laser marking machine.

[0044] Please refer to Figure 2 The efficient laser marking machine also includes a first mounting plate 4 and a second mounting plate 5, two clamping devices 1 are rotatably connected to the first mounting plate 4 and the second mounting plate 5 respectively, two end feeding mechanisms 10 at both ends of one feeding device 2 are fixed on the first mounting plate 4, and two end feeding mechanisms 10 at both ends of the other feeding device 2 are fixed on the second mounting plate 5.

[0045] Please combine Figure 3 and Figure 4 An efficient laser marking machine also includes a screw pair, a second guide rail 6 and a fourth drive motor 7. The screw pair includes a ball screw 8 and a screw nut. The ball screw 8 and the second guide rail 6 vertically pass through the first mounting plate 4 and the second mounting plate 5. The ball screw 8 is rotatably connected to the first mounting plate 4. The flange portion of the screw nut is fixedly connected to the second mounting plate 5. The second guide rail 6 is slidably connected to the second mounting plate 5. The fourth drive motor 7 can drive the ball screw 8 to rotate, for example, by a pulley transmission. The two clamping devices 1 are respectively arranged near the two opposite sides of the first mounting plate 4 and the second mounting plate 5, and are respectively connected to the first mounting plate 4 and the second mounting plate 5. The first mounting plate 4 is fixed and the second mounting plate 5 can move toward or away from the first mounting plate 4. The two opposite edges of the product are clamped by the clamping devices 1 located on both sides thereof, and the flipping mechanism 3 drives the clamping device 1 and the product to flip. The second mounting plate 5 is enabled to move toward and away from the first mounting plate 4 through the action of the screw pair, thereby changing the distance between the two clamping devices 1 and the opposite end feeding mechanisms 10 to adapt to products of different widths.

[0046] Please refer to Figure 3 and Figure 4, and also includes a flip mechanism 3, the flip mechanism 3 includes a third drive motor 3100, a spline shaft 3200, two first synchronous wheels 3300, two second synchronous wheels 3400, and two synchronous belts 3600, wherein the third drive motor 3100 can drive the spline shaft 3200 to rotate around its central axis, the two second synchronous wheels 3400 are respectively fixedly connected to the two clamping devices 1, the first synchronous wheel 3300 is connected to the second synchronous wheel 3400 by a synchronous belt 3600, and two second synchronous wheels 3300 are coaxially provided with the spline shaft 3200. A synchronous wheel 3300, a spline shaft 3200 vertically passes through the first mounting plate 4 and the second mounting plate 5, a spline nut 3220 is sleeved on the spline shaft 3200, a first sleeve 3230 with a flange is sleeved on the outer periphery of the spline nut 3220, the flange part of the first sleeve 3230 is fixedly connected with the flange part of the spline nut 3220, a second sleeve 3240 with a flange is coaxially arranged on the outer periphery of the first sleeve 3230, a ball bearing 3250 is arranged between the second sleeve 3240 and the first sleeve 3230, the flange part of the second sleeve 3240 is fixedly connected with the second mounting plate 5, the first synchronous wheel 3300 is coaxially arranged on the outer periphery of the first sleeve 3230 and is key-connected with the first sleeve 3230. The third driving motor 3100 drives the spline shaft 3200 to rotate, and the two clamping devices 1 are turned synchronously by means of the synchronous belt and synchronous wheel transmission structure. The spline shaft 3200 and the spline nut 3220 of this embodiment cooperate to form a ball spline pair. The ball spline pair utilizes balls installed in the outer tube of the spline shaft to smoothly roll and transmit torque in the precision-ground rolling groove. The flipping mechanism 3 of this embodiment can not only drive the clamping device 1 to flip, but also will not affect the movement of the second mounting plate 5.

[0047] Please refer to Figure 3 The flipping mechanism 3 further includes a connecting shaft 3500, which is connected to the clamping device 1 and is used to transmit the rotation to the clamping device 1. One end of the connecting shaft 3500 is coaxially fixed to the second synchronous wheel 3400, and the other end is vertically fixed to the clamping device 1. The two connecting shafts 3500 are also rotatably connected to the first mounting plate 4 and the second mounting plate 5, respectively, for example, through bearings, so that the connecting shaft 3500 can rotate about its central axis, so that the second synchronous wheel 3400 can transmit the torque to the clamping device 1, so as to realize the flipping of the clamping device 1. The central axis of the connecting shaft 3500 is exactly coplanar with the symmetry plane of the first connecting rod 1530 and the second connecting rod 1540.

[0048] Please refer to Figure 2 , also includes a third mounting plate 1, the spline shaft 3200 also passes through the third mounting plate 9, the spline shaft 3200 is rotatably connected to the third mounting plate 9, the third drive motor 3100 is fixed on the third mounting plate 9, and the fourth motor 7 is also installed on the third mounting plate 9.

[0049] Please refer to Fig.16 The end feeding mechanism 10 includes a first pulley 1010, a second pulley 1020, a third pulley 1030, a tensioning wheel 1040, a fourth mounting plate 1050, a fifth drive motor 1060 and a closed third conveyor belt 1070. The fifth drive motor 1060 is fixed on the fourth mounting plate 1040. The third pulley 1030 is connected to the output end of the fifth drive motor 1060. The first pulley 1010 and the second pulley 1020 are located on the same horizontal plane. The third pulley 1030 and the tensioning wheel 1040 are located below the horizontal plane. The first pulley 1010, the second pulley 1020 and the third pulley 1030 are arranged in the closed loop of the third conveyor belt 1070 to form a transmission structure. The tensioning wheel 1040 is arranged outside the closed loop of the third conveyor belt 1070 to tension the third conveyor belt 1070. The fourth mounting plate 1050 is mounted on the first mounting plate 4 and the second mounting plate 5. When the product is being transported, the edge of the product rests on the conveyor belt between the first pulley 1010 and the second pulley 1020. In order to smoothly transfer the product between the feeding device 2 and the end feeding mechanism 10, the conveyor belt of the feeding device 2 and the conveyor belt of the end feeding mechanism 10 are on the same horizontal plane when transferring the product.

[0050] Please combine Figure 5-7 The two clamping devices 1 are symmetrically arranged. The clamping device 1 includes a first clamping plate 1100, a second clamping plate 1200, a fixed plate 1300, a sliding assembly 1400, a transmission assembly 1500 and a driving component 1600. The first clamping plate 1100 and the second clamping plate 1200 are parallel to each other. The sliding assembly 1400 is installed on the fixed plate 1300, and the sliding direction of the sliding assembly 1400 is perpendicular to the first clamping plate 1100.

[0051] The symmetry plane of the first connecting rod 1530 and the second connecting rod 1540 is coplanar with the rotation center axis of the clamping device 1, or coplanar with the center axis of the second synchronous wheel 3400, or coplanar with the center axis of the connecting shaft 3500, and the first clamping plate 1100 and the second clamping plate 1200 are symmetrically arranged on both sides of the symmetry plane. When the product is delivered to the place by the feeding device 2, the first clamping plate 1100 / the second clamping plate 1200 moves upward with the product, and the second clamping plate 1200 / the first clamping plate 1100 also moves downward synchronously, and finally the two clamping plates just arrive at the symmetry plane at the same time and stop, clamping the product. At this time, the product is located on the symmetry plane. After the fixed plate 1300 flips 180°, the product is still on the symmetry plane, and there is no need to readjust the focal length.

[0052] Please refer to Figure 8 The fixing plate 1300 has a first surface 1311 and an opposite second surface 1312. The first surface 1311 is provided with two grooves 1313. The openings of the grooves 1313 are provided with a fixing plate cover 1320. Figure 7 The first clamping plate 1100 and the second clamping plate 1200 are respectively arranged on the side corresponding to the second surface 1312, and the first clamping plate 1100 and the second clamping plate 1200 extend along the length direction of the fixing plate 1300, and the connecting shaft 3500 is fixedly connected to the first surface 1311. The fixing plate 1300 is in the shape of a strip, please refer to Fig. 9 A symmetry axis AA′ is defined at a position passing through half of the length of the fixing plate 1300 and perpendicular to its length direction, and two grooves 1313 are symmetrically arranged on both sides of the symmetry axis AA′. Parts of the sliding assembly 1400 and the transmission assembly 1500 are arranged in the grooves 1313, which can reduce the volume of the entire clamping device and make the clamping device look beautiful.

[0053] Please refer to Fig.11 The sliding assembly 1400 includes a guide rail 1410 and two sliders 1420 slidably connected to the guide rail 1410. The sliding direction of the sliding assembly 1400 is perpendicular to the first clamping plate 1100 and the second clamping plate 1200, that is, the extending direction of the guide rail 1410 is perpendicular to the first clamping plate 1100 and the second clamping plate 1200. In some embodiments, two sliding assemblies 1400 are fixed in each groove 1313. In some embodiments, please refer to Fig. 9 The bottom surface of the groove 1313 is provided with two long grooves 1317, and the two sliding assemblies 1400 are respectively fixed in the long grooves 1317. The sliding assemblies 1400 are arranged in the long grooves 1317, making the structure more compact.

[0054] Each groove 1313 corresponds to a transmission assembly 1500. Please refer to Fig.12 The transmission assembly 1500 includes two connecting members 1510, a first connecting rod 1530, a second connecting rod 1540, and a pull rod 1550. The two connecting members 1510 are parallel to each other and extend along the length direction of the first clamping plate 1100. The two connecting members 1510 are connected to the sliding assembly 1400, and the two connecting members 1510 are also connected to the first clamping plate 1100 and the second clamping plate 1200 respectively. The first connecting rod 1530 and the second connecting rod 1540 are symmetrically arranged on both sides of the pull rod 1550, one end of the first connecting rod 1530 is hinged to one of the connecting members 1510, one end of the second connecting rod 1540 is hinged to the other connecting member 1510, and the other ends of the first connecting rod 1530 and the second connecting rod 1540 are hinged to the same position of the pull rod 1550, and the pull rod 1550 is connected to the driving component 1600, and the driving direction of the driving component 1600 is perpendicular to the sliding direction of the sliding assembly 1400.

[0055] Define the hinge point between the first link 1530 and one of the connecting members 1510 as M, the hinge point between the second link 1540 and the other connecting member 1510 as N, and the hinge point between the first link 1530 / the second link 1540 and the pull rod 1550 as P. The first link 1530 and the second link 1540 are symmetrically arranged on both sides of the pull rod 1550, and the lengths of the first link 1530 and the second link 1540 are the same, that is, the distance from the hinge point M to the hinge point P is equal to the distance from the hinge point N to the hinge point P. When the pull rod 1550 is pulled or pushed to make the point P move parallel to the first clamping plate 1100 or the second clamping plate 1200, the relative distance between the point M and the point N will be shortened or extended, that is, the two connecting members 1510 will be synchronously approached or moved away from each other along the guide rail 1410, and then the first clamping plate 1100 and the second clamping plate 1200 will be synchronously approached or moved away from each other.

[0056] Please combine Fig.13 The connecting member 1510 includes a horizontal plate 1511, a protrusion 1512 vertically arranged from both ends of the horizontal plate 1511 to the same side, and a short shaft 1513 vertically arranged from the horizontal plate 1511 to the other side. The short shaft 1513 is equidistant from the two protrusions 1512, and the end of the short shaft 1513 is hinged to the first connecting rod 1530 / the second connecting rod 1540. Specifically, the horizontal plate 1511 is in the shape of a strip, and the protrusion 1512 and the horizontal plate 1511 are an integral structure, and can also be welded or bolted, and the end of the short shaft 1513 can be tightly connected to the horizontal plate 1511 by welding, interference fit, etc. The protrusion 1512 passes through the fixing plate 1300, and the protrusion 1512 of one connecting member 1510 is fixedly connected to the first clamping plate 1100, and the protrusion 1512 of the other connecting member 1510 is fixedly connected to the second clamping plate 1200. Two transverse plates 1511 are provided in each groove 1313 . One of the sliders 1420 of the sliding assembly 1400 is fixedly connected to the transverse plate 1511 of one of the connecting members 1510 , and the other slider 1420 of the sliding assembly 1400 is fixedly connected to the transverse plate 1511 of the other connecting member 1510 .

[0057] Please refer to Fig. 9, a channel hole 1316 is provided in the groove 1313, and the channel hole 1316 passes through the fixing plate 1300. The horizontal plate 5100 is located in the groove 1313, and the protrusion 1512 passes through the channel hole 1316 and is fixedly connected to the first clamping plate 1100 / the second clamping plate 1200 on the other side. The channel hole 1316 has a certain length in a direction perpendicular to the first clamping plate 1100, so that the protrusion 1512 has a certain range of movement in a length direction perpendicular to the first clamping plate 1100. In some embodiments, the bottom surface of each groove 1313 has four channel holes 1316 arranged in a 2×2 array. In other embodiments, the channel holes 1316 of this embodiment can be deformed, such as connecting two channel holes 1316 arranged perpendicular to the length direction of the first clamping plate 1100 as a whole to form a longer channel hole.

[0058] The first connecting rod 1530, the second connecting rod 1540 and the pull rod 1550 are arranged outside the groove 1313. The fixing plate cover 1320 is provided with a cover through hole 1321 extending perpendicularly to the first clamping plate 1100. The fixing plate cover 3200 is fixed to the groove 1313, for example, by bolts, and the short shaft 1513 passes through the cover through hole 1321. The cover through hole 1321 provides a connection channel between the connecting member 1510 and the first connecting rod 1530 / the second connecting rod 1540, and also provides sufficient space for the movement of the short shaft 1513.

[0059] Please refer to Fig.14 The pull rod 1550 includes a U-shaped member 1551 and a pull shaft 1552 connected to the rear end of the U-shaped member 1551. The pull shaft 1552 and the U-shaped member 1551 can be welded or bolted. The ends of the first connecting rod 1530 and the second connecting rod 1540 are respectively arranged in the U-shaped opening and are hinged to the U-shaped member 1551 through a pin.

[0060] In this embodiment, the driving component 1600 is preferably a cylinder. The output end of the driving component 1600 is connected to the pull rod 1550. In some embodiments, the piston rod of the driving component 1600 is specifically connected to the end of the pull shaft 1552. The driving direction of the driving component 1600 is parallel to the first clamping plate 1100 or the second clamping plate 1200. In this embodiment, the driving component 1600 is specifically installed on the fixed plate cover 1320.

[0061] The clamping device of this embodiment is particularly suitable for clamping sheet-like or plate-like objects. Two clamping devices are used in combination, for example, the two clamping devices are arranged opposite to each other, and the distance between them is equivalent to the width of the product, so that the two clamping devices can clamp the two opposite edges of the product respectively. The clamping process of the clamping device is as follows: after the sheet-like or plate-like object is placed between the first clamping plate 1100 and the second clamping plate 1200, the piston rod of the control cylinder is extended to push the hinge point P forward, at this time, the hinge point M and the hinge point N approach each other along the direction of the guide rail 1410, and the two connecting members 1510 approach each other along the direction of the guide rail 1410, and then the first clamping plate 1100 and the second clamping plate 1200 approach each other, and at a certain position, the first clamping plate 1100 and the second clamping plate 1200 clamp the object. The process of cancelling clamping is opposite to the above process, and the process is as follows: the piston rod of the control cylinder is contracted, and the hinge point P is pulled back, at which time the hinge point M and the hinge point N move away from each other along the guide rail 1410, that is, the two connecting members 1510 move away from each other along the guide rail 1410, and further, the first clamping plate 1100 and the second clamping plate 1200 move away from each other, thereby canceling the clamping of the object. The beneficial effect of the present invention is that after the clamping device is turned 180° with the center of the fixed plate 1300 as the rotation center, the product clamped between the first clamping plate 1100 and the second clamping plate 1200 is kept on the same horizontal plane, that is, the distance to the laser head of the laser engraving machine remains unchanged.

[0062] Please refer to Fig.15 The feeding device 2 is installed on the fixed plate 1300, and includes a first conveyor belt 2100 and a second conveyor belt 2200. The first clamping plate 1100 is arranged in a closed loop formed by the first conveyor belt 2100, and the second clamping plate 1200 is arranged in a closed loop formed by the second conveyor belt 2200. The product is transferred to a set position by one of the conveyor belts, and the product is turned over and then transferred out by the other conveyor belt.

[0063] The feeding device 2 further comprises a first driving wheel 2300, a first passive wheel 2400, a second driving wheel 2500, a second passive wheel 2600, a first drive motor 2700 and a second drive motor 2800. The first driving wheel 2300, the first passive wheel 2400 and the first conveyor belt 2100 constitute a pulley transmission mechanism, the first driving wheel 2300 is connected to the output shaft of the first drive motor 2700 by gear meshing, the second driving wheel 2500, the second passive wheel 2600 and the second conveyor belt 2200 constitute a pulley transmission, and the second driving wheel 2500 is connected to the output shaft of the second drive motor 2800 by gear meshing.

[0064] The first conveyor belt 2100 and the second conveyor belt 2200 have the same length, and their transmission directions are parallel to the first clamping plate 1100 or the second clamping plate 1200. In this embodiment, the first conveyor belt 2100 surrounds the outer edge of the first clamping plate 1100, and the second conveyor belt 2200 surrounds the outer edge of the second clamping plate 1200. Preferably, the first driving wheel 2300, the first passive wheel 2400, the second driving wheel 2500 and the second passive wheel 2600 are all installed on the fixed plate 1300 through bearings. The first driving wheel 2300 and the first passive wheel 2400 are respectively arranged at both ends of the first conveyor belt 2100 to drive the first conveyor belt 2100 to move. The second driving wheel 2500 and the second passive wheel 2600 are arranged at both ends of the second conveyor belt 2200 to drive the second conveyor belt 2200 to move. The first driving wheel 2300 and the second passive wheel 2600 are located at the same end, and the first passive wheel 2400 and the second driving wheel 2500 are located at the same end. A first gear 2301 is fixed to the first driving wheel 2300, and a second gear 2501 is fixed to the second driving wheel 2500. The output end of the first driving motor 2700 is meshed with the first gear 2301 through a gear, and the first driving motor 2700 drives the first driving wheel 2300 to rotate, driving the first conveyor belt 2100 to move. The output end of the second driving motor 2800 is meshed with the second gear 2501 through a gear, and the second driving motor 2800 drives the second driving wheel 2500 to rotate, driving the second conveyor belt 2200 to rotate. When the clamping device 1 is turned over, the gears are separated from each other, and when the clamping device 1 is turned over 180°, the gears are meshed again.

[0065] The two clamping devices 1 of this embodiment are symmetrically arranged. When in use, the clamping plates of the clamping device 1 are in a horizontal state, and the plate-like or sheet-like product enters between the first conveyor belt 2100 and the second conveyor belt 2200, and stops after being conveyed to a designated position by the conveyor belt, and then the first clamping plate 1100 and the second clamping plate 1200 are controlled to be relatively close, and the conveyor belt and the product are clamped together by utilizing the flexible characteristics of the conveyor belt.

[0066] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An efficient laser marking machine, characterized in that: include: A laser head (11), wherein the laser head (11) is configured to scan along an X direction and a Y direction perpendicular to the X direction on a horizontal plane; Two flippable clamping devices (1), the two clamping devices (1) are symmetrically arranged, and the clamping devices (1) comprise a first clamping plate (1100) and a second clamping plate (1200) that are parallel and capable of synchronously approaching and synchronously moving away from each other; Two feeding devices (2), the feeding devices (2) being mounted on the clamping device (1), the feeding devices (2) comprising a first conveyor belt (2100) and a second conveyor belt (2200), the first clamping plate (1100) being enclosed in a closed loop formed by the first conveyor belt (2100), and the second clamping plate (1200) being enclosed in a closed loop formed by the second conveyor belt (2200); An end feeding mechanism (10), each end feeding mechanism (10) being provided adjacent to both ends of each feeding device (2), and the two feeding devices (2) and the four end feeding mechanisms (10) at both ends form two parallel straight feeding tracks between the inlet and outlet of the equipment; The clamping device (1) comprises a first clamping plate (1100), a second clamping plate (1200), a fixed plate (1300), a sliding assembly (1400), a transmission assembly (1500) and a driving component (1600). The sliding assembly (1400) is mounted on the fixed plate (1300). The sliding direction of the sliding assembly (1400) is perpendicular to the first clamping plate (1100). The transmission assembly (1500) comprises two connecting members (1510), a first connecting rod (1530), a second connecting rod (1540) and a pull rod (1550). The two connecting members (1510) are connected to the sliding assembly (1400). The two connecting members (1510) are also divided into The first connecting rod (1530) and the second connecting rod (1540) are respectively connected to the first clamping plate (1100) and the second clamping plate (1200), the first connecting rod (1530) and the second connecting rod (1540) are symmetrically arranged on both sides of the pull rod (1550), one end of the first connecting rod (1530) is hinged to one of the connecting members (1510), one end of the second connecting rod (1540) is hinged to the other connecting member (1510), the other ends of the first connecting rod (1530) and the second connecting rod (1540) are connected to the same position of the pull rod (1550), the pull rod (1550) is connected to the driving component (1600), and the driving direction of the driving component (1600) is perpendicular to the sliding direction of the sliding component (1400); The sliding assembly (1400) comprises a guide rail (1410) and two sliding blocks (1420) slidably connected to the guide rail (1410); the extension direction of the guide rail (1410) is perpendicular to the first clamping plate (1100); The connecting member (1510) comprises a transverse plate (1511), protrusions (1512) vertically arranged from both ends of the transverse plate (1511) to the same side, and a short axis (1513) vertically arranged from the transverse plate (1511) to the other side, wherein the short axis (1513) is equidistant from the two protrusions (1512), one end of each of the first connecting rod (1530) and the second connecting rod (1540) is hingedly connected to a short axis (1513), and the fixing plate (1300) comprises a first surface (1311) and an opposite second surface (1312), the first surface (1311) is provided with two grooves (1313), and the grooves (1313) are provided with a groove that penetrates the fixing plate (1300). The protrusion (1512) passes through the channel hole (1316), the protrusion (1512) of one connecting member (1510) is fixedly connected to the first clamping plate (1100), and the protrusion (1512) of the other connecting member (1510) is fixedly connected to the second clamping plate (1200), each groove (1313) has two transverse plates (1511), one of the sliders (1420) of the sliding assembly (1400) is fixedly connected to the transverse plate (1511) of one of the connecting members (1510), and the other slider (1420) of the sliding assembly (1400) is fixedly connected to the transverse plate (1511) of the other connecting member (1510).

2. According to claim 1, an efficient laser marking machine is characterized in that: The feeding device (2) further comprises a first driving wheel (2300), a first passive wheel (2400), a second driving wheel (2500), a second passive wheel (2600), a first drive motor (2700) and a second drive motor (2800); the first driving wheel (2300), the first passive wheel (2400) and the first conveyor belt (2100) constitute a pulley transmission; the first driving wheel (2300) is connected to the output shaft of the first drive motor (2700) through gear meshing; the second driving wheel (2500), the second passive wheel (2600) and the second conveyor belt (2200) constitute a pulley transmission; the second driving wheel (2500) is connected to the output shaft of the second drive motor (2800) through gear meshing.

3. According to the efficient laser marking machine of claim 1, it is characterized in that: The end feeding mechanism (10) comprises a first pulley (1010), a second pulley (1020), a third pulley (1030), a tensioning wheel (1040), a fourth mounting plate (1050), a fifth drive motor (1060) and a closed third conveyor belt (1070), wherein the fifth drive motor (1060) is fixed on the fourth mounting plate (1050), the third pulley (1030) is connected to the output end of the fifth drive motor (1060), and the first pulley (1010) is connected to the output end of the fifth drive motor (1060). The first pulley (1010) and the second pulley (1020) are located on the same horizontal plane, the third pulley (1030) and the tensioning wheel (1040) are located below the horizontal plane, the first pulley (1010), the second pulley (1020) and the third pulley (1030) are arranged in a closed loop of the third conveyor belt (1070) to form a transmission structure, and the tensioning wheel (1040) is arranged outside the closed loop of the third conveyor belt (1070) for tensioning the third conveyor belt (1070).

4. The efficient laser marking machine according to claim 1, characterized in that: It also comprises a first mounting plate (4) and a second mounting plate (5), wherein the two clamping devices (1) are rotatably connected to the first mounting plate (4) and the second mounting plate (5), respectively; the two end feeding mechanisms (10) at both ends of one feeding device (2) are fixed to the first mounting plate (4), and the two end feeding mechanisms (10) at both ends of the other feeding device (2) are fixed to the second mounting plate (5).

5. The efficient laser marking machine according to claim 4, characterized in that: The invention also comprises a flipping mechanism (3), a screw pair, a second guide rail (6) and a fourth drive motor (7); the screw pair comprises a ball screw (8) and a screw nut; the ball screw (8) and the second guide rail (6) vertically pass through the first mounting plate (4) and the second mounting plate (5); the ball screw (8) is rotatably connected to the first mounting plate (4); the flange portion of the screw nut is fixedly connected to the second mounting plate (5); the second guide rail (6) is slidably connected to the second mounting plate (5); the fourth drive motor (7) can drive the ball screw (8) to rotate; the first mounting plate (4) is fixed; and the second mounting plate (5) can move toward or away from the first mounting plate (4).

6. The efficient laser marking machine according to claim 5, characterized in that: The turnover mechanism (3) comprises a third drive motor (3100), a spline shaft (3200), two first synchronous wheels (3300), two second synchronous wheels (3400), and two synchronous belts (3600), wherein the third drive motor (3100) is capable of driving the spline shaft (3200) to rotate around its central axis, the two second synchronous wheels (3400) are respectively fixedly connected to two clamping devices (1), the first synchronous wheel (3300) and the second synchronous wheel (3400) are connected via a synchronous belt (3600), two first synchronous wheels (3300) are coaxially arranged with the spline shaft (3200), the spline shaft (3200) vertically passes through the first mounting plate (4) and the second mounting plate (5), the spline A spline nut (3220) is sleeved on the shaft (3200), a first sleeve (3230) with a flange is sleeved on the outer periphery of the spline nut (3220), the flange portion of the first sleeve (3230) is fixedly connected to the flange portion of the spline nut (3220), a second sleeve (3240) with a flange is coaxially arranged on the outer periphery of the first sleeve (3230), a ball bearing (3250) is arranged between the second sleeve (3240) and the first sleeve (3230), the flange portion of the second sleeve (3240) is fixedly connected to the second mounting plate (5), and the first synchronous wheel (3300) is coaxially arranged on the outer periphery of the first sleeve (3230) and is key-connected to the first sleeve (3230).

7. The efficient laser marking machine according to claim 1, characterized in that: The symmetry plane of the first connecting rod (1530) and the second connecting rod (1540) is coplanar with the rotation center axis of the clamping device (1), and the first clamping plate (1100) and the second clamping plate (1200) are symmetrically arranged on both sides of the symmetry plane.

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