Laser marking equipment

Abstract

The present invention belongs to the technical field of marking equipment, and in particular, relates to a laser marking equipment, including a conveying device, a frame and a laser, wherein the conveying device is installed on the frame and used to convey objects to be marked, the laser is installed in the frame and is located below the conveying device, and the laser head of the laser is arranged corresponding to the conveying path of the conveying device to sequentially laser mark the lower end faces of each object to be marked conveyed by the conveying device. Since the conveying device is installed on the frame, the laser is installed in the frame, and the laser is located below the conveying device, the laser head of the laser can perform laser marking operations on the bottom of the object to be marked, so that the object to be marked can complete the laser marking while maintaining its posture unchanged, avoiding the phenomenon that the electronic components installed on the upper end face of the object to be marked are easily scratched with the external base surface due to the flipping of the object to be marked, thereby ensuring the safety of the object to be marked during laser marking, so that the laser marking operation proceeds smoothly.

Description

Technical Field

[0001] The invention belongs to the technical field of marking equipment, and in particular relates to a laser marking equipment. Background Art

[0002] Before leaving the factory, electronic devices need to be marked with model, category and other relevant codes on their surface. In the electronic device marking process, the electronic device is usually placed on a workbench and the surface of the electronic device is marked by a marking device.

[0003] In the prior art, when the bottom of an electronic device needs to be marked, the electronic device needs to be turned over so that its lower end faces upward to achieve the marking operation. Although this can achieve the marking of the bottom of the electronic device, after the electronic device is turned over, its upper end faces downward, which makes it easy for the electronic components mounted on its upper end to be scratched by external base surfaces such as a workbench, causing damage. Summary of the invention

[0004] The object of the present invention is to provide a laser marking device, aiming to solve the technical problem in the prior art that when an electronic device is turned over for marking, the electronic components mounted on its upper end surface are easily scratched.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a laser marking device, including a conveying device, a frame and a laser, the conveying device is installed on the frame and is used to convey the objects to be marked, the laser is installed in the frame and is located below the conveying device, and the laser head of the laser is arranged corresponding to the conveying path of the conveying device to sequentially laser mark the lower end faces of each of the objects to be marked conveyed by the conveying device.

[0006] Furthermore, the laser marking device also includes a motion module, which includes an X-axis linear module and a Y-axis linear module. The X-axis linear module is installed in the frame, the Y-axis linear module is installed on the driving end of the X-axis linear module, and the laser is arranged on the driving end of the Y-axis linear module.

[0007] Furthermore, the motion module also includes a Z-axis lifting device, which is installed on the driving end of the Y-axis linear module, and the laser is installed on the driving end of the Z-axis lifting device.

[0008] Furthermore, the Z-axis lifting device includes a support frame, a drive motor and a lifting assembly, the support frame is installed on the driving end of the Y-axis linear module, the lifting assembly is installed in the support frame, the drive motor is installed on one side of the support frame, and the output shaft of the drive motor extends into the support frame and cooperates with the lifting assembly to drive the lifting assembly to move along the Z-axis direction, and the laser is installed on the lifting assembly.

[0009] Furthermore, the lifting assembly includes a driving nut, a lifting screw, a supporting plate and a plurality of guide members, the driving nut is rotatably installed in the support frame along the Z-axis direction, the lifting screw and the driving nut are threadedly matched, the driving nut sleeve is provided with a first bevel gear, the output shaft sleeve is provided with a second bevel gear, the output shaft is engaged with the second bevel gear and the first bevel gear to drive the driving nut to rotate around the Z-axis direction, each of the guide members is installed on the support frame along the Z-axis direction, the supporting plate is rotatably installed on the top end of the lifting screw, and the supporting plate is connected to each of the guide members, and the laser is installed on the supporting plate.

[0010] Furthermore, the conveying device includes a first conveying module and a second conveying module for conveying the object to be marked, the first conveying module and the second conveying module are installed in parallel on the frame, and the conveying path is formed between the first conveying module and the second conveying module.

[0011] Furthermore, the conveying device also includes two lifting devices, each of which includes a lifting cylinder and a lifting assembly. The two lifting cylinders are respectively installed on the first conveying module and the second conveying module. The lifting assembly is connected to the piston rod of the corresponding lifting cylinder and is located between the first conveying module and the second conveying module. The lifting assembly is arranged corresponding to the laser head and is used to lift and limit the object to be marked that reaches above the laser head.

[0012] Furthermore, the conveying device also includes two limit members, which are respectively installed on the first conveying module and the second conveying module, one end of the two limit members extends between the first conveying module and the second conveying module and is respectively located above the two lifting components, and a clamping space for clamping the object to be marked is formed between the limit members and the corresponding lifting components.

[0013] Furthermore, the conveying device also includes a width adjustment mechanism, which includes a width adjustment motor, a first transmission screw and a second transmission screw. The width adjustment motor is installed on the frame, and the first end of the first transmission screw and the first end of the second transmission screw are both transmission-connected to the output shaft of the width adjustment motor. The first conveying module is provided with connecting blocks at both opposite ends along its length direction, and threaded holes are provided on the two connecting blocks. The second end of the first transmission screw and the second end of the second transmission screw are respectively passed through the two threaded holes and are both rotationally connected to the second conveying module.

[0014] Furthermore, the conveying device also includes two limiting mechanisms, each of which includes a lifting cylinder and a limiting block. The two lifting cylinders are respectively installed on the first conveying module and the second conveying module along the Z-axis direction on one side facing each other and are both located in front of the lifting assembly along the conveying path. The two limiting blocks are respectively installed on the piston rods of the two lifting cylinders and can extend into the conveying path under the drive of the lifting cylinders to intercept the objects to be marked.

[0015] Beneficial effects of the present invention: The laser marking equipment of the present invention is provided with a conveying device and a laser, and the laser head of the laser is arranged opposite to the conveying path of the conveying device, so that the object to be marked can pass through the laser head of the laser in sequence under the conveying of the conveying device, thereby completing the laser marking operation. Since the conveying device is installed on the frame, the laser is installed in the frame, and the laser is located below the conveying device, the laser head of the laser can perform laser marking operations on the bottom of the object to be marked, so that the object to be marked can complete the laser marking while maintaining its posture unchanged, avoiding the phenomenon that the electronic components installed on the upper end surface of the object to be marked are easily scratched with the external base surface due to the flipping of the object to be marked, thereby ensuring the safety of the object to be marked during laser marking, so that the laser marking operation can proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of a laser marking device provided in an embodiment of the present invention;

[0018] Figure 2 Another structural schematic diagram of the laser marking device provided by an embodiment of the present invention;

[0019] Figure 3A schematic diagram of the exploded structure of the conveying device and the motion module of the laser marking device provided in an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the structure of a Z-axis lifting device of a laser marking device provided in an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of an exploded structure of a Z-axis lifting device of a laser marking device provided in an embodiment of the present invention;

[0022] Figure 6 A schematic diagram of the structure of a conveying device for a laser marking device provided in an embodiment of the present invention Figure 1 ;

[0023] Figure 7 for Figure 6 A partial enlarged view of point A in the middle;

[0024] Figure 8 A schematic diagram of the structure of a conveying device for a laser marking device provided in an embodiment of the present invention Figure 2 ;

[0025] Fig. 9 for Figure 8 A partial enlarged view of point B in the middle;

[0026] Fig.10 for Figure 8 A partial enlarged view of point C in the middle;

[0027] Fig.11 A schematic diagram of the structure of a conveying device for a laser marking device provided in an embodiment of the present invention Figure 3 ;

[0028] Fig.12 for Fig.11 A magnified partial view of point D in the middle.

[0029] Among them, the reference numerals in the figure are:

[0030] 10—Conveying device 11—First conveying module 12—Second conveying module

[0031] 13—Conveying path 14—Lifting device 15—Limiting part

[0032] 16-width adjustment mechanism 17-belt tensioning mechanism 18-sensor

[0033] 20—frame 21—shell cover 30—laser

[0034] 31 - laser head 40 - motion module 41 - X-axis linear module

[0035] 42—Y-axis linear module 43—Z-axis lifting device 44—guide rail

[0036] 50 - limit mechanism 51 - mounting frame 52 - lifting cylinder

[0037] 53—guide sleeve 54—limit block 60—display module

[0038] 61—input device 111—connection block 141—lifting cylinder

[0039] 142 - Lifting assembly 143 - Connecting plate 144 - Lifting plate

[0040] 145—second slide rail 161—width adjustment motor 162—first transmission screw

[0041] 163 - second transmission screw 164 - support block 165 - guide rod

[0042] 166 - transmission assembly 167 - driving wheel 168 - driven wheel

[0043] 169—synchronous belt 171—assembly block 172—adjustment block

[0044] 173 - Adjusting wheel 174 - Pressing wheel 211 - Feeding port

[0045] 212—smoke exhaust port 213—sound and light alarm 431—support frame

[0046] 432—driving motor 433—driving nut 434—lifting screw

[0047] 435—supporting plate 436—guide member 437—first through hole

[0048] 438—second through hole 439—transition shaft 440—coupling

[0049] 441—mounting plate 442—cap member 443—first slide rail member

[0050] 444—Lifting assembly 445—Connector. DETAILED DESCRIPTION

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1 to 12 The described embodiments are exemplary and intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0052] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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 cannot be understood as a limitation on the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] like Figures 1 to 3 As shown, an embodiment of the present invention provides a laser marking device, including a conveying device 10, a frame 20 and a laser 30. The conveying device 10 is installed on the frame 20 and is used to convey the object to be marked. Specifically, the conveying device 10 can be a synchronous belt 169 conveying module or a screw conveying module, and for large PCB board objects, two conveying modules can be used to convey in parallel.

[0056] Furthermore, the laser 30 is installed in the frame 20 and is located below the conveying device 10. The laser head 31 of the laser 30 is arranged corresponding to the conveying path 13 of the conveying device 10 to sequentially laser mark the lower end faces of each object to be marked conveyed by the conveying device 10. The number of lasers 30 can be one or more. Preferably, the number of lasers 30 is two, both of which are installed in the frame 20, and the laser heads 31 of the two lasers 30 are arranged corresponding to the conveying path 13. This can strike a balance between laser marking efficiency and manufacturing cost.

[0057] Furthermore, the frame 20 is also covered with a shell cover 21, and electrical equipment such as an industrial control computer (not shown) and a smoke collector (not shown) are installed in the shell cover 21. The industrial control computer is electrically connected to the laser 30 and the conveying device 10 to control the operation of the laser 30 and the conveying device 10, and the smoke collector can collect the smoke generated during the laser marking operation, and can make the smoke be discharged in time from the smoke exhaust port 212 provided on the top of the shell cover 21. A display module 60 and an input device 61 are also integrated and installed on one side of the shell cover 21 to enable the operator to input commands. An audible and visual alarm 213 can be installed on the top of the shell cover 21 to give an alarm in time when the laser marking equipment fails to operate. At the same time, the shell cover 21 can be provided with an inlet 211 and an outlet on the opposite sides of the conveying path 13 to facilitate the loading and unloading of the objects to be marked relative to the laser marking equipment.

[0058] The laser marking device provided by the embodiment of the present invention is further described below: The laser marking device of the present invention is provided with a conveying device 10 and a laser 30, and the laser head 31 of the laser 30 is arranged opposite to the conveying path 13 of the conveying device 10, so that the object to be marked can pass through the laser head 31 of the laser 30 in sequence under the conveying of the conveying device 10, thereby completing the laser marking operation. Since the conveying device 10 is installed on the frame 20, the laser 30 is installed in the frame 20, and the laser 30 is located below the conveying device 10, the laser head 31 of the laser 30 can perform laser marking operation on the bottom of the object to be marked, so that the object to be marked can complete the laser marking while maintaining its posture unchanged, avoiding the phenomenon that the electronic components installed on the upper end surface of the object to be marked are easily scratched with the external base surface due to the flipping of the object to be marked, thereby ensuring the safety of the object to be marked during laser marking, so that the laser marking operation can be carried out smoothly.

[0059] In another embodiment of the present invention, Figure 3 As shown, the laser marking device further includes a motion module 40, which includes an X-axis linear module 41 and a Y-axis linear module 42. The X-axis linear module 41 is installed in the frame 20, and the Y-axis linear module 42 is installed on the driving end of the X-axis linear module 41. The laser 30 is arranged on the driving end of the Y-axis linear module 42. Specifically, by arranging the X-axis linear module 41 and the Y-axis linear module 42 in the frame 20, the laser 30 can be driven by the X-axis linear module 41 and the Y-axis linear module 42 to achieve rapid adjustment of the relative position relative to the bottom of the object to be marked on a two-dimensional plane, thereby significantly improving the flexibility of the laser marking operation.

[0060] Preferably, the motion module 40 may further include a guide rail 44, which is spaced apart and arranged parallel to the X-axis linear module 41, and one end of the Y-axis linear module 42 away from the X-axis linear module 41 is slidably mounted on the guide rail 44. In this way, the Y-axis linear module 42 can be guided by both the X-axis linear module 41 and the guide rail 44 during operation, so that its motion trajectory is more accurate.

[0061] In another embodiment of the present invention, Figures 3 to 5 As shown, the motion module 40 further includes a Z-axis lifting device 43, which is mounted on the driving end of the Y-axis linear module 42, and the laser 30 is mounted on the driving end of the Z-axis lifting device 43. Specifically, by providing the Z-axis lifting device 43, the laser 30 can be driven by the Z-axis lifting device 43 to move closer to or farther from the object to be marked, thereby effectively adjusting the focal length of the laser beam acting on the object to be marked, which is beneficial to the accuracy of the laser marking operation.

[0062] In another embodiment of the present invention, Figures 3 to 5 As shown, the Z-axis lifting device 43 includes a support frame 431, a drive motor 432 and a lifting assembly 444. The support frame 431 is installed on the driving end of the Y-axis linear module 42, the lifting assembly 444 is installed in the support frame 431, the drive motor 432 is installed on one side of the support frame 431, and the output shaft of the drive motor 432 extends into the support frame 431 and cooperates with the lifting assembly 444 to drive the lifting assembly 444 to move along the Z-axis direction, and the laser 30 is installed on the lifting assembly 444. Specifically, when the Z-axis lifting device 43 is working, the output shaft of the drive motor 432 rotates and drives the lifting assembly 444 to move along the Z-axis direction, so that the laser 30 installed on the lifting assembly 444 can move with it to approach or move away from the object to be marked.

[0063] In another embodiment of the present invention, Figures 3 to 5 As shown, the output shaft of the driving motor 432 is inserted into the support frame 431 along the plane direction formed by the X-axis direction and the Y-axis direction and is in transmission cooperation with the lifting assembly 444. In this way, the driving motor 432 can make full use of the assembly space in the X-axis direction and the Y-axis direction, thereby significantly optimizing the assembly space in the Z-axis direction occupied by the Z-axis lifting device 43, thereby significantly reducing the overall height of the laser marking equipment and improving its adaptability to the working environment.

[0064] In another embodiment of the present invention, Figure 5As shown, the lifting assembly 444 includes a driving nut 433, a lifting screw 434, a supporting plate 435 and a plurality of guide members 436. The driving nut 433 is rotatably installed in the support frame 431 along the Z-axis direction. The lifting screw 434 and the driving nut 433 are threadedly matched. The driving nut 433 is sleeved with a first bevel gear, and the output shaft sleeve is provided with a second bevel gear. The output shaft is engaged with the second bevel gear and the first bevel gear to drive the driving nut 433 to rotate around the Z-axis direction. Each guide member 436 is installed on the support frame 431 along the Z-axis direction. The supporting plate 435 is rotatably installed on the top end of the lifting screw 434, and the supporting plate 435 is connected to each guide member 436. The laser 30 is installed on the supporting plate 435. Specifically, when the lifting assembly 444 is working, the output shaft of the driving motor 432 transmits power to the driving nut 433 through the meshing cooperation of the second bevel gear and the first bevel gear. Since the driving nut 433 is rotatably installed in the support frame 431 along the Z-axis direction, it can drive the lifting screw 434 threadedly matched with it to move along the Z-axis direction. In this way, the support plate 435 installed on the top of the lifting screw 434 can drive the laser 30 to move along the Z-axis direction. Due to the existence of the guide members 436, the support plate 435 will also avoid rotating along the lifting screw 434 under the limit of the guide members 436 while moving along the Z-axis direction, thereby achieving stable support for the laser 30. Furthermore, the lifting assembly 444 further includes a mounting plate 441, a cap member 442 and a first slide rail member 443. The mounting plate 441 is mounted on the lower end surface of the supporting plate 435 to enhance the structural strength of the supporting plate 435, and the cap member 442 is mounted on the supporting plate 435. The upper end of the lifting screw 434 is rotatably connected to the cap member 442. The first slide rail member 443 is mounted on one side of the support frame 431 along the Z-axis direction, and the sliding end of the first slide rail member 443 is connected to the mounting plate 441 to ensure the stability and accuracy of the movement of the mounting plate 441 along the Z-axis direction.

[0065] In another embodiment of the present invention, Figure 5As shown, the lifting assembly 444 also includes a connector 445, which is installed in the support frame 431, and the connector 445 has a first through hole 437 along the Z axis direction, the connecting block 111 is rotatably installed in the first through hole 437 through a bearing, and the connector 445 has a second through hole 438 connected to the first through hole 437 along the two-dimensional plane formed by the X axis direction and the Y axis direction, and the output shaft of the driving motor 432 is arranged in the second through hole 438. Specifically, the existence of the connector 445 provides an installation support space for the connecting block 111 on the one hand, and on the other hand, it also enables the driving nut 433 and the output shaft of the driving motor 432 to perform transmission cooperation in a relatively closed space, free from interference from external factors, thereby ensuring the working stability and reliability of the Z axis lifting device 43. In order to protect the output shaft of the driving motor 432 , it can be connected to the transition shaft 439 via a coupling 440 , and the second bevel gear can be sleeved on the transition shaft 439 , and the transition shaft 439 extends into the second through hole 438 to cooperate with the driving nut 433 .

[0066] In another embodiment of the present invention, Figure 6 As shown, the conveying device 10 includes a first conveying module 11 and a second conveying module 12 for conveying the object to be marked, and the first conveying module 11 and the second conveying module 12 are installed in parallel on the frame 20, and a conveying path 13 is formed between the first conveying module 11 and the second conveying module 12. Specifically, by setting the first conveying module 11 and the second conveying module 12, when the object to be marked is a large object such as a PCB board, the first conveying module 11 and the second conveying module 12 can be used to convey it at the same time, thereby realizing the stable conveying of the large object to be marked. When the object to be marked is a small object, the first conveying module 11 and the second conveying module 12 can independently carry out bidirectional conveying on the small object, and the laser 30 can also be set corresponding to the first conveying module 11 and the second conveying module 12 to realize the efficient marking operation of the small object.

[0067] In another embodiment of the present invention, Figure 6As shown, the conveying device 10 also includes two lifting devices 14, and the two lifting devices 14 each include a lifting cylinder 141 and a lifting assembly 142. The two lifting cylinders 141 are respectively installed on the first conveying module 11 and the second conveying module 12. The lifting assembly 142 is connected to the piston rod of the corresponding lifting cylinder 141 and is located between the first conveying module 11 and the second conveying module 12. The lifting assembly 142 is arranged corresponding to the laser head 31 and is used to lift and limit the object to be marked that reaches above the laser head 31. Specifically, by providing a lifting cylinder 141 and a lifting assembly 142, when the object to be marked moves to above the laser head 31, the lifting assembly 142 can lift the object to be marked, so that the object to be marked is separated from the contact with the conveying module, and then remains stationary relative to the laser head 31. In this way, laser marking of the object to be marked can be achieved without shutting down the conveying module. After the object to be marked is laser marked, it can be quickly conveyed by the normally operating conveying module. This significantly improves the conveying efficiency of the object to be marked, and also improves the overall efficiency of the laser marking process.

[0068] In another embodiment of the present invention, Fig. 9 As shown, the two lifting assemblies 142 each include a connecting plate 143 and a lifting plate 144, the two lifting cylinders 141 are respectively installed along the Z-axis direction on the side of the first conveying module 11 and the second conveying module 12 away from each other, the two connecting plates 143 have a first side and a second side arranged relative to the first side, the first sides of the two connecting plates 143 are respectively connected to the piston rods of the two lifting cylinders 141, the second sides of the two connecting plates 143 respectively span the first conveying module 11 and the second conveying module 12 and both extend between the first conveying module 11 and the second conveying module 12, and the two lifting plates 144 are respectively installed on the upper ends of the second sides of the two connecting plates 143 and are both used to lift and limit the objects to be marked. Specifically, by installing the two lifting cylinders 141 along the Z-axis direction on the side of the first conveying module 11 and the second conveying module 12 away from each other, and then using the two connecting plates 143 as transition connecting pieces between the lifting plates 144 and the lifting cylinders 141, the assembly space on the side of the first conveying module 11 and the second conveying module 12 away from each other is fully utilized, and the two lifting cylinders 141 are stably installed, avoiding the assembly positions of the two lifting cylinders 141 from occupying the assembly space between the first conveying module 11 and the second conveying module 12 to avoid interfering with the conveying path 13 of the object to be marked, and on the other hand, avoiding occupying the assembly space below the first conveying module 11 and the second conveying module 12, thereby significantly saving the Z-axis assembly space of the conveying device 10 to avoid increasing the overall height of the conveying device 10.

[0069] In another embodiment of the present invention, Fig. 9As shown, both lifting assemblies 142 further include a second slide rail 145, which is installed between the first conveying module 11 or the second conveying module 12 and the corresponding lifting plate 144. Specifically, by installing the second slide rail 145 between the first conveying module 11 or the second conveying module 12 and the corresponding lifting plate 144, the lifting plate 144 can maintain a stable motion posture under the guidance of the second slide rail 145 during the movement along the Z-axis direction, thereby achieving stable lifting and supporting of the object to be marked.

[0070] In another embodiment of the present invention, Figure 6 As shown, the conveying device 10 also includes two limit members 15, which are respectively installed on the first conveying module 11 and the second conveying module 12, one end of each of the two limit members 15 extends between the first conveying module 11 and the second conveying module 12 and is respectively located above the two lifting assemblies 142, and a clamping space for clamping the object to be marked is formed between the limit members 15 and the corresponding lifting assemblies 142. Specifically, by setting two limit members 15, and making the two limit members 15 correspond to the two lifting assemblies 142, when the object to be marked is lifted by the lifting assemblies 142, it can be firmly clamped under the limiting action of the limit members 15, thereby achieving accurate limiting of the object to be marked relative to the laser head 31, and further ensuring the accuracy of laser marking.

[0071] In another embodiment of the present invention, Figure 6 , Figure 8 and Fig.11As shown, the conveying device 10 also includes a width adjustment mechanism 16, which includes a width adjustment motor 161, a first transmission screw 162 and a second transmission screw 163. The width adjustment motor 161 is installed on the frame 20, and the first ends of the first transmission screw 162 and the second transmission screw 163 are both connected to the output shaft of the width adjustment motor 161. The opposite ends of the first conveying module 11 are both installed with connecting blocks 111, and the two connecting blocks 111 are both provided with threaded holes. The second ends of the first transmission screw 162 and the second transmission screw 163 are respectively penetrated through the two threaded holes and are both rotatably connected to the second conveying module 12. Specifically, by connecting the output shaft of the width adjustment motor 161 to the transmission screw, the second end of the transmission screw is penetrated through the connecting block 111 of the first output module 11 and is rotatably connected to the second conveying module 12. In this way, when the conveying device 10 needs to convey objects to be marked of different widths, the width adjustment motor 161 can drive the transmission screw to rotate. Since the connecting block 111 is threadedly matched with the transmission screw, the first conveying module 11 can move in a direction away from or close to the second conveying module 12 under the drive of the transmission screw, thereby adjusting the distance between the first conveying module 11 and the second conveying module 12, so that objects to be marked of different widths can be accommodated between the first conveying module 11 and the second conveying module 12.

[0072] In another embodiment of the present invention, Figure 6 , Figure 8 and Fig.11 As shown, the width adjustment mechanism 16 also includes a transmission assembly 166, which includes a driving wheel 167, a driven wheel 168 and a synchronous belt 169. The driving wheel 167 is installed at the first end of the first transmission screw 162, the driven wheel 168 is installed at the first end of the second transmission screw 163, and the synchronous belt 169 is sleeved between the driving wheel 167 and the driven wheel 168. The first end of the first transmission screw 162 is connected to the output shaft of the width adjustment motor 161. Specifically, by providing the driving wheel 167, the driven wheel 168 and the synchronous belt 169, when the width adjustment motor 161 drives the first transmission screw 162 to rotate, the driving wheel 167 can output the driving force to the driven wheel 168 through the synchronous belt 169, and then drive the second transmission screw 163 to rotate, so as to realize that the two transmission screws synchronously drive the first conveying module 11 to move relative to the second transmission module, so that the stability of the movement of the first conveying module 11 relative to the second transmission module is significantly improved.

[0073] In another embodiment of the present invention, Figure 7As shown, the width adjustment mechanism 16 also includes a belt tensioning mechanism 17, which includes an assembly block 171, an adjustment block 172, an adjustment wheel 173 and two belt pressure rollers 174. The assembly block 171 is installed on the frame 20, and one side of the assembly block 171 is provided with a plurality of first screw holes along the Z-axis direction, and one side of the adjustment block 172 is provided with a plurality of second screw holes along the Z-axis direction. The adjustment block 172 is installed on the assembly block 171 by respectively passing through the first screw holes and the second screw holes in sequence through the bolts, and the adjustment wheel 173 is rotatably installed on the adjustment block 172. The two belt pressure rollers 174 are installed on the assembly block 171 and are respectively located on opposite sides of the adjustment wheel 173, and the synchronous belt 169 is wrapped around the lower wheel surfaces of the two belt pressure rollers 174 and the upper wheel surface of the adjustment wheel 173. Specifically, by installing the adjusting wheel 173 on the adjusting block 172, and the adjusting block 172 can be moved along the Z axis by adjusting the installation position relative to the assembly block 171, the adjusting wheel 173 can also be moved along the Z axis. Then, since the synchronous belt 169 is wound around the lower wheel surface of the two pressure rollers 174 and the upper wheel surface of the adjusting wheel 173, when the tightness of the synchronous belt 169 needs to be adjusted, the adjusting wheel 173 can be adjusted to move along the Z axis direction, and then the spacing of the adjusting wheel 173 relative to the two pressure rollers 174 can be adjusted. In this way, the synchronous belt 169 wound around the lower wheel surface of the two pressure rollers 174 and the upper wheel surface of the adjusting wheel 173 can be relaxed or tightened.

[0074] In another embodiment of the present invention, Figure 8 As shown, the width adjustment mechanism 16 also includes a support block 164 and a guide rod 165 parallel to the transmission screw, the support block 164 is installed on the frame 20, the first end of the guide rod 165 is connected to the support block 164, and the two connecting blocks 111 are provided with a through hole, and the second end of the guide rod 165 is passed through the through hole and connected to the second conveying module 12. Specifically, by arranging the guide rod 165, when the first conveying module 11 moves relative to the second conveying module 12, the stability and accuracy of its movement can be maintained under the guiding effect of the guide rod 165. Preferably, the number of the guide rod 165 is three, which are respectively arranged at the two ends and the middle position along the length direction of the first conveying module 11 and the second conveying module 12, so that the guidance of the above-mentioned motion process can be realized from three dimensions, further ensuring the accuracy and stability of the first conveying module 11 moving relative to the second conveying module 12.

[0075] In another embodiment of the present invention, Figures 10-12As shown, the conveying device 10 also includes two limiting mechanisms 50, and the two limiting mechanisms 50 both include a lifting cylinder 52 and a limiting block 54. The two lifting cylinders 52 are respectively installed along the Z-axis direction on the first conveying module 11 and the second conveying module 12 facing each other and are both located in front of the jacking component 142 along the conveying path 13. The two limiting blocks 54 are respectively installed on the piston rods of the two driving cylinders and can extend into the conveying path 13 under the drive of the driving cylinders to intercept the object to be marked. Specifically, the front of the jacking component 142 along the conveying path 13 specifically refers to the side of the jacking component 142 away from the conveying direction of the first conveying module 11 and the second conveying module 12. By providing the lifting cylinder 52 and the stopper 54, when the lifting assembly 142 is lifting the last object to be marked, the next object to be marked can be prevented from entering the lifting assembly 142 area by the stopper 54, thus ensuring the orderliness of the marking operation and ensuring the efficient and orderly progress of the automated marking operation. At the same time, a number of sensors 18 are also installed at the corresponding positions of the first conveying module 11 or the second conveying module 12 to monitor and control the conveying position of the object to be marked.

[0076] In another embodiment of the present invention, Figures 10-12 As shown, the two limiting mechanisms 50 also include a mounting frame 51 and a guide sleeve 53. The two mounting frames 51 are respectively mounted on the first conveying module 11 and the second conveying module 12 facing each other. The two lifting cylinders 52 are respectively mounted on the two mounting frames 51. The two guide sleeves 53 are respectively mounted on the two mounting frames 51 along the Z-axis direction. The two limiting blocks 54 are respectively arranged through the two guide sleeves 53. Specifically, by providing the guide sleeves 53, the two limiting blocks 54 can be guided by the two guide sleeves 53 to ensure the accuracy and stability of their movement.

[0077] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser marking device, characterized in that: It comprises a conveying device, a frame and a laser, wherein the conveying device is installed on the frame and used to convey the objects to be marked, the laser is installed in the frame and located below the conveying device, and the laser head of the laser is arranged corresponding to the conveying path of the conveying device to sequentially laser mark the lower end faces of the objects to be marked conveyed by the conveying device; The conveying device comprises a first conveying module and a second conveying module for conveying the object to be marked; The conveying device also includes a width adjustment mechanism, which includes a width adjustment motor, a first transmission screw and a second transmission screw. The width adjustment motor is installed on the frame, and the first end of the first transmission screw and the first end of the second transmission screw are both connected to the output shaft of the width adjustment motor. The first conveying module is installed with connecting blocks at both opposite ends along its length direction, and threaded holes are provided on the two connecting blocks. The second end of the first transmission screw and the second end of the second transmission screw are respectively passed through the two threaded holes and are rotatably connected to the second conveying module. The laser marking device also includes a motion module, which includes an X-axis linear module, a Y-axis linear module and a Z-axis lifting device; The Z-axis lifting device includes a support frame, a drive motor and a lifting assembly, wherein the support frame is mounted on the drive end of the Y-axis linear module, the lifting assembly is mounted in the support frame, the drive motor is mounted on one side of the support frame, and the output shaft of the drive motor extends into the support frame and cooperates with the lifting assembly to drive the lifting assembly to move along the Z-axis direction, and the laser is mounted on the lifting assembly; The lifting assembly includes a driving nut, a lifting screw, a supporting plate and a plurality of guide members, the driving nut is rotatably installed in the support frame along the Z-axis direction, the lifting screw and the driving nut are threadedly matched, the driving nut sleeve is provided with a first bevel gear, the output shaft sleeve is provided with a second bevel gear, the output shaft is meshed with the second bevel gear and the first bevel gear to drive the driving nut to rotate around the Z-axis direction, each of the guide members is installed on the support frame along the Z-axis direction, the supporting plate is rotatably installed on the top end of the lifting screw, and the supporting plate is connected to each of the guide members, and the laser is installed on the supporting plate; The lifting assembly further comprises a mounting plate, a cap member and a first slide rail member, the laser is mounted on the supporting plate, the mounting plate is mounted on the lower end surface of the supporting plate, the cap member is mounted on the supporting plate, the upper end of the lifting screw is rotatably connected to the cap member, the first slide rail member is mounted on one side of the support frame along the Z-axis direction, and the sliding end of the first slide rail member is connected to the mounting plate; The lifting assembly also includes a connector, which is installed in the support frame and has a first through hole in the Z axis direction. The connecting block is rotatably installed in the first through hole through a bearing. The connector has a second through hole in communication with the first through hole in a two-dimensional plane formed by the X axis direction and the Y axis direction. The output shaft of the drive motor is arranged in the second through hole; wherein the output shaft of the drive motor is connected to the transition shaft through a coupling, the second bevel gear is sleeved on the transition shaft, and the transition shaft extends into the second through hole to cooperate with the drive nut; The conveying device also includes two lifting devices, and the two lifting devices each include a lifting cylinder and a lifting assembly; The conveying device also includes two limiting mechanisms, each of which includes a lifting cylinder and a limiting block. The two lifting cylinders are respectively installed on the first conveying module and the second conveying module along the Z-axis direction on one side facing each other and are both located in front of the lifting assembly along the conveying path. The two limiting blocks are respectively installed on the piston rods of the two lifting cylinders and can extend into the conveying path under the drive of the lifting cylinders to intercept the object to be marked. The two limiting mechanisms also include a mounting frame and a guide sleeve. The two mounting frames are respectively installed on the side of the first conveying module and the second conveying module facing each other. The two lifting cylinders are respectively installed on the two mounting frames. The two guide sleeves are respectively installed on the two mounting frames along the Z-axis direction. The two limiting blocks are respectively passed through the two guide sleeves.

2. The laser marking device according to claim 1, characterized in that: The X-axis linear module is installed in the frame, the Y-axis linear module is installed on the driving end of the X-axis linear module, and the laser is arranged on the driving end of the Y-axis linear module.

3. The laser marking device according to claim 2, characterized in that: The Z-axis lifting device is installed on the driving end of the Y-axis linear module, and the laser is installed on the driving end of the Z-axis lifting device.

4. The laser marking device according to any one of claims 1 to 3, characterized in that: The first conveying module and the second conveying module are installed in parallel on the frame, and the conveying path is formed between the first conveying module and the second conveying module.

5. The laser marking device according to claim 4, characterized in that: The two lifting cylinders are respectively installed on the first conveying module and the second conveying module, the lifting assembly is connected to the piston rod of the corresponding lifting cylinder and is located between the first conveying module and the second conveying module, and the lifting assembly is arranged corresponding to the laser head and is used to lift and limit the object to be marked that reaches above the laser head.

6. The laser marking device according to claim 5, characterized in that: The conveying device also includes two limit members, which are respectively installed on the first conveying module and the second conveying module. One end of the two limit members extends between the first conveying module and the second conveying module and is respectively located above the two lifting components. A clamping space for clamping the object to be marked is formed between the limit members and the corresponding lifting components.

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