A laser marking production line and working method thereof

Abstract

The present invention relates to a laser marking production line, including a frame, a front roller conveyor, a loading unit, a laser marking machine, a carrying unit, a discharge unit and a rear roller conveyor. The front roller conveyor and the rear roller conveyor are used to realize the feeding and output of the material frame respectively. When the loading unit is displaced to the lower limit position, it is aligned with the front roller conveyor. When the discharge unit is displaced to the lower limit position, it is aligned with the rear roller conveyor. The carrying unit drags the material frame for translational movement. When the carrying unit is displaced to the front limit position, it can be aligned with the loading unit. When the carrying unit is displaced to the rear limit position, it can be aligned with the discharge unit. When the material frame is translated under the action of the carrying unit, the laser marking machine is started to realize the laser marking operation. In addition, the present invention also discloses a working method of the laser marking production line.

Description

Technical Field

[0001] The invention relates to the technical field of non-standard equipment manufacturing, in particular to a laser marking production line and a working method thereof. Background Art

[0002] Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method that uses high-energy-density lasers to partially irradiate the workpiece, causing the surface material to vaporize or undergo a chemical reaction that changes color, thereby leaving a permanent mark. Laser marking can produce a variety of text, symbols, and patterns.

[0003] Taking the outer shell of a medium-voltage electrical circuit breaker as an example, it is usually marked with the help of a laser marking machine. The laser marking machine includes a frame, a flat plate, a first power unit, a laser marking head and a second power unit. The flat plate is supported by the frame and performs a planar displacement movement under the driving force of the first power unit; the laser marking head is also supported by the frame and moves along the height direction under the driving force of the second power unit. After the outer shell of the circuit breaker is clamped relative to the flat plate, the laser marking head realizes the etching of the mark under the coordinated action of the first power unit and the second power unit. However, the following problems occur in the actual operation of the laser marking machine: 1) The required auxiliary time is long, which means that each time a laser marking action is completed, the circuit breaker housing needs to be disassembled and clamped, resulting in extremely low processing efficiency of the laser marking machine; 2) The standby time of the laser marking machine is long, which leads to its low overall utilization rate; 3) At least one staff member is required for each workstation, which requires a lot of manpower costs, resulting in high marking costs for the circuit breaker housing; 4) The accuracy of the clamping position of the circuit breaker housing has a crucial influence on the forming weight of the mark. However, the operating experience of the workers and the emotional and psychological fluctuations will affect the accuracy of the clamping position, resulting in the phenomenon of unqualified forming marks on the circuit breaker housing. Therefore, it is urgent for technical personnel to solve the above problems. Summary of the invention

[0004] Therefore, in view of the above-mentioned existing problems and defects, the designers of the present invention collected relevant information, conducted multiple evaluations and considerations, and continued to experiment and modify after many years of R&D experience in this industry, which ultimately led to the emergence of the laser marking production line.

[0005] In order to solve the above technical problems, the present invention relates to a laser marking production line, including a frame, a front roller conveyor, a loading unit, a laser marking machine, a carrying unit, a discharge unit and a rear roller conveyor. The front roller conveyor and the rear roller conveyor are arranged side by side along the front-to-back direction, and are arranged directly below the frame to respectively realize the feeding and output of the material frame. The loading unit is arranged directly to the right of the front roller conveyor, and it includes a loading support frame, a support assembly and a first power unit. The loading support frame is supported by the frame. The support assembly is arranged directly to the left of the loading support frame, and moves back and forth in the up and down directions under the driving force of the first power unit to realize the position lifting of the material frame. When the support assembly is displaced to the lower limit position, it is flush with the front roller conveyor. The discharge unit is arranged directly to the right of the rear roller conveyor, and it includes a discharge support frame, a discharge assembly and a second power unit. The unloading support frame is supported by the frame. The unloading assembly is arranged on the left side of the unloading support frame, and moves back and forth in the up and down direction under the driving force of the second power unit to lower the position of the material frame. When the unloading assembly is displaced to the lower limit position, it is flush with the rear roller conveyor. The carrier unit is arranged directly above the frame, and includes a carrier assembly, a third power unit and a fourth power unit. The third power unit is directly fixed on the upper plane of the frame to drive the fourth power unit and the carrier assembly to perform reciprocating translational motion along the front and back directions. The fourth power unit drives the carrier assembly to perform translational motion along the left and right directions. When the carrier assembly is displaced to the front limit position, it can be flush with the support assembly to transfer the material frame from the support assembly to the carrier assembly. When the carrier assembly is displaced to the rear limit position, it can be flush with the unloading assembly, and the fourth power unit is activated to transfer the material frame from the carrier assembly to the unloading assembly. The laser marking machine is arranged above the carrier unit. When the material frame performs translational movement under the driving force of the carrier unit, the laser marking machine is started to perform laser marking operation on the laser-marked parts.

[0006] As a further improvement of the technical solution of the present invention, the material support assembly includes a material support frame, a transition roller conveyor line, a left-mounted limiting unit and a right-mounted pressing unit. The material support frame is directly driven by the first power unit. The transition roller conveyor line is fixed on the material support frame. The left-mounted limiting unit and the right-mounted pressing unit are respectively fixed on the transition roller conveyor line and the material support frame, and are arranged opposite to each other along the left and right directions. When the material frame is parked in place relative to the transition roller conveyor line, the left-mounted limiting unit is actuated to limit the left side wall of the material frame. The right-mounted pressing unit is actuated and moves toward the left-mounted limiting unit until the right side wall of the material frame is pressed.

[0007] As a further improvement of the technical solution of the present invention, the left-positioned limiting unit includes a limiting plate and a fifth power unit. The limiting plate can freely pass through the transition roller conveyor line along the up and down direction under the driving force of the fifth power unit.

[0008] As a further improvement of the technical solution of the present invention, the right-mounted pressing unit includes a pressing plate and a sixth power unit. The pressing plate is arranged on the left side of the bracket and reciprocates in the left and right directions under the driving force of the sixth power unit to achieve compression / relaxation of the right side wall of the material frame.

[0009] As a further improvement of the technical solution of the present invention, the carrier assembly includes a left clamping arm, a right clamping arm and a finger cylinder. The finger cylinder is directly driven by the third power unit. The left clamping arm and the right clamping arm respectively realize a fixed connection with the left finger and the right finger of the finger cylinder in a one-to-one correspondence. When the finger cylinder is actuated, the left clamping arm moves toward / away from the right clamping arm to realize the clamping / relaxation of the material frame.

[0010] As a further improvement of the technical solution of the present invention, the carrying assembly also includes a left-mounted guide portion and a right-mounted guide portion symmetrically arranged on the left and right sides of the finger cylinder. The left-mounted guide portion includes a left-mounted slide rail slider assembly and a left-mounted load-bearing member. The left-mounted load-bearing member is fixed as a whole with the left-mounted clamping arm, and performs directional sliding movement along the front-to-back direction under the action of the left-mounted slide rail slider assembly. The right-mounted guide portion includes a right-mounted slide rail slider assembly and a right-mounted load-bearing member. The right-mounted load-bearing member is fixed as a whole with the right-mounted clamping arm, and performs directional sliding movement along the front-to-back direction under the action of the right-mounted slide rail slider assembly.

[0011] As a further improvement of the technical solution of the present invention, the laser marking production line also includes a defective product sorting unit. The defective product sorting unit is used in conjunction with the carrier unit and is arranged directly above the frame and behind the carrier unit.

[0012] As a further improvement of the technical solution of the present invention, the defective product sorting unit includes a sorting support frame, a seventh power unit, an eighth drive unit, a ninth drive unit, a mounting frame and a vacuum adsorption unit. The vacuum adsorption unit is used to adsorb defective products in the laser-marked parts, and is fixed on the mounting frame. When the seventh power unit, the eighth drive unit, and the ninth drive unit are in action, the mounting frame and the vacuum adsorption unit are respectively dragged to perform displacement movement along the front-to-back direction, the left-to-right direction, and the up-down direction.

[0013] As a further improvement of the technical solution of the present invention, the defective product sorting unit further includes a high-speed CCD camera. The high-speed CCD camera is fixed on the mounting frame and is arranged side by side with respect to the vacuum adsorption part along the left-right direction.

[0014] By adopting the above technical solution, the laser marking production line has at least the following advantages:

[0015] a) Multiple laser-marked parts are arranged in order in the material frame, and are transported and printed as a whole, thus eliminating the need for multiple clamping operations in traditional laser marking operations. This reduces the auxiliary time on the one hand, and the standby time of the laser marking machine on the other hand. Combining the above two factors, the laser marking production line is effectively ensured to have a high production efficiency;

[0016] b) A batch of laser-marked parts only needs to be clamped once, which is more conducive to ensuring that the laser-marked parts have good position accuracy relative to the laser marking machine, thereby ensuring the clarity and regularity of the marking mark;

[0017] c) Greatly reduces the number of staff required, thereby reducing human resource costs and saving marking costs.

[0018] In addition, the present invention also discloses a working method of a laser marking production line, the steps of which are roughly as follows:

[0019] 1) Arrange the parts to be laser marked in the material frame in order;

[0020] 2) Place the material frame as a whole on the front roller conveyor. When the front roller conveyor starts, the material frame is moved horizontally from left to right;

[0021] 3) While step 2 is being executed, the supporting assembly moves downward under the driving force of the first power unit until it reaches its lower limit position, at which point the supporting assembly is flush with the front roller conveyor;

[0022] 4) The front roller conveyor continues to move to transfer the material frame from the front roller conveyor to the support assembly;

[0023] 5) The first power unit is started for the second time, driving the supporting assembly and the material frame to move upward until the upper limit position, at which time the supporting assembly is flush with the carrying assembly;

[0024] 6) The transport assembly moves to transfer the material frame from the support assembly to the transport assembly;

[0025] 7) When the carrier assembly drags the material frame to perform translational motion under the coordinated driving force of the third power unit and the fourth power unit, the laser marking machine is started to complete the printing and forming of the mark on the laser-marked part;

[0026] 8) After the imprint is printed, the carrier assembly continues to move backward in translation under the driving force of the third power unit until it reaches its rear limit position;

[0027] 9) The fourth power unit is started to drive the carrier assembly to move rightward in translation until it reaches the right limit position. At the same time, the unloading assembly moves upward under the driving force of the second power unit until it is critically supported on the bottom wall of the material frame;

[0028] 10) The carrier assembly releases the grip on the material frame to transfer the material frame from the carrier assembly to the unloading assembly;

[0029] 11) The second power unit is started for the second time to drag the unloading assembly together with the material frame to move downward until the lower limit position. At this time, the unloading assembly is flush with the rear roller conveyor;

[0030] 12) The rear roller conveyor starts to move the entire material frame out of the laser marking production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 work.

[0032] Figure 1 It is a three-dimensional schematic diagram of a laser marking production line in the present invention from one viewing angle.

[0033] Figure 2 It is a three-dimensional schematic diagram of a laser marking production line in the present invention from one viewing angle (after hiding the frame).

[0034] Figure 3 yes Figure 2 Top view of the .

[0035] Figure 4 It is a three-dimensional schematic diagram of a feeding unit in the laser marking production line of the present invention from one viewing angle.

[0036] Figure 5 yes Figure 4 A partial enlarged view of I.

[0037] Figure 6 It is a three-dimensional schematic diagram of another viewing angle of the feeding unit in the laser marking production line of the present invention.

[0038] Figure 7 yes Figure 6 A partial enlarged view of II.

[0039] Figure 8 It is a three-dimensional schematic diagram of a laser marking machine in the laser marking production line of the present invention.

[0040] Fig. 9 It is a three-dimensional schematic diagram of a carrier unit in the laser marking production line of the present invention from one viewing angle.

[0041] Fig.10 It is a three-dimensional schematic diagram of another viewing angle of the carrier unit in the laser marking production line of the present invention.

[0042] Fig.11 yes Fig. 9 A partial enlarged view of III.

[0043] Fig.12 yes Fig. 9 A partial enlarged view of IV.

[0044] Fig.13 It is a three-dimensional schematic diagram of a discharge unit in the laser marking production line of the present invention.

[0045] Fig.14 It is a three-dimensional schematic diagram of another viewing angle of the laser marking production line in the present invention.

[0046] Fig.15 It is a stereoscopic schematic diagram of a defective product sorting unit in the laser marking production line of the present invention from one viewing angle.

[0047] Fig.16 It is a three-dimensional schematic diagram of another viewing angle of the defective product sorting unit in the laser marking production line of the present invention.

[0048] 1-frame; 2-front roller conveyor; 3-feeding unit; 31-feeding support frame; 32-supporting assembly; 321-supporting frame; 322-transition roller conveyor line; 323-left limit unit; 3231-limit plate; 3232-fifth power unit; 324-right pressing unit; 3241-pressing plate; 3242-sixth power unit; 33-first power unit; 4-laser marking machine; 5-carrying unit; 51-carrying assembly; 511-left clamping arm; 512-right clamping arm; 513-finger cylinder; 514-left guide unit; 5 141-left slide rail slider assembly; 5142-left load-bearing member; 515-right guide part; 5151-right slide rail slider assembly; 5152-right load-bearing member; 52-third power unit; 53-fourth power unit; 6-unloading unit; 61-unloading support frame; 62-unloading assembly; 63-second power unit; 7-rear roller conveyor; 8-defective product sorting unit; 81-sorting support frame; 82-seventh power unit; 83-eighth drive unit; 84-ninth drive unit; 85-installation frame; 86-vacuum adsorption unit; 87-high-speed CCD camera. DETAILED DESCRIPTION

[0049] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "left", "right", "up", "down", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0050] In order to facilitate those skilled in the art to fully understand the technical solutions disclosed in the present invention, the present invention is further described in detail below in conjunction with specific embodiments. Figure 1 , Figure 2 , Figure 3 The three-dimensional schematic diagram and the top view of the laser marking production line in the present invention in two different states under the same viewing angle are respectively shown. It can be seen that it is mainly composed of a frame 1, a front roller conveyor 2, a feeding unit 3, a laser marking machine 4, a carrying unit 5, a discharging unit 6 and a rear roller conveyor 7. Among them, the front roller conveyor 2 and the rear roller conveyor 7 are arranged side by side along the front and rear directions, and are arranged directly below the frame 1 to respectively realize the feeding and output of the material frame. The feeding unit 3 is arranged to the right of the front roller conveyor 2, and it includes a feeding support frame 31, a supporting assembly 32 and a first power unit 33. The feeding support frame 31 is supported by the frame 1. The supporting assembly 32 is arranged on the left side of the feeding support frame 31, and under the driving force of the first power unit 33, it performs a reciprocating displacement movement along the up and down directions to realize the lifting of the position of the material frame. When the support assembly 32 is displaced to the lower limit position, it is aligned with the front roller conveyor 2. The unloading unit 6 is arranged on the right side of the rear roller conveyor 7, and includes a unloading support frame 61, a unloading assembly 62 and a second power unit 63. The unloading support frame 61 is supported by the frame 1. The unloading assembly 62 is arranged on the left side of the unloading support frame 61, and performs reciprocating translation movement along the up and down directions under the driving force of the second power unit 63 to achieve the lowering of the position of the material frame. When the unloading assembly 62 is displaced to the lower limit position, it is aligned with the rear roller conveyor 7. The carrying unit 5 is arranged directly above the frame 1, and includes a carrying assembly 51, a third power unit 52 and a fourth power unit 53. The third power unit 52 is directly fixed on the upper plane of the frame 1 to drive the fourth power unit 53 and the carrying assembly 51 to perform reciprocating translation movement along the front and back directions. The fourth power unit 53 drives the carrier assembly 51 to perform translational motion along the left and right directions. When the carrier assembly 51 is displaced to the front limit position, it can be aligned with the support assembly 32 to transfer the material frame from the support assembly 32 to the carrier assembly 51. When the carrier assembly 51 is displaced to the rear limit position, it can be aligned with the unloading assembly 62, and the fourth power unit 53 is activated to transfer the material frame from the carrier assembly 51 to the unloading assembly 62. Figure 8 ) is arranged above the carrier unit 5. When the material frame performs translational motion under the driving force of the carrier unit 5, the laser marking machine 4 is started to realize the laser marking operation on the laser-marked part.

[0051] The workflow of the above laser marking production line is roughly as follows:

[0052] Arrange the parts to be laser marked in order in the material frame;

[0053] 2) The material frame is placed as a whole on the front roller conveyor 2. When the front roller conveyor 2 is started, the material frame is carried to perform a translational movement from left to right;

[0054] 3) While step 2 is being executed, the supporting assembly 32 is displaced downward under the driving force of the first power unit 33 until it reaches its lower limit position, at which point the supporting assembly 32 is flush with the front roller conveyor 2;

[0055] 4) The front roller conveyor 2 continues to move to transfer the material frame from the front roller conveyor 2 to the support assembly 32;

[0056] 5) The first power unit 33 is started for the second time, driving the supporting assembly 32 and the material frame to move upward until the upper limit position, at which time the supporting assembly 32 is flush with the carrying assembly 51;

[0057] 6) The carrier assembly 51 is actuated to transfer the material frame from the support assembly 32 to the carrier assembly 51;

[0058] 7) When the carrier assembly 51 drags the material frame to perform translational motion under the coordinated driving force of the third power unit 52 and the fourth power unit 53, the laser marking machine 4 is started to complete the printing and forming of the mark on the laser-marked part;

[0059] 8) After the imprint is printed, the carrier assembly 51 continues to move backward in translation under the driving force of the third power unit 52 until it reaches its rear limit position;

[0060] 9) The fourth power unit 53 is started to drive the carrier assembly 51 to move rightward in translation until it reaches its right limit position. At the same time, the unloading assembly 62 moves upward under the driving force of the second power unit 63 until it is critically supported on the bottom wall of the material frame;

[0061] 10) The carrier assembly 51 releases the grip on the material frame to achieve the transfer of the material frame from the carrier assembly 51 to the unloading assembly 62;

[0062] 11) The second power unit 63 is started for the second time to drag the unloading assembly 62 together with the material frame to move downward until the lower limit position, at which time the unloading assembly 62 is flush with the rear roller conveyor 7;

[0063] 12) The rear roller conveyor 7 is activated to output the entire material frame from the laser marking production line.

[0064] From the above workflow, it can be clearly seen that the laser marking production line has at least the following advantages:

[0065] a) Multiple laser-marked parts are arranged in order in the material frame, and are transported and printed as a whole, thus eliminating the need for multiple clamping operations in traditional laser marking operations. This reduces the auxiliary time on the one hand, and the standby time of the laser marking machine on the other hand. Combining the above two factors, the laser marking production line is effectively ensured to have a high production efficiency;

[0066] b) A batch of laser-marked parts only needs to be clamped once, which is more conducive to ensuring that the laser-marked parts have good position accuracy relative to the laser marking machine, thereby ensuring the clarity and regularity of the marking mark;

[0067] c) Greatly reduces the number of staff required, thereby reducing human resource costs and saving marking costs.

[0068] As a further optimization of the above laser marking production line structure, such as Figure 4 As shown in , the support assembly 32 preferably includes a support frame 321, a transition roller conveyor line 322, a left-positioned limiting unit 323 and a right-positioned pressing unit 324. The support frame 321 is directly driven by the above-mentioned first power unit 33. The transition roller conveyor line 322 is fixed on the support frame 321. The left-positioned limiting unit 323 and the right-positioned pressing unit 324 are respectively fixed on the transition roller conveyor line 322 and the support frame 321, and are arranged oppositely along the left and right directions. During the actual operation of the laser marking production line, when the material frame is parked in place relative to the transition roller conveyor line 322, the left-positioned limiting unit 323 is actuated to limit the left side wall of the material frame. The right-positioned pressing unit 324 is actuated and moves toward the left-positioned limiting unit 322 until the right side wall of the material frame is pressed. In this way, on the one hand, the stability of the accumulated material frame itself is effectively ensured, ensuring the stable execution of the transfer process from the loading unit 3 to the carrying unit 5, and preventing the occurrence of the "dumping" phenomenon; on the other hand, by adopting the above-mentioned technical solution, the relative position of the material frame can also be adjusted in real time to ensure the accuracy of its position relative to the carrying unit 5, and ensure the smooth progress of the material picking operation of the carrying unit 5.

[0069] like Figure 6 , 7 As shown in , the left-positioned limiting unit 323 preferably includes a limiting plate 3231 and a fifth power unit 3232. The limiting plate 3231 can freely pass through the transition roller conveyor line 322 in the up and down direction under the driving force of the fifth power unit 3232. Figure 5 As shown in , the right-mounted pressing unit 324 includes a pressing plate 3241 and a sixth power unit 3242. The pressing plate 3241 is arranged on the left side of the support frame 321, and reciprocates and translates along the left and right directions under the driving force of the sixth power unit 3242 to achieve the compression / relaxation of the right side wall of the material frame. When the material frame stops relative to the transition roller conveyor line 322, the limiting plate 3231 first moves upward under the driving force of the fifth power unit 3232 to limit the position of the left side wall of the material frame; then, the pressing plate 3241 moves to the left under the driving force of the sixth power unit 3242 until it presses against the right side wall of the material frame. In the process of the pressing plate 3241 pressing against the material frame, the relative position of the material frame is adjusted.

[0070] Fig.13 The 3D schematic diagram of the unloading unit in the laser marking production line of the present invention is shown. It can be seen that the design structure of the unloading unit 6 is similar to that of the loading unit 3, and the working principle is also substantially the same.

[0071] It is known that the carrying assembly 51 can adopt a variety of design structures to achieve the clamping and carrying of the material frame. However, an implementation scheme that is easy to implement and easy to maintain in the later stage is recommended here, as follows: Fig. 9 As shown in the figure, the carrier assembly 51 includes a left clamping arm 511, a right clamping arm 512 and a finger cylinder 513. The finger cylinder 513 is directly driven by the third power unit 52. The left clamping arm 511 and the right clamping arm 512 respectively realize the fixed connection with the left finger and the right finger of the finger cylinder 513 in a one-to-one correspondence. When the finger cylinder 513 is in motion, the left clamping arm 511 moves toward / backward relative to the right clamping arm 512 to achieve the clamping / relaxation of the material frame. In the process of clamping the material frame, the left clamping arm 511 and the right clamping arm 512 are used to respectively support the front and rear extension edges of the material frame, that is, the structural features of the material frame are well utilized to achieve the clamping of the material frame itself, which greatly simplifies the design structure of the carrier assembly 51, makes the clamping more stable and reliable, and facilitates the subsequent release operation of the material frame.

[0072] In the actual operation of the carrier assembly 51, it is found that the orientation of the left clamping arm 511 and the right clamping arm 512 has a crucial influence on the stability of the material frame clamping and the accuracy of the clamping position. Fig.10 , 11As shown in Figures 1 and 12, the carrier assembly 51 is additionally provided with a left-mounted guide portion 514 and a right-mounted guide portion 515 according to the actual application scenario, and they are symmetrically arranged on the left and right sides of the finger cylinder 513. The left-mounted guide portion 514 includes a left-mounted slide rail slider assembly 5141 and a left-mounted load-bearing member 5142. The left-mounted load-bearing member 5142 is fixed as a whole with the left-mounted clamping arm 511, and performs directional sliding movement along the front-to-back direction under the action of the left-mounted slide rail slider assembly 5141. The right-mounted guide portion 515 includes a right-mounted slide rail slider assembly 5151 and a right-mounted load-bearing member 5152. The right-mounted load-bearing member 5152 is fixed as a whole with the right-mounted clamping arm 512, and performs directional sliding movement along the front-to-back direction under the action of the right-mounted slide rail slider assembly 5151.

[0073] It is known that when laser marking is performed on parts to be marked, some defective products are inevitably produced, for example, the marking mark is not clear or the mark is not effectively formed. In order to prevent defective products from flowing into the next process, the more common operation method is to use manual sorting. However, workers are prone to fatigue when repeating the same action for a long time during the process, which leads to the occurrence of wrong picking and missing picking, and the labor cost is also a considerable expense. In view of this, this embodiment provides a preferred solution, such as Figure 1 , 2 As shown in , the laser marking production line is additionally provided with a defective product sorting unit 8. The defective product sorting unit 8 is used in conjunction with the carrier unit 5 and is arranged directly above the frame 1 and behind the carrier unit 5. Fig.14 , 15 As shown in Figures 1 and 16, the defective product sorting unit 8 includes a sorting support frame 81, a seventh power unit 82, an eighth drive unit 83, a ninth drive unit 84, a mounting frame 85, and a vacuum adsorption unit 86. The vacuum adsorption unit 86 is used to adsorb defective products in the laser-marked parts, and is fixed on the mounting frame 85. When the seventh power unit 82, the eighth drive unit 83, and the ninth drive unit 84 are in motion, the mounting frame 85 together with the vacuum adsorption unit 86 are respectively dragged to perform displacement motion along the front-to-back direction, the left-to-right direction, and the up-down direction (such as Fig.16 ).

[0074] Finally, it should be noted that, in order to realize the automatic detection and identification of defective products, the good product sorting unit 8 is additionally provided with a high-speed CCD camera 87. The high-speed CCD camera 87 is fixed on the mounting frame 1 and is arranged side by side with respect to the vacuum adsorption part 86 along the left and right direction (such as Fig.16As shown in ). During the process of the laser-marked part being carried by the carrier unit 5, the barcode appearance image of the laser-marked part surface is captured in real time by means of the high-speed CCD camera 87, and compared with the standard character library to determine whether the quality of the code on the laser-marked part is qualified. When it is determined that the quality of the code on a certain laser-marked part is unqualified, a start signal is promptly sent to the defective product sorting unit 8 to start the vacuum adsorption unit 86 to remove the defective products from the laser-marked parts.

[0075] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser marking production line, characterized in that: It includes a frame, a front roller conveyor, a loading unit, a laser marking machine, a carrying unit, a unloading unit and a rear roller conveyor; the front roller conveyor and the rear roller conveyor are arranged side by side along the front-to-back direction, and are arranged directly below the frame to respectively realize the feeding and output of the material frame; the loading unit is arranged directly to the right of the front roller conveyor, and includes a loading support frame, a supporting assembly and a first power unit; the loading support frame is supported by the frame; the supporting assembly is arranged on the loading support frame The first power unit is arranged on the left side of the unloading frame, and moves back and forth in the up and down direction under the driving force of the first power unit to realize the lifting of the material frame; when the supporting assembly is displaced to the lower limit position, it is flush with the front roller conveyor; the unloading unit is arranged on the right side of the rear roller conveyor, and it includes a unloading support frame, a unloading assembly and a second power unit; the unloading support frame is supported by the frame; the unloading assembly is arranged on the left side of the unloading support frame, and moves back and forth in the up and down direction under the driving force of the second ... The unloading assembly moves back and forth in the direction to lower the position of the material frame; when the unloading assembly moves to the lower limit position, it is flush with the rear roller conveyor; the carrying unit is arranged directly above the frame, and it includes a carrying assembly, a third power unit and a fourth power unit; the third power unit is directly fixed on the upper plane of the frame to drive the fourth power unit together with the carrying assembly to move back and forth in the front and back directions; the fourth power unit drives the carrying assembly to move in the left and right directions; when the When the transport component is displaced to the front limit position, it can be aligned with the supporting component to transfer the material frame from the supporting component to the transport component; when the transport component is displaced to the rear limit position, it can be aligned with the unloading component, and the fourth power unit is actuated to transfer the material frame from the transport component to the unloading component; the laser marking machine is arranged above the transport unit; when the material frame performs a translational movement under the driving force of the transport unit, the laser marking machine is started to realize the laser marking operation of the laser-marked parts.

2. The laser marking production line according to claim 1, characterized in that: The material supporting assembly includes a material supporting frame, a transition roller conveyor line, a left-mounted limiting unit and a right-mounted pressing unit; the material supporting frame is directly driven by the first power unit; the transition roller conveyor line is fixed on the material supporting frame; the left-mounted limiting unit and the right-mounted pressing unit are respectively fixed on the transition roller conveyor line and the material supporting frame, and are arranged opposite to each other along the left and right directions; when the material frame is parked in place relative to the transition roller conveyor line, the left-mounted limiting unit is actuated to limit the left side wall of the material frame; the right-mounted pressing unit is actuated and moves toward the left-mounted limiting unit until the right side wall of the material frame is pressed.

3. The laser marking production line according to claim 2, characterized in that: The left-positioned limiting unit includes a limiting plate and a fifth power unit; the limiting plate can freely pass through the transition roller conveyor line along the up and down directions under the driving force of the fifth power unit.

4. The laser marking production line according to claim 2, characterized in that: The right-mounted pressing unit includes a pressing plate and a sixth power unit; the pressing plate is arranged on the left side of the material support rack, and reciprocates and translates along the left and right directions under the driving force of the sixth power unit to achieve tightening / relaxation of the right side wall of the material frame.

5. The laser marking production line according to claim 1, characterized in that: The carrying assembly includes a left-mounted clamping arm, a right-mounted clamping arm and a finger cylinder; the finger cylinder is directly driven by the fourth power unit; the left-mounted clamping arm and the right-mounted clamping arm are respectively fixedly connected with the left finger and the right finger of the finger cylinder in a one-to-one correspondence; when the finger cylinder is actuated, the left-mounted clamping arm moves toward / away from the right-mounted clamping arm to achieve clamping / relaxation of the material frame.

6. The laser marking production line according to claim 5, characterized in that: The carrying assembly also includes a left-mounted guide part and a right-mounted guide part symmetrically arranged on the left and right sides of the finger cylinder; the left-mounted guide part includes a left-mounted slide rail and slider assembly and a left-mounted load-bearing member; the left-mounted load-bearing member is fixed as a whole with the left-mounted clamping arm, and performs directional sliding movement along the front-back direction under the action of the left-mounted slide rail and slider assembly; the right-mounted guide part includes a right-mounted slide rail and slider assembly and a right-mounted load-bearing member; The right-positioned load-bearing member is fixed to the right-positioned clamping arm as a whole, and performs directional sliding movement along the front-rear direction under the action of the right-positioned slide rail slider assembly.

7. The laser marking production line according to any one of claims 1 to 6, characterized in that: It also includes a defective product sorting unit; the defective product sorting unit is used in conjunction with the transport unit, and is arranged just above the frame and behind the transport unit.

8. The laser marking production line according to claim 7, characterized in that: The defective product sorting unit includes a sorting support frame, a seventh power unit, an eighth drive unit, a ninth drive unit, a mounting frame and a vacuum adsorption unit; the vacuum adsorption unit is used to adsorb defective products in the laser-marked parts, and is fixed on the mounting frame; when the seventh power unit, the eighth drive unit and the ninth drive unit are in action, they respectively drag the mounting frame together with the vacuum adsorption unit to perform displacement movements along the front-to-back direction, the left-to-right direction, and the up-and-down direction.

9. The laser marking production line according to claim 8, characterized in that: The defective product sorting unit also includes a high-speed CCD camera; the high-speed CCD camera is fixed on the mounting frame and is arranged side by side along the left-right direction relative to the vacuum adsorption part.

10. A working method of a laser marking production line, characterized in that: The following steps are involved: 1) Arrange the parts to be laser marked in order in the material frame; 2) Place the material frame as a whole on the front roller conveyor. When the front roller conveyor starts, the material frame is moved horizontally from left to right; 3) While step 2 is being executed, the supporting assembly moves downward under the driving force of the first power unit until it reaches its lower limit position, at which point the supporting assembly is flush with the front roller conveyor; 4) The front roller conveyor continues to move to transfer the material frame from the front roller conveyor to the support assembly; 5) The first power unit is started for the second time, driving the support assembly and the material frame to move upward until the upper limit position, at which point the support assembly is flush with the carrier assembly; 6) The transport component moves to transfer the material frame from the support component to the transport component; 7) When the carrier assembly drags the material frame to perform translational motion under the coordinated driving force of the third power unit and the fourth power unit, the laser marking machine is started to complete the printing and forming of the mark on the laser-marked part; 8) After the imprint is printed, the carrier assembly continues to move backward in translation under the driving force of the third power unit until it reaches its rear limit position; 9) The fourth power unit is started to drive the carrier assembly to move rightward in translation until it reaches the right limit position. At the same time, the unloading assembly moves upward under the driving force of the second power unit until it is critically supported on the bottom wall of the material frame; 10) The carrier assembly releases the grip on the material frame to transfer the material frame from the carrier assembly to the unloading assembly; 11) The second power unit is started for the second time to drag the unloading assembly and the material frame to move downward until the lower limit position. At this time, the unloading assembly is flush with the rear roller conveyor; 12) The rear roller conveyor starts to move the entire material frame out of the laser marking production line.

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