Laser marking machine

Abstract

The invention discloses a laser marking machine which comprises a cabinet body, a circular groove is formed in the center of the cabinet body, a feeding area and a discharging area are arranged in the circular groove, the feeding area and the discharging area are separated through a protruding base, a rack is arranged on the protruding base, a first station and a second station which are different in height are arranged on the rack, and the first station and the second station are each provided with a turnover mechanism. The feeding area is provided with a first laser marking device, the discharging area is provided with a second laser marking device, in the initial state, the first station and the second station are arranged in the feeding area, and a feeding mechanism of the feeding area is used for installing workpieces for the first station and the second station in sequence; the first laser marking device and the second laser marking device are started to achieve double-face laser marking on the workpieces on the two stations, the workpieces subjected to two-way laser marking are disengaged from the stations and conveyed to the next working procedure through the conveying piece in the discharging area, continuous double-face laser marking of the workpieces is achieved through the double-station double lasers, the double-face laser marking efficiency is improved, and the working efficiency is improved. The workpiece surface damage rate is reduced, and the workpiece quality is improved.

Description

Technical Field

[0001] The invention relates to a laser marking machine. Background Art

[0002] Laser marking is to use laser beam to make permanent marks on the surface of various materials. The effect of marking is to expose the deeper materials through the evaporation of the surface material, or to "carve" marks through the chemical and physical changes of the surface material caused by light energy, or to burn part of the material through light energy to reveal the pattern and text to be etched. There are many products that need to be laser marked on both sides, such as Figure 1 As shown in the figure, it is a structural diagram of multiple metal plates stacked in sequence. In the actual production and processing process, both surfaces of each metal plate need to be laser marked. The traditional practice is to first perform laser marking on one surface of the metal plate, then flip the metal plate over and perform laser marking on the other surface. This practice will obviously reduce the efficiency of laser marking on the metal plate. Furthermore, turning the metal plate over and over will increase the damage rate of the metal plate and affect the quality of production. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a laser marking machine, which can realize continuous double-sided laser marking of workpieces through the setting of dual-station dual lasers, thereby improving the efficiency of double-sided laser marking of workpieces, and at the same time reducing the surface damage rate of workpieces caused by stacked workpieces, thereby improving the quality of workpieces.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a laser marking machine, including a cabinet, a circular groove is provided in the center of the cabinet, a feeding area and a discharging area are provided in the circular groove, the feeding area and the discharging area are separated by a raised base, a frame is provided on the raised base, a first station and a second station with a height difference are provided on the frame, the first station and the second station are both equipped with a flipping mechanism, the feeding area is provided with a first laser marker, and the discharging area is provided with a second laser marker. In the initial state, the first station and the second station are both arranged in the feeding area and the feeding mechanism of the feeding area installs the workpiece for the first station and the second station respectively, the first laser marker and the second laser marker are started to realize double-sided laser marking on the workpieces of the two stations, and the workpiece after double-sided laser marking is detached from the station and transported to the next process through the conveying member of the discharging area.

[0005] Furthermore, the first laser marker is used for laser marking the first surface of the workpiece at the first station and the second station that have not been flipped, and the second laser marker is used for laser marking the second surface of the workpiece at the first station and the second station after flipping. The first laser marker and the second laser marker are both installed on a vertical adjustment component, and a linkage is provided on the vertical adjustment component, and the linkage is used to realize the height difference transformation between the first laser marker and the second laser marker.

[0006] Furthermore, the vertical adjustment component includes a first Y-shaped bracket, a second Y-shaped bracket and a fixed plate connecting the two brackets in an obliquely symmetrical manner, the first Y-shaped bracket is provided with an arc-shaped through groove, the bottom of the Y-shaped bracket is provided with a high and low surface and the high and low surface is provided with a first slide rail, the inner side surface of the Y-shaped bracket is provided with a second slide rail with the same motion trajectory as the first slide rail, a second laser marker is installed on the first slide rail, and the first laser marker is installed between the second slide rails, and the spacing between the high and low surfaces is the height difference between the first workstation and the second workstation.

[0007] Furthermore, the linkage member includes a first telescopic rotating end and a second telescopic rotating end, the first telescopic rotating end passes through the arcuate through slot and is connected to the second laser marker, the second telescopic rotating end passes through the fixed plate and is connected to the first laser marker, the first telescopic rotating end includes an arcuate tooth pattern segment, the second telescopic rotating end includes a driven gear, a driving gear is meshed between the arcuate tooth pattern segment and the driven gear, the driving gear is configured with a drive, the arcuate tooth pattern segment rotates in the same direction as the driving gear, and rotates in the opposite direction to the driven gear.

[0008] Furthermore, the first telescopic rotating end and the second telescopic rotating end both include a fixed sleeve connected to the laser marker, a vertical slide rod is provided in the fixed sleeve, and the vertical slide rod is connected to the arc-shaped tooth pattern segment and the driven gear.

[0009] Furthermore, the flipping mechanism of the first station is used to achieve a 180° left-right flip of the first station, and the flipping mechanism of the second station is used to achieve a 180° front-back flip of the second station. The flipping mechanisms are all flipping motors, and the flipping motors are all equipped with a controller. The controller is turned on and off by the first visual detection component. The first visual detection component is used to detect whether the first-side laser marking of the workpiece is completed. When the first station completes the first-side laser marking, the flipping mechanism on the first station flips 180°. When the second laser marker starts to perform laser marking on the second side, the workpiece on the second station is synchronously laser marked on the first side.

[0010] Furthermore, the first station and the second station are provided with empty grooves, at least two side walls of the empty grooves are transversely provided with transverse grooves, and the transverse grooves are provided with limit members, and the limit members include a first abutment portion and a second abutment portion, and the distance between the first abutment portion and the second abutment portion is the thickness of the workpiece, the first abutment portion is a plurality of telescopic rods, the ends of the telescopic rods are rubber blocks with inclined surfaces, and the outer periphery of the telescopic rods is covered with springs, and the second abutment portions are a plurality of hydraulic rods, and the plurality of hydraulic rods are jointly provided with a contact switch.

[0011] Furthermore, buffer pads are provided at the positions of the first and second workstations after flipping, and retractable contacts are provided on the buffer pads corresponding to the contact switches. The retractable contacts are controlled by the second visual inspection component or the third visual inspection component. The second visual inspection component and the third visual inspection component are used to detect whether the second-side laser marking of the workpiece has been completed.

[0012] Furthermore, the feeding area includes a supporting position, a waiting position and a workpiece feeding and conveying section, the feeding mechanism includes a lifting part of the supporting position and a lateral pushing part of the waiting position, the lifting part is used to install the workpiece at the supporting position to the first workstation or the second workstation, the lateral pushing part is used to move the workpiece on the waiting position to the supporting position, and the workpiece feeding and conveying section conveys the workpiece to the waiting position.

[0013] Furthermore, the first laser marker and the second laser marker are equipped with accessories, and the accessories include a blowing piece, and the blowing piece is used to blow away the debris on the workpiece. Beneficial Effects

[0014] 1. In the prior art, workpieces are usually stacked, and after the first side of the workpieces is marked uniformly, the stacked workpieces are flipped over to mark the second side. The flipping process is prone to cause wear between the workpieces, reducing the quality of the workpieces, and the marking efficiency is low. The present application adopts a dual-station dual laser to achieve continuous double-sided laser marking of the workpiece, thereby solving the problem of workpiece surface wear and improving the laser marking efficiency.

[0015] 2. In this application, due to the height difference between the first workstation and the second workstation, the distance that the laser reaches at different workstations is different. In this application, the height difference between the two lasers is changed by setting the first slide rail, the second slide rail and the linkage parts, so as to complete the laser marking of the same thickness on the workpieces at different horizontal positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a laser marking machine; Figure 2 This is a schematic diagram of the laser marking machine from another perspective; Figure 3 for Figure 1 Top view; Figure 4This is a schematic diagram of a laser marker; Figure 5 It is a schematic diagram of a vertical adjustment member; Figure 6 It is a schematic diagram of a Y-shaped bracket; Figure 7 It is the side view of the laser marker; Figure 8 It is a schematic diagram of the rack and workstation; Fig. 9 It is a schematic diagram of the limiter and the lifting part; Fig.10 It is a schematic diagram of the lateral push part; Fig.11 for Fig.10 Schematic top view of .

[0017] Figure numerals: 1, cabinet; 2, circular groove; 3, feeding area; 31, top support position; 32, waiting position; 33, workpiece feeding and conveying section; 4, discharging area; 5, raised base; 6, frame; 61, first visual inspection member; 7, first station; 8, second station; 9, flip mechanism; 91, flip motor; 10, first laser marker; 11, second laser marker; 12, vertical adjustment assembly; 121, first Y-shaped bracket; 122, second Y-shaped bracket; 123, fixed plate; 124, arc-shaped through groove; 125, first slide rail; 1 26. Second slide rail; 13. Linkage member; 131. First telescopic rotating end; 132. Arc-shaped tooth pattern segment; 133. Second telescopic rotating end; 134. Driven gear; 135. Driving gear; 136. Fixed sleeve; 137. Vertical slide bar; 14. Limiting member; 141. First abutting portion; 142. Second abutting portion; 15. Contact switch; 16. Buffer pad; 161. Telescopic contact; 17. Second visual detection member; 18. Third visual detection member; 19. Feeding mechanism; 191. Lifting portion; 192. Lateral pushing portion. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0019] Refer to Figure 1-Figure 11As shown, the present invention provides a laser marking machine, including a cabinet 1, a circular groove 2 is provided at the center of the cabinet 1, a feeding area 3 and a discharging area 4 are provided in the circular groove 2, the feeding area 3 and the discharging area 4 are separated by a raised base 5, a frame 6 is provided on the raised base 5, a first station 7 and a second station 8 with a height difference are provided on the frame 6, thereby ensuring that the first station 7 and the second station 8 can be set in the feeding area 3 in an initial state and the workpieces are installed for the first station 7 and the second station 8 through a feeding mechanism 19 in the feeding area 3, the first station 7 and the second station 8 are both provided with a flipping mechanism 9, the flipping mechanism 9 of the first station 7 is used to realize a 180° left-right flipping of the first station 7, the flipping mechanism 9 of the second station 8 is used to realize a 180° front-back flipping of the second station 8, the flipping mechanisms 9 are all flipping motors 91, the flipping motors 91 are all provided with a controller, the controller is turned on and off by a first visual detection component 61, and the first visual detection component 61 is used to detect whether the first surface laser marking of the workpiece is completed. The feeding area 3 is provided with a first laser marker 10, and the discharging area 4 is provided with a second laser marker 11. The first laser marker 10 is used for laser marking the first side of the workpieces on the first station 7 and the second station 8 that have not been flipped over. The second laser marker 11 is used for laser printing the second side of the workpieces on the first station 7 and the second station 8 that have been flipped over. After the workpiece is laser marked on both sides, it is detached from the station and transported to the next process through the conveying member of the discharging area 4. The conveying member is a ring-shaped conveying roller that belongs to the prior art and will not be elaborated here.

[0020] like Figure 1 , Figure 8-Figure 11As shown, in the initial state, the first station 7 and the second station 8 are arranged in the feeding area 3. The feeding mechanism 19 of the feeding area 3 first installs the workpiece for the first station 7. After the workpiece of the first station 7 is installed, the first laser marker 10 detects the workpiece and starts to perform laser marking on the first surface. After the first visual inspection part 61 detects that the laser marking on the first surface is completed, the flipping mechanism 9 of the first station 7 is triggered to start to achieve a 180° flip in the left and right directions to prepare for the second laser marker 11 to perform laser marking on the second surface. At this time, the feeding mechanism 19 starts to install the workpiece for the second station 8 to prepare for the first laser marker 10 to perform laser marking on the first surface. The feeding area 3 specifically includes a top support position 31, a waiting position 32 and a workpiece feeding and conveying section 33. The workpiece feeding and conveying section 33 is a conveyor belt, and the conveyor belt is controlled by a servo motor. The feeding mechanism 19 includes a lifting part 191 arranged at the supporting position 31 and a lateral pushing part 192 arranged at the waiting position 32. The lifting part 191 includes a hydraulic rod driven by hydraulic pressure. A top plate is arranged at the upper end of the hydraulic rod. The top plate is in the shape of a quadrangular platform. A workpiece is placed on the top plate. The workpiece is moved upward by starting the hydraulic rod. The first station 7 and the second station 8 are both provided with distance sensors for controlling the lifting height of the hydraulic rod to achieve the installation of the workpieces at the first station 7 and the second station 8. The lateral pushing part 192 is a hydraulically driven or motor-driven screw (motor-driven in this figure). The screw is connected to a push plate through a telescopic block. The push plate is slidably connected to a guide block. Through the rotation of the screw, the push plate is moved along the guide block to move the workpiece at the waiting position 32 to the supporting position 31. The workpiece feeding and conveying section 33 conveys the next workpiece to the waiting position 32.

[0021] like Figure 8As shown, the first station 7 and the second station 8 are provided with an empty slot, and at least two side walls of the empty slot are transversely provided with transverse slots, and each transverse slot is provided with a stopper 14, and the stopper 14 includes a first abutting portion 141 and a second abutting portion 142, and the spacing between the first abutting portion 141 and the second abutting portion 142 is the thickness of the workpiece, and the first abutting portion 141 is a plurality of telescopic rods, and the ends of the telescopic rods are rubber blocks arranged on an inclined surface, and the outer periphery of the telescopic rods is covered with a spring, and when the lifting portion 191 pushes the workpiece upward, the initial workpiece will push the rubber block and the telescopic rod to retract, so that the workpiece moves to the top of the first abutting portion 141, and the rubber block and the telescopic rod are reset so that the lower end surface of the workpiece is placed above the first abutting portion 141 and below the first abutting portion 141. The second abutting portion 142 is a plurality of hydraulic rods, and the plurality of hydraulic rods are jointly provided with a contact switch 15, and the extension and contraction of the plurality of hydraulic rods is controlled by the contact switch 15, and the contact switch 15 is triggered after the laser marking of the second surface of the workpiece is completed, so that the workpiece leaves the station and leaves through the discharge area 4. The present application provides a buffer pad 16 at the positions of the first station 7 and the second station 8 after flipping, and a telescopic contact 161 is provided on the buffer pad 16 corresponding to the contact switch 15. The telescopic contact 161 is a telescopic click rod, and the telescopic contact 161 is controlled by the second visual detection component 17 or the third visual detection component 18. The second visual detection component 17 is used to detect the laser marking condition of the second surface of the second station 8, and the third visual detection component 18 is used to detect the laser marking condition of the second surface of the first station 7, thereby triggering the corresponding hydraulic rod of the first station 7 or the second station 8 to start, and the workpiece is transported away to the laser marking machine through the conveying component of the discharge area 4. The first visual detection component 61, the second visual detection component 17, and the third visual detection component 18 are prior art and will not be elaborated here. The present application preferably installs the first visual detection component 61 on the frame 6, and the second visual detection component 17 and the third detection component are installed on the vertical adjustment component.

[0022] like Figure 1-Figure 7As shown, the first laser marker 10 and the second laser marker 11 are both installed on the vertical adjustment member, and the specific vertical adjustment member includes an obliquely symmetrical first Y-shaped bracket 121, a second Y-shaped bracket 122 and a fixing plate 123 connecting the two brackets. The first Y-shaped bracket 121 and the second Y-shaped bracket 122 are arranged to be height-adjustable for later adjustment. The first Y-shaped bracket 121 is provided with an arc-shaped through groove 124, and the bottom of the Y-shaped bracket is provided with a high and low surface, and the distance between the high and low surfaces is the height difference between the first station 7 and the second station 8. The high and low surfaces are provided with a first slide rail 125, and the inner side surface of the Y-shaped bracket is provided with a second slide rail 126 with the same motion trajectory as the first slide rail 125. The first slide rail 125 is installed with a second laser marker 11, and the first laser marker 10 is installed between the second slide rails 126. The second laser marker 11 moves along the first slide rail 125 to realize the switching of the two marking points between the first station 7 and the second station 8 after the flipping, and in the switching process, the second laser marker 11 is ensured to have the same spacing with the first station 7 and the second station 8 after the flipping. The first laser marker 10 moves along the second slide rail 126 to realize the change of the vertical position of the first laser marker 10 itself, so as to keep the same spacing with the first station 7 and the second station 8, thereby ensuring the same marking effect.

[0023] The linkage member 13 is arranged on the vertical adjustment assembly 12, and is used to realize the height difference transformation between the first laser marker 10 and the second laser marker 11, thereby realizing the first laser marker 10, and ensuring the uniform marking of the first laser marker 10 and the second laser marker 11. The linkage member 13 includes a first telescopic rotating end 131 and a second telescopic rotating end 133. The first telescopic rotating end 131 penetrates the arc-shaped through groove 124 and is connected to the second laser marker 11, and the second telescopic rotating end 133 penetrates the fixed plate 123 and is connected to the first laser marker 10. The first telescopic rotating end 131 includes an arc-shaped tooth pattern segment 132, and the second telescopic rotating end 133 includes a driven gear 134. A driving gear 135 is meshed between the arc-shaped tooth pattern segment 132 and the driven gear 134. The driving gear 135 is configured with a drive, and the arc-shaped tooth pattern segment 132 rotates in the same direction as the driving gear 135 and rotates in the opposite direction to the driven gear 134. When the second laser marker 11 is in a high position, the first laser marker 10 is in a low position, and when the driving gear 135 rotates clockwise, the high and low position conversion of the second laser marker 11 and the first laser marker 10 is realized.

[0024] The first telescopic rotating end 131 and the second telescopic rotating end 133 also include a fixed sleeve 136 connected to the laser marker, and a vertical slide rod 137 is provided in the fixed sleeve 136. The vertical slide rod 137 is connected to the arc-shaped toothed end and the driven gear 134. The fixed sleeve 136 and the vertical slide rod 137 are telescopically connected to adapt to the sliding transformation of the first laser marker 10 and the second laser marker 11 on the corresponding first slide rail 125 and the second slide rail 126.

[0025] The second laser marker 11 starts to perform laser marking on the second surface of the flipped first station 7, and the first laser marker 10 performs laser marking on the first surface of the unflipped second station 8 synchronously. After the workpiece of the first station 7 is detected by the third visual detection component 18 and the second surface laser marking is completed, the telescopic contact 161 is started to realize the contraction of the hydraulic rod, and the workpiece falls onto the conveying member of the discharge area 4. At this time, the first visual detection component 61 detects that the workpiece on the second station 8 completes the first surface laser marking, and triggers the flipping mechanism 9 of the second station 8 to realize 180° flipping back and forth to form a flipped workpiece. The first station 7 after flipping returns to the unturned first station 7 through the flipping mechanism 9, and the feeding mechanism 19 re-places the workpiece for the first station 7. At this time, the linkage 13 starts to move the second laser marker 11 from the flipped first station 7 to the top of the flipped second station 8 through the first slide rail 125, and the first laser marker 10 moves from the low position to the high position through the second slide rail 126, so as to improve the first laser marker 10 in the vertical direction, so that the first laser marker 10 and the second laser marker 11 have the same focal length for the workpiece.

[0026] Furthermore, the first laser marker 10 and the second laser marker 11 are both equipped with accessories, including a blowing piece, which is used to blow away debris on the workpiece to avoid affecting the molding quality of the laser marking. (The blowing piece is a prior art and will not be described in detail here). The accessories may also include a cleaning piece for cleaning the laser marker.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A laser marking machine, comprising a cabinet (1), characterized in that: A circular groove (2) is provided at the center of the cabinet (1), and a feeding area (3) and a discharging area (4) are provided in the circular groove (2), and the feeding area (3) and the discharging area (4) are separated by a raised base (5), and a frame (6) is provided on the raised base (5), and a first workstation (7) and a second workstation (8) with a height difference are provided on the frame (6), and the first workstation (7) and the second workstation (8) are both equipped with a turning mechanism (9), and the feeding area (3) is provided with a first laser marker (10), and the The discharge area (4) is provided with a second laser marker (11). In an initial state, the first station (7) and the second station (8) are both arranged in the feed area (3), and the feed mechanism (19) of the feed area (3) sequentially installs workpieces in the first station (7) and the second station (8). The first laser marker (10) and the second laser marker (11) are started to realize double-sided laser marking on the workpieces of the two stations. After the double-sided laser marking, the workpiece is detached from the station and transported to the next process through the conveying member of the discharge area (4).

2. The laser marking machine according to claim 1, characterized in that: The first laser marker (10) is used for laser marking the first surface of the workpiece at the first station (7) and the second station (8) which have not been flipped, and the second laser marker (11) is used for laser marking the second surface of the workpiece at the first station (7) and the second station (8) which have been flipped. The first laser marker (10) and the second laser marker (11) are both mounted on a vertical adjustment component (12). The vertical adjustment component (12) is provided with a linkage component (13). The linkage component (13) is used to achieve height difference transformation between the first laser marker (10) and the second laser marker (11).

3. The laser marking machine according to claim 2, characterized in that: The vertical adjustment assembly (12) comprises a first Y-shaped bracket (121) and a second Y-shaped bracket (122) which are obliquely symmetrical, and a fixing plate (123) connecting the two brackets; the first Y-shaped bracket (121) is provided with an arc-shaped through groove (124); the bottom of the Y-shaped bracket is provided with a high-low surface and the high-low surface is provided with a first slide rail (125); the inner side surface of the Y-shaped bracket is provided with a second slide rail (126) having the same motion trajectory as the first slide rail (125); the first slide rail (125) is provided with a second laser marker (11); the second slide rail (126) is provided between the first laser marker (10); and the spacing between the high-low surfaces is the height difference between the first station (7) and the second station (8).

4. The laser marking machine according to claim 3, characterized in that: The linkage member (13) comprises a first telescopic rotating end (131) and a second telescopic rotating end (133). The first telescopic rotating end (131) passes through the arc-shaped through slot (124) and is connected to the second laser marker (11). The second telescopic rotating end (133) passes through the fixed plate (123) and is connected to the first laser marker (10). The first telescopic rotating end (131) comprises an arc-shaped tooth pattern segment (132). The second telescopic rotating end (133) comprises a driven gear (134). A driving gear (135) is meshed between the arc-shaped tooth pattern segment (132) and the driven gear (134). The driving gear (135) is provided with a drive. The arc-shaped tooth pattern segment (132) rotates in the same direction as the driving gear (135) and rotates in the opposite direction to the driven gear (134).

5. The laser marking machine according to claim 4, characterized in that: The first telescopic rotating end (131) and the second telescopic rotating end (133) both further include a fixed sleeve (136) connected to the laser marker, a vertical slide bar (137) is provided inside the fixed sleeve (136), and the vertical slide bar (137) is connected to the arc-shaped tooth pattern segment (132) and the driven gear (134).

6. The laser marking machine according to claim 5, characterized in that: The flipping mechanism (9) of the first station (7) is used to flip the first station (7) 180 degrees to the left and right, and the flipping mechanism (9) of the second station (8) is used to flip the second station (8) 180 degrees to the front and back. The flipping mechanisms (9) are flipping motors (91). The flipping motors (91) are all equipped with a controller. The controller is turned on and off by a first visual detection component (61). The first visual detection component (61) is used to detect whether the first surface laser marking of the workpiece is completed. When the first station (7) completes the first surface laser marking, the flipping mechanism (9) on the first station (7) flips 180 degrees, and when the second laser marker (11) is started to perform the second surface laser marking, the workpiece on the second station (8) is synchronously laser marked on the first surface.

7. The laser marking machine according to claim 6, characterized in that: The first station (7) and the second station (8) are provided with empty slots, at least two side walls of the empty slots are transversely provided with transverse slots, each of the transverse slots is provided with a limiter (14), the limiter (14) comprises a first abutting portion (141) and a second abutting portion (142), the spacing between the first abutting portion (141) and the second abutting portion (142) is the thickness of the workpiece, the first abutting portion (141) is a plurality of telescopic rods, the ends of the telescopic rods are rubber blocks with inclined surfaces, the outer periphery of the telescopic rods is covered with a spring, the second abutting portion (142) is a plurality of hydraulic rods, and the plurality of hydraulic rods are jointly provided with a contact switch (15).

8. The laser marking machine according to claim 7, characterized in that: A buffer pad (16) is provided at the positions of the flipped first workstation (7) and the second workstation (8), and a telescopic contact (161) is provided on the buffer pad (16) corresponding to the contact switch (15). The telescopic contact (161) is controlled to be telescopic by a second visual detection component (17) or a third visual detection component (18). The second visual detection component (17) and the third visual detection component (18) are used to detect whether the second surface laser marking of the workpiece is completed.

9. The laser marking machine according to claim 8, characterized in that: The feeding area (3) comprises a supporting position (31), a waiting position (32) and a workpiece feeding and conveying section (33); the feeding mechanism (19) comprises a lifting portion (191) of the supporting position (31) and a lateral pushing portion (192) of the waiting position (32); the lifting portion (191) is used to install the workpiece at the supporting position (31) onto the first workstation (7) or the second workstation (8); the lateral pushing portion (192) is used to move the workpiece at the waiting position (32) to the supporting position (31); and the workpiece feeding and conveying section (33) conveys the workpiece to the waiting position (32).

10. The laser marking machine according to claim 9, characterized in that: The first laser marker (10) and the second laser marker (11) are both equipped with accessories, which include a blowing piece, and the blowing piece is used to blow away debris on the workpiece.

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