Laser marking machine

Abstract

The invention relates to a laser marking machine which comprises a first driving mechanism, the first driving mechanism is used for driving a positioning camera, a code reader, a laser marking device, a screw machine and an adsorption mechanism to do reciprocating motion in a plane and is used for driving the screw machine and the adsorption mechanism to do lifting motion, and a conveying mechanism can be used for driving a carrier to convey a workpiece into the machine. The positioning camera moves to determine the coordinate position of a workpiece, the screw machine moves to remove screws, the adsorption mechanism moves and carries an upper cover of the workpiece, the laser marking device carries out laser marking according to feedback operation of the positioning camera and the code reader, then the upper cover is moved back, the screws are locked, and the conveyed workpiece exits. The whole machine integrates the functions of automatic positioning, automatic screw dismounting and locking, automatic upper cover carrying, automatic code reading and automatic marking, code reading and printing errors caused by human factors can be effectively avoided, the marking requirements of multi-code matching such as three-code-in-one marking are met, and the yield and the production efficiency are remarkably improved.

Description

Technical Field

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

[0002] Laser marking machines are devices that use laser beams to mark the surface of materials. They have the advantages of high precision, high speed, wide application of materials, difficult to change images and texts, no force on the surface of the workpiece, no mechanical deformation or corrosion, etc. They are widely used in the fields of electronic components, integrated circuits, electrical appliances, mobile communications, etc. Existing laser marking machines generally include a movable laser marking mechanism set on a machine tool. The laser marking mechanism includes a laser and an industrial camera. With the auxiliary positioning of the industrial camera, the laser moves and marks the product on the machine tool. Its main defects are:

[0003] For example, in the electronic component packaging industry, when coding the component housing, it is necessary to ensure that the identification codes of the component housing, the PCB board inside the component, and the matching parts match or the three codes are combined into one. However, since the PCB board has been packaged inside the assembled component housing during processing, if the identification code is generated and printed on the component housing only based on reading the matching part identification code during packaging marking, it is more dependent on the corresponding loading of the component and the matching parts. As the processing volume or the complexity of the identification code increases, manual identification loading or code reading is prone to errors. Due to non-corresponding loading or code reading errors, the identification code of the component housing and its internal PCB board may be inconsistent, and the identification code matching or three-code combination requirements cannot be met. The secondary scanning, disassembly and quality inspection not only has a large workload, but also cannot be reworked, which will result in a large defect rate loss, affecting production efficiency and cost.

[0004] Secondly, for workpieces of different shapes and sizes, simply placing the workpiece on the machine tool may make it difficult for the workpiece to enter the corresponding processing area, affecting the positioning of the workpiece marking, or affecting the marking accuracy due to the displacement of the workpiece during laser processing, thereby affecting the processing efficiency, product quality or processing scope. Summary of the invention

[0005] The present invention aims to solve at least one of the above-mentioned technical problems to a certain extent. The present invention provides a laser marking machine, which can avoid manual errors in code reading and coding, meet the marking processing requirements of multi-code matching through automatic operation, and effectively improve processing efficiency and yield rate.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A laser marking machine comprises a first driving mechanism, a positioning camera, a code reader, a laser coding device, a screw machine and an adsorption mechanism, wherein the first driving mechanism is used to drive the positioning camera, the code reader, the laser coding device, the screw machine and the adsorption mechanism to reciprocate in a plane and to drive the screw machine and the adsorption mechanism to move up and down respectively, and the laser coding device is used to operate according to feedback from the positioning camera and the code reader.

[0008] In a preferred embodiment, the first driving mechanism includes a Y-axis module, an X-axis module, a first lifting driving mechanism, and a second lifting driving mechanism. The Y-axis module is used to drive the X-axis module to move forward and backward. The X-axis module is used to drive the positioning camera, the code reader, the laser coding device, the first lifting driving mechanism, and the second lifting driving mechanism to move left and right. The first lifting driving mechanism is used to drive the screw machine to move up and down, and the second lifting driving mechanism is used to drive the adsorption mechanism to move up and down.

[0009] In a preferred embodiment, the Y-axis module includes a first motor, a substrate, at least one group of first screw rods, a first screw rod nut and a first slide rail, the first motor is used to drive the first screw rod to rotate, the first screw rod and the first slide rail are longitudinally arranged, the first screw rod nut cooperates with the first screw rod, the substrate is connected to the first screw rod nut, the substrate cooperates with the first slide rail, and the X-axis module is arranged on the substrate.

[0010] In a preferred embodiment, the Y-axis module includes two first slide rails respectively located on two sides of the base plate.

[0011] In a preferred embodiment, the X-axis module includes a second motor, a second screw rod, a second screw rod nut and a second slide rail, the second motor is connected to the second screw rod, the second screw rod and the second slide rail are arranged horizontally, the second screw rod nut cooperates with the second screw rod, the positioning camera, the code reader, the laser coding device, the first lifting drive mechanism and the second lifting drive mechanism are all connected to the second screw rod nut, and can all slide with the second slide rail.

[0012] In a preferred embodiment, a clearance opening is provided on the substrate, and the positioning camera and the laser coding device can be placed in the clearance opening for movement.

[0013] In a preferred embodiment, the first lifting drive mechanism includes a first support frame and a first cylinder disposed on the first support frame, and a cylinder rod of the first cylinder is connected to a screw machine.

[0014] In a preferred embodiment, the first lifting drive mechanism comprises a second support frame, the second support frame is slidably matched with the first support frame along the vertical direction, and the screw machine is installed on the second support frame.

[0015] In a preferred embodiment, the first lifting drive mechanism includes a height sensor located below the second support frame.

[0016] In a preferred embodiment, the second lifting drive mechanism includes a third support frame and a second cylinder disposed on the third support frame, and a cylinder rod of the second cylinder is connected to the adsorption mechanism.

[0017] In a preferred embodiment, the adsorption mechanism comprises a suction cup.

[0018] In a preferred embodiment, it includes several positioning members located below the laser coding device, the screw machine and the adsorption mechanism.

[0019] In a preferred embodiment, a transport mechanism and a carrier are included, wherein the transport mechanism is used to drive the carrier to move back and forth under the positioning camera, the code reader, the laser coding device, the screw machine and the adsorption mechanism.

[0020] In a preferred embodiment, the positioning member is disposed on a carrier.

[0021] In a preferred embodiment, the transport mechanism includes an in-position sensor and a limit mechanism arranged corresponding to the carrier, and the limit mechanism includes a first limit member that is lifted and lowered in front of the carrier.

[0022] In a preferred embodiment, the limiting mechanism comprises a third cylinder, and the third cylinder is used to drive the second limiting member to rise and fall.

[0023] In a preferred embodiment, the transport mechanism includes at least two longitudinally arranged conveying tracks, and the conveying tracks include a track frame, a second driving mechanism, a conveyor belt, a third lifting driving mechanism and a support member. The second driving mechanism is used to drive the conveyor belt to rotate around the track frame, and the third lifting driving mechanism is used to drive the support member to move up and down relative to the conveyor belt. The track frames of the conveying tracks on both sides of the conveying mechanism are provided with second limit members located above the conveyor belt.

[0024] In a preferred embodiment, the third lifting drive mechanism includes a fourth cylinder, and the fourth cylinder is used to drive the support member to move up and down.

[0025] In a preferred embodiment, the transport mechanism comprises a third driving mechanism and at least two parallel conveying tracks, and the third driving mechanism is used to drive at least one conveying track to move back and forth left and right.

[0026] In a preferred embodiment, the third driving mechanism includes a third motor, at least one group of third screw rods, a third screw rod nut and a third slide rail. The third motor is used to drive the third screw rod to rotate. The third screw rod and the third slide rail are arranged horizontally. The third screw rod nut cooperates with the third screw rod. The conveying rail is connected to the third screw rod nut, and the conveying rail and the third slide rail are slidably cooperated.

[0027] In a preferred embodiment, the third driving mechanism includes at least two sets of third screw rods, third screw rod nuts and third slide rails, and the third motor and the third screw rod are coaxially connected to a transmission wheel respectively, and a transmission belt is provided outside the transmission wheel.

[0028] Compared with the prior art, the beneficial effects of the present invention are at least:

[0029] (1) The laser marking machine uses a first driving mechanism to drive the positioning camera, the barcode reader, the laser coding device, the screw machine and the adsorption mechanism to reciprocate in the plane, and to drive the screw machine and the adsorption mechanism to move up and down. The positioning camera can be moved to determine the coordinate position of the first workpiece to realize automatic positioning. The screw machine can be moved to automatically remove and lock the screws on the first workpiece. After the screws are removed, the adsorption mechanism can be moved to automatically move the upper cover on the first workpiece, so that the interior of the first workpiece, such as a PCB board, is exposed. The barcode reader moves and reads the identification code of the interior of the first workpiece, such as a PCB board, and the identification code of the second workpiece, and compares and feeds back to the laser coding device. The laser coding device moves and marks on the upper cover. After marking, the upper cover is moved and the screws are locked. The whole machine integrates the functions of automatic positioning, automatic removal and locking of screws, automatic upper cover transportation, automatic code reading, and automatic marking, which can avoid code reading and coding errors caused by human factors, and meet the marking requirements of multiple code matching such as three codes in one, so as to save the secondary disassembly and inspection process, effectively improve the yield rate, and reduce production costs.

[0030] (2) The laser marking machine uses a transport mechanism to drive the carrier to move back and forth under the positioning camera, barcode reader, laser coding device, screw machine and adsorption mechanism. The carrier can transport the workpiece into or out of the machine, and cooperate with the positioning camera, barcode reader, laser coding device, screw machine and adsorption mechanism to further improve the processing efficiency, product quality or processing application scope. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is a front perspective view of embodiment 1 of the present invention;

[0033] Figure 2 is a rear perspective view of embodiment 1 of the present invention;

[0034] Figure 3 It is a left perspective view of the screw machine and the adsorption mechanism of Embodiment 1 of the present invention;

[0035] Figure 4 It is a right-side stereoscopic diagram of a screw machine and an adsorption mechanism according to Embodiment 1 of the present invention;

[0036] Figure 5is a front perspective view of embodiment 2 of the present invention;

[0037] Figure 6 is a rear perspective view of embodiment 2 of the present invention;

[0038] Figure 7 is a top view of the structure of Embodiment 2 of the present invention;

[0039] Figure 8 is a left top perspective view of a transport mechanism according to Embodiment 2 of the present invention;

[0040] Fig. 9 It is a right bottom perspective view of the transport mechanism of embodiment 2 of the present invention.

[0041] Markings in the figure: first drive mechanism 1, Y-axis module 11, first motor 111, base plate 112, first screw rod 113, first screw rod nut 114, first slide rail 115, and clearance opening 116; X-axis module 12, second motor 121, second screw rod 122, second screw rod nut 123, and second slide rail 124; first lifting drive mechanism 13, first support frame 131, first cylinder 132, second support frame 133, fourth slide rail 134, limit plate 135, and height sensor 136; second lifting drive mechanism 14, third support frame 141, and second cylinder 142;

[0042] Positioning camera 2, code reader 3, laser coding device 4, screw machine 5, screwdriver 501, adsorption mechanism 6, suction cup 601; machine tool 7, first workpiece 8, upper cover 801, PCB board 802;

[0043] Transport mechanism 9, in-position sensor 91, limit mechanism 92, first limit piece 921, third cylinder 922; transport track 93, track frame 931, second drive mechanism 932, fourth motor 9321, driving wheel 9322, driven wheel 9323; conveyor belt 933, third lifting drive mechanism 934, fourth cylinder 9341, support member 935, second limit piece 936; third drive mechanism 94, third motor 941, third screw rod 942, third screw rod nut 943, third slide rail 944, transmission wheel 945, transmission belt 946;

[0044] Positioning member 10 , positioning column 101 , boss 102 , carrier 15 , second workpiece 16 , cable protection chain 17 . DETAILED DESCRIPTION

[0045] 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. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "vertical", "horizontal", "left", "right" and the like indicate positions or positional relationships based on the positions 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, 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, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0047] 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Embodiment 1:

[0049] In view of the current laser marking machine, the PCB board 802 is already encapsulated inside the assembled component housing during processing. The identification code is generated by reading the matching part identification code and printed on the component housing. It is easy to cause frequent errors and omissions due to manual code reading and coding, and it cannot meet the marking processing requirements of automatic operation and multi-code matching, resulting in poor processing efficiency. Figures 1-2 As shown, a preferred embodiment of the laser marking machine of the present invention is shown, wherein the laser marking machine comprises a first driving mechanism 1, a positioning camera 2, a code reader 3, a laser marking device 4, a screw machine 5 and an adsorption mechanism 6. The first driving mechanism 1 is used to drive the positioning camera 2, the code reader 3, the laser marking device 4, the screw machine 5 and the adsorption mechanism 6 to reciprocate in a plane, and to drive the screw machine 5 and the adsorption mechanism 6 to move up and down respectively. The laser marking device 4 is used to operate according to the feedback of the positioning camera 2 and the code reader 3.

[0050] like Figure 1As shown, the laser marking machine is installed on the machine tool 7, and the first driving mechanism 1, the positioning camera 2, the code reader 3, the laser coding device 4, the screw machine 5 and the adsorption mechanism 6 are coordinated and operated by the MES system. Taking the upper cover 801 of the first workpiece 8 being connected to the outer shell of the first workpiece 8 by screws during processing, the PCB board 802 is encapsulated inside the first workpiece 8, and it is intended to mark the upper cover 801 of the first workpiece 8, and make the upper cover 801, the PCB board 802 in the first workpiece 8, and the two-dimensional code identification on the second workpiece 16 consistent, and the three codes are integrated as an example, the working principle of the above laser marking machine may include:

[0051] The first workpiece 8 and the second workpiece 16 are placed on the machine tool 7 respectively, and the MES system controls the first driving mechanism 1, and the first driving mechanism 1 drives the positioning camera 2 to move in the plane close to the first workpiece 8. After the positioning camera 2 determines the coordinate position of the first workpiece 8, the first driving mechanism 1 drives the screw machine 5 to move in the plane to above the screw of the first workpiece 8, and drives the screw machine 5 to descend until the screwdriver 501 of the screw machine 5 contacts the screw. Compared with manual support of the first workpiece 8, the positioning member 10 preferably cooperates with the first workpiece 8 to limit the rotation of the first workpiece 8, and the screw of the locking machine After the knife 501 rotates to loosen the screw, the upper cover 801 can be separated from the outer shell of the first workpiece 8. The first driving mechanism 1 drives the adsorption mechanism 6 to move above the upper cover 801 in the plane. After driving the adsorption mechanism 6 to descend to contact the upper cover 801, the adsorption mechanism 6 adsorbs the upper cover 801. Driving the adsorption mechanism 6 to rise can make the upper cover 801 carrying the screw and separated from the outer shell of the first workpiece 8. The first driving mechanism 1 drives the adsorption mechanism 6 to move in the plane. After the upper cover 801 and the outer shell of the first workpiece 8 give way, the PCB board 802 inside the first workpiece 8 can be exposed.

[0052] The first driving mechanism 1 drives the adsorption mechanism 6 to move in the plane, move downward and release the adsorption, and the upper cover 801 can be placed on one side of the first workpiece 8. The code reader 3 is preferably installed on the side of the positioning camera 2. The first driving mechanism 1 drives the code reader 3 to move above the PCB board 802 in the plane, and the code reader 3 reads the two-dimensional code on the PCB board 802. The first driving mechanism 1 drives the code reader 3 to move above the second workpiece 16 in the plane, and the code reader 3 reads the two-dimensional code on the second workpiece 16. The code reader 3 compares the two two-dimensional codes to ensure that the two codes are consistent and uploads them to the MES system. The MES system generates a two-dimensional code instruction of the laser coding device 4 according to the two-dimensional code and sends it to the laser coding device 4. The first driving mechanism 1 drives the laser coding device 4 to move in the plane above the upper cover 801. The laser coding device 4 is assisted in positioning according to the feedback of the positioning camera 2, and marks on the upper cover 801 according to the two-dimensional code instruction; if the code reader 3 does not match the two two-dimensional codes, it will be fed back to the MES system, and the laser coding device 4 will not run without marking.

[0053] After marking is completed, the first driving mechanism 1 drives the adsorption mechanism 6 to move above the upper cover 801. The adsorption mechanism 6 descends to absorb the upper cover 801 and then rises, and then moves the upper cover 801 to above the first workpiece 8. The adsorption mechanism 6 descends and releases the adsorption, and places the marked upper cover 801 above the outer shell of the first workpiece 8. The first driving mechanism 1 drives the screw machine 5 to move to the screw position corresponding to the upper cover 801, and the screw machine 5 descends and rotates the screwdriver 501. After tightening the screw, the screw machine 5 rises, and the processing is completed. The first workpiece 8 and the second workpiece 16 can be removed and the next group of first workpieces 8 and second workpieces 16 can be placed.

[0054] In summary, the laser marking machine drives the positioning camera 2, the barcode reader 3, the laser coding device 4, the screw machine 5 and the adsorption mechanism 6 to operate automatically through the first driving mechanism 1, and integrates the functions of automatic positioning, automatic removal and locking of screws, automatic handling of the upper cover 801, automatic reading of codes and automatic marking. It saves manpower and improves processing efficiency through automatic operation. At the same time, the laser coding device 4 can operate according to the feedback of the positioning camera 2 and the barcode reader 3 to realize self-inspection of multi-code matching processing, effectively avoiding errors in code reading and coding caused by human factors, and can meet the marking requirements of multi-code matching such as three codes in one, so as to save the secondary disassembly and inspection process, effectively improve the yield rate, reduce production costs, and have good industrial adaptability and market application prospects.

[0055] In a preferred embodiment, Figure 1 and Figure 2 As shown, the first driving mechanism 1 includes a Y-axis module 11, an X-axis module 12, a first lifting driving mechanism 13, and a second lifting driving mechanism 14. The Y-axis module 11 is used to drive the X-axis module 12 to move forward and backward. The X-axis module 12 is used to drive the positioning camera 2, the code reader 3, the laser coding device 4, the first lifting driving mechanism 13, and the second lifting driving mechanism 14 to move left and right. The first lifting driving mechanism 13 is used to drive the screw machine 5 to move up and down, and the second lifting driving mechanism 14 is used to drive the adsorption mechanism 6 to move up and down.

[0056] For example, the Y-axis module 11 drives the X-axis module 12 to move forward and backward, which is equivalent to driving the positioning camera 2, the code reader 3, the laser coding device 4, the screw machine 5 and the adsorption mechanism 6 to move forward and backward. The X-axis module 12 further drives the positioning camera 2, the code reader 3, the laser coding device 4, the screw machine 5 and the adsorption mechanism 6 to move left and right, which can be combined with the forward and backward movement to realize the combined reciprocating movement in the two-dimensional plane. Through the independent operation of the first lifting drive mechanism 13 and the second lifting drive mechanism 14, the screw machine 5 and the adsorption mechanism 6 can be driven to move up and down respectively, which can meet the operation requirements of the positioning camera 2, the code reader 3, the laser coding device 4, the screw machine 5 and the adsorption mechanism 6, and at the same time make the structure simpler and more compact, which is conducive to simplifying the device.

[0057] In a preferred embodiment, the Y-axis module 11 includes a first motor 111, a substrate 112, at least one group of first screw rods 113, a first screw rod nut 114 and a first slide rail 115, the first motor 111 is used to drive the first screw rod 113 to rotate, the first screw rod 113 and the first slide rail 115 are longitudinally arranged, the first screw rod nut 114 cooperates with the first screw rod 113, the substrate 112 is connected to the first screw rod nut 114, the substrate 112 cooperates with the first slide rail 115, and the X-axis module 12 is arranged on the substrate 112.

[0058] In a preferred embodiment, the Y-axis module 11 includes two first slide rails 115 respectively located on two sides of the base plate 112 .

[0059] For example, Figure 1 and Figure 2 As shown, the first motor 111 and the first slide rail 115 are installed on the machine tool 7, and the first screw rod 113 is installed on the machine tool 7 through the screw rod seats at both ends. The first motor 111 is coaxially connected with the first screw rod 113. When the first motor 111 drives the first screw rod 113 to rotate on the screw rod seat, the first screw rod nut 114 is driven to change the rotation into a longitudinal linear motion along the first screw rod 113, driving the base plate 112 on the first screw rod nut 114 to slide along the first slide rail 115, and move back and forth along the first screw rod 113, that is, longitudinally, so that the X-axis module 12 on the base plate 112 can move accordingly. At the same time, the two first slide rails 115 are located on both sides of the base plate 112 to form a gantry structure, which can make the support operation more reliable and stable.

[0060] In a preferred embodiment, the X-axis module 12 includes a second motor 121, a second screw rod 122, a second screw rod nut 123 and a second slide rail 124, the second motor 121 is connected to the second screw rod 122, the second screw rod 122 and the second slide rail 124 are horizontally arranged, the second screw rod nut 123 cooperates with the second screw rod 122, the positioning camera 2, the code reader 3, the laser coding device 4, the first lifting drive mechanism 13 and the second lifting drive mechanism 14 are all connected to the second screw rod nut 123, and can all be slidably matched with the second slide rail 124.

[0061] For example, Figure 1 and Figure 2As shown, the second motor 121 and the second slide rail 124 are installed on the base plate 112, the second screw rod 122 is installed on the base plate 112 through the screw rod seats at both ends, the second motor 121 is coaxially connected with the second screw rod 122, the positioning camera 2, the code reader 3, and the laser coding device 4 are installed on the mounting plate matched with the second slide rail 124, there are three second slide rails 124, two second slide rails 124 are located on both sides of the mounting plate, the screw machine 5 and the adsorption mechanism 6 are connected to the mounting plate, and the screw machine 5 and the adsorption mechanism 6 can be slidably matched with the third second slide rail 124, and the second motor 121 drives the second screw rod 122 to move. When the rod 122 rotates on the screw seat, the second screw nut 123 is driven to change the rotation into a lateral linear motion along the second screw 122, driving the mounting plate connected to the second screw nut 123 to slide along the second slide rail 124, so that the positioning camera 2, the code reader 3, and the laser coding device 4 on the mounting plate move laterally left and right accordingly. Similarly, the screw machine 5 and the adsorption mechanism 6 can slide with the second slide rail 124 to stably move left and right, making the driving operation of the X-axis module 12 more stable, which is suitable for meeting the support and movement requirements of the positioning camera 2, the code reader 3, the laser coding device 4, the screw machine 5 and the adsorption mechanism 6.

[0062] In a preferred embodiment, the substrate 112 is provided with a clearance opening 116, and the positioning camera 2 and the laser coding device 4 can be placed in the clearance opening 116 for movement, for example, Figure 1 As shown, the code reader 3 is installed on the side of the positioning camera 2, and the two second slide rails 124 are located on both sides of the clearance opening 116. When the positioning camera 2, the code reader 3 and the laser coding device 4 move, they can illuminate the first workpiece 8 or the second workpiece 16 below through the clearance opening 116.

[0063] In a preferred embodiment, a plurality of positioning members 10 are included below the laser coding device 4, the screw machine 5 and the adsorption mechanism 6, for example, Figure 1 As shown, a plurality of positioning members 10 include at least two positioning columns 101 that cooperate with the mounting holes of the first workpiece 8. When the mass of the first workpiece 8 is relatively light, they are used to limit the displacement of the first workpiece 8 when the screw machine 5 tightens the screws. This is simpler and more reliable than positioning methods such as clamps. A plurality of positioning members 10 include a plurality of bosses 102 that cooperate with the four sides of the upper cover 801. The adsorption mechanism 6 can move the upper cover 801 between the plurality of bosses 102, which is used to limit the movement of the upper cover 801 during laser marking, thereby improving the marking accuracy and being more convenient for automated operation than manually supporting the first workpiece 8 or the upper cover 801.

[0064] In a preferred embodiment, Figure 3 and Figure 4As shown, the first lifting drive mechanism 13 includes a first support frame 131 and a first cylinder 132 arranged on the first support frame 131. The cylinder rod of the first cylinder 132 is connected to the screw machine 5. For example, the back of the first support frame 131 is slidably matched with the second slide rail 124, and the screw machine 5 is lifted and lowered by the extension and retraction of the vertical lever of the first cylinder 132.

[0065] In a preferred embodiment, the first lifting drive mechanism 13 includes a second support frame 133, the second support frame 131 slides in cooperation with the first support frame 131 in the vertical direction, and the screw machine 5 is mounted on the second support frame 133, for example, Figure 3 and Figure 4 As shown, the first support frame 131 is provided with a fourth slide rail 134, and the screw machine 5 is detachably mounted on the second support frame 133. The second support frame 133 and the fourth slide rail 134 are slidably matched. The first support frame 131 is provided with a limit plate 135 for limiting the downward movement of the screw machine 5. When the first cylinder 132 drives the screw machine 5 to descend, the second support frame 133 slides relative to the fourth slide rail 134 to improve the operating stability. When the screw machine 5 descends, the limit plate 135 is used to limit the descending stroke of the screw machine 5 to avoid impact damage to the screws.

[0066] In a preferred embodiment, the first lifting drive mechanism 13 includes a height sensor 136 located below the second support frame 133, for example, Figure 3 and Figure 4 As shown, the height sensor 136 is installed on the first support frame 131, and the second support frame 133 can contact the height sensor 136 to feedback a position signal when it moves downward.

[0067] In a preferred embodiment, Figure 4 As shown, the second lifting drive mechanism 14 includes a third support frame 141 and a second cylinder 142 arranged on the third support frame 141. The cylinder rod of the second cylinder 142 is connected to the adsorption mechanism 6. For example, the second support frame 133 also serves as the third support frame 141. The cylinder rod of the second cylinder 142 can be vertically extended and retracted to drive the adsorption mechanism 6 to rise and fall. The structure is simple and the operation is convenient.

[0068] In a preferred embodiment, the adsorption mechanism 6 includes a suction cup 601. For example, the suction cup 601 can be connected to a suction tube and an air suction device, and the adsorption or release of the upper cover 801 by the suction cup 601 can be controlled by opening and closing the air suction device.

[0069] Embodiment 2:

[0070] For workpieces of different shapes and sizes, simply placing the workpiece on the machine tool 7 may make it difficult for the workpiece to enter the corresponding processing area, affecting the positioning of the workpiece marking position, and further affecting the processing efficiency, product quality or processing application scope, such as Figures 5 to 7 As shown, another preferred embodiment of the laser marking machine of the present invention is different from Example 1 in that the laser marking machine also includes a transportation mechanism 9 and a carrier 15. The transportation mechanism 9 is used to drive the carrier 15 to move back and forth under the positioning camera 2, the code reader 3, the laser coding device 4, the screw machine 5 and the adsorption mechanism 6. The first workpiece 8 and the second workpiece 16 can be placed on the carrier 15, and the carrier 15 is driven by the transportation mechanism 9 to run, and the first workpiece 8 to be processed and the second workpiece 16 to be read are transported to the positioning camera 2, the code reader and the laser coding device 4 to speed up the automatic positioning. Similarly, it is also convenient for the screw machine 5 and the adsorption mechanism 6 to run. After the processing is completed, the transportation mechanism 9 can drive the carrier 15 to move out to improve the processing efficiency and product quality. For some workpieces with larger sizes and more biased identification code positions, it is more convenient to load and unload.

[0071] In a preferred embodiment, Figure 8 As shown, the positioning member 10 is disposed on the carrier 15 , which makes it easier to position the first workpiece 8 , the second workpiece 16 or the upper cover 801 , thereby simplifying the structure and further improving the processing accuracy.

[0072] In a preferred embodiment, Figure 8 As shown, the transport mechanism 9 includes an in-position sensor 91 and a limiting mechanism 92 provided corresponding to the carrier 15. The limiting mechanism 92 includes a first limiting member 921 located in front of the carrier 15 and lifted and lowered. For example, the limiting mechanism 92 includes a third cylinder 922. The third cylinder 922 is used to drive the first limiting member 921 to lift and lower. The in-position sensor 91 detects that the carrier 15 runs to a specified distance and then feeds back to the MES system, and controls the cylinder rod of the third cylinder 922 to drive the first limiting member 921 to rise, which can timely limit the carrier 15 from continuing to move forward so as to approach the bottom of the positioning camera 2 and cooperate with the positioning camera 2 for rapid positioning. A MARK point is provided on the carrier 15, and the positioning camera 2 can move and read the MARK point for positioning to determine the coordinate position of the workpiece.

[0073] In a preferred embodiment, Figure 8 and Fig. 9 As shown, the transport mechanism 9 includes at least two longitudinally arranged conveying tracks 93, and the conveying track 93 includes a track frame 931, a second driving mechanism 932, a conveyor belt 933, a third lifting driving mechanism 934 and a support member 935. The second driving mechanism 932 is used to drive the conveyor belt 933 to rotate around the track frame 931, and the third lifting driving mechanism 934 is used to drive the support member 935 to move up and down relative to the conveyor belt 933. The track frames 931 of the conveying tracks 93 on both sides of the conveying mechanism are provided with second limit members 936 located above the conveyor belt 933.

[0074] For example, Figure 8 and Fig. 9 As shown, the transport mechanism 9 includes two longitudinally arranged conveying tracks 93, the second driving mechanism 932 is a fourth motor 9321 installed on the track frame 931, the fourth motor 9321 is connected to a driving wheel 9322, and the track frame 931 is provided with a plurality of driven wheels 9323. The conveyor belt 933 is tensioned by passing around the driving wheel 9322 and the driven wheel 9323, and the fourth motor 9321 can drive the driving wheel 9322 to rotate, driving the transmission to rotate between the driven wheels 9323, so that the conveyor belt 933 rotates around the track frame 931. The carrier 15 is plate-shaped, so the carrier 15 can be placed on the conveyor belts 933 of the two conveying tracks 93, and the forward and backward movement of the carrier 15 can be realized by the clockwise or counterclockwise rotation of the conveyor belt 933.

[0075] In a preferred embodiment, the third lifting drive mechanism 934 includes a fourth cylinder 9341, and the fourth cylinder 9341 is used to drive the support member 935 to move up and down, for example, Figure 8 and Fig. 9 As shown, the support member 935 is a plate-shaped member arranged inside the track frame 931, the fourth cylinder 9341 is installed on the track frame 931, the cylinder rod of the fourth cylinder 9341 is connected to the support member 935 by passing through the bracket of the track frame 931, and the second limiting member 936 is an L-shaped structure and is arranged on the two track frames 931 at intervals. Then, the carrier 15 is placed on the conveyor belt 933 below the second limiting member 936. After the conveyor belt 933 drives the carrier 15 to move into place, the cylinder rod of the fourth cylinder 9341 drives the support member 935 to move to the conveyor belt 933. The support member 935 rises, and the support member 935 supports the carrier 15 to rise until it contacts the second limit member 936. At this time, the top and bottom of the carrier 15 are clamped by the second limit member 936 and the support member 935 respectively, and the carrier 15 is separated from the conveyor belt 933 to achieve the correct positioning. Similarly, after the cylinder rod of the fourth cylinder 9341 drives the support member 935 to descend, the carrier 15 can still be placed on the conveyor belt 933, and the conveyor belt 933 can drive the carrier 15 to be transported again. The structure is simple and the design is compact, so as to realize the rapid positioning of the carrier 15.

[0076] In a preferred embodiment, the transport mechanism 9 includes a third driving mechanism 94 and at least two parallel conveying tracks 93, wherein the third driving mechanism 94 is used to drive at least one conveying track 93 to move back and forth. Figure 8 and Fig. 9 As shown, the required size of the carrier 15 varies depending on the size of the workpiece to be processed. The outermost conveying track 93 is driven to move left and right by the third driving mechanism 94, and the distance between the conveying tracks 93 on both sides can be adjusted to meet the processing requirements of different workpieces, further improving the processing application range.

[0077] In a preferred embodiment, the third driving mechanism 94 includes a third motor 941, at least one group of third screw rods 942, a third screw rod nut 943 and a third slide rail 944. The third motor 941 is used to drive the third screw rod 942 to rotate. The third screw rod 942 and the third slide rail 944 are horizontally arranged. The third screw rod nut 943 cooperates with the third screw rod 942. The conveying rail 93 is connected to the third screw rod nut 943, and the conveying rail 93 and the third slide rail 944 are slidably matched.

[0078] In a preferred embodiment, the third driving mechanism 94 includes at least two sets of third screw rods 942, third screw rod nuts 943 and third slide rails 944, and the third motor 941 and the third screw rod 942 are coaxially connected to a transmission wheel 945, respectively, and the transmission wheel 945 is provided with a transmission belt 946.

[0079] For example, Figure 8 and Fig. 9 As shown, two sets of third screw rods 942, third screw rod nuts 943 and third slide rails 944 are arranged in parallel and close to the two ends of the conveying track 93, the third slide rails 944 are installed on the machine tool 7, the third screw rod 942 is installed on the machine tool 7 through the screw rod seats at both ends, the third motor 941 is installed on the screw rod seat or the machine tool 7, and the transmission belt 946 is tensioned between the transmission wheels 945. Then, the third motor 941 can drive one of the coaxial third screw rods 942 and the transmission wheel 945 to rotate, and the transmission wheel 945 can rotate through The transmission belt 946 and other transmission wheels 945 drive another third screw rod 942 to rotate on the screw rod seat, and drive the corresponding third screw rod nut 943 to move left and right along the third screw rod 942 under the sliding cooperation with the third slide rail 944, and then synchronously drive the conveying track 93 to move left and right synchronously to adjust the position of the conveying track 93. The transmission adjustment structure is compact and the support and operation are more stable. Similarly, when there are multiple carriers 15 and conveying rails 93, they can also be adjusted by correspondingly connecting multiple third screw rod nuts 943.

[0080] In summary, the workflow of the above laser marking machine can include the following steps:

[0081] S1. According to the size of the carrier 15 , control the third driving mechanism 94 to drive one of the conveying tracks 93 to move back and forth left and right, adjust the distance between the two conveying tracks 93 , and place the carrier 15 on the conveyor belts 933 of the two conveying tracks 93 .

[0082] S2. Place the first workpiece 8 and the second workpiece 16 on the carrier 15 respectively. The first workpiece 8 is positioned by cooperating with the positioning member 10 of the carrier 15. Drive the conveyor belt 933 to operate, and transport the carrier 15 and the first workpiece 8 and the second workpiece 16 thereon to the inside of the laser marking machine. After the in-position sensor 91 senses that the carrier 15 is in position, the first limiting member 921 of the limiting mechanism 92 rises to limit the carrier 15 from moving forward. The third lifting drive mechanism 934 drives the support member 935 to rise, and fixes the carrier 15 between the second limiting member 936 and the support member 935.

[0083] S3, the X-axis module 12 and the Y-axis module 11 of the first driving mechanism 1 drive the positioning camera 2 to move above the carrier 15 in the plane, and the positioning camera 2 reads the MARK point of the carrier 15 for positioning to determine the coordinate position of the workpiece.

[0084] S4, the X-axis module 12 and the Y-axis module 11 of the first driving mechanism 1 drive the screw machine 5 to move above the first workpiece 8 in the plane, the first lifting driving mechanism 13 drives the screw machine 5 to descend, the screw machine 5 rotates to remove the screws on the first workpiece 8, and then the screw machine 5 rises.

[0085] S5. The X-axis module 12 and the Y-axis module 11 of the first driving mechanism 1 drive the suction cup 601 of the adsorption mechanism 6 to move above the first workpiece 8 in the plane. The second lifting driving mechanism 14 drives the suction cup 601 to descend and adsorb the upper cover 801 of the first workpiece 8. The suction cup 601 rises and moves in the plane to transport the upper cover 801 to above the positioning member 10 in the designated area of ​​the carrier 15. The suction cup 601 descends and places the upper cover 801 in the designated area. At this time, the PCB board 802 inside the first workpiece 8 is exposed.

[0086] S6. The X-axis module 12 and the Y-axis module 11 of the first driving mechanism 1 drive the positioning camera 2 to move in the plane, and move to the top of the PCB board 802 and the top of the second workpiece 16 in turn, so that the code reader 3 on the side of the positioning camera 2 reads the QR code on the PCB board 802 and the second workpiece 16 respectively, ensuring that the two codes are consistent and uploading them to the MES system.

[0087] S7. According to the feedback signal of the code reader 3, the MES system generates a two-dimensional code instruction and transmits it to the laser coding device 4. The X-axis module 12 and the Y-axis module 11 of the first driving mechanism 1 drive the laser coding device 4 to move in the plane and mark the upper cover 801.

[0088] S8. The first driving mechanism 1 drives the suction cup 601 to move in the plane to above the marked upper cover 801. The suction cup 601 descends, adsorbs the upper cover 801 and then rises. The suction cup 601 moves in the plane to above the outer shell of the first workpiece 8. The suction cup 601 descends and releases the adsorption, placing the upper cover 801 on the outer shell of the first workpiece 8.

[0089] S9, the first driving mechanism 1 drives the screw machine 5 to move above the screw position, the screw machine 5 descends and rotates to tighten the screw, and then the screw machine 5 rises, and the third lifting driving mechanism 934 drives the support member 935 to descend, and the carrier 15 is placed on the conveyor belt 933, and the conveyor belt 933 transports the carrier 15 in reverse to withdraw the processing area, and the second workpiece 16 and the processed first workpiece 8 are removed. The entire workflow is completed, and steps S2 to S9 are repeated to perform continuous processing, which can avoid manual errors in code reading and coding, and meet the marking processing requirements of multi-code matching through automated operation, effectively improving processing efficiency and yield rate.

[0090] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention, and they are not intended to limit the scope of protection of the present invention. For example, the connecting cables can be installed through the cable protection chain 17 to prevent the cables from being entangled during operation. Any equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laser marking machine, characterized in that: The invention comprises a first driving mechanism (1), a positioning camera (2), a code reader (3), a laser coding device (4), a screw machine (5) and an adsorption mechanism (6); the first driving mechanism (1) is used to drive the positioning camera (2), the code reader (3), the laser coding device (4), the screw machine (5) and the adsorption mechanism (6) to move back and forth in a plane, and to drive the screw machine (5) and the adsorption mechanism (6) to move up and down respectively; the laser coding device (4) is used to operate according to feedback from the positioning camera (2) and the code reader (3).

2. The laser marking machine according to claim 1, characterized in that: The first driving mechanism (1) comprises a Y-axis module (11), an X-axis module (12), a first lifting driving mechanism (13), and a second lifting driving mechanism (14); the Y-axis module (11) is used to drive the X-axis module (12) to move forward and backward; the X-axis module (12) is used to drive the positioning camera (2), the code reader (3), the laser coding device (4), the first lifting driving mechanism (13), and the second lifting driving mechanism (14) to move left and right; the first lifting driving mechanism (13) is used to drive the screw machine (5) to move upward and downward; and the second lifting driving mechanism (14) is used to drive the adsorption mechanism (6) to move upward and downward.

3. The laser marking machine according to claim 2, characterized in that: The Y-axis module (11) comprises a first motor (111), a base plate (112), at least one group of first screw rods (113), a first screw rod nut (114) and a first slide rail (115); the first motor (111) is used to drive the first screw rod (113) to rotate; the first screw rod (113) and the first slide rail (115) are arranged longitudinally; the first screw rod nut (114) cooperates with the first screw rod (113); the base plate (112) is connected to the first screw rod nut (114); the base plate (112) cooperates with the first slide rail (115); and the X-axis module (12) is arranged on the base plate (112).

4. The laser marking machine according to claim 2, characterized in that: The X-axis module (12) comprises a second motor (121), a second screw rod (122), a second screw rod nut (123) and a second slide rail (124); the second motor (121) is connected to the second screw rod (122); the second screw rod (122) and the second slide rail (124) are arranged transversely; the second screw rod nut (123) cooperates with the second screw rod (122); the positioning camera (2), the code reader (3), the laser coding device (4), the first lifting drive mechanism (13) and the second lifting drive mechanism (14) are all connected to the second screw rod nut (123) and can be slidably matched with the second slide rail (124).

5. The laser marking machine according to claim 1, characterized in that: It comprises a plurality of positioning members (10) located below a laser coding device (4), a screw machine (5) and an adsorption mechanism (6).

6. The laser marking machine according to any one of claims 1 to 5, characterized in that: It comprises a transport mechanism (9) and a carrier (15), wherein the transport mechanism (9) is used to drive the carrier (15) to move back and forth below a positioning camera (2), a code reader (3), a laser coding device (4), a screw machine (5) and an adsorption mechanism (6).

7. The laser marking machine according to claim 6, characterized in that: The transport mechanism (9) comprises an in-position sensor (91) and a limit mechanism (92) arranged corresponding to the carrier (15); the limit mechanism (92) comprises a first limit member (921) which is located in front of the carrier (15) and is lifted and lowered.

8. The laser marking machine according to claim 6, characterized in that: The transport mechanism (9) comprises at least two longitudinally arranged transport tracks (93), the transport track (93) comprising a track frame (931), a second drive mechanism (932), a conveyor belt (933), a third lifting drive mechanism (934) and a support member (935), the second drive mechanism (932) being used to drive the conveyor belt (933) to rotate around the track frame (931), the third lifting drive mechanism (934) being used to drive the support member (935) to move up and down relative to the conveyor belt (933), and the track frames (931) of the transport tracks (93) on both sides of the transport mechanism are provided with second limit members (936) located above the conveyor belt (933).

9. The laser marking machine according to claim 6, characterized in that: The transport mechanism (9) comprises a third drive mechanism (94) and at least two parallel transport tracks (93), wherein the third drive mechanism (94) is used to drive at least one transport track (93) to move back and forth left and right.

10. The laser marking machine according to claim 9, characterized in that: The third driving mechanism (94) comprises a third motor (941), at least one set of third screw rods (942), a third screw rod nut (943) and a third slide rail (944); the third motor (941) is used to drive the third screw rod (942) to rotate; the third screw rod (942) and the third slide rail (944) are arranged transversely; the third screw rod nut (943) cooperates with the third screw rod (942); the conveying track (93) is connected to the third screw rod nut (943); and the conveying track (93) and the third slide rail (944) are slidably matched.

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