Multifunctional filter screen feeding table for die-casting workshop

Abstract

The application discloses a multifunctional filter screen feeding table for a die casting workshop, which comprises a feeding table, a carrying device and a marking device, wherein the feeding table is provided with a feeding position, a discharging position and a quick-change gripper placing position; the feeding position is used for placing at least one full filter screen tray; the discharging position is used for placing an empty tray; and the quick-change gripper placing position is used for placing a quick-change gripper; the carrying device is arranged on the feeding table and is used for carrying the empty tray from the feeding position to the discharging position; and the marking device is arranged on the feeding table and is used for marking a die casting product; an external robot realizes feeding of the full filter screen tray, taking the filter screen from the tray and installing the filter screen into a die casting mold, taking the die casting product from the die casting mold, marking the die casting product and placing the die casting product into a storage position, and discharging the empty tray through the quick-change gripper.

Description

Technical Field

[0001] This invention relates to the field of industrial automated die-casting production equipment technology, and in particular to a multifunctional filter screen loading platform for die-casting workshops. Background Technology

[0002] In industrial die-casting production workshops, filter screens are crucial tooling used to filter impurities from the molten metal before die-casting, placed at the mold's pouring gate. After die-casting, the casting with the filter screen is removed and undergoes a series of subsequent processes such as cooling, transfer, and marking. Currently, traditional filter screen loading platforms have a single function, typically serving only as a simple placement platform. With the development of industrial automation, robotic arms (robots) are increasingly being used for material handling, but existing loading platforms can only perform single-function loading. After the filter screen tray is empty, manual intervention is still required to unload it, resulting in low efficiency and hindering long-term, precise automated loading and unloading. Furthermore, to trace product quality, castings need to be marked (e.g., engraving production batch, date, model, etc.). Traditionally, marking is performed as a separate process at a different station by a different machine. This layout leads to a longer production line, increased material handling frequency, larger floor space, and limited overall production efficiency. Summary of the Invention

[0003] To overcome the shortcomings of the existing technology, the present invention provides a multifunctional filter screen loading platform for die casting workshops, which has the advantage of making the die casting production process more compact and efficient.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A multifunctional filter screen loading platform for a die-casting workshop, comprising:

[0006] The material platform has a material replenishment position, a material discharge position, and a quick-change gripper placement position. The material replenishment position is used to place at least one material tray filled with filter screens, the material discharge position is used to place an empty material tray, and the quick-change gripper placement position is used to place a quick-change gripper.

[0007] A conveying device, installed on the material platform, is used to move empty material trays from the replenishment position to the unloading position; and,

[0008] A marking device is installed on the material platform to mark the die-cast parts;

[0009] The external robot uses the quick-change gripper to load a tray full of filter screens, remove the filter screens from the tray and install them into the die-casting mold, remove the die-casting parts from the die-casting mold, mark them and place them in the storage position, and unload the empty tray.

[0010] By adopting the above technical solution, the three independent processes of filter screen loading, casting marking, and gripper changing platform are integrated into one machine, reducing material handling links, saving workshop floor space, and making the die casting production process more compact and efficient. The external robot, through quick-change grippers, can complete a series of operations from picking up the filter screen from the material tray to load the mold, picking up the die casting for marking, to emptying the material tray, without frequent manual intervention, significantly improving the automation and continuity of die casting production.

[0011] Optionally, the conveying device includes a transfer mechanism; the transfer mechanism includes a transfer frame that is laterally mounted on the material platform, a transfer drive assembly for driving the transfer frame, a transfer claw that is vertically and vertically mounted on the transfer frame, and a claw lifting drive assembly for driving the transfer claw to vertically lift; the transfer claw is used to grab an empty material tray.

[0012] By adopting the above technical solution, the transfer mechanism, through the coordinated translational movement of the transfer frame and the vertical lifting movement of the transfer claw, can accurately grasp and transfer empty material trays from the replenishment position to the unloading position, thus automating the handling of empty material trays. The claw lifting drive component provides stable lifting power for the transfer claw, ensuring smooth and accurate positioning when grasping and releasing the material tray, avoiding bumps or positional deviations that may occur during manual handling, and improving the efficiency and reliability of empty material tray processing.

[0013] Optionally, the transfer gripper includes a transfer main plate and a pair of translational gripper components respectively disposed at both ends of the transfer main plate; the translational gripper component includes a translational gripper driver and a translational gripper; the pair of translational grippers are driven by the pair of translational gripper drivers to move away from or towards each other; at least one limiting pin is provided on the bottom surface of the transfer main plate; the axial direction of the limiting pin is parallel to the moving direction of the transfer gripper; the tray has a limiting insertion hole for the limiting pin to be inserted.

[0014] By adopting the above technical solution, the translational claw drive can drive a pair of translational claws to move closer or further apart, thereby achieving stable clamping of trays of different sizes and improving the versatility and gripping reliability of the transfer claw. When the transfer claw descends to grip the tray, the limit pin will accurately insert into the limit hole of the tray, positioning the tray in the horizontal direction to prevent the tray from sliding or shifting due to inertia during transportation, ensuring the stability of the tray's posture during transfer, and further guaranteeing the accuracy of transporting empty trays from the replenishment position to the unloading position.

[0015] Optionally, the material replenishment position is provided with several material trays stacked vertically; the conveying device further includes a feeding mechanism; the feeding mechanism is used to drive the several material trays to rise to the same height so that the uppermost material tray is at a set height.

[0016] By adopting the above technical solution, the feeding mechanism can drive several stacked trays to rise to the same height, ensuring that the top tray remains at a set height. This guarantees that the starting position of the external robot when picking up the filter screen is consistent each time, eliminating the need for frequent adjustments to the robot's grasping trajectory and parameters. This reduces the complexity of robot programming and improves the efficiency and accuracy of filter screen grasping. Simultaneously, multiple trays filled with filter screens can be placed at the replenishment station at once, reducing the frequency of manual replenishment and further enhancing the continuity of automated production, avoiding production interruptions caused by frequent replenishment.

[0017] Optionally, the feeding mechanism includes a feeding frame vertically and vertically mounted on the material platform and a feeding drive assembly for driving the feeding frame to move vertically and vertically; the feeding frame has four feeding support rods; and the plurality of material trays are placed on the four feeding support rods.

[0018] By adopting the above technical solution, the feeding drive assembly can stably drive the feeding frame to vertically lift and lower. Four feeding support rods provide stable support to the stacked trays from the bottom, ensuring the overall structural stability of the trays during lifting and preventing tilting or swaying. The four feeding support rods ensure even force distribution on the trays, effectively preventing deformation or damage due to excessive localized stress. They also provide reliable guidance for the smooth lifting and lowering of the trays, ensuring the feeding mechanism can accurately drive the uppermost tray to the set height, meeting the robot's requirement for continuous and stable gripping of filter screens.

[0019] Optionally, the unloading position is provided with an unloading lifting frame; a transmission component is provided between the unloading lifting frame and the feeding frame; the feeding frame and the unloading lifting frame move in opposite directions and move at equal intervals, so that the position on the feeding frame that grabs an empty tray and the position on the unloading lifting frame that places an empty tray are at the same height.

[0020] By adopting the above technical solution, the transmission component can synchronously transmit the lifting motion of the feeding frame to the unloading lifting frame, enabling both to move in opposite directions and at equal intervals under the action of the feeding drive component. When the feeding frame rises to maintain the material tray at the replenishment position at the set height, the unloading lifting frame will descend by the same distance, thus always keeping the position of the empty material tray to be grabbed on the feeding frame and the position of the empty material tray on the unloading lifting frame at the same horizontal height. This design ensures that the transfer mechanism does not need to make additional height adjustments during the handling of empty material trays; the transfer of material trays can be completed simply by translation. This simplifies the movement trajectory of the transfer claw, shortens the handling time, and further improves the automation efficiency and continuity of empty material tray loading and unloading. It also reduces the risk of material tray placement deviation or collision due to height differences.

[0021] Optionally, the material tray has four tray legs; the top of each tray leg has a stacking limiting hole, and the bottom has a stacking limiting pin that mates with the stacking limiting hole; the replenishment position has four replenishment legs; each replenishment leg corresponds to one of the tray legs; the top of each replenishment leg has a replenishment limiting hole that mates with the stacking limiting pin; the unloading position has four unloading legs; each unloading leg corresponds to one of the tray legs; the top of each unloading leg has an unloading limiting hole that mates with the stacking limiting pin.

[0022] By adopting the above technical solution, when multiple trays are stacked at the replenishment position, the stacking limiting hole at the top of the lower tray's support leg can precisely engage with the stacking limiting pin at the bottom of the upper tray's support leg, forming a vertical positioning between the upper and lower trays. This prevents the stacked trays from experiencing relative horizontal displacement or tipping during the upward movement driven by the feeding mechanism. The replenishment support leg at the replenishment position is equipped with a replenishment limiting hole at its top, which engages with the stacking limiting pin of the bottom tray's support leg to ensure the accurate initial placement of the entire stacked tray group at the replenishment position. Similarly, the unloading support leg at the unloading position engages with the stacking limiting pin of the empty tray's support leg through the unloading limiting hole at its top, ensuring stable positioning of the empty tray during stacking and storage, preventing unstable tray placement from affecting subsequent automated operations or causing safety hazards. This multi-layered limiting structure design comprehensively improves the structural stability and positional accuracy of the trays during stacking, handling, and storage, from the individual trays themselves to the coordination between trays and the replenishment and unloading positions.

[0023] Optionally, the marking device includes a laser marking mechanism and a scanning mechanism; the laser marking mechanism is used to mark production information on the die-cast parts; the scanning mechanism is used to scan the production information and upload the production information to an external system.

[0024] By adopting the above technical solution, the laser marking mechanism can accurately engrave production information such as batch number, date, and model number on the surface of die-cast parts using laser technology. The markings are clear and not easily worn, ensuring the long-term effectiveness of product traceability information. The scanning mechanism can scan the engraved production information in real time and upload the data to an external system, realizing automated collection and recording of production information. This facilitates subsequent product quality traceability, production data statistical analysis, and production process monitoring, forming a closed loop from marking to information management and improving the intelligent management level of die-casting production.

[0025] Optionally, the laser marking mechanism includes a marking machine, a marking vertical adjustment component, and a marking lifting seat; the marking vertical adjustment component is used to adjust the vertical position of the marking lifting seat; the marking machine is connected to the marking lifting seat; the marking lifting seat includes a first support seat connected to the marking vertical adjustment component, a second support seat connected to the marking machine, and an elastic element disposed between the first support seat and the second support seat; the second support seat is horizontally slidably disposed on the first support seat; the elastic element applies pressure to the second support seat toward the robot direction.

[0026] By adopting the above technical solution, the vertical adjustment component for marking can drive the entire marking lifting seat to adjust its vertical position, thereby moving the marking machine up and down to adapt to the marking needs of die-cast parts of different heights and specifications, thus expanding the applicability of the equipment. The first and second support seats of the marking lifting seat are connected by an elastic element, and the second support seat can slide horizontally on the first support seat. When the robot brings the die-cast part close to the marking machine, the die-cast part will contact the marking machine or its associated components and push the second support seat to move horizontally against the pressure of the elastic element. This elastic buffer structure can avoid damage to the die-cast part or the marking machine caused by rigid contact, while ensuring the relative position between the die-cast part and the laser head of the marking machine remains stable during marking, guaranteeing marking accuracy. The pressure applied by the elastic element towards the robot can automatically reset the second support seat and the marking machine after the die-cast part leaves, preparing for the next marking operation.

[0027] Optionally, the marking machine is provided with a pressing frame; the robot presses the die-cast part against the pressing frame to overcome the pressure of the elastic element, thereby driving the marking machine and the second support base to move horizontally along the first support base; the pressing frame is provided with laser through holes.

[0028] By adopting the above technical solution, the pressing frame provides a stable pressing reference surface for the die-casting. When the robot presses the die-casting against the pressing frame, it ensures that the die-casting's posture is fixed during the marking process, avoiding marking position deviation or blurry markings caused by the die-casting shaking. Simultaneously, the pressing action overcomes the pressure of the elastic element, driving the marking machine and the second support base to move horizontally, enabling a stable contact pressure to be formed between the die-casting and the laser head of the marking machine, further ensuring the relative positional accuracy during marking. The laser through-hole on the pressing frame provides a channel for laser marking, ensuring that the laser beam can accurately pass through and act on the marking area on the die-casting surface. This does not affect the stable support of the pressing frame for the die-casting while ensuring smooth marking operation, achieving an organic combination of structural function and marking requirements. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0030] Figure 2 This is a schematic diagram of the left-side structure of Embodiment 1 of the present invention.

[0031] Figure 3 This is a schematic diagram of the material tray according to Embodiment 1 of the present invention.

[0032] Figure 4 This is a schematic diagram of the feeding mechanism according to Embodiment 1 of the present invention.

[0033] Figure 5 This is a schematic diagram of the transfer mechanism according to Embodiment 1 of the present invention.

[0034] Figure 6 This is a schematic diagram of the marking device according to Embodiment 1 of the present invention.

[0035] Figure 7 This is a top view of the marking lifting seat according to Embodiment 1 of the present invention.

[0036] Figure 8 This is a partial structural schematic diagram of Embodiment 2 of the present invention.

[0037] Figure 9 This is a partial structural schematic diagram of Embodiment 3 of the present invention.

[0038] Figure 10 This is a partial structural schematic diagram of Embodiment 3 of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10. Material platform; 11. Main support; 12. Workbench; 120. Gripper mounting slot; 13. Circular positioning pin; 14. Rhomboid positioning pin; 15. Intermediate transmission bracket; 16. Intermediate transmission gear;

[0041] 20. Handling device; 21. Feeding support; 211. Feeding leg; 2110. Feeding limit hole; 22. Unloading support; 221. Unloading leg; 23. Feeding mechanism; 231. Feeding drive assembly; 232. Feeding drive plate; 233. Feeding drive linkage; 234. Feeding support plate; 235. Feeding support rod; 236. Bushing; 237. Drive rack; 24. Transfer mechanism; 241. Transfer drive assembly; 242. First linear guide; 244. Lifting drive assembly; 245. Transfer main plate; 246. 247. Limit pin; 2471. Translation claw component; 2472. Translation claw drive component; 2473. Translation claw; 248. Buffer limiter; 249. Clamping assembly; 2491. Clamping drive component; 2492. Clamping plate; 24920. Vertical inlet; 2493. Storage sleeve; 2494. Spring plunger; 25. Unloading lifting frame; 251. Unloading support plate; 252. Unloading support rod; 253. Driven rack; 26. Pushing assembly; 261. Vertical push component; 262. Push plate; 263. Push rod; 27. Monitoring sensor;

[0042] 30. Marking device; 31. Marking vertical adjustment assembly; 311. Marking vertical adjustment frame; 32. Marking lifting seat; 321. Intermediate seat; 322. First limit seat; 323. Second limit seat; 324. Second linear guide rail; 325. Main connecting seat; 326. Limit bolt; 327. Compression spring; 328. Auxiliary connecting parts; 329. Main connecting plate; 33. Marking machine; 331. Laser support; 332. Laser head; 34. Pressing frame; 35. Scanning bracket; 36. Barcode scanner; 37. Display;

[0043] 40. Quick-change gripper; 41. Quick-change connector; 42. Quick-change connector connecting plate; 43. Connecting neck; 44. Gripper body plate; 45. Material tray loading / unloading gripper; 46. Filter screen gripper; 47. Die-casting gripper;

[0044] 50. Material tray; 51. Material tray body; 510. Main placement slot; 511. Limiting insertion hole; 512. Vertical clearance hole; 52. Material tray support leg; 53. Upper support leg; 530. Stacking limiting insertion hole; 54. Lower support leg; 541. Support body; 542. Stacking limiting pin;

[0045] 60. Filter screen. Detailed Implementation

[0046] The following is in conjunction with the appendix Figures 1-10 The present invention will be described in further detail below.

[0047] Example 1: A multifunctional filter screen loading platform for a die-casting workshop is disclosed, with reference to... Figure 1 and Figure 2The system includes a material platform 10, a conveying device 20, a marking device 30, and a control system. The material platform 10 includes a main support 11 and a worktable 12 fixed to the main support 11. The worktable 12 has a material replenishment position, a material unloading position, and a quick-change gripper placement position. The material replenishment position is used to hold a tray 50 filled with filter screens 60. The conveying device 20 is located on the material platform 10 and is used to move empty trays from the material replenishment position to the material unloading position. The conveying device 20 is also located on the material platform 10 and is used to mark die-cast parts. The quick-change gripper placement position is used to hold a quick-change gripper 40. An external robot uses the quick-change gripper 40 to load trays 50 filled with filter screens 60, remove filter screens 60 from trays 50 and install them into the die-casting mold, remove die-cast parts from the die-casting mold, mark them, and place them in the storage position, and unload empty trays 50. The control system controls the entire material platform.

[0048] refer to Figure 3 The tray 50 includes a tray body 51 and four tray legs 52. The tray body 51 is rectangular plate-shaped, and the four tray legs 52 are respectively disposed at the four corners of the tray body 51. The tray body 51 has a plurality of rectangular arrayed placement holes. The placement holes penetrate the tray body 51 and are composed of an upper placement main groove 510 and a lower vertical clearance hole 512. The placement main groove 510 and the vertical clearance hole 512 are coaxially arranged, and the diameter of the placement main groove 510 is larger than the diameter of the vertical clearance hole 512. The filter screen 60 is frustum-shaped, and its opening is located on the side with the larger diameter. The filter screen 60 is placed in the placement main groove 510 with its opening facing downwards, and its lower end abuts against the lower wall of the placement main groove 510. In other embodiments, the tray body 51 can be other shapes, and the arrangement of the placement holes can also be modified accordingly. For example, if the tray body 51 is disc-shaped, the arrangement of the placement holes can be a circumferential array.

[0049] refer to Figure 3The tray support 52 includes an upper support 53 fixed to the upper end face of the tray body 51 and a lower support 54 fixed to the lower end face of the tray body 51. The upper end face of the upper support 53 has a stacking limiting insertion hole 530. The lower support 54 includes a support body 541 fixedly connected to the lower end face of the tray body 51 and a stacking limiting pin 542 fixed to the lower end face of the support body 541. The stacking limiting pin 542 is adapted to the stacking limiting insertion hole 530. In this way, multiple trays 50 can be stacked vertically, and the upper stacking limiting pin 542 inserts into the lower adjacent stacking limiting insertion hole 530, making the position of the stacked trays 50 more stable. To cooperate with the material tray 50, a material replenishment support 21 is provided at the material replenishment position. The material replenishment support 21 includes four material replenishment legs 211, which correspond one-to-one with the material tray legs 52. The top of the material replenishment legs 211 has a material replenishment limiting hole 2110 that cooperates with the stacking limiting pin 542. A material unloading support 22 is provided at the material unloading position. The material unloading support 22 includes four material unloading legs 221, which correspond one-to-one with the material tray legs 52. The top of the material unloading legs 221 has a material unloading limiting hole that cooperates with the stacking limiting pin 542.

[0050] refer to Figure 1 , Figure 2 and Figure 5The conveying device 20 includes a transfer mechanism 24; the transfer mechanism 24 includes a transfer frame 243 that is laterally mounted on the material table 10, a transfer drive assembly 241 for driving the transfer frame 243, a transfer claw that is vertically mounted on the transfer frame 243, and a claw lifting drive assembly 244 for driving the transfer claw to vertically lift; the transfer claw is used to grab empty material trays 50. The transfer frame 243 is gantry-shaped, and the lower ends of its pair of vertical parts are respectively connected to the upper end face of the worktable 12 through the first linear guide rail 242; the transfer drive assembly 241 is a cylinder; of course, other linear drive components, such as electric cylinders, can also be used; in order to accurately control the moving displacement of the transfer frame 243, buffer limiters 248 are respectively provided at both ends of the first linear guide rail 242. The transfer gripper includes a transfer main plate 245 and a pair of translational gripper components 247 respectively disposed at both ends of the transfer main plate 245. Each translational gripper component 247 includes a translational gripper drive 2471 and a translational gripper 2472. The translational gripper drive 2471 is a cylinder; however, other linear drive components, such as an electric cylinder, can also be used. The pair of translational grippers 2472 move away from or closer to each other under the drive of the pair of translational gripper drive components 2471. At least one limiting pin 246 is provided on the bottom surface of the transfer main plate 245. The axial direction of the limiting pin 246 is parallel to the moving direction of the transfer gripper. The tray 50 has a limiting insertion hole 511 for inserting the limiting pin 246. The gripper lifting drive assembly 244 is a cylinder; however, other linear drive components, such as an electric cylinder, can also be used. To improve the lifting accuracy of the transfer main plate 245, a guide structure is provided on the transfer main plate 245. The guide structure includes several vertical guide rods and several vertical guide sleeves. The vertical guide sleeves are fixed on the worktable 12. The vertical guide rods correspond one-to-one with the vertical guide sleeves and pass vertically through the vertical guide sleeves on the corresponding sides. The upper ends of all the vertical guide rods are connected as one unit through a connecting plate.

[0051] The above refers to the handling of a single tray 50. When the replenishment position is equipped with multiple trays 50 stacked on top of each other, a feeding mechanism 23 is also provided at the replenishment position. The feeding mechanism 23 is used to drive several trays 50 to rise to the same height so that the uppermost tray 50 is at a set height, so that the robot can pick up the filter screen 60 from a fixed height and the handling device 20 can pick up the empty tray 50 from a fixed position.

[0052] refer to Figure 4The feeding mechanism 23 includes a feeding frame vertically lifted and lowered on the worktable 12 and a feeding drive assembly 231 for driving the feeding frame vertically up and down. The feeding frame includes a feeding support plate 234, four feeding support rods 235, two feeding drive connecting rods 233, and a feeding drive plate 232. The four feeding support rods 235 and the two feeding drive connecting rods 233 are parallel to each other and fixed to the upper surface of the feeding support plate 234. The four feeding support rods 235 and the two feeding drive connecting rods 233 pass vertically through the worktable 12. To ensure the vertical lifting of the four feeding support rods 235 and the two feeding drive connecting rods 233, the feeding mechanism 234 is designed to support the feeding frame vertically up and down. The smoothness and accuracy of the lifting and lowering of the moving link 233 are ensured by six bushings 236 fixed on the worktable 12; four feeding support rods 235 and two feeding drive links 233 vertically pass through the six bushings 236 respectively; four feeding feet 211 are fixed to the upper ends of the four feeding support rods 235 respectively; the feeding drive plate 232 is fixed between the upper ends of a pair of feeding drive links 233; the feeding drive assembly 231 is fixed on the worktable 12 and is used to drive the feeding drive plate 232 to lift and lower vertically. The feeding drive assembly 231 is a cylinder; other linear drive components, such as electric cylinders, can also be used. During operation, when the uppermost empty tray 50 is moved to the unloading position by the transfer mechanism 24, the feeding drive assembly 231 drives the remaining trays to rise, so that the uppermost empty tray 50 reaches the set position, that is, the position of the previous tray 50.

[0053] refer to Figure 6 and Figure 7 The marking device 30 includes a laser marking mechanism, a scanning mechanism, and a display 37; the laser marking mechanism is used to mark production information on die-cast parts; the scanning mechanism is used to scan production information and upload the production information to an external system.

[0054] refer to Figure 6 The laser marking mechanism includes a marking machine 33, a marking vertical adjustment component 31, and a marking lifting seat 32. The marking vertical adjustment component 31 is used to adjust the vertical position of the marking lifting seat 32. The marking machine 33 is connected to the marking lifting seat 32. The marking lifting seat 32 includes a first support seat connected to the marking vertical adjustment component 31, a second support seat connected to the marking machine 33, and an elastic element disposed between the first support seat and the second support seat. The second support seat is horizontally slidably disposed on the first support seat. The elastic element applies pressure to the second support seat in the direction of the robot.

[0055] refer to Figure 6 and Figure 7The marking vertical adjustment assembly 31 includes a marking vertical support, a marking vertical adjustment component, and a marking vertical adjustment frame 311. The marking vertical support is fixed to the upper surface of the workbench 12. The marking vertical adjustment component is a ball screw mechanism. The marking vertical adjustment frame 311 is vertically slidably mounted on the marking vertical support and is fixedly connected to the screw nut of the ball screw mechanism. Considering that the adjustment frequency is not high in actual production, a handwheel is fixed to the upper end of the screw. The operator drives the ball screw mechanism through the handwheel, thereby driving the marking vertical adjustment frame 311 to rise and fall vertically. The marking machine 33 includes a laser support 331 and a laser head 332 fixed on the laser support 331. The laser support 331 and the marking vertical adjustment frame 311 are connected through a marking lifting seat 32.

[0056] refer to Figure 7 The marking lifting seat 32 includes a first support seat connected to the marking vertical adjustment assembly 31, a second support seat connected to the marking machine 33, and an elastic element disposed between the first and second support seats. The second support seat is horizontally slidably disposed on the first support seat. The elastic element applies pressure to the second support seat in the direction of the robot. The first support seat includes an intermediate seat 321, a first limiting seat 322, and a second limiting seat 323. The intermediate seat 321 is fixedly connected to the marking vertical adjustment frame 311 by bolts. The first limiting seat 322 and the second limiting seat 323 are respectively fixed to both ends of the intermediate seat 321 by bolts. The second support seat includes a main connecting seat 325, an auxiliary connecting member 328, and a main connecting plate 329. The main connecting seat 325 is connected to the intermediate seat 321 via a second linear guide rail 324. The main connecting plate 329 is fixed to the main connecting seat 325 by bolts. The auxiliary connecting member 328 is fixed to the main connecting seat 325 by bolts. The laser support 331 is fixed to the main connecting plate 329 by bolts between the main connecting seat 325 and the main connecting plate 329. The elastic element includes a limiting bolt 326 that passes through and is screwed onto the second limiting seat 323 and a compression spring 327 that is sleeved on the limiting bolt 326. The axial direction of the limiting bolt 326 is parallel to the direction of the second linear guide 324. The main connecting seat 325 is formed with a relief groove to avoid the limiting bolt 326. The compression spring 327 is sleeved on the screw of the limiting bolt 326 and one end abuts against the second limiting seat 323 and the other end abuts against the main connecting seat 325.

[0057] Under normal conditions, the main connecting seat 325 abuts against the first limit seat 322 under the action of the compression spring 327. When laser marking is required, the robot can drive the marking machine 33 to move horizontally to the limit position through the die-casting part, that is, the compression spring 327 is compressed to the limit position. This design ensures that the laser head 332 and the die-casting part are kept at a set distance during laser marking, thereby improving the stability of laser marking quality.

[0058] To further improve the quality of laser marking, a sideways Z-shaped pressure frame 34 is fixed on the laser support 331. A laser through hole is formed on the vertical part of the pressure frame 34 away from the laser support 331. During laser marking, the robot can press the die-cast part against the vertical part of the pressure frame 34 away from the laser support 331. The laser emitted by the laser head 332 passes through the laser through hole to mark the die-cast part. This improves the positional stability of laser marking, thereby improving the quality of laser marking.

[0059] refer to Figure 6 The scanning mechanism includes a scanning bracket 35 fixed on the upper surface of the worktable 12 and a barcode scanner 36 fixed on the scanning bracket 35; the barcode scanner 36 scans and verifies the marking of the die-cast parts to ensure that the marking characters meet the relevant technical requirements.

[0060] refer to Figure 1 The quick-change gripper placement position includes a U-shaped gripper placement groove 120 formed on the worktable 12 near the robot end; a circular positioning pin 13 and a diamond-shaped positioning pin 14 are fixed on the worktable 12; the circular positioning pin 13 and the diamond-shaped positioning pin 14 are located around the gripper placement groove 120. The quick-change gripper 40 includes a quick-change connector 41, a quick-change connector connecting plate 42, a connecting neck 43, a gripper body plate 44, a tray loading / unloading gripper 45, a filter screen gripper 46, and a die-casting gripper 47. The quick-change connector 41, quick-change connector connecting plate 42, connecting neck 43, and gripper body plate 44 are sequentially fixedly connected by bolts. The tray loading / unloading gripper 45, the filter screen gripper 46, and the die-casting gripper 47 are respectively fixed to the three end faces of the gripper body plate 44 by bolts. The tray loading / unloading gripper 45 is used to grip one or more stacked trays 50. The filter screen gripper 46 is used to grip the filter screen 60 on the tray 50. The die-casting gripper 47 is used to grip the die-casting part with the filter screen 60. When the quick-change gripper 40 is placed, the quick-change connector 41 is at the top, and the connecting neck 43 is located in the gripper placement groove 120. The quick-change connector connecting plate 42 has a first limiting hole that mates with the circular positioning pin 13 and a second limiting hole that mates with the diamond-shaped positioning pin 14. The structure of the quick-change connector 41 adopts the existing structure and will not be described in detail here. To adapt to different working scenarios, the material table 10 has two gripper placement positions; different quick-change grippers 40 are placed in the two gripper placement positions respectively, and different quick-change grippers 40 are adapted to different filters and die-cast parts. In this way, the external robot can autonomously switch the corresponding quick-change gripper between the two quick-change gripper placement positions according to different operation requirements, without the need for manual gripper replacement, further improving the automation level and operational flexibility of the equipment. At the same time, the setting of two quick-change gripper placement positions also reserves space for the expansion of equipment functions, and more types of quick-change grippers can be added according to actual production needs to adapt to diverse production requirements.

[0061] Example 2: The difference between Example 2 and Example 1 is that when multiple stacked material trays 50 are set at the material replenishment position, if a lifting mechanism is not set at the unloading position, then the gripper lifting drive assembly 244 needs to have multiple strokes, which is not conducive to precise control. (Refer to...) Figure 8 A material unloading lifting frame 25 is provided at the unloading position. The material unloading lifting frame 25 includes a material unloading support plate 251 and four material unloading support rods 252. The four material unloading support rods 252 pass vertically through the worktable 12 via bushings. The material unloading support rods 252 correspond one-to-one with the material unloading feet 221, and the material unloading feet 221 are fixed to the upper end of the corresponding material unloading support rods 252. In order to reduce the number of driving components, a transmission assembly is provided between the material unloading lifting frame 25 and the feeding frame. The transmission assembly includes a driving rack 237, a driven rack 253, and an intermediate transmission gear 16. The driving rack 237 is fixed to the feeding support plate 251. 34 Near the unloading position, an intermediate transmission bracket 15 is fixed on the lower end surface of the workbench 12. An intermediate transmission gear 16 is rotatably connected to the bottom of the intermediate transmission bracket 15. A driven rack 253 is fixed to the unloading support plate 251 near the replenishment position. The driving rack 237 and the driven rack 253 are located on both sides of the intermediate transmission gear 16 and mesh with the intermediate transmission gear 16 respectively. In this way, when the feeding frame rises, the unloading lifting frame 25 descends synchronously by the same distance. Under normal conditions, the uppermost support position of the replenishment position and the uppermost support position of the unloading position are always at the same height.

[0062] To better control the timing of empty tray loading, a monitoring sensor 27 is installed on the workbench 12. The monitoring sensor 27 is a photoelectric sensor. When a set number of empty trays 50 are stacked, the bottommost tray 50 descends to its lowest position, blocking the light from the photoelectric sensor and triggering it. The photoelectric sensor then controls the robot to remove several stacked empty trays 50. In other embodiments, the empty trays 50 are stacked from bottom to top; in this case, the monitoring sensor 27 monitors the topmost tray 50.

[0063] Example 3: The difference between Example 3 and Example 2 is that when the robot misses picking up the filter screen 60, filter screen 60 will remain on the tray 50. This remaining filter screen 60 will be removed along with the tray 50, resulting in waste. (See reference...) Figure 9 and Figure 10A clamping assembly 249 is provided on the transfer main plate 245. The clamping assembly 249 includes a clamping seat and a clamping drive component 2491 for driving the clamping seat to rise and fall. The clamping seat is located on the lower side of the transfer main plate 245. The clamping seat includes a clamping plate 2492 and several storage sleeves 2493. The clamping drive component 2491 is a pair of cylinders fixed on the transfer main plate 245. Of course, other linear drive components, such as electric cylinders, can also be used. Several vertical inlets 24920 for the filter screen 60 to pass through are formed on the clamping plate 2492. Each vertical inlet 24920 corresponds to a filter screen 60. Each storage sleeve 2493 corresponds to a vertical inlet 24920 and covers the upper opening of the vertical inlet 24920. Several radially arranged spring plungers 2494 are provided on the side wall of the vertical inlet 24920. Figure 10 A push assembly 26 is provided at the unloading position; the push assembly 26 includes a push seat and a vertical push member 261 for driving the push seat to move vertically up and down; the push seat includes a push plate 262 and a number of push rods 263 fixed on the upper end face of the push plate 262; the push rods 263 correspond one-to-one with the vertical clearance holes 512; the vertical push member 261 is a cylinder, but other linear drive members, such as electric cylinders, can also be used.

[0064] During operation, the clamping assembly 249 moves to the feeding position, then the transfer main plate 245 descends. Next, a pair of translational claws 2472 approach each other and grasp the uppermost material tray 50. Then, the clamping drive 2491 drives the clamping plate 2492 to descend, thereby clamping the material tray 50 and making its movement more stable. If there is any filter screen 60 remaining on the material tray 50, it will enter the corresponding vertical inlet 24920 and storage sleeve 2493, then move to the unloading position, placing the material tray 50 in the corresponding position. Then, the vertical pusher 261 moves upwards... The pusher seat and push rod 263 pass through the vertical clearance hole 512 to push the filter screen 60 upward. In this process, the filter screen 60 overcomes and passes over the spring plunger 2494. Then the spring plunger 2494 returns to its original position. The vertical pusher 261 moves downward back to its original position, and the pusher seat also moves downward back to its original position. The filter screen 60 is retained in the storage sleeve 2493 due to the restriction of the spring plunger 2494. Then the clamping assembly 249, a pair of translation claws 2472 and the transfer body plate 245 return to their original positions in sequence. This process completes the recycling of the filter screen 60, which greatly reduces the waste of the filter screen 60.

[0065] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multifunctional filter screen loading platform for a die-casting workshop, characterized in that: include: The material platform (10) has a material replenishment position, a material discharge position and a quick-change gripper placement position. The material replenishment position is used to place at least one material tray (50) filled with filter screen (60). The material discharge position is used to place an empty material tray (50). The quick-change gripper placement position is used to place a quick-change gripper (40). A conveying device (20), disposed on the material platform (10), is used to convey an empty material tray (50) from the replenishment position to the unloading position; and, A marking device (30) is installed on the material platform (10) for marking die-cast parts; The external robot uses the quick-change gripper (40) to load the tray (50) filled with filter screens (60), take the filter screens (60) from the tray (50) and install them into the die-casting mold, take the die-casting parts from the die-casting mold, mark them and place them in the storage position, and unload the empty tray (50); The quick-change gripper (40) includes a tray loading / unloading gripper (45), a filter screen gripper (46), and a die-casting part gripper (47); the tray loading / unloading gripper (45) is used to grip the tray (50); the filter screen gripper (46) is used to grip the filter screen (60) on the tray (50); and the die-casting part gripper (47) is used to grip the die-casting part with the filter screen (60).

2. The multifunctional filter screen loading platform for a die-casting workshop according to claim 1, characterized in that: The conveying device (20) includes a transfer mechanism (24); the transfer mechanism (24) includes a transfer frame (243) that is laterally disposed on the material table (10), a transfer drive assembly (241) for driving the transfer frame (243), a transfer claw that is vertically and vertically disposed on the transfer frame (243), and a claw lifting drive assembly (244) for driving the transfer claw to vertically lift; the transfer claw is used to grab an empty material tray (50).

3. The multifunctional filter screen loading platform for a die-casting workshop according to claim 2, characterized in that: The transfer gripper includes a transfer body plate (245) and a pair of translation gripper components (247) respectively disposed at both ends of the transfer body plate (245); the translation gripper component (247) includes a translation gripper drive (2471) and a translation gripper (2472); the pair of translation grippers (2472) are driven by the pair of translation gripper drive components (2471) to move away from or close to each other; at least one limiting pin (246) is provided on the bottom surface of the transfer body plate (245); the axial direction of the limiting pin (246) is parallel to the moving direction of the transfer gripper; the tray (50) has a limiting insertion hole (511) for the limiting pin (246) to be inserted.

4. The multifunctional filter screen loading platform for a die-casting workshop according to claim 2, characterized in that: The material replenishment position is provided with several material trays (50) stacked on top of each other; the conveying device (20) also includes a feeding mechanism (23); the feeding mechanism (23) is used to drive the several material trays (50) to rise to the same height so that the uppermost material tray (50) is at a set height.

5. The multifunctional filter screen loading platform for a die-casting workshop according to claim 4, characterized in that: The feeding mechanism (23) includes a feeding rack that is vertically and vertically mounted on the material platform (10) and a feeding drive assembly (231) for driving the feeding rack to move vertically and vertically; the feeding rack has four feeding support rods (235); the plurality of material trays (50) are placed on the four feeding support rods (235).

6. The multifunctional filter screen loading platform for a die-casting workshop according to claim 5, characterized in that: The unloading position is provided with an unloading lifting frame (25); a transmission component is provided between the unloading lifting frame (25) and the feeding frame; the feeding frame and the unloading lifting frame (25) move in opposite directions and move at equal intervals, so that the position of the empty material tray on the feeding frame and the position of the empty material tray on the unloading lifting frame (25) are at the same height.

7. The multifunctional filter screen loading platform for a die-casting workshop according to claim 1, characterized in that: The material tray (50) has four material tray legs (52); the top of each material tray leg (52) has a stacking limiting hole (530), and the bottom has a stacking limiting pin (542) that cooperates with the stacking limiting hole (530); the material replenishment position is provided with four material replenishment legs (211); the material replenishment legs (211) correspond one-to-one with the material tray legs (52); the top of each material replenishment leg (211) has a material replenishment limiting hole (2110) that cooperates with the stacking limiting pin (542); the material unloading position is provided with four material unloading legs; the material unloading legs correspond one-to-one with the material tray legs (52); the top of each material unloading leg has a material unloading limiting hole that cooperates with the stacking limiting pin (542).

8. A multifunctional filter screen loading platform for a die-casting workshop according to claim 1, characterized in that: The marking device (30) includes a laser marking mechanism and a scanning mechanism; the laser marking mechanism is used to mark production information on the die-cast parts; the scanning mechanism is used to scan the production information and upload the production information to an external system.

9. A multifunctional filter screen loading platform for a die-casting workshop according to claim 8, characterized in that: The laser marking mechanism includes a marking machine (33), a marking vertical adjustment component (31), and a marking lifting seat (32); the marking vertical adjustment component (31) is used to adjust the vertical position of the marking lifting seat (32); the marking machine (33) is connected to the marking lifting seat (32); the marking lifting seat (32) includes a first support seat connected to the marking vertical adjustment component (31), a second support seat connected to the marking machine (33), and an elastic element disposed between the first support seat and the second support seat; the second support seat is horizontally slidably disposed on the first support seat; the elastic element applies pressure to the second support seat toward the robot direction.

10. A multifunctional filter screen loading platform for a die-casting workshop according to claim 9, characterized in that: The marking machine (33) is provided with a pressing frame (34); the robot presses the die-casting part against the pressing frame (34) to overcome the pressure of the elastic element and drive the marking machine (33) and the second support to move horizontally along the first support; the pressing frame (34) is provided with a laser through hole.

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